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nfs4xdr.c
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linux-6.19.14/fs/nfs/nfs4xdr.c
1/* 2 * fs/nfs/nfs4xdr.c 3 * 4 * Client-side XDR for NFSv4. 5 * 6 * Copyright (c) 2002 The Regents of the University of Michigan. 7 * All rights reserved. 8 * 9 * Kendrick Smith <kmsmith@umich.edu> 10 * Andy Adamson <andros@umich.edu> 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38#include <linux/param.h> 39#include <linux/time.h> 40#include <linux/mm.h> 41#include <linux/errno.h> 42#include <linux/string.h> 43#include <linux/in.h> 44#include <linux/pagemap.h> 45#include <linux/proc_fs.h> 46#include <linux/kdev_t.h> 47#include <linux/module.h> 48#include <linux/utsname.h> 49#include <linux/sunrpc/clnt.h> 50#include <linux/sunrpc/msg_prot.h> 51#include <linux/sunrpc/gss_api.h> 52#include <linux/nfs.h> 53#include <linux/nfs4.h> 54#include <linux/nfs_fs.h> 55#include <linux/nfs_common.h> 56 57#include "nfs4_fs.h" 58#include "nfs4trace.h" 59#include "internal.h" 60#include "nfs4idmap.h" 61#include "nfs4session.h" 62#include "pnfs.h" 63#include "netns.h" 64 65#define NFSDBG_FACILITY NFSDBG_XDR 66 67struct compound_hdr; 68static void encode_layoutget(struct xdr_stream *xdr, 69 const struct nfs4_layoutget_args *args, 70 struct compound_hdr *hdr); 71static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 72 struct nfs4_layoutget_res *res); 73 74/* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 75#ifdef DEBUG 76#define NFS4_MAXTAGLEN 20 77#else 78#define NFS4_MAXTAGLEN 0 79#endif 80 81/* lock,open owner id: 82 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 83 */ 84#define pagepad_maxsz (1) 85#define open_owner_id_maxsz (2 + 1 + 2 + 2) 86#define lock_owner_id_maxsz (2 + 1 + 2) 87#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 88#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 89#define op_encode_hdr_maxsz (1) 90#define op_decode_hdr_maxsz (2) 91#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 92#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 93#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 94#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 95#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 96 (NFS4_FHSIZE >> 2)) 97#define decode_putfh_maxsz (op_decode_hdr_maxsz) 98#define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 99#define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 100#define encode_getfh_maxsz (op_encode_hdr_maxsz) 101#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 102 ((3+NFS4_FHSIZE) >> 2)) 103#define nfs4_fattr_bitmap_maxsz 4 104#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 105#define nfstime4_maxsz (3) 106#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 107#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 108#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 109#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 110#ifdef CONFIG_NFS_V4_SECURITY_LABEL 111/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */ 112#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN)) 113#else 114#define nfs4_label_maxsz 0 115#endif 116/* We support only one layout type per file system */ 117#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8) 118/* This is based on getfattr, which uses the most attributes: */ 119#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 120 3*nfstime4_maxsz + \ 121 nfs4_owner_maxsz + \ 122 nfs4_group_maxsz + nfs4_label_maxsz + \ 123 decode_mdsthreshold_maxsz)) 124#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 125 nfs4_fattr_value_maxsz) 126#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 127#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 128 1 + 2 + 1 + \ 129 nfs4_owner_maxsz + \ 130 nfs4_group_maxsz + \ 131 nfs4_label_maxsz + \ 132 1 + nfstime4_maxsz + \ 133 1 + nfstime4_maxsz) 134#define encode_savefh_maxsz (op_encode_hdr_maxsz) 135#define decode_savefh_maxsz (op_decode_hdr_maxsz) 136#define encode_restorefh_maxsz (op_encode_hdr_maxsz) 137#define decode_restorefh_maxsz (op_decode_hdr_maxsz) 138#define encode_fsinfo_maxsz (encode_getattr_maxsz) 139/* The 5 accounts for the PNFS attributes, and assumes that at most three 140 * layout types will be returned. 141 */ 142#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 143 nfs4_fattr_bitmap_maxsz + 1 + \ 144 1 /* lease time */ + \ 145 2 /* max filesize */ + \ 146 2 /* max read */ + \ 147 2 /* max write */ + \ 148 nfstime4_maxsz /* time delta */ + \ 149 5 /* fs layout types */ + \ 150 1 /* layout blksize */ + \ 151 1 /* clone blksize */ + \ 152 1 /* change attr type */ + \ 153 1 /* xattr support */) 154#define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 155#define decode_renew_maxsz (op_decode_hdr_maxsz) 156#define encode_setclientid_maxsz \ 157 (op_encode_hdr_maxsz + \ 158 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 159 /* client name */ \ 160 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 161 1 /* sc_prog */ + \ 162 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 163 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 164 1) /* sc_cb_ident */ 165#define decode_setclientid_maxsz \ 166 (op_decode_hdr_maxsz + \ 167 2 /* clientid */ + \ 168 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 169 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 170 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN)) 171#define encode_setclientid_confirm_maxsz \ 172 (op_encode_hdr_maxsz + \ 173 3 + (NFS4_VERIFIER_SIZE >> 2)) 174#define decode_setclientid_confirm_maxsz \ 175 (op_decode_hdr_maxsz) 176#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 177#define decode_lookup_maxsz (op_decode_hdr_maxsz) 178#define encode_lookupp_maxsz (op_encode_hdr_maxsz) 179#define decode_lookupp_maxsz (op_decode_hdr_maxsz) 180#define encode_share_access_maxsz \ 181 (2) 182#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 183#define encode_opentype_maxsz (1 + encode_createmode_maxsz) 184#define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 185#define encode_open_maxsz (op_encode_hdr_maxsz + \ 186 2 + encode_share_access_maxsz + 2 + \ 187 1 + open_owner_id_maxsz + \ 188 encode_opentype_maxsz + \ 189 encode_claim_null_maxsz) 190#define decode_space_limit_maxsz (3) 191#define decode_ace_maxsz (3 + nfs4_owner_maxsz) 192#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 193 decode_space_limit_maxsz + \ 194 decode_ace_maxsz) 195#define decode_change_info_maxsz (5) 196#define decode_open_maxsz (op_decode_hdr_maxsz + \ 197 decode_stateid_maxsz + \ 198 decode_change_info_maxsz + 1 + \ 199 nfs4_fattr_bitmap_maxsz + \ 200 decode_delegation_maxsz) 201#define encode_open_confirm_maxsz \ 202 (op_encode_hdr_maxsz + \ 203 encode_stateid_maxsz + 1) 204#define decode_open_confirm_maxsz \ 205 (op_decode_hdr_maxsz + \ 206 decode_stateid_maxsz) 207#define encode_open_downgrade_maxsz \ 208 (op_encode_hdr_maxsz + \ 209 encode_stateid_maxsz + 1 + \ 210 encode_share_access_maxsz) 211#define decode_open_downgrade_maxsz \ 212 (op_decode_hdr_maxsz + \ 213 decode_stateid_maxsz) 214#define encode_close_maxsz (op_encode_hdr_maxsz + \ 215 1 + encode_stateid_maxsz) 216#define decode_close_maxsz (op_decode_hdr_maxsz + \ 217 decode_stateid_maxsz) 218#define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 219 encode_stateid_maxsz + \ 220 encode_attrs_maxsz) 221#define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 222 nfs4_fattr_bitmap_maxsz) 223#define encode_delegattr_maxsz (op_encode_hdr_maxsz + \ 224 encode_stateid_maxsz + \ 225 nfs4_fattr_bitmap_maxsz + \ 226 2*nfstime4_maxsz) 227#define decode_delegattr_maxsz (decode_setattr_maxsz) 228#define encode_read_maxsz (op_encode_hdr_maxsz + \ 229 encode_stateid_maxsz + 3) 230#define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz) 231#define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 232 2 + encode_verifier_maxsz + 5 + \ 233 nfs4_label_maxsz) 234#define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 235 decode_verifier_maxsz + pagepad_maxsz) 236#define encode_readlink_maxsz (op_encode_hdr_maxsz) 237#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz) 238#define encode_write_maxsz (op_encode_hdr_maxsz + \ 239 encode_stateid_maxsz + 4) 240#define decode_write_maxsz (op_decode_hdr_maxsz + \ 241 2 + decode_verifier_maxsz) 242#define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 243#define decode_commit_maxsz (op_decode_hdr_maxsz + \ 244 decode_verifier_maxsz) 245#define encode_remove_maxsz (op_encode_hdr_maxsz + \ 246 nfs4_name_maxsz) 247#define decode_remove_maxsz (op_decode_hdr_maxsz + \ 248 decode_change_info_maxsz) 249#define encode_rename_maxsz (op_encode_hdr_maxsz + \ 250 2 * nfs4_name_maxsz) 251#define decode_rename_maxsz (op_decode_hdr_maxsz + \ 252 decode_change_info_maxsz + \ 253 decode_change_info_maxsz) 254#define encode_link_maxsz (op_encode_hdr_maxsz + \ 255 nfs4_name_maxsz) 256#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 257#define encode_lockowner_maxsz (2 + 1 + lock_owner_id_maxsz) 258 259#define encode_lock_maxsz (op_encode_hdr_maxsz + \ 260 7 + \ 261 1 + encode_stateid_maxsz + 1 + \ 262 encode_lockowner_maxsz) 263#define decode_lock_denied_maxsz \ 264 (2 + 2 + 1 + 2 + 1 + lock_owner_id_maxsz) 265#define decode_lock_maxsz (op_decode_hdr_maxsz + \ 266 decode_lock_denied_maxsz) 267#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 268 encode_lockowner_maxsz) 269#define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 270 decode_lock_denied_maxsz) 271#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 272 encode_stateid_maxsz + \ 273 4) 274#define decode_locku_maxsz (op_decode_hdr_maxsz + \ 275 decode_stateid_maxsz) 276#define encode_release_lockowner_maxsz \ 277 (op_encode_hdr_maxsz + \ 278 encode_lockowner_maxsz) 279#define decode_release_lockowner_maxsz \ 280 (op_decode_hdr_maxsz) 281#define encode_access_maxsz (op_encode_hdr_maxsz + 1) 282#define decode_access_maxsz (op_decode_hdr_maxsz + 2) 283#define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 284 1 + nfs4_name_maxsz + \ 285 1 + \ 286 nfs4_fattr_maxsz) 287#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 288#define encode_create_maxsz (op_encode_hdr_maxsz + \ 289 1 + 2 + nfs4_name_maxsz + \ 290 encode_attrs_maxsz) 291#define decode_create_maxsz (op_decode_hdr_maxsz + \ 292 decode_change_info_maxsz + \ 293 nfs4_fattr_bitmap_maxsz) 294#define encode_statfs_maxsz (encode_getattr_maxsz) 295#define decode_statfs_maxsz (decode_getattr_maxsz) 296#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 297#define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 298#define encode_getacl_maxsz (encode_getattr_maxsz) 299#define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 300 nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz) 301#define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 302 encode_stateid_maxsz + 3) 303#define decode_setacl_maxsz (decode_setattr_maxsz) 304#define encode_fs_locations_maxsz \ 305 (encode_getattr_maxsz) 306#define decode_fs_locations_maxsz \ 307 (pagepad_maxsz) 308#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 309#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 310 311#if defined(CONFIG_NFS_V4_1) 312#define NFS4_MAX_MACHINE_NAME_LEN (64) 313#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \ 314 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8) 315 316#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 317 encode_verifier_maxsz + \ 318 1 /* co_ownerid.len */ + \ 319 /* eia_clientowner */ \ 320 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 321 1 /* flags */ + \ 322 1 /* spa_how */ + \ 323 /* max is SP4_MACH_CRED (for now) */ + \ 324 1 + NFS4_OP_MAP_NUM_WORDS + \ 325 1 + NFS4_OP_MAP_NUM_WORDS + \ 326 1 /* implementation id array of size 1 */ + \ 327 1 /* nii_domain */ + \ 328 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 329 1 /* nii_name */ + \ 330 XDR_QUADLEN(IMPL_NAME_LIMIT) + \ 331 3 /* nii_date */) 332#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 333 2 /* eir_clientid */ + \ 334 1 /* eir_sequenceid */ + \ 335 1 /* eir_flags */ + \ 336 1 /* spr_how */ + \ 337 /* max is SP4_MACH_CRED (for now) */ + \ 338 1 + NFS4_OP_MAP_NUM_WORDS + \ 339 1 + NFS4_OP_MAP_NUM_WORDS + \ 340 2 /* eir_server_owner.so_minor_id */ + \ 341 /* eir_server_owner.so_major_id<> */ \ 342 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 343 /* eir_server_scope<> */ \ 344 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 345 1 /* eir_server_impl_id array length */ + \ 346 1 /* nii_domain */ + \ 347 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 348 1 /* nii_name */ + \ 349 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 350 3 /* nii_date */) 351#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 352#define decode_channel_attrs_maxsz (6 + \ 353 1 /* ca_rdma_ird.len */ + \ 354 1 /* ca_rdma_ird */) 355#define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 356 2 /* csa_clientid */ + \ 357 1 /* csa_sequence */ + \ 358 1 /* csa_flags */ + \ 359 encode_channel_attrs_maxsz + \ 360 encode_channel_attrs_maxsz + \ 361 1 /* csa_cb_program */ + \ 362 1 /* csa_sec_parms.len (1) */ + \ 363 1 /* cb_secflavor (AUTH_SYS) */ + \ 364 1 /* stamp */ + \ 365 1 /* machinename.len */ + \ 366 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 367 1 /* uid */ + \ 368 1 /* gid */ + \ 369 1 /* gids.len (0) */) 370#define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 371 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 372 1 /* csr_sequence */ + \ 373 1 /* csr_flags */ + \ 374 decode_channel_attrs_maxsz + \ 375 decode_channel_attrs_maxsz) 376#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \ 377 /* bctsa_sessid */ \ 378 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 379 1 /* bctsa_dir */ + \ 380 1 /* bctsa_use_conn_in_rdma_mode */) 381#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \ 382 /* bctsr_sessid */ \ 383 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 384 1 /* bctsr_dir */ + \ 385 1 /* bctsr_use_conn_in_rdma_mode */) 386#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 387#define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 388#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2) 389#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz) 390#define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 392#define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 393 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 394#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 395#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 396#define encode_get_dir_deleg_maxsz (op_encode_hdr_maxsz + \ 397 4 /* gdda_signal_deleg_avail */ + \ 398 8 /* gdda_notification_types */ + \ 399 nfstime4_maxsz /* gdda_child_attr_delay */ + \ 400 nfstime4_maxsz /* gdda_dir_attr_delay */ + \ 401 nfs4_fattr_bitmap_maxsz /* gdda_child_attributes */ + \ 402 nfs4_fattr_bitmap_maxsz /* gdda_dir_attributes */) 403#define decode_get_dir_deleg_maxsz (op_decode_hdr_maxsz + \ 404 4 /* gddrnf_status */ + \ 405 encode_verifier_maxsz /* gddr_cookieverf */ + \ 406 encode_stateid_maxsz /* gddr_stateid */ + \ 407 8 /* gddr_notification */ + \ 408 nfs4_fattr_maxsz /* gddr_child_attributes */ + \ 409 nfs4_fattr_maxsz /* gddr_dir_attributes */) 410#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \ 411 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \ 412 1 /* layout type */ + \ 413 1 /* maxcount */ + \ 414 1 /* bitmap size */ + \ 415 1 /* notification bitmap length */ + \ 416 1 /* notification bitmap, word 0 */) 417#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 418 1 /* layout type */ + \ 419 1 /* opaque devaddr4 length */ + \ 420 /* devaddr4 payload is read into page */ \ 421 1 /* notification bitmap length */ + \ 422 1 /* notification bitmap, word 0 */ + \ 423 pagepad_maxsz /* possible XDR padding */) 424#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 425 encode_stateid_maxsz) 426#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 427 decode_stateid_maxsz + \ 428 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \ 429 pagepad_maxsz) 430#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 431 2 /* offset */ + \ 432 2 /* length */ + \ 433 1 /* reclaim */ + \ 434 encode_stateid_maxsz + \ 435 1 /* new offset (true) */ + \ 436 2 /* last byte written */ + \ 437 1 /* nt_timechanged (false) */ + \ 438 1 /* layoutupdate4 layout type */ + \ 439 1 /* layoutupdate4 opaqueue len */) 440 /* the actual content of layoutupdate4 should 441 be allocated by drivers and spliced in 442 using xdr_write_pages */ 443#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 444#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 445 encode_stateid_maxsz + \ 446 1 + \ 447 XDR_QUADLEN(NFS4_OPAQUE_LIMIT)) 448#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 449 1 + decode_stateid_maxsz) 450#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 451#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 452#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 453 XDR_QUADLEN(NFS4_STATEID_SIZE)) 454#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 455#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 456 XDR_QUADLEN(NFS4_STATEID_SIZE)) 457#define decode_free_stateid_maxsz (op_decode_hdr_maxsz) 458#else /* CONFIG_NFS_V4_1 */ 459#define encode_sequence_maxsz 0 460#define decode_sequence_maxsz 0 461#define encode_get_dir_deleg_maxsz 0 462#define decode_get_dir_deleg_maxsz 0 463#define encode_layoutreturn_maxsz 0 464#define decode_layoutreturn_maxsz 0 465#define encode_layoutget_maxsz 0 466#define decode_layoutget_maxsz 0 467#endif /* CONFIG_NFS_V4_1 */ 468 469#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 470#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 471#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 472 encode_sequence_maxsz + \ 473 encode_putfh_maxsz + \ 474 encode_read_maxsz) 475#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 476 decode_sequence_maxsz + \ 477 decode_putfh_maxsz + \ 478 decode_read_maxsz) 479#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 480 encode_sequence_maxsz + \ 481 encode_putfh_maxsz + \ 482 encode_readlink_maxsz) 483#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 484 decode_sequence_maxsz + \ 485 decode_putfh_maxsz + \ 486 decode_readlink_maxsz) 487#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 488 encode_sequence_maxsz + \ 489 encode_putfh_maxsz + \ 490 encode_readdir_maxsz) 491#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 492 decode_sequence_maxsz + \ 493 decode_putfh_maxsz + \ 494 decode_readdir_maxsz) 495#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 496 encode_sequence_maxsz + \ 497 encode_putfh_maxsz + \ 498 encode_write_maxsz + \ 499 encode_getattr_maxsz) 500#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 501 decode_sequence_maxsz + \ 502 decode_putfh_maxsz + \ 503 decode_write_maxsz + \ 504 decode_getattr_maxsz) 505#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 506 encode_sequence_maxsz + \ 507 encode_putfh_maxsz + \ 508 encode_commit_maxsz) 509#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 510 decode_sequence_maxsz + \ 511 decode_putfh_maxsz + \ 512 decode_commit_maxsz) 513#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 514 encode_sequence_maxsz + \ 515 encode_putfh_maxsz + \ 516 encode_open_maxsz + \ 517 encode_access_maxsz + \ 518 encode_getfh_maxsz + \ 519 encode_getattr_maxsz + \ 520 encode_layoutget_maxsz) 521#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 522 decode_sequence_maxsz + \ 523 decode_putfh_maxsz + \ 524 decode_open_maxsz + \ 525 decode_access_maxsz + \ 526 decode_getfh_maxsz + \ 527 decode_getattr_maxsz + \ 528 decode_layoutget_maxsz) 529#define NFS4_enc_open_confirm_sz \ 530 (compound_encode_hdr_maxsz + \ 531 encode_putfh_maxsz + \ 532 encode_open_confirm_maxsz) 533#define NFS4_dec_open_confirm_sz \ 534 (compound_decode_hdr_maxsz + \ 535 decode_putfh_maxsz + \ 536 decode_open_confirm_maxsz) 537#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 538 encode_sequence_maxsz + \ 539 encode_putfh_maxsz + \ 540 encode_open_maxsz + \ 541 encode_access_maxsz + \ 542 encode_getattr_maxsz + \ 543 encode_layoutget_maxsz) 544#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 545 decode_sequence_maxsz + \ 546 decode_putfh_maxsz + \ 547 decode_open_maxsz + \ 548 decode_access_maxsz + \ 549 decode_getattr_maxsz + \ 550 decode_layoutget_maxsz) 551#define NFS4_enc_open_downgrade_sz \ 552 (compound_encode_hdr_maxsz + \ 553 encode_sequence_maxsz + \ 554 encode_putfh_maxsz + \ 555 encode_layoutreturn_maxsz + \ 556 encode_open_downgrade_maxsz) 557#define NFS4_dec_open_downgrade_sz \ 558 (compound_decode_hdr_maxsz + \ 559 decode_sequence_maxsz + \ 560 decode_putfh_maxsz + \ 561 decode_layoutreturn_maxsz + \ 562 decode_open_downgrade_maxsz) 563#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 564 encode_sequence_maxsz + \ 565 encode_putfh_maxsz + \ 566 encode_layoutreturn_maxsz + \ 567 encode_close_maxsz + \ 568 encode_getattr_maxsz) 569#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 570 decode_sequence_maxsz + \ 571 decode_putfh_maxsz + \ 572 decode_layoutreturn_maxsz + \ 573 decode_close_maxsz + \ 574 decode_getattr_maxsz) 575#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 576 encode_sequence_maxsz + \ 577 encode_putfh_maxsz + \ 578 encode_setattr_maxsz + \ 579 encode_getattr_maxsz) 580#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 581 decode_sequence_maxsz + \ 582 decode_putfh_maxsz + \ 583 decode_setattr_maxsz + \ 584 decode_getattr_maxsz) 585#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 586 encode_sequence_maxsz + \ 587 encode_putfh_maxsz + \ 588 encode_fsinfo_maxsz) 589#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 590 decode_sequence_maxsz + \ 591 decode_putfh_maxsz + \ 592 decode_fsinfo_maxsz) 593#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 594 encode_renew_maxsz) 595#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 596 decode_renew_maxsz) 597#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 598 encode_setclientid_maxsz) 599#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 600 decode_setclientid_maxsz) 601#define NFS4_enc_setclientid_confirm_sz \ 602 (compound_encode_hdr_maxsz + \ 603 encode_setclientid_confirm_maxsz) 604#define NFS4_dec_setclientid_confirm_sz \ 605 (compound_decode_hdr_maxsz + \ 606 decode_setclientid_confirm_maxsz) 607#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 608 encode_sequence_maxsz + \ 609 encode_putfh_maxsz + \ 610 encode_lock_maxsz) 611#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 612 decode_sequence_maxsz + \ 613 decode_putfh_maxsz + \ 614 decode_lock_maxsz) 615#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 616 encode_sequence_maxsz + \ 617 encode_putfh_maxsz + \ 618 encode_lockt_maxsz) 619#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 620 decode_sequence_maxsz + \ 621 decode_putfh_maxsz + \ 622 decode_lockt_maxsz) 623#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 624 encode_sequence_maxsz + \ 625 encode_putfh_maxsz + \ 626 encode_locku_maxsz) 627#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 628 decode_sequence_maxsz + \ 629 decode_putfh_maxsz + \ 630 decode_locku_maxsz) 631#define NFS4_enc_release_lockowner_sz \ 632 (compound_encode_hdr_maxsz + \ 633 encode_lockowner_maxsz) 634#define NFS4_dec_release_lockowner_sz \ 635 (compound_decode_hdr_maxsz + \ 636 decode_release_lockowner_maxsz) 637#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 638 encode_sequence_maxsz + \ 639 encode_putfh_maxsz + \ 640 encode_access_maxsz + \ 641 encode_getattr_maxsz) 642#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 643 decode_sequence_maxsz + \ 644 decode_putfh_maxsz + \ 645 decode_access_maxsz + \ 646 decode_getattr_maxsz) 647#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 648 encode_sequence_maxsz + \ 649 encode_putfh_maxsz + \ 650 encode_get_dir_deleg_maxsz + \ 651 encode_getattr_maxsz + \ 652 encode_renew_maxsz) 653#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 654 decode_sequence_maxsz + \ 655 decode_putfh_maxsz + \ 656 decode_get_dir_deleg_maxsz + \ 657 decode_getattr_maxsz + \ 658 decode_renew_maxsz) 659#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 660 encode_sequence_maxsz + \ 661 encode_putfh_maxsz + \ 662 encode_lookup_maxsz + \ 663 encode_getattr_maxsz + \ 664 encode_getfh_maxsz) 665#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 666 decode_sequence_maxsz + \ 667 decode_putfh_maxsz + \ 668 decode_lookup_maxsz + \ 669 decode_getattr_maxsz + \ 670 decode_getfh_maxsz) 671#define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \ 672 encode_sequence_maxsz + \ 673 encode_putfh_maxsz + \ 674 encode_lookupp_maxsz + \ 675 encode_getattr_maxsz + \ 676 encode_getfh_maxsz) 677#define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \ 678 decode_sequence_maxsz + \ 679 decode_putfh_maxsz + \ 680 decode_lookupp_maxsz + \ 681 decode_getattr_maxsz + \ 682 decode_getfh_maxsz) 683#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 684 encode_sequence_maxsz + \ 685 encode_putrootfh_maxsz + \ 686 encode_getattr_maxsz + \ 687 encode_getfh_maxsz) 688#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 689 decode_sequence_maxsz + \ 690 decode_putrootfh_maxsz + \ 691 decode_getattr_maxsz + \ 692 decode_getfh_maxsz) 693#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 694 encode_sequence_maxsz + \ 695 encode_putfh_maxsz + \ 696 encode_remove_maxsz) 697#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 698 decode_sequence_maxsz + \ 699 decode_putfh_maxsz + \ 700 decode_remove_maxsz) 701#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 702 encode_sequence_maxsz + \ 703 encode_putfh_maxsz + \ 704 encode_savefh_maxsz + \ 705 encode_putfh_maxsz + \ 706 encode_rename_maxsz) 707#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 708 decode_sequence_maxsz + \ 709 decode_putfh_maxsz + \ 710 decode_savefh_maxsz + \ 711 decode_putfh_maxsz + \ 712 decode_rename_maxsz) 713#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 714 encode_sequence_maxsz + \ 715 encode_putfh_maxsz + \ 716 encode_savefh_maxsz + \ 717 encode_putfh_maxsz + \ 718 encode_link_maxsz + \ 719 encode_restorefh_maxsz + \ 720 encode_getattr_maxsz) 721#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 722 decode_sequence_maxsz + \ 723 decode_putfh_maxsz + \ 724 decode_savefh_maxsz + \ 725 decode_putfh_maxsz + \ 726 decode_link_maxsz + \ 727 decode_restorefh_maxsz + \ 728 decode_getattr_maxsz) 729#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 730 encode_sequence_maxsz + \ 731 encode_putfh_maxsz + \ 732 encode_symlink_maxsz + \ 733 encode_getattr_maxsz + \ 734 encode_getfh_maxsz) 735#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 736 decode_sequence_maxsz + \ 737 decode_putfh_maxsz + \ 738 decode_symlink_maxsz + \ 739 decode_getattr_maxsz + \ 740 decode_getfh_maxsz) 741#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 742 encode_sequence_maxsz + \ 743 encode_putfh_maxsz + \ 744 encode_create_maxsz + \ 745 encode_getfh_maxsz + \ 746 encode_getattr_maxsz) 747#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 748 decode_sequence_maxsz + \ 749 decode_putfh_maxsz + \ 750 decode_create_maxsz + \ 751 decode_getfh_maxsz + \ 752 decode_getattr_maxsz) 753#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 754 encode_sequence_maxsz + \ 755 encode_putfh_maxsz + \ 756 encode_getattr_maxsz) 757#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 758 decode_sequence_maxsz + \ 759 decode_putfh_maxsz + \ 760 decode_getattr_maxsz) 761#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 762 encode_sequence_maxsz + \ 763 encode_putfh_maxsz + \ 764 encode_statfs_maxsz) 765#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 766 decode_sequence_maxsz + \ 767 decode_putfh_maxsz + \ 768 decode_statfs_maxsz) 769#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 770 encode_sequence_maxsz + \ 771 encode_putfh_maxsz + \ 772 encode_getattr_maxsz) 773#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 774 decode_sequence_maxsz + \ 775 decode_putfh_maxsz + \ 776 decode_getattr_maxsz) 777#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 778 encode_sequence_maxsz + \ 779 