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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/sunrpc/clnt.h>
48#include <linux/sunrpc/msg_prot.h>
49#include <linux/sunrpc/gss_api.h>
50#include <linux/nfs.h>
51#include <linux/nfs4.h>
52#include <linux/nfs_fs.h>
53#include <linux/nfs_idmap.h>
54#include "nfs4_fs.h"
55#include "internal.h"
56#include "pnfs.h"
57
58#define NFSDBG_FACILITY NFSDBG_XDR
59
60/* Mapping from NFS error code to "errno" error code. */
61#define errno_NFSERR_IO EIO
62
63static int nfs4_stat_to_errno(int);
64
65/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
66#ifdef DEBUG
67#define NFS4_MAXTAGLEN 20
68#else
69#define NFS4_MAXTAGLEN 0
70#endif
71
72/* lock,open owner id:
73 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
74 */
75#define open_owner_id_maxsz (1 + 1 + 4)
76#define lock_owner_id_maxsz (1 + 1 + 4)
77#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
78#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
79#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
80#define op_encode_hdr_maxsz (1)
81#define op_decode_hdr_maxsz (2)
82#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
83#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
84#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
85#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
86#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
87 (NFS4_FHSIZE >> 2))
88#define decode_putfh_maxsz (op_decode_hdr_maxsz)
89#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
90#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
91#define encode_getfh_maxsz (op_encode_hdr_maxsz)
92#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
93 ((3+NFS4_FHSIZE) >> 2))
94#define nfs4_fattr_bitmap_maxsz 4
95#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
96#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
97#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
98#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
99#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
100/* This is based on getfattr, which uses the most attributes: */
101#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
102 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
103#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
104 nfs4_fattr_value_maxsz)
105#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
106#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
107 1 + 2 + 1 + \
108 nfs4_owner_maxsz + \
109 nfs4_group_maxsz + \
110 4 + 4)
111#define encode_savefh_maxsz (op_encode_hdr_maxsz)
112#define decode_savefh_maxsz (op_decode_hdr_maxsz)
113#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
114#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
115#define encode_fsinfo_maxsz (encode_getattr_maxsz)
116/* The 5 accounts for the PNFS attributes, and assumes that at most three
117 * layout types will be returned.
118 */
119#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
120 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
121#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
122#define decode_renew_maxsz (op_decode_hdr_maxsz)
123#define encode_setclientid_maxsz \
124 (op_encode_hdr_maxsz + \
125 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
126 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
127 1 /* sc_prog */ + \
128 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
129 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
130 1) /* sc_cb_ident */
131#define decode_setclientid_maxsz \
132 (op_decode_hdr_maxsz + \
133 2 + \
134 1024) /* large value for CLID_INUSE */
135#define encode_setclientid_confirm_maxsz \
136 (op_encode_hdr_maxsz + \
137 3 + (NFS4_VERIFIER_SIZE >> 2))
138#define decode_setclientid_confirm_maxsz \
139 (op_decode_hdr_maxsz)
140#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
141#define decode_lookup_maxsz (op_decode_hdr_maxsz)
142#define encode_share_access_maxsz \
143 (2)
144#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
145#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
146#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
147#define encode_open_maxsz (op_encode_hdr_maxsz + \
148 2 + encode_share_access_maxsz + 2 + \
149 open_owner_id_maxsz + \
150 encode_opentype_maxsz + \
151 encode_claim_null_maxsz)
152#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
153#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
154 decode_ace_maxsz)
155#define decode_change_info_maxsz (5)
156#define decode_open_maxsz (op_decode_hdr_maxsz + \
157 decode_stateid_maxsz + \
158 decode_change_info_maxsz + 1 + \
159 nfs4_fattr_bitmap_maxsz + \
160 decode_delegation_maxsz)
161#define encode_open_confirm_maxsz \
162 (op_encode_hdr_maxsz + \
163 encode_stateid_maxsz + 1)
164#define decode_open_confirm_maxsz \
165 (op_decode_hdr_maxsz + \
166 decode_stateid_maxsz)
167#define encode_open_downgrade_maxsz \
168 (op_encode_hdr_maxsz + \
169 encode_stateid_maxsz + 1 + \
170 encode_share_access_maxsz)
171#define decode_open_downgrade_maxsz \
172 (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz)
174#define encode_close_maxsz (op_encode_hdr_maxsz + \
175 1 + encode_stateid_maxsz)
176#define decode_close_maxsz (op_decode_hdr_maxsz + \
177 decode_stateid_maxsz)
178#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
179 encode_stateid_maxsz + \
180 encode_attrs_maxsz)
181#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
182 nfs4_fattr_bitmap_maxsz)
183#define encode_read_maxsz (op_encode_hdr_maxsz + \
184 encode_stateid_maxsz + 3)
185#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
186#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
187 2 + encode_verifier_maxsz + 5)
188#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
189 decode_verifier_maxsz)
190#define encode_readlink_maxsz (op_encode_hdr_maxsz)
191#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
192#define encode_write_maxsz (op_encode_hdr_maxsz + \
193 encode_stateid_maxsz + 4)
194#define decode_write_maxsz (op_decode_hdr_maxsz + \
195 2 + decode_verifier_maxsz)
196#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
197#define decode_commit_maxsz (op_decode_hdr_maxsz + \
198 decode_verifier_maxsz)
199#define encode_remove_maxsz (op_encode_hdr_maxsz + \
200 nfs4_name_maxsz)
201#define decode_remove_maxsz (op_decode_hdr_maxsz + \
202 decode_change_info_maxsz)
203#define encode_rename_maxsz (op_encode_hdr_maxsz + \
204 2 * nfs4_name_maxsz)
205#define decode_rename_maxsz (op_decode_hdr_maxsz + \
206 decode_change_info_maxsz + \
207 decode_change_info_maxsz)
208#define encode_link_maxsz (op_encode_hdr_maxsz + \
209 nfs4_name_maxsz)
210#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
211#define encode_lockowner_maxsz (7)
212#define encode_lock_maxsz (op_encode_hdr_maxsz + \
213 7 + \
214 1 + encode_stateid_maxsz + 1 + \
215 encode_lockowner_maxsz)
216#define decode_lock_denied_maxsz \
217 (8 + decode_lockowner_maxsz)
218#define decode_lock_maxsz (op_decode_hdr_maxsz + \
219 decode_lock_denied_maxsz)
220#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
221 encode_lockowner_maxsz)
222#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
223 decode_lock_denied_maxsz)
224#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
225 encode_stateid_maxsz + \
226 4)
227#define decode_locku_maxsz (op_decode_hdr_maxsz + \
228 decode_stateid_maxsz)
229#define encode_release_lockowner_maxsz \
230 (op_encode_hdr_maxsz + \
231 encode_lockowner_maxsz)
232#define decode_release_lockowner_maxsz \
233 (op_decode_hdr_maxsz)
234#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
235#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
236#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
237 1 + nfs4_name_maxsz + \
238 1 + \
239 nfs4_fattr_maxsz)
240#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
241#define encode_create_maxsz (op_encode_hdr_maxsz + \
242 1 + 2 + nfs4_name_maxsz + \
243 encode_attrs_maxsz)
244#define decode_create_maxsz (op_decode_hdr_maxsz + \
245 decode_change_info_maxsz + \
246 nfs4_fattr_bitmap_maxsz)
247#define encode_statfs_maxsz (encode_getattr_maxsz)
248#define decode_statfs_maxsz (decode_getattr_maxsz)
249#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
250#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
251#define encode_getacl_maxsz (encode_getattr_maxsz)
252#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
253 nfs4_fattr_bitmap_maxsz + 1)
254#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
255 encode_stateid_maxsz + 3)
256#define decode_setacl_maxsz (decode_setattr_maxsz)
257#define encode_fs_locations_maxsz \
258 (encode_getattr_maxsz)
259#define decode_fs_locations_maxsz \
260 (0)
261#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
262#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
263
264#if defined(CONFIG_NFS_V4_1)
265#define NFS4_MAX_MACHINE_NAME_LEN (64)
266
267#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
268 encode_verifier_maxsz + \
269 1 /* co_ownerid.len */ + \
270 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
271 1 /* flags */ + \
272 1 /* spa_how */ + \
273 0 /* SP4_NONE (for now) */ + \
274 1 /* zero implemetation id array */)
275#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
276 2 /* eir_clientid */ + \
277 1 /* eir_sequenceid */ + \
278 1 /* eir_flags */ + \
279 1 /* spr_how */ + \
280 0 /* SP4_NONE (for now) */ + \
281 2 /* eir_server_owner.so_minor_id */ + \
282 /* eir_server_owner.so_major_id<> */ \
283 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
284 /* eir_server_scope<> */ \
285 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
286 1 /* eir_server_impl_id array length */ + \
287 0 /* ignored eir_server_impl_id contents */)
288#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
289#define decode_channel_attrs_maxsz (6 + \
290 1 /* ca_rdma_ird.len */ + \
291 1 /* ca_rdma_ird */)
292#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
293 2 /* csa_clientid */ + \
294 1 /* csa_sequence */ + \
295 1 /* csa_flags */ + \
296 encode_channel_attrs_maxsz + \
297 encode_channel_attrs_maxsz + \
298 1 /* csa_cb_program */ + \
299 1 /* csa_sec_parms.len (1) */ + \
300 1 /* cb_secflavor (AUTH_SYS) */ + \
301 1 /* stamp */ + \
302 1 /* machinename.len */ + \
303 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
304 1 /* uid */ + \
305 1 /* gid */ + \
306 1 /* gids.len (0) */)
307#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
308 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
309 1 /* csr_sequence */ + \
310 1 /* csr_flags */ + \
311 decode_channel_attrs_maxsz + \
312 decode_channel_attrs_maxsz)
313#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
314#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
315#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
316 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
317#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
318 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
319#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
320#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
321#define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
322 encode_verifier_maxsz)
323#define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
324 2 /* nfs_cookie4 gdlr_cookie */ + \
325 decode_verifier_maxsz \
326 /* verifier4 gdlr_verifier */ + \
327 1 /* gdlr_deviceid_list count */ + \
328 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
329 NFS4_DEVICEID4_SIZE) \
330 /* gdlr_deviceid_list */ + \
331 1 /* bool gdlr_eof */)
332#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
333 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
334#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
335 1 /* layout type */ + \
336 1 /* opaque devaddr4 length */ + \
337 /* devaddr4 payload is read into page */ \
338 1 /* notification bitmap length */ + \
339 1 /* notification bitmap */)
340#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
341 encode_stateid_maxsz)
342#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
343 decode_stateid_maxsz + \
344 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
345#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
346 2 /* offset */ + \
347 2 /* length */ + \
348 1 /* reclaim */ + \
349 encode_stateid_maxsz + \
350 1 /* new offset (true) */ + \
351 2 /* last byte written */ + \
352 1 /* nt_timechanged (false) */ + \
353 1 /* layoutupdate4 layout type */ + \
354 1 /* NULL filelayout layoutupdate4 payload */)
355#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
356#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
357 encode_stateid_maxsz + \
358 1 /* FIXME: opaque lrf_body always empty at the moment */)
359#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
360 1 + decode_stateid_maxsz)
361#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
362#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
363#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
364 XDR_QUADLEN(NFS4_STATEID_SIZE))
365#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
366#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
367 XDR_QUADLEN(NFS4_STATEID_SIZE))
368#define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
369#else /* CONFIG_NFS_V4_1 */
370#define encode_sequence_maxsz 0
371#define decode_sequence_maxsz 0
372#endif /* CONFIG_NFS_V4_1 */
373
374#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
375#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
376#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
377 encode_sequence_maxsz + \
378 encode_putfh_maxsz + \
379 encode_read_maxsz)
380#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
381 decode_sequence_maxsz + \
382 decode_putfh_maxsz + \
383 decode_read_maxsz)
384#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
385 encode_sequence_maxsz + \
386 encode_putfh_maxsz + \
387 encode_readlink_maxsz)
388#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
389 decode_sequence_maxsz + \
390 decode_putfh_maxsz + \
391 decode_readlink_maxsz)
392#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
393 encode_sequence_maxsz + \
394 encode_putfh_maxsz + \
395 encode_readdir_maxsz)
396#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
397 decode_sequence_maxsz + \
398 decode_putfh_maxsz + \
399 decode_readdir_maxsz)
400#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
401 encode_sequence_maxsz + \
402 encode_putfh_maxsz + \
403 encode_write_maxsz + \
404 encode_getattr_maxsz)
405#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
406 decode_sequence_maxsz + \
407 decode_putfh_maxsz + \
408 decode_write_maxsz + \
409 decode_getattr_maxsz)
410#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
411 encode_sequence_maxsz + \
412 encode_putfh_maxsz + \
413 encode_commit_maxsz + \
414 encode_getattr_maxsz)
415#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
416 decode_sequence_maxsz + \
417 decode_putfh_maxsz + \
418 decode_commit_maxsz + \
419 decode_getattr_maxsz)
420#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
421 encode_sequence_maxsz + \
422 encode_putfh_maxsz + \
423 encode_savefh_maxsz + \
424 encode_open_maxsz + \
425 encode_getfh_maxsz + \
426 encode_getattr_maxsz + \
427 encode_restorefh_maxsz + \
428 encode_getattr_maxsz)
429#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
430 decode_sequence_maxsz + \
431 decode_putfh_maxsz + \
432 decode_savefh_maxsz + \
433 decode_open_maxsz + \
434 decode_getfh_maxsz + \
435 decode_getattr_maxsz + \
436 decode_restorefh_maxsz + \
437 decode_getattr_maxsz)
438#define NFS4_enc_open_confirm_sz \
439 (compound_encode_hdr_maxsz + \
440 encode_putfh_maxsz + \
441 encode_open_confirm_maxsz)
442#define NFS4_dec_open_confirm_sz \
443 (compound_decode_hdr_maxsz + \
444 decode_putfh_maxsz + \
445 decode_open_confirm_maxsz)
446#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
447 encode_sequence_maxsz + \
448 encode_putfh_maxsz + \
449 encode_open_maxsz + \
450 encode_getattr_maxsz)
451#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
452 decode_sequence_maxsz + \
453 decode_putfh_maxsz + \
454 decode_open_maxsz + \
455 decode_getattr_maxsz)
456#define NFS4_enc_open_downgrade_sz \
457 (compound_encode_hdr_maxsz + \
458 encode_sequence_maxsz + \
459 encode_putfh_maxsz + \
460 encode_open_downgrade_maxsz + \
461 encode_getattr_maxsz)
462#define NFS4_dec_open_downgrade_sz \
463 (compound_decode_hdr_maxsz + \
464 decode_sequence_maxsz + \
465 decode_putfh_maxsz + \
466 decode_open_downgrade_maxsz + \
467 decode_getattr_maxsz)
468#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
469 encode_sequence_maxsz + \
470 encode_putfh_maxsz + \
471 encode_close_maxsz + \
472 encode_getattr_maxsz)
473#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
474 decode_sequence_maxsz + \
475 decode_putfh_maxsz + \
476 decode_close_maxsz + \
477 decode_getattr_maxsz)
478#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
479 encode_sequence_maxsz + \
480 encode_putfh_maxsz + \
481 encode_setattr_maxsz + \
482 encode_getattr_maxsz)
483#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
484 decode_sequence_maxsz + \
485 decode_putfh_maxsz + \
486 decode_setattr_maxsz + \
487 decode_getattr_maxsz)
488#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
489 encode_sequence_maxsz + \
490 encode_putfh_maxsz + \
491 encode_fsinfo_maxsz)
492#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
493 decode_sequence_maxsz + \
494 decode_putfh_maxsz + \
495 decode_fsinfo_maxsz)
496#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
497 encode_renew_maxsz)
498#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
499 decode_renew_maxsz)
500#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
501 encode_setclientid_maxsz)
502#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
503 decode_setclientid_maxsz)
504#define NFS4_enc_setclientid_confirm_sz \
505 (compound_encode_hdr_maxsz + \
506 encode_setclientid_confirm_maxsz + \
507 encode_putrootfh_maxsz + \
508 encode_fsinfo_maxsz)
509#define NFS4_dec_setclientid_confirm_sz \
510 (compound_decode_hdr_maxsz + \
511 decode_setclientid_confirm_maxsz + \
512 decode_putrootfh_maxsz + \
513 decode_fsinfo_maxsz)
514#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
515 encode_sequence_maxsz + \
516 encode_putfh_maxsz + \
517 encode_lock_maxsz)
518#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
519 decode_sequence_maxsz + \
520 decode_putfh_maxsz + \
521 decode_lock_maxsz)
522#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
523 encode_sequence_maxsz + \
524 encode_putfh_maxsz + \
525 encode_lockt_maxsz)
526#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
527 decode_sequence_maxsz + \
528 decode_putfh_maxsz + \
529 decode_lockt_maxsz)
530#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
531 encode_sequence_maxsz + \
532 encode_putfh_maxsz + \
533 encode_locku_maxsz)
534#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
535 decode_sequence_maxsz + \
536 decode_putfh_maxsz + \
537 decode_locku_maxsz)
538#define NFS4_enc_release_lockowner_sz \
539 (compound_encode_hdr_maxsz + \
540 encode_lockowner_maxsz)
541#define NFS4_dec_release_lockowner_sz \
542 (compound_decode_hdr_maxsz + \
543 decode_lockowner_maxsz)
544#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
545 encode_sequence_maxsz + \
546 encode_putfh_maxsz + \
547 encode_access_maxsz + \
548 encode_getattr_maxsz)
549#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
550 decode_sequence_maxsz + \
551 decode_putfh_maxsz + \
552 decode_access_maxsz + \
553 decode_getattr_maxsz)
554#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
555 encode_sequence_maxsz + \
556 encode_putfh_maxsz + \
557 encode_getattr_maxsz)
558#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
559 decode_sequence_maxsz + \
560 decode_putfh_maxsz + \
561 decode_getattr_maxsz)
562#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
563 encode_sequence_maxsz + \
564 encode_putfh_maxsz + \
565 encode_lookup_maxsz + \
566 encode_getattr_maxsz + \
567 encode_getfh_maxsz)
568#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
569 decode_sequence_maxsz + \
570 decode_putfh_maxsz + \
571 decode_lookup_maxsz + \
572 decode_getattr_maxsz + \
573 decode_getfh_maxsz)
574#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
575 encode_sequence_maxsz + \
576 encode_putrootfh_maxsz + \
577 encode_getattr_maxsz + \
578 encode_getfh_maxsz)
579#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
580 decode_sequence_maxsz + \
581 decode_putrootfh_maxsz + \
582 decode_getattr_maxsz + \
583 decode_getfh_maxsz)
584#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
585 encode_sequence_maxsz + \
586 encode_putfh_maxsz + \
587 encode_remove_maxsz + \
588 encode_getattr_maxsz)
589#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
590 decode_sequence_maxsz + \
591 decode_putfh_maxsz + \
592 decode_remove_maxsz + \
593 decode_getattr_maxsz)
594#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
595 encode_sequence_maxsz + \
596 encode_putfh_maxsz + \
597 encode_savefh_maxsz + \
598 encode_putfh_maxsz + \
599 encode_rename_maxsz + \
600 encode_getattr_maxsz + \
601 encode_restorefh_maxsz + \
602 encode_getattr_maxsz)
603#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
604 decode_sequence_maxsz + \
605 decode_putfh_maxsz + \
606 decode_savefh_maxsz + \
607 decode_putfh_maxsz + \
608 decode_rename_maxsz + \
609 decode_getattr_maxsz + \
610 decode_restorefh_maxsz + \
611 decode_getattr_maxsz)
612#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
615 encode_savefh_maxsz + \
616 encode_putfh_maxsz + \
617 encode_link_maxsz + \
618 decode_getattr_maxsz + \
619 encode_restorefh_maxsz + \
620 decode_getattr_maxsz)
621#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
622 decode_sequence_maxsz + \
623 decode_putfh_maxsz + \
624 decode_savefh_maxsz + \
625 decode_putfh_maxsz + \
626 decode_link_maxsz + \
627 decode_getattr_maxsz + \
628 decode_restorefh_maxsz + \
629 decode_getattr_maxsz)
630#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
631 encode_sequence_maxsz + \
632 encode_putfh_maxsz + \
633 encode_symlink_maxsz + \
634 encode_getattr_maxsz + \
635 encode_getfh_maxsz)
636#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
637 decode_sequence_maxsz + \
638 decode_putfh_maxsz + \
639 decode_symlink_maxsz + \
640 decode_getattr_maxsz + \
641 decode_getfh_maxsz)
642#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
643 encode_sequence_maxsz + \
644 encode_putfh_maxsz + \
645 encode_savefh_maxsz + \
646 encode_create_maxsz + \
647 encode_getfh_maxsz + \
648 encode_getattr_maxsz + \
649 encode_restorefh_maxsz + \
650 encode_getattr_maxsz)
651#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
652 decode_sequence_maxsz + \
653 decode_putfh_maxsz + \
654 decode_savefh_maxsz + \
655 decode_create_maxsz + \
656 decode_getfh_maxsz + \
657 decode_getattr_maxsz + \
658 decode_restorefh_maxsz + \
659 decode_getattr_maxsz)
660#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
661 encode_sequence_maxsz + \
662 encode_putfh_maxsz + \
663 encode_getattr_maxsz)
664#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
665 decode_sequence_maxsz + \
666 decode_putfh_maxsz + \
667 decode_getattr_maxsz)
668#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
669 encode_sequence_maxsz + \
670 encode_putfh_maxsz + \
671 encode_statfs_maxsz)
672#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
673 decode_sequence_maxsz + \
674 decode_putfh_maxsz + \
675 decode_statfs_maxsz)
676#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
677 encode_sequence_maxsz + \
678 encode_putfh_maxsz + \
679 encode_getattr_maxsz)
680#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
681 decode_sequence_maxsz + \
682 decode_putfh_maxsz + \
683 decode_getattr_maxsz)
684#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
685 encode_sequence_maxsz + \
686 encode_putfh_maxsz + \
687 encode_delegreturn_maxsz + \
688 encode_getattr_maxsz)
689#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
690 decode_sequence_maxsz + \
691 decode_delegreturn_maxsz + \
692 decode_getattr_maxsz)
693#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
694 encode_sequence_maxsz + \
695 encode_putfh_maxsz + \
696 encode_getacl_maxsz)
697#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
698 decode_sequence_maxsz + \
699 decode_putfh_maxsz + \
700 decode_getacl_maxsz)
701#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
702 encode_sequence_maxsz + \
703 encode_putfh_maxsz + \
704 encode_setacl_maxsz)
705#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
706 decode_sequence_maxsz + \
707 decode_putfh_maxsz + \
708 decode_setacl_maxsz)
709#define NFS4_enc_fs_locations_sz \
710 (compound_encode_hdr_maxsz + \
711 encode_sequence_maxsz + \
712 encode_putfh_maxsz + \
713 encode_lookup_maxsz + \
714 encode_fs_locations_maxsz)
715#define NFS4_dec_fs_locations_sz \
716 (compound_decode_hdr_maxsz + \
717 decode_sequence_maxsz + \
718 decode_putfh_maxsz + \
719 decode_lookup_maxsz + \
720 decode_fs_locations_maxsz)
721#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
722 encode_sequence_maxsz + \
723 encode_putfh_maxsz + \
724 encode_secinfo_maxsz)
725#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
726 decode_sequence_maxsz + \
727 decode_putfh_maxsz + \
728 decode_secinfo_maxsz)
729#if defined(CONFIG_NFS_V4_1)
730#define NFS4_enc_exchange_id_sz \
731 (compound_encode_hdr_maxsz + \
732 encode_exchange_id_maxsz)
733#define NFS4_dec_exchange_id_sz \
734 (compound_decode_hdr_maxsz + \
735 decode_exchange_id_maxsz)
736#define NFS4_enc_create_session_sz \
737 (compound_encode_hdr_maxsz + \
738 encode_create_session_maxsz)
739#define NFS4_dec_create_session_sz \
740 (compound_decode_hdr_maxsz + \
741 decode_create_session_maxsz)
742#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
743 encode_destroy_session_maxsz)
744#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
745 decode_destroy_session_maxsz)
746#define NFS4_enc_sequence_sz \
747 (compound_decode_hdr_maxsz + \
748 encode_sequence_maxsz)
749#define NFS4_dec_sequence_sz \
750 (compound_decode_hdr_maxsz + \
751 decode_sequence_maxsz)
752#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
753 encode_sequence_maxsz + \
754 encode_putrootfh_maxsz + \
755 encode_fsinfo_maxsz)
756#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
757 decode_sequence_maxsz + \
758 decode_putrootfh_maxsz + \
759 decode_fsinfo_maxsz)
760#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
761 encode_sequence_maxsz + \
762 encode_reclaim_complete_maxsz)
763#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
764 decode_sequence_maxsz + \
765 decode_reclaim_complete_maxsz)
766#define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
767 encode_sequence_maxsz + \
768 encode_putfh_maxsz + \
769 encode_getdevicelist_maxsz)
770#define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
771 decode_sequence_maxsz + \
772 decode_putfh_maxsz + \
773 decode_getdevicelist_maxsz)
774#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
775 encode_sequence_maxsz +\
776 encode_getdeviceinfo_maxsz)
777#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_getdeviceinfo_maxsz)
780#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
781 encode_sequence_maxsz + \
782 encode_putfh_maxsz + \
783 encode_layoutget_maxsz)
784#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
785 decode_sequence_maxsz + \
786 decode_putfh_maxsz + \
787 decode_layoutget_maxsz)
788#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
789 encode_sequence_maxsz +\
790 encode_putfh_maxsz + \
791 encode_layoutcommit_maxsz + \
792 encode_getattr_maxsz)
793#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
794 decode_sequence_maxsz + \
795 decode_putfh_maxsz + \
796 decode_layoutcommit_maxsz + \
797 decode_getattr_maxsz)
798#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
799 encode_sequence_maxsz + \
800 encode_putfh_maxsz + \
801 encode_layoutreturn_maxsz)
802#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
803 decode_sequence_maxsz + \
804 decode_putfh_maxsz + \
805 decode_layoutreturn_maxsz)
806#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
807 encode_sequence_maxsz + \
808 encode_putrootfh_maxsz +\
809 encode_secinfo_no_name_maxsz)
810#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
811 decode_sequence_maxsz + \
812 decode_putrootfh_maxsz + \
813 decode_secinfo_no_name_maxsz)
814#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
815 encode_sequence_maxsz + \
816 encode_test_stateid_maxsz)
817#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
818 decode_sequence_maxsz + \
819 decode_test_stateid_maxsz)
820#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz + \
822 encode_free_stateid_maxsz)
823#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
824 decode_sequence_maxsz + \
825 decode_free_stateid_maxsz)
826
827const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
828 compound_encode_hdr_maxsz +
829 encode_sequence_maxsz +
830 encode_putfh_maxsz +
831 encode_getattr_maxsz) *
832 XDR_UNIT);
833
834const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
835 compound_decode_hdr_maxsz +
836 decode_sequence_maxsz +
837 decode_putfh_maxsz) *
838 XDR_UNIT);
839#endif /* CONFIG_NFS_V4_1 */
840
841static const umode_t nfs_type2fmt[] = {
842 [NF4BAD] = 0,
843 [NF4REG] = S_IFREG,
844 [NF4DIR] = S_IFDIR,
845 [NF4BLK] = S_IFBLK,
846 [NF4CHR] = S_IFCHR,
847 [NF4LNK] = S_IFLNK,
848 [NF4SOCK] = S_IFSOCK,
849 [NF4FIFO] = S_IFIFO,
850 [NF4ATTRDIR] = 0,
851 [NF4NAMEDATTR] = 0,
852};
853
854struct compound_hdr {
855 int32_t status;
856 uint32_t nops;
857 __be32 * nops_p;
858 uint32_t taglen;
859 char * tag;
860 uint32_t replen; /* expected reply words */
861 u32 minorversion;
862};
863
864static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
865{
866 __be32 *p = xdr_reserve_space(xdr, nbytes);
867 BUG_ON(!p);
868 return p;
869}
870
871static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
872{
873 __be32 *p;
874
875 p = xdr_reserve_space(xdr, 4 + len);
876 BUG_ON(p == NULL);
877 xdr_encode_opaque(p, str, len);
878}
879
880static void encode_compound_hdr(struct xdr_stream *xdr,
881 struct rpc_rqst *req,
882 struct compound_hdr *hdr)
883{
884 __be32 *p;
885 struct rpc_auth *auth = req->rq_cred->cr_auth;
886
887 /* initialize running count of expected bytes in reply.
