Loading...
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#include <linux/nfs_idmap.h>
56
57#include "nfs4_fs.h"
58#include "internal.h"
59#include "pnfs.h"
60#include "netns.h"
61
62#define NFSDBG_FACILITY NFSDBG_XDR
63
64/* Mapping from NFS error code to "errno" error code. */
65#define errno_NFSERR_IO EIO
66
67static int nfs4_stat_to_errno(int);
68
69/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
70#ifdef DEBUG
71#define NFS4_MAXTAGLEN 20
72#else
73#define NFS4_MAXTAGLEN 0
74#endif
75
76/* lock,open owner id:
77 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
78 */
79#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
80#define lock_owner_id_maxsz (1 + 1 + 4)
81#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
82#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
83#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84#define op_encode_hdr_maxsz (1)
85#define op_decode_hdr_maxsz (2)
86#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
87#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
89#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
91 (NFS4_FHSIZE >> 2))
92#define decode_putfh_maxsz (op_decode_hdr_maxsz)
93#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
94#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
95#define encode_getfh_maxsz (op_encode_hdr_maxsz)
96#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
97 ((3+NFS4_FHSIZE) >> 2))
98#define nfs4_fattr_bitmap_maxsz 4
99#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
100#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
101#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
102#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
103#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104/* We support only one layout type per file system */
105#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
106/* This is based on getfattr, which uses the most attributes: */
107#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
108 3 + 3 + 3 + nfs4_owner_maxsz + \
109 nfs4_group_maxsz + decode_mdsthreshold_maxsz))
110#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
111 nfs4_fattr_value_maxsz)
112#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
113#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
114 1 + 2 + 1 + \
115 nfs4_owner_maxsz + \
116 nfs4_group_maxsz + \
117 4 + 4)
118#define encode_savefh_maxsz (op_encode_hdr_maxsz)
119#define decode_savefh_maxsz (op_decode_hdr_maxsz)
120#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
121#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
122#define encode_fsinfo_maxsz (encode_getattr_maxsz)
123/* The 5 accounts for the PNFS attributes, and assumes that at most three
124 * layout types will be returned.
125 */
126#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
127 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
128#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
129#define decode_renew_maxsz (op_decode_hdr_maxsz)
130#define encode_setclientid_maxsz \
131 (op_encode_hdr_maxsz + \
132 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
133 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
134 1 /* sc_prog */ + \
135 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
136 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
137 1) /* sc_cb_ident */
138#define decode_setclientid_maxsz \
139 (op_decode_hdr_maxsz + \
140 2 + \
141 1024) /* large value for CLID_INUSE */
142#define encode_setclientid_confirm_maxsz \
143 (op_encode_hdr_maxsz + \
144 3 + (NFS4_VERIFIER_SIZE >> 2))
145#define decode_setclientid_confirm_maxsz \
146 (op_decode_hdr_maxsz)
147#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
148#define decode_lookup_maxsz (op_decode_hdr_maxsz)
149#define encode_share_access_maxsz \
150 (2)
151#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
152#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
153#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
154#define encode_open_maxsz (op_encode_hdr_maxsz + \
155 2 + encode_share_access_maxsz + 2 + \
156 open_owner_id_maxsz + \
157 encode_opentype_maxsz + \
158 encode_claim_null_maxsz)
159#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
160#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
161 decode_ace_maxsz)
162#define decode_change_info_maxsz (5)
163#define decode_open_maxsz (op_decode_hdr_maxsz + \
164 decode_stateid_maxsz + \
165 decode_change_info_maxsz + 1 + \
166 nfs4_fattr_bitmap_maxsz + \
167 decode_delegation_maxsz)
168#define encode_open_confirm_maxsz \
169 (op_encode_hdr_maxsz + \
170 encode_stateid_maxsz + 1)
171#define decode_open_confirm_maxsz \
172 (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz)
174#define encode_open_downgrade_maxsz \
175 (op_encode_hdr_maxsz + \
176 encode_stateid_maxsz + 1 + \
177 encode_share_access_maxsz)
178#define decode_open_downgrade_maxsz \
179 (op_decode_hdr_maxsz + \
180 decode_stateid_maxsz)
181#define encode_close_maxsz (op_encode_hdr_maxsz + \
182 1 + encode_stateid_maxsz)
183#define decode_close_maxsz (op_decode_hdr_maxsz + \
184 decode_stateid_maxsz)
185#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
186 encode_stateid_maxsz + \
187 encode_attrs_maxsz)
188#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
189 nfs4_fattr_bitmap_maxsz)
190#define encode_read_maxsz (op_encode_hdr_maxsz + \
191 encode_stateid_maxsz + 3)
192#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
193#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
194 2 + encode_verifier_maxsz + 5)
195#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
196 decode_verifier_maxsz)
197#define encode_readlink_maxsz (op_encode_hdr_maxsz)
198#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
199#define encode_write_maxsz (op_encode_hdr_maxsz + \
200 encode_stateid_maxsz + 4)
201#define decode_write_maxsz (op_decode_hdr_maxsz + \
202 2 + decode_verifier_maxsz)
203#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
204#define decode_commit_maxsz (op_decode_hdr_maxsz + \
205 decode_verifier_maxsz)
206#define encode_remove_maxsz (op_encode_hdr_maxsz + \
207 nfs4_name_maxsz)
208#define decode_remove_maxsz (op_decode_hdr_maxsz + \
209 decode_change_info_maxsz)
210#define encode_rename_maxsz (op_encode_hdr_maxsz + \
211 2 * nfs4_name_maxsz)
212#define decode_rename_maxsz (op_decode_hdr_maxsz + \
213 decode_change_info_maxsz + \
214 decode_change_info_maxsz)
215#define encode_link_maxsz (op_encode_hdr_maxsz + \
216 nfs4_name_maxsz)
217#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
218#define encode_lockowner_maxsz (7)
219#define encode_lock_maxsz (op_encode_hdr_maxsz + \
220 7 + \
221 1 + encode_stateid_maxsz + 1 + \
222 encode_lockowner_maxsz)
223#define decode_lock_denied_maxsz \
224 (8 + decode_lockowner_maxsz)
225#define decode_lock_maxsz (op_decode_hdr_maxsz + \
226 decode_lock_denied_maxsz)
227#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
228 encode_lockowner_maxsz)
229#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
230 decode_lock_denied_maxsz)
231#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
232 encode_stateid_maxsz + \
233 4)
234#define decode_locku_maxsz (op_decode_hdr_maxsz + \
235 decode_stateid_maxsz)
236#define encode_release_lockowner_maxsz \
237 (op_encode_hdr_maxsz + \
238 encode_lockowner_maxsz)
239#define decode_release_lockowner_maxsz \
240 (op_decode_hdr_maxsz)
241#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
242#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
243#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
244 1 + nfs4_name_maxsz + \
245 1 + \
246 nfs4_fattr_maxsz)
247#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
248#define encode_create_maxsz (op_encode_hdr_maxsz + \
249 1 + 2 + nfs4_name_maxsz + \
250 encode_attrs_maxsz)
251#define decode_create_maxsz (op_decode_hdr_maxsz + \
252 decode_change_info_maxsz + \
253 nfs4_fattr_bitmap_maxsz)
254#define encode_statfs_maxsz (encode_getattr_maxsz)
255#define decode_statfs_maxsz (decode_getattr_maxsz)
256#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
257#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
258#define encode_getacl_maxsz (encode_getattr_maxsz)
259#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
260 nfs4_fattr_bitmap_maxsz + 1)
261#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
262 encode_stateid_maxsz + 3)
263#define decode_setacl_maxsz (decode_setattr_maxsz)
264#define encode_fs_locations_maxsz \
265 (encode_getattr_maxsz)
266#define decode_fs_locations_maxsz \
267 (0)
268#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
269#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
270
271#if defined(CONFIG_NFS_V4_1)
272#define NFS4_MAX_MACHINE_NAME_LEN (64)
273
274#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
275 encode_verifier_maxsz + \
276 1 /* co_ownerid.len */ + \
277 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
278 1 /* flags */ + \
279 1 /* spa_how */ + \
280 0 /* SP4_NONE (for now) */ + \
281 1 /* implementation id array of size 1 */ + \
282 1 /* nii_domain */ + \
283 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
284 1 /* nii_name */ + \
285 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
286 3 /* nii_date */)
287#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
288 2 /* eir_clientid */ + \
289 1 /* eir_sequenceid */ + \
290 1 /* eir_flags */ + \
291 1 /* spr_how */ + \
292 0 /* SP4_NONE (for now) */ + \
293 2 /* eir_server_owner.so_minor_id */ + \
294 /* eir_server_owner.so_major_id<> */ \
295 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
296 /* eir_server_scope<> */ \
297 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
298 1 /* eir_server_impl_id array length */ + \
299 1 /* nii_domain */ + \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
301 1 /* nii_name */ + \
302 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
303 3 /* nii_date */)
304#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
305#define decode_channel_attrs_maxsz (6 + \
306 1 /* ca_rdma_ird.len */ + \
307 1 /* ca_rdma_ird */)
308#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
309 2 /* csa_clientid */ + \
310 1 /* csa_sequence */ + \
311 1 /* csa_flags */ + \
312 encode_channel_attrs_maxsz + \
313 encode_channel_attrs_maxsz + \
314 1 /* csa_cb_program */ + \
315 1 /* csa_sec_parms.len (1) */ + \
316 1 /* cb_secflavor (AUTH_SYS) */ + \
317 1 /* stamp */ + \
318 1 /* machinename.len */ + \
319 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
320 1 /* uid */ + \
321 1 /* gid */ + \
322 1 /* gids.len (0) */)
323#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
324 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
325 1 /* csr_sequence */ + \
326 1 /* csr_flags */ + \
327 decode_channel_attrs_maxsz + \
328 decode_channel_attrs_maxsz)
329#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
330 /* bctsa_sessid */ \
331 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
332 1 /* bctsa_dir */ + \
333 1 /* bctsa_use_conn_in_rdma_mode */)
334#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
335 /* bctsr_sessid */ \
336 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
337 1 /* bctsr_dir */ + \
338 1 /* bctsr_use_conn_in_rdma_mode */)
339#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
340#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
341#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
342#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
343#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
344 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
345#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
346 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
347#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
348#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
349#define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
350 encode_verifier_maxsz)
351#define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
352 2 /* nfs_cookie4 gdlr_cookie */ + \
353 decode_verifier_maxsz \
354 /* verifier4 gdlr_verifier */ + \
355 1 /* gdlr_deviceid_list count */ + \
356 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
357 NFS4_DEVICEID4_SIZE) \
358 /* gdlr_deviceid_list */ + \
359 1 /* bool gdlr_eof */)
360#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
361 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
362#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
363 1 /* layout type */ + \
364 1 /* opaque devaddr4 length */ + \
365 /* devaddr4 payload is read into page */ \
366 1 /* notification bitmap length */ + \
367 1 /* notification bitmap */)
368#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
369 encode_stateid_maxsz)
370#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
371 decode_stateid_maxsz + \
372 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
373#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
374 2 /* offset */ + \
375 2 /* length */ + \
376 1 /* reclaim */ + \
377 encode_stateid_maxsz + \
378 1 /* new offset (true) */ + \
379 2 /* last byte written */ + \
380 1 /* nt_timechanged (false) */ + \
381 1 /* layoutupdate4 layout type */ + \
382 1 /* NULL filelayout layoutupdate4 payload */)
383#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
384#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
385 encode_stateid_maxsz + \
386 1 /* FIXME: opaque lrf_body always empty at the moment */)
387#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
388 1 + decode_stateid_maxsz)
389#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
390#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
391#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
392 XDR_QUADLEN(NFS4_STATEID_SIZE))
393#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
394#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
395 XDR_QUADLEN(NFS4_STATEID_SIZE))
396#define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
397#else /* CONFIG_NFS_V4_1 */
398#define encode_sequence_maxsz 0
399#define decode_sequence_maxsz 0
400#endif /* CONFIG_NFS_V4_1 */
401
402#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
403#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
404#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
405 encode_sequence_maxsz + \
406 encode_putfh_maxsz + \
407 encode_read_maxsz)
408#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
409 decode_sequence_maxsz + \
410 decode_putfh_maxsz + \
411 decode_read_maxsz)
412#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
413 encode_sequence_maxsz + \
414 encode_putfh_maxsz + \
415 encode_readlink_maxsz)
416#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
417 decode_sequence_maxsz + \
418 decode_putfh_maxsz + \
419 decode_readlink_maxsz)
420#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
421 encode_sequence_maxsz + \
422 encode_putfh_maxsz + \
423 encode_readdir_maxsz)
424#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
425 decode_sequence_maxsz + \
426 decode_putfh_maxsz + \
427 decode_readdir_maxsz)
428#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
429 encode_sequence_maxsz + \
430 encode_putfh_maxsz + \
431 encode_write_maxsz + \
432 encode_getattr_maxsz)
433#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
434 decode_sequence_maxsz + \
435 decode_putfh_maxsz + \
436 decode_write_maxsz + \
437 decode_getattr_maxsz)
438#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
439 encode_sequence_maxsz + \
440 encode_putfh_maxsz + \
441 encode_commit_maxsz)
442#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
443 decode_sequence_maxsz + \
444 decode_putfh_maxsz + \
445 decode_commit_maxsz)
446#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
447 encode_sequence_maxsz + \
448 encode_putfh_maxsz + \
449 encode_open_maxsz + \
450 encode_getfh_maxsz + \
451 encode_getattr_maxsz)
452#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
453 decode_sequence_maxsz + \
454 decode_putfh_maxsz + \
455 decode_open_maxsz + \
456 decode_getfh_maxsz + \
457 decode_getattr_maxsz)
458#define NFS4_enc_open_confirm_sz \
459 (compound_encode_hdr_maxsz + \
460 encode_putfh_maxsz + \
461 encode_open_confirm_maxsz)
462#define NFS4_dec_open_confirm_sz \
463 (compound_decode_hdr_maxsz + \
464 decode_putfh_maxsz + \
465 decode_open_confirm_maxsz)
466#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
467 encode_sequence_maxsz + \
468 encode_putfh_maxsz + \
469 encode_open_maxsz + \
470 encode_getattr_maxsz)
471#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
472 decode_sequence_maxsz + \
473 decode_putfh_maxsz + \
474 decode_open_maxsz + \
475 decode_getattr_maxsz)
476#define NFS4_enc_open_downgrade_sz \
477 (compound_encode_hdr_maxsz + \
478 encode_sequence_maxsz + \
479 encode_putfh_maxsz + \
480 encode_open_downgrade_maxsz + \
481 encode_getattr_maxsz)
482#define NFS4_dec_open_downgrade_sz \
483 (compound_decode_hdr_maxsz + \
484 decode_sequence_maxsz + \
485 decode_putfh_maxsz + \
486 decode_open_downgrade_maxsz + \
487 decode_getattr_maxsz)
488#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
489 encode_sequence_maxsz + \
490 encode_putfh_maxsz + \
491 encode_close_maxsz + \
492 encode_getattr_maxsz)
493#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
494 decode_sequence_maxsz + \
495 decode_putfh_maxsz + \
496 decode_close_maxsz + \
497 decode_getattr_maxsz)
498#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
499 encode_sequence_maxsz + \
500 encode_putfh_maxsz + \
501 encode_setattr_maxsz + \
502 encode_getattr_maxsz)
503#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_setattr_maxsz + \
507 decode_getattr_maxsz)
508#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
509 encode_sequence_maxsz + \
510 encode_putfh_maxsz + \
511 encode_fsinfo_maxsz)
512#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
513 decode_sequence_maxsz + \
514 decode_putfh_maxsz + \
515 decode_fsinfo_maxsz)
516#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
517 encode_renew_maxsz)
518#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
519 decode_renew_maxsz)
520#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
521 encode_setclientid_maxsz)
522#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
523 decode_setclientid_maxsz)
524#define NFS4_enc_setclientid_confirm_sz \
525 (compound_encode_hdr_maxsz + \
526 encode_setclientid_confirm_maxsz + \
527 encode_putrootfh_maxsz + \
528 encode_fsinfo_maxsz)
529#define NFS4_dec_setclientid_confirm_sz \
530 (compound_decode_hdr_maxsz + \
531 decode_setclientid_confirm_maxsz + \
532 decode_putrootfh_maxsz + \
533 decode_fsinfo_maxsz)
534#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
535 encode_sequence_maxsz + \
536 encode_putfh_maxsz + \
537 encode_lock_maxsz)
538#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
539 decode_sequence_maxsz + \
540 decode_putfh_maxsz + \
541 decode_lock_maxsz)
542#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
543 encode_sequence_maxsz + \
544 encode_putfh_maxsz + \
545 encode_lockt_maxsz)
546#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
547 decode_sequence_maxsz + \
548 decode_putfh_maxsz + \
549 decode_lockt_maxsz)
550#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
551 encode_sequence_maxsz + \
552 encode_putfh_maxsz + \
553 encode_locku_maxsz)
554#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
555 decode_sequence_maxsz + \
556 decode_putfh_maxsz + \
557 decode_locku_maxsz)
558#define NFS4_enc_release_lockowner_sz \
559 (compound_encode_hdr_maxsz + \
560 encode_lockowner_maxsz)
561#define NFS4_dec_release_lockowner_sz \
562 (compound_decode_hdr_maxsz + \
563 decode_lockowner_maxsz)
564#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
565 encode_sequence_maxsz + \
566 encode_putfh_maxsz + \
567 encode_access_maxsz + \
568 encode_getattr_maxsz)
569#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
570 decode_sequence_maxsz + \
571 decode_putfh_maxsz + \
572 decode_access_maxsz + \
573 decode_getattr_maxsz)
574#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
575 encode_sequence_maxsz + \
576 encode_putfh_maxsz + \
577 encode_getattr_maxsz)
578#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
579 decode_sequence_maxsz + \
580 decode_putfh_maxsz + \
581 decode_getattr_maxsz)
582#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
583 encode_sequence_maxsz + \
584 encode_putfh_maxsz + \
585 encode_lookup_maxsz + \
586 encode_getattr_maxsz + \
587 encode_getfh_maxsz)
588#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
589 decode_sequence_maxsz + \
590 decode_putfh_maxsz + \
591 decode_lookup_maxsz + \
592 decode_getattr_maxsz + \
593 decode_getfh_maxsz)
594#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
595 encode_sequence_maxsz + \
596 encode_putrootfh_maxsz + \
597 encode_getattr_maxsz + \
598 encode_getfh_maxsz)
599#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
600 decode_sequence_maxsz + \
601 decode_putrootfh_maxsz + \
602 decode_getattr_maxsz + \
603 decode_getfh_maxsz)
604#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
605 encode_sequence_maxsz + \
606 encode_putfh_maxsz + \
607 encode_remove_maxsz)
608#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_remove_maxsz)
612#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
615 encode_savefh_maxsz + \
616 encode_putfh_maxsz + \
617 encode_rename_maxsz)
618#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
619 decode_sequence_maxsz + \
620 decode_putfh_maxsz + \
621 decode_savefh_maxsz + \
622 decode_putfh_maxsz + \
623 decode_rename_maxsz)
624#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
625 encode_sequence_maxsz + \
626 encode_putfh_maxsz + \
627 encode_savefh_maxsz + \
628 encode_putfh_maxsz + \
629 encode_link_maxsz + \
630 encode_restorefh_maxsz + \
631 encode_getattr_maxsz)
632#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
633 decode_sequence_maxsz + \
634 decode_putfh_maxsz + \
635 decode_savefh_maxsz + \
636 decode_putfh_maxsz + \
637 decode_link_maxsz + \
638 decode_restorefh_maxsz + \
639 decode_getattr_maxsz)
640#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
641 encode_sequence_maxsz + \
642 encode_putfh_maxsz + \
643 encode_symlink_maxsz + \
644 encode_getattr_maxsz + \
645 encode_getfh_maxsz)
646#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
647 decode_sequence_maxsz + \
648 decode_putfh_maxsz + \
649 decode_symlink_maxsz + \
650 decode_getattr_maxsz + \
651 decode_getfh_maxsz)
652#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
653 encode_sequence_maxsz + \
654 encode_putfh_maxsz + \
655 encode_create_maxsz + \
656 encode_getfh_maxsz + \
657 encode_getattr_maxsz)
658#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
659 decode_sequence_maxsz + \
660 decode_putfh_maxsz + \
661 decode_create_maxsz + \
662 decode_getfh_maxsz + \
663 decode_getattr_maxsz)
664#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
665 encode_sequence_maxsz + \
666 encode_putfh_maxsz + \
667 encode_getattr_maxsz)
668#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
669 decode_sequence_maxsz + \
670 decode_putfh_maxsz + \
671 decode_getattr_maxsz)
672#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
673 encode_sequence_maxsz + \
674 encode_putfh_maxsz + \
675 encode_statfs_maxsz)
676#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
677 decode_sequence_maxsz + \
678 decode_putfh_maxsz + \
679 decode_statfs_maxsz)
680#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
681 encode_sequence_maxsz + \
682 encode_putfh_maxsz + \
683 encode_getattr_maxsz)
684#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
685 decode_sequence_maxsz + \
686 decode_putfh_maxsz + \
687 decode_getattr_maxsz)
688#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
689 encode_sequence_maxsz + \
690 encode_putfh_maxsz + \
691 encode_delegreturn_maxsz + \
692 encode_getattr_maxsz)
693#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_delegreturn_maxsz + \
696 decode_getattr_maxsz)
697#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
698 encode_sequence_maxsz + \
699 encode_putfh_maxsz + \
700 encode_getacl_maxsz)
701#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_getacl_maxsz)
705#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
706 encode_sequence_maxsz + \
707 encode_putfh_maxsz + \
708 encode_setacl_maxsz)
709#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
710 decode_sequence_maxsz + \
711 decode_putfh_maxsz + \
712 decode_setacl_maxsz)
713#define NFS4_enc_fs_locations_sz \
714 (compound_encode_hdr_maxsz + \
715 encode_sequence_maxsz + \
716 encode_putfh_maxsz + \
717 encode_lookup_maxsz + \
718 encode_fs_locations_maxsz)
719#define NFS4_dec_fs_locations_sz \
720 (compound_decode_hdr_maxsz + \
721 decode_sequence_maxsz + \
722 decode_putfh_maxsz + \
723 decode_lookup_maxsz + \
724 decode_fs_locations_maxsz)
725#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
726 encode_sequence_maxsz + \
727 encode_putfh_maxsz + \
728 encode_secinfo_maxsz)
729#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
730 decode_sequence_maxsz + \
731 decode_putfh_maxsz + \
732 decode_secinfo_maxsz)
733#if defined(CONFIG_NFS_V4_1)
734#define NFS4_enc_bind_conn_to_session_sz \
735 (compound_encode_hdr_maxsz + \
736 encode_bind_conn_to_session_maxsz)
737#define NFS4_dec_bind_conn_to_session_sz \
738 (compound_decode_hdr_maxsz + \
739 decode_bind_conn_to_session_maxsz)
740#define NFS4_enc_exchange_id_sz \
741 (compound_encode_hdr_maxsz + \
742 encode_exchange_id_maxsz)
743#define NFS4_dec_exchange_id_sz \
744 (compound_decode_hdr_maxsz + \
745 decode_exchange_id_maxsz)
746#define NFS4_enc_create_session_sz \
747 (compound_encode_hdr_maxsz + \
748 encode_create_session_maxsz)
749#define NFS4_dec_create_session_sz \
750 (compound_decode_hdr_maxsz + \
751 decode_create_session_maxsz)
752#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
753 encode_destroy_session_maxsz)
754#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
755 decode_destroy_session_maxsz)
756#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
757 encode_destroy_clientid_maxsz)
758#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
759 decode_destroy_clientid_maxsz)
760#define NFS4_enc_sequence_sz \
761 (compound_decode_hdr_maxsz + \
762 encode_sequence_maxsz)
763#define NFS4_dec_sequence_sz \
764 (compound_decode_hdr_maxsz + \
765 decode_sequence_maxsz)
766#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
767 encode_sequence_maxsz + \
768 encode_putrootfh_maxsz + \
769 encode_fsinfo_maxsz)
770#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
771 decode_sequence_maxsz + \
772 decode_putrootfh_maxsz + \
773 decode_fsinfo_maxsz)
774#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
775 encode_sequence_maxsz + \
776 encode_reclaim_complete_maxsz)
777#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_reclaim_complete_maxsz)
780#define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
781 encode_sequence_maxsz + \
782 encode_putfh_maxsz + \
783 encode_getdevicelist_maxsz)
784#define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
785 decode_sequence_maxsz + \
786 decode_putfh_maxsz + \
787 decode_getdevicelist_maxsz)
788#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
789 encode_sequence_maxsz +\
790 encode_getdeviceinfo_maxsz)
791#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
792 decode_sequence_maxsz + \
793 decode_getdeviceinfo_maxsz)
794#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
795 encode_sequence_maxsz + \
796 encode_putfh_maxsz + \
797 encode_layoutget_maxsz)
798#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
799 decode_sequence_maxsz + \
800 decode_putfh_maxsz + \
801 decode_layoutget_maxsz)
802#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
803 encode_sequence_maxsz +\
804 encode_putfh_maxsz + \
805 encode_layoutcommit_maxsz + \
806 encode_getattr_maxsz)
807#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
808 decode_sequence_maxsz + \
809 decode_putfh_maxsz + \
810 decode_layoutcommit_maxsz + \
811 decode_getattr_maxsz)
812#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
813 encode_sequence_maxsz + \
814 encode_putfh_maxsz + \
815 encode_layoutreturn_maxsz)
816#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
817 decode_sequence_maxsz + \
818 decode_putfh_maxsz + \
819 decode_layoutreturn_maxsz)
820#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz + \
822 encode_putrootfh_maxsz +\
823 encode_secinfo_no_name_maxsz)
824#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putrootfh_maxsz + \
827 decode_secinfo_no_name_maxsz)
828#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
829 encode_sequence_maxsz + \
830 encode_test_stateid_maxsz)
831#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
832 decode_sequence_maxsz + \
833 decode_test_stateid_maxsz)
834#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
835 encode_sequence_maxsz + \
836 encode_free_stateid_maxsz)
837#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
838 decode_sequence_maxsz + \
839 decode_free_stateid_maxsz)
840
841const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
842 compound_encode_hdr_maxsz +
843 encode_sequence_maxsz +
844 encode_putfh_maxsz +
845 encode_getattr_maxsz) *
846 XDR_UNIT);
847
848const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
849 compound_decode_hdr_maxsz +
850 decode_sequence_maxsz +
851 decode_putfh_maxsz) *
852 XDR_UNIT);
853#endif /* CONFIG_NFS_V4_1 */
854
855static unsigned short send_implementation_id = 1;
856
857module_param(send_implementation_id, ushort, 0644);
858MODULE_PARM_DESC(send_implementation_id,
859 "Send implementation ID with NFSv4.1 exchange_id");
860
861static const umode_t nfs_type2fmt[] = {
862 [NF4BAD] = 0,
863 [NF4REG] = S_IFREG,
864 [NF4DIR] = S_IFDIR,
865 [NF4BLK] = S_IFBLK,
866 [NF4CHR] = S_IFCHR,
867 [NF4LNK] = S_IFLNK,
868 [NF4SOCK] = S_IFSOCK,
869 [NF4FIFO] = S_IFIFO,
870 [NF4ATTRDIR] = 0,
871 [NF4NAMEDATTR] = 0,
872};
873
874struct compound_hdr {
875 int32_t status;
876 uint32_t nops;
877 __be32 * nops_p;
878 uint32_t taglen;
879 char * tag;
880 uint32_t replen; /* expected reply words */
881 u32 minorversion;
882};
883
884static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
885{
886 __be32 *p = xdr_reserve_space(xdr, nbytes);
887 BUG_ON(!p);
888 return p;
889}
890
891static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
892{
893 __be32 *p;
894
895 p = xdr_reserve_space(xdr, len);
896 xdr_encode_opaque_fixed(p, buf, len);
897}
898
899static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
900{
901 __be32 *p;
902
903 p = reserve_space(xdr, 4 + len);
904 xdr_encode_opaque(p, str, len);
905}
906
907static void encode_uint32(struct xdr_stream *xdr, u32 n)
908{
909 __be32 *p;
910
911 p = reserve_space(xdr, 4);
912 *p = cpu_to_be32(n);
913}
914
915static void encode_uint64(struct xdr_stream *xdr, u64 n)
916{
917 __be32 *p;
918
919 p = reserve_space(xdr, 8);
920 xdr_encode_hyper(p, n);
921}
922
923static void encode_nfs4_seqid(struct xdr_stream *xdr,
924 const struct nfs_seqid *seqid)
925{
926 encode_uint32(xdr, seqid->sequence->counter);
927}
928
929static void encode_compound_hdr(struct xdr_stream *xdr,
930 struct rpc_rqst *req,
931 struct compound_hdr *hdr)
932{
933 __be32 *p;
934 struct rpc_auth *auth = req->rq_cred->cr_auth;
935
936 /* initialize running count of expected bytes in reply.
