projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'sunrpc_cache-for-2.6.32' into nfs-for-2.6.32
[deliverable/linux.git] / fs / nfs / nfs4xdr.c
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/slab.h>
42 #include <linux/utsname.h>
43 #include <linux/errno.h>
44 #include <linux/string.h>
45 #include <linux/in.h>
46 #include <linux/pagemap.h>
47 #include <linux/proc_fs.h>
48 #include <linux/kdev_t.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/nfs.h>
51 #include <linux/nfs4.h>
52 #include <linux/nfs_fs.h>
53 #include <linux/nfs_idmap.h>
54 #include "nfs4_fs.h"
55
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)
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_lock_maxsz (op_encode_hdr_maxsz + \
206 7 + \
207 1 + encode_stateid_maxsz + 8)
208 #define decode_lock_denied_maxsz \
209 (8 + decode_lockowner_maxsz)
210 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
211 decode_lock_denied_maxsz)
212 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 12)
213 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
214 decode_lock_denied_maxsz)
215 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
216 encode_stateid_maxsz + \
217 4)
218 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
219 decode_stateid_maxsz)
220 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
221 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
222 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
223 1 + nfs4_name_maxsz + \
224 1 + \
225 nfs4_fattr_maxsz)
226 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
227 #define encode_create_maxsz (op_encode_hdr_maxsz + \
228 1 + 2 + nfs4_name_maxsz + \
229 encode_attrs_maxsz)
230 #define decode_create_maxsz (op_decode_hdr_maxsz + \
231 decode_change_info_maxsz + \
232 nfs4_fattr_bitmap_maxsz)
233 #define encode_statfs_maxsz (encode_getattr_maxsz)
234 #define decode_statfs_maxsz (decode_getattr_maxsz)
235 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
236 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
237 #define encode_getacl_maxsz (encode_getattr_maxsz)
238 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
239 nfs4_fattr_bitmap_maxsz + 1)
240 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
241 encode_stateid_maxsz + 3)
242 #define decode_setacl_maxsz (decode_setattr_maxsz)
243 #define encode_fs_locations_maxsz \
244 (encode_getattr_maxsz)
245 #define decode_fs_locations_maxsz \
246 (0)
247
248 #if defined(CONFIG_NFS_V4_1)
249 #define NFS4_MAX_MACHINE_NAME_LEN (64)
250
251 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
252 encode_verifier_maxsz + \
253 1 /* co_ownerid.len */ + \
254 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
255 1 /* flags */ + \
256 1 /* spa_how */ + \
257 0 /* SP4_NONE (for now) */ + \
258 1 /* zero implemetation id array */)
259 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
260 2 /* eir_clientid */ + \
261 1 /* eir_sequenceid */ + \
262 1 /* eir_flags */ + \
263 1 /* spr_how */ + \
264 0 /* SP4_NONE (for now) */ + \
265 2 /* eir_server_owner.so_minor_id */ + \
266 /* eir_server_owner.so_major_id<> */ \
267 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
268 /* eir_server_scope<> */ \
269 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
270 1 /* eir_server_impl_id array length */ + \
271 0 /* ignored eir_server_impl_id contents */)
272 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
273 #define decode_channel_attrs_maxsz (6 + \
274 1 /* ca_rdma_ird.len */ + \
275 1 /* ca_rdma_ird */)
276 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
277 2 /* csa_clientid */ + \
278 1 /* csa_sequence */ + \
279 1 /* csa_flags */ + \
280 encode_channel_attrs_maxsz + \
281 encode_channel_attrs_maxsz + \
282 1 /* csa_cb_program */ + \
283 1 /* csa_sec_parms.len (1) */ + \
284 1 /* cb_secflavor (AUTH_SYS) */ + \
285 1 /* stamp */ + \
286 1 /* machinename.len */ + \
287 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
288 1 /* uid */ + \
289 1 /* gid */ + \
290 1 /* gids.len (0) */)
291 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
292 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
293 1 /* csr_sequence */ + \
294 1 /* csr_flags */ + \
295 decode_channel_attrs_maxsz + \
296 decode_channel_attrs_maxsz)
297 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
298 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
299 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
300 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
301 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
302 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
303 #else /* CONFIG_NFS_V4_1 */
304 #define encode_sequence_maxsz 0
305 #define decode_sequence_maxsz 0
306 #endif /* CONFIG_NFS_V4_1 */
307
308 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
309 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
310 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
311 encode_sequence_maxsz + \
312 encode_putfh_maxsz + \
313 encode_read_maxsz)
314 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
315 decode_sequence_maxsz + \
316 decode_putfh_maxsz + \
317 decode_read_maxsz)
318 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
319 encode_sequence_maxsz + \
320 encode_putfh_maxsz + \
321 encode_readlink_maxsz)
322 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
323 decode_sequence_maxsz + \
324 decode_putfh_maxsz + \
325 decode_readlink_maxsz)
326 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
327 encode_sequence_maxsz + \
328 encode_putfh_maxsz + \
329 encode_readdir_maxsz)
330 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
331 decode_sequence_maxsz + \
332 decode_putfh_maxsz + \
333 decode_readdir_maxsz)
334 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
335 encode_sequence_maxsz + \
336 encode_putfh_maxsz + \
337 encode_write_maxsz + \
338 encode_getattr_maxsz)
339 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
340 decode_sequence_maxsz + \
341 decode_putfh_maxsz + \
342 decode_write_maxsz + \
343 decode_getattr_maxsz)
344 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
345 encode_sequence_maxsz + \
346 encode_putfh_maxsz + \
347 encode_commit_maxsz + \
348 encode_getattr_maxsz)
349 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
350 decode_sequence_maxsz + \
351 decode_putfh_maxsz + \
352 decode_commit_maxsz + \
353 decode_getattr_maxsz)
354 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
355 encode_sequence_maxsz + \
356 encode_putfh_maxsz + \
357 encode_savefh_maxsz + \
358 encode_open_maxsz + \
359 encode_getfh_maxsz + \
360 encode_getattr_maxsz + \
361 encode_restorefh_maxsz + \
362 encode_getattr_maxsz)
363 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
364 decode_sequence_maxsz + \
365 decode_putfh_maxsz + \
366 decode_savefh_maxsz + \
367 decode_open_maxsz + \
368 decode_getfh_maxsz + \
369 decode_getattr_maxsz + \
370 decode_restorefh_maxsz + \
371 decode_getattr_maxsz)
372 #define NFS4_enc_open_confirm_sz \
373 (compound_encode_hdr_maxsz + \
374 encode_putfh_maxsz + \
375 encode_open_confirm_maxsz)
376 #define NFS4_dec_open_confirm_sz \
377 (compound_decode_hdr_maxsz + \
378 decode_putfh_maxsz + \
379 decode_open_confirm_maxsz)
380 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
381 encode_sequence_maxsz + \
382 encode_putfh_maxsz + \
383 encode_open_maxsz + \
384 encode_getattr_maxsz)
385 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
386 decode_sequence_maxsz + \
387 decode_putfh_maxsz + \
388 decode_open_maxsz + \
389 decode_getattr_maxsz)
390 #define NFS4_enc_open_downgrade_sz \
391 (compound_encode_hdr_maxsz + \
392 encode_sequence_maxsz + \
393 encode_putfh_maxsz + \
394 encode_open_downgrade_maxsz + \
395 encode_getattr_maxsz)
396 #define NFS4_dec_open_downgrade_sz \
397 (compound_decode_hdr_maxsz + \
398 decode_sequence_maxsz + \
399 decode_putfh_maxsz + \
400 decode_open_downgrade_maxsz + \
401 decode_getattr_maxsz)
402 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
403 encode_sequence_maxsz + \
404 encode_putfh_maxsz + \
405 encode_close_maxsz + \
406 encode_getattr_maxsz)
407 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
408 decode_sequence_maxsz + \
409 decode_putfh_maxsz + \
410 decode_close_maxsz + \
411 decode_getattr_maxsz)
412 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
413 encode_sequence_maxsz + \
414 encode_putfh_maxsz + \
415 encode_setattr_maxsz + \
416 encode_getattr_maxsz)
417 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
418 decode_sequence_maxsz + \
419 decode_putfh_maxsz + \
420 decode_setattr_maxsz + \
421 decode_getattr_maxsz)
422 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
423 encode_sequence_maxsz + \
424 encode_putfh_maxsz + \
425 encode_fsinfo_maxsz)
426 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
427 decode_sequence_maxsz + \
428 decode_putfh_maxsz + \
429 decode_fsinfo_maxsz)
430 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
431 encode_renew_maxsz)
432 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
433 decode_renew_maxsz)
434 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
435 encode_setclientid_maxsz)
436 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
437 decode_setclientid_maxsz)
438 #define NFS4_enc_setclientid_confirm_sz \
439 (compound_encode_hdr_maxsz + \
440 encode_setclientid_confirm_maxsz + \
441 encode_putrootfh_maxsz + \
442 encode_fsinfo_maxsz)
443 #define NFS4_dec_setclientid_confirm_sz \
444 (compound_decode_hdr_maxsz + \
445 decode_setclientid_confirm_maxsz + \
446 decode_putrootfh_maxsz + \
447 decode_fsinfo_maxsz)
448 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
449 encode_sequence_maxsz + \
450 encode_putfh_maxsz + \
451 encode_lock_maxsz)
452 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
453 decode_sequence_maxsz + \
454 decode_putfh_maxsz + \
455 decode_lock_maxsz)
456 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
457 encode_sequence_maxsz + \
458 encode_putfh_maxsz + \
459 encode_lockt_maxsz)
460 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
461 decode_sequence_maxsz + \
462 decode_putfh_maxsz + \
463 decode_lockt_maxsz)
464 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
465 encode_sequence_maxsz + \
466 encode_putfh_maxsz + \
467 encode_locku_maxsz)
468 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
469 decode_sequence_maxsz + \
470 decode_putfh_maxsz + \
471 decode_locku_maxsz)
472 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
473 encode_sequence_maxsz + \
474 encode_putfh_maxsz + \
475 encode_access_maxsz + \
476 encode_getattr_maxsz)
477 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
478 decode_sequence_maxsz + \
479 decode_putfh_maxsz + \
480 decode_access_maxsz + \
481 decode_getattr_maxsz)
482 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
483 encode_sequence_maxsz + \
484 encode_putfh_maxsz + \
485 encode_getattr_maxsz)
486 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
487 decode_sequence_maxsz + \
488 decode_putfh_maxsz + \
489 decode_getattr_maxsz)
490 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
491 encode_sequence_maxsz + \
492 encode_putfh_maxsz + \
493 encode_lookup_maxsz + \
494 encode_getattr_maxsz + \
495 encode_getfh_maxsz)
496 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
497 decode_sequence_maxsz + \
498 decode_putfh_maxsz + \
499 decode_lookup_maxsz + \
500 decode_getattr_maxsz + \
501 decode_getfh_maxsz)
502 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
503 encode_sequence_maxsz + \
504 encode_putrootfh_maxsz + \
505 encode_getattr_maxsz + \
506 encode_getfh_maxsz)
507 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
508 decode_sequence_maxsz + \
509 decode_putrootfh_maxsz + \
510 decode_getattr_maxsz + \
511 decode_getfh_maxsz)
512 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
513 encode_sequence_maxsz + \
514 encode_putfh_maxsz + \
515 encode_remove_maxsz + \
516 encode_getattr_maxsz)
517 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
518 decode_sequence_maxsz + \
519 decode_putfh_maxsz + \
520 decode_remove_maxsz + \
521 decode_getattr_maxsz)
522 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
523 encode_sequence_maxsz + \
524 encode_putfh_maxsz + \
525 encode_savefh_maxsz + \
526 encode_putfh_maxsz + \
527 encode_rename_maxsz + \
528 encode_getattr_maxsz + \
529 encode_restorefh_maxsz + \
530 encode_getattr_maxsz)
531 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
532 decode_sequence_maxsz + \
533 decode_putfh_maxsz + \
534 decode_savefh_maxsz + \
535 decode_putfh_maxsz + \
536 decode_rename_maxsz + \
537 decode_getattr_maxsz + \
538 decode_restorefh_maxsz + \
539 decode_getattr_maxsz)
540 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
541 encode_sequence_maxsz + \
542 encode_putfh_maxsz + \
543 encode_savefh_maxsz + \
544 encode_putfh_maxsz + \
545 encode_link_maxsz + \
546 decode_getattr_maxsz + \
547 encode_restorefh_maxsz + \
548 decode_getattr_maxsz)
549 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
550 decode_sequence_maxsz + \
551 decode_putfh_maxsz + \
552 decode_savefh_maxsz + \
553 decode_putfh_maxsz + \
554 decode_link_maxsz + \
555 decode_getattr_maxsz + \
556 decode_restorefh_maxsz + \
557 decode_getattr_maxsz)
558 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
559 encode_sequence_maxsz + \
560 encode_putfh_maxsz + \
561 encode_symlink_maxsz + \
562 encode_getattr_maxsz + \
563 encode_getfh_maxsz)
564 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
565 decode_sequence_maxsz + \
566 decode_putfh_maxsz + \
567 decode_symlink_maxsz + \
568 decode_getattr_maxsz + \
569 decode_getfh_maxsz)
570 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
571 encode_sequence_maxsz + \
572 encode_putfh_maxsz + \
573 encode_savefh_maxsz + \
574 encode_create_maxsz + \
575 encode_getfh_maxsz + \
576 encode_getattr_maxsz + \
577 encode_restorefh_maxsz + \
578 encode_getattr_maxsz)
579 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
580 decode_sequence_maxsz + \
581 decode_putfh_maxsz + \
582 decode_savefh_maxsz + \
583 decode_create_maxsz + \
584 decode_getfh_maxsz + \
585 decode_getattr_maxsz + \
586 decode_restorefh_maxsz + \
587 decode_getattr_maxsz)
588 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
589 encode_sequence_maxsz + \
590 encode_putfh_maxsz + \
591 encode_getattr_maxsz)
592 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
593 decode_sequence_maxsz + \
594 decode_putfh_maxsz + \
595 decode_getattr_maxsz)
596 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
597 encode_sequence_maxsz + \
598 encode_putfh_maxsz + \
599 encode_statfs_maxsz)
600 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
601 decode_sequence_maxsz + \
602 decode_putfh_maxsz + \
603 decode_statfs_maxsz)
604 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
605 encode_sequence_maxsz + \
606 encode_putfh_maxsz + \
607 encode_getattr_maxsz)
608 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_getattr_maxsz)
612 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
615 encode_delegreturn_maxsz + \
616 encode_getattr_maxsz)
617 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
618 decode_sequence_maxsz + \
619 decode_delegreturn_maxsz + \
620 decode_getattr_maxsz)
621 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
622 encode_sequence_maxsz + \
623 encode_putfh_maxsz + \
624 encode_getacl_maxsz)
625 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
626 decode_sequence_maxsz + \
627 decode_putfh_maxsz + \
628 decode_getacl_maxsz)
629 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_setacl_maxsz)
633 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
634 decode_sequence_maxsz + \
635 decode_putfh_maxsz + \
636 decode_setacl_maxsz)
637 #define NFS4_enc_fs_locations_sz \
638 (compound_encode_hdr_maxsz + \
639 encode_sequence_maxsz + \
640 encode_putfh_maxsz + \
641 encode_lookup_maxsz + \
642 encode_fs_locations_maxsz)
643 #define NFS4_dec_fs_locations_sz \
644 (compound_decode_hdr_maxsz + \
645 decode_sequence_maxsz + \
646 decode_putfh_maxsz + \
647 decode_lookup_maxsz + \
648 decode_fs_locations_maxsz)
649 #if defined(CONFIG_NFS_V4_1)
650 #define NFS4_enc_exchange_id_sz \
651 (compound_encode_hdr_maxsz + \
652 encode_exchange_id_maxsz)
653 #define NFS4_dec_exchange_id_sz \
654 (compound_decode_hdr_maxsz + \
655 decode_exchange_id_maxsz)
656 #define NFS4_enc_create_session_sz \
657 (compound_encode_hdr_maxsz + \
658 encode_create_session_maxsz)
659 #define NFS4_dec_create_session_sz \
660 (compound_decode_hdr_maxsz + \
661 decode_create_session_maxsz)
662 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
663 encode_destroy_session_maxsz)
664 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
665 decode_destroy_session_maxsz)
666 #define NFS4_enc_sequence_sz \
667 (compound_decode_hdr_maxsz + \
668 encode_sequence_maxsz)
669 #define NFS4_dec_sequence_sz \
670 (compound_decode_hdr_maxsz + \
671 decode_sequence_maxsz)
672 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
673 encode_sequence_maxsz + \
674 encode_putrootfh_maxsz + \
675 encode_fsinfo_maxsz)
676 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
677 decode_sequence_maxsz + \
678 decode_putrootfh_maxsz + \
679 decode_fsinfo_maxsz)
680 #endif /* CONFIG_NFS_V4_1 */
681
682 static const umode_t nfs_type2fmt[] = {
683 [NF4BAD] = 0,
684 [NF4REG] = S_IFREG,
685 [NF4DIR] = S_IFDIR,
686 [NF4BLK] = S_IFBLK,
687 [NF4CHR] = S_IFCHR,
688 [NF4LNK] = S_IFLNK,
689 [NF4SOCK] = S_IFSOCK,
690 [NF4FIFO] = S_IFIFO,
691 [NF4ATTRDIR] = 0,
692 [NF4NAMEDATTR] = 0,
693 };
694
695 struct compound_hdr {
696 int32_t status;
697 uint32_t nops;
698 __be32 * nops_p;
699 uint32_t taglen;
700 char * tag;
701 uint32_t replen; /* expected reply words */
702 u32 minorversion;
703 };
704
705 /*
706 * START OF "GENERIC" ENCODE ROUTINES.
707 * These may look a little ugly since they are imported from a "generic"
708 * set of XDR encode/decode routines which are intended to be shared by
709 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
710 *
711 * If the pain of reading these is too great, it should be a straightforward
712 * task to translate them into Linux-specific versions which are more
713 * consistent with the style used in NFSv2/v3...
714 */
715 #define WRITE32(n) *p++ = htonl(n)
716 #define WRITE64(n) do { \
717 *p++ = htonl((uint32_t)((n) >> 32)); \
718 *p++ = htonl((uint32_t)(n)); \
719 } while (0)
720 #define WRITEMEM(ptr,nbytes) do { \
721 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
722 } while (0)
723
724 #define RESERVE_SPACE(nbytes) do { \
725 p = xdr_reserve_space(xdr, nbytes); \
726 BUG_ON(!p); \
727 } while (0)
728
729 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
730 {
731 __be32 *p;
732
733 p = xdr_reserve_space(xdr, 4 + len);
734 BUG_ON(p == NULL);
735 xdr_encode_opaque(p, str, len);
736 }
737
738 static void encode_compound_hdr(struct xdr_stream *xdr,
739 struct rpc_rqst *req,
740 struct compound_hdr *hdr)
741 {
742 __be32 *p;
743 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
744
745 /* initialize running count of expected bytes in reply.
