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RT-AC66 3.0.0.4.374.130 core
[tomato.git] / release / src-rt-6.x / linux / linux-2.6 / fs / nfs / nfs4xdr.c
blobc08738441f732216f7b785fa3805860475a40917
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 compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
76 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
77 #define op_encode_hdr_maxsz (1)
78 #define op_decode_hdr_maxsz (2)
79 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
80 (NFS4_FHSIZE >> 2))
81 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
82 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
83 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
84 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
85 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
86 ((3+NFS4_FHSIZE) >> 2))
87 #define nfs4_fattr_bitmap_maxsz 3
88 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
89 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
90 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
91 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
92 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
93 /* This is based on getfattr, which uses the most attributes: */
94 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
95 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
96 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
97 nfs4_fattr_value_maxsz)
98 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
99 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
100 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
101 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
102 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
103 #define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
104 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
105 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
106 #define decode_renew_maxsz (op_decode_hdr_maxsz)
107 #define encode_setclientid_maxsz \
108 (op_encode_hdr_maxsz + \
109 4 /*server->ip_addr*/ + \
110 1 /*Netid*/ + \
111 6 /*uaddr*/ + \
112 6 + (NFS4_VERIFIER_SIZE >> 2))
113 #define decode_setclientid_maxsz \
114 (op_decode_hdr_maxsz + \
115 2 + \
116 1024) /* large value for CLID_INUSE */
117 #define encode_setclientid_confirm_maxsz \
118 (op_encode_hdr_maxsz + \
119 3 + (NFS4_VERIFIER_SIZE >> 2))
120 #define decode_setclientid_confirm_maxsz \
121 (op_decode_hdr_maxsz)
122 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
123 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
124 #define encode_share_access_maxsz \
125 (2)
126 #define encode_createmode_maxsz (1 + nfs4_fattr_maxsz)
127 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
128 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
129 #define encode_open_maxsz (op_encode_hdr_maxsz + \
130 2 + encode_share_access_maxsz + 2 + \
131 open_owner_id_maxsz + \
132 encode_opentype_maxsz + \
133 encode_claim_null_maxsz)
134 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
135 #define decode_delegation_maxsz (1 + XDR_QUADLEN(NFS4_STATEID_SIZE) + 1 + \
136 decode_ace_maxsz)
137 #define decode_change_info_maxsz (5)
138 #define decode_open_maxsz (op_decode_hdr_maxsz + \
139 XDR_QUADLEN(NFS4_STATEID_SIZE) + \
140 decode_change_info_maxsz + 1 + \
141 nfs4_fattr_bitmap_maxsz + \
142 decode_delegation_maxsz)
143 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
144 nfs4_name_maxsz)
145 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
146 2 * nfs4_name_maxsz)
147 #define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
148 #define encode_link_maxsz (op_encode_hdr_maxsz + \
149 nfs4_name_maxsz)
150 #define decode_link_maxsz (op_decode_hdr_maxsz + 5)
151 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
152 1 + nfs4_name_maxsz + \
153 1 + \
154 nfs4_fattr_maxsz)
155 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
156 #define encode_create_maxsz (op_encode_hdr_maxsz + \
157 2 + nfs4_name_maxsz + \
158 nfs4_fattr_maxsz)
159 #define decode_create_maxsz (op_decode_hdr_maxsz + \
160 decode_change_info_maxsz + \
161 nfs4_fattr_bitmap_maxsz)
162 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
163 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
164 #define encode_fs_locations_maxsz \
165 (encode_getattr_maxsz)
166 #define decode_fs_locations_maxsz \
167 (0)
168 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
169 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
170 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
171 encode_putfh_maxsz + \
172 op_encode_hdr_maxsz + 7)
173 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
174 decode_putfh_maxsz + \
175 op_decode_hdr_maxsz + 2)
176 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
177 encode_putfh_maxsz + \
178 op_encode_hdr_maxsz)
179 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
180 decode_putfh_maxsz + \
181 op_decode_hdr_maxsz)
182 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
183 encode_putfh_maxsz + \
184 op_encode_hdr_maxsz + 9)
185 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
186 decode_putfh_maxsz + \
187 op_decode_hdr_maxsz + 2)
188 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
189 encode_putfh_maxsz + \
190 op_encode_hdr_maxsz + 8 + \
191 encode_getattr_maxsz)
192 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
193 decode_putfh_maxsz + \
194 op_decode_hdr_maxsz + 4 + \
195 decode_getattr_maxsz)
196 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
197 encode_putfh_maxsz + \
198 op_encode_hdr_maxsz + 3 + \
199 encode_getattr_maxsz)
200 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
201 decode_putfh_maxsz + \
202 op_decode_hdr_maxsz + 2 + \
203 decode_getattr_maxsz)
204 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
205 encode_putfh_maxsz + \
206 encode_savefh_maxsz + \
207 encode_open_maxsz + \
208 encode_getfh_maxsz + \
209 encode_getattr_maxsz + \
210 encode_restorefh_maxsz + \
211 encode_getattr_maxsz)
212 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
213 decode_putfh_maxsz + \
214 decode_savefh_maxsz + \
215 decode_open_maxsz + \
216 decode_getfh_maxsz + \
217 decode_getattr_maxsz + \
218 decode_restorefh_maxsz + \
219 decode_getattr_maxsz)
220 #define NFS4_enc_open_confirm_sz \
221 (compound_encode_hdr_maxsz + \
222 encode_putfh_maxsz + \
223 op_encode_hdr_maxsz + 5)
224 #define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
225 decode_putfh_maxsz + \
226 op_decode_hdr_maxsz + 4)
227 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
228 encode_putfh_maxsz + \
229 encode_open_maxsz + \
230 encode_getattr_maxsz)
231 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
232 decode_putfh_maxsz + \
233 decode_open_maxsz + \
234 decode_getattr_maxsz)
235 #define NFS4_enc_open_downgrade_sz \
236 (compound_encode_hdr_maxsz + \
237 encode_putfh_maxsz + \
238 op_encode_hdr_maxsz + 7 + \
239 encode_getattr_maxsz)
240 #define NFS4_dec_open_downgrade_sz \
241 (compound_decode_hdr_maxsz + \
242 decode_putfh_maxsz + \
243 op_decode_hdr_maxsz + 4 + \
244 decode_getattr_maxsz)
245 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
246 encode_putfh_maxsz + \
247 op_encode_hdr_maxsz + 5 + \
248 encode_getattr_maxsz)
249 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
250 decode_putfh_maxsz + \
251 op_decode_hdr_maxsz + 4 + \
252 decode_getattr_maxsz)
253 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
254 encode_putfh_maxsz + \
255 op_encode_hdr_maxsz + 4 + \
256 nfs4_fattr_maxsz + \
257 encode_getattr_maxsz)
258 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
259 decode_putfh_maxsz + \
260 op_decode_hdr_maxsz + 3 + \
261 nfs4_fattr_maxsz)
262 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
263 encode_putfh_maxsz + \
264 encode_fsinfo_maxsz)
265 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
266 decode_putfh_maxsz + \
267 decode_fsinfo_maxsz)
268 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
269 encode_renew_maxsz)
270 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
271 decode_renew_maxsz)
272 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
273 encode_setclientid_maxsz)
274 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
275 decode_setclientid_maxsz)
276 #define NFS4_enc_setclientid_confirm_sz \
277 (compound_encode_hdr_maxsz + \
278 encode_setclientid_confirm_maxsz + \
279 encode_putrootfh_maxsz + \
280 encode_fsinfo_maxsz)
281 #define NFS4_dec_setclientid_confirm_sz \
282 (compound_decode_hdr_maxsz + \
283 decode_setclientid_confirm_maxsz + \
284 decode_putrootfh_maxsz + \
285 decode_fsinfo_maxsz)
286 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
287 encode_putfh_maxsz + \
288 encode_getattr_maxsz + \
289 op_encode_hdr_maxsz + \
290 1 + 1 + 2 + 2 + \
291 1 + 4 + 1 + 2 + \
292 lock_owner_id_maxsz)
293 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
294 decode_putfh_maxsz + \
295 decode_getattr_maxsz + \
296 op_decode_hdr_maxsz + \
297 2 + 2 + 1 + 2 + \
298 lock_owner_id_maxsz)
299 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
300 encode_putfh_maxsz + \
301 encode_getattr_maxsz + \
302 op_encode_hdr_maxsz + \
303 1 + 2 + 2 + 2 + \
304 lock_owner_id_maxsz)
305 #define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
306 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
307 encode_putfh_maxsz + \
308 encode_getattr_maxsz + \
309 op_encode_hdr_maxsz + \
310 1 + 1 + 4 + 2 + 2)
311 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
312 decode_putfh_maxsz + \
313 decode_getattr_maxsz + \
314 op_decode_hdr_maxsz + 4)
315 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
316 encode_putfh_maxsz + \
317 op_encode_hdr_maxsz + 1)
318 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
319 decode_putfh_maxsz + \
320 op_decode_hdr_maxsz + 2)
321 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
322 encode_putfh_maxsz + \
323 encode_getattr_maxsz)
324 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
325 decode_putfh_maxsz + \
326 decode_getattr_maxsz)
327 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
328 encode_putfh_maxsz + \
329 encode_lookup_maxsz + \
330 encode_getattr_maxsz + \
331 encode_getfh_maxsz)
332 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
333 decode_putfh_maxsz + \
334 decode_lookup_maxsz + \
335 decode_getattr_maxsz + \
336 decode_getfh_maxsz)
337 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
338 encode_putrootfh_maxsz + \
339 encode_getattr_maxsz + \
340 encode_getfh_maxsz)
341 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
342 decode_putrootfh_maxsz + \
343 decode_getattr_maxsz + \
344 decode_getfh_maxsz)
345 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
346 encode_putfh_maxsz + \
347 encode_remove_maxsz + \
348 encode_getattr_maxsz)
349 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
350 decode_putfh_maxsz + \
351 op_decode_hdr_maxsz + 5 + \
352 decode_getattr_maxsz)
353 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
354 encode_putfh_maxsz + \
355 encode_savefh_maxsz + \
356 encode_putfh_maxsz + \
357 encode_rename_maxsz + \
358 encode_getattr_maxsz + \
359 encode_restorefh_maxsz + \
360 encode_getattr_maxsz)
361 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
362 decode_putfh_maxsz + \
363 decode_savefh_maxsz + \
364 decode_putfh_maxsz + \
365 decode_rename_maxsz + \
366 decode_getattr_maxsz + \
367 decode_restorefh_maxsz + \
368 decode_getattr_maxsz)
369 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
370 encode_putfh_maxsz + \
371 encode_savefh_maxsz + \
372 encode_putfh_maxsz + \
373 encode_link_maxsz + \
374 decode_getattr_maxsz + \
375 encode_restorefh_maxsz + \
376 decode_getattr_maxsz)
377 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
378 decode_putfh_maxsz + \
379 decode_savefh_maxsz + \
380 decode_putfh_maxsz + \
381 decode_link_maxsz + \
382 decode_getattr_maxsz + \
383 decode_restorefh_maxsz + \
384 decode_getattr_maxsz)
385 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
386 encode_putfh_maxsz + \
387 encode_symlink_maxsz + \
388 encode_getattr_maxsz + \
389 encode_getfh_maxsz)
390 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
391 decode_putfh_maxsz + \
392 decode_symlink_maxsz + \
393 decode_getattr_maxsz + \
394 decode_getfh_maxsz)
395 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
396 encode_putfh_maxsz + \
397 encode_savefh_maxsz + \
398 encode_create_maxsz + \
399 encode_getfh_maxsz + \
400 encode_getattr_maxsz + \
401 encode_restorefh_maxsz + \
402 encode_getattr_maxsz)
403 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
404 decode_putfh_maxsz + \
405 decode_savefh_maxsz + \
406 decode_create_maxsz + \
407 decode_getfh_maxsz + \
408 decode_getattr_maxsz + \
409 decode_restorefh_maxsz + \
410 decode_getattr_maxsz)
411 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
412 encode_putfh_maxsz + \
413 encode_getattr_maxsz)
414 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
415 decode_putfh_maxsz + \
416 decode_getattr_maxsz)
417 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
418 encode_putfh_maxsz + \
419 encode_getattr_maxsz)
420 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
421 decode_putfh_maxsz + \
422 op_decode_hdr_maxsz + 12)
423 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
424 encode_putfh_maxsz + \
425 encode_getattr_maxsz)
426 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
427 decode_putfh_maxsz + \
428 decode_getattr_maxsz)
429 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
430 encode_putfh_maxsz + \
431 encode_delegreturn_maxsz + \
432 encode_getattr_maxsz)
433 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
434 decode_delegreturn_maxsz + \
435 decode_getattr_maxsz)
436 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
437 encode_putfh_maxsz + \
438 encode_getattr_maxsz)
439 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
440 decode_putfh_maxsz + \
441 op_decode_hdr_maxsz + \
442 nfs4_fattr_bitmap_maxsz + 1)
443 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
444 encode_putfh_maxsz + \
445 op_encode_hdr_maxsz + 4 + \
446 nfs4_fattr_bitmap_maxsz + 1)
447 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
448 decode_putfh_maxsz + \
449 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
450 #define NFS4_enc_fs_locations_sz \
451 (compound_encode_hdr_maxsz + \
452 encode_putfh_maxsz + \
453 encode_lookup_maxsz + \
454 encode_fs_locations_maxsz)
455 #define NFS4_dec_fs_locations_sz \
456 (compound_decode_hdr_maxsz + \
457 decode_putfh_maxsz + \
458 decode_lookup_maxsz + \
459 decode_fs_locations_maxsz)
460
461 static struct {
462 unsigned int mode;
463 unsigned int nfs2type;
464 } nfs_type2fmt[] = {
465 { 0, NFNON },
466 { S_IFREG, NFREG },
467 { S_IFDIR, NFDIR },
468 { S_IFBLK, NFBLK },
469 { S_IFCHR, NFCHR },
470 { S_IFLNK, NFLNK },
471 { S_IFSOCK, NFSOCK },
472 { S_IFIFO, NFFIFO },
473 { 0, NFNON },
474 { 0, NFNON },
475 };
476
477 struct compound_hdr {
478 int32_t status;
479 uint32_t nops;
480 uint32_t taglen;
481 char * tag;
482 };
483
484 /*
485 * START OF "GENERIC" ENCODE ROUTINES.