encode_putfh_maxsz + \ 780 encode_layoutreturn_maxsz + \ 781 encode_delegattr_maxsz + \ 782 encode_delegreturn_maxsz + \ 783 encode_getattr_maxsz) 784#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 785 decode_sequence_maxsz + \ 786 decode_putfh_maxsz + \ 787 decode_layoutreturn_maxsz + \ 788 decode_delegattr_maxsz + \ 789 decode_delegreturn_maxsz + \ 790 decode_getattr_maxsz) 791#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 792 encode_sequence_maxsz + \ 793 encode_putfh_maxsz + \ 794 encode_getacl_maxsz) 795#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 796 decode_sequence_maxsz + \ 797 decode_putfh_maxsz + \ 798 decode_getacl_maxsz) 799#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 800 encode_sequence_maxsz + \ 801 encode_putfh_maxsz + \ 802 encode_setacl_maxsz) 803#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 804 decode_sequence_maxsz + \ 805 decode_putfh_maxsz + \ 806 decode_setacl_maxsz) 807#define NFS4_enc_fs_locations_sz \ 808 (compound_encode_hdr_maxsz + \ 809 encode_sequence_maxsz + \ 810 encode_putfh_maxsz + \ 811 encode_lookup_maxsz + \ 812 encode_fs_locations_maxsz + \ 813 encode_renew_maxsz) 814#define NFS4_dec_fs_locations_sz \ 815 (compound_decode_hdr_maxsz + \ 816 decode_sequence_maxsz + \ 817 decode_putfh_maxsz + \ 818 decode_lookup_maxsz + \ 819 decode_fs_locations_maxsz + \ 820 decode_renew_maxsz) 821#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 822 encode_sequence_maxsz + \ 823 encode_putfh_maxsz + \ 824 encode_secinfo_maxsz) 825#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 826 decode_sequence_maxsz + \ 827 decode_putfh_maxsz + \ 828 decode_secinfo_maxsz) 829#define NFS4_enc_fsid_present_sz \ 830 (compound_encode_hdr_maxsz + \ 831 encode_sequence_maxsz + \ 832 encode_putfh_maxsz + \ 833 encode_getfh_maxsz + \ 834 encode_renew_maxsz) 835#define NFS4_dec_fsid_present_sz \ 836 (compound_decode_hdr_maxsz + \ 837 decode_sequence_maxsz + \ 838 decode_putfh_maxsz + \ 839 decode_getfh_maxsz + \ 840 decode_renew_maxsz) 841#if defined(CONFIG_NFS_V4_1) 842#define NFS4_enc_bind_conn_to_session_sz \ 843 (compound_encode_hdr_maxsz + \ 844 encode_bind_conn_to_session_maxsz) 845#define NFS4_dec_bind_conn_to_session_sz \ 846 (compound_decode_hdr_maxsz + \ 847 decode_bind_conn_to_session_maxsz) 848#define NFS4_enc_exchange_id_sz \ 849 (compound_encode_hdr_maxsz + \ 850 encode_exchange_id_maxsz) 851#define NFS4_dec_exchange_id_sz \ 852 (compound_decode_hdr_maxsz + \ 853 decode_exchange_id_maxsz) 854#define NFS4_enc_create_session_sz \ 855 (compound_encode_hdr_maxsz + \ 856 encode_create_session_maxsz) 857#define NFS4_dec_create_session_sz \ 858 (compound_decode_hdr_maxsz + \ 859 decode_create_session_maxsz) 860#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 861 encode_destroy_session_maxsz) 862#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 863 decode_destroy_session_maxsz) 864#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \ 865 encode_destroy_clientid_maxsz) 866#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \ 867 decode_destroy_clientid_maxsz) 868#define NFS4_enc_sequence_sz \ 869 (compound_decode_hdr_maxsz + \ 870 encode_sequence_maxsz) 871#define NFS4_dec_sequence_sz \ 872 (compound_decode_hdr_maxsz + \ 873 decode_sequence_maxsz) 874#endif 875#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 876 encode_sequence_maxsz + \ 877 encode_putrootfh_maxsz + \ 878 encode_fsinfo_maxsz) 879#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 880 decode_sequence_maxsz + \ 881 decode_putrootfh_maxsz + \ 882 decode_fsinfo_maxsz) 883#if defined(CONFIG_NFS_V4_1) 884#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 885 encode_sequence_maxsz + \ 886 encode_reclaim_complete_maxsz) 887#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 888 decode_sequence_maxsz + \ 889 decode_reclaim_complete_maxsz) 890#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 891 encode_sequence_maxsz +\ 892 encode_getdeviceinfo_maxsz) 893#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 894 decode_sequence_maxsz + \ 895 decode_getdeviceinfo_maxsz) 896#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 897 encode_sequence_maxsz + \ 898 encode_putfh_maxsz + \ 899 encode_layoutget_maxsz) 900#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 901 decode_sequence_maxsz + \ 902 decode_putfh_maxsz + \ 903 decode_layoutget_maxsz) 904#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 905 encode_sequence_maxsz +\ 906 encode_putfh_maxsz + \ 907 encode_layoutcommit_maxsz + \ 908 encode_getattr_maxsz) 909#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 910 decode_sequence_maxsz + \ 911 decode_putfh_maxsz + \ 912 decode_layoutcommit_maxsz + \ 913 decode_getattr_maxsz) 914#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 915 encode_sequence_maxsz + \ 916 encode_putfh_maxsz + \ 917 encode_layoutreturn_maxsz) 918#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 919 decode_sequence_maxsz + \ 920 decode_putfh_maxsz + \ 921 decode_layoutreturn_maxsz) 922#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 923 encode_sequence_maxsz + \ 924 encode_putrootfh_maxsz +\ 925 encode_secinfo_no_name_maxsz) 926#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 927 decode_sequence_maxsz + \ 928 decode_putrootfh_maxsz + \ 929 decode_secinfo_no_name_maxsz) 930#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 931 encode_sequence_maxsz + \ 932 encode_test_stateid_maxsz) 933#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 934 decode_sequence_maxsz + \ 935 decode_test_stateid_maxsz) 936#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 937 encode_sequence_maxsz + \ 938 encode_free_stateid_maxsz) 939#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 940 decode_sequence_maxsz + \ 941 decode_free_stateid_maxsz) 942 943const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 944 compound_encode_hdr_maxsz + 945 encode_sequence_maxsz + 946 encode_putfh_maxsz + 947 encode_getattr_maxsz) * 948 XDR_UNIT); 949 950const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 951 compound_decode_hdr_maxsz + 952 decode_sequence_maxsz + 953 decode_putfh_maxsz) * 954 XDR_UNIT); 955 956const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH + 957 compound_decode_hdr_maxsz + 958 decode_sequence_maxsz) * 959 XDR_UNIT); 960EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead); 961#endif /* CONFIG_NFS_V4_1 */ 962 963static const umode_t nfs_type2fmt[] = { 964 [NF4BAD] = 0, 965 [NF4REG] = S_IFREG, 966 [NF4DIR] = S_IFDIR, 967 [NF4BLK] = S_IFBLK, 968 [NF4CHR] = S_IFCHR, 969 [NF4LNK] = S_IFLNK, 970 [NF4SOCK] = S_IFSOCK, 971 [NF4FIFO] = S_IFIFO, 972 [NF4ATTRDIR] = 0, 973 [NF4NAMEDATTR] = 0, 974}; 975 976struct compound_hdr { 977 int32_t status; 978 uint32_t nops; 979 __be32 * nops_p; 980 uint32_t taglen; 981 char * tag; 982 uint32_t replen; /* expected reply words */ 983 u32 minorversion; 984}; 985 986static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 987{ 988 __be32 *p = xdr_reserve_space(xdr, nbytes); 989 BUG_ON(!p); 990 return p; 991} 992 993static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 994{ 995 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0); 996} 997 998static void encode_uint32(struct xdr_stream *xdr, u32 n) 999{ 1000 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0); 1001} 1002 1003static void encode_uint64(struct xdr_stream *xdr, u64 n) 1004{ 1005 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0); 1006} 1007 1008static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr, 1009 const __u32 *bitmap, size_t len) 1010{ 1011 ssize_t ret; 1012 1013 /* Trim empty words */ 1014 while (len > 0 && bitmap[len-1] == 0) 1015 len--; 1016 ret = xdr_stream_encode_uint32_array(xdr, bitmap, len); 1017 if (WARN_ON_ONCE(ret < 0)) 1018 return ret; 1019 return len; 1020} 1021 1022static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask, 1023 __u32 *res, size_t len) 1024{ 1025 size_t i; 1026 __u32 tmp; 1027 1028 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0)) 1029 len--; 1030 for (i = len; i-- > 0;) { 1031 tmp = bitmap[i] & mask[i]; 1032 res[i] = tmp; 1033 } 1034 return len; 1035} 1036 1037static void encode_nfs4_seqid(struct xdr_stream *xdr, 1038 const struct nfs_seqid *seqid) 1039{ 1040 if (seqid != NULL) 1041 encode_uint32(xdr, seqid->sequence->counter); 1042 else 1043 encode_uint32(xdr, 0); 1044} 1045 1046static void encode_compound_hdr(struct xdr_stream *xdr, 1047 struct rpc_rqst *req, 1048 struct compound_hdr *hdr) 1049{ 1050 __be32 *p; 1051 1052 /* initialize running count of expected bytes in reply. 1053 * NOTE: the replied tag SHOULD be the same is the one sent, 1054 * but this is not required as a MUST for the server to do so. */ 1055 hdr->replen = 3 + hdr->taglen; 1056 1057 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN); 1058 encode_string(xdr, hdr->taglen, hdr->tag); 1059 p = reserve_space(xdr, 8); 1060 *p++ = cpu_to_be32(hdr->minorversion); 1061 hdr->nops_p = p; 1062 *p = cpu_to_be32(hdr->nops); 1063} 1064 1065static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, 1066 uint32_t replen, 1067 struct compound_hdr *hdr) 1068{ 1069 encode_uint32(xdr, op); 1070 hdr->nops++; 1071 hdr->replen += replen; 1072} 1073 1074static void encode_nops(struct compound_hdr *hdr) 1075{ 1076 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS); 1077 *hdr->nops_p = htonl(hdr->nops); 1078} 1079 1080static void encode_nfs4_stateid(struct xdr_stream *xdr, 1081 const nfs4_stateid *stateid) 1082{ 1083 encode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); 1084} 1085 1086static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 1087{ 1088 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); 1089} 1090 1091static __be32 * 1092xdr_encode_nfstime4(__be32 *p, const struct timespec64 *t) 1093{ 1094 p = xdr_encode_hyper(p, t->tv_sec); 1095 *p++ = cpu_to_be32(t->tv_nsec); 1096 return p; 1097} 1098 1099static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, 1100 const struct nfs4_label *label, 1101 const umode_t *umask, 1102 const struct nfs_server *server, 1103 const uint32_t attrmask[]) 1104{ 1105 char owner_name[IDMAP_NAMESZ]; 1106 char owner_group[IDMAP_NAMESZ]; 1107 int owner_namelen = 0; 1108 int owner_grouplen = 0; 1109 __be32 *p; 1110 uint32_t len = 0; 1111 uint32_t bmval[3] = { 0 }; 1112 1113 /* 1114 * We reserve enough space to write the entire attribute buffer at once. 1115 */ 1116 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) { 1117 bmval[0] |= FATTR4_WORD0_SIZE; 1118 len += 8; 1119 } 1120 if (iap->ia_valid & ATTR_MODE) { 1121 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) { 1122 bmval[2] |= FATTR4_WORD2_MODE_UMASK; 1123 len += 8; 1124 } else if (attrmask[1] & FATTR4_WORD1_MODE) { 1125 bmval[1] |= FATTR4_WORD1_MODE; 1126 len += 4; 1127 } 1128 } 1129 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) { 1130 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 1131 if (owner_namelen < 0) { 1132 dprintk("nfs: couldn't resolve uid %d to string\n", 1133 from_kuid(&init_user_ns, iap->ia_uid)); 1134 /* XXX */ 1135 strcpy(owner_name, "nobody"); 1136 owner_namelen = sizeof("nobody") - 1; 1137 /* goto out; */ 1138 } 1139 bmval[1] |= FATTR4_WORD1_OWNER; 1140 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 1141 } 1142 if ((iap->ia_valid & ATTR_GID) && 1143 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) { 1144 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 1145 if (owner_grouplen < 0) { 1146 dprintk("nfs: couldn't resolve gid %d to string\n", 1147 from_kgid(&init_user_ns, iap->ia_gid)); 1148 strcpy(owner_group, "nobody"); 1149 owner_grouplen = sizeof("nobody") - 1; 1150 /* goto out; */ 1151 } 1152 bmval[1] |= FATTR4_WORD1_OWNER_GROUP; 1153 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 1154 } 1155 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1156 if (iap->ia_valid & ATTR_ATIME_SET) { 1157 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1158 len += 4 + (nfstime4_maxsz << 2); 1159 } else if (iap->ia_valid & ATTR_ATIME) { 1160 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1161 len += 4; 1162 } 1163 } 1164 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1165 if (iap->ia_valid & ATTR_MTIME_SET) { 1166 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1167 len += 4 + (nfstime4_maxsz << 2); 1168 } else if (iap->ia_valid & ATTR_MTIME) { 1169 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1170 len += 4; 1171 } 1172 } 1173 1174 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) { 1175 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2); 1176 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL; 1177 } 1178 1179 xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval)); 1180 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len); 1181 1182 if (bmval[0] & FATTR4_WORD0_SIZE) 1183 p = xdr_encode_hyper(p, iap->ia_size); 1184 if (bmval[1] & FATTR4_WORD1_MODE) 1185 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1186 if (bmval[1] & FATTR4_WORD1_OWNER) 1187 p = xdr_encode_opaque(p, owner_name, owner_namelen); 1188 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) 1189 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 1190 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1191 if (iap->ia_valid & ATTR_ATIME_SET) { 1192 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1193 p = xdr_encode_nfstime4(p, &iap->ia_atime); 1194 } else 1195 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1196 } 1197 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1198 if (iap->ia_valid & ATTR_MTIME_SET) { 1199 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1200 p = xdr_encode_nfstime4(p, &iap->ia_mtime); 1201 } else 1202 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1203 } 1204 if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) { 1205 *p++ = cpu_to_be32(label->lfs); 1206 *p++ = cpu_to_be32(label->pi); 1207 *p++ = cpu_to_be32(label->len); 1208 p = xdr_encode_opaque_fixed(p, label->label, label->len); 1209 } 1210 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { 1211 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1212 *p++ = cpu_to_be32(*umask); 1213 } 1214 1215/* out: */ 1216} 1217 1218static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1219{ 1220 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); 1221 encode_uint32(xdr, access); 1222} 1223 1224static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1225{ 1226 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); 1227 encode_nfs4_seqid(xdr, arg->seqid); 1228 encode_nfs4_stateid(xdr, &arg->stateid); 1229} 1230 1231static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr) 1232{ 1233 __be32 *p; 1234 1235 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); 1236 p = reserve_space(xdr, 12); 1237 p = xdr_encode_hyper(p, args->offset); 1238 *p = cpu_to_be32(args->count); 1239} 1240 1241static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1242{ 1243 __be32 *p; 1244 1245 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); 1246 encode_uint32(xdr, create->ftype); 1247 1248 switch (create->ftype) { 1249 case NF4LNK: 1250 p = reserve_space(xdr, 4); 1251 *p = cpu_to_be32(create->u.symlink.len); 1252 xdr_write_pages(xdr, create->u.symlink.pages, 0, 1253 create->u.symlink.len); 1254 xdr->buf->flags |= XDRBUF_WRITE; 1255 break; 1256 1257 case NF4BLK: case NF4CHR: 1258 p = reserve_space(xdr, 8); 1259 *p++ = cpu_to_be32(create->u.device.specdata1); 1260 *p = cpu_to_be32(create->u.device.specdata2); 1261 break; 1262 1263 default: 1264 break; 1265 } 1266 1267 encode_string(xdr, create->name->len, create->name->name); 1268 encode_attrs(xdr, create->attrs, create->label, &create->umask, 1269 create->server, create->server->attr_bitmask); 1270} 1271 1272static void encode_getattr(struct xdr_stream *xdr, 1273 const __u32 *bitmap, const __u32 *mask, size_t len, 1274 struct compound_hdr *hdr) 1275{ 1276 __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz]; 1277 1278 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1279 if (mask) { 1280 if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap))) 1281 len = ARRAY_SIZE(masked_bitmap); 1282 len = mask_bitmap4(bitmap, mask, masked_bitmap, len); 1283 bitmap = masked_bitmap; 1284 } 1285 xdr_encode_bitmap4(xdr, bitmap, len); 1286} 1287 1288static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1289{ 1290 encode_getattr(xdr, nfs4_fattr_bitmap, bitmask, 1291 ARRAY_SIZE(nfs4_fattr_bitmap), hdr); 1292} 1293 1294static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask, 1295 const u32 *open_bitmap, 1296 struct compound_hdr *hdr) 1297{ 1298 encode_getattr(xdr, open_bitmap, bitmask, 3, hdr); 1299} 1300 1301static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1302{ 1303 encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask, 1304 ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr); 1305} 1306 1307static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1308{ 1309 encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask, 1310 ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr); 1311} 1312 1313static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1314{ 1315 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); 1316} 1317 1318static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1319{ 1320 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); 1321 encode_string(xdr, name->len, name->name); 1322} 1323 1324static inline int nfs4_lock_type(struct file_lock *fl, int block) 1325{ 1326 if (lock_is_read(fl)) 1327 return block ? NFS4_READW_LT : NFS4_READ_LT; 1328 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1329} 1330 1331static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1332{ 1333 if (fl->fl_end == OFFSET_MAX) 1334 return ~(uint64_t)0; 1335 return fl->fl_end - fl->fl_start + 1; 1336} 1337 1338static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1339{ 1340 __be32 *p; 1341 1342 p = reserve_space(xdr, 32); 1343 p = xdr_encode_hyper(p, lowner->clientid); 1344 *p++ = cpu_to_be32(20); 1345 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1346 *p++ = cpu_to_be32(lowner->s_dev); 1347 xdr_encode_hyper(p, lowner->id); 1348} 1349 1350/* 1351 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1352 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1353 */ 1354static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1355{ 1356 __be32 *p; 1357 1358 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); 1359 p = reserve_space(xdr, 28); 1360 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1361 *p++ = cpu_to_be32(args->reclaim); 1362 p = xdr_encode_hyper(p, args->fl->fl_start); 1363 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1364 *p = cpu_to_be32(args->new_lock_owner); 1365 if (args->new_lock_owner){ 1366 encode_nfs4_seqid(xdr, args->open_seqid); 1367 encode_nfs4_stateid(xdr, &args->open_stateid); 1368 encode_nfs4_seqid(xdr, args->lock_seqid); 1369 encode_lockowner(xdr, &args->lock_owner); 1370 } 1371 else { 1372 encode_nfs4_stateid(xdr, &args->lock_stateid); 1373 encode_nfs4_seqid(xdr, args->lock_seqid); 1374 } 1375} 1376 1377static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1378{ 1379 __be32 *p; 1380 1381 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); 1382 p = reserve_space(xdr, 20); 1383 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1384 p = xdr_encode_hyper(p, args->fl->fl_start); 1385 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1386 encode_lockowner(xdr, &args->lock_owner); 1387} 1388 1389static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1390{ 1391 __be32 *p; 1392 1393 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); 1394 encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); 1395 encode_nfs4_seqid(xdr, args->seqid); 1396 encode_nfs4_stateid(xdr, &args->stateid); 1397 p = reserve_space(xdr, 16); 1398 p = xdr_encode_hyper(p, args->fl->fl_start); 1399 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1400} 1401 1402static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1403{ 1404 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); 1405 encode_lockowner(xdr, lowner); 1406} 1407 1408static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1409{ 1410 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); 1411 encode_string(xdr, name->len, name->name); 1412} 1413 1414static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr) 1415{ 1416 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr); 1417} 1418 1419static void encode_share_access(struct xdr_stream *xdr, u32 share_access) 1420{ 1421 __be32 *p; 1422 1423 p = reserve_space(xdr, 8); 1424 *p++ = cpu_to_be32(share_access); 1425 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1426} 1427 1428static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1429{ 1430 __be32 *p; 1431 /* 1432 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1433 * owner 28 1434 */ 1435 encode_nfs4_seqid(xdr, arg->seqid); 1436 encode_share_access(xdr, arg->share_access); 1437 p = reserve_space(xdr, 40); 1438 p = xdr_encode_hyper(p, arg->clientid); 1439 *p++ = cpu_to_be32(28); 1440 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1441 *p++ = cpu_to_be32(arg->server->s_dev); 1442 p = xdr_encode_hyper(p, arg->id.uniquifier); 1443 xdr_encode_hyper(p, arg->id.create_time); 1444} 1445 1446static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1447{ 1448 __be32 *p; 1449 1450 p = reserve_space(xdr, 4); 1451 switch(arg->createmode) { 1452 case NFS4_CREATE_UNCHECKED: 1453 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1454 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1455 arg->server, arg->server->attr_bitmask); 1456 break; 1457 case NFS4_CREATE_GUARDED: 1458 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1459 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1460 arg->server, arg->server->attr_bitmask); 1461 break; 1462 case NFS4_CREATE_EXCLUSIVE: 1463 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1464 encode_nfs4_verifier(xdr, &arg->u.verifier); 1465 break; 1466 case NFS4_CREATE_EXCLUSIVE4_1: 1467 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1468 encode_nfs4_verifier(xdr, &arg->u.verifier); 1469 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1470 arg->server, arg->server->exclcreat_bitmask); 1471 } 1472} 1473 1474static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1475{ 1476 __be32 *p; 1477 1478 p = reserve_space(xdr, 4); 1479 switch (arg->open_flags & O_CREAT) { 1480 case 0: 1481 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1482 break; 1483 default: 1484 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1485 encode_createmode(xdr, arg); 1486 } 1487} 1488 1489static inline void encode_delegation_type(struct xdr_stream *xdr, u32 delegation_type) 1490{ 1491 __be32 *p; 1492 1493 p = reserve_space(xdr, 4); 1494 switch (delegation_type) { 1495 case NFS4_OPEN_DELEGATE_NONE: 1496 case NFS4_OPEN_DELEGATE_READ: 1497 case NFS4_OPEN_DELEGATE_WRITE: 1498 case NFS4_OPEN_DELEGATE_READ_ATTRS_DELEG: 1499 case NFS4_OPEN_DELEGATE_WRITE_ATTRS_DELEG: 1500 *p = cpu_to_be32(delegation_type); 1501 break; 1502 default: 1503 BUG(); 1504 } 1505} 1506 1507static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1508{ 1509 __be32 *p; 1510 1511 p = reserve_space(xdr, 4); 1512 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1513 encode_string(xdr, name->len, name->name); 1514} 1515 1516static inline void encode_claim_previous(struct xdr_stream *xdr, u32 type) 1517{ 1518 __be32 *p; 1519 1520 p = reserve_space(xdr, 4); 1521 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1522 encode_delegation_type(xdr, type); 1523} 1524 1525static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1526{ 1527 __be32 *p; 1528 1529 p = reserve_space(xdr, 4); 1530 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1531 encode_nfs4_stateid(xdr, stateid); 1532 encode_string(xdr, name->len, name->name); 1533} 1534 1535static inline void encode_claim_fh(struct xdr_stream *xdr) 1536{ 1537 __be32 *p; 1538 1539 p = reserve_space(xdr, 4); 1540 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH); 1541} 1542 1543static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1544{ 1545 __be32 *p; 1546 1547 p = reserve_space(xdr, 4); 1548 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH); 1549 encode_nfs4_stateid(xdr, stateid); 1550} 1551 1552static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1553{ 1554 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); 1555 encode_openhdr(xdr, arg); 1556 encode_opentype(xdr, arg); 1557 switch (arg->claim) { 1558 case NFS4_OPEN_CLAIM_NULL: 1559 encode_claim_null(xdr, arg->name); 1560 break; 1561 case NFS4_OPEN_CLAIM_PREVIOUS: 1562 encode_claim_previous(xdr, arg->u.delegation_type); 1563 break; 1564 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1565 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1566 break; 1567 case NFS4_OPEN_CLAIM_FH: 1568 encode_claim_fh(xdr); 1569 break; 1570 case NFS4_OPEN_CLAIM_DELEG_CUR_FH: 1571 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation); 1572 break; 1573 default: 1574 BUG(); 1575 } 1576} 1577 1578static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1579{ 1580 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); 1581 encode_nfs4_stateid(xdr, arg->stateid); 1582 encode_nfs4_seqid(xdr, arg->seqid); 1583} 1584 1585static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1586{ 1587 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); 1588 encode_nfs4_stateid(xdr, &arg->stateid); 1589 encode_nfs4_seqid(xdr, arg->seqid); 1590 encode_share_access(xdr, arg->share_access); 1591} 1592 1593static void 1594encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1595{ 1596 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); 1597 encode_string(xdr, fh->size, fh->data); 1598} 1599 1600static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1601{ 1602 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); 1603} 1604 1605static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1606 struct compound_hdr *hdr) 1607{ 1608 __be32 *p; 1609 1610 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); 1611 encode_nfs4_stateid(xdr, &args->stateid); 1612 1613 p = reserve_space(xdr, 12); 1614 p = xdr_encode_hyper(p, args->offset); 1615 *p = cpu_to_be32(args->count); 1616} 1617 1618static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1619{ 1620 uint32_t attrs[3] = { 1621 FATTR4_WORD0_TYPE 1622 | FATTR4_WORD0_RDATTR_ERROR, 1623 FATTR4_WORD1_MOUNTED_ON_FILEID, 1624 }; 1625 uint32_t dircount = readdir->count; 1626 uint32_t maxcount = readdir->count; 1627 __be32 *p, verf[2]; 1628 uint32_t attrlen = 0; 1629 unsigned int i; 1630 1631 if (readdir->plus) { 1632 attrs[0] |= FATTR4_WORD0_CHANGE 1633 | FATTR4_WORD0_SIZE 1634 | FATTR4_WORD0_FSID 1635 | FATTR4_WORD0_FILEHANDLE 1636 | FATTR4_WORD0_FILEID; 1637 attrs[1] |= FATTR4_WORD1_MODE 1638 | FATTR4_WORD1_NUMLINKS 1639 | FATTR4_WORD1_OWNER 1640 | FATTR4_WORD1_OWNER_GROUP 1641 | FATTR4_WORD1_RAWDEV 1642 | FATTR4_WORD1_SPACE_USED 1643 | FATTR4_WORD1_TIME_ACCESS 1644 | FATTR4_WORD1_TIME_CREATE 1645 | FATTR4_WORD1_TIME_METADATA 1646 | FATTR4_WORD1_TIME_MODIFY; 1647 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL; 1648 } 1649 /* Use mounted_on_fileid only if the server supports it */ 1650 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1651 attrs[0] |= FATTR4_WORD0_FILEID; 1652 for (i = 0; i < ARRAY_SIZE(attrs); i++) { 1653 attrs[i] &= readdir->bitmask[i]; 1654 if (attrs[i] != 0) 1655 attrlen = i+1; 1656 } 1657 1658 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); 1659 encode_uint64(xdr, readdir->cookie); 1660 encode_nfs4_verifier(xdr, &readdir->verifier); 1661 p = reserve_space(xdr, 12 + (attrlen << 2)); 1662 *p++ = cpu_to_be32(dircount); 1663 *p++ = cpu_to_be32(maxcount); 1664 *p++ = cpu_to_be32(attrlen); 1665 for (i = 0; i < attrlen; i++) 1666 *p++ = cpu_to_be32(attrs[i]); 1667 memcpy(verf, readdir->verifier.data, sizeof(verf)); 1668 1669 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n", 1670 __func__, 1671 (unsigned long long)readdir->cookie, 1672 verf[0], verf[1], 1673 attrs[0] & readdir->bitmask[0], 1674 attrs[1] & readdir->bitmask[1], 1675 attrs[2] & readdir->bitmask[2]); 1676} 1677 1678static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1679{ 