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powerpc/pseries: Introduce pSeries_reconfig_notify()
[linux-2.6.git] / fs / nfs / nfs4xdr.c
blobd869a5e5464b46cf0276e8df3466dcfafd83acda
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
63 static 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 3
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 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 15)
117 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
118 #define decode_renew_maxsz (op_decode_hdr_maxsz)
119 #define encode_setclientid_maxsz \
120 (op_encode_hdr_maxsz + \
121 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
122 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
123 1 /* sc_prog */ + \
124 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
125 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
126 1) /* sc_cb_ident */
127 #define decode_setclientid_maxsz \
128 (op_decode_hdr_maxsz + \
129 2 + \
130 1024) /* large value for CLID_INUSE */
131 #define encode_setclientid_confirm_maxsz \
132 (op_encode_hdr_maxsz + \
133 3 + (NFS4_VERIFIER_SIZE >> 2))
134 #define decode_setclientid_confirm_maxsz \
135 (op_decode_hdr_maxsz)
136 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
137 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
138 #define encode_share_access_maxsz \
139 (2)
140 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
141 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
142 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
143 #define encode_open_maxsz (op_encode_hdr_maxsz + \
144 2 + encode_share_access_maxsz + 2 + \
145 open_owner_id_maxsz + \
146 encode_opentype_maxsz + \
147 encode_claim_null_maxsz)
148 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
149 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
150 decode_ace_maxsz)
151 #define decode_change_info_maxsz (5)
152 #define decode_open_maxsz (op_decode_hdr_maxsz + \
153 decode_stateid_maxsz + \
154 decode_change_info_maxsz + 1 + \
155 nfs4_fattr_bitmap_maxsz + \
156 decode_delegation_maxsz)
157 #define encode_open_confirm_maxsz \
158 (op_encode_hdr_maxsz + \
159 encode_stateid_maxsz + 1)
160 #define decode_open_confirm_maxsz \
161 (op_decode_hdr_maxsz + \
162 decode_stateid_maxsz)
163 #define encode_open_downgrade_maxsz \
164 (op_encode_hdr_maxsz + \
165 encode_stateid_maxsz + 1 + \
166 encode_share_access_maxsz)
167 #define decode_open_downgrade_maxsz \
168 (op_decode_hdr_maxsz + \
169 decode_stateid_maxsz)
170 #define encode_close_maxsz (op_encode_hdr_maxsz + \
171 1 + encode_stateid_maxsz)
172 #define decode_close_maxsz (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz)
174 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
175 encode_stateid_maxsz + \
176 encode_attrs_maxsz)
177 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
178 nfs4_fattr_bitmap_maxsz)
179 #define encode_read_maxsz (op_encode_hdr_maxsz + \
180 encode_stateid_maxsz + 3)
181 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
182 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
183 2 + encode_verifier_maxsz + 5)
184 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
185 decode_verifier_maxsz)
186 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
187 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
188 #define encode_write_maxsz (op_encode_hdr_maxsz + \
189 encode_stateid_maxsz + 4)
190 #define decode_write_maxsz (op_decode_hdr_maxsz + \
191 2 + decode_verifier_maxsz)
192 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
193 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
194 decode_verifier_maxsz)
195 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
196 nfs4_name_maxsz)
197 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
198 decode_change_info_maxsz)
199 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
200 2 * nfs4_name_maxsz)
201 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
202 decode_change_info_maxsz + \
203 decode_change_info_maxsz)
204 #define encode_link_maxsz (op_encode_hdr_maxsz + \
205 nfs4_name_maxsz)
206 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
207 #define encode_lockowner_maxsz (7)
208 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
209 7 + \
210 1 + encode_stateid_maxsz + 1 + \
211 encode_lockowner_maxsz)
212 #define decode_lock_denied_maxsz \
213 (8 + decode_lockowner_maxsz)
214 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
215 decode_lock_denied_maxsz)
216 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
217 encode_lockowner_maxsz)
218 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
219 decode_lock_denied_maxsz)
220 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
221 encode_stateid_maxsz + \
222 4)
223 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
224 decode_stateid_maxsz)
225 #define encode_release_lockowner_maxsz \
226 (op_encode_hdr_maxsz + \
227 encode_lockowner_maxsz)
228 #define decode_release_lockowner_maxsz \
229 (op_decode_hdr_maxsz)
230 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
231 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
232 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
233 1 + nfs4_name_maxsz + \
234 1 + \
235 nfs4_fattr_maxsz)
236 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
237 #define encode_create_maxsz (op_encode_hdr_maxsz + \
238 1 + 2 + nfs4_name_maxsz + \
239 encode_attrs_maxsz)
240 #define decode_create_maxsz (op_decode_hdr_maxsz + \
241 decode_change_info_maxsz + \
242 nfs4_fattr_bitmap_maxsz)
243 #define encode_statfs_maxsz (encode_getattr_maxsz)
244 #define decode_statfs_maxsz (decode_getattr_maxsz)
245 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
246 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
247 #define encode_getacl_maxsz (encode_getattr_maxsz)
248 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
249 nfs4_fattr_bitmap_maxsz + 1)
250 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
251 encode_stateid_maxsz + 3)
252 #define decode_setacl_maxsz (decode_setattr_maxsz)
253 #define encode_fs_locations_maxsz \
254 (encode_getattr_maxsz)
255 #define decode_fs_locations_maxsz \
256 (0)
257 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
258 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 4 + (NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)))
259
260 #if defined(CONFIG_NFS_V4_1)
261 #define NFS4_MAX_MACHINE_NAME_LEN (64)
262
263 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
264 encode_verifier_maxsz + \
265 1 /* co_ownerid.len */ + \
266 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
267 1 /* flags */ + \
268 1 /* spa_how */ + \
269 0 /* SP4_NONE (for now) */ + \
270 1 /* zero implemetation id array */)
271 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
272 2 /* eir_clientid */ + \
273 1 /* eir_sequenceid */ + \
274 1 /* eir_flags */ + \
275 1 /* spr_how */ + \
276 0 /* SP4_NONE (for now) */ + \
277 2 /* eir_server_owner.so_minor_id */ + \
278 /* eir_server_owner.so_major_id<> */ \
279 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
280 /* eir_server_scope<> */ \
281 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
282 1 /* eir_server_impl_id array length */ + \
283 0 /* ignored eir_server_impl_id contents */)
284 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
285 #define decode_channel_attrs_maxsz (6 + \
286 1 /* ca_rdma_ird.len */ + \
287 1 /* ca_rdma_ird */)
288 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
289 2 /* csa_clientid */ + \
290 1 /* csa_sequence */ + \
291 1 /* csa_flags */ + \
292 encode_channel_attrs_maxsz + \
293 encode_channel_attrs_maxsz + \
294 1 /* csa_cb_program */ + \
295 1 /* csa_sec_parms.len (1) */ + \
296 1 /* cb_secflavor (AUTH_SYS) */ + \
297 1 /* stamp */ + \
298 1 /* machinename.len */ + \
299 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
300 1 /* uid */ + \
301 1 /* gid */ + \
302 1 /* gids.len (0) */)
303 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
304 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
305 1 /* csr_sequence */ + \
306 1 /* csr_flags */ + \
307 decode_channel_attrs_maxsz + \
308 decode_channel_attrs_maxsz)
309 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
310 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
311 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
312 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
313 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
314 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
315 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
316 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
317 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
318 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
319 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
320 1 /* layout type */ + \
321 1 /* opaque devaddr4 length */ + \
322 /* devaddr4 payload is read into page */ \
323 1 /* notification bitmap length */ + \
324 1 /* notification bitmap */)
325 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
326 encode_stateid_maxsz)
327 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
328 decode_stateid_maxsz + \
329 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
330 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
331 2 /* offset */ + \
332 2 /* length */ + \
333 1 /* reclaim */ + \
334 encode_stateid_maxsz + \
335 1 /* new offset (true) */ + \
336 2 /* last byte written */ + \
337 1 /* nt_timechanged (false) */ + \
338 1 /* layoutupdate4 layout type */ + \
339 1 /* NULL filelayout layoutupdate4 payload */)
340 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
341 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
342 encode_stateid_maxsz + \
343 1 /* FIXME: opaque lrf_body always empty at the moment */)
344 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
345 1 + decode_stateid_maxsz)
346 #else /* CONFIG_NFS_V4_1 */
347 #define encode_sequence_maxsz 0
348 #define decode_sequence_maxsz 0
349 #endif /* CONFIG_NFS_V4_1 */
350
351 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
352 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
353 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
354 encode_sequence_maxsz + \
355 encode_putfh_maxsz + \
356 encode_read_maxsz)
357 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
358 decode_sequence_maxsz + \
359 decode_putfh_maxsz + \
360 decode_read_maxsz)
361 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
362 encode_sequence_maxsz + \
363 encode_putfh_maxsz + \
364 encode_readlink_maxsz)
365 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
366 decode_sequence_maxsz + \
367 decode_putfh_maxsz + \
368 decode_readlink_maxsz)
369 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
370 encode_sequence_maxsz + \
371 encode_putfh_maxsz + \
372 encode_readdir_maxsz)
373 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
374 decode_sequence_maxsz + \
375 decode_putfh_maxsz + \
376 decode_readdir_maxsz)
377 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
378 encode_sequence_maxsz + \
379 encode_putfh_maxsz + \
380 encode_write_maxsz + \
381 encode_getattr_maxsz)
382 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
383 decode_sequence_maxsz + \
384 decode_putfh_maxsz + \
385 decode_write_maxsz + \
386 decode_getattr_maxsz)
387 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
388 encode_sequence_maxsz + \
389 encode_putfh_maxsz + \
390 encode_commit_maxsz + \
391 encode_getattr_maxsz)
392 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
393 decode_sequence_maxsz + \
394 decode_putfh_maxsz + \
395 decode_commit_maxsz + \
396 decode_getattr_maxsz)
397 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
398 encode_sequence_maxsz + \
399 encode_putfh_maxsz + \
400 encode_savefh_maxsz + \
401 encode_open_maxsz + \
402 encode_getfh_maxsz + \
403 encode_getattr_maxsz + \
404 encode_restorefh_maxsz + \
405 encode_getattr_maxsz)
406 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
407 decode_sequence_maxsz + \
408 decode_putfh_maxsz + \
409 decode_savefh_maxsz + \
410 decode_open_maxsz + \
411 decode_getfh_maxsz + \
412 decode_getattr_maxsz + \
413 decode_restorefh_maxsz + \
414 decode_getattr_maxsz)
415 #define NFS4_enc_open_confirm_sz \
416 (compound_encode_hdr_maxsz + \
417 encode_putfh_maxsz + \
418 encode_open_confirm_maxsz)
419 #define NFS4_dec_open_confirm_sz \
420 (compound_decode_hdr_maxsz + \
421 decode_putfh_maxsz + \
422 decode_open_confirm_maxsz)
423 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
424 encode_sequence_maxsz + \
425 encode_putfh_maxsz + \
426 encode_open_maxsz + \
427 encode_getattr_maxsz)
428 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
429 decode_sequence_maxsz + \
430 decode_putfh_maxsz + \
431 decode_open_maxsz + \
432 decode_getattr_maxsz)
433 #define NFS4_enc_open_downgrade_sz \
434 (compound_encode_hdr_maxsz + \
435 encode_sequence_maxsz + \
436 encode_putfh_maxsz + \
437 encode_open_downgrade_maxsz + \
438 encode_getattr_maxsz)
439 #define NFS4_dec_open_downgrade_sz \
440 (compound_decode_hdr_maxsz + \
441 decode_sequence_maxsz + \
442 decode_putfh_maxsz + \
443 decode_open_downgrade_maxsz + \
444 decode_getattr_maxsz)
445 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
446 encode_sequence_maxsz + \
447 encode_putfh_maxsz + \
448 encode_close_maxsz + \
449 encode_getattr_maxsz)
450 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
451 decode_sequence_maxsz + \
452 decode_putfh_maxsz + \
453 decode_close_maxsz + \
454 decode_getattr_maxsz)
455 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
456 encode_sequence_maxsz + \
457 encode_putfh_maxsz + \
458 encode_setattr_maxsz + \
459 encode_getattr_maxsz)
460 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
461 decode_sequence_maxsz + \
462 decode_putfh_maxsz + \
463 decode_setattr_maxsz + \
464 decode_getattr_maxsz)
465 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
466 encode_sequence_maxsz + \
467 encode_putfh_maxsz + \
468 encode_fsinfo_maxsz)
469 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
470 decode_sequence_maxsz + \
471 decode_putfh_maxsz + \
472 decode_fsinfo_maxsz)
473 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
474 encode_renew_maxsz)
475 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
476 decode_renew_maxsz)
477 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
478 encode_setclientid_maxsz)
479 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
480 decode_setclientid_maxsz)
481 #define NFS4_enc_setclientid_confirm_sz \
482 (compound_encode_hdr_maxsz + \
483 encode_setclientid_confirm_maxsz + \
484 encode_putrootfh_maxsz + \
485 encode_fsinfo_maxsz)
486 #define NFS4_dec_setclientid_confirm_sz \
487 (compound_decode_hdr_maxsz + \
488 decode_setclientid_confirm_maxsz + \
489 decode_putrootfh_maxsz + \
490 decode_fsinfo_maxsz)
491 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
492 encode_sequence_maxsz + \
493 encode_putfh_maxsz + \
494 encode_lock_maxsz)
495 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
496 decode_sequence_maxsz + \
497 decode_putfh_maxsz + \
498 decode_lock_maxsz)
499 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
500 encode_sequence_maxsz + \
501 encode_putfh_maxsz + \
502 encode_lockt_maxsz)
503 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_lockt_maxsz)
507 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
508 encode_sequence_maxsz + \
509 encode_putfh_maxsz + \
510 encode_locku_maxsz)
511 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
512 decode_sequence_maxsz + \
513 decode_putfh_maxsz + \
514 decode_locku_maxsz)
515 #define NFS4_enc_release_lockowner_sz \
516 (compound_encode_hdr_maxsz + \
517 encode_lockowner_maxsz)
518 #define NFS4_dec_release_lockowner_sz \
519 (compound_decode_hdr_maxsz + \
520 decode_lockowner_maxsz)
521 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
522 encode_sequence_maxsz + \
523 encode_putfh_maxsz + \
524 encode_access_maxsz + \
525 encode_getattr_maxsz)
526 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
527 decode_sequence_maxsz + \
528 decode_putfh_maxsz + \
529 decode_access_maxsz + \
530 decode_getattr_maxsz)
531 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
532 encode_sequence_maxsz + \
533 encode_putfh_maxsz + \
534 encode_getattr_maxsz)
535 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
536 decode_sequence_maxsz + \
537 decode_putfh_maxsz + \
538 decode_getattr_maxsz)
539 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
540 encode_sequence_maxsz + \
541 encode_putfh_maxsz + \
542 encode_lookup_maxsz + \
543 encode_getattr_maxsz + \
544 encode_getfh_maxsz)
545 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
546 decode_sequence_maxsz + \
547 decode_putfh_maxsz + \
548 decode_lookup_maxsz + \
549 decode_getattr_maxsz + \
550 decode_getfh_maxsz)
551 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
552 encode_sequence_maxsz + \
553 encode_putrootfh_maxsz + \
554 encode_getattr_maxsz + \
555 encode_getfh_maxsz)
556 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
557 decode_sequence_maxsz + \
558 decode_putrootfh_maxsz + \
559 decode_getattr_maxsz + \
560 decode_getfh_maxsz)
561 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
562 encode_sequence_maxsz + \
563 encode_putfh_maxsz + \
564 encode_remove_maxsz + \
565 encode_getattr_maxsz)
566 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
567 decode_sequence_maxsz + \
568 decode_putfh_maxsz + \
569 decode_remove_maxsz + \
570 decode_getattr_maxsz)
571 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
572 encode_sequence_maxsz + \
573 encode_putfh_maxsz + \
574 encode_savefh_maxsz + \
575 encode_putfh_maxsz + \
576 encode_rename_maxsz + \
577 encode_getattr_maxsz + \
578 encode_restorefh_maxsz + \
579 encode_getattr_maxsz)
580 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
581 decode_sequence_maxsz + \
582 decode_putfh_maxsz + \
583 decode_savefh_maxsz + \
584 decode_putfh_maxsz + \
585 decode_rename_maxsz + \
586 decode_getattr_maxsz + \
587 decode_restorefh_maxsz + \
588 decode_getattr_maxsz)
589 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_savefh_maxsz + \
593 encode_putfh_maxsz + \
594 encode_link_maxsz + \
595 decode_getattr_maxsz + \
596 encode_restorefh_maxsz + \
597 decode_getattr_maxsz)
598 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
599 decode_sequence_maxsz + \
600 decode_putfh_maxsz + \
601 decode_savefh_maxsz + \
602 decode_putfh_maxsz + \
603 decode_link_maxsz + \
604 decode_getattr_maxsz + \
605 decode_restorefh_maxsz + \
606 decode_getattr_maxsz)
607 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
608 encode_sequence_maxsz + \
609 encode_putfh_maxsz + \
610 encode_symlink_maxsz + \
611 encode_getattr_maxsz + \
612 encode_getfh_maxsz)
613 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
614 decode_sequence_maxsz + \
615 decode_putfh_maxsz + \
616 decode_symlink_maxsz + \
617 decode_getattr_maxsz + \
618 decode_getfh_maxsz)
619 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putfh_maxsz + \
622 encode_savefh_maxsz + \
623 encode_create_maxsz + \
624 encode_getfh_maxsz + \
625 encode_getattr_maxsz + \
626 encode_restorefh_maxsz + \
627 encode_getattr_maxsz)
628 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
629 decode_sequence_maxsz + \
630 decode_putfh_maxsz + \
631 decode_savefh_maxsz + \
632 decode_create_maxsz + \
633 decode_getfh_maxsz + \
634 decode_getattr_maxsz + \
635 decode_restorefh_maxsz + \
636 decode_getattr_maxsz)
637 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
638 encode_sequence_maxsz + \
639 encode_putfh_maxsz + \
640 encode_getattr_maxsz)
641 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
642 decode_sequence_maxsz + \
643 decode_putfh_maxsz + \
644 decode_getattr_maxsz)
645 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
646 encode_sequence_maxsz + \
647 encode_putfh_maxsz + \
648 encode_statfs_maxsz)
649 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
652 decode_statfs_maxsz)
653 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
654 encode_sequence_maxsz + \
655 encode_putfh_maxsz + \
656 encode_getattr_maxsz)
657 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
658 decode_sequence_maxsz + \
659 decode_putfh_maxsz + \
660 decode_getattr_maxsz)
661 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
662 encode_sequence_maxsz + \
663 encode_putfh_maxsz + \
664 encode_delegreturn_maxsz + \
665 encode_getattr_maxsz)
666 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
667 decode_sequence_maxsz + \
668 decode_delegreturn_maxsz + \
669 decode_getattr_maxsz)
670 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
671 encode_sequence_maxsz + \
672 encode_putfh_maxsz + \
673 encode_getacl_maxsz)
674 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
675 decode_sequence_maxsz + \
676 decode_putfh_maxsz + \
677 decode_getacl_maxsz)
678 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
679 encode_sequence_maxsz + \
680 encode_putfh_maxsz + \
681 encode_setacl_maxsz)
682 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
683 decode_sequence_maxsz + \
684 decode_putfh_maxsz + \
685 decode_setacl_maxsz)
686 #define NFS4_enc_fs_locations_sz \
687 (compound_encode_hdr_maxsz + \
688 encode_sequence_maxsz + \
689 encode_putfh_maxsz + \
690 encode_lookup_maxsz + \
691 encode_fs_locations_maxsz)
692 #define NFS4_dec_fs_locations_sz \
693 (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_putfh_maxsz + \
696 decode_lookup_maxsz + \
697 decode_fs_locations_maxsz)
698 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
699 encode_sequence_maxsz + \
700 encode_putfh_maxsz + \
701 encode_secinfo_maxsz)
702 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
703 decode_sequence_maxsz + \
704 decode_putfh_maxsz + \
705 decode_secinfo_maxsz)
706 #if defined(CONFIG_NFS_V4_1)
707 #define NFS4_enc_exchange_id_sz \
708 (compound_encode_hdr_maxsz + \
709 encode_exchange_id_maxsz)
710 #define NFS4_dec_exchange_id_sz \
711 (compound_decode_hdr_maxsz + \
712 decode_exchange_id_maxsz)
713 #define NFS4_enc_create_session_sz \
714 (compound_encode_hdr_maxsz + \
715 encode_create_session_maxsz)
716 #define NFS4_dec_create_session_sz \
717 (compound_decode_hdr_maxsz + \
718 decode_create_session_maxsz)
719 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
720 encode_destroy_session_maxsz)
721 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
722 decode_destroy_session_maxsz)
723 #define NFS4_enc_sequence_sz \
724 (compound_decode_hdr_maxsz + \
725 encode_sequence_maxsz)
726 #define NFS4_dec_sequence_sz \
727 (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz)
729 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
730 encode_sequence_maxsz + \
731 encode_putrootfh_maxsz + \
732 encode_fsinfo_maxsz)
733 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
734 decode_sequence_maxsz + \
735 decode_putrootfh_maxsz + \
736 decode_fsinfo_maxsz)
737 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
738 encode_sequence_maxsz + \
739 encode_reclaim_complete_maxsz)
740 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
741 decode_sequence_maxsz + \
742 decode_reclaim_complete_maxsz)
743 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
744 encode_sequence_maxsz +\
745 encode_getdeviceinfo_maxsz)
746 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
747 decode_sequence_maxsz + \
748 decode_getdeviceinfo_maxsz)
749 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
750 encode_sequence_maxsz + \
751 encode_putfh_maxsz + \
752 encode_layoutget_maxsz)
753 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
754 decode_sequence_maxsz + \
755 decode_putfh_maxsz + \
756 decode_layoutget_maxsz)
757 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
758 encode_sequence_maxsz +\
759 encode_putfh_maxsz + \
760 encode_layoutcommit_maxsz + \
761 encode_getattr_maxsz)
762 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
763 decode_sequence_maxsz + \
764 decode_putfh_maxsz + \
765 decode_layoutcommit_maxsz + \
766 decode_getattr_maxsz)
767 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
768 encode_sequence_maxsz + \
769 encode_putfh_maxsz + \
770 encode_layoutreturn_maxsz)
771 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
772 decode_sequence_maxsz + \
773 decode_putfh_maxsz + \
774 decode_layoutreturn_maxsz)
775
776 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
777 compound_encode_hdr_maxsz +
778 encode_sequence_maxsz +
779 encode_putfh_maxsz +
780 encode_getattr_maxsz) *
781 XDR_UNIT);
782
783 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
784 compound_decode_hdr_maxsz +
785 decode_sequence_maxsz +
786 decode_putfh_maxsz) *
787 XDR_UNIT);
788 #endif /* CONFIG_NFS_V4_1 */
789
790 static const umode_t nfs_type2fmt[] = {
791 [NF4BAD] = 0,
792 [NF4REG] = S_IFREG,
793 [NF4DIR] = S_IFDIR,
794 [NF4BLK] = S_IFBLK,
795 [NF4CHR] = S_IFCHR,
796 [NF4LNK] = S_IFLNK,
797 [NF4SOCK] = S_IFSOCK,
798 [NF4FIFO] = S_IFIFO,
799 [NF4ATTRDIR] = 0,
800 [NF4NAMEDATTR] = 0,
801 };
802
803 struct compound_hdr {
804 int32_t status;
805 uint32_t nops;
806 __be32 * nops_p;
807 uint32_t taglen;
808 char * tag;
809 uint32_t replen; /* expected reply words */
810 u32 minorversion;
811 };
812
813 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
814 {
815 __be32 *p = xdr_reserve_space(xdr, nbytes);
816 BUG_ON(!p);
817 return p;
818 }
819
820 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
821 {
822 __be32 *p;
823
824 p = xdr_reserve_space(xdr, 4 + len);
825 BUG_ON(p == NULL);
826 xdr_encode_opaque(p, str, len);
827 }
828
829 static void encode_compound_hdr(struct xdr_stream *xdr,
830 struct rpc_rqst *req,
831 struct compound_hdr *hdr)
832 {
833 __be32 *p;
834 struct rpc_auth *auth = req->rq_cred->cr_auth;
835
836 /* initialize running count of expected bytes in reply.
