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1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/sunrpc/clnt.h>
48#include <linux/sunrpc/msg_prot.h>
49#include <linux/sunrpc/gss_api.h>
50#include <linux/nfs.h>
51#include <linux/nfs4.h>
52#include <linux/nfs_fs.h>
53#include <linux/nfs_idmap.h>
54#include "nfs4_fs.h"
55#include "internal.h"
56#include "pnfs.h"
57
58#define NFSDBG_FACILITY NFSDBG_XDR
59
60/* Mapping from NFS error code to "errno" error code. */
61#define errno_NFSERR_IO EIO
62
63static int nfs4_stat_to_errno(int);
64
65/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
66#ifdef DEBUG
67#define NFS4_MAXTAGLEN 20
68#else
69#define NFS4_MAXTAGLEN 0
70#endif
71
72/* lock,open owner id:
73 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
74 */
75#define open_owner_id_maxsz (1 + 1 + 4)
76#define lock_owner_id_maxsz (1 + 1 + 4)
77#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
78#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
79#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
80#define op_encode_hdr_maxsz (1)
81#define op_decode_hdr_maxsz (2)
82#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
83#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
84#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
85#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
86#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
87 (NFS4_FHSIZE >> 2))
88#define decode_putfh_maxsz (op_decode_hdr_maxsz)
89#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
90#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
91#define encode_getfh_maxsz (op_encode_hdr_maxsz)
92#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
93 ((3+NFS4_FHSIZE) >> 2))
94#define nfs4_fattr_bitmap_maxsz 4
95#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
96#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
97#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
98#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
99#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
100/* This is based on getfattr, which uses the most attributes: */
101#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
102 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
103#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
104 nfs4_fattr_value_maxsz)
105#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
106#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
107 1 + 2 + 1 + \
108 nfs4_owner_maxsz + \
109 nfs4_group_maxsz + \
110 4 + 4)
111#define encode_savefh_maxsz (op_encode_hdr_maxsz)
112#define decode_savefh_maxsz (op_decode_hdr_maxsz)
113#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
114#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
115#define encode_fsinfo_maxsz (encode_getattr_maxsz)
116/* The 5 accounts for the PNFS attributes, and assumes that at most three
117 * layout types will be returned.
118 */
119#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
120 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
121#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
122#define decode_renew_maxsz (op_decode_hdr_maxsz)
123#define encode_setclientid_maxsz \
124 (op_encode_hdr_maxsz + \
125 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
126 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
127 1 /* sc_prog */ + \
128 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
129 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
130 1) /* sc_cb_ident */
131#define decode_setclientid_maxsz \
132 (op_decode_hdr_maxsz + \
133 2 + \
134 1024) /* large value for CLID_INUSE */
135#define encode_setclientid_confirm_maxsz \
136 (op_encode_hdr_maxsz + \
137 3 + (NFS4_VERIFIER_SIZE >> 2))
138#define decode_setclientid_confirm_maxsz \
139 (op_decode_hdr_maxsz)
140#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
141#define decode_lookup_maxsz (op_decode_hdr_maxsz)
142#define encode_share_access_maxsz \
143 (2)
144#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
145#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
146#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
147#define encode_open_maxsz (op_encode_hdr_maxsz + \
148 2 + encode_share_access_maxsz + 2 + \
149 open_owner_id_maxsz + \
150 encode_opentype_maxsz + \
151 encode_claim_null_maxsz)
152#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
153#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
154 decode_ace_maxsz)
155#define decode_change_info_maxsz (5)
156#define decode_open_maxsz (op_decode_hdr_maxsz + \
157 decode_stateid_maxsz + \
158 decode_change_info_maxsz + 1 + \
159 nfs4_fattr_bitmap_maxsz + \
160 decode_delegation_maxsz)
161#define encode_open_confirm_maxsz \
162 (op_encode_hdr_maxsz + \
163 encode_stateid_maxsz + 1)
164#define decode_open_confirm_maxsz \
165 (op_decode_hdr_maxsz + \
166 decode_stateid_maxsz)
167#define encode_open_downgrade_maxsz \
168 (op_encode_hdr_maxsz + \
169 encode_stateid_maxsz + 1 + \
170 encode_share_access_maxsz)
171#define decode_open_downgrade_maxsz \
172 (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz)
174#define encode_close_maxsz (op_encode_hdr_maxsz + \
175 1 + encode_stateid_maxsz)
176#define decode_close_maxsz (op_decode_hdr_maxsz + \
177 decode_stateid_maxsz)
178#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
179 encode_stateid_maxsz + \
180 encode_attrs_maxsz)
181#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
182 nfs4_fattr_bitmap_maxsz)
183#define encode_read_maxsz (op_encode_hdr_maxsz + \
184 encode_stateid_maxsz + 3)
185#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
186#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
187 2 + encode_verifier_maxsz + 5)
188#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
189 decode_verifier_maxsz)
190#define encode_readlink_maxsz (op_encode_hdr_maxsz)
191#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
192#define encode_write_maxsz (op_encode_hdr_maxsz + \
193 encode_stateid_maxsz + 4)
194#define decode_write_maxsz (op_decode_hdr_maxsz + \
195 2 + decode_verifier_maxsz)
196#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
197#define decode_commit_maxsz (op_decode_hdr_maxsz + \
198 decode_verifier_maxsz)
199#define encode_remove_maxsz (op_encode_hdr_maxsz + \
200 nfs4_name_maxsz)
201#define decode_remove_maxsz (op_decode_hdr_maxsz + \
202 decode_change_info_maxsz)
203#define encode_rename_maxsz (op_encode_hdr_maxsz + \
204 2 * nfs4_name_maxsz)
205#define decode_rename_maxsz (op_decode_hdr_maxsz + \
206 decode_change_info_maxsz + \
207 decode_change_info_maxsz)
208#define encode_link_maxsz (op_encode_hdr_maxsz + \
209 nfs4_name_maxsz)
210#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
211#define encode_lockowner_maxsz (7)
212#define encode_lock_maxsz (op_encode_hdr_maxsz + \
213 7 + \
214 1 + encode_stateid_maxsz + 1 + \
215 encode_lockowner_maxsz)
216#define decode_lock_denied_maxsz \
217 (8 + decode_lockowner_maxsz)
218#define decode_lock_maxsz (op_decode_hdr_maxsz + \
219 decode_lock_denied_maxsz)
220#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
221 encode_lockowner_maxsz)
222#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
223 decode_lock_denied_maxsz)
224#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
225 encode_stateid_maxsz + \
226 4)
227#define decode_locku_maxsz (op_decode_hdr_maxsz + \
228 decode_stateid_maxsz)
229#define encode_release_lockowner_maxsz \
230 (op_encode_hdr_maxsz + \
231 encode_lockowner_maxsz)
232#define decode_release_lockowner_maxsz \
233 (op_decode_hdr_maxsz)
234#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
235#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
236#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
237 1 + nfs4_name_maxsz + \
238 1 + \
239 nfs4_fattr_maxsz)
240#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
241#define encode_create_maxsz (op_encode_hdr_maxsz + \
242 1 + 2 + nfs4_name_maxsz + \
243 encode_attrs_maxsz)
244#define decode_create_maxsz (op_decode_hdr_maxsz + \
245 decode_change_info_maxsz + \
246 nfs4_fattr_bitmap_maxsz)
247#define encode_statfs_maxsz (encode_getattr_maxsz)
248#define decode_statfs_maxsz (decode_getattr_maxsz)
249#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
250#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
251#define encode_getacl_maxsz (encode_getattr_maxsz)
252#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
253 nfs4_fattr_bitmap_maxsz + 1)
254#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
255 encode_stateid_maxsz + 3)
256#define decode_setacl_maxsz (decode_setattr_maxsz)
257#define encode_fs_locations_maxsz \
258 (encode_getattr_maxsz)
259#define decode_fs_locations_maxsz \
260 (0)
261#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
262#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
263
264#if defined(CONFIG_NFS_V4_1)
265#define NFS4_MAX_MACHINE_NAME_LEN (64)
266
267#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
268 encode_verifier_maxsz + \
269 1 /* co_ownerid.len */ + \
270 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
271 1 /* flags */ + \
272 1 /* spa_how */ + \
273 0 /* SP4_NONE (for now) */ + \
274 1 /* zero implemetation id array */)
275#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
276 2 /* eir_clientid */ + \
277 1 /* eir_sequenceid */ + \
278 1 /* eir_flags */ + \
279 1 /* spr_how */ + \
280 0 /* SP4_NONE (for now) */ + \
281 2 /* eir_server_owner.so_minor_id */ + \
282 /* eir_server_owner.so_major_id<> */ \
283 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
284 /* eir_server_scope<> */ \
285 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
286 1 /* eir_server_impl_id array length */ + \
287 0 /* ignored eir_server_impl_id contents */)
288#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
289#define decode_channel_attrs_maxsz (6 + \
290 1 /* ca_rdma_ird.len */ + \
291 1 /* ca_rdma_ird */)
292#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
293 2 /* csa_clientid */ + \
294 1 /* csa_sequence */ + \
295 1 /* csa_flags */ + \
296 encode_channel_attrs_maxsz + \
297 encode_channel_attrs_maxsz + \
298 1 /* csa_cb_program */ + \
299 1 /* csa_sec_parms.len (1) */ + \
300 1 /* cb_secflavor (AUTH_SYS) */ + \
301 1 /* stamp */ + \
302 1 /* machinename.len */ + \
303 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
304 1 /* uid */ + \
305 1 /* gid */ + \
306 1 /* gids.len (0) */)
307#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
308 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
309 1 /* csr_sequence */ + \
310 1 /* csr_flags */ + \
311 decode_channel_attrs_maxsz + \
312 decode_channel_attrs_maxsz)
313#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
314#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
315#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
316 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
317#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
318 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
319#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
320#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
321#define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
322 encode_verifier_maxsz)
323#define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
324 2 /* nfs_cookie4 gdlr_cookie */ + \
325 decode_verifier_maxsz \
326 /* verifier4 gdlr_verifier */ + \
327 1 /* gdlr_deviceid_list count */ + \
328 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
329 NFS4_DEVICEID4_SIZE) \
330 /* gdlr_deviceid_list */ + \
331 1 /* bool gdlr_eof */)
332#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
333 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
334#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
335 1 /* layout type */ + \
336 1 /* opaque devaddr4 length */ + \
337 /* devaddr4 payload is read into page */ \
338 1 /* notification bitmap length */ + \
339 1 /* notification bitmap */)
340#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
341 encode_stateid_maxsz)
342#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
343 decode_stateid_maxsz + \
344 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
345#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
346 2 /* offset */ + \
347 2 /* length */ + \
348 1 /* reclaim */ + \
349 encode_stateid_maxsz + \
350 1 /* new offset (true) */ + \
351 2 /* last byte written */ + \
352 1 /* nt_timechanged (false) */ + \
353 1 /* layoutupdate4 layout type */ + \
354 1 /* NULL filelayout layoutupdate4 payload */)
355#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
356#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
357 encode_stateid_maxsz + \
358 1 /* FIXME: opaque lrf_body always empty at the moment */)
359#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
360 1 + decode_stateid_maxsz)
361#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
362#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
363#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
364 XDR_QUADLEN(NFS4_STATEID_SIZE))
365#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
366#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
367 XDR_QUADLEN(NFS4_STATEID_SIZE))
368#define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
369#else /* CONFIG_NFS_V4_1 */
370#define encode_sequence_maxsz 0
371#define decode_sequence_maxsz 0
372#endif /* CONFIG_NFS_V4_1 */
373
374#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
375#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
376#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
377 encode_sequence_maxsz + \
378 encode_putfh_maxsz + \
379 encode_read_maxsz)
380#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
381 decode_sequence_maxsz + \
382 decode_putfh_maxsz + \
383 decode_read_maxsz)
384#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
385 encode_sequence_maxsz + \
386 encode_putfh_maxsz + \
387 encode_readlink_maxsz)
388#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
389 decode_sequence_maxsz + \
390 decode_putfh_maxsz + \
391 decode_readlink_maxsz)
392#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
393 encode_sequence_maxsz + \
394 encode_putfh_maxsz + \
395 encode_readdir_maxsz)
396#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
397 decode_sequence_maxsz + \
398 decode_putfh_maxsz + \
399 decode_readdir_maxsz)
400#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
401 encode_sequence_maxsz + \
402 encode_putfh_maxsz + \
403 encode_write_maxsz + \
404 encode_getattr_maxsz)
405#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
406 decode_sequence_maxsz + \
407 decode_putfh_maxsz + \
408 decode_write_maxsz + \
409 decode_getattr_maxsz)
410#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
411 encode_sequence_maxsz + \
412 encode_putfh_maxsz + \
413 encode_commit_maxsz + \
414 encode_getattr_maxsz)
415#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
416 decode_sequence_maxsz + \
417 decode_putfh_maxsz + \
418 decode_commit_maxsz + \
419 decode_getattr_maxsz)
420#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
421 encode_sequence_maxsz + \
422 encode_putfh_maxsz + \
423 encode_savefh_maxsz + \
424 encode_open_maxsz + \
425 encode_getfh_maxsz + \
426 encode_getattr_maxsz + \
427 encode_restorefh_maxsz + \
428 encode_getattr_maxsz)
429#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
430 decode_sequence_maxsz + \
431 decode_putfh_maxsz + \
432 decode_savefh_maxsz + \
433 decode_open_maxsz + \
434 decode_getfh_maxsz + \
435 decode_getattr_maxsz + \
436 decode_restorefh_maxsz + \
437 decode_getattr_maxsz)
438#define NFS4_enc_open_confirm_sz \
439 (compound_encode_hdr_maxsz + \
440 encode_putfh_maxsz + \
441 encode_open_confirm_maxsz)
442#define NFS4_dec_open_confirm_sz \
443 (compound_decode_hdr_maxsz + \
444 decode_putfh_maxsz + \
445 decode_open_confirm_maxsz)
446#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
447 encode_sequence_maxsz + \
448 encode_putfh_maxsz + \
449 encode_open_maxsz + \
450 encode_getattr_maxsz)
451#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
452 decode_sequence_maxsz + \
453 decode_putfh_maxsz + \
454 decode_open_maxsz + \
455 decode_getattr_maxsz)
456#define NFS4_enc_open_downgrade_sz \
457 (compound_encode_hdr_maxsz + \
458 encode_sequence_maxsz + \
459 encode_putfh_maxsz + \
460 encode_open_downgrade_maxsz + \
461 encode_getattr_maxsz)
462#define NFS4_dec_open_downgrade_sz \
463 (compound_decode_hdr_maxsz + \
464 decode_sequence_maxsz + \
465 decode_putfh_maxsz + \
466 decode_open_downgrade_maxsz + \
467 decode_getattr_maxsz)
468#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
469 encode_sequence_maxsz + \
470 encode_putfh_maxsz + \
471 encode_close_maxsz + \
472 encode_getattr_maxsz)
473#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
474 decode_sequence_maxsz + \
475 decode_putfh_maxsz + \
476 decode_close_maxsz + \
477 decode_getattr_maxsz)
478#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
479 encode_sequence_maxsz + \
480 encode_putfh_maxsz + \
481 encode_setattr_maxsz + \
482 encode_getattr_maxsz)
483#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
484 decode_sequence_maxsz + \
485 decode_putfh_maxsz + \
486 decode_setattr_maxsz + \
487 decode_getattr_maxsz)
488#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
489 encode_sequence_maxsz + \
490 encode_putfh_maxsz + \
491 encode_fsinfo_maxsz)
492#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
493 decode_sequence_maxsz + \
494 decode_putfh_maxsz + \
495 decode_fsinfo_maxsz)
496#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
497 encode_renew_maxsz)
498#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
499 decode_renew_maxsz)
500#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
501 encode_setclientid_maxsz)
502#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
503 decode_setclientid_maxsz)
504#define NFS4_enc_setclientid_confirm_sz \
505 (compound_encode_hdr_maxsz + \
506 encode_setclientid_confirm_maxsz + \
507 encode_putrootfh_maxsz + \
508 encode_fsinfo_maxsz)
509#define NFS4_dec_setclientid_confirm_sz \
510 (compound_decode_hdr_maxsz + \
511 decode_setclientid_confirm_maxsz + \
512 decode_putrootfh_maxsz + \
513 decode_fsinfo_maxsz)
514#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
515 encode_sequence_maxsz + \
516 encode_putfh_maxsz + \
517 encode_lock_maxsz)
518#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
519 decode_sequence_maxsz + \
520 decode_putfh_maxsz + \
521 decode_lock_maxsz)
522#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
523 encode_sequence_maxsz + \
524 encode_putfh_maxsz + \
525 encode_lockt_maxsz)
526#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
527 decode_sequence_maxsz + \
528 decode_putfh_maxsz + \
529 decode_lockt_maxsz)
530#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
531 encode_sequence_maxsz + \
532 encode_putfh_maxsz + \
533 encode_locku_maxsz)
534#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
535 decode_sequence_maxsz + \
536 decode_putfh_maxsz + \
537 decode_locku_maxsz)
538#define NFS4_enc_release_lockowner_sz \
539 (compound_encode_hdr_maxsz + \
540 encode_lockowner_maxsz)
541#define NFS4_dec_release_lockowner_sz \
542 (compound_decode_hdr_maxsz + \
543 decode_lockowner_maxsz)
544#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
545 encode_sequence_maxsz + \
546 encode_putfh_maxsz + \
547 encode_access_maxsz + \
548 encode_getattr_maxsz)
549#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
550 decode_sequence_maxsz + \
551 decode_putfh_maxsz + \
552 decode_access_maxsz + \
553 decode_getattr_maxsz)
554#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
555 encode_sequence_maxsz + \
556 encode_putfh_maxsz + \
557 encode_getattr_maxsz)
558#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
559 decode_sequence_maxsz + \
560 decode_putfh_maxsz + \
561 decode_getattr_maxsz)
562#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
563 encode_sequence_maxsz + \
564 encode_putfh_maxsz + \
565 encode_lookup_maxsz + \
566 encode_getattr_maxsz + \
567 encode_getfh_maxsz)
568#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
569 decode_sequence_maxsz + \
570 decode_putfh_maxsz + \
571 decode_lookup_maxsz + \
572 decode_getattr_maxsz + \
573 decode_getfh_maxsz)
574#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
575 encode_sequence_maxsz + \
576 encode_putrootfh_maxsz + \
577 encode_getattr_maxsz + \
578 encode_getfh_maxsz)
579#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
580 decode_sequence_maxsz + \
581 decode_putrootfh_maxsz + \
582 decode_getattr_maxsz + \
583 decode_getfh_maxsz)
584#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
585 encode_sequence_maxsz + \
586 encode_putfh_maxsz + \
587 encode_remove_maxsz + \
588 encode_getattr_maxsz)
589#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
590 decode_sequence_maxsz + \
591 decode_putfh_maxsz + \
592 decode_remove_maxsz + \
593 decode_getattr_maxsz)
594#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
595 encode_sequence_maxsz + \
596 encode_putfh_maxsz + \
597 encode_savefh_maxsz + \
598 encode_putfh_maxsz + \
599 encode_rename_maxsz + \
600 encode_getattr_maxsz + \
601 encode_restorefh_maxsz + \
602 encode_getattr_maxsz)
603#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
604 decode_sequence_maxsz + \
605 decode_putfh_maxsz + \
606 decode_savefh_maxsz + \
607 decode_putfh_maxsz + \
608 decode_rename_maxsz + \
609 decode_getattr_maxsz + \
610 decode_restorefh_maxsz + \
611 decode_getattr_maxsz)
612#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
615 encode_savefh_maxsz + \
616 encode_putfh_maxsz + \
617 encode_link_maxsz + \
618 decode_getattr_maxsz + \
619 encode_restorefh_maxsz + \
620 decode_getattr_maxsz)
621#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
622 decode_sequence_maxsz + \
623 decode_putfh_maxsz + \
624 decode_savefh_maxsz + \
625 decode_putfh_maxsz + \
626 decode_link_maxsz + \
627 decode_getattr_maxsz + \
628 decode_restorefh_maxsz + \
629 decode_getattr_maxsz)
630#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
631 encode_sequence_maxsz + \
632 encode_putfh_maxsz + \
633 encode_symlink_maxsz + \
634 encode_getattr_maxsz + \
635 encode_getfh_maxsz)
636#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
637 decode_sequence_maxsz + \
638 decode_putfh_maxsz + \
639 decode_symlink_maxsz + \
640 decode_getattr_maxsz + \
641 decode_getfh_maxsz)
642#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
643 encode_sequence_maxsz + \
644 encode_putfh_maxsz + \
645 encode_savefh_maxsz + \
646 encode_create_maxsz + \
647 encode_getfh_maxsz + \
648 encode_getattr_maxsz + \
649 encode_restorefh_maxsz + \
650 encode_getattr_maxsz)
651#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
652 decode_sequence_maxsz + \
653 decode_putfh_maxsz + \
654 decode_savefh_maxsz + \
655 decode_create_maxsz + \
656 decode_getfh_maxsz + \
657 decode_getattr_maxsz + \
658 decode_restorefh_maxsz + \
659 decode_getattr_maxsz)
660#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
661 encode_sequence_maxsz + \
662 encode_putfh_maxsz + \
663 encode_getattr_maxsz)
664#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
665 decode_sequence_maxsz + \
666 decode_putfh_maxsz + \
667 decode_getattr_maxsz)
668#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
669 encode_sequence_maxsz + \
670 encode_putfh_maxsz + \
671 encode_statfs_maxsz)
672#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
673 decode_sequence_maxsz + \
674 decode_putfh_maxsz + \
675 decode_statfs_maxsz)
676#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
677 encode_sequence_maxsz + \
678 encode_putfh_maxsz + \
679 encode_getattr_maxsz)
680#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
681 decode_sequence_maxsz + \
682 decode_putfh_maxsz + \
683 decode_getattr_maxsz)
684#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
685 encode_sequence_maxsz + \
686 encode_putfh_maxsz + \
687 encode_delegreturn_maxsz + \
688 encode_getattr_maxsz)
689#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
690 decode_sequence_maxsz + \
691 decode_delegreturn_maxsz + \
692 decode_getattr_maxsz)
693#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
694 encode_sequence_maxsz + \
695 encode_putfh_maxsz + \
696 encode_getacl_maxsz)
697#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
698 decode_sequence_maxsz + \
699 decode_putfh_maxsz + \
700 decode_getacl_maxsz)
701#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
702 encode_sequence_maxsz + \
703 encode_putfh_maxsz + \
704 encode_setacl_maxsz)
705#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
706 decode_sequence_maxsz + \
707 decode_putfh_maxsz + \
708 decode_setacl_maxsz)
709#define NFS4_enc_fs_locations_sz \
710 (compound_encode_hdr_maxsz + \
711 encode_sequence_maxsz + \
712 encode_putfh_maxsz + \
713 encode_lookup_maxsz + \
714 encode_fs_locations_maxsz)
715#define NFS4_dec_fs_locations_sz \
716 (compound_decode_hdr_maxsz + \
717 decode_sequence_maxsz + \
718 decode_putfh_maxsz + \
719 decode_lookup_maxsz + \
720 decode_fs_locations_maxsz)
721#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
722 encode_sequence_maxsz + \
723 encode_putfh_maxsz + \
724 encode_secinfo_maxsz)
725#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
726 decode_sequence_maxsz + \
727 decode_putfh_maxsz + \
728 decode_secinfo_maxsz)
729#if defined(CONFIG_NFS_V4_1)
730#define NFS4_enc_exchange_id_sz \
731 (compound_encode_hdr_maxsz + \
732 encode_exchange_id_maxsz)
733#define NFS4_dec_exchange_id_sz \
734 (compound_decode_hdr_maxsz + \
735 decode_exchange_id_maxsz)
736#define NFS4_enc_create_session_sz \
737 (compound_encode_hdr_maxsz + \
738 encode_create_session_maxsz)
739#define NFS4_dec_create_session_sz \
740 (compound_decode_hdr_maxsz + \
741 decode_create_session_maxsz)
742#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
743 encode_destroy_session_maxsz)
744#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
745 decode_destroy_session_maxsz)
746#define NFS4_enc_sequence_sz \
747 (compound_decode_hdr_maxsz + \
748 encode_sequence_maxsz)
749#define NFS4_dec_sequence_sz \
750 (compound_decode_hdr_maxsz + \
751 decode_sequence_maxsz)
752#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
753 encode_sequence_maxsz + \
754 encode_putrootfh_maxsz + \
755 encode_fsinfo_maxsz)
756#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
757 decode_sequence_maxsz + \
758 decode_putrootfh_maxsz + \
759 decode_fsinfo_maxsz)
760#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
761 encode_sequence_maxsz + \
762 encode_reclaim_complete_maxsz)
763#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
764 decode_sequence_maxsz + \
765 decode_reclaim_complete_maxsz)
766#define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
767 encode_sequence_maxsz + \
768 encode_putfh_maxsz + \
769 encode_getdevicelist_maxsz)
770#define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
771 decode_sequence_maxsz + \
772 decode_putfh_maxsz + \
773 decode_getdevicelist_maxsz)
774#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
775 encode_sequence_maxsz +\
776 encode_getdeviceinfo_maxsz)
777#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_getdeviceinfo_maxsz)
780#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
781 encode_sequence_maxsz + \
782 encode_putfh_maxsz + \
783 encode_layoutget_maxsz)
784#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
785 decode_sequence_maxsz + \
786 decode_putfh_maxsz + \
787 decode_layoutget_maxsz)
788#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
789 encode_sequence_maxsz +\
790 encode_putfh_maxsz + \
791 encode_layoutcommit_maxsz + \
792 encode_getattr_maxsz)
793#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
794 decode_sequence_maxsz + \
795 decode_putfh_maxsz + \
796 decode_layoutcommit_maxsz + \
797 decode_getattr_maxsz)
798#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
799 encode_sequence_maxsz + \
800 encode_putfh_maxsz + \
801 encode_layoutreturn_maxsz)
802#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
803 decode_sequence_maxsz + \
804 decode_putfh_maxsz + \
805 decode_layoutreturn_maxsz)
806#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
807 encode_sequence_maxsz + \
808 encode_putrootfh_maxsz +\
809 encode_secinfo_no_name_maxsz)
810#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
811 decode_sequence_maxsz + \
812 decode_putrootfh_maxsz + \
813 decode_secinfo_no_name_maxsz)
814#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
815 encode_sequence_maxsz + \
816 encode_test_stateid_maxsz)
817#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
818 decode_sequence_maxsz + \
819 decode_test_stateid_maxsz)
820#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz + \
822 encode_free_stateid_maxsz)
823#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
824 decode_sequence_maxsz + \
825 decode_free_stateid_maxsz)
826
827const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
828 compound_encode_hdr_maxsz +
829 encode_sequence_maxsz +
830 encode_putfh_maxsz +
831 encode_getattr_maxsz) *
832 XDR_UNIT);
833
834const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
835 compound_decode_hdr_maxsz +
836 decode_sequence_maxsz +
837 decode_putfh_maxsz) *
838 XDR_UNIT);
839#endif /* CONFIG_NFS_V4_1 */
840
841static const umode_t nfs_type2fmt[] = {
842 [NF4BAD] = 0,
843 [NF4REG] = S_IFREG,
844 [NF4DIR] = S_IFDIR,
845 [NF4BLK] = S_IFBLK,
846 [NF4CHR] = S_IFCHR,
847 [NF4LNK] = S_IFLNK,
848 [NF4SOCK] = S_IFSOCK,
849 [NF4FIFO] = S_IFIFO,
850 [NF4ATTRDIR] = 0,
851 [NF4NAMEDATTR] = 0,
852};
853
854struct compound_hdr {
855 int32_t status;
856 uint32_t nops;
857 __be32 * nops_p;
858 uint32_t taglen;
859 char * tag;
860 uint32_t replen; /* expected reply words */
861 u32 minorversion;
862};
863
864static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
865{
866 __be32 *p = xdr_reserve_space(xdr, nbytes);
867 BUG_ON(!p);
868 return p;
869}
870
871static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
872{
873 __be32 *p;
874
875 p = xdr_reserve_space(xdr, 4 + len);
876 BUG_ON(p == NULL);
877 xdr_encode_opaque(p, str, len);
878}
879
880static void encode_compound_hdr(struct xdr_stream *xdr,
881 struct rpc_rqst *req,
882 struct compound_hdr *hdr)
883{
884 __be32 *p;
885 struct rpc_auth *auth = req->rq_cred->cr_auth;
886
887 /* initialize running count of expected bytes in reply.
888 * NOTE: the replied tag SHOULD be the same is the one sent,
889 * but this is not required as a MUST for the server to do so. */
890 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
891
892 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
893 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
894 p = reserve_space(xdr, 4 + hdr->taglen + 8);
895 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
896 *p++ = cpu_to_be32(hdr->minorversion);
897 hdr->nops_p = p;
898 *p = cpu_to_be32(hdr->nops);
899}
900
901static void encode_nops(struct compound_hdr *hdr)
902{
903 BUG_ON(hdr->nops > NFS4_MAX_OPS);
904 *hdr->nops_p = htonl(hdr->nops);
905}
906
907static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
908{
909 __be32 *p;
910
911 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
912 BUG_ON(p == NULL);
913 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
914}
915
916static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
917{
918 char owner_name[IDMAP_NAMESZ];
919 char owner_group[IDMAP_NAMESZ];
920 int owner_namelen = 0;
921 int owner_grouplen = 0;
922 __be32 *p;
923 __be32 *q;
924 int len;
925 uint32_t bmval0 = 0;
926 uint32_t bmval1 = 0;
927
928 /*
929 * We reserve enough space to write the entire attribute buffer at once.
930 * In the worst-case, this would be
931 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
932 * = 36 bytes, plus any contribution from variable-length fields
933 * such as owner/group.
934 */
935 len = 16;
936
937 /* Sigh */
938 if (iap->ia_valid & ATTR_SIZE)
939 len += 8;
940 if (iap->ia_valid & ATTR_MODE)
941 len += 4;
942 if (iap->ia_valid & ATTR_UID) {
943 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
944 if (owner_namelen < 0) {
945 dprintk("nfs: couldn't resolve uid %d to string\n",
946 iap->ia_uid);
947 /* XXX */
948 strcpy(owner_name, "nobody");
949 owner_namelen = sizeof("nobody") - 1;
950 /* goto out; */
951 }
952 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
953 }
954 if (iap->ia_valid & ATTR_GID) {
955 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
956 if (owner_grouplen < 0) {
957 dprintk("nfs: couldn't resolve gid %d to string\n",
958 iap->ia_gid);
959 strcpy(owner_group, "nobody");
960 owner_grouplen = sizeof("nobody") - 1;
961 /* goto out; */
962 }
963 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
964 }
965 if (iap->ia_valid & ATTR_ATIME_SET)
966 len += 16;
967 else if (iap->ia_valid & ATTR_ATIME)
968 len += 4;
969 if (iap->ia_valid & ATTR_MTIME_SET)
970 len += 16;
971 else if (iap->ia_valid & ATTR_MTIME)
972 len += 4;
973 p = reserve_space(xdr, len);
974
975 /*
976 * We write the bitmap length now, but leave the bitmap and the attribute
977 * buffer length to be backfilled at the end of this routine.
978 */
979 *p++ = cpu_to_be32(2);
980 q = p;
981 p += 3;
982
983 if (iap->ia_valid & ATTR_SIZE) {
984 bmval0 |= FATTR4_WORD0_SIZE;
985 p = xdr_encode_hyper(p, iap->ia_size);
986 }
987 if (iap->ia_valid & ATTR_MODE) {
988 bmval1 |= FATTR4_WORD1_MODE;
989 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
990 }
991 if (iap->ia_valid & ATTR_UID) {
992 bmval1 |= FATTR4_WORD1_OWNER;
993 p = xdr_encode_opaque(p, owner_name, owner_namelen);
994 }
995 if (iap->ia_valid & ATTR_GID) {
996 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
997 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
998 }
999 if (iap->ia_valid & ATTR_ATIME_SET) {
1000 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1001 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1002 *p++ = cpu_to_be32(0);
1003 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1004 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1005 }
1006 else if (iap->ia_valid & ATTR_ATIME) {
1007 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1008 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1009 }
1010 if (iap->ia_valid & ATTR_MTIME_SET) {
1011 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1012 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1013 *p++ = cpu_to_be32(0);
1014 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1015 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1016 }
1017 else if (iap->ia_valid & ATTR_MTIME) {
1018 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1019 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1020 }
1021
1022 /*
1023 * Now we backfill the bitmap and the attribute buffer length.
1024 */
1025 if (len != ((char *)p - (char *)q) + 4) {
1026 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
1027 len, ((char *)p - (char *)q) + 4);
1028 BUG();
1029 }
1030 len = (char *)p - (char *)q - 12;
1031 *q++ = htonl(bmval0);
1032 *q++ = htonl(bmval1);
1033 *q = htonl(len);
1034
1035/* out: */
1036}
1037
1038static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1039{
1040 __be32 *p;
1041
1042 p = reserve_space(xdr, 8);
1043 *p++ = cpu_to_be32(OP_ACCESS);
1044 *p = cpu_to_be32(access);
1045 hdr->nops++;
1046 hdr->replen += decode_access_maxsz;
1047}
1048
1049static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1050{
1051 __be32 *p;
1052
1053 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
1054 *p++ = cpu_to_be32(OP_CLOSE);
1055 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1056 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1057 hdr->nops++;
1058 hdr->replen += decode_close_maxsz;
1059}
1060
1061static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1062{
1063 __be32 *p;
1064
1065 p = reserve_space(xdr, 16);
1066 *p++ = cpu_to_be32(OP_COMMIT);
1067 p = xdr_encode_hyper(p, args->offset);
1068 *p = cpu_to_be32(args->count);
1069 hdr->nops++;
1070 hdr->replen += decode_commit_maxsz;
1071}
1072
1073static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1074{
1075 __be32 *p;
1076
1077 p = reserve_space(xdr, 8);
1078 *p++ = cpu_to_be32(OP_CREATE);
1079 *p = cpu_to_be32(create->ftype);
1080
1081 switch (create->ftype) {
1082 case NF4LNK:
1083 p = reserve_space(xdr, 4);
1084 *p = cpu_to_be32(create->u.symlink.len);
1085 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1086 break;
1087
1088 case NF4BLK: case NF4CHR:
1089 p = reserve_space(xdr, 8);
1090 *p++ = cpu_to_be32(create->u.device.specdata1);
1091 *p = cpu_to_be32(create->u.device.specdata2);
1092 break;
1093
1094 default:
1095 break;
1096 }
1097
1098 encode_string(xdr, create->name->len, create->name->name);
1099 hdr->nops++;
1100 hdr->replen += decode_create_maxsz;
1101
1102 encode_attrs(xdr, create->attrs, create->server);
1103}
1104
1105static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1106{
1107 __be32 *p;
1108
1109 p = reserve_space(xdr, 12);
1110 *p++ = cpu_to_be32(OP_GETATTR);
1111 *p++ = cpu_to_be32(1);
1112 *p = cpu_to_be32(bitmap);
1113 hdr->nops++;
1114 hdr->replen += decode_getattr_maxsz;
1115}
1116
1117static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1118{
1119 __be32 *p;
1120
1121 p = reserve_space(xdr, 16);
1122 *p++ = cpu_to_be32(OP_GETATTR);
1123 *p++ = cpu_to_be32(2);
1124 *p++ = cpu_to_be32(bm0);
1125 *p = cpu_to_be32(bm1);
1126 hdr->nops++;
1127 hdr->replen += decode_getattr_maxsz;
1128}
1129
1130static void
1131encode_getattr_three(struct xdr_stream *xdr,
1132 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1133 struct compound_hdr *hdr)
1134{
1135 __be32 *p;
1136
1137 p = reserve_space(xdr, 4);
1138 *p = cpu_to_be32(OP_GETATTR);
1139 if (bm2) {
1140 p = reserve_space(xdr, 16);
1141 *p++ = cpu_to_be32(3);
1142 *p++ = cpu_to_be32(bm0);
1143 *p++ = cpu_to_be32(bm1);
1144 *p = cpu_to_be32(bm2);
1145 } else if (bm1) {
1146 p = reserve_space(xdr, 12);
1147 *p++ = cpu_to_be32(2);
1148 *p++ = cpu_to_be32(bm0);
1149 *p = cpu_to_be32(bm1);
1150 } else {
1151 p = reserve_space(xdr, 8);
1152 *p++ = cpu_to_be32(1);
1153 *p = cpu_to_be32(bm0);
1154 }
1155 hdr->nops++;
1156 hdr->replen += decode_getattr_maxsz;
1157}
1158
1159static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1160{
1161 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1162 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1163}
1164
1165static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1166{
1167 encode_getattr_three(xdr,
1168 bitmask[0] & nfs4_fsinfo_bitmap[0],
1169 bitmask[1] & nfs4_fsinfo_bitmap[1],
1170 bitmask[2] & nfs4_fsinfo_bitmap[2],
1171 hdr);
1172}
1173
1174static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1175{
1176 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1177 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1178}
1179
1180static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1181{
1182 __be32 *p;
1183
1184 p = reserve_space(xdr, 4);
1185 *p = cpu_to_be32(OP_GETFH);
1186 hdr->nops++;
1187 hdr->replen += decode_getfh_maxsz;
1188}
1189
1190static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1191{
1192 __be32 *p;
1193
1194 p = reserve_space(xdr, 8 + name->len);
1195 *p++ = cpu_to_be32(OP_LINK);
1196 xdr_encode_opaque(p, name->name, name->len);
1197 hdr->nops++;
1198 hdr->replen += decode_link_maxsz;
1199}
1200
1201static inline int nfs4_lock_type(struct file_lock *fl, int block)
1202{
1203 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1204 return block ? NFS4_READW_LT : NFS4_READ_LT;
1205 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1206}
1207
1208static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1209{
1210 if (fl->fl_end == OFFSET_MAX)
1211 return ~(uint64_t)0;
1212 return fl->fl_end - fl->fl_start + 1;
1213}
1214
1215static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1216{
1217 __be32 *p;
1218
1219 p = reserve_space(xdr, 32);
1220 p = xdr_encode_hyper(p, lowner->clientid);
1221 *p++ = cpu_to_be32(20);
1222 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1223 *p++ = cpu_to_be32(lowner->s_dev);
1224 xdr_encode_hyper(p, lowner->id);
1225}
1226
1227/*
1228 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1229 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1230 */
1231static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1232{
1233 __be32 *p;
1234
1235 p = reserve_space(xdr, 32);
1236 *p++ = cpu_to_be32(OP_LOCK);
1237 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1238 *p++ = cpu_to_be32(args->reclaim);
1239 p = xdr_encode_hyper(p, args->fl->fl_start);
1240 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1241 *p = cpu_to_be32(args->new_lock_owner);
1242 if (args->new_lock_owner){
1243 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1244 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1245 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1246 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1247 encode_lockowner(xdr, &args->lock_owner);
1248 }
1249 else {
1250 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1251 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1252 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1253 }
1254 hdr->nops++;
1255 hdr->replen += decode_lock_maxsz;
1256}
1257
1258static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1259{
1260 __be32 *p;
1261
1262 p = reserve_space(xdr, 24);
1263 *p++ = cpu_to_be32(OP_LOCKT);
1264 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1265 p = xdr_encode_hyper(p, args->fl->fl_start);
1266 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1267 encode_lockowner(xdr, &args->lock_owner);
1268 hdr->nops++;
1269 hdr->replen += decode_lockt_maxsz;
1270}
1271
1272static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1273{
1274 __be32 *p;
1275
1276 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1277 *p++ = cpu_to_be32(OP_LOCKU);
1278 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1279 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1280 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1281 p = xdr_encode_hyper(p, args->fl->fl_start);
1282 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1283 hdr->nops++;
1284 hdr->replen += decode_locku_maxsz;
1285}
1286
1287static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1288{
1289 __be32 *p;
1290
1291 p = reserve_space(xdr, 4);
1292 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1293 encode_lockowner(xdr, lowner);
1294 hdr->nops++;
1295 hdr->replen += decode_release_lockowner_maxsz;
1296}
1297
1298static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1299{
1300 int len = name->len;
1301 __be32 *p;
1302
1303 p = reserve_space(xdr, 8 + len);
1304 *p++ = cpu_to_be32(OP_LOOKUP);
1305 xdr_encode_opaque(p, name->name, len);
1306 hdr->nops++;
1307 hdr->replen += decode_lookup_maxsz;
1308}
1309
1310static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1311{
1312 __be32 *p;
1313
1314 p = reserve_space(xdr, 8);
1315 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1316 case FMODE_READ:
1317 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1318 break;
1319 case FMODE_WRITE:
1320 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1321 break;
1322 case FMODE_READ|FMODE_WRITE:
1323 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1324 break;
1325 default:
1326 *p++ = cpu_to_be32(0);
1327 }
1328 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1329}
1330
1331static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1332{
1333 __be32 *p;
1334 /*
1335 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1336 * owner 4 = 32
1337 */
1338 p = reserve_space(xdr, 8);
1339 *p++ = cpu_to_be32(OP_OPEN);
1340 *p = cpu_to_be32(arg->seqid->sequence->counter);
1341 encode_share_access(xdr, arg->fmode);
1342 p = reserve_space(xdr, 32);
1343 p = xdr_encode_hyper(p, arg->clientid);
1344 *p++ = cpu_to_be32(20);
1345 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1346 *p++ = cpu_to_be32(arg->server->s_dev);
1347 xdr_encode_hyper(p, arg->id);
1348}
1349
1350static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1351{
1352 __be32 *p;
1353 struct nfs_client *clp;
1354
1355 p = reserve_space(xdr, 4);
1356 switch(arg->open_flags & O_EXCL) {
1357 case 0:
1358 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1359 encode_attrs(xdr, arg->u.attrs, arg->server);
1360 break;
1361 default:
1362 clp = arg->server->nfs_client;
1363 if (clp->cl_mvops->minor_version > 0) {
1364 if (nfs4_has_persistent_session(clp)) {
1365 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1366 encode_attrs(xdr, arg->u.attrs, arg->server);
1367 } else {
1368 struct iattr dummy;
1369
1370 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1371 encode_nfs4_verifier(xdr, &arg->u.verifier);
1372 dummy.ia_valid = 0;
1373 encode_attrs(xdr, &dummy, arg->server);
1374 }
1375 } else {
1376 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1377 encode_nfs4_verifier(xdr, &arg->u.verifier);
1378 }
1379 }
1380}
1381
1382static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1383{
1384 __be32 *p;
1385
1386 p = reserve_space(xdr, 4);
1387 switch (arg->open_flags & O_CREAT) {
1388 case 0:
1389 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1390 break;
1391 default:
1392 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1393 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1394 encode_createmode(xdr, arg);
1395 }
1396}
1397
1398static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1399{
1400 __be32 *p;
1401
1402 p = reserve_space(xdr, 4);
1403 switch (delegation_type) {
1404 case 0:
1405 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1406 break;
1407 case FMODE_READ:
1408 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1409 break;
1410 case FMODE_WRITE|FMODE_READ:
1411 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1412 break;
1413 default:
1414 BUG();
1415 }
1416}
1417
1418static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1419{
1420 __be32 *p;
1421
1422 p = reserve_space(xdr, 4);
1423 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1424 encode_string(xdr, name->len, name->name);
1425}
1426
1427static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1428{
1429 __be32 *p;
1430
1431 p = reserve_space(xdr, 4);
1432 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1433 encode_delegation_type(xdr, type);
1434}
1435
1436static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1437{
1438 __be32 *p;
1439
1440 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1441 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1442 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1443 encode_string(xdr, name->len, name->name);
1444}
1445
1446static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1447{
1448 encode_openhdr(xdr, arg);
1449 encode_opentype(xdr, arg);
1450 switch (arg->claim) {
1451 case NFS4_OPEN_CLAIM_NULL:
1452 encode_claim_null(xdr, arg->name);
1453 break;
1454 case NFS4_OPEN_CLAIM_PREVIOUS:
1455 encode_claim_previous(xdr, arg->u.delegation_type);
1456 break;
1457 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1458 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1459 break;
1460 default:
1461 BUG();
1462 }
1463 hdr->nops++;
1464 hdr->replen += decode_open_maxsz;
1465}
1466
1467static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1468{
1469 __be32 *p;
1470
1471 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1472 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1473 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1474 *p = cpu_to_be32(arg->seqid->sequence->counter);
1475 hdr->nops++;
1476 hdr->replen += decode_open_confirm_maxsz;
1477}
1478
1479static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1480{
1481 __be32 *p;
1482
1483 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1484 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1485 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1486 *p = cpu_to_be32(arg->seqid->sequence->counter);
1487 encode_share_access(xdr, arg->fmode);
1488 hdr->nops++;
1489 hdr->replen += decode_open_downgrade_maxsz;
1490}
1491
1492static void
1493encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1494{
1495 int len = fh->size;
1496 __be32 *p;
1497
1498 p = reserve_space(xdr, 8 + len);
1499 *p++ = cpu_to_be32(OP_PUTFH);
1500 xdr_encode_opaque(p, fh->data, len);
1501 hdr->nops++;
1502 hdr->replen += decode_putfh_maxsz;
1503}
1504
1505static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1506{
1507 __be32 *p;
1508
1509 p = reserve_space(xdr, 4);
1510 *p = cpu_to_be32(OP_PUTROOTFH);
1511 hdr->nops++;
1512 hdr->replen += decode_putrootfh_maxsz;
1513}
1514
1515static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid)
1516{
1517 nfs4_stateid stateid;
1518 __be32 *p;
1519
1520 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1521 if (ctx->state != NULL) {
1522 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
1523 if (zero_seqid)
1524 stateid.stateid.seqid = 0;
1525 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1526 } else
1527 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1528}
1529
1530static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1531{
1532 __be32 *p;
1533
1534 p = reserve_space(xdr, 4);
1535 *p = cpu_to_be32(OP_READ);
1536
1537 encode_stateid(xdr, args->context, args->lock_context,
1538 hdr->minorversion);
1539
1540 p = reserve_space(xdr, 12);
1541 p = xdr_encode_hyper(p, args->offset);
1542 *p = cpu_to_be32(args->count);
1543 hdr->nops++;
1544 hdr->replen += decode_read_maxsz;
1545}
1546
1547static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1548{
1549 uint32_t attrs[2] = {
1550 FATTR4_WORD0_RDATTR_ERROR,
1551 FATTR4_WORD1_MOUNTED_ON_FILEID,
1552 };
1553 uint32_t dircount = readdir->count >> 1;
1554 __be32 *p;
1555
1556 if (readdir->plus) {
1557 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1558 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1559 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1560 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1561 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1562 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1563 dircount >>= 1;
1564 }
1565 /* Use mounted_on_fileid only if the server supports it */
1566 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1567 attrs[0] |= FATTR4_WORD0_FILEID;
1568
1569 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1570 *p++ = cpu_to_be32(OP_READDIR);
1571 p = xdr_encode_hyper(p, readdir->cookie);
1572 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1573 *p++ = cpu_to_be32(dircount);
1574 *p++ = cpu_to_be32(readdir->count);
1575 *p++ = cpu_to_be32(2);
1576
1577 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1578 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1579 hdr->nops++;
1580 hdr->replen += decode_readdir_maxsz;
1581 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1582 __func__,
1583 (unsigned long long)readdir->cookie,
1584 ((u32 *)readdir->verifier.data)[0],
1585 ((u32 *)readdir->verifier.data)[1],
1586 attrs[0] & readdir->bitmask[0],
1587 attrs[1] & readdir->bitmask[1]);
1588}
1589
1590static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1591{
1592 __be32 *p;
1593
1594 p = reserve_space(xdr, 4);
1595 *p = cpu_to_be32(OP_READLINK);
1596 hdr->nops++;
1597 hdr->replen += decode_readlink_maxsz;
1598}
1599
1600static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1601{
1602 __be32 *p;
1603
1604 p = reserve_space(xdr, 8 + name->len);
1605 *p++ = cpu_to_be32(OP_REMOVE);
1606 xdr_encode_opaque(p, name->name, name->len);
1607 hdr->nops++;
1608 hdr->replen += decode_remove_maxsz;
1609}
1610
1611static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1612{
1613 __be32 *p;
1614
1615 p = reserve_space(xdr, 4);
1616 *p = cpu_to_be32(OP_RENAME);
1617 encode_string(xdr, oldname->len, oldname->name);
1618 encode_string(xdr, newname->len, newname->name);
1619 hdr->nops++;
1620 hdr->replen += decode_rename_maxsz;
1621}
1622
1623static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1624{
1625 __be32 *p;
1626
1627 p = reserve_space(xdr, 12);
1628 *p++ = cpu_to_be32(OP_RENEW);
1629 xdr_encode_hyper(p, client_stateid->cl_clientid);
1630 hdr->nops++;
1631 hdr->replen += decode_renew_maxsz;
1632}
1633
1634static void
1635encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1636{
1637 __be32 *p;
1638
1639 p = reserve_space(xdr, 4);
1640 *p = cpu_to_be32(OP_RESTOREFH);
1641 hdr->nops++;
1642 hdr->replen += decode_restorefh_maxsz;
1643}
1644
1645static void
1646encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1647{
1648 __be32 *p;
1649
1650 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1651 *p++ = cpu_to_be32(OP_SETATTR);
1652 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1653 p = reserve_space(xdr, 2*4);
1654 *p++ = cpu_to_be32(1);
1655 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1656 BUG_ON(arg->acl_len % 4);
1657 p = reserve_space(xdr, 4);
1658 *p = cpu_to_be32(arg->acl_len);
1659 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1660 hdr->nops++;
1661 hdr->replen += decode_setacl_maxsz;
1662}
1663
1664static void
1665encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1666{
1667 __be32 *p;
1668
1669 p = reserve_space(xdr, 4);
1670 *p = cpu_to_be32(OP_SAVEFH);
1671 hdr->nops++;
1672 hdr->replen += decode_savefh_maxsz;
1673}
1674
1675static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1676{
1677 __be32 *p;
1678
1679 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1680 *p++ = cpu_to_be32(OP_SETATTR);
1681 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1682 hdr->nops++;
1683 hdr->replen += decode_setattr_maxsz;
1684 encode_attrs(xdr, arg->iap, server);
1685}
1686
1687static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1688{
1689 __be32 *p;
1690
1691 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1692 *p++ = cpu_to_be32(OP_SETCLIENTID);
1693 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1694
1695 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1696 p = reserve_space(xdr, 4);
1697 *p = cpu_to_be32(setclientid->sc_prog);
1698 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1699 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1700 p = reserve_space(xdr, 4);
1701 *p = cpu_to_be32(setclientid->sc_cb_ident);
1702 hdr->nops++;
1703 hdr->replen += decode_setclientid_maxsz;
1704}
1705
1706static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1707{
1708 __be32 *p;
1709
1710 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1711 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1712 p = xdr_encode_hyper(p, arg->clientid);
1713 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
1714 hdr->nops++;
1715 hdr->replen += decode_setclientid_confirm_maxsz;
1716}
1717
1718static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1719{
1720 __be32 *p;
1721
1722 p = reserve_space(xdr, 4);
1723 *p = cpu_to_be32(OP_WRITE);
1724
1725 encode_stateid(xdr, args->context, args->lock_context,
1726 hdr->minorversion);
1727
1728 p = reserve_space(xdr, 16);
1729 p = xdr_encode_hyper(p, args->offset);
1730 *p++ = cpu_to_be32(args->stable);
1731 *p = cpu_to_be32(args->count);
1732
1733 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1734 hdr->nops++;
1735 hdr->replen += decode_write_maxsz;
1736}
1737
1738static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1739{
1740 __be32 *p;
1741
1742 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1743
1744 *p++ = cpu_to_be32(OP_DELEGRETURN);
1745 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1746 hdr->nops++;
1747 hdr->replen += decode_delegreturn_maxsz;
1748}
1749
1750static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1751{
1752 int len = name->len;
1753 __be32 *p;
1754
1755 p = reserve_space(xdr, 8 + len);
1756 *p++ = cpu_to_be32(OP_SECINFO);
1757 xdr_encode_opaque(p, name->name, len);
1758 hdr->nops++;
1759 hdr->replen += decode_secinfo_maxsz;
1760}
1761
1762#if defined(CONFIG_NFS_V4_1)
1763/* NFSv4.1 operations */
1764static void encode_exchange_id(struct xdr_stream *xdr,
1765 struct nfs41_exchange_id_args *args,
1766 struct compound_hdr *hdr)
1767{
1768 __be32 *p;
1769
1770 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1771 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1772 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1773
1774 encode_string(xdr, args->id_len, args->id);
1775
1776 p = reserve_space(xdr, 12);
1777 *p++ = cpu_to_be32(args->flags);
1778 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1779 *p = cpu_to_be32(0); /* zero length implementation id array */
1780 hdr->nops++;
1781 hdr->replen += decode_exchange_id_maxsz;
1782}
1783
1784static void encode_create_session(struct xdr_stream *xdr,
1785 struct nfs41_create_session_args *args,
1786 struct compound_hdr *hdr)
1787{
1788 __be32 *p;
1789 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1790 uint32_t len;
1791 struct nfs_client *clp = args->client;
1792 u32 max_resp_sz_cached;
1793
1794 /*
1795 * Assumes OPEN is the biggest non-idempotent compound.
