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nfs: nfs4xdr: get rid of READ32
[linux-2.6/cjktty.git] / fs / nfs / nfs4xdr.c
blob5f6b46f17c5b8f43f74064164f279d8de5378332
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 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
706 {
707 __be32 *p = xdr_reserve_space(xdr, nbytes);
708 BUG_ON(!p);
709 return p;
710 }
711
712 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
713 {
714 __be32 *p;
715
716 p = xdr_reserve_space(xdr, 4 + len);
717 BUG_ON(p == NULL);
718 xdr_encode_opaque(p, str, len);
719 }
720
721 static void encode_compound_hdr(struct xdr_stream *xdr,
722 struct rpc_rqst *req,
723 struct compound_hdr *hdr)
724 {
725 __be32 *p;
726 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
727
728 /* initialize running count of expected bytes in reply.
729 * NOTE: the replied tag SHOULD be the same is the one sent,
730 * but this is not required as a MUST for the server to do so. */
731 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
732
733 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
734 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
735 p = reserve_space(xdr, 4 + hdr->taglen + 8);
736 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
737 *p++ = cpu_to_be32(hdr->minorversion);
738 hdr->nops_p = p;
739 *p = cpu_to_be32(hdr->nops);
740 }
741
742 static void encode_nops(struct compound_hdr *hdr)
743 {
744 BUG_ON(hdr->nops > NFS4_MAX_OPS);
745 *hdr->nops_p = htonl(hdr->nops);
746 }
747
748 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
749 {
750 __be32 *p;
751
752 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
753 BUG_ON(p == NULL);
754 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
755 }
756
757 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
758 {
759 char owner_name[IDMAP_NAMESZ];
760 char owner_group[IDMAP_NAMESZ];
761 int owner_namelen = 0;
762 int owner_grouplen = 0;
763 __be32 *p;
764 __be32 *q;
765 int len;
766 uint32_t bmval0 = 0;
767 uint32_t bmval1 = 0;
768
769 /*
770 * We reserve enough space to write the entire attribute buffer at once.
771 * In the worst-case, this would be
772 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
773 * = 36 bytes, plus any contribution from variable-length fields
774 * such as owner/group.
775 */
776 len = 16;
777
778 /* Sigh */
779 if (iap->ia_valid & ATTR_SIZE)
780 len += 8;
781 if (iap->ia_valid & ATTR_MODE)
782 len += 4;
783 if (iap->ia_valid & ATTR_UID) {
784 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
785 if (owner_namelen < 0) {
786 dprintk("nfs: couldn't resolve uid %d to string\n",
787 iap->ia_uid);
788 /* XXX */
789 strcpy(owner_name, "nobody");
790 owner_namelen = sizeof("nobody") - 1;
791 /* goto out; */
792 }
793 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
794 }
795 if (iap->ia_valid & ATTR_GID) {
796 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
797 if (owner_grouplen < 0) {
798 dprintk("nfs: couldn't resolve gid %d to string\n",
799 iap->ia_gid);
800 strcpy(owner_group, "nobody");
801 owner_grouplen = sizeof("nobody") - 1;
802 /* goto out; */
803 }
804 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
805 }
806 if (iap->ia_valid & ATTR_ATIME_SET)
807 len += 16;
808 else if (iap->ia_valid & ATTR_ATIME)
809 len += 4;
810 if (iap->ia_valid & ATTR_MTIME_SET)
811 len += 16;
812 else if (iap->ia_valid & ATTR_MTIME)
813 len += 4;
814 p = reserve_space(xdr, len);
815
816 /*
817 * We write the bitmap length now, but leave the bitmap and the attribute
818 * buffer length to be backfilled at the end of this routine.
819 */
820 *p++ = cpu_to_be32(2);
821 q = p;
822 p += 3;
823
824 if (iap->ia_valid & ATTR_SIZE) {
825 bmval0 |= FATTR4_WORD0_SIZE;
826 p = xdr_encode_hyper(p, iap->ia_size);
827 }
828 if (iap->ia_valid & ATTR_MODE) {
829 bmval1 |= FATTR4_WORD1_MODE;
830 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
831 }
832 if (iap->ia_valid & ATTR_UID) {
833 bmval1 |= FATTR4_WORD1_OWNER;
834 p = xdr_encode_opaque(p, owner_name, owner_namelen);
835 }
836 if (iap->ia_valid & ATTR_GID) {
837 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
838 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
839 }
840 if (iap->ia_valid & ATTR_ATIME_SET) {
841 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
842 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
843 *p++ = cpu_to_be32(0);
844 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
845 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
846 }
847 else if (iap->ia_valid & ATTR_ATIME) {
848 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
849 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
850 }
851 if (iap->ia_valid & ATTR_MTIME_SET) {
852 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
853 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
854 *p++ = cpu_to_be32(0);
855 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
856 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
857 }
858 else if (iap->ia_valid & ATTR_MTIME) {
859 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
860 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
861 }
862
863 /*
864 * Now we backfill the bitmap and the attribute buffer length.
865 */
866 if (len != ((char *)p - (char *)q) + 4) {
867 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
868 len, ((char *)p - (char *)q) + 4);
869 BUG();
870 }
871 len = (char *)p - (char *)q - 12;
872 *q++ = htonl(bmval0);
873 *q++ = htonl(bmval1);
874 *q = htonl(len);
875
876 /* out: */
877 }
878
879 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
880 {
881 __be32 *p;
882
883 p = reserve_space(xdr, 8);
884 *p++ = cpu_to_be32(OP_ACCESS);
885 *p = cpu_to_be32(access);
886 hdr->nops++;
887 hdr->replen += decode_access_maxsz;
888 }
889
890 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
891 {
892 __be32 *p;
893
894 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
895 *p++ = cpu_to_be32(OP_CLOSE);
896 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
897 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
898 hdr->nops++;
899 hdr->replen += decode_close_maxsz;
900 }
901
902 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
903 {
904 __be32 *p;
905
906 p = reserve_space(xdr, 16);
907 *p++ = cpu_to_be32(OP_COMMIT);
908 p = xdr_encode_hyper(p, args->offset);
909 *p = cpu_to_be32(args->count);
910 hdr->nops++;
911 hdr->replen += decode_commit_maxsz;
912 }
913
914 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
915 {
916 __be32 *p;
917
918 p = reserve_space(xdr, 8);
919 *p++ = cpu_to_be32(OP_CREATE);
920 *p = cpu_to_be32(create->ftype);
921
922 switch (create->ftype) {
923 case NF4LNK:
924 p = reserve_space(xdr, 4);
925 *p = cpu_to_be32(create->u.symlink.len);
926 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
927 break;
928
929 case NF4BLK: case NF4CHR:
930 p = reserve_space(xdr, 8);
931 *p++ = cpu_to_be32(create->u.device.specdata1);
932 *p = cpu_to_be32(create->u.device.specdata2);
933 break;
934
935 default:
936 break;
937 }
938
939 encode_string(xdr, create->name->len, create->name->name);
940 hdr->nops++;
941 hdr->replen += decode_create_maxsz;
942
943 encode_attrs(xdr, create->attrs, create->server);
944 }
945
946 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
947 {
948 __be32 *p;
949
950 p = reserve_space(xdr, 12);
951 *p++ = cpu_to_be32(OP_GETATTR);
952 *p++ = cpu_to_be32(1);
953 *p = cpu_to_be32(bitmap);
954 hdr->nops++;
955 hdr->replen += decode_getattr_maxsz;
956 }
957
958 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
959 {
960 __be32 *p;
961
962 p = reserve_space(xdr, 16);
963 *p++ = cpu_to_be32(OP_GETATTR);
964 *p++ = cpu_to_be32(2);
965 *p++ = cpu_to_be32(bm0);
966 *p = cpu_to_be32(bm1);
967 hdr->nops++;
968 hdr->replen += decode_getattr_maxsz;
969 }
970
971 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
972 {
973 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
974 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
975 }
976
977 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
978 {
979 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
980 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
981 }
982
983 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
984 {
985 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
986 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
987 }
988
989 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
990 {
991 __be32 *p;
992
993 p = reserve_space(xdr, 4);
994 *p = cpu_to_be32(OP_GETFH);
995 hdr->nops++;
996 hdr->replen += decode_getfh_maxsz;
997 }
998
999 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1000 {
1001 __be32 *p;
1002
1003 p = reserve_space(xdr, 8 + name->len);
1004 *p++ = cpu_to_be32(OP_LINK);
1005 xdr_encode_opaque(p, name->name, name->len);
1006 hdr->nops++;
1007 hdr->replen += decode_link_maxsz;
1008 }
1009
1010 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1011 {
1012 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1013 return block ? NFS4_READW_LT : NFS4_READ_LT;
1014 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1015 }
1016
1017 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1018 {
1019 if (fl->fl_end == OFFSET_MAX)
1020 return ~(uint64_t)0;
1021 return fl->fl_end - fl->fl_start + 1;
1022 }
1023
1024 /*
1025 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1026 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1027 */
1028 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1029 {
1030 __be32 *p;
1031
1032 p = reserve_space(xdr, 32);
1033 *p++ = cpu_to_be32(OP_LOCK);
1034 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1035 *p++ = cpu_to_be32(args->reclaim);
1036 p = xdr_encode_hyper(p, args->fl->fl_start);
1037 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1038 *p = cpu_to_be32(args->new_lock_owner);
1039 if (args->new_lock_owner){
1040 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+32);
1041 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1042 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1043 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1044 p = xdr_encode_hyper(p, args->lock_owner.clientid);
1045 *p++ = cpu_to_be32(16);
1046 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1047 xdr_encode_hyper(p, args->lock_owner.id);
1048 }
1049 else {
1050 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1051 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1052 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1053 }
1054 hdr->nops++;
1055 hdr->replen += decode_lock_maxsz;
1056 }
1057
1058 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1059 {
1060 __be32 *p;
1061
1062 p = reserve_space(xdr, 52);
1063 *p++ = cpu_to_be32(OP_LOCKT);
1064 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1065 p = xdr_encode_hyper(p, args->fl->fl_start);
1066 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1067 p = xdr_encode_hyper(p, args->lock_owner.clientid);
1068 *p++ = cpu_to_be32(16);
1069 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1070 xdr_encode_hyper(p, args->lock_owner.id);
1071 hdr->nops++;
1072 hdr->replen += decode_lockt_maxsz;
1073 }
1074
1075 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1076 {
1077 __be32 *p;
1078
1079 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1080 *p++ = cpu_to_be32(OP_LOCKU);
1081 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1082 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1083 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1084 p = xdr_encode_hyper(p, args->fl->fl_start);
1085 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1086 hdr->nops++;
1087 hdr->replen += decode_locku_maxsz;
1088 }
1089
1090 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1091 {
1092 int len = name->len;
1093 __be32 *p;
1094
1095 p = reserve_space(xdr, 8 + len);
1096 *p++ = cpu_to_be32(OP_LOOKUP);
1097 xdr_encode_opaque(p, name->name, len);
1098 hdr->nops++;
1099 hdr->replen += decode_lookup_maxsz;
1100 }
1101
1102 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1103 {
1104 __be32 *p;
1105
1106 p = reserve_space(xdr, 8);
1107 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1108 case FMODE_READ:
1109 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1110 break;
1111 case FMODE_WRITE:
1112 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1113 break;
1114 case FMODE_READ|FMODE_WRITE:
1115 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1116 break;
1117 default:
1118 *p++ = cpu_to_be32(0);
1119 }
1120 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1121 }
1122
1123 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1124 {
1125 __be32 *p;
1126 /*
1127 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1128 * owner 4 = 32
1129 */
1130 p = reserve_space(xdr, 8);
1131 *p++ = cpu_to_be32(OP_OPEN);
1132 *p = cpu_to_be32(arg->seqid->sequence->counter);
1133 encode_share_access(xdr, arg->fmode);
1134 p = reserve_space(xdr, 28);
1135 p = xdr_encode_hyper(p, arg->clientid);
1136 *p++ = cpu_to_be32(16);
1137 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1138 xdr_encode_hyper(p, arg->id);
1139 }
1140
1141 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1142 {
1143 __be32 *p;
1144
1145 p = reserve_space(xdr, 4);
1146 switch(arg->open_flags & O_EXCL) {
1147 case 0:
1148 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1149 encode_attrs(xdr, arg->u.attrs, arg->server);
1150 break;
1151 default:
1152 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1153 encode_nfs4_verifier(xdr, &arg->u.verifier);
1154 }
1155 }
1156
1157 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1158 {
1159 __be32 *p;
1160
1161 p = reserve_space(xdr, 4);
1162 switch (arg->open_flags & O_CREAT) {
1163 case 0:
1164 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1165 break;
1166 default:
1167 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1168 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1169 encode_createmode(xdr, arg);
1170 }
1171 }
1172
1173 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1174 {
1175 __be32 *p;
1176
1177 p = reserve_space(xdr, 4);
1178 switch (delegation_type) {
1179 case 0:
1180 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1181 break;
1182 case FMODE_READ:
1183 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1184 break;
1185 case FMODE_WRITE|FMODE_READ:
1186 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1187 break;
1188 default:
1189 BUG();
1190 }
1191 }
1192
1193 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1194 {
1195 __be32 *p;
1196
1197 p = reserve_space(xdr, 4);
1198 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1199 encode_string(xdr, name->len, name->name);
1200 }
1201
1202 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1203 {
1204 __be32 *p;
1205
1206 p = reserve_space(xdr, 4);
1207 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1208 encode_delegation_type(xdr, type);
1209 }
1210
1211 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1212 {
1213 __be32 *p;
1214
1215 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1216 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1217 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1218 encode_string(xdr, name->len, name->name);
1219 }
1220
1221 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1222 {
1223 encode_openhdr(xdr, arg);
1224 encode_opentype(xdr, arg);
1225 switch (arg->claim) {
1226 case NFS4_OPEN_CLAIM_NULL:
1227 encode_claim_null(xdr, arg->name);
1228 break;
1229 case NFS4_OPEN_CLAIM_PREVIOUS:
1230 encode_claim_previous(xdr, arg->u.delegation_type);
1231 break;
1232 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1233 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1234 break;
1235 default:
1236 BUG();
1237 }
1238 hdr->nops++;
1239 hdr->replen += decode_open_maxsz;
1240 }
1241
1242 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1243 {
1244 __be32 *p;
1245
1246 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1247 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1248 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1249 *p = cpu_to_be32(arg->seqid->sequence->counter);
1250 hdr->nops++;
1251 hdr->replen += decode_open_confirm_maxsz;
1252 }
1253
1254 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1255 {
1256 __be32 *p;
1257
1258 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1259 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1260 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1261 *p = cpu_to_be32(arg->seqid->sequence->counter);
1262 encode_share_access(xdr, arg->fmode);
1263 hdr->nops++;
1264 hdr->replen += decode_open_downgrade_maxsz;
1265 }
1266
1267 static void
1268 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1269 {
1270 int len = fh->size;
1271 __be32 *p;
1272
1273 p = reserve_space(xdr, 8 + len);
1274 *p++ = cpu_to_be32(OP_PUTFH);
1275 xdr_encode_opaque(p, fh->data, len);
1276 hdr->nops++;
1277 hdr->replen += decode_putfh_maxsz;
1278 }
1279
1280 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1281 {
1282 __be32 *p;
1283
1284 p = reserve_space(xdr, 4);
1285 *p = cpu_to_be32(OP_PUTROOTFH);
1286 hdr->nops++;
1287 hdr->replen += decode_putrootfh_maxsz;
1288 }
1289
1290 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1291 {
1292 nfs4_stateid stateid;
1293 __be32 *p;
1294
1295 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1296 if (ctx->state != NULL) {
1297 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1298 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1299 } else
1300 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1301 }
1302
1303 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1304 {
1305 __be32 *p;
1306
1307 p = reserve_space(xdr, 4);
1308 *p = cpu_to_be32(OP_READ);
1309
1310 encode_stateid(xdr, args->context);
1311
1312 p = reserve_space(xdr, 12);
1313 p = xdr_encode_hyper(p, args->offset);
