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NFS: Readdir plus in v4
[linux-2.6/btrfs-unstable.git] / fs / nfs / nfs4xdr.c
blobccfb1c92b2624e53016f5486e637efc9ff7b4e67
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, IDMAP_NAMESZ);
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, IDMAP_NAMESZ);
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] = {0, 0};
1389 __be32 *p;
1390
1391 if (readdir->plus) {
1392 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1393 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE;
1394 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1395 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1396 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1397 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1398 }
1399 attrs[0] |= FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID;
1400 attrs[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
1401
1402 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1403 *p++ = cpu_to_be32(OP_READDIR);
1404 p = xdr_encode_hyper(p, readdir->cookie);
1405 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1406 *p++ = cpu_to_be32(readdir->count >> 1); /* We're not doing readdirplus */
1407 *p++ = cpu_to_be32(readdir->count);
1408 *p++ = cpu_to_be32(2);
1409
1410 if (!readdir->plus) {
1411 /* Switch to mounted_on_fileid if the server supports it */
1412 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1413 attrs[0] &= ~FATTR4_WORD0_FILEID;
1414 else
1415 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1416 }
1417
1418 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1419 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1420 hdr->nops++;
1421 hdr->replen += decode_readdir_maxsz;
1422 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1423 __func__,
1424 (unsigned long long)readdir->cookie,
1425 ((u32 *)readdir->verifier.data)[0],
1426 ((u32 *)readdir->verifier.data)[1],
1427 attrs[0] & readdir->bitmask[0],
1428 attrs[1] & readdir->bitmask[1]);
1429 }
1430
1431 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1432 {
1433 __be32 *p;
1434
1435 p = reserve_space(xdr, 4);
1436 *p = cpu_to_be32(OP_READLINK);
1437 hdr->nops++;
1438 hdr->replen += decode_readlink_maxsz;
1439 }
1440
1441 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1442 {
1443 __be32 *p;
1444
1445 p = reserve_space(xdr, 8 + name->len);
1446 *p++ = cpu_to_be32(OP_REMOVE);
1447 xdr_encode_opaque(p, name->name, name->len);
1448 hdr->nops++;
1449 hdr->replen += decode_remove_maxsz;
1450 }
1451
1452 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1453 {
1454 __be32 *p;
1455
1456 p = reserve_space(xdr, 4);
1457 *p = cpu_to_be32(OP_RENAME);
1458 encode_string(xdr, oldname->len, oldname->name);
1459 encode_string(xdr, newname->len, newname->name);
1460 hdr->nops++;
1461 hdr->replen += decode_rename_maxsz;
1462 }
1463
1464 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1465 {
1466 __be32 *p;
1467
1468 p = reserve_space(xdr, 12);
1469 *p++ = cpu_to_be32(OP_RENEW);
1470 xdr_encode_hyper(p, client_stateid->cl_clientid);
1471 hdr->nops++;
1472 hdr->replen += decode_renew_maxsz;
1473 }
1474
1475 static void
1476 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1477 {
1478 __be32 *p;
1479
1480 p = reserve_space(xdr, 4);
1481 *p = cpu_to_be32(OP_RESTOREFH);
1482 hdr->nops++;
1483 hdr->replen += decode_restorefh_maxsz;
1484 }
1485
1486 static int
1487 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1488 {
1489 __be32 *p;
1490
1491 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1492 *p++ = cpu_to_be32(OP_SETATTR);
1493 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1494 p = reserve_space(xdr, 2*4);
1495 *p++ = cpu_to_be32(1);
1496 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1497 if (arg->acl_len % 4)
1498 return -EINVAL;
1499 p = reserve_space(xdr, 4);
1500 *p = cpu_to_be32(arg->acl_len);
1501 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1502 hdr->nops++;
1503 hdr->replen += decode_setacl_maxsz;
1504 return 0;
1505 }
1506
1507 static void
1508 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1509 {
1510 __be32 *p;
1511
1512 p = reserve_space(xdr, 4);
1513 *p = cpu_to_be32(OP_SAVEFH);
1514 hdr->nops++;
1515 hdr->replen += decode_savefh_maxsz;
1516 }
1517
1518 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1519 {
1520 __be32 *p;
1521
1522 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1523 *p++ = cpu_to_be32(OP_SETATTR);
1524 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1525 hdr->nops++;
1526 hdr->replen += decode_setattr_maxsz;
1527 encode_attrs(xdr, arg->iap, server);
1528 }
1529
1530 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1531 {
1532 __be32 *p;
1533
1534 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1535 *p++ = cpu_to_be32(OP_SETCLIENTID);
1536 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1537
1538 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1539 p = reserve_space(xdr, 4);
1540 *p = cpu_to_be32(setclientid->sc_prog);
1541 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1542 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1543 p = reserve_space(xdr, 4);
1544 *p = cpu_to_be32(setclientid->sc_cb_ident);
1545 hdr->nops++;
1546 hdr->replen += decode_setclientid_maxsz;
1547 }
1548
1549 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1550 {
1551 __be32 *p;
1552
1553 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1554 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1555 p = xdr_encode_hyper(p, arg->clientid);
1556 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
1557 hdr->nops++;
1558 hdr->replen += decode_setclientid_confirm_maxsz;
1559 }
1560
1561 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1562 {
1563 __be32 *p;
1564
1565 p = reserve_space(xdr, 4);
1566 *p = cpu_to_be32(OP_WRITE);
1567
1568 encode_stateid(xdr, args->context, args->lock_context);
1569
1570 p = reserve_space(xdr, 16);
1571 p = xdr_encode_hyper(p, args->offset);
1572 *p++ = cpu_to_be32(args->stable);
1573 *p = cpu_to_be32(args->count);
1574
1575 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1576 hdr->nops++;
1577 hdr->replen += decode_write_maxsz;
1578 }
1579
1580 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1581 {
1582 __be32 *p;
1583
1584 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1585
1586 *p++ = cpu_to_be32(OP_DELEGRETURN);
1587 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1588 hdr->nops++;
1589 hdr->replen += decode_delegreturn_maxsz;
1590 }
1591
1592 #if defined(CONFIG_NFS_V4_1)
1593 /* NFSv4.1 operations */
1594 static void encode_exchange_id(struct xdr_stream *xdr,
1595 struct nfs41_exchange_id_args *args,
1596 struct compound_hdr *hdr)
1597 {
1598 __be32 *p;
1599
1600 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1601 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1602 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1603
1604 encode_string(xdr, args->id_len, args->id);
1605
1606 p = reserve_space(xdr, 12);
1607 *p++ = cpu_to_be32(args->flags);
1608 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1609 *p = cpu_to_be32(0); /* zero length implementation id array */
1610 hdr->nops++;
1611 hdr->replen += decode_exchange_id_maxsz;
1612 }
1613
1614 static void encode_create_session(struct xdr_stream *xdr,
1615 struct nfs41_create_session_args *args,
1616 struct compound_hdr *hdr)
1617 {
1618 __be32 *p;
1619 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1620 uint32_t len;
1621 struct nfs_client *clp = args->client;
1622 u32 max_resp_sz_cached;
1623
1624 /*
1625 * Assumes OPEN is the biggest non-idempotent compound.
1626 * 2 is the verifier.
1627 */
1628 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1629 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1630
1631 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1632 clp->cl_ipaddr);
1633
1634 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1635 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1636 p = xdr_encode_hyper(p, clp->cl_ex_clid);
1637 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1638 *p++ = cpu_to_be32(args->flags); /*flags */
1639
1640 /* Fore Channel */
1641 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1642 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1643 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1644 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1645 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1646 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1647 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1648
1649 /* Back Channel */
1650 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1651 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1652 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1653 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1654 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1655 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1656 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1657
1658 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1659 *p++ = cpu_to_be32(1);
1660 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1661
1662 /* authsys_parms rfc1831 */
1663 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1664 p = xdr_encode_opaque(p, machine_name, len);
1665 *p++ = cpu_to_be32(0); /* UID */
1666 *p++ = cpu_to_be32(0); /* GID */
1667 *p = cpu_to_be32(0); /* No more gids */
1668 hdr->nops++;
1669 hdr->replen += decode_create_session_maxsz;
1670 }
1671
1672 static void encode_destroy_session(struct xdr_stream *xdr,
1673 struct nfs4_session *session,
1674 struct compound_hdr *hdr)
1675 {
1676 __be32 *p;
1677 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1678 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1679 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1680 hdr->nops++;
1681 hdr->replen += decode_destroy_session_maxsz;
1682 }
1683
1684 static void encode_reclaim_complete(struct xdr_stream *xdr,
1685 struct nfs41_reclaim_complete_args *args,
1686 struct compound_hdr *hdr)
1687 {
1688 __be32 *p;
1689
1690 p = reserve_space(xdr, 8);
1691 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1692 *p++ = cpu_to_be32(args->one_fs);
1693 hdr->nops++;
1694 hdr->replen += decode_reclaim_complete_maxsz;
1695 }
1696 #endif /* CONFIG_NFS_V4_1 */
1697
1698 static void encode_sequence(struct xdr_stream *xdr,
1699 const struct nfs4_sequence_args *args,
1700 struct compound_hdr *hdr)
1701 {
1702 #if defined(CONFIG_NFS_V4_1)
1703 struct nfs4_session *session = args->sa_session;
1704 struct nfs4_slot_table *tp;
1705 struct nfs4_slot *slot;
1706 __be32 *p;
1707
1708 if (!session)
1709 return;
1710
1711 tp = &session->fc_slot_table;
1712
1713 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1714 slot = tp->slots + args->sa_slotid;
1715
1716 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1717 *p++ = cpu_to_be32(OP_SEQUENCE);
1718
1719 /*
1720 * Sessionid + seqid + slotid + max slotid + cache_this
1721 */
1722 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1723 "max_slotid=%d cache_this=%d\n",
1724 __func__,
1725 ((u32 *)session->sess_id.data)[0],
1726 ((u32 *)session->sess_id.data)[1],
1727 ((u32 *)session->sess_id.data)[2],
1728 ((u32 *)session->sess_id.data)[3],
1729 slot->seq_nr, args->sa_slotid,
1730 tp->highest_used_slotid, args->sa_cache_this);
1731 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1732 *p++ = cpu_to_be32(slot->seq_nr);
1733 *p++ = cpu_to_be32(args->sa_slotid);
1734 *p++ = cpu_to_be32(tp->highest_used_slotid);
1735 *p = cpu_to_be32(args->sa_cache_this);
1736 hdr->nops++;
1737 hdr->replen += decode_sequence_maxsz;
1738 #endif /* CONFIG_NFS_V4_1 */
1739 }
1740
1741 /*
1742 * END OF "GENERIC" ENCODE ROUTINES.
1743 */
1744
1745 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1746 {
1747 #if defined(CONFIG_NFS_V4_1)
1748 if (args->sa_session)
1749 return args->sa_session->clp->cl_mvops->minor_version;
1750 #endif /* CONFIG_NFS_V4_1 */
1751 return 0;
1752 }
1753
1754 /*
1755 * Encode an ACCESS request
1756 */
1757 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1758 {
1759 struct xdr_stream xdr;
1760 struct compound_hdr hdr = {
1761 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1762 };
1763
1764 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1765 encode_compound_hdr(&xdr, req, &hdr);
1766 encode_sequence(&xdr, &args->seq_args, &hdr);
1767 encode_putfh(&xdr, args->fh, &hdr);
1768 encode_access(&xdr, args->access, &hdr);
1769 encode_getfattr(&xdr, args->bitmask, &hdr);
1770 encode_nops(&hdr);
1771 return 0;
1772 }
1773
1774 /*
1775 * Encode LOOKUP request
1776 */
1777 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1778 {
1779 struct xdr_stream xdr;
1780 struct compound_hdr hdr = {
1781 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1782 };
1783
1784 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1785 encode_compound_hdr(&xdr, req, &hdr);
1786 encode_sequence(&xdr, &args->seq_args, &hdr);
1787 encode_putfh(&xdr, args->dir_fh, &hdr);
1788 encode_lookup(&xdr, args->name, &hdr);
1789 encode_getfh(&xdr, &hdr);
1790 encode_getfattr(&xdr, args->bitmask, &hdr);
1791 encode_nops(&hdr);
1792 return 0;
1793 }
1794
1795 /*
1796 * Encode LOOKUP_ROOT request
1797 */
1798 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1799 {
1800 struct xdr_stream xdr;
1801 struct compound_hdr hdr = {
1802 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1803 };
1804
1805 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1806 encode_compound_hdr(&xdr, req, &hdr);
1807 encode_sequence(&xdr, &args->seq_args, &hdr);
1808 encode_putrootfh(&xdr, &hdr);
1809 encode_getfh(&xdr, &hdr);
1810 encode_getfattr(&xdr, args->bitmask, &hdr);
1811 encode_nops(&hdr);
1812 return 0;
1813 }
1814
1815 /*
1816 * Encode REMOVE request
1817 */
1818 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1819 {
1820 struct xdr_stream xdr;
1821 struct compound_hdr hdr = {
1822 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1823 };
1824
1825 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1826 encode_compound_hdr(&xdr, req, &hdr);
1827 encode_sequence(&xdr, &args->seq_args, &hdr);
1828 encode_putfh(&xdr, args->fh, &hdr);
1829 encode_remove(&xdr, &args->name, &hdr);
1830 encode_getfattr(&xdr, args->bitmask, &hdr);
1831 encode_nops(&hdr);
1832 return 0;
1833 }
1834
1835 /*
1836 * Encode RENAME request
1837 */
1838 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args)
1839 {
1840 struct xdr_stream xdr;
1841 struct compound_hdr hdr = {
1842 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1843 };
1844
1845 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1846 encode_compound_hdr(&xdr, req, &hdr);
1847 encode_sequence(&xdr, &args->seq_args, &hdr);
1848 encode_putfh(&xdr, args->old_dir, &hdr);
1849 encode_savefh(&xdr, &hdr);
1850 encode_putfh(&xdr, args->new_dir, &hdr);
1851 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1852 encode_getfattr(&xdr, args->bitmask, &hdr);
1853 encode_restorefh(&xdr, &hdr);
1854 encode_getfattr(&xdr, args->bitmask, &hdr);
1855 encode_nops(&hdr);
1856 return 0;
1857 }
1858
1859 /*
1860 * Encode LINK request
1861 */
1862 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1863 {
1864 struct xdr_stream xdr;
1865 struct compound_hdr hdr = {
1866 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1867 };
1868
1869 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1870 encode_compound_hdr(&xdr, req, &hdr);
1871 encode_sequence(&xdr, &args->seq_args, &hdr);
1872 encode_putfh(&xdr, args->fh, &hdr);
1873 encode_savefh(&xdr, &hdr);
1874 encode_putfh(&xdr, args->dir_fh, &hdr);
1875 encode_link(&xdr, args->name, &hdr);
1876 encode_getfattr(&xdr, args->bitmask, &hdr);
1877 encode_restorefh(&xdr, &hdr);
1878 encode_getfattr(&xdr, args->bitmask, &hdr);
1879 encode_nops(&hdr);
1880 return 0;
1881 }
1882
1883 /*
1884 * Encode CREATE request
1885 */
1886 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1887 {
1888 struct xdr_stream xdr;
1889 struct compound_hdr hdr = {
1890 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1891 };
1892
1893 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1894 encode_compound_hdr(&xdr, req, &hdr);
1895 encode_sequence(&xdr, &args->seq_args, &hdr);
1896 encode_putfh(&xdr, args->dir_fh, &hdr);
1897 encode_savefh(&xdr, &hdr);
1898 encode_create(&xdr, args, &hdr);
1899 encode_getfh(&xdr, &hdr);
1900 encode_getfattr(&xdr, args->bitmask, &hdr);
1901 encode_restorefh(&xdr, &hdr);
1902 encode_getfattr(&xdr, args->bitmask, &hdr);
1903 encode_nops(&hdr);
1904 return 0;
1905 }
1906
1907 /*
1908 * Encode SYMLINK request
1909 */
1910 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1911 {
1912 return nfs4_xdr_enc_create(req, p, args);
1913 }
1914
1915 /*
1916 * Encode GETATTR request
1917 */
1918 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1919 {
1920 struct xdr_stream xdr;
1921 struct compound_hdr hdr = {
1922 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1923 };
1924
1925 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1926 encode_compound_hdr(&xdr, req, &hdr);
1927 encode_sequence(&xdr, &args->seq_args, &hdr);
1928 encode_putfh(&xdr, args->fh, &hdr);
1929 encode_getfattr(&xdr, args->bitmask, &hdr);
1930 encode_nops(&hdr);
1931 return 0;
1932 }
1933
1934 /*
1935 * Encode a CLOSE request
1936 */
1937 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1938 {
1939 struct xdr_stream xdr;
1940 struct compound_hdr hdr = {
1941 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1942 };
1943
1944 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1945 encode_compound_hdr(&xdr, req, &hdr);
1946 encode_sequence(&xdr, &args->seq_args, &hdr);
1947 encode_putfh(&xdr, args->fh, &hdr);
1948 encode_close(&xdr, args, &hdr);
1949 encode_getfattr(&xdr, args->bitmask, &hdr);
1950 encode_nops(&hdr);
1951 return 0;
1952 }
1953
1954 /*
1955 * Encode an OPEN request
1956 */
1957 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1958 {
1959 struct xdr_stream xdr;
1960 struct compound_hdr hdr = {
1961 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1962 };
1963
1964 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1965 encode_compound_hdr(&xdr, req, &hdr);
1966 encode_sequence(&xdr, &args->seq_args, &hdr);
1967 encode_putfh(&xdr, args->fh, &hdr);
1968 encode_savefh(&xdr, &hdr);
1969 encode_open(&xdr, args, &hdr);
1970 encode_getfh(&xdr, &hdr);
1971 encode_getfattr(&xdr, args->bitmask, &hdr);
1972 encode_restorefh(&xdr, &hdr);
1973 encode_getfattr(&xdr, args->bitmask, &hdr);
1974 encode_nops(&hdr);
1975 return 0;
1976 }
1977
1978 /*
1979 * Encode an OPEN_CONFIRM request
1980 */
1981 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1982 {
1983 struct xdr_stream xdr;
1984 struct compound_hdr hdr = {
1985 .nops = 0,
1986 };
1987
1988 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1989 encode_compound_hdr(&xdr, req, &hdr);
1990 encode_putfh(&xdr, args->fh, &hdr);
1991 encode_open_confirm(&xdr, args, &hdr);
1992 encode_nops(&hdr);
1993 return 0;
1994 }
1995
1996 /*
1997 * Encode an OPEN request with no attributes.
