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Merge branch 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm
[linux-rapidio-2.6.git] / fs / nfs / nfs4xdr.c
blob08ef912911324d550285299d112164b11f45689b
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/nfs.h>
50 #include <linux/nfs4.h>
51 #include <linux/nfs_fs.h>
52 #include <linux/nfs_idmap.h>
53 #include "nfs4_fs.h"
54 #include "internal.h"
55
56 #define NFSDBG_FACILITY NFSDBG_XDR
57
58 /* Mapping from NFS error code to "errno" error code. */
59 #define errno_NFSERR_IO EIO
60
61 static int nfs4_stat_to_errno(int);
62
63 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
64 #ifdef DEBUG
65 #define NFS4_MAXTAGLEN 20
66 #else
67 #define NFS4_MAXTAGLEN 0
68 #endif
69
70 /* lock,open owner id:
71 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
72 */
73 #define open_owner_id_maxsz (1 + 4)
74 #define lock_owner_id_maxsz (1 + 4)
75 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
76 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
77 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
78 #define op_encode_hdr_maxsz (1)
79 #define op_decode_hdr_maxsz (2)
80 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
81 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
82 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
83 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
84 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
85 (NFS4_FHSIZE >> 2))
86 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
87 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
88 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
89 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
90 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
91 ((3+NFS4_FHSIZE) >> 2))
92 #define nfs4_fattr_bitmap_maxsz 3
93 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
94 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
95 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
96 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
97 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
98 /* This is based on getfattr, which uses the most attributes: */
99 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
100 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
101 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
102 nfs4_fattr_value_maxsz)
103 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
104 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
105 1 + 2 + 1 + \
106 nfs4_owner_maxsz + \
107 nfs4_group_maxsz + \
108 4 + 4)
109 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
110 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
111 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
112 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
113 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
114 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
115 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
116 #define decode_renew_maxsz (op_decode_hdr_maxsz)
117 #define encode_setclientid_maxsz \
118 (op_encode_hdr_maxsz + \
119 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
120 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
121 1 /* sc_prog */ + \
122 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
123 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
124 1) /* sc_cb_ident */
125 #define decode_setclientid_maxsz \
126 (op_decode_hdr_maxsz + \
127 2 + \
128 1024) /* large value for CLID_INUSE */
129 #define encode_setclientid_confirm_maxsz \
130 (op_encode_hdr_maxsz + \
131 3 + (NFS4_VERIFIER_SIZE >> 2))
132 #define decode_setclientid_confirm_maxsz \
133 (op_decode_hdr_maxsz)
134 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
135 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
136 #define encode_share_access_maxsz \
137 (2)
138 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
139 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
140 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
141 #define encode_open_maxsz (op_encode_hdr_maxsz + \
142 2 + encode_share_access_maxsz + 2 + \
143 open_owner_id_maxsz + \
144 encode_opentype_maxsz + \
145 encode_claim_null_maxsz)
146 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
147 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
148 decode_ace_maxsz)
149 #define decode_change_info_maxsz (5)
150 #define decode_open_maxsz (op_decode_hdr_maxsz + \
151 decode_stateid_maxsz + \
152 decode_change_info_maxsz + 1 + \
153 nfs4_fattr_bitmap_maxsz + \
154 decode_delegation_maxsz)
155 #define encode_open_confirm_maxsz \
156 (op_encode_hdr_maxsz + \
157 encode_stateid_maxsz + 1)
158 #define decode_open_confirm_maxsz \
159 (op_decode_hdr_maxsz + \
160 decode_stateid_maxsz)
161 #define encode_open_downgrade_maxsz \
162 (op_encode_hdr_maxsz + \
163 encode_stateid_maxsz + 1 + \
164 encode_share_access_maxsz)
165 #define decode_open_downgrade_maxsz \
166 (op_decode_hdr_maxsz + \
167 decode_stateid_maxsz)
168 #define encode_close_maxsz (op_encode_hdr_maxsz + \
169 1 + encode_stateid_maxsz)
170 #define decode_close_maxsz (op_decode_hdr_maxsz + \
171 decode_stateid_maxsz)
172 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
173 encode_stateid_maxsz + \
174 encode_attrs_maxsz)
175 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
176 nfs4_fattr_bitmap_maxsz)
177 #define encode_read_maxsz (op_encode_hdr_maxsz + \
178 encode_stateid_maxsz + 3)
179 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
180 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
181 2 + encode_verifier_maxsz + 5)
182 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
183 decode_verifier_maxsz)
184 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
185 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
186 #define encode_write_maxsz (op_encode_hdr_maxsz + \
187 encode_stateid_maxsz + 4)
188 #define decode_write_maxsz (op_decode_hdr_maxsz + \
189 2 + decode_verifier_maxsz)
190 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
191 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
192 decode_verifier_maxsz)
193 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
194 nfs4_name_maxsz)
195 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
196 decode_change_info_maxsz)
197 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
198 2 * nfs4_name_maxsz)
199 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
200 decode_change_info_maxsz + \
201 decode_change_info_maxsz)
202 #define encode_link_maxsz (op_encode_hdr_maxsz + \
203 nfs4_name_maxsz)
204 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
205 #define encode_lockowner_maxsz (7)
206 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
207 7 + \
208 1 + encode_stateid_maxsz + 1 + \
209 encode_lockowner_maxsz)
210 #define decode_lock_denied_maxsz \
211 (8 + decode_lockowner_maxsz)
212 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
213 decode_lock_denied_maxsz)
214 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
215 encode_lockowner_maxsz)
216 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
217 decode_lock_denied_maxsz)
218 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
219 encode_stateid_maxsz + \
220 4)
221 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
222 decode_stateid_maxsz)
223 #define encode_release_lockowner_maxsz \
224 (op_encode_hdr_maxsz + \
225 encode_lockowner_maxsz)
226 #define decode_release_lockowner_maxsz \
227 (op_decode_hdr_maxsz)
228 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
229 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
230 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
231 1 + nfs4_name_maxsz + \
232 1 + \
233 nfs4_fattr_maxsz)
234 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
235 #define encode_create_maxsz (op_encode_hdr_maxsz + \
236 1 + 2 + nfs4_name_maxsz + \
237 encode_attrs_maxsz)
238 #define decode_create_maxsz (op_decode_hdr_maxsz + \
239 decode_change_info_maxsz + \
240 nfs4_fattr_bitmap_maxsz)
241 #define encode_statfs_maxsz (encode_getattr_maxsz)
242 #define decode_statfs_maxsz (decode_getattr_maxsz)
243 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
244 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
245 #define encode_getacl_maxsz (encode_getattr_maxsz)
246 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
247 nfs4_fattr_bitmap_maxsz + 1)
248 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
249 encode_stateid_maxsz + 3)
250 #define decode_setacl_maxsz (decode_setattr_maxsz)
251 #define encode_fs_locations_maxsz \
252 (encode_getattr_maxsz)
253 #define decode_fs_locations_maxsz \
254 (0)
255
256 #if defined(CONFIG_NFS_V4_1)
257 #define NFS4_MAX_MACHINE_NAME_LEN (64)
258
259 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
260 encode_verifier_maxsz + \
261 1 /* co_ownerid.len */ + \
262 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
263 1 /* flags */ + \
264 1 /* spa_how */ + \
265 0 /* SP4_NONE (for now) */ + \
266 1 /* zero implemetation id array */)
267 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
268 2 /* eir_clientid */ + \
269 1 /* eir_sequenceid */ + \
270 1 /* eir_flags */ + \
271 1 /* spr_how */ + \
272 0 /* SP4_NONE (for now) */ + \
273 2 /* eir_server_owner.so_minor_id */ + \
274 /* eir_server_owner.so_major_id<> */ \
275 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
276 /* eir_server_scope<> */ \
277 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
278 1 /* eir_server_impl_id array length */ + \
279 0 /* ignored eir_server_impl_id contents */)
280 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
281 #define decode_channel_attrs_maxsz (6 + \
282 1 /* ca_rdma_ird.len */ + \
283 1 /* ca_rdma_ird */)
284 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
285 2 /* csa_clientid */ + \
286 1 /* csa_sequence */ + \
287 1 /* csa_flags */ + \
288 encode_channel_attrs_maxsz + \
289 encode_channel_attrs_maxsz + \
290 1 /* csa_cb_program */ + \
291 1 /* csa_sec_parms.len (1) */ + \
292 1 /* cb_secflavor (AUTH_SYS) */ + \
293 1 /* stamp */ + \
294 1 /* machinename.len */ + \
295 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
296 1 /* uid */ + \
297 1 /* gid */ + \
298 1 /* gids.len (0) */)
299 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
300 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
301 1 /* csr_sequence */ + \
302 1 /* csr_flags */ + \
303 decode_channel_attrs_maxsz + \
304 decode_channel_attrs_maxsz)
305 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
306 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
307 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
308 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
309 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
310 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
311 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
312 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
313 #else /* CONFIG_NFS_V4_1 */
314 #define encode_sequence_maxsz 0
315 #define decode_sequence_maxsz 0
316 #endif /* CONFIG_NFS_V4_1 */
317
318 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
319 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
320 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
321 encode_sequence_maxsz + \
322 encode_putfh_maxsz + \
323 encode_read_maxsz)
324 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
325 decode_sequence_maxsz + \
326 decode_putfh_maxsz + \
327 decode_read_maxsz)
328 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
329 encode_sequence_maxsz + \
330 encode_putfh_maxsz + \
331 encode_readlink_maxsz)
332 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
333 decode_sequence_maxsz + \
334 decode_putfh_maxsz + \
335 decode_readlink_maxsz)
336 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
337 encode_sequence_maxsz + \
338 encode_putfh_maxsz + \
339 encode_readdir_maxsz)
340 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
341 decode_sequence_maxsz + \
342 decode_putfh_maxsz + \
343 decode_readdir_maxsz)
344 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
345 encode_sequence_maxsz + \
346 encode_putfh_maxsz + \
347 encode_write_maxsz + \
348 encode_getattr_maxsz)
349 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
350 decode_sequence_maxsz + \
351 decode_putfh_maxsz + \
352 decode_write_maxsz + \
353 decode_getattr_maxsz)
354 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
355 encode_sequence_maxsz + \
356 encode_putfh_maxsz + \
357 encode_commit_maxsz + \
358 encode_getattr_maxsz)
359 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
360 decode_sequence_maxsz + \
361 decode_putfh_maxsz + \
362 decode_commit_maxsz + \
363 decode_getattr_maxsz)
364 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
365 encode_sequence_maxsz + \
366 encode_putfh_maxsz + \
367 encode_savefh_maxsz + \
368 encode_open_maxsz + \
369 encode_getfh_maxsz + \
370 encode_getattr_maxsz + \
371 encode_restorefh_maxsz + \
372 encode_getattr_maxsz)
373 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
374 decode_sequence_maxsz + \
375 decode_putfh_maxsz + \
376 decode_savefh_maxsz + \
377 decode_open_maxsz + \
378 decode_getfh_maxsz + \
379 decode_getattr_maxsz + \
380 decode_restorefh_maxsz + \
381 decode_getattr_maxsz)
382 #define NFS4_enc_open_confirm_sz \
383 (compound_encode_hdr_maxsz + \
384 encode_putfh_maxsz + \
385 encode_open_confirm_maxsz)
386 #define NFS4_dec_open_confirm_sz \
387 (compound_decode_hdr_maxsz + \
388 decode_putfh_maxsz + \
389 decode_open_confirm_maxsz)
390 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
391 encode_sequence_maxsz + \
392 encode_putfh_maxsz + \
393 encode_open_maxsz + \
394 encode_getattr_maxsz)
395 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
396 decode_sequence_maxsz + \
397 decode_putfh_maxsz + \
398 decode_open_maxsz + \
399 decode_getattr_maxsz)
400 #define NFS4_enc_open_downgrade_sz \
401 (compound_encode_hdr_maxsz + \
402 encode_sequence_maxsz + \
403 encode_putfh_maxsz + \
404 encode_open_downgrade_maxsz + \
405 encode_getattr_maxsz)
406 #define NFS4_dec_open_downgrade_sz \
407 (compound_decode_hdr_maxsz + \
408 decode_sequence_maxsz + \
409 decode_putfh_maxsz + \
410 decode_open_downgrade_maxsz + \
411 decode_getattr_maxsz)
412 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
413 encode_sequence_maxsz + \
414 encode_putfh_maxsz + \
415 encode_close_maxsz + \
416 encode_getattr_maxsz)
417 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
418 decode_sequence_maxsz + \
419 decode_putfh_maxsz + \
420 decode_close_maxsz + \
421 decode_getattr_maxsz)
422 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
423 encode_sequence_maxsz + \
424 encode_putfh_maxsz + \
425 encode_setattr_maxsz + \
426 encode_getattr_maxsz)
427 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
428 decode_sequence_maxsz + \
429 decode_putfh_maxsz + \
430 decode_setattr_maxsz + \
431 decode_getattr_maxsz)
432 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
433 encode_sequence_maxsz + \
434 encode_putfh_maxsz + \
435 encode_fsinfo_maxsz)
436 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
437 decode_sequence_maxsz + \
438 decode_putfh_maxsz + \
439 decode_fsinfo_maxsz)
440 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
441 encode_renew_maxsz)
442 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
443 decode_renew_maxsz)
444 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
445 encode_setclientid_maxsz)
446 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
447 decode_setclientid_maxsz)
448 #define NFS4_enc_setclientid_confirm_sz \
449 (compound_encode_hdr_maxsz + \
450 encode_setclientid_confirm_maxsz + \
451 encode_putrootfh_maxsz + \
452 encode_fsinfo_maxsz)
453 #define NFS4_dec_setclientid_confirm_sz \
454 (compound_decode_hdr_maxsz + \
455 decode_setclientid_confirm_maxsz + \
456 decode_putrootfh_maxsz + \
457 decode_fsinfo_maxsz)
458 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
459 encode_sequence_maxsz + \
460 encode_putfh_maxsz + \
461 encode_lock_maxsz)
462 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
463 decode_sequence_maxsz + \
464 decode_putfh_maxsz + \
465 decode_lock_maxsz)
466 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
467 encode_sequence_maxsz + \
468 encode_putfh_maxsz + \
469 encode_lockt_maxsz)
470 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
471 decode_sequence_maxsz + \
472 decode_putfh_maxsz + \
473 decode_lockt_maxsz)
474 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
475 encode_sequence_maxsz + \
476 encode_putfh_maxsz + \
477 encode_locku_maxsz)
478 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
479 decode_sequence_maxsz + \
480 decode_putfh_maxsz + \
481 decode_locku_maxsz)
482 #define NFS4_enc_release_lockowner_sz \
483 (compound_encode_hdr_maxsz + \
484 encode_lockowner_maxsz)
485 #define NFS4_dec_release_lockowner_sz \
486 (compound_decode_hdr_maxsz + \
487 decode_lockowner_maxsz)
488 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
489 encode_sequence_maxsz + \
490 encode_putfh_maxsz + \
491 encode_access_maxsz + \
492 encode_getattr_maxsz)
493 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
494 decode_sequence_maxsz + \
495 decode_putfh_maxsz + \
496 decode_access_maxsz + \
497 decode_getattr_maxsz)
498 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
499 encode_sequence_maxsz + \
500 encode_putfh_maxsz + \
501 encode_getattr_maxsz)
502 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
503 decode_sequence_maxsz + \
504 decode_putfh_maxsz + \
505 decode_getattr_maxsz)
506 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
507 encode_sequence_maxsz + \
508 encode_putfh_maxsz + \
509 encode_lookup_maxsz + \
510 encode_getattr_maxsz + \
511 encode_getfh_maxsz)
512 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
513 decode_sequence_maxsz + \
514 decode_putfh_maxsz + \
515 decode_lookup_maxsz + \
516 decode_getattr_maxsz + \
517 decode_getfh_maxsz)
518 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
519 encode_sequence_maxsz + \
520 encode_putrootfh_maxsz + \
521 encode_getattr_maxsz + \
522 encode_getfh_maxsz)
523 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
524 decode_sequence_maxsz + \
525 decode_putrootfh_maxsz + \
526 decode_getattr_maxsz + \
527 decode_getfh_maxsz)
528 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
529 encode_sequence_maxsz + \
530 encode_putfh_maxsz + \
531 encode_remove_maxsz + \
532 encode_getattr_maxsz)
533 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
534 decode_sequence_maxsz + \
535 decode_putfh_maxsz + \
536 decode_remove_maxsz + \
537 decode_getattr_maxsz)
538 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
539 encode_sequence_maxsz + \
540 encode_putfh_maxsz + \
541 encode_savefh_maxsz + \
542 encode_putfh_maxsz + \
543 encode_rename_maxsz + \
544 encode_getattr_maxsz + \
545 encode_restorefh_maxsz + \
546 encode_getattr_maxsz)
547 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
548 decode_sequence_maxsz + \
549 decode_putfh_maxsz + \
550 decode_savefh_maxsz + \
551 decode_putfh_maxsz + \
552 decode_rename_maxsz + \
553 decode_getattr_maxsz + \
554 decode_restorefh_maxsz + \
555 decode_getattr_maxsz)
556 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
557 encode_sequence_maxsz + \
558 encode_putfh_maxsz + \
559 encode_savefh_maxsz + \
560 encode_putfh_maxsz + \
561 encode_link_maxsz + \
562 decode_getattr_maxsz + \
563 encode_restorefh_maxsz + \
564 decode_getattr_maxsz)
565 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
566 decode_sequence_maxsz + \
567 decode_putfh_maxsz + \
568 decode_savefh_maxsz + \
569 decode_putfh_maxsz + \
570 decode_link_maxsz + \
571 decode_getattr_maxsz + \
572 decode_restorefh_maxsz + \
573 decode_getattr_maxsz)
574 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
575 encode_sequence_maxsz + \
576 encode_putfh_maxsz + \
577 encode_symlink_maxsz + \
578 encode_getattr_maxsz + \
579 encode_getfh_maxsz)
580 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
581 decode_sequence_maxsz + \
582 decode_putfh_maxsz + \
583 decode_symlink_maxsz + \
584 decode_getattr_maxsz + \
585 decode_getfh_maxsz)
586 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
587 encode_sequence_maxsz + \
588 encode_putfh_maxsz + \
589 encode_savefh_maxsz + \
590 encode_create_maxsz + \
591 encode_getfh_maxsz + \
592 encode_getattr_maxsz + \
593 encode_restorefh_maxsz + \
594 encode_getattr_maxsz)
595 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_savefh_maxsz + \
599 decode_create_maxsz + \
600 decode_getfh_maxsz + \
601 decode_getattr_maxsz + \
602 decode_restorefh_maxsz + \
603 decode_getattr_maxsz)
604 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
605 encode_sequence_maxsz + \
606 encode_putfh_maxsz + \
607 encode_getattr_maxsz)
608 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_getattr_maxsz)
612 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
615 encode_statfs_maxsz)
616 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
617 decode_sequence_maxsz + \
618 decode_putfh_maxsz + \
619 decode_statfs_maxsz)
620 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
621 encode_sequence_maxsz + \
622 encode_putfh_maxsz + \
623 encode_getattr_maxsz)
624 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
625 decode_sequence_maxsz + \
626 decode_putfh_maxsz + \
627 decode_getattr_maxsz)
628 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
629 encode_sequence_maxsz + \
630 encode_putfh_maxsz + \
631 encode_delegreturn_maxsz + \
632 encode_getattr_maxsz)
633 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
634 decode_sequence_maxsz + \
635 decode_delegreturn_maxsz + \
636 decode_getattr_maxsz)
637 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
638 encode_sequence_maxsz + \
639 encode_putfh_maxsz + \
640 encode_getacl_maxsz)
641 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
642 decode_sequence_maxsz + \
643 decode_putfh_maxsz + \
644 decode_getacl_maxsz)
645 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
646 encode_sequence_maxsz + \
647 encode_putfh_maxsz + \
648 encode_setacl_maxsz)
649 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
652 decode_setacl_maxsz)
653 #define NFS4_enc_fs_locations_sz \
654 (compound_encode_hdr_maxsz + \
655 encode_sequence_maxsz + \
656 encode_putfh_maxsz + \
657 encode_lookup_maxsz + \
658 encode_fs_locations_maxsz)
659 #define NFS4_dec_fs_locations_sz \
660 (compound_decode_hdr_maxsz + \
661 decode_sequence_maxsz + \
662 decode_putfh_maxsz + \
663 decode_lookup_maxsz + \
664 decode_fs_locations_maxsz)
665 #if defined(CONFIG_NFS_V4_1)
666 #define NFS4_enc_exchange_id_sz \
667 (compound_encode_hdr_maxsz + \
668 encode_exchange_id_maxsz)
669 #define NFS4_dec_exchange_id_sz \
670 (compound_decode_hdr_maxsz + \
671 decode_exchange_id_maxsz)
672 #define NFS4_enc_create_session_sz \
673 (compound_encode_hdr_maxsz + \
674 encode_create_session_maxsz)
675 #define NFS4_dec_create_session_sz \
676 (compound_decode_hdr_maxsz + \
677 decode_create_session_maxsz)
678 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
679 encode_destroy_session_maxsz)
680 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
681 decode_destroy_session_maxsz)
682 #define NFS4_enc_sequence_sz \
683 (compound_decode_hdr_maxsz + \
684 encode_sequence_maxsz)
685 #define NFS4_dec_sequence_sz \
686 (compound_decode_hdr_maxsz + \
687 decode_sequence_maxsz)
688 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
689 encode_sequence_maxsz + \
690 encode_putrootfh_maxsz + \
691 encode_fsinfo_maxsz)
692 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
693 decode_sequence_maxsz + \
694 decode_putrootfh_maxsz + \
695 decode_fsinfo_maxsz)
696 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
697 encode_sequence_maxsz + \
698 encode_reclaim_complete_maxsz)
699 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
700 decode_sequence_maxsz + \
701 decode_reclaim_complete_maxsz)
702
703 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
704 compound_encode_hdr_maxsz +
705 encode_sequence_maxsz +
706 encode_putfh_maxsz +
707 encode_getattr_maxsz) *
708 XDR_UNIT);
709
710 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
711 compound_decode_hdr_maxsz +
712 decode_sequence_maxsz +
713 decode_putfh_maxsz) *
714 XDR_UNIT);
715 #endif /* CONFIG_NFS_V4_1 */
716
717 static const umode_t nfs_type2fmt[] = {
718 [NF4BAD] = 0,
719 [NF4REG] = S_IFREG,
720 [NF4DIR] = S_IFDIR,
721 [NF4BLK] = S_IFBLK,
722 [NF4CHR] = S_IFCHR,
723 [NF4LNK] = S_IFLNK,
724 [NF4SOCK] = S_IFSOCK,
725 [NF4FIFO] = S_IFIFO,
726 [NF4ATTRDIR] = 0,
727 [NF4NAMEDATTR] = 0,
728 };
729
730 struct compound_hdr {
731 int32_t status;
732 uint32_t nops;
733 __be32 * nops_p;
734 uint32_t taglen;
735 char * tag;
736 uint32_t replen; /* expected reply words */
737 u32 minorversion;
738 };
739
740 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
741 {
742 __be32 *p = xdr_reserve_space(xdr, nbytes);
743 BUG_ON(!p);
744 return p;
745 }
746
747 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
748 {
749 __be32 *p;
750
751 p = xdr_reserve_space(xdr, 4 + len);
752 BUG_ON(p == NULL);
753 xdr_encode_opaque(p, str, len);
754 }
755
756 static void encode_compound_hdr(struct xdr_stream *xdr,
757 struct rpc_rqst *req,
758 struct compound_hdr *hdr)
759 {
760 __be32 *p;
761 struct rpc_auth *auth = req->rq_cred->cr_auth;
762
763 /* initialize running count of expected bytes in reply.