746 * NOTE: the replied tag SHOULD be the same is the one sent,
747 * but this is not required as a MUST for the server to do so. */
748 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
749
750 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
751 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
752 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
753 WRITE32(hdr->taglen);
754 WRITEMEM(hdr->tag, hdr->taglen);
755 WRITE32(hdr->minorversion);
756 hdr->nops_p = p;
757 WRITE32(hdr->nops);
758 }
759
760 static void encode_nops(struct compound_hdr *hdr)
761 {
762 BUG_ON(hdr->nops > NFS4_MAX_OPS);
763 *hdr->nops_p = htonl(hdr->nops);
764 }
765
766 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
767 {
768 __be32 *p;
769
770 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
771 BUG_ON(p == NULL);
772 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
773 }
774
775 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
776 {
777 char owner_name[IDMAP_NAMESZ];
778 char owner_group[IDMAP_NAMESZ];
779 int owner_namelen = 0;
780 int owner_grouplen = 0;
781 __be32 *p;
782 __be32 *q;
783 int len;
784 uint32_t bmval0 = 0;
785 uint32_t bmval1 = 0;
786
787 /*
788 * We reserve enough space to write the entire attribute buffer at once.
789 * In the worst-case, this would be
790 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
791 * = 36 bytes, plus any contribution from variable-length fields
792 * such as owner/group.
793 */
794 len = 16;
795
796 /* Sigh */
797 if (iap->ia_valid & ATTR_SIZE)
798 len += 8;
799 if (iap->ia_valid & ATTR_MODE)
800 len += 4;
801 if (iap->ia_valid & ATTR_UID) {
802 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
803 if (owner_namelen < 0) {
804 dprintk("nfs: couldn't resolve uid %d to string\n",
805 iap->ia_uid);
806 /* XXX */
807 strcpy(owner_name, "nobody");
808 owner_namelen = sizeof("nobody") - 1;
809 /* goto out; */
810 }
811 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
812 }
813 if (iap->ia_valid & ATTR_GID) {
814 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
815 if (owner_grouplen < 0) {
816 dprintk("nfs: couldn't resolve gid %d to string\n",
817 iap->ia_gid);
818 strcpy(owner_group, "nobody");
819 owner_grouplen = sizeof("nobody") - 1;
820 /* goto out; */
821 }
822 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
823 }
824 if (iap->ia_valid & ATTR_ATIME_SET)
825 len += 16;
826 else if (iap->ia_valid & ATTR_ATIME)
827 len += 4;
828 if (iap->ia_valid & ATTR_MTIME_SET)
829 len += 16;
830 else if (iap->ia_valid & ATTR_MTIME)
831 len += 4;
832 RESERVE_SPACE(len);
833
834 /*
835 * We write the bitmap length now, but leave the bitmap and the attribute
836 * buffer length to be backfilled at the end of this routine.
837 */
838 WRITE32(2);
839 q = p;
840 p += 3;
841
842 if (iap->ia_valid & ATTR_SIZE) {
843 bmval0 |= FATTR4_WORD0_SIZE;
844 WRITE64(iap->ia_size);
845 }
846 if (iap->ia_valid & ATTR_MODE) {
847 bmval1 |= FATTR4_WORD1_MODE;
848 WRITE32(iap->ia_mode & S_IALLUGO);
849 }
850 if (iap->ia_valid & ATTR_UID) {
851 bmval1 |= FATTR4_WORD1_OWNER;
852 WRITE32(owner_namelen);
853 WRITEMEM(owner_name, owner_namelen);
854 }
855 if (iap->ia_valid & ATTR_GID) {
856 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
857 WRITE32(owner_grouplen);
858 WRITEMEM(owner_group, owner_grouplen);
859 }
860 if (iap->ia_valid & ATTR_ATIME_SET) {
861 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
862 WRITE32(NFS4_SET_TO_CLIENT_TIME);
863 WRITE32(0);
864 WRITE32(iap->ia_mtime.tv_sec);
865 WRITE32(iap->ia_mtime.tv_nsec);
866 }
867 else if (iap->ia_valid & ATTR_ATIME) {
868 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
869 WRITE32(NFS4_SET_TO_SERVER_TIME);
870 }
871 if (iap->ia_valid & ATTR_MTIME_SET) {
872 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
873 WRITE32(NFS4_SET_TO_CLIENT_TIME);
874 WRITE32(0);
875 WRITE32(iap->ia_mtime.tv_sec);
876 WRITE32(iap->ia_mtime.tv_nsec);
877 }
878 else if (iap->ia_valid & ATTR_MTIME) {
879 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
880 WRITE32(NFS4_SET_TO_SERVER_TIME);
881 }
882
883 /*
884 * Now we backfill the bitmap and the attribute buffer length.
885 */
886 if (len != ((char *)p - (char *)q) + 4) {
887 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
888 len, ((char *)p - (char *)q) + 4);
889 BUG();
890 }
891 len = (char *)p - (char *)q - 12;
892 *q++ = htonl(bmval0);
893 *q++ = htonl(bmval1);
894 *q++ = htonl(len);
895
896 /* out: */
897 }
898
899 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
900 {
901 __be32 *p;
902
903 RESERVE_SPACE(8);
904 WRITE32(OP_ACCESS);
905 WRITE32(access);
906 hdr->nops++;
907 hdr->replen += decode_access_maxsz;
908 }
909
910 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
911 {
912 __be32 *p;
913
914 RESERVE_SPACE(8+NFS4_STATEID_SIZE);
915 WRITE32(OP_CLOSE);
916 WRITE32(arg->seqid->sequence->counter);
917 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
918 hdr->nops++;
919 hdr->replen += decode_close_maxsz;
920 }
921
922 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
923 {
924 __be32 *p;
925
926 RESERVE_SPACE(16);
927 WRITE32(OP_COMMIT);
928 WRITE64(args->offset);
929 WRITE32(args->count);
930 hdr->nops++;
931 hdr->replen += decode_commit_maxsz;
932 }
933
934 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
935 {
936 __be32 *p;
937
938 RESERVE_SPACE(8);
939 WRITE32(OP_CREATE);
940 WRITE32(create->ftype);
941
942 switch (create->ftype) {
943 case NF4LNK:
944 RESERVE_SPACE(4);
945 WRITE32(create->u.symlink.len);
946 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
947 break;
948
949 case NF4BLK: case NF4CHR:
950 RESERVE_SPACE(8);
951 WRITE32(create->u.device.specdata1);
952 WRITE32(create->u.device.specdata2);
953 break;
954
955 default:
956 break;
957 }
958
959 RESERVE_SPACE(4 + create->name->len);
960 WRITE32(create->name->len);
961 WRITEMEM(create->name->name, create->name->len);
962 hdr->nops++;
963 hdr->replen += decode_create_maxsz;
964
965 encode_attrs(xdr, create->attrs, create->server);
966 }
967
968 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
969 {
970 __be32 *p;
971
972 RESERVE_SPACE(12);
973 WRITE32(OP_GETATTR);
974 WRITE32(1);
975 WRITE32(bitmap);
976 hdr->nops++;
977 hdr->replen += decode_getattr_maxsz;
978 }
979
980 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
981 {
982 __be32 *p;
983
984 RESERVE_SPACE(16);
985 WRITE32(OP_GETATTR);
986 WRITE32(2);
987 WRITE32(bm0);
988 WRITE32(bm1);
989 hdr->nops++;
990 hdr->replen += decode_getattr_maxsz;
991 }
992
993 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
994 {
995 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
996 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
997 }
998
999 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1000 {
1001 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
1002 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
1003 }
1004
1005 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1006 {
1007 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1008 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1009 }
1010
1011 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1012 {
1013 __be32 *p;
1014
1015 RESERVE_SPACE(4);
1016 WRITE32(OP_GETFH);
1017 hdr->nops++;
1018 hdr->replen += decode_getfh_maxsz;
1019 }
1020
1021 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1022 {
1023 __be32 *p;
1024
1025 RESERVE_SPACE(8 + name->len);
1026 WRITE32(OP_LINK);
1027 WRITE32(name->len);
1028 WRITEMEM(name->name, name->len);
1029 hdr->nops++;
1030 hdr->replen += decode_link_maxsz;
1031 }
1032
1033 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1034 {
1035 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1036 return block ? NFS4_READW_LT : NFS4_READ_LT;
1037 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1038 }
1039
1040 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1041 {
1042 if (fl->fl_end == OFFSET_MAX)
1043 return ~(uint64_t)0;
1044 return fl->fl_end - fl->fl_start + 1;
1045 }
1046
1047 /*
1048 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1049 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1050 */
1051 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1052 {
1053 __be32 *p;
1054
1055 RESERVE_SPACE(32);
1056 WRITE32(OP_LOCK);
1057 WRITE32(nfs4_lock_type(args->fl, args->block));
1058 WRITE32(args->reclaim);
1059 WRITE64(args->fl->fl_start);
1060 WRITE64(nfs4_lock_length(args->fl));
1061 WRITE32(args->new_lock_owner);
1062 if (args->new_lock_owner){
1063 RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
1064 WRITE32(args->open_seqid->sequence->counter);
1065 WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
1066 WRITE32(args->lock_seqid->sequence->counter);
1067 WRITE64(args->lock_owner.clientid);
1068 WRITE32(16);
1069 WRITEMEM("lock id:", 8);
1070 WRITE64(args->lock_owner.id);
1071 }
1072 else {
1073 RESERVE_SPACE(NFS4_STATEID_SIZE+4);
1074 WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
1075 WRITE32(args->lock_seqid->sequence->counter);
1076 }
1077 hdr->nops++;
1078 hdr->replen += decode_lock_maxsz;
1079 }
1080
1081 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1082 {
1083 __be32 *p;
1084
1085 RESERVE_SPACE(52);
1086 WRITE32(OP_LOCKT);
1087 WRITE32(nfs4_lock_type(args->fl, 0));
1088 WRITE64(args->fl->fl_start);
1089 WRITE64(nfs4_lock_length(args->fl));
1090 WRITE64(args->lock_owner.clientid);
1091 WRITE32(16);
1092 WRITEMEM("lock id:", 8);
1093 WRITE64(args->lock_owner.id);
1094 hdr->nops++;
1095 hdr->replen += decode_lockt_maxsz;
1096 }
1097
1098 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1099 {
1100 __be32 *p;
1101
1102 RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
1103 WRITE32(OP_LOCKU);
1104 WRITE32(nfs4_lock_type(args->fl, 0));
1105 WRITE32(args->seqid->sequence->counter);
1106 WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
1107 WRITE64(args->fl->fl_start);
1108 WRITE64(nfs4_lock_length(args->fl));
1109 hdr->nops++;
1110 hdr->replen += decode_locku_maxsz;
1111 }
1112
1113 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1114 {
1115 int len = name->len;
1116 __be32 *p;
1117
1118 RESERVE_SPACE(8 + len);
1119 WRITE32(OP_LOOKUP);
1120 WRITE32(len);
1121 WRITEMEM(name->name, len);
1122 hdr->nops++;
1123 hdr->replen += decode_lookup_maxsz;
1124 }
1125
1126 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1127 {
1128 __be32 *p;
1129
1130 RESERVE_SPACE(8);
1131 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1132 case FMODE_READ:
1133 WRITE32(NFS4_SHARE_ACCESS_READ);
1134 break;
1135 case FMODE_WRITE:
1136 WRITE32(NFS4_SHARE_ACCESS_WRITE);
1137 break;
1138 case FMODE_READ|FMODE_WRITE:
1139 WRITE32(NFS4_SHARE_ACCESS_BOTH);
1140 break;
1141 default:
1142 WRITE32(0);
1143 }
1144 WRITE32(0); /* for linux, share_deny = 0 always */
1145 }
1146
1147 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1148 {
1149 __be32 *p;
1150 /*
1151 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1152 * owner 4 = 32
1153 */
1154 RESERVE_SPACE(8);
1155 WRITE32(OP_OPEN);
1156 WRITE32(arg->seqid->sequence->counter);
1157 encode_share_access(xdr, arg->fmode);
1158 RESERVE_SPACE(28);
1159 WRITE64(arg->clientid);
1160 WRITE32(16);
1161 WRITEMEM("open id:", 8);
1162 WRITE64(arg->id);
1163 }
1164
1165 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1166 {
1167 __be32 *p;
1168
1169 RESERVE_SPACE(4);
1170 switch(arg->open_flags & O_EXCL) {
1171 case 0:
1172 WRITE32(NFS4_CREATE_UNCHECKED);
1173 encode_attrs(xdr, arg->u.attrs, arg->server);
1174 break;
1175 default:
1176 WRITE32(NFS4_CREATE_EXCLUSIVE);
1177 encode_nfs4_verifier(xdr, &arg->u.verifier);
1178 }
1179 }
1180
1181 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1182 {
1183 __be32 *p;
1184
1185 RESERVE_SPACE(4);
1186 switch (arg->open_flags & O_CREAT) {
1187 case 0:
1188 WRITE32(NFS4_OPEN_NOCREATE);
1189 break;
1190 default:
1191 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1192 WRITE32(NFS4_OPEN_CREATE);
1193 encode_createmode(xdr, arg);
1194 }
1195 }
1196
1197 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1198 {
1199 __be32 *p;
1200
1201 RESERVE_SPACE(4);
1202 switch (delegation_type) {
1203 case 0:
1204 WRITE32(NFS4_OPEN_DELEGATE_NONE);
1205 break;
1206 case FMODE_READ:
1207 WRITE32(NFS4_OPEN_DELEGATE_READ);
1208 break;
1209 case FMODE_WRITE|FMODE_READ:
1210 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
1211 break;
1212 default:
1213 BUG();
1214 }
1215 }
1216
1217 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1218 {
1219 __be32 *p;
1220
1221 RESERVE_SPACE(4);
1222 WRITE32(NFS4_OPEN_CLAIM_NULL);
1223 encode_string(xdr, name->len, name->name);
1224 }
1225
1226 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1227 {
1228 __be32 *p;
1229
1230 RESERVE_SPACE(4);
1231 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
1232 encode_delegation_type(xdr, type);
1233 }
1234
1235 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1236 {
1237 __be32 *p;
1238
1239 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1240 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1241 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1242 encode_string(xdr, name->len, name->name);
1243 }
1244
1245 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1246 {
1247 encode_openhdr(xdr, arg);
1248 encode_opentype(xdr, arg);
1249 switch (arg->claim) {
1250 case NFS4_OPEN_CLAIM_NULL:
1251 encode_claim_null(xdr, arg->name);
1252 break;
1253 case NFS4_OPEN_CLAIM_PREVIOUS:
1254 encode_claim_previous(xdr, arg->u.delegation_type);
1255 break;
1256 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1257 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1258 break;
1259 default:
1260 BUG();
1261 }
1262 hdr->nops++;
1263 hdr->replen += decode_open_maxsz;
1264 }
1265
1266 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1267 {
1268 __be32 *p;
1269
1270 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1271 WRITE32(OP_OPEN_CONFIRM);
1272 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1273 WRITE32(arg->seqid->sequence->counter);
1274 hdr->nops++;
1275 hdr->replen += decode_open_confirm_maxsz;
1276 }
1277
1278 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1279 {
1280 __be32 *p;
1281
1282 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1283 WRITE32(OP_OPEN_DOWNGRADE);
1284 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1285 WRITE32(arg->seqid->sequence->counter);
1286 encode_share_access(xdr, arg->fmode);
1287 hdr->nops++;
1288 hdr->replen += decode_open_downgrade_maxsz;
1289 }
1290
1291 static void
1292 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1293 {
1294 int len = fh->size;
1295 __be32 *p;
1296
1297 RESERVE_SPACE(8 + len);
1298 WRITE32(OP_PUTFH);
1299 WRITE32(len);
1300 WRITEMEM(fh->data, len);
1301 hdr->nops++;
1302 hdr->replen += decode_putfh_maxsz;
1303 }
1304
1305 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1306 {
1307 __be32 *p;
1308
1309 RESERVE_SPACE(4);
1310 WRITE32(OP_PUTROOTFH);
1311 hdr->nops++;
1312 hdr->replen += decode_putrootfh_maxsz;
1313 }
1314
1315 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1316 {
1317 nfs4_stateid stateid;
1318 __be32 *p;
1319
1320 RESERVE_SPACE(NFS4_STATEID_SIZE);
1321 if (ctx->state != NULL) {
1322 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1323 WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
1324 } else
1325 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1326 }
1327
1328 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1329 {
1330 __be32 *p;
1331
1332 RESERVE_SPACE(4);
1333 WRITE32(OP_READ);
1334
1335 encode_stateid(xdr, args->context);
1336
1337 RESERVE_SPACE(12);
1338 WRITE64(args->offset);
1339 WRITE32(args->count);
1340 hdr->nops++;
1341 hdr->replen += decode_read_maxsz;
1342 }
1343
1344 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1345 {
1346 uint32_t attrs[2] = {
1347 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1348 FATTR4_WORD1_MOUNTED_ON_FILEID,
1349 };
1350 __be32 *p;
1351
1352 RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
1353 WRITE32(OP_READDIR);
1354 WRITE64(readdir->cookie);
1355 WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
1356 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1357 WRITE32(readdir->count);
1358 WRITE32(2);
1359 /* Switch to mounted_on_fileid if the server supports it */
1360 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1361 attrs[0] &= ~FATTR4_WORD0_FILEID;
1362 else
1363 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1364 WRITE32(attrs[0] & readdir->bitmask[0]);
1365 WRITE32(attrs[1] & readdir->bitmask[1]);