1998 */
1999 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
2000 {
2001 struct xdr_stream xdr;
2002 struct compound_hdr hdr = {
2003 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2004 };
2005
2006 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2007 encode_compound_hdr(&xdr, req, &hdr);
2008 encode_sequence(&xdr, &args->seq_args, &hdr);
2009 encode_putfh(&xdr, args->fh, &hdr);
2010 encode_open(&xdr, args, &hdr);
2011 encode_getfattr(&xdr, args->bitmask, &hdr);
2012 encode_nops(&hdr);
2013 return 0;
2014 }
2015
2016 /*
2017 * Encode an OPEN_DOWNGRADE request
2018 */
2019 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
2020 {
2021 struct xdr_stream xdr;
2022 struct compound_hdr hdr = {
2023 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2024 };
2025
2026 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2027 encode_compound_hdr(&xdr, req, &hdr);
2028 encode_sequence(&xdr, &args->seq_args, &hdr);
2029 encode_putfh(&xdr, args->fh, &hdr);
2030 encode_open_downgrade(&xdr, args, &hdr);
2031 encode_getfattr(&xdr, args->bitmask, &hdr);
2032 encode_nops(&hdr);
2033 return 0;
2034 }
2035
2036 /*
2037 * Encode a LOCK request
2038 */
2039 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
2040 {
2041 struct xdr_stream xdr;
2042 struct compound_hdr hdr = {
2043 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2044 };
2045
2046 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2047 encode_compound_hdr(&xdr, req, &hdr);
2048 encode_sequence(&xdr, &args->seq_args, &hdr);
2049 encode_putfh(&xdr, args->fh, &hdr);
2050 encode_lock(&xdr, args, &hdr);
2051 encode_nops(&hdr);
2052 return 0;
2053 }
2054
2055 /*
2056 * Encode a LOCKT request
2057 */
2058 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
2059 {
2060 struct xdr_stream xdr;
2061 struct compound_hdr hdr = {
2062 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2063 };
2064
2065 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2066 encode_compound_hdr(&xdr, req, &hdr);
2067 encode_sequence(&xdr, &args->seq_args, &hdr);
2068 encode_putfh(&xdr, args->fh, &hdr);
2069 encode_lockt(&xdr, args, &hdr);
2070 encode_nops(&hdr);
2071 return 0;
2072 }
2073
2074 /*
2075 * Encode a LOCKU request
2076 */
2077 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
2078 {
2079 struct xdr_stream xdr;
2080 struct compound_hdr hdr = {
2081 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2082 };
2083
2084 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2085 encode_compound_hdr(&xdr, req, &hdr);
2086 encode_sequence(&xdr, &args->seq_args, &hdr);
2087 encode_putfh(&xdr, args->fh, &hdr);
2088 encode_locku(&xdr, args, &hdr);
2089 encode_nops(&hdr);
2090 return 0;
2091 }
2092
2093 static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args)
2094 {
2095 struct xdr_stream xdr;
2096 struct compound_hdr hdr = {
2097 .minorversion = 0,
2098 };
2099
2100 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2101 encode_compound_hdr(&xdr, req, &hdr);
2102 encode_release_lockowner(&xdr, &args->lock_owner, &hdr);
2103 encode_nops(&hdr);
2104 return 0;
2105 }
2106
2107 /*
2108 * Encode a READLINK request
2109 */
2110 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
2111 {
2112 struct xdr_stream xdr;
2113 struct compound_hdr hdr = {
2114 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2115 };
2116
2117 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2118 encode_compound_hdr(&xdr, req, &hdr);
2119 encode_sequence(&xdr, &args->seq_args, &hdr);
2120 encode_putfh(&xdr, args->fh, &hdr);
2121 encode_readlink(&xdr, args, req, &hdr);
2122
2123 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2124 args->pgbase, args->pglen);
2125 encode_nops(&hdr);
2126 return 0;
2127 }
2128
2129 /*
2130 * Encode a READDIR request
2131 */
2132 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
2133 {
2134 struct xdr_stream xdr;
2135 struct compound_hdr hdr = {
2136 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2137 };
2138
2139 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2140 encode_compound_hdr(&xdr, req, &hdr);
2141 encode_sequence(&xdr, &args->seq_args, &hdr);
2142 encode_putfh(&xdr, args->fh, &hdr);
2143 encode_readdir(&xdr, args, req, &hdr);
2144
2145 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2146 args->pgbase, args->count);
2147 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2148 __func__, hdr.replen << 2, args->pages,
2149 args->pgbase, args->count);
2150 encode_nops(&hdr);
2151 return 0;
2152 }
2153
2154 /*
2155 * Encode a READ request
2156 */
2157 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
2158 {
2159 struct xdr_stream xdr;
2160 struct compound_hdr hdr = {
2161 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2162 };
2163
2164 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2165 encode_compound_hdr(&xdr, req, &hdr);
2166 encode_sequence(&xdr, &args->seq_args, &hdr);
2167 encode_putfh(&xdr, args->fh, &hdr);
2168 encode_read(&xdr, args, &hdr);
2169
2170 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2171 args->pages, args->pgbase, args->count);
2172 req->rq_rcv_buf.flags |= XDRBUF_READ;
2173 encode_nops(&hdr);
2174 return 0;
2175 }
2176
2177 /*
2178 * Encode an SETATTR request
2179 */
2180 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
2181 {
2182 struct xdr_stream xdr;
2183 struct compound_hdr hdr = {
2184 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2185 };
2186
2187 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2188 encode_compound_hdr(&xdr, req, &hdr);
2189 encode_sequence(&xdr, &args->seq_args, &hdr);
2190 encode_putfh(&xdr, args->fh, &hdr);
2191 encode_setattr(&xdr, args, args->server, &hdr);
2192 encode_getfattr(&xdr, args->bitmask, &hdr);
2193 encode_nops(&hdr);
2194 return 0;
2195 }
2196
2197 /*
2198 * Encode a GETACL request
2199 */
2200 static int
2201 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
2202 struct nfs_getaclargs *args)
2203 {
2204 struct xdr_stream xdr;
2205 struct compound_hdr hdr = {
2206 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2207 };
2208 uint32_t replen;
2209
2210 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2211 encode_compound_hdr(&xdr, req, &hdr);
2212 encode_sequence(&xdr, &args->seq_args, &hdr);
2213 encode_putfh(&xdr, args->fh, &hdr);
2214 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2215 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2216
2217 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2218 args->acl_pages, args->acl_pgbase, args->acl_len);
2219 encode_nops(&hdr);
2220 return 0;
2221 }
2222
2223 /*
2224 * Encode a WRITE request
2225 */
2226 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2227 {
2228 struct xdr_stream xdr;
2229 struct compound_hdr hdr = {
2230 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2231 };
2232
2233 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2234 encode_compound_hdr(&xdr, req, &hdr);
2235 encode_sequence(&xdr, &args->seq_args, &hdr);
2236 encode_putfh(&xdr, args->fh, &hdr);
2237 encode_write(&xdr, args, &hdr);
2238 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2239 encode_getfattr(&xdr, args->bitmask, &hdr);
2240 encode_nops(&hdr);
2241 return 0;
2242 }
2243
2244 /*
2245 * a COMMIT request
2246 */
2247 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2248 {
2249 struct xdr_stream xdr;
2250 struct compound_hdr hdr = {
2251 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2252 };
2253
2254 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2255 encode_compound_hdr(&xdr, req, &hdr);
2256 encode_sequence(&xdr, &args->seq_args, &hdr);
2257 encode_putfh(&xdr, args->fh, &hdr);
2258 encode_commit(&xdr, args, &hdr);
2259 encode_getfattr(&xdr, args->bitmask, &hdr);
2260 encode_nops(&hdr);
2261 return 0;
2262 }
2263
2264 /*
2265 * FSINFO request
2266 */
2267 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2268 {
2269 struct xdr_stream xdr;
2270 struct compound_hdr hdr = {
2271 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2272 };
2273
2274 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2275 encode_compound_hdr(&xdr, req, &hdr);
2276 encode_sequence(&xdr, &args->seq_args, &hdr);
2277 encode_putfh(&xdr, args->fh, &hdr);
2278 encode_fsinfo(&xdr, args->bitmask, &hdr);
2279 encode_nops(&hdr);
2280 return 0;
2281 }
2282
2283 /*
2284 * a PATHCONF request
2285 */
2286 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2287 {
2288 struct xdr_stream xdr;
2289 struct compound_hdr hdr = {
2290 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2291 };
2292
2293 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2294 encode_compound_hdr(&xdr, req, &hdr);
2295 encode_sequence(&xdr, &args->seq_args, &hdr);
2296 encode_putfh(&xdr, args->fh, &hdr);
2297 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2298 &hdr);
2299 encode_nops(&hdr);
2300 return 0;
2301 }
2302
2303 /*
2304 * a STATFS request
2305 */
2306 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2307 {
2308 struct xdr_stream xdr;
2309 struct compound_hdr hdr = {
2310 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2311 };
2312
2313 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2314 encode_compound_hdr(&xdr, req, &hdr);
2315 encode_sequence(&xdr, &args->seq_args, &hdr);
2316 encode_putfh(&xdr, args->fh, &hdr);
2317 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2318 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2319 encode_nops(&hdr);
2320 return 0;
2321 }
2322
2323 /*
2324 * GETATTR_BITMAP request
2325 */
2326 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2327 struct nfs4_server_caps_arg *args)
2328 {
2329 struct xdr_stream xdr;
2330 struct compound_hdr hdr = {
2331 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2332 };
2333
2334 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2335 encode_compound_hdr(&xdr, req, &hdr);
2336 encode_sequence(&xdr, &args->seq_args, &hdr);
2337 encode_putfh(&xdr, args->fhandle, &hdr);
2338 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2339 FATTR4_WORD0_LINK_SUPPORT|
2340 FATTR4_WORD0_SYMLINK_SUPPORT|
2341 FATTR4_WORD0_ACLSUPPORT, &hdr);
2342 encode_nops(&hdr);
2343 return 0;
2344 }
2345
2346 /*
2347 * a RENEW request
2348 */
2349 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2350 {
2351 struct xdr_stream xdr;
2352 struct compound_hdr hdr = {
2353 .nops = 0,
2354 };
2355
2356 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2357 encode_compound_hdr(&xdr, req, &hdr);
2358 encode_renew(&xdr, clp, &hdr);
2359 encode_nops(&hdr);
2360 return 0;
2361 }
2362
2363 /*
2364 * a SETCLIENTID request
2365 */
2366 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2367 {
2368 struct xdr_stream xdr;
2369 struct compound_hdr hdr = {
2370 .nops = 0,
2371 };
2372
2373 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2374 encode_compound_hdr(&xdr, req, &hdr);
2375 encode_setclientid(&xdr, sc, &hdr);
2376 encode_nops(&hdr);
2377 return 0;
2378 }
2379
2380 /*
2381 * a SETCLIENTID_CONFIRM request
2382 */
2383 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg)
2384 {
2385 struct xdr_stream xdr;
2386 struct compound_hdr hdr = {
2387 .nops = 0,
2388 };
2389 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2390
2391 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2392 encode_compound_hdr(&xdr, req, &hdr);
2393 encode_setclientid_confirm(&xdr, arg, &hdr);
2394 encode_putrootfh(&xdr, &hdr);
2395 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2396 encode_nops(&hdr);
2397 return 0;
2398 }
2399
2400 /*
2401 * DELEGRETURN request
2402 */
2403 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2404 {
2405 struct xdr_stream xdr;
2406 struct compound_hdr hdr = {
2407 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2408 };
2409
2410 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2411 encode_compound_hdr(&xdr, req, &hdr);
2412 encode_sequence(&xdr, &args->seq_args, &hdr);
2413 encode_putfh(&xdr, args->fhandle, &hdr);
2414 encode_delegreturn(&xdr, args->stateid, &hdr);
2415 encode_getfattr(&xdr, args->bitmask, &hdr);
2416 encode_nops(&hdr);
2417 return 0;
2418 }
2419
2420 /*
2421 * Encode FS_LOCATIONS request
2422 */
2423 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2424 {
2425 struct xdr_stream xdr;
2426 struct compound_hdr hdr = {
2427 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2428 };
2429 uint32_t replen;
2430
2431 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2432 encode_compound_hdr(&xdr, req, &hdr);
2433 encode_sequence(&xdr, &args->seq_args, &hdr);
2434 encode_putfh(&xdr, args->dir_fh, &hdr);
2435 encode_lookup(&xdr, args->name, &hdr);
2436 replen = hdr.replen; /* get the attribute into args->page */
2437 encode_fs_locations(&xdr, args->bitmask, &hdr);
2438
2439 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2440 0, PAGE_SIZE);
2441 encode_nops(&hdr);
2442 return 0;
2443 }
2444
2445 #if defined(CONFIG_NFS_V4_1)
2446 /*
2447 * EXCHANGE_ID request
2448 */
2449 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2450 struct nfs41_exchange_id_args *args)
2451 {
2452 struct xdr_stream xdr;
2453 struct compound_hdr hdr = {
2454 .minorversion = args->client->cl_mvops->minor_version,
2455 };
2456
2457 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2458 encode_compound_hdr(&xdr, req, &hdr);
2459 encode_exchange_id(&xdr, args, &hdr);
2460 encode_nops(&hdr);
2461 return 0;
2462 }
2463
2464 /*
2465 * a CREATE_SESSION request
2466 */
2467 static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
2468 struct nfs41_create_session_args *args)
2469 {
2470 struct xdr_stream xdr;
2471 struct compound_hdr hdr = {
2472 .minorversion = args->client->cl_mvops->minor_version,
2473 };
2474
2475 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2476 encode_compound_hdr(&xdr, req, &hdr);
2477 encode_create_session(&xdr, args, &hdr);
2478 encode_nops(&hdr);
2479 return 0;
2480 }
2481
2482 /*
2483 * a DESTROY_SESSION request
2484 */
2485 static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
2486 struct nfs4_session *session)
2487 {
2488 struct xdr_stream xdr;
2489 struct compound_hdr hdr = {
2490 .minorversion = session->clp->cl_mvops->minor_version,
2491 };
2492
2493 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2494 encode_compound_hdr(&xdr, req, &hdr);
2495 encode_destroy_session(&xdr, session, &hdr);
2496 encode_nops(&hdr);
2497 return 0;
2498 }
2499
2500 /*
2501 * a SEQUENCE request
2502 */
2503 static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
2504 struct nfs4_sequence_args *args)
2505 {
2506 struct xdr_stream xdr;
2507 struct compound_hdr hdr = {
2508 .minorversion = nfs4_xdr_minorversion(args),
2509 };
2510
2511 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2512 encode_compound_hdr(&xdr, req, &hdr);
2513 encode_sequence(&xdr, args, &hdr);
2514 encode_nops(&hdr);
2515 return 0;
2516 }
2517
2518 /*
2519 * a GET_LEASE_TIME request
2520 */
2521 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2522 struct nfs4_get_lease_time_args *args)
2523 {
2524 struct xdr_stream xdr;
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2527 };
2528 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2529
2530 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2531 encode_compound_hdr(&xdr, req, &hdr);
2532 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2533 encode_putrootfh(&xdr, &hdr);
2534 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2535 encode_nops(&hdr);
2536 return 0;
2537 }
2538
2539 /*
2540 * a RECLAIM_COMPLETE request
2541 */
2542 static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
2543 struct nfs41_reclaim_complete_args *args)
2544 {
2545 struct xdr_stream xdr;
2546 struct compound_hdr hdr = {
2547 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2548 };
2549
2550 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2551 encode_compound_hdr(&xdr, req, &hdr);
2552 encode_sequence(&xdr, &args->seq_args, &hdr);
2553 encode_reclaim_complete(&xdr, args, &hdr);
2554 encode_nops(&hdr);
2555 return 0;
2556 }
2557
2558 #endif /* CONFIG_NFS_V4_1 */
2559
2560 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2561 {
2562 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2563 "Remaining buffer length is %tu words.\n",
2564 func, xdr->end - xdr->p);
2565 }
2566
