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1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/module.h>
48#include <linux/utsname.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/sunrpc/msg_prot.h>
51#include <linux/sunrpc/gss_api.h>
52#include <linux/nfs.h>
53#include <linux/nfs4.h>
54#include <linux/nfs_fs.h>
55
56#include "nfs4_fs.h"
57#include "nfs4trace.h"
58#include "internal.h"
59#include "nfs4idmap.h"
60#include "nfs4session.h"
61#include "pnfs.h"
62#include "netns.h"
63
64#define NFSDBG_FACILITY NFSDBG_XDR
65
66/* Mapping from NFS error code to "errno" error code. */
67#define errno_NFSERR_IO EIO
68
69struct compound_hdr;
70static int nfs4_stat_to_errno(int);
71static void encode_layoutget(struct xdr_stream *xdr,
72 const struct nfs4_layoutget_args *args,
73 struct compound_hdr *hdr);
74static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
75 struct nfs4_layoutget_res *res);
76
77/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
78#ifdef DEBUG
79#define NFS4_MAXTAGLEN 20
80#else
81#define NFS4_MAXTAGLEN 0
82#endif
83
84/* lock,open owner id:
85 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
86 */
87#define pagepad_maxsz (1)
88#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
89#define lock_owner_id_maxsz (1 + 1 + 4)
90#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
91#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
92#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
93#define op_encode_hdr_maxsz (1)
94#define op_decode_hdr_maxsz (2)
95#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
96#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
97#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
98#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
99#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
100 (NFS4_FHSIZE >> 2))
101#define decode_putfh_maxsz (op_decode_hdr_maxsz)
102#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
103#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
104#define encode_getfh_maxsz (op_encode_hdr_maxsz)
105#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
106 ((3+NFS4_FHSIZE) >> 2))
107#define nfs4_fattr_bitmap_maxsz 4
108#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
109#define nfstime4_maxsz (3)
110#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
111#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
112#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
113#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
114#ifdef CONFIG_NFS_V4_SECURITY_LABEL
115/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
116#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
117#else
118#define nfs4_label_maxsz 0
119#endif
120/* We support only one layout type per file system */
121#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
122/* This is based on getfattr, which uses the most attributes: */
123#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
124 3*nfstime4_maxsz + \
125 nfs4_owner_maxsz + \
126 nfs4_group_maxsz + nfs4_label_maxsz + \
127 decode_mdsthreshold_maxsz))
128#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
129 nfs4_fattr_value_maxsz)
130#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
131#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
132 1 + 2 + 1 + \
133 nfs4_owner_maxsz + \
134 nfs4_group_maxsz + \
135 nfs4_label_maxsz + \
136 1 + nfstime4_maxsz + \
137 1 + nfstime4_maxsz)
138#define encode_savefh_maxsz (op_encode_hdr_maxsz)
139#define decode_savefh_maxsz (op_decode_hdr_maxsz)
140#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
141#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
142#define encode_fsinfo_maxsz (encode_getattr_maxsz)
143/* The 5 accounts for the PNFS attributes, and assumes that at most three
144 * layout types will be returned.
145 */
146#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
147 nfs4_fattr_bitmap_maxsz + 1 + \
148 1 /* lease time */ + \
149 2 /* max filesize */ + \
150 2 /* max read */ + \
151 2 /* max write */ + \
152 nfstime4_maxsz /* time delta */ + \
153 5 /* fs layout types */ + \
154 1 /* layout blksize */ + \
155 1 /* clone blksize */ + \
156 1 /* change attr type */ + \
157 1 /* xattr support */)
158#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
159#define decode_renew_maxsz (op_decode_hdr_maxsz)
160#define encode_setclientid_maxsz \
161 (op_encode_hdr_maxsz + \
162 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
163 /* client name */ \
164 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
165 1 /* sc_prog */ + \
166 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
167 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
168 1) /* sc_cb_ident */
169#define decode_setclientid_maxsz \
170 (op_decode_hdr_maxsz + \
171 2 /* clientid */ + \
172 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
173 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
174 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
175#define encode_setclientid_confirm_maxsz \
176 (op_encode_hdr_maxsz + \
177 3 + (NFS4_VERIFIER_SIZE >> 2))
178#define decode_setclientid_confirm_maxsz \
179 (op_decode_hdr_maxsz)
180#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
181#define decode_lookup_maxsz (op_decode_hdr_maxsz)
182#define encode_lookupp_maxsz (op_encode_hdr_maxsz)
183#define decode_lookupp_maxsz (op_decode_hdr_maxsz)
184#define encode_share_access_maxsz \
185 (2)
186#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
187#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
188#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
189#define encode_open_maxsz (op_encode_hdr_maxsz + \
190 2 + encode_share_access_maxsz + 2 + \
191 open_owner_id_maxsz + \
192 encode_opentype_maxsz + \
193 encode_claim_null_maxsz)
194#define decode_space_limit_maxsz (3)
195#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
196#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
197 decode_space_limit_maxsz + \
198 decode_ace_maxsz)
199#define decode_change_info_maxsz (5)
200#define decode_open_maxsz (op_decode_hdr_maxsz + \
201 decode_stateid_maxsz + \
202 decode_change_info_maxsz + 1 + \
203 nfs4_fattr_bitmap_maxsz + \
204 decode_delegation_maxsz)
205#define encode_open_confirm_maxsz \
206 (op_encode_hdr_maxsz + \
207 encode_stateid_maxsz + 1)
208#define decode_open_confirm_maxsz \
209 (op_decode_hdr_maxsz + \
210 decode_stateid_maxsz)
211#define encode_open_downgrade_maxsz \
212 (op_encode_hdr_maxsz + \
213 encode_stateid_maxsz + 1 + \
214 encode_share_access_maxsz)
215#define decode_open_downgrade_maxsz \
216 (op_decode_hdr_maxsz + \
217 decode_stateid_maxsz)
218#define encode_close_maxsz (op_encode_hdr_maxsz + \
219 1 + encode_stateid_maxsz)
220#define decode_close_maxsz (op_decode_hdr_maxsz + \
221 decode_stateid_maxsz)
222#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
223 encode_stateid_maxsz + \
224 encode_attrs_maxsz)
225#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
226 nfs4_fattr_bitmap_maxsz)
227#define encode_read_maxsz (op_encode_hdr_maxsz + \
228 encode_stateid_maxsz + 3)
229#define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz)
230#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
231 2 + encode_verifier_maxsz + 5 + \
232 nfs4_label_maxsz)
233#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
234 decode_verifier_maxsz + pagepad_maxsz)
235#define encode_readlink_maxsz (op_encode_hdr_maxsz)
236#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz)
237#define encode_write_maxsz (op_encode_hdr_maxsz + \
238 encode_stateid_maxsz + 4)
239#define decode_write_maxsz (op_decode_hdr_maxsz + \
240 2 + decode_verifier_maxsz)
241#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
242#define decode_commit_maxsz (op_decode_hdr_maxsz + \
243 decode_verifier_maxsz)
244#define encode_remove_maxsz (op_encode_hdr_maxsz + \
245 nfs4_name_maxsz)
246#define decode_remove_maxsz (op_decode_hdr_maxsz + \
247 decode_change_info_maxsz)
248#define encode_rename_maxsz (op_encode_hdr_maxsz + \
249 2 * nfs4_name_maxsz)
250#define decode_rename_maxsz (op_decode_hdr_maxsz + \
251 decode_change_info_maxsz + \
252 decode_change_info_maxsz)
253#define encode_link_maxsz (op_encode_hdr_maxsz + \
254 nfs4_name_maxsz)
255#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
256#define encode_lockowner_maxsz (7)
257#define encode_lock_maxsz (op_encode_hdr_maxsz + \
258 7 + \
259 1 + encode_stateid_maxsz + 1 + \
260 encode_lockowner_maxsz)
261#define decode_lock_denied_maxsz \
262 (8 + decode_lockowner_maxsz)
263#define decode_lock_maxsz (op_decode_hdr_maxsz + \
264 decode_lock_denied_maxsz)
265#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
266 encode_lockowner_maxsz)
267#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
268 decode_lock_denied_maxsz)
269#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
270 encode_stateid_maxsz + \
271 4)
272#define decode_locku_maxsz (op_decode_hdr_maxsz + \
273 decode_stateid_maxsz)
274#define encode_release_lockowner_maxsz \
275 (op_encode_hdr_maxsz + \
276 encode_lockowner_maxsz)
277#define decode_release_lockowner_maxsz \
278 (op_decode_hdr_maxsz)
279#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
280#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
281#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
282 1 + nfs4_name_maxsz + \
283 1 + \
284 nfs4_fattr_maxsz)
285#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
286#define encode_create_maxsz (op_encode_hdr_maxsz + \
287 1 + 2 + nfs4_name_maxsz + \
288 encode_attrs_maxsz)
289#define decode_create_maxsz (op_decode_hdr_maxsz + \
290 decode_change_info_maxsz + \
291 nfs4_fattr_bitmap_maxsz)
292#define encode_statfs_maxsz (encode_getattr_maxsz)
293#define decode_statfs_maxsz (decode_getattr_maxsz)
294#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
295#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
296#define encode_getacl_maxsz (encode_getattr_maxsz)
297#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
298 nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz)
299#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
300 encode_stateid_maxsz + 3)
301#define decode_setacl_maxsz (decode_setattr_maxsz)
302#define encode_fs_locations_maxsz \
303 (encode_getattr_maxsz)
304#define decode_fs_locations_maxsz \
305 (pagepad_maxsz)
306#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
307#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
308
309#if defined(CONFIG_NFS_V4_1)
310#define NFS4_MAX_MACHINE_NAME_LEN (64)
311#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
312 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
313
314#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
315 encode_verifier_maxsz + \
316 1 /* co_ownerid.len */ + \
317 /* eia_clientowner */ \
318 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
319 1 /* flags */ + \
320 1 /* spa_how */ + \
321 /* max is SP4_MACH_CRED (for now) */ + \
322 1 + NFS4_OP_MAP_NUM_WORDS + \
323 1 + NFS4_OP_MAP_NUM_WORDS + \
324 1 /* implementation id array of size 1 */ + \
325 1 /* nii_domain */ + \
326 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
327 1 /* nii_name */ + \
328 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
329 3 /* nii_date */)
330#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
331 2 /* eir_clientid */ + \
332 1 /* eir_sequenceid */ + \
333 1 /* eir_flags */ + \
334 1 /* spr_how */ + \
335 /* max is SP4_MACH_CRED (for now) */ + \
336 1 + NFS4_OP_MAP_NUM_WORDS + \
337 1 + NFS4_OP_MAP_NUM_WORDS + \
338 2 /* eir_server_owner.so_minor_id */ + \
339 /* eir_server_owner.so_major_id<> */ \
340 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
341 /* eir_server_scope<> */ \
342 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
343 1 /* eir_server_impl_id array length */ + \
344 1 /* nii_domain */ + \
345 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
346 1 /* nii_name */ + \
347 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
348 3 /* nii_date */)
349#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
350#define decode_channel_attrs_maxsz (6 + \
351 1 /* ca_rdma_ird.len */ + \
352 1 /* ca_rdma_ird */)
353#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
354 2 /* csa_clientid */ + \
355 1 /* csa_sequence */ + \
356 1 /* csa_flags */ + \
357 encode_channel_attrs_maxsz + \
358 encode_channel_attrs_maxsz + \
359 1 /* csa_cb_program */ + \
360 1 /* csa_sec_parms.len (1) */ + \
361 1 /* cb_secflavor (AUTH_SYS) */ + \
362 1 /* stamp */ + \
363 1 /* machinename.len */ + \
364 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
365 1 /* uid */ + \
366 1 /* gid */ + \
367 1 /* gids.len (0) */)
368#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
369 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
370 1 /* csr_sequence */ + \
371 1 /* csr_flags */ + \
372 decode_channel_attrs_maxsz + \
373 decode_channel_attrs_maxsz)
374#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
375 /* bctsa_sessid */ \
376 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
377 1 /* bctsa_dir */ + \
378 1 /* bctsa_use_conn_in_rdma_mode */)
379#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
380 /* bctsr_sessid */ \
381 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
382 1 /* bctsr_dir */ + \
383 1 /* bctsr_use_conn_in_rdma_mode */)
384#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
385#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
386#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
387#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
388#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
389 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
390#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
392#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
393#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
394#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
395 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
396 1 /* layout type */ + \
397 1 /* maxcount */ + \
398 1 /* bitmap size */ + \
399 1 /* notification bitmap length */ + \
400 1 /* notification bitmap, word 0 */)
401#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
402 1 /* layout type */ + \
403 1 /* opaque devaddr4 length */ + \
404 /* devaddr4 payload is read into page */ \
405 1 /* notification bitmap length */ + \
406 1 /* notification bitmap, word 0 */ + \
407 pagepad_maxsz /* possible XDR padding */)
408#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
409 encode_stateid_maxsz)
410#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
411 decode_stateid_maxsz + \
412 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \
413 pagepad_maxsz)
414#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
415 2 /* offset */ + \
416 2 /* length */ + \
417 1 /* reclaim */ + \
418 encode_stateid_maxsz + \
419 1 /* new offset (true) */ + \
420 2 /* last byte written */ + \
421 1 /* nt_timechanged (false) */ + \
422 1 /* layoutupdate4 layout type */ + \
423 1 /* layoutupdate4 opaqueue len */)
424 /* the actual content of layoutupdate4 should
425 be allocated by drivers and spliced in
426 using xdr_write_pages */
427#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
428#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
429 encode_stateid_maxsz + \
430 1 + \
431 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
432#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
433 1 + decode_stateid_maxsz)
434#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
435#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
436#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
437 XDR_QUADLEN(NFS4_STATEID_SIZE))
438#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
439#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
440 XDR_QUADLEN(NFS4_STATEID_SIZE))
441#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
442#else /* CONFIG_NFS_V4_1 */
443#define encode_sequence_maxsz 0
444#define decode_sequence_maxsz 0
445#define encode_layoutreturn_maxsz 0
446#define decode_layoutreturn_maxsz 0
447#define encode_layoutget_maxsz 0
448#define decode_layoutget_maxsz 0
449#endif /* CONFIG_NFS_V4_1 */
450
451#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
452#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
453#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
454 encode_sequence_maxsz + \
455 encode_putfh_maxsz + \
456 encode_read_maxsz)
457#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
458 decode_sequence_maxsz + \
459 decode_putfh_maxsz + \
460 decode_read_maxsz)
461#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
462 encode_sequence_maxsz + \
463 encode_putfh_maxsz + \
464 encode_readlink_maxsz)
465#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
466 decode_sequence_maxsz + \
467 decode_putfh_maxsz + \
468 decode_readlink_maxsz)
469#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
470 encode_sequence_maxsz + \
471 encode_putfh_maxsz + \
472 encode_readdir_maxsz)
473#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
474 decode_sequence_maxsz + \
475 decode_putfh_maxsz + \
476 decode_readdir_maxsz)
477#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
478 encode_sequence_maxsz + \
479 encode_putfh_maxsz + \
480 encode_write_maxsz + \
481 encode_getattr_maxsz)
482#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
483 decode_sequence_maxsz + \
484 decode_putfh_maxsz + \
485 decode_write_maxsz + \
486 decode_getattr_maxsz)
487#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
488 encode_sequence_maxsz + \
489 encode_putfh_maxsz + \
490 encode_commit_maxsz)
491#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
492 decode_sequence_maxsz + \
493 decode_putfh_maxsz + \
494 decode_commit_maxsz)
495#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
496 encode_sequence_maxsz + \
497 encode_putfh_maxsz + \
498 encode_open_maxsz + \
499 encode_access_maxsz + \
500 encode_getfh_maxsz + \
501 encode_getattr_maxsz + \
502 encode_layoutget_maxsz)
503#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_open_maxsz + \
507 decode_access_maxsz + \
508 decode_getfh_maxsz + \
509 decode_getattr_maxsz + \
510 decode_layoutget_maxsz)
511#define NFS4_enc_open_confirm_sz \
512 (compound_encode_hdr_maxsz + \
513 encode_putfh_maxsz + \
514 encode_open_confirm_maxsz)
515#define NFS4_dec_open_confirm_sz \
516 (compound_decode_hdr_maxsz + \
517 decode_putfh_maxsz + \
518 decode_open_confirm_maxsz)
519#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
520 encode_sequence_maxsz + \
521 encode_putfh_maxsz + \
522 encode_open_maxsz + \
523 encode_access_maxsz + \
524 encode_getattr_maxsz + \
525 encode_layoutget_maxsz)
526#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
527 decode_sequence_maxsz + \
528 decode_putfh_maxsz + \
529 decode_open_maxsz + \
530 decode_access_maxsz + \
531 decode_getattr_maxsz + \
532 decode_layoutget_maxsz)
533#define NFS4_enc_open_downgrade_sz \
534 (compound_encode_hdr_maxsz + \
535 encode_sequence_maxsz + \
536 encode_putfh_maxsz + \
537 encode_layoutreturn_maxsz + \
538 encode_open_downgrade_maxsz)
539#define NFS4_dec_open_downgrade_sz \
540 (compound_decode_hdr_maxsz + \
541 decode_sequence_maxsz + \
542 decode_putfh_maxsz + \
543 decode_layoutreturn_maxsz + \
544 decode_open_downgrade_maxsz)
545#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
546 encode_sequence_maxsz + \
547 encode_putfh_maxsz + \
548 encode_layoutreturn_maxsz + \
549 encode_close_maxsz + \
550 encode_getattr_maxsz)
551#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
552 decode_sequence_maxsz + \
553 decode_putfh_maxsz + \
554 decode_layoutreturn_maxsz + \
555 decode_close_maxsz + \
556 decode_getattr_maxsz)
557#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
558 encode_sequence_maxsz + \
559 encode_putfh_maxsz + \
560 encode_setattr_maxsz + \
561 encode_getattr_maxsz)
562#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
563 decode_sequence_maxsz + \
564 decode_putfh_maxsz + \
565 decode_setattr_maxsz + \
566 decode_getattr_maxsz)
567#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
570 encode_fsinfo_maxsz)
571#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
572 decode_sequence_maxsz + \
573 decode_putfh_maxsz + \
574 decode_fsinfo_maxsz)
575#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
576 encode_renew_maxsz)
577#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
578 decode_renew_maxsz)
579#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
580 encode_setclientid_maxsz)
581#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
582 decode_setclientid_maxsz)
583#define NFS4_enc_setclientid_confirm_sz \
584 (compound_encode_hdr_maxsz + \
585 encode_setclientid_confirm_maxsz)
586#define NFS4_dec_setclientid_confirm_sz \
587 (compound_decode_hdr_maxsz + \
588 decode_setclientid_confirm_maxsz)
589#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_lock_maxsz)
593#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
594 decode_sequence_maxsz + \
595 decode_putfh_maxsz + \
596 decode_lock_maxsz)
597#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
598 encode_sequence_maxsz + \
599 encode_putfh_maxsz + \
600 encode_lockt_maxsz)
601#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
602 decode_sequence_maxsz + \
603 decode_putfh_maxsz + \
604 decode_lockt_maxsz)
605#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
606 encode_sequence_maxsz + \
607 encode_putfh_maxsz + \
608 encode_locku_maxsz)
609#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
610 decode_sequence_maxsz + \
611 decode_putfh_maxsz + \
612 decode_locku_maxsz)
613#define NFS4_enc_release_lockowner_sz \
614 (compound_encode_hdr_maxsz + \
615 encode_lockowner_maxsz)
616#define NFS4_dec_release_lockowner_sz \
617 (compound_decode_hdr_maxsz + \
618 decode_lockowner_maxsz)
619#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putfh_maxsz + \
622 encode_access_maxsz + \
623 encode_getattr_maxsz)
624#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
625 decode_sequence_maxsz + \
626 decode_putfh_maxsz + \
627 decode_access_maxsz + \
628 decode_getattr_maxsz)
629#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_getattr_maxsz + \
633 encode_renew_maxsz)
634#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
635 decode_sequence_maxsz + \
636 decode_putfh_maxsz + \
637 decode_getattr_maxsz + \
638 decode_renew_maxsz)
639#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
640 encode_sequence_maxsz + \
641 encode_putfh_maxsz + \
642 encode_lookup_maxsz + \
643 encode_getattr_maxsz + \
644 encode_getfh_maxsz)
645#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
646 decode_sequence_maxsz + \
647 decode_putfh_maxsz + \
648 decode_lookup_maxsz + \
649 decode_getattr_maxsz + \
650 decode_getfh_maxsz)
651#define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \
652 encode_sequence_maxsz + \
653 encode_putfh_maxsz + \
654 encode_lookupp_maxsz + \
655 encode_getattr_maxsz + \
656 encode_getfh_maxsz)
657#define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \
658 decode_sequence_maxsz + \
659 decode_putfh_maxsz + \
660 decode_lookupp_maxsz + \
661 decode_getattr_maxsz + \
662 decode_getfh_maxsz)
663#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
664 encode_sequence_maxsz + \
665 encode_putrootfh_maxsz + \
666 encode_getattr_maxsz + \
667 encode_getfh_maxsz)
668#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
669 decode_sequence_maxsz + \
670 decode_putrootfh_maxsz + \
671 decode_getattr_maxsz + \
672 decode_getfh_maxsz)
673#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
674 encode_sequence_maxsz + \
675 encode_putfh_maxsz + \
676 encode_remove_maxsz)
677#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
678 decode_sequence_maxsz + \
679 decode_putfh_maxsz + \
680 decode_remove_maxsz)
681#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
682 encode_sequence_maxsz + \
683 encode_putfh_maxsz + \
684 encode_savefh_maxsz + \
685 encode_putfh_maxsz + \
686 encode_rename_maxsz)
687#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
688 decode_sequence_maxsz + \
689 decode_putfh_maxsz + \
690 decode_savefh_maxsz + \
691 decode_putfh_maxsz + \
692 decode_rename_maxsz)
693#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
694 encode_sequence_maxsz + \
695 encode_putfh_maxsz + \
696 encode_savefh_maxsz + \
697 encode_putfh_maxsz + \
698 encode_link_maxsz + \
699 encode_restorefh_maxsz + \
700 encode_getattr_maxsz)
701#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_savefh_maxsz + \
705 decode_putfh_maxsz + \
706 decode_link_maxsz + \
707 decode_restorefh_maxsz + \
708 decode_getattr_maxsz)
709#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
710 encode_sequence_maxsz + \
711 encode_putfh_maxsz + \
712 encode_symlink_maxsz + \
713 encode_getattr_maxsz + \
714 encode_getfh_maxsz)
715#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
716 decode_sequence_maxsz + \
717 decode_putfh_maxsz + \
718 decode_symlink_maxsz + \
719 decode_getattr_maxsz + \
720 decode_getfh_maxsz)
721#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
722 encode_sequence_maxsz + \
723 encode_putfh_maxsz + \
724 encode_create_maxsz + \
725 encode_getfh_maxsz + \
726 encode_getattr_maxsz)
727#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz + \
729 decode_putfh_maxsz + \
730 decode_create_maxsz + \
731 decode_getfh_maxsz + \
732 decode_getattr_maxsz)
733#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
734 encode_sequence_maxsz + \
735 encode_putfh_maxsz + \
736 encode_getattr_maxsz)
737#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_getattr_maxsz)
741#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
742 encode_sequence_maxsz + \
743 encode_putfh_maxsz + \
744 encode_statfs_maxsz)
745#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
746 decode_sequence_maxsz + \
747 decode_putfh_maxsz + \
748 decode_statfs_maxsz)
749#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
750 encode_sequence_maxsz + \
751 encode_putfh_maxsz + \
752 encode_getattr_maxsz)
753#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
754 decode_sequence_maxsz + \
755 decode_putfh_maxsz + \
756 decode_getattr_maxsz)
757#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
758 encode_sequence_maxsz + \
759 encode_putfh_maxsz + \
760 encode_layoutreturn_maxsz + \
761 encode_delegreturn_maxsz + \
762 encode_getattr_maxsz)
763#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
764 decode_sequence_maxsz + \
765 decode_putfh_maxsz + \
766 decode_layoutreturn_maxsz + \
767 decode_delegreturn_maxsz + \
768 decode_getattr_maxsz)
769#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
770 encode_sequence_maxsz + \
771 encode_putfh_maxsz + \
772 encode_getacl_maxsz)
773#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
774 decode_sequence_maxsz + \
775 decode_putfh_maxsz + \
776 decode_getacl_maxsz)
777#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
778 encode_sequence_maxsz + \
779 encode_putfh_maxsz + \
780 encode_setacl_maxsz)
781#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz + \
783 decode_putfh_maxsz + \
784 decode_setacl_maxsz)
785#define NFS4_enc_fs_locations_sz \
786 (compound_encode_hdr_maxsz + \
787 encode_sequence_maxsz + \
788 encode_putfh_maxsz + \
789 encode_lookup_maxsz + \
790 encode_fs_locations_maxsz + \
791 encode_renew_maxsz)
792#define NFS4_dec_fs_locations_sz \
793 (compound_decode_hdr_maxsz + \
794 decode_sequence_maxsz + \
795 decode_putfh_maxsz + \
796 decode_lookup_maxsz + \
797 decode_fs_locations_maxsz + \
798 decode_renew_maxsz)
799#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
800 encode_sequence_maxsz + \
801 encode_putfh_maxsz + \
802 encode_secinfo_maxsz)
803#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
804 decode_sequence_maxsz + \
805 decode_putfh_maxsz + \
806 decode_secinfo_maxsz)
807#define NFS4_enc_fsid_present_sz \
808 (compound_encode_hdr_maxsz + \
809 encode_sequence_maxsz + \
810 encode_putfh_maxsz + \
811 encode_getfh_maxsz + \
812 encode_renew_maxsz)
813#define NFS4_dec_fsid_present_sz \
814 (compound_decode_hdr_maxsz + \
815 decode_sequence_maxsz + \
816 decode_putfh_maxsz + \
817 decode_getfh_maxsz + \
818 decode_renew_maxsz)
819#if defined(CONFIG_NFS_V4_1)
820#define NFS4_enc_bind_conn_to_session_sz \
821 (compound_encode_hdr_maxsz + \
822 encode_bind_conn_to_session_maxsz)
823#define NFS4_dec_bind_conn_to_session_sz \
824 (compound_decode_hdr_maxsz + \
825 decode_bind_conn_to_session_maxsz)
826#define NFS4_enc_exchange_id_sz \
827 (compound_encode_hdr_maxsz + \
828 encode_exchange_id_maxsz)
829#define NFS4_dec_exchange_id_sz \
830 (compound_decode_hdr_maxsz + \
831 decode_exchange_id_maxsz)
832#define NFS4_enc_create_session_sz \
833 (compound_encode_hdr_maxsz + \
834 encode_create_session_maxsz)
835#define NFS4_dec_create_session_sz \
836 (compound_decode_hdr_maxsz + \
837 decode_create_session_maxsz)
838#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
839 encode_destroy_session_maxsz)
840#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
841 decode_destroy_session_maxsz)
842#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
843 encode_destroy_clientid_maxsz)
844#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
845 decode_destroy_clientid_maxsz)
846#define NFS4_enc_sequence_sz \
847 (compound_decode_hdr_maxsz + \
848 encode_sequence_maxsz)
849#define NFS4_dec_sequence_sz \
850 (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz)
852#endif
853#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
854 encode_sequence_maxsz + \
855 encode_putrootfh_maxsz + \
856 encode_fsinfo_maxsz)
857#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
858 decode_sequence_maxsz + \
859 decode_putrootfh_maxsz + \
860 decode_fsinfo_maxsz)
861#if defined(CONFIG_NFS_V4_1)
862#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
863 encode_sequence_maxsz + \
864 encode_reclaim_complete_maxsz)
865#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
866 decode_sequence_maxsz + \
867 decode_reclaim_complete_maxsz)
868#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
869 encode_sequence_maxsz +\
870 encode_getdeviceinfo_maxsz)
871#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
872 decode_sequence_maxsz + \
873 decode_getdeviceinfo_maxsz)
874#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
875 encode_sequence_maxsz + \
876 encode_putfh_maxsz + \
877 encode_layoutget_maxsz)
878#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
879 decode_sequence_maxsz + \
880 decode_putfh_maxsz + \
881 decode_layoutget_maxsz)
882#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
883 encode_sequence_maxsz +\
884 encode_putfh_maxsz + \
885 encode_layoutcommit_maxsz + \
886 encode_getattr_maxsz)
887#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
888 decode_sequence_maxsz + \
889 decode_putfh_maxsz + \
890 decode_layoutcommit_maxsz + \
891 decode_getattr_maxsz)
892#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
893 encode_sequence_maxsz + \
894 encode_putfh_maxsz + \
895 encode_layoutreturn_maxsz)
896#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
897 decode_sequence_maxsz + \
898 decode_putfh_maxsz + \
899 decode_layoutreturn_maxsz)
900#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
901 encode_sequence_maxsz + \
902 encode_putrootfh_maxsz +\
903 encode_secinfo_no_name_maxsz)
904#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
905 decode_sequence_maxsz + \
906 decode_putrootfh_maxsz + \
907 decode_secinfo_no_name_maxsz)
908#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
909 encode_sequence_maxsz + \
910 encode_test_stateid_maxsz)
911#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
912 decode_sequence_maxsz + \
913 decode_test_stateid_maxsz)
914#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
915 encode_sequence_maxsz + \
916 encode_free_stateid_maxsz)
917#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
918 decode_sequence_maxsz + \
919 decode_free_stateid_maxsz)
920
921const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
922 compound_encode_hdr_maxsz +
923 encode_sequence_maxsz +
924 encode_putfh_maxsz +
925 encode_getattr_maxsz) *
926 XDR_UNIT);
927
928const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
929 compound_decode_hdr_maxsz +
930 decode_sequence_maxsz +
931 decode_putfh_maxsz) *
932 XDR_UNIT);
933
934const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
935 compound_decode_hdr_maxsz +
936 decode_sequence_maxsz) *
937 XDR_UNIT);
938EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
939#endif /* CONFIG_NFS_V4_1 */
940
941static const umode_t nfs_type2fmt[] = {
942 [NF4BAD] = 0,
943 [NF4REG] = S_IFREG,
944 [NF4DIR] = S_IFDIR,
945 [NF4BLK] = S_IFBLK,
946 [NF4CHR] = S_IFCHR,
947 [NF4LNK] = S_IFLNK,
948 [NF4SOCK] = S_IFSOCK,
949 [NF4FIFO] = S_IFIFO,
950 [NF4ATTRDIR] = 0,
951 [NF4NAMEDATTR] = 0,
952};
953
954struct compound_hdr {
955 int32_t status;
956 uint32_t nops;
957 __be32 * nops_p;
958 uint32_t taglen;
959 char * tag;
960 uint32_t replen; /* expected reply words */
961 u32 minorversion;
962};
963
964static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
965{
966 __be32 *p = xdr_reserve_space(xdr, nbytes);
967 BUG_ON(!p);
968 return p;
969}
970
971static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
972{
973 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0);
974}
975
976static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
977{
978 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0);
979}
980
981static void encode_uint32(struct xdr_stream *xdr, u32 n)
982{
983 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
984}
985
986static void encode_uint64(struct xdr_stream *xdr, u64 n)
987{
988 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
989}
990
991static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr,
992 const __u32 *bitmap, size_t len)
993{
994 ssize_t ret;
995
996 /* Trim empty words */
997 while (len > 0 && bitmap[len-1] == 0)
998 len--;
999 ret = xdr_stream_encode_uint32_array(xdr, bitmap, len);
1000 if (WARN_ON_ONCE(ret < 0))
1001 return ret;
1002 return len;
1003}
1004
1005static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask,
1006 __u32 *res, size_t len)
1007{
1008 size_t i;
1009 __u32 tmp;
1010
1011 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0))
1012 len--;
1013 for (i = len; i-- > 0;) {
1014 tmp = bitmap[i] & mask[i];
1015 res[i] = tmp;
1016 }
1017 return len;
1018}
1019
1020static void encode_nfs4_seqid(struct xdr_stream *xdr,
1021 const struct nfs_seqid *seqid)
1022{
1023 if (seqid != NULL)
1024 encode_uint32(xdr, seqid->sequence->counter);
1025 else
1026 encode_uint32(xdr, 0);
1027}
1028
1029static void encode_compound_hdr(struct xdr_stream *xdr,
1030 struct rpc_rqst *req,
1031 struct compound_hdr *hdr)
1032{
1033 __be32 *p;
1034
1035 /* initialize running count of expected bytes in reply.
1036 * NOTE: the replied tag SHOULD be the same is the one sent,
1037 * but this is not required as a MUST for the server to do so. */
1038 hdr->replen = 3 + hdr->taglen;
1039
1040 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
1041 encode_string(xdr, hdr->taglen, hdr->tag);
1042 p = reserve_space(xdr, 8);
1043 *p++ = cpu_to_be32(hdr->minorversion);
1044 hdr->nops_p = p;
1045 *p = cpu_to_be32(hdr->nops);
1046}
1047
1048static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
1049 uint32_t replen,
1050 struct compound_hdr *hdr)
1051{
1052 encode_uint32(xdr, op);
1053 hdr->nops++;
1054 hdr->replen += replen;
1055}
1056
1057static void encode_nops(struct compound_hdr *hdr)
1058{
1059 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
1060 *hdr->nops_p = htonl(hdr->nops);
1061}
1062
1063static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1064{
1065 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
1066}
1067
1068static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
1069{
1070 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1071}
1072
1073static __be32 *
1074xdr_encode_nfstime4(__be32 *p, const struct timespec64 *t)
1075{
1076 p = xdr_encode_hyper(p, t->tv_sec);
1077 *p++ = cpu_to_be32(t->tv_nsec);
1078 return p;
1079}
1080
1081static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1082 const struct nfs4_label *label,
1083 const umode_t *umask,
1084 const struct nfs_server *server,
1085 const uint32_t attrmask[])
1086{
1087 char owner_name[IDMAP_NAMESZ];
1088 char owner_group[IDMAP_NAMESZ];
1089 int owner_namelen = 0;
1090 int owner_grouplen = 0;
1091 __be32 *p;
1092 uint32_t len = 0;
1093 uint32_t bmval[3] = { 0 };
1094
1095 /*
1096 * We reserve enough space to write the entire attribute buffer at once.
1097 */
1098 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) {
1099 bmval[0] |= FATTR4_WORD0_SIZE;
1100 len += 8;
1101 }
1102 if (iap->ia_valid & ATTR_MODE) {
1103 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) {
1104 bmval[2] |= FATTR4_WORD2_MODE_UMASK;
1105 len += 8;
1106 } else if (attrmask[1] & FATTR4_WORD1_MODE) {
1107 bmval[1] |= FATTR4_WORD1_MODE;
1108 len += 4;
1109 }
1110 }
1111 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) {
1112 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1113 if (owner_namelen < 0) {
1114 dprintk("nfs: couldn't resolve uid %d to string\n",
1115 from_kuid(&init_user_ns, iap->ia_uid));
1116 /* XXX */
1117 strcpy(owner_name, "nobody");
1118 owner_namelen = sizeof("nobody") - 1;
1119 /* goto out; */
1120 }
1121 bmval[1] |= FATTR4_WORD1_OWNER;
1122 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1123 }
1124 if ((iap->ia_valid & ATTR_GID) &&
1125 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) {
1126 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1127 if (owner_grouplen < 0) {
1128 dprintk("nfs: couldn't resolve gid %d to string\n",
1129 from_kgid(&init_user_ns, iap->ia_gid));
1130 strcpy(owner_group, "nobody");
1131 owner_grouplen = sizeof("nobody") - 1;
1132 /* goto out; */
1133 }
1134 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1135 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1136 }
1137 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1138 if (iap->ia_valid & ATTR_ATIME_SET) {
1139 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1140 len += 4 + (nfstime4_maxsz << 2);
1141 } else if (iap->ia_valid & ATTR_ATIME) {
1142 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1143 len += 4;
1144 }
1145 }
1146 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1147 if (iap->ia_valid & ATTR_MTIME_SET) {
1148 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1149 len += 4 + (nfstime4_maxsz << 2);
1150 } else if (iap->ia_valid & ATTR_MTIME) {
1151 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1152 len += 4;
1153 }
1154 }
1155
1156 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1157 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1158 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1159 }
1160
1161 xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval));
1162 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len);
1163
1164 if (bmval[0] & FATTR4_WORD0_SIZE)
1165 p = xdr_encode_hyper(p, iap->ia_size);
1166 if (bmval[1] & FATTR4_WORD1_MODE)
1167 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1168 if (bmval[1] & FATTR4_WORD1_OWNER)
1169 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1170 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1171 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1172 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1173 if (iap->ia_valid & ATTR_ATIME_SET) {
1174 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1175 p = xdr_encode_nfstime4(p, &iap->ia_atime);
1176 } else
1177 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1178 }
1179 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1180 if (iap->ia_valid & ATTR_MTIME_SET) {
1181 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1182 p = xdr_encode_nfstime4(p, &iap->ia_mtime);
1183 } else
1184 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1185 }
1186 if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1187 *p++ = cpu_to_be32(label->lfs);
1188 *p++ = cpu_to_be32(label->pi);
1189 *p++ = cpu_to_be32(label->len);
1190 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1191 }
1192 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
1193 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1194 *p++ = cpu_to_be32(*umask);
1195 }
1196
1197/* out: */
1198}
1199
1200static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1201{
1202 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1203 encode_uint32(xdr, access);
1204}
1205
1206static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1207{
1208 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1209 encode_nfs4_seqid(xdr, arg->seqid);
1210 encode_nfs4_stateid(xdr, &arg->stateid);
1211}
1212
1213static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1214{
1215 __be32 *p;
1216
1217 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1218 p = reserve_space(xdr, 12);
1219 p = xdr_encode_hyper(p, args->offset);
1220 *p = cpu_to_be32(args->count);
1221}
1222
1223static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1224{
1225 __be32 *p;
1226
1227 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1228 encode_uint32(xdr, create->ftype);
1229
1230 switch (create->ftype) {
1231 case NF4LNK:
1232 p = reserve_space(xdr, 4);
1233 *p = cpu_to_be32(create->u.symlink.len);
1234 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1235 create->u.symlink.len);
1236 xdr->buf->flags |= XDRBUF_WRITE;
1237 break;
1238
1239 case NF4BLK: case NF4CHR:
1240 p = reserve_space(xdr, 8);
1241 *p++ = cpu_to_be32(create->u.device.specdata1);
1242 *p = cpu_to_be32(create->u.device.specdata2);
1243 break;
1244
1245 default:
1246 break;
1247 }
1248
1249 encode_string(xdr, create->name->len, create->name->name);
1250 encode_attrs(xdr, create->attrs, create->label, &create->umask,
1251 create->server, create->server->attr_bitmask);
1252}
1253
1254static void encode_getattr(struct xdr_stream *xdr,
1255 const __u32 *bitmap, const __u32 *mask, size_t len,
1256 struct compound_hdr *hdr)
1257{
1258 __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz];
1259
1260 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1261 if (mask) {
1262 if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap)))
1263 len = ARRAY_SIZE(masked_bitmap);
1264 len = mask_bitmap4(bitmap, mask, masked_bitmap, len);
1265 bitmap = masked_bitmap;
1266 }
1267 xdr_encode_bitmap4(xdr, bitmap, len);
1268}
1269
1270static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1271{
1272 encode_getattr(xdr, nfs4_fattr_bitmap, bitmask,
1273 ARRAY_SIZE(nfs4_fattr_bitmap), hdr);
1274}
1275
1276static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1277 const u32 *open_bitmap,
1278 struct compound_hdr *hdr)
1279{
1280 encode_getattr(xdr, open_bitmap, bitmask, 3, hdr);
1281}
1282
1283static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1284{
1285 encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask,
1286 ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr);
1287}
1288
1289static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1290{
1291 encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask,
1292 ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr);
1293}
1294
1295static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1296{
1297 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1298}
1299
1300static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1301{
1302 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1303 encode_string(xdr, name->len, name->name);
1304}
1305
1306static inline int nfs4_lock_type(struct file_lock *fl, int block)
1307{
1308 if (fl->fl_type == F_RDLCK)
1309 return block ? NFS4_READW_LT : NFS4_READ_LT;
1310 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1311}
1312
1313static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1314{
1315 if (fl->fl_end == OFFSET_MAX)
1316 return ~(uint64_t)0;
1317 return fl->fl_end - fl->fl_start + 1;
1318}
1319
1320static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1321{
1322 __be32 *p;
1323
1324 p = reserve_space(xdr, 32);
1325 p = xdr_encode_hyper(p, lowner->clientid);
1326 *p++ = cpu_to_be32(20);
1327 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1328 *p++ = cpu_to_be32(lowner->s_dev);
1329 xdr_encode_hyper(p, lowner->id);
1330}
1331
1332/*
1333 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1334 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1335 */
1336static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1337{
1338 __be32 *p;
1339
1340 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1341 p = reserve_space(xdr, 28);
1342 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1343 *p++ = cpu_to_be32(args->reclaim);
1344 p = xdr_encode_hyper(p, args->fl->fl_start);
1345 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1346 *p = cpu_to_be32(args->new_lock_owner);
1347 if (args->new_lock_owner){
1348 encode_nfs4_seqid(xdr, args->open_seqid);
1349 encode_nfs4_stateid(xdr, &args->open_stateid);
1350 encode_nfs4_seqid(xdr, args->lock_seqid);
1351 encode_lockowner(xdr, &args->lock_owner);
1352 }
1353 else {
1354 encode_nfs4_stateid(xdr, &args->lock_stateid);
1355 encode_nfs4_seqid(xdr, args->lock_seqid);
1356 }
1357}
1358
1359static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1360{
1361 __be32 *p;
1362
1363 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1364 p = reserve_space(xdr, 20);
1365 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1366 p = xdr_encode_hyper(p, args->fl->fl_start);
1367 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1368 encode_lockowner(xdr, &args->lock_owner);
1369}
1370
1371static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1372{
1373 __be32 *p;
1374
1375 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1376 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1377 encode_nfs4_seqid(xdr, args->seqid);
1378 encode_nfs4_stateid(xdr, &args->stateid);
1379 p = reserve_space(xdr, 16);
1380 p = xdr_encode_hyper(p, args->fl->fl_start);
1381 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1382}
1383
1384static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1385{
1386 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1387 encode_lockowner(xdr, lowner);
1388}
1389
1390static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1391{
1392 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1393 encode_string(xdr, name->len, name->name);
1394}
1395
1396static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr)
1397{
1398 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr);
1399}
1400
1401static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1402{
1403 __be32 *p;
1404
1405 p = reserve_space(xdr, 8);
1406 *p++ = cpu_to_be32(share_access);
1407 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1408}
1409
1410static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1411{
1412 __be32 *p;
1413 /*
1414 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1415 * owner 4 = 32
1416 */
1417 encode_nfs4_seqid(xdr, arg->seqid);
1418 encode_share_access(xdr, arg->share_access);
1419 p = reserve_space(xdr, 36);
1420 p = xdr_encode_hyper(p, arg->clientid);
1421 *p++ = cpu_to_be32(24);
1422 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1423 *p++ = cpu_to_be32(arg->server->s_dev);
1424 *p++ = cpu_to_be32(arg->id.uniquifier);
1425 xdr_encode_hyper(p, arg->id.create_time);
1426}
1427
1428static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1429{
1430 __be32 *p;
1431
1432 p = reserve_space(xdr, 4);
1433 switch(arg->createmode) {
1434 case NFS4_CREATE_UNCHECKED:
1435 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1436 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1437 arg->server, arg->server->attr_bitmask);
1438 break;
1439 case NFS4_CREATE_GUARDED:
1440 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1441 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1442 arg->server, arg->server->attr_bitmask);
1443 break;
1444 case NFS4_CREATE_EXCLUSIVE:
1445 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1446 encode_nfs4_verifier(xdr, &arg->u.verifier);
1447 break;
1448 case NFS4_CREATE_EXCLUSIVE4_1:
1449 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1450 encode_nfs4_verifier(xdr, &arg->u.verifier);
1451 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1452 arg->server, arg->server->exclcreat_bitmask);
1453 }
1454}
1455
1456static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1457{
1458 __be32 *p;
1459
1460 p = reserve_space(xdr, 4);
1461 switch (arg->open_flags & O_CREAT) {
1462 case 0:
1463 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1464 break;
1465 default:
1466 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1467 encode_createmode(xdr, arg);
1468 }
1469}
1470
1471static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1472{
1473 __be32 *p;
1474
1475 p = reserve_space(xdr, 4);
1476 switch (delegation_type) {
1477 case 0:
1478 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1479 break;
1480 case FMODE_READ:
1481 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1482 break;
1483 case FMODE_WRITE|FMODE_READ:
1484 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1485 break;
1486 default:
1487 BUG();
1488 }
1489}
1490
1491static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1492{
1493 __be32 *p;
1494
1495 p = reserve_space(xdr, 4);
1496 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1497 encode_string(xdr, name->len, name->name);
1498}
1499
1500static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1501{
1502 __be32 *p;
1503
1504 p = reserve_space(xdr, 4);
1505 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1506 encode_delegation_type(xdr, type);
1507}
1508
1509static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1510{
1511 __be32 *p;
1512
1513 p = reserve_space(xdr, 4);
1514 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1515 encode_nfs4_stateid(xdr, stateid);
1516 encode_string(xdr, name->len, name->name);
1517}
1518
1519static inline void encode_claim_fh(struct xdr_stream *xdr)
1520{
1521 __be32 *p;
1522
1523 p = reserve_space(xdr, 4);
1524 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1525}
1526
1527static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1528{
1529 __be32 *p;
1530
1531 p = reserve_space(xdr, 4);
1532 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1533 encode_nfs4_stateid(xdr, stateid);
1534}
1535
1536static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1537{
1538 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1539 encode_openhdr(xdr, arg);
1540 encode_opentype(xdr, arg);
1541 switch (arg->claim) {
1542 case NFS4_OPEN_CLAIM_NULL:
1543 encode_claim_null(xdr, arg->name);
1544 break;
1545 case NFS4_OPEN_CLAIM_PREVIOUS:
1546 encode_claim_previous(xdr, arg->u.delegation_type);
1547 break;
1548 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1549 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1550 break;
1551 case NFS4_OPEN_CLAIM_FH:
1552 encode_claim_fh(xdr);
1553 break;
1554 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1555 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1556 break;
1557 default:
1558 BUG();
1559 }
1560}
1561
1562static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1563{
1564 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1565 encode_nfs4_stateid(xdr, arg->stateid);
1566 encode_nfs4_seqid(xdr, arg->seqid);
1567}
1568
1569static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1570{
1571 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1572 encode_nfs4_stateid(xdr, &arg->stateid);
1573 encode_nfs4_seqid(xdr, arg->seqid);
1574 encode_share_access(xdr, arg->share_access);
1575}
1576
1577static void
1578encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1579{
1580 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1581 encode_string(xdr, fh->size, fh->data);
1582}
1583
1584static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1585{
1586 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1587}
1588
1589static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1590 struct compound_hdr *hdr)
1591{
1592 __be32 *p;
1593
1594 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1595 encode_nfs4_stateid(xdr, &args->stateid);
1596
1597 p = reserve_space(xdr, 12);
1598 p = xdr_encode_hyper(p, args->offset);
1599 *p = cpu_to_be32(args->count);
1600}
1601
1602static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1603{
1604 uint32_t attrs[3] = {
1605 FATTR4_WORD0_RDATTR_ERROR,
1606 FATTR4_WORD1_MOUNTED_ON_FILEID,
1607 };
1608 uint32_t dircount = readdir->count;
1609 uint32_t maxcount = readdir->count;
1610 __be32 *p, verf[2];
1611 uint32_t attrlen = 0;
1612 unsigned int i;
1613
1614 if (readdir->plus) {
1615 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1616 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1617 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1618 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1619 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1620 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1621 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1622 }
1623 /* Use mounted_on_fileid only if the server supports it */
1624 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1625 attrs[0] |= FATTR4_WORD0_FILEID;
1626 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1627 attrs[i] &= readdir->bitmask[i];
1628 if (attrs[i] != 0)
1629 attrlen = i+1;
1630 }
1631
1632 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1633 encode_uint64(xdr, readdir->cookie);
1634 encode_nfs4_verifier(xdr, &readdir->verifier);
1635 p = reserve_space(xdr, 12 + (attrlen << 2));
1636 *p++ = cpu_to_be32(dircount);
1637 *p++ = cpu_to_be32(maxcount);
1638 *p++ = cpu_to_be32(attrlen);
1639 for (i = 0; i < attrlen; i++)
1640 *p++ = cpu_to_be32(attrs[i]);
1641 memcpy(verf, readdir->verifier.data, sizeof(verf));
1642
1643 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1644 __func__,
1645 (unsigned long long)readdir->cookie,
1646 verf[0], verf[1],
1647 attrs[0] & readdir->bitmask[0],
1648 attrs[1] & readdir->bitmask[1],
1649 attrs[2] & readdir->bitmask[2]);
1650}
1651
1652static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1653{
1654 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1655}
1656
1657static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1658{
1659 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1660 encode_string(xdr, name->len, name->name);
1661}
1662
1663static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1664{
1665 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1666 encode_string(xdr, oldname->len, oldname->name);
1667 encode_string(xdr, newname->len, newname->name);
1668}
1669
1670static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1671 struct compound_hdr *hdr)
1672{
1673 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1674 encode_uint64(xdr, clid);
1675}
1676
1677static void
1678encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1679{
1680 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1681}
1682
1683static void nfs4_acltype_to_bitmap(enum nfs4_acl_type type, __u32 bitmap[2])
1684{
1685 switch (type) {
1686 default:
1687 bitmap[0] = FATTR4_WORD0_ACL;
1688 bitmap[1] = 0;
1689 break;
1690 case NFS4ACL_DACL:
1691 bitmap[0] = 0;
1692 bitmap[1] = FATTR4_WORD1_DACL;
1693 break;
1694 case NFS4ACL_SACL:
1695 bitmap[0] = 0;
1696 bitmap[1] = FATTR4_WORD1_SACL;
1697 }
1698}
1699
1700static void encode_setacl(struct xdr_stream *xdr,
1701 const struct nfs_setaclargs *arg,
1702 struct compound_hdr *hdr)
1703{
1704 __u32 bitmap[2];
1705
1706 nfs4_acltype_to_bitmap(arg->acl_type, bitmap);
1707
1708 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1709 encode_nfs4_stateid(xdr, &zero_stateid);
1710 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap));
1711 encode_uint32(xdr, arg->acl_len);
1712 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1713}
1714
1715static void
1716encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1717{
1718 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1719}
1720
1721static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1722{
1723 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1724 encode_nfs4_stateid(xdr, &arg->stateid);
1725 encode_attrs(xdr, arg->iap, arg->label, NULL, server,
1726 server->attr_bitmask);
1727}
1728
1729static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1730{
1731 __be32 *p;
1732
1733 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1734 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1735
1736 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1737 setclientid->sc_clnt->cl_owner_id);
1738 p = reserve_space(xdr, 4);
1739 *p = cpu_to_be32(setclientid->sc_prog);
1740 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1741 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1742 p = reserve_space(xdr, 4);
1743 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1744}
1745
1746static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1747{
1748 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1749 decode_setclientid_confirm_maxsz, hdr);
1750 encode_uint64(xdr, arg->clientid);
1751 encode_nfs4_verifier(xdr, &arg->confirm);
1752}
1753
1754static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1755 struct compound_hdr *hdr)
1756{
1757 __be32 *p;
1758
1759 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1760 encode_nfs4_stateid(xdr, &args->stateid);
1761
1762 p = reserve_space(xdr, 16);
1763 p = xdr_encode_hyper(p, args->offset);
1764 *p++ = cpu_to_be32(args->stable);
1765 *p = cpu_to_be32(args->count);
1766
1767 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1768}
1769
1770static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1771{
1772 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1773 encode_nfs4_stateid(xdr, stateid);
1774}
1775
1776static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1777{
1778 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1779 encode_string(xdr, name->len, name->name);
1780}
1781
1782#if defined(CONFIG_NFS_V4_1)
1783/* NFSv4.1 operations */
1784static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1785 const struct nfs41_bind_conn_to_session_args *args,
1786 struct compound_hdr *hdr)
1787{
1788 __be32 *p;
1789
1790 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1791 decode_bind_conn_to_session_maxsz, hdr);
1792 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1793 p = xdr_reserve_space(xdr, 8);
1794 *p++ = cpu_to_be32(args->dir);
1795 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1796}
1797
1798static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map)
1799{
1800 unsigned int i;
1801 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1802 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1803 encode_uint32(xdr, op_map->u.words[i]);
1804}
1805
1806static void encode_exchange_id(struct xdr_stream *xdr,
1807 const struct nfs41_exchange_id_args *args,
1808 struct compound_hdr *hdr)
1809{
1810 __be32 *p;
1811 char impl_name[IMPL_NAME_LIMIT];
1812 int len = 0;
1813
1814 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1815 encode_nfs4_verifier(xdr, &args->verifier);
1816
1817 encode_string(xdr, strlen(args->client->cl_owner_id),
1818 args->client->cl_owner_id);
1819
1820 encode_uint32(xdr, args->flags);
1821 encode_uint32(xdr, args->state_protect.how);
1822
1823 switch (args->state_protect.how) {
1824 case SP4_NONE:
1825 break;
1826 case SP4_MACH_CRED:
1827 encode_op_map(xdr, &args->state_protect.enforce);
1828 encode_op_map(xdr, &args->state_protect.allow);
1829 break;
1830 default:
1831 WARN_ON_ONCE(1);
1832 break;
1833 }
1834
1835 if (send_implementation_id &&
1836 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1837 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1838 <= sizeof(impl_name) + 1)
1839 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1840 utsname()->sysname, utsname()->release,
1841 utsname()->version, utsname()->machine);
1842
1843 if (len > 0) {
1844 encode_uint32(xdr, 1); /* implementation id array length=1 */
1845
1846 encode_string(xdr,
1847 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1848 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1849 encode_string(xdr, len, impl_name);
1850 /* just send zeros for nii_date - the date is in nii_name */
1851 p = reserve_space(xdr, 12);
1852 p = xdr_encode_hyper(p, 0);
1853 *p = cpu_to_be32(0);
1854 } else
1855 encode_uint32(xdr, 0); /* implementation id array length=0 */
1856}
1857
1858static void encode_create_session(struct xdr_stream *xdr,
1859 const struct nfs41_create_session_args *args,
1860 struct compound_hdr *hdr)
1861{
1862 __be32 *p;
1863 struct nfs_client *clp = args->client;
1864 struct rpc_clnt *clnt = clp->cl_rpcclient;
1865 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1866 u32 max_resp_sz_cached;
1867
1868 /*
1869 * Assumes OPEN is the biggest non-idempotent compound.