764 * NOTE: the replied tag SHOULD be the same is the one sent,
765 * but this is not required as a MUST for the server to do so. */
766 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
767
768 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
769 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
770 p = reserve_space(xdr, 4 + hdr->taglen + 8);
771 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
772 *p++ = cpu_to_be32(hdr->minorversion);
773 hdr->nops_p = p;
774 *p = cpu_to_be32(hdr->nops);
775 }
776
777 static void encode_nops(struct compound_hdr *hdr)
778 {
779 BUG_ON(hdr->nops > NFS4_MAX_OPS);
780 *hdr->nops_p = htonl(hdr->nops);
781 }
782
783 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
784 {
785 __be32 *p;
786
787 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
788 BUG_ON(p == NULL);
789 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
790 }
791
792 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
793 {
794 char owner_name[IDMAP_NAMESZ];
795 char owner_group[IDMAP_NAMESZ];
796 int owner_namelen = 0;
797 int owner_grouplen = 0;
798 __be32 *p;
799 __be32 *q;
800 int len;
801 uint32_t bmval0 = 0;
802 uint32_t bmval1 = 0;
803
804 /*
805 * We reserve enough space to write the entire attribute buffer at once.
806 * In the worst-case, this would be
807 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
808 * = 36 bytes, plus any contribution from variable-length fields
809 * such as owner/group.
810 */
811 len = 16;
812
813 /* Sigh */
814 if (iap->ia_valid & ATTR_SIZE)
815 len += 8;
816 if (iap->ia_valid & ATTR_MODE)
817 len += 4;
818 if (iap->ia_valid & ATTR_UID) {
819 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
820 if (owner_namelen < 0) {
821 dprintk("nfs: couldn't resolve uid %d to string\n",
822 iap->ia_uid);
823 /* XXX */
824 strcpy(owner_name, "nobody");
825 owner_namelen = sizeof("nobody") - 1;
826 /* goto out; */
827 }
828 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
829 }
830 if (iap->ia_valid & ATTR_GID) {
831 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
832 if (owner_grouplen < 0) {
833 dprintk("nfs: couldn't resolve gid %d to string\n",
834 iap->ia_gid);
835 strcpy(owner_group, "nobody");
836 owner_grouplen = sizeof("nobody") - 1;
837 /* goto out; */
838 }
839 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
840 }
841 if (iap->ia_valid & ATTR_ATIME_SET)
842 len += 16;
843 else if (iap->ia_valid & ATTR_ATIME)
844 len += 4;
845 if (iap->ia_valid & ATTR_MTIME_SET)
846 len += 16;
847 else if (iap->ia_valid & ATTR_MTIME)
848 len += 4;
849 p = reserve_space(xdr, len);
850
851 /*
852 * We write the bitmap length now, but leave the bitmap and the attribute
853 * buffer length to be backfilled at the end of this routine.
854 */
855 *p++ = cpu_to_be32(2);
856 q = p;
857 p += 3;
858
859 if (iap->ia_valid & ATTR_SIZE) {
860 bmval0 |= FATTR4_WORD0_SIZE;
861 p = xdr_encode_hyper(p, iap->ia_size);
862 }
863 if (iap->ia_valid & ATTR_MODE) {
864 bmval1 |= FATTR4_WORD1_MODE;
865 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
866 }
867 if (iap->ia_valid & ATTR_UID) {
868 bmval1 |= FATTR4_WORD1_OWNER;
869 p = xdr_encode_opaque(p, owner_name, owner_namelen);
870 }
871 if (iap->ia_valid & ATTR_GID) {
872 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
873 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
874 }
875 if (iap->ia_valid & ATTR_ATIME_SET) {
876 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
877 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
878 *p++ = cpu_to_be32(0);
879 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
880 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
881 }
882 else if (iap->ia_valid & ATTR_ATIME) {
883 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
884 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
885 }
886 if (iap->ia_valid & ATTR_MTIME_SET) {
887 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
888 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
889 *p++ = cpu_to_be32(0);
890 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
891 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
892 }
893 else if (iap->ia_valid & ATTR_MTIME) {
894 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
895 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
896 }
897
898 /*
899 * Now we backfill the bitmap and the attribute buffer length.
900 */
901 if (len != ((char *)p - (char *)q) + 4) {
902 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
903 len, ((char *)p - (char *)q) + 4);
904 BUG();
905 }
906 len = (char *)p - (char *)q - 12;
907 *q++ = htonl(bmval0);
908 *q++ = htonl(bmval1);
909 *q = htonl(len);
910
911 /* out: */
912 }
913
914 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
915 {
916 __be32 *p;
917
918 p = reserve_space(xdr, 8);
919 *p++ = cpu_to_be32(OP_ACCESS);
920 *p = cpu_to_be32(access);
921 hdr->nops++;
922 hdr->replen += decode_access_maxsz;
923 }
924
925 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
926 {
927 __be32 *p;
928
929 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
930 *p++ = cpu_to_be32(OP_CLOSE);
931 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
932 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
933 hdr->nops++;
934 hdr->replen += decode_close_maxsz;
935 }
936
937 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
938 {
939 __be32 *p;
940
941 p = reserve_space(xdr, 16);
942 *p++ = cpu_to_be32(OP_COMMIT);
943 p = xdr_encode_hyper(p, args->offset);
944 *p = cpu_to_be32(args->count);
945 hdr->nops++;
946 hdr->replen += decode_commit_maxsz;
947 }
948
949 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
950 {
951 __be32 *p;
952
953 p = reserve_space(xdr, 8);
954 *p++ = cpu_to_be32(OP_CREATE);
955 *p = cpu_to_be32(create->ftype);
956
957 switch (create->ftype) {
958 case NF4LNK:
959 p = reserve_space(xdr, 4);
960 *p = cpu_to_be32(create->u.symlink.len);
961 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
962 break;
963
964 case NF4BLK: case NF4CHR:
965 p = reserve_space(xdr, 8);
966 *p++ = cpu_to_be32(create->u.device.specdata1);
967 *p = cpu_to_be32(create->u.device.specdata2);
968 break;
969
970 default:
971 break;
972 }
973
974 encode_string(xdr, create->name->len, create->name->name);
975 hdr->nops++;
976 hdr->replen += decode_create_maxsz;
977
978 encode_attrs(xdr, create->attrs, create->server);
979 }
980
981 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
982 {
983 __be32 *p;
984
985 p = reserve_space(xdr, 12);
986 *p++ = cpu_to_be32(OP_GETATTR);
987 *p++ = cpu_to_be32(1);
988 *p = cpu_to_be32(bitmap);
989 hdr->nops++;
990 hdr->replen += decode_getattr_maxsz;
991 }
992
993 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
994 {
995 __be32 *p;
996
997 p = reserve_space(xdr, 16);
998 *p++ = cpu_to_be32(OP_GETATTR);
999 *p++ = cpu_to_be32(2);
1000 *p++ = cpu_to_be32(bm0);
1001 *p = cpu_to_be32(bm1);
1002 hdr->nops++;
1003 hdr->replen += decode_getattr_maxsz;
1004 }
1005
1006 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1007 {
1008 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1009 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1010 }
1011
1012 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1013 {
1014 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
1015 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
1016 }
1017
1018 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1019 {
1020 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1021 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1022 }
1023
1024 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1025 {
1026 __be32 *p;
1027
1028 p = reserve_space(xdr, 4);
1029 *p = cpu_to_be32(OP_GETFH);
1030 hdr->nops++;
1031 hdr->replen += decode_getfh_maxsz;
1032 }
1033
1034 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1035 {
1036 __be32 *p;
1037
1038 p = reserve_space(xdr, 8 + name->len);
1039 *p++ = cpu_to_be32(OP_LINK);
1040 xdr_encode_opaque(p, name->name, name->len);
1041 hdr->nops++;
1042 hdr->replen += decode_link_maxsz;
1043 }
1044
1045 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1046 {
1047 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1048 return block ? NFS4_READW_LT : NFS4_READ_LT;
1049 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1050 }
1051
1052 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1053 {
1054 if (fl->fl_end == OFFSET_MAX)
1055 return ~(uint64_t)0;
1056 return fl->fl_end - fl->fl_start + 1;
1057 }
1058
1059 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1060 {
1061 __be32 *p;
1062
1063 p = reserve_space(xdr, 28);
1064 p = xdr_encode_hyper(p, lowner->clientid);
1065 *p++ = cpu_to_be32(16);
1066 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1067 xdr_encode_hyper(p, lowner->id);
1068 }
1069
1070 /*
1071 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1072 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1073 */
1074 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1075 {
1076 __be32 *p;
1077
1078 p = reserve_space(xdr, 32);
1079 *p++ = cpu_to_be32(OP_LOCK);
1080 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1081 *p++ = cpu_to_be32(args->reclaim);
1082 p = xdr_encode_hyper(p, args->fl->fl_start);
1083 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1084 *p = cpu_to_be32(args->new_lock_owner);
1085 if (args->new_lock_owner){
1086 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1087 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1088 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1089 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1090 encode_lockowner(xdr, &args->lock_owner);
1091 }
1092 else {
1093 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1094 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1095 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1096 }
1097 hdr->nops++;
1098 hdr->replen += decode_lock_maxsz;
1099 }
1100
1101 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1102 {
1103 __be32 *p;
1104
1105 p = reserve_space(xdr, 24);
1106 *p++ = cpu_to_be32(OP_LOCKT);
1107 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1108 p = xdr_encode_hyper(p, args->fl->fl_start);
1109 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1110 encode_lockowner(xdr, &args->lock_owner);
1111 hdr->nops++;
1112 hdr->replen += decode_lockt_maxsz;
1113 }
1114
1115 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1116 {
1117 __be32 *p;
1118
1119 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1120 *p++ = cpu_to_be32(OP_LOCKU);
1121 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1122 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1123 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1124 p = xdr_encode_hyper(p, args->fl->fl_start);
1125 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1126 hdr->nops++;
1127 hdr->replen += decode_locku_maxsz;
1128 }
1129
1130 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1131 {
1132 __be32 *p;
1133
1134 p = reserve_space(xdr, 4);
1135 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1136 encode_lockowner(xdr, lowner);
1137 hdr->nops++;
1138 hdr->replen += decode_release_lockowner_maxsz;
1139 }
1140
1141 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1142 {
1143 int len = name->len;
1144 __be32 *p;
1145
1146 p = reserve_space(xdr, 8 + len);
1147 *p++ = cpu_to_be32(OP_LOOKUP);
1148 xdr_encode_opaque(p, name->name, len);
1149 hdr->nops++;
1150 hdr->replen += decode_lookup_maxsz;
1151 }
1152
1153 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1154 {
1155 __be32 *p;
1156
1157 p = reserve_space(xdr, 8);
1158 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1159 case FMODE_READ:
1160 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1161 break;
1162 case FMODE_WRITE:
1163 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1164 break;
1165 case FMODE_READ|FMODE_WRITE:
1166 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1167 break;
1168 default:
1169 *p++ = cpu_to_be32(0);
1170 }
1171 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1172 }
1173
1174 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1175 {
1176 __be32 *p;
1177 /*
1178 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1179 * owner 4 = 32
1180 */
1181 p = reserve_space(xdr, 8);
1182 *p++ = cpu_to_be32(OP_OPEN);
1183 *p = cpu_to_be32(arg->seqid->sequence->counter);
1184 encode_share_access(xdr, arg->fmode);
1185 p = reserve_space(xdr, 28);
1186 p = xdr_encode_hyper(p, arg->clientid);
1187 *p++ = cpu_to_be32(16);
1188 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1189 xdr_encode_hyper(p, arg->id);
1190 }
1191
1192 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1193 {
1194 __be32 *p;
1195 struct nfs_client *clp;
1196
1197 p = reserve_space(xdr, 4);
1198 switch(arg->open_flags & O_EXCL) {
1199 case 0:
1200 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1201 encode_attrs(xdr, arg->u.attrs, arg->server);
1202 break;
1203 default:
1204 clp = arg->server->nfs_client;
1205 if (clp->cl_mvops->minor_version > 0) {
1206 if (nfs4_has_persistent_session(clp)) {
1207 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1208 encode_attrs(xdr, arg->u.attrs, arg->server);
1209 } else {
1210 struct iattr dummy;
1211
1212 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1213 encode_nfs4_verifier(xdr, &arg->u.verifier);
1214 dummy.ia_valid = 0;
1215 encode_attrs(xdr, &dummy, arg->server);
1216 }
1217 } else {
1218 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1219 encode_nfs4_verifier(xdr, &arg->u.verifier);
1220 }
1221 }
1222 }
1223
1224 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1225 {
1226 __be32 *p;
1227
1228 p = reserve_space(xdr, 4);
1229 switch (arg->open_flags & O_CREAT) {
1230 case 0:
1231 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1232 break;
1233 default:
1234 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1235 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1236 encode_createmode(xdr, arg);
1237 }
1238 }
1239
1240 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1241 {
1242 __be32 *p;
1243
1244 p = reserve_space(xdr, 4);
1245 switch (delegation_type) {
1246 case 0:
1247 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1248 break;
1249 case FMODE_READ:
1250 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1251 break;
1252 case FMODE_WRITE|FMODE_READ:
1253 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1254 break;
1255 default:
1256 BUG();
1257 }
1258 }
1259
1260 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1261 {
1262 __be32 *p;
1263
1264 p = reserve_space(xdr, 4);
1265 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1266 encode_string(xdr, name->len, name->name);
1267 }
1268
1269 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1270 {
1271 __be32 *p;
1272
1273 p = reserve_space(xdr, 4);
1274 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1275 encode_delegation_type(xdr, type);
1276 }
1277
1278 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1279 {
1280 __be32 *p;
1281
1282 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1283 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1284 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1285 encode_string(xdr, name->len, name->name);
1286 }
1287
1288 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1289 {
1290 encode_openhdr(xdr, arg);
1291 encode_opentype(xdr, arg);
1292 switch (arg->claim) {
1293 case NFS4_OPEN_CLAIM_NULL:
1294 encode_claim_null(xdr, arg->name);
1295 break;
1296 case NFS4_OPEN_CLAIM_PREVIOUS:
1297 encode_claim_previous(xdr, arg->u.delegation_type);
1298 break;
1299 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1300 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1301 break;
1302 default:
1303 BUG();
1304 }
1305 hdr->nops++;
1306 hdr->replen += decode_open_maxsz;
1307 }
1308
1309 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1310 {
1311 __be32 *p;
1312
1313 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1314 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1315 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1316 *p = cpu_to_be32(arg->seqid->sequence->counter);
1317 hdr->nops++;
1318 hdr->replen += decode_open_confirm_maxsz;
1319 }
1320
1321 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1322 {
1323 __be32 *p;
1324
1325 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1326 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1327 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1328 *p = cpu_to_be32(arg->seqid->sequence->counter);
1329 encode_share_access(xdr, arg->fmode);
1330 hdr->nops++;
1331 hdr->replen += decode_open_downgrade_maxsz;
1332 }
1333
1334 static void
1335 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1336 {
1337 int len = fh->size;
1338 __be32 *p;
1339
1340 p = reserve_space(xdr, 8 + len);
1341 *p++ = cpu_to_be32(OP_PUTFH);
1342 xdr_encode_opaque(p, fh->data, len);
1343 hdr->nops++;
1344 hdr->replen += decode_putfh_maxsz;
1345 }
1346
1347 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1348 {
1349 __be32 *p;
1350
1351 p = reserve_space(xdr, 4);
1352 *p = cpu_to_be32(OP_PUTROOTFH);
1353 hdr->nops++;
1354 hdr->replen += decode_putrootfh_maxsz;
1355 }
1356
1357 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx)
1358 {
1359 nfs4_stateid stateid;
1360 __be32 *p;
1361
1362 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1363 if (ctx->state != NULL) {
1364 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
1365 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1366 } else
1367 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1368 }
1369
1370 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1371 {
1372 __be32 *p;
1373
1374 p = reserve_space(xdr, 4);
1375 *p = cpu_to_be32(OP_READ);
1376
1377 encode_stateid(xdr, args->context, args->lock_context);
1378
1379 p = reserve_space(xdr, 12);
1380 p = xdr_encode_hyper(p, args->offset);
1381 *p = cpu_to_be32(args->count);
1382 hdr->nops++;
1383 hdr->replen += decode_read_maxsz;
1384 }
1385
1386 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1387 {
1388 uint32_t attrs[2] = {
1389 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1390 FATTR4_WORD1_MOUNTED_ON_FILEID,
1391 };
1392 __be32 *p;
1393
1394 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1395 *p++ = cpu_to_be32(OP_READDIR);
1396 p = xdr_encode_hyper(p, readdir->cookie);
1397 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1398 *p++ = cpu_to_be32(readdir->count >> 1); /* We're not doing readdirplus */
1399 *p++ = cpu_to_be32(readdir->count);
1400 *p++ = cpu_to_be32(2);
1401 /* Switch to mounted_on_fileid if the server supports it */
1402 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1403 attrs[0] &= ~FATTR4_WORD0_FILEID;
1404 else
1405 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1406 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1407 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1408 hdr->nops++;
1409 hdr->replen += decode_readdir_maxsz;
1410 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1411 __func__,
1412 (unsigned long long)readdir->cookie,
1413 ((u32 *)readdir->verifier.data)[0],
1414 ((u32 *)readdir->verifier.data)[1],
1415 attrs[0] & readdir->bitmask[0],
1416 attrs[1] & readdir->bitmask[1]);
1417 }
1418
1419 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1420 {
1421 __be32 *p;
1422
1423 p = reserve_space(xdr, 4);
1424 *p = cpu_to_be32(OP_READLINK);
1425 hdr->nops++;
1426 hdr->replen += decode_readlink_maxsz;
1427 }
1428
1429 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1430 {
1431 __be32 *p;
1432
1433 p = reserve_space(xdr, 8 + name->len);
1434 *p++ = cpu_to_be32(OP_REMOVE);
1435 xdr_encode_opaque(p, name->name, name->len);
1436 hdr->nops++;
1437 hdr->replen += decode_remove_maxsz;
1438 }
1439
1440 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1441 {
1442 __be32 *p;
1443
1444 p = reserve_space(xdr, 4);
1445 *p = cpu_to_be32(OP_RENAME);
1446 encode_string(xdr, oldname->len, oldname->name);
1447 encode_string(xdr, newname->len, newname->name);
1448 hdr->nops++;
1449 hdr->replen += decode_rename_maxsz;
1450 }
1451
1452 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1453 {
1454 __be32 *p;
1455
1456 p = reserve_space(xdr, 12);
1457 *p++ = cpu_to_be32(OP_RENEW);
1458 xdr_encode_hyper(p, client_stateid->cl_clientid);
1459 hdr->nops++;
1460 hdr->replen += decode_renew_maxsz;
1461 }
1462
1463 static void
1464 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1465 {
1466 __be32 *p;
1467
1468 p = reserve_space(xdr, 4);
1469 *p = cpu_to_be32(OP_RESTOREFH);
1470 hdr->nops++;
1471 hdr->replen += decode_restorefh_maxsz;
1472 }
1473
1474 static int
1475 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1476 {
1477 __be32 *p;
1478
1479 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1480 *p++ = cpu_to_be32(OP_SETATTR);
1481 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1482 p = reserve_space(xdr, 2*4);
1483 *p++ = cpu_to_be32(1);
1484 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1485 if (arg->acl_len % 4)
1486 return -EINVAL;
1487 p = reserve_space(xdr, 4);
1488 *p = cpu_to_be32(arg->acl_len);
1489 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1490 hdr->nops++;
1491 hdr->replen += decode_setacl_maxsz;
1492 return 0;
1493 }
1494
1495 static void
1496 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1497 {
1498 __be32 *p;
1499
1500 p = reserve_space(xdr, 4);
1501 *p = cpu_to_be32(OP_SAVEFH);
1502 hdr->nops++;
1503 hdr->replen += decode_savefh_maxsz;
1504 }
1505
1506 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1507 {
1508 __be32 *p;
1509
1510 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1511 *p++ = cpu_to_be32(OP_SETATTR);
1512 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1513 hdr->nops++;
1514 hdr->replen += decode_setattr_maxsz;
1515 encode_attrs(xdr, arg->iap, server);
1516 }
1517
1518 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1519 {
1520 __be32 *p;
1521
1522 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1523 *p++ = cpu_to_be32(OP_SETCLIENTID);
1524 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1525
1526 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1527 p = reserve_space(xdr, 4);
1528 *p = cpu_to_be32(setclientid->sc_prog);
1529 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1530 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1531 p = reserve_space(xdr, 4);
1532 *p = cpu_to_be32(setclientid->sc_cb_ident);
1533 hdr->nops++;
1534 hdr->replen += decode_setclientid_maxsz;
1535 }
1536
1537 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1538 {
1539 __be32 *p;
1540
1541 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1542 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1543 p = xdr_encode_hyper(p, arg->clientid);
1544 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
1545 hdr->nops++;
1546 hdr->replen += decode_setclientid_confirm_maxsz;
1547 }
1548
1549 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1550 {
1551 __be32 *p;
1552
1553 p = reserve_space(xdr, 4);
1554 *p = cpu_to_be32(OP_WRITE);
1555
1556 encode_stateid(xdr, args->context, args->lock_context);
1557
1558 p = reserve_space(xdr, 16);
1559 p = xdr_encode_hyper(p, args->offset);
1560 *p++ = cpu_to_be32(args->stable);
1561 *p = cpu_to_be32(args->count);
1562
1563 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1564 hdr->nops++;
1565 hdr->replen += decode_write_maxsz;
1566 }
1567
1568 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1569 {
1570 __be32 *p;
1571
1572 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1573
1574 *p++ = cpu_to_be32(OP_DELEGRETURN);
1575 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1576 hdr->nops++;
1577 hdr->replen += decode_delegreturn_maxsz;
1578 }
1579
1580 #if defined(CONFIG_NFS_V4_1)
1581 /* NFSv4.1 operations */
1582 static void encode_exchange_id(struct xdr_stream *xdr,
1583 struct nfs41_exchange_id_args *args,
1584 struct compound_hdr *hdr)
1585 {
1586 __be32 *p;
1587
1588 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1589 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1590 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1591
1592 encode_string(xdr, args->id_len, args->id);
1593
1594 p = reserve_space(xdr, 12);
1595 *p++ = cpu_to_be32(args->flags);
1596 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1597 *p = cpu_to_be32(0); /* zero length implementation id array */
1598 hdr->nops++;
1599 hdr->replen += decode_exchange_id_maxsz;
1600 }
1601
1602 static void encode_create_session(struct xdr_stream *xdr,
1603 struct nfs41_create_session_args *args,
1604 struct compound_hdr *hdr)
1605 {
1606 __be32 *p;
1607 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1608 uint32_t len;
1609 struct nfs_client *clp = args->client;
1610 u32 max_resp_sz_cached;
1611
1612 /*
1613 * Assumes OPEN is the biggest non-idempotent compound.