2567 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2568 {
2569 __be32 *p;
2570
2571 p = xdr_inline_decode(xdr, 4);
2572 if (unlikely(!p))
2573 goto out_overflow;
2574 *len = be32_to_cpup(p);
2575 p = xdr_inline_decode(xdr, *len);
2576 if (unlikely(!p))
2577 goto out_overflow;
2578 *string = (char *)p;
2579 return 0;
2580 out_overflow:
2581 print_overflow_msg(__func__, xdr);
2582 return -EIO;
2583 }
2584
2585 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2586 {
2587 __be32 *p;
2588
2589 p = xdr_inline_decode(xdr, 8);
2590 if (unlikely(!p))
2591 goto out_overflow;
2592 hdr->status = be32_to_cpup(p++);
2593 hdr->taglen = be32_to_cpup(p);
2594
2595 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2596 if (unlikely(!p))
2597 goto out_overflow;
2598 hdr->tag = (char *)p;
2599 p += XDR_QUADLEN(hdr->taglen);
2600 hdr->nops = be32_to_cpup(p);
2601 if (unlikely(hdr->nops < 1))
2602 return nfs4_stat_to_errno(hdr->status);
2603 return 0;
2604 out_overflow:
2605 print_overflow_msg(__func__, xdr);
2606 return -EIO;
2607 }
2608
2609 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2610 {
2611 __be32 *p;
2612 uint32_t opnum;
2613 int32_t nfserr;
2614
2615 p = xdr_inline_decode(xdr, 8);
2616 if (unlikely(!p))
2617 goto out_overflow;
2618 opnum = be32_to_cpup(p++);
2619 if (opnum != expected) {
2620 dprintk("nfs: Server returned operation"
2621 " %d but we issued a request for %d\n",
2622 opnum, expected);
2623 return -EIO;
2624 }
2625 nfserr = be32_to_cpup(p);
2626 if (nfserr != NFS_OK)
2627 return nfs4_stat_to_errno(nfserr);
2628 return 0;
2629 out_overflow:
2630 print_overflow_msg(__func__, xdr);
2631 return -EIO;
2632 }
2633
2634 /* Dummy routine */
2635 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2636 {
2637 __be32 *p;
2638 unsigned int strlen;
2639 char *str;
2640
2641 p = xdr_inline_decode(xdr, 12);
2642 if (likely(p))
2643 return decode_opaque_inline(xdr, &strlen, &str);
2644 print_overflow_msg(__func__, xdr);
2645 return -EIO;
2646 }
2647
2648 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2649 {
2650 uint32_t bmlen;
2651 __be32 *p;
2652
2653 p = xdr_inline_decode(xdr, 4);
2654 if (unlikely(!p))
2655 goto out_overflow;
2656 bmlen = be32_to_cpup(p);
2657
2658 bitmap[0] = bitmap[1] = 0;
2659 p = xdr_inline_decode(xdr, (bmlen << 2));
2660 if (unlikely(!p))
2661 goto out_overflow;
2662 if (bmlen > 0) {
2663 bitmap[0] = be32_to_cpup(p++);
2664 if (bmlen > 1)
2665 bitmap[1] = be32_to_cpup(p);
2666 }
2667 return 0;
2668 out_overflow:
2669 print_overflow_msg(__func__, xdr);
2670 return -EIO;
2671 }
2672
2673 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2674 {
2675 __be32 *p;
2676
2677 p = xdr_inline_decode(xdr, 4);
2678 if (unlikely(!p))
2679 goto out_overflow;
2680 *attrlen = be32_to_cpup(p);
2681 *savep = xdr->p;
2682 return 0;
2683 out_overflow:
2684 print_overflow_msg(__func__, xdr);
2685 return -EIO;
2686 }
2687
2688 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2689 {
2690 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2691 decode_attr_bitmap(xdr, bitmask);
2692 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2693 } else
2694 bitmask[0] = bitmask[1] = 0;
2695 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2696 return 0;
2697 }
2698
2699 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2700 {
2701 __be32 *p;
2702 int ret = 0;
2703
2704 *type = 0;
2705 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2706 return -EIO;
2707 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2708 p = xdr_inline_decode(xdr, 4);
2709 if (unlikely(!p))
2710 goto out_overflow;
2711 *type = be32_to_cpup(p);
2712 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2713 dprintk("%s: bad type %d\n", __func__, *type);
2714 return -EIO;
2715 }
2716 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2717 ret = NFS_ATTR_FATTR_TYPE;
2718 }
2719 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2720 return ret;
2721 out_overflow:
2722 print_overflow_msg(__func__, xdr);
2723 return -EIO;
2724 }
2725
2726 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2727 {
2728 __be32 *p;
2729 int ret = 0;
2730
2731 *change = 0;
2732 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2733 return -EIO;
2734 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2735 p = xdr_inline_decode(xdr, 8);
2736 if (unlikely(!p))
2737 goto out_overflow;
2738 xdr_decode_hyper(p, change);
2739 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2740 ret = NFS_ATTR_FATTR_CHANGE;
2741 }
2742 dprintk("%s: change attribute=%Lu\n", __func__,
2743 (unsigned long long)*change);
2744 return ret;
2745 out_overflow:
2746 print_overflow_msg(__func__, xdr);
2747 return -EIO;
2748 }
2749
2750 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2751 {
2752 __be32 *p;
2753 int ret = 0;
2754
2755 *size = 0;
2756 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2757 return -EIO;
2758 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2759 p = xdr_inline_decode(xdr, 8);
2760 if (unlikely(!p))
2761 goto out_overflow;
2762 xdr_decode_hyper(p, size);
2763 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2764 ret = NFS_ATTR_FATTR_SIZE;
2765 }
2766 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2767 return ret;
2768 out_overflow:
2769 print_overflow_msg(__func__, xdr);
2770 return -EIO;
2771 }
2772
2773 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2774 {
2775 __be32 *p;
2776
2777 *res = 0;
2778 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2779 return -EIO;
2780 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2781 p = xdr_inline_decode(xdr, 4);
2782 if (unlikely(!p))
2783 goto out_overflow;
2784 *res = be32_to_cpup(p);
2785 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2786 }
2787 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2788 return 0;
2789 out_overflow:
2790 print_overflow_msg(__func__, xdr);
2791 return -EIO;
2792 }
2793
2794 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2795 {
2796 __be32 *p;
2797
2798 *res = 0;
2799 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2800 return -EIO;
2801 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2802 p = xdr_inline_decode(xdr, 4);
2803 if (unlikely(!p))
2804 goto out_overflow;
2805 *res = be32_to_cpup(p);
2806 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2807 }
2808 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2809 return 0;
2810 out_overflow:
2811 print_overflow_msg(__func__, xdr);
2812 return -EIO;
2813 }
2814
2815 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2816 {
2817 __be32 *p;
2818 int ret = 0;
2819
2820 fsid->major = 0;
2821 fsid->minor = 0;
2822 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2823 return -EIO;
2824 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2825 p = xdr_inline_decode(xdr, 16);
2826 if (unlikely(!p))
2827 goto out_overflow;
2828 p = xdr_decode_hyper(p, &fsid->major);
2829 xdr_decode_hyper(p, &fsid->minor);
2830 bitmap[0] &= ~FATTR4_WORD0_FSID;
2831 ret = NFS_ATTR_FATTR_FSID;
2832 }
2833 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2834 (unsigned long long)fsid->major,
2835 (unsigned long long)fsid->minor);
2836 return ret;
2837 out_overflow:
2838 print_overflow_msg(__func__, xdr);
2839 return -EIO;
2840 }
2841
2842 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2843 {
2844 __be32 *p;
2845
2846 *res = 60;
2847 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2848 return -EIO;
2849 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2850 p = xdr_inline_decode(xdr, 4);
2851 if (unlikely(!p))
2852 goto out_overflow;
2853 *res = be32_to_cpup(p);
2854 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2855 }
2856 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2857 return 0;
2858 out_overflow:
2859 print_overflow_msg(__func__, xdr);
2860 return -EIO;
2861 }
2862
2863 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
2864 {
2865 __be32 *p;
2866
2867 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
2868 return -EIO;
2869 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
2870 p = xdr_inline_decode(xdr, 4);
2871 if (unlikely(!p))
2872 goto out_overflow;
2873 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
2874 }
2875 return 0;
2876 out_overflow:
2877 print_overflow_msg(__func__, xdr);
2878 return -EIO;
2879 }
2880
2881 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
2882 {
2883 __be32 *p;
2884 int len;
2885
2886 if (fh == NULL) {
2887 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
2888 return 0;
2889 }
2890
2891 memset(fh, 0, sizeof(*fh));
2892
2893 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
2894 return -EIO;
2895 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
2896 p = xdr_inline_decode(xdr, 4);
2897 if (unlikely(!p))
2898 goto out_overflow;
2899 len = be32_to_cpup(p);
2900 if (len > NFS4_FHSIZE)
2901 return -EIO;
2902 fh->size = len;
2903 p = xdr_inline_decode(xdr, len);
2904 if (unlikely(!p))
2905 goto out_overflow;
2906 memcpy(fh->data, p, len);
2907 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
2908 }
2909 return 0;
2910 out_overflow:
2911 print_overflow_msg(__func__, xdr);
2912 return -EIO;
2913 }
2914
2915 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2916 {
2917 __be32 *p;
2918
2919 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2920 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2921 return -EIO;
2922 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2923 p = xdr_inline_decode(xdr, 4);
2924 if (unlikely(!p))
2925 goto out_overflow;
2926 *res = be32_to_cpup(p);
2927 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2928 }
2929 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2930 return 0;
2931 out_overflow:
2932 print_overflow_msg(__func__, xdr);
2933 return -EIO;
2934 }
2935
2936 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2937 {
2938 __be32 *p;
2939 int ret = 0;
2940
2941 *fileid = 0;
2942 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2943 return -EIO;
2944 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2945 p = xdr_inline_decode(xdr, 8);
2946 if (unlikely(!p))
2947 goto out_overflow;
2948 xdr_decode_hyper(p, fileid);
2949 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2950 ret = NFS_ATTR_FATTR_FILEID;
2951 }
2952 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2953 return ret;
2954 out_overflow:
2955 print_overflow_msg(__func__, xdr);
2956 return -EIO;
2957 }
2958
2959 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2960 {
2961 __be32 *p;
2962 int ret = 0;
2963
2964 *fileid = 0;
2965 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2966 return -EIO;
2967 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2968 p = xdr_inline_decode(xdr, 8);
2969 if (unlikely(!p))
2970 goto out_overflow;
2971 xdr_decode_hyper(p, fileid);
2972 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2973 ret = NFS_ATTR_FATTR_FILEID;
2974 }
2975 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2976 return ret;
2977 out_overflow:
2978 print_overflow_msg(__func__, xdr);
2979 return -EIO;
2980 }
2981
2982 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2983 {
2984 __be32 *p;
2985 int status = 0;
2986
2987 *res = 0;
2988 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2989 return -EIO;
2990 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2991 p = xdr_inline_decode(xdr, 8);
2992 if (unlikely(!p))
2993 goto out_overflow;
2994 xdr_decode_hyper(p, res);
2995 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2996 }
2997 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2998 return status;
2999 out_overflow:
3000 print_overflow_msg(__func__, xdr);
3001 return -EIO;
3002 }
3003
3004 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3005 {
3006 __be32 *p;
3007 int status = 0;
3008
3009 *res = 0;
3010 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3011 return -EIO;
3012 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3013 p = xdr_inline_decode(xdr, 8);
3014 if (unlikely(!p))
3015 goto out_overflow;
3016 xdr_decode_hyper(p, res);
3017 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3018 }
3019 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3020 return status;
3021 out_overflow:
3022 print_overflow_msg(__func__, xdr);
3023 return -EIO;
3024 }
3025
3026 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3027 {
3028 __be32 *p;
3029 int status = 0;
3030
3031 *res = 0;
3032 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3033 return -EIO;
3034 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3035 p = xdr_inline_decode(xdr, 8);
3036 if (unlikely(!p))
3037 goto out_overflow;
3038 xdr_decode_hyper(p, res);
3039 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3040 }
3041 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3042 return status;
3043 out_overflow:
3044 print_overflow_msg(__func__, xdr);
3045 return -EIO;
3046 }
3047
3048 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3049 {
3050 u32 n;
3051 __be32 *p;
3052 int status = 0;
3053
3054 p = xdr_inline_decode(xdr, 4);
3055 if (unlikely(!p))
3056 goto out_overflow;
3057 n = be32_to_cpup(p);
3058 if (n == 0)
3059 goto root_path;
3060 dprintk("path ");
3061 path->ncomponents = 0;
3062 while (path->ncomponents < n) {
3063 struct nfs4_string *component = &path->components[path->ncomponents];
3064 status = decode_opaque_inline(xdr, &component->len, &component->data);
3065 if (unlikely(status != 0))
3066 goto out_eio;
3067 if (path->ncomponents != n)
3068 dprintk("/");
3069 dprintk("%s", component->data);
3070 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3071 path->ncomponents++;
3072 else {
3073 dprintk("cannot parse %d components in path\n", n);
3074 goto out_eio;
3075 }
3076 }
3077 out:
3078 dprintk("\n");
3079 return status;
3080 root_path:
3081 /* a root pathname is sent as a zero component4 */
3082 path->ncomponents = 1;
3083 path->components[0].len=0;
3084 path->components[0].data=NULL;
3085 dprintk("path /\n");
3086 goto out;
3087 out_eio:
3088 dprintk(" status %d", status);
3089 status = -EIO;
3090 goto out;
3091 out_overflow:
3092 print_overflow_msg(__func__, xdr);
3093 return -EIO;
3094 }
3095
3096 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3097 {
3098 int n;
3099 __be32 *p;
3100 int status = -EIO;
3101
3102 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3103 goto out;
3104 status = 0;
3105 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3106 goto out;
3107 dprintk("%s: fsroot ", __func__);
3108 status = decode_pathname(xdr, &res->fs_path);
3109 if (unlikely(status != 0))
3110 goto out;
3111 p = xdr_inline_decode(xdr, 4);
3112 if (unlikely(!p))
3113 goto out_overflow;
3114 n = be32_to_cpup(p);
3115 if (n <= 0)
3116 goto out_eio;
3117 res->nlocations = 0;
3118 while (res->nlocations < n) {
3119 u32 m;
3120 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3121
3122 p = xdr_inline_decode(xdr, 4);
3123 if (unlikely(!p))
3124 goto out_overflow;
3125 m = be32_to_cpup(p);
3126
3127 loc->nservers = 0;
3128 dprintk("%s: servers ", __func__);
3129 while (loc->nservers < m) {
3130 struct nfs4_string *server = &loc->servers[loc->nservers];
3131 status = decode_opaque_inline(xdr, &server->len, &server->data);
3132 if (unlikely(status != 0))
3133 goto out_eio;
3134 dprintk("%s ", server->data);
3135 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3136 loc->nservers++;
3137 else {
3138 unsigned int i;
3139 dprintk("%s: using first %u of %u servers "
3140 "returned for location %u\n",
3141 __func__,
3142 NFS4_FS_LOCATION_MAXSERVERS,
3143 m, res->nlocations);
3144 for (i = loc->nservers; i < m; i++) {
3145 unsigned int len;
3146 char *data;
3147 status = decode_opaque_inline(xdr, &len, &data);
3148 if (unlikely(status != 0))
3149 goto out_eio;
3150 }
3151 }
3152 }
3153 status = decode_pathname(xdr, &loc->rootpath);
3154 if (unlikely(status != 0))
3155 goto out_eio;
3156 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3157 res->nlocations++;
3158 }
3159 if (res->nlocations != 0)
3160 status = NFS_ATTR_FATTR_V4_REFERRAL;
3161 out:
3162 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3163 return status;
3164 out_overflow:
3165 print_overflow_msg(__func__, xdr);
3166 out_eio:
3167 status = -EIO;
3168 goto out;
3169 }
3170
3171 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3172 {