486 * These may look a little ugly since they are imported from a "generic"
487 * set of XDR encode/decode routines which are intended to be shared by
488 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
489 *
490 * If the pain of reading these is too great, it should be a straightforward
491 * task to translate them into Linux-specific versions which are more
492 * consistent with the style used in NFSv2/v3...
493 */
494 #define WRITE32(n) *p++ = htonl(n)
495 #define WRITE64(n) do { \
496 *p++ = htonl((uint32_t)((n) >> 32)); \
497 *p++ = htonl((uint32_t)(n)); \
498 } while (0)
499 #define WRITEMEM(ptr,nbytes) do { \
500 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
501 } while (0)
502
503 #define RESERVE_SPACE(nbytes) do { \
504 p = xdr_reserve_space(xdr, nbytes); \
505 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
506 BUG_ON(!p); \
507 } while (0)
508
509 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
510 {
511 __be32 *p;
512
513 p = xdr_reserve_space(xdr, 4 + len);
514 BUG_ON(p == NULL);
515 xdr_encode_opaque(p, str, len);
516 }
517
518 static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
519 {
520 __be32 *p;
521
522 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
523 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
524 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
525 WRITE32(hdr->taglen);
526 WRITEMEM(hdr->tag, hdr->taglen);
527 WRITE32(NFS4_MINOR_VERSION);
528 WRITE32(hdr->nops);
529 return 0;
530 }
531
532 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
533 {
534 __be32 *p;
535
536 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
537 BUG_ON(p == NULL);
538 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
539 }
540
541 static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
542 {
543 char owner_name[IDMAP_NAMESZ];
544 char owner_group[IDMAP_NAMESZ];
545 int owner_namelen = 0;
546 int owner_grouplen = 0;
547 __be32 *p;
548 __be32 *q;
549 int len;
550 uint32_t bmval0 = 0;
551 uint32_t bmval1 = 0;
552 int status;
553
554 /*
555 * We reserve enough space to write the entire attribute buffer at once.
556 * In the worst-case, this would be
557 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
558 * = 36 bytes, plus any contribution from variable-length fields
559 * such as owner/group.
560 */
561 len = 16;
562
563 /* Sigh */
564 if (iap->ia_valid & ATTR_SIZE)
565 len += 8;
566 if (iap->ia_valid & ATTR_MODE)
567 len += 4;
568 if (iap->ia_valid & ATTR_UID) {
569 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
570 if (owner_namelen < 0) {
571 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
572 iap->ia_uid);
573 /* XXX */
574 strcpy(owner_name, "nobody");
575 owner_namelen = sizeof("nobody") - 1;
576 /* goto out; */
577 }
578 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
579 }
580 if (iap->ia_valid & ATTR_GID) {
581 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
582 if (owner_grouplen < 0) {
583 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
584 iap->ia_gid);
585 strcpy(owner_group, "nobody");
586 owner_grouplen = sizeof("nobody") - 1;
587 /* goto out; */
588 }
589 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
590 }
591 if (iap->ia_valid & ATTR_ATIME_SET)
592 len += 16;
593 else if (iap->ia_valid & ATTR_ATIME)
594 len += 4;
595 if (iap->ia_valid & ATTR_MTIME_SET)
596 len += 16;
597 else if (iap->ia_valid & ATTR_MTIME)
598 len += 4;
599 RESERVE_SPACE(len);
600
601 /*
602 * We write the bitmap length now, but leave the bitmap and the attribute
603 * buffer length to be backfilled at the end of this routine.
604 */
605 WRITE32(2);
606 q = p;
607 p += 3;
608
609 if (iap->ia_valid & ATTR_SIZE) {
610 bmval0 |= FATTR4_WORD0_SIZE;
611 WRITE64(iap->ia_size);
612 }
613 if (iap->ia_valid & ATTR_MODE) {
614 bmval1 |= FATTR4_WORD1_MODE;
615 WRITE32(iap->ia_mode & S_IALLUGO);
616 }
617 if (iap->ia_valid & ATTR_UID) {
618 bmval1 |= FATTR4_WORD1_OWNER;
619 WRITE32(owner_namelen);
620 WRITEMEM(owner_name, owner_namelen);
621 }
622 if (iap->ia_valid & ATTR_GID) {
623 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
624 WRITE32(owner_grouplen);
625 WRITEMEM(owner_group, owner_grouplen);
626 }
627 if (iap->ia_valid & ATTR_ATIME_SET) {
628 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
629 WRITE32(NFS4_SET_TO_CLIENT_TIME);
630 WRITE32(0);
631 WRITE32(iap->ia_mtime.tv_sec);
632 WRITE32(iap->ia_mtime.tv_nsec);
633 }
634 else if (iap->ia_valid & ATTR_ATIME) {
635 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
636 WRITE32(NFS4_SET_TO_SERVER_TIME);
637 }
638 if (iap->ia_valid & ATTR_MTIME_SET) {
639 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
640 WRITE32(NFS4_SET_TO_CLIENT_TIME);
641 WRITE32(0);
642 WRITE32(iap->ia_mtime.tv_sec);
643 WRITE32(iap->ia_mtime.tv_nsec);
644 }
645 else if (iap->ia_valid & ATTR_MTIME) {
646 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
647 WRITE32(NFS4_SET_TO_SERVER_TIME);
648 }
649
650 /*
651 * Now we backfill the bitmap and the attribute buffer length.
652 */
653 if (len != ((char *)p - (char *)q) + 4) {
654 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
655 len, ((char *)p - (char *)q) + 4);
656 BUG();
657 }
658 len = (char *)p - (char *)q - 12;
659 *q++ = htonl(bmval0);
660 *q++ = htonl(bmval1);
661 *q++ = htonl(len);
662
663 status = 0;
664 /* out: */
665 return status;
666 }
667
668 static int encode_access(struct xdr_stream *xdr, u32 access)
669 {
670 __be32 *p;
671
672 RESERVE_SPACE(8);
673 WRITE32(OP_ACCESS);
674 WRITE32(access);
675
676 return 0;
677 }
678
679 static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
680 {
681 __be32 *p;
682
683 RESERVE_SPACE(8+NFS4_STATEID_SIZE);
684 WRITE32(OP_CLOSE);
685 WRITE32(arg->seqid->sequence->counter);
686 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
687
688 return 0;
689 }
690
691 static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
692 {
693 __be32 *p;
694
695 RESERVE_SPACE(16);
696 WRITE32(OP_COMMIT);
697 WRITE64(args->offset);
698 WRITE32(args->count);
699
700 return 0;
701 }
702
703 static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
704 {
705 __be32 *p;
706
707 RESERVE_SPACE(8);
708 WRITE32(OP_CREATE);
709 WRITE32(create->ftype);
710
711 switch (create->ftype) {
712 case NF4LNK:
713 RESERVE_SPACE(4);
714 WRITE32(create->u.symlink.len);
715 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
716 break;
717
718 case NF4BLK: case NF4CHR:
719 RESERVE_SPACE(8);
720 WRITE32(create->u.device.specdata1);
721 WRITE32(create->u.device.specdata2);
722 break;
723
724 default:
725 break;
726 }
727
728 RESERVE_SPACE(4 + create->name->len);
729 WRITE32(create->name->len);
730 WRITEMEM(create->name->name, create->name->len);
731
732 return encode_attrs(xdr, create->attrs, create->server);
733 }
734
735 static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
736 {
737 __be32 *p;
738
739 RESERVE_SPACE(12);
740 WRITE32(OP_GETATTR);
741 WRITE32(1);
742 WRITE32(bitmap);
743 return 0;
744 }
745
746 static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
747 {
748 __be32 *p;
749
750 RESERVE_SPACE(16);
751 WRITE32(OP_GETATTR);
752 WRITE32(2);
753 WRITE32(bm0);
754 WRITE32(bm1);
755 return 0;
756 }
757
758 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
759 {
760 return encode_getattr_two(xdr,
761 bitmask[0] & nfs4_fattr_bitmap[0],
762 bitmask[1] & nfs4_fattr_bitmap[1]);
763 }
764
765 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
766 {
767 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
768 bitmask[1] & nfs4_fsinfo_bitmap[1]);
769 }
770
771 static int encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask)
772 {
773 return encode_getattr_two(xdr,
774 bitmask[0] & nfs4_fs_locations_bitmap[0],
775 bitmask[1] & nfs4_fs_locations_bitmap[1]);
776 }
777
778 static int encode_getfh(struct xdr_stream *xdr)
779 {
780 __be32 *p;
781
782 RESERVE_SPACE(4);
783 WRITE32(OP_GETFH);
784
785 return 0;
786 }
787
788 static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
789 {
790 __be32 *p;
791
792 RESERVE_SPACE(8 + name->len);
793 WRITE32(OP_LINK);
794 WRITE32(name->len);
795 WRITEMEM(name->name, name->len);
796
797 return 0;
798 }
799
800 static inline int nfs4_lock_type(struct file_lock *fl, int block)
801 {
802 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
803 return block ? NFS4_READW_LT : NFS4_READ_LT;
804 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
805 }
806
807 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
808 {
809 if (fl->fl_end == OFFSET_MAX)
810 return ~(uint64_t)0;
811 return fl->fl_end - fl->fl_start + 1;
812 }
813
814 /*
815 * opcode,type,reclaim,offset,length,new_lock_owner = 32
816 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
817 */
818 static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
819 {
820 __be32 *p;
821
822 RESERVE_SPACE(32);
823 WRITE32(OP_LOCK);
824 WRITE32(nfs4_lock_type(args->fl, args->block));
825 WRITE32(args->reclaim);
826 WRITE64(args->fl->fl_start);
827 WRITE64(nfs4_lock_length(args->fl));
828 WRITE32(args->new_lock_owner);
829 if (args->new_lock_owner){
830 RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
831 WRITE32(args->open_seqid->sequence->counter);
832 WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
833 WRITE32(args->lock_seqid->sequence->counter);
834 WRITE64(args->lock_owner.clientid);
835 WRITE32(16);
836 WRITEMEM("lock id:", 8);
837 WRITE64(args->lock_owner.id);
838 }
839 else {
840 RESERVE_SPACE(NFS4_STATEID_SIZE+4);
841 WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
842 WRITE32(args->lock_seqid->sequence->counter);
843 }
844
845 return 0;
846 }
847
848 static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
849 {
850 __be32 *p;
851
852 RESERVE_SPACE(52);
853 WRITE32(OP_LOCKT);
854 WRITE32(nfs4_lock_type(args->fl, 0));
855 WRITE64(args->fl->fl_start);
856 WRITE64(nfs4_lock_length(args->fl));
857 WRITE64(args->lock_owner.clientid);
858 WRITE32(16);
859 WRITEMEM("lock id:", 8);
860 WRITE64(args->lock_owner.id);
861
862 return 0;
863 }
864
865 static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
866 {
867 __be32 *p;
868
869 RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
870 WRITE32(OP_LOCKU);
871 WRITE32(nfs4_lock_type(args->fl, 0));
872 WRITE32(args->seqid->sequence->counter);
873 WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
874 WRITE64(args->fl->fl_start);
875 WRITE64(nfs4_lock_length(args->fl));
876
877 return 0;
878 }
879
880 static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
881 {
882 int len = name->len;
883 __be32 *p;
884
885 RESERVE_SPACE(8 + len);
886 WRITE32(OP_LOOKUP);
887 WRITE32(len);
888 WRITEMEM(name->name, len);
889
890 return 0;
891 }
892
893 static void encode_share_access(struct xdr_stream *xdr, int open_flags)
894 {
895 __be32 *p;
896
897 RESERVE_SPACE(8);
898 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