1366 hdr->nops++;
1367 hdr->replen += decode_readdir_maxsz;
1368 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1369 __func__,
1370 (unsigned long long)readdir->cookie,
1371 ((u32 *)readdir->verifier.data)[0],
1372 ((u32 *)readdir->verifier.data)[1],
1373 attrs[0] & readdir->bitmask[0],
1374 attrs[1] & readdir->bitmask[1]);
1375 }
1376
1377 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1378 {
1379 __be32 *p;
1380
1381 RESERVE_SPACE(4);
1382 WRITE32(OP_READLINK);
1383 hdr->nops++;
1384 hdr->replen += decode_readlink_maxsz;
1385 }
1386
1387 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1388 {
1389 __be32 *p;
1390
1391 RESERVE_SPACE(8 + name->len);
1392 WRITE32(OP_REMOVE);
1393 WRITE32(name->len);
1394 WRITEMEM(name->name, name->len);
1395 hdr->nops++;
1396 hdr->replen += decode_remove_maxsz;
1397 }
1398
1399 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1400 {
1401 __be32 *p;
1402
1403 RESERVE_SPACE(8 + oldname->len);
1404 WRITE32(OP_RENAME);
1405 WRITE32(oldname->len);
1406 WRITEMEM(oldname->name, oldname->len);
1407
1408 RESERVE_SPACE(4 + newname->len);
1409 WRITE32(newname->len);
1410 WRITEMEM(newname->name, newname->len);
1411 hdr->nops++;
1412 hdr->replen += decode_rename_maxsz;
1413 }
1414
1415 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1416 {
1417 __be32 *p;
1418
1419 RESERVE_SPACE(12);
1420 WRITE32(OP_RENEW);
1421 WRITE64(client_stateid->cl_clientid);
1422 hdr->nops++;
1423 hdr->replen += decode_renew_maxsz;
1424 }
1425
1426 static void
1427 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1428 {
1429 __be32 *p;
1430
1431 RESERVE_SPACE(4);
1432 WRITE32(OP_RESTOREFH);
1433 hdr->nops++;
1434 hdr->replen += decode_restorefh_maxsz;
1435 }
1436
1437 static int
1438 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1439 {
1440 __be32 *p;
1441
1442 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1443 WRITE32(OP_SETATTR);
1444 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1445 RESERVE_SPACE(2*4);
1446 WRITE32(1);
1447 WRITE32(FATTR4_WORD0_ACL);
1448 if (arg->acl_len % 4)
1449 return -EINVAL;
1450 RESERVE_SPACE(4);
1451 WRITE32(arg->acl_len);
1452 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1453 hdr->nops++;
1454 hdr->replen += decode_setacl_maxsz;
1455 return 0;
1456 }
1457
1458 static void
1459 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1460 {
1461 __be32 *p;
1462
1463 RESERVE_SPACE(4);
1464 WRITE32(OP_SAVEFH);
1465 hdr->nops++;
1466 hdr->replen += decode_savefh_maxsz;
1467 }
1468
1469 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1470 {
1471 __be32 *p;
1472
1473 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1474 WRITE32(OP_SETATTR);
1475 WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
1476 hdr->nops++;
1477 hdr->replen += decode_setattr_maxsz;
1478 encode_attrs(xdr, arg->iap, server);
1479 }
1480
1481 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1482 {
1483 __be32 *p;
1484
1485 RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
1486 WRITE32(OP_SETCLIENTID);
1487 WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1488
1489 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1490 RESERVE_SPACE(4);
1491 WRITE32(setclientid->sc_prog);
1492 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1493 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1494 RESERVE_SPACE(4);
1495 WRITE32(setclientid->sc_cb_ident);
1496 hdr->nops++;
1497 hdr->replen += decode_setclientid_maxsz;
1498 }
1499
1500 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
1501 {
1502 __be32 *p;
1503
1504 RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
1505 WRITE32(OP_SETCLIENTID_CONFIRM);
1506 WRITE64(client_state->cl_clientid);
1507 WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1508 hdr->nops++;
1509 hdr->replen += decode_setclientid_confirm_maxsz;
1510 }
1511
1512 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1513 {
1514 __be32 *p;
1515
1516 RESERVE_SPACE(4);
1517 WRITE32(OP_WRITE);
1518
1519 encode_stateid(xdr, args->context);
1520
1521 RESERVE_SPACE(16);
1522 WRITE64(args->offset);
1523 WRITE32(args->stable);
1524 WRITE32(args->count);
1525
1526 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1527 hdr->nops++;
1528 hdr->replen += decode_write_maxsz;
1529 }
1530
1531 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1532 {
1533 __be32 *p;
1534
1535 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1536
1537 WRITE32(OP_DELEGRETURN);
1538 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1539 hdr->nops++;
1540 hdr->replen += decode_delegreturn_maxsz;
1541 }
1542
1543 #if defined(CONFIG_NFS_V4_1)
1544 /* NFSv4.1 operations */
1545 static void encode_exchange_id(struct xdr_stream *xdr,
1546 struct nfs41_exchange_id_args *args,
1547 struct compound_hdr *hdr)
1548 {
1549 __be32 *p;
1550
1551 RESERVE_SPACE(4 + sizeof(args->verifier->data));
1552 WRITE32(OP_EXCHANGE_ID);
1553 WRITEMEM(args->verifier->data, sizeof(args->verifier->data));
1554
1555 encode_string(xdr, args->id_len, args->id);
1556
1557 RESERVE_SPACE(12);
1558 WRITE32(args->flags);
1559 WRITE32(0); /* zero length state_protect4_a */
1560 WRITE32(0); /* zero length implementation id array */
1561 hdr->nops++;
1562 hdr->replen += decode_exchange_id_maxsz;
1563 }
1564
1565 static void encode_create_session(struct xdr_stream *xdr,
1566 struct nfs41_create_session_args *args,
1567 struct compound_hdr *hdr)
1568 {
1569 __be32 *p;
1570 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1571 uint32_t len;
1572 struct nfs_client *clp = args->client;
1573
1574 RESERVE_SPACE(4);
1575 WRITE32(OP_CREATE_SESSION);
1576
1577 RESERVE_SPACE(8);
1578 WRITE64(clp->cl_ex_clid);
1579
1580 RESERVE_SPACE(8);
1581 WRITE32(clp->cl_seqid); /*Sequence id */
1582 WRITE32(args->flags); /*flags */
1583
1584 RESERVE_SPACE(2*28); /* 2 channel_attrs */
1585 /* Fore Channel */
1586 WRITE32(args->fc_attrs.headerpadsz); /* header padding size */
1587 WRITE32(args->fc_attrs.max_rqst_sz); /* max req size */
1588 WRITE32(args->fc_attrs.max_resp_sz); /* max resp size */
1589 WRITE32(args->fc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1590 WRITE32(args->fc_attrs.max_ops); /* max operations */
1591 WRITE32(args->fc_attrs.max_reqs); /* max requests */
1592 WRITE32(0); /* rdmachannel_attrs */
1593
1594 /* Back Channel */
1595 WRITE32(args->fc_attrs.headerpadsz); /* header padding size */
1596 WRITE32(args->bc_attrs.max_rqst_sz); /* max req size */
1597 WRITE32(args->bc_attrs.max_resp_sz); /* max resp size */
1598 WRITE32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1599 WRITE32(args->bc_attrs.max_ops); /* max operations */
1600 WRITE32(args->bc_attrs.max_reqs); /* max requests */
1601 WRITE32(0); /* rdmachannel_attrs */
1602
1603 RESERVE_SPACE(4);
1604 WRITE32(args->cb_program); /* cb_program */
1605
1606 RESERVE_SPACE(4); /* # of security flavors */
1607 WRITE32(1);
1608
1609 RESERVE_SPACE(4);
1610 WRITE32(RPC_AUTH_UNIX); /* auth_sys */
1611
1612 /* authsys_parms rfc1831 */
1613 RESERVE_SPACE(4);
1614 WRITE32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1615 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1616 clp->cl_ipaddr);
1617 RESERVE_SPACE(16 + len);
1618 WRITE32(len);
1619 WRITEMEM(machine_name, len);
1620 WRITE32(0); /* UID */
1621 WRITE32(0); /* GID */
1622 WRITE32(0); /* No more gids */
1623 hdr->nops++;
1624 hdr->replen += decode_create_session_maxsz;
1625 }
1626
1627 static void encode_destroy_session(struct xdr_stream *xdr,
1628 struct nfs4_session *session,
1629 struct compound_hdr *hdr)
1630 {
1631 __be32 *p;
1632 RESERVE_SPACE(4 + NFS4_MAX_SESSIONID_LEN);
1633 WRITE32(OP_DESTROY_SESSION);
1634 WRITEMEM(session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1635 hdr->nops++;
1636 hdr->replen += decode_destroy_session_maxsz;
1637 }
1638 #endif /* CONFIG_NFS_V4_1 */
1639
1640 static void encode_sequence(struct xdr_stream *xdr,
1641 const struct nfs4_sequence_args *args,
1642 struct compound_hdr *hdr)
1643 {
1644 #if defined(CONFIG_NFS_V4_1)
1645 struct nfs4_session *session = args->sa_session;
1646 struct nfs4_slot_table *tp;
1647 struct nfs4_slot *slot;
1648 __be32 *p;
1649
1650 if (!session)
1651 return;
1652
1653 tp = &session->fc_slot_table;
1654
1655 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1656 slot = tp->slots + args->sa_slotid;
1657
1658 RESERVE_SPACE(4);
1659 WRITE32(OP_SEQUENCE);
1660
1661 /*
1662 * Sessionid + seqid + slotid + max slotid + cache_this
1663 */
1664 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1665 "max_slotid=%d cache_this=%d\n",
1666 __func__,
1667 ((u32 *)session->sess_id.data)[0],
1668 ((u32 *)session->sess_id.data)[1],
1669 ((u32 *)session->sess_id.data)[2],
1670 ((u32 *)session->sess_id.data)[3],
1671 slot->seq_nr, args->sa_slotid,
1672 tp->highest_used_slotid, args->sa_cache_this);
1673 RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 16);
1674 WRITEMEM(session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1675 WRITE32(slot->seq_nr);
1676 WRITE32(args->sa_slotid);
1677 WRITE32(tp->highest_used_slotid);
1678 WRITE32(args->sa_cache_this);
1679 hdr->nops++;
1680 hdr->replen += decode_sequence_maxsz;
1681 #endif /* CONFIG_NFS_V4_1 */
1682 }
1683
1684 /*
1685 * END OF "GENERIC" ENCODE ROUTINES.
1686 */
1687
1688 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1689 {
1690 #if defined(CONFIG_NFS_V4_1)
1691 if (args->sa_session)
1692 return args->sa_session->clp->cl_minorversion;
1693 #endif /* CONFIG_NFS_V4_1 */
1694 return 0;
1695 }
1696
1697 /*
1698 * Encode an ACCESS request
1699 */
1700 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1701 {
1702 struct xdr_stream xdr;
1703 struct compound_hdr hdr = {
1704 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1705 };
1706
1707 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1708 encode_compound_hdr(&xdr, req, &hdr);
1709 encode_sequence(&xdr, &args->seq_args, &hdr);
1710 encode_putfh(&xdr, args->fh, &hdr);
1711 encode_access(&xdr, args->access, &hdr);
1712 encode_getfattr(&xdr, args->bitmask, &hdr);
1713 encode_nops(&hdr);
1714 return 0;
1715 }
1716
1717 /*
1718 * Encode LOOKUP request
1719 */
1720 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1721 {
1722 struct xdr_stream xdr;
1723 struct compound_hdr hdr = {
1724 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1725 };
1726
1727 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1728 encode_compound_hdr(&xdr, req, &hdr);
1729 encode_sequence(&xdr, &args->seq_args, &hdr);
1730 encode_putfh(&xdr, args->dir_fh, &hdr);
1731 encode_lookup(&xdr, args->name, &hdr);
1732 encode_getfh(&xdr, &hdr);
1733 encode_getfattr(&xdr, args->bitmask, &hdr);
1734 encode_nops(&hdr);
1735 return 0;
1736 }
1737
1738 /*
1739 * Encode LOOKUP_ROOT request
1740 */
1741 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1742 {
1743 struct xdr_stream xdr;
1744 struct compound_hdr hdr = {
1745 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1746 };
1747
1748 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1749 encode_compound_hdr(&xdr, req, &hdr);
1750 encode_sequence(&xdr, &args->seq_args, &hdr);
1751 encode_putrootfh(&xdr, &hdr);
1752 encode_getfh(&xdr, &hdr);
1753 encode_getfattr(&xdr, args->bitmask, &hdr);
1754 encode_nops(&hdr);
1755 return 0;
1756 }
1757
1758 /*
1759 * Encode REMOVE request
1760 */
1761 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1762 {
1763 struct xdr_stream xdr;
1764 struct compound_hdr hdr = {
1765 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1766 };
1767
1768 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1769 encode_compound_hdr(&xdr, req, &hdr);
1770 encode_sequence(&xdr, &args->seq_args, &hdr);
1771 encode_putfh(&xdr, args->fh, &hdr);
1772 encode_remove(&xdr, &args->name, &hdr);
1773 encode_getfattr(&xdr, args->bitmask, &hdr);
1774 encode_nops(&hdr);
1775 return 0;
1776 }
1777
1778 /*
1779 * Encode RENAME request
1780 */
1781 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1782 {
1783 struct xdr_stream xdr;
1784 struct compound_hdr hdr = {
1785 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1786 };
1787
1788 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1789 encode_compound_hdr(&xdr, req, &hdr);
1790 encode_sequence(&xdr, &args->seq_args, &hdr);
1791 encode_putfh(&xdr, args->old_dir, &hdr);
1792 encode_savefh(&xdr, &hdr);
1793 encode_putfh(&xdr, args->new_dir, &hdr);
1794 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1795 encode_getfattr(&xdr, args->bitmask, &hdr);
1796 encode_restorefh(&xdr, &hdr);
1797 encode_getfattr(&xdr, args->bitmask, &hdr);
1798 encode_nops(&hdr);
1799 return 0;
1800 }
1801
1802 /*
1803 * Encode LINK request
1804 */
1805 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1806 {
1807 struct xdr_stream xdr;
1808 struct compound_hdr hdr = {
1809 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1810 };
1811
1812 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1813 encode_compound_hdr(&xdr, req, &hdr);
1814 encode_sequence(&xdr, &args->seq_args, &hdr);
1815 encode_putfh(&xdr, args->fh, &hdr);
1816 encode_savefh(&xdr, &hdr);
1817 encode_putfh(&xdr, args->dir_fh, &hdr);
1818 encode_link(&xdr, args->name, &hdr);
1819 encode_getfattr(&xdr, args->bitmask, &hdr);
1820 encode_restorefh(&xdr, &hdr);
1821 encode_getfattr(&xdr, args->bitmask, &hdr);
1822 encode_nops(&hdr);
1823 return 0;
1824 }
1825
1826 /*
1827 * Encode CREATE request
1828 */
1829 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1830 {
1831 struct xdr_stream xdr;
1832 struct compound_hdr hdr = {
1833 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1834 };
1835
1836 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1837 encode_compound_hdr(&xdr, req, &hdr);
1838 encode_sequence(&xdr, &args->seq_args, &hdr);
1839 encode_putfh(&xdr, args->dir_fh, &hdr);
1840 encode_savefh(&xdr, &hdr);
1841 encode_create(&xdr, args, &hdr);
1842 encode_getfh(&xdr, &hdr);
1843 encode_getfattr(&xdr, args->bitmask, &hdr);
1844 encode_restorefh(&xdr, &hdr);
1845 encode_getfattr(&xdr, args->bitmask, &hdr);
1846 encode_nops(&hdr);
1847 return 0;
1848 }
1849
1850 /*
1851 * Encode SYMLINK request
1852 */
1853 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1854 {
1855 return nfs4_xdr_enc_create(req, p, args);
1856 }
1857
1858 /*
1859 * Encode GETATTR request
1860 */
1861 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1862 {
1863 struct xdr_stream xdr;
1864 struct compound_hdr hdr = {
1865 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1866 };
1867
1868 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1869 encode_compound_hdr(&xdr, req, &hdr);
1870 encode_sequence(&xdr, &args->seq_args, &hdr);
1871 encode_putfh(&xdr, args->fh, &hdr);
1872 encode_getfattr(&xdr, args->bitmask, &hdr);
1873 encode_nops(&hdr);
1874 return 0;
1875 }
1876
1877 /*
1878 * Encode a CLOSE request
1879 */
1880 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1881 {
1882 struct xdr_stream xdr;
1883 struct compound_hdr hdr = {
1884 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1885 };
1886
1887 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1888 encode_compound_hdr(&xdr, req, &hdr);
1889 encode_sequence(&xdr, &args->seq_args, &hdr);
1890 encode_putfh(&xdr, args->fh, &hdr);
1891 encode_close(&xdr, args, &hdr);
1892 encode_getfattr(&xdr, args->bitmask, &hdr);
1893 encode_nops(&hdr);
1894 return 0;
1895 }
1896
1897 /*
1898 * Encode an OPEN request
1899 */
1900 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1901 {
1902 struct xdr_stream xdr;
1903 struct compound_hdr hdr = {
1904 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1905 };
1906
1907 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1908 encode_compound_hdr(&xdr, req, &hdr);
1909 encode_sequence(&xdr, &args->seq_args, &hdr);
1910 encode_putfh(&xdr, args->fh, &hdr);
1911 encode_savefh(&xdr, &hdr);
1912 encode_open(&xdr, args, &hdr);
1913 encode_getfh(&xdr, &hdr);
1914 encode_getfattr(&xdr, args->bitmask, &hdr);
1915 encode_restorefh(&xdr, &hdr);
1916 encode_getfattr(&xdr, args->bitmask, &hdr);
1917 encode_nops(&hdr);
1918 return 0;
1919 }
1920
1921 /*
1922 * Encode an OPEN_CONFIRM request
1923 */
1924 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1925 {
1926 struct xdr_stream xdr;
1927 struct compound_hdr hdr = {
1928 .nops = 0,
1929 };
1930
1931 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1932 encode_compound_hdr(&xdr, req, &hdr);
1933 encode_putfh(&xdr, args->fh, &hdr);
1934 encode_open_confirm(&xdr, args, &hdr);
1935 encode_nops(&hdr);
1936 return 0;
1937 }
1938
1939 /*
1940 * Encode an OPEN request with no attributes.