837 * NOTE: the replied tag SHOULD be the same is the one sent,
838 * but this is not required as a MUST for the server to do so. */
839 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
840
841 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
842 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
843 p = reserve_space(xdr, 4 + hdr->taglen + 8);
844 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
845 *p++ = cpu_to_be32(hdr->minorversion);
846 hdr->nops_p = p;
847 *p = cpu_to_be32(hdr->nops);
848 }
849
850 static void encode_nops(struct compound_hdr *hdr)
851 {
852 BUG_ON(hdr->nops > NFS4_MAX_OPS);
853 *hdr->nops_p = htonl(hdr->nops);
854 }
855
856 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
857 {
858 __be32 *p;
859
860 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
861 BUG_ON(p == NULL);
862 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
863 }
864
865 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
866 {
867 char owner_name[IDMAP_NAMESZ];
868 char owner_group[IDMAP_NAMESZ];
869 int owner_namelen = 0;
870 int owner_grouplen = 0;
871 __be32 *p;
872 __be32 *q;
873 int len;
874 uint32_t bmval0 = 0;
875 uint32_t bmval1 = 0;
876
877 /*
878 * We reserve enough space to write the entire attribute buffer at once.
879 * In the worst-case, this would be
880 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
881 * = 36 bytes, plus any contribution from variable-length fields
882 * such as owner/group.
883 */
884 len = 16;
885
886 /* Sigh */
887 if (iap->ia_valid & ATTR_SIZE)
888 len += 8;
889 if (iap->ia_valid & ATTR_MODE)
890 len += 4;
891 if (iap->ia_valid & ATTR_UID) {
892 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
893 if (owner_namelen < 0) {
894 dprintk("nfs: couldn't resolve uid %d to string\n",
895 iap->ia_uid);
896 /* XXX */
897 strcpy(owner_name, "nobody");
898 owner_namelen = sizeof("nobody") - 1;
899 /* goto out; */
900 }
901 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
902 }
903 if (iap->ia_valid & ATTR_GID) {
904 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
905 if (owner_grouplen < 0) {
906 dprintk("nfs: couldn't resolve gid %d to string\n",
907 iap->ia_gid);
908 strcpy(owner_group, "nobody");
909 owner_grouplen = sizeof("nobody") - 1;
910 /* goto out; */
911 }
912 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
913 }
914 if (iap->ia_valid & ATTR_ATIME_SET)
915 len += 16;
916 else if (iap->ia_valid & ATTR_ATIME)
917 len += 4;
918 if (iap->ia_valid & ATTR_MTIME_SET)
919 len += 16;
920 else if (iap->ia_valid & ATTR_MTIME)
921 len += 4;
922 p = reserve_space(xdr, len);
923
924 /*
925 * We write the bitmap length now, but leave the bitmap and the attribute
926 * buffer length to be backfilled at the end of this routine.
927 */
928 *p++ = cpu_to_be32(2);
929 q = p;
930 p += 3;
931
932 if (iap->ia_valid & ATTR_SIZE) {
933 bmval0 |= FATTR4_WORD0_SIZE;
934 p = xdr_encode_hyper(p, iap->ia_size);
935 }
936 if (iap->ia_valid & ATTR_MODE) {
937 bmval1 |= FATTR4_WORD1_MODE;
938 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
939 }
940 if (iap->ia_valid & ATTR_UID) {
941 bmval1 |= FATTR4_WORD1_OWNER;
942 p = xdr_encode_opaque(p, owner_name, owner_namelen);
943 }
944 if (iap->ia_valid & ATTR_GID) {
945 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
946 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
947 }
948 if (iap->ia_valid & ATTR_ATIME_SET) {
949 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
950 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
951 *p++ = cpu_to_be32(0);
952 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
953 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
954 }
955 else if (iap->ia_valid & ATTR_ATIME) {
956 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
957 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
958 }
959 if (iap->ia_valid & ATTR_MTIME_SET) {
960 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
961 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
962 *p++ = cpu_to_be32(0);
963 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
964 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
965 }
966 else if (iap->ia_valid & ATTR_MTIME) {
967 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
968 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
969 }
970
971 /*
972 * Now we backfill the bitmap and the attribute buffer length.
973 */
974 if (len != ((char *)p - (char *)q) + 4) {
975 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
976 len, ((char *)p - (char *)q) + 4);
977 BUG();
978 }
979 len = (char *)p - (char *)q - 12;
980 *q++ = htonl(bmval0);
981 *q++ = htonl(bmval1);
982 *q = htonl(len);
983
984 /* out: */
985 }
986
987 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
988 {
989 __be32 *p;
990
991 p = reserve_space(xdr, 8);
992 *p++ = cpu_to_be32(OP_ACCESS);
993 *p = cpu_to_be32(access);
994 hdr->nops++;
995 hdr->replen += decode_access_maxsz;
996 }
997
998 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
999 {
1000 __be32 *p;
1001
1002 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
1003 *p++ = cpu_to_be32(OP_CLOSE);
1004 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1005 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1006 hdr->nops++;
1007 hdr->replen += decode_close_maxsz;
1008 }
1009
1010 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1011 {
1012 __be32 *p;
1013
1014 p = reserve_space(xdr, 16);
1015 *p++ = cpu_to_be32(OP_COMMIT);
1016 p = xdr_encode_hyper(p, args->offset);
1017 *p = cpu_to_be32(args->count);
1018 hdr->nops++;
1019 hdr->replen += decode_commit_maxsz;
1020 }
1021
1022 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1023 {
1024 __be32 *p;
1025
1026 p = reserve_space(xdr, 8);
1027 *p++ = cpu_to_be32(OP_CREATE);
1028 *p = cpu_to_be32(create->ftype);
1029
1030 switch (create->ftype) {
1031 case NF4LNK:
1032 p = reserve_space(xdr, 4);
1033 *p = cpu_to_be32(create->u.symlink.len);
1034 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1035 break;
1036
1037 case NF4BLK: case NF4CHR:
1038 p = reserve_space(xdr, 8);
1039 *p++ = cpu_to_be32(create->u.device.specdata1);
1040 *p = cpu_to_be32(create->u.device.specdata2);
1041 break;
1042
1043 default:
1044 break;
1045 }
1046
1047 encode_string(xdr, create->name->len, create->name->name);
1048 hdr->nops++;
1049 hdr->replen += decode_create_maxsz;
1050
1051 encode_attrs(xdr, create->attrs, create->server);
1052 }
1053
1054 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1055 {
1056 __be32 *p;
1057
1058 p = reserve_space(xdr, 12);
1059 *p++ = cpu_to_be32(OP_GETATTR);
1060 *p++ = cpu_to_be32(1);
1061 *p = cpu_to_be32(bitmap);
1062 hdr->nops++;
1063 hdr->replen += decode_getattr_maxsz;
1064 }
1065
1066 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1067 {
1068 __be32 *p;
1069
1070 p = reserve_space(xdr, 16);
1071 *p++ = cpu_to_be32(OP_GETATTR);
1072 *p++ = cpu_to_be32(2);
1073 *p++ = cpu_to_be32(bm0);
1074 *p = cpu_to_be32(bm1);
1075 hdr->nops++;
1076 hdr->replen += decode_getattr_maxsz;
1077 }
1078
1079 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1080 {
1081 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1082 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1083 }
1084
1085 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1086 {
1087 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
1088 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
1089 }
1090
1091 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1092 {
1093 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1094 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1095 }
1096
1097 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1098 {
1099 __be32 *p;
1100
1101 p = reserve_space(xdr, 4);
1102 *p = cpu_to_be32(OP_GETFH);
1103 hdr->nops++;
1104 hdr->replen += decode_getfh_maxsz;
1105 }
1106
1107 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1108 {
1109 __be32 *p;
1110
1111 p = reserve_space(xdr, 8 + name->len);
1112 *p++ = cpu_to_be32(OP_LINK);
1113 xdr_encode_opaque(p, name->name, name->len);
1114 hdr->nops++;
1115 hdr->replen += decode_link_maxsz;
1116 }
1117
1118 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1119 {
1120 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1121 return block ? NFS4_READW_LT : NFS4_READ_LT;
1122 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1123 }
1124
1125 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1126 {
1127 if (fl->fl_end == OFFSET_MAX)
1128 return ~(uint64_t)0;
1129 return fl->fl_end - fl->fl_start + 1;
1130 }
1131
1132 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1133 {
1134 __be32 *p;
1135
1136 p = reserve_space(xdr, 32);
1137 p = xdr_encode_hyper(p, lowner->clientid);
1138 *p++ = cpu_to_be32(20);
1139 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1140 *p++ = cpu_to_be32(lowner->s_dev);
1141 xdr_encode_hyper(p, lowner->id);
1142 }
1143
1144 /*
1145 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1146 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1147 */
1148 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1149 {
1150 __be32 *p;
1151
1152 p = reserve_space(xdr, 32);
1153 *p++ = cpu_to_be32(OP_LOCK);
1154 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1155 *p++ = cpu_to_be32(args->reclaim);
1156 p = xdr_encode_hyper(p, args->fl->fl_start);
1157 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1158 *p = cpu_to_be32(args->new_lock_owner);
1159 if (args->new_lock_owner){
1160 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1161 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1162 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1163 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1164 encode_lockowner(xdr, &args->lock_owner);
1165 }
1166 else {
1167 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1168 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1169 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1170 }
1171 hdr->nops++;
1172 hdr->replen += decode_lock_maxsz;
1173 }
1174
1175 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1176 {
1177 __be32 *p;
1178
1179 p = reserve_space(xdr, 24);
1180 *p++ = cpu_to_be32(OP_LOCKT);
1181 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1182 p = xdr_encode_hyper(p, args->fl->fl_start);
1183 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1184 encode_lockowner(xdr, &args->lock_owner);
1185 hdr->nops++;
1186 hdr->replen += decode_lockt_maxsz;
1187 }
1188
1189 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1190 {
1191 __be32 *p;
1192
1193 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1194 *p++ = cpu_to_be32(OP_LOCKU);
1195 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1196 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1197 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1198 p = xdr_encode_hyper(p, args->fl->fl_start);
1199 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1200 hdr->nops++;
1201 hdr->replen += decode_locku_maxsz;
1202 }
1203
1204 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1205 {
1206 __be32 *p;
1207
1208 p = reserve_space(xdr, 4);
1209 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1210 encode_lockowner(xdr, lowner);
1211 hdr->nops++;
1212 hdr->replen += decode_release_lockowner_maxsz;
1213 }
1214
1215 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1216 {
1217 int len = name->len;
1218 __be32 *p;
1219
1220 p = reserve_space(xdr, 8 + len);
1221 *p++ = cpu_to_be32(OP_LOOKUP);
1222 xdr_encode_opaque(p, name->name, len);
1223 hdr->nops++;
1224 hdr->replen += decode_lookup_maxsz;
1225 }
1226
1227 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1228 {
1229 __be32 *p;
1230
1231 p = reserve_space(xdr, 8);
1232 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1233 case FMODE_READ:
1234 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1235 break;
1236 case FMODE_WRITE:
1237 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1238 break;
1239 case FMODE_READ|FMODE_WRITE:
1240 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1241 break;
1242 default:
1243 *p++ = cpu_to_be32(0);
1244 }
1245 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1246 }
1247
1248 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1249 {
1250 __be32 *p;
1251 /*
1252 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1253 * owner 4 = 32
1254 */
1255 p = reserve_space(xdr, 8);
1256 *p++ = cpu_to_be32(OP_OPEN);
1257 *p = cpu_to_be32(arg->seqid->sequence->counter);
1258 encode_share_access(xdr, arg->fmode);
1259 p = reserve_space(xdr, 32);
1260 p = xdr_encode_hyper(p, arg->clientid);
1261 *p++ = cpu_to_be32(20);
1262 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1263 *p++ = cpu_to_be32(arg->server->s_dev);
1264 xdr_encode_hyper(p, arg->id);
1265 }
1266
1267 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1268 {
1269 __be32 *p;
1270 struct nfs_client *clp;
1271
1272 p = reserve_space(xdr, 4);
1273 switch(arg->open_flags & O_EXCL) {
1274 case 0:
1275 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1276 encode_attrs(xdr, arg->u.attrs, arg->server);
1277 break;
1278 default:
1279 clp = arg->server->nfs_client;
1280 if (clp->cl_mvops->minor_version > 0) {
1281 if (nfs4_has_persistent_session(clp)) {
1282 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1283 encode_attrs(xdr, arg->u.attrs, arg->server);
1284 } else {
1285 struct iattr dummy;
1286
1287 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1288 encode_nfs4_verifier(xdr, &arg->u.verifier);
1289 dummy.ia_valid = 0;
1290 encode_attrs(xdr, &dummy, arg->server);
1291 }
1292 } else {
1293 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1294 encode_nfs4_verifier(xdr, &arg->u.verifier);
1295 }
1296 }
1297 }
1298
1299 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1300 {
1301 __be32 *p;
1302
1303 p = reserve_space(xdr, 4);
1304 switch (arg->open_flags & O_CREAT) {
1305 case 0:
1306 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1307 break;
1308 default:
1309 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1310 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1311 encode_createmode(xdr, arg);
1312 }
1313 }
1314
1315 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1316 {
1317 __be32 *p;
1318
1319 p = reserve_space(xdr, 4);
1320 switch (delegation_type) {
1321 case 0:
1322 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1323 break;
1324 case FMODE_READ:
1325 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1326 break;
1327 case FMODE_WRITE|FMODE_READ:
1328 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1329 break;
1330 default:
1331 BUG();
1332 }
1333 }
1334
1335 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1336 {
1337 __be32 *p;
1338
1339 p = reserve_space(xdr, 4);
1340 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1341 encode_string(xdr, name->len, name->name);
1342 }
1343
1344 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1345 {
1346 __be32 *p;
1347
1348 p = reserve_space(xdr, 4);
1349 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1350 encode_delegation_type(xdr, type);
1351 }
1352
1353 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1354 {
1355 __be32 *p;
1356
1357 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1358 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1359 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1360 encode_string(xdr, name->len, name->name);
1361 }
1362
1363 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1364 {
1365 encode_openhdr(xdr, arg);
1366 encode_opentype(xdr, arg);
1367 switch (arg->claim) {
1368 case NFS4_OPEN_CLAIM_NULL:
1369 encode_claim_null(xdr, arg->name);
1370 break;
1371 case NFS4_OPEN_CLAIM_PREVIOUS:
1372 encode_claim_previous(xdr, arg->u.delegation_type);
1373 break;
1374 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1375 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1376 break;
1377 default:
1378 BUG();
1379 }
1380 hdr->nops++;
1381 hdr->replen += decode_open_maxsz;
1382 }
1383
1384 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1385 {
1386 __be32 *p;
1387
1388 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1389 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1390 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1391 *p = cpu_to_be32(arg->seqid->sequence->counter);
1392 hdr->nops++;
1393 hdr->replen += decode_open_confirm_maxsz;
1394 }
1395
1396 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1397 {
1398 __be32 *p;
1399
1400 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1401 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1402 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1403 *p = cpu_to_be32(arg->seqid->sequence->counter);
1404 encode_share_access(xdr, arg->fmode);
1405 hdr->nops++;
1406 hdr->replen += decode_open_downgrade_maxsz;
1407 }
1408
1409 static void
1410 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1411 {
1412 int len = fh->size;
1413 __be32 *p;
1414
1415 p = reserve_space(xdr, 8 + len);
1416 *p++ = cpu_to_be32(OP_PUTFH);
1417 xdr_encode_opaque(p, fh->data, len);
1418 hdr->nops++;
1419 hdr->replen += decode_putfh_maxsz;
1420 }
1421
1422 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1423 {
1424 __be32 *p;
1425
1426 p = reserve_space(xdr, 4);
1427 *p = cpu_to_be32(OP_PUTROOTFH);
1428 hdr->nops++;
1429 hdr->replen += decode_putrootfh_maxsz;
1430 }
1431
1432 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid)
1433 {
1434 nfs4_stateid stateid;
1435 __be32 *p;
1436
1437 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1438 if (ctx->state != NULL) {
1439 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
1440 if (zero_seqid)
1441 stateid.stateid.seqid = 0;
1442 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1443 } else
1444 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1445 }
1446
1447 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1448 {
1449 __be32 *p;
1450
1451 p = reserve_space(xdr, 4);
1452 *p = cpu_to_be32(OP_READ);
1453
1454 encode_stateid(xdr, args->context, args->lock_context,
1455 hdr->minorversion);
1456
1457 p = reserve_space(xdr, 12);
1458 p = xdr_encode_hyper(p, args->offset);
1459 *p = cpu_to_be32(args->count);
1460 hdr->nops++;
1461 hdr->replen += decode_read_maxsz;
1462 }
1463
1464 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1465 {
1466 uint32_t attrs[2] = {
1467 FATTR4_WORD0_RDATTR_ERROR,
1468 FATTR4_WORD1_MOUNTED_ON_FILEID,
1469 };
1470 uint32_t dircount = readdir->count >> 1;
1471 __be32 *p;
1472
1473 if (readdir->plus) {
1474 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1475 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1476 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1477 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1478 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1479 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1480 dircount >>= 1;
1481 }
1482 /* Use mounted_on_fileid only if the server supports it */
1483 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1484 attrs[0] |= FATTR4_WORD0_FILEID;
1485
1486 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1487 *p++ = cpu_to_be32(OP_READDIR);
1488 p = xdr_encode_hyper(p, readdir->cookie);
1489 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1490 *p++ = cpu_to_be32(dircount);
1491 *p++ = cpu_to_be32(readdir->count);
1492 *p++ = cpu_to_be32(2);
1493
1494 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1495 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1496 hdr->nops++;
1497 hdr->replen += decode_readdir_maxsz;
1498 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1499 __func__,
1500 (unsigned long long)readdir->cookie,
1501 ((u32 *)readdir->verifier.data)[0],
1502 ((u32 *)readdir->verifier.data)[1],
1503 attrs[0] & readdir->bitmask[0],
1504 attrs[1] & readdir->bitmask[1]);
1505 }
1506
1507 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1508 {
1509 __be32 *p;
1510
1511 p = reserve_space(xdr, 4);
1512 *p = cpu_to_be32(OP_READLINK);
1513 hdr->nops++;
1514 hdr->replen += decode_readlink_maxsz;
1515 }
1516
1517 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1518 {
1519 __be32 *p;
1520
1521 p = reserve_space(xdr, 8 + name->len);
1522 *p++ = cpu_to_be32(OP_REMOVE);
1523 xdr_encode_opaque(p, name->name, name->len);
1524 hdr->nops++;
1525 hdr->replen += decode_remove_maxsz;
1526 }
1527
1528 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1529 {
1530 __be32 *p;
1531
1532 p = reserve_space(xdr, 4);
1533 *p = cpu_to_be32(OP_RENAME);
1534 encode_string(xdr, oldname->len, oldname->name);
1535 encode_string(xdr, newname->len, newname->name);
1536 hdr->nops++;
1537 hdr->replen += decode_rename_maxsz;
1538 }
1539
1540 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1541 {
1542 __be32 *p;
1543
1544 p = reserve_space(xdr, 12);
1545 *p++ = cpu_to_be32(OP_RENEW);
1546 xdr_encode_hyper(p, client_stateid->cl_clientid);
1547 hdr->nops++;
1548 hdr->replen += decode_renew_maxsz;
1549 }
1550
1551 static void
1552 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1553 {
1554 __be32 *p;
1555
1556 p = reserve_space(xdr, 4);
1557 *p = cpu_to_be32(OP_RESTOREFH);
1558 hdr->nops++;
1559 hdr->replen += decode_restorefh_maxsz;
1560 }
1561
1562 static void
1563 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1564 {
1565 __be32 *p;
1566
1567 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1568 *p++ = cpu_to_be32(OP_SETATTR);
1569 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1570 p = reserve_space(xdr, 2*4);
1571 *p++ = cpu_to_be32(1);
1572 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1573 BUG_ON(arg->acl_len % 4);
1574 p = reserve_space(xdr, 4);
1575 *p = cpu_to_be32(arg->acl_len);
1576 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1577 hdr->nops++;
1578 hdr->replen += decode_setacl_maxsz;
1579 }
1580
1581 static void
1582 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1583 {
1584 __be32 *p;
1585
1586 p = reserve_space(xdr, 4);
1587 *p = cpu_to_be32(OP_SAVEFH);
1588 hdr->nops++;
1589 hdr->replen += decode_savefh_maxsz;
1590 }
1591
1592 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1593 {
1594 __be32 *p;
1595
1596 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1597 *p++ = cpu_to_be32(OP_SETATTR);
1598 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1599 hdr->nops++;
1600 hdr->replen += decode_setattr_maxsz;
1601 encode_attrs(xdr, arg->iap, server);
1602 }
1603
1604 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1605 {
1606 __be32 *p;
1607
1608 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1609 *p++ = cpu_to_be32(OP_SETCLIENTID);
1610 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1611
1612 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1613 p = reserve_space(xdr, 4);
1614 *p = cpu_to_be32(setclientid->sc_prog);
1615 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1616 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1617 p = reserve_space(xdr, 4);
1618 *p = cpu_to_be32(setclientid->sc_cb_ident);
1619 hdr->nops++;
1620 hdr->replen += decode_setclientid_maxsz;
1621 }
1622
1623 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1624 {
1625 __be32 *p;
1626
1627 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1628 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1629 p = xdr_encode_hyper(p, arg->clientid);
1630 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
1631 hdr->nops++;
1632 hdr->replen += decode_setclientid_confirm_maxsz;
1633 }
1634
1635 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1636 {
1637 __be32 *p;
1638
1639 p = reserve_space(xdr, 4);
1640 *p = cpu_to_be32(OP_WRITE);
1641
1642 encode_stateid(xdr, args->context, args->lock_context,
1643 hdr->minorversion);
1644
1645 p = reserve_space(xdr, 16);
1646 p = xdr_encode_hyper(p, args->offset);
1647 *p++ = cpu_to_be32(args->stable);
1648 *p = cpu_to_be32(args->count);
1649
1650 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1651 hdr->nops++;
1652 hdr->replen += decode_write_maxsz;
1653 }
1654
1655 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1656 {
1657 __be32 *p;
1658
1659 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1660
1661 *p++ = cpu_to_be32(OP_DELEGRETURN);
1662 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1663 hdr->nops++;
1664 hdr->replen += decode_delegreturn_maxsz;
1665 }
1666
1667 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1668 {
1669 int len = name->len;
1670 __be32 *p;
1671
1672 p = reserve_space(xdr, 8 + len);
1673 *p++ = cpu_to_be32(OP_SECINFO);
1674 xdr_encode_opaque(p, name->name, len);
1675 hdr->nops++;
1676 hdr->replen += decode_secinfo_maxsz;
1677 }
1678
1679 #if defined(CONFIG_NFS_V4_1)
1680 /* NFSv4.1 operations */
1681 static void encode_exchange_id(struct xdr_stream *xdr,
1682 struct nfs41_exchange_id_args *args,
1683 struct compound_hdr *hdr)
1684 {
1685 __be32 *p;
1686
1687 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1688 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1689 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1690
1691 encode_string(xdr, args->id_len, args->id);
1692
1693 p = reserve_space(xdr, 12);
1694 *p++ = cpu_to_be32(args->flags);
1695 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1696 *p = cpu_to_be32(0); /* zero length implementation id array */
1697 hdr->nops++;
1698 hdr->replen += decode_exchange_id_maxsz;
1699 }
1700
1701 static void encode_create_session(struct xdr_stream *xdr,
1702 struct nfs41_create_session_args *args,
1703 struct compound_hdr *hdr)
1704 {
1705 __be32 *p;
1706 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1707 uint32_t len;
1708 struct nfs_client *clp = args->client;
1709 u32 max_resp_sz_cached;
1710
1711 /*
1712 * Assumes OPEN is the biggest non-idempotent compound.