888 * NOTE: the replied tag SHOULD be the same is the one sent,
889 * but this is not required as a MUST for the server to do so. */
890 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
891
892 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
893 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
894 p = reserve_space(xdr, 4 + hdr->taglen + 8);
895 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
896 *p++ = cpu_to_be32(hdr->minorversion);
897 hdr->nops_p = p;
898 *p = cpu_to_be32(hdr->nops);
899}
900
901static void encode_nops(struct compound_hdr *hdr)
902{
903 BUG_ON(hdr->nops > NFS4_MAX_OPS);
904 *hdr->nops_p = htonl(hdr->nops);
905}
906
907static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
908{
909 __be32 *p;
910
911 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
912 BUG_ON(p == NULL);
913 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
914}
915
916static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
917{
918 char owner_name[IDMAP_NAMESZ];
919 char owner_group[IDMAP_NAMESZ];
920 int owner_namelen = 0;
921 int owner_grouplen = 0;
922 __be32 *p;
923 __be32 *q;
924 int len;
925 uint32_t bmval0 = 0;
926 uint32_t bmval1 = 0;
927
928 /*
929 * We reserve enough space to write the entire attribute buffer at once.
930 * In the worst-case, this would be
931 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
932 * = 36 bytes, plus any contribution from variable-length fields
933 * such as owner/group.
934 */
935 len = 16;
936
937 /* Sigh */
938 if (iap->ia_valid & ATTR_SIZE)
939 len += 8;
940 if (iap->ia_valid & ATTR_MODE)
941 len += 4;
942 if (iap->ia_valid & ATTR_UID) {
943 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
944 if (owner_namelen < 0) {
945 dprintk("nfs: couldn't resolve uid %d to string\n",
946 iap->ia_uid);
947 /* XXX */
948 strcpy(owner_name, "nobody");
949 owner_namelen = sizeof("nobody") - 1;
950 /* goto out; */
951 }
952 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
953 }
954 if (iap->ia_valid & ATTR_GID) {
955 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
956 if (owner_grouplen < 0) {
957 dprintk("nfs: couldn't resolve gid %d to string\n",
958 iap->ia_gid);
959 strcpy(owner_group, "nobody");
960 owner_grouplen = sizeof("nobody") - 1;
961 /* goto out; */
962 }
963 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
964 }
965 if (iap->ia_valid & ATTR_ATIME_SET)
966 len += 16;
967 else if (iap->ia_valid & ATTR_ATIME)
968 len += 4;
969 if (iap->ia_valid & ATTR_MTIME_SET)
970 len += 16;
971 else if (iap->ia_valid & ATTR_MTIME)
972 len += 4;
973 p = reserve_space(xdr, len);
974
975 /*
976 * We write the bitmap length now, but leave the bitmap and the attribute
977 * buffer length to be backfilled at the end of this routine.
978 */
979 *p++ = cpu_to_be32(2);
980 q = p;
981 p += 3;
982
983 if (iap->ia_valid & ATTR_SIZE) {
984 bmval0 |= FATTR4_WORD0_SIZE;
985 p = xdr_encode_hyper(p, iap->ia_size);
986 }
987 if (iap->ia_valid & ATTR_MODE) {
988 bmval1 |= FATTR4_WORD1_MODE;
989 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
990 }
991 if (iap->ia_valid & ATTR_UID) {
992 bmval1 |= FATTR4_WORD1_OWNER;
993 p = xdr_encode_opaque(p, owner_name, owner_namelen);
994 }
995 if (iap->ia_valid & ATTR_GID) {
996 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
997 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
998 }
999 if (iap->ia_valid & ATTR_ATIME_SET) {
1000 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1001 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1002 *p++ = cpu_to_be32(0);
1003 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1004 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1005 }
1006 else if (iap->ia_valid & ATTR_ATIME) {
1007 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1008 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1009 }
1010 if (iap->ia_valid & ATTR_MTIME_SET) {
1011 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1012 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1013 *p++ = cpu_to_be32(0);
1014 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1015 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1016 }
1017 else if (iap->ia_valid & ATTR_MTIME) {
1018 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1019 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1020 }
1021
1022 /*
1023 * Now we backfill the bitmap and the attribute buffer length.
1024 */
1025 if (len != ((char *)p - (char *)q) + 4) {
1026 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
1027 len, ((char *)p - (char *)q) + 4);
1028 BUG();
1029 }
1030 len = (char *)p - (char *)q - 12;
1031 *q++ = htonl(bmval0);
1032 *q++ = htonl(bmval1);
1033 *q = htonl(len);
1034
1035/* out: */
1036}
1037
1038static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1039{
1040 __be32 *p;
1041
1042 p = reserve_space(xdr, 8);
1043 *p++ = cpu_to_be32(OP_ACCESS);
1044 *p = cpu_to_be32(access);
1045 hdr->nops++;
1046 hdr->replen += decode_access_maxsz;
1047}
1048
1049static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1050{
1051 __be32 *p;
1052
1053 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
1054 *p++ = cpu_to_be32(OP_CLOSE);
1055 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1056 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1057 hdr->nops++;
1058 hdr->replen += decode_close_maxsz;
1059}
1060
1061static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1062{
1063 __be32 *p;
1064
1065 p = reserve_space(xdr, 16);
1066 *p++ = cpu_to_be32(OP_COMMIT);
1067 p = xdr_encode_hyper(p, args->offset);
1068 *p = cpu_to_be32(args->count);
1069 hdr->nops++;
1070 hdr->replen += decode_commit_maxsz;
1071}
1072
1073static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1074{
1075 __be32 *p;
1076
1077 p = reserve_space(xdr, 8);
1078 *p++ = cpu_to_be32(OP_CREATE);
1079 *p = cpu_to_be32(create->ftype);
1080
1081 switch (create->ftype) {
1082 case NF4LNK:
1083 p = reserve_space(xdr, 4);
1084 *p = cpu_to_be32(create->u.symlink.len);
1085 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1086 break;
1087
1088 case NF4BLK: case NF4CHR:
1089 p = reserve_space(xdr, 8);
1090 *p++ = cpu_to_be32(create->u.device.specdata1);
1091 *p = cpu_to_be32(create->u.device.specdata2);
1092 break;
1093
1094 default:
1095 break;
1096 }
1097
1098 encode_string(xdr, create->name->len, create->name->name);
1099 hdr->nops++;
1100 hdr->replen += decode_create_maxsz;
1101
1102 encode_attrs(xdr, create->attrs, create->server);
1103}
1104
1105static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1106{
1107 __be32 *p;
1108
1109 p = reserve_space(xdr, 12);
1110 *p++ = cpu_to_be32(OP_GETATTR);
1111 *p++ = cpu_to_be32(1);
1112 *p = cpu_to_be32(bitmap);
1113 hdr->nops++;
1114 hdr->replen += decode_getattr_maxsz;
1115}
1116
1117static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1118{
1119 __be32 *p;
1120
1121 p = reserve_space(xdr, 16);
1122 *p++ = cpu_to_be32(OP_GETATTR);
1123 *p++ = cpu_to_be32(2);
1124 *p++ = cpu_to_be32(bm0);
1125 *p = cpu_to_be32(bm1);
1126 hdr->nops++;
1127 hdr->replen += decode_getattr_maxsz;
1128}
1129
1130static void
1131encode_getattr_three(struct xdr_stream *xdr,
1132 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1133 struct compound_hdr *hdr)
1134{
1135 __be32 *p;
1136
1137 p = reserve_space(xdr, 4);
1138 *p = cpu_to_be32(OP_GETATTR);
1139 if (bm2) {
1140 p = reserve_space(xdr, 16);
1141 *p++ = cpu_to_be32(3);
1142 *p++ = cpu_to_be32(bm0);
1143 *p++ = cpu_to_be32(bm1);
1144 *p = cpu_to_be32(bm2);
1145 } else if (bm1) {
1146 p = reserve_space(xdr, 12);
1147 *p++ = cpu_to_be32(2);
1148 *p++ = cpu_to_be32(bm0);
1149 *p = cpu_to_be32(bm1);
1150 } else {
1151 p = reserve_space(xdr, 8);
1152 *p++ = cpu_to_be32(1);
1153 *p = cpu_to_be32(bm0);
1154 }
1155 hdr->nops++;
1156 hdr->replen += decode_getattr_maxsz;
1157}
1158
1159static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1160{
1161 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1162 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1163}
1164
1165static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1166{
1167 encode_getattr_three(xdr,
1168 bitmask[0] & nfs4_fsinfo_bitmap[0],
1169 bitmask[1] & nfs4_fsinfo_bitmap[1],
1170 bitmask[2] & nfs4_fsinfo_bitmap[2],
1171 hdr);
1172}
1173
1174static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1175{
1176 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1177 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1178}
1179
1180static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1181{
1182 __be32 *p;
1183
1184 p = reserve_space(xdr, 4);
1185 *p = cpu_to_be32(OP_GETFH);
1186 hdr->nops++;
1187 hdr->replen += decode_getfh_maxsz;
1188}
1189
1190static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1191{
1192 __be32 *p;
1193
1194 p = reserve_space(xdr, 8 + name->len);
1195 *p++ = cpu_to_be32(OP_LINK);
1196 xdr_encode_opaque(p, name->name, name->len);
1197 hdr->nops++;
1198 hdr->replen += decode_link_maxsz;
1199}
1200
1201static inline int nfs4_lock_type(struct file_lock *fl, int block)
1202{
1203 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1204 return block ? NFS4_READW_LT : NFS4_READ_LT;
1205 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1206}
1207
1208static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1209{
1210 if (fl->fl_end == OFFSET_MAX)
1211 return ~(uint64_t)0;
1212 return fl->fl_end - fl->fl_start + 1;
1213}
1214
1215static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1216{
1217 __be32 *p;
1218
1219 p = reserve_space(xdr, 32);
1220 p = xdr_encode_hyper(p, lowner->clientid);
1221 *p++ = cpu_to_be32(20);
1222 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1223 *p++ = cpu_to_be32(lowner->s_dev);
1224 xdr_encode_hyper(p, lowner->id);
1225}
1226
1227/*
1228 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1229 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1230 */
1231static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1232{
1233 __be32 *p;
1234
1235 p = reserve_space(xdr, 32);
1236 *p++ = cpu_to_be32(OP_LOCK);
1237 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1238 *p++ = cpu_to_be32(args->reclaim);
1239 p = xdr_encode_hyper(p, args->fl->fl_start);
1240 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1241 *p = cpu_to_be32(args->new_lock_owner);
1242 if (args->new_lock_owner){
1243 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1244 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1245 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1246 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1247 encode_lockowner(xdr, &args->lock_owner);
1248 }
1249 else {
1250 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1251 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1252 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1253 }
1254 hdr->nops++;
1255 hdr->replen += decode_lock_maxsz;
1256}
1257
1258static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1259{
1260 __be32 *p;
1261
1262 p = reserve_space(xdr, 24);
1263 *p++ = cpu_to_be32(OP_LOCKT);
1264 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1265 p = xdr_encode_hyper(p, args->fl->fl_start);
1266 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1267 encode_lockowner(xdr, &args->lock_owner);
1268 hdr->nops++;
1269 hdr->replen += decode_lockt_maxsz;
1270}
1271
1272static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1273{
1274 __be32 *p;
1275
1276 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1277 *p++ = cpu_to_be32(OP_LOCKU);
1278 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1279 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1280 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1281 p = xdr_encode_hyper(p, args->fl->fl_start);
1282 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1283 hdr->nops++;
1284 hdr->replen += decode_locku_maxsz;
1285}
1286
1287static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1288{
1289 __be32 *p;
1290
1291 p = reserve_space(xdr, 4);
1292 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1293 encode_lockowner(xdr, lowner);
1294 hdr->nops++;
1295 hdr->replen += decode_release_lockowner_maxsz;
1296}
1297
1298static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1299{
1300 int len = name->len;
1301 __be32 *p;
1302
1303 p = reserve_space(xdr, 8 + len);
1304 *p++ = cpu_to_be32(OP_LOOKUP);
1305 xdr_encode_opaque(p, name->name, len);
1306 hdr->nops++;
1307 hdr->replen += decode_lookup_maxsz;
1308}
1309
1310static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1311{
1312 __be32 *p;
1313
1314 p = reserve_space(xdr, 8);
1315 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1316 case FMODE_READ:
1317 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1318 break;
1319 case FMODE_WRITE:
1320 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1321 break;
1322 case FMODE_READ|FMODE_WRITE:
1323 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1324 break;
1325 default:
1326 *p++ = cpu_to_be32(0);
1327 }
1328 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1329}
1330
1331static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1332{
1333 __be32 *p;
1334 /*
1335 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1336 * owner 4 = 32
1337 */
1338 p = reserve_space(xdr, 8);
1339 *p++ = cpu_to_be32(OP_OPEN);
1340 *p = cpu_to_be32(arg->seqid->sequence->counter);
1341 encode_share_access(xdr, arg->fmode);
1342 p = reserve_space(xdr, 32);
1343 p = xdr_encode_hyper(p, arg->clientid);
1344 *p++ = cpu_to_be32(20);
1345 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1346 *p++ = cpu_to_be32(arg->server->s_dev);
1347 xdr_encode_hyper(p, arg->id);
1348}
1349
1350static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1351{
1352 __be32 *p;
1353 struct nfs_client *clp;
1354
1355 p = reserve_space(xdr, 4);
1356 switch(arg->open_flags & O_EXCL) {
1357 case 0:
1358 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1359 encode_attrs(xdr, arg->u.attrs, arg->server);
1360 break;
1361 default:
1362 clp = arg->server->nfs_client;
1363 if (clp->cl_mvops->minor_version > 0) {
1364 if (nfs4_has_persistent_session(clp)) {
1365 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1366 encode_attrs(xdr, arg->u.attrs, arg->server);
1367 } else {
1368 struct iattr dummy;
1369
1370 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1371 encode_nfs4_verifier(xdr, &arg->u.verifier);
1372 dummy.ia_valid = 0;
1373 encode_attrs(xdr, &dummy, arg->server);
1374 }
1375 } else {
1376 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1377 encode_nfs4_verifier(xdr, &arg->u.verifier);
1378 }
1379 }
1380}
1381
1382static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1383{
1384 __be32 *p;
1385
1386 p = reserve_space(xdr, 4);
1387 switch (arg->open_flags & O_CREAT) {
1388 case 0:
1389 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1390 break;
1391 default:
1392 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1393 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1394 encode_createmode(xdr, arg);
1395 }
1396}
1397
1398static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1399{
1400 __be32 *p;
1401
1402 p = reserve_space(xdr, 4);
1403 switch (delegation_type) {
1404 case 0:
1405 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1406 break;
1407 case FMODE_READ:
1408 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1409 break;
1410 case FMODE_WRITE|FMODE_READ:
1411 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1412 break;
1413 default:
1414 BUG();
1415 }
1416}
1417
1418static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1419{
1420 __be32 *p;
1421
1422 p = reserve_space(xdr, 4);
1423 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1424 encode_string(xdr, name->len, name->name);
1425}
1426
1427static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1428{
1429 __be32 *p;
1430
1431 p = reserve_space(xdr, 4);
1432 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1433 encode_delegation_type(xdr, type);
1434}
1435
1436static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1437{
1438 __be32 *p;
1439
1440 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1441 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1442 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1443 encode_string(xdr, name->len, name->name);
1444}
1445
1446static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1447{
1448 encode_openhdr(xdr, arg);
1449 encode_opentype(xdr, arg);
1450 switch (arg->claim) {
1451 case NFS4_OPEN_CLAIM_NULL:
1452 encode_claim_null(xdr, arg->name);
1453 break;
1454 case NFS4_OPEN_CLAIM_PREVIOUS:
1455 encode_claim_previous(xdr, arg->u.delegation_type);
1456 break;
1457 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1458 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1459 break;
1460 default:
1461 BUG();
1462 }
1463 hdr->nops++;
1464 hdr->replen += decode_open_maxsz;
1465}
1466
1467static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1468{
1469 __be32 *p;
1470
1471 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1472 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1473 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1474 *p = cpu_to_be32(arg->seqid->sequence->counter);
1475 hdr->nops++;
1476 hdr->replen += decode_open_confirm_maxsz;
1477}
1478
1479static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1480{
1481 __be32 *p;
1482
1483 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1484 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1485 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1486 *p = cpu_to_be32(arg->seqid->sequence->counter);
1487 encode_share_access(xdr, arg->fmode);
1488 hdr->nops++;
1489 hdr->replen += decode_open_downgrade_maxsz;
1490}
1491
1492static void
1493encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1494{
1495 int len = fh->size;
1496 __be32 *p;
1497
1498 p = reserve_space(xdr, 8 + len);
1499 *p++ = cpu_to_be32(OP_PUTFH);
1500 xdr_encode_opaque(p, fh->data, len);
1501 hdr->nops++;
1502 hdr->replen += decode_putfh_maxsz;
1503}
1504
1505static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1506{
1507 __be32 *p;
1508
1509 p = reserve_space(xdr, 4);
1510 *p = cpu_to_be32(OP_PUTROOTFH);
1511 hdr->nops++;
1512 hdr->replen += decode_putrootfh_maxsz;
1513}
1514
1515static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid)
1516{
1517 nfs4_stateid stateid;
1518 __be32 *p;
1519
1520 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1521 if (ctx->state != NULL) {
1522 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
1523 if (zero_seqid)
1524 stateid.stateid.seqid = 0;
1525 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1526 } else
1527 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1528}
1529
1530static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1531{
1532 __be32 *p;
1533
1534 p = reserve_space(xdr, 4);
1535 *p = cpu_to_be32(OP_READ);
1536
1537 encode_stateid(xdr, args->context, args->lock_context,
1538 hdr->minorversion);
1539
1540 p = reserve_space(xdr, 12);
1541 p = xdr_encode_hyper(p, args->offset);
1542 *p = cpu_to_be32(args->count);
1543 hdr->nops++;
1544 hdr->replen += decode_read_maxsz;
1545}
1546
1547static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1548{
1549 uint32_t attrs[2] = {
1550 FATTR4_WORD0_RDATTR_ERROR,
1551 FATTR4_WORD1_MOUNTED_ON_FILEID,
1552 };
1553 uint32_t dircount = readdir->count >> 1;
1554 __be32 *p;
1555
1556 if (readdir->plus) {
1557 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1558 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1559 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1560 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1561 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1562 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1563 dircount >>= 1;
1564 }
1565 /* Use mounted_on_fileid only if the server supports it */
1566 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1567 attrs[0] |= FATTR4_WORD0_FILEID;
1568
1569 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1570 *p++ = cpu_to_be32(OP_READDIR);
1571 p = xdr_encode_hyper(p, readdir->cookie);
1572 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1573 *p++ = cpu_to_be32(dircount);
1574 *p++ = cpu_to_be32(readdir->count);
1575 *p++ = cpu_to_be32(2);
1576
1577 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1578 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1579 hdr->nops++;
1580 hdr->replen += decode_readdir_maxsz;
1581 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1582 __func__,
1583 (unsigned long long)readdir->cookie,
1584 ((u32 *)readdir->verifier.data)[0],
1585 ((u32 *)readdir->verifier.data)[1],
1586 attrs[0] & readdir->bitmask[0],
1587 attrs[1] & readdir->bitmask[1]);
1588}
1589
1590static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1591{
1592 __be32 *p;
1593
1594 p = reserve_space(xdr, 4);
1595 *p = cpu_to_be32(OP_READLINK);
1596 hdr->nops++;
1597 hdr->replen += decode_readlink_maxsz;
1598}
1599
1600static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1601{
1602 __be32 *p;
1603
1604 p = reserve_space(xdr, 8 + name->len);
1605 *p++ = cpu_to_be32(OP_REMOVE);
1606 xdr_encode_opaque(p, name->name, name->len);
1607 hdr->nops++;
1608 hdr->replen += decode_remove_maxsz;
1609}
1610
1611static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1612{
1613 __be32 *p;
1614
1615 p = reserve_space(xdr, 4);
1616 *p = cpu_to_be32(OP_RENAME);
1617 encode_string(xdr, oldname->len, oldname->name);
1618 encode_string(xdr, newname->len, newname->name);
1619 hdr->nops++;
1620 hdr->replen += decode_rename_maxsz;
1621}
1622
1623static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1624{
1625 __be32 *p;
1626
1627 p = reserve_space(xdr, 12);
1628 *p++ = cpu_to_be32(OP_RENEW);
1629 xdr_encode_hyper(p, client_stateid->cl_clientid);
1630 hdr->nops++;
1631 hdr->replen += decode_renew_maxsz;
1632}
1633
1634static void
1635encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1636{
1637 __be32 *p;
1638
1639 p = reserve_space(xdr, 4);
1640 *p = cpu_to_be32(OP_RESTOREFH);
1641 hdr->nops++;
1642 hdr->replen += decode_restorefh_maxsz;
1643}
1644
1645static void
1646encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1647{
1648 __be32 *p;
1649
1650 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1651 *p++ = cpu_to_be32(OP_SETATTR);
1652 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1653 p = reserve_space(xdr, 2*4);
1654 *p++ = cpu_to_be32(1);
1655 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1656 BUG_ON(arg->acl_len % 4);
1657 p = reserve_space(xdr, 4);
1658 *p = cpu_to_be32(arg->acl_len);
1659 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1660 hdr->nops++;
1661 hdr->replen += decode_setacl_maxsz;
1662}
1663
1664static void
1665encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1666{
1667 __be32 *p;
1668
1669 p = reserve_space(xdr, 4);
1670 *p = cpu_to_be32(OP_SAVEFH);
1671 hdr->nops++;
1672 hdr->replen += decode_savefh_maxsz;
1673}
1674
1675static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1676{
1677 __be32 *p;
1678
1679 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1680 *p++ = cpu_to_be32(OP_SETATTR);
1681 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1682 hdr->nops++;
1683 hdr->replen += decode_setattr_maxsz;
1684 encode_attrs(xdr, arg->iap, server);
1685}
1686
1687static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1688{
1689 __be32 *p;
1690
1691 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1692 *p++ = cpu_to_be32(OP_SETCLIENTID);
1693 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1694
1695 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1696 p = reserve_space(xdr, 4);
1697 *p = cpu_to_be32(setclientid->sc_prog);
1698 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1699 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1700 p = reserve_space(xdr, 4);
1701 *p = cpu_to_be32(setclientid->sc_cb_ident);
1702 hdr->nops++;
1703 hdr->replen += decode_setclientid_maxsz;
1704}
1705
1706static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1707{
1708 __be32 *p;
1709
1710 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1711 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1712 p = xdr_encode_hyper(p, arg->clientid);
1713 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
1714 hdr->nops++;
1715 hdr->replen += decode_setclientid_confirm_maxsz;
1716}
1717
1718static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1719{
1720 __be32 *p;
1721
1722 p = reserve_space(xdr, 4);
1723 *p = cpu_to_be32(OP_WRITE);
1724
1725 encode_stateid(xdr, args->context, args->lock_context,
1726 hdr->minorversion);
1727
1728 p = reserve_space(xdr, 16);
1729 p = xdr_encode_hyper(p, args->offset);
1730 *p++ = cpu_to_be32(args->stable);
1731 *p = cpu_to_be32(args->count);
1732
1733 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1734 hdr->nops++;
1735 hdr->replen += decode_write_maxsz;
1736}
1737
1738static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1739{
1740 __be32 *p;
1741
1742 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1743
1744 *p++ = cpu_to_be32(OP_DELEGRETURN);
1745 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1746 hdr->nops++;
1747 hdr->replen += decode_delegreturn_maxsz;
1748}
1749
1750static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1751{
1752 int len = name->len;
1753 __be32 *p;
1754
1755 p = reserve_space(xdr, 8 + len);
1756 *p++ = cpu_to_be32(OP_SECINFO);
1757 xdr_encode_opaque(p, name->name, len);
1758 hdr->nops++;
1759 hdr->replen += decode_secinfo_maxsz;
1760}
1761
1762#if defined(CONFIG_NFS_V4_1)
1763/* NFSv4.1 operations */
1764static void encode_exchange_id(struct xdr_stream *xdr,
1765 struct nfs41_exchange_id_args *args,
1766 struct compound_hdr *hdr)
1767{
1768 __be32 *p;
1769
1770 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1771 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1772 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1773
1774 encode_string(xdr, args->id_len, args->id);
1775
1776 p = reserve_space(xdr, 12);
1777 *p++ = cpu_to_be32(args->flags);
1778 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1779 *p = cpu_to_be32(0); /* zero length implementation id array */
1780 hdr->nops++;
1781 hdr->replen += decode_exchange_id_maxsz;
1782}
1783
1784static void encode_create_session(struct xdr_stream *xdr,
1785 struct nfs41_create_session_args *args,
1786 struct compound_hdr *hdr)
1787{
1788 __be32 *p;
1789 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1790 uint32_t len;
1791 struct nfs_client *clp = args->client;
1792 u32 max_resp_sz_cached;
1793
1794 /*
1795 * Assumes OPEN is the biggest non-idempotent compound.