1870 * 2 is the verifier.
1871 */
1872 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2)
1873 * XDR_UNIT + RPC_MAX_AUTH_SIZE;
1874
1875 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1876 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1877 p = xdr_encode_hyper(p, args->clientid);
1878 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1879 *p++ = cpu_to_be32(args->flags); /*flags */
1880
1881 /* Fore Channel */
1882 *p++ = cpu_to_be32(0); /* header padding size */
1883 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1884 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1885 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1886 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1887 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1888 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1889
1890 /* Back Channel */
1891 *p++ = cpu_to_be32(0); /* header padding size */
1892 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1893 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1894 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1895 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1896 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1897 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1898
1899 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1900 *p++ = cpu_to_be32(1);
1901 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1902
1903 /* authsys_parms rfc1831 */
1904 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1905 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1906 *p++ = cpu_to_be32(0); /* UID */
1907 *p++ = cpu_to_be32(0); /* GID */
1908 *p = cpu_to_be32(0); /* No more gids */
1909}
1910
1911static void encode_destroy_session(struct xdr_stream *xdr,
1912 const struct nfs4_session *session,
1913 struct compound_hdr *hdr)
1914{
1915 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1916 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1917}
1918
1919static void encode_destroy_clientid(struct xdr_stream *xdr,
1920 uint64_t clientid,
1921 struct compound_hdr *hdr)
1922{
1923 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1924 encode_uint64(xdr, clientid);
1925}
1926
1927static void encode_reclaim_complete(struct xdr_stream *xdr,
1928 const struct nfs41_reclaim_complete_args *args,
1929 struct compound_hdr *hdr)
1930{
1931 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1932 encode_uint32(xdr, args->one_fs);
1933}
1934#endif /* CONFIG_NFS_V4_1 */
1935
1936static void encode_sequence(struct xdr_stream *xdr,
1937 const struct nfs4_sequence_args *args,
1938 struct compound_hdr *hdr)
1939{
1940#if defined(CONFIG_NFS_V4_1)
1941 struct nfs4_session *session;
1942 struct nfs4_slot_table *tp;
1943 struct nfs4_slot *slot = args->sa_slot;
1944 __be32 *p;
1945
1946 tp = slot->table;
1947 session = tp->session;
1948 if (!session)
1949 return;
1950
1951 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1952
1953 /*
1954 * Sessionid + seqid + slotid + max slotid + cache_this
1955 */
1956 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1957 "max_slotid=%d cache_this=%d\n",
1958 __func__,
1959 ((u32 *)session->sess_id.data)[0],
1960 ((u32 *)session->sess_id.data)[1],
1961 ((u32 *)session->sess_id.data)[2],
1962 ((u32 *)session->sess_id.data)[3],
1963 slot->seq_nr, slot->slot_nr,
1964 tp->highest_used_slotid, args->sa_cache_this);
1965 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1966 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1967 *p++ = cpu_to_be32(slot->seq_nr);
1968 *p++ = cpu_to_be32(slot->slot_nr);
1969 *p++ = cpu_to_be32(tp->highest_used_slotid);
1970 *p = cpu_to_be32(args->sa_cache_this);
1971#endif /* CONFIG_NFS_V4_1 */
1972}
1973
1974#ifdef CONFIG_NFS_V4_1
1975static void
1976encode_getdeviceinfo(struct xdr_stream *xdr,
1977 const struct nfs4_getdeviceinfo_args *args,
1978 struct compound_hdr *hdr)
1979{
1980 __be32 *p;
1981
1982 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1983 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1984 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1985 NFS4_DEVICEID4_SIZE);
1986 *p++ = cpu_to_be32(args->pdev->layout_type);
1987 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1988
1989 p = reserve_space(xdr, 4 + 4);
1990 *p++ = cpu_to_be32(1); /* bitmap length */
1991 *p++ = cpu_to_be32(args->notify_types);
1992}
1993
1994static void
1995encode_layoutget(struct xdr_stream *xdr,
1996 const struct nfs4_layoutget_args *args,
1997 struct compound_hdr *hdr)
1998{
1999 __be32 *p;
2000
2001 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
2002 p = reserve_space(xdr, 36);
2003 *p++ = cpu_to_be32(0); /* Signal layout available */
2004 *p++ = cpu_to_be32(args->type);
2005 *p++ = cpu_to_be32(args->range.iomode);
2006 p = xdr_encode_hyper(p, args->range.offset);
2007 p = xdr_encode_hyper(p, args->range.length);
2008 p = xdr_encode_hyper(p, args->minlength);
2009 encode_nfs4_stateid(xdr, &args->stateid);
2010 encode_uint32(xdr, args->maxcount);
2011
2012 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
2013 __func__,
2014 args->type,
2015 args->range.iomode,
2016 (unsigned long)args->range.offset,
2017 (unsigned long)args->range.length,
2018 args->maxcount);
2019}
2020
2021static int
2022encode_layoutcommit(struct xdr_stream *xdr,
2023 struct inode *inode,
2024 const struct nfs4_layoutcommit_args *args,
2025 struct compound_hdr *hdr)
2026{
2027 __be32 *p;
2028
2029 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
2030 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
2031
2032 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
2033 p = reserve_space(xdr, 20);
2034 /* Only whole file layouts */
2035 p = xdr_encode_hyper(p, 0); /* offset */
2036 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
2037 *p = cpu_to_be32(0); /* reclaim */
2038 encode_nfs4_stateid(xdr, &args->stateid);
2039 if (args->lastbytewritten != U64_MAX) {
2040 p = reserve_space(xdr, 20);
2041 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
2042 p = xdr_encode_hyper(p, args->lastbytewritten);
2043 } else {
2044 p = reserve_space(xdr, 12);
2045 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2046 }
2047 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2048 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2049
2050 encode_uint32(xdr, args->layoutupdate_len);
2051 if (args->layoutupdate_pages)
2052 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2053 args->layoutupdate_len);
2054
2055 return 0;
2056}
2057
2058static void
2059encode_layoutreturn(struct xdr_stream *xdr,
2060 const struct nfs4_layoutreturn_args *args,
2061 struct compound_hdr *hdr)
2062{
2063 __be32 *p;
2064
2065 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2066 p = reserve_space(xdr, 16);
2067 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2068 *p++ = cpu_to_be32(args->layout_type);
2069 *p++ = cpu_to_be32(args->range.iomode);
2070 *p = cpu_to_be32(RETURN_FILE);
2071 p = reserve_space(xdr, 16);
2072 p = xdr_encode_hyper(p, args->range.offset);
2073 p = xdr_encode_hyper(p, args->range.length);
2074 spin_lock(&args->inode->i_lock);
2075 encode_nfs4_stateid(xdr, &args->stateid);
2076 spin_unlock(&args->inode->i_lock);
2077 if (args->ld_private->ops && args->ld_private->ops->encode)
2078 args->ld_private->ops->encode(xdr, args, args->ld_private);
2079 else
2080 encode_uint32(xdr, 0);
2081}
2082
2083static int
2084encode_secinfo_no_name(struct xdr_stream *xdr,
2085 const struct nfs41_secinfo_no_name_args *args,
2086 struct compound_hdr *hdr)
2087{
2088 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2089 encode_uint32(xdr, args->style);
2090 return 0;
2091}
2092
2093static void encode_test_stateid(struct xdr_stream *xdr,
2094 const struct nfs41_test_stateid_args *args,
2095 struct compound_hdr *hdr)
2096{
2097 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2098 encode_uint32(xdr, 1);
2099 encode_nfs4_stateid(xdr, args->stateid);
2100}
2101
2102static void encode_free_stateid(struct xdr_stream *xdr,
2103 const struct nfs41_free_stateid_args *args,
2104 struct compound_hdr *hdr)
2105{
2106 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2107 encode_nfs4_stateid(xdr, &args->stateid);
2108}
2109#else
2110static inline void
2111encode_layoutreturn(struct xdr_stream *xdr,
2112 const struct nfs4_layoutreturn_args *args,
2113 struct compound_hdr *hdr)
2114{
2115}
2116
2117static void
2118encode_layoutget(struct xdr_stream *xdr,
2119 const struct nfs4_layoutget_args *args,
2120 struct compound_hdr *hdr)
2121{
2122}
2123#endif /* CONFIG_NFS_V4_1 */
2124
2125/*
2126 * END OF "GENERIC" ENCODE ROUTINES.
2127 */
2128
2129static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2130{
2131#if defined(CONFIG_NFS_V4_1)
2132 struct nfs4_session *session = args->sa_slot->table->session;
2133 if (session)
2134 return session->clp->cl_mvops->minor_version;
2135#endif /* CONFIG_NFS_V4_1 */
2136 return 0;
2137}
2138
2139/*
2140 * Encode an ACCESS request
2141 */
2142static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2143 const void *data)
2144{
2145 const struct nfs4_accessargs *args = data;
2146 struct compound_hdr hdr = {
2147 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2148 };
2149
2150 encode_compound_hdr(xdr, req, &hdr);
2151 encode_sequence(xdr, &args->seq_args, &hdr);
2152 encode_putfh(xdr, args->fh, &hdr);
2153 encode_access(xdr, args->access, &hdr);
2154 if (args->bitmask)
2155 encode_getfattr(xdr, args->bitmask, &hdr);
2156 encode_nops(&hdr);
2157}
2158
2159/*
2160 * Encode LOOKUP request
2161 */
2162static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2163 const void *data)
2164{
2165 const struct nfs4_lookup_arg *args = data;
2166 struct compound_hdr hdr = {
2167 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2168 };
2169
2170 encode_compound_hdr(xdr, req, &hdr);
2171 encode_sequence(xdr, &args->seq_args, &hdr);
2172 encode_putfh(xdr, args->dir_fh, &hdr);
2173 encode_lookup(xdr, args->name, &hdr);
2174 encode_getfh(xdr, &hdr);
2175 encode_getfattr(xdr, args->bitmask, &hdr);
2176 encode_nops(&hdr);
2177}
2178
2179/*
2180 * Encode LOOKUPP request
2181 */
2182static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr,
2183 const void *data)
2184{
2185 const struct nfs4_lookupp_arg *args = data;
2186 struct compound_hdr hdr = {
2187 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2188 };
2189
2190 encode_compound_hdr(xdr, req, &hdr);
2191 encode_sequence(xdr, &args->seq_args, &hdr);
2192 encode_putfh(xdr, args->fh, &hdr);
2193 encode_lookupp(xdr, &hdr);
2194 encode_getfh(xdr, &hdr);
2195 encode_getfattr(xdr, args->bitmask, &hdr);
2196 encode_nops(&hdr);
2197}
2198
2199/*
2200 * Encode LOOKUP_ROOT request
2201 */
2202static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2203 struct xdr_stream *xdr,
2204 const void *data)
2205{
2206 const struct nfs4_lookup_root_arg *args = data;
2207 struct compound_hdr hdr = {
2208 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2209 };
2210
2211 encode_compound_hdr(xdr, req, &hdr);
2212 encode_sequence(xdr, &args->seq_args, &hdr);
2213 encode_putrootfh(xdr, &hdr);
2214 encode_getfh(xdr, &hdr);
2215 encode_getfattr(xdr, args->bitmask, &hdr);
2216 encode_nops(&hdr);
2217}
2218
2219/*
2220 * Encode REMOVE request
2221 */
2222static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2223 const void *data)
2224{
2225 const struct nfs_removeargs *args = data;
2226 struct compound_hdr hdr = {
2227 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2228 };
2229
2230 encode_compound_hdr(xdr, req, &hdr);
2231 encode_sequence(xdr, &args->seq_args, &hdr);
2232 encode_putfh(xdr, args->fh, &hdr);
2233 encode_remove(xdr, &args->name, &hdr);
2234 encode_nops(&hdr);
2235}
2236
2237/*
2238 * Encode RENAME request
2239 */
2240static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2241 const void *data)
2242{
2243 const struct nfs_renameargs *args = data;
2244 struct compound_hdr hdr = {
2245 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2246 };
2247
2248 encode_compound_hdr(xdr, req, &hdr);
2249 encode_sequence(xdr, &args->seq_args, &hdr);
2250 encode_putfh(xdr, args->old_dir, &hdr);
2251 encode_savefh(xdr, &hdr);
2252 encode_putfh(xdr, args->new_dir, &hdr);
2253 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2254 encode_nops(&hdr);
2255}
2256
2257/*
2258 * Encode LINK request
2259 */
2260static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2261 const void *data)
2262{
2263 const struct nfs4_link_arg *args = data;
2264 struct compound_hdr hdr = {
2265 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2266 };
2267
2268 encode_compound_hdr(xdr, req, &hdr);
2269 encode_sequence(xdr, &args->seq_args, &hdr);
2270 encode_putfh(xdr, args->fh, &hdr);
2271 encode_savefh(xdr, &hdr);
2272 encode_putfh(xdr, args->dir_fh, &hdr);
2273 encode_link(xdr, args->name, &hdr);
2274 encode_restorefh(xdr, &hdr);
2275 encode_getfattr(xdr, args->bitmask, &hdr);
2276 encode_nops(&hdr);
2277}
2278
2279/*
2280 * Encode CREATE request
2281 */
2282static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2283 const void *data)
2284{
2285 const struct nfs4_create_arg *args = data;
2286 struct compound_hdr hdr = {
2287 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2288 };
2289
2290 encode_compound_hdr(xdr, req, &hdr);
2291 encode_sequence(xdr, &args->seq_args, &hdr);
2292 encode_putfh(xdr, args->dir_fh, &hdr);
2293 encode_create(xdr, args, &hdr);
2294 encode_getfh(xdr, &hdr);
2295 encode_getfattr(xdr, args->bitmask, &hdr);
2296 encode_nops(&hdr);
2297}
2298
2299/*
2300 * Encode SYMLINK request
2301 */
2302static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2303 const void *data)
2304{
2305 const struct nfs4_create_arg *args = data;
2306
2307 nfs4_xdr_enc_create(req, xdr, args);
2308}
2309
2310/*
2311 * Encode GETATTR request
2312 */
2313static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2314 const void *data)
2315{
2316 const struct nfs4_getattr_arg *args = data;
2317 struct compound_hdr hdr = {
2318 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2319 };
2320
2321 encode_compound_hdr(xdr, req, &hdr);
2322 encode_sequence(xdr, &args->seq_args, &hdr);
2323 encode_putfh(xdr, args->fh, &hdr);
2324 encode_getfattr(xdr, args->bitmask, &hdr);
2325 encode_nops(&hdr);
2326}
2327
2328/*
2329 * Encode a CLOSE request
2330 */
2331static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2332 const void *data)
2333{
2334 const struct nfs_closeargs *args = data;
2335 struct compound_hdr hdr = {
2336 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2337 };
2338
2339 encode_compound_hdr(xdr, req, &hdr);
2340 encode_sequence(xdr, &args->seq_args, &hdr);
2341 encode_putfh(xdr, args->fh, &hdr);
2342 if (args->lr_args)
2343 encode_layoutreturn(xdr, args->lr_args, &hdr);
2344 if (args->bitmask != NULL)
2345 encode_getfattr(xdr, args->bitmask, &hdr);
2346 encode_close(xdr, args, &hdr);
2347 encode_nops(&hdr);
2348}
2349
2350/*
2351 * Encode an OPEN request
2352 */
2353static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2354 const void *data)
2355{
2356 const struct nfs_openargs *args = data;
2357 struct compound_hdr hdr = {
2358 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2359 };
2360
2361 encode_compound_hdr(xdr, req, &hdr);
2362 encode_sequence(xdr, &args->seq_args, &hdr);
2363 encode_putfh(xdr, args->fh, &hdr);
2364 encode_open(xdr, args, &hdr);
2365 encode_getfh(xdr, &hdr);
2366 if (args->access)
2367 encode_access(xdr, args->access, &hdr);
2368 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2369 if (args->lg_args) {
2370 encode_layoutget(xdr, args->lg_args, &hdr);
2371 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2372 args->lg_args->layout.pglen,
2373 hdr.replen - pagepad_maxsz);
2374 }
2375 encode_nops(&hdr);
2376}
2377
2378/*
2379 * Encode an OPEN_CONFIRM request
2380 */
2381static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2382 struct xdr_stream *xdr,
2383 const void *data)
2384{
2385 const struct nfs_open_confirmargs *args = data;
2386 struct compound_hdr hdr = {
2387 .nops = 0,
2388 };
2389
2390 encode_compound_hdr(xdr, req, &hdr);
2391 encode_putfh(xdr, args->fh, &hdr);
2392 encode_open_confirm(xdr, args, &hdr);
2393 encode_nops(&hdr);
2394}
2395
2396/*
2397 * Encode an OPEN request with no attributes.
2398 */
2399static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2400 struct xdr_stream *xdr,
2401 const void *data)
2402{
2403 const struct nfs_openargs *args = data;
2404 struct compound_hdr hdr = {
2405 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2406 };
2407
2408 encode_compound_hdr(xdr, req, &hdr);
2409 encode_sequence(xdr, &args->seq_args, &hdr);
2410 encode_putfh(xdr, args->fh, &hdr);
2411 encode_open(xdr, args, &hdr);
2412 if (args->access)
2413 encode_access(xdr, args->access, &hdr);
2414 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2415 if (args->lg_args) {
2416 encode_layoutget(xdr, args->lg_args, &hdr);
2417 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2418 args->lg_args->layout.pglen,
2419 hdr.replen - pagepad_maxsz);
2420 }
2421 encode_nops(&hdr);
2422}
2423
2424/*
2425 * Encode an OPEN_DOWNGRADE request
2426 */
2427static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2428 struct xdr_stream *xdr,
2429 const void *data)
2430{
2431 const struct nfs_closeargs *args = data;
2432 struct compound_hdr hdr = {
2433 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2434 };
2435
2436 encode_compound_hdr(xdr, req, &hdr);
2437 encode_sequence(xdr, &args->seq_args, &hdr);
2438 encode_putfh(xdr, args->fh, &hdr);
2439 if (args->lr_args)
2440 encode_layoutreturn(xdr, args->lr_args, &hdr);
2441 encode_open_downgrade(xdr, args, &hdr);
2442 encode_nops(&hdr);
2443}
2444
2445/*
2446 * Encode a LOCK request
2447 */
2448static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2449 const void *data)
2450{
2451 const struct nfs_lock_args *args = data;
2452 struct compound_hdr hdr = {
2453 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2454 };
2455
2456 encode_compound_hdr(xdr, req, &hdr);
2457 encode_sequence(xdr, &args->seq_args, &hdr);
2458 encode_putfh(xdr, args->fh, &hdr);
2459 encode_lock(xdr, args, &hdr);
2460 encode_nops(&hdr);
2461}
2462
2463/*
2464 * Encode a LOCKT request
2465 */
2466static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2467 const void *data)
2468{
2469 const struct nfs_lockt_args *args = data;
2470 struct compound_hdr hdr = {
2471 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2472 };
2473
2474 encode_compound_hdr(xdr, req, &hdr);
2475 encode_sequence(xdr, &args->seq_args, &hdr);
2476 encode_putfh(xdr, args->fh, &hdr);
2477 encode_lockt(xdr, args, &hdr);
2478 encode_nops(&hdr);
2479}
2480
2481/*
2482 * Encode a LOCKU request
2483 */
2484static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2485 const void *data)
2486{
2487 const struct nfs_locku_args *args = data;
2488 struct compound_hdr hdr = {
2489 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2490 };
2491
2492 encode_compound_hdr(xdr, req, &hdr);
2493 encode_sequence(xdr, &args->seq_args, &hdr);
2494 encode_putfh(xdr, args->fh, &hdr);
2495 encode_locku(xdr, args, &hdr);
2496 encode_nops(&hdr);
2497}
2498
2499static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2500 struct xdr_stream *xdr,
2501 const void *data)
2502{
2503 const struct nfs_release_lockowner_args *args = data;
2504 struct compound_hdr hdr = {
2505 .minorversion = 0,
2506 };
2507
2508 encode_compound_hdr(xdr, req, &hdr);
2509 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2510 encode_nops(&hdr);
2511}
2512
2513/*
2514 * Encode a READLINK request
2515 */
2516static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2517 const void *data)
2518{
2519 const struct nfs4_readlink *args = data;
2520 struct compound_hdr hdr = {
2521 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2522 };
2523
2524 encode_compound_hdr(xdr, req, &hdr);
2525 encode_sequence(xdr, &args->seq_args, &hdr);
2526 encode_putfh(xdr, args->fh, &hdr);
2527 encode_readlink(xdr, args, req, &hdr);
2528
2529 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2530 args->pglen, hdr.replen - pagepad_maxsz);
2531 encode_nops(&hdr);
2532}
2533
2534/*
2535 * Encode a READDIR request
2536 */
2537static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2538 const void *data)
2539{
2540 const struct nfs4_readdir_arg *args = data;
2541 struct compound_hdr hdr = {
2542 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2543 };
2544
2545 encode_compound_hdr(xdr, req, &hdr);
2546 encode_sequence(xdr, &args->seq_args, &hdr);
2547 encode_putfh(xdr, args->fh, &hdr);
2548 encode_readdir(xdr, args, req, &hdr);
2549
2550 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2551 args->count, hdr.replen - pagepad_maxsz);
2552 encode_nops(&hdr);
2553}
2554
2555/*
2556 * Encode a READ request
2557 */
2558static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2559 const void *data)
2560{
2561 const struct nfs_pgio_args *args = data;
2562 struct compound_hdr hdr = {
2563 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2564 };
2565
2566 encode_compound_hdr(xdr, req, &hdr);
2567 encode_sequence(xdr, &args->seq_args, &hdr);
2568 encode_putfh(xdr, args->fh, &hdr);
2569 encode_read(xdr, args, &hdr);
2570
2571 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2572 args->count, hdr.replen - pagepad_maxsz);
2573 req->rq_rcv_buf.flags |= XDRBUF_READ;
2574 encode_nops(&hdr);
2575}
2576
2577/*
2578 * Encode an SETATTR request
2579 */
2580static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2581 const void *data)
2582{
2583 const struct nfs_setattrargs *args = data;
2584 struct compound_hdr hdr = {
2585 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2586 };
2587
2588 encode_compound_hdr(xdr, req, &hdr);
2589 encode_sequence(xdr, &args->seq_args, &hdr);
2590 encode_putfh(xdr, args->fh, &hdr);
2591 encode_setattr(xdr, args, args->server, &hdr);
2592 encode_getfattr(xdr, args->bitmask, &hdr);
2593 encode_nops(&hdr);
2594}
2595
2596/*
2597 * Encode a GETACL request
2598 */
2599static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2600 const void *data)
2601{
2602 const struct nfs_getaclargs *args = data;
2603 struct compound_hdr hdr = {
2604 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2605 };
2606 __u32 nfs4_acl_bitmap[2];
2607 uint32_t replen;
2608
2609 nfs4_acltype_to_bitmap(args->acl_type, nfs4_acl_bitmap);
2610
2611 encode_compound_hdr(xdr, req, &hdr);
2612 encode_sequence(xdr, &args->seq_args, &hdr);
2613 encode_putfh(xdr, args->fh, &hdr);
2614 replen = hdr.replen + op_decode_hdr_maxsz;
2615 encode_getattr(xdr, nfs4_acl_bitmap, NULL,
2616 ARRAY_SIZE(nfs4_acl_bitmap), &hdr);
2617
2618 rpc_prepare_reply_pages(req, args->acl_pages, 0,
2619 args->acl_len, replen);
2620 encode_nops(&hdr);
2621}
2622
2623/*
2624 * Encode a WRITE request
2625 */
2626static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2627 const void *data)
2628{
2629 const struct nfs_pgio_args *args = data;
2630 struct compound_hdr hdr = {
2631 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2632 };
2633
2634 encode_compound_hdr(xdr, req, &hdr);
2635 encode_sequence(xdr, &args->seq_args, &hdr);
2636 encode_putfh(xdr, args->fh, &hdr);
2637 encode_write(xdr, args, &hdr);
2638 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2639 if (args->bitmask)
2640 encode_getfattr(xdr, args->bitmask, &hdr);
2641 encode_nops(&hdr);
2642}
2643
2644/*
2645 * a COMMIT request
2646 */
2647static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2648 const void *data)
2649{
2650 const struct nfs_commitargs *args = data;
2651 struct compound_hdr hdr = {
2652 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2653 };
2654
2655 encode_compound_hdr(xdr, req, &hdr);
2656 encode_sequence(xdr, &args->seq_args, &hdr);
2657 encode_putfh(xdr, args->fh, &hdr);
2658 encode_commit(xdr, args, &hdr);
2659 encode_nops(&hdr);
2660}
2661
2662/*
2663 * FSINFO request
2664 */
2665static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2666 const void *data)
2667{
2668 const struct nfs4_fsinfo_arg *args = data;
2669 struct compound_hdr hdr = {
2670 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2671 };
2672
2673 encode_compound_hdr(xdr, req, &hdr);
2674 encode_sequence(xdr, &args->seq_args, &hdr);
2675 encode_putfh(xdr, args->fh, &hdr);
2676 encode_fsinfo(xdr, args->bitmask, &hdr);
2677 encode_nops(&hdr);
2678}
2679
2680/*
2681 * a PATHCONF request
2682 */
2683static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2684 const void *data)
2685{
2686 const struct nfs4_pathconf_arg *args = data;
2687 struct compound_hdr hdr = {
2688 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2689 };
2690
2691 encode_compound_hdr(xdr, req, &hdr);
2692 encode_sequence(xdr, &args->seq_args, &hdr);
2693 encode_putfh(xdr, args->fh, &hdr);
2694 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask,
2695 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr);
2696 encode_nops(&hdr);
2697}
2698
2699/*
2700 * a STATFS request
2701 */
2702static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2703 const void *data)
2704{
2705 const struct nfs4_statfs_arg *args = data;
2706 struct compound_hdr hdr = {
2707 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2708 };
2709
2710 encode_compound_hdr(xdr, req, &hdr);
2711 encode_sequence(xdr, &args->seq_args, &hdr);
2712 encode_putfh(xdr, args->fh, &hdr);
2713 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask,
2714 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr);
2715 encode_nops(&hdr);
2716}
2717
2718/*
2719 * GETATTR_BITMAP request
2720 */
2721static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2722 struct xdr_stream *xdr,
2723 const void *data)
2724{
2725 const struct nfs4_server_caps_arg *args = data;
2726 const u32 *bitmask = args->bitmask;
2727 struct compound_hdr hdr = {
2728 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2729 };
2730
2731 encode_compound_hdr(xdr, req, &hdr);
2732 encode_sequence(xdr, &args->seq_args, &hdr);
2733 encode_putfh(xdr, args->fhandle, &hdr);
2734 encode_getattr(xdr, bitmask, NULL, 3, &hdr);
2735 encode_nops(&hdr);
2736}
2737
2738/*
2739 * a RENEW request
2740 */
2741static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2742 const void *data)
2743
2744{
2745 const struct nfs_client *clp = data;
2746 struct compound_hdr hdr = {
2747 .nops = 0,
2748 };
2749
2750 encode_compound_hdr(xdr, req, &hdr);
2751 encode_renew(xdr, clp->cl_clientid, &hdr);
2752 encode_nops(&hdr);
2753}
2754
2755/*
2756 * a SETCLIENTID request
2757 */
2758static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2759 struct xdr_stream *xdr,
2760 const void *data)
2761{
2762 const struct nfs4_setclientid *sc = data;
2763 struct compound_hdr hdr = {
2764 .nops = 0,
2765 };
2766
2767 encode_compound_hdr(xdr, req, &hdr);
2768 encode_setclientid(xdr, sc, &hdr);
2769 encode_nops(&hdr);
2770}
2771
2772/*
2773 * a SETCLIENTID_CONFIRM request
2774 */
2775static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2776 struct xdr_stream *xdr,
2777 const void *data)
2778{
2779 const struct nfs4_setclientid_res *arg = data;
2780 struct compound_hdr hdr = {
2781 .nops = 0,
2782 };
2783
2784 encode_compound_hdr(xdr, req, &hdr);
2785 encode_setclientid_confirm(xdr, arg, &hdr);
2786 encode_nops(&hdr);
2787}
2788
2789/*
2790 * DELEGRETURN request
2791 */
2792static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2793 struct xdr_stream *xdr,
2794 const void *data)
2795{
2796 const struct nfs4_delegreturnargs *args = data;
2797 struct compound_hdr hdr = {
2798 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2799 };
2800
2801 encode_compound_hdr(xdr, req, &hdr);
2802 encode_sequence(xdr, &args->seq_args, &hdr);
2803 encode_putfh(xdr, args->fhandle, &hdr);
2804 if (args->lr_args)
2805 encode_layoutreturn(xdr, args->lr_args, &hdr);
2806 if (args->bitmask)
2807 encode_getfattr(xdr, args->bitmask, &hdr);
2808 encode_delegreturn(xdr, args->stateid, &hdr);
2809 encode_nops(&hdr);
2810}
2811
2812/*
2813 * Encode FS_LOCATIONS request
2814 */
2815static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2816 struct xdr_stream *xdr,
2817 const void *data)
2818{
2819 const struct nfs4_fs_locations_arg *args = data;
2820 struct compound_hdr hdr = {
2821 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2822 };
2823 uint32_t replen;
2824
2825 encode_compound_hdr(xdr, req, &hdr);
2826 encode_sequence(xdr, &args->seq_args, &hdr);
2827 if (args->migration) {
2828 encode_putfh(xdr, args->fh, &hdr);
2829 replen = hdr.replen;
2830 encode_fs_locations(xdr, args->bitmask, &hdr);
2831 if (args->renew)
2832 encode_renew(xdr, args->clientid, &hdr);
2833 } else {
2834 encode_putfh(xdr, args->dir_fh, &hdr);
2835 encode_lookup(xdr, args->name, &hdr);
2836 replen = hdr.replen;
2837 encode_fs_locations(xdr, args->bitmask, &hdr);
2838 }
2839
2840 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0,
2841 PAGE_SIZE, replen);
2842 encode_nops(&hdr);
2843}
2844
2845/*
2846 * Encode SECINFO request
2847 */
2848static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2849 struct xdr_stream *xdr,
2850 const void *data)
2851{
2852 const struct nfs4_secinfo_arg *args = data;
2853 struct compound_hdr hdr = {
2854 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2855 };
2856
2857 encode_compound_hdr(xdr, req, &hdr);
2858 encode_sequence(xdr, &args->seq_args, &hdr);
2859 encode_putfh(xdr, args->dir_fh, &hdr);
2860 encode_secinfo(xdr, args->name, &hdr);
2861 encode_nops(&hdr);
2862}
2863
2864/*
2865 * Encode FSID_PRESENT request
2866 */
2867static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2868 struct xdr_stream *xdr,
2869 const void *data)
2870{
2871 const struct nfs4_fsid_present_arg *args = data;
2872 struct compound_hdr hdr = {
2873 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2874 };
2875
2876 encode_compound_hdr(xdr, req, &hdr);
2877 encode_sequence(xdr, &args->seq_args, &hdr);
2878 encode_putfh(xdr, args->fh, &hdr);
2879 encode_getfh(xdr, &hdr);
2880 if (args->renew)
2881 encode_renew(xdr, args->clientid, &hdr);
2882 encode_nops(&hdr);
2883}
2884
2885#if defined(CONFIG_NFS_V4_1)
2886/*
2887 * BIND_CONN_TO_SESSION request
2888 */
2889static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2890 struct xdr_stream *xdr,
2891 const void *data)
2892{
2893 const struct nfs41_bind_conn_to_session_args *args = data;
2894 struct compound_hdr hdr = {
2895 .minorversion = args->client->cl_mvops->minor_version,
2896 };
2897
2898 encode_compound_hdr(xdr, req, &hdr);
2899 encode_bind_conn_to_session(xdr, args, &hdr);
2900 encode_nops(&hdr);
2901}
2902
2903/*
2904 * EXCHANGE_ID request
2905 */
2906static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2907 struct xdr_stream *xdr,
2908 const void *data)
2909{
2910 const struct nfs41_exchange_id_args *args = data;
2911 struct compound_hdr hdr = {
2912 .minorversion = args->client->cl_mvops->minor_version,
2913 };
2914
2915 encode_compound_hdr(xdr, req, &hdr);
2916 encode_exchange_id(xdr, args, &hdr);
2917 encode_nops(&hdr);
2918}
2919
2920/*
2921 * a CREATE_SESSION request
2922 */
2923static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2924 struct xdr_stream *xdr,
2925 const void *data)
2926{
2927 const struct nfs41_create_session_args *args = data;
2928 struct compound_hdr hdr = {
2929 .minorversion = args->client->cl_mvops->minor_version,
2930 };
2931
2932 encode_compound_hdr(xdr, req, &hdr);
2933 encode_create_session(xdr, args, &hdr);
2934 encode_nops(&hdr);
2935}
2936
2937/*
2938 * a DESTROY_SESSION request
2939 */
2940static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2941 struct xdr_stream *xdr,
2942 const void *data)
2943{
2944 const struct nfs4_session *session = data;
2945 struct compound_hdr hdr = {
2946 .minorversion = session->clp->cl_mvops->minor_version,
2947 };
2948
2949 encode_compound_hdr(xdr, req, &hdr);
2950 encode_destroy_session(xdr, session, &hdr);
2951 encode_nops(&hdr);
2952}
2953
2954/*
2955 * a DESTROY_CLIENTID request
2956 */
2957static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2958 struct xdr_stream *xdr,
2959 const void *data)
2960{
2961 const struct nfs_client *clp = data;
2962 struct compound_hdr hdr = {
2963 .minorversion = clp->cl_mvops->minor_version,
2964 };
2965
2966 encode_compound_hdr(xdr, req, &hdr);
2967 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2968 encode_nops(&hdr);
2969}
2970
2971/*
2972 * a SEQUENCE request
2973 */
2974static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2975 const void *data)
2976{
2977 const struct nfs4_sequence_args *args = data;
2978 struct compound_hdr hdr = {
2979 .minorversion = nfs4_xdr_minorversion(args),
2980 };
2981
2982 encode_compound_hdr(xdr, req, &hdr);
2983 encode_sequence(xdr, args, &hdr);
2984 encode_nops(&hdr);
2985}
2986
2987#endif
2988
2989/*
2990 * a GET_LEASE_TIME request
2991 */
2992static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2993 struct xdr_stream *xdr,
2994 const void *data)
2995{
2996 const struct nfs4_get_lease_time_args *args = data;
2997 struct compound_hdr hdr = {
2998 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2999 };
3000 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
3001
3002 encode_compound_hdr(xdr, req, &hdr);
3003 encode_sequence(xdr, &args->la_seq_args, &hdr);
3004 encode_putrootfh(xdr, &hdr);
3005 encode_fsinfo(xdr, lease_bitmap, &hdr);
3006 encode_nops(&hdr);
3007}
3008
3009#ifdef CONFIG_NFS_V4_1
3010
3011/*
3012 * a RECLAIM_COMPLETE request
3013 */
3014static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
3015 struct xdr_stream *xdr,
3016 const void *data)
3017{
3018 const struct nfs41_reclaim_complete_args *args = data;
3019 struct compound_hdr hdr = {
3020 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
3021 };
3022
3023 encode_compound_hdr(xdr, req, &hdr);
3024 encode_sequence(xdr, &args->seq_args, &hdr);
3025 encode_reclaim_complete(xdr, args, &hdr);
3026 encode_nops(&hdr);
3027}
3028
3029/*
3030 * Encode GETDEVICEINFO request
3031 */
3032static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
3033 struct xdr_stream *xdr,
3034 const void *data)
3035{
3036 const struct nfs4_getdeviceinfo_args *args = data;
3037 struct compound_hdr hdr = {
3038 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3039 };
3040 uint32_t replen;
3041
3042 encode_compound_hdr(xdr, req, &hdr);
3043 encode_sequence(xdr, &args->seq_args, &hdr);
3044
3045 replen = hdr.replen + op_decode_hdr_maxsz + 2;
3046
3047 encode_getdeviceinfo(xdr, args, &hdr);
3048
3049 /* set up reply kvec. device_addr4 opaque data is read into the
3050 * pages */
3051 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase,
3052 args->pdev->pglen, replen);
3053 encode_nops(&hdr);
3054}
3055
3056/*
3057 * Encode LAYOUTGET request
3058 */
3059static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
3060 struct xdr_stream *xdr,
3061 const void *data)
3062{
3063 const struct nfs4_layoutget_args *args = data;
3064 struct compound_hdr hdr = {
3065 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3066 };
3067
3068 encode_compound_hdr(xdr, req, &hdr);
3069 encode_sequence(xdr, &args->seq_args, &hdr);
3070 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3071 encode_layoutget(xdr, args, &hdr);
3072
3073 rpc_prepare_reply_pages(req, args->layout.pages, 0,
3074 args->layout.pglen, hdr.replen - pagepad_maxsz);
3075 encode_nops(&hdr);
3076}
3077
3078/*
3079 * Encode LAYOUTCOMMIT request
3080 */
3081static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
3082 struct xdr_stream *xdr,
3083 const void *priv)
3084{
3085 const struct nfs4_layoutcommit_args *args = priv;
3086 struct nfs4_layoutcommit_data *data =
3087 container_of(args, struct nfs4_layoutcommit_data, args);
3088 struct compound_hdr hdr = {
3089 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3090 };
3091
3092 encode_compound_hdr(xdr, req, &hdr);
3093 encode_sequence(xdr, &args->seq_args, &hdr);
3094 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3095 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
3096 encode_getfattr(xdr, args->bitmask, &hdr);
3097 encode_nops(&hdr);
3098}
3099
3100/*
3101 * Encode LAYOUTRETURN request
3102 */
3103static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
3104 struct xdr_stream *xdr,
3105 const void *data)
3106{
3107 const struct nfs4_layoutreturn_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_putfh(xdr, NFS_FH(args->inode), &hdr);
3115 encode_layoutreturn(xdr, args, &hdr);
3116 encode_nops(&hdr);
3117}
3118
3119/*
3120 * Encode SECINFO_NO_NAME request
3121 */
3122static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3123 struct xdr_stream *xdr,
3124 const void *data)
3125{
3126 const struct nfs41_secinfo_no_name_args *args = data;
3127 struct compound_hdr hdr = {
3128 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3129 };
3130
3131 encode_compound_hdr(xdr, req, &hdr);
3132 encode_sequence(xdr, &args->seq_args, &hdr);
3133 encode_putrootfh(xdr, &hdr);
3134 encode_secinfo_no_name(xdr, args, &hdr);
3135 encode_nops(&hdr);
3136}
3137
3138/*
3139 * Encode TEST_STATEID request
3140 */
3141static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3142 struct xdr_stream *xdr,
3143 const void *data)
3144{
3145 const struct nfs41_test_stateid_args *args = data;
3146 struct compound_hdr hdr = {
3147 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3148 };
3149
3150 encode_compound_hdr(xdr, req, &hdr);
3151 encode_sequence(xdr, &args->seq_args, &hdr);
3152 encode_test_stateid(xdr, args, &hdr);
3153 encode_nops(&hdr);
3154}
3155
3156/*
3157 * Encode FREE_STATEID request
3158 */
3159static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3160 struct xdr_stream *xdr,
3161 const void *data)
3162{
3163 const struct nfs41_free_stateid_args *args = data;
3164 struct compound_hdr hdr = {
3165 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3166 };
3167
3168 encode_compound_hdr(xdr, req, &hdr);
3169 encode_sequence(xdr, &args->seq_args, &hdr);
3170 encode_free_stateid(xdr, args, &hdr);
3171 encode_nops(&hdr);
3172}
3173#endif /* CONFIG_NFS_V4_1 */
3174
3175static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3176{
3177 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string,
3178 NFS4_OPAQUE_LIMIT);
3179 if (unlikely(ret < 0))
3180 return -EIO;
3181 *len = ret;
3182 return 0;
3183}
3184
3185static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3186{
3187 ssize_t ret;
3188 void *ptr;
3189 u32 tmp;
3190
3191 if (xdr_stream_decode_u32(xdr, &tmp) < 0)
3192 return -EIO;
3193 hdr->status = tmp;
3194
3195 ret = xdr_stream_decode_opaque_inline(xdr, &ptr, NFS4_OPAQUE_LIMIT);
3196 if (ret < 0)
3197 return -EIO;
3198 hdr->taglen = ret;
3199 hdr->tag = ptr;
3200
3201 if (xdr_stream_decode_u32(xdr, &tmp) < 0)
3202 return -EIO;
3203 hdr->nops = tmp;
3204 if (unlikely(hdr->nops < 1))
3205 return nfs4_stat_to_errno(hdr->status);
3206 return 0;
3207}
3208
3209static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3210 int *nfs_retval)
3211{
3212 __be32 *p;
3213 uint32_t opnum;
3214 int32_t nfserr;
3215
3216 p = xdr_inline_decode(xdr, 8);
3217 if (unlikely(!p))
3218 goto out_overflow;
3219 opnum = be32_to_cpup(p++);
3220 if (unlikely(opnum != expected))
3221 goto out_bad_operation;
3222 if (unlikely(*p != cpu_to_be32(NFS_OK)))
3223 goto out_status;
3224 *nfs_retval = 0;
3225 return true;
3226out_status:
3227 nfserr = be32_to_cpup(p);
3228 trace_nfs4_xdr_status(xdr, opnum, nfserr);
3229 *nfs_retval = nfs4_stat_to_errno(nfserr);
3230 return true;
3231out_bad_operation:
3232 trace_nfs4_xdr_bad_operation(xdr, opnum, expected);
3233 *nfs_retval = -EREMOTEIO;
3234 return false;
3235out_overflow:
3236 *nfs_retval = -EIO;
3237 return false;
3238}
3239
3240static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3241{
3242 int retval;
3243
3244 __decode_op_hdr(xdr, expected, &retval);
3245 return retval;
3246}
3247
3248/* Dummy routine */
3249static int decode_ace(struct xdr_stream *xdr, void *ace)
3250{
3251 __be32 *p;
3252 unsigned int strlen;
3253 char *str;
3254
3255 p = xdr_inline_decode(xdr, 12);
3256 if (unlikely(!p))
3257 return -EIO;
3258 return decode_opaque_inline(xdr, &strlen, &str);
3259}
3260
3261static ssize_t
3262decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz)
3263{
3264 ssize_t ret;
3265
3266 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz);
3267 if (likely(ret >= 0))
3268 return ret;
3269 if (ret != -EMSGSIZE)
3270 return -EIO;
3271 return sz;
3272}
3273
3274static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3275{
3276 ssize_t ret;
3277 ret = decode_bitmap4(xdr, bitmap, 3);
3278 return ret < 0 ? ret : 0;
3279}
3280
3281static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3282{
3283 __be32 *p;
3284
3285 p = xdr_inline_decode(xdr, 4);
3286 if (unlikely(!p))
3287 return -EIO;
3288 *attrlen = be32_to_cpup(p);
3289 *savep = xdr_stream_pos(xdr);
3290 return 0;
3291}
3292
3293static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3294{
3295 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3296 int ret;
3297 ret = decode_attr_bitmap(xdr, bitmask);
3298 if (unlikely(ret < 0))
3299 return ret;
3300 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3301 } else
3302 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3303 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3304 bitmask[0], bitmask[1], bitmask[2]);
3305 return 0;
3306}
3307
3308static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3309{
3310 __be32 *p;
3311 int ret = 0;
3312
3313 *type = 0;
3314 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3315 return -EIO;
3316 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3317 p = xdr_inline_decode(xdr, 4);
3318 if (unlikely(!p))
3319 return -EIO;
3320 *type = be32_to_cpup(p);
3321 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3322 dprintk("%s: bad type %d\n", __func__, *type);
3323 return -EIO;
3324 }
3325 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3326 ret = NFS_ATTR_FATTR_TYPE;
3327 }
3328 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3329 return ret;
3330}
3331
3332static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3333 uint32_t *bitmap, uint32_t *type)
3334{
3335 __be32 *p;
3336
3337 *type = 0;
3338 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3339 return -EIO;
3340 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3341 p = xdr_inline_decode(xdr, 4);
3342 if (unlikely(!p))
3343 return -EIO;
3344 *type = be32_to_cpup(p);
3345 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3346 }
3347 dprintk("%s: expire type=0x%x\n", __func__, *type);
3348 return 0;
3349}
3350
3351static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3352{
3353 __be32 *p;
3354 int ret = 0;
3355
3356 *change = 0;
3357 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3358 return -EIO;
3359 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3360 p = xdr_inline_decode(xdr, 8);
3361 if (unlikely(!p))
3362 return -EIO;
3363 xdr_decode_hyper(p, change);
3364 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3365 ret = NFS_ATTR_FATTR_CHANGE;
3366 }
3367 dprintk("%s: change attribute=%Lu\n", __func__,
3368 (unsigned long long)*change);
3369 return ret;
3370}
3371
3372static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3373{
3374 __be32 *p;
3375 int ret = 0;
3376
3377 *size = 0;
3378 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3379 return -EIO;
3380 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3381 p = xdr_inline_decode(xdr, 8);
3382 if (unlikely(!p))
3383 return -EIO;
3384 xdr_decode_hyper(p, size);
3385 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3386 ret = NFS_ATTR_FATTR_SIZE;
3387 }
3388 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3389 return ret;
3390}
3391
3392static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3393{
3394 __be32 *p;
3395
3396 *res = 0;
3397 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3398 return -EIO;
3399 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3400 p = xdr_inline_decode(xdr, 4);
3401 if (unlikely(!p))
3402 return -EIO;
3403 *res = be32_to_cpup(p);
3404 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3405 }
3406 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3407 return 0;
3408}
3409
3410static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3411{
3412 __be32 *p;
3413
3414 *res = 0;
3415 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3416 return -EIO;
3417 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3418 p = xdr_inline_decode(xdr, 4);
3419 if (unlikely(!p))
3420 return -EIO;
3421 *res = be32_to_cpup(p);
3422 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3423 }
3424 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3425 return 0;
3426}
3427
3428static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3429{
3430 __be32 *p;
3431 int ret = 0;
3432
3433 fsid->major = 0;
3434 fsid->minor = 0;
3435 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3436 return -EIO;
3437 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3438 p = xdr_inline_decode(xdr, 16);
3439 if (unlikely(!p))
3440 return -EIO;
3441 p = xdr_decode_hyper(p, &fsid->major);
3442 xdr_decode_hyper(p, &fsid->minor);
3443 bitmap[0] &= ~FATTR4_WORD0_FSID;
3444 ret = NFS_ATTR_FATTR_FSID;
3445 }
3446 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3447 (unsigned long long)fsid->major,
3448 (unsigned long long)fsid->minor);
3449 return ret;
3450}
3451
3452static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3453{
3454 __be32 *p;
3455
3456 *res = 60;
3457 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3458 return -EIO;
3459 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3460 p = xdr_inline_decode(xdr, 4);
3461 if (unlikely(!p))
3462 return -EIO;
3463 *res = be32_to_cpup(p);
3464 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3465 }
3466 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res);
3467 return 0;
3468}
3469
3470static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3471{
3472 __be32 *p;
3473
3474 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3475 return -EIO;
3476 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3477 p = xdr_inline_decode(xdr, 4);
3478 if (unlikely(!p))
3479 return -EIO;
3480 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3481 *res = -be32_to_cpup(p);
3482 }
3483 return 0;
3484}
3485
3486static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3487 uint32_t *bitmap, uint32_t *bitmask)
3488{
3489 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3490 int ret;
3491 ret = decode_attr_bitmap(xdr, bitmask);
3492 if (unlikely(ret < 0))
3493 return ret;
3494 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3495 } else
3496 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3497 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3498 bitmask[0], bitmask[1], bitmask[2]);
3499 return 0;
3500}
3501
3502static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3503{
3504 __be32 *p;
3505 u32 len;
3506
3507 if (fh != NULL)
3508 memset(fh, 0, sizeof(*fh));
3509
3510 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3511 return -EIO;
3512 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3513 p = xdr_inline_decode(xdr, 4);
3514 if (unlikely(!p))
3515 return -EIO;
3516 len = be32_to_cpup(p);
3517 if (len > NFS4_FHSIZE || len == 0) {
3518 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR,
3519 NFS4ERR_BADHANDLE);
3520 return -EREMOTEIO;
3521 }
3522 p = xdr_inline_decode(xdr, len);
3523 if (unlikely(!p))
3524 return -EIO;
3525 if (fh != NULL) {
3526 memcpy(fh->data, p, len);
3527 fh->size = len;
3528 }
3529 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3530 }
3531 return 0;
3532}
3533
3534static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3535{
3536 __be32 *p;
3537
3538 *res = 0;
3539 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3540 return -EIO;
3541 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3542 p = xdr_inline_decode(xdr, 4);
3543 if (unlikely(!p))
3544 return -EIO;
3545 *res = be32_to_cpup(p);
3546 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3547 }
3548 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3549 return 0;
3550}
3551
3552static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3553{
3554 __be32 *p;
3555
3556 *res = 0;
3557 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_INSENSITIVE - 1U)))
3558 return -EIO;
3559 if (likely(bitmap[0] & FATTR4_WORD0_CASE_INSENSITIVE)) {
3560 p = xdr_inline_decode(xdr, 4);
3561 if (unlikely(!p))
3562 return -EIO;
3563 *res = be32_to_cpup(p);
3564 bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE;
3565 }
3566 dprintk("%s: case_insensitive=%s\n", __func__, *res == 0 ? "false" : "true");
3567 return 0;
3568}
3569
3570static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3571{
3572 __be32 *p;
3573
3574 *res = 0;
3575 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_PRESERVING - 1U)))
3576 return -EIO;
3577 if (likely(bitmap[0] & FATTR4_WORD0_CASE_PRESERVING)) {
3578 p = xdr_inline_decode(xdr, 4);
3579 if (unlikely(!p))
3580 return -EIO;
3581 *res = be32_to_cpup(p);
3582 bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING;
3583 }
3584 dprintk("%s: case_preserving=%s\n", __func__, *res == 0 ? "false" : "true");
3585 return 0;
3586}
3587
3588static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3589{
3590 __be32 *p;
3591 int ret = 0;
3592
3593 *fileid = 0;
3594 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3595 return -EIO;
3596 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3597 p = xdr_inline_decode(xdr, 8);
3598 if (unlikely(!p))
3599 return -EIO;
3600 xdr_decode_hyper(p, fileid);
3601 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3602 ret = NFS_ATTR_FATTR_FILEID;
3603 }
3604 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3605 return ret;
3606}
3607
3608static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3609{
3610 __be32 *p;
3611 int ret = 0;
3612
3613 *fileid = 0;
3614 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3615 return -EIO;
3616 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3617 p = xdr_inline_decode(xdr, 8);
3618 if (unlikely(!p))
3619 return -EIO;
3620 xdr_decode_hyper(p, fileid);
3621 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3622 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3623 }
3624 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3625 return ret;
3626}
3627
3628static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3629{
3630 __be32 *p;
3631 int status = 0;
3632
3633 *res = 0;
3634 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3635 return -EIO;
3636 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3637 p = xdr_inline_decode(xdr, 8);
3638 if (unlikely(!p))
3639 return -EIO;
3640 xdr_decode_hyper(p, res);
3641 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3642 }
3643 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3644 return status;
3645}
3646
3647static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3648{
3649 __be32 *p;
3650 int status = 0;
3651
3652 *res = 0;
3653 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3654 return -EIO;
3655 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3656 p = xdr_inline_decode(xdr, 8);
3657 if (unlikely(!p))
3658 return -EIO;
3659 xdr_decode_hyper(p, res);
3660 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3661 }
3662 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3663 return status;
3664}
3665
3666static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3667{
3668 __be32 *p;
3669 int status = 0;
3670
3671 *res = 0;
3672 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3673 return -EIO;
3674 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3675 p = xdr_inline_decode(xdr, 8);
3676 if (unlikely(!p))
3677 return -EIO;
3678 xdr_decode_hyper(p, res);
3679 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3680 }
3681 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3682 return status;
3683}
3684
3685static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3686{
3687 u32 n;
3688 __be32 *p;
3689 int status = 0;
3690
3691 p = xdr_inline_decode(xdr, 4);
3692 if (unlikely(!p))
3693 return -EIO;
3694 n = be32_to_cpup(p);
3695 if (n == 0)
3696 goto root_path;
3697 dprintk("pathname4: ");
3698 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3699 dprintk("cannot parse %d components in path\n", n);
3700 goto out_eio;
3701 }
3702 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3703 struct nfs4_string *component = &path->components[path->ncomponents];
3704 status = decode_opaque_inline(xdr, &component->len, &component->data);
3705 if (unlikely(status != 0))
3706 goto out_eio;
3707 ifdebug (XDR)
3708 pr_cont("%s%.*s ",
3709 (path->ncomponents != n ? "/ " : ""),
3710 component->len, component->data);
3711 }
3712out:
3713 return status;
3714root_path:
3715/* a root pathname is sent as a zero component4 */
3716 path->ncomponents = 1;
3717 path->components[0].len=0;
3718 path->components[0].data=NULL;
3719 dprintk("pathname4: /\n");
3720 goto out;
3721out_eio:
3722 dprintk(" status %d", status);
3723 status = -EIO;
3724 goto out;
3725}
3726
3727static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3728{
3729 int n;
3730 __be32 *p;
3731 int status = -EIO;
3732
3733 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3734 goto out;
3735 status = 0;
3736 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3737 goto out;
3738 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3739 status = -EIO;
3740 /* Ignore borken servers that return unrequested attrs */
3741 if (unlikely(res == NULL))
3742 goto out;
3743 dprintk("%s: fsroot:\n", __func__);
3744 status = decode_pathname(xdr, &res->fs_path);
3745 if (unlikely(status != 0))
3746 goto out;
3747 p = xdr_inline_decode(xdr, 4);
3748 if (unlikely(!p))
3749 goto out_eio;
3750 n = be32_to_cpup(p);
3751 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3752 u32 m;
3753 struct nfs4_fs_location *loc;
3754
3755 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3756 break;
3757 loc = &res->locations[res->nlocations];
3758 p = xdr_inline_decode(xdr, 4);
3759 if (unlikely(!p))
3760 goto out_eio;
3761 m = be32_to_cpup(p);
3762
3763 dprintk("%s: servers:\n", __func__);
3764 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3765 struct nfs4_string *server;
3766
3767 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3768 unsigned int i;
3769 dprintk("%s: using first %u of %u servers "
3770 "returned for location %u\n",
3771 __func__,
3772 NFS4_FS_LOCATION_MAXSERVERS,
3773 m, res->nlocations);
3774 for (i = loc->nservers; i < m; i++) {
3775 unsigned int len;
3776 char *data;
3777 status = decode_opaque_inline(xdr, &len, &data);
3778 if (unlikely(status != 0))
3779 goto out_eio;
3780 }
3781 break;
3782 }
3783 server = &loc->servers[loc->nservers];
3784 status = decode_opaque_inline(xdr, &server->len, &server->data);
3785 if (unlikely(status != 0))
3786 goto out_eio;
3787 dprintk("%s ", server->data);
3788 }
3789 status = decode_pathname(xdr, &loc->rootpath);
3790 if (unlikely(status != 0))
3791 goto out_eio;
3792 }
3793 if (res->nlocations != 0)
3794 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3795out:
3796 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3797 return status;
3798out_eio:
3799 status = -EIO;
3800 goto out;
3801}
3802
3803static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3804{
3805 __be32 *p;
3806 int status = 0;
3807
3808 *res = 0;
3809 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3810 return -EIO;
3811 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3812 p = xdr_inline_decode(xdr, 8);
3813 if (unlikely(!p))
3814 return -EIO;
3815 xdr_decode_hyper(p, res);
3816 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3817 }
3818 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3819 return status;
3820}