1713 * 2 is the verifier.
1714 */
1715 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1716 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1717
1718 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1719 clp->cl_ipaddr);
1720
1721 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1722 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1723 p = xdr_encode_hyper(p, clp->cl_clientid);
1724 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1725 *p++ = cpu_to_be32(args->flags); /*flags */
1726
1727 /* Fore Channel */
1728 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1729 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1730 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1731 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1732 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1733 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1734 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1735
1736 /* Back Channel */
1737 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1738 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1739 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1740 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1741 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1742 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1743 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1744
1745 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1746 *p++ = cpu_to_be32(1);
1747 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1748
1749 /* authsys_parms rfc1831 */
1750 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1751 p = xdr_encode_opaque(p, machine_name, len);
1752 *p++ = cpu_to_be32(0); /* UID */
1753 *p++ = cpu_to_be32(0); /* GID */
1754 *p = cpu_to_be32(0); /* No more gids */
1755 hdr->nops++;
1756 hdr->replen += decode_create_session_maxsz;
1757 }
1758
1759 static void encode_destroy_session(struct xdr_stream *xdr,
1760 struct nfs4_session *session,
1761 struct compound_hdr *hdr)
1762 {
1763 __be32 *p;
1764 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1765 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1766 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1767 hdr->nops++;
1768 hdr->replen += decode_destroy_session_maxsz;
1769 }
1770
1771 static void encode_reclaim_complete(struct xdr_stream *xdr,
1772 struct nfs41_reclaim_complete_args *args,
1773 struct compound_hdr *hdr)
1774 {
1775 __be32 *p;
1776
1777 p = reserve_space(xdr, 8);
1778 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1779 *p++ = cpu_to_be32(args->one_fs);
1780 hdr->nops++;
1781 hdr->replen += decode_reclaim_complete_maxsz;
1782 }
1783 #endif /* CONFIG_NFS_V4_1 */
1784
1785 static void encode_sequence(struct xdr_stream *xdr,
1786 const struct nfs4_sequence_args *args,
1787 struct compound_hdr *hdr)
1788 {
1789 #if defined(CONFIG_NFS_V4_1)
1790 struct nfs4_session *session = args->sa_session;
1791 struct nfs4_slot_table *tp;
1792 struct nfs4_slot *slot;
1793 __be32 *p;
1794
1795 if (!session)
1796 return;
1797
1798 tp = &session->fc_slot_table;
1799
1800 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1801 slot = tp->slots + args->sa_slotid;
1802
1803 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1804 *p++ = cpu_to_be32(OP_SEQUENCE);
1805
1806 /*
1807 * Sessionid + seqid + slotid + max slotid + cache_this
1808 */
1809 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1810 "max_slotid=%d cache_this=%d\n",
1811 __func__,
1812 ((u32 *)session->sess_id.data)[0],
1813 ((u32 *)session->sess_id.data)[1],
1814 ((u32 *)session->sess_id.data)[2],
1815 ((u32 *)session->sess_id.data)[3],
1816 slot->seq_nr, args->sa_slotid,
1817 tp->highest_used_slotid, args->sa_cache_this);
1818 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1819 *p++ = cpu_to_be32(slot->seq_nr);
1820 *p++ = cpu_to_be32(args->sa_slotid);
1821 *p++ = cpu_to_be32(tp->highest_used_slotid);
1822 *p = cpu_to_be32(args->sa_cache_this);
1823 hdr->nops++;
1824 hdr->replen += decode_sequence_maxsz;
1825 #endif /* CONFIG_NFS_V4_1 */
1826 }
1827
1828 #ifdef CONFIG_NFS_V4_1
1829 static void
1830 encode_getdeviceinfo(struct xdr_stream *xdr,
1831 const struct nfs4_getdeviceinfo_args *args,
1832 struct compound_hdr *hdr)
1833 {
1834 __be32 *p;
1835
1836 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE);
1837 *p++ = cpu_to_be32(OP_GETDEVICEINFO);
1838 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1839 NFS4_DEVICEID4_SIZE);
1840 *p++ = cpu_to_be32(args->pdev->layout_type);
1841 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1842 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1843 hdr->nops++;
1844 hdr->replen += decode_getdeviceinfo_maxsz;
1845 }
1846
1847 static void
1848 encode_layoutget(struct xdr_stream *xdr,
1849 const struct nfs4_layoutget_args *args,
1850 struct compound_hdr *hdr)
1851 {
1852 __be32 *p;
1853
1854 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1855 *p++ = cpu_to_be32(OP_LAYOUTGET);
1856 *p++ = cpu_to_be32(0); /* Signal layout available */
1857 *p++ = cpu_to_be32(args->type);
1858 *p++ = cpu_to_be32(args->range.iomode);
1859 p = xdr_encode_hyper(p, args->range.offset);
1860 p = xdr_encode_hyper(p, args->range.length);
1861 p = xdr_encode_hyper(p, args->minlength);
1862 p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
1863 *p = cpu_to_be32(args->maxcount);
1864
1865 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1866 __func__,
1867 args->type,
1868 args->range.iomode,
1869 (unsigned long)args->range.offset,
1870 (unsigned long)args->range.length,
1871 args->maxcount);
1872 hdr->nops++;
1873 hdr->replen += decode_layoutget_maxsz;
1874 }
1875
1876 static int
1877 encode_layoutcommit(struct xdr_stream *xdr,
1878 struct inode *inode,
1879 const struct nfs4_layoutcommit_args *args,
1880 struct compound_hdr *hdr)
1881 {
1882 __be32 *p;
1883
1884 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1885 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1886
1887 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1888 *p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
1889 /* Only whole file layouts */
1890 p = xdr_encode_hyper(p, 0); /* offset */
1891 p = xdr_encode_hyper(p, NFS4_MAX_UINT64); /* length */
1892 *p++ = cpu_to_be32(0); /* reclaim */
1893 p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE);
1894 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1895 p = xdr_encode_hyper(p, args->lastbytewritten);
1896 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1897 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1898
1899 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1900 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1901 NFS_I(inode)->layout, xdr, args);
1902 else {
1903 p = reserve_space(xdr, 4);
1904 *p = cpu_to_be32(0); /* no layout-type payload */
1905 }
1906
1907 hdr->nops++;
1908 hdr->replen += decode_layoutcommit_maxsz;
1909 return 0;
1910 }
1911
1912 static void
1913 encode_layoutreturn(struct xdr_stream *xdr,
1914 const struct nfs4_layoutreturn_args *args,
1915 struct compound_hdr *hdr)
1916 {
1917 __be32 *p;
1918
1919 p = reserve_space(xdr, 20);
1920 *p++ = cpu_to_be32(OP_LAYOUTRETURN);
1921 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1922 *p++ = cpu_to_be32(args->layout_type);
1923 *p++ = cpu_to_be32(IOMODE_ANY);
1924 *p = cpu_to_be32(RETURN_FILE);
1925 p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE);
1926 p = xdr_encode_hyper(p, 0);
1927 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1928 spin_lock(&args->inode->i_lock);
1929 xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
1930 spin_unlock(&args->inode->i_lock);
1931 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1932 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1933 NFS_I(args->inode)->layout, xdr, args);
1934 } else {
1935 p = reserve_space(xdr, 4);
1936 *p = cpu_to_be32(0);
1937 }
1938 hdr->nops++;
1939 hdr->replen += decode_layoutreturn_maxsz;
1940 }
1941 #endif /* CONFIG_NFS_V4_1 */
1942
1943 /*
1944 * END OF "GENERIC" ENCODE ROUTINES.
1945 */
1946
1947 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1948 {
1949 #if defined(CONFIG_NFS_V4_1)
1950 if (args->sa_session)
1951 return args->sa_session->clp->cl_mvops->minor_version;
1952 #endif /* CONFIG_NFS_V4_1 */
1953 return 0;
1954 }
1955
1956 /*
1957 * Encode an ACCESS request
1958 */
1959 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
1960 const struct nfs4_accessargs *args)
1961 {
1962 struct compound_hdr hdr = {
1963 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1964 };
1965
1966 encode_compound_hdr(xdr, req, &hdr);
1967 encode_sequence(xdr, &args->seq_args, &hdr);
1968 encode_putfh(xdr, args->fh, &hdr);
1969 encode_access(xdr, args->access, &hdr);
1970 encode_getfattr(xdr, args->bitmask, &hdr);
1971 encode_nops(&hdr);
1972 }
1973
1974 /*
1975 * Encode LOOKUP request
1976 */
1977 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
1978 const struct nfs4_lookup_arg *args)
1979 {
1980 struct compound_hdr hdr = {
1981 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1982 };
1983
1984 encode_compound_hdr(xdr, req, &hdr);
1985 encode_sequence(xdr, &args->seq_args, &hdr);
1986 encode_putfh(xdr, args->dir_fh, &hdr);
1987 encode_lookup(xdr, args->name, &hdr);
1988 encode_getfh(xdr, &hdr);
1989 encode_getfattr(xdr, args->bitmask, &hdr);
1990 encode_nops(&hdr);
1991 }
1992
1993 /*
1994 * Encode LOOKUP_ROOT request
1995 */
1996 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
1997 struct xdr_stream *xdr,
1998 const struct nfs4_lookup_root_arg *args)
1999 {
2000 struct compound_hdr hdr = {
2001 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2002 };
2003
2004 encode_compound_hdr(xdr, req, &hdr);
2005 encode_sequence(xdr, &args->seq_args, &hdr);
2006 encode_putrootfh(xdr, &hdr);
2007 encode_getfh(xdr, &hdr);
2008 encode_getfattr(xdr, args->bitmask, &hdr);
2009 encode_nops(&hdr);
2010 }
2011
2012 /*
2013 * Encode REMOVE request
2014 */
2015 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2016 const struct nfs_removeargs *args)
2017 {
2018 struct compound_hdr hdr = {
2019 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2020 };
2021
2022 encode_compound_hdr(xdr, req, &hdr);
2023 encode_sequence(xdr, &args->seq_args, &hdr);
2024 encode_putfh(xdr, args->fh, &hdr);
2025 encode_remove(xdr, &args->name, &hdr);
2026 encode_getfattr(xdr, args->bitmask, &hdr);
2027 encode_nops(&hdr);
2028 }
2029
2030 /*
2031 * Encode RENAME request
2032 */
2033 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2034 const struct nfs_renameargs *args)
2035 {
2036 struct compound_hdr hdr = {
2037 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2038 };
2039
2040 encode_compound_hdr(xdr, req, &hdr);
2041 encode_sequence(xdr, &args->seq_args, &hdr);
2042 encode_putfh(xdr, args->old_dir, &hdr);
2043 encode_savefh(xdr, &hdr);
2044 encode_putfh(xdr, args->new_dir, &hdr);
2045 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2046 encode_getfattr(xdr, args->bitmask, &hdr);
2047 encode_restorefh(xdr, &hdr);
2048 encode_getfattr(xdr, args->bitmask, &hdr);
2049 encode_nops(&hdr);
2050 }
2051
2052 /*
2053 * Encode LINK request
2054 */
2055 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2056 const struct nfs4_link_arg *args)
2057 {
2058 struct compound_hdr hdr = {
2059 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2060 };
2061
2062 encode_compound_hdr(xdr, req, &hdr);
2063 encode_sequence(xdr, &args->seq_args, &hdr);
2064 encode_putfh(xdr, args->fh, &hdr);
2065 encode_savefh(xdr, &hdr);
2066 encode_putfh(xdr, args->dir_fh, &hdr);
2067 encode_link(xdr, args->name, &hdr);
2068 encode_getfattr(xdr, args->bitmask, &hdr);
2069 encode_restorefh(xdr, &hdr);
2070 encode_getfattr(xdr, args->bitmask, &hdr);
2071 encode_nops(&hdr);
2072 }
2073
2074 /*
2075 * Encode CREATE request
2076 */
2077 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2078 const struct nfs4_create_arg *args)
2079 {
2080 struct compound_hdr hdr = {
2081 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2082 };
2083
2084 encode_compound_hdr(xdr, req, &hdr);
2085 encode_sequence(xdr, &args->seq_args, &hdr);
2086 encode_putfh(xdr, args->dir_fh, &hdr);
2087 encode_savefh(xdr, &hdr);
2088 encode_create(xdr, args, &hdr);
2089 encode_getfh(xdr, &hdr);
2090 encode_getfattr(xdr, args->bitmask, &hdr);
2091 encode_restorefh(xdr, &hdr);
2092 encode_getfattr(xdr, args->bitmask, &hdr);
2093 encode_nops(&hdr);
2094 }
2095
2096 /*
2097 * Encode SYMLINK request
2098 */
2099 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2100 const struct nfs4_create_arg *args)
2101 {
2102 nfs4_xdr_enc_create(req, xdr, args);
2103 }
2104
2105 /*
2106 * Encode GETATTR request
2107 */
2108 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2109 const struct nfs4_getattr_arg *args)
2110 {
2111 struct compound_hdr hdr = {
2112 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2113 };
2114
2115 encode_compound_hdr(xdr, req, &hdr);
2116 encode_sequence(xdr, &args->seq_args, &hdr);
2117 encode_putfh(xdr, args->fh, &hdr);
2118 encode_getfattr(xdr, args->bitmask, &hdr);
2119 encode_nops(&hdr);
2120 }
2121
2122 /*
2123 * Encode a CLOSE request
2124 */
2125 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2126 struct nfs_closeargs *args)
2127 {
2128 struct compound_hdr hdr = {
2129 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2130 };
2131
2132 encode_compound_hdr(xdr, req, &hdr);
2133 encode_sequence(xdr, &args->seq_args, &hdr);
2134 encode_putfh(xdr, args->fh, &hdr);
2135 encode_close(xdr, args, &hdr);
2136 encode_getfattr(xdr, args->bitmask, &hdr);
2137 encode_nops(&hdr);
2138 }
2139
2140 /*
2141 * Encode an OPEN request
2142 */
2143 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2144 struct nfs_openargs *args)
2145 {
2146 struct compound_hdr hdr = {
2147 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2148 };
2149
2150 encode_compound_hdr(xdr, req, &hdr);
2151 encode_sequence(xdr, &args->seq_args, &hdr);
2152 encode_putfh(xdr, args->fh, &hdr);
2153 encode_savefh(xdr, &hdr);
2154 encode_open(xdr, args, &hdr);
2155 encode_getfh(xdr, &hdr);
2156 encode_getfattr(xdr, args->bitmask, &hdr);
2157 encode_restorefh(xdr, &hdr);
2158 encode_getfattr(xdr, args->bitmask, &hdr);
2159 encode_nops(&hdr);
2160 }
2161
2162 /*
2163 * Encode an OPEN_CONFIRM request
2164 */
2165 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2166 struct xdr_stream *xdr,
2167 struct nfs_open_confirmargs *args)
2168 {
2169 struct compound_hdr hdr = {
2170 .nops = 0,
2171 };
2172
2173 encode_compound_hdr(xdr, req, &hdr);
2174 encode_putfh(xdr, args->fh, &hdr);
2175 encode_open_confirm(xdr, args, &hdr);
2176 encode_nops(&hdr);
2177 }
2178
2179 /*
2180 * Encode an OPEN request with no attributes.
2181 */
2182 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2183 struct xdr_stream *xdr,
2184 struct nfs_openargs *args)
2185 {
2186 struct compound_hdr hdr = {
2187 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2188 };
2189
2190 encode_compound_hdr(xdr, req, &hdr);
2191 encode_sequence(xdr, &args->seq_args, &hdr);
2192 encode_putfh(xdr, args->fh, &hdr);
2193 encode_open(xdr, args, &hdr);
2194 encode_getfattr(xdr, args->bitmask, &hdr);
2195 encode_nops(&hdr);
2196 }
2197
2198 /*
2199 * Encode an OPEN_DOWNGRADE request
2200 */
2201 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2202 struct xdr_stream *xdr,
2203 struct nfs_closeargs *args)
2204 {
2205 struct compound_hdr hdr = {
2206 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2207 };
2208
2209 encode_compound_hdr(xdr, req, &hdr);
2210 encode_sequence(xdr, &args->seq_args, &hdr);
2211 encode_putfh(xdr, args->fh, &hdr);
2212 encode_open_downgrade(xdr, args, &hdr);
2213 encode_getfattr(xdr, args->bitmask, &hdr);
2214 encode_nops(&hdr);
2215 }
2216
2217 /*
2218 * Encode a LOCK request
2219 */
2220 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2221 struct nfs_lock_args *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_lock(xdr, args, &hdr);
2231 encode_nops(&hdr);
2232 }
2233
2234 /*
2235 * Encode a LOCKT request
2236 */
2237 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2238 struct nfs_lockt_args *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_lockt(xdr, args, &hdr);
2248 encode_nops(&hdr);
2249 }
2250
2251 /*
2252 * Encode a LOCKU request
2253 */
2254 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2255 struct nfs_locku_args *args)
2256 {
2257 struct compound_hdr hdr = {
2258 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2259 };
2260
2261 encode_compound_hdr(xdr, req, &hdr);
2262 encode_sequence(xdr, &args->seq_args, &hdr);
2263 encode_putfh(xdr, args->fh, &hdr);
2264 encode_locku(xdr, args, &hdr);
2265 encode_nops(&hdr);
2266 }
2267
2268 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2269 struct xdr_stream *xdr,
2270 struct nfs_release_lockowner_args *args)
2271 {
2272 struct compound_hdr hdr = {
2273 .minorversion = 0,
2274 };
2275
2276 encode_compound_hdr(xdr, req, &hdr);
2277 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2278 encode_nops(&hdr);
2279 }
2280
2281 /*
2282 * Encode a READLINK request
2283 */
2284 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2285 const struct nfs4_readlink *args)
2286 {
2287 struct compound_hdr hdr = {
2288 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2289 };
2290
2291 encode_compound_hdr(xdr, req, &hdr);
2292 encode_sequence(xdr, &args->seq_args, &hdr);
2293 encode_putfh(xdr, args->fh, &hdr);
2294 encode_readlink(xdr, args, req, &hdr);
2295
2296 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2297 args->pgbase, args->pglen);
2298 encode_nops(&hdr);
2299 }
2300
2301 /*
2302 * Encode a READDIR request
2303 */
2304 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2305 const struct nfs4_readdir_arg *args)
2306 {
2307 struct compound_hdr hdr = {
2308 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2309 };
2310
2311 encode_compound_hdr(xdr, req, &hdr);
2312 encode_sequence(xdr, &args->seq_args, &hdr);
2313 encode_putfh(xdr, args->fh, &hdr);
2314 encode_readdir(xdr, args, req, &hdr);
2315
2316 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2317 args->pgbase, args->count);
2318 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2319 __func__, hdr.replen << 2, args->pages,
2320 args->pgbase, args->count);
2321 encode_nops(&hdr);
2322 }
2323
2324 /*
2325 * Encode a READ request
2326 */
2327 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2328 struct nfs_readargs *args)
2329 {
2330 struct compound_hdr hdr = {
2331 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2332 };
2333
2334 encode_compound_hdr(xdr, req, &hdr);
2335 encode_sequence(xdr, &args->seq_args, &hdr);
2336 encode_putfh(xdr, args->fh, &hdr);
2337 encode_read(xdr, args, &hdr);
2338
2339 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2340 args->pages, args->pgbase, args->count);
2341 req->rq_rcv_buf.flags |= XDRBUF_READ;
2342 encode_nops(&hdr);
2343 }
2344
2345 /*
2346 * Encode an SETATTR request
2347 */
2348 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2349 struct nfs_setattrargs *args)
2350 {
2351 struct compound_hdr hdr = {
2352 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2353 };
2354
2355 encode_compound_hdr(xdr, req, &hdr);
2356 encode_sequence(xdr, &args->seq_args, &hdr);
2357 encode_putfh(xdr, args->fh, &hdr);
2358 encode_setattr(xdr, args, args->server, &hdr);
2359 encode_getfattr(xdr, args->bitmask, &hdr);
2360 encode_nops(&hdr);
2361 }
2362
2363 /*
2364 * Encode a GETACL request
2365 */
2366 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2367 struct nfs_getaclargs *args)
2368 {
2369 struct compound_hdr hdr = {
2370 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2371 };
2372 uint32_t replen;
2373
2374 encode_compound_hdr(xdr, req, &hdr);
2375 encode_sequence(xdr, &args->seq_args, &hdr);
2376 encode_putfh(xdr, args->fh, &hdr);
2377 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2378 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2379
2380 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2381 args->acl_pages, args->acl_pgbase, args->acl_len);
2382 encode_nops(&hdr);
2383 }
2384
2385 /*
2386 * Encode a WRITE request
2387 */
2388 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2389 struct nfs_writeargs *args)
2390 {
2391 struct compound_hdr hdr = {
2392 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2393 };
2394
2395 encode_compound_hdr(xdr, req, &hdr);
2396 encode_sequence(xdr, &args->seq_args, &hdr);
2397 encode_putfh(xdr, args->fh, &hdr);
2398 encode_write(xdr, args, &hdr);
2399 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2400 if (args->bitmask)
2401 encode_getfattr(xdr, args->bitmask, &hdr);
2402 encode_nops(&hdr);
2403 }
2404
2405 /*
2406 * a COMMIT request
2407 */
2408 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2409 struct nfs_writeargs *args)
2410 {
2411 struct compound_hdr hdr = {
2412 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2413 };
2414
2415 encode_compound_hdr(xdr, req, &hdr);
2416 encode_sequence(xdr, &args->seq_args, &hdr);
2417 encode_putfh(xdr, args->fh, &hdr);
2418 encode_commit(xdr, args, &hdr);
2419 if (args->bitmask)
2420 encode_getfattr(xdr, args->bitmask, &hdr);
2421 encode_nops(&hdr);
2422 }
2423
2424 /*
2425 * FSINFO request
2426 */
2427 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2428 struct nfs4_fsinfo_arg *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_fsinfo(xdr, args->bitmask, &hdr);
2438 encode_nops(&hdr);
2439 }
2440
2441 /*
2442 * a PATHCONF request
2443 */
2444 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2445 const struct nfs4_pathconf_arg *args)
2446 {
2447 struct compound_hdr hdr = {
2448 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2449 };
2450
2451 encode_compound_hdr(xdr, req, &hdr);
2452 encode_sequence(xdr, &args->seq_args, &hdr);
2453 encode_putfh(xdr, args->fh, &hdr);
2454 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2455 &hdr);
2456 encode_nops(&hdr);
2457 }
2458
2459 /*
2460 * a STATFS request
2461 */
2462 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2463 const struct nfs4_statfs_arg *args)
2464 {
2465 struct compound_hdr hdr = {
2466 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2467 };
2468
2469 encode_compound_hdr(xdr, req, &hdr);
2470 encode_sequence(xdr, &args->seq_args, &hdr);
2471 encode_putfh(xdr, args->fh, &hdr);
2472 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2473 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2474 encode_nops(&hdr);
2475 }
2476
2477 /*
2478 * GETATTR_BITMAP request
2479 */
2480 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2481 struct xdr_stream *xdr,
2482 struct nfs4_server_caps_arg *args)
2483 {
2484 struct compound_hdr hdr = {
2485 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2486 };
2487
2488 encode_compound_hdr(xdr, req, &hdr);
2489 encode_sequence(xdr, &args->seq_args, &hdr);
2490 encode_putfh(xdr, args->fhandle, &hdr);
2491 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2492 FATTR4_WORD0_LINK_SUPPORT|
2493 FATTR4_WORD0_SYMLINK_SUPPORT|
2494 FATTR4_WORD0_ACLSUPPORT, &hdr);
2495 encode_nops(&hdr);
2496 }
2497
2498 /*
2499 * a RENEW request
2500 */
2501 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2502 struct nfs_client *clp)
2503 {
2504 struct compound_hdr hdr = {
2505 .nops = 0,
2506 };
2507
2508 encode_compound_hdr(xdr, req, &hdr);
2509 encode_renew(xdr, clp, &hdr);
2510 encode_nops(&hdr);
2511 }
2512
2513 /*
2514 * a SETCLIENTID request
2515 */
2516 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2517 struct xdr_stream *xdr,
2518 struct nfs4_setclientid *sc)
2519 {
2520 struct compound_hdr hdr = {
2521 .nops = 0,