1314 *p = cpu_to_be32(args->count);
1315 hdr->nops++;
1316 hdr->replen += decode_read_maxsz;
1317 }
1318
1319 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1320 {
1321 uint32_t attrs[2] = {
1322 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1323 FATTR4_WORD1_MOUNTED_ON_FILEID,
1324 };
1325 __be32 *p;
1326
1327 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1328 *p++ = cpu_to_be32(OP_READDIR);
1329 p = xdr_encode_hyper(p, readdir->cookie);
1330 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1331 *p++ = cpu_to_be32(readdir->count >> 1); /* We're not doing readdirplus */
1332 *p++ = cpu_to_be32(readdir->count);
1333 *p++ = cpu_to_be32(2);
1334 /* Switch to mounted_on_fileid if the server supports it */
1335 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1336 attrs[0] &= ~FATTR4_WORD0_FILEID;
1337 else
1338 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1339 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1340 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1341 hdr->nops++;
1342 hdr->replen += decode_readdir_maxsz;
1343 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1344 __func__,
1345 (unsigned long long)readdir->cookie,
1346 ((u32 *)readdir->verifier.data)[0],
1347 ((u32 *)readdir->verifier.data)[1],
1348 attrs[0] & readdir->bitmask[0],
1349 attrs[1] & readdir->bitmask[1]);
1350 }
1351
1352 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1353 {
1354 __be32 *p;
1355
1356 p = reserve_space(xdr, 4);
1357 *p = cpu_to_be32(OP_READLINK);
1358 hdr->nops++;
1359 hdr->replen += decode_readlink_maxsz;
1360 }
1361
1362 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1363 {
1364 __be32 *p;
1365
1366 p = reserve_space(xdr, 8 + name->len);
1367 *p++ = cpu_to_be32(OP_REMOVE);
1368 xdr_encode_opaque(p, name->name, name->len);
1369 hdr->nops++;
1370 hdr->replen += decode_remove_maxsz;
1371 }
1372
1373 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1374 {
1375 __be32 *p;
1376
1377 p = reserve_space(xdr, 4);
1378 *p = cpu_to_be32(OP_RENAME);
1379 encode_string(xdr, oldname->len, oldname->name);
1380 encode_string(xdr, newname->len, newname->name);
1381 hdr->nops++;
1382 hdr->replen += decode_rename_maxsz;
1383 }
1384
1385 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1386 {
1387 __be32 *p;
1388
1389 p = reserve_space(xdr, 12);
1390 *p++ = cpu_to_be32(OP_RENEW);
1391 xdr_encode_hyper(p, client_stateid->cl_clientid);
1392 hdr->nops++;
1393 hdr->replen += decode_renew_maxsz;
1394 }
1395
1396 static void
1397 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1398 {
1399 __be32 *p;
1400
1401 p = reserve_space(xdr, 4);
1402 *p = cpu_to_be32(OP_RESTOREFH);
1403 hdr->nops++;
1404 hdr->replen += decode_restorefh_maxsz;
1405 }
1406
1407 static int
1408 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1409 {
1410 __be32 *p;
1411
1412 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1413 *p++ = cpu_to_be32(OP_SETATTR);
1414 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1415 p = reserve_space(xdr, 2*4);
1416 *p++ = cpu_to_be32(1);
1417 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1418 if (arg->acl_len % 4)
1419 return -EINVAL;
1420 p = reserve_space(xdr, 4);
1421 *p = cpu_to_be32(arg->acl_len);
1422 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1423 hdr->nops++;
1424 hdr->replen += decode_setacl_maxsz;
1425 return 0;
1426 }
1427
1428 static void
1429 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1430 {
1431 __be32 *p;
1432
1433 p = reserve_space(xdr, 4);
1434 *p = cpu_to_be32(OP_SAVEFH);
1435 hdr->nops++;
1436 hdr->replen += decode_savefh_maxsz;
1437 }
1438
1439 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1440 {
1441 __be32 *p;
1442
1443 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1444 *p++ = cpu_to_be32(OP_SETATTR);
1445 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1446 hdr->nops++;
1447 hdr->replen += decode_setattr_maxsz;
1448 encode_attrs(xdr, arg->iap, server);
1449 }
1450
1451 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1452 {
1453 __be32 *p;
1454
1455 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1456 *p++ = cpu_to_be32(OP_SETCLIENTID);
1457 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1458
1459 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1460 p = reserve_space(xdr, 4);
1461 *p = cpu_to_be32(setclientid->sc_prog);
1462 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1463 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1464 p = reserve_space(xdr, 4);
1465 *p = cpu_to_be32(setclientid->sc_cb_ident);
1466 hdr->nops++;
1467 hdr->replen += decode_setclientid_maxsz;
1468 }
1469
1470 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
1471 {
1472 __be32 *p;
1473
1474 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1475 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1476 p = xdr_encode_hyper(p, client_state->cl_clientid);
1477 xdr_encode_opaque_fixed(p, client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1478 hdr->nops++;
1479 hdr->replen += decode_setclientid_confirm_maxsz;
1480 }
1481
1482 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1483 {
1484 __be32 *p;
1485
1486 p = reserve_space(xdr, 4);
1487 *p = cpu_to_be32(OP_WRITE);
1488
1489 encode_stateid(xdr, args->context);
1490
1491 p = reserve_space(xdr, 16);
1492 p = xdr_encode_hyper(p, args->offset);
1493 *p++ = cpu_to_be32(args->stable);
1494 *p = cpu_to_be32(args->count);
1495
1496 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1497 hdr->nops++;
1498 hdr->replen += decode_write_maxsz;
1499 }
1500
1501 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1502 {
1503 __be32 *p;
1504
1505 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1506
1507 *p++ = cpu_to_be32(OP_DELEGRETURN);
1508 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1509 hdr->nops++;
1510 hdr->replen += decode_delegreturn_maxsz;
1511 }
1512
1513 #if defined(CONFIG_NFS_V4_1)
1514 /* NFSv4.1 operations */
1515 static void encode_exchange_id(struct xdr_stream *xdr,
1516 struct nfs41_exchange_id_args *args,
1517 struct compound_hdr *hdr)
1518 {
1519 __be32 *p;
1520
1521 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1522 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1523 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1524
1525 encode_string(xdr, args->id_len, args->id);
1526
1527 p = reserve_space(xdr, 12);
1528 *p++ = cpu_to_be32(args->flags);
1529 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1530 *p = cpu_to_be32(0); /* zero length implementation id array */
1531 hdr->nops++;
1532 hdr->replen += decode_exchange_id_maxsz;
1533 }
1534
1535 static void encode_create_session(struct xdr_stream *xdr,
1536 struct nfs41_create_session_args *args,
1537 struct compound_hdr *hdr)
1538 {
1539 __be32 *p;
1540 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1541 uint32_t len;
1542 struct nfs_client *clp = args->client;
1543
1544 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1545 clp->cl_ipaddr);
1546
1547 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1548 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1549 p = xdr_encode_hyper(p, clp->cl_ex_clid);
1550 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1551 *p++ = cpu_to_be32(args->flags); /*flags */
1552
1553 /* Fore Channel */
1554 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1555 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1556 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1557 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1558 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1559 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1560 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1561
1562 /* Back Channel */
1563 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1564 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1565 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1566 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1567 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1568 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1569 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1570
1571 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1572 *p++ = cpu_to_be32(1);
1573 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1574
1575 /* authsys_parms rfc1831 */
1576 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1577 p = xdr_encode_opaque(p, machine_name, len);
1578 *p++ = cpu_to_be32(0); /* UID */
1579 *p++ = cpu_to_be32(0); /* GID */
1580 *p = cpu_to_be32(0); /* No more gids */
1581 hdr->nops++;
1582 hdr->replen += decode_create_session_maxsz;
1583 }
1584
1585 static void encode_destroy_session(struct xdr_stream *xdr,
1586 struct nfs4_session *session,
1587 struct compound_hdr *hdr)
1588 {
1589 __be32 *p;
1590 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1591 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1592 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1593 hdr->nops++;
1594 hdr->replen += decode_destroy_session_maxsz;
1595 }
1596 #endif /* CONFIG_NFS_V4_1 */
1597
1598 static void encode_sequence(struct xdr_stream *xdr,
1599 const struct nfs4_sequence_args *args,
1600 struct compound_hdr *hdr)
1601 {
1602 #if defined(CONFIG_NFS_V4_1)
1603 struct nfs4_session *session = args->sa_session;
1604 struct nfs4_slot_table *tp;
1605 struct nfs4_slot *slot;
1606 __be32 *p;
1607
1608 if (!session)
1609 return;
1610
1611 tp = &session->fc_slot_table;
1612
1613 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1614 slot = tp->slots + args->sa_slotid;
1615
1616 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1617 *p++ = cpu_to_be32(OP_SEQUENCE);
1618
1619 /*
1620 * Sessionid + seqid + slotid + max slotid + cache_this
1621 */
1622 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1623 "max_slotid=%d cache_this=%d\n",
1624 __func__,
1625 ((u32 *)session->sess_id.data)[0],
1626 ((u32 *)session->sess_id.data)[1],
1627 ((u32 *)session->sess_id.data)[2],
1628 ((u32 *)session->sess_id.data)[3],
1629 slot->seq_nr, args->sa_slotid,
1630 tp->highest_used_slotid, args->sa_cache_this);
1631 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1632 *p++ = cpu_to_be32(slot->seq_nr);
1633 *p++ = cpu_to_be32(args->sa_slotid);
1634 *p++ = cpu_to_be32(tp->highest_used_slotid);
1635 *p = cpu_to_be32(args->sa_cache_this);
1636 hdr->nops++;
1637 hdr->replen += decode_sequence_maxsz;
1638 #endif /* CONFIG_NFS_V4_1 */
1639 }
1640
1641 /*
1642 * END OF "GENERIC" ENCODE ROUTINES.
1643 */
1644
1645 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1646 {
1647 #if defined(CONFIG_NFS_V4_1)
1648 if (args->sa_session)
1649 return args->sa_session->clp->cl_minorversion;
1650 #endif /* CONFIG_NFS_V4_1 */
1651 return 0;
1652 }
1653
1654 /*
1655 * Encode an ACCESS request
1656 */
1657 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1658 {
1659 struct xdr_stream xdr;
1660 struct compound_hdr hdr = {
1661 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1662 };
1663
1664 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1665 encode_compound_hdr(&xdr, req, &hdr);
1666 encode_sequence(&xdr, &args->seq_args, &hdr);
1667 encode_putfh(&xdr, args->fh, &hdr);
1668 encode_access(&xdr, args->access, &hdr);
1669 encode_getfattr(&xdr, args->bitmask, &hdr);
1670 encode_nops(&hdr);
1671 return 0;
1672 }
1673
1674 /*
1675 * Encode LOOKUP request
1676 */
1677 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1678 {
1679 struct xdr_stream xdr;
1680 struct compound_hdr hdr = {
1681 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1682 };
1683
1684 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1685 encode_compound_hdr(&xdr, req, &hdr);
1686 encode_sequence(&xdr, &args->seq_args, &hdr);
1687 encode_putfh(&xdr, args->dir_fh, &hdr);
1688 encode_lookup(&xdr, args->name, &hdr);
1689 encode_getfh(&xdr, &hdr);
1690 encode_getfattr(&xdr, args->bitmask, &hdr);
1691 encode_nops(&hdr);
1692 return 0;
1693 }
1694
1695 /*
1696 * Encode LOOKUP_ROOT request
1697 */
1698 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1699 {
1700 struct xdr_stream xdr;
1701 struct compound_hdr hdr = {
1702 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1703 };
1704
1705 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1706 encode_compound_hdr(&xdr, req, &hdr);
1707 encode_sequence(&xdr, &args->seq_args, &hdr);
1708 encode_putrootfh(&xdr, &hdr);
1709 encode_getfh(&xdr, &hdr);
1710 encode_getfattr(&xdr, args->bitmask, &hdr);
1711 encode_nops(&hdr);
1712 return 0;
1713 }
1714
1715 /*
1716 * Encode REMOVE request
1717 */
1718 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1719 {
1720 struct xdr_stream xdr;
1721 struct compound_hdr hdr = {
1722 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1723 };
1724
1725 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1726 encode_compound_hdr(&xdr, req, &hdr);
1727 encode_sequence(&xdr, &args->seq_args, &hdr);
1728 encode_putfh(&xdr, args->fh, &hdr);
1729 encode_remove(&xdr, &args->name, &hdr);
1730 encode_getfattr(&xdr, args->bitmask, &hdr);
1731 encode_nops(&hdr);
1732 return 0;
1733 }
1734
1735 /*
1736 * Encode RENAME request
1737 */
1738 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1739 {
1740 struct xdr_stream xdr;
1741 struct compound_hdr hdr = {
1742 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1743 };
1744
1745 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1746 encode_compound_hdr(&xdr, req, &hdr);
1747 encode_sequence(&xdr, &args->seq_args, &hdr);
1748 encode_putfh(&xdr, args->old_dir, &hdr);
1749 encode_savefh(&xdr, &hdr);
1750 encode_putfh(&xdr, args->new_dir, &hdr);
1751 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1752 encode_getfattr(&xdr, args->bitmask, &hdr);
1753 encode_restorefh(&xdr, &hdr);
1754 encode_getfattr(&xdr, args->bitmask, &hdr);
1755 encode_nops(&hdr);
1756 return 0;
1757 }
1758
1759 /*
1760 * Encode LINK request
1761 */
1762 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1763 {
1764 struct xdr_stream xdr;
1765 struct compound_hdr hdr = {
1766 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1767 };
1768
1769 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1770 encode_compound_hdr(&xdr, req, &hdr);
1771 encode_sequence(&xdr, &args->seq_args, &hdr);
1772 encode_putfh(&xdr, args->fh, &hdr);
1773 encode_savefh(&xdr, &hdr);
1774 encode_putfh(&xdr, args->dir_fh, &hdr);
1775 encode_link(&xdr, args->name, &hdr);
1776 encode_getfattr(&xdr, args->bitmask, &hdr);
1777 encode_restorefh(&xdr, &hdr);
1778 encode_getfattr(&xdr, args->bitmask, &hdr);
1779 encode_nops(&hdr);
1780 return 0;
1781 }
1782
1783 /*
1784 * Encode CREATE request
1785 */
1786 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1787 {
1788 struct xdr_stream xdr;
1789 struct compound_hdr hdr = {
1790 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1791 };
1792
1793 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1794 encode_compound_hdr(&xdr, req, &hdr);
1795 encode_sequence(&xdr, &args->seq_args, &hdr);
1796 encode_putfh(&xdr, args->dir_fh, &hdr);
1797 encode_savefh(&xdr, &hdr);
1798 encode_create(&xdr, args, &hdr);
1799 encode_getfh(&xdr, &hdr);
1800 encode_getfattr(&xdr, args->bitmask, &hdr);
1801 encode_restorefh(&xdr, &hdr);
1802 encode_getfattr(&xdr, args->bitmask, &hdr);
1803 encode_nops(&hdr);
1804 return 0;
1805 }
1806
1807 /*
1808 * Encode SYMLINK request
1809 */
1810 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1811 {
1812 return nfs4_xdr_enc_create(req, p, args);
1813 }
1814
1815 /*
1816 * Encode GETATTR request
1817 */
1818 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1819 {
1820 struct xdr_stream xdr;
1821 struct compound_hdr hdr = {
1822 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1823 };
1824
1825 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1826 encode_compound_hdr(&xdr, req, &hdr);
1827 encode_sequence(&xdr, &args->seq_args, &hdr);
1828 encode_putfh(&xdr, args->fh, &hdr);
1829 encode_getfattr(&xdr, args->bitmask, &hdr);
1830 encode_nops(&hdr);
1831 return 0;
1832 }
1833
1834 /*
1835 * Encode a CLOSE request
1836 */
1837 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1838 {
1839 struct xdr_stream xdr;
1840 struct compound_hdr hdr = {
1841 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1842 };
1843
1844 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1845 encode_compound_hdr(&xdr, req, &hdr);
1846 encode_sequence(&xdr, &args->seq_args, &hdr);
1847 encode_putfh(&xdr, args->fh, &hdr);
1848 encode_close(&xdr, args, &hdr);
1849 encode_getfattr(&xdr, args->bitmask, &hdr);
1850 encode_nops(&hdr);
1851 return 0;
1852 }
1853
1854 /*
1855 * Encode an OPEN request
1856 */
1857 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1858 {
1859 struct xdr_stream xdr;
1860 struct compound_hdr hdr = {
1861 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1862 };
1863
1864 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1865 encode_compound_hdr(&xdr, req, &hdr);
1866 encode_sequence(&xdr, &args->seq_args, &hdr);
1867 encode_putfh(&xdr, args->fh, &hdr);
1868 encode_savefh(&xdr, &hdr);
1869 encode_open(&xdr, args, &hdr);
1870 encode_getfh(&xdr, &hdr);
1871 encode_getfattr(&xdr, args->bitmask, &hdr);
1872 encode_restorefh(&xdr, &hdr);
1873 encode_getfattr(&xdr, args->bitmask, &hdr);
1874 encode_nops(&hdr);
1875 return 0;
1876 }
1877
1878 /*
1879 * Encode an OPEN_CONFIRM request
1880 */
1881 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1882 {
1883 struct xdr_stream xdr;
1884 struct compound_hdr hdr = {
1885 .nops = 0,
1886 };
1887
1888 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1889 encode_compound_hdr(&xdr, req, &hdr);
1890 encode_putfh(&xdr, args->fh, &hdr);
1891 encode_open_confirm(&xdr, args, &hdr);
1892 encode_nops(&hdr);
1893 return 0;
1894 }
1895
1896 /*
1897 * Encode an OPEN request with no attributes.