937 * NOTE: the replied tag SHOULD be the same is the one sent,
938 * but this is not required as a MUST for the server to do so. */
939 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
940
941 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
942 encode_string(xdr, hdr->taglen, hdr->tag);
943 p = reserve_space(xdr, 8);
944 *p++ = cpu_to_be32(hdr->minorversion);
945 hdr->nops_p = p;
946 *p = cpu_to_be32(hdr->nops);
947}
948
949static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
950 uint32_t replen,
951 struct compound_hdr *hdr)
952{
953 encode_uint32(xdr, op);
954 hdr->nops++;
955 hdr->replen += replen;
956}
957
958static void encode_nops(struct compound_hdr *hdr)
959{
960 BUG_ON(hdr->nops > NFS4_MAX_OPS);
961 *hdr->nops_p = htonl(hdr->nops);
962}
963
964static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
965{
966 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
967}
968
969static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
970{
971 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
972}
973
974static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
975{
976 char owner_name[IDMAP_NAMESZ];
977 char owner_group[IDMAP_NAMESZ];
978 int owner_namelen = 0;
979 int owner_grouplen = 0;
980 __be32 *p;
981 __be32 *q;
982 int len;
983 uint32_t bmval0 = 0;
984 uint32_t bmval1 = 0;
985
986 /*
987 * We reserve enough space to write the entire attribute buffer at once.
988 * In the worst-case, this would be
989 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
990 * = 36 bytes, plus any contribution from variable-length fields
991 * such as owner/group.
992 */
993 len = 16;
994
995 /* Sigh */
996 if (iap->ia_valid & ATTR_SIZE)
997 len += 8;
998 if (iap->ia_valid & ATTR_MODE)
999 len += 4;
1000 if (iap->ia_valid & ATTR_UID) {
1001 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1002 if (owner_namelen < 0) {
1003 dprintk("nfs: couldn't resolve uid %d to string\n",
1004 iap->ia_uid);
1005 /* XXX */
1006 strcpy(owner_name, "nobody");
1007 owner_namelen = sizeof("nobody") - 1;
1008 /* goto out; */
1009 }
1010 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1011 }
1012 if (iap->ia_valid & ATTR_GID) {
1013 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1014 if (owner_grouplen < 0) {
1015 dprintk("nfs: couldn't resolve gid %d to string\n",
1016 iap->ia_gid);
1017 strcpy(owner_group, "nobody");
1018 owner_grouplen = sizeof("nobody") - 1;
1019 /* goto out; */
1020 }
1021 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1022 }
1023 if (iap->ia_valid & ATTR_ATIME_SET)
1024 len += 16;
1025 else if (iap->ia_valid & ATTR_ATIME)
1026 len += 4;
1027 if (iap->ia_valid & ATTR_MTIME_SET)
1028 len += 16;
1029 else if (iap->ia_valid & ATTR_MTIME)
1030 len += 4;
1031 p = reserve_space(xdr, len);
1032
1033 /*
1034 * We write the bitmap length now, but leave the bitmap and the attribute
1035 * buffer length to be backfilled at the end of this routine.
1036 */
1037 *p++ = cpu_to_be32(2);
1038 q = p;
1039 p += 3;
1040
1041 if (iap->ia_valid & ATTR_SIZE) {
1042 bmval0 |= FATTR4_WORD0_SIZE;
1043 p = xdr_encode_hyper(p, iap->ia_size);
1044 }
1045 if (iap->ia_valid & ATTR_MODE) {
1046 bmval1 |= FATTR4_WORD1_MODE;
1047 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1048 }
1049 if (iap->ia_valid & ATTR_UID) {
1050 bmval1 |= FATTR4_WORD1_OWNER;
1051 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1052 }
1053 if (iap->ia_valid & ATTR_GID) {
1054 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1055 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1056 }
1057 if (iap->ia_valid & ATTR_ATIME_SET) {
1058 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1059 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1060 *p++ = cpu_to_be32(0);
1061 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1062 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1063 }
1064 else if (iap->ia_valid & ATTR_ATIME) {
1065 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1066 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1067 }
1068 if (iap->ia_valid & ATTR_MTIME_SET) {
1069 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1070 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1071 *p++ = cpu_to_be32(0);
1072 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1073 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1074 }
1075 else if (iap->ia_valid & ATTR_MTIME) {
1076 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1077 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1078 }
1079
1080 /*
1081 * Now we backfill the bitmap and the attribute buffer length.
1082 */
1083 if (len != ((char *)p - (char *)q) + 4) {
1084 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1085 len, ((char *)p - (char *)q) + 4);
1086 BUG();
1087 }
1088 len = (char *)p - (char *)q - 12;
1089 *q++ = htonl(bmval0);
1090 *q++ = htonl(bmval1);
1091 *q = htonl(len);
1092
1093/* out: */
1094}
1095
1096static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1097{
1098 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1099 encode_uint32(xdr, access);
1100}
1101
1102static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1103{
1104 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1105 encode_nfs4_seqid(xdr, arg->seqid);
1106 encode_nfs4_stateid(xdr, arg->stateid);
1107}
1108
1109static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1110{
1111 __be32 *p;
1112
1113 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1114 p = reserve_space(xdr, 12);
1115 p = xdr_encode_hyper(p, args->offset);
1116 *p = cpu_to_be32(args->count);
1117}
1118
1119static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1120{
1121 __be32 *p;
1122
1123 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1124 encode_uint32(xdr, create->ftype);
1125
1126 switch (create->ftype) {
1127 case NF4LNK:
1128 p = reserve_space(xdr, 4);
1129 *p = cpu_to_be32(create->u.symlink.len);
1130 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1131 break;
1132
1133 case NF4BLK: case NF4CHR:
1134 p = reserve_space(xdr, 8);
1135 *p++ = cpu_to_be32(create->u.device.specdata1);
1136 *p = cpu_to_be32(create->u.device.specdata2);
1137 break;
1138
1139 default:
1140 break;
1141 }
1142
1143 encode_string(xdr, create->name->len, create->name->name);
1144 encode_attrs(xdr, create->attrs, create->server);
1145}
1146
1147static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1148{
1149 __be32 *p;
1150
1151 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1152 p = reserve_space(xdr, 8);
1153 *p++ = cpu_to_be32(1);
1154 *p = cpu_to_be32(bitmap);
1155}
1156
1157static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1158{
1159 __be32 *p;
1160
1161 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1162 p = reserve_space(xdr, 12);
1163 *p++ = cpu_to_be32(2);
1164 *p++ = cpu_to_be32(bm0);
1165 *p = cpu_to_be32(bm1);
1166}
1167
1168static void
1169encode_getattr_three(struct xdr_stream *xdr,
1170 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1171 struct compound_hdr *hdr)
1172{
1173 __be32 *p;
1174
1175 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1176 if (bm2) {
1177 p = reserve_space(xdr, 16);
1178 *p++ = cpu_to_be32(3);
1179 *p++ = cpu_to_be32(bm0);
1180 *p++ = cpu_to_be32(bm1);
1181 *p = cpu_to_be32(bm2);
1182 } else if (bm1) {
1183 p = reserve_space(xdr, 12);
1184 *p++ = cpu_to_be32(2);
1185 *p++ = cpu_to_be32(bm0);
1186 *p = cpu_to_be32(bm1);
1187 } else {
1188 p = reserve_space(xdr, 8);
1189 *p++ = cpu_to_be32(1);
1190 *p = cpu_to_be32(bm0);
1191 }
1192}
1193
1194static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1195{
1196 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1197 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1198}
1199
1200static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1201 const u32 *open_bitmap,
1202 struct compound_hdr *hdr)
1203{
1204 encode_getattr_three(xdr,
1205 bitmask[0] & open_bitmap[0],
1206 bitmask[1] & open_bitmap[1],
1207 bitmask[2] & open_bitmap[2],
1208 hdr);
1209}
1210
1211static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1212{
1213 encode_getattr_three(xdr,
1214 bitmask[0] & nfs4_fsinfo_bitmap[0],
1215 bitmask[1] & nfs4_fsinfo_bitmap[1],
1216 bitmask[2] & nfs4_fsinfo_bitmap[2],
1217 hdr);
1218}
1219
1220static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1221{
1222 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1223 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1224}
1225
1226static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1227{
1228 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1229}
1230
1231static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1232{
1233 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1234 encode_string(xdr, name->len, name->name);
1235}
1236
1237static inline int nfs4_lock_type(struct file_lock *fl, int block)
1238{
1239 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1240 return block ? NFS4_READW_LT : NFS4_READ_LT;
1241 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1242}
1243
1244static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1245{
1246 if (fl->fl_end == OFFSET_MAX)
1247 return ~(uint64_t)0;
1248 return fl->fl_end - fl->fl_start + 1;
1249}
1250
1251static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1252{
1253 __be32 *p;
1254
1255 p = reserve_space(xdr, 32);
1256 p = xdr_encode_hyper(p, lowner->clientid);
1257 *p++ = cpu_to_be32(20);
1258 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1259 *p++ = cpu_to_be32(lowner->s_dev);
1260 xdr_encode_hyper(p, lowner->id);
1261}
1262
1263/*
1264 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1265 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1266 */
1267static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1268{
1269 __be32 *p;
1270
1271 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1272 p = reserve_space(xdr, 28);
1273 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1274 *p++ = cpu_to_be32(args->reclaim);
1275 p = xdr_encode_hyper(p, args->fl->fl_start);
1276 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1277 *p = cpu_to_be32(args->new_lock_owner);
1278 if (args->new_lock_owner){
1279 encode_nfs4_seqid(xdr, args->open_seqid);
1280 encode_nfs4_stateid(xdr, args->open_stateid);
1281 encode_nfs4_seqid(xdr, args->lock_seqid);
1282 encode_lockowner(xdr, &args->lock_owner);
1283 }
1284 else {
1285 encode_nfs4_stateid(xdr, args->lock_stateid);
1286 encode_nfs4_seqid(xdr, args->lock_seqid);
1287 }
1288}
1289
1290static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1291{
1292 __be32 *p;
1293
1294 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1295 p = reserve_space(xdr, 20);
1296 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1297 p = xdr_encode_hyper(p, args->fl->fl_start);
1298 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1299 encode_lockowner(xdr, &args->lock_owner);
1300}
1301
1302static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1303{
1304 __be32 *p;
1305
1306 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1307 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1308 encode_nfs4_seqid(xdr, args->seqid);
1309 encode_nfs4_stateid(xdr, args->stateid);
1310 p = reserve_space(xdr, 16);
1311 p = xdr_encode_hyper(p, args->fl->fl_start);
1312 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1313}
1314
1315static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1316{
1317 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1318 encode_lockowner(xdr, lowner);
1319}
1320
1321static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1322{
1323 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1324 encode_string(xdr, name->len, name->name);
1325}
1326
1327static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1328{
1329 __be32 *p;
1330
1331 p = reserve_space(xdr, 8);
1332 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1333 case FMODE_READ:
1334 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1335 break;
1336 case FMODE_WRITE:
1337 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1338 break;
1339 case FMODE_READ|FMODE_WRITE:
1340 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1341 break;
1342 default:
1343 *p++ = cpu_to_be32(0);
1344 }
1345 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1346}
1347
1348static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1349{
1350 __be32 *p;
1351 /*
1352 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1353 * owner 4 = 32
1354 */
1355 encode_nfs4_seqid(xdr, arg->seqid);
1356 encode_share_access(xdr, arg->fmode);
1357 p = reserve_space(xdr, 36);
1358 p = xdr_encode_hyper(p, arg->clientid);
1359 *p++ = cpu_to_be32(24);
1360 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1361 *p++ = cpu_to_be32(arg->server->s_dev);
1362 *p++ = cpu_to_be32(arg->id.uniquifier);
1363 xdr_encode_hyper(p, arg->id.create_time);
1364}
1365
1366static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1367{
1368 __be32 *p;
1369 struct nfs_client *clp;
1370
1371 p = reserve_space(xdr, 4);
1372 switch(arg->open_flags & O_EXCL) {
1373 case 0:
1374 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1375 encode_attrs(xdr, arg->u.attrs, arg->server);
1376 break;
1377 default:
1378 clp = arg->server->nfs_client;
1379 if (clp->cl_mvops->minor_version > 0) {
1380 if (nfs4_has_persistent_session(clp)) {
1381 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1382 encode_attrs(xdr, arg->u.attrs, arg->server);
1383 } else {
1384 struct iattr dummy;
1385
1386 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1387 encode_nfs4_verifier(xdr, &arg->u.verifier);
1388 dummy.ia_valid = 0;
1389 encode_attrs(xdr, &dummy, arg->server);
1390 }
1391 } else {
1392 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1393 encode_nfs4_verifier(xdr, &arg->u.verifier);
1394 }
1395 }
1396}
1397
1398static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1399{
1400 __be32 *p;
1401
1402 p = reserve_space(xdr, 4);
1403 switch (arg->open_flags & O_CREAT) {
1404 case 0:
1405 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1406 break;
1407 default:
1408 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1409 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1410 encode_createmode(xdr, arg);
1411 }
1412}
1413
1414static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1415{
1416 __be32 *p;
1417
1418 p = reserve_space(xdr, 4);
1419 switch (delegation_type) {
1420 case 0:
1421 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1422 break;
1423 case FMODE_READ:
1424 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1425 break;
1426 case FMODE_WRITE|FMODE_READ:
1427 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1428 break;
1429 default:
1430 BUG();
1431 }
1432}
1433
1434static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1435{
1436 __be32 *p;
1437
1438 p = reserve_space(xdr, 4);
1439 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1440 encode_string(xdr, name->len, name->name);
1441}
1442
1443static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1444{
1445 __be32 *p;
1446
1447 p = reserve_space(xdr, 4);
1448 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1449 encode_delegation_type(xdr, type);
1450}
1451
1452static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1453{
1454 __be32 *p;
1455
1456 p = reserve_space(xdr, 4);
1457 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1458 encode_nfs4_stateid(xdr, stateid);
1459 encode_string(xdr, name->len, name->name);
1460}
1461
1462static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1463{
1464 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1465 encode_openhdr(xdr, arg);
1466 encode_opentype(xdr, arg);
1467 switch (arg->claim) {
1468 case NFS4_OPEN_CLAIM_NULL:
1469 encode_claim_null(xdr, arg->name);
1470 break;
1471 case NFS4_OPEN_CLAIM_PREVIOUS:
1472 encode_claim_previous(xdr, arg->u.delegation_type);
1473 break;
1474 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1475 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1476 break;
1477 default:
1478 BUG();
1479 }
1480}
1481
1482static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1483{
1484 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1485 encode_nfs4_stateid(xdr, arg->stateid);
1486 encode_nfs4_seqid(xdr, arg->seqid);
1487}
1488
1489static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1490{
1491 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1492 encode_nfs4_stateid(xdr, arg->stateid);
1493 encode_nfs4_seqid(xdr, arg->seqid);
1494 encode_share_access(xdr, arg->fmode);
1495}
1496
1497static void
1498encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1499{
1500 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1501 encode_string(xdr, fh->size, fh->data);
1502}
1503
1504static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1505{
1506 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1507}
1508
1509static void encode_open_stateid(struct xdr_stream *xdr,
1510 const struct nfs_open_context *ctx,
1511 const struct nfs_lock_context *l_ctx,
1512 fmode_t fmode,
1513 int zero_seqid)
1514{
1515 nfs4_stateid stateid;
1516
1517 if (ctx->state != NULL) {
1518 nfs4_select_rw_stateid(&stateid, ctx->state,
1519 fmode, l_ctx->lockowner, l_ctx->pid);
1520 if (zero_seqid)
1521 stateid.seqid = 0;
1522 encode_nfs4_stateid(xdr, &stateid);
1523 } else
1524 encode_nfs4_stateid(xdr, &zero_stateid);
1525}
1526
1527static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1528{
1529 __be32 *p;
1530
1531 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1532 encode_open_stateid(xdr, args->context, args->lock_context,
1533 FMODE_READ, hdr->minorversion);
1534
1535 p = reserve_space(xdr, 12);
1536 p = xdr_encode_hyper(p, args->offset);
1537 *p = cpu_to_be32(args->count);
1538}
1539
1540static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1541{
1542 uint32_t attrs[2] = {
1543 FATTR4_WORD0_RDATTR_ERROR,
1544 FATTR4_WORD1_MOUNTED_ON_FILEID,
1545 };
1546 uint32_t dircount = readdir->count >> 1;
1547 __be32 *p, verf[2];
1548
1549 if (readdir->plus) {
1550 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1551 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1552 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1553 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1554 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1555 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1556 dircount >>= 1;
1557 }
1558 /* Use mounted_on_fileid only if the server supports it */
1559 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1560 attrs[0] |= FATTR4_WORD0_FILEID;
1561
1562 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1563 encode_uint64(xdr, readdir->cookie);
1564 encode_nfs4_verifier(xdr, &readdir->verifier);
1565 p = reserve_space(xdr, 20);
1566 *p++ = cpu_to_be32(dircount);
1567 *p++ = cpu_to_be32(readdir->count);
1568 *p++ = cpu_to_be32(2);
1569
1570 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1571 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1572 memcpy(verf, readdir->verifier.data, sizeof(verf));
1573 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1574 __func__,
1575 (unsigned long long)readdir->cookie,
1576 verf[0], verf[1],
1577 attrs[0] & readdir->bitmask[0],
1578 attrs[1] & readdir->bitmask[1]);
1579}
1580
1581static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1582{
1583 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1584}
1585
1586static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1587{
1588 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1589 encode_string(xdr, name->len, name->name);
1590}
1591
1592static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1593{
1594 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1595 encode_string(xdr, oldname->len, oldname->name);
1596 encode_string(xdr, newname->len, newname->name);
1597}
1598
1599static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1600 struct compound_hdr *hdr)
1601{
1602 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1603 encode_uint64(xdr, clid);
1604}
1605
1606static void
1607encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1608{
1609 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1610}
1611
1612static void
1613encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1614{
1615 __be32 *p;
1616
1617 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1618 encode_nfs4_stateid(xdr, &zero_stateid);
1619 p = reserve_space(xdr, 2*4);
1620 *p++ = cpu_to_be32(1);
1621 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1622 BUG_ON(arg->acl_len % 4);
1623 p = reserve_space(xdr, 4);
1624 *p = cpu_to_be32(arg->acl_len);
1625 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1626}
1627
1628static void
1629encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1630{
1631 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1632}
1633
1634static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1635{
1636 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1637 encode_nfs4_stateid(xdr, &arg->stateid);
1638 encode_attrs(xdr, arg->iap, server);
1639}
1640
1641static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1642{
1643 __be32 *p;
1644
1645 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1646 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1647
1648 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1649 p = reserve_space(xdr, 4);
1650 *p = cpu_to_be32(setclientid->sc_prog);
1651 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1652 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1653 p = reserve_space(xdr, 4);
1654 *p = cpu_to_be32(setclientid->sc_cb_ident);
1655}
1656
1657static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1658{
1659 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1660 decode_setclientid_confirm_maxsz, hdr);
1661 encode_uint64(xdr, arg->clientid);
1662 encode_nfs4_verifier(xdr, &arg->confirm);
1663}
1664
1665static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1666{
1667 __be32 *p;
1668
1669 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1670 encode_open_stateid(xdr, args->context, args->lock_context,
1671 FMODE_WRITE, hdr->minorversion);
1672
1673 p = reserve_space(xdr, 16);
1674 p = xdr_encode_hyper(p, args->offset);
1675 *p++ = cpu_to_be32(args->stable);
1676 *p = cpu_to_be32(args->count);
1677
1678 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1679}
1680
1681static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1682{
1683 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1684 encode_nfs4_stateid(xdr, stateid);
1685}
1686
1687static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1688{
1689 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1690 encode_string(xdr, name->len, name->name);
1691}
1692
1693#if defined(CONFIG_NFS_V4_1)
1694/* NFSv4.1 operations */
1695static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1696 struct nfs4_session *session,
1697 struct compound_hdr *hdr)
1698{
1699 __be32 *p;
1700
1701 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1702 decode_bind_conn_to_session_maxsz, hdr);
1703 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1704 p = xdr_reserve_space(xdr, 8);
1705 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1706 *p = 0; /* use_conn_in_rdma_mode = False */
1707}
1708
1709static void encode_exchange_id(struct xdr_stream *xdr,
1710 struct nfs41_exchange_id_args *args,
1711 struct compound_hdr *hdr)
1712{
1713 __be32 *p;
1714 char impl_name[NFS4_OPAQUE_LIMIT];
1715 int len = 0;
1716
1717 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1718 encode_nfs4_verifier(xdr, args->verifier);
1719
1720 encode_string(xdr, args->id_len, args->id);
1721
1722 p = reserve_space(xdr, 12);
1723 *p++ = cpu_to_be32(args->flags);
1724 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1725
1726 if (send_implementation_id &&
1727 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1728 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1729 <= NFS4_OPAQUE_LIMIT + 1)
1730 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1731 utsname()->sysname, utsname()->release,
1732 utsname()->version, utsname()->machine);
1733
1734 if (len > 0) {
1735 *p = cpu_to_be32(1); /* implementation id array length=1 */
1736
1737 encode_string(xdr,
1738 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1739 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1740 encode_string(xdr, len, impl_name);
1741 /* just send zeros for nii_date - the date is in nii_name */
1742 p = reserve_space(xdr, 12);
1743 p = xdr_encode_hyper(p, 0);
1744 *p = cpu_to_be32(0);
1745 } else
1746 *p = cpu_to_be32(0); /* implementation id array length=0 */
1747}
1748
1749static void encode_create_session(struct xdr_stream *xdr,
1750 struct nfs41_create_session_args *args,
1751 struct compound_hdr *hdr)
1752{
1753 __be32 *p;
1754 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1755 uint32_t len;
1756 struct nfs_client *clp = args->client;
1757 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1758 u32 max_resp_sz_cached;
1759
1760 /*
1761 * Assumes OPEN is the biggest non-idempotent compound.