899 case FMODE_READ:
900 WRITE32(NFS4_SHARE_ACCESS_READ);
901 break;
902 case FMODE_WRITE:
903 WRITE32(NFS4_SHARE_ACCESS_WRITE);
904 break;
905 case FMODE_READ|FMODE_WRITE:
906 WRITE32(NFS4_SHARE_ACCESS_BOTH);
907 break;
908 default:
909 BUG();
910 }
911 WRITE32(0); /* for linux, share_deny = 0 always */
912 }
913
914 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
915 {
916 __be32 *p;
917 /*
918 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
919 * owner 4 = 32
920 */
921 RESERVE_SPACE(8);
922 WRITE32(OP_OPEN);
923 WRITE32(arg->seqid->sequence->counter);
924 encode_share_access(xdr, arg->open_flags);
925 RESERVE_SPACE(28);
926 WRITE64(arg->clientid);
927 WRITE32(16);
928 WRITEMEM("open id:", 8);
929 WRITE64(arg->id);
930 }
931
932 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
933 {
934 __be32 *p;
935
936 RESERVE_SPACE(4);
937 switch(arg->open_flags & O_EXCL) {
938 case 0:
939 WRITE32(NFS4_CREATE_UNCHECKED);
940 encode_attrs(xdr, arg->u.attrs, arg->server);
941 break;
942 default:
943 WRITE32(NFS4_CREATE_EXCLUSIVE);
944 encode_nfs4_verifier(xdr, &arg->u.verifier);
945 }
946 }
947
948 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
949 {
950 __be32 *p;
951
952 RESERVE_SPACE(4);
953 switch (arg->open_flags & O_CREAT) {
954 case 0:
955 WRITE32(NFS4_OPEN_NOCREATE);
956 break;
957 default:
958 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
959 WRITE32(NFS4_OPEN_CREATE);
960 encode_createmode(xdr, arg);
961 }
962 }
963
964 static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
965 {
966 __be32 *p;
967
968 RESERVE_SPACE(4);
969 switch (delegation_type) {
970 case 0:
971 WRITE32(NFS4_OPEN_DELEGATE_NONE);
972 break;
973 case FMODE_READ:
974 WRITE32(NFS4_OPEN_DELEGATE_READ);
975 break;
976 case FMODE_WRITE|FMODE_READ:
977 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
978 break;
979 default:
980 BUG();
981 }
982 }
983
984 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
985 {
986 __be32 *p;
987
988 RESERVE_SPACE(4);
989 WRITE32(NFS4_OPEN_CLAIM_NULL);
990 encode_string(xdr, name->len, name->name);
991 }
992
993 static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
994 {
995 __be32 *p;
996
997 RESERVE_SPACE(4);
998 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
999 encode_delegation_type(xdr, type);
1000 }
1001
1002 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1003 {
1004 __be32 *p;
1005
1006 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1007 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1008 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1009 encode_string(xdr, name->len, name->name);
1010 }
1011
1012 static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1013 {
1014 encode_openhdr(xdr, arg);
1015 encode_opentype(xdr, arg);
1016 switch (arg->claim) {
1017 case NFS4_OPEN_CLAIM_NULL:
1018 encode_claim_null(xdr, arg->name);
1019 break;
1020 case NFS4_OPEN_CLAIM_PREVIOUS:
1021 encode_claim_previous(xdr, arg->u.delegation_type);
1022 break;
1023 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1024 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1025 break;
1026 default:
1027 BUG();
1028 }
1029 return 0;
1030 }
1031
1032 static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
1033 {
1034 __be32 *p;
1035
1036 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1037 WRITE32(OP_OPEN_CONFIRM);
1038 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1039 WRITE32(arg->seqid->sequence->counter);
1040
1041 return 0;
1042 }
1043
1044 static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
1045 {
1046 __be32 *p;
1047
1048 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1049 WRITE32(OP_OPEN_DOWNGRADE);
1050 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1051 WRITE32(arg->seqid->sequence->counter);
1052 encode_share_access(xdr, arg->open_flags);
1053 return 0;
1054 }
1055
1056 static int
1057 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
1058 {
1059 int len = fh->size;
1060 __be32 *p;
1061
1062 RESERVE_SPACE(8 + len);
1063 WRITE32(OP_PUTFH);
1064 WRITE32(len);
1065 WRITEMEM(fh->data, len);
1066
1067 return 0;
1068 }
1069
1070 static int encode_putrootfh(struct xdr_stream *xdr)
1071 {
1072 __be32 *p;
1073
1074 RESERVE_SPACE(4);
1075 WRITE32(OP_PUTROOTFH);
1076
1077 return 0;
1078 }
1079
1080 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1081 {
1082 nfs4_stateid stateid;
1083 __be32 *p;
1084
1085 RESERVE_SPACE(NFS4_STATEID_SIZE);
1086 if (ctx->state != NULL) {
1087 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1088 WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
1089 } else
1090 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1091 }
1092
1093 static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1094 {
1095 __be32 *p;
1096
1097 RESERVE_SPACE(4);
1098 WRITE32(OP_READ);
1099
1100 encode_stateid(xdr, args->context);
1101
1102 RESERVE_SPACE(12);
1103 WRITE64(args->offset);
1104 WRITE32(args->count);
1105
1106 return 0;
1107 }
1108
1109 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1110 {
1111 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1112 uint32_t attrs[2] = {
1113 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1114 FATTR4_WORD1_MOUNTED_ON_FILEID,
1115 };
1116 int replen;
1117 __be32 *p;
1118
1119 RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
1120 WRITE32(OP_READDIR);
1121 WRITE64(readdir->cookie);
1122 WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
1123 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1124 WRITE32(readdir->count);
1125 WRITE32(2);
1126 /* Switch to mounted_on_fileid if the server supports it */
1127 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1128 attrs[0] &= ~FATTR4_WORD0_FILEID;
1129 else
1130 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1131 WRITE32(attrs[0] & readdir->bitmask[0]);
1132 WRITE32(attrs[1] & readdir->bitmask[1]);
1133 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1134 __FUNCTION__,
1135 (unsigned long long)readdir->cookie,
1136 ((u32 *)readdir->verifier.data)[0],
1137 ((u32 *)readdir->verifier.data)[1],
1138 attrs[0] & readdir->bitmask[0],
1139 attrs[1] & readdir->bitmask[1]);
1140
1141 /* set up reply kvec
1142 * toplevel_status + taglen + rescount + OP_PUTFH + status
1143 * + OP_READDIR + status + verifer(2) = 9
1144 */
1145 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1146 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1147 readdir->pgbase, readdir->count);
1148 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1149 __FUNCTION__, replen, readdir->pages,
1150 readdir->pgbase, readdir->count);
1151
1152 return 0;
1153 }
1154
1155 static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1156 {
1157 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1158 unsigned int replen;
1159 __be32 *p;
1160
1161 RESERVE_SPACE(4);
1162 WRITE32(OP_READLINK);
1163
1164 /* set up reply kvec
1165 * toplevel_status + taglen + rescount + OP_PUTFH + status
1166 * + OP_READLINK + status + string length = 8
1167 */
1168 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1169 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1170 readlink->pgbase, readlink->pglen);
1171
1172 return 0;
1173 }
1174
1175 static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1176 {
1177 __be32 *p;
1178
1179 RESERVE_SPACE(8 + name->len);
1180 WRITE32(OP_REMOVE);
1181 WRITE32(name->len);
1182 WRITEMEM(name->name, name->len);
1183
1184 return 0;
1185 }
1186
1187 static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1188 {
1189 __be32 *p;
1190
1191 RESERVE_SPACE(8 + oldname->len);
1192 WRITE32(OP_RENAME);
1193 WRITE32(oldname->len);
1194 WRITEMEM(oldname->name, oldname->len);
1195
1196 RESERVE_SPACE(4 + newname->len);
1197 WRITE32(newname->len);
1198 WRITEMEM(newname->name, newname->len);
1199
1200 return 0;
1201 }
1202
1203 static int encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid)
1204 {
1205 __be32 *p;
1206
1207 RESERVE_SPACE(12);
1208 WRITE32(OP_RENEW);
1209 WRITE64(client_stateid->cl_clientid);
1210
1211 return 0;
1212 }
1213
1214 static int
1215 encode_restorefh(struct xdr_stream *xdr)
1216 {
1217 __be32 *p;
1218
1219 RESERVE_SPACE(4);
1220 WRITE32(OP_RESTOREFH);
1221
1222 return 0;
1223 }
1224
1225 static int
1226 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1227 {
1228 __be32 *p;
1229
1230 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1231 WRITE32(OP_SETATTR);
1232 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1233 RESERVE_SPACE(2*4);
1234 WRITE32(1);
1235 WRITE32(FATTR4_WORD0_ACL);
1236 if (arg->acl_len % 4)
1237 return -EINVAL;
1238 RESERVE_SPACE(4);
1239 WRITE32(arg->acl_len);
1240 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1241 return 0;
1242 }
1243
1244 static int
1245 encode_savefh(struct xdr_stream *xdr)
1246 {
1247 __be32 *p;
1248
1249 RESERVE_SPACE(4);
1250 WRITE32(OP_SAVEFH);
1251
1252 return 0;
1253 }
1254
1255 static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1256 {
1257 int status;
1258 __be32 *p;
1259
1260 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1261 WRITE32(OP_SETATTR);
1262 WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
1263
1264 if ((status = encode_attrs(xdr, arg->iap, server)))
1265 return status;
1266
1267 return 0;
1268 }
1269
1270 static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1271 {
1272 __be32 *p;
1273
1274 RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
1275 WRITE32(OP_SETCLIENTID);
1276 WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1277
1278 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1279 RESERVE_SPACE(4);
1280 WRITE32(setclientid->sc_prog);
1281 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1282 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1283 RESERVE_SPACE(4);
1284 WRITE32(setclientid->sc_cb_ident);
1285
1286 return 0;
1287 }
1288
1289 static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state)
1290 {
1291 __be32 *p;
1292
1293 RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
1294 WRITE32(OP_SETCLIENTID_CONFIRM);
1295 WRITE64(client_state->cl_clientid);
1296 WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1297
1298 return 0;
1299 }
1300
1301 static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1302 {
1303 __be32 *p;
1304
1305 RESERVE_SPACE(4);
1306 WRITE32(OP_WRITE);
1307
1308 encode_stateid(xdr, args->context);
1309
1310 RESERVE_SPACE(16);
1311 WRITE64(args->offset);
1312 WRITE32(args->stable);
1313 WRITE32(args->count);
1314
1315 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1316
1317 return 0;
1318 }
1319
1320 static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1321 {
1322 __be32 *p;
1323
1324 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1325
1326 WRITE32(OP_DELEGRETURN);
1327 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1328 return 0;
1329
1330 }
1331 /*
1332 * END OF "GENERIC" ENCODE ROUTINES.