1680 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); 1681} 1682 1683static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1684{ 1685 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); 1686 encode_string(xdr, name->len, name->name); 1687} 1688 1689static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1690{ 1691 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); 1692 encode_string(xdr, oldname->len, oldname->name); 1693 encode_string(xdr, newname->len, newname->name); 1694} 1695 1696static void encode_renew(struct xdr_stream *xdr, clientid4 clid, 1697 struct compound_hdr *hdr) 1698{ 1699 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); 1700 encode_uint64(xdr, clid); 1701} 1702 1703static void 1704encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1705{ 1706 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); 1707} 1708 1709static void nfs4_acltype_to_bitmap(enum nfs4_acl_type type, __u32 bitmap[2]) 1710{ 1711 switch (type) { 1712 default: 1713 bitmap[0] = FATTR4_WORD0_ACL; 1714 bitmap[1] = 0; 1715 break; 1716 case NFS4ACL_DACL: 1717 bitmap[0] = 0; 1718 bitmap[1] = FATTR4_WORD1_DACL; 1719 break; 1720 case NFS4ACL_SACL: 1721 bitmap[0] = 0; 1722 bitmap[1] = FATTR4_WORD1_SACL; 1723 } 1724} 1725 1726static void encode_setacl(struct xdr_stream *xdr, 1727 const struct nfs_setaclargs *arg, 1728 struct compound_hdr *hdr) 1729{ 1730 __u32 bitmap[2]; 1731 1732 nfs4_acltype_to_bitmap(arg->acl_type, bitmap); 1733 1734 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1735 encode_nfs4_stateid(xdr, &zero_stateid); 1736 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap)); 1737 encode_uint32(xdr, arg->acl_len); 1738 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len); 1739} 1740 1741static void 1742encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1743{ 1744 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1745} 1746 1747static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1748{ 1749 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1750 encode_nfs4_stateid(xdr, &arg->stateid); 1751 encode_attrs(xdr, arg->iap, arg->label, NULL, server, 1752 server->attr_bitmask); 1753} 1754 1755static void encode_delegattr(struct xdr_stream *xdr, 1756 const nfs4_stateid *stateid, 1757 const struct nfs4_delegattr *attr, 1758 struct compound_hdr *hdr) 1759{ 1760 uint32_t bitmap[3] = { 0 }; 1761 uint32_t len = 0; 1762 __be32 *p; 1763 1764 encode_op_hdr(xdr, OP_SETATTR, encode_delegattr_maxsz, hdr); 1765 encode_nfs4_stateid(xdr, stateid); 1766 if (attr->atime_set) { 1767 bitmap[2] |= FATTR4_WORD2_TIME_DELEG_ACCESS; 1768 len += (nfstime4_maxsz << 2); 1769 } 1770 if (attr->mtime_set) { 1771 bitmap[2] |= FATTR4_WORD2_TIME_DELEG_MODIFY; 1772 len += (nfstime4_maxsz << 2); 1773 } 1774 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap)); 1775 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len); 1776 if (bitmap[2] & FATTR4_WORD2_TIME_DELEG_ACCESS) 1777 p = xdr_encode_nfstime4(p, &attr->atime); 1778 if (bitmap[2] & FATTR4_WORD2_TIME_DELEG_MODIFY) 1779 p = xdr_encode_nfstime4(p, &attr->mtime); 1780} 1781 1782static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1783{ 1784 __be32 *p; 1785 1786 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1787 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1788 1789 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id), 1790 setclientid->sc_clnt->cl_owner_id); 1791 p = reserve_space(xdr, 4); 1792 *p = cpu_to_be32(setclientid->sc_prog); 1793 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1794 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1795 p = reserve_space(xdr, 4); 1796 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident); 1797} 1798 1799static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1800{ 1801 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1802 decode_setclientid_confirm_maxsz, hdr); 1803 encode_uint64(xdr, arg->clientid); 1804 encode_nfs4_verifier(xdr, &arg->confirm); 1805} 1806 1807static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1808 struct compound_hdr *hdr) 1809{ 1810 __be32 *p; 1811 1812 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1813 encode_nfs4_stateid(xdr, &args->stateid); 1814 1815 p = reserve_space(xdr, 16); 1816 p = xdr_encode_hyper(p, args->offset); 1817 *p++ = cpu_to_be32(args->stable); 1818 *p = cpu_to_be32(args->count); 1819 1820 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1821} 1822 1823static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1824{ 1825 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1826 encode_nfs4_stateid(xdr, stateid); 1827} 1828 1829static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1830{ 1831 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1832 encode_string(xdr, name->len, name->name); 1833} 1834 1835#if defined(CONFIG_NFS_V4_1) 1836/* NFSv4.1 operations */ 1837static void encode_bind_conn_to_session(struct xdr_stream *xdr, 1838 const struct nfs41_bind_conn_to_session_args *args, 1839 struct compound_hdr *hdr) 1840{ 1841 __be32 *p; 1842 1843 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION, 1844 decode_bind_conn_to_session_maxsz, hdr); 1845 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN); 1846 p = xdr_reserve_space(xdr, 8); 1847 *p++ = cpu_to_be32(args->dir); 1848 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0); 1849} 1850 1851static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map) 1852{ 1853 unsigned int i; 1854 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS); 1855 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) 1856 encode_uint32(xdr, op_map->u.words[i]); 1857} 1858 1859static void encode_exchange_id(struct xdr_stream *xdr, 1860 const struct nfs41_exchange_id_args *args, 1861 struct compound_hdr *hdr) 1862{ 1863 __be32 *p; 1864 char impl_name[IMPL_NAME_LIMIT]; 1865 int len = 0; 1866 1867 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1868 encode_nfs4_verifier(xdr, &args->verifier); 1869 1870 encode_string(xdr, strlen(args->client->cl_owner_id), 1871 args->client->cl_owner_id); 1872 1873 encode_uint32(xdr, args->flags); 1874 encode_uint32(xdr, args->state_protect.how); 1875 1876 switch (args->state_protect.how) { 1877 case SP4_NONE: 1878 break; 1879 case SP4_MACH_CRED: 1880 encode_op_map(xdr, &args->state_protect.enforce); 1881 encode_op_map(xdr, &args->state_protect.allow); 1882 break; 1883 default: 1884 WARN_ON_ONCE(1); 1885 break; 1886 } 1887 1888 if (send_implementation_id && 1889 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1890 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1891 <= sizeof(impl_name) + 1) 1892 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1893 utsname()->sysname, utsname()->release, 1894 utsname()->version, utsname()->machine); 1895 1896 if (len > 0) { 1897 encode_uint32(xdr, 1); /* implementation id array length=1 */ 1898 1899 encode_string(xdr, 1900 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1901 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1902 encode_string(xdr, len, impl_name); 1903 /* just send zeros for nii_date - the date is in nii_name */ 1904 p = reserve_space(xdr, 12); 1905 p = xdr_encode_hyper(p, 0); 1906 *p = cpu_to_be32(0); 1907 } else 1908 encode_uint32(xdr, 0); /* implementation id array length=0 */ 1909} 1910 1911static void encode_create_session(struct xdr_stream *xdr, 1912 const struct nfs41_create_session_args *args, 1913 struct compound_hdr *hdr) 1914{ 1915 __be32 *p; 1916 struct nfs_client *clp = args->client; 1917 struct rpc_clnt *clnt = clp->cl_rpcclient; 1918 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 1919 u32 max_resp_sz_cached; 1920 1921 /* 1922 * Assumes OPEN is the biggest non-idempotent compound. 1923 * 2 is the verifier. 1924 */ 1925 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2) 1926 * XDR_UNIT + RPC_MAX_AUTH_SIZE; 1927 1928 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1929 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12); 1930 p = xdr_encode_hyper(p, args->clientid); 1931 *p++ = cpu_to_be32(args->seqid); /*Sequence id */ 1932 *p++ = cpu_to_be32(args->flags); /*flags */ 1933 1934 /* Fore Channel */ 1935 *p++ = cpu_to_be32(0); /* header padding size */ 1936 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1937 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1938 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1939 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1940 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1941 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1942 1943 /* Back Channel */ 1944 *p++ = cpu_to_be32(0); /* header padding size */ 1945 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1946 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1947 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1948 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1949 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1950 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1951 1952 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1953 *p++ = cpu_to_be32(1); 1954 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1955 1956 /* authsys_parms rfc1831 */ 1957 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */ 1958 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen); 1959 *p++ = cpu_to_be32(0); /* UID */ 1960 *p++ = cpu_to_be32(0); /* GID */ 1961 *p = cpu_to_be32(0); /* No more gids */ 1962} 1963 1964static void encode_destroy_session(struct xdr_stream *xdr, 1965 const struct nfs4_session *session, 1966 struct compound_hdr *hdr) 1967{ 1968 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1969 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1970} 1971 1972static void encode_destroy_clientid(struct xdr_stream *xdr, 1973 uint64_t clientid, 1974 struct compound_hdr *hdr) 1975{ 1976 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr); 1977 encode_uint64(xdr, clientid); 1978} 1979 1980static void encode_reclaim_complete(struct xdr_stream *xdr, 1981 const struct nfs41_reclaim_complete_args *args, 1982 struct compound_hdr *hdr) 1983{ 1984 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1985 encode_uint32(xdr, args->one_fs); 1986} 1987#endif /* CONFIG_NFS_V4_1 */ 1988 1989static void encode_sequence(struct xdr_stream *xdr, 1990 const struct nfs4_sequence_args *args, 1991 struct compound_hdr *hdr) 1992{ 1993#if defined(CONFIG_NFS_V4_1) 1994 struct nfs4_session *session; 1995 struct nfs4_slot_table *tp; 1996 struct nfs4_slot *slot = args->sa_slot; 1997 __be32 *p; 1998 1999 tp = slot->table; 2000 session = tp->session; 2001 if (!session) 2002 return; 2003 2004 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 2005 2006 /* 2007 * Sessionid + seqid + slotid + max slotid + cache_this 2008 */ 2009 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 2010 "max_slotid=%d cache_this=%d\n", 2011 __func__, 2012 ((u32 *)session->sess_id.data)[0], 2013 ((u32 *)session->sess_id.data)[1], 2014 ((u32 *)session->sess_id.data)[2], 2015 ((u32 *)session->sess_id.data)[3], 2016 slot->seq_nr, slot->slot_nr, 2017 tp->highest_used_slotid, args->sa_cache_this); 2018 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 2019 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 2020 *p++ = cpu_to_be32(slot->seq_nr); 2021 *p++ = cpu_to_be32(slot->slot_nr); 2022 *p++ = cpu_to_be32(tp->highest_used_slotid); 2023 *p = cpu_to_be32(args->sa_cache_this); 2024#endif /* CONFIG_NFS_V4_1 */ 2025} 2026 2027#ifdef CONFIG_NFS_V4_1 2028static void 2029encode_get_dir_delegation(struct xdr_stream *xdr, struct compound_hdr *hdr) 2030{ 2031 struct timespec64 ts = { 0, 0 }; 2032 u32 notifications[1] = { 0 }; 2033 u32 attributes[1] = { 0 }; 2034 __be32 *p; 2035 2036 encode_op_hdr(xdr, OP_GET_DIR_DELEGATION, decode_get_dir_deleg_maxsz, hdr); 2037 2038 /* We don't handle CB_RECALLABLE_OBJ_AVAIL yet. */ 2039 xdr_stream_encode_bool(xdr, false); 2040 2041 xdr_encode_bitmap4(xdr, notifications, ARRAY_SIZE(notifications)); 2042 2043 /* Request no delay on attribute updates */ 2044 p = reserve_space(xdr, 12 + 12); 2045 p = xdr_encode_nfstime4(p, &ts); 2046 xdr_encode_nfstime4(p, &ts); 2047 2048 /* Requested child attributes */ 2049 xdr_encode_bitmap4(xdr, attributes, ARRAY_SIZE(attributes)); 2050 2051 /* Requested dir attributes */ 2052 xdr_encode_bitmap4(xdr, attributes, ARRAY_SIZE(attributes)); 2053} 2054 2055static void 2056encode_getdeviceinfo(struct xdr_stream *xdr, 2057 const struct nfs4_getdeviceinfo_args *args, 2058 struct compound_hdr *hdr) 2059{ 2060 __be32 *p; 2061 2062 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 2063 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4); 2064 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 2065 NFS4_DEVICEID4_SIZE); 2066 *p++ = cpu_to_be32(args->pdev->layout_type); 2067 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */ 2068 2069 p = reserve_space(xdr, 4 + 4); 2070 *p++ = cpu_to_be32(1); /* bitmap length */ 2071 *p++ = cpu_to_be32(args->notify_types); 2072} 2073 2074static void 2075encode_layoutget(struct xdr_stream *xdr, 2076 const struct nfs4_layoutget_args *args, 2077 struct compound_hdr *hdr) 2078{ 2079 __be32 *p; 2080 2081 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 2082 p = reserve_space(xdr, 36); 2083 *p++ = cpu_to_be32(0); /* Signal layout available */ 2084 *p++ = cpu_to_be32(args->type); 2085 *p++ = cpu_to_be32(args->range.iomode); 2086 p = xdr_encode_hyper(p, args->range.offset); 2087 p = xdr_encode_hyper(p, args->range.length); 2088 p = xdr_encode_hyper(p, args->minlength); 2089 encode_nfs4_stateid(xdr, &args->stateid); 2090 encode_uint32(xdr, args->maxcount); 2091 2092 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 2093 __func__, 2094 args->type, 2095 args->range.iomode, 2096 (unsigned long)args->range.offset, 2097 (unsigned long)args->range.length, 2098 args->maxcount); 2099} 2100 2101static int 2102encode_layoutcommit(struct xdr_stream *xdr, 2103 struct inode *inode, 2104 const struct nfs4_layoutcommit_args *args, 2105 struct compound_hdr *hdr) 2106{ 2107 __be32 *p; 2108 2109 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 2110 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 2111 2112 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 2113 p = reserve_space(xdr, 20); 2114 /* Only whole file layouts */ 2115 p = xdr_encode_hyper(p, 0); /* offset */ 2116 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 2117 *p = cpu_to_be32(0); /* reclaim */ 2118 encode_nfs4_stateid(xdr, &args->stateid); 2119 if (args->lastbytewritten != U64_MAX) { 2120 p = reserve_space(xdr, 20); 2121 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 2122 p = xdr_encode_hyper(p, args->lastbytewritten); 2123 } else { 2124 p = reserve_space(xdr, 12); 2125 *p++ = cpu_to_be32(0); /* newoffset = FALSE */ 2126 } 2127 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 2128 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 2129 2130 encode_uint32(xdr, args->layoutupdate_len); 2131 if (args->layoutupdate_pages) 2132 xdr_write_pages(xdr, args->layoutupdate_pages, 0, 2133 args->layoutupdate_len); 2134 2135 return 0; 2136} 2137 2138static void 2139encode_layoutreturn(struct xdr_stream *xdr, 2140 const struct nfs4_layoutreturn_args *args, 2141 struct compound_hdr *hdr) 2142{ 2143 __be32 *p; 2144 2145 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 2146 p = reserve_space(xdr, 16); 2147 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2148 *p++ = cpu_to_be32(args->layout_type); 2149 *p++ = cpu_to_be32(args->range.iomode); 2150 *p = cpu_to_be32(RETURN_FILE); 2151 p = reserve_space(xdr, 16); 2152 p = xdr_encode_hyper(p, args->range.offset); 2153 p = xdr_encode_hyper(p, args->range.length); 2154 spin_lock(&args->inode->i_lock); 2155 encode_nfs4_stateid(xdr, &args->stateid); 2156 spin_unlock(&args->inode->i_lock); 2157 if (args->ld_private->ops && args->ld_private->ops->encode) 2158 args->ld_private->ops->encode(xdr, args, args->ld_private); 2159 else 2160 encode_uint32(xdr, 0); 2161} 2162 2163static int 2164encode_secinfo_no_name(struct xdr_stream *xdr, 2165 const struct nfs41_secinfo_no_name_args *args, 2166 struct compound_hdr *hdr) 2167{ 2168 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 2169 encode_uint32(xdr, args->style); 2170 return 0; 2171} 2172 2173static void encode_test_stateid(struct xdr_stream *xdr, 2174 const struct nfs41_test_stateid_args *args, 2175 struct compound_hdr *hdr) 2176{ 2177 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 2178 encode_uint32(xdr, 1); 2179 encode_nfs4_stateid(xdr, &args->stateid); 2180} 2181 2182static void encode_free_stateid(struct xdr_stream *xdr, 2183 const struct nfs41_free_stateid_args *args, 2184 struct compound_hdr *hdr) 2185{ 2186 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 2187 encode_nfs4_stateid(xdr, &args->stateid); 2188} 2189#else 2190static inline void 2191encode_get_dir_delegation(struct xdr_stream *xdr, struct compound_hdr *hdr) 2192{ 2193} 2194 2195static inline void 2196encode_layoutreturn(struct xdr_stream *xdr, 2197 const struct nfs4_layoutreturn_args *args, 2198 struct compound_hdr *hdr) 2199{ 2200} 2201 2202static void 2203encode_layoutget(struct xdr_stream *xdr, 2204 const struct nfs4_layoutget_args *args, 2205 struct compound_hdr *hdr) 2206{ 2207} 2208#endif /* CONFIG_NFS_V4_1 */ 2209 2210/* 2211 * END OF "GENERIC" ENCODE ROUTINES. 2212 */ 2213 2214static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2215{ 2216#if defined(CONFIG_NFS_V4_1) 2217 struct nfs4_session *session = args->sa_slot->table->session; 2218 if (session) 2219 return session->clp->cl_mvops->minor_version; 2220#endif /* CONFIG_NFS_V4_1 */ 2221 return 0; 2222} 2223 2224/* 2225 * Encode an ACCESS request 2226 */ 2227static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2228 const void *data) 2229{ 2230 const struct nfs4_accessargs *args = data; 2231 struct compound_hdr hdr = { 2232 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2233 }; 2234 2235 encode_compound_hdr(xdr, req, &hdr); 2236 encode_sequence(xdr, &args->seq_args, &hdr); 2237 encode_putfh(xdr, args->fh, &hdr); 2238 encode_access(xdr, args->access, &hdr); 2239 if (args->bitmask) 2240 encode_getfattr(xdr, args->bitmask, &hdr); 2241 encode_nops(&hdr); 2242} 2243 2244/* 2245 * Encode LOOKUP request 2246 */ 2247static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2248 const void *data) 2249{ 2250 const struct nfs4_lookup_arg *args = data; 2251 struct compound_hdr hdr = { 2252 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2253 }; 2254 2255 encode_compound_hdr(xdr, req, &hdr); 2256 encode_sequence(xdr, &args->seq_args, &hdr); 2257 encode_putfh(xdr, args->dir_fh, &hdr); 2258 encode_lookup(xdr, args->name, &hdr); 2259 encode_getfh(xdr, &hdr); 2260 encode_getfattr(xdr, args->bitmask, &hdr); 2261 encode_nops(&hdr); 2262} 2263 2264/* 2265 * Encode LOOKUPP request 2266 */ 2267static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr, 2268 const void *data) 2269{ 2270 const struct nfs4_lookupp_arg *args = data; 2271 struct compound_hdr hdr = { 2272 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2273 }; 2274 2275 encode_compound_hdr(xdr, req, &hdr); 2276 encode_sequence(xdr, &args->seq_args, &hdr); 2277 encode_putfh(xdr, args->fh, &hdr); 2278 encode_lookupp(xdr, &hdr); 2279 encode_getfh(xdr, &hdr); 2280 encode_getfattr(xdr, args->bitmask, &hdr); 2281 encode_nops(&hdr); 2282} 2283 2284/* 2285 * Encode LOOKUP_ROOT request 2286 */ 2287static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2288 struct xdr_stream *xdr, 2289 const void *data) 2290{ 2291 const struct nfs4_lookup_root_arg *args = data; 2292 struct compound_hdr hdr = { 2293 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2294 }; 2295 2296 encode_compound_hdr(xdr, req, &hdr); 2297 encode_sequence(xdr, &args->seq_args, &hdr); 2298 encode_putrootfh(xdr, &hdr); 2299 encode_getfh(xdr, &hdr); 2300 encode_getfattr(xdr, args->bitmask, &hdr); 2301 encode_nops(&hdr); 2302} 2303 2304/* 2305 * Encode REMOVE request 2306 */ 2307static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2308 const void *data) 2309{ 2310 const struct nfs_removeargs *args = data; 2311 struct compound_hdr hdr = { 2312 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2313 }; 2314 2315 encode_compound_hdr(xdr, req, &hdr); 2316 encode_sequence(xdr, &args->seq_args, &hdr); 2317 encode_putfh(xdr, args->fh, &hdr); 2318 encode_remove(xdr, &args->name, &hdr); 2319 encode_nops(&hdr); 2320} 2321 2322/* 2323 * Encode RENAME request 2324 */ 2325static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2326 const void *data) 2327{ 2328 const struct nfs_renameargs *args = data; 2329 struct compound_hdr hdr = { 2330 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2331 }; 2332 2333 encode_compound_hdr(xdr, req, &hdr); 2334 encode_sequence(xdr, &args->seq_args, &hdr); 2335 encode_putfh(xdr, args->old_dir, &hdr); 2336 encode_savefh(xdr, &hdr); 2337 encode_putfh(xdr, args->new_dir, &hdr); 2338 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2339 encode_nops(&hdr); 2340} 2341 2342/* 2343 * Encode LINK request 2344 */ 2345static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2346 const void *data) 2347{ 2348 const struct nfs4_link_arg *args = data; 2349 struct compound_hdr hdr = { 2350 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2351 }; 2352 2353 encode_compound_hdr(xdr, req, &hdr); 2354 encode_sequence(xdr, &args->seq_args, &hdr); 2355 encode_putfh(xdr, args->fh, &hdr); 2356 encode_savefh(xdr, &hdr); 2357 encode_putfh(xdr, args->dir_fh, &hdr); 2358 encode_link(xdr, args->name, &hdr); 2359 encode_restorefh(xdr, &hdr); 2360 encode_getfattr(xdr, args->bitmask, &hdr); 2361 encode_nops(&hdr); 2362} 2363 2364/* 2365 * Encode CREATE request 2366 */ 2367static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2368 const void *data) 2369{ 2370 const struct nfs4_create_arg *args = data; 2371 struct compound_hdr hdr = { 2372 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2373 }; 2374 2375 encode_compound_hdr(xdr, req, &hdr); 2376 encode_sequence(xdr, &args->seq_args, &hdr); 2377 encode_putfh(xdr, args->dir_fh, &hdr); 2378 encode_create(xdr, args, &hdr); 2379 encode_getfh(xdr, &hdr); 2380 encode_getfattr(xdr, args->bitmask, &hdr); 2381 encode_nops(&hdr); 2382} 2383 2384/* 2385 * Encode SYMLINK request 2386 */ 2387static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2388 const void *data) 2389{ 2390 const struct nfs4_create_arg *args = data; 2391 2392 nfs4_xdr_enc_create(req, xdr, args); 2393} 2394 2395/* 2396 * Encode GETATTR request 2397 */ 2398static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2399 const void *data) 2400{ 2401 const struct nfs4_getattr_arg *args = data; 2402 struct compound_hdr hdr = { 2403 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2404 }; 2405 2406 encode_compound_hdr(xdr, req, &hdr); 2407 encode_sequence(xdr, &args->seq_args, &hdr); 2408 encode_putfh(xdr, args->fh, &hdr); 2409 if (args->get_dir_deleg) 2410 encode_get_dir_delegation(xdr, &hdr); 2411 encode_getfattr(xdr, args->bitmask, &hdr); 2412 encode_nops(&hdr); 2413} 2414 2415/* 2416 * Encode a CLOSE request 2417 */ 2418static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2419 const void *data) 2420{ 2421 const struct nfs_closeargs *args = data; 2422 struct compound_hdr hdr = { 2423 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2424 }; 2425 2426 encode_compound_hdr(xdr, req, &hdr); 2427 encode_sequence(xdr, &args->seq_args, &hdr); 2428 encode_putfh(xdr, args->fh, &hdr); 2429 if (args->lr_args) 2430 encode_layoutreturn(xdr, args->lr_args, &hdr); 2431 if (args->bitmask != NULL) 2432 encode_getfattr(xdr, args->bitmask, &hdr); 2433 encode_close(xdr, args, &hdr); 2434 encode_nops(&hdr); 2435} 2436 2437/* 2438 * Encode an OPEN request 2439 */ 2440static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2441 const void *data) 2442{ 2443 const struct nfs_openargs *args = data; 2444 struct compound_hdr hdr = { 2445 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2446 }; 2447 2448 encode_compound_hdr(xdr, req, &hdr); 2449 encode_sequence(xdr, &args->seq_args, &hdr); 2450 encode_putfh(xdr, args->fh, &hdr); 2451 encode_open(xdr, args, &hdr); 2452 encode_getfh(xdr, &hdr); 2453 if (args->access) 2454 encode_access(xdr, args->access, &hdr); 2455 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2456 if (args->lg_args) { 2457 encode_layoutget(xdr, args->lg_args, &hdr); 2458 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0, 2459 args->lg_args->layout.pglen, 2460 hdr.replen - pagepad_maxsz); 2461 } 2462 encode_nops(&hdr); 2463} 2464 2465/* 2466 * Encode an OPEN_CONFIRM request 2467 */ 2468static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2469 struct xdr_stream *xdr, 2470 const void *data) 2471{ 2472 const struct nfs_open_confirmargs *args = data; 2473 struct compound_hdr hdr = { 2474 .nops = 0, 2475 }; 2476 2477 encode_compound_hdr(xdr, req, &hdr); 2478 encode_putfh(xdr, args->fh, &hdr); 2479 encode_open_confirm(xdr, args, &hdr); 2480 encode_nops(&hdr); 2481} 2482 2483/* 2484 * Encode an OPEN request with no attributes. 