1614 * 2 is the verifier.
1615 */
1616 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1617 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1618
1619 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1620 clp->cl_ipaddr);
1621
1622 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1623 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1624 p = xdr_encode_hyper(p, clp->cl_ex_clid);
1625 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1626 *p++ = cpu_to_be32(args->flags); /*flags */
1627
1628 /* Fore Channel */
1629 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1630 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1631 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1632 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1633 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1634 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1635 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1636
1637 /* Back Channel */
1638 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1639 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1640 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1641 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1642 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1643 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1644 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1645
1646 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1647 *p++ = cpu_to_be32(1);
1648 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1649
1650 /* authsys_parms rfc1831 */
1651 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1652 p = xdr_encode_opaque(p, machine_name, len);
1653 *p++ = cpu_to_be32(0); /* UID */
1654 *p++ = cpu_to_be32(0); /* GID */
1655 *p = cpu_to_be32(0); /* No more gids */
1656 hdr->nops++;
1657 hdr->replen += decode_create_session_maxsz;
1658 }
1659
1660 static void encode_destroy_session(struct xdr_stream *xdr,
1661 struct nfs4_session *session,
1662 struct compound_hdr *hdr)
1663 {
1664 __be32 *p;
1665 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1666 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1667 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1668 hdr->nops++;
1669 hdr->replen += decode_destroy_session_maxsz;
1670 }
1671
1672 static void encode_reclaim_complete(struct xdr_stream *xdr,
1673 struct nfs41_reclaim_complete_args *args,
1674 struct compound_hdr *hdr)
1675 {
1676 __be32 *p;
1677
1678 p = reserve_space(xdr, 8);
1679 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1680 *p++ = cpu_to_be32(args->one_fs);
1681 hdr->nops++;
1682 hdr->replen += decode_reclaim_complete_maxsz;
1683 }
1684 #endif /* CONFIG_NFS_V4_1 */
1685
1686 static void encode_sequence(struct xdr_stream *xdr,
1687 const struct nfs4_sequence_args *args,
1688 struct compound_hdr *hdr)
1689 {
1690 #if defined(CONFIG_NFS_V4_1)
1691 struct nfs4_session *session = args->sa_session;
1692 struct nfs4_slot_table *tp;
1693 struct nfs4_slot *slot;
1694 __be32 *p;
1695
1696 if (!session)
1697 return;
1698
1699 tp = &session->fc_slot_table;
1700
1701 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1702 slot = tp->slots + args->sa_slotid;
1703
1704 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1705 *p++ = cpu_to_be32(OP_SEQUENCE);
1706
1707 /*
1708 * Sessionid + seqid + slotid + max slotid + cache_this
1709 */
1710 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1711 "max_slotid=%d cache_this=%d\n",
1712 __func__,
1713 ((u32 *)session->sess_id.data)[0],
1714 ((u32 *)session->sess_id.data)[1],
1715 ((u32 *)session->sess_id.data)[2],
1716 ((u32 *)session->sess_id.data)[3],
1717 slot->seq_nr, args->sa_slotid,
1718 tp->highest_used_slotid, args->sa_cache_this);
1719 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1720 *p++ = cpu_to_be32(slot->seq_nr);
1721 *p++ = cpu_to_be32(args->sa_slotid);
1722 *p++ = cpu_to_be32(tp->highest_used_slotid);
1723 *p = cpu_to_be32(args->sa_cache_this);
1724 hdr->nops++;
1725 hdr->replen += decode_sequence_maxsz;
1726 #endif /* CONFIG_NFS_V4_1 */
1727 }
1728
1729 /*
1730 * END OF "GENERIC" ENCODE ROUTINES.
1731 */
1732
1733 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1734 {
1735 #if defined(CONFIG_NFS_V4_1)
1736 if (args->sa_session)
1737 return args->sa_session->clp->cl_mvops->minor_version;
1738 #endif /* CONFIG_NFS_V4_1 */
1739 return 0;
1740 }
1741
1742 /*
1743 * Encode an ACCESS request
1744 */
1745 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1746 {
1747 struct xdr_stream xdr;
1748 struct compound_hdr hdr = {
1749 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1750 };
1751
1752 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1753 encode_compound_hdr(&xdr, req, &hdr);
1754 encode_sequence(&xdr, &args->seq_args, &hdr);
1755 encode_putfh(&xdr, args->fh, &hdr);
1756 encode_access(&xdr, args->access, &hdr);
1757 encode_getfattr(&xdr, args->bitmask, &hdr);
1758 encode_nops(&hdr);
1759 return 0;
1760 }
1761
1762 /*
1763 * Encode LOOKUP request
1764 */
1765 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1766 {
1767 struct xdr_stream xdr;
1768 struct compound_hdr hdr = {
1769 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1770 };
1771
1772 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1773 encode_compound_hdr(&xdr, req, &hdr);
1774 encode_sequence(&xdr, &args->seq_args, &hdr);
1775 encode_putfh(&xdr, args->dir_fh, &hdr);
1776 encode_lookup(&xdr, args->name, &hdr);
1777 encode_getfh(&xdr, &hdr);
1778 encode_getfattr(&xdr, args->bitmask, &hdr);
1779 encode_nops(&hdr);
1780 return 0;
1781 }
1782
1783 /*
1784 * Encode LOOKUP_ROOT request
1785 */
1786 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1787 {
1788 struct xdr_stream xdr;
1789 struct compound_hdr hdr = {
1790 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1791 };
1792
1793 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1794 encode_compound_hdr(&xdr, req, &hdr);
1795 encode_sequence(&xdr, &args->seq_args, &hdr);
1796 encode_putrootfh(&xdr, &hdr);
1797 encode_getfh(&xdr, &hdr);
1798 encode_getfattr(&xdr, args->bitmask, &hdr);
1799 encode_nops(&hdr);
1800 return 0;
1801 }
1802
1803 /*
1804 * Encode REMOVE request
1805 */
1806 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1807 {
1808 struct xdr_stream xdr;
1809 struct compound_hdr hdr = {
1810 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1811 };
1812
1813 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1814 encode_compound_hdr(&xdr, req, &hdr);
1815 encode_sequence(&xdr, &args->seq_args, &hdr);
1816 encode_putfh(&xdr, args->fh, &hdr);
1817 encode_remove(&xdr, &args->name, &hdr);
1818 encode_getfattr(&xdr, args->bitmask, &hdr);
1819 encode_nops(&hdr);
1820 return 0;
1821 }
1822
1823 /*
1824 * Encode RENAME request
1825 */
1826 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1827 {
1828 struct xdr_stream xdr;
1829 struct compound_hdr hdr = {
1830 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1831 };
1832
1833 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1834 encode_compound_hdr(&xdr, req, &hdr);
1835 encode_sequence(&xdr, &args->seq_args, &hdr);
1836 encode_putfh(&xdr, args->old_dir, &hdr);
1837 encode_savefh(&xdr, &hdr);
1838 encode_putfh(&xdr, args->new_dir, &hdr);
1839 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1840 encode_getfattr(&xdr, args->bitmask, &hdr);
1841 encode_restorefh(&xdr, &hdr);
1842 encode_getfattr(&xdr, args->bitmask, &hdr);
1843 encode_nops(&hdr);
1844 return 0;
1845 }
1846
1847 /*
1848 * Encode LINK request
1849 */
1850 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1851 {
1852 struct xdr_stream xdr;
1853 struct compound_hdr hdr = {
1854 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1855 };
1856
1857 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1858 encode_compound_hdr(&xdr, req, &hdr);
1859 encode_sequence(&xdr, &args->seq_args, &hdr);
1860 encode_putfh(&xdr, args->fh, &hdr);
1861 encode_savefh(&xdr, &hdr);
1862 encode_putfh(&xdr, args->dir_fh, &hdr);
1863 encode_link(&xdr, args->name, &hdr);
1864 encode_getfattr(&xdr, args->bitmask, &hdr);
1865 encode_restorefh(&xdr, &hdr);
1866 encode_getfattr(&xdr, args->bitmask, &hdr);
1867 encode_nops(&hdr);
1868 return 0;
1869 }
1870
1871 /*
1872 * Encode CREATE request
1873 */
1874 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1875 {
1876 struct xdr_stream xdr;
1877 struct compound_hdr hdr = {
1878 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1879 };
1880
1881 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1882 encode_compound_hdr(&xdr, req, &hdr);
1883 encode_sequence(&xdr, &args->seq_args, &hdr);
1884 encode_putfh(&xdr, args->dir_fh, &hdr);
1885 encode_savefh(&xdr, &hdr);
1886 encode_create(&xdr, args, &hdr);
1887 encode_getfh(&xdr, &hdr);
1888 encode_getfattr(&xdr, args->bitmask, &hdr);
1889 encode_restorefh(&xdr, &hdr);
1890 encode_getfattr(&xdr, args->bitmask, &hdr);
1891 encode_nops(&hdr);
1892 return 0;
1893 }
1894
1895 /*
1896 * Encode SYMLINK request
1897 */
1898 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1899 {
1900 return nfs4_xdr_enc_create(req, p, args);
1901 }
1902
1903 /*
1904 * Encode GETATTR request
1905 */
1906 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1907 {
1908 struct xdr_stream xdr;
1909 struct compound_hdr hdr = {
1910 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1911 };
1912
1913 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1914 encode_compound_hdr(&xdr, req, &hdr);
1915 encode_sequence(&xdr, &args->seq_args, &hdr);
1916 encode_putfh(&xdr, args->fh, &hdr);
1917 encode_getfattr(&xdr, args->bitmask, &hdr);
1918 encode_nops(&hdr);
1919 return 0;
1920 }
1921
1922 /*
1923 * Encode a CLOSE request
1924 */
1925 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1926 {
1927 struct xdr_stream xdr;
1928 struct compound_hdr hdr = {
1929 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1930 };
1931
1932 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1933 encode_compound_hdr(&xdr, req, &hdr);
1934 encode_sequence(&xdr, &args->seq_args, &hdr);
1935 encode_putfh(&xdr, args->fh, &hdr);
1936 encode_close(&xdr, args, &hdr);
1937 encode_getfattr(&xdr, args->bitmask, &hdr);
1938 encode_nops(&hdr);
1939 return 0;
1940 }
1941
1942 /*
1943 * Encode an OPEN request
1944 */
1945 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1946 {
1947 struct xdr_stream xdr;
1948 struct compound_hdr hdr = {
1949 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1950 };
1951
1952 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1953 encode_compound_hdr(&xdr, req, &hdr);
1954 encode_sequence(&xdr, &args->seq_args, &hdr);
1955 encode_putfh(&xdr, args->fh, &hdr);
1956 encode_savefh(&xdr, &hdr);
1957 encode_open(&xdr, args, &hdr);
1958 encode_getfh(&xdr, &hdr);
1959 encode_getfattr(&xdr, args->bitmask, &hdr);
1960 encode_restorefh(&xdr, &hdr);
1961 encode_getfattr(&xdr, args->bitmask, &hdr);
1962 encode_nops(&hdr);
1963 return 0;
1964 }
1965
1966 /*
1967 * Encode an OPEN_CONFIRM request
1968 */
1969 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1970 {
1971 struct xdr_stream xdr;
1972 struct compound_hdr hdr = {
1973 .nops = 0,
1974 };
1975
1976 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1977 encode_compound_hdr(&xdr, req, &hdr);
1978 encode_putfh(&xdr, args->fh, &hdr);
1979 encode_open_confirm(&xdr, args, &hdr);
1980 encode_nops(&hdr);
1981 return 0;
1982 }
1983
1984 /*
1985 * Encode an OPEN request with no attributes.