1796 * 2 is the verifier.
1797 */
1798 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1799 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1800
1801 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1802 clp->cl_ipaddr);
1803
1804 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1805 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1806 p = xdr_encode_hyper(p, clp->cl_clientid);
1807 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1808 *p++ = cpu_to_be32(args->flags); /*flags */
1809
1810 /* Fore Channel */
1811 *p++ = cpu_to_be32(0); /* header padding size */
1812 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1813 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1814 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1815 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1816 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1817 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1818
1819 /* Back Channel */
1820 *p++ = cpu_to_be32(0); /* header padding size */
1821 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1822 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1823 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1824 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1825 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1826 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1827
1828 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1829 *p++ = cpu_to_be32(1);
1830 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1831
1832 /* authsys_parms rfc1831 */
1833 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1834 p = xdr_encode_opaque(p, machine_name, len);
1835 *p++ = cpu_to_be32(0); /* UID */
1836 *p++ = cpu_to_be32(0); /* GID */
1837 *p = cpu_to_be32(0); /* No more gids */
1838 hdr->nops++;
1839 hdr->replen += decode_create_session_maxsz;
1840}
1841
1842static void encode_destroy_session(struct xdr_stream *xdr,
1843 struct nfs4_session *session,
1844 struct compound_hdr *hdr)
1845{
1846 __be32 *p;
1847 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1848 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1849 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1850 hdr->nops++;
1851 hdr->replen += decode_destroy_session_maxsz;
1852}
1853
1854static void encode_reclaim_complete(struct xdr_stream *xdr,
1855 struct nfs41_reclaim_complete_args *args,
1856 struct compound_hdr *hdr)
1857{
1858 __be32 *p;
1859
1860 p = reserve_space(xdr, 8);
1861 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1862 *p++ = cpu_to_be32(args->one_fs);
1863 hdr->nops++;
1864 hdr->replen += decode_reclaim_complete_maxsz;
1865}
1866#endif /* CONFIG_NFS_V4_1 */
1867
1868static void encode_sequence(struct xdr_stream *xdr,
1869 const struct nfs4_sequence_args *args,
1870 struct compound_hdr *hdr)
1871{
1872#if defined(CONFIG_NFS_V4_1)
1873 struct nfs4_session *session = args->sa_session;
1874 struct nfs4_slot_table *tp;
1875 struct nfs4_slot *slot;
1876 __be32 *p;
1877
1878 if (!session)
1879 return;
1880
1881 tp = &session->fc_slot_table;
1882
1883 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1884 slot = tp->slots + args->sa_slotid;
1885
1886 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1887 *p++ = cpu_to_be32(OP_SEQUENCE);
1888
1889 /*
1890 * Sessionid + seqid + slotid + max slotid + cache_this
1891 */
1892 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1893 "max_slotid=%d cache_this=%d\n",
1894 __func__,
1895 ((u32 *)session->sess_id.data)[0],
1896 ((u32 *)session->sess_id.data)[1],
1897 ((u32 *)session->sess_id.data)[2],
1898 ((u32 *)session->sess_id.data)[3],
1899 slot->seq_nr, args->sa_slotid,
1900 tp->highest_used_slotid, args->sa_cache_this);
1901 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1902 *p++ = cpu_to_be32(slot->seq_nr);
1903 *p++ = cpu_to_be32(args->sa_slotid);
1904 *p++ = cpu_to_be32(tp->highest_used_slotid);
1905 *p = cpu_to_be32(args->sa_cache_this);
1906 hdr->nops++;
1907 hdr->replen += decode_sequence_maxsz;
1908#endif /* CONFIG_NFS_V4_1 */
1909}
1910
1911#ifdef CONFIG_NFS_V4_1
1912static void
1913encode_getdevicelist(struct xdr_stream *xdr,
1914 const struct nfs4_getdevicelist_args *args,
1915 struct compound_hdr *hdr)
1916{
1917 __be32 *p;
1918 nfs4_verifier dummy = {
1919 .data = "dummmmmy",
1920 };
1921
1922 p = reserve_space(xdr, 20);
1923 *p++ = cpu_to_be32(OP_GETDEVICELIST);
1924 *p++ = cpu_to_be32(args->layoutclass);
1925 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1926 xdr_encode_hyper(p, 0ULL); /* cookie */
1927 encode_nfs4_verifier(xdr, &dummy);
1928 hdr->nops++;
1929 hdr->replen += decode_getdevicelist_maxsz;
1930}
1931
1932static void
1933encode_getdeviceinfo(struct xdr_stream *xdr,
1934 const struct nfs4_getdeviceinfo_args *args,
1935 struct compound_hdr *hdr)
1936{
1937 __be32 *p;
1938
1939 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE);
1940 *p++ = cpu_to_be32(OP_GETDEVICEINFO);
1941 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1942 NFS4_DEVICEID4_SIZE);
1943 *p++ = cpu_to_be32(args->pdev->layout_type);
1944 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1945 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1946 hdr->nops++;
1947 hdr->replen += decode_getdeviceinfo_maxsz;
1948}
1949
1950static void
1951encode_layoutget(struct xdr_stream *xdr,
1952 const struct nfs4_layoutget_args *args,
1953 struct compound_hdr *hdr)
1954{
1955 __be32 *p;
1956
1957 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1958 *p++ = cpu_to_be32(OP_LAYOUTGET);
1959 *p++ = cpu_to_be32(0); /* Signal layout available */
1960 *p++ = cpu_to_be32(args->type);
1961 *p++ = cpu_to_be32(args->range.iomode);
1962 p = xdr_encode_hyper(p, args->range.offset);
1963 p = xdr_encode_hyper(p, args->range.length);
1964 p = xdr_encode_hyper(p, args->minlength);
1965 p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
1966 *p = cpu_to_be32(args->maxcount);
1967
1968 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1969 __func__,
1970 args->type,
1971 args->range.iomode,
1972 (unsigned long)args->range.offset,
1973 (unsigned long)args->range.length,
1974 args->maxcount);
1975 hdr->nops++;
1976 hdr->replen += decode_layoutget_maxsz;
1977}
1978
1979static int
1980encode_layoutcommit(struct xdr_stream *xdr,
1981 struct inode *inode,
1982 const struct nfs4_layoutcommit_args *args,
1983 struct compound_hdr *hdr)
1984{
1985 __be32 *p;
1986
1987 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1988 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1989
1990 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1991 *p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
1992 /* Only whole file layouts */
1993 p = xdr_encode_hyper(p, 0); /* offset */
1994 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1995 *p++ = cpu_to_be32(0); /* reclaim */
1996 p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE);
1997 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1998 p = xdr_encode_hyper(p, args->lastbytewritten);
1999 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2000 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2001
2002 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
2003 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
2004 NFS_I(inode)->layout, xdr, args);
2005 else {
2006 p = reserve_space(xdr, 4);
2007 *p = cpu_to_be32(0); /* no layout-type payload */
2008 }
2009
2010 hdr->nops++;
2011 hdr->replen += decode_layoutcommit_maxsz;
2012 return 0;
2013}
2014
2015static void
2016encode_layoutreturn(struct xdr_stream *xdr,
2017 const struct nfs4_layoutreturn_args *args,
2018 struct compound_hdr *hdr)
2019{
2020 __be32 *p;
2021
2022 p = reserve_space(xdr, 20);
2023 *p++ = cpu_to_be32(OP_LAYOUTRETURN);
2024 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2025 *p++ = cpu_to_be32(args->layout_type);
2026 *p++ = cpu_to_be32(IOMODE_ANY);
2027 *p = cpu_to_be32(RETURN_FILE);
2028 p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE);
2029 p = xdr_encode_hyper(p, 0);
2030 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
2031 spin_lock(&args->inode->i_lock);
2032 xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
2033 spin_unlock(&args->inode->i_lock);
2034 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2035 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2036 NFS_I(args->inode)->layout, xdr, args);
2037 } else {
2038 p = reserve_space(xdr, 4);
2039 *p = cpu_to_be32(0);
2040 }
2041 hdr->nops++;
2042 hdr->replen += decode_layoutreturn_maxsz;
2043}
2044
2045static int
2046encode_secinfo_no_name(struct xdr_stream *xdr,
2047 const struct nfs41_secinfo_no_name_args *args,
2048 struct compound_hdr *hdr)
2049{
2050 __be32 *p;
2051 p = reserve_space(xdr, 8);
2052 *p++ = cpu_to_be32(OP_SECINFO_NO_NAME);
2053 *p++ = cpu_to_be32(args->style);
2054 hdr->nops++;
2055 hdr->replen += decode_secinfo_no_name_maxsz;
2056 return 0;
2057}
2058
2059static void encode_test_stateid(struct xdr_stream *xdr,
2060 struct nfs41_test_stateid_args *args,
2061 struct compound_hdr *hdr)
2062{
2063 __be32 *p;
2064
2065 p = reserve_space(xdr, 8 + NFS4_STATEID_SIZE);
2066 *p++ = cpu_to_be32(OP_TEST_STATEID);
2067 *p++ = cpu_to_be32(1);
2068 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
2069 hdr->nops++;
2070 hdr->replen += decode_test_stateid_maxsz;
2071}
2072
2073static void encode_free_stateid(struct xdr_stream *xdr,
2074 struct nfs41_free_stateid_args *args,
2075 struct compound_hdr *hdr)
2076{
2077 __be32 *p;
2078 p = reserve_space(xdr, 4 + NFS4_STATEID_SIZE);
2079 *p++ = cpu_to_be32(OP_FREE_STATEID);
2080 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
2081 hdr->nops++;
2082 hdr->replen += decode_free_stateid_maxsz;
2083}
2084#endif /* CONFIG_NFS_V4_1 */
2085
2086/*
2087 * END OF "GENERIC" ENCODE ROUTINES.
2088 */
2089
2090static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2091{
2092#if defined(CONFIG_NFS_V4_1)
2093 if (args->sa_session)
2094 return args->sa_session->clp->cl_mvops->minor_version;
2095#endif /* CONFIG_NFS_V4_1 */
2096 return 0;
2097}
2098
2099/*
2100 * Encode an ACCESS request
2101 */
2102static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2103 const struct nfs4_accessargs *args)
2104{
2105 struct compound_hdr hdr = {
2106 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2107 };
2108
2109 encode_compound_hdr(xdr, req, &hdr);
2110 encode_sequence(xdr, &args->seq_args, &hdr);
2111 encode_putfh(xdr, args->fh, &hdr);
2112 encode_access(xdr, args->access, &hdr);
2113 encode_getfattr(xdr, args->bitmask, &hdr);
2114 encode_nops(&hdr);
2115}
2116
2117/*
2118 * Encode LOOKUP request
2119 */
2120static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2121 const struct nfs4_lookup_arg *args)
2122{
2123 struct compound_hdr hdr = {
2124 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2125 };
2126
2127 encode_compound_hdr(xdr, req, &hdr);
2128 encode_sequence(xdr, &args->seq_args, &hdr);
2129 encode_putfh(xdr, args->dir_fh, &hdr);
2130 encode_lookup(xdr, args->name, &hdr);
2131 encode_getfh(xdr, &hdr);
2132 encode_getfattr(xdr, args->bitmask, &hdr);
2133 encode_nops(&hdr);
2134}
2135
2136/*
2137 * Encode LOOKUP_ROOT request
2138 */
2139static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2140 struct xdr_stream *xdr,
2141 const struct nfs4_lookup_root_arg *args)
2142{
2143 struct compound_hdr hdr = {
2144 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2145 };
2146
2147 encode_compound_hdr(xdr, req, &hdr);
2148 encode_sequence(xdr, &args->seq_args, &hdr);
2149 encode_putrootfh(xdr, &hdr);
2150 encode_getfh(xdr, &hdr);
2151 encode_getfattr(xdr, args->bitmask, &hdr);
2152 encode_nops(&hdr);
2153}
2154
2155/*
2156 * Encode REMOVE request
2157 */
2158static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2159 const struct nfs_removeargs *args)
2160{
2161 struct compound_hdr hdr = {
2162 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2163 };
2164
2165 encode_compound_hdr(xdr, req, &hdr);
2166 encode_sequence(xdr, &args->seq_args, &hdr);
2167 encode_putfh(xdr, args->fh, &hdr);
2168 encode_remove(xdr, &args->name, &hdr);
2169 encode_getfattr(xdr, args->bitmask, &hdr);
2170 encode_nops(&hdr);
2171}
2172
2173/*
2174 * Encode RENAME request
2175 */
2176static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2177 const struct nfs_renameargs *args)
2178{
2179 struct compound_hdr hdr = {
2180 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2181 };
2182
2183 encode_compound_hdr(xdr, req, &hdr);
2184 encode_sequence(xdr, &args->seq_args, &hdr);
2185 encode_putfh(xdr, args->old_dir, &hdr);
2186 encode_savefh(xdr, &hdr);
2187 encode_putfh(xdr, args->new_dir, &hdr);
2188 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2189 encode_getfattr(xdr, args->bitmask, &hdr);
2190 encode_restorefh(xdr, &hdr);
2191 encode_getfattr(xdr, args->bitmask, &hdr);
2192 encode_nops(&hdr);
2193}
2194
2195/*
2196 * Encode LINK request
2197 */
2198static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2199 const struct nfs4_link_arg *args)
2200{
2201 struct compound_hdr hdr = {
2202 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2203 };
2204
2205 encode_compound_hdr(xdr, req, &hdr);
2206 encode_sequence(xdr, &args->seq_args, &hdr);
2207 encode_putfh(xdr, args->fh, &hdr);
2208 encode_savefh(xdr, &hdr);
2209 encode_putfh(xdr, args->dir_fh, &hdr);
2210 encode_link(xdr, args->name, &hdr);
2211 encode_getfattr(xdr, args->bitmask, &hdr);
2212 encode_restorefh(xdr, &hdr);
2213 encode_getfattr(xdr, args->bitmask, &hdr);
2214 encode_nops(&hdr);
2215}
2216
2217/*
2218 * Encode CREATE request
2219 */
2220static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2221 const struct nfs4_create_arg *args)
2222{
2223 struct compound_hdr hdr = {
2224 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2225 };
2226
2227 encode_compound_hdr(xdr, req, &hdr);
2228 encode_sequence(xdr, &args->seq_args, &hdr);
2229 encode_putfh(xdr, args->dir_fh, &hdr);
2230 encode_savefh(xdr, &hdr);
2231 encode_create(xdr, args, &hdr);
2232 encode_getfh(xdr, &hdr);
2233 encode_getfattr(xdr, args->bitmask, &hdr);
2234 encode_restorefh(xdr, &hdr);
2235 encode_getfattr(xdr, args->bitmask, &hdr);
2236 encode_nops(&hdr);
2237}
2238
2239/*
2240 * Encode SYMLINK request
2241 */
2242static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2243 const struct nfs4_create_arg *args)
2244{
2245 nfs4_xdr_enc_create(req, xdr, args);
2246}
2247
2248/*
2249 * Encode GETATTR request
2250 */
2251static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2252 const struct nfs4_getattr_arg *args)
2253{
2254 struct compound_hdr hdr = {
2255 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2256 };
2257
2258 encode_compound_hdr(xdr, req, &hdr);
2259 encode_sequence(xdr, &args->seq_args, &hdr);
2260 encode_putfh(xdr, args->fh, &hdr);
2261 encode_getfattr(xdr, args->bitmask, &hdr);
2262 encode_nops(&hdr);
2263}
2264
2265/*
2266 * Encode a CLOSE request
2267 */
2268static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2269 struct nfs_closeargs *args)
2270{
2271 struct compound_hdr hdr = {
2272 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2273 };
2274
2275 encode_compound_hdr(xdr, req, &hdr);
2276 encode_sequence(xdr, &args->seq_args, &hdr);
2277 encode_putfh(xdr, args->fh, &hdr);
2278 encode_close(xdr, args, &hdr);
2279 encode_getfattr(xdr, args->bitmask, &hdr);
2280 encode_nops(&hdr);
2281}
2282
2283/*
2284 * Encode an OPEN request
2285 */
2286static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2287 struct nfs_openargs *args)
2288{
2289 struct compound_hdr hdr = {
2290 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2291 };
2292
2293 encode_compound_hdr(xdr, req, &hdr);
2294 encode_sequence(xdr, &args->seq_args, &hdr);
2295 encode_putfh(xdr, args->fh, &hdr);
2296 encode_savefh(xdr, &hdr);
2297 encode_open(xdr, args, &hdr);
2298 encode_getfh(xdr, &hdr);
2299 encode_getfattr(xdr, args->bitmask, &hdr);
2300 encode_restorefh(xdr, &hdr);
2301 encode_getfattr(xdr, args->bitmask, &hdr);
2302 encode_nops(&hdr);
2303}
2304
2305/*
2306 * Encode an OPEN_CONFIRM request
2307 */
2308static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2309 struct xdr_stream *xdr,
2310 struct nfs_open_confirmargs *args)
2311{
2312 struct compound_hdr hdr = {
2313 .nops = 0,
2314 };
2315
2316 encode_compound_hdr(xdr, req, &hdr);
2317 encode_putfh(xdr, args->fh, &hdr);
2318 encode_open_confirm(xdr, args, &hdr);
2319 encode_nops(&hdr);
2320}
2321
2322/*
2323 * Encode an OPEN request with no attributes.