1762 * 2 is the verifier.
1763 */
1764 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1765 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1766
1767 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1768 clp->cl_ipaddr);
1769
1770 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1771 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1772 p = xdr_encode_hyper(p, clp->cl_clientid);
1773 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1774 *p++ = cpu_to_be32(args->flags); /*flags */
1775
1776 /* Fore Channel */
1777 *p++ = cpu_to_be32(0); /* header padding size */
1778 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1779 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1780 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1781 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1782 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1783 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1784
1785 /* Back Channel */
1786 *p++ = cpu_to_be32(0); /* header padding size */
1787 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1788 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1789 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1790 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1791 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1792 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1793
1794 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1795 *p++ = cpu_to_be32(1);
1796 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1797
1798 /* authsys_parms rfc1831 */
1799 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1800 p = xdr_encode_opaque(p, machine_name, len);
1801 *p++ = cpu_to_be32(0); /* UID */
1802 *p++ = cpu_to_be32(0); /* GID */
1803 *p = cpu_to_be32(0); /* No more gids */
1804}
1805
1806static void encode_destroy_session(struct xdr_stream *xdr,
1807 struct nfs4_session *session,
1808 struct compound_hdr *hdr)
1809{
1810 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1811 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1812}
1813
1814static void encode_destroy_clientid(struct xdr_stream *xdr,
1815 uint64_t clientid,
1816 struct compound_hdr *hdr)
1817{
1818 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1819 encode_uint64(xdr, clientid);
1820}
1821
1822static void encode_reclaim_complete(struct xdr_stream *xdr,
1823 struct nfs41_reclaim_complete_args *args,
1824 struct compound_hdr *hdr)
1825{
1826 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1827 encode_uint32(xdr, args->one_fs);
1828}
1829#endif /* CONFIG_NFS_V4_1 */
1830
1831static void encode_sequence(struct xdr_stream *xdr,
1832 const struct nfs4_sequence_args *args,
1833 struct compound_hdr *hdr)
1834{
1835#if defined(CONFIG_NFS_V4_1)
1836 struct nfs4_session *session = args->sa_session;
1837 struct nfs4_slot_table *tp;
1838 struct nfs4_slot *slot;
1839 __be32 *p;
1840
1841 if (!session)
1842 return;
1843
1844 tp = &session->fc_slot_table;
1845
1846 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1847 slot = tp->slots + args->sa_slotid;
1848
1849 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1850
1851 /*
1852 * Sessionid + seqid + slotid + max slotid + cache_this
1853 */
1854 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1855 "max_slotid=%d cache_this=%d\n",
1856 __func__,
1857 ((u32 *)session->sess_id.data)[0],
1858 ((u32 *)session->sess_id.data)[1],
1859 ((u32 *)session->sess_id.data)[2],
1860 ((u32 *)session->sess_id.data)[3],
1861 slot->seq_nr, args->sa_slotid,
1862 tp->highest_used_slotid, args->sa_cache_this);
1863 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1864 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1865 *p++ = cpu_to_be32(slot->seq_nr);
1866 *p++ = cpu_to_be32(args->sa_slotid);
1867 *p++ = cpu_to_be32(tp->highest_used_slotid);
1868 *p = cpu_to_be32(args->sa_cache_this);
1869#endif /* CONFIG_NFS_V4_1 */
1870}
1871
1872#ifdef CONFIG_NFS_V4_1
1873static void
1874encode_getdevicelist(struct xdr_stream *xdr,
1875 const struct nfs4_getdevicelist_args *args,
1876 struct compound_hdr *hdr)
1877{
1878 __be32 *p;
1879 nfs4_verifier dummy = {
1880 .data = "dummmmmy",
1881 };
1882
1883 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1884 p = reserve_space(xdr, 16);
1885 *p++ = cpu_to_be32(args->layoutclass);
1886 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1887 xdr_encode_hyper(p, 0ULL); /* cookie */
1888 encode_nfs4_verifier(xdr, &dummy);
1889}
1890
1891static void
1892encode_getdeviceinfo(struct xdr_stream *xdr,
1893 const struct nfs4_getdeviceinfo_args *args,
1894 struct compound_hdr *hdr)
1895{
1896 __be32 *p;
1897
1898 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1899 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1900 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1901 NFS4_DEVICEID4_SIZE);
1902 *p++ = cpu_to_be32(args->pdev->layout_type);
1903 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1904 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1905}
1906
1907static void
1908encode_layoutget(struct xdr_stream *xdr,
1909 const struct nfs4_layoutget_args *args,
1910 struct compound_hdr *hdr)
1911{
1912 __be32 *p;
1913
1914 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1915 p = reserve_space(xdr, 36);
1916 *p++ = cpu_to_be32(0); /* Signal layout available */
1917 *p++ = cpu_to_be32(args->type);
1918 *p++ = cpu_to_be32(args->range.iomode);
1919 p = xdr_encode_hyper(p, args->range.offset);
1920 p = xdr_encode_hyper(p, args->range.length);
1921 p = xdr_encode_hyper(p, args->minlength);
1922 encode_nfs4_stateid(xdr, &args->stateid);
1923 encode_uint32(xdr, args->maxcount);
1924
1925 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1926 __func__,
1927 args->type,
1928 args->range.iomode,
1929 (unsigned long)args->range.offset,
1930 (unsigned long)args->range.length,
1931 args->maxcount);
1932}
1933
1934static int
1935encode_layoutcommit(struct xdr_stream *xdr,
1936 struct inode *inode,
1937 const struct nfs4_layoutcommit_args *args,
1938 struct compound_hdr *hdr)
1939{
1940 __be32 *p;
1941
1942 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1943 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1944
1945 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1946 p = reserve_space(xdr, 20);
1947 /* Only whole file layouts */
1948 p = xdr_encode_hyper(p, 0); /* offset */
1949 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1950 *p = cpu_to_be32(0); /* reclaim */
1951 encode_nfs4_stateid(xdr, &args->stateid);
1952 p = reserve_space(xdr, 20);
1953 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1954 p = xdr_encode_hyper(p, args->lastbytewritten);
1955 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1956 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1957
1958 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1959 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1960 NFS_I(inode)->layout, xdr, args);
1961 else
1962 encode_uint32(xdr, 0); /* no layout-type payload */
1963
1964 return 0;
1965}
1966
1967static void
1968encode_layoutreturn(struct xdr_stream *xdr,
1969 const struct nfs4_layoutreturn_args *args,
1970 struct compound_hdr *hdr)
1971{
1972 __be32 *p;
1973
1974 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1975 p = reserve_space(xdr, 16);
1976 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1977 *p++ = cpu_to_be32(args->layout_type);
1978 *p++ = cpu_to_be32(IOMODE_ANY);
1979 *p = cpu_to_be32(RETURN_FILE);
1980 p = reserve_space(xdr, 16);
1981 p = xdr_encode_hyper(p, 0);
1982 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1983 spin_lock(&args->inode->i_lock);
1984 encode_nfs4_stateid(xdr, &args->stateid);
1985 spin_unlock(&args->inode->i_lock);
1986 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1987 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1988 NFS_I(args->inode)->layout, xdr, args);
1989 } else
1990 encode_uint32(xdr, 0);
1991}
1992
1993static int
1994encode_secinfo_no_name(struct xdr_stream *xdr,
1995 const struct nfs41_secinfo_no_name_args *args,
1996 struct compound_hdr *hdr)
1997{
1998 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
1999 encode_uint32(xdr, args->style);
2000 return 0;
2001}
2002
2003static void encode_test_stateid(struct xdr_stream *xdr,
2004 struct nfs41_test_stateid_args *args,
2005 struct compound_hdr *hdr)
2006{
2007 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2008 encode_uint32(xdr, 1);
2009 encode_nfs4_stateid(xdr, args->stateid);
2010}
2011
2012static void encode_free_stateid(struct xdr_stream *xdr,
2013 struct nfs41_free_stateid_args *args,
2014 struct compound_hdr *hdr)
2015{
2016 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2017 encode_nfs4_stateid(xdr, args->stateid);
2018}
2019#endif /* CONFIG_NFS_V4_1 */
2020
2021/*
2022 * END OF "GENERIC" ENCODE ROUTINES.
2023 */
2024
2025static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2026{
2027#if defined(CONFIG_NFS_V4_1)
2028 if (args->sa_session)
2029 return args->sa_session->clp->cl_mvops->minor_version;
2030#endif /* CONFIG_NFS_V4_1 */
2031 return 0;
2032}
2033
2034/*
2035 * Encode an ACCESS request
2036 */
2037static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2038 const struct nfs4_accessargs *args)
2039{
2040 struct compound_hdr hdr = {
2041 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2042 };
2043
2044 encode_compound_hdr(xdr, req, &hdr);
2045 encode_sequence(xdr, &args->seq_args, &hdr);
2046 encode_putfh(xdr, args->fh, &hdr);
2047 encode_access(xdr, args->access, &hdr);
2048 encode_getfattr(xdr, args->bitmask, &hdr);
2049 encode_nops(&hdr);
2050}
2051
2052/*
2053 * Encode LOOKUP request
2054 */
2055static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2056 const struct nfs4_lookup_arg *args)
2057{
2058 struct compound_hdr hdr = {
2059 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2060 };
2061
2062 encode_compound_hdr(xdr, req, &hdr);
2063 encode_sequence(xdr, &args->seq_args, &hdr);
2064 encode_putfh(xdr, args->dir_fh, &hdr);
2065 encode_lookup(xdr, args->name, &hdr);
2066 encode_getfh(xdr, &hdr);
2067 encode_getfattr(xdr, args->bitmask, &hdr);
2068 encode_nops(&hdr);
2069}
2070
2071/*
2072 * Encode LOOKUP_ROOT request
2073 */
2074static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2075 struct xdr_stream *xdr,
2076 const struct nfs4_lookup_root_arg *args)
2077{
2078 struct compound_hdr hdr = {
2079 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2080 };
2081
2082 encode_compound_hdr(xdr, req, &hdr);
2083 encode_sequence(xdr, &args->seq_args, &hdr);
2084 encode_putrootfh(xdr, &hdr);
2085 encode_getfh(xdr, &hdr);
2086 encode_getfattr(xdr, args->bitmask, &hdr);
2087 encode_nops(&hdr);
2088}
2089
2090/*
2091 * Encode REMOVE request
2092 */
2093static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2094 const struct nfs_removeargs *args)
2095{
2096 struct compound_hdr hdr = {
2097 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2098 };
2099
2100 encode_compound_hdr(xdr, req, &hdr);
2101 encode_sequence(xdr, &args->seq_args, &hdr);
2102 encode_putfh(xdr, args->fh, &hdr);
2103 encode_remove(xdr, &args->name, &hdr);
2104 encode_nops(&hdr);
2105}
2106
2107/*
2108 * Encode RENAME request
2109 */
2110static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2111 const struct nfs_renameargs *args)
2112{
2113 struct compound_hdr hdr = {
2114 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2115 };
2116
2117 encode_compound_hdr(xdr, req, &hdr);
2118 encode_sequence(xdr, &args->seq_args, &hdr);
2119 encode_putfh(xdr, args->old_dir, &hdr);
2120 encode_savefh(xdr, &hdr);
2121 encode_putfh(xdr, args->new_dir, &hdr);
2122 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2123 encode_nops(&hdr);
2124}
2125
2126/*
2127 * Encode LINK request
2128 */
2129static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2130 const struct nfs4_link_arg *args)
2131{
2132 struct compound_hdr hdr = {
2133 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2134 };
2135
2136 encode_compound_hdr(xdr, req, &hdr);
2137 encode_sequence(xdr, &args->seq_args, &hdr);
2138 encode_putfh(xdr, args->fh, &hdr);
2139 encode_savefh(xdr, &hdr);
2140 encode_putfh(xdr, args->dir_fh, &hdr);
2141 encode_link(xdr, args->name, &hdr);
2142 encode_restorefh(xdr, &hdr);
2143 encode_getfattr(xdr, args->bitmask, &hdr);
2144 encode_nops(&hdr);
2145}
2146
2147/*
2148 * Encode CREATE request
2149 */
2150static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2151 const struct nfs4_create_arg *args)
2152{
2153 struct compound_hdr hdr = {
2154 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2155 };
2156
2157 encode_compound_hdr(xdr, req, &hdr);
2158 encode_sequence(xdr, &args->seq_args, &hdr);
2159 encode_putfh(xdr, args->dir_fh, &hdr);
2160 encode_create(xdr, args, &hdr);
2161 encode_getfh(xdr, &hdr);
2162 encode_getfattr(xdr, args->bitmask, &hdr);
2163 encode_nops(&hdr);
2164}
2165
2166/*
2167 * Encode SYMLINK request
2168 */
2169static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2170 const struct nfs4_create_arg *args)
2171{
2172 nfs4_xdr_enc_create(req, xdr, args);
2173}
2174
2175/*
2176 * Encode GETATTR request
2177 */
2178static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2179 const struct nfs4_getattr_arg *args)
2180{
2181 struct compound_hdr hdr = {
2182 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2183 };
2184
2185 encode_compound_hdr(xdr, req, &hdr);
2186 encode_sequence(xdr, &args->seq_args, &hdr);
2187 encode_putfh(xdr, args->fh, &hdr);
2188 encode_getfattr(xdr, args->bitmask, &hdr);
2189 encode_nops(&hdr);
2190}
2191
2192/*
2193 * Encode a CLOSE request
2194 */
2195static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2196 struct nfs_closeargs *args)
2197{
2198 struct compound_hdr hdr = {
2199 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2200 };
2201
2202 encode_compound_hdr(xdr, req, &hdr);
2203 encode_sequence(xdr, &args->seq_args, &hdr);
2204 encode_putfh(xdr, args->fh, &hdr);
2205 encode_close(xdr, args, &hdr);
2206 encode_getfattr(xdr, args->bitmask, &hdr);
2207 encode_nops(&hdr);
2208}
2209
2210/*
2211 * Encode an OPEN request
2212 */
2213static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2214 struct nfs_openargs *args)
2215{
2216 struct compound_hdr hdr = {
2217 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2218 };
2219
2220 encode_compound_hdr(xdr, req, &hdr);
2221 encode_sequence(xdr, &args->seq_args, &hdr);
2222 encode_putfh(xdr, args->fh, &hdr);
2223 encode_open(xdr, args, &hdr);
2224 encode_getfh(xdr, &hdr);
2225 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2226 encode_nops(&hdr);
2227}
2228
2229/*
2230 * Encode an OPEN_CONFIRM request
2231 */
2232static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2233 struct xdr_stream *xdr,
2234 struct nfs_open_confirmargs *args)
2235{
2236 struct compound_hdr hdr = {
2237 .nops = 0,
2238 };
2239
2240 encode_compound_hdr(xdr, req, &hdr);
2241 encode_putfh(xdr, args->fh, &hdr);
2242 encode_open_confirm(xdr, args, &hdr);
2243 encode_nops(&hdr);
2244}
2245
2246/*
2247 * Encode an OPEN request with no attributes.
2248 */
2249static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2250 struct xdr_stream *xdr,
2251 struct nfs_openargs *args)
2252{
2253 struct compound_hdr hdr = {
2254 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2255 };
2256
2257 encode_compound_hdr(xdr, req, &hdr);
2258 encode_sequence(xdr, &args->seq_args, &hdr);
2259 encode_putfh(xdr, args->fh, &hdr);
2260 encode_open(xdr, args, &hdr);
2261 encode_getfattr(xdr, args->bitmask, &hdr);
2262 encode_nops(&hdr);
2263}
2264
2265/*
2266 * Encode an OPEN_DOWNGRADE request
2267 */
2268static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2269 struct xdr_stream *xdr,
2270 struct nfs_closeargs *args)
2271{
2272 struct compound_hdr hdr = {
2273 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2274 };
2275
2276 encode_compound_hdr(xdr, req, &hdr);
2277 encode_sequence(xdr, &args->seq_args, &hdr);
2278 encode_putfh(xdr, args->fh, &hdr);
2279 encode_open_downgrade(xdr, args, &hdr);
2280 encode_getfattr(xdr, args->bitmask, &hdr);
2281 encode_nops(&hdr);
2282}
2283
2284/*
2285 * Encode a LOCK request
2286 */
2287static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2288 struct nfs_lock_args *args)
2289{
2290 struct compound_hdr hdr = {
2291 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2292 };
2293
2294 encode_compound_hdr(xdr, req, &hdr);
2295 encode_sequence(xdr, &args->seq_args, &hdr);
2296 encode_putfh(xdr, args->fh, &hdr);
2297 encode_lock(xdr, args, &hdr);
2298 encode_nops(&hdr);
2299}
2300
2301/*
2302 * Encode a LOCKT request
2303 */
2304static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2305 struct nfs_lockt_args *args)
2306{
2307 struct compound_hdr hdr = {
2308 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2309 };
2310
2311 encode_compound_hdr(xdr, req, &hdr);
2312 encode_sequence(xdr, &args->seq_args, &hdr);
2313 encode_putfh(xdr, args->fh, &hdr);
2314 encode_lockt(xdr, args, &hdr);
2315 encode_nops(&hdr);
2316}
2317
2318/*
2319 * Encode a LOCKU request
2320 */
2321static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2322 struct nfs_locku_args *args)
2323{
2324 struct compound_hdr hdr = {
2325 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2326 };
2327
2328 encode_compound_hdr(xdr, req, &hdr);
2329 encode_sequence(xdr, &args->seq_args, &hdr);
2330 encode_putfh(xdr, args->fh, &hdr);
2331 encode_locku(xdr, args, &hdr);
2332 encode_nops(&hdr);
2333}
2334
2335static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2336 struct xdr_stream *xdr,
2337 struct nfs_release_lockowner_args *args)
2338{
2339 struct compound_hdr hdr = {
2340 .minorversion = 0,
2341 };
2342
2343 encode_compound_hdr(xdr, req, &hdr);
2344 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2345 encode_nops(&hdr);
2346}
2347
2348/*
2349 * Encode a READLINK request
2350 */
2351static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2352 const struct nfs4_readlink *args)
2353{
2354 struct compound_hdr hdr = {
2355 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2356 };
2357
2358 encode_compound_hdr(xdr, req, &hdr);
2359 encode_sequence(xdr, &args->seq_args, &hdr);
2360 encode_putfh(xdr, args->fh, &hdr);
2361 encode_readlink(xdr, args, req, &hdr);
2362
2363 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2364 args->pgbase, args->pglen);
2365 encode_nops(&hdr);
2366}
2367
2368/*
2369 * Encode a READDIR request
2370 */
2371static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2372 const struct nfs4_readdir_arg *args)
2373{
2374 struct compound_hdr hdr = {
2375 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2376 };
2377
2378 encode_compound_hdr(xdr, req, &hdr);
2379 encode_sequence(xdr, &args->seq_args, &hdr);
2380 encode_putfh(xdr, args->fh, &hdr);
2381 encode_readdir(xdr, args, req, &hdr);
2382
2383 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2384 args->pgbase, args->count);
2385 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2386 __func__, hdr.replen << 2, args->pages,
2387 args->pgbase, args->count);
2388 encode_nops(&hdr);
2389}
2390
2391/*
2392 * Encode a READ request
2393 */
2394static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2395 struct nfs_readargs *args)
2396{
2397 struct compound_hdr hdr = {
2398 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2399 };
2400
2401 encode_compound_hdr(xdr, req, &hdr);
2402 encode_sequence(xdr, &args->seq_args, &hdr);
2403 encode_putfh(xdr, args->fh, &hdr);
2404 encode_read(xdr, args, &hdr);
2405
2406 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2407 args->pages, args->pgbase, args->count);
2408 req->rq_rcv_buf.flags |= XDRBUF_READ;
2409 encode_nops(&hdr);
2410}
2411
2412/*
2413 * Encode an SETATTR request
2414 */
2415static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2416 struct nfs_setattrargs *args)
2417{
2418 struct compound_hdr hdr = {
2419 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2420 };
2421
2422 encode_compound_hdr(xdr, req, &hdr);
2423 encode_sequence(xdr, &args->seq_args, &hdr);
2424 encode_putfh(xdr, args->fh, &hdr);
2425 encode_setattr(xdr, args, args->server, &hdr);
2426 encode_getfattr(xdr, args->bitmask, &hdr);
2427 encode_nops(&hdr);
2428}
2429
2430/*
2431 * Encode a GETACL request
2432 */
2433static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2434 struct nfs_getaclargs *args)
2435{
2436 struct compound_hdr hdr = {
2437 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2438 };
2439 uint32_t replen;
2440
2441 encode_compound_hdr(xdr, req, &hdr);
2442 encode_sequence(xdr, &args->seq_args, &hdr);
2443 encode_putfh(xdr, args->fh, &hdr);
2444 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2445 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2446
2447 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2448 args->acl_pages, args->acl_pgbase, args->acl_len);
2449
2450 encode_nops(&hdr);
2451}
2452
2453/*
2454 * Encode a WRITE request
2455 */
2456static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2457 struct nfs_writeargs *args)
2458{
2459 struct compound_hdr hdr = {
2460 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2461 };
2462
2463 encode_compound_hdr(xdr, req, &hdr);
2464 encode_sequence(xdr, &args->seq_args, &hdr);
2465 encode_putfh(xdr, args->fh, &hdr);
2466 encode_write(xdr, args, &hdr);
2467 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2468 if (args->bitmask)
2469 encode_getfattr(xdr, args->bitmask, &hdr);
2470 encode_nops(&hdr);
2471}
2472
2473/*
2474 * a COMMIT request
2475 */
2476static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2477 struct nfs_commitargs *args)
2478{
2479 struct compound_hdr hdr = {
2480 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2481 };
2482
2483 encode_compound_hdr(xdr, req, &hdr);
2484 encode_sequence(xdr, &args->seq_args, &hdr);
2485 encode_putfh(xdr, args->fh, &hdr);
2486 encode_commit(xdr, args, &hdr);
2487 encode_nops(&hdr);
2488}
2489
2490/*
2491 * FSINFO request
2492 */
2493static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2494 struct nfs4_fsinfo_arg *args)
2495{
2496 struct compound_hdr hdr = {
2497 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2498 };
2499
2500 encode_compound_hdr(xdr, req, &hdr);
2501 encode_sequence(xdr, &args->seq_args, &hdr);
2502 encode_putfh(xdr, args->fh, &hdr);
2503 encode_fsinfo(xdr, args->bitmask, &hdr);
2504 encode_nops(&hdr);
2505}
2506
2507/*
2508 * a PATHCONF request
2509 */
2510static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2511 const struct nfs4_pathconf_arg *args)
2512{
2513 struct compound_hdr hdr = {
2514 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2515 };
2516
2517 encode_compound_hdr(xdr, req, &hdr);
2518 encode_sequence(xdr, &args->seq_args, &hdr);
2519 encode_putfh(xdr, args->fh, &hdr);
2520 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2521 &hdr);
2522 encode_nops(&hdr);
2523}
2524
2525/*
2526 * a STATFS request
2527 */
2528static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2529 const struct nfs4_statfs_arg *args)
2530{
2531 struct compound_hdr hdr = {
2532 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2533 };
2534
2535 encode_compound_hdr(xdr, req, &hdr);
2536 encode_sequence(xdr, &args->seq_args, &hdr);
2537 encode_putfh(xdr, args->fh, &hdr);
2538 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2539 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2540 encode_nops(&hdr);
2541}
2542
2543/*
2544 * GETATTR_BITMAP request
2545 */
2546static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2547 struct xdr_stream *xdr,
2548 struct nfs4_server_caps_arg *args)
2549{
2550 struct compound_hdr hdr = {
2551 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2552 };
2553
2554 encode_compound_hdr(xdr, req, &hdr);
2555 encode_sequence(xdr, &args->seq_args, &hdr);
2556 encode_putfh(xdr, args->fhandle, &hdr);
2557 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2558 FATTR4_WORD0_FH_EXPIRE_TYPE|
2559 FATTR4_WORD0_LINK_SUPPORT|
2560 FATTR4_WORD0_SYMLINK_SUPPORT|
2561 FATTR4_WORD0_ACLSUPPORT, &hdr);
2562 encode_nops(&hdr);
2563}
2564
2565/*
2566 * a RENEW request
2567 */
2568static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2569 struct nfs_client *clp)
2570{
2571 struct compound_hdr hdr = {
2572 .nops = 0,
2573 };
2574
2575 encode_compound_hdr(xdr, req, &hdr);
2576 encode_renew(xdr, clp->cl_clientid, &hdr);
2577 encode_nops(&hdr);
2578}
2579
2580/*
2581 * a SETCLIENTID request
2582 */
2583static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2584 struct xdr_stream *xdr,
2585 struct nfs4_setclientid *sc)
2586{
2587 struct compound_hdr hdr = {
2588 .nops = 0,
2589 };
2590
2591 encode_compound_hdr(xdr, req, &hdr);
2592 encode_setclientid(xdr, sc, &hdr);
2593 encode_nops(&hdr);
2594}
2595
2596/*
2597 * a SETCLIENTID_CONFIRM request
2598 */
2599static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2600 struct xdr_stream *xdr,
2601 struct nfs4_setclientid_res *arg)
2602{
2603 struct compound_hdr hdr = {
2604 .nops = 0,
2605 };
2606 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2607
2608 encode_compound_hdr(xdr, req, &hdr);
2609 encode_setclientid_confirm(xdr, arg, &hdr);
2610 encode_putrootfh(xdr, &hdr);
2611 encode_fsinfo(xdr, lease_bitmap, &hdr);
2612 encode_nops(&hdr);
2613}
2614
2615/*
2616 * DELEGRETURN request
2617 */
2618static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2619 struct xdr_stream *xdr,
2620 const struct nfs4_delegreturnargs *args)
2621{
2622 struct compound_hdr hdr = {
2623 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2624 };
2625
2626 encode_compound_hdr(xdr, req, &hdr);
2627 encode_sequence(xdr, &args->seq_args, &hdr);
2628 encode_putfh(xdr, args->fhandle, &hdr);
2629 encode_getfattr(xdr, args->bitmask, &hdr);
2630 encode_delegreturn(xdr, args->stateid, &hdr);
2631 encode_nops(&hdr);
2632}
2633
2634/*
2635 * Encode FS_LOCATIONS request
2636 */
2637static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2638 struct xdr_stream *xdr,
2639 struct nfs4_fs_locations_arg *args)
2640{
2641 struct compound_hdr hdr = {
2642 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2643 };
2644 uint32_t replen;
2645
2646 encode_compound_hdr(xdr, req, &hdr);