3173 __be32 *p;
3174 int status = 0;
3175
3176 *res = 0;
3177 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3178 return -EIO;
3179 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3180 p = xdr_inline_decode(xdr, 8);
3181 if (unlikely(!p))
3182 goto out_overflow;
3183 xdr_decode_hyper(p, res);
3184 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3185 }
3186 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3187 return status;
3188 out_overflow:
3189 print_overflow_msg(__func__, xdr);
3190 return -EIO;
3191 }
3192
3193 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3194 {
3195 __be32 *p;
3196 int status = 0;
3197
3198 *maxlink = 1;
3199 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3200 return -EIO;
3201 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3202 p = xdr_inline_decode(xdr, 4);
3203 if (unlikely(!p))
3204 goto out_overflow;
3205 *maxlink = be32_to_cpup(p);
3206 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3207 }
3208 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3209 return status;
3210 out_overflow:
3211 print_overflow_msg(__func__, xdr);
3212 return -EIO;
3213 }
3214
3215 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3216 {
3217 __be32 *p;
3218 int status = 0;
3219
3220 *maxname = 1024;
3221 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3222 return -EIO;
3223 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3224 p = xdr_inline_decode(xdr, 4);
3225 if (unlikely(!p))
3226 goto out_overflow;
3227 *maxname = be32_to_cpup(p);
3228 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3229 }
3230 dprintk("%s: maxname=%u\n", __func__, *maxname);
3231 return status;
3232 out_overflow:
3233 print_overflow_msg(__func__, xdr);
3234 return -EIO;
3235 }
3236
3237 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3238 {
3239 __be32 *p;
3240 int status = 0;
3241
3242 *res = 1024;
3243 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3244 return -EIO;
3245 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3246 uint64_t maxread;
3247 p = xdr_inline_decode(xdr, 8);
3248 if (unlikely(!p))
3249 goto out_overflow;
3250 xdr_decode_hyper(p, &maxread);
3251 if (maxread > 0x7FFFFFFF)
3252 maxread = 0x7FFFFFFF;
3253 *res = (uint32_t)maxread;
3254 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3255 }
3256 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3257 return status;
3258 out_overflow:
3259 print_overflow_msg(__func__, xdr);
3260 return -EIO;
3261 }
3262
3263 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3264 {
3265 __be32 *p;
3266 int status = 0;
3267
3268 *res = 1024;
3269 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3270 return -EIO;
3271 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3272 uint64_t maxwrite;
3273 p = xdr_inline_decode(xdr, 8);
3274 if (unlikely(!p))
3275 goto out_overflow;
3276 xdr_decode_hyper(p, &maxwrite);
3277 if (maxwrite > 0x7FFFFFFF)
3278 maxwrite = 0x7FFFFFFF;
3279 *res = (uint32_t)maxwrite;
3280 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3281 }
3282 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3283 return status;
3284 out_overflow:
3285 print_overflow_msg(__func__, xdr);
3286 return -EIO;
3287 }
3288
3289 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3290 {
3291 uint32_t tmp;
3292 __be32 *p;
3293 int ret = 0;
3294
3295 *mode = 0;
3296 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3297 return -EIO;
3298 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3299 p = xdr_inline_decode(xdr, 4);
3300 if (unlikely(!p))
3301 goto out_overflow;
3302 tmp = be32_to_cpup(p);
3303 *mode = tmp & ~S_IFMT;
3304 bitmap[1] &= ~FATTR4_WORD1_MODE;
3305 ret = NFS_ATTR_FATTR_MODE;
3306 }
3307 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3308 return ret;
3309 out_overflow:
3310 print_overflow_msg(__func__, xdr);
3311 return -EIO;
3312 }
3313
3314 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3315 {
3316 __be32 *p;
3317 int ret = 0;
3318
3319 *nlink = 1;
3320 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3321 return -EIO;
3322 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3323 p = xdr_inline_decode(xdr, 4);
3324 if (unlikely(!p))
3325 goto out_overflow;
3326 *nlink = be32_to_cpup(p);
3327 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3328 ret = NFS_ATTR_FATTR_NLINK;
3329 }
3330 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3331 return ret;
3332 out_overflow:
3333 print_overflow_msg(__func__, xdr);
3334 return -EIO;
3335 }
3336
3337 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3338 struct nfs_client *clp, uint32_t *uid, int may_sleep)
3339 {
3340 uint32_t len;
3341 __be32 *p;
3342 int ret = 0;
3343
3344 *uid = -2;
3345 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3346 return -EIO;
3347 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3348 p = xdr_inline_decode(xdr, 4);
3349 if (unlikely(!p))
3350 goto out_overflow;
3351 len = be32_to_cpup(p);
3352 p = xdr_inline_decode(xdr, len);
3353 if (unlikely(!p))
3354 goto out_overflow;
3355 if (!may_sleep) {
3356 /* do nothing */
3357 } else if (len < XDR_MAX_NETOBJ) {
3358 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3359 ret = NFS_ATTR_FATTR_OWNER;
3360 else
3361 dprintk("%s: nfs_map_name_to_uid failed!\n",
3362 __func__);
3363 } else
3364 dprintk("%s: name too long (%u)!\n",
3365 __func__, len);
3366 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3367 }
3368 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3369 return ret;
3370 out_overflow:
3371 print_overflow_msg(__func__, xdr);
3372 return -EIO;
3373 }
3374
3375 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3376 struct nfs_client *clp, uint32_t *gid, int may_sleep)
3377 {
3378 uint32_t len;
3379 __be32 *p;
3380 int ret = 0;
3381
3382 *gid = -2;
3383 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3384 return -EIO;
3385 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3386 p = xdr_inline_decode(xdr, 4);
3387 if (unlikely(!p))
3388 goto out_overflow;
3389 len = be32_to_cpup(p);
3390 p = xdr_inline_decode(xdr, len);
3391 if (unlikely(!p))
3392 goto out_overflow;
3393 if (!may_sleep) {
3394 /* do nothing */
3395 } else if (len < XDR_MAX_NETOBJ) {
3396 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3397 ret = NFS_ATTR_FATTR_GROUP;
3398 else
3399 dprintk("%s: nfs_map_group_to_gid failed!\n",
3400 __func__);
3401 } else
3402 dprintk("%s: name too long (%u)!\n",
3403 __func__, len);
3404 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3405 }
3406 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3407 return ret;
3408 out_overflow:
3409 print_overflow_msg(__func__, xdr);
3410 return -EIO;
3411 }
3412
3413 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3414 {
3415 uint32_t major = 0, minor = 0;
3416 __be32 *p;
3417 int ret = 0;
3418
3419 *rdev = MKDEV(0,0);
3420 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3421 return -EIO;
3422 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3423 dev_t tmp;
3424
3425 p = xdr_inline_decode(xdr, 8);
3426 if (unlikely(!p))
3427 goto out_overflow;
3428 major = be32_to_cpup(p++);
3429 minor = be32_to_cpup(p);
3430 tmp = MKDEV(major, minor);
3431 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3432 *rdev = tmp;
3433 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3434 ret = NFS_ATTR_FATTR_RDEV;
3435 }
3436 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3437 return ret;
3438 out_overflow:
3439 print_overflow_msg(__func__, xdr);
3440 return -EIO;
3441 }
3442
3443 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3444 {
3445 __be32 *p;
3446 int status = 0;
3447
3448 *res = 0;
3449 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3450 return -EIO;
3451 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3452 p = xdr_inline_decode(xdr, 8);
3453 if (unlikely(!p))
3454 goto out_overflow;
3455 xdr_decode_hyper(p, res);
3456 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3457 }
3458 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3459 return status;
3460 out_overflow:
3461 print_overflow_msg(__func__, xdr);
3462 return -EIO;
3463 }
3464
3465 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3466 {
3467 __be32 *p;
3468 int status = 0;
3469
3470 *res = 0;
3471 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3472 return -EIO;
3473 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3474 p = xdr_inline_decode(xdr, 8);
3475 if (unlikely(!p))
3476 goto out_overflow;
3477 xdr_decode_hyper(p, res);
3478 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3479 }
3480 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3481 return status;
3482 out_overflow:
3483 print_overflow_msg(__func__, xdr);
3484 return -EIO;
3485 }
3486
3487 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3488 {
3489 __be32 *p;
3490 int status = 0;
3491
3492 *res = 0;
3493 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3494 return -EIO;
3495 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3496 p = xdr_inline_decode(xdr, 8);
3497 if (unlikely(!p))
3498 goto out_overflow;
3499 xdr_decode_hyper(p, res);
3500 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3501 }
3502 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3503 return status;
3504 out_overflow:
3505 print_overflow_msg(__func__, xdr);
3506 return -EIO;
3507 }
3508
3509 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3510 {
3511 __be32 *p;
3512 int ret = 0;
3513
3514 *used = 0;
3515 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3516 return -EIO;
3517 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3518 p = xdr_inline_decode(xdr, 8);
3519 if (unlikely(!p))
3520 goto out_overflow;
3521 xdr_decode_hyper(p, used);
3522 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3523 ret = NFS_ATTR_FATTR_SPACE_USED;
3524 }
3525 dprintk("%s: space used=%Lu\n", __func__,
3526 (unsigned long long)*used);
3527 return ret;
3528 out_overflow:
3529 print_overflow_msg(__func__, xdr);
3530 return -EIO;
3531 }
3532
3533 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3534 {
3535 __be32 *p;
3536 uint64_t sec;
3537 uint32_t nsec;
3538
3539 p = xdr_inline_decode(xdr, 12);
3540 if (unlikely(!p))
3541 goto out_overflow;
3542 p = xdr_decode_hyper(p, &sec);
3543 nsec = be32_to_cpup(p);
3544 time->tv_sec = (time_t)sec;
3545 time->tv_nsec = (long)nsec;
3546 return 0;
3547 out_overflow:
3548 print_overflow_msg(__func__, xdr);
3549 return -EIO;
3550 }
3551
3552 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3553 {
3554 int status = 0;
3555
3556 time->tv_sec = 0;
3557 time->tv_nsec = 0;
3558 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3559 return -EIO;
3560 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3561 status = decode_attr_time(xdr, time);
3562 if (status == 0)
3563 status = NFS_ATTR_FATTR_ATIME;
3564 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3565 }
3566 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3567 return status;
3568 }
3569
3570 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3571 {
3572 int status = 0;
3573
3574 time->tv_sec = 0;
3575 time->tv_nsec = 0;
3576 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3577 return -EIO;
3578 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3579 status = decode_attr_time(xdr, time);
3580 if (status == 0)
3581 status = NFS_ATTR_FATTR_CTIME;
3582 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3583 }
3584 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3585 return status;
3586 }
3587
3588 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3589 {
3590 int status = 0;
3591
3592 time->tv_sec = 0;
3593 time->tv_nsec = 0;
3594 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3595 return -EIO;
3596 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3597 status = decode_attr_time(xdr, time);
3598 if (status == 0)
3599 status = NFS_ATTR_FATTR_MTIME;
3600 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3601 }
3602 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3603 return status;
3604 }
3605
3606 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3607 {
3608 unsigned int attrwords = XDR_QUADLEN(attrlen);
3609 unsigned int nwords = xdr->p - savep;
3610
3611 if (unlikely(attrwords != nwords)) {
3612 dprintk("%s: server returned incorrect attribute length: "
3613 "%u %c %u\n",
3614 __func__,
3615 attrwords << 2,
3616 (attrwords < nwords) ? '<' : '>',
3617 nwords << 2);
3618 return -EIO;
3619 }
3620 return 0;
3621 }
3622
3623 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3624 {
3625 __be32 *p;
3626
3627 p = xdr_inline_decode(xdr, 20);
3628 if (unlikely(!p))
3629 goto out_overflow;
3630 cinfo->atomic = be32_to_cpup(p++);
3631 p = xdr_decode_hyper(p, &cinfo->before);
3632 xdr_decode_hyper(p, &cinfo->after);
3633 return 0;
3634 out_overflow:
3635 print_overflow_msg(__func__, xdr);
3636 return -EIO;
3637 }
3638
3639 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3640 {
3641 __be32 *p;
3642 uint32_t supp, acc;
3643 int status;
3644
3645 status = decode_op_hdr(xdr, OP_ACCESS);
3646 if (status)
3647 return status;
3648 p = xdr_inline_decode(xdr, 8);
3649 if (unlikely(!p))
3650 goto out_overflow;
3651 supp = be32_to_cpup(p++);
3652 acc = be32_to_cpup(p);
3653 access->supported = supp;
3654 access->access = acc;
3655 return 0;
3656 out_overflow:
3657 print_overflow_msg(__func__, xdr);
3658 return -EIO;
3659 }
3660
3661 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
3662 {
3663 __be32 *p;
3664
3665 p = xdr_inline_decode(xdr, len);
3666 if (likely(p)) {
3667 memcpy(buf, p, len);
3668 return 0;
3669 }
3670 print_overflow_msg(__func__, xdr);
3671 return -EIO;
3672 }
3673
3674 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
3675 {
3676 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
3677 }
3678
3679 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3680 {
3681 int status;
3682
3683 status = decode_op_hdr(xdr, OP_CLOSE);
3684 if (status != -EIO)
3685 nfs_increment_open_seqid(status, res->seqid);
3686 if (!status)
3687 status = decode_stateid(xdr, &res->stateid);
3688 return status;
3689 }
3690
3691 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
3692 {
3693 return decode_opaque_fixed(xdr, verifier, 8);
3694 }
3695
3696 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3697 {
3698 int status;
3699
3700 status = decode_op_hdr(xdr, OP_COMMIT);
3701 if (!status)
3702 status = decode_verifier(xdr, res->verf->verifier);
3703 return status;
3704 }
3705
3706 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3707 {
3708 __be32 *p;
3709 uint32_t bmlen;
3710 int status;
3711
3712 status = decode_op_hdr(xdr, OP_CREATE);
3713 if (status)
3714 return status;
3715 if ((status = decode_change_info(xdr, cinfo)))
3716 return status;
3717 p = xdr_inline_decode(xdr, 4);
3718 if (unlikely(!p))
3719 goto out_overflow;
3720 bmlen = be32_to_cpup(p);
3721 p = xdr_inline_decode(xdr, bmlen << 2);
3722 if (likely(p))
3723 return 0;
3724 out_overflow:
3725 print_overflow_msg(__func__, xdr);
3726 return -EIO;
3727 }
3728
3729 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3730 {
3731 __be32 *savep;
3732 uint32_t attrlen, bitmap[2] = {0};
3733 int status;
3734
3735 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3736 goto xdr_error;
3737 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3738 goto xdr_error;
3739 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3740 goto xdr_error;
3741 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3742 goto xdr_error;
3743 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3744 goto xdr_error;
3745 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3746 goto xdr_error;
3747 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3748 goto xdr_error;
3749 status = verify_attr_len(xdr, savep, attrlen);
3750 xdr_error:
3751 dprintk("%s: xdr returned %d!\n", __func__, -status);
3752 return status;
3753 }
3754
3755 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3756 {
3757 __be32 *savep;
3758 uint32_t attrlen, bitmap[2] = {0};
3759 int status;
3760
3761 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3762 goto xdr_error;
3763 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3764 goto xdr_error;
3765 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3766 goto xdr_error;