2324 */
2325static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2326 struct xdr_stream *xdr,
2327 struct nfs_openargs *args)
2328{
2329 struct compound_hdr hdr = {
2330 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2331 };
2332
2333 encode_compound_hdr(xdr, req, &hdr);
2334 encode_sequence(xdr, &args->seq_args, &hdr);
2335 encode_putfh(xdr, args->fh, &hdr);
2336 encode_open(xdr, args, &hdr);
2337 encode_getfattr(xdr, args->bitmask, &hdr);
2338 encode_nops(&hdr);
2339}
2340
2341/*
2342 * Encode an OPEN_DOWNGRADE request
2343 */
2344static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2345 struct xdr_stream *xdr,
2346 struct nfs_closeargs *args)
2347{
2348 struct compound_hdr hdr = {
2349 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2350 };
2351
2352 encode_compound_hdr(xdr, req, &hdr);
2353 encode_sequence(xdr, &args->seq_args, &hdr);
2354 encode_putfh(xdr, args->fh, &hdr);
2355 encode_open_downgrade(xdr, args, &hdr);
2356 encode_getfattr(xdr, args->bitmask, &hdr);
2357 encode_nops(&hdr);
2358}
2359
2360/*
2361 * Encode a LOCK request
2362 */
2363static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2364 struct nfs_lock_args *args)
2365{
2366 struct compound_hdr hdr = {
2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2368 };
2369
2370 encode_compound_hdr(xdr, req, &hdr);
2371 encode_sequence(xdr, &args->seq_args, &hdr);
2372 encode_putfh(xdr, args->fh, &hdr);
2373 encode_lock(xdr, args, &hdr);
2374 encode_nops(&hdr);
2375}
2376
2377/*
2378 * Encode a LOCKT request
2379 */
2380static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2381 struct nfs_lockt_args *args)
2382{
2383 struct compound_hdr hdr = {
2384 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2385 };
2386
2387 encode_compound_hdr(xdr, req, &hdr);
2388 encode_sequence(xdr, &args->seq_args, &hdr);
2389 encode_putfh(xdr, args->fh, &hdr);
2390 encode_lockt(xdr, args, &hdr);
2391 encode_nops(&hdr);
2392}
2393
2394/*
2395 * Encode a LOCKU request
2396 */
2397static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2398 struct nfs_locku_args *args)
2399{
2400 struct compound_hdr hdr = {
2401 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2402 };
2403
2404 encode_compound_hdr(xdr, req, &hdr);
2405 encode_sequence(xdr, &args->seq_args, &hdr);
2406 encode_putfh(xdr, args->fh, &hdr);
2407 encode_locku(xdr, args, &hdr);
2408 encode_nops(&hdr);
2409}
2410
2411static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2412 struct xdr_stream *xdr,
2413 struct nfs_release_lockowner_args *args)
2414{
2415 struct compound_hdr hdr = {
2416 .minorversion = 0,
2417 };
2418
2419 encode_compound_hdr(xdr, req, &hdr);
2420 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2421 encode_nops(&hdr);
2422}
2423
2424/*
2425 * Encode a READLINK request
2426 */
2427static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2428 const struct nfs4_readlink *args)
2429{
2430 struct compound_hdr hdr = {
2431 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2432 };
2433
2434 encode_compound_hdr(xdr, req, &hdr);
2435 encode_sequence(xdr, &args->seq_args, &hdr);
2436 encode_putfh(xdr, args->fh, &hdr);
2437 encode_readlink(xdr, args, req, &hdr);
2438
2439 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2440 args->pgbase, args->pglen);
2441 encode_nops(&hdr);
2442}
2443
2444/*
2445 * Encode a READDIR request
2446 */
2447static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2448 const struct nfs4_readdir_arg *args)
2449{
2450 struct compound_hdr hdr = {
2451 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2452 };
2453
2454 encode_compound_hdr(xdr, req, &hdr);
2455 encode_sequence(xdr, &args->seq_args, &hdr);
2456 encode_putfh(xdr, args->fh, &hdr);
2457 encode_readdir(xdr, args, req, &hdr);
2458
2459 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2460 args->pgbase, args->count);
2461 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2462 __func__, hdr.replen << 2, args->pages,
2463 args->pgbase, args->count);
2464 encode_nops(&hdr);
2465}
2466
2467/*
2468 * Encode a READ request
2469 */
2470static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2471 struct nfs_readargs *args)
2472{
2473 struct compound_hdr hdr = {
2474 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2475 };
2476
2477 encode_compound_hdr(xdr, req, &hdr);
2478 encode_sequence(xdr, &args->seq_args, &hdr);
2479 encode_putfh(xdr, args->fh, &hdr);
2480 encode_read(xdr, args, &hdr);
2481
2482 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2483 args->pages, args->pgbase, args->count);
2484 req->rq_rcv_buf.flags |= XDRBUF_READ;
2485 encode_nops(&hdr);
2486}
2487
2488/*
2489 * Encode an SETATTR request
2490 */
2491static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2492 struct nfs_setattrargs *args)
2493{
2494 struct compound_hdr hdr = {
2495 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2496 };
2497
2498 encode_compound_hdr(xdr, req, &hdr);
2499 encode_sequence(xdr, &args->seq_args, &hdr);
2500 encode_putfh(xdr, args->fh, &hdr);
2501 encode_setattr(xdr, args, args->server, &hdr);
2502 encode_getfattr(xdr, args->bitmask, &hdr);
2503 encode_nops(&hdr);
2504}
2505
2506/*
2507 * Encode a GETACL request
2508 */
2509static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2510 struct nfs_getaclargs *args)
2511{
2512 struct compound_hdr hdr = {
2513 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2514 };
2515 uint32_t replen;
2516
2517 encode_compound_hdr(xdr, req, &hdr);
2518 encode_sequence(xdr, &args->seq_args, &hdr);
2519 encode_putfh(xdr, args->fh, &hdr);
2520 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2521 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2522
2523 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2524 args->acl_pages, args->acl_pgbase, args->acl_len);
2525 encode_nops(&hdr);
2526}
2527
2528/*
2529 * Encode a WRITE request
2530 */
2531static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2532 struct nfs_writeargs *args)
2533{
2534 struct compound_hdr hdr = {
2535 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2536 };
2537
2538 encode_compound_hdr(xdr, req, &hdr);
2539 encode_sequence(xdr, &args->seq_args, &hdr);
2540 encode_putfh(xdr, args->fh, &hdr);
2541 encode_write(xdr, args, &hdr);
2542 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2543 if (args->bitmask)
2544 encode_getfattr(xdr, args->bitmask, &hdr);
2545 encode_nops(&hdr);
2546}
2547
2548/*
2549 * a COMMIT request
2550 */
2551static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2552 struct nfs_writeargs *args)
2553{
2554 struct compound_hdr hdr = {
2555 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2556 };
2557
2558 encode_compound_hdr(xdr, req, &hdr);
2559 encode_sequence(xdr, &args->seq_args, &hdr);
2560 encode_putfh(xdr, args->fh, &hdr);
2561 encode_commit(xdr, args, &hdr);
2562 if (args->bitmask)
2563 encode_getfattr(xdr, args->bitmask, &hdr);
2564 encode_nops(&hdr);
2565}
2566
2567/*
2568 * FSINFO request
2569 */
2570static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2571 struct nfs4_fsinfo_arg *args)
2572{
2573 struct compound_hdr hdr = {
2574 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2575 };
2576
2577 encode_compound_hdr(xdr, req, &hdr);
2578 encode_sequence(xdr, &args->seq_args, &hdr);
2579 encode_putfh(xdr, args->fh, &hdr);
2580 encode_fsinfo(xdr, args->bitmask, &hdr);
2581 encode_nops(&hdr);
2582}
2583
2584/*
2585 * a PATHCONF request
2586 */
2587static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2588 const struct nfs4_pathconf_arg *args)
2589{
2590 struct compound_hdr hdr = {
2591 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2592 };
2593
2594 encode_compound_hdr(xdr, req, &hdr);
2595 encode_sequence(xdr, &args->seq_args, &hdr);
2596 encode_putfh(xdr, args->fh, &hdr);
2597 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2598 &hdr);
2599 encode_nops(&hdr);
2600}
2601
2602/*
2603 * a STATFS request
2604 */
2605static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2606 const struct nfs4_statfs_arg *args)
2607{
2608 struct compound_hdr hdr = {
2609 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2610 };
2611
2612 encode_compound_hdr(xdr, req, &hdr);
2613 encode_sequence(xdr, &args->seq_args, &hdr);
2614 encode_putfh(xdr, args->fh, &hdr);
2615 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2616 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2617 encode_nops(&hdr);
2618}
2619
2620/*
2621 * GETATTR_BITMAP request
2622 */
2623static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2624 struct xdr_stream *xdr,
2625 struct nfs4_server_caps_arg *args)
2626{
2627 struct compound_hdr hdr = {
2628 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2629 };
2630
2631 encode_compound_hdr(xdr, req, &hdr);
2632 encode_sequence(xdr, &args->seq_args, &hdr);
2633 encode_putfh(xdr, args->fhandle, &hdr);
2634 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2635 FATTR4_WORD0_LINK_SUPPORT|
2636 FATTR4_WORD0_SYMLINK_SUPPORT|
2637 FATTR4_WORD0_ACLSUPPORT, &hdr);
2638 encode_nops(&hdr);
2639}
2640
2641/*
2642 * a RENEW request
2643 */
2644static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2645 struct nfs_client *clp)
2646{
2647 struct compound_hdr hdr = {
2648 .nops = 0,
2649 };
2650
2651 encode_compound_hdr(xdr, req, &hdr);
2652 encode_renew(xdr, clp, &hdr);
2653 encode_nops(&hdr);
2654}
2655
2656/*
2657 * a SETCLIENTID request
2658 */
2659static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2660 struct xdr_stream *xdr,
2661 struct nfs4_setclientid *sc)
2662{
2663 struct compound_hdr hdr = {
2664 .nops = 0,
2665 };
2666
2667 encode_compound_hdr(xdr, req, &hdr);
2668 encode_setclientid(xdr, sc, &hdr);
2669 encode_nops(&hdr);
2670}
2671
2672/*
2673 * a SETCLIENTID_CONFIRM request
2674 */
2675static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2676 struct xdr_stream *xdr,
2677 struct nfs4_setclientid_res *arg)
2678{
2679 struct compound_hdr hdr = {
2680 .nops = 0,
2681 };
2682 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2683
2684 encode_compound_hdr(xdr, req, &hdr);
2685 encode_setclientid_confirm(xdr, arg, &hdr);
2686 encode_putrootfh(xdr, &hdr);
2687 encode_fsinfo(xdr, lease_bitmap, &hdr);
2688 encode_nops(&hdr);
2689}
2690
2691/*
2692 * DELEGRETURN request
2693 */
2694static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2695 struct xdr_stream *xdr,
2696 const struct nfs4_delegreturnargs *args)
2697{
2698 struct compound_hdr hdr = {
2699 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2700 };
2701
2702 encode_compound_hdr(xdr, req, &hdr);
2703 encode_sequence(xdr, &args->seq_args, &hdr);
2704 encode_putfh(xdr, args->fhandle, &hdr);
2705 encode_delegreturn(xdr, args->stateid, &hdr);
2706 encode_getfattr(xdr, args->bitmask, &hdr);
2707 encode_nops(&hdr);
2708}
2709
2710/*
2711 * Encode FS_LOCATIONS request
2712 */
2713static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2714 struct xdr_stream *xdr,
2715 struct nfs4_fs_locations_arg *args)
2716{
2717 struct compound_hdr hdr = {
2718 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2719 };
2720 uint32_t replen;
2721
2722 encode_compound_hdr(xdr, req, &hdr);
2723 encode_sequence(xdr, &args->seq_args, &hdr);
2724 encode_putfh(xdr, args->dir_fh, &hdr);
2725 encode_lookup(xdr, args->name, &hdr);
2726 replen = hdr.replen; /* get the attribute into args->page */
2727 encode_fs_locations(xdr, args->bitmask, &hdr);
2728
2729 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2730 0, PAGE_SIZE);
2731 encode_nops(&hdr);
2732}
2733
2734/*
2735 * Encode SECINFO request
2736 */
2737static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2738 struct xdr_stream *xdr,
2739 struct nfs4_secinfo_arg *args)
2740{
2741 struct compound_hdr hdr = {
2742 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2743 };
2744
2745 encode_compound_hdr(xdr, req, &hdr);
2746 encode_sequence(xdr, &args->seq_args, &hdr);
2747 encode_putfh(xdr, args->dir_fh, &hdr);
2748 encode_secinfo(xdr, args->name, &hdr);
2749 encode_nops(&hdr);
2750}
2751
2752#if defined(CONFIG_NFS_V4_1)
2753/*
2754 * EXCHANGE_ID request
2755 */
2756static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2757 struct xdr_stream *xdr,
2758 struct nfs41_exchange_id_args *args)
2759{
2760 struct compound_hdr hdr = {
2761 .minorversion = args->client->cl_mvops->minor_version,
2762 };
2763
2764 encode_compound_hdr(xdr, req, &hdr);
2765 encode_exchange_id(xdr, args, &hdr);
2766 encode_nops(&hdr);
2767}
2768
2769/*
2770 * a CREATE_SESSION request
2771 */
2772static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2773 struct xdr_stream *xdr,
2774 struct nfs41_create_session_args *args)
2775{
2776 struct compound_hdr hdr = {
2777 .minorversion = args->client->cl_mvops->minor_version,
2778 };
2779
2780 encode_compound_hdr(xdr, req, &hdr);
2781 encode_create_session(xdr, args, &hdr);
2782 encode_nops(&hdr);
2783}
2784
2785/*
2786 * a DESTROY_SESSION request
2787 */
2788static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2789 struct xdr_stream *xdr,
2790 struct nfs4_session *session)
2791{
2792 struct compound_hdr hdr = {
2793 .minorversion = session->clp->cl_mvops->minor_version,
2794 };
2795
2796 encode_compound_hdr(xdr, req, &hdr);
2797 encode_destroy_session(xdr, session, &hdr);
2798 encode_nops(&hdr);
2799}
2800
2801/*
2802 * a SEQUENCE request
2803 */
2804static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2805 struct nfs4_sequence_args *args)
2806{
2807 struct compound_hdr hdr = {
2808 .minorversion = nfs4_xdr_minorversion(args),
2809 };
2810
2811 encode_compound_hdr(xdr, req, &hdr);
2812 encode_sequence(xdr, args, &hdr);
2813 encode_nops(&hdr);
2814}
2815
2816/*
2817 * a GET_LEASE_TIME request
2818 */
2819static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2820 struct xdr_stream *xdr,
2821 struct nfs4_get_lease_time_args *args)
2822{
2823 struct compound_hdr hdr = {
2824 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2825 };
2826 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2827
2828 encode_compound_hdr(xdr, req, &hdr);
2829 encode_sequence(xdr, &args->la_seq_args, &hdr);
2830 encode_putrootfh(xdr, &hdr);
2831 encode_fsinfo(xdr, lease_bitmap, &hdr);
2832 encode_nops(&hdr);
2833}
2834
2835/*
2836 * a RECLAIM_COMPLETE request
2837 */
2838static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2839 struct xdr_stream *xdr,
2840 struct nfs41_reclaim_complete_args *args)
2841{
2842 struct compound_hdr hdr = {
2843 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2844 };
2845
2846 encode_compound_hdr(xdr, req, &hdr);
2847 encode_sequence(xdr, &args->seq_args, &hdr);
2848 encode_reclaim_complete(xdr, args, &hdr);
2849 encode_nops(&hdr);
2850}
2851
2852/*
2853 * Encode GETDEVICELIST request
2854 */
2855static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2856 struct xdr_stream *xdr,
2857 struct nfs4_getdevicelist_args *args)
2858{
2859 struct compound_hdr hdr = {
2860 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2861 };
2862
2863 encode_compound_hdr(xdr, req, &hdr);
2864 encode_sequence(xdr, &args->seq_args, &hdr);
2865 encode_putfh(xdr, args->fh, &hdr);
2866 encode_getdevicelist(xdr, args, &hdr);
2867 encode_nops(&hdr);
2868}
2869
2870/*
2871 * Encode GETDEVICEINFO request
2872 */
2873static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2874 struct xdr_stream *xdr,
2875 struct nfs4_getdeviceinfo_args *args)
2876{
2877 struct compound_hdr hdr = {
2878 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2879 };
2880
2881 encode_compound_hdr(xdr, req, &hdr);
2882 encode_sequence(xdr, &args->seq_args, &hdr);
2883 encode_getdeviceinfo(xdr, args, &hdr);
2884
2885 /* set up reply kvec. Subtract notification bitmap max size (2)
2886 * so that notification bitmap is put in xdr_buf tail */
2887 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2888 args->pdev->pages, args->pdev->pgbase,
2889 args->pdev->pglen);
2890
2891 encode_nops(&hdr);
2892}
2893
2894/*
2895 * Encode LAYOUTGET request
2896 */
2897static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2898 struct xdr_stream *xdr,
2899 struct nfs4_layoutget_args *args)
2900{
2901 struct compound_hdr hdr = {
2902 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2903 };
2904
2905 encode_compound_hdr(xdr, req, &hdr);
2906 encode_sequence(xdr, &args->seq_args, &hdr);
2907 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2908 encode_layoutget(xdr, args, &hdr);
2909
2910 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2911 args->layout.pages, 0, args->layout.pglen);
2912
2913 encode_nops(&hdr);
2914}
2915
2916/*
2917 * Encode LAYOUTCOMMIT request
2918 */
2919static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2920 struct xdr_stream *xdr,
2921 struct nfs4_layoutcommit_args *args)
2922{
2923 struct nfs4_layoutcommit_data *data =
2924 container_of(args, struct nfs4_layoutcommit_data, args);
2925 struct compound_hdr hdr = {
2926 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2927 };
2928
2929 encode_compound_hdr(xdr, req, &hdr);
2930 encode_sequence(xdr, &args->seq_args, &hdr);
2931 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2932 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2933 encode_getfattr(xdr, args->bitmask, &hdr);
2934 encode_nops(&hdr);
2935}
2936
2937/*
2938 * Encode LAYOUTRETURN request
2939 */
2940static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2941 struct xdr_stream *xdr,
2942 struct nfs4_layoutreturn_args *args)
2943{
2944 struct compound_hdr hdr = {
2945 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2946 };
2947
2948 encode_compound_hdr(xdr, req, &hdr);
2949 encode_sequence(xdr, &args->seq_args, &hdr);
2950 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2951 encode_layoutreturn(xdr, args, &hdr);
2952 encode_nops(&hdr);
2953}
2954
2955/*
2956 * Encode SECINFO_NO_NAME request
2957 */
2958static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2959 struct xdr_stream *xdr,
2960 struct nfs41_secinfo_no_name_args *args)
2961{
2962 struct compound_hdr hdr = {
2963 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2964 };
2965
2966 encode_compound_hdr(xdr, req, &hdr);
2967 encode_sequence(xdr, &args->seq_args, &hdr);
2968 encode_putrootfh(xdr, &hdr);
2969 encode_secinfo_no_name(xdr, args, &hdr);
2970 encode_nops(&hdr);
2971 return 0;
2972}
2973
2974/*
2975 * Encode TEST_STATEID request
2976 */
2977static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2978 struct xdr_stream *xdr,
2979 struct nfs41_test_stateid_args *args)
2980{
2981 struct compound_hdr hdr = {
2982 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2983 };
2984
2985 encode_compound_hdr(xdr, req, &hdr);
2986 encode_sequence(xdr, &args->seq_args, &hdr);
2987 encode_test_stateid(xdr, args, &hdr);
2988 encode_nops(&hdr);
2989}
2990
2991/*
2992 * Encode FREE_STATEID request
2993 */
2994static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2995 struct xdr_stream *xdr,
2996 struct nfs41_free_stateid_args *args)
2997{
2998 struct compound_hdr hdr = {
2999 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3000 };
3001
3002 encode_compound_hdr(xdr, req, &hdr);
3003 encode_sequence(xdr, &args->seq_args, &hdr);
3004 encode_free_stateid(xdr, args, &hdr);
3005 encode_nops(&hdr);
3006}
3007#endif /* CONFIG_NFS_V4_1 */
3008
3009static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3010{
3011 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3012 "Remaining buffer length is %tu words.\n",
3013 func, xdr->end - xdr->p);
3014}
3015
3016static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3017{
3018 __be32 *p;
3019
3020 p = xdr_inline_decode(xdr, 4);
3021 if (unlikely(!p))
3022 goto out_overflow;
3023 *len = be32_to_cpup(p);
3024 p = xdr_inline_decode(xdr, *len);
3025 if (unlikely(!p))
3026 goto out_overflow;
3027 *string = (char *)p;
3028 return 0;
3029out_overflow:
3030 print_overflow_msg(__func__, xdr);
3031 return -EIO;
3032}
3033
3034static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3035{
3036 __be32 *p;
3037
3038 p = xdr_inline_decode(xdr, 8);
3039 if (unlikely(!p))
3040 goto out_overflow;
3041 hdr->status = be32_to_cpup(p++);
3042 hdr->taglen = be32_to_cpup(p);
3043
3044 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3045 if (unlikely(!p))
3046 goto out_overflow;
3047 hdr->tag = (char *)p;
3048 p += XDR_QUADLEN(hdr->taglen);
3049 hdr->nops = be32_to_cpup(p);
3050 if (unlikely(hdr->nops < 1))
3051 return nfs4_stat_to_errno(hdr->status);
3052 return 0;
3053out_overflow:
3054 print_overflow_msg(__func__, xdr);
3055 return -EIO;
3056}
3057
3058static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3059{
3060 __be32 *p;
3061 uint32_t opnum;
3062 int32_t nfserr;
3063
3064 p = xdr_inline_decode(xdr, 8);
3065 if (unlikely(!p))
3066 goto out_overflow;
3067 opnum = be32_to_cpup(p++);
3068 if (opnum != expected) {
3069 dprintk("nfs: Server returned operation"
3070 " %d but we issued a request for %d\n",
3071 opnum, expected);
3072 return -EIO;
3073 }
3074 nfserr = be32_to_cpup(p);
3075 if (nfserr != NFS_OK)
3076 return nfs4_stat_to_errno(nfserr);
3077 return 0;
3078out_overflow:
3079 print_overflow_msg(__func__, xdr);
3080 return -EIO;
3081}
3082
3083/* Dummy routine */
3084static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3085{
3086 __be32 *p;
3087 unsigned int strlen;
3088 char *str;
3089
3090 p = xdr_inline_decode(xdr, 12);
3091 if (likely(p))
3092 return decode_opaque_inline(xdr, &strlen, &str);
3093 print_overflow_msg(__func__, xdr);
3094 return -EIO;
3095}
3096
3097static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3098{
3099 uint32_t bmlen;
3100 __be32 *p;
3101
3102 p = xdr_inline_decode(xdr, 4);
3103 if (unlikely(!p))
3104 goto out_overflow;
3105 bmlen = be32_to_cpup(p);
3106
3107 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3108 p = xdr_inline_decode(xdr, (bmlen << 2));
3109 if (unlikely(!p))
3110 goto out_overflow;
3111 if (bmlen > 0) {
3112 bitmap[0] = be32_to_cpup(p++);
3113 if (bmlen > 1) {
3114 bitmap[1] = be32_to_cpup(p++);
3115 if (bmlen > 2)
3116 bitmap[2] = be32_to_cpup(p);
3117 }
3118 }
3119 return 0;
3120out_overflow:
3121 print_overflow_msg(__func__, xdr);
3122 return -EIO;
3123}
3124
3125static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
3126{
3127 __be32 *p;
3128
3129 p = xdr_inline_decode(xdr, 4);
3130 if (unlikely(!p))
3131 goto out_overflow;
3132 *attrlen = be32_to_cpup(p);
3133 *savep = xdr->p;
3134 return 0;
3135out_overflow:
3136 print_overflow_msg(__func__, xdr);
3137 return -EIO;
3138}
3139
3140static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3141{
3142 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3143 int ret;
3144 ret = decode_attr_bitmap(xdr, bitmask);
3145 if (unlikely(ret < 0))
3146 return ret;
3147 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3148 } else
3149 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3150 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3151 bitmask[0], bitmask[1], bitmask[2]);
3152 return 0;
3153}
3154
3155static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3156{
3157 __be32 *p;
3158 int ret = 0;
3159
3160 *type = 0;
3161 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3162 return -EIO;
3163 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3164 p = xdr_inline_decode(xdr, 4);
3165 if (unlikely(!p))
3166 goto out_overflow;
3167 *type = be32_to_cpup(p);
3168 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3169 dprintk("%s: bad type %d\n", __func__, *type);
3170 return -EIO;
3171 }
3172 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3173 ret = NFS_ATTR_FATTR_TYPE;
3174 }
3175 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3176 return ret;
3177out_overflow:
3178 print_overflow_msg(__func__, xdr);
3179 return -EIO;
3180}
3181
3182static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3183{
3184 __be32 *p;
3185 int ret = 0;
3186
3187 *change = 0;
3188 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3189 return -EIO;
3190 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3191 p = xdr_inline_decode(xdr, 8);
3192 if (unlikely(!p))
3193 goto out_overflow;
3194 xdr_decode_hyper(p, change);
3195 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3196 ret = NFS_ATTR_FATTR_CHANGE;
3197 }
3198 dprintk("%s: change attribute=%Lu\n", __func__,
3199 (unsigned long long)*change);
3200 return ret;
3201out_overflow:
3202 print_overflow_msg(__func__, xdr);
3203 return -EIO;
3204}
3205
3206static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3207{
3208 __be32 *p;
3209 int ret = 0;
3210
3211 *size = 0;
3212 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3213 return -EIO;
3214 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3215 p = xdr_inline_decode(xdr, 8);
3216 if (unlikely(!p))
3217 goto out_overflow;
3218 xdr_decode_hyper(p, size);
3219 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3220 ret = NFS_ATTR_FATTR_SIZE;
3221 }
3222 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3223 return ret;
3224out_overflow:
3225 print_overflow_msg(__func__, xdr);
3226 return -EIO;
3227}
3228
3229static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3230{
3231 __be32 *p;
3232
3233 *res = 0;
3234 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3235 return -EIO;
3236 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3237 p = xdr_inline_decode(xdr, 4);
3238 if (unlikely(!p))
3239 goto out_overflow;
3240 *res = be32_to_cpup(p);
3241 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3242 }
3243 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3244 return 0;
3245out_overflow:
3246 print_overflow_msg(__func__, xdr);
3247 return -EIO;
3248}
3249
3250static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3251{
3252 __be32 *p;
3253
3254 *res = 0;
3255 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3256 return -EIO;
3257 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3258 p = xdr_inline_decode(xdr, 4);
3259 if (unlikely(!p))
3260 goto out_overflow;
3261 *res = be32_to_cpup(p);
3262 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3263 }
3264 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3265 return 0;
3266out_overflow:
3267 print_overflow_msg(__func__, xdr);
3268 return -EIO;
3269}
3270
3271static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3272{
3273 __be32 *p;
3274 int ret = 0;
3275
3276 fsid->major = 0;
3277 fsid->minor = 0;
3278 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3279 return -EIO;
3280 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3281 p = xdr_inline_decode(xdr, 16);
3282 if (unlikely(!p))
3283 goto out_overflow;
3284 p = xdr_decode_hyper(p, &fsid->major);
3285 xdr_decode_hyper(p, &fsid->minor);
3286 bitmap[0] &= ~FATTR4_WORD0_FSID;
3287 ret = NFS_ATTR_FATTR_FSID;
3288 }
3289 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3290 (unsigned long long)fsid->major,
3291 (unsigned long long)fsid->minor);
3292 return ret;
3293out_overflow:
3294 print_overflow_msg(__func__, xdr);
3295 return -EIO;
3296}
3297
3298static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3299{
3300 __be32 *p;
3301
3302 *res = 60;
3303 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3304 return -EIO;
3305 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3306 p = xdr_inline_decode(xdr, 4);
3307 if (unlikely(!p))
3308 goto out_overflow;
3309 *res = be32_to_cpup(p);
3310 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3311 }
3312 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3313 return 0;
3314out_overflow:
3315 print_overflow_msg(__func__, xdr);
3316 return -EIO;
3317}
3318
3319static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3320{
3321 __be32 *p;
3322
3323 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3324 return -EIO;
3325 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3326 p = xdr_inline_decode(xdr, 4);
3327 if (unlikely(!p))
3328 goto out_overflow;
3329 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3330 *res = -be32_to_cpup(p);
3331 }
3332 return 0;
3333out_overflow:
3334 print_overflow_msg(__func__, xdr);
3335 return -EIO;
3336}
3337
3338static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3339{
3340 __be32 *p;
3341 int len;
3342
3343 if (fh != NULL)
3344 memset(fh, 0, sizeof(*fh));
3345
3346 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3347 return -EIO;
3348 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3349 p = xdr_inline_decode(xdr, 4);
3350 if (unlikely(!p))
3351 goto out_overflow;
3352 len = be32_to_cpup(p);
3353 if (len > NFS4_FHSIZE)
3354 return -EIO;
3355 p = xdr_inline_decode(xdr, len);
3356 if (unlikely(!p))
3357 goto out_overflow;
3358 if (fh != NULL) {
3359 memcpy(fh->data, p, len);
3360 fh->size = len;
3361 }
3362 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3363 }
3364 return 0;
3365out_overflow:
3366 print_overflow_msg(__func__, xdr);
3367 return -EIO;
3368}
3369
3370static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3371{
3372 __be32 *p;
3373
3374 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3375 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3376 return -EIO;
3377 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3378 p = xdr_inline_decode(xdr, 4);