1796 * 2 is the verifier.
1797 */
1798 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1799 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1800
1801 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1802 clp->cl_ipaddr);
1803
1804 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1805 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1806 p = xdr_encode_hyper(p, clp->cl_clientid);
1807 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1808 *p++ = cpu_to_be32(args->flags); /*flags */
1809
1810 /* Fore Channel */
1811 *p++ = cpu_to_be32(0); /* header padding size */
1812 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1813 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1814 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1815 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1816 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1817 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1818
1819 /* Back Channel */
1820 *p++ = cpu_to_be32(0); /* header padding size */
1821 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1822 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1823 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1824 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1825 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1826 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1827
1828 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1829 *p++ = cpu_to_be32(1);
1830 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1831
1832 /* authsys_parms rfc1831 */
1833 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1834 p = xdr_encode_opaque(p, machine_name, len);
1835 *p++ = cpu_to_be32(0); /* UID */
1836 *p++ = cpu_to_be32(0); /* GID */
1837 *p = cpu_to_be32(0); /* No more gids */
1838 hdr->nops++;
1839 hdr->replen += decode_create_session_maxsz;
1840}
1841
1842static void encode_destroy_session(struct xdr_stream *xdr,
1843 struct nfs4_session *session,
1844 struct compound_hdr *hdr)
1845{
1846 __be32 *p;
1847 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1848 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1849 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1850 hdr->nops++;
1851 hdr->replen += decode_destroy_session_maxsz;
1852}
1853
1854static void encode_reclaim_complete(struct xdr_stream *xdr,
1855 struct nfs41_reclaim_complete_args *args,
1856 struct compound_hdr *hdr)
1857{
1858 __be32 *p;
1859
1860 p = reserve_space(xdr, 8);
1861 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1862 *p++ = cpu_to_be32(args->one_fs);
1863 hdr->nops++;
1864 hdr->replen += decode_reclaim_complete_maxsz;
1865}
1866#endif /* CONFIG_NFS_V4_1 */
1867
1868static void encode_sequence(struct xdr_stream *xdr,
1869 const struct nfs4_sequence_args *args,
1870 struct compound_hdr *hdr)
1871{
1872#if defined(CONFIG_NFS_V4_1)
1873 struct nfs4_session *session = args->sa_session;
1874 struct nfs4_slot_table *tp;
1875 struct nfs4_slot *slot;
1876 __be32 *p;
1877
1878 if (!session)
1879 return;
1880
1881 tp = &session->fc_slot_table;
1882
1883 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1884 slot = tp->slots + args->sa_slotid;
1885
1886 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1887 *p++ = cpu_to_be32(OP_SEQUENCE);
1888
1889 /*
1890 * Sessionid + seqid + slotid + max slotid + cache_this
1891 */
1892 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1893 "max_slotid=%d cache_this=%d\n",
1894 __func__,
1895 ((u32 *)session->sess_id.data)[0],
1896 ((u32 *)session->sess_id.data)[1],
1897 ((u32 *)session->sess_id.data)[2],
1898 ((u32 *)session->sess_id.data)[3],
1899 slot->seq_nr, args->sa_slotid,
1900 tp->highest_used_slotid, args->sa_cache_this);
1901 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1902 *p++ = cpu_to_be32(slot->seq_nr);
1903 *p++ = cpu_to_be32(args->sa_slotid);
1904 *p++ = cpu_to_be32(tp->highest_used_slotid);
1905 *p = cpu_to_be32(args->sa_cache_this);
1906 hdr->nops++;
1907 hdr->replen += decode_sequence_maxsz;
1908#endif /* CONFIG_NFS_V4_1 */
1909}
1910
1911#ifdef CONFIG_NFS_V4_1
1912static void
1913encode_getdevicelist(struct xdr_stream *xdr,
1914 const struct nfs4_getdevicelist_args *args,
1915 struct compound_hdr *hdr)
1916{
1917 __be32 *p;
1918 nfs4_verifier dummy = {
1919 .data = "dummmmmy",
1920 };
1921
1922 p = reserve_space(xdr, 20);
1923 *p++ = cpu_to_be32(OP_GETDEVICELIST);
1924 *p++ = cpu_to_be32(args->layoutclass);
1925 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1926 xdr_encode_hyper(p, 0ULL); /* cookie */
1927 encode_nfs4_verifier(xdr, &dummy);
1928 hdr->nops++;
1929 hdr->replen += decode_getdevicelist_maxsz;
1930}
1931
1932static void
1933encode_getdeviceinfo(struct xdr_stream *xdr,
1934 const struct nfs4_getdeviceinfo_args *args,
1935 struct compound_hdr *hdr)
1936{
1937 __be32 *p;
1938
1939 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE);
1940 *p++ = cpu_to_be32(OP_GETDEVICEINFO);
1941 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1942 NFS4_DEVICEID4_SIZE);
1943 *p++ = cpu_to_be32(args->pdev->layout_type);
1944 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1945 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1946 hdr->nops++;
1947 hdr->replen += decode_getdeviceinfo_maxsz;
1948}
1949
1950static void
1951encode_layoutget(struct xdr_stream *xdr,
1952 const struct nfs4_layoutget_args *args,
1953 struct compound_hdr *hdr)
1954{
1955 __be32 *p;
1956
1957 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1958 *p++ = cpu_to_be32(OP_LAYOUTGET);
1959 *p++ = cpu_to_be32(0); /* Signal layout available */
1960 *p++ = cpu_to_be32(args->type);
1961 *p++ = cpu_to_be32(args->range.iomode);
1962 p = xdr_encode_hyper(p, args->range.offset);
1963 p = xdr_encode_hyper(p, args->range.length);
1964 p = xdr_encode_hyper(p, args->minlength);
1965 p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
1966 *p = cpu_to_be32(args->maxcount);
1967
1968 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1969 __func__,
1970 args->type,
1971 args->range.iomode,
1972 (unsigned long)args->range.offset,
1973 (unsigned long)args->range.length,
1974 args->maxcount);
1975 hdr->nops++;
1976 hdr->replen += decode_layoutget_maxsz;
1977}
1978
1979static int
1980encode_layoutcommit(struct xdr_stream *xdr,
1981 struct inode *inode,
1982 const struct nfs4_layoutcommit_args *args,
1983 struct compound_hdr *hdr)
1984{
1985 __be32 *p;
1986
1987 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1988 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1989
1990 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1991 *p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
1992 /* Only whole file layouts */
1993 p = xdr_encode_hyper(p, 0); /* offset */
1994 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1995 *p++ = cpu_to_be32(0); /* reclaim */
1996 p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE);
1997 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1998 p = xdr_encode_hyper(p, args->lastbytewritten);
1999 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2000 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2001
2002 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
2003 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
2004 NFS_I(inode)->layout, xdr, args);
2005 else {
2006 p = reserve_space(xdr, 4);
2007 *p = cpu_to_be32(0); /* no layout-type payload */
2008 }
2009
2010 hdr->nops++;
2011 hdr->replen += decode_layoutcommit_maxsz;
2012 return 0;
2013}
2014
2015static void
2016encode_layoutreturn(struct xdr_stream *xdr,
2017 const struct nfs4_layoutreturn_args *args,
2018 struct compound_hdr *hdr)
2019{
2020 __be32 *p;
2021
2022 p = reserve_space(xdr, 20);
2023 *p++ = cpu_to_be32(OP_LAYOUTRETURN);
2024 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2025 *p++ = cpu_to_be32(args->layout_type);
2026 *p++ = cpu_to_be32(IOMODE_ANY);
2027 *p = cpu_to_be32(RETURN_FILE);
2028 p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE);
2029 p = xdr_encode_hyper(p, 0);
2030 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
2031 spin_lock(&args->inode->i_lock);
2032 xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
2033 spin_unlock(&args->inode->i_lock);
2034 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2035 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2036 NFS_I(args->inode)->layout, xdr, args);
2037 } else {
2038 p = reserve_space(xdr, 4);
2039 *p = cpu_to_be32(0);
2040 }
2041 hdr->nops++;
2042 hdr->replen += decode_layoutreturn_maxsz;
2043}
2044
2045static int
2046encode_secinfo_no_name(struct xdr_stream *xdr,
2047 const struct nfs41_secinfo_no_name_args *args,
2048 struct compound_hdr *hdr)
2049{
2050 __be32 *p;
2051 p = reserve_space(xdr, 8);
2052 *p++ = cpu_to_be32(OP_SECINFO_NO_NAME);
2053 *p++ = cpu_to_be32(args->style);
2054 hdr->nops++;
2055 hdr->replen += decode_secinfo_no_name_maxsz;
2056 return 0;
2057}
2058
2059static void encode_test_stateid(struct xdr_stream *xdr,
2060 struct nfs41_test_stateid_args *args,
2061 struct compound_hdr *hdr)
2062{
2063 __be32 *p;
2064
2065 p = reserve_space(xdr, 8 + NFS4_STATEID_SIZE);
2066 *p++ = cpu_to_be32(OP_TEST_STATEID);
2067 *p++ = cpu_to_be32(1);
2068 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
2069 hdr->nops++;
2070 hdr->replen += decode_test_stateid_maxsz;
2071}
2072
2073static void encode_free_stateid(struct xdr_stream *xdr,
2074 struct nfs41_free_stateid_args *args,
2075 struct compound_hdr *hdr)
2076{
2077 __be32 *p;
2078 p = reserve_space(xdr, 4 + NFS4_STATEID_SIZE);
2079 *p++ = cpu_to_be32(OP_FREE_STATEID);
2080 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
2081 hdr->nops++;
2082 hdr->replen += decode_free_stateid_maxsz;
2083}
2084#endif /* CONFIG_NFS_V4_1 */
2085
2086/*
2087 * END OF "GENERIC" ENCODE ROUTINES.
2088 */
2089
2090static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2091{
2092#if defined(CONFIG_NFS_V4_1)
2093 if (args->sa_session)
2094 return args->sa_session->clp->cl_mvops->minor_version;
2095#endif /* CONFIG_NFS_V4_1 */
2096 return 0;
2097}
2098
2099/*
2100 * Encode an ACCESS request
2101 */
2102static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2103 const struct nfs4_accessargs *args)
2104{
2105 struct compound_hdr hdr = {
2106 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2107 };
2108
2109 encode_compound_hdr(xdr, req, &hdr);
2110 encode_sequence(xdr, &args->seq_args, &hdr);
2111 encode_putfh(xdr, args->fh, &hdr);
2112 encode_access(xdr, args->access, &hdr);
2113 encode_getfattr(xdr, args->bitmask, &hdr);
2114 encode_nops(&hdr);
2115}
2116
2117/*
2118 * Encode LOOKUP request
2119 */
2120static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2121 const struct nfs4_lookup_arg *args)
2122{
2123 struct compound_hdr hdr = {
2124 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2125 };
2126
2127 encode_compound_hdr(xdr, req, &hdr);
2128 encode_sequence(xdr, &args->seq_args, &hdr);
2129 encode_putfh(xdr, args->dir_fh, &hdr);
2130 encode_lookup(xdr, args->name, &hdr);
2131 encode_getfh(xdr, &hdr);
2132 encode_getfattr(xdr, args->bitmask, &hdr);
2133 encode_nops(&hdr);
2134}
2135
2136/*
2137 * Encode LOOKUP_ROOT request
2138 */
2139static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2140 struct xdr_stream *xdr,
2141 const struct nfs4_lookup_root_arg *args)
2142{
2143 struct compound_hdr hdr = {
2144 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2145 };
2146
2147 encode_compound_hdr(xdr, req, &hdr);
2148 encode_sequence(xdr, &args->seq_args, &hdr);
2149 encode_putrootfh(xdr, &hdr);
2150 encode_getfh(xdr, &hdr);
2151 encode_getfattr(xdr, args->bitmask, &hdr);
2152 encode_nops(&hdr);
2153}
2154
2155/*
2156 * Encode REMOVE request
2157 */
2158static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2159 const struct nfs_removeargs *args)
2160{
2161 struct compound_hdr hdr = {
2162 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2163 };
2164
2165 encode_compound_hdr(xdr, req, &hdr);
2166 encode_sequence(xdr, &args->seq_args, &hdr);
2167 encode_putfh(xdr, args->fh, &hdr);
2168 encode_remove(xdr, &args->name, &hdr);
2169 encode_getfattr(xdr, args->bitmask, &hdr);
2170 encode_nops(&hdr);
2171}
2172
2173/*
2174 * Encode RENAME request
2175 */
2176static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2177 const struct nfs_renameargs *args)
2178{
2179 struct compound_hdr hdr = {
2180 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2181 };
2182
2183 encode_compound_hdr(xdr, req, &hdr);
2184 encode_sequence(xdr, &args->seq_args, &hdr);
2185 encode_putfh(xdr, args->old_dir, &hdr);
2186 encode_savefh(xdr, &hdr);
2187 encode_putfh(xdr, args->new_dir, &hdr);
2188 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2189 encode_getfattr(xdr, args->bitmask, &hdr);
2190 encode_restorefh(xdr, &hdr);
2191 encode_getfattr(xdr, args->bitmask, &hdr);
2192 encode_nops(&hdr);
2193}
2194
2195/*
2196 * Encode LINK request
2197 */
2198static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2199 const struct nfs4_link_arg *args)
2200{
2201 struct compound_hdr hdr = {
2202 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2203 };
2204
2205 encode_compound_hdr(xdr, req, &hdr);
2206 encode_sequence(xdr, &args->seq_args, &hdr);
2207 encode_putfh(xdr, args->fh, &hdr);
2208 encode_savefh(xdr, &hdr);
2209 encode_putfh(xdr, args->dir_fh, &hdr);
2210 encode_link(xdr, args->name, &hdr);
2211 encode_getfattr(xdr, args->bitmask, &hdr);
2212 encode_restorefh(xdr, &hdr);
2213 encode_getfattr(xdr, args->bitmask, &hdr);
2214 encode_nops(&hdr);
2215}
2216
2217/*
2218 * Encode CREATE request
2219 */
2220static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2221 const struct nfs4_create_arg *args)
2222{
2223 struct compound_hdr hdr = {
2224 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2225 };
2226
2227 encode_compound_hdr(xdr, req, &hdr);
2228 encode_sequence(xdr, &args->seq_args, &hdr);
2229 encode_putfh(xdr, args->dir_fh, &hdr);
2230 encode_savefh(xdr, &hdr);
2231 encode_create(xdr, args, &hdr);
2232 encode_getfh(xdr, &hdr);
2233 encode_getfattr(xdr, args->bitmask, &hdr);
2234 encode_restorefh(xdr, &hdr);
2235 encode_getfattr(xdr, args->bitmask, &hdr);
2236 encode_nops(&hdr);
2237}
2238
2239/*
2240 * Encode SYMLINK request
2241 */
2242static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2243 const struct nfs4_create_arg *args)
2244{
2245 nfs4_xdr_enc_create(req, xdr, args);
2246}
2247
2248/*
2249 * Encode GETATTR request
2250 */
2251static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2252 const struct nfs4_getattr_arg *args)
2253{
2254 struct compound_hdr hdr = {
2255 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2256 };
2257
2258 encode_compound_hdr(xdr, req, &hdr);
2259 encode_sequence(xdr, &args->seq_args, &hdr);
2260 encode_putfh(xdr, args->fh, &hdr);
2261 encode_getfattr(xdr, args->bitmask, &hdr);
2262 encode_nops(&hdr);
2263}
2264
2265/*
2266 * Encode a CLOSE request
2267 */
2268static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2269 struct nfs_closeargs *args)
2270{
2271 struct compound_hdr hdr = {
2272 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2273 };
2274
2275 encode_compound_hdr(xdr, req, &hdr);
2276 encode_sequence(xdr, &args->seq_args, &hdr);
2277 encode_putfh(xdr, args->fh, &hdr);
2278 encode_close(xdr, args, &hdr);
2279 encode_getfattr(xdr, args->bitmask, &hdr);
2280 encode_nops(&hdr);
2281}
2282
2283/*
2284 * Encode an OPEN request
2285 */
2286static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2287 struct nfs_openargs *args)
2288{
2289 struct compound_hdr hdr = {
2290 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2291 };
2292
2293 encode_compound_hdr(xdr, req, &hdr);
2294 encode_sequence(xdr, &args->seq_args, &hdr);
2295 encode_putfh(xdr, args->fh, &hdr);
2296 encode_savefh(xdr, &hdr);
2297 encode_open(xdr, args, &hdr);
2298 encode_getfh(xdr, &hdr);
2299 encode_getfattr(xdr, args->bitmask, &hdr);
2300 encode_restorefh(xdr, &hdr);
2301 encode_getfattr(xdr, args->bitmask, &hdr);
2302 encode_nops(&hdr);
2303}
2304
2305/*
2306 * Encode an OPEN_CONFIRM request
2307 */
2308static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2309 struct xdr_stream *xdr,
2310 struct nfs_open_confirmargs *args)
2311{
2312 struct compound_hdr hdr = {
2313 .nops = 0,
2314 };
2315
2316 encode_compound_hdr(xdr, req, &hdr);
2317 encode_putfh(xdr, args->fh, &hdr);
2318 encode_open_confirm(xdr, args, &hdr);
2319 encode_nops(&hdr);
2320}
2321
2322/*
2323 * Encode an OPEN request with no attributes.
2324 */
2325static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2326 struct xdr_stream *xdr,
2327 struct nfs_openargs *args)
2328{
2329 struct compound_hdr hdr = {
2330 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2331 };
2332
2333 encode_compound_hdr(xdr, req, &hdr);
2334 encode_sequence(xdr, &args->seq_args, &hdr);
2335 encode_putfh(xdr, args->fh, &hdr);
2336 encode_open(xdr, args, &hdr);
2337 encode_getfattr(xdr, args->bitmask, &hdr);
2338 encode_nops(&hdr);
2339}
2340
2341/*
2342 * Encode an OPEN_DOWNGRADE request
2343 */
2344static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2345 struct xdr_stream *xdr,
2346 struct nfs_closeargs *args)
2347{
2348 struct compound_hdr hdr = {
2349 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2350 };
2351
2352 encode_compound_hdr(xdr, req, &hdr);
2353 encode_sequence(xdr, &args->seq_args, &hdr);
2354 encode_putfh(xdr, args->fh, &hdr);
2355 encode_open_downgrade(xdr, args, &hdr);
2356 encode_getfattr(xdr, args->bitmask, &hdr);
2357 encode_nops(&hdr);
2358}
2359
2360/*
2361 * Encode a LOCK request
2362 */
2363static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2364 struct nfs_lock_args *args)
2365{
2366 struct compound_hdr hdr = {
2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2368 };
2369
2370 encode_compound_hdr(xdr, req, &hdr);
2371 encode_sequence(xdr, &args->seq_args, &hdr);
2372 encode_putfh(xdr, args->fh, &hdr);
2373 encode_lock(xdr, args, &hdr);
2374 encode_nops(&hdr);
2375}
2376
2377/*
2378 * Encode a LOCKT request
2379 */
2380static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2381 struct nfs_lockt_args *args)
2382{
2383 struct compound_hdr hdr = {
2384 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2385 };
2386
2387 encode_compound_hdr(xdr, req, &hdr);
2388 encode_sequence(xdr, &args->seq_args, &hdr);
2389 encode_putfh(xdr, args->fh, &hdr);
2390 encode_lockt(xdr, args, &hdr);
2391 encode_nops(&hdr);
2392}
2393
2394/*
2395 * Encode a LOCKU request
2396 */
2397static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2398 struct nfs_locku_args *args)
2399{
2400 struct compound_hdr hdr = {
2401 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2402 };
2403
2404 encode_compound_hdr(xdr, req, &hdr);
2405 encode_sequence(xdr, &args->seq_args, &hdr);
2406 encode_putfh(xdr, args->fh, &hdr);
2407 encode_locku(xdr, args, &hdr);
2408 encode_nops(&hdr);
2409}
2410
2411static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2412 struct xdr_stream *xdr,
2413 struct nfs_release_lockowner_args *args)
2414{
2415 struct compound_hdr hdr = {
2416 .minorversion = 0,
2417 };
2418
2419 encode_compound_hdr(xdr, req, &hdr);
2420 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2421 encode_nops(&hdr);
2422}
2423
2424/*
2425 * Encode a READLINK request
2426 */
2427static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2428 const struct nfs4_readlink *args)
2429{
2430 struct compound_hdr hdr = {
2431 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2432 };
2433
2434 encode_compound_hdr(xdr, req, &hdr);
2435 encode_sequence(xdr, &args->seq_args, &hdr);
2436 encode_putfh(xdr, args->fh, &hdr);
2437 encode_readlink(xdr, args, req, &hdr);
2438
2439 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2440 args->pgbase, args->pglen);
2441 encode_nops(&hdr);
2442}
2443
2444/*
2445 * Encode a READDIR request
2446 */
2447static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2448 const struct nfs4_readdir_arg *args)
2449{
2450 struct compound_hdr hdr = {
2451 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2452 };
2453
2454 encode_compound_hdr(xdr, req, &hdr);
2455 encode_sequence(xdr, &args->seq_args, &hdr);
2456 encode_putfh(xdr, args->fh, &hdr);
2457 encode_readdir(xdr, args, req, &hdr);
2458
2459 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2460 args->pgbase, args->count);
2461 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2462 __func__, hdr.replen << 2, args->pages,
2463 args->pgbase, args->count);
2464 encode_nops(&hdr);
2465}
2466
2467/*
2468 * Encode a READ request
2469 */
2470static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2471 struct nfs_readargs *args)
2472{
2473 struct compound_hdr hdr = {
2474 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2475 };
2476
2477 encode_compound_hdr(xdr, req, &hdr);
2478 encode_sequence(xdr, &args->seq_args, &hdr);
2479 encode_putfh(xdr, args->fh, &hdr);
2480 encode_read(xdr, args, &hdr);
2481
2482 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2483 args->pages, args->pgbase, args->count);
2484 req->rq_rcv_buf.flags |= XDRBUF_READ;
2485 encode_nops(&hdr);
2486}
2487
2488/*
2489 * Encode an SETATTR request
2490 */
2491static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2492 struct nfs_setattrargs *args)
2493{
2494 struct compound_hdr hdr = {
2495 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2496 };
2497
2498 encode_compound_hdr(xdr, req, &hdr);
2499 encode_sequence(xdr, &args->seq_args, &hdr);
2500 encode_putfh(xdr, args->fh, &hdr);
2501 encode_setattr(xdr, args, args->server, &hdr);
2502 encode_getfattr(xdr, args->bitmask, &hdr);
2503 encode_nops(&hdr);
2504}
2505
2506/*
2507 * Encode a GETACL request
2508 */
2509static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2510 struct nfs_getaclargs *args)
2511{
2512 struct compound_hdr hdr = {
2513 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2514 };
2515 uint32_t replen;
2516
2517 encode_compound_hdr(xdr, req, &hdr);
2518 encode_sequence(xdr, &args->seq_args, &hdr);
2519 encode_putfh(xdr, args->fh, &hdr);
2520 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2521 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2522
2523 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2524 args->acl_pages, args->acl_pgbase, args->acl_len);
2525 encode_nops(&hdr);
2526}
2527
2528/*
2529 * Encode a WRITE request
2530 */
2531static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2532 struct nfs_writeargs *args)
2533{
2534 struct compound_hdr hdr = {
2535 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2536 };
2537
2538 encode_compound_hdr(xdr, req, &hdr);
2539 encode_sequence(xdr, &args->seq_args, &hdr);
2540 encode_putfh(xdr, args->fh, &hdr);
2541 encode_write(xdr, args, &hdr);
2542 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2543 if (args->bitmask)
2544 encode_getfattr(xdr, args->bitmask, &hdr);
2545 encode_nops(&hdr);
2546}
2547
2548/*
2549 * a COMMIT request
2550 */
2551static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2552 struct nfs_writeargs *args)
2553{
2554 struct compound_hdr hdr = {
2555 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2556 };
2557
2558 encode_compound_hdr(xdr, req, &hdr);
2559 encode_sequence(xdr, &args->seq_args, &hdr);
2560 encode_putfh(xdr, args->fh, &hdr);
2561 encode_commit(xdr, args, &hdr);
2562 if (args->bitmask)
2563 encode_getfattr(xdr, args->bitmask, &hdr);
2564 encode_nops(&hdr);
2565}
2566
2567/*
2568 * FSINFO request
2569 */
2570static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2571 struct nfs4_fsinfo_arg *args)
2572{
2573 struct compound_hdr hdr = {
2574 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2575 };
2576
2577 encode_compound_hdr(xdr, req, &hdr);
2578 encode_sequence(xdr, &args->seq_args, &hdr);
2579 encode_putfh(xdr, args->fh, &hdr);
2580 encode_fsinfo(xdr, args->bitmask, &hdr);
2581 encode_nops(&hdr);
2582}
2583
2584/*
2585 * a PATHCONF request
2586 */
2587static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2588 const struct nfs4_pathconf_arg *args)
2589{
2590 struct compound_hdr hdr = {
2591 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2592 };
2593
2594 encode_compound_hdr(xdr, req, &hdr);
2595 encode_sequence(xdr, &args->seq_args, &hdr);
2596 encode_putfh(xdr, args->fh, &hdr);
2597 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2598 &hdr);
2599 encode_nops(&hdr);
2600}
2601
2602/*
2603 * a STATFS request
2604 */
2605static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2606 const struct nfs4_statfs_arg *args)
2607{
2608 struct compound_hdr hdr = {
2609 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2610 };
2611
2612 encode_compound_hdr(xdr, req, &hdr);
2613 encode_sequence(xdr, &args->seq_args, &hdr);
2614 encode_putfh(xdr, args->fh, &hdr);
2615 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2616 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2617 encode_nops(&hdr);
2618}
2619
2620/*
2621 * GETATTR_BITMAP request
2622 */
2623static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2624 struct xdr_stream *xdr,
2625 struct nfs4_server_caps_arg *args)
2626{
2627 struct compound_hdr hdr = {
2628 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2629 };
2630
2631 encode_compound_hdr(xdr, req, &hdr);
2632 encode_sequence(xdr, &args->seq_args, &hdr);
2633 encode_putfh(xdr, args->fhandle, &hdr);
2634 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2635 FATTR4_WORD0_LINK_SUPPORT|
2636 FATTR4_WORD0_SYMLINK_SUPPORT|
2637 FATTR4_WORD0_ACLSUPPORT, &hdr);
2638 encode_nops(&hdr);
2639}
2640
2641/*
2642 * a RENEW request
2643 */
2644static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2645 struct nfs_client *clp)
2646{
2647 struct compound_hdr hdr = {
2648 .nops = 0,
2649 };
2650
2651 encode_compound_hdr(xdr, req, &hdr);
2652 encode_renew(xdr, clp, &hdr);
2653 encode_nops(&hdr);
2654}
2655
2656/*
2657 * a SETCLIENTID request
2658 */
2659static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2660 struct xdr_stream *xdr,
2661 struct nfs4_setclientid *sc)
2662{
2663 struct compound_hdr hdr = {
2664 .nops = 0,
2665 };
2666
2667 encode_compound_hdr(xdr, req, &hdr);
2668 encode_setclientid(xdr, sc, &hdr);
2669 encode_nops(&hdr);
2670}
2671
2672/*
2673 * a SETCLIENTID_CONFIRM request
2674 */
2675static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2676 struct xdr_stream *xdr,
2677 struct nfs4_setclientid_res *arg)
2678{
2679 struct compound_hdr hdr = {
2680 .nops = 0,
2681 };
2682 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2683
2684 encode_compound_hdr(xdr, req, &hdr);
2685 encode_setclientid_confirm(xdr, arg, &hdr);
2686 encode_putrootfh(xdr, &hdr);
2687 encode_fsinfo(xdr, lease_bitmap, &hdr);
2688 encode_nops(&hdr);
2689}
2690
2691/*
2692 * DELEGRETURN request
2693 */
2694static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2695 struct xdr_stream *xdr,
2696 const struct nfs4_delegreturnargs *args)
2697{
2698 struct compound_hdr hdr = {
2699 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2700 };
2701
2702 encode_compound_hdr(xdr, req, &hdr);
2703 encode_sequence(xdr, &args->seq_args, &hdr);
2704 encode_putfh(xdr, args->fhandle, &hdr);
2705 encode_delegreturn(xdr, args->stateid, &hdr);
2706 encode_getfattr(xdr, args->bitmask, &hdr);
2707 encode_nops(&hdr);
2708}
2709
2710/*
2711 * Encode FS_LOCATIONS request
2712 */
2713static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2714 struct xdr_stream *xdr,
2715 struct nfs4_fs_locations_arg *args)
2716{
2717 struct compound_hdr hdr = {
2718 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2719 };
2720 uint32_t replen;
2721
2722 encode_compound_hdr(xdr, req, &hdr);
2723 encode_sequence(xdr, &args->seq_args, &hdr);
2724 encode_putfh(xdr, args->dir_fh, &hdr);
2725 encode_lookup(xdr, args->name, &hdr);
2726 replen = hdr.replen; /* get the attribute into args->page */
2727 encode_fs_locations(xdr, args->bitmask, &hdr);
2728
2729 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2730 0, PAGE_SIZE);
2731 encode_nops(&hdr);
2732}
2733
2734/*
2735 * Encode SECINFO request
2736 */
2737static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2738 struct xdr_stream *xdr,
2739 struct nfs4_secinfo_arg *args)
2740{
2741 struct compound_hdr hdr = {
2742 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2743 };
2744
2745 encode_compound_hdr(xdr, req, &hdr);
2746 encode_sequence(xdr, &args->seq_args, &hdr);
2747 encode_putfh(xdr, args->dir_fh, &hdr);
2748 encode_secinfo(xdr, args->name, &hdr);
2749 encode_nops(&hdr);
2750}
2751
2752#if defined(CONFIG_NFS_V4_1)
2753/*
2754 * EXCHANGE_ID request
2755 */
2756static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2757 struct xdr_stream *xdr,
2758 struct nfs41_exchange_id_args *args)
2759{
2760 struct compound_hdr hdr = {
2761 .minorversion = args->client->cl_mvops->minor_version,
2762 };
2763
2764 encode_compound_hdr(xdr, req, &hdr);
2765 encode_exchange_id(xdr, args, &hdr);
2766 encode_nops(&hdr);
2767}
2768
2769/*
2770 * a CREATE_SESSION request
2771 */
2772static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2773 struct xdr_stream *xdr,
2774 struct nfs41_create_session_args *args)
2775{
2776 struct compound_hdr hdr = {
2777 .minorversion = args->client->cl_mvops->minor_version,
2778 };
2779
2780 encode_compound_hdr(xdr, req, &hdr);
2781 encode_create_session(xdr, args, &hdr);
2782 encode_nops(&hdr);
2783}
2784
2785/*
2786 * a DESTROY_SESSION request
2787 */
2788static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2789 struct xdr_stream *xdr,
2790 struct nfs4_session *session)
2791{
2792 struct compound_hdr hdr = {
2793 .minorversion = session->clp->cl_mvops->minor_version,
2794 };
2795
2796 encode_compound_hdr(xdr, req, &hdr);
2797 encode_destroy_session(xdr, session, &hdr);
2798 encode_nops(&hdr);
2799}
2800
2801/*
2802 * a SEQUENCE request
2803 */
2804static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2805 struct nfs4_sequence_args *args)
2806{
2807 struct compound_hdr hdr = {
2808 .minorversion = nfs4_xdr_minorversion(args),
2809 };
2810
2811 encode_compound_hdr(xdr, req, &hdr);
2812 encode_sequence(xdr, args, &hdr);
2813 encode_nops(&hdr);
2814}
2815
2816/*
2817 * a GET_LEASE_TIME request
2818 */
2819static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2820 struct xdr_stream *xdr,
2821 struct nfs4_get_lease_time_args *args)
2822{
2823 struct compound_hdr hdr = {
2824 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2825 };
2826 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2827
2828 encode_compound_hdr(xdr, req, &hdr);
2829 encode_sequence(xdr, &args->la_seq_args, &hdr);
2830 encode_putrootfh(xdr, &hdr);
2831 encode_fsinfo(xdr, lease_bitmap, &hdr);
2832 encode_nops(&hdr);
2833}
2834
2835/*
2836 * a RECLAIM_COMPLETE request
2837 */
2838static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2839 struct xdr_stream *xdr,
2840 struct nfs41_reclaim_complete_args *args)
2841{
2842 struct compound_hdr hdr = {
2843 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2844 };
2845
2846 encode_compound_hdr(xdr, req, &hdr);
2847 encode_sequence(xdr, &args->seq_args, &hdr);
2848 encode_reclaim_complete(xdr, args, &hdr);
2849 encode_nops(&hdr);
2850}
2851
2852/*
2853 * Encode GETDEVICELIST request
2854 */
2855static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2856 struct xdr_stream *xdr,
2857 struct nfs4_getdevicelist_args *args)
2858{
2859 struct compound_hdr hdr = {
2860 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2861 };
2862
2863 encode_compound_hdr(xdr, req, &hdr);
2864 encode_sequence(xdr, &args->seq_args, &hdr);
2865 encode_putfh(xdr, args->fh, &hdr);
2866 encode_getdevicelist(xdr, args, &hdr);
2867 encode_nops(&hdr);
2868}
2869
2870/*
2871 * Encode GETDEVICEINFO request
2872 */
2873static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2874 struct xdr_stream *xdr,
2875 struct nfs4_getdeviceinfo_args *args)
2876{
2877 struct compound_hdr hdr = {
2878 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2879 };
2880
2881 encode_compound_hdr(xdr, req, &hdr);
2882 encode_sequence(xdr, &args->seq_args, &hdr);
2883 encode_getdeviceinfo(xdr, args, &hdr);
2884
2885 /* set up reply kvec. Subtract notification bitmap max size (2)
2886 * so that notification bitmap is put in xdr_buf tail */
2887 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2888 args->pdev->pages, args->pdev->pgbase,
2889 args->pdev->pglen);
2890
2891 encode_nops(&hdr);
2892}
2893
2894/*
2895 * Encode LAYOUTGET request
2896 */
2897static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2898 struct xdr_stream *xdr,
2899 struct nfs4_layoutget_args *args)
2900{
2901 struct compound_hdr hdr = {
2902 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2903 };
2904
2905 encode_compound_hdr(xdr, req, &hdr);
2906 encode_sequence(xdr, &args->seq_args, &hdr);
2907 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2908 encode_layoutget(xdr, args, &hdr);
2909
2910 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2911 args->layout.pages, 0, args->layout.pglen);
2912
2913 encode_nops(&hdr);
2914}
2915
2916/*
2917 * Encode LAYOUTCOMMIT request
2918 */
2919static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2920 struct xdr_stream *xdr,
2921 struct nfs4_layoutcommit_args *args)
2922{
2923 struct nfs4_layoutcommit_data *data =
2924 container_of(args, struct nfs4_layoutcommit_data, args);
2925 struct compound_hdr hdr = {
2926 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2927 };
2928
2929 encode_compound_hdr(xdr, req, &hdr);
2930 encode_sequence(xdr, &args->seq_args, &hdr);
2931 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2932 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2933 encode_getfattr(xdr, args->bitmask, &hdr);
2934 encode_nops(&hdr);
2935}
2936
2937/*
2938 * Encode LAYOUTRETURN request
2939 */
2940static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2941 struct xdr_stream *xdr,
2942 struct nfs4_layoutreturn_args *args)
2943{
2944 struct compound_hdr hdr = {
2945 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2946 };
2947
2948 encode_compound_hdr(xdr, req, &hdr);
2949 encode_sequence(xdr, &args->seq_args, &hdr);
2950 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2951 encode_layoutreturn(xdr, args, &hdr);
2952 encode_nops(&hdr);
2953}
2954
2955/*
2956 * Encode SECINFO_NO_NAME request
2957 */
2958static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2959 struct xdr_stream *xdr,
2960 struct nfs41_secinfo_no_name_args *args)
2961{
2962 struct compound_hdr hdr = {
2963 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2964 };
2965
2966 encode_compound_hdr(xdr, req, &hdr);
2967 encode_sequence(xdr, &args->seq_args, &hdr);
2968 encode_putrootfh(xdr, &hdr);
2969 encode_secinfo_no_name(xdr, args, &hdr);
2970 encode_nops(&hdr);
2971 return 0;
2972}
2973
2974/*
2975 * Encode TEST_STATEID request
2976 */
2977static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2978 struct xdr_stream *xdr,
2979 struct nfs41_test_stateid_args *args)
2980{
2981 struct compound_hdr hdr = {
2982 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2983 };
2984
2985 encode_compound_hdr(xdr, req, &hdr);
2986 encode_sequence(xdr, &args->seq_args, &hdr);
2987 encode_test_stateid(xdr, args, &hdr);
2988 encode_nops(&hdr);
2989}
2990
2991/*
2992 * Encode FREE_STATEID request
2993 */
2994static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2995 struct xdr_stream *xdr,
2996 struct nfs41_free_stateid_args *args)
2997{
2998 struct compound_hdr hdr = {
2999 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3000 };
3001
3002 encode_compound_hdr(xdr, req, &hdr);
3003 encode_sequence(xdr, &args->seq_args, &hdr);
3004 encode_free_stateid(xdr, args, &hdr);
3005 encode_nops(&hdr);
3006}
3007#endif /* CONFIG_NFS_V4_1 */
3008
3009static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3010{
3011 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3012 "Remaining buffer length is %tu words.\n",
3013 func, xdr->end - xdr->p);
3014}
3015
3016static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3017{
3018 __be32 *p;
3019
3020 p = xdr_inline_decode(xdr, 4);
3021 if (unlikely(!p))
3022 goto out_overflow;
3023 *len = be32_to_cpup(p);
3024 p = xdr_inline_decode(xdr, *len);
3025 if (unlikely(!p))
3026 goto out_overflow;
3027 *string = (char *)p;
3028 return 0;
3029out_overflow:
3030 print_overflow_msg(__func__, xdr);
3031 return -EIO;
3032}
3033
3034static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3035{
3036 __be32 *p;
3037
3038 p = xdr_inline_decode(xdr, 8);
3039 if (unlikely(!p))
3040 goto out_overflow;
3041 hdr->status = be32_to_cpup(p++);
3042 hdr->taglen = be32_to_cpup(p);
3043
3044 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3045 if (unlikely(!p))
3046 goto out_overflow;
3047 hdr->tag = (char *)p;
3048 p += XDR_QUADLEN(hdr->taglen);
3049 hdr->nops = be32_to_cpup(p);
3050 if (unlikely(hdr->nops < 1))
3051 return nfs4_stat_to_errno(hdr->status);
3052 return 0;
3053out_overflow:
3054 print_overflow_msg(__func__, xdr);
3055 return -EIO;
3056}
3057
3058static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3059{
3060 __be32 *p;
3061 uint32_t opnum;
3062 int32_t nfserr;
3063
3064 p = xdr_inline_decode(xdr, 8);
3065 if (unlikely(!p))
3066 goto out_overflow;
3067 opnum = be32_to_cpup(p++);
3068 if (opnum != expected) {
3069 dprintk("nfs: Server returned operation"
3070 " %d but we issued a request for %d\n",
3071 opnum, expected);
3072 return -EIO;
3073 }
3074 nfserr = be32_to_cpup(p);
3075 if (nfserr != NFS_OK)
3076 return nfs4_stat_to_errno(nfserr);
3077 return 0;
3078out_overflow:
3079 print_overflow_msg(__func__, xdr);
3080 return -EIO;
3081}
3082
3083/* Dummy routine */
3084static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3085{
3086 __be32 *p;
3087 unsigned int strlen;
3088 char *str;
3089
3090 p = xdr_inline_decode(xdr, 12);
3091 if (likely(p))
3092 return decode_opaque_inline(xdr, &strlen, &str);
3093 print_overflow_msg(__func__, xdr);
3094 return -EIO;
3095}
3096
3097static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3098{
3099 uint32_t bmlen;
3100 __be32 *p;
3101
3102 p = xdr_inline_decode(xdr, 4);
3103 if (unlikely(!p))
3104 goto out_overflow;
3105 bmlen = be32_to_cpup(p);
3106
3107 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3108 p = xdr_inline_decode(xdr, (bmlen << 2));
3109 if (unlikely(!p))
3110 goto out_overflow;
3111 if (bmlen > 0) {
3112 bitmap[0] = be32_to_cpup(p++);
3113 if (bmlen > 1) {
3114 bitmap[1] = be32_to_cpup(p++);
3115 if (bmlen > 2)
3116 bitmap[2] = be32_to_cpup(p);
3117 }
3118 }
3119 return 0;
3120out_overflow:
3121 print_overflow_msg(__func__, xdr);
3122 return -EIO;
3123}
3124
3125static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
3126{
3127 __be32 *p;
3128
3129 p = xdr_inline_decode(xdr, 4);
3130 if (unlikely(!p))
3131 goto out_overflow;
3132 *attrlen = be32_to_cpup(p);
3133 *savep = xdr->p;
3134 return 0;
3135out_overflow:
3136 print_overflow_msg(__func__, xdr);
3137 return -EIO;
3138}
3139
3140static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3141{
3142 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3143 int ret;
3144 ret = decode_attr_bitmap(xdr, bitmask);
3145 if (unlikely(ret < 0))
3146 return ret;
3147 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3148 } else
3149 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3150 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3151 bitmask[0], bitmask[1], bitmask[2]);
3152 return 0;
3153}
3154
3155static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3156{
3157 __be32 *p;
3158 int ret = 0;
3159
3160 *type = 0;
3161 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3162 return -EIO;
3163 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3164 p = xdr_inline_decode(xdr, 4);
3165 if (unlikely(!p))
3166 goto out_overflow;
3167 *type = be32_to_cpup(p);
3168 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3169 dprintk("%s: bad type %d\n", __func__, *type);
3170 return -EIO;
3171 }
3172 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3173 ret = NFS_ATTR_FATTR_TYPE;
3174 }
3175 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3176 return ret;
3177out_overflow:
3178 print_overflow_msg(__func__, xdr);
3179 return -EIO;
3180}
3181
3182static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3183{
3184 __be32 *p;
3185 int ret = 0;
3186
3187 *change = 0;
3188 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3189 return -EIO;
3190 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3191 p = xdr_inline_decode(xdr, 8);
3192 if (unlikely(!p))
3193 goto out_overflow;
3194 xdr_decode_hyper(p, change);
3195 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3196 ret = NFS_ATTR_FATTR_CHANGE;
3197 }
3198 dprintk("%s: change attribute=%Lu\n", __func__,
3199 (unsigned long long)*change);
3200 return ret;
3201out_overflow:
3202 print_overflow_msg(__func__, xdr);
3203 return -EIO;
3204}
3205
3206static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3207{
3208 __be32 *p;
3209 int ret = 0;
3210
3211 *size = 0;
3212 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3213 return -EIO;
3214 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3215 p = xdr_inline_decode(xdr, 8);
3216 if (unlikely(!p))
3217 goto out_overflow;
3218 xdr_decode_hyper(p, size);
3219 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3220 ret = NFS_ATTR_FATTR_SIZE;
3221 }
3222 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3223 return ret;
3224out_overflow:
3225 print_overflow_msg(__func__, xdr);
3226 return -EIO;
3227}
3228
3229static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3230{
3231 __be32 *p;
3232
3233 *res = 0;
3234 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3235 return -EIO;
3236 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3237 p = xdr_inline_decode(xdr, 4);
3238 if (unlikely(!p))
3239 goto out_overflow;
3240 *res = be32_to_cpup(p);
3241 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3242 }
3243 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3244 return 0;
3245out_overflow:
3246 print_overflow_msg(__func__, xdr);
3247 return -EIO;
3248}
3249
3250static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3251{
3252 __be32 *p;
3253
3254 *res = 0;
3255 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3256 return -EIO;
3257 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3258 p = xdr_inline_decode(xdr, 4);
3259 if (unlikely(!p))
3260 goto out_overflow;
3261 *res = be32_to_cpup(p);
3262 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3263 }
3264 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3265 return 0;
3266out_overflow:
3267 print_overflow_msg(__func__, xdr);
3268 return -EIO;
3269}
3270
3271static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3272{
3273 __be32 *p;
3274 int ret = 0;
3275
3276 fsid->major = 0;
3277 fsid->minor = 0;
3278 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3279 return -EIO;
3280 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3281 p = xdr_inline_decode(xdr, 16);
3282 if (unlikely(!p))
3283 goto out_overflow;
3284 p = xdr_decode_hyper(p, &fsid->major);
3285 xdr_decode_hyper(p, &fsid->minor);
3286 bitmap[0] &= ~FATTR4_WORD0_FSID;
3287 ret = NFS_ATTR_FATTR_FSID;
3288 }
3289 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3290 (unsigned long long)fsid->major,
3291 (unsigned long long)fsid->minor);
3292 return ret;
3293out_overflow:
3294 print_overflow_msg(__func__, xdr);
3295 return -EIO;
3296}
3297
3298static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3299{
3300 __be32 *p;
3301
3302 *res = 60;
3303 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3304 return -EIO;
3305 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3306 p = xdr_inline_decode(xdr, 4);
3307 if (unlikely(!p))
3308 goto out_overflow;
3309 *res = be32_to_cpup(p);
3310 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3311 }
3312 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3313 return 0;
3314out_overflow:
3315 print_overflow_msg(__func__, xdr);
3316 return -EIO;
3317}
3318
3319static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3320{
3321 __be32 *p;
3322
3323 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3324 return -EIO;
3325 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3326 p = xdr_inline_decode(xdr, 4);
3327 if (unlikely(!p))
3328 goto out_overflow;
3329 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3330 *res = -be32_to_cpup(p);
3331 }
3332 return 0;
3333out_overflow:
3334 print_overflow_msg(__func__, xdr);
3335 return -EIO;
3336}
3337
3338static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3339{
3340 __be32 *p;
3341 int len;
3342
3343 if (fh != NULL)
3344 memset(fh, 0, sizeof(*fh));
3345
3346 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3347 return -EIO;
3348 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3349 p = xdr_inline_decode(xdr, 4);
3350 if (unlikely(!p))
3351 goto out_overflow;
3352 len = be32_to_cpup(p);
3353 if (len > NFS4_FHSIZE)
3354 return -EIO;
3355 p = xdr_inline_decode(xdr, len);
3356 if (unlikely(!p))
3357 goto out_overflow;
3358 if (fh != NULL) {
3359 memcpy(fh->data, p, len);
3360 fh->size = len;
3361 }
3362 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3363 }
3364 return 0;
3365out_overflow:
3366 print_overflow_msg(__func__, xdr);
3367 return -EIO;
3368}
3369
3370static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3371{
3372 __be32 *p;
3373
3374 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3375 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3376 return -EIO;
3377 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3378 p = xdr_inline_decode(xdr, 4);
3379 if (unlikely(!p))
3380 goto out_overflow;
3381 *res = be32_to_cpup(p);
3382 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3383 }
3384 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3385 return 0;
3386out_overflow:
3387 print_overflow_msg(__func__, xdr);
3388 return -EIO;
3389}
3390
3391static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3392{
3393 __be32 *p;
3394 int ret = 0;
3395
3396 *fileid = 0;
3397 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3398 return -EIO;
3399 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3400 p = xdr_inline_decode(xdr, 8);
3401 if (unlikely(!p))
3402 goto out_overflow;
3403 xdr_decode_hyper(p, fileid);
3404 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3405 ret = NFS_ATTR_FATTR_FILEID;
3406 }
3407 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3408 return ret;
3409out_overflow:
3410 print_overflow_msg(__func__, xdr);
3411 return -EIO;
3412}
3413
3414static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3415{
3416 __be32 *p;
3417 int ret = 0;
3418
3419 *fileid = 0;
3420 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3421 return -EIO;
3422 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3423 p = xdr_inline_decode(xdr, 8);
3424 if (unlikely(!p))
3425 goto out_overflow;
3426 xdr_decode_hyper(p, fileid);
3427 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3428 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3429 }
3430 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3431 return ret;
3432out_overflow:
3433 print_overflow_msg(__func__, xdr);
3434 return -EIO;
3435}
3436
3437static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3438{
3439 __be32 *p;
3440 int status = 0;
3441
3442 *res = 0;
3443 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3444 return -EIO;
3445 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3446 p = xdr_inline_decode(xdr, 8);
3447 if (unlikely(!p))
3448 goto out_overflow;
3449 xdr_decode_hyper(p, res);
3450 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3451 }
3452 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3453 return status;
3454out_overflow:
3455 print_overflow_msg(__func__, xdr);
3456 return -EIO;
3457}
3458
3459static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3460{
3461 __be32 *p;
3462 int status = 0;
3463
3464 *res = 0;
3465 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3466 return -EIO;
3467 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3468 p = xdr_inline_decode(xdr, 8);
3469 if (unlikely(!p))
3470 goto out_overflow;
3471 xdr_decode_hyper(p, res);
3472 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3473 }
3474 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3475 return status;
3476out_overflow:
3477 print_overflow_msg(__func__, xdr);
3478 return -EIO;
3479}
3480
3481static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3482{
3483 __be32 *p;
3484 int status = 0;
3485
3486 *res = 0;
3487 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3488 return -EIO;
3489 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3490 p = xdr_inline_decode(xdr, 8);
3491 if (unlikely(!p))
3492 goto out_overflow;
3493 xdr_decode_hyper(p, res);
3494 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3495 }
3496 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3497 return status;
3498out_overflow:
3499 print_overflow_msg(__func__, xdr);
3500 return -EIO;
3501}
3502
3503static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3504{
3505 u32 n;
3506 __be32 *p;
3507 int status = 0;
3508
3509 p = xdr_inline_decode(xdr, 4);
3510 if (unlikely(!p))
3511 goto out_overflow;
3512 n = be32_to_cpup(p);
3513 if (n == 0)
3514 goto root_path;
3515 dprintk("path ");
3516 path->ncomponents = 0;
3517 while (path->ncomponents < n) {
3518 struct nfs4_string *component = &path->components[path->ncomponents];
3519 status = decode_opaque_inline(xdr, &component->len, &component->data);
3520 if (unlikely(status != 0))
3521 goto out_eio;
3522 if (path->ncomponents != n)
3523 dprintk("/");