3821
3822static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3823{
3824 __be32 *p;
3825 int status = 0;
3826
3827 *maxlink = 1;
3828 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3829 return -EIO;
3830 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3831 p = xdr_inline_decode(xdr, 4);
3832 if (unlikely(!p))
3833 return -EIO;
3834 *maxlink = be32_to_cpup(p);
3835 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3836 }
3837 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3838 return status;
3839}
3840
3841static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3842{
3843 __be32 *p;
3844 int status = 0;
3845
3846 *maxname = 1024;
3847 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3848 return -EIO;
3849 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3850 p = xdr_inline_decode(xdr, 4);
3851 if (unlikely(!p))
3852 return -EIO;
3853 *maxname = be32_to_cpup(p);
3854 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3855 }
3856 dprintk("%s: maxname=%u\n", __func__, *maxname);
3857 return status;
3858}
3859
3860static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3861{
3862 __be32 *p;
3863 int status = 0;
3864
3865 *res = 1024;
3866 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3867 return -EIO;
3868 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3869 uint64_t maxread;
3870 p = xdr_inline_decode(xdr, 8);
3871 if (unlikely(!p))
3872 return -EIO;
3873 xdr_decode_hyper(p, &maxread);
3874 if (maxread > 0x7FFFFFFF)
3875 maxread = 0x7FFFFFFF;
3876 *res = (uint32_t)maxread;
3877 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3878 }
3879 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3880 return status;
3881}
3882
3883static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3884{
3885 __be32 *p;
3886 int status = 0;
3887
3888 *res = 1024;
3889 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3890 return -EIO;
3891 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3892 uint64_t maxwrite;
3893 p = xdr_inline_decode(xdr, 8);
3894 if (unlikely(!p))
3895 return -EIO;
3896 xdr_decode_hyper(p, &maxwrite);
3897 if (maxwrite > 0x7FFFFFFF)
3898 maxwrite = 0x7FFFFFFF;
3899 *res = (uint32_t)maxwrite;
3900 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3901 }
3902 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3903 return status;
3904}
3905
3906static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3907{
3908 uint32_t tmp;
3909 __be32 *p;
3910 int ret = 0;
3911
3912 *mode = 0;
3913 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3914 return -EIO;
3915 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3916 p = xdr_inline_decode(xdr, 4);
3917 if (unlikely(!p))
3918 return -EIO;
3919 tmp = be32_to_cpup(p);
3920 *mode = tmp & ~S_IFMT;
3921 bitmap[1] &= ~FATTR4_WORD1_MODE;
3922 ret = NFS_ATTR_FATTR_MODE;
3923 }
3924 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3925 return ret;
3926}
3927
3928static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3929{
3930 __be32 *p;
3931 int ret = 0;
3932
3933 *nlink = 1;
3934 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3935 return -EIO;
3936 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3937 p = xdr_inline_decode(xdr, 4);
3938 if (unlikely(!p))
3939 return -EIO;
3940 *nlink = be32_to_cpup(p);
3941 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3942 ret = NFS_ATTR_FATTR_NLINK;
3943 }
3944 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3945 return ret;
3946}
3947
3948static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3949 struct nfs4_string *name, gfp_t gfp_flags)
3950{
3951 ssize_t ret;
3952
3953 ret = xdr_stream_decode_string_dup(xdr, &name->data,
3954 XDR_MAX_NETOBJ, gfp_flags);
3955 name->len = 0;
3956 if (ret > 0)
3957 name->len = ret;
3958 return ret;
3959}
3960
3961static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3962 const struct nfs_server *server, kuid_t *uid,
3963 struct nfs4_string *owner_name)
3964{
3965 ssize_t len;
3966 char *p;
3967
3968 *uid = make_kuid(&init_user_ns, -2);
3969 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3970 return -EIO;
3971 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
3972 return 0;
3973 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3974
3975 if (owner_name != NULL) {
3976 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO);
3977 if (len <= 0)
3978 goto out;
3979 dprintk("%s: name=%s\n", __func__, owner_name->data);
3980 return NFS_ATTR_FATTR_OWNER_NAME;
3981 } else {
3982 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3983 XDR_MAX_NETOBJ);
3984 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
3985 goto out;
3986 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3987 return NFS_ATTR_FATTR_OWNER;
3988 }
3989out:
3990 if (len == -EBADMSG)
3991 return -EIO;
3992 return 0;
3993}
3994
3995static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3996 const struct nfs_server *server, kgid_t *gid,
3997 struct nfs4_string *group_name)
3998{
3999 ssize_t len;
4000 char *p;
4001
4002 *gid = make_kgid(&init_user_ns, -2);
4003 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
4004 return -EIO;
4005 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
4006 return 0;
4007 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
4008
4009 if (group_name != NULL) {
4010 len = decode_nfs4_string(xdr, group_name, GFP_NOIO);
4011 if (len <= 0)
4012 goto out;
4013 dprintk("%s: name=%s\n", __func__, group_name->data);
4014 return NFS_ATTR_FATTR_GROUP_NAME;
4015 } else {
4016 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
4017 XDR_MAX_NETOBJ);
4018 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
4019 goto out;
4020 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
4021 return NFS_ATTR_FATTR_GROUP;
4022 }
4023out:
4024 if (len == -EBADMSG)
4025 return -EIO;
4026 return 0;
4027}
4028
4029static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
4030{
4031 uint32_t major = 0, minor = 0;
4032 __be32 *p;
4033 int ret = 0;
4034
4035 *rdev = MKDEV(0,0);
4036 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
4037 return -EIO;
4038 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
4039 dev_t tmp;
4040
4041 p = xdr_inline_decode(xdr, 8);
4042 if (unlikely(!p))
4043 return -EIO;
4044 major = be32_to_cpup(p++);
4045 minor = be32_to_cpup(p);
4046 tmp = MKDEV(major, minor);
4047 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
4048 *rdev = tmp;
4049 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
4050 ret = NFS_ATTR_FATTR_RDEV;
4051 }
4052 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4053 return ret;
4054}
4055
4056static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4057{
4058 __be32 *p;
4059 int status = 0;
4060
4061 *res = 0;
4062 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4063 return -EIO;
4064 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4065 p = xdr_inline_decode(xdr, 8);
4066 if (unlikely(!p))
4067 return -EIO;
4068 xdr_decode_hyper(p, res);
4069 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4070 }
4071 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4072 return status;
4073}
4074
4075static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4076{
4077 __be32 *p;
4078 int status = 0;
4079
4080 *res = 0;
4081 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4082 return -EIO;
4083 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4084 p = xdr_inline_decode(xdr, 8);
4085 if (unlikely(!p))
4086 return -EIO;
4087 xdr_decode_hyper(p, res);
4088 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4089 }
4090 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4091 return status;
4092}
4093
4094static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4095{
4096 __be32 *p;
4097 int status = 0;
4098
4099 *res = 0;
4100 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4101 return -EIO;
4102 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4103 p = xdr_inline_decode(xdr, 8);
4104 if (unlikely(!p))
4105 return -EIO;
4106 xdr_decode_hyper(p, res);
4107 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4108 }
4109 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4110 return status;
4111}
4112
4113static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4114{
4115 __be32 *p;
4116 int ret = 0;
4117
4118 *used = 0;
4119 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4120 return -EIO;
4121 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4122 p = xdr_inline_decode(xdr, 8);
4123 if (unlikely(!p))
4124 return -EIO;
4125 xdr_decode_hyper(p, used);
4126 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4127 ret = NFS_ATTR_FATTR_SPACE_USED;
4128 }
4129 dprintk("%s: space used=%Lu\n", __func__,
4130 (unsigned long long)*used);
4131 return ret;
4132}
4133
4134static __be32 *
4135xdr_decode_nfstime4(__be32 *p, struct timespec64 *t)
4136{
4137 __u64 sec;
4138
4139 p = xdr_decode_hyper(p, &sec);
4140 t-> tv_sec = sec;
4141 t->tv_nsec = be32_to_cpup(p++);
4142 return p;
4143}
4144
4145static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time)
4146{
4147 __be32 *p;
4148
4149 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2);
4150 if (unlikely(!p))
4151 return -EIO;
4152 xdr_decode_nfstime4(p, time);
4153 return 0;
4154}
4155
4156static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4157{
4158 int status = 0;
4159
4160 time->tv_sec = 0;
4161 time->tv_nsec = 0;
4162 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4163 return -EIO;
4164 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4165 status = decode_attr_time(xdr, time);
4166 if (status == 0)
4167 status = NFS_ATTR_FATTR_ATIME;
4168 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4169 }
4170 dprintk("%s: atime=%lld\n", __func__, time->tv_sec);
4171 return status;
4172}
4173
4174static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4175{
4176 int status = 0;
4177
4178 time->tv_sec = 0;
4179 time->tv_nsec = 0;
4180 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4181 return -EIO;
4182 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4183 status = decode_attr_time(xdr, time);
4184 if (status == 0)
4185 status = NFS_ATTR_FATTR_CTIME;
4186 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4187 }
4188 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec);
4189 return status;
4190}
4191
4192static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4193 struct timespec64 *time)
4194{
4195 int status = 0;
4196
4197 time->tv_sec = 0;
4198 time->tv_nsec = 0;
4199 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4200 return -EIO;
4201 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4202 status = decode_attr_time(xdr, time);
4203 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4204 }
4205 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec,
4206 time->tv_nsec);
4207 return status;
4208}
4209
4210static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4211 struct nfs4_label *label)
4212{
4213 uint32_t pi = 0;
4214 uint32_t lfs = 0;
4215 __u32 len;
4216 __be32 *p;
4217 int status = 0;
4218
4219 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4220 return -EIO;
4221 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4222 p = xdr_inline_decode(xdr, 4);
4223 if (unlikely(!p))
4224 return -EIO;
4225 lfs = be32_to_cpup(p++);
4226 p = xdr_inline_decode(xdr, 4);
4227 if (unlikely(!p))
4228 return -EIO;
4229 pi = be32_to_cpup(p++);
4230 p = xdr_inline_decode(xdr, 4);
4231 if (unlikely(!p))
4232 return -EIO;
4233 len = be32_to_cpup(p++);
4234 p = xdr_inline_decode(xdr, len);
4235 if (unlikely(!p))
4236 return -EIO;
4237 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4238 if (len < NFS4_MAXLABELLEN) {
4239 if (label && label->len) {
4240 if (label->len < len)
4241 return -ERANGE;
4242 memcpy(label->label, p, len);
4243 label->len = len;
4244 label->pi = pi;
4245 label->lfs = lfs;
4246 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4247 }
4248 } else
4249 printk(KERN_WARNING "%s: label too long (%u)!\n",
4250 __func__, len);
4251 if (label && label->label)
4252 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n",
4253 __func__, label->len, (char *)label->label,
4254 label->len, label->pi, label->lfs);
4255 }
4256 return status;
4257}
4258
4259static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4260{
4261 int status = 0;
4262
4263 time->tv_sec = 0;
4264 time->tv_nsec = 0;
4265 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4266 return -EIO;
4267 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4268 status = decode_attr_time(xdr, time);
4269 if (status == 0)
4270 status = NFS_ATTR_FATTR_MTIME;
4271 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4272 }
4273 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec);
4274 return status;
4275}
4276
4277static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
4278 uint32_t *res)
4279{
4280 __be32 *p;
4281
4282 *res = 0;
4283 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U)))
4284 return -EIO;
4285 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) {
4286 p = xdr_inline_decode(xdr, 4);
4287 if (unlikely(!p))
4288 return -EIO;
4289 *res = be32_to_cpup(p);
4290 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
4291 }
4292 dprintk("%s: XATTR support=%s\n", __func__,
4293 *res == 0 ? "false" : "true");
4294 return 0;
4295}
4296
4297static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4298{
4299 unsigned int attrwords = XDR_QUADLEN(attrlen);
4300 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4301
4302 if (unlikely(attrwords != nwords)) {
4303 dprintk("%s: server returned incorrect attribute length: "
4304 "%u %c %u\n",
4305 __func__,
4306 attrwords << 2,
4307 (attrwords < nwords) ? '<' : '>',
4308 nwords << 2);
4309 return -EIO;
4310 }
4311 return 0;
4312}
4313
4314static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4315{
4316 __be32 *p;
4317
4318 p = xdr_inline_decode(xdr, 20);
4319 if (unlikely(!p))
4320 return -EIO;
4321 cinfo->atomic = be32_to_cpup(p++);
4322 p = xdr_decode_hyper(p, &cinfo->before);
4323 xdr_decode_hyper(p, &cinfo->after);
4324 return 0;
4325}
4326
4327static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4328{
4329 __be32 *p;
4330 uint32_t supp, acc;
4331 int status;
4332
4333 status = decode_op_hdr(xdr, OP_ACCESS);
4334 if (status)
4335 return status;
4336 p = xdr_inline_decode(xdr, 8);
4337 if (unlikely(!p))
4338 return -EIO;
4339 supp = be32_to_cpup(p++);
4340 acc = be32_to_cpup(p);
4341 *supported = supp;
4342 *access = acc;
4343 return 0;
4344}
4345
4346static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4347{
4348 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
4349 if (unlikely(ret < 0))
4350 return -EIO;
4351 return 0;
4352}
4353
4354static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4355{
4356 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4357}
4358
4359static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4360{
4361 stateid->type = NFS4_OPEN_STATEID_TYPE;
4362 return decode_stateid(xdr, stateid);
4363}
4364
4365static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4366{
4367 stateid->type = NFS4_LOCK_STATEID_TYPE;
4368 return decode_stateid(xdr, stateid);
4369}
4370
4371static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4372{
4373 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4374 return decode_stateid(xdr, stateid);
4375}
4376
4377static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4378{
4379 nfs4_stateid dummy;
4380
4381 nfs4_stateid_copy(stateid, &invalid_stateid);
4382 return decode_stateid(xdr, &dummy);
4383}
4384
4385static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4386{
4387 int status;
4388
4389 status = decode_op_hdr(xdr, OP_CLOSE);
4390 if (status != -EIO)
4391 nfs_increment_open_seqid(status, res->seqid);
4392 if (!status)
4393 status = decode_invalid_stateid(xdr, &res->stateid);
4394 return status;
4395}
4396
4397static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4398{
4399 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4400}
4401
4402static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4403{
4404 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4405}
4406
4407static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4408{
4409 struct nfs_writeverf *verf = res->verf;
4410 int status;
4411
4412 status = decode_op_hdr(xdr, OP_COMMIT);
4413 if (!status)
4414 status = decode_write_verifier(xdr, &verf->verifier);
4415 if (!status)
4416 verf->committed = NFS_FILE_SYNC;
4417 return status;
4418}
4419
4420static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4421{
4422 __be32 *p;
4423 uint32_t bmlen;
4424 int status;
4425
4426 status = decode_op_hdr(xdr, OP_CREATE);
4427 if (status)
4428 return status;
4429 if ((status = decode_change_info(xdr, cinfo)))
4430 return status;
4431 p = xdr_inline_decode(xdr, 4);
4432 if (unlikely(!p))
4433 return -EIO;
4434 bmlen = be32_to_cpup(p);
4435 p = xdr_inline_decode(xdr, bmlen << 2);
4436 if (likely(p))
4437 return 0;
4438 return -EIO;
4439}
4440
4441static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4442{
4443 unsigned int savep;
4444 uint32_t attrlen, bitmap[3] = {0};
4445 int status;
4446
4447 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4448 goto xdr_error;
4449 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4450 goto xdr_error;
4451 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4452 goto xdr_error;
4453 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4454 goto xdr_error;
4455 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4456 &res->fh_expire_type)) != 0)
4457 goto xdr_error;
4458 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4459 goto xdr_error;
4460 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4461 goto xdr_error;
4462 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4463 goto xdr_error;
4464 if ((status = decode_attr_case_insensitive(xdr, bitmap, &res->case_insensitive)) != 0)
4465 goto xdr_error;
4466 if ((status = decode_attr_case_preserving(xdr, bitmap, &res->case_preserving)) != 0)
4467 goto xdr_error;
4468 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4469 res->exclcreat_bitmask)) != 0)
4470 goto xdr_error;
4471 status = verify_attr_len(xdr, savep, attrlen);
4472xdr_error:
4473 dprintk("%s: xdr returned %d!\n", __func__, -status);
4474 return status;
4475}
4476
4477static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4478{
4479 unsigned int savep;
4480 uint32_t attrlen, bitmap[3] = {0};
4481 int status;
4482
4483 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4484 goto xdr_error;
4485 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4486 goto xdr_error;
4487 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4488 goto xdr_error;
4489
4490 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4491 goto xdr_error;
4492 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4493 goto xdr_error;
4494 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4495 goto xdr_error;
4496
4497 status = -EIO;
4498 if (unlikely(bitmap[0]))
4499 goto xdr_error;
4500
4501 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4502 goto xdr_error;
4503 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4504 goto xdr_error;
4505 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4506 goto xdr_error;
4507
4508 status = verify_attr_len(xdr, savep, attrlen);
4509xdr_error:
4510 dprintk("%s: xdr returned %d!\n", __func__, -status);
4511 return status;
4512}
4513
4514static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4515{
4516 unsigned int savep;
4517 uint32_t attrlen, bitmap[3] = {0};
4518 int status;
4519
4520 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4521 goto xdr_error;
4522 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4523 goto xdr_error;
4524 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4525 goto xdr_error;
4526
4527 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4528 goto xdr_error;
4529 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4530 goto xdr_error;
4531
4532 status = verify_attr_len(xdr, savep, attrlen);
4533xdr_error:
4534 dprintk("%s: xdr returned %d!\n", __func__, -status);
4535 return status;
4536}
4537
4538static int decode_threshold_hint(struct xdr_stream *xdr,
4539 uint32_t *bitmap,
4540 uint64_t *res,
4541 uint32_t hint_bit)
4542{
4543 __be32 *p;
4544
4545 *res = 0;
4546 if (likely(bitmap[0] & hint_bit)) {
4547 p = xdr_inline_decode(xdr, 8);
4548 if (unlikely(!p))
4549 return -EIO;
4550 xdr_decode_hyper(p, res);
4551 }
4552 return 0;
4553}
4554
4555static int decode_first_threshold_item4(struct xdr_stream *xdr,
4556 struct nfs4_threshold *res)
4557{
4558 __be32 *p;
4559 unsigned int savep;
4560 uint32_t bitmap[3] = {0,}, attrlen;
4561 int status;
4562
4563 /* layout type */
4564 p = xdr_inline_decode(xdr, 4);
4565 if (unlikely(!p))
4566 return -EIO;
4567 res->l_type = be32_to_cpup(p);
4568
4569 /* thi_hintset bitmap */
4570 status = decode_attr_bitmap(xdr, bitmap);
4571 if (status < 0)
4572 goto xdr_error;
4573
4574 /* thi_hintlist length */
4575 status = decode_attr_length(xdr, &attrlen, &savep);
4576 if (status < 0)
4577 goto xdr_error;
4578 /* thi_hintlist */
4579 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4580 if (status < 0)
4581 goto xdr_error;
4582 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4583 if (status < 0)
4584 goto xdr_error;
4585 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4586 THRESHOLD_RD_IO);
4587 if (status < 0)
4588 goto xdr_error;
4589 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4590 THRESHOLD_WR_IO);
4591 if (status < 0)
4592 goto xdr_error;
4593
4594 status = verify_attr_len(xdr, savep, attrlen);
4595 res->bm = bitmap[0];
4596
4597 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4598 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4599 res->wr_io_sz);
4600xdr_error:
4601 dprintk("%s ret=%d!\n", __func__, status);
4602 return status;
4603}
4604
4605/*
4606 * Thresholds on pNFS direct I/O vrs MDS I/O
4607 */
4608static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4609 uint32_t *bitmap,
4610 struct nfs4_threshold *res)
4611{
4612 __be32 *p;
4613 int status = 0;
4614 uint32_t num;
4615
4616 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4617 return -EIO;
4618 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4619 /* Did the server return an unrequested attribute? */
4620 if (unlikely(res == NULL))
4621 return -EREMOTEIO;
4622 p = xdr_inline_decode(xdr, 4);
4623 if (unlikely(!p))
4624 return -EIO;
4625 num = be32_to_cpup(p);
4626 if (num == 0)
4627 return 0;
4628 if (num > 1)
4629 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4630 "drivers per filesystem not supported\n",
4631 __func__);
4632
4633 status = decode_first_threshold_item4(xdr, res);
4634 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4635 }
4636 return status;
4637}
4638
4639static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4640 struct nfs_fattr *fattr, struct nfs_fh *fh,
4641 struct nfs4_fs_locations *fs_loc, const struct nfs_server *server)
4642{
4643 int status;
4644 umode_t fmode = 0;
4645 uint32_t type;
4646 int32_t err;
4647
4648 status = decode_attr_type(xdr, bitmap, &type);
4649 if (status < 0)
4650 goto xdr_error;
4651 fattr->mode = 0;
4652 if (status != 0) {
4653 fattr->mode |= nfs_type2fmt[type];
4654 fattr->valid |= status;
4655 }
4656
4657 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4658 if (status < 0)
4659 goto xdr_error;
4660 fattr->valid |= status;
4661
4662 status = decode_attr_size(xdr, bitmap, &fattr->size);
4663 if (status < 0)
4664 goto xdr_error;
4665 fattr->valid |= status;
4666
4667 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4668 if (status < 0)
4669 goto xdr_error;
4670 fattr->valid |= status;
4671
4672 err = 0;
4673 status = decode_attr_error(xdr, bitmap, &err);
4674 if (status < 0)
4675 goto xdr_error;
4676
4677 status = decode_attr_filehandle(xdr, bitmap, fh);
4678 if (status < 0)
4679 goto xdr_error;
4680
4681 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4682 if (status < 0)
4683 goto xdr_error;
4684 fattr->valid |= status;
4685
4686 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4687 if (status < 0)
4688 goto xdr_error;
4689 fattr->valid |= status;
4690
4691 status = -EIO;
4692 if (unlikely(bitmap[0]))
4693 goto xdr_error;
4694
4695 status = decode_attr_mode(xdr, bitmap, &fmode);
4696 if (status < 0)
4697 goto xdr_error;
4698 if (status != 0) {
4699 fattr->mode |= fmode;
4700 fattr->valid |= status;
4701 }
4702
4703 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4704 if (status < 0)
4705 goto xdr_error;
4706 fattr->valid |= status;
4707
4708 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4709 if (status < 0)
4710 goto xdr_error;
4711 fattr->valid |= status;
4712
4713 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4714 if (status < 0)
4715 goto xdr_error;
4716 fattr->valid |= status;
4717
4718 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4719 if (status < 0)
4720 goto xdr_error;
4721 fattr->valid |= status;
4722
4723 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4724 if (status < 0)
4725 goto xdr_error;
4726 fattr->valid |= status;
4727
4728 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4729 if (status < 0)
4730 goto xdr_error;
4731 fattr->valid |= status;
4732
4733 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4734 if (status < 0)
4735 goto xdr_error;
4736 fattr->valid |= status;
4737
4738 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4739 if (status < 0)
4740 goto xdr_error;
4741 fattr->valid |= status;
4742
4743 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4744 if (status < 0)
4745 goto xdr_error;
4746 fattr->valid |= status;
4747
4748 status = -EIO;
4749 if (unlikely(bitmap[1]))
4750 goto xdr_error;
4751
4752 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4753 if (status < 0)
4754 goto xdr_error;
4755
4756 status = decode_attr_security_label(xdr, bitmap, fattr->label);
4757 if (status < 0)
4758 goto xdr_error;
4759 fattr->valid |= status;
4760
4761xdr_error:
4762 dprintk("%s: xdr returned %d\n", __func__, -status);
4763 return status;
4764}
4765
4766static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4767 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4768 const struct nfs_server *server)
4769{
4770 unsigned int savep;
4771 uint32_t attrlen,
4772 bitmap[3] = {0};
4773 int status;
4774
4775 status = decode_op_hdr(xdr, OP_GETATTR);
4776 if (status < 0)
4777 goto xdr_error;
4778
4779 status = decode_attr_bitmap(xdr, bitmap);
4780 if (status < 0)
4781 goto xdr_error;
4782
4783 status = decode_attr_length(xdr, &attrlen, &savep);
4784 if (status < 0)
4785 goto xdr_error;
4786
4787 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4788 if (status < 0)
4789 goto xdr_error;
4790
4791 status = verify_attr_len(xdr, savep, attrlen);
4792xdr_error:
4793 dprintk("%s: xdr returned %d\n", __func__, -status);
4794 return status;
4795}
4796
4797static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4798 const struct nfs_server *server)
4799{
4800 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4801}
4802
4803/*
4804 * Decode potentially multiple layout types.
4805 */
4806static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4807 struct nfs_fsinfo *fsinfo)
4808{
4809 __be32 *p;
4810 uint32_t i;
4811
4812 p = xdr_inline_decode(xdr, 4);
4813 if (unlikely(!p))
4814 return -EIO;
4815 fsinfo->nlayouttypes = be32_to_cpup(p);
4816
4817 /* pNFS is not supported by the underlying file system */
4818 if (fsinfo->nlayouttypes == 0)
4819 return 0;
4820
4821 /* Decode and set first layout type, move xdr->p past unused types */
4822 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4823 if (unlikely(!p))
4824 return -EIO;
4825
4826 /* If we get too many, then just cap it at the max */
4827 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4828 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4829 __func__, fsinfo->nlayouttypes);
4830 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4831 }
4832
4833 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4834 fsinfo->layouttype[i] = be32_to_cpup(p++);
4835 return 0;
4836}
4837
4838/*
4839 * The type of file system exported.
4840 * Note we must ensure that layouttype is set in any non-error case.
4841 */
4842static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4843 struct nfs_fsinfo *fsinfo)
4844{
4845 int status = 0;
4846
4847 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4848 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4849 return -EIO;
4850 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4851 status = decode_pnfs_layout_types(xdr, fsinfo);
4852 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4853 }
4854 return status;
4855}
4856
4857/*
4858 * The prefered block size for layout directed io
4859 */
4860static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4861 uint32_t *res)
4862{
4863 __be32 *p;
4864
4865 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4866 *res = 0;
4867 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4868 p = xdr_inline_decode(xdr, 4);
4869 if (unlikely(!p))
4870 return -EIO;
4871 *res = be32_to_cpup(p);
4872 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4873 }
4874 return 0;
4875}
4876
4877/*
4878 * The granularity of a CLONE operation.
4879 */
4880static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4881 uint32_t *res)
4882{
4883 __be32 *p;
4884
4885 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4886 *res = 0;
4887 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4888 p = xdr_inline_decode(xdr, 4);
4889 if (unlikely(!p))
4890 return -EIO;
4891 *res = be32_to_cpup(p);
4892 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4893 }
4894 return 0;
4895}
4896
4897static int decode_attr_change_attr_type(struct xdr_stream *xdr,
4898 uint32_t *bitmap,
4899 enum nfs4_change_attr_type *res)
4900{
4901 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4902
4903 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4904 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) {
4905 if (xdr_stream_decode_u32(xdr, &tmp))
4906 return -EIO;
4907 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE;
4908 }
4909
4910 switch(tmp) {
4911 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR:
4912 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER:
4913 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS:
4914 case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
4915 *res = tmp;
4916 break;
4917 default:
4918 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4919 }
4920 return 0;
4921}
4922
4923static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4924{
4925 unsigned int savep;
4926 uint32_t attrlen, bitmap[3];
4927 int status;
4928
4929 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4930 goto xdr_error;
4931 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4932 goto xdr_error;
4933 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4934 goto xdr_error;
4935
4936 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4937
4938 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4939 goto xdr_error;
4940 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4941 goto xdr_error;
4942 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4943 goto xdr_error;
4944 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4945 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4946 goto xdr_error;
4947 fsinfo->wtpref = fsinfo->wtmax;
4948
4949 status = -EIO;
4950 if (unlikely(bitmap[0]))
4951 goto xdr_error;
4952
4953 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4954 if (status != 0)
4955 goto xdr_error;
4956 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4957 if (status != 0)
4958 goto xdr_error;
4959
4960 status = -EIO;
4961 if (unlikely(bitmap[1]))
4962 goto xdr_error;
4963
4964 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4965 if (status)
4966 goto xdr_error;
4967 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4968 if (status)
4969 goto xdr_error;
4970
4971 status = decode_attr_change_attr_type(xdr, bitmap,
4972 &fsinfo->change_attr_type);
4973 if (status)
4974 goto xdr_error;
4975
4976 status = decode_attr_xattrsupport(xdr, bitmap,
4977 &fsinfo->xattr_support);
4978 if (status)
4979 goto xdr_error;
4980
4981 status = verify_attr_len(xdr, savep, attrlen);
4982xdr_error:
4983 dprintk("%s: xdr returned %d!\n", __func__, -status);
4984 return status;
4985}
4986
4987static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4988{
4989 __be32 *p;
4990 uint32_t len;
4991 int status;
4992
4993 /* Zero handle first to allow comparisons */
4994 memset(fh, 0, sizeof(*fh));
4995
4996 status = decode_op_hdr(xdr, OP_GETFH);
4997 if (status)
4998 return status;
4999
5000 p = xdr_inline_decode(xdr, 4);
5001 if (unlikely(!p))
5002 return -EIO;
5003 len = be32_to_cpup(p);
5004 if (len > NFS4_FHSIZE || len == 0) {
5005 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE);
5006 return -EREMOTEIO;
5007 }
5008 fh->size = len;
5009 p = xdr_inline_decode(xdr, len);
5010 if (unlikely(!p))
5011 return -EIO;
5012 memcpy(fh->data, p, len);
5013 return 0;
5014}
5015
5016static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5017{
5018 int status;
5019
5020 status = decode_op_hdr(xdr, OP_LINK);
5021 if (status)
5022 return status;
5023 return decode_change_info(xdr, cinfo);
5024}
5025
5026/*
5027 * We create the owner, so we know a proper owner.id length is 4.
5028 */
5029static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
5030{
5031 uint64_t offset, length, clientid;
5032 __be32 *p;
5033 uint32_t namelen, type;
5034
5035 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
5036 if (unlikely(!p))
5037 return -EIO;
5038 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
5039 p = xdr_decode_hyper(p, &length);
5040 type = be32_to_cpup(p++); /* 4 byte read */
5041 if (fl != NULL) { /* manipulate file lock */
5042 fl->fl_start = (loff_t)offset;
5043 fl->fl_end = fl->fl_start + (loff_t)length - 1;
5044 if (length == ~(uint64_t)0)
5045 fl->fl_end = OFFSET_MAX;
5046 fl->fl_type = F_WRLCK;
5047 if (type & 1)
5048 fl->fl_type = F_RDLCK;
5049 fl->fl_pid = 0;
5050 }
5051 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
5052 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5053 p = xdr_inline_decode(xdr, namelen); /* variable size field */
5054 if (likely(!p))
5055 return -EIO;
5056 return -NFS4ERR_DENIED;
5057}
5058
5059static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5060{
5061 int status;
5062
5063 status = decode_op_hdr(xdr, OP_LOCK);
5064 if (status == -EIO)
5065 goto out;
5066 if (status == 0) {
5067 status = decode_lock_stateid(xdr, &res->stateid);
5068 if (unlikely(status))
5069 goto out;
5070 } else if (status == -NFS4ERR_DENIED)
5071 status = decode_lock_denied(xdr, NULL);
5072 if (res->open_seqid != NULL)
5073 nfs_increment_open_seqid(status, res->open_seqid);
5074 nfs_increment_lock_seqid(status, res->lock_seqid);
5075out:
5076 return status;
5077}
5078
5079static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5080{
5081 int status;
5082 status = decode_op_hdr(xdr, OP_LOCKT);
5083 if (status == -NFS4ERR_DENIED)
5084 return decode_lock_denied(xdr, res->denied);
5085 return status;
5086}
5087
5088static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5089{
5090 int status;
5091
5092 status = decode_op_hdr(xdr, OP_LOCKU);
5093 if (status != -EIO)
5094 nfs_increment_lock_seqid(status, res->seqid);
5095 if (status == 0)
5096 status = decode_lock_stateid(xdr, &res->stateid);
5097 return status;
5098}
5099
5100static int decode_release_lockowner(struct xdr_stream *xdr)
5101{
5102 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5103}
5104
5105static int decode_lookup(struct xdr_stream *xdr)
5106{
5107 return decode_op_hdr(xdr, OP_LOOKUP);
5108}
5109
5110static int decode_lookupp(struct xdr_stream *xdr)
5111{
5112 return decode_op_hdr(xdr, OP_LOOKUPP);
5113}
5114
5115/* This is too sick! */
5116static int decode_space_limit(struct xdr_stream *xdr,
5117 unsigned long *pagemod_limit)
5118{
5119 __be32 *p;
5120 uint32_t limit_type, nblocks, blocksize;
5121 u64 maxsize = 0;
5122
5123 p = xdr_inline_decode(xdr, 12);
5124 if (unlikely(!p))
5125 return -EIO;
5126 limit_type = be32_to_cpup(p++);
5127 switch (limit_type) {
5128 case NFS4_LIMIT_SIZE:
5129 xdr_decode_hyper(p, &maxsize);
5130 break;
5131 case NFS4_LIMIT_BLOCKS:
5132 nblocks = be32_to_cpup(p++);
5133 blocksize = be32_to_cpup(p);
5134 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5135 }
5136 maxsize >>= PAGE_SHIFT;
5137 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5138 return 0;
5139}
5140
5141static int decode_rw_delegation(struct xdr_stream *xdr,
5142 uint32_t delegation_type,
5143 struct nfs_openres *res)
5144{
5145 __be32 *p;
5146 int status;
5147
5148 status = decode_delegation_stateid(xdr, &res->delegation);
5149 if (unlikely(status))
5150 return status;
5151 p = xdr_inline_decode(xdr, 4);
5152 if (unlikely(!p))
5153 return -EIO;
5154 res->do_recall = be32_to_cpup(p);
5155
5156 switch (delegation_type) {
5157 case NFS4_OPEN_DELEGATE_READ:
5158 res->delegation_type = FMODE_READ;
5159 break;
5160 case NFS4_OPEN_DELEGATE_WRITE:
5161 res->delegation_type = FMODE_WRITE|FMODE_READ;
5162 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5163 return -EIO;
5164 }
5165 return decode_ace(xdr, NULL);
5166}
5167
5168static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5169{
5170 __be32 *p;
5171 uint32_t why_no_delegation;
5172
5173 p = xdr_inline_decode(xdr, 4);
5174 if (unlikely(!p))
5175 return -EIO;
5176 why_no_delegation = be32_to_cpup(p);
5177 switch (why_no_delegation) {
5178 case WND4_CONTENTION:
5179 case WND4_RESOURCE:
5180 xdr_inline_decode(xdr, 4);
5181 /* Ignore for now */
5182 }
5183 return 0;
5184}
5185
5186static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5187{
5188 __be32 *p;
5189 uint32_t delegation_type;
5190
5191 p = xdr_inline_decode(xdr, 4);
5192 if (unlikely(!p))
5193 return -EIO;
5194 delegation_type = be32_to_cpup(p);
5195 res->delegation_type = 0;
5196 switch (delegation_type) {
5197 case NFS4_OPEN_DELEGATE_NONE:
5198 return 0;
5199 case NFS4_OPEN_DELEGATE_READ:
5200 case NFS4_OPEN_DELEGATE_WRITE:
5201 return decode_rw_delegation(xdr, delegation_type, res);
5202 case NFS4_OPEN_DELEGATE_NONE_EXT:
5203 return decode_no_delegation(xdr, res);
5204 }
5205 return -EIO;
5206}
5207
5208static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5209{
5210 __be32 *p;
5211 uint32_t savewords, bmlen, i;
5212 int status;
5213
5214 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5215 return status;
5216 nfs_increment_open_seqid(status, res->seqid);
5217 if (status)
5218 return status;
5219 status = decode_open_stateid(xdr, &res->stateid);
5220 if (unlikely(status))
5221 return status;
5222
5223 decode_change_info(xdr, &res->cinfo);
5224
5225 p = xdr_inline_decode(xdr, 8);
5226 if (unlikely(!p))
5227 return -EIO;
5228 res->rflags = be32_to_cpup(p++);
5229 bmlen = be32_to_cpup(p);
5230 if (bmlen > 10)
5231 goto xdr_error;
5232
5233 p = xdr_inline_decode(xdr, bmlen << 2);
5234 if (unlikely(!p))
5235 return -EIO;
5236 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5237 for (i = 0; i < savewords; ++i)
5238 res->attrset[i] = be32_to_cpup(p++);
5239 for (; i < NFS4_BITMAP_SIZE; i++)
5240 res->attrset[i] = 0;
5241
5242 return decode_delegation(xdr, res);
5243xdr_error:
5244 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5245 return -EIO;
5246}
5247
5248static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5249{
5250 int status;
5251
5252 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5253 if (status != -EIO)
5254 nfs_increment_open_seqid(status, res->seqid);
5255 if (!status)
5256 status = decode_open_stateid(xdr, &res->stateid);
5257 return status;
5258}
5259
5260static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5261{
5262 int status;
5263
5264 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5265 if (status != -EIO)
5266 nfs_increment_open_seqid(status, res->seqid);
5267 if (!status)
5268 status = decode_open_stateid(xdr, &res->stateid);
5269 return status;
5270}
5271
5272static int decode_putfh(struct xdr_stream *xdr)
5273{
5274 return decode_op_hdr(xdr, OP_PUTFH);
5275}
5276
5277static int decode_putrootfh(struct xdr_stream *xdr)
5278{
5279 return decode_op_hdr(xdr, OP_PUTROOTFH);
5280}
5281
5282static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5283 struct nfs_pgio_res *res)
5284{
5285 __be32 *p;
5286 uint32_t count, eof, recvd;
5287 int status;
5288
5289 status = decode_op_hdr(xdr, OP_READ);
5290 if (status)
5291 return status;
5292 p = xdr_inline_decode(xdr, 8);
5293 if (unlikely(!p))
5294 return -EIO;
5295 eof = be32_to_cpup(p++);
5296 count = be32_to_cpup(p);
5297 recvd = xdr_read_pages(xdr, count);
5298 if (count > recvd) {
5299 dprintk("NFS: server cheating in read reply: "
5300 "count %u > recvd %u\n", count, recvd);
5301 count = recvd;
5302 eof = 0;
5303 }
5304 res->eof = eof;
5305 res->count = count;
5306 return 0;
5307}
5308
5309static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5310{
5311 int status;
5312 __be32 verf[2];
5313
5314 status = decode_op_hdr(xdr, OP_READDIR);
5315 if (!status)
5316 status = decode_verifier(xdr, readdir->verifier.data);
5317 if (unlikely(status))
5318 return status;
5319 memcpy(verf, readdir->verifier.data, sizeof(verf));
5320 dprintk("%s: verifier = %08x:%08x\n",
5321 __func__, verf[0], verf[1]);
5322 return xdr_read_pages(xdr, xdr->buf->page_len);
5323}
5324
5325static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5326{
5327 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5328 u32 len, recvd;
5329 __be32 *p;
5330 int status;
5331
5332 status = decode_op_hdr(xdr, OP_READLINK);
5333 if (status)
5334 return status;
5335
5336 /* Convert length of symlink */
5337 p = xdr_inline_decode(xdr, 4);
5338 if (unlikely(!p))
5339 return -EIO;
5340 len = be32_to_cpup(p);
5341 if (len >= rcvbuf->page_len || len <= 0) {
5342 dprintk("nfs: server returned giant symlink!\n");
5343 return -ENAMETOOLONG;
5344 }
5345 recvd = xdr_read_pages(xdr, len);
5346 if (recvd < len) {
5347 dprintk("NFS: server cheating in readlink reply: "
5348 "count %u > recvd %u\n", len, recvd);
5349 return -EIO;
5350 }
5351 /*
5352 * The XDR encode routine has set things up so that
5353 * the link text will be copied directly into the
5354 * buffer. We just have to do overflow-checking,
5355 * and null-terminate the text (the VFS expects
5356 * null-termination).
5357 */
5358 xdr_terminate_string(rcvbuf, len);
5359 return 0;
5360}
5361
5362static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5363{
5364 int status;
5365
5366 status = decode_op_hdr(xdr, OP_REMOVE);
5367 if (status)
5368 goto out;
5369 status = decode_change_info(xdr, cinfo);
5370out:
5371 return status;
5372}
5373
5374static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5375 struct nfs4_change_info *new_cinfo)
5376{
5377 int status;
5378
5379 status = decode_op_hdr(xdr, OP_RENAME);
5380 if (status)
5381 goto out;
5382 if ((status = decode_change_info(xdr, old_cinfo)))
5383 goto out;
5384 status = decode_change_info(xdr, new_cinfo);
5385out:
5386 return status;
5387}
5388
5389static int decode_renew(struct xdr_stream *xdr)
5390{
5391 return decode_op_hdr(xdr, OP_RENEW);
5392}
5393
5394static int
5395decode_restorefh(struct xdr_stream *xdr)
5396{
5397 return decode_op_hdr(xdr, OP_RESTOREFH);
5398}
5399
5400static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5401 struct nfs_getaclres *res, enum nfs4_acl_type type)
5402{
5403 unsigned int savep;
5404 uint32_t attrlen,
5405 bitmap[3] = {0};
5406 int status;
5407
5408 res->acl_len = 0;
5409 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5410 goto out;
5411
5412 xdr_enter_page(xdr, xdr->buf->page_len);
5413
5414 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5415 goto out;
5416 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5417 goto out;
5418
5419 switch (type) {
5420 default:
5421 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5422 return -EIO;
5423 if (!(bitmap[0] & FATTR4_WORD0_ACL))
5424 return -EOPNOTSUPP;
5425 break;
5426 case NFS4ACL_DACL:
5427 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_DACL - 1U)))
5428 return -EIO;
5429 if (!(bitmap[1] & FATTR4_WORD1_DACL))
5430 return -EOPNOTSUPP;
5431 break;
5432 case NFS4ACL_SACL:
5433 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_SACL - 1U)))
5434 return -EIO;
5435 if (!(bitmap[1] & FATTR4_WORD1_SACL))
5436 return -EOPNOTSUPP;
5437 }
5438
5439 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5440 * are stored with the acl data to handle the problem of
5441 * variable length bitmaps.*/
5442 res->acl_data_offset = xdr_page_pos(xdr);
5443 res->acl_len = attrlen;
5444
5445 /* Check for receive buffer overflow */
5446 if (res->acl_len > xdr_stream_remaining(xdr) ||
5447 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5448 res->acl_flags |= NFS4_ACL_TRUNC;
5449 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5450 attrlen, xdr_stream_remaining(xdr));
5451 }
5452out:
5453 return status;
5454}
5455
5456static int
5457decode_savefh(struct xdr_stream *xdr)
5458{
5459 return decode_op_hdr(xdr, OP_SAVEFH);
5460}
5461
5462static int decode_setattr(struct xdr_stream *xdr)
5463{
5464 int status;
5465
5466 status = decode_op_hdr(xdr, OP_SETATTR);
5467 if (status)
5468 return status;
5469 if (decode_bitmap4(xdr, NULL, 0) >= 0)
5470 return 0;
5471 return -EIO;
5472}
5473
5474static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5475{
5476 __be32 *p;
5477 uint32_t opnum;
5478 int32_t nfserr;
5479
5480 p = xdr_inline_decode(xdr, 8);
5481 if (unlikely(!p))
5482 return -EIO;
5483 opnum = be32_to_cpup(p++);
5484 if (opnum != OP_SETCLIENTID) {
5485 dprintk("nfs: decode_setclientid: Server returned operation"
5486 " %d\n", opnum);
5487 return -EIO;
5488 }
5489 nfserr = be32_to_cpup(p);
5490 if (nfserr == NFS_OK) {
5491 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5492 if (unlikely(!p))
5493 return -EIO;
5494 p = xdr_decode_hyper(p, &res->clientid);
5495 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5496 } else if (nfserr == NFSERR_CLID_INUSE) {
5497 uint32_t len;
5498
5499 /* skip netid string */
5500 p = xdr_inline_decode(xdr, 4);
5501 if (unlikely(!p))
5502 return -EIO;
5503 len = be32_to_cpup(p);
5504 p = xdr_inline_decode(xdr, len);
5505 if (unlikely(!p))
5506 return -EIO;
5507
5508 /* skip uaddr string */
5509 p = xdr_inline_decode(xdr, 4);
5510 if (unlikely(!p))
5511 return -EIO;
5512 len = be32_to_cpup(p);
5513 p = xdr_inline_decode(xdr, len);
5514 if (unlikely(!p))
5515 return -EIO;
5516 return -NFSERR_CLID_INUSE;
5517 } else
5518 return nfs4_stat_to_errno(nfserr);
5519
5520 return 0;
5521}
5522
5523static int decode_setclientid_confirm(struct xdr_stream *xdr)
5524{
5525 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5526}
5527
5528static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5529{
5530 __be32 *p;
5531 int status;
5532
5533 status = decode_op_hdr(xdr, OP_WRITE);
5534 if (status)
5535 return status;
5536
5537 p = xdr_inline_decode(xdr, 8);
5538 if (unlikely(!p))
5539 return -EIO;
5540 res->count = be32_to_cpup(p++);
5541 res->verf->committed = be32_to_cpup(p++);
5542 return decode_write_verifier(xdr, &res->verf->verifier);
5543}
5544
5545static int decode_delegreturn(struct xdr_stream *xdr)
5546{
5547 return decode_op_hdr(xdr, OP_DELEGRETURN);
5548}
5549
5550static int decode_secinfo_gss(struct xdr_stream *xdr,
5551 struct nfs4_secinfo4 *flavor)
5552{
5553 u32 oid_len;
5554 __be32 *p;
5555
5556 p = xdr_inline_decode(xdr, 4);
5557 if (unlikely(!p))
5558 return -EIO;
5559 oid_len = be32_to_cpup(p);
5560 if (oid_len > GSS_OID_MAX_LEN)
5561 return -EINVAL;
5562
5563 p = xdr_inline_decode(xdr, oid_len);
5564 if (unlikely(!p))
5565 return -EIO;
5566 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5567 flavor->flavor_info.oid.len = oid_len;
5568
5569 p = xdr_inline_decode(xdr, 8);
5570 if (unlikely(!p))
5571 return -EIO;
5572 flavor->flavor_info.qop = be32_to_cpup(p++);
5573 flavor->flavor_info.service = be32_to_cpup(p);
5574
5575 return 0;
5576}
5577
5578static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5579{
5580 struct nfs4_secinfo4 *sec_flavor;
5581 unsigned int i, num_flavors;
5582 int status;
5583 __be32 *p;
5584
5585 p = xdr_inline_decode(xdr, 4);
5586 if (unlikely(!p))
5587 return -EIO;
5588
5589 res->flavors->num_flavors = 0;
5590 num_flavors = be32_to_cpup(p);
5591
5592 for (i = 0; i < num_flavors; i++) {
5593 sec_flavor = &res->flavors->flavors[i];
5594 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5595 break;
5596
5597 p = xdr_inline_decode(xdr, 4);
5598 if (unlikely(!p))
5599 return -EIO;
5600 sec_flavor->flavor = be32_to_cpup(p);
5601
5602 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5603 status = decode_secinfo_gss(xdr, sec_flavor);
5604 if (status)
5605 goto out;
5606 }
5607 res->flavors->num_flavors++;
5608 }
5609
5610 status = 0;
5611out:
5612 return status;
5613}
5614
5615static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5616{
5617 int status = decode_op_hdr(xdr, OP_SECINFO);
5618 if (status)
5619 return status;
5620 return decode_secinfo_common(xdr, res);
5621}
5622
5623#if defined(CONFIG_NFS_V4_1)
5624static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5625{
5626 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5627 if (status)
5628 return status;
5629 return decode_secinfo_common(xdr, res);
5630}
5631
5632static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5633{
5634 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words,
5635 ARRAY_SIZE(op_map->u.words)) < 0)
5636 return -EIO;
5637 return 0;
5638}
5639
5640static int decode_exchange_id(struct xdr_stream *xdr,
5641 struct nfs41_exchange_id_res *res)
5642{
5643 __be32 *p;
5644 uint32_t dummy;
5645 char *dummy_str;
5646 int status;
5647 uint32_t impl_id_count;
5648
5649 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5650 if (status)
5651 return status;
5652
5653 p = xdr_inline_decode(xdr, 8);
5654 if (unlikely(!p))
5655 return -EIO;
5656 xdr_decode_hyper(p, &res->clientid);
5657 p = xdr_inline_decode(xdr, 12);
5658 if (unlikely(!p))
5659 return -EIO;
5660 res->seqid = be32_to_cpup(p++);
5661 res->flags = be32_to_cpup(p++);
5662
5663 res->state_protect.how = be32_to_cpup(p);
5664 switch (res->state_protect.how) {
5665 case SP4_NONE:
5666 break;
5667 case SP4_MACH_CRED:
5668 status = decode_op_map(xdr, &res->state_protect.enforce);
5669 if (status)
5670 return status;
5671 status = decode_op_map(xdr, &res->state_protect.allow);
5672 if (status)
5673 return status;
5674 break;
5675 default:
5676 WARN_ON_ONCE(1);
5677 return -EIO;
5678 }
5679
5680 /* server_owner4.so_minor_id */
5681 p = xdr_inline_decode(xdr, 8);
5682 if (unlikely(!p))
5683 return -EIO;
5684 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5685
5686 /* server_owner4.so_major_id */
5687 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5688 if (unlikely(status))
5689 return status;
5690 memcpy(res->server_owner->major_id, dummy_str, dummy);
5691 res->server_owner->major_id_sz = dummy;
5692
5693 /* server_scope4 */
5694 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5695 if (unlikely(status))
5696 return status;
5697 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5698 res->server_scope->server_scope_sz = dummy;
5699
5700 /* Implementation Id */
5701 p = xdr_inline_decode(xdr, 4);
5702 if (unlikely(!p))
5703 return -EIO;
5704 impl_id_count = be32_to_cpup(p++);
5705
5706 if (impl_id_count) {
5707 /* nii_domain */
5708 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5709 if (unlikely(status))
5710 return status;
5711 memcpy(res->impl_id->domain, dummy_str, dummy);
5712
5713 /* nii_name */
5714 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5715 if (unlikely(status))
5716 return status;
5717 memcpy(res->impl_id->name, dummy_str, dummy);
5718
5719 /* nii_date */
5720 p = xdr_inline_decode(xdr, 12);
5721 if (unlikely(!p))
5722 return -EIO;
5723 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5724 res->impl_id->date.nseconds = be32_to_cpup(p);
5725
5726 /* if there's more than one entry, ignore the rest */
5727 }
5728 return 0;
5729}
5730
5731static int decode_chan_attrs(struct xdr_stream *xdr,
5732 struct nfs4_channel_attrs *attrs)
5733{
5734 __be32 *p;
5735 u32 nr_attrs, val;
5736
5737 p = xdr_inline_decode(xdr, 28);
5738 if (unlikely(!p))
5739 return -EIO;
5740 val = be32_to_cpup(p++); /* headerpadsz */
5741 if (val)
5742 return -EINVAL; /* no support for header padding yet */
5743 attrs->max_rqst_sz = be32_to_cpup(p++);
5744 attrs->max_resp_sz = be32_to_cpup(p++);
5745 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5746 attrs->max_ops = be32_to_cpup(p++);
5747 attrs->max_reqs = be32_to_cpup(p++);
5748 nr_attrs = be32_to_cpup(p);
5749 if (unlikely(nr_attrs > 1)) {
5750 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5751 "count %u\n", __func__, nr_attrs);
5752 return -EINVAL;
5753 }
5754 if (nr_attrs == 1) {
5755 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5756 if (unlikely(!p))
5757 return -EIO;
5758 }
5759 return 0;
5760}
5761
5762static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5763{
5764 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5765}
5766
5767static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5768 struct nfs41_bind_conn_to_session_res *res)
5769{
5770 __be32 *p;
5771 int status;
5772
5773 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5774 if (!status)
5775 status = decode_sessionid(xdr, &res->sessionid);
5776 if (unlikely(status))
5777 return status;
5778
5779 /* dir flags, rdma mode bool */
5780 p = xdr_inline_decode(xdr, 8);
5781 if (unlikely(!p))
5782 return -EIO;
5783
5784 res->dir = be32_to_cpup(p++);
5785 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5786 return -EIO;
5787 if (be32_to_cpup(p) == 0)
5788 res->use_conn_in_rdma_mode = false;
5789 else
5790 res->use_conn_in_rdma_mode = true;
5791
5792 return 0;
5793}
5794
5795static int decode_create_session(struct xdr_stream *xdr,
5796 struct nfs41_create_session_res *res)
5797{
5798 __be32 *p;
5799 int status;
5800
5801 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5802 if (!status)
5803 status = decode_sessionid(xdr, &res->sessionid);
5804 if (unlikely(status))
5805 return status;
5806
5807 /* seqid, flags */
5808 p = xdr_inline_decode(xdr, 8);
5809 if (unlikely(!p))
5810 return -EIO;
5811 res->seqid = be32_to_cpup(p++);
5812 res->flags = be32_to_cpup(p);
5813
5814 /* Channel attributes */
5815 status = decode_chan_attrs(xdr, &res->fc_attrs);
5816 if (!status)
5817 status = decode_chan_attrs(xdr, &res->bc_attrs);
5818 return status;
5819}
5820
5821static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5822{
5823 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5824}
5825
5826static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5827{
5828 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5829}
5830
5831static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5832{
5833 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5834}
5835#endif /* CONFIG_NFS_V4_1 */
5836
5837static int decode_sequence(struct xdr_stream *xdr,
5838 struct nfs4_sequence_res *res,
5839 struct rpc_rqst *rqstp)
5840{
5841#if defined(CONFIG_NFS_V4_1)
5842 struct nfs4_session *session;
5843 struct nfs4_sessionid id;
5844 u32 dummy;
5845 int status;
5846 __be32 *p;
5847
5848 if (res->sr_slot == NULL)
5849 return 0;
5850 if (!res->sr_slot->table->session)
5851 return 0;
5852
5853 status = decode_op_hdr(xdr, OP_SEQUENCE);
5854 if (!status)
5855 status = decode_sessionid(xdr, &id);
5856 if (unlikely(status))
5857 goto out_err;
5858
5859 /*
5860 * If the server returns different values for sessionID, slotID or
5861 * sequence number, the server is looney tunes.