1333 */
1334
1335 /*
1336 * Encode an ACCESS request
1337 */
1338 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1339 {
1340 struct xdr_stream xdr;
1341 struct compound_hdr hdr = {
1342 .nops = 2,
1343 };
1344 int status;
1345
1346 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1347 encode_compound_hdr(&xdr, &hdr);
1348 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1349 status = encode_access(&xdr, args->access);
1350 return status;
1351 }
1352
1353 /*
1354 * Encode LOOKUP request
1355 */
1356 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1357 {
1358 struct xdr_stream xdr;
1359 struct compound_hdr hdr = {
1360 .nops = 4,
1361 };
1362 int status;
1363
1364 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1365 encode_compound_hdr(&xdr, &hdr);
1366 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1367 goto out;
1368 if ((status = encode_lookup(&xdr, args->name)) != 0)
1369 goto out;
1370 if ((status = encode_getfh(&xdr)) != 0)
1371 goto out;
1372 status = encode_getfattr(&xdr, args->bitmask);
1373 out:
1374 return status;
1375 }
1376
1377 /*
1378 * Encode LOOKUP_ROOT request
1379 */
1380 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1381 {
1382 struct xdr_stream xdr;
1383 struct compound_hdr hdr = {
1384 .nops = 3,
1385 };
1386 int status;
1387
1388 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1389 encode_compound_hdr(&xdr, &hdr);
1390 if ((status = encode_putrootfh(&xdr)) != 0)
1391 goto out;
1392 if ((status = encode_getfh(&xdr)) == 0)
1393 status = encode_getfattr(&xdr, args->bitmask);
1394 out:
1395 return status;
1396 }
1397
1398 /*
1399 * Encode REMOVE request
1400 */
1401 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs4_remove_arg *args)
1402 {
1403 struct xdr_stream xdr;
1404 struct compound_hdr hdr = {
1405 .nops = 3,
1406 };
1407 int status;
1408
1409 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1410 encode_compound_hdr(&xdr, &hdr);
1411 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1412 goto out;
1413 if ((status = encode_remove(&xdr, args->name)) != 0)
1414 goto out;
1415 status = encode_getfattr(&xdr, args->bitmask);
1416 out:
1417 return status;
1418 }
1419
1420 /*
1421 * Encode RENAME request
1422 */
1423 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1424 {
1425 struct xdr_stream xdr;
1426 struct compound_hdr hdr = {
1427 .nops = 7,
1428 };
1429 int status;
1430
1431 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1432 encode_compound_hdr(&xdr, &hdr);
1433 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1434 goto out;
1435 if ((status = encode_savefh(&xdr)) != 0)
1436 goto out;
1437 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1438 goto out;
1439 if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
1440 goto out;
1441 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1442 goto out;
1443 if ((status = encode_restorefh(&xdr)) != 0)
1444 goto out;
1445 status = encode_getfattr(&xdr, args->bitmask);
1446 out:
1447 return status;
1448 }
1449
1450 /*
1451 * Encode LINK request
1452 */
1453 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1454 {
1455 struct xdr_stream xdr;
1456 struct compound_hdr hdr = {
1457 .nops = 7,
1458 };
1459 int status;
1460
1461 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1462 encode_compound_hdr(&xdr, &hdr);
1463 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1464 goto out;
1465 if ((status = encode_savefh(&xdr)) != 0)
1466 goto out;
1467 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1468 goto out;
1469 if ((status = encode_link(&xdr, args->name)) != 0)
1470 goto out;
1471 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1472 goto out;
1473 if ((status = encode_restorefh(&xdr)) != 0)
1474 goto out;
1475 status = encode_getfattr(&xdr, args->bitmask);
1476 out:
1477 return status;
1478 }
1479
1480 /*
1481 * Encode CREATE request
1482 */
1483 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1484 {
1485 struct xdr_stream xdr;
1486 struct compound_hdr hdr = {
1487 .nops = 7,
1488 };
1489 int status;
1490
1491 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1492 encode_compound_hdr(&xdr, &hdr);
1493 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1494 goto out;
1495 if ((status = encode_savefh(&xdr)) != 0)
1496 goto out;
1497 if ((status = encode_create(&xdr, args)) != 0)
1498 goto out;
1499 if ((status = encode_getfh(&xdr)) != 0)
1500 goto out;
1501 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1502 goto out;
1503 if ((status = encode_restorefh(&xdr)) != 0)
1504 goto out;
1505 status = encode_getfattr(&xdr, args->bitmask);
1506 out:
1507 return status;
1508 }
1509
1510 /*
1511 * Encode SYMLINK request
1512 */
1513 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1514 {
1515 return nfs4_xdr_enc_create(req, p, args);
1516 }
1517
1518 /*
1519 * Encode GETATTR request
1520 */
1521 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1522 {
1523 struct xdr_stream xdr;
1524 struct compound_hdr hdr = {
1525 .nops = 2,
1526 };
1527 int status;
1528
1529 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1530 encode_compound_hdr(&xdr, &hdr);
1531 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1532 status = encode_getfattr(&xdr, args->bitmask);
1533 return status;
1534 }
1535
1536 /*
1537 * Encode a CLOSE request
1538 */
1539 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1540 {
1541 struct xdr_stream xdr;
1542 struct compound_hdr hdr = {
1543 .nops = 3,
1544 };
1545 int status;
1546
1547 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1548 encode_compound_hdr(&xdr, &hdr);
1549 status = encode_putfh(&xdr, args->fh);
1550 if(status)
1551 goto out;
1552 status = encode_close(&xdr, args);
1553 if (status != 0)
1554 goto out;
1555 status = encode_getfattr(&xdr, args->bitmask);
1556 out:
1557 return status;
1558 }
1559
1560 /*
1561 * Encode an OPEN request
1562 */
1563 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1564 {
1565 struct xdr_stream xdr;
1566 struct compound_hdr hdr = {
1567 .nops = 7,
1568 };
1569 int status;
1570
1571 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1572 encode_compound_hdr(&xdr, &hdr);
1573 status = encode_putfh(&xdr, args->fh);
1574 if (status)
1575 goto out;
1576 status = encode_savefh(&xdr);
1577 if (status)
1578 goto out;
1579 status = encode_open(&xdr, args);
1580 if (status)
1581 goto out;
1582 status = encode_getfh(&xdr);
1583 if (status)
1584 goto out;
1585 status = encode_getfattr(&xdr, args->bitmask);
1586 if (status)
1587 goto out;
1588 status = encode_restorefh(&xdr);
1589 if (status)
1590 goto out;
1591 status = encode_getfattr(&xdr, args->bitmask);
1592 out:
1593 return status;
1594 }
1595
1596 /*
1597 * Encode an OPEN_CONFIRM request
1598 */
1599 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1600 {
1601 struct xdr_stream xdr;
1602 struct compound_hdr hdr = {
1603 .nops = 2,
1604 };
1605 int status;
1606
1607 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1608 encode_compound_hdr(&xdr, &hdr);
1609 status = encode_putfh(&xdr, args->fh);
1610 if(status)
1611 goto out;
1612 status = encode_open_confirm(&xdr, args);
1613 out:
1614 return status;
1615 }
1616
1617 /*
1618 * Encode an OPEN request with no attributes.
1619 */
1620 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1621 {
1622 struct xdr_stream xdr;
1623 struct compound_hdr hdr = {
1624 .nops = 3,
1625 };
1626 int status;
1627
1628 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1629 encode_compound_hdr(&xdr, &hdr);
1630 status = encode_putfh(&xdr, args->fh);
1631 if (status)
1632 goto out;
1633 status = encode_open(&xdr, args);
1634 if (status)
1635 goto out;
1636 status = encode_getfattr(&xdr, args->bitmask);
1637 out:
1638 return status;
1639 }
1640
1641 /*
1642 * Encode an OPEN_DOWNGRADE request
1643 */
1644 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1645 {
1646 struct xdr_stream xdr;
1647 struct compound_hdr hdr = {
1648 .nops = 3,
1649 };
1650 int status;
1651
1652 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1653 encode_compound_hdr(&xdr, &hdr);
1654 status = encode_putfh(&xdr, args->fh);
1655 if (status)
1656 goto out;
1657 status = encode_open_downgrade(&xdr, args);
1658 if (status != 0)
1659 goto out;
1660 status = encode_getfattr(&xdr, args->bitmask);
1661 out:
1662 return status;
1663 }
1664
1665 /*
1666 * Encode a LOCK request
1667 */
1668 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1669 {
1670 struct xdr_stream xdr;
1671 struct compound_hdr hdr = {
1672 .nops = 2,
1673 };
1674 int status;
1675
1676 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1677 encode_compound_hdr(&xdr, &hdr);
1678 status = encode_putfh(&xdr, args->fh);
1679 if(status)
1680 goto out;
1681 status = encode_lock(&xdr, args);
1682 out:
1683 return status;
1684 }
1685
1686 /*
1687 * Encode a LOCKT request
1688 */
1689 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1690 {
1691 struct xdr_stream xdr;
1692 struct compound_hdr hdr = {
1693 .nops = 2,
1694 };
1695 int status;
1696
1697 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1698 encode_compound_hdr(&xdr, &hdr);
1699 status = encode_putfh(&xdr, args->fh);
1700 if(status)
1701 goto out;
1702 status = encode_lockt(&xdr, args);
1703 out:
1704 return status;
1705 }
1706
1707 /*
1708 * Encode a LOCKU request
1709 */
1710 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1711 {
1712 struct xdr_stream xdr;
1713 struct compound_hdr hdr = {
1714 .nops = 2,
1715 };
1716 int status;
1717
1718 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1719 encode_compound_hdr(&xdr, &hdr);
1720 status = encode_putfh(&xdr, args->fh);
1721 if(status)
1722 goto out;
1723 status = encode_locku(&xdr, args);
1724 out:
1725 return status;
1726 }
1727
1728 /*
1729 * Encode a READLINK request
1730 */
1731 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
1732 {
1733 struct xdr_stream xdr;
1734 struct compound_hdr hdr = {
1735 .nops = 2,
1736 };
1737 int status;
1738
1739 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1740 encode_compound_hdr(&xdr, &hdr);
1741 status = encode_putfh(&xdr, args->fh);
1742 if(status)
1743 goto out;
1744 status = encode_readlink(&xdr, args, req);
1745 out:
1746 return status;
1747 }
1748
1749 /*
1750 * Encode a READDIR request
1751 */
1752 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
1753 {
1754 struct xdr_stream xdr;
1755 struct compound_hdr hdr = {
1756 .nops = 2,
1757 };
1758 int status;
1759
1760 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1761 encode_compound_hdr(&xdr, &hdr);
1762 status = encode_putfh(&xdr, args->fh);
1763 if(status)
1764 goto out;
1765 status = encode_readdir(&xdr, args, req);
1766 out:
1767 return status;
1768 }
1769
1770 /*
1771 * Encode a READ request
1772 */
1773 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
1774 {
1775 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1776 struct xdr_stream xdr;
1777 struct compound_hdr hdr = {
1778 .nops = 2,
1779 };
1780 int replen, status;
1781
1782 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1783 encode_compound_hdr(&xdr, &hdr);
1784 status = encode_putfh(&xdr, args->fh);
1785 if (status)
1786 goto out;
1787 status = encode_read(&xdr, args);
1788 if (status)
1789 goto out;
1790
1791 /* set up reply kvec
1792 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1793 * + OP_READ + status + eof + datalen = 9
1794 */
1795 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1796 xdr_inline_pages(&req->rq_rcv_buf, replen,
1797 args->pages, args->pgbase, args->count);
1798 out:
1799 return status;
1800 }
1801
1802 /*
1803 * Encode an SETATTR request
1804 */
1805 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
1806
1807 {
1808 struct xdr_stream xdr;
1809 struct compound_hdr hdr = {
1810 .nops = 3,
1811 };
1812 int status;
1813
1814 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1815 encode_compound_hdr(&xdr, &hdr);
1816 status = encode_putfh(&xdr, args->fh);
1817 if(status)
1818 goto out;
1819 status = encode_setattr(&xdr, args, args->server);
1820 if(status)
1821 goto out;
1822 status = encode_getfattr(&xdr, args->bitmask);
1823 out:
1824 return status;
1825 }
1826
1827 /*
1828 * Encode a GETACL request
1829 */
1830 static int
1831 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
1832 struct nfs_getaclargs *args)
1833 {
1834 struct xdr_stream xdr;
1835 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1836 struct compound_hdr hdr = {
1837 .nops = 2,
1838 };
1839 int replen, status;
1840
1841 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1842 encode_compound_hdr(&xdr, &hdr);
1843 status = encode_putfh(&xdr, args->fh);
1844 if (status)
1845 goto out;
1846 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1847 /* set up reply buffer: */
1848 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1849 xdr_inline_pages(&req->rq_rcv_buf, replen,
1850 args->acl_pages, args->acl_pgbase, args->acl_len);
1851 out:
1852 return status;
1853 }
1854
1855 /*
1856 * Encode a WRITE request
1857 */
1858 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1859 {
1860 struct xdr_stream xdr;
1861 struct compound_hdr hdr = {
1862 .nops = 3,
1863 };
1864 int status;
1865
1866 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1867 encode_compound_hdr(&xdr, &hdr);
1868 status = encode_putfh(&xdr, args->fh);
1869 if (status)
1870 goto out;
1871 status = encode_write(&xdr, args);
1872 if (status)
1873 goto out;
1874 status = encode_getfattr(&xdr, args->bitmask);
1875 out:
1876 return status;
1877 }
1878
1879 /*
1880 * a COMMIT request
1881 */
1882 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1883 {
1884 struct xdr_stream xdr;
1885 struct compound_hdr hdr = {
1886 .nops = 3,
1887 };
1888 int status;
1889
1890 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1891 encode_compound_hdr(&xdr, &hdr);
1892 status = encode_putfh(&xdr, args->fh);
1893 if (status)
1894 goto out;
1895 status = encode_commit(&xdr, args);
1896 if (status)
1897 goto out;
1898 status = encode_getfattr(&xdr, args->bitmask);
1899 out:
1900 return status;
1901 }
1902
1903 /*
1904 * FSINFO request
1905 */
1906 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
1907 {
1908 struct xdr_stream xdr;
1909 struct compound_hdr hdr = {
1910 .nops = 2,
1911 };
1912 int status;
1913
1914 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1915 encode_compound_hdr(&xdr, &hdr);