3524 dprintk("%s", component->data);
3525 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3526 path->ncomponents++;
3527 else {
3528 dprintk("cannot parse %d components in path\n", n);
3529 goto out_eio;
3530 }
3531 }
3532out:
3533 dprintk("\n");
3534 return status;
3535root_path:
3536/* a root pathname is sent as a zero component4 */
3537 path->ncomponents = 1;
3538 path->components[0].len=0;
3539 path->components[0].data=NULL;
3540 dprintk("path /\n");
3541 goto out;
3542out_eio:
3543 dprintk(" status %d", status);
3544 status = -EIO;
3545 goto out;
3546out_overflow:
3547 print_overflow_msg(__func__, xdr);
3548 return -EIO;
3549}
3550
3551static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3552{
3553 int n;
3554 __be32 *p;
3555 int status = -EIO;
3556
3557 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3558 goto out;
3559 status = 0;
3560 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3561 goto out;
3562 dprintk("%s: fsroot ", __func__);
3563 status = decode_pathname(xdr, &res->fs_path);
3564 if (unlikely(status != 0))
3565 goto out;
3566 p = xdr_inline_decode(xdr, 4);
3567 if (unlikely(!p))
3568 goto out_overflow;
3569 n = be32_to_cpup(p);
3570 if (n <= 0)
3571 goto out_eio;
3572 res->nlocations = 0;
3573 while (res->nlocations < n) {
3574 u32 m;
3575 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3576
3577 p = xdr_inline_decode(xdr, 4);
3578 if (unlikely(!p))
3579 goto out_overflow;
3580 m = be32_to_cpup(p);
3581
3582 loc->nservers = 0;
3583 dprintk("%s: servers ", __func__);
3584 while (loc->nservers < m) {
3585 struct nfs4_string *server = &loc->servers[loc->nservers];
3586 status = decode_opaque_inline(xdr, &server->len, &server->data);
3587 if (unlikely(status != 0))
3588 goto out_eio;
3589 dprintk("%s ", server->data);
3590 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3591 loc->nservers++;
3592 else {
3593 unsigned int i;
3594 dprintk("%s: using first %u of %u servers "
3595 "returned for location %u\n",
3596 __func__,
3597 NFS4_FS_LOCATION_MAXSERVERS,
3598 m, res->nlocations);
3599 for (i = loc->nservers; i < m; i++) {
3600 unsigned int len;
3601 char *data;
3602 status = decode_opaque_inline(xdr, &len, &data);
3603 if (unlikely(status != 0))
3604 goto out_eio;
3605 }
3606 }
3607 }
3608 status = decode_pathname(xdr, &loc->rootpath);
3609 if (unlikely(status != 0))
3610 goto out_eio;
3611 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3612 res->nlocations++;
3613 }
3614 if (res->nlocations != 0)
3615 status = NFS_ATTR_FATTR_V4_REFERRAL;
3616out:
3617 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3618 return status;
3619out_overflow:
3620 print_overflow_msg(__func__, xdr);
3621out_eio:
3622 status = -EIO;
3623 goto out;
3624}
3625
3626static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3627{
3628 __be32 *p;
3629 int status = 0;
3630
3631 *res = 0;
3632 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3633 return -EIO;
3634 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3635 p = xdr_inline_decode(xdr, 8);
3636 if (unlikely(!p))
3637 goto out_overflow;
3638 xdr_decode_hyper(p, res);
3639 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3640 }
3641 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3642 return status;
3643out_overflow:
3644 print_overflow_msg(__func__, xdr);
3645 return -EIO;
3646}
3647
3648static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3649{
3650 __be32 *p;
3651 int status = 0;
3652
3653 *maxlink = 1;
3654 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3655 return -EIO;
3656 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3657 p = xdr_inline_decode(xdr, 4);
3658 if (unlikely(!p))
3659 goto out_overflow;
3660 *maxlink = be32_to_cpup(p);
3661 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3662 }
3663 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3664 return status;
3665out_overflow:
3666 print_overflow_msg(__func__, xdr);
3667 return -EIO;
3668}
3669
3670static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3671{
3672 __be32 *p;
3673 int status = 0;
3674
3675 *maxname = 1024;
3676 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3677 return -EIO;
3678 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3679 p = xdr_inline_decode(xdr, 4);
3680 if (unlikely(!p))
3681 goto out_overflow;
3682 *maxname = be32_to_cpup(p);
3683 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3684 }
3685 dprintk("%s: maxname=%u\n", __func__, *maxname);
3686 return status;
3687out_overflow:
3688 print_overflow_msg(__func__, xdr);
3689 return -EIO;
3690}
3691
3692static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3693{
3694 __be32 *p;
3695 int status = 0;
3696
3697 *res = 1024;
3698 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3699 return -EIO;
3700 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3701 uint64_t maxread;
3702 p = xdr_inline_decode(xdr, 8);
3703 if (unlikely(!p))
3704 goto out_overflow;
3705 xdr_decode_hyper(p, &maxread);
3706 if (maxread > 0x7FFFFFFF)
3707 maxread = 0x7FFFFFFF;
3708 *res = (uint32_t)maxread;
3709 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3710 }
3711 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3712 return status;
3713out_overflow:
3714 print_overflow_msg(__func__, xdr);
3715 return -EIO;
3716}
3717
3718static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3719{
3720 __be32 *p;
3721 int status = 0;
3722
3723 *res = 1024;
3724 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3725 return -EIO;
3726 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3727 uint64_t maxwrite;
3728 p = xdr_inline_decode(xdr, 8);
3729 if (unlikely(!p))
3730 goto out_overflow;
3731 xdr_decode_hyper(p, &maxwrite);
3732 if (maxwrite > 0x7FFFFFFF)
3733 maxwrite = 0x7FFFFFFF;
3734 *res = (uint32_t)maxwrite;
3735 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3736 }
3737 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3738 return status;
3739out_overflow:
3740 print_overflow_msg(__func__, xdr);
3741 return -EIO;
3742}
3743
3744static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3745{
3746 uint32_t tmp;
3747 __be32 *p;
3748 int ret = 0;
3749
3750 *mode = 0;
3751 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3752 return -EIO;
3753 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3754 p = xdr_inline_decode(xdr, 4);
3755 if (unlikely(!p))
3756 goto out_overflow;
3757 tmp = be32_to_cpup(p);
3758 *mode = tmp & ~S_IFMT;
3759 bitmap[1] &= ~FATTR4_WORD1_MODE;
3760 ret = NFS_ATTR_FATTR_MODE;
3761 }
3762 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3763 return ret;
3764out_overflow:
3765 print_overflow_msg(__func__, xdr);
3766 return -EIO;
3767}
3768
3769static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3770{
3771 __be32 *p;
3772 int ret = 0;
3773
3774 *nlink = 1;
3775 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3776 return -EIO;
3777 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3778 p = xdr_inline_decode(xdr, 4);
3779 if (unlikely(!p))
3780 goto out_overflow;
3781 *nlink = be32_to_cpup(p);
3782 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3783 ret = NFS_ATTR_FATTR_NLINK;
3784 }
3785 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3786 return ret;
3787out_overflow:
3788 print_overflow_msg(__func__, xdr);
3789 return -EIO;
3790}
3791
3792static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3793 const struct nfs_server *server, uint32_t *uid, int may_sleep)
3794{
3795 uint32_t len;
3796 __be32 *p;
3797 int ret = 0;
3798
3799 *uid = -2;
3800 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3801 return -EIO;
3802 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3803 p = xdr_inline_decode(xdr, 4);
3804 if (unlikely(!p))
3805 goto out_overflow;
3806 len = be32_to_cpup(p);
3807 p = xdr_inline_decode(xdr, len);
3808 if (unlikely(!p))
3809 goto out_overflow;
3810 if (!may_sleep) {
3811 /* do nothing */
3812 } else if (len < XDR_MAX_NETOBJ) {
3813 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3814 ret = NFS_ATTR_FATTR_OWNER;
3815 else
3816 dprintk("%s: nfs_map_name_to_uid failed!\n",
3817 __func__);
3818 } else
3819 dprintk("%s: name too long (%u)!\n",
3820 __func__, len);
3821 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3822 }
3823 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3824 return ret;
3825out_overflow:
3826 print_overflow_msg(__func__, xdr);
3827 return -EIO;
3828}
3829
3830static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3831 const struct nfs_server *server, uint32_t *gid, int may_sleep)
3832{
3833 uint32_t len;
3834 __be32 *p;
3835 int ret = 0;
3836
3837 *gid = -2;
3838 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3839 return -EIO;
3840 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3841 p = xdr_inline_decode(xdr, 4);
3842 if (unlikely(!p))
3843 goto out_overflow;
3844 len = be32_to_cpup(p);
3845 p = xdr_inline_decode(xdr, len);
3846 if (unlikely(!p))
3847 goto out_overflow;
3848 if (!may_sleep) {
3849 /* do nothing */
3850 } else if (len < XDR_MAX_NETOBJ) {
3851 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3852 ret = NFS_ATTR_FATTR_GROUP;
3853 else
3854 dprintk("%s: nfs_map_group_to_gid failed!\n",
3855 __func__);
3856 } else
3857 dprintk("%s: name too long (%u)!\n",
3858 __func__, len);
3859 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3860 }
3861 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3862 return ret;
3863out_overflow:
3864 print_overflow_msg(__func__, xdr);
3865 return -EIO;
3866}
3867
3868static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3869{
3870 uint32_t major = 0, minor = 0;
3871 __be32 *p;
3872 int ret = 0;
3873
3874 *rdev = MKDEV(0,0);
3875 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3876 return -EIO;
3877 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3878 dev_t tmp;
3879
3880 p = xdr_inline_decode(xdr, 8);
3881 if (unlikely(!p))
3882 goto out_overflow;
3883 major = be32_to_cpup(p++);
3884 minor = be32_to_cpup(p);
3885 tmp = MKDEV(major, minor);
3886 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3887 *rdev = tmp;
3888 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3889 ret = NFS_ATTR_FATTR_RDEV;
3890 }
3891 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3892 return ret;
3893out_overflow:
3894 print_overflow_msg(__func__, xdr);
3895 return -EIO;
3896}
3897
3898static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3899{
3900 __be32 *p;
3901 int status = 0;
3902
3903 *res = 0;
3904 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3905 return -EIO;
3906 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3907 p = xdr_inline_decode(xdr, 8);
3908 if (unlikely(!p))
3909 goto out_overflow;
3910 xdr_decode_hyper(p, res);
3911 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3912 }
3913 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3914 return status;
3915out_overflow:
3916 print_overflow_msg(__func__, xdr);
3917 return -EIO;
3918}
3919
3920static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3921{
3922 __be32 *p;
3923 int status = 0;
3924
3925 *res = 0;
3926 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3927 return -EIO;
3928 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3929 p = xdr_inline_decode(xdr, 8);
3930 if (unlikely(!p))
3931 goto out_overflow;
3932 xdr_decode_hyper(p, res);
3933 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3934 }
3935 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3936 return status;
3937out_overflow:
3938 print_overflow_msg(__func__, xdr);
3939 return -EIO;
3940}
3941
3942static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3943{
3944 __be32 *p;
3945 int status = 0;
3946
3947 *res = 0;
3948 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3949 return -EIO;
3950 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3951 p = xdr_inline_decode(xdr, 8);
3952 if (unlikely(!p))
3953 goto out_overflow;
3954 xdr_decode_hyper(p, res);
3955 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3956 }
3957 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3958 return status;
3959out_overflow:
3960 print_overflow_msg(__func__, xdr);
3961 return -EIO;
3962}
3963
3964static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3965{
3966 __be32 *p;
3967 int ret = 0;
3968
3969 *used = 0;
3970 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3971 return -EIO;
3972 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3973 p = xdr_inline_decode(xdr, 8);
3974 if (unlikely(!p))
3975 goto out_overflow;
3976 xdr_decode_hyper(p, used);
3977 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3978 ret = NFS_ATTR_FATTR_SPACE_USED;
3979 }
3980 dprintk("%s: space used=%Lu\n", __func__,
3981 (unsigned long long)*used);
3982 return ret;
3983out_overflow:
3984 print_overflow_msg(__func__, xdr);
3985 return -EIO;
3986}
3987
3988static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3989{
3990 __be32 *p;
3991 uint64_t sec;
3992 uint32_t nsec;
3993
3994 p = xdr_inline_decode(xdr, 12);
3995 if (unlikely(!p))
3996 goto out_overflow;
3997 p = xdr_decode_hyper(p, &sec);
3998 nsec = be32_to_cpup(p);
3999 time->tv_sec = (time_t)sec;
4000 time->tv_nsec = (long)nsec;
4001 return 0;
4002out_overflow:
4003 print_overflow_msg(__func__, xdr);
4004 return -EIO;
4005}
4006
4007static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4008{
4009 int status = 0;
4010
4011 time->tv_sec = 0;
4012 time->tv_nsec = 0;
4013 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4014 return -EIO;
4015 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4016 status = decode_attr_time(xdr, time);
4017 if (status == 0)
4018 status = NFS_ATTR_FATTR_ATIME;
4019 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4020 }
4021 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4022 return status;
4023}
4024
4025static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4026{
4027 int status = 0;
4028
4029 time->tv_sec = 0;
4030 time->tv_nsec = 0;
4031 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4032 return -EIO;
4033 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4034 status = decode_attr_time(xdr, time);
4035 if (status == 0)
4036 status = NFS_ATTR_FATTR_CTIME;
4037 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4038 }
4039 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4040 return status;
4041}
4042
4043static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4044 struct timespec *time)
4045{
4046 int status = 0;
4047
4048 time->tv_sec = 0;
4049 time->tv_nsec = 0;
4050 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4051 return -EIO;
4052 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4053 status = decode_attr_time(xdr, time);
4054 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4055 }
4056 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4057 (long)time->tv_nsec);
4058 return status;
4059}
4060
4061static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4062{
4063 int status = 0;
4064
4065 time->tv_sec = 0;
4066 time->tv_nsec = 0;
4067 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4068 return -EIO;
4069 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4070 status = decode_attr_time(xdr, time);
4071 if (status == 0)
4072 status = NFS_ATTR_FATTR_MTIME;
4073 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4074 }
4075 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4076 return status;
4077}
4078
4079static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
4080{
4081 unsigned int attrwords = XDR_QUADLEN(attrlen);
4082 unsigned int nwords = xdr->p - savep;
4083
4084 if (unlikely(attrwords != nwords)) {
4085 dprintk("%s: server returned incorrect attribute length: "
4086 "%u %c %u\n",
4087 __func__,
4088 attrwords << 2,
4089 (attrwords < nwords) ? '<' : '>',
4090 nwords << 2);
4091 return -EIO;
4092 }
4093 return 0;
4094}
4095
4096static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4097{
4098 __be32 *p;
4099
4100 p = xdr_inline_decode(xdr, 20);
4101 if (unlikely(!p))
4102 goto out_overflow;
4103 cinfo->atomic = be32_to_cpup(p++);
4104 p = xdr_decode_hyper(p, &cinfo->before);
4105 xdr_decode_hyper(p, &cinfo->after);
4106 return 0;
4107out_overflow:
4108 print_overflow_msg(__func__, xdr);
4109 return -EIO;
4110}
4111
4112static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
4113{
4114 __be32 *p;
4115 uint32_t supp, acc;
4116 int status;
4117
4118 status = decode_op_hdr(xdr, OP_ACCESS);
4119 if (status)
4120 return status;
4121 p = xdr_inline_decode(xdr, 8);
4122 if (unlikely(!p))
4123 goto out_overflow;
4124 supp = be32_to_cpup(p++);
4125 acc = be32_to_cpup(p);
4126 access->supported = supp;
4127 access->access = acc;
4128 return 0;
4129out_overflow:
4130 print_overflow_msg(__func__, xdr);
4131 return -EIO;
4132}
4133
4134static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4135{
4136 __be32 *p;
4137
4138 p = xdr_inline_decode(xdr, len);
4139 if (likely(p)) {
4140 memcpy(buf, p, len);
4141 return 0;
4142 }
4143 print_overflow_msg(__func__, xdr);
4144 return -EIO;
4145}
4146
4147static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4148{
4149 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
4150}
4151
4152static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4153{
4154 int status;
4155
4156 status = decode_op_hdr(xdr, OP_CLOSE);
4157 if (status != -EIO)
4158 nfs_increment_open_seqid(status, res->seqid);
4159 if (!status)
4160 status = decode_stateid(xdr, &res->stateid);
4161 return status;
4162}
4163
4164static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4165{
4166 return decode_opaque_fixed(xdr, verifier, 8);
4167}
4168
4169static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
4170{
4171 int status;
4172
4173 status = decode_op_hdr(xdr, OP_COMMIT);
4174 if (!status)
4175 status = decode_verifier(xdr, res->verf->verifier);
4176 return status;
4177}
4178
4179static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4180{
4181 __be32 *p;
4182 uint32_t bmlen;
4183 int status;
4184
4185 status = decode_op_hdr(xdr, OP_CREATE);
4186 if (status)
4187 return status;
4188 if ((status = decode_change_info(xdr, cinfo)))
4189 return status;
4190 p = xdr_inline_decode(xdr, 4);
4191 if (unlikely(!p))
4192 goto out_overflow;
4193 bmlen = be32_to_cpup(p);
4194 p = xdr_inline_decode(xdr, bmlen << 2);
4195 if (likely(p))
4196 return 0;
4197out_overflow:
4198 print_overflow_msg(__func__, xdr);
4199 return -EIO;
4200}
4201
4202static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4203{
4204 __be32 *savep;
4205 uint32_t attrlen, bitmap[3] = {0};
4206 int status;
4207
4208 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4209 goto xdr_error;
4210 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4211 goto xdr_error;
4212 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4213 goto xdr_error;
4214 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4215 goto xdr_error;
4216 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4217 goto xdr_error;
4218 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4219 goto xdr_error;
4220 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4221 goto xdr_error;
4222 status = verify_attr_len(xdr, savep, attrlen);
4223xdr_error:
4224 dprintk("%s: xdr returned %d!\n", __func__, -status);
4225 return status;
4226}
4227
4228static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4229{
4230 __be32 *savep;
4231 uint32_t attrlen, bitmap[3] = {0};
4232 int status;
4233
4234 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4235 goto xdr_error;
4236 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4237 goto xdr_error;
4238 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4239 goto xdr_error;
4240
4241 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4242 goto xdr_error;
4243 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4244 goto xdr_error;
4245 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4246 goto xdr_error;
4247 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4248 goto xdr_error;
4249 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4250 goto xdr_error;
4251 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4252 goto xdr_error;
4253
4254 status = verify_attr_len(xdr, savep, attrlen);
4255xdr_error:
4256 dprintk("%s: xdr returned %d!\n", __func__, -status);
4257 return status;
4258}
4259
4260static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4261{
4262 __be32 *savep;
4263 uint32_t attrlen, bitmap[3] = {0};
4264 int status;
4265
4266 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4267 goto xdr_error;
4268 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4269 goto xdr_error;
4270 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4271 goto xdr_error;
4272
4273 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4274 goto xdr_error;
4275 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4276 goto xdr_error;
4277
4278 status = verify_attr_len(xdr, savep, attrlen);
4279xdr_error:
4280 dprintk("%s: xdr returned %d!\n", __func__, -status);
4281 return status;
4282}
4283
4284static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4285 struct nfs_fattr *fattr, struct nfs_fh *fh,
4286 const struct nfs_server *server, int may_sleep)
4287{
4288 int status;
4289 umode_t fmode = 0;
4290 uint32_t type;
4291 int32_t err;
4292
4293 status = decode_attr_type(xdr, bitmap, &type);
4294 if (status < 0)
4295 goto xdr_error;
4296 fattr->mode = 0;
4297 if (status != 0) {
4298 fattr->mode |= nfs_type2fmt[type];
4299 fattr->valid |= status;
4300 }
4301
4302 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4303 if (status < 0)
4304 goto xdr_error;
4305 fattr->valid |= status;
4306
4307 status = decode_attr_size(xdr, bitmap, &fattr->size);
4308 if (status < 0)
4309 goto xdr_error;
4310 fattr->valid |= status;
4311
4312 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4313 if (status < 0)
4314 goto xdr_error;
4315 fattr->valid |= status;
4316
4317 err = 0;
4318 status = decode_attr_error(xdr, bitmap, &err);
4319 if (status < 0)
4320 goto xdr_error;
4321 if (err == -NFS4ERR_WRONGSEC)
4322 nfs_fixup_secinfo_attributes(fattr, fh);
4323
4324 status = decode_attr_filehandle(xdr, bitmap, fh);
4325 if (status < 0)
4326 goto xdr_error;
4327
4328 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4329 if (status < 0)
4330 goto xdr_error;
4331 fattr->valid |= status;
4332
4333 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
4334 struct nfs4_fs_locations,
4335 fattr));
4336 if (status < 0)
4337 goto xdr_error;
4338 fattr->valid |= status;
4339
4340 status = decode_attr_mode(xdr, bitmap, &fmode);
4341 if (status < 0)
4342 goto xdr_error;
4343 if (status != 0) {
4344 fattr->mode |= fmode;
4345 fattr->valid |= status;
4346 }
4347
4348 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4349 if (status < 0)
4350 goto xdr_error;
4351 fattr->valid |= status;
4352
4353 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, may_sleep);
4354 if (status < 0)
4355 goto xdr_error;
4356 fattr->valid |= status;
4357
4358 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, may_sleep);
4359 if (status < 0)
4360 goto xdr_error;
4361 fattr->valid |= status;
4362
4363 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4364 if (status < 0)
4365 goto xdr_error;
4366 fattr->valid |= status;
4367
4368 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4369 if (status < 0)
4370 goto xdr_error;
4371 fattr->valid |= status;
4372
4373 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4374 if (status < 0)
4375 goto xdr_error;
4376 fattr->valid |= status;
4377
4378 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4379 if (status < 0)
4380 goto xdr_error;
4381 fattr->valid |= status;
4382
4383 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4384 if (status < 0)
4385 goto xdr_error;
4386 fattr->valid |= status;
4387
4388 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4389 if (status < 0)
4390 goto xdr_error;
4391 fattr->valid |= status;
4392
4393xdr_error:
4394 dprintk("%s: xdr returned %d\n", __func__, -status);
4395 return status;
4396}
4397
4398static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4399 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
4400{
4401 __be32 *savep;
4402 uint32_t attrlen,
4403 bitmap[3] = {0};
4404 int status;
4405
4406 status = decode_op_hdr(xdr, OP_GETATTR);
4407 if (status < 0)
4408 goto xdr_error;
4409
4410 status = decode_attr_bitmap(xdr, bitmap);
4411 if (status < 0)
4412 goto xdr_error;
4413
4414 status = decode_attr_length(xdr, &attrlen, &savep);
4415 if (status < 0)
4416 goto xdr_error;
4417
4418 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
4419 if (status < 0)
4420 goto xdr_error;
4421
4422 status = verify_attr_len(xdr, savep, attrlen);
4423xdr_error:
4424 dprintk("%s: xdr returned %d\n", __func__, -status);
4425 return status;
4426}
4427
4428static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4429 const struct nfs_server *server, int may_sleep)
4430{
4431 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
4432}
4433
4434/*
4435 * Decode potentially multiple layout types. Currently we only support
4436 * one layout driver per file system.
4437 */
4438static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4439 uint32_t *layouttype)
4440{
4441 uint32_t *p;
4442 int num;
4443
4444 p = xdr_inline_decode(xdr, 4);
4445 if (unlikely(!p))
4446 goto out_overflow;
4447 num = be32_to_cpup(p);
4448
4449 /* pNFS is not supported by the underlying file system */
4450 if (num == 0) {
4451 *layouttype = 0;
4452 return 0;
4453 }
4454 if (num > 1)
4455 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
4456 "per filesystem not supported\n", __func__);
4457
4458 /* Decode and set first layout type, move xdr->p past unused types */
4459 p = xdr_inline_decode(xdr, num * 4);
4460 if (unlikely(!p))
4461 goto out_overflow;
4462 *layouttype = be32_to_cpup(p);
4463 return 0;
4464out_overflow:
4465 print_overflow_msg(__func__, xdr);
4466 return -EIO;
4467}
4468
4469/*
4470 * The type of file system exported.
4471 * Note we must ensure that layouttype is set in any non-error case.
4472 */
4473static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4474 uint32_t *layouttype)
4475{
4476 int status = 0;
4477
4478 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4479 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4480 return -EIO;
4481 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4482 status = decode_first_pnfs_layout_type(xdr, layouttype);
4483 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4484 } else
4485 *layouttype = 0;
4486 return status;
4487}
4488
4489/*
4490 * The prefered block size for layout directed io
4491 */
4492static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4493 uint32_t *res)
4494{
4495 __be32 *p;
4496
4497 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4498 *res = 0;
4499 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4500 p = xdr_inline_decode(xdr, 4);
4501 if (unlikely(!p)) {
4502 print_overflow_msg(__func__, xdr);
4503 return -EIO;
4504 }
4505 *res = be32_to_cpup(p);
4506 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4507 }
4508 return 0;
4509}
4510
4511static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4512{
4513 __be32 *savep;
4514 uint32_t attrlen, bitmap[3];
4515 int status;
4516
4517 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4518 goto xdr_error;
4519 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4520 goto xdr_error;
4521 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4522 goto xdr_error;
4523
4524 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4525
4526 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4527 goto xdr_error;
4528 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4529 goto xdr_error;
4530 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4531 goto xdr_error;
4532 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4533 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4534 goto xdr_error;
4535 fsinfo->wtpref = fsinfo->wtmax;
4536 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4537 if (status != 0)
4538 goto xdr_error;
4539 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4540 if (status != 0)
4541 goto xdr_error;
4542 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4543 if (status)
4544 goto xdr_error;
4545
4546 status = verify_attr_len(xdr, savep, attrlen);
4547xdr_error:
4548 dprintk("%s: xdr returned %d!\n", __func__, -status);
4549 return status;
4550}
4551
4552static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4553{
4554 __be32 *p;
4555 uint32_t len;
4556 int status;
4557
4558 /* Zero handle first to allow comparisons */
4559 memset(fh, 0, sizeof(*fh));
4560
4561 status = decode_op_hdr(xdr, OP_GETFH);
4562 if (status)
4563 return status;
4564
4565 p = xdr_inline_decode(xdr, 4);
4566 if (unlikely(!p))
4567 goto out_overflow;
4568 len = be32_to_cpup(p);
4569 if (len > NFS4_FHSIZE)
4570 return -EIO;
4571 fh->size = len;
4572 p = xdr_inline_decode(xdr, len);
4573 if (unlikely(!p))
4574 goto out_overflow;
4575 memcpy(fh->data, p, len);
4576 return 0;
4577out_overflow:
4578 print_overflow_msg(__func__, xdr);
4579 return -EIO;
4580}
4581
4582static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4583{
4584 int status;
4585
4586 status = decode_op_hdr(xdr, OP_LINK);
4587 if (status)
4588 return status;
4589 return decode_change_info(xdr, cinfo);
4590}
4591
4592/*
4593 * We create the owner, so we know a proper owner.id length is 4.
4594 */
4595static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4596{
4597 uint64_t offset, length, clientid;
4598 __be32 *p;
4599 uint32_t namelen, type;
4600
4601 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4602 if (unlikely(!p))
4603 goto out_overflow;
4604 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4605 p = xdr_decode_hyper(p, &length);
4606 type = be32_to_cpup(p++); /* 4 byte read */
4607 if (fl != NULL) { /* manipulate file lock */
4608 fl->fl_start = (loff_t)offset;
4609 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4610 if (length == ~(uint64_t)0)
4611 fl->fl_end = OFFSET_MAX;
4612 fl->fl_type = F_WRLCK;
4613 if (type & 1)
4614 fl->fl_type = F_RDLCK;
4615 fl->fl_pid = 0;
4616 }
4617 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4618 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4619 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4620 if (likely(p))
4621 return -NFS4ERR_DENIED;
4622out_overflow:
4623 print_overflow_msg(__func__, xdr);
4624 return -EIO;
4625}
4626
4627static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4628{
4629 int status;
4630
4631 status = decode_op_hdr(xdr, OP_LOCK);
4632 if (status == -EIO)
4633 goto out;
4634 if (status == 0) {
4635 status = decode_stateid(xdr, &res->stateid);
4636 if (unlikely(status))
4637 goto out;
4638 } else if (status == -NFS4ERR_DENIED)
4639 status = decode_lock_denied(xdr, NULL);
4640 if (res->open_seqid != NULL)
4641 nfs_increment_open_seqid(status, res->open_seqid);
4642 nfs_increment_lock_seqid(status, res->lock_seqid);
4643out:
4644 return status;
4645}
4646
4647static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4648{
4649 int status;
4650 status = decode_op_hdr(xdr, OP_LOCKT);
4651 if (status == -NFS4ERR_DENIED)
4652 return decode_lock_denied(xdr, res->denied);
4653 return status;
4654}
4655
4656static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4657{
4658 int status;
4659
4660 status = decode_op_hdr(xdr, OP_LOCKU);
4661 if (status != -EIO)
4662 nfs_increment_lock_seqid(status, res->seqid);
4663 if (status == 0)
4664 status = decode_stateid(xdr, &res->stateid);
4665 return status;
4666}
4667
4668static int decode_release_lockowner(struct xdr_stream *xdr)
4669{
4670 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4671}
4672
4673static int decode_lookup(struct xdr_stream *xdr)
4674{
4675 return decode_op_hdr(xdr, OP_LOOKUP);
4676}
4677
4678/* This is too sick! */
4679static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4680{
4681 __be32 *p;
4682 uint32_t limit_type, nblocks, blocksize;
4683
4684 p = xdr_inline_decode(xdr, 12);
4685 if (unlikely(!p))
4686 goto out_overflow;
4687 limit_type = be32_to_cpup(p++);
4688 switch (limit_type) {
4689 case 1:
4690 xdr_decode_hyper(p, maxsize);
4691 break;
4692 case 2:
4693 nblocks = be32_to_cpup(p++);
4694 blocksize = be32_to_cpup(p);
4695 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4696 }
4697 return 0;
4698out_overflow:
4699 print_overflow_msg(__func__, xdr);
4700 return -EIO;
4701}
4702
4703static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4704{
4705 __be32 *p;
4706 uint32_t delegation_type;
4707 int status;
4708
4709 p = xdr_inline_decode(xdr, 4);
4710 if (unlikely(!p))
4711 goto out_overflow;
4712 delegation_type = be32_to_cpup(p);
4713 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4714 res->delegation_type = 0;
4715 return 0;
4716 }
4717 status = decode_stateid(xdr, &res->delegation);
4718 if (unlikely(status))
4719 return status;
4720 p = xdr_inline_decode(xdr, 4);
4721 if (unlikely(!p))
4722 goto out_overflow;
4723 res->do_recall = be32_to_cpup(p);
4724
4725 switch (delegation_type) {
4726 case NFS4_OPEN_DELEGATE_READ:
4727 res->delegation_type = FMODE_READ;
4728 break;
4729 case NFS4_OPEN_DELEGATE_WRITE:
4730 res->delegation_type = FMODE_WRITE|FMODE_READ;
4731 if (decode_space_limit(xdr, &res->maxsize) < 0)
4732 return -EIO;
4733 }
4734 return decode_ace(xdr, NULL, res->server->nfs_client);
4735out_overflow:
4736 print_overflow_msg(__func__, xdr);
4737 return -EIO;
4738}
4739
4740static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4741{
4742 __be32 *p;
4743 uint32_t savewords, bmlen, i;
4744 int status;
4745
4746 status = decode_op_hdr(xdr, OP_OPEN);
4747 if (status != -EIO)
4748 nfs_increment_open_seqid(status, res->seqid);
4749 if (!status)
4750 status = decode_stateid(xdr, &res->stateid);
4751 if (unlikely(status))
4752 return status;
4753
4754 decode_change_info(xdr, &res->cinfo);
4755
4756 p = xdr_inline_decode(xdr, 8);
4757 if (unlikely(!p))
4758 goto out_overflow;
4759 res->rflags = be32_to_cpup(p++);
4760 bmlen = be32_to_cpup(p);
4761 if (bmlen > 10)
4762 goto xdr_error;
4763
4764 p = xdr_inline_decode(xdr, bmlen << 2);
4765 if (unlikely(!p))
4766 goto out_overflow;
4767 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4768 for (i = 0; i < savewords; ++i)
4769 res->attrset[i] = be32_to_cpup(p++);
4770 for (; i < NFS4_BITMAP_SIZE; i++)
4771 res->attrset[i] = 0;
4772
4773 return decode_delegation(xdr, res);
4774xdr_error:
4775 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4776 return -EIO;
4777out_overflow:
4778 print_overflow_msg(__func__, xdr);
4779 return -EIO;
4780}
4781
4782static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4783{
4784 int status;
4785
4786 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4787 if (status != -EIO)
4788 nfs_increment_open_seqid(status, res->seqid);
4789 if (!status)
4790 status = decode_stateid(xdr, &res->stateid);
4791 return status;
4792}
4793
4794static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4795{
4796 int status;
4797
4798 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4799 if (status != -EIO)
4800 nfs_increment_open_seqid(status, res->seqid);
4801 if (!status)
4802 status = decode_stateid(xdr, &res->stateid);
4803 return status;
4804}
4805
4806static int decode_putfh(struct xdr_stream *xdr)
4807{
4808 return decode_op_hdr(xdr, OP_PUTFH);
4809}
4810
4811static int decode_putrootfh(struct xdr_stream *xdr)
4812{
4813 return decode_op_hdr(xdr, OP_PUTROOTFH);
4814}
4815
4816static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4817{
4818 struct kvec *iov = req->rq_rcv_buf.head;
4819 __be32 *p;
4820 uint32_t count, eof, recvd, hdrlen;
4821 int status;
4822
4823 status = decode_op_hdr(xdr, OP_READ);
4824 if (status)
4825 return status;
4826 p = xdr_inline_decode(xdr, 8);
4827 if (unlikely(!p))
4828 goto out_overflow;
4829 eof = be32_to_cpup(p++);
4830 count = be32_to_cpup(p);
4831 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
4832 recvd = req->rq_rcv_buf.len - hdrlen;
4833 if (count > recvd) {
4834 dprintk("NFS: server cheating in read reply: "
4835 "count %u > recvd %u\n", count, recvd);
4836 count = recvd;
4837 eof = 0;
4838 }
4839 xdr_read_pages(xdr, count);
4840 res->eof = eof;
4841 res->count = count;
4842 return 0;
4843out_overflow:
4844 print_overflow_msg(__func__, xdr);
4845 return -EIO;
4846}
4847
4848static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4849{
4850 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4851 struct kvec *iov = rcvbuf->head;
4852 size_t hdrlen;
4853 u32 recvd, pglen = rcvbuf->page_len;
4854 int status;
4855
4856 status = decode_op_hdr(xdr, OP_READDIR);
4857 if (!status)
4858 status = decode_verifier(xdr, readdir->verifier.data);
4859 if (unlikely(status))
4860 return status;
4861 dprintk("%s: verifier = %08x:%08x\n",
4862 __func__,
4863 ((u32 *)readdir->verifier.data)[0],
4864 ((u32 *)readdir->verifier.data)[1]);
4865
4866
4867 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4868 recvd = rcvbuf->len - hdrlen;
4869 if (pglen > recvd)
4870 pglen = recvd;
4871 xdr_read_pages(xdr, pglen);
4872
4873
4874 return pglen;
4875}
4876
4877static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4878{
4879 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4880 struct kvec *iov = rcvbuf->head;
4881 size_t hdrlen;
4882 u32 len, recvd;
4883 __be32 *p;
4884 int status;
4885
4886 status = decode_op_hdr(xdr, OP_READLINK);
4887 if (status)
4888 return status;
4889
4890 /* Convert length of symlink */
4891 p = xdr_inline_decode(xdr, 4);
4892 if (unlikely(!p))
4893 goto out_overflow;
4894 len = be32_to_cpup(p);
4895 if (len >= rcvbuf->page_len || len <= 0) {
4896 dprintk("nfs: server returned giant symlink!\n");
4897 return -ENAMETOOLONG;
4898 }
4899 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4900 recvd = req->rq_rcv_buf.len - hdrlen;
4901 if (recvd < len) {
4902 dprintk("NFS: server cheating in readlink reply: "
4903 "count %u > recvd %u\n", len, recvd);
4904 return -EIO;
4905 }
4906 xdr_read_pages(xdr, len);
4907 /*
4908 * The XDR encode routine has set things up so that
4909 * the link text will be copied directly into the
4910 * buffer. We just have to do overflow-checking,
4911 * and and null-terminate the text (the VFS expects
4912 * null-termination).
4913 */
4914 xdr_terminate_string(rcvbuf, len);
4915 return 0;
4916out_overflow:
4917 print_overflow_msg(__func__, xdr);
4918 return -EIO;
4919}
4920
4921static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4922{
4923 int status;
4924
4925 status = decode_op_hdr(xdr, OP_REMOVE);
4926 if (status)
4927 goto out;
4928 status = decode_change_info(xdr, cinfo);
4929out:
4930 return status;
4931}
4932
4933static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4934 struct nfs4_change_info *new_cinfo)
4935{
4936 int status;
4937
4938 status = decode_op_hdr(xdr, OP_RENAME);
4939 if (status)
4940 goto out;
4941 if ((status = decode_change_info(xdr, old_cinfo)))
4942 goto out;
4943 status = decode_change_info(xdr, new_cinfo);
4944out:
4945 return status;
4946}
4947
4948static int decode_renew(struct xdr_stream *xdr)
4949{
4950 return decode_op_hdr(xdr, OP_RENEW);
4951}
4952
4953static int
4954decode_restorefh(struct xdr_stream *xdr)
4955{
4956 return decode_op_hdr(xdr, OP_RESTOREFH);
4957}
4958
4959static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4960 size_t *acl_len)
4961{
4962 __be32 *savep;
4963 uint32_t attrlen,
4964 bitmap[3] = {0};
4965 struct kvec *iov = req->rq_rcv_buf.head;
4966 int status;
4967
4968 *acl_len = 0;
4969 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4970 goto out;
4971 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4972 goto out;
4973 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4974 goto out;
4975
4976 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4977 return -EIO;
4978 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4979 size_t hdrlen;
4980 u32 recvd;
4981
4982 /* We ignore &savep and don't do consistency checks on
4983 * the attr length. Let userspace figure it out.... */
4984 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4985 recvd = req->rq_rcv_buf.len - hdrlen;
4986 if (attrlen > recvd) {
4987 dprintk("NFS: server cheating in getattr"
4988 " acl reply: attrlen %u > recvd %u\n",
4989 attrlen, recvd);
4990 return -EINVAL;
4991 }
4992 xdr_read_pages(xdr, attrlen);
4993 *acl_len = attrlen;
4994 } else
4995 status = -EOPNOTSUPP;
4996
4997out:
4998 return status;
4999}
5000
5001static int
5002decode_savefh(struct xdr_stream *xdr)
5003{
5004 return decode_op_hdr(xdr, OP_SAVEFH);
5005}
5006
5007static int decode_setattr(struct xdr_stream *xdr)
5008{
5009 __be32 *p;
5010 uint32_t bmlen;
5011 int status;
5012
5013 status = decode_op_hdr(xdr, OP_SETATTR);
5014 if (status)
5015 return status;
5016 p = xdr_inline_decode(xdr, 4);
5017 if (unlikely(!p))
5018 goto out_overflow;
5019 bmlen = be32_to_cpup(p);
5020 p = xdr_inline_decode(xdr, bmlen << 2);
5021 if (likely(p))
5022 return 0;
5023out_overflow:
5024 print_overflow_msg(__func__, xdr);
5025 return -EIO;
5026}
5027
5028static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5029{
5030 __be32 *p;
5031 uint32_t opnum;
5032 int32_t nfserr;
5033
5034 p = xdr_inline_decode(xdr, 8);
5035 if (unlikely(!p))
5036 goto out_overflow;
5037 opnum = be32_to_cpup(p++);
5038 if (opnum != OP_SETCLIENTID) {
5039 dprintk("nfs: decode_setclientid: Server returned operation"
5040 " %d\n", opnum);
5041 return -EIO;
5042 }
5043 nfserr = be32_to_cpup(p);
5044 if (nfserr == NFS_OK) {
5045 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5046 if (unlikely(!p))
5047 goto out_overflow;
5048 p = xdr_decode_hyper(p, &res->clientid);
5049 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5050 } else if (nfserr == NFSERR_CLID_INUSE) {
5051 uint32_t len;
5052
5053 /* skip netid string */
5054 p = xdr_inline_decode(xdr, 4);
5055 if (unlikely(!p))
5056 goto out_overflow;
5057 len = be32_to_cpup(p);
5058 p = xdr_inline_decode(xdr, len);
5059 if (unlikely(!p))
5060 goto out_overflow;
5061
5062 /* skip uaddr string */
5063 p = xdr_inline_decode(xdr, 4);
5064 if (unlikely(!p))
5065 goto out_overflow;
5066 len = be32_to_cpup(p);
5067 p = xdr_inline_decode(xdr, len);
5068 if (unlikely(!p))
5069 goto out_overflow;
5070 return -NFSERR_CLID_INUSE;
5071 } else
5072 return nfs4_stat_to_errno(nfserr);
5073
5074 return 0;
5075out_overflow:
5076 print_overflow_msg(__func__, xdr);
5077 return -EIO;
5078}
5079
5080static int decode_setclientid_confirm(struct xdr_stream *xdr)
5081{
5082 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5083}
5084
5085static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5086{
5087 __be32 *p;
5088 int status;
5089
5090 status = decode_op_hdr(xdr, OP_WRITE);
5091 if (status)
5092 return status;
5093
5094 p = xdr_inline_decode(xdr, 16);
5095 if (unlikely(!p))
5096 goto out_overflow;
5097 res->count = be32_to_cpup(p++);
5098 res->verf->committed = be32_to_cpup(p++);
5099 memcpy(res->verf->verifier, p, 8);
5100 return 0;
5101out_overflow:
5102 print_overflow_msg(__func__, xdr);
5103 return -EIO;
5104}
5105
5106static int decode_delegreturn(struct xdr_stream *xdr)
5107{
5108 return decode_op_hdr(xdr, OP_DELEGRETURN);
5109}
5110
5111static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5112{
5113 __be32 *p;
5114
5115 p = xdr_inline_decode(xdr, 4);
5116 if (unlikely(!p))
5117 goto out_overflow;
5118 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5119 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5120 goto out_err;
5121
5122 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5123 if (unlikely(!p))
5124 goto out_overflow;
5125 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5126
5127 p = xdr_inline_decode(xdr, 8);
5128 if (unlikely(!p))
5129 goto out_overflow;
5130 flavor->gss.qop4 = be32_to_cpup(p++);
5131 flavor->gss.service = be32_to_cpup(p);
5132
5133 return 0;
5134
5135out_overflow:
5136 print_overflow_msg(__func__, xdr);
5137 return -EIO;
5138out_err:
5139 return -EINVAL;
5140}
5141
5142static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5143{
5144 struct nfs4_secinfo_flavor *sec_flavor;
5145 int status;
5146 __be32 *p;
5147 int i, num_flavors;
5148
5149 status = decode_op_hdr(xdr, OP_SECINFO);
5150 if (status)
5151 goto out;
5152 p = xdr_inline_decode(xdr, 4);
5153 if (unlikely(!p))
5154 goto out_overflow;
5155
5156 res->flavors->num_flavors = 0;
5157 num_flavors = be32_to_cpup(p);
5158
5159 for (i = 0; i < num_flavors; i++) {
5160 sec_flavor = &res->flavors->flavors[i];
5161 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5162 break;
5163
5164 p = xdr_inline_decode(xdr, 4);
5165 if (unlikely(!p))
5166 goto out_overflow;
5167 sec_flavor->flavor = be32_to_cpup(p);
5168
5169 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5170 status = decode_secinfo_gss(xdr, sec_flavor);
5171 if (status)
5172 goto out;
5173 }
5174 res->flavors->num_flavors++;
5175 }
5176
5177out:
5178 return status;
5179out_overflow:
5180 print_overflow_msg(__func__, xdr);
5181 return -EIO;
5182}
5183
5184#if defined(CONFIG_NFS_V4_1)
5185static int decode_exchange_id(struct xdr_stream *xdr,
5186 struct nfs41_exchange_id_res *res)
5187{
5188 __be32 *p;
5189 uint32_t dummy;
5190 char *dummy_str;
5191 int status;
5192 struct nfs_client *clp = res->client;
5193
5194 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5195 if (status)
5196 return status;
5197
5198 p = xdr_inline_decode(xdr, 8);
5199 if (unlikely(!p))
5200 goto out_overflow;
5201 xdr_decode_hyper(p, &clp->cl_clientid);
5202 p = xdr_inline_decode(xdr, 12);
5203 if (unlikely(!p))
5204 goto out_overflow;
5205 clp->cl_seqid = be32_to_cpup(p++);
5206 clp->cl_exchange_flags = be32_to_cpup(p++);
5207
5208 /* We ask for SP4_NONE */
5209 dummy = be32_to_cpup(p);
5210 if (dummy != SP4_NONE)
5211 return -EIO;
5212
5213 /* Throw away minor_id */
5214 p = xdr_inline_decode(xdr, 8);
5215 if (unlikely(!p))
5216 goto out_overflow;
5217
5218 /* Throw away Major id */
5219 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5220 if (unlikely(status))
5221 return status;
5222
5223 /* Save server_scope */
5224 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5225 if (unlikely(status))
5226 return status;
5227
5228 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5229 return -EIO;
5230
5231 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5232 res->server_scope->server_scope_sz = dummy;
5233
5234 /* Throw away Implementation id array */
5235 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5236 if (unlikely(status))
5237 return status;
5238
5239 return 0;
5240out_overflow:
5241 print_overflow_msg(__func__, xdr);
5242 return -EIO;
5243}
5244
5245static int decode_chan_attrs(struct xdr_stream *xdr,
5246 struct nfs4_channel_attrs *attrs)
5247{
5248 __be32 *p;
5249 u32 nr_attrs, val;
5250
5251 p = xdr_inline_decode(xdr, 28);
5252 if (unlikely(!p))
5253 goto out_overflow;
5254 val = be32_to_cpup(p++); /* headerpadsz */
5255 if (val)
5256 return -EINVAL; /* no support for header padding yet */
5257 attrs->max_rqst_sz = be32_to_cpup(p++);
5258 attrs->max_resp_sz = be32_to_cpup(p++);
5259 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5260 attrs->max_ops = be32_to_cpup(p++);
5261 attrs->max_reqs = be32_to_cpup(p++);
5262 nr_attrs = be32_to_cpup(p);
5263 if (unlikely(nr_attrs > 1)) {
5264 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
5265 __func__, nr_attrs);
5266 return -EINVAL;
5267 }
5268 if (nr_attrs == 1) {
5269 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5270 if (unlikely(!p))
5271 goto out_overflow;
5272 }
5273 return 0;
5274out_overflow:
5275 print_overflow_msg(__func__, xdr);
5276 return -EIO;
5277}
5278
5279static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5280{
5281 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5282}
5283
5284static int decode_create_session(struct xdr_stream *xdr,
5285 struct nfs41_create_session_res *res)
5286{
5287 __be32 *p;
5288 int status;
5289 struct nfs_client *clp = res->client;
5290 struct nfs4_session *session = clp->cl_session;
5291
5292 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5293 if (!status)
5294 status = decode_sessionid(xdr, &session->sess_id);
5295 if (unlikely(status))
5296 return status;
5297
5298 /* seqid, flags */
5299 p = xdr_inline_decode(xdr, 8);
5300 if (unlikely(!p))
5301 goto out_overflow;
5302 clp->cl_seqid = be32_to_cpup(p++);
5303 session->flags = be32_to_cpup(p);
5304
5305 /* Channel attributes */
5306 status = decode_chan_attrs(xdr, &session->fc_attrs);
5307 if (!status)
5308 status = decode_chan_attrs(xdr, &session->bc_attrs);
5309 return status;
5310out_overflow:
5311 print_overflow_msg(__func__, xdr);
5312 return -EIO;
5313}
5314
5315static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5316{
5317 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5318}
5319
5320static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5321{
5322 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5323}
5324#endif /* CONFIG_NFS_V4_1 */
5325
5326static int decode_sequence(struct xdr_stream *xdr,
5327 struct nfs4_sequence_res *res,
5328 struct rpc_rqst *rqstp)
5329{
5330#if defined(CONFIG_NFS_V4_1)
5331 struct nfs4_sessionid id;
5332 u32 dummy;
5333 int status;
5334 __be32 *p;
5335
5336 if (!res->sr_session)
5337 return 0;
5338
5339 status = decode_op_hdr(xdr, OP_SEQUENCE);
5340 if (!status)
5341 status = decode_sessionid(xdr, &id);
5342 if (unlikely(status))
5343 goto out_err;
5344
5345 /*
5346 * If the server returns different values for sessionID, slotID or
5347 * sequence number, the server is looney tunes.