5862 */
5863 status = -EREMOTEIO;
5864 session = res->sr_slot->table->session;
5865
5866 if (memcmp(id.data, session->sess_id.data,
5867 NFS4_MAX_SESSIONID_LEN)) {
5868 dprintk("%s Invalid session id\n", __func__);
5869 goto out_err;
5870 }
5871
5872 p = xdr_inline_decode(xdr, 20);
5873 if (unlikely(!p))
5874 goto out_overflow;
5875
5876 /* seqid */
5877 dummy = be32_to_cpup(p++);
5878 if (dummy != res->sr_slot->seq_nr) {
5879 dprintk("%s Invalid sequence number\n", __func__);
5880 goto out_err;
5881 }
5882 /* slot id */
5883 dummy = be32_to_cpup(p++);
5884 if (dummy != res->sr_slot->slot_nr) {
5885 dprintk("%s Invalid slot id\n", __func__);
5886 goto out_err;
5887 }
5888 /* highest slot id */
5889 res->sr_highest_slotid = be32_to_cpup(p++);
5890 /* target highest slot id */
5891 res->sr_target_highest_slotid = be32_to_cpup(p++);
5892 /* result flags */
5893 res->sr_status_flags = be32_to_cpup(p);
5894 status = 0;
5895out_err:
5896 res->sr_status = status;
5897 return status;
5898out_overflow:
5899 status = -EIO;
5900 goto out_err;
5901#else /* CONFIG_NFS_V4_1 */
5902 return 0;
5903#endif /* CONFIG_NFS_V4_1 */
5904}
5905
5906#if defined(CONFIG_NFS_V4_1)
5907static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5908{
5909 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5910 return decode_stateid(xdr, stateid);
5911}
5912
5913static int decode_getdeviceinfo(struct xdr_stream *xdr,
5914 struct nfs4_getdeviceinfo_res *res)
5915{
5916 struct pnfs_device *pdev = res->pdev;
5917 __be32 *p;
5918 uint32_t len, type;
5919 int status;
5920
5921 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5922 if (status) {
5923 if (status == -ETOOSMALL) {
5924 p = xdr_inline_decode(xdr, 4);
5925 if (unlikely(!p))
5926 return -EIO;
5927 pdev->mincount = be32_to_cpup(p);
5928 dprintk("%s: Min count too small. mincnt = %u\n",
5929 __func__, pdev->mincount);
5930 }
5931 return status;
5932 }
5933
5934 p = xdr_inline_decode(xdr, 8);
5935 if (unlikely(!p))
5936 return -EIO;
5937 type = be32_to_cpup(p++);
5938 if (type != pdev->layout_type) {
5939 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5940 __func__, pdev->layout_type, type);
5941 return -EINVAL;
5942 }
5943 /*
5944 * Get the length of the opaque device_addr4. xdr_read_pages places
5945 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5946 * and places the remaining xdr data in xdr_buf->tail
5947 */
5948 pdev->mincount = be32_to_cpup(p);
5949 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5950 return -EIO;
5951
5952 /* Parse notification bitmap, verifying that it is zero. */
5953 p = xdr_inline_decode(xdr, 4);
5954 if (unlikely(!p))
5955 return -EIO;
5956 len = be32_to_cpup(p);
5957 if (len) {
5958 uint32_t i;
5959
5960 p = xdr_inline_decode(xdr, 4 * len);
5961 if (unlikely(!p))
5962 return -EIO;
5963
5964 res->notification = be32_to_cpup(p++);
5965 for (i = 1; i < len; i++) {
5966 if (be32_to_cpup(p++)) {
5967 dprintk("%s: unsupported notification\n",
5968 __func__);
5969 return -EIO;
5970 }
5971 }
5972 }
5973 return 0;
5974}
5975
5976static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5977 struct nfs4_layoutget_res *res)
5978{
5979 __be32 *p;
5980 int status;
5981 u32 layout_count;
5982 u32 recvd;
5983
5984 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5985 if (status)
5986 goto out;
5987 p = xdr_inline_decode(xdr, 4);
5988 if (unlikely(!p))
5989 goto out_overflow;
5990 res->return_on_close = be32_to_cpup(p);
5991 decode_layout_stateid(xdr, &res->stateid);
5992 p = xdr_inline_decode(xdr, 4);
5993 if (unlikely(!p))
5994 goto out_overflow;
5995 layout_count = be32_to_cpup(p);
5996 if (!layout_count) {
5997 dprintk("%s: server responded with empty layout array\n",
5998 __func__);
5999 status = -EINVAL;
6000 goto out;
6001 }
6002
6003 p = xdr_inline_decode(xdr, 28);
6004 if (unlikely(!p))
6005 goto out_overflow;
6006 p = xdr_decode_hyper(p, &res->range.offset);
6007 p = xdr_decode_hyper(p, &res->range.length);
6008 res->range.iomode = be32_to_cpup(p++);
6009 res->type = be32_to_cpup(p++);
6010 res->layoutp->len = be32_to_cpup(p);
6011
6012 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
6013 __func__,
6014 (unsigned long)res->range.offset,
6015 (unsigned long)res->range.length,
6016 res->range.iomode,
6017 res->type,
6018 res->layoutp->len);
6019
6020 recvd = xdr_read_pages(xdr, res->layoutp->len);
6021 if (res->layoutp->len > recvd) {
6022 dprintk("NFS: server cheating in layoutget reply: "
6023 "layout len %u > recvd %u\n",
6024 res->layoutp->len, recvd);
6025 status = -EINVAL;
6026 goto out;
6027 }
6028
6029 if (layout_count > 1) {
6030 /* We only handle a length one array at the moment. Any
6031 * further entries are just ignored. Note that this means
6032 * the client may see a response that is less than the
6033 * minimum it requested.
6034 */
6035 dprintk("%s: server responded with %d layouts, dropping tail\n",
6036 __func__, layout_count);
6037 }
6038
6039out:
6040 res->status = status;
6041 return status;
6042out_overflow:
6043 status = -EIO;
6044 goto out;
6045}
6046
6047static int decode_layoutreturn(struct xdr_stream *xdr,
6048 struct nfs4_layoutreturn_res *res)
6049{
6050 __be32 *p;
6051 int status;
6052
6053 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6054 if (status)
6055 return status;
6056 p = xdr_inline_decode(xdr, 4);
6057 if (unlikely(!p))
6058 return -EIO;
6059 res->lrs_present = be32_to_cpup(p);
6060 if (res->lrs_present)
6061 status = decode_layout_stateid(xdr, &res->stateid);
6062 else
6063 nfs4_stateid_copy(&res->stateid, &invalid_stateid);
6064 return status;
6065}
6066
6067static int decode_layoutcommit(struct xdr_stream *xdr,
6068 struct rpc_rqst *req,
6069 struct nfs4_layoutcommit_res *res)
6070{
6071 __be32 *p;
6072 __u32 sizechanged;
6073 int status;
6074
6075 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6076 res->status = status;
6077 if (status)
6078 return status;
6079
6080 p = xdr_inline_decode(xdr, 4);
6081 if (unlikely(!p))
6082 return -EIO;
6083 sizechanged = be32_to_cpup(p);
6084
6085 if (sizechanged) {
6086 /* throw away new size */
6087 p = xdr_inline_decode(xdr, 8);
6088 if (unlikely(!p))
6089 return -EIO;
6090 }
6091 return 0;
6092}
6093
6094static int decode_test_stateid(struct xdr_stream *xdr,
6095 struct nfs41_test_stateid_res *res)
6096{
6097 __be32 *p;
6098 int status;
6099 int num_res;
6100
6101 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6102 if (status)
6103 return status;
6104
6105 p = xdr_inline_decode(xdr, 4);
6106 if (unlikely(!p))
6107 return -EIO;
6108 num_res = be32_to_cpup(p++);
6109 if (num_res != 1)
6110 return -EIO;
6111
6112 p = xdr_inline_decode(xdr, 4);
6113 if (unlikely(!p))
6114 return -EIO;
6115 res->status = be32_to_cpup(p++);
6116
6117 return status;
6118}
6119
6120static int decode_free_stateid(struct xdr_stream *xdr,
6121 struct nfs41_free_stateid_res *res)
6122{
6123 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6124 return res->status;
6125}
6126#else
6127static inline
6128int decode_layoutreturn(struct xdr_stream *xdr,
6129 struct nfs4_layoutreturn_res *res)
6130{
6131 return 0;
6132}
6133
6134static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6135 struct nfs4_layoutget_res *res)
6136{
6137 return 0;
6138}
6139
6140#endif /* CONFIG_NFS_V4_1 */
6141
6142/*
6143 * END OF "GENERIC" DECODE ROUTINES.
6144 */
6145
6146/*
6147 * Decode OPEN_DOWNGRADE response
6148 */
6149static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6150 struct xdr_stream *xdr,
6151 void *data)
6152{
6153 struct nfs_closeres *res = data;
6154 struct compound_hdr hdr;
6155 int status;
6156
6157 status = decode_compound_hdr(xdr, &hdr);
6158 if (status)
6159 goto out;
6160 status = decode_sequence(xdr, &res->seq_res, rqstp);
6161 if (status)
6162 goto out;
6163 status = decode_putfh(xdr);
6164 if (status)
6165 goto out;
6166 if (res->lr_res) {
6167 status = decode_layoutreturn(xdr, res->lr_res);
6168 res->lr_ret = status;
6169 if (status)
6170 goto out;
6171 }
6172 status = decode_open_downgrade(xdr, res);
6173out:
6174 return status;
6175}
6176
6177/*
6178 * Decode ACCESS response
6179 */
6180static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6181 void *data)
6182{
6183 struct nfs4_accessres *res = data;
6184 struct compound_hdr hdr;
6185 int status;
6186
6187 status = decode_compound_hdr(xdr, &hdr);
6188 if (status)
6189 goto out;
6190 status = decode_sequence(xdr, &res->seq_res, rqstp);
6191 if (status)
6192 goto out;
6193 status = decode_putfh(xdr);
6194 if (status != 0)
6195 goto out;
6196 status = decode_access(xdr, &res->supported, &res->access);
6197 if (status != 0)
6198 goto out;
6199 if (res->fattr)
6200 decode_getfattr(xdr, res->fattr, res->server);
6201out:
6202 return status;
6203}
6204
6205/*
6206 * Decode LOOKUP response
6207 */
6208static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6209 void *data)
6210{
6211 struct nfs4_lookup_res *res = data;
6212 struct compound_hdr hdr;
6213 int status;
6214
6215 status = decode_compound_hdr(xdr, &hdr);
6216 if (status)
6217 goto out;
6218 status = decode_sequence(xdr, &res->seq_res, rqstp);
6219 if (status)
6220 goto out;
6221 status = decode_putfh(xdr);
6222 if (status)
6223 goto out;
6224 status = decode_lookup(xdr);
6225 if (status)
6226 goto out;
6227 status = decode_getfh(xdr, res->fh);
6228 if (status)
6229 goto out;
6230 status = decode_getfattr(xdr, res->fattr, res->server);
6231out:
6232 return status;
6233}
6234
6235/*
6236 * Decode LOOKUPP response
6237 */
6238static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6239 void *data)
6240{
6241 struct nfs4_lookupp_res *res = data;
6242 struct compound_hdr hdr;
6243 int status;
6244
6245 status = decode_compound_hdr(xdr, &hdr);
6246 if (status)
6247 goto out;
6248 status = decode_sequence(xdr, &res->seq_res, rqstp);
6249 if (status)
6250 goto out;
6251 status = decode_putfh(xdr);
6252 if (status)
6253 goto out;
6254 status = decode_lookupp(xdr);
6255 if (status)
6256 goto out;
6257 status = decode_getfh(xdr, res->fh);
6258 if (status)
6259 goto out;
6260 status = decode_getfattr(xdr, res->fattr, res->server);
6261out:
6262 return status;
6263}
6264
6265/*
6266 * Decode LOOKUP_ROOT response
6267 */
6268static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6269 struct xdr_stream *xdr,
6270 void *data)
6271{
6272 struct nfs4_lookup_res *res = data;
6273 struct compound_hdr hdr;
6274 int status;
6275
6276 status = decode_compound_hdr(xdr, &hdr);
6277 if (status)
6278 goto out;
6279 status = decode_sequence(xdr, &res->seq_res, rqstp);
6280 if (status)
6281 goto out;
6282 status = decode_putrootfh(xdr);
6283 if (status)
6284 goto out;
6285 status = decode_getfh(xdr, res->fh);
6286 if (status == 0)
6287 status = decode_getfattr(xdr, res->fattr, res->server);
6288out:
6289 return status;
6290}
6291
6292/*
6293 * Decode REMOVE response
6294 */
6295static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6296 void *data)
6297{
6298 struct nfs_removeres *res = data;
6299 struct compound_hdr hdr;
6300 int status;
6301
6302 status = decode_compound_hdr(xdr, &hdr);
6303 if (status)
6304 goto out;
6305 status = decode_sequence(xdr, &res->seq_res, rqstp);
6306 if (status)
6307 goto out;
6308 status = decode_putfh(xdr);
6309 if (status)
6310 goto out;
6311 status = decode_remove(xdr, &res->cinfo);
6312out:
6313 return status;
6314}
6315
6316/*
6317 * Decode RENAME response
6318 */
6319static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6320 void *data)
6321{
6322 struct nfs_renameres *res = data;
6323 struct compound_hdr hdr;
6324 int status;
6325
6326 status = decode_compound_hdr(xdr, &hdr);
6327 if (status)
6328 goto out;
6329 status = decode_sequence(xdr, &res->seq_res, rqstp);
6330 if (status)
6331 goto out;
6332 status = decode_putfh(xdr);
6333 if (status)
6334 goto out;
6335 status = decode_savefh(xdr);
6336 if (status)
6337 goto out;
6338 status = decode_putfh(xdr);
6339 if (status)
6340 goto out;
6341 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6342out:
6343 return status;
6344}
6345
6346/*
6347 * Decode LINK response
6348 */
6349static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6350 void *data)
6351{
6352 struct nfs4_link_res *res = data;
6353 struct compound_hdr hdr;
6354 int status;
6355
6356 status = decode_compound_hdr(xdr, &hdr);
6357 if (status)
6358 goto out;
6359 status = decode_sequence(xdr, &res->seq_res, rqstp);
6360 if (status)
6361 goto out;
6362 status = decode_putfh(xdr);
6363 if (status)
6364 goto out;
6365 status = decode_savefh(xdr);
6366 if (status)
6367 goto out;
6368 status = decode_putfh(xdr);
6369 if (status)
6370 goto out;
6371 status = decode_link(xdr, &res->cinfo);
6372 if (status)
6373 goto out;
6374 /*
6375 * Note order: OP_LINK leaves the directory as the current
6376 * filehandle.
6377 */
6378 status = decode_restorefh(xdr);
6379 if (status)
6380 goto out;
6381 decode_getfattr(xdr, res->fattr, res->server);
6382out:
6383 return status;
6384}
6385
6386/*
6387 * Decode CREATE response
6388 */
6389static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6390 void *data)
6391{
6392 struct nfs4_create_res *res = data;
6393 struct compound_hdr hdr;
6394 int status;
6395
6396 status = decode_compound_hdr(xdr, &hdr);
6397 if (status)
6398 goto out;
6399 status = decode_sequence(xdr, &res->seq_res, rqstp);
6400 if (status)
6401 goto out;
6402 status = decode_putfh(xdr);
6403 if (status)
6404 goto out;
6405 status = decode_create(xdr, &res->dir_cinfo);
6406 if (status)
6407 goto out;
6408 status = decode_getfh(xdr, res->fh);
6409 if (status)
6410 goto out;
6411 decode_getfattr(xdr, res->fattr, res->server);
6412out:
6413 return status;
6414}
6415
6416/*
6417 * Decode SYMLINK response
6418 */
6419static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6420 void *res)
6421{
6422 return nfs4_xdr_dec_create(rqstp, xdr, res);
6423}
6424
6425/*
6426 * Decode GETATTR response
6427 */
6428static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6429 void *data)
6430{
6431 struct nfs4_getattr_res *res = data;
6432 struct compound_hdr hdr;
6433 int status;
6434
6435 status = decode_compound_hdr(xdr, &hdr);
6436 if (status)
6437 goto out;
6438 status = decode_sequence(xdr, &res->seq_res, rqstp);
6439 if (status)
6440 goto out;
6441 status = decode_putfh(xdr);
6442 if (status)
6443 goto out;
6444 status = decode_getfattr(xdr, res->fattr, res->server);
6445out:
6446 return status;
6447}
6448
6449/*
6450 * Encode an SETACL request
6451 */
6452static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6453 const void *data)
6454{
6455 const struct nfs_setaclargs *args = data;
6456 struct compound_hdr hdr = {
6457 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6458 };
6459
6460 encode_compound_hdr(xdr, req, &hdr);
6461 encode_sequence(xdr, &args->seq_args, &hdr);
6462 encode_putfh(xdr, args->fh, &hdr);
6463 encode_setacl(xdr, args, &hdr);
6464 encode_nops(&hdr);
6465}
6466
6467/*
6468 * Decode SETACL response
6469 */
6470static int
6471nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6472 void *data)
6473{
6474 struct nfs_setaclres *res = data;
6475 struct compound_hdr hdr;
6476 int status;
6477
6478 status = decode_compound_hdr(xdr, &hdr);
6479 if (status)
6480 goto out;
6481 status = decode_sequence(xdr, &res->seq_res, rqstp);
6482 if (status)
6483 goto out;
6484 status = decode_putfh(xdr);
6485 if (status)
6486 goto out;
6487 status = decode_setattr(xdr);
6488out:
6489 return status;
6490}
6491
6492/*
6493 * Decode GETACL response
6494 */
6495static int
6496nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6497 void *data)
6498{
6499 struct nfs_getaclres *res = data;
6500 struct compound_hdr hdr;
6501 int status;
6502
6503 if (res->acl_scratch != NULL)
6504 xdr_set_scratch_page(xdr, res->acl_scratch);
6505 status = decode_compound_hdr(xdr, &hdr);
6506 if (status)
6507 goto out;
6508 status = decode_sequence(xdr, &res->seq_res, rqstp);
6509 if (status)
6510 goto out;
6511 status = decode_putfh(xdr);
6512 if (status)
6513 goto out;
6514 status = decode_getacl(xdr, rqstp, res, res->acl_type);
6515
6516out:
6517 return status;
6518}
6519
6520/*
6521 * Decode CLOSE response
6522 */
6523static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6524 void *data)
6525{
6526 struct nfs_closeres *res = data;
6527 struct compound_hdr hdr;
6528 int status;
6529
6530 status = decode_compound_hdr(xdr, &hdr);
6531 if (status)
6532 goto out;
6533 status = decode_sequence(xdr, &res->seq_res, rqstp);
6534 if (status)
6535 goto out;
6536 status = decode_putfh(xdr);
6537 if (status)
6538 goto out;
6539 if (res->lr_res) {
6540 status = decode_layoutreturn(xdr, res->lr_res);
6541 res->lr_ret = status;
6542 if (status)
6543 goto out;
6544 }
6545 if (res->fattr != NULL) {
6546 status = decode_getfattr(xdr, res->fattr, res->server);
6547 if (status != 0)
6548 goto out;
6549 }
6550 status = decode_close(xdr, res);
6551out:
6552 return status;
6553}
6554
6555/*
6556 * Decode OPEN response
6557 */
6558static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6559 void *data)
6560{
6561 struct nfs_openres *res = data;
6562 struct compound_hdr hdr;
6563 int status;
6564
6565 status = decode_compound_hdr(xdr, &hdr);
6566 if (status)
6567 goto out;
6568 status = decode_sequence(xdr, &res->seq_res, rqstp);
6569 if (status)
6570 goto out;
6571 status = decode_putfh(xdr);
6572 if (status)
6573 goto out;
6574 status = decode_open(xdr, res);
6575 if (status)
6576 goto out;
6577 status = decode_getfh(xdr, &res->fh);
6578 if (status)
6579 goto out;
6580 if (res->access_request)
6581 decode_access(xdr, &res->access_supported, &res->access_result);
6582 decode_getfattr(xdr, res->f_attr, res->server);
6583 if (res->lg_res)
6584 decode_layoutget(xdr, rqstp, res->lg_res);
6585out:
6586 return status;
6587}
6588
6589/*
6590 * Decode OPEN_CONFIRM response
6591 */
6592static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6593 struct xdr_stream *xdr,
6594 void *data)
6595{
6596 struct nfs_open_confirmres *res = data;
6597 struct compound_hdr hdr;
6598 int status;
6599
6600 status = decode_compound_hdr(xdr, &hdr);
6601 if (status)
6602 goto out;
6603 status = decode_putfh(xdr);
6604 if (status)
6605 goto out;
6606 status = decode_open_confirm(xdr, res);
6607out:
6608 return status;
6609}
6610
6611/*
6612 * Decode OPEN response
6613 */
6614static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6615 struct xdr_stream *xdr,
6616 void *data)
6617{
6618 struct nfs_openres *res = data;
6619 struct compound_hdr hdr;
6620 int status;
6621
6622 status = decode_compound_hdr(xdr, &hdr);
6623 if (status)
6624 goto out;
6625 status = decode_sequence(xdr, &res->seq_res, rqstp);
6626 if (status)
6627 goto out;
6628 status = decode_putfh(xdr);
6629 if (status)
6630 goto out;
6631 status = decode_open(xdr, res);
6632 if (status)
6633 goto out;
6634 if (res->access_request)
6635 decode_access(xdr, &res->access_supported, &res->access_result);
6636 decode_getfattr(xdr, res->f_attr, res->server);
6637 if (res->lg_res)
6638 decode_layoutget(xdr, rqstp, res->lg_res);
6639out:
6640 return status;
6641}
6642
6643/*
6644 * Decode SETATTR response
6645 */
6646static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6647 struct xdr_stream *xdr,
6648 void *data)
6649{
6650 struct nfs_setattrres *res = data;
6651 struct compound_hdr hdr;
6652 int status;
6653
6654 status = decode_compound_hdr(xdr, &hdr);
6655 if (status)
6656 goto out;
6657 status = decode_sequence(xdr, &res->seq_res, rqstp);
6658 if (status)
6659 goto out;
6660 status = decode_putfh(xdr);
6661 if (status)
6662 goto out;
6663 status = decode_setattr(xdr);
6664 if (status)
6665 goto out;
6666 decode_getfattr(xdr, res->fattr, res->server);
6667out:
6668 return status;
6669}
6670
6671/*
6672 * Decode LOCK response
6673 */
6674static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6675 void *data)
6676{
6677 struct nfs_lock_res *res = data;
6678 struct compound_hdr hdr;
6679 int status;
6680
6681 status = decode_compound_hdr(xdr, &hdr);
6682 if (status)
6683 goto out;
6684 status = decode_sequence(xdr, &res->seq_res, rqstp);
6685 if (status)
6686 goto out;
6687 status = decode_putfh(xdr);
6688 if (status)
6689 goto out;
6690 status = decode_lock(xdr, res);
6691out:
6692 return status;
6693}
6694
6695/*
6696 * Decode LOCKT response
6697 */
6698static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6699 void *data)
6700{
6701 struct nfs_lockt_res *res = data;
6702 struct compound_hdr hdr;
6703 int status;
6704
6705 status = decode_compound_hdr(xdr, &hdr);
6706 if (status)
6707 goto out;
6708 status = decode_sequence(xdr, &res->seq_res, rqstp);
6709 if (status)
6710 goto out;
6711 status = decode_putfh(xdr);
6712 if (status)
6713 goto out;
6714 status = decode_lockt(xdr, res);
6715out:
6716 return status;
6717}
6718
6719/*
6720 * Decode LOCKU response
6721 */
6722static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6723 void *data)
6724{
6725 struct nfs_locku_res *res = data;
6726 struct compound_hdr hdr;
6727 int status;
6728
6729 status = decode_compound_hdr(xdr, &hdr);
6730 if (status)
6731 goto out;
6732 status = decode_sequence(xdr, &res->seq_res, rqstp);
6733 if (status)
6734 goto out;
6735 status = decode_putfh(xdr);
6736 if (status)
6737 goto out;
6738 status = decode_locku(xdr, res);
6739out:
6740 return status;
6741}
6742
6743static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6744 struct xdr_stream *xdr, void *dummy)
6745{
6746 struct compound_hdr hdr;
6747 int status;
6748
6749 status = decode_compound_hdr(xdr, &hdr);
6750 if (!status)
6751 status = decode_release_lockowner(xdr);
6752 return status;
6753}
6754
6755/*
6756 * Decode READLINK response
6757 */
6758static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6759 struct xdr_stream *xdr,
6760 void *data)
6761{
6762 struct nfs4_readlink_res *res = data;
6763 struct compound_hdr hdr;
6764 int status;
6765
6766 status = decode_compound_hdr(xdr, &hdr);
6767 if (status)
6768 goto out;
6769 status = decode_sequence(xdr, &res->seq_res, rqstp);
6770 if (status)
6771 goto out;
6772 status = decode_putfh(xdr);
6773 if (status)
6774 goto out;
6775 status = decode_readlink(xdr, rqstp);
6776out:
6777 return status;
6778}
6779
6780/*
6781 * Decode READDIR response
6782 */
6783static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6784 void *data)
6785{
6786 struct nfs4_readdir_res *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_sequence(xdr, &res->seq_res, rqstp);
6794 if (status)
6795 goto out;
6796 status = decode_putfh(xdr);
6797 if (status)
6798 goto out;
6799 status = decode_readdir(xdr, rqstp, res);
6800out:
6801 return status;
6802}
6803
6804/*
6805 * Decode Read response
6806 */
6807static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6808 void *data)
6809{
6810 struct nfs_pgio_res *res = data;
6811 struct compound_hdr hdr;
6812 int status;
6813
6814 status = decode_compound_hdr(xdr, &hdr);
6815 res->op_status = hdr.status;
6816 if (status)
6817 goto out;
6818 status = decode_sequence(xdr, &res->seq_res, rqstp);
6819 if (status)
6820 goto out;
6821 status = decode_putfh(xdr);
6822 if (status)
6823 goto out;
6824 status = decode_read(xdr, rqstp, res);
6825 if (!status)
6826 status = res->count;
6827out:
6828 return status;
6829}
6830
6831/*
6832 * Decode WRITE response
6833 */
6834static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6835 void *data)
6836{
6837 struct nfs_pgio_res *res = data;
6838 struct compound_hdr hdr;
6839 int status;
6840
6841 status = decode_compound_hdr(xdr, &hdr);
6842 res->op_status = hdr.status;
6843 if (status)
6844 goto out;
6845 status = decode_sequence(xdr, &res->seq_res, rqstp);
6846 if (status)
6847 goto out;
6848 status = decode_putfh(xdr);
6849 if (status)
6850 goto out;
6851 status = decode_write(xdr, res);
6852 if (status)
6853 goto out;
6854 if (res->fattr)
6855 decode_getfattr(xdr, res->fattr, res->server);
6856 if (!status)
6857 status = res->count;
6858out:
6859 return status;
6860}
6861
6862/*
6863 * Decode COMMIT response
6864 */
6865static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6866 void *data)
6867{
6868 struct nfs_commitres *res = data;
6869 struct compound_hdr hdr;
6870 int status;
6871
6872 status = decode_compound_hdr(xdr, &hdr);
6873 res->op_status = hdr.status;
6874 if (status)
6875 goto out;
6876 status = decode_sequence(xdr, &res->seq_res, rqstp);
6877 if (status)
6878 goto out;
6879 status = decode_putfh(xdr);
6880 if (status)
6881 goto out;
6882 status = decode_commit(xdr, res);
6883out:
6884 return status;
6885}
6886
6887/*
6888 * Decode FSINFO response
6889 */
6890static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6891 void *data)
6892{
6893 struct nfs4_fsinfo_res *res = data;
6894 struct compound_hdr hdr;
6895 int status;
6896
6897 status = decode_compound_hdr(xdr, &hdr);
6898 if (!status)
6899 status = decode_sequence(xdr, &res->seq_res, req);
6900 if (!status)
6901 status = decode_putfh(xdr);
6902 if (!status)
6903 status = decode_fsinfo(xdr, res->fsinfo);
6904 return status;
6905}
6906
6907/*
6908 * Decode PATHCONF response
6909 */
6910static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6911 void *data)
6912{
6913 struct nfs4_pathconf_res *res = data;
6914 struct compound_hdr hdr;
6915 int status;
6916
6917 status = decode_compound_hdr(xdr, &hdr);
6918 if (!status)
6919 status = decode_sequence(xdr, &res->seq_res, req);
6920 if (!status)
6921 status = decode_putfh(xdr);
6922 if (!status)
6923 status = decode_pathconf(xdr, res->pathconf);
6924 return status;
6925}
6926
6927/*
6928 * Decode STATFS response
6929 */
6930static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6931 void *data)
6932{
6933 struct nfs4_statfs_res *res = data;
6934 struct compound_hdr hdr;
6935 int status;
6936
6937 status = decode_compound_hdr(xdr, &hdr);
6938 if (!status)
6939 status = decode_sequence(xdr, &res->seq_res, req);
6940 if (!status)
6941 status = decode_putfh(xdr);
6942 if (!status)
6943 status = decode_statfs(xdr, res->fsstat);
6944 return status;
6945}
6946
6947/*
6948 * Decode GETATTR_BITMAP response
6949 */
6950static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6951 struct xdr_stream *xdr,
6952 void *data)
6953{
6954 struct nfs4_server_caps_res *res = data;
6955 struct compound_hdr hdr;
6956 int status;
6957
6958 status = decode_compound_hdr(xdr, &hdr);
6959 if (status)
6960 goto out;
6961 status = decode_sequence(xdr, &res->seq_res, req);
6962 if (status)
6963 goto out;
6964 status = decode_putfh(xdr);
6965 if (status)
6966 goto out;
6967 status = decode_server_caps(xdr, res);
6968out:
6969 return status;
6970}
6971
6972/*
6973 * Decode RENEW response
6974 */
6975static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6976 void *__unused)
6977{
6978 struct compound_hdr hdr;
6979 int status;
6980
6981 status = decode_compound_hdr(xdr, &hdr);
6982 if (!status)
6983 status = decode_renew(xdr);
6984 return status;
6985}
6986
6987/*
6988 * Decode SETCLIENTID response
6989 */
6990static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6991 struct xdr_stream *xdr,
6992 void *data)
6993{
6994 struct nfs4_setclientid_res *res = data;
6995 struct compound_hdr hdr;
6996 int status;
6997
6998 status = decode_compound_hdr(xdr, &hdr);
6999 if (!status)
7000 status = decode_setclientid(xdr, res);
7001 return status;
7002}
7003
7004/*
7005 * Decode SETCLIENTID_CONFIRM response
7006 */
7007static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
7008 struct xdr_stream *xdr,
7009 void *data)
7010{
7011 struct compound_hdr hdr;
7012 int status;
7013
7014 status = decode_compound_hdr(xdr, &hdr);
7015 if (!status)
7016 status = decode_setclientid_confirm(xdr);
7017 return status;
7018}
7019
7020/*
7021 * Decode DELEGRETURN response
7022 */
7023static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
7024 struct xdr_stream *xdr,
7025 void *data)
7026{
7027 struct nfs4_delegreturnres *res = data;
7028 struct compound_hdr hdr;
7029 int status;
7030
7031 status = decode_compound_hdr(xdr, &hdr);
7032 if (status)
7033 goto out;
7034 status = decode_sequence(xdr, &res->seq_res, rqstp);
7035 if (status)
7036 goto out;
7037 status = decode_putfh(xdr);
7038 if (status != 0)
7039 goto out;
7040 if (res->lr_res) {
7041 status = decode_layoutreturn(xdr, res->lr_res);
7042 res->lr_ret = status;
7043 if (status)
7044 goto out;
7045 }
7046 if (res->fattr) {
7047 status = decode_getfattr(xdr, res->fattr, res->server);
7048 if (status != 0)
7049 goto out;
7050 }
7051 status = decode_delegreturn(xdr);
7052out:
7053 return status;
7054}
7055
7056/*
7057 * Decode FS_LOCATIONS response
7058 */
7059static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7060 struct xdr_stream *xdr,
7061 void *data)
7062{
7063 struct nfs4_fs_locations_res *res = data;
7064 struct compound_hdr hdr;
7065 int status;
7066
7067 status = decode_compound_hdr(xdr, &hdr);
7068 if (status)
7069 goto out;
7070 status = decode_sequence(xdr, &res->seq_res, req);
7071 if (status)
7072 goto out;
7073 status = decode_putfh(xdr);
7074 if (status)
7075 goto out;
7076 if (res->migration) {
7077 xdr_enter_page(xdr, PAGE_SIZE);
7078 status = decode_getfattr_generic(xdr,
7079 res->fs_locations->fattr,
7080 NULL, res->fs_locations,
7081 res->fs_locations->server);
7082 if (status)
7083 goto out;
7084 if (res->renew)
7085 status = decode_renew(xdr);
7086 } else {
7087 status = decode_lookup(xdr);
7088 if (status)
7089 goto out;
7090 xdr_enter_page(xdr, PAGE_SIZE);
7091 status = decode_getfattr_generic(xdr,
7092 res->fs_locations->fattr,
7093 NULL, res->fs_locations,
7094 res->fs_locations->server);
7095 }
7096out:
7097 return status;
7098}
7099
7100/*
7101 * Decode SECINFO response
7102 */
7103static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7104 struct xdr_stream *xdr,
7105 void *data)
7106{
7107 struct nfs4_secinfo_res *res = data;
7108 struct compound_hdr hdr;
7109 int status;
7110
7111 status = decode_compound_hdr(xdr, &hdr);
7112 if (status)
7113 goto out;
7114 status = decode_sequence(xdr, &res->seq_res, rqstp);
7115 if (status)
7116 goto out;
7117 status = decode_putfh(xdr);
7118 if (status)
7119 goto out;
7120 status = decode_secinfo(xdr, res);
7121out:
7122 return status;
7123}
7124
7125/*
7126 * Decode FSID_PRESENT response
7127 */
7128static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7129 struct xdr_stream *xdr,
7130 void *data)
7131{
7132 struct nfs4_fsid_present_res *res = data;
7133 struct compound_hdr hdr;
7134 int status;
7135
7136 status = decode_compound_hdr(xdr, &hdr);
7137 if (status)
7138 goto out;
7139 status = decode_sequence(xdr, &res->seq_res, rqstp);
7140 if (status)
7141 goto out;
7142 status = decode_putfh(xdr);
7143 if (status)
7144 goto out;
7145 status = decode_getfh(xdr, res->fh);
7146 if (status)
7147 goto out;
7148 if (res->renew)
7149 status = decode_renew(xdr);
7150out:
7151 return status;
7152}
7153
7154#if defined(CONFIG_NFS_V4_1)
7155/*
7156 * Decode BIND_CONN_TO_SESSION response
7157 */
7158static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7159 struct xdr_stream *xdr,
7160 void *res)
7161{
7162 struct compound_hdr hdr;
7163 int status;
7164
7165 status = decode_compound_hdr(xdr, &hdr);
7166 if (!status)
7167 status = decode_bind_conn_to_session(xdr, res);
7168 return status;
7169}
7170
7171/*
7172 * Decode EXCHANGE_ID response
7173 */
7174static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7175 struct xdr_stream *xdr,
7176 void *res)
7177{
7178 struct compound_hdr hdr;
7179 int status;
7180
7181 status = decode_compound_hdr(xdr, &hdr);
7182 if (!status)
7183 status = decode_exchange_id(xdr, res);
7184 return status;
7185}
7186
7187/*
7188 * Decode CREATE_SESSION response
7189 */
7190static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7191 struct xdr_stream *xdr,
7192 void *res)
7193{
7194 struct compound_hdr hdr;
7195 int status;
7196
7197 status = decode_compound_hdr(xdr, &hdr);
7198 if (!status)
7199 status = decode_create_session(xdr, res);
7200 return status;
7201}
7202
7203/*
7204 * Decode DESTROY_SESSION response
7205 */
7206static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7207 struct xdr_stream *xdr,
7208 void *res)
7209{
7210 struct compound_hdr hdr;
7211 int status;
7212
7213 status = decode_compound_hdr(xdr, &hdr);
7214 if (!status)
7215 status = decode_destroy_session(xdr, res);
7216 return status;
7217}
7218
7219/*
7220 * Decode DESTROY_CLIENTID response
7221 */
7222static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7223 struct xdr_stream *xdr,
7224 void *res)
7225{
7226 struct compound_hdr hdr;
7227 int status;
7228
7229 status = decode_compound_hdr(xdr, &hdr);
7230 if (!status)
7231 status = decode_destroy_clientid(xdr, res);
7232 return status;
7233}
7234
7235/*
7236 * Decode SEQUENCE response
7237 */
7238static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7239 struct xdr_stream *xdr,
7240 void *res)
7241{
7242 struct compound_hdr hdr;
7243 int status;
7244
7245 status = decode_compound_hdr(xdr, &hdr);
7246 if (!status)
7247 status = decode_sequence(xdr, res, rqstp);
7248 return status;
7249}
7250
7251#endif
7252
7253/*
7254 * Decode GET_LEASE_TIME response
7255 */
7256static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7257 struct xdr_stream *xdr,
7258 void *data)
7259{
7260 struct nfs4_get_lease_time_res *res = data;
7261 struct compound_hdr hdr;
7262 int status;
7263
7264 status = decode_compound_hdr(xdr, &hdr);
7265 if (!status)
7266 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7267 if (!status)
7268 status = decode_putrootfh(xdr);
7269 if (!status)
7270 status = decode_fsinfo(xdr, res->lr_fsinfo);
7271 return status;
7272}
7273
7274#ifdef CONFIG_NFS_V4_1
7275
7276/*
7277 * Decode RECLAIM_COMPLETE response
7278 */
7279static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7280 struct xdr_stream *xdr,
7281 void *data)
7282{
7283 struct nfs41_reclaim_complete_res *res = data;
7284 struct compound_hdr hdr;
7285 int status;
7286
7287 status = decode_compound_hdr(xdr, &hdr);
7288 if (!status)
7289 status = decode_sequence(xdr, &res->seq_res, rqstp);
7290 if (!status)
7291 status = decode_reclaim_complete(xdr, NULL);
7292 return status;
7293}
7294
7295/*
7296 * Decode GETDEVINFO response
7297 */
7298static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7299 struct xdr_stream *xdr,
7300 void *data)
7301{
7302 struct nfs4_getdeviceinfo_res *res = data;
7303 struct compound_hdr hdr;
7304 int status;
7305
7306 status = decode_compound_hdr(xdr, &hdr);
7307 if (status != 0)
7308 goto out;
7309 status = decode_sequence(xdr, &res->seq_res, rqstp);
7310 if (status != 0)
7311 goto out;
7312 status = decode_getdeviceinfo(xdr, res);
7313out:
7314 return status;
7315}
7316
7317/*
7318 * Decode LAYOUTGET response
7319 */
7320static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7321 struct xdr_stream *xdr,
7322 void *data)
7323{
7324 struct nfs4_layoutget_res *res = data;
7325 struct compound_hdr hdr;
7326 int status;
7327
7328 status = decode_compound_hdr(xdr, &hdr);
7329 if (status)
7330 goto out;
7331 status = decode_sequence(xdr, &res->seq_res, rqstp);
7332 if (status)
7333 goto out;
7334 status = decode_putfh(xdr);
7335 if (status)
7336 goto out;
7337 status = decode_layoutget(xdr, rqstp, res);
7338out:
7339 return status;
7340}
7341
7342/*
7343 * Decode LAYOUTRETURN response
7344 */
7345static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7346 struct xdr_stream *xdr,
7347 void *data)
7348{
7349 struct nfs4_layoutreturn_res *res = data;
7350 struct compound_hdr hdr;
7351 int status;
7352
7353 status = decode_compound_hdr(xdr, &hdr);
7354 if (status)
7355 goto out;
7356 status = decode_sequence(xdr, &res->seq_res, rqstp);
7357 if (status)
7358 goto out;
7359 status = decode_putfh(xdr);
7360 if (status)
7361 goto out;
7362 status = decode_layoutreturn(xdr, res);
7363out:
7364 return status;
7365}
7366
7367/*
7368 * Decode LAYOUTCOMMIT response
7369 */
7370static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7371 struct xdr_stream *xdr,
7372 void *data)
7373{
7374 struct nfs4_layoutcommit_res *res = data;
7375 struct compound_hdr hdr;
7376 int status;
7377
7378 status = decode_compound_hdr(xdr, &hdr);
7379 if (status)
7380 goto out;
7381 status = decode_sequence(xdr, &res->seq_res, rqstp);
7382 if (status)
7383 goto out;
7384 status = decode_putfh(xdr);
7385 if (status)
7386 goto out;
7387 status = decode_layoutcommit(xdr, rqstp, res);
7388 if (status)
7389 goto out;
7390 decode_getfattr(xdr, res->fattr, res->server);
7391out:
7392 return status;
7393}
7394
7395/*
7396 * Decode SECINFO_NO_NAME response
7397 */
7398static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7399 struct xdr_stream *xdr,
7400 void *data)
7401{
7402 struct nfs4_secinfo_res *res = data;
7403 struct compound_hdr hdr;
7404 int status;
7405
7406 status = decode_compound_hdr(xdr, &hdr);
7407 if (status)
7408 goto out;
7409 status = decode_sequence(xdr, &res->seq_res, rqstp);
7410 if (status)
7411 goto out;
7412 status = decode_putrootfh(xdr);
7413 if (status)
7414 goto out;
7415 status = decode_secinfo_no_name(xdr, res);
7416out:
7417 return status;
7418}
7419
7420/*
7421 * Decode TEST_STATEID response
7422 */
7423static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7424 struct xdr_stream *xdr,
7425 void *data)
7426{
7427 struct nfs41_test_stateid_res *res = data;
7428 struct compound_hdr hdr;
7429 int status;
7430
7431 status = decode_compound_hdr(xdr, &hdr);
7432 if (status)
7433 goto out;
7434 status = decode_sequence(xdr, &res->seq_res, rqstp);
7435 if (status)
7436 goto out;
7437 status = decode_test_stateid(xdr, res);
7438out:
7439 return status;
7440}
7441
7442/*
7443 * Decode FREE_STATEID response
7444 */
7445static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7446 struct xdr_stream *xdr,
7447 void *data)
7448{
7449 struct nfs41_free_stateid_res *res = data;
7450 struct compound_hdr hdr;
7451 int status;
7452
7453 status = decode_compound_hdr(xdr, &hdr);
7454 if (status)
7455 goto out;
7456 status = decode_sequence(xdr, &res->seq_res, rqstp);
7457 if (status)
7458 goto out;
7459 status = decode_free_stateid(xdr, res);
7460out:
7461 return status;
7462}
7463#endif /* CONFIG_NFS_V4_1 */
7464
7465/**
7466 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7467 * the local page cache.
7468 * @xdr: XDR stream where entry resides
7469 * @entry: buffer to fill in with entry data
7470 * @plus: boolean indicating whether this should be a readdirplus entry
7471 *
7472 * Returns zero if successful, otherwise a negative errno value is
7473 * returned.
7474 *
7475 * This function is not invoked during READDIR reply decoding, but
7476 * rather whenever an application invokes the getdents(2) system call
7477 * on a directory already in our cache.
7478 */
7479int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7480 bool plus)
7481{
7482 unsigned int savep;
7483 uint32_t bitmap[3] = {0};
7484 uint32_t len;
7485 uint64_t new_cookie;
7486 __be32 *p = xdr_inline_decode(xdr, 4);
7487 if (unlikely(!p))
7488 return -EAGAIN;
7489 if (*p == xdr_zero) {
7490 p = xdr_inline_decode(xdr, 4);
7491 if (unlikely(!p))
7492 return -EAGAIN;
7493 if (*p == xdr_zero)
7494 return -EAGAIN;
7495 entry->eof = 1;
7496 return -EBADCOOKIE;
7497 }
7498
7499 p = xdr_inline_decode(xdr, 12);
7500 if (unlikely(!p))
7501 return -EAGAIN;
7502 p = xdr_decode_hyper(p, &new_cookie);
7503 entry->len = be32_to_cpup(p);
7504
7505 p = xdr_inline_decode(xdr, entry->len);
7506 if (unlikely(!p))
7507 return -EAGAIN;
7508 entry->name = (const char *) p;
7509
7510 /*
7511 * In case the server doesn't return an inode number,
7512 * we fake one here. (We don't use inode number 0,
7513 * since glibc seems to choke on it...)
7514 */
7515 entry->ino = 1;
7516 entry->fattr->valid = 0;
7517
7518 if (decode_attr_bitmap(xdr, bitmap) < 0)
7519 return -EAGAIN;
7520
7521 if (decode_attr_length(xdr, &len, &savep) < 0)
7522 return -EAGAIN;
7523
7524 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7525 NULL, entry->server) < 0)
7526 return -EAGAIN;
7527 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7528 entry->ino = entry->fattr->mounted_on_fileid;
7529 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7530 entry->ino = entry->fattr->fileid;
7531
7532 entry->d_type = DT_UNKNOWN;
7533 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7534 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7535
7536 entry->cookie = new_cookie;
7537
7538 return 0;
7539}
7540
7541/*
7542 * We need to translate between nfs status return values and
7543 * the local errno values which may not be the same.
7544 */
7545static struct {
7546 int stat;
7547 int errno;
7548} nfs_errtbl[] = {
7549 { NFS4_OK, 0 },
7550 { NFS4ERR_PERM, -EPERM },
7551 { NFS4ERR_NOENT, -ENOENT },
7552 { NFS4ERR_IO, -errno_NFSERR_IO},
7553 { NFS4ERR_NXIO, -ENXIO },
7554 { NFS4ERR_ACCESS, -EACCES },
7555 { NFS4ERR_EXIST, -EEXIST },
7556 { NFS4ERR_XDEV, -EXDEV },
7557 { NFS4ERR_NOTDIR, -ENOTDIR },
7558 { NFS4ERR_ISDIR, -EISDIR },
7559 { NFS4ERR_INVAL, -EINVAL },
7560 { NFS4ERR_FBIG, -EFBIG },
7561 { NFS4ERR_NOSPC, -ENOSPC },
7562 { NFS4ERR_ROFS, -EROFS },
7563 { NFS4ERR_MLINK, -EMLINK },
7564 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7565 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7566 { NFS4ERR_DQUOT, -EDQUOT },
7567 { NFS4ERR_STALE, -ESTALE },
7568 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7569 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7570 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7571 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7572 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7573 { NFS4ERR_BADTYPE, -EBADTYPE },
7574 { NFS4ERR_LOCKED, -EAGAIN },
7575 { NFS4ERR_SYMLINK, -ELOOP },
7576 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7577 { NFS4ERR_DEADLOCK, -EDEADLK },
7578 { NFS4ERR_NOXATTR, -ENODATA },
7579 { NFS4ERR_XATTR2BIG, -E2BIG },
7580 { -1, -EIO }
7581};
7582
7583/*
7584 * Convert an NFS error code to a local one.
7585 * This one is used jointly by NFSv2 and NFSv3.
7586 */
7587static int
7588nfs4_stat_to_errno(int stat)
7589{
7590 int i;
7591 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7592 if (nfs_errtbl[i].stat == stat)
7593 return nfs_errtbl[i].errno;
7594 }
7595 if (stat <= 10000 || stat > 10100) {
7596 /* The server is looney tunes. */
7597 return -EREMOTEIO;
7598 }
7599 /* If we cannot translate the error, the recovery routines should
7600 * handle it.
7601 * Note: remaining NFSv4 error codes have values > 10000, so should
7602 * not conflict with native Linux error codes.