2522 };
2523
2524 encode_compound_hdr(xdr, req, &hdr);
2525 encode_setclientid(xdr, sc, &hdr);
2526 encode_nops(&hdr);
2527 }
2528
2529 /*
2530 * a SETCLIENTID_CONFIRM request
2531 */
2532 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2533 struct xdr_stream *xdr,
2534 struct nfs4_setclientid_res *arg)
2535 {
2536 struct compound_hdr hdr = {
2537 .nops = 0,
2538 };
2539 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2540
2541 encode_compound_hdr(xdr, req, &hdr);
2542 encode_setclientid_confirm(xdr, arg, &hdr);
2543 encode_putrootfh(xdr, &hdr);
2544 encode_fsinfo(xdr, lease_bitmap, &hdr);
2545 encode_nops(&hdr);
2546 }
2547
2548 /*
2549 * DELEGRETURN request
2550 */
2551 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2552 struct xdr_stream *xdr,
2553 const struct nfs4_delegreturnargs *args)
2554 {
2555 struct compound_hdr hdr = {
2556 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2557 };
2558
2559 encode_compound_hdr(xdr, req, &hdr);
2560 encode_sequence(xdr, &args->seq_args, &hdr);
2561 encode_putfh(xdr, args->fhandle, &hdr);
2562 encode_delegreturn(xdr, args->stateid, &hdr);
2563 encode_getfattr(xdr, args->bitmask, &hdr);
2564 encode_nops(&hdr);
2565 }
2566
2567 /*
2568 * Encode FS_LOCATIONS request
2569 */
2570 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2571 struct xdr_stream *xdr,
2572 struct nfs4_fs_locations_arg *args)
2573 {
2574 struct compound_hdr hdr = {
2575 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2576 };
2577 uint32_t replen;
2578
2579 encode_compound_hdr(xdr, req, &hdr);
2580 encode_sequence(xdr, &args->seq_args, &hdr);
2581 encode_putfh(xdr, args->dir_fh, &hdr);
2582 encode_lookup(xdr, args->name, &hdr);
2583 replen = hdr.replen; /* get the attribute into args->page */
2584 encode_fs_locations(xdr, args->bitmask, &hdr);
2585
2586 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2587 0, PAGE_SIZE);
2588 encode_nops(&hdr);
2589 }
2590
2591 /*
2592 * Encode SECINFO request
2593 */
2594 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2595 struct xdr_stream *xdr,
2596 struct nfs4_secinfo_arg *args)
2597 {
2598 struct compound_hdr hdr = {
2599 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2600 };
2601
2602 encode_compound_hdr(xdr, req, &hdr);
2603 encode_sequence(xdr, &args->seq_args, &hdr);
2604 encode_putfh(xdr, args->dir_fh, &hdr);
2605 encode_secinfo(xdr, args->name, &hdr);
2606 encode_nops(&hdr);
2607 }
2608
2609 #if defined(CONFIG_NFS_V4_1)
2610 /*
2611 * EXCHANGE_ID request
2612 */
2613 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2614 struct xdr_stream *xdr,
2615 struct nfs41_exchange_id_args *args)
2616 {
2617 struct compound_hdr hdr = {
2618 .minorversion = args->client->cl_mvops->minor_version,
2619 };
2620
2621 encode_compound_hdr(xdr, req, &hdr);
2622 encode_exchange_id(xdr, args, &hdr);
2623 encode_nops(&hdr);
2624 }
2625
2626 /*
2627 * a CREATE_SESSION request
2628 */
2629 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2630 struct xdr_stream *xdr,
2631 struct nfs41_create_session_args *args)
2632 {
2633 struct compound_hdr hdr = {
2634 .minorversion = args->client->cl_mvops->minor_version,
2635 };
2636
2637 encode_compound_hdr(xdr, req, &hdr);
2638 encode_create_session(xdr, args, &hdr);
2639 encode_nops(&hdr);
2640 }
2641
2642 /*
2643 * a DESTROY_SESSION request
2644 */
2645 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2646 struct xdr_stream *xdr,
2647 struct nfs4_session *session)
2648 {
2649 struct compound_hdr hdr = {
2650 .minorversion = session->clp->cl_mvops->minor_version,
2651 };
2652
2653 encode_compound_hdr(xdr, req, &hdr);
2654 encode_destroy_session(xdr, session, &hdr);
2655 encode_nops(&hdr);
2656 }
2657
2658 /*
2659 * a SEQUENCE request
2660 */
2661 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2662 struct nfs4_sequence_args *args)
2663 {
2664 struct compound_hdr hdr = {
2665 .minorversion = nfs4_xdr_minorversion(args),
2666 };
2667
2668 encode_compound_hdr(xdr, req, &hdr);
2669 encode_sequence(xdr, args, &hdr);
2670 encode_nops(&hdr);
2671 }
2672
2673 /*
2674 * a GET_LEASE_TIME request
2675 */
2676 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2677 struct xdr_stream *xdr,
2678 struct nfs4_get_lease_time_args *args)
2679 {
2680 struct compound_hdr hdr = {
2681 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2682 };
2683 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2684
2685 encode_compound_hdr(xdr, req, &hdr);
2686 encode_sequence(xdr, &args->la_seq_args, &hdr);
2687 encode_putrootfh(xdr, &hdr);
2688 encode_fsinfo(xdr, lease_bitmap, &hdr);
2689 encode_nops(&hdr);
2690 }
2691
2692 /*
2693 * a RECLAIM_COMPLETE request
2694 */
2695 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2696 struct xdr_stream *xdr,
2697 struct nfs41_reclaim_complete_args *args)
2698 {
2699 struct compound_hdr hdr = {
2700 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2701 };
2702
2703 encode_compound_hdr(xdr, req, &hdr);
2704 encode_sequence(xdr, &args->seq_args, &hdr);
2705 encode_reclaim_complete(xdr, args, &hdr);
2706 encode_nops(&hdr);
2707 }
2708
2709 /*
2710 * Encode GETDEVICEINFO request
2711 */
2712 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2713 struct xdr_stream *xdr,
2714 struct nfs4_getdeviceinfo_args *args)
2715 {
2716 struct compound_hdr hdr = {
2717 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2718 };
2719
2720 encode_compound_hdr(xdr, req, &hdr);
2721 encode_sequence(xdr, &args->seq_args, &hdr);
2722 encode_getdeviceinfo(xdr, args, &hdr);
2723
2724 /* set up reply kvec. Subtract notification bitmap max size (2)
2725 * so that notification bitmap is put in xdr_buf tail */
2726 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2727 args->pdev->pages, args->pdev->pgbase,
2728 args->pdev->pglen);
2729
2730 encode_nops(&hdr);
2731 }
2732
2733 /*
2734 * Encode LAYOUTGET request
2735 */
2736 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2737 struct xdr_stream *xdr,
2738 struct nfs4_layoutget_args *args)
2739 {
2740 struct compound_hdr hdr = {
2741 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2742 };
2743
2744 encode_compound_hdr(xdr, req, &hdr);
2745 encode_sequence(xdr, &args->seq_args, &hdr);
2746 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2747 encode_layoutget(xdr, args, &hdr);
2748
2749 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2750 args->layout.pages, 0, args->layout.pglen);
2751
2752 encode_nops(&hdr);
2753 }
2754
2755 /*
2756 * Encode LAYOUTCOMMIT request
2757 */
2758 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2759 struct xdr_stream *xdr,
2760 struct nfs4_layoutcommit_args *args)
2761 {
2762 struct nfs4_layoutcommit_data *data =
2763 container_of(args, struct nfs4_layoutcommit_data, args);
2764 struct compound_hdr hdr = {
2765 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2766 };
2767
2768 encode_compound_hdr(xdr, req, &hdr);
2769 encode_sequence(xdr, &args->seq_args, &hdr);
2770 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2771 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2772 encode_getfattr(xdr, args->bitmask, &hdr);
2773 encode_nops(&hdr);
2774 }
2775
2776 /*
2777 * Encode LAYOUTRETURN request
2778 */
2779 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2780 struct xdr_stream *xdr,
2781 struct nfs4_layoutreturn_args *args)
2782 {
2783 struct compound_hdr hdr = {
2784 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2785 };
2786
2787 encode_compound_hdr(xdr, req, &hdr);
2788 encode_sequence(xdr, &args->seq_args, &hdr);
2789 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2790 encode_layoutreturn(xdr, args, &hdr);
2791 encode_nops(&hdr);
2792 }
2793 #endif /* CONFIG_NFS_V4_1 */
2794
2795 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2796 {
2797 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2798 "Remaining buffer length is %tu words.\n",
2799 func, xdr->end - xdr->p);
2800 }
2801
2802 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2803 {
2804 __be32 *p;
2805
2806 p = xdr_inline_decode(xdr, 4);
2807 if (unlikely(!p))
2808 goto out_overflow;
2809 *len = be32_to_cpup(p);
2810 p = xdr_inline_decode(xdr, *len);
2811 if (unlikely(!p))
2812 goto out_overflow;
2813 *string = (char *)p;
2814 return 0;
2815 out_overflow:
2816 print_overflow_msg(__func__, xdr);
2817 return -EIO;
2818 }
2819
2820 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2821 {
2822 __be32 *p;
2823
2824 p = xdr_inline_decode(xdr, 8);
2825 if (unlikely(!p))
2826 goto out_overflow;
2827 hdr->status = be32_to_cpup(p++);
2828 hdr->taglen = be32_to_cpup(p);
2829
2830 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2831 if (unlikely(!p))
2832 goto out_overflow;
2833 hdr->tag = (char *)p;
2834 p += XDR_QUADLEN(hdr->taglen);
2835 hdr->nops = be32_to_cpup(p);
2836 if (unlikely(hdr->nops < 1))
2837 return nfs4_stat_to_errno(hdr->status);
2838 return 0;
2839 out_overflow:
2840 print_overflow_msg(__func__, xdr);
2841 return -EIO;
2842 }
2843
2844 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2845 {
2846 __be32 *p;
2847 uint32_t opnum;
2848 int32_t nfserr;
2849
2850 p = xdr_inline_decode(xdr, 8);
2851 if (unlikely(!p))
2852 goto out_overflow;
2853 opnum = be32_to_cpup(p++);
2854 if (opnum != expected) {
2855 dprintk("nfs: Server returned operation"
2856 " %d but we issued a request for %d\n",
2857 opnum, expected);
2858 return -EIO;
2859 }
2860 nfserr = be32_to_cpup(p);
2861 if (nfserr != NFS_OK)
2862 return nfs4_stat_to_errno(nfserr);
2863 return 0;
2864 out_overflow:
2865 print_overflow_msg(__func__, xdr);
2866 return -EIO;
2867 }
2868
2869 /* Dummy routine */
2870 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2871 {
2872 __be32 *p;
2873 unsigned int strlen;
2874 char *str;
2875
2876 p = xdr_inline_decode(xdr, 12);
2877 if (likely(p))
2878 return decode_opaque_inline(xdr, &strlen, &str);
2879 print_overflow_msg(__func__, xdr);
2880 return -EIO;
2881 }
2882
2883 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2884 {
2885 uint32_t bmlen;
2886 __be32 *p;
2887
2888 p = xdr_inline_decode(xdr, 4);
2889 if (unlikely(!p))
2890 goto out_overflow;
2891 bmlen = be32_to_cpup(p);
2892
2893 bitmap[0] = bitmap[1] = 0;
2894 p = xdr_inline_decode(xdr, (bmlen << 2));
2895 if (unlikely(!p))
2896 goto out_overflow;
2897 if (bmlen > 0) {
2898 bitmap[0] = be32_to_cpup(p++);
2899 if (bmlen > 1)
2900 bitmap[1] = be32_to_cpup(p);
2901 }
2902 return 0;
2903 out_overflow:
2904 print_overflow_msg(__func__, xdr);
2905 return -EIO;
2906 }
2907
2908 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2909 {
2910 __be32 *p;
2911
2912 p = xdr_inline_decode(xdr, 4);
2913 if (unlikely(!p))
2914 goto out_overflow;
2915 *attrlen = be32_to_cpup(p);
2916 *savep = xdr->p;
2917 return 0;
2918 out_overflow:
2919 print_overflow_msg(__func__, xdr);
2920 return -EIO;
2921 }
2922
2923 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2924 {
2925 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2926 int ret;
2927 ret = decode_attr_bitmap(xdr, bitmask);
2928 if (unlikely(ret < 0))
2929 return ret;
2930 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2931 } else
2932 bitmask[0] = bitmask[1] = 0;
2933 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2934 return 0;
2935 }
2936
2937 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2938 {
2939 __be32 *p;
2940 int ret = 0;
2941
2942 *type = 0;
2943 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2944 return -EIO;
2945 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2946 p = xdr_inline_decode(xdr, 4);
2947 if (unlikely(!p))
2948 goto out_overflow;
2949 *type = be32_to_cpup(p);
2950 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2951 dprintk("%s: bad type %d\n", __func__, *type);
2952 return -EIO;
2953 }
2954 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2955 ret = NFS_ATTR_FATTR_TYPE;
2956 }
2957 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2958 return ret;
2959 out_overflow:
2960 print_overflow_msg(__func__, xdr);
2961 return -EIO;
2962 }
2963
2964 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2965 {
2966 __be32 *p;
2967 int ret = 0;
2968
2969 *change = 0;
2970 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2971 return -EIO;
2972 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2973 p = xdr_inline_decode(xdr, 8);
2974 if (unlikely(!p))
2975 goto out_overflow;
2976 xdr_decode_hyper(p, change);
2977 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2978 ret = NFS_ATTR_FATTR_CHANGE;
2979 }
2980 dprintk("%s: change attribute=%Lu\n", __func__,
2981 (unsigned long long)*change);
2982 return ret;
2983 out_overflow:
2984 print_overflow_msg(__func__, xdr);
2985 return -EIO;
2986 }
2987
2988 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2989 {
2990 __be32 *p;
2991 int ret = 0;
2992
2993 *size = 0;
2994 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2995 return -EIO;
2996 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2997 p = xdr_inline_decode(xdr, 8);
2998 if (unlikely(!p))
2999 goto out_overflow;
3000 xdr_decode_hyper(p, size);
3001 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3002 ret = NFS_ATTR_FATTR_SIZE;
3003 }
3004 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3005 return ret;
3006 out_overflow:
3007 print_overflow_msg(__func__, xdr);
3008 return -EIO;
3009 }
3010
3011 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3012 {
3013 __be32 *p;
3014
3015 *res = 0;
3016 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3017 return -EIO;
3018 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3019 p = xdr_inline_decode(xdr, 4);
3020 if (unlikely(!p))
3021 goto out_overflow;
3022 *res = be32_to_cpup(p);
3023 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3024 }
3025 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3026 return 0;
3027 out_overflow:
3028 print_overflow_msg(__func__, xdr);
3029 return -EIO;
3030 }
3031
3032 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3033 {
3034 __be32 *p;
3035
3036 *res = 0;
3037 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3038 return -EIO;
3039 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3040 p = xdr_inline_decode(xdr, 4);
3041 if (unlikely(!p))
3042 goto out_overflow;
3043 *res = be32_to_cpup(p);
3044 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3045 }
3046 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3047 return 0;
3048 out_overflow:
3049 print_overflow_msg(__func__, xdr);
3050 return -EIO;
3051 }
3052
3053 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3054 {
3055 __be32 *p;
3056 int ret = 0;
3057
3058 fsid->major = 0;
3059 fsid->minor = 0;
3060 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3061 return -EIO;
3062 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3063 p = xdr_inline_decode(xdr, 16);
3064 if (unlikely(!p))
3065 goto out_overflow;
3066 p = xdr_decode_hyper(p, &fsid->major);
3067 xdr_decode_hyper(p, &fsid->minor);
3068 bitmap[0] &= ~FATTR4_WORD0_FSID;
3069 ret = NFS_ATTR_FATTR_FSID;
3070 }
3071 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3072 (unsigned long long)fsid->major,
3073 (unsigned long long)fsid->minor);
3074 return ret;
3075 out_overflow:
3076 print_overflow_msg(__func__, xdr);
3077 return -EIO;
3078 }
3079
3080 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3081 {
3082 __be32 *p;
3083
3084 *res = 60;
3085 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3086 return -EIO;
3087 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3088 p = xdr_inline_decode(xdr, 4);
3089 if (unlikely(!p))
3090 goto out_overflow;
3091 *res = be32_to_cpup(p);
3092 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3093 }
3094 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3095 return 0;
3096 out_overflow:
3097 print_overflow_msg(__func__, xdr);
3098 return -EIO;
3099 }
3100
3101 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
3102 {
3103 __be32 *p;
3104
3105 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3106 return -EIO;
3107 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3108 p = xdr_inline_decode(xdr, 4);
3109 if (unlikely(!p))
3110 goto out_overflow;
3111 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3112 return -be32_to_cpup(p);
3113 }
3114 return 0;
3115 out_overflow:
3116 print_overflow_msg(__func__, xdr);
3117 return -EIO;
3118 }
3119
3120 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3121 {
3122 __be32 *p;
3123 int len;
3124
3125 if (fh != NULL)
3126 memset(fh, 0, sizeof(*fh));
3127
3128 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3129 return -EIO;
3130 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3131 p = xdr_inline_decode(xdr, 4);
3132 if (unlikely(!p))
3133 goto out_overflow;
3134 len = be32_to_cpup(p);
3135 if (len > NFS4_FHSIZE)
3136 return -EIO;
3137 p = xdr_inline_decode(xdr, len);
3138 if (unlikely(!p))
3139 goto out_overflow;
3140 if (fh != NULL) {
3141 memcpy(fh->data, p, len);
3142 fh->size = len;
3143 }
3144 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3145 }
3146 return 0;
3147 out_overflow:
3148 print_overflow_msg(__func__, xdr);
3149 return -EIO;
3150 }
3151
3152 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3153 {
3154 __be32 *p;
3155
3156 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3157 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3158 return -EIO;
3159 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3160 p = xdr_inline_decode(xdr, 4);
3161 if (unlikely(!p))
3162 goto out_overflow;
3163 *res = be32_to_cpup(p);
3164 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3165 }
3166 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3167 return 0;
3168 out_overflow:
3169 print_overflow_msg(__func__, xdr);
3170 return -EIO;
3171 }
3172
3173 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3174 {
3175 __be32 *p;
3176 int ret = 0;
3177
3178 *fileid = 0;
3179 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3180 return -EIO;
3181 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3182 p = xdr_inline_decode(xdr, 8);
3183 if (unlikely(!p))
3184 goto out_overflow;
3185 xdr_decode_hyper(p, fileid);
3186 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3187 ret = NFS_ATTR_FATTR_FILEID;
3188 }
3189 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3190 return ret;
3191 out_overflow:
3192 print_overflow_msg(__func__, xdr);
3193 return -EIO;
3194 }
3195
3196 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3197 {
3198 __be32 *p;
3199 int ret = 0;
3200
3201 *fileid = 0;
3202 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3203 return -EIO;
3204 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3205 p = xdr_inline_decode(xdr, 8);
3206 if (unlikely(!p))
3207 goto out_overflow;
3208 xdr_decode_hyper(p, fileid);
3209 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3210 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3211 }
3212 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3213 return ret;
3214 out_overflow:
3215 print_overflow_msg(__func__, xdr);
3216 return -EIO;
3217 }
3218
3219 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3220 {
3221 __be32 *p;
3222 int status = 0;
3223
3224 *res = 0;
3225 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3226 return -EIO;
3227 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3228 p = xdr_inline_decode(xdr, 8);
3229 if (unlikely(!p))
3230 goto out_overflow;
3231 xdr_decode_hyper(p, res);
3232 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3233 }
3234 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3235 return status;
3236 out_overflow:
3237 print_overflow_msg(__func__, xdr);
3238 return -EIO;
3239 }
3240
3241 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3242 {
3243 __be32 *p;
3244 int status = 0;
3245
3246 *res = 0;
3247 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3248 return -EIO;
3249 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3250 p = xdr_inline_decode(xdr, 8);
3251 if (unlikely(!p))
3252 goto out_overflow;
3253 xdr_decode_hyper(p, res);
3254 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3255 }
3256 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3257 return status;
3258 out_overflow:
3259 print_overflow_msg(__func__, xdr);
3260 return -EIO;
3261 }
3262
3263 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3264 {
3265 __be32 *p;
3266 int status = 0;
3267
3268 *res = 0;
3269 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3270 return -EIO;
3271 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3272 p = xdr_inline_decode(xdr, 8);
3273 if (unlikely(!p))
3274 goto out_overflow;
3275 xdr_decode_hyper(p, res);
3276 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3277 }
3278 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3279 return status;
3280 out_overflow:
3281 print_overflow_msg(__func__, xdr);
3282 return -EIO;
3283 }
3284
3285 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3286 {
3287 u32 n;
3288 __be32 *p;
3289 int status = 0;
3290
3291 p = xdr_inline_decode(xdr, 4);
3292 if (unlikely(!p))
3293 goto out_overflow;
3294 n = be32_to_cpup(p);
3295 if (n == 0)
3296 goto root_path;
3297 dprintk("path ");
3298 path->ncomponents = 0;
3299 while (path->ncomponents < n) {
3300 struct nfs4_string *component = &path->components[path->ncomponents];
3301 status = decode_opaque_inline(xdr, &component->len, &component->data);
3302 if (unlikely(status != 0))
3303 goto out_eio;
3304 if (path->ncomponents != n)
3305 dprintk("/");
3306 dprintk("%s", component->data);
3307 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3308 path->ncomponents++;
3309 else {
3310 dprintk("cannot parse %d components in path\n", n);
3311 goto out_eio;
3312 }
3313 }
3314 out:
3315 dprintk("\n");
3316 return status;
3317 root_path:
3318 /* a root pathname is sent as a zero component4 */
3319 path->ncomponents = 1;
3320 path->components[0].len=0;
3321 path->components[0].data=NULL;
3322 dprintk("path /\n");
3323 goto out;
3324 out_eio:
3325 dprintk(" status %d", status);
3326 status = -EIO;
3327 goto out;
3328 out_overflow:
3329 print_overflow_msg(__func__, xdr);
3330 return -EIO;
3331 }
3332
3333 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3334 {
3335 int n;
3336 __be32 *p;
3337 int status = -EIO;
3338
3339 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3340 goto out;
3341 status = 0;
3342 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3343 goto out;
3344 dprintk("%s: fsroot ", __func__);
3345 status = decode_pathname(xdr, &res->fs_path);
3346 if (unlikely(status != 0))
3347 goto out;
3348 p = xdr_inline_decode(xdr, 4);
3349 if (unlikely(!p))
3350 goto out_overflow;
3351 n = be32_to_cpup(p);
3352 if (n <= 0)
3353 goto out_eio;
3354 res->nlocations = 0;
3355 while (res->nlocations < n) {
3356 u32 m;
3357 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3358
3359 p = xdr_inline_decode(xdr, 4);
3360 if (unlikely(!p))
3361 goto out_overflow;
3362 m = be32_to_cpup(p);
3363
3364 loc->nservers = 0;
3365 dprintk("%s: servers ", __func__);
3366 while (loc->nservers < m) {
3367 struct nfs4_string *server = &loc->servers[loc->nservers];
3368 status = decode_opaque_inline(xdr, &server->len, &server->data);
3369 if (unlikely(status != 0))
3370 goto out_eio;
3371 dprintk("%s ", server->data);
3372 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3373 loc->nservers++;
3374 else {
3375 unsigned int i;
3376 dprintk("%s: using first %u of %u servers "
3377 "returned for location %u\n",
3378 __func__,
3379 NFS4_FS_LOCATION_MAXSERVERS,
3380 m, res->nlocations);
3381 for (i = loc->nservers; i < m; i++) {
3382 unsigned int len;
3383 char *data;
3384 status = decode_opaque_inline(xdr, &len, &data);
3385 if (unlikely(status != 0))
3386 goto out_eio;