3767
3768 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3769 goto xdr_error;
3770 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3771 goto xdr_error;
3772 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3773 goto xdr_error;
3774 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3775 goto xdr_error;
3776 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3777 goto xdr_error;
3778 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3779 goto xdr_error;
3780
3781 status = verify_attr_len(xdr, savep, attrlen);
3782 xdr_error:
3783 dprintk("%s: xdr returned %d!\n", __func__, -status);
3784 return status;
3785 }
3786
3787 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3788 {
3789 __be32 *savep;
3790 uint32_t attrlen, bitmap[2] = {0};
3791 int status;
3792
3793 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3794 goto xdr_error;
3795 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3796 goto xdr_error;
3797 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3798 goto xdr_error;
3799
3800 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3801 goto xdr_error;
3802 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3803 goto xdr_error;
3804
3805 status = verify_attr_len(xdr, savep, attrlen);
3806 xdr_error:
3807 dprintk("%s: xdr returned %d!\n", __func__, -status);
3808 return status;
3809 }
3810
3811 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
3812 struct nfs_fattr *fattr, struct nfs_fh *fh,
3813 const struct nfs_server *server, int may_sleep)
3814 {
3815 int status;
3816 umode_t fmode = 0;
3817 uint64_t fileid;
3818 uint32_t type;
3819
3820 status = decode_attr_type(xdr, bitmap, &type);
3821 if (status < 0)
3822 goto xdr_error;
3823 fattr->mode = 0;
3824 if (status != 0) {
3825 fattr->mode |= nfs_type2fmt[type];
3826 fattr->valid |= status;
3827 }
3828
3829 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3830 if (status < 0)
3831 goto xdr_error;
3832 fattr->valid |= status;
3833
3834 status = decode_attr_size(xdr, bitmap, &fattr->size);
3835 if (status < 0)
3836 goto xdr_error;
3837 fattr->valid |= status;
3838
3839 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3840 if (status < 0)
3841 goto xdr_error;
3842 fattr->valid |= status;
3843
3844 status = decode_attr_error(xdr, bitmap);
3845 if (status < 0)
3846 goto xdr_error;
3847
3848 status = decode_attr_filehandle(xdr, bitmap, fh);
3849 if (status < 0)
3850 goto xdr_error;
3851
3852 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3853 if (status < 0)
3854 goto xdr_error;
3855 fattr->valid |= status;
3856
3857 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3858 struct nfs4_fs_locations,
3859 fattr));
3860 if (status < 0)
3861 goto xdr_error;
3862 fattr->valid |= status;
3863
3864 status = decode_attr_mode(xdr, bitmap, &fmode);
3865 if (status < 0)
3866 goto xdr_error;
3867 if (status != 0) {
3868 fattr->mode |= fmode;
3869 fattr->valid |= status;
3870 }
3871
3872 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3873 if (status < 0)
3874 goto xdr_error;
3875 fattr->valid |= status;
3876
3877 status = decode_attr_owner(xdr, bitmap, server->nfs_client,
3878 &fattr->uid, may_sleep);
3879 if (status < 0)
3880 goto xdr_error;
3881 fattr->valid |= status;
3882
3883 status = decode_attr_group(xdr, bitmap, server->nfs_client,
3884 &fattr->gid, may_sleep);
3885 if (status < 0)
3886 goto xdr_error;
3887 fattr->valid |= status;
3888
3889 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3890 if (status < 0)
3891 goto xdr_error;
3892 fattr->valid |= status;
3893
3894 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3895 if (status < 0)
3896 goto xdr_error;
3897 fattr->valid |= status;
3898
3899 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3900 if (status < 0)
3901 goto xdr_error;
3902 fattr->valid |= status;
3903
3904 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3905 if (status < 0)
3906 goto xdr_error;
3907 fattr->valid |= status;
3908
3909 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3910 if (status < 0)
3911 goto xdr_error;
3912 fattr->valid |= status;
3913
3914 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3915 if (status < 0)
3916 goto xdr_error;
3917 if (status != 0) {
3918 fattr->fileid = fileid;
3919 fattr->valid |= status;
3920 }
3921
3922 xdr_error:
3923 dprintk("%s: xdr returned %d\n", __func__, -status);
3924 return status;
3925 }
3926
3927 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
3928 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
3929 {
3930 __be32 *savep;
3931 uint32_t attrlen,
3932 bitmap[2] = {0};
3933 int status;
3934
3935 status = decode_op_hdr(xdr, OP_GETATTR);
3936 if (status < 0)
3937 goto xdr_error;
3938
3939 status = decode_attr_bitmap(xdr, bitmap);
3940 if (status < 0)
3941 goto xdr_error;
3942
3943 status = decode_attr_length(xdr, &attrlen, &savep);
3944 if (status < 0)
3945 goto xdr_error;
3946
3947 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
3948 if (status < 0)
3949 goto xdr_error;
3950
3951 status = verify_attr_len(xdr, savep, attrlen);
3952 xdr_error:
3953 dprintk("%s: xdr returned %d\n", __func__, -status);
3954 return status;
3955 }
3956
3957 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
3958 const struct nfs_server *server, int may_sleep)
3959 {
3960 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
3961 }
3962
3963 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3964 {
3965 __be32 *savep;
3966 uint32_t attrlen, bitmap[2];
3967 int status;
3968
3969 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3970 goto xdr_error;
3971 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3972 goto xdr_error;
3973 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3974 goto xdr_error;
3975
3976 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3977
3978 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3979 goto xdr_error;
3980 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3981 goto xdr_error;
3982 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3983 goto xdr_error;
3984 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3985 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3986 goto xdr_error;
3987 fsinfo->wtpref = fsinfo->wtmax;
3988
3989 status = verify_attr_len(xdr, savep, attrlen);
3990 xdr_error:
3991 dprintk("%s: xdr returned %d!\n", __func__, -status);
3992 return status;
3993 }
3994
3995 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3996 {
3997 __be32 *p;
3998 uint32_t len;
3999 int status;
4000
4001 /* Zero handle first to allow comparisons */
4002 memset(fh, 0, sizeof(*fh));
4003
4004 status = decode_op_hdr(xdr, OP_GETFH);
4005 if (status)
4006 return status;
4007
4008 p = xdr_inline_decode(xdr, 4);
4009 if (unlikely(!p))
4010 goto out_overflow;
4011 len = be32_to_cpup(p);
4012 if (len > NFS4_FHSIZE)
4013 return -EIO;
4014 fh->size = len;
4015 p = xdr_inline_decode(xdr, len);
4016 if (unlikely(!p))
4017 goto out_overflow;
4018 memcpy(fh->data, p, len);
4019 return 0;
4020 out_overflow:
4021 print_overflow_msg(__func__, xdr);
4022 return -EIO;
4023 }
4024
4025 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4026 {
4027 int status;
4028
4029 status = decode_op_hdr(xdr, OP_LINK);
4030 if (status)
4031 return status;
4032 return decode_change_info(xdr, cinfo);
4033 }
4034
4035 /*
4036 * We create the owner, so we know a proper owner.id length is 4.
4037 */
4038 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4039 {
4040 uint64_t offset, length, clientid;
4041 __be32 *p;
4042 uint32_t namelen, type;
4043
4044 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4045 if (unlikely(!p))
4046 goto out_overflow;
4047 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4048 p = xdr_decode_hyper(p, &length);
4049 type = be32_to_cpup(p++); /* 4 byte read */
4050 if (fl != NULL) { /* manipulate file lock */
4051 fl->fl_start = (loff_t)offset;
4052 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4053 if (length == ~(uint64_t)0)
4054 fl->fl_end = OFFSET_MAX;
4055 fl->fl_type = F_WRLCK;
4056 if (type & 1)
4057 fl->fl_type = F_RDLCK;
4058 fl->fl_pid = 0;
4059 }
4060 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4061 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4062 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4063 if (likely(p))
4064 return -NFS4ERR_DENIED;
4065 out_overflow:
4066 print_overflow_msg(__func__, xdr);
4067 return -EIO;
4068 }
4069
4070 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4071 {
4072 int status;
4073
4074 status = decode_op_hdr(xdr, OP_LOCK);
4075 if (status == -EIO)
4076 goto out;
4077 if (status == 0) {
4078 status = decode_stateid(xdr, &res->stateid);
4079 if (unlikely(status))
4080 goto out;
4081 } else if (status == -NFS4ERR_DENIED)
4082 status = decode_lock_denied(xdr, NULL);
4083 if (res->open_seqid != NULL)
4084 nfs_increment_open_seqid(status, res->open_seqid);
4085 nfs_increment_lock_seqid(status, res->lock_seqid);
4086 out:
4087 return status;
4088 }
4089
4090 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4091 {
4092 int status;
4093 status = decode_op_hdr(xdr, OP_LOCKT);
4094 if (status == -NFS4ERR_DENIED)
4095 return decode_lock_denied(xdr, res->denied);
4096 return status;
4097 }
4098
4099 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4100 {
4101 int status;
4102
4103 status = decode_op_hdr(xdr, OP_LOCKU);
4104 if (status != -EIO)
4105 nfs_increment_lock_seqid(status, res->seqid);
4106 if (status == 0)
4107 status = decode_stateid(xdr, &res->stateid);
4108 return status;
4109 }
4110
4111 static int decode_release_lockowner(struct xdr_stream *xdr)
4112 {
4113 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4114 }
4115
4116 static int decode_lookup(struct xdr_stream *xdr)
4117 {
4118 return decode_op_hdr(xdr, OP_LOOKUP);
4119 }
4120
4121 /* This is too sick! */
4122 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4123 {
4124 __be32 *p;
4125 uint32_t limit_type, nblocks, blocksize;
4126
4127 p = xdr_inline_decode(xdr, 12);
4128 if (unlikely(!p))
4129 goto out_overflow;
4130 limit_type = be32_to_cpup(p++);
4131 switch (limit_type) {
4132 case 1:
4133 xdr_decode_hyper(p, maxsize);
4134 break;
4135 case 2:
4136 nblocks = be32_to_cpup(p++);
4137 blocksize = be32_to_cpup(p);
4138 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4139 }
4140 return 0;
4141 out_overflow:
4142 print_overflow_msg(__func__, xdr);
4143 return -EIO;
4144 }
4145
4146 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4147 {
4148 __be32 *p;
4149 uint32_t delegation_type;
4150 int status;
4151
4152 p = xdr_inline_decode(xdr, 4);
4153 if (unlikely(!p))
4154 goto out_overflow;
4155 delegation_type = be32_to_cpup(p);
4156 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4157 res->delegation_type = 0;
4158 return 0;
4159 }
4160 status = decode_stateid(xdr, &res->delegation);
4161 if (unlikely(status))
4162 return status;
4163 p = xdr_inline_decode(xdr, 4);
4164 if (unlikely(!p))
4165 goto out_overflow;
4166 res->do_recall = be32_to_cpup(p);
4167
4168 switch (delegation_type) {
4169 case NFS4_OPEN_DELEGATE_READ:
4170 res->delegation_type = FMODE_READ;
4171 break;
4172 case NFS4_OPEN_DELEGATE_WRITE:
4173 res->delegation_type = FMODE_WRITE|FMODE_READ;
4174 if (decode_space_limit(xdr, &res->maxsize) < 0)
4175 return -EIO;
4176 }
4177 return decode_ace(xdr, NULL, res->server->nfs_client);
4178 out_overflow:
4179 print_overflow_msg(__func__, xdr);
4180 return -EIO;
4181 }
4182
4183 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4184 {
4185 __be32 *p;
4186 uint32_t savewords, bmlen, i;
4187 int status;
4188
4189 status = decode_op_hdr(xdr, OP_OPEN);
4190 if (status != -EIO)
4191 nfs_increment_open_seqid(status, res->seqid);
4192 if (!status)
4193 status = decode_stateid(xdr, &res->stateid);
4194 if (unlikely(status))
4195 return status;
4196
4197 decode_change_info(xdr, &res->cinfo);
4198
4199 p = xdr_inline_decode(xdr, 8);
4200 if (unlikely(!p))
4201 goto out_overflow;
4202 res->rflags = be32_to_cpup(p++);
4203 bmlen = be32_to_cpup(p);
4204 if (bmlen > 10)
4205 goto xdr_error;
4206
4207 p = xdr_inline_decode(xdr, bmlen << 2);
4208 if (unlikely(!p))
4209 goto out_overflow;
4210 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4211 for (i = 0; i < savewords; ++i)
4212 res->attrset[i] = be32_to_cpup(p++);
4213 for (; i < NFS4_BITMAP_SIZE; i++)
4214 res->attrset[i] = 0;
4215
4216 return decode_delegation(xdr, res);
4217 xdr_error:
4218 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4219 return -EIO;
4220 out_overflow:
4221 print_overflow_msg(__func__, xdr);
4222 return -EIO;
4223 }
4224
4225 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4226 {
4227 int status;
4228
4229 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4230 if (status != -EIO)
4231 nfs_increment_open_seqid(status, res->seqid);
4232 if (!status)
4233 status = decode_stateid(xdr, &res->stateid);
4234 return status;
4235 }
4236
4237 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4238 {
4239 int status;
4240
4241 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4242 if (status != -EIO)
4243 nfs_increment_open_seqid(status, res->seqid);
4244 if (!status)
4245 status = decode_stateid(xdr, &res->stateid);
4246 return status;
4247 }
4248
4249 static int decode_putfh(struct xdr_stream *xdr)
4250 {
4251 return decode_op_hdr(xdr, OP_PUTFH);
4252 }
4253
4254 static int decode_putrootfh(struct xdr_stream *xdr)
4255 {
4256 return decode_op_hdr(xdr, OP_PUTROOTFH);
4257 }
4258
4259 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4260 {
4261 struct kvec *iov = req->rq_rcv_buf.head;
4262 __be32 *p;
4263 uint32_t count, eof, recvd, hdrlen;
4264 int status;
4265
4266 status = decode_op_hdr(xdr, OP_READ);
4267 if (status)
4268 return status;
4269 p = xdr_inline_decode(xdr, 8);
4270 if (unlikely(!p))
4271 goto out_overflow;
4272 eof = be32_to_cpup(p++);
4273 count = be32_to_cpup(p);
4274 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
4275 recvd = req->rq_rcv_buf.len - hdrlen;
4276 if (count > recvd) {
4277 dprintk("NFS: server cheating in read reply: "
4278 "count %u > recvd %u\n", count, recvd);
4279 count = recvd;
4280 eof = 0;
4281 }
4282 xdr_read_pages(xdr, count);
4283 res->eof = eof;
4284 res->count = count;
4285 return 0;
4286 out_overflow:
4287 print_overflow_msg(__func__, xdr);
4288 return -EIO;
4289 }
4290
4291 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4292 {
4293 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4294 struct kvec *iov = rcvbuf->head;
4295 size_t hdrlen;
4296 u32 recvd, pglen = rcvbuf->page_len;
4297 int status;
4298
4299 status = decode_op_hdr(xdr, OP_READDIR);
4300 if (!status)
4301 status = decode_verifier(xdr, readdir->verifier.data);
4302 if (unlikely(status))
4303 return status;
4304 dprintk("%s: verifier = %08x:%08x\n",
4305 __func__,
4306 ((u32 *)readdir->verifier.data)[0],
4307 ((u32 *)readdir->verifier.data)[1]);
4308
4309
4310 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4311 recvd = rcvbuf->len - hdrlen;
4312 if (pglen > recvd)
4313 pglen = recvd;
4314 xdr_read_pages(xdr, pglen);
4315
4316
4317 return 0;
4318 }
4319
4320 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4321 {
4322 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4323 struct kvec *iov = rcvbuf->head;
4324 size_t hdrlen;
4325 u32 len, recvd;
4326 __be32 *p;
4327 int status;
4328
4329 status = decode_op_hdr(xdr, OP_READLINK);
4330 if (status)
4331 return status;
4332
4333 /* Convert length of symlink */
4334 p = xdr_inline_decode(xdr, 4);
4335 if (unlikely(!p))
4336 goto out_overflow;
4337 len = be32_to_cpup(p);
4338 if (len >= rcvbuf->page_len || len <= 0) {
4339 dprintk("nfs: server returned giant symlink!\n");
4340 return -ENAMETOOLONG;
4341 }
4342 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4343 recvd = req->rq_rcv_buf.len - hdrlen;
4344 if (recvd < len) {
4345 dprintk("NFS: server cheating in readlink reply: "
4346 "count %u > recvd %u\n", len, recvd);
4347 return -EIO;
4348 }
4349 xdr_read_pages(xdr, len);
4350 /*
4351 * The XDR encode routine has set things up so that
4352 * the link text will be copied directly into the
4353 * buffer. We just have to do overflow-checking,
4354 * and and null-terminate the text (the VFS expects
4355 * null-termination).