3379 if (unlikely(!p))
3380 goto out_overflow;
3381 *res = be32_to_cpup(p);
3382 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3383 }
3384 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3385 return 0;
3386out_overflow:
3387 print_overflow_msg(__func__, xdr);
3388 return -EIO;
3389}
3390
3391static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3392{
3393 __be32 *p;
3394 int ret = 0;
3395
3396 *fileid = 0;
3397 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3398 return -EIO;
3399 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3400 p = xdr_inline_decode(xdr, 8);
3401 if (unlikely(!p))
3402 goto out_overflow;
3403 xdr_decode_hyper(p, fileid);
3404 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3405 ret = NFS_ATTR_FATTR_FILEID;
3406 }
3407 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3408 return ret;
3409out_overflow:
3410 print_overflow_msg(__func__, xdr);
3411 return -EIO;
3412}
3413
3414static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3415{
3416 __be32 *p;
3417 int ret = 0;
3418
3419 *fileid = 0;
3420 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3421 return -EIO;
3422 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3423 p = xdr_inline_decode(xdr, 8);
3424 if (unlikely(!p))
3425 goto out_overflow;
3426 xdr_decode_hyper(p, fileid);
3427 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3428 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3429 }
3430 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3431 return ret;
3432out_overflow:
3433 print_overflow_msg(__func__, xdr);
3434 return -EIO;
3435}
3436
3437static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3438{
3439 __be32 *p;
3440 int status = 0;
3441
3442 *res = 0;
3443 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3444 return -EIO;
3445 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3446 p = xdr_inline_decode(xdr, 8);
3447 if (unlikely(!p))
3448 goto out_overflow;
3449 xdr_decode_hyper(p, res);
3450 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3451 }
3452 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3453 return status;
3454out_overflow:
3455 print_overflow_msg(__func__, xdr);
3456 return -EIO;
3457}
3458
3459static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3460{
3461 __be32 *p;
3462 int status = 0;
3463
3464 *res = 0;
3465 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3466 return -EIO;
3467 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3468 p = xdr_inline_decode(xdr, 8);
3469 if (unlikely(!p))
3470 goto out_overflow;
3471 xdr_decode_hyper(p, res);
3472 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3473 }
3474 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3475 return status;
3476out_overflow:
3477 print_overflow_msg(__func__, xdr);
3478 return -EIO;
3479}
3480
3481static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3482{
3483 __be32 *p;
3484 int status = 0;
3485
3486 *res = 0;
3487 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3488 return -EIO;
3489 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3490 p = xdr_inline_decode(xdr, 8);
3491 if (unlikely(!p))
3492 goto out_overflow;
3493 xdr_decode_hyper(p, res);
3494 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3495 }
3496 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3497 return status;
3498out_overflow:
3499 print_overflow_msg(__func__, xdr);
3500 return -EIO;
3501}
3502
3503static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3504{
3505 u32 n;
3506 __be32 *p;
3507 int status = 0;
3508
3509 p = xdr_inline_decode(xdr, 4);
3510 if (unlikely(!p))
3511 goto out_overflow;
3512 n = be32_to_cpup(p);
3513 if (n == 0)
3514 goto root_path;
3515 dprintk("path ");
3516 path->ncomponents = 0;
3517 while (path->ncomponents < n) {
3518 struct nfs4_string *component = &path->components[path->ncomponents];
3519 status = decode_opaque_inline(xdr, &component->len, &component->data);
3520 if (unlikely(status != 0))
3521 goto out_eio;
3522 if (path->ncomponents != n)
3523 dprintk("/");
3524 dprintk("%s", component->data);
3525 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3526 path->ncomponents++;
3527 else {
3528 dprintk("cannot parse %d components in path\n", n);
3529 goto out_eio;
3530 }
3531 }
3532out:
3533 dprintk("\n");
3534 return status;
3535root_path:
3536/* a root pathname is sent as a zero component4 */
3537 path->ncomponents = 1;
3538 path->components[0].len=0;
3539 path->components[0].data=NULL;
3540 dprintk("path /\n");
3541 goto out;
3542out_eio:
3543 dprintk(" status %d", status);
3544 status = -EIO;
3545 goto out;
3546out_overflow:
3547 print_overflow_msg(__func__, xdr);
3548 return -EIO;
3549}
3550
3551static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3552{
3553 int n;
3554 __be32 *p;
3555 int status = -EIO;
3556
3557 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3558 goto out;
3559 status = 0;
3560 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3561 goto out;
3562 dprintk("%s: fsroot ", __func__);
3563 status = decode_pathname(xdr, &res->fs_path);
3564 if (unlikely(status != 0))
3565 goto out;
3566 p = xdr_inline_decode(xdr, 4);
3567 if (unlikely(!p))
3568 goto out_overflow;
3569 n = be32_to_cpup(p);
3570 if (n <= 0)
3571 goto out_eio;
3572 res->nlocations = 0;
3573 while (res->nlocations < n) {
3574 u32 m;
3575 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3576
3577 p = xdr_inline_decode(xdr, 4);
3578 if (unlikely(!p))
3579 goto out_overflow;
3580 m = be32_to_cpup(p);
3581
3582 loc->nservers = 0;
3583 dprintk("%s: servers ", __func__);
3584 while (loc->nservers < m) {
3585 struct nfs4_string *server = &loc->servers[loc->nservers];
3586 status = decode_opaque_inline(xdr, &server->len, &server->data);
3587 if (unlikely(status != 0))
3588 goto out_eio;
3589 dprintk("%s ", server->data);
3590 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3591 loc->nservers++;
3592 else {
3593 unsigned int i;
3594 dprintk("%s: using first %u of %u servers "
3595 "returned for location %u\n",
3596 __func__,
3597 NFS4_FS_LOCATION_MAXSERVERS,
3598 m, res->nlocations);
3599 for (i = loc->nservers; i < m; i++) {
3600 unsigned int len;
3601 char *data;
3602 status = decode_opaque_inline(xdr, &len, &data);
3603 if (unlikely(status != 0))
3604 goto out_eio;
3605 }
3606 }
3607 }
3608 status = decode_pathname(xdr, &loc->rootpath);
3609 if (unlikely(status != 0))
3610 goto out_eio;
3611 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3612 res->nlocations++;
3613 }
3614 if (res->nlocations != 0)
3615 status = NFS_ATTR_FATTR_V4_REFERRAL;
3616out:
3617 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3618 return status;
3619out_overflow:
3620 print_overflow_msg(__func__, xdr);
3621out_eio:
3622 status = -EIO;
3623 goto out;
3624}
3625
3626static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3627{
3628 __be32 *p;
3629 int status = 0;
3630
3631 *res = 0;
3632 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3633 return -EIO;
3634 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3635 p = xdr_inline_decode(xdr, 8);
3636 if (unlikely(!p))
3637 goto out_overflow;
3638 xdr_decode_hyper(p, res);
3639 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3640 }
3641 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3642 return status;
3643out_overflow:
3644 print_overflow_msg(__func__, xdr);
3645 return -EIO;
3646}
3647
3648static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3649{
3650 __be32 *p;
3651 int status = 0;
3652
3653 *maxlink = 1;
3654 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3655 return -EIO;
3656 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3657 p = xdr_inline_decode(xdr, 4);
3658 if (unlikely(!p))
3659 goto out_overflow;
3660 *maxlink = be32_to_cpup(p);
3661 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3662 }
3663 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3664 return status;
3665out_overflow:
3666 print_overflow_msg(__func__, xdr);
3667 return -EIO;
3668}
3669
3670static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3671{
3672 __be32 *p;
3673 int status = 0;
3674
3675 *maxname = 1024;
3676 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3677 return -EIO;
3678 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3679 p = xdr_inline_decode(xdr, 4);
3680 if (unlikely(!p))
3681 goto out_overflow;
3682 *maxname = be32_to_cpup(p);
3683 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3684 }
3685 dprintk("%s: maxname=%u\n", __func__, *maxname);
3686 return status;
3687out_overflow:
3688 print_overflow_msg(__func__, xdr);
3689 return -EIO;
3690}
3691
3692static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3693{
3694 __be32 *p;
3695 int status = 0;
3696
3697 *res = 1024;
3698 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3699 return -EIO;
3700 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3701 uint64_t maxread;
3702 p = xdr_inline_decode(xdr, 8);
3703 if (unlikely(!p))
3704 goto out_overflow;
3705 xdr_decode_hyper(p, &maxread);
3706 if (maxread > 0x7FFFFFFF)
3707 maxread = 0x7FFFFFFF;
3708 *res = (uint32_t)maxread;
3709 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3710 }
3711 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3712 return status;
3713out_overflow:
3714 print_overflow_msg(__func__, xdr);
3715 return -EIO;
3716}
3717
3718static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3719{
3720 __be32 *p;
3721 int status = 0;
3722
3723 *res = 1024;
3724 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3725 return -EIO;
3726 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3727 uint64_t maxwrite;
3728 p = xdr_inline_decode(xdr, 8);
3729 if (unlikely(!p))
3730 goto out_overflow;
3731 xdr_decode_hyper(p, &maxwrite);
3732 if (maxwrite > 0x7FFFFFFF)
3733 maxwrite = 0x7FFFFFFF;
3734 *res = (uint32_t)maxwrite;
3735 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3736 }
3737 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3738 return status;
3739out_overflow:
3740 print_overflow_msg(__func__, xdr);
3741 return -EIO;
3742}
3743
3744static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3745{
3746 uint32_t tmp;
3747 __be32 *p;
3748 int ret = 0;
3749
3750 *mode = 0;
3751 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3752 return -EIO;
3753 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3754 p = xdr_inline_decode(xdr, 4);
3755 if (unlikely(!p))
3756 goto out_overflow;
3757 tmp = be32_to_cpup(p);
3758 *mode = tmp & ~S_IFMT;
3759 bitmap[1] &= ~FATTR4_WORD1_MODE;
3760 ret = NFS_ATTR_FATTR_MODE;
3761 }
3762 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3763 return ret;
3764out_overflow:
3765 print_overflow_msg(__func__, xdr);
3766 return -EIO;
3767}
3768
3769static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3770{
3771 __be32 *p;
3772 int ret = 0;
3773
3774 *nlink = 1;
3775 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3776 return -EIO;
3777 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3778 p = xdr_inline_decode(xdr, 4);
3779 if (unlikely(!p))
3780 goto out_overflow;
3781 *nlink = be32_to_cpup(p);
3782 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3783 ret = NFS_ATTR_FATTR_NLINK;
3784 }
3785 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3786 return ret;
3787out_overflow:
3788 print_overflow_msg(__func__, xdr);
3789 return -EIO;
3790}
3791
3792static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3793 const struct nfs_server *server, uint32_t *uid, int may_sleep)
3794{
3795 uint32_t len;
3796 __be32 *p;
3797 int ret = 0;
3798
3799 *uid = -2;
3800 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3801 return -EIO;
3802 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3803 p = xdr_inline_decode(xdr, 4);
3804 if (unlikely(!p))
3805 goto out_overflow;
3806 len = be32_to_cpup(p);
3807 p = xdr_inline_decode(xdr, len);
3808 if (unlikely(!p))
3809 goto out_overflow;
3810 if (!may_sleep) {
3811 /* do nothing */
3812 } else if (len < XDR_MAX_NETOBJ) {
3813 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3814 ret = NFS_ATTR_FATTR_OWNER;
3815 else
3816 dprintk("%s: nfs_map_name_to_uid failed!\n",
3817 __func__);
3818 } else
3819 dprintk("%s: name too long (%u)!\n",
3820 __func__, len);
3821 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3822 }
3823 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3824 return ret;
3825out_overflow:
3826 print_overflow_msg(__func__, xdr);
3827 return -EIO;
3828}
3829
3830static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3831 const struct nfs_server *server, uint32_t *gid, int may_sleep)
3832{
3833 uint32_t len;
3834 __be32 *p;
3835 int ret = 0;
3836
3837 *gid = -2;
3838 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3839 return -EIO;
3840 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3841 p = xdr_inline_decode(xdr, 4);
3842 if (unlikely(!p))
3843 goto out_overflow;
3844 len = be32_to_cpup(p);
3845 p = xdr_inline_decode(xdr, len);
3846 if (unlikely(!p))
3847 goto out_overflow;
3848 if (!may_sleep) {
3849 /* do nothing */
3850 } else if (len < XDR_MAX_NETOBJ) {
3851 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3852 ret = NFS_ATTR_FATTR_GROUP;
3853 else
3854 dprintk("%s: nfs_map_group_to_gid failed!\n",
3855 __func__);
3856 } else
3857 dprintk("%s: name too long (%u)!\n",
3858 __func__, len);
3859 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3860 }
3861 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3862 return ret;
3863out_overflow:
3864 print_overflow_msg(__func__, xdr);
3865 return -EIO;
3866}
3867
3868static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3869{
3870 uint32_t major = 0, minor = 0;
3871 __be32 *p;
3872 int ret = 0;
3873
3874 *rdev = MKDEV(0,0);
3875 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3876 return -EIO;
3877 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3878 dev_t tmp;
3879
3880 p = xdr_inline_decode(xdr, 8);
3881 if (unlikely(!p))
3882 goto out_overflow;
3883 major = be32_to_cpup(p++);
3884 minor = be32_to_cpup(p);
3885 tmp = MKDEV(major, minor);
3886 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3887 *rdev = tmp;
3888 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3889 ret = NFS_ATTR_FATTR_RDEV;
3890 }
3891 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3892 return ret;
3893out_overflow:
3894 print_overflow_msg(__func__, xdr);
3895 return -EIO;
3896}
3897
3898static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3899{
3900 __be32 *p;
3901 int status = 0;
3902
3903 *res = 0;
3904 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3905 return -EIO;
3906 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3907 p = xdr_inline_decode(xdr, 8);
3908 if (unlikely(!p))
3909 goto out_overflow;
3910 xdr_decode_hyper(p, res);
3911 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3912 }
3913 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3914 return status;
3915out_overflow:
3916 print_overflow_msg(__func__, xdr);
3917 return -EIO;
3918}
3919
3920static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3921{
3922 __be32 *p;
3923 int status = 0;
3924
3925 *res = 0;
3926 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3927 return -EIO;
3928 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3929 p = xdr_inline_decode(xdr, 8);
3930 if (unlikely(!p))
3931 goto out_overflow;
3932 xdr_decode_hyper(p, res);
3933 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3934 }
3935 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3936 return status;
3937out_overflow:
3938 print_overflow_msg(__func__, xdr);
3939 return -EIO;
3940}
3941
3942static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3943{
3944 __be32 *p;
3945 int status = 0;
3946
3947 *res = 0;
3948 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3949 return -EIO;
3950 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3951 p = xdr_inline_decode(xdr, 8);
3952 if (unlikely(!p))
3953 goto out_overflow;
3954 xdr_decode_hyper(p, res);
3955 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3956 }
3957 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3958 return status;
3959out_overflow:
3960 print_overflow_msg(__func__, xdr);
3961 return -EIO;
3962}
3963
3964static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3965{
3966 __be32 *p;
3967 int ret = 0;
3968
3969 *used = 0;
3970 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3971 return -EIO;
3972 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3973 p = xdr_inline_decode(xdr, 8);
3974 if (unlikely(!p))
3975 goto out_overflow;
3976 xdr_decode_hyper(p, used);
3977 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3978 ret = NFS_ATTR_FATTR_SPACE_USED;
3979 }
3980 dprintk("%s: space used=%Lu\n", __func__,
3981 (unsigned long long)*used);
3982 return ret;
3983out_overflow:
3984 print_overflow_msg(__func__, xdr);
3985 return -EIO;
3986}
3987
3988static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3989{
3990 __be32 *p;
3991 uint64_t sec;
3992 uint32_t nsec;
3993
3994 p = xdr_inline_decode(xdr, 12);
3995 if (unlikely(!p))
3996 goto out_overflow;
3997 p = xdr_decode_hyper(p, &sec);
3998 nsec = be32_to_cpup(p);
3999 time->tv_sec = (time_t)sec;
4000 time->tv_nsec = (long)nsec;
4001 return 0;
4002out_overflow:
4003 print_overflow_msg(__func__, xdr);
4004 return -EIO;
4005}
4006
4007static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4008{
4009 int status = 0;
4010
4011 time->tv_sec = 0;
4012 time->tv_nsec = 0;
4013 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4014 return -EIO;
4015 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4016 status = decode_attr_time(xdr, time);
4017 if (status == 0)
4018 status = NFS_ATTR_FATTR_ATIME;
4019 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4020 }
4021 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4022 return status;
4023}
4024
4025static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4026{
4027 int status = 0;
4028
4029 time->tv_sec = 0;
4030 time->tv_nsec = 0;
4031 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4032 return -EIO;
4033 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4034 status = decode_attr_time(xdr, time);
4035 if (status == 0)
4036 status = NFS_ATTR_FATTR_CTIME;
4037 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4038 }
4039 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4040 return status;
4041}
4042
4043static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4044 struct timespec *time)
4045{
4046 int status = 0;
4047
4048 time->tv_sec = 0;
4049 time->tv_nsec = 0;
4050 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4051 return -EIO;
4052 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4053 status = decode_attr_time(xdr, time);
4054 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4055 }
4056 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4057 (long)time->tv_nsec);
4058 return status;
4059}
4060
4061static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4062{
4063 int status = 0;
4064
4065 time->tv_sec = 0;
4066 time->tv_nsec = 0;
4067 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4068 return -EIO;
4069 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4070 status = decode_attr_time(xdr, time);
4071 if (status == 0)
4072 status = NFS_ATTR_FATTR_MTIME;
4073 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4074 }
4075 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4076 return status;
4077}
4078
4079static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
4080{
4081 unsigned int attrwords = XDR_QUADLEN(attrlen);
4082 unsigned int nwords = xdr->p - savep;
4083
4084 if (unlikely(attrwords != nwords)) {
4085 dprintk("%s: server returned incorrect attribute length: "
4086 "%u %c %u\n",
4087 __func__,
4088 attrwords << 2,
4089 (attrwords < nwords) ? '<' : '>',
4090 nwords << 2);
4091 return -EIO;
4092 }
4093 return 0;
4094}
4095
4096static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4097{
4098 __be32 *p;
4099
4100 p = xdr_inline_decode(xdr, 20);
4101 if (unlikely(!p))
4102 goto out_overflow;
4103 cinfo->atomic = be32_to_cpup(p++);
4104 p = xdr_decode_hyper(p, &cinfo->before);
4105 xdr_decode_hyper(p, &cinfo->after);
4106 return 0;
4107out_overflow:
4108 print_overflow_msg(__func__, xdr);
4109 return -EIO;
4110}
4111
4112static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
4113{
4114 __be32 *p;
4115 uint32_t supp, acc;
4116 int status;
4117
4118 status = decode_op_hdr(xdr, OP_ACCESS);
4119 if (status)
4120 return status;
4121 p = xdr_inline_decode(xdr, 8);
4122 if (unlikely(!p))
4123 goto out_overflow;
4124 supp = be32_to_cpup(p++);
4125 acc = be32_to_cpup(p);
4126 access->supported = supp;
4127 access->access = acc;
4128 return 0;
4129out_overflow:
4130 print_overflow_msg(__func__, xdr);
4131 return -EIO;
4132}
4133
4134static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4135{
4136 __be32 *p;
4137
4138 p = xdr_inline_decode(xdr, len);
4139 if (likely(p)) {
4140 memcpy(buf, p, len);
4141 return 0;
4142 }
4143 print_overflow_msg(__func__, xdr);
4144 return -EIO;
4145}
4146
4147static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4148{
4149 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
4150}
4151
4152static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4153{
4154 int status;
4155
4156 status = decode_op_hdr(xdr, OP_CLOSE);
4157 if (status != -EIO)
4158 nfs_increment_open_seqid(status, res->seqid);
4159 if (!status)
4160 status = decode_stateid(xdr, &res->stateid);
4161 return status;
4162}
4163
4164static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4165{
4166 return decode_opaque_fixed(xdr, verifier, 8);
4167}
4168
4169static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
4170{
4171 int status;
4172
4173 status = decode_op_hdr(xdr, OP_COMMIT);
4174 if (!status)
4175 status = decode_verifier(xdr, res->verf->verifier);
4176 return status;
4177}
4178
4179static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4180{
4181 __be32 *p;
4182 uint32_t bmlen;
4183 int status;
4184
4185 status = decode_op_hdr(xdr, OP_CREATE);
4186 if (status)
4187 return status;
4188 if ((status = decode_change_info(xdr, cinfo)))
4189 return status;
4190 p = xdr_inline_decode(xdr, 4);
4191 if (unlikely(!p))
4192 goto out_overflow;
4193 bmlen = be32_to_cpup(p);
4194 p = xdr_inline_decode(xdr, bmlen << 2);
4195 if (likely(p))
4196 return 0;
4197out_overflow:
4198 print_overflow_msg(__func__, xdr);
4199 return -EIO;
4200}
4201
4202static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4203{
4204 __be32 *savep;
4205 uint32_t attrlen, bitmap[3] = {0};
4206 int status;
4207
4208 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4209 goto xdr_error;
4210 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4211 goto xdr_error;
4212 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4213 goto xdr_error;
4214 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4215 goto xdr_error;
4216 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4217 goto xdr_error;
4218 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4219 goto xdr_error;
4220 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4221 goto xdr_error;
4222 status = verify_attr_len(xdr, savep, attrlen);
4223xdr_error:
4224 dprintk("%s: xdr returned %d!\n", __func__, -status);
4225 return status;
4226}
4227
4228static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4229{
4230 __be32 *savep;
4231 uint32_t attrlen, bitmap[3] = {0};
4232 int status;
4233
4234 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4235 goto xdr_error;
4236 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4237 goto xdr_error;
4238 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4239 goto xdr_error;
4240
4241 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4242 goto xdr_error;
4243 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4244 goto xdr_error;
4245 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4246 goto xdr_error;
4247 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4248 goto xdr_error;
4249 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4250 goto xdr_error;
4251 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4252 goto xdr_error;
4253
4254 status = verify_attr_len(xdr, savep, attrlen);
4255xdr_error:
4256 dprintk("%s: xdr returned %d!\n", __func__, -status);
4257 return status;
4258}
4259
4260static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4261{
4262 __be32 *savep;
4263 uint32_t attrlen, bitmap[3] = {0};
4264 int status;
4265
4266 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4267 goto xdr_error;
4268 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4269 goto xdr_error;
4270 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4271 goto xdr_error;
4272
4273 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4274 goto xdr_error;
4275 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4276 goto xdr_error;
4277
4278 status = verify_attr_len(xdr, savep, attrlen);
4279xdr_error:
4280 dprintk("%s: xdr returned %d!\n", __func__, -status);
4281 return status;
4282}
4283
4284static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4285 struct nfs_fattr *fattr, struct nfs_fh *fh,
4286 const struct nfs_server *server, int may_sleep)
4287{
4288 int status;
4289 umode_t fmode = 0;
4290 uint32_t type;
4291 int32_t err;
4292
4293 status = decode_attr_type(xdr, bitmap, &type);
4294 if (status < 0)
4295 goto xdr_error;
4296 fattr->mode = 0;
4297 if (status != 0) {
4298 fattr->mode |= nfs_type2fmt[type];
4299 fattr->valid |= status;
4300 }
4301
4302 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4303 if (status < 0)
4304 goto xdr_error;
4305 fattr->valid |= status;
4306
4307 status = decode_attr_size(xdr, bitmap, &fattr->size);
4308 if (status < 0)
4309 goto xdr_error;
4310 fattr->valid |= status;
4311
4312 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4313 if (status < 0)
4314 goto xdr_error;
4315 fattr->valid |= status;
4316
4317 err = 0;
4318 status = decode_attr_error(xdr, bitmap, &err);
4319 if (status < 0)
4320 goto xdr_error;
4321 if (err == -NFS4ERR_WRONGSEC)
4322 nfs_fixup_secinfo_attributes(fattr, fh);
4323
4324 status = decode_attr_filehandle(xdr, bitmap, fh);
4325 if (status < 0)
4326 goto xdr_error;
4327
4328 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4329 if (status < 0)
4330 goto xdr_error;
4331 fattr->valid |= status;
4332
4333 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
4334 struct nfs4_fs_locations,
4335 fattr));
4336 if (status < 0)
4337 goto xdr_error;
4338 fattr->valid |= status;
4339
4340 status = decode_attr_mode(xdr, bitmap, &fmode);
4341 if (status < 0)
4342 goto xdr_error;
4343 if (status != 0) {
4344 fattr->mode |= fmode;
4345 fattr->valid |= status;
4346 }
4347
4348 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4349 if (status < 0)
4350 goto xdr_error;
4351 fattr->valid |= status;
4352
4353 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, may_sleep);
4354 if (status < 0)
4355 goto xdr_error;
4356 fattr->valid |= status;
4357
4358 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, may_sleep);
4359 if (status < 0)
4360 goto xdr_error;
4361 fattr->valid |= status;
4362
4363 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4364 if (status < 0)
4365 goto xdr_error;
4366 fattr->valid |= status;
4367
4368 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4369 if (status < 0)
4370 goto xdr_error;
4371 fattr->valid |= status;
4372
4373 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4374 if (status < 0)
4375 goto xdr_error;
4376 fattr->valid |= status;
4377
4378 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4379 if (status < 0)
4380 goto xdr_error;
4381 fattr->valid |= status;
4382
4383 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4384 if (status < 0)
4385 goto xdr_error;
4386 fattr->valid |= status;
4387
4388 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4389 if (status < 0)
4390 goto xdr_error;
4391 fattr->valid |= status;
4392
4393xdr_error:
4394 dprintk("%s: xdr returned %d\n", __func__, -status);
4395 return status;
4396}
4397
4398static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4399 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
4400{
4401 __be32 *savep;
4402 uint32_t attrlen,
4403 bitmap[3] = {0};
4404 int status;
4405
4406 status = decode_op_hdr(xdr, OP_GETATTR);
4407 if (status < 0)
4408 goto xdr_error;
4409
4410 status = decode_attr_bitmap(xdr, bitmap);
4411 if (status < 0)
4412 goto xdr_error;
4413
4414 status = decode_attr_length(xdr, &attrlen, &savep);
4415 if (status < 0)
4416 goto xdr_error;
4417
4418 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
4419 if (status < 0)
4420 goto xdr_error;
4421
4422 status = verify_attr_len(xdr, savep, attrlen);
4423xdr_error:
4424 dprintk("%s: xdr returned %d\n", __func__, -status);
4425 return status;
4426}
4427
4428static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4429 const struct nfs_server *server, int may_sleep)
4430{
4431 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
4432}
4433
4434/*
4435 * Decode potentially multiple layout types. Currently we only support
4436 * one layout driver per file system.