5348 */
5349 status = -EREMOTEIO;
5350
5351 if (memcmp(id.data, res->sr_session->sess_id.data,
5352 NFS4_MAX_SESSIONID_LEN)) {
5353 dprintk("%s Invalid session id\n", __func__);
5354 goto out_err;
5355 }
5356
5357 p = xdr_inline_decode(xdr, 20);
5358 if (unlikely(!p))
5359 goto out_overflow;
5360
5361 /* seqid */
5362 dummy = be32_to_cpup(p++);
5363 if (dummy != res->sr_slot->seq_nr) {
5364 dprintk("%s Invalid sequence number\n", __func__);
5365 goto out_err;
5366 }
5367 /* slot id */
5368 dummy = be32_to_cpup(p++);
5369 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5370 dprintk("%s Invalid slot id\n", __func__);
5371 goto out_err;
5372 }
5373 /* highest slot id - currently not processed */
5374 dummy = be32_to_cpup(p++);
5375 /* target highest slot id - currently not processed */
5376 dummy = be32_to_cpup(p++);
5377 /* result flags */
5378 res->sr_status_flags = be32_to_cpup(p);
5379 status = 0;
5380out_err:
5381 res->sr_status = status;
5382 return status;
5383out_overflow:
5384 print_overflow_msg(__func__, xdr);
5385 status = -EIO;
5386 goto out_err;
5387#else /* CONFIG_NFS_V4_1 */
5388 return 0;
5389#endif /* CONFIG_NFS_V4_1 */
5390}
5391
5392#if defined(CONFIG_NFS_V4_1)
5393/*
5394 * TODO: Need to handle case when EOF != true;
5395 */
5396static int decode_getdevicelist(struct xdr_stream *xdr,
5397 struct pnfs_devicelist *res)
5398{
5399 __be32 *p;
5400 int status, i;
5401 struct nfs_writeverf verftemp;
5402
5403 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5404 if (status)
5405 return status;
5406
5407 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5408 if (unlikely(!p))
5409 goto out_overflow;
5410
5411 /* TODO: Skip cookie for now */
5412 p += 2;
5413
5414 /* Read verifier */
5415 p = xdr_decode_opaque_fixed(p, verftemp.verifier, 8);
5416
5417 res->num_devs = be32_to_cpup(p);
5418
5419 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5420
5421 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5422 printk(KERN_ERR "%s too many result dev_num %u\n",
5423 __func__, res->num_devs);
5424 return -EIO;
5425 }
5426
5427 p = xdr_inline_decode(xdr,
5428 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5429 if (unlikely(!p))
5430 goto out_overflow;
5431 for (i = 0; i < res->num_devs; i++)
5432 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5433 NFS4_DEVICEID4_SIZE);
5434 res->eof = be32_to_cpup(p);
5435 return 0;
5436out_overflow:
5437 print_overflow_msg(__func__, xdr);
5438 return -EIO;
5439}
5440
5441static int decode_getdeviceinfo(struct xdr_stream *xdr,
5442 struct pnfs_device *pdev)
5443{
5444 __be32 *p;
5445 uint32_t len, type;
5446 int status;
5447
5448 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5449 if (status) {
5450 if (status == -ETOOSMALL) {
5451 p = xdr_inline_decode(xdr, 4);
5452 if (unlikely(!p))
5453 goto out_overflow;
5454 pdev->mincount = be32_to_cpup(p);
5455 dprintk("%s: Min count too small. mincnt = %u\n",
5456 __func__, pdev->mincount);
5457 }
5458 return status;
5459 }
5460
5461 p = xdr_inline_decode(xdr, 8);
5462 if (unlikely(!p))
5463 goto out_overflow;
5464 type = be32_to_cpup(p++);
5465 if (type != pdev->layout_type) {
5466 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5467 __func__, pdev->layout_type, type);
5468 return -EINVAL;
5469 }
5470 /*
5471 * Get the length of the opaque device_addr4. xdr_read_pages places
5472 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5473 * and places the remaining xdr data in xdr_buf->tail
5474 */
5475 pdev->mincount = be32_to_cpup(p);
5476 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5477
5478 /* Parse notification bitmap, verifying that it is zero. */
5479 p = xdr_inline_decode(xdr, 4);
5480 if (unlikely(!p))
5481 goto out_overflow;
5482 len = be32_to_cpup(p);
5483 if (len) {
5484 uint32_t i;
5485
5486 p = xdr_inline_decode(xdr, 4 * len);
5487 if (unlikely(!p))
5488 goto out_overflow;
5489 for (i = 0; i < len; i++, p++) {
5490 if (be32_to_cpup(p)) {
5491 dprintk("%s: notifications not supported\n",
5492 __func__);
5493 return -EIO;
5494 }
5495 }
5496 }
5497 return 0;
5498out_overflow:
5499 print_overflow_msg(__func__, xdr);
5500 return -EIO;
5501}
5502
5503static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5504 struct nfs4_layoutget_res *res)
5505{
5506 __be32 *p;
5507 int status;
5508 u32 layout_count;
5509 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5510 struct kvec *iov = rcvbuf->head;
5511 u32 hdrlen, recvd;
5512
5513 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5514 if (status)
5515 return status;
5516 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
5517 if (unlikely(!p))
5518 goto out_overflow;
5519 res->return_on_close = be32_to_cpup(p++);
5520 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
5521 layout_count = be32_to_cpup(p);
5522 if (!layout_count) {
5523 dprintk("%s: server responded with empty layout array\n",
5524 __func__);
5525 return -EINVAL;
5526 }
5527
5528 p = xdr_inline_decode(xdr, 28);
5529 if (unlikely(!p))
5530 goto out_overflow;
5531 p = xdr_decode_hyper(p, &res->range.offset);
5532 p = xdr_decode_hyper(p, &res->range.length);
5533 res->range.iomode = be32_to_cpup(p++);
5534 res->type = be32_to_cpup(p++);
5535 res->layoutp->len = be32_to_cpup(p);
5536
5537 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5538 __func__,
5539 (unsigned long)res->range.offset,
5540 (unsigned long)res->range.length,
5541 res->range.iomode,
5542 res->type,
5543 res->layoutp->len);
5544
5545 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
5546 recvd = req->rq_rcv_buf.len - hdrlen;
5547 if (res->layoutp->len > recvd) {
5548 dprintk("NFS: server cheating in layoutget reply: "
5549 "layout len %u > recvd %u\n",
5550 res->layoutp->len, recvd);
5551 return -EINVAL;
5552 }
5553
5554 xdr_read_pages(xdr, res->layoutp->len);
5555
5556 if (layout_count > 1) {
5557 /* We only handle a length one array at the moment. Any
5558 * further entries are just ignored. Note that this means
5559 * the client may see a response that is less than the
5560 * minimum it requested.
5561 */
5562 dprintk("%s: server responded with %d layouts, dropping tail\n",
5563 __func__, layout_count);
5564 }
5565
5566 return 0;
5567out_overflow:
5568 print_overflow_msg(__func__, xdr);
5569 return -EIO;
5570}
5571
5572static int decode_layoutreturn(struct xdr_stream *xdr,
5573 struct nfs4_layoutreturn_res *res)
5574{
5575 __be32 *p;
5576 int status;
5577
5578 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5579 if (status)
5580 return status;
5581 p = xdr_inline_decode(xdr, 4);
5582 if (unlikely(!p))
5583 goto out_overflow;
5584 res->lrs_present = be32_to_cpup(p);
5585 if (res->lrs_present)
5586 status = decode_stateid(xdr, &res->stateid);
5587 return status;
5588out_overflow:
5589 print_overflow_msg(__func__, xdr);
5590 return -EIO;
5591}
5592
5593static int decode_layoutcommit(struct xdr_stream *xdr,
5594 struct rpc_rqst *req,
5595 struct nfs4_layoutcommit_res *res)
5596{
5597 __be32 *p;
5598 __u32 sizechanged;
5599 int status;
5600
5601 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5602 res->status = status;
5603 if (status)
5604 return status;
5605
5606 p = xdr_inline_decode(xdr, 4);
5607 if (unlikely(!p))
5608 goto out_overflow;
5609 sizechanged = be32_to_cpup(p);
5610
5611 if (sizechanged) {
5612 /* throw away new size */
5613 p = xdr_inline_decode(xdr, 8);
5614 if (unlikely(!p))
5615 goto out_overflow;
5616 }
5617 return 0;
5618out_overflow:
5619 print_overflow_msg(__func__, xdr);
5620 return -EIO;
5621}
5622
5623static int decode_test_stateid(struct xdr_stream *xdr,
5624 struct nfs41_test_stateid_res *res)
5625{
5626 __be32 *p;
5627 int status;
5628 int num_res;
5629
5630 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5631 if (status)
5632 return status;
5633
5634 p = xdr_inline_decode(xdr, 4);
5635 if (unlikely(!p))
5636 goto out_overflow;
5637 num_res = be32_to_cpup(p++);
5638 if (num_res != 1)
5639 goto out;
5640
5641 p = xdr_inline_decode(xdr, 4);
5642 if (unlikely(!p))
5643 goto out_overflow;
5644 res->status = be32_to_cpup(p++);
5645 return res->status;
5646out_overflow:
5647 print_overflow_msg(__func__, xdr);
5648out:
5649 return -EIO;
5650}
5651
5652static int decode_free_stateid(struct xdr_stream *xdr,
5653 struct nfs41_free_stateid_res *res)
5654{
5655 __be32 *p;
5656 int status;
5657
5658 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5659 if (status)
5660 return status;
5661
5662 p = xdr_inline_decode(xdr, 4);
5663 if (unlikely(!p))
5664 goto out_overflow;
5665 res->status = be32_to_cpup(p++);
5666 return res->status;
5667out_overflow:
5668 print_overflow_msg(__func__, xdr);
5669 return -EIO;
5670}
5671#endif /* CONFIG_NFS_V4_1 */
5672
5673/*
5674 * END OF "GENERIC" DECODE ROUTINES.
5675 */
5676
5677/*
5678 * Decode OPEN_DOWNGRADE response
5679 */
5680static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5681 struct xdr_stream *xdr,
5682 struct nfs_closeres *res)
5683{
5684 struct compound_hdr hdr;
5685 int status;
5686
5687 status = decode_compound_hdr(xdr, &hdr);
5688 if (status)
5689 goto out;
5690 status = decode_sequence(xdr, &res->seq_res, rqstp);
5691 if (status)
5692 goto out;
5693 status = decode_putfh(xdr);
5694 if (status)
5695 goto out;
5696 status = decode_open_downgrade(xdr, res);
5697 if (status != 0)
5698 goto out;
5699 decode_getfattr(xdr, res->fattr, res->server,
5700 !RPC_IS_ASYNC(rqstp->rq_task));
5701out:
5702 return status;
5703}
5704
5705/*
5706 * Decode ACCESS response
5707 */
5708static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5709 struct nfs4_accessres *res)
5710{
5711 struct compound_hdr hdr;
5712 int status;
5713
5714 status = decode_compound_hdr(xdr, &hdr);
5715 if (status)
5716 goto out;
5717 status = decode_sequence(xdr, &res->seq_res, rqstp);
5718 if (status)
5719 goto out;
5720 status = decode_putfh(xdr);
5721 if (status != 0)
5722 goto out;
5723 status = decode_access(xdr, res);
5724 if (status != 0)
5725 goto out;
5726 decode_getfattr(xdr, res->fattr, res->server,
5727 !RPC_IS_ASYNC(rqstp->rq_task));
5728out:
5729 return status;
5730}
5731
5732/*
5733 * Decode LOOKUP response
5734 */
5735static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5736 struct nfs4_lookup_res *res)
5737{
5738 struct compound_hdr hdr;
5739 int status;
5740
5741 status = decode_compound_hdr(xdr, &hdr);
5742 if (status)
5743 goto out;
5744 status = decode_sequence(xdr, &res->seq_res, rqstp);
5745 if (status)
5746 goto out;
5747 status = decode_putfh(xdr);
5748 if (status)
5749 goto out;
5750 status = decode_lookup(xdr);
5751 if (status)
5752 goto out;
5753 status = decode_getfh(xdr, res->fh);
5754 if (status)
5755 goto out;
5756 status = decode_getfattr(xdr, res->fattr, res->server
5757 ,!RPC_IS_ASYNC(rqstp->rq_task));
5758out:
5759 return status;
5760}
5761
5762/*
5763 * Decode LOOKUP_ROOT response
5764 */
5765static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5766 struct xdr_stream *xdr,
5767 struct nfs4_lookup_res *res)
5768{
5769 struct compound_hdr hdr;
5770 int status;
5771
5772 status = decode_compound_hdr(xdr, &hdr);
5773 if (status)
5774 goto out;
5775 status = decode_sequence(xdr, &res->seq_res, rqstp);
5776 if (status)
5777 goto out;
5778 status = decode_putrootfh(xdr);
5779 if (status)
5780 goto out;
5781 status = decode_getfh(xdr, res->fh);
5782 if (status == 0)
5783 status = decode_getfattr(xdr, res->fattr, res->server,
5784 !RPC_IS_ASYNC(rqstp->rq_task));
5785out:
5786 return status;
5787}
5788
5789/*
5790 * Decode REMOVE response
5791 */
5792static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5793 struct nfs_removeres *res)
5794{
5795 struct compound_hdr hdr;
5796 int status;
5797
5798 status = decode_compound_hdr(xdr, &hdr);
5799 if (status)
5800 goto out;
5801 status = decode_sequence(xdr, &res->seq_res, rqstp);
5802 if (status)
5803 goto out;
5804 status = decode_putfh(xdr);
5805 if (status)
5806 goto out;
5807 status = decode_remove(xdr, &res->cinfo);
5808 if (status)
5809 goto out;
5810 decode_getfattr(xdr, res->dir_attr, res->server,
5811 !RPC_IS_ASYNC(rqstp->rq_task));
5812out:
5813 return status;
5814}
5815
5816/*
5817 * Decode RENAME response
5818 */
5819static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5820 struct nfs_renameres *res)
5821{
5822 struct compound_hdr hdr;
5823 int status;
5824
5825 status = decode_compound_hdr(xdr, &hdr);
5826 if (status)
5827 goto out;
5828 status = decode_sequence(xdr, &res->seq_res, rqstp);
5829 if (status)
5830 goto out;
5831 status = decode_putfh(xdr);
5832 if (status)
5833 goto out;
5834 status = decode_savefh(xdr);
5835 if (status)
5836 goto out;
5837 status = decode_putfh(xdr);
5838 if (status)
5839 goto out;
5840 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
5841 if (status)
5842 goto out;
5843 /* Current FH is target directory */
5844 if (decode_getfattr(xdr, res->new_fattr, res->server,
5845 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5846 goto out;
5847 status = decode_restorefh(xdr);
5848 if (status)
5849 goto out;
5850 decode_getfattr(xdr, res->old_fattr, res->server,
5851 !RPC_IS_ASYNC(rqstp->rq_task));
5852out:
5853 return status;
5854}
5855
5856/*
5857 * Decode LINK response
5858 */
5859static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5860 struct nfs4_link_res *res)
5861{
5862 struct compound_hdr hdr;
5863 int status;
5864
5865 status = decode_compound_hdr(xdr, &hdr);
5866 if (status)
5867 goto out;
5868 status = decode_sequence(xdr, &res->seq_res, rqstp);
5869 if (status)
5870 goto out;
5871 status = decode_putfh(xdr);
5872 if (status)
5873 goto out;
5874 status = decode_savefh(xdr);
5875 if (status)
5876 goto out;
5877 status = decode_putfh(xdr);
5878 if (status)
5879 goto out;
5880 status = decode_link(xdr, &res->cinfo);
5881 if (status)
5882 goto out;
5883 /*
5884 * Note order: OP_LINK leaves the directory as the current
5885 * filehandle.
5886 */
5887 if (decode_getfattr(xdr, res->dir_attr, res->server,
5888 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5889 goto out;
5890 status = decode_restorefh(xdr);
5891 if (status)
5892 goto out;
5893 decode_getfattr(xdr, res->fattr, res->server,
5894 !RPC_IS_ASYNC(rqstp->rq_task));
5895out:
5896 return status;
5897}
5898
5899/*
5900 * Decode CREATE response
5901 */
5902static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5903 struct nfs4_create_res *res)
5904{
5905 struct compound_hdr hdr;
5906 int status;
5907
5908 status = decode_compound_hdr(xdr, &hdr);
5909 if (status)
5910 goto out;
5911 status = decode_sequence(xdr, &res->seq_res, rqstp);
5912 if (status)
5913 goto out;
5914 status = decode_putfh(xdr);
5915 if (status)
5916 goto out;
5917 status = decode_savefh(xdr);
5918 if (status)
5919 goto out;
5920 status = decode_create(xdr, &res->dir_cinfo);
5921 if (status)
5922 goto out;
5923 status = decode_getfh(xdr, res->fh);
5924 if (status)
5925 goto out;
5926 if (decode_getfattr(xdr, res->fattr, res->server,
5927 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5928 goto out;
5929 status = decode_restorefh(xdr);
5930 if (status)
5931 goto out;
5932 decode_getfattr(xdr, res->dir_fattr, res->server,
5933 !RPC_IS_ASYNC(rqstp->rq_task));
5934out:
5935 return status;
5936}
5937
5938/*
5939 * Decode SYMLINK response
5940 */
5941static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5942 struct nfs4_create_res *res)
5943{
5944 return nfs4_xdr_dec_create(rqstp, xdr, res);
5945}
5946
5947/*
5948 * Decode GETATTR response
5949 */
5950static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5951 struct nfs4_getattr_res *res)
5952{
5953 struct compound_hdr hdr;
5954 int status;
5955
5956 status = decode_compound_hdr(xdr, &hdr);
5957 if (status)
5958 goto out;
5959 status = decode_sequence(xdr, &res->seq_res, rqstp);
5960 if (status)
5961 goto out;
5962 status = decode_putfh(xdr);
5963 if (status)
5964 goto out;
5965 status = decode_getfattr(xdr, res->fattr, res->server,
5966 !RPC_IS_ASYNC(rqstp->rq_task));
5967out:
5968 return status;
5969}
5970
5971/*
5972 * Encode an SETACL request
5973 */
5974static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
5975 struct nfs_setaclargs *args)
5976{
5977 struct compound_hdr hdr = {
5978 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
5979 };
5980
5981 encode_compound_hdr(xdr, req, &hdr);
5982 encode_sequence(xdr, &args->seq_args, &hdr);
5983 encode_putfh(xdr, args->fh, &hdr);
5984 encode_setacl(xdr, args, &hdr);
5985 encode_nops(&hdr);
5986}
5987
5988/*
5989 * Decode SETACL response
5990 */
5991static int
5992nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5993 struct nfs_setaclres *res)
5994{
5995 struct compound_hdr hdr;
5996 int status;
5997
5998 status = decode_compound_hdr(xdr, &hdr);
5999 if (status)
6000 goto out;
6001 status = decode_sequence(xdr, &res->seq_res, rqstp);
6002 if (status)
6003 goto out;
6004 status = decode_putfh(xdr);
6005 if (status)
6006 goto out;
6007 status = decode_setattr(xdr);
6008out:
6009 return status;
6010}
6011
6012/*
6013 * Decode GETACL response
6014 */
6015static int
6016nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6017 struct nfs_getaclres *res)
6018{
6019 struct compound_hdr hdr;
6020 int status;
6021
6022 status = decode_compound_hdr(xdr, &hdr);
6023 if (status)
6024 goto out;
6025 status = decode_sequence(xdr, &res->seq_res, rqstp);
6026 if (status)
6027 goto out;
6028 status = decode_putfh(xdr);
6029 if (status)
6030 goto out;
6031 status = decode_getacl(xdr, rqstp, &res->acl_len);
6032
6033out:
6034 return status;
6035}
6036
6037/*
6038 * Decode CLOSE response
6039 */
6040static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6041 struct nfs_closeres *res)
6042{
6043 struct compound_hdr hdr;
6044 int status;
6045
6046 status = decode_compound_hdr(xdr, &hdr);
6047 if (status)
6048 goto out;
6049 status = decode_sequence(xdr, &res->seq_res, rqstp);
6050 if (status)
6051 goto out;
6052 status = decode_putfh(xdr);
6053 if (status)
6054 goto out;
6055 status = decode_close(xdr, res);
6056 if (status != 0)
6057 goto out;
6058 /*
6059 * Note: Server may do delete on close for this file
6060 * in which case the getattr call will fail with
6061 * an ESTALE error. Shouldn't be a problem,
6062 * though, since fattr->valid will remain unset.
6063 */
6064 decode_getfattr(xdr, res->fattr, res->server,
6065 !RPC_IS_ASYNC(rqstp->rq_task));
6066out:
6067 return status;
6068}
6069
6070/*
6071 * Decode OPEN response
6072 */
6073static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6074 struct nfs_openres *res)
6075{
6076 struct compound_hdr hdr;
6077 int status;
6078
6079 status = decode_compound_hdr(xdr, &hdr);
6080 if (status)
6081 goto out;
6082 status = decode_sequence(xdr, &res->seq_res, rqstp);
6083 if (status)
6084 goto out;
6085 status = decode_putfh(xdr);
6086 if (status)
6087 goto out;
6088 status = decode_savefh(xdr);
6089 if (status)
6090 goto out;
6091 status = decode_open(xdr, res);
6092 if (status)
6093 goto out;
6094 if (decode_getfh(xdr, &res->fh) != 0)
6095 goto out;
6096 if (decode_getfattr(xdr, res->f_attr, res->server,
6097 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
6098 goto out;
6099 if (decode_restorefh(xdr) != 0)
6100 goto out;
6101 decode_getfattr(xdr, res->dir_attr, res->server,
6102 !RPC_IS_ASYNC(rqstp->rq_task));
6103out:
6104 return status;
6105}
6106
6107/*
6108 * Decode OPEN_CONFIRM response
6109 */
6110static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6111 struct xdr_stream *xdr,
6112 struct nfs_open_confirmres *res)
6113{
6114 struct compound_hdr hdr;
6115 int status;
6116
6117 status = decode_compound_hdr(xdr, &hdr);
6118 if (status)
6119 goto out;
6120 status = decode_putfh(xdr);
6121 if (status)
6122 goto out;
6123 status = decode_open_confirm(xdr, res);
6124out:
6125 return status;
6126}
6127
6128/*
6129 * Decode OPEN response
6130 */
6131static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6132 struct xdr_stream *xdr,
6133 struct nfs_openres *res)
6134{
6135 struct compound_hdr hdr;
6136 int status;
6137
6138 status = decode_compound_hdr(xdr, &hdr);
6139 if (status)
6140 goto out;
6141 status = decode_sequence(xdr, &res->seq_res, rqstp);
6142 if (status)
6143 goto out;
6144 status = decode_putfh(xdr);
6145 if (status)
6146 goto out;
6147 status = decode_open(xdr, res);
6148 if (status)
6149 goto out;
6150 decode_getfattr(xdr, res->f_attr, res->server,
6151 !RPC_IS_ASYNC(rqstp->rq_task));
6152out:
6153 return status;
6154}
6155
6156/*
6157 * Decode SETATTR response
6158 */
6159static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6160 struct xdr_stream *xdr,
6161 struct nfs_setattrres *res)
6162{
6163 struct compound_hdr hdr;
6164 int status;
6165
6166 status = decode_compound_hdr(xdr, &hdr);
6167 if (status)
6168 goto out;
6169 status = decode_sequence(xdr, &res->seq_res, rqstp);
6170 if (status)
6171 goto out;
6172 status = decode_putfh(xdr);
6173 if (status)
6174 goto out;
6175 status = decode_setattr(xdr);
6176 if (status)
6177 goto out;
6178 decode_getfattr(xdr, res->fattr, res->server,
6179 !RPC_IS_ASYNC(rqstp->rq_task));
6180out:
6181 return status;
6182}
6183
6184/*
6185 * Decode LOCK response
6186 */
6187static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6188 struct nfs_lock_res *res)
6189{
6190 struct compound_hdr hdr;
6191 int status;
6192
6193 status = decode_compound_hdr(xdr, &hdr);
6194 if (status)
6195 goto out;
6196 status = decode_sequence(xdr, &res->seq_res, rqstp);
6197 if (status)
6198 goto out;
6199 status = decode_putfh(xdr);
6200 if (status)
6201 goto out;
6202 status = decode_lock(xdr, res);
6203out:
6204 return status;
6205}
6206
6207/*
6208 * Decode LOCKT response
6209 */
6210static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6211 struct nfs_lockt_res *res)
6212{
6213 struct compound_hdr hdr;
6214 int status;
6215
6216 status = decode_compound_hdr(xdr, &hdr);
6217 if (status)
6218 goto out;
6219 status = decode_sequence(xdr, &res->seq_res, rqstp);
6220 if (status)
6221 goto out;
6222 status = decode_putfh(xdr);
6223 if (status)
6224 goto out;
6225 status = decode_lockt(xdr, res);
6226out:
6227 return status;
6228}
6229
6230/*
6231 * Decode LOCKU response
6232 */
6233static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6234 struct nfs_locku_res *res)
6235{
6236 struct compound_hdr hdr;
6237 int status;
6238
6239 status = decode_compound_hdr(xdr, &hdr);
6240 if (status)
6241 goto out;
6242 status = decode_sequence(xdr, &res->seq_res, rqstp);
6243 if (status)
6244 goto out;
6245 status = decode_putfh(xdr);
6246 if (status)
6247 goto out;
6248 status = decode_locku(xdr, res);
6249out:
6250 return status;
6251}
6252
6253static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6254 struct xdr_stream *xdr, void *dummy)
6255{
6256 struct compound_hdr hdr;
6257 int status;
6258
6259 status = decode_compound_hdr(xdr, &hdr);
6260 if (!status)
6261 status = decode_release_lockowner(xdr);
6262 return status;
6263}
6264
6265/*
6266 * Decode READLINK response
6267 */
6268static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6269 struct xdr_stream *xdr,
6270 struct nfs4_readlink_res *res)
6271{
6272 struct compound_hdr hdr;
6273 int status;
6274
6275 status = decode_compound_hdr(xdr, &hdr);
6276 if (status)
6277 goto out;
6278 status = decode_sequence(xdr, &res->seq_res, rqstp);
6279 if (status)
6280 goto out;
6281 status = decode_putfh(xdr);
6282 if (status)
6283 goto out;
6284 status = decode_readlink(xdr, rqstp);
6285out:
6286 return status;
6287}
6288
6289/*
6290 * Decode READDIR response
6291 */
6292static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6293 struct nfs4_readdir_res *res)
6294{
6295 struct compound_hdr hdr;
6296 int status;
6297
6298 status = decode_compound_hdr(xdr, &hdr);
6299 if (status)
6300 goto out;
6301 status = decode_sequence(xdr, &res->seq_res, rqstp);
6302 if (status)
6303 goto out;
6304 status = decode_putfh(xdr);
6305 if (status)
6306 goto out;
6307 status = decode_readdir(xdr, rqstp, res);
6308out:
6309 return status;
6310}
6311
6312/*
6313 * Decode Read response
6314 */
6315static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6316 struct nfs_readres *res)
6317{
6318 struct compound_hdr hdr;
6319 int status;
6320
6321 status = decode_compound_hdr(xdr, &hdr);
6322 if (status)
6323 goto out;
6324 status = decode_sequence(xdr, &res->seq_res, rqstp);
6325 if (status)
6326 goto out;
6327 status = decode_putfh(xdr);
6328 if (status)
6329 goto out;
6330 status = decode_read(xdr, rqstp, res);
6331 if (!status)
6332 status = res->count;
6333out:
6334 return status;
6335}
6336
6337/*
6338 * Decode WRITE response
6339 */
6340static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6341 struct nfs_writeres *res)
6342{
6343 struct compound_hdr hdr;
6344 int status;
6345
6346 status = decode_compound_hdr(xdr, &hdr);
6347 if (status)
6348 goto out;
6349 status = decode_sequence(xdr, &res->seq_res, rqstp);
6350 if (status)
6351 goto out;
6352 status = decode_putfh(xdr);
6353 if (status)
6354 goto out;
6355 status = decode_write(xdr, res);
6356 if (status)
6357 goto out;
6358 if (res->fattr)
6359 decode_getfattr(xdr, res->fattr, res->server,
6360 !RPC_IS_ASYNC(rqstp->rq_task));
6361 if (!status)
6362 status = res->count;
6363out:
6364 return status;
6365}
6366
6367/*
6368 * Decode COMMIT response
6369 */
6370static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6371 struct nfs_writeres *res)
6372{
6373 struct compound_hdr hdr;
6374 int status;
6375
6376 status = decode_compound_hdr(xdr, &hdr);
6377 if (status)
6378 goto out;
6379 status = decode_sequence(xdr, &res->seq_res, rqstp);
6380 if (status)
6381 goto out;
6382 status = decode_putfh(xdr);
6383 if (status)
6384 goto out;
6385 status = decode_commit(xdr, res);
6386 if (status)
6387 goto out;
6388 if (res->fattr)
6389 decode_getfattr(xdr, res->fattr, res->server,
6390 !RPC_IS_ASYNC(rqstp->rq_task));
6391out:
6392 return status;
6393}
6394
6395/*
6396 * Decode FSINFO response
6397 */
6398static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6399 struct nfs4_fsinfo_res *res)
6400{
6401 struct compound_hdr hdr;
6402 int status;
6403
6404 status = decode_compound_hdr(xdr, &hdr);
6405 if (!status)
6406 status = decode_sequence(xdr, &res->seq_res, req);
6407 if (!status)
6408 status = decode_putfh(xdr);
6409 if (!status)
6410 status = decode_fsinfo(xdr, res->fsinfo);
6411 return status;
6412}
6413
6414/*
6415 * Decode PATHCONF response
6416 */
6417static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6418 struct nfs4_pathconf_res *res)
6419{
6420 struct compound_hdr hdr;
6421 int status;
6422
6423 status = decode_compound_hdr(xdr, &hdr);
6424 if (!status)
6425 status = decode_sequence(xdr, &res->seq_res, req);
6426 if (!status)
6427 status = decode_putfh(xdr);
6428 if (!status)
6429 status = decode_pathconf(xdr, res->pathconf);
6430 return status;
6431}
6432
6433/*
6434 * Decode STATFS response
6435 */
6436static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6437 struct nfs4_statfs_res *res)
6438{
6439 struct compound_hdr hdr;
6440 int status;
6441
6442 status = decode_compound_hdr(xdr, &hdr);
6443 if (!status)
6444 status = decode_sequence(xdr, &res->seq_res, req);
6445 if (!status)
6446 status = decode_putfh(xdr);
6447 if (!status)
6448 status = decode_statfs(xdr, res->fsstat);
6449 return status;
6450}
6451
6452/*
6453 * Decode GETATTR_BITMAP response
6454 */
6455static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6456 struct xdr_stream *xdr,
6457 struct nfs4_server_caps_res *res)
6458{
6459 struct compound_hdr hdr;
6460 int status;
6461
6462 status = decode_compound_hdr(xdr, &hdr);
6463 if (status)
6464 goto out;
6465 status = decode_sequence(xdr, &res->seq_res, req);
6466 if (status)
6467 goto out;
6468 status = decode_putfh(xdr);
6469 if (status)
6470 goto out;
6471 status = decode_server_caps(xdr, res);
6472out:
6473 return status;
6474}
6475
6476/*
6477 * Decode RENEW response
6478 */
6479static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6480 void *__unused)
6481{
6482 struct compound_hdr hdr;
6483 int status;
6484
6485 status = decode_compound_hdr(xdr, &hdr);
6486 if (!status)
6487 status = decode_renew(xdr);
6488 return status;
6489}
6490
6491/*
6492 * Decode SETCLIENTID response
6493 */
6494static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6495 struct xdr_stream *xdr,
6496 struct nfs4_setclientid_res *res)
6497{
6498 struct compound_hdr hdr;
6499 int status;
6500
6501 status = decode_compound_hdr(xdr, &hdr);
6502 if (!status)
6503 status = decode_setclientid(xdr, res);
6504 return status;
6505}
6506
6507/*
6508 * Decode SETCLIENTID_CONFIRM response
6509 */
6510static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6511 struct xdr_stream *xdr,
6512 struct nfs_fsinfo *fsinfo)
6513{
6514 struct compound_hdr hdr;
6515 int status;
6516
6517 status = decode_compound_hdr(xdr, &hdr);
6518 if (!status)
6519 status = decode_setclientid_confirm(xdr);
6520 if (!status)
6521 status = decode_putrootfh(xdr);
6522 if (!status)
6523 status = decode_fsinfo(xdr, fsinfo);
6524 return status;
6525}
6526
6527/*
6528 * Decode DELEGRETURN response
6529 */
6530static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6531 struct xdr_stream *xdr,
6532 struct nfs4_delegreturnres *res)
6533{
6534 struct compound_hdr hdr;
6535 int status;
6536
6537 status = decode_compound_hdr(xdr, &hdr);
6538 if (status)
6539 goto out;
6540 status = decode_sequence(xdr, &res->seq_res, rqstp);
6541 if (status)
6542 goto out;
6543 status = decode_putfh(xdr);
6544 if (status != 0)
6545 goto out;
6546 status = decode_delegreturn(xdr);
6547 if (status != 0)
6548 goto out;
6549 decode_getfattr(xdr, res->fattr, res->server,
6550 !RPC_IS_ASYNC(rqstp->rq_task));
6551out:
6552 return status;
6553}
6554
6555/*
6556 * Decode FS_LOCATIONS response
6557 */
6558static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6559 struct xdr_stream *xdr,
6560 struct nfs4_fs_locations_res *res)
6561{
6562 struct compound_hdr hdr;
6563 int status;
6564
6565 status = decode_compound_hdr(xdr, &hdr);
6566 if (status)
6567 goto out;
6568 status = decode_sequence(xdr, &res->seq_res, req);
6569 if (status)
6570 goto out;
6571 status = decode_putfh(xdr);
6572 if (status)
6573 goto out;
6574 status = decode_lookup(xdr);
6575 if (status)
6576 goto out;
6577 xdr_enter_page(xdr, PAGE_SIZE);
6578 status = decode_getfattr(xdr, &res->fs_locations->fattr,
6579 res->fs_locations->server,
6580 !RPC_IS_ASYNC(req->rq_task));
6581out:
6582 return status;
6583}
6584
6585/*
6586 * Decode SECINFO response
6587 */
6588static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6589 struct xdr_stream *xdr,
6590 struct nfs4_secinfo_res *res)
6591{
6592 struct compound_hdr hdr;
6593 int status;
6594
6595 status = decode_compound_hdr(xdr, &hdr);
6596 if (status)
6597 goto out;
6598 status = decode_sequence(xdr, &res->seq_res, rqstp);
6599 if (status)
6600 goto out;
6601 status = decode_putfh(xdr);
6602 if (status)
6603 goto out;
6604 status = decode_secinfo(xdr, res);
6605 if (status)
6606 goto out;
6607out:
6608 return status;
6609}
6610
6611#if defined(CONFIG_NFS_V4_1)
6612/*
6613 * Decode EXCHANGE_ID response
6614 */
6615static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6616 struct xdr_stream *xdr,
6617 void *res)
6618{
6619 struct compound_hdr hdr;
6620 int status;
6621
6622 status = decode_compound_hdr(xdr, &hdr);
6623 if (!status)
6624 status = decode_exchange_id(xdr, res);
6625 return status;
6626}
6627
6628/*
6629 * Decode CREATE_SESSION response
6630 */
6631static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6632 struct xdr_stream *xdr,
6633 struct nfs41_create_session_res *res)
6634{
6635 struct compound_hdr hdr;
6636 int status;
6637
6638 status = decode_compound_hdr(xdr, &hdr);
6639 if (!status)
6640 status = decode_create_session(xdr, res);
6641 return status;
6642}
6643
6644/*
6645 * Decode DESTROY_SESSION response
6646 */
6647static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6648 struct xdr_stream *xdr,
6649 void *res)
6650{
6651 struct compound_hdr hdr;
6652 int status;
6653
6654 status = decode_compound_hdr(xdr, &hdr);
6655 if (!status)
6656 status = decode_destroy_session(xdr, res);
6657 return status;
6658}
6659
6660/*
6661 * Decode SEQUENCE response
6662 */
6663static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6664 struct xdr_stream *xdr,
6665 struct nfs4_sequence_res *res)
6666{
6667 struct compound_hdr hdr;
6668 int status;
6669
6670 status = decode_compound_hdr(xdr, &hdr);
6671 if (!status)
6672 status = decode_sequence(xdr, res, rqstp);
6673 return status;
6674}
6675
6676/*
6677 * Decode GET_LEASE_TIME response
6678 */
6679static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6680 struct xdr_stream *xdr,
6681 struct nfs4_get_lease_time_res *res)
6682{
6683 struct compound_hdr hdr;
6684 int status;
6685
6686 status = decode_compound_hdr(xdr, &hdr);
6687 if (!status)
6688 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6689 if (!status)
6690 status = decode_putrootfh(xdr);
6691 if (!status)
6692 status = decode_fsinfo(xdr, res->lr_fsinfo);
6693 return status;
6694}
6695
6696/*
6697 * Decode RECLAIM_COMPLETE response
6698 */
6699static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6700 struct xdr_stream *xdr,
6701 struct nfs41_reclaim_complete_res *res)
6702{
6703 struct compound_hdr hdr;
6704 int status;
6705
6706 status = decode_compound_hdr(xdr, &hdr);
6707 if (!status)
6708 status = decode_sequence(xdr, &res->seq_res, rqstp);
6709 if (!status)
6710 status = decode_reclaim_complete(xdr, (void *)NULL);
6711 return status;
6712}
6713
6714/*
6715 * Decode GETDEVICELIST response
6716 */
6717static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6718 struct xdr_stream *xdr,
6719 struct nfs4_getdevicelist_res *res)
6720{
6721 struct compound_hdr hdr;
6722 int status;
6723
6724 dprintk("encoding getdevicelist!\n");
6725
6726 status = decode_compound_hdr(xdr, &hdr);
6727 if (status != 0)
6728 goto out;
6729 status = decode_sequence(xdr, &res->seq_res, rqstp);
6730 if (status != 0)
6731 goto out;
6732 status = decode_putfh(xdr);
6733 if (status != 0)
6734 goto out;
6735 status = decode_getdevicelist(xdr, res->devlist);
6736out:
6737 return status;
6738}
6739
6740/*
6741 * Decode GETDEVINFO response
6742 */
6743static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6744 struct xdr_stream *xdr,
6745 struct nfs4_getdeviceinfo_res *res)
6746{
6747 struct compound_hdr hdr;
6748 int status;
6749
6750 status = decode_compound_hdr(xdr, &hdr);
6751 if (status != 0)
6752 goto out;
6753 status = decode_sequence(xdr, &res->seq_res, rqstp);
6754 if (status != 0)
6755 goto out;
6756 status = decode_getdeviceinfo(xdr, res->pdev);
6757out:
6758 return status;
6759}
6760
6761/*
6762 * Decode LAYOUTGET response
6763 */
6764static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6765 struct xdr_stream *xdr,
6766 struct nfs4_layoutget_res *res)
6767{
6768 struct compound_hdr hdr;
6769 int status;
6770
6771 status = decode_compound_hdr(xdr, &hdr);
6772 if (status)
6773 goto out;
6774 status = decode_sequence(xdr, &res->seq_res, rqstp);
6775 if (status)
6776 goto out;
6777 status = decode_putfh(xdr);
6778 if (status)
6779 goto out;
6780 status = decode_layoutget(xdr, rqstp, res);
6781out:
6782 return status;
6783}
6784
6785/*
6786 * Decode LAYOUTRETURN response
6787 */
6788static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6789 struct xdr_stream *xdr,
6790 struct nfs4_layoutreturn_res *res)
6791{
6792 struct compound_hdr hdr;
6793 int status;
6794
6795 status = decode_compound_hdr(xdr, &hdr);
6796 if (status)
6797 goto out;
6798 status = decode_sequence(xdr, &res->seq_res, rqstp);
6799 if (status)
6800 goto out;
6801 status = decode_putfh(xdr);
6802 if (status)
6803 goto out;
6804 status = decode_layoutreturn(xdr, res);
6805out:
6806 return status;
6807}
6808
6809/*
6810 * Decode LAYOUTCOMMIT response
6811 */
6812static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6813 struct xdr_stream *xdr,
6814 struct nfs4_layoutcommit_res *res)
6815{
6816 struct compound_hdr hdr;
6817 int status;
6818
6819 status = decode_compound_hdr(xdr, &hdr);
6820 if (status)
6821 goto out;
6822 status = decode_sequence(xdr, &res->seq_res, rqstp);
6823 if (status)
6824 goto out;
6825 status = decode_putfh(xdr);
6826 if (status)
6827 goto out;
6828 status = decode_layoutcommit(xdr, rqstp, res);
6829 if (status)
6830 goto out;
6831 decode_getfattr(xdr, res->fattr, res->server,
6832 !RPC_IS_ASYNC(rqstp->rq_task));
6833out:
6834 return status;
6835}
6836
6837/*
6838 * Decode SECINFO_NO_NAME response
6839 */
6840static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
6841 struct xdr_stream *xdr,
6842 struct nfs4_secinfo_res *res)
6843{
6844 struct compound_hdr hdr;
6845 int status;
6846
6847 status = decode_compound_hdr(xdr, &hdr);
6848 if (status)
6849 goto out;
6850 status = decode_sequence(xdr, &res->seq_res, rqstp);
6851 if (status)
6852 goto out;
6853 status = decode_putrootfh(xdr);
6854 if (status)
6855 goto out;
6856 status = decode_secinfo(xdr, res);
6857out:
6858 return status;
6859}
6860
6861/*
6862 * Decode TEST_STATEID response
6863 */
6864static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
6865 struct xdr_stream *xdr,
6866 struct nfs41_test_stateid_res *res)
6867{
6868 struct compound_hdr hdr;
6869 int status;
6870
6871 status = decode_compound_hdr(xdr, &hdr);
6872 if (status)
6873 goto out;
6874 status = decode_sequence(xdr, &res->seq_res, rqstp);
6875 if (status)
6876 goto out;
6877 status = decode_test_stateid(xdr, res);
6878out:
6879 return status;
6880}
6881
6882/*
6883 * Decode FREE_STATEID response
6884 */
6885static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
6886 struct xdr_stream *xdr,
6887 struct nfs41_free_stateid_res *res)
6888{
6889 struct compound_hdr hdr;
6890 int status;
6891
6892 status = decode_compound_hdr(xdr, &hdr);
6893 if (status)
6894 goto out;
6895 status = decode_sequence(xdr, &res->seq_res, rqstp);
6896 if (status)
6897 goto out;
6898 status = decode_free_stateid(xdr, res);
6899out:
6900 return status;
6901}
6902#endif /* CONFIG_NFS_V4_1 */
6903
6904/**
6905 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
6906 * the local page cache.
6907 * @xdr: XDR stream where entry resides
6908 * @entry: buffer to fill in with entry data
6909 * @plus: boolean indicating whether this should be a readdirplus entry
6910 *
6911 * Returns zero if successful, otherwise a negative errno value is
6912 * returned.
6913 *
6914 * This function is not invoked during READDIR reply decoding, but
6915 * rather whenever an application invokes the getdents(2) system call
6916 * on a directory already in our cache.
6917 */
6918int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
6919 int plus)
6920{
6921 uint32_t bitmap[3] = {0};
6922 uint32_t len;
6923 __be32 *p = xdr_inline_decode(xdr, 4);
6924 if (unlikely(!p))
6925 goto out_overflow;
6926 if (*p == xdr_zero) {
6927 p = xdr_inline_decode(xdr, 4);
6928 if (unlikely(!p))
6929 goto out_overflow;
6930 if (*p == xdr_zero)
6931 return -EAGAIN;
6932 entry->eof = 1;
6933 return -EBADCOOKIE;
6934 }
6935
6936 p = xdr_inline_decode(xdr, 12);
6937 if (unlikely(!p))
6938 goto out_overflow;
6939 entry->prev_cookie = entry->cookie;
6940 p = xdr_decode_hyper(p, &entry->cookie);
6941 entry->len = be32_to_cpup(p);
6942
6943 p = xdr_inline_decode(xdr, entry->len);
6944 if (unlikely(!p))
6945 goto out_overflow;
6946 entry->name = (const char *) p;
6947
6948 /*
6949 * In case the server doesn't return an inode number,
6950 * we fake one here. (We don't use inode number 0,
6951 * since glibc seems to choke on it...)
6952 */
6953 entry->ino = 1;
6954 entry->fattr->valid = 0;
6955
6956 if (decode_attr_bitmap(xdr, bitmap) < 0)
6957 goto out_overflow;
6958
6959 if (decode_attr_length(xdr, &len, &p) < 0)
6960 goto out_overflow;
6961
6962 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
6963 entry->server, 1) < 0)
6964 goto out_overflow;
6965 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
6966 entry->ino = entry->fattr->mounted_on_fileid;
6967 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
6968 entry->ino = entry->fattr->fileid;
6969
6970 entry->d_type = DT_UNKNOWN;
6971 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
6972 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
6973
6974 return 0;
6975
6976out_overflow:
6977 print_overflow_msg(__func__, xdr);
6978 return -EAGAIN;
6979}
6980
6981/*
6982 * We need to translate between nfs status return values and
6983 * the local errno values which may not be the same.
6984 */
6985static struct {
6986 int stat;
6987 int errno;
6988} nfs_errtbl[] = {
6989 { NFS4_OK, 0 },
6990 { NFS4ERR_PERM, -EPERM },
6991 { NFS4ERR_NOENT, -ENOENT },
6992 { NFS4ERR_IO, -errno_NFSERR_IO},
6993 { NFS4ERR_NXIO, -ENXIO },
6994 { NFS4ERR_ACCESS, -EACCES },
6995 { NFS4ERR_EXIST, -EEXIST },
6996 { NFS4ERR_XDEV, -EXDEV },
6997 { NFS4ERR_NOTDIR, -ENOTDIR },
6998 { NFS4ERR_ISDIR, -EISDIR },
6999 { NFS4ERR_INVAL, -EINVAL },
7000 { NFS4ERR_FBIG, -EFBIG },
7001 { NFS4ERR_NOSPC, -ENOSPC },
7002 { NFS4ERR_ROFS, -EROFS },
7003 { NFS4ERR_MLINK, -EMLINK },
7004 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7005 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7006 { NFS4ERR_DQUOT, -EDQUOT },
7007 { NFS4ERR_STALE, -ESTALE },
7008 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7009 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7010 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7011 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7012 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7013 { NFS4ERR_BADTYPE, -EBADTYPE },
7014 { NFS4ERR_LOCKED, -EAGAIN },
7015 { NFS4ERR_SYMLINK, -ELOOP },
7016 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7017 { NFS4ERR_DEADLOCK, -EDEADLK },
7018 { -1, -EIO }
7019};
7020
7021/*
7022 * Convert an NFS error code to a local one.
7023 * This one is used jointly by NFSv2 and NFSv3.
7024 */
7025static int
7026nfs4_stat_to_errno(int stat)
7027{
7028 int i;
7029 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7030 if (nfs_errtbl[i].stat == stat)
7031 return nfs_errtbl[i].errno;
7032 }
7033 if (stat <= 10000 || stat > 10100) {
7034 /* The server is looney tunes. */
7035 return -EREMOTEIO;
7036 }
7037 /* If we cannot translate the error, the recovery routines should
7038 * handle it.
7039 * Note: remaining NFSv4 error codes have values > 10000, so should
7040 * not conflict with native Linux error codes.
7041 */
7042 return -stat;
7043}
7044
7045#define PROC(proc, argtype, restype) \
7046[NFSPROC4_CLNT_##proc] = { \
7047 .p_proc = NFSPROC4_COMPOUND, \
7048 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7049 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7050 .p_arglen = NFS4_##argtype##_sz, \
7051 .p_replen = NFS4_##restype##_sz, \
7052 .p_statidx = NFSPROC4_CLNT_##proc, \
7053 .p_name = #proc, \
7054}
7055
7056struct rpc_procinfo nfs4_procedures[] = {
7057 PROC(READ, enc_read, dec_read),
7058 PROC(WRITE, enc_write, dec_write),
7059 PROC(COMMIT, enc_commit, dec_commit),
7060 PROC(OPEN, enc_open, dec_open),
7061 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7062 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7063 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7064 PROC(CLOSE, enc_close, dec_close),
7065 PROC(SETATTR, enc_setattr, dec_setattr),
7066 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7067 PROC(RENEW, enc_renew, dec_renew),
7068 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7069 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7070 PROC(LOCK, enc_lock, dec_lock),
7071 PROC(LOCKT, enc_lockt, dec_lockt),
7072 PROC(LOCKU, enc_locku, dec_locku),
7073 PROC(ACCESS, enc_access, dec_access),
7074 PROC(GETATTR, enc_getattr, dec_getattr),
7075 PROC(LOOKUP, enc_lookup, dec_lookup),
7076 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7077 PROC(REMOVE, enc_remove, dec_remove),
7078 PROC(RENAME, enc_rename, dec_rename),
7079 PROC(LINK, enc_link, dec_link),
7080 PROC(SYMLINK, enc_symlink, dec_symlink),
7081 PROC(CREATE, enc_create, dec_create),
7082 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7083 PROC(STATFS, enc_statfs, dec_statfs),
7084 PROC(READLINK, enc_readlink, dec_readlink),
7085 PROC(READDIR, enc_readdir, dec_readdir),
7086 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7087 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7088 PROC(GETACL, enc_getacl, dec_getacl),
7089 PROC(SETACL, enc_setacl, dec_setacl),
7090 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7091 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7092 PROC(SECINFO, enc_secinfo, dec_secinfo),
7093#if defined(CONFIG_NFS_V4_1)
7094 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7095 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7096 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7097 PROC(SEQUENCE, enc_sequence, dec_sequence),
7098 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7099 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7100 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7101 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7102 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7103 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7104 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7105 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7106 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7107 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7108#endif /* CONFIG_NFS_V4_1 */
7109};
7110
7111struct rpc_version nfs_version4 = {
7112 .number = 4,
7113 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7114 .procs = nfs4_procedures
7115};
7116
7117/*
7118 * Local variables:
7119 * c-basic-offset: 8
7120 * End:
7121 */
1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/module.h>
48#include <linux/utsname.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/sunrpc/msg_prot.h>
51#include <linux/sunrpc/gss_api.h>
52#include <linux/nfs.h>
53#include <linux/nfs4.h>
54#include <linux/nfs_fs.h>
55
56#include "nfs4_fs.h"
57#include "internal.h"
58#include "nfs4idmap.h"
59#include "nfs4session.h"
60#include "pnfs.h"
61#include "netns.h"
62
63#define NFSDBG_FACILITY NFSDBG_XDR
64
65/* Mapping from NFS error code to "errno" error code. */
66#define errno_NFSERR_IO EIO
67
68static int nfs4_stat_to_errno(int);
69
70/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
71#ifdef DEBUG
72#define NFS4_MAXTAGLEN 20
73#else
74#define NFS4_MAXTAGLEN 0
75#endif
76
77/* lock,open owner id:
78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
79 */
80#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
81#define lock_owner_id_maxsz (1 + 1 + 4)
82#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
83#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85#define op_encode_hdr_maxsz (1)
86#define op_decode_hdr_maxsz (2)
87#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
92 (NFS4_FHSIZE >> 2))
93#define decode_putfh_maxsz (op_decode_hdr_maxsz)
94#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96#define encode_getfh_maxsz (op_encode_hdr_maxsz)
97#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
99#define nfs4_fattr_bitmap_maxsz 4
100#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
101#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
103#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105#ifdef CONFIG_NFS_V4_SECURITY_LABEL
106/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
107#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
108#else
109#define nfs4_label_maxsz 0
110#endif
111/* We support only one layout type per file system */
112#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
113/* This is based on getfattr, which uses the most attributes: */
114#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
115 3 + 3 + 3 + nfs4_owner_maxsz + \
116 nfs4_group_maxsz + nfs4_label_maxsz + \
117 decode_mdsthreshold_maxsz))
118#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
119 nfs4_fattr_value_maxsz)
120#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
121#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
122 1 + 2 + 1 + \
123 nfs4_owner_maxsz + \
124 nfs4_group_maxsz + \
125 nfs4_label_maxsz + \
126 4 + 4)
127#define encode_savefh_maxsz (op_encode_hdr_maxsz)
128#define decode_savefh_maxsz (op_decode_hdr_maxsz)
129#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
130#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
131#define encode_fsinfo_maxsz (encode_getattr_maxsz)
132/* The 5 accounts for the PNFS attributes, and assumes that at most three
133 * layout types will be returned.