2485 */ 2486static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2487 struct xdr_stream *xdr, 2488 const void *data) 2489{ 2490 const struct nfs_openargs *args = data; 2491 struct compound_hdr hdr = { 2492 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2493 }; 2494 2495 encode_compound_hdr(xdr, req, &hdr); 2496 encode_sequence(xdr, &args->seq_args, &hdr); 2497 encode_putfh(xdr, args->fh, &hdr); 2498 encode_open(xdr, args, &hdr); 2499 if (args->access) 2500 encode_access(xdr, args->access, &hdr); 2501 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2502 if (args->lg_args) { 2503 encode_layoutget(xdr, args->lg_args, &hdr); 2504 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0, 2505 args->lg_args->layout.pglen, 2506 hdr.replen - pagepad_maxsz); 2507 } 2508 encode_nops(&hdr); 2509} 2510 2511/* 2512 * Encode an OPEN_DOWNGRADE request 2513 */ 2514static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2515 struct xdr_stream *xdr, 2516 const void *data) 2517{ 2518 const struct nfs_closeargs *args = data; 2519 struct compound_hdr hdr = { 2520 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2521 }; 2522 2523 encode_compound_hdr(xdr, req, &hdr); 2524 encode_sequence(xdr, &args->seq_args, &hdr); 2525 encode_putfh(xdr, args->fh, &hdr); 2526 if (args->lr_args) 2527 encode_layoutreturn(xdr, args->lr_args, &hdr); 2528 encode_open_downgrade(xdr, args, &hdr); 2529 encode_nops(&hdr); 2530} 2531 2532/* 2533 * Encode a LOCK request 2534 */ 2535static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2536 const void *data) 2537{ 2538 const struct nfs_lock_args *args = data; 2539 struct compound_hdr hdr = { 2540 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2541 }; 2542 2543 encode_compound_hdr(xdr, req, &hdr); 2544 encode_sequence(xdr, &args->seq_args, &hdr); 2545 encode_putfh(xdr, args->fh, &hdr); 2546 encode_lock(xdr, args, &hdr); 2547 encode_nops(&hdr); 2548} 2549 2550/* 2551 * Encode a LOCKT request 2552 */ 2553static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2554 const void *data) 2555{ 2556 const struct nfs_lockt_args *args = data; 2557 struct compound_hdr hdr = { 2558 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2559 }; 2560 2561 encode_compound_hdr(xdr, req, &hdr); 2562 encode_sequence(xdr, &args->seq_args, &hdr); 2563 encode_putfh(xdr, args->fh, &hdr); 2564 encode_lockt(xdr, args, &hdr); 2565 encode_nops(&hdr); 2566} 2567 2568/* 2569 * Encode a LOCKU request 2570 */ 2571static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2572 const void *data) 2573{ 2574 const struct nfs_locku_args *args = data; 2575 struct compound_hdr hdr = { 2576 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2577 }; 2578 2579 encode_compound_hdr(xdr, req, &hdr); 2580 encode_sequence(xdr, &args->seq_args, &hdr); 2581 encode_putfh(xdr, args->fh, &hdr); 2582 encode_locku(xdr, args, &hdr); 2583 encode_nops(&hdr); 2584} 2585 2586static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2587 struct xdr_stream *xdr, 2588 const void *data) 2589{ 2590 const struct nfs_release_lockowner_args *args = data; 2591 struct compound_hdr hdr = { 2592 .minorversion = 0, 2593 }; 2594 2595 encode_compound_hdr(xdr, req, &hdr); 2596 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2597 encode_nops(&hdr); 2598} 2599 2600/* 2601 * Encode a READLINK request 2602 */ 2603static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2604 const void *data) 2605{ 2606 const struct nfs4_readlink *args = data; 2607 struct compound_hdr hdr = { 2608 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2609 }; 2610 2611 encode_compound_hdr(xdr, req, &hdr); 2612 encode_sequence(xdr, &args->seq_args, &hdr); 2613 encode_putfh(xdr, args->fh, &hdr); 2614 encode_readlink(xdr, args, req, &hdr); 2615 2616 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2617 args->pglen, hdr.replen - pagepad_maxsz); 2618 encode_nops(&hdr); 2619} 2620 2621/* 2622 * Encode a READDIR request 2623 */ 2624static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2625 const void *data) 2626{ 2627 const struct nfs4_readdir_arg *args = data; 2628 struct compound_hdr hdr = { 2629 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2630 }; 2631 2632 encode_compound_hdr(xdr, req, &hdr); 2633 encode_sequence(xdr, &args->seq_args, &hdr); 2634 encode_putfh(xdr, args->fh, &hdr); 2635 encode_readdir(xdr, args, req, &hdr); 2636 2637 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2638 args->count, hdr.replen - pagepad_maxsz); 2639 encode_nops(&hdr); 2640} 2641 2642/* 2643 * Encode a READ request 2644 */ 2645static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2646 const void *data) 2647{ 2648 const struct nfs_pgio_args *args = data; 2649 struct compound_hdr hdr = { 2650 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2651 }; 2652 2653 encode_compound_hdr(xdr, req, &hdr); 2654 encode_sequence(xdr, &args->seq_args, &hdr); 2655 encode_putfh(xdr, args->fh, &hdr); 2656 encode_read(xdr, args, &hdr); 2657 2658 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2659 args->count, hdr.replen - pagepad_maxsz); 2660 req->rq_rcv_buf.flags |= XDRBUF_READ; 2661 encode_nops(&hdr); 2662} 2663 2664/* 2665 * Encode an SETATTR request 2666 */ 2667static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2668 const void *data) 2669{ 2670 const struct nfs_setattrargs *args = data; 2671 struct compound_hdr hdr = { 2672 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2673 }; 2674 2675 encode_compound_hdr(xdr, req, &hdr); 2676 encode_sequence(xdr, &args->seq_args, &hdr); 2677 encode_putfh(xdr, args->fh, &hdr); 2678 encode_setattr(xdr, args, args->server, &hdr); 2679 encode_getfattr(xdr, args->bitmask, &hdr); 2680 encode_nops(&hdr); 2681} 2682 2683/* 2684 * Encode a GETACL request 2685 */ 2686static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2687 const void *data) 2688{ 2689 const struct nfs_getaclargs *args = data; 2690 struct compound_hdr hdr = { 2691 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2692 }; 2693 __u32 nfs4_acl_bitmap[2]; 2694 uint32_t replen; 2695 2696 nfs4_acltype_to_bitmap(args->acl_type, nfs4_acl_bitmap); 2697 2698 encode_compound_hdr(xdr, req, &hdr); 2699 encode_sequence(xdr, &args->seq_args, &hdr); 2700 encode_putfh(xdr, args->fh, &hdr); 2701 replen = hdr.replen + op_decode_hdr_maxsz; 2702 encode_getattr(xdr, nfs4_acl_bitmap, NULL, 2703 ARRAY_SIZE(nfs4_acl_bitmap), &hdr); 2704 2705 rpc_prepare_reply_pages(req, args->acl_pages, 0, 2706 args->acl_len, replen); 2707 encode_nops(&hdr); 2708} 2709 2710/* 2711 * Encode a WRITE request 2712 */ 2713static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2714 const void *data) 2715{ 2716 const struct nfs_pgio_args *args = data; 2717 struct compound_hdr hdr = { 2718 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2719 }; 2720 2721 encode_compound_hdr(xdr, req, &hdr); 2722 encode_sequence(xdr, &args->seq_args, &hdr); 2723 encode_putfh(xdr, args->fh, &hdr); 2724 encode_write(xdr, args, &hdr); 2725 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2726 if (args->bitmask) 2727 encode_getfattr(xdr, args->bitmask, &hdr); 2728 encode_nops(&hdr); 2729} 2730 2731/* 2732 * a COMMIT request 2733 */ 2734static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2735 const void *data) 2736{ 2737 const struct nfs_commitargs *args = data; 2738 struct compound_hdr hdr = { 2739 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2740 }; 2741 2742 encode_compound_hdr(xdr, req, &hdr); 2743 encode_sequence(xdr, &args->seq_args, &hdr); 2744 encode_putfh(xdr, args->fh, &hdr); 2745 encode_commit(xdr, args, &hdr); 2746 encode_nops(&hdr); 2747} 2748 2749/* 2750 * FSINFO request 2751 */ 2752static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2753 const void *data) 2754{ 2755 const struct nfs4_fsinfo_arg *args = data; 2756 struct compound_hdr hdr = { 2757 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2758 }; 2759 2760 encode_compound_hdr(xdr, req, &hdr); 2761 encode_sequence(xdr, &args->seq_args, &hdr); 2762 encode_putfh(xdr, args->fh, &hdr); 2763 encode_fsinfo(xdr, args->bitmask, &hdr); 2764 encode_nops(&hdr); 2765} 2766 2767/* 2768 * a PATHCONF request 2769 */ 2770static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2771 const void *data) 2772{ 2773 const struct nfs4_pathconf_arg *args = data; 2774 struct compound_hdr hdr = { 2775 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2776 }; 2777 2778 encode_compound_hdr(xdr, req, &hdr); 2779 encode_sequence(xdr, &args->seq_args, &hdr); 2780 encode_putfh(xdr, args->fh, &hdr); 2781 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask, 2782 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr); 2783 encode_nops(&hdr); 2784} 2785 2786/* 2787 * a STATFS request 2788 */ 2789static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2790 const void *data) 2791{ 2792 const struct nfs4_statfs_arg *args = data; 2793 struct compound_hdr hdr = { 2794 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2795 }; 2796 2797 encode_compound_hdr(xdr, req, &hdr); 2798 encode_sequence(xdr, &args->seq_args, &hdr); 2799 encode_putfh(xdr, args->fh, &hdr); 2800 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask, 2801 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr); 2802 encode_nops(&hdr); 2803} 2804 2805/* 2806 * GETATTR_BITMAP request 2807 */ 2808static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2809 struct xdr_stream *xdr, 2810 const void *data) 2811{ 2812 const struct nfs4_server_caps_arg *args = data; 2813 const u32 *bitmask = args->bitmask; 2814 struct compound_hdr hdr = { 2815 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2816 }; 2817 2818 encode_compound_hdr(xdr, req, &hdr); 2819 encode_sequence(xdr, &args->seq_args, &hdr); 2820 encode_putfh(xdr, args->fhandle, &hdr); 2821 encode_getattr(xdr, bitmask, NULL, 3, &hdr); 2822 encode_nops(&hdr); 2823} 2824 2825/* 2826 * a RENEW request 2827 */ 2828static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2829 const void *data) 2830 2831{ 2832 const struct nfs_client *clp = data; 2833 struct compound_hdr hdr = { 2834 .nops = 0, 2835 }; 2836 2837 encode_compound_hdr(xdr, req, &hdr); 2838 encode_renew(xdr, clp->cl_clientid, &hdr); 2839 encode_nops(&hdr); 2840} 2841 2842/* 2843 * a SETCLIENTID request 2844 */ 2845static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2846 struct xdr_stream *xdr, 2847 const void *data) 2848{ 2849 const struct nfs4_setclientid *sc = data; 2850 struct compound_hdr hdr = { 2851 .nops = 0, 2852 }; 2853 2854 encode_compound_hdr(xdr, req, &hdr); 2855 encode_setclientid(xdr, sc, &hdr); 2856 encode_nops(&hdr); 2857} 2858 2859/* 2860 * a SETCLIENTID_CONFIRM request 2861 */ 2862static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2863 struct xdr_stream *xdr, 2864 const void *data) 2865{ 2866 const struct nfs4_setclientid_res *arg = data; 2867 struct compound_hdr hdr = { 2868 .nops = 0, 2869 }; 2870 2871 encode_compound_hdr(xdr, req, &hdr); 2872 encode_setclientid_confirm(xdr, arg, &hdr); 2873 encode_nops(&hdr); 2874} 2875 2876/* 2877 * DELEGRETURN request 2878 */ 2879static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2880 struct xdr_stream *xdr, 2881 const void *data) 2882{ 2883 const struct nfs4_delegreturnargs *args = data; 2884 struct compound_hdr hdr = { 2885 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2886 }; 2887 2888 encode_compound_hdr(xdr, req, &hdr); 2889 encode_sequence(xdr, &args->seq_args, &hdr); 2890 encode_putfh(xdr, args->fhandle, &hdr); 2891 if (args->lr_args) 2892 encode_layoutreturn(xdr, args->lr_args, &hdr); 2893 if (args->sattr_args) 2894 encode_delegattr(xdr, args->stateid, args->sattr_args, &hdr); 2895 if (args->bitmask) 2896 encode_getfattr(xdr, args->bitmask, &hdr); 2897 encode_delegreturn(xdr, args->stateid, &hdr); 2898 encode_nops(&hdr); 2899} 2900 2901/* 2902 * Encode FS_LOCATIONS request 2903 */ 2904static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2905 struct xdr_stream *xdr, 2906 const void *data) 2907{ 2908 const struct nfs4_fs_locations_arg *args = data; 2909 struct compound_hdr hdr = { 2910 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2911 }; 2912 uint32_t replen; 2913 2914 encode_compound_hdr(xdr, req, &hdr); 2915 encode_sequence(xdr, &args->seq_args, &hdr); 2916 if (args->migration) { 2917 encode_putfh(xdr, args->fh, &hdr); 2918 replen = hdr.replen; 2919 encode_fs_locations(xdr, args->bitmask, &hdr); 2920 if (args->renew) 2921 encode_renew(xdr, args->clientid, &hdr); 2922 } else { 2923 encode_putfh(xdr, args->dir_fh, &hdr); 2924 encode_lookup(xdr, args->name, &hdr); 2925 replen = hdr.replen; 2926 encode_fs_locations(xdr, args->bitmask, &hdr); 2927 } 2928 2929 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0, 2930 PAGE_SIZE, replen); 2931 encode_nops(&hdr); 2932} 2933 2934/* 2935 * Encode SECINFO request 2936 */ 2937static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2938 struct xdr_stream *xdr, 2939 const void *data) 2940{ 2941 const struct nfs4_secinfo_arg *args = data; 2942 struct compound_hdr hdr = { 2943 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2944 }; 2945 2946 encode_compound_hdr(xdr, req, &hdr); 2947 encode_sequence(xdr, &args->seq_args, &hdr); 2948 encode_putfh(xdr, args->dir_fh, &hdr); 2949 encode_secinfo(xdr, args->name, &hdr); 2950 encode_nops(&hdr); 2951} 2952 2953/* 2954 * Encode FSID_PRESENT request 2955 */ 2956static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req, 2957 struct xdr_stream *xdr, 2958 const void *data) 2959{ 2960 const struct nfs4_fsid_present_arg *args = data; 2961 struct compound_hdr hdr = { 2962 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2963 }; 2964 2965 encode_compound_hdr(xdr, req, &hdr); 2966 encode_sequence(xdr, &args->seq_args, &hdr); 2967 encode_putfh(xdr, args->fh, &hdr); 2968 encode_getfh(xdr, &hdr); 2969 if (args->renew) 2970 encode_renew(xdr, args->clientid, &hdr); 2971 encode_nops(&hdr); 2972} 2973 2974#if defined(CONFIG_NFS_V4_1) 2975/* 2976 * BIND_CONN_TO_SESSION request 2977 */ 2978static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req, 2979 struct xdr_stream *xdr, 2980 const void *data) 2981{ 2982 const struct nfs41_bind_conn_to_session_args *args = data; 2983 struct compound_hdr hdr = { 2984 .minorversion = args->client->cl_mvops->minor_version, 2985 }; 2986 2987 encode_compound_hdr(xdr, req, &hdr); 2988 encode_bind_conn_to_session(xdr, args, &hdr); 2989 encode_nops(&hdr); 2990} 2991 2992/* 2993 * EXCHANGE_ID request 2994 */ 2995static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2996 struct xdr_stream *xdr, 2997 const void *data) 2998{ 2999 const struct nfs41_exchange_id_args *args = data; 3000 struct compound_hdr hdr = { 3001 .minorversion = args->client->cl_mvops->minor_version, 3002 }; 3003 3004 encode_compound_hdr(xdr, req, &hdr); 3005 encode_exchange_id(xdr, args, &hdr); 3006 encode_nops(&hdr); 3007} 3008 3009/* 3010 * a CREATE_SESSION request 3011 */ 3012static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 3013 struct xdr_stream *xdr, 3014 const void *data) 3015{ 3016 const struct nfs41_create_session_args *args = data; 3017 struct compound_hdr hdr = { 3018 .minorversion = args->client->cl_mvops->minor_version, 3019 }; 3020 3021 encode_compound_hdr(xdr, req, &hdr); 3022 encode_create_session(xdr, args, &hdr); 3023 encode_nops(&hdr); 3024} 3025 3026/* 3027 * a DESTROY_SESSION request 3028 */ 3029static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 3030 struct xdr_stream *xdr, 3031 const void *data) 3032{ 3033 const struct nfs4_session *session = data; 3034 struct compound_hdr hdr = { 3035 .minorversion = session->clp->cl_mvops->minor_version, 3036 }; 3037 3038 encode_compound_hdr(xdr, req, &hdr); 3039 encode_destroy_session(xdr, session, &hdr); 3040 encode_nops(&hdr); 3041} 3042 3043/* 3044 * a DESTROY_CLIENTID request 3045 */ 3046static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req, 3047 struct xdr_stream *xdr, 3048 const void *data) 3049{ 3050 const struct nfs_client *clp = data; 3051 struct compound_hdr hdr = { 3052 .minorversion = clp->cl_mvops->minor_version, 3053 }; 3054 3055 encode_compound_hdr(xdr, req, &hdr); 3056 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr); 3057 encode_nops(&hdr); 3058} 3059 3060/* 3061 * a SEQUENCE request 3062 */ 3063static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 3064 const void *data) 3065{ 3066 const struct nfs4_sequence_args *args = data; 3067 struct compound_hdr hdr = { 3068 .minorversion = nfs4_xdr_minorversion(args), 3069 }; 3070 3071 encode_compound_hdr(xdr, req, &hdr); 3072 encode_sequence(xdr, args, &hdr); 3073 encode_nops(&hdr); 3074} 3075 3076#endif 3077 3078/* 3079 * a GET_LEASE_TIME request 3080 */ 3081static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 3082 struct xdr_stream *xdr, 3083 const void *data) 3084{ 3085 const struct nfs4_get_lease_time_args *args = data; 3086 struct compound_hdr hdr = { 3087 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 3088 }; 3089 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 3090 3091 encode_compound_hdr(xdr, req, &hdr); 3092 encode_sequence(xdr, &args->la_seq_args, &hdr); 3093 encode_putrootfh(xdr, &hdr); 3094 encode_fsinfo(xdr, lease_bitmap, &hdr); 3095 encode_nops(&hdr); 3096} 3097 3098#ifdef CONFIG_NFS_V4_1 3099 3100/* 3101 * a RECLAIM_COMPLETE request 3102 */ 3103static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 3104 struct xdr_stream *xdr, 3105 const void *data) 3106{ 3107 const struct nfs41_reclaim_complete_args *args = data; 3108 struct compound_hdr hdr = { 3109 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 3110 }; 3111 3112 encode_compound_hdr(xdr, req, &hdr); 3113 encode_sequence(xdr, &args->seq_args, &hdr); 3114 encode_reclaim_complete(xdr, args, &hdr); 3115 encode_nops(&hdr); 3116} 3117 3118/* 3119 * Encode GETDEVICEINFO request 3120 */ 3121static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 3122 struct xdr_stream *xdr, 3123 const void *data) 3124{ 3125 const struct nfs4_getdeviceinfo_args *args = data; 3126 struct compound_hdr hdr = { 3127 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3128 }; 3129 uint32_t replen; 3130 3131 encode_compound_hdr(xdr, req, &hdr); 3132 encode_sequence(xdr, &args->seq_args, &hdr); 3133 3134 replen = hdr.replen + op_decode_hdr_maxsz + 2; 3135 3136 encode_getdeviceinfo(xdr, args, &hdr); 3137 3138 /* set up reply kvec. device_addr4 opaque data is read into the 3139 * pages */ 3140 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase, 3141 args->pdev->pglen, replen); 3142 encode_nops(&hdr); 3143} 3144 3145/* 3146 * Encode LAYOUTGET request 3147 */ 3148static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 3149 struct xdr_stream *xdr, 3150 const void *data) 3151{ 3152 const struct nfs4_layoutget_args *args = data; 3153 struct compound_hdr hdr = { 3154 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3155 }; 3156 3157 encode_compound_hdr(xdr, req, &hdr); 3158 encode_sequence(xdr, &args->seq_args, &hdr); 3159 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3160 encode_layoutget(xdr, args, &hdr); 3161 3162 rpc_prepare_reply_pages(req, args->layout.pages, 0, 3163 args->layout.pglen, hdr.replen - pagepad_maxsz); 3164 encode_nops(&hdr); 3165} 3166 3167/* 3168 * Encode LAYOUTCOMMIT request 3169 */ 3170static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 3171 struct xdr_stream *xdr, 3172 const void *priv) 3173{ 3174 const struct nfs4_layoutcommit_args *args = priv; 3175 struct nfs4_layoutcommit_data *data = 3176 container_of(args, struct nfs4_layoutcommit_data, args); 3177 struct compound_hdr hdr = { 3178 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3179 }; 3180 3181 encode_compound_hdr(xdr, req, &hdr); 3182 encode_sequence(xdr, &args->seq_args, &hdr); 3183 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3184 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 3185 encode_getfattr(xdr, args->bitmask, &hdr); 3186 encode_nops(&hdr); 3187} 3188 3189/* 3190 * Encode LAYOUTRETURN request 3191 */ 3192static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 3193 struct xdr_stream *xdr, 3194 const void *data) 3195{ 3196 const struct nfs4_layoutreturn_args *args = data; 3197 struct compound_hdr hdr = { 3198 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3199 }; 3200 3201 encode_compound_hdr(xdr, req, &hdr); 3202 encode_sequence(xdr, &args->seq_args, &hdr); 3203 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3204 encode_layoutreturn(xdr, args, &hdr); 3205 encode_nops(&hdr); 3206} 3207 3208/* 3209 * Encode SECINFO_NO_NAME request 3210 */ 3211static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 3212 struct xdr_stream *xdr, 3213 const void *data) 3214{ 3215 const struct nfs41_secinfo_no_name_args *args = data; 3216 struct compound_hdr hdr = { 3217 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3218 }; 3219 3220 encode_compound_hdr(xdr, req, &hdr); 3221 encode_sequence(xdr, &args->seq_args, &hdr); 3222 encode_putrootfh(xdr, &hdr); 3223 encode_secinfo_no_name(xdr, args, &hdr); 3224 encode_nops(&hdr); 3225} 3226 3227/* 3228 * Encode TEST_STATEID request 3229 */ 3230static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 3231 struct xdr_stream *xdr, 3232 const void *data) 3233{ 3234 const struct nfs41_test_stateid_args *args = data; 3235 struct compound_hdr hdr = { 3236 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3237 }; 3238 3239 encode_compound_hdr(xdr, req, &hdr); 3240 encode_sequence(xdr, &args->seq_args, &hdr); 3241 encode_test_stateid(xdr, args, &hdr); 3242 encode_nops(&hdr); 3243} 3244 3245/* 3246 * Encode FREE_STATEID request 3247 */ 3248static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 3249 struct xdr_stream *xdr, 3250 const void *data) 3251{ 3252 const struct nfs41_free_stateid_args *args = data; 3253 struct compound_hdr hdr = { 3254 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3255 }; 3256 3257 encode_compound_hdr(xdr, req, &hdr); 3258 encode_sequence(xdr, &args->seq_args, &hdr); 3259 encode_free_stateid(xdr, args, &hdr); 3260 encode_nops(&hdr); 3261} 3262#endif /* CONFIG_NFS_V4_1 */ 3263 3264static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3265{ 3266 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string, 3267 NFS4_OPAQUE_LIMIT); 3268 if (unlikely(ret < 0)) 3269 return -EIO; 3270 *len = ret; 3271 return 0; 3272} 3273 3274static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3275{ 3276 ssize_t ret; 3277 void *ptr; 3278 u32 tmp; 3279 3280 if (xdr_stream_decode_u32(xdr, &tmp) < 0) 3281 return -EIO; 3282 hdr->status = tmp; 3283 3284 ret = xdr_stream_decode_opaque_inline(xdr, &ptr, NFS4_OPAQUE_LIMIT); 3285 if (ret < 0) 3286 return -EIO; 3287 hdr->taglen = ret; 3288 hdr->tag = ptr; 3289 3290 if (xdr_stream_decode_u32(xdr, &tmp) < 0) 3291 return -EIO; 3292 hdr->nops = tmp; 3293 if (unlikely(hdr->nops < 1)) 3294 return nfs4_stat_to_errno(hdr->status); 3295 return 0; 3296} 3297 3298static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, 3299 int *nfs_retval) 3300{ 3301 __be32 *p; 3302 uint32_t opnum; 3303 int32_t nfserr; 3304 3305 p = xdr_inline_decode(xdr, 8); 3306 if (unlikely(!p)) 3307 goto out_overflow; 3308 opnum = be32_to_cpup(p++); 3309 if (unlikely(opnum != expected)) 3310 goto out_bad_operation; 3311 if (unlikely(*p != cpu_to_be32(NFS_OK))) 3312 goto out_status; 3313 *nfs_retval = 0; 3314 return true; 3315out_status: 3316 nfserr = be32_to_cpup(p); 3317 trace_nfs4_xdr_status(xdr, opnum, nfserr); 3318 *nfs_retval = nfs4_stat_to_errno(nfserr); 3319 return true; 3320out_bad_operation: 3321 trace_nfs4_xdr_bad_operation(xdr, opnum, expected); 3322 *nfs_retval = -EREMOTEIO; 3323 return false; 3324out_overflow: 3325 *nfs_retval = -EIO; 3326 return false; 3327} 3328 3329static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3330{ 3331 int retval; 3332 3333 __decode_op_hdr(xdr, expected, &retval); 3334 return retval; 3335} 3336 3337/* Dummy routine */ 3338static int decode_ace(struct xdr_stream *xdr, void *ace) 3339{ 3340 __be32 *p; 3341 unsigned int strlen; 3342 char *str; 3343 3344 p = xdr_inline_decode(xdr, 12); 3345 if (unlikely(!p)) 3346 return -EIO; 3347 return decode_opaque_inline(xdr, &strlen, &str); 3348} 3349 3350static ssize_t 3351decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz) 3352{ 3353 ssize_t ret; 3354 3355 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz); 3356 if (likely(ret >= 0)) 3357 return ret; 3358 if (ret != -EMSGSIZE) 3359 return -EIO; 3360 return sz; 3361} 3362 3363static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3364{ 3365 ssize_t ret; 3366 ret = decode_bitmap4(xdr, bitmap, 3); 3367 return ret < 0 ? ret : 0; 3368} 3369 3370static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3371{ 3372 __be32 *p; 3373 3374 p = xdr_inline_decode(xdr, 4); 3375 if (unlikely(!p)) 3376 return -EIO; 3377 *attrlen = be32_to_cpup(p); 3378 *savep = xdr_stream_pos(xdr); 3379 return 0; 3380} 3381 3382static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3383{ 3384 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3385 int ret; 3386 ret = decode_attr_bitmap(xdr, bitmask); 3387 if (unlikely(ret < 0)) 3388 return ret; 3389 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3390 } else 3391 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3392 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3393 bitmask[0], bitmask[1], bitmask[2]); 3394 return 0; 3395} 3396 3397static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3398{ 3399 __be32 *p; 3400 int ret = 0; 3401 3402 *type = 0; 3403 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3404 return -EIO; 3405 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3406 p = xdr_inline_decode(xdr, 4); 3407 if (unlikely(!p)) 3408 return -EIO; 3409 *type = be32_to_cpup(p); 3410 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3411 dprintk("%s: bad type %d\n", __func__, *type); 3412 return -EIO; 3413 } 3414 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3415 ret = NFS_ATTR_FATTR_TYPE; 3416 } 3417 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3418 return ret; 3419} 3420 3421static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3422 uint32_t *bitmap, uint32_t *type) 3423{ 3424 __be32 *p; 3425 3426 *type = 0; 3427 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3428 return -EIO; 3429 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3430 p = xdr_inline_decode(xdr, 4); 3431 if (unlikely(!p)) 3432 return -EIO; 3433 *type = be32_to_cpup(p); 3434 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3435 } 3436 dprintk("%s: expire type=0x%x\n", __func__, *type); 3437 return 0; 3438} 3439 3440static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3441{ 3442 __be32 *p; 3443 int ret = 0; 3444 3445 *change = 0; 3446 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3447 return -EIO; 3448 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3449 p = xdr_inline_decode(xdr, 8); 3450 if (unlikely(!p)) 3451 return -EIO; 3452 xdr_decode_hyper(p, change); 3453 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3454 ret = NFS_ATTR_FATTR_CHANGE; 3455 } 3456 dprintk("%s: change attribute=%Lu\n", __func__, 3457 (unsigned long long)*change); 3458 return ret; 3459} 3460 3461static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3462{ 3463 __be32 *p; 3464 int ret = 0; 3465 3466 *size = 0; 3467 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3468 return -EIO; 3469 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3470 p = xdr_inline_decode(xdr, 8); 3471 if (unlikely(!p)) 3472 return -EIO; 3473 xdr_decode_hyper(p, size); 3474 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3475 ret = NFS_ATTR_FATTR_SIZE; 3476 } 3477 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3478 return ret; 3479} 3480 3481static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3482{ 3483 __be32 *p; 3484 3485 *res = 0; 3486 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3487 return -EIO; 3488 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3489 p = xdr_inline_decode(xdr, 4); 3490 if (unlikely(!p)) 3491 return -EIO; 3492 *res = be32_to_cpup(p); 3493 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3494 } 3495 dprintk("%s: link support=%s\n", __func__, str_false_true(*res == 0)); 3496 return 0; 3497} 3498 3499static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3500{ 3501 __be32 *p; 3502 3503 *res = 0; 3504 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3505 return -EIO; 3506 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3507 p = xdr_inline_decode(xdr, 4); 3508 if (unlikely(!p)) 3509 return -EIO; 3510 *res = be32_to_cpup(p); 3511 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3512 } 3513 dprintk("%s: symlink support=%s\n", __func__, str_false_true(*res == 0)); 3514 return 0; 3515} 3516 3517static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3518{ 3519 __be32 *p; 3520 int ret = 0; 3521 3522 fsid->major = 0; 3523 fsid->minor = 0; 3524 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3525 return -EIO; 3526 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3527 p = xdr_inline_decode(xdr, 16); 3528 if (unlikely(!p)) 3529 return -EIO; 3530 p = xdr_decode_hyper(p, &fsid->major); 3531 xdr_decode_hyper(p, &fsid->minor); 3532 bitmap[0] &= ~FATTR4_WORD0_FSID; 3533 ret = NFS_ATTR_FATTR_FSID; 3534 } 3535 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3536 (unsigned long long)fsid->major, 3537 (unsigned long long)fsid->minor); 3538 return ret; 3539} 3540 3541static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3542{ 3543 __be32 *p; 3544 3545 *res = 60; 3546 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3547 return -EIO; 3548 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3549 p = xdr_inline_decode(xdr, 4); 3550 if (unlikely(!p)) 3551 return -EIO; 3552 *res = be32_to_cpup(p); 3553 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3554 } 3555 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res); 3556 return 0; 3557} 3558 3559static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3560{ 3561 __be32 *p; 3562 3563 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3564 return -EIO; 3565 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3566 p = xdr_inline_decode(xdr, 4); 3567 if (unlikely(!p)) 3568 return -EIO; 3569 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3570 *res = -be32_to_cpup(p); 3571 } 3572 return 0; 3573} 3574 3575static int decode_attr_exclcreat_supported(struct xdr_stream *xdr, 3576 uint32_t *bitmap, uint32_t *bitmask) 3577{ 3578 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) { 3579 int ret; 3580 ret = decode_attr_bitmap(xdr, bitmask); 3581 if (unlikely(ret < 0)) 3582 return ret; 3583 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT; 3584 } else 3585 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3586 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3587 bitmask[0], bitmask[1], bitmask[2]); 3588 return 0; 3589} 3590 3591static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3592{ 3593 __be32 *p; 3594 u32 len; 3595 3596 if (fh != NULL) 3597 memset(fh, 0, sizeof(*fh)); 3598 3599 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3600 return -EIO; 3601 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3602 p = xdr_inline_decode(xdr, 4); 3603 if (unlikely(!p)) 3604 return -EIO; 3605 len = be32_to_cpup(p); 3606 if (len > NFS4_FHSIZE || len == 0) { 3607 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR, 