1916 status = encode_putfh(&xdr, args->fh);
1917 if (!status)
1918 status = encode_fsinfo(&xdr, args->bitmask);
1919 return status;
1920 }
1921
1922 /*
1923 * a PATHCONF request
1924 */
1925 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
1926 {
1927 struct xdr_stream xdr;
1928 struct compound_hdr hdr = {
1929 .nops = 2,
1930 };
1931 int status;
1932
1933 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1934 encode_compound_hdr(&xdr, &hdr);
1935 status = encode_putfh(&xdr, args->fh);
1936 if (!status)
1937 status = encode_getattr_one(&xdr,
1938 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1939 return status;
1940 }
1941
1942 /*
1943 * a STATFS request
1944 */
1945 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
1946 {
1947 struct xdr_stream xdr;
1948 struct compound_hdr hdr = {
1949 .nops = 2,
1950 };
1951 int status;
1952
1953 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1954 encode_compound_hdr(&xdr, &hdr);
1955 status = encode_putfh(&xdr, args->fh);
1956 if (status == 0)
1957 status = encode_getattr_two(&xdr,
1958 args->bitmask[0] & nfs4_statfs_bitmap[0],
1959 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1960 return status;
1961 }
1962
1963 /*
1964 * GETATTR_BITMAP request
1965 */
1966 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, const struct nfs_fh *fhandle)
1967 {
1968 struct xdr_stream xdr;
1969 struct compound_hdr hdr = {
1970 .nops = 2,
1971 };
1972 int status;
1973
1974 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1975 encode_compound_hdr(&xdr, &hdr);
1976 status = encode_putfh(&xdr, fhandle);
1977 if (status == 0)
1978 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1979 FATTR4_WORD0_LINK_SUPPORT|
1980 FATTR4_WORD0_SYMLINK_SUPPORT|
1981 FATTR4_WORD0_ACLSUPPORT);
1982 return status;
1983 }
1984
1985 /*
1986 * a RENEW request
1987 */
1988 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1989 {
1990 struct xdr_stream xdr;
1991 struct compound_hdr hdr = {
1992 .nops = 1,
1993 };
1994
1995 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1996 encode_compound_hdr(&xdr, &hdr);
1997 return encode_renew(&xdr, clp);
1998 }
1999
2000 /*
2001 * a SETCLIENTID request
2002 */
2003 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2004 {
2005 struct xdr_stream xdr;
2006 struct compound_hdr hdr = {
2007 .nops = 1,
2008 };
2009
2010 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2011 encode_compound_hdr(&xdr, &hdr);
2012 return encode_setclientid(&xdr, sc);
2013 }
2014
2015 /*
2016 * a SETCLIENTID_CONFIRM request
2017 */
2018 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2019 {
2020 struct xdr_stream xdr;
2021 struct compound_hdr hdr = {
2022 .nops = 3,
2023 };
2024 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2025 int status;
2026
2027 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2028 encode_compound_hdr(&xdr, &hdr);
2029 status = encode_setclientid_confirm(&xdr, clp);
2030 if (!status)
2031 status = encode_putrootfh(&xdr);
2032 if (!status)
2033 status = encode_fsinfo(&xdr, lease_bitmap);
2034 return status;
2035 }
2036
2037 /*
2038 * DELEGRETURN request
2039 */
2040 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2041 {
2042 struct xdr_stream xdr;
2043 struct compound_hdr hdr = {
2044 .nops = 3,
2045 };
2046 int status;
2047
2048 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2049 encode_compound_hdr(&xdr, &hdr);
2050 status = encode_putfh(&xdr, args->fhandle);
2051 if (status != 0)
2052 goto out;
2053 status = encode_delegreturn(&xdr, args->stateid);
2054 if (status != 0)
2055 goto out;
2056 status = encode_getfattr(&xdr, args->bitmask);
2057 out:
2058 return status;
2059 }
2060
2061 /*
2062 * Encode FS_LOCATIONS request
2063 */
2064 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2065 {
2066 struct xdr_stream xdr;
2067 struct compound_hdr hdr = {
2068 .nops = 3,
2069 };
2070 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
2071 int replen;
2072 int status;
2073
2074 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2075 encode_compound_hdr(&xdr, &hdr);
2076 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
2077 goto out;
2078 if ((status = encode_lookup(&xdr, args->name)) != 0)
2079 goto out;
2080 if ((status = encode_fs_locations(&xdr, args->bitmask)) != 0)
2081 goto out;
2082 /* set up reply
2083 * toplevel_status + OP_PUTFH + status
2084 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2085 */
2086 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2087 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2088 0, PAGE_SIZE);
2089 out:
2090 return status;
2091 }
2092
2093 /*
2094 * START OF "GENERIC" DECODE ROUTINES.
2095 * These may look a little ugly since they are imported from a "generic"
2096 * set of XDR encode/decode routines which are intended to be shared by
2097 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2098 *
2099 * If the pain of reading these is too great, it should be a straightforward
2100 * task to translate them into Linux-specific versions which are more
2101 * consistent with the style used in NFSv2/v3...
2102 */
2103 #define READ32(x) (x) = ntohl(*p++)
2104 #define READ64(x) do { \
2105 (x) = (u64)ntohl(*p++) << 32; \
2106 (x) |= ntohl(*p++); \
2107 } while (0)
2108 #define READTIME(x) do { \
2109 p++; \
2110 (x.tv_sec) = ntohl(*p++); \
2111 (x.tv_nsec) = ntohl(*p++); \
2112 } while (0)
2113 #define COPYMEM(x,nbytes) do { \
2114 memcpy((x), p, nbytes); \
2115 p += XDR_QUADLEN(nbytes); \
2116 } while (0)
2117
2118 #define READ_BUF(nbytes) do { \
2119 p = xdr_inline_decode(xdr, nbytes); \
2120 if (unlikely(!p)) { \
2121 printk(KERN_INFO "%s: prematurely hit end of receive" \
2122 " buffer\n", __FUNCTION__); \
2123 printk(KERN_INFO "%s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2124 __FUNCTION__, xdr->p, nbytes, xdr->end); \
2125 return -EIO; \
2126 } \
2127 } while (0)
2128
2129 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2130 {
2131 __be32 *p;
2132
2133 READ_BUF(4);
2134 READ32(*len);
2135 READ_BUF(*len);
2136 *string = (char *)p;
2137 return 0;
2138 }
2139
2140 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2141 {
2142 __be32 *p;
2143
2144 READ_BUF(8);
2145 READ32(hdr->status);
2146 READ32(hdr->taglen);
2147
2148 READ_BUF(hdr->taglen + 4);
2149 hdr->tag = (char *)p;
2150 p += XDR_QUADLEN(hdr->taglen);
2151 READ32(hdr->nops);
2152 return 0;
2153 }
2154
2155 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2156 {
2157 __be32 *p;
2158 uint32_t opnum;
2159 int32_t nfserr;
2160
2161 READ_BUF(8);
2162 READ32(opnum);
2163 if (opnum != expected) {
2164 printk(KERN_NOTICE
2165 "nfs4_decode_op_hdr: Server returned operation"
2166 " %d but we issued a request for %d\n",
2167 opnum, expected);
2168 return -EIO;
2169 }
2170 READ32(nfserr);
2171 if (nfserr != NFS_OK)
2172 return -nfs4_stat_to_errno(nfserr);
2173 return 0;
2174 }
2175
2176 /* Dummy routine */
2177 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2178 {
2179 __be32 *p;
2180 unsigned int strlen;
2181 char *str;
2182
2183 READ_BUF(12);
2184 return decode_opaque_inline(xdr, &strlen, &str);
2185 }
2186
2187 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2188 {
2189 uint32_t bmlen;
2190 __be32 *p;
2191
2192 READ_BUF(4);
2193 READ32(bmlen);
2194
2195 bitmap[0] = bitmap[1] = 0;
2196 READ_BUF((bmlen << 2));
2197 if (bmlen > 0) {
2198 READ32(bitmap[0]);
2199 if (bmlen > 1)
2200 READ32(bitmap[1]);
2201 }
2202 return 0;
2203 }
2204
2205 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2206 {
2207 __be32 *p;
2208
2209 READ_BUF(4);
2210 READ32(*attrlen);
2211 *savep = xdr->p;
2212 return 0;
2213 }
2214
2215 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2216 {
2217 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2218 decode_attr_bitmap(xdr, bitmask);
2219 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2220 } else
2221 bitmask[0] = bitmask[1] = 0;
2222 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2223 return 0;
2224 }
2225
2226 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2227 {
2228 __be32 *p;
2229
2230 *type = 0;
2231 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2232 return -EIO;
2233 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2234 READ_BUF(4);
2235 READ32(*type);
2236 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2237 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2238 return -EIO;
2239 }
2240 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2241 }
2242 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2243 return 0;
2244 }
2245
2246 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2247 {
2248 __be32 *p;
2249
2250 *change = 0;
2251 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2252 return -EIO;
2253 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2254 READ_BUF(8);
2255 READ64(*change);
2256 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2257 }
2258 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2259 (unsigned long long)*change);
2260 return 0;
2261 }
2262
2263 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2264 {
2265 __be32 *p;
2266
2267 *size = 0;
2268 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2269 return -EIO;
2270 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2271 READ_BUF(8);
2272 READ64(*size);
2273 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2274 }
2275 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2276 return 0;
2277 }
2278
2279 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2280 {
2281 __be32 *p;
2282
2283 *res = 0;
2284 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2285 return -EIO;
2286 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2287 READ_BUF(4);
2288 READ32(*res);
2289 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2290 }
2291 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2292 return 0;
2293 }
2294
2295 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2296 {
2297 __be32 *p;
2298
2299 *res = 0;
2300 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2301 return -EIO;
2302 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2303 READ_BUF(4);
2304 READ32(*res);
2305 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2306 }
2307 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2308 return 0;
2309 }
2310
2311 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2312 {
2313 __be32 *p;
2314
2315 fsid->major = 0;
2316 fsid->minor = 0;
2317 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2318 return -EIO;
2319 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2320 READ_BUF(16);
2321 READ64(fsid->major);
2322 READ64(fsid->minor);
2323 bitmap[0] &= ~FATTR4_WORD0_FSID;
2324 }
2325 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2326 (unsigned long long)fsid->major,
2327 (unsigned long long)fsid->minor);
2328 return 0;
2329 }
2330
2331 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2332 {
2333 __be32 *p;
2334
2335 *res = 60;
2336 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2337 return -EIO;
2338 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2339 READ_BUF(4);
2340 READ32(*res);
2341 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2342 }
2343 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2344 return 0;
2345 }
2346
2347 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2348 {
2349 __be32 *p;
2350
2351 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2352 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2353 return -EIO;
2354 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2355 READ_BUF(4);
2356 READ32(*res);
2357 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2358 }
2359 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2360 return 0;
2361 }
2362
2363 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2364 {
2365 __be32 *p;
2366
2367 *fileid = 0;
2368 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2369 return -EIO;
2370 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2371 READ_BUF(8);
2372 READ64(*fileid);
2373 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2374 }
2375 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2376 return 0;
2377 }
2378
2379 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2380 {
2381 __be32 *p;
2382
2383 *fileid = 0;
2384 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2385 return -EIO;
2386 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2387 READ_BUF(8);
2388 READ64(*fileid);
2389 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2390 }
2391 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2392 return 0;
2393 }
2394
2395 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2396 {
2397 __be32 *p;
2398 int status = 0;
2399
2400 *res = 0;
2401 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2402 return -EIO;
2403 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2404 READ_BUF(8);
2405 READ64(*res);
2406 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2407 }
2408 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2409 return status;
2410 }
2411
2412 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2413 {
2414 __be32 *p;
2415 int status = 0;
2416
2417 *res = 0;
2418 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2419 return -EIO;
2420 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2421 READ_BUF(8);
2422 READ64(*res);
2423 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2424 }
2425 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2426 return status;
2427 }
2428
2429 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2430 {
2431 __be32 *p;
2432 int status = 0;
2433
2434 *res = 0;
2435 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2436 return -EIO;
2437 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2438 READ_BUF(8);
2439 READ64(*res);
2440 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2441 }
2442 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2443 return status;
2444 }
2445
2446 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2447 {
2448 int n;
2449 __be32 *p;
2450 int status = 0;
2451
2452 READ_BUF(4);
2453 READ32(n);
2454 if (n < 0)
2455 goto out_eio;
2456 if (n == 0)
2457 goto root_path;
2458 dprintk("path ");
2459 path->ncomponents = 0;
2460 while (path->ncomponents < n) {
2461 struct nfs4_string *component = &path->components[path->ncomponents];