7603 */
7604 return -stat;
7605}
7606
7607#ifdef CONFIG_NFS_V4_2
7608#include "nfs42xdr.c"
7609#endif /* CONFIG_NFS_V4_2 */
7610
7611#define PROC(proc, argtype, restype) \
7612[NFSPROC4_CLNT_##proc] = { \
7613 .p_proc = NFSPROC4_COMPOUND, \
7614 .p_encode = nfs4_xdr_##argtype, \
7615 .p_decode = nfs4_xdr_##restype, \
7616 .p_arglen = NFS4_##argtype##_sz, \
7617 .p_replen = NFS4_##restype##_sz, \
7618 .p_statidx = NFSPROC4_CLNT_##proc, \
7619 .p_name = #proc, \
7620}
7621
7622#define STUB(proc) \
7623[NFSPROC4_CLNT_##proc] = { \
7624 .p_name = #proc, \
7625}
7626
7627#if defined(CONFIG_NFS_V4_1)
7628#define PROC41(proc, argtype, restype) \
7629 PROC(proc, argtype, restype)
7630#else
7631#define PROC41(proc, argtype, restype) \
7632 STUB(proc)
7633#endif
7634
7635#if defined(CONFIG_NFS_V4_2)
7636#define PROC42(proc, argtype, restype) \
7637 PROC(proc, argtype, restype)
7638#else
7639#define PROC42(proc, argtype, restype) \
7640 STUB(proc)
7641#endif
7642
7643const struct rpc_procinfo nfs4_procedures[] = {
7644 PROC(READ, enc_read, dec_read),
7645 PROC(WRITE, enc_write, dec_write),
7646 PROC(COMMIT, enc_commit, dec_commit),
7647 PROC(OPEN, enc_open, dec_open),
7648 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7649 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7650 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7651 PROC(CLOSE, enc_close, dec_close),
7652 PROC(SETATTR, enc_setattr, dec_setattr),
7653 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7654 PROC(RENEW, enc_renew, dec_renew),
7655 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7656 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7657 PROC(LOCK, enc_lock, dec_lock),
7658 PROC(LOCKT, enc_lockt, dec_lockt),
7659 PROC(LOCKU, enc_locku, dec_locku),
7660 PROC(ACCESS, enc_access, dec_access),
7661 PROC(GETATTR, enc_getattr, dec_getattr),
7662 PROC(LOOKUP, enc_lookup, dec_lookup),
7663 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7664 PROC(REMOVE, enc_remove, dec_remove),
7665 PROC(RENAME, enc_rename, dec_rename),
7666 PROC(LINK, enc_link, dec_link),
7667 PROC(SYMLINK, enc_symlink, dec_symlink),
7668 PROC(CREATE, enc_create, dec_create),
7669 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7670 PROC(STATFS, enc_statfs, dec_statfs),
7671 PROC(READLINK, enc_readlink, dec_readlink),
7672 PROC(READDIR, enc_readdir, dec_readdir),
7673 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7674 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7675 PROC(GETACL, enc_getacl, dec_getacl),
7676 PROC(SETACL, enc_setacl, dec_setacl),
7677 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7678 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7679 PROC(SECINFO, enc_secinfo, dec_secinfo),
7680 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7681 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7682 PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
7683 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7684 PROC41(SEQUENCE, enc_sequence, dec_sequence),
7685 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7686 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
7687 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7688 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),
7689 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7690 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7691 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7692 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7693 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7694 STUB(GETDEVICELIST),
7695 PROC41(BIND_CONN_TO_SESSION,
7696 enc_bind_conn_to_session, dec_bind_conn_to_session),
7697 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid),
7698 PROC42(SEEK, enc_seek, dec_seek),
7699 PROC42(ALLOCATE, enc_allocate, dec_allocate),
7700 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate),
7701 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7702 PROC42(CLONE, enc_clone, dec_clone),
7703 PROC42(COPY, enc_copy, dec_copy),
7704 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
7705 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify),
7706 PROC(LOOKUPP, enc_lookupp, dec_lookupp),
7707 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror),
7708 PROC42(GETXATTR, enc_getxattr, dec_getxattr),
7709 PROC42(SETXATTR, enc_setxattr, dec_setxattr),
7710 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs),
7711 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr),
7712 PROC42(READ_PLUS, enc_read_plus, dec_read_plus),
7713};
7714
7715static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7716const struct rpc_version nfs_version4 = {
7717 .number = 4,
7718 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7719 .procs = nfs4_procedures,
7720 .counts = nfs_version4_counts,
7721};
1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/module.h>
48#include <linux/utsname.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/sunrpc/msg_prot.h>
51#include <linux/sunrpc/gss_api.h>
52#include <linux/nfs.h>
53#include <linux/nfs4.h>
54#include <linux/nfs_fs.h>
55
56#include "nfs4_fs.h"
57#include "nfs4trace.h"
58#include "internal.h"
59#include "nfs4idmap.h"
60#include "nfs4session.h"
61#include "pnfs.h"
62#include "netns.h"
63
64#define NFSDBG_FACILITY NFSDBG_XDR
65
66/* Mapping from NFS error code to "errno" error code. */
67#define errno_NFSERR_IO EIO
68
69struct compound_hdr;
70static int nfs4_stat_to_errno(int);
71static void encode_layoutget(struct xdr_stream *xdr,
72 const struct nfs4_layoutget_args *args,
73 struct compound_hdr *hdr);
74static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
75 struct nfs4_layoutget_res *res);
76
77/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
78#ifdef DEBUG
79#define NFS4_MAXTAGLEN 20
80#else
81#define NFS4_MAXTAGLEN 0
82#endif
83
84/* lock,open owner id:
85 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
86 */
87#define pagepad_maxsz (1)
88#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
89#define lock_owner_id_maxsz (1 + 1 + 4)
90#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
91#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
92#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
93#define op_encode_hdr_maxsz (1)
94#define op_decode_hdr_maxsz (2)
95#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
96#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
97#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
98#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
99#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
100 (NFS4_FHSIZE >> 2))
101#define decode_putfh_maxsz (op_decode_hdr_maxsz)
102#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
103#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
104#define encode_getfh_maxsz (op_encode_hdr_maxsz)
105#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
106 ((3+NFS4_FHSIZE) >> 2))
107#define nfs4_fattr_bitmap_maxsz 4
108#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
109#define nfstime4_maxsz (3)
110#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
111#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
112#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
113#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
114#ifdef CONFIG_NFS_V4_SECURITY_LABEL
115/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
116#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
117#else
118#define nfs4_label_maxsz 0
119#endif
120/* We support only one layout type per file system */
121#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
122/* This is based on getfattr, which uses the most attributes: */
123#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
124 3*nfstime4_maxsz + \
125 nfs4_owner_maxsz + \
126 nfs4_group_maxsz + nfs4_label_maxsz + \
127 decode_mdsthreshold_maxsz))
128#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
129 nfs4_fattr_value_maxsz)
130#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
131#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
132 1 + 2 + 1 + \
133 nfs4_owner_maxsz + \
134 nfs4_group_maxsz + \
135 nfs4_label_maxsz + \
136 1 + nfstime4_maxsz + \
137 1 + nfstime4_maxsz)
138#define encode_savefh_maxsz (op_encode_hdr_maxsz)
139#define decode_savefh_maxsz (op_decode_hdr_maxsz)
140#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
141#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
142#define encode_fsinfo_maxsz (encode_getattr_maxsz)
143/* The 5 accounts for the PNFS attributes, and assumes that at most three
144 * layout types will be returned.
145 */
146#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
147 nfs4_fattr_bitmap_maxsz + 1 + \
148 1 /* lease time */ + \
149 2 /* max filesize */ + \
150 2 /* max read */ + \
151 2 /* max write */ + \
152 nfstime4_maxsz /* time delta */ + \
153 5 /* fs layout types */ + \
154 1 /* layout blksize */ + \
155 1 /* clone blksize */ + \
156 1 /* change attr type */ + \
157 1 /* xattr support */)
158#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
159#define decode_renew_maxsz (op_decode_hdr_maxsz)
160#define encode_setclientid_maxsz \
161 (op_encode_hdr_maxsz + \
162 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
163 /* client name */ \
164 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
165 1 /* sc_prog */ + \
166 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
167 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
168 1) /* sc_cb_ident */
169#define decode_setclientid_maxsz \
170 (op_decode_hdr_maxsz + \
171 2 /* clientid */ + \
172 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
173 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
174 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
175#define encode_setclientid_confirm_maxsz \
176 (op_encode_hdr_maxsz + \
177 3 + (NFS4_VERIFIER_SIZE >> 2))
178#define decode_setclientid_confirm_maxsz \
179 (op_decode_hdr_maxsz)
180#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
181#define decode_lookup_maxsz (op_decode_hdr_maxsz)
182#define encode_lookupp_maxsz (op_encode_hdr_maxsz)
183#define decode_lookupp_maxsz (op_decode_hdr_maxsz)
184#define encode_share_access_maxsz \
185 (2)
186#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
187#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
188#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
189#define encode_open_maxsz (op_encode_hdr_maxsz + \
190 2 + encode_share_access_maxsz + 2 + \
191 open_owner_id_maxsz + \
192 encode_opentype_maxsz + \
193 encode_claim_null_maxsz)
194#define decode_space_limit_maxsz (3)
195#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
196#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
197 decode_space_limit_maxsz + \
198 decode_ace_maxsz)
199#define decode_change_info_maxsz (5)
200#define decode_open_maxsz (op_decode_hdr_maxsz + \
201 decode_stateid_maxsz + \
202 decode_change_info_maxsz + 1 + \
203 nfs4_fattr_bitmap_maxsz + \
204 decode_delegation_maxsz)
205#define encode_open_confirm_maxsz \
206 (op_encode_hdr_maxsz + \
207 encode_stateid_maxsz + 1)
208#define decode_open_confirm_maxsz \
209 (op_decode_hdr_maxsz + \
210 decode_stateid_maxsz)
211#define encode_open_downgrade_maxsz \
212 (op_encode_hdr_maxsz + \
213 encode_stateid_maxsz + 1 + \
214 encode_share_access_maxsz)
215#define decode_open_downgrade_maxsz \
216 (op_decode_hdr_maxsz + \
217 decode_stateid_maxsz)
218#define encode_close_maxsz (op_encode_hdr_maxsz + \
219 1 + encode_stateid_maxsz)
220#define decode_close_maxsz (op_decode_hdr_maxsz + \
221 decode_stateid_maxsz)
222#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
223 encode_stateid_maxsz + \
224 encode_attrs_maxsz)
225#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
226 nfs4_fattr_bitmap_maxsz)
227#define encode_read_maxsz (op_encode_hdr_maxsz + \
228 encode_stateid_maxsz + 3)
229#define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz)
230#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
231 2 + encode_verifier_maxsz + 5 + \
232 nfs4_label_maxsz)
233#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
234 decode_verifier_maxsz + pagepad_maxsz)
235#define encode_readlink_maxsz (op_encode_hdr_maxsz)
236#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz)
237#define encode_write_maxsz (op_encode_hdr_maxsz + \
238 encode_stateid_maxsz + 4)
239#define decode_write_maxsz (op_decode_hdr_maxsz + \
240 2 + decode_verifier_maxsz)
241#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
242#define decode_commit_maxsz (op_decode_hdr_maxsz + \
243 decode_verifier_maxsz)
244#define encode_remove_maxsz (op_encode_hdr_maxsz + \
245 nfs4_name_maxsz)
246#define decode_remove_maxsz (op_decode_hdr_maxsz + \
247 decode_change_info_maxsz)
248#define encode_rename_maxsz (op_encode_hdr_maxsz + \
249 2 * nfs4_name_maxsz)
250#define decode_rename_maxsz (op_decode_hdr_maxsz + \
251 decode_change_info_maxsz + \
252 decode_change_info_maxsz)
253#define encode_link_maxsz (op_encode_hdr_maxsz + \
254 nfs4_name_maxsz)
255#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
256#define encode_lockowner_maxsz (7)
257#define encode_lock_maxsz (op_encode_hdr_maxsz + \
258 7 + \
259 1 + encode_stateid_maxsz + 1 + \
260 encode_lockowner_maxsz)
261#define decode_lock_denied_maxsz \
262 (8 + decode_lockowner_maxsz)
263#define decode_lock_maxsz (op_decode_hdr_maxsz + \
264 decode_lock_denied_maxsz)
265#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
266 encode_lockowner_maxsz)
267#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
268 decode_lock_denied_maxsz)
269#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
270 encode_stateid_maxsz + \
271 4)
272#define decode_locku_maxsz (op_decode_hdr_maxsz + \
273 decode_stateid_maxsz)
274#define encode_release_lockowner_maxsz \
275 (op_encode_hdr_maxsz + \
276 encode_lockowner_maxsz)
277#define decode_release_lockowner_maxsz \
278 (op_decode_hdr_maxsz)
279#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
280#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
281#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
282 1 + nfs4_name_maxsz + \
283 1 + \
284 nfs4_fattr_maxsz)
285#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
286#define encode_create_maxsz (op_encode_hdr_maxsz + \
287 1 + 2 + nfs4_name_maxsz + \
288 encode_attrs_maxsz)
289#define decode_create_maxsz (op_decode_hdr_maxsz + \
290 decode_change_info_maxsz + \
291 nfs4_fattr_bitmap_maxsz)
292#define encode_statfs_maxsz (encode_getattr_maxsz)
293#define decode_statfs_maxsz (decode_getattr_maxsz)
294#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
295#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
296#define encode_getacl_maxsz (encode_getattr_maxsz)
297#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
298 nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz)
299#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
300 encode_stateid_maxsz + 3)
301#define decode_setacl_maxsz (decode_setattr_maxsz)
302#define encode_fs_locations_maxsz \
303 (encode_getattr_maxsz)
304#define decode_fs_locations_maxsz \
305 (pagepad_maxsz)
306#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
307#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
308
309#if defined(CONFIG_NFS_V4_1)
310#define NFS4_MAX_MACHINE_NAME_LEN (64)
311#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
312 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
313
314#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
315 encode_verifier_maxsz + \
316 1 /* co_ownerid.len */ + \
317 /* eia_clientowner */ \
318 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
319 1 /* flags */ + \
320 1 /* spa_how */ + \
321 /* max is SP4_MACH_CRED (for now) */ + \
322 1 + NFS4_OP_MAP_NUM_WORDS + \
323 1 + NFS4_OP_MAP_NUM_WORDS + \
324 1 /* implementation id array of size 1 */ + \
325 1 /* nii_domain */ + \
326 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
327 1 /* nii_name */ + \
328 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
329 3 /* nii_date */)
330#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
331 2 /* eir_clientid */ + \
332 1 /* eir_sequenceid */ + \
333 1 /* eir_flags */ + \
334 1 /* spr_how */ + \
335 /* max is SP4_MACH_CRED (for now) */ + \
336 1 + NFS4_OP_MAP_NUM_WORDS + \
337 1 + NFS4_OP_MAP_NUM_WORDS + \
338 2 /* eir_server_owner.so_minor_id */ + \
339 /* eir_server_owner.so_major_id<> */ \
340 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
341 /* eir_server_scope<> */ \
342 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
343 1 /* eir_server_impl_id array length */ + \
344 1 /* nii_domain */ + \
345 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
346 1 /* nii_name */ + \
347 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
348 3 /* nii_date */)
349#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
350#define decode_channel_attrs_maxsz (6 + \
351 1 /* ca_rdma_ird.len */ + \
352 1 /* ca_rdma_ird */)
353#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
354 2 /* csa_clientid */ + \
355 1 /* csa_sequence */ + \
356 1 /* csa_flags */ + \
357 encode_channel_attrs_maxsz + \
358 encode_channel_attrs_maxsz + \
359 1 /* csa_cb_program */ + \
360 1 /* csa_sec_parms.len (1) */ + \
361 1 /* cb_secflavor (AUTH_SYS) */ + \
362 1 /* stamp */ + \
363 1 /* machinename.len */ + \
364 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
365 1 /* uid */ + \
366 1 /* gid */ + \
367 1 /* gids.len (0) */)
368#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
369 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
370 1 /* csr_sequence */ + \
371 1 /* csr_flags */ + \
372 decode_channel_attrs_maxsz + \
373 decode_channel_attrs_maxsz)
374#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
375 /* bctsa_sessid */ \
376 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
377 1 /* bctsa_dir */ + \
378 1 /* bctsa_use_conn_in_rdma_mode */)
379#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
380 /* bctsr_sessid */ \
381 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
382 1 /* bctsr_dir */ + \
383 1 /* bctsr_use_conn_in_rdma_mode */)
384#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
385#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
386#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
387#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
388#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
389 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
390#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
392#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
393#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
394#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
395 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
396 1 /* layout type */ + \
397 1 /* maxcount */ + \
398 1 /* bitmap size */ + \
399 1 /* notification bitmap length */ + \
400 1 /* notification bitmap, word 0 */)
401#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
402 1 /* layout type */ + \
403 1 /* opaque devaddr4 length */ + \
404 /* devaddr4 payload is read into page */ \
405 1 /* notification bitmap length */ + \
406 1 /* notification bitmap, word 0 */ + \
407 pagepad_maxsz /* possible XDR padding */)
408#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
409 encode_stateid_maxsz)
410#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
411 decode_stateid_maxsz + \
412 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \
413 pagepad_maxsz)
414#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
415 2 /* offset */ + \
416 2 /* length */ + \
417 1 /* reclaim */ + \
418 encode_stateid_maxsz + \
419 1 /* new offset (true) */ + \
420 2 /* last byte written */ + \
421 1 /* nt_timechanged (false) */ + \
422 1 /* layoutupdate4 layout type */ + \
423 1 /* layoutupdate4 opaqueue len */)
424 /* the actual content of layoutupdate4 should
425 be allocated by drivers and spliced in
426 using xdr_write_pages */
427#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
428#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
429 encode_stateid_maxsz + \
430 1 + \
431 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
432#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
433 1 + decode_stateid_maxsz)
434#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
435#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
436#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
437 XDR_QUADLEN(NFS4_STATEID_SIZE))
438#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
439#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
440 XDR_QUADLEN(NFS4_STATEID_SIZE))
441#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
442#else /* CONFIG_NFS_V4_1 */
443#define encode_sequence_maxsz 0
444#define decode_sequence_maxsz 0
445#define encode_layoutreturn_maxsz 0
446#define decode_layoutreturn_maxsz 0
447#define encode_layoutget_maxsz 0
448#define decode_layoutget_maxsz 0
449#endif /* CONFIG_NFS_V4_1 */
450
451#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
452#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
453#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
454 encode_sequence_maxsz + \
455 encode_putfh_maxsz + \
456 encode_read_maxsz)
457#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
458 decode_sequence_maxsz + \
459 decode_putfh_maxsz + \
460 decode_read_maxsz)
461#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
462 encode_sequence_maxsz + \
463 encode_putfh_maxsz + \
464 encode_readlink_maxsz)
465#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
466 decode_sequence_maxsz + \
467 decode_putfh_maxsz + \
468 decode_readlink_maxsz)
469#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
470 encode_sequence_maxsz + \
471 encode_putfh_maxsz + \
472 encode_readdir_maxsz)
473#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
474 decode_sequence_maxsz + \
475 decode_putfh_maxsz + \
476 decode_readdir_maxsz)
477#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
478 encode_sequence_maxsz + \
479 encode_putfh_maxsz + \
480 encode_write_maxsz + \
481 encode_getattr_maxsz)
482#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
483 decode_sequence_maxsz + \
484 decode_putfh_maxsz + \
485 decode_write_maxsz + \
486 decode_getattr_maxsz)
487#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
488 encode_sequence_maxsz + \
489 encode_putfh_maxsz + \
490 encode_commit_maxsz)
491#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
492 decode_sequence_maxsz + \
493 decode_putfh_maxsz + \
494 decode_commit_maxsz)
495#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
496 encode_sequence_maxsz + \
497 encode_putfh_maxsz + \
498 encode_open_maxsz + \
499 encode_access_maxsz + \
500 encode_getfh_maxsz + \
501 encode_getattr_maxsz + \
502 encode_layoutget_maxsz)
503#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_open_maxsz + \
507 decode_access_maxsz + \
508 decode_getfh_maxsz + \
509 decode_getattr_maxsz + \
510 decode_layoutget_maxsz)
511#define NFS4_enc_open_confirm_sz \
512 (compound_encode_hdr_maxsz + \
513 encode_putfh_maxsz + \
514 encode_open_confirm_maxsz)
515#define NFS4_dec_open_confirm_sz \
516 (compound_decode_hdr_maxsz + \
517 decode_putfh_maxsz + \
518 decode_open_confirm_maxsz)
519#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
520 encode_sequence_maxsz + \
521 encode_putfh_maxsz + \
522 encode_open_maxsz + \
523 encode_access_maxsz + \
524 encode_getattr_maxsz + \
525 encode_layoutget_maxsz)
526#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
527 decode_sequence_maxsz + \
528 decode_putfh_maxsz + \
529 decode_open_maxsz + \
530 decode_access_maxsz + \
531 decode_getattr_maxsz + \
532 decode_layoutget_maxsz)
533#define NFS4_enc_open_downgrade_sz \
534 (compound_encode_hdr_maxsz + \
535 encode_sequence_maxsz + \
536 encode_putfh_maxsz + \
537 encode_layoutreturn_maxsz + \
538 encode_open_downgrade_maxsz)
539#define NFS4_dec_open_downgrade_sz \
540 (compound_decode_hdr_maxsz + \
541 decode_sequence_maxsz + \
542 decode_putfh_maxsz + \
543 decode_layoutreturn_maxsz + \
544 decode_open_downgrade_maxsz)
545#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
546 encode_sequence_maxsz + \
547 encode_putfh_maxsz + \
548 encode_layoutreturn_maxsz + \
549 encode_close_maxsz + \
550 encode_getattr_maxsz)
551#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
552 decode_sequence_maxsz + \
553 decode_putfh_maxsz + \
554 decode_layoutreturn_maxsz + \
555 decode_close_maxsz + \
556 decode_getattr_maxsz)
557#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
558 encode_sequence_maxsz + \
559 encode_putfh_maxsz + \
560 encode_setattr_maxsz + \
561 encode_getattr_maxsz)
562#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
563 decode_sequence_maxsz + \
564 decode_putfh_maxsz + \
565 decode_setattr_maxsz + \
566 decode_getattr_maxsz)
567#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
570 encode_fsinfo_maxsz)
571#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
572 decode_sequence_maxsz + \
573 decode_putfh_maxsz + \
574 decode_fsinfo_maxsz)
575#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
576 encode_renew_maxsz)
577#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
578 decode_renew_maxsz)
579#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
580 encode_setclientid_maxsz)
581#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
582 decode_setclientid_maxsz)
583#define NFS4_enc_setclientid_confirm_sz \
584 (compound_encode_hdr_maxsz + \
585 encode_setclientid_confirm_maxsz)
586#define NFS4_dec_setclientid_confirm_sz \
587 (compound_decode_hdr_maxsz + \
588 decode_setclientid_confirm_maxsz)
589#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_lock_maxsz)
593#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
594 decode_sequence_maxsz + \
595 decode_putfh_maxsz + \
596 decode_lock_maxsz)
597#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
598 encode_sequence_maxsz + \
599 encode_putfh_maxsz + \
600 encode_lockt_maxsz)
601#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
602 decode_sequence_maxsz + \
603 decode_putfh_maxsz + \
604 decode_lockt_maxsz)
605#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
606 encode_sequence_maxsz + \
607 encode_putfh_maxsz + \
608 encode_locku_maxsz)
609#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
610 decode_sequence_maxsz + \
611 decode_putfh_maxsz + \
612 decode_locku_maxsz)
613#define NFS4_enc_release_lockowner_sz \
614 (compound_encode_hdr_maxsz + \
615 encode_lockowner_maxsz)
616#define NFS4_dec_release_lockowner_sz \
617 (compound_decode_hdr_maxsz + \
618 decode_lockowner_maxsz)
619#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putfh_maxsz + \
622 encode_access_maxsz + \
623 encode_getattr_maxsz)
624#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
625 decode_sequence_maxsz + \
626 decode_putfh_maxsz + \
627 decode_access_maxsz + \
628 decode_getattr_maxsz)
629#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_getattr_maxsz + \
633 encode_renew_maxsz)
634#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
635 decode_sequence_maxsz + \
636 decode_putfh_maxsz + \
637 decode_getattr_maxsz + \
638 decode_renew_maxsz)
639#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
640 encode_sequence_maxsz + \
641 encode_putfh_maxsz + \
642 encode_lookup_maxsz + \
643 encode_getattr_maxsz + \
644 encode_getfh_maxsz)
645#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
646 decode_sequence_maxsz + \
647 decode_putfh_maxsz + \
648 decode_lookup_maxsz + \
649 decode_getattr_maxsz + \
650 decode_getfh_maxsz)
651#define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \
652 encode_sequence_maxsz + \
653 encode_putfh_maxsz + \
654 encode_lookupp_maxsz + \
655 encode_getattr_maxsz + \
656 encode_getfh_maxsz)
657#define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \
658 decode_sequence_maxsz + \
659 decode_putfh_maxsz + \
660 decode_lookupp_maxsz + \
661 decode_getattr_maxsz + \
662 decode_getfh_maxsz)
663#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
664 encode_sequence_maxsz + \
665 encode_putrootfh_maxsz + \
666 encode_getattr_maxsz + \
667 encode_getfh_maxsz)
668#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
669 decode_sequence_maxsz + \
670 decode_putrootfh_maxsz + \
671 decode_getattr_maxsz + \
672 decode_getfh_maxsz)
673#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
674 encode_sequence_maxsz + \
675 encode_putfh_maxsz + \
676 encode_remove_maxsz)
677#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
678 decode_sequence_maxsz + \
679 decode_putfh_maxsz + \
680 decode_remove_maxsz)
681#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
682 encode_sequence_maxsz + \
683 encode_putfh_maxsz + \
684 encode_savefh_maxsz + \
685 encode_putfh_maxsz + \
686 encode_rename_maxsz)
687#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
688 decode_sequence_maxsz + \
689 decode_putfh_maxsz + \
690 decode_savefh_maxsz + \
691 decode_putfh_maxsz + \
692 decode_rename_maxsz)
693#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
694 encode_sequence_maxsz + \
695 encode_putfh_maxsz + \
696 encode_savefh_maxsz + \
697 encode_putfh_maxsz + \
698 encode_link_maxsz + \
699 encode_restorefh_maxsz + \
700 encode_getattr_maxsz)
701#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_savefh_maxsz + \
705 decode_putfh_maxsz + \
706 decode_link_maxsz + \
707 decode_restorefh_maxsz + \
708 decode_getattr_maxsz)
709#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
710 encode_sequence_maxsz + \
711 encode_putfh_maxsz + \
712 encode_symlink_maxsz + \
713 encode_getattr_maxsz + \
714 encode_getfh_maxsz)
715#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
716 decode_sequence_maxsz + \
717 decode_putfh_maxsz + \
718 decode_symlink_maxsz + \
719 decode_getattr_maxsz + \
720 decode_getfh_maxsz)
721#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
722 encode_sequence_maxsz + \
723 encode_putfh_maxsz + \
724 encode_create_maxsz + \
725 encode_getfh_maxsz + \
726 encode_getattr_maxsz)
727#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz + \
729 decode_putfh_maxsz + \
730 decode_create_maxsz + \
731 decode_getfh_maxsz + \
732 decode_getattr_maxsz)
733#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
734 encode_sequence_maxsz + \
735 encode_putfh_maxsz + \
736 encode_getattr_maxsz)
737#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_getattr_maxsz)
741#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
742 encode_sequence_maxsz + \
743 encode_putfh_maxsz + \
744 encode_statfs_maxsz)
745#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
746 decode_sequence_maxsz + \
747 decode_putfh_maxsz + \
748 decode_statfs_maxsz)
749#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
750 encode_sequence_maxsz + \
751 encode_putfh_maxsz + \
752 encode_getattr_maxsz)
753#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
754 decode_sequence_maxsz + \
755 decode_putfh_maxsz + \
756 decode_getattr_maxsz)
757#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
758 encode_sequence_maxsz + \
759 encode_putfh_maxsz + \
760 encode_layoutreturn_maxsz + \
761 encode_delegreturn_maxsz + \
762 encode_getattr_maxsz)
763#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
764 decode_sequence_maxsz + \
765 decode_putfh_maxsz + \
766 decode_layoutreturn_maxsz + \
767 decode_delegreturn_maxsz + \
768 decode_getattr_maxsz)
769#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
770 encode_sequence_maxsz + \
771 encode_putfh_maxsz + \
772 encode_getacl_maxsz)
773#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
774 decode_sequence_maxsz + \
775 decode_putfh_maxsz + \
776 decode_getacl_maxsz)
777#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
778 encode_sequence_maxsz + \
779 encode_putfh_maxsz + \
780 encode_setacl_maxsz)
781#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz + \
783 decode_putfh_maxsz + \
784 decode_setacl_maxsz)
785#define NFS4_enc_fs_locations_sz \
786 (compound_encode_hdr_maxsz + \
787 encode_sequence_maxsz + \
788 encode_putfh_maxsz + \
789 encode_lookup_maxsz + \
790 encode_fs_locations_maxsz + \
791 encode_renew_maxsz)
792#define NFS4_dec_fs_locations_sz \
793 (compound_decode_hdr_maxsz + \
794 decode_sequence_maxsz + \
795 decode_putfh_maxsz + \
796 decode_lookup_maxsz + \
797 decode_fs_locations_maxsz + \
798 decode_renew_maxsz)
799#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
800 encode_sequence_maxsz + \
801 encode_putfh_maxsz + \
802 encode_secinfo_maxsz)
803#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
804 decode_sequence_maxsz + \
805 decode_putfh_maxsz + \
806 decode_secinfo_maxsz)
807#define NFS4_enc_fsid_present_sz \
808 (compound_encode_hdr_maxsz + \
809 encode_sequence_maxsz + \
810 encode_putfh_maxsz + \
811 encode_getfh_maxsz + \
812 encode_renew_maxsz)
813#define NFS4_dec_fsid_present_sz \
814 (compound_decode_hdr_maxsz + \
815 decode_sequence_maxsz + \
816 decode_putfh_maxsz + \
817 decode_getfh_maxsz + \
818 decode_renew_maxsz)
819#if defined(CONFIG_NFS_V4_1)
820#define NFS4_enc_bind_conn_to_session_sz \
821 (compound_encode_hdr_maxsz + \
822 encode_bind_conn_to_session_maxsz)
823#define NFS4_dec_bind_conn_to_session_sz \
824 (compound_decode_hdr_maxsz + \
825 decode_bind_conn_to_session_maxsz)
826#define NFS4_enc_exchange_id_sz \
827 (compound_encode_hdr_maxsz + \
828 encode_exchange_id_maxsz)
829#define NFS4_dec_exchange_id_sz \
830 (compound_decode_hdr_maxsz + \
831 decode_exchange_id_maxsz)
832#define NFS4_enc_create_session_sz \
833 (compound_encode_hdr_maxsz + \
834 encode_create_session_maxsz)
835#define NFS4_dec_create_session_sz \
836 (compound_decode_hdr_maxsz + \
837 decode_create_session_maxsz)
838#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
839 encode_destroy_session_maxsz)
840#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
841 decode_destroy_session_maxsz)
842#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
843 encode_destroy_clientid_maxsz)
844#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
845 decode_destroy_clientid_maxsz)
846#define NFS4_enc_sequence_sz \
847 (compound_decode_hdr_maxsz + \
848 encode_sequence_maxsz)
849#define NFS4_dec_sequence_sz \
850 (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz)
852#endif
853#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
854 encode_sequence_maxsz + \
855 encode_putrootfh_maxsz + \
856 encode_fsinfo_maxsz)
857#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
858 decode_sequence_maxsz + \
859 decode_putrootfh_maxsz + \
860 decode_fsinfo_maxsz)
861#if defined(CONFIG_NFS_V4_1)
862#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
863 encode_sequence_maxsz + \
864 encode_reclaim_complete_maxsz)
865#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
866 decode_sequence_maxsz + \
867 decode_reclaim_complete_maxsz)
868#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
869 encode_sequence_maxsz +\
870 encode_getdeviceinfo_maxsz)
871#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
872 decode_sequence_maxsz + \
873 decode_getdeviceinfo_maxsz)
874#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
875 encode_sequence_maxsz + \
876 encode_putfh_maxsz + \
877 encode_layoutget_maxsz)
878#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
879 decode_sequence_maxsz + \
880 decode_putfh_maxsz + \
881 decode_layoutget_maxsz)
882#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
883 encode_sequence_maxsz +\
884 encode_putfh_maxsz + \
885 encode_layoutcommit_maxsz + \
886 encode_getattr_maxsz)
887#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
888 decode_sequence_maxsz + \
889 decode_putfh_maxsz + \
890 decode_layoutcommit_maxsz + \
891 decode_getattr_maxsz)
892#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
893 encode_sequence_maxsz + \
894 encode_putfh_maxsz + \
895 encode_layoutreturn_maxsz)
896#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
897 decode_sequence_maxsz + \
898 decode_putfh_maxsz + \
899 decode_layoutreturn_maxsz)
900#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
901 encode_sequence_maxsz + \
902 encode_putrootfh_maxsz +\
903 encode_secinfo_no_name_maxsz)
904#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
905 decode_sequence_maxsz + \
906 decode_putrootfh_maxsz + \
907 decode_secinfo_no_name_maxsz)
908#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
909 encode_sequence_maxsz + \
910 encode_test_stateid_maxsz)
911#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
912 decode_sequence_maxsz + \
913 decode_test_stateid_maxsz)
914#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
915 encode_sequence_maxsz + \
916 encode_free_stateid_maxsz)
917#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
918 decode_sequence_maxsz + \
919 decode_free_stateid_maxsz)
920
921const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
922 compound_encode_hdr_maxsz +
923 encode_sequence_maxsz +
924 encode_putfh_maxsz +
925 encode_getattr_maxsz) *
926 XDR_UNIT);
927
928const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
929 compound_decode_hdr_maxsz +
930 decode_sequence_maxsz +
931 decode_putfh_maxsz) *
932 XDR_UNIT);
933
934const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
935 compound_decode_hdr_maxsz +
936 decode_sequence_maxsz) *
937 XDR_UNIT);
938EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
939#endif /* CONFIG_NFS_V4_1 */
940
941static const umode_t nfs_type2fmt[] = {
942 [NF4BAD] = 0,
943 [NF4REG] = S_IFREG,
944 [NF4DIR] = S_IFDIR,
945 [NF4BLK] = S_IFBLK,
946 [NF4CHR] = S_IFCHR,
947 [NF4LNK] = S_IFLNK,
948 [NF4SOCK] = S_IFSOCK,
949 [NF4FIFO] = S_IFIFO,
950 [NF4ATTRDIR] = 0,
951 [NF4NAMEDATTR] = 0,
952};
953
954struct compound_hdr {
955 int32_t status;
956 uint32_t nops;
957 __be32 * nops_p;
958 uint32_t taglen;
959 char * tag;
960 uint32_t replen; /* expected reply words */
961 u32 minorversion;
962};
963
964static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
965{
966 __be32 *p = xdr_reserve_space(xdr, nbytes);
967 BUG_ON(!p);
968 return p;
969}
970
971static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
972{
973 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0);
974}
975
976static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
977{
978 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0);
979}
980
981static void encode_uint32(struct xdr_stream *xdr, u32 n)
982{
983 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
984}
985
986static void encode_uint64(struct xdr_stream *xdr, u64 n)
987{
988 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
989}
990
991static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr,
992 const __u32 *bitmap, size_t len)
993{
994 ssize_t ret;
995
996 /* Trim empty words */
997 while (len > 0 && bitmap[len-1] == 0)
998 len--;
999 ret = xdr_stream_encode_uint32_array(xdr, bitmap, len);
1000 if (WARN_ON_ONCE(ret < 0))
1001 return ret;
1002 return len;
1003}
1004
1005static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask,
1006 __u32 *res, size_t len)
1007{
1008 size_t i;
1009 __u32 tmp;
1010
1011 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0))
1012 len--;
1013 for (i = len; i-- > 0;) {
1014 tmp = bitmap[i] & mask[i];
1015 res[i] = tmp;
1016 }
1017 return len;
1018}
1019
1020static void encode_nfs4_seqid(struct xdr_stream *xdr,
1021 const struct nfs_seqid *seqid)
1022{
1023 if (seqid != NULL)
1024 encode_uint32(xdr, seqid->sequence->counter);
1025 else
1026 encode_uint32(xdr, 0);
1027}
1028
1029static void encode_compound_hdr(struct xdr_stream *xdr,
1030 struct rpc_rqst *req,
1031 struct compound_hdr *hdr)
1032{
1033 __be32 *p;
1034
1035 /* initialize running count of expected bytes in reply.
1036 * NOTE: the replied tag SHOULD be the same is the one sent,
1037 * but this is not required as a MUST for the server to do so. */
1038 hdr->replen = 3 + hdr->taglen;
1039
1040 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
1041 encode_string(xdr, hdr->taglen, hdr->tag);
1042 p = reserve_space(xdr, 8);
1043 *p++ = cpu_to_be32(hdr->minorversion);
1044 hdr->nops_p = p;
1045 *p = cpu_to_be32(hdr->nops);
1046}
1047
1048static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
1049 uint32_t replen,
1050 struct compound_hdr *hdr)
1051{
1052 encode_uint32(xdr, op);
1053 hdr->nops++;
1054 hdr->replen += replen;
1055}
1056
1057static void encode_nops(struct compound_hdr *hdr)
1058{
1059 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
1060 *hdr->nops_p = htonl(hdr->nops);
1061}
1062
1063static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1064{
1065 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
1066}
1067
1068static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
1069{
1070 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1071}
1072
1073static __be32 *
1074xdr_encode_nfstime4(__be32 *p, const struct timespec64 *t)
1075{
1076 p = xdr_encode_hyper(p, t->tv_sec);
1077 *p++ = cpu_to_be32(t->tv_nsec);
1078 return p;
1079}
1080
1081static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1082 const struct nfs4_label *label,
1083 const umode_t *umask,
1084 const struct nfs_server *server,
1085 const uint32_t attrmask[])
1086{
1087 char owner_name[IDMAP_NAMESZ];
1088 char owner_group[IDMAP_NAMESZ];
1089 int owner_namelen = 0;
1090 int owner_grouplen = 0;
1091 __be32 *p;
1092 uint32_t len = 0;
1093 uint32_t bmval[3] = { 0 };
1094
1095 /*
1096 * We reserve enough space to write the entire attribute buffer at once.
1097 */
1098 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) {
1099 bmval[0] |= FATTR4_WORD0_SIZE;
1100 len += 8;
1101 }
1102 if (iap->ia_valid & ATTR_MODE) {
1103 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) {
1104 bmval[2] |= FATTR4_WORD2_MODE_UMASK;
1105 len += 8;
1106 } else if (attrmask[1] & FATTR4_WORD1_MODE) {
1107 bmval[1] |= FATTR4_WORD1_MODE;
1108 len += 4;
1109 }
1110 }
1111 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) {
1112 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1113 if (owner_namelen < 0) {
1114 dprintk("nfs: couldn't resolve uid %d to string\n",
1115 from_kuid(&init_user_ns, iap->ia_uid));
1116 /* XXX */
1117 strcpy(owner_name, "nobody");
1118 owner_namelen = sizeof("nobody") - 1;
1119 /* goto out; */
1120 }
1121 bmval[1] |= FATTR4_WORD1_OWNER;
1122 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1123 }
1124 if ((iap->ia_valid & ATTR_GID) &&
1125 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) {
1126 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1127 if (owner_grouplen < 0) {
1128 dprintk("nfs: couldn't resolve gid %d to string\n",
1129 from_kgid(&init_user_ns, iap->ia_gid));
1130 strcpy(owner_group, "nobody");
1131 owner_grouplen = sizeof("nobody") - 1;
1132 /* goto out; */
1133 }
1134 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1135 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1136 }
1137 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1138 if (iap->ia_valid & ATTR_ATIME_SET) {
1139 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1140 len += 4 + (nfstime4_maxsz << 2);
1141 } else if (iap->ia_valid & ATTR_ATIME) {
1142 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1143 len += 4;
1144 }
1145 }
1146 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1147 if (iap->ia_valid & ATTR_MTIME_SET) {
1148 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1149 len += 4 + (nfstime4_maxsz << 2);
1150 } else if (iap->ia_valid & ATTR_MTIME) {
1151 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1152 len += 4;
1153 }
1154 }
1155
1156 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1157 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1158 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1159 }
1160
1161 xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval));
1162 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len);
1163
1164 if (bmval[0] & FATTR4_WORD0_SIZE)
1165 p = xdr_encode_hyper(p, iap->ia_size);
1166 if (bmval[1] & FATTR4_WORD1_MODE)
1167 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1168 if (bmval[1] & FATTR4_WORD1_OWNER)
1169 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1170 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1171 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1172 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1173 if (iap->ia_valid & ATTR_ATIME_SET) {
1174 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1175 p = xdr_encode_nfstime4(p, &iap->ia_atime);
1176 } else
1177 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1178 }
1179 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1180 if (iap->ia_valid & ATTR_MTIME_SET) {
1181 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1182 p = xdr_encode_nfstime4(p, &iap->ia_mtime);
1183 } else
1184 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1185 }
1186 if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1187 *p++ = cpu_to_be32(label->lfs);
1188 *p++ = cpu_to_be32(label->pi);
1189 *p++ = cpu_to_be32(label->len);
1190 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1191 }
1192 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
1193 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1194 *p++ = cpu_to_be32(*umask);
1195 }
1196
1197/* out: */
1198}
1199
1200static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1201{
1202 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1203 encode_uint32(xdr, access);
1204}
1205
1206static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1207{
1208 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1209 encode_nfs4_seqid(xdr, arg->seqid);
1210 encode_nfs4_stateid(xdr, &arg->stateid);
1211}
1212
1213static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1214{
1215 __be32 *p;
1216
1217 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1218 p = reserve_space(xdr, 12);
1219 p = xdr_encode_hyper(p, args->offset);
1220 *p = cpu_to_be32(args->count);
1221}
1222
1223static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1224{
1225 __be32 *p;
1226
1227 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1228 encode_uint32(xdr, create->ftype);
1229
1230 switch (create->ftype) {
1231 case NF4LNK:
1232 p = reserve_space(xdr, 4);
1233 *p = cpu_to_be32(create->u.symlink.len);
1234 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1235 create->u.symlink.len);
1236 xdr->buf->flags |= XDRBUF_WRITE;
1237 break;
1238
1239 case NF4BLK: case NF4CHR:
1240 p = reserve_space(xdr, 8);
1241 *p++ = cpu_to_be32(create->u.device.specdata1);
1242 *p = cpu_to_be32(create->u.device.specdata2);
1243 break;
1244
1245 default:
1246 break;
1247 }
1248
1249 encode_string(xdr, create->name->len, create->name->name);
1250 encode_attrs(xdr, create->attrs, create->label, &create->umask,
1251 create->server, create->server->attr_bitmask);
1252}
1253
1254static void encode_getattr(struct xdr_stream *xdr,
1255 const __u32 *bitmap, const __u32 *mask, size_t len,
1256 struct compound_hdr *hdr)
1257{
1258 __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz];
1259
1260 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1261 if (mask) {
1262 if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap)))
1263 len = ARRAY_SIZE(masked_bitmap);
1264 len = mask_bitmap4(bitmap, mask, masked_bitmap, len);
1265 bitmap = masked_bitmap;
1266 }
1267 xdr_encode_bitmap4(xdr, bitmap, len);
1268}
1269
1270static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1271{
1272 encode_getattr(xdr, nfs4_fattr_bitmap, bitmask,
1273 ARRAY_SIZE(nfs4_fattr_bitmap), hdr);
1274}
1275
1276static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1277 const u32 *open_bitmap,
1278 struct compound_hdr *hdr)
1279{
1280 encode_getattr(xdr, open_bitmap, bitmask, 3, hdr);
1281}
1282
1283static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1284{
1285 encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask,
1286 ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr);
1287}
1288
1289static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1290{
1291 encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask,
1292 ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr);
1293}
1294
1295static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1296{
1297 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1298}
1299
1300static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1301{
1302 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1303 encode_string(xdr, name->len, name->name);
1304}
1305
1306static inline int nfs4_lock_type(struct file_lock *fl, int block)
1307{
1308 if (fl->fl_type == F_RDLCK)
1309 return block ? NFS4_READW_LT : NFS4_READ_LT;
1310 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1311}
1312
1313static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1314{
1315 if (fl->fl_end == OFFSET_MAX)
1316 return ~(uint64_t)0;
1317 return fl->fl_end - fl->fl_start + 1;
1318}
1319
1320static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1321{
1322 __be32 *p;
1323
1324 p = reserve_space(xdr, 32);
1325 p = xdr_encode_hyper(p, lowner->clientid);
1326 *p++ = cpu_to_be32(20);
1327 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1328 *p++ = cpu_to_be32(lowner->s_dev);
1329 xdr_encode_hyper(p, lowner->id);
1330}
1331
1332/*
1333 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1334 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1335 */
1336static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1337{
1338 __be32 *p;
1339
1340 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1341 p = reserve_space(xdr, 28);
1342 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1343 *p++ = cpu_to_be32(args->reclaim);
1344 p = xdr_encode_hyper(p, args->fl->fl_start);
1345 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1346 *p = cpu_to_be32(args->new_lock_owner);
1347 if (args->new_lock_owner){
1348 encode_nfs4_seqid(xdr, args->open_seqid);
1349 encode_nfs4_stateid(xdr, &args->open_stateid);
1350 encode_nfs4_seqid(xdr, args->lock_seqid);
1351 encode_lockowner(xdr, &args->lock_owner);
1352 }
1353 else {
1354 encode_nfs4_stateid(xdr, &args->lock_stateid);
1355 encode_nfs4_seqid(xdr, args->lock_seqid);
1356 }
1357}
1358
1359static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1360{
1361 __be32 *p;
1362
1363 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1364 p = reserve_space(xdr, 20);
1365 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1366 p = xdr_encode_hyper(p, args->fl->fl_start);
1367 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1368 encode_lockowner(xdr, &args->lock_owner);
1369}
1370
1371static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1372{
1373 __be32 *p;
1374
1375 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1376 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1377 encode_nfs4_seqid(xdr, args->seqid);
1378 encode_nfs4_stateid(xdr, &args->stateid);
1379 p = reserve_space(xdr, 16);
1380 p = xdr_encode_hyper(p, args->fl->fl_start);
1381 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1382}
1383
1384static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1385{
1386 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1387 encode_lockowner(xdr, lowner);
1388}
1389
1390static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1391{
1392 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1393 encode_string(xdr, name->len, name->name);
1394}
1395
1396static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr)
1397{
1398 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr);
1399}
1400
1401static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1402{
1403 __be32 *p;
1404
1405 p = reserve_space(xdr, 8);
1406 *p++ = cpu_to_be32(share_access);
1407 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1408}
1409
1410static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1411{
1412 __be32 *p;
1413 /*
1414 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1415 * owner 4 = 32
1416 */
1417 encode_nfs4_seqid(xdr, arg->seqid);
1418 encode_share_access(xdr, arg->share_access);
1419 p = reserve_space(xdr, 36);
1420 p = xdr_encode_hyper(p, arg->clientid);
1421 *p++ = cpu_to_be32(24);
1422 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1423 *p++ = cpu_to_be32(arg->server->s_dev);
1424 *p++ = cpu_to_be32(arg->id.uniquifier);
1425 xdr_encode_hyper(p, arg->id.create_time);
1426}
1427
1428static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1429{
1430 __be32 *p;
1431
1432 p = reserve_space(xdr, 4);
1433 switch(arg->createmode) {
1434 case NFS4_CREATE_UNCHECKED:
1435 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1436 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1437 arg->server, arg->server->attr_bitmask);
1438 break;
1439 case NFS4_CREATE_GUARDED:
1440 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1441 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1442 arg->server, arg->server->attr_bitmask);
1443 break;
1444 case NFS4_CREATE_EXCLUSIVE:
1445 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1446 encode_nfs4_verifier(xdr, &arg->u.verifier);
1447 break;
1448 case NFS4_CREATE_EXCLUSIVE4_1:
1449 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1450 encode_nfs4_verifier(xdr, &arg->u.verifier);
1451 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1452 arg->server, arg->server->exclcreat_bitmask);
1453 }
1454}
1455
1456static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1457{
1458 __be32 *p;
1459
1460 p = reserve_space(xdr, 4);
1461 switch (arg->open_flags & O_CREAT) {
1462 case 0:
1463 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1464 break;
1465 default:
1466 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1467 encode_createmode(xdr, arg);
1468 }
1469}
1470
1471static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1472{
1473 __be32 *p;
1474
1475 p = reserve_space(xdr, 4);
1476 switch (delegation_type) {
1477 case 0:
1478 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1479 break;
1480 case FMODE_READ:
1481 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1482 break;
1483 case FMODE_WRITE|FMODE_READ:
1484 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1485 break;
1486 default:
1487 BUG();
1488 }
1489}
1490
1491static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1492{
1493 __be32 *p;
1494
1495 p = reserve_space(xdr, 4);
1496 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1497 encode_string(xdr, name->len, name->name);
1498}
1499
1500static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1501{
1502 __be32 *p;
1503
1504 p = reserve_space(xdr, 4);
1505 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1506 encode_delegation_type(xdr, type);
1507}
1508
1509static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1510{
1511 __be32 *p;
1512
1513 p = reserve_space(xdr, 4);
1514 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1515 encode_nfs4_stateid(xdr, stateid);
1516 encode_string(xdr, name->len, name->name);
1517}
1518
1519static inline void encode_claim_fh(struct xdr_stream *xdr)
1520{
1521 __be32 *p;
1522
1523 p = reserve_space(xdr, 4);
1524 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1525}
1526
1527static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1528{
1529 __be32 *p;
1530
1531 p = reserve_space(xdr, 4);
1532 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1533 encode_nfs4_stateid(xdr, stateid);
1534}
1535
1536static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1537{
1538 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1539 encode_openhdr(xdr, arg);
1540 encode_opentype(xdr, arg);
1541 switch (arg->claim) {
1542 case NFS4_OPEN_CLAIM_NULL:
1543 encode_claim_null(xdr, arg->name);
1544 break;
1545 case NFS4_OPEN_CLAIM_PREVIOUS:
1546 encode_claim_previous(xdr, arg->u.delegation_type);
1547 break;
1548 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1549 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1550 break;
1551 case NFS4_OPEN_CLAIM_FH:
1552 encode_claim_fh(xdr);
1553 break;
1554 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1555 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1556 break;
1557 default:
1558 BUG();
1559 }
1560}
1561
1562static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1563{
1564 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1565 encode_nfs4_stateid(xdr, arg->stateid);
1566 encode_nfs4_seqid(xdr, arg->seqid);
1567}
1568
1569static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1570{
1571 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1572 encode_nfs4_stateid(xdr, &arg->stateid);
1573 encode_nfs4_seqid(xdr, arg->seqid);
1574 encode_share_access(xdr, arg->share_access);
1575}
1576
1577static void
1578encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1579{
1580 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1581 encode_string(xdr, fh->size, fh->data);
1582}
1583
1584static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1585{
1586 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1587}
1588
1589static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1590 struct compound_hdr *hdr)
1591{
1592 __be32 *p;
1593
1594 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1595 encode_nfs4_stateid(xdr, &args->stateid);
1596
1597 p = reserve_space(xdr, 12);
1598 p = xdr_encode_hyper(p, args->offset);
1599 *p = cpu_to_be32(args->count);
1600}
1601
1602static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1603{
1604 uint32_t attrs[3] = {
1605 FATTR4_WORD0_RDATTR_ERROR,
1606 FATTR4_WORD1_MOUNTED_ON_FILEID,
1607 };
1608 uint32_t dircount = readdir->count >> 1;
1609 __be32 *p, verf[2];
1610 uint32_t attrlen = 0;
1611 unsigned int i;
1612
1613 if (readdir->plus) {
1614 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1615 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1616 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1617 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1618 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1619 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1620 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1621 dircount >>= 1;
1622 }
1623 /* Use mounted_on_fileid only if the server supports it */
1624 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1625 attrs[0] |= FATTR4_WORD0_FILEID;
1626 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1627 attrs[i] &= readdir->bitmask[i];
1628 if (attrs[i] != 0)
1629 attrlen = i+1;
1630 }
1631
1632 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1633 encode_uint64(xdr, readdir->cookie);
1634 encode_nfs4_verifier(xdr, &readdir->verifier);
1635 p = reserve_space(xdr, 12 + (attrlen << 2));
1636 *p++ = cpu_to_be32(dircount);
1637 *p++ = cpu_to_be32(readdir->count);
1638 *p++ = cpu_to_be32(attrlen);
1639 for (i = 0; i < attrlen; i++)
1640 *p++ = cpu_to_be32(attrs[i]);
1641 memcpy(verf, readdir->verifier.data, sizeof(verf));
1642
1643 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1644 __func__,
1645 (unsigned long long)readdir->cookie,
1646 verf[0], verf[1],
1647 attrs[0] & readdir->bitmask[0],
1648 attrs[1] & readdir->bitmask[1],
1649 attrs[2] & readdir->bitmask[2]);
1650}
1651
1652static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1653{
1654 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1655}
1656
1657static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1658{
1659 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1660 encode_string(xdr, name->len, name->name);
1661}
1662
1663static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1664{
1665 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1666 encode_string(xdr, oldname->len, oldname->name);
1667 encode_string(xdr, newname->len, newname->name);
1668}
1669
1670static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1671 struct compound_hdr *hdr)
1672{
1673 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1674 encode_uint64(xdr, clid);
1675}
1676
1677static void
1678encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1679{
1680 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1681}
1682
1683static void
1684encode_setacl(struct xdr_stream *xdr, const struct nfs_setaclargs *arg,
1685 struct compound_hdr *hdr)
1686{
1687 __be32 *p;
1688
1689 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1690 encode_nfs4_stateid(xdr, &zero_stateid);
1691 p = reserve_space(xdr, 2*4);
1692 *p++ = cpu_to_be32(1);
1693 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1694 p = reserve_space(xdr, 4);
1695 *p = cpu_to_be32(arg->acl_len);
1696 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1697}
1698
1699static void
1700encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1701{
1702 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1703}
1704
1705static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1706{
1707 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1708 encode_nfs4_stateid(xdr, &arg->stateid);
1709 encode_attrs(xdr, arg->iap, arg->label, NULL, server,
1710 server->attr_bitmask);
1711}
1712
1713static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1714{
1715 __be32 *p;
1716
1717 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1718 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1719
1720 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1721 setclientid->sc_clnt->cl_owner_id);
1722 p = reserve_space(xdr, 4);
1723 *p = cpu_to_be32(setclientid->sc_prog);
1724 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1725 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1726 p = reserve_space(xdr, 4);
1727 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1728}
1729
1730static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1731{
1732 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1733 decode_setclientid_confirm_maxsz, hdr);
1734 encode_uint64(xdr, arg->clientid);
1735 encode_nfs4_verifier(xdr, &arg->confirm);
1736}
1737
1738static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1739 struct compound_hdr *hdr)
1740{
1741 __be32 *p;
1742
1743 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1744 encode_nfs4_stateid(xdr, &args->stateid);
1745
1746 p = reserve_space(xdr, 16);
1747 p = xdr_encode_hyper(p, args->offset);
1748 *p++ = cpu_to_be32(args->stable);
1749 *p = cpu_to_be32(args->count);
1750
1751 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1752}
1753
1754static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1755{
1756 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1757 encode_nfs4_stateid(xdr, stateid);
1758}
1759
1760static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1761{
1762 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1763 encode_string(xdr, name->len, name->name);
1764}
1765
1766#if defined(CONFIG_NFS_V4_1)
1767/* NFSv4.1 operations */
1768static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1769 const struct nfs41_bind_conn_to_session_args *args,
1770 struct compound_hdr *hdr)
1771{
1772 __be32 *p;
1773
1774 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1775 decode_bind_conn_to_session_maxsz, hdr);
1776 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1777 p = xdr_reserve_space(xdr, 8);
1778 *p++ = cpu_to_be32(args->dir);
1779 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1780}
1781
1782static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map)
1783{
1784 unsigned int i;
1785 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1786 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1787 encode_uint32(xdr, op_map->u.words[i]);
1788}
1789
1790static void encode_exchange_id(struct xdr_stream *xdr,
1791 const struct nfs41_exchange_id_args *args,
1792 struct compound_hdr *hdr)
1793{
1794 __be32 *p;
1795 char impl_name[IMPL_NAME_LIMIT];
1796 int len = 0;
1797
1798 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1799 encode_nfs4_verifier(xdr, &args->verifier);
1800
1801 encode_string(xdr, strlen(args->client->cl_owner_id),
1802 args->client->cl_owner_id);
1803
1804 encode_uint32(xdr, args->flags);
1805 encode_uint32(xdr, args->state_protect.how);
1806
1807 switch (args->state_protect.how) {
1808 case SP4_NONE:
1809 break;
1810 case SP4_MACH_CRED:
1811 encode_op_map(xdr, &args->state_protect.enforce);
1812 encode_op_map(xdr, &args->state_protect.allow);
1813 break;
1814 default:
1815 WARN_ON_ONCE(1);
1816 break;
1817 }
1818
1819 if (send_implementation_id &&
1820 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1821 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1822 <= sizeof(impl_name) + 1)
1823 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1824 utsname()->sysname, utsname()->release,
1825 utsname()->version, utsname()->machine);
1826
1827 if (len > 0) {
1828 encode_uint32(xdr, 1); /* implementation id array length=1 */
1829
1830 encode_string(xdr,
1831 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1832 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1833 encode_string(xdr, len, impl_name);
1834 /* just send zeros for nii_date - the date is in nii_name */
1835 p = reserve_space(xdr, 12);
1836 p = xdr_encode_hyper(p, 0);
1837 *p = cpu_to_be32(0);
1838 } else
1839 encode_uint32(xdr, 0); /* implementation id array length=0 */
1840}
1841
1842static void encode_create_session(struct xdr_stream *xdr,
1843 const struct nfs41_create_session_args *args,
1844 struct compound_hdr *hdr)
1845{
1846 __be32 *p;
1847 struct nfs_client *clp = args->client;
1848 struct rpc_clnt *clnt = clp->cl_rpcclient;
1849 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1850 u32 max_resp_sz_cached;
1851
1852 /*
1853 * Assumes OPEN is the biggest non-idempotent compound.