2647 encode_sequence(xdr, &args->seq_args, &hdr);
2648 encode_putfh(xdr, args->dir_fh, &hdr);
2649 encode_lookup(xdr, args->name, &hdr);
2650 replen = hdr.replen; /* get the attribute into args->page */
2651 encode_fs_locations(xdr, args->bitmask, &hdr);
2652
2653 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2654 0, PAGE_SIZE);
2655 encode_nops(&hdr);
2656}
2657
2658/*
2659 * Encode SECINFO request
2660 */
2661static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2662 struct xdr_stream *xdr,
2663 struct nfs4_secinfo_arg *args)
2664{
2665 struct compound_hdr hdr = {
2666 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2667 };
2668
2669 encode_compound_hdr(xdr, req, &hdr);
2670 encode_sequence(xdr, &args->seq_args, &hdr);
2671 encode_putfh(xdr, args->dir_fh, &hdr);
2672 encode_secinfo(xdr, args->name, &hdr);
2673 encode_nops(&hdr);
2674}
2675
2676#if defined(CONFIG_NFS_V4_1)
2677/*
2678 * BIND_CONN_TO_SESSION request
2679 */
2680static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2681 struct xdr_stream *xdr,
2682 struct nfs_client *clp)
2683{
2684 struct compound_hdr hdr = {
2685 .minorversion = clp->cl_mvops->minor_version,
2686 };
2687
2688 encode_compound_hdr(xdr, req, &hdr);
2689 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2690 encode_nops(&hdr);
2691}
2692
2693/*
2694 * EXCHANGE_ID request
2695 */
2696static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2697 struct xdr_stream *xdr,
2698 struct nfs41_exchange_id_args *args)
2699{
2700 struct compound_hdr hdr = {
2701 .minorversion = args->client->cl_mvops->minor_version,
2702 };
2703
2704 encode_compound_hdr(xdr, req, &hdr);
2705 encode_exchange_id(xdr, args, &hdr);
2706 encode_nops(&hdr);
2707}
2708
2709/*
2710 * a CREATE_SESSION request
2711 */
2712static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2713 struct xdr_stream *xdr,
2714 struct nfs41_create_session_args *args)
2715{
2716 struct compound_hdr hdr = {
2717 .minorversion = args->client->cl_mvops->minor_version,
2718 };
2719
2720 encode_compound_hdr(xdr, req, &hdr);
2721 encode_create_session(xdr, args, &hdr);
2722 encode_nops(&hdr);
2723}
2724
2725/*
2726 * a DESTROY_SESSION request
2727 */
2728static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2729 struct xdr_stream *xdr,
2730 struct nfs4_session *session)
2731{
2732 struct compound_hdr hdr = {
2733 .minorversion = session->clp->cl_mvops->minor_version,
2734 };
2735
2736 encode_compound_hdr(xdr, req, &hdr);
2737 encode_destroy_session(xdr, session, &hdr);
2738 encode_nops(&hdr);
2739}
2740
2741/*
2742 * a DESTROY_CLIENTID request
2743 */
2744static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2745 struct xdr_stream *xdr,
2746 struct nfs_client *clp)
2747{
2748 struct compound_hdr hdr = {
2749 .minorversion = clp->cl_mvops->minor_version,
2750 };
2751
2752 encode_compound_hdr(xdr, req, &hdr);
2753 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2754 encode_nops(&hdr);
2755}
2756
2757/*
2758 * a SEQUENCE request
2759 */
2760static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2761 struct nfs4_sequence_args *args)
2762{
2763 struct compound_hdr hdr = {
2764 .minorversion = nfs4_xdr_minorversion(args),
2765 };
2766
2767 encode_compound_hdr(xdr, req, &hdr);
2768 encode_sequence(xdr, args, &hdr);
2769 encode_nops(&hdr);
2770}
2771
2772/*
2773 * a GET_LEASE_TIME request
2774 */
2775static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2776 struct xdr_stream *xdr,
2777 struct nfs4_get_lease_time_args *args)
2778{
2779 struct compound_hdr hdr = {
2780 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2781 };
2782 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2783
2784 encode_compound_hdr(xdr, req, &hdr);
2785 encode_sequence(xdr, &args->la_seq_args, &hdr);
2786 encode_putrootfh(xdr, &hdr);
2787 encode_fsinfo(xdr, lease_bitmap, &hdr);
2788 encode_nops(&hdr);
2789}
2790
2791/*
2792 * a RECLAIM_COMPLETE request
2793 */
2794static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2795 struct xdr_stream *xdr,
2796 struct nfs41_reclaim_complete_args *args)
2797{
2798 struct compound_hdr hdr = {
2799 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2800 };
2801
2802 encode_compound_hdr(xdr, req, &hdr);
2803 encode_sequence(xdr, &args->seq_args, &hdr);
2804 encode_reclaim_complete(xdr, args, &hdr);
2805 encode_nops(&hdr);
2806}
2807
2808/*
2809 * Encode GETDEVICELIST request
2810 */
2811static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2812 struct xdr_stream *xdr,
2813 struct nfs4_getdevicelist_args *args)
2814{
2815 struct compound_hdr hdr = {
2816 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2817 };
2818
2819 encode_compound_hdr(xdr, req, &hdr);
2820 encode_sequence(xdr, &args->seq_args, &hdr);
2821 encode_putfh(xdr, args->fh, &hdr);
2822 encode_getdevicelist(xdr, args, &hdr);
2823 encode_nops(&hdr);
2824}
2825
2826/*
2827 * Encode GETDEVICEINFO request
2828 */
2829static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2830 struct xdr_stream *xdr,
2831 struct nfs4_getdeviceinfo_args *args)
2832{
2833 struct compound_hdr hdr = {
2834 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2835 };
2836
2837 encode_compound_hdr(xdr, req, &hdr);
2838 encode_sequence(xdr, &args->seq_args, &hdr);
2839 encode_getdeviceinfo(xdr, args, &hdr);
2840
2841 /* set up reply kvec. Subtract notification bitmap max size (2)
2842 * so that notification bitmap is put in xdr_buf tail */
2843 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2844 args->pdev->pages, args->pdev->pgbase,
2845 args->pdev->pglen);
2846
2847 encode_nops(&hdr);
2848}
2849
2850/*
2851 * Encode LAYOUTGET request
2852 */
2853static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2854 struct xdr_stream *xdr,
2855 struct nfs4_layoutget_args *args)
2856{
2857 struct compound_hdr hdr = {
2858 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2859 };
2860
2861 encode_compound_hdr(xdr, req, &hdr);
2862 encode_sequence(xdr, &args->seq_args, &hdr);
2863 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2864 encode_layoutget(xdr, args, &hdr);
2865
2866 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2867 args->layout.pages, 0, args->layout.pglen);
2868
2869 encode_nops(&hdr);
2870}
2871
2872/*
2873 * Encode LAYOUTCOMMIT request
2874 */
2875static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2876 struct xdr_stream *xdr,
2877 struct nfs4_layoutcommit_args *args)
2878{
2879 struct nfs4_layoutcommit_data *data =
2880 container_of(args, struct nfs4_layoutcommit_data, args);
2881 struct compound_hdr hdr = {
2882 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2883 };
2884
2885 encode_compound_hdr(xdr, req, &hdr);
2886 encode_sequence(xdr, &args->seq_args, &hdr);
2887 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2888 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2889 encode_getfattr(xdr, args->bitmask, &hdr);
2890 encode_nops(&hdr);
2891}
2892
2893/*
2894 * Encode LAYOUTRETURN request
2895 */
2896static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2897 struct xdr_stream *xdr,
2898 struct nfs4_layoutreturn_args *args)
2899{
2900 struct compound_hdr hdr = {
2901 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2902 };
2903
2904 encode_compound_hdr(xdr, req, &hdr);
2905 encode_sequence(xdr, &args->seq_args, &hdr);
2906 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2907 encode_layoutreturn(xdr, args, &hdr);
2908 encode_nops(&hdr);
2909}
2910
2911/*
2912 * Encode SECINFO_NO_NAME request
2913 */
2914static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2915 struct xdr_stream *xdr,
2916 struct nfs41_secinfo_no_name_args *args)
2917{
2918 struct compound_hdr hdr = {
2919 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2920 };
2921
2922 encode_compound_hdr(xdr, req, &hdr);
2923 encode_sequence(xdr, &args->seq_args, &hdr);
2924 encode_putrootfh(xdr, &hdr);
2925 encode_secinfo_no_name(xdr, args, &hdr);
2926 encode_nops(&hdr);
2927 return 0;
2928}
2929
2930/*
2931 * Encode TEST_STATEID request
2932 */
2933static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2934 struct xdr_stream *xdr,
2935 struct nfs41_test_stateid_args *args)
2936{
2937 struct compound_hdr hdr = {
2938 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2939 };
2940
2941 encode_compound_hdr(xdr, req, &hdr);
2942 encode_sequence(xdr, &args->seq_args, &hdr);
2943 encode_test_stateid(xdr, args, &hdr);
2944 encode_nops(&hdr);
2945}
2946
2947/*
2948 * Encode FREE_STATEID request
2949 */
2950static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2951 struct xdr_stream *xdr,
2952 struct nfs41_free_stateid_args *args)
2953{
2954 struct compound_hdr hdr = {
2955 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2956 };
2957
2958 encode_compound_hdr(xdr, req, &hdr);
2959 encode_sequence(xdr, &args->seq_args, &hdr);
2960 encode_free_stateid(xdr, args, &hdr);
2961 encode_nops(&hdr);
2962}
2963#endif /* CONFIG_NFS_V4_1 */
2964
2965static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2966{
2967 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2968 "Remaining buffer length is %tu words.\n",
2969 func, xdr->end - xdr->p);
2970}
2971
2972static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2973{
2974 __be32 *p;
2975
2976 p = xdr_inline_decode(xdr, 4);
2977 if (unlikely(!p))
2978 goto out_overflow;
2979 *len = be32_to_cpup(p);
2980 p = xdr_inline_decode(xdr, *len);
2981 if (unlikely(!p))
2982 goto out_overflow;
2983 *string = (char *)p;
2984 return 0;
2985out_overflow:
2986 print_overflow_msg(__func__, xdr);
2987 return -EIO;
2988}
2989
2990static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2991{
2992 __be32 *p;
2993
2994 p = xdr_inline_decode(xdr, 8);
2995 if (unlikely(!p))
2996 goto out_overflow;
2997 hdr->status = be32_to_cpup(p++);
2998 hdr->taglen = be32_to_cpup(p);
2999
3000 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3001 if (unlikely(!p))
3002 goto out_overflow;
3003 hdr->tag = (char *)p;
3004 p += XDR_QUADLEN(hdr->taglen);
3005 hdr->nops = be32_to_cpup(p);
3006 if (unlikely(hdr->nops < 1))
3007 return nfs4_stat_to_errno(hdr->status);
3008 return 0;
3009out_overflow:
3010 print_overflow_msg(__func__, xdr);
3011 return -EIO;
3012}
3013
3014static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3015{
3016 __be32 *p;
3017 uint32_t opnum;
3018 int32_t nfserr;
3019
3020 p = xdr_inline_decode(xdr, 8);
3021 if (unlikely(!p))
3022 goto out_overflow;
3023 opnum = be32_to_cpup(p++);
3024 if (opnum != expected) {
3025 dprintk("nfs: Server returned operation"
3026 " %d but we issued a request for %d\n",
3027 opnum, expected);
3028 return -EIO;
3029 }
3030 nfserr = be32_to_cpup(p);
3031 if (nfserr != NFS_OK)
3032 return nfs4_stat_to_errno(nfserr);
3033 return 0;
3034out_overflow:
3035 print_overflow_msg(__func__, xdr);
3036 return -EIO;
3037}
3038
3039/* Dummy routine */
3040static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3041{
3042 __be32 *p;
3043 unsigned int strlen;
3044 char *str;
3045
3046 p = xdr_inline_decode(xdr, 12);
3047 if (likely(p))
3048 return decode_opaque_inline(xdr, &strlen, &str);
3049 print_overflow_msg(__func__, xdr);
3050 return -EIO;
3051}
3052
3053static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3054{
3055 uint32_t bmlen;
3056 __be32 *p;
3057
3058 p = xdr_inline_decode(xdr, 4);
3059 if (unlikely(!p))
3060 goto out_overflow;
3061 bmlen = be32_to_cpup(p);
3062
3063 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3064 p = xdr_inline_decode(xdr, (bmlen << 2));
3065 if (unlikely(!p))
3066 goto out_overflow;
3067 if (bmlen > 0) {
3068 bitmap[0] = be32_to_cpup(p++);
3069 if (bmlen > 1) {
3070 bitmap[1] = be32_to_cpup(p++);
3071 if (bmlen > 2)
3072 bitmap[2] = be32_to_cpup(p);
3073 }
3074 }
3075 return 0;
3076out_overflow:
3077 print_overflow_msg(__func__, xdr);
3078 return -EIO;
3079}
3080
3081static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
3082{
3083 __be32 *p;
3084
3085 p = xdr_inline_decode(xdr, 4);
3086 if (unlikely(!p))
3087 goto out_overflow;
3088 *attrlen = be32_to_cpup(p);
3089 *savep = xdr->p;
3090 return 0;
3091out_overflow:
3092 print_overflow_msg(__func__, xdr);
3093 return -EIO;
3094}
3095
3096static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3097{
3098 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3099 int ret;
3100 ret = decode_attr_bitmap(xdr, bitmask);
3101 if (unlikely(ret < 0))
3102 return ret;
3103 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3104 } else
3105 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3106 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3107 bitmask[0], bitmask[1], bitmask[2]);
3108 return 0;
3109}
3110
3111static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3112{
3113 __be32 *p;
3114 int ret = 0;
3115
3116 *type = 0;
3117 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3118 return -EIO;
3119 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3120 p = xdr_inline_decode(xdr, 4);
3121 if (unlikely(!p))
3122 goto out_overflow;
3123 *type = be32_to_cpup(p);
3124 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3125 dprintk("%s: bad type %d\n", __func__, *type);
3126 return -EIO;
3127 }
3128 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3129 ret = NFS_ATTR_FATTR_TYPE;
3130 }
3131 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3132 return ret;
3133out_overflow:
3134 print_overflow_msg(__func__, xdr);
3135 return -EIO;
3136}
3137
3138static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3139 uint32_t *bitmap, uint32_t *type)
3140{
3141 __be32 *p;
3142
3143 *type = 0;
3144 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3145 return -EIO;
3146 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3147 p = xdr_inline_decode(xdr, 4);
3148 if (unlikely(!p))
3149 goto out_overflow;
3150 *type = be32_to_cpup(p);
3151 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3152 }
3153 dprintk("%s: expire type=0x%x\n", __func__, *type);
3154 return 0;
3155out_overflow:
3156 print_overflow_msg(__func__, xdr);
3157 return -EIO;
3158}
3159
3160static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3161{
3162 __be32 *p;
3163 int ret = 0;
3164
3165 *change = 0;
3166 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3167 return -EIO;
3168 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3169 p = xdr_inline_decode(xdr, 8);
3170 if (unlikely(!p))
3171 goto out_overflow;
3172 xdr_decode_hyper(p, change);
3173 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3174 ret = NFS_ATTR_FATTR_CHANGE;
3175 }
3176 dprintk("%s: change attribute=%Lu\n", __func__,
3177 (unsigned long long)*change);
3178 return ret;
3179out_overflow:
3180 print_overflow_msg(__func__, xdr);
3181 return -EIO;
3182}
3183
3184static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3185{
3186 __be32 *p;
3187 int ret = 0;
3188
3189 *size = 0;
3190 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3191 return -EIO;
3192 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3193 p = xdr_inline_decode(xdr, 8);
3194 if (unlikely(!p))
3195 goto out_overflow;
3196 xdr_decode_hyper(p, size);
3197 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3198 ret = NFS_ATTR_FATTR_SIZE;
3199 }
3200 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3201 return ret;
3202out_overflow:
3203 print_overflow_msg(__func__, xdr);
3204 return -EIO;
3205}
3206
3207static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3208{
3209 __be32 *p;
3210
3211 *res = 0;
3212 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3213 return -EIO;
3214 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3215 p = xdr_inline_decode(xdr, 4);
3216 if (unlikely(!p))
3217 goto out_overflow;
3218 *res = be32_to_cpup(p);
3219 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3220 }
3221 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3222 return 0;
3223out_overflow:
3224 print_overflow_msg(__func__, xdr);
3225 return -EIO;
3226}
3227
3228static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3229{
3230 __be32 *p;
3231
3232 *res = 0;
3233 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3234 return -EIO;
3235 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3236 p = xdr_inline_decode(xdr, 4);
3237 if (unlikely(!p))
3238 goto out_overflow;
3239 *res = be32_to_cpup(p);
3240 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3241 }
3242 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3243 return 0;
3244out_overflow:
3245 print_overflow_msg(__func__, xdr);
3246 return -EIO;
3247}
3248
3249static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3250{
3251 __be32 *p;
3252 int ret = 0;
3253
3254 fsid->major = 0;
3255 fsid->minor = 0;
3256 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3257 return -EIO;
3258 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3259 p = xdr_inline_decode(xdr, 16);
3260 if (unlikely(!p))
3261 goto out_overflow;
3262 p = xdr_decode_hyper(p, &fsid->major);
3263 xdr_decode_hyper(p, &fsid->minor);
3264 bitmap[0] &= ~FATTR4_WORD0_FSID;
3265 ret = NFS_ATTR_FATTR_FSID;
3266 }
3267 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3268 (unsigned long long)fsid->major,
3269 (unsigned long long)fsid->minor);
3270 return ret;
3271out_overflow:
3272 print_overflow_msg(__func__, xdr);
3273 return -EIO;
3274}
3275
3276static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3277{
3278 __be32 *p;
3279
3280 *res = 60;
3281 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3282 return -EIO;
3283 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3284 p = xdr_inline_decode(xdr, 4);
3285 if (unlikely(!p))
3286 goto out_overflow;
3287 *res = be32_to_cpup(p);
3288 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3289 }
3290 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3291 return 0;
3292out_overflow:
3293 print_overflow_msg(__func__, xdr);
3294 return -EIO;
3295}
3296
3297static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3298{
3299 __be32 *p;
3300
3301 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3302 return -EIO;
3303 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3304 p = xdr_inline_decode(xdr, 4);
3305 if (unlikely(!p))
3306 goto out_overflow;
3307 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3308 *res = -be32_to_cpup(p);
3309 }
3310 return 0;
3311out_overflow:
3312 print_overflow_msg(__func__, xdr);
3313 return -EIO;
3314}
3315
3316static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3317{
3318 __be32 *p;
3319 int len;
3320
3321 if (fh != NULL)
3322 memset(fh, 0, sizeof(*fh));
3323
3324 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3325 return -EIO;
3326 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3327 p = xdr_inline_decode(xdr, 4);
3328 if (unlikely(!p))
3329 goto out_overflow;
3330 len = be32_to_cpup(p);
3331 if (len > NFS4_FHSIZE)
3332 return -EIO;
3333 p = xdr_inline_decode(xdr, len);
3334 if (unlikely(!p))
3335 goto out_overflow;
3336 if (fh != NULL) {
3337 memcpy(fh->data, p, len);
3338 fh->size = len;
3339 }
3340 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3341 }
3342 return 0;
3343out_overflow:
3344 print_overflow_msg(__func__, xdr);
3345 return -EIO;
3346}
3347
3348static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3349{
3350 __be32 *p;
3351
3352 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3353 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3354 return -EIO;
3355 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3356 p = xdr_inline_decode(xdr, 4);
3357 if (unlikely(!p))
3358 goto out_overflow;
3359 *res = be32_to_cpup(p);
3360 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3361 }
3362 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3363 return 0;
3364out_overflow:
3365 print_overflow_msg(__func__, xdr);
3366 return -EIO;
3367}
3368
3369static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3370{
3371 __be32 *p;
3372 int ret = 0;
3373
3374 *fileid = 0;
3375 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3376 return -EIO;
3377 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3378 p = xdr_inline_decode(xdr, 8);
3379 if (unlikely(!p))
3380 goto out_overflow;
3381 xdr_decode_hyper(p, fileid);
3382 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3383 ret = NFS_ATTR_FATTR_FILEID;
3384 }
3385 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3386 return ret;
3387out_overflow:
3388 print_overflow_msg(__func__, xdr);
3389 return -EIO;
3390}
3391
3392static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3393{
3394 __be32 *p;
3395 int ret = 0;
3396
3397 *fileid = 0;
3398 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3399 return -EIO;
3400 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3401 p = xdr_inline_decode(xdr, 8);
3402 if (unlikely(!p))
3403 goto out_overflow;
3404 xdr_decode_hyper(p, fileid);
3405 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3406 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3407 }
3408 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3409 return ret;
3410out_overflow:
3411 print_overflow_msg(__func__, xdr);
3412 return -EIO;
3413}
3414
3415static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3416{
3417 __be32 *p;
3418 int status = 0;
3419
3420 *res = 0;
3421 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3422 return -EIO;
3423 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3424 p = xdr_inline_decode(xdr, 8);
3425 if (unlikely(!p))
3426 goto out_overflow;
3427 xdr_decode_hyper(p, res);
3428 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3429 }
3430 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3431 return status;
3432out_overflow:
3433 print_overflow_msg(__func__, xdr);
3434 return -EIO;
3435}
3436
3437static int decode_attr_files_free(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_FREE - 1U)))
3444 return -EIO;
3445 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
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_FREE;
3451 }
3452 dprintk("%s: files free=%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_total(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_TOTAL - 1U)))
3466 return -EIO;
3467 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
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_TOTAL;
3473 }
3474 dprintk("%s: files total=%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_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3482{
3483 u32 n;
3484 __be32 *p;
3485 int status = 0;
3486
3487 p = xdr_inline_decode(xdr, 4);
3488 if (unlikely(!p))
3489 goto out_overflow;
3490 n = be32_to_cpup(p);
3491 if (n == 0)
3492 goto root_path;
3493 dprintk("pathname4: ");
3494 path->ncomponents = 0;
3495 while (path->ncomponents < n) {
3496 struct nfs4_string *component = &path->components[path->ncomponents];
3497 status = decode_opaque_inline(xdr, &component->len, &component->data);
3498 if (unlikely(status != 0))
3499 goto out_eio;
3500 ifdebug (XDR)
3501 pr_cont("%s%.*s ",
3502 (path->ncomponents != n ? "/ " : ""),
3503 component->len, component->data);
3504 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3505 path->ncomponents++;
3506 else {
3507 dprintk("cannot parse %d components in path\n", n);
3508 goto out_eio;
3509 }
3510 }
3511out:
3512 return status;
3513root_path:
3514/* a root pathname is sent as a zero component4 */
3515 path->ncomponents = 1;
3516 path->components[0].len=0;
3517 path->components[0].data=NULL;
3518 dprintk("pathname4: /\n");
3519 goto out;
3520out_eio:
3521 dprintk(" status %d", status);
3522 status = -EIO;
3523 goto out;
3524out_overflow:
3525 print_overflow_msg(__func__, xdr);
3526 return -EIO;
3527}
3528
3529static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3530{
3531 int n;
3532 __be32 *p;
3533 int status = -EIO;
3534
3535 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3536 goto out;
3537 status = 0;
3538 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3539 goto out;
3540 status = -EIO;
3541 /* Ignore borken servers that return unrequested attrs */
3542 if (unlikely(res == NULL))
3543 goto out;
3544 dprintk("%s: fsroot:\n", __func__);
3545 status = decode_pathname(xdr, &res->fs_path);
3546 if (unlikely(status != 0))
3547 goto out;
3548 p = xdr_inline_decode(xdr, 4);
3549 if (unlikely(!p))
3550 goto out_overflow;
3551 n = be32_to_cpup(p);
3552 if (n <= 0)
3553 goto out_eio;
3554 res->nlocations = 0;
3555 while (res->nlocations < n) {
3556 u32 m;
3557 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3558
3559 p = xdr_inline_decode(xdr, 4);
3560 if (unlikely(!p))
3561 goto out_overflow;
3562 m = be32_to_cpup(p);
3563
3564 loc->nservers = 0;
3565 dprintk("%s: servers:\n", __func__);
3566 while (loc->nservers < m) {
3567 struct nfs4_string *server = &loc->servers[loc->nservers];
3568 status = decode_opaque_inline(xdr, &server->len, &server->data);
3569 if (unlikely(status != 0))
3570 goto out_eio;
3571 dprintk("%s ", server->data);
3572 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3573 loc->nservers++;
3574 else {
3575 unsigned int i;
3576 dprintk("%s: using first %u of %u servers "
3577 "returned for location %u\n",
3578 __func__,
3579 NFS4_FS_LOCATION_MAXSERVERS,
3580 m, res->nlocations);
3581 for (i = loc->nservers; i < m; i++) {
3582 unsigned int len;
3583 char *data;
3584 status = decode_opaque_inline(xdr, &len, &data);
3585 if (unlikely(status != 0))
3586 goto out_eio;
3587 }
3588 }
3589 }
3590 status = decode_pathname(xdr, &loc->rootpath);
3591 if (unlikely(status != 0))
3592 goto out_eio;
3593 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3594 res->nlocations++;
3595 }
3596 if (res->nlocations != 0)
3597 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3598out:
3599 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3600 return status;
3601out_overflow:
3602 print_overflow_msg(__func__, xdr);
3603out_eio:
3604 status = -EIO;
3605 goto out;
3606}
3607
3608static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3609{
3610 __be32 *p;
3611 int status = 0;
3612
3613 *res = 0;
3614 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3615 return -EIO;
3616 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3617 p = xdr_inline_decode(xdr, 8);
3618 if (unlikely(!p))
3619 goto out_overflow;
3620 xdr_decode_hyper(p, res);