3608 NFS4ERR_BADHANDLE); 3609 return -EREMOTEIO; 3610 } 3611 p = xdr_inline_decode(xdr, len); 3612 if (unlikely(!p)) 3613 return -EIO; 3614 if (fh != NULL) { 3615 memcpy(fh->data, p, len); 3616 fh->size = len; 3617 } 3618 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3619 } 3620 return 0; 3621} 3622 3623static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3624{ 3625 __be32 *p; 3626 3627 *res = 0; 3628 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3629 return -EIO; 3630 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3631 p = xdr_inline_decode(xdr, 4); 3632 if (unlikely(!p)) 3633 return -EIO; 3634 *res = be32_to_cpup(p); 3635 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3636 } 3637 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3638 return 0; 3639} 3640 3641static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3642{ 3643 __be32 *p; 3644 3645 *res = 0; 3646 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_INSENSITIVE - 1U))) 3647 return -EIO; 3648 if (likely(bitmap[0] & FATTR4_WORD0_CASE_INSENSITIVE)) { 3649 p = xdr_inline_decode(xdr, 4); 3650 if (unlikely(!p)) 3651 return -EIO; 3652 *res = be32_to_cpup(p); 3653 bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE; 3654 } 3655 dprintk("%s: case_insensitive=%s\n", __func__, str_false_true(*res == 0)); 3656 return 0; 3657} 3658 3659static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3660{ 3661 __be32 *p; 3662 3663 *res = 0; 3664 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_PRESERVING - 1U))) 3665 return -EIO; 3666 if (likely(bitmap[0] & FATTR4_WORD0_CASE_PRESERVING)) { 3667 p = xdr_inline_decode(xdr, 4); 3668 if (unlikely(!p)) 3669 return -EIO; 3670 *res = be32_to_cpup(p); 3671 bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING; 3672 } 3673 dprintk("%s: case_preserving=%s\n", __func__, str_false_true(*res == 0)); 3674 return 0; 3675} 3676 3677static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3678{ 3679 __be32 *p; 3680 int ret = 0; 3681 3682 *fileid = 0; 3683 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3684 return -EIO; 3685 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3686 p = xdr_inline_decode(xdr, 8); 3687 if (unlikely(!p)) 3688 return -EIO; 3689 xdr_decode_hyper(p, fileid); 3690 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3691 ret = NFS_ATTR_FATTR_FILEID; 3692 } 3693 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3694 return ret; 3695} 3696 3697static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3698{ 3699 __be32 *p; 3700 int ret = 0; 3701 3702 *fileid = 0; 3703 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3704 return -EIO; 3705 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3706 p = xdr_inline_decode(xdr, 8); 3707 if (unlikely(!p)) 3708 return -EIO; 3709 xdr_decode_hyper(p, fileid); 3710 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3711 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3712 } 3713 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3714 return ret; 3715} 3716 3717static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3718{ 3719 __be32 *p; 3720 int status = 0; 3721 3722 *res = 0; 3723 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3724 return -EIO; 3725 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3726 p = xdr_inline_decode(xdr, 8); 3727 if (unlikely(!p)) 3728 return -EIO; 3729 xdr_decode_hyper(p, res); 3730 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3731 } 3732 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3733 return status; 3734} 3735 3736static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3737{ 3738 __be32 *p; 3739 int status = 0; 3740 3741 *res = 0; 3742 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3743 return -EIO; 3744 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3745 p = xdr_inline_decode(xdr, 8); 3746 if (unlikely(!p)) 3747 return -EIO; 3748 xdr_decode_hyper(p, res); 3749 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3750 } 3751 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3752 return status; 3753} 3754 3755static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3756{ 3757 __be32 *p; 3758 int status = 0; 3759 3760 *res = 0; 3761 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3762 return -EIO; 3763 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3764 p = xdr_inline_decode(xdr, 8); 3765 if (unlikely(!p)) 3766 return -EIO; 3767 xdr_decode_hyper(p, res); 3768 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3769 } 3770 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3771 return status; 3772} 3773 3774static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3775{ 3776 u32 n; 3777 __be32 *p; 3778 int status = 0; 3779 3780 p = xdr_inline_decode(xdr, 4); 3781 if (unlikely(!p)) 3782 return -EIO; 3783 n = be32_to_cpup(p); 3784 if (n == 0) 3785 goto root_path; 3786 dprintk("pathname4: "); 3787 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3788 dprintk("cannot parse %d components in path\n", n); 3789 goto out_eio; 3790 } 3791 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3792 struct nfs4_string *component = &path->components[path->ncomponents]; 3793 status = decode_opaque_inline(xdr, &component->len, &component->data); 3794 if (unlikely(status != 0)) 3795 goto out_eio; 3796 ifdebug (XDR) 3797 pr_cont("%s%.*s ", 3798 (path->ncomponents != n ? "/ " : ""), 3799 component->len, component->data); 3800 } 3801out: 3802 return status; 3803root_path: 3804/* a root pathname is sent as a zero component4 */ 3805 path->ncomponents = 1; 3806 path->components[0].len=0; 3807 path->components[0].data=NULL; 3808 dprintk("pathname4: /\n"); 3809 goto out; 3810out_eio: 3811 dprintk(" status %d", status); 3812 status = -EIO; 3813 goto out; 3814} 3815 3816static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3817{ 3818 int n; 3819 __be32 *p; 3820 int status = -EIO; 3821 3822 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3823 goto out; 3824 status = 0; 3825 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3826 goto out; 3827 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS; 3828 status = -EIO; 3829 /* Ignore borken servers that return unrequested attrs */ 3830 if (unlikely(res == NULL)) 3831 goto out; 3832 dprintk("%s: fsroot:\n", __func__); 3833 status = decode_pathname(xdr, &res->fs_path); 3834 if (unlikely(status != 0)) 3835 goto out; 3836 p = xdr_inline_decode(xdr, 4); 3837 if (unlikely(!p)) 3838 goto out_eio; 3839 n = be32_to_cpup(p); 3840 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3841 u32 m; 3842 struct nfs4_fs_location *loc; 3843 3844 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3845 break; 3846 loc = &res->locations[res->nlocations]; 3847 p = xdr_inline_decode(xdr, 4); 3848 if (unlikely(!p)) 3849 goto out_eio; 3850 m = be32_to_cpup(p); 3851 3852 dprintk("%s: servers:\n", __func__); 3853 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3854 struct nfs4_string *server; 3855 3856 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3857 unsigned int i; 3858 dprintk("%s: using first %u of %u servers " 3859 "returned for location %u\n", 3860 __func__, 3861 NFS4_FS_LOCATION_MAXSERVERS, 3862 m, res->nlocations); 3863 for (i = loc->nservers; i < m; i++) { 3864 unsigned int len; 3865 char *data; 3866 status = decode_opaque_inline(xdr, &len, &data); 3867 if (unlikely(status != 0)) 3868 goto out_eio; 3869 } 3870 break; 3871 } 3872 server = &loc->servers[loc->nservers]; 3873 status = decode_opaque_inline(xdr, &server->len, &server->data); 3874 if (unlikely(status != 0)) 3875 goto out_eio; 3876 dprintk("%s ", server->data); 3877 } 3878 status = decode_pathname(xdr, &loc->rootpath); 3879 if (unlikely(status != 0)) 3880 goto out_eio; 3881 } 3882 if (res->nlocations != 0) 3883 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3884out: 3885 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3886 return status; 3887out_eio: 3888 status = -EIO; 3889 goto out; 3890} 3891 3892static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3893{ 3894 __be32 *p; 3895 int status = 0; 3896 3897 *res = 0; 3898 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3899 return -EIO; 3900 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3901 p = xdr_inline_decode(xdr, 8); 3902 if (unlikely(!p)) 3903 return -EIO; 3904 xdr_decode_hyper(p, res); 3905 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3906 } 3907 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3908 return status; 3909} 3910 3911static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3912{ 3913 __be32 *p; 3914 int status = 0; 3915 3916 *maxlink = 1; 3917 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3918 return -EIO; 3919 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3920 p = xdr_inline_decode(xdr, 4); 3921 if (unlikely(!p)) 3922 return -EIO; 3923 *maxlink = be32_to_cpup(p); 3924 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3925 } 3926 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3927 return status; 3928} 3929 3930static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3931{ 3932 __be32 *p; 3933 int status = 0; 3934 3935 *maxname = 1024; 3936 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3937 return -EIO; 3938 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3939 p = xdr_inline_decode(xdr, 4); 3940 if (unlikely(!p)) 3941 return -EIO; 3942 *maxname = be32_to_cpup(p); 3943 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3944 } 3945 dprintk("%s: maxname=%u\n", __func__, *maxname); 3946 return status; 3947} 3948 3949static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3950{ 3951 __be32 *p; 3952 int status = 0; 3953 3954 *res = 1024; 3955 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3956 return -EIO; 3957 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3958 uint64_t maxread; 3959 p = xdr_inline_decode(xdr, 8); 3960 if (unlikely(!p)) 3961 return -EIO; 3962 xdr_decode_hyper(p, &maxread); 3963 if (maxread > 0x7FFFFFFF) 3964 maxread = 0x7FFFFFFF; 3965 *res = (uint32_t)maxread; 3966 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3967 } 3968 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3969 return status; 3970} 3971 3972static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3973{ 3974 __be32 *p; 3975 int status = 0; 3976 3977 *res = 1024; 3978 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3979 return -EIO; 3980 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3981 uint64_t maxwrite; 3982 p = xdr_inline_decode(xdr, 8); 3983 if (unlikely(!p)) 3984 return -EIO; 3985 xdr_decode_hyper(p, &maxwrite); 3986 if (maxwrite > 0x7FFFFFFF) 3987 maxwrite = 0x7FFFFFFF; 3988 *res = (uint32_t)maxwrite; 3989 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3990 } 3991 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3992 return status; 3993} 3994 3995static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3996{ 3997 uint32_t tmp; 3998 __be32 *p; 3999 int ret = 0; 4000 4001 *mode = 0; 4002 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 4003 return -EIO; 4004 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 4005 p = xdr_inline_decode(xdr, 4); 4006 if (unlikely(!p)) 4007 return -EIO; 4008 tmp = be32_to_cpup(p); 4009 *mode = tmp & ~S_IFMT; 4010 bitmap[1] &= ~FATTR4_WORD1_MODE; 4011 ret = NFS_ATTR_FATTR_MODE; 4012 } 4013 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 4014 return ret; 4015} 4016 4017static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 4018{ 4019 __be32 *p; 4020 int ret = 0; 4021 4022 *nlink = 1; 4023 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 4024 return -EIO; 4025 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 4026 p = xdr_inline_decode(xdr, 4); 4027 if (unlikely(!p)) 4028 return -EIO; 4029 *nlink = be32_to_cpup(p); 4030 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 4031 ret = NFS_ATTR_FATTR_NLINK; 4032 } 4033 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 4034 return ret; 4035} 4036 4037static ssize_t decode_nfs4_string(struct xdr_stream *xdr, 4038 struct nfs4_string *name, gfp_t gfp_flags) 4039{ 4040 ssize_t ret; 4041 4042 ret = xdr_stream_decode_string_dup(xdr, &name->data, 4043 XDR_MAX_NETOBJ, gfp_flags); 4044 name->len = 0; 4045 if (ret > 0) 4046 name->len = ret; 4047 return ret; 4048} 4049 4050static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 4051 const struct nfs_server *server, kuid_t *uid, 4052 struct nfs4_string *owner_name) 4053{ 4054 ssize_t len; 4055 char *p; 4056 4057 *uid = make_kuid(&init_user_ns, -2); 4058 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 4059 return -EIO; 4060 if (!(bitmap[1] & FATTR4_WORD1_OWNER)) 4061 return 0; 4062 bitmap[1] &= ~FATTR4_WORD1_OWNER; 4063 4064 if (owner_name != NULL) { 4065 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO); 4066 if (len <= 0) 4067 goto out; 4068 dprintk("%s: name=%s\n", __func__, owner_name->data); 4069 return NFS_ATTR_FATTR_OWNER_NAME; 4070 } else { 4071 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 4072 XDR_MAX_NETOBJ); 4073 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0) 4074 goto out; 4075 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 4076 return NFS_ATTR_FATTR_OWNER; 4077 } 4078out: 4079 if (len == -EBADMSG) 4080 return -EIO; 4081 return 0; 4082} 4083 4084static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 4085 const struct nfs_server *server, kgid_t *gid, 4086 struct nfs4_string *group_name) 4087{ 4088 ssize_t len; 4089 char *p; 4090 4091 *gid = make_kgid(&init_user_ns, -2); 4092 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 4093 return -EIO; 4094 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) 4095 return 0; 4096 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 4097 4098 if (group_name != NULL) { 4099 len = decode_nfs4_string(xdr, group_name, GFP_NOIO); 4100 if (len <= 0) 4101 goto out; 4102 dprintk("%s: name=%s\n", __func__, group_name->data); 4103 return NFS_ATTR_FATTR_GROUP_NAME; 4104 } else { 4105 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 4106 XDR_MAX_NETOBJ); 4107 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0) 4108 goto out; 4109 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 4110 return NFS_ATTR_FATTR_GROUP; 4111 } 4112out: 4113 if (len == -EBADMSG) 4114 return -EIO; 4115 return 0; 4116} 4117 4118static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 4119{ 4120 uint32_t major = 0, minor = 0; 4121 __be32 *p; 4122 int ret = 0; 4123 4124 *rdev = MKDEV(0,0); 4125 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 4126 return -EIO; 4127 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 4128 dev_t tmp; 4129 4130 p = xdr_inline_decode(xdr, 8); 4131 if (unlikely(!p)) 4132 return -EIO; 4133 major = be32_to_cpup(p++); 4134 minor = be32_to_cpup(p); 4135 tmp = MKDEV(major, minor); 4136 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 4137 *rdev = tmp; 4138 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 4139 ret = NFS_ATTR_FATTR_RDEV; 4140 } 4141 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 4142 return ret; 4143} 4144 4145static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4146{ 4147 __be32 *p; 4148 int status = 0; 4149 4150 *res = 0; 4151 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 4152 return -EIO; 4153 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 4154 p = xdr_inline_decode(xdr, 8); 4155 if (unlikely(!p)) 4156 return -EIO; 4157 xdr_decode_hyper(p, res); 4158 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 4159 } 4160 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 4161 return status; 4162} 4163 4164static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4165{ 4166 __be32 *p; 4167 int status = 0; 4168 4169 *res = 0; 4170 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 4171 return -EIO; 4172 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 4173 p = xdr_inline_decode(xdr, 8); 4174 if (unlikely(!p)) 4175 return -EIO; 4176 xdr_decode_hyper(p, res); 4177 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 4178 } 4179 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 4180 return status; 4181} 4182 4183static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4184{ 4185 __be32 *p; 4186 int status = 0; 4187 4188 *res = 0; 4189 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 4190 return -EIO; 4191 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 4192 p = xdr_inline_decode(xdr, 8); 4193 if (unlikely(!p)) 4194 return -EIO; 4195 xdr_decode_hyper(p, res); 4196 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 4197 } 4198 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 4199 return status; 4200} 4201 4202static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 4203{ 4204 __be32 *p; 4205 int ret = 0; 4206 4207 *used = 0; 4208 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4209 return -EIO; 4210 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4211 p = xdr_inline_decode(xdr, 8); 4212 if (unlikely(!p)) 4213 return -EIO; 4214 xdr_decode_hyper(p, used); 4215 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4216 ret = NFS_ATTR_FATTR_SPACE_USED; 4217 } 4218 dprintk("%s: space used=%Lu\n", __func__, 4219 (unsigned long long)*used); 4220 return ret; 4221} 4222 4223static __be32 * 4224xdr_decode_nfstime4(__be32 *p, struct timespec64 *t) 4225{ 4226 __u64 sec; 4227 4228 p = xdr_decode_hyper(p, &sec); 4229 t-> tv_sec = sec; 4230 t->tv_nsec = be32_to_cpup(p++); 4231 return p; 4232} 4233 4234static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time) 4235{ 4236 __be32 *p; 4237 4238 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2); 4239 if (unlikely(!p)) 4240 return -EIO; 4241 xdr_decode_nfstime4(p, time); 4242 return 0; 4243} 4244 4245static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4246{ 4247 int status = 0; 4248 4249 time->tv_sec = 0; 4250 time->tv_nsec = 0; 4251 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4252 return -EIO; 4253 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4254 status = decode_attr_time(xdr, time); 4255 if (status == 0) 4256 status = NFS_ATTR_FATTR_ATIME; 4257 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4258 } 4259 dprintk("%s: atime=%lld\n", __func__, time->tv_sec); 4260 return status; 4261} 4262 4263static int decode_attr_time_create(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4264{ 4265 int status = 0; 4266 4267 time->tv_sec = 0; 4268 time->tv_nsec = 0; 4269 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_CREATE - 1U))) 4270 return -EIO; 4271 if (likely(bitmap[1] & FATTR4_WORD1_TIME_CREATE)) { 4272 status = decode_attr_time(xdr, time); 4273 if (status == 0) 4274 status = NFS_ATTR_FATTR_BTIME; 4275 bitmap[1] &= ~FATTR4_WORD1_TIME_CREATE; 4276 } 4277 dprintk("%s: btime=%lld\n", __func__, time->tv_sec); 4278 return status; 4279} 4280 4281static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4282{ 4283 int status = 0; 4284 4285 time->tv_sec = 0; 4286 time->tv_nsec = 0; 4287 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4288 return -EIO; 4289 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4290 status = decode_attr_time(xdr, time); 4291 if (status == 0) 4292 status = NFS_ATTR_FATTR_CTIME; 4293 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4294 } 4295 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec); 4296 return status; 4297} 4298 4299static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4300 struct timespec64 *time) 4301{ 4302 int status = 0; 4303 4304 time->tv_sec = 0; 4305 time->tv_nsec = 0; 4306 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4307 return -EIO; 4308 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4309 status = decode_attr_time(xdr, time); 4310 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4311 } 4312 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec, 4313 time->tv_nsec); 4314 return status; 4315} 4316 4317static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4318 struct nfs4_label *label) 4319{ 4320 uint32_t pi = 0; 4321 uint32_t lfs = 0; 4322 __u32 len; 4323 __be32 *p; 4324 int status = 0; 4325 4326 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4327 return -EIO; 4328 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4329 p = xdr_inline_decode(xdr, 4); 4330 if (unlikely(!p)) 4331 return -EIO; 4332 lfs = be32_to_cpup(p++); 4333 p = xdr_inline_decode(xdr, 4); 4334 if (unlikely(!p)) 4335 return -EIO; 4336 pi = be32_to_cpup(p++); 4337 p = xdr_inline_decode(xdr, 4); 4338 if (unlikely(!p)) 4339 return -EIO; 4340 len = be32_to_cpup(p++); 4341 p = xdr_inline_decode(xdr, len); 4342 if (unlikely(!p)) 4343 return -EIO; 4344 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4345 if (len < NFS4_MAXLABELLEN) { 4346 if (label && label->len) { 4347 if (label->len < len) 4348 return -ERANGE; 4349 memcpy(label->label, p, len); 4350 label->len = len; 4351 label->pi = pi; 4352 label->lfs = lfs; 4353 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4354 } 4355 } else 4356 printk(KERN_WARNING "%s: label too long (%u)!\n", 4357 __func__, len); 4358 if (label && label->label) 4359 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n", 4360 __func__, label->len, (char *)label->label, 4361 label->len, label->pi, label->lfs); 4362 } 4363 return status; 4364} 4365 4366static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4367{ 4368 int status = 0; 4369 4370 time->tv_sec = 0; 4371 time->tv_nsec = 0; 4372 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4373 return -EIO; 4374 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4375 status = decode_attr_time(xdr, time); 4376 if (status == 0) 4377 status = NFS_ATTR_FATTR_MTIME; 4378 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4379 } 4380 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec); 4381 return status; 4382} 4383 4384static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap, 4385 uint32_t *res) 4386{ 4387 __be32 *p; 4388 4389 *res = 0; 4390 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U))) 4391 return -EIO; 4392 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) { 4393 p = xdr_inline_decode(xdr, 4); 4394 if (unlikely(!p)) 4395 return -EIO; 4396 *res = be32_to_cpup(p); 4397 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT; 4398 } 4399 dprintk("%s: XATTR support=%s\n", __func__, str_false_true(*res == 0)); 4400 return 0; 4401} 4402 4403static int decode_attr_open_arguments(struct xdr_stream *xdr, uint32_t *bitmap, 4404 struct nfs4_open_caps *res) 4405{ 4406 memset(res, 0, sizeof(*res)); 4407 if (unlikely(bitmap[2] & (FATTR4_WORD2_OPEN_ARGUMENTS - 1U))) 4408 return -EIO; 4409 if (likely(bitmap[2] & FATTR4_WORD2_OPEN_ARGUMENTS)) { 4410 if (decode_bitmap4(xdr, res->oa_share_access, ARRAY_SIZE(res->oa_share_access)) < 0) 4411 return -EIO; 4412 if (decode_bitmap4(xdr, res->oa_share_deny, ARRAY_SIZE(res->oa_share_deny)) < 0) 4413 return -EIO; 4414 if (decode_bitmap4(xdr, res->oa_share_access_want, ARRAY_SIZE(res->oa_share_access_want)) < 0) 4415 return -EIO; 4416 if (decode_bitmap4(xdr, res->oa_open_claim, ARRAY_SIZE(res->oa_open_claim)) < 0) 4417 return -EIO; 4418 if (decode_bitmap4(xdr, res->oa_createmode, ARRAY_SIZE(res->oa_createmode)) < 0) 4419 return -EIO; 4420 bitmap[2] &= ~FATTR4_WORD2_OPEN_ARGUMENTS; 4421 } 4422 return 0; 4423} 4424 4425static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4426{ 4427 unsigned int attrwords = XDR_QUADLEN(attrlen); 4428 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4429 4430 if (unlikely(attrwords != nwords)) { 4431 dprintk("%s: server returned incorrect attribute length: " 4432 "%u %c %u\n", 4433 __func__, 4434 attrwords << 2, 4435 (attrwords < nwords) ? '<' : '>', 4436 nwords << 2); 4437 return -EIO; 4438 } 4439 return 0; 4440} 4441 4442static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4443{ 4444 __be32 *p; 4445 4446 p = xdr_inline_decode(xdr, 20); 4447 if (unlikely(!p)) 4448 return -EIO; 4449 cinfo->atomic = be32_to_cpup(p++); 4450 p = xdr_decode_hyper(p, &cinfo->before); 4451 xdr_decode_hyper(p, &cinfo->after); 4452 return 0; 4453} 4454 4455static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4456{ 4457 __be32 *p; 4458 uint32_t supp, acc; 4459 int status; 4460 4461 status = decode_op_hdr(xdr, OP_ACCESS); 4462 if (status) 4463 return status; 4464 p = xdr_inline_decode(xdr, 8); 4465 if (unlikely(!p)) 4466 return -EIO; 4467 supp = be32_to_cpup(p++); 4468 acc = be32_to_cpup(p); 4469 *supported = supp; 4470 *access = acc; 4471 return 0; 4472} 4473 4474static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4475{ 4476 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4477} 4478 4479static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4480{ 4481 stateid->type = NFS4_OPEN_STATEID_TYPE; 4482 return decode_stateid(xdr, stateid); 4483} 4484 4485static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4486{ 4487 stateid->type = NFS4_LOCK_STATEID_TYPE; 4488 return decode_stateid(xdr, stateid); 4489} 4490 4491static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4492{ 4493 stateid->type = NFS4_DELEGATION_STATEID_TYPE; 4494 return decode_stateid(xdr, stateid); 4495} 4496 4497static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4498{ 4499 nfs4_stateid dummy; 4500 4501 nfs4_stateid_copy(stateid, &invalid_stateid); 4502 return decode_stateid(xdr, &dummy); 4503} 4504 4505static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4506{ 4507 int status; 4508 4509 status = decode_op_hdr(xdr, OP_CLOSE); 4510 if (status != -EIO) 4511 nfs_increment_open_seqid(status, res->seqid); 4512 if (!status) 4513 status = decode_invalid_stateid(xdr, &res->stateid); 4514 return status; 4515} 4516 4517static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4518{ 4519 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4520} 4521 4522static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4523{ 4524 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4525} 4526 4527static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4528{ 4529 struct nfs_writeverf *verf = res->verf; 4530 int status; 4531 4532 status = decode_op_hdr(xdr, OP_COMMIT); 4533 if (!status) 4534 status = decode_write_verifier(xdr, &verf->verifier); 4535 if (!status) 4536 verf->committed = NFS_FILE_SYNC; 4537 return status; 4538} 4539 4540static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4541{ 4542 __be32 *p; 4543 uint32_t bmlen; 4544 int status; 4545 4546 status = decode_op_hdr(xdr, OP_CREATE); 4547 if (status) 4548 return status; 4549 if ((status = decode_change_info(xdr, cinfo))) 4550 return status; 4551 p = xdr_inline_decode(xdr, 4); 4552 if (unlikely(!p)) 4553 return -EIO; 4554 bmlen = be32_to_cpup(p); 4555 p = xdr_inline_decode(xdr, bmlen << 2); 4556 if (likely(p)) 4557 return 0; 4558 return -EIO; 4559} 4560 4561static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4562{ 4563 unsigned int savep; 4564 uint32_t attrlen, bitmap[3] = {0}; 4565 int status; 4566 4567 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4568 goto xdr_error; 4569 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4570 goto xdr_error; 4571 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4572 goto xdr_error; 4573 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4574 goto xdr_error; 4575 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4576 &res->fh_expire_type)) != 0) 4577 goto xdr_error; 4578 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4579 goto xdr_error; 4580 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4581 goto xdr_error; 4582 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4583 goto xdr_error; 4584 if ((status = decode_attr_case_insensitive(xdr, bitmap, &res->case_insensitive)) != 0) 4585 goto xdr_error; 4586 if ((status = decode_attr_case_preserving(xdr, bitmap, &res->case_preserving)) != 0) 4587 goto xdr_error; 4588 if ((status = decode_attr_exclcreat_supported(xdr, bitmap, 4589 res->exclcreat_bitmask)) != 0) 4590 goto xdr_error; 4591 if ((status = decode_attr_open_arguments(xdr, bitmap, &res->open_caps)) != 0) 4592 goto xdr_error; 4593 status = verify_attr_len(xdr, savep, attrlen); 4594xdr_error: 4595 dprintk("%s: xdr returned %d!