134 */
135#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
136 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
137#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
138#define decode_renew_maxsz (op_decode_hdr_maxsz)
139#define encode_setclientid_maxsz \
140 (op_encode_hdr_maxsz + \
141 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
142 /* client name */ \
143 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
144 1 /* sc_prog */ + \
145 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
146 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
147 1) /* sc_cb_ident */
148#define decode_setclientid_maxsz \
149 (op_decode_hdr_maxsz + \
150 2 /* clientid */ + \
151 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
152 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
153 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
154#define encode_setclientid_confirm_maxsz \
155 (op_encode_hdr_maxsz + \
156 3 + (NFS4_VERIFIER_SIZE >> 2))
157#define decode_setclientid_confirm_maxsz \
158 (op_decode_hdr_maxsz)
159#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
160#define decode_lookup_maxsz (op_decode_hdr_maxsz)
161#define encode_share_access_maxsz \
162 (2)
163#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
164#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
165#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
166#define encode_open_maxsz (op_encode_hdr_maxsz + \
167 2 + encode_share_access_maxsz + 2 + \
168 open_owner_id_maxsz + \
169 encode_opentype_maxsz + \
170 encode_claim_null_maxsz)
171#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
172#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
173 decode_ace_maxsz)
174#define decode_change_info_maxsz (5)
175#define decode_open_maxsz (op_decode_hdr_maxsz + \
176 decode_stateid_maxsz + \
177 decode_change_info_maxsz + 1 + \
178 nfs4_fattr_bitmap_maxsz + \
179 decode_delegation_maxsz)
180#define encode_open_confirm_maxsz \
181 (op_encode_hdr_maxsz + \
182 encode_stateid_maxsz + 1)
183#define decode_open_confirm_maxsz \
184 (op_decode_hdr_maxsz + \
185 decode_stateid_maxsz)
186#define encode_open_downgrade_maxsz \
187 (op_encode_hdr_maxsz + \
188 encode_stateid_maxsz + 1 + \
189 encode_share_access_maxsz)
190#define decode_open_downgrade_maxsz \
191 (op_decode_hdr_maxsz + \
192 decode_stateid_maxsz)
193#define encode_close_maxsz (op_encode_hdr_maxsz + \
194 1 + encode_stateid_maxsz)
195#define decode_close_maxsz (op_decode_hdr_maxsz + \
196 decode_stateid_maxsz)
197#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
198 encode_stateid_maxsz + \
199 encode_attrs_maxsz)
200#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
201 nfs4_fattr_bitmap_maxsz)
202#define encode_read_maxsz (op_encode_hdr_maxsz + \
203 encode_stateid_maxsz + 3)
204#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
205#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
206 2 + encode_verifier_maxsz + 5 + \
207 nfs4_label_maxsz)
208#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
209 decode_verifier_maxsz)
210#define encode_readlink_maxsz (op_encode_hdr_maxsz)
211#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
212#define encode_write_maxsz (op_encode_hdr_maxsz + \
213 encode_stateid_maxsz + 4)
214#define decode_write_maxsz (op_decode_hdr_maxsz + \
215 2 + decode_verifier_maxsz)
216#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
217#define decode_commit_maxsz (op_decode_hdr_maxsz + \
218 decode_verifier_maxsz)
219#define encode_remove_maxsz (op_encode_hdr_maxsz + \
220 nfs4_name_maxsz)
221#define decode_remove_maxsz (op_decode_hdr_maxsz + \
222 decode_change_info_maxsz)
223#define encode_rename_maxsz (op_encode_hdr_maxsz + \
224 2 * nfs4_name_maxsz)
225#define decode_rename_maxsz (op_decode_hdr_maxsz + \
226 decode_change_info_maxsz + \
227 decode_change_info_maxsz)
228#define encode_link_maxsz (op_encode_hdr_maxsz + \
229 nfs4_name_maxsz)
230#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
231#define encode_lockowner_maxsz (7)
232#define encode_lock_maxsz (op_encode_hdr_maxsz + \
233 7 + \
234 1 + encode_stateid_maxsz + 1 + \
235 encode_lockowner_maxsz)
236#define decode_lock_denied_maxsz \
237 (8 + decode_lockowner_maxsz)
238#define decode_lock_maxsz (op_decode_hdr_maxsz + \
239 decode_lock_denied_maxsz)
240#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
241 encode_lockowner_maxsz)
242#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
243 decode_lock_denied_maxsz)
244#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
245 encode_stateid_maxsz + \
246 4)
247#define decode_locku_maxsz (op_decode_hdr_maxsz + \
248 decode_stateid_maxsz)
249#define encode_release_lockowner_maxsz \
250 (op_encode_hdr_maxsz + \
251 encode_lockowner_maxsz)
252#define decode_release_lockowner_maxsz \
253 (op_decode_hdr_maxsz)
254#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
255#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
256#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
257 1 + nfs4_name_maxsz + \
258 1 + \
259 nfs4_fattr_maxsz)
260#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
261#define encode_create_maxsz (op_encode_hdr_maxsz + \
262 1 + 2 + nfs4_name_maxsz + \
263 encode_attrs_maxsz)
264#define decode_create_maxsz (op_decode_hdr_maxsz + \
265 decode_change_info_maxsz + \
266 nfs4_fattr_bitmap_maxsz)
267#define encode_statfs_maxsz (encode_getattr_maxsz)
268#define decode_statfs_maxsz (decode_getattr_maxsz)
269#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
270#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
271#define encode_getacl_maxsz (encode_getattr_maxsz)
272#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
273 nfs4_fattr_bitmap_maxsz + 1)
274#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
275 encode_stateid_maxsz + 3)
276#define decode_setacl_maxsz (decode_setattr_maxsz)
277#define encode_fs_locations_maxsz \
278 (encode_getattr_maxsz)
279#define decode_fs_locations_maxsz \
280 (0)
281#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
282#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
283
284#if defined(CONFIG_NFS_V4_1)
285#define NFS4_MAX_MACHINE_NAME_LEN (64)
286#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
287 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
288
289#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
290 encode_verifier_maxsz + \
291 1 /* co_ownerid.len */ + \
292 /* eia_clientowner */ \
293 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
294 1 /* flags */ + \
295 1 /* spa_how */ + \
296 /* max is SP4_MACH_CRED (for now) */ + \
297 1 + NFS4_OP_MAP_NUM_WORDS + \
298 1 + NFS4_OP_MAP_NUM_WORDS + \
299 1 /* implementation id array of size 1 */ + \
300 1 /* nii_domain */ + \
301 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
302 1 /* nii_name */ + \
303 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
304 3 /* nii_date */)
305#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
306 2 /* eir_clientid */ + \
307 1 /* eir_sequenceid */ + \
308 1 /* eir_flags */ + \
309 1 /* spr_how */ + \
310 /* max is SP4_MACH_CRED (for now) */ + \
311 1 + NFS4_OP_MAP_NUM_WORDS + \
312 1 + NFS4_OP_MAP_NUM_WORDS + \
313 2 /* eir_server_owner.so_minor_id */ + \
314 /* eir_server_owner.so_major_id<> */ \
315 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
316 /* eir_server_scope<> */ \
317 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
318 1 /* eir_server_impl_id array length */ + \
319 1 /* nii_domain */ + \
320 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
321 1 /* nii_name */ + \
322 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
323 3 /* nii_date */)
324#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
325#define decode_channel_attrs_maxsz (6 + \
326 1 /* ca_rdma_ird.len */ + \
327 1 /* ca_rdma_ird */)
328#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
329 2 /* csa_clientid */ + \
330 1 /* csa_sequence */ + \
331 1 /* csa_flags */ + \
332 encode_channel_attrs_maxsz + \
333 encode_channel_attrs_maxsz + \
334 1 /* csa_cb_program */ + \
335 1 /* csa_sec_parms.len (1) */ + \
336 1 /* cb_secflavor (AUTH_SYS) */ + \
337 1 /* stamp */ + \
338 1 /* machinename.len */ + \
339 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
340 1 /* uid */ + \
341 1 /* gid */ + \
342 1 /* gids.len (0) */)
343#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
344 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
345 1 /* csr_sequence */ + \
346 1 /* csr_flags */ + \
347 decode_channel_attrs_maxsz + \
348 decode_channel_attrs_maxsz)
349#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
350 /* bctsa_sessid */ \
351 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
352 1 /* bctsa_dir */ + \
353 1 /* bctsa_use_conn_in_rdma_mode */)
354#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
355 /* bctsr_sessid */ \
356 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
357 1 /* bctsr_dir */ + \
358 1 /* bctsr_use_conn_in_rdma_mode */)
359#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
360#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
361#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
362#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
363#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
364 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
365#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
366 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
367#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
368#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
369#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
370 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
371 1 /* layout type */ + \
372 1 /* maxcount */ + \
373 1 /* bitmap size */ + \
374 1 /* notification bitmap length */ + \
375 1 /* notification bitmap, word 0 */)
376#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
377 1 /* layout type */ + \
378 1 /* opaque devaddr4 length */ + \
379 /* devaddr4 payload is read into page */ \
380 1 /* notification bitmap length */ + \
381 1 /* notification bitmap, word 0 */)
382#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
383 encode_stateid_maxsz)
384#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
385 decode_stateid_maxsz + \
386 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
387#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
388 2 /* offset */ + \
389 2 /* length */ + \
390 1 /* reclaim */ + \
391 encode_stateid_maxsz + \
392 1 /* new offset (true) */ + \
393 2 /* last byte written */ + \
394 1 /* nt_timechanged (false) */ + \
395 1 /* layoutupdate4 layout type */ + \
396 1 /* layoutupdate4 opaqueue len */)
397 /* the actual content of layoutupdate4 should
398 be allocated by drivers and spliced in
399 using xdr_write_pages */
400#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
401#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
402 encode_stateid_maxsz + \
403 1 + \
404 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
405#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
406 1 + decode_stateid_maxsz)
407#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
408#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
409#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
410 XDR_QUADLEN(NFS4_STATEID_SIZE))
411#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
412#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
413 XDR_QUADLEN(NFS4_STATEID_SIZE))
414#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
415#else /* CONFIG_NFS_V4_1 */
416#define encode_sequence_maxsz 0
417#define decode_sequence_maxsz 0
418#endif /* CONFIG_NFS_V4_1 */
419
420#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
421#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
422#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
423 encode_sequence_maxsz + \
424 encode_putfh_maxsz + \
425 encode_read_maxsz)
426#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
427 decode_sequence_maxsz + \
428 decode_putfh_maxsz + \
429 decode_read_maxsz)
430#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
431 encode_sequence_maxsz + \
432 encode_putfh_maxsz + \
433 encode_readlink_maxsz)
434#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
435 decode_sequence_maxsz + \
436 decode_putfh_maxsz + \
437 decode_readlink_maxsz)
438#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
439 encode_sequence_maxsz + \
440 encode_putfh_maxsz + \
441 encode_readdir_maxsz)
442#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
443 decode_sequence_maxsz + \
444 decode_putfh_maxsz + \
445 decode_readdir_maxsz)
446#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
447 encode_sequence_maxsz + \
448 encode_putfh_maxsz + \
449 encode_write_maxsz + \
450 encode_getattr_maxsz)
451#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
452 decode_sequence_maxsz + \
453 decode_putfh_maxsz + \
454 decode_write_maxsz + \
455 decode_getattr_maxsz)
456#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
457 encode_sequence_maxsz + \
458 encode_putfh_maxsz + \
459 encode_commit_maxsz)
460#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
461 decode_sequence_maxsz + \
462 decode_putfh_maxsz + \
463 decode_commit_maxsz)
464#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
465 encode_sequence_maxsz + \
466 encode_putfh_maxsz + \
467 encode_open_maxsz + \
468 encode_access_maxsz + \
469 encode_getfh_maxsz + \
470 encode_getattr_maxsz)
471#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
472 decode_sequence_maxsz + \
473 decode_putfh_maxsz + \
474 decode_open_maxsz + \
475 decode_access_maxsz + \
476 decode_getfh_maxsz + \
477 decode_getattr_maxsz)
478#define NFS4_enc_open_confirm_sz \
479 (compound_encode_hdr_maxsz + \
480 encode_putfh_maxsz + \
481 encode_open_confirm_maxsz)
482#define NFS4_dec_open_confirm_sz \
483 (compound_decode_hdr_maxsz + \
484 decode_putfh_maxsz + \
485 decode_open_confirm_maxsz)
486#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
487 encode_sequence_maxsz + \
488 encode_putfh_maxsz + \
489 encode_open_maxsz + \
490 encode_access_maxsz + \
491 encode_getattr_maxsz)
492#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
493 decode_sequence_maxsz + \
494 decode_putfh_maxsz + \
495 decode_open_maxsz + \
496 decode_access_maxsz + \
497 decode_getattr_maxsz)
498#define NFS4_enc_open_downgrade_sz \
499 (compound_encode_hdr_maxsz + \
500 encode_sequence_maxsz + \
501 encode_putfh_maxsz + \
502 encode_open_downgrade_maxsz + \
503 encode_getattr_maxsz)
504#define NFS4_dec_open_downgrade_sz \
505 (compound_decode_hdr_maxsz + \
506 decode_sequence_maxsz + \
507 decode_putfh_maxsz + \
508 decode_open_downgrade_maxsz + \
509 decode_getattr_maxsz)
510#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
511 encode_sequence_maxsz + \
512 encode_putfh_maxsz + \
513 encode_close_maxsz + \
514 encode_getattr_maxsz)
515#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
516 decode_sequence_maxsz + \
517 decode_putfh_maxsz + \
518 decode_close_maxsz + \
519 decode_getattr_maxsz)
520#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
521 encode_sequence_maxsz + \
522 encode_putfh_maxsz + \
523 encode_setattr_maxsz + \
524 encode_getattr_maxsz)
525#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
526 decode_sequence_maxsz + \
527 decode_putfh_maxsz + \
528 decode_setattr_maxsz + \
529 decode_getattr_maxsz)
530#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
531 encode_sequence_maxsz + \
532 encode_putfh_maxsz + \
533 encode_fsinfo_maxsz)
534#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
535 decode_sequence_maxsz + \
536 decode_putfh_maxsz + \
537 decode_fsinfo_maxsz)
538#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
539 encode_renew_maxsz)
540#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
541 decode_renew_maxsz)
542#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
543 encode_setclientid_maxsz)
544#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
545 decode_setclientid_maxsz)
546#define NFS4_enc_setclientid_confirm_sz \
547 (compound_encode_hdr_maxsz + \
548 encode_setclientid_confirm_maxsz)
549#define NFS4_dec_setclientid_confirm_sz \
550 (compound_decode_hdr_maxsz + \
551 decode_setclientid_confirm_maxsz)
552#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
553 encode_sequence_maxsz + \
554 encode_putfh_maxsz + \
555 encode_lock_maxsz)
556#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
557 decode_sequence_maxsz + \
558 decode_putfh_maxsz + \
559 decode_lock_maxsz)
560#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
561 encode_sequence_maxsz + \
562 encode_putfh_maxsz + \
563 encode_lockt_maxsz)
564#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
565 decode_sequence_maxsz + \
566 decode_putfh_maxsz + \
567 decode_lockt_maxsz)
568#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
569 encode_sequence_maxsz + \
570 encode_putfh_maxsz + \
571 encode_locku_maxsz)
572#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
573 decode_sequence_maxsz + \
574 decode_putfh_maxsz + \
575 decode_locku_maxsz)
576#define NFS4_enc_release_lockowner_sz \
577 (compound_encode_hdr_maxsz + \
578 encode_lockowner_maxsz)
579#define NFS4_dec_release_lockowner_sz \
580 (compound_decode_hdr_maxsz + \
581 decode_lockowner_maxsz)
582#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
583 encode_sequence_maxsz + \
584 encode_putfh_maxsz + \
585 encode_access_maxsz + \
586 encode_getattr_maxsz)
587#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
588 decode_sequence_maxsz + \
589 decode_putfh_maxsz + \
590 decode_access_maxsz + \
591 decode_getattr_maxsz)
592#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
593 encode_sequence_maxsz + \
594 encode_putfh_maxsz + \
595 encode_getattr_maxsz + \
596 encode_renew_maxsz)
597#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
598 decode_sequence_maxsz + \
599 decode_putfh_maxsz + \
600 decode_getattr_maxsz + \
601 decode_renew_maxsz)
602#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
603 encode_sequence_maxsz + \
604 encode_putfh_maxsz + \
605 encode_lookup_maxsz + \
606 encode_getattr_maxsz + \
607 encode_getfh_maxsz)
608#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_lookup_maxsz + \
612 decode_getattr_maxsz + \
613 decode_getfh_maxsz)
614#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
615 encode_sequence_maxsz + \
616 encode_putrootfh_maxsz + \
617 encode_getattr_maxsz + \
618 encode_getfh_maxsz)
619#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
620 decode_sequence_maxsz + \
621 decode_putrootfh_maxsz + \
622 decode_getattr_maxsz + \
623 decode_getfh_maxsz)
624#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
625 encode_sequence_maxsz + \
626 encode_putfh_maxsz + \
627 encode_remove_maxsz)
628#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
629 decode_sequence_maxsz + \
630 decode_putfh_maxsz + \
631 decode_remove_maxsz)
632#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
633 encode_sequence_maxsz + \
634 encode_putfh_maxsz + \
635 encode_savefh_maxsz + \
636 encode_putfh_maxsz + \
637 encode_rename_maxsz)
638#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
639 decode_sequence_maxsz + \
640 decode_putfh_maxsz + \
641 decode_savefh_maxsz + \
642 decode_putfh_maxsz + \
643 decode_rename_maxsz)
644#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
645 encode_sequence_maxsz + \
646 encode_putfh_maxsz + \
647 encode_savefh_maxsz + \
648 encode_putfh_maxsz + \
649 encode_link_maxsz + \
650 encode_restorefh_maxsz + \
651 encode_getattr_maxsz)
652#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
653 decode_sequence_maxsz + \
654 decode_putfh_maxsz + \
655 decode_savefh_maxsz + \
656 decode_putfh_maxsz + \
657 decode_link_maxsz + \
658 decode_restorefh_maxsz + \
659 decode_getattr_maxsz)
660#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
661 encode_sequence_maxsz + \
662 encode_putfh_maxsz + \
663 encode_symlink_maxsz + \
664 encode_getattr_maxsz + \
665 encode_getfh_maxsz)
666#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
667 decode_sequence_maxsz + \
668 decode_putfh_maxsz + \
669 decode_symlink_maxsz + \
670 decode_getattr_maxsz + \
671 decode_getfh_maxsz)
672#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
673 encode_sequence_maxsz + \
674 encode_putfh_maxsz + \
675 encode_create_maxsz + \
676 encode_getfh_maxsz + \
677 encode_getattr_maxsz)
678#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
679 decode_sequence_maxsz + \
680 decode_putfh_maxsz + \
681 decode_create_maxsz + \
682 decode_getfh_maxsz + \
683 decode_getattr_maxsz)
684#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
685 encode_sequence_maxsz + \
686 encode_putfh_maxsz + \
687 encode_getattr_maxsz)
688#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
689 decode_sequence_maxsz + \
690 decode_putfh_maxsz + \
691 decode_getattr_maxsz)
692#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
693 encode_sequence_maxsz + \
694 encode_putfh_maxsz + \
695 encode_statfs_maxsz)
696#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
697 decode_sequence_maxsz + \
698 decode_putfh_maxsz + \
699 decode_statfs_maxsz)
700#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
701 encode_sequence_maxsz + \
702 encode_putfh_maxsz + \
703 encode_getattr_maxsz)
704#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
705 decode_sequence_maxsz + \
706 decode_putfh_maxsz + \
707 decode_getattr_maxsz)
708#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
709 encode_sequence_maxsz + \
710 encode_putfh_maxsz + \
711 encode_delegreturn_maxsz + \
712 encode_getattr_maxsz)
713#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
714 decode_sequence_maxsz + \
715 decode_delegreturn_maxsz + \
716 decode_getattr_maxsz)
717#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
718 encode_sequence_maxsz + \
719 encode_putfh_maxsz + \
720 encode_getacl_maxsz)
721#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
722 decode_sequence_maxsz + \
723 decode_putfh_maxsz + \
724 decode_getacl_maxsz)
725#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
726 encode_sequence_maxsz + \
727 encode_putfh_maxsz + \
728 encode_setacl_maxsz)
729#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
730 decode_sequence_maxsz + \
731 decode_putfh_maxsz + \
732 decode_setacl_maxsz)
733#define NFS4_enc_fs_locations_sz \
734 (compound_encode_hdr_maxsz + \
735 encode_sequence_maxsz + \
736 encode_putfh_maxsz + \
737 encode_lookup_maxsz + \
738 encode_fs_locations_maxsz + \
739 encode_renew_maxsz)
740#define NFS4_dec_fs_locations_sz \
741 (compound_decode_hdr_maxsz + \
742 decode_sequence_maxsz + \
743 decode_putfh_maxsz + \
744 decode_lookup_maxsz + \
745 decode_fs_locations_maxsz + \
746 decode_renew_maxsz)
747#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
748 encode_sequence_maxsz + \
749 encode_putfh_maxsz + \
750 encode_secinfo_maxsz)
751#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
752 decode_sequence_maxsz + \
753 decode_putfh_maxsz + \
754 decode_secinfo_maxsz)
755#define NFS4_enc_fsid_present_sz \
756 (compound_encode_hdr_maxsz + \
757 encode_sequence_maxsz + \
758 encode_putfh_maxsz + \
759 encode_getfh_maxsz + \
760 encode_renew_maxsz)
761#define NFS4_dec_fsid_present_sz \
762 (compound_decode_hdr_maxsz + \
763 decode_sequence_maxsz + \
764 decode_putfh_maxsz + \
765 decode_getfh_maxsz + \
766 decode_renew_maxsz)
767#if defined(CONFIG_NFS_V4_1)
768#define NFS4_enc_bind_conn_to_session_sz \
769 (compound_encode_hdr_maxsz + \
770 encode_bind_conn_to_session_maxsz)
771#define NFS4_dec_bind_conn_to_session_sz \
772 (compound_decode_hdr_maxsz + \
773 decode_bind_conn_to_session_maxsz)
774#define NFS4_enc_exchange_id_sz \
775 (compound_encode_hdr_maxsz + \
776 encode_exchange_id_maxsz)
777#define NFS4_dec_exchange_id_sz \
778 (compound_decode_hdr_maxsz + \
779 decode_exchange_id_maxsz)
780#define NFS4_enc_create_session_sz \
781 (compound_encode_hdr_maxsz + \
782 encode_create_session_maxsz)
783#define NFS4_dec_create_session_sz \
784 (compound_decode_hdr_maxsz + \
785 decode_create_session_maxsz)
786#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
787 encode_destroy_session_maxsz)
788#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
789 decode_destroy_session_maxsz)
790#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
791 encode_destroy_clientid_maxsz)
792#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
793 decode_destroy_clientid_maxsz)
794#define NFS4_enc_sequence_sz \
795 (compound_decode_hdr_maxsz + \
796 encode_sequence_maxsz)
797#define NFS4_dec_sequence_sz \
798 (compound_decode_hdr_maxsz + \
799 decode_sequence_maxsz)
800#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
801 encode_sequence_maxsz + \
802 encode_putrootfh_maxsz + \
803 encode_fsinfo_maxsz)
804#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
805 decode_sequence_maxsz + \
806 decode_putrootfh_maxsz + \
807 decode_fsinfo_maxsz)
808#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
809 encode_sequence_maxsz + \
810 encode_reclaim_complete_maxsz)
811#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
812 decode_sequence_maxsz + \
813 decode_reclaim_complete_maxsz)
814#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
815 encode_sequence_maxsz +\
816 encode_getdeviceinfo_maxsz)
817#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
818 decode_sequence_maxsz + \
819 decode_getdeviceinfo_maxsz)
820#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz + \
822 encode_putfh_maxsz + \
823 encode_layoutget_maxsz)
824#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putfh_maxsz + \
827 decode_layoutget_maxsz)
828#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
829 encode_sequence_maxsz +\
830 encode_putfh_maxsz + \
831 encode_layoutcommit_maxsz + \
832 encode_getattr_maxsz)
833#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
834 decode_sequence_maxsz + \
835 decode_putfh_maxsz + \
836 decode_layoutcommit_maxsz + \
837 decode_getattr_maxsz)
838#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
839 encode_sequence_maxsz + \
840 encode_putfh_maxsz + \
841 encode_layoutreturn_maxsz)
842#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
843 decode_sequence_maxsz + \
844 decode_putfh_maxsz + \
845 decode_layoutreturn_maxsz)
846#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
847 encode_sequence_maxsz + \
848 encode_putrootfh_maxsz +\
849 encode_secinfo_no_name_maxsz)
850#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz + \
852 decode_putrootfh_maxsz + \
853 decode_secinfo_no_name_maxsz)
854#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
855 encode_sequence_maxsz + \
856 encode_test_stateid_maxsz)
857#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
858 decode_sequence_maxsz + \
859 decode_test_stateid_maxsz)
860#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
861 encode_sequence_maxsz + \
862 encode_free_stateid_maxsz)
863#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
864 decode_sequence_maxsz + \
865 decode_free_stateid_maxsz)
866
867const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
868 compound_encode_hdr_maxsz +
869 encode_sequence_maxsz +
870 encode_putfh_maxsz +
871 encode_getattr_maxsz) *
872 XDR_UNIT);
873
874const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
875 compound_decode_hdr_maxsz +
876 decode_sequence_maxsz +
877 decode_putfh_maxsz) *
878 XDR_UNIT);
879
880const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
881 compound_decode_hdr_maxsz +
882 decode_sequence_maxsz) *
883 XDR_UNIT);
884EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
885#endif /* CONFIG_NFS_V4_1 */
886
887static const umode_t nfs_type2fmt[] = {
888 [NF4BAD] = 0,
889 [NF4REG] = S_IFREG,
890 [NF4DIR] = S_IFDIR,
891 [NF4BLK] = S_IFBLK,
892 [NF4CHR] = S_IFCHR,
893 [NF4LNK] = S_IFLNK,
894 [NF4SOCK] = S_IFSOCK,
895 [NF4FIFO] = S_IFIFO,
896 [NF4ATTRDIR] = 0,
897 [NF4NAMEDATTR] = 0,
898};
899
900struct compound_hdr {
901 int32_t status;
902 uint32_t nops;
903 __be32 * nops_p;
904 uint32_t taglen;
905 char * tag;
906 uint32_t replen; /* expected reply words */
907 u32 minorversion;
908};
909
910static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
911{
912 __be32 *p = xdr_reserve_space(xdr, nbytes);
913 BUG_ON(!p);
914 return p;
915}
916
917static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
918{
919 __be32 *p;
920
921 p = xdr_reserve_space(xdr, len);
922 xdr_encode_opaque_fixed(p, buf, len);
923}
924
925static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
926{
927 __be32 *p;
928
929 p = reserve_space(xdr, 4 + len);
930 xdr_encode_opaque(p, str, len);
931}
932
933static void encode_uint32(struct xdr_stream *xdr, u32 n)
934{
935 __be32 *p;
936
937 p = reserve_space(xdr, 4);
938 *p = cpu_to_be32(n);
939}
940
941static void encode_uint64(struct xdr_stream *xdr, u64 n)
942{
943 __be32 *p;
944
945 p = reserve_space(xdr, 8);
946 xdr_encode_hyper(p, n);
947}
948
949static void encode_nfs4_seqid(struct xdr_stream *xdr,
950 const struct nfs_seqid *seqid)
951{
952 if (seqid != NULL)
953 encode_uint32(xdr, seqid->sequence->counter);
954 else
955 encode_uint32(xdr, 0);
956}
957
958static void encode_compound_hdr(struct xdr_stream *xdr,
959 struct rpc_rqst *req,
960 struct compound_hdr *hdr)
961{
962 __be32 *p;
963 struct rpc_auth *auth = req->rq_cred->cr_auth;
964
965 /* initialize running count of expected bytes in reply.
966 * NOTE: the replied tag SHOULD be the same is the one sent,
967 * but this is not required as a MUST for the server to do so. */
968 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
969
970 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
971 encode_string(xdr, hdr->taglen, hdr->tag);
972 p = reserve_space(xdr, 8);
973 *p++ = cpu_to_be32(hdr->minorversion);
974 hdr->nops_p = p;
975 *p = cpu_to_be32(hdr->nops);
976}
977
978static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
979 uint32_t replen,
980 struct compound_hdr *hdr)
981{
982 encode_uint32(xdr, op);
983 hdr->nops++;
984 hdr->replen += replen;
985}
986
987static void encode_nops(struct compound_hdr *hdr)
988{
989 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
990 *hdr->nops_p = htonl(hdr->nops);
991}
992
993static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
994{
995 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
996}
997
998static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
999{
1000 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1001}
1002
1003static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1004 const struct nfs4_label *label,
1005 const struct nfs_server *server,
1006 bool excl_check)
1007{
1008 char owner_name[IDMAP_NAMESZ];
1009 char owner_group[IDMAP_NAMESZ];
1010 int owner_namelen = 0;
1011 int owner_grouplen = 0;
1012 __be32 *p;
1013 unsigned i;
1014 uint32_t len = 0;
1015 uint32_t bmval_len;
1016 uint32_t bmval[3] = { 0 };
1017
1018 /*
1019 * We reserve enough space to write the entire attribute buffer at once.
1020 * In the worst-case, this would be
1021 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
1022 * = 40 bytes, plus any contribution from variable-length fields
1023 * such as owner/group.
1024 */
1025 if (iap->ia_valid & ATTR_SIZE) {
1026 bmval[0] |= FATTR4_WORD0_SIZE;
1027 len += 8;
1028 }
1029 if (iap->ia_valid & ATTR_MODE) {
1030 bmval[1] |= FATTR4_WORD1_MODE;
1031 len += 4;
1032 }
1033 if (iap->ia_valid & ATTR_UID) {
1034 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1035 if (owner_namelen < 0) {
1036 dprintk("nfs: couldn't resolve uid %d to string\n",
1037 from_kuid(&init_user_ns, iap->ia_uid));
1038 /* XXX */
1039 strcpy(owner_name, "nobody");
1040 owner_namelen = sizeof("nobody") - 1;
1041 /* goto out; */
1042 }
1043 bmval[1] |= FATTR4_WORD1_OWNER;
1044 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1045 }
1046 if (iap->ia_valid & ATTR_GID) {
1047 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1048 if (owner_grouplen < 0) {
1049 dprintk("nfs: couldn't resolve gid %d to string\n",
1050 from_kgid(&init_user_ns, iap->ia_gid));
1051 strcpy(owner_group, "nobody");
1052 owner_grouplen = sizeof("nobody") - 1;
1053 /* goto out; */
1054 }
1055 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1056 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1057 }
1058 if (iap->ia_valid & ATTR_ATIME_SET) {
1059 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1060 len += 16;
1061 } else if (iap->ia_valid & ATTR_ATIME) {
1062 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1063 len += 4;
1064 }
1065 if (iap->ia_valid & ATTR_MTIME_SET) {
1066 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1067 len += 16;
1068 } else if (iap->ia_valid & ATTR_MTIME) {
1069 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1070 len += 4;
1071 }
1072
1073 if (excl_check) {
1074 const u32 *excl_bmval = server->exclcreat_bitmask;
1075 bmval[0] &= excl_bmval[0];
1076 bmval[1] &= excl_bmval[1];
1077 bmval[2] &= excl_bmval[2];
1078
1079 if (!(excl_bmval[2] & FATTR4_WORD2_SECURITY_LABEL))
1080 label = NULL;
1081 }
1082
1083 if (label) {
1084 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1085 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1086 }
1087
1088 if (bmval[2] != 0)
1089 bmval_len = 3;
1090 else if (bmval[1] != 0)
1091 bmval_len = 2;
1092 else
1093 bmval_len = 1;
1094
1095 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
1096
1097 *p++ = cpu_to_be32(bmval_len);
1098 for (i = 0; i < bmval_len; i++)
1099 *p++ = cpu_to_be32(bmval[i]);
1100 *p++ = cpu_to_be32(len);
1101
1102 if (bmval[0] & FATTR4_WORD0_SIZE)
1103 p = xdr_encode_hyper(p, iap->ia_size);
1104 if (bmval[1] & FATTR4_WORD1_MODE)
1105 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1106 if (bmval[1] & FATTR4_WORD1_OWNER)
1107 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1108 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1109 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1110 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1111 if (iap->ia_valid & ATTR_ATIME_SET) {
1112 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1113 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1114 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1115 } else
1116 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1117 }
1118 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1119 if (iap->ia_valid & ATTR_MTIME_SET) {
1120 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1121 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1122 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1123 } else
1124 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1125 }
1126 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
1127 *p++ = cpu_to_be32(label->lfs);
1128 *p++ = cpu_to_be32(label->pi);
1129 *p++ = cpu_to_be32(label->len);
1130 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1131 }
1132
1133/* out: */
1134}
1135
1136static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1137{
1138 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1139 encode_uint32(xdr, access);
1140}
1141
1142static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1143{
1144 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1145 encode_nfs4_seqid(xdr, arg->seqid);
1146 encode_nfs4_stateid(xdr, &arg->stateid);
1147}
1148
1149static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1150{
1151 __be32 *p;
1152
1153 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1154 p = reserve_space(xdr, 12);
1155 p = xdr_encode_hyper(p, args->offset);
1156 *p = cpu_to_be32(args->count);
1157}
1158
1159static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1160{
1161 __be32 *p;
1162
1163 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1164 encode_uint32(xdr, create->ftype);
1165
1166 switch (create->ftype) {
1167 case NF4LNK:
1168 p = reserve_space(xdr, 4);
1169 *p = cpu_to_be32(create->u.symlink.len);
1170 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1171 create->u.symlink.len);
1172 xdr->buf->flags |= XDRBUF_WRITE;
1173 break;
1174
1175 case NF4BLK: case NF4CHR:
1176 p = reserve_space(xdr, 8);
1177 *p++ = cpu_to_be32(create->u.device.specdata1);
1178 *p = cpu_to_be32(create->u.device.specdata2);
1179 break;
1180
1181 default:
1182 break;
1183 }
1184
1185 encode_string(xdr, create->name->len, create->name->name);
1186 encode_attrs(xdr, create->attrs, create->label, create->server, false);
1187}
1188
1189static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1190{
1191 __be32 *p;
1192
1193 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1194 p = reserve_space(xdr, 8);
1195 *p++ = cpu_to_be32(1);
1196 *p = cpu_to_be32(bitmap);
1197}
1198
1199static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1200{
1201 __be32 *p;
1202
1203 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1204 p = reserve_space(xdr, 12);
1205 *p++ = cpu_to_be32(2);
1206 *p++ = cpu_to_be32(bm0);
1207 *p = cpu_to_be32(bm1);
1208}
1209
1210static void
1211encode_getattr_three(struct xdr_stream *xdr,
1212 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1213 struct compound_hdr *hdr)
1214{
1215 __be32 *p;
1216
1217 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1218 if (bm2) {
1219 p = reserve_space(xdr, 16);
1220 *p++ = cpu_to_be32(3);
1221 *p++ = cpu_to_be32(bm0);
1222 *p++ = cpu_to_be32(bm1);
1223 *p = cpu_to_be32(bm2);
1224 } else if (bm1) {
1225 p = reserve_space(xdr, 12);
1226 *p++ = cpu_to_be32(2);
1227 *p++ = cpu_to_be32(bm0);
1228 *p = cpu_to_be32(bm1);
1229 } else {
1230 p = reserve_space(xdr, 8);
1231 *p++ = cpu_to_be32(1);
1232 *p = cpu_to_be32(bm0);
1233 }
1234}
1235
1236static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1237{
1238 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1239 bitmask[1] & nfs4_fattr_bitmap[1],
1240 bitmask[2] & nfs4_fattr_bitmap[2],
1241 hdr);
1242}
1243
1244static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1245 const u32 *open_bitmap,
1246 struct compound_hdr *hdr)
1247{
1248 encode_getattr_three(xdr,
1249 bitmask[0] & open_bitmap[0],
1250 bitmask[1] & open_bitmap[1],
1251 bitmask[2] & open_bitmap[2],
1252 hdr);
1253}
1254
1255static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1256{
1257 encode_getattr_three(xdr,
1258 bitmask[0] & nfs4_fsinfo_bitmap[0],
1259 bitmask[1] & nfs4_fsinfo_bitmap[1],
1260 bitmask[2] & nfs4_fsinfo_bitmap[2],
1261 hdr);
1262}
1263
1264static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1265{
1266 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1267 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1268}
1269
1270static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1271{
1272 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1273}
1274
1275static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1276{
1277 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1278 encode_string(xdr, name->len, name->name);
1279}
1280
1281static inline int nfs4_lock_type(struct file_lock *fl, int block)
1282{
1283 if (fl->fl_type == F_RDLCK)
1284 return block ? NFS4_READW_LT : NFS4_READ_LT;
1285 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1286}
1287
1288static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1289{
1290 if (fl->fl_end == OFFSET_MAX)
1291 return ~(uint64_t)0;
1292 return fl->fl_end - fl->fl_start + 1;
1293}
1294
1295static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1296{
1297 __be32 *p;
1298
1299 p = reserve_space(xdr, 32);
1300 p = xdr_encode_hyper(p, lowner->clientid);
1301 *p++ = cpu_to_be32(20);
1302 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1303 *p++ = cpu_to_be32(lowner->s_dev);
1304 xdr_encode_hyper(p, lowner->id);
1305}
1306
1307/*
1308 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1309 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1310 */
1311static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1312{
1313 __be32 *p;
1314
1315 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1316 p = reserve_space(xdr, 28);
1317 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1318 *p++ = cpu_to_be32(args->reclaim);
1319 p = xdr_encode_hyper(p, args->fl->fl_start);
1320 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1321 *p = cpu_to_be32(args->new_lock_owner);
1322 if (args->new_lock_owner){
1323 encode_nfs4_seqid(xdr, args->open_seqid);
1324 encode_nfs4_stateid(xdr, &args->open_stateid);
1325 encode_nfs4_seqid(xdr, args->lock_seqid);
1326 encode_lockowner(xdr, &args->lock_owner);
1327 }
1328 else {
1329 encode_nfs4_stateid(xdr, &args->lock_stateid);
1330 encode_nfs4_seqid(xdr, args->lock_seqid);
1331 }
1332}
1333
1334static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1335{
1336 __be32 *p;
1337
1338 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1339 p = reserve_space(xdr, 20);
1340 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1341 p = xdr_encode_hyper(p, args->fl->fl_start);
1342 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1343 encode_lockowner(xdr, &args->lock_owner);
1344}
1345
1346static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1347{
1348 __be32 *p;
1349
1350 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1351 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1352 encode_nfs4_seqid(xdr, args->seqid);
1353 encode_nfs4_stateid(xdr, &args->stateid);
1354 p = reserve_space(xdr, 16);
1355 p = xdr_encode_hyper(p, args->fl->fl_start);
1356 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1357}
1358
1359static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1360{
1361 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1362 encode_lockowner(xdr, lowner);
1363}
1364
1365static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1366{
1367 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1368 encode_string(xdr, name->len, name->name);
1369}
1370
1371static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1372{
1373 __be32 *p;
1374
1375 p = reserve_space(xdr, 8);
1376 *p++ = cpu_to_be32(share_access);
1377 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1378}
1379
1380static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1381{
1382 __be32 *p;
1383 /*
1384 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1385 * owner 4 = 32
1386 */
1387 encode_nfs4_seqid(xdr, arg->seqid);
1388 encode_share_access(xdr, arg->share_access);
1389 p = reserve_space(xdr, 36);
1390 p = xdr_encode_hyper(p, arg->clientid);
1391 *p++ = cpu_to_be32(24);
1392 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1393 *p++ = cpu_to_be32(arg->server->s_dev);
1394 *p++ = cpu_to_be32(arg->id.uniquifier);
1395 xdr_encode_hyper(p, arg->id.create_time);
1396}
1397
1398static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1399{
1400 __be32 *p;
1401
1402 p = reserve_space(xdr, 4);
1403 switch(arg->createmode) {
1404 case NFS4_CREATE_UNCHECKED:
1405 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1406 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
1407 break;
1408 case NFS4_CREATE_GUARDED:
1409 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1410 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
1411 break;
1412 case NFS4_CREATE_EXCLUSIVE:
1413 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1414 encode_nfs4_verifier(xdr, &arg->u.verifier);
1415 break;
1416 case NFS4_CREATE_EXCLUSIVE4_1:
1417 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1418 encode_nfs4_verifier(xdr, &arg->u.verifier);
1419 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, true);
1420 }
1421}
1422
1423static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1424{
1425 __be32 *p;
1426
1427 p = reserve_space(xdr, 4);
1428 switch (arg->open_flags & O_CREAT) {
1429 case 0:
1430 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1431 break;
1432 default:
1433 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1434 encode_createmode(xdr, arg);
1435 }
1436}
1437
1438static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1439{
1440 __be32 *p;
1441
1442 p = reserve_space(xdr, 4);
1443 switch (delegation_type) {
1444 case 0:
1445 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1446 break;
1447 case FMODE_READ:
1448 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1449 break;
1450 case FMODE_WRITE|FMODE_READ:
1451 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1452 break;
1453 default:
1454 BUG();
1455 }
1456}
1457
1458static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1459{
1460 __be32 *p;
1461
1462 p = reserve_space(xdr, 4);
1463 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1464 encode_string(xdr, name->len, name->name);
1465}
1466
1467static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1468{
1469 __be32 *p;
1470
1471 p = reserve_space(xdr, 4);
1472 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1473 encode_delegation_type(xdr, type);
1474}
1475
1476static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1477{
1478 __be32 *p;
1479
1480 p = reserve_space(xdr, 4);
1481 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1482 encode_nfs4_stateid(xdr, stateid);
1483 encode_string(xdr, name->len, name->name);
1484}
1485
1486static inline void encode_claim_fh(struct xdr_stream *xdr)
1487{
1488 __be32 *p;
1489
1490 p = reserve_space(xdr, 4);
1491 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1492}
1493
1494static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1495{
1496 __be32 *p;
1497
1498 p = reserve_space(xdr, 4);
1499 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1500 encode_nfs4_stateid(xdr, stateid);
1501}
1502
1503static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1504{
1505 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1506 encode_openhdr(xdr, arg);
1507 encode_opentype(xdr, arg);
1508 switch (arg->claim) {
1509 case NFS4_OPEN_CLAIM_NULL:
1510 encode_claim_null(xdr, arg->name);
1511 break;
1512 case NFS4_OPEN_CLAIM_PREVIOUS:
1513 encode_claim_previous(xdr, arg->u.delegation_type);
1514 break;
1515 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1516 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1517 break;
1518 case NFS4_OPEN_CLAIM_FH:
1519 encode_claim_fh(xdr);
1520 break;
1521 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1522 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1523 break;
1524 default:
1525 BUG();
1526 }
1527}
1528
1529static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1530{
1531 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1532 encode_nfs4_stateid(xdr, arg->stateid);
1533 encode_nfs4_seqid(xdr, arg->seqid);
1534}
1535
1536static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1537{
1538 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1539 encode_nfs4_stateid(xdr, &arg->stateid);
1540 encode_nfs4_seqid(xdr, arg->seqid);
1541 encode_share_access(xdr, arg->share_access);
1542}
1543
1544static void
1545encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1546{
1547 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1548 encode_string(xdr, fh->size, fh->data);
1549}
1550
1551static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1552{
1553 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1554}
1555
1556static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1557 struct compound_hdr *hdr)
1558{
1559 __be32 *p;
1560
1561 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1562 encode_nfs4_stateid(xdr, &args->stateid);
1563
1564 p = reserve_space(xdr, 12);
1565 p = xdr_encode_hyper(p, args->offset);
1566 *p = cpu_to_be32(args->count);
1567}
1568
1569static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1570{
1571 uint32_t attrs[3] = {
1572 FATTR4_WORD0_RDATTR_ERROR,
1573 FATTR4_WORD1_MOUNTED_ON_FILEID,
1574 };
1575 uint32_t dircount = readdir->count >> 1;
1576 __be32 *p, verf[2];
1577 uint32_t attrlen = 0;
1578 unsigned int i;
1579
1580 if (readdir->plus) {
1581 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1582 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1583 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1584 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1585 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1586 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1587 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1588 dircount >>= 1;
1589 }
1590 /* Use mounted_on_fileid only if the server supports it */
1591 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1592 attrs[0] |= FATTR4_WORD0_FILEID;
1593 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1594 attrs[i] &= readdir->bitmask[i];
1595 if (attrs[i] != 0)
1596 attrlen = i+1;
1597 }
1598
1599 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1600 encode_uint64(xdr, readdir->cookie);
1601 encode_nfs4_verifier(xdr, &readdir->verifier);
1602 p = reserve_space(xdr, 12 + (attrlen << 2));
1603 *p++ = cpu_to_be32(dircount);
1604 *p++ = cpu_to_be32(readdir->count);
1605 *p++ = cpu_to_be32(attrlen);
1606 for (i = 0; i < attrlen; i++)
1607 *p++ = cpu_to_be32(attrs[i]);
1608 memcpy(verf, readdir->verifier.data, sizeof(verf));
1609
1610 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1611 __func__,
1612 (unsigned long long)readdir->cookie,
1613 verf[0], verf[1],
1614 attrs[0] & readdir->bitmask[0],
1615 attrs[1] & readdir->bitmask[1],
1616 attrs[2] & readdir->bitmask[2]);
1617}
1618
1619static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1620{
1621 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1622}
1623
1624static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1625{
1626 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1627 encode_string(xdr, name->len, name->name);
1628}
1629
1630static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1631{
1632 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1633 encode_string(xdr, oldname->len, oldname->name);
1634 encode_string(xdr, newname->len, newname->name);
1635}
1636
1637static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1638 struct compound_hdr *hdr)
1639{
1640 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1641 encode_uint64(xdr, clid);
1642}
1643
1644static void
1645encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1646{
1647 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1648}
1649
1650static void
1651encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1652{
1653 __be32 *p;
1654
1655 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1656 encode_nfs4_stateid(xdr, &zero_stateid);
1657 p = reserve_space(xdr, 2*4);
1658 *p++ = cpu_to_be32(1);
1659 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1660 p = reserve_space(xdr, 4);
1661 *p = cpu_to_be32(arg->acl_len);
1662 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1663}
1664
1665static void
1666encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1667{
1668 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1669}
1670
1671static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1672{
1673 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1674 encode_nfs4_stateid(xdr, &arg->stateid);
1675 encode_attrs(xdr, arg->iap, arg->label, server, false);
1676}
1677
1678static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1679{
1680 __be32 *p;
1681
1682 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1683 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1684
1685 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1686 setclientid->sc_clnt->cl_owner_id);
1687 p = reserve_space(xdr, 4);
1688 *p = cpu_to_be32(setclientid->sc_prog);
1689 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1690 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1691 p = reserve_space(xdr, 4);
1692 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1693}
1694
1695static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1696{
1697 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1698 decode_setclientid_confirm_maxsz, hdr);
1699 encode_uint64(xdr, arg->clientid);
1700 encode_nfs4_verifier(xdr, &arg->confirm);
1701}
1702
1703static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1704 struct compound_hdr *hdr)
1705{
1706 __be32 *p;
1707
1708 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1709 encode_nfs4_stateid(xdr, &args->stateid);
1710
1711 p = reserve_space(xdr, 16);
1712 p = xdr_encode_hyper(p, args->offset);
1713 *p++ = cpu_to_be32(args->stable);
1714 *p = cpu_to_be32(args->count);
1715
1716 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1717}
1718
1719static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1720{
1721 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1722 encode_nfs4_stateid(xdr, stateid);
1723}
1724
1725static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1726{
1727 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1728 encode_string(xdr, name->len, name->name);
1729}
1730
1731#if defined(CONFIG_NFS_V4_1)
1732/* NFSv4.1 operations */
1733static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1734 struct nfs41_bind_conn_to_session_args *args,
1735 struct compound_hdr *hdr)
1736{
1737 __be32 *p;
1738
1739 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1740 decode_bind_conn_to_session_maxsz, hdr);
1741 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1742 p = xdr_reserve_space(xdr, 8);
1743 *p++ = cpu_to_be32(args->dir);
1744 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1745}
1746
1747static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
1748{
1749 unsigned int i;
1750 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1751 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1752 encode_uint32(xdr, op_map->u.words[i]);
1753}
1754
1755static void encode_exchange_id(struct xdr_stream *xdr,
1756 struct nfs41_exchange_id_args *args,
1757 struct compound_hdr *hdr)
1758{
1759 __be32 *p;
1760 char impl_name[IMPL_NAME_LIMIT];
1761 int len = 0;
1762
1763 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1764 encode_nfs4_verifier(xdr, args->verifier);
1765
1766 encode_string(xdr, strlen(args->client->cl_owner_id),
1767 args->client->cl_owner_id);
1768
1769 encode_uint32(xdr, args->flags);
1770 encode_uint32(xdr, args->state_protect.how);
1771
1772 switch (args->state_protect.how) {
1773 case SP4_NONE:
1774 break;
1775 case SP4_MACH_CRED:
1776 encode_op_map(xdr, &args->state_protect.enforce);
1777 encode_op_map(xdr, &args->state_protect.allow);
1778 break;
1779 default:
1780 WARN_ON_ONCE(1);
1781 break;
1782 }
1783
1784 if (send_implementation_id &&
1785 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1786 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1787 <= sizeof(impl_name) + 1)
1788 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1789 utsname()->sysname, utsname()->release,
1790 utsname()->version, utsname()->machine);
1791
1792 if (len > 0) {
1793 encode_uint32(xdr, 1); /* implementation id array length=1 */
1794
1795 encode_string(xdr,
1796 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1797 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1798 encode_string(xdr, len, impl_name);
1799 /* just send zeros for nii_date - the date is in nii_name */
1800 p = reserve_space(xdr, 12);
1801 p = xdr_encode_hyper(p, 0);
1802 *p = cpu_to_be32(0);
1803 } else
1804 encode_uint32(xdr, 0); /* implementation id array length=0 */
1805}
1806
1807static void encode_create_session(struct xdr_stream *xdr,
1808 struct nfs41_create_session_args *args,
1809 struct compound_hdr *hdr)
1810{
1811 __be32 *p;
1812 struct nfs_client *clp = args->client;
1813 struct rpc_clnt *clnt = clp->cl_rpcclient;
1814 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1815 u32 max_resp_sz_cached;
1816
1817 /*
1818 * Assumes OPEN is the biggest non-idempotent compound.
1819 * 2 is the verifier.