1898 */
1899 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1900 {
1901 struct xdr_stream xdr;
1902 struct compound_hdr hdr = {
1903 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1904 };
1905
1906 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1907 encode_compound_hdr(&xdr, req, &hdr);
1908 encode_sequence(&xdr, &args->seq_args, &hdr);
1909 encode_putfh(&xdr, args->fh, &hdr);
1910 encode_open(&xdr, args, &hdr);
1911 encode_getfattr(&xdr, args->bitmask, &hdr);
1912 encode_nops(&hdr);
1913 return 0;
1914 }
1915
1916 /*
1917 * Encode an OPEN_DOWNGRADE request
1918 */
1919 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1920 {
1921 struct xdr_stream xdr;
1922 struct compound_hdr hdr = {
1923 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1924 };
1925
1926 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1927 encode_compound_hdr(&xdr, req, &hdr);
1928 encode_sequence(&xdr, &args->seq_args, &hdr);
1929 encode_putfh(&xdr, args->fh, &hdr);
1930 encode_open_downgrade(&xdr, args, &hdr);
1931 encode_getfattr(&xdr, args->bitmask, &hdr);
1932 encode_nops(&hdr);
1933 return 0;
1934 }
1935
1936 /*
1937 * Encode a LOCK request
1938 */
1939 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1940 {
1941 struct xdr_stream xdr;
1942 struct compound_hdr hdr = {
1943 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1944 };
1945
1946 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1947 encode_compound_hdr(&xdr, req, &hdr);
1948 encode_sequence(&xdr, &args->seq_args, &hdr);
1949 encode_putfh(&xdr, args->fh, &hdr);
1950 encode_lock(&xdr, args, &hdr);
1951 encode_nops(&hdr);
1952 return 0;
1953 }
1954
1955 /*
1956 * Encode a LOCKT request
1957 */
1958 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1959 {
1960 struct xdr_stream xdr;
1961 struct compound_hdr hdr = {
1962 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1963 };
1964
1965 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1966 encode_compound_hdr(&xdr, req, &hdr);
1967 encode_sequence(&xdr, &args->seq_args, &hdr);
1968 encode_putfh(&xdr, args->fh, &hdr);
1969 encode_lockt(&xdr, args, &hdr);
1970 encode_nops(&hdr);
1971 return 0;
1972 }
1973
1974 /*
1975 * Encode a LOCKU request
1976 */
1977 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1978 {
1979 struct xdr_stream xdr;
1980 struct compound_hdr hdr = {
1981 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1982 };
1983
1984 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1985 encode_compound_hdr(&xdr, req, &hdr);
1986 encode_sequence(&xdr, &args->seq_args, &hdr);
1987 encode_putfh(&xdr, args->fh, &hdr);
1988 encode_locku(&xdr, args, &hdr);
1989 encode_nops(&hdr);
1990 return 0;
1991 }
1992
1993 /*
1994 * Encode a READLINK request
1995 */
1996 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
1997 {
1998 struct xdr_stream xdr;
1999 struct compound_hdr hdr = {
2000 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2001 };
2002
2003 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2004 encode_compound_hdr(&xdr, req, &hdr);
2005 encode_sequence(&xdr, &args->seq_args, &hdr);
2006 encode_putfh(&xdr, args->fh, &hdr);
2007 encode_readlink(&xdr, args, req, &hdr);
2008
2009 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2010 args->pgbase, args->pglen);
2011 encode_nops(&hdr);
2012 return 0;
2013 }
2014
2015 /*
2016 * Encode a READDIR request
2017 */
2018 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
2019 {
2020 struct xdr_stream xdr;
2021 struct compound_hdr hdr = {
2022 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2023 };
2024
2025 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2026 encode_compound_hdr(&xdr, req, &hdr);
2027 encode_sequence(&xdr, &args->seq_args, &hdr);
2028 encode_putfh(&xdr, args->fh, &hdr);
2029 encode_readdir(&xdr, args, req, &hdr);
2030
2031 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2032 args->pgbase, args->count);
2033 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2034 __func__, hdr.replen << 2, args->pages,
2035 args->pgbase, args->count);
2036 encode_nops(&hdr);
2037 return 0;
2038 }
2039
2040 /*
2041 * Encode a READ request
2042 */
2043 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
2044 {
2045 struct xdr_stream xdr;
2046 struct compound_hdr hdr = {
2047 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2048 };
2049
2050 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2051 encode_compound_hdr(&xdr, req, &hdr);
2052 encode_sequence(&xdr, &args->seq_args, &hdr);
2053 encode_putfh(&xdr, args->fh, &hdr);
2054 encode_read(&xdr, args, &hdr);
2055
2056 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2057 args->pages, args->pgbase, args->count);
2058 req->rq_rcv_buf.flags |= XDRBUF_READ;
2059 encode_nops(&hdr);
2060 return 0;
2061 }
2062
2063 /*
2064 * Encode an SETATTR request
2065 */
2066 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
2067 {
2068 struct xdr_stream xdr;
2069 struct compound_hdr hdr = {
2070 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2071 };
2072
2073 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2074 encode_compound_hdr(&xdr, req, &hdr);
2075 encode_sequence(&xdr, &args->seq_args, &hdr);
2076 encode_putfh(&xdr, args->fh, &hdr);
2077 encode_setattr(&xdr, args, args->server, &hdr);
2078 encode_getfattr(&xdr, args->bitmask, &hdr);
2079 encode_nops(&hdr);
2080 return 0;
2081 }
2082
2083 /*
2084 * Encode a GETACL request
2085 */
2086 static int
2087 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
2088 struct nfs_getaclargs *args)
2089 {
2090 struct xdr_stream xdr;
2091 struct compound_hdr hdr = {
2092 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2093 };
2094 uint32_t replen;
2095
2096 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2097 encode_compound_hdr(&xdr, req, &hdr);
2098 encode_sequence(&xdr, &args->seq_args, &hdr);
2099 encode_putfh(&xdr, args->fh, &hdr);
2100 replen = hdr.replen + nfs4_fattr_bitmap_maxsz + 1;
2101 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2102
2103 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2104 args->acl_pages, args->acl_pgbase, args->acl_len);
2105 encode_nops(&hdr);
2106 return 0;
2107 }
2108
2109 /*
2110 * Encode a WRITE request
2111 */
2112 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2113 {
2114 struct xdr_stream xdr;
2115 struct compound_hdr hdr = {
2116 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2117 };
2118
2119 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2120 encode_compound_hdr(&xdr, req, &hdr);
2121 encode_sequence(&xdr, &args->seq_args, &hdr);
2122 encode_putfh(&xdr, args->fh, &hdr);
2123 encode_write(&xdr, args, &hdr);
2124 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2125 encode_getfattr(&xdr, args->bitmask, &hdr);
2126 encode_nops(&hdr);
2127 return 0;
2128 }
2129
2130 /*
2131 * a COMMIT request
2132 */
2133 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2134 {
2135 struct xdr_stream xdr;
2136 struct compound_hdr hdr = {
2137 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2138 };
2139
2140 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2141 encode_compound_hdr(&xdr, req, &hdr);
2142 encode_sequence(&xdr, &args->seq_args, &hdr);
2143 encode_putfh(&xdr, args->fh, &hdr);
2144 encode_commit(&xdr, args, &hdr);
2145 encode_getfattr(&xdr, args->bitmask, &hdr);
2146 encode_nops(&hdr);
2147 return 0;
2148 }
2149
2150 /*
2151 * FSINFO request
2152 */
2153 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2154 {
2155 struct xdr_stream xdr;
2156 struct compound_hdr hdr = {
2157 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2158 };
2159
2160 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2161 encode_compound_hdr(&xdr, req, &hdr);
2162 encode_sequence(&xdr, &args->seq_args, &hdr);
2163 encode_putfh(&xdr, args->fh, &hdr);
2164 encode_fsinfo(&xdr, args->bitmask, &hdr);
2165 encode_nops(&hdr);
2166 return 0;
2167 }
2168
2169 /*
2170 * a PATHCONF request
2171 */
2172 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2173 {
2174 struct xdr_stream xdr;
2175 struct compound_hdr hdr = {
2176 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2177 };
2178
2179 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2180 encode_compound_hdr(&xdr, req, &hdr);
2181 encode_sequence(&xdr, &args->seq_args, &hdr);
2182 encode_putfh(&xdr, args->fh, &hdr);
2183 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2184 &hdr);
2185 encode_nops(&hdr);
2186 return 0;
2187 }
2188
2189 /*
2190 * a STATFS request
2191 */
2192 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2193 {
2194 struct xdr_stream xdr;
2195 struct compound_hdr hdr = {
2196 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2197 };
2198
2199 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2200 encode_compound_hdr(&xdr, req, &hdr);
2201 encode_sequence(&xdr, &args->seq_args, &hdr);
2202 encode_putfh(&xdr, args->fh, &hdr);
2203 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2204 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2205 encode_nops(&hdr);
2206 return 0;
2207 }
2208
2209 /*
2210 * GETATTR_BITMAP request
2211 */
2212 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2213 struct nfs4_server_caps_arg *args)
2214 {
2215 struct xdr_stream xdr;
2216 struct compound_hdr hdr = {
2217 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2218 };
2219
2220 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2221 encode_compound_hdr(&xdr, req, &hdr);
2222 encode_sequence(&xdr, &args->seq_args, &hdr);
2223 encode_putfh(&xdr, args->fhandle, &hdr);
2224 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2225 FATTR4_WORD0_LINK_SUPPORT|
2226 FATTR4_WORD0_SYMLINK_SUPPORT|
2227 FATTR4_WORD0_ACLSUPPORT, &hdr);
2228 encode_nops(&hdr);
2229 return 0;
2230 }
2231
2232 /*
2233 * a RENEW request
2234 */
2235 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2236 {
2237 struct xdr_stream xdr;
2238 struct compound_hdr hdr = {
2239 .nops = 0,
2240 };
2241
2242 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2243 encode_compound_hdr(&xdr, req, &hdr);
2244 encode_renew(&xdr, clp, &hdr);
2245 encode_nops(&hdr);
2246 return 0;
2247 }
2248
2249 /*
2250 * a SETCLIENTID request
2251 */
2252 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2253 {
2254 struct xdr_stream xdr;
2255 struct compound_hdr hdr = {
2256 .nops = 0,
2257 };
2258
2259 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2260 encode_compound_hdr(&xdr, req, &hdr);
2261 encode_setclientid(&xdr, sc, &hdr);
2262 encode_nops(&hdr);
2263 return 0;
2264 }
2265
2266 /*
2267 * a SETCLIENTID_CONFIRM request
2268 */
2269 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2270 {
2271 struct xdr_stream xdr;
2272 struct compound_hdr hdr = {
2273 .nops = 0,
2274 };
2275 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2276
2277 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2278 encode_compound_hdr(&xdr, req, &hdr);
2279 encode_setclientid_confirm(&xdr, clp, &hdr);
2280 encode_putrootfh(&xdr, &hdr);
2281 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2282 encode_nops(&hdr);
2283 return 0;
2284 }
2285
2286 /*
2287 * DELEGRETURN request
2288 */
2289 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2290 {
2291 struct xdr_stream xdr;
2292 struct compound_hdr hdr = {
2293 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2294 };
2295
2296 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2297 encode_compound_hdr(&xdr, req, &hdr);
2298 encode_sequence(&xdr, &args->seq_args, &hdr);
2299 encode_putfh(&xdr, args->fhandle, &hdr);
2300 encode_delegreturn(&xdr, args->stateid, &hdr);
2301 encode_getfattr(&xdr, args->bitmask, &hdr);
2302 encode_nops(&hdr);
2303 return 0;
2304 }
2305
2306 /*
2307 * Encode FS_LOCATIONS request
2308 */
2309 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2310 {
2311 struct xdr_stream xdr;
2312 struct compound_hdr hdr = {
2313 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2314 };
2315 uint32_t replen;
2316
2317 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2318 encode_compound_hdr(&xdr, req, &hdr);
2319 encode_sequence(&xdr, &args->seq_args, &hdr);
2320 encode_putfh(&xdr, args->dir_fh, &hdr);
2321 encode_lookup(&xdr, args->name, &hdr);
2322 replen = hdr.replen; /* get the attribute into args->page */
2323 encode_fs_locations(&xdr, args->bitmask, &hdr);
2324
2325 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2326 0, PAGE_SIZE);
2327 encode_nops(&hdr);
2328 return 0;
2329 }
2330
2331 #if defined(CONFIG_NFS_V4_1)
2332 /*
2333 * EXCHANGE_ID request
2334 */
2335 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2336 struct nfs41_exchange_id_args *args)
2337 {
2338 struct xdr_stream xdr;
2339 struct compound_hdr hdr = {
2340 .minorversion = args->client->cl_minorversion,
2341 };
2342
2343 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2344 encode_compound_hdr(&xdr, req, &hdr);
2345 encode_exchange_id(&xdr, args, &hdr);
2346 encode_nops(&hdr);
2347 return 0;
2348 }
2349
2350 /*
2351 * a CREATE_SESSION request
2352 */
2353 static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
2354 struct nfs41_create_session_args *args)
2355 {
2356 struct xdr_stream xdr;
2357 struct compound_hdr hdr = {
2358 .minorversion = args->client->cl_minorversion,
2359 };
2360
2361 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2362 encode_compound_hdr(&xdr, req, &hdr);
2363 encode_create_session(&xdr, args, &hdr);
2364 encode_nops(&hdr);
2365 return 0;
2366 }
2367
2368 /*
2369 * a DESTROY_SESSION request
2370 */
2371 static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
2372 struct nfs4_session *session)
2373 {
2374 struct xdr_stream xdr;
2375 struct compound_hdr hdr = {
2376 .minorversion = session->clp->cl_minorversion,
2377 };
2378
2379 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2380 encode_compound_hdr(&xdr, req, &hdr);
2381 encode_destroy_session(&xdr, session, &hdr);
2382 encode_nops(&hdr);
2383 return 0;
2384 }
2385
2386 /*
2387 * a SEQUENCE request
2388 */
2389 static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
2390 struct nfs4_sequence_args *args)
2391 {
2392 struct xdr_stream xdr;
2393 struct compound_hdr hdr = {
2394 .minorversion = nfs4_xdr_minorversion(args),
2395 };
2396
2397 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2398 encode_compound_hdr(&xdr, req, &hdr);
2399 encode_sequence(&xdr, args, &hdr);
2400 encode_nops(&hdr);
2401 return 0;
2402 }
2403
2404 /*
2405 * a GET_LEASE_TIME request
2406 */
2407 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2408 struct nfs4_get_lease_time_args *args)
2409 {
2410 struct xdr_stream xdr;
2411 struct compound_hdr hdr = {
2412 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2413 };
2414 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2415
2416 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2417 encode_compound_hdr(&xdr, req, &hdr);
2418 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2419 encode_putrootfh(&xdr, &hdr);
2420 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2421 encode_nops(&hdr);
2422 return 0;
2423 }
2424 #endif /* CONFIG_NFS_V4_1 */
2425
2426 /*
2427 * START OF "GENERIC" DECODE ROUTINES.