1941 */
1942 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1943 {
1944 struct xdr_stream xdr;
1945 struct compound_hdr hdr = {
1946 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1947 };
1948
1949 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1950 encode_compound_hdr(&xdr, req, &hdr);
1951 encode_sequence(&xdr, &args->seq_args, &hdr);
1952 encode_putfh(&xdr, args->fh, &hdr);
1953 encode_open(&xdr, args, &hdr);
1954 encode_getfattr(&xdr, args->bitmask, &hdr);
1955 encode_nops(&hdr);
1956 return 0;
1957 }
1958
1959 /*
1960 * Encode an OPEN_DOWNGRADE request
1961 */
1962 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1963 {
1964 struct xdr_stream xdr;
1965 struct compound_hdr hdr = {
1966 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1967 };
1968
1969 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1970 encode_compound_hdr(&xdr, req, &hdr);
1971 encode_sequence(&xdr, &args->seq_args, &hdr);
1972 encode_putfh(&xdr, args->fh, &hdr);
1973 encode_open_downgrade(&xdr, args, &hdr);
1974 encode_getfattr(&xdr, args->bitmask, &hdr);
1975 encode_nops(&hdr);
1976 return 0;
1977 }
1978
1979 /*
1980 * Encode a LOCK request
1981 */
1982 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1983 {
1984 struct xdr_stream xdr;
1985 struct compound_hdr hdr = {
1986 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1987 };
1988
1989 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1990 encode_compound_hdr(&xdr, req, &hdr);
1991 encode_sequence(&xdr, &args->seq_args, &hdr);
1992 encode_putfh(&xdr, args->fh, &hdr);
1993 encode_lock(&xdr, args, &hdr);
1994 encode_nops(&hdr);
1995 return 0;
1996 }
1997
1998 /*
1999 * Encode a LOCKT request
2000 */
2001 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
2002 {
2003 struct xdr_stream xdr;
2004 struct compound_hdr hdr = {
2005 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2006 };
2007
2008 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2009 encode_compound_hdr(&xdr, req, &hdr);
2010 encode_sequence(&xdr, &args->seq_args, &hdr);
2011 encode_putfh(&xdr, args->fh, &hdr);
2012 encode_lockt(&xdr, args, &hdr);
2013 encode_nops(&hdr);
2014 return 0;
2015 }
2016
2017 /*
2018 * Encode a LOCKU request
2019 */
2020 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
2021 {
2022 struct xdr_stream xdr;
2023 struct compound_hdr hdr = {
2024 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2025 };
2026
2027 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2028 encode_compound_hdr(&xdr, req, &hdr);
2029 encode_sequence(&xdr, &args->seq_args, &hdr);
2030 encode_putfh(&xdr, args->fh, &hdr);
2031 encode_locku(&xdr, args, &hdr);
2032 encode_nops(&hdr);
2033 return 0;
2034 }
2035
2036 /*
2037 * Encode a READLINK request
2038 */
2039 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *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_readlink(&xdr, args, req, &hdr);
2051
2052 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2053 args->pgbase, args->pglen);
2054 encode_nops(&hdr);
2055 return 0;
2056 }
2057
2058 /*
2059 * Encode a READDIR request
2060 */
2061 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
2062 {
2063 struct xdr_stream xdr;
2064 struct compound_hdr hdr = {
2065 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2066 };
2067
2068 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2069 encode_compound_hdr(&xdr, req, &hdr);
2070 encode_sequence(&xdr, &args->seq_args, &hdr);
2071 encode_putfh(&xdr, args->fh, &hdr);
2072 encode_readdir(&xdr, args, req, &hdr);
2073
2074 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2075 args->pgbase, args->count);
2076 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2077 __func__, hdr.replen << 2, args->pages,
2078 args->pgbase, args->count);
2079 encode_nops(&hdr);
2080 return 0;
2081 }
2082
2083 /*
2084 * Encode a READ request
2085 */
2086 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
2087 {
2088 struct xdr_stream xdr;
2089 struct compound_hdr hdr = {
2090 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2091 };
2092
2093 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2094 encode_compound_hdr(&xdr, req, &hdr);
2095 encode_sequence(&xdr, &args->seq_args, &hdr);
2096 encode_putfh(&xdr, args->fh, &hdr);
2097 encode_read(&xdr, args, &hdr);
2098
2099 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2100 args->pages, args->pgbase, args->count);
2101 req->rq_rcv_buf.flags |= XDRBUF_READ;
2102 encode_nops(&hdr);
2103 return 0;
2104 }
2105
2106 /*
2107 * Encode an SETATTR request
2108 */
2109 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
2110 {
2111 struct xdr_stream xdr;
2112 struct compound_hdr hdr = {
2113 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2114 };
2115
2116 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2117 encode_compound_hdr(&xdr, req, &hdr);
2118 encode_sequence(&xdr, &args->seq_args, &hdr);
2119 encode_putfh(&xdr, args->fh, &hdr);
2120 encode_setattr(&xdr, args, args->server, &hdr);
2121 encode_getfattr(&xdr, args->bitmask, &hdr);
2122 encode_nops(&hdr);
2123 return 0;
2124 }
2125
2126 /*
2127 * Encode a GETACL request
2128 */
2129 static int
2130 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
2131 struct nfs_getaclargs *args)
2132 {
2133 struct xdr_stream xdr;
2134 struct compound_hdr hdr = {
2135 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2136 };
2137 uint32_t replen;
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 replen = hdr.replen + nfs4_fattr_bitmap_maxsz + 1;
2144 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2145
2146 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2147 args->acl_pages, args->acl_pgbase, args->acl_len);
2148 encode_nops(&hdr);
2149 return 0;
2150 }
2151
2152 /*
2153 * Encode a WRITE request
2154 */
2155 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2156 {
2157 struct xdr_stream xdr;
2158 struct compound_hdr hdr = {
2159 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2160 };
2161
2162 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2163 encode_compound_hdr(&xdr, req, &hdr);
2164 encode_sequence(&xdr, &args->seq_args, &hdr);
2165 encode_putfh(&xdr, args->fh, &hdr);
2166 encode_write(&xdr, args, &hdr);
2167 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2168 encode_getfattr(&xdr, args->bitmask, &hdr);
2169 encode_nops(&hdr);
2170 return 0;
2171 }
2172
2173 /*
2174 * a COMMIT request
2175 */
2176 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2177 {
2178 struct xdr_stream xdr;
2179 struct compound_hdr hdr = {
2180 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2181 };
2182
2183 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2184 encode_compound_hdr(&xdr, req, &hdr);
2185 encode_sequence(&xdr, &args->seq_args, &hdr);
2186 encode_putfh(&xdr, args->fh, &hdr);
2187 encode_commit(&xdr, args, &hdr);
2188 encode_getfattr(&xdr, args->bitmask, &hdr);
2189 encode_nops(&hdr);
2190 return 0;
2191 }
2192
2193 /*
2194 * FSINFO request
2195 */
2196 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2197 {
2198 struct xdr_stream xdr;
2199 struct compound_hdr hdr = {
2200 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2201 };
2202
2203 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2204 encode_compound_hdr(&xdr, req, &hdr);
2205 encode_sequence(&xdr, &args->seq_args, &hdr);
2206 encode_putfh(&xdr, args->fh, &hdr);
2207 encode_fsinfo(&xdr, args->bitmask, &hdr);
2208 encode_nops(&hdr);
2209 return 0;
2210 }
2211
2212 /*
2213 * a PATHCONF request
2214 */
2215 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2216 {
2217 struct xdr_stream xdr;
2218 struct compound_hdr hdr = {
2219 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2220 };
2221
2222 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2223 encode_compound_hdr(&xdr, req, &hdr);
2224 encode_sequence(&xdr, &args->seq_args, &hdr);
2225 encode_putfh(&xdr, args->fh, &hdr);
2226 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2227 &hdr);
2228 encode_nops(&hdr);
2229 return 0;
2230 }
2231
2232 /*
2233 * a STATFS request
2234 */
2235 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2236 {
2237 struct xdr_stream xdr;
2238 struct compound_hdr hdr = {
2239 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2240 };
2241
2242 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2243 encode_compound_hdr(&xdr, req, &hdr);
2244 encode_sequence(&xdr, &args->seq_args, &hdr);
2245 encode_putfh(&xdr, args->fh, &hdr);
2246 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2247 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2248 encode_nops(&hdr);
2249 return 0;
2250 }
2251
2252 /*
2253 * GETATTR_BITMAP request
2254 */
2255 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2256 struct nfs4_server_caps_arg *args)
2257 {
2258 struct xdr_stream xdr;
2259 struct compound_hdr hdr = {
2260 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2261 };
2262
2263 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2264 encode_compound_hdr(&xdr, req, &hdr);
2265 encode_sequence(&xdr, &args->seq_args, &hdr);
2266 encode_putfh(&xdr, args->fhandle, &hdr);
2267 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2268 FATTR4_WORD0_LINK_SUPPORT|
2269 FATTR4_WORD0_SYMLINK_SUPPORT|
2270 FATTR4_WORD0_ACLSUPPORT, &hdr);
2271 encode_nops(&hdr);
2272 return 0;
2273 }
2274
2275 /*
2276 * a RENEW request
2277 */
2278 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2279 {
2280 struct xdr_stream xdr;
2281 struct compound_hdr hdr = {
2282 .nops = 0,
2283 };
2284
2285 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2286 encode_compound_hdr(&xdr, req, &hdr);
2287 encode_renew(&xdr, clp, &hdr);
2288 encode_nops(&hdr);
2289 return 0;
2290 }
2291
2292 /*
2293 * a SETCLIENTID request
2294 */
2295 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2296 {
2297 struct xdr_stream xdr;
2298 struct compound_hdr hdr = {
2299 .nops = 0,
2300 };
2301
2302 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2303 encode_compound_hdr(&xdr, req, &hdr);
2304 encode_setclientid(&xdr, sc, &hdr);
2305 encode_nops(&hdr);
2306 return 0;
2307 }
2308
2309 /*
2310 * a SETCLIENTID_CONFIRM request
2311 */
2312 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2313 {
2314 struct xdr_stream xdr;
2315 struct compound_hdr hdr = {
2316 .nops = 0,
2317 };
2318 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2319
2320 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2321 encode_compound_hdr(&xdr, req, &hdr);
2322 encode_setclientid_confirm(&xdr, clp, &hdr);
2323 encode_putrootfh(&xdr, &hdr);
2324 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2325 encode_nops(&hdr);
2326 return 0;
2327 }
2328
2329 /*
2330 * DELEGRETURN request
2331 */
2332 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2333 {
2334 struct xdr_stream xdr;
2335 struct compound_hdr hdr = {
2336 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2337 };
2338
2339 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2340 encode_compound_hdr(&xdr, req, &hdr);
2341 encode_sequence(&xdr, &args->seq_args, &hdr);
2342 encode_putfh(&xdr, args->fhandle, &hdr);
2343 encode_delegreturn(&xdr, args->stateid, &hdr);
2344 encode_getfattr(&xdr, args->bitmask, &hdr);
2345 encode_nops(&hdr);
2346 return 0;
2347 }
2348
2349 /*
2350 * Encode FS_LOCATIONS request
2351 */
2352 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2353 {
2354 struct xdr_stream xdr;
2355 struct compound_hdr hdr = {
2356 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2357 };
2358 uint32_t replen;
2359
2360 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2361 encode_compound_hdr(&xdr, req, &hdr);
2362 encode_sequence(&xdr, &args->seq_args, &hdr);
2363 encode_putfh(&xdr, args->dir_fh, &hdr);
2364 encode_lookup(&xdr, args->name, &hdr);
2365 replen = hdr.replen; /* get the attribute into args->page */
2366 encode_fs_locations(&xdr, args->bitmask, &hdr);
2367
2368 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2369 0, PAGE_SIZE);
2370 encode_nops(&hdr);
2371 return 0;
2372 }
2373
2374 #if defined(CONFIG_NFS_V4_1)
2375 /*
2376 * EXCHANGE_ID request
2377 */
2378 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2379 struct nfs41_exchange_id_args *args)
2380 {
2381 struct xdr_stream xdr;
2382 struct compound_hdr hdr = {
2383 .minorversion = args->client->cl_minorversion,
2384 };
2385
2386 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2387 encode_compound_hdr(&xdr, req, &hdr);
2388 encode_exchange_id(&xdr, args, &hdr);
2389 encode_nops(&hdr);
2390 return 0;
2391 }
2392
2393 /*
2394 * a CREATE_SESSION request
2395 */
2396 static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
2397 struct nfs41_create_session_args *args)
2398 {
2399 struct xdr_stream xdr;
2400 struct compound_hdr hdr = {
2401 .minorversion = args->client->cl_minorversion,
2402 };
2403
2404 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2405 encode_compound_hdr(&xdr, req, &hdr);
2406 encode_create_session(&xdr, args, &hdr);
2407 encode_nops(&hdr);
2408 return 0;
2409 }
2410
2411 /*
2412 * a DESTROY_SESSION request
2413 */
2414 static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
2415 struct nfs4_session *session)
2416 {
2417 struct xdr_stream xdr;
2418 struct compound_hdr hdr = {
2419 .minorversion = session->clp->cl_minorversion,
2420 };
2421
2422 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2423 encode_compound_hdr(&xdr, req, &hdr);
2424 encode_destroy_session(&xdr, session, &hdr);
2425 encode_nops(&hdr);
2426 return 0;
2427 }
2428
2429 /*
2430 * a SEQUENCE request
2431 */
2432 static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
2433 struct nfs4_sequence_args *args)
2434 {
2435 struct xdr_stream xdr;
2436 struct compound_hdr hdr = {
2437 .minorversion = nfs4_xdr_minorversion(args),
2438 };
2439
2440 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2441 encode_compound_hdr(&xdr, req, &hdr);
2442 encode_sequence(&xdr, args, &hdr);
2443 encode_nops(&hdr);
2444 return 0;
2445 }
2446
2447 /*
2448 * a GET_LEASE_TIME request
2449 */
2450 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2451 struct nfs4_get_lease_time_args *args)
2452 {
2453 struct xdr_stream xdr;
2454 struct compound_hdr hdr = {
2455 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2456 };
2457 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2458
2459 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2460 encode_compound_hdr(&xdr, req, &hdr);
2461 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2462 encode_putrootfh(&xdr, &hdr);
2463 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2464 encode_nops(&hdr);
2465 return 0;
2466 }
2467 #endif /* CONFIG_NFS_V4_1 */
2468
2469 /*
2470 * START OF "GENERIC" DECODE ROUTINES.
2471 * These may look a little ugly since they are imported from a "generic"
2472 * set of XDR encode/decode routines which are intended to be shared by
2473 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2474 *
2475 * If the pain of reading these is too great, it should be a straightforward
2476 * task to translate them into Linux-specific versions which are more
2477 * consistent with the style used in NFSv2/v3...
2478 */
2479 #define READ32(x) (x) = ntohl(*p++)
2480 #define READ64(x) do { \
2481 (x) = (u64)ntohl(*p++) << 32; \
2482 (x) |= ntohl(*p++); \
2483 } while (0)
2484 #define READTIME(x) do { \
2485 p++; \
2486 (x.tv_sec) = ntohl(*p++); \
2487 (x.tv_nsec) = ntohl(*p++); \
2488 } while (0)
2489 #define COPYMEM(x,nbytes) do { \
2490 memcpy((x), p, nbytes); \
2491 p += XDR_QUADLEN(nbytes); \
2492 } while (0)
2493
2494 #define READ_BUF(nbytes) do { \
2495 p = xdr_inline_decode(xdr, nbytes); \
2496 if (unlikely(!p)) { \
2497 dprintk("nfs: %s: prematurely hit end of receive" \
2498 " buffer\n", __func__); \
2499 dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2500 __func__, xdr->p, nbytes, xdr->end); \
2501 return -EIO; \
2502 } \
2503 } while (0)
2504
2505 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2506 {
2507 __be32 *p;
2508
2509 READ_BUF(4);
2510 READ32(*len);
2511 READ_BUF(*len);
2512 *string = (char *)p;
2513 return 0;
2514 }
2515
2516 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2517 {
2518 __be32 *p;
2519
2520 READ_BUF(8);
2521 READ32(hdr->status);
2522 READ32(hdr->taglen);
2523
2524 READ_BUF(hdr->taglen + 4);
2525 hdr->tag = (char *)p;
2526 p += XDR_QUADLEN(hdr->taglen);
2527 READ32(hdr->nops);
2528 if (unlikely(hdr->nops < 1))
2529 return nfs4_stat_to_errno(hdr->status);
2530 return 0;
2531 }
2532
2533 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2534 {
2535 __be32 *p;
2536 uint32_t opnum;
2537 int32_t nfserr;
2538
2539 READ_BUF(8);
2540 READ32(opnum);
2541 if (opnum != expected) {
2542 dprintk("nfs: Server returned operation"
2543 " %d but we issued a request for %d\n",
2544 opnum, expected);
2545 return -EIO;
2546 }
2547 READ32(nfserr);
2548 if (nfserr != NFS_OK)
2549 return nfs4_stat_to_errno(nfserr);
2550 return 0;
2551 }
2552
2553 /* Dummy routine */
2554 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2555 {
2556 __be32 *p;
2557 unsigned int strlen;
2558 char *str;
2559
2560 READ_BUF(12);
2561 return decode_opaque_inline(xdr, &strlen, &str);
2562 }
2563
2564 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2565 {
2566 uint32_t bmlen;
2567 __be32 *p;
2568
2569 READ_BUF(4);
2570 READ32(bmlen);
2571
2572 bitmap[0] = bitmap[1] = 0;
2573 READ_BUF((bmlen << 2));
2574 if (bmlen > 0) {
2575 READ32(bitmap[0]);
2576 if (bmlen > 1)
2577 READ32(bitmap[1]);
2578 }
2579 return 0;
2580 }
2581
2582 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2583 {
2584 __be32 *p;
2585
2586 READ_BUF(4);
2587 READ32(*attrlen);
2588 *savep = xdr->p;
2589 return 0;
2590 }
2591
2592 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2593 {
2594 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2595 decode_attr_bitmap(xdr, bitmask);
2596 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2597 } else
2598 bitmask[0] = bitmask[1] = 0;
2599 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2600 return 0;
2601 }
2602
2603 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2604 {
2605 __be32 *p;
2606 int ret = 0;
2607
2608 *type = 0;
2609 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2610 return -EIO;
2611 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2612 READ_BUF(4);
2613 READ32(*type);
2614 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2615 dprintk("%s: bad type %d\n", __func__, *type);
2616 return -EIO;
2617 }
2618 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2619 ret = NFS_ATTR_FATTR_TYPE;
2620 }
2621 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2622 return ret;
2623 }
2624
2625 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2626 {
2627 __be32 *p;
2628 int ret = 0;
2629
2630 *change = 0;
2631 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2632 return -EIO;
2633 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2634 READ_BUF(8);
2635 READ64(*change);
2636 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2637 ret = NFS_ATTR_FATTR_CHANGE;
2638 }
2639 dprintk("%s: change attribute=%Lu\n", __func__,
2640 (unsigned long long)*change);
2641 return ret;
2642 }
2643
2644 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2645 {
2646 __be32 *p;
2647 int ret = 0;
2648
2649 *size = 0;
2650 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2651 return -EIO;
2652 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2653 READ_BUF(8);
2654 READ64(*size);
2655 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2656 ret = NFS_ATTR_FATTR_SIZE;
2657 }
2658 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2659 return ret;
2660 }
2661
2662 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2663 {
2664 __be32 *p;
2665
2666 *res = 0;
2667 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2668 return -EIO;
2669 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2670 READ_BUF(4);
2671 READ32(*res);
2672 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2673 }
2674 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2675 return 0;
2676 }
2677
2678 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2679 {
2680 __be32 *p;
2681
2682 *res = 0;
2683 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2684 return -EIO;
2685 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2686 READ_BUF(4);
2687 READ32(*res);
2688 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2689 }
2690 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2691 return 0;
2692 }
2693
2694 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2695 {
2696 __be32 *p;
2697 int ret = 0;
2698
2699 fsid->major = 0;
2700 fsid->minor = 0;
2701 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2702 return -EIO;
2703 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2704 READ_BUF(16);
2705 READ64(fsid->major);
2706 READ64(fsid->minor);
2707 bitmap[0] &= ~FATTR4_WORD0_FSID;
2708 ret = NFS_ATTR_FATTR_FSID;
2709 }
2710 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2711 (unsigned long long)fsid->major,
2712 (unsigned long long)fsid->minor);
2713 return ret;
2714 }
2715
2716 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2717 {
2718 __be32 *p;
2719
2720 *res = 60;
2721 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2722 return -EIO;
2723 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2724 READ_BUF(4);
2725 READ32(*res);
2726 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2727 }
2728 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2729 return 0;
2730 }
2731
2732 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2733 {
2734 __be32 *p;
2735
2736 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2737 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2738 return -EIO;
2739 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2740 READ_BUF(4);
2741 READ32(*res);
2742 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2743 }
2744 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2745 return 0;
2746 }
2747
2748 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2749 {
2750 __be32 *p;
2751 int ret = 0;
2752
2753 *fileid = 0;
2754 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2755 return -EIO;
2756 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2757 READ_BUF(8);
2758 READ64(*fileid);
2759 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2760 ret = NFS_ATTR_FATTR_FILEID;
2761 }
2762 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2763 return ret;
2764 }
2765
2766 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2767 {
2768 __be32 *p;
2769 int ret = 0;
2770
2771 *fileid = 0;
2772 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2773 return -EIO;
2774 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2775 READ_BUF(8);
2776 READ64(*fileid);
2777 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2778 ret = NFS_ATTR_FATTR_FILEID;
2779 }
2780 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2781 return ret;
2782 }
2783
2784 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2785 {
2786 __be32 *p;
2787 int status = 0;
2788
2789 *res = 0;
2790 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2791 return -EIO;
2792 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2793 READ_BUF(8);
2794 READ64(*res);
2795 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2796 }