3621 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3622 }
3623 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3624 return status;
3625out_overflow:
3626 print_overflow_msg(__func__, xdr);
3627 return -EIO;
3628}
3629
3630static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3631{
3632 __be32 *p;
3633 int status = 0;
3634
3635 *maxlink = 1;
3636 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3637 return -EIO;
3638 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3639 p = xdr_inline_decode(xdr, 4);
3640 if (unlikely(!p))
3641 goto out_overflow;
3642 *maxlink = be32_to_cpup(p);
3643 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3644 }
3645 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3646 return status;
3647out_overflow:
3648 print_overflow_msg(__func__, xdr);
3649 return -EIO;
3650}
3651
3652static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3653{
3654 __be32 *p;
3655 int status = 0;
3656
3657 *maxname = 1024;
3658 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3659 return -EIO;
3660 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3661 p = xdr_inline_decode(xdr, 4);
3662 if (unlikely(!p))
3663 goto out_overflow;
3664 *maxname = be32_to_cpup(p);
3665 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3666 }
3667 dprintk("%s: maxname=%u\n", __func__, *maxname);
3668 return status;
3669out_overflow:
3670 print_overflow_msg(__func__, xdr);
3671 return -EIO;
3672}
3673
3674static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3675{
3676 __be32 *p;
3677 int status = 0;
3678
3679 *res = 1024;
3680 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3681 return -EIO;
3682 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3683 uint64_t maxread;
3684 p = xdr_inline_decode(xdr, 8);
3685 if (unlikely(!p))
3686 goto out_overflow;
3687 xdr_decode_hyper(p, &maxread);
3688 if (maxread > 0x7FFFFFFF)
3689 maxread = 0x7FFFFFFF;
3690 *res = (uint32_t)maxread;
3691 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3692 }
3693 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3694 return status;
3695out_overflow:
3696 print_overflow_msg(__func__, xdr);
3697 return -EIO;
3698}
3699
3700static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3701{
3702 __be32 *p;
3703 int status = 0;
3704
3705 *res = 1024;
3706 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3707 return -EIO;
3708 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3709 uint64_t maxwrite;
3710 p = xdr_inline_decode(xdr, 8);
3711 if (unlikely(!p))
3712 goto out_overflow;
3713 xdr_decode_hyper(p, &maxwrite);
3714 if (maxwrite > 0x7FFFFFFF)
3715 maxwrite = 0x7FFFFFFF;
3716 *res = (uint32_t)maxwrite;
3717 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3718 }
3719 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3720 return status;
3721out_overflow:
3722 print_overflow_msg(__func__, xdr);
3723 return -EIO;
3724}
3725
3726static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3727{
3728 uint32_t tmp;
3729 __be32 *p;
3730 int ret = 0;
3731
3732 *mode = 0;
3733 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3734 return -EIO;
3735 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3736 p = xdr_inline_decode(xdr, 4);
3737 if (unlikely(!p))
3738 goto out_overflow;
3739 tmp = be32_to_cpup(p);
3740 *mode = tmp & ~S_IFMT;
3741 bitmap[1] &= ~FATTR4_WORD1_MODE;
3742 ret = NFS_ATTR_FATTR_MODE;
3743 }
3744 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3745 return ret;
3746out_overflow:
3747 print_overflow_msg(__func__, xdr);
3748 return -EIO;
3749}
3750
3751static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3752{
3753 __be32 *p;
3754 int ret = 0;
3755
3756 *nlink = 1;
3757 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3758 return -EIO;
3759 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3760 p = xdr_inline_decode(xdr, 4);
3761 if (unlikely(!p))
3762 goto out_overflow;
3763 *nlink = be32_to_cpup(p);
3764 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3765 ret = NFS_ATTR_FATTR_NLINK;
3766 }
3767 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3768 return ret;
3769out_overflow:
3770 print_overflow_msg(__func__, xdr);
3771 return -EIO;
3772}
3773
3774static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3775 const struct nfs_server *server, uint32_t *uid,
3776 struct nfs4_string *owner_name)
3777{
3778 uint32_t len;
3779 __be32 *p;
3780 int ret = 0;
3781
3782 *uid = -2;
3783 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3784 return -EIO;
3785 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3786 p = xdr_inline_decode(xdr, 4);
3787 if (unlikely(!p))
3788 goto out_overflow;
3789 len = be32_to_cpup(p);
3790 p = xdr_inline_decode(xdr, len);
3791 if (unlikely(!p))
3792 goto out_overflow;
3793 if (owner_name != NULL) {
3794 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3795 if (owner_name->data != NULL) {
3796 owner_name->len = len;
3797 ret = NFS_ATTR_FATTR_OWNER_NAME;
3798 }
3799 } else if (len < XDR_MAX_NETOBJ) {
3800 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3801 ret = NFS_ATTR_FATTR_OWNER;
3802 else
3803 dprintk("%s: nfs_map_name_to_uid failed!\n",
3804 __func__);
3805 } else
3806 dprintk("%s: name too long (%u)!\n",
3807 __func__, len);
3808 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3809 }
3810 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3811 return ret;
3812out_overflow:
3813 print_overflow_msg(__func__, xdr);
3814 return -EIO;
3815}
3816
3817static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3818 const struct nfs_server *server, uint32_t *gid,
3819 struct nfs4_string *group_name)
3820{
3821 uint32_t len;
3822 __be32 *p;
3823 int ret = 0;
3824
3825 *gid = -2;
3826 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3827 return -EIO;
3828 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3829 p = xdr_inline_decode(xdr, 4);
3830 if (unlikely(!p))
3831 goto out_overflow;
3832 len = be32_to_cpup(p);
3833 p = xdr_inline_decode(xdr, len);
3834 if (unlikely(!p))
3835 goto out_overflow;
3836 if (group_name != NULL) {
3837 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3838 if (group_name->data != NULL) {
3839 group_name->len = len;
3840 ret = NFS_ATTR_FATTR_GROUP_NAME;
3841 }
3842 } else if (len < XDR_MAX_NETOBJ) {
3843 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3844 ret = NFS_ATTR_FATTR_GROUP;
3845 else
3846 dprintk("%s: nfs_map_group_to_gid failed!\n",
3847 __func__);
3848 } else
3849 dprintk("%s: name too long (%u)!\n",
3850 __func__, len);
3851 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3852 }
3853 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3854 return ret;
3855out_overflow:
3856 print_overflow_msg(__func__, xdr);
3857 return -EIO;
3858}
3859
3860static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3861{
3862 uint32_t major = 0, minor = 0;
3863 __be32 *p;
3864 int ret = 0;
3865
3866 *rdev = MKDEV(0,0);
3867 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3868 return -EIO;
3869 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3870 dev_t tmp;
3871
3872 p = xdr_inline_decode(xdr, 8);
3873 if (unlikely(!p))
3874 goto out_overflow;
3875 major = be32_to_cpup(p++);
3876 minor = be32_to_cpup(p);
3877 tmp = MKDEV(major, minor);
3878 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3879 *rdev = tmp;
3880 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3881 ret = NFS_ATTR_FATTR_RDEV;
3882 }
3883 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3884 return ret;
3885out_overflow:
3886 print_overflow_msg(__func__, xdr);
3887 return -EIO;
3888}
3889
3890static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3891{
3892 __be32 *p;
3893 int status = 0;
3894
3895 *res = 0;
3896 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3897 return -EIO;
3898 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3899 p = xdr_inline_decode(xdr, 8);
3900 if (unlikely(!p))
3901 goto out_overflow;
3902 xdr_decode_hyper(p, res);
3903 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3904 }
3905 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3906 return status;
3907out_overflow:
3908 print_overflow_msg(__func__, xdr);
3909 return -EIO;
3910}
3911
3912static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3913{
3914 __be32 *p;
3915 int status = 0;
3916
3917 *res = 0;
3918 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3919 return -EIO;
3920 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3921 p = xdr_inline_decode(xdr, 8);
3922 if (unlikely(!p))
3923 goto out_overflow;
3924 xdr_decode_hyper(p, res);
3925 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3926 }
3927 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3928 return status;
3929out_overflow:
3930 print_overflow_msg(__func__, xdr);
3931 return -EIO;
3932}
3933
3934static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3935{
3936 __be32 *p;
3937 int status = 0;
3938
3939 *res = 0;
3940 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3941 return -EIO;
3942 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3943 p = xdr_inline_decode(xdr, 8);
3944 if (unlikely(!p))
3945 goto out_overflow;
3946 xdr_decode_hyper(p, res);
3947 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3948 }
3949 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3950 return status;
3951out_overflow:
3952 print_overflow_msg(__func__, xdr);
3953 return -EIO;
3954}
3955
3956static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3957{
3958 __be32 *p;
3959 int ret = 0;
3960
3961 *used = 0;
3962 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3963 return -EIO;
3964 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3965 p = xdr_inline_decode(xdr, 8);
3966 if (unlikely(!p))
3967 goto out_overflow;
3968 xdr_decode_hyper(p, used);
3969 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3970 ret = NFS_ATTR_FATTR_SPACE_USED;
3971 }
3972 dprintk("%s: space used=%Lu\n", __func__,
3973 (unsigned long long)*used);
3974 return ret;
3975out_overflow:
3976 print_overflow_msg(__func__, xdr);
3977 return -EIO;
3978}
3979
3980static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3981{
3982 __be32 *p;
3983 uint64_t sec;
3984 uint32_t nsec;
3985
3986 p = xdr_inline_decode(xdr, 12);
3987 if (unlikely(!p))
3988 goto out_overflow;
3989 p = xdr_decode_hyper(p, &sec);
3990 nsec = be32_to_cpup(p);
3991 time->tv_sec = (time_t)sec;
3992 time->tv_nsec = (long)nsec;
3993 return 0;
3994out_overflow:
3995 print_overflow_msg(__func__, xdr);
3996 return -EIO;
3997}
3998
3999static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4000{
4001 int status = 0;
4002
4003 time->tv_sec = 0;
4004 time->tv_nsec = 0;
4005 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4006 return -EIO;
4007 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4008 status = decode_attr_time(xdr, time);
4009 if (status == 0)
4010 status = NFS_ATTR_FATTR_ATIME;
4011 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4012 }
4013 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4014 return status;
4015}
4016
4017static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4018{
4019 int status = 0;
4020
4021 time->tv_sec = 0;
4022 time->tv_nsec = 0;
4023 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4024 return -EIO;
4025 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4026 status = decode_attr_time(xdr, time);
4027 if (status == 0)
4028 status = NFS_ATTR_FATTR_CTIME;
4029 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4030 }
4031 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4032 return status;
4033}
4034
4035static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4036 struct timespec *time)
4037{
4038 int status = 0;
4039
4040 time->tv_sec = 0;
4041 time->tv_nsec = 0;
4042 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4043 return -EIO;
4044 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4045 status = decode_attr_time(xdr, time);
4046 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4047 }
4048 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4049 (long)time->tv_nsec);
4050 return status;
4051}
4052
4053static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4054{
4055 int status = 0;
4056
4057 time->tv_sec = 0;
4058 time->tv_nsec = 0;
4059 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4060 return -EIO;
4061 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4062 status = decode_attr_time(xdr, time);
4063 if (status == 0)
4064 status = NFS_ATTR_FATTR_MTIME;
4065 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4066 }
4067 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4068 return status;
4069}
4070
4071static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
4072{
4073 unsigned int attrwords = XDR_QUADLEN(attrlen);
4074 unsigned int nwords = xdr->p - savep;
4075
4076 if (unlikely(attrwords != nwords)) {
4077 dprintk("%s: server returned incorrect attribute length: "
4078 "%u %c %u\n",
4079 __func__,
4080 attrwords << 2,
4081 (attrwords < nwords) ? '<' : '>',
4082 nwords << 2);
4083 return -EIO;
4084 }
4085 return 0;
4086}
4087
4088static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4089{
4090 __be32 *p;
4091
4092 p = xdr_inline_decode(xdr, 20);
4093 if (unlikely(!p))
4094 goto out_overflow;
4095 cinfo->atomic = be32_to_cpup(p++);
4096 p = xdr_decode_hyper(p, &cinfo->before);
4097 xdr_decode_hyper(p, &cinfo->after);
4098 return 0;
4099out_overflow:
4100 print_overflow_msg(__func__, xdr);
4101 return -EIO;
4102}
4103
4104static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
4105{
4106 __be32 *p;
4107 uint32_t supp, acc;
4108 int status;
4109
4110 status = decode_op_hdr(xdr, OP_ACCESS);
4111 if (status)
4112 return status;
4113 p = xdr_inline_decode(xdr, 8);
4114 if (unlikely(!p))
4115 goto out_overflow;
4116 supp = be32_to_cpup(p++);
4117 acc = be32_to_cpup(p);
4118 access->supported = supp;
4119 access->access = acc;
4120 return 0;
4121out_overflow:
4122 print_overflow_msg(__func__, xdr);
4123 return -EIO;
4124}
4125
4126static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4127{
4128 __be32 *p;
4129
4130 p = xdr_inline_decode(xdr, len);
4131 if (likely(p)) {
4132 memcpy(buf, p, len);
4133 return 0;
4134 }
4135 print_overflow_msg(__func__, xdr);
4136 return -EIO;
4137}
4138
4139static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4140{
4141 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4142}
4143
4144static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4145{
4146 int status;
4147
4148 status = decode_op_hdr(xdr, OP_CLOSE);
4149 if (status != -EIO)
4150 nfs_increment_open_seqid(status, res->seqid);
4151 if (!status)
4152 status = decode_stateid(xdr, &res->stateid);
4153 return status;
4154}
4155
4156static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4157{
4158 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4159}
4160
4161static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4162{
4163 int status;
4164
4165 status = decode_op_hdr(xdr, OP_COMMIT);
4166 if (!status)
4167 status = decode_verifier(xdr, res->verf->verifier);
4168 return status;
4169}
4170
4171static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4172{
4173 __be32 *p;
4174 uint32_t bmlen;
4175 int status;
4176
4177 status = decode_op_hdr(xdr, OP_CREATE);
4178 if (status)
4179 return status;
4180 if ((status = decode_change_info(xdr, cinfo)))
4181 return status;
4182 p = xdr_inline_decode(xdr, 4);
4183 if (unlikely(!p))
4184 goto out_overflow;
4185 bmlen = be32_to_cpup(p);
4186 p = xdr_inline_decode(xdr, bmlen << 2);
4187 if (likely(p))
4188 return 0;
4189out_overflow:
4190 print_overflow_msg(__func__, xdr);
4191 return -EIO;
4192}
4193
4194static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4195{
4196 __be32 *savep;
4197 uint32_t attrlen, bitmap[3] = {0};
4198 int status;
4199
4200 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4201 goto xdr_error;
4202 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4203 goto xdr_error;
4204 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4205 goto xdr_error;
4206 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4207 goto xdr_error;
4208 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4209 &res->fh_expire_type)) != 0)
4210 goto xdr_error;
4211 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4212 goto xdr_error;
4213 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4214 goto xdr_error;
4215 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4216 goto xdr_error;
4217 status = verify_attr_len(xdr, savep, attrlen);
4218xdr_error:
4219 dprintk("%s: xdr returned %d!\n", __func__, -status);
4220 return status;
4221}
4222
4223static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4224{
4225 __be32 *savep;
4226 uint32_t attrlen, bitmap[3] = {0};
4227 int status;
4228
4229 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4230 goto xdr_error;
4231 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4232 goto xdr_error;
4233 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4234 goto xdr_error;
4235
4236 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4237 goto xdr_error;
4238 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4239 goto xdr_error;
4240 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4241 goto xdr_error;
4242 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4243 goto xdr_error;
4244 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4245 goto xdr_error;
4246 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4247 goto xdr_error;
4248
4249 status = verify_attr_len(xdr, savep, attrlen);
4250xdr_error:
4251 dprintk("%s: xdr returned %d!\n", __func__, -status);
4252 return status;
4253}
4254
4255static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4256{
4257 __be32 *savep;
4258 uint32_t attrlen, bitmap[3] = {0};
4259 int status;
4260
4261 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4262 goto xdr_error;
4263 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4264 goto xdr_error;
4265 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4266 goto xdr_error;
4267
4268 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4269 goto xdr_error;
4270 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4271 goto xdr_error;
4272
4273 status = verify_attr_len(xdr, savep, attrlen);
4274xdr_error:
4275 dprintk("%s: xdr returned %d!\n", __func__, -status);
4276 return status;
4277}
4278
4279static int decode_threshold_hint(struct xdr_stream *xdr,
4280 uint32_t *bitmap,
4281 uint64_t *res,
4282 uint32_t hint_bit)
4283{
4284 __be32 *p;
4285
4286 *res = 0;
4287 if (likely(bitmap[0] & hint_bit)) {
4288 p = xdr_inline_decode(xdr, 8);
4289 if (unlikely(!p))
4290 goto out_overflow;
4291 xdr_decode_hyper(p, res);
4292 }
4293 return 0;
4294out_overflow:
4295 print_overflow_msg(__func__, xdr);
4296 return -EIO;
4297}
4298
4299static int decode_first_threshold_item4(struct xdr_stream *xdr,
4300 struct nfs4_threshold *res)
4301{
4302 __be32 *p, *savep;
4303 uint32_t bitmap[3] = {0,}, attrlen;
4304 int status;
4305
4306 /* layout type */
4307 p = xdr_inline_decode(xdr, 4);
4308 if (unlikely(!p)) {
4309 print_overflow_msg(__func__, xdr);
4310 return -EIO;
4311 }
4312 res->l_type = be32_to_cpup(p);
4313
4314 /* thi_hintset bitmap */
4315 status = decode_attr_bitmap(xdr, bitmap);
4316 if (status < 0)
4317 goto xdr_error;
4318
4319 /* thi_hintlist length */
4320 status = decode_attr_length(xdr, &attrlen, &savep);
4321 if (status < 0)
4322 goto xdr_error;
4323 /* thi_hintlist */
4324 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4325 if (status < 0)
4326 goto xdr_error;
4327 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4328 if (status < 0)
4329 goto xdr_error;
4330 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4331 THRESHOLD_RD_IO);
4332 if (status < 0)
4333 goto xdr_error;
4334 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4335 THRESHOLD_WR_IO);
4336 if (status < 0)
4337 goto xdr_error;
4338
4339 status = verify_attr_len(xdr, savep, attrlen);
4340 res->bm = bitmap[0];
4341
4342 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4343 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4344 res->wr_io_sz);
4345xdr_error:
4346 dprintk("%s ret=%d!\n", __func__, status);
4347 return status;
4348}
4349
4350/*
4351 * Thresholds on pNFS direct I/O vrs MDS I/O
4352 */
4353static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4354 uint32_t *bitmap,
4355 struct nfs4_threshold *res)
4356{
4357 __be32 *p;
4358 int status = 0;
4359 uint32_t num;
4360
4361 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4362 return -EIO;
4363 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4364 /* Did the server return an unrequested attribute? */
4365 if (unlikely(res == NULL))
4366 return -EREMOTEIO;
4367 p = xdr_inline_decode(xdr, 4);
4368 if (unlikely(!p))
4369 goto out_overflow;
4370 num = be32_to_cpup(p);
4371 if (num == 0)
4372 return 0;
4373 if (num > 1)
4374 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4375 "drivers per filesystem not supported\n",
4376 __func__);
4377
4378 status = decode_first_threshold_item4(xdr, res);
4379 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4380 }
4381 return status;
4382out_overflow:
4383 print_overflow_msg(__func__, xdr);
4384 return -EIO;
4385}
4386
4387static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4388 struct nfs_fattr *fattr, struct nfs_fh *fh,
4389 struct nfs4_fs_locations *fs_loc,
4390 const struct nfs_server *server)
4391{
4392 int status;
4393 umode_t fmode = 0;
4394 uint32_t type;
4395 int32_t err;
4396
4397 status = decode_attr_type(xdr, bitmap, &type);
4398 if (status < 0)
4399 goto xdr_error;
4400 fattr->mode = 0;
4401 if (status != 0) {
4402 fattr->mode |= nfs_type2fmt[type];
4403 fattr->valid |= status;
4404 }
4405
4406 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4407 if (status < 0)
4408 goto xdr_error;
4409 fattr->valid |= status;
4410
4411 status = decode_attr_size(xdr, bitmap, &fattr->size);
4412 if (status < 0)
4413 goto xdr_error;
4414 fattr->valid |= status;
4415
4416 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4417 if (status < 0)
4418 goto xdr_error;
4419 fattr->valid |= status;
4420
4421 err = 0;
4422 status = decode_attr_error(xdr, bitmap, &err);
4423 if (status < 0)
4424 goto xdr_error;
4425
4426 status = decode_attr_filehandle(xdr, bitmap, fh);
4427 if (status < 0)
4428 goto xdr_error;
4429
4430 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4431 if (status < 0)
4432 goto xdr_error;
4433 fattr->valid |= status;
4434
4435 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4436 if (status < 0)
4437 goto xdr_error;
4438 fattr->valid |= status;
4439
4440 status = decode_attr_mode(xdr, bitmap, &fmode);
4441 if (status < 0)
4442 goto xdr_error;
4443 if (status != 0) {
4444 fattr->mode |= fmode;
4445 fattr->valid |= status;
4446 }
4447
4448 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4449 if (status < 0)
4450 goto xdr_error;
4451 fattr->valid |= status;
4452
4453 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4454 if (status < 0)
4455 goto xdr_error;
4456 fattr->valid |= status;
4457
4458 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4459 if (status < 0)
4460 goto xdr_error;
4461 fattr->valid |= status;
4462
4463 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4464 if (status < 0)
4465 goto xdr_error;
4466 fattr->valid |= status;
4467
4468 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4469 if (status < 0)
4470 goto xdr_error;
4471 fattr->valid |= status;
4472
4473 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4474 if (status < 0)
4475 goto xdr_error;
4476 fattr->valid |= status;
4477
4478 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4479 if (status < 0)
4480 goto xdr_error;
4481 fattr->valid |= status;
4482
4483 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4484 if (status < 0)
4485 goto xdr_error;
4486 fattr->valid |= status;
4487
4488 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4489 if (status < 0)
4490 goto xdr_error;
4491 fattr->valid |= status;
4492
4493 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4494 if (status < 0)
4495 goto xdr_error;
4496
4497xdr_error:
4498 dprintk("%s: xdr returned %d\n", __func__, -status);
4499 return status;
4500}
4501
4502static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4503 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4504 const struct nfs_server *server)
4505{
4506 __be32 *savep;
4507 uint32_t attrlen,
4508 bitmap[3] = {0};
4509 int status;
4510
4511 status = decode_op_hdr(xdr, OP_GETATTR);
4512 if (status < 0)
4513 goto xdr_error;
4514
4515 status = decode_attr_bitmap(xdr, bitmap);
4516 if (status < 0)
4517 goto xdr_error;
4518
4519 status = decode_attr_length(xdr, &attrlen, &savep);
4520 if (status < 0)
4521 goto xdr_error;
4522
4523 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4524 if (status < 0)
4525 goto xdr_error;
4526
4527 status = verify_attr_len(xdr, savep, attrlen);
4528xdr_error:
4529 dprintk("%s: xdr returned %d\n", __func__, -status);
4530 return status;
4531}
4532
4533static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4534 const struct nfs_server *server)
4535{
4536 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4537}
4538
4539/*
4540 * Decode potentially multiple layout types. Currently we only support
4541 * one layout driver per file system.
4542 */
4543static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4544 uint32_t *layouttype)
4545{
4546 uint32_t *p;
4547 int num;
4548
4549 p = xdr_inline_decode(xdr, 4);
4550 if (unlikely(!p))
4551 goto out_overflow;
4552 num = be32_to_cpup(p);
4553
4554 /* pNFS is not supported by the underlying file system */
4555 if (num == 0) {
4556 *layouttype = 0;
4557 return 0;
4558 }
4559 if (num > 1)
4560 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4561 "drivers per filesystem not supported\n", __func__);
4562
4563 /* Decode and set first layout type, move xdr->p past unused types */
4564 p = xdr_inline_decode(xdr, num * 4);
4565 if (unlikely(!p))
4566 goto out_overflow;
4567 *layouttype = be32_to_cpup(p);
4568 return 0;
4569out_overflow:
4570 print_overflow_msg(__func__, xdr);
4571 return -EIO;
4572}
4573
4574/*
4575 * The type of file system exported.