2428 * These may look a little ugly since they are imported from a "generic"
2429 * set of XDR encode/decode routines which are intended to be shared by
2430 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2431 *
2432 * If the pain of reading these is too great, it should be a straightforward
2433 * task to translate them into Linux-specific versions which are more
2434 * consistent with the style used in NFSv2/v3...
2435 */
2436 #define READ64(x) do { \
2437 (x) = (u64)ntohl(*p++) << 32; \
2438 (x) |= ntohl(*p++); \
2439 } while (0)
2440 #define READTIME(x) do { \
2441 p++; \
2442 (x.tv_sec) = ntohl(*p++); \
2443 (x.tv_nsec) = ntohl(*p++); \
2444 } while (0)
2445 #define COPYMEM(x,nbytes) do { \
2446 memcpy((x), p, nbytes); \
2447 p += XDR_QUADLEN(nbytes); \
2448 } while (0)
2449
2450 #define READ_BUF(nbytes) do { \
2451 p = xdr_inline_decode(xdr, nbytes); \
2452 if (unlikely(!p)) { \
2453 dprintk("nfs: %s: prematurely hit end of receive" \
2454 " buffer\n", __func__); \
2455 dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2456 __func__, xdr->p, nbytes, xdr->end); \
2457 return -EIO; \
2458 } \
2459 } while (0)
2460
2461 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2462 {
2463 __be32 *p;
2464
2465 READ_BUF(4);
2466 *len = be32_to_cpup(p++);
2467 READ_BUF(*len);
2468 *string = (char *)p;
2469 return 0;
2470 }
2471
2472 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2473 {
2474 __be32 *p;
2475
2476 READ_BUF(8);
2477 hdr->status = be32_to_cpup(p++);
2478 hdr->taglen = be32_to_cpup(p++);
2479
2480 READ_BUF(hdr->taglen + 4);
2481 hdr->tag = (char *)p;
2482 p += XDR_QUADLEN(hdr->taglen);
2483 hdr->nops = be32_to_cpup(p++);
2484 if (unlikely(hdr->nops < 1))
2485 return nfs4_stat_to_errno(hdr->status);
2486 return 0;
2487 }
2488
2489 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2490 {
2491 __be32 *p;
2492 uint32_t opnum;
2493 int32_t nfserr;
2494
2495 READ_BUF(8);
2496 opnum = be32_to_cpup(p++);
2497 if (opnum != expected) {
2498 dprintk("nfs: Server returned operation"
2499 " %d but we issued a request for %d\n",
2500 opnum, expected);
2501 return -EIO;
2502 }
2503 nfserr = be32_to_cpup(p++);
2504 if (nfserr != NFS_OK)
2505 return nfs4_stat_to_errno(nfserr);
2506 return 0;
2507 }
2508
2509 /* Dummy routine */
2510 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2511 {
2512 __be32 *p;
2513 unsigned int strlen;
2514 char *str;
2515
2516 READ_BUF(12);
2517 return decode_opaque_inline(xdr, &strlen, &str);
2518 }
2519
2520 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2521 {
2522 uint32_t bmlen;
2523 __be32 *p;
2524
2525 READ_BUF(4);
2526 bmlen = be32_to_cpup(p++);
2527
2528 bitmap[0] = bitmap[1] = 0;
2529 READ_BUF((bmlen << 2));
2530 if (bmlen > 0) {
2531 bitmap[0] = be32_to_cpup(p++);
2532 if (bmlen > 1)
2533 bitmap[1] = be32_to_cpup(p++);
2534 }
2535 return 0;
2536 }
2537
2538 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2539 {
2540 __be32 *p;
2541
2542 READ_BUF(4);
2543 *attrlen = be32_to_cpup(p++);
2544 *savep = xdr->p;
2545 return 0;
2546 }
2547
2548 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2549 {
2550 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2551 decode_attr_bitmap(xdr, bitmask);
2552 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2553 } else
2554 bitmask[0] = bitmask[1] = 0;
2555 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2556 return 0;
2557 }
2558
2559 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2560 {
2561 __be32 *p;
2562 int ret = 0;
2563
2564 *type = 0;
2565 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2566 return -EIO;
2567 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2568 READ_BUF(4);
2569 *type = be32_to_cpup(p++);
2570 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2571 dprintk("%s: bad type %d\n", __func__, *type);
2572 return -EIO;
2573 }
2574 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2575 ret = NFS_ATTR_FATTR_TYPE;
2576 }
2577 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2578 return ret;
2579 }
2580
2581 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2582 {
2583 __be32 *p;
2584 int ret = 0;
2585
2586 *change = 0;
2587 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2588 return -EIO;
2589 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2590 READ_BUF(8);
2591 READ64(*change);
2592 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2593 ret = NFS_ATTR_FATTR_CHANGE;
2594 }
2595 dprintk("%s: change attribute=%Lu\n", __func__,
2596 (unsigned long long)*change);
2597 return ret;
2598 }
2599
2600 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2601 {
2602 __be32 *p;
2603 int ret = 0;
2604
2605 *size = 0;
2606 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2607 return -EIO;
2608 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2609 READ_BUF(8);
2610 READ64(*size);
2611 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2612 ret = NFS_ATTR_FATTR_SIZE;
2613 }
2614 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2615 return ret;
2616 }
2617
2618 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2619 {
2620 __be32 *p;
2621
2622 *res = 0;
2623 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2624 return -EIO;
2625 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2626 READ_BUF(4);
2627 *res = be32_to_cpup(p++);
2628 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2629 }
2630 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2631 return 0;
2632 }
2633
2634 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2635 {
2636 __be32 *p;
2637
2638 *res = 0;
2639 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2640 return -EIO;
2641 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2642 READ_BUF(4);
2643 *res = be32_to_cpup(p++);
2644 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2645 }
2646 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2647 return 0;
2648 }
2649
2650 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2651 {
2652 __be32 *p;
2653 int ret = 0;
2654
2655 fsid->major = 0;
2656 fsid->minor = 0;
2657 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2658 return -EIO;
2659 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2660 READ_BUF(16);
2661 READ64(fsid->major);
2662 READ64(fsid->minor);
2663 bitmap[0] &= ~FATTR4_WORD0_FSID;
2664 ret = NFS_ATTR_FATTR_FSID;
2665 }
2666 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2667 (unsigned long long)fsid->major,
2668 (unsigned long long)fsid->minor);
2669 return ret;
2670 }
2671
2672 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2673 {
2674 __be32 *p;
2675
2676 *res = 60;
2677 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2678 return -EIO;
2679 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2680 READ_BUF(4);
2681 *res = be32_to_cpup(p++);
2682 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2683 }
2684 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2685 return 0;
2686 }
2687
2688 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2689 {
2690 __be32 *p;
2691
2692 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2693 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2694 return -EIO;
2695 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2696 READ_BUF(4);
2697 *res = be32_to_cpup(p++);
2698 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2699 }
2700 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2701 return 0;
2702 }
2703
2704 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2705 {
2706 __be32 *p;
2707 int ret = 0;
2708
2709 *fileid = 0;
2710 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2711 return -EIO;
2712 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2713 READ_BUF(8);
2714 READ64(*fileid);
2715 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2716 ret = NFS_ATTR_FATTR_FILEID;
2717 }
2718 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2719 return ret;
2720 }
2721
2722 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2723 {
2724 __be32 *p;
2725 int ret = 0;
2726
2727 *fileid = 0;
2728 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2729 return -EIO;
2730 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2731 READ_BUF(8);
2732 READ64(*fileid);
2733 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2734 ret = NFS_ATTR_FATTR_FILEID;
2735 }
2736 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2737 return ret;
2738 }
2739
2740 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2741 {
2742 __be32 *p;
2743 int status = 0;
2744
2745 *res = 0;
2746 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2747 return -EIO;
2748 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2749 READ_BUF(8);
2750 READ64(*res);
2751 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2752 }
2753 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2754 return status;
2755 }
2756
2757 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2758 {
2759 __be32 *p;
2760 int status = 0;
2761
2762 *res = 0;
2763 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2764 return -EIO;
2765 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2766 READ_BUF(8);
2767 READ64(*res);
2768 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2769 }
2770 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2771 return status;
2772 }
2773
2774 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2775 {
2776 __be32 *p;
2777 int status = 0;
2778
2779 *res = 0;
2780 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2781 return -EIO;
2782 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2783 READ_BUF(8);
2784 READ64(*res);
2785 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2786 }
2787 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2788 return status;
2789 }
2790
2791 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2792 {
2793 u32 n;
2794 __be32 *p;
2795 int status = 0;
2796
2797 READ_BUF(4);
2798 n = be32_to_cpup(p++);
2799 if (n == 0)
2800 goto root_path;
2801 dprintk("path ");
2802 path->ncomponents = 0;
2803 while (path->ncomponents < n) {
2804 struct nfs4_string *component = &path->components[path->ncomponents];
2805 status = decode_opaque_inline(xdr, &component->len, &component->data);
2806 if (unlikely(status != 0))
2807 goto out_eio;
2808 if (path->ncomponents != n)
2809 dprintk("/");
2810 dprintk("%s", component->data);
2811 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2812 path->ncomponents++;
2813 else {
2814 dprintk("cannot parse %d components in path\n", n);
2815 goto out_eio;
2816 }
2817 }
2818 out:
2819 dprintk("\n");
2820 return status;
2821 root_path:
2822 /* a root pathname is sent as a zero component4 */
2823 path->ncomponents = 1;
2824 path->components[0].len=0;
2825 path->components[0].data=NULL;
2826 dprintk("path /\n");
2827 goto out;
2828 out_eio:
2829 dprintk(" status %d", status);
2830 status = -EIO;
2831 goto out;
2832 }
2833
2834 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2835 {
2836 int n;
2837 __be32 *p;
2838 int status = -EIO;
2839
2840 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2841 goto out;
2842 status = 0;
2843 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2844 goto out;
2845 dprintk("%s: fsroot ", __func__);
2846 status = decode_pathname(xdr, &res->fs_path);
2847 if (unlikely(status != 0))
2848 goto out;
2849 READ_BUF(4);
2850 n = be32_to_cpup(p++);
2851 if (n <= 0)
2852 goto out_eio;
2853 res->nlocations = 0;
2854 while (res->nlocations < n) {
2855 u32 m;
2856 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2857
2858 READ_BUF(4);
2859 m = be32_to_cpup(p++);
2860
2861 loc->nservers = 0;
2862 dprintk("%s: servers ", __func__);
2863 while (loc->nservers < m) {
2864 struct nfs4_string *server = &loc->servers[loc->nservers];
2865 status = decode_opaque_inline(xdr, &server->len, &server->data);
2866 if (unlikely(status != 0))
2867 goto out_eio;
2868 dprintk("%s ", server->data);
2869 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2870 loc->nservers++;
2871 else {
2872 unsigned int i;
2873 dprintk("%s: using first %u of %u servers "
2874 "returned for location %u\n",
2875 __func__,
2876 NFS4_FS_LOCATION_MAXSERVERS,
2877 m, res->nlocations);
2878 for (i = loc->nservers; i < m; i++) {
2879 unsigned int len;
2880 char *data;
2881 status = decode_opaque_inline(xdr, &len, &data);
2882 if (unlikely(status != 0))
2883 goto out_eio;
2884 }
2885 }
2886 }
2887 status = decode_pathname(xdr, &loc->rootpath);
2888 if (unlikely(status != 0))
2889 goto out_eio;
2890 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2891 res->nlocations++;
2892 }
2893 if (res->nlocations != 0)
2894 status = NFS_ATTR_FATTR_V4_REFERRAL;
2895 out:
2896 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
2897 return status;
2898 out_eio:
2899 status = -EIO;
2900 goto out;
2901 }
2902
2903 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2904 {
2905 __be32 *p;
2906 int status = 0;
2907
2908 *res = 0;
2909 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2910 return -EIO;
2911 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2912 READ_BUF(8);
2913 READ64(*res);
2914 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2915 }
2916 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
2917 return status;
2918 }
2919
2920 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2921 {
2922 __be32 *p;
2923 int status = 0;
2924
2925 *maxlink = 1;
2926 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2927 return -EIO;
2928 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2929 READ_BUF(4);
2930 *maxlink = be32_to_cpup(p++);
2931 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2932 }
2933 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
2934 return status;
2935 }
2936
2937 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2938 {
2939 __be32 *p;
2940 int status = 0;
2941
2942 *maxname = 1024;
2943 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2944 return -EIO;
2945 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2946 READ_BUF(4);
2947 *maxname = be32_to_cpup(p++);
2948 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2949 }
2950 dprintk("%s: maxname=%u\n", __func__, *maxname);
2951 return status;
2952 }
2953
2954 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2955 {
2956 __be32 *p;
2957 int status = 0;
2958
2959 *res = 1024;
2960 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2961 return -EIO;
2962 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2963 uint64_t maxread;
2964 READ_BUF(8);
2965 READ64(maxread);
2966 if (maxread > 0x7FFFFFFF)
2967 maxread = 0x7FFFFFFF;
2968 *res = (uint32_t)maxread;
2969 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2970 }
2971 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
2972 return status;
2973 }
2974
2975 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2976 {
2977 __be32 *p;
2978 int status = 0;
2979
2980 *res = 1024;
2981 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2982 return -EIO;
2983 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2984 uint64_t maxwrite;
2985 READ_BUF(8);
2986 READ64(maxwrite);
2987 if (maxwrite > 0x7FFFFFFF)
2988 maxwrite = 0x7FFFFFFF;
2989 *res = (uint32_t)maxwrite;
2990 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2991 }
2992 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
2993 return status;
2994 }
2995
2996 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
2997 {
2998 uint32_t tmp;
2999 __be32 *p;
3000 int ret = 0;
3001
3002 *mode = 0;
3003 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3004 return -EIO;
3005 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3006 READ_BUF(4);
3007 tmp = be32_to_cpup(p++);
3008 *mode = tmp & ~S_IFMT;
3009 bitmap[1] &= ~FATTR4_WORD1_MODE;
3010 ret = NFS_ATTR_FATTR_MODE;
3011 }
3012 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3013 return ret;
3014 }
3015
3016 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3017 {
3018 __be32 *p;
3019 int ret = 0;
3020
3021 *nlink = 1;