1854 * 2 is the verifier.
1855 */
1856 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2)
1857 * XDR_UNIT + RPC_MAX_AUTH_SIZE;
1858
1859 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1860 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1861 p = xdr_encode_hyper(p, args->clientid);
1862 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1863 *p++ = cpu_to_be32(args->flags); /*flags */
1864
1865 /* Fore Channel */
1866 *p++ = cpu_to_be32(0); /* header padding size */
1867 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1868 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1869 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1870 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1871 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1872 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1873
1874 /* Back Channel */
1875 *p++ = cpu_to_be32(0); /* header padding size */
1876 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1877 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1878 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1879 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1880 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1881 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1882
1883 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1884 *p++ = cpu_to_be32(1);
1885 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1886
1887 /* authsys_parms rfc1831 */
1888 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1889 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1890 *p++ = cpu_to_be32(0); /* UID */
1891 *p++ = cpu_to_be32(0); /* GID */
1892 *p = cpu_to_be32(0); /* No more gids */
1893}
1894
1895static void encode_destroy_session(struct xdr_stream *xdr,
1896 const struct nfs4_session *session,
1897 struct compound_hdr *hdr)
1898{
1899 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1900 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1901}
1902
1903static void encode_destroy_clientid(struct xdr_stream *xdr,
1904 uint64_t clientid,
1905 struct compound_hdr *hdr)
1906{
1907 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1908 encode_uint64(xdr, clientid);
1909}
1910
1911static void encode_reclaim_complete(struct xdr_stream *xdr,
1912 const struct nfs41_reclaim_complete_args *args,
1913 struct compound_hdr *hdr)
1914{
1915 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1916 encode_uint32(xdr, args->one_fs);
1917}
1918#endif /* CONFIG_NFS_V4_1 */
1919
1920static void encode_sequence(struct xdr_stream *xdr,
1921 const struct nfs4_sequence_args *args,
1922 struct compound_hdr *hdr)
1923{
1924#if defined(CONFIG_NFS_V4_1)
1925 struct nfs4_session *session;
1926 struct nfs4_slot_table *tp;
1927 struct nfs4_slot *slot = args->sa_slot;
1928 __be32 *p;
1929
1930 tp = slot->table;
1931 session = tp->session;
1932 if (!session)
1933 return;
1934
1935 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1936
1937 /*
1938 * Sessionid + seqid + slotid + max slotid + cache_this
1939 */
1940 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1941 "max_slotid=%d cache_this=%d\n",
1942 __func__,
1943 ((u32 *)session->sess_id.data)[0],
1944 ((u32 *)session->sess_id.data)[1],
1945 ((u32 *)session->sess_id.data)[2],
1946 ((u32 *)session->sess_id.data)[3],
1947 slot->seq_nr, slot->slot_nr,
1948 tp->highest_used_slotid, args->sa_cache_this);
1949 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1950 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1951 *p++ = cpu_to_be32(slot->seq_nr);
1952 *p++ = cpu_to_be32(slot->slot_nr);
1953 *p++ = cpu_to_be32(tp->highest_used_slotid);
1954 *p = cpu_to_be32(args->sa_cache_this);
1955#endif /* CONFIG_NFS_V4_1 */
1956}
1957
1958#ifdef CONFIG_NFS_V4_1
1959static void
1960encode_getdeviceinfo(struct xdr_stream *xdr,
1961 const struct nfs4_getdeviceinfo_args *args,
1962 struct compound_hdr *hdr)
1963{
1964 __be32 *p;
1965
1966 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1967 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1968 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1969 NFS4_DEVICEID4_SIZE);
1970 *p++ = cpu_to_be32(args->pdev->layout_type);
1971 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1972
1973 p = reserve_space(xdr, 4 + 4);
1974 *p++ = cpu_to_be32(1); /* bitmap length */
1975 *p++ = cpu_to_be32(args->notify_types);
1976}
1977
1978static void
1979encode_layoutget(struct xdr_stream *xdr,
1980 const struct nfs4_layoutget_args *args,
1981 struct compound_hdr *hdr)
1982{
1983 __be32 *p;
1984
1985 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1986 p = reserve_space(xdr, 36);
1987 *p++ = cpu_to_be32(0); /* Signal layout available */
1988 *p++ = cpu_to_be32(args->type);
1989 *p++ = cpu_to_be32(args->range.iomode);
1990 p = xdr_encode_hyper(p, args->range.offset);
1991 p = xdr_encode_hyper(p, args->range.length);
1992 p = xdr_encode_hyper(p, args->minlength);
1993 encode_nfs4_stateid(xdr, &args->stateid);
1994 encode_uint32(xdr, args->maxcount);
1995
1996 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1997 __func__,
1998 args->type,
1999 args->range.iomode,
2000 (unsigned long)args->range.offset,
2001 (unsigned long)args->range.length,
2002 args->maxcount);
2003}
2004
2005static int
2006encode_layoutcommit(struct xdr_stream *xdr,
2007 struct inode *inode,
2008 const struct nfs4_layoutcommit_args *args,
2009 struct compound_hdr *hdr)
2010{
2011 __be32 *p;
2012
2013 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
2014 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
2015
2016 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
2017 p = reserve_space(xdr, 20);
2018 /* Only whole file layouts */
2019 p = xdr_encode_hyper(p, 0); /* offset */
2020 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
2021 *p = cpu_to_be32(0); /* reclaim */
2022 encode_nfs4_stateid(xdr, &args->stateid);
2023 if (args->lastbytewritten != U64_MAX) {
2024 p = reserve_space(xdr, 20);
2025 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
2026 p = xdr_encode_hyper(p, args->lastbytewritten);
2027 } else {
2028 p = reserve_space(xdr, 12);
2029 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2030 }
2031 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2032 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2033
2034 encode_uint32(xdr, args->layoutupdate_len);
2035 if (args->layoutupdate_pages)
2036 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2037 args->layoutupdate_len);
2038
2039 return 0;
2040}
2041
2042static void
2043encode_layoutreturn(struct xdr_stream *xdr,
2044 const struct nfs4_layoutreturn_args *args,
2045 struct compound_hdr *hdr)
2046{
2047 __be32 *p;
2048
2049 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2050 p = reserve_space(xdr, 16);
2051 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2052 *p++ = cpu_to_be32(args->layout_type);
2053 *p++ = cpu_to_be32(args->range.iomode);
2054 *p = cpu_to_be32(RETURN_FILE);
2055 p = reserve_space(xdr, 16);
2056 p = xdr_encode_hyper(p, args->range.offset);
2057 p = xdr_encode_hyper(p, args->range.length);
2058 spin_lock(&args->inode->i_lock);
2059 encode_nfs4_stateid(xdr, &args->stateid);
2060 spin_unlock(&args->inode->i_lock);
2061 if (args->ld_private->ops && args->ld_private->ops->encode)
2062 args->ld_private->ops->encode(xdr, args, args->ld_private);
2063 else
2064 encode_uint32(xdr, 0);
2065}
2066
2067static int
2068encode_secinfo_no_name(struct xdr_stream *xdr,
2069 const struct nfs41_secinfo_no_name_args *args,
2070 struct compound_hdr *hdr)
2071{
2072 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2073 encode_uint32(xdr, args->style);
2074 return 0;
2075}
2076
2077static void encode_test_stateid(struct xdr_stream *xdr,
2078 const struct nfs41_test_stateid_args *args,
2079 struct compound_hdr *hdr)
2080{
2081 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2082 encode_uint32(xdr, 1);
2083 encode_nfs4_stateid(xdr, args->stateid);
2084}
2085
2086static void encode_free_stateid(struct xdr_stream *xdr,
2087 const struct nfs41_free_stateid_args *args,
2088 struct compound_hdr *hdr)
2089{
2090 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2091 encode_nfs4_stateid(xdr, &args->stateid);
2092}
2093#else
2094static inline void
2095encode_layoutreturn(struct xdr_stream *xdr,
2096 const struct nfs4_layoutreturn_args *args,
2097 struct compound_hdr *hdr)
2098{
2099}
2100
2101static void
2102encode_layoutget(struct xdr_stream *xdr,
2103 const struct nfs4_layoutget_args *args,
2104 struct compound_hdr *hdr)
2105{
2106}
2107#endif /* CONFIG_NFS_V4_1 */
2108
2109/*
2110 * END OF "GENERIC" ENCODE ROUTINES.
2111 */
2112
2113static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2114{
2115#if defined(CONFIG_NFS_V4_1)
2116 struct nfs4_session *session = args->sa_slot->table->session;
2117 if (session)
2118 return session->clp->cl_mvops->minor_version;
2119#endif /* CONFIG_NFS_V4_1 */
2120 return 0;
2121}
2122
2123/*
2124 * Encode an ACCESS request
2125 */
2126static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2127 const void *data)
2128{
2129 const struct nfs4_accessargs *args = data;
2130 struct compound_hdr hdr = {
2131 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2132 };
2133
2134 encode_compound_hdr(xdr, req, &hdr);
2135 encode_sequence(xdr, &args->seq_args, &hdr);
2136 encode_putfh(xdr, args->fh, &hdr);
2137 encode_access(xdr, args->access, &hdr);
2138 if (args->bitmask)
2139 encode_getfattr(xdr, args->bitmask, &hdr);
2140 encode_nops(&hdr);
2141}
2142
2143/*
2144 * Encode LOOKUP request
2145 */
2146static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2147 const void *data)
2148{
2149 const struct nfs4_lookup_arg *args = data;
2150 struct compound_hdr hdr = {
2151 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2152 };
2153
2154 encode_compound_hdr(xdr, req, &hdr);
2155 encode_sequence(xdr, &args->seq_args, &hdr);
2156 encode_putfh(xdr, args->dir_fh, &hdr);
2157 encode_lookup(xdr, args->name, &hdr);
2158 encode_getfh(xdr, &hdr);
2159 encode_getfattr(xdr, args->bitmask, &hdr);
2160 encode_nops(&hdr);
2161}
2162
2163/*
2164 * Encode LOOKUPP request
2165 */
2166static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr,
2167 const void *data)
2168{
2169 const struct nfs4_lookupp_arg *args = data;
2170 struct compound_hdr hdr = {
2171 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2172 };
2173
2174 encode_compound_hdr(xdr, req, &hdr);
2175 encode_sequence(xdr, &args->seq_args, &hdr);
2176 encode_putfh(xdr, args->fh, &hdr);
2177 encode_lookupp(xdr, &hdr);
2178 encode_getfh(xdr, &hdr);
2179 encode_getfattr(xdr, args->bitmask, &hdr);
2180 encode_nops(&hdr);
2181}
2182
2183/*
2184 * Encode LOOKUP_ROOT request
2185 */
2186static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2187 struct xdr_stream *xdr,
2188 const void *data)
2189{
2190 const struct nfs4_lookup_root_arg *args = data;
2191 struct compound_hdr hdr = {
2192 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2193 };
2194
2195 encode_compound_hdr(xdr, req, &hdr);
2196 encode_sequence(xdr, &args->seq_args, &hdr);
2197 encode_putrootfh(xdr, &hdr);
2198 encode_getfh(xdr, &hdr);
2199 encode_getfattr(xdr, args->bitmask, &hdr);
2200 encode_nops(&hdr);
2201}
2202
2203/*
2204 * Encode REMOVE request
2205 */
2206static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2207 const void *data)
2208{
2209 const struct nfs_removeargs *args = data;
2210 struct compound_hdr hdr = {
2211 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2212 };
2213
2214 encode_compound_hdr(xdr, req, &hdr);
2215 encode_sequence(xdr, &args->seq_args, &hdr);
2216 encode_putfh(xdr, args->fh, &hdr);
2217 encode_remove(xdr, &args->name, &hdr);
2218 encode_nops(&hdr);
2219}
2220
2221/*
2222 * Encode RENAME request
2223 */
2224static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2225 const void *data)
2226{
2227 const struct nfs_renameargs *args = data;
2228 struct compound_hdr hdr = {
2229 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2230 };
2231
2232 encode_compound_hdr(xdr, req, &hdr);
2233 encode_sequence(xdr, &args->seq_args, &hdr);
2234 encode_putfh(xdr, args->old_dir, &hdr);
2235 encode_savefh(xdr, &hdr);
2236 encode_putfh(xdr, args->new_dir, &hdr);
2237 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2238 encode_nops(&hdr);
2239}
2240
2241/*
2242 * Encode LINK request
2243 */
2244static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2245 const void *data)
2246{
2247 const struct nfs4_link_arg *args = data;
2248 struct compound_hdr hdr = {
2249 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2250 };
2251
2252 encode_compound_hdr(xdr, req, &hdr);
2253 encode_sequence(xdr, &args->seq_args, &hdr);
2254 encode_putfh(xdr, args->fh, &hdr);
2255 encode_savefh(xdr, &hdr);
2256 encode_putfh(xdr, args->dir_fh, &hdr);
2257 encode_link(xdr, args->name, &hdr);
2258 encode_restorefh(xdr, &hdr);
2259 encode_getfattr(xdr, args->bitmask, &hdr);
2260 encode_nops(&hdr);
2261}
2262
2263/*
2264 * Encode CREATE request
2265 */
2266static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2267 const void *data)
2268{
2269 const struct nfs4_create_arg *args = data;
2270 struct compound_hdr hdr = {
2271 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2272 };
2273
2274 encode_compound_hdr(xdr, req, &hdr);
2275 encode_sequence(xdr, &args->seq_args, &hdr);
2276 encode_putfh(xdr, args->dir_fh, &hdr);
2277 encode_create(xdr, args, &hdr);
2278 encode_getfh(xdr, &hdr);
2279 encode_getfattr(xdr, args->bitmask, &hdr);
2280 encode_nops(&hdr);
2281}
2282
2283/*
2284 * Encode SYMLINK request
2285 */
2286static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2287 const void *data)
2288{
2289 const struct nfs4_create_arg *args = data;
2290
2291 nfs4_xdr_enc_create(req, xdr, args);
2292}
2293
2294/*
2295 * Encode GETATTR request
2296 */
2297static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2298 const void *data)
2299{
2300 const struct nfs4_getattr_arg *args = data;
2301 struct compound_hdr hdr = {
2302 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2303 };
2304
2305 encode_compound_hdr(xdr, req, &hdr);
2306 encode_sequence(xdr, &args->seq_args, &hdr);
2307 encode_putfh(xdr, args->fh, &hdr);
2308 encode_getfattr(xdr, args->bitmask, &hdr);
2309 encode_nops(&hdr);
2310}
2311
2312/*
2313 * Encode a CLOSE request
2314 */
2315static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2316 const void *data)
2317{
2318 const struct nfs_closeargs *args = data;
2319 struct compound_hdr hdr = {
2320 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2321 };
2322
2323 encode_compound_hdr(xdr, req, &hdr);
2324 encode_sequence(xdr, &args->seq_args, &hdr);
2325 encode_putfh(xdr, args->fh, &hdr);
2326 if (args->lr_args)
2327 encode_layoutreturn(xdr, args->lr_args, &hdr);
2328 if (args->bitmask != NULL)
2329 encode_getfattr(xdr, args->bitmask, &hdr);
2330 encode_close(xdr, args, &hdr);
2331 encode_nops(&hdr);
2332}
2333
2334/*
2335 * Encode an OPEN request
2336 */
2337static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2338 const void *data)
2339{
2340 const struct nfs_openargs *args = data;
2341 struct compound_hdr hdr = {
2342 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2343 };
2344
2345 encode_compound_hdr(xdr, req, &hdr);
2346 encode_sequence(xdr, &args->seq_args, &hdr);
2347 encode_putfh(xdr, args->fh, &hdr);
2348 encode_open(xdr, args, &hdr);
2349 encode_getfh(xdr, &hdr);
2350 if (args->access)
2351 encode_access(xdr, args->access, &hdr);
2352 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2353 if (args->lg_args) {
2354 encode_layoutget(xdr, args->lg_args, &hdr);
2355 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2356 args->lg_args->layout.pglen,
2357 hdr.replen - pagepad_maxsz);
2358 }
2359 encode_nops(&hdr);
2360}
2361
2362/*
2363 * Encode an OPEN_CONFIRM request
2364 */
2365static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2366 struct xdr_stream *xdr,
2367 const void *data)
2368{
2369 const struct nfs_open_confirmargs *args = data;
2370 struct compound_hdr hdr = {
2371 .nops = 0,
2372 };
2373
2374 encode_compound_hdr(xdr, req, &hdr);
2375 encode_putfh(xdr, args->fh, &hdr);
2376 encode_open_confirm(xdr, args, &hdr);
2377 encode_nops(&hdr);
2378}
2379
2380/*
2381 * Encode an OPEN request with no attributes.
2382 */
2383static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2384 struct xdr_stream *xdr,
2385 const void *data)
2386{
2387 const struct nfs_openargs *args = data;
2388 struct compound_hdr hdr = {
2389 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2390 };
2391
2392 encode_compound_hdr(xdr, req, &hdr);
2393 encode_sequence(xdr, &args->seq_args, &hdr);
2394 encode_putfh(xdr, args->fh, &hdr);
2395 encode_open(xdr, args, &hdr);
2396 if (args->access)
2397 encode_access(xdr, args->access, &hdr);
2398 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2399 if (args->lg_args) {
2400 encode_layoutget(xdr, args->lg_args, &hdr);
2401 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2402 args->lg_args->layout.pglen,
2403 hdr.replen - pagepad_maxsz);
2404 }
2405 encode_nops(&hdr);
2406}
2407
2408/*
2409 * Encode an OPEN_DOWNGRADE request
2410 */
2411static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2412 struct xdr_stream *xdr,
2413 const void *data)
2414{
2415 const struct nfs_closeargs *args = data;
2416 struct compound_hdr hdr = {
2417 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2418 };
2419
2420 encode_compound_hdr(xdr, req, &hdr);
2421 encode_sequence(xdr, &args->seq_args, &hdr);
2422 encode_putfh(xdr, args->fh, &hdr);
2423 if (args->lr_args)
2424 encode_layoutreturn(xdr, args->lr_args, &hdr);
2425 encode_open_downgrade(xdr, args, &hdr);
2426 encode_nops(&hdr);
2427}
2428
2429/*
2430 * Encode a LOCK request
2431 */
2432static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2433 const void *data)
2434{
2435 const struct nfs_lock_args *args = data;
2436 struct compound_hdr hdr = {
2437 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2438 };
2439
2440 encode_compound_hdr(xdr, req, &hdr);
2441 encode_sequence(xdr, &args->seq_args, &hdr);
2442 encode_putfh(xdr, args->fh, &hdr);
2443 encode_lock(xdr, args, &hdr);
2444 encode_nops(&hdr);
2445}
2446
2447/*
2448 * Encode a LOCKT request
2449 */
2450static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2451 const void *data)
2452{
2453 const struct nfs_lockt_args *args = data;
2454 struct compound_hdr hdr = {
2455 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2456 };
2457
2458 encode_compound_hdr(xdr, req, &hdr);
2459 encode_sequence(xdr, &args->seq_args, &hdr);
2460 encode_putfh(xdr, args->fh, &hdr);
2461 encode_lockt(xdr, args, &hdr);
2462 encode_nops(&hdr);
2463}
2464
2465/*
2466 * Encode a LOCKU request
2467 */
2468static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2469 const void *data)
2470{
2471 const struct nfs_locku_args *args = data;
2472 struct compound_hdr hdr = {
2473 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2474 };
2475
2476 encode_compound_hdr(xdr, req, &hdr);
2477 encode_sequence(xdr, &args->seq_args, &hdr);
2478 encode_putfh(xdr, args->fh, &hdr);
2479 encode_locku(xdr, args, &hdr);
2480 encode_nops(&hdr);
2481}
2482
2483static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2484 struct xdr_stream *xdr,
2485 const void *data)
2486{
2487 const struct nfs_release_lockowner_args *args = data;
2488 struct compound_hdr hdr = {
2489 .minorversion = 0,
2490 };
2491
2492 encode_compound_hdr(xdr, req, &hdr);
2493 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2494 encode_nops(&hdr);
2495}
2496
2497/*
2498 * Encode a READLINK request
2499 */
2500static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2501 const void *data)
2502{
2503 const struct nfs4_readlink *args = data;
2504 struct compound_hdr hdr = {
2505 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2506 };
2507
2508 encode_compound_hdr(xdr, req, &hdr);
2509 encode_sequence(xdr, &args->seq_args, &hdr);
2510 encode_putfh(xdr, args->fh, &hdr);
2511 encode_readlink(xdr, args, req, &hdr);
2512
2513 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2514 args->pglen, hdr.replen - pagepad_maxsz);
2515 encode_nops(&hdr);
2516}
2517
2518/*
2519 * Encode a READDIR request
2520 */
2521static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2522 const void *data)
2523{
2524 const struct nfs4_readdir_arg *args = data;
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2527 };
2528
2529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_readdir(xdr, args, req, &hdr);
2533
2534 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2535 args->count, hdr.replen - pagepad_maxsz);
2536 encode_nops(&hdr);
2537}
2538
2539/*
2540 * Encode a READ request
2541 */
2542static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2543 const void *data)
2544{
2545 const struct nfs_pgio_args *args = data;
2546 struct compound_hdr hdr = {
2547 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2548 };
2549
2550 encode_compound_hdr(xdr, req, &hdr);
2551 encode_sequence(xdr, &args->seq_args, &hdr);
2552 encode_putfh(xdr, args->fh, &hdr);
2553 encode_read(xdr, args, &hdr);
2554
2555 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2556 args->count, hdr.replen - pagepad_maxsz);
2557 req->rq_rcv_buf.flags |= XDRBUF_READ;
2558 encode_nops(&hdr);
2559}
2560
2561/*
2562 * Encode an SETATTR request
2563 */
2564static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2565 const void *data)
2566{
2567 const struct nfs_setattrargs *args = data;
2568 struct compound_hdr hdr = {
2569 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2570 };
2571
2572 encode_compound_hdr(xdr, req, &hdr);
2573 encode_sequence(xdr, &args->seq_args, &hdr);
2574 encode_putfh(xdr, args->fh, &hdr);
2575 encode_setattr(xdr, args, args->server, &hdr);
2576 encode_getfattr(xdr, args->bitmask, &hdr);
2577 encode_nops(&hdr);
2578}
2579
2580/*
2581 * Encode a GETACL request
2582 */
2583static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2584 const void *data)
2585{
2586 const struct nfs_getaclargs *args = data;
2587 struct compound_hdr hdr = {
2588 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2589 };
2590 const __u32 nfs4_acl_bitmap[1] = {
2591 [0] = FATTR4_WORD0_ACL,
2592 };
2593 uint32_t replen;
2594
2595 encode_compound_hdr(xdr, req, &hdr);
2596 encode_sequence(xdr, &args->seq_args, &hdr);
2597 encode_putfh(xdr, args->fh, &hdr);
2598 replen = hdr.replen + op_decode_hdr_maxsz;
2599 encode_getattr(xdr, nfs4_acl_bitmap, NULL,
2600 ARRAY_SIZE(nfs4_acl_bitmap), &hdr);
2601
2602 rpc_prepare_reply_pages(req, args->acl_pages, 0,
2603 args->acl_len, replen);
2604 encode_nops(&hdr);
2605}
2606
2607/*
2608 * Encode a WRITE request
2609 */
2610static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2611 const void *data)
2612{
2613 const struct nfs_pgio_args *args = data;
2614 struct compound_hdr hdr = {
2615 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2616 };
2617
2618 encode_compound_hdr(xdr, req, &hdr);
2619 encode_sequence(xdr, &args->seq_args, &hdr);
2620 encode_putfh(xdr, args->fh, &hdr);
2621 encode_write(xdr, args, &hdr);
2622 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2623 if (args->bitmask)
2624 encode_getfattr(xdr, args->bitmask, &hdr);
2625 encode_nops(&hdr);
2626}
2627
2628/*
2629 * a COMMIT request
2630 */
2631static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2632 const void *data)
2633{
2634 const struct nfs_commitargs *args = data;
2635 struct compound_hdr hdr = {
2636 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2637 };
2638
2639 encode_compound_hdr(xdr, req, &hdr);
2640 encode_sequence(xdr, &args->seq_args, &hdr);
2641 encode_putfh(xdr, args->fh, &hdr);
2642 encode_commit(xdr, args, &hdr);
2643 encode_nops(&hdr);
2644}
2645
2646/*
2647 * FSINFO request
2648 */
2649static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2650 const void *data)
2651{
2652 const struct nfs4_fsinfo_arg *args = data;
2653 struct compound_hdr hdr = {
2654 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2655 };
2656
2657 encode_compound_hdr(xdr, req, &hdr);
2658 encode_sequence(xdr, &args->seq_args, &hdr);
2659 encode_putfh(xdr, args->fh, &hdr);
2660 encode_fsinfo(xdr, args->bitmask, &hdr);
2661 encode_nops(&hdr);
2662}
2663
2664/*
2665 * a PATHCONF request
2666 */
2667static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2668 const void *data)
2669{
2670 const struct nfs4_pathconf_arg *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_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask,
2679 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr);
2680 encode_nops(&hdr);
2681}
2682
2683/*
2684 * a STATFS request
2685 */
2686static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2687 const void *data)
2688{
2689 const struct nfs4_statfs_arg *args = data;
2690 struct compound_hdr hdr = {
2691 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2692 };
2693
2694 encode_compound_hdr(xdr, req, &hdr);
2695 encode_sequence(xdr, &args->seq_args, &hdr);
2696 encode_putfh(xdr, args->fh, &hdr);
2697 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask,
2698 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr);
2699 encode_nops(&hdr);
2700}
2701
2702/*
2703 * GETATTR_BITMAP request
2704 */
2705static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2706 struct xdr_stream *xdr,
2707 const void *data)
2708{
2709 const struct nfs4_server_caps_arg *args = data;
2710 const u32 *bitmask = args->bitmask;
2711 struct compound_hdr hdr = {
2712 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2713 };
2714
2715 encode_compound_hdr(xdr, req, &hdr);
2716 encode_sequence(xdr, &args->seq_args, &hdr);
2717 encode_putfh(xdr, args->fhandle, &hdr);
2718 encode_getattr(xdr, bitmask, NULL, 3, &hdr);
2719 encode_nops(&hdr);
2720}
2721
2722/*
2723 * a RENEW request
2724 */
2725static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2726 const void *data)
2727
2728{
2729 const struct nfs_client *clp = data;
2730 struct compound_hdr hdr = {
2731 .nops = 0,
2732 };
2733
2734 encode_compound_hdr(xdr, req, &hdr);
2735 encode_renew(xdr, clp->cl_clientid, &hdr);
2736 encode_nops(&hdr);
2737}
2738
2739/*
2740 * a SETCLIENTID request
2741 */
2742static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2743 struct xdr_stream *xdr,
2744 const void *data)
2745{
2746 const struct nfs4_setclientid *sc = data;
2747 struct compound_hdr hdr = {
2748 .nops = 0,
2749 };
2750
2751 encode_compound_hdr(xdr, req, &hdr);
2752 encode_setclientid(xdr, sc, &hdr);
2753 encode_nops(&hdr);
2754}
2755
2756/*
2757 * a SETCLIENTID_CONFIRM request
2758 */
2759static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2760 struct xdr_stream *xdr,
2761 const void *data)
2762{
2763 const struct nfs4_setclientid_res *arg = data;
2764 struct compound_hdr hdr = {
2765 .nops = 0,
2766 };
2767
2768 encode_compound_hdr(xdr, req, &hdr);
2769 encode_setclientid_confirm(xdr, arg, &hdr);
2770 encode_nops(&hdr);
2771}
2772
2773/*
2774 * DELEGRETURN request
2775 */
2776static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2777 struct xdr_stream *xdr,
2778 const void *data)
2779{
2780 const struct nfs4_delegreturnargs *args = data;
2781 struct compound_hdr hdr = {
2782 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2783 };
2784
2785 encode_compound_hdr(xdr, req, &hdr);
2786 encode_sequence(xdr, &args->seq_args, &hdr);
2787 encode_putfh(xdr, args->fhandle, &hdr);
2788 if (args->lr_args)
2789 encode_layoutreturn(xdr, args->lr_args, &hdr);
2790 if (args->bitmask)
2791 encode_getfattr(xdr, args->bitmask, &hdr);
2792 encode_delegreturn(xdr, args->stateid, &hdr);
2793 encode_nops(&hdr);
2794}
2795
2796/*
2797 * Encode FS_LOCATIONS request
2798 */
2799static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2800 struct xdr_stream *xdr,
2801 const void *data)
2802{
2803 const struct nfs4_fs_locations_arg *args = data;
2804 struct compound_hdr hdr = {
2805 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2806 };
2807 uint32_t replen;
2808
2809 encode_compound_hdr(xdr, req, &hdr);
2810 encode_sequence(xdr, &args->seq_args, &hdr);
2811 if (args->migration) {
2812 encode_putfh(xdr, args->fh, &hdr);
2813 replen = hdr.replen;
2814 encode_fs_locations(xdr, args->bitmask, &hdr);
2815 if (args->renew)
2816 encode_renew(xdr, args->clientid, &hdr);
2817 } else {
2818 encode_putfh(xdr, args->dir_fh, &hdr);
2819 encode_lookup(xdr, args->name, &hdr);
2820 replen = hdr.replen;
2821 encode_fs_locations(xdr, args->bitmask, &hdr);
2822 }
2823
2824 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0,
2825 PAGE_SIZE, replen);
2826 encode_nops(&hdr);
2827}
2828
2829/*
2830 * Encode SECINFO request
2831 */
2832static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2833 struct xdr_stream *xdr,
2834 const void *data)
2835{
2836 const struct nfs4_secinfo_arg *args = data;
2837 struct compound_hdr hdr = {
2838 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2839 };
2840
2841 encode_compound_hdr(xdr, req, &hdr);
2842 encode_sequence(xdr, &args->seq_args, &hdr);
2843 encode_putfh(xdr, args->dir_fh, &hdr);
2844 encode_secinfo(xdr, args->name, &hdr);
2845 encode_nops(&hdr);
2846}
2847
2848/*
2849 * Encode FSID_PRESENT request
2850 */
2851static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2852 struct xdr_stream *xdr,
2853 const void *data)
2854{
2855 const struct nfs4_fsid_present_arg *args = data;
2856 struct compound_hdr hdr = {
2857 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2858 };
2859
2860 encode_compound_hdr(xdr, req, &hdr);
2861 encode_sequence(xdr, &args->seq_args, &hdr);
2862 encode_putfh(xdr, args->fh, &hdr);
2863 encode_getfh(xdr, &hdr);
2864 if (args->renew)
2865 encode_renew(xdr, args->clientid, &hdr);
2866 encode_nops(&hdr);
2867}
2868
2869#if defined(CONFIG_NFS_V4_1)
2870/*
2871 * BIND_CONN_TO_SESSION request
2872 */
2873static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2874 struct xdr_stream *xdr,
2875 const void *data)
2876{
2877 const struct nfs41_bind_conn_to_session_args *args = data;
2878 struct compound_hdr hdr = {
2879 .minorversion = args->client->cl_mvops->minor_version,
2880 };
2881
2882 encode_compound_hdr(xdr, req, &hdr);
2883 encode_bind_conn_to_session(xdr, args, &hdr);
2884 encode_nops(&hdr);
2885}
2886
2887/*
2888 * EXCHANGE_ID request
2889 */
2890static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2891 struct xdr_stream *xdr,
2892 const void *data)
2893{
2894 const struct nfs41_exchange_id_args *args = data;
2895 struct compound_hdr hdr = {
2896 .minorversion = args->client->cl_mvops->minor_version,
2897 };
2898
2899 encode_compound_hdr(xdr, req, &hdr);
2900 encode_exchange_id(xdr, args, &hdr);
2901 encode_nops(&hdr);
2902}
2903
2904/*
2905 * a CREATE_SESSION request
2906 */
2907static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2908 struct xdr_stream *xdr,
2909 const void *data)
2910{
2911 const struct nfs41_create_session_args *args = data;
2912 struct compound_hdr hdr = {
2913 .minorversion = args->client->cl_mvops->minor_version,
2914 };
2915
2916 encode_compound_hdr(xdr, req, &hdr);
2917 encode_create_session(xdr, args, &hdr);
2918 encode_nops(&hdr);
2919}
2920
2921/*
2922 * a DESTROY_SESSION request
2923 */
2924static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2925 struct xdr_stream *xdr,
2926 const void *data)
2927{
2928 const struct nfs4_session *session = data;
2929 struct compound_hdr hdr = {
2930 .minorversion = session->clp->cl_mvops->minor_version,
2931 };
2932
2933 encode_compound_hdr(xdr, req, &hdr);
2934 encode_destroy_session(xdr, session, &hdr);
2935 encode_nops(&hdr);
2936}
2937
2938/*
2939 * a DESTROY_CLIENTID request
2940 */
2941static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2942 struct xdr_stream *xdr,
2943 const void *data)
2944{
2945 const struct nfs_client *clp = data;
2946 struct compound_hdr hdr = {
2947 .minorversion = clp->cl_mvops->minor_version,
2948 };
2949
2950 encode_compound_hdr(xdr, req, &hdr);
2951 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2952 encode_nops(&hdr);
2953}
2954
2955/*
2956 * a SEQUENCE request
2957 */
2958static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2959 const void *data)
2960{
2961 const struct nfs4_sequence_args *args = data;
2962 struct compound_hdr hdr = {
2963 .minorversion = nfs4_xdr_minorversion(args),
2964 };
2965
2966 encode_compound_hdr(xdr, req, &hdr);
2967 encode_sequence(xdr, args, &hdr);
2968 encode_nops(&hdr);
2969}
2970
2971#endif
2972
2973/*
2974 * a GET_LEASE_TIME request
2975 */
2976static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2977 struct xdr_stream *xdr,
2978 const void *data)
2979{
2980 const struct nfs4_get_lease_time_args *args = data;
2981 struct compound_hdr hdr = {
2982 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2983 };
2984 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2985
2986 encode_compound_hdr(xdr, req, &hdr);
2987 encode_sequence(xdr, &args->la_seq_args, &hdr);
2988 encode_putrootfh(xdr, &hdr);
2989 encode_fsinfo(xdr, lease_bitmap, &hdr);
2990 encode_nops(&hdr);
2991}
2992
2993#ifdef CONFIG_NFS_V4_1
2994
2995/*
2996 * a RECLAIM_COMPLETE request
2997 */
2998static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2999 struct xdr_stream *xdr,
3000 const void *data)
3001{
3002 const struct nfs41_reclaim_complete_args *args = data;
3003 struct compound_hdr hdr = {
3004 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
3005 };
3006
3007 encode_compound_hdr(xdr, req, &hdr);
3008 encode_sequence(xdr, &args->seq_args, &hdr);
3009 encode_reclaim_complete(xdr, args, &hdr);
3010 encode_nops(&hdr);
3011}
3012
3013/*
3014 * Encode GETDEVICEINFO request
3015 */
3016static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
3017 struct xdr_stream *xdr,
3018 const void *data)
3019{
3020 const struct nfs4_getdeviceinfo_args *args = data;
3021 struct compound_hdr hdr = {
3022 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3023 };
3024 uint32_t replen;
3025
3026 encode_compound_hdr(xdr, req, &hdr);
3027 encode_sequence(xdr, &args->seq_args, &hdr);
3028
3029 replen = hdr.replen + op_decode_hdr_maxsz + 2;
3030
3031 encode_getdeviceinfo(xdr, args, &hdr);
3032
3033 /* set up reply kvec. device_addr4 opaque data is read into the
3034 * pages */
3035 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase,
3036 args->pdev->pglen, replen);
3037 encode_nops(&hdr);
3038}
3039
3040/*
3041 * Encode LAYOUTGET request
3042 */
3043static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
3044 struct xdr_stream *xdr,
3045 const void *data)
3046{
3047 const struct nfs4_layoutget_args *args = data;
3048 struct compound_hdr hdr = {
3049 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3050 };
3051
3052 encode_compound_hdr(xdr, req, &hdr);
3053 encode_sequence(xdr, &args->seq_args, &hdr);
3054 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3055 encode_layoutget(xdr, args, &hdr);
3056
3057 rpc_prepare_reply_pages(req, args->layout.pages, 0,
3058 args->layout.pglen, hdr.replen - pagepad_maxsz);
3059 encode_nops(&hdr);
3060}
3061
3062/*
3063 * Encode LAYOUTCOMMIT request
3064 */
3065static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
3066 struct xdr_stream *xdr,
3067 const void *priv)
3068{
3069 const struct nfs4_layoutcommit_args *args = priv;
3070 struct nfs4_layoutcommit_data *data =
3071 container_of(args, struct nfs4_layoutcommit_data, args);
3072 struct compound_hdr hdr = {
3073 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3074 };
3075
3076 encode_compound_hdr(xdr, req, &hdr);
3077 encode_sequence(xdr, &args->seq_args, &hdr);
3078 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3079 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
3080 encode_getfattr(xdr, args->bitmask, &hdr);
3081 encode_nops(&hdr);
3082}
3083
3084/*
3085 * Encode LAYOUTRETURN request
3086 */
3087static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
3088 struct xdr_stream *xdr,
3089 const void *data)
3090{
3091 const struct nfs4_layoutreturn_args *args = data;
3092 struct compound_hdr hdr = {
3093 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3094 };
3095
3096 encode_compound_hdr(xdr, req, &hdr);
3097 encode_sequence(xdr, &args->seq_args, &hdr);
3098 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3099 encode_layoutreturn(xdr, args, &hdr);
3100 encode_nops(&hdr);
3101}
3102
3103/*
3104 * Encode SECINFO_NO_NAME request
3105 */
3106static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3107 struct xdr_stream *xdr,
3108 const void *data)
3109{
3110 const struct nfs41_secinfo_no_name_args *args = data;
3111 struct compound_hdr hdr = {
3112 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3113 };
3114
3115 encode_compound_hdr(xdr, req, &hdr);
3116 encode_sequence(xdr, &args->seq_args, &hdr);
3117 encode_putrootfh(xdr, &hdr);
3118 encode_secinfo_no_name(xdr, args, &hdr);
3119 encode_nops(&hdr);
3120}
3121
3122/*
3123 * Encode TEST_STATEID request
3124 */
3125static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3126 struct xdr_stream *xdr,
3127 const void *data)
3128{
3129 const struct nfs41_test_stateid_args *args = data;
3130 struct compound_hdr hdr = {
3131 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3132 };
3133
3134 encode_compound_hdr(xdr, req, &hdr);
3135 encode_sequence(xdr, &args->seq_args, &hdr);
3136 encode_test_stateid(xdr, args, &hdr);
3137 encode_nops(&hdr);
3138}
3139
3140/*
3141 * Encode FREE_STATEID request
3142 */
3143static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3144 struct xdr_stream *xdr,
3145 const void *data)
3146{
3147 const struct nfs41_free_stateid_args *args = data;
3148 struct compound_hdr hdr = {
3149 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3150 };
3151
3152 encode_compound_hdr(xdr, req, &hdr);
3153 encode_sequence(xdr, &args->seq_args, &hdr);
3154 encode_free_stateid(xdr, args, &hdr);
3155 encode_nops(&hdr);
3156}
3157#endif /* CONFIG_NFS_V4_1 */
3158
3159static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3160{
3161 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string,
3162 NFS4_OPAQUE_LIMIT);
3163 if (unlikely(ret < 0))
3164 return -EIO;
3165 *len = ret;
3166 return 0;
3167}
3168
3169static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3170{
3171 __be32 *p;
3172
3173 p = xdr_inline_decode(xdr, 8);
3174 if (unlikely(!p))
3175 return -EIO;
3176 hdr->status = be32_to_cpup(p++);
3177 hdr->taglen = be32_to_cpup(p);
3178
3179 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3180 if (unlikely(!p))
3181 return -EIO;
3182 hdr->tag = (char *)p;
3183 p += XDR_QUADLEN(hdr->taglen);
3184 hdr->nops = be32_to_cpup(p);
3185 if (unlikely(hdr->nops < 1))
3186 return nfs4_stat_to_errno(hdr->status);
3187 return 0;
3188}
3189
3190static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3191 int *nfs_retval)
3192{
3193 __be32 *p;
3194 uint32_t opnum;
3195 int32_t nfserr;
3196
3197 p = xdr_inline_decode(xdr, 8);
3198 if (unlikely(!p))
3199 goto out_overflow;
3200 opnum = be32_to_cpup(p++);
3201 if (unlikely(opnum != expected))
3202 goto out_bad_operation;
3203 if (unlikely(*p != cpu_to_be32(NFS_OK)))
3204 goto out_status;
3205 *nfs_retval = 0;
3206 return true;
3207out_status:
3208 nfserr = be32_to_cpup(p);
3209 trace_nfs4_xdr_status(xdr, opnum, nfserr);
3210 *nfs_retval = nfs4_stat_to_errno(nfserr);
3211 return true;
3212out_bad_operation:
3213 trace_nfs4_xdr_bad_operation(xdr, opnum, expected);
3214 *nfs_retval = -EREMOTEIO;
3215 return false;
3216out_overflow:
3217 *nfs_retval = -EIO;
3218 return false;
3219}
3220
3221static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3222{
3223 int retval;
3224
3225 __decode_op_hdr(xdr, expected, &retval);
3226 return retval;
3227}
3228
3229/* Dummy routine */
3230static int decode_ace(struct xdr_stream *xdr, void *ace)
3231{
3232 __be32 *p;
3233 unsigned int strlen;
3234 char *str;
3235
3236 p = xdr_inline_decode(xdr, 12);
3237 if (unlikely(!p))
3238 return -EIO;
3239 return decode_opaque_inline(xdr, &strlen, &str);
3240}
3241
3242static ssize_t
3243decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz)
3244{
3245 ssize_t ret;
3246
3247 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz);
3248 if (likely(ret >= 0))
3249 return ret;
3250 if (ret != -EMSGSIZE)
3251 return -EIO;
3252 return sz;
3253}
3254
3255static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3256{
3257 ssize_t ret;
3258 ret = decode_bitmap4(xdr, bitmap, 3);
3259 return ret < 0 ? ret : 0;
3260}
3261
3262static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3263{
3264 __be32 *p;
3265
3266 p = xdr_inline_decode(xdr, 4);
3267 if (unlikely(!p))
3268 return -EIO;
3269 *attrlen = be32_to_cpup(p);
3270 *savep = xdr_stream_pos(xdr);
3271 return 0;
3272}
3273
3274static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3275{
3276 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3277 int ret;
3278 ret = decode_attr_bitmap(xdr, bitmask);
3279 if (unlikely(ret < 0))
3280 return ret;
3281 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3282 } else
3283 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3284 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3285 bitmask[0], bitmask[1], bitmask[2]);
3286 return 0;
3287}
3288
3289static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3290{
3291 __be32 *p;
3292 int ret = 0;
3293
3294 *type = 0;
3295 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3296 return -EIO;
3297 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3298 p = xdr_inline_decode(xdr, 4);
3299 if (unlikely(!p))
3300 return -EIO;
3301 *type = be32_to_cpup(p);
3302 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3303 dprintk("%s: bad type %d\n", __func__, *type);
3304 return -EIO;
3305 }
3306 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3307 ret = NFS_ATTR_FATTR_TYPE;
3308 }
3309 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3310 return ret;
3311}
3312
3313static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3314 uint32_t *bitmap, uint32_t *type)
3315{
3316 __be32 *p;
3317
3318 *type = 0;
3319 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3320 return -EIO;
3321 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3322 p = xdr_inline_decode(xdr, 4);
3323 if (unlikely(!p))
3324 return -EIO;
3325 *type = be32_to_cpup(p);
3326 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3327 }
3328 dprintk("%s: expire type=0x%x\n", __func__, *type);
3329 return 0;
3330}
3331
3332static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3333{
3334 __be32 *p;
3335 int ret = 0;
3336
3337 *change = 0;
3338 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3339 return -EIO;
3340 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3341 p = xdr_inline_decode(xdr, 8);
3342 if (unlikely(!p))
3343 return -EIO;
3344 xdr_decode_hyper(p, change);
3345 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3346 ret = NFS_ATTR_FATTR_CHANGE;
3347 }
3348 dprintk("%s: change attribute=%Lu\n", __func__,
3349 (unsigned long long)*change);
3350 return ret;
3351}
3352
3353static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3354{
3355 __be32 *p;
3356 int ret = 0;
3357
3358 *size = 0;
3359 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3360 return -EIO;
3361 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3362 p = xdr_inline_decode(xdr, 8);
3363 if (unlikely(!p))
3364 return -EIO;
3365 xdr_decode_hyper(p, size);
3366 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3367 ret = NFS_ATTR_FATTR_SIZE;
3368 }
3369 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3370 return ret;
3371}
3372
3373static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3374{
3375 __be32 *p;
3376
3377 *res = 0;
3378 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3379 return -EIO;
3380 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3381 p = xdr_inline_decode(xdr, 4);
3382 if (unlikely(!p))
3383 return -EIO;
3384 *res = be32_to_cpup(p);
3385 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3386 }
3387 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3388 return 0;
3389}
3390
3391static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3392{
3393 __be32 *p;
3394
3395 *res = 0;
3396 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3397 return -EIO;
3398 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3399 p = xdr_inline_decode(xdr, 4);
3400 if (unlikely(!p))
3401 return -EIO;
3402 *res = be32_to_cpup(p);
3403 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3404 }
3405 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3406 return 0;
3407}
3408
3409static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3410{
3411 __be32 *p;
3412 int ret = 0;
3413
3414 fsid->major = 0;
3415 fsid->minor = 0;
3416 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3417 return -EIO;
3418 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3419 p = xdr_inline_decode(xdr, 16);
3420 if (unlikely(!p))
3421 return -EIO;
3422 p = xdr_decode_hyper(p, &fsid->major);
3423 xdr_decode_hyper(p, &fsid->minor);
3424 bitmap[0] &= ~FATTR4_WORD0_FSID;
3425 ret = NFS_ATTR_FATTR_FSID;
3426 }
3427 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3428 (unsigned long long)fsid->major,
3429 (unsigned long long)fsid->minor);
3430 return ret;
3431}
3432
3433static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3434{
3435 __be32 *p;
3436
3437 *res = 60;
3438 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3439 return -EIO;
3440 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3441 p = xdr_inline_decode(xdr, 4);
3442 if (unlikely(!p))
3443 return -EIO;
3444 *res = be32_to_cpup(p);
3445 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3446 }
3447 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res);
3448 return 0;
3449}
3450
3451static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3452{
3453 __be32 *p;
3454
3455 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3456 return -EIO;
3457 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3458 p = xdr_inline_decode(xdr, 4);
3459 if (unlikely(!p))
3460 return -EIO;
3461 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3462 *res = -be32_to_cpup(p);
3463 }
3464 return 0;
3465}
3466
3467static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3468 uint32_t *bitmap, uint32_t *bitmask)
3469{
3470 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3471 int ret;
3472 ret = decode_attr_bitmap(xdr, bitmask);
3473 if (unlikely(ret < 0))
3474 return ret;
3475 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3476 } else
3477 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3478 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3479 bitmask[0], bitmask[1], bitmask[2]);
3480 return 0;
3481}
3482
3483static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3484{
3485 __be32 *p;
3486 u32 len;
3487
3488 if (fh != NULL)
3489 memset(fh, 0, sizeof(*fh));
3490
3491 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3492 return -EIO;
3493 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3494 p = xdr_inline_decode(xdr, 4);
3495 if (unlikely(!p))
3496 return -EIO;
3497 len = be32_to_cpup(p);
3498 if (len > NFS4_FHSIZE || len == 0) {
3499 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR,
3500 NFS4ERR_BADHANDLE);
3501 return -EREMOTEIO;
3502 }
3503 p = xdr_inline_decode(xdr, len);
3504 if (unlikely(!p))
3505 return -EIO;
3506 if (fh != NULL) {
3507 memcpy(fh->data, p, len);
3508 fh->size = len;
3509 }
3510 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3511 }
3512 return 0;
3513}
3514
3515static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3516{
3517 __be32 *p;
3518
3519 *res = 0;
3520 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3521 return -EIO;
3522 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3523 p = xdr_inline_decode(xdr, 4);
3524 if (unlikely(!p))
3525 return -EIO;
3526 *res = be32_to_cpup(p);
3527 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3528 }
3529 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3530 return 0;
3531}
3532
3533static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3534{
3535 __be32 *p;
3536 int ret = 0;
3537
3538 *fileid = 0;
3539 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3540 return -EIO;
3541 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3542 p = xdr_inline_decode(xdr, 8);
3543 if (unlikely(!p))
3544 return -EIO;
3545 xdr_decode_hyper(p, fileid);
3546 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3547 ret = NFS_ATTR_FATTR_FILEID;
3548 }
3549 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3550 return ret;
3551}
3552
3553static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3554{
3555 __be32 *p;
3556 int ret = 0;
3557
3558 *fileid = 0;
3559 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3560 return -EIO;
3561 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3562 p = xdr_inline_decode(xdr, 8);
3563 if (unlikely(!p))
3564 return -EIO;
3565 xdr_decode_hyper(p, fileid);
3566 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3567 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3568 }
3569 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3570 return ret;
3571}
3572
3573static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3574{
3575 __be32 *p;
3576 int status = 0;
3577
3578 *res = 0;
3579 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3580 return -EIO;
3581 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3582 p = xdr_inline_decode(xdr, 8);
3583 if (unlikely(!p))
3584 return -EIO;
3585 xdr_decode_hyper(p, res);
3586 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3587 }
3588 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3589 return status;
3590}
3591
3592static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3593{
3594 __be32 *p;
3595 int status = 0;
3596
3597 *res = 0;
3598 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3599 return -EIO;
3600 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3601 p = xdr_inline_decode(xdr, 8);
3602 if (unlikely(!p))
3603 return -EIO;
3604 xdr_decode_hyper(p, res);
3605 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3606 }
3607 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3608 return status;
3609}
3610
3611static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3612{
3613 __be32 *p;
3614 int status = 0;
3615
3616 *res = 0;
3617 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3618 return -EIO;
3619 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3620 p = xdr_inline_decode(xdr, 8);
3621 if (unlikely(!p))
3622 return -EIO;
3623 xdr_decode_hyper(p, res);
3624 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3625 }
3626 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3627 return status;
3628}
3629
3630static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3631{
3632 u32 n;
3633 __be32 *p;
3634 int status = 0;
3635
3636 p = xdr_inline_decode(xdr, 4);
3637 if (unlikely(!p))
3638 return -EIO;
3639 n = be32_to_cpup(p);
3640 if (n == 0)
3641 goto root_path;
3642 dprintk("pathname4: ");
3643 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3644 dprintk("cannot parse %d components in path\n", n);
3645 goto out_eio;
3646 }
3647 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3648 struct nfs4_string *component = &path->components[path->ncomponents];
3649 status = decode_opaque_inline(xdr, &component->len, &component->data);
3650 if (unlikely(status != 0))
3651 goto out_eio;
3652 ifdebug (XDR)
3653 pr_cont("%s%.*s ",
3654 (path->ncomponents != n ? "/ " : ""),
3655 component->len, component->data);
3656 }
3657out:
3658 return status;
3659root_path:
3660/* a root pathname is sent as a zero component4 */
3661 path->ncomponents = 1;
3662 path->components[0].len=0;
3663 path->components[0].data=NULL;
3664 dprintk("pathname4: /\n");
3665 goto out;
3666out_eio:
3667 dprintk(" status %d", status);
3668 status = -EIO;
3669 goto out;
3670}
3671
3672static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3673{
3674 int n;
3675 __be32 *p;
3676 int status = -EIO;
3677
3678 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3679 goto out;
3680 status = 0;
3681 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3682 goto out;
3683 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3684 status = -EIO;
3685 /* Ignore borken servers that return unrequested attrs */
3686 if (unlikely(res == NULL))
3687 goto out;
3688 dprintk("%s: fsroot:\n", __func__);
3689 status = decode_pathname(xdr, &res->fs_path);
3690 if (unlikely(status != 0))
3691 goto out;
3692 p = xdr_inline_decode(xdr, 4);
3693 if (unlikely(!p))
3694 goto out_eio;
3695 n = be32_to_cpup(p);
3696 if (n <= 0)
3697 goto out_eio;
3698 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3699 u32 m;
3700 struct nfs4_fs_location *loc;
3701
3702 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3703 break;
3704 loc = &res->locations[res->nlocations];
3705 p = xdr_inline_decode(xdr, 4);
3706 if (unlikely(!p))
3707 goto out_eio;
3708 m = be32_to_cpup(p);
3709
3710 dprintk("%s: servers:\n", __func__);
3711 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3712 struct nfs4_string *server;
3713
3714 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3715 unsigned int i;
3716 dprintk("%s: using first %u of %u servers "
3717 "returned for location %u\n",
3718 __func__,
3719 NFS4_FS_LOCATION_MAXSERVERS,
3720 m, res->nlocations);
3721 for (i = loc->nservers; i < m; i++) {
3722 unsigned int len;
3723 char *data;
3724 status = decode_opaque_inline(xdr, &len, &data);
3725 if (unlikely(status != 0))
3726 goto out_eio;
3727 }
3728 break;
3729 }
3730 server = &loc->servers[loc->nservers];
3731 status = decode_opaque_inline(xdr, &server->len, &server->data);
3732 if (unlikely(status != 0))
3733 goto out_eio;
3734 dprintk("%s ", server->data);
3735 }
3736 status = decode_pathname(xdr, &loc->rootpath);
3737 if (unlikely(status != 0))
3738 goto out_eio;
3739 }
3740 if (res->nlocations != 0)
3741 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3742out:
3743 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3744 return status;
3745out_eio:
3746 status = -EIO;
3747 goto out;
3748}
3749
3750static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3751{
3752 __be32 *p;
3753 int status = 0;
3754
3755 *res = 0;
3756 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3757 return -EIO;
3758 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3759 p = xdr_inline_decode(xdr, 8);
3760 if (unlikely(!p))
3761 return -EIO;
3762 xdr_decode_hyper(p, res);
3763 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3764 }
3765 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3766 return status;
3767}
3768
3769static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3770{
3771 __be32 *p;
3772 int status = 0;
3773
3774 *maxlink = 1;
3775 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3776 return -EIO;
3777 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3778 p = xdr_inline_decode(xdr, 4);
3779 if (unlikely(!p))
3780 return -EIO;
3781 *maxlink = be32_to_cpup(p);
3782 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3783 }
3784 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3785 return status;
3786}
3787
3788static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3789{