4356 */
4357 xdr_terminate_string(rcvbuf, len);
4358 return 0;
4359 out_overflow:
4360 print_overflow_msg(__func__, xdr);
4361 return -EIO;
4362 }
4363
4364 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4365 {
4366 int status;
4367
4368 status = decode_op_hdr(xdr, OP_REMOVE);
4369 if (status)
4370 goto out;
4371 status = decode_change_info(xdr, cinfo);
4372 out:
4373 return status;
4374 }
4375
4376 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4377 struct nfs4_change_info *new_cinfo)
4378 {
4379 int status;
4380
4381 status = decode_op_hdr(xdr, OP_RENAME);
4382 if (status)
4383 goto out;
4384 if ((status = decode_change_info(xdr, old_cinfo)))
4385 goto out;
4386 status = decode_change_info(xdr, new_cinfo);
4387 out:
4388 return status;
4389 }
4390
4391 static int decode_renew(struct xdr_stream *xdr)
4392 {
4393 return decode_op_hdr(xdr, OP_RENEW);
4394 }
4395
4396 static int
4397 decode_restorefh(struct xdr_stream *xdr)
4398 {
4399 return decode_op_hdr(xdr, OP_RESTOREFH);
4400 }
4401
4402 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4403 size_t *acl_len)
4404 {
4405 __be32 *savep;
4406 uint32_t attrlen,
4407 bitmap[2] = {0};
4408 struct kvec *iov = req->rq_rcv_buf.head;
4409 int status;
4410
4411 *acl_len = 0;
4412 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4413 goto out;
4414 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4415 goto out;
4416 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4417 goto out;
4418
4419 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4420 return -EIO;
4421 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4422 size_t hdrlen;
4423 u32 recvd;
4424
4425 /* We ignore &savep and don't do consistency checks on
4426 * the attr length. Let userspace figure it out.... */
4427 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4428 recvd = req->rq_rcv_buf.len - hdrlen;
4429 if (attrlen > recvd) {
4430 dprintk("NFS: server cheating in getattr"
4431 " acl reply: attrlen %u > recvd %u\n",
4432 attrlen, recvd);
4433 return -EINVAL;
4434 }
4435 xdr_read_pages(xdr, attrlen);
4436 *acl_len = attrlen;
4437 } else
4438 status = -EOPNOTSUPP;
4439
4440 out:
4441 return status;
4442 }
4443
4444 static int
4445 decode_savefh(struct xdr_stream *xdr)
4446 {
4447 return decode_op_hdr(xdr, OP_SAVEFH);
4448 }
4449
4450 static int decode_setattr(struct xdr_stream *xdr)
4451 {
4452 __be32 *p;
4453 uint32_t bmlen;
4454 int status;
4455
4456 status = decode_op_hdr(xdr, OP_SETATTR);
4457 if (status)
4458 return status;
4459 p = xdr_inline_decode(xdr, 4);
4460 if (unlikely(!p))
4461 goto out_overflow;
4462 bmlen = be32_to_cpup(p);
4463 p = xdr_inline_decode(xdr, bmlen << 2);
4464 if (likely(p))
4465 return 0;
4466 out_overflow:
4467 print_overflow_msg(__func__, xdr);
4468 return -EIO;
4469 }
4470
4471 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
4472 {
4473 __be32 *p;
4474 uint32_t opnum;
4475 int32_t nfserr;
4476
4477 p = xdr_inline_decode(xdr, 8);
4478 if (unlikely(!p))
4479 goto out_overflow;
4480 opnum = be32_to_cpup(p++);
4481 if (opnum != OP_SETCLIENTID) {
4482 dprintk("nfs: decode_setclientid: Server returned operation"
4483 " %d\n", opnum);
4484 return -EIO;
4485 }
4486 nfserr = be32_to_cpup(p);
4487 if (nfserr == NFS_OK) {
4488 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4489 if (unlikely(!p))
4490 goto out_overflow;
4491 p = xdr_decode_hyper(p, &res->clientid);
4492 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
4493 } else if (nfserr == NFSERR_CLID_INUSE) {
4494 uint32_t len;
4495
4496 /* skip netid string */
4497 p = xdr_inline_decode(xdr, 4);
4498 if (unlikely(!p))
4499 goto out_overflow;
4500 len = be32_to_cpup(p);
4501 p = xdr_inline_decode(xdr, len);
4502 if (unlikely(!p))
4503 goto out_overflow;
4504
4505 /* skip uaddr string */
4506 p = xdr_inline_decode(xdr, 4);
4507 if (unlikely(!p))
4508 goto out_overflow;
4509 len = be32_to_cpup(p);
4510 p = xdr_inline_decode(xdr, len);
4511 if (unlikely(!p))
4512 goto out_overflow;
4513 return -NFSERR_CLID_INUSE;
4514 } else
4515 return nfs4_stat_to_errno(nfserr);
4516
4517 return 0;
4518 out_overflow:
4519 print_overflow_msg(__func__, xdr);
4520 return -EIO;
4521 }
4522
4523 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4524 {
4525 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4526 }
4527
4528 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4529 {
4530 __be32 *p;
4531 int status;
4532
4533 status = decode_op_hdr(xdr, OP_WRITE);
4534 if (status)
4535 return status;
4536
4537 p = xdr_inline_decode(xdr, 16);
4538 if (unlikely(!p))
4539 goto out_overflow;
4540 res->count = be32_to_cpup(p++);
4541 res->verf->committed = be32_to_cpup(p++);
4542 memcpy(res->verf->verifier, p, 8);
4543 return 0;
4544 out_overflow:
4545 print_overflow_msg(__func__, xdr);
4546 return -EIO;
4547 }
4548
4549 static int decode_delegreturn(struct xdr_stream *xdr)
4550 {
4551 return decode_op_hdr(xdr, OP_DELEGRETURN);
4552 }
4553
4554 #if defined(CONFIG_NFS_V4_1)
4555 static int decode_exchange_id(struct xdr_stream *xdr,
4556 struct nfs41_exchange_id_res *res)
4557 {
4558 __be32 *p;
4559 uint32_t dummy;
4560 char *dummy_str;
4561 int status;
4562 struct nfs_client *clp = res->client;
4563
4564 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4565 if (status)
4566 return status;
4567
4568 p = xdr_inline_decode(xdr, 8);
4569 if (unlikely(!p))
4570 goto out_overflow;
4571 xdr_decode_hyper(p, &clp->cl_ex_clid);
4572 p = xdr_inline_decode(xdr, 12);
4573 if (unlikely(!p))
4574 goto out_overflow;
4575 clp->cl_seqid = be32_to_cpup(p++);
4576 clp->cl_exchange_flags = be32_to_cpup(p++);
4577
4578 /* We ask for SP4_NONE */
4579 dummy = be32_to_cpup(p);
4580 if (dummy != SP4_NONE)
4581 return -EIO;
4582
4583 /* Throw away minor_id */
4584 p = xdr_inline_decode(xdr, 8);
4585 if (unlikely(!p))
4586 goto out_overflow;
4587
4588 /* Throw away Major id */
4589 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4590 if (unlikely(status))
4591 return status;
4592
4593 /* Throw away server_scope */
4594 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4595 if (unlikely(status))
4596 return status;
4597
4598 /* Throw away Implementation id array */
4599 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4600 if (unlikely(status))
4601 return status;
4602
4603 return 0;
4604 out_overflow:
4605 print_overflow_msg(__func__, xdr);
4606 return -EIO;
4607 }
4608
4609 static int decode_chan_attrs(struct xdr_stream *xdr,
4610 struct nfs4_channel_attrs *attrs)
4611 {
4612 __be32 *p;
4613 u32 nr_attrs;
4614
4615 p = xdr_inline_decode(xdr, 28);
4616 if (unlikely(!p))
4617 goto out_overflow;
4618 attrs->headerpadsz = be32_to_cpup(p++);
4619 attrs->max_rqst_sz = be32_to_cpup(p++);
4620 attrs->max_resp_sz = be32_to_cpup(p++);
4621 attrs->max_resp_sz_cached = be32_to_cpup(p++);
4622 attrs->max_ops = be32_to_cpup(p++);
4623 attrs->max_reqs = be32_to_cpup(p++);
4624 nr_attrs = be32_to_cpup(p);
4625 if (unlikely(nr_attrs > 1)) {
4626 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4627 __func__, nr_attrs);
4628 return -EINVAL;
4629 }
4630 if (nr_attrs == 1) {
4631 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
4632 if (unlikely(!p))
4633 goto out_overflow;
4634 }
4635 return 0;
4636 out_overflow:
4637 print_overflow_msg(__func__, xdr);
4638 return -EIO;
4639 }
4640
4641 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
4642 {
4643 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
4644 }
4645
4646 static int decode_create_session(struct xdr_stream *xdr,
4647 struct nfs41_create_session_res *res)
4648 {
4649 __be32 *p;
4650 int status;
4651 struct nfs_client *clp = res->client;
4652 struct nfs4_session *session = clp->cl_session;
4653
4654 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
4655 if (!status)
4656 status = decode_sessionid(xdr, &session->sess_id);
4657 if (unlikely(status))
4658 return status;
4659
4660 /* seqid, flags */
4661 p = xdr_inline_decode(xdr, 8);
4662 if (unlikely(!p))
4663 goto out_overflow;
4664 clp->cl_seqid = be32_to_cpup(p++);
4665 session->flags = be32_to_cpup(p);
4666
4667 /* Channel attributes */
4668 status = decode_chan_attrs(xdr, &session->fc_attrs);
4669 if (!status)
4670 status = decode_chan_attrs(xdr, &session->bc_attrs);
4671 return status;
4672 out_overflow:
4673 print_overflow_msg(__func__, xdr);
4674 return -EIO;
4675 }
4676
4677 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4678 {
4679 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4680 }
4681
4682 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
4683 {
4684 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
4685 }
4686 #endif /* CONFIG_NFS_V4_1 */
4687
4688 static int decode_sequence(struct xdr_stream *xdr,
4689 struct nfs4_sequence_res *res,
4690 struct rpc_rqst *rqstp)
4691 {
4692 #if defined(CONFIG_NFS_V4_1)
4693 struct nfs4_sessionid id;
4694 u32 dummy;
4695 int status;
4696 __be32 *p;
4697
4698 if (!res->sr_session)
4699 return 0;
4700
4701 status = decode_op_hdr(xdr, OP_SEQUENCE);
4702 if (!status)
4703 status = decode_sessionid(xdr, &id);
4704 if (unlikely(status))
4705 goto out_err;
4706
4707 /*
4708 * If the server returns different values for sessionID, slotID or
4709 * sequence number, the server is looney tunes.
4710 */
4711 status = -EREMOTEIO;
4712
4713 if (memcmp(id.data, res->sr_session->sess_id.data,
4714 NFS4_MAX_SESSIONID_LEN)) {
4715 dprintk("%s Invalid session id\n", __func__);
4716 goto out_err;
4717 }
4718
4719 p = xdr_inline_decode(xdr, 20);
4720 if (unlikely(!p))
4721 goto out_overflow;
4722
4723 /* seqid */
4724 dummy = be32_to_cpup(p++);
4725 if (dummy != res->sr_slot->seq_nr) {
4726 dprintk("%s Invalid sequence number\n", __func__);
4727 goto out_err;
4728 }
4729 /* slot id */
4730 dummy = be32_to_cpup(p++);
4731 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
4732 dprintk("%s Invalid slot id\n", __func__);
4733 goto out_err;
4734 }
4735 /* highest slot id - currently not processed */
4736 dummy = be32_to_cpup(p++);
4737 /* target highest slot id - currently not processed */
4738 dummy = be32_to_cpup(p++);
4739 /* result flags */
4740 res->sr_status_flags = be32_to_cpup(p);
4741 status = 0;
4742 out_err:
4743 res->sr_status = status;
4744 return status;
4745 out_overflow:
4746 print_overflow_msg(__func__, xdr);
4747 status = -EIO;
4748 goto out_err;
4749 #else /* CONFIG_NFS_V4_1 */
4750 return 0;
4751 #endif /* CONFIG_NFS_V4_1 */
4752 }
4753
4754 /*
4755 * END OF "GENERIC" DECODE ROUTINES.