3022 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3023 return -EIO;
3024 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3025 READ_BUF(4);
3026 *nlink = be32_to_cpup(p++);
3027 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3028 ret = NFS_ATTR_FATTR_NLINK;
3029 }
3030 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3031 return ret;
3032 }
3033
3034 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
3035 {
3036 uint32_t len;
3037 __be32 *p;
3038 int ret = 0;
3039
3040 *uid = -2;
3041 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3042 return -EIO;
3043 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3044 READ_BUF(4);
3045 len = be32_to_cpup(p++);
3046 READ_BUF(len);
3047 if (len < XDR_MAX_NETOBJ) {
3048 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3049 ret = NFS_ATTR_FATTR_OWNER;
3050 else
3051 dprintk("%s: nfs_map_name_to_uid failed!\n",
3052 __func__);
3053 } else
3054 dprintk("%s: name too long (%u)!\n",
3055 __func__, len);
3056 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3057 }
3058 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3059 return ret;
3060 }
3061
3062 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
3063 {
3064 uint32_t len;
3065 __be32 *p;
3066 int ret = 0;
3067
3068 *gid = -2;
3069 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3070 return -EIO;
3071 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3072 READ_BUF(4);
3073 len = be32_to_cpup(p++);
3074 READ_BUF(len);
3075 if (len < XDR_MAX_NETOBJ) {
3076 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3077 ret = NFS_ATTR_FATTR_GROUP;
3078 else
3079 dprintk("%s: nfs_map_group_to_gid failed!\n",
3080 __func__);
3081 } else
3082 dprintk("%s: name too long (%u)!\n",
3083 __func__, len);
3084 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3085 }
3086 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3087 return ret;
3088 }
3089
3090 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3091 {
3092 uint32_t major = 0, minor = 0;
3093 __be32 *p;
3094 int ret = 0;
3095
3096 *rdev = MKDEV(0,0);
3097 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3098 return -EIO;
3099 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3100 dev_t tmp;
3101
3102 READ_BUF(8);
3103 major = be32_to_cpup(p++);
3104 minor = be32_to_cpup(p++);
3105 tmp = MKDEV(major, minor);
3106 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3107 *rdev = tmp;
3108 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3109 ret = NFS_ATTR_FATTR_RDEV;
3110 }
3111 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3112 return ret;
3113 }
3114
3115 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3116 {
3117 __be32 *p;
3118 int status = 0;
3119
3120 *res = 0;
3121 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3122 return -EIO;
3123 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3124 READ_BUF(8);
3125 READ64(*res);
3126 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3127 }
3128 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3129 return status;
3130 }
3131
3132 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3133 {
3134 __be32 *p;
3135 int status = 0;
3136
3137 *res = 0;
3138 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3139 return -EIO;
3140 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3141 READ_BUF(8);
3142 READ64(*res);
3143 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3144 }
3145 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3146 return status;
3147 }
3148
3149 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3150 {
3151 __be32 *p;
3152 int status = 0;
3153
3154 *res = 0;
3155 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3156 return -EIO;
3157 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3158 READ_BUF(8);
3159 READ64(*res);
3160 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3161 }
3162 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3163 return status;
3164 }
3165
3166 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3167 {
3168 __be32 *p;
3169 int ret = 0;
3170
3171 *used = 0;
3172 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3173 return -EIO;
3174 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3175 READ_BUF(8);
3176 READ64(*used);
3177 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3178 ret = NFS_ATTR_FATTR_SPACE_USED;
3179 }
3180 dprintk("%s: space used=%Lu\n", __func__,
3181 (unsigned long long)*used);
3182 return ret;
3183 }
3184
3185 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3186 {
3187 __be32 *p;
3188 uint64_t sec;
3189 uint32_t nsec;
3190
3191 READ_BUF(12);
3192 READ64(sec);
3193 nsec = be32_to_cpup(p++);
3194 time->tv_sec = (time_t)sec;
3195 time->tv_nsec = (long)nsec;
3196 return 0;
3197 }
3198
3199 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3200 {
3201 int status = 0;
3202
3203 time->tv_sec = 0;
3204 time->tv_nsec = 0;
3205 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3206 return -EIO;
3207 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3208 status = decode_attr_time(xdr, time);
3209 if (status == 0)
3210 status = NFS_ATTR_FATTR_ATIME;
3211 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3212 }
3213 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3214 return status;
3215 }
3216
3217 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3218 {
3219 int status = 0;
3220
3221 time->tv_sec = 0;
3222 time->tv_nsec = 0;
3223 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3224 return -EIO;
3225 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3226 status = decode_attr_time(xdr, time);
3227 if (status == 0)
3228 status = NFS_ATTR_FATTR_CTIME;
3229 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3230 }
3231 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3232 return status;
3233 }
3234
3235 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3236 {
3237 int status = 0;
3238
3239 time->tv_sec = 0;
3240 time->tv_nsec = 0;
3241 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3242 return -EIO;
3243 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3244 status = decode_attr_time(xdr, time);
3245 if (status == 0)
3246 status = NFS_ATTR_FATTR_MTIME;
3247 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3248 }
3249 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3250 return status;
3251 }
3252
3253 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3254 {
3255 unsigned int attrwords = XDR_QUADLEN(attrlen);
3256 unsigned int nwords = xdr->p - savep;
3257
3258 if (unlikely(attrwords != nwords)) {
3259 dprintk("%s: server returned incorrect attribute length: "
3260 "%u %c %u\n",
3261 __func__,
3262 attrwords << 2,
3263 (attrwords < nwords) ? '<' : '>',
3264 nwords << 2);
3265 return -EIO;
3266 }
3267 return 0;
3268 }
3269
3270 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3271 {
3272 __be32 *p;
3273
3274 READ_BUF(20);
3275 cinfo->atomic = be32_to_cpup(p++);
3276 READ64(cinfo->before);
3277 READ64(cinfo->after);
3278 return 0;
3279 }
3280
3281 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3282 {
3283 __be32 *p;
3284 uint32_t supp, acc;
3285 int status;
3286
3287 status = decode_op_hdr(xdr, OP_ACCESS);
3288 if (status)
3289 return status;
3290 READ_BUF(8);
3291 supp = be32_to_cpup(p++);
3292 acc = be32_to_cpup(p++);
3293 access->supported = supp;
3294 access->access = acc;
3295 return 0;
3296 }
3297
3298 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3299 {
3300 __be32 *p;
3301 int status;
3302
3303 status = decode_op_hdr(xdr, OP_CLOSE);
3304 if (status != -EIO)
3305 nfs_increment_open_seqid(status, res->seqid);
3306 if (status)
3307 return status;
3308 READ_BUF(NFS4_STATEID_SIZE);
3309 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3310 return 0;
3311 }
3312
3313 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3314 {
3315 __be32 *p;
3316 int status;
3317
3318 status = decode_op_hdr(xdr, OP_COMMIT);
3319 if (status)
3320 return status;
3321 READ_BUF(8);
3322 COPYMEM(res->verf->verifier, 8);
3323 return 0;
3324 }
3325
3326 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3327 {
3328 __be32 *p;
3329 uint32_t bmlen;
3330 int status;
3331
3332 status = decode_op_hdr(xdr, OP_CREATE);
3333 if (status)
3334 return status;
3335 if ((status = decode_change_info(xdr, cinfo)))
3336 return status;
3337 READ_BUF(4);
3338 bmlen = be32_to_cpup(p++);
3339 READ_BUF(bmlen << 2);
3340 return 0;
3341 }
3342
3343 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3344 {
3345 __be32 *savep;
3346 uint32_t attrlen, bitmap[2] = {0};
3347 int status;
3348
3349 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3350 goto xdr_error;
3351 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3352 goto xdr_error;
3353 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3354 goto xdr_error;
3355 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3356 goto xdr_error;
3357 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3358 goto xdr_error;
3359 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3360 goto xdr_error;
3361 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3362 goto xdr_error;
3363 status = verify_attr_len(xdr, savep, attrlen);
3364 xdr_error:
3365 dprintk("%s: xdr returned %d!\n", __func__, -status);
3366 return status;
3367 }
3368
3369 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3370 {
3371 __be32 *savep;
3372 uint32_t attrlen, bitmap[2] = {0};
3373 int status;
3374
3375 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3376 goto xdr_error;
3377 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3378 goto xdr_error;
3379 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3380 goto xdr_error;
3381
3382 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3383 goto xdr_error;
3384 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3385 goto xdr_error;
3386 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3387 goto xdr_error;
3388 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3389 goto xdr_error;
3390 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3391 goto xdr_error;
3392 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3393 goto xdr_error;
3394
3395 status = verify_attr_len(xdr, savep, attrlen);
3396 xdr_error:
3397 dprintk("%s: xdr returned %d!\n", __func__, -status);
3398 return status;
3399 }
3400
3401 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3402 {
3403 __be32 *savep;
3404 uint32_t attrlen, bitmap[2] = {0};
3405 int status;
3406
3407 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3408 goto xdr_error;
3409 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3410 goto xdr_error;
3411 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3412 goto xdr_error;
3413
3414 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3415 goto xdr_error;
3416 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3417 goto xdr_error;
3418
3419 status = verify_attr_len(xdr, savep, attrlen);
3420 xdr_error:
3421 dprintk("%s: xdr returned %d!\n", __func__, -status);
3422 return status;
3423 }
3424
3425 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3426 {
3427 __be32 *savep;
3428 uint32_t attrlen,
3429 bitmap[2] = {0},
3430 type;
3431 int status;
3432 umode_t fmode = 0;
3433 uint64_t fileid;
3434
3435 status = decode_op_hdr(xdr, OP_GETATTR);
3436 if (status < 0)
3437 goto xdr_error;
3438
3439 status = decode_attr_bitmap(xdr, bitmap);
3440 if (status < 0)
3441 goto xdr_error;
3442
3443 status = decode_attr_length(xdr, &attrlen, &savep);
3444 if (status < 0)
3445 goto xdr_error;
3446
3447
3448 status = decode_attr_type(xdr, bitmap, &type);
3449 if (status < 0)
3450 goto xdr_error;
3451 fattr->mode = 0;
3452 if (status != 0) {
3453 fattr->mode |= nfs_type2fmt[type];
3454 fattr->valid |= status;
3455 }
3456
3457 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3458 if (status < 0)
3459 goto xdr_error;
3460 fattr->valid |= status;
3461
3462 status = decode_attr_size(xdr, bitmap, &fattr->size);
3463 if (status < 0)
3464 goto xdr_error;
3465 fattr->valid |= status;
3466
3467 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3468 if (status < 0)
3469 goto xdr_error;
3470 fattr->valid |= status;
3471
3472 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3473 if (status < 0)
3474 goto xdr_error;
3475 fattr->valid |= status;
3476
3477 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3478 struct nfs4_fs_locations,
3479 fattr));
3480 if (status < 0)
3481 goto xdr_error;
3482 fattr->valid |= status;
3483
3484 status = decode_attr_mode(xdr, bitmap, &fmode);
3485 if (status < 0)
3486 goto xdr_error;
3487 if (status != 0) {
3488 fattr->mode |= fmode;
3489 fattr->valid |= status;
3490 }
3491
3492 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3493 if (status < 0)
3494 goto xdr_error;
3495 fattr->valid |= status;
3496
3497 status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid);
3498 if (status < 0)
3499 goto xdr_error;
3500 fattr->valid |= status;
3501
3502 status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid);
3503 if (status < 0)
3504 goto xdr_error;
3505 fattr->valid |= status;
3506
3507 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3508 if (status < 0)
3509 goto xdr_error;
3510 fattr->valid |= status;
3511
3512 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3513 if (status < 0)
3514 goto xdr_error;
3515 fattr->valid |= status;
3516
3517 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3518 if (status < 0)
3519 goto xdr_error;
3520 fattr->valid |= status;
3521
3522 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3523 if (status < 0)
3524 goto xdr_error;
3525 fattr->valid |= status;
3526
3527 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3528 if (status < 0)
3529 goto xdr_error;
3530 fattr->valid |= status;
3531
3532 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3533 if (status < 0)
3534 goto xdr_error;
3535 if (status != 0 && !(fattr->valid & status)) {
3536 fattr->fileid = fileid;
3537 fattr->valid |= status;
3538 }
3539
3540 status = verify_attr_len(xdr, savep, attrlen);
3541 xdr_error:
3542 dprintk("%s: xdr returned %d\n", __func__, -status);
3543 return status;
3544 }
3545
3546
3547 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3548 {
3549 __be32 *savep;
3550 uint32_t attrlen, bitmap[2];
3551 int status;
3552
3553 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3554 goto xdr_error;
3555 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3556 goto xdr_error;
3557 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3558 goto xdr_error;
3559
3560 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3561
3562 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3563 goto xdr_error;
3564 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3565 goto xdr_error;
3566 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3567 goto xdr_error;
3568 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3569 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3570 goto xdr_error;
3571 fsinfo->wtpref = fsinfo->wtmax;
3572
3573 status = verify_attr_len(xdr, savep, attrlen);
3574 xdr_error:
3575 dprintk("%s: xdr returned %d!\n", __func__, -status);
3576 return status;
3577 }
3578
3579 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3580 {
3581 __be32 *p;
3582 uint32_t len;
3583 int status;
3584
3585 /* Zero handle first to allow comparisons */
3586 memset(fh, 0, sizeof(*fh));
3587
3588 status = decode_op_hdr(xdr, OP_GETFH);
3589 if (status)
3590 return status;
3591
3592 READ_BUF(4);
3593 len = be32_to_cpup(p++);
3594 if (len > NFS4_FHSIZE)
3595 return -EIO;
3596 fh->size = len;
3597 READ_BUF(len);
3598 COPYMEM(fh->data, len);
3599 return 0;
3600 }
3601
3602 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3603 {
3604 int status;
3605
3606 status = decode_op_hdr(xdr, OP_LINK);
3607 if (status)
3608 return status;
3609 return decode_change_info(xdr, cinfo);
3610 }
3611
3612 /*
3613 * We create the owner, so we know a proper owner.id length is 4.