1820 */
1821 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1822 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1823
1824 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1825 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1826 p = xdr_encode_hyper(p, args->clientid);
1827 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1828 *p++ = cpu_to_be32(args->flags); /*flags */
1829
1830 /* Fore Channel */
1831 *p++ = cpu_to_be32(0); /* header padding size */
1832 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1833 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1834 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1835 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1836 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1837 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1838
1839 /* Back Channel */
1840 *p++ = cpu_to_be32(0); /* header padding size */
1841 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1842 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1843 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1844 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1845 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1846 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1847
1848 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1849 *p++ = cpu_to_be32(1);
1850 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1851
1852 /* authsys_parms rfc1831 */
1853 *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */
1854 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1855 *p++ = cpu_to_be32(0); /* UID */
1856 *p++ = cpu_to_be32(0); /* GID */
1857 *p = cpu_to_be32(0); /* No more gids */
1858}
1859
1860static void encode_destroy_session(struct xdr_stream *xdr,
1861 struct nfs4_session *session,
1862 struct compound_hdr *hdr)
1863{
1864 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1865 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1866}
1867
1868static void encode_destroy_clientid(struct xdr_stream *xdr,
1869 uint64_t clientid,
1870 struct compound_hdr *hdr)
1871{
1872 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1873 encode_uint64(xdr, clientid);
1874}
1875
1876static void encode_reclaim_complete(struct xdr_stream *xdr,
1877 struct nfs41_reclaim_complete_args *args,
1878 struct compound_hdr *hdr)
1879{
1880 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1881 encode_uint32(xdr, args->one_fs);
1882}
1883#endif /* CONFIG_NFS_V4_1 */
1884
1885static void encode_sequence(struct xdr_stream *xdr,
1886 const struct nfs4_sequence_args *args,
1887 struct compound_hdr *hdr)
1888{
1889#if defined(CONFIG_NFS_V4_1)
1890 struct nfs4_session *session;
1891 struct nfs4_slot_table *tp;
1892 struct nfs4_slot *slot = args->sa_slot;
1893 __be32 *p;
1894
1895 tp = slot->table;
1896 session = tp->session;
1897 if (!session)
1898 return;
1899
1900 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1901
1902 /*
1903 * Sessionid + seqid + slotid + max slotid + cache_this
1904 */
1905 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1906 "max_slotid=%d cache_this=%d\n",
1907 __func__,
1908 ((u32 *)session->sess_id.data)[0],
1909 ((u32 *)session->sess_id.data)[1],
1910 ((u32 *)session->sess_id.data)[2],
1911 ((u32 *)session->sess_id.data)[3],
1912 slot->seq_nr, slot->slot_nr,
1913 tp->highest_used_slotid, args->sa_cache_this);
1914 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1915 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1916 *p++ = cpu_to_be32(slot->seq_nr);
1917 *p++ = cpu_to_be32(slot->slot_nr);
1918 *p++ = cpu_to_be32(tp->highest_used_slotid);
1919 *p = cpu_to_be32(args->sa_cache_this);
1920#endif /* CONFIG_NFS_V4_1 */
1921}
1922
1923#ifdef CONFIG_NFS_V4_1
1924static void
1925encode_getdeviceinfo(struct xdr_stream *xdr,
1926 const struct nfs4_getdeviceinfo_args *args,
1927 struct compound_hdr *hdr)
1928{
1929 __be32 *p;
1930
1931 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1932 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1933 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1934 NFS4_DEVICEID4_SIZE);
1935 *p++ = cpu_to_be32(args->pdev->layout_type);
1936 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1937
1938 p = reserve_space(xdr, 4 + 4);
1939 *p++ = cpu_to_be32(1); /* bitmap length */
1940 *p++ = cpu_to_be32(args->notify_types);
1941}
1942
1943static void
1944encode_layoutget(struct xdr_stream *xdr,
1945 const struct nfs4_layoutget_args *args,
1946 struct compound_hdr *hdr)
1947{
1948 __be32 *p;
1949
1950 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1951 p = reserve_space(xdr, 36);
1952 *p++ = cpu_to_be32(0); /* Signal layout available */
1953 *p++ = cpu_to_be32(args->type);
1954 *p++ = cpu_to_be32(args->range.iomode);
1955 p = xdr_encode_hyper(p, args->range.offset);
1956 p = xdr_encode_hyper(p, args->range.length);
1957 p = xdr_encode_hyper(p, args->minlength);
1958 encode_nfs4_stateid(xdr, &args->stateid);
1959 encode_uint32(xdr, args->maxcount);
1960
1961 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1962 __func__,
1963 args->type,
1964 args->range.iomode,
1965 (unsigned long)args->range.offset,
1966 (unsigned long)args->range.length,
1967 args->maxcount);
1968}
1969
1970static int
1971encode_layoutcommit(struct xdr_stream *xdr,
1972 struct inode *inode,
1973 struct nfs4_layoutcommit_args *args,
1974 struct compound_hdr *hdr)
1975{
1976 __be32 *p;
1977
1978 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1979 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1980
1981 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1982 p = reserve_space(xdr, 20);
1983 /* Only whole file layouts */
1984 p = xdr_encode_hyper(p, 0); /* offset */
1985 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1986 *p = cpu_to_be32(0); /* reclaim */
1987 encode_nfs4_stateid(xdr, &args->stateid);
1988 p = reserve_space(xdr, 20);
1989 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1990 p = xdr_encode_hyper(p, args->lastbytewritten);
1991 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1992 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1993
1994 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) {
1995 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1996 NFS_I(inode)->layout, xdr, args);
1997 } else {
1998 encode_uint32(xdr, args->layoutupdate_len);
1999 if (args->layoutupdate_pages) {
2000 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2001 args->layoutupdate_len);
2002 }
2003 }
2004
2005 return 0;
2006}
2007
2008static void
2009encode_layoutreturn(struct xdr_stream *xdr,
2010 const struct nfs4_layoutreturn_args *args,
2011 struct compound_hdr *hdr)
2012{
2013 __be32 *p;
2014
2015 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2016 p = reserve_space(xdr, 16);
2017 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2018 *p++ = cpu_to_be32(args->layout_type);
2019 *p++ = cpu_to_be32(args->range.iomode);
2020 *p = cpu_to_be32(RETURN_FILE);
2021 p = reserve_space(xdr, 16);
2022 p = xdr_encode_hyper(p, args->range.offset);
2023 p = xdr_encode_hyper(p, args->range.length);
2024 spin_lock(&args->inode->i_lock);
2025 encode_nfs4_stateid(xdr, &args->stateid);
2026 spin_unlock(&args->inode->i_lock);
2027 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2028 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2029 NFS_I(args->inode)->layout, xdr, args);
2030 } else
2031 encode_uint32(xdr, 0);
2032}
2033
2034static int
2035encode_secinfo_no_name(struct xdr_stream *xdr,
2036 const struct nfs41_secinfo_no_name_args *args,
2037 struct compound_hdr *hdr)
2038{
2039 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2040 encode_uint32(xdr, args->style);
2041 return 0;
2042}
2043
2044static void encode_test_stateid(struct xdr_stream *xdr,
2045 struct nfs41_test_stateid_args *args,
2046 struct compound_hdr *hdr)
2047{
2048 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2049 encode_uint32(xdr, 1);
2050 encode_nfs4_stateid(xdr, args->stateid);
2051}
2052
2053static void encode_free_stateid(struct xdr_stream *xdr,
2054 struct nfs41_free_stateid_args *args,
2055 struct compound_hdr *hdr)
2056{
2057 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2058 encode_nfs4_stateid(xdr, &args->stateid);
2059}
2060#endif /* CONFIG_NFS_V4_1 */
2061
2062/*
2063 * END OF "GENERIC" ENCODE ROUTINES.
2064 */
2065
2066static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2067{
2068#if defined(CONFIG_NFS_V4_1)
2069 struct nfs4_session *session = args->sa_slot->table->session;
2070 if (session)
2071 return session->clp->cl_mvops->minor_version;
2072#endif /* CONFIG_NFS_V4_1 */
2073 return 0;
2074}
2075
2076/*
2077 * Encode an ACCESS request
2078 */
2079static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2080 const struct nfs4_accessargs *args)
2081{
2082 struct compound_hdr hdr = {
2083 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2084 };
2085
2086 encode_compound_hdr(xdr, req, &hdr);
2087 encode_sequence(xdr, &args->seq_args, &hdr);
2088 encode_putfh(xdr, args->fh, &hdr);
2089 encode_access(xdr, args->access, &hdr);
2090 encode_getfattr(xdr, args->bitmask, &hdr);
2091 encode_nops(&hdr);
2092}
2093
2094/*
2095 * Encode LOOKUP request
2096 */
2097static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2098 const struct nfs4_lookup_arg *args)
2099{
2100 struct compound_hdr hdr = {
2101 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2102 };
2103
2104 encode_compound_hdr(xdr, req, &hdr);
2105 encode_sequence(xdr, &args->seq_args, &hdr);
2106 encode_putfh(xdr, args->dir_fh, &hdr);
2107 encode_lookup(xdr, args->name, &hdr);
2108 encode_getfh(xdr, &hdr);
2109 encode_getfattr(xdr, args->bitmask, &hdr);
2110 encode_nops(&hdr);
2111}
2112
2113/*
2114 * Encode LOOKUP_ROOT request
2115 */
2116static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2117 struct xdr_stream *xdr,
2118 const struct nfs4_lookup_root_arg *args)
2119{
2120 struct compound_hdr hdr = {
2121 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2122 };
2123
2124 encode_compound_hdr(xdr, req, &hdr);
2125 encode_sequence(xdr, &args->seq_args, &hdr);
2126 encode_putrootfh(xdr, &hdr);
2127 encode_getfh(xdr, &hdr);
2128 encode_getfattr(xdr, args->bitmask, &hdr);
2129 encode_nops(&hdr);
2130}
2131
2132/*
2133 * Encode REMOVE request
2134 */
2135static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2136 const struct nfs_removeargs *args)
2137{
2138 struct compound_hdr hdr = {
2139 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2140 };
2141
2142 encode_compound_hdr(xdr, req, &hdr);
2143 encode_sequence(xdr, &args->seq_args, &hdr);
2144 encode_putfh(xdr, args->fh, &hdr);
2145 encode_remove(xdr, &args->name, &hdr);
2146 encode_nops(&hdr);
2147}
2148
2149/*
2150 * Encode RENAME request
2151 */
2152static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2153 const struct nfs_renameargs *args)
2154{
2155 struct compound_hdr hdr = {
2156 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2157 };
2158
2159 encode_compound_hdr(xdr, req, &hdr);
2160 encode_sequence(xdr, &args->seq_args, &hdr);
2161 encode_putfh(xdr, args->old_dir, &hdr);
2162 encode_savefh(xdr, &hdr);
2163 encode_putfh(xdr, args->new_dir, &hdr);
2164 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2165 encode_nops(&hdr);
2166}
2167
2168/*
2169 * Encode LINK request
2170 */
2171static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2172 const struct nfs4_link_arg *args)
2173{
2174 struct compound_hdr hdr = {
2175 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2176 };
2177
2178 encode_compound_hdr(xdr, req, &hdr);
2179 encode_sequence(xdr, &args->seq_args, &hdr);
2180 encode_putfh(xdr, args->fh, &hdr);
2181 encode_savefh(xdr, &hdr);
2182 encode_putfh(xdr, args->dir_fh, &hdr);
2183 encode_link(xdr, args->name, &hdr);
2184 encode_restorefh(xdr, &hdr);
2185 encode_getfattr(xdr, args->bitmask, &hdr);
2186 encode_nops(&hdr);
2187}
2188
2189/*
2190 * Encode CREATE request
2191 */
2192static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2193 const struct nfs4_create_arg *args)
2194{
2195 struct compound_hdr hdr = {
2196 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2197 };
2198
2199 encode_compound_hdr(xdr, req, &hdr);
2200 encode_sequence(xdr, &args->seq_args, &hdr);
2201 encode_putfh(xdr, args->dir_fh, &hdr);
2202 encode_create(xdr, args, &hdr);
2203 encode_getfh(xdr, &hdr);
2204 encode_getfattr(xdr, args->bitmask, &hdr);
2205 encode_nops(&hdr);
2206}
2207
2208/*
2209 * Encode SYMLINK request
2210 */
2211static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2212 const struct nfs4_create_arg *args)
2213{
2214 nfs4_xdr_enc_create(req, xdr, args);
2215}
2216
2217/*
2218 * Encode GETATTR request
2219 */
2220static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2221 const struct nfs4_getattr_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->fh, &hdr);
2230 encode_getfattr(xdr, args->bitmask, &hdr);
2231 encode_nops(&hdr);
2232}
2233
2234/*
2235 * Encode a CLOSE request
2236 */
2237static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2238 struct nfs_closeargs *args)
2239{
2240 struct compound_hdr hdr = {
2241 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2242 };
2243
2244 encode_compound_hdr(xdr, req, &hdr);
2245 encode_sequence(xdr, &args->seq_args, &hdr);
2246 encode_putfh(xdr, args->fh, &hdr);
2247 encode_close(xdr, args, &hdr);
2248 encode_getfattr(xdr, args->bitmask, &hdr);
2249 encode_nops(&hdr);
2250}
2251
2252/*
2253 * Encode an OPEN request
2254 */
2255static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2256 struct nfs_openargs *args)
2257{
2258 struct compound_hdr hdr = {
2259 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2260 };
2261
2262 encode_compound_hdr(xdr, req, &hdr);
2263 encode_sequence(xdr, &args->seq_args, &hdr);
2264 encode_putfh(xdr, args->fh, &hdr);
2265 encode_open(xdr, args, &hdr);
2266 encode_getfh(xdr, &hdr);
2267 if (args->access)
2268 encode_access(xdr, args->access, &hdr);
2269 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2270 encode_nops(&hdr);
2271}
2272
2273/*
2274 * Encode an OPEN_CONFIRM request
2275 */
2276static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2277 struct xdr_stream *xdr,
2278 struct nfs_open_confirmargs *args)
2279{
2280 struct compound_hdr hdr = {
2281 .nops = 0,
2282 };
2283
2284 encode_compound_hdr(xdr, req, &hdr);
2285 encode_putfh(xdr, args->fh, &hdr);
2286 encode_open_confirm(xdr, args, &hdr);
2287 encode_nops(&hdr);
2288}
2289
2290/*
2291 * Encode an OPEN request with no attributes.
2292 */
2293static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2294 struct xdr_stream *xdr,
2295 struct nfs_openargs *args)
2296{
2297 struct compound_hdr hdr = {
2298 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2299 };
2300
2301 encode_compound_hdr(xdr, req, &hdr);
2302 encode_sequence(xdr, &args->seq_args, &hdr);
2303 encode_putfh(xdr, args->fh, &hdr);
2304 encode_open(xdr, args, &hdr);
2305 if (args->access)
2306 encode_access(xdr, args->access, &hdr);
2307 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2308 encode_nops(&hdr);
2309}
2310
2311/*
2312 * Encode an OPEN_DOWNGRADE request
2313 */
2314static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2315 struct xdr_stream *xdr,
2316 struct nfs_closeargs *args)
2317{
2318 struct compound_hdr hdr = {
2319 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2320 };
2321
2322 encode_compound_hdr(xdr, req, &hdr);
2323 encode_sequence(xdr, &args->seq_args, &hdr);
2324 encode_putfh(xdr, args->fh, &hdr);
2325 encode_open_downgrade(xdr, args, &hdr);
2326 encode_getfattr(xdr, args->bitmask, &hdr);
2327 encode_nops(&hdr);
2328}
2329
2330/*
2331 * Encode a LOCK request
2332 */
2333static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2334 struct nfs_lock_args *args)
2335{
2336 struct compound_hdr hdr = {
2337 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2338 };
2339
2340 encode_compound_hdr(xdr, req, &hdr);
2341 encode_sequence(xdr, &args->seq_args, &hdr);
2342 encode_putfh(xdr, args->fh, &hdr);
2343 encode_lock(xdr, args, &hdr);
2344 encode_nops(&hdr);
2345}
2346
2347/*
2348 * Encode a LOCKT request
2349 */
2350static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2351 struct nfs_lockt_args *args)
2352{
2353 struct compound_hdr hdr = {
2354 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2355 };
2356
2357 encode_compound_hdr(xdr, req, &hdr);
2358 encode_sequence(xdr, &args->seq_args, &hdr);
2359 encode_putfh(xdr, args->fh, &hdr);
2360 encode_lockt(xdr, args, &hdr);
2361 encode_nops(&hdr);
2362}
2363
2364/*
2365 * Encode a LOCKU request
2366 */
2367static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2368 struct nfs_locku_args *args)
2369{
2370 struct compound_hdr hdr = {
2371 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2372 };
2373
2374 encode_compound_hdr(xdr, req, &hdr);
2375 encode_sequence(xdr, &args->seq_args, &hdr);
2376 encode_putfh(xdr, args->fh, &hdr);
2377 encode_locku(xdr, args, &hdr);
2378 encode_nops(&hdr);
2379}
2380
2381static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2382 struct xdr_stream *xdr,
2383 struct nfs_release_lockowner_args *args)
2384{
2385 struct compound_hdr hdr = {
2386 .minorversion = 0,
2387 };
2388
2389 encode_compound_hdr(xdr, req, &hdr);
2390 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2391 encode_nops(&hdr);
2392}
2393
2394/*
2395 * Encode a READLINK request
2396 */
2397static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2398 const struct nfs4_readlink *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_readlink(xdr, args, req, &hdr);
2408
2409 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2410 args->pgbase, args->pglen);
2411 encode_nops(&hdr);
2412}
2413
2414/*
2415 * Encode a READDIR request
2416 */
2417static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2418 const struct nfs4_readdir_arg *args)
2419{
2420 struct compound_hdr hdr = {
2421 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2422 };
2423
2424 encode_compound_hdr(xdr, req, &hdr);
2425 encode_sequence(xdr, &args->seq_args, &hdr);
2426 encode_putfh(xdr, args->fh, &hdr);
2427 encode_readdir(xdr, args, req, &hdr);
2428
2429 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2430 args->pgbase, args->count);
2431 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2432 __func__, hdr.replen << 2, args->pages,
2433 args->pgbase, args->count);
2434 encode_nops(&hdr);
2435}
2436
2437/*
2438 * Encode a READ request
2439 */
2440static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2441 struct nfs_pgio_args *args)
2442{
2443 struct compound_hdr hdr = {
2444 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2445 };
2446
2447 encode_compound_hdr(xdr, req, &hdr);
2448 encode_sequence(xdr, &args->seq_args, &hdr);
2449 encode_putfh(xdr, args->fh, &hdr);
2450 encode_read(xdr, args, &hdr);
2451
2452 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2453 args->pages, args->pgbase, args->count);
2454 req->rq_rcv_buf.flags |= XDRBUF_READ;
2455 encode_nops(&hdr);
2456}
2457
2458/*
2459 * Encode an SETATTR request
2460 */
2461static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2462 struct nfs_setattrargs *args)
2463{
2464 struct compound_hdr hdr = {
2465 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2466 };
2467
2468 encode_compound_hdr(xdr, req, &hdr);
2469 encode_sequence(xdr, &args->seq_args, &hdr);
2470 encode_putfh(xdr, args->fh, &hdr);
2471 encode_setattr(xdr, args, args->server, &hdr);
2472 encode_getfattr(xdr, args->bitmask, &hdr);
2473 encode_nops(&hdr);
2474}
2475
2476/*
2477 * Encode a GETACL request
2478 */
2479static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2480 struct nfs_getaclargs *args)
2481{
2482 struct compound_hdr hdr = {
2483 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2484 };
2485 uint32_t replen;
2486
2487 encode_compound_hdr(xdr, req, &hdr);
2488 encode_sequence(xdr, &args->seq_args, &hdr);
2489 encode_putfh(xdr, args->fh, &hdr);
2490 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2491 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2492
2493 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2494 args->acl_pages, 0, args->acl_len);
2495
2496 encode_nops(&hdr);
2497}
2498
2499/*
2500 * Encode a WRITE request
2501 */
2502static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2503 struct nfs_pgio_args *args)
2504{
2505 struct compound_hdr hdr = {
2506 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2507 };
2508
2509 encode_compound_hdr(xdr, req, &hdr);
2510 encode_sequence(xdr, &args->seq_args, &hdr);
2511 encode_putfh(xdr, args->fh, &hdr);
2512 encode_write(xdr, args, &hdr);
2513 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2514 if (args->bitmask)
2515 encode_getfattr(xdr, args->bitmask, &hdr);
2516 encode_nops(&hdr);
2517}
2518
2519/*
2520 * a COMMIT request
2521 */
2522static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2523 struct nfs_commitargs *args)
2524{
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2527 };
2528
2529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_commit(xdr, args, &hdr);
2533 encode_nops(&hdr);
2534}
2535
2536/*
2537 * FSINFO request
2538 */
2539static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2540 struct nfs4_fsinfo_arg *args)
2541{
2542 struct compound_hdr hdr = {
2543 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2544 };
2545
2546 encode_compound_hdr(xdr, req, &hdr);
2547 encode_sequence(xdr, &args->seq_args, &hdr);
2548 encode_putfh(xdr, args->fh, &hdr);
2549 encode_fsinfo(xdr, args->bitmask, &hdr);
2550 encode_nops(&hdr);
2551}
2552
2553/*
2554 * a PATHCONF request
2555 */
2556static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2557 const struct nfs4_pathconf_arg *args)
2558{
2559 struct compound_hdr hdr = {
2560 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2561 };
2562
2563 encode_compound_hdr(xdr, req, &hdr);
2564 encode_sequence(xdr, &args->seq_args, &hdr);
2565 encode_putfh(xdr, args->fh, &hdr);
2566 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2567 &hdr);
2568 encode_nops(&hdr);
2569}
2570
2571/*
2572 * a STATFS request
2573 */
2574static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2575 const struct nfs4_statfs_arg *args)
2576{
2577 struct compound_hdr hdr = {
2578 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2579 };
2580
2581 encode_compound_hdr(xdr, req, &hdr);
2582 encode_sequence(xdr, &args->seq_args, &hdr);
2583 encode_putfh(xdr, args->fh, &hdr);
2584 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2585 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2586 encode_nops(&hdr);
2587}
2588
2589/*
2590 * GETATTR_BITMAP request
2591 */
2592static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2593 struct xdr_stream *xdr,
2594 struct nfs4_server_caps_arg *args)
2595{
2596 const u32 *bitmask = args->bitmask;
2597 struct compound_hdr hdr = {
2598 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2599 };
2600
2601 encode_compound_hdr(xdr, req, &hdr);
2602 encode_sequence(xdr, &args->seq_args, &hdr);
2603 encode_putfh(xdr, args->fhandle, &hdr);
2604 encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr);
2605 encode_nops(&hdr);
2606}
2607
2608/*
2609 * a RENEW request
2610 */
2611static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2612 struct nfs_client *clp)
2613{
2614 struct compound_hdr hdr = {
2615 .nops = 0,
2616 };
2617
2618 encode_compound_hdr(xdr, req, &hdr);
2619 encode_renew(xdr, clp->cl_clientid, &hdr);
2620 encode_nops(&hdr);
2621}
2622
2623/*
2624 * a SETCLIENTID request
2625 */
2626static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2627 struct xdr_stream *xdr,
2628 struct nfs4_setclientid *sc)
2629{
2630 struct compound_hdr hdr = {
2631 .nops = 0,
2632 };
2633
2634 encode_compound_hdr(xdr, req, &hdr);
2635 encode_setclientid(xdr, sc, &hdr);
2636 encode_nops(&hdr);
2637}
2638
2639/*
2640 * a SETCLIENTID_CONFIRM request
2641 */
2642static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2643 struct xdr_stream *xdr,
2644 struct nfs4_setclientid_res *arg)
2645{
2646 struct compound_hdr hdr = {
2647 .nops = 0,
2648 };
2649
2650 encode_compound_hdr(xdr, req, &hdr);
2651 encode_setclientid_confirm(xdr, arg, &hdr);
2652 encode_nops(&hdr);
2653}
2654
2655/*
2656 * DELEGRETURN request
2657 */
2658static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2659 struct xdr_stream *xdr,
2660 const struct nfs4_delegreturnargs *args)
2661{
2662 struct compound_hdr hdr = {
2663 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2664 };
2665
2666 encode_compound_hdr(xdr, req, &hdr);
2667 encode_sequence(xdr, &args->seq_args, &hdr);
2668 encode_putfh(xdr, args->fhandle, &hdr);
2669 encode_getfattr(xdr, args->bitmask, &hdr);
2670 encode_delegreturn(xdr, args->stateid, &hdr);
2671 encode_nops(&hdr);
2672}
2673
2674/*
2675 * Encode FS_LOCATIONS request
2676 */
2677static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2678 struct xdr_stream *xdr,
2679 struct nfs4_fs_locations_arg *args)
2680{
2681 struct compound_hdr hdr = {
2682 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2683 };
2684 uint32_t replen;
2685
2686 encode_compound_hdr(xdr, req, &hdr);
2687 encode_sequence(xdr, &args->seq_args, &hdr);
2688 if (args->migration) {
2689 encode_putfh(xdr, args->fh, &hdr);
2690 replen = hdr.replen;
2691 encode_fs_locations(xdr, args->bitmask, &hdr);
2692 if (args->renew)
2693 encode_renew(xdr, args->clientid, &hdr);
2694 } else {
2695 encode_putfh(xdr, args->dir_fh, &hdr);
2696 encode_lookup(xdr, args->name, &hdr);
2697 replen = hdr.replen;
2698 encode_fs_locations(xdr, args->bitmask, &hdr);
2699 }
2700
2701 /* Set up reply kvec to capture returned fs_locations array. */
2702 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2703 0, PAGE_SIZE);
2704 encode_nops(&hdr);
2705}
2706
2707/*
2708 * Encode SECINFO request
2709 */
2710static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2711 struct xdr_stream *xdr,
2712 struct nfs4_secinfo_arg *args)
2713{
2714 struct compound_hdr hdr = {
2715 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2716 };
2717
2718 encode_compound_hdr(xdr, req, &hdr);
2719 encode_sequence(xdr, &args->seq_args, &hdr);
2720 encode_putfh(xdr, args->dir_fh, &hdr);
2721 encode_secinfo(xdr, args->name, &hdr);
2722 encode_nops(&hdr);
2723}
2724
2725/*
2726 * Encode FSID_PRESENT request
2727 */
2728static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2729 struct xdr_stream *xdr,
2730 struct nfs4_fsid_present_arg *args)
2731{
2732 struct compound_hdr hdr = {
2733 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2734 };
2735
2736 encode_compound_hdr(xdr, req, &hdr);
2737 encode_sequence(xdr, &args->seq_args, &hdr);
2738 encode_putfh(xdr, args->fh, &hdr);
2739 encode_getfh(xdr, &hdr);
2740 if (args->renew)
2741 encode_renew(xdr, args->clientid, &hdr);
2742 encode_nops(&hdr);
2743}
2744
2745#if defined(CONFIG_NFS_V4_1)
2746/*
2747 * BIND_CONN_TO_SESSION request
2748 */
2749static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2750 struct xdr_stream *xdr,
2751 struct nfs41_bind_conn_to_session_args *args)
2752{
2753 struct compound_hdr hdr = {
2754 .minorversion = args->client->cl_mvops->minor_version,
2755 };
2756
2757 encode_compound_hdr(xdr, req, &hdr);
2758 encode_bind_conn_to_session(xdr, args, &hdr);
2759 encode_nops(&hdr);
2760}
2761
2762/*
2763 * EXCHANGE_ID request
2764 */
2765static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2766 struct xdr_stream *xdr,
2767 struct nfs41_exchange_id_args *args)
2768{
2769 struct compound_hdr hdr = {
2770 .minorversion = args->client->cl_mvops->minor_version,
2771 };
2772
2773 encode_compound_hdr(xdr, req, &hdr);
2774 encode_exchange_id(xdr, args, &hdr);
2775 encode_nops(&hdr);
2776}
2777
2778/*
2779 * a CREATE_SESSION request
2780 */
2781static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2782 struct xdr_stream *xdr,
2783 struct nfs41_create_session_args *args)
2784{
2785 struct compound_hdr hdr = {
2786 .minorversion = args->client->cl_mvops->minor_version,
2787 };
2788
2789 encode_compound_hdr(xdr, req, &hdr);
2790 encode_create_session(xdr, args, &hdr);
2791 encode_nops(&hdr);
2792}
2793
2794/*
2795 * a DESTROY_SESSION request
2796 */
2797static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2798 struct xdr_stream *xdr,
2799 struct nfs4_session *session)
2800{
2801 struct compound_hdr hdr = {
2802 .minorversion = session->clp->cl_mvops->minor_version,
2803 };
2804
2805 encode_compound_hdr(xdr, req, &hdr);
2806 encode_destroy_session(xdr, session, &hdr);
2807 encode_nops(&hdr);
2808}
2809
2810/*
2811 * a DESTROY_CLIENTID request
2812 */
2813static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2814 struct xdr_stream *xdr,
2815 struct nfs_client *clp)
2816{
2817 struct compound_hdr hdr = {
2818 .minorversion = clp->cl_mvops->minor_version,
2819 };
2820
2821 encode_compound_hdr(xdr, req, &hdr);
2822 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2823 encode_nops(&hdr);
2824}
2825
2826/*
2827 * a SEQUENCE request
2828 */
2829static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2830 struct nfs4_sequence_args *args)
2831{
2832 struct compound_hdr hdr = {
2833 .minorversion = nfs4_xdr_minorversion(args),
2834 };
2835
2836 encode_compound_hdr(xdr, req, &hdr);
2837 encode_sequence(xdr, args, &hdr);
2838 encode_nops(&hdr);
2839}
2840
2841/*
2842 * a GET_LEASE_TIME request
2843 */
2844static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2845 struct xdr_stream *xdr,
2846 struct nfs4_get_lease_time_args *args)
2847{
2848 struct compound_hdr hdr = {
2849 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2850 };
2851 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2852
2853 encode_compound_hdr(xdr, req, &hdr);
2854 encode_sequence(xdr, &args->la_seq_args, &hdr);
2855 encode_putrootfh(xdr, &hdr);
2856 encode_fsinfo(xdr, lease_bitmap, &hdr);
2857 encode_nops(&hdr);
2858}
2859
2860/*
2861 * a RECLAIM_COMPLETE request
2862 */
2863static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2864 struct xdr_stream *xdr,
2865 struct nfs41_reclaim_complete_args *args)
2866{
2867 struct compound_hdr hdr = {
2868 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2869 };
2870
2871 encode_compound_hdr(xdr, req, &hdr);
2872 encode_sequence(xdr, &args->seq_args, &hdr);
2873 encode_reclaim_complete(xdr, args, &hdr);
2874 encode_nops(&hdr);
2875}
2876
2877/*
2878 * Encode GETDEVICEINFO request
2879 */
2880static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2881 struct xdr_stream *xdr,
2882 struct nfs4_getdeviceinfo_args *args)
2883{
2884 struct compound_hdr hdr = {
2885 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2886 };
2887
2888 encode_compound_hdr(xdr, req, &hdr);
2889 encode_sequence(xdr, &args->seq_args, &hdr);
2890 encode_getdeviceinfo(xdr, args, &hdr);
2891
2892 /* set up reply kvec. Subtract notification bitmap max size (2)
2893 * so that notification bitmap is put in xdr_buf tail */
2894 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2895 args->pdev->pages, args->pdev->pgbase,
2896 args->pdev->pglen);
2897
2898 encode_nops(&hdr);
2899}
2900
2901/*
2902 * Encode LAYOUTGET request
2903 */
2904static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2905 struct xdr_stream *xdr,
2906 struct nfs4_layoutget_args *args)
2907{
2908 struct compound_hdr hdr = {
2909 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2910 };
2911
2912 encode_compound_hdr(xdr, req, &hdr);
2913 encode_sequence(xdr, &args->seq_args, &hdr);
2914 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2915 encode_layoutget(xdr, args, &hdr);
2916
2917 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2918 args->layout.pages, 0, args->layout.pglen);
2919
2920 encode_nops(&hdr);
2921}
2922
2923/*
2924 * Encode LAYOUTCOMMIT request
2925 */
2926static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2927 struct xdr_stream *xdr,
2928 struct nfs4_layoutcommit_args *args)
2929{
2930 struct nfs4_layoutcommit_data *data =
2931 container_of(args, struct nfs4_layoutcommit_data, args);
2932 struct compound_hdr hdr = {
2933 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2934 };
2935
2936 encode_compound_hdr(xdr, req, &hdr);
2937 encode_sequence(xdr, &args->seq_args, &hdr);
2938 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2939 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2940 encode_getfattr(xdr, args->bitmask, &hdr);
2941 encode_nops(&hdr);
2942}
2943
2944/*
2945 * Encode LAYOUTRETURN request
2946 */
2947static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2948 struct xdr_stream *xdr,
2949 struct nfs4_layoutreturn_args *args)
2950{
2951 struct compound_hdr hdr = {
2952 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2953 };
2954
2955 encode_compound_hdr(xdr, req, &hdr);
2956 encode_sequence(xdr, &args->seq_args, &hdr);
2957 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2958 encode_layoutreturn(xdr, args, &hdr);
2959 encode_nops(&hdr);
2960}
2961
2962/*
2963 * Encode SECINFO_NO_NAME request
2964 */
2965static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2966 struct xdr_stream *xdr,
2967 struct nfs41_secinfo_no_name_args *args)
2968{
2969 struct compound_hdr hdr = {
2970 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2971 };
2972
2973 encode_compound_hdr(xdr, req, &hdr);
2974 encode_sequence(xdr, &args->seq_args, &hdr);
2975 encode_putrootfh(xdr, &hdr);
2976 encode_secinfo_no_name(xdr, args, &hdr);
2977 encode_nops(&hdr);
2978 return 0;
2979}
2980
2981/*
2982 * Encode TEST_STATEID request
2983 */
2984static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2985 struct xdr_stream *xdr,
2986 struct nfs41_test_stateid_args *args)
2987{
2988 struct compound_hdr hdr = {
2989 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2990 };
2991
2992 encode_compound_hdr(xdr, req, &hdr);
2993 encode_sequence(xdr, &args->seq_args, &hdr);
2994 encode_test_stateid(xdr, args, &hdr);
2995 encode_nops(&hdr);
2996}
2997
2998/*
2999 * Encode FREE_STATEID request
3000 */
3001static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3002 struct xdr_stream *xdr,
3003 struct nfs41_free_stateid_args *args)
3004{
3005 struct compound_hdr hdr = {
3006 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3007 };
3008
3009 encode_compound_hdr(xdr, req, &hdr);
3010 encode_sequence(xdr, &args->seq_args, &hdr);
3011 encode_free_stateid(xdr, args, &hdr);
3012 encode_nops(&hdr);
3013}
3014#endif /* CONFIG_NFS_V4_1 */
3015
3016static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3017{
3018 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3019 "Remaining buffer length is %tu words.\n",
3020 func, xdr->end - xdr->p);
3021}
3022
3023static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3024{
3025 __be32 *p;
3026
3027 p = xdr_inline_decode(xdr, 4);
3028 if (unlikely(!p))
3029 goto out_overflow;
3030 *len = be32_to_cpup(p);
3031 p = xdr_inline_decode(xdr, *len);
3032 if (unlikely(!p))
3033 goto out_overflow;
3034 *string = (char *)p;
3035 return 0;
3036out_overflow:
3037 print_overflow_msg(__func__, xdr);
3038 return -EIO;
3039}
3040
3041static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3042{
3043 __be32 *p;
3044
3045 p = xdr_inline_decode(xdr, 8);
3046 if (unlikely(!p))
3047 goto out_overflow;
3048 hdr->status = be32_to_cpup(p++);
3049 hdr->taglen = be32_to_cpup(p);
3050
3051 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3052 if (unlikely(!p))
3053 goto out_overflow;
3054 hdr->tag = (char *)p;
3055 p += XDR_QUADLEN(hdr->taglen);
3056 hdr->nops = be32_to_cpup(p);
3057 if (unlikely(hdr->nops < 1))
3058 return nfs4_stat_to_errno(hdr->status);
3059 return 0;
3060out_overflow:
3061 print_overflow_msg(__func__, xdr);
3062 return -EIO;
3063}
3064
3065static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3066 int *nfs_retval)
3067{
3068 __be32 *p;
3069 uint32_t opnum;
3070 int32_t nfserr;
3071
3072 p = xdr_inline_decode(xdr, 8);
3073 if (unlikely(!p))
3074 goto out_overflow;
3075 opnum = be32_to_cpup(p++);
3076 if (unlikely(opnum != expected))
3077 goto out_bad_operation;
3078 nfserr = be32_to_cpup(p);
3079 if (nfserr == NFS_OK)
3080 *nfs_retval = 0;
3081 else
3082 *nfs_retval = nfs4_stat_to_errno(nfserr);
3083 return true;
3084out_bad_operation:
3085 dprintk("nfs: Server returned operation"
3086 " %d but we issued a request for %d\n",
3087 opnum, expected);
3088 *nfs_retval = -EREMOTEIO;
3089 return false;
3090out_overflow:
3091 print_overflow_msg(__func__, xdr);
3092 *nfs_retval = -EIO;
3093 return false;
3094}
3095
3096static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3097{
3098 int retval;
3099
3100 __decode_op_hdr(xdr, expected, &retval);
3101 return retval;
3102}
3103
3104/* Dummy routine */
3105static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3106{
3107 __be32 *p;
3108 unsigned int strlen;
3109 char *str;
3110
3111 p = xdr_inline_decode(xdr, 12);
3112 if (likely(p))
3113 return decode_opaque_inline(xdr, &strlen, &str);
3114 print_overflow_msg(__func__, xdr);
3115 return -EIO;
3116}
3117
3118static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3119{
3120 uint32_t bmlen;
3121 __be32 *p;
3122
3123 p = xdr_inline_decode(xdr, 4);
3124 if (unlikely(!p))
3125 goto out_overflow;
3126 bmlen = be32_to_cpup(p);
3127
3128 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3129 p = xdr_inline_decode(xdr, (bmlen << 2));
3130 if (unlikely(!p))
3131 goto out_overflow;
3132 if (bmlen > 0) {
3133 bitmap[0] = be32_to_cpup(p++);
3134 if (bmlen > 1) {
3135 bitmap[1] = be32_to_cpup(p++);
3136 if (bmlen > 2)
3137 bitmap[2] = be32_to_cpup(p);
3138 }
3139 }
3140 return 0;
3141out_overflow:
3142 print_overflow_msg(__func__, xdr);
3143 return -EIO;
3144}
3145
3146static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3147{
3148 __be32 *p;
3149
3150 p = xdr_inline_decode(xdr, 4);
3151 if (unlikely(!p))
3152 goto out_overflow;
3153 *attrlen = be32_to_cpup(p);
3154 *savep = xdr_stream_pos(xdr);
3155 return 0;
3156out_overflow:
3157 print_overflow_msg(__func__, xdr);
3158 return -EIO;
3159}
3160
3161static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3162{
3163 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3164 int ret;
3165 ret = decode_attr_bitmap(xdr, bitmask);
3166 if (unlikely(ret < 0))
3167 return ret;
3168 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3169 } else
3170 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3171 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3172 bitmask[0], bitmask[1], bitmask[2]);
3173 return 0;
3174}
3175
3176static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3177{
3178 __be32 *p;
3179 int ret = 0;
3180
3181 *type = 0;
3182 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3183 return -EIO;
3184 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3185 p = xdr_inline_decode(xdr, 4);
3186 if (unlikely(!p))
3187 goto out_overflow;
3188 *type = be32_to_cpup(p);
3189 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3190 dprintk("%s: bad type %d\n", __func__, *type);
3191 return -EIO;
3192 }
3193 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3194 ret = NFS_ATTR_FATTR_TYPE;
3195 }
3196 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3197 return ret;
3198out_overflow:
3199 print_overflow_msg(__func__, xdr);
3200 return -EIO;
3201}
3202
3203static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3204 uint32_t *bitmap, uint32_t *type)
3205{
3206 __be32 *p;
3207
3208 *type = 0;
3209 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3210 return -EIO;
3211 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3212 p = xdr_inline_decode(xdr, 4);
3213 if (unlikely(!p))
3214 goto out_overflow;
3215 *type = be32_to_cpup(p);
3216 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3217 }
3218 dprintk("%s: expire type=0x%x\n", __func__, *type);
3219 return 0;
3220out_overflow:
3221 print_overflow_msg(__func__, xdr);
3222 return -EIO;
3223}
3224
3225static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3226{
3227 __be32 *p;
3228 int ret = 0;
3229
3230 *change = 0;
3231 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3232 return -EIO;
3233 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3234 p = xdr_inline_decode(xdr, 8);
3235 if (unlikely(!p))
3236 goto out_overflow;
3237 xdr_decode_hyper(p, change);
3238 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3239 ret = NFS_ATTR_FATTR_CHANGE;
3240 }
3241 dprintk("%s: change attribute=%Lu\n", __func__,
3242 (unsigned long long)*change);
3243 return ret;
3244out_overflow:
3245 print_overflow_msg(__func__, xdr);
3246 return -EIO;
3247}
3248
3249static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3250{
3251 __be32 *p;
3252 int ret = 0;
3253
3254 *size = 0;
3255 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3256 return -EIO;
3257 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3258 p = xdr_inline_decode(xdr, 8);
3259 if (unlikely(!p))
3260 goto out_overflow;
3261 xdr_decode_hyper(p, size);
3262 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3263 ret = NFS_ATTR_FATTR_SIZE;
3264 }
3265 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3266 return ret;
3267out_overflow:
3268 print_overflow_msg(__func__, xdr);
3269 return -EIO;
3270}
3271
3272static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3273{
3274 __be32 *p;
3275
3276 *res = 0;
3277 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3278 return -EIO;
3279 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3280 p = xdr_inline_decode(xdr, 4);
3281 if (unlikely(!p))
3282 goto out_overflow;
3283 *res = be32_to_cpup(p);
3284 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3285 }
3286 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3287 return 0;
3288out_overflow:
3289 print_overflow_msg(__func__, xdr);
3290 return -EIO;
3291}
3292
3293static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3294{
3295 __be32 *p;
3296
3297 *res = 0;
3298 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3299 return -EIO;
3300 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3301 p = xdr_inline_decode(xdr, 4);
3302 if (unlikely(!p))
3303 goto out_overflow;
3304 *res = be32_to_cpup(p);
3305 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3306 }
3307 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3308 return 0;
3309out_overflow:
3310 print_overflow_msg(__func__, xdr);
3311 return -EIO;
3312}
3313
3314static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3315{
3316 __be32 *p;
3317 int ret = 0;
3318
3319 fsid->major = 0;
3320 fsid->minor = 0;
3321 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3322 return -EIO;
3323 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3324 p = xdr_inline_decode(xdr, 16);
3325 if (unlikely(!p))
3326 goto out_overflow;
3327 p = xdr_decode_hyper(p, &fsid->major);
3328 xdr_decode_hyper(p, &fsid->minor);
3329 bitmap[0] &= ~FATTR4_WORD0_FSID;
3330 ret = NFS_ATTR_FATTR_FSID;
3331 }
3332 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3333 (unsigned long long)fsid->major,
3334 (unsigned long long)fsid->minor);
3335 return ret;
3336out_overflow:
3337 print_overflow_msg(__func__, xdr);
3338 return -EIO;
3339}
3340
3341static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3342{
3343 __be32 *p;
3344
3345 *res = 60;
3346 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3347 return -EIO;
3348 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3349 p = xdr_inline_decode(xdr, 4);
3350 if (unlikely(!p))
3351 goto out_overflow;
3352 *res = be32_to_cpup(p);
3353 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3354 }
3355 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3356 return 0;
3357out_overflow:
3358 print_overflow_msg(__func__, xdr);
3359 return -EIO;
3360}
3361
3362static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3363{
3364 __be32 *p;
3365
3366 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3367 return -EIO;
3368 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3369 p = xdr_inline_decode(xdr, 4);
3370 if (unlikely(!p))
3371 goto out_overflow;
3372 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3373 *res = -be32_to_cpup(p);
3374 }
3375 return 0;
3376out_overflow:
3377 print_overflow_msg(__func__, xdr);
3378 return -EIO;
3379}
3380
3381static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3382 uint32_t *bitmap, uint32_t *bitmask)
3383{
3384 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3385 int ret;
3386 ret = decode_attr_bitmap(xdr, bitmask);
3387 if (unlikely(ret < 0))
3388 return ret;
3389 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3390 } else
3391 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3392 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3393 bitmask[0], bitmask[1], bitmask[2]);
3394 return 0;
3395}
3396
3397static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3398{
3399 __be32 *p;
3400 int len;
3401
3402 if (fh != NULL)
3403 memset(fh, 0, sizeof(*fh));
3404
3405 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3406 return -EIO;
3407 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3408 p = xdr_inline_decode(xdr, 4);
3409 if (unlikely(!p))
3410 goto out_overflow;
3411 len = be32_to_cpup(p);
3412 if (len > NFS4_FHSIZE)
3413 return -EIO;
3414 p = xdr_inline_decode(xdr, len);
3415 if (unlikely(!p))
3416 goto out_overflow;
3417 if (fh != NULL) {
3418 memcpy(fh->data, p, len);
3419 fh->size = len;
3420 }
3421 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3422 }
3423 return 0;
3424out_overflow:
3425 print_overflow_msg(__func__, xdr);
3426 return -EIO;
3427}
3428
3429static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3430{
3431 __be32 *p;
3432
3433 *res = 0;
3434 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3435 return -EIO;
3436 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3437 p = xdr_inline_decode(xdr, 4);
3438 if (unlikely(!p))
3439 goto out_overflow;
3440 *res = be32_to_cpup(p);
3441 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3442 }
3443 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3444 return 0;
3445out_overflow:
3446 print_overflow_msg(__func__, xdr);
3447 return -EIO;
3448}
3449
3450static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3451{
3452 __be32 *p;
3453 int ret = 0;
3454
3455 *fileid = 0;
3456 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3457 return -EIO;
3458 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3459 p = xdr_inline_decode(xdr, 8);
3460 if (unlikely(!p))
3461 goto out_overflow;
3462 xdr_decode_hyper(p, fileid);
3463 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3464 ret = NFS_ATTR_FATTR_FILEID;
3465 }
3466 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3467 return ret;
3468out_overflow:
3469 print_overflow_msg(__func__, xdr);
3470 return -EIO;
3471}
3472
3473static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3474{
3475 __be32 *p;
3476 int ret = 0;
3477
3478 *fileid = 0;
3479 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3480 return -EIO;
3481 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3482 p = xdr_inline_decode(xdr, 8);
3483 if (unlikely(!p))
3484 goto out_overflow;
3485 xdr_decode_hyper(p, fileid);
3486 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3487 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3488 }
3489 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3490 return ret;
3491out_overflow:
3492 print_overflow_msg(__func__, xdr);
3493 return -EIO;
3494}
3495
3496static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3497{
3498 __be32 *p;
3499 int status = 0;
3500
3501 *res = 0;
3502 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3503 return -EIO;
3504 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3505 p = xdr_inline_decode(xdr, 8);
3506 if (unlikely(!p))
3507 goto out_overflow;
3508 xdr_decode_hyper(p, res);
3509 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3510 }
3511 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3512 return status;
3513out_overflow:
3514 print_overflow_msg(__func__, xdr);
3515 return -EIO;
3516}
3517
3518static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3519{
3520 __be32 *p;
3521 int status = 0;
3522
3523 *res = 0;
3524 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3525 return -EIO;
3526 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3527 p = xdr_inline_decode(xdr, 8);
3528 if (unlikely(!p))
3529 goto out_overflow;
3530 xdr_decode_hyper(p, res);
3531 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3532 }
3533 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3534 return status;
3535out_overflow:
3536 print_overflow_msg(__func__, xdr);
3537 return -EIO;
3538}
3539
3540static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3541{
3542 __be32 *p;
3543 int status = 0;
3544
3545 *res = 0;
3546 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3547 return -EIO;
3548 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3549 p = xdr_inline_decode(xdr, 8);
3550 if (unlikely(!p))
3551 goto out_overflow;
3552 xdr_decode_hyper(p, res);
3553 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3554 }
3555 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3556 return status;
3557out_overflow:
3558 print_overflow_msg(__func__, xdr);
3559 return -EIO;
3560}
3561
3562static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3563{
3564 u32 n;
3565 __be32 *p;
3566 int status = 0;
3567
3568 p = xdr_inline_decode(xdr, 4);
3569 if (unlikely(!p))
3570 goto out_overflow;
3571 n = be32_to_cpup(p);
3572 if (n == 0)
3573 goto root_path;
3574 dprintk("pathname4: ");
3575 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3576 dprintk("cannot parse %d components in path\n", n);
3577 goto out_eio;
3578 }
3579 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3580 struct nfs4_string *component = &path->components[path->ncomponents];
3581 status = decode_opaque_inline(xdr, &component->len, &component->data);
3582 if (unlikely(status != 0))
3583 goto out_eio;
3584 ifdebug (XDR)
3585 pr_cont("%s%.*s ",
3586 (path->ncomponents != n ? "/ " : ""),
3587 component->len, component->data);
3588 }
3589out:
3590 return status;
3591root_path:
3592/* a root pathname is sent as a zero component4 */
3593 path->ncomponents = 1;
3594 path->components[0].len=0;
3595 path->components[0].data=NULL;
3596 dprintk("pathname4: /\n");
3597 goto out;
3598out_eio:
3599 dprintk(" status %d", status);
3600 status = -EIO;
3601 goto out;
3602out_overflow:
3603 print_overflow_msg(__func__, xdr);
3604 return -EIO;
3605}
3606
3607static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3608{
3609 int n;
3610 __be32 *p;
3611 int status = -EIO;
3612
3613 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3614 goto out;
3615 status = 0;
3616 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3617 goto out;
3618 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3619 status = -EIO;
3620 /* Ignore borken servers that return unrequested attrs */
3621 if (unlikely(res == NULL))
3622 goto out;
3623 dprintk("%s: fsroot:\n", __func__);
3624 status = decode_pathname(xdr, &res->fs_path);
3625 if (unlikely(status != 0))
3626 goto out;
3627 p = xdr_inline_decode(xdr, 4);
3628 if (unlikely(!p))
3629 goto out_overflow;
3630 n = be32_to_cpup(p);
3631 if (n <= 0)
3632 goto out_eio;
3633 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3634 u32 m;
3635 struct nfs4_fs_location *loc;
3636
3637 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3638 break;
3639 loc = &res->locations[res->nlocations];
3640 p = xdr_inline_decode(xdr, 4);
3641 if (unlikely(!p))
3642 goto out_overflow;
3643 m = be32_to_cpup(p);
3644
3645 dprintk("%s: servers:\n", __func__);
3646 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3647 struct nfs4_string *server;
3648
3649 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3650 unsigned int i;
3651 dprintk("%s: using first %u of %u servers "
3652 "returned for location %u\n",
3653 __func__,
3654 NFS4_FS_LOCATION_MAXSERVERS,
3655 m, res->nlocations);
3656 for (i = loc->nservers; i < m; i++) {
3657 unsigned int len;
3658 char *data;
3659 status = decode_opaque_inline(xdr, &len, &data);
3660 if (unlikely(status != 0))
3661 goto out_eio;
3662 }
3663 break;
3664 }
3665 server = &loc->servers[loc->nservers];
3666 status = decode_opaque_inline(xdr, &server->len, &server->data);
3667 if (unlikely(status != 0))
3668 goto out_eio;
3669 dprintk("%s ", server->data);
3670 }
3671 status = decode_pathname(xdr, &loc->rootpath);
3672 if (unlikely(status != 0))
3673 goto out_eio;
3674 }
3675 if (res->nlocations != 0)
3676 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3677out:
3678 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3679 return status;
3680out_overflow:
3681 print_overflow_msg(__func__, xdr);
3682out_eio:
3683 status = -EIO;
3684 goto out;
3685}
3686
3687static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3688{
3689 __be32 *p;
3690 int status = 0;
3691
3692 *res = 0;
3693 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3694 return -EIO;
3695 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3696 p = xdr_inline_decode(xdr, 8);
3697 if (unlikely(!p))
3698 goto out_overflow;
3699 xdr_decode_hyper(p, res);
3700 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3701 }
3702 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3703 return status;
3704out_overflow:
3705 print_overflow_msg(__func__, xdr);
3706 return -EIO;
3707}
3708
3709static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3710{
3711 __be32 *p;
3712 int status = 0;
3713
3714 *maxlink = 1;
3715 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3716 return -EIO;
3717 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3718 p = xdr_inline_decode(xdr, 4);
3719 if (unlikely(!p))
3720 goto out_overflow;
3721 *maxlink = be32_to_cpup(p);
3722 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3723 }
3724 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3725 return status;
3726out_overflow:
3727 print_overflow_msg(__func__, xdr);
3728 return -EIO;
3729}
3730
3731static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3732{
3733 __be32 *p;
3734 int status = 0;
3735
3736 *maxname = 1024;
3737 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3738 return -EIO;
3739 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3740 p = xdr_inline_decode(xdr, 4);
3741 if (unlikely(!p))
3742 goto out_overflow;
3743 *maxname = be32_to_cpup(p);
3744 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3745 }
3746 dprintk("%s: maxname=%u\n", __func__, *maxname);
3747 return status;
3748out_overflow:
3749 print_overflow_msg(__func__, xdr);
3750 return -EIO;
3751}
3752
3753static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3754{
3755 __be32 *p;
3756 int status = 0;
3757
3758 *res = 1024;
3759 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3760 return -EIO;
3761 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3762 uint64_t maxread;
3763 p = xdr_inline_decode(xdr, 8);
3764 if (unlikely(!p))
3765 goto out_overflow;
3766 xdr_decode_hyper(p, &maxread);
3767 if (maxread > 0x7FFFFFFF)
3768 maxread = 0x7FFFFFFF;
3769 *res = (uint32_t)maxread;
3770 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3771 }