3387 }
3388 }
3389 }
3390 status = decode_pathname(xdr, &loc->rootpath);
3391 if (unlikely(status != 0))
3392 goto out_eio;
3393 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3394 res->nlocations++;
3395 }
3396 if (res->nlocations != 0)
3397 status = NFS_ATTR_FATTR_V4_REFERRAL;
3398 out:
3399 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3400 return status;
3401 out_overflow:
3402 print_overflow_msg(__func__, xdr);
3403 out_eio:
3404 status = -EIO;
3405 goto out;
3406 }
3407
3408 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3409 {
3410 __be32 *p;
3411 int status = 0;
3412
3413 *res = 0;
3414 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3415 return -EIO;
3416 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3417 p = xdr_inline_decode(xdr, 8);
3418 if (unlikely(!p))
3419 goto out_overflow;
3420 xdr_decode_hyper(p, res);
3421 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3422 }
3423 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3424 return status;
3425 out_overflow:
3426 print_overflow_msg(__func__, xdr);
3427 return -EIO;
3428 }
3429
3430 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3431 {
3432 __be32 *p;
3433 int status = 0;
3434
3435 *maxlink = 1;
3436 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3437 return -EIO;
3438 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3439 p = xdr_inline_decode(xdr, 4);
3440 if (unlikely(!p))
3441 goto out_overflow;
3442 *maxlink = be32_to_cpup(p);
3443 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3444 }
3445 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3446 return status;
3447 out_overflow:
3448 print_overflow_msg(__func__, xdr);
3449 return -EIO;
3450 }
3451
3452 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3453 {
3454 __be32 *p;
3455 int status = 0;
3456
3457 *maxname = 1024;
3458 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3459 return -EIO;
3460 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3461 p = xdr_inline_decode(xdr, 4);
3462 if (unlikely(!p))
3463 goto out_overflow;
3464 *maxname = be32_to_cpup(p);
3465 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3466 }
3467 dprintk("%s: maxname=%u\n", __func__, *maxname);
3468 return status;
3469 out_overflow:
3470 print_overflow_msg(__func__, xdr);
3471 return -EIO;
3472 }
3473
3474 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3475 {
3476 __be32 *p;
3477 int status = 0;
3478
3479 *res = 1024;
3480 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3481 return -EIO;
3482 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3483 uint64_t maxread;
3484 p = xdr_inline_decode(xdr, 8);
3485 if (unlikely(!p))
3486 goto out_overflow;
3487 xdr_decode_hyper(p, &maxread);
3488 if (maxread > 0x7FFFFFFF)
3489 maxread = 0x7FFFFFFF;
3490 *res = (uint32_t)maxread;
3491 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3492 }
3493 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3494 return status;
3495 out_overflow:
3496 print_overflow_msg(__func__, xdr);
3497 return -EIO;
3498 }
3499
3500 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3501 {
3502 __be32 *p;
3503 int status = 0;
3504
3505 *res = 1024;
3506 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3507 return -EIO;
3508 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3509 uint64_t maxwrite;
3510 p = xdr_inline_decode(xdr, 8);
3511 if (unlikely(!p))
3512 goto out_overflow;
3513 xdr_decode_hyper(p, &maxwrite);
3514 if (maxwrite > 0x7FFFFFFF)
3515 maxwrite = 0x7FFFFFFF;
3516 *res = (uint32_t)maxwrite;
3517 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3518 }
3519 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3520 return status;
3521 out_overflow:
3522 print_overflow_msg(__func__, xdr);
3523 return -EIO;
3524 }
3525
3526 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3527 {
3528 uint32_t tmp;
3529 __be32 *p;
3530 int ret = 0;
3531
3532 *mode = 0;
3533 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3534 return -EIO;
3535 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3536 p = xdr_inline_decode(xdr, 4);
3537 if (unlikely(!p))
3538 goto out_overflow;
3539 tmp = be32_to_cpup(p);
3540 *mode = tmp & ~S_IFMT;
3541 bitmap[1] &= ~FATTR4_WORD1_MODE;
3542 ret = NFS_ATTR_FATTR_MODE;
3543 }
3544 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3545 return ret;
3546 out_overflow:
3547 print_overflow_msg(__func__, xdr);
3548 return -EIO;
3549 }
3550
3551 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3552 {
3553 __be32 *p;
3554 int ret = 0;
3555
3556 *nlink = 1;
3557 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3558 return -EIO;
3559 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3560 p = xdr_inline_decode(xdr, 4);
3561 if (unlikely(!p))
3562 goto out_overflow;
3563 *nlink = be32_to_cpup(p);
3564 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3565 ret = NFS_ATTR_FATTR_NLINK;
3566 }
3567 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3568 return ret;
3569 out_overflow:
3570 print_overflow_msg(__func__, xdr);
3571 return -EIO;
3572 }
3573
3574 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3575 const struct nfs_server *server, uint32_t *uid, int may_sleep)
3576 {
3577 uint32_t len;
3578 __be32 *p;
3579 int ret = 0;
3580
3581 *uid = -2;
3582 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3583 return -EIO;
3584 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3585 p = xdr_inline_decode(xdr, 4);
3586 if (unlikely(!p))
3587 goto out_overflow;
3588 len = be32_to_cpup(p);
3589 p = xdr_inline_decode(xdr, len);
3590 if (unlikely(!p))
3591 goto out_overflow;
3592 if (!may_sleep) {
3593 /* do nothing */
3594 } else if (len < XDR_MAX_NETOBJ) {
3595 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3596 ret = NFS_ATTR_FATTR_OWNER;
3597 else
3598 dprintk("%s: nfs_map_name_to_uid failed!\n",
3599 __func__);
3600 } else
3601 dprintk("%s: name too long (%u)!\n",
3602 __func__, len);
3603 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3604 }
3605 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3606 return ret;
3607 out_overflow:
3608 print_overflow_msg(__func__, xdr);
3609 return -EIO;
3610 }
3611
3612 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3613 const struct nfs_server *server, uint32_t *gid, int may_sleep)
3614 {
3615 uint32_t len;
3616 __be32 *p;
3617 int ret = 0;
3618
3619 *gid = -2;
3620 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3621 return -EIO;
3622 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3623 p = xdr_inline_decode(xdr, 4);
3624 if (unlikely(!p))
3625 goto out_overflow;
3626 len = be32_to_cpup(p);
3627 p = xdr_inline_decode(xdr, len);
3628 if (unlikely(!p))
3629 goto out_overflow;
3630 if (!may_sleep) {
3631 /* do nothing */
3632 } else if (len < XDR_MAX_NETOBJ) {
3633 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3634 ret = NFS_ATTR_FATTR_GROUP;
3635 else
3636 dprintk("%s: nfs_map_group_to_gid failed!\n",
3637 __func__);
3638 } else
3639 dprintk("%s: name too long (%u)!\n",
3640 __func__, len);
3641 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3642 }
3643 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3644 return ret;
3645 out_overflow:
3646 print_overflow_msg(__func__, xdr);
3647 return -EIO;
3648 }
3649
3650 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3651 {
3652 uint32_t major = 0, minor = 0;
3653 __be32 *p;
3654 int ret = 0;
3655
3656 *rdev = MKDEV(0,0);
3657 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3658 return -EIO;
3659 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3660 dev_t tmp;
3661
3662 p = xdr_inline_decode(xdr, 8);
3663 if (unlikely(!p))
3664 goto out_overflow;
3665 major = be32_to_cpup(p++);
3666 minor = be32_to_cpup(p);
3667 tmp = MKDEV(major, minor);
3668 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3669 *rdev = tmp;
3670 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3671 ret = NFS_ATTR_FATTR_RDEV;
3672 }
3673 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3674 return ret;
3675 out_overflow:
3676 print_overflow_msg(__func__, xdr);
3677 return -EIO;
3678 }
3679
3680 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3681 {
3682 __be32 *p;
3683 int status = 0;
3684
3685 *res = 0;
3686 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3687 return -EIO;
3688 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3689 p = xdr_inline_decode(xdr, 8);
3690 if (unlikely(!p))
3691 goto out_overflow;
3692 xdr_decode_hyper(p, res);
3693 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3694 }
3695 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3696 return status;
3697 out_overflow:
3698 print_overflow_msg(__func__, xdr);
3699 return -EIO;
3700 }
3701
3702 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3703 {
3704 __be32 *p;
3705 int status = 0;
3706
3707 *res = 0;
3708 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3709 return -EIO;
3710 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3711 p = xdr_inline_decode(xdr, 8);
3712 if (unlikely(!p))
3713 goto out_overflow;
3714 xdr_decode_hyper(p, res);
3715 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3716 }
3717 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3718 return status;
3719 out_overflow:
3720 print_overflow_msg(__func__, xdr);
3721 return -EIO;
3722 }
3723
3724 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3725 {
3726 __be32 *p;
3727 int status = 0;
3728
3729 *res = 0;
3730 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3731 return -EIO;
3732 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3733 p = xdr_inline_decode(xdr, 8);
3734 if (unlikely(!p))
3735 goto out_overflow;
3736 xdr_decode_hyper(p, res);
3737 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3738 }
3739 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3740 return status;
3741 out_overflow:
3742 print_overflow_msg(__func__, xdr);
3743 return -EIO;
3744 }
3745
3746 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3747 {
3748 __be32 *p;
3749 int ret = 0;
3750
3751 *used = 0;
3752 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3753 return -EIO;
3754 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3755 p = xdr_inline_decode(xdr, 8);
3756 if (unlikely(!p))
3757 goto out_overflow;
3758 xdr_decode_hyper(p, used);
3759 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3760 ret = NFS_ATTR_FATTR_SPACE_USED;
3761 }
3762 dprintk("%s: space used=%Lu\n", __func__,
3763 (unsigned long long)*used);
3764 return ret;
3765 out_overflow:
3766 print_overflow_msg(__func__, xdr);
3767 return -EIO;
3768 }
3769
3770 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3771 {
3772 __be32 *p;
3773 uint64_t sec;
3774 uint32_t nsec;
3775
3776 p = xdr_inline_decode(xdr, 12);
3777 if (unlikely(!p))
3778 goto out_overflow;
3779 p = xdr_decode_hyper(p, &sec);
3780 nsec = be32_to_cpup(p);
3781 time->tv_sec = (time_t)sec;
3782 time->tv_nsec = (long)nsec;
3783 return 0;
3784 out_overflow:
3785 print_overflow_msg(__func__, xdr);
3786 return -EIO;
3787 }
3788
3789 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3790 {
3791 int status = 0;
3792
3793 time->tv_sec = 0;
3794 time->tv_nsec = 0;
3795 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3796 return -EIO;
3797 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3798 status = decode_attr_time(xdr, time);
3799 if (status == 0)
3800 status = NFS_ATTR_FATTR_ATIME;
3801 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3802 }
3803 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3804 return status;
3805 }
3806
3807 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3808 {
3809 int status = 0;
3810
3811 time->tv_sec = 0;
3812 time->tv_nsec = 0;
3813 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3814 return -EIO;
3815 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3816 status = decode_attr_time(xdr, time);
3817 if (status == 0)
3818 status = NFS_ATTR_FATTR_CTIME;
3819 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3820 }
3821 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3822 return status;
3823 }
3824
3825 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
3826 struct timespec *time)
3827 {
3828 int status = 0;
3829
3830 time->tv_sec = 0;
3831 time->tv_nsec = 0;
3832 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
3833 return -EIO;
3834 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
3835 status = decode_attr_time(xdr, time);
3836 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
3837 }
3838 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
3839 (long)time->tv_nsec);
3840 return status;
3841 }
3842
3843 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3844 {
3845 int status = 0;
3846
3847 time->tv_sec = 0;
3848 time->tv_nsec = 0;
3849 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3850 return -EIO;
3851 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3852 status = decode_attr_time(xdr, time);
3853 if (status == 0)
3854 status = NFS_ATTR_FATTR_MTIME;
3855 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3856 }
3857 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3858 return status;
3859 }
3860
3861 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3862 {
3863 unsigned int attrwords = XDR_QUADLEN(attrlen);
3864 unsigned int nwords = xdr->p - savep;
3865
3866 if (unlikely(attrwords != nwords)) {
3867 dprintk("%s: server returned incorrect attribute length: "
3868 "%u %c %u\n",
3869 __func__,
3870 attrwords << 2,
3871 (attrwords < nwords) ? '<' : '>',
3872 nwords << 2);
3873 return -EIO;
3874 }
3875 return 0;
3876 }
3877
3878 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3879 {
3880 __be32 *p;
3881
3882 p = xdr_inline_decode(xdr, 20);
3883 if (unlikely(!p))
3884 goto out_overflow;
3885 cinfo->atomic = be32_to_cpup(p++);
3886 p = xdr_decode_hyper(p, &cinfo->before);
3887 xdr_decode_hyper(p, &cinfo->after);
3888 return 0;
3889 out_overflow:
3890 print_overflow_msg(__func__, xdr);
3891 return -EIO;
3892 }
3893
3894 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3895 {
3896 __be32 *p;
3897 uint32_t supp, acc;
3898 int status;
3899
3900 status = decode_op_hdr(xdr, OP_ACCESS);
3901 if (status)
3902 return status;
3903 p = xdr_inline_decode(xdr, 8);
3904 if (unlikely(!p))
3905 goto out_overflow;
3906 supp = be32_to_cpup(p++);
3907 acc = be32_to_cpup(p);
3908 access->supported = supp;
3909 access->access = acc;
3910 return 0;
3911 out_overflow:
3912 print_overflow_msg(__func__, xdr);
3913 return -EIO;
3914 }
3915
3916 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
3917 {
3918 __be32 *p;
3919
3920 p = xdr_inline_decode(xdr, len);
3921 if (likely(p)) {
3922 memcpy(buf, p, len);
3923 return 0;
3924 }
3925 print_overflow_msg(__func__, xdr);
3926 return -EIO;
3927 }
3928
3929 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
3930 {
3931 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
3932 }
3933
3934 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3935 {
3936 int status;
3937
3938 status = decode_op_hdr(xdr, OP_CLOSE);
3939 if (status != -EIO)
3940 nfs_increment_open_seqid(status, res->seqid);
3941 if (!status)
3942 status = decode_stateid(xdr, &res->stateid);
3943 return status;
3944 }
3945
3946 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
3947 {
3948 return decode_opaque_fixed(xdr, verifier, 8);
3949 }
3950
3951 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3952 {
3953 int status;
3954
3955 status = decode_op_hdr(xdr, OP_COMMIT);
3956 if (!status)
3957 status = decode_verifier(xdr, res->verf->verifier);
3958 return status;
3959 }
3960
3961 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3962 {
3963 __be32 *p;
3964 uint32_t bmlen;
3965 int status;
3966
3967 status = decode_op_hdr(xdr, OP_CREATE);
3968 if (status)
3969 return status;
3970 if ((status = decode_change_info(xdr, cinfo)))
3971 return status;
3972 p = xdr_inline_decode(xdr, 4);
3973 if (unlikely(!p))
3974 goto out_overflow;
3975 bmlen = be32_to_cpup(p);
3976 p = xdr_inline_decode(xdr, bmlen << 2);
3977 if (likely(p))
3978 return 0;
3979 out_overflow:
3980 print_overflow_msg(__func__, xdr);
3981 return -EIO;
3982 }
3983
3984 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3985 {
3986 __be32 *savep;
3987 uint32_t attrlen, bitmap[2] = {0};
3988 int status;
3989
3990 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3991 goto xdr_error;
3992 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3993 goto xdr_error;
3994 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3995 goto xdr_error;
3996 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3997 goto xdr_error;
3998 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3999 goto xdr_error;
4000 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4001 goto xdr_error;
4002 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4003 goto xdr_error;
4004 status = verify_attr_len(xdr, savep, attrlen);
4005 xdr_error:
4006 dprintk("%s: xdr returned %d!\n", __func__, -status);
4007 return status;
4008 }
4009
4010 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4011 {
4012 __be32 *savep;
4013 uint32_t attrlen, bitmap[2] = {0};
4014 int status;
4015
4016 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4017 goto xdr_error;
4018 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4019 goto xdr_error;
4020 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4021 goto xdr_error;
4022
4023 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4024 goto xdr_error;
4025 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4026 goto xdr_error;
4027 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4028 goto xdr_error;
4029 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4030 goto xdr_error;
4031 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4032 goto xdr_error;
4033 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4034 goto xdr_error;
4035
4036 status = verify_attr_len(xdr, savep, attrlen);
4037 xdr_error:
4038 dprintk("%s: xdr returned %d!\n", __func__, -status);
4039 return status;
4040 }
4041
4042 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4043 {
4044 __be32 *savep;
4045 uint32_t attrlen, bitmap[2] = {0};
4046 int status;
4047
4048 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4049 goto xdr_error;
4050 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4051 goto xdr_error;
4052 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4053 goto xdr_error;
4054
4055 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4056 goto xdr_error;
4057 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4058 goto xdr_error;
4059
4060 status = verify_attr_len(xdr, savep, attrlen);
4061 xdr_error:
4062 dprintk("%s: xdr returned %d!\n", __func__, -status);
4063 return status;
4064 }
4065
4066 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4067 struct nfs_fattr *fattr, struct nfs_fh *fh,
4068 const struct nfs_server *server, int may_sleep)
4069 {
4070 int status;
4071 umode_t fmode = 0;
4072 uint32_t type;
4073
4074 status = decode_attr_type(xdr, bitmap, &type);
4075 if (status < 0)
4076 goto xdr_error;
4077 fattr->mode = 0;
4078 if (status != 0) {
4079 fattr->mode |= nfs_type2fmt[type];
4080 fattr->valid |= status;
4081 }
4082
4083 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4084 if (status < 0)
4085 goto xdr_error;
4086 fattr->valid |= status;
4087
4088 status = decode_attr_size(xdr, bitmap, &fattr->size);
4089 if (status < 0)
4090 goto xdr_error;
4091 fattr->valid |= status;
4092
4093 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4094 if (status < 0)
4095 goto xdr_error;
4096 fattr->valid |= status;
4097
4098 status = decode_attr_error(xdr, bitmap);
4099 if (status == -NFS4ERR_WRONGSEC) {
4100 nfs_fixup_secinfo_attributes(fattr, fh);
4101 status = 0;
4102 }
4103 if (status < 0)
4104 goto xdr_error;
4105
4106 status = decode_attr_filehandle(xdr, bitmap, fh);
4107 if (status < 0)
4108 goto xdr_error;
4109
4110 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4111 if (status < 0)
4112 goto xdr_error;
4113 fattr->valid |= status;
4114
4115 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
4116 struct nfs4_fs_locations,
4117 fattr));
4118 if (status < 0)
4119 goto xdr_error;
4120 fattr->valid |= status;
4121
4122 status = decode_attr_mode(xdr, bitmap, &fmode);
4123 if (status < 0)
4124 goto xdr_error;
4125 if (status != 0) {
4126 fattr->mode |= fmode;
4127 fattr->valid |= status;
4128 }
4129
4130 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4131 if (status < 0)
4132 goto xdr_error;
4133 fattr->valid |= status;
4134
4135 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, may_sleep);
4136 if (status < 0)
4137 goto xdr_error;
4138 fattr->valid |= status;
4139
4140 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, may_sleep);
4141 if (status < 0)
4142 goto xdr_error;
4143 fattr->valid |= status;
4144
4145 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4146 if (status < 0)
4147 goto xdr_error;
4148 fattr->valid |= status;
4149
4150 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4151 if (status < 0)
4152 goto xdr_error;
4153 fattr->valid |= status;
4154
4155 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4156 if (status < 0)
4157 goto xdr_error;
4158 fattr->valid |= status;
4159
4160 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4161 if (status < 0)
4162 goto xdr_error;
4163 fattr->valid |= status;
4164
4165 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4166 if (status < 0)
4167 goto xdr_error;
4168 fattr->valid |= status;
4169
4170 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4171 if (status < 0)
4172 goto xdr_error;
4173 fattr->valid |= status;
4174
4175 xdr_error:
4176 dprintk("%s: xdr returned %d\n", __func__, -status);
4177 return status;
4178 }
4179
4180 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4181 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
4182 {
4183 __be32 *savep;
4184 uint32_t attrlen,
4185 bitmap[2] = {0};
4186 int status;
4187
4188 status = decode_op_hdr(xdr, OP_GETATTR);
4189 if (status < 0)
4190 goto xdr_error;
4191
4192 status = decode_attr_bitmap(xdr, bitmap);
4193 if (status < 0)
4194 goto xdr_error;
4195
4196 status = decode_attr_length(xdr, &attrlen, &savep);
4197 if (status < 0)
4198 goto xdr_error;
4199
4200 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
4201 if (status < 0)
4202 goto xdr_error;
4203
4204 status = verify_attr_len(xdr, savep, attrlen);
4205 xdr_error:
4206 dprintk("%s: xdr returned %d\n", __func__, -status);
4207 return status;
4208 }
4209
4210 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4211 const struct nfs_server *server, int may_sleep)
4212 {
4213 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
4214 }
4215
4216 /*
4217 * Decode potentially multiple layout types. Currently we only support
4218 * one layout driver per file system.
4219 */
4220 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4221 uint32_t *layouttype)
4222 {
4223 uint32_t *p;
4224 int num;
4225
4226 p = xdr_inline_decode(xdr, 4);
4227 if (unlikely(!p))
4228 goto out_overflow;
4229 num = be32_to_cpup(p);
4230
4231 /* pNFS is not supported by the underlying file system */
4232 if (num == 0) {
4233 *layouttype = 0;
4234 return 0;
4235 }
4236 if (num > 1)
4237 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
4238 "per filesystem not supported\n", __func__);
4239
4240 /* Decode and set first layout type, move xdr->p past unused types */
4241 p = xdr_inline_decode(xdr, num * 4);
4242 if (unlikely(!p))
4243 goto out_overflow;
4244 *layouttype = be32_to_cpup(p);
4245 return 0;
4246 out_overflow:
4247 print_overflow_msg(__func__, xdr);
4248 return -EIO;
4249 }
4250
4251 /*
4252 * The type of file system exported.