3614 */
3615 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3616 {
3617 uint64_t offset, length, clientid;
3618 __be32 *p;
3619 uint32_t namelen, type;
3620
3621 READ_BUF(32);
3622 READ64(offset);
3623 READ64(length);
3624 type = be32_to_cpup(p++);
3625 if (fl != NULL) {
3626 fl->fl_start = (loff_t)offset;
3627 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3628 if (length == ~(uint64_t)0)
3629 fl->fl_end = OFFSET_MAX;
3630 fl->fl_type = F_WRLCK;
3631 if (type & 1)
3632 fl->fl_type = F_RDLCK;
3633 fl->fl_pid = 0;
3634 }
3635 READ64(clientid);
3636 namelen = be32_to_cpup(p++);
3637 READ_BUF(namelen);
3638 return -NFS4ERR_DENIED;
3639 }
3640
3641 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3642 {
3643 __be32 *p;
3644 int status;
3645
3646 status = decode_op_hdr(xdr, OP_LOCK);
3647 if (status == -EIO)
3648 goto out;
3649 if (status == 0) {
3650 READ_BUF(NFS4_STATEID_SIZE);
3651 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3652 } else if (status == -NFS4ERR_DENIED)
3653 status = decode_lock_denied(xdr, NULL);
3654 if (res->open_seqid != NULL)
3655 nfs_increment_open_seqid(status, res->open_seqid);
3656 nfs_increment_lock_seqid(status, res->lock_seqid);
3657 out:
3658 return status;
3659 }
3660
3661 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3662 {
3663 int status;
3664 status = decode_op_hdr(xdr, OP_LOCKT);
3665 if (status == -NFS4ERR_DENIED)
3666 return decode_lock_denied(xdr, res->denied);
3667 return status;
3668 }
3669
3670 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3671 {
3672 __be32 *p;
3673 int status;
3674
3675 status = decode_op_hdr(xdr, OP_LOCKU);
3676 if (status != -EIO)
3677 nfs_increment_lock_seqid(status, res->seqid);
3678 if (status == 0) {
3679 READ_BUF(NFS4_STATEID_SIZE);
3680 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3681 }
3682 return status;
3683 }
3684
3685 static int decode_lookup(struct xdr_stream *xdr)
3686 {
3687 return decode_op_hdr(xdr, OP_LOOKUP);
3688 }
3689
3690 /* This is too sick! */
3691 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3692 {
3693 __be32 *p;
3694 uint32_t limit_type, nblocks, blocksize;
3695
3696 READ_BUF(12);
3697 limit_type = be32_to_cpup(p++);
3698 switch (limit_type) {
3699 case 1:
3700 READ64(*maxsize);
3701 break;
3702 case 2:
3703 nblocks = be32_to_cpup(p++);
3704 blocksize = be32_to_cpup(p++);
3705 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3706 }
3707 return 0;
3708 }
3709
3710 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3711 {
3712 __be32 *p;
3713 uint32_t delegation_type;
3714
3715 READ_BUF(4);
3716 delegation_type = be32_to_cpup(p++);
3717 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3718 res->delegation_type = 0;
3719 return 0;
3720 }
3721 READ_BUF(NFS4_STATEID_SIZE+4);
3722 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
3723 res->do_recall = be32_to_cpup(p++);
3724
3725 switch (delegation_type) {
3726 case NFS4_OPEN_DELEGATE_READ:
3727 res->delegation_type = FMODE_READ;
3728 break;
3729 case NFS4_OPEN_DELEGATE_WRITE:
3730 res->delegation_type = FMODE_WRITE|FMODE_READ;
3731 if (decode_space_limit(xdr, &res->maxsize) < 0)
3732 return -EIO;
3733 }
3734 return decode_ace(xdr, NULL, res->server->nfs_client);
3735 }
3736
3737 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3738 {
3739 __be32 *p;
3740 uint32_t savewords, bmlen, i;
3741 int status;
3742
3743 status = decode_op_hdr(xdr, OP_OPEN);
3744 if (status != -EIO)
3745 nfs_increment_open_seqid(status, res->seqid);
3746 if (status)
3747 return status;
3748 READ_BUF(NFS4_STATEID_SIZE);
3749 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3750
3751 decode_change_info(xdr, &res->cinfo);
3752
3753 READ_BUF(8);
3754 res->rflags = be32_to_cpup(p++);
3755 bmlen = be32_to_cpup(p++);
3756 if (bmlen > 10)
3757 goto xdr_error;
3758
3759 READ_BUF(bmlen << 2);
3760 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3761 for (i = 0; i < savewords; ++i)
3762 res->attrset[i] = be32_to_cpup(p++);
3763 for (; i < NFS4_BITMAP_SIZE; i++)
3764 res->attrset[i] = 0;
3765
3766 return decode_delegation(xdr, res);
3767 xdr_error:
3768 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
3769 return -EIO;
3770 }
3771
3772 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3773 {
3774 __be32 *p;
3775 int status;
3776
3777 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3778 if (status != -EIO)
3779 nfs_increment_open_seqid(status, res->seqid);
3780 if (status)
3781 return status;
3782 READ_BUF(NFS4_STATEID_SIZE);
3783 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3784 return 0;
3785 }
3786
3787 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3788 {
3789 __be32 *p;
3790 int status;
3791
3792 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3793 if (status != -EIO)
3794 nfs_increment_open_seqid(status, res->seqid);
3795 if (status)
3796 return status;
3797 READ_BUF(NFS4_STATEID_SIZE);
3798 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3799 return 0;
3800 }
3801
3802 static int decode_putfh(struct xdr_stream *xdr)
3803 {
3804 return decode_op_hdr(xdr, OP_PUTFH);
3805 }
3806
3807 static int decode_putrootfh(struct xdr_stream *xdr)
3808 {
3809 return decode_op_hdr(xdr, OP_PUTROOTFH);
3810 }
3811
3812 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3813 {
3814 struct kvec *iov = req->rq_rcv_buf.head;
3815 __be32 *p;
3816 uint32_t count, eof, recvd, hdrlen;
3817 int status;
3818
3819 status = decode_op_hdr(xdr, OP_READ);
3820 if (status)
3821 return status;
3822 READ_BUF(8);
3823 eof = be32_to_cpup(p++);
3824 count = be32_to_cpup(p++);
3825 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3826 recvd = req->rq_rcv_buf.len - hdrlen;
3827 if (count > recvd) {
3828 dprintk("NFS: server cheating in read reply: "
3829 "count %u > recvd %u\n", count, recvd);
3830 count = recvd;
3831 eof = 0;
3832 }
3833 xdr_read_pages(xdr, count);
3834 res->eof = eof;
3835 res->count = count;
3836 return 0;
3837 }
3838
3839 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3840 {
3841 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3842 struct page *page = *rcvbuf->pages;
3843 struct kvec *iov = rcvbuf->head;
3844 size_t hdrlen;
3845 u32 recvd, pglen = rcvbuf->page_len;
3846 __be32 *end, *entry, *p, *kaddr;
3847 unsigned int nr = 0;
3848 int status;
3849
3850 status = decode_op_hdr(xdr, OP_READDIR);
3851 if (status)
3852 return status;
3853 READ_BUF(8);
3854 COPYMEM(readdir->verifier.data, 8);
3855 dprintk("%s: verifier = %08x:%08x\n",
3856 __func__,
3857 ((u32 *)readdir->verifier.data)[0],
3858 ((u32 *)readdir->verifier.data)[1]);
3859
3860
3861 hdrlen = (char *) p - (char *) iov->iov_base;
3862 recvd = rcvbuf->len - hdrlen;
3863 if (pglen > recvd)
3864 pglen = recvd;
3865 xdr_read_pages(xdr, pglen);
3866
3867 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3868 kaddr = p = kmap_atomic(page, KM_USER0);
3869 end = p + ((pglen + readdir->pgbase) >> 2);
3870 entry = p;
3871
3872 /* Make sure the packet actually has a value_follows and EOF entry */
3873 if ((entry + 1) > end)
3874 goto short_pkt;
3875
3876 for (; *p++; nr++) {
3877 u32 len, attrlen, xlen;
3878 if (end - p < 3)
3879 goto short_pkt;
3880 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3881 p += 2; /* cookie */
3882 len = ntohl(*p++); /* filename length */
3883 if (len > NFS4_MAXNAMLEN) {
3884 dprintk("NFS: giant filename in readdir (len 0x%x)\n",
3885 len);
3886 goto err_unmap;
3887 }
3888 xlen = XDR_QUADLEN(len);
3889 if (end - p < xlen + 1)
3890 goto short_pkt;
3891 dprintk("filename = %*s\n", len, (char *)p);
3892 p += xlen;
3893 len = ntohl(*p++); /* bitmap length */
3894 if (end - p < len + 1)
3895 goto short_pkt;
3896 p += len;
3897 attrlen = XDR_QUADLEN(ntohl(*p++));
3898 if (end - p < attrlen + 2)
3899 goto short_pkt;
3900 p += attrlen; /* attributes */
3901 entry = p;
3902 }
3903 /*
3904 * Apparently some server sends responses that are a valid size, but
3905 * contain no entries, and have value_follows==0 and EOF==0. For
3906 * those, just set the EOF marker.
3907 */
3908 if (!nr && entry[1] == 0) {
3909 dprintk("NFS: readdir reply truncated!\n");
3910 entry[1] = 1;
3911 }
3912 out:
3913 kunmap_atomic(kaddr, KM_USER0);
3914 return 0;
3915 short_pkt:
3916 /*
3917 * When we get a short packet there are 2 possibilities. We can
3918 * return an error, or fix up the response to look like a valid
3919 * response and return what we have so far. If there are no
3920 * entries and the packet was short, then return -EIO. If there
3921 * are valid entries in the response, return them and pretend that
3922 * the call was successful, but incomplete. The caller can retry the
3923 * readdir starting at the last cookie.
3924 */
3925 dprintk("%s: short packet at entry %d\n", __func__, nr);
3926 entry[0] = entry[1] = 0;
3927 if (nr)
3928 goto out;
3929 err_unmap:
3930 kunmap_atomic(kaddr, KM_USER0);
3931 return -errno_NFSERR_IO;
3932 }
3933
3934 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3935 {
3936 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3937 struct kvec *iov = rcvbuf->head;
3938 size_t hdrlen;
3939 u32 len, recvd;
3940 __be32 *p;
3941 char *kaddr;
3942 int status;
3943
3944 status = decode_op_hdr(xdr, OP_READLINK);
3945 if (status)
3946 return status;
3947
3948 /* Convert length of symlink */
3949 READ_BUF(4);
3950 len = be32_to_cpup(p++);
3951 if (len >= rcvbuf->page_len || len <= 0) {
3952 dprintk("nfs: server returned giant symlink!\n");
3953 return -ENAMETOOLONG;
3954 }
3955 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3956 recvd = req->rq_rcv_buf.len - hdrlen;
3957 if (recvd < len) {
3958 dprintk("NFS: server cheating in readlink reply: "
3959 "count %u > recvd %u\n", len, recvd);
3960 return -EIO;
3961 }
3962 xdr_read_pages(xdr, len);
3963 /*
3964 * The XDR encode routine has set things up so that
3965 * the link text will be copied directly into the
3966 * buffer. We just have to do overflow-checking,
3967 * and and null-terminate the text (the VFS expects
3968 * null-termination).
3969 */
3970 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3971 kaddr[len+rcvbuf->page_base] = '\0';
3972 kunmap_atomic(kaddr, KM_USER0);
3973 return 0;
3974 }
3975
3976 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3977 {
3978 int status;
3979
3980 status = decode_op_hdr(xdr, OP_REMOVE);
3981 if (status)
3982 goto out;
3983 status = decode_change_info(xdr, cinfo);
3984 out:
3985 return status;
3986 }
3987
3988 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3989 struct nfs4_change_info *new_cinfo)
3990 {
3991 int status;
3992
3993 status = decode_op_hdr(xdr, OP_RENAME);
3994 if (status)
3995 goto out;
3996 if ((status = decode_change_info(xdr, old_cinfo)))
3997 goto out;
3998 status = decode_change_info(xdr, new_cinfo);
3999 out:
4000 return status;
4001 }
4002
4003 static int decode_renew(struct xdr_stream *xdr)
4004 {
4005 return decode_op_hdr(xdr, OP_RENEW);
4006 }
4007
4008 static int
4009 decode_restorefh(struct xdr_stream *xdr)
4010 {
4011 return decode_op_hdr(xdr, OP_RESTOREFH);
4012 }
4013
4014 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4015 size_t *acl_len)
4016 {
4017 __be32 *savep;
4018 uint32_t attrlen,
4019 bitmap[2] = {0};
4020 struct kvec *iov = req->rq_rcv_buf.head;
4021 int status;
4022
4023 *acl_len = 0;
4024 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4025 goto out;
4026 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4027 goto out;
4028 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4029 goto out;
4030
4031 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4032 return -EIO;
4033 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4034 size_t hdrlen;
4035 u32 recvd;
4036
4037 /* We ignore &savep and don't do consistency checks on
4038 * the attr length. Let userspace figure it out.... */
4039 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4040 recvd = req->rq_rcv_buf.len - hdrlen;
4041 if (attrlen > recvd) {
4042 dprintk("NFS: server cheating in getattr"
4043 " acl reply: attrlen %u > recvd %u\n",
4044 attrlen, recvd);
4045 return -EINVAL;
4046 }
4047 xdr_read_pages(xdr, attrlen);
4048 *acl_len = attrlen;
4049 } else
4050 status = -EOPNOTSUPP;
4051
4052 out:
4053 return status;
4054 }
4055
4056 static int
4057 decode_savefh(struct xdr_stream *xdr)
4058 {
4059 return decode_op_hdr(xdr, OP_SAVEFH);
4060 }
4061
4062 static int decode_setattr(struct xdr_stream *xdr)
4063 {
4064 __be32 *p;
4065 uint32_t bmlen;
4066 int status;
4067
4068 status = decode_op_hdr(xdr, OP_SETATTR);
4069 if (status)
4070 return status;
4071 READ_BUF(4);
4072 bmlen = be32_to_cpup(p++);
4073 READ_BUF(bmlen << 2);
4074 return 0;
4075 }
4076
4077 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
4078 {
4079 __be32 *p;
4080 uint32_t opnum;
4081 int32_t nfserr;
4082
4083 READ_BUF(8);
4084 opnum = be32_to_cpup(p++);
4085 if (opnum != OP_SETCLIENTID) {
4086 dprintk("nfs: decode_setclientid: Server returned operation"
4087 " %d\n", opnum);
4088 return -EIO;
4089 }
4090 nfserr = be32_to_cpup(p++);
4091 if (nfserr == NFS_OK) {
4092 READ_BUF(8 + NFS4_VERIFIER_SIZE);
4093 READ64(clp->cl_clientid);
4094 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
4095 } else if (nfserr == NFSERR_CLID_INUSE) {
4096 uint32_t len;
4097
4098 /* skip netid string */
4099 READ_BUF(4);
4100 len = be32_to_cpup(p++);
4101 READ_BUF(len);
4102
4103 /* skip uaddr string */
4104 READ_BUF(4);
4105 len = be32_to_cpup(p++);
4106 READ_BUF(len);
4107 return -NFSERR_CLID_INUSE;
4108 } else
4109 return nfs4_stat_to_errno(nfserr);
4110
4111 return 0;
4112 }
4113
4114 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4115 {
4116 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4117 }
4118
4119 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4120 {
4121 __be32 *p;
4122 int status;
4123
4124 status = decode_op_hdr(xdr, OP_WRITE);
4125 if (status)
4126 return status;
4127
4128 READ_BUF(16);
4129 res->count = be32_to_cpup(p++);
4130 res->verf->committed = be32_to_cpup(p++);
4131 COPYMEM(res->verf->verifier, 8);
4132 return 0;
4133 }
4134
4135 static int decode_delegreturn(struct xdr_stream *xdr)
4136 {
4137 return decode_op_hdr(xdr, OP_DELEGRETURN);
4138 }
4139
4140 #if defined(CONFIG_NFS_V4_1)
4141 static int decode_exchange_id(struct xdr_stream *xdr,
4142 struct nfs41_exchange_id_res *res)
4143 {
4144 __be32 *p;
4145 uint32_t dummy;
4146 int status;
4147 struct nfs_client *clp = res->client;
4148
4149 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4150 if (status)
4151 return status;
4152
4153 READ_BUF(8);
4154 READ64(clp->cl_ex_clid);
4155 READ_BUF(12);
4156 clp->cl_seqid = be32_to_cpup(p++);
4157 clp->cl_exchange_flags = be32_to_cpup(p++);
4158
4159 /* We ask for SP4_NONE */
4160 dummy = be32_to_cpup(p++);
4161 if (dummy != SP4_NONE)
4162 return -EIO;
4163
4164 /* Throw away minor_id */
4165 READ_BUF(8);
4166
4167 /* Throw away Major id */
4168 READ_BUF(4);
4169 dummy = be32_to_cpup(p++);
4170 READ_BUF(dummy);
4171
4172 /* Throw away server_scope */
4173 READ_BUF(4);
4174 dummy = be32_to_cpup(p++);
4175 READ_BUF(dummy);
4176
4177 /* Throw away Implementation id array */
4178 READ_BUF(4);
4179 dummy = be32_to_cpup(p++);
4180 READ_BUF(dummy);
4181
4182 return 0;
4183 }
4184
4185 static int decode_chan_attrs(struct xdr_stream *xdr,
4186 struct nfs4_channel_attrs *attrs)
4187 {
4188 __be32 *p;
4189 u32 nr_attrs;
4190
4191 READ_BUF(28);
4192 attrs->headerpadsz = be32_to_cpup(p++);
4193 attrs->max_rqst_sz = be32_to_cpup(p++);
4194 attrs->max_resp_sz = be32_to_cpup(p++);
4195 attrs->max_resp_sz_cached = be32_to_cpup(p++);
4196 attrs->max_ops = be32_to_cpup(p++);
4197 attrs->max_reqs = be32_to_cpup(p++);
4198 nr_attrs = be32_to_cpup(p++);
4199 if (unlikely(nr_attrs > 1)) {
4200 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4201 __func__, nr_attrs);
4202 return -EINVAL;
4203 }
4204 if (nr_attrs == 1)
4205 READ_BUF(4); /* skip rdma_attrs */
4206 return 0;
4207 }
4208
4209 static int decode_create_session(struct xdr_stream *xdr,
4210 struct nfs41_create_session_res *res)
4211 {
4212 __be32 *p;
4213 int status;
4214 struct nfs_client *clp = res->client;
4215 struct nfs4_session *session = clp->cl_session;
4216
4217 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
4218
4219 if (status)
4220 return status;
4221
4222 /* sessionid */
4223 READ_BUF(NFS4_MAX_SESSIONID_LEN);
4224 COPYMEM(&session->sess_id, NFS4_MAX_SESSIONID_LEN);
4225
4226 /* seqid, flags */
4227 READ_BUF(8);
4228 clp->cl_seqid = be32_to_cpup(p++);
4229 session->flags = be32_to_cpup(p++);
4230
4231 /* Channel attributes */
4232 status = decode_chan_attrs(xdr, &session->fc_attrs);
4233 if (!status)
4234 status = decode_chan_attrs(xdr, &session->bc_attrs);
4235 return status;
4236 }
4237
4238 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4239 {
4240 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4241 }
4242 #endif /* CONFIG_NFS_V4_1 */
4243
4244 static int decode_sequence(struct xdr_stream *xdr,
4245 struct nfs4_sequence_res *res,
4246 struct rpc_rqst *rqstp)
4247 {
4248 #if defined(CONFIG_NFS_V4_1)
4249 struct nfs4_slot *slot;
4250 struct nfs4_sessionid id;
4251 u32 dummy;
4252 int status;
4253 __be32 *p;
4254
4255 if (!res->sr_session)
4256 return 0;
4257
4258 status = decode_op_hdr(xdr, OP_SEQUENCE);
4259 if (status)
4260 goto out_err;
4261
4262 /*
4263 * If the server returns different values for sessionID, slotID or
4264 * sequence number, the server is looney tunes.