3772 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3773 return status;
3774out_overflow:
3775 print_overflow_msg(__func__, xdr);
3776 return -EIO;
3777}
3778
3779static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3780{
3781 __be32 *p;
3782 int status = 0;
3783
3784 *res = 1024;
3785 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3786 return -EIO;
3787 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3788 uint64_t maxwrite;
3789 p = xdr_inline_decode(xdr, 8);
3790 if (unlikely(!p))
3791 goto out_overflow;
3792 xdr_decode_hyper(p, &maxwrite);
3793 if (maxwrite > 0x7FFFFFFF)
3794 maxwrite = 0x7FFFFFFF;
3795 *res = (uint32_t)maxwrite;
3796 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3797 }
3798 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3799 return status;
3800out_overflow:
3801 print_overflow_msg(__func__, xdr);
3802 return -EIO;
3803}
3804
3805static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3806{
3807 uint32_t tmp;
3808 __be32 *p;
3809 int ret = 0;
3810
3811 *mode = 0;
3812 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3813 return -EIO;
3814 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3815 p = xdr_inline_decode(xdr, 4);
3816 if (unlikely(!p))
3817 goto out_overflow;
3818 tmp = be32_to_cpup(p);
3819 *mode = tmp & ~S_IFMT;
3820 bitmap[1] &= ~FATTR4_WORD1_MODE;
3821 ret = NFS_ATTR_FATTR_MODE;
3822 }
3823 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3824 return ret;
3825out_overflow:
3826 print_overflow_msg(__func__, xdr);
3827 return -EIO;
3828}
3829
3830static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3831{
3832 __be32 *p;
3833 int ret = 0;
3834
3835 *nlink = 1;
3836 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3837 return -EIO;
3838 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3839 p = xdr_inline_decode(xdr, 4);
3840 if (unlikely(!p))
3841 goto out_overflow;
3842 *nlink = be32_to_cpup(p);
3843 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3844 ret = NFS_ATTR_FATTR_NLINK;
3845 }
3846 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3847 return ret;
3848out_overflow:
3849 print_overflow_msg(__func__, xdr);
3850 return -EIO;
3851}
3852
3853static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3854 const struct nfs_server *server, kuid_t *uid,
3855 struct nfs4_string *owner_name)
3856{
3857 uint32_t len;
3858 __be32 *p;
3859 int ret = 0;
3860
3861 *uid = make_kuid(&init_user_ns, -2);
3862 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3863 return -EIO;
3864 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3865 p = xdr_inline_decode(xdr, 4);
3866 if (unlikely(!p))
3867 goto out_overflow;
3868 len = be32_to_cpup(p);
3869 p = xdr_inline_decode(xdr, len);
3870 if (unlikely(!p))
3871 goto out_overflow;
3872 if (owner_name != NULL) {
3873 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3874 if (owner_name->data != NULL) {
3875 owner_name->len = len;
3876 ret = NFS_ATTR_FATTR_OWNER_NAME;
3877 }
3878 } else if (len < XDR_MAX_NETOBJ) {
3879 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3880 ret = NFS_ATTR_FATTR_OWNER;
3881 else
3882 dprintk("%s: nfs_map_name_to_uid failed!\n",
3883 __func__);
3884 } else
3885 dprintk("%s: name too long (%u)!\n",
3886 __func__, len);
3887 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3888 }
3889 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3890 return ret;
3891out_overflow:
3892 print_overflow_msg(__func__, xdr);
3893 return -EIO;
3894}
3895
3896static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3897 const struct nfs_server *server, kgid_t *gid,
3898 struct nfs4_string *group_name)
3899{
3900 uint32_t len;
3901 __be32 *p;
3902 int ret = 0;
3903
3904 *gid = make_kgid(&init_user_ns, -2);
3905 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3906 return -EIO;
3907 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3908 p = xdr_inline_decode(xdr, 4);
3909 if (unlikely(!p))
3910 goto out_overflow;
3911 len = be32_to_cpup(p);
3912 p = xdr_inline_decode(xdr, len);
3913 if (unlikely(!p))
3914 goto out_overflow;
3915 if (group_name != NULL) {
3916 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3917 if (group_name->data != NULL) {
3918 group_name->len = len;
3919 ret = NFS_ATTR_FATTR_GROUP_NAME;
3920 }
3921 } else if (len < XDR_MAX_NETOBJ) {
3922 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3923 ret = NFS_ATTR_FATTR_GROUP;
3924 else
3925 dprintk("%s: nfs_map_group_to_gid failed!\n",
3926 __func__);
3927 } else
3928 dprintk("%s: name too long (%u)!\n",
3929 __func__, len);
3930 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3931 }
3932 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3933 return ret;
3934out_overflow:
3935 print_overflow_msg(__func__, xdr);
3936 return -EIO;
3937}
3938
3939static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3940{
3941 uint32_t major = 0, minor = 0;
3942 __be32 *p;
3943 int ret = 0;
3944
3945 *rdev = MKDEV(0,0);
3946 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3947 return -EIO;
3948 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3949 dev_t tmp;
3950
3951 p = xdr_inline_decode(xdr, 8);
3952 if (unlikely(!p))
3953 goto out_overflow;
3954 major = be32_to_cpup(p++);
3955 minor = be32_to_cpup(p);
3956 tmp = MKDEV(major, minor);
3957 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3958 *rdev = tmp;
3959 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3960 ret = NFS_ATTR_FATTR_RDEV;
3961 }
3962 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3963 return ret;
3964out_overflow:
3965 print_overflow_msg(__func__, xdr);
3966 return -EIO;
3967}
3968
3969static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3970{
3971 __be32 *p;
3972 int status = 0;
3973
3974 *res = 0;
3975 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3976 return -EIO;
3977 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3978 p = xdr_inline_decode(xdr, 8);
3979 if (unlikely(!p))
3980 goto out_overflow;
3981 xdr_decode_hyper(p, res);
3982 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3983 }
3984 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3985 return status;
3986out_overflow:
3987 print_overflow_msg(__func__, xdr);
3988 return -EIO;
3989}
3990
3991static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3992{
3993 __be32 *p;
3994 int status = 0;
3995
3996 *res = 0;
3997 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3998 return -EIO;
3999 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4000 p = xdr_inline_decode(xdr, 8);
4001 if (unlikely(!p))
4002 goto out_overflow;
4003 xdr_decode_hyper(p, res);
4004 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4005 }
4006 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4007 return status;
4008out_overflow:
4009 print_overflow_msg(__func__, xdr);
4010 return -EIO;
4011}
4012
4013static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4014{
4015 __be32 *p;
4016 int status = 0;
4017
4018 *res = 0;
4019 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4020 return -EIO;
4021 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4022 p = xdr_inline_decode(xdr, 8);
4023 if (unlikely(!p))
4024 goto out_overflow;
4025 xdr_decode_hyper(p, res);
4026 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4027 }
4028 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4029 return status;
4030out_overflow:
4031 print_overflow_msg(__func__, xdr);
4032 return -EIO;
4033}
4034
4035static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4036{
4037 __be32 *p;
4038 int ret = 0;
4039
4040 *used = 0;
4041 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4042 return -EIO;
4043 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4044 p = xdr_inline_decode(xdr, 8);
4045 if (unlikely(!p))
4046 goto out_overflow;
4047 xdr_decode_hyper(p, used);
4048 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4049 ret = NFS_ATTR_FATTR_SPACE_USED;
4050 }
4051 dprintk("%s: space used=%Lu\n", __func__,
4052 (unsigned long long)*used);
4053 return ret;
4054out_overflow:
4055 print_overflow_msg(__func__, xdr);
4056 return -EIO;
4057}
4058
4059static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4060{
4061 __be32 *p;
4062 uint64_t sec;
4063 uint32_t nsec;
4064
4065 p = xdr_inline_decode(xdr, 12);
4066 if (unlikely(!p))
4067 goto out_overflow;
4068 p = xdr_decode_hyper(p, &sec);
4069 nsec = be32_to_cpup(p);
4070 time->tv_sec = (time_t)sec;
4071 time->tv_nsec = (long)nsec;
4072 return 0;
4073out_overflow:
4074 print_overflow_msg(__func__, xdr);
4075 return -EIO;
4076}
4077
4078static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4079{
4080 int status = 0;
4081
4082 time->tv_sec = 0;
4083 time->tv_nsec = 0;
4084 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4085 return -EIO;
4086 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4087 status = decode_attr_time(xdr, time);
4088 if (status == 0)
4089 status = NFS_ATTR_FATTR_ATIME;
4090 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4091 }
4092 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4093 return status;
4094}
4095
4096static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4097{
4098 int status = 0;
4099
4100 time->tv_sec = 0;
4101 time->tv_nsec = 0;
4102 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4103 return -EIO;
4104 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4105 status = decode_attr_time(xdr, time);
4106 if (status == 0)
4107 status = NFS_ATTR_FATTR_CTIME;
4108 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4109 }
4110 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4111 return status;
4112}
4113
4114static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4115 struct timespec *time)
4116{
4117 int status = 0;
4118
4119 time->tv_sec = 0;
4120 time->tv_nsec = 0;
4121 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4122 return -EIO;
4123 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4124 status = decode_attr_time(xdr, time);
4125 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4126 }
4127 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4128 (long)time->tv_nsec);
4129 return status;
4130}
4131
4132static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4133 struct nfs4_label *label)
4134{
4135 uint32_t pi = 0;
4136 uint32_t lfs = 0;
4137 __u32 len;
4138 __be32 *p;
4139 int status = 0;
4140
4141 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4142 return -EIO;
4143 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4144 p = xdr_inline_decode(xdr, 4);
4145 if (unlikely(!p))
4146 goto out_overflow;
4147 lfs = be32_to_cpup(p++);
4148 p = xdr_inline_decode(xdr, 4);
4149 if (unlikely(!p))
4150 goto out_overflow;
4151 pi = be32_to_cpup(p++);
4152 p = xdr_inline_decode(xdr, 4);
4153 if (unlikely(!p))
4154 goto out_overflow;
4155 len = be32_to_cpup(p++);
4156 p = xdr_inline_decode(xdr, len);
4157 if (unlikely(!p))
4158 goto out_overflow;
4159 if (len < NFS4_MAXLABELLEN) {
4160 if (label) {
4161 memcpy(label->label, p, len);
4162 label->len = len;
4163 label->pi = pi;
4164 label->lfs = lfs;
4165 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4166 }
4167 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4168 } else
4169 printk(KERN_WARNING "%s: label too long (%u)!\n",
4170 __func__, len);
4171 }
4172 if (label && label->label)
4173 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4174 (char *)label->label, label->len, label->pi, label->lfs);
4175 return status;
4176
4177out_overflow:
4178 print_overflow_msg(__func__, xdr);
4179 return -EIO;
4180}
4181
4182static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4183{
4184 int status = 0;
4185
4186 time->tv_sec = 0;
4187 time->tv_nsec = 0;
4188 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4189 return -EIO;
4190 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4191 status = decode_attr_time(xdr, time);
4192 if (status == 0)
4193 status = NFS_ATTR_FATTR_MTIME;
4194 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4195 }
4196 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4197 return status;
4198}
4199
4200static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4201{
4202 unsigned int attrwords = XDR_QUADLEN(attrlen);
4203 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4204
4205 if (unlikely(attrwords != nwords)) {
4206 dprintk("%s: server returned incorrect attribute length: "
4207 "%u %c %u\n",
4208 __func__,
4209 attrwords << 2,
4210 (attrwords < nwords) ? '<' : '>',
4211 nwords << 2);
4212 return -EIO;
4213 }
4214 return 0;
4215}
4216
4217static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4218{
4219 __be32 *p;
4220
4221 p = xdr_inline_decode(xdr, 20);
4222 if (unlikely(!p))
4223 goto out_overflow;
4224 cinfo->atomic = be32_to_cpup(p++);
4225 p = xdr_decode_hyper(p, &cinfo->before);
4226 xdr_decode_hyper(p, &cinfo->after);
4227 return 0;
4228out_overflow:
4229 print_overflow_msg(__func__, xdr);
4230 return -EIO;
4231}
4232
4233static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4234{
4235 __be32 *p;
4236 uint32_t supp, acc;
4237 int status;
4238
4239 status = decode_op_hdr(xdr, OP_ACCESS);
4240 if (status)
4241 return status;
4242 p = xdr_inline_decode(xdr, 8);
4243 if (unlikely(!p))
4244 goto out_overflow;
4245 supp = be32_to_cpup(p++);
4246 acc = be32_to_cpup(p);
4247 *supported = supp;
4248 *access = acc;
4249 return 0;
4250out_overflow:
4251 print_overflow_msg(__func__, xdr);
4252 return -EIO;
4253}
4254
4255static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4256{
4257 __be32 *p;
4258
4259 p = xdr_inline_decode(xdr, len);
4260 if (likely(p)) {
4261 memcpy(buf, p, len);
4262 return 0;
4263 }
4264 print_overflow_msg(__func__, xdr);
4265 return -EIO;
4266}
4267
4268static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4269{
4270 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4271}
4272
4273static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4274{
4275 int status;
4276
4277 status = decode_op_hdr(xdr, OP_CLOSE);
4278 if (status != -EIO)
4279 nfs_increment_open_seqid(status, res->seqid);
4280 if (!status)
4281 status = decode_stateid(xdr, &res->stateid);
4282 return status;
4283}
4284
4285static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4286{
4287 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4288}
4289
4290static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4291{
4292 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4293}
4294
4295static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4296{
4297 int status;
4298
4299 status = decode_op_hdr(xdr, OP_COMMIT);
4300 if (!status)
4301 status = decode_write_verifier(xdr, &res->verf->verifier);
4302 return status;
4303}
4304
4305static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4306{
4307 __be32 *p;
4308 uint32_t bmlen;
4309 int status;
4310
4311 status = decode_op_hdr(xdr, OP_CREATE);
4312 if (status)
4313 return status;
4314 if ((status = decode_change_info(xdr, cinfo)))
4315 return status;
4316 p = xdr_inline_decode(xdr, 4);
4317 if (unlikely(!p))
4318 goto out_overflow;
4319 bmlen = be32_to_cpup(p);
4320 p = xdr_inline_decode(xdr, bmlen << 2);
4321 if (likely(p))
4322 return 0;
4323out_overflow:
4324 print_overflow_msg(__func__, xdr);
4325 return -EIO;
4326}
4327
4328static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4329{
4330 unsigned int savep;
4331 uint32_t attrlen, bitmap[3] = {0};
4332 int status;
4333
4334 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4335 goto xdr_error;
4336 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4337 goto xdr_error;
4338 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4339 goto xdr_error;
4340 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4341 goto xdr_error;
4342 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4343 &res->fh_expire_type)) != 0)
4344 goto xdr_error;
4345 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4346 goto xdr_error;
4347 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4348 goto xdr_error;
4349 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4350 goto xdr_error;
4351 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4352 res->exclcreat_bitmask)) != 0)
4353 goto xdr_error;
4354 status = verify_attr_len(xdr, savep, attrlen);
4355xdr_error:
4356 dprintk("%s: xdr returned %d!\n", __func__, -status);
4357 return status;
4358}
4359
4360static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4361{
4362 unsigned int savep;
4363 uint32_t attrlen, bitmap[3] = {0};
4364 int status;
4365
4366 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4367 goto xdr_error;
4368 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4369 goto xdr_error;
4370 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4371 goto xdr_error;
4372
4373 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4374 goto xdr_error;
4375 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4376 goto xdr_error;
4377 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4378 goto xdr_error;
4379
4380 status = -EIO;
4381 if (unlikely(bitmap[0]))
4382 goto xdr_error;
4383
4384 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4385 goto xdr_error;
4386 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4387 goto xdr_error;
4388 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4389 goto xdr_error;
4390
4391 status = verify_attr_len(xdr, savep, attrlen);
4392xdr_error:
4393 dprintk("%s: xdr returned %d!\n", __func__, -status);
4394 return status;
4395}
4396
4397static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4398{
4399 unsigned int savep;
4400 uint32_t attrlen, bitmap[3] = {0};
4401 int status;
4402
4403 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4404 goto xdr_error;
4405 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4406 goto xdr_error;
4407 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4408 goto xdr_error;
4409
4410 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4411 goto xdr_error;
4412 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4413 goto xdr_error;
4414
4415 status = verify_attr_len(xdr, savep, attrlen);
4416xdr_error:
4417 dprintk("%s: xdr returned %d!\n", __func__, -status);
4418 return status;
4419}
4420
4421static int decode_threshold_hint(struct xdr_stream *xdr,
4422 uint32_t *bitmap,
4423 uint64_t *res,
4424 uint32_t hint_bit)
4425{
4426 __be32 *p;
4427
4428 *res = 0;
4429 if (likely(bitmap[0] & hint_bit)) {
4430 p = xdr_inline_decode(xdr, 8);
4431 if (unlikely(!p))
4432 goto out_overflow;
4433 xdr_decode_hyper(p, res);
4434 }
4435 return 0;
4436out_overflow:
4437 print_overflow_msg(__func__, xdr);
4438 return -EIO;
4439}
4440
4441static int decode_first_threshold_item4(struct xdr_stream *xdr,
4442 struct nfs4_threshold *res)
4443{
4444 __be32 *p;
4445 unsigned int savep;
4446 uint32_t bitmap[3] = {0,}, attrlen;
4447 int status;
4448
4449 /* layout type */
4450 p = xdr_inline_decode(xdr, 4);
4451 if (unlikely(!p)) {
4452 print_overflow_msg(__func__, xdr);
4453 return -EIO;
4454 }
4455 res->l_type = be32_to_cpup(p);
4456
4457 /* thi_hintset bitmap */
4458 status = decode_attr_bitmap(xdr, bitmap);
4459 if (status < 0)
4460 goto xdr_error;
4461
4462 /* thi_hintlist length */
4463 status = decode_attr_length(xdr, &attrlen, &savep);
4464 if (status < 0)
4465 goto xdr_error;
4466 /* thi_hintlist */
4467 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4468 if (status < 0)
4469 goto xdr_error;
4470 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4471 if (status < 0)
4472 goto xdr_error;
4473 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4474 THRESHOLD_RD_IO);
4475 if (status < 0)
4476 goto xdr_error;
4477 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4478 THRESHOLD_WR_IO);
4479 if (status < 0)
4480 goto xdr_error;
4481
4482 status = verify_attr_len(xdr, savep, attrlen);
4483 res->bm = bitmap[0];
4484
4485 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4486 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4487 res->wr_io_sz);
4488xdr_error:
4489 dprintk("%s ret=%d!\n", __func__, status);
4490 return status;
4491}
4492
4493/*
4494 * Thresholds on pNFS direct I/O vrs MDS I/O
4495 */
4496static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4497 uint32_t *bitmap,
4498 struct nfs4_threshold *res)
4499{
4500 __be32 *p;
4501 int status = 0;
4502 uint32_t num;
4503
4504 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4505 return -EIO;
4506 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4507 /* Did the server return an unrequested attribute? */
4508 if (unlikely(res == NULL))
4509 return -EREMOTEIO;
4510 p = xdr_inline_decode(xdr, 4);
4511 if (unlikely(!p))
4512 goto out_overflow;
4513 num = be32_to_cpup(p);
4514 if (num == 0)
4515 return 0;
4516 if (num > 1)
4517 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4518 "drivers per filesystem not supported\n",
4519 __func__);
4520
4521 status = decode_first_threshold_item4(xdr, res);
4522 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4523 }
4524 return status;
4525out_overflow:
4526 print_overflow_msg(__func__, xdr);
4527 return -EIO;
4528}
4529
4530static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4531 struct nfs_fattr *fattr, struct nfs_fh *fh,
4532 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4533 const struct nfs_server *server)
4534{
4535 int status;
4536 umode_t fmode = 0;
4537 uint32_t type;
4538 int32_t err;
4539
4540 status = decode_attr_type(xdr, bitmap, &type);
4541 if (status < 0)
4542 goto xdr_error;
4543 fattr->mode = 0;
4544 if (status != 0) {
4545 fattr->mode |= nfs_type2fmt[type];
4546 fattr->valid |= status;
4547 }
4548
4549 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4550 if (status < 0)
4551 goto xdr_error;
4552 fattr->valid |= status;
4553
4554 status = decode_attr_size(xdr, bitmap, &fattr->size);
4555 if (status < 0)
4556 goto xdr_error;
4557 fattr->valid |= status;
4558
4559 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4560 if (status < 0)
4561 goto xdr_error;
4562 fattr->valid |= status;
4563
4564 err = 0;
4565 status = decode_attr_error(xdr, bitmap, &err);
4566 if (status < 0)
4567 goto xdr_error;
4568
4569 status = decode_attr_filehandle(xdr, bitmap, fh);
4570 if (status < 0)
4571 goto xdr_error;
4572
4573 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4574 if (status < 0)
4575 goto xdr_error;
4576 fattr->valid |= status;
4577
4578 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4579 if (status < 0)
4580 goto xdr_error;
4581 fattr->valid |= status;
4582
4583 status = -EIO;
4584 if (unlikely(bitmap[0]))
4585 goto xdr_error;
4586
4587 status = decode_attr_mode(xdr, bitmap, &fmode);
4588 if (status < 0)
4589 goto xdr_error;
4590 if (status != 0) {
4591 fattr->mode |= fmode;
4592 fattr->valid |= status;
4593 }
4594
4595 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4596 if (status < 0)
4597 goto xdr_error;
4598 fattr->valid |= status;
4599
4600 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4601 if (status < 0)
4602 goto xdr_error;
4603 fattr->valid |= status;
4604
4605 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4606 if (status < 0)
4607 goto xdr_error;
4608 fattr->valid |= status;
4609
4610 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4611 if (status < 0)
4612 goto xdr_error;
4613 fattr->valid |= status;
4614
4615 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4616 if (status < 0)
4617 goto xdr_error;
4618 fattr->valid |= status;
4619
4620 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4621 if (status < 0)
4622 goto xdr_error;
4623 fattr->valid |= status;
4624
4625 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4626 if (status < 0)
4627 goto xdr_error;
4628 fattr->valid |= status;
4629
4630 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4631 if (status < 0)
4632 goto xdr_error;
4633 fattr->valid |= status;
4634
4635 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4636 if (status < 0)
4637 goto xdr_error;
4638 fattr->valid |= status;
4639
4640 status = -EIO;
4641 if (unlikely(bitmap[1]))
4642 goto xdr_error;
4643
4644 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4645 if (status < 0)
4646 goto xdr_error;
4647
4648 if (label) {
4649 status = decode_attr_security_label(xdr, bitmap, label);
4650 if (status < 0)
4651 goto xdr_error;
4652 fattr->valid |= status;
4653 }
4654
4655xdr_error:
4656 dprintk("%s: xdr returned %d\n", __func__, -status);
4657 return status;
4658}
4659
4660static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4661 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4662 struct nfs4_label *label, const struct nfs_server *server)
4663{
4664 unsigned int savep;
4665 uint32_t attrlen,
4666 bitmap[3] = {0};
4667 int status;
4668
4669 status = decode_op_hdr(xdr, OP_GETATTR);
4670 if (status < 0)
4671 goto xdr_error;
4672
4673 status = decode_attr_bitmap(xdr, bitmap);
4674 if (status < 0)
4675 goto xdr_error;
4676
4677 status = decode_attr_length(xdr, &attrlen, &savep);
4678 if (status < 0)
4679 goto xdr_error;
4680
4681 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4682 label, server);
4683 if (status < 0)
4684 goto xdr_error;
4685
4686 status = verify_attr_len(xdr, savep, attrlen);
4687xdr_error:
4688 dprintk("%s: xdr returned %d\n", __func__, -status);
4689 return status;
4690}
4691
4692static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4693 struct nfs4_label *label, const struct nfs_server *server)
4694{
4695 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4696}
4697
4698static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4699 const struct nfs_server *server)
4700{
4701 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4702}
4703
4704/*
4705 * Decode potentially multiple layout types. Currently we only support
4706 * one layout driver per file system.
4707 */
4708static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4709 uint32_t *layouttype)
4710{
4711 __be32 *p;
4712 int num;
4713
4714 p = xdr_inline_decode(xdr, 4);
4715 if (unlikely(!p))
4716 goto out_overflow;
4717 num = be32_to_cpup(p);
4718
4719 /* pNFS is not supported by the underlying file system */
4720 if (num == 0) {
4721 *layouttype = 0;
4722 return 0;
4723 }
4724 if (num > 1)
4725 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4726 "drivers per filesystem not supported\n", __func__);
4727
4728 /* Decode and set first layout type, move xdr->p past unused types */
4729 p = xdr_inline_decode(xdr, num * 4);
4730 if (unlikely(!p))
4731 goto out_overflow;
4732 *layouttype = be32_to_cpup(p);
4733 return 0;
4734out_overflow:
4735 print_overflow_msg(__func__, xdr);
4736 return -EIO;
4737}
4738
4739/*
4740 * The type of file system exported.
4741 * Note we must ensure that layouttype is set in any non-error case.
4742 */
4743static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4744 uint32_t *layouttype)
4745{
4746 int status = 0;
4747
4748 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4749 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4750 return -EIO;
4751 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4752 status = decode_first_pnfs_layout_type(xdr, layouttype);
4753 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4754 } else
4755 *layouttype = 0;
4756 return status;
4757}
4758
4759/*
4760 * The prefered block size for layout directed io
4761 */
4762static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4763 uint32_t *res)
4764{
4765 __be32 *p;
4766
4767 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4768 *res = 0;
4769 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4770 p = xdr_inline_decode(xdr, 4);
4771 if (unlikely(!p)) {
4772 print_overflow_msg(__func__, xdr);
4773 return -EIO;
4774 }
4775 *res = be32_to_cpup(p);
4776 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4777 }
4778 return 0;
4779}
4780
4781/*
4782 * The granularity of a CLONE operation.
4783 */
4784static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4785 uint32_t *res)
4786{
4787 __be32 *p;
4788
4789 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4790 *res = 0;
4791 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4792 p = xdr_inline_decode(xdr, 4);
4793 if (unlikely(!p)) {
4794 print_overflow_msg(__func__, xdr);
4795 return -EIO;
4796 }
4797 *res = be32_to_cpup(p);
4798 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4799 }
4800 return 0;
4801}
4802
4803static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4804{
4805 unsigned int savep;
4806 uint32_t attrlen, bitmap[3];
4807 int status;
4808
4809 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4810 goto xdr_error;
4811 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4812 goto xdr_error;
4813 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4814 goto xdr_error;
4815
4816 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4817
4818 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4819 goto xdr_error;
4820 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4821 goto xdr_error;
4822 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4823 goto xdr_error;
4824 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4825 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4826 goto xdr_error;
4827 fsinfo->wtpref = fsinfo->wtmax;
4828
4829 status = -EIO;
4830 if (unlikely(bitmap[0]))
4831 goto xdr_error;
4832
4833 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4834 if (status != 0)
4835 goto xdr_error;
4836 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4837 if (status != 0)
4838 goto xdr_error;
4839
4840 status = -EIO;
4841 if (unlikely(bitmap[1]))
4842 goto xdr_error;
4843
4844 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4845 if (status)
4846 goto xdr_error;
4847 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4848 if (status)
4849 goto xdr_error;
4850
4851 status = verify_attr_len(xdr, savep, attrlen);
4852xdr_error:
4853 dprintk("%s: xdr returned %d!\n", __func__, -status);
4854 return status;
4855}
4856
4857static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4858{
4859 __be32 *p;
4860 uint32_t len;
4861 int status;
4862
4863 /* Zero handle first to allow comparisons */
4864 memset(fh, 0, sizeof(*fh));
4865
4866 status = decode_op_hdr(xdr, OP_GETFH);
4867 if (status)
4868 return status;
4869
4870 p = xdr_inline_decode(xdr, 4);
4871 if (unlikely(!p))
4872 goto out_overflow;
4873 len = be32_to_cpup(p);
4874 if (len > NFS4_FHSIZE)
4875 return -EIO;
4876 fh->size = len;
4877 p = xdr_inline_decode(xdr, len);
4878 if (unlikely(!p))
4879 goto out_overflow;
4880 memcpy(fh->data, p, len);
4881 return 0;
4882out_overflow:
4883 print_overflow_msg(__func__, xdr);
4884 return -EIO;
4885}
4886
4887static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4888{
4889 int status;
4890
4891 status = decode_op_hdr(xdr, OP_LINK);
4892 if (status)
4893 return status;
4894 return decode_change_info(xdr, cinfo);
4895}
4896
4897/*
4898 * We create the owner, so we know a proper owner.id length is 4.
4899 */
4900static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4901{
4902 uint64_t offset, length, clientid;
4903 __be32 *p;
4904 uint32_t namelen, type;
4905
4906 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4907 if (unlikely(!p))
4908 goto out_overflow;
4909 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4910 p = xdr_decode_hyper(p, &length);
4911 type = be32_to_cpup(p++); /* 4 byte read */
4912 if (fl != NULL) { /* manipulate file lock */
4913 fl->fl_start = (loff_t)offset;
4914 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4915 if (length == ~(uint64_t)0)
4916 fl->fl_end = OFFSET_MAX;
4917 fl->fl_type = F_WRLCK;
4918 if (type & 1)
4919 fl->fl_type = F_RDLCK;
4920 fl->fl_pid = 0;
4921 }
4922 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4923 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4924 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4925 if (likely(p))
4926 return -NFS4ERR_DENIED;
4927out_overflow:
4928 print_overflow_msg(__func__, xdr);
4929 return -EIO;
4930}
4931
4932static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4933{
4934 int status;
4935
4936 status = decode_op_hdr(xdr, OP_LOCK);
4937 if (status == -EIO)
4938 goto out;
4939 if (status == 0) {
4940 status = decode_stateid(xdr, &res->stateid);
4941 if (unlikely(status))
4942 goto out;
4943 } else if (status == -NFS4ERR_DENIED)
4944 status = decode_lock_denied(xdr, NULL);
4945 if (res->open_seqid != NULL)
4946 nfs_increment_open_seqid(status, res->open_seqid);
4947 nfs_increment_lock_seqid(status, res->lock_seqid);
4948out:
4949 return status;
4950}
4951
4952static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4953{
4954 int status;
4955 status = decode_op_hdr(xdr, OP_LOCKT);
4956 if (status == -NFS4ERR_DENIED)
4957 return decode_lock_denied(xdr, res->denied);
4958 return status;
4959}
4960
4961static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4962{
4963 int status;
4964
4965 status = decode_op_hdr(xdr, OP_LOCKU);
4966 if (status != -EIO)
4967 nfs_increment_lock_seqid(status, res->seqid);
4968 if (status == 0)
4969 status = decode_stateid(xdr, &res->stateid);
4970 return status;
4971}
4972
4973static int decode_release_lockowner(struct xdr_stream *xdr)
4974{
4975 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4976}
4977
4978static int decode_lookup(struct xdr_stream *xdr)
4979{
4980 return decode_op_hdr(xdr, OP_LOOKUP);
4981}
4982
4983/* This is too sick! */
4984static int decode_space_limit(struct xdr_stream *xdr,
4985 unsigned long *pagemod_limit)
4986{
4987 __be32 *p;
4988 uint32_t limit_type, nblocks, blocksize;
4989 u64 maxsize = 0;
4990
4991 p = xdr_inline_decode(xdr, 12);
4992 if (unlikely(!p))
4993 goto out_overflow;
4994 limit_type = be32_to_cpup(p++);
4995 switch (limit_type) {
4996 case NFS4_LIMIT_SIZE:
4997 xdr_decode_hyper(p, &maxsize);
4998 break;
4999 case NFS4_LIMIT_BLOCKS:
5000 nblocks = be32_to_cpup(p++);
5001 blocksize = be32_to_cpup(p);
5002 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5003 }
5004 maxsize >>= PAGE_SHIFT;
5005 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5006 return 0;
5007out_overflow:
5008 print_overflow_msg(__func__, xdr);
5009 return -EIO;
5010}
5011
5012static int decode_rw_delegation(struct xdr_stream *xdr,
5013 uint32_t delegation_type,
5014 struct nfs_openres *res)
5015{
5016 __be32 *p;
5017 int status;
5018
5019 status = decode_stateid(xdr, &res->delegation);
5020 if (unlikely(status))
5021 return status;
5022 p = xdr_inline_decode(xdr, 4);
5023 if (unlikely(!p))
5024 goto out_overflow;
5025 res->do_recall = be32_to_cpup(p);
5026
5027 switch (delegation_type) {
5028 case NFS4_OPEN_DELEGATE_READ:
5029 res->delegation_type = FMODE_READ;
5030 break;
5031 case NFS4_OPEN_DELEGATE_WRITE:
5032 res->delegation_type = FMODE_WRITE|FMODE_READ;
5033 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5034 return -EIO;
5035 }
5036 return decode_ace(xdr, NULL, res->server->nfs_client);
5037out_overflow:
5038 print_overflow_msg(__func__, xdr);
5039 return -EIO;
5040}
5041
5042static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5043{
5044 __be32 *p;
5045 uint32_t why_no_delegation;
5046
5047 p = xdr_inline_decode(xdr, 4);
5048 if (unlikely(!p))
5049 goto out_overflow;
5050 why_no_delegation = be32_to_cpup(p);
5051 switch (why_no_delegation) {
5052 case WND4_CONTENTION:
5053 case WND4_RESOURCE:
5054 xdr_inline_decode(xdr, 4);
5055 /* Ignore for now */
5056 }
5057 return 0;
5058out_overflow:
5059 print_overflow_msg(__func__, xdr);
5060 return -EIO;
5061}
5062
5063static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5064{
5065 __be32 *p;
5066 uint32_t delegation_type;
5067
5068 p = xdr_inline_decode(xdr, 4);
5069 if (unlikely(!p))
5070 goto out_overflow;
5071 delegation_type = be32_to_cpup(p);
5072 res->delegation_type = 0;
5073 switch (delegation_type) {
5074 case NFS4_OPEN_DELEGATE_NONE:
5075 return 0;
5076 case NFS4_OPEN_DELEGATE_READ:
5077 case NFS4_OPEN_DELEGATE_WRITE:
5078 return decode_rw_delegation(xdr, delegation_type, res);
5079 case NFS4_OPEN_DELEGATE_NONE_EXT:
5080 return decode_no_delegation(xdr, res);
5081 }
5082 return -EIO;
5083out_overflow:
5084 print_overflow_msg(__func__, xdr);
5085 return -EIO;
5086}
5087
5088static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5089{
5090 __be32 *p;
5091 uint32_t savewords, bmlen, i;
5092 int status;
5093
5094 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5095 return status;
5096 nfs_increment_open_seqid(status, res->seqid);
5097 if (status)
5098 return status;
5099 status = decode_stateid(xdr, &res->stateid);
5100 if (unlikely(status))
5101 return status;
5102
5103 decode_change_info(xdr, &res->cinfo);
5104
5105 p = xdr_inline_decode(xdr, 8);
5106 if (unlikely(!p))
5107 goto out_overflow;
5108 res->rflags = be32_to_cpup(p++);
5109 bmlen = be32_to_cpup(p);
5110 if (bmlen > 10)
5111 goto xdr_error;
5112
5113 p = xdr_inline_decode(xdr, bmlen << 2);
5114 if (unlikely(!p))
5115 goto out_overflow;
5116 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5117 for (i = 0; i < savewords; ++i)
5118 res->attrset[i] = be32_to_cpup(p++);
5119 for (; i < NFS4_BITMAP_SIZE; i++)
5120 res->attrset[i] = 0;
5121
5122 return decode_delegation(xdr, res);
5123xdr_error:
5124 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5125 return -EIO;
5126out_overflow:
5127 print_overflow_msg(__func__, xdr);
5128 return -EIO;
5129}
5130
5131static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5132{
5133 int status;
5134
5135 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5136 if (status != -EIO)
5137 nfs_increment_open_seqid(status, res->seqid);
5138 if (!status)
5139 status = decode_stateid(xdr, &res->stateid);
5140 return status;
5141}
5142
5143static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5144{
5145 int status;
5146
5147 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5148 if (status != -EIO)
5149 nfs_increment_open_seqid(status, res->seqid);
5150 if (!status)
5151 status = decode_stateid(xdr, &res->stateid);
5152 return status;
5153}
5154
5155static int decode_putfh(struct xdr_stream *xdr)
5156{
5157 return decode_op_hdr(xdr, OP_PUTFH);
5158}
5159
5160static int decode_putrootfh(struct xdr_stream *xdr)
5161{
5162 return decode_op_hdr(xdr, OP_PUTROOTFH);
5163}
5164
5165static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5166 struct nfs_pgio_res *res)
5167{
5168 __be32 *p;
5169 uint32_t count, eof, recvd;
5170 int status;
5171
5172 status = decode_op_hdr(xdr, OP_READ);
5173 if (status)
5174 return status;
5175 p = xdr_inline_decode(xdr, 8);
5176 if (unlikely(!p))
5177 goto out_overflow;
5178 eof = be32_to_cpup(p++);
5179 count = be32_to_cpup(p);
5180 recvd = xdr_read_pages(xdr, count);
5181 if (count > recvd) {
5182 dprintk("NFS: server cheating in read reply: "
5183 "count %u > recvd %u\n", count, recvd);
5184 count = recvd;
5185 eof = 0;
5186 }
5187 res->eof = eof;
5188 res->count = count;
5189 return 0;
5190out_overflow:
5191 print_overflow_msg(__func__, xdr);
5192 return -EIO;
5193}
5194
5195static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5196{
5197 int status;
5198 __be32 verf[2];
5199
5200 status = decode_op_hdr(xdr, OP_READDIR);
5201 if (!status)
5202 status = decode_verifier(xdr, readdir->verifier.data);
5203 if (unlikely(status))
5204 return status;
5205 memcpy(verf, readdir->verifier.data, sizeof(verf));
5206 dprintk("%s: verifier = %08x:%08x\n",
5207 __func__, verf[0], verf[1]);
5208 return xdr_read_pages(xdr, xdr->buf->page_len);
5209}
5210
5211static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5212{
5213 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5214 u32 len, recvd;
5215 __be32 *p;
5216 int status;
5217
5218 status = decode_op_hdr(xdr, OP_READLINK);
5219 if (status)
5220 return status;
5221
5222 /* Convert length of symlink */
5223 p = xdr_inline_decode(xdr, 4);
5224 if (unlikely(!p))
5225 goto out_overflow;
5226 len = be32_to_cpup(p);
5227 if (len >= rcvbuf->page_len || len <= 0) {
5228 dprintk("nfs: server returned giant symlink!\n");
5229 return -ENAMETOOLONG;
5230 }
5231 recvd = xdr_read_pages(xdr, len);
5232 if (recvd < len) {
5233 dprintk("NFS: server cheating in readlink reply: "
5234 "count %u > recvd %u\n", len, recvd);
5235 return -EIO;
5236 }
5237 /*
5238 * The XDR encode routine has set things up so that
5239 * the link text will be copied directly into the
5240 * buffer. We just have to do overflow-checking,
5241 * and and null-terminate the text (the VFS expects
5242 * null-termination).
5243 */
5244 xdr_terminate_string(rcvbuf, len);
5245 return 0;
5246out_overflow:
5247 print_overflow_msg(__func__, xdr);
5248 return -EIO;
5249}
5250
5251static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5252{
5253 int status;
5254
5255 status = decode_op_hdr(xdr, OP_REMOVE);
5256 if (status)
5257 goto out;
5258 status = decode_change_info(xdr, cinfo);
5259out:
5260 return status;
5261}
5262
5263static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5264 struct nfs4_change_info *new_cinfo)
5265{
5266 int status;
5267
5268 status = decode_op_hdr(xdr, OP_RENAME);
5269 if (status)
5270 goto out;
5271 if ((status = decode_change_info(xdr, old_cinfo)))
5272 goto out;
5273 status = decode_change_info(xdr, new_cinfo);
5274out:
5275 return status;
5276}
5277
5278static int decode_renew(struct xdr_stream *xdr)
5279{
5280 return decode_op_hdr(xdr, OP_RENEW);
5281}
5282
5283static int
5284decode_restorefh(struct xdr_stream *xdr)
5285{
5286 return decode_op_hdr(xdr, OP_RESTOREFH);
5287}
5288
5289static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5290 struct nfs_getaclres *res)
5291{
5292 unsigned int savep;
5293 uint32_t attrlen,
5294 bitmap[3] = {0};
5295 int status;
5296 unsigned int pg_offset;
5297
5298 res->acl_len = 0;
5299 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5300 goto out;
5301
5302 xdr_enter_page(xdr, xdr->buf->page_len);
5303
5304 /* Calculate the offset of the page data */
5305 pg_offset = xdr->buf->head[0].iov_len;
5306
5307 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5308 goto out;
5309 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5310 goto out;
5311
5312 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5313 return -EIO;
5314 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5315
5316 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5317 * are stored with the acl data to handle the problem of
5318 * variable length bitmaps.*/
5319 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5320 res->acl_len = attrlen;
5321
5322 /* Check for receive buffer overflow */
5323 if (res->acl_len > (xdr->nwords << 2) ||
5324 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5325 res->acl_flags |= NFS4_ACL_TRUNC;
5326 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5327 attrlen, xdr->nwords << 2);
5328 }
5329 } else
5330 status = -EOPNOTSUPP;
5331
5332out:
5333 return status;
5334}
5335
5336static int
5337decode_savefh(struct xdr_stream *xdr)
5338{
5339 return decode_op_hdr(xdr, OP_SAVEFH);
5340}
5341
5342static int decode_setattr(struct xdr_stream *xdr)
5343{
5344 __be32 *p;
5345 uint32_t bmlen;
5346 int status;
5347
5348 status = decode_op_hdr(xdr, OP_SETATTR);
5349 if (status)
5350 return status;
5351 p = xdr_inline_decode(xdr, 4);
5352 if (unlikely(!p))
5353 goto out_overflow;
5354 bmlen = be32_to_cpup(p);
5355 p = xdr_inline_decode(xdr, bmlen << 2);
5356 if (likely(p))
5357 return 0;
5358out_overflow:
5359 print_overflow_msg(__func__, xdr);
5360 return -EIO;
5361}
5362
5363static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5364{
5365 __be32 *p;
5366 uint32_t opnum;
5367 int32_t nfserr;
5368
5369 p = xdr_inline_decode(xdr, 8);
5370 if (unlikely(!p))
5371 goto out_overflow;
5372 opnum = be32_to_cpup(p++);
5373 if (opnum != OP_SETCLIENTID) {
5374 dprintk("nfs: decode_setclientid: Server returned operation"
5375 " %d\n", opnum);
5376 return -EIO;
5377 }
5378 nfserr = be32_to_cpup(p);
5379 if (nfserr == NFS_OK) {
5380 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5381 if (unlikely(!p))
5382 goto out_overflow;
5383 p = xdr_decode_hyper(p, &res->clientid);
5384 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5385 } else if (nfserr == NFSERR_CLID_INUSE) {
5386 uint32_t len;
5387
5388 /* skip netid string */
5389 p = xdr_inline_decode(xdr, 4);
5390 if (unlikely(!p))
5391 goto out_overflow;
5392 len = be32_to_cpup(p);
5393 p = xdr_inline_decode(xdr, len);
5394 if (unlikely(!p))
5395 goto out_overflow;
5396
5397 /* skip uaddr string */
5398 p = xdr_inline_decode(xdr, 4);
5399 if (unlikely(!p))
5400 goto out_overflow;
5401 len = be32_to_cpup(p);
5402 p = xdr_inline_decode(xdr, len);
5403 if (unlikely(!p))
5404 goto out_overflow;
5405 return -NFSERR_CLID_INUSE;
5406 } else
5407 return nfs4_stat_to_errno(nfserr);
5408
5409 return 0;
5410out_overflow:
5411 print_overflow_msg(__func__, xdr);
5412 return -EIO;
5413}
5414
5415static int decode_setclientid_confirm(struct xdr_stream *xdr)
5416{
5417 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5418}
5419
5420static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5421{
5422 __be32 *p;
5423 int status;
5424
5425 status = decode_op_hdr(xdr, OP_WRITE);
5426 if (status)
5427 return status;
5428
5429 p = xdr_inline_decode(xdr, 8);
5430 if (unlikely(!p))
5431 goto out_overflow;
5432 res->count = be32_to_cpup(p++);
5433 res->verf->committed = be32_to_cpup(p++);
5434 return decode_write_verifier(xdr, &res->verf->verifier);
5435out_overflow:
5436 print_overflow_msg(__func__, xdr);
5437 return -EIO;
5438}
5439
5440static int decode_delegreturn(struct xdr_stream *xdr)
5441{
5442 return decode_op_hdr(xdr, OP_DELEGRETURN);
5443}
5444
5445static int decode_secinfo_gss(struct xdr_stream *xdr,
5446 struct nfs4_secinfo4 *flavor)
5447{
5448 u32 oid_len;
5449 __be32 *p;
5450
5451 p = xdr_inline_decode(xdr, 4);
5452 if (unlikely(!p))
5453 goto out_overflow;
5454 oid_len = be32_to_cpup(p);
5455 if (oid_len > GSS_OID_MAX_LEN)
5456 goto out_err;
5457
5458 p = xdr_inline_decode(xdr, oid_len);
5459 if (unlikely(!p))
5460 goto out_overflow;
5461 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5462 flavor->flavor_info.oid.len = oid_len;
5463
5464 p = xdr_inline_decode(xdr, 8);
5465 if (unlikely(!p))
5466 goto out_overflow;
5467 flavor->flavor_info.qop = be32_to_cpup(p++);
5468 flavor->flavor_info.service = be32_to_cpup(p);
5469
5470 return 0;
5471
5472out_overflow:
5473 print_overflow_msg(__func__, xdr);
5474 return -EIO;
5475out_err:
5476 return -EINVAL;
5477}
5478
5479static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5480{
5481 struct nfs4_secinfo4 *sec_flavor;
5482 unsigned int i, num_flavors;
5483 int status;
5484 __be32 *p;
5485
5486 p = xdr_inline_decode(xdr, 4);
5487 if (unlikely(!p))
5488 goto out_overflow;
5489
5490 res->flavors->num_flavors = 0;
5491 num_flavors = be32_to_cpup(p);
5492
5493 for (i = 0; i < num_flavors; i++) {
5494 sec_flavor = &res->flavors->flavors[i];
5495 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5496 break;
5497
5498 p = xdr_inline_decode(xdr, 4);
5499 if (unlikely(!p))
5500 goto out_overflow;
5501 sec_flavor->flavor = be32_to_cpup(p);
5502
5503 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5504 status = decode_secinfo_gss(xdr, sec_flavor);
5505 if (status)
5506 goto out;
5507 }
5508 res->flavors->num_flavors++;
5509 }
5510
5511 status = 0;
5512out:
5513 return status;
5514out_overflow:
5515 print_overflow_msg(__func__, xdr);
5516 return -EIO;
5517}
5518
5519static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5520{
5521 int status = decode_op_hdr(xdr, OP_SECINFO);
5522 if (status)
5523 return status;
5524 return decode_secinfo_common(xdr, res);
5525}
5526
5527#if defined(CONFIG_NFS_V4_1)
5528static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5529{
5530 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5531 if (status)
5532 return status;
5533 return decode_secinfo_common(xdr, res);
5534}
5535
5536static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5537{
5538 __be32 *p;
5539 uint32_t bitmap_words;
5540 unsigned int i;
5541
5542 p = xdr_inline_decode(xdr, 4);
5543 bitmap_words = be32_to_cpup(p++);
5544 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5545 return -EIO;
5546 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5547 for (i = 0; i < bitmap_words; i++)
5548 op_map->u.words[i] = be32_to_cpup(p++);
5549
5550 return 0;
5551}
5552
5553static int decode_exchange_id(struct xdr_stream *xdr,
5554 struct nfs41_exchange_id_res *res)
5555{
5556 __be32 *p;
5557 uint32_t dummy;
5558 char *dummy_str;
5559 int status;
5560 uint32_t impl_id_count;
5561
5562 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5563 if (status)
5564 return status;
5565
5566 p = xdr_inline_decode(xdr, 8);
5567 if (unlikely(!p))
5568 goto out_overflow;
5569 xdr_decode_hyper(p, &res->clientid);
5570 p = xdr_inline_decode(xdr, 12);
5571 if (unlikely(!p))
5572 goto out_overflow;
5573 res->seqid = be32_to_cpup(p++);
5574 res->flags = be32_to_cpup(p++);
5575
5576 res->state_protect.how = be32_to_cpup(p);
5577 switch (res->state_protect.how) {
5578 case SP4_NONE:
5579 break;
5580 case SP4_MACH_CRED:
5581 status = decode_op_map(xdr, &res->state_protect.enforce);
5582 if (status)
5583 return status;
5584 status = decode_op_map(xdr, &res->state_protect.allow);
5585 if (status)
5586 return status;
5587 break;
5588 default:
5589 WARN_ON_ONCE(1);
5590 return -EIO;
5591 }
5592
5593 /* server_owner4.so_minor_id */
5594 p = xdr_inline_decode(xdr, 8);
5595 if (unlikely(!p))
5596 goto out_overflow;
5597 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5598
5599 /* server_owner4.so_major_id */
5600 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5601 if (unlikely(status))
5602 return status;
5603 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5604 return -EIO;
5605 memcpy(res->server_owner->major_id, dummy_str, dummy);
5606 res->server_owner->major_id_sz = dummy;
5607
5608 /* server_scope4 */
5609 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5610 if (unlikely(status))
5611 return status;
5612 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5613 return -EIO;
5614 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5615 res->server_scope->server_scope_sz = dummy;
5616
5617 /* Implementation Id */
5618 p = xdr_inline_decode(xdr, 4);
5619 if (unlikely(!p))
5620 goto out_overflow;
5621 impl_id_count = be32_to_cpup(p++);
5622
5623 if (impl_id_count) {
5624 /* nii_domain */
5625 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5626 if (unlikely(status))
5627 return status;
5628 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5629 return -EIO;
5630 memcpy(res->impl_id->domain, dummy_str, dummy);
5631
5632 /* nii_name */
5633 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5634 if (unlikely(status))
5635 return status;
5636 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5637 return -EIO;
5638 memcpy(res->impl_id->name, dummy_str, dummy);
5639
5640 /* nii_date */
5641 p = xdr_inline_decode(xdr, 12);
5642 if (unlikely(!p))
5643 goto out_overflow;
5644 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5645 res->impl_id->date.nseconds = be32_to_cpup(p);
5646
5647 /* if there's more than one entry, ignore the rest */
5648 }
5649 return 0;
5650out_overflow:
5651 print_overflow_msg(__func__, xdr);
5652 return -EIO;
5653}
5654
5655static int decode_chan_attrs(struct xdr_stream *xdr,
5656 struct nfs4_channel_attrs *attrs)
5657{
5658 __be32 *p;
5659 u32 nr_attrs, val;
5660
5661 p = xdr_inline_decode(xdr, 28);
5662 if (unlikely(!p))
5663 goto out_overflow;
5664 val = be32_to_cpup(p++); /* headerpadsz */
5665 if (val)
5666 return -EINVAL; /* no support for header padding yet */
5667 attrs->max_rqst_sz = be32_to_cpup(p++);
5668 attrs->max_resp_sz = be32_to_cpup(p++);
5669 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5670 attrs->max_ops = be32_to_cpup(p++);
5671 attrs->max_reqs = be32_to_cpup(p++);
5672 nr_attrs = be32_to_cpup(p);
5673 if (unlikely(nr_attrs > 1)) {
5674 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5675 "count %u\n", __func__, nr_attrs);
5676 return -EINVAL;
5677 }
5678 if (nr_attrs == 1) {
5679 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5680 if (unlikely(!p))
5681 goto out_overflow;
5682 }
5683 return 0;
5684out_overflow:
5685 print_overflow_msg(__func__, xdr);
5686 return -EIO;
5687}
5688
5689static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5690{
5691 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5692}
5693
5694static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5695 struct nfs41_bind_conn_to_session_res *res)
5696{
5697 __be32 *p;
5698 int status;
5699
5700 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5701 if (!status)
5702 status = decode_sessionid(xdr, &res->sessionid);
5703 if (unlikely(status))
5704 return status;
5705
5706 /* dir flags, rdma mode bool */
5707 p = xdr_inline_decode(xdr, 8);
5708 if (unlikely(!p))
5709 goto out_overflow;
5710
5711 res->dir = be32_to_cpup(p++);
5712 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5713 return -EIO;
5714 if (be32_to_cpup(p) == 0)
5715 res->use_conn_in_rdma_mode = false;
5716 else
5717 res->use_conn_in_rdma_mode = true;
5718
5719 return 0;
5720out_overflow:
5721 print_overflow_msg(__func__, xdr);
5722 return -EIO;
5723}
5724
5725static int decode_create_session(struct xdr_stream *xdr,
5726 struct nfs41_create_session_res *res)
5727{
5728 __be32 *p;
5729 int status;
5730
5731 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5732 if (!status)
5733 status = decode_sessionid(xdr, &res->sessionid);
5734 if (unlikely(status))
5735 return status;
5736
5737 /* seqid, flags */
5738 p = xdr_inline_decode(xdr, 8);
5739 if (unlikely(!p))
5740 goto out_overflow;
5741 res->seqid = be32_to_cpup(p++);
5742 res->flags = be32_to_cpup(p);
5743
5744 /* Channel attributes */
5745 status = decode_chan_attrs(xdr, &res->fc_attrs);
5746 if (!status)
5747 status = decode_chan_attrs(xdr, &res->bc_attrs);
5748 return status;
5749out_overflow:
5750 print_overflow_msg(__func__, xdr);
5751 return -EIO;
5752}
5753
5754static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5755{
5756 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5757}
5758
5759static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5760{
5761 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5762}
5763
5764static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5765{
5766 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5767}
5768#endif /* CONFIG_NFS_V4_1 */
5769
5770static int decode_sequence(struct xdr_stream *xdr,
5771 struct nfs4_sequence_res *res,
5772 struct rpc_rqst *rqstp)
5773{
5774#if defined(CONFIG_NFS_V4_1)
5775 struct nfs4_session *session;
5776 struct nfs4_sessionid id;
5777 u32 dummy;
5778 int status;
5779 __be32 *p;
5780
5781 if (res->sr_slot == NULL)
5782 return 0;
5783 if (!res->sr_slot->table->session)
5784 return 0;
5785
5786 status = decode_op_hdr(xdr, OP_SEQUENCE);
5787 if (!status)
5788 status = decode_sessionid(xdr, &id);
5789 if (unlikely(status))
5790 goto out_err;
5791
5792 /*
5793 * If the server returns different values for sessionID, slotID or
5794 * sequence number, the server is looney tunes.