4437 */
4438static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4439 uint32_t *layouttype)
4440{
4441 uint32_t *p;
4442 int num;
4443
4444 p = xdr_inline_decode(xdr, 4);
4445 if (unlikely(!p))
4446 goto out_overflow;
4447 num = be32_to_cpup(p);
4448
4449 /* pNFS is not supported by the underlying file system */
4450 if (num == 0) {
4451 *layouttype = 0;
4452 return 0;
4453 }
4454 if (num > 1)
4455 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
4456 "per filesystem not supported\n", __func__);
4457
4458 /* Decode and set first layout type, move xdr->p past unused types */
4459 p = xdr_inline_decode(xdr, num * 4);
4460 if (unlikely(!p))
4461 goto out_overflow;
4462 *layouttype = be32_to_cpup(p);
4463 return 0;
4464out_overflow:
4465 print_overflow_msg(__func__, xdr);
4466 return -EIO;
4467}
4468
4469/*
4470 * The type of file system exported.
4471 * Note we must ensure that layouttype is set in any non-error case.
4472 */
4473static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4474 uint32_t *layouttype)
4475{
4476 int status = 0;
4477
4478 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4479 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4480 return -EIO;
4481 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4482 status = decode_first_pnfs_layout_type(xdr, layouttype);
4483 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4484 } else
4485 *layouttype = 0;
4486 return status;
4487}
4488
4489/*
4490 * The prefered block size for layout directed io
4491 */
4492static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4493 uint32_t *res)
4494{
4495 __be32 *p;
4496
4497 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4498 *res = 0;
4499 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4500 p = xdr_inline_decode(xdr, 4);
4501 if (unlikely(!p)) {
4502 print_overflow_msg(__func__, xdr);
4503 return -EIO;
4504 }
4505 *res = be32_to_cpup(p);
4506 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4507 }
4508 return 0;
4509}
4510
4511static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4512{
4513 __be32 *savep;
4514 uint32_t attrlen, bitmap[3];
4515 int status;
4516
4517 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4518 goto xdr_error;
4519 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4520 goto xdr_error;
4521 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4522 goto xdr_error;
4523
4524 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4525
4526 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4527 goto xdr_error;
4528 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4529 goto xdr_error;
4530 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4531 goto xdr_error;
4532 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4533 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4534 goto xdr_error;
4535 fsinfo->wtpref = fsinfo->wtmax;
4536 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4537 if (status != 0)
4538 goto xdr_error;
4539 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4540 if (status != 0)
4541 goto xdr_error;
4542 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4543 if (status)
4544 goto xdr_error;
4545
4546 status = verify_attr_len(xdr, savep, attrlen);
4547xdr_error:
4548 dprintk("%s: xdr returned %d!\n", __func__, -status);
4549 return status;
4550}
4551
4552static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4553{
4554 __be32 *p;
4555 uint32_t len;
4556 int status;
4557
4558 /* Zero handle first to allow comparisons */
4559 memset(fh, 0, sizeof(*fh));
4560
4561 status = decode_op_hdr(xdr, OP_GETFH);
4562 if (status)
4563 return status;
4564
4565 p = xdr_inline_decode(xdr, 4);
4566 if (unlikely(!p))
4567 goto out_overflow;
4568 len = be32_to_cpup(p);
4569 if (len > NFS4_FHSIZE)
4570 return -EIO;
4571 fh->size = len;
4572 p = xdr_inline_decode(xdr, len);
4573 if (unlikely(!p))
4574 goto out_overflow;
4575 memcpy(fh->data, p, len);
4576 return 0;
4577out_overflow:
4578 print_overflow_msg(__func__, xdr);
4579 return -EIO;
4580}
4581
4582static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4583{
4584 int status;
4585
4586 status = decode_op_hdr(xdr, OP_LINK);
4587 if (status)
4588 return status;
4589 return decode_change_info(xdr, cinfo);
4590}
4591
4592/*
4593 * We create the owner, so we know a proper owner.id length is 4.
4594 */
4595static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4596{
4597 uint64_t offset, length, clientid;
4598 __be32 *p;
4599 uint32_t namelen, type;
4600
4601 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4602 if (unlikely(!p))
4603 goto out_overflow;
4604 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4605 p = xdr_decode_hyper(p, &length);
4606 type = be32_to_cpup(p++); /* 4 byte read */
4607 if (fl != NULL) { /* manipulate file lock */
4608 fl->fl_start = (loff_t)offset;
4609 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4610 if (length == ~(uint64_t)0)
4611 fl->fl_end = OFFSET_MAX;
4612 fl->fl_type = F_WRLCK;
4613 if (type & 1)
4614 fl->fl_type = F_RDLCK;
4615 fl->fl_pid = 0;
4616 }
4617 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4618 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4619 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4620 if (likely(p))
4621 return -NFS4ERR_DENIED;
4622out_overflow:
4623 print_overflow_msg(__func__, xdr);
4624 return -EIO;
4625}
4626
4627static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4628{
4629 int status;
4630
4631 status = decode_op_hdr(xdr, OP_LOCK);
4632 if (status == -EIO)
4633 goto out;
4634 if (status == 0) {
4635 status = decode_stateid(xdr, &res->stateid);
4636 if (unlikely(status))
4637 goto out;
4638 } else if (status == -NFS4ERR_DENIED)
4639 status = decode_lock_denied(xdr, NULL);
4640 if (res->open_seqid != NULL)
4641 nfs_increment_open_seqid(status, res->open_seqid);
4642 nfs_increment_lock_seqid(status, res->lock_seqid);
4643out:
4644 return status;
4645}
4646
4647static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4648{
4649 int status;
4650 status = decode_op_hdr(xdr, OP_LOCKT);
4651 if (status == -NFS4ERR_DENIED)
4652 return decode_lock_denied(xdr, res->denied);
4653 return status;
4654}
4655
4656static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4657{
4658 int status;
4659
4660 status = decode_op_hdr(xdr, OP_LOCKU);
4661 if (status != -EIO)
4662 nfs_increment_lock_seqid(status, res->seqid);
4663 if (status == 0)
4664 status = decode_stateid(xdr, &res->stateid);
4665 return status;
4666}
4667
4668static int decode_release_lockowner(struct xdr_stream *xdr)
4669{
4670 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4671}
4672
4673static int decode_lookup(struct xdr_stream *xdr)
4674{
4675 return decode_op_hdr(xdr, OP_LOOKUP);
4676}
4677
4678/* This is too sick! */
4679static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4680{
4681 __be32 *p;
4682 uint32_t limit_type, nblocks, blocksize;
4683
4684 p = xdr_inline_decode(xdr, 12);
4685 if (unlikely(!p))
4686 goto out_overflow;
4687 limit_type = be32_to_cpup(p++);
4688 switch (limit_type) {
4689 case 1:
4690 xdr_decode_hyper(p, maxsize);
4691 break;
4692 case 2:
4693 nblocks = be32_to_cpup(p++);
4694 blocksize = be32_to_cpup(p);
4695 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4696 }
4697 return 0;
4698out_overflow:
4699 print_overflow_msg(__func__, xdr);
4700 return -EIO;
4701}
4702
4703static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4704{
4705 __be32 *p;
4706 uint32_t delegation_type;
4707 int status;
4708
4709 p = xdr_inline_decode(xdr, 4);
4710 if (unlikely(!p))
4711 goto out_overflow;
4712 delegation_type = be32_to_cpup(p);
4713 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4714 res->delegation_type = 0;
4715 return 0;
4716 }
4717 status = decode_stateid(xdr, &res->delegation);
4718 if (unlikely(status))
4719 return status;
4720 p = xdr_inline_decode(xdr, 4);
4721 if (unlikely(!p))
4722 goto out_overflow;
4723 res->do_recall = be32_to_cpup(p);
4724
4725 switch (delegation_type) {
4726 case NFS4_OPEN_DELEGATE_READ:
4727 res->delegation_type = FMODE_READ;
4728 break;
4729 case NFS4_OPEN_DELEGATE_WRITE:
4730 res->delegation_type = FMODE_WRITE|FMODE_READ;
4731 if (decode_space_limit(xdr, &res->maxsize) < 0)
4732 return -EIO;
4733 }
4734 return decode_ace(xdr, NULL, res->server->nfs_client);
4735out_overflow:
4736 print_overflow_msg(__func__, xdr);
4737 return -EIO;
4738}
4739
4740static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4741{
4742 __be32 *p;
4743 uint32_t savewords, bmlen, i;
4744 int status;
4745
4746 status = decode_op_hdr(xdr, OP_OPEN);
4747 if (status != -EIO)
4748 nfs_increment_open_seqid(status, res->seqid);
4749 if (!status)
4750 status = decode_stateid(xdr, &res->stateid);
4751 if (unlikely(status))
4752 return status;
4753
4754 decode_change_info(xdr, &res->cinfo);
4755
4756 p = xdr_inline_decode(xdr, 8);
4757 if (unlikely(!p))
4758 goto out_overflow;
4759 res->rflags = be32_to_cpup(p++);
4760 bmlen = be32_to_cpup(p);
4761 if (bmlen > 10)
4762 goto xdr_error;
4763
4764 p = xdr_inline_decode(xdr, bmlen << 2);
4765 if (unlikely(!p))
4766 goto out_overflow;
4767 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4768 for (i = 0; i < savewords; ++i)
4769 res->attrset[i] = be32_to_cpup(p++);
4770 for (; i < NFS4_BITMAP_SIZE; i++)
4771 res->attrset[i] = 0;
4772
4773 return decode_delegation(xdr, res);
4774xdr_error:
4775 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4776 return -EIO;
4777out_overflow:
4778 print_overflow_msg(__func__, xdr);
4779 return -EIO;
4780}
4781
4782static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4783{
4784 int status;
4785
4786 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4787 if (status != -EIO)
4788 nfs_increment_open_seqid(status, res->seqid);
4789 if (!status)
4790 status = decode_stateid(xdr, &res->stateid);
4791 return status;
4792}
4793
4794static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4795{
4796 int status;
4797
4798 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4799 if (status != -EIO)
4800 nfs_increment_open_seqid(status, res->seqid);
4801 if (!status)
4802 status = decode_stateid(xdr, &res->stateid);
4803 return status;
4804}
4805
4806static int decode_putfh(struct xdr_stream *xdr)
4807{
4808 return decode_op_hdr(xdr, OP_PUTFH);
4809}
4810
4811static int decode_putrootfh(struct xdr_stream *xdr)
4812{
4813 return decode_op_hdr(xdr, OP_PUTROOTFH);
4814}
4815
4816static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4817{
4818 struct kvec *iov = req->rq_rcv_buf.head;
4819 __be32 *p;
4820 uint32_t count, eof, recvd, hdrlen;
4821 int status;
4822
4823 status = decode_op_hdr(xdr, OP_READ);
4824 if (status)
4825 return status;
4826 p = xdr_inline_decode(xdr, 8);
4827 if (unlikely(!p))
4828 goto out_overflow;
4829 eof = be32_to_cpup(p++);
4830 count = be32_to_cpup(p);
4831 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
4832 recvd = req->rq_rcv_buf.len - hdrlen;
4833 if (count > recvd) {
4834 dprintk("NFS: server cheating in read reply: "
4835 "count %u > recvd %u\n", count, recvd);
4836 count = recvd;
4837 eof = 0;
4838 }
4839 xdr_read_pages(xdr, count);
4840 res->eof = eof;
4841 res->count = count;
4842 return 0;
4843out_overflow:
4844 print_overflow_msg(__func__, xdr);
4845 return -EIO;
4846}
4847
4848static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4849{
4850 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4851 struct kvec *iov = rcvbuf->head;
4852 size_t hdrlen;
4853 u32 recvd, pglen = rcvbuf->page_len;
4854 int status;
4855
4856 status = decode_op_hdr(xdr, OP_READDIR);
4857 if (!status)
4858 status = decode_verifier(xdr, readdir->verifier.data);
4859 if (unlikely(status))
4860 return status;
4861 dprintk("%s: verifier = %08x:%08x\n",
4862 __func__,
4863 ((u32 *)readdir->verifier.data)[0],
4864 ((u32 *)readdir->verifier.data)[1]);
4865
4866
4867 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4868 recvd = rcvbuf->len - hdrlen;
4869 if (pglen > recvd)
4870 pglen = recvd;
4871 xdr_read_pages(xdr, pglen);
4872
4873
4874 return pglen;
4875}
4876
4877static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4878{
4879 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4880 struct kvec *iov = rcvbuf->head;
4881 size_t hdrlen;
4882 u32 len, recvd;
4883 __be32 *p;
4884 int status;
4885
4886 status = decode_op_hdr(xdr, OP_READLINK);
4887 if (status)
4888 return status;
4889
4890 /* Convert length of symlink */
4891 p = xdr_inline_decode(xdr, 4);
4892 if (unlikely(!p))
4893 goto out_overflow;
4894 len = be32_to_cpup(p);
4895 if (len >= rcvbuf->page_len || len <= 0) {
4896 dprintk("nfs: server returned giant symlink!\n");
4897 return -ENAMETOOLONG;
4898 }
4899 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4900 recvd = req->rq_rcv_buf.len - hdrlen;
4901 if (recvd < len) {
4902 dprintk("NFS: server cheating in readlink reply: "
4903 "count %u > recvd %u\n", len, recvd);
4904 return -EIO;
4905 }
4906 xdr_read_pages(xdr, len);
4907 /*
4908 * The XDR encode routine has set things up so that
4909 * the link text will be copied directly into the
4910 * buffer. We just have to do overflow-checking,
4911 * and and null-terminate the text (the VFS expects
4912 * null-termination).
4913 */
4914 xdr_terminate_string(rcvbuf, len);
4915 return 0;
4916out_overflow:
4917 print_overflow_msg(__func__, xdr);
4918 return -EIO;
4919}
4920
4921static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4922{
4923 int status;
4924
4925 status = decode_op_hdr(xdr, OP_REMOVE);
4926 if (status)
4927 goto out;
4928 status = decode_change_info(xdr, cinfo);
4929out:
4930 return status;
4931}
4932
4933static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4934 struct nfs4_change_info *new_cinfo)
4935{
4936 int status;
4937
4938 status = decode_op_hdr(xdr, OP_RENAME);
4939 if (status)
4940 goto out;
4941 if ((status = decode_change_info(xdr, old_cinfo)))
4942 goto out;
4943 status = decode_change_info(xdr, new_cinfo);
4944out:
4945 return status;
4946}
4947
4948static int decode_renew(struct xdr_stream *xdr)
4949{
4950 return decode_op_hdr(xdr, OP_RENEW);
4951}
4952
4953static int
4954decode_restorefh(struct xdr_stream *xdr)
4955{
4956 return decode_op_hdr(xdr, OP_RESTOREFH);
4957}
4958
4959static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4960 size_t *acl_len)
4961{
4962 __be32 *savep;
4963 uint32_t attrlen,
4964 bitmap[3] = {0};
4965 struct kvec *iov = req->rq_rcv_buf.head;
4966 int status;
4967
4968 *acl_len = 0;
4969 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4970 goto out;
4971 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4972 goto out;
4973 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4974 goto out;
4975
4976 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4977 return -EIO;
4978 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4979 size_t hdrlen;
4980 u32 recvd;
4981
4982 /* We ignore &savep and don't do consistency checks on
4983 * the attr length. Let userspace figure it out.... */
4984 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4985 recvd = req->rq_rcv_buf.len - hdrlen;
4986 if (attrlen > recvd) {
4987 dprintk("NFS: server cheating in getattr"
4988 " acl reply: attrlen %u > recvd %u\n",
4989 attrlen, recvd);
4990 return -EINVAL;
4991 }
4992 xdr_read_pages(xdr, attrlen);
4993 *acl_len = attrlen;
4994 } else
4995 status = -EOPNOTSUPP;
4996
4997out:
4998 return status;
4999}
5000
5001static int
5002decode_savefh(struct xdr_stream *xdr)
5003{
5004 return decode_op_hdr(xdr, OP_SAVEFH);
5005}
5006
5007static int decode_setattr(struct xdr_stream *xdr)
5008{
5009 __be32 *p;
5010 uint32_t bmlen;
5011 int status;
5012
5013 status = decode_op_hdr(xdr, OP_SETATTR);
5014 if (status)
5015 return status;
5016 p = xdr_inline_decode(xdr, 4);
5017 if (unlikely(!p))
5018 goto out_overflow;
5019 bmlen = be32_to_cpup(p);
5020 p = xdr_inline_decode(xdr, bmlen << 2);
5021 if (likely(p))
5022 return 0;
5023out_overflow:
5024 print_overflow_msg(__func__, xdr);
5025 return -EIO;
5026}
5027
5028static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5029{
5030 __be32 *p;
5031 uint32_t opnum;
5032 int32_t nfserr;
5033
5034 p = xdr_inline_decode(xdr, 8);
5035 if (unlikely(!p))
5036 goto out_overflow;
5037 opnum = be32_to_cpup(p++);
5038 if (opnum != OP_SETCLIENTID) {
5039 dprintk("nfs: decode_setclientid: Server returned operation"
5040 " %d\n", opnum);
5041 return -EIO;
5042 }
5043 nfserr = be32_to_cpup(p);
5044 if (nfserr == NFS_OK) {
5045 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5046 if (unlikely(!p))
5047 goto out_overflow;
5048 p = xdr_decode_hyper(p, &res->clientid);
5049 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5050 } else if (nfserr == NFSERR_CLID_INUSE) {
5051 uint32_t len;
5052
5053 /* skip netid string */
5054 p = xdr_inline_decode(xdr, 4);
5055 if (unlikely(!p))
5056 goto out_overflow;
5057 len = be32_to_cpup(p);
5058 p = xdr_inline_decode(xdr, len);
5059 if (unlikely(!p))
5060 goto out_overflow;
5061
5062 /* skip uaddr string */
5063 p = xdr_inline_decode(xdr, 4);
5064 if (unlikely(!p))
5065 goto out_overflow;
5066 len = be32_to_cpup(p);
5067 p = xdr_inline_decode(xdr, len);
5068 if (unlikely(!p))
5069 goto out_overflow;
5070 return -NFSERR_CLID_INUSE;
5071 } else
5072 return nfs4_stat_to_errno(nfserr);
5073
5074 return 0;
5075out_overflow:
5076 print_overflow_msg(__func__, xdr);
5077 return -EIO;
5078}
5079
5080static int decode_setclientid_confirm(struct xdr_stream *xdr)
5081{
5082 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5083}
5084
5085static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5086{
5087 __be32 *p;
5088 int status;
5089
5090 status = decode_op_hdr(xdr, OP_WRITE);
5091 if (status)
5092 return status;
5093
5094 p = xdr_inline_decode(xdr, 16);
5095 if (unlikely(!p))
5096 goto out_overflow;
5097 res->count = be32_to_cpup(p++);
5098 res->verf->committed = be32_to_cpup(p++);
5099 memcpy(res->verf->verifier, p, 8);
5100 return 0;
5101out_overflow:
5102 print_overflow_msg(__func__, xdr);
5103 return -EIO;
5104}
5105
5106static int decode_delegreturn(struct xdr_stream *xdr)
5107{
5108 return decode_op_hdr(xdr, OP_DELEGRETURN);
5109}
5110
5111static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5112{
5113 __be32 *p;
5114
5115 p = xdr_inline_decode(xdr, 4);
5116 if (unlikely(!p))
5117 goto out_overflow;
5118 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5119 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5120 goto out_err;
5121
5122 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5123 if (unlikely(!p))
5124 goto out_overflow;
5125 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5126
5127 p = xdr_inline_decode(xdr, 8);
5128 if (unlikely(!p))
5129 goto out_overflow;
5130 flavor->gss.qop4 = be32_to_cpup(p++);
5131 flavor->gss.service = be32_to_cpup(p);
5132
5133 return 0;
5134
5135out_overflow:
5136 print_overflow_msg(__func__, xdr);
5137 return -EIO;
5138out_err:
5139 return -EINVAL;
5140}
5141
5142static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5143{
5144 struct nfs4_secinfo_flavor *sec_flavor;
5145 int status;
5146 __be32 *p;
5147 int i, num_flavors;
5148
5149 status = decode_op_hdr(xdr, OP_SECINFO);
5150 if (status)
5151 goto out;
5152 p = xdr_inline_decode(xdr, 4);
5153 if (unlikely(!p))
5154 goto out_overflow;
5155
5156 res->flavors->num_flavors = 0;
5157 num_flavors = be32_to_cpup(p);
5158
5159 for (i = 0; i < num_flavors; i++) {
5160 sec_flavor = &res->flavors->flavors[i];
5161 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5162 break;
5163
5164 p = xdr_inline_decode(xdr, 4);
5165 if (unlikely(!p))
5166 goto out_overflow;
5167 sec_flavor->flavor = be32_to_cpup(p);
5168
5169 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5170 status = decode_secinfo_gss(xdr, sec_flavor);
5171 if (status)
5172 goto out;
5173 }
5174 res->flavors->num_flavors++;
5175 }
5176
5177out:
5178 return status;
5179out_overflow:
5180 print_overflow_msg(__func__, xdr);
5181 return -EIO;
5182}
5183
5184#if defined(CONFIG_NFS_V4_1)
5185static int decode_exchange_id(struct xdr_stream *xdr,
5186 struct nfs41_exchange_id_res *res)
5187{
5188 __be32 *p;
5189 uint32_t dummy;
5190 char *dummy_str;
5191 int status;
5192 struct nfs_client *clp = res->client;
5193
5194 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5195 if (status)
5196 return status;
5197
5198 p = xdr_inline_decode(xdr, 8);
5199 if (unlikely(!p))
5200 goto out_overflow;
5201 xdr_decode_hyper(p, &clp->cl_clientid);
5202 p = xdr_inline_decode(xdr, 12);
5203 if (unlikely(!p))
5204 goto out_overflow;
5205 clp->cl_seqid = be32_to_cpup(p++);
5206 clp->cl_exchange_flags = be32_to_cpup(p++);
5207
5208 /* We ask for SP4_NONE */
5209 dummy = be32_to_cpup(p);
5210 if (dummy != SP4_NONE)
5211 return -EIO;
5212
5213 /* Throw away minor_id */
5214 p = xdr_inline_decode(xdr, 8);
5215 if (unlikely(!p))
5216 goto out_overflow;
5217
5218 /* Throw away Major id */
5219 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5220 if (unlikely(status))
5221 return status;
5222
5223 /* Save server_scope */
5224 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5225 if (unlikely(status))
5226 return status;
5227
5228 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5229 return -EIO;
5230
5231 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5232 res->server_scope->server_scope_sz = dummy;
5233
5234 /* Throw away Implementation id array */
5235 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5236 if (unlikely(status))
5237 return status;
5238
5239 return 0;
5240out_overflow:
5241 print_overflow_msg(__func__, xdr);
5242 return -EIO;
5243}
5244
5245static int decode_chan_attrs(struct xdr_stream *xdr,
5246 struct nfs4_channel_attrs *attrs)
5247{
5248 __be32 *p;
5249 u32 nr_attrs, val;
5250
5251 p = xdr_inline_decode(xdr, 28);
5252 if (unlikely(!p))
5253 goto out_overflow;
5254 val = be32_to_cpup(p++); /* headerpadsz */
5255 if (val)
5256 return -EINVAL; /* no support for header padding yet */
5257 attrs->max_rqst_sz = be32_to_cpup(p++);
5258 attrs->max_resp_sz = be32_to_cpup(p++);
5259 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5260 attrs->max_ops = be32_to_cpup(p++);
5261 attrs->max_reqs = be32_to_cpup(p++);
5262 nr_attrs = be32_to_cpup(p);
5263 if (unlikely(nr_attrs > 1)) {
5264 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
5265 __func__, nr_attrs);
5266 return -EINVAL;
5267 }
5268 if (nr_attrs == 1) {
5269 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5270 if (unlikely(!p))
5271 goto out_overflow;
5272 }
5273 return 0;
5274out_overflow:
5275 print_overflow_msg(__func__, xdr);
5276 return -EIO;
5277}
5278
5279static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5280{
5281 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5282}
5283
5284static int decode_create_session(struct xdr_stream *xdr,
5285 struct nfs41_create_session_res *res)
5286{
5287 __be32 *p;
5288 int status;
5289 struct nfs_client *clp = res->client;
5290 struct nfs4_session *session = clp->cl_session;
5291
5292 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5293 if (!status)
5294 status = decode_sessionid(xdr, &session->sess_id);
5295 if (unlikely(status))
5296 return status;
5297
5298 /* seqid, flags */
5299 p = xdr_inline_decode(xdr, 8);
5300 if (unlikely(!p))
5301 goto out_overflow;
5302 clp->cl_seqid = be32_to_cpup(p++);
5303 session->flags = be32_to_cpup(p);
5304
5305 /* Channel attributes */
5306 status = decode_chan_attrs(xdr, &session->fc_attrs);
5307 if (!status)
5308 status = decode_chan_attrs(xdr, &session->bc_attrs);
5309 return status;
5310out_overflow:
5311 print_overflow_msg(__func__, xdr);
5312 return -EIO;
5313}
5314
5315static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5316{
5317 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5318}
5319
5320static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5321{
5322 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5323}
5324#endif /* CONFIG_NFS_V4_1 */
5325
5326static int decode_sequence(struct xdr_stream *xdr,
5327 struct nfs4_sequence_res *res,
5328 struct rpc_rqst *rqstp)
5329{
5330#if defined(CONFIG_NFS_V4_1)
5331 struct nfs4_sessionid id;
5332 u32 dummy;
5333 int status;
5334 __be32 *p;
5335
5336 if (!res->sr_session)
5337 return 0;
5338
5339 status = decode_op_hdr(xdr, OP_SEQUENCE);
5340 if (!status)
5341 status = decode_sessionid(xdr, &id);
5342 if (unlikely(status))
5343 goto out_err;
5344
5345 /*
5346 * If the server returns different values for sessionID, slotID or
5347 * sequence number, the server is looney tunes.