1986 */
1987 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1988 {
1989 struct xdr_stream xdr;
1990 struct compound_hdr hdr = {
1991 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1992 };
1993
1994 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1995 encode_compound_hdr(&xdr, req, &hdr);
1996 encode_sequence(&xdr, &args->seq_args, &hdr);
1997 encode_putfh(&xdr, args->fh, &hdr);
1998 encode_open(&xdr, args, &hdr);
1999 encode_getfattr(&xdr, args->bitmask, &hdr);
2000 encode_nops(&hdr);
2001 return 0;
2002 }
2003
2004 /*
2005 * Encode an OPEN_DOWNGRADE request
2006 */
2007 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
2008 {
2009 struct xdr_stream xdr;
2010 struct compound_hdr hdr = {
2011 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2012 };
2013
2014 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2015 encode_compound_hdr(&xdr, req, &hdr);
2016 encode_sequence(&xdr, &args->seq_args, &hdr);
2017 encode_putfh(&xdr, args->fh, &hdr);
2018 encode_open_downgrade(&xdr, args, &hdr);
2019 encode_getfattr(&xdr, args->bitmask, &hdr);
2020 encode_nops(&hdr);
2021 return 0;
2022 }
2023
2024 /*
2025 * Encode a LOCK request
2026 */
2027 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
2028 {
2029 struct xdr_stream xdr;
2030 struct compound_hdr hdr = {
2031 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2032 };
2033
2034 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2035 encode_compound_hdr(&xdr, req, &hdr);
2036 encode_sequence(&xdr, &args->seq_args, &hdr);
2037 encode_putfh(&xdr, args->fh, &hdr);
2038 encode_lock(&xdr, args, &hdr);
2039 encode_nops(&hdr);
2040 return 0;
2041 }
2042
2043 /*
2044 * Encode a LOCKT request
2045 */
2046 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
2047 {
2048 struct xdr_stream xdr;
2049 struct compound_hdr hdr = {
2050 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2051 };
2052
2053 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2054 encode_compound_hdr(&xdr, req, &hdr);
2055 encode_sequence(&xdr, &args->seq_args, &hdr);
2056 encode_putfh(&xdr, args->fh, &hdr);
2057 encode_lockt(&xdr, args, &hdr);
2058 encode_nops(&hdr);
2059 return 0;
2060 }
2061
2062 /*
2063 * Encode a LOCKU request
2064 */
2065 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
2066 {
2067 struct xdr_stream xdr;
2068 struct compound_hdr hdr = {
2069 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2070 };
2071
2072 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2073 encode_compound_hdr(&xdr, req, &hdr);
2074 encode_sequence(&xdr, &args->seq_args, &hdr);
2075 encode_putfh(&xdr, args->fh, &hdr);
2076 encode_locku(&xdr, args, &hdr);
2077 encode_nops(&hdr);
2078 return 0;
2079 }
2080
2081 static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args)
2082 {
2083 struct xdr_stream xdr;
2084 struct compound_hdr hdr = {
2085 .minorversion = 0,
2086 };
2087
2088 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2089 encode_compound_hdr(&xdr, req, &hdr);
2090 encode_release_lockowner(&xdr, &args->lock_owner, &hdr);
2091 encode_nops(&hdr);
2092 return 0;
2093 }
2094
2095 /*
2096 * Encode a READLINK request
2097 */
2098 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
2099 {
2100 struct xdr_stream xdr;
2101 struct compound_hdr hdr = {
2102 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2103 };
2104
2105 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2106 encode_compound_hdr(&xdr, req, &hdr);
2107 encode_sequence(&xdr, &args->seq_args, &hdr);
2108 encode_putfh(&xdr, args->fh, &hdr);
2109 encode_readlink(&xdr, args, req, &hdr);
2110
2111 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2112 args->pgbase, args->pglen);
2113 encode_nops(&hdr);
2114 return 0;
2115 }
2116
2117 /*
2118 * Encode a READDIR request
2119 */
2120 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
2121 {
2122 struct xdr_stream xdr;
2123 struct compound_hdr hdr = {
2124 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2125 };
2126
2127 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2128 encode_compound_hdr(&xdr, req, &hdr);
2129 encode_sequence(&xdr, &args->seq_args, &hdr);
2130 encode_putfh(&xdr, args->fh, &hdr);
2131 encode_readdir(&xdr, args, req, &hdr);
2132
2133 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2134 args->pgbase, args->count);
2135 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2136 __func__, hdr.replen << 2, args->pages,
2137 args->pgbase, args->count);
2138 encode_nops(&hdr);
2139 return 0;
2140 }
2141
2142 /*
2143 * Encode a READ request
2144 */
2145 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
2146 {
2147 struct xdr_stream xdr;
2148 struct compound_hdr hdr = {
2149 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2150 };
2151
2152 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2153 encode_compound_hdr(&xdr, req, &hdr);
2154 encode_sequence(&xdr, &args->seq_args, &hdr);
2155 encode_putfh(&xdr, args->fh, &hdr);
2156 encode_read(&xdr, args, &hdr);
2157
2158 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2159 args->pages, args->pgbase, args->count);
2160 req->rq_rcv_buf.flags |= XDRBUF_READ;
2161 encode_nops(&hdr);
2162 return 0;
2163 }
2164
2165 /*
2166 * Encode an SETATTR request
2167 */
2168 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
2169 {
2170 struct xdr_stream xdr;
2171 struct compound_hdr hdr = {
2172 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2173 };
2174
2175 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2176 encode_compound_hdr(&xdr, req, &hdr);
2177 encode_sequence(&xdr, &args->seq_args, &hdr);
2178 encode_putfh(&xdr, args->fh, &hdr);
2179 encode_setattr(&xdr, args, args->server, &hdr);
2180 encode_getfattr(&xdr, args->bitmask, &hdr);
2181 encode_nops(&hdr);
2182 return 0;
2183 }
2184
2185 /*
2186 * Encode a GETACL request
2187 */
2188 static int
2189 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
2190 struct nfs_getaclargs *args)
2191 {
2192 struct xdr_stream xdr;
2193 struct compound_hdr hdr = {
2194 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2195 };
2196 uint32_t replen;
2197
2198 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2199 encode_compound_hdr(&xdr, req, &hdr);
2200 encode_sequence(&xdr, &args->seq_args, &hdr);
2201 encode_putfh(&xdr, args->fh, &hdr);
2202 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2203 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2204
2205 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2206 args->acl_pages, args->acl_pgbase, args->acl_len);
2207 encode_nops(&hdr);
2208 return 0;
2209 }
2210
2211 /*
2212 * Encode a WRITE request
2213 */
2214 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2215 {
2216 struct xdr_stream xdr;
2217 struct compound_hdr hdr = {
2218 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2219 };
2220
2221 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2222 encode_compound_hdr(&xdr, req, &hdr);
2223 encode_sequence(&xdr, &args->seq_args, &hdr);
2224 encode_putfh(&xdr, args->fh, &hdr);
2225 encode_write(&xdr, args, &hdr);
2226 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2227 encode_getfattr(&xdr, args->bitmask, &hdr);
2228 encode_nops(&hdr);
2229 return 0;
2230 }
2231
2232 /*
2233 * a COMMIT request
2234 */
2235 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2236 {
2237 struct xdr_stream xdr;
2238 struct compound_hdr hdr = {
2239 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2240 };
2241
2242 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2243 encode_compound_hdr(&xdr, req, &hdr);
2244 encode_sequence(&xdr, &args->seq_args, &hdr);
2245 encode_putfh(&xdr, args->fh, &hdr);
2246 encode_commit(&xdr, args, &hdr);
2247 encode_getfattr(&xdr, args->bitmask, &hdr);
2248 encode_nops(&hdr);
2249 return 0;
2250 }
2251
2252 /*
2253 * FSINFO request
2254 */
2255 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2256 {
2257 struct xdr_stream xdr;
2258 struct compound_hdr hdr = {
2259 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2260 };
2261
2262 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2263 encode_compound_hdr(&xdr, req, &hdr);
2264 encode_sequence(&xdr, &args->seq_args, &hdr);
2265 encode_putfh(&xdr, args->fh, &hdr);
2266 encode_fsinfo(&xdr, args->bitmask, &hdr);
2267 encode_nops(&hdr);
2268 return 0;
2269 }
2270
2271 /*
2272 * a PATHCONF request
2273 */
2274 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2275 {
2276 struct xdr_stream xdr;
2277 struct compound_hdr hdr = {
2278 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2279 };
2280
2281 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2282 encode_compound_hdr(&xdr, req, &hdr);
2283 encode_sequence(&xdr, &args->seq_args, &hdr);
2284 encode_putfh(&xdr, args->fh, &hdr);
2285 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2286 &hdr);
2287 encode_nops(&hdr);
2288 return 0;
2289 }
2290
2291 /*
2292 * a STATFS request
2293 */
2294 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2295 {
2296 struct xdr_stream xdr;
2297 struct compound_hdr hdr = {
2298 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2299 };
2300
2301 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2302 encode_compound_hdr(&xdr, req, &hdr);
2303 encode_sequence(&xdr, &args->seq_args, &hdr);
2304 encode_putfh(&xdr, args->fh, &hdr);
2305 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2306 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2307 encode_nops(&hdr);
2308 return 0;
2309 }
2310
2311 /*
2312 * GETATTR_BITMAP request
2313 */
2314 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2315 struct nfs4_server_caps_arg *args)
2316 {
2317 struct xdr_stream xdr;
2318 struct compound_hdr hdr = {
2319 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2320 };
2321
2322 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2323 encode_compound_hdr(&xdr, req, &hdr);
2324 encode_sequence(&xdr, &args->seq_args, &hdr);
2325 encode_putfh(&xdr, args->fhandle, &hdr);
2326 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2327 FATTR4_WORD0_LINK_SUPPORT|
2328 FATTR4_WORD0_SYMLINK_SUPPORT|
2329 FATTR4_WORD0_ACLSUPPORT, &hdr);
2330 encode_nops(&hdr);
2331 return 0;
2332 }
2333
2334 /*
2335 * a RENEW request
2336 */
2337 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2338 {
2339 struct xdr_stream xdr;
2340 struct compound_hdr hdr = {
2341 .nops = 0,
2342 };
2343
2344 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2345 encode_compound_hdr(&xdr, req, &hdr);
2346 encode_renew(&xdr, clp, &hdr);
2347 encode_nops(&hdr);
2348 return 0;
2349 }
2350
2351 /*
2352 * a SETCLIENTID request
2353 */
2354 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2355 {
2356 struct xdr_stream xdr;
2357 struct compound_hdr hdr = {
2358 .nops = 0,
2359 };
2360
2361 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2362 encode_compound_hdr(&xdr, req, &hdr);
2363 encode_setclientid(&xdr, sc, &hdr);
2364 encode_nops(&hdr);
2365 return 0;
2366 }
2367
2368 /*
2369 * a SETCLIENTID_CONFIRM request
2370 */
2371 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg)
2372 {
2373 struct xdr_stream xdr;
2374 struct compound_hdr hdr = {
2375 .nops = 0,
2376 };
2377 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2378
2379 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2380 encode_compound_hdr(&xdr, req, &hdr);
2381 encode_setclientid_confirm(&xdr, arg, &hdr);
2382 encode_putrootfh(&xdr, &hdr);
2383 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2384 encode_nops(&hdr);
2385 return 0;
2386 }
2387
2388 /*
2389 * DELEGRETURN request
2390 */
2391 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2392 {
2393 struct xdr_stream xdr;
2394 struct compound_hdr hdr = {
2395 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2396 };
2397
2398 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2399 encode_compound_hdr(&xdr, req, &hdr);
2400 encode_sequence(&xdr, &args->seq_args, &hdr);
2401 encode_putfh(&xdr, args->fhandle, &hdr);
2402 encode_delegreturn(&xdr, args->stateid, &hdr);
2403 encode_getfattr(&xdr, args->bitmask, &hdr);
2404 encode_nops(&hdr);
2405 return 0;
2406 }
2407
2408 /*
2409 * Encode FS_LOCATIONS request
2410 */
2411 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2412 {
2413 struct xdr_stream xdr;
2414 struct compound_hdr hdr = {
2415 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2416 };
2417 uint32_t replen;
2418
2419 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2420 encode_compound_hdr(&xdr, req, &hdr);
2421 encode_sequence(&xdr, &args->seq_args, &hdr);
2422 encode_putfh(&xdr, args->dir_fh, &hdr);
2423 encode_lookup(&xdr, args->name, &hdr);
2424 replen = hdr.replen; /* get the attribute into args->page */
2425 encode_fs_locations(&xdr, args->bitmask, &hdr);
2426
2427 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2428 0, PAGE_SIZE);
2429 encode_nops(&hdr);
2430 return 0;
2431 }
2432
2433 #if defined(CONFIG_NFS_V4_1)
2434 /*
2435 * EXCHANGE_ID request
2436 */
2437 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2438 struct nfs41_exchange_id_args *args)
2439 {
2440 struct xdr_stream xdr;
2441 struct compound_hdr hdr = {
2442 .minorversion = args->client->cl_mvops->minor_version,
2443 };
2444
2445 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2446 encode_compound_hdr(&xdr, req, &hdr);
2447 encode_exchange_id(&xdr, args, &hdr);
2448 encode_nops(&hdr);
2449 return 0;
2450 }
2451
2452 /*
2453 * a CREATE_SESSION request
2454 */
2455 static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
2456 struct nfs41_create_session_args *args)
2457 {
2458 struct xdr_stream xdr;
2459 struct compound_hdr hdr = {
2460 .minorversion = args->client->cl_mvops->minor_version,
2461 };
2462
2463 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2464 encode_compound_hdr(&xdr, req, &hdr);
2465 encode_create_session(&xdr, args, &hdr);
2466 encode_nops(&hdr);
2467 return 0;
2468 }
2469
2470 /*
2471 * a DESTROY_SESSION request
2472 */
2473 static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
2474 struct nfs4_session *session)
2475 {
2476 struct xdr_stream xdr;
2477 struct compound_hdr hdr = {
2478 .minorversion = session->clp->cl_mvops->minor_version,
2479 };
2480
2481 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2482 encode_compound_hdr(&xdr, req, &hdr);
2483 encode_destroy_session(&xdr, session, &hdr);
2484 encode_nops(&hdr);
2485 return 0;
2486 }
2487
2488 /*
2489 * a SEQUENCE request
2490 */
2491 static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
2492 struct nfs4_sequence_args *args)
2493 {
2494 struct xdr_stream xdr;
2495 struct compound_hdr hdr = {
2496 .minorversion = nfs4_xdr_minorversion(args),
2497 };
2498
2499 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2500 encode_compound_hdr(&xdr, req, &hdr);
2501 encode_sequence(&xdr, args, &hdr);
2502 encode_nops(&hdr);
2503 return 0;
2504 }
2505
2506 /*
2507 * a GET_LEASE_TIME request
2508 */
2509 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2510 struct nfs4_get_lease_time_args *args)
2511 {
2512 struct xdr_stream xdr;
2513 struct compound_hdr hdr = {
2514 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2515 };
2516 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2517
2518 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2519 encode_compound_hdr(&xdr, req, &hdr);
2520 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2521 encode_putrootfh(&xdr, &hdr);
2522 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2523 encode_nops(&hdr);
2524 return 0;
2525 }
2526
2527 /*
2528 * a RECLAIM_COMPLETE request
2529 */
2530 static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
2531 struct nfs41_reclaim_complete_args *args)
2532 {
2533 struct xdr_stream xdr;
2534 struct compound_hdr hdr = {
2535 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2536 };
2537
2538 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2539 encode_compound_hdr(&xdr, req, &hdr);
2540 encode_sequence(&xdr, &args->seq_args, &hdr);
2541 encode_reclaim_complete(&xdr, args, &hdr);
2542 encode_nops(&hdr);
2543 return 0;
2544 }
2545
2546 #endif /* CONFIG_NFS_V4_1 */
2547
2548 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2549 {
2550 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2551 "Remaining buffer length is %tu words.\n",
2552 func, xdr->end - xdr->p);
2553 }
2554
2555 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2556 {
2557 __be32 *p;
2558
2559 p = xdr_inline_decode(xdr, 4);
2560 if (unlikely(!p))
2561 goto out_overflow;
2562 *len = be32_to_cpup(p);
2563 p = xdr_inline_decode(xdr, *len);
2564 if (unlikely(!p))
2565 goto out_overflow;
2566 *string = (char *)p;
2567 return 0;
2568 out_overflow:
2569 print_overflow_msg(__func__, xdr);
2570 return -EIO;
2571 }
2572
2573 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2574 {
2575 __be32 *p;
2576
2577 p = xdr_inline_decode(xdr, 8);
2578 if (unlikely(!p))
2579 goto out_overflow;
2580 hdr->status = be32_to_cpup(p++);
2581 hdr->taglen = be32_to_cpup(p);
2582
2583 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2584 if (unlikely(!p))
2585 goto out_overflow;
2586 hdr->tag = (char *)p;
2587 p += XDR_QUADLEN(hdr->taglen);
2588 hdr->nops = be32_to_cpup(p);
2589 if (unlikely(hdr->nops < 1))
2590 return nfs4_stat_to_errno(hdr->status);
2591 return 0;
2592 out_overflow:
2593 print_overflow_msg(__func__, xdr);
2594 return -EIO;
2595 }
2596
2597 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2598 {
2599 __be32 *p;
2600 uint32_t opnum;
2601 int32_t nfserr;
2602
2603 p = xdr_inline_decode(xdr, 8);
2604 if (unlikely(!p))
2605 goto out_overflow;
2606 opnum = be32_to_cpup(p++);
2607 if (opnum != expected) {
2608 dprintk("nfs: Server returned operation"
2609 " %d but we issued a request for %d\n",
2610 opnum, expected);
2611 return -EIO;
2612 }
2613 nfserr = be32_to_cpup(p);
2614 if (nfserr != NFS_OK)
2615 return nfs4_stat_to_errno(nfserr);
2616 return 0;
2617 out_overflow:
2618 print_overflow_msg(__func__, xdr);
2619 return -EIO;
2620 }
2621
2622 /* Dummy routine */
2623 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2624 {
2625 __be32 *p;
2626 unsigned int strlen;
2627 char *str;
2628
2629 p = xdr_inline_decode(xdr, 12);
2630 if (likely(p))
2631 return decode_opaque_inline(xdr, &strlen, &str);
2632 print_overflow_msg(__func__, xdr);
2633 return -EIO;
2634 }
2635
2636 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2637 {
2638 uint32_t bmlen;
2639 __be32 *p;
2640
2641 p = xdr_inline_decode(xdr, 4);
2642 if (unlikely(!p))
2643 goto out_overflow;
2644 bmlen = be32_to_cpup(p);
2645
2646 bitmap[0] = bitmap[1] = 0;
2647 p = xdr_inline_decode(xdr, (bmlen << 2));
2648 if (unlikely(!p))
2649 goto out_overflow;
2650 if (bmlen > 0) {
2651 bitmap[0] = be32_to_cpup(p++);
2652 if (bmlen > 1)
2653 bitmap[1] = be32_to_cpup(p);
2654 }
2655 return 0;
2656 out_overflow:
2657 print_overflow_msg(__func__, xdr);
2658 return -EIO;
2659 }
2660
2661 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2662 {
2663 __be32 *p;
2664
2665 p = xdr_inline_decode(xdr, 4);
2666 if (unlikely(!p))
2667 goto out_overflow;
2668 *attrlen = be32_to_cpup(p);
2669 *savep = xdr->p;
2670 return 0;
2671 out_overflow:
2672 print_overflow_msg(__func__, xdr);
2673 return -EIO;
2674 }
2675
2676 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2677 {
2678 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2679 decode_attr_bitmap(xdr, bitmask);
2680 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2681 } else
2682 bitmask[0] = bitmask[1] = 0;
2683 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2684 return 0;
2685 }
2686
2687 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2688 {
2689 __be32 *p;
2690 int ret = 0;
2691
2692 *type = 0;
2693 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2694 return -EIO;
2695 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2696 p = xdr_inline_decode(xdr, 4);
2697 if (unlikely(!p))
2698 goto out_overflow;
2699 *type = be32_to_cpup(p);
2700 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2701 dprintk("%s: bad type %d\n", __func__, *type);
2702 return -EIO;
2703 }
2704 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2705 ret = NFS_ATTR_FATTR_TYPE;
2706 }
2707 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2708 return ret;
2709 out_overflow:
2710 print_overflow_msg(__func__, xdr);
2711 return -EIO;
2712 }
2713
2714 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2715 {
2716 __be32 *p;
2717 int ret = 0;
2718
2719 *change = 0;
2720 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2721 return -EIO;
2722 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2723 p = xdr_inline_decode(xdr, 8);
2724 if (unlikely(!p))
2725 goto out_overflow;
2726 xdr_decode_hyper(p, change);
2727 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2728 ret = NFS_ATTR_FATTR_CHANGE;
2729 }
2730 dprintk("%s: change attribute=%Lu\n", __func__,
2731 (unsigned long long)*change);
2732 return ret;
2733 out_overflow:
2734 print_overflow_msg(__func__, xdr);
2735 return -EIO;
2736 }
2737
2738 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2739 {
2740 __be32 *p;
2741 int ret = 0;
2742
2743 *size = 0;
2744 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2745 return -EIO;
2746 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2747 p = xdr_inline_decode(xdr, 8);
2748 if (unlikely(!p))
2749 goto out_overflow;
2750 xdr_decode_hyper(p, size);
2751 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2752 ret = NFS_ATTR_FATTR_SIZE;
2753 }
2754 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2755 return ret;
2756 out_overflow:
2757 print_overflow_msg(__func__, xdr);
2758 return -EIO;
2759 }
2760
2761 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2762 {
2763 __be32 *p;
2764
2765 *res = 0;
2766 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2767 return -EIO;
2768 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2769 p = xdr_inline_decode(xdr, 4);
2770 if (unlikely(!p))
2771 goto out_overflow;
2772 *res = be32_to_cpup(p);
2773 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2774 }
2775 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2776 return 0;
2777 out_overflow:
2778 print_overflow_msg(__func__, xdr);
2779 return -EIO;
2780 }
2781
2782 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2783 {
2784 __be32 *p;
2785
2786 *res = 0;
2787 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2788 return -EIO;
2789 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2790 p = xdr_inline_decode(xdr, 4);
2791 if (unlikely(!p))
2792 goto out_overflow;
2793 *res = be32_to_cpup(p);
2794 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2795 }
2796 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2797 return 0;
2798 out_overflow:
2799 print_overflow_msg(__func__, xdr);
2800 return -EIO;
2801 }
2802
2803 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2804 {
2805 __be32 *p;
2806 int ret = 0;
2807
2808 fsid->major = 0;
2809 fsid->minor = 0;
2810 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2811 return -EIO;
2812 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2813 p = xdr_inline_decode(xdr, 16);
2814 if (unlikely(!p))
2815 goto out_overflow;
2816 p = xdr_decode_hyper(p, &fsid->major);
2817 xdr_decode_hyper(p, &fsid->minor);
2818 bitmap[0] &= ~FATTR4_WORD0_FSID;
2819 ret = NFS_ATTR_FATTR_FSID;
2820 }
2821 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2822 (unsigned long long)fsid->major,
2823 (unsigned long long)fsid->minor);
2824 return ret;
2825 out_overflow:
2826 print_overflow_msg(__func__, xdr);
2827 return -EIO;
2828 }
2829
2830 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2831 {
2832 __be32 *p;
2833
2834 *res = 60;
2835 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2836 return -EIO;
2837 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2838 p = xdr_inline_decode(xdr, 4);
2839 if (unlikely(!p))
2840 goto out_overflow;
2841 *res = be32_to_cpup(p);
2842 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2843 }
2844 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2845 return 0;
2846 out_overflow:
2847 print_overflow_msg(__func__, xdr);
2848 return -EIO;
2849 }
2850
2851 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2852 {
2853 __be32 *p;
2854
2855 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2856 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2857 return -EIO;
2858 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2859 p = xdr_inline_decode(xdr, 4);
2860 if (unlikely(!p))
2861 goto out_overflow;
2862 *res = be32_to_cpup(p);
2863 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2864 }
2865 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2866 return 0;
2867 out_overflow:
2868 print_overflow_msg(__func__, xdr);
2869 return -EIO;
2870 }
2871
2872 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2873 {
2874 __be32 *p;
2875 int ret = 0;
2876
2877 *fileid = 0;
2878 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2879 return -EIO;
2880 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2881 p = xdr_inline_decode(xdr, 8);
2882 if (unlikely(!p))
2883 goto out_overflow;
2884 xdr_decode_hyper(p, fileid);
2885 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2886 ret = NFS_ATTR_FATTR_FILEID;
2887 }
2888 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2889 return ret;
2890 out_overflow:
2891 print_overflow_msg(__func__, xdr);
2892 return -EIO;
2893 }
2894
2895 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2896 {
2897 __be32 *p;
2898 int ret = 0;
2899
2900 *fileid = 0;
2901 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2902 return -EIO;
2903 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2904 p = xdr_inline_decode(xdr, 8);
2905 if (unlikely(!p))
2906 goto out_overflow;
2907 xdr_decode_hyper(p, fileid);
2908 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2909 ret = NFS_ATTR_FATTR_FILEID;
2910 }
2911 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2912 return ret;
2913 out_overflow:
2914 print_overflow_msg(__func__, xdr);
2915 return -EIO;
2916 }
2917
2918 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2919 {
2920 __be32 *p;
2921 int status = 0;
2922
2923 *res = 0;
2924 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2925 return -EIO;
2926 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2927 p = xdr_inline_decode(xdr, 8);
2928 if (unlikely(!p))
2929 goto out_overflow;
2930 xdr_decode_hyper(p, res);
2931 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2932 }
2933 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2934 return status;
2935 out_overflow:
2936 print_overflow_msg(__func__, xdr);
2937 return -EIO;
2938 }
2939
2940 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2941 {
2942 __be32 *p;
2943 int status = 0;
2944
2945 *res = 0;
2946 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2947 return -EIO;
2948 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2949 p = xdr_inline_decode(xdr, 8);
2950 if (unlikely(!p))
2951 goto out_overflow;
2952 xdr_decode_hyper(p, res);
2953 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2954 }