4265 */
4266 status = -ESERVERFAULT;
4267
4268 slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid];
4269 READ_BUF(NFS4_MAX_SESSIONID_LEN + 20);
4270 COPYMEM(id.data, NFS4_MAX_SESSIONID_LEN);
4271 if (memcmp(id.data, res->sr_session->sess_id.data,
4272 NFS4_MAX_SESSIONID_LEN)) {
4273 dprintk("%s Invalid session id\n", __func__);
4274 goto out_err;
4275 }
4276 /* seqid */
4277 dummy = be32_to_cpup(p++);
4278 if (dummy != slot->seq_nr) {
4279 dprintk("%s Invalid sequence number\n", __func__);
4280 goto out_err;
4281 }
4282 /* slot id */
4283 dummy = be32_to_cpup(p++);
4284 if (dummy != res->sr_slotid) {
4285 dprintk("%s Invalid slot id\n", __func__);
4286 goto out_err;
4287 }
4288 /* highest slot id - currently not processed */
4289 dummy = be32_to_cpup(p++);
4290 /* target highest slot id - currently not processed */
4291 dummy = be32_to_cpup(p++);
4292 /* result flags - currently not processed */
4293 dummy = be32_to_cpup(p++);
4294 status = 0;
4295 out_err:
4296 res->sr_status = status;
4297 return status;
4298 #else /* CONFIG_NFS_V4_1 */
4299 return 0;
4300 #endif /* CONFIG_NFS_V4_1 */
4301 }
4302
4303 /*
4304 * END OF "GENERIC" DECODE ROUTINES.
4305 */
4306
4307 /*
4308 * Decode OPEN_DOWNGRADE response
4309 */
4310 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4311 {
4312 struct xdr_stream xdr;
4313 struct compound_hdr hdr;
4314 int status;
4315
4316 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4317 status = decode_compound_hdr(&xdr, &hdr);
4318 if (status)
4319 goto out;
4320 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4321 if (status)
4322 goto out;
4323 status = decode_putfh(&xdr);
4324 if (status)
4325 goto out;
4326 status = decode_open_downgrade(&xdr, res);
4327 if (status != 0)
4328 goto out;
4329 decode_getfattr(&xdr, res->fattr, res->server);
4330 out:
4331 return status;
4332 }
4333
4334 /*
4335 * Decode ACCESS response
4336 */
4337 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
4338 {
4339 struct xdr_stream xdr;
4340 struct compound_hdr hdr;
4341 int status;
4342
4343 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4344 status = decode_compound_hdr(&xdr, &hdr);
4345 if (status)
4346 goto out;
4347 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4348 if (status)
4349 goto out;
4350 status = decode_putfh(&xdr);
4351 if (status != 0)
4352 goto out;
4353 status = decode_access(&xdr, res);
4354 if (status != 0)
4355 goto out;
4356 decode_getfattr(&xdr, res->fattr, res->server);
4357 out:
4358 return status;
4359 }
4360
4361 /*
4362 * Decode LOOKUP response
4363 */
4364 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4365 {
4366 struct xdr_stream xdr;
4367 struct compound_hdr hdr;
4368 int status;
4369
4370 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4371 status = decode_compound_hdr(&xdr, &hdr);
4372 if (status)
4373 goto out;
4374 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4375 if (status)
4376 goto out;
4377 if ((status = decode_putfh(&xdr)) != 0)
4378 goto out;
4379 if ((status = decode_lookup(&xdr)) != 0)
4380 goto out;
4381 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4382 goto out;
4383 status = decode_getfattr(&xdr, res->fattr, res->server);
4384 out:
4385 return status;
4386 }
4387
4388 /*
4389 * Decode LOOKUP_ROOT response
4390 */
4391 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *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 if ((status = decode_putrootfh(&xdr)) != 0)
4405 goto out;
4406 if ((status = decode_getfh(&xdr, res->fh)) == 0)
4407 status = decode_getfattr(&xdr, res->fattr, res->server);
4408 out:
4409 return status;
4410 }
4411
4412 /*
4413 * Decode REMOVE response
4414 */
4415 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
4416 {
4417 struct xdr_stream xdr;
4418 struct compound_hdr hdr;
4419 int status;
4420
4421 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4422 status = decode_compound_hdr(&xdr, &hdr);
4423 if (status)
4424 goto out;
4425 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4426 if (status)
4427 goto out;
4428 if ((status = decode_putfh(&xdr)) != 0)
4429 goto out;
4430 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
4431 goto out;
4432 decode_getfattr(&xdr, &res->dir_attr, res->server);
4433 out:
4434 return status;
4435 }
4436
4437 /*
4438 * Decode RENAME response
4439 */
4440 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
4441 {
4442 struct xdr_stream xdr;
4443 struct compound_hdr hdr;
4444 int status;
4445
4446 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4447 status = decode_compound_hdr(&xdr, &hdr);
4448 if (status)
4449 goto out;
4450 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4451 if (status)
4452 goto out;
4453 if ((status = decode_putfh(&xdr)) != 0)
4454 goto out;
4455 if ((status = decode_savefh(&xdr)) != 0)
4456 goto out;
4457 if ((status = decode_putfh(&xdr)) != 0)
4458 goto out;
4459 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4460 goto out;
4461 /* Current FH is target directory */
4462 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
4463 goto out;
4464 if ((status = decode_restorefh(&xdr)) != 0)
4465 goto out;
4466 decode_getfattr(&xdr, res->old_fattr, res->server);
4467 out:
4468 return status;
4469 }
4470
4471 /*
4472 * Decode LINK response
4473 */
4474 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4475 {
4476 struct xdr_stream xdr;
4477 struct compound_hdr hdr;
4478 int status;
4479
4480 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4481 status = decode_compound_hdr(&xdr, &hdr);
4482 if (status)
4483 goto out;
4484 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4485 if (status)
4486 goto out;
4487 if ((status = decode_putfh(&xdr)) != 0)
4488 goto out;
4489 if ((status = decode_savefh(&xdr)) != 0)
4490 goto out;
4491 if ((status = decode_putfh(&xdr)) != 0)
4492 goto out;
4493 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4494 goto out;
4495 /*
4496 * Note order: OP_LINK leaves the directory as the current
4497 * filehandle.
4498 */
4499 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
4500 goto out;
4501 if ((status = decode_restorefh(&xdr)) != 0)
4502 goto out;
4503 decode_getfattr(&xdr, res->fattr, res->server);
4504 out:
4505 return status;
4506 }
4507
4508 /*
4509 * Decode CREATE response
4510 */
4511 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4512 {
4513 struct xdr_stream xdr;
4514 struct compound_hdr hdr;
4515 int status;
4516
4517 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4518 status = decode_compound_hdr(&xdr, &hdr);
4519 if (status)
4520 goto out;
4521 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4522 if (status)
4523 goto out;
4524 if ((status = decode_putfh(&xdr)) != 0)
4525 goto out;
4526 if ((status = decode_savefh(&xdr)) != 0)
4527 goto out;
4528 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4529 goto out;
4530 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4531 goto out;
4532 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
4533 goto out;
4534 if ((status = decode_restorefh(&xdr)) != 0)
4535 goto out;
4536 decode_getfattr(&xdr, res->dir_fattr, res->server);
4537 out:
4538 return status;
4539 }
4540
4541 /*
4542 * Decode SYMLINK response
4543 */
4544 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4545 {
4546 return nfs4_xdr_dec_create(rqstp, p, res);
4547 }
4548
4549 /*
4550 * Decode GETATTR response
4551 */
4552 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
4553 {
4554 struct xdr_stream xdr;
4555 struct compound_hdr hdr;
4556 int status;
4557
4558 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4559 status = decode_compound_hdr(&xdr, &hdr);
4560 if (status)
4561 goto out;
4562 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4563 if (status)
4564 goto out;
4565 status = decode_putfh(&xdr);
4566 if (status)
4567 goto out;
4568 status = decode_getfattr(&xdr, res->fattr, res->server);
4569 out:
4570 return status;
4571 }
4572
4573 /*
4574 * Encode an SETACL request
4575 */
4576 static int
4577 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
4578 {
4579 struct xdr_stream xdr;
4580 struct compound_hdr hdr = {
4581 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
4582 };
4583 int status;
4584
4585 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
4586 encode_compound_hdr(&xdr, req, &hdr);
4587 encode_sequence(&xdr, &args->seq_args, &hdr);
4588 encode_putfh(&xdr, args->fh, &hdr);
4589 status = encode_setacl(&xdr, args, &hdr);
4590 encode_nops(&hdr);
4591 return status;
4592 }
4593
4594 /*
4595 * Decode SETACL response
4596 */
4597 static int
4598 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
4599 struct nfs_setaclres *res)
4600 {
4601 struct xdr_stream xdr;
4602 struct compound_hdr hdr;
4603 int status;
4604
4605 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4606 status = decode_compound_hdr(&xdr, &hdr);
4607 if (status)
4608 goto out;
4609 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4610 if (status)
4611 goto out;
4612 status = decode_putfh(&xdr);
4613 if (status)
4614 goto out;
4615 status = decode_setattr(&xdr);
4616 out:
4617 return status;
4618 }
4619
4620 /*
4621 * Decode GETACL response
4622 */
4623 static int
4624 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
4625 struct nfs_getaclres *res)
4626 {
4627 struct xdr_stream xdr;
4628 struct compound_hdr hdr;
4629 int status;
4630
4631 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4632 status = decode_compound_hdr(&xdr, &hdr);
4633 if (status)
4634 goto out;
4635 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4636 if (status)
4637 goto out;
4638 status = decode_putfh(&xdr);
4639 if (status)
4640 goto out;
4641 status = decode_getacl(&xdr, rqstp, &res->acl_len);
4642
4643 out:
4644 return status;
4645 }
4646
4647 /*
4648 * Decode CLOSE response
4649 */
4650 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4651 {
4652 struct xdr_stream xdr;
4653 struct compound_hdr hdr;
4654 int status;
4655
4656 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4657 status = decode_compound_hdr(&xdr, &hdr);
4658 if (status)
4659 goto out;
4660 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4661 if (status)
4662 goto out;
4663 status = decode_putfh(&xdr);
4664 if (status)
4665 goto out;
4666 status = decode_close(&xdr, res);
4667 if (status != 0)
4668 goto out;
4669 /*
4670 * Note: Server may do delete on close for this file
4671 * in which case the getattr call will fail with
4672 * an ESTALE error. Shouldn't be a problem,
4673 * though, since fattr->valid will remain unset.
4674 */
4675 decode_getfattr(&xdr, res->fattr, res->server);
4676 out:
4677 return status;
4678 }
4679
4680 /*
4681 * Decode OPEN response
4682 */
4683 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4684 {
4685 struct xdr_stream xdr;
4686 struct compound_hdr hdr;
4687 int status;
4688
4689 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4690 status = decode_compound_hdr(&xdr, &hdr);
4691 if (status)
4692 goto out;
4693 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4694 if (status)
4695 goto out;
4696 status = decode_putfh(&xdr);
4697 if (status)
4698 goto out;
4699 status = decode_savefh(&xdr);
4700 if (status)
4701 goto out;
4702 status = decode_open(&xdr, res);
4703 if (status)
4704 goto out;
4705 if (decode_getfh(&xdr, &res->fh) != 0)
4706 goto out;
4707 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4708 goto out;
4709 if (decode_restorefh(&xdr) != 0)
4710 goto out;
4711 decode_getfattr(&xdr, res->dir_attr, res->server);
4712 out:
4713 return status;
4714 }
4715
4716 /*
4717 * Decode OPEN_CONFIRM response
4718 */
4719 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
4720 {
4721 struct xdr_stream xdr;
4722 struct compound_hdr hdr;
4723 int status;
4724
4725 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4726 status = decode_compound_hdr(&xdr, &hdr);
4727 if (status)
4728 goto out;
4729 status = decode_putfh(&xdr);
4730 if (status)
4731 goto out;
4732 status = decode_open_confirm(&xdr, res);
4733 out:
4734 return status;
4735 }
4736
4737 /*
4738 * Decode OPEN response
4739 */
4740 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4741 {
4742 struct xdr_stream xdr;
4743 struct compound_hdr hdr;
4744 int status;
4745
4746 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4747 status = decode_compound_hdr(&xdr, &hdr);
4748 if (status)
4749 goto out;
4750 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4751 if (status)
4752 goto out;
4753 status = decode_putfh(&xdr);
4754 if (status)
4755 goto out;
4756 status = decode_open(&xdr, res);
4757 if (status)
4758 goto out;
4759 decode_getfattr(&xdr, res->f_attr, res->server);
4760 out:
4761 return status;
4762 }
4763
4764 /*
4765 * Decode SETATTR response
4766 */
4767 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4768 {
4769 struct xdr_stream xdr;
4770 struct compound_hdr hdr;
4771 int status;
4772
4773 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4774 status = decode_compound_hdr(&xdr, &hdr);
4775 if (status)
4776 goto out;
4777 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4778 if (status)
4779 goto out;
4780 status = decode_putfh(&xdr);
4781 if (status)
4782 goto out;
4783 status = decode_setattr(&xdr);
4784 if (status)
4785 goto out;
4786 decode_getfattr(&xdr, res->fattr, res->server);
4787 out:
4788 return status;
4789 }
4790
4791 /*
4792 * Decode LOCK response
4793 */
4794 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4795 {
4796 struct xdr_stream xdr;
4797 struct compound_hdr hdr;
4798 int status;
4799
4800 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4801 status = decode_compound_hdr(&xdr, &hdr);
4802 if (status)
4803 goto out;
4804 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4805 if (status)
4806 goto out;
4807 status = decode_putfh(&xdr);
4808 if (status)
4809 goto out;
4810 status = decode_lock(&xdr, res);
4811 out:
4812 return status;
4813 }
4814
4815 /*
4816 * Decode LOCKT response
4817 */
4818 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
4819 {
4820 struct xdr_stream xdr;
4821 struct compound_hdr hdr;
4822 int status;
4823
4824 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4825 status = decode_compound_hdr(&xdr, &hdr);
4826 if (status)
4827 goto out;
4828 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4829 if (status)
4830 goto out;
4831 status = decode_putfh(&xdr);
4832 if (status)
4833 goto out;
4834 status = decode_lockt(&xdr, res);
4835 out:
4836 return status;
4837 }
4838
4839 /*
4840 * Decode LOCKU response
4841 */
4842 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
4843 {
4844 struct xdr_stream xdr;
4845 struct compound_hdr hdr;
4846 int status;
4847
4848 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4849 status = decode_compound_hdr(&xdr, &hdr);
4850 if (status)
4851 goto out;
4852 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4853 if (status)
4854 goto out;
4855 status = decode_putfh(&xdr);
4856 if (status)
4857 goto out;
4858 status = decode_locku(&xdr, res);
4859 out:
4860 return status;
4861 }
4862
4863 /*
4864 * Decode READLINK response
4865 */
4866 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
4867 struct nfs4_readlink_res *res)
4868 {
4869 struct xdr_stream xdr;
4870 struct compound_hdr hdr;
4871 int status;
4872
4873 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4874 status = decode_compound_hdr(&xdr, &hdr);
4875 if (status)
4876 goto out;
4877 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4878 if (status)
4879 goto out;
4880 status = decode_putfh(&xdr);
4881 if (status)
4882 goto out;
4883 status = decode_readlink(&xdr, rqstp);
4884 out:
4885 return status;
4886 }
4887
4888 /*
4889 * Decode READDIR response
4890 */
4891 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
4892 {
4893 struct xdr_stream xdr;