2462 status = decode_opaque_inline(xdr, &component->len, &component->data);
2463 if (unlikely(status != 0))
2464 goto out_eio;
2465 if (path->ncomponents != n)
2466 dprintk("/");
2467 dprintk("%s", component->data);
2468 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2469 path->ncomponents++;
2470 else {
2471 dprintk("cannot parse %d components in path\n", n);
2472 goto out_eio;
2473 }
2474 }
2475 out:
2476 dprintk("\n");
2477 return status;
2478 root_path:
2479 /* a root pathname is sent as a zero component4 */
2480 path->ncomponents = 1;
2481 path->components[0].len=0;
2482 path->components[0].data=NULL;
2483 dprintk("path /\n");
2484 goto out;
2485 out_eio:
2486 dprintk(" status %d", status);
2487 status = -EIO;
2488 goto out;
2489 }
2490
2491 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2492 {
2493 int n;
2494 __be32 *p;
2495 int status = -EIO;
2496
2497 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2498 goto out;
2499 status = 0;
2500 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2501 goto out;
2502 dprintk("%s: fsroot ", __FUNCTION__);
2503 status = decode_pathname(xdr, &res->fs_path);
2504 if (unlikely(status != 0))
2505 goto out;
2506 READ_BUF(4);
2507 READ32(n);
2508 if (n <= 0)
2509 goto out_eio;
2510 res->nlocations = 0;
2511 while (res->nlocations < n) {
2512 int m;
2513 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2514
2515 READ_BUF(4);
2516 READ32(m);
2517 if (m <= 0)
2518 goto out_eio;
2519
2520 loc->nservers = 0;
2521 dprintk("%s: servers ", __FUNCTION__);
2522 while (loc->nservers < m) {
2523 struct nfs4_string *server = &loc->servers[loc->nservers];
2524 status = decode_opaque_inline(xdr, &server->len, &server->data);
2525 if (unlikely(status != 0))
2526 goto out_eio;
2527 dprintk("%s ", server->data);
2528 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2529 loc->nservers++;
2530 else {
2531 int i;
2532 dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
2533 for (i = loc->nservers; i < m; i++) {
2534 unsigned int len;
2535 char *data;
2536 status = decode_opaque_inline(xdr, &len, &data);
2537 if (unlikely(status != 0))
2538 goto out_eio;
2539 }
2540 }
2541 }
2542 status = decode_pathname(xdr, &loc->rootpath);
2543 if (unlikely(status != 0))
2544 goto out_eio;
2545 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2546 res->nlocations++;
2547 }
2548 out:
2549 dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
2550 return status;
2551 out_eio:
2552 status = -EIO;
2553 goto out;
2554 }
2555
2556 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2557 {
2558 __be32 *p;
2559 int status = 0;
2560
2561 *res = 0;
2562 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2563 return -EIO;
2564 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2565 READ_BUF(8);
2566 READ64(*res);
2567 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2568 }
2569 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2570 return status;
2571 }
2572
2573 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2574 {
2575 __be32 *p;
2576 int status = 0;
2577
2578 *maxlink = 1;
2579 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2580 return -EIO;
2581 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2582 READ_BUF(4);
2583 READ32(*maxlink);
2584 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2585 }
2586 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2587 return status;
2588 }
2589
2590 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2591 {
2592 __be32 *p;
2593 int status = 0;
2594
2595 *maxname = 1024;
2596 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2597 return -EIO;
2598 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2599 READ_BUF(4);
2600 READ32(*maxname);
2601 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2602 }
2603 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2604 return status;
2605 }
2606
2607 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2608 {
2609 __be32 *p;
2610 int status = 0;
2611
2612 *res = 1024;
2613 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2614 return -EIO;
2615 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2616 uint64_t maxread;
2617 READ_BUF(8);
2618 READ64(maxread);
2619 if (maxread > 0x7FFFFFFF)
2620 maxread = 0x7FFFFFFF;
2621 *res = (uint32_t)maxread;
2622 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2623 }
2624 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2625 return status;
2626 }
2627
2628 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2629 {
2630 __be32 *p;
2631 int status = 0;
2632
2633 *res = 1024;
2634 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2635 return -EIO;
2636 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2637 uint64_t maxwrite;
2638 READ_BUF(8);
2639 READ64(maxwrite);
2640 if (maxwrite > 0x7FFFFFFF)
2641 maxwrite = 0x7FFFFFFF;
2642 *res = (uint32_t)maxwrite;
2643 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2644 }
2645 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2646 return status;
2647 }
2648
2649 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2650 {
2651 __be32 *p;
2652
2653 *mode = 0;
2654 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2655 return -EIO;
2656 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2657 READ_BUF(4);
2658 READ32(*mode);
2659 *mode &= ~S_IFMT;
2660 bitmap[1] &= ~FATTR4_WORD1_MODE;
2661 }
2662 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2663 return 0;
2664 }
2665
2666 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2667 {
2668 __be32 *p;
2669
2670 *nlink = 1;
2671 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2672 return -EIO;
2673 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2674 READ_BUF(4);
2675 READ32(*nlink);
2676 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2677 }
2678 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2679 return 0;
2680 }
2681
2682 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
2683 {
2684 uint32_t len;
2685 __be32 *p;
2686
2687 *uid = -2;
2688 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2689 return -EIO;
2690 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2691 READ_BUF(4);
2692 READ32(len);
2693 READ_BUF(len);
2694 if (len < XDR_MAX_NETOBJ) {
2695 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2696 dprintk("%s: nfs_map_name_to_uid failed!\n",
2697 __FUNCTION__);
2698 } else
2699 printk(KERN_WARNING "%s: name too long (%u)!\n",
2700 __FUNCTION__, len);
2701 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2702 }
2703 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2704 return 0;
2705 }
2706
2707 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
2708 {
2709 uint32_t len;
2710 __be32 *p;
2711
2712 *gid = -2;
2713 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2714 return -EIO;
2715 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2716 READ_BUF(4);
2717 READ32(len);
2718 READ_BUF(len);
2719 if (len < XDR_MAX_NETOBJ) {
2720 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2721 dprintk("%s: nfs_map_group_to_gid failed!\n",
2722 __FUNCTION__);
2723 } else
2724 printk(KERN_WARNING "%s: name too long (%u)!\n",
2725 __FUNCTION__, len);
2726 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2727 }
2728 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2729 return 0;
2730 }
2731
2732 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2733 {
2734 uint32_t major = 0, minor = 0;
2735 __be32 *p;
2736
2737 *rdev = MKDEV(0,0);
2738 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2739 return -EIO;
2740 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2741 dev_t tmp;
2742
2743 READ_BUF(8);
2744 READ32(major);
2745 READ32(minor);
2746 tmp = MKDEV(major, minor);
2747 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2748 *rdev = tmp;
2749 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2750 }
2751 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2752 return 0;
2753 }
2754
2755 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2756 {
2757 __be32 *p;
2758 int status = 0;
2759
2760 *res = 0;
2761 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2762 return -EIO;
2763 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2764 READ_BUF(8);
2765 READ64(*res);
2766 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2767 }
2768 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2769 return status;
2770 }
2771
2772 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2773 {
2774 __be32 *p;
2775 int status = 0;
2776
2777 *res = 0;
2778 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2779 return -EIO;
2780 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2781 READ_BUF(8);
2782 READ64(*res);
2783 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2784 }
2785 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2786 return status;
2787 }
2788
2789 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2790 {
2791 __be32 *p;
2792 int status = 0;
2793
2794 *res = 0;
2795 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2796 return -EIO;
2797 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2798 READ_BUF(8);
2799 READ64(*res);
2800 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2801 }
2802 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2803 return status;
2804 }
2805
2806 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2807 {
2808 __be32 *p;
2809
2810 *used = 0;
2811 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2812 return -EIO;
2813 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2814 READ_BUF(8);
2815 READ64(*used);
2816 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2817 }
2818 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2819 (unsigned long long)*used);
2820 return 0;
2821 }
2822
2823 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2824 {
2825 __be32 *p;
2826 uint64_t sec;
2827 uint32_t nsec;
2828
2829 READ_BUF(12);
2830 READ64(sec);
2831 READ32(nsec);
2832 time->tv_sec = (time_t)sec;
2833 time->tv_nsec = (long)nsec;
2834 return 0;
2835 }
2836
2837 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2838 {
2839 int status = 0;
2840
2841 time->tv_sec = 0;
2842 time->tv_nsec = 0;
2843 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2844 return -EIO;
2845 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2846 status = decode_attr_time(xdr, time);
2847 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2848 }
2849 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2850 return status;
2851 }
2852
2853 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2854 {
2855 int status = 0;
2856
2857 time->tv_sec = 0;
2858 time->tv_nsec = 0;
2859 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2860 return -EIO;
2861 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2862 status = decode_attr_time(xdr, time);
2863 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2864 }
2865 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2866 return status;
2867 }
2868
2869 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2870 {
2871 int status = 0;
2872
2873 time->tv_sec = 0;
2874 time->tv_nsec = 0;
2875 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2876 return -EIO;
2877 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2878 status = decode_attr_time(xdr, time);
2879 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2880 }
2881 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2882 return status;
2883 }
2884
2885 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
2886 {
2887 unsigned int attrwords = XDR_QUADLEN(attrlen);
2888 unsigned int nwords = xdr->p - savep;
2889
2890 if (unlikely(attrwords != nwords)) {
2891 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2892 __FUNCTION__,
2893 attrwords << 2,
2894 (attrwords < nwords) ? '<' : '>',
2895 nwords << 2);
2896 return -EIO;
2897 }
2898 return 0;
2899 }
2900
2901 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2902 {
2903 __be32 *p;
2904
2905 READ_BUF(20);
2906 READ32(cinfo->atomic);
2907 READ64(cinfo->before);
2908 READ64(cinfo->after);
2909 return 0;
2910 }
2911
2912 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2913 {
2914 __be32 *p;
2915 uint32_t supp, acc;
2916 int status;
2917
2918 status = decode_op_hdr(xdr, OP_ACCESS);
2919 if (status)
2920 return status;
2921 READ_BUF(8);
2922 READ32(supp);
2923 READ32(acc);
2924 access->supported = supp;
2925 access->access = acc;
2926 return 0;
2927 }
2928
2929 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2930 {
2931 __be32 *p;
2932 int status;
2933
2934 status = decode_op_hdr(xdr, OP_CLOSE);
2935 if (status)
2936 return status;
2937 READ_BUF(NFS4_STATEID_SIZE);
2938 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
2939 return 0;
2940 }
2941
2942 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2943 {
2944 __be32 *p;
2945 int status;
2946
2947 status = decode_op_hdr(xdr, OP_COMMIT);
2948 if (status)
2949 return status;
2950 READ_BUF(8);
2951 COPYMEM(res->verf->verifier, 8);
2952 return 0;
2953 }
2954
2955 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2956 {
2957 __be32 *p;
2958 uint32_t bmlen;
2959 int status;
2960
2961 status = decode_op_hdr(xdr, OP_CREATE);
2962 if (status)
2963 return status;
2964 if ((status = decode_change_info(xdr, cinfo)))
2965 return status;
2966 READ_BUF(4);
2967 READ32(bmlen);
2968 READ_BUF(bmlen << 2);
2969 return 0;
2970 }
2971
2972 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2973 {
2974 __be32 *savep;
2975 uint32_t attrlen,
2976 bitmap[2] = {0};
2977 int status;
2978
2979 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2980 goto xdr_error;
2981 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2982 goto xdr_error;
2983 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2984 goto xdr_error;
2985 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2986 goto xdr_error;
2987 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2988 goto xdr_error;
2989 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2990 goto xdr_error;
2991 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2992 goto xdr_error;
2993 status = verify_attr_len(xdr, savep, attrlen);
2994 xdr_error:
2995 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2996 return status;
2997 }
2998
2999 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3000 {
3001 __be32 *savep;