2797 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2798 return status;
2799 }
2800
2801 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2802 {
2803 __be32 *p;
2804 int status = 0;
2805
2806 *res = 0;
2807 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2808 return -EIO;
2809 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2810 READ_BUF(8);
2811 READ64(*res);
2812 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2813 }
2814 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2815 return status;
2816 }
2817
2818 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2819 {
2820 __be32 *p;
2821 int status = 0;
2822
2823 *res = 0;
2824 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2825 return -EIO;
2826 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2827 READ_BUF(8);
2828 READ64(*res);
2829 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2830 }
2831 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2832 return status;
2833 }
2834
2835 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2836 {
2837 u32 n;
2838 __be32 *p;
2839 int status = 0;
2840
2841 READ_BUF(4);
2842 READ32(n);
2843 if (n == 0)
2844 goto root_path;
2845 dprintk("path ");
2846 path->ncomponents = 0;
2847 while (path->ncomponents < n) {
2848 struct nfs4_string *component = &path->components[path->ncomponents];
2849 status = decode_opaque_inline(xdr, &component->len, &component->data);
2850 if (unlikely(status != 0))
2851 goto out_eio;
2852 if (path->ncomponents != n)
2853 dprintk("/");
2854 dprintk("%s", component->data);
2855 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2856 path->ncomponents++;
2857 else {
2858 dprintk("cannot parse %d components in path\n", n);
2859 goto out_eio;
2860 }
2861 }
2862 out:
2863 dprintk("\n");
2864 return status;
2865 root_path:
2866 /* a root pathname is sent as a zero component4 */
2867 path->ncomponents = 1;
2868 path->components[0].len=0;
2869 path->components[0].data=NULL;
2870 dprintk("path /\n");
2871 goto out;
2872 out_eio:
2873 dprintk(" status %d", status);
2874 status = -EIO;
2875 goto out;
2876 }
2877
2878 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2879 {
2880 int n;
2881 __be32 *p;
2882 int status = -EIO;
2883
2884 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2885 goto out;
2886 status = 0;
2887 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2888 goto out;
2889 dprintk("%s: fsroot ", __func__);
2890 status = decode_pathname(xdr, &res->fs_path);
2891 if (unlikely(status != 0))
2892 goto out;
2893 READ_BUF(4);
2894 READ32(n);
2895 if (n <= 0)
2896 goto out_eio;
2897 res->nlocations = 0;
2898 while (res->nlocations < n) {
2899 u32 m;
2900 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2901
2902 READ_BUF(4);
2903 READ32(m);
2904
2905 loc->nservers = 0;
2906 dprintk("%s: servers ", __func__);
2907 while (loc->nservers < m) {
2908 struct nfs4_string *server = &loc->servers[loc->nservers];
2909 status = decode_opaque_inline(xdr, &server->len, &server->data);
2910 if (unlikely(status != 0))
2911 goto out_eio;
2912 dprintk("%s ", server->data);
2913 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2914 loc->nservers++;
2915 else {
2916 unsigned int i;
2917 dprintk("%s: using first %u of %u servers "
2918 "returned for location %u\n",
2919 __func__,
2920 NFS4_FS_LOCATION_MAXSERVERS,
2921 m, res->nlocations);
2922 for (i = loc->nservers; i < m; i++) {
2923 unsigned int len;
2924 char *data;
2925 status = decode_opaque_inline(xdr, &len, &data);
2926 if (unlikely(status != 0))
2927 goto out_eio;
2928 }
2929 }
2930 }
2931 status = decode_pathname(xdr, &loc->rootpath);
2932 if (unlikely(status != 0))
2933 goto out_eio;
2934 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2935 res->nlocations++;
2936 }
2937 if (res->nlocations != 0)
2938 status = NFS_ATTR_FATTR_V4_REFERRAL;
2939 out:
2940 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
2941 return status;
2942 out_eio:
2943 status = -EIO;
2944 goto out;
2945 }
2946
2947 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2948 {
2949 __be32 *p;
2950 int status = 0;
2951
2952 *res = 0;
2953 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2954 return -EIO;
2955 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2956 READ_BUF(8);
2957 READ64(*res);
2958 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2959 }
2960 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
2961 return status;
2962 }
2963
2964 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2965 {
2966 __be32 *p;
2967 int status = 0;
2968
2969 *maxlink = 1;
2970 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2971 return -EIO;
2972 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2973 READ_BUF(4);
2974 READ32(*maxlink);
2975 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2976 }
2977 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
2978 return status;
2979 }
2980
2981 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2982 {
2983 __be32 *p;
2984 int status = 0;
2985
2986 *maxname = 1024;
2987 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2988 return -EIO;
2989 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2990 READ_BUF(4);
2991 READ32(*maxname);
2992 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2993 }
2994 dprintk("%s: maxname=%u\n", __func__, *maxname);
2995 return status;
2996 }
2997
2998 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2999 {
3000 __be32 *p;
3001 int status = 0;
3002
3003 *res = 1024;
3004 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3005 return -EIO;
3006 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3007 uint64_t maxread;
3008 READ_BUF(8);
3009 READ64(maxread);
3010 if (maxread > 0x7FFFFFFF)
3011 maxread = 0x7FFFFFFF;
3012 *res = (uint32_t)maxread;
3013 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3014 }
3015 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3016 return status;
3017 }
3018
3019 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3020 {
3021 __be32 *p;
3022 int status = 0;
3023
3024 *res = 1024;
3025 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3026 return -EIO;
3027 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3028 uint64_t maxwrite;
3029 READ_BUF(8);
3030 READ64(maxwrite);
3031 if (maxwrite > 0x7FFFFFFF)
3032 maxwrite = 0x7FFFFFFF;
3033 *res = (uint32_t)maxwrite;
3034 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3035 }
3036 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3037 return status;
3038 }
3039
3040 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3041 {
3042 uint32_t tmp;
3043 __be32 *p;
3044 int ret = 0;
3045
3046 *mode = 0;
3047 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3048 return -EIO;
3049 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3050 READ_BUF(4);
3051 READ32(tmp);
3052 *mode = tmp & ~S_IFMT;
3053 bitmap[1] &= ~FATTR4_WORD1_MODE;
3054 ret = NFS_ATTR_FATTR_MODE;
3055 }
3056 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3057 return ret;
3058 }
3059
3060 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3061 {
3062 __be32 *p;
3063 int ret = 0;
3064
3065 *nlink = 1;
3066 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3067 return -EIO;
3068 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3069 READ_BUF(4);
3070 READ32(*nlink);
3071 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3072 ret = NFS_ATTR_FATTR_NLINK;
3073 }
3074 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3075 return ret;
3076 }
3077
3078 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3079 struct nfs_client *clp, uint32_t *uid, int may_sleep)
3080 {
3081 uint32_t len;
3082 __be32 *p;
3083 int ret = 0;
3084
3085 *uid = -2;
3086 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3087 return -EIO;
3088 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3089 READ_BUF(4);
3090 READ32(len);
3091 READ_BUF(len);
3092 if (!may_sleep) {
3093 /* do nothing */
3094 } else if (len < XDR_MAX_NETOBJ) {
3095 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3096 ret = NFS_ATTR_FATTR_OWNER;
3097 else
3098 dprintk("%s: nfs_map_name_to_uid failed!\n",
3099 __func__);
3100 } else
3101 dprintk("%s: name too long (%u)!\n",
3102 __func__, len);
3103 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3104 }
3105 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3106 return ret;
3107 }
3108
3109 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3110 struct nfs_client *clp, uint32_t *gid, int may_sleep)
3111 {
3112 uint32_t len;
3113 __be32 *p;
3114 int ret = 0;
3115
3116 *gid = -2;
3117 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3118 return -EIO;
3119 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3120 READ_BUF(4);
3121 READ32(len);
3122 READ_BUF(len);
3123 if (!may_sleep) {
3124 /* do nothing */
3125 } else if (len < XDR_MAX_NETOBJ) {
3126 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3127 ret = NFS_ATTR_FATTR_GROUP;
3128 else
3129 dprintk("%s: nfs_map_group_to_gid failed!\n",
3130 __func__);
3131 } else
3132 dprintk("%s: name too long (%u)!\n",
3133 __func__, len);
3134 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3135 }
3136 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3137 return ret;
3138 }
3139
3140 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3141 {
3142 uint32_t major = 0, minor = 0;
3143 __be32 *p;
3144 int ret = 0;
3145
3146 *rdev = MKDEV(0,0);
3147 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3148 return -EIO;
3149 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3150 dev_t tmp;
3151
3152 READ_BUF(8);
3153 READ32(major);
3154 READ32(minor);
3155 tmp = MKDEV(major, minor);
3156 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3157 *rdev = tmp;
3158 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3159 ret = NFS_ATTR_FATTR_RDEV;
3160 }
3161 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3162 return ret;
3163 }
3164
3165 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3166 {
3167 __be32 *p;
3168 int status = 0;
3169
3170 *res = 0;
3171 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3172 return -EIO;
3173 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3174 READ_BUF(8);
3175 READ64(*res);
3176 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3177 }
3178 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3179 return status;
3180 }
3181
3182 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3183 {
3184 __be32 *p;
3185 int status = 0;
3186
3187 *res = 0;
3188 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3189 return -EIO;
3190 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3191 READ_BUF(8);
3192 READ64(*res);
3193 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3194 }
3195 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3196 return status;
3197 }
3198
3199 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3200 {
3201 __be32 *p;
3202 int status = 0;
3203
3204 *res = 0;
3205 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3206 return -EIO;
3207 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3208 READ_BUF(8);
3209 READ64(*res);
3210 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3211 }
3212 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3213 return status;
3214 }
3215
3216 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3217 {
3218 __be32 *p;
3219 int ret = 0;
3220
3221 *used = 0;
3222 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3223 return -EIO;
3224 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3225 READ_BUF(8);
3226 READ64(*used);
3227 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3228 ret = NFS_ATTR_FATTR_SPACE_USED;
3229 }
3230 dprintk("%s: space used=%Lu\n", __func__,
3231 (unsigned long long)*used);
3232 return ret;
3233 }
3234
3235 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3236 {
3237 __be32 *p;
3238 uint64_t sec;
3239 uint32_t nsec;
3240
3241 READ_BUF(12);
3242 READ64(sec);
3243 READ32(nsec);
3244 time->tv_sec = (time_t)sec;
3245 time->tv_nsec = (long)nsec;
3246 return 0;
3247 }
3248
3249 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3250 {
3251 int status = 0;
3252
3253 time->tv_sec = 0;
3254 time->tv_nsec = 0;
3255 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3256 return -EIO;
3257 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3258 status = decode_attr_time(xdr, time);
3259 if (status == 0)
3260 status = NFS_ATTR_FATTR_ATIME;
3261 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3262 }
3263 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3264 return status;
3265 }
3266
3267 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3268 {
3269 int status = 0;
3270
3271 time->tv_sec = 0;
3272 time->tv_nsec = 0;
3273 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3274 return -EIO;
3275 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3276 status = decode_attr_time(xdr, time);
3277 if (status == 0)
3278 status = NFS_ATTR_FATTR_CTIME;
3279 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3280 }
3281 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3282 return status;
3283 }
3284
3285 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3286 {
3287 int status = 0;
3288
3289 time->tv_sec = 0;
3290 time->tv_nsec = 0;
3291 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3292 return -EIO;
3293 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3294 status = decode_attr_time(xdr, time);
3295 if (status == 0)
3296 status = NFS_ATTR_FATTR_MTIME;
3297 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3298 }
3299 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3300 return status;
3301 }
3302
3303 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3304 {
3305 unsigned int attrwords = XDR_QUADLEN(attrlen);
3306 unsigned int nwords = xdr->p - savep;
3307
3308 if (unlikely(attrwords != nwords)) {
3309 dprintk("%s: server returned incorrect attribute length: "
3310 "%u %c %u\n",
3311 __func__,
3312 attrwords << 2,
3313 (attrwords < nwords) ? '<' : '>',
3314 nwords << 2);
3315 return -EIO;
3316 }
3317 return 0;
3318 }
3319
3320 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3321 {
3322 __be32 *p;
3323
3324 READ_BUF(20);
3325 READ32(cinfo->atomic);
3326 READ64(cinfo->before);
3327 READ64(cinfo->after);
3328 return 0;
3329 }
3330
3331 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3332 {
3333 __be32 *p;
3334 uint32_t supp, acc;
3335 int status;
3336
3337 status = decode_op_hdr(xdr, OP_ACCESS);
3338 if (status)
3339 return status;
3340 READ_BUF(8);
3341 READ32(supp);
3342 READ32(acc);
3343 access->supported = supp;
3344 access->access = acc;
3345 return 0;
3346 }
3347
3348 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3349 {
3350 __be32 *p;
3351 int status;
3352
3353 status = decode_op_hdr(xdr, OP_CLOSE);
3354 if (status != -EIO)
3355 nfs_increment_open_seqid(status, res->seqid);
3356 if (status)
3357 return status;
3358 READ_BUF(NFS4_STATEID_SIZE);
3359 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3360 return 0;
3361 }
3362
3363 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3364 {
3365 __be32 *p;
3366 int status;
3367
3368 status = decode_op_hdr(xdr, OP_COMMIT);
3369 if (status)
3370 return status;
3371 READ_BUF(8);
3372 COPYMEM(res->verf->verifier, 8);
3373 return 0;
3374 }
3375
3376 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3377 {
3378 __be32 *p;
3379 uint32_t bmlen;
3380 int status;
3381
3382 status = decode_op_hdr(xdr, OP_CREATE);
3383 if (status)
3384 return status;
3385 if ((status = decode_change_info(xdr, cinfo)))
3386 return status;
3387 READ_BUF(4);
3388 READ32(bmlen);
3389 READ_BUF(bmlen << 2);
3390 return 0;
3391 }
3392
3393 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3394 {
3395 __be32 *savep;
3396 uint32_t attrlen, bitmap[2] = {0};
3397 int status;
3398
3399 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3400 goto xdr_error;
3401 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3402 goto xdr_error;
3403 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3404 goto xdr_error;
3405 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3406 goto xdr_error;
3407 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3408 goto xdr_error;
3409 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3410 goto xdr_error;
3411 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3412 goto xdr_error;
3413 status = verify_attr_len(xdr, savep, attrlen);
3414 xdr_error:
3415 dprintk("%s: xdr returned %d!\n", __func__, -status);
3416 return status;
3417 }
3418
3419 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3420 {
3421 __be32 *savep;
3422 uint32_t attrlen, bitmap[2] = {0};
3423 int status;
3424
3425 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3426 goto xdr_error;
3427 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3428 goto xdr_error;
3429 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3430 goto xdr_error;
3431
3432 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3433 goto xdr_error;
3434 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3435 goto xdr_error;
3436 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3437 goto xdr_error;
3438 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3439 goto xdr_error;
3440 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3441 goto xdr_error;
3442 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3443 goto xdr_error;
3444
3445 status = verify_attr_len(xdr, savep, attrlen);
3446 xdr_error:
3447 dprintk("%s: xdr returned %d!\n", __func__, -status);
3448 return status;
3449 }
3450
3451 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3452 {
3453 __be32 *savep;
3454 uint32_t attrlen, bitmap[2] = {0};
3455 int status;
3456
3457 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3458 goto xdr_error;
3459 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3460 goto xdr_error;
3461 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3462 goto xdr_error;
3463
3464 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3465 goto xdr_error;
3466 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3467 goto xdr_error;
3468
3469 status = verify_attr_len(xdr, savep, attrlen);
3470 xdr_error:
3471 dprintk("%s: xdr returned %d!\n", __func__, -status);
3472 return status;
3473 }
3474
3475 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
3476 const struct nfs_server *server, int may_sleep)
3477 {
3478 __be32 *savep;
3479 uint32_t attrlen,
3480 bitmap[2] = {0},
3481 type;
3482 int status;
3483 umode_t fmode = 0;
3484 uint64_t fileid;
3485
3486 status = decode_op_hdr(xdr, OP_GETATTR);
3487 if (status < 0)
3488 goto xdr_error;
3489
3490 status = decode_attr_bitmap(xdr, bitmap);
3491 if (status < 0)
3492 goto xdr_error;
3493
3494 status = decode_attr_length(xdr, &attrlen, &savep);
3495 if (status < 0)
3496 goto xdr_error;
3497
3498
3499 status = decode_attr_type(xdr, bitmap, &type);
3500 if (status < 0)
3501 goto xdr_error;
3502 fattr->mode = 0;
3503 if (status != 0) {
3504 fattr->mode |= nfs_type2fmt[type];
3505 fattr->valid |= status;
3506 }
3507
3508 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3509 if (status < 0)
3510 goto xdr_error;
3511 fattr->valid |= status;
3512
3513 status = decode_attr_size(xdr, bitmap, &fattr->size);
3514 if (status < 0)
3515 goto xdr_error;
3516 fattr->valid |= status;
3517
3518 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3519 if (status < 0)
3520 goto xdr_error;
3521 fattr->valid |= status;
3522
3523 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3524 if (status < 0)
3525 goto xdr_error;
3526 fattr->valid |= status;
3527
3528 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3529 struct nfs4_fs_locations,
3530 fattr));
3531 if (status < 0)
3532 goto xdr_error;
3533 fattr->valid |= status;
3534
3535 status = decode_attr_mode(xdr, bitmap, &fmode);
3536 if (status < 0)
3537 goto xdr_error;
3538 if (status != 0) {
3539 fattr->mode |= fmode;
3540 fattr->valid |= status;
3541 }
3542
3543 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3544 if (status < 0)
3545 goto xdr_error;
3546 fattr->valid |= status;
3547
3548 status = decode_attr_owner(xdr, bitmap, server->nfs_client,
3549 &fattr->uid, may_sleep);
3550 if (status < 0)
3551 goto xdr_error;
3552 fattr->valid |= status;
3553
3554 status = decode_attr_group(xdr, bitmap, server->nfs_client,
3555 &fattr->gid, may_sleep);
3556 if (status < 0)
3557 goto xdr_error;
3558 fattr->valid |= status;
3559
3560 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3561 if (status < 0)
3562 goto xdr_error;
3563 fattr->valid |= status;
3564
3565 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3566 if (status < 0)
3567 goto xdr_error;
3568 fattr->valid |= status;
3569
3570 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3571 if (status < 0)
3572 goto xdr_error;
3573 fattr->valid |= status;
3574
3575 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3576 if (status < 0)
3577 goto xdr_error;
3578 fattr->valid |= status;
3579
3580 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3581 if (status < 0)
3582 goto xdr_error;
3583 fattr->valid |= status;
3584
3585 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3586 if (status < 0)
3587 goto xdr_error;
3588 if (status != 0 && !(fattr->valid & status)) {
3589 fattr->fileid = fileid;
3590 fattr->valid |= status;
3591 }
3592
3593 status = verify_attr_len(xdr, savep, attrlen);
3594 xdr_error:
3595 dprintk("%s: xdr returned %d\n", __func__, -status);
3596 return status;
3597 }
3598
3599
3600 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3601 {
3602 __be32 *savep;
3603 uint32_t attrlen, bitmap[2];
3604 int status;
3605
3606 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3607 goto xdr_error;
3608 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3609 goto xdr_error;
3610 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3611 goto xdr_error;
3612
3613 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3614
3615 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3616 goto xdr_error;
3617 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3618 goto xdr_error;
3619 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3620 goto xdr_error;
3621 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3622 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3623 goto xdr_error;
3624 fsinfo->wtpref = fsinfo->wtmax;
3625
3626 status = verify_attr_len(xdr, savep, attrlen);
3627 xdr_error:
3628 dprintk("%s: xdr returned %d!\n", __func__, -status);
3629 return status;
3630 }
3631
3632 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3633 {
3634 __be32 *p;
3635 uint32_t len;
3636 int status;
3637
3638 /* Zero handle first to allow comparisons */
3639 memset(fh, 0, sizeof(*fh));
3640
3641 status = decode_op_hdr(xdr, OP_GETFH);
3642 if (status)
3643 return status;
3644
3645 READ_BUF(4);
3646 READ32(len);
3647 if (len > NFS4_FHSIZE)
3648 return -EIO;
3649 fh->size = len;
3650 READ_BUF(len);
3651 COPYMEM(fh->data, len);
3652 return 0;
3653 }
3654
3655 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3656 {
3657 int status;
3658
3659 status = decode_op_hdr(xdr, OP_LINK);
3660 if (status)
3661 return status;
3662 return decode_change_info(xdr, cinfo);
3663 }
3664
3665 /*
3666 * We create the owner, so we know a proper owner.id length is 4.