4894 struct compound_hdr hdr;
4895 int status;
4896
4897 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4898 status = decode_compound_hdr(&xdr, &hdr);
4899 if (status)
4900 goto out;
4901 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4902 if (status)
4903 goto out;
4904 status = decode_putfh(&xdr);
4905 if (status)
4906 goto out;
4907 status = decode_readdir(&xdr, rqstp, res);
4908 out:
4909 return status;
4910 }
4911
4912 /*
4913 * Decode Read response
4914 */
4915 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
4916 {
4917 struct xdr_stream xdr;
4918 struct compound_hdr hdr;
4919 int status;
4920
4921 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4922 status = decode_compound_hdr(&xdr, &hdr);
4923 if (status)
4924 goto out;
4925 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4926 if (status)
4927 goto out;
4928 status = decode_putfh(&xdr);
4929 if (status)
4930 goto out;
4931 status = decode_read(&xdr, rqstp, res);
4932 if (!status)
4933 status = res->count;
4934 out:
4935 return status;
4936 }
4937
4938 /*
4939 * Decode WRITE response
4940 */
4941 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4942 {
4943 struct xdr_stream xdr;
4944 struct compound_hdr hdr;
4945 int status;
4946
4947 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4948 status = decode_compound_hdr(&xdr, &hdr);
4949 if (status)
4950 goto out;
4951 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4952 if (status)
4953 goto out;
4954 status = decode_putfh(&xdr);
4955 if (status)
4956 goto out;
4957 status = decode_write(&xdr, res);
4958 if (status)
4959 goto out;
4960 decode_getfattr(&xdr, res->fattr, res->server);
4961 if (!status)
4962 status = res->count;
4963 out:
4964 return status;
4965 }
4966
4967 /*
4968 * Decode COMMIT response
4969 */
4970 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4971 {
4972 struct xdr_stream xdr;
4973 struct compound_hdr hdr;
4974 int status;
4975
4976 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4977 status = decode_compound_hdr(&xdr, &hdr);
4978 if (status)
4979 goto out;
4980 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4981 if (status)
4982 goto out;
4983 status = decode_putfh(&xdr);
4984 if (status)
4985 goto out;
4986 status = decode_commit(&xdr, res);
4987 if (status)
4988 goto out;
4989 decode_getfattr(&xdr, res->fattr, res->server);
4990 out:
4991 return status;
4992 }
4993
4994 /*
4995 * FSINFO request
4996 */
4997 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
4998 struct nfs4_fsinfo_res *res)
4999 {
5000 struct xdr_stream xdr;
5001 struct compound_hdr hdr;
5002 int status;
5003
5004 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5005 status = decode_compound_hdr(&xdr, &hdr);
5006 if (!status)
5007 status = decode_sequence(&xdr, &res->seq_res, req);
5008 if (!status)
5009 status = decode_putfh(&xdr);
5010 if (!status)
5011 status = decode_fsinfo(&xdr, res->fsinfo);
5012 return status;
5013 }
5014
5015 /*
5016 * PATHCONF request
5017 */
5018 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5019 struct nfs4_pathconf_res *res)
5020 {
5021 struct xdr_stream xdr;
5022 struct compound_hdr hdr;
5023 int status;
5024
5025 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5026 status = decode_compound_hdr(&xdr, &hdr);
5027 if (!status)
5028 status = decode_sequence(&xdr, &res->seq_res, req);
5029 if (!status)
5030 status = decode_putfh(&xdr);
5031 if (!status)
5032 status = decode_pathconf(&xdr, res->pathconf);
5033 return status;
5034 }
5035
5036 /*
5037 * STATFS request
5038 */
5039 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5040 struct nfs4_statfs_res *res)
5041 {
5042 struct xdr_stream xdr;
5043 struct compound_hdr hdr;
5044 int status;
5045
5046 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5047 status = decode_compound_hdr(&xdr, &hdr);
5048 if (!status)
5049 status = decode_sequence(&xdr, &res->seq_res, req);
5050 if (!status)
5051 status = decode_putfh(&xdr);
5052 if (!status)
5053 status = decode_statfs(&xdr, res->fsstat);
5054 return status;
5055 }
5056
5057 /*
5058 * GETATTR_BITMAP request
5059 */
5060 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
5061 {
5062 struct xdr_stream xdr;
5063 struct compound_hdr hdr;
5064 int status;
5065
5066 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5067 status = decode_compound_hdr(&xdr, &hdr);
5068 if (status)
5069 goto out;
5070 status = decode_sequence(&xdr, &res->seq_res, req);
5071 if (status)
5072 goto out;
5073 if ((status = decode_putfh(&xdr)) != 0)
5074 goto out;
5075 status = decode_server_caps(&xdr, res);
5076 out:
5077 return status;
5078 }
5079
5080 /*
5081 * Decode RENEW response
5082 */
5083 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5084 {
5085 struct xdr_stream xdr;
5086 struct compound_hdr hdr;
5087 int status;
5088
5089 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5090 status = decode_compound_hdr(&xdr, &hdr);
5091 if (!status)
5092 status = decode_renew(&xdr);
5093 return status;
5094 }
5095
5096 /*
5097 * a SETCLIENTID request
5098 */
5099 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5100 struct nfs_client *clp)
5101 {
5102 struct xdr_stream xdr;
5103 struct compound_hdr hdr;
5104 int status;
5105
5106 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5107 status = decode_compound_hdr(&xdr, &hdr);
5108 if (!status)
5109 status = decode_setclientid(&xdr, clp);
5110 return status;
5111 }
5112
5113 /*
5114 * a SETCLIENTID_CONFIRM request
5115 */
5116 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
5117 {
5118 struct xdr_stream xdr;
5119 struct compound_hdr hdr;
5120 int status;
5121
5122 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5123 status = decode_compound_hdr(&xdr, &hdr);
5124 if (!status)
5125 status = decode_setclientid_confirm(&xdr);
5126 if (!status)
5127 status = decode_putrootfh(&xdr);
5128 if (!status)
5129 status = decode_fsinfo(&xdr, fsinfo);
5130 return status;
5131 }
5132
5133 /*
5134 * DELEGRETURN request
5135 */
5136 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
5137 {
5138 struct xdr_stream xdr;
5139 struct compound_hdr hdr;
5140 int status;
5141
5142 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5143 status = decode_compound_hdr(&xdr, &hdr);
5144 if (status)
5145 goto out;
5146 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5147 if (status)
5148 goto out;
5149 status = decode_putfh(&xdr);
5150 if (status != 0)
5151 goto out;
5152 status = decode_delegreturn(&xdr);
5153 decode_getfattr(&xdr, res->fattr, res->server);
5154 out:
5155 return status;
5156 }
5157
5158 /*
5159 * FS_LOCATIONS request
5160 */
5161 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5162 struct nfs4_fs_locations_res *res)
5163 {
5164 struct xdr_stream xdr;
5165 struct compound_hdr hdr;
5166 int status;
5167
5168 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5169 status = decode_compound_hdr(&xdr, &hdr);
5170 if (status)
5171 goto out;
5172 status = decode_sequence(&xdr, &res->seq_res, req);
5173 if (status)
5174 goto out;
5175 if ((status = decode_putfh(&xdr)) != 0)
5176 goto out;
5177 if ((status = decode_lookup(&xdr)) != 0)
5178 goto out;
5179 xdr_enter_page(&xdr, PAGE_SIZE);
5180 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
5181 res->fs_locations->server);
5182 out:
5183 return status;
5184 }
5185
5186 #if defined(CONFIG_NFS_V4_1)
5187 /*
5188 * EXCHANGE_ID request
5189 */
5190 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5191 void *res)
5192 {
5193 struct xdr_stream xdr;
5194 struct compound_hdr hdr;
5195 int status;
5196
5197 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5198 status = decode_compound_hdr(&xdr, &hdr);
5199 if (!status)
5200 status = decode_exchange_id(&xdr, res);
5201 return status;
5202 }
5203
5204 /*
5205 * a CREATE_SESSION request
5206 */
5207 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5208 struct nfs41_create_session_res *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 status = decode_create_session(&xdr, res);
5218 return status;
5219 }
5220
5221 /*
5222 * a DESTROY_SESSION request
5223 */
5224 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5225 void *dummy)
5226 {
5227 struct xdr_stream xdr;
5228 struct compound_hdr hdr;
5229 int status;
5230
5231 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5232 status = decode_compound_hdr(&xdr, &hdr);
5233 if (!status)
5234 status = decode_destroy_session(&xdr, dummy);
5235 return status;
5236 }
5237
5238 /*
5239 * a SEQUENCE request
5240 */
5241 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5242 struct nfs4_sequence_res *res)
5243 {
5244 struct xdr_stream xdr;
5245 struct compound_hdr hdr;
5246 int status;
5247
5248 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5249 status = decode_compound_hdr(&xdr, &hdr);
5250 if (!status)
5251 status = decode_sequence(&xdr, res, rqstp);
5252 return status;
5253 }
5254
5255 /*
5256 * a GET_LEASE_TIME request
5257 */
5258 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5259 struct nfs4_get_lease_time_res *res)
5260 {
5261 struct xdr_stream xdr;
5262 struct compound_hdr hdr;
5263 int status;
5264
5265 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5266 status = decode_compound_hdr(&xdr, &hdr);
5267 if (!status)
5268 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
5269 if (!status)
5270 status = decode_putrootfh(&xdr);
5271 if (!status)
5272 status = decode_fsinfo(&xdr, res->lr_fsinfo);
5273 return status;
5274 }
5275 #endif /* CONFIG_NFS_V4_1 */
5276
5277 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
5278 {
5279 uint32_t bitmap[2] = {0};
5280 uint32_t len;
5281
5282 if (!*p++) {
5283 if (!*p)
5284 return ERR_PTR(-EAGAIN);
5285 entry->eof = 1;
5286 return ERR_PTR(-EBADCOOKIE);
5287 }
5288
5289 entry->prev_cookie = entry->cookie;
5290 p = xdr_decode_hyper(p, &entry->cookie);
5291 entry->len = ntohl(*p++);
5292 entry->name = (const char *) p;
5293 p += XDR_QUADLEN(entry->len);
5294
5295 /*
5296 * In case the server doesn't return an inode number,
5297 * we fake one here. (We don't use inode number 0,
5298 * since glibc seems to choke on it...)
5299 */
5300 entry->ino = 1;
5301
5302 len = ntohl(*p++); /* bitmap length */
5303 if (len-- > 0) {
5304 bitmap[0] = ntohl(*p++);
5305 if (len-- > 0) {
5306 bitmap[1] = ntohl(*p++);
5307 p += len;
5308 }
5309 }
5310 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
5311 if (len > 0) {
5312 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
5313 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
5314 /* Ignore the return value of rdattr_error for now */
5315 p++;
5316 len--;
5317 }
5318 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
5319 xdr_decode_hyper(p, &entry->ino);
5320 else if (bitmap[0] == FATTR4_WORD0_FILEID)
5321 xdr_decode_hyper(p, &entry->ino);
5322 p += len;
5323 }
5324
5325 entry->eof = !p[0] && p[1];
5326 return p;
5327 }
5328
5329 /*
5330 * We need to translate between nfs status return values and
5331 * the local errno values which may not be the same.
5332 */
5333 static struct {
5334 int stat;
5335 int errno;
5336 } nfs_errtbl[] = {
5337 { NFS4_OK, 0 },
5338 { NFS4ERR_PERM, -EPERM },
5339 { NFS4ERR_NOENT, -ENOENT },
5340 { NFS4ERR_IO, -errno_NFSERR_IO},
5341 { NFS4ERR_NXIO, -ENXIO },
5342 { NFS4ERR_ACCESS, -EACCES },
5343 { NFS4ERR_EXIST, -EEXIST },
5344 { NFS4ERR_XDEV, -EXDEV },
5345 { NFS4ERR_NOTDIR, -ENOTDIR },
5346 { NFS4ERR_ISDIR, -EISDIR },
5347 { NFS4ERR_INVAL, -EINVAL },
5348 { NFS4ERR_FBIG, -EFBIG },
5349 { NFS4ERR_NOSPC, -ENOSPC },
5350 { NFS4ERR_ROFS, -EROFS },
5351 { NFS4ERR_MLINK, -EMLINK },
5352 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
5353 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
5354 { NFS4ERR_DQUOT, -EDQUOT },
5355 { NFS4ERR_STALE, -ESTALE },
5356 { NFS4ERR_BADHANDLE, -EBADHANDLE },
5357 { NFS4ERR_BADOWNER, -EINVAL },
5358 { NFS4ERR_BADNAME, -EINVAL },
5359 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
5360 { NFS4ERR_NOTSUPP, -ENOTSUPP },
5361 { NFS4ERR_TOOSMALL, -ETOOSMALL },
5362 { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
5363 { NFS4ERR_BADTYPE, -EBADTYPE },
5364 { NFS4ERR_LOCKED, -EAGAIN },
5365 { NFS4ERR_RESOURCE, -EREMOTEIO },
5366 { NFS4ERR_SYMLINK, -ELOOP },
5367 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
5368 { NFS4ERR_DEADLOCK, -EDEADLK },
5369 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
5370 * to be handled by a
5371 * middle-layer.
5372 */
5373 { -1, -EIO }
5374 };
5375
5376 /*
5377 * Convert an NFS error code to a local one.
5378 * This one is used jointly by NFSv2 and NFSv3.
5379 */
5380 static int
5381 nfs4_stat_to_errno(int stat)
5382 {
5383 int i;
5384 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
5385 if (nfs_errtbl[i].stat == stat)
5386 return nfs_errtbl[i].errno;
5387 }
5388 if (stat <= 10000 || stat > 10100) {
5389 /* The server is looney tunes. */
5390 return -ESERVERFAULT;
5391 }
5392 /* If we cannot translate the error, the recovery routines should
5393 * handle it.
5394 * Note: remaining NFSv4 error codes have values > 10000, so should
5395 * not conflict with native Linux error codes.
5396 */
5397 return -stat;
5398 }
5399
5400 #define PROC(proc, argtype, restype) \
5401 [NFSPROC4_CLNT_##proc] = { \
5402 .p_proc = NFSPROC4_COMPOUND, \
5403 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
5404 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
5405 .p_arglen = NFS4_##argtype##_sz, \
5406 .p_replen = NFS4_##restype##_sz, \
5407 .p_statidx = NFSPROC4_CLNT_##proc, \
5408 .p_name = #proc, \
5409 }
5410
5411 struct rpc_procinfo nfs4_procedures[] = {
5412 PROC(READ, enc_read, dec_read),
5413 PROC(WRITE, enc_write, dec_write),
5414 PROC(COMMIT, enc_commit, dec_commit),
5415 PROC(OPEN, enc_open, dec_open),
5416 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
5417 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
5418 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
5419 PROC(CLOSE, enc_close, dec_close),
5420 PROC(SETATTR, enc_setattr, dec_setattr),
5421 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
5422 PROC(RENEW, enc_renew, dec_renew),
5423 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
5424 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
5425 PROC(LOCK, enc_lock, dec_lock),
5426 PROC(LOCKT, enc_lockt, dec_lockt),
5427 PROC(LOCKU, enc_locku, dec_locku),
5428 PROC(ACCESS, enc_access, dec_access),
5429 PROC(GETATTR, enc_getattr, dec_getattr),
5430 PROC(LOOKUP, enc_lookup, dec_lookup),
5431 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
5432 PROC(REMOVE, enc_remove, dec_remove),
5433 PROC(RENAME, enc_rename, dec_rename),
5434 PROC(LINK, enc_link, dec_link),
5435 PROC(SYMLINK, enc_symlink, dec_symlink),
5436 PROC(CREATE, enc_create, dec_create),
5437 PROC(PATHCONF, enc_pathconf, dec_pathconf),
5438 PROC(STATFS, enc_statfs, dec_statfs),
5439 PROC(READLINK, enc_readlink, dec_readlink),
5440 PROC(READDIR, enc_readdir, dec_readdir),
5441 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
5442 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
5443 PROC(GETACL, enc_getacl, dec_getacl),
5444 PROC(SETACL, enc_setacl, dec_setacl),
5445 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
5446 #if defined(CONFIG_NFS_V4_1)
5447 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
5448 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
5449 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
5450 PROC(SEQUENCE, enc_sequence, dec_sequence),
5451 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5452 #endif /* CONFIG_NFS_V4_1 */
5453 };
5454
5455 struct rpc_version nfs_version4 = {
5456 .number = 4,
5457 .nrprocs = ARRAY_SIZE(nfs4_procedures),
5458 .procs = nfs4_procedures
5459 };
5460
5461 /*
5462 * Local variables:
5463 * c-basic-offset: 8
5464 * End:
5465 */
CJK support for tty framebuffer vt