4576 * Note we must ensure that layouttype is set in any non-error case.
4577 */
4578static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4579 uint32_t *layouttype)
4580{
4581 int status = 0;
4582
4583 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4584 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4585 return -EIO;
4586 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4587 status = decode_first_pnfs_layout_type(xdr, layouttype);
4588 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4589 } else
4590 *layouttype = 0;
4591 return status;
4592}
4593
4594/*
4595 * The prefered block size for layout directed io
4596 */
4597static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4598 uint32_t *res)
4599{
4600 __be32 *p;
4601
4602 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4603 *res = 0;
4604 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4605 p = xdr_inline_decode(xdr, 4);
4606 if (unlikely(!p)) {
4607 print_overflow_msg(__func__, xdr);
4608 return -EIO;
4609 }
4610 *res = be32_to_cpup(p);
4611 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4612 }
4613 return 0;
4614}
4615
4616static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4617{
4618 __be32 *savep;
4619 uint32_t attrlen, bitmap[3];
4620 int status;
4621
4622 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4623 goto xdr_error;
4624 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4625 goto xdr_error;
4626 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4627 goto xdr_error;
4628
4629 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4630
4631 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4632 goto xdr_error;
4633 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4634 goto xdr_error;
4635 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4636 goto xdr_error;
4637 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4638 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4639 goto xdr_error;
4640 fsinfo->wtpref = fsinfo->wtmax;
4641 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4642 if (status != 0)
4643 goto xdr_error;
4644 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4645 if (status != 0)
4646 goto xdr_error;
4647 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4648 if (status)
4649 goto xdr_error;
4650
4651 status = verify_attr_len(xdr, savep, attrlen);
4652xdr_error:
4653 dprintk("%s: xdr returned %d!\n", __func__, -status);
4654 return status;
4655}
4656
4657static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4658{
4659 __be32 *p;
4660 uint32_t len;
4661 int status;
4662
4663 /* Zero handle first to allow comparisons */
4664 memset(fh, 0, sizeof(*fh));
4665
4666 status = decode_op_hdr(xdr, OP_GETFH);
4667 if (status)
4668 return status;
4669
4670 p = xdr_inline_decode(xdr, 4);
4671 if (unlikely(!p))
4672 goto out_overflow;
4673 len = be32_to_cpup(p);
4674 if (len > NFS4_FHSIZE)
4675 return -EIO;
4676 fh->size = len;
4677 p = xdr_inline_decode(xdr, len);
4678 if (unlikely(!p))
4679 goto out_overflow;
4680 memcpy(fh->data, p, len);
4681 return 0;
4682out_overflow:
4683 print_overflow_msg(__func__, xdr);
4684 return -EIO;
4685}
4686
4687static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4688{
4689 int status;
4690
4691 status = decode_op_hdr(xdr, OP_LINK);
4692 if (status)
4693 return status;
4694 return decode_change_info(xdr, cinfo);
4695}
4696
4697/*
4698 * We create the owner, so we know a proper owner.id length is 4.
4699 */
4700static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4701{
4702 uint64_t offset, length, clientid;
4703 __be32 *p;
4704 uint32_t namelen, type;
4705
4706 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4707 if (unlikely(!p))
4708 goto out_overflow;
4709 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4710 p = xdr_decode_hyper(p, &length);
4711 type = be32_to_cpup(p++); /* 4 byte read */
4712 if (fl != NULL) { /* manipulate file lock */
4713 fl->fl_start = (loff_t)offset;
4714 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4715 if (length == ~(uint64_t)0)
4716 fl->fl_end = OFFSET_MAX;
4717 fl->fl_type = F_WRLCK;
4718 if (type & 1)
4719 fl->fl_type = F_RDLCK;
4720 fl->fl_pid = 0;
4721 }
4722 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4723 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4724 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4725 if (likely(p))
4726 return -NFS4ERR_DENIED;
4727out_overflow:
4728 print_overflow_msg(__func__, xdr);
4729 return -EIO;
4730}
4731
4732static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4733{
4734 int status;
4735
4736 status = decode_op_hdr(xdr, OP_LOCK);
4737 if (status == -EIO)
4738 goto out;
4739 if (status == 0) {
4740 status = decode_stateid(xdr, &res->stateid);
4741 if (unlikely(status))
4742 goto out;
4743 } else if (status == -NFS4ERR_DENIED)
4744 status = decode_lock_denied(xdr, NULL);
4745 if (res->open_seqid != NULL)
4746 nfs_increment_open_seqid(status, res->open_seqid);
4747 nfs_increment_lock_seqid(status, res->lock_seqid);
4748out:
4749 return status;
4750}
4751
4752static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4753{
4754 int status;
4755 status = decode_op_hdr(xdr, OP_LOCKT);
4756 if (status == -NFS4ERR_DENIED)
4757 return decode_lock_denied(xdr, res->denied);
4758 return status;
4759}
4760
4761static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4762{
4763 int status;
4764
4765 status = decode_op_hdr(xdr, OP_LOCKU);
4766 if (status != -EIO)
4767 nfs_increment_lock_seqid(status, res->seqid);
4768 if (status == 0)
4769 status = decode_stateid(xdr, &res->stateid);
4770 return status;
4771}
4772
4773static int decode_release_lockowner(struct xdr_stream *xdr)
4774{
4775 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4776}
4777
4778static int decode_lookup(struct xdr_stream *xdr)
4779{
4780 return decode_op_hdr(xdr, OP_LOOKUP);
4781}
4782
4783/* This is too sick! */
4784static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4785{
4786 __be32 *p;
4787 uint32_t limit_type, nblocks, blocksize;
4788
4789 p = xdr_inline_decode(xdr, 12);
4790 if (unlikely(!p))
4791 goto out_overflow;
4792 limit_type = be32_to_cpup(p++);
4793 switch (limit_type) {
4794 case 1:
4795 xdr_decode_hyper(p, maxsize);
4796 break;
4797 case 2:
4798 nblocks = be32_to_cpup(p++);
4799 blocksize = be32_to_cpup(p);
4800 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4801 }
4802 return 0;
4803out_overflow:
4804 print_overflow_msg(__func__, xdr);
4805 return -EIO;
4806}
4807
4808static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4809{
4810 __be32 *p;
4811 uint32_t delegation_type;
4812 int status;
4813
4814 p = xdr_inline_decode(xdr, 4);
4815 if (unlikely(!p))
4816 goto out_overflow;
4817 delegation_type = be32_to_cpup(p);
4818 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4819 res->delegation_type = 0;
4820 return 0;
4821 }
4822 status = decode_stateid(xdr, &res->delegation);
4823 if (unlikely(status))
4824 return status;
4825 p = xdr_inline_decode(xdr, 4);
4826 if (unlikely(!p))
4827 goto out_overflow;
4828 res->do_recall = be32_to_cpup(p);
4829
4830 switch (delegation_type) {
4831 case NFS4_OPEN_DELEGATE_READ:
4832 res->delegation_type = FMODE_READ;
4833 break;
4834 case NFS4_OPEN_DELEGATE_WRITE:
4835 res->delegation_type = FMODE_WRITE|FMODE_READ;
4836 if (decode_space_limit(xdr, &res->maxsize) < 0)
4837 return -EIO;
4838 }
4839 return decode_ace(xdr, NULL, res->server->nfs_client);
4840out_overflow:
4841 print_overflow_msg(__func__, xdr);
4842 return -EIO;
4843}
4844
4845static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4846{
4847 __be32 *p;
4848 uint32_t savewords, bmlen, i;
4849 int status;
4850
4851 status = decode_op_hdr(xdr, OP_OPEN);
4852 if (status != -EIO)
4853 nfs_increment_open_seqid(status, res->seqid);
4854 if (!status)
4855 status = decode_stateid(xdr, &res->stateid);
4856 if (unlikely(status))
4857 return status;
4858
4859 decode_change_info(xdr, &res->cinfo);
4860
4861 p = xdr_inline_decode(xdr, 8);
4862 if (unlikely(!p))
4863 goto out_overflow;
4864 res->rflags = be32_to_cpup(p++);
4865 bmlen = be32_to_cpup(p);
4866 if (bmlen > 10)
4867 goto xdr_error;
4868
4869 p = xdr_inline_decode(xdr, bmlen << 2);
4870 if (unlikely(!p))
4871 goto out_overflow;
4872 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4873 for (i = 0; i < savewords; ++i)
4874 res->attrset[i] = be32_to_cpup(p++);
4875 for (; i < NFS4_BITMAP_SIZE; i++)
4876 res->attrset[i] = 0;
4877
4878 return decode_delegation(xdr, res);
4879xdr_error:
4880 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4881 return -EIO;
4882out_overflow:
4883 print_overflow_msg(__func__, xdr);
4884 return -EIO;
4885}
4886
4887static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4888{
4889 int status;
4890
4891 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4892 if (status != -EIO)
4893 nfs_increment_open_seqid(status, res->seqid);
4894 if (!status)
4895 status = decode_stateid(xdr, &res->stateid);
4896 return status;
4897}
4898
4899static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4900{
4901 int status;
4902
4903 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4904 if (status != -EIO)
4905 nfs_increment_open_seqid(status, res->seqid);
4906 if (!status)
4907 status = decode_stateid(xdr, &res->stateid);
4908 return status;
4909}
4910
4911static int decode_putfh(struct xdr_stream *xdr)
4912{
4913 return decode_op_hdr(xdr, OP_PUTFH);
4914}
4915
4916static int decode_putrootfh(struct xdr_stream *xdr)
4917{
4918 return decode_op_hdr(xdr, OP_PUTROOTFH);
4919}
4920
4921static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4922{
4923 struct kvec *iov = req->rq_rcv_buf.head;
4924 __be32 *p;
4925 uint32_t count, eof, recvd, hdrlen;
4926 int status;
4927
4928 status = decode_op_hdr(xdr, OP_READ);
4929 if (status)
4930 return status;
4931 p = xdr_inline_decode(xdr, 8);
4932 if (unlikely(!p))
4933 goto out_overflow;
4934 eof = be32_to_cpup(p++);
4935 count = be32_to_cpup(p);
4936 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
4937 recvd = req->rq_rcv_buf.len - hdrlen;
4938 if (count > recvd) {
4939 dprintk("NFS: server cheating in read reply: "
4940 "count %u > recvd %u\n", count, recvd);
4941 count = recvd;
4942 eof = 0;
4943 }
4944 xdr_read_pages(xdr, count);
4945 res->eof = eof;
4946 res->count = count;
4947 return 0;
4948out_overflow:
4949 print_overflow_msg(__func__, xdr);
4950 return -EIO;
4951}
4952
4953static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4954{
4955 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4956 struct kvec *iov = rcvbuf->head;
4957 size_t hdrlen;
4958 u32 recvd, pglen = rcvbuf->page_len;
4959 int status;
4960 __be32 verf[2];
4961
4962 status = decode_op_hdr(xdr, OP_READDIR);
4963 if (!status)
4964 status = decode_verifier(xdr, readdir->verifier.data);
4965 if (unlikely(status))
4966 return status;
4967 memcpy(verf, readdir->verifier.data, sizeof(verf));
4968 dprintk("%s: verifier = %08x:%08x\n",
4969 __func__, verf[0], verf[1]);
4970
4971 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4972 recvd = rcvbuf->len - hdrlen;
4973 if (pglen > recvd)
4974 pglen = recvd;
4975 xdr_read_pages(xdr, pglen);
4976
4977
4978 return pglen;
4979}
4980
4981static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4982{
4983 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4984 struct kvec *iov = rcvbuf->head;
4985 size_t hdrlen;
4986 u32 len, recvd;
4987 __be32 *p;
4988 int status;
4989
4990 status = decode_op_hdr(xdr, OP_READLINK);
4991 if (status)
4992 return status;
4993
4994 /* Convert length of symlink */
4995 p = xdr_inline_decode(xdr, 4);
4996 if (unlikely(!p))
4997 goto out_overflow;
4998 len = be32_to_cpup(p);
4999 if (len >= rcvbuf->page_len || len <= 0) {
5000 dprintk("nfs: server returned giant symlink!\n");
5001 return -ENAMETOOLONG;
5002 }
5003 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
5004 recvd = req->rq_rcv_buf.len - hdrlen;
5005 if (recvd < len) {
5006 dprintk("NFS: server cheating in readlink reply: "
5007 "count %u > recvd %u\n", len, recvd);
5008 return -EIO;
5009 }
5010 xdr_read_pages(xdr, len);
5011 /*
5012 * The XDR encode routine has set things up so that
5013 * the link text will be copied directly into the
5014 * buffer. We just have to do overflow-checking,
5015 * and and null-terminate the text (the VFS expects
5016 * null-termination).
5017 */
5018 xdr_terminate_string(rcvbuf, len);
5019 return 0;
5020out_overflow:
5021 print_overflow_msg(__func__, xdr);
5022 return -EIO;
5023}
5024
5025static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5026{
5027 int status;
5028
5029 status = decode_op_hdr(xdr, OP_REMOVE);
5030 if (status)
5031 goto out;
5032 status = decode_change_info(xdr, cinfo);
5033out:
5034 return status;
5035}
5036
5037static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5038 struct nfs4_change_info *new_cinfo)
5039{
5040 int status;
5041
5042 status = decode_op_hdr(xdr, OP_RENAME);
5043 if (status)
5044 goto out;
5045 if ((status = decode_change_info(xdr, old_cinfo)))
5046 goto out;
5047 status = decode_change_info(xdr, new_cinfo);
5048out:
5049 return status;
5050}
5051
5052static int decode_renew(struct xdr_stream *xdr)
5053{
5054 return decode_op_hdr(xdr, OP_RENEW);
5055}
5056
5057static int
5058decode_restorefh(struct xdr_stream *xdr)
5059{
5060 return decode_op_hdr(xdr, OP_RESTOREFH);
5061}
5062
5063static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5064 struct nfs_getaclres *res)
5065{
5066 __be32 *savep, *bm_p;
5067 uint32_t attrlen,
5068 bitmap[3] = {0};
5069 struct kvec *iov = req->rq_rcv_buf.head;
5070 int status;
5071 size_t page_len = xdr->buf->page_len;
5072
5073 res->acl_len = 0;
5074 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5075 goto out;
5076
5077 bm_p = xdr->p;
5078 res->acl_data_offset = be32_to_cpup(bm_p) + 2;
5079 res->acl_data_offset <<= 2;
5080 /* Check if the acl data starts beyond the allocated buffer */
5081 if (res->acl_data_offset > page_len)
5082 return -ERANGE;
5083
5084 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5085 goto out;
5086 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5087 goto out;
5088
5089 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5090 return -EIO;
5091 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5092 size_t hdrlen;
5093
5094 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5095 * are stored with the acl data to handle the problem of
5096 * variable length bitmaps.*/
5097 xdr->p = bm_p;
5098
5099 /* We ignore &savep and don't do consistency checks on
5100 * the attr length. Let userspace figure it out.... */
5101 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
5102 attrlen += res->acl_data_offset;
5103 if (attrlen > page_len) {
5104 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) {
5105 /* getxattr interface called with a NULL buf */
5106 res->acl_len = attrlen;
5107 goto out;
5108 }
5109 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5110 attrlen, page_len);
5111 return -EINVAL;
5112 }
5113 xdr_read_pages(xdr, attrlen);
5114 res->acl_len = attrlen;
5115 } else
5116 status = -EOPNOTSUPP;
5117
5118out:
5119 return status;
5120}
5121
5122static int
5123decode_savefh(struct xdr_stream *xdr)
5124{
5125 return decode_op_hdr(xdr, OP_SAVEFH);
5126}
5127
5128static int decode_setattr(struct xdr_stream *xdr)
5129{
5130 __be32 *p;
5131 uint32_t bmlen;
5132 int status;
5133
5134 status = decode_op_hdr(xdr, OP_SETATTR);
5135 if (status)
5136 return status;
5137 p = xdr_inline_decode(xdr, 4);
5138 if (unlikely(!p))
5139 goto out_overflow;
5140 bmlen = be32_to_cpup(p);
5141 p = xdr_inline_decode(xdr, bmlen << 2);
5142 if (likely(p))
5143 return 0;
5144out_overflow:
5145 print_overflow_msg(__func__, xdr);
5146 return -EIO;
5147}
5148
5149static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5150{
5151 __be32 *p;
5152 uint32_t opnum;
5153 int32_t nfserr;
5154
5155 p = xdr_inline_decode(xdr, 8);
5156 if (unlikely(!p))
5157 goto out_overflow;
5158 opnum = be32_to_cpup(p++);
5159 if (opnum != OP_SETCLIENTID) {
5160 dprintk("nfs: decode_setclientid: Server returned operation"
5161 " %d\n", opnum);
5162 return -EIO;
5163 }
5164 nfserr = be32_to_cpup(p);
5165 if (nfserr == NFS_OK) {
5166 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5167 if (unlikely(!p))
5168 goto out_overflow;
5169 p = xdr_decode_hyper(p, &res->clientid);
5170 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5171 } else if (nfserr == NFSERR_CLID_INUSE) {
5172 uint32_t len;
5173
5174 /* skip netid string */
5175 p = xdr_inline_decode(xdr, 4);
5176 if (unlikely(!p))
5177 goto out_overflow;
5178 len = be32_to_cpup(p);
5179 p = xdr_inline_decode(xdr, len);
5180 if (unlikely(!p))
5181 goto out_overflow;
5182
5183 /* skip uaddr string */
5184 p = xdr_inline_decode(xdr, 4);
5185 if (unlikely(!p))
5186 goto out_overflow;
5187 len = be32_to_cpup(p);
5188 p = xdr_inline_decode(xdr, len);
5189 if (unlikely(!p))
5190 goto out_overflow;
5191 return -NFSERR_CLID_INUSE;
5192 } else
5193 return nfs4_stat_to_errno(nfserr);
5194
5195 return 0;
5196out_overflow:
5197 print_overflow_msg(__func__, xdr);
5198 return -EIO;
5199}
5200
5201static int decode_setclientid_confirm(struct xdr_stream *xdr)
5202{
5203 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5204}
5205
5206static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5207{
5208 __be32 *p;
5209 int status;
5210
5211 status = decode_op_hdr(xdr, OP_WRITE);
5212 if (status)
5213 return status;
5214
5215 p = xdr_inline_decode(xdr, 16);
5216 if (unlikely(!p))
5217 goto out_overflow;
5218 res->count = be32_to_cpup(p++);
5219 res->verf->committed = be32_to_cpup(p++);
5220 memcpy(res->verf->verifier, p, NFS4_VERIFIER_SIZE);
5221 return 0;
5222out_overflow:
5223 print_overflow_msg(__func__, xdr);
5224 return -EIO;
5225}
5226
5227static int decode_delegreturn(struct xdr_stream *xdr)
5228{
5229 return decode_op_hdr(xdr, OP_DELEGRETURN);
5230}
5231
5232static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5233{
5234 __be32 *p;
5235
5236 p = xdr_inline_decode(xdr, 4);
5237 if (unlikely(!p))
5238 goto out_overflow;
5239 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5240 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5241 goto out_err;
5242
5243 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5244 if (unlikely(!p))
5245 goto out_overflow;
5246 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5247
5248 p = xdr_inline_decode(xdr, 8);
5249 if (unlikely(!p))
5250 goto out_overflow;
5251 flavor->gss.qop4 = be32_to_cpup(p++);
5252 flavor->gss.service = be32_to_cpup(p);
5253
5254 return 0;
5255
5256out_overflow:
5257 print_overflow_msg(__func__, xdr);
5258 return -EIO;
5259out_err:
5260 return -EINVAL;
5261}
5262
5263static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5264{
5265 struct nfs4_secinfo_flavor *sec_flavor;
5266 int status;
5267 __be32 *p;
5268 int i, num_flavors;
5269
5270 p = xdr_inline_decode(xdr, 4);
5271 if (unlikely(!p))
5272 goto out_overflow;
5273
5274 res->flavors->num_flavors = 0;
5275 num_flavors = be32_to_cpup(p);
5276
5277 for (i = 0; i < num_flavors; i++) {
5278 sec_flavor = &res->flavors->flavors[i];
5279 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5280 break;
5281
5282 p = xdr_inline_decode(xdr, 4);
5283 if (unlikely(!p))
5284 goto out_overflow;
5285 sec_flavor->flavor = be32_to_cpup(p);
5286
5287 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5288 status = decode_secinfo_gss(xdr, sec_flavor);
5289 if (status)
5290 goto out;
5291 }
5292 res->flavors->num_flavors++;
5293 }
5294
5295 status = 0;
5296out:
5297 return status;
5298out_overflow:
5299 print_overflow_msg(__func__, xdr);
5300 return -EIO;
5301}
5302
5303static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5304{
5305 int status = decode_op_hdr(xdr, OP_SECINFO);
5306 if (status)
5307 return status;
5308 return decode_secinfo_common(xdr, res);
5309}
5310
5311#if defined(CONFIG_NFS_V4_1)
5312static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5313{
5314 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5315 if (status)
5316 return status;
5317 return decode_secinfo_common(xdr, res);
5318}
5319
5320static int decode_exchange_id(struct xdr_stream *xdr,
5321 struct nfs41_exchange_id_res *res)
5322{
5323 __be32 *p;
5324 uint32_t dummy;
5325 char *dummy_str;
5326 int status;
5327 uint32_t impl_id_count;
5328
5329 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5330 if (status)
5331 return status;
5332
5333 p = xdr_inline_decode(xdr, 8);
5334 if (unlikely(!p))
5335 goto out_overflow;
5336 xdr_decode_hyper(p, &res->clientid);
5337 p = xdr_inline_decode(xdr, 12);
5338 if (unlikely(!p))
5339 goto out_overflow;
5340 res->seqid = be32_to_cpup(p++);
5341 res->flags = be32_to_cpup(p++);
5342
5343 /* We ask for SP4_NONE */
5344 dummy = be32_to_cpup(p);
5345 if (dummy != SP4_NONE)
5346 return -EIO;
5347
5348 /* server_owner4.so_minor_id */
5349 p = xdr_inline_decode(xdr, 8);
5350 if (unlikely(!p))
5351 goto out_overflow;
5352 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5353
5354 /* server_owner4.so_major_id */
5355 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5356 if (unlikely(status))
5357 return status;
5358 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5359 return -EIO;
5360 memcpy(res->server_owner->major_id, dummy_str, dummy);
5361 res->server_owner->major_id_sz = dummy;
5362
5363 /* server_scope4 */
5364 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5365 if (unlikely(status))
5366 return status;
5367 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5368 return -EIO;
5369 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5370 res->server_scope->server_scope_sz = dummy;
5371
5372 /* Implementation Id */
5373 p = xdr_inline_decode(xdr, 4);
5374 if (unlikely(!p))
5375 goto out_overflow;
5376 impl_id_count = be32_to_cpup(p++);
5377
5378 if (impl_id_count) {
5379 /* nii_domain */
5380 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5381 if (unlikely(status))
5382 return status;
5383 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5384 return -EIO;
5385 memcpy(res->impl_id->domain, dummy_str, dummy);
5386
5387 /* nii_name */
5388 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5389 if (unlikely(status))
5390 return status;
5391 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5392 return -EIO;
5393 memcpy(res->impl_id->name, dummy_str, dummy);
5394
5395 /* nii_date */
5396 p = xdr_inline_decode(xdr, 12);
5397 if (unlikely(!p))
5398 goto out_overflow;
5399 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5400 res->impl_id->date.nseconds = be32_to_cpup(p);
5401
5402 /* if there's more than one entry, ignore the rest */
5403 }
5404 return 0;
5405out_overflow:
5406 print_overflow_msg(__func__, xdr);
5407 return -EIO;
5408}
5409
5410static int decode_chan_attrs(struct xdr_stream *xdr,
5411 struct nfs4_channel_attrs *attrs)
5412{
5413 __be32 *p;
5414 u32 nr_attrs, val;
5415
5416 p = xdr_inline_decode(xdr, 28);
5417 if (unlikely(!p))
5418 goto out_overflow;
5419 val = be32_to_cpup(p++); /* headerpadsz */
5420 if (val)
5421 return -EINVAL; /* no support for header padding yet */
5422 attrs->max_rqst_sz = be32_to_cpup(p++);
5423 attrs->max_resp_sz = be32_to_cpup(p++);
5424 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5425 attrs->max_ops = be32_to_cpup(p++);
5426 attrs->max_reqs = be32_to_cpup(p++);
5427 nr_attrs = be32_to_cpup(p);
5428 if (unlikely(nr_attrs > 1)) {
5429 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5430 "count %u\n", __func__, nr_attrs);
5431 return -EINVAL;
5432 }
5433 if (nr_attrs == 1) {
5434 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5435 if (unlikely(!p))
5436 goto out_overflow;
5437 }
5438 return 0;
5439out_overflow:
5440 print_overflow_msg(__func__, xdr);
5441 return -EIO;
5442}
5443
5444static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5445{
5446 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5447}
5448
5449static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5450 struct nfs41_bind_conn_to_session_res *res)
5451{
5452 __be32 *p;
5453 int status;
5454
5455 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5456 if (!status)
5457 status = decode_sessionid(xdr, &res->session->sess_id);
5458 if (unlikely(status))
5459 return status;
5460
5461 /* dir flags, rdma mode bool */
5462 p = xdr_inline_decode(xdr, 8);
5463 if (unlikely(!p))
5464 goto out_overflow;
5465
5466 res->dir = be32_to_cpup(p++);
5467 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5468 return -EIO;
5469 if (be32_to_cpup(p) == 0)
5470 res->use_conn_in_rdma_mode = false;
5471 else
5472 res->use_conn_in_rdma_mode = true;
5473
5474 return 0;
5475out_overflow:
5476 print_overflow_msg(__func__, xdr);
5477 return -EIO;
5478}
5479
5480static int decode_create_session(struct xdr_stream *xdr,
5481 struct nfs41_create_session_res *res)
5482{
5483 __be32 *p;
5484 int status;
5485 struct nfs_client *clp = res->client;
5486 struct nfs4_session *session = clp->cl_session;
5487
5488 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5489 if (!status)
5490 status = decode_sessionid(xdr, &session->sess_id);
5491 if (unlikely(status))
5492 return status;
5493
5494 /* seqid, flags */
5495 p = xdr_inline_decode(xdr, 8);
5496 if (unlikely(!p))
5497 goto out_overflow;
5498 clp->cl_seqid = be32_to_cpup(p++);
5499 session->flags = be32_to_cpup(p);
5500
5501 /* Channel attributes */
5502 status = decode_chan_attrs(xdr, &session->fc_attrs);
5503 if (!status)
5504 status = decode_chan_attrs(xdr, &session->bc_attrs);
5505 return status;
5506out_overflow:
5507 print_overflow_msg(__func__, xdr);
5508 return -EIO;
5509}
5510
5511static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5512{
5513 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5514}
5515
5516static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5517{
5518 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5519}
5520
5521static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5522{
5523 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5524}
5525#endif /* CONFIG_NFS_V4_1 */
5526
5527static int decode_sequence(struct xdr_stream *xdr,
5528 struct nfs4_sequence_res *res,
5529 struct rpc_rqst *rqstp)
5530{
5531#if defined(CONFIG_NFS_V4_1)
5532 struct nfs4_sessionid id;
5533 u32 dummy;
5534 int status;
5535 __be32 *p;
5536
5537 if (!res->sr_session)
5538 return 0;
5539
5540 status = decode_op_hdr(xdr, OP_SEQUENCE);
5541 if (!status)
5542 status = decode_sessionid(xdr, &id);
5543 if (unlikely(status))
5544 goto out_err;
5545
5546 /*
5547 * If the server returns different values for sessionID, slotID or
5548 * sequence number, the server is looney tunes.