3002 uint32_t attrlen,
3003 bitmap[2] = {0};
3004 int status;
3005
3006 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3007 goto xdr_error;
3008 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3009 goto xdr_error;
3010 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3011 goto xdr_error;
3012
3013 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3014 goto xdr_error;
3015 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3016 goto xdr_error;
3017 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3018 goto xdr_error;
3019 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3020 goto xdr_error;
3021 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3022 goto xdr_error;
3023 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3024 goto xdr_error;
3025
3026 status = verify_attr_len(xdr, savep, attrlen);
3027 xdr_error:
3028 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
3029 return status;
3030 }
3031
3032 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3033 {
3034 __be32 *savep;
3035 uint32_t attrlen,
3036 bitmap[2] = {0};
3037 int status;
3038
3039 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3040 goto xdr_error;
3041 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3042 goto xdr_error;
3043 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3044 goto xdr_error;
3045
3046 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3047 goto xdr_error;
3048 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3049 goto xdr_error;
3050
3051 status = verify_attr_len(xdr, savep, attrlen);
3052 xdr_error:
3053 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
3054 return status;
3055 }
3056
3057 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3058 {
3059 __be32 *savep;
3060 uint32_t attrlen,
3061 bitmap[2] = {0},
3062 type;
3063 int status, fmode = 0;
3064 uint64_t fileid;
3065
3066 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3067 goto xdr_error;
3068 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3069 goto xdr_error;
3070
3071 fattr->bitmap[0] = bitmap[0];
3072 fattr->bitmap[1] = bitmap[1];
3073
3074 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3075 goto xdr_error;
3076
3077
3078 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3079 goto xdr_error;
3080 fattr->type = nfs_type2fmt[type].nfs2type;
3081 fmode = nfs_type2fmt[type].mode;
3082
3083 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3084 goto xdr_error;
3085 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3086 goto xdr_error;
3087 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
3088 goto xdr_error;
3089 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3090 goto xdr_error;
3091 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3092 struct nfs4_fs_locations,
3093 fattr))) != 0)
3094 goto xdr_error;
3095 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
3096 goto xdr_error;
3097 fattr->mode |= fmode;
3098 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3099 goto xdr_error;
3100 if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
3101 goto xdr_error;
3102 if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
3103 goto xdr_error;
3104 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3105 goto xdr_error;
3106 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3107 goto xdr_error;
3108 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3109 goto xdr_error;
3110 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3111 goto xdr_error;
3112 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3113 goto xdr_error;
3114 if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
3115 goto xdr_error;
3116 if (fattr->fileid == 0 && fileid != 0)
3117 fattr->fileid = fileid;
3118 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
3119 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
3120 xdr_error:
3121 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
3122 return status;
3123 }
3124
3125
3126 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3127 {
3128 __be32 *savep;
3129 uint32_t attrlen, bitmap[2];
3130 int status;
3131
3132 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3133 goto xdr_error;
3134 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3135 goto xdr_error;
3136 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3137 goto xdr_error;
3138
3139 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3140
3141 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3142 goto xdr_error;
3143 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3144 goto xdr_error;
3145 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3146 goto xdr_error;
3147 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3148 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3149 goto xdr_error;
3150 fsinfo->wtpref = fsinfo->wtmax;
3151
3152 status = verify_attr_len(xdr, savep, attrlen);
3153 xdr_error:
3154 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
3155 return status;
3156 }
3157
3158 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3159 {
3160 __be32 *p;
3161 uint32_t len;
3162 int status;
3163
3164 status = decode_op_hdr(xdr, OP_GETFH);
3165 if (status)
3166 return status;
3167 /* Zero handle first to allow comparisons */
3168 memset(fh, 0, sizeof(*fh));
3169
3170 READ_BUF(4);
3171 READ32(len);
3172 if (len > NFS4_FHSIZE)
3173 return -EIO;
3174 fh->size = len;
3175 READ_BUF(len);
3176 COPYMEM(fh->data, len);
3177 return 0;
3178 }
3179
3180 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3181 {
3182 int status;
3183
3184 status = decode_op_hdr(xdr, OP_LINK);
3185 if (status)
3186 return status;
3187 return decode_change_info(xdr, cinfo);
3188 }
3189
3190 /*
3191 * We create the owner, so we know a proper owner.id length is 4.
3192 */
3193 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3194 {
3195 uint64_t offset, length, clientid;
3196 __be32 *p;
3197 uint32_t namelen, type;
3198
3199 READ_BUF(32);
3200 READ64(offset);
3201 READ64(length);
3202 READ32(type);
3203 if (fl != NULL) {
3204 fl->fl_start = (loff_t)offset;
3205 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3206 if (length == ~(uint64_t)0)
3207 fl->fl_end = OFFSET_MAX;
3208 fl->fl_type = F_WRLCK;
3209 if (type & 1)
3210 fl->fl_type = F_RDLCK;
3211 fl->fl_pid = 0;
3212 }
3213 READ64(clientid);
3214 READ32(namelen);
3215 READ_BUF(namelen);
3216 return -NFS4ERR_DENIED;
3217 }
3218
3219 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3220 {
3221 __be32 *p;
3222 int status;
3223
3224 status = decode_op_hdr(xdr, OP_LOCK);
3225 if (status == 0) {
3226 READ_BUF(NFS4_STATEID_SIZE);
3227 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3228 } else if (status == -NFS4ERR_DENIED)
3229 return decode_lock_denied(xdr, NULL);
3230 return status;
3231 }
3232
3233 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3234 {
3235 int status;
3236 status = decode_op_hdr(xdr, OP_LOCKT);
3237 if (status == -NFS4ERR_DENIED)
3238 return decode_lock_denied(xdr, res->denied);
3239 return status;
3240 }
3241
3242 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3243 {
3244 __be32 *p;
3245 int status;
3246
3247 status = decode_op_hdr(xdr, OP_LOCKU);
3248 if (status == 0) {
3249 READ_BUF(NFS4_STATEID_SIZE);
3250 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3251 }
3252 return status;
3253 }
3254
3255 static int decode_lookup(struct xdr_stream *xdr)
3256 {
3257 return decode_op_hdr(xdr, OP_LOOKUP);
3258 }
3259
3260 /* This is too sick! */
3261 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3262 {
3263 __be32 *p;
3264 uint32_t limit_type, nblocks, blocksize;
3265
3266 READ_BUF(12);
3267 READ32(limit_type);
3268 switch (limit_type) {
3269 case 1:
3270 READ64(*maxsize);
3271 break;
3272 case 2:
3273 READ32(nblocks);
3274 READ32(blocksize);
3275 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3276 }
3277 return 0;
3278 }
3279
3280 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3281 {
3282 __be32 *p;
3283 uint32_t delegation_type;
3284
3285 READ_BUF(4);
3286 READ32(delegation_type);
3287 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3288 res->delegation_type = 0;
3289 return 0;
3290 }
3291 READ_BUF(NFS4_STATEID_SIZE+4);
3292 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
3293 READ32(res->do_recall);
3294 switch (delegation_type) {
3295 case NFS4_OPEN_DELEGATE_READ:
3296 res->delegation_type = FMODE_READ;
3297 break;
3298 case NFS4_OPEN_DELEGATE_WRITE:
3299 res->delegation_type = FMODE_WRITE|FMODE_READ;
3300 if (decode_space_limit(xdr, &res->maxsize) < 0)
3301 return -EIO;
3302 }
3303 return decode_ace(xdr, NULL, res->server->nfs_client);
3304 }
3305
3306 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3307 {
3308 __be32 *p;
3309 uint32_t savewords, bmlen, i;
3310 int status;
3311
3312 status = decode_op_hdr(xdr, OP_OPEN);
3313 if (status)
3314 return status;
3315 READ_BUF(NFS4_STATEID_SIZE);
3316 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3317
3318 decode_change_info(xdr, &res->cinfo);
3319
3320 READ_BUF(8);
3321 READ32(res->rflags);
3322 READ32(bmlen);
3323 if (bmlen > 10)
3324 goto xdr_error;
3325
3326 READ_BUF(bmlen << 2);
3327 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3328 for (i = 0; i < savewords; ++i)
3329 READ32(res->attrset[i]);
3330 for (; i < NFS4_BITMAP_SIZE; i++)
3331 res->attrset[i] = 0;
3332
3333 return decode_delegation(xdr, res);
3334 xdr_error:
3335 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
3336 return -EIO;
3337 }
3338
3339 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3340 {
3341 __be32 *p;
3342 int status;
3343
3344 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3345 if (status)
3346 return status;
3347 READ_BUF(NFS4_STATEID_SIZE);
3348 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3349 return 0;
3350 }
3351
3352 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3353 {
3354 __be32 *p;
3355 int status;
3356
3357 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3358 if (status)
3359 return status;
3360 READ_BUF(NFS4_STATEID_SIZE);
3361 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3362 return 0;
3363 }
3364
3365 static int decode_putfh(struct xdr_stream *xdr)
3366 {
3367 return decode_op_hdr(xdr, OP_PUTFH);
3368 }
3369
3370 static int decode_putrootfh(struct xdr_stream *xdr)
3371 {
3372 return decode_op_hdr(xdr, OP_PUTROOTFH);
3373 }
3374
3375 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3376 {
3377 struct kvec *iov = req->rq_rcv_buf.head;
3378 __be32 *p;
3379 uint32_t count, eof, recvd, hdrlen;
3380 int status;
3381
3382 status = decode_op_hdr(xdr, OP_READ);
3383 if (status)
3384 return status;
3385 READ_BUF(8);
3386 READ32(eof);
3387 READ32(count);
3388 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3389 recvd = req->rq_rcv_buf.len - hdrlen;
3390 if (count > recvd) {
3391 printk(KERN_WARNING "NFS: server cheating in read reply: "
3392 "count %u > recvd %u\n", count, recvd);
3393 count = recvd;
3394 eof = 0;
3395 }
3396 xdr_read_pages(xdr, count);
3397 res->eof = eof;
3398 res->count = count;
3399 return 0;
3400 }
3401
3402 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3403 {
3404 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3405 struct page *page = *rcvbuf->pages;
3406 struct kvec *iov = rcvbuf->head;
3407 unsigned int nr, pglen = rcvbuf->page_len;
3408 __be32 *end, *entry, *p, *kaddr;
3409 uint32_t len, attrlen, xlen;
3410 int hdrlen, recvd, status;
3411
3412 status = decode_op_hdr(xdr, OP_READDIR);
3413 if (status)
3414 return status;
3415 READ_BUF(8);
3416 COPYMEM(readdir->verifier.data, 8);
3417 dprintk("%s: verifier = 0x%x%x\n",
3418 __FUNCTION__,
3419 ((u32 *)readdir->verifier.data)[0],
3420 ((u32 *)readdir->verifier.data)[1]);
3421
3422
3423 hdrlen = (char *) p - (char *) iov->iov_base;
3424 recvd = rcvbuf->len - hdrlen;
3425 if (pglen > recvd)
3426 pglen = recvd;
3427 xdr_read_pages(xdr, pglen);
3428
3429 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3430 kaddr = p = kmap_atomic(page, KM_USER0);
3431 end = p + ((pglen + readdir->pgbase) >> 2);
3432 entry = p;
3433 for (nr = 0; *p++; nr++) {
3434 if (end - p < 3)
3435 goto short_pkt;
3436 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3437 p += 2; /* cookie */
3438 len = ntohl(*p++); /* filename length */
3439 if (len > NFS4_MAXNAMLEN) {
3440 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3441 goto err_unmap;
3442 }
3443 xlen = XDR_QUADLEN(len);
3444 if (end - p < xlen + 1)
3445 goto short_pkt;
3446 dprintk("filename = %*s\n", len, (char *)p);
3447 p += xlen;
3448 len = ntohl(*p++); /* bitmap length */
3449 if (end - p < len + 1)
3450 goto short_pkt;
3451 p += len;
3452 attrlen = XDR_QUADLEN(ntohl(*p++));
3453 if (end - p < attrlen + 2)
3454 goto short_pkt;
3455 p += attrlen; /* attributes */
3456 entry = p;
3457 }
3458 if (!nr && (entry[0] != 0 || entry[1] == 0))
3459 goto short_pkt;
3460 out:
3461 kunmap_atomic(kaddr, KM_USER0);
3462 return 0;
3463 short_pkt:
3464 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
3465 entry[0] = entry[1] = 0;
3466 /* truncate listing ? */
3467 if (!nr) {
3468 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3469 entry[1] = 1;
3470 }
3471 goto out;
3472 err_unmap:
3473 kunmap_atomic(kaddr, KM_USER0);
3474 return -errno_NFSERR_IO;
3475 }
3476
3477 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3478 {
3479 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3480 struct kvec *iov = rcvbuf->head;
3481 int hdrlen, len, recvd;
3482 __be32 *p;
3483 char *kaddr;
3484 int status;
3485
3486 status = decode_op_hdr(xdr, OP_READLINK);
3487 if (status)
3488 return status;
3489
3490 /* Convert length of symlink */
3491 READ_BUF(4);
3492 READ32(len);
3493 if (len >= rcvbuf->page_len || len <= 0) {
3494 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3495 return -ENAMETOOLONG;
3496 }
3497 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3498 recvd = req->rq_rcv_buf.len - hdrlen;
3499 if (recvd < len) {
3500 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3501 "count %u > recvd %u\n", len, recvd);
3502 return -EIO;
3503 }
3504 xdr_read_pages(xdr, len);
3505 /*
3506 * The XDR encode routine has set things up so that
3507 * the link text will be copied directly into the
3508 * buffer. We just have to do overflow-checking,
3509 * and and null-terminate the text (the VFS expects
3510 * null-termination).