4756 */
4757
4758 /*
4759 * Decode OPEN_DOWNGRADE response
4760 */
4761 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4762 {
4763 struct xdr_stream xdr;
4764 struct compound_hdr hdr;
4765 int status;
4766
4767 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4768 status = decode_compound_hdr(&xdr, &hdr);
4769 if (status)
4770 goto out;
4771 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4772 if (status)
4773 goto out;
4774 status = decode_putfh(&xdr);
4775 if (status)
4776 goto out;
4777 status = decode_open_downgrade(&xdr, res);
4778 if (status != 0)
4779 goto out;
4780 decode_getfattr(&xdr, res->fattr, res->server,
4781 !RPC_IS_ASYNC(rqstp->rq_task));
4782 out:
4783 return status;
4784 }
4785
4786 /*
4787 * Decode ACCESS response
4788 */
4789 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
4790 {
4791 struct xdr_stream xdr;
4792 struct compound_hdr hdr;
4793 int status;
4794
4795 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4796 status = decode_compound_hdr(&xdr, &hdr);
4797 if (status)
4798 goto out;
4799 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4800 if (status)
4801 goto out;
4802 status = decode_putfh(&xdr);
4803 if (status != 0)
4804 goto out;
4805 status = decode_access(&xdr, res);
4806 if (status != 0)
4807 goto out;
4808 decode_getfattr(&xdr, res->fattr, res->server,
4809 !RPC_IS_ASYNC(rqstp->rq_task));
4810 out:
4811 return status;
4812 }
4813
4814 /*
4815 * Decode LOOKUP response
4816 */
4817 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4818 {
4819 struct xdr_stream xdr;
4820 struct compound_hdr hdr;
4821 int status;
4822
4823 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4824 status = decode_compound_hdr(&xdr, &hdr);
4825 if (status)
4826 goto out;
4827 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4828 if (status)
4829 goto out;
4830 if ((status = decode_putfh(&xdr)) != 0)
4831 goto out;
4832 if ((status = decode_lookup(&xdr)) != 0)
4833 goto out;
4834 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4835 goto out;
4836 status = decode_getfattr(&xdr, res->fattr, res->server
4837 ,!RPC_IS_ASYNC(rqstp->rq_task));
4838 out:
4839 return status;
4840 }
4841
4842 /*
4843 * Decode LOOKUP_ROOT response
4844 */
4845 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4846 {
4847 struct xdr_stream xdr;
4848 struct compound_hdr hdr;
4849 int status;
4850
4851 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4852 status = decode_compound_hdr(&xdr, &hdr);
4853 if (status)
4854 goto out;
4855 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4856 if (status)
4857 goto out;
4858 if ((status = decode_putrootfh(&xdr)) != 0)
4859 goto out;
4860 if ((status = decode_getfh(&xdr, res->fh)) == 0)
4861 status = decode_getfattr(&xdr, res->fattr, res->server,
4862 !RPC_IS_ASYNC(rqstp->rq_task));
4863 out:
4864 return status;
4865 }
4866
4867 /*
4868 * Decode REMOVE response
4869 */
4870 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
4871 {
4872 struct xdr_stream xdr;
4873 struct compound_hdr hdr;
4874 int status;
4875
4876 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4877 status = decode_compound_hdr(&xdr, &hdr);
4878 if (status)
4879 goto out;
4880 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4881 if (status)
4882 goto out;
4883 if ((status = decode_putfh(&xdr)) != 0)
4884 goto out;
4885 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
4886 goto out;
4887 decode_getfattr(&xdr, res->dir_attr, res->server,
4888 !RPC_IS_ASYNC(rqstp->rq_task));
4889 out:
4890 return status;
4891 }
4892
4893 /*
4894 * Decode RENAME response
4895 */
4896 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res)
4897 {
4898 struct xdr_stream xdr;
4899 struct compound_hdr hdr;
4900 int status;
4901
4902 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4903 status = decode_compound_hdr(&xdr, &hdr);
4904 if (status)
4905 goto out;
4906 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4907 if (status)
4908 goto out;
4909 if ((status = decode_putfh(&xdr)) != 0)
4910 goto out;
4911 if ((status = decode_savefh(&xdr)) != 0)
4912 goto out;
4913 if ((status = decode_putfh(&xdr)) != 0)
4914 goto out;
4915 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4916 goto out;
4917 /* Current FH is target directory */
4918 if (decode_getfattr(&xdr, res->new_fattr, res->server,
4919 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4920 goto out;
4921 if ((status = decode_restorefh(&xdr)) != 0)
4922 goto out;
4923 decode_getfattr(&xdr, res->old_fattr, res->server,
4924 !RPC_IS_ASYNC(rqstp->rq_task));
4925 out:
4926 return status;
4927 }
4928
4929 /*
4930 * Decode LINK response
4931 */
4932 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4933 {
4934 struct xdr_stream xdr;
4935 struct compound_hdr hdr;
4936 int status;
4937
4938 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4939 status = decode_compound_hdr(&xdr, &hdr);
4940 if (status)
4941 goto out;
4942 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4943 if (status)
4944 goto out;
4945 if ((status = decode_putfh(&xdr)) != 0)
4946 goto out;
4947 if ((status = decode_savefh(&xdr)) != 0)
4948 goto out;
4949 if ((status = decode_putfh(&xdr)) != 0)
4950 goto out;
4951 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4952 goto out;
4953 /*
4954 * Note order: OP_LINK leaves the directory as the current
4955 * filehandle.
4956 */
4957 if (decode_getfattr(&xdr, res->dir_attr, res->server,
4958 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4959 goto out;
4960 if ((status = decode_restorefh(&xdr)) != 0)
4961 goto out;
4962 decode_getfattr(&xdr, res->fattr, res->server,
4963 !RPC_IS_ASYNC(rqstp->rq_task));
4964 out:
4965 return status;
4966 }
4967
4968 /*
4969 * Decode CREATE response
4970 */
4971 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4972 {
4973 struct xdr_stream xdr;
4974 struct compound_hdr hdr;
4975 int status;
4976
4977 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4978 status = decode_compound_hdr(&xdr, &hdr);
4979 if (status)
4980 goto out;
4981 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4982 if (status)
4983 goto out;
4984 if ((status = decode_putfh(&xdr)) != 0)
4985 goto out;
4986 if ((status = decode_savefh(&xdr)) != 0)
4987 goto out;
4988 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4989 goto out;
4990 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4991 goto out;
4992 if (decode_getfattr(&xdr, res->fattr, res->server,
4993 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4994 goto out;
4995 if ((status = decode_restorefh(&xdr)) != 0)
4996 goto out;
4997 decode_getfattr(&xdr, res->dir_fattr, res->server,
4998 !RPC_IS_ASYNC(rqstp->rq_task));
4999 out:
5000 return status;
5001 }
5002
5003 /*
5004 * Decode SYMLINK response
5005 */
5006 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
5007 {
5008 return nfs4_xdr_dec_create(rqstp, p, res);
5009 }
5010
5011 /*
5012 * Decode GETATTR response
5013 */
5014 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
5015 {
5016 struct xdr_stream xdr;
5017 struct compound_hdr hdr;
5018 int status;
5019
5020 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5021 status = decode_compound_hdr(&xdr, &hdr);
5022 if (status)
5023 goto out;
5024 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5025 if (status)
5026 goto out;
5027 status = decode_putfh(&xdr);
5028 if (status)
5029 goto out;
5030 status = decode_getfattr(&xdr, res->fattr, res->server,
5031 !RPC_IS_ASYNC(rqstp->rq_task));
5032 out:
5033 return status;
5034 }
5035
5036 /*
5037 * Encode an SETACL request
5038 */
5039 static int
5040 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
5041 {
5042 struct xdr_stream xdr;
5043 struct compound_hdr hdr = {
5044 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
5045 };
5046 int status;
5047
5048 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
5049 encode_compound_hdr(&xdr, req, &hdr);
5050 encode_sequence(&xdr, &args->seq_args, &hdr);
5051 encode_putfh(&xdr, args->fh, &hdr);
5052 status = encode_setacl(&xdr, args, &hdr);
5053 encode_nops(&hdr);
5054 return status;
5055 }
5056
5057 /*
5058 * Decode SETACL response
5059 */
5060 static int
5061 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
5062 struct nfs_setaclres *res)
5063 {
5064 struct xdr_stream xdr;
5065 struct compound_hdr hdr;
5066 int status;
5067
5068 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5069 status = decode_compound_hdr(&xdr, &hdr);
5070 if (status)
5071 goto out;
5072 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5073 if (status)
5074 goto out;
5075 status = decode_putfh(&xdr);
5076 if (status)
5077 goto out;
5078 status = decode_setattr(&xdr);
5079 out:
5080 return status;
5081 }
5082
5083 /*
5084 * Decode GETACL response
5085 */
5086 static int
5087 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
5088 struct nfs_getaclres *res)
5089 {
5090 struct xdr_stream xdr;
5091 struct compound_hdr hdr;
5092 int status;
5093
5094 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5095 status = decode_compound_hdr(&xdr, &hdr);
5096 if (status)
5097 goto out;
5098 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5099 if (status)
5100 goto out;
5101 status = decode_putfh(&xdr);
5102 if (status)
5103 goto out;
5104 status = decode_getacl(&xdr, rqstp, &res->acl_len);
5105
5106 out:
5107 return status;
5108 }
5109
5110 /*
5111 * Decode CLOSE response
5112 */
5113 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
5114 {
5115 struct xdr_stream xdr;
5116 struct compound_hdr hdr;
5117 int status;
5118
5119 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5120 status = decode_compound_hdr(&xdr, &hdr);
5121 if (status)
5122 goto out;
5123 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5124 if (status)
5125 goto out;
5126 status = decode_putfh(&xdr);
5127 if (status)
5128 goto out;
5129 status = decode_close(&xdr, res);
5130 if (status != 0)
5131 goto out;
5132 /*
5133 * Note: Server may do delete on close for this file
5134 * in which case the getattr call will fail with
5135 * an ESTALE error. Shouldn't be a problem,
5136 * though, since fattr->valid will remain unset.
5137 */
5138 decode_getfattr(&xdr, res->fattr, res->server,
5139 !RPC_IS_ASYNC(rqstp->rq_task));
5140 out:
5141 return status;
5142 }
5143
5144 /*
5145 * Decode OPEN response
5146 */
5147 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
5148 {
5149 struct xdr_stream xdr;
5150 struct compound_hdr hdr;
5151 int status;
5152
5153 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5154 status = decode_compound_hdr(&xdr, &hdr);
5155 if (status)
5156 goto out;
5157 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5158 if (status)
5159 goto out;
5160 status = decode_putfh(&xdr);
5161 if (status)
5162 goto out;
5163 status = decode_savefh(&xdr);
5164 if (status)
5165 goto out;
5166 status = decode_open(&xdr, res);
5167 if (status)
5168 goto out;
5169 if (decode_getfh(&xdr, &res->fh) != 0)
5170 goto out;
5171 if (decode_getfattr(&xdr, res->f_attr, res->server,
5172 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5173 goto out;
5174 if (decode_restorefh(&xdr) != 0)
5175 goto out;
5176 decode_getfattr(&xdr, res->dir_attr, res->server,
5177 !RPC_IS_ASYNC(rqstp->rq_task));
5178 out:
5179 return status;
5180 }
5181
5182 /*
5183 * Decode OPEN_CONFIRM response
5184 */
5185 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
5186 {
5187 struct xdr_stream xdr;
5188 struct compound_hdr hdr;
5189 int status;
5190
5191 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5192 status = decode_compound_hdr(&xdr, &hdr);
5193 if (status)
5194 goto out;
5195 status = decode_putfh(&xdr);
5196 if (status)
5197 goto out;
5198 status = decode_open_confirm(&xdr, res);
5199 out:
5200 return status;
5201 }
5202
5203 /*
5204 * Decode OPEN response
5205 */
5206 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
5207 {
5208 struct xdr_stream xdr;
5209 struct compound_hdr hdr;
5210 int status;
5211
5212 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5213 status = decode_compound_hdr(&xdr, &hdr);
5214 if (status)
5215 goto out;
5216 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5217 if (status)
5218 goto out;
5219 status = decode_putfh(&xdr);
5220 if (status)
5221 goto out;
5222 status = decode_open(&xdr, res);
5223 if (status)
5224 goto out;
5225 decode_getfattr(&xdr, res->f_attr, res->server,
5226 !RPC_IS_ASYNC(rqstp->rq_task));
5227 out:
5228 return status;
5229 }
5230
5231 /*
5232 * Decode SETATTR response
5233 */
5234 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
5235 {
5236 struct xdr_stream xdr;
5237 struct compound_hdr hdr;
5238 int status;
5239
5240 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5241 status = decode_compound_hdr(&xdr, &hdr);
5242 if (status)
5243 goto out;
5244 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5245 if (status)
5246 goto out;
5247 status = decode_putfh(&xdr);
5248 if (status)
5249 goto out;
5250 status = decode_setattr(&xdr);
5251 if (status)
5252 goto out;
5253 decode_getfattr(&xdr, res->fattr, res->server,
5254 !RPC_IS_ASYNC(rqstp->rq_task));
5255 out:
5256 return status;
5257 }
5258
5259 /*
5260 * Decode LOCK response
5261 */
5262 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
5263 {
5264 struct xdr_stream xdr;
5265 struct compound_hdr hdr;
5266 int status;
5267
5268 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5269 status = decode_compound_hdr(&xdr, &hdr);
5270 if (status)
5271 goto out;
5272 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5273 if (status)
5274 goto out;
5275 status = decode_putfh(&xdr);
5276 if (status)
5277 goto out;
5278 status = decode_lock(&xdr, res);
5279 out:
5280 return status;
5281 }
5282
5283 /*
5284 * Decode LOCKT response
5285 */
5286 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
5287 {
5288 struct xdr_stream xdr;
5289 struct compound_hdr hdr;
5290 int status;
5291
5292 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5293 status = decode_compound_hdr(&xdr, &hdr);
5294 if (status)
5295 goto out;
5296 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5297 if (status)
5298 goto out;
5299 status = decode_putfh(&xdr);
5300 if (status)
5301 goto out;
5302 status = decode_lockt(&xdr, res);
5303 out:
5304 return status;
5305 }
5306
5307 /*
5308 * Decode LOCKU response
5309 */
5310 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
5311 {
5312 struct xdr_stream xdr;
5313 struct compound_hdr hdr;
5314 int status;
5315
5316 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5317 status = decode_compound_hdr(&xdr, &hdr);
5318 if (status)
5319 goto out;
5320 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5321 if (status)
5322 goto out;
5323 status = decode_putfh(&xdr);
5324 if (status)
5325 goto out;
5326 status = decode_locku(&xdr, res);
5327 out:
5328 return status;
5329 }
5330
5331 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5332 {
5333 struct xdr_stream xdr;
5334 struct compound_hdr hdr;
5335 int status;
5336
5337 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5338 status = decode_compound_hdr(&xdr, &hdr);
5339 if (!status)
5340 status = decode_release_lockowner(&xdr);
5341 return status;
5342 }
5343
5344 /*
5345 * Decode READLINK response
5346 */
5347 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
5348 struct nfs4_readlink_res *res)
5349 {
5350 struct xdr_stream xdr;
5351 struct compound_hdr hdr;
5352 int status;
5353
5354 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5355 status = decode_compound_hdr(&xdr, &hdr);
5356 if (status)
5357 goto out;
5358 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5359 if (status)
5360 goto out;
5361 status = decode_putfh(&xdr);
5362 if (status)
5363 goto out;
5364 status = decode_readlink(&xdr, rqstp);
5365 out:
5366 return status;
5367 }
5368
5369 /*
5370 * Decode READDIR response
5371 */
5372 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
5373 {
5374 struct xdr_stream xdr;
5375 struct compound_hdr hdr;
5376 int status;
5377
5378 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5379 status = decode_compound_hdr(&xdr, &hdr);
5380 if (status)
5381 goto out;
5382 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5383 if (status)
5384 goto out;
5385 status = decode_putfh(&xdr);
5386 if (status)
5387 goto out;
5388 status = decode_readdir(&xdr, rqstp, res);
5389 out:
5390 return status;
5391 }
5392
5393 /*
5394 * Decode Read response
5395 */
5396 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
5397 {
5398 struct xdr_stream xdr;
5399 struct compound_hdr hdr;
5400 int status;
5401
5402 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5403 status = decode_compound_hdr(&xdr, &hdr);