\n", __func__, -status); 4596 return status; 4597} 4598 4599static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4600{ 4601 unsigned int savep; 4602 uint32_t attrlen, bitmap[3] = {0}; 4603 int status; 4604 4605 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4606 goto xdr_error; 4607 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4608 goto xdr_error; 4609 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4610 goto xdr_error; 4611 4612 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4613 goto xdr_error; 4614 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4615 goto xdr_error; 4616 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4617 goto xdr_error; 4618 4619 status = -EIO; 4620 if (unlikely(bitmap[0])) 4621 goto xdr_error; 4622 4623 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4624 goto xdr_error; 4625 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4626 goto xdr_error; 4627 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4628 goto xdr_error; 4629 4630 status = verify_attr_len(xdr, savep, attrlen); 4631xdr_error: 4632 dprintk("%s: xdr returned %d!\n", __func__, -status); 4633 return status; 4634} 4635 4636static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4637{ 4638 unsigned int savep; 4639 uint32_t attrlen, bitmap[3] = {0}; 4640 int status; 4641 4642 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4643 goto xdr_error; 4644 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4645 goto xdr_error; 4646 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4647 goto xdr_error; 4648 4649 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4650 goto xdr_error; 4651 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4652 goto xdr_error; 4653 4654 status = verify_attr_len(xdr, savep, attrlen); 4655xdr_error: 4656 dprintk("%s: xdr returned %d!\n", __func__, -status); 4657 return status; 4658} 4659 4660static int decode_threshold_hint(struct xdr_stream *xdr, 4661 uint32_t *bitmap, 4662 uint64_t *res, 4663 uint32_t hint_bit) 4664{ 4665 __be32 *p; 4666 4667 *res = 0; 4668 if (likely(bitmap[0] & hint_bit)) { 4669 p = xdr_inline_decode(xdr, 8); 4670 if (unlikely(!p)) 4671 return -EIO; 4672 xdr_decode_hyper(p, res); 4673 } 4674 return 0; 4675} 4676 4677static int decode_first_threshold_item4(struct xdr_stream *xdr, 4678 struct nfs4_threshold *res) 4679{ 4680 __be32 *p; 4681 unsigned int savep; 4682 uint32_t bitmap[3] = {0,}, attrlen; 4683 int status; 4684 4685 /* layout type */ 4686 p = xdr_inline_decode(xdr, 4); 4687 if (unlikely(!p)) 4688 return -EIO; 4689 res->l_type = be32_to_cpup(p); 4690 4691 /* thi_hintset bitmap */ 4692 status = decode_attr_bitmap(xdr, bitmap); 4693 if (status < 0) 4694 goto xdr_error; 4695 4696 /* thi_hintlist length */ 4697 status = decode_attr_length(xdr, &attrlen, &savep); 4698 if (status < 0) 4699 goto xdr_error; 4700 /* thi_hintlist */ 4701 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4702 if (status < 0) 4703 goto xdr_error; 4704 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4705 if (status < 0) 4706 goto xdr_error; 4707 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4708 THRESHOLD_RD_IO); 4709 if (status < 0) 4710 goto xdr_error; 4711 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4712 THRESHOLD_WR_IO); 4713 if (status < 0) 4714 goto xdr_error; 4715 4716 status = verify_attr_len(xdr, savep, attrlen); 4717 res->bm = bitmap[0]; 4718 4719 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4720 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4721 res->wr_io_sz); 4722xdr_error: 4723 dprintk("%s ret=%d!\n", __func__, status); 4724 return status; 4725} 4726 4727/* 4728 * Thresholds on pNFS direct I/O vrs MDS I/O 4729 */ 4730static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4731 uint32_t *bitmap, 4732 struct nfs4_threshold *res) 4733{ 4734 __be32 *p; 4735 int status = 0; 4736 uint32_t num; 4737 4738 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4739 return -EIO; 4740 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4741 /* Did the server return an unrequested attribute? */ 4742 if (unlikely(res == NULL)) 4743 return -EREMOTEIO; 4744 p = xdr_inline_decode(xdr, 4); 4745 if (unlikely(!p)) 4746 return -EIO; 4747 num = be32_to_cpup(p); 4748 if (num == 0) 4749 return 0; 4750 if (num > 1) 4751 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4752 "drivers per filesystem not supported\n", 4753 __func__); 4754 4755 status = decode_first_threshold_item4(xdr, res); 4756 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4757 } 4758 return status; 4759} 4760 4761static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4762 struct nfs_fattr *fattr, struct nfs_fh *fh, 4763 struct nfs4_fs_locations *fs_loc, const struct nfs_server *server) 4764{ 4765 int status; 4766 umode_t fmode = 0; 4767 uint32_t type; 4768 int32_t err; 4769 4770 status = decode_attr_type(xdr, bitmap, &type); 4771 if (status < 0) 4772 goto xdr_error; 4773 fattr->mode = 0; 4774 if (status != 0) { 4775 fattr->mode |= nfs_type2fmt[type]; 4776 fattr->valid |= status; 4777 } 4778 4779 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4780 if (status < 0) 4781 goto xdr_error; 4782 fattr->valid |= status; 4783 4784 status = decode_attr_size(xdr, bitmap, &fattr->size); 4785 if (status < 0) 4786 goto xdr_error; 4787 fattr->valid |= status; 4788 4789 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4790 if (status < 0) 4791 goto xdr_error; 4792 fattr->valid |= status; 4793 4794 err = 0; 4795 status = decode_attr_error(xdr, bitmap, &err); 4796 if (status < 0) 4797 goto xdr_error; 4798 4799 status = decode_attr_filehandle(xdr, bitmap, fh); 4800 if (status < 0) 4801 goto xdr_error; 4802 4803 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4804 if (status < 0) 4805 goto xdr_error; 4806 fattr->valid |= status; 4807 4808 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4809 if (status < 0) 4810 goto xdr_error; 4811 fattr->valid |= status; 4812 4813 status = -EIO; 4814 if (unlikely(bitmap[0])) 4815 goto xdr_error; 4816 4817 status = decode_attr_mode(xdr, bitmap, &fmode); 4818 if (status < 0) 4819 goto xdr_error; 4820 if (status != 0) { 4821 fattr->mode |= fmode; 4822 fattr->valid |= status; 4823 } 4824 4825 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4826 if (status < 0) 4827 goto xdr_error; 4828 fattr->valid |= status; 4829 4830 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4831 if (status < 0) 4832 goto xdr_error; 4833 fattr->valid |= status; 4834 4835 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4836 if (status < 0) 4837 goto xdr_error; 4838 fattr->valid |= status; 4839 4840 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4841 if (status < 0) 4842 goto xdr_error; 4843 fattr->valid |= status; 4844 4845 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4846 if (status < 0) 4847 goto xdr_error; 4848 fattr->valid |= status; 4849 4850 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4851 if (status < 0) 4852 goto xdr_error; 4853 fattr->valid |= status; 4854 4855 status = decode_attr_time_create(xdr, bitmap, &fattr->btime); 4856 if (status < 0) 4857 goto xdr_error; 4858 fattr->valid |= status; 4859 4860 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4861 if (status < 0) 4862 goto xdr_error; 4863 fattr->valid |= status; 4864 4865 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4866 if (status < 0) 4867 goto xdr_error; 4868 fattr->valid |= status; 4869 4870 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4871 if (status < 0) 4872 goto xdr_error; 4873 fattr->valid |= status; 4874 4875 status = -EIO; 4876 if (unlikely(bitmap[1])) 4877 goto xdr_error; 4878 4879 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4880 if (status < 0) 4881 goto xdr_error; 4882 4883 status = decode_attr_security_label(xdr, bitmap, fattr->label); 4884 if (status < 0) 4885 goto xdr_error; 4886 fattr->valid |= status; 4887 4888xdr_error: 4889 dprintk("%s: xdr returned %d\n", __func__, -status); 4890 return status; 4891} 4892 4893static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4894 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4895 const struct nfs_server *server) 4896{ 4897 unsigned int savep; 4898 uint32_t attrlen, 4899 bitmap[3] = {0}; 4900 int status; 4901 4902 status = decode_op_hdr(xdr, OP_GETATTR); 4903 if (status < 0) 4904 goto xdr_error; 4905 4906 status = decode_attr_bitmap(xdr, bitmap); 4907 if (status < 0) 4908 goto xdr_error; 4909 4910 status = decode_attr_length(xdr, &attrlen, &savep); 4911 if (status < 0) 4912 goto xdr_error; 4913 4914 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server); 4915 if (status < 0) 4916 goto xdr_error; 4917 4918 status = verify_attr_len(xdr, savep, attrlen); 4919xdr_error: 4920 dprintk("%s: xdr returned %d\n", __func__, -status); 4921 return status; 4922} 4923 4924static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4925 const struct nfs_server *server) 4926{ 4927 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server); 4928} 4929 4930/* 4931 * Decode potentially multiple layout types. 4932 */ 4933static int decode_pnfs_layout_types(struct xdr_stream *xdr, 4934 struct nfs_fsinfo *fsinfo) 4935{ 4936 __be32 *p; 4937 uint32_t i; 4938 4939 p = xdr_inline_decode(xdr, 4); 4940 if (unlikely(!p)) 4941 return -EIO; 4942 fsinfo->nlayouttypes = be32_to_cpup(p); 4943 4944 /* pNFS is not supported by the underlying file system */ 4945 if (fsinfo->nlayouttypes == 0) 4946 return 0; 4947 4948 /* Decode and set first layout type, move xdr->p past unused types */ 4949 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4); 4950 if (unlikely(!p)) 4951 return -EIO; 4952 4953 /* If we get too many, then just cap it at the max */ 4954 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) { 4955 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n", 4956 __func__, fsinfo->nlayouttypes); 4957 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES; 4958 } 4959 4960 for(i = 0; i < fsinfo->nlayouttypes; ++i) 4961 fsinfo->layouttype[i] = be32_to_cpup(p++); 4962 return 0; 4963} 4964 4965/* 4966 * The type of file system exported. 4967 * Note we must ensure that layouttype is set in any non-error case. 4968 */ 4969static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4970 struct nfs_fsinfo *fsinfo) 4971{ 4972 int status = 0; 4973 4974 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4975 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4976 return -EIO; 4977 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4978 status = decode_pnfs_layout_types(xdr, fsinfo); 4979 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4980 } 4981 return status; 4982} 4983 4984/* 4985 * The preferred block size for layout directed io 4986 */ 4987static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4988 uint32_t *res) 4989{ 4990 __be32 *p; 4991 4992 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4993 *res = 0; 4994 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4995 p = xdr_inline_decode(xdr, 4); 4996 if (unlikely(!p)) 4997 return -EIO; 4998 *res = be32_to_cpup(p); 4999 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 5000 } 5001 return 0; 5002} 5003 5004/* 5005 * The granularity of a CLONE operation. 5006 */ 5007static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 5008 uint32_t *res) 5009{ 5010 __be32 *p; 5011 5012 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 5013 *res = 0; 5014 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { 5015 p = xdr_inline_decode(xdr, 4); 5016 if (unlikely(!p)) 5017 return -EIO; 5018 *res = be32_to_cpup(p); 5019 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; 5020 } 5021 return 0; 5022} 5023 5024static int decode_attr_change_attr_type(struct xdr_stream *xdr, 5025 uint32_t *bitmap, 5026 enum nfs4_change_attr_type *res) 5027{ 5028 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED; 5029 5030 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 5031 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) { 5032 if (xdr_stream_decode_u32(xdr, &tmp)) 5033 return -EIO; 5034 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE; 5035 } 5036 5037 switch(tmp) { 5038 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR: 5039 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER: 5040 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS: 5041 case NFS4_CHANGE_TYPE_IS_TIME_METADATA: 5042 *res = tmp; 5043 break; 5044 default: 5045 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED; 5046 } 5047 return 0; 5048} 5049 5050static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 5051{ 5052 unsigned int savep; 5053 uint32_t attrlen, bitmap[3]; 5054 int status; 5055 5056 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5057 goto xdr_error; 5058 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5059 goto xdr_error; 5060 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5061 goto xdr_error; 5062 5063 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 5064 5065 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 5066 goto xdr_error; 5067 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 5068 goto xdr_error; 5069 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 5070 goto xdr_error; 5071 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 5072 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 5073 goto xdr_error; 5074 fsinfo->wtpref = fsinfo->wtmax; 5075 5076 status = -EIO; 5077 if (unlikely(bitmap[0])) 5078 goto xdr_error; 5079 5080 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 5081 if (status != 0) 5082 goto xdr_error; 5083 status = decode_attr_pnfstype(xdr, bitmap, fsinfo); 5084 if (status != 0) 5085 goto xdr_error; 5086 5087 status = -EIO; 5088 if (unlikely(bitmap[1])) 5089 goto xdr_error; 5090 5091 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 5092 if (status) 5093 goto xdr_error; 5094 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); 5095 if (status) 5096 goto xdr_error; 5097 5098 status = decode_attr_change_attr_type(xdr, bitmap, 5099 &fsinfo->change_attr_type); 5100 if (status) 5101 goto xdr_error; 5102 5103 status = decode_attr_xattrsupport(xdr, bitmap, 5104 &fsinfo->xattr_support); 5105 if (status) 5106 goto xdr_error; 5107 5108 status = verify_attr_len(xdr, savep, attrlen); 5109xdr_error: 5110 dprintk("%s: xdr returned %d!\n", __func__, -status); 5111 return status; 5112} 5113 5114static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 5115{ 5116 __be32 *p; 5117 uint32_t len; 5118 int status; 5119 5120 /* Zero handle first to allow comparisons */ 5121 memset(fh, 0, sizeof(*fh)); 5122 5123 status = decode_op_hdr(xdr, OP_GETFH); 5124 if (status) 5125 return status; 5126 5127 p = xdr_inline_decode(xdr, 4); 5128 if (unlikely(!p)) 5129 return -EIO; 5130 len = be32_to_cpup(p); 5131 if (len > NFS4_FHSIZE || len == 0) { 5132 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE); 5133 return -EREMOTEIO; 5134 } 5135 fh->size = len; 5136 p = xdr_inline_decode(xdr, len); 5137 if (unlikely(!p)) 5138 return -EIO; 5139 memcpy(fh->data, p, len); 5140 return 0; 5141} 5142 5143static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5144{ 5145 int status; 5146 5147 status = decode_op_hdr(xdr, OP_LINK); 5148 if (status) 5149 return status; 5150 return decode_change_info(xdr, cinfo); 5151} 5152 5153/* 5154 * We create the owner, so we know a proper owner.id length is 4. 5155 */ 5156static int decode_lock_denied(struct xdr_stream *xdr, struct file_lock *fl) 5157{ 5158 uint64_t offset, length, clientid; 5159 __be32 *p; 5160 uint32_t namelen, type; 5161 5162 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 5163 if (unlikely(!p)) 5164 return -EIO; 5165 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 5166 p = xdr_decode_hyper(p, &length); 5167 type = be32_to_cpup(p++); /* 4 byte read */ 5168 if (fl != NULL) { /* manipulate file lock */ 5169 fl->fl_start = (loff_t)offset; 5170 fl->fl_end = fl->fl_start + (loff_t)length - 1; 5171 if (length == ~(uint64_t)0) 5172 fl->fl_end = OFFSET_MAX; 5173 fl->c.flc_type = F_WRLCK; 5174 if (type & 1) 5175 fl->c.flc_type = F_RDLCK; 5176 fl->c.flc_pid = 0; 5177 } 5178 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 5179 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 5180 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 5181 if (likely(!p)) 5182 return -EIO; 5183 return -NFS4ERR_DENIED; 5184} 5185 5186static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 5187{ 5188 int status; 5189 5190 status = decode_op_hdr(xdr, OP_LOCK); 5191 if (status == -EIO) 5192 goto out; 5193 if (status == 0) { 5194 status = decode_lock_stateid(xdr, &res->stateid); 5195 if (unlikely(status)) 5196 goto out; 5197 } else if (status == -NFS4ERR_DENIED) 5198 status = decode_lock_denied(xdr, NULL); 5199 if (res->open_seqid != NULL) 5200 nfs_increment_open_seqid(status, res->open_seqid); 5201 nfs_increment_lock_seqid(status, res->lock_seqid); 5202out: 5203 return status; 5204} 5205 5206static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 5207{ 5208 int status; 5209 status = decode_op_hdr(xdr, OP_LOCKT); 5210 if (status == -NFS4ERR_DENIED) 5211 return decode_lock_denied(xdr, res->denied); 5212 return status; 5213} 5214 5215static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 5216{ 5217 int status; 5218 5219 status = decode_op_hdr(xdr, OP_LOCKU); 5220 if (status != -EIO) 5221 nfs_increment_lock_seqid(status, res->seqid); 5222 if (status == 0) 5223 status = decode_lock_stateid(xdr, &res->stateid); 5224 return status; 5225} 5226 5227static int decode_release_lockowner(struct xdr_stream *xdr) 5228{ 5229 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 5230} 5231 5232static int decode_lookup(struct xdr_stream *xdr) 5233{ 5234 return decode_op_hdr(xdr, OP_LOOKUP); 5235} 5236 5237static int decode_lookupp(struct xdr_stream *xdr) 5238{ 5239 return decode_op_hdr(xdr, OP_LOOKUPP); 5240} 5241 5242/* This is too sick! */ 5243static int decode_space_limit(struct xdr_stream *xdr, 5244 unsigned long *pagemod_limit) 5245{ 5246 __be32 *p; 5247 uint32_t limit_type, nblocks, blocksize; 5248 u64 maxsize = 0; 5249 5250 p = xdr_inline_decode(xdr, 12); 5251 if (unlikely(!p)) 5252 return -EIO; 5253 limit_type = be32_to_cpup(p++); 5254 switch (limit_type) { 5255 case NFS4_LIMIT_SIZE: 5256 xdr_decode_hyper(p, &maxsize); 5257 break; 5258 case NFS4_LIMIT_BLOCKS: 5259 nblocks = be32_to_cpup(p++); 5260 blocksize = be32_to_cpup(p); 5261 maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 5262 } 5263 maxsize >>= PAGE_SHIFT; 5264 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX); 5265 return 0; 5266} 5267 5268static int decode_rw_delegation(struct xdr_stream *xdr, 5269 struct nfs4_open_delegation *res) 5270{ 5271 __be32 *p; 5272 int status; 5273 5274 status = decode_delegation_stateid(xdr, &res->stateid); 5275 if (unlikely(status)) 5276 return status; 5277 p = xdr_inline_decode(xdr, 4); 5278 if (unlikely(!p)) 5279 return -EIO; 5280 res->do_recall = be32_to_cpup(p); 5281 5282 switch (res->open_delegation_type) { 5283 case NFS4_OPEN_DELEGATE_READ: 5284 case NFS4_OPEN_DELEGATE_READ_ATTRS_DELEG: 5285 res->type = FMODE_READ; 5286 break; 5287 case NFS4_OPEN_DELEGATE_WRITE: 5288 case NFS4_OPEN_DELEGATE_WRITE_ATTRS_DELEG: 5289 res->type = FMODE_WRITE|FMODE_READ; 5290 if (decode_space_limit(xdr, &res->pagemod_limit) < 0) 5291 return -EIO; 5292 } 5293 return decode_ace(xdr, NULL); 5294} 5295 5296static int decode_no_delegation(struct xdr_stream *xdr, 5297 struct nfs4_open_delegation *res) 5298{ 5299 __be32 *p; 5300 5301 p = xdr_inline_decode(xdr, 4); 5302 if (unlikely(!p)) 5303 return -EIO; 5304 res->why_no_delegation = be32_to_cpup(p); 5305 switch (res->why_no_delegation) { 5306 case WND4_CONTENTION: 5307 case WND4_RESOURCE: 5308 p = xdr_inline_decode(xdr, 4); 5309 if (unlikely(!p)) 5310 return -EIO; 5311 res->will_notify = be32_to_cpup(p); 5312 } 5313 return 0; 5314} 5315 5316static int decode_delegation(struct xdr_stream *xdr, 5317 struct nfs4_open_delegation *res) 5318{ 5319 __be32 *p; 5320 5321 p = xdr_inline_decode(xdr, 4); 5322 if (unlikely(!p)) 5323 return -EIO; 5324 res->open_delegation_type = be32_to_cpup(p); 5325 switch (res->open_delegation_type) { 5326 case NFS4_OPEN_DELEGATE_NONE: 5327 return 0; 5328 case NFS4_OPEN_DELEGATE_READ: 5329 case NFS4_OPEN_DELEGATE_WRITE: 5330 case NFS4_OPEN_DELEGATE_READ_ATTRS_DELEG: 5331 case NFS4_OPEN_DELEGATE_WRITE_ATTRS_DELEG: 5332 return decode_rw_delegation(xdr, res); 5333 case NFS4_OPEN_DELEGATE_NONE_EXT: 5334 return decode_no_delegation(xdr, res); 5335 } 5336 return -EIO; 5337} 5338 5339static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 5340{ 5341 __be32 *p; 5342 uint32_t savewords, bmlen, i; 5343 int status; 5344 5345 if (!__decode_op_hdr(xdr, OP_OPEN, &status)) 5346 return status; 5347 nfs_increment_open_seqid(status, res->seqid); 5348 if (status) 5349 return status; 5350 status = decode_open_stateid(xdr, &res->stateid); 5351 if (unlikely(status)) 5352 return status; 5353 5354 decode_change_info(xdr, &res->cinfo); 5355 5356 p = xdr_inline_decode(xdr, 8); 5357 if (unlikely(!p)) 5358 return -EIO; 5359 res->rflags = be32_to_cpup(p++); 5360 bmlen = be32_to_cpup(p); 5361 if (bmlen > 10) 5362 goto xdr_error; 5363 5364 p = xdr_inline_decode(xdr, bmlen << 2); 5365 if (unlikely(!p)) 5366 return -EIO; 5367 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 5368 for (i = 0; i < savewords; ++i) 5369 res->attrset[i] = be32_to_cpup(p++); 5370 for (; i < NFS4_BITMAP_SIZE; i++) 5371 res->attrset[i] = 0; 5372 5373 return decode_delegation(xdr, &res->delegation); 5374xdr_error: 5375 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 5376 return -EIO; 5377} 5378 5379static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 5380{ 5381 int status; 5382 5383 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5384 if (status != -EIO) 5385 nfs_increment_open_seqid(status, res->seqid); 5386 if (!status) 5387 status = decode_open_stateid(xdr, &res->stateid); 5388 return status; 5389} 5390 5391static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5392{ 5393 int status; 5394 5395 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5396 if (status != -EIO) 5397 nfs_increment_open_seqid(status, res->seqid); 5398 if (!status) 5399 status = decode_open_stateid(xdr, &res->stateid); 5400 return status; 5401} 5402 5403static int decode_putfh(struct xdr_stream *xdr) 5404{ 5405 return decode_op_hdr(xdr, OP_PUTFH); 5406} 5407 5408static int decode_putrootfh(struct xdr_stream *xdr) 5409{ 5410 return decode_op_hdr(xdr, OP_PUTROOTFH); 5411} 5412 5413static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, 5414 struct nfs_pgio_res *res) 5415{ 5416 __be32 *p; 5417 uint32_t count, eof, recvd; 5418 int status; 5419 5420 status = decode_op_hdr(xdr, OP_READ); 5421 if (status) 5422 return status; 5423 p = xdr_inline_decode(xdr, 8); 5424 if (unlikely(!p)) 5425 return -EIO; 5426 eof = be32_to_cpup(p++); 5427 count = be32_to_cpup(p); 5428 recvd = xdr_read_pages(xdr, count); 5429 if (count > recvd) { 5430 dprintk("NFS: server cheating in read reply: " 5431 "count %u > recvd %u\n", count, recvd); 5432 count = recvd; 5433 eof = 0; 5434 } 5435 res->eof = eof; 5436 res->count = count; 5437 return 0; 5438} 5439 5440static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5441{ 5442 int status; 5443 __be32 verf[2]; 5444 5445 status = decode_op_hdr(xdr, OP_READDIR); 5446 if (!status) 5447 status = decode_verifier(xdr, readdir->verifier.data); 5448 if (unlikely(status)) 5449 return status; 5450 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5451 dprintk("%s: verifier = %08x:%08x\n", 5452 __func__, verf[0], verf[1]); 5453 return xdr_read_pages(xdr, xdr->buf->page_len); 5454} 5455 5456static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5457{ 5458 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5459 u32 len, recvd; 5460 __be32 *p; 5461 int status; 5462 5463 status = decode_op_hdr(xdr, OP_READLINK); 5464 if (status) 5465 return status; 5466 5467 /* Convert length of symlink */ 5468 p = xdr_inline_decode(xdr, 4); 5469 if (unlikely(!p)) 5470 return -EIO; 5471 len = be32_to_cpup(p); 5472 if (len >= rcvbuf->page_len || len <= 0) { 5473 dprintk("nfs: server returned giant symlink!\n"); 5474 return -ENAMETOOLONG; 5475 } 5476 recvd = xdr_read_pages(xdr, len); 5477 if (recvd < len) { 5478 dprintk("NFS: server cheating in readlink reply: " 5479 "count %u > recvd %u\n", len, recvd); 5480 return -EIO; 5481 } 5482 /* 5483 * The XDR encode routine has set things up so that 5484 * the link text will be copied directly into the 5485 * buffer. We just have to do overflow-checking, 5486 * and null-terminate the text (the VFS expects 5487 * null-termination). 5488 */ 5489 xdr_terminate_string(rcvbuf, len); 5490 return 0; 5491} 5492 5493static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5494{ 5495 int status; 5496 5497 status = decode_op_hdr(xdr, OP_REMOVE); 5498 if (status) 5499 goto out; 5500 status = decode_change_info(xdr, cinfo); 5501out: 5502 return status; 5503} 5504 5505static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5506 struct nfs4_change_info *new_cinfo) 5507{ 5508 int status; 5509 5510 status = decode_op_hdr(xdr, OP_RENAME); 5511 if (status) 5512 goto out; 5513 if ((status = decode_change_info(xdr, old_cinfo))) 5514 goto out; 5515 status = decode_change_info(xdr, new_cinfo); 5516out: 5517 return status; 5518} 5519 5520static int decode_renew(struct xdr_stream *xdr) 5521{ 5522 return decode_op_hdr(xdr, OP_RENEW); 5523} 5524 5525static int 5526decode_restorefh(struct xdr_stream *xdr) 5527{ 5528 return decode_op_hdr(xdr, OP_RESTOREFH); 5529} 5530 5531static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5532 struct nfs_getaclres *res, enum nfs4_acl_type type) 5533{ 5534 unsigned int savep; 5535 uint32_t attrlen, 5536 bitmap[3] = {0}; 5537 int status; 5538 5539 res->acl_len = 0; 5540 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5541 goto out; 5542 5543 xdr_enter_page(xdr, xdr->buf->page_len); 5544 5545 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5546 goto out; 5547 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5548 goto out; 5549 5550 switch (type) { 5551 default: 5552 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5553 return -EIO; 5554 if (!(bitmap[0] & FATTR4_WORD0_ACL)) 5555 return -EOPNOTSUPP; 5556 break; 5557 case NFS4ACL_DACL: 5558 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_DACL - 1U))) 5559 return -EIO; 5560 if (!(bitmap[1] & FATTR4_WORD1_DACL)) 5561 return -EOPNOTSUPP; 5562 break; 5563 case NFS4ACL_SACL: 5564 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_SACL - 1U))) 5565 return -EIO; 5566 if (!(bitmap[1] & FATTR4_WORD1_SACL)) 5567 return -EOPNOTSUPP; 5568 } 5569 5570 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5571 * are stored with the acl data to handle the problem of 5572 * variable length bitmaps.