5549 */
5550 status = -EREMOTEIO;
5551
5552 if (memcmp(id.data, res->sr_session->sess_id.data,
5553 NFS4_MAX_SESSIONID_LEN)) {
5554 dprintk("%s Invalid session id\n", __func__);
5555 goto out_err;
5556 }
5557
5558 p = xdr_inline_decode(xdr, 20);
5559 if (unlikely(!p))
5560 goto out_overflow;
5561
5562 /* seqid */
5563 dummy = be32_to_cpup(p++);
5564 if (dummy != res->sr_slot->seq_nr) {
5565 dprintk("%s Invalid sequence number\n", __func__);
5566 goto out_err;
5567 }
5568 /* slot id */
5569 dummy = be32_to_cpup(p++);
5570 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5571 dprintk("%s Invalid slot id\n", __func__);
5572 goto out_err;
5573 }
5574 /* highest slot id - currently not processed */
5575 dummy = be32_to_cpup(p++);
5576 /* target highest slot id - currently not processed */
5577 dummy = be32_to_cpup(p++);
5578 /* result flags */
5579 res->sr_status_flags = be32_to_cpup(p);
5580 status = 0;
5581out_err:
5582 res->sr_status = status;
5583 return status;
5584out_overflow:
5585 print_overflow_msg(__func__, xdr);
5586 status = -EIO;
5587 goto out_err;
5588#else /* CONFIG_NFS_V4_1 */
5589 return 0;
5590#endif /* CONFIG_NFS_V4_1 */
5591}
5592
5593#if defined(CONFIG_NFS_V4_1)
5594/*
5595 * TODO: Need to handle case when EOF != true;
5596 */
5597static int decode_getdevicelist(struct xdr_stream *xdr,
5598 struct pnfs_devicelist *res)
5599{
5600 __be32 *p;
5601 int status, i;
5602 struct nfs_writeverf verftemp;
5603
5604 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5605 if (status)
5606 return status;
5607
5608 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5609 if (unlikely(!p))
5610 goto out_overflow;
5611
5612 /* TODO: Skip cookie for now */
5613 p += 2;
5614
5615 /* Read verifier */
5616 p = xdr_decode_opaque_fixed(p, verftemp.verifier, NFS4_VERIFIER_SIZE);
5617
5618 res->num_devs = be32_to_cpup(p);
5619
5620 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5621
5622 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5623 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5624 __func__, res->num_devs);
5625 return -EIO;
5626 }
5627
5628 p = xdr_inline_decode(xdr,
5629 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5630 if (unlikely(!p))
5631 goto out_overflow;
5632 for (i = 0; i < res->num_devs; i++)
5633 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5634 NFS4_DEVICEID4_SIZE);
5635 res->eof = be32_to_cpup(p);
5636 return 0;
5637out_overflow:
5638 print_overflow_msg(__func__, xdr);
5639 return -EIO;
5640}
5641
5642static int decode_getdeviceinfo(struct xdr_stream *xdr,
5643 struct pnfs_device *pdev)
5644{
5645 __be32 *p;
5646 uint32_t len, type;
5647 int status;
5648
5649 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5650 if (status) {
5651 if (status == -ETOOSMALL) {
5652 p = xdr_inline_decode(xdr, 4);
5653 if (unlikely(!p))
5654 goto out_overflow;
5655 pdev->mincount = be32_to_cpup(p);
5656 dprintk("%s: Min count too small. mincnt = %u\n",
5657 __func__, pdev->mincount);
5658 }
5659 return status;
5660 }
5661
5662 p = xdr_inline_decode(xdr, 8);
5663 if (unlikely(!p))
5664 goto out_overflow;
5665 type = be32_to_cpup(p++);
5666 if (type != pdev->layout_type) {
5667 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5668 __func__, pdev->layout_type, type);
5669 return -EINVAL;
5670 }
5671 /*
5672 * Get the length of the opaque device_addr4. xdr_read_pages places
5673 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5674 * and places the remaining xdr data in xdr_buf->tail
5675 */
5676 pdev->mincount = be32_to_cpup(p);
5677 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5678
5679 /* Parse notification bitmap, verifying that it is zero. */
5680 p = xdr_inline_decode(xdr, 4);
5681 if (unlikely(!p))
5682 goto out_overflow;
5683 len = be32_to_cpup(p);
5684 if (len) {
5685 uint32_t i;
5686
5687 p = xdr_inline_decode(xdr, 4 * len);
5688 if (unlikely(!p))
5689 goto out_overflow;
5690 for (i = 0; i < len; i++, p++) {
5691 if (be32_to_cpup(p)) {
5692 dprintk("%s: notifications not supported\n",
5693 __func__);
5694 return -EIO;
5695 }
5696 }
5697 }
5698 return 0;
5699out_overflow:
5700 print_overflow_msg(__func__, xdr);
5701 return -EIO;
5702}
5703
5704static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5705 struct nfs4_layoutget_res *res)
5706{
5707 __be32 *p;
5708 int status;
5709 u32 layout_count;
5710 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5711 struct kvec *iov = rcvbuf->head;
5712 u32 hdrlen, recvd;
5713
5714 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5715 if (status)
5716 return status;
5717 p = xdr_inline_decode(xdr, 4);
5718 if (unlikely(!p))
5719 goto out_overflow;
5720 res->return_on_close = be32_to_cpup(p);
5721 decode_stateid(xdr, &res->stateid);
5722 p = xdr_inline_decode(xdr, 4);
5723 if (unlikely(!p))
5724 goto out_overflow;
5725 layout_count = be32_to_cpup(p);
5726 if (!layout_count) {
5727 dprintk("%s: server responded with empty layout array\n",
5728 __func__);
5729 return -EINVAL;
5730 }
5731
5732 p = xdr_inline_decode(xdr, 28);
5733 if (unlikely(!p))
5734 goto out_overflow;
5735 p = xdr_decode_hyper(p, &res->range.offset);
5736 p = xdr_decode_hyper(p, &res->range.length);
5737 res->range.iomode = be32_to_cpup(p++);
5738 res->type = be32_to_cpup(p++);
5739 res->layoutp->len = be32_to_cpup(p);
5740
5741 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5742 __func__,
5743 (unsigned long)res->range.offset,
5744 (unsigned long)res->range.length,
5745 res->range.iomode,
5746 res->type,
5747 res->layoutp->len);
5748
5749 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
5750 recvd = req->rq_rcv_buf.len - hdrlen;
5751 if (res->layoutp->len > recvd) {
5752 dprintk("NFS: server cheating in layoutget reply: "
5753 "layout len %u > recvd %u\n",
5754 res->layoutp->len, recvd);
5755 return -EINVAL;
5756 }
5757
5758 xdr_read_pages(xdr, res->layoutp->len);
5759
5760 if (layout_count > 1) {
5761 /* We only handle a length one array at the moment. Any
5762 * further entries are just ignored. Note that this means
5763 * the client may see a response that is less than the
5764 * minimum it requested.
5765 */
5766 dprintk("%s: server responded with %d layouts, dropping tail\n",
5767 __func__, layout_count);
5768 }
5769
5770 return 0;
5771out_overflow:
5772 print_overflow_msg(__func__, xdr);
5773 return -EIO;
5774}
5775
5776static int decode_layoutreturn(struct xdr_stream *xdr,
5777 struct nfs4_layoutreturn_res *res)
5778{
5779 __be32 *p;
5780 int status;
5781
5782 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5783 if (status)
5784 return status;
5785 p = xdr_inline_decode(xdr, 4);
5786 if (unlikely(!p))
5787 goto out_overflow;
5788 res->lrs_present = be32_to_cpup(p);
5789 if (res->lrs_present)
5790 status = decode_stateid(xdr, &res->stateid);
5791 return status;
5792out_overflow:
5793 print_overflow_msg(__func__, xdr);
5794 return -EIO;
5795}
5796
5797static int decode_layoutcommit(struct xdr_stream *xdr,
5798 struct rpc_rqst *req,
5799 struct nfs4_layoutcommit_res *res)
5800{
5801 __be32 *p;
5802 __u32 sizechanged;
5803 int status;
5804
5805 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5806 res->status = status;
5807 if (status)
5808 return status;
5809
5810 p = xdr_inline_decode(xdr, 4);
5811 if (unlikely(!p))
5812 goto out_overflow;
5813 sizechanged = be32_to_cpup(p);
5814
5815 if (sizechanged) {
5816 /* throw away new size */
5817 p = xdr_inline_decode(xdr, 8);
5818 if (unlikely(!p))
5819 goto out_overflow;
5820 }
5821 return 0;
5822out_overflow:
5823 print_overflow_msg(__func__, xdr);
5824 return -EIO;
5825}
5826
5827static int decode_test_stateid(struct xdr_stream *xdr,
5828 struct nfs41_test_stateid_res *res)
5829{
5830 __be32 *p;
5831 int status;
5832 int num_res;
5833
5834 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5835 if (status)
5836 return status;
5837
5838 p = xdr_inline_decode(xdr, 4);
5839 if (unlikely(!p))
5840 goto out_overflow;
5841 num_res = be32_to_cpup(p++);
5842 if (num_res != 1)
5843 goto out;
5844
5845 p = xdr_inline_decode(xdr, 4);
5846 if (unlikely(!p))
5847 goto out_overflow;
5848 res->status = be32_to_cpup(p++);
5849
5850 return status;
5851out_overflow:
5852 print_overflow_msg(__func__, xdr);
5853out:
5854 return -EIO;
5855}
5856
5857static int decode_free_stateid(struct xdr_stream *xdr,
5858 struct nfs41_free_stateid_res *res)
5859{
5860 __be32 *p;
5861 int status;
5862
5863 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5864 if (status)
5865 return status;
5866
5867 p = xdr_inline_decode(xdr, 4);
5868 if (unlikely(!p))
5869 goto out_overflow;
5870 res->status = be32_to_cpup(p++);
5871 return res->status;
5872out_overflow:
5873 print_overflow_msg(__func__, xdr);
5874 return -EIO;
5875}
5876#endif /* CONFIG_NFS_V4_1 */
5877
5878/*
5879 * END OF "GENERIC" DECODE ROUTINES.
5880 */
5881
5882/*
5883 * Decode OPEN_DOWNGRADE response
5884 */
5885static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5886 struct xdr_stream *xdr,
5887 struct nfs_closeres *res)
5888{
5889 struct compound_hdr hdr;
5890 int status;
5891
5892 status = decode_compound_hdr(xdr, &hdr);
5893 if (status)
5894 goto out;
5895 status = decode_sequence(xdr, &res->seq_res, rqstp);
5896 if (status)
5897 goto out;
5898 status = decode_putfh(xdr);
5899 if (status)
5900 goto out;
5901 status = decode_open_downgrade(xdr, res);
5902 if (status != 0)
5903 goto out;
5904 decode_getfattr(xdr, res->fattr, res->server);
5905out:
5906 return status;
5907}
5908
5909/*
5910 * Decode ACCESS response
5911 */
5912static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5913 struct nfs4_accessres *res)
5914{
5915 struct compound_hdr hdr;
5916 int status;
5917
5918 status = decode_compound_hdr(xdr, &hdr);
5919 if (status)
5920 goto out;
5921 status = decode_sequence(xdr, &res->seq_res, rqstp);
5922 if (status)
5923 goto out;
5924 status = decode_putfh(xdr);
5925 if (status != 0)
5926 goto out;
5927 status = decode_access(xdr, res);
5928 if (status != 0)
5929 goto out;
5930 decode_getfattr(xdr, res->fattr, res->server);
5931out:
5932 return status;
5933}
5934
5935/*
5936 * Decode LOOKUP response
5937 */
5938static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5939 struct nfs4_lookup_res *res)
5940{
5941 struct compound_hdr hdr;
5942 int status;
5943
5944 status = decode_compound_hdr(xdr, &hdr);
5945 if (status)
5946 goto out;
5947 status = decode_sequence(xdr, &res->seq_res, rqstp);
5948 if (status)
5949 goto out;
5950 status = decode_putfh(xdr);
5951 if (status)
5952 goto out;
5953 status = decode_lookup(xdr);
5954 if (status)
5955 goto out;
5956 status = decode_getfh(xdr, res->fh);
5957 if (status)
5958 goto out;
5959 status = decode_getfattr(xdr, res->fattr, res->server);
5960out:
5961 return status;
5962}
5963
5964/*
5965 * Decode LOOKUP_ROOT response
5966 */
5967static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5968 struct xdr_stream *xdr,
5969 struct nfs4_lookup_res *res)
5970{
5971 struct compound_hdr hdr;
5972 int status;
5973
5974 status = decode_compound_hdr(xdr, &hdr);
5975 if (status)
5976 goto out;
5977 status = decode_sequence(xdr, &res->seq_res, rqstp);
5978 if (status)
5979 goto out;
5980 status = decode_putrootfh(xdr);
5981 if (status)
5982 goto out;
5983 status = decode_getfh(xdr, res->fh);
5984 if (status == 0)
5985 status = decode_getfattr(xdr, res->fattr, res->server);
5986out:
5987 return status;
5988}
5989
5990/*
5991 * Decode REMOVE response
5992 */
5993static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5994 struct nfs_removeres *res)
5995{
5996 struct compound_hdr hdr;
5997 int status;
5998
5999 status = decode_compound_hdr(xdr, &hdr);
6000 if (status)
6001 goto out;
6002 status = decode_sequence(xdr, &res->seq_res, rqstp);
6003 if (status)
6004 goto out;
6005 status = decode_putfh(xdr);
6006 if (status)
6007 goto out;
6008 status = decode_remove(xdr, &res->cinfo);
6009out:
6010 return status;
6011}
6012
6013/*
6014 * Decode RENAME response
6015 */
6016static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6017 struct nfs_renameres *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_savefh(xdr);
6032 if (status)
6033 goto out;
6034 status = decode_putfh(xdr);
6035 if (status)
6036 goto out;
6037 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6038out:
6039 return status;
6040}
6041
6042/*
6043 * Decode LINK response
6044 */
6045static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6046 struct nfs4_link_res *res)
6047{
6048 struct compound_hdr hdr;
6049 int status;
6050
6051 status = decode_compound_hdr(xdr, &hdr);
6052 if (status)
6053 goto out;
6054 status = decode_sequence(xdr, &res->seq_res, rqstp);
6055 if (status)
6056 goto out;
6057 status = decode_putfh(xdr);
6058 if (status)
6059 goto out;
6060 status = decode_savefh(xdr);
6061 if (status)
6062 goto out;
6063 status = decode_putfh(xdr);
6064 if (status)
6065 goto out;
6066 status = decode_link(xdr, &res->cinfo);
6067 if (status)
6068 goto out;
6069 /*
6070 * Note order: OP_LINK leaves the directory as the current
6071 * filehandle.
6072 */
6073 status = decode_restorefh(xdr);
6074 if (status)
6075 goto out;
6076 decode_getfattr(xdr, res->fattr, res->server);
6077out:
6078 return status;
6079}
6080
6081/*
6082 * Decode CREATE response
6083 */
6084static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6085 struct nfs4_create_res *res)
6086{
6087 struct compound_hdr hdr;
6088 int status;
6089
6090 status = decode_compound_hdr(xdr, &hdr);
6091 if (status)
6092 goto out;
6093 status = decode_sequence(xdr, &res->seq_res, rqstp);
6094 if (status)
6095 goto out;
6096 status = decode_putfh(xdr);
6097 if (status)
6098 goto out;
6099 status = decode_create(xdr, &res->dir_cinfo);
6100 if (status)
6101 goto out;
6102 status = decode_getfh(xdr, res->fh);
6103 if (status)
6104 goto out;
6105 decode_getfattr(xdr, res->fattr, res->server);
6106out:
6107 return status;
6108}
6109
6110/*
6111 * Decode SYMLINK response
6112 */
6113static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6114 struct nfs4_create_res *res)
6115{
6116 return nfs4_xdr_dec_create(rqstp, xdr, res);
6117}
6118
6119/*
6120 * Decode GETATTR response
6121 */
6122static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6123 struct nfs4_getattr_res *res)
6124{
6125 struct compound_hdr hdr;
6126 int status;
6127
6128 status = decode_compound_hdr(xdr, &hdr);
6129 if (status)
6130 goto out;
6131 status = decode_sequence(xdr, &res->seq_res, rqstp);
6132 if (status)
6133 goto out;
6134 status = decode_putfh(xdr);
6135 if (status)
6136 goto out;
6137 status = decode_getfattr(xdr, res->fattr, res->server);
6138out:
6139 return status;
6140}
6141
6142/*
6143 * Encode an SETACL request
6144 */
6145static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6146 struct nfs_setaclargs *args)
6147{
6148 struct compound_hdr hdr = {
6149 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6150 };
6151
6152 encode_compound_hdr(xdr, req, &hdr);
6153 encode_sequence(xdr, &args->seq_args, &hdr);
6154 encode_putfh(xdr, args->fh, &hdr);
6155 encode_setacl(xdr, args, &hdr);
6156 encode_nops(&hdr);
6157}
6158
6159/*
6160 * Decode SETACL response
6161 */
6162static int
6163nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6164 struct nfs_setaclres *res)
6165{
6166 struct compound_hdr hdr;
6167 int status;
6168
6169 status = decode_compound_hdr(xdr, &hdr);
6170 if (status)
6171 goto out;
6172 status = decode_sequence(xdr, &res->seq_res, rqstp);
6173 if (status)
6174 goto out;
6175 status = decode_putfh(xdr);
6176 if (status)
6177 goto out;
6178 status = decode_setattr(xdr);
6179out:
6180 return status;
6181}
6182
6183/*
6184 * Decode GETACL response
6185 */
6186static int
6187nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6188 struct nfs_getaclres *res)
6189{
6190 struct compound_hdr hdr;
6191 int status;
6192
6193 if (res->acl_scratch != NULL) {
6194 void *p = page_address(res->acl_scratch);
6195 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
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_getacl(xdr, rqstp, res);
6207
6208out:
6209 return status;
6210}
6211
6212/*
6213 * Decode CLOSE response
6214 */
6215static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6216 struct nfs_closeres *res)
6217{
6218 struct compound_hdr hdr;
6219 int status;
6220
6221 status = decode_compound_hdr(xdr, &hdr);
6222 if (status)
6223 goto out;
6224 status = decode_sequence(xdr, &res->seq_res, rqstp);
6225 if (status)
6226 goto out;
6227 status = decode_putfh(xdr);
6228 if (status)
6229 goto out;
6230 status = decode_close(xdr, res);
6231 if (status != 0)
6232 goto out;
6233 /*
6234 * Note: Server may do delete on close for this file
6235 * in which case the getattr call will fail with
6236 * an ESTALE error. Shouldn't be a problem,
6237 * though, since fattr->valid will remain unset.