3790 __be32 *p;
3791 int status = 0;
3792
3793 *maxname = 1024;
3794 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3795 return -EIO;
3796 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3797 p = xdr_inline_decode(xdr, 4);
3798 if (unlikely(!p))
3799 return -EIO;
3800 *maxname = be32_to_cpup(p);
3801 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3802 }
3803 dprintk("%s: maxname=%u\n", __func__, *maxname);
3804 return status;
3805}
3806
3807static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3808{
3809 __be32 *p;
3810 int status = 0;
3811
3812 *res = 1024;
3813 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3814 return -EIO;
3815 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3816 uint64_t maxread;
3817 p = xdr_inline_decode(xdr, 8);
3818 if (unlikely(!p))
3819 return -EIO;
3820 xdr_decode_hyper(p, &maxread);
3821 if (maxread > 0x7FFFFFFF)
3822 maxread = 0x7FFFFFFF;
3823 *res = (uint32_t)maxread;
3824 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3825 }
3826 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3827 return status;
3828}
3829
3830static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3831{
3832 __be32 *p;
3833 int status = 0;
3834
3835 *res = 1024;
3836 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3837 return -EIO;
3838 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3839 uint64_t maxwrite;
3840 p = xdr_inline_decode(xdr, 8);
3841 if (unlikely(!p))
3842 return -EIO;
3843 xdr_decode_hyper(p, &maxwrite);
3844 if (maxwrite > 0x7FFFFFFF)
3845 maxwrite = 0x7FFFFFFF;
3846 *res = (uint32_t)maxwrite;
3847 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3848 }
3849 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3850 return status;
3851}
3852
3853static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3854{
3855 uint32_t tmp;
3856 __be32 *p;
3857 int ret = 0;
3858
3859 *mode = 0;
3860 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3861 return -EIO;
3862 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3863 p = xdr_inline_decode(xdr, 4);
3864 if (unlikely(!p))
3865 return -EIO;
3866 tmp = be32_to_cpup(p);
3867 *mode = tmp & ~S_IFMT;
3868 bitmap[1] &= ~FATTR4_WORD1_MODE;
3869 ret = NFS_ATTR_FATTR_MODE;
3870 }
3871 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3872 return ret;
3873}
3874
3875static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3876{
3877 __be32 *p;
3878 int ret = 0;
3879
3880 *nlink = 1;
3881 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3882 return -EIO;
3883 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3884 p = xdr_inline_decode(xdr, 4);
3885 if (unlikely(!p))
3886 return -EIO;
3887 *nlink = be32_to_cpup(p);
3888 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3889 ret = NFS_ATTR_FATTR_NLINK;
3890 }
3891 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3892 return ret;
3893}
3894
3895static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3896 struct nfs4_string *name, gfp_t gfp_flags)
3897{
3898 ssize_t ret;
3899
3900 ret = xdr_stream_decode_string_dup(xdr, &name->data,
3901 XDR_MAX_NETOBJ, gfp_flags);
3902 name->len = 0;
3903 if (ret > 0)
3904 name->len = ret;
3905 return ret;
3906}
3907
3908static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3909 const struct nfs_server *server, kuid_t *uid,
3910 struct nfs4_string *owner_name)
3911{
3912 ssize_t len;
3913 char *p;
3914
3915 *uid = make_kuid(&init_user_ns, -2);
3916 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3917 return -EIO;
3918 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
3919 return 0;
3920 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3921
3922 if (owner_name != NULL) {
3923 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO);
3924 if (len <= 0)
3925 goto out;
3926 dprintk("%s: name=%s\n", __func__, owner_name->data);
3927 return NFS_ATTR_FATTR_OWNER_NAME;
3928 } else {
3929 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3930 XDR_MAX_NETOBJ);
3931 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
3932 goto out;
3933 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3934 return NFS_ATTR_FATTR_OWNER;
3935 }
3936out:
3937 if (len == -EBADMSG)
3938 return -EIO;
3939 return 0;
3940}
3941
3942static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3943 const struct nfs_server *server, kgid_t *gid,
3944 struct nfs4_string *group_name)
3945{
3946 ssize_t len;
3947 char *p;
3948
3949 *gid = make_kgid(&init_user_ns, -2);
3950 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3951 return -EIO;
3952 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
3953 return 0;
3954 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3955
3956 if (group_name != NULL) {
3957 len = decode_nfs4_string(xdr, group_name, GFP_NOIO);
3958 if (len <= 0)
3959 goto out;
3960 dprintk("%s: name=%s\n", __func__, group_name->data);
3961 return NFS_ATTR_FATTR_GROUP_NAME;
3962 } else {
3963 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3964 XDR_MAX_NETOBJ);
3965 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
3966 goto out;
3967 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3968 return NFS_ATTR_FATTR_GROUP;
3969 }
3970out:
3971 if (len == -EBADMSG)
3972 return -EIO;
3973 return 0;
3974}
3975
3976static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3977{
3978 uint32_t major = 0, minor = 0;
3979 __be32 *p;
3980 int ret = 0;
3981
3982 *rdev = MKDEV(0,0);
3983 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3984 return -EIO;
3985 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3986 dev_t tmp;
3987
3988 p = xdr_inline_decode(xdr, 8);
3989 if (unlikely(!p))
3990 return -EIO;
3991 major = be32_to_cpup(p++);
3992 minor = be32_to_cpup(p);
3993 tmp = MKDEV(major, minor);
3994 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3995 *rdev = tmp;
3996 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3997 ret = NFS_ATTR_FATTR_RDEV;
3998 }
3999 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4000 return ret;
4001}
4002
4003static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4004{
4005 __be32 *p;
4006 int status = 0;
4007
4008 *res = 0;
4009 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4010 return -EIO;
4011 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4012 p = xdr_inline_decode(xdr, 8);
4013 if (unlikely(!p))
4014 return -EIO;
4015 xdr_decode_hyper(p, res);
4016 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4017 }
4018 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4019 return status;
4020}
4021
4022static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4023{
4024 __be32 *p;
4025 int status = 0;
4026
4027 *res = 0;
4028 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4029 return -EIO;
4030 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4031 p = xdr_inline_decode(xdr, 8);
4032 if (unlikely(!p))
4033 return -EIO;
4034 xdr_decode_hyper(p, res);
4035 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4036 }
4037 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4038 return status;
4039}
4040
4041static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4042{
4043 __be32 *p;
4044 int status = 0;
4045
4046 *res = 0;
4047 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4048 return -EIO;
4049 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4050 p = xdr_inline_decode(xdr, 8);
4051 if (unlikely(!p))
4052 return -EIO;
4053 xdr_decode_hyper(p, res);
4054 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4055 }
4056 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4057 return status;
4058}
4059
4060static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4061{
4062 __be32 *p;
4063 int ret = 0;
4064
4065 *used = 0;
4066 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4067 return -EIO;
4068 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4069 p = xdr_inline_decode(xdr, 8);
4070 if (unlikely(!p))
4071 return -EIO;
4072 xdr_decode_hyper(p, used);
4073 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4074 ret = NFS_ATTR_FATTR_SPACE_USED;
4075 }
4076 dprintk("%s: space used=%Lu\n", __func__,
4077 (unsigned long long)*used);
4078 return ret;
4079}
4080
4081static __be32 *
4082xdr_decode_nfstime4(__be32 *p, struct timespec64 *t)
4083{
4084 __u64 sec;
4085
4086 p = xdr_decode_hyper(p, &sec);
4087 t-> tv_sec = sec;
4088 t->tv_nsec = be32_to_cpup(p++);
4089 return p;
4090}
4091
4092static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time)
4093{
4094 __be32 *p;
4095
4096 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2);
4097 if (unlikely(!p))
4098 return -EIO;
4099 xdr_decode_nfstime4(p, time);
4100 return 0;
4101}
4102
4103static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4104{
4105 int status = 0;
4106
4107 time->tv_sec = 0;
4108 time->tv_nsec = 0;
4109 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4110 return -EIO;
4111 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4112 status = decode_attr_time(xdr, time);
4113 if (status == 0)
4114 status = NFS_ATTR_FATTR_ATIME;
4115 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4116 }
4117 dprintk("%s: atime=%lld\n", __func__, time->tv_sec);
4118 return status;
4119}
4120
4121static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4122{
4123 int status = 0;
4124
4125 time->tv_sec = 0;
4126 time->tv_nsec = 0;
4127 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4128 return -EIO;
4129 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4130 status = decode_attr_time(xdr, time);
4131 if (status == 0)
4132 status = NFS_ATTR_FATTR_CTIME;
4133 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4134 }
4135 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec);
4136 return status;
4137}
4138
4139static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4140 struct timespec64 *time)
4141{
4142 int status = 0;
4143
4144 time->tv_sec = 0;
4145 time->tv_nsec = 0;
4146 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4147 return -EIO;
4148 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4149 status = decode_attr_time(xdr, time);
4150 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4151 }
4152 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec,
4153 time->tv_nsec);
4154 return status;
4155}
4156
4157static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4158 struct nfs4_label *label)
4159{
4160 uint32_t pi = 0;
4161 uint32_t lfs = 0;
4162 __u32 len;
4163 __be32 *p;
4164 int status = 0;
4165
4166 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4167 return -EIO;
4168 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4169 p = xdr_inline_decode(xdr, 4);
4170 if (unlikely(!p))
4171 return -EIO;
4172 lfs = be32_to_cpup(p++);
4173 p = xdr_inline_decode(xdr, 4);
4174 if (unlikely(!p))
4175 return -EIO;
4176 pi = be32_to_cpup(p++);
4177 p = xdr_inline_decode(xdr, 4);
4178 if (unlikely(!p))
4179 return -EIO;
4180 len = be32_to_cpup(p++);
4181 p = xdr_inline_decode(xdr, len);
4182 if (unlikely(!p))
4183 return -EIO;
4184 if (len < NFS4_MAXLABELLEN) {
4185 if (label) {
4186 if (label->len) {
4187 if (label->len < len)
4188 return -ERANGE;
4189 memcpy(label->label, p, len);
4190 }
4191 label->len = len;
4192 label->pi = pi;
4193 label->lfs = lfs;
4194 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4195 }
4196 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4197 } else
4198 printk(KERN_WARNING "%s: label too long (%u)!\n",
4199 __func__, len);
4200 }
4201 if (label && label->label)
4202 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4203 (char *)label->label, label->len, label->pi, label->lfs);
4204 return status;
4205}
4206
4207static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4208{
4209 int status = 0;
4210
4211 time->tv_sec = 0;
4212 time->tv_nsec = 0;
4213 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4214 return -EIO;
4215 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4216 status = decode_attr_time(xdr, time);
4217 if (status == 0)
4218 status = NFS_ATTR_FATTR_MTIME;
4219 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4220 }
4221 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec);
4222 return status;
4223}
4224
4225static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
4226 uint32_t *res)
4227{
4228 __be32 *p;
4229
4230 *res = 0;
4231 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U)))
4232 return -EIO;
4233 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) {
4234 p = xdr_inline_decode(xdr, 4);
4235 if (unlikely(!p))
4236 return -EIO;
4237 *res = be32_to_cpup(p);
4238 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
4239 }
4240 dprintk("%s: XATTR support=%s\n", __func__,
4241 *res == 0 ? "false" : "true");
4242 return 0;
4243}
4244
4245static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4246{
4247 unsigned int attrwords = XDR_QUADLEN(attrlen);
4248 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4249
4250 if (unlikely(attrwords != nwords)) {
4251 dprintk("%s: server returned incorrect attribute length: "
4252 "%u %c %u\n",
4253 __func__,
4254 attrwords << 2,
4255 (attrwords < nwords) ? '<' : '>',
4256 nwords << 2);
4257 return -EIO;
4258 }
4259 return 0;
4260}
4261
4262static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4263{
4264 __be32 *p;
4265
4266 p = xdr_inline_decode(xdr, 20);
4267 if (unlikely(!p))
4268 return -EIO;
4269 cinfo->atomic = be32_to_cpup(p++);
4270 p = xdr_decode_hyper(p, &cinfo->before);
4271 xdr_decode_hyper(p, &cinfo->after);
4272 return 0;
4273}
4274
4275static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4276{
4277 __be32 *p;
4278 uint32_t supp, acc;
4279 int status;
4280
4281 status = decode_op_hdr(xdr, OP_ACCESS);
4282 if (status)
4283 return status;
4284 p = xdr_inline_decode(xdr, 8);
4285 if (unlikely(!p))
4286 return -EIO;
4287 supp = be32_to_cpup(p++);
4288 acc = be32_to_cpup(p);
4289 *supported = supp;
4290 *access = acc;
4291 return 0;
4292}
4293
4294static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4295{
4296 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
4297 if (unlikely(ret < 0))
4298 return -EIO;
4299 return 0;
4300}
4301
4302static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4303{
4304 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4305}
4306
4307static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4308{
4309 stateid->type = NFS4_OPEN_STATEID_TYPE;
4310 return decode_stateid(xdr, stateid);
4311}
4312
4313static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4314{
4315 stateid->type = NFS4_LOCK_STATEID_TYPE;
4316 return decode_stateid(xdr, stateid);
4317}
4318
4319static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4320{
4321 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4322 return decode_stateid(xdr, stateid);
4323}
4324
4325static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4326{
4327 nfs4_stateid dummy;
4328
4329 nfs4_stateid_copy(stateid, &invalid_stateid);
4330 return decode_stateid(xdr, &dummy);
4331}
4332
4333static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4334{
4335 int status;
4336
4337 status = decode_op_hdr(xdr, OP_CLOSE);
4338 if (status != -EIO)
4339 nfs_increment_open_seqid(status, res->seqid);
4340 if (!status)
4341 status = decode_invalid_stateid(xdr, &res->stateid);
4342 return status;
4343}
4344
4345static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4346{
4347 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4348}
4349
4350static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4351{
4352 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4353}
4354
4355static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4356{
4357 struct nfs_writeverf *verf = res->verf;
4358 int status;
4359
4360 status = decode_op_hdr(xdr, OP_COMMIT);
4361 if (!status)
4362 status = decode_write_verifier(xdr, &verf->verifier);
4363 if (!status)
4364 verf->committed = NFS_FILE_SYNC;
4365 return status;
4366}
4367
4368static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4369{
4370 __be32 *p;
4371 uint32_t bmlen;
4372 int status;
4373
4374 status = decode_op_hdr(xdr, OP_CREATE);
4375 if (status)
4376 return status;
4377 if ((status = decode_change_info(xdr, cinfo)))
4378 return status;
4379 p = xdr_inline_decode(xdr, 4);
4380 if (unlikely(!p))
4381 return -EIO;
4382 bmlen = be32_to_cpup(p);
4383 p = xdr_inline_decode(xdr, bmlen << 2);
4384 if (likely(p))
4385 return 0;
4386 return -EIO;
4387}
4388
4389static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4390{
4391 unsigned int savep;
4392 uint32_t attrlen, bitmap[3] = {0};
4393 int status;
4394
4395 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4396 goto xdr_error;
4397 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4398 goto xdr_error;
4399 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4400 goto xdr_error;
4401 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4402 goto xdr_error;
4403 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4404 &res->fh_expire_type)) != 0)
4405 goto xdr_error;
4406 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4407 goto xdr_error;
4408 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4409 goto xdr_error;
4410 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4411 goto xdr_error;
4412 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4413 res->exclcreat_bitmask)) != 0)
4414 goto xdr_error;
4415 status = verify_attr_len(xdr, savep, attrlen);
4416xdr_error:
4417 dprintk("%s: xdr returned %d!\n", __func__, -status);
4418 return status;
4419}
4420
4421static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4422{
4423 unsigned int savep;
4424 uint32_t attrlen, bitmap[3] = {0};
4425 int status;
4426
4427 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4428 goto xdr_error;
4429 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4430 goto xdr_error;
4431 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4432 goto xdr_error;
4433
4434 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4435 goto xdr_error;
4436 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4437 goto xdr_error;
4438 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4439 goto xdr_error;
4440
4441 status = -EIO;
4442 if (unlikely(bitmap[0]))
4443 goto xdr_error;
4444
4445 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4446 goto xdr_error;
4447 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4448 goto xdr_error;
4449 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4450 goto xdr_error;
4451
4452 status = verify_attr_len(xdr, savep, attrlen);
4453xdr_error:
4454 dprintk("%s: xdr returned %d!\n", __func__, -status);
4455 return status;
4456}
4457
4458static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4459{
4460 unsigned int savep;
4461 uint32_t attrlen, bitmap[3] = {0};
4462 int status;
4463
4464 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4465 goto xdr_error;
4466 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4467 goto xdr_error;
4468 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4469 goto xdr_error;
4470
4471 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4472 goto xdr_error;
4473 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4474 goto xdr_error;
4475
4476 status = verify_attr_len(xdr, savep, attrlen);
4477xdr_error:
4478 dprintk("%s: xdr returned %d!\n", __func__, -status);
4479 return status;
4480}
4481
4482static int decode_threshold_hint(struct xdr_stream *xdr,
4483 uint32_t *bitmap,
4484 uint64_t *res,
4485 uint32_t hint_bit)
4486{
4487 __be32 *p;
4488
4489 *res = 0;
4490 if (likely(bitmap[0] & hint_bit)) {
4491 p = xdr_inline_decode(xdr, 8);
4492 if (unlikely(!p))
4493 return -EIO;
4494 xdr_decode_hyper(p, res);
4495 }
4496 return 0;
4497}
4498
4499static int decode_first_threshold_item4(struct xdr_stream *xdr,
4500 struct nfs4_threshold *res)
4501{
4502 __be32 *p;
4503 unsigned int savep;
4504 uint32_t bitmap[3] = {0,}, attrlen;
4505 int status;
4506
4507 /* layout type */
4508 p = xdr_inline_decode(xdr, 4);
4509 if (unlikely(!p))
4510 return -EIO;
4511 res->l_type = be32_to_cpup(p);
4512
4513 /* thi_hintset bitmap */
4514 status = decode_attr_bitmap(xdr, bitmap);
4515 if (status < 0)
4516 goto xdr_error;
4517
4518 /* thi_hintlist length */
4519 status = decode_attr_length(xdr, &attrlen, &savep);
4520 if (status < 0)
4521 goto xdr_error;
4522 /* thi_hintlist */
4523 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4524 if (status < 0)
4525 goto xdr_error;
4526 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4527 if (status < 0)
4528 goto xdr_error;
4529 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4530 THRESHOLD_RD_IO);
4531 if (status < 0)
4532 goto xdr_error;
4533 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4534 THRESHOLD_WR_IO);
4535 if (status < 0)
4536 goto xdr_error;
4537
4538 status = verify_attr_len(xdr, savep, attrlen);
4539 res->bm = bitmap[0];
4540
4541 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4542 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4543 res->wr_io_sz);
4544xdr_error:
4545 dprintk("%s ret=%d!\n", __func__, status);
4546 return status;
4547}
4548
4549/*
4550 * Thresholds on pNFS direct I/O vrs MDS I/O
4551 */
4552static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4553 uint32_t *bitmap,
4554 struct nfs4_threshold *res)
4555{
4556 __be32 *p;
4557 int status = 0;
4558 uint32_t num;
4559
4560 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4561 return -EIO;
4562 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4563 /* Did the server return an unrequested attribute? */
4564 if (unlikely(res == NULL))
4565 return -EREMOTEIO;
4566 p = xdr_inline_decode(xdr, 4);
4567 if (unlikely(!p))
4568 return -EIO;
4569 num = be32_to_cpup(p);
4570 if (num == 0)
4571 return 0;
4572 if (num > 1)
4573 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4574 "drivers per filesystem not supported\n",
4575 __func__);
4576
4577 status = decode_first_threshold_item4(xdr, res);
4578 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4579 }
4580 return status;
4581}
4582
4583static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4584 struct nfs_fattr *fattr, struct nfs_fh *fh,
4585 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4586 const struct nfs_server *server)
4587{
4588 int status;
4589 umode_t fmode = 0;
4590 uint32_t type;
4591 int32_t err;
4592
4593 status = decode_attr_type(xdr, bitmap, &type);
4594 if (status < 0)
4595 goto xdr_error;
4596 fattr->mode = 0;
4597 if (status != 0) {
4598 fattr->mode |= nfs_type2fmt[type];
4599 fattr->valid |= status;
4600 }
4601
4602 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4603 if (status < 0)
4604 goto xdr_error;
4605 fattr->valid |= status;
4606
4607 status = decode_attr_size(xdr, bitmap, &fattr->size);
4608 if (status < 0)
4609 goto xdr_error;
4610 fattr->valid |= status;
4611
4612 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4613 if (status < 0)
4614 goto xdr_error;
4615 fattr->valid |= status;
4616
4617 err = 0;
4618 status = decode_attr_error(xdr, bitmap, &err);
4619 if (status < 0)
4620 goto xdr_error;
4621
4622 status = decode_attr_filehandle(xdr, bitmap, fh);
4623 if (status < 0)
4624 goto xdr_error;
4625
4626 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4627 if (status < 0)
4628 goto xdr_error;
4629 fattr->valid |= status;
4630
4631 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4632 if (status < 0)
4633 goto xdr_error;
4634 fattr->valid |= status;
4635
4636 status = -EIO;
4637 if (unlikely(bitmap[0]))
4638 goto xdr_error;
4639
4640 status = decode_attr_mode(xdr, bitmap, &fmode);
4641 if (status < 0)
4642 goto xdr_error;
4643 if (status != 0) {
4644 fattr->mode |= fmode;
4645 fattr->valid |= status;
4646 }
4647
4648 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4649 if (status < 0)
4650 goto xdr_error;
4651 fattr->valid |= status;
4652
4653 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4654 if (status < 0)
4655 goto xdr_error;
4656 fattr->valid |= status;
4657
4658 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4659 if (status < 0)
4660 goto xdr_error;
4661 fattr->valid |= status;
4662
4663 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4664 if (status < 0)
4665 goto xdr_error;
4666 fattr->valid |= status;
4667
4668 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4669 if (status < 0)
4670 goto xdr_error;
4671 fattr->valid |= status;
4672
4673 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4674 if (status < 0)
4675 goto xdr_error;
4676 fattr->valid |= status;
4677
4678 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4679 if (status < 0)
4680 goto xdr_error;
4681 fattr->valid |= status;
4682
4683 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4684 if (status < 0)
4685 goto xdr_error;
4686 fattr->valid |= status;
4687
4688 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4689 if (status < 0)
4690 goto xdr_error;
4691 fattr->valid |= status;
4692
4693 status = -EIO;
4694 if (unlikely(bitmap[1]))
4695 goto xdr_error;
4696
4697 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4698 if (status < 0)
4699 goto xdr_error;
4700
4701 if (label) {
4702 status = decode_attr_security_label(xdr, bitmap, label);
4703 if (status < 0)
4704 goto xdr_error;
4705 fattr->valid |= status;
4706 }
4707
4708xdr_error:
4709 dprintk("%s: xdr returned %d\n", __func__, -status);
4710 return status;
4711}
4712
4713static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4714 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4715 struct nfs4_label *label, const struct nfs_server *server)
4716{
4717 unsigned int savep;
4718 uint32_t attrlen,
4719 bitmap[3] = {0};
4720 int status;
4721
4722 status = decode_op_hdr(xdr, OP_GETATTR);
4723 if (status < 0)
4724 goto xdr_error;
4725
4726 status = decode_attr_bitmap(xdr, bitmap);
4727 if (status < 0)
4728 goto xdr_error;
4729
4730 status = decode_attr_length(xdr, &attrlen, &savep);
4731 if (status < 0)
4732 goto xdr_error;
4733
4734 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4735 label, server);
4736 if (status < 0)
4737 goto xdr_error;
4738
4739 status = verify_attr_len(xdr, savep, attrlen);
4740xdr_error:
4741 dprintk("%s: xdr returned %d\n", __func__, -status);
4742 return status;
4743}
4744
4745static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4746 struct nfs4_label *label, const struct nfs_server *server)
4747{
4748 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4749}
4750
4751static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4752 const struct nfs_server *server)
4753{
4754 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4755}
4756
4757/*
4758 * Decode potentially multiple layout types.
4759 */
4760static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4761 struct nfs_fsinfo *fsinfo)
4762{
4763 __be32 *p;
4764 uint32_t i;
4765
4766 p = xdr_inline_decode(xdr, 4);
4767 if (unlikely(!p))
4768 return -EIO;
4769 fsinfo->nlayouttypes = be32_to_cpup(p);
4770
4771 /* pNFS is not supported by the underlying file system */
4772 if (fsinfo->nlayouttypes == 0)
4773 return 0;
4774
4775 /* Decode and set first layout type, move xdr->p past unused types */
4776 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4777 if (unlikely(!p))
4778 return -EIO;
4779
4780 /* If we get too many, then just cap it at the max */
4781 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4782 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4783 __func__, fsinfo->nlayouttypes);
4784 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4785 }
4786
4787 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4788 fsinfo->layouttype[i] = be32_to_cpup(p++);
4789 return 0;
4790}
4791
4792/*
4793 * The type of file system exported.
4794 * Note we must ensure that layouttype is set in any non-error case.
4795 */
4796static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4797 struct nfs_fsinfo *fsinfo)
4798{
4799 int status = 0;
4800
4801 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4802 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4803 return -EIO;
4804 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4805 status = decode_pnfs_layout_types(xdr, fsinfo);
4806 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4807 }
4808 return status;
4809}
4810
4811/*
4812 * The prefered block size for layout directed io
4813 */
4814static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4815 uint32_t *res)
4816{
4817 __be32 *p;
4818
4819 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4820 *res = 0;
4821 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4822 p = xdr_inline_decode(xdr, 4);
4823 if (unlikely(!p))
4824 return -EIO;
4825 *res = be32_to_cpup(p);
4826 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4827 }
4828 return 0;
4829}
4830
4831/*
4832 * The granularity of a CLONE operation.
4833 */
4834static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4835 uint32_t *res)
4836{
4837 __be32 *p;
4838
4839 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4840 *res = 0;
4841 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4842 p = xdr_inline_decode(xdr, 4);
4843 if (unlikely(!p))
4844 return -EIO;
4845 *res = be32_to_cpup(p);
4846 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4847 }
4848 return 0;
4849}
4850
4851static int decode_attr_change_attr_type(struct xdr_stream *xdr,
4852 uint32_t *bitmap,
4853 enum nfs4_change_attr_type *res)
4854{
4855 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4856
4857 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4858 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) {
4859 if (xdr_stream_decode_u32(xdr, &tmp))
4860 return -EIO;
4861 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE;
4862 }
4863
4864 switch(tmp) {
4865 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR:
4866 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER:
4867 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS:
4868 case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
4869 *res = tmp;
4870 break;
4871 default:
4872 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4873 }
4874 return 0;
4875}
4876
4877static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4878{
4879 unsigned int savep;
4880 uint32_t attrlen, bitmap[3];
4881 int status;
4882
4883 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4884 goto xdr_error;
4885 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4886 goto xdr_error;
4887 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4888 goto xdr_error;
4889
4890 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4891
4892 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4893 goto xdr_error;
4894 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4895 goto xdr_error;
4896 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4897 goto xdr_error;
4898 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4899 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4900 goto xdr_error;
4901 fsinfo->wtpref = fsinfo->wtmax;
4902
4903 status = -EIO;
4904 if (unlikely(bitmap[0]))
4905 goto xdr_error;
4906
4907 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4908 if (status != 0)
4909 goto xdr_error;
4910 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4911 if (status != 0)
4912 goto xdr_error;
4913
4914 status = -EIO;
4915 if (unlikely(bitmap[1]))
4916 goto xdr_error;
4917
4918 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4919 if (status)
4920 goto xdr_error;
4921 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4922 if (status)
4923 goto xdr_error;
4924
4925 status = decode_attr_change_attr_type(xdr, bitmap,
4926 &fsinfo->change_attr_type);
4927 if (status)
4928 goto xdr_error;
4929
4930 status = decode_attr_xattrsupport(xdr, bitmap,
4931 &fsinfo->xattr_support);
4932 if (status)
4933 goto xdr_error;
4934
4935 status = verify_attr_len(xdr, savep, attrlen);
4936xdr_error:
4937 dprintk("%s: xdr returned %d!\n", __func__, -status);
4938 return status;
4939}
4940
4941static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4942{
4943 __be32 *p;
4944 uint32_t len;
4945 int status;
4946
4947 /* Zero handle first to allow comparisons */
4948 memset(fh, 0, sizeof(*fh));
4949
4950 status = decode_op_hdr(xdr, OP_GETFH);
4951 if (status)
4952 return status;
4953
4954 p = xdr_inline_decode(xdr, 4);
4955 if (unlikely(!p))
4956 return -EIO;
4957 len = be32_to_cpup(p);
4958 if (len > NFS4_FHSIZE || len == 0) {
4959 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE);
4960 return -EREMOTEIO;
4961 }
4962 fh->size = len;
4963 p = xdr_inline_decode(xdr, len);
4964 if (unlikely(!p))
4965 return -EIO;
4966 memcpy(fh->data, p, len);
4967 return 0;
4968}
4969
4970static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4971{
4972 int status;
4973
4974 status = decode_op_hdr(xdr, OP_LINK);
4975 if (status)
4976 return status;
4977 return decode_change_info(xdr, cinfo);
4978}
4979
4980/*
4981 * We create the owner, so we know a proper owner.id length is 4.
4982 */
4983static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4984{
4985 uint64_t offset, length, clientid;
4986 __be32 *p;
4987 uint32_t namelen, type;
4988
4989 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4990 if (unlikely(!p))
4991 return -EIO;
4992 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4993 p = xdr_decode_hyper(p, &length);
4994 type = be32_to_cpup(p++); /* 4 byte read */
4995 if (fl != NULL) { /* manipulate file lock */
4996 fl->fl_start = (loff_t)offset;
4997 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4998 if (length == ~(uint64_t)0)
4999 fl->fl_end = OFFSET_MAX;
5000 fl->fl_type = F_WRLCK;
5001 if (type & 1)
5002 fl->fl_type = F_RDLCK;
5003 fl->fl_pid = 0;
5004 }
5005 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
5006 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5007 p = xdr_inline_decode(xdr, namelen); /* variable size field */
5008 if (likely(!p))
5009 return -EIO;
5010 return -NFS4ERR_DENIED;
5011}
5012
5013static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5014{
5015 int status;
5016
5017 status = decode_op_hdr(xdr, OP_LOCK);
5018 if (status == -EIO)
5019 goto out;
5020 if (status == 0) {
5021 status = decode_lock_stateid(xdr, &res->stateid);
5022 if (unlikely(status))
5023 goto out;
5024 } else if (status == -NFS4ERR_DENIED)
5025 status = decode_lock_denied(xdr, NULL);
5026 if (res->open_seqid != NULL)
5027 nfs_increment_open_seqid(status, res->open_seqid);
5028 nfs_increment_lock_seqid(status, res->lock_seqid);
5029out:
5030 return status;
5031}
5032
5033static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5034{
5035 int status;
5036 status = decode_op_hdr(xdr, OP_LOCKT);
5037 if (status == -NFS4ERR_DENIED)
5038 return decode_lock_denied(xdr, res->denied);
5039 return status;
5040}
5041
5042static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5043{
5044 int status;
5045
5046 status = decode_op_hdr(xdr, OP_LOCKU);
5047 if (status != -EIO)
5048 nfs_increment_lock_seqid(status, res->seqid);
5049 if (status == 0)
5050 status = decode_lock_stateid(xdr, &res->stateid);
5051 return status;
5052}
5053
5054static int decode_release_lockowner(struct xdr_stream *xdr)
5055{
5056 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5057}
5058
5059static int decode_lookup(struct xdr_stream *xdr)
5060{
5061 return decode_op_hdr(xdr, OP_LOOKUP);
5062}
5063
5064static int decode_lookupp(struct xdr_stream *xdr)
5065{
5066 return decode_op_hdr(xdr, OP_LOOKUPP);
5067}
5068
5069/* This is too sick! */
5070static int decode_space_limit(struct xdr_stream *xdr,
5071 unsigned long *pagemod_limit)
5072{
5073 __be32 *p;
5074 uint32_t limit_type, nblocks, blocksize;
5075 u64 maxsize = 0;
5076
5077 p = xdr_inline_decode(xdr, 12);
5078 if (unlikely(!p))
5079 return -EIO;
5080 limit_type = be32_to_cpup(p++);
5081 switch (limit_type) {
5082 case NFS4_LIMIT_SIZE:
5083 xdr_decode_hyper(p, &maxsize);
5084 break;
5085 case NFS4_LIMIT_BLOCKS:
5086 nblocks = be32_to_cpup(p++);
5087 blocksize = be32_to_cpup(p);
5088 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5089 }
5090 maxsize >>= PAGE_SHIFT;
5091 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5092 return 0;
5093}
5094
5095static int decode_rw_delegation(struct xdr_stream *xdr,
5096 uint32_t delegation_type,
5097 struct nfs_openres *res)
5098{
5099 __be32 *p;
5100 int status;
5101
5102 status = decode_delegation_stateid(xdr, &res->delegation);
5103 if (unlikely(status))
5104 return status;
5105 p = xdr_inline_decode(xdr, 4);
5106 if (unlikely(!p))
5107 return -EIO;
5108 res->do_recall = be32_to_cpup(p);
5109
5110 switch (delegation_type) {
5111 case NFS4_OPEN_DELEGATE_READ:
5112 res->delegation_type = FMODE_READ;
5113 break;
5114 case NFS4_OPEN_DELEGATE_WRITE:
5115 res->delegation_type = FMODE_WRITE|FMODE_READ;
5116 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5117 return -EIO;
5118 }
5119 return decode_ace(xdr, NULL);
5120}
5121
5122static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5123{
5124 __be32 *p;
5125 uint32_t why_no_delegation;
5126
5127 p = xdr_inline_decode(xdr, 4);
5128 if (unlikely(!p))
5129 return -EIO;
5130 why_no_delegation = be32_to_cpup(p);
5131 switch (why_no_delegation) {
5132 case WND4_CONTENTION:
5133 case WND4_RESOURCE:
5134 xdr_inline_decode(xdr, 4);
5135 /* Ignore for now */
5136 }
5137 return 0;
5138}
5139
5140static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5141{
5142 __be32 *p;
5143 uint32_t delegation_type;
5144
5145 p = xdr_inline_decode(xdr, 4);
5146 if (unlikely(!p))
5147 return -EIO;
5148 delegation_type = be32_to_cpup(p);
5149 res->delegation_type = 0;
5150 switch (delegation_type) {
5151 case NFS4_OPEN_DELEGATE_NONE:
5152 return 0;
5153 case NFS4_OPEN_DELEGATE_READ:
5154 case NFS4_OPEN_DELEGATE_WRITE:
5155 return decode_rw_delegation(xdr, delegation_type, res);
5156 case NFS4_OPEN_DELEGATE_NONE_EXT:
5157 return decode_no_delegation(xdr, res);
5158 }
5159 return -EIO;
5160}
5161
5162static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5163{
5164 __be32 *p;
5165 uint32_t savewords, bmlen, i;
5166 int status;
5167
5168 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5169 return status;
5170 nfs_increment_open_seqid(status, res->seqid);
5171 if (status)
5172 return status;
5173 status = decode_open_stateid(xdr, &res->stateid);
5174 if (unlikely(status))
5175 return status;
5176
5177 decode_change_info(xdr, &res->cinfo);
5178
5179 p = xdr_inline_decode(xdr, 8);
5180 if (unlikely(!p))
5181 return -EIO;
5182 res->rflags = be32_to_cpup(p++);
5183 bmlen = be32_to_cpup(p);
5184 if (bmlen > 10)
5185 goto xdr_error;
5186
5187 p = xdr_inline_decode(xdr, bmlen << 2);
5188 if (unlikely(!p))
5189 return -EIO;
5190 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5191 for (i = 0; i < savewords; ++i)
5192 res->attrset[i] = be32_to_cpup(p++);
5193 for (; i < NFS4_BITMAP_SIZE; i++)
5194 res->attrset[i] = 0;
5195
5196 return decode_delegation(xdr, res);
5197xdr_error:
5198 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5199 return -EIO;
5200}
5201
5202static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5203{
5204 int status;
5205
5206 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5207 if (status != -EIO)
5208 nfs_increment_open_seqid(status, res->seqid);
5209 if (!status)
5210 status = decode_open_stateid(xdr, &res->stateid);
5211 return status;
5212}
5213
5214static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5215{
5216 int status;
5217
5218 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5219 if (status != -EIO)
5220 nfs_increment_open_seqid(status, res->seqid);
5221 if (!status)
5222 status = decode_open_stateid(xdr, &res->stateid);
5223 return status;
5224}
5225
5226static int decode_putfh(struct xdr_stream *xdr)
5227{
5228 return decode_op_hdr(xdr, OP_PUTFH);
5229}
5230
5231static int decode_putrootfh(struct xdr_stream *xdr)
5232{
5233 return decode_op_hdr(xdr, OP_PUTROOTFH);
5234}
5235
5236static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5237 struct nfs_pgio_res *res)
5238{
5239 __be32 *p;
5240 uint32_t count, eof, recvd;
5241 int status;
5242
5243 status = decode_op_hdr(xdr, OP_READ);
5244 if (status)
5245 return status;
5246 p = xdr_inline_decode(xdr, 8);
5247 if (unlikely(!p))
5248 return -EIO;
5249 eof = be32_to_cpup(p++);
5250 count = be32_to_cpup(p);
5251 recvd = xdr_read_pages(xdr, count);
5252 if (count > recvd) {
5253 dprintk("NFS: server cheating in read reply: "
5254 "count %u > recvd %u\n", count, recvd);
5255 count = recvd;
5256 eof = 0;
5257 }
5258 res->eof = eof;
5259 res->count = count;
5260 return 0;
5261}
5262
5263static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5264{
5265 int status;
5266 __be32 verf[2];
5267
5268 status = decode_op_hdr(xdr, OP_READDIR);
5269 if (!status)
5270 status = decode_verifier(xdr, readdir->verifier.data);
5271 if (unlikely(status))
5272 return status;
5273 memcpy(verf, readdir->verifier.data, sizeof(verf));
5274 dprintk("%s: verifier = %08x:%08x\n",
5275 __func__, verf[0], verf[1]);
5276 return xdr_read_pages(xdr, xdr->buf->page_len);
5277}
5278
5279static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5280{
5281 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5282 u32 len, recvd;
5283 __be32 *p;
5284 int status;
5285
5286 status = decode_op_hdr(xdr, OP_READLINK);
5287 if (status)
5288 return status;
5289
5290 /* Convert length of symlink */
5291 p = xdr_inline_decode(xdr, 4);
5292 if (unlikely(!p))
5293 return -EIO;
5294 len = be32_to_cpup(p);
5295 if (len >= rcvbuf->page_len || len <= 0) {
5296 dprintk("nfs: server returned giant symlink!\n");
5297 return -ENAMETOOLONG;
5298 }
5299 recvd = xdr_read_pages(xdr, len);
5300 if (recvd < len) {
5301 dprintk("NFS: server cheating in readlink reply: "
5302 "count %u > recvd %u\n", len, recvd);
5303 return -EIO;
5304 }
5305 /*
5306 * The XDR encode routine has set things up so that
5307 * the link text will be copied directly into the
5308 * buffer. We just have to do overflow-checking,
5309 * and null-terminate the text (the VFS expects
5310 * null-termination).
5311 */
5312 xdr_terminate_string(rcvbuf, len);
5313 return 0;
5314}
5315
5316static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5317{
5318 int status;
5319
5320 status = decode_op_hdr(xdr, OP_REMOVE);
5321 if (status)
5322 goto out;
5323 status = decode_change_info(xdr, cinfo);
5324out:
5325 return status;
5326}
5327
5328static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5329 struct nfs4_change_info *new_cinfo)
5330{
5331 int status;
5332
5333 status = decode_op_hdr(xdr, OP_RENAME);
5334 if (status)
5335 goto out;
5336 if ((status = decode_change_info(xdr, old_cinfo)))
5337 goto out;
5338 status = decode_change_info(xdr, new_cinfo);
5339out:
5340 return status;
5341}
5342
5343static int decode_renew(struct xdr_stream *xdr)
5344{
5345 return decode_op_hdr(xdr, OP_RENEW);
5346}
5347
5348static int
5349decode_restorefh(struct xdr_stream *xdr)
5350{
5351 return decode_op_hdr(xdr, OP_RESTOREFH);
5352}
5353
5354static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5355 struct nfs_getaclres *res)
5356{
5357 unsigned int savep;
5358 uint32_t attrlen,
5359 bitmap[3] = {0};
5360 int status;
5361
5362 res->acl_len = 0;
5363 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5364 goto out;
5365
5366 xdr_enter_page(xdr, xdr->buf->page_len);
5367
5368 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5369 goto out;
5370 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5371 goto out;
5372
5373 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5374 return -EIO;
5375 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5376
5377 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5378 * are stored with the acl data to handle the problem of
5379 * variable length bitmaps.*/
5380 res->acl_data_offset = xdr_page_pos(xdr);
5381 res->acl_len = attrlen;
5382
5383 /* Check for receive buffer overflow */
5384 if (res->acl_len > xdr_stream_remaining(xdr) ||
5385 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5386 res->acl_flags |= NFS4_ACL_TRUNC;
5387 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5388 attrlen, xdr_stream_remaining(xdr));
5389 }
5390 } else
5391 status = -EOPNOTSUPP;
5392
5393out:
5394 return status;
5395}
5396
5397static int
5398decode_savefh(struct xdr_stream *xdr)
5399{
5400 return decode_op_hdr(xdr, OP_SAVEFH);
5401}
5402
5403static int decode_setattr(struct xdr_stream *xdr)
5404{
5405 int status;
5406
5407 status = decode_op_hdr(xdr, OP_SETATTR);
5408 if (status)
5409 return status;
5410 if (decode_bitmap4(xdr, NULL, 0) >= 0)
5411 return 0;
5412 return -EIO;
5413}
5414
5415static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5416{
5417 __be32 *p;
5418 uint32_t opnum;
5419 int32_t nfserr;
5420
5421 p = xdr_inline_decode(xdr, 8);
5422 if (unlikely(!p))
5423 return -EIO;
5424 opnum = be32_to_cpup(p++);
5425 if (opnum != OP_SETCLIENTID) {
5426 dprintk("nfs: decode_setclientid: Server returned operation"
5427 " %d\n", opnum);
5428 return -EIO;
5429 }
5430 nfserr = be32_to_cpup(p);
5431 if (nfserr == NFS_OK) {
5432 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5433 if (unlikely(!p))
5434 return -EIO;
5435 p = xdr_decode_hyper(p, &res->clientid);
5436 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5437 } else if (nfserr == NFSERR_CLID_INUSE) {
5438 uint32_t len;
5439
5440 /* skip netid string */
5441 p = xdr_inline_decode(xdr, 4);
5442 if (unlikely(!p))
5443 return -EIO;
5444 len = be32_to_cpup(p);
5445 p = xdr_inline_decode(xdr, len);
5446 if (unlikely(!p))
5447 return -EIO;
5448
5449 /* skip uaddr string */
5450 p = xdr_inline_decode(xdr, 4);
5451 if (unlikely(!p))
5452 return -EIO;
5453 len = be32_to_cpup(p);
5454 p = xdr_inline_decode(xdr, len);
5455 if (unlikely(!p))
5456 return -EIO;
5457 return -NFSERR_CLID_INUSE;
5458 } else
5459 return nfs4_stat_to_errno(nfserr);
5460
5461 return 0;
5462}
5463
5464static int decode_setclientid_confirm(struct xdr_stream *xdr)
5465{
5466 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5467}
5468
5469static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5470{
5471 __be32 *p;
5472 int status;
5473
5474 status = decode_op_hdr(xdr, OP_WRITE);
5475 if (status)
5476 return status;
5477
5478 p = xdr_inline_decode(xdr, 8);
5479 if (unlikely(!p))
5480 return -EIO;
5481 res->count = be32_to_cpup(p++);
5482 res->verf->committed = be32_to_cpup(p++);
5483 return decode_write_verifier(xdr, &res->verf->verifier);
5484}
5485
5486static int decode_delegreturn(struct xdr_stream *xdr)
5487{
5488 return decode_op_hdr(xdr, OP_DELEGRETURN);
5489}
5490
5491static int decode_secinfo_gss(struct xdr_stream *xdr,
5492 struct nfs4_secinfo4 *flavor)
5493{
5494 u32 oid_len;
5495 __be32 *p;
5496
5497 p = xdr_inline_decode(xdr, 4);
5498 if (unlikely(!p))
5499 return -EIO;
5500 oid_len = be32_to_cpup(p);
5501 if (oid_len > GSS_OID_MAX_LEN)
5502 return -EINVAL;
5503
5504 p = xdr_inline_decode(xdr, oid_len);
5505 if (unlikely(!p))
5506 return -EIO;
5507 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5508 flavor->flavor_info.oid.len = oid_len;
5509
5510 p = xdr_inline_decode(xdr, 8);
5511 if (unlikely(!p))
5512 return -EIO;
5513 flavor->flavor_info.qop = be32_to_cpup(p++);
5514 flavor->flavor_info.service = be32_to_cpup(p);
5515
5516 return 0;
5517}
5518
5519static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5520{
5521 struct nfs4_secinfo4 *sec_flavor;
5522 unsigned int i, num_flavors;
5523 int status;
5524 __be32 *p;
5525
5526 p = xdr_inline_decode(xdr, 4);
5527 if (unlikely(!p))
5528 return -EIO;
5529
5530 res->flavors->num_flavors = 0;
5531 num_flavors = be32_to_cpup(p);
5532
5533 for (i = 0; i < num_flavors; i++) {
5534 sec_flavor = &res->flavors->flavors[i];
5535 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5536 break;
5537
5538 p = xdr_inline_decode(xdr, 4);
5539 if (unlikely(!p))
5540 return -EIO;
5541 sec_flavor->flavor = be32_to_cpup(p);
5542
5543 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5544 status = decode_secinfo_gss(xdr, sec_flavor);
5545 if (status)
5546 goto out;
5547 }
5548 res->flavors->num_flavors++;
5549 }
5550
5551 status = 0;
5552out:
5553 return status;
5554}
5555
5556static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5557{
5558 int status = decode_op_hdr(xdr, OP_SECINFO);
5559 if (status)
5560 return status;
5561 return decode_secinfo_common(xdr, res);
5562}
5563
5564#if defined(CONFIG_NFS_V4_1)
5565static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5566{
5567 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5568 if (status)
5569 return status;
5570 return decode_secinfo_common(xdr, res);
5571}
5572
5573static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5574{
5575 __be32 *p;
5576 uint32_t bitmap_words;
5577 unsigned int i;
5578
5579 p = xdr_inline_decode(xdr, 4);
5580 if (!p)
5581 return -EIO;
5582 bitmap_words = be32_to_cpup(p++);
5583 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5584 return -EIO;
5585 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5586 for (i = 0; i < bitmap_words; i++)
5587 op_map->u.words[i] = be32_to_cpup(p++);
5588
5589 return 0;
5590}
5591
5592static int decode_exchange_id(struct xdr_stream *xdr,
5593 struct nfs41_exchange_id_res *res)
5594{
5595 __be32 *p;
5596 uint32_t dummy;
5597 char *dummy_str;
5598 int status;
5599 uint32_t impl_id_count;
5600
5601 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5602 if (status)
5603 return status;
5604
5605 p = xdr_inline_decode(xdr, 8);
5606 if (unlikely(!p))
5607 return -EIO;
5608 xdr_decode_hyper(p, &res->clientid);
5609 p = xdr_inline_decode(xdr, 12);
5610 if (unlikely(!p))
5611 return -EIO;
5612 res->seqid = be32_to_cpup(p++);
5613 res->flags = be32_to_cpup(p++);
5614
5615 res->state_protect.how = be32_to_cpup(p);
5616 switch (res->state_protect.how) {
5617 case SP4_NONE:
5618 break;
5619 case SP4_MACH_CRED:
5620 status = decode_op_map(xdr, &res->state_protect.enforce);
5621 if (status)
5622 return status;
5623 status = decode_op_map(xdr, &res->state_protect.allow);
5624 if (status)
5625 return status;
5626 break;
5627 default:
5628 WARN_ON_ONCE(1);
5629 return -EIO;
5630 }
5631
5632 /* server_owner4.so_minor_id */
5633 p = xdr_inline_decode(xdr, 8);
5634 if (unlikely(!p))
5635 return -EIO;
5636 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5637
5638 /* server_owner4.so_major_id */
5639 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5640 if (unlikely(status))
5641 return status;
5642 memcpy(res->server_owner->major_id, dummy_str, dummy);
5643 res->server_owner->major_id_sz = dummy;
5644
5645 /* server_scope4 */
5646 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5647 if (unlikely(status))
5648 return status;
5649 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5650 res->server_scope->server_scope_sz = dummy;
5651
5652 /* Implementation Id */
5653 p = xdr_inline_decode(xdr, 4);
5654 if (unlikely(!p))
5655 return -EIO;
5656 impl_id_count = be32_to_cpup(p++);
5657
5658 if (impl_id_count) {
5659 /* nii_domain */
5660 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5661 if (unlikely(status))
5662 return status;
5663 memcpy(res->impl_id->domain, dummy_str, dummy);
5664
5665 /* nii_name */
5666 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5667 if (unlikely(status))
5668 return status;
5669 memcpy(res->impl_id->name, dummy_str, dummy);
5670
5671 /* nii_date */
5672 p = xdr_inline_decode(xdr, 12);
5673 if (unlikely(!p))
5674 return -EIO;
5675 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5676 res->impl_id->date.nseconds = be32_to_cpup(p);
5677
5678 /* if there's more than one entry, ignore the rest */
5679 }
5680 return 0;
5681}
5682
5683static int decode_chan_attrs(struct xdr_stream *xdr,
5684 struct nfs4_channel_attrs *attrs)
5685{
5686 __be32 *p;
5687 u32 nr_attrs, val;
5688
5689 p = xdr_inline_decode(xdr, 28);
5690 if (unlikely(!p))
5691 return -EIO;
5692 val = be32_to_cpup(p++); /* headerpadsz */
5693 if (val)
5694 return -EINVAL; /* no support for header padding yet */
5695 attrs->max_rqst_sz = be32_to_cpup(p++);
5696 attrs->max_resp_sz = be32_to_cpup(p++);
5697 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5698 attrs->max_ops = be32_to_cpup(p++);
5699 attrs->max_reqs = be32_to_cpup(p++);
5700 nr_attrs = be32_to_cpup(p);
5701 if (unlikely(nr_attrs > 1)) {
5702 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5703 "count %u\n", __func__, nr_attrs);
5704 return -EINVAL;
5705 }
5706 if (nr_attrs == 1) {
5707 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5708 if (unlikely(!p))
5709 return -EIO;
5710 }
5711 return 0;
5712}
5713
5714static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5715{
5716 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5717}
5718
5719static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5720 struct nfs41_bind_conn_to_session_res *res)
5721{
5722 __be32 *p;
5723 int status;
5724
5725 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5726 if (!status)
5727 status = decode_sessionid(xdr, &res->sessionid);
5728 if (unlikely(status))
5729 return status;
5730
5731 /* dir flags, rdma mode bool */
5732 p = xdr_inline_decode(xdr, 8);
5733 if (unlikely(!p))
5734 return -EIO;
5735
5736 res->dir = be32_to_cpup(p++);
5737 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5738 return -EIO;
5739 if (be32_to_cpup(p) == 0)
5740 res->use_conn_in_rdma_mode = false;
5741 else
5742 res->use_conn_in_rdma_mode = true;
5743
5744 return 0;
5745}
5746
5747static int decode_create_session(struct xdr_stream *xdr,
5748 struct nfs41_create_session_res *res)
5749{
5750 __be32 *p;
5751 int status;
5752
5753 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5754 if (!status)
5755 status = decode_sessionid(xdr, &res->sessionid);
5756 if (unlikely(status))
5757 return status;
5758
5759 /* seqid, flags */
5760 p = xdr_inline_decode(xdr, 8);
5761 if (unlikely(!p))
5762 return -EIO;
5763 res->seqid = be32_to_cpup(p++);
5764 res->flags = be32_to_cpup(p);
5765
5766 /* Channel attributes */
5767 status = decode_chan_attrs(xdr, &res->fc_attrs);
5768 if (!status)
5769 status = decode_chan_attrs(xdr, &res->bc_attrs);
5770 return status;
5771}
5772
5773static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5774{
5775 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5776}
5777
5778static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5779{
5780 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5781}
5782
5783static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5784{
5785 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5786}
5787#endif /* CONFIG_NFS_V4_1 */
5788
5789static int decode_sequence(struct xdr_stream *xdr,
5790 struct nfs4_sequence_res *res,
5791 struct rpc_rqst *rqstp)
5792{
5793#if defined(CONFIG_NFS_V4_1)
5794 struct nfs4_session *session;
5795 struct nfs4_sessionid id;
5796 u32 dummy;
5797 int status;
5798 __be32 *p;
5799
5800 if (res->sr_slot == NULL)
5801 return 0;
5802 if (!res->sr_slot->table->session)
5803 return 0;
5804
5805 status = decode_op_hdr(xdr, OP_SEQUENCE);
5806 if (!status)
5807 status = decode_sessionid(xdr, &id);
5808 if (unlikely(status))
5809 goto out_err;
5810
5811 /*
5812 * If the server returns different values for sessionID, slotID or
5813 * sequence number, the server is looney tunes.