2955 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2956 return status;
2957 out_overflow:
2958 print_overflow_msg(__func__, xdr);
2959 return -EIO;
2960 }
2961
2962 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2963 {
2964 __be32 *p;
2965 int status = 0;
2966
2967 *res = 0;
2968 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2969 return -EIO;
2970 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2971 p = xdr_inline_decode(xdr, 8);
2972 if (unlikely(!p))
2973 goto out_overflow;
2974 xdr_decode_hyper(p, res);
2975 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2976 }
2977 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2978 return status;
2979 out_overflow:
2980 print_overflow_msg(__func__, xdr);
2981 return -EIO;
2982 }
2983
2984 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2985 {
2986 u32 n;
2987 __be32 *p;
2988 int status = 0;
2989
2990 p = xdr_inline_decode(xdr, 4);
2991 if (unlikely(!p))
2992 goto out_overflow;
2993 n = be32_to_cpup(p);
2994 if (n == 0)
2995 goto root_path;
2996 dprintk("path ");
2997 path->ncomponents = 0;
2998 while (path->ncomponents < n) {
2999 struct nfs4_string *component = &path->components[path->ncomponents];
3000 status = decode_opaque_inline(xdr, &component->len, &component->data);
3001 if (unlikely(status != 0))
3002 goto out_eio;
3003 if (path->ncomponents != n)
3004 dprintk("/");
3005 dprintk("%s", component->data);
3006 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3007 path->ncomponents++;
3008 else {
3009 dprintk("cannot parse %d components in path\n", n);
3010 goto out_eio;
3011 }
3012 }
3013 out:
3014 dprintk("\n");
3015 return status;
3016 root_path:
3017 /* a root pathname is sent as a zero component4 */
3018 path->ncomponents = 1;
3019 path->components[0].len=0;
3020 path->components[0].data=NULL;
3021 dprintk("path /\n");
3022 goto out;
3023 out_eio:
3024 dprintk(" status %d", status);
3025 status = -EIO;
3026 goto out;
3027 out_overflow:
3028 print_overflow_msg(__func__, xdr);
3029 return -EIO;
3030 }
3031
3032 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3033 {
3034 int n;
3035 __be32 *p;
3036 int status = -EIO;
3037
3038 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3039 goto out;
3040 status = 0;
3041 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3042 goto out;
3043 dprintk("%s: fsroot ", __func__);
3044 status = decode_pathname(xdr, &res->fs_path);
3045 if (unlikely(status != 0))
3046 goto out;
3047 p = xdr_inline_decode(xdr, 4);
3048 if (unlikely(!p))
3049 goto out_overflow;
3050 n = be32_to_cpup(p);
3051 if (n <= 0)
3052 goto out_eio;
3053 res->nlocations = 0;
3054 while (res->nlocations < n) {
3055 u32 m;
3056 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3057
3058 p = xdr_inline_decode(xdr, 4);
3059 if (unlikely(!p))
3060 goto out_overflow;
3061 m = be32_to_cpup(p);
3062
3063 loc->nservers = 0;
3064 dprintk("%s: servers ", __func__);
3065 while (loc->nservers < m) {
3066 struct nfs4_string *server = &loc->servers[loc->nservers];
3067 status = decode_opaque_inline(xdr, &server->len, &server->data);
3068 if (unlikely(status != 0))
3069 goto out_eio;
3070 dprintk("%s ", server->data);
3071 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3072 loc->nservers++;
3073 else {
3074 unsigned int i;
3075 dprintk("%s: using first %u of %u servers "
3076 "returned for location %u\n",
3077 __func__,
3078 NFS4_FS_LOCATION_MAXSERVERS,
3079 m, res->nlocations);
3080 for (i = loc->nservers; i < m; i++) {
3081 unsigned int len;
3082 char *data;
3083 status = decode_opaque_inline(xdr, &len, &data);
3084 if (unlikely(status != 0))
3085 goto out_eio;
3086 }
3087 }
3088 }
3089 status = decode_pathname(xdr, &loc->rootpath);
3090 if (unlikely(status != 0))
3091 goto out_eio;
3092 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3093 res->nlocations++;
3094 }
3095 if (res->nlocations != 0)
3096 status = NFS_ATTR_FATTR_V4_REFERRAL;
3097 out:
3098 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3099 return status;
3100 out_overflow:
3101 print_overflow_msg(__func__, xdr);
3102 out_eio:
3103 status = -EIO;
3104 goto out;
3105 }
3106
3107 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3108 {
3109 __be32 *p;
3110 int status = 0;
3111
3112 *res = 0;
3113 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3114 return -EIO;
3115 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3116 p = xdr_inline_decode(xdr, 8);
3117 if (unlikely(!p))
3118 goto out_overflow;
3119 xdr_decode_hyper(p, res);
3120 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3121 }
3122 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3123 return status;
3124 out_overflow:
3125 print_overflow_msg(__func__, xdr);
3126 return -EIO;
3127 }
3128
3129 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3130 {
3131 __be32 *p;
3132 int status = 0;
3133
3134 *maxlink = 1;
3135 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3136 return -EIO;
3137 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3138 p = xdr_inline_decode(xdr, 4);
3139 if (unlikely(!p))
3140 goto out_overflow;
3141 *maxlink = be32_to_cpup(p);
3142 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3143 }
3144 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3145 return status;
3146 out_overflow:
3147 print_overflow_msg(__func__, xdr);
3148 return -EIO;
3149 }
3150
3151 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3152 {
3153 __be32 *p;
3154 int status = 0;
3155
3156 *maxname = 1024;
3157 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3158 return -EIO;
3159 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3160 p = xdr_inline_decode(xdr, 4);
3161 if (unlikely(!p))
3162 goto out_overflow;
3163 *maxname = be32_to_cpup(p);
3164 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3165 }
3166 dprintk("%s: maxname=%u\n", __func__, *maxname);
3167 return status;
3168 out_overflow:
3169 print_overflow_msg(__func__, xdr);
3170 return -EIO;
3171 }
3172
3173 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3174 {
3175 __be32 *p;
3176 int status = 0;
3177
3178 *res = 1024;
3179 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3180 return -EIO;
3181 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3182 uint64_t maxread;
3183 p = xdr_inline_decode(xdr, 8);
3184 if (unlikely(!p))
3185 goto out_overflow;
3186 xdr_decode_hyper(p, &maxread);
3187 if (maxread > 0x7FFFFFFF)
3188 maxread = 0x7FFFFFFF;
3189 *res = (uint32_t)maxread;
3190 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3191 }
3192 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3193 return status;
3194 out_overflow:
3195 print_overflow_msg(__func__, xdr);
3196 return -EIO;
3197 }
3198
3199 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3200 {
3201 __be32 *p;
3202 int status = 0;
3203
3204 *res = 1024;
3205 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3206 return -EIO;
3207 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3208 uint64_t maxwrite;
3209 p = xdr_inline_decode(xdr, 8);
3210 if (unlikely(!p))
3211 goto out_overflow;
3212 xdr_decode_hyper(p, &maxwrite);
3213 if (maxwrite > 0x7FFFFFFF)
3214 maxwrite = 0x7FFFFFFF;
3215 *res = (uint32_t)maxwrite;
3216 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3217 }
3218 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3219 return status;
3220 out_overflow:
3221 print_overflow_msg(__func__, xdr);
3222 return -EIO;
3223 }
3224
3225 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3226 {
3227 uint32_t tmp;
3228 __be32 *p;
3229 int ret = 0;
3230
3231 *mode = 0;
3232 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3233 return -EIO;
3234 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3235 p = xdr_inline_decode(xdr, 4);
3236 if (unlikely(!p))
3237 goto out_overflow;
3238 tmp = be32_to_cpup(p);
3239 *mode = tmp & ~S_IFMT;
3240 bitmap[1] &= ~FATTR4_WORD1_MODE;
3241 ret = NFS_ATTR_FATTR_MODE;
3242 }
3243 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3244 return ret;
3245 out_overflow:
3246 print_overflow_msg(__func__, xdr);
3247 return -EIO;
3248 }
3249
3250 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3251 {
3252 __be32 *p;
3253 int ret = 0;
3254
3255 *nlink = 1;
3256 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3257 return -EIO;
3258 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3259 p = xdr_inline_decode(xdr, 4);
3260 if (unlikely(!p))
3261 goto out_overflow;
3262 *nlink = be32_to_cpup(p);
3263 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3264 ret = NFS_ATTR_FATTR_NLINK;
3265 }
3266 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3267 return ret;
3268 out_overflow:
3269 print_overflow_msg(__func__, xdr);
3270 return -EIO;
3271 }
3272
3273 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3274 struct nfs_client *clp, uint32_t *uid, int may_sleep)
3275 {
3276 uint32_t len;
3277 __be32 *p;
3278 int ret = 0;
3279
3280 *uid = -2;
3281 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3282 return -EIO;
3283 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3284 p = xdr_inline_decode(xdr, 4);
3285 if (unlikely(!p))
3286 goto out_overflow;
3287 len = be32_to_cpup(p);
3288 p = xdr_inline_decode(xdr, len);
3289 if (unlikely(!p))
3290 goto out_overflow;
3291 if (!may_sleep) {
3292 /* do nothing */
3293 } else if (len < XDR_MAX_NETOBJ) {
3294 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3295 ret = NFS_ATTR_FATTR_OWNER;
3296 else
3297 dprintk("%s: nfs_map_name_to_uid failed!\n",
3298 __func__);
3299 } else
3300 dprintk("%s: name too long (%u)!\n",
3301 __func__, len);
3302 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3303 }
3304 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3305 return ret;
3306 out_overflow:
3307 print_overflow_msg(__func__, xdr);
3308 return -EIO;
3309 }
3310
3311 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3312 struct nfs_client *clp, uint32_t *gid, int may_sleep)
3313 {
3314 uint32_t len;
3315 __be32 *p;
3316 int ret = 0;
3317
3318 *gid = -2;
3319 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3320 return -EIO;
3321 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3322 p = xdr_inline_decode(xdr, 4);
3323 if (unlikely(!p))
3324 goto out_overflow;
3325 len = be32_to_cpup(p);
3326 p = xdr_inline_decode(xdr, len);
3327 if (unlikely(!p))
3328 goto out_overflow;
3329 if (!may_sleep) {
3330 /* do nothing */
3331 } else if (len < XDR_MAX_NETOBJ) {
3332 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3333 ret = NFS_ATTR_FATTR_GROUP;
3334 else
3335 dprintk("%s: nfs_map_group_to_gid failed!\n",
3336 __func__);
3337 } else
3338 dprintk("%s: name too long (%u)!\n",
3339 __func__, len);
3340 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3341 }
3342 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3343 return ret;
3344 out_overflow:
3345 print_overflow_msg(__func__, xdr);
3346 return -EIO;
3347 }
3348
3349 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3350 {
3351 uint32_t major = 0, minor = 0;
3352 __be32 *p;
3353 int ret = 0;
3354
3355 *rdev = MKDEV(0,0);
3356 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3357 return -EIO;
3358 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3359 dev_t tmp;
3360
3361 p = xdr_inline_decode(xdr, 8);
3362 if (unlikely(!p))
3363 goto out_overflow;
3364 major = be32_to_cpup(p++);
3365 minor = be32_to_cpup(p);
3366 tmp = MKDEV(major, minor);
3367 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3368 *rdev = tmp;
3369 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3370 ret = NFS_ATTR_FATTR_RDEV;
3371 }
3372 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3373 return ret;
3374 out_overflow:
3375 print_overflow_msg(__func__, xdr);
3376 return -EIO;
3377 }
3378
3379 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3380 {
3381 __be32 *p;
3382 int status = 0;
3383
3384 *res = 0;
3385 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3386 return -EIO;
3387 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3388 p = xdr_inline_decode(xdr, 8);
3389 if (unlikely(!p))
3390 goto out_overflow;
3391 xdr_decode_hyper(p, res);
3392 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3393 }
3394 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3395 return status;
3396 out_overflow:
3397 print_overflow_msg(__func__, xdr);
3398 return -EIO;
3399 }
3400
3401 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3402 {
3403 __be32 *p;
3404 int status = 0;
3405
3406 *res = 0;
3407 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3408 return -EIO;
3409 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3410 p = xdr_inline_decode(xdr, 8);
3411 if (unlikely(!p))
3412 goto out_overflow;
3413 xdr_decode_hyper(p, res);
3414 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3415 }
3416 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3417 return status;
3418 out_overflow:
3419 print_overflow_msg(__func__, xdr);
3420 return -EIO;
3421 }
3422
3423 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3424 {
3425 __be32 *p;
3426 int status = 0;
3427
3428 *res = 0;
3429 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3430 return -EIO;
3431 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3432 p = xdr_inline_decode(xdr, 8);
3433 if (unlikely(!p))
3434 goto out_overflow;
3435 xdr_decode_hyper(p, res);
3436 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3437 }
3438 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3439 return status;
3440 out_overflow:
3441 print_overflow_msg(__func__, xdr);
3442 return -EIO;
3443 }
3444
3445 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3446 {
3447 __be32 *p;
3448 int ret = 0;
3449
3450 *used = 0;
3451 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3452 return -EIO;
3453 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3454 p = xdr_inline_decode(xdr, 8);
3455 if (unlikely(!p))
3456 goto out_overflow;
3457 xdr_decode_hyper(p, used);
3458 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3459 ret = NFS_ATTR_FATTR_SPACE_USED;
3460 }
3461 dprintk("%s: space used=%Lu\n", __func__,
3462 (unsigned long long)*used);
3463 return ret;
3464 out_overflow:
3465 print_overflow_msg(__func__, xdr);
3466 return -EIO;
3467 }
3468
3469 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3470 {
3471 __be32 *p;
3472 uint64_t sec;
3473 uint32_t nsec;
3474
3475 p = xdr_inline_decode(xdr, 12);
3476 if (unlikely(!p))
3477 goto out_overflow;
3478 p = xdr_decode_hyper(p, &sec);
3479 nsec = be32_to_cpup(p);
3480 time->tv_sec = (time_t)sec;
3481 time->tv_nsec = (long)nsec;
3482 return 0;
3483 out_overflow:
3484 print_overflow_msg(__func__, xdr);
3485 return -EIO;
3486 }
3487
3488 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3489 {
3490 int status = 0;
3491
3492 time->tv_sec = 0;
3493 time->tv_nsec = 0;
3494 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3495 return -EIO;
3496 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3497 status = decode_attr_time(xdr, time);
3498 if (status == 0)
3499 status = NFS_ATTR_FATTR_ATIME;
3500 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3501 }
3502 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3503 return status;
3504 }
3505
3506 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3507 {
3508 int status = 0;
3509
3510 time->tv_sec = 0;
3511 time->tv_nsec = 0;
3512 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3513 return -EIO;
3514 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3515 status = decode_attr_time(xdr, time);
3516 if (status == 0)
3517 status = NFS_ATTR_FATTR_CTIME;
3518 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3519 }
3520 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3521 return status;
3522 }
3523
3524 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3525 {
3526 int status = 0;
3527
3528 time->tv_sec = 0;
3529 time->tv_nsec = 0;
3530 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3531 return -EIO;
3532 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3533 status = decode_attr_time(xdr, time);
3534 if (status == 0)
3535 status = NFS_ATTR_FATTR_MTIME;
3536 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3537 }
3538 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3539 return status;
3540 }
3541
3542 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3543 {
3544 unsigned int attrwords = XDR_QUADLEN(attrlen);
3545 unsigned int nwords = xdr->p - savep;
3546
3547 if (unlikely(attrwords != nwords)) {
3548 dprintk("%s: server returned incorrect attribute length: "
3549 "%u %c %u\n",
3550 __func__,
3551 attrwords << 2,
3552 (attrwords < nwords) ? '<' : '>',
3553 nwords << 2);
3554 return -EIO;
3555 }
3556 return 0;
3557 }
3558
3559 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3560 {
3561 __be32 *p;
3562
3563 p = xdr_inline_decode(xdr, 20);
3564 if (unlikely(!p))
3565 goto out_overflow;
3566 cinfo->atomic = be32_to_cpup(p++);
3567 p = xdr_decode_hyper(p, &cinfo->before);
3568 xdr_decode_hyper(p, &cinfo->after);
3569 return 0;
3570 out_overflow:
3571 print_overflow_msg(__func__, xdr);
3572 return -EIO;
3573 }
3574
3575 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3576 {
3577 __be32 *p;
3578 uint32_t supp, acc;
3579 int status;
3580
3581 status = decode_op_hdr(xdr, OP_ACCESS);
3582 if (status)
3583 return status;
3584 p = xdr_inline_decode(xdr, 8);
3585 if (unlikely(!p))
3586 goto out_overflow;
3587 supp = be32_to_cpup(p++);
3588 acc = be32_to_cpup(p);
3589 access->supported = supp;
3590 access->access = acc;
3591 return 0;
3592 out_overflow:
3593 print_overflow_msg(__func__, xdr);
3594 return -EIO;
3595 }
3596
3597 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
3598 {
3599 __be32 *p;
3600
3601 p = xdr_inline_decode(xdr, len);
3602 if (likely(p)) {
3603 memcpy(buf, p, len);
3604 return 0;
3605 }
3606 print_overflow_msg(__func__, xdr);
3607 return -EIO;
3608 }
3609
3610 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
3611 {
3612 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
3613 }
3614
3615 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3616 {
3617 int status;
3618
3619 status = decode_op_hdr(xdr, OP_CLOSE);
3620 if (status != -EIO)
3621 nfs_increment_open_seqid(status, res->seqid);
3622 if (!status)
3623 status = decode_stateid(xdr, &res->stateid);
3624 return status;
3625 }
3626
3627 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
3628 {
3629 return decode_opaque_fixed(xdr, verifier, 8);
3630 }
3631
3632 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3633 {
3634 int status;
3635
3636 status = decode_op_hdr(xdr, OP_COMMIT);
3637 if (!status)
3638 status = decode_verifier(xdr, res->verf->verifier);
3639 return status;
3640 }
3641
3642 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3643 {
3644 __be32 *p;
3645 uint32_t bmlen;
3646 int status;
3647
3648 status = decode_op_hdr(xdr, OP_CREATE);
3649 if (status)
3650 return status;
3651 if ((status = decode_change_info(xdr, cinfo)))
3652 return status;
3653 p = xdr_inline_decode(xdr, 4);
3654 if (unlikely(!p))
3655 goto out_overflow;
3656 bmlen = be32_to_cpup(p);
3657 p = xdr_inline_decode(xdr, bmlen << 2);
3658 if (likely(p))
3659 return 0;
3660 out_overflow:
3661 print_overflow_msg(__func__, xdr);
3662 return -EIO;
3663 }
3664
3665 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3666 {
3667 __be32 *savep;
3668 uint32_t attrlen, bitmap[2] = {0};
3669 int status;
3670
3671 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3672 goto xdr_error;
3673 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3674 goto xdr_error;
3675 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3676 goto xdr_error;
3677 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3678 goto xdr_error;
3679 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3680 goto xdr_error;
3681 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3682 goto xdr_error;
3683 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3684 goto xdr_error;
3685 status = verify_attr_len(xdr, savep, attrlen);
3686 xdr_error:
3687 dprintk("%s: xdr returned %d!\n", __func__, -status);
3688 return status;
3689 }
3690
3691 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3692 {
3693 __be32 *savep;
3694 uint32_t attrlen, bitmap[2] = {0};
3695 int status;
3696
3697 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3698 goto xdr_error;
3699 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3700 goto xdr_error;
3701 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3702 goto xdr_error;
3703
3704 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3705 goto xdr_error;
3706 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3707 goto xdr_error;
3708 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3709 goto xdr_error;
3710 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3711 goto xdr_error;
3712 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3713 goto xdr_error;
3714 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3715 goto xdr_error;
3716
3717 status = verify_attr_len(xdr, savep, attrlen);
3718 xdr_error:
3719 dprintk("%s: xdr returned %d!\n", __func__, -status);
3720 return status;
3721 }
3722
3723 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3724 {
3725 __be32 *savep;
3726 uint32_t attrlen, bitmap[2] = {0};
3727 int status;
3728
3729 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3730 goto xdr_error;
3731 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3732 goto xdr_error;
3733 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3734 goto xdr_error;
3735
3736 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3737 goto xdr_error;
3738 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3739 goto xdr_error;
3740
3741 status = verify_attr_len(xdr, savep, attrlen);
3742 xdr_error:
3743 dprintk("%s: xdr returned %d!\n", __func__, -status);
3744 return status;
3745 }
3746
3747 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
3748 const struct nfs_server *server, int may_sleep)
3749 {
3750 __be32 *savep;
3751 uint32_t attrlen,
3752 bitmap[2] = {0},
3753 type;
3754 int status;
3755 umode_t fmode = 0;
3756 uint64_t fileid;
3757
3758 status = decode_op_hdr(xdr, OP_GETATTR);
3759 if (status < 0)
3760 goto xdr_error;
3761
3762 status = decode_attr_bitmap(xdr, bitmap);
3763 if (status < 0)
3764 goto xdr_error;
3765
3766 status = decode_attr_length(xdr, &attrlen, &savep);
3767 if (status < 0)
3768 goto xdr_error;
3769
3770
3771 status = decode_attr_type(xdr, bitmap, &type);
3772 if (status < 0)
3773 goto xdr_error;
3774 fattr->mode = 0;
3775 if (status != 0) {
3776 fattr->mode |= nfs_type2fmt[type];
3777 fattr->valid |= status;
3778 }
3779
3780 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3781 if (status < 0)
3782 goto xdr_error;
3783 fattr->valid |= status;
3784
3785 status = decode_attr_size(xdr, bitmap, &fattr->size);
3786 if (status < 0)
3787 goto xdr_error;
3788 fattr->valid |= status;
3789
3790 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3791 if (status < 0)
3792 goto xdr_error;
3793 fattr->valid |= status;
3794
3795 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3796 if (status < 0)
3797 goto xdr_error;
3798 fattr->valid |= status;
3799
3800 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3801 struct nfs4_fs_locations,
3802 fattr));
3803 if (status < 0)
3804 goto xdr_error;
3805 fattr->valid |= status;
3806
3807 status = decode_attr_mode(xdr, bitmap, &fmode);
3808 if (status < 0)
3809 goto xdr_error;
3810 if (status != 0) {
3811 fattr->mode |= fmode;
3812 fattr->valid |= status;
3813 }
3814
3815 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3816 if (status < 0)
3817 goto xdr_error;
3818 fattr->valid |= status;
3819
3820 status = decode_attr_owner(xdr, bitmap, server->nfs_client,
3821 &fattr->uid, may_sleep);
3822 if (status < 0)
3823 goto xdr_error;
3824 fattr->valid |= status;
3825
3826 status = decode_attr_group(xdr, bitmap, server->nfs_client,
3827 &fattr->gid, may_sleep);
3828 if (status < 0)
3829 goto xdr_error;
3830 fattr->valid |= status;
3831
3832 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3833 if (status < 0)
3834 goto xdr_error;
3835 fattr->valid |= status;
3836
3837 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3838 if (status < 0)
3839 goto xdr_error;
3840 fattr->valid |= status;
3841
3842 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3843 if (status < 0)
3844 goto xdr_error;
3845 fattr->valid |= status;
3846
3847 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3848 if (status < 0)
3849 goto xdr_error;
3850 fattr->valid |= status;
3851
3852 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3853 if (status < 0)
3854 goto xdr_error;
3855 fattr->valid |= status;
3856
3857 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3858 if (status < 0)
3859 goto xdr_error;
3860 if (status != 0 && !(fattr->valid & status)) {
3861 fattr->fileid = fileid;
3862 fattr->valid |= status;
3863 }
3864
3865 status = verify_attr_len(xdr, savep, attrlen);
3866 xdr_error:
3867 dprintk("%s: xdr returned %d\n", __func__, -status);
3868 return status;
3869 }
3870
3871
3872 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3873 {
3874 __be32 *savep;
3875 uint32_t attrlen, bitmap[2];
3876 int status;
3877
3878 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3879 goto xdr_error;
3880 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3881 goto xdr_error;
3882 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3883 goto xdr_error;
3884
3885 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3886
3887 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3888 goto xdr_error;
3889 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3890 goto xdr_error;
3891 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3892 goto xdr_error;
3893 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3894 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3895 goto xdr_error;
3896 fsinfo->wtpref = fsinfo->wtmax;
3897
3898 status = verify_attr_len(xdr, savep, attrlen);
3899 xdr_error:
3900 dprintk("%s: xdr returned %d!\n", __func__, -status);
3901 return status;
3902 }
3903
3904 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3905 {
3906 __be32 *p;
3907 uint32_t len;
3908 int status;
3909
3910 /* Zero handle first to allow comparisons */
3911 memset(fh, 0, sizeof(*fh));
3912
3913 status = decode_op_hdr(xdr, OP_GETFH);
3914 if (status)
3915 return status;
3916
3917 p = xdr_inline_decode(xdr, 4);
3918 if (unlikely(!p))
3919 goto out_overflow;
3920 len = be32_to_cpup(p);
3921 if (len > NFS4_FHSIZE)
3922 return -EIO;
3923 fh->size = len;
3924 p = xdr_inline_decode(xdr, len);
3925 if (unlikely(!p))
3926 goto out_overflow;
3927 memcpy(fh->data, p, len);
3928 return 0;
3929 out_overflow:
3930 print_overflow_msg(__func__, xdr);
3931 return -EIO;
3932 }
3933
3934 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3935 {
3936 int status;
3937
3938 status = decode_op_hdr(xdr, OP_LINK);
3939 if (status)
3940 return status;
3941 return decode_change_info(xdr, cinfo);
3942 }
3943
3944 /*
3945 * We create the owner, so we know a proper owner.id length is 4.