4253 * Note we must ensure that layouttype is set in any non-error case.
4254 */
4255 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4256 uint32_t *layouttype)
4257 {
4258 int status = 0;
4259
4260 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4261 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4262 return -EIO;
4263 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4264 status = decode_first_pnfs_layout_type(xdr, layouttype);
4265 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4266 } else
4267 *layouttype = 0;
4268 return status;
4269 }
4270
4271 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4272 {
4273 __be32 *savep;
4274 uint32_t attrlen, bitmap[2];
4275 int status;
4276
4277 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4278 goto xdr_error;
4279 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4280 goto xdr_error;
4281 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4282 goto xdr_error;
4283
4284 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4285
4286 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4287 goto xdr_error;
4288 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4289 goto xdr_error;
4290 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4291 goto xdr_error;
4292 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4293 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4294 goto xdr_error;
4295 fsinfo->wtpref = fsinfo->wtmax;
4296 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4297 if (status != 0)
4298 goto xdr_error;
4299 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4300 if (status != 0)
4301 goto xdr_error;
4302
4303 status = verify_attr_len(xdr, savep, attrlen);
4304 xdr_error:
4305 dprintk("%s: xdr returned %d!\n", __func__, -status);
4306 return status;
4307 }
4308
4309 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4310 {
4311 __be32 *p;
4312 uint32_t len;
4313 int status;
4314
4315 /* Zero handle first to allow comparisons */
4316 memset(fh, 0, sizeof(*fh));
4317
4318 status = decode_op_hdr(xdr, OP_GETFH);
4319 if (status)
4320 return status;
4321
4322 p = xdr_inline_decode(xdr, 4);
4323 if (unlikely(!p))
4324 goto out_overflow;
4325 len = be32_to_cpup(p);
4326 if (len > NFS4_FHSIZE)
4327 return -EIO;
4328 fh->size = len;
4329 p = xdr_inline_decode(xdr, len);
4330 if (unlikely(!p))
4331 goto out_overflow;
4332 memcpy(fh->data, p, len);
4333 return 0;
4334 out_overflow:
4335 print_overflow_msg(__func__, xdr);
4336 return -EIO;
4337 }
4338
4339 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4340 {
4341 int status;
4342
4343 status = decode_op_hdr(xdr, OP_LINK);
4344 if (status)
4345 return status;
4346 return decode_change_info(xdr, cinfo);
4347 }
4348
4349 /*
4350 * We create the owner, so we know a proper owner.id length is 4.
4351 */
4352 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4353 {
4354 uint64_t offset, length, clientid;
4355 __be32 *p;
4356 uint32_t namelen, type;
4357
4358 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4359 if (unlikely(!p))
4360 goto out_overflow;
4361 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4362 p = xdr_decode_hyper(p, &length);
4363 type = be32_to_cpup(p++); /* 4 byte read */
4364 if (fl != NULL) { /* manipulate file lock */
4365 fl->fl_start = (loff_t)offset;
4366 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4367 if (length == ~(uint64_t)0)
4368 fl->fl_end = OFFSET_MAX;
4369 fl->fl_type = F_WRLCK;
4370 if (type & 1)
4371 fl->fl_type = F_RDLCK;
4372 fl->fl_pid = 0;
4373 }
4374 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4375 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4376 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4377 if (likely(p))
4378 return -NFS4ERR_DENIED;
4379 out_overflow:
4380 print_overflow_msg(__func__, xdr);
4381 return -EIO;
4382 }
4383
4384 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4385 {
4386 int status;
4387
4388 status = decode_op_hdr(xdr, OP_LOCK);
4389 if (status == -EIO)
4390 goto out;
4391 if (status == 0) {
4392 status = decode_stateid(xdr, &res->stateid);
4393 if (unlikely(status))
4394 goto out;
4395 } else if (status == -NFS4ERR_DENIED)
4396 status = decode_lock_denied(xdr, NULL);
4397 if (res->open_seqid != NULL)
4398 nfs_increment_open_seqid(status, res->open_seqid);
4399 nfs_increment_lock_seqid(status, res->lock_seqid);
4400 out:
4401 return status;
4402 }
4403
4404 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4405 {
4406 int status;
4407 status = decode_op_hdr(xdr, OP_LOCKT);
4408 if (status == -NFS4ERR_DENIED)
4409 return decode_lock_denied(xdr, res->denied);
4410 return status;
4411 }
4412
4413 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4414 {
4415 int status;
4416
4417 status = decode_op_hdr(xdr, OP_LOCKU);
4418 if (status != -EIO)
4419 nfs_increment_lock_seqid(status, res->seqid);
4420 if (status == 0)
4421 status = decode_stateid(xdr, &res->stateid);
4422 return status;
4423 }
4424
4425 static int decode_release_lockowner(struct xdr_stream *xdr)
4426 {
4427 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4428 }
4429
4430 static int decode_lookup(struct xdr_stream *xdr)
4431 {
4432 return decode_op_hdr(xdr, OP_LOOKUP);
4433 }
4434
4435 /* This is too sick! */
4436 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4437 {
4438 __be32 *p;
4439 uint32_t limit_type, nblocks, blocksize;
4440
4441 p = xdr_inline_decode(xdr, 12);
4442 if (unlikely(!p))
4443 goto out_overflow;
4444 limit_type = be32_to_cpup(p++);
4445 switch (limit_type) {
4446 case 1:
4447 xdr_decode_hyper(p, maxsize);
4448 break;
4449 case 2:
4450 nblocks = be32_to_cpup(p++);
4451 blocksize = be32_to_cpup(p);
4452 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4453 }
4454 return 0;
4455 out_overflow:
4456 print_overflow_msg(__func__, xdr);
4457 return -EIO;
4458 }
4459
4460 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4461 {
4462 __be32 *p;
4463 uint32_t delegation_type;
4464 int status;
4465
4466 p = xdr_inline_decode(xdr, 4);
4467 if (unlikely(!p))
4468 goto out_overflow;
4469 delegation_type = be32_to_cpup(p);
4470 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4471 res->delegation_type = 0;
4472 return 0;
4473 }
4474 status = decode_stateid(xdr, &res->delegation);
4475 if (unlikely(status))
4476 return status;
4477 p = xdr_inline_decode(xdr, 4);
4478 if (unlikely(!p))
4479 goto out_overflow;
4480 res->do_recall = be32_to_cpup(p);
4481
4482 switch (delegation_type) {
4483 case NFS4_OPEN_DELEGATE_READ:
4484 res->delegation_type = FMODE_READ;
4485 break;
4486 case NFS4_OPEN_DELEGATE_WRITE:
4487 res->delegation_type = FMODE_WRITE|FMODE_READ;
4488 if (decode_space_limit(xdr, &res->maxsize) < 0)
4489 return -EIO;
4490 }
4491 return decode_ace(xdr, NULL, res->server->nfs_client);
4492 out_overflow:
4493 print_overflow_msg(__func__, xdr);
4494 return -EIO;
4495 }
4496
4497 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4498 {
4499 __be32 *p;
4500 uint32_t savewords, bmlen, i;
4501 int status;
4502
4503 status = decode_op_hdr(xdr, OP_OPEN);
4504 if (status != -EIO)
4505 nfs_increment_open_seqid(status, res->seqid);
4506 if (!status)
4507 status = decode_stateid(xdr, &res->stateid);
4508 if (unlikely(status))
4509 return status;
4510
4511 decode_change_info(xdr, &res->cinfo);
4512
4513 p = xdr_inline_decode(xdr, 8);
4514 if (unlikely(!p))
4515 goto out_overflow;
4516 res->rflags = be32_to_cpup(p++);
4517 bmlen = be32_to_cpup(p);
4518 if (bmlen > 10)
4519 goto xdr_error;
4520
4521 p = xdr_inline_decode(xdr, bmlen << 2);
4522 if (unlikely(!p))
4523 goto out_overflow;
4524 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4525 for (i = 0; i < savewords; ++i)
4526 res->attrset[i] = be32_to_cpup(p++);
4527 for (; i < NFS4_BITMAP_SIZE; i++)
4528 res->attrset[i] = 0;
4529
4530 return decode_delegation(xdr, res);
4531 xdr_error:
4532 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4533 return -EIO;
4534 out_overflow:
4535 print_overflow_msg(__func__, xdr);
4536 return -EIO;
4537 }
4538
4539 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4540 {
4541 int status;
4542
4543 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4544 if (status != -EIO)
4545 nfs_increment_open_seqid(status, res->seqid);
4546 if (!status)
4547 status = decode_stateid(xdr, &res->stateid);
4548 return status;
4549 }
4550
4551 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4552 {
4553 int status;
4554
4555 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4556 if (status != -EIO)
4557 nfs_increment_open_seqid(status, res->seqid);
4558 if (!status)
4559 status = decode_stateid(xdr, &res->stateid);
4560 return status;
4561 }
4562
4563 static int decode_putfh(struct xdr_stream *xdr)
4564 {
4565 return decode_op_hdr(xdr, OP_PUTFH);
4566 }
4567
4568 static int decode_putrootfh(struct xdr_stream *xdr)
4569 {
4570 return decode_op_hdr(xdr, OP_PUTROOTFH);
4571 }
4572
4573 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4574 {
4575 struct kvec *iov = req->rq_rcv_buf.head;
4576 __be32 *p;
4577 uint32_t count, eof, recvd, hdrlen;
4578 int status;
4579
4580 status = decode_op_hdr(xdr, OP_READ);
4581 if (status)
4582 return status;
4583 p = xdr_inline_decode(xdr, 8);
4584 if (unlikely(!p))
4585 goto out_overflow;
4586 eof = be32_to_cpup(p++);
4587 count = be32_to_cpup(p);
4588 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
4589 recvd = req->rq_rcv_buf.len - hdrlen;
4590 if (count > recvd) {
4591 dprintk("NFS: server cheating in read reply: "
4592 "count %u > recvd %u\n", count, recvd);
4593 count = recvd;
4594 eof = 0;
4595 }
4596 xdr_read_pages(xdr, count);
4597 res->eof = eof;
4598 res->count = count;
4599 return 0;
4600 out_overflow:
4601 print_overflow_msg(__func__, xdr);
4602 return -EIO;
4603 }
4604
4605 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4606 {
4607 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4608 struct kvec *iov = rcvbuf->head;
4609 size_t hdrlen;
4610 u32 recvd, pglen = rcvbuf->page_len;
4611 int status;
4612
4613 status = decode_op_hdr(xdr, OP_READDIR);
4614 if (!status)
4615 status = decode_verifier(xdr, readdir->verifier.data);
4616 if (unlikely(status))
4617 return status;
4618 dprintk("%s: verifier = %08x:%08x\n",
4619 __func__,
4620 ((u32 *)readdir->verifier.data)[0],
4621 ((u32 *)readdir->verifier.data)[1]);
4622
4623
4624 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4625 recvd = rcvbuf->len - hdrlen;
4626 if (pglen > recvd)
4627 pglen = recvd;
4628 xdr_read_pages(xdr, pglen);
4629
4630
4631 return pglen;
4632 }
4633
4634 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4635 {
4636 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4637 struct kvec *iov = rcvbuf->head;
4638 size_t hdrlen;
4639 u32 len, recvd;
4640 __be32 *p;
4641 int status;
4642
4643 status = decode_op_hdr(xdr, OP_READLINK);
4644 if (status)
4645 return status;
4646
4647 /* Convert length of symlink */
4648 p = xdr_inline_decode(xdr, 4);
4649 if (unlikely(!p))
4650 goto out_overflow;
4651 len = be32_to_cpup(p);
4652 if (len >= rcvbuf->page_len || len <= 0) {
4653 dprintk("nfs: server returned giant symlink!\n");
4654 return -ENAMETOOLONG;
4655 }
4656 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4657 recvd = req->rq_rcv_buf.len - hdrlen;
4658 if (recvd < len) {
4659 dprintk("NFS: server cheating in readlink reply: "
4660 "count %u > recvd %u\n", len, recvd);
4661 return -EIO;
4662 }
4663 xdr_read_pages(xdr, len);
4664 /*
4665 * The XDR encode routine has set things up so that
4666 * the link text will be copied directly into the
4667 * buffer. We just have to do overflow-checking,
4668 * and and null-terminate the text (the VFS expects
4669 * null-termination).
4670 */
4671 xdr_terminate_string(rcvbuf, len);
4672 return 0;
4673 out_overflow:
4674 print_overflow_msg(__func__, xdr);
4675 return -EIO;
4676 }
4677
4678 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4679 {
4680 int status;
4681
4682 status = decode_op_hdr(xdr, OP_REMOVE);
4683 if (status)
4684 goto out;
4685 status = decode_change_info(xdr, cinfo);
4686 out:
4687 return status;
4688 }
4689
4690 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4691 struct nfs4_change_info *new_cinfo)
4692 {
4693 int status;
4694
4695 status = decode_op_hdr(xdr, OP_RENAME);
4696 if (status)
4697 goto out;
4698 if ((status = decode_change_info(xdr, old_cinfo)))
4699 goto out;
4700 status = decode_change_info(xdr, new_cinfo);
4701 out:
4702 return status;
4703 }
4704
4705 static int decode_renew(struct xdr_stream *xdr)
4706 {
4707 return decode_op_hdr(xdr, OP_RENEW);
4708 }
4709
4710 static int
4711 decode_restorefh(struct xdr_stream *xdr)
4712 {
4713 return decode_op_hdr(xdr, OP_RESTOREFH);
4714 }
4715
4716 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4717 size_t *acl_len)
4718 {
4719 __be32 *savep;
4720 uint32_t attrlen,
4721 bitmap[2] = {0};
4722 struct kvec *iov = req->rq_rcv_buf.head;
4723 int status;
4724
4725 *acl_len = 0;
4726 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4727 goto out;
4728 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4729 goto out;
4730 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4731 goto out;
4732
4733 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4734 return -EIO;
4735 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4736 size_t hdrlen;
4737 u32 recvd;
4738
4739 /* We ignore &savep and don't do consistency checks on
4740 * the attr length. Let userspace figure it out.... */
4741 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4742 recvd = req->rq_rcv_buf.len - hdrlen;
4743 if (attrlen > recvd) {
4744 dprintk("NFS: server cheating in getattr"
4745 " acl reply: attrlen %u > recvd %u\n",
4746 attrlen, recvd);
4747 return -EINVAL;
4748 }
4749 xdr_read_pages(xdr, attrlen);
4750 *acl_len = attrlen;
4751 } else
4752 status = -EOPNOTSUPP;
4753
4754 out:
4755 return status;
4756 }
4757
4758 static int
4759 decode_savefh(struct xdr_stream *xdr)
4760 {
4761 return decode_op_hdr(xdr, OP_SAVEFH);
4762 }
4763
4764 static int decode_setattr(struct xdr_stream *xdr)
4765 {
4766 __be32 *p;
4767 uint32_t bmlen;
4768 int status;
4769
4770 status = decode_op_hdr(xdr, OP_SETATTR);
4771 if (status)
4772 return status;
4773 p = xdr_inline_decode(xdr, 4);
4774 if (unlikely(!p))
4775 goto out_overflow;
4776 bmlen = be32_to_cpup(p);
4777 p = xdr_inline_decode(xdr, bmlen << 2);
4778 if (likely(p))
4779 return 0;
4780 out_overflow:
4781 print_overflow_msg(__func__, xdr);
4782 return -EIO;
4783 }
4784
4785 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
4786 {
4787 __be32 *p;
4788 uint32_t opnum;
4789 int32_t nfserr;
4790
4791 p = xdr_inline_decode(xdr, 8);
4792 if (unlikely(!p))
4793 goto out_overflow;
4794 opnum = be32_to_cpup(p++);
4795 if (opnum != OP_SETCLIENTID) {
4796 dprintk("nfs: decode_setclientid: Server returned operation"
4797 " %d\n", opnum);
4798 return -EIO;
4799 }
4800 nfserr = be32_to_cpup(p);
4801 if (nfserr == NFS_OK) {
4802 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4803 if (unlikely(!p))
4804 goto out_overflow;
4805 p = xdr_decode_hyper(p, &res->clientid);
4806 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
4807 } else if (nfserr == NFSERR_CLID_INUSE) {
4808 uint32_t len;
4809
4810 /* skip netid string */
4811 p = xdr_inline_decode(xdr, 4);
4812 if (unlikely(!p))
4813 goto out_overflow;
4814 len = be32_to_cpup(p);
4815 p = xdr_inline_decode(xdr, len);
4816 if (unlikely(!p))
4817 goto out_overflow;
4818
4819 /* skip uaddr string */
4820 p = xdr_inline_decode(xdr, 4);
4821 if (unlikely(!p))
4822 goto out_overflow;
4823 len = be32_to_cpup(p);
4824 p = xdr_inline_decode(xdr, len);
4825 if (unlikely(!p))
4826 goto out_overflow;
4827 return -NFSERR_CLID_INUSE;
4828 } else
4829 return nfs4_stat_to_errno(nfserr);
4830
4831 return 0;
4832 out_overflow:
4833 print_overflow_msg(__func__, xdr);
4834 return -EIO;
4835 }
4836
4837 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4838 {
4839 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4840 }
4841
4842 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4843 {
4844 __be32 *p;
4845 int status;
4846
4847 status = decode_op_hdr(xdr, OP_WRITE);
4848 if (status)
4849 return status;
4850
4851 p = xdr_inline_decode(xdr, 16);
4852 if (unlikely(!p))
4853 goto out_overflow;
4854 res->count = be32_to_cpup(p++);
4855 res->verf->committed = be32_to_cpup(p++);
4856 memcpy(res->verf->verifier, p, 8);
4857 return 0;
4858 out_overflow:
4859 print_overflow_msg(__func__, xdr);
4860 return -EIO;
4861 }
4862
4863 static int decode_delegreturn(struct xdr_stream *xdr)
4864 {
4865 return decode_op_hdr(xdr, OP_DELEGRETURN);
4866 }
4867
4868 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
4869 {
4870 __be32 *p;
4871
4872 p = xdr_inline_decode(xdr, 4);
4873 if (unlikely(!p))
4874 goto out_overflow;
4875 flavor->gss.sec_oid4.len = be32_to_cpup(p);
4876 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
4877 goto out_err;
4878
4879 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
4880 if (unlikely(!p))
4881 goto out_overflow;
4882 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
4883
4884 p = xdr_inline_decode(xdr, 8);
4885 if (unlikely(!p))
4886 goto out_overflow;
4887 flavor->gss.qop4 = be32_to_cpup(p++);
4888 flavor->gss.service = be32_to_cpup(p);
4889
4890 return 0;
4891
4892 out_overflow:
4893 print_overflow_msg(__func__, xdr);
4894 return -EIO;
4895 out_err:
4896 return -EINVAL;
4897 }
4898
4899 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
4900 {
4901 struct nfs4_secinfo_flavor *sec_flavor;
4902 int status;
4903 __be32 *p;
4904 int i, num_flavors;
4905
4906 status = decode_op_hdr(xdr, OP_SECINFO);
4907 if (status)
4908 goto out;
4909 p = xdr_inline_decode(xdr, 4);
4910 if (unlikely(!p))
4911 goto out_overflow;
4912
4913 res->flavors->num_flavors = 0;
4914 num_flavors = be32_to_cpup(p);
4915
4916 for (i = 0; i < num_flavors; i++) {
4917 sec_flavor = &res->flavors->flavors[i];
4918 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
4919 break;
4920
4921 p = xdr_inline_decode(xdr, 4);
4922 if (unlikely(!p))
4923 goto out_overflow;
4924 sec_flavor->flavor = be32_to_cpup(p);
4925
4926 if (sec_flavor->flavor == RPC_AUTH_GSS) {
4927 status = decode_secinfo_gss(xdr, sec_flavor);
4928 if (status)
4929 goto out;
4930 }
4931 res->flavors->num_flavors++;
4932 }
4933
4934 out:
4935 return status;
4936 out_overflow:
4937 print_overflow_msg(__func__, xdr);
4938 return -EIO;
4939 }
4940
4941 #if defined(CONFIG_NFS_V4_1)
4942 static int decode_exchange_id(struct xdr_stream *xdr,
4943 struct nfs41_exchange_id_res *res)
4944 {
4945 __be32 *p;
4946 uint32_t dummy;
4947 char *dummy_str;
4948 int status;
4949 struct nfs_client *clp = res->client;
4950
4951 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4952 if (status)
4953 return status;
4954
4955 p = xdr_inline_decode(xdr, 8);
4956 if (unlikely(!p))
4957 goto out_overflow;
4958 xdr_decode_hyper(p, &clp->cl_clientid);
4959 p = xdr_inline_decode(xdr, 12);
4960 if (unlikely(!p))
4961 goto out_overflow;
4962 clp->cl_seqid = be32_to_cpup(p++);
4963 clp->cl_exchange_flags = be32_to_cpup(p++);
4964
4965 /* We ask for SP4_NONE */
4966 dummy = be32_to_cpup(p);
4967 if (dummy != SP4_NONE)
4968 return -EIO;
4969
4970 /* Throw away minor_id */
4971 p = xdr_inline_decode(xdr, 8);
4972 if (unlikely(!p))
4973 goto out_overflow;
4974
4975 /* Throw away Major id */
4976 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4977 if (unlikely(status))
4978 return status;
4979
4980 /* Throw away server_scope */
4981 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4982 if (unlikely(status))
4983 return status;
4984
4985 /* Throw away Implementation id array */
4986 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4987 if (unlikely(status))
4988 return status;
4989
4990 return 0;
4991 out_overflow:
4992 print_overflow_msg(__func__, xdr);
4993 return -EIO;
4994 }
4995
4996 static int decode_chan_attrs(struct xdr_stream *xdr,
4997 struct nfs4_channel_attrs *attrs)
4998 {
4999 __be32 *p;
5000 u32 nr_attrs;
5001
5002 p = xdr_inline_decode(xdr, 28);
5003 if (unlikely(!p))
5004 goto out_overflow;
5005 attrs->headerpadsz = be32_to_cpup(p++);
5006 attrs->max_rqst_sz = be32_to_cpup(p++);
5007 attrs->max_resp_sz = be32_to_cpup(p++);
5008 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5009 attrs->max_ops = be32_to_cpup(p++);
5010 attrs->max_reqs = be32_to_cpup(p++);
5011 nr_attrs = be32_to_cpup(p);
5012 if (unlikely(nr_attrs > 1)) {
5013 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
5014 __func__, nr_attrs);
5015 return -EINVAL;
5016 }
5017 if (nr_attrs == 1) {
5018 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5019 if (unlikely(!p))
5020 goto out_overflow;
5021 }
5022 return 0;
5023 out_overflow:
5024 print_overflow_msg(__func__, xdr);
5025 return -EIO;
5026 }
5027
5028 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5029 {
5030 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5031 }
5032
5033 static int decode_create_session(struct xdr_stream *xdr,
5034 struct nfs41_create_session_res *res)
5035 {
5036 __be32 *p;
5037 int status;
5038 struct nfs_client *clp = res->client;
5039 struct nfs4_session *session = clp->cl_session;
5040
5041 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5042 if (!status)
5043 status = decode_sessionid(xdr, &session->sess_id);
5044 if (unlikely(status))
5045 return status;
5046
5047 /* seqid, flags */
5048 p = xdr_inline_decode(xdr, 8);
5049 if (unlikely(!p))
5050 goto out_overflow;
5051 clp->cl_seqid = be32_to_cpup(p++);
5052 session->flags = be32_to_cpup(p);
5053
5054 /* Channel attributes */
5055 status = decode_chan_attrs(xdr, &session->fc_attrs);
5056 if (!status)
5057 status = decode_chan_attrs(xdr, &session->bc_attrs);
5058 return status;
5059 out_overflow:
5060 print_overflow_msg(__func__, xdr);
5061 return -EIO;
5062 }
5063
5064 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5065 {
5066 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5067 }
5068
5069 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5070 {
5071 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5072 }
5073 #endif /* CONFIG_NFS_V4_1 */
5074
5075 static int decode_sequence(struct xdr_stream *xdr,
5076 struct nfs4_sequence_res *res,
5077 struct rpc_rqst *rqstp)
5078 {
5079 #if defined(CONFIG_NFS_V4_1)
5080 struct nfs4_sessionid id;
5081 u32 dummy;
5082 int status;
5083 __be32 *p;
5084
5085 if (!res->sr_session)
5086 return 0;
5087
5088 status = decode_op_hdr(xdr, OP_SEQUENCE);
5089 if (!status)
5090 status = decode_sessionid(xdr, &id);
5091 if (unlikely(status))
5092 goto out_err;
5093
5094 /*
5095 * If the server returns different values for sessionID, slotID or
5096 * sequence number, the server is looney tunes.