3667 */
3668 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3669 {
3670 uint64_t offset, length, clientid;
3671 __be32 *p;
3672 uint32_t namelen, type;
3673
3674 READ_BUF(32);
3675 READ64(offset);
3676 READ64(length);
3677 READ32(type);
3678 if (fl != NULL) {
3679 fl->fl_start = (loff_t)offset;
3680 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3681 if (length == ~(uint64_t)0)
3682 fl->fl_end = OFFSET_MAX;
3683 fl->fl_type = F_WRLCK;
3684 if (type & 1)
3685 fl->fl_type = F_RDLCK;
3686 fl->fl_pid = 0;
3687 }
3688 READ64(clientid);
3689 READ32(namelen);
3690 READ_BUF(namelen);
3691 return -NFS4ERR_DENIED;
3692 }
3693
3694 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3695 {
3696 __be32 *p;
3697 int status;
3698
3699 status = decode_op_hdr(xdr, OP_LOCK);
3700 if (status == -EIO)
3701 goto out;
3702 if (status == 0) {
3703 READ_BUF(NFS4_STATEID_SIZE);
3704 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3705 } else if (status == -NFS4ERR_DENIED)
3706 status = decode_lock_denied(xdr, NULL);
3707 if (res->open_seqid != NULL)
3708 nfs_increment_open_seqid(status, res->open_seqid);
3709 nfs_increment_lock_seqid(status, res->lock_seqid);
3710 out:
3711 return status;
3712 }
3713
3714 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3715 {
3716 int status;
3717 status = decode_op_hdr(xdr, OP_LOCKT);
3718 if (status == -NFS4ERR_DENIED)
3719 return decode_lock_denied(xdr, res->denied);
3720 return status;
3721 }
3722
3723 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3724 {
3725 __be32 *p;
3726 int status;
3727
3728 status = decode_op_hdr(xdr, OP_LOCKU);
3729 if (status != -EIO)
3730 nfs_increment_lock_seqid(status, res->seqid);
3731 if (status == 0) {
3732 READ_BUF(NFS4_STATEID_SIZE);
3733 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3734 }
3735 return status;
3736 }
3737
3738 static int decode_lookup(struct xdr_stream *xdr)
3739 {
3740 return decode_op_hdr(xdr, OP_LOOKUP);
3741 }
3742
3743 /* This is too sick! */
3744 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3745 {
3746 __be32 *p;
3747 uint32_t limit_type, nblocks, blocksize;
3748
3749 READ_BUF(12);
3750 READ32(limit_type);
3751 switch (limit_type) {
3752 case 1:
3753 READ64(*maxsize);
3754 break;
3755 case 2:
3756 READ32(nblocks);
3757 READ32(blocksize);
3758 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3759 }
3760 return 0;
3761 }
3762
3763 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3764 {
3765 __be32 *p;
3766 uint32_t delegation_type;
3767
3768 READ_BUF(4);
3769 READ32(delegation_type);
3770 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3771 res->delegation_type = 0;
3772 return 0;
3773 }
3774 READ_BUF(NFS4_STATEID_SIZE+4);
3775 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
3776 READ32(res->do_recall);
3777
3778 switch (delegation_type) {
3779 case NFS4_OPEN_DELEGATE_READ:
3780 res->delegation_type = FMODE_READ;
3781 break;
3782 case NFS4_OPEN_DELEGATE_WRITE:
3783 res->delegation_type = FMODE_WRITE|FMODE_READ;
3784 if (decode_space_limit(xdr, &res->maxsize) < 0)
3785 return -EIO;
3786 }
3787 return decode_ace(xdr, NULL, res->server->nfs_client);
3788 }
3789
3790 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3791 {
3792 __be32 *p;
3793 uint32_t savewords, bmlen, i;
3794 int status;
3795
3796 status = decode_op_hdr(xdr, OP_OPEN);
3797 if (status != -EIO)
3798 nfs_increment_open_seqid(status, res->seqid);
3799 if (status)
3800 return status;
3801 READ_BUF(NFS4_STATEID_SIZE);
3802 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3803
3804 decode_change_info(xdr, &res->cinfo);
3805
3806 READ_BUF(8);
3807 READ32(res->rflags);
3808 READ32(bmlen);
3809 if (bmlen > 10)
3810 goto xdr_error;
3811
3812 READ_BUF(bmlen << 2);
3813 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3814 for (i = 0; i < savewords; ++i)
3815 READ32(res->attrset[i]);
3816 for (; i < NFS4_BITMAP_SIZE; i++)
3817 res->attrset[i] = 0;
3818
3819 return decode_delegation(xdr, res);
3820 xdr_error:
3821 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
3822 return -EIO;
3823 }
3824
3825 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3826 {
3827 __be32 *p;
3828 int status;
3829
3830 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3831 if (status != -EIO)
3832 nfs_increment_open_seqid(status, res->seqid);
3833 if (status)
3834 return status;
3835 READ_BUF(NFS4_STATEID_SIZE);
3836 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3837 return 0;
3838 }
3839
3840 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3841 {
3842 __be32 *p;
3843 int status;
3844
3845 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3846 if (status != -EIO)
3847 nfs_increment_open_seqid(status, res->seqid);
3848 if (status)
3849 return status;
3850 READ_BUF(NFS4_STATEID_SIZE);
3851 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3852 return 0;
3853 }
3854
3855 static int decode_putfh(struct xdr_stream *xdr)
3856 {
3857 return decode_op_hdr(xdr, OP_PUTFH);
3858 }
3859
3860 static int decode_putrootfh(struct xdr_stream *xdr)
3861 {
3862 return decode_op_hdr(xdr, OP_PUTROOTFH);
3863 }
3864
3865 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3866 {
3867 struct kvec *iov = req->rq_rcv_buf.head;
3868 __be32 *p;
3869 uint32_t count, eof, recvd, hdrlen;
3870 int status;
3871
3872 status = decode_op_hdr(xdr, OP_READ);
3873 if (status)
3874 return status;
3875 READ_BUF(8);
3876 READ32(eof);
3877 READ32(count);
3878 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3879 recvd = req->rq_rcv_buf.len - hdrlen;
3880 if (count > recvd) {
3881 dprintk("NFS: server cheating in read reply: "
3882 "count %u > recvd %u\n", count, recvd);
3883 count = recvd;
3884 eof = 0;
3885 }
3886 xdr_read_pages(xdr, count);
3887 res->eof = eof;
3888 res->count = count;
3889 return 0;
3890 }
3891
3892 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3893 {
3894 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3895 struct page *page = *rcvbuf->pages;
3896 struct kvec *iov = rcvbuf->head;
3897 size_t hdrlen;
3898 u32 recvd, pglen = rcvbuf->page_len;
3899 __be32 *end, *entry, *p, *kaddr;
3900 unsigned int nr = 0;
3901 int status;
3902
3903 status = decode_op_hdr(xdr, OP_READDIR);
3904 if (status)
3905 return status;
3906 READ_BUF(8);
3907 COPYMEM(readdir->verifier.data, 8);
3908 dprintk("%s: verifier = %08x:%08x\n",
3909 __func__,
3910 ((u32 *)readdir->verifier.data)[0],
3911 ((u32 *)readdir->verifier.data)[1]);
3912
3913
3914 hdrlen = (char *) p - (char *) iov->iov_base;
3915 recvd = rcvbuf->len - hdrlen;
3916 if (pglen > recvd)
3917 pglen = recvd;
3918 xdr_read_pages(xdr, pglen);
3919
3920 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3921 kaddr = p = kmap_atomic(page, KM_USER0);
3922 end = p + ((pglen + readdir->pgbase) >> 2);
3923 entry = p;
3924
3925 /* Make sure the packet actually has a value_follows and EOF entry */
3926 if ((entry + 1) > end)
3927 goto short_pkt;
3928
3929 for (; *p++; nr++) {
3930 u32 len, attrlen, xlen;
3931 if (end - p < 3)
3932 goto short_pkt;
3933 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3934 p += 2; /* cookie */
3935 len = ntohl(*p++); /* filename length */
3936 if (len > NFS4_MAXNAMLEN) {
3937 dprintk("NFS: giant filename in readdir (len 0x%x)\n",
3938 len);
3939 goto err_unmap;
3940 }
3941 xlen = XDR_QUADLEN(len);
3942 if (end - p < xlen + 1)
3943 goto short_pkt;
3944 dprintk("filename = %*s\n", len, (char *)p);
3945 p += xlen;
3946 len = ntohl(*p++); /* bitmap length */
3947 if (end - p < len + 1)
3948 goto short_pkt;
3949 p += len;
3950 attrlen = XDR_QUADLEN(ntohl(*p++));
3951 if (end - p < attrlen + 2)
3952 goto short_pkt;
3953 p += attrlen; /* attributes */
3954 entry = p;
3955 }
3956 /*
3957 * Apparently some server sends responses that are a valid size, but
3958 * contain no entries, and have value_follows==0 and EOF==0. For
3959 * those, just set the EOF marker.
3960 */
3961 if (!nr && entry[1] == 0) {
3962 dprintk("NFS: readdir reply truncated!\n");
3963 entry[1] = 1;
3964 }
3965 out:
3966 kunmap_atomic(kaddr, KM_USER0);
3967 return 0;
3968 short_pkt:
3969 /*
3970 * When we get a short packet there are 2 possibilities. We can
3971 * return an error, or fix up the response to look like a valid
3972 * response and return what we have so far. If there are no
3973 * entries and the packet was short, then return -EIO. If there
3974 * are valid entries in the response, return them and pretend that
3975 * the call was successful, but incomplete. The caller can retry the
3976 * readdir starting at the last cookie.
3977 */
3978 dprintk("%s: short packet at entry %d\n", __func__, nr);
3979 entry[0] = entry[1] = 0;
3980 if (nr)
3981 goto out;
3982 err_unmap:
3983 kunmap_atomic(kaddr, KM_USER0);
3984 return -errno_NFSERR_IO;
3985 }
3986
3987 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3988 {
3989 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3990 struct kvec *iov = rcvbuf->head;
3991 size_t hdrlen;
3992 u32 len, recvd;
3993 __be32 *p;
3994 char *kaddr;
3995 int status;
3996
3997 status = decode_op_hdr(xdr, OP_READLINK);
3998 if (status)
3999 return status;
4000
4001 /* Convert length of symlink */
4002 READ_BUF(4);
4003 READ32(len);
4004 if (len >= rcvbuf->page_len || len <= 0) {
4005 dprintk("nfs: server returned giant symlink!\n");
4006 return -ENAMETOOLONG;
4007 }
4008 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4009 recvd = req->rq_rcv_buf.len - hdrlen;
4010 if (recvd < len) {
4011 dprintk("NFS: server cheating in readlink reply: "
4012 "count %u > recvd %u\n", len, recvd);
4013 return -EIO;
4014 }
4015 xdr_read_pages(xdr, len);
4016 /*
4017 * The XDR encode routine has set things up so that
4018 * the link text will be copied directly into the
4019 * buffer. We just have to do overflow-checking,
4020 * and and null-terminate the text (the VFS expects
4021 * null-termination).
4022 */
4023 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
4024 kaddr[len+rcvbuf->page_base] = '\0';
4025 kunmap_atomic(kaddr, KM_USER0);
4026 return 0;
4027 }
4028
4029 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4030 {
4031 int status;
4032
4033 status = decode_op_hdr(xdr, OP_REMOVE);
4034 if (status)
4035 goto out;
4036 status = decode_change_info(xdr, cinfo);
4037 out:
4038 return status;
4039 }
4040
4041 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4042 struct nfs4_change_info *new_cinfo)
4043 {
4044 int status;
4045
4046 status = decode_op_hdr(xdr, OP_RENAME);
4047 if (status)
4048 goto out;
4049 if ((status = decode_change_info(xdr, old_cinfo)))
4050 goto out;
4051 status = decode_change_info(xdr, new_cinfo);
4052 out:
4053 return status;
4054 }
4055
4056 static int decode_renew(struct xdr_stream *xdr)
4057 {
4058 return decode_op_hdr(xdr, OP_RENEW);
4059 }
4060
4061 static int
4062 decode_restorefh(struct xdr_stream *xdr)
4063 {
4064 return decode_op_hdr(xdr, OP_RESTOREFH);
4065 }
4066
4067 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4068 size_t *acl_len)
4069 {
4070 __be32 *savep;
4071 uint32_t attrlen,
4072 bitmap[2] = {0};
4073 struct kvec *iov = req->rq_rcv_buf.head;
4074 int status;
4075
4076 *acl_len = 0;
4077 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4078 goto out;
4079 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4080 goto out;
4081 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4082 goto out;
4083
4084 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4085 return -EIO;
4086 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4087 size_t hdrlen;
4088 u32 recvd;
4089
4090 /* We ignore &savep and don't do consistency checks on
4091 * the attr length. Let userspace figure it out.... */
4092 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4093 recvd = req->rq_rcv_buf.len - hdrlen;
4094 if (attrlen > recvd) {
4095 dprintk("NFS: server cheating in getattr"
4096 " acl reply: attrlen %u > recvd %u\n",
4097 attrlen, recvd);
4098 return -EINVAL;
4099 }
4100 xdr_read_pages(xdr, attrlen);
4101 *acl_len = attrlen;
4102 } else
4103 status = -EOPNOTSUPP;
4104
4105 out:
4106 return status;
4107 }
4108
4109 static int
4110 decode_savefh(struct xdr_stream *xdr)
4111 {
4112 return decode_op_hdr(xdr, OP_SAVEFH);
4113 }
4114
4115 static int decode_setattr(struct xdr_stream *xdr)
4116 {
4117 __be32 *p;
4118 uint32_t bmlen;
4119 int status;
4120
4121 status = decode_op_hdr(xdr, OP_SETATTR);
4122 if (status)
4123 return status;
4124 READ_BUF(4);
4125 READ32(bmlen);
4126 READ_BUF(bmlen << 2);
4127 return 0;
4128 }
4129
4130 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
4131 {
4132 __be32 *p;
4133 uint32_t opnum;
4134 int32_t nfserr;
4135
4136 READ_BUF(8);
4137 READ32(opnum);
4138 if (opnum != OP_SETCLIENTID) {
4139 dprintk("nfs: decode_setclientid: Server returned operation"
4140 " %d\n", opnum);
4141 return -EIO;
4142 }
4143 READ32(nfserr);
4144 if (nfserr == NFS_OK) {
4145 READ_BUF(8 + NFS4_VERIFIER_SIZE);
4146 READ64(clp->cl_clientid);
4147 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
4148 } else if (nfserr == NFSERR_CLID_INUSE) {
4149 uint32_t len;
4150
4151 /* skip netid string */
4152 READ_BUF(4);
4153 READ32(len);
4154 READ_BUF(len);
4155
4156 /* skip uaddr string */
4157 READ_BUF(4);
4158 READ32(len);
4159 READ_BUF(len);
4160 return -NFSERR_CLID_INUSE;
4161 } else
4162 return nfs4_stat_to_errno(nfserr);
4163
4164 return 0;
4165 }
4166
4167 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4168 {
4169 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4170 }
4171
4172 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4173 {
4174 __be32 *p;
4175 int status;
4176
4177 status = decode_op_hdr(xdr, OP_WRITE);
4178 if (status)
4179 return status;
4180
4181 READ_BUF(16);
4182 READ32(res->count);
4183 READ32(res->verf->committed);
4184 COPYMEM(res->verf->verifier, 8);
4185 return 0;
4186 }
4187
4188 static int decode_delegreturn(struct xdr_stream *xdr)
4189 {
4190 return decode_op_hdr(xdr, OP_DELEGRETURN);
4191 }
4192
4193 #if defined(CONFIG_NFS_V4_1)
4194 static int decode_exchange_id(struct xdr_stream *xdr,
4195 struct nfs41_exchange_id_res *res)
4196 {
4197 __be32 *p;
4198 uint32_t dummy;
4199 int status;
4200 struct nfs_client *clp = res->client;
4201
4202 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4203 if (status)
4204 return status;
4205
4206 READ_BUF(8);
4207 READ64(clp->cl_ex_clid);
4208 READ_BUF(12);
4209 READ32(clp->cl_seqid);
4210 READ32(clp->cl_exchange_flags);
4211
4212 /* We ask for SP4_NONE */
4213 READ32(dummy);
4214 if (dummy != SP4_NONE)
4215 return -EIO;
4216
4217 /* Throw away minor_id */
4218 READ_BUF(8);
4219
4220 /* Throw away Major id */
4221 READ_BUF(4);
4222 READ32(dummy);
4223 READ_BUF(dummy);
4224
4225 /* Throw away server_scope */
4226 READ_BUF(4);
4227 READ32(dummy);
4228 READ_BUF(dummy);
4229
4230 /* Throw away Implementation id array */
4231 READ_BUF(4);
4232 READ32(dummy);
4233 READ_BUF(dummy);
4234
4235 return 0;
4236 }
4237
4238 static int decode_chan_attrs(struct xdr_stream *xdr,
4239 struct nfs4_channel_attrs *attrs)
4240 {
4241 __be32 *p;
4242 u32 nr_attrs;
4243
4244 READ_BUF(28);
4245 READ32(attrs->headerpadsz);
4246 READ32(attrs->max_rqst_sz);
4247 READ32(attrs->max_resp_sz);
4248 READ32(attrs->max_resp_sz_cached);
4249 READ32(attrs->max_ops);
4250 READ32(attrs->max_reqs);
4251 READ32(nr_attrs);
4252 if (unlikely(nr_attrs > 1)) {
4253 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4254 __func__, nr_attrs);
4255 return -EINVAL;
4256 }
4257 if (nr_attrs == 1)
4258 READ_BUF(4); /* skip rdma_attrs */
4259 return 0;
4260 }
4261
4262 static int decode_create_session(struct xdr_stream *xdr,
4263 struct nfs41_create_session_res *res)
4264 {
4265 __be32 *p;
4266 int status;
4267 struct nfs_client *clp = res->client;
4268 struct nfs4_session *session = clp->cl_session;
4269
4270 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
4271
4272 if (status)
4273 return status;
4274
4275 /* sessionid */
4276 READ_BUF(NFS4_MAX_SESSIONID_LEN);
4277 COPYMEM(&session->sess_id, NFS4_MAX_SESSIONID_LEN);
4278
4279 /* seqid, flags */
4280 READ_BUF(8);
4281 READ32(clp->cl_seqid);
4282 READ32(session->flags);
4283
4284 /* Channel attributes */
4285 status = decode_chan_attrs(xdr, &session->fc_attrs);
4286 if (!status)
4287 status = decode_chan_attrs(xdr, &session->bc_attrs);
4288 return status;
4289 }
4290
4291 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4292 {
4293 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4294 }
4295 #endif /* CONFIG_NFS_V4_1 */
4296
4297 static int decode_sequence(struct xdr_stream *xdr,
4298 struct nfs4_sequence_res *res,
4299 struct rpc_rqst *rqstp)
4300 {
4301 #if defined(CONFIG_NFS_V4_1)
4302 struct nfs4_slot *slot;
4303 struct nfs4_sessionid id;
4304 u32 dummy;
4305 int status;
4306 __be32 *p;
4307
4308 if (!res->sr_session)
4309 return 0;
4310
4311 status = decode_op_hdr(xdr, OP_SEQUENCE);
4312 if (status)
4313 goto out_err;
4314
4315 /*
4316 * If the server returns different values for sessionID, slotID or
4317 * sequence number, the server is looney tunes.