3946 */
3947 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3948 {
3949 uint64_t offset, length, clientid;
3950 __be32 *p;
3951 uint32_t namelen, type;
3952
3953 p = xdr_inline_decode(xdr, 32);
3954 if (unlikely(!p))
3955 goto out_overflow;
3956 p = xdr_decode_hyper(p, &offset);
3957 p = xdr_decode_hyper(p, &length);
3958 type = be32_to_cpup(p++);
3959 if (fl != NULL) {
3960 fl->fl_start = (loff_t)offset;
3961 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3962 if (length == ~(uint64_t)0)
3963 fl->fl_end = OFFSET_MAX;
3964 fl->fl_type = F_WRLCK;
3965 if (type & 1)
3966 fl->fl_type = F_RDLCK;
3967 fl->fl_pid = 0;
3968 }
3969 p = xdr_decode_hyper(p, &clientid);
3970 namelen = be32_to_cpup(p);
3971 p = xdr_inline_decode(xdr, namelen);
3972 if (likely(p))
3973 return -NFS4ERR_DENIED;
3974 out_overflow:
3975 print_overflow_msg(__func__, xdr);
3976 return -EIO;
3977 }
3978
3979 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3980 {
3981 int status;
3982
3983 status = decode_op_hdr(xdr, OP_LOCK);
3984 if (status == -EIO)
3985 goto out;
3986 if (status == 0) {
3987 status = decode_stateid(xdr, &res->stateid);
3988 if (unlikely(status))
3989 goto out;
3990 } else if (status == -NFS4ERR_DENIED)
3991 status = decode_lock_denied(xdr, NULL);
3992 if (res->open_seqid != NULL)
3993 nfs_increment_open_seqid(status, res->open_seqid);
3994 nfs_increment_lock_seqid(status, res->lock_seqid);
3995 out:
3996 return status;
3997 }
3998
3999 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4000 {
4001 int status;
4002 status = decode_op_hdr(xdr, OP_LOCKT);
4003 if (status == -NFS4ERR_DENIED)
4004 return decode_lock_denied(xdr, res->denied);
4005 return status;
4006 }
4007
4008 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4009 {
4010 int status;
4011
4012 status = decode_op_hdr(xdr, OP_LOCKU);
4013 if (status != -EIO)
4014 nfs_increment_lock_seqid(status, res->seqid);
4015 if (status == 0)
4016 status = decode_stateid(xdr, &res->stateid);
4017 return status;
4018 }
4019
4020 static int decode_release_lockowner(struct xdr_stream *xdr)
4021 {
4022 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4023 }
4024
4025 static int decode_lookup(struct xdr_stream *xdr)
4026 {
4027 return decode_op_hdr(xdr, OP_LOOKUP);
4028 }
4029
4030 /* This is too sick! */
4031 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4032 {
4033 __be32 *p;
4034 uint32_t limit_type, nblocks, blocksize;
4035
4036 p = xdr_inline_decode(xdr, 12);
4037 if (unlikely(!p))
4038 goto out_overflow;
4039 limit_type = be32_to_cpup(p++);
4040 switch (limit_type) {
4041 case 1:
4042 xdr_decode_hyper(p, maxsize);
4043 break;
4044 case 2:
4045 nblocks = be32_to_cpup(p++);
4046 blocksize = be32_to_cpup(p);
4047 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4048 }
4049 return 0;
4050 out_overflow:
4051 print_overflow_msg(__func__, xdr);
4052 return -EIO;
4053 }
4054
4055 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4056 {
4057 __be32 *p;
4058 uint32_t delegation_type;
4059 int status;
4060
4061 p = xdr_inline_decode(xdr, 4);
4062 if (unlikely(!p))
4063 goto out_overflow;
4064 delegation_type = be32_to_cpup(p);
4065 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4066 res->delegation_type = 0;
4067 return 0;
4068 }
4069 status = decode_stateid(xdr, &res->delegation);
4070 if (unlikely(status))
4071 return status;
4072 p = xdr_inline_decode(xdr, 4);
4073 if (unlikely(!p))
4074 goto out_overflow;
4075 res->do_recall = be32_to_cpup(p);
4076
4077 switch (delegation_type) {
4078 case NFS4_OPEN_DELEGATE_READ:
4079 res->delegation_type = FMODE_READ;
4080 break;
4081 case NFS4_OPEN_DELEGATE_WRITE:
4082 res->delegation_type = FMODE_WRITE|FMODE_READ;
4083 if (decode_space_limit(xdr, &res->maxsize) < 0)
4084 return -EIO;
4085 }
4086 return decode_ace(xdr, NULL, res->server->nfs_client);
4087 out_overflow:
4088 print_overflow_msg(__func__, xdr);
4089 return -EIO;
4090 }
4091
4092 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4093 {
4094 __be32 *p;
4095 uint32_t savewords, bmlen, i;
4096 int status;
4097
4098 status = decode_op_hdr(xdr, OP_OPEN);
4099 if (status != -EIO)
4100 nfs_increment_open_seqid(status, res->seqid);
4101 if (!status)
4102 status = decode_stateid(xdr, &res->stateid);
4103 if (unlikely(status))
4104 return status;
4105
4106 decode_change_info(xdr, &res->cinfo);
4107
4108 p = xdr_inline_decode(xdr, 8);
4109 if (unlikely(!p))
4110 goto out_overflow;
4111 res->rflags = be32_to_cpup(p++);
4112 bmlen = be32_to_cpup(p);
4113 if (bmlen > 10)
4114 goto xdr_error;
4115
4116 p = xdr_inline_decode(xdr, bmlen << 2);
4117 if (unlikely(!p))
4118 goto out_overflow;
4119 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4120 for (i = 0; i < savewords; ++i)
4121 res->attrset[i] = be32_to_cpup(p++);
4122 for (; i < NFS4_BITMAP_SIZE; i++)
4123 res->attrset[i] = 0;
4124
4125 return decode_delegation(xdr, res);
4126 xdr_error:
4127 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4128 return -EIO;
4129 out_overflow:
4130 print_overflow_msg(__func__, xdr);
4131 return -EIO;
4132 }
4133
4134 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4135 {
4136 int status;
4137
4138 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4139 if (status != -EIO)
4140 nfs_increment_open_seqid(status, res->seqid);
4141 if (!status)
4142 status = decode_stateid(xdr, &res->stateid);
4143 return status;
4144 }
4145
4146 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4147 {
4148 int status;
4149
4150 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4151 if (status != -EIO)
4152 nfs_increment_open_seqid(status, res->seqid);
4153 if (!status)
4154 status = decode_stateid(xdr, &res->stateid);
4155 return status;
4156 }
4157
4158 static int decode_putfh(struct xdr_stream *xdr)
4159 {
4160 return decode_op_hdr(xdr, OP_PUTFH);
4161 }
4162
4163 static int decode_putrootfh(struct xdr_stream *xdr)
4164 {
4165 return decode_op_hdr(xdr, OP_PUTROOTFH);
4166 }
4167
4168 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4169 {
4170 struct kvec *iov = req->rq_rcv_buf.head;
4171 __be32 *p;
4172 uint32_t count, eof, recvd, hdrlen;
4173 int status;
4174
4175 status = decode_op_hdr(xdr, OP_READ);
4176 if (status)
4177 return status;
4178 p = xdr_inline_decode(xdr, 8);
4179 if (unlikely(!p))
4180 goto out_overflow;
4181 eof = be32_to_cpup(p++);
4182 count = be32_to_cpup(p);
4183 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
4184 recvd = req->rq_rcv_buf.len - hdrlen;
4185 if (count > recvd) {
4186 dprintk("NFS: server cheating in read reply: "
4187 "count %u > recvd %u\n", count, recvd);
4188 count = recvd;
4189 eof = 0;
4190 }
4191 xdr_read_pages(xdr, count);
4192 res->eof = eof;
4193 res->count = count;
4194 return 0;
4195 out_overflow:
4196 print_overflow_msg(__func__, xdr);
4197 return -EIO;
4198 }
4199
4200 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4201 {
4202 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4203 struct page *page = *rcvbuf->pages;
4204 struct kvec *iov = rcvbuf->head;
4205 size_t hdrlen;
4206 u32 recvd, pglen = rcvbuf->page_len;
4207 __be32 *end, *entry, *p, *kaddr;
4208 unsigned int nr = 0;
4209 int status;
4210
4211 status = decode_op_hdr(xdr, OP_READDIR);
4212 if (!status)
4213 status = decode_verifier(xdr, readdir->verifier.data);
4214 if (unlikely(status))
4215 return status;
4216 dprintk("%s: verifier = %08x:%08x\n",
4217 __func__,
4218 ((u32 *)readdir->verifier.data)[0],
4219 ((u32 *)readdir->verifier.data)[1]);
4220
4221
4222 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4223 recvd = rcvbuf->len - hdrlen;
4224 if (pglen > recvd)
4225 pglen = recvd;
4226 xdr_read_pages(xdr, pglen);
4227
4228 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
4229 kaddr = p = kmap_atomic(page, KM_USER0);
4230 end = p + ((pglen + readdir->pgbase) >> 2);
4231 entry = p;
4232
4233 /* Make sure the packet actually has a value_follows and EOF entry */
4234 if ((entry + 1) > end)
4235 goto short_pkt;
4236
4237 for (; *p++; nr++) {
4238 u32 len, attrlen, xlen;
4239 if (end - p < 3)
4240 goto short_pkt;
4241 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
4242 p += 2; /* cookie */
4243 len = ntohl(*p++); /* filename length */
4244 if (len > NFS4_MAXNAMLEN) {
4245 dprintk("NFS: giant filename in readdir (len 0x%x)\n",
4246 len);
4247 goto err_unmap;
4248 }
4249 xlen = XDR_QUADLEN(len);
4250 if (end - p < xlen + 1)
4251 goto short_pkt;
4252 dprintk("filename = %*s\n", len, (char *)p);
4253 p += xlen;
4254 len = ntohl(*p++); /* bitmap length */
4255 if (end - p < len + 1)
4256 goto short_pkt;
4257 p += len;
4258 attrlen = XDR_QUADLEN(ntohl(*p++));
4259 if (end - p < attrlen + 2)
4260 goto short_pkt;
4261 p += attrlen; /* attributes */
4262 entry = p;
4263 }
4264 /*
4265 * Apparently some server sends responses that are a valid size, but
4266 * contain no entries, and have value_follows==0 and EOF==0. For
4267 * those, just set the EOF marker.
4268 */
4269 if (!nr && entry[1] == 0) {
4270 dprintk("NFS: readdir reply truncated!\n");
4271 entry[1] = 1;
4272 }
4273 out:
4274 kunmap_atomic(kaddr, KM_USER0);
4275 return 0;
4276 short_pkt:
4277 /*
4278 * When we get a short packet there are 2 possibilities. We can
4279 * return an error, or fix up the response to look like a valid
4280 * response and return what we have so far. If there are no
4281 * entries and the packet was short, then return -EIO. If there
4282 * are valid entries in the response, return them and pretend that
4283 * the call was successful, but incomplete. The caller can retry the
4284 * readdir starting at the last cookie.
4285 */
4286 dprintk("%s: short packet at entry %d\n", __func__, nr);
4287 entry[0] = entry[1] = 0;
4288 if (nr)
4289 goto out;
4290 err_unmap:
4291 kunmap_atomic(kaddr, KM_USER0);
4292 return -errno_NFSERR_IO;
4293 }
4294
4295 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4296 {
4297 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4298 struct kvec *iov = rcvbuf->head;
4299 size_t hdrlen;
4300 u32 len, recvd;
4301 __be32 *p;
4302 char *kaddr;
4303 int status;
4304
4305 status = decode_op_hdr(xdr, OP_READLINK);
4306 if (status)
4307 return status;
4308
4309 /* Convert length of symlink */
4310 p = xdr_inline_decode(xdr, 4);
4311 if (unlikely(!p))
4312 goto out_overflow;
4313 len = be32_to_cpup(p);
4314 if (len >= rcvbuf->page_len || len <= 0) {
4315 dprintk("nfs: server returned giant symlink!\n");
4316 return -ENAMETOOLONG;
4317 }
4318 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4319 recvd = req->rq_rcv_buf.len - hdrlen;
4320 if (recvd < len) {
4321 dprintk("NFS: server cheating in readlink reply: "
4322 "count %u > recvd %u\n", len, recvd);
4323 return -EIO;
4324 }
4325 xdr_read_pages(xdr, len);
4326 /*
4327 * The XDR encode routine has set things up so that
4328 * the link text will be copied directly into the
4329 * buffer. We just have to do overflow-checking,
4330 * and and null-terminate the text (the VFS expects
4331 * null-termination).