5097 */
5098 status = -EREMOTEIO;
5099
5100 if (memcmp(id.data, res->sr_session->sess_id.data,
5101 NFS4_MAX_SESSIONID_LEN)) {
5102 dprintk("%s Invalid session id\n", __func__);
5103 goto out_err;
5104 }
5105
5106 p = xdr_inline_decode(xdr, 20);
5107 if (unlikely(!p))
5108 goto out_overflow;
5109
5110 /* seqid */
5111 dummy = be32_to_cpup(p++);
5112 if (dummy != res->sr_slot->seq_nr) {
5113 dprintk("%s Invalid sequence number\n", __func__);
5114 goto out_err;
5115 }
5116 /* slot id */
5117 dummy = be32_to_cpup(p++);
5118 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5119 dprintk("%s Invalid slot id\n", __func__);
5120 goto out_err;
5121 }
5122 /* highest slot id - currently not processed */
5123 dummy = be32_to_cpup(p++);
5124 /* target highest slot id - currently not processed */
5125 dummy = be32_to_cpup(p++);
5126 /* result flags */
5127 res->sr_status_flags = be32_to_cpup(p);
5128 status = 0;
5129 out_err:
5130 res->sr_status = status;
5131 return status;
5132 out_overflow:
5133 print_overflow_msg(__func__, xdr);
5134 status = -EIO;
5135 goto out_err;
5136 #else /* CONFIG_NFS_V4_1 */
5137 return 0;
5138 #endif /* CONFIG_NFS_V4_1 */
5139 }
5140
5141 #if defined(CONFIG_NFS_V4_1)
5142
5143 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5144 struct pnfs_device *pdev)
5145 {
5146 __be32 *p;
5147 uint32_t len, type;
5148 int status;
5149
5150 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5151 if (status) {
5152 if (status == -ETOOSMALL) {
5153 p = xdr_inline_decode(xdr, 4);
5154 if (unlikely(!p))
5155 goto out_overflow;
5156 pdev->mincount = be32_to_cpup(p);
5157 dprintk("%s: Min count too small. mincnt = %u\n",
5158 __func__, pdev->mincount);
5159 }
5160 return status;
5161 }
5162
5163 p = xdr_inline_decode(xdr, 8);
5164 if (unlikely(!p))
5165 goto out_overflow;
5166 type = be32_to_cpup(p++);
5167 if (type != pdev->layout_type) {
5168 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5169 __func__, pdev->layout_type, type);
5170 return -EINVAL;
5171 }
5172 /*
5173 * Get the length of the opaque device_addr4. xdr_read_pages places
5174 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5175 * and places the remaining xdr data in xdr_buf->tail
5176 */
5177 pdev->mincount = be32_to_cpup(p);
5178 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5179
5180 /* Parse notification bitmap, verifying that it is zero. */
5181 p = xdr_inline_decode(xdr, 4);
5182 if (unlikely(!p))
5183 goto out_overflow;
5184 len = be32_to_cpup(p);
5185 if (len) {
5186 uint32_t i;
5187
5188 p = xdr_inline_decode(xdr, 4 * len);
5189 if (unlikely(!p))
5190 goto out_overflow;
5191 for (i = 0; i < len; i++, p++) {
5192 if (be32_to_cpup(p)) {
5193 dprintk("%s: notifications not supported\n",
5194 __func__);
5195 return -EIO;
5196 }
5197 }
5198 }
5199 return 0;
5200 out_overflow:
5201 print_overflow_msg(__func__, xdr);
5202 return -EIO;
5203 }
5204
5205 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5206 struct nfs4_layoutget_res *res)
5207 {
5208 __be32 *p;
5209 int status;
5210 u32 layout_count;
5211 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5212 struct kvec *iov = rcvbuf->head;
5213 u32 hdrlen, recvd;
5214
5215 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5216 if (status)
5217 return status;
5218 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
5219 if (unlikely(!p))
5220 goto out_overflow;
5221 res->return_on_close = be32_to_cpup(p++);
5222 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
5223 layout_count = be32_to_cpup(p);
5224 if (!layout_count) {
5225 dprintk("%s: server responded with empty layout array\n",
5226 __func__);
5227 return -EINVAL;
5228 }
5229
5230 p = xdr_inline_decode(xdr, 28);
5231 if (unlikely(!p))
5232 goto out_overflow;
5233 p = xdr_decode_hyper(p, &res->range.offset);
5234 p = xdr_decode_hyper(p, &res->range.length);
5235 res->range.iomode = be32_to_cpup(p++);
5236 res->type = be32_to_cpup(p++);
5237 res->layoutp->len = be32_to_cpup(p);
5238
5239 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5240 __func__,
5241 (unsigned long)res->range.offset,
5242 (unsigned long)res->range.length,
5243 res->range.iomode,
5244 res->type,
5245 res->layoutp->len);
5246
5247 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
5248 recvd = req->rq_rcv_buf.len - hdrlen;
5249 if (res->layoutp->len > recvd) {
5250 dprintk("NFS: server cheating in layoutget reply: "
5251 "layout len %u > recvd %u\n",
5252 res->layoutp->len, recvd);
5253 return -EINVAL;
5254 }
5255
5256 xdr_read_pages(xdr, res->layoutp->len);
5257
5258 if (layout_count > 1) {
5259 /* We only handle a length one array at the moment. Any
5260 * further entries are just ignored. Note that this means
5261 * the client may see a response that is less than the
5262 * minimum it requested.
5263 */
5264 dprintk("%s: server responded with %d layouts, dropping tail\n",
5265 __func__, layout_count);
5266 }
5267
5268 return 0;
5269 out_overflow:
5270 print_overflow_msg(__func__, xdr);
5271 return -EIO;
5272 }
5273
5274 static int decode_layoutreturn(struct xdr_stream *xdr,
5275 struct nfs4_layoutreturn_res *res)
5276 {
5277 __be32 *p;
5278 int status;
5279
5280 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5281 if (status)
5282 return status;
5283 p = xdr_inline_decode(xdr, 4);
5284 if (unlikely(!p))
5285 goto out_overflow;
5286 res->lrs_present = be32_to_cpup(p);
5287 if (res->lrs_present)
5288 status = decode_stateid(xdr, &res->stateid);
5289 return status;
5290 out_overflow:
5291 print_overflow_msg(__func__, xdr);
5292 return -EIO;
5293 }
5294
5295 static int decode_layoutcommit(struct xdr_stream *xdr,
5296 struct rpc_rqst *req,
5297 struct nfs4_layoutcommit_res *res)
5298 {
5299 __be32 *p;
5300 __u32 sizechanged;
5301 int status;
5302
5303 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5304 if (status)
5305 return status;
5306
5307 p = xdr_inline_decode(xdr, 4);
5308 if (unlikely(!p))
5309 goto out_overflow;
5310 sizechanged = be32_to_cpup(p);
5311
5312 if (sizechanged) {
5313 /* throw away new size */
5314 p = xdr_inline_decode(xdr, 8);
5315 if (unlikely(!p))
5316 goto out_overflow;
5317 }
5318 return 0;
5319 out_overflow:
5320 print_overflow_msg(__func__, xdr);
5321 return -EIO;
5322 }
5323 #endif /* CONFIG_NFS_V4_1 */
5324
5325 /*
5326 * END OF "GENERIC" DECODE ROUTINES.
5327 */
5328
5329 /*
5330 * Decode OPEN_DOWNGRADE response
5331 */
5332 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5333 struct xdr_stream *xdr,
5334 struct nfs_closeres *res)
5335 {
5336 struct compound_hdr hdr;
5337 int status;
5338
5339 status = decode_compound_hdr(xdr, &hdr);
5340 if (status)
5341 goto out;
5342 status = decode_sequence(xdr, &res->seq_res, rqstp);
5343 if (status)
5344 goto out;
5345 status = decode_putfh(xdr);
5346 if (status)
5347 goto out;
5348 status = decode_open_downgrade(xdr, res);
5349 if (status != 0)
5350 goto out;
5351 decode_getfattr(xdr, res->fattr, res->server,
5352 !RPC_IS_ASYNC(rqstp->rq_task));
5353 out:
5354 return status;
5355 }
5356
5357 /*
5358 * Decode ACCESS response
5359 */
5360 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5361 struct nfs4_accessres *res)
5362 {
5363 struct compound_hdr hdr;
5364 int status;
5365
5366 status = decode_compound_hdr(xdr, &hdr);
5367 if (status)
5368 goto out;
5369 status = decode_sequence(xdr, &res->seq_res, rqstp);
5370 if (status)
5371 goto out;
5372 status = decode_putfh(xdr);
5373 if (status != 0)
5374 goto out;
5375 status = decode_access(xdr, res);
5376 if (status != 0)
5377 goto out;
5378 decode_getfattr(xdr, res->fattr, res->server,
5379 !RPC_IS_ASYNC(rqstp->rq_task));
5380 out:
5381 return status;
5382 }
5383
5384 /*
5385 * Decode LOOKUP response
5386 */
5387 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5388 struct nfs4_lookup_res *res)
5389 {
5390 struct compound_hdr hdr;
5391 int status;
5392
5393 status = decode_compound_hdr(xdr, &hdr);
5394 if (status)
5395 goto out;
5396 status = decode_sequence(xdr, &res->seq_res, rqstp);
5397 if (status)
5398 goto out;
5399 status = decode_putfh(xdr);
5400 if (status)
5401 goto out;
5402 status = decode_lookup(xdr);
5403 if (status)
5404 goto out;
5405 status = decode_getfh(xdr, res->fh);
5406 if (status)
5407 goto out;
5408 status = decode_getfattr(xdr, res->fattr, res->server
5409 ,!RPC_IS_ASYNC(rqstp->rq_task));
5410 out:
5411 return status;
5412 }
5413
5414 /*
5415 * Decode LOOKUP_ROOT response
5416 */
5417 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5418 struct xdr_stream *xdr,
5419 struct nfs4_lookup_res *res)
5420 {
5421 struct compound_hdr hdr;
5422 int status;
5423
5424 status = decode_compound_hdr(xdr, &hdr);
5425 if (status)
5426 goto out;
5427 status = decode_sequence(xdr, &res->seq_res, rqstp);
5428 if (status)
5429 goto out;
5430 status = decode_putrootfh(xdr);
5431 if (status)
5432 goto out;
5433 status = decode_getfh(xdr, res->fh);
5434 if (status == 0)
5435 status = decode_getfattr(xdr, res->fattr, res->server,
5436 !RPC_IS_ASYNC(rqstp->rq_task));
5437 out:
5438 return status;
5439 }
5440
5441 /*
5442 * Decode REMOVE response
5443 */
5444 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5445 struct nfs_removeres *res)
5446 {
5447 struct compound_hdr hdr;
5448 int status;
5449
5450 status = decode_compound_hdr(xdr, &hdr);
5451 if (status)
5452 goto out;
5453 status = decode_sequence(xdr, &res->seq_res, rqstp);
5454 if (status)
5455 goto out;
5456 status = decode_putfh(xdr);
5457 if (status)
5458 goto out;
5459 status = decode_remove(xdr, &res->cinfo);
5460 if (status)
5461 goto out;
5462 decode_getfattr(xdr, res->dir_attr, res->server,
5463 !RPC_IS_ASYNC(rqstp->rq_task));
5464 out:
5465 return status;
5466 }
5467
5468 /*
5469 * Decode RENAME response
5470 */
5471 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5472 struct nfs_renameres *res)
5473 {
5474 struct compound_hdr hdr;
5475 int status;
5476
5477 status = decode_compound_hdr(xdr, &hdr);
5478 if (status)
5479 goto out;
5480 status = decode_sequence(xdr, &res->seq_res, rqstp);
5481 if (status)
5482 goto out;
5483 status = decode_putfh(xdr);
5484 if (status)
5485 goto out;
5486 status = decode_savefh(xdr);
5487 if (status)
5488 goto out;
5489 status = decode_putfh(xdr);
5490 if (status)
5491 goto out;
5492 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
5493 if (status)
5494 goto out;
5495 /* Current FH is target directory */
5496 if (decode_getfattr(xdr, res->new_fattr, res->server,
5497 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5498 goto out;
5499 status = decode_restorefh(xdr);
5500 if (status)
5501 goto out;
5502 decode_getfattr(xdr, res->old_fattr, res->server,
5503 !RPC_IS_ASYNC(rqstp->rq_task));
5504 out:
5505 return status;
5506 }
5507
5508 /*
5509 * Decode LINK response
5510 */
5511 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5512 struct nfs4_link_res *res)
5513 {
5514 struct compound_hdr hdr;
5515 int status;
5516
5517 status = decode_compound_hdr(xdr, &hdr);
5518 if (status)
5519 goto out;
5520 status = decode_sequence(xdr, &res->seq_res, rqstp);
5521 if (status)
5522 goto out;
5523 status = decode_putfh(xdr);
5524 if (status)
5525 goto out;
5526 status = decode_savefh(xdr);
5527 if (status)
5528 goto out;
5529 status = decode_putfh(xdr);
5530 if (status)
5531 goto out;
5532 status = decode_link(xdr, &res->cinfo);
5533 if (status)
5534 goto out;
5535 /*
5536 * Note order: OP_LINK leaves the directory as the current
5537 * filehandle.
5538 */
5539 if (decode_getfattr(xdr, res->dir_attr, res->server,
5540 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5541 goto out;
5542 status = decode_restorefh(xdr);
5543 if (status)
5544 goto out;
5545 decode_getfattr(xdr, res->fattr, res->server,
5546 !RPC_IS_ASYNC(rqstp->rq_task));
5547 out:
5548 return status;
5549 }
5550
5551 /*
5552 * Decode CREATE response
5553 */
5554 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5555 struct nfs4_create_res *res)
5556 {
5557 struct compound_hdr hdr;
5558 int status;
5559
5560 status = decode_compound_hdr(xdr, &hdr);
5561 if (status)
5562 goto out;
5563 status = decode_sequence(xdr, &res->seq_res, rqstp);
5564 if (status)
5565 goto out;
5566 status = decode_putfh(xdr);
5567 if (status)
5568 goto out;
5569 status = decode_savefh(xdr);
5570 if (status)
5571 goto out;
5572 status = decode_create(xdr, &res->dir_cinfo);
5573 if (status)
5574 goto out;
5575 status = decode_getfh(xdr, res->fh);
5576 if (status)
5577 goto out;
5578 if (decode_getfattr(xdr, res->fattr, res->server,
5579 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5580 goto out;
5581 status = decode_restorefh(xdr);
5582 if (status)
5583 goto out;
5584 decode_getfattr(xdr, res->dir_fattr, res->server,
5585 !RPC_IS_ASYNC(rqstp->rq_task));
5586 out:
5587 return status;
5588 }
5589
5590 /*
5591 * Decode SYMLINK response
5592 */
5593 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5594 struct nfs4_create_res *res)
5595 {
5596 return nfs4_xdr_dec_create(rqstp, xdr, res);
5597 }
5598
5599 /*
5600 * Decode GETATTR response
5601 */
5602 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5603 struct nfs4_getattr_res *res)
5604 {
5605 struct compound_hdr hdr;
5606 int status;
5607
5608 status = decode_compound_hdr(xdr, &hdr);
5609 if (status)
5610 goto out;
5611 status = decode_sequence(xdr, &res->seq_res, rqstp);
5612 if (status)
5613 goto out;
5614 status = decode_putfh(xdr);
5615 if (status)
5616 goto out;
5617 status = decode_getfattr(xdr, res->fattr, res->server,
5618 !RPC_IS_ASYNC(rqstp->rq_task));
5619 out:
5620 return status;
5621 }
5622
5623 /*
5624 * Encode an SETACL request
5625 */
5626 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
5627 struct nfs_setaclargs *args)
5628 {
5629 struct compound_hdr hdr = {
5630 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
5631 };
5632
5633 encode_compound_hdr(xdr, req, &hdr);
5634 encode_sequence(xdr, &args->seq_args, &hdr);
5635 encode_putfh(xdr, args->fh, &hdr);
5636 encode_setacl(xdr, args, &hdr);
5637 encode_nops(&hdr);
5638 }
5639
5640 /*
5641 * Decode SETACL response
5642 */
5643 static int
5644 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5645 struct nfs_setaclres *res)
5646 {
5647 struct compound_hdr hdr;
5648 int status;
5649
5650 status = decode_compound_hdr(xdr, &hdr);
5651 if (status)
5652 goto out;
5653 status = decode_sequence(xdr, &res->seq_res, rqstp);
5654 if (status)
5655 goto out;
5656 status = decode_putfh(xdr);
5657 if (status)
5658 goto out;
5659 status = decode_setattr(xdr);
5660 out:
5661 return status;
5662 }
5663
5664 /*
5665 * Decode GETACL response
5666 */
5667 static int
5668 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5669 struct nfs_getaclres *res)
5670 {
5671 struct compound_hdr hdr;
5672 int status;
5673
5674 status = decode_compound_hdr(xdr, &hdr);
5675 if (status)
5676 goto out;
5677 status = decode_sequence(xdr, &res->seq_res, rqstp);
5678 if (status)
5679 goto out;
5680 status = decode_putfh(xdr);
5681 if (status)
5682 goto out;
5683 status = decode_getacl(xdr, rqstp, &res->acl_len);
5684
5685 out:
5686 return status;
5687 }
5688
5689 /*
5690 * Decode CLOSE response
5691 */
5692 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5693 struct nfs_closeres *res)
5694 {
5695 struct compound_hdr hdr;
5696 int status;
5697
5698 status = decode_compound_hdr(xdr, &hdr);
5699 if (status)
5700 goto out;
5701 status = decode_sequence(xdr, &res->seq_res, rqstp);
5702 if (status)
5703 goto out;
5704 status = decode_putfh(xdr);
5705 if (status)
5706 goto out;
5707 status = decode_close(xdr, res);
5708 if (status != 0)
5709 goto out;
5710 /*
5711 * Note: Server may do delete on close for this file
5712 * in which case the getattr call will fail with
5713 * an ESTALE error. Shouldn't be a problem,
5714 * though, since fattr->valid will remain unset.