4318 */
4319 status = -ESERVERFAULT;
4320
4321 slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid];
4322 READ_BUF(NFS4_MAX_SESSIONID_LEN + 20);
4323 COPYMEM(id.data, NFS4_MAX_SESSIONID_LEN);
4324 if (memcmp(id.data, res->sr_session->sess_id.data,
4325 NFS4_MAX_SESSIONID_LEN)) {
4326 dprintk("%s Invalid session id\n", __func__);
4327 goto out_err;
4328 }
4329 /* seqid */
4330 READ32(dummy);
4331 if (dummy != slot->seq_nr) {
4332 dprintk("%s Invalid sequence number\n", __func__);
4333 goto out_err;
4334 }
4335 /* slot id */
4336 READ32(dummy);
4337 if (dummy != res->sr_slotid) {
4338 dprintk("%s Invalid slot id\n", __func__);
4339 goto out_err;
4340 }
4341 /* highest slot id - currently not processed */
4342 READ32(dummy);
4343 /* target highest slot id - currently not processed */
4344 READ32(dummy);
4345 /* result flags - currently not processed */
4346 READ32(dummy);
4347 status = 0;
4348 out_err:
4349 res->sr_status = status;
4350 return status;
4351 #else /* CONFIG_NFS_V4_1 */
4352 return 0;
4353 #endif /* CONFIG_NFS_V4_1 */
4354 }
4355
4356 /*
4357 * END OF "GENERIC" DECODE ROUTINES.
4358 */
4359
4360 /*
4361 * Decode OPEN_DOWNGRADE response
4362 */
4363 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4364 {
4365 struct xdr_stream xdr;
4366 struct compound_hdr hdr;
4367 int status;
4368
4369 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4370 status = decode_compound_hdr(&xdr, &hdr);
4371 if (status)
4372 goto out;
4373 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4374 if (status)
4375 goto out;
4376 status = decode_putfh(&xdr);
4377 if (status)
4378 goto out;
4379 status = decode_open_downgrade(&xdr, res);
4380 if (status != 0)
4381 goto out;
4382 decode_getfattr(&xdr, res->fattr, res->server,
4383 !RPC_IS_ASYNC(rqstp->rq_task));
4384 out:
4385 return status;
4386 }
4387
4388 /*
4389 * Decode ACCESS response
4390 */
4391 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
4392 {
4393 struct xdr_stream xdr;
4394 struct compound_hdr hdr;
4395 int status;
4396
4397 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4398 status = decode_compound_hdr(&xdr, &hdr);
4399 if (status)
4400 goto out;
4401 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4402 if (status)
4403 goto out;
4404 status = decode_putfh(&xdr);
4405 if (status != 0)
4406 goto out;
4407 status = decode_access(&xdr, res);
4408 if (status != 0)
4409 goto out;
4410 decode_getfattr(&xdr, res->fattr, res->server,
4411 !RPC_IS_ASYNC(rqstp->rq_task));
4412 out:
4413 return status;
4414 }
4415
4416 /*
4417 * Decode LOOKUP response
4418 */
4419 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4420 {
4421 struct xdr_stream xdr;
4422 struct compound_hdr hdr;
4423 int status;
4424
4425 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4426 status = decode_compound_hdr(&xdr, &hdr);
4427 if (status)
4428 goto out;
4429 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4430 if (status)
4431 goto out;
4432 if ((status = decode_putfh(&xdr)) != 0)
4433 goto out;
4434 if ((status = decode_lookup(&xdr)) != 0)
4435 goto out;
4436 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4437 goto out;
4438 status = decode_getfattr(&xdr, res->fattr, res->server
4439 ,!RPC_IS_ASYNC(rqstp->rq_task));
4440 out:
4441 return status;
4442 }
4443
4444 /*
4445 * Decode LOOKUP_ROOT response
4446 */
4447 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4448 {
4449 struct xdr_stream xdr;
4450 struct compound_hdr hdr;
4451 int status;
4452
4453 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4454 status = decode_compound_hdr(&xdr, &hdr);
4455 if (status)
4456 goto out;
4457 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4458 if (status)
4459 goto out;
4460 if ((status = decode_putrootfh(&xdr)) != 0)
4461 goto out;
4462 if ((status = decode_getfh(&xdr, res->fh)) == 0)
4463 status = decode_getfattr(&xdr, res->fattr, res->server,
4464 !RPC_IS_ASYNC(rqstp->rq_task));
4465 out:
4466 return status;
4467 }
4468
4469 /*
4470 * Decode REMOVE response
4471 */
4472 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
4473 {
4474 struct xdr_stream xdr;
4475 struct compound_hdr hdr;
4476 int status;
4477
4478 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4479 status = decode_compound_hdr(&xdr, &hdr);
4480 if (status)
4481 goto out;
4482 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4483 if (status)
4484 goto out;
4485 if ((status = decode_putfh(&xdr)) != 0)
4486 goto out;
4487 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
4488 goto out;
4489 decode_getfattr(&xdr, &res->dir_attr, res->server,
4490 !RPC_IS_ASYNC(rqstp->rq_task));
4491 out:
4492 return status;
4493 }
4494
4495 /*
4496 * Decode RENAME response
4497 */
4498 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
4499 {
4500 struct xdr_stream xdr;
4501 struct compound_hdr hdr;
4502 int status;
4503
4504 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4505 status = decode_compound_hdr(&xdr, &hdr);
4506 if (status)
4507 goto out;
4508 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4509 if (status)
4510 goto out;
4511 if ((status = decode_putfh(&xdr)) != 0)
4512 goto out;
4513 if ((status = decode_savefh(&xdr)) != 0)
4514 goto out;
4515 if ((status = decode_putfh(&xdr)) != 0)
4516 goto out;
4517 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4518 goto out;
4519 /* Current FH is target directory */
4520 if (decode_getfattr(&xdr, res->new_fattr, res->server,
4521 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4522 goto out;
4523 if ((status = decode_restorefh(&xdr)) != 0)
4524 goto out;
4525 decode_getfattr(&xdr, res->old_fattr, res->server,
4526 !RPC_IS_ASYNC(rqstp->rq_task));
4527 out:
4528 return status;
4529 }
4530
4531 /*
4532 * Decode LINK response
4533 */
4534 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4535 {
4536 struct xdr_stream xdr;
4537 struct compound_hdr hdr;
4538 int status;
4539
4540 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4541 status = decode_compound_hdr(&xdr, &hdr);
4542 if (status)
4543 goto out;
4544 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4545 if (status)
4546 goto out;
4547 if ((status = decode_putfh(&xdr)) != 0)
4548 goto out;
4549 if ((status = decode_savefh(&xdr)) != 0)
4550 goto out;
4551 if ((status = decode_putfh(&xdr)) != 0)
4552 goto out;
4553 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4554 goto out;
4555 /*
4556 * Note order: OP_LINK leaves the directory as the current
4557 * filehandle.
4558 */
4559 if (decode_getfattr(&xdr, res->dir_attr, res->server,
4560 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4561 goto out;
4562 if ((status = decode_restorefh(&xdr)) != 0)
4563 goto out;
4564 decode_getfattr(&xdr, res->fattr, res->server,
4565 !RPC_IS_ASYNC(rqstp->rq_task));
4566 out:
4567 return status;
4568 }
4569
4570 /*
4571 * Decode CREATE response
4572 */
4573 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4574 {
4575 struct xdr_stream xdr;
4576 struct compound_hdr hdr;
4577 int status;
4578
4579 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4580 status = decode_compound_hdr(&xdr, &hdr);
4581 if (status)
4582 goto out;
4583 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4584 if (status)
4585 goto out;
4586 if ((status = decode_putfh(&xdr)) != 0)
4587 goto out;
4588 if ((status = decode_savefh(&xdr)) != 0)
4589 goto out;
4590 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4591 goto out;
4592 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4593 goto out;
4594 if (decode_getfattr(&xdr, res->fattr, res->server,
4595 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4596 goto out;
4597 if ((status = decode_restorefh(&xdr)) != 0)
4598 goto out;
4599 decode_getfattr(&xdr, res->dir_fattr, res->server,
4600 !RPC_IS_ASYNC(rqstp->rq_task));
4601 out:
4602 return status;
4603 }
4604
4605 /*
4606 * Decode SYMLINK response
4607 */
4608 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4609 {
4610 return nfs4_xdr_dec_create(rqstp, p, res);
4611 }
4612
4613 /*
4614 * Decode GETATTR response
4615 */
4616 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
4617 {
4618 struct xdr_stream xdr;
4619 struct compound_hdr hdr;
4620 int status;
4621
4622 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4623 status = decode_compound_hdr(&xdr, &hdr);
4624 if (status)
4625 goto out;
4626 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4627 if (status)
4628 goto out;
4629 status = decode_putfh(&xdr);
4630 if (status)
4631 goto out;
4632 status = decode_getfattr(&xdr, res->fattr, res->server,
4633 !RPC_IS_ASYNC(rqstp->rq_task));
4634 out:
4635 return status;
4636 }
4637
4638 /*
4639 * Encode an SETACL request
4640 */
4641 static int
4642 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
4643 {
4644 struct xdr_stream xdr;
4645 struct compound_hdr hdr = {
4646 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
4647 };
4648 int status;
4649
4650 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
4651 encode_compound_hdr(&xdr, req, &hdr);
4652 encode_sequence(&xdr, &args->seq_args, &hdr);
4653 encode_putfh(&xdr, args->fh, &hdr);
4654 status = encode_setacl(&xdr, args, &hdr);
4655 encode_nops(&hdr);
4656 return status;
4657 }
4658
4659 /*
4660 * Decode SETACL response
4661 */
4662 static int
4663 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
4664 struct nfs_setaclres *res)
4665 {
4666 struct xdr_stream xdr;
4667 struct compound_hdr hdr;
4668 int status;
4669
4670 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4671 status = decode_compound_hdr(&xdr, &hdr);
4672 if (status)
4673 goto out;
4674 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4675 if (status)
4676 goto out;
4677 status = decode_putfh(&xdr);
4678 if (status)
4679 goto out;
4680 status = decode_setattr(&xdr);
4681 out:
4682 return status;
4683 }
4684
4685 /*
4686 * Decode GETACL response
4687 */
4688 static int
4689 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
4690 struct nfs_getaclres *res)
4691 {
4692 struct xdr_stream xdr;
4693 struct compound_hdr hdr;
4694 int status;
4695
4696 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4697 status = decode_compound_hdr(&xdr, &hdr);
4698 if (status)
4699 goto out;
4700 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4701 if (status)
4702 goto out;
4703 status = decode_putfh(&xdr);
4704 if (status)
4705 goto out;
4706 status = decode_getacl(&xdr, rqstp, &res->acl_len);
4707
4708 out:
4709 return status;
4710 }
4711
4712 /*
4713 * Decode CLOSE response
4714 */
4715 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4716 {
4717 struct xdr_stream xdr;
4718 struct compound_hdr hdr;
4719 int status;
4720
4721 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4722 status = decode_compound_hdr(&xdr, &hdr);
4723 if (status)
4724 goto out;
4725 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4726 if (status)
4727 goto out;
4728 status = decode_putfh(&xdr);
4729 if (status)
4730 goto out;
4731 status = decode_close(&xdr, res);
4732 if (status != 0)
4733 goto out;
4734 /*
4735 * Note: Server may do delete on close for this file
4736 * in which case the getattr call will fail with
4737 * an ESTALE error. Shouldn't be a problem,
4738 * though, since fattr->valid will remain unset.