5348 */
5349 status = -EREMOTEIO;
5350
5351 if (memcmp(id.data, res->sr_session->sess_id.data,
5352 NFS4_MAX_SESSIONID_LEN)) {
5353 dprintk("%s Invalid session id\n", __func__);
5354 goto out_err;
5355 }
5356
5357 p = xdr_inline_decode(xdr, 20);
5358 if (unlikely(!p))
5359 goto out_overflow;
5360
5361 /* seqid */
5362 dummy = be32_to_cpup(p++);
5363 if (dummy != res->sr_slot->seq_nr) {
5364 dprintk("%s Invalid sequence number\n", __func__);
5365 goto out_err;
5366 }
5367 /* slot id */
5368 dummy = be32_to_cpup(p++);
5369 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5370 dprintk("%s Invalid slot id\n", __func__);
5371 goto out_err;
5372 }
5373 /* highest slot id - currently not processed */
5374 dummy = be32_to_cpup(p++);
5375 /* target highest slot id - currently not processed */
5376 dummy = be32_to_cpup(p++);
5377 /* result flags */
5378 res->sr_status_flags = be32_to_cpup(p);
5379 status = 0;
5380out_err:
5381 res->sr_status = status;
5382 return status;
5383out_overflow:
5384 print_overflow_msg(__func__, xdr);
5385 status = -EIO;
5386 goto out_err;
5387#else /* CONFIG_NFS_V4_1 */
5388 return 0;
5389#endif /* CONFIG_NFS_V4_1 */
5390}
5391
5392#if defined(CONFIG_NFS_V4_1)
5393/*
5394 * TODO: Need to handle case when EOF != true;
5395 */
5396static int decode_getdevicelist(struct xdr_stream *xdr,
5397 struct pnfs_devicelist *res)
5398{
5399 __be32 *p;
5400 int status, i;
5401 struct nfs_writeverf verftemp;
5402
5403 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5404 if (status)
5405 return status;
5406
5407 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5408 if (unlikely(!p))
5409 goto out_overflow;
5410
5411 /* TODO: Skip cookie for now */
5412 p += 2;
5413
5414 /* Read verifier */
5415 p = xdr_decode_opaque_fixed(p, verftemp.verifier, 8);
5416
5417 res->num_devs = be32_to_cpup(p);
5418
5419 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5420
5421 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5422 printk(KERN_ERR "%s too many result dev_num %u\n",
5423 __func__, res->num_devs);
5424 return -EIO;
5425 }
5426
5427 p = xdr_inline_decode(xdr,
5428 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5429 if (unlikely(!p))
5430 goto out_overflow;
5431 for (i = 0; i < res->num_devs; i++)
5432 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5433 NFS4_DEVICEID4_SIZE);
5434 res->eof = be32_to_cpup(p);
5435 return 0;
5436out_overflow:
5437 print_overflow_msg(__func__, xdr);
5438 return -EIO;
5439}
5440
5441static int decode_getdeviceinfo(struct xdr_stream *xdr,
5442 struct pnfs_device *pdev)
5443{
5444 __be32 *p;
5445 uint32_t len, type;
5446 int status;
5447
5448 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5449 if (status) {
5450 if (status == -ETOOSMALL) {
5451 p = xdr_inline_decode(xdr, 4);
5452 if (unlikely(!p))
5453 goto out_overflow;
5454 pdev->mincount = be32_to_cpup(p);
5455 dprintk("%s: Min count too small. mincnt = %u\n",
5456 __func__, pdev->mincount);
5457 }
5458 return status;
5459 }
5460
5461 p = xdr_inline_decode(xdr, 8);
5462 if (unlikely(!p))
5463 goto out_overflow;
5464 type = be32_to_cpup(p++);
5465 if (type != pdev->layout_type) {
5466 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5467 __func__, pdev->layout_type, type);
5468 return -EINVAL;
5469 }
5470 /*
5471 * Get the length of the opaque device_addr4. xdr_read_pages places
5472 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5473 * and places the remaining xdr data in xdr_buf->tail
5474 */
5475 pdev->mincount = be32_to_cpup(p);
5476 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5477
5478 /* Parse notification bitmap, verifying that it is zero. */
5479 p = xdr_inline_decode(xdr, 4);
5480 if (unlikely(!p))
5481 goto out_overflow;
5482 len = be32_to_cpup(p);
5483 if (len) {
5484 uint32_t i;
5485
5486 p = xdr_inline_decode(xdr, 4 * len);
5487 if (unlikely(!p))
5488 goto out_overflow;
5489 for (i = 0; i < len; i++, p++) {
5490 if (be32_to_cpup(p)) {
5491 dprintk("%s: notifications not supported\n",
5492 __func__);
5493 return -EIO;
5494 }
5495 }
5496 }
5497 return 0;
5498out_overflow:
5499 print_overflow_msg(__func__, xdr);
5500 return -EIO;
5501}
5502
5503static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5504 struct nfs4_layoutget_res *res)
5505{
5506 __be32 *p;
5507 int status;
5508 u32 layout_count;
5509 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5510 struct kvec *iov = rcvbuf->head;
5511 u32 hdrlen, recvd;
5512
5513 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5514 if (status)
5515 return status;
5516 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
5517 if (unlikely(!p))
5518 goto out_overflow;
5519 res->return_on_close = be32_to_cpup(p++);
5520 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
5521 layout_count = be32_to_cpup(p);
5522 if (!layout_count) {
5523 dprintk("%s: server responded with empty layout array\n",
5524 __func__);
5525 return -EINVAL;
5526 }
5527
5528 p = xdr_inline_decode(xdr, 28);
5529 if (unlikely(!p))
5530 goto out_overflow;
5531 p = xdr_decode_hyper(p, &res->range.offset);
5532 p = xdr_decode_hyper(p, &res->range.length);
5533 res->range.iomode = be32_to_cpup(p++);
5534 res->type = be32_to_cpup(p++);
5535 res->layoutp->len = be32_to_cpup(p);
5536
5537 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5538 __func__,
5539 (unsigned long)res->range.offset,
5540 (unsigned long)res->range.length,
5541 res->range.iomode,
5542 res->type,
5543 res->layoutp->len);
5544
5545 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
5546 recvd = req->rq_rcv_buf.len - hdrlen;
5547 if (res->layoutp->len > recvd) {
5548 dprintk("NFS: server cheating in layoutget reply: "
5549 "layout len %u > recvd %u\n",
5550 res->layoutp->len, recvd);
5551 return -EINVAL;
5552 }
5553
5554 xdr_read_pages(xdr, res->layoutp->len);
5555
5556 if (layout_count > 1) {
5557 /* We only handle a length one array at the moment. Any
5558 * further entries are just ignored. Note that this means
5559 * the client may see a response that is less than the
5560 * minimum it requested.
5561 */
5562 dprintk("%s: server responded with %d layouts, dropping tail\n",
5563 __func__, layout_count);
5564 }
5565
5566 return 0;
5567out_overflow:
5568 print_overflow_msg(__func__, xdr);
5569 return -EIO;
5570}
5571
5572static int decode_layoutreturn(struct xdr_stream *xdr,
5573 struct nfs4_layoutreturn_res *res)
5574{
5575 __be32 *p;
5576 int status;
5577
5578 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5579 if (status)
5580 return status;
5581 p = xdr_inline_decode(xdr, 4);
5582 if (unlikely(!p))
5583 goto out_overflow;
5584 res->lrs_present = be32_to_cpup(p);
5585 if (res->lrs_present)
5586 status = decode_stateid(xdr, &res->stateid);
5587 return status;
5588out_overflow:
5589 print_overflow_msg(__func__, xdr);
5590 return -EIO;
5591}
5592
5593static int decode_layoutcommit(struct xdr_stream *xdr,
5594 struct rpc_rqst *req,
5595 struct nfs4_layoutcommit_res *res)
5596{
5597 __be32 *p;
5598 __u32 sizechanged;
5599 int status;
5600
5601 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5602 res->status = status;
5603 if (status)
5604 return status;
5605
5606 p = xdr_inline_decode(xdr, 4);
5607 if (unlikely(!p))
5608 goto out_overflow;
5609 sizechanged = be32_to_cpup(p);
5610
5611 if (sizechanged) {
5612 /* throw away new size */
5613 p = xdr_inline_decode(xdr, 8);
5614 if (unlikely(!p))
5615 goto out_overflow;
5616 }
5617 return 0;
5618out_overflow:
5619 print_overflow_msg(__func__, xdr);
5620 return -EIO;
5621}
5622
5623static int decode_test_stateid(struct xdr_stream *xdr,
5624 struct nfs41_test_stateid_res *res)
5625{
5626 __be32 *p;
5627 int status;
5628 int num_res;
5629
5630 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5631 if (status)
5632 return status;
5633
5634 p = xdr_inline_decode(xdr, 4);
5635 if (unlikely(!p))
5636 goto out_overflow;
5637 num_res = be32_to_cpup(p++);
5638 if (num_res != 1)
5639 goto out;
5640
5641 p = xdr_inline_decode(xdr, 4);
5642 if (unlikely(!p))
5643 goto out_overflow;
5644 res->status = be32_to_cpup(p++);
5645 return res->status;
5646out_overflow:
5647 print_overflow_msg(__func__, xdr);
5648out:
5649 return -EIO;
5650}
5651
5652static int decode_free_stateid(struct xdr_stream *xdr,
5653 struct nfs41_free_stateid_res *res)
5654{
5655 __be32 *p;
5656 int status;
5657
5658 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5659 if (status)
5660 return status;
5661
5662 p = xdr_inline_decode(xdr, 4);
5663 if (unlikely(!p))
5664 goto out_overflow;
5665 res->status = be32_to_cpup(p++);
5666 return res->status;
5667out_overflow:
5668 print_overflow_msg(__func__, xdr);
5669 return -EIO;
5670}
5671#endif /* CONFIG_NFS_V4_1 */
5672
5673/*
5674 * END OF "GENERIC" DECODE ROUTINES.
5675 */
5676
5677/*
5678 * Decode OPEN_DOWNGRADE response
5679 */
5680static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5681 struct xdr_stream *xdr,
5682 struct nfs_closeres *res)
5683{
5684 struct compound_hdr hdr;
5685 int status;
5686
5687 status = decode_compound_hdr(xdr, &hdr);
5688 if (status)
5689 goto out;
5690 status = decode_sequence(xdr, &res->seq_res, rqstp);
5691 if (status)
5692 goto out;
5693 status = decode_putfh(xdr);
5694 if (status)
5695 goto out;
5696 status = decode_open_downgrade(xdr, res);
5697 if (status != 0)
5698 goto out;
5699 decode_getfattr(xdr, res->fattr, res->server,
5700 !RPC_IS_ASYNC(rqstp->rq_task));
5701out:
5702 return status;
5703}
5704
5705/*
5706 * Decode ACCESS response
5707 */
5708static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5709 struct nfs4_accessres *res)
5710{
5711 struct compound_hdr hdr;
5712 int status;
5713
5714 status = decode_compound_hdr(xdr, &hdr);
5715 if (status)
5716 goto out;
5717 status = decode_sequence(xdr, &res->seq_res, rqstp);
5718 if (status)
5719 goto out;
5720 status = decode_putfh(xdr);
5721 if (status != 0)
5722 goto out;
5723 status = decode_access(xdr, res);
5724 if (status != 0)
5725 goto out;
5726 decode_getfattr(xdr, res->fattr, res->server,
5727 !RPC_IS_ASYNC(rqstp->rq_task));
5728out:
5729 return status;
5730}
5731
5732/*
5733 * Decode LOOKUP response
5734 */
5735static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5736 struct nfs4_lookup_res *res)
5737{
5738 struct compound_hdr hdr;
5739 int status;
5740
5741 status = decode_compound_hdr(xdr, &hdr);
5742 if (status)
5743 goto out;
5744 status = decode_sequence(xdr, &res->seq_res, rqstp);
5745 if (status)
5746 goto out;
5747 status = decode_putfh(xdr);
5748 if (status)
5749 goto out;
5750 status = decode_lookup(xdr);
5751 if (status)
5752 goto out;
5753 status = decode_getfh(xdr, res->fh);
5754 if (status)
5755 goto out;
5756 status = decode_getfattr(xdr, res->fattr, res->server
5757 ,!RPC_IS_ASYNC(rqstp->rq_task));
5758out:
5759 return status;
5760}
5761
5762/*
5763 * Decode LOOKUP_ROOT response
5764 */
5765static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5766 struct xdr_stream *xdr,
5767 struct nfs4_lookup_res *res)
5768{
5769 struct compound_hdr hdr;
5770 int status;
5771
5772 status = decode_compound_hdr(xdr, &hdr);
5773 if (status)
5774 goto out;
5775 status = decode_sequence(xdr, &res->seq_res, rqstp);
5776 if (status)
5777 goto out;
5778 status = decode_putrootfh(xdr);
5779 if (status)
5780 goto out;
5781 status = decode_getfh(xdr, res->fh);
5782 if (status == 0)
5783 status = decode_getfattr(xdr, res->fattr, res->server,
5784 !RPC_IS_ASYNC(rqstp->rq_task));
5785out:
5786 return status;
5787}
5788
5789/*
5790 * Decode REMOVE response
5791 */
5792static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5793 struct nfs_removeres *res)
5794{
5795 struct compound_hdr hdr;
5796 int status;
5797
5798 status = decode_compound_hdr(xdr, &hdr);
5799 if (status)
5800 goto out;
5801 status = decode_sequence(xdr, &res->seq_res, rqstp);
5802 if (status)
5803 goto out;
5804 status = decode_putfh(xdr);
5805 if (status)
5806 goto out;
5807 status = decode_remove(xdr, &res->cinfo);
5808 if (status)
5809 goto out;
5810 decode_getfattr(xdr, res->dir_attr, res->server,
5811 !RPC_IS_ASYNC(rqstp->rq_task));
5812out:
5813 return status;
5814}
5815
5816/*
5817 * Decode RENAME response
5818 */
5819static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5820 struct nfs_renameres *res)
5821{
5822 struct compound_hdr hdr;
5823 int status;
5824
5825 status = decode_compound_hdr(xdr, &hdr);
5826 if (status)
5827 goto out;
5828 status = decode_sequence(xdr, &res->seq_res, rqstp);
5829 if (status)
5830 goto out;
5831 status = decode_putfh(xdr);
5832 if (status)
5833 goto out;
5834 status = decode_savefh(xdr);
5835 if (status)
5836 goto out;
5837 status = decode_putfh(xdr);
5838 if (status)
5839 goto out;
5840 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
5841 if (status)
5842 goto out;
5843 /* Current FH is target directory */
5844 if (decode_getfattr(xdr, res->new_fattr, res->server,
5845 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5846 goto out;
5847 status = decode_restorefh(xdr);
5848 if (status)
5849 goto out;
5850 decode_getfattr(xdr, res->old_fattr, res->server,
5851 !RPC_IS_ASYNC(rqstp->rq_task));
5852out:
5853 return status;
5854}
5855
5856/*
5857 * Decode LINK response
5858 */
5859static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5860 struct nfs4_link_res *res)
5861{
5862 struct compound_hdr hdr;
5863 int status;
5864
5865 status = decode_compound_hdr(xdr, &hdr);
5866 if (status)
5867 goto out;
5868 status = decode_sequence(xdr, &res->seq_res, rqstp);
5869 if (status)
5870 goto out;
5871 status = decode_putfh(xdr);
5872 if (status)
5873 goto out;
5874 status = decode_savefh(xdr);
5875 if (status)
5876 goto out;
5877 status = decode_putfh(xdr);
5878 if (status)
5879 goto out;
5880 status = decode_link(xdr, &res->cinfo);
5881 if (status)
5882 goto out;
5883 /*
5884 * Note order: OP_LINK leaves the directory as the current
5885 * filehandle.
5886 */
5887 if (decode_getfattr(xdr, res->dir_attr, res->server,
5888 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5889 goto out;
5890 status = decode_restorefh(xdr);
5891 if (status)
5892 goto out;
5893 decode_getfattr(xdr, res->fattr, res->server,
5894 !RPC_IS_ASYNC(rqstp->rq_task));
5895out:
5896 return status;
5897}
5898
5899/*
5900 * Decode CREATE response
5901 */
5902static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5903 struct nfs4_create_res *res)
5904{
5905 struct compound_hdr hdr;
5906 int status;
5907
5908 status = decode_compound_hdr(xdr, &hdr);
5909 if (status)
5910 goto out;
5911 status = decode_sequence(xdr, &res->seq_res, rqstp);
5912 if (status)
5913 goto out;
5914 status = decode_putfh(xdr);
5915 if (status)
5916 goto out;
5917 status = decode_savefh(xdr);
5918 if (status)
5919 goto out;
5920 status = decode_create(xdr, &res->dir_cinfo);
5921 if (status)
5922 goto out;
5923 status = decode_getfh(xdr, res->fh);
5924 if (status)
5925 goto out;
5926 if (decode_getfattr(xdr, res->fattr, res->server,
5927 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5928 goto out;
5929 status = decode_restorefh(xdr);
5930 if (status)
5931 goto out;
5932 decode_getfattr(xdr, res->dir_fattr, res->server,
5933 !RPC_IS_ASYNC(rqstp->rq_task));
5934out:
5935 return status;
5936}
5937
5938/*
5939 * Decode SYMLINK response
5940 */
5941static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5942 struct nfs4_create_res *res)
5943{
5944 return nfs4_xdr_dec_create(rqstp, xdr, res);
5945}
5946
5947/*
5948 * Decode GETATTR response
5949 */
5950static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5951 struct nfs4_getattr_res *res)
5952{
5953 struct compound_hdr hdr;
5954 int status;
5955
5956 status = decode_compound_hdr(xdr, &hdr);
5957 if (status)
5958 goto out;
5959 status = decode_sequence(xdr, &res->seq_res, rqstp);
5960 if (status)
5961 goto out;
5962 status = decode_putfh(xdr);
5963 if (status)
5964 goto out;
5965 status = decode_getfattr(xdr, res->fattr, res->server,
5966 !RPC_IS_ASYNC(rqstp->rq_task));
5967out:
5968 return status;
5969}
5970
5971/*
5972 * Encode an SETACL request
5973 */
5974static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
5975 struct nfs_setaclargs *args)
5976{
5977 struct compound_hdr hdr = {
5978 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
5979 };
5980
5981 encode_compound_hdr(xdr, req, &hdr);
5982 encode_sequence(xdr, &args->seq_args, &hdr);
5983 encode_putfh(xdr, args->fh, &hdr);
5984 encode_setacl(xdr, args, &hdr);
5985 encode_nops(&hdr);
5986}
5987
5988/*
5989 * Decode SETACL response
5990 */
5991static int
5992nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5993 struct nfs_setaclres *res)
5994{
5995 struct compound_hdr hdr;
5996 int status;
5997
5998 status = decode_compound_hdr(xdr, &hdr);
5999 if (status)
6000 goto out;
6001 status = decode_sequence(xdr, &res->seq_res, rqstp);
6002 if (status)
6003 goto out;
6004 status = decode_putfh(xdr);
6005 if (status)
6006 goto out;
6007 status = decode_setattr(xdr);
6008out:
6009 return status;
6010}
6011
6012/*
6013 * Decode GETACL response
6014 */
6015static int
6016nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6017 struct nfs_getaclres *res)
6018{
6019 struct compound_hdr hdr;
6020 int status;
6021
6022 status = decode_compound_hdr(xdr, &hdr);
6023 if (status)
6024 goto out;
6025 status = decode_sequence(xdr, &res->seq_res, rqstp);
6026 if (status)
6027 goto out;
6028 status = decode_putfh(xdr);
6029 if (status)
6030 goto out;
6031 status = decode_getacl(xdr, rqstp, &res->acl_len);
6032
6033out:
6034 return status;
6035}
6036
6037/*
6038 * Decode CLOSE response
6039 */
6040static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6041 struct nfs_closeres *res)
6042{
6043 struct compound_hdr hdr;
6044 int status;
6045
6046 status = decode_compound_hdr(xdr, &hdr);
6047 if (status)
6048 goto out;
6049 status = decode_sequence(xdr, &res->seq_res, rqstp);
6050 if (status)
6051 goto out;
6052 status = decode_putfh(xdr);
6053 if (status)
6054 goto out;
6055 status = decode_close(xdr, res);
6056 if (status != 0)
6057 goto out;
6058 /*
6059 * Note: Server may do delete on close for this file
6060 * in which case the getattr call will fail with
6061 * an ESTALE error. Shouldn't be a problem,
6062 * though, since fattr->valid will remain unset.