5814 */
5815 status = -EREMOTEIO;
5816 session = res->sr_slot->table->session;
5817
5818 if (memcmp(id.data, session->sess_id.data,
5819 NFS4_MAX_SESSIONID_LEN)) {
5820 dprintk("%s Invalid session id\n", __func__);
5821 goto out_err;
5822 }
5823
5824 p = xdr_inline_decode(xdr, 20);
5825 if (unlikely(!p))
5826 goto out_overflow;
5827
5828 /* seqid */
5829 dummy = be32_to_cpup(p++);
5830 if (dummy != res->sr_slot->seq_nr) {
5831 dprintk("%s Invalid sequence number\n", __func__);
5832 goto out_err;
5833 }
5834 /* slot id */
5835 dummy = be32_to_cpup(p++);
5836 if (dummy != res->sr_slot->slot_nr) {
5837 dprintk("%s Invalid slot id\n", __func__);
5838 goto out_err;
5839 }
5840 /* highest slot id */
5841 res->sr_highest_slotid = be32_to_cpup(p++);
5842 /* target highest slot id */
5843 res->sr_target_highest_slotid = be32_to_cpup(p++);
5844 /* result flags */
5845 res->sr_status_flags = be32_to_cpup(p);
5846 status = 0;
5847out_err:
5848 res->sr_status = status;
5849 return status;
5850out_overflow:
5851 status = -EIO;
5852 goto out_err;
5853#else /* CONFIG_NFS_V4_1 */
5854 return 0;
5855#endif /* CONFIG_NFS_V4_1 */
5856}
5857
5858#if defined(CONFIG_NFS_V4_1)
5859static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5860{
5861 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5862 return decode_stateid(xdr, stateid);
5863}
5864
5865static int decode_getdeviceinfo(struct xdr_stream *xdr,
5866 struct nfs4_getdeviceinfo_res *res)
5867{
5868 struct pnfs_device *pdev = res->pdev;
5869 __be32 *p;
5870 uint32_t len, type;
5871 int status;
5872
5873 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5874 if (status) {
5875 if (status == -ETOOSMALL) {
5876 p = xdr_inline_decode(xdr, 4);
5877 if (unlikely(!p))
5878 return -EIO;
5879 pdev->mincount = be32_to_cpup(p);
5880 dprintk("%s: Min count too small. mincnt = %u\n",
5881 __func__, pdev->mincount);
5882 }
5883 return status;
5884 }
5885
5886 p = xdr_inline_decode(xdr, 8);
5887 if (unlikely(!p))
5888 return -EIO;
5889 type = be32_to_cpup(p++);
5890 if (type != pdev->layout_type) {
5891 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5892 __func__, pdev->layout_type, type);
5893 return -EINVAL;
5894 }
5895 /*
5896 * Get the length of the opaque device_addr4. xdr_read_pages places
5897 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5898 * and places the remaining xdr data in xdr_buf->tail
5899 */
5900 pdev->mincount = be32_to_cpup(p);
5901 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5902 return -EIO;
5903
5904 /* Parse notification bitmap, verifying that it is zero. */
5905 p = xdr_inline_decode(xdr, 4);
5906 if (unlikely(!p))
5907 return -EIO;
5908 len = be32_to_cpup(p);
5909 if (len) {
5910 uint32_t i;
5911
5912 p = xdr_inline_decode(xdr, 4 * len);
5913 if (unlikely(!p))
5914 return -EIO;
5915
5916 res->notification = be32_to_cpup(p++);
5917 for (i = 1; i < len; i++) {
5918 if (be32_to_cpup(p++)) {
5919 dprintk("%s: unsupported notification\n",
5920 __func__);
5921 return -EIO;
5922 }
5923 }
5924 }
5925 return 0;
5926}
5927
5928static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5929 struct nfs4_layoutget_res *res)
5930{
5931 __be32 *p;
5932 int status;
5933 u32 layout_count;
5934 u32 recvd;
5935
5936 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5937 if (status)
5938 goto out;
5939 p = xdr_inline_decode(xdr, 4);
5940 if (unlikely(!p))
5941 goto out_overflow;
5942 res->return_on_close = be32_to_cpup(p);
5943 decode_layout_stateid(xdr, &res->stateid);
5944 p = xdr_inline_decode(xdr, 4);
5945 if (unlikely(!p))
5946 goto out_overflow;
5947 layout_count = be32_to_cpup(p);
5948 if (!layout_count) {
5949 dprintk("%s: server responded with empty layout array\n",
5950 __func__);
5951 status = -EINVAL;
5952 goto out;
5953 }
5954
5955 p = xdr_inline_decode(xdr, 28);
5956 if (unlikely(!p))
5957 goto out_overflow;
5958 p = xdr_decode_hyper(p, &res->range.offset);
5959 p = xdr_decode_hyper(p, &res->range.length);
5960 res->range.iomode = be32_to_cpup(p++);
5961 res->type = be32_to_cpup(p++);
5962 res->layoutp->len = be32_to_cpup(p);
5963
5964 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5965 __func__,
5966 (unsigned long)res->range.offset,
5967 (unsigned long)res->range.length,
5968 res->range.iomode,
5969 res->type,
5970 res->layoutp->len);
5971
5972 recvd = xdr_read_pages(xdr, res->layoutp->len);
5973 if (res->layoutp->len > recvd) {
5974 dprintk("NFS: server cheating in layoutget reply: "
5975 "layout len %u > recvd %u\n",
5976 res->layoutp->len, recvd);
5977 status = -EINVAL;
5978 goto out;
5979 }
5980
5981 if (layout_count > 1) {
5982 /* We only handle a length one array at the moment. Any
5983 * further entries are just ignored. Note that this means
5984 * the client may see a response that is less than the
5985 * minimum it requested.
5986 */
5987 dprintk("%s: server responded with %d layouts, dropping tail\n",
5988 __func__, layout_count);
5989 }
5990
5991out:
5992 res->status = status;
5993 return status;
5994out_overflow:
5995 status = -EIO;
5996 goto out;
5997}
5998
5999static int decode_layoutreturn(struct xdr_stream *xdr,
6000 struct nfs4_layoutreturn_res *res)
6001{
6002 __be32 *p;
6003 int status;
6004
6005 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6006 if (status)
6007 return status;
6008 p = xdr_inline_decode(xdr, 4);
6009 if (unlikely(!p))
6010 return -EIO;
6011 res->lrs_present = be32_to_cpup(p);
6012 if (res->lrs_present)
6013 status = decode_layout_stateid(xdr, &res->stateid);
6014 else
6015 nfs4_stateid_copy(&res->stateid, &invalid_stateid);
6016 return status;
6017}
6018
6019static int decode_layoutcommit(struct xdr_stream *xdr,
6020 struct rpc_rqst *req,
6021 struct nfs4_layoutcommit_res *res)
6022{
6023 __be32 *p;
6024 __u32 sizechanged;
6025 int status;
6026
6027 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6028 res->status = status;
6029 if (status)
6030 return status;
6031
6032 p = xdr_inline_decode(xdr, 4);
6033 if (unlikely(!p))
6034 return -EIO;
6035 sizechanged = be32_to_cpup(p);
6036
6037 if (sizechanged) {
6038 /* throw away new size */
6039 p = xdr_inline_decode(xdr, 8);
6040 if (unlikely(!p))
6041 return -EIO;
6042 }
6043 return 0;
6044}
6045
6046static int decode_test_stateid(struct xdr_stream *xdr,
6047 struct nfs41_test_stateid_res *res)
6048{
6049 __be32 *p;
6050 int status;
6051 int num_res;
6052
6053 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6054 if (status)
6055 return status;
6056
6057 p = xdr_inline_decode(xdr, 4);
6058 if (unlikely(!p))
6059 return -EIO;
6060 num_res = be32_to_cpup(p++);
6061 if (num_res != 1)
6062 return -EIO;
6063
6064 p = xdr_inline_decode(xdr, 4);
6065 if (unlikely(!p))
6066 return -EIO;
6067 res->status = be32_to_cpup(p++);
6068
6069 return status;
6070}
6071
6072static int decode_free_stateid(struct xdr_stream *xdr,
6073 struct nfs41_free_stateid_res *res)
6074{
6075 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6076 return res->status;
6077}
6078#else
6079static inline
6080int decode_layoutreturn(struct xdr_stream *xdr,
6081 struct nfs4_layoutreturn_res *res)
6082{
6083 return 0;
6084}
6085
6086static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6087 struct nfs4_layoutget_res *res)
6088{
6089 return 0;
6090}
6091
6092#endif /* CONFIG_NFS_V4_1 */
6093
6094/*
6095 * END OF "GENERIC" DECODE ROUTINES.
6096 */
6097
6098/*
6099 * Decode OPEN_DOWNGRADE response
6100 */
6101static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6102 struct xdr_stream *xdr,
6103 void *data)
6104{
6105 struct nfs_closeres *res = data;
6106 struct compound_hdr hdr;
6107 int status;
6108
6109 status = decode_compound_hdr(xdr, &hdr);
6110 if (status)
6111 goto out;
6112 status = decode_sequence(xdr, &res->seq_res, rqstp);
6113 if (status)
6114 goto out;
6115 status = decode_putfh(xdr);
6116 if (status)
6117 goto out;
6118 if (res->lr_res) {
6119 status = decode_layoutreturn(xdr, res->lr_res);
6120 res->lr_ret = status;
6121 if (status)
6122 goto out;
6123 }
6124 status = decode_open_downgrade(xdr, res);
6125out:
6126 return status;
6127}
6128
6129/*
6130 * Decode ACCESS response
6131 */
6132static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6133 void *data)
6134{
6135 struct nfs4_accessres *res = data;
6136 struct compound_hdr hdr;
6137 int status;
6138
6139 status = decode_compound_hdr(xdr, &hdr);
6140 if (status)
6141 goto out;
6142 status = decode_sequence(xdr, &res->seq_res, rqstp);
6143 if (status)
6144 goto out;
6145 status = decode_putfh(xdr);
6146 if (status != 0)
6147 goto out;
6148 status = decode_access(xdr, &res->supported, &res->access);
6149 if (status != 0)
6150 goto out;
6151 if (res->fattr)
6152 decode_getfattr(xdr, res->fattr, res->server);
6153out:
6154 return status;
6155}
6156
6157/*
6158 * Decode LOOKUP response
6159 */
6160static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6161 void *data)
6162{
6163 struct nfs4_lookup_res *res = data;
6164 struct compound_hdr hdr;
6165 int status;
6166
6167 status = decode_compound_hdr(xdr, &hdr);
6168 if (status)
6169 goto out;
6170 status = decode_sequence(xdr, &res->seq_res, rqstp);
6171 if (status)
6172 goto out;
6173 status = decode_putfh(xdr);
6174 if (status)
6175 goto out;
6176 status = decode_lookup(xdr);
6177 if (status)
6178 goto out;
6179 status = decode_getfh(xdr, res->fh);
6180 if (status)
6181 goto out;
6182 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6183out:
6184 return status;
6185}
6186
6187/*
6188 * Decode LOOKUPP response
6189 */
6190static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6191 void *data)
6192{
6193 struct nfs4_lookupp_res *res = data;
6194 struct compound_hdr hdr;
6195 int status;
6196
6197 status = decode_compound_hdr(xdr, &hdr);
6198 if (status)
6199 goto out;
6200 status = decode_sequence(xdr, &res->seq_res, rqstp);
6201 if (status)
6202 goto out;
6203 status = decode_putfh(xdr);
6204 if (status)
6205 goto out;
6206 status = decode_lookupp(xdr);
6207 if (status)
6208 goto out;
6209 status = decode_getfh(xdr, res->fh);
6210 if (status)
6211 goto out;
6212 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6213out:
6214 return status;
6215}
6216
6217/*
6218 * Decode LOOKUP_ROOT response
6219 */
6220static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6221 struct xdr_stream *xdr,
6222 void *data)
6223{
6224 struct nfs4_lookup_res *res = data;
6225 struct compound_hdr hdr;
6226 int status;
6227
6228 status = decode_compound_hdr(xdr, &hdr);
6229 if (status)
6230 goto out;
6231 status = decode_sequence(xdr, &res->seq_res, rqstp);
6232 if (status)
6233 goto out;
6234 status = decode_putrootfh(xdr);
6235 if (status)
6236 goto out;
6237 status = decode_getfh(xdr, res->fh);
6238 if (status == 0)
6239 status = decode_getfattr_label(xdr, res->fattr,
6240 res->label, res->server);
6241out:
6242 return status;
6243}
6244
6245/*
6246 * Decode REMOVE response
6247 */
6248static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6249 void *data)
6250{
6251 struct nfs_removeres *res = data;
6252 struct compound_hdr hdr;
6253 int status;
6254
6255 status = decode_compound_hdr(xdr, &hdr);
6256 if (status)
6257 goto out;
6258 status = decode_sequence(xdr, &res->seq_res, rqstp);
6259 if (status)
6260 goto out;
6261 status = decode_putfh(xdr);
6262 if (status)
6263 goto out;
6264 status = decode_remove(xdr, &res->cinfo);
6265out:
6266 return status;
6267}
6268
6269/*
6270 * Decode RENAME response
6271 */
6272static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6273 void *data)
6274{
6275 struct nfs_renameres *res = data;
6276 struct compound_hdr hdr;
6277 int status;
6278
6279 status = decode_compound_hdr(xdr, &hdr);
6280 if (status)
6281 goto out;
6282 status = decode_sequence(xdr, &res->seq_res, rqstp);
6283 if (status)
6284 goto out;
6285 status = decode_putfh(xdr);
6286 if (status)
6287 goto out;
6288 status = decode_savefh(xdr);
6289 if (status)
6290 goto out;
6291 status = decode_putfh(xdr);
6292 if (status)
6293 goto out;
6294 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6295out:
6296 return status;
6297}
6298
6299/*
6300 * Decode LINK response
6301 */
6302static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6303 void *data)
6304{
6305 struct nfs4_link_res *res = data;
6306 struct compound_hdr hdr;
6307 int status;
6308
6309 status = decode_compound_hdr(xdr, &hdr);
6310 if (status)
6311 goto out;
6312 status = decode_sequence(xdr, &res->seq_res, rqstp);
6313 if (status)
6314 goto out;
6315 status = decode_putfh(xdr);
6316 if (status)
6317 goto out;
6318 status = decode_savefh(xdr);
6319 if (status)
6320 goto out;
6321 status = decode_putfh(xdr);
6322 if (status)
6323 goto out;
6324 status = decode_link(xdr, &res->cinfo);
6325 if (status)
6326 goto out;
6327 /*
6328 * Note order: OP_LINK leaves the directory as the current
6329 * filehandle.
6330 */
6331 status = decode_restorefh(xdr);
6332 if (status)
6333 goto out;
6334 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6335out:
6336 return status;
6337}
6338
6339/*
6340 * Decode CREATE response
6341 */
6342static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6343 void *data)
6344{
6345 struct nfs4_create_res *res = data;
6346 struct compound_hdr hdr;
6347 int status;
6348
6349 status = decode_compound_hdr(xdr, &hdr);
6350 if (status)
6351 goto out;
6352 status = decode_sequence(xdr, &res->seq_res, rqstp);
6353 if (status)
6354 goto out;
6355 status = decode_putfh(xdr);
6356 if (status)
6357 goto out;
6358 status = decode_create(xdr, &res->dir_cinfo);
6359 if (status)
6360 goto out;
6361 status = decode_getfh(xdr, res->fh);
6362 if (status)
6363 goto out;
6364 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6365out:
6366 return status;
6367}
6368
6369/*
6370 * Decode SYMLINK response
6371 */
6372static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6373 void *res)
6374{
6375 return nfs4_xdr_dec_create(rqstp, xdr, res);
6376}
6377
6378/*
6379 * Decode GETATTR response
6380 */
6381static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6382 void *data)
6383{
6384 struct nfs4_getattr_res *res = data;
6385 struct compound_hdr hdr;
6386 int status;
6387
6388 status = decode_compound_hdr(xdr, &hdr);
6389 if (status)
6390 goto out;
6391 status = decode_sequence(xdr, &res->seq_res, rqstp);
6392 if (status)
6393 goto out;
6394 status = decode_putfh(xdr);
6395 if (status)
6396 goto out;
6397 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6398out:
6399 return status;
6400}
6401
6402/*
6403 * Encode an SETACL request
6404 */
6405static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6406 const void *data)
6407{
6408 const struct nfs_setaclargs *args = data;
6409 struct compound_hdr hdr = {
6410 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6411 };
6412
6413 encode_compound_hdr(xdr, req, &hdr);
6414 encode_sequence(xdr, &args->seq_args, &hdr);
6415 encode_putfh(xdr, args->fh, &hdr);
6416 encode_setacl(xdr, args, &hdr);
6417 encode_nops(&hdr);
6418}
6419
6420/*
6421 * Decode SETACL response
6422 */
6423static int
6424nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6425 void *data)
6426{
6427 struct nfs_setaclres *res = data;
6428 struct compound_hdr hdr;
6429 int status;
6430
6431 status = decode_compound_hdr(xdr, &hdr);
6432 if (status)
6433 goto out;
6434 status = decode_sequence(xdr, &res->seq_res, rqstp);
6435 if (status)
6436 goto out;
6437 status = decode_putfh(xdr);
6438 if (status)
6439 goto out;
6440 status = decode_setattr(xdr);
6441out:
6442 return status;
6443}
6444
6445/*
6446 * Decode GETACL response
6447 */
6448static int
6449nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6450 void *data)
6451{
6452 struct nfs_getaclres *res = data;
6453 struct compound_hdr hdr;
6454 int status;
6455
6456 if (res->acl_scratch != NULL)
6457 xdr_set_scratch_page(xdr, res->acl_scratch);
6458 status = decode_compound_hdr(xdr, &hdr);
6459 if (status)
6460 goto out;
6461 status = decode_sequence(xdr, &res->seq_res, rqstp);
6462 if (status)
6463 goto out;
6464 status = decode_putfh(xdr);
6465 if (status)
6466 goto out;
6467 status = decode_getacl(xdr, rqstp, res);
6468
6469out:
6470 return status;
6471}
6472
6473/*
6474 * Decode CLOSE response
6475 */
6476static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6477 void *data)
6478{
6479 struct nfs_closeres *res = data;
6480 struct compound_hdr hdr;
6481 int status;
6482
6483 status = decode_compound_hdr(xdr, &hdr);
6484 if (status)
6485 goto out;
6486 status = decode_sequence(xdr, &res->seq_res, rqstp);
6487 if (status)
6488 goto out;
6489 status = decode_putfh(xdr);
6490 if (status)
6491 goto out;
6492 if (res->lr_res) {
6493 status = decode_layoutreturn(xdr, res->lr_res);
6494 res->lr_ret = status;
6495 if (status)
6496 goto out;
6497 }
6498 if (res->fattr != NULL) {
6499 status = decode_getfattr(xdr, res->fattr, res->server);
6500 if (status != 0)
6501 goto out;
6502 }
6503 status = decode_close(xdr, res);
6504out:
6505 return status;
6506}
6507
6508/*
6509 * Decode OPEN response
6510 */
6511static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6512 void *data)
6513{
6514 struct nfs_openres *res = data;
6515 struct compound_hdr hdr;
6516 int status;
6517
6518 status = decode_compound_hdr(xdr, &hdr);
6519 if (status)
6520 goto out;
6521 status = decode_sequence(xdr, &res->seq_res, rqstp);
6522 if (status)
6523 goto out;
6524 status = decode_putfh(xdr);
6525 if (status)
6526 goto out;
6527 status = decode_open(xdr, res);
6528 if (status)
6529 goto out;
6530 status = decode_getfh(xdr, &res->fh);
6531 if (status)
6532 goto out;
6533 if (res->access_request)
6534 decode_access(xdr, &res->access_supported, &res->access_result);
6535 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6536 if (res->lg_res)
6537 decode_layoutget(xdr, rqstp, res->lg_res);
6538out:
6539 return status;
6540}
6541
6542/*
6543 * Decode OPEN_CONFIRM response
6544 */
6545static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6546 struct xdr_stream *xdr,
6547 void *data)
6548{
6549 struct nfs_open_confirmres *res = data;
6550 struct compound_hdr hdr;
6551 int status;
6552
6553 status = decode_compound_hdr(xdr, &hdr);
6554 if (status)
6555 goto out;
6556 status = decode_putfh(xdr);
6557 if (status)
6558 goto out;
6559 status = decode_open_confirm(xdr, res);
6560out:
6561 return status;
6562}
6563
6564/*
6565 * Decode OPEN response
6566 */
6567static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6568 struct xdr_stream *xdr,
6569 void *data)
6570{
6571 struct nfs_openres *res = data;
6572 struct compound_hdr hdr;
6573 int status;
6574
6575 status = decode_compound_hdr(xdr, &hdr);
6576 if (status)
6577 goto out;
6578 status = decode_sequence(xdr, &res->seq_res, rqstp);
6579 if (status)
6580 goto out;
6581 status = decode_putfh(xdr);
6582 if (status)
6583 goto out;
6584 status = decode_open(xdr, res);
6585 if (status)
6586 goto out;
6587 if (res->access_request)
6588 decode_access(xdr, &res->access_supported, &res->access_result);
6589 decode_getfattr(xdr, res->f_attr, res->server);
6590 if (res->lg_res)
6591 decode_layoutget(xdr, rqstp, res->lg_res);
6592out:
6593 return status;
6594}
6595
6596/*
6597 * Decode SETATTR response
6598 */
6599static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6600 struct xdr_stream *xdr,
6601 void *data)
6602{
6603 struct nfs_setattrres *res = data;
6604 struct compound_hdr hdr;
6605 int status;
6606
6607 status = decode_compound_hdr(xdr, &hdr);
6608 if (status)
6609 goto out;
6610 status = decode_sequence(xdr, &res->seq_res, rqstp);
6611 if (status)
6612 goto out;
6613 status = decode_putfh(xdr);
6614 if (status)
6615 goto out;
6616 status = decode_setattr(xdr);
6617 if (status)
6618 goto out;
6619 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6620out:
6621 return status;
6622}
6623
6624/*
6625 * Decode LOCK response
6626 */
6627static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6628 void *data)
6629{
6630 struct nfs_lock_res *res = data;
6631 struct compound_hdr hdr;
6632 int status;
6633
6634 status = decode_compound_hdr(xdr, &hdr);
6635 if (status)
6636 goto out;
6637 status = decode_sequence(xdr, &res->seq_res, rqstp);
6638 if (status)
6639 goto out;
6640 status = decode_putfh(xdr);
6641 if (status)
6642 goto out;
6643 status = decode_lock(xdr, res);
6644out:
6645 return status;
6646}
6647
6648/*
6649 * Decode LOCKT response
6650 */
6651static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6652 void *data)
6653{
6654 struct nfs_lockt_res *res = data;
6655 struct compound_hdr hdr;
6656 int status;
6657
6658 status = decode_compound_hdr(xdr, &hdr);
6659 if (status)
6660 goto out;
6661 status = decode_sequence(xdr, &res->seq_res, rqstp);
6662 if (status)
6663 goto out;
6664 status = decode_putfh(xdr);
6665 if (status)
6666 goto out;
6667 status = decode_lockt(xdr, res);
6668out:
6669 return status;
6670}
6671
6672/*
6673 * Decode LOCKU response
6674 */
6675static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6676 void *data)
6677{
6678 struct nfs_locku_res *res = data;
6679 struct compound_hdr hdr;
6680 int status;
6681
6682 status = decode_compound_hdr(xdr, &hdr);
6683 if (status)
6684 goto out;
6685 status = decode_sequence(xdr, &res->seq_res, rqstp);
6686 if (status)
6687 goto out;
6688 status = decode_putfh(xdr);
6689 if (status)
6690 goto out;
6691 status = decode_locku(xdr, res);
6692out:
6693 return status;
6694}
6695
6696static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6697 struct xdr_stream *xdr, void *dummy)
6698{
6699 struct compound_hdr hdr;
6700 int status;
6701
6702 status = decode_compound_hdr(xdr, &hdr);
6703 if (!status)
6704 status = decode_release_lockowner(xdr);
6705 return status;
6706}
6707
6708/*
6709 * Decode READLINK response
6710 */
6711static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6712 struct xdr_stream *xdr,
6713 void *data)
6714{
6715 struct nfs4_readlink_res *res = data;
6716 struct compound_hdr hdr;
6717 int status;
6718
6719 status = decode_compound_hdr(xdr, &hdr);
6720 if (status)
6721 goto out;
6722 status = decode_sequence(xdr, &res->seq_res, rqstp);
6723 if (status)
6724 goto out;
6725 status = decode_putfh(xdr);
6726 if (status)
6727 goto out;
6728 status = decode_readlink(xdr, rqstp);
6729out:
6730 return status;
6731}
6732
6733/*
6734 * Decode READDIR response
6735 */
6736static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6737 void *data)
6738{
6739 struct nfs4_readdir_res *res = data;
6740 struct compound_hdr hdr;
6741 int status;
6742
6743 status = decode_compound_hdr(xdr, &hdr);
6744 if (status)
6745 goto out;
6746 status = decode_sequence(xdr, &res->seq_res, rqstp);
6747 if (status)
6748 goto out;
6749 status = decode_putfh(xdr);
6750 if (status)
6751 goto out;
6752 status = decode_readdir(xdr, rqstp, res);
6753out:
6754 return status;
6755}
6756
6757/*
6758 * Decode Read response
6759 */
6760static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6761 void *data)
6762{
6763 struct nfs_pgio_res *res = data;
6764 struct compound_hdr hdr;
6765 int status;
6766
6767 status = decode_compound_hdr(xdr, &hdr);
6768 res->op_status = hdr.status;
6769 if (status)
6770 goto out;
6771 status = decode_sequence(xdr, &res->seq_res, rqstp);
6772 if (status)
6773 goto out;
6774 status = decode_putfh(xdr);
6775 if (status)
6776 goto out;
6777 status = decode_read(xdr, rqstp, res);
6778 if (!status)
6779 status = res->count;
6780out:
6781 return status;
6782}
6783
6784/*
6785 * Decode WRITE response
6786 */
6787static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6788 void *data)
6789{
6790 struct nfs_pgio_res *res = data;
6791 struct compound_hdr hdr;
6792 int status;
6793
6794 status = decode_compound_hdr(xdr, &hdr);
6795 res->op_status = hdr.status;
6796 if (status)
6797 goto out;
6798 status = decode_sequence(xdr, &res->seq_res, rqstp);
6799 if (status)
6800 goto out;
6801 status = decode_putfh(xdr);
6802 if (status)
6803 goto out;
6804 status = decode_write(xdr, res);
6805 if (status)
6806 goto out;
6807 if (res->fattr)
6808 decode_getfattr(xdr, res->fattr, res->server);
6809 if (!status)
6810 status = res->count;
6811out:
6812 return status;
6813}
6814
6815/*
6816 * Decode COMMIT response
6817 */
6818static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6819 void *data)
6820{
6821 struct nfs_commitres *res = data;
6822 struct compound_hdr hdr;
6823 int status;
6824
6825 status = decode_compound_hdr(xdr, &hdr);
6826 res->op_status = hdr.status;
6827 if (status)
6828 goto out;
6829 status = decode_sequence(xdr, &res->seq_res, rqstp);
6830 if (status)
6831 goto out;
6832 status = decode_putfh(xdr);
6833 if (status)
6834 goto out;
6835 status = decode_commit(xdr, res);
6836out:
6837 return status;
6838}
6839
6840/*
6841 * Decode FSINFO response
6842 */
6843static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6844 void *data)
6845{
6846 struct nfs4_fsinfo_res *res = data;
6847 struct compound_hdr hdr;
6848 int status;
6849
6850 status = decode_compound_hdr(xdr, &hdr);
6851 if (!status)
6852 status = decode_sequence(xdr, &res->seq_res, req);
6853 if (!status)
6854 status = decode_putfh(xdr);
6855 if (!status)
6856 status = decode_fsinfo(xdr, res->fsinfo);
6857 return status;
6858}
6859
6860/*
6861 * Decode PATHCONF response
6862 */
6863static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6864 void *data)
6865{
6866 struct nfs4_pathconf_res *res = data;
6867 struct compound_hdr hdr;
6868 int status;
6869
6870 status = decode_compound_hdr(xdr, &hdr);
6871 if (!status)
6872 status = decode_sequence(xdr, &res->seq_res, req);
6873 if (!status)
6874 status = decode_putfh(xdr);
6875 if (!status)
6876 status = decode_pathconf(xdr, res->pathconf);
6877 return status;
6878}
6879
6880/*
6881 * Decode STATFS response
6882 */
6883static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6884 void *data)
6885{
6886 struct nfs4_statfs_res *res = data;
6887 struct compound_hdr hdr;
6888 int status;
6889
6890 status = decode_compound_hdr(xdr, &hdr);
6891 if (!status)
6892 status = decode_sequence(xdr, &res->seq_res, req);
6893 if (!status)
6894 status = decode_putfh(xdr);
6895 if (!status)
6896 status = decode_statfs(xdr, res->fsstat);
6897 return status;
6898}
6899
6900/*
6901 * Decode GETATTR_BITMAP response
6902 */
6903static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6904 struct xdr_stream *xdr,
6905 void *data)
6906{
6907 struct nfs4_server_caps_res *res = data;
6908 struct compound_hdr hdr;
6909 int status;
6910
6911 status = decode_compound_hdr(xdr, &hdr);
6912 if (status)
6913 goto out;
6914 status = decode_sequence(xdr, &res->seq_res, req);
6915 if (status)
6916 goto out;
6917 status = decode_putfh(xdr);
6918 if (status)
6919 goto out;
6920 status = decode_server_caps(xdr, res);
6921out:
6922 return status;
6923}
6924
6925/*
6926 * Decode RENEW response
6927 */
6928static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6929 void *__unused)
6930{
6931 struct compound_hdr hdr;
6932 int status;
6933
6934 status = decode_compound_hdr(xdr, &hdr);
6935 if (!status)
6936 status = decode_renew(xdr);
6937 return status;
6938}
6939
6940/*
6941 * Decode SETCLIENTID response
6942 */
6943static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6944 struct xdr_stream *xdr,
6945 void *data)
6946{
6947 struct nfs4_setclientid_res *res = data;
6948 struct compound_hdr hdr;
6949 int status;
6950
6951 status = decode_compound_hdr(xdr, &hdr);
6952 if (!status)
6953 status = decode_setclientid(xdr, res);
6954 return status;
6955}
6956
6957/*
6958 * Decode SETCLIENTID_CONFIRM response
6959 */
6960static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6961 struct xdr_stream *xdr,
6962 void *data)
6963{
6964 struct compound_hdr hdr;
6965 int status;
6966
6967 status = decode_compound_hdr(xdr, &hdr);
6968 if (!status)
6969 status = decode_setclientid_confirm(xdr);
6970 return status;
6971}
6972
6973/*
6974 * Decode DELEGRETURN response
6975 */
6976static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6977 struct xdr_stream *xdr,
6978 void *data)
6979{
6980 struct nfs4_delegreturnres *res = data;
6981 struct compound_hdr hdr;
6982 int status;
6983
6984 status = decode_compound_hdr(xdr, &hdr);
6985 if (status)
6986 goto out;
6987 status = decode_sequence(xdr, &res->seq_res, rqstp);
6988 if (status)
6989 goto out;
6990 status = decode_putfh(xdr);
6991 if (status != 0)
6992 goto out;
6993 if (res->lr_res) {
6994 status = decode_layoutreturn(xdr, res->lr_res);
6995 res->lr_ret = status;
6996 if (status)
6997 goto out;
6998 }
6999 if (res->fattr) {
7000 status = decode_getfattr(xdr, res->fattr, res->server);
7001 if (status != 0)
7002 goto out;
7003 }
7004 status = decode_delegreturn(xdr);
7005out:
7006 return status;
7007}
7008
7009/*
7010 * Decode FS_LOCATIONS response
7011 */
7012static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7013 struct xdr_stream *xdr,
7014 void *data)
7015{
7016 struct nfs4_fs_locations_res *res = data;
7017 struct compound_hdr hdr;
7018 int status;
7019
7020 status = decode_compound_hdr(xdr, &hdr);
7021 if (status)
7022 goto out;
7023 status = decode_sequence(xdr, &res->seq_res, req);
7024 if (status)
7025 goto out;
7026 status = decode_putfh(xdr);
7027 if (status)
7028 goto out;
7029 if (res->migration) {
7030 xdr_enter_page(xdr, PAGE_SIZE);
7031 status = decode_getfattr_generic(xdr,
7032 &res->fs_locations->fattr,
7033 NULL, res->fs_locations,
7034 NULL, res->fs_locations->server);
7035 if (status)
7036 goto out;
7037 if (res->renew)
7038 status = decode_renew(xdr);
7039 } else {
7040 status = decode_lookup(xdr);
7041 if (status)
7042 goto out;
7043 xdr_enter_page(xdr, PAGE_SIZE);
7044 status = decode_getfattr_generic(xdr,
7045 &res->fs_locations->fattr,
7046 NULL, res->fs_locations,
7047 NULL, res->fs_locations->server);
7048 }
7049out:
7050 return status;
7051}
7052
7053/*
7054 * Decode SECINFO response
7055 */
7056static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7057 struct xdr_stream *xdr,
7058 void *data)
7059{
7060 struct nfs4_secinfo_res *res = data;
7061 struct compound_hdr hdr;
7062 int status;
7063
7064 status = decode_compound_hdr(xdr, &hdr);
7065 if (status)
7066 goto out;
7067 status = decode_sequence(xdr, &res->seq_res, rqstp);
7068 if (status)
7069 goto out;
7070 status = decode_putfh(xdr);
7071 if (status)
7072 goto out;
7073 status = decode_secinfo(xdr, res);
7074out:
7075 return status;
7076}
7077
7078/*
7079 * Decode FSID_PRESENT response
7080 */
7081static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7082 struct xdr_stream *xdr,
7083 void *data)
7084{
7085 struct nfs4_fsid_present_res *res = data;
7086 struct compound_hdr hdr;
7087 int status;
7088
7089 status = decode_compound_hdr(xdr, &hdr);
7090 if (status)
7091 goto out;
7092 status = decode_sequence(xdr, &res->seq_res, rqstp);
7093 if (status)
7094 goto out;
7095 status = decode_putfh(xdr);
7096 if (status)
7097 goto out;
7098 status = decode_getfh(xdr, res->fh);
7099 if (status)
7100 goto out;
7101 if (res->renew)
7102 status = decode_renew(xdr);
7103out:
7104 return status;
7105}
7106
7107#if defined(CONFIG_NFS_V4_1)
7108/*
7109 * Decode BIND_CONN_TO_SESSION response
7110 */
7111static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7112 struct xdr_stream *xdr,
7113 void *res)
7114{
7115 struct compound_hdr hdr;
7116 int status;
7117
7118 status = decode_compound_hdr(xdr, &hdr);
7119 if (!status)
7120 status = decode_bind_conn_to_session(xdr, res);
7121 return status;
7122}
7123
7124/*
7125 * Decode EXCHANGE_ID response
7126 */
7127static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7128 struct xdr_stream *xdr,
7129 void *res)
7130{
7131 struct compound_hdr hdr;
7132 int status;
7133
7134 status = decode_compound_hdr(xdr, &hdr);
7135 if (!status)
7136 status = decode_exchange_id(xdr, res);
7137 return status;
7138}
7139
7140/*
7141 * Decode CREATE_SESSION response
7142 */
7143static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7144 struct xdr_stream *xdr,
7145 void *res)
7146{
7147 struct compound_hdr hdr;
7148 int status;
7149
7150 status = decode_compound_hdr(xdr, &hdr);
7151 if (!status)
7152 status = decode_create_session(xdr, res);
7153 return status;
7154}
7155
7156/*
7157 * Decode DESTROY_SESSION response
7158 */
7159static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7160 struct xdr_stream *xdr,
7161 void *res)
7162{
7163 struct compound_hdr hdr;
7164 int status;
7165
7166 status = decode_compound_hdr(xdr, &hdr);
7167 if (!status)
7168 status = decode_destroy_session(xdr, res);
7169 return status;
7170}
7171
7172/*
7173 * Decode DESTROY_CLIENTID response
7174 */
7175static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7176 struct xdr_stream *xdr,
7177 void *res)
7178{
7179 struct compound_hdr hdr;
7180 int status;
7181
7182 status = decode_compound_hdr(xdr, &hdr);
7183 if (!status)
7184 status = decode_destroy_clientid(xdr, res);
7185 return status;
7186}
7187
7188/*
7189 * Decode SEQUENCE response
7190 */
7191static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7192 struct xdr_stream *xdr,
7193 void *res)
7194{
7195 struct compound_hdr hdr;
7196 int status;
7197
7198 status = decode_compound_hdr(xdr, &hdr);
7199 if (!status)
7200 status = decode_sequence(xdr, res, rqstp);
7201 return status;
7202}
7203
7204#endif
7205
7206/*
7207 * Decode GET_LEASE_TIME response
7208 */
7209static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7210 struct xdr_stream *xdr,
7211 void *data)
7212{
7213 struct nfs4_get_lease_time_res *res = data;
7214 struct compound_hdr hdr;
7215 int status;
7216
7217 status = decode_compound_hdr(xdr, &hdr);
7218 if (!status)
7219 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7220 if (!status)
7221 status = decode_putrootfh(xdr);
7222 if (!status)
7223 status = decode_fsinfo(xdr, res->lr_fsinfo);
7224 return status;
7225}
7226
7227#ifdef CONFIG_NFS_V4_1
7228
7229/*
7230 * Decode RECLAIM_COMPLETE response
7231 */
7232static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7233 struct xdr_stream *xdr,
7234 void *data)
7235{
7236 struct nfs41_reclaim_complete_res *res = data;
7237 struct compound_hdr hdr;
7238 int status;
7239
7240 status = decode_compound_hdr(xdr, &hdr);
7241 if (!status)
7242 status = decode_sequence(xdr, &res->seq_res, rqstp);
7243 if (!status)
7244 status = decode_reclaim_complete(xdr, NULL);
7245 return status;
7246}
7247
7248/*
7249 * Decode GETDEVINFO response
7250 */
7251static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7252 struct xdr_stream *xdr,
7253 void *data)
7254{
7255 struct nfs4_getdeviceinfo_res *res = data;
7256 struct compound_hdr hdr;
7257 int status;
7258
7259 status = decode_compound_hdr(xdr, &hdr);
7260 if (status != 0)
7261 goto out;
7262 status = decode_sequence(xdr, &res->seq_res, rqstp);
7263 if (status != 0)
7264 goto out;
7265 status = decode_getdeviceinfo(xdr, res);
7266out:
7267 return status;
7268}
7269
7270/*
7271 * Decode LAYOUTGET response
7272 */
7273static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7274 struct xdr_stream *xdr,
7275 void *data)
7276{
7277 struct nfs4_layoutget_res *res = data;
7278 struct compound_hdr hdr;
7279 int status;
7280
7281 status = decode_compound_hdr(xdr, &hdr);
7282 if (status)
7283 goto out;
7284 status = decode_sequence(xdr, &res->seq_res, rqstp);
7285 if (status)
7286 goto out;
7287 status = decode_putfh(xdr);
7288 if (status)
7289 goto out;
7290 status = decode_layoutget(xdr, rqstp, res);
7291out:
7292 return status;
7293}
7294
7295/*
7296 * Decode LAYOUTRETURN response
7297 */
7298static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7299 struct xdr_stream *xdr,
7300 void *data)
7301{
7302 struct nfs4_layoutreturn_res *res = data;
7303 struct compound_hdr hdr;
7304 int status;
7305
7306 status = decode_compound_hdr(xdr, &hdr);
7307 if (status)
7308 goto out;
7309 status = decode_sequence(xdr, &res->seq_res, rqstp);
7310 if (status)
7311 goto out;
7312 status = decode_putfh(xdr);
7313 if (status)
7314 goto out;
7315 status = decode_layoutreturn(xdr, res);
7316out:
7317 return status;
7318}
7319
7320/*
7321 * Decode LAYOUTCOMMIT response
7322 */
7323static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7324 struct xdr_stream *xdr,
7325 void *data)
7326{
7327 struct nfs4_layoutcommit_res *res = data;
7328 struct compound_hdr hdr;
7329 int status;
7330
7331 status = decode_compound_hdr(xdr, &hdr);
7332 if (status)
7333 goto out;
7334 status = decode_sequence(xdr, &res->seq_res, rqstp);
7335 if (status)
7336 goto out;
7337 status = decode_putfh(xdr);
7338 if (status)
7339 goto out;
7340 status = decode_layoutcommit(xdr, rqstp, res);
7341 if (status)
7342 goto out;
7343 decode_getfattr(xdr, res->fattr, res->server);
7344out:
7345 return status;
7346}
7347
7348/*
7349 * Decode SECINFO_NO_NAME response
7350 */
7351static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7352 struct xdr_stream *xdr,
7353 void *data)
7354{
7355 struct nfs4_secinfo_res *res = data;
7356 struct compound_hdr hdr;
7357 int status;
7358
7359 status = decode_compound_hdr(xdr, &hdr);
7360 if (status)
7361 goto out;
7362 status = decode_sequence(xdr, &res->seq_res, rqstp);
7363 if (status)
7364 goto out;
7365 status = decode_putrootfh(xdr);
7366 if (status)
7367 goto out;
7368 status = decode_secinfo_no_name(xdr, res);
7369out:
7370 return status;
7371}
7372
7373/*
7374 * Decode TEST_STATEID response
7375 */
7376static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7377 struct xdr_stream *xdr,
7378 void *data)
7379{
7380 struct nfs41_test_stateid_res *res = data;
7381 struct compound_hdr hdr;
7382 int status;
7383
7384 status = decode_compound_hdr(xdr, &hdr);
7385 if (status)
7386 goto out;
7387 status = decode_sequence(xdr, &res->seq_res, rqstp);
7388 if (status)
7389 goto out;
7390 status = decode_test_stateid(xdr, res);
7391out:
7392 return status;
7393}
7394
7395/*
7396 * Decode FREE_STATEID response
7397 */
7398static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7399 struct xdr_stream *xdr,
7400 void *data)
7401{
7402 struct nfs41_free_stateid_res *res = data;
7403 struct compound_hdr hdr;
7404 int status;
7405
7406 status = decode_compound_hdr(xdr, &hdr);
7407 if (status)
7408 goto out;
7409 status = decode_sequence(xdr, &res->seq_res, rqstp);
7410 if (status)
7411 goto out;
7412 status = decode_free_stateid(xdr, res);
7413out:
7414 return status;
7415}
7416#endif /* CONFIG_NFS_V4_1 */
7417
7418/**
7419 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7420 * the local page cache.
7421 * @xdr: XDR stream where entry resides
7422 * @entry: buffer to fill in with entry data
7423 * @plus: boolean indicating whether this should be a readdirplus entry
7424 *
7425 * Returns zero if successful, otherwise a negative errno value is
7426 * returned.
7427 *
7428 * This function is not invoked during READDIR reply decoding, but
7429 * rather whenever an application invokes the getdents(2) system call
7430 * on a directory already in our cache.
7431 */
7432int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7433 bool plus)
7434{
7435 unsigned int savep;
7436 uint32_t bitmap[3] = {0};
7437 uint32_t len;
7438 uint64_t new_cookie;
7439 __be32 *p = xdr_inline_decode(xdr, 4);
7440 if (unlikely(!p))
7441 return -EAGAIN;
7442 if (*p == xdr_zero) {
7443 p = xdr_inline_decode(xdr, 4);
7444 if (unlikely(!p))
7445 return -EAGAIN;
7446 if (*p == xdr_zero)
7447 return -EAGAIN;
7448 entry->eof = 1;
7449 return -EBADCOOKIE;
7450 }
7451
7452 p = xdr_inline_decode(xdr, 12);
7453 if (unlikely(!p))
7454 return -EAGAIN;
7455 p = xdr_decode_hyper(p, &new_cookie);
7456 entry->len = be32_to_cpup(p);
7457
7458 p = xdr_inline_decode(xdr, entry->len);
7459 if (unlikely(!p))
7460 return -EAGAIN;
7461 entry->name = (const char *) p;
7462
7463 /*
7464 * In case the server doesn't return an inode number,
7465 * we fake one here. (We don't use inode number 0,
7466 * since glibc seems to choke on it...)
7467 */
7468 entry->ino = 1;
7469 entry->fattr->valid = 0;
7470
7471 if (decode_attr_bitmap(xdr, bitmap) < 0)
7472 return -EAGAIN;
7473
7474 if (decode_attr_length(xdr, &len, &savep) < 0)
7475 return -EAGAIN;
7476
7477 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7478 NULL, entry->label, entry->server) < 0)
7479 return -EAGAIN;
7480 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7481 entry->ino = entry->fattr->mounted_on_fileid;
7482 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7483 entry->ino = entry->fattr->fileid;
7484
7485 entry->d_type = DT_UNKNOWN;
7486 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7487 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7488
7489 entry->prev_cookie = entry->cookie;
7490 entry->cookie = new_cookie;
7491
7492 return 0;
7493}
7494
7495/*
7496 * We need to translate between nfs status return values and
7497 * the local errno values which may not be the same.
7498 */
7499static struct {
7500 int stat;
7501 int errno;
7502} nfs_errtbl[] = {
7503 { NFS4_OK, 0 },
7504 { NFS4ERR_PERM, -EPERM },
7505 { NFS4ERR_NOENT, -ENOENT },
7506 { NFS4ERR_IO, -errno_NFSERR_IO},
7507 { NFS4ERR_NXIO, -ENXIO },
7508 { NFS4ERR_ACCESS, -EACCES },
7509 { NFS4ERR_EXIST, -EEXIST },
7510 { NFS4ERR_XDEV, -EXDEV },
7511 { NFS4ERR_NOTDIR, -ENOTDIR },
7512 { NFS4ERR_ISDIR, -EISDIR },
7513 { NFS4ERR_INVAL, -EINVAL },
7514 { NFS4ERR_FBIG, -EFBIG },
7515 { NFS4ERR_NOSPC, -ENOSPC },
7516 { NFS4ERR_ROFS, -EROFS },
7517 { NFS4ERR_MLINK, -EMLINK },
7518 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7519 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7520 { NFS4ERR_DQUOT, -EDQUOT },
7521 { NFS4ERR_STALE, -ESTALE },
7522 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7523 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7524 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7525 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7526 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7527 { NFS4ERR_BADTYPE, -EBADTYPE },
7528 { NFS4ERR_LOCKED, -EAGAIN },
7529 { NFS4ERR_SYMLINK, -ELOOP },
7530 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7531 { NFS4ERR_DEADLOCK, -EDEADLK },
7532 { NFS4ERR_NOXATTR, -ENODATA },
7533 { NFS4ERR_XATTR2BIG, -E2BIG },
7534 { -1, -EIO }
7535};
7536
7537/*
7538 * Convert an NFS error code to a local one.
7539 * This one is used jointly by NFSv2 and NFSv3.
7540 */
7541static int
7542nfs4_stat_to_errno(int stat)
7543{
7544 int i;
7545 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7546 if (nfs_errtbl[i].stat == stat)
7547 return nfs_errtbl[i].errno;
7548 }
7549 if (stat <= 10000 || stat > 10100) {
7550 /* The server is looney tunes. */
7551 return -EREMOTEIO;
7552 }
7553 /* If we cannot translate the error, the recovery routines should
7554 * handle it.
7555 * Note: remaining NFSv4 error codes have values > 10000, so should
7556 * not conflict with native Linux error codes.
7557 */
7558 return -stat;
7559}
7560
7561#ifdef CONFIG_NFS_V4_2
7562#include "nfs42xdr.c"
7563#endif /* CONFIG_NFS_V4_2 */
7564
7565#define PROC(proc, argtype, restype) \
7566[NFSPROC4_CLNT_##proc] = { \
7567 .p_proc = NFSPROC4_COMPOUND, \
7568 .p_encode = nfs4_xdr_##argtype, \
7569 .p_decode = nfs4_xdr_##restype, \
7570 .p_arglen = NFS4_##argtype##_sz, \
7571 .p_replen = NFS4_##restype##_sz, \
7572 .p_statidx = NFSPROC4_CLNT_##proc, \
7573 .p_name = #proc, \
7574}
7575
7576#define STUB(proc) \
7577[NFSPROC4_CLNT_##proc] = { \
7578 .p_name = #proc, \
7579}
7580
7581#if defined(CONFIG_NFS_V4_1)
7582#define PROC41(proc, argtype, restype) \
7583 PROC(proc, argtype, restype)
7584#else
7585#define PROC41(proc, argtype, restype) \
7586 STUB(proc)
7587#endif
7588
7589#if defined(CONFIG_NFS_V4_2)
7590#define PROC42(proc, argtype, restype) \
7591 PROC(proc, argtype, restype)
7592#else
7593#define PROC42(proc, argtype, restype) \
7594 STUB(proc)
7595#endif
7596
7597const struct rpc_procinfo nfs4_procedures[] = {
7598 PROC(READ, enc_read, dec_read),
7599 PROC(WRITE, enc_write, dec_write),
7600 PROC(COMMIT, enc_commit, dec_commit),
7601 PROC(OPEN, enc_open, dec_open),
7602 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7603 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7604 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7605 PROC(CLOSE, enc_close, dec_close),
7606 PROC(SETATTR, enc_setattr, dec_setattr),
7607 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7608 PROC(RENEW, enc_renew, dec_renew),
7609 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7610 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7611 PROC(LOCK, enc_lock, dec_lock),
7612 PROC(LOCKT, enc_lockt, dec_lockt),
7613 PROC(LOCKU, enc_locku, dec_locku),
7614 PROC(ACCESS, enc_access, dec_access),
7615 PROC(GETATTR, enc_getattr, dec_getattr),
7616 PROC(LOOKUP, enc_lookup, dec_lookup),
7617 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7618 PROC(REMOVE, enc_remove, dec_remove),
7619 PROC(RENAME, enc_rename, dec_rename),
7620 PROC(LINK, enc_link, dec_link),
7621 PROC(SYMLINK, enc_symlink, dec_symlink),
7622 PROC(CREATE, enc_create, dec_create),
7623 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7624 PROC(STATFS, enc_statfs, dec_statfs),
7625 PROC(READLINK, enc_readlink, dec_readlink),
7626 PROC(READDIR, enc_readdir, dec_readdir),
7627 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7628 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7629 PROC(GETACL, enc_getacl, dec_getacl),
7630 PROC(SETACL, enc_setacl, dec_setacl),
7631 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7632 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7633 PROC(SECINFO, enc_secinfo, dec_secinfo),
7634 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7635 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7636 PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
7637 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7638 PROC41(SEQUENCE, enc_sequence, dec_sequence),
7639 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7640 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
7641 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7642 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),
7643 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7644 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7645 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7646 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7647 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7648 STUB(GETDEVICELIST),
7649 PROC41(BIND_CONN_TO_SESSION,
7650 enc_bind_conn_to_session, dec_bind_conn_to_session),
7651 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid),
7652 PROC42(SEEK, enc_seek, dec_seek),
7653 PROC42(ALLOCATE, enc_allocate, dec_allocate),
7654 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate),
7655 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7656 PROC42(CLONE, enc_clone, dec_clone),
7657 PROC42(COPY, enc_copy, dec_copy),
7658 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
7659 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify),
7660 PROC(LOOKUPP, enc_lookupp, dec_lookupp),
7661 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror),
7662 PROC42(GETXATTR, enc_getxattr, dec_getxattr),
7663 PROC42(SETXATTR, enc_setxattr, dec_setxattr),
7664 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs),
7665 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr),
7666 PROC42(READ_PLUS, enc_read_plus, dec_read_plus),
7667};
7668
7669static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7670const struct rpc_version nfs_version4 = {
7671 .number = 4,
7672 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7673 .procs = nfs4_procedures,
7674 .counts = nfs_version4_counts,
7675};