4332 */
4333 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
4334 kaddr[len+rcvbuf->page_base] = '\0';
4335 kunmap_atomic(kaddr, KM_USER0);
4336 return 0;
4337 out_overflow:
4338 print_overflow_msg(__func__, xdr);
4339 return -EIO;
4340 }
4341
4342 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4343 {
4344 int status;
4345
4346 status = decode_op_hdr(xdr, OP_REMOVE);
4347 if (status)
4348 goto out;
4349 status = decode_change_info(xdr, cinfo);
4350 out:
4351 return status;
4352 }
4353
4354 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4355 struct nfs4_change_info *new_cinfo)
4356 {
4357 int status;
4358
4359 status = decode_op_hdr(xdr, OP_RENAME);
4360 if (status)
4361 goto out;
4362 if ((status = decode_change_info(xdr, old_cinfo)))
4363 goto out;
4364 status = decode_change_info(xdr, new_cinfo);
4365 out:
4366 return status;
4367 }
4368
4369 static int decode_renew(struct xdr_stream *xdr)
4370 {
4371 return decode_op_hdr(xdr, OP_RENEW);
4372 }
4373
4374 static int
4375 decode_restorefh(struct xdr_stream *xdr)
4376 {
4377 return decode_op_hdr(xdr, OP_RESTOREFH);
4378 }
4379
4380 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4381 size_t *acl_len)
4382 {
4383 __be32 *savep;
4384 uint32_t attrlen,
4385 bitmap[2] = {0};
4386 struct kvec *iov = req->rq_rcv_buf.head;
4387 int status;
4388
4389 *acl_len = 0;
4390 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4391 goto out;
4392 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4393 goto out;
4394 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4395 goto out;
4396
4397 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4398 return -EIO;
4399 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4400 size_t hdrlen;
4401 u32 recvd;
4402
4403 /* We ignore &savep and don't do consistency checks on
4404 * the attr length. Let userspace figure it out.... */
4405 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4406 recvd = req->rq_rcv_buf.len - hdrlen;
4407 if (attrlen > recvd) {
4408 dprintk("NFS: server cheating in getattr"
4409 " acl reply: attrlen %u > recvd %u\n",
4410 attrlen, recvd);
4411 return -EINVAL;
4412 }
4413 xdr_read_pages(xdr, attrlen);
4414 *acl_len = attrlen;
4415 } else
4416 status = -EOPNOTSUPP;
4417
4418 out:
4419 return status;
4420 }
4421
4422 static int
4423 decode_savefh(struct xdr_stream *xdr)
4424 {
4425 return decode_op_hdr(xdr, OP_SAVEFH);
4426 }
4427
4428 static int decode_setattr(struct xdr_stream *xdr)
4429 {
4430 __be32 *p;
4431 uint32_t bmlen;
4432 int status;
4433
4434 status = decode_op_hdr(xdr, OP_SETATTR);
4435 if (status)
4436 return status;
4437 p = xdr_inline_decode(xdr, 4);
4438 if (unlikely(!p))
4439 goto out_overflow;
4440 bmlen = be32_to_cpup(p);
4441 p = xdr_inline_decode(xdr, bmlen << 2);
4442 if (likely(p))
4443 return 0;
4444 out_overflow:
4445 print_overflow_msg(__func__, xdr);
4446 return -EIO;
4447 }
4448
4449 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
4450 {
4451 __be32 *p;
4452 uint32_t opnum;
4453 int32_t nfserr;
4454
4455 p = xdr_inline_decode(xdr, 8);
4456 if (unlikely(!p))
4457 goto out_overflow;
4458 opnum = be32_to_cpup(p++);
4459 if (opnum != OP_SETCLIENTID) {
4460 dprintk("nfs: decode_setclientid: Server returned operation"
4461 " %d\n", opnum);
4462 return -EIO;
4463 }
4464 nfserr = be32_to_cpup(p);
4465 if (nfserr == NFS_OK) {
4466 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4467 if (unlikely(!p))
4468 goto out_overflow;
4469 p = xdr_decode_hyper(p, &res->clientid);
4470 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
4471 } else if (nfserr == NFSERR_CLID_INUSE) {
4472 uint32_t len;
4473
4474 /* skip netid string */
4475 p = xdr_inline_decode(xdr, 4);
4476 if (unlikely(!p))
4477 goto out_overflow;
4478 len = be32_to_cpup(p);
4479 p = xdr_inline_decode(xdr, len);
4480 if (unlikely(!p))
4481 goto out_overflow;
4482
4483 /* skip uaddr string */
4484 p = xdr_inline_decode(xdr, 4);
4485 if (unlikely(!p))
4486 goto out_overflow;
4487 len = be32_to_cpup(p);
4488 p = xdr_inline_decode(xdr, len);
4489 if (unlikely(!p))
4490 goto out_overflow;
4491 return -NFSERR_CLID_INUSE;
4492 } else
4493 return nfs4_stat_to_errno(nfserr);
4494
4495 return 0;
4496 out_overflow:
4497 print_overflow_msg(__func__, xdr);
4498 return -EIO;
4499 }
4500
4501 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4502 {
4503 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4504 }
4505
4506 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4507 {
4508 __be32 *p;
4509 int status;
4510
4511 status = decode_op_hdr(xdr, OP_WRITE);
4512 if (status)
4513 return status;
4514
4515 p = xdr_inline_decode(xdr, 16);
4516 if (unlikely(!p))
4517 goto out_overflow;
4518 res->count = be32_to_cpup(p++);
4519 res->verf->committed = be32_to_cpup(p++);
4520 memcpy(res->verf->verifier, p, 8);
4521 return 0;
4522 out_overflow:
4523 print_overflow_msg(__func__, xdr);
4524 return -EIO;
4525 }
4526
4527 static int decode_delegreturn(struct xdr_stream *xdr)
4528 {
4529 return decode_op_hdr(xdr, OP_DELEGRETURN);
4530 }
4531
4532 #if defined(CONFIG_NFS_V4_1)
4533 static int decode_exchange_id(struct xdr_stream *xdr,
4534 struct nfs41_exchange_id_res *res)
4535 {
4536 __be32 *p;
4537 uint32_t dummy;
4538 char *dummy_str;
4539 int status;
4540 struct nfs_client *clp = res->client;
4541
4542 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4543 if (status)
4544 return status;
4545
4546 p = xdr_inline_decode(xdr, 8);
4547 if (unlikely(!p))
4548 goto out_overflow;
4549 xdr_decode_hyper(p, &clp->cl_ex_clid);
4550 p = xdr_inline_decode(xdr, 12);
4551 if (unlikely(!p))
4552 goto out_overflow;
4553 clp->cl_seqid = be32_to_cpup(p++);
4554 clp->cl_exchange_flags = be32_to_cpup(p++);
4555
4556 /* We ask for SP4_NONE */
4557 dummy = be32_to_cpup(p);
4558 if (dummy != SP4_NONE)
4559 return -EIO;
4560
4561 /* Throw away minor_id */
4562 p = xdr_inline_decode(xdr, 8);
4563 if (unlikely(!p))
4564 goto out_overflow;
4565
4566 /* Throw away Major id */
4567 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4568 if (unlikely(status))
4569 return status;
4570
4571 /* Throw away server_scope */
4572 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4573 if (unlikely(status))
4574 return status;
4575
4576 /* Throw away Implementation id array */
4577 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4578 if (unlikely(status))
4579 return status;
4580
4581 return 0;
4582 out_overflow:
4583 print_overflow_msg(__func__, xdr);
4584 return -EIO;
4585 }
4586
4587 static int decode_chan_attrs(struct xdr_stream *xdr,
4588 struct nfs4_channel_attrs *attrs)
4589 {
4590 __be32 *p;
4591 u32 nr_attrs;
4592
4593 p = xdr_inline_decode(xdr, 28);
4594 if (unlikely(!p))
4595 goto out_overflow;
4596 attrs->headerpadsz = be32_to_cpup(p++);
4597 attrs->max_rqst_sz = be32_to_cpup(p++);
4598 attrs->max_resp_sz = be32_to_cpup(p++);
4599 attrs->max_resp_sz_cached = be32_to_cpup(p++);
4600 attrs->max_ops = be32_to_cpup(p++);
4601 attrs->max_reqs = be32_to_cpup(p++);
4602 nr_attrs = be32_to_cpup(p);
4603 if (unlikely(nr_attrs > 1)) {
4604 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4605 __func__, nr_attrs);
4606 return -EINVAL;
4607 }
4608 if (nr_attrs == 1) {
4609 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
4610 if (unlikely(!p))
4611 goto out_overflow;
4612 }
4613 return 0;
4614 out_overflow:
4615 print_overflow_msg(__func__, xdr);
4616 return -EIO;
4617 }
4618
4619 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
4620 {
4621 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
4622 }
4623
4624 static int decode_create_session(struct xdr_stream *xdr,
4625 struct nfs41_create_session_res *res)
4626 {
4627 __be32 *p;
4628 int status;
4629 struct nfs_client *clp = res->client;
4630 struct nfs4_session *session = clp->cl_session;
4631
4632 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
4633 if (!status)
4634 status = decode_sessionid(xdr, &session->sess_id);
4635 if (unlikely(status))
4636 return status;
4637
4638 /* seqid, flags */
4639 p = xdr_inline_decode(xdr, 8);
4640 if (unlikely(!p))
4641 goto out_overflow;
4642 clp->cl_seqid = be32_to_cpup(p++);
4643 session->flags = be32_to_cpup(p);
4644
4645 /* Channel attributes */
4646 status = decode_chan_attrs(xdr, &session->fc_attrs);
4647 if (!status)
4648 status = decode_chan_attrs(xdr, &session->bc_attrs);
4649 return status;
4650 out_overflow:
4651 print_overflow_msg(__func__, xdr);
4652 return -EIO;
4653 }
4654
4655 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4656 {
4657 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4658 }
4659
4660 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
4661 {
4662 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
4663 }
4664 #endif /* CONFIG_NFS_V4_1 */
4665
4666 static int decode_sequence(struct xdr_stream *xdr,
4667 struct nfs4_sequence_res *res,
4668 struct rpc_rqst *rqstp)
4669 {
4670 #if defined(CONFIG_NFS_V4_1)
4671 struct nfs4_slot *slot;
4672 struct nfs4_sessionid id;
4673 u32 dummy;
4674 int status;
4675 __be32 *p;
4676
4677 if (!res->sr_session)
4678 return 0;
4679
4680 status = decode_op_hdr(xdr, OP_SEQUENCE);
4681 if (!status)
4682 status = decode_sessionid(xdr, &id);
4683 if (unlikely(status))
4684 goto out_err;
4685
4686 /*
4687 * If the server returns different values for sessionID, slotID or
4688 * sequence number, the server is looney tunes.
4689 */
4690 status = -EREMOTEIO;
4691
4692 if (memcmp(id.data, res->sr_session->sess_id.data,
4693 NFS4_MAX_SESSIONID_LEN)) {
4694 dprintk("%s Invalid session id\n", __func__);
4695 goto out_err;
4696 }
4697
4698 p = xdr_inline_decode(xdr, 20);
4699 if (unlikely(!p))
4700 goto out_overflow;
4701
4702 /* seqid */
4703 slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid];
4704 dummy = be32_to_cpup(p++);
4705 if (dummy != slot->seq_nr) {
4706 dprintk("%s Invalid sequence number\n", __func__);
4707 goto out_err;
4708 }
4709 /* slot id */
4710 dummy = be32_to_cpup(p++);
4711 if (dummy != res->sr_slotid) {
4712 dprintk("%s Invalid slot id\n", __func__);
4713 goto out_err;
4714 }
4715 /* highest slot id - currently not processed */
4716 dummy = be32_to_cpup(p++);
4717 /* target highest slot id - currently not processed */
4718 dummy = be32_to_cpup(p++);
4719 /* result flags */
4720 res->sr_status_flags = be32_to_cpup(p);
4721 status = 0;
4722 out_err:
4723 res->sr_status = status;
4724 return status;
4725 out_overflow:
4726 print_overflow_msg(__func__, xdr);
4727 status = -EIO;
4728 goto out_err;
4729 #else /* CONFIG_NFS_V4_1 */
4730 return 0;
4731 #endif /* CONFIG_NFS_V4_1 */
4732 }
4733
4734 /*
4735 * END OF "GENERIC" DECODE ROUTINES.
4736 */
4737
4738 /*
4739 * Decode OPEN_DOWNGRADE response
4740 */
4741 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4742 {
4743 struct xdr_stream xdr;
4744 struct compound_hdr hdr;
4745 int status;
4746
4747 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4748 status = decode_compound_hdr(&xdr, &hdr);
4749 if (status)
4750 goto out;
4751 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4752 if (status)
4753 goto out;
4754 status = decode_putfh(&xdr);
4755 if (status)
4756 goto out;
4757 status = decode_open_downgrade(&xdr, res);
4758 if (status != 0)
4759 goto out;
4760 decode_getfattr(&xdr, res->fattr, res->server,
4761 !RPC_IS_ASYNC(rqstp->rq_task));
4762 out:
4763 return status;
4764 }
4765
4766 /*
4767 * Decode ACCESS response
4768 */
4769 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
4770 {
4771 struct xdr_stream xdr;
4772 struct compound_hdr hdr;
4773 int status;
4774
4775 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4776 status = decode_compound_hdr(&xdr, &hdr);
4777 if (status)
4778 goto out;
4779 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4780 if (status)
4781 goto out;
4782 status = decode_putfh(&xdr);
4783 if (status != 0)
4784 goto out;
4785 status = decode_access(&xdr, res);
4786 if (status != 0)
4787 goto out;
4788 decode_getfattr(&xdr, res->fattr, res->server,
4789 !RPC_IS_ASYNC(rqstp->rq_task));
4790 out:
4791 return status;
4792 }
4793
4794 /*
4795 * Decode LOOKUP response
4796 */
4797 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4798 {
4799 struct xdr_stream xdr;
4800 struct compound_hdr hdr;
4801 int status;
4802
4803 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4804 status = decode_compound_hdr(&xdr, &hdr);
4805 if (status)
4806 goto out;
4807 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4808 if (status)
4809 goto out;
4810 if ((status = decode_putfh(&xdr)) != 0)
4811 goto out;
4812 if ((status = decode_lookup(&xdr)) != 0)
4813 goto out;
4814 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4815 goto out;
4816 status = decode_getfattr(&xdr, res->fattr, res->server
4817 ,!RPC_IS_ASYNC(rqstp->rq_task));
4818 out:
4819 return status;
4820 }
4821
4822 /*
4823 * Decode LOOKUP_ROOT response
4824 */
4825 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4826 {
4827 struct xdr_stream xdr;
4828 struct compound_hdr hdr;
4829 int status;
4830
4831 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4832 status = decode_compound_hdr(&xdr, &hdr);
4833 if (status)
4834 goto out;
4835 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4836 if (status)
4837 goto out;
4838 if ((status = decode_putrootfh(&xdr)) != 0)
4839 goto out;
4840 if ((status = decode_getfh(&xdr, res->fh)) == 0)
4841 status = decode_getfattr(&xdr, res->fattr, res->server,
4842 !RPC_IS_ASYNC(rqstp->rq_task));
4843 out:
4844 return status;
4845 }
4846
4847 /*
4848 * Decode REMOVE response
4849 */
4850 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
4851 {
4852 struct xdr_stream xdr;
4853 struct compound_hdr hdr;
4854 int status;
4855
4856 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4857 status = decode_compound_hdr(&xdr, &hdr);
4858 if (status)
4859 goto out;
4860 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4861 if (status)
4862 goto out;
4863 if ((status = decode_putfh(&xdr)) != 0)
4864 goto out;
4865 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
4866 goto out;
4867 decode_getfattr(&xdr, res->dir_attr, res->server,
4868 !RPC_IS_ASYNC(rqstp->rq_task));
4869 out:
4870 return status;
4871 }
4872
4873 /*
4874 * Decode RENAME response
4875 */
4876 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
4877 {
4878 struct xdr_stream xdr;
4879 struct compound_hdr hdr;
4880 int status;
4881
4882 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4883 status = decode_compound_hdr(&xdr, &hdr);
4884 if (status)
4885 goto out;
4886 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4887 if (status)
4888 goto out;
4889 if ((status = decode_putfh(&xdr)) != 0)
4890 goto out;
4891 if ((status = decode_savefh(&xdr)) != 0)
4892 goto out;
4893 if ((status = decode_putfh(&xdr)) != 0)
4894 goto out;
4895 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4896 goto out;
4897 /* Current FH is target directory */
4898 if (decode_getfattr(&xdr, res->new_fattr, res->server,
4899 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4900 goto out;
4901 if ((status = decode_restorefh(&xdr)) != 0)
4902 goto out;
4903 decode_getfattr(&xdr, res->old_fattr, res->server,
4904 !RPC_IS_ASYNC(rqstp->rq_task));
4905 out:
4906 return status;
4907 }
4908
4909 /*
4910 * Decode LINK response
4911 */
4912 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4913 {
4914 struct xdr_stream xdr;
4915 struct compound_hdr hdr;
4916 int status;
4917
4918 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4919 status = decode_compound_hdr(&xdr, &hdr);
4920 if (status)
4921 goto out;
4922 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4923 if (status)
4924 goto out;
4925 if ((status = decode_putfh(&xdr)) != 0)
4926 goto out;
4927 if ((status = decode_savefh(&xdr)) != 0)
4928 goto out;
4929 if ((status = decode_putfh(&xdr)) != 0)
4930 goto out;
4931 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4932 goto out;
4933 /*
4934 * Note order: OP_LINK leaves the directory as the current
4935 * filehandle.
4936 */
4937 if (decode_getfattr(&xdr, res->dir_attr, res->server,
4938 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4939 goto out;
4940 if ((status = decode_restorefh(&xdr)) != 0)
4941 goto out;
4942 decode_getfattr(&xdr, res->fattr, res->server,
4943 !RPC_IS_ASYNC(rqstp->rq_task));
4944 out:
4945 return status;
4946 }
4947
4948 /*
4949 * Decode CREATE response
4950 */
4951 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4952 {
4953 struct xdr_stream xdr;
4954 struct compound_hdr hdr;
4955 int status;
4956
4957 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4958 status = decode_compound_hdr(&xdr, &hdr);
4959 if (status)
4960 goto out;
4961 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4962 if (status)
4963 goto out;
4964 if ((status = decode_putfh(&xdr)) != 0)
4965 goto out;
4966 if ((status = decode_savefh(&xdr)) != 0)
4967 goto out;
4968 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4969 goto out;
4970 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4971 goto out;
4972 if (decode_getfattr(&xdr, res->fattr, res->server,
4973 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4974 goto out;
4975 if ((status = decode_restorefh(&xdr)) != 0)
4976 goto out;
4977 decode_getfattr(&xdr, res->dir_fattr, res->server,
4978 !RPC_IS_ASYNC(rqstp->rq_task));
4979 out:
4980 return status;
4981 }
4982
4983 /*
4984 * Decode SYMLINK response
4985 */
4986 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4987 {
4988 return nfs4_xdr_dec_create(rqstp, p, res);
4989 }
4990
4991 /*
4992 * Decode GETATTR response
4993 */
4994 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
4995 {
4996 struct xdr_stream xdr;
4997 struct compound_hdr hdr;
4998 int status;
4999
5000 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5001 status = decode_compound_hdr(&xdr, &hdr);
5002 if (status)
5003 goto out;
5004 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5005 if (status)
5006 goto out;
5007 status = decode_putfh(&xdr);
5008 if (status)
5009 goto out;
5010 status = decode_getfattr(&xdr, res->fattr, res->server,
5011 !RPC_IS_ASYNC(rqstp->rq_task));
5012 out:
5013 return status;
5014 }
5015
5016 /*
5017 * Encode an SETACL request
5018 */
5019 static int
5020 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
5021 {
5022 struct xdr_stream xdr;
5023 struct compound_hdr hdr = {
5024 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
5025 };
5026 int status;
5027
5028 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
5029 encode_compound_hdr(&xdr, req, &hdr);
5030 encode_sequence(&xdr, &args->seq_args, &hdr);
5031 encode_putfh(&xdr, args->fh, &hdr);
5032 status = encode_setacl(&xdr, args, &hdr);
5033 encode_nops(&hdr);
5034 return status;
5035 }
5036
5037 /*
5038 * Decode SETACL response
5039 */
5040 static int
5041 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
5042 struct nfs_setaclres *res)
5043 {
5044 struct xdr_stream xdr;
5045 struct compound_hdr hdr;
5046 int status;
5047
5048 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5049 status = decode_compound_hdr(&xdr, &hdr);
5050 if (status)
5051 goto out;
5052 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5053 if (status)
5054 goto out;
5055 status = decode_putfh(&xdr);
5056 if (status)
5057 goto out;
5058 status = decode_setattr(&xdr);
5059 out:
5060 return status;
5061 }
5062
5063 /*
5064 * Decode GETACL response
5065 */
5066 static int
5067 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
5068 struct nfs_getaclres *res)
5069 {
5070 struct xdr_stream xdr;
5071 struct compound_hdr hdr;
5072 int status;
5073
5074 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5075 status = decode_compound_hdr(&xdr, &hdr);
5076 if (status)
5077 goto out;
5078 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5079 if (status)
5080 goto out;
5081 status = decode_putfh(&xdr);
5082 if (status)
5083 goto out;
5084 status = decode_getacl(&xdr, rqstp, &res->acl_len);
5085
5086 out:
5087 return status;
5088 }
5089
5090 /*
5091 * Decode CLOSE response
5092 */
5093 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
5094 {
5095 struct xdr_stream xdr;
5096 struct compound_hdr hdr;
5097 int status;
5098
5099 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5100 status = decode_compound_hdr(&xdr, &hdr);
5101 if (status)
5102 goto out;
5103 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5104 if (status)
5105 goto out;
5106 status = decode_putfh(&xdr);
5107 if (status)
5108 goto out;
5109 status = decode_close(&xdr, res);
5110 if (status != 0)
5111 goto out;
5112 /*
5113 * Note: Server may do delete on close for this file
5114 * in which case the getattr call will fail with
5115 * an ESTALE error. Shouldn't be a problem,
5116 * though, since fattr->valid will remain unset.