6063 */
6064 decode_getfattr(xdr, res->fattr, res->server,
6065 !RPC_IS_ASYNC(rqstp->rq_task));
6066out:
6067 return status;
6068}
6069
6070/*
6071 * Decode OPEN response
6072 */
6073static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6074 struct nfs_openres *res)
6075{
6076 struct compound_hdr hdr;
6077 int status;
6078
6079 status = decode_compound_hdr(xdr, &hdr);
6080 if (status)
6081 goto out;
6082 status = decode_sequence(xdr, &res->seq_res, rqstp);
6083 if (status)
6084 goto out;
6085 status = decode_putfh(xdr);
6086 if (status)
6087 goto out;
6088 status = decode_savefh(xdr);
6089 if (status)
6090 goto out;
6091 status = decode_open(xdr, res);
6092 if (status)
6093 goto out;
6094 if (decode_getfh(xdr, &res->fh) != 0)
6095 goto out;
6096 if (decode_getfattr(xdr, res->f_attr, res->server,
6097 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
6098 goto out;
6099 if (decode_restorefh(xdr) != 0)
6100 goto out;
6101 decode_getfattr(xdr, res->dir_attr, res->server,
6102 !RPC_IS_ASYNC(rqstp->rq_task));
6103out:
6104 return status;
6105}
6106
6107/*
6108 * Decode OPEN_CONFIRM response
6109 */
6110static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6111 struct xdr_stream *xdr,
6112 struct nfs_open_confirmres *res)
6113{
6114 struct compound_hdr hdr;
6115 int status;
6116
6117 status = decode_compound_hdr(xdr, &hdr);
6118 if (status)
6119 goto out;
6120 status = decode_putfh(xdr);
6121 if (status)
6122 goto out;
6123 status = decode_open_confirm(xdr, res);
6124out:
6125 return status;
6126}
6127
6128/*
6129 * Decode OPEN response
6130 */
6131static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6132 struct xdr_stream *xdr,
6133 struct nfs_openres *res)
6134{
6135 struct compound_hdr hdr;
6136 int status;
6137
6138 status = decode_compound_hdr(xdr, &hdr);
6139 if (status)
6140 goto out;
6141 status = decode_sequence(xdr, &res->seq_res, rqstp);
6142 if (status)
6143 goto out;
6144 status = decode_putfh(xdr);
6145 if (status)
6146 goto out;
6147 status = decode_open(xdr, res);
6148 if (status)
6149 goto out;
6150 decode_getfattr(xdr, res->f_attr, res->server,
6151 !RPC_IS_ASYNC(rqstp->rq_task));
6152out:
6153 return status;
6154}
6155
6156/*
6157 * Decode SETATTR response
6158 */
6159static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6160 struct xdr_stream *xdr,
6161 struct nfs_setattrres *res)
6162{
6163 struct compound_hdr hdr;
6164 int status;
6165
6166 status = decode_compound_hdr(xdr, &hdr);
6167 if (status)
6168 goto out;
6169 status = decode_sequence(xdr, &res->seq_res, rqstp);
6170 if (status)
6171 goto out;
6172 status = decode_putfh(xdr);
6173 if (status)
6174 goto out;
6175 status = decode_setattr(xdr);
6176 if (status)
6177 goto out;
6178 decode_getfattr(xdr, res->fattr, res->server,
6179 !RPC_IS_ASYNC(rqstp->rq_task));
6180out:
6181 return status;
6182}
6183
6184/*
6185 * Decode LOCK response
6186 */
6187static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6188 struct nfs_lock_res *res)
6189{
6190 struct compound_hdr hdr;
6191 int status;
6192
6193 status = decode_compound_hdr(xdr, &hdr);
6194 if (status)
6195 goto out;
6196 status = decode_sequence(xdr, &res->seq_res, rqstp);
6197 if (status)
6198 goto out;
6199 status = decode_putfh(xdr);
6200 if (status)
6201 goto out;
6202 status = decode_lock(xdr, res);
6203out:
6204 return status;
6205}
6206
6207/*
6208 * Decode LOCKT response
6209 */
6210static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6211 struct nfs_lockt_res *res)
6212{
6213 struct compound_hdr hdr;
6214 int status;
6215
6216 status = decode_compound_hdr(xdr, &hdr);
6217 if (status)
6218 goto out;
6219 status = decode_sequence(xdr, &res->seq_res, rqstp);
6220 if (status)
6221 goto out;
6222 status = decode_putfh(xdr);
6223 if (status)
6224 goto out;
6225 status = decode_lockt(xdr, res);
6226out:
6227 return status;
6228}
6229
6230/*
6231 * Decode LOCKU response
6232 */
6233static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6234 struct nfs_locku_res *res)
6235{
6236 struct compound_hdr hdr;
6237 int status;
6238
6239 status = decode_compound_hdr(xdr, &hdr);
6240 if (status)
6241 goto out;
6242 status = decode_sequence(xdr, &res->seq_res, rqstp);
6243 if (status)
6244 goto out;
6245 status = decode_putfh(xdr);
6246 if (status)
6247 goto out;
6248 status = decode_locku(xdr, res);
6249out:
6250 return status;
6251}
6252
6253static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6254 struct xdr_stream *xdr, void *dummy)
6255{
6256 struct compound_hdr hdr;
6257 int status;
6258
6259 status = decode_compound_hdr(xdr, &hdr);
6260 if (!status)
6261 status = decode_release_lockowner(xdr);
6262 return status;
6263}
6264
6265/*
6266 * Decode READLINK response
6267 */
6268static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6269 struct xdr_stream *xdr,
6270 struct nfs4_readlink_res *res)
6271{
6272 struct compound_hdr hdr;
6273 int status;
6274
6275 status = decode_compound_hdr(xdr, &hdr);
6276 if (status)
6277 goto out;
6278 status = decode_sequence(xdr, &res->seq_res, rqstp);
6279 if (status)
6280 goto out;
6281 status = decode_putfh(xdr);
6282 if (status)
6283 goto out;
6284 status = decode_readlink(xdr, rqstp);
6285out:
6286 return status;
6287}
6288
6289/*
6290 * Decode READDIR response
6291 */
6292static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6293 struct nfs4_readdir_res *res)
6294{
6295 struct compound_hdr hdr;
6296 int status;
6297
6298 status = decode_compound_hdr(xdr, &hdr);
6299 if (status)
6300 goto out;
6301 status = decode_sequence(xdr, &res->seq_res, rqstp);
6302 if (status)
6303 goto out;
6304 status = decode_putfh(xdr);
6305 if (status)
6306 goto out;
6307 status = decode_readdir(xdr, rqstp, res);
6308out:
6309 return status;
6310}
6311
6312/*
6313 * Decode Read response
6314 */
6315static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6316 struct nfs_readres *res)
6317{
6318 struct compound_hdr hdr;
6319 int status;
6320
6321 status = decode_compound_hdr(xdr, &hdr);
6322 if (status)
6323 goto out;
6324 status = decode_sequence(xdr, &res->seq_res, rqstp);
6325 if (status)
6326 goto out;
6327 status = decode_putfh(xdr);
6328 if (status)
6329 goto out;
6330 status = decode_read(xdr, rqstp, res);
6331 if (!status)
6332 status = res->count;
6333out:
6334 return status;
6335}
6336
6337/*
6338 * Decode WRITE response
6339 */
6340static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6341 struct nfs_writeres *res)
6342{
6343 struct compound_hdr hdr;
6344 int status;
6345
6346 status = decode_compound_hdr(xdr, &hdr);
6347 if (status)
6348 goto out;
6349 status = decode_sequence(xdr, &res->seq_res, rqstp);
6350 if (status)
6351 goto out;
6352 status = decode_putfh(xdr);
6353 if (status)
6354 goto out;
6355 status = decode_write(xdr, res);
6356 if (status)
6357 goto out;
6358 if (res->fattr)
6359 decode_getfattr(xdr, res->fattr, res->server,
6360 !RPC_IS_ASYNC(rqstp->rq_task));
6361 if (!status)
6362 status = res->count;
6363out:
6364 return status;
6365}
6366
6367/*
6368 * Decode COMMIT response
6369 */
6370static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6371 struct nfs_writeres *res)
6372{
6373 struct compound_hdr hdr;
6374 int status;
6375
6376 status = decode_compound_hdr(xdr, &hdr);
6377 if (status)
6378 goto out;
6379 status = decode_sequence(xdr, &res->seq_res, rqstp);
6380 if (status)
6381 goto out;
6382 status = decode_putfh(xdr);
6383 if (status)
6384 goto out;
6385 status = decode_commit(xdr, res);
6386 if (status)
6387 goto out;
6388 if (res->fattr)
6389 decode_getfattr(xdr, res->fattr, res->server,
6390 !RPC_IS_ASYNC(rqstp->rq_task));
6391out:
6392 return status;
6393}
6394
6395/*
6396 * Decode FSINFO response
6397 */
6398static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6399 struct nfs4_fsinfo_res *res)
6400{
6401 struct compound_hdr hdr;
6402 int status;
6403
6404 status = decode_compound_hdr(xdr, &hdr);
6405 if (!status)
6406 status = decode_sequence(xdr, &res->seq_res, req);
6407 if (!status)
6408 status = decode_putfh(xdr);
6409 if (!status)
6410 status = decode_fsinfo(xdr, res->fsinfo);
6411 return status;
6412}
6413
6414/*
6415 * Decode PATHCONF response
6416 */
6417static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6418 struct nfs4_pathconf_res *res)
6419{
6420 struct compound_hdr hdr;
6421 int status;
6422
6423 status = decode_compound_hdr(xdr, &hdr);
6424 if (!status)
6425 status = decode_sequence(xdr, &res->seq_res, req);
6426 if (!status)
6427 status = decode_putfh(xdr);
6428 if (!status)
6429 status = decode_pathconf(xdr, res->pathconf);
6430 return status;
6431}
6432
6433/*
6434 * Decode STATFS response
6435 */
6436static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6437 struct nfs4_statfs_res *res)
6438{
6439 struct compound_hdr hdr;
6440 int status;
6441
6442 status = decode_compound_hdr(xdr, &hdr);
6443 if (!status)
6444 status = decode_sequence(xdr, &res->seq_res, req);
6445 if (!status)
6446 status = decode_putfh(xdr);
6447 if (!status)
6448 status = decode_statfs(xdr, res->fsstat);
6449 return status;
6450}
6451
6452/*
6453 * Decode GETATTR_BITMAP response
6454 */
6455static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6456 struct xdr_stream *xdr,
6457 struct nfs4_server_caps_res *res)
6458{
6459 struct compound_hdr hdr;
6460 int status;
6461
6462 status = decode_compound_hdr(xdr, &hdr);
6463 if (status)
6464 goto out;
6465 status = decode_sequence(xdr, &res->seq_res, req);
6466 if (status)
6467 goto out;
6468 status = decode_putfh(xdr);
6469 if (status)
6470 goto out;
6471 status = decode_server_caps(xdr, res);
6472out:
6473 return status;
6474}
6475
6476/*
6477 * Decode RENEW response
6478 */
6479static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6480 void *__unused)
6481{
6482 struct compound_hdr hdr;
6483 int status;
6484
6485 status = decode_compound_hdr(xdr, &hdr);
6486 if (!status)
6487 status = decode_renew(xdr);
6488 return status;
6489}
6490
6491/*
6492 * Decode SETCLIENTID response
6493 */
6494static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6495 struct xdr_stream *xdr,
6496 struct nfs4_setclientid_res *res)
6497{
6498 struct compound_hdr hdr;
6499 int status;
6500
6501 status = decode_compound_hdr(xdr, &hdr);
6502 if (!status)
6503 status = decode_setclientid(xdr, res);
6504 return status;
6505}
6506
6507/*
6508 * Decode SETCLIENTID_CONFIRM response
6509 */
6510static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6511 struct xdr_stream *xdr,
6512 struct nfs_fsinfo *fsinfo)
6513{
6514 struct compound_hdr hdr;
6515 int status;
6516
6517 status = decode_compound_hdr(xdr, &hdr);
6518 if (!status)
6519 status = decode_setclientid_confirm(xdr);
6520 if (!status)
6521 status = decode_putrootfh(xdr);
6522 if (!status)
6523 status = decode_fsinfo(xdr, fsinfo);
6524 return status;
6525}
6526
6527/*
6528 * Decode DELEGRETURN response
6529 */
6530static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6531 struct xdr_stream *xdr,
6532 struct nfs4_delegreturnres *res)
6533{
6534 struct compound_hdr hdr;
6535 int status;
6536
6537 status = decode_compound_hdr(xdr, &hdr);
6538 if (status)
6539 goto out;
6540 status = decode_sequence(xdr, &res->seq_res, rqstp);
6541 if (status)
6542 goto out;
6543 status = decode_putfh(xdr);
6544 if (status != 0)
6545 goto out;
6546 status = decode_delegreturn(xdr);
6547 if (status != 0)
6548 goto out;
6549 decode_getfattr(xdr, res->fattr, res->server,
6550 !RPC_IS_ASYNC(rqstp->rq_task));
6551out:
6552 return status;
6553}
6554
6555/*
6556 * Decode FS_LOCATIONS response
6557 */
6558static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6559 struct xdr_stream *xdr,
6560 struct nfs4_fs_locations_res *res)
6561{
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, req);
6569 if (status)
6570 goto out;
6571 status = decode_putfh(xdr);
6572 if (status)
6573 goto out;
6574 status = decode_lookup(xdr);
6575 if (status)
6576 goto out;
6577 xdr_enter_page(xdr, PAGE_SIZE);
6578 status = decode_getfattr(xdr, &res->fs_locations->fattr,
6579 res->fs_locations->server,
6580 !RPC_IS_ASYNC(req->rq_task));
6581out:
6582 return status;
6583}
6584
6585/*
6586 * Decode SECINFO response
6587 */
6588static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6589 struct xdr_stream *xdr,
6590 struct nfs4_secinfo_res *res)
6591{
6592 struct compound_hdr hdr;
6593 int status;
6594
6595 status = decode_compound_hdr(xdr, &hdr);
6596 if (status)
6597 goto out;
6598 status = decode_sequence(xdr, &res->seq_res, rqstp);
6599 if (status)
6600 goto out;
6601 status = decode_putfh(xdr);
6602 if (status)
6603 goto out;
6604 status = decode_secinfo(xdr, res);
6605 if (status)
6606 goto out;
6607out:
6608 return status;
6609}
6610
6611#if defined(CONFIG_NFS_V4_1)
6612/*
6613 * Decode EXCHANGE_ID response
6614 */
6615static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6616 struct xdr_stream *xdr,
6617 void *res)
6618{
6619 struct compound_hdr hdr;
6620 int status;
6621
6622 status = decode_compound_hdr(xdr, &hdr);
6623 if (!status)
6624 status = decode_exchange_id(xdr, res);
6625 return status;
6626}
6627
6628/*
6629 * Decode CREATE_SESSION response
6630 */
6631static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6632 struct xdr_stream *xdr,
6633 struct nfs41_create_session_res *res)
6634{
6635 struct compound_hdr hdr;
6636 int status;
6637
6638 status = decode_compound_hdr(xdr, &hdr);
6639 if (!status)
6640 status = decode_create_session(xdr, res);
6641 return status;
6642}
6643
6644/*
6645 * Decode DESTROY_SESSION response
6646 */
6647static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6648 struct xdr_stream *xdr,
6649 void *res)
6650{
6651 struct compound_hdr hdr;
6652 int status;
6653
6654 status = decode_compound_hdr(xdr, &hdr);
6655 if (!status)
6656 status = decode_destroy_session(xdr, res);
6657 return status;
6658}
6659
6660/*
6661 * Decode SEQUENCE response
6662 */
6663static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6664 struct xdr_stream *xdr,
6665 struct nfs4_sequence_res *res)
6666{
6667 struct compound_hdr hdr;
6668 int status;
6669
6670 status = decode_compound_hdr(xdr, &hdr);
6671 if (!status)
6672 status = decode_sequence(xdr, res, rqstp);
6673 return status;
6674}
6675
6676/*
6677 * Decode GET_LEASE_TIME response
6678 */
6679static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6680 struct xdr_stream *xdr,
6681 struct nfs4_get_lease_time_res *res)
6682{
6683 struct compound_hdr hdr;
6684 int status;
6685
6686 status = decode_compound_hdr(xdr, &hdr);
6687 if (!status)
6688 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6689 if (!status)
6690 status = decode_putrootfh(xdr);
6691 if (!status)
6692 status = decode_fsinfo(xdr, res->lr_fsinfo);
6693 return status;
6694}
6695
6696/*
6697 * Decode RECLAIM_COMPLETE response
6698 */
6699static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6700 struct xdr_stream *xdr,
6701 struct nfs41_reclaim_complete_res *res)
6702{
6703 struct compound_hdr hdr;
6704 int status;
6705
6706 status = decode_compound_hdr(xdr, &hdr);
6707 if (!status)
6708 status = decode_sequence(xdr, &res->seq_res, rqstp);
6709 if (!status)
6710 status = decode_reclaim_complete(xdr, (void *)NULL);
6711 return status;
6712}
6713
6714/*
6715 * Decode GETDEVICELIST response
6716 */
6717static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6718 struct xdr_stream *xdr,
6719 struct nfs4_getdevicelist_res *res)
6720{
6721 struct compound_hdr hdr;
6722 int status;
6723
6724 dprintk("encoding getdevicelist!\n");
6725
6726 status = decode_compound_hdr(xdr, &hdr);
6727 if (status != 0)
6728 goto out;
6729 status = decode_sequence(xdr, &res->seq_res, rqstp);
6730 if (status != 0)
6731 goto out;
6732 status = decode_putfh(xdr);
6733 if (status != 0)
6734 goto out;
6735 status = decode_getdevicelist(xdr, res->devlist);
6736out:
6737 return status;
6738}
6739
6740/*
6741 * Decode GETDEVINFO response
6742 */
6743static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6744 struct xdr_stream *xdr,
6745 struct nfs4_getdeviceinfo_res *res)
6746{
6747 struct compound_hdr hdr;
6748 int status;
6749
6750 status = decode_compound_hdr(xdr, &hdr);
6751 if (status != 0)
6752 goto out;
6753 status = decode_sequence(xdr, &res->seq_res, rqstp);
6754 if (status != 0)
6755 goto out;
6756 status = decode_getdeviceinfo(xdr, res->pdev);
6757out:
6758 return status;
6759}
6760
6761/*
6762 * Decode LAYOUTGET response
6763 */
6764static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6765 struct xdr_stream *xdr,
6766 struct nfs4_layoutget_res *res)
6767{
6768 struct compound_hdr hdr;
6769 int status;
6770
6771 status = decode_compound_hdr(xdr, &hdr);
6772 if (status)
6773 goto out;
6774 status = decode_sequence(xdr, &res->seq_res, rqstp);
6775 if (status)
6776 goto out;
6777 status = decode_putfh(xdr);
6778 if (status)
6779 goto out;
6780 status = decode_layoutget(xdr, rqstp, res);
6781out:
6782 return status;
6783}
6784
6785/*
6786 * Decode LAYOUTRETURN response
6787 */
6788static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6789 struct xdr_stream *xdr,
6790 struct nfs4_layoutreturn_res *res)
6791{
6792 struct compound_hdr hdr;
6793 int status;
6794
6795 status = decode_compound_hdr(xdr, &hdr);
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_layoutreturn(xdr, res);
6805out:
6806 return status;
6807}
6808
6809/*
6810 * Decode LAYOUTCOMMIT response
6811 */
6812static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6813 struct xdr_stream *xdr,
6814 struct nfs4_layoutcommit_res *res)
6815{
6816 struct compound_hdr hdr;
6817 int status;
6818
6819 status = decode_compound_hdr(xdr, &hdr);
6820 if (status)
6821 goto out;
6822 status = decode_sequence(xdr, &res->seq_res, rqstp);
6823 if (status)
6824 goto out;
6825 status = decode_putfh(xdr);
6826 if (status)
6827 goto out;
6828 status = decode_layoutcommit(xdr, rqstp, res);
6829 if (status)
6830 goto out;
6831 decode_getfattr(xdr, res->fattr, res->server,
6832 !RPC_IS_ASYNC(rqstp->rq_task));
6833out:
6834 return status;
6835}
6836
6837/*
6838 * Decode SECINFO_NO_NAME response
6839 */
6840static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
6841 struct xdr_stream *xdr,
6842 struct nfs4_secinfo_res *res)
6843{
6844 struct compound_hdr hdr;
6845 int status;
6846
6847 status = decode_compound_hdr(xdr, &hdr);
6848 if (status)
6849 goto out;
6850 status = decode_sequence(xdr, &res->seq_res, rqstp);
6851 if (status)
6852 goto out;
6853 status = decode_putrootfh(xdr);
6854 if (status)
6855 goto out;
6856 status = decode_secinfo(xdr, res);
6857out:
6858 return status;
6859}
6860
6861/*
6862 * Decode TEST_STATEID response
6863 */
6864static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
6865 struct xdr_stream *xdr,
6866 struct nfs41_test_stateid_res *res)
6867{
6868 struct compound_hdr hdr;
6869 int status;
6870
6871 status = decode_compound_hdr(xdr, &hdr);
6872 if (status)
6873 goto out;
6874 status = decode_sequence(xdr, &res->seq_res, rqstp);
6875 if (status)
6876 goto out;
6877 status = decode_test_stateid(xdr, res);
6878out:
6879 return status;
6880}
6881
6882/*
6883 * Decode FREE_STATEID response
6884 */
6885static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
6886 struct xdr_stream *xdr,
6887 struct nfs41_free_stateid_res *res)
6888{
6889 struct compound_hdr hdr;
6890 int status;
6891
6892 status = decode_compound_hdr(xdr, &hdr);
6893 if (status)
6894 goto out;
6895 status = decode_sequence(xdr, &res->seq_res, rqstp);
6896 if (status)
6897 goto out;
6898 status = decode_free_stateid(xdr, res);
6899out:
6900 return status;
6901}
6902#endif /* CONFIG_NFS_V4_1 */
6903
6904/**
6905 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
6906 * the local page cache.
6907 * @xdr: XDR stream where entry resides
6908 * @entry: buffer to fill in with entry data
6909 * @plus: boolean indicating whether this should be a readdirplus entry
6910 *
6911 * Returns zero if successful, otherwise a negative errno value is
6912 * returned.
6913 *
6914 * This function is not invoked during READDIR reply decoding, but
6915 * rather whenever an application invokes the getdents(2) system call
6916 * on a directory already in our cache.
6917 */
6918int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
6919 int plus)
6920{
6921 uint32_t bitmap[3] = {0};
6922 uint32_t len;
6923 __be32 *p = xdr_inline_decode(xdr, 4);
6924 if (unlikely(!p))
6925 goto out_overflow;
6926 if (*p == xdr_zero) {
6927 p = xdr_inline_decode(xdr, 4);
6928 if (unlikely(!p))
6929 goto out_overflow;
6930 if (*p == xdr_zero)
6931 return -EAGAIN;
6932 entry->eof = 1;
6933 return -EBADCOOKIE;
6934 }
6935
6936 p = xdr_inline_decode(xdr, 12);
6937 if (unlikely(!p))
6938 goto out_overflow;
6939 entry->prev_cookie = entry->cookie;
6940 p = xdr_decode_hyper(p, &entry->cookie);
6941 entry->len = be32_to_cpup(p);
6942
6943 p = xdr_inline_decode(xdr, entry->len);
6944 if (unlikely(!p))
6945 goto out_overflow;
6946 entry->name = (const char *) p;
6947
6948 /*
6949 * In case the server doesn't return an inode number,
6950 * we fake one here. (We don't use inode number 0,
6951 * since glibc seems to choke on it...)
6952 */
6953 entry->ino = 1;
6954 entry->fattr->valid = 0;
6955
6956 if (decode_attr_bitmap(xdr, bitmap) < 0)
6957 goto out_overflow;
6958
6959 if (decode_attr_length(xdr, &len, &p) < 0)
6960 goto out_overflow;
6961
6962 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
6963 entry->server, 1) < 0)
6964 goto out_overflow;
6965 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
6966 entry->ino = entry->fattr->mounted_on_fileid;
6967 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
6968 entry->ino = entry->fattr->fileid;
6969
6970 entry->d_type = DT_UNKNOWN;
6971 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
6972 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
6973
6974 return 0;
6975
6976out_overflow:
6977 print_overflow_msg(__func__, xdr);
6978 return -EAGAIN;
6979}
6980
6981/*
6982 * We need to translate between nfs status return values and
6983 * the local errno values which may not be the same.
6984 */
6985static struct {
6986 int stat;
6987 int errno;
6988} nfs_errtbl[] = {
6989 { NFS4_OK, 0 },
6990 { NFS4ERR_PERM, -EPERM },
6991 { NFS4ERR_NOENT, -ENOENT },
6992 { NFS4ERR_IO, -errno_NFSERR_IO},
6993 { NFS4ERR_NXIO, -ENXIO },
6994 { NFS4ERR_ACCESS, -EACCES },
6995 { NFS4ERR_EXIST, -EEXIST },
6996 { NFS4ERR_XDEV, -EXDEV },
6997 { NFS4ERR_NOTDIR, -ENOTDIR },
6998 { NFS4ERR_ISDIR, -EISDIR },
6999 { NFS4ERR_INVAL, -EINVAL },
7000 { NFS4ERR_FBIG, -EFBIG },
7001 { NFS4ERR_NOSPC, -ENOSPC },
7002 { NFS4ERR_ROFS, -EROFS },
7003 { NFS4ERR_MLINK, -EMLINK },
7004 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7005 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7006 { NFS4ERR_DQUOT, -EDQUOT },
7007 { NFS4ERR_STALE, -ESTALE },
7008 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7009 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7010 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7011 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7012 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7013 { NFS4ERR_BADTYPE, -EBADTYPE },
7014 { NFS4ERR_LOCKED, -EAGAIN },
7015 { NFS4ERR_SYMLINK, -ELOOP },
7016 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7017 { NFS4ERR_DEADLOCK, -EDEADLK },
7018 { -1, -EIO }
7019};
7020
7021/*
7022 * Convert an NFS error code to a local one.
7023 * This one is used jointly by NFSv2 and NFSv3.
7024 */
7025static int
7026nfs4_stat_to_errno(int stat)
7027{
7028 int i;
7029 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7030 if (nfs_errtbl[i].stat == stat)
7031 return nfs_errtbl[i].errno;
7032 }
7033 if (stat <= 10000 || stat > 10100) {
7034 /* The server is looney tunes. */
7035 return -EREMOTEIO;
7036 }
7037 /* If we cannot translate the error, the recovery routines should
7038 * handle it.
7039 * Note: remaining NFSv4 error codes have values > 10000, so should
7040 * not conflict with native Linux error codes.
7041 */
7042 return -stat;
7043}
7044
7045#define PROC(proc, argtype, restype) \
7046[NFSPROC4_CLNT_##proc] = { \
7047 .p_proc = NFSPROC4_COMPOUND, \
7048 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7049 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7050 .p_arglen = NFS4_##argtype##_sz, \
7051 .p_replen = NFS4_##restype##_sz, \
7052 .p_statidx = NFSPROC4_CLNT_##proc, \
7053 .p_name = #proc, \
7054}
7055
7056struct rpc_procinfo nfs4_procedures[] = {
7057 PROC(READ, enc_read, dec_read),
7058 PROC(WRITE, enc_write, dec_write),
7059 PROC(COMMIT, enc_commit, dec_commit),
7060 PROC(OPEN, enc_open, dec_open),
7061 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7062 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7063 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7064 PROC(CLOSE, enc_close, dec_close),
7065 PROC(SETATTR, enc_setattr, dec_setattr),
7066 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7067 PROC(RENEW, enc_renew, dec_renew),
7068 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7069 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7070 PROC(LOCK, enc_lock, dec_lock),
7071 PROC(LOCKT, enc_lockt, dec_lockt),
7072 PROC(LOCKU, enc_locku, dec_locku),
7073 PROC(ACCESS, enc_access, dec_access),
7074 PROC(GETATTR, enc_getattr, dec_getattr),
7075 PROC(LOOKUP, enc_lookup, dec_lookup),
7076 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7077 PROC(REMOVE, enc_remove, dec_remove),
7078 PROC(RENAME, enc_rename, dec_rename),
7079 PROC(LINK, enc_link, dec_link),
7080 PROC(SYMLINK, enc_symlink, dec_symlink),
7081 PROC(CREATE, enc_create, dec_create),
7082 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7083 PROC(STATFS, enc_statfs, dec_statfs),
7084 PROC(READLINK, enc_readlink, dec_readlink),
7085 PROC(READDIR, enc_readdir, dec_readdir),
7086 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7087 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7088 PROC(GETACL, enc_getacl, dec_getacl),
7089 PROC(SETACL, enc_setacl, dec_setacl),
7090 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7091 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7092 PROC(SECINFO, enc_secinfo, dec_secinfo),
7093#if defined(CONFIG_NFS_V4_1)
7094 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7095 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7096 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7097 PROC(SEQUENCE, enc_sequence, dec_sequence),
7098 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7099 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7100 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7101 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7102 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7103 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7104 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7105 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7106 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7107 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7108#endif /* CONFIG_NFS_V4_1 */
7109};
7110
7111struct rpc_version nfs_version4 = {
7112 .number = 4,
7113 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7114 .procs = nfs4_procedures
7115};
7116
7117/*
7118 * Local variables:
7119 * c-basic-offset: 8
7120 * End:
7121 */
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};