4739 */
4740 decode_getfattr(&xdr, res->fattr, res->server,
4741 !RPC_IS_ASYNC(rqstp->rq_task));
4742 out:
4743 return status;
4744 }
4745
4746 /*
4747 * Decode OPEN response
4748 */
4749 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4750 {
4751 struct xdr_stream xdr;
4752 struct compound_hdr hdr;
4753 int status;
4754
4755 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4756 status = decode_compound_hdr(&xdr, &hdr);
4757 if (status)
4758 goto out;
4759 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4760 if (status)
4761 goto out;
4762 status = decode_putfh(&xdr);
4763 if (status)
4764 goto out;
4765 status = decode_savefh(&xdr);
4766 if (status)
4767 goto out;
4768 status = decode_open(&xdr, res);
4769 if (status)
4770 goto out;
4771 if (decode_getfh(&xdr, &res->fh) != 0)
4772 goto out;
4773 if (decode_getfattr(&xdr, res->f_attr, res->server,
4774 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4775 goto out;
4776 if (decode_restorefh(&xdr) != 0)
4777 goto out;
4778 decode_getfattr(&xdr, res->dir_attr, res->server,
4779 !RPC_IS_ASYNC(rqstp->rq_task));
4780 out:
4781 return status;
4782 }
4783
4784 /*
4785 * Decode OPEN_CONFIRM response
4786 */
4787 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
4788 {
4789 struct xdr_stream xdr;
4790 struct compound_hdr hdr;
4791 int status;
4792
4793 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4794 status = decode_compound_hdr(&xdr, &hdr);
4795 if (status)
4796 goto out;
4797 status = decode_putfh(&xdr);
4798 if (status)
4799 goto out;
4800 status = decode_open_confirm(&xdr, res);
4801 out:
4802 return status;
4803 }
4804
4805 /*
4806 * Decode OPEN response
4807 */
4808 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4809 {
4810 struct xdr_stream xdr;
4811 struct compound_hdr hdr;
4812 int status;
4813
4814 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4815 status = decode_compound_hdr(&xdr, &hdr);
4816 if (status)
4817 goto out;
4818 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4819 if (status)
4820 goto out;
4821 status = decode_putfh(&xdr);
4822 if (status)
4823 goto out;
4824 status = decode_open(&xdr, res);
4825 if (status)
4826 goto out;
4827 decode_getfattr(&xdr, res->f_attr, res->server,
4828 !RPC_IS_ASYNC(rqstp->rq_task));
4829 out:
4830 return status;
4831 }
4832
4833 /*
4834 * Decode SETATTR response
4835 */
4836 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4837 {
4838 struct xdr_stream xdr;
4839 struct compound_hdr hdr;
4840 int status;
4841
4842 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4843 status = decode_compound_hdr(&xdr, &hdr);
4844 if (status)
4845 goto out;
4846 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4847 if (status)
4848 goto out;
4849 status = decode_putfh(&xdr);
4850 if (status)
4851 goto out;
4852 status = decode_setattr(&xdr);
4853 if (status)
4854 goto out;
4855 decode_getfattr(&xdr, res->fattr, res->server,
4856 !RPC_IS_ASYNC(rqstp->rq_task));
4857 out:
4858 return status;
4859 }
4860
4861 /*
4862 * Decode LOCK response
4863 */
4864 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4865 {
4866 struct xdr_stream xdr;
4867 struct compound_hdr hdr;
4868 int status;
4869
4870 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4871 status = decode_compound_hdr(&xdr, &hdr);
4872 if (status)
4873 goto out;
4874 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4875 if (status)
4876 goto out;
4877 status = decode_putfh(&xdr);
4878 if (status)
4879 goto out;
4880 status = decode_lock(&xdr, res);
4881 out:
4882 return status;
4883 }
4884
4885 /*
4886 * Decode LOCKT response
4887 */
4888 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
4889 {
4890 struct xdr_stream xdr;
4891 struct compound_hdr hdr;
4892 int status;
4893
4894 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4895 status = decode_compound_hdr(&xdr, &hdr);
4896 if (status)
4897 goto out;
4898 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4899 if (status)
4900 goto out;
4901 status = decode_putfh(&xdr);
4902 if (status)
4903 goto out;
4904 status = decode_lockt(&xdr, res);
4905 out:
4906 return status;
4907 }
4908
4909 /*
4910 * Decode LOCKU response
4911 */
4912 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
4913 {
4914 struct xdr_stream xdr;
4915 struct compound_hdr hdr;
4916 int status;
4917
4918 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4919 status = decode_compound_hdr(&xdr, &hdr);
4920 if (status)
4921 goto out;
4922 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4923 if (status)
4924 goto out;
4925 status = decode_putfh(&xdr);
4926 if (status)
4927 goto out;
4928 status = decode_locku(&xdr, res);
4929 out:
4930 return status;
4931 }
4932
4933 /*
4934 * Decode READLINK response
4935 */
4936 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
4937 struct nfs4_readlink_res *res)
4938 {
4939 struct xdr_stream xdr;
4940 struct compound_hdr hdr;
4941 int status;
4942
4943 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4944 status = decode_compound_hdr(&xdr, &hdr);
4945 if (status)
4946 goto out;
4947 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4948 if (status)
4949 goto out;
4950 status = decode_putfh(&xdr);
4951 if (status)
4952 goto out;
4953 status = decode_readlink(&xdr, rqstp);
4954 out:
4955 return status;
4956 }
4957
4958 /*
4959 * Decode READDIR response
4960 */
4961 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
4962 {
4963 struct xdr_stream xdr;
4964 struct compound_hdr hdr;
4965 int status;
4966
4967 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4968 status = decode_compound_hdr(&xdr, &hdr);
4969 if (status)
4970 goto out;
4971 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4972 if (status)
4973 goto out;
4974 status = decode_putfh(&xdr);
4975 if (status)
4976 goto out;
4977 status = decode_readdir(&xdr, rqstp, res);
4978 out:
4979 return status;
4980 }
4981
4982 /*
4983 * Decode Read response
4984 */
4985 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
4986 {
4987 struct xdr_stream xdr;
4988 struct compound_hdr hdr;
4989 int status;
4990
4991 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4992 status = decode_compound_hdr(&xdr, &hdr);
4993 if (status)
4994 goto out;
4995 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4996 if (status)
4997 goto out;
4998 status = decode_putfh(&xdr);
4999 if (status)
5000 goto out;
5001 status = decode_read(&xdr, rqstp, res);
5002 if (!status)
5003 status = res->count;
5004 out:
5005 return status;
5006 }
5007
5008 /*
5009 * Decode WRITE response
5010 */
5011 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5012 {
5013 struct xdr_stream xdr;
5014 struct compound_hdr hdr;
5015 int status;
5016
5017 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5018 status = decode_compound_hdr(&xdr, &hdr);
5019 if (status)
5020 goto out;
5021 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5022 if (status)
5023 goto out;
5024 status = decode_putfh(&xdr);
5025 if (status)
5026 goto out;
5027 status = decode_write(&xdr, res);
5028 if (status)
5029 goto out;
5030 decode_getfattr(&xdr, res->fattr, res->server,
5031 !RPC_IS_ASYNC(rqstp->rq_task));
5032 if (!status)
5033 status = res->count;
5034 out:
5035 return status;
5036 }
5037
5038 /*
5039 * Decode COMMIT response
5040 */
5041 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5042 {
5043 struct xdr_stream xdr;
5044 struct compound_hdr hdr;
5045 int status;
5046
5047 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5048 status = decode_compound_hdr(&xdr, &hdr);
5049 if (status)
5050 goto out;
5051 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5052 if (status)
5053 goto out;
5054 status = decode_putfh(&xdr);
5055 if (status)
5056 goto out;
5057 status = decode_commit(&xdr, res);
5058 if (status)
5059 goto out;
5060 decode_getfattr(&xdr, res->fattr, res->server,
5061 !RPC_IS_ASYNC(rqstp->rq_task));
5062 out:
5063 return status;
5064 }
5065
5066 /*
5067 * FSINFO request
5068 */
5069 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5070 struct nfs4_fsinfo_res *res)
5071 {
5072 struct xdr_stream xdr;
5073 struct compound_hdr hdr;
5074 int status;
5075
5076 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5077 status = decode_compound_hdr(&xdr, &hdr);
5078 if (!status)
5079 status = decode_sequence(&xdr, &res->seq_res, req);
5080 if (!status)
5081 status = decode_putfh(&xdr);
5082 if (!status)
5083 status = decode_fsinfo(&xdr, res->fsinfo);
5084 return status;
5085 }
5086
5087 /*
5088 * PATHCONF request
5089 */
5090 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5091 struct nfs4_pathconf_res *res)
5092 {
5093 struct xdr_stream xdr;
5094 struct compound_hdr hdr;
5095 int status;
5096
5097 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5098 status = decode_compound_hdr(&xdr, &hdr);
5099 if (!status)
5100 status = decode_sequence(&xdr, &res->seq_res, req);
5101 if (!status)
5102 status = decode_putfh(&xdr);
5103 if (!status)
5104 status = decode_pathconf(&xdr, res->pathconf);
5105 return status;
5106 }
5107
5108 /*
5109 * STATFS request
5110 */
5111 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5112 struct nfs4_statfs_res *res)
5113 {
5114 struct xdr_stream xdr;
5115 struct compound_hdr hdr;
5116 int status;
5117
5118 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5119 status = decode_compound_hdr(&xdr, &hdr);
5120 if (!status)
5121 status = decode_sequence(&xdr, &res->seq_res, req);
5122 if (!status)
5123 status = decode_putfh(&xdr);
5124 if (!status)
5125 status = decode_statfs(&xdr, res->fsstat);
5126 return status;
5127 }
5128
5129 /*
5130 * GETATTR_BITMAP request
5131 */
5132 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
5133 {
5134 struct xdr_stream xdr;
5135 struct compound_hdr hdr;
5136 int status;
5137
5138 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5139 status = decode_compound_hdr(&xdr, &hdr);
5140 if (status)
5141 goto out;
5142 status = decode_sequence(&xdr, &res->seq_res, req);
5143 if (status)
5144 goto out;
5145 if ((status = decode_putfh(&xdr)) != 0)
5146 goto out;
5147 status = decode_server_caps(&xdr, res);
5148 out:
5149 return status;
5150 }
5151
5152 /*
5153 * Decode RENEW response
5154 */
5155 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5156 {
5157 struct xdr_stream xdr;
5158 struct compound_hdr hdr;
5159 int status;
5160
5161 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5162 status = decode_compound_hdr(&xdr, &hdr);
5163 if (!status)
5164 status = decode_renew(&xdr);
5165 return status;
5166 }
5167
5168 /*
5169 * a SETCLIENTID request
5170 */
5171 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5172 struct nfs_client *clp)
5173 {
5174 struct xdr_stream xdr;
5175 struct compound_hdr hdr;
5176 int status;
5177
5178 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5179 status = decode_compound_hdr(&xdr, &hdr);
5180 if (!status)
5181 status = decode_setclientid(&xdr, clp);
5182 return status;
5183 }
5184
5185 /*
5186 * a SETCLIENTID_CONFIRM request
5187 */
5188 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
5189 {
5190 struct xdr_stream xdr;
5191 struct compound_hdr hdr;
5192 int status;
5193
5194 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5195 status = decode_compound_hdr(&xdr, &hdr);
5196 if (!status)
5197 status = decode_setclientid_confirm(&xdr);
5198 if (!status)
5199 status = decode_putrootfh(&xdr);
5200 if (!status)
5201 status = decode_fsinfo(&xdr, fsinfo);
5202 return status;
5203 }
5204
5205 /*
5206 * DELEGRETURN request
5207 */
5208 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
5209 {
5210 struct xdr_stream xdr;
5211 struct compound_hdr hdr;
5212 int status;
5213
5214 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5215 status = decode_compound_hdr(&xdr, &hdr);
5216 if (status)
5217 goto out;
5218 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5219 if (status)
5220 goto out;
5221 status = decode_putfh(&xdr);
5222 if (status != 0)
5223 goto out;
5224 status = decode_delegreturn(&xdr);
5225 decode_getfattr(&xdr, res->fattr, res->server,
5226 !RPC_IS_ASYNC(rqstp->rq_task));
5227 out:
5228 return status;
5229 }
5230
5231 /*
5232 * FS_LOCATIONS request
5233 */
5234 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5235 struct nfs4_fs_locations_res *res)
5236 {
5237 struct xdr_stream xdr;
5238 struct compound_hdr hdr;
5239 int status;
5240
5241 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5242 status = decode_compound_hdr(&xdr, &hdr);
5243 if (status)
5244 goto out;
5245 status = decode_sequence(&xdr, &res->seq_res, req);
5246 if (status)
5247 goto out;
5248 if ((status = decode_putfh(&xdr)) != 0)
5249 goto out;
5250 if ((status = decode_lookup(&xdr)) != 0)
5251 goto out;
5252 xdr_enter_page(&xdr, PAGE_SIZE);
5253 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
5254 res->fs_locations->server,
5255 !RPC_IS_ASYNC(req->rq_task));
5256 out:
5257 return status;
5258 }
5259
5260 #if defined(CONFIG_NFS_V4_1)
5261 /*
5262 * EXCHANGE_ID request
5263 */
5264 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5265 void *res)
5266 {
5267 struct xdr_stream xdr;
5268 struct compound_hdr hdr;
5269 int status;
5270
5271 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5272 status = decode_compound_hdr(&xdr, &hdr);
5273 if (!status)
5274 status = decode_exchange_id(&xdr, res);
5275 return status;
5276 }
5277
5278 /*
5279 * a CREATE_SESSION request
5280 */
5281 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5282 struct nfs41_create_session_res *res)
5283 {
5284 struct xdr_stream xdr;
5285 struct compound_hdr hdr;
5286 int status;
5287
5288 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5289 status = decode_compound_hdr(&xdr, &hdr);
5290 if (!status)
5291 status = decode_create_session(&xdr, res);
5292 return status;
5293 }
5294
5295 /*
5296 * a DESTROY_SESSION request
5297 */
5298 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5299 void *dummy)
5300 {
5301 struct xdr_stream xdr;
5302 struct compound_hdr hdr;
5303 int status;
5304
5305 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5306 status = decode_compound_hdr(&xdr, &hdr);
5307 if (!status)
5308 status = decode_destroy_session(&xdr, dummy);
5309 return status;
5310 }
5311
5312 /*
5313 * a SEQUENCE request
5314 */
5315 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5316 struct nfs4_sequence_res *res)
5317 {
5318 struct xdr_stream xdr;
5319 struct compound_hdr hdr;
5320 int status;
5321
5322 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5323 status = decode_compound_hdr(&xdr, &hdr);
5324 if (!status)
5325 status = decode_sequence(&xdr, res, rqstp);
5326 return status;
5327 }
5328
5329 /*
5330 * a GET_LEASE_TIME request
5331 */
5332 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5333 struct nfs4_get_lease_time_res *res)
5334 {
5335 struct xdr_stream xdr;
5336 struct compound_hdr hdr;
5337 int status;
5338
5339 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5340 status = decode_compound_hdr(&xdr, &hdr);
5341 if (!status)
5342 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
5343 if (!status)
5344 status = decode_putrootfh(&xdr);
5345 if (!status)
5346 status = decode_fsinfo(&xdr, res->lr_fsinfo);
5347 return status;
5348 }
5349 #endif /* CONFIG_NFS_V4_1 */
5350
5351 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
5352 {
5353 uint32_t bitmap[2] = {0};
5354 uint32_t len;
5355
5356 if (!*p++) {
5357 if (!*p)
5358 return ERR_PTR(-EAGAIN);
5359 entry->eof = 1;
5360 return ERR_PTR(-EBADCOOKIE);
5361 }
5362
5363 entry->prev_cookie = entry->cookie;
5364 p = xdr_decode_hyper(p, &entry->cookie);
5365 entry->len = ntohl(*p++);
5366 entry->name = (const char *) p;
5367 p += XDR_QUADLEN(entry->len);
5368
5369 /*
5370 * In case the server doesn't return an inode number,
5371 * we fake one here. (We don't use inode number 0,
5372 * since glibc seems to choke on it...)
5373 */
5374 entry->ino = 1;
5375
5376 len = ntohl(*p++); /* bitmap length */
5377 if (len-- > 0) {
5378 bitmap[0] = ntohl(*p++);
5379 if (len-- > 0) {
5380 bitmap[1] = ntohl(*p++);
5381 p += len;
5382 }
5383 }
5384 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
5385 if (len > 0) {
5386 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
5387 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
5388 /* Ignore the return value of rdattr_error for now */
5389 p++;
5390 len--;
5391 }
5392 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
5393 xdr_decode_hyper(p, &entry->ino);
5394 else if (bitmap[0] == FATTR4_WORD0_FILEID)
5395 xdr_decode_hyper(p, &entry->ino);
5396 p += len;
5397 }
5398
5399 entry->eof = !p[0] && p[1];
5400 return p;
5401 }
5402
5403 /*
5404 * We need to translate between nfs status return values and
5405 * the local errno values which may not be the same.
5406 */
5407 static struct {
5408 int stat;
5409 int errno;
5410 } nfs_errtbl[] = {
5411 { NFS4_OK, 0 },
5412 { NFS4ERR_PERM, -EPERM },
5413 { NFS4ERR_NOENT, -ENOENT },
5414 { NFS4ERR_IO, -errno_NFSERR_IO},
5415 { NFS4ERR_NXIO, -ENXIO },
5416 { NFS4ERR_ACCESS, -EACCES },
5417 { NFS4ERR_EXIST, -EEXIST },
5418 { NFS4ERR_XDEV, -EXDEV },
5419 { NFS4ERR_NOTDIR, -ENOTDIR },
5420 { NFS4ERR_ISDIR, -EISDIR },
5421 { NFS4ERR_INVAL, -EINVAL },
5422 { NFS4ERR_FBIG, -EFBIG },
5423 { NFS4ERR_NOSPC, -ENOSPC },
5424 { NFS4ERR_ROFS, -EROFS },
5425 { NFS4ERR_MLINK, -EMLINK },
5426 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
5427 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
5428 { NFS4ERR_DQUOT, -EDQUOT },
5429 { NFS4ERR_STALE, -ESTALE },
5430 { NFS4ERR_BADHANDLE, -EBADHANDLE },
5431 { NFS4ERR_BADOWNER, -EINVAL },
5432 { NFS4ERR_BADNAME, -EINVAL },
5433 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
5434 { NFS4ERR_NOTSUPP, -ENOTSUPP },
5435 { NFS4ERR_TOOSMALL, -ETOOSMALL },
5436 { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
5437 { NFS4ERR_BADTYPE, -EBADTYPE },
5438 { NFS4ERR_LOCKED, -EAGAIN },
5439 { NFS4ERR_RESOURCE, -EREMOTEIO },
5440 { NFS4ERR_SYMLINK, -ELOOP },
5441 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
5442 { NFS4ERR_DEADLOCK, -EDEADLK },
5443 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
5444 * to be handled by a
5445 * middle-layer.
5446 */
5447 { -1, -EIO }
5448 };
5449
5450 /*
5451 * Convert an NFS error code to a local one.
5452 * This one is used jointly by NFSv2 and NFSv3.
5453 */
5454 static int
5455 nfs4_stat_to_errno(int stat)
5456 {
5457 int i;
5458 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
5459 if (nfs_errtbl[i].stat == stat)
5460 return nfs_errtbl[i].errno;
5461 }
5462 if (stat <= 10000 || stat > 10100) {
5463 /* The server is looney tunes. */
5464 return -ESERVERFAULT;
5465 }
5466 /* If we cannot translate the error, the recovery routines should
5467 * handle it.
5468 * Note: remaining NFSv4 error codes have values > 10000, so should
5469 * not conflict with native Linux error codes.
5470 */
5471 return -stat;
5472 }
5473
5474 #define PROC(proc, argtype, restype) \
5475 [NFSPROC4_CLNT_##proc] = { \
5476 .p_proc = NFSPROC4_COMPOUND, \
5477 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
5478 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
5479 .p_arglen = NFS4_##argtype##_sz, \
5480 .p_replen = NFS4_##restype##_sz, \
5481 .p_statidx = NFSPROC4_CLNT_##proc, \
5482 .p_name = #proc, \
5483 }
5484
5485 struct rpc_procinfo nfs4_procedures[] = {
5486 PROC(READ, enc_read, dec_read),
5487 PROC(WRITE, enc_write, dec_write),
5488 PROC(COMMIT, enc_commit, dec_commit),
5489 PROC(OPEN, enc_open, dec_open),
5490 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
5491 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
5492 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
5493 PROC(CLOSE, enc_close, dec_close),
5494 PROC(SETATTR, enc_setattr, dec_setattr),
5495 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
5496 PROC(RENEW, enc_renew, dec_renew),
5497 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
5498 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
5499 PROC(LOCK, enc_lock, dec_lock),
5500 PROC(LOCKT, enc_lockt, dec_lockt),
5501 PROC(LOCKU, enc_locku, dec_locku),
5502 PROC(ACCESS, enc_access, dec_access),
5503 PROC(GETATTR, enc_getattr, dec_getattr),
5504 PROC(LOOKUP, enc_lookup, dec_lookup),
5505 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
5506 PROC(REMOVE, enc_remove, dec_remove),
5507 PROC(RENAME, enc_rename, dec_rename),
5508 PROC(LINK, enc_link, dec_link),
5509 PROC(SYMLINK, enc_symlink, dec_symlink),
5510 PROC(CREATE, enc_create, dec_create),
5511 PROC(PATHCONF, enc_pathconf, dec_pathconf),
5512 PROC(STATFS, enc_statfs, dec_statfs),
5513 PROC(READLINK, enc_readlink, dec_readlink),
5514 PROC(READDIR, enc_readdir, dec_readdir),
5515 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
5516 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
5517 PROC(GETACL, enc_getacl, dec_getacl),
5518 PROC(SETACL, enc_setacl, dec_setacl),
5519 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
5520 #if defined(CONFIG_NFS_V4_1)
5521 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
5522 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
5523 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
5524 PROC(SEQUENCE, enc_sequence, dec_sequence),
5525 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5526 #endif /* CONFIG_NFS_V4_1 */
5527 };
5528
5529 struct rpc_version nfs_version4 = {
5530 .number = 4,
5531 .nrprocs = ARRAY_SIZE(nfs4_procedures),
5532 .procs = nfs4_procedures
5533 };
5534
5535 /*
5536 * Local variables:
5537 * c-basic-offset: 8
5538 * End:
5539 */
Linux kernel - Deliverables
This page took 0.164027 seconds and 5 git commands to generate.