5117 */
5118 decode_getfattr(&xdr, res->fattr, res->server,
5119 !RPC_IS_ASYNC(rqstp->rq_task));
5120 out:
5121 return status;
5122 }
5123
5124 /*
5125 * Decode OPEN response
5126 */
5127 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
5128 {
5129 struct xdr_stream xdr;
5130 struct compound_hdr hdr;
5131 int status;
5132
5133 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5134 status = decode_compound_hdr(&xdr, &hdr);
5135 if (status)
5136 goto out;
5137 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5138 if (status)
5139 goto out;
5140 status = decode_putfh(&xdr);
5141 if (status)
5142 goto out;
5143 status = decode_savefh(&xdr);
5144 if (status)
5145 goto out;
5146 status = decode_open(&xdr, res);
5147 if (status)
5148 goto out;
5149 if (decode_getfh(&xdr, &res->fh) != 0)
5150 goto out;
5151 if (decode_getfattr(&xdr, res->f_attr, res->server,
5152 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5153 goto out;
5154 if (decode_restorefh(&xdr) != 0)
5155 goto out;
5156 decode_getfattr(&xdr, res->dir_attr, res->server,
5157 !RPC_IS_ASYNC(rqstp->rq_task));
5158 out:
5159 return status;
5160 }
5161
5162 /*
5163 * Decode OPEN_CONFIRM response
5164 */
5165 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
5166 {
5167 struct xdr_stream xdr;
5168 struct compound_hdr hdr;
5169 int status;
5170
5171 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5172 status = decode_compound_hdr(&xdr, &hdr);
5173 if (status)
5174 goto out;
5175 status = decode_putfh(&xdr);
5176 if (status)
5177 goto out;
5178 status = decode_open_confirm(&xdr, res);
5179 out:
5180 return status;
5181 }
5182
5183 /*
5184 * Decode OPEN response
5185 */
5186 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
5187 {
5188 struct xdr_stream xdr;
5189 struct compound_hdr hdr;
5190 int status;
5191
5192 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5193 status = decode_compound_hdr(&xdr, &hdr);
5194 if (status)
5195 goto out;
5196 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5197 if (status)
5198 goto out;
5199 status = decode_putfh(&xdr);
5200 if (status)
5201 goto out;
5202 status = decode_open(&xdr, res);
5203 if (status)
5204 goto out;
5205 decode_getfattr(&xdr, res->f_attr, res->server,
5206 !RPC_IS_ASYNC(rqstp->rq_task));
5207 out:
5208 return status;
5209 }
5210
5211 /*
5212 * Decode SETATTR response
5213 */
5214 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
5215 {
5216 struct xdr_stream xdr;
5217 struct compound_hdr hdr;
5218 int status;
5219
5220 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5221 status = decode_compound_hdr(&xdr, &hdr);
5222 if (status)
5223 goto out;
5224 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5225 if (status)
5226 goto out;
5227 status = decode_putfh(&xdr);
5228 if (status)
5229 goto out;
5230 status = decode_setattr(&xdr);
5231 if (status)
5232 goto out;
5233 decode_getfattr(&xdr, res->fattr, res->server,
5234 !RPC_IS_ASYNC(rqstp->rq_task));
5235 out:
5236 return status;
5237 }
5238
5239 /*
5240 * Decode LOCK response
5241 */
5242 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
5243 {
5244 struct xdr_stream xdr;
5245 struct compound_hdr hdr;
5246 int status;
5247
5248 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5249 status = decode_compound_hdr(&xdr, &hdr);
5250 if (status)
5251 goto out;
5252 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5253 if (status)
5254 goto out;
5255 status = decode_putfh(&xdr);
5256 if (status)
5257 goto out;
5258 status = decode_lock(&xdr, res);
5259 out:
5260 return status;
5261 }
5262
5263 /*
5264 * Decode LOCKT response
5265 */
5266 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
5267 {
5268 struct xdr_stream xdr;
5269 struct compound_hdr hdr;
5270 int status;
5271
5272 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5273 status = decode_compound_hdr(&xdr, &hdr);
5274 if (status)
5275 goto out;
5276 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5277 if (status)
5278 goto out;
5279 status = decode_putfh(&xdr);
5280 if (status)
5281 goto out;
5282 status = decode_lockt(&xdr, res);
5283 out:
5284 return status;
5285 }
5286
5287 /*
5288 * Decode LOCKU response
5289 */
5290 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
5291 {
5292 struct xdr_stream xdr;
5293 struct compound_hdr hdr;
5294 int status;
5295
5296 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5297 status = decode_compound_hdr(&xdr, &hdr);
5298 if (status)
5299 goto out;
5300 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5301 if (status)
5302 goto out;
5303 status = decode_putfh(&xdr);
5304 if (status)
5305 goto out;
5306 status = decode_locku(&xdr, res);
5307 out:
5308 return status;
5309 }
5310
5311 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5312 {
5313 struct xdr_stream xdr;
5314 struct compound_hdr hdr;
5315 int status;
5316
5317 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5318 status = decode_compound_hdr(&xdr, &hdr);
5319 if (!status)
5320 status = decode_release_lockowner(&xdr);
5321 return status;
5322 }
5323
5324 /*
5325 * Decode READLINK response
5326 */
5327 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
5328 struct nfs4_readlink_res *res)
5329 {
5330 struct xdr_stream xdr;
5331 struct compound_hdr hdr;
5332 int status;
5333
5334 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5335 status = decode_compound_hdr(&xdr, &hdr);
5336 if (status)
5337 goto out;
5338 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5339 if (status)
5340 goto out;
5341 status = decode_putfh(&xdr);
5342 if (status)
5343 goto out;
5344 status = decode_readlink(&xdr, rqstp);
5345 out:
5346 return status;
5347 }
5348
5349 /*
5350 * Decode READDIR response
5351 */
5352 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
5353 {
5354 struct xdr_stream xdr;
5355 struct compound_hdr hdr;
5356 int status;
5357
5358 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5359 status = decode_compound_hdr(&xdr, &hdr);
5360 if (status)
5361 goto out;
5362 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5363 if (status)
5364 goto out;
5365 status = decode_putfh(&xdr);
5366 if (status)
5367 goto out;
5368 status = decode_readdir(&xdr, rqstp, res);
5369 out:
5370 return status;
5371 }
5372
5373 /*
5374 * Decode Read response
5375 */
5376 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
5377 {
5378 struct xdr_stream xdr;
5379 struct compound_hdr hdr;
5380 int status;
5381
5382 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5383 status = decode_compound_hdr(&xdr, &hdr);
5384 if (status)
5385 goto out;
5386 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5387 if (status)
5388 goto out;
5389 status = decode_putfh(&xdr);
5390 if (status)
5391 goto out;
5392 status = decode_read(&xdr, rqstp, res);
5393 if (!status)
5394 status = res->count;
5395 out:
5396 return status;
5397 }
5398
5399 /*
5400 * Decode WRITE response
5401 */
5402 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5403 {
5404 struct xdr_stream xdr;
5405 struct compound_hdr hdr;
5406 int status;
5407
5408 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5409 status = decode_compound_hdr(&xdr, &hdr);
5410 if (status)
5411 goto out;
5412 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5413 if (status)
5414 goto out;
5415 status = decode_putfh(&xdr);
5416 if (status)
5417 goto out;
5418 status = decode_write(&xdr, res);
5419 if (status)
5420 goto out;
5421 decode_getfattr(&xdr, res->fattr, res->server,
5422 !RPC_IS_ASYNC(rqstp->rq_task));
5423 if (!status)
5424 status = res->count;
5425 out:
5426 return status;
5427 }
5428
5429 /*
5430 * Decode COMMIT response
5431 */
5432 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5433 {
5434 struct xdr_stream xdr;
5435 struct compound_hdr hdr;
5436 int status;
5437
5438 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5439 status = decode_compound_hdr(&xdr, &hdr);
5440 if (status)
5441 goto out;
5442 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5443 if (status)
5444 goto out;
5445 status = decode_putfh(&xdr);
5446 if (status)
5447 goto out;
5448 status = decode_commit(&xdr, res);
5449 if (status)
5450 goto out;
5451 decode_getfattr(&xdr, res->fattr, res->server,
5452 !RPC_IS_ASYNC(rqstp->rq_task));
5453 out:
5454 return status;
5455 }
5456
5457 /*
5458 * Decode FSINFO response
5459 */
5460 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5461 struct nfs4_fsinfo_res *res)
5462 {
5463 struct xdr_stream xdr;
5464 struct compound_hdr hdr;
5465 int status;
5466
5467 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5468 status = decode_compound_hdr(&xdr, &hdr);
5469 if (!status)
5470 status = decode_sequence(&xdr, &res->seq_res, req);
5471 if (!status)
5472 status = decode_putfh(&xdr);
5473 if (!status)
5474 status = decode_fsinfo(&xdr, res->fsinfo);
5475 return status;
5476 }
5477
5478 /*
5479 * Decode PATHCONF response
5480 */
5481 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5482 struct nfs4_pathconf_res *res)
5483 {
5484 struct xdr_stream xdr;
5485 struct compound_hdr hdr;
5486 int status;
5487
5488 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5489 status = decode_compound_hdr(&xdr, &hdr);
5490 if (!status)
5491 status = decode_sequence(&xdr, &res->seq_res, req);
5492 if (!status)
5493 status = decode_putfh(&xdr);
5494 if (!status)
5495 status = decode_pathconf(&xdr, res->pathconf);
5496 return status;
5497 }
5498
5499 /*
5500 * Decode STATFS response
5501 */
5502 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5503 struct nfs4_statfs_res *res)
5504 {
5505 struct xdr_stream xdr;
5506 struct compound_hdr hdr;
5507 int status;
5508
5509 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5510 status = decode_compound_hdr(&xdr, &hdr);
5511 if (!status)
5512 status = decode_sequence(&xdr, &res->seq_res, req);
5513 if (!status)
5514 status = decode_putfh(&xdr);
5515 if (!status)
5516 status = decode_statfs(&xdr, res->fsstat);
5517 return status;
5518 }
5519
5520 /*
5521 * Decode GETATTR_BITMAP response
5522 */
5523 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
5524 {
5525 struct xdr_stream xdr;
5526 struct compound_hdr hdr;
5527 int status;
5528
5529 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5530 status = decode_compound_hdr(&xdr, &hdr);
5531 if (status)
5532 goto out;
5533 status = decode_sequence(&xdr, &res->seq_res, req);
5534 if (status)
5535 goto out;
5536 if ((status = decode_putfh(&xdr)) != 0)
5537 goto out;
5538 status = decode_server_caps(&xdr, res);
5539 out:
5540 return status;
5541 }
5542
5543 /*
5544 * Decode RENEW response
5545 */
5546 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5547 {
5548 struct xdr_stream xdr;
5549 struct compound_hdr hdr;
5550 int status;
5551
5552 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5553 status = decode_compound_hdr(&xdr, &hdr);
5554 if (!status)
5555 status = decode_renew(&xdr);
5556 return status;
5557 }
5558
5559 /*
5560 * Decode SETCLIENTID response
5561 */
5562 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5563 struct nfs4_setclientid_res *res)
5564 {
5565 struct xdr_stream xdr;
5566 struct compound_hdr hdr;
5567 int status;
5568
5569 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5570 status = decode_compound_hdr(&xdr, &hdr);
5571 if (!status)
5572 status = decode_setclientid(&xdr, res);
5573 return status;
5574 }
5575
5576 /*
5577 * Decode SETCLIENTID_CONFIRM response
5578 */
5579 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
5580 {
5581 struct xdr_stream xdr;
5582 struct compound_hdr hdr;
5583 int status;
5584
5585 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5586 status = decode_compound_hdr(&xdr, &hdr);
5587 if (!status)
5588 status = decode_setclientid_confirm(&xdr);
5589 if (!status)
5590 status = decode_putrootfh(&xdr);
5591 if (!status)
5592 status = decode_fsinfo(&xdr, fsinfo);
5593 return status;
5594 }
5595
5596 /*
5597 * Decode DELEGRETURN response
5598 */
5599 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
5600 {
5601 struct xdr_stream xdr;
5602 struct compound_hdr hdr;
5603 int status;
5604
5605 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5606 status = decode_compound_hdr(&xdr, &hdr);
5607 if (status)
5608 goto out;
5609 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5610 if (status)
5611 goto out;
5612 status = decode_putfh(&xdr);
5613 if (status != 0)
5614 goto out;
5615 status = decode_delegreturn(&xdr);
5616 if (status != 0)
5617 goto out;
5618 decode_getfattr(&xdr, res->fattr, res->server,
5619 !RPC_IS_ASYNC(rqstp->rq_task));
5620 out:
5621 return status;
5622 }
5623
5624 /*
5625 * Decode FS_LOCATIONS response
5626 */
5627 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5628 struct nfs4_fs_locations_res *res)
5629 {
5630 struct xdr_stream xdr;
5631 struct compound_hdr hdr;
5632 int status;
5633
5634 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5635 status = decode_compound_hdr(&xdr, &hdr);
5636 if (status)
5637 goto out;
5638 status = decode_sequence(&xdr, &res->seq_res, req);
5639 if (status)
5640 goto out;
5641 if ((status = decode_putfh(&xdr)) != 0)
5642 goto out;
5643 if ((status = decode_lookup(&xdr)) != 0)
5644 goto out;
5645 xdr_enter_page(&xdr, PAGE_SIZE);
5646 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
5647 res->fs_locations->server,
5648 !RPC_IS_ASYNC(req->rq_task));
5649 out:
5650 return status;
5651 }
5652
5653 #if defined(CONFIG_NFS_V4_1)
5654 /*
5655 * Decode EXCHANGE_ID response
5656 */
5657 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5658 void *res)
5659 {
5660 struct xdr_stream xdr;
5661 struct compound_hdr hdr;
5662 int status;
5663
5664 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5665 status = decode_compound_hdr(&xdr, &hdr);
5666 if (!status)
5667 status = decode_exchange_id(&xdr, res);
5668 return status;
5669 }
5670
5671 /*
5672 * Decode CREATE_SESSION response
5673 */
5674 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5675 struct nfs41_create_session_res *res)
5676 {
5677 struct xdr_stream xdr;
5678 struct compound_hdr hdr;
5679 int status;
5680
5681 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5682 status = decode_compound_hdr(&xdr, &hdr);
5683 if (!status)
5684 status = decode_create_session(&xdr, res);
5685 return status;
5686 }
5687
5688 /*
5689 * Decode DESTROY_SESSION response
5690 */
5691 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5692 void *dummy)
5693 {
5694 struct xdr_stream xdr;
5695 struct compound_hdr hdr;
5696 int status;
5697
5698 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5699 status = decode_compound_hdr(&xdr, &hdr);
5700 if (!status)
5701 status = decode_destroy_session(&xdr, dummy);
5702 return status;
5703 }
5704
5705 /*
5706 * Decode SEQUENCE response
5707 */
5708 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5709 struct nfs4_sequence_res *res)
5710 {
5711 struct xdr_stream xdr;
5712 struct compound_hdr hdr;
5713 int status;
5714
5715 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5716 status = decode_compound_hdr(&xdr, &hdr);
5717 if (!status)
5718 status = decode_sequence(&xdr, res, rqstp);
5719 return status;
5720 }
5721
5722 /*
5723 * Decode GET_LEASE_TIME response
5724 */
5725 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5726 struct nfs4_get_lease_time_res *res)
5727 {
5728 struct xdr_stream xdr;
5729 struct compound_hdr hdr;
5730 int status;
5731
5732 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5733 status = decode_compound_hdr(&xdr, &hdr);
5734 if (!status)
5735 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
5736 if (!status)
5737 status = decode_putrootfh(&xdr);
5738 if (!status)
5739 status = decode_fsinfo(&xdr, res->lr_fsinfo);
5740 return status;
5741 }
5742
5743 /*
5744 * Decode RECLAIM_COMPLETE response
5745 */
5746 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
5747 struct nfs41_reclaim_complete_res *res)
5748 {
5749 struct xdr_stream xdr;
5750 struct compound_hdr hdr;
5751 int status;
5752
5753 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5754 status = decode_compound_hdr(&xdr, &hdr);
5755 if (!status)
5756 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5757 if (!status)
5758 status = decode_reclaim_complete(&xdr, (void *)NULL);
5759 return status;
5760 }
5761 #endif /* CONFIG_NFS_V4_1 */
5762
5763 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
5764 {
5765 uint32_t bitmap[2] = {0};
5766 uint32_t len;
5767
5768 if (!*p++) {
5769 if (!*p)
5770 return ERR_PTR(-EAGAIN);
5771 entry->eof = 1;
5772 return ERR_PTR(-EBADCOOKIE);
5773 }
5774
5775 entry->prev_cookie = entry->cookie;
5776 p = xdr_decode_hyper(p, &entry->cookie);
5777 entry->len = ntohl(*p++);
5778 entry->name = (const char *) p;
5779 p += XDR_QUADLEN(entry->len);
5780
5781 /*
5782 * In case the server doesn't return an inode number,
5783 * we fake one here. (We don't use inode number 0,
5784 * since glibc seems to choke on it...)
5785 */
5786 entry->ino = 1;
5787
5788 len = ntohl(*p++); /* bitmap length */
5789 if (len-- > 0) {
5790 bitmap[0] = ntohl(*p++);
5791 if (len-- > 0) {
5792 bitmap[1] = ntohl(*p++);
5793 p += len;
5794 }
5795 }
5796 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
5797 if (len > 0) {
5798 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
5799 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
5800 /* Ignore the return value of rdattr_error for now */
5801 p++;
5802 len--;
5803 }
5804 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
5805 xdr_decode_hyper(p, &entry->ino);
5806 else if (bitmap[0] == FATTR4_WORD0_FILEID)
5807 xdr_decode_hyper(p, &entry->ino);
5808 p += len;
5809 }
5810
5811 entry->eof = !p[0] && p[1];
5812 return p;
5813 }
5814
5815 /*
5816 * We need to translate between nfs status return values and
5817 * the local errno values which may not be the same.
5818 */
5819 static struct {
5820 int stat;
5821 int errno;
5822 } nfs_errtbl[] = {
5823 { NFS4_OK, 0 },
5824 { NFS4ERR_PERM, -EPERM },
5825 { NFS4ERR_NOENT, -ENOENT },
5826 { NFS4ERR_IO, -errno_NFSERR_IO},
5827 { NFS4ERR_NXIO, -ENXIO },
5828 { NFS4ERR_ACCESS, -EACCES },
5829 { NFS4ERR_EXIST, -EEXIST },
5830 { NFS4ERR_XDEV, -EXDEV },
5831 { NFS4ERR_NOTDIR, -ENOTDIR },
5832 { NFS4ERR_ISDIR, -EISDIR },
5833 { NFS4ERR_INVAL, -EINVAL },
5834 { NFS4ERR_FBIG, -EFBIG },
5835 { NFS4ERR_NOSPC, -ENOSPC },
5836 { NFS4ERR_ROFS, -EROFS },
5837 { NFS4ERR_MLINK, -EMLINK },
5838 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
5839 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
5840 { NFS4ERR_DQUOT, -EDQUOT },
5841 { NFS4ERR_STALE, -ESTALE },
5842 { NFS4ERR_BADHANDLE, -EBADHANDLE },
5843 { NFS4ERR_BADOWNER, -EINVAL },
5844 { NFS4ERR_BADNAME, -EINVAL },
5845 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
5846 { NFS4ERR_NOTSUPP, -ENOTSUPP },
5847 { NFS4ERR_TOOSMALL, -ETOOSMALL },
5848 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
5849 { NFS4ERR_BADTYPE, -EBADTYPE },
5850 { NFS4ERR_LOCKED, -EAGAIN },
5851 { NFS4ERR_SYMLINK, -ELOOP },
5852 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
5853 { NFS4ERR_DEADLOCK, -EDEADLK },
5854 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
5855 * to be handled by a
5856 * middle-layer.
5857 */
5858 { -1, -EIO }
5859 };
5860
5861 /*
5862 * Convert an NFS error code to a local one.
5863 * This one is used jointly by NFSv2 and NFSv3.
5864 */
5865 static int
5866 nfs4_stat_to_errno(int stat)
5867 {
5868 int i;
5869 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
5870 if (nfs_errtbl[i].stat == stat)
5871 return nfs_errtbl[i].errno;
5872 }
5873 if (stat <= 10000 || stat > 10100) {
5874 /* The server is looney tunes. */
5875 return -EREMOTEIO;
5876 }
5877 /* If we cannot translate the error, the recovery routines should
5878 * handle it.
5879 * Note: remaining NFSv4 error codes have values > 10000, so should
5880 * not conflict with native Linux error codes.
5881 */
5882 return -stat;
5883 }
5884
5885 #define PROC(proc, argtype, restype) \
5886 [NFSPROC4_CLNT_##proc] = { \
5887 .p_proc = NFSPROC4_COMPOUND, \
5888 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
5889 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
5890 .p_arglen = NFS4_##argtype##_sz, \
5891 .p_replen = NFS4_##restype##_sz, \
5892 .p_statidx = NFSPROC4_CLNT_##proc, \
5893 .p_name = #proc, \
5894 }
5895
5896 struct rpc_procinfo nfs4_procedures[] = {
5897 PROC(READ, enc_read, dec_read),
5898 PROC(WRITE, enc_write, dec_write),
5899 PROC(COMMIT, enc_commit, dec_commit),
5900 PROC(OPEN, enc_open, dec_open),
5901 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
5902 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
5903 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
5904 PROC(CLOSE, enc_close, dec_close),
5905 PROC(SETATTR, enc_setattr, dec_setattr),
5906 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
5907 PROC(RENEW, enc_renew, dec_renew),
5908 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
5909 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
5910 PROC(LOCK, enc_lock, dec_lock),
5911 PROC(LOCKT, enc_lockt, dec_lockt),
5912 PROC(LOCKU, enc_locku, dec_locku),
5913 PROC(ACCESS, enc_access, dec_access),
5914 PROC(GETATTR, enc_getattr, dec_getattr),
5915 PROC(LOOKUP, enc_lookup, dec_lookup),
5916 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
5917 PROC(REMOVE, enc_remove, dec_remove),
5918 PROC(RENAME, enc_rename, dec_rename),
5919 PROC(LINK, enc_link, dec_link),
5920 PROC(SYMLINK, enc_symlink, dec_symlink),
5921 PROC(CREATE, enc_create, dec_create),
5922 PROC(PATHCONF, enc_pathconf, dec_pathconf),
5923 PROC(STATFS, enc_statfs, dec_statfs),
5924 PROC(READLINK, enc_readlink, dec_readlink),
5925 PROC(READDIR, enc_readdir, dec_readdir),
5926 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
5927 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
5928 PROC(GETACL, enc_getacl, dec_getacl),
5929 PROC(SETACL, enc_setacl, dec_setacl),
5930 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
5931 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
5932 #if defined(CONFIG_NFS_V4_1)
5933 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
5934 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
5935 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
5936 PROC(SEQUENCE, enc_sequence, dec_sequence),
5937 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5938 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
5939 #endif /* CONFIG_NFS_V4_1 */
5940 };
5941
5942 struct rpc_version nfs_version4 = {
5943 .number = 4,
5944 .nrprocs = ARRAY_SIZE(nfs4_procedures),
5945 .procs = nfs4_procedures
5946 };
5947
5948 /*
5949 * Local variables:
5950 * c-basic-offset: 8
5951 * End:
5952 */
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