5715 */
5716 decode_getfattr(xdr, res->fattr, res->server,
5717 !RPC_IS_ASYNC(rqstp->rq_task));
5718 out:
5719 return status;
5720 }
5721
5722 /*
5723 * Decode OPEN response
5724 */
5725 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5726 struct nfs_openres *res)
5727 {
5728 struct compound_hdr hdr;
5729 int status;
5730
5731 status = decode_compound_hdr(xdr, &hdr);
5732 if (status)
5733 goto out;
5734 status = decode_sequence(xdr, &res->seq_res, rqstp);
5735 if (status)
5736 goto out;
5737 status = decode_putfh(xdr);
5738 if (status)
5739 goto out;
5740 status = decode_savefh(xdr);
5741 if (status)
5742 goto out;
5743 status = decode_open(xdr, res);
5744 if (status)
5745 goto out;
5746 if (decode_getfh(xdr, &res->fh) != 0)
5747 goto out;
5748 if (decode_getfattr(xdr, res->f_attr, res->server,
5749 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5750 goto out;
5751 if (decode_restorefh(xdr) != 0)
5752 goto out;
5753 decode_getfattr(xdr, res->dir_attr, res->server,
5754 !RPC_IS_ASYNC(rqstp->rq_task));
5755 out:
5756 return status;
5757 }
5758
5759 /*
5760 * Decode OPEN_CONFIRM response
5761 */
5762 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
5763 struct xdr_stream *xdr,
5764 struct nfs_open_confirmres *res)
5765 {
5766 struct compound_hdr hdr;
5767 int status;
5768
5769 status = decode_compound_hdr(xdr, &hdr);
5770 if (status)
5771 goto out;
5772 status = decode_putfh(xdr);
5773 if (status)
5774 goto out;
5775 status = decode_open_confirm(xdr, res);
5776 out:
5777 return status;
5778 }
5779
5780 /*
5781 * Decode OPEN response
5782 */
5783 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
5784 struct xdr_stream *xdr,
5785 struct nfs_openres *res)
5786 {
5787 struct compound_hdr hdr;
5788 int status;
5789
5790 status = decode_compound_hdr(xdr, &hdr);
5791 if (status)
5792 goto out;
5793 status = decode_sequence(xdr, &res->seq_res, rqstp);
5794 if (status)
5795 goto out;
5796 status = decode_putfh(xdr);
5797 if (status)
5798 goto out;
5799 status = decode_open(xdr, res);
5800 if (status)
5801 goto out;
5802 decode_getfattr(xdr, res->f_attr, res->server,
5803 !RPC_IS_ASYNC(rqstp->rq_task));
5804 out:
5805 return status;
5806 }
5807
5808 /*
5809 * Decode SETATTR response
5810 */
5811 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
5812 struct xdr_stream *xdr,
5813 struct nfs_setattrres *res)
5814 {
5815 struct compound_hdr hdr;
5816 int status;
5817
5818 status = decode_compound_hdr(xdr, &hdr);
5819 if (status)
5820 goto out;
5821 status = decode_sequence(xdr, &res->seq_res, rqstp);
5822 if (status)
5823 goto out;
5824 status = decode_putfh(xdr);
5825 if (status)
5826 goto out;
5827 status = decode_setattr(xdr);
5828 if (status)
5829 goto out;
5830 decode_getfattr(xdr, res->fattr, res->server,
5831 !RPC_IS_ASYNC(rqstp->rq_task));
5832 out:
5833 return status;
5834 }
5835
5836 /*
5837 * Decode LOCK response
5838 */
5839 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5840 struct nfs_lock_res *res)
5841 {
5842 struct compound_hdr hdr;
5843 int status;
5844
5845 status = decode_compound_hdr(xdr, &hdr);
5846 if (status)
5847 goto out;
5848 status = decode_sequence(xdr, &res->seq_res, rqstp);
5849 if (status)
5850 goto out;
5851 status = decode_putfh(xdr);
5852 if (status)
5853 goto out;
5854 status = decode_lock(xdr, res);
5855 out:
5856 return status;
5857 }
5858
5859 /*
5860 * Decode LOCKT response
5861 */
5862 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5863 struct nfs_lockt_res *res)
5864 {
5865 struct compound_hdr hdr;
5866 int status;
5867
5868 status = decode_compound_hdr(xdr, &hdr);
5869 if (status)
5870 goto out;
5871 status = decode_sequence(xdr, &res->seq_res, rqstp);
5872 if (status)
5873 goto out;
5874 status = decode_putfh(xdr);
5875 if (status)
5876 goto out;
5877 status = decode_lockt(xdr, res);
5878 out:
5879 return status;
5880 }
5881
5882 /*
5883 * Decode LOCKU response
5884 */
5885 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5886 struct nfs_locku_res *res)
5887 {
5888 struct compound_hdr hdr;
5889 int status;
5890
5891 status = decode_compound_hdr(xdr, &hdr);
5892 if (status)
5893 goto out;
5894 status = decode_sequence(xdr, &res->seq_res, rqstp);
5895 if (status)
5896 goto out;
5897 status = decode_putfh(xdr);
5898 if (status)
5899 goto out;
5900 status = decode_locku(xdr, res);
5901 out:
5902 return status;
5903 }
5904
5905 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
5906 struct xdr_stream *xdr, void *dummy)
5907 {
5908 struct compound_hdr hdr;
5909 int status;
5910
5911 status = decode_compound_hdr(xdr, &hdr);
5912 if (!status)
5913 status = decode_release_lockowner(xdr);
5914 return status;
5915 }
5916
5917 /*
5918 * Decode READLINK response
5919 */
5920 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
5921 struct xdr_stream *xdr,
5922 struct nfs4_readlink_res *res)
5923 {
5924 struct compound_hdr hdr;
5925 int status;
5926
5927 status = decode_compound_hdr(xdr, &hdr);
5928 if (status)
5929 goto out;
5930 status = decode_sequence(xdr, &res->seq_res, rqstp);
5931 if (status)
5932 goto out;
5933 status = decode_putfh(xdr);
5934 if (status)
5935 goto out;
5936 status = decode_readlink(xdr, rqstp);
5937 out:
5938 return status;
5939 }
5940
5941 /*
5942 * Decode READDIR response
5943 */
5944 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5945 struct nfs4_readdir_res *res)
5946 {
5947 struct compound_hdr hdr;
5948 int status;
5949
5950 status = decode_compound_hdr(xdr, &hdr);
5951 if (status)
5952 goto out;
5953 status = decode_sequence(xdr, &res->seq_res, rqstp);
5954 if (status)
5955 goto out;
5956 status = decode_putfh(xdr);
5957 if (status)
5958 goto out;
5959 status = decode_readdir(xdr, rqstp, res);
5960 out:
5961 return status;
5962 }
5963
5964 /*
5965 * Decode Read response
5966 */
5967 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5968 struct nfs_readres *res)
5969 {
5970 struct compound_hdr hdr;
5971 int status;
5972
5973 status = decode_compound_hdr(xdr, &hdr);
5974 if (status)
5975 goto out;
5976 status = decode_sequence(xdr, &res->seq_res, rqstp);
5977 if (status)
5978 goto out;
5979 status = decode_putfh(xdr);
5980 if (status)
5981 goto out;
5982 status = decode_read(xdr, rqstp, res);
5983 if (!status)
5984 status = res->count;
5985 out:
5986 return status;
5987 }
5988
5989 /*
5990 * Decode WRITE response
5991 */
5992 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5993 struct nfs_writeres *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_write(xdr, res);
6008 if (status)
6009 goto out;
6010 if (res->fattr)
6011 decode_getfattr(xdr, res->fattr, res->server,
6012 !RPC_IS_ASYNC(rqstp->rq_task));
6013 if (!status)
6014 status = res->count;
6015 out:
6016 return status;
6017 }
6018
6019 /*
6020 * Decode COMMIT response
6021 */
6022 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6023 struct nfs_writeres *res)
6024 {
6025 struct compound_hdr hdr;
6026 int status;
6027
6028 status = decode_compound_hdr(xdr, &hdr);
6029 if (status)
6030 goto out;
6031 status = decode_sequence(xdr, &res->seq_res, rqstp);
6032 if (status)
6033 goto out;
6034 status = decode_putfh(xdr);
6035 if (status)
6036 goto out;
6037 status = decode_commit(xdr, res);
6038 if (status)
6039 goto out;
6040 if (res->fattr)
6041 decode_getfattr(xdr, res->fattr, res->server,
6042 !RPC_IS_ASYNC(rqstp->rq_task));
6043 out:
6044 return status;
6045 }
6046
6047 /*
6048 * Decode FSINFO response
6049 */
6050 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6051 struct nfs4_fsinfo_res *res)
6052 {
6053 struct compound_hdr hdr;
6054 int status;
6055
6056 status = decode_compound_hdr(xdr, &hdr);
6057 if (!status)
6058 status = decode_sequence(xdr, &res->seq_res, req);
6059 if (!status)
6060 status = decode_putfh(xdr);
6061 if (!status)
6062 status = decode_fsinfo(xdr, res->fsinfo);
6063 return status;
6064 }
6065
6066 /*
6067 * Decode PATHCONF response
6068 */
6069 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6070 struct nfs4_pathconf_res *res)
6071 {
6072 struct compound_hdr hdr;
6073 int status;
6074
6075 status = decode_compound_hdr(xdr, &hdr);
6076 if (!status)
6077 status = decode_sequence(xdr, &res->seq_res, req);
6078 if (!status)
6079 status = decode_putfh(xdr);
6080 if (!status)
6081 status = decode_pathconf(xdr, res->pathconf);
6082 return status;
6083 }
6084
6085 /*
6086 * Decode STATFS response
6087 */
6088 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6089 struct nfs4_statfs_res *res)
6090 {
6091 struct compound_hdr hdr;
6092 int status;
6093
6094 status = decode_compound_hdr(xdr, &hdr);
6095 if (!status)
6096 status = decode_sequence(xdr, &res->seq_res, req);
6097 if (!status)
6098 status = decode_putfh(xdr);
6099 if (!status)
6100 status = decode_statfs(xdr, res->fsstat);
6101 return status;
6102 }
6103
6104 /*
6105 * Decode GETATTR_BITMAP response
6106 */
6107 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6108 struct xdr_stream *xdr,
6109 struct nfs4_server_caps_res *res)
6110 {
6111 struct compound_hdr hdr;
6112 int status;
6113
6114 status = decode_compound_hdr(xdr, &hdr);
6115 if (status)
6116 goto out;
6117 status = decode_sequence(xdr, &res->seq_res, req);
6118 if (status)
6119 goto out;
6120 status = decode_putfh(xdr);
6121 if (status)
6122 goto out;
6123 status = decode_server_caps(xdr, res);
6124 out:
6125 return status;
6126 }
6127
6128 /*
6129 * Decode RENEW response
6130 */
6131 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6132 void *__unused)
6133 {
6134 struct compound_hdr hdr;
6135 int status;
6136
6137 status = decode_compound_hdr(xdr, &hdr);
6138 if (!status)
6139 status = decode_renew(xdr);
6140 return status;
6141 }
6142
6143 /*
6144 * Decode SETCLIENTID response
6145 */
6146 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6147 struct xdr_stream *xdr,
6148 struct nfs4_setclientid_res *res)
6149 {
6150 struct compound_hdr hdr;
6151 int status;
6152
6153 status = decode_compound_hdr(xdr, &hdr);
6154 if (!status)
6155 status = decode_setclientid(xdr, res);
6156 return status;
6157 }
6158
6159 /*
6160 * Decode SETCLIENTID_CONFIRM response
6161 */
6162 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6163 struct xdr_stream *xdr,
6164 struct nfs_fsinfo *fsinfo)
6165 {
6166 struct compound_hdr hdr;
6167 int status;
6168
6169 status = decode_compound_hdr(xdr, &hdr);
6170 if (!status)
6171 status = decode_setclientid_confirm(xdr);
6172 if (!status)
6173 status = decode_putrootfh(xdr);
6174 if (!status)
6175 status = decode_fsinfo(xdr, fsinfo);
6176 return status;
6177 }
6178
6179 /*
6180 * Decode DELEGRETURN response
6181 */
6182 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6183 struct xdr_stream *xdr,
6184 struct nfs4_delegreturnres *res)
6185 {
6186 struct compound_hdr hdr;
6187 int status;
6188
6189 status = decode_compound_hdr(xdr, &hdr);
6190 if (status)
6191 goto out;
6192 status = decode_sequence(xdr, &res->seq_res, rqstp);
6193 if (status)
6194 goto out;
6195 status = decode_putfh(xdr);
6196 if (status != 0)
6197 goto out;
6198 status = decode_delegreturn(xdr);
6199 if (status != 0)
6200 goto out;
6201 decode_getfattr(xdr, res->fattr, res->server,
6202 !RPC_IS_ASYNC(rqstp->rq_task));
6203 out:
6204 return status;
6205 }
6206
6207 /*
6208 * Decode FS_LOCATIONS response
6209 */
6210 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6211 struct xdr_stream *xdr,
6212 struct nfs4_fs_locations_res *res)
6213 {
6214 struct compound_hdr hdr;
6215 int status;
6216
6217 status = decode_compound_hdr(xdr, &hdr);
6218 if (status)
6219 goto out;
6220 status = decode_sequence(xdr, &res->seq_res, req);
6221 if (status)
6222 goto out;
6223 status = decode_putfh(xdr);
6224 if (status)
6225 goto out;
6226 status = decode_lookup(xdr);
6227 if (status)
6228 goto out;
6229 xdr_enter_page(xdr, PAGE_SIZE);
6230 status = decode_getfattr(xdr, &res->fs_locations->fattr,
6231 res->fs_locations->server,
6232 !RPC_IS_ASYNC(req->rq_task));
6233 out:
6234 return status;
6235 }
6236
6237 /*
6238 * Decode SECINFO response
6239 */
6240 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6241 struct xdr_stream *xdr,
6242 struct nfs4_secinfo_res *res)
6243 {
6244 struct compound_hdr hdr;
6245 int status;
6246
6247 status = decode_compound_hdr(xdr, &hdr);
6248 if (status)
6249 goto out;
6250 status = decode_sequence(xdr, &res->seq_res, rqstp);
6251 if (status)
6252 goto out;
6253 status = decode_putfh(xdr);
6254 if (status)
6255 goto out;
6256 status = decode_secinfo(xdr, res);
6257 if (status)
6258 goto out;
6259 out:
6260 return status;
6261 }
6262
6263 #if defined(CONFIG_NFS_V4_1)
6264 /*
6265 * Decode EXCHANGE_ID response
6266 */
6267 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6268 struct xdr_stream *xdr,
6269 void *res)
6270 {
6271 struct compound_hdr hdr;
6272 int status;
6273
6274 status = decode_compound_hdr(xdr, &hdr);
6275 if (!status)
6276 status = decode_exchange_id(xdr, res);
6277 return status;
6278 }
6279
6280 /*
6281 * Decode CREATE_SESSION response
6282 */
6283 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6284 struct xdr_stream *xdr,
6285 struct nfs41_create_session_res *res)
6286 {
6287 struct compound_hdr hdr;
6288 int status;
6289
6290 status = decode_compound_hdr(xdr, &hdr);
6291 if (!status)
6292 status = decode_create_session(xdr, res);
6293 return status;
6294 }
6295
6296 /*
6297 * Decode DESTROY_SESSION response
6298 */
6299 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6300 struct xdr_stream *xdr,
6301 void *res)
6302 {
6303 struct compound_hdr hdr;
6304 int status;
6305
6306 status = decode_compound_hdr(xdr, &hdr);
6307 if (!status)
6308 status = decode_destroy_session(xdr, res);
6309 return status;
6310 }
6311
6312 /*
6313 * Decode SEQUENCE response
6314 */
6315 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6316 struct xdr_stream *xdr,
6317 struct nfs4_sequence_res *res)
6318 {
6319 struct compound_hdr hdr;
6320 int status;
6321
6322 status = decode_compound_hdr(xdr, &hdr);
6323 if (!status)
6324 status = decode_sequence(xdr, res, rqstp);
6325 return status;
6326 }
6327
6328 /*
6329 * Decode GET_LEASE_TIME response
6330 */
6331 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6332 struct xdr_stream *xdr,
6333 struct nfs4_get_lease_time_res *res)
6334 {
6335 struct compound_hdr hdr;
6336 int status;
6337
6338 status = decode_compound_hdr(xdr, &hdr);
6339 if (!status)
6340 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6341 if (!status)
6342 status = decode_putrootfh(xdr);
6343 if (!status)
6344 status = decode_fsinfo(xdr, res->lr_fsinfo);
6345 return status;
6346 }
6347
6348 /*
6349 * Decode RECLAIM_COMPLETE response
6350 */
6351 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6352 struct xdr_stream *xdr,
6353 struct nfs41_reclaim_complete_res *res)
6354 {
6355 struct compound_hdr hdr;
6356 int status;
6357
6358 status = decode_compound_hdr(xdr, &hdr);
6359 if (!status)
6360 status = decode_sequence(xdr, &res->seq_res, rqstp);
6361 if (!status)
6362 status = decode_reclaim_complete(xdr, (void *)NULL);
6363 return status;
6364 }
6365
6366 /*
6367 * Decode GETDEVINFO response
6368 */
6369 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6370 struct xdr_stream *xdr,
6371 struct nfs4_getdeviceinfo_res *res)
6372 {
6373 struct compound_hdr hdr;
6374 int status;
6375
6376 status = decode_compound_hdr(xdr, &hdr);
6377 if (status != 0)
6378 goto out;
6379 status = decode_sequence(xdr, &res->seq_res, rqstp);
6380 if (status != 0)
6381 goto out;
6382 status = decode_getdeviceinfo(xdr, res->pdev);
6383 out:
6384 return status;
6385 }
6386
6387 /*
6388 * Decode LAYOUTGET response
6389 */
6390 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6391 struct xdr_stream *xdr,
6392 struct nfs4_layoutget_res *res)
6393 {
6394 struct compound_hdr hdr;
6395 int status;
6396
6397 status = decode_compound_hdr(xdr, &hdr);
6398 if (status)
6399 goto out;
6400 status = decode_sequence(xdr, &res->seq_res, rqstp);
6401 if (status)
6402 goto out;
6403 status = decode_putfh(xdr);
6404 if (status)
6405 goto out;
6406 status = decode_layoutget(xdr, rqstp, res);
6407 out:
6408 return status;
6409 }
6410
6411 /*
6412 * Decode LAYOUTRETURN response
6413 */
6414 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6415 struct xdr_stream *xdr,
6416 struct nfs4_layoutreturn_res *res)
6417 {
6418 struct compound_hdr hdr;
6419 int status;
6420
6421 status = decode_compound_hdr(xdr, &hdr);
6422 if (status)
6423 goto out;
6424 status = decode_sequence(xdr, &res->seq_res, rqstp);
6425 if (status)
6426 goto out;
6427 status = decode_putfh(xdr);
6428 if (status)
6429 goto out;
6430 status = decode_layoutreturn(xdr, res);
6431 out:
6432 return status;
6433 }
6434
6435 /*
6436 * Decode LAYOUTCOMMIT response
6437 */
6438 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6439 struct xdr_stream *xdr,
6440 struct nfs4_layoutcommit_res *res)
6441 {
6442 struct compound_hdr hdr;
6443 int status;
6444
6445 status = decode_compound_hdr(xdr, &hdr);
6446 if (status)
6447 goto out;
6448 status = decode_sequence(xdr, &res->seq_res, rqstp);
6449 if (status)
6450 goto out;
6451 status = decode_putfh(xdr);
6452 if (status)
6453 goto out;
6454 status = decode_layoutcommit(xdr, rqstp, res);
6455 if (status)
6456 goto out;
6457 decode_getfattr(xdr, res->fattr, res->server,
6458 !RPC_IS_ASYNC(rqstp->rq_task));
6459 out:
6460 return status;
6461 }
6462 #endif /* CONFIG_NFS_V4_1 */
6463
6464 /**
6465 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
6466 * the local page cache.
6467 * @xdr: XDR stream where entry resides
6468 * @entry: buffer to fill in with entry data
6469 * @plus: boolean indicating whether this should be a readdirplus entry
6470 *
6471 * Returns zero if successful, otherwise a negative errno value is
6472 * returned.
6473 *
6474 * This function is not invoked during READDIR reply decoding, but
6475 * rather whenever an application invokes the getdents(2) system call
6476 * on a directory already in our cache.
6477 */
6478 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
6479 int plus)
6480 {
6481 uint32_t bitmap[2] = {0};
6482 uint32_t len;
6483 __be32 *p = xdr_inline_decode(xdr, 4);
6484 if (unlikely(!p))
6485 goto out_overflow;
6486 if (*p == xdr_zero) {
6487 p = xdr_inline_decode(xdr, 4);
6488 if (unlikely(!p))
6489 goto out_overflow;
6490 if (*p == xdr_zero)
6491 return -EAGAIN;
6492 entry->eof = 1;
6493 return -EBADCOOKIE;
6494 }
6495
6496 p = xdr_inline_decode(xdr, 12);
6497 if (unlikely(!p))
6498 goto out_overflow;
6499 entry->prev_cookie = entry->cookie;
6500 p = xdr_decode_hyper(p, &entry->cookie);
6501 entry->len = be32_to_cpup(p);
6502
6503 p = xdr_inline_decode(xdr, entry->len);
6504 if (unlikely(!p))
6505 goto out_overflow;
6506 entry->name = (const char *) p;
6507
6508 /*
6509 * In case the server doesn't return an inode number,
6510 * we fake one here. (We don't use inode number 0,
6511 * since glibc seems to choke on it...)
6512 */
6513 entry->ino = 1;
6514 entry->fattr->valid = 0;
6515
6516 if (decode_attr_bitmap(xdr, bitmap) < 0)
6517 goto out_overflow;
6518
6519 if (decode_attr_length(xdr, &len, &p) < 0)
6520 goto out_overflow;
6521
6522 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
6523 entry->server, 1) < 0)
6524 goto out_overflow;
6525 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
6526 entry->ino = entry->fattr->mounted_on_fileid;
6527 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
6528 entry->ino = entry->fattr->fileid;
6529
6530 entry->d_type = DT_UNKNOWN;
6531 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
6532 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
6533
6534 return 0;
6535
6536 out_overflow:
6537 print_overflow_msg(__func__, xdr);
6538 return -EAGAIN;
6539 }
6540
6541 /*
6542 * We need to translate between nfs status return values and
6543 * the local errno values which may not be the same.
6544 */
6545 static struct {
6546 int stat;
6547 int errno;
6548 } nfs_errtbl[] = {
6549 { NFS4_OK, 0 },
6550 { NFS4ERR_PERM, -EPERM },
6551 { NFS4ERR_NOENT, -ENOENT },
6552 { NFS4ERR_IO, -errno_NFSERR_IO},
6553 { NFS4ERR_NXIO, -ENXIO },
6554 { NFS4ERR_ACCESS, -EACCES },
6555 { NFS4ERR_EXIST, -EEXIST },
6556 { NFS4ERR_XDEV, -EXDEV },
6557 { NFS4ERR_NOTDIR, -ENOTDIR },
6558 { NFS4ERR_ISDIR, -EISDIR },
6559 { NFS4ERR_INVAL, -EINVAL },
6560 { NFS4ERR_FBIG, -EFBIG },
6561 { NFS4ERR_NOSPC, -ENOSPC },
6562 { NFS4ERR_ROFS, -EROFS },
6563 { NFS4ERR_MLINK, -EMLINK },
6564 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
6565 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
6566 { NFS4ERR_DQUOT, -EDQUOT },
6567 { NFS4ERR_STALE, -ESTALE },
6568 { NFS4ERR_BADHANDLE, -EBADHANDLE },
6569 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
6570 { NFS4ERR_NOTSUPP, -ENOTSUPP },
6571 { NFS4ERR_TOOSMALL, -ETOOSMALL },
6572 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
6573 { NFS4ERR_BADTYPE, -EBADTYPE },
6574 { NFS4ERR_LOCKED, -EAGAIN },
6575 { NFS4ERR_SYMLINK, -ELOOP },
6576 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
6577 { NFS4ERR_DEADLOCK, -EDEADLK },
6578 { -1, -EIO }
6579 };
6580
6581 /*
6582 * Convert an NFS error code to a local one.
6583 * This one is used jointly by NFSv2 and NFSv3.
6584 */
6585 static int
6586 nfs4_stat_to_errno(int stat)
6587 {
6588 int i;
6589 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
6590 if (nfs_errtbl[i].stat == stat)
6591 return nfs_errtbl[i].errno;
6592 }
6593 if (stat <= 10000 || stat > 10100) {
6594 /* The server is looney tunes. */
6595 return -EREMOTEIO;
6596 }
6597 /* If we cannot translate the error, the recovery routines should
6598 * handle it.
6599 * Note: remaining NFSv4 error codes have values > 10000, so should
6600 * not conflict with native Linux error codes.
6601 */
6602 return -stat;
6603 }
6604
6605 #define PROC(proc, argtype, restype) \
6606 [NFSPROC4_CLNT_##proc] = { \
6607 .p_proc = NFSPROC4_COMPOUND, \
6608 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
6609 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
6610 .p_arglen = NFS4_##argtype##_sz, \
6611 .p_replen = NFS4_##restype##_sz, \
6612 .p_statidx = NFSPROC4_CLNT_##proc, \
6613 .p_name = #proc, \
6614 }
6615
6616 struct rpc_procinfo nfs4_procedures[] = {
6617 PROC(READ, enc_read, dec_read),
6618 PROC(WRITE, enc_write, dec_write),
6619 PROC(COMMIT, enc_commit, dec_commit),
6620 PROC(OPEN, enc_open, dec_open),
6621 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
6622 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
6623 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
6624 PROC(CLOSE, enc_close, dec_close),
6625 PROC(SETATTR, enc_setattr, dec_setattr),
6626 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
6627 PROC(RENEW, enc_renew, dec_renew),
6628 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
6629 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
6630 PROC(LOCK, enc_lock, dec_lock),
6631 PROC(LOCKT, enc_lockt, dec_lockt),
6632 PROC(LOCKU, enc_locku, dec_locku),
6633 PROC(ACCESS, enc_access, dec_access),
6634 PROC(GETATTR, enc_getattr, dec_getattr),
6635 PROC(LOOKUP, enc_lookup, dec_lookup),
6636 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
6637 PROC(REMOVE, enc_remove, dec_remove),
6638 PROC(RENAME, enc_rename, dec_rename),
6639 PROC(LINK, enc_link, dec_link),
6640 PROC(SYMLINK, enc_symlink, dec_symlink),
6641 PROC(CREATE, enc_create, dec_create),
6642 PROC(PATHCONF, enc_pathconf, dec_pathconf),
6643 PROC(STATFS, enc_statfs, dec_statfs),
6644 PROC(READLINK, enc_readlink, dec_readlink),
6645 PROC(READDIR, enc_readdir, dec_readdir),
6646 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
6647 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
6648 PROC(GETACL, enc_getacl, dec_getacl),
6649 PROC(SETACL, enc_setacl, dec_setacl),
6650 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
6651 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
6652 PROC(SECINFO, enc_secinfo, dec_secinfo),
6653 #if defined(CONFIG_NFS_V4_1)
6654 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
6655 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
6656 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
6657 PROC(SEQUENCE, enc_sequence, dec_sequence),
6658 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
6659 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
6660 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
6661 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
6662 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
6663 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
6664 #endif /* CONFIG_NFS_V4_1 */
6665 };
6666
6667 struct rpc_version nfs_version4 = {
6668 .number = 4,
6669 .nrprocs = ARRAY_SIZE(nfs4_procedures),
6670 .procs = nfs4_procedures
6671 };
6672
6673 /*
6674 * Local variables:
6675 * c-basic-offset: 8
6676 * End:
6677 */
Linus' kernel tree