5404 if (status)
5405 goto out;
5406 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5407 if (status)
5408 goto out;
5409 status = decode_putfh(&xdr);
5410 if (status)
5411 goto out;
5412 status = decode_read(&xdr, rqstp, res);
5413 if (!status)
5414 status = res->count;
5415 out:
5416 return status;
5417 }
5418
5419 /*
5420 * Decode WRITE response
5421 */
5422 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5423 {
5424 struct xdr_stream xdr;
5425 struct compound_hdr hdr;
5426 int status;
5427
5428 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5429 status = decode_compound_hdr(&xdr, &hdr);
5430 if (status)
5431 goto out;
5432 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5433 if (status)
5434 goto out;
5435 status = decode_putfh(&xdr);
5436 if (status)
5437 goto out;
5438 status = decode_write(&xdr, res);
5439 if (status)
5440 goto out;
5441 decode_getfattr(&xdr, res->fattr, res->server,
5442 !RPC_IS_ASYNC(rqstp->rq_task));
5443 if (!status)
5444 status = res->count;
5445 out:
5446 return status;
5447 }
5448
5449 /*
5450 * Decode COMMIT response
5451 */
5452 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5453 {
5454 struct xdr_stream xdr;
5455 struct compound_hdr hdr;
5456 int status;
5457
5458 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5459 status = decode_compound_hdr(&xdr, &hdr);
5460 if (status)
5461 goto out;
5462 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5463 if (status)
5464 goto out;
5465 status = decode_putfh(&xdr);
5466 if (status)
5467 goto out;
5468 status = decode_commit(&xdr, res);
5469 if (status)
5470 goto out;
5471 decode_getfattr(&xdr, res->fattr, res->server,
5472 !RPC_IS_ASYNC(rqstp->rq_task));
5473 out:
5474 return status;
5475 }
5476
5477 /*
5478 * Decode FSINFO response
5479 */
5480 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5481 struct nfs4_fsinfo_res *res)
5482 {
5483 struct xdr_stream xdr;
5484 struct compound_hdr hdr;
5485 int status;
5486
5487 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5488 status = decode_compound_hdr(&xdr, &hdr);
5489 if (!status)
5490 status = decode_sequence(&xdr, &res->seq_res, req);
5491 if (!status)
5492 status = decode_putfh(&xdr);
5493 if (!status)
5494 status = decode_fsinfo(&xdr, res->fsinfo);
5495 return status;
5496 }
5497
5498 /*
5499 * Decode PATHCONF response
5500 */
5501 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5502 struct nfs4_pathconf_res *res)
5503 {
5504 struct xdr_stream xdr;
5505 struct compound_hdr hdr;
5506 int status;
5507
5508 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5509 status = decode_compound_hdr(&xdr, &hdr);
5510 if (!status)
5511 status = decode_sequence(&xdr, &res->seq_res, req);
5512 if (!status)
5513 status = decode_putfh(&xdr);
5514 if (!status)
5515 status = decode_pathconf(&xdr, res->pathconf);
5516 return status;
5517 }
5518
5519 /*
5520 * Decode STATFS response
5521 */
5522 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5523 struct nfs4_statfs_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 status = decode_sequence(&xdr, &res->seq_res, req);
5533 if (!status)
5534 status = decode_putfh(&xdr);
5535 if (!status)
5536 status = decode_statfs(&xdr, res->fsstat);
5537 return status;
5538 }
5539
5540 /*
5541 * Decode GETATTR_BITMAP response
5542 */
5543 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
5544 {
5545 struct xdr_stream xdr;
5546 struct compound_hdr hdr;
5547 int status;
5548
5549 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5550 status = decode_compound_hdr(&xdr, &hdr);
5551 if (status)
5552 goto out;
5553 status = decode_sequence(&xdr, &res->seq_res, req);
5554 if (status)
5555 goto out;
5556 if ((status = decode_putfh(&xdr)) != 0)
5557 goto out;
5558 status = decode_server_caps(&xdr, res);
5559 out:
5560 return status;
5561 }
5562
5563 /*
5564 * Decode RENEW response
5565 */
5566 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5567 {
5568 struct xdr_stream xdr;
5569 struct compound_hdr hdr;
5570 int status;
5571
5572 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5573 status = decode_compound_hdr(&xdr, &hdr);
5574 if (!status)
5575 status = decode_renew(&xdr);
5576 return status;
5577 }
5578
5579 /*
5580 * Decode SETCLIENTID response
5581 */
5582 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5583 struct nfs4_setclientid_res *res)
5584 {
5585 struct xdr_stream xdr;
5586 struct compound_hdr hdr;
5587 int status;
5588
5589 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5590 status = decode_compound_hdr(&xdr, &hdr);
5591 if (!status)
5592 status = decode_setclientid(&xdr, res);
5593 return status;
5594 }
5595
5596 /*
5597 * Decode SETCLIENTID_CONFIRM response
5598 */
5599 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
5600 {
5601 struct xdr_stream xdr;
5602 struct compound_hdr hdr;
5603 int status;
5604
5605 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5606 status = decode_compound_hdr(&xdr, &hdr);
5607 if (!status)
5608 status = decode_setclientid_confirm(&xdr);
5609 if (!status)
5610 status = decode_putrootfh(&xdr);
5611 if (!status)
5612 status = decode_fsinfo(&xdr, fsinfo);
5613 return status;
5614 }
5615
5616 /*
5617 * Decode DELEGRETURN response
5618 */
5619 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
5620 {
5621 struct xdr_stream xdr;
5622 struct compound_hdr hdr;
5623 int status;
5624
5625 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5626 status = decode_compound_hdr(&xdr, &hdr);
5627 if (status)
5628 goto out;
5629 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5630 if (status)
5631 goto out;
5632 status = decode_putfh(&xdr);
5633 if (status != 0)
5634 goto out;
5635 status = decode_delegreturn(&xdr);
5636 if (status != 0)
5637 goto out;
5638 decode_getfattr(&xdr, res->fattr, res->server,
5639 !RPC_IS_ASYNC(rqstp->rq_task));
5640 out:
5641 return status;
5642 }
5643
5644 /*
5645 * Decode FS_LOCATIONS response
5646 */
5647 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5648 struct nfs4_fs_locations_res *res)
5649 {
5650 struct xdr_stream xdr;
5651 struct compound_hdr hdr;
5652 int status;
5653
5654 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5655 status = decode_compound_hdr(&xdr, &hdr);
5656 if (status)
5657 goto out;
5658 status = decode_sequence(&xdr, &res->seq_res, req);
5659 if (status)
5660 goto out;
5661 if ((status = decode_putfh(&xdr)) != 0)
5662 goto out;
5663 if ((status = decode_lookup(&xdr)) != 0)
5664 goto out;
5665 xdr_enter_page(&xdr, PAGE_SIZE);
5666 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
5667 res->fs_locations->server,
5668 !RPC_IS_ASYNC(req->rq_task));
5669 out:
5670 return status;
5671 }
5672
5673 #if defined(CONFIG_NFS_V4_1)
5674 /*
5675 * Decode EXCHANGE_ID response
5676 */
5677 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5678 void *res)
5679 {
5680 struct xdr_stream xdr;
5681 struct compound_hdr hdr;
5682 int status;
5683
5684 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5685 status = decode_compound_hdr(&xdr, &hdr);
5686 if (!status)
5687 status = decode_exchange_id(&xdr, res);
5688 return status;
5689 }
5690
5691 /*
5692 * Decode CREATE_SESSION response
5693 */
5694 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5695 struct nfs41_create_session_res *res)
5696 {
5697 struct xdr_stream xdr;
5698 struct compound_hdr hdr;
5699 int status;
5700
5701 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5702 status = decode_compound_hdr(&xdr, &hdr);
5703 if (!status)
5704 status = decode_create_session(&xdr, res);
5705 return status;
5706 }
5707
5708 /*
5709 * Decode DESTROY_SESSION response
5710 */
5711 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5712 void *dummy)
5713 {
5714 struct xdr_stream xdr;
5715 struct compound_hdr hdr;
5716 int status;
5717
5718 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5719 status = decode_compound_hdr(&xdr, &hdr);
5720 if (!status)
5721 status = decode_destroy_session(&xdr, dummy);
5722 return status;
5723 }
5724
5725 /*
5726 * Decode SEQUENCE response
5727 */
5728 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5729 struct nfs4_sequence_res *res)
5730 {
5731 struct xdr_stream xdr;
5732 struct compound_hdr hdr;
5733 int status;
5734
5735 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5736 status = decode_compound_hdr(&xdr, &hdr);
5737 if (!status)
5738 status = decode_sequence(&xdr, res, rqstp);
5739 return status;
5740 }
5741
5742 /*
5743 * Decode GET_LEASE_TIME response
5744 */
5745 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5746 struct nfs4_get_lease_time_res *res)
5747 {
5748 struct xdr_stream xdr;
5749 struct compound_hdr hdr;
5750 int status;
5751
5752 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5753 status = decode_compound_hdr(&xdr, &hdr);
5754 if (!status)
5755 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
5756 if (!status)
5757 status = decode_putrootfh(&xdr);
5758 if (!status)
5759 status = decode_fsinfo(&xdr, res->lr_fsinfo);
5760 return status;
5761 }
5762
5763 /*
5764 * Decode RECLAIM_COMPLETE response
5765 */
5766 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
5767 struct nfs41_reclaim_complete_res *res)
5768 {
5769 struct xdr_stream xdr;
5770 struct compound_hdr hdr;
5771 int status;
5772
5773 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5774 status = decode_compound_hdr(&xdr, &hdr);
5775 if (!status)
5776 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5777 if (!status)
5778 status = decode_reclaim_complete(&xdr, (void *)NULL);
5779 return status;
5780 }
5781 #endif /* CONFIG_NFS_V4_1 */
5782
5783 __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
5784 struct nfs_server *server, int plus)
5785 {
5786 uint32_t bitmap[2] = {0};
5787 uint32_t len;
5788 __be32 *p = xdr_inline_decode(xdr, 4);
5789 if (unlikely(!p))
5790 goto out_overflow;
5791 if (!ntohl(*p++)) {
5792 p = xdr_inline_decode(xdr, 4);
5793 if (unlikely(!p))
5794 goto out_overflow;
5795 if (!ntohl(*p++))
5796 return ERR_PTR(-EAGAIN);
5797 entry->eof = 1;
5798 return ERR_PTR(-EBADCOOKIE);
5799 }
5800
5801 p = xdr_inline_decode(xdr, 12);
5802 if (unlikely(!p))
5803 goto out_overflow;
5804 entry->prev_cookie = entry->cookie;
5805 p = xdr_decode_hyper(p, &entry->cookie);
5806 entry->len = ntohl(*p++);
5807
5808 p = xdr_inline_decode(xdr, entry->len + 4);
5809 if (unlikely(!p))
5810 goto out_overflow;
5811 entry->name = (const char *) p;
5812 p += XDR_QUADLEN(entry->len);
5813
5814 /*
5815 * In case the server doesn't return an inode number,
5816 * we fake one here. (We don't use inode number 0,
5817 * since glibc seems to choke on it...)
5818 */
5819 entry->ino = 1;
5820
5821 len = ntohl(*p++); /* bitmap length */
5822 if (len-- > 0) {
5823 p = xdr_inline_decode(xdr, 4);
5824 if (unlikely(!p))
5825 goto out_overflow;
5826 bitmap[0] = ntohl(*p++);
5827 if (len-- > 0) {
5828 p = xdr_inline_decode(xdr, 4);
5829 if (unlikely(!p))
5830 goto out_overflow;
5831 bitmap[1] = ntohl(*p++);
5832 p += len;
5833 }
5834 }
5835 p = xdr_inline_decode(xdr, 4);
5836 if (unlikely(!p))
5837 goto out_overflow;
5838 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
5839 if (len > 0) {
5840 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0)
5841 goto out_overflow;
5842 if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
5843 entry->ino = entry->fattr->fileid;
5844 }
5845
5846 p = xdr_inline_peek(xdr, 8);
5847 if (p != NULL)
5848 entry->eof = !p[0] && p[1];
5849 else
5850 entry->eof = 0;
5851
5852 return p;
5853
5854 out_overflow:
5855 print_overflow_msg(__func__, xdr);
5856 return ERR_PTR(-EIO);
5857 }
5858
5859 /*
5860 * We need to translate between nfs status return values and
5861 * the local errno values which may not be the same.
5862 */
5863 static struct {
5864 int stat;
5865 int errno;
5866 } nfs_errtbl[] = {
5867 { NFS4_OK, 0 },
5868 { NFS4ERR_PERM, -EPERM },
5869 { NFS4ERR_NOENT, -ENOENT },
5870 { NFS4ERR_IO, -errno_NFSERR_IO},
5871 { NFS4ERR_NXIO, -ENXIO },
5872 { NFS4ERR_ACCESS, -EACCES },
5873 { NFS4ERR_EXIST, -EEXIST },
5874 { NFS4ERR_XDEV, -EXDEV },
5875 { NFS4ERR_NOTDIR, -ENOTDIR },
5876 { NFS4ERR_ISDIR, -EISDIR },
5877 { NFS4ERR_INVAL, -EINVAL },
5878 { NFS4ERR_FBIG, -EFBIG },
5879 { NFS4ERR_NOSPC, -ENOSPC },
5880 { NFS4ERR_ROFS, -EROFS },
5881 { NFS4ERR_MLINK, -EMLINK },
5882 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
5883 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
5884 { NFS4ERR_DQUOT, -EDQUOT },
5885 { NFS4ERR_STALE, -ESTALE },
5886 { NFS4ERR_BADHANDLE, -EBADHANDLE },
5887 { NFS4ERR_BADOWNER, -EINVAL },
5888 { NFS4ERR_BADNAME, -EINVAL },
5889 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
5890 { NFS4ERR_NOTSUPP, -ENOTSUPP },
5891 { NFS4ERR_TOOSMALL, -ETOOSMALL },
5892 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
5893 { NFS4ERR_BADTYPE, -EBADTYPE },
5894 { NFS4ERR_LOCKED, -EAGAIN },
5895 { NFS4ERR_SYMLINK, -ELOOP },
5896 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
5897 { NFS4ERR_DEADLOCK, -EDEADLK },
5898 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
5899 * to be handled by a
5900 * middle-layer.
5901 */
5902 { -1, -EIO }
5903 };
5904
5905 /*
5906 * Convert an NFS error code to a local one.
5907 * This one is used jointly by NFSv2 and NFSv3.
5908 */
5909 static int
5910 nfs4_stat_to_errno(int stat)
5911 {
5912 int i;
5913 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
5914 if (nfs_errtbl[i].stat == stat)
5915 return nfs_errtbl[i].errno;
5916 }
5917 if (stat <= 10000 || stat > 10100) {
5918 /* The server is looney tunes. */
5919 return -EREMOTEIO;
5920 }
5921 /* If we cannot translate the error, the recovery routines should
5922 * handle it.
5923 * Note: remaining NFSv4 error codes have values > 10000, so should
5924 * not conflict with native Linux error codes.
5925 */
5926 return -stat;
5927 }
5928
5929 #define PROC(proc, argtype, restype) \
5930 [NFSPROC4_CLNT_##proc] = { \
5931 .p_proc = NFSPROC4_COMPOUND, \
5932 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
5933 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
5934 .p_arglen = NFS4_##argtype##_sz, \
5935 .p_replen = NFS4_##restype##_sz, \
5936 .p_statidx = NFSPROC4_CLNT_##proc, \
5937 .p_name = #proc, \
5938 }
5939
5940 struct rpc_procinfo nfs4_procedures[] = {
5941 PROC(READ, enc_read, dec_read),
5942 PROC(WRITE, enc_write, dec_write),
5943 PROC(COMMIT, enc_commit, dec_commit),
5944 PROC(OPEN, enc_open, dec_open),
5945 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
5946 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
5947 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
5948 PROC(CLOSE, enc_close, dec_close),
5949 PROC(SETATTR, enc_setattr, dec_setattr),
5950 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
5951 PROC(RENEW, enc_renew, dec_renew),
5952 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
5953 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
5954 PROC(LOCK, enc_lock, dec_lock),
5955 PROC(LOCKT, enc_lockt, dec_lockt),
5956 PROC(LOCKU, enc_locku, dec_locku),
5957 PROC(ACCESS, enc_access, dec_access),
5958 PROC(GETATTR, enc_getattr, dec_getattr),
5959 PROC(LOOKUP, enc_lookup, dec_lookup),
5960 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
5961 PROC(REMOVE, enc_remove, dec_remove),
5962 PROC(RENAME, enc_rename, dec_rename),
5963 PROC(LINK, enc_link, dec_link),
5964 PROC(SYMLINK, enc_symlink, dec_symlink),
5965 PROC(CREATE, enc_create, dec_create),
5966 PROC(PATHCONF, enc_pathconf, dec_pathconf),
5967 PROC(STATFS, enc_statfs, dec_statfs),
5968 PROC(READLINK, enc_readlink, dec_readlink),
5969 PROC(READDIR, enc_readdir, dec_readdir),
5970 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
5971 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
5972 PROC(GETACL, enc_getacl, dec_getacl),
5973 PROC(SETACL, enc_setacl, dec_setacl),
5974 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
5975 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
5976 #if defined(CONFIG_NFS_V4_1)
5977 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
5978 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
5979 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
5980 PROC(SEQUENCE, enc_sequence, dec_sequence),
5981 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5982 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
5983 #endif /* CONFIG_NFS_V4_1 */
5984 };
5985
5986 struct rpc_version nfs_version4 = {
5987 .number = 4,
5988 .nrprocs = ARRAY_SIZE(nfs4_procedures),
5989 .procs = nfs4_procedures
5990 };
5991
5992 /*
5993 * Local variables:
5994 * c-basic-offset: 8
5995 * End:
5996 */
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