*/ 5573 res->acl_data_offset = xdr_page_pos(xdr); 5574 res->acl_len = attrlen; 5575 5576 /* Check for receive buffer overflow */ 5577 if (res->acl_len > xdr_stream_remaining(xdr) || 5578 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5579 res->acl_flags |= NFS4_ACL_TRUNC; 5580 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n", 5581 attrlen, xdr_stream_remaining(xdr)); 5582 } 5583out: 5584 return status; 5585} 5586 5587static int 5588decode_savefh(struct xdr_stream *xdr) 5589{ 5590 return decode_op_hdr(xdr, OP_SAVEFH); 5591} 5592 5593static int decode_setattr(struct xdr_stream *xdr) 5594{ 5595 int status; 5596 5597 status = decode_op_hdr(xdr, OP_SETATTR); 5598 if (status) 5599 return status; 5600 if (decode_bitmap4(xdr, NULL, 0) >= 0) 5601 return 0; 5602 return -EIO; 5603} 5604 5605static int decode_delegattr(struct xdr_stream *xdr) 5606{ 5607 return decode_setattr(xdr); 5608} 5609 5610static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5611{ 5612 __be32 *p; 5613 uint32_t opnum; 5614 int32_t nfserr; 5615 5616 p = xdr_inline_decode(xdr, 8); 5617 if (unlikely(!p)) 5618 return -EIO; 5619 opnum = be32_to_cpup(p++); 5620 if (opnum != OP_SETCLIENTID) { 5621 dprintk("nfs: decode_setclientid: Server returned operation" 5622 " %d\n", opnum); 5623 return -EIO; 5624 } 5625 nfserr = be32_to_cpup(p); 5626 if (nfserr == NFS_OK) { 5627 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5628 if (unlikely(!p)) 5629 return -EIO; 5630 p = xdr_decode_hyper(p, &res->clientid); 5631 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5632 } else if (nfserr == NFSERR_CLID_INUSE) { 5633 uint32_t len; 5634 5635 /* skip netid string */ 5636 p = xdr_inline_decode(xdr, 4); 5637 if (unlikely(!p)) 5638 return -EIO; 5639 len = be32_to_cpup(p); 5640 p = xdr_inline_decode(xdr, len); 5641 if (unlikely(!p)) 5642 return -EIO; 5643 5644 /* skip uaddr string */ 5645 p = xdr_inline_decode(xdr, 4); 5646 if (unlikely(!p)) 5647 return -EIO; 5648 len = be32_to_cpup(p); 5649 p = xdr_inline_decode(xdr, len); 5650 if (unlikely(!p)) 5651 return -EIO; 5652 return -NFSERR_CLID_INUSE; 5653 } else 5654 return nfs4_stat_to_errno(nfserr); 5655 5656 return 0; 5657} 5658 5659static int decode_setclientid_confirm(struct xdr_stream *xdr) 5660{ 5661 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5662} 5663 5664static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) 5665{ 5666 __be32 *p; 5667 int status; 5668 5669 status = decode_op_hdr(xdr, OP_WRITE); 5670 if (status) 5671 return status; 5672 5673 p = xdr_inline_decode(xdr, 8); 5674 if (unlikely(!p)) 5675 return -EIO; 5676 res->count = be32_to_cpup(p++); 5677 res->verf->committed = be32_to_cpup(p++); 5678 return decode_write_verifier(xdr, &res->verf->verifier); 5679} 5680 5681static int decode_delegreturn(struct xdr_stream *xdr) 5682{ 5683 return decode_op_hdr(xdr, OP_DELEGRETURN); 5684} 5685 5686static int decode_secinfo_gss(struct xdr_stream *xdr, 5687 struct nfs4_secinfo4 *flavor) 5688{ 5689 u32 oid_len; 5690 __be32 *p; 5691 5692 p = xdr_inline_decode(xdr, 4); 5693 if (unlikely(!p)) 5694 return -EIO; 5695 oid_len = be32_to_cpup(p); 5696 if (oid_len > GSS_OID_MAX_LEN) 5697 return -EINVAL; 5698 5699 p = xdr_inline_decode(xdr, oid_len); 5700 if (unlikely(!p)) 5701 return -EIO; 5702 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5703 flavor->flavor_info.oid.len = oid_len; 5704 5705 p = xdr_inline_decode(xdr, 8); 5706 if (unlikely(!p)) 5707 return -EIO; 5708 flavor->flavor_info.qop = be32_to_cpup(p++); 5709 flavor->flavor_info.service = be32_to_cpup(p); 5710 5711 return 0; 5712} 5713 5714static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5715{ 5716 struct nfs4_secinfo4 *sec_flavor; 5717 unsigned int i, num_flavors; 5718 int status; 5719 __be32 *p; 5720 5721 p = xdr_inline_decode(xdr, 4); 5722 if (unlikely(!p)) 5723 return -EIO; 5724 5725 res->flavors->num_flavors = 0; 5726 num_flavors = be32_to_cpup(p); 5727 5728 for (i = 0; i < num_flavors; i++) { 5729 sec_flavor = &res->flavors->flavors[i]; 5730 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5731 break; 5732 5733 p = xdr_inline_decode(xdr, 4); 5734 if (unlikely(!p)) 5735 return -EIO; 5736 sec_flavor->flavor = be32_to_cpup(p); 5737 5738 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5739 status = decode_secinfo_gss(xdr, sec_flavor); 5740 if (status) 5741 goto out; 5742 } 5743 res->flavors->num_flavors++; 5744 } 5745 5746 status = 0; 5747out: 5748 return status; 5749} 5750 5751static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5752{ 5753 int status = decode_op_hdr(xdr, OP_SECINFO); 5754 if (status) 5755 return status; 5756 return decode_secinfo_common(xdr, res); 5757} 5758 5759#if defined(CONFIG_NFS_V4_1) 5760static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5761{ 5762 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5763 if (status) 5764 return status; 5765 return decode_secinfo_common(xdr, res); 5766} 5767 5768static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5769{ 5770 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words, 5771 ARRAY_SIZE(op_map->u.words)) < 0) 5772 return -EIO; 5773 return 0; 5774} 5775 5776static int decode_exchange_id(struct xdr_stream *xdr, 5777 struct nfs41_exchange_id_res *res) 5778{ 5779 __be32 *p; 5780 uint32_t dummy; 5781 char *dummy_str; 5782 int status; 5783 uint32_t impl_id_count; 5784 5785 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5786 if (status) 5787 return status; 5788 5789 p = xdr_inline_decode(xdr, 8); 5790 if (unlikely(!p)) 5791 return -EIO; 5792 xdr_decode_hyper(p, &res->clientid); 5793 p = xdr_inline_decode(xdr, 12); 5794 if (unlikely(!p)) 5795 return -EIO; 5796 res->seqid = be32_to_cpup(p++); 5797 res->flags = be32_to_cpup(p++); 5798 5799 res->state_protect.how = be32_to_cpup(p); 5800 switch (res->state_protect.how) { 5801 case SP4_NONE: 5802 break; 5803 case SP4_MACH_CRED: 5804 status = decode_op_map(xdr, &res->state_protect.enforce); 5805 if (status) 5806 return status; 5807 status = decode_op_map(xdr, &res->state_protect.allow); 5808 if (status) 5809 return status; 5810 break; 5811 default: 5812 WARN_ON_ONCE(1); 5813 return -EIO; 5814 } 5815 5816 /* server_owner4.so_minor_id */ 5817 p = xdr_inline_decode(xdr, 8); 5818 if (unlikely(!p)) 5819 return -EIO; 5820 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5821 5822 /* server_owner4.so_major_id */ 5823 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5824 if (unlikely(status)) 5825 return status; 5826 memcpy(res->server_owner->major_id, dummy_str, dummy); 5827 res->server_owner->major_id_sz = dummy; 5828 5829 /* server_scope4 */ 5830 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5831 if (unlikely(status)) 5832 return status; 5833 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5834 res->server_scope->server_scope_sz = dummy; 5835 5836 /* Implementation Id */ 5837 p = xdr_inline_decode(xdr, 4); 5838 if (unlikely(!p)) 5839 return -EIO; 5840 impl_id_count = be32_to_cpup(p++); 5841 5842 if (impl_id_count) { 5843 /* nii_domain */ 5844 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5845 if (unlikely(status)) 5846 return status; 5847 memcpy(res->impl_id->domain, dummy_str, dummy); 5848 5849 /* nii_name */ 5850 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5851 if (unlikely(status)) 5852 return status; 5853 memcpy(res->impl_id->name, dummy_str, dummy); 5854 5855 /* nii_date */ 5856 p = xdr_inline_decode(xdr, 12); 5857 if (unlikely(!p)) 5858 return -EIO; 5859 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5860 res->impl_id->date.nseconds = be32_to_cpup(p); 5861 5862 /* if there's more than one entry, ignore the rest */ 5863 } 5864 return 0; 5865} 5866 5867static int decode_chan_attrs(struct xdr_stream *xdr, 5868 struct nfs4_channel_attrs *attrs) 5869{ 5870 __be32 *p; 5871 u32 nr_attrs, val; 5872 5873 p = xdr_inline_decode(xdr, 28); 5874 if (unlikely(!p)) 5875 return -EIO; 5876 val = be32_to_cpup(p++); /* headerpadsz */ 5877 if (val) 5878 return -EINVAL; /* no support for header padding yet */ 5879 attrs->max_rqst_sz = be32_to_cpup(p++); 5880 attrs->max_resp_sz = be32_to_cpup(p++); 5881 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5882 attrs->max_ops = be32_to_cpup(p++); 5883 attrs->max_reqs = be32_to_cpup(p++); 5884 nr_attrs = be32_to_cpup(p); 5885 if (unlikely(nr_attrs > 1)) { 5886 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5887 "count %u\n", __func__, nr_attrs); 5888 return -EINVAL; 5889 } 5890 if (nr_attrs == 1) { 5891 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5892 if (unlikely(!p)) 5893 return -EIO; 5894 } 5895 return 0; 5896} 5897 5898static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5899{ 5900 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5901} 5902 5903static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5904 struct nfs41_bind_conn_to_session_res *res) 5905{ 5906 __be32 *p; 5907 int status; 5908 5909 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5910 if (!status) 5911 status = decode_sessionid(xdr, &res->sessionid); 5912 if (unlikely(status)) 5913 return status; 5914 5915 /* dir flags, rdma mode bool */ 5916 p = xdr_inline_decode(xdr, 8); 5917 if (unlikely(!p)) 5918 return -EIO; 5919 5920 res->dir = be32_to_cpup(p++); 5921 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5922 return -EIO; 5923 if (be32_to_cpup(p) == 0) 5924 res->use_conn_in_rdma_mode = false; 5925 else 5926 res->use_conn_in_rdma_mode = true; 5927 5928 return 0; 5929} 5930 5931static int decode_create_session(struct xdr_stream *xdr, 5932 struct nfs41_create_session_res *res) 5933{ 5934 __be32 *p; 5935 int status; 5936 5937 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5938 if (!status) 5939 status = decode_sessionid(xdr, &res->sessionid); 5940 if (unlikely(status)) 5941 return status; 5942 5943 /* seqid, flags */ 5944 p = xdr_inline_decode(xdr, 8); 5945 if (unlikely(!p)) 5946 return -EIO; 5947 res->seqid = be32_to_cpup(p++); 5948 res->flags = be32_to_cpup(p); 5949 5950 /* Channel attributes */ 5951 status = decode_chan_attrs(xdr, &res->fc_attrs); 5952 if (!status) 5953 status = decode_chan_attrs(xdr, &res->bc_attrs); 5954 return status; 5955} 5956 5957static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5958{ 5959 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5960} 5961 5962static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5963{ 5964 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5965} 5966 5967static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5968{ 5969 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5970} 5971#endif /* CONFIG_NFS_V4_1 */ 5972 5973static int decode_sequence(struct xdr_stream *xdr, 5974 struct nfs4_sequence_res *res, 5975 struct rpc_rqst *rqstp) 5976{ 5977#if defined(CONFIG_NFS_V4_1) 5978 struct nfs4_session *session; 5979 struct nfs4_sessionid id; 5980 u32 dummy; 5981 int status; 5982 __be32 *p; 5983 5984 if (res->sr_slot == NULL) 5985 return 0; 5986 if (!res->sr_slot->table->session) 5987 return 0; 5988 5989 status = decode_op_hdr(xdr, OP_SEQUENCE); 5990 if (!status) 5991 status = decode_sessionid(xdr, &id); 5992 if (unlikely(status)) 5993 goto out_err; 5994 5995 /* 5996 * If the server returns different values for sessionID, slotID or 5997 * sequence number, the server is looney tunes. 5998 */ 5999 status = -EREMOTEIO; 6000 session = res->sr_slot->table->session; 6001 6002 if (memcmp(id.data, session->sess_id.data, 6003 NFS4_MAX_SESSIONID_LEN)) { 6004 dprintk("%s Invalid session id\n", __func__); 6005 goto out_err; 6006 } 6007 6008 p = xdr_inline_decode(xdr, 20); 6009 if (unlikely(!p)) 6010 goto out_overflow; 6011 6012 /* seqid */ 6013 dummy = be32_to_cpup(p++); 6014 if (dummy != res->sr_slot->seq_nr) { 6015 dprintk("%s Invalid sequence number\n", __func__); 6016 goto out_err; 6017 } 6018 /* slot id */ 6019 dummy = be32_to_cpup(p++); 6020 if (dummy != res->sr_slot->slot_nr) { 6021 dprintk("%s Invalid slot id\n", __func__); 6022 goto out_err; 6023 } 6024 /* highest slot id */ 6025 res->sr_highest_slotid = be32_to_cpup(p++); 6026 /* target highest slot id */ 6027 res->sr_target_highest_slotid = be32_to_cpup(p++); 6028 /* result flags */ 6029 res->sr_status_flags = be32_to_cpup(p); 6030 status = 0; 6031out_err: 6032 res->sr_status = status; 6033 return status; 6034out_overflow: 6035 status = -EIO; 6036 goto out_err; 6037#else /* CONFIG_NFS_V4_1 */ 6038 return 0; 6039#endif /* CONFIG_NFS_V4_1 */ 6040} 6041 6042#if defined(CONFIG_NFS_V4_1) 6043static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 6044{ 6045 stateid->type = NFS4_LAYOUT_STATEID_TYPE; 6046 return decode_stateid(xdr, stateid); 6047} 6048 6049static int decode_get_dir_delegation(struct xdr_stream *xdr, 6050 struct nfs4_getattr_res *res) 6051{ 6052 struct nfs4_gdd_res *gdd_res = res->gdd_res; 6053 nfs4_verifier cookieverf; 6054 u32 bitmap[1]; 6055 int status; 6056 6057 status = decode_op_hdr(xdr, OP_GET_DIR_DELEGATION); 6058 if (status) 6059 return status; 6060 6061 if (xdr_stream_decode_u32(xdr, &gdd_res->status)) 6062 return -EIO; 6063 6064 if (gdd_res->status == GDD4_UNAVAIL) 6065 return xdr_inline_decode(xdr, 4) ? 0 : -EIO; 6066 6067 status = decode_verifier(xdr, &cookieverf); 6068 if (status) 6069 return status; 6070 6071 status = decode_delegation_stateid(xdr, &gdd_res->deleg); 6072 if (status) 6073 return status; 6074 6075 /* Decode supported notification types. */ 6076 status = decode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap)); 6077 if (status < 0) 6078 return status; 6079 6080 /* Decode supported child attributes. */ 6081 status = decode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap)); 6082 if (status < 0) 6083 return status; 6084 6085 /* Decode supported attributes. */ 6086 status = decode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap)); 6087 if (status < 0) 6088 return status; 6089 return 0; 6090} 6091 6092static int decode_getdeviceinfo(struct xdr_stream *xdr, 6093 struct nfs4_getdeviceinfo_res *res) 6094{ 6095 struct pnfs_device *pdev = res->pdev; 6096 __be32 *p; 6097 uint32_t len, type; 6098 int status; 6099 6100 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 6101 if (status) { 6102 if (status == -ETOOSMALL) { 6103 p = xdr_inline_decode(xdr, 4); 6104 if (unlikely(!p)) 6105 return -EIO; 6106 pdev->mincount = be32_to_cpup(p); 6107 dprintk("%s: Min count too small. mincnt = %u\n", 6108 __func__, pdev->mincount); 6109 } 6110 return status; 6111 } 6112 6113 p = xdr_inline_decode(xdr, 8); 6114 if (unlikely(!p)) 6115 return -EIO; 6116 type = be32_to_cpup(p++); 6117 if (type != pdev->layout_type) { 6118 dprintk("%s: layout mismatch req: %u pdev: %u\n", 6119 __func__, pdev->layout_type, type); 6120 return -EINVAL; 6121 } 6122 /* 6123 * Get the length of the opaque device_addr4. xdr_read_pages places 6124 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 6125 * and places the remaining xdr data in xdr_buf->tail 6126 */ 6127 pdev->mincount = be32_to_cpup(p); 6128 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 6129 return -EIO; 6130 6131 /* Parse notification bitmap, verifying that it is zero. */ 6132 p = xdr_inline_decode(xdr, 4); 6133 if (unlikely(!p)) 6134 return -EIO; 6135 len = be32_to_cpup(p); 6136 if (len) { 6137 uint32_t i; 6138 6139 p = xdr_inline_decode(xdr, 4 * len); 6140 if (unlikely(!p)) 6141 return -EIO; 6142 6143 res->notification = be32_to_cpup(p++); 6144 for (i = 1; i < len; i++) { 6145 if (be32_to_cpup(p++)) { 6146 dprintk("%s: unsupported notification\n", 6147 __func__); 6148 return -EIO; 6149 } 6150 } 6151 } 6152 return 0; 6153} 6154 6155static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 6156 struct nfs4_layoutget_res *res) 6157{ 6158 __be32 *p; 6159 int status; 6160 u32 layout_count; 6161 u32 recvd; 6162 6163 status = decode_op_hdr(xdr, OP_LAYOUTGET); 6164 if (status) 6165 goto out; 6166 p = xdr_inline_decode(xdr, 4); 6167 if (unlikely(!p)) 6168 goto out_overflow; 6169 res->return_on_close = be32_to_cpup(p); 6170 decode_layout_stateid(xdr, &res->stateid); 6171 p = xdr_inline_decode(xdr, 4); 6172 if (unlikely(!p)) 6173 goto out_overflow; 6174 layout_count = be32_to_cpup(p); 6175 if (!layout_count) { 6176 dprintk("%s: server responded with empty layout array\n", 6177 __func__); 6178 status = -EINVAL; 6179 goto out; 6180 } 6181 6182 p = xdr_inline_decode(xdr, 28); 6183 if (unlikely(!p)) 6184 goto out_overflow; 6185 p = xdr_decode_hyper(p, &res->range.offset); 6186 p = xdr_decode_hyper(p, &res->range.length); 6187 res->range.iomode = be32_to_cpup(p++); 6188 res->type = be32_to_cpup(p++); 6189 res->layoutp->len = be32_to_cpup(p); 6190 6191 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 6192 __func__, 6193 (unsigned long)res->range.offset, 6194 (unsigned long)res->range.length, 6195 res->range.iomode, 6196 res->type, 6197 res->layoutp->len); 6198 6199 recvd = xdr_read_pages(xdr, res->layoutp->len); 6200 if (res->layoutp->len > recvd) { 6201 dprintk("NFS: server cheating in layoutget reply: " 6202 "layout len %u > recvd %u\n", 6203 res->layoutp->len, recvd); 6204 status = -EINVAL; 6205 goto out; 6206 } 6207 6208 if (layout_count > 1) { 6209 /* We only handle a length one array at the moment. Any 6210 * further entries are just ignored. Note that this means 6211 * the client may see a response that is less than the 6212 * minimum it requested. 6213 */ 6214 dprintk("%s: server responded with %d layouts, dropping tail\n", 6215 __func__, layout_count); 6216 } 6217 6218out: 6219 res->status = status; 6220 return status; 6221out_overflow: 6222 status = -EIO; 6223 goto out; 6224} 6225 6226static int decode_layoutreturn(struct xdr_stream *xdr, 6227 struct nfs4_layoutreturn_res *res) 6228{ 6229 __be32 *p; 6230 int status; 6231 6232 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 6233 if (status) 6234 return status; 6235 p = xdr_inline_decode(xdr, 4); 6236 if (unlikely(!p)) 6237 return -EIO; 6238 res->lrs_present = be32_to_cpup(p); 6239 if (res->lrs_present) 6240 status = decode_layout_stateid(xdr, &res->stateid); 6241 else 6242 nfs4_stateid_copy(&res->stateid, &invalid_stateid); 6243 return status; 6244} 6245 6246static int decode_layoutcommit(struct xdr_stream *xdr, 6247 struct rpc_rqst *req, 6248 struct nfs4_layoutcommit_res *res) 6249{ 6250 __be32 *p; 6251 __u32 sizechanged; 6252 int status; 6253 6254 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 6255 res->status = status; 6256 if (status) 6257 return status; 6258 6259 p = xdr_inline_decode(xdr, 4); 6260 if (unlikely(!p)) 6261 return -EIO; 6262 sizechanged = be32_to_cpup(p); 6263 6264 if (sizechanged) { 6265 /* throw away new size */ 6266 p = xdr_inline_decode(xdr, 8); 6267 if (unlikely(!p)) 6268 return -EIO; 6269 } 6270 return 0; 6271} 6272 6273static int decode_test_stateid(struct xdr_stream *xdr, 6274 struct nfs41_test_stateid_res *res) 6275{ 6276 __be32 *p; 6277 int status; 6278 int num_res; 6279 6280 status = decode_op_hdr(xdr, OP_TEST_STATEID); 6281 if (status) 6282 return status; 6283 6284 p = xdr_inline_decode(xdr, 4); 6285 if (unlikely(!p)) 6286 return -EIO; 6287 num_res = be32_to_cpup(p++); 6288 if (num_res != 1) 6289 return -EIO; 6290 6291 p = xdr_inline_decode(xdr, 4); 6292 if (unlikely(!p)) 6293 return -EIO; 6294 res->status = be32_to_cpup(p++); 6295 6296 return status; 6297} 6298 6299static int decode_free_stateid(struct xdr_stream *xdr, 6300 struct nfs41_free_stateid_res *res) 6301{ 6302 res->status = decode_op_hdr(xdr, OP_FREE_STATEID); 6303 return res->status; 6304} 6305#else 6306static int decode_get_dir_delegation(struct xdr_stream *xdr, 6307 struct nfs4_getattr_res *res) 6308{ 6309 return 0; 6310} 6311 6312static inline 6313int decode_layoutreturn(struct xdr_stream *xdr, 6314 struct nfs4_layoutreturn_res *res) 6315{ 6316 return 0; 6317} 6318 6319static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 6320 struct nfs4_layoutget_res *res) 6321{ 6322 return 0; 6323} 6324 6325#endif /* CONFIG_NFS_V4_1 */ 6326 6327/* 6328 * END OF "GENERIC" DECODE ROUTINES. 6329 */ 6330 6331/* 6332 * Decode OPEN_DOWNGRADE response 6333 */ 6334static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 6335 struct xdr_stream *xdr, 6336 void *data) 6337{ 6338 struct nfs_closeres *res = data; 6339 struct compound_hdr hdr; 6340 int status; 6341 6342 status = decode_compound_hdr(xdr, &hdr); 6343 if (status) 6344 goto out; 6345 status = decode_sequence(xdr, &res->seq_res, rqstp); 6346 if (status) 6347 goto out; 6348 status = decode_putfh(xdr); 6349 if (status) 6350 goto out; 6351 if (res->lr_res) { 6352 status = decode_layoutreturn(xdr, res->lr_res); 6353 res->lr_ret = status; 6354 if (status) 6355 goto out; 6356 } 6357 status = decode_open_downgrade(xdr, res); 6358out: 6359 return status; 6360} 6361 6362/* 6363 * Decode ACCESS response 6364 */ 6365static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6366 void *data) 6367{ 6368 struct nfs4_accessres *res = data; 6369 struct compound_hdr hdr; 6370 int status; 6371 6372 status = decode_compound_hdr(xdr, &hdr); 6373 if (status) 6374 goto out; 6375 status = decode_sequence(xdr, &res->seq_res, rqstp); 6376 if (status) 6377 goto out; 6378 status = decode_putfh(xdr); 6379 if (status != 0) 6380 goto out; 6381 status = decode_access(xdr, &res->supported, &res->access); 6382 if (status != 0) 6383 goto out; 6384 if (res->fattr) 6385 decode_getfattr(xdr, res->fattr, res->server); 6386out: 6387 return status; 6388} 6389 6390/* 6391 * Decode LOOKUP response 6392 */ 6393static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6394 void *data) 6395{ 6396 struct nfs4_lookup_res *res = data; 6397 struct compound_hdr hdr; 6398 int status; 6399 6400 status = decode_compound_hdr(xdr, &hdr); 6401 if (status) 6402 goto out; 6403 status = decode_sequence(xdr, &res->seq_res, rqstp); 6404 if (status) 6405 goto out; 6406 status = decode_putfh(xdr); 6407 if (status) 6408 goto out; 6409 status = decode_lookup(xdr); 6410 if (status) 6411 goto out; 6412 status = decode_getfh(xdr, res->fh); 6413 if (status) 6414 goto out; 6415 status = decode_getfattr(xdr, res->fattr, res->server); 6416out: 6417 return status; 6418} 6419 6420/* 6421 * Decode LOOKUPP response 6422 */ 6423static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6424 void *data) 6425{ 6426 struct nfs4_lookupp_res *res = data; 6427 struct compound_hdr hdr; 6428 int status; 6429 6430 status = decode_compound_hdr(xdr, &hdr); 6431 if (status) 6432 goto out; 6433 status = decode_sequence(xdr, &res->seq_res, rqstp); 6434 if (status) 6435 goto out; 6436 status = decode_putfh(xdr); 6437 if (status) 6438 goto out; 6439 status = decode_lookupp(xdr); 6440 if (status) 6441 goto out; 6442 status = decode_getfh(xdr, res->fh); 6443 if (status) 6444 goto out; 6445 status = decode_getfattr(xdr, res->fattr, res->server); 6446out: 6447 return status; 6448} 6449 6450/* 6451 * Decode LOOKUP_ROOT response 6452 */ 6453static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6454 struct xdr_stream *xdr, 6455 void *data) 6456{ 6457 struct nfs4_lookup_res *res = data; 6458 struct compound_hdr hdr; 6459 int status; 6460 6461 status = decode_compound_hdr(xdr, &hdr); 6462 if (status) 6463 goto out; 6464 status = decode_sequence(xdr, &res->seq_res, rqstp); 6465 if (status) 6466 goto out; 6467 status = decode_putrootfh(xdr); 6468 if (status) 6469 goto out; 6470 status = decode_getfh(xdr, res->fh); 6471 if (status == 0) 6472 status = decode_getfattr(xdr, res->fattr, res->server); 6473out: 6474 return status; 6475} 6476 6477/* 6478 * Decode REMOVE response 6479 */ 6480static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6481 void *data) 6482{ 6483 struct nfs_removeres *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_remove(xdr, &res->cinfo); 6497out: 6498 return status; 6499} 6500 6501/* 6502 * Decode RENAME response 6503 */ 6504static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6505 void *data) 6506{ 6507 struct nfs_renameres *res = data; 6508 struct compound_hdr hdr; 6509 int status; 6510 6511 status = decode_compound_hdr(xdr, &hdr); 6512 if (status) 6513 goto out; 6514 status = decode_sequence(xdr, &res->seq_res, rqstp); 6515 if (status) 6516 goto out; 6517 status = decode_putfh(xdr); 6518 if (status) 6519 goto out; 6520 status = decode_savefh(xdr); 6521 if (status) 6522 goto out; 6523 status = decode_putfh(xdr); 6524 if (status) 6525 goto out; 6526 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6527out: 6528 return status; 6529} 6530 6531/* 6532 * Decode LINK response 6533 */ 6534static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6535 void *data) 6536{ 6537 struct nfs4_link_res *res = data; 6538 struct compound_hdr hdr; 6539 int status; 6540 6541 status = decode_compound_hdr(xdr, &hdr); 6542 if (status) 6543 goto out; 6544 status = decode_sequence(xdr, &res->seq_res, rqstp); 6545 if (status) 6546 goto out; 6547 status = decode_putfh(xdr); 6548 if (status) 6549 goto out; 6550 status = decode_savefh(xdr); 6551 if (status) 6552 goto out; 6553 status = decode_putfh(xdr); 6554 if (status) 6555 goto out; 6556 status = decode_link(xdr, &res->cinfo); 6557 if (status) 6558 goto out; 6559 /* 6560 * Note order: OP_LINK leaves the directory as the current 6561 * filehandle. 6562 */ 6563 status = decode_restorefh(xdr); 6564 if (status) 6565 goto out; 6566 decode_getfattr(xdr, res->fattr, res->server); 6567out: 6568 return status; 6569} 6570 6571/* 6572 * Decode CREATE response 6573 */ 6574static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6575 void *data) 6576{ 6577 struct nfs4_create_res *res = data; 6578 struct compound_hdr hdr; 6579 int status; 6580 6581 status = decode_compound_hdr(xdr, &hdr); 6582 if (status) 6583 goto out; 6584 status = decode_sequence(xdr, &res->seq_res, rqstp); 6585 if (status) 6586 goto out; 6587 status = decode_putfh(xdr); 6588 if (status) 6589 goto out; 6590 status = decode_create(xdr, &res->dir_cinfo); 6591 if (status) 6592 goto out; 6593 status = decode_getfh(xdr, res->fh); 6594 if (status) 6595 goto out; 6596 decode_getfattr(xdr, res->fattr, res->server); 6597out: 6598 return status; 6599} 6600 6601/* 6602 * Decode SYMLINK response 6603 */ 6604static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6605 void *res) 6606{ 6607 return nfs4_xdr_dec_create(rqstp, xdr, res); 6608} 6609 6610/* 6611 * Decode GETATTR response 6612 */ 6613static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6614 void *data) 6615{ 6616 struct nfs4_getattr_res *res = data; 6617 struct compound_hdr hdr; 6618 int status; 6619 6620 status = decode_compound_hdr(xdr, &hdr); 6621 if (status) 6622 goto out; 6623 status = decode_sequence(xdr, &res->seq_res, rqstp); 6624 if (status) 6625 goto out; 6626 status = decode_putfh(xdr); 6627 if (status) 6628 goto out; 6629 if (res->gdd_res) { 6630 status = decode_get_dir_delegation(xdr, res); 6631 if (status) 6632 goto out; 6633 } 6634 status = decode_getfattr(xdr, res->fattr, res->server); 6635out: 6636 return status; 6637} 6638 6639/* 6640 * Encode an SETACL request 6641 */ 6642static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6643 const void *data) 6644{ 6645 const struct nfs_setaclargs *args = data; 6646 struct compound_hdr hdr = { 6647 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6648 }; 6649 6650 encode_compound_hdr(xdr, req, &hdr); 6651 encode_sequence(xdr, &args->seq_args, &hdr); 6652 encode_putfh(xdr, args->fh, &hdr); 6653 encode_setacl(xdr, args, &hdr); 6654 encode_nops(&hdr); 6655} 6656 6657/* 6658 * Decode SETACL response 6659 */ 6660static int 6661nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6662 void *data) 6663{ 6664 struct nfs_setaclres *res = data; 6665 struct compound_hdr hdr; 6666 int status; 6667 6668 status = decode_compound_hdr(xdr, &hdr); 6669 if (status) 6670 goto out; 6671 status = decode_sequence(xdr, &res->seq_res, rqstp); 6672 if (status) 6673 goto out; 6674 status = decode_putfh(xdr); 6675 if (status) 6676 goto out; 6677 status = decode_setattr(xdr); 6678out: 6679 return status; 6680} 6681 6682/* 6683 * Decode GETACL response 6684 */ 6685static int 6686nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6687 void *data) 6688{ 6689 struct nfs_getaclres *res = data; 6690 struct compound_hdr hdr; 6691 int status; 6692 6693 if (res->acl_scratch != NULL) 6694 xdr_set_scratch_folio(xdr, res->acl_scratch); 6695 status = decode_compound_hdr(xdr, &hdr); 6696 if (status) 6697 goto out; 6698 status = decode_sequence(xdr, &res->seq_res, rqstp); 6699 if (status) 6700 goto out; 6701 status = decode_putfh(xdr); 6702 if (status) 6703 goto out; 6704 status = decode_getacl(xdr, rqstp, res, res->acl_type); 6705 6706out: 6707 return status; 6708} 6709 6710/* 6711 * Decode CLOSE response 6712 */ 6713static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6714 void *data) 6715{ 6716 struct nfs_closeres *res = data; 6717 struct compound_hdr hdr; 6718 int status; 6719 6720 status = decode_compound_hdr(xdr, &hdr); 6721 if (status) 6722 goto out; 6723 status = decode_sequence(xdr, &res->seq_res, rqstp); 6724 if (status) 6725 goto out; 6726 status = decode_putfh(xdr); 6727 if (status) 6728 goto out; 6729 if (res->lr_res) { 6730 status = decode_layoutreturn(xdr, res->lr_res); 6731 res->lr_ret = status; 6732 if (status) 6733 goto out; 6734 } 6735 if (res->fattr != NULL) { 6736 status = decode_getfattr(xdr, res->fattr, res->server); 6737 if (status != 0) 6738 goto out; 6739 } 6740 status = decode_close(xdr, res); 6741out: 6742 return status; 6743} 6744 6745/* 6746 * Decode OPEN response 6747 */ 6748static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6749 void *data) 6750{ 6751 struct nfs_openres *res = data; 6752 struct compound_hdr hdr; 6753 int status; 6754 6755 status = decode_compound_hdr(xdr, &hdr); 6756 if (status) 6757 goto out; 6758 status = decode_sequence(xdr, &res->seq_res, rqstp); 6759 if (status) 6760 goto out; 6761 status = decode_putfh(xdr); 6762 if (status) 6763 goto out; 6764 status = decode_open(xdr, res); 