5795 */
5796 status = -EREMOTEIO;
5797 session = res->sr_slot->table->session;
5798
5799 if (memcmp(id.data, session->sess_id.data,
5800 NFS4_MAX_SESSIONID_LEN)) {
5801 dprintk("%s Invalid session id\n", __func__);
5802 goto out_err;
5803 }
5804
5805 p = xdr_inline_decode(xdr, 20);
5806 if (unlikely(!p))
5807 goto out_overflow;
5808
5809 /* seqid */
5810 dummy = be32_to_cpup(p++);
5811 if (dummy != res->sr_slot->seq_nr) {
5812 dprintk("%s Invalid sequence number\n", __func__);
5813 goto out_err;
5814 }
5815 /* slot id */
5816 dummy = be32_to_cpup(p++);
5817 if (dummy != res->sr_slot->slot_nr) {
5818 dprintk("%s Invalid slot id\n", __func__);
5819 goto out_err;
5820 }
5821 /* highest slot id */
5822 res->sr_highest_slotid = be32_to_cpup(p++);
5823 /* target highest slot id */
5824 res->sr_target_highest_slotid = be32_to_cpup(p++);
5825 /* result flags */
5826 res->sr_status_flags = be32_to_cpup(p);
5827 status = 0;
5828out_err:
5829 res->sr_status = status;
5830 return status;
5831out_overflow:
5832 print_overflow_msg(__func__, xdr);
5833 status = -EIO;
5834 goto out_err;
5835#else /* CONFIG_NFS_V4_1 */
5836 return 0;
5837#endif /* CONFIG_NFS_V4_1 */
5838}
5839
5840#if defined(CONFIG_NFS_V4_1)
5841static int decode_getdeviceinfo(struct xdr_stream *xdr,
5842 struct nfs4_getdeviceinfo_res *res)
5843{
5844 struct pnfs_device *pdev = res->pdev;
5845 __be32 *p;
5846 uint32_t len, type;
5847 int status;
5848
5849 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5850 if (status) {
5851 if (status == -ETOOSMALL) {
5852 p = xdr_inline_decode(xdr, 4);
5853 if (unlikely(!p))
5854 goto out_overflow;
5855 pdev->mincount = be32_to_cpup(p);
5856 dprintk("%s: Min count too small. mincnt = %u\n",
5857 __func__, pdev->mincount);
5858 }
5859 return status;
5860 }
5861
5862 p = xdr_inline_decode(xdr, 8);
5863 if (unlikely(!p))
5864 goto out_overflow;
5865 type = be32_to_cpup(p++);
5866 if (type != pdev->layout_type) {
5867 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5868 __func__, pdev->layout_type, type);
5869 return -EINVAL;
5870 }
5871 /*
5872 * Get the length of the opaque device_addr4. xdr_read_pages places
5873 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5874 * and places the remaining xdr data in xdr_buf->tail
5875 */
5876 pdev->mincount = be32_to_cpup(p);
5877 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5878 goto out_overflow;
5879
5880 /* Parse notification bitmap, verifying that it is zero. */
5881 p = xdr_inline_decode(xdr, 4);
5882 if (unlikely(!p))
5883 goto out_overflow;
5884 len = be32_to_cpup(p);
5885 if (len) {
5886 uint32_t i;
5887
5888 p = xdr_inline_decode(xdr, 4 * len);
5889 if (unlikely(!p))
5890 goto out_overflow;
5891
5892 res->notification = be32_to_cpup(p++);
5893 for (i = 1; i < len; i++) {
5894 if (be32_to_cpup(p++)) {
5895 dprintk("%s: unsupported notification\n",
5896 __func__);
5897 return -EIO;
5898 }
5899 }
5900 }
5901 return 0;
5902out_overflow:
5903 print_overflow_msg(__func__, xdr);
5904 return -EIO;
5905}
5906
5907static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5908 struct nfs4_layoutget_res *res)
5909{
5910 __be32 *p;
5911 int status;
5912 u32 layout_count;
5913 u32 recvd;
5914
5915 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5916 if (status)
5917 return status;
5918 p = xdr_inline_decode(xdr, 4);
5919 if (unlikely(!p))
5920 goto out_overflow;
5921 res->return_on_close = be32_to_cpup(p);
5922 decode_stateid(xdr, &res->stateid);
5923 p = xdr_inline_decode(xdr, 4);
5924 if (unlikely(!p))
5925 goto out_overflow;
5926 layout_count = be32_to_cpup(p);
5927 if (!layout_count) {
5928 dprintk("%s: server responded with empty layout array\n",
5929 __func__);
5930 return -EINVAL;
5931 }
5932
5933 p = xdr_inline_decode(xdr, 28);
5934 if (unlikely(!p))
5935 goto out_overflow;
5936 p = xdr_decode_hyper(p, &res->range.offset);
5937 p = xdr_decode_hyper(p, &res->range.length);
5938 res->range.iomode = be32_to_cpup(p++);
5939 res->type = be32_to_cpup(p++);
5940 res->layoutp->len = be32_to_cpup(p);
5941
5942 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5943 __func__,
5944 (unsigned long)res->range.offset,
5945 (unsigned long)res->range.length,
5946 res->range.iomode,
5947 res->type,
5948 res->layoutp->len);
5949
5950 recvd = xdr_read_pages(xdr, res->layoutp->len);
5951 if (res->layoutp->len > recvd) {
5952 dprintk("NFS: server cheating in layoutget reply: "
5953 "layout len %u > recvd %u\n",
5954 res->layoutp->len, recvd);
5955 return -EINVAL;
5956 }
5957
5958 if (layout_count > 1) {
5959 /* We only handle a length one array at the moment. Any
5960 * further entries are just ignored. Note that this means
5961 * the client may see a response that is less than the
5962 * minimum it requested.
5963 */
5964 dprintk("%s: server responded with %d layouts, dropping tail\n",
5965 __func__, layout_count);
5966 }
5967
5968 return 0;
5969out_overflow:
5970 print_overflow_msg(__func__, xdr);
5971 return -EIO;
5972}
5973
5974static int decode_layoutreturn(struct xdr_stream *xdr,
5975 struct nfs4_layoutreturn_res *res)
5976{
5977 __be32 *p;
5978 int status;
5979
5980 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5981 if (status)
5982 return status;
5983 p = xdr_inline_decode(xdr, 4);
5984 if (unlikely(!p))
5985 goto out_overflow;
5986 res->lrs_present = be32_to_cpup(p);
5987 if (res->lrs_present)
5988 status = decode_stateid(xdr, &res->stateid);
5989 return status;
5990out_overflow:
5991 print_overflow_msg(__func__, xdr);
5992 return -EIO;
5993}
5994
5995static int decode_layoutcommit(struct xdr_stream *xdr,
5996 struct rpc_rqst *req,
5997 struct nfs4_layoutcommit_res *res)
5998{
5999 __be32 *p;
6000 __u32 sizechanged;
6001 int status;
6002
6003 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6004 res->status = status;
6005 if (status)
6006 return status;
6007
6008 p = xdr_inline_decode(xdr, 4);
6009 if (unlikely(!p))
6010 goto out_overflow;
6011 sizechanged = be32_to_cpup(p);
6012
6013 if (sizechanged) {
6014 /* throw away new size */
6015 p = xdr_inline_decode(xdr, 8);
6016 if (unlikely(!p))
6017 goto out_overflow;
6018 }
6019 return 0;
6020out_overflow:
6021 print_overflow_msg(__func__, xdr);
6022 return -EIO;
6023}
6024
6025static int decode_test_stateid(struct xdr_stream *xdr,
6026 struct nfs41_test_stateid_res *res)
6027{
6028 __be32 *p;
6029 int status;
6030 int num_res;
6031
6032 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6033 if (status)
6034 return status;
6035
6036 p = xdr_inline_decode(xdr, 4);
6037 if (unlikely(!p))
6038 goto out_overflow;
6039 num_res = be32_to_cpup(p++);
6040 if (num_res != 1)
6041 goto out;
6042
6043 p = xdr_inline_decode(xdr, 4);
6044 if (unlikely(!p))
6045 goto out_overflow;
6046 res->status = be32_to_cpup(p++);
6047
6048 return status;
6049out_overflow:
6050 print_overflow_msg(__func__, xdr);
6051out:
6052 return -EIO;
6053}
6054
6055static int decode_free_stateid(struct xdr_stream *xdr,
6056 struct nfs41_free_stateid_res *res)
6057{
6058 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6059 return res->status;
6060}
6061#endif /* CONFIG_NFS_V4_1 */
6062
6063/*
6064 * END OF "GENERIC" DECODE ROUTINES.
6065 */
6066
6067/*
6068 * Decode OPEN_DOWNGRADE response
6069 */
6070static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6071 struct xdr_stream *xdr,
6072 struct nfs_closeres *res)
6073{
6074 struct compound_hdr hdr;
6075 int status;
6076
6077 status = decode_compound_hdr(xdr, &hdr);
6078 if (status)
6079 goto out;
6080 status = decode_sequence(xdr, &res->seq_res, rqstp);
6081 if (status)
6082 goto out;
6083 status = decode_putfh(xdr);
6084 if (status)
6085 goto out;
6086 status = decode_open_downgrade(xdr, res);
6087 if (status != 0)
6088 goto out;
6089 decode_getfattr(xdr, res->fattr, res->server);
6090out:
6091 return status;
6092}
6093
6094/*
6095 * Decode ACCESS response
6096 */
6097static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6098 struct nfs4_accessres *res)
6099{
6100 struct compound_hdr hdr;
6101 int status;
6102
6103 status = decode_compound_hdr(xdr, &hdr);
6104 if (status)
6105 goto out;
6106 status = decode_sequence(xdr, &res->seq_res, rqstp);
6107 if (status)
6108 goto out;
6109 status = decode_putfh(xdr);
6110 if (status != 0)
6111 goto out;
6112 status = decode_access(xdr, &res->supported, &res->access);
6113 if (status != 0)
6114 goto out;
6115 decode_getfattr(xdr, res->fattr, res->server);
6116out:
6117 return status;
6118}
6119
6120/*
6121 * Decode LOOKUP response
6122 */
6123static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6124 struct nfs4_lookup_res *res)
6125{
6126 struct compound_hdr hdr;
6127 int status;
6128
6129 status = decode_compound_hdr(xdr, &hdr);
6130 if (status)
6131 goto out;
6132 status = decode_sequence(xdr, &res->seq_res, rqstp);
6133 if (status)
6134 goto out;
6135 status = decode_putfh(xdr);
6136 if (status)
6137 goto out;
6138 status = decode_lookup(xdr);
6139 if (status)
6140 goto out;
6141 status = decode_getfh(xdr, res->fh);
6142 if (status)
6143 goto out;
6144 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6145out:
6146 return status;
6147}
6148
6149/*
6150 * Decode LOOKUP_ROOT response
6151 */
6152static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6153 struct xdr_stream *xdr,
6154 struct nfs4_lookup_res *res)
6155{
6156 struct compound_hdr hdr;
6157 int status;
6158
6159 status = decode_compound_hdr(xdr, &hdr);
6160 if (status)
6161 goto out;
6162 status = decode_sequence(xdr, &res->seq_res, rqstp);
6163 if (status)
6164 goto out;
6165 status = decode_putrootfh(xdr);
6166 if (status)
6167 goto out;
6168 status = decode_getfh(xdr, res->fh);
6169 if (status == 0)
6170 status = decode_getfattr_label(xdr, res->fattr,
6171 res->label, res->server);
6172out:
6173 return status;
6174}
6175
6176/*
6177 * Decode REMOVE response
6178 */
6179static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6180 struct nfs_removeres *res)
6181{
6182 struct compound_hdr hdr;
6183 int status;
6184
6185 status = decode_compound_hdr(xdr, &hdr);
6186 if (status)
6187 goto out;
6188 status = decode_sequence(xdr, &res->seq_res, rqstp);
6189 if (status)
6190 goto out;
6191 status = decode_putfh(xdr);
6192 if (status)
6193 goto out;
6194 status = decode_remove(xdr, &res->cinfo);
6195out:
6196 return status;
6197}
6198
6199/*
6200 * Decode RENAME response
6201 */
6202static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6203 struct nfs_renameres *res)
6204{
6205 struct compound_hdr hdr;
6206 int status;
6207
6208 status = decode_compound_hdr(xdr, &hdr);
6209 if (status)
6210 goto out;
6211 status = decode_sequence(xdr, &res->seq_res, rqstp);
6212 if (status)
6213 goto out;
6214 status = decode_putfh(xdr);
6215 if (status)
6216 goto out;
6217 status = decode_savefh(xdr);
6218 if (status)
6219 goto out;
6220 status = decode_putfh(xdr);
6221 if (status)
6222 goto out;
6223 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6224out:
6225 return status;
6226}
6227
6228/*
6229 * Decode LINK response
6230 */
6231static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6232 struct nfs4_link_res *res)
6233{
6234 struct compound_hdr hdr;
6235 int status;
6236
6237 status = decode_compound_hdr(xdr, &hdr);
6238 if (status)
6239 goto out;
6240 status = decode_sequence(xdr, &res->seq_res, rqstp);
6241 if (status)
6242 goto out;
6243 status = decode_putfh(xdr);
6244 if (status)
6245 goto out;
6246 status = decode_savefh(xdr);
6247 if (status)
6248 goto out;
6249 status = decode_putfh(xdr);
6250 if (status)
6251 goto out;
6252 status = decode_link(xdr, &res->cinfo);
6253 if (status)
6254 goto out;
6255 /*
6256 * Note order: OP_LINK leaves the directory as the current
6257 * filehandle.
6258 */
6259 status = decode_restorefh(xdr);
6260 if (status)
6261 goto out;
6262 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6263out:
6264 return status;
6265}
6266
6267/*
6268 * Decode CREATE response
6269 */
6270static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6271 struct nfs4_create_res *res)
6272{
6273 struct compound_hdr hdr;
6274 int status;
6275
6276 status = decode_compound_hdr(xdr, &hdr);
6277 if (status)
6278 goto out;
6279 status = decode_sequence(xdr, &res->seq_res, rqstp);
6280 if (status)
6281 goto out;
6282 status = decode_putfh(xdr);
6283 if (status)
6284 goto out;
6285 status = decode_create(xdr, &res->dir_cinfo);
6286 if (status)
6287 goto out;
6288 status = decode_getfh(xdr, res->fh);
6289 if (status)
6290 goto out;
6291 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6292out:
6293 return status;
6294}
6295
6296/*
6297 * Decode SYMLINK response
6298 */
6299static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6300 struct nfs4_create_res *res)
6301{
6302 return nfs4_xdr_dec_create(rqstp, xdr, res);
6303}
6304
6305/*
6306 * Decode GETATTR response
6307 */
6308static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6309 struct nfs4_getattr_res *res)
6310{
6311 struct compound_hdr hdr;
6312 int status;
6313
6314 status = decode_compound_hdr(xdr, &hdr);
6315 if (status)
6316 goto out;
6317 status = decode_sequence(xdr, &res->seq_res, rqstp);
6318 if (status)
6319 goto out;
6320 status = decode_putfh(xdr);
6321 if (status)
6322 goto out;
6323 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6324out:
6325 return status;
6326}
6327
6328/*
6329 * Encode an SETACL request
6330 */
6331static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6332 struct nfs_setaclargs *args)
6333{
6334 struct compound_hdr hdr = {
6335 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6336 };
6337
6338 encode_compound_hdr(xdr, req, &hdr);
6339 encode_sequence(xdr, &args->seq_args, &hdr);
6340 encode_putfh(xdr, args->fh, &hdr);
6341 encode_setacl(xdr, args, &hdr);
6342 encode_nops(&hdr);
6343}
6344
6345/*
6346 * Decode SETACL response
6347 */
6348static int
6349nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6350 struct nfs_setaclres *res)
6351{
6352 struct compound_hdr hdr;
6353 int status;
6354
6355 status = decode_compound_hdr(xdr, &hdr);
6356 if (status)
6357 goto out;
6358 status = decode_sequence(xdr, &res->seq_res, rqstp);
6359 if (status)
6360 goto out;
6361 status = decode_putfh(xdr);
6362 if (status)
6363 goto out;
6364 status = decode_setattr(xdr);
6365out:
6366 return status;
6367}
6368
6369/*
6370 * Decode GETACL response
6371 */
6372static int
6373nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6374 struct nfs_getaclres *res)
6375{
6376 struct compound_hdr hdr;
6377 int status;
6378
6379 if (res->acl_scratch != NULL) {
6380 void *p = page_address(res->acl_scratch);
6381 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6382 }
6383 status = decode_compound_hdr(xdr, &hdr);
6384 if (status)
6385 goto out;
6386 status = decode_sequence(xdr, &res->seq_res, rqstp);
6387 if (status)
6388 goto out;
6389 status = decode_putfh(xdr);
6390 if (status)
6391 goto out;
6392 status = decode_getacl(xdr, rqstp, res);
6393
6394out:
6395 return status;
6396}
6397
6398/*
6399 * Decode CLOSE response
6400 */
6401static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6402 struct nfs_closeres *res)
6403{
6404 struct compound_hdr hdr;
6405 int status;
6406
6407 status = decode_compound_hdr(xdr, &hdr);
6408 if (status)
6409 goto out;
6410 status = decode_sequence(xdr, &res->seq_res, rqstp);
6411 if (status)
6412 goto out;
6413 status = decode_putfh(xdr);
6414 if (status)
6415 goto out;
6416 status = decode_close(xdr, res);
6417 if (status != 0)
6418 goto out;
6419 /*
6420 * Note: Server may do delete on close for this file
6421 * in which case the getattr call will fail with
6422 * an ESTALE error. Shouldn't be a problem,
6423 * though, since fattr->valid will remain unset.
6424 */
6425 decode_getfattr(xdr, res->fattr, res->server);
6426out:
6427 return status;
6428}
6429
6430/*
6431 * Decode OPEN response
6432 */
6433static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6434 struct nfs_openres *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_open(xdr, res);
6449 if (status)
6450 goto out;
6451 status = decode_getfh(xdr, &res->fh);
6452 if (status)
6453 goto out;
6454 if (res->access_request)
6455 decode_access(xdr, &res->access_supported, &res->access_result);
6456 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6457out:
6458 return status;
6459}
6460
6461/*
6462 * Decode OPEN_CONFIRM response
6463 */
6464static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6465 struct xdr_stream *xdr,
6466 struct nfs_open_confirmres *res)
6467{
6468 struct compound_hdr hdr;
6469 int status;
6470
6471 status = decode_compound_hdr(xdr, &hdr);
6472 if (status)
6473 goto out;
6474 status = decode_putfh(xdr);
6475 if (status)
6476 goto out;
6477 status = decode_open_confirm(xdr, res);
6478out:
6479 return status;
6480}
6481
6482/*
6483 * Decode OPEN response
6484 */
6485static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6486 struct xdr_stream *xdr,
6487 struct nfs_openres *res)
6488{
6489 struct compound_hdr hdr;
6490 int status;
6491
6492 status = decode_compound_hdr(xdr, &hdr);
6493 if (status)
6494 goto out;
6495 status = decode_sequence(xdr, &res->seq_res, rqstp);
6496 if (status)
6497 goto out;
6498 status = decode_putfh(xdr);
6499 if (status)
6500 goto out;
6501 status = decode_open(xdr, res);
6502 if (status)
6503 goto out;
6504 if (res->access_request)
6505 decode_access(xdr, &res->access_supported, &res->access_result);
6506 decode_getfattr(xdr, res->f_attr, res->server);
6507out:
6508 return status;
6509}
6510
6511/*
6512 * Decode SETATTR response
6513 */
6514static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6515 struct xdr_stream *xdr,
6516 struct nfs_setattrres *res)
6517{
6518 struct compound_hdr hdr;
6519 int status;
6520
6521 status = decode_compound_hdr(xdr, &hdr);
6522 if (status)
6523 goto out;
6524 status = decode_sequence(xdr, &res->seq_res, rqstp);
6525 if (status)
6526 goto out;
6527 status = decode_putfh(xdr);
6528 if (status)
6529 goto out;
6530 status = decode_setattr(xdr);
6531 if (status)
6532 goto out;
6533 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6534out:
6535 return status;
6536}
6537
6538/*
6539 * Decode LOCK response
6540 */
6541static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6542 struct nfs_lock_res *res)
6543{
6544 struct compound_hdr hdr;
6545 int status;
6546
6547 status = decode_compound_hdr(xdr, &hdr);
6548 if (status)
6549 goto out;
6550 status = decode_sequence(xdr, &res->seq_res, rqstp);
6551 if (status)
6552 goto out;
6553 status = decode_putfh(xdr);
6554 if (status)
6555 goto out;
6556 status = decode_lock(xdr, res);
6557out:
6558 return status;
6559}
6560
6561/*
6562 * Decode LOCKT response
6563 */
6564static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6565 struct nfs_lockt_res *res)
6566{
6567 struct compound_hdr hdr;
6568 int status;
6569
6570 status = decode_compound_hdr(xdr, &hdr);
6571 if (status)
6572 goto out;
6573 status = decode_sequence(xdr, &res->seq_res, rqstp);
6574 if (status)
6575 goto out;
6576 status = decode_putfh(xdr);
6577 if (status)
6578 goto out;
6579 status = decode_lockt(xdr, res);
6580out:
6581 return status;
6582}
6583
6584/*
6585 * Decode LOCKU response
6586 */
6587static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6588 struct nfs_locku_res *res)
6589{
6590 struct compound_hdr hdr;
6591 int status;
6592
6593 status = decode_compound_hdr(xdr, &hdr);
6594 if (status)
6595 goto out;
6596 status = decode_sequence(xdr, &res->seq_res, rqstp);
6597 if (status)
6598 goto out;
6599 status = decode_putfh(xdr);
6600 if (status)
6601 goto out;
6602 status = decode_locku(xdr, res);
6603out:
6604 return status;
6605}
6606
6607static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6608 struct xdr_stream *xdr, void *dummy)
6609{
6610 struct compound_hdr hdr;
6611 int status;
6612
6613 status = decode_compound_hdr(xdr, &hdr);
6614 if (!status)
6615 status = decode_release_lockowner(xdr);
6616 return status;
6617}
6618
6619/*
6620 * Decode READLINK response
6621 */
6622static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6623 struct xdr_stream *xdr,
6624 struct nfs4_readlink_res *res)
6625{
6626 struct compound_hdr hdr;
6627 int status;
6628
6629 status = decode_compound_hdr(xdr, &hdr);
6630 if (status)
6631 goto out;
6632 status = decode_sequence(xdr, &res->seq_res, rqstp);
6633 if (status)
6634 goto out;
6635 status = decode_putfh(xdr);
6636 if (status)
6637 goto out;
6638 status = decode_readlink(xdr, rqstp);
6639out:
6640 return status;
6641}
6642
6643/*
6644 * Decode READDIR response
6645 */
6646static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6647 struct nfs4_readdir_res *res)
6648{
6649 struct compound_hdr hdr;
6650 int status;
6651
6652 status = decode_compound_hdr(xdr, &hdr);
6653 if (status)
6654 goto out;
6655 status = decode_sequence(xdr, &res->seq_res, rqstp);
6656 if (status)
6657 goto out;
6658 status = decode_putfh(xdr);
6659 if (status)
6660 goto out;
6661 status = decode_readdir(xdr, rqstp, res);
6662out:
6663 return status;
6664}
6665
6666/*
6667 * Decode Read response
6668 */
6669static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6670 struct nfs_pgio_res *res)
6671{
6672 struct compound_hdr hdr;
6673 int status;
6674
6675 status = decode_compound_hdr(xdr, &hdr);
6676 res->op_status = hdr.status;
6677 if (status)
6678 goto out;
6679 status = decode_sequence(xdr, &res->seq_res, rqstp);
6680 if (status)
6681 goto out;
6682 status = decode_putfh(xdr);
6683 if (status)
6684 goto out;
6685 status = decode_read(xdr, rqstp, res);
6686 if (!status)
6687 status = res->count;
6688out:
6689 return status;
6690}
6691
6692/*
6693 * Decode WRITE response
6694 */
6695static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6696 struct nfs_pgio_res *res)
6697{
6698 struct compound_hdr hdr;
6699 int status;
6700
6701 status = decode_compound_hdr(xdr, &hdr);
6702 res->op_status = hdr.status;
6703 if (status)
6704 goto out;
6705 status = decode_sequence(xdr, &res->seq_res, rqstp);
6706 if (status)
6707 goto out;
6708 status = decode_putfh(xdr);
6709 if (status)
6710 goto out;
6711 status = decode_write(xdr, res);
6712 if (status)
6713 goto out;
6714 if (res->fattr)
6715 decode_getfattr(xdr, res->fattr, res->server);
6716 if (!status)
6717 status = res->count;
6718out:
6719 return status;
6720}
6721
6722/*
6723 * Decode COMMIT response
6724 */
6725static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6726 struct nfs_commitres *res)
6727{
6728 struct compound_hdr hdr;
6729 int status;
6730
6731 status = decode_compound_hdr(xdr, &hdr);
6732 res->op_status = hdr.status;
6733 if (status)
6734 goto out;
6735 status = decode_sequence(xdr, &res->seq_res, rqstp);
6736 if (status)
6737 goto out;
6738 status = decode_putfh(xdr);
6739 if (status)
6740 goto out;
6741 status = decode_commit(xdr, res);
6742out:
6743 return status;
6744}
6745
6746/*
6747 * Decode FSINFO response
6748 */
6749static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6750 struct nfs4_fsinfo_res *res)
6751{
6752 struct compound_hdr hdr;
6753 int status;
6754
6755 status = decode_compound_hdr(xdr, &hdr);
6756 if (!status)
6757 status = decode_sequence(xdr, &res->seq_res, req);
6758 if (!status)
6759 status = decode_putfh(xdr);
6760 if (!status)
6761 status = decode_fsinfo(xdr, res->fsinfo);
6762 return status;
6763}
6764
6765/*
6766 * Decode PATHCONF response
6767 */
6768static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6769 struct nfs4_pathconf_res *res)
6770{
6771 struct compound_hdr hdr;
6772 int status;
6773
6774 status = decode_compound_hdr(xdr, &hdr);
6775 if (!status)
6776 status = decode_sequence(xdr, &res->seq_res, req);
6777 if (!status)
6778 status = decode_putfh(xdr);
6779 if (!status)
6780 status = decode_pathconf(xdr, res->pathconf);
6781 return status;
6782}
6783
6784/*
6785 * Decode STATFS response
6786 */
6787static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6788 struct nfs4_statfs_res *res)
6789{
6790 struct compound_hdr hdr;
6791 int status;
6792
6793 status = decode_compound_hdr(xdr, &hdr);
6794 if (!status)
6795 status = decode_sequence(xdr, &res->seq_res, req);
6796 if (!status)
6797 status = decode_putfh(xdr);
6798 if (!status)
6799 status = decode_statfs(xdr, res->fsstat);
6800 return status;
6801}
6802
6803/*
6804 * Decode GETATTR_BITMAP response
6805 */
6806static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6807 struct xdr_stream *xdr,
6808 struct nfs4_server_caps_res *res)
6809{
6810 struct compound_hdr hdr;
6811 int status;
6812
6813 status = decode_compound_hdr(xdr, &hdr);
6814 if (status)
6815 goto out;
6816 status = decode_sequence(xdr, &res->seq_res, req);
6817 if (status)
6818 goto out;
6819 status = decode_putfh(xdr);
6820 if (status)
6821 goto out;
6822 status = decode_server_caps(xdr, res);
6823out:
6824 return status;
6825}
6826
6827/*
6828 * Decode RENEW response
6829 */
6830static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6831 void *__unused)
6832{
6833 struct compound_hdr hdr;
6834 int status;
6835
6836 status = decode_compound_hdr(xdr, &hdr);
6837 if (!status)
6838 status = decode_renew(xdr);
6839 return status;
6840}
6841
6842/*
6843 * Decode SETCLIENTID response
6844 */
6845static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6846 struct xdr_stream *xdr,
6847 struct nfs4_setclientid_res *res)
6848{
6849 struct compound_hdr hdr;
6850 int status;
6851
6852 status = decode_compound_hdr(xdr, &hdr);
6853 if (!status)
6854 status = decode_setclientid(xdr, res);
6855 return status;
6856}
6857
6858/*
6859 * Decode SETCLIENTID_CONFIRM response
6860 */
6861static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6862 struct xdr_stream *xdr)
6863{
6864 struct compound_hdr hdr;
6865 int status;
6866
6867 status = decode_compound_hdr(xdr, &hdr);
6868 if (!status)
6869 status = decode_setclientid_confirm(xdr);
6870 return status;
6871}
6872
6873/*
6874 * Decode DELEGRETURN response
6875 */
6876static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6877 struct xdr_stream *xdr,
6878 struct nfs4_delegreturnres *res)
6879{
6880 struct compound_hdr hdr;
6881 int status;
6882
6883 status = decode_compound_hdr(xdr, &hdr);
6884 if (status)
6885 goto out;
6886 status = decode_sequence(xdr, &res->seq_res, rqstp);
6887 if (status)
6888 goto out;
6889 status = decode_putfh(xdr);
6890 if (status != 0)
6891 goto out;
6892 status = decode_getfattr(xdr, res->fattr, res->server);
6893 if (status != 0)
6894 goto out;
6895 status = decode_delegreturn(xdr);
6896out:
6897 return status;
6898}
6899
6900/*
6901 * Decode FS_LOCATIONS response
6902 */
6903static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6904 struct xdr_stream *xdr,
6905 struct nfs4_fs_locations_res *res)
6906{
6907 struct compound_hdr hdr;
6908 int status;
6909
6910 status = decode_compound_hdr(xdr, &hdr);
6911 if (status)
6912 goto out;
6913 status = decode_sequence(xdr, &res->seq_res, req);
6914 if (status)
6915 goto out;
6916 status = decode_putfh(xdr);
6917 if (status)
6918 goto out;
6919 if (res->migration) {
6920 xdr_enter_page(xdr, PAGE_SIZE);
6921 status = decode_getfattr_generic(xdr,
6922 &res->fs_locations->fattr,
6923 NULL, res->fs_locations,
6924 NULL, res->fs_locations->server);
6925 if (status)
6926 goto out;
6927 if (res->renew)
6928 status = decode_renew(xdr);
6929 } else {
6930 status = decode_lookup(xdr);
6931 if (status)
6932 goto out;
6933 xdr_enter_page(xdr, PAGE_SIZE);
6934 status = decode_getfattr_generic(xdr,
6935 &res->fs_locations->fattr,
6936 NULL, res->fs_locations,
6937 NULL, res->fs_locations->server);
6938 }
6939out:
6940 return status;
6941}
6942
6943/*
6944 * Decode SECINFO response
6945 */
6946static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6947 struct xdr_stream *xdr,
6948 struct nfs4_secinfo_res *res)
6949{
6950 struct compound_hdr hdr;
6951 int status;
6952
6953 status = decode_compound_hdr(xdr, &hdr);
6954 if (status)
6955 goto out;
6956 status = decode_sequence(xdr, &res->seq_res, rqstp);
6957 if (status)
6958 goto out;
6959 status = decode_putfh(xdr);
6960 if (status)
6961 goto out;
6962 status = decode_secinfo(xdr, res);
6963out:
6964 return status;
6965}
6966
6967/*
6968 * Decode FSID_PRESENT response
6969 */
6970static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
6971 struct xdr_stream *xdr,
6972 struct nfs4_fsid_present_res *res)
6973{
6974 struct compound_hdr hdr;
6975 int status;
6976
6977 status = decode_compound_hdr(xdr, &hdr);
6978 if (status)
6979 goto out;
6980 status = decode_sequence(xdr, &res->seq_res, rqstp);
6981 if (status)
6982 goto out;
6983 status = decode_putfh(xdr);
6984 if (status)
6985 goto out;
6986 status = decode_getfh(xdr, res->fh);
6987 if (status)
6988 goto out;
6989 if (res->renew)
6990 status = decode_renew(xdr);
6991out:
6992 return status;
6993}
6994
6995#if defined(CONFIG_NFS_V4_1)
6996/*
6997 * Decode BIND_CONN_TO_SESSION response
6998 */
6999static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7000 struct xdr_stream *xdr,
7001 void *res)
7002{
7003 struct compound_hdr hdr;
7004 int status;
7005
7006 status = decode_compound_hdr(xdr, &hdr);
7007 if (!status)
7008 status = decode_bind_conn_to_session(xdr, res);
7009 return status;
7010}
7011
7012/*
7013 * Decode EXCHANGE_ID response
7014 */
7015static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7016 struct xdr_stream *xdr,
7017 void *res)
7018{
7019 struct compound_hdr hdr;
7020 int status;
7021
7022 status = decode_compound_hdr(xdr, &hdr);
7023 if (!status)
7024 status = decode_exchange_id(xdr, res);
7025 return status;
7026}
7027
7028/*
7029 * Decode CREATE_SESSION response
7030 */
7031static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7032 struct xdr_stream *xdr,
7033 struct nfs41_create_session_res *res)
7034{
7035 struct compound_hdr hdr;
7036 int status;
7037
7038 status = decode_compound_hdr(xdr, &hdr);
7039 if (!status)
7040 status = decode_create_session(xdr, res);
7041 return status;
7042}
7043
7044/*
7045 * Decode DESTROY_SESSION response
7046 */
7047static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7048 struct xdr_stream *xdr,
7049 void *res)
7050{
7051 struct compound_hdr hdr;
7052 int status;
7053
7054 status = decode_compound_hdr(xdr, &hdr);
7055 if (!status)
7056 status = decode_destroy_session(xdr, res);
7057 return status;
7058}
7059
7060/*
7061 * Decode DESTROY_CLIENTID response
7062 */
7063static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7064 struct xdr_stream *xdr,
7065 void *res)
7066{
7067 struct compound_hdr hdr;
7068 int status;
7069
7070 status = decode_compound_hdr(xdr, &hdr);
7071 if (!status)
7072 status = decode_destroy_clientid(xdr, res);
7073 return status;
7074}
7075
7076/*
7077 * Decode SEQUENCE response
7078 */
7079static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7080 struct xdr_stream *xdr,
7081 struct nfs4_sequence_res *res)
7082{
7083 struct compound_hdr hdr;
7084 int status;
7085
7086 status = decode_compound_hdr(xdr, &hdr);
7087 if (!status)
7088 status = decode_sequence(xdr, res, rqstp);
7089 return status;
7090}
7091
7092/*
7093 * Decode GET_LEASE_TIME response
7094 */
7095static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7096 struct xdr_stream *xdr,
7097 struct nfs4_get_lease_time_res *res)
7098{
7099 struct compound_hdr hdr;
7100 int status;
7101
7102 status = decode_compound_hdr(xdr, &hdr);
7103 if (!status)
7104 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7105 if (!status)
7106 status = decode_putrootfh(xdr);
7107 if (!status)
7108 status = decode_fsinfo(xdr, res->lr_fsinfo);
7109 return status;
7110}
7111
7112/*
7113 * Decode RECLAIM_COMPLETE response
7114 */
7115static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7116 struct xdr_stream *xdr,
7117 struct nfs41_reclaim_complete_res *res)
7118{
7119 struct compound_hdr hdr;
7120 int status;
7121
7122 status = decode_compound_hdr(xdr, &hdr);
7123 if (!status)
7124 status = decode_sequence(xdr, &res->seq_res, rqstp);
7125 if (!status)
7126 status = decode_reclaim_complete(xdr, NULL);
7127 return status;
7128}
7129
7130/*
7131 * Decode GETDEVINFO response
7132 */
7133static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7134 struct xdr_stream *xdr,
7135 struct nfs4_getdeviceinfo_res *res)
7136{
7137 struct compound_hdr hdr;
7138 int status;
7139
7140 status = decode_compound_hdr(xdr, &hdr);
7141 if (status != 0)
7142 goto out;
7143 status = decode_sequence(xdr, &res->seq_res, rqstp);
7144 if (status != 0)
7145 goto out;
7146 status = decode_getdeviceinfo(xdr, res);
7147out:
7148 return status;
7149}
7150
7151/*
7152 * Decode LAYOUTGET response
7153 */
7154static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7155 struct xdr_stream *xdr,
7156 struct nfs4_layoutget_res *res)
7157{
7158 struct compound_hdr hdr;
7159 int status;
7160
7161 status = decode_compound_hdr(xdr, &hdr);
7162 if (status)
7163 goto out;
7164 status = decode_sequence(xdr, &res->seq_res, rqstp);
7165 if (status)
7166 goto out;
7167 status = decode_putfh(xdr);
7168 if (status)
7169 goto out;
7170 status = decode_layoutget(xdr, rqstp, res);
7171out:
7172 return status;
7173}
7174
7175/*
7176 * Decode LAYOUTRETURN response
7177 */
7178static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7179 struct xdr_stream *xdr,
7180 struct nfs4_layoutreturn_res *res)
7181{
7182 struct compound_hdr hdr;
7183 int status;
7184
7185 status = decode_compound_hdr(xdr, &hdr);
7186 if (status)
7187 goto out;
7188 status = decode_sequence(xdr, &res->seq_res, rqstp);
7189 if (status)
7190 goto out;
7191 status = decode_putfh(xdr);
7192 if (status)
7193 goto out;
7194 status = decode_layoutreturn(xdr, res);
7195out:
7196 return status;
7197}
7198
7199/*
7200 * Decode LAYOUTCOMMIT response
7201 */
7202static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7203 struct xdr_stream *xdr,
7204 struct nfs4_layoutcommit_res *res)
7205{
7206 struct compound_hdr hdr;
7207 int status;
7208
7209 status = decode_compound_hdr(xdr, &hdr);
7210 if (status)
7211 goto out;
7212 status = decode_sequence(xdr, &res->seq_res, rqstp);
7213 if (status)
7214 goto out;
7215 status = decode_putfh(xdr);
7216 if (status)
7217 goto out;
7218 status = decode_layoutcommit(xdr, rqstp, res);
7219 if (status)
7220 goto out;
7221 decode_getfattr(xdr, res->fattr, res->server);
7222out:
7223 return status;
7224}
7225
7226/*
7227 * Decode SECINFO_NO_NAME response
7228 */
7229static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7230 struct xdr_stream *xdr,
7231 struct nfs4_secinfo_res *res)
7232{
7233 struct compound_hdr hdr;
7234 int status;
7235
7236 status = decode_compound_hdr(xdr, &hdr);
7237 if (status)
7238 goto out;
7239 status = decode_sequence(xdr, &res->seq_res, rqstp);
7240 if (status)
7241 goto out;
7242 status = decode_putrootfh(xdr);
7243 if (status)
7244 goto out;
7245 status = decode_secinfo_no_name(xdr, res);
7246out:
7247 return status;
7248}
7249
7250/*
7251 * Decode TEST_STATEID response
7252 */
7253static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7254 struct xdr_stream *xdr,
7255 struct nfs41_test_stateid_res *res)
7256{
7257 struct compound_hdr hdr;
7258 int status;
7259
7260 status = decode_compound_hdr(xdr, &hdr);
7261 if (status)
7262 goto out;
7263 status = decode_sequence(xdr, &res->seq_res, rqstp);
7264 if (status)
7265 goto out;
7266 status = decode_test_stateid(xdr, res);
7267out:
7268 return status;
7269}
7270
7271/*
7272 * Decode FREE_STATEID response
7273 */
7274static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7275 struct xdr_stream *xdr,
7276 struct nfs41_free_stateid_res *res)
7277{
7278 struct compound_hdr hdr;
7279 int status;
7280
7281 status = decode_compound_hdr(xdr, &hdr);
7282 if (status)
7283 goto out;
7284 status = decode_sequence(xdr, &res->seq_res, rqstp);
7285 if (status)
7286 goto out;
7287 status = decode_free_stateid(xdr, res);
7288out:
7289 return status;
7290}
7291#endif /* CONFIG_NFS_V4_1 */
7292
7293/**
7294 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7295 * the local page cache.
7296 * @xdr: XDR stream where entry resides
7297 * @entry: buffer to fill in with entry data
7298 * @plus: boolean indicating whether this should be a readdirplus entry
7299 *
7300 * Returns zero if successful, otherwise a negative errno value is
7301 * returned.
7302 *
7303 * This function is not invoked during READDIR reply decoding, but
7304 * rather whenever an application invokes the getdents(2) system call
7305 * on a directory already in our cache.
7306 */
7307int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7308 int plus)
7309{
7310 unsigned int savep;
7311 uint32_t bitmap[3] = {0};
7312 uint32_t len;
7313 __be32 *p = xdr_inline_decode(xdr, 4);
7314 if (unlikely(!p))
7315 goto out_overflow;
7316 if (*p == xdr_zero) {
7317 p = xdr_inline_decode(xdr, 4);
7318 if (unlikely(!p))
7319 goto out_overflow;
7320 if (*p == xdr_zero)
7321 return -EAGAIN;
7322 entry->eof = 1;
7323 return -EBADCOOKIE;
7324 }
7325
7326 p = xdr_inline_decode(xdr, 12);
7327 if (unlikely(!p))
7328 goto out_overflow;
7329 entry->prev_cookie = entry->cookie;
7330 p = xdr_decode_hyper(p, &entry->cookie);
7331 entry->len = be32_to_cpup(p);
7332
7333 p = xdr_inline_decode(xdr, entry->len);
7334 if (unlikely(!p))
7335 goto out_overflow;
7336 entry->name = (const char *) p;
7337
7338 /*
7339 * In case the server doesn't return an inode number,
7340 * we fake one here. (We don't use inode number 0,
7341 * since glibc seems to choke on it...)
7342 */
7343 entry->ino = 1;
7344 entry->fattr->valid = 0;
7345
7346 if (decode_attr_bitmap(xdr, bitmap) < 0)
7347 goto out_overflow;
7348
7349 if (decode_attr_length(xdr, &len, &savep) < 0)
7350 goto out_overflow;
7351
7352 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7353 NULL, entry->label, entry->server) < 0)
7354 goto out_overflow;
7355 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7356 entry->ino = entry->fattr->mounted_on_fileid;
7357 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7358 entry->ino = entry->fattr->fileid;
7359
7360 entry->d_type = DT_UNKNOWN;
7361 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7362 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7363
7364 return 0;
7365
7366out_overflow:
7367 print_overflow_msg(__func__, xdr);
7368 return -EAGAIN;
7369}
7370
7371/*
7372 * We need to translate between nfs status return values and
7373 * the local errno values which may not be the same.
7374 */
7375static struct {
7376 int stat;
7377 int errno;
7378} nfs_errtbl[] = {
7379 { NFS4_OK, 0 },
7380 { NFS4ERR_PERM, -EPERM },
7381 { NFS4ERR_NOENT, -ENOENT },
7382 { NFS4ERR_IO, -errno_NFSERR_IO},
7383 { NFS4ERR_NXIO, -ENXIO },
7384 { NFS4ERR_ACCESS, -EACCES },
7385 { NFS4ERR_EXIST, -EEXIST },
7386 { NFS4ERR_XDEV, -EXDEV },
7387 { NFS4ERR_NOTDIR, -ENOTDIR },
7388 { NFS4ERR_ISDIR, -EISDIR },
7389 { NFS4ERR_INVAL, -EINVAL },
7390 { NFS4ERR_FBIG, -EFBIG },
7391 { NFS4ERR_NOSPC, -ENOSPC },
7392 { NFS4ERR_ROFS, -EROFS },
7393 { NFS4ERR_MLINK, -EMLINK },
7394 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7395 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7396 { NFS4ERR_DQUOT, -EDQUOT },
7397 { NFS4ERR_STALE, -ESTALE },
7398 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7399 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7400 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7401 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7402 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7403 { NFS4ERR_BADTYPE, -EBADTYPE },
7404 { NFS4ERR_LOCKED, -EAGAIN },
7405 { NFS4ERR_SYMLINK, -ELOOP },
7406 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7407 { NFS4ERR_DEADLOCK, -EDEADLK },
7408 { -1, -EIO }
7409};
7410
7411/*
7412 * Convert an NFS error code to a local one.
7413 * This one is used jointly by NFSv2 and NFSv3.
7414 */
7415static int
7416nfs4_stat_to_errno(int stat)
7417{
7418 int i;
7419 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7420 if (nfs_errtbl[i].stat == stat)
7421 return nfs_errtbl[i].errno;
7422 }
7423 if (stat <= 10000 || stat > 10100) {
7424 /* The server is looney tunes. */
7425 return -EREMOTEIO;
7426 }
7427 /* If we cannot translate the error, the recovery routines should
7428 * handle it.
7429 * Note: remaining NFSv4 error codes have values > 10000, so should
7430 * not conflict with native Linux error codes.
7431 */
7432 return -stat;
7433}
7434
7435#ifdef CONFIG_NFS_V4_2
7436#include "nfs42xdr.c"
7437#endif /* CONFIG_NFS_V4_2 */
7438
7439#define PROC(proc, argtype, restype) \
7440[NFSPROC4_CLNT_##proc] = { \
7441 .p_proc = NFSPROC4_COMPOUND, \
7442 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7443 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7444 .p_arglen = NFS4_##argtype##_sz, \
7445 .p_replen = NFS4_##restype##_sz, \
7446 .p_statidx = NFSPROC4_CLNT_##proc, \
7447 .p_name = #proc, \
7448}
7449
7450#define STUB(proc) \
7451[NFSPROC4_CLNT_##proc] = { \
7452 .p_name = #proc, \
7453}
7454
7455struct rpc_procinfo nfs4_procedures[] = {
7456 PROC(READ, enc_read, dec_read),
7457 PROC(WRITE, enc_write, dec_write),
7458 PROC(COMMIT, enc_commit, dec_commit),
7459 PROC(OPEN, enc_open, dec_open),
7460 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7461 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7462 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7463 PROC(CLOSE, enc_close, dec_close),
7464 PROC(SETATTR, enc_setattr, dec_setattr),
7465 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7466 PROC(RENEW, enc_renew, dec_renew),
7467 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7468 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7469 PROC(LOCK, enc_lock, dec_lock),
7470 PROC(LOCKT, enc_lockt, dec_lockt),
7471 PROC(LOCKU, enc_locku, dec_locku),
7472 PROC(ACCESS, enc_access, dec_access),
7473 PROC(GETATTR, enc_getattr, dec_getattr),
7474 PROC(LOOKUP, enc_lookup, dec_lookup),
7475 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7476 PROC(REMOVE, enc_remove, dec_remove),
7477 PROC(RENAME, enc_rename, dec_rename),
7478 PROC(LINK, enc_link, dec_link),
7479 PROC(SYMLINK, enc_symlink, dec_symlink),
7480 PROC(CREATE, enc_create, dec_create),
7481 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7482 PROC(STATFS, enc_statfs, dec_statfs),
7483 PROC(READLINK, enc_readlink, dec_readlink),
7484 PROC(READDIR, enc_readdir, dec_readdir),
7485 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7486 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7487 PROC(GETACL, enc_getacl, dec_getacl),
7488 PROC(SETACL, enc_setacl, dec_setacl),
7489 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7490 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7491 PROC(SECINFO, enc_secinfo, dec_secinfo),
7492 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7493#if defined(CONFIG_NFS_V4_1)
7494 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7495 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7496 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7497 PROC(SEQUENCE, enc_sequence, dec_sequence),
7498 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7499 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7500 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7501 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7502 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7503 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7504 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7505 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7506 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7507 STUB(GETDEVICELIST),
7508 PROC(BIND_CONN_TO_SESSION,
7509 enc_bind_conn_to_session, dec_bind_conn_to_session),
7510 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7511#endif /* CONFIG_NFS_V4_1 */
7512#ifdef CONFIG_NFS_V4_2
7513 PROC(SEEK, enc_seek, dec_seek),
7514 PROC(ALLOCATE, enc_allocate, dec_allocate),
7515 PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
7516 PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7517 PROC(CLONE, enc_clone, dec_clone),
7518#endif /* CONFIG_NFS_V4_2 */
7519};
7520
7521const struct rpc_version nfs_version4 = {
7522 .number = 4,
7523 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7524 .procs = nfs4_procedures
7525};
7526
7527/*
7528 * Local variables:
7529 * c-basic-offset: 8
7530 * End:
7531 */