6238 */
6239 decode_getfattr(xdr, res->fattr, res->server);
6240out:
6241 return status;
6242}
6243
6244/*
6245 * Decode OPEN response
6246 */
6247static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6248 struct nfs_openres *res)
6249{
6250 struct compound_hdr hdr;
6251 int status;
6252
6253 status = decode_compound_hdr(xdr, &hdr);
6254 if (status)
6255 goto out;
6256 status = decode_sequence(xdr, &res->seq_res, rqstp);
6257 if (status)
6258 goto out;
6259 status = decode_putfh(xdr);
6260 if (status)
6261 goto out;
6262 status = decode_open(xdr, res);
6263 if (status)
6264 goto out;
6265 status = decode_getfh(xdr, &res->fh);
6266 if (status)
6267 goto out;
6268 decode_getfattr(xdr, res->f_attr, res->server);
6269out:
6270 return status;
6271}
6272
6273/*
6274 * Decode OPEN_CONFIRM response
6275 */
6276static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6277 struct xdr_stream *xdr,
6278 struct nfs_open_confirmres *res)
6279{
6280 struct compound_hdr hdr;
6281 int status;
6282
6283 status = decode_compound_hdr(xdr, &hdr);
6284 if (status)
6285 goto out;
6286 status = decode_putfh(xdr);
6287 if (status)
6288 goto out;
6289 status = decode_open_confirm(xdr, res);
6290out:
6291 return status;
6292}
6293
6294/*
6295 * Decode OPEN response
6296 */
6297static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6298 struct xdr_stream *xdr,
6299 struct nfs_openres *res)
6300{
6301 struct compound_hdr hdr;
6302 int status;
6303
6304 status = decode_compound_hdr(xdr, &hdr);
6305 if (status)
6306 goto out;
6307 status = decode_sequence(xdr, &res->seq_res, rqstp);
6308 if (status)
6309 goto out;
6310 status = decode_putfh(xdr);
6311 if (status)
6312 goto out;
6313 status = decode_open(xdr, res);
6314 if (status)
6315 goto out;
6316 decode_getfattr(xdr, res->f_attr, res->server);
6317out:
6318 return status;
6319}
6320
6321/*
6322 * Decode SETATTR response
6323 */
6324static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6325 struct xdr_stream *xdr,
6326 struct nfs_setattrres *res)
6327{
6328 struct compound_hdr hdr;
6329 int status;
6330
6331 status = decode_compound_hdr(xdr, &hdr);
6332 if (status)
6333 goto out;
6334 status = decode_sequence(xdr, &res->seq_res, rqstp);
6335 if (status)
6336 goto out;
6337 status = decode_putfh(xdr);
6338 if (status)
6339 goto out;
6340 status = decode_setattr(xdr);
6341 if (status)
6342 goto out;
6343 decode_getfattr(xdr, res->fattr, res->server);
6344out:
6345 return status;
6346}
6347
6348/*
6349 * Decode LOCK response
6350 */
6351static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6352 struct nfs_lock_res *res)
6353{
6354 struct compound_hdr hdr;
6355 int status;
6356
6357 status = decode_compound_hdr(xdr, &hdr);
6358 if (status)
6359 goto out;
6360 status = decode_sequence(xdr, &res->seq_res, rqstp);
6361 if (status)
6362 goto out;
6363 status = decode_putfh(xdr);
6364 if (status)
6365 goto out;
6366 status = decode_lock(xdr, res);
6367out:
6368 return status;
6369}
6370
6371/*
6372 * Decode LOCKT response
6373 */
6374static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6375 struct nfs_lockt_res *res)
6376{
6377 struct compound_hdr hdr;
6378 int status;
6379
6380 status = decode_compound_hdr(xdr, &hdr);
6381 if (status)
6382 goto out;
6383 status = decode_sequence(xdr, &res->seq_res, rqstp);
6384 if (status)
6385 goto out;
6386 status = decode_putfh(xdr);
6387 if (status)
6388 goto out;
6389 status = decode_lockt(xdr, res);
6390out:
6391 return status;
6392}
6393
6394/*
6395 * Decode LOCKU response
6396 */
6397static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6398 struct nfs_locku_res *res)
6399{
6400 struct compound_hdr hdr;
6401 int status;
6402
6403 status = decode_compound_hdr(xdr, &hdr);
6404 if (status)
6405 goto out;
6406 status = decode_sequence(xdr, &res->seq_res, rqstp);
6407 if (status)
6408 goto out;
6409 status = decode_putfh(xdr);
6410 if (status)
6411 goto out;
6412 status = decode_locku(xdr, res);
6413out:
6414 return status;
6415}
6416
6417static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6418 struct xdr_stream *xdr, void *dummy)
6419{
6420 struct compound_hdr hdr;
6421 int status;
6422
6423 status = decode_compound_hdr(xdr, &hdr);
6424 if (!status)
6425 status = decode_release_lockowner(xdr);
6426 return status;
6427}
6428
6429/*
6430 * Decode READLINK response
6431 */
6432static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6433 struct xdr_stream *xdr,
6434 struct nfs4_readlink_res *res)
6435{
6436 struct compound_hdr hdr;
6437 int status;
6438
6439 status = decode_compound_hdr(xdr, &hdr);
6440 if (status)
6441 goto out;
6442 status = decode_sequence(xdr, &res->seq_res, rqstp);
6443 if (status)
6444 goto out;
6445 status = decode_putfh(xdr);
6446 if (status)
6447 goto out;
6448 status = decode_readlink(xdr, rqstp);
6449out:
6450 return status;
6451}
6452
6453/*
6454 * Decode READDIR response
6455 */
6456static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6457 struct nfs4_readdir_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, rqstp);
6466 if (status)
6467 goto out;
6468 status = decode_putfh(xdr);
6469 if (status)
6470 goto out;
6471 status = decode_readdir(xdr, rqstp, res);
6472out:
6473 return status;
6474}
6475
6476/*
6477 * Decode Read response
6478 */
6479static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6480 struct nfs_readres *res)
6481{
6482 struct compound_hdr hdr;
6483 int status;
6484
6485 status = decode_compound_hdr(xdr, &hdr);
6486 if (status)
6487 goto out;
6488 status = decode_sequence(xdr, &res->seq_res, rqstp);
6489 if (status)
6490 goto out;
6491 status = decode_putfh(xdr);
6492 if (status)
6493 goto out;
6494 status = decode_read(xdr, rqstp, res);
6495 if (!status)
6496 status = res->count;
6497out:
6498 return status;
6499}
6500
6501/*
6502 * Decode WRITE response
6503 */
6504static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6505 struct nfs_writeres *res)
6506{
6507 struct compound_hdr hdr;
6508 int status;
6509
6510 status = decode_compound_hdr(xdr, &hdr);
6511 if (status)
6512 goto out;
6513 status = decode_sequence(xdr, &res->seq_res, rqstp);
6514 if (status)
6515 goto out;
6516 status = decode_putfh(xdr);
6517 if (status)
6518 goto out;
6519 status = decode_write(xdr, res);
6520 if (status)
6521 goto out;
6522 if (res->fattr)
6523 decode_getfattr(xdr, res->fattr, res->server);
6524 if (!status)
6525 status = res->count;
6526out:
6527 return status;
6528}
6529
6530/*
6531 * Decode COMMIT response
6532 */
6533static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6534 struct nfs_commitres *res)
6535{
6536 struct compound_hdr hdr;
6537 int status;
6538
6539 status = decode_compound_hdr(xdr, &hdr);
6540 if (status)
6541 goto out;
6542 status = decode_sequence(xdr, &res->seq_res, rqstp);
6543 if (status)
6544 goto out;
6545 status = decode_putfh(xdr);
6546 if (status)
6547 goto out;
6548 status = decode_commit(xdr, res);
6549out:
6550 return status;
6551}
6552
6553/*
6554 * Decode FSINFO response
6555 */
6556static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6557 struct nfs4_fsinfo_res *res)
6558{
6559 struct compound_hdr hdr;
6560 int status;
6561
6562 status = decode_compound_hdr(xdr, &hdr);
6563 if (!status)
6564 status = decode_sequence(xdr, &res->seq_res, req);
6565 if (!status)
6566 status = decode_putfh(xdr);
6567 if (!status)
6568 status = decode_fsinfo(xdr, res->fsinfo);
6569 return status;
6570}
6571
6572/*
6573 * Decode PATHCONF response
6574 */
6575static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6576 struct nfs4_pathconf_res *res)
6577{
6578 struct compound_hdr hdr;
6579 int status;
6580
6581 status = decode_compound_hdr(xdr, &hdr);
6582 if (!status)
6583 status = decode_sequence(xdr, &res->seq_res, req);
6584 if (!status)
6585 status = decode_putfh(xdr);
6586 if (!status)
6587 status = decode_pathconf(xdr, res->pathconf);
6588 return status;
6589}
6590
6591/*
6592 * Decode STATFS response
6593 */
6594static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6595 struct nfs4_statfs_res *res)
6596{
6597 struct compound_hdr hdr;
6598 int status;
6599
6600 status = decode_compound_hdr(xdr, &hdr);
6601 if (!status)
6602 status = decode_sequence(xdr, &res->seq_res, req);
6603 if (!status)
6604 status = decode_putfh(xdr);
6605 if (!status)
6606 status = decode_statfs(xdr, res->fsstat);
6607 return status;
6608}
6609
6610/*
6611 * Decode GETATTR_BITMAP response
6612 */
6613static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6614 struct xdr_stream *xdr,
6615 struct nfs4_server_caps_res *res)
6616{
6617 struct compound_hdr hdr;
6618 int status;
6619
6620 status = decode_compound_hdr(xdr, &hdr);
6621 if (status)
6622 goto out;
6623 status = decode_sequence(xdr, &res->seq_res, req);
6624 if (status)
6625 goto out;
6626 status = decode_putfh(xdr);
6627 if (status)
6628 goto out;
6629 status = decode_server_caps(xdr, res);
6630out:
6631 return status;
6632}
6633
6634/*
6635 * Decode RENEW response
6636 */
6637static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6638 void *__unused)
6639{
6640 struct compound_hdr hdr;
6641 int status;
6642
6643 status = decode_compound_hdr(xdr, &hdr);
6644 if (!status)
6645 status = decode_renew(xdr);
6646 return status;
6647}
6648
6649/*
6650 * Decode SETCLIENTID response
6651 */
6652static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6653 struct xdr_stream *xdr,
6654 struct nfs4_setclientid_res *res)
6655{
6656 struct compound_hdr hdr;
6657 int status;
6658
6659 status = decode_compound_hdr(xdr, &hdr);
6660 if (!status)
6661 status = decode_setclientid(xdr, res);
6662 return status;
6663}
6664
6665/*
6666 * Decode SETCLIENTID_CONFIRM response
6667 */
6668static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6669 struct xdr_stream *xdr,
6670 struct nfs_fsinfo *fsinfo)
6671{
6672 struct compound_hdr hdr;
6673 int status;
6674
6675 status = decode_compound_hdr(xdr, &hdr);
6676 if (!status)
6677 status = decode_setclientid_confirm(xdr);
6678 if (!status)
6679 status = decode_putrootfh(xdr);
6680 if (!status)
6681 status = decode_fsinfo(xdr, fsinfo);
6682 return status;
6683}
6684
6685/*
6686 * Decode DELEGRETURN response
6687 */
6688static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6689 struct xdr_stream *xdr,
6690 struct nfs4_delegreturnres *res)
6691{
6692 struct compound_hdr hdr;
6693 int status;
6694
6695 status = decode_compound_hdr(xdr, &hdr);
6696 if (status)
6697 goto out;
6698 status = decode_sequence(xdr, &res->seq_res, rqstp);
6699 if (status)
6700 goto out;
6701 status = decode_putfh(xdr);
6702 if (status != 0)
6703 goto out;
6704 status = decode_getfattr(xdr, res->fattr, res->server);
6705 if (status != 0)
6706 goto out;
6707 status = decode_delegreturn(xdr);
6708out:
6709 return status;
6710}
6711
6712/*
6713 * Decode FS_LOCATIONS response
6714 */
6715static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6716 struct xdr_stream *xdr,
6717 struct nfs4_fs_locations_res *res)
6718{
6719 struct compound_hdr hdr;
6720 int status;
6721
6722 status = decode_compound_hdr(xdr, &hdr);
6723 if (status)
6724 goto out;
6725 status = decode_sequence(xdr, &res->seq_res, req);
6726 if (status)
6727 goto out;
6728 status = decode_putfh(xdr);
6729 if (status)
6730 goto out;
6731 status = decode_lookup(xdr);
6732 if (status)
6733 goto out;
6734 xdr_enter_page(xdr, PAGE_SIZE);
6735 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6736 NULL, res->fs_locations,
6737 res->fs_locations->server);
6738out:
6739 return status;
6740}
6741
6742/*
6743 * Decode SECINFO response
6744 */
6745static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6746 struct xdr_stream *xdr,
6747 struct nfs4_secinfo_res *res)
6748{
6749 struct compound_hdr hdr;
6750 int status;
6751
6752 status = decode_compound_hdr(xdr, &hdr);
6753 if (status)
6754 goto out;
6755 status = decode_sequence(xdr, &res->seq_res, rqstp);
6756 if (status)
6757 goto out;
6758 status = decode_putfh(xdr);
6759 if (status)
6760 goto out;
6761 status = decode_secinfo(xdr, res);
6762out:
6763 return status;
6764}
6765
6766#if defined(CONFIG_NFS_V4_1)
6767/*
6768 * Decode BIND_CONN_TO_SESSION response
6769 */
6770static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6771 struct xdr_stream *xdr,
6772 void *res)
6773{
6774 struct compound_hdr hdr;
6775 int status;
6776
6777 status = decode_compound_hdr(xdr, &hdr);
6778 if (!status)
6779 status = decode_bind_conn_to_session(xdr, res);
6780 return status;
6781}
6782
6783/*
6784 * Decode EXCHANGE_ID response
6785 */
6786static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6787 struct xdr_stream *xdr,
6788 void *res)
6789{
6790 struct compound_hdr hdr;
6791 int status;
6792
6793 status = decode_compound_hdr(xdr, &hdr);
6794 if (!status)
6795 status = decode_exchange_id(xdr, res);
6796 return status;
6797}
6798
6799/*
6800 * Decode CREATE_SESSION response
6801 */
6802static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6803 struct xdr_stream *xdr,
6804 struct nfs41_create_session_res *res)
6805{
6806 struct compound_hdr hdr;
6807 int status;
6808
6809 status = decode_compound_hdr(xdr, &hdr);
6810 if (!status)
6811 status = decode_create_session(xdr, res);
6812 return status;
6813}
6814
6815/*
6816 * Decode DESTROY_SESSION response
6817 */
6818static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6819 struct xdr_stream *xdr,
6820 void *res)
6821{
6822 struct compound_hdr hdr;
6823 int status;
6824
6825 status = decode_compound_hdr(xdr, &hdr);
6826 if (!status)
6827 status = decode_destroy_session(xdr, res);
6828 return status;
6829}
6830
6831/*
6832 * Decode DESTROY_CLIENTID response
6833 */
6834static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6835 struct xdr_stream *xdr,
6836 void *res)
6837{
6838 struct compound_hdr hdr;
6839 int status;
6840
6841 status = decode_compound_hdr(xdr, &hdr);
6842 if (!status)
6843 status = decode_destroy_clientid(xdr, res);
6844 return status;
6845}
6846
6847/*
6848 * Decode SEQUENCE response
6849 */
6850static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6851 struct xdr_stream *xdr,
6852 struct nfs4_sequence_res *res)
6853{
6854 struct compound_hdr hdr;
6855 int status;
6856
6857 status = decode_compound_hdr(xdr, &hdr);
6858 if (!status)
6859 status = decode_sequence(xdr, res, rqstp);
6860 return status;
6861}
6862
6863/*
6864 * Decode GET_LEASE_TIME response
6865 */
6866static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6867 struct xdr_stream *xdr,
6868 struct nfs4_get_lease_time_res *res)
6869{
6870 struct compound_hdr hdr;
6871 int status;
6872
6873 status = decode_compound_hdr(xdr, &hdr);
6874 if (!status)
6875 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6876 if (!status)
6877 status = decode_putrootfh(xdr);
6878 if (!status)
6879 status = decode_fsinfo(xdr, res->lr_fsinfo);
6880 return status;
6881}
6882
6883/*
6884 * Decode RECLAIM_COMPLETE response
6885 */
6886static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6887 struct xdr_stream *xdr,
6888 struct nfs41_reclaim_complete_res *res)
6889{
6890 struct compound_hdr hdr;
6891 int status;
6892
6893 status = decode_compound_hdr(xdr, &hdr);
6894 if (!status)
6895 status = decode_sequence(xdr, &res->seq_res, rqstp);
6896 if (!status)
6897 status = decode_reclaim_complete(xdr, (void *)NULL);
6898 return status;
6899}
6900
6901/*
6902 * Decode GETDEVICELIST response
6903 */
6904static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6905 struct xdr_stream *xdr,
6906 struct nfs4_getdevicelist_res *res)
6907{
6908 struct compound_hdr hdr;
6909 int status;
6910
6911 dprintk("encoding getdevicelist!\n");
6912
6913 status = decode_compound_hdr(xdr, &hdr);
6914 if (status != 0)
6915 goto out;
6916 status = decode_sequence(xdr, &res->seq_res, rqstp);
6917 if (status != 0)
6918 goto out;
6919 status = decode_putfh(xdr);
6920 if (status != 0)
6921 goto out;
6922 status = decode_getdevicelist(xdr, res->devlist);
6923out:
6924 return status;
6925}
6926
6927/*
6928 * Decode GETDEVINFO response
6929 */
6930static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6931 struct xdr_stream *xdr,
6932 struct nfs4_getdeviceinfo_res *res)
6933{
6934 struct compound_hdr hdr;
6935 int status;
6936
6937 status = decode_compound_hdr(xdr, &hdr);
6938 if (status != 0)
6939 goto out;
6940 status = decode_sequence(xdr, &res->seq_res, rqstp);
6941 if (status != 0)
6942 goto out;
6943 status = decode_getdeviceinfo(xdr, res->pdev);
6944out:
6945 return status;
6946}
6947
6948/*
6949 * Decode LAYOUTGET response
6950 */
6951static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6952 struct xdr_stream *xdr,
6953 struct nfs4_layoutget_res *res)
6954{
6955 struct compound_hdr hdr;
6956 int status;
6957
6958 status = decode_compound_hdr(xdr, &hdr);
6959 if (status)
6960 goto out;
6961 status = decode_sequence(xdr, &res->seq_res, rqstp);
6962 if (status)
6963 goto out;
6964 status = decode_putfh(xdr);
6965 if (status)
6966 goto out;
6967 status = decode_layoutget(xdr, rqstp, res);
6968out:
6969 return status;
6970}
6971
6972/*
6973 * Decode LAYOUTRETURN response
6974 */
6975static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6976 struct xdr_stream *xdr,
6977 struct nfs4_layoutreturn_res *res)
6978{
6979 struct compound_hdr hdr;
6980 int status;
6981
6982 status = decode_compound_hdr(xdr, &hdr);
6983 if (status)
6984 goto out;
6985 status = decode_sequence(xdr, &res->seq_res, rqstp);
6986 if (status)
6987 goto out;
6988 status = decode_putfh(xdr);
6989 if (status)
6990 goto out;
6991 status = decode_layoutreturn(xdr, res);
6992out:
6993 return status;
6994}
6995
6996/*
6997 * Decode LAYOUTCOMMIT response
6998 */
6999static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7000 struct xdr_stream *xdr,
7001 struct nfs4_layoutcommit_res *res)
7002{
7003 struct compound_hdr hdr;
7004 int status;
7005
7006 status = decode_compound_hdr(xdr, &hdr);
7007 if (status)
7008 goto out;
7009 status = decode_sequence(xdr, &res->seq_res, rqstp);
7010 if (status)
7011 goto out;
7012 status = decode_putfh(xdr);
7013 if (status)
7014 goto out;
7015 status = decode_layoutcommit(xdr, rqstp, res);
7016 if (status)
7017 goto out;
7018 decode_getfattr(xdr, res->fattr, res->server);
7019out:
7020 return status;
7021}
7022
7023/*
7024 * Decode SECINFO_NO_NAME response
7025 */
7026static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7027 struct xdr_stream *xdr,
7028 struct nfs4_secinfo_res *res)
7029{
7030 struct compound_hdr hdr;
7031 int status;
7032
7033 status = decode_compound_hdr(xdr, &hdr);
7034 if (status)
7035 goto out;
7036 status = decode_sequence(xdr, &res->seq_res, rqstp);
7037 if (status)
7038 goto out;
7039 status = decode_putrootfh(xdr);
7040 if (status)
7041 goto out;
7042 status = decode_secinfo_no_name(xdr, res);
7043out:
7044 return status;
7045}
7046
7047/*
7048 * Decode TEST_STATEID response
7049 */
7050static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7051 struct xdr_stream *xdr,
7052 struct nfs41_test_stateid_res *res)
7053{
7054 struct compound_hdr hdr;
7055 int status;
7056
7057 status = decode_compound_hdr(xdr, &hdr);
7058 if (status)
7059 goto out;
7060 status = decode_sequence(xdr, &res->seq_res, rqstp);
7061 if (status)
7062 goto out;
7063 status = decode_test_stateid(xdr, res);
7064out:
7065 return status;
7066}
7067
7068/*
7069 * Decode FREE_STATEID response
7070 */
7071static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7072 struct xdr_stream *xdr,
7073 struct nfs41_free_stateid_res *res)
7074{
7075 struct compound_hdr hdr;
7076 int status;
7077
7078 status = decode_compound_hdr(xdr, &hdr);
7079 if (status)
7080 goto out;
7081 status = decode_sequence(xdr, &res->seq_res, rqstp);
7082 if (status)
7083 goto out;
7084 status = decode_free_stateid(xdr, res);
7085out:
7086 return status;
7087}
7088#endif /* CONFIG_NFS_V4_1 */
7089
7090/**
7091 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7092 * the local page cache.
7093 * @xdr: XDR stream where entry resides
7094 * @entry: buffer to fill in with entry data
7095 * @plus: boolean indicating whether this should be a readdirplus entry
7096 *
7097 * Returns zero if successful, otherwise a negative errno value is
7098 * returned.
7099 *
7100 * This function is not invoked during READDIR reply decoding, but
7101 * rather whenever an application invokes the getdents(2) system call
7102 * on a directory already in our cache.
7103 */
7104int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7105 int plus)
7106{
7107 uint32_t bitmap[3] = {0};
7108 uint32_t len;
7109 __be32 *p = xdr_inline_decode(xdr, 4);
7110 if (unlikely(!p))
7111 goto out_overflow;
7112 if (*p == xdr_zero) {
7113 p = xdr_inline_decode(xdr, 4);
7114 if (unlikely(!p))
7115 goto out_overflow;
7116 if (*p == xdr_zero)
7117 return -EAGAIN;
7118 entry->eof = 1;
7119 return -EBADCOOKIE;
7120 }
7121
7122 p = xdr_inline_decode(xdr, 12);
7123 if (unlikely(!p))
7124 goto out_overflow;
7125 entry->prev_cookie = entry->cookie;
7126 p = xdr_decode_hyper(p, &entry->cookie);
7127 entry->len = be32_to_cpup(p);
7128
7129 p = xdr_inline_decode(xdr, entry->len);
7130 if (unlikely(!p))
7131 goto out_overflow;
7132 entry->name = (const char *) p;
7133
7134 /*
7135 * In case the server doesn't return an inode number,
7136 * we fake one here. (We don't use inode number 0,
7137 * since glibc seems to choke on it...)
7138 */
7139 entry->ino = 1;
7140 entry->fattr->valid = 0;
7141
7142 if (decode_attr_bitmap(xdr, bitmap) < 0)
7143 goto out_overflow;
7144
7145 if (decode_attr_length(xdr, &len, &p) < 0)
7146 goto out_overflow;
7147
7148 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7149 NULL, entry->server) < 0)
7150 goto out_overflow;
7151 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7152 entry->ino = entry->fattr->mounted_on_fileid;
7153 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7154 entry->ino = entry->fattr->fileid;
7155
7156 entry->d_type = DT_UNKNOWN;
7157 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7158 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7159
7160 return 0;
7161
7162out_overflow:
7163 print_overflow_msg(__func__, xdr);
7164 return -EAGAIN;
7165}
7166
7167/*
7168 * We need to translate between nfs status return values and
7169 * the local errno values which may not be the same.
7170 */
7171static struct {
7172 int stat;
7173 int errno;
7174} nfs_errtbl[] = {
7175 { NFS4_OK, 0 },
7176 { NFS4ERR_PERM, -EPERM },
7177 { NFS4ERR_NOENT, -ENOENT },
7178 { NFS4ERR_IO, -errno_NFSERR_IO},
7179 { NFS4ERR_NXIO, -ENXIO },
7180 { NFS4ERR_ACCESS, -EACCES },
7181 { NFS4ERR_EXIST, -EEXIST },
7182 { NFS4ERR_XDEV, -EXDEV },
7183 { NFS4ERR_NOTDIR, -ENOTDIR },
7184 { NFS4ERR_ISDIR, -EISDIR },
7185 { NFS4ERR_INVAL, -EINVAL },
7186 { NFS4ERR_FBIG, -EFBIG },
7187 { NFS4ERR_NOSPC, -ENOSPC },
7188 { NFS4ERR_ROFS, -EROFS },
7189 { NFS4ERR_MLINK, -EMLINK },
7190 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7191 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7192 { NFS4ERR_DQUOT, -EDQUOT },
7193 { NFS4ERR_STALE, -ESTALE },
7194 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7195 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7196 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7197 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7198 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7199 { NFS4ERR_BADTYPE, -EBADTYPE },
7200 { NFS4ERR_LOCKED, -EAGAIN },
7201 { NFS4ERR_SYMLINK, -ELOOP },
7202 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7203 { NFS4ERR_DEADLOCK, -EDEADLK },
7204 { -1, -EIO }
7205};
7206
7207/*
7208 * Convert an NFS error code to a local one.
7209 * This one is used jointly by NFSv2 and NFSv3.
7210 */
7211static int
7212nfs4_stat_to_errno(int stat)
7213{
7214 int i;
7215 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7216 if (nfs_errtbl[i].stat == stat)
7217 return nfs_errtbl[i].errno;
7218 }
7219 if (stat <= 10000 || stat > 10100) {
7220 /* The server is looney tunes. */
7221 return -EREMOTEIO;
7222 }
7223 /* If we cannot translate the error, the recovery routines should
7224 * handle it.
7225 * Note: remaining NFSv4 error codes have values > 10000, so should
7226 * not conflict with native Linux error codes.
7227 */
7228 return -stat;
7229}
7230
7231#define PROC(proc, argtype, restype) \
7232[NFSPROC4_CLNT_##proc] = { \
7233 .p_proc = NFSPROC4_COMPOUND, \
7234 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7235 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7236 .p_arglen = NFS4_##argtype##_sz, \
7237 .p_replen = NFS4_##restype##_sz, \
7238 .p_statidx = NFSPROC4_CLNT_##proc, \
7239 .p_name = #proc, \
7240}
7241
7242struct rpc_procinfo nfs4_procedures[] = {
7243 PROC(READ, enc_read, dec_read),
7244 PROC(WRITE, enc_write, dec_write),
7245 PROC(COMMIT, enc_commit, dec_commit),
7246 PROC(OPEN, enc_open, dec_open),
7247 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7248 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7249 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7250 PROC(CLOSE, enc_close, dec_close),
7251 PROC(SETATTR, enc_setattr, dec_setattr),
7252 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7253 PROC(RENEW, enc_renew, dec_renew),
7254 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7255 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7256 PROC(LOCK, enc_lock, dec_lock),
7257 PROC(LOCKT, enc_lockt, dec_lockt),
7258 PROC(LOCKU, enc_locku, dec_locku),
7259 PROC(ACCESS, enc_access, dec_access),
7260 PROC(GETATTR, enc_getattr, dec_getattr),
7261 PROC(LOOKUP, enc_lookup, dec_lookup),
7262 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7263 PROC(REMOVE, enc_remove, dec_remove),
7264 PROC(RENAME, enc_rename, dec_rename),
7265 PROC(LINK, enc_link, dec_link),
7266 PROC(SYMLINK, enc_symlink, dec_symlink),
7267 PROC(CREATE, enc_create, dec_create),
7268 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7269 PROC(STATFS, enc_statfs, dec_statfs),
7270 PROC(READLINK, enc_readlink, dec_readlink),
7271 PROC(READDIR, enc_readdir, dec_readdir),
7272 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7273 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7274 PROC(GETACL, enc_getacl, dec_getacl),
7275 PROC(SETACL, enc_setacl, dec_setacl),
7276 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7277 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7278 PROC(SECINFO, enc_secinfo, dec_secinfo),
7279#if defined(CONFIG_NFS_V4_1)
7280 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7281 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7282 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7283 PROC(SEQUENCE, enc_sequence, dec_sequence),
7284 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7285 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7286 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7287 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7288 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7289 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7290 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7291 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7292 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7293 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7294 PROC(BIND_CONN_TO_SESSION,
7295 enc_bind_conn_to_session, dec_bind_conn_to_session),
7296 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7297#endif /* CONFIG_NFS_V4_1 */
7298};
7299
7300const struct rpc_version nfs_version4 = {
7301 .number = 4,
7302 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7303 .procs = nfs4_procedures
7304};
7305
7306/*
7307 * Local variables:
7308 * c-basic-offset: 8
7309 * End:
7310 */