6765 if (status) 6766 goto out; 6767 status = decode_getfh(xdr, &res->fh); 6768 if (status) 6769 goto out; 6770 if (res->access_request) 6771 decode_access(xdr, &res->access_supported, &res->access_result); 6772 decode_getfattr(xdr, res->f_attr, res->server); 6773 if (res->lg_res) 6774 decode_layoutget(xdr, rqstp, res->lg_res); 6775out: 6776 return status; 6777} 6778 6779/* 6780 * Decode OPEN_CONFIRM response 6781 */ 6782static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6783 struct xdr_stream *xdr, 6784 void *data) 6785{ 6786 struct nfs_open_confirmres *res = data; 6787 struct compound_hdr hdr; 6788 int status; 6789 6790 status = decode_compound_hdr(xdr, &hdr); 6791 if (status) 6792 goto out; 6793 status = decode_putfh(xdr); 6794 if (status) 6795 goto out; 6796 status = decode_open_confirm(xdr, res); 6797out: 6798 return status; 6799} 6800 6801/* 6802 * Decode OPEN response 6803 */ 6804static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6805 struct xdr_stream *xdr, 6806 void *data) 6807{ 6808 struct nfs_openres *res = data; 6809 struct compound_hdr hdr; 6810 int status; 6811 6812 status = decode_compound_hdr(xdr, &hdr); 6813 if (status) 6814 goto out; 6815 status = decode_sequence(xdr, &res->seq_res, rqstp); 6816 if (status) 6817 goto out; 6818 status = decode_putfh(xdr); 6819 if (status) 6820 goto out; 6821 status = decode_open(xdr, res); 6822 if (status) 6823 goto out; 6824 if (res->access_request) 6825 decode_access(xdr, &res->access_supported, &res->access_result); 6826 decode_getfattr(xdr, res->f_attr, res->server); 6827 if (res->lg_res) 6828 decode_layoutget(xdr, rqstp, res->lg_res); 6829out: 6830 return status; 6831} 6832 6833/* 6834 * Decode SETATTR response 6835 */ 6836static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6837 struct xdr_stream *xdr, 6838 void *data) 6839{ 6840 struct nfs_setattrres *res = data; 6841 struct compound_hdr hdr; 6842 int status; 6843 6844 status = decode_compound_hdr(xdr, &hdr); 6845 if (status) 6846 goto out; 6847 status = decode_sequence(xdr, &res->seq_res, rqstp); 6848 if (status) 6849 goto out; 6850 status = decode_putfh(xdr); 6851 if (status) 6852 goto out; 6853 status = decode_setattr(xdr); 6854 if (status) 6855 goto out; 6856 decode_getfattr(xdr, res->fattr, res->server); 6857out: 6858 return status; 6859} 6860 6861/* 6862 * Decode LOCK response 6863 */ 6864static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6865 void *data) 6866{ 6867 struct nfs_lock_res *res = data; 6868 struct compound_hdr hdr; 6869 int status; 6870 6871 status = decode_compound_hdr(xdr, &hdr); 6872 if (status) 6873 goto out; 6874 status = decode_sequence(xdr, &res->seq_res, rqstp); 6875 if (status) 6876 goto out; 6877 status = decode_putfh(xdr); 6878 if (status) 6879 goto out; 6880 status = decode_lock(xdr, res); 6881out: 6882 return status; 6883} 6884 6885/* 6886 * Decode LOCKT response 6887 */ 6888static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6889 void *data) 6890{ 6891 struct nfs_lockt_res *res = data; 6892 struct compound_hdr hdr; 6893 int status; 6894 6895 status = decode_compound_hdr(xdr, &hdr); 6896 if (status) 6897 goto out; 6898 status = decode_sequence(xdr, &res->seq_res, rqstp); 6899 if (status) 6900 goto out; 6901 status = decode_putfh(xdr); 6902 if (status) 6903 goto out; 6904 status = decode_lockt(xdr, res); 6905out: 6906 return status; 6907} 6908 6909/* 6910 * Decode LOCKU response 6911 */ 6912static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6913 void *data) 6914{ 6915 struct nfs_locku_res *res = data; 6916 struct compound_hdr hdr; 6917 int status; 6918 6919 status = decode_compound_hdr(xdr, &hdr); 6920 if (status) 6921 goto out; 6922 status = decode_sequence(xdr, &res->seq_res, rqstp); 6923 if (status) 6924 goto out; 6925 status = decode_putfh(xdr); 6926 if (status) 6927 goto out; 6928 status = decode_locku(xdr, res); 6929out: 6930 return status; 6931} 6932 6933static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6934 struct xdr_stream *xdr, void *dummy) 6935{ 6936 struct compound_hdr hdr; 6937 int status; 6938 6939 status = decode_compound_hdr(xdr, &hdr); 6940 if (!status) 6941 status = decode_release_lockowner(xdr); 6942 return status; 6943} 6944 6945/* 6946 * Decode READLINK response 6947 */ 6948static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6949 struct xdr_stream *xdr, 6950 void *data) 6951{ 6952 struct nfs4_readlink_res *res = data; 6953 struct compound_hdr hdr; 6954 int status; 6955 6956 status = decode_compound_hdr(xdr, &hdr); 6957 if (status) 6958 goto out; 6959 status = decode_sequence(xdr, &res->seq_res, rqstp); 6960 if (status) 6961 goto out; 6962 status = decode_putfh(xdr); 6963 if (status) 6964 goto out; 6965 status = decode_readlink(xdr, rqstp); 6966out: 6967 return status; 6968} 6969 6970/* 6971 * Decode READDIR response 6972 */ 6973static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6974 void *data) 6975{ 6976 struct nfs4_readdir_res *res = data; 6977 struct compound_hdr hdr; 6978 int status; 6979 6980 status = decode_compound_hdr(xdr, &hdr); 6981 if (status) 6982 goto out; 6983 status = decode_sequence(xdr, &res->seq_res, rqstp); 6984 if (status) 6985 goto out; 6986 status = decode_putfh(xdr); 6987 if (status) 6988 goto out; 6989 status = decode_readdir(xdr, rqstp, res); 6990out: 6991 return status; 6992} 6993 6994/* 6995 * Decode Read response 6996 */ 6997static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6998 void *data) 6999{ 7000 struct nfs_pgio_res *res = data; 7001 struct compound_hdr hdr; 7002 int status; 7003 7004 status = decode_compound_hdr(xdr, &hdr); 7005 res->op_status = hdr.status; 7006 if (status) 7007 goto out; 7008 status = decode_sequence(xdr, &res->seq_res, rqstp); 7009 if (status) 7010 goto out; 7011 status = decode_putfh(xdr); 7012 if (status) 7013 goto out; 7014 status = decode_read(xdr, rqstp, res); 7015 if (!status) 7016 status = res->count; 7017out: 7018 return status; 7019} 7020 7021/* 7022 * Decode WRITE response 7023 */ 7024static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 7025 void *data) 7026{ 7027 struct nfs_pgio_res *res = data; 7028 struct compound_hdr hdr; 7029 int status; 7030 7031 status = decode_compound_hdr(xdr, &hdr); 7032 res->op_status = hdr.status; 7033 if (status) 7034 goto out; 7035 status = decode_sequence(xdr, &res->seq_res, rqstp); 7036 if (status) 7037 goto out; 7038 status = decode_putfh(xdr); 7039 if (status) 7040 goto out; 7041 status = decode_write(xdr, res); 7042 if (status) 7043 goto out; 7044 if (res->fattr) 7045 decode_getfattr(xdr, res->fattr, res->server); 7046 if (!status) 7047 status = res->count; 7048out: 7049 return status; 7050} 7051 7052/* 7053 * Decode COMMIT response 7054 */ 7055static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 7056 void *data) 7057{ 7058 struct nfs_commitres *res = data; 7059 struct compound_hdr hdr; 7060 int status; 7061 7062 status = decode_compound_hdr(xdr, &hdr); 7063 res->op_status = hdr.status; 7064 if (status) 7065 goto out; 7066 status = decode_sequence(xdr, &res->seq_res, rqstp); 7067 if (status) 7068 goto out; 7069 status = decode_putfh(xdr); 7070 if (status) 7071 goto out; 7072 status = decode_commit(xdr, res); 7073out: 7074 return status; 7075} 7076 7077/* 7078 * Decode FSINFO response 7079 */ 7080static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 7081 void *data) 7082{ 7083 struct nfs4_fsinfo_res *res = data; 7084 struct compound_hdr hdr; 7085 int status; 7086 7087 status = decode_compound_hdr(xdr, &hdr); 7088 if (!status) 7089 status = decode_sequence(xdr, &res->seq_res, req); 7090 if (!status) 7091 status = decode_putfh(xdr); 7092 if (!status) 7093 status = decode_fsinfo(xdr, res->fsinfo); 7094 return status; 7095} 7096 7097/* 7098 * Decode PATHCONF response 7099 */ 7100static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 7101 void *data) 7102{ 7103 struct nfs4_pathconf_res *res = data; 7104 struct compound_hdr hdr; 7105 int status; 7106 7107 status = decode_compound_hdr(xdr, &hdr); 7108 if (!status) 7109 status = decode_sequence(xdr, &res->seq_res, req); 7110 if (!status) 7111 status = decode_putfh(xdr); 7112 if (!status) 7113 status = decode_pathconf(xdr, res->pathconf); 7114 return status; 7115} 7116 7117/* 7118 * Decode STATFS response 7119 */ 7120static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 7121 void *data) 7122{ 7123 struct nfs4_statfs_res *res = data; 7124 struct compound_hdr hdr; 7125 int status; 7126 7127 status = decode_compound_hdr(xdr, &hdr); 7128 if (!status) 7129 status = decode_sequence(xdr, &res->seq_res, req); 7130 if (!status) 7131 status = decode_putfh(xdr); 7132 if (!status) 7133 status = decode_statfs(xdr, res->fsstat); 7134 return status; 7135} 7136 7137/* 7138 * Decode GETATTR_BITMAP response 7139 */ 7140static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 7141 struct xdr_stream *xdr, 7142 void *data) 7143{ 7144 struct nfs4_server_caps_res *res = data; 7145 struct compound_hdr hdr; 7146 int status; 7147 7148 status = decode_compound_hdr(xdr, &hdr); 7149 if (status) 7150 goto out; 7151 status = decode_sequence(xdr, &res->seq_res, req); 7152 if (status) 7153 goto out; 7154 status = decode_putfh(xdr); 7155 if (status) 7156 goto out; 7157 status = decode_server_caps(xdr, res); 7158out: 7159 return status; 7160} 7161 7162/* 7163 * Decode RENEW response 7164 */ 7165static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 7166 void *__unused) 7167{ 7168 struct compound_hdr hdr; 7169 int status; 7170 7171 status = decode_compound_hdr(xdr, &hdr); 7172 if (!status) 7173 status = decode_renew(xdr); 7174 return status; 7175} 7176 7177/* 7178 * Decode SETCLIENTID response 7179 */ 7180static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 7181 struct xdr_stream *xdr, 7182 void *data) 7183{ 7184 struct nfs4_setclientid_res *res = data; 7185 struct compound_hdr hdr; 7186 int status; 7187 7188 status = decode_compound_hdr(xdr, &hdr); 7189 if (!status) 7190 status = decode_setclientid(xdr, res); 7191 return status; 7192} 7193 7194/* 7195 * Decode SETCLIENTID_CONFIRM response 7196 */ 7197static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 7198 struct xdr_stream *xdr, 7199 void *data) 7200{ 7201 struct compound_hdr hdr; 7202 int status; 7203 7204 status = decode_compound_hdr(xdr, &hdr); 7205 if (!status) 7206 status = decode_setclientid_confirm(xdr); 7207 return status; 7208} 7209 7210/* 7211 * Decode DELEGRETURN response 7212 */ 7213static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 7214 struct xdr_stream *xdr, 7215 void *data) 7216{ 7217 struct nfs4_delegreturnres *res = data; 7218 struct compound_hdr hdr; 7219 int status; 7220 7221 status = decode_compound_hdr(xdr, &hdr); 7222 if (status) 7223 goto out; 7224 status = decode_sequence(xdr, &res->seq_res, rqstp); 7225 if (status) 7226 goto out; 7227 status = decode_putfh(xdr); 7228 if (status != 0) 7229 goto out; 7230 if (res->lr_res) { 7231 status = decode_layoutreturn(xdr, res->lr_res); 7232 res->lr_ret = status; 7233 if (status) 7234 goto out; 7235 } 7236 if (res->sattr_res) { 7237 status = decode_delegattr(xdr); 7238 res->sattr_ret = status; 7239 if (status) 7240 goto out; 7241 } 7242 if (res->fattr) { 7243 status = decode_getfattr(xdr, res->fattr, res->server); 7244 if (status != 0) 7245 goto out; 7246 } 7247 status = decode_delegreturn(xdr); 7248out: 7249 return status; 7250} 7251 7252/* 7253 * Decode FS_LOCATIONS response 7254 */ 7255static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 7256 struct xdr_stream *xdr, 7257 void *data) 7258{ 7259 struct nfs4_fs_locations_res *res = data; 7260 struct compound_hdr hdr; 7261 int status; 7262 7263 status = decode_compound_hdr(xdr, &hdr); 7264 if (status) 7265 goto out; 7266 status = decode_sequence(xdr, &res->seq_res, req); 7267 if (status) 7268 goto out; 7269 status = decode_putfh(xdr); 7270 if (status) 7271 goto out; 7272 if (res->migration) { 7273 xdr_enter_page(xdr, PAGE_SIZE); 7274 status = decode_getfattr_generic(xdr, 7275 res->fs_locations->fattr, 7276 NULL, res->fs_locations, 7277 res->fs_locations->server); 7278 if (status) 7279 goto out; 7280 if (res->renew) 7281 status = decode_renew(xdr); 7282 } else { 7283 status = decode_lookup(xdr); 7284 if (status) 7285 goto out; 7286 xdr_enter_page(xdr, PAGE_SIZE); 7287 status = decode_getfattr_generic(xdr, 7288 res->fs_locations->fattr, 7289 NULL, res->fs_locations, 7290 res->fs_locations->server); 7291 } 7292out: 7293 return status; 7294} 7295 7296/* 7297 * Decode SECINFO response 7298 */ 7299static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 7300 struct xdr_stream *xdr, 7301 void *data) 7302{ 7303 struct nfs4_secinfo_res *res = data; 7304 struct compound_hdr hdr; 7305 int status; 7306 7307 status = decode_compound_hdr(xdr, &hdr); 7308 if (status) 7309 goto out; 7310 status = decode_sequence(xdr, &res->seq_res, rqstp); 7311 if (status) 7312 goto out; 7313 status = decode_putfh(xdr); 7314 if (status) 7315 goto out; 7316 status = decode_secinfo(xdr, res); 7317out: 7318 return status; 7319} 7320 7321/* 7322 * Decode FSID_PRESENT response 7323 */ 7324static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp, 7325 struct xdr_stream *xdr, 7326 void *data) 7327{ 7328 struct nfs4_fsid_present_res *res = data; 7329 struct compound_hdr hdr; 7330 int status; 7331 7332 status = decode_compound_hdr(xdr, &hdr); 7333 if (status) 7334 goto out; 7335 status = decode_sequence(xdr, &res->seq_res, rqstp); 7336 if (status) 7337 goto out; 7338 status = decode_putfh(xdr); 7339 if (status) 7340 goto out; 7341 status = decode_getfh(xdr, res->fh); 7342 if (status) 7343 goto out; 7344 if (res->renew) 7345 status = decode_renew(xdr); 7346out: 7347 return status; 7348} 7349 7350#if defined(CONFIG_NFS_V4_1) 7351/* 7352 * Decode BIND_CONN_TO_SESSION response 7353 */ 7354static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 7355 struct xdr_stream *xdr, 7356 void *res) 7357{ 7358 struct compound_hdr hdr; 7359 int status; 7360 7361 status = decode_compound_hdr(xdr, &hdr); 7362 if (!status) 7363 status = decode_bind_conn_to_session(xdr, res); 7364 return status; 7365} 7366 7367/* 7368 * Decode EXCHANGE_ID response 7369 */ 7370static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 7371 struct xdr_stream *xdr, 7372 void *res) 7373{ 7374 struct compound_hdr hdr; 7375 int status; 7376 7377 status = decode_compound_hdr(xdr, &hdr); 7378 if (!status) 7379 status = decode_exchange_id(xdr, res); 7380 return status; 7381} 7382 7383/* 7384 * Decode CREATE_SESSION response 7385 */ 7386static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 7387 struct xdr_stream *xdr, 7388 void *res) 7389{ 7390 struct compound_hdr hdr; 7391 int status; 7392 7393 status = decode_compound_hdr(xdr, &hdr); 7394 if (!status) 7395 status = decode_create_session(xdr, res); 7396 return status; 7397} 7398 7399/* 7400 * Decode DESTROY_SESSION response 7401 */ 7402static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 7403 struct xdr_stream *xdr, 7404 void *res) 7405{ 7406 struct compound_hdr hdr; 7407 int status; 7408 7409 status = decode_compound_hdr(xdr, &hdr); 7410 if (!status) 7411 status = decode_destroy_session(xdr, res); 7412 return status; 7413} 7414 7415/* 7416 * Decode DESTROY_CLIENTID response 7417 */ 7418static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 7419 struct xdr_stream *xdr, 7420 void *res) 7421{ 7422 struct compound_hdr hdr; 7423 int status; 7424 7425 status = decode_compound_hdr(xdr, &hdr); 7426 if (!status) 7427 status = decode_destroy_clientid(xdr, res); 7428 return status; 7429} 7430 7431/* 7432 * Decode SEQUENCE response 7433 */ 7434static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 7435 struct xdr_stream *xdr, 7436 void *res) 7437{ 7438 struct compound_hdr hdr; 7439 int status; 7440 7441 status = decode_compound_hdr(xdr, &hdr); 7442 if (!status) 7443 status = decode_sequence(xdr, res, rqstp); 7444 return status; 7445} 7446 7447#endif 7448 7449/* 7450 * Decode GET_LEASE_TIME response 7451 */ 7452static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 7453 struct xdr_stream *xdr, 7454 void *data) 7455{ 7456 struct nfs4_get_lease_time_res *res = data; 7457 struct compound_hdr hdr; 7458 int status; 7459 7460 status = decode_compound_hdr(xdr, &hdr); 7461 if (!status) 7462 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 7463 if (!status) 7464 status = decode_putrootfh(xdr); 7465 if (!status) 7466 status = decode_fsinfo(xdr, res->lr_fsinfo); 7467 return status; 7468} 7469 7470#ifdef CONFIG_NFS_V4_1 7471 7472/* 7473 * Decode RECLAIM_COMPLETE response 7474 */ 7475static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 7476 struct xdr_stream *xdr, 7477 void *data) 7478{ 7479 struct nfs41_reclaim_complete_res *res = data; 7480 struct compound_hdr hdr; 7481 int status; 7482 7483 status = decode_compound_hdr(xdr, &hdr); 7484 if (!status) 7485 status = decode_sequence(xdr, &res->seq_res, rqstp); 7486 if (!status) 7487 status = decode_reclaim_complete(xdr, NULL); 7488 return status; 7489} 7490 7491/* 7492 * Decode GETDEVINFO response 7493 */ 7494static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7495 struct xdr_stream *xdr, 7496 void *data) 7497{ 7498 struct nfs4_getdeviceinfo_res *res = data; 7499 struct compound_hdr hdr; 7500 int status; 7501 7502 status = decode_compound_hdr(xdr, &hdr); 7503 if (status != 0) 7504 goto out; 7505 status = decode_sequence(xdr, &res->seq_res, rqstp); 7506 if (status != 0) 7507 goto out; 7508 status = decode_getdeviceinfo(xdr, res); 7509out: 7510 return status; 7511} 7512 7513/* 7514 * Decode LAYOUTGET response 7515 */ 7516static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7517 struct xdr_stream *xdr, 7518 void *data) 7519{ 7520 struct nfs4_layoutget_res *res = data; 7521 struct compound_hdr hdr; 7522 int status; 7523 7524 status = decode_compound_hdr(xdr, &hdr); 7525 if (status) 7526 goto out; 7527 status = decode_sequence(xdr, &res->seq_res, rqstp); 7528 if (status) 7529 goto out; 7530 status = decode_putfh(xdr); 7531 if (status) 7532 goto out; 7533 status = decode_layoutget(xdr, rqstp, res); 7534out: 7535 return status; 7536} 7537 7538/* 7539 * Decode LAYOUTRETURN response 7540 */ 7541static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7542 struct xdr_stream *xdr, 7543 void *data) 7544{ 7545 struct nfs4_layoutreturn_res *res = data; 7546 struct compound_hdr hdr; 7547 int status; 7548 7549 status = decode_compound_hdr(xdr, &hdr); 7550 if (status) 7551 goto out; 7552 status = decode_sequence(xdr, &res->seq_res, rqstp); 7553 if (status) 7554 goto out; 7555 status = decode_putfh(xdr); 7556 if (status) 7557 goto out; 7558 status = decode_layoutreturn(xdr, res); 7559out: 7560 return status; 7561} 7562 7563/* 7564 * Decode LAYOUTCOMMIT response 7565 */ 7566static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7567 struct xdr_stream *xdr, 7568 void *data) 7569{ 7570 struct nfs4_layoutcommit_res *res = data; 7571 struct compound_hdr hdr; 7572 int status; 7573 7574 status = decode_compound_hdr(xdr, &hdr); 7575 if (status) 7576 goto out; 7577 status = decode_sequence(xdr, &res->seq_res, rqstp); 7578 if (status) 7579 goto out; 7580 status = decode_putfh(xdr); 7581 if (status) 7582 goto out; 7583 status = decode_layoutcommit(xdr, rqstp, res); 7584 if (status) 7585 goto out; 7586 decode_getfattr(xdr, res->fattr, res->server); 7587out: 7588 return status; 7589} 7590 7591/* 7592 * Decode SECINFO_NO_NAME response 7593 */ 7594static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7595 struct xdr_stream *xdr, 7596 void *data) 7597{ 7598 struct nfs4_secinfo_res *res = data; 7599 struct compound_hdr hdr; 7600 int status; 7601 7602 status = decode_compound_hdr(xdr, &hdr); 7603 if (status) 7604 goto out; 7605 status = decode_sequence(xdr, &res->seq_res, rqstp); 7606 if (status) 7607 goto out; 7608 status = decode_putrootfh(xdr); 7609 if (status) 7610 goto out; 7611 status = decode_secinfo_no_name(xdr, res); 7612out: 7613 return status; 7614} 7615 7616/* 7617 * Decode TEST_STATEID response 7618 */ 7619static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7620 struct xdr_stream *xdr, 7621 void *data) 7622{ 7623 struct nfs41_test_stateid_res *res = data; 7624 struct compound_hdr hdr; 7625 int status; 7626 7627 status = decode_compound_hdr(xdr, &hdr); 7628 if (status) 7629 goto out; 7630 status = decode_sequence(xdr, &res->seq_res, rqstp); 7631 if (status) 7632 goto out; 7633 status = decode_test_stateid(xdr, res); 7634out: 7635 return status; 7636} 7637 7638/* 7639 * Decode FREE_STATEID response 7640 */ 7641static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7642 struct xdr_stream *xdr, 7643 void *data) 7644{ 7645 struct nfs41_free_stateid_res *res = data; 7646 struct compound_hdr hdr; 7647 int status; 7648 7649 status = decode_compound_hdr(xdr, &hdr); 7650 if (status) 7651 goto out; 7652 status = decode_sequence(xdr, &res->seq_res, rqstp); 7653 if (status) 7654 goto out; 7655 status = decode_free_stateid(xdr, res); 7656out: 7657 return status; 7658} 7659#endif /* CONFIG_NFS_V4_1 */ 7660 7661/** 7662 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7663 * the local page cache. 7664 * @xdr: XDR stream where entry resides 7665 * @entry: buffer to fill in with entry data 7666 * @plus: boolean indicating whether this should be a readdirplus entry 7667 * 7668 * Returns zero if successful, otherwise a negative errno value is 7669 * returned. 7670 * 7671 * This function is not invoked during READDIR reply decoding, but 7672 * rather whenever an application invokes the getdents(2) system call 7673 * on a directory already in our cache. 7674 */ 7675int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7676 bool plus) 7677{ 7678 unsigned int savep; 7679 uint32_t bitmap[3] = {0}; 7680 uint32_t len; 7681 uint64_t new_cookie; 7682 __be32 *p = xdr_inline_decode(xdr, 4); 7683 if (unlikely(!p)) 7684 return -EAGAIN; 7685 if (*p == xdr_zero) { 7686 p = xdr_inline_decode(xdr, 4); 7687 if (unlikely(!p)) 7688 return -EAGAIN; 7689 if (*p == xdr_zero) 7690 return -EAGAIN; 7691 entry->eof = 1; 7692 return -EBADCOOKIE; 7693 } 7694 7695 p = xdr_inline_decode(xdr, 12); 7696 if (unlikely(!p)) 7697 return -EAGAIN; 7698 p = xdr_decode_hyper(p, &new_cookie); 7699 entry->len = be32_to_cpup(p); 7700 7701 p = xdr_inline_decode(xdr, entry->len); 7702 if (unlikely(!p)) 7703 return -EAGAIN; 7704 entry->name = (const char *) p; 7705 7706 /* 7707 * In case the server doesn't return an inode number, 7708 * we fake one here. (We don't use inode number 0, 7709 * since glibc seems to choke on it...) 7710 */ 7711 entry->ino = 1; 7712 entry->fattr->valid = 0; 7713 7714 if (decode_attr_bitmap(xdr, bitmap) < 0) 7715 return -EAGAIN; 7716 7717 if (decode_attr_length(xdr, &len, &savep) < 0) 7718 return -EAGAIN; 7719 7720 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7721 NULL, entry->server) < 0) 7722 return -EAGAIN; 7723 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7724 entry->ino = entry->fattr->mounted_on_fileid; 7725 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7726 entry->ino = entry->fattr->fileid; 7727 7728 entry->d_type = DT_UNKNOWN; 7729 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7730 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7731 7732 entry->cookie = new_cookie; 7733 7734 return 0; 7735} 7736 7737#ifdef CONFIG_NFS_V4_2 7738#include "nfs42xdr.c" 7739#endif /* CONFIG_NFS_V4_2 */ 7740 7741#define PROC(proc, argtype, restype) \ 7742[NFSPROC4_CLNT_##proc] = { \ 7743 .p_proc = NFSPROC4_COMPOUND, \ 7744 .p_encode = nfs4_xdr_##argtype, \ 7745 .p_decode = nfs4_xdr_##restype, \ 7746 .p_arglen = NFS4_##argtype##_sz, \ 7747 .p_replen = NFS4_##restype##_sz, \ 7748 .p_statidx = NFSPROC4_CLNT_##proc, \ 7749 .p_name = #proc, \ 7750} 7751 7752#define STUB(proc) \ 7753[NFSPROC4_CLNT_##proc] = { \ 7754 .p_name = #proc, \ 7755} 7756 7757#if defined(CONFIG_NFS_V4_1) 7758#define PROC41(proc, argtype, restype) \ 7759 PROC(proc, argtype, restype) 7760#else 7761#define PROC41(proc, argtype, restype) \ 7762 STUB(proc) 7763#endif 7764 7765#if defined(CONFIG_NFS_V4_2) 7766#define PROC42(proc, argtype, restype) \ 7767 PROC(proc, argtype, restype) 7768#else 7769#define PROC42(proc, argtype, restype) \ 7770 STUB(proc) 7771#endif 7772 7773const struct rpc_procinfo nfs4_procedures[] = { 7774 PROC(READ, enc_read, dec_read), 7775 PROC(WRITE, enc_write, dec_write), 7776 PROC(COMMIT, enc_commit, dec_commit), 7777 PROC(OPEN, enc_open, dec_open), 7778 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7779 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7780 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7781 PROC(CLOSE, enc_close, dec_close), 7782 PROC(SETATTR, enc_setattr, dec_setattr), 7783 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7784 PROC(RENEW, enc_renew, dec_renew), 7785 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7786 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7787 PROC(LOCK, enc_lock, dec_lock), 7788 PROC(LOCKT, enc_lockt, dec_lockt), 7789 PROC(LOCKU, enc_locku, dec_locku), 7790 PROC(ACCESS, enc_access, dec_access), 7791 PROC(GETATTR, enc_getattr, dec_getattr), 7792 PROC(LOOKUP, enc_lookup, dec_lookup), 7793 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7794 PROC(REMOVE, enc_remove, dec_remove), 7795 PROC(RENAME, enc_rename, dec_rename), 7796 PROC(LINK, enc_link, dec_link), 7797 PROC(SYMLINK, enc_symlink, dec_symlink), 7798 PROC(CREATE, enc_create, dec_create), 7799 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7800 PROC(STATFS, enc_statfs, dec_statfs), 7801 PROC(READLINK, enc_readlink, dec_readlink), 7802 PROC(READDIR, enc_readdir, dec_readdir), 7803 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7804 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7805 PROC(GETACL, enc_getacl, dec_getacl), 7806 PROC(SETACL, enc_setacl, dec_setacl), 7807 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7808 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7809 PROC(SECINFO, enc_secinfo, dec_secinfo), 7810 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present), 7811 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7812 PROC41(CREATE_SESSION, enc_create_session, dec_create_session), 7813 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7814 PROC41(SEQUENCE, enc_sequence, dec_sequence), 7815 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7816 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete), 7817 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7818 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget), 7819 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7820 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7821 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7822 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7823 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7824 STUB(GETDEVICELIST), 7825 PROC41(BIND_CONN_TO_SESSION, 7826 enc_bind_conn_to_session, dec_bind_conn_to_session), 7827 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid), 7828 PROC42(SEEK, enc_seek, dec_seek), 7829 PROC42(ALLOCATE, enc_allocate, dec_allocate), 7830 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate), 7831 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats), 7832 PROC42(CLONE, enc_clone, dec_clone), 7833 PROC42(COPY, enc_copy, dec_copy), 7834 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), 7835 PROC42(OFFLOAD_STATUS, enc_offload_status, dec_offload_status), 7836 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), 7837 PROC(LOOKUPP, enc_lookupp, dec_lookupp), 7838 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror), 7839 PROC42(GETXATTR, enc_getxattr, dec_getxattr), 7840 PROC42(SETXATTR, enc_setxattr, dec_setxattr), 7841 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs), 7842 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr), 7843 PROC42(READ_PLUS, enc_read_plus, dec_read_plus), 7844 PROC42(ZERO_RANGE, enc_zero_range, dec_zero_range), 7845}; 7846 7847static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)]; 7848const struct rpc_version nfs_version4 = { 7849 .number = 4, 7850 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7851 .procs = nfs4_procedures, 7852 .counts = nfs_version4_counts, 7853};
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