3511 */
3512 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3513 kaddr[len+rcvbuf->page_base] = '\0';
3514 kunmap_atomic(kaddr, KM_USER0);
3515 return 0;
3516 }
3517
3518 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3519 {
3520 int status;
3521
3522 status = decode_op_hdr(xdr, OP_REMOVE);
3523 if (status)
3524 goto out;
3525 status = decode_change_info(xdr, cinfo);
3526 out:
3527 return status;
3528 }
3529
3530 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3531 struct nfs4_change_info *new_cinfo)
3532 {
3533 int status;
3534
3535 status = decode_op_hdr(xdr, OP_RENAME);
3536 if (status)
3537 goto out;
3538 if ((status = decode_change_info(xdr, old_cinfo)))
3539 goto out;
3540 status = decode_change_info(xdr, new_cinfo);
3541 out:
3542 return status;
3543 }
3544
3545 static int decode_renew(struct xdr_stream *xdr)
3546 {
3547 return decode_op_hdr(xdr, OP_RENEW);
3548 }
3549
3550 static int
3551 decode_restorefh(struct xdr_stream *xdr)
3552 {
3553 return decode_op_hdr(xdr, OP_RESTOREFH);
3554 }
3555
3556 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3557 size_t *acl_len)
3558 {
3559 __be32 *savep;
3560 uint32_t attrlen,
3561 bitmap[2] = {0};
3562 struct kvec *iov = req->rq_rcv_buf.head;
3563 int status;
3564
3565 *acl_len = 0;
3566 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3567 goto out;
3568 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3569 goto out;
3570 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3571 goto out;
3572
3573 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3574 return -EIO;
3575 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3576 int hdrlen, recvd;
3577
3578 /* We ignore &savep and don't do consistency checks on
3579 * the attr length. Let userspace figure it out.... */
3580 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3581 recvd = req->rq_rcv_buf.len - hdrlen;
3582 if (attrlen > recvd) {
3583 printk(KERN_WARNING "NFS: server cheating in getattr"
3584 " acl reply: attrlen %u > recvd %u\n",
3585 attrlen, recvd);
3586 return -EINVAL;
3587 }
3588 xdr_read_pages(xdr, attrlen);
3589 *acl_len = attrlen;
3590 } else
3591 status = -EOPNOTSUPP;
3592
3593 out:
3594 return status;
3595 }
3596
3597 static int
3598 decode_savefh(struct xdr_stream *xdr)
3599 {
3600 return decode_op_hdr(xdr, OP_SAVEFH);
3601 }
3602
3603 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3604 {
3605 __be32 *p;
3606 uint32_t bmlen;
3607 int status;
3608
3609
3610 status = decode_op_hdr(xdr, OP_SETATTR);
3611 if (status)
3612 return status;
3613 READ_BUF(4);
3614 READ32(bmlen);
3615 READ_BUF(bmlen << 2);
3616 return 0;
3617 }
3618
3619 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
3620 {
3621 __be32 *p;
3622 uint32_t opnum;
3623 int32_t nfserr;
3624
3625 READ_BUF(8);
3626 READ32(opnum);
3627 if (opnum != OP_SETCLIENTID) {
3628 printk(KERN_NOTICE
3629 "nfs4_decode_setclientid: Server returned operation"
3630 " %d\n", opnum);
3631 return -EIO;
3632 }
3633 READ32(nfserr);
3634 if (nfserr == NFS_OK) {
3635 READ_BUF(8 + NFS4_VERIFIER_SIZE);
3636 READ64(clp->cl_clientid);
3637 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
3638 } else if (nfserr == NFSERR_CLID_INUSE) {
3639 uint32_t len;
3640
3641 /* skip netid string */
3642 READ_BUF(4);
3643 READ32(len);
3644 READ_BUF(len);
3645
3646 /* skip uaddr string */
3647 READ_BUF(4);
3648 READ32(len);
3649 READ_BUF(len);
3650 return -NFSERR_CLID_INUSE;
3651 } else
3652 return -nfs4_stat_to_errno(nfserr);
3653
3654 return 0;
3655 }
3656
3657 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3658 {
3659 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3660 }
3661
3662 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3663 {
3664 __be32 *p;
3665 int status;
3666
3667 status = decode_op_hdr(xdr, OP_WRITE);
3668 if (status)
3669 return status;
3670
3671 READ_BUF(16);
3672 READ32(res->count);
3673 READ32(res->verf->committed);
3674 COPYMEM(res->verf->verifier, 8);
3675 return 0;
3676 }
3677
3678 static int decode_delegreturn(struct xdr_stream *xdr)
3679 {
3680 return decode_op_hdr(xdr, OP_DELEGRETURN);
3681 }
3682
3683 /*
3684 * Decode OPEN_DOWNGRADE response
3685 */
3686 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
3687 {
3688 struct xdr_stream xdr;
3689 struct compound_hdr hdr;
3690 int status;
3691
3692 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3693 status = decode_compound_hdr(&xdr, &hdr);
3694 if (status)
3695 goto out;
3696 status = decode_putfh(&xdr);
3697 if (status)
3698 goto out;
3699 status = decode_open_downgrade(&xdr, res);
3700 if (status != 0)
3701 goto out;
3702 decode_getfattr(&xdr, res->fattr, res->server);
3703 out:
3704 return status;
3705 }
3706
3707 /*
3708 * END OF "GENERIC" DECODE ROUTINES.
3709 */
3710
3711 /*
3712 * Decode ACCESS response
3713 */
3714 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
3715 {
3716 struct xdr_stream xdr;
3717 struct compound_hdr hdr;
3718 int status;
3719
3720 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3721 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3722 goto out;
3723 if ((status = decode_putfh(&xdr)) == 0)
3724 status = decode_access(&xdr, res);
3725 out:
3726 return status;
3727 }
3728
3729 /*
3730 * Decode LOOKUP response
3731 */
3732 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
3733 {
3734 struct xdr_stream xdr;
3735 struct compound_hdr hdr;
3736 int status;
3737
3738 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3739 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3740 goto out;
3741 if ((status = decode_putfh(&xdr)) != 0)
3742 goto out;
3743 if ((status = decode_lookup(&xdr)) != 0)
3744 goto out;
3745 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3746 goto out;
3747 status = decode_getfattr(&xdr, res->fattr, res->server);
3748 out:
3749 return status;
3750 }
3751
3752 /*
3753 * Decode LOOKUP_ROOT response
3754 */
3755 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
3756 {
3757 struct xdr_stream xdr;
3758 struct compound_hdr hdr;
3759 int status;
3760
3761 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3762 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3763 goto out;
3764 if ((status = decode_putrootfh(&xdr)) != 0)
3765 goto out;
3766 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3767 status = decode_getfattr(&xdr, res->fattr, res->server);
3768 out:
3769 return status;
3770 }
3771
3772 /*
3773 * Decode REMOVE response
3774 */
3775 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_remove_res *res)
3776 {
3777 struct xdr_stream xdr;
3778 struct compound_hdr hdr;
3779 int status;
3780
3781 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3782 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3783 goto out;
3784 if ((status = decode_putfh(&xdr)) != 0)
3785 goto out;
3786 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3787 goto out;
3788 decode_getfattr(&xdr, res->dir_attr, res->server);
3789 out:
3790 return status;
3791 }
3792
3793 /*
3794 * Decode RENAME response
3795 */
3796 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
3797 {
3798 struct xdr_stream xdr;
3799 struct compound_hdr hdr;
3800 int status;
3801
3802 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3803 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3804 goto out;
3805 if ((status = decode_putfh(&xdr)) != 0)
3806 goto out;
3807 if ((status = decode_savefh(&xdr)) != 0)
3808 goto out;
3809 if ((status = decode_putfh(&xdr)) != 0)
3810 goto out;
3811 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3812 goto out;
3813 /* Current FH is target directory */
3814 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3815 goto out;
3816 if ((status = decode_restorefh(&xdr)) != 0)
3817 goto out;
3818 decode_getfattr(&xdr, res->old_fattr, res->server);
3819 out:
3820 return status;
3821 }
3822
3823 /*
3824 * Decode LINK response
3825 */
3826 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
3827 {
3828 struct xdr_stream xdr;
3829 struct compound_hdr hdr;
3830 int status;
3831
3832 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3833 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3834 goto out;
3835 if ((status = decode_putfh(&xdr)) != 0)
3836 goto out;
3837 if ((status = decode_savefh(&xdr)) != 0)
3838 goto out;
3839 if ((status = decode_putfh(&xdr)) != 0)
3840 goto out;
3841 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3842 goto out;
3843 /*
3844 * Note order: OP_LINK leaves the directory as the current
3845 * filehandle.
3846 */
3847 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3848 goto out;
3849 if ((status = decode_restorefh(&xdr)) != 0)
3850 goto out;
3851 decode_getfattr(&xdr, res->fattr, res->server);
3852 out:
3853 return status;
3854 }
3855
3856 /*
3857 * Decode CREATE response
3858 */
3859 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
3860 {
3861 struct xdr_stream xdr;
3862 struct compound_hdr hdr;
3863 int status;
3864
3865 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3866 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3867 goto out;
3868 if ((status = decode_putfh(&xdr)) != 0)
3869 goto out;
3870 if ((status = decode_savefh(&xdr)) != 0)
3871 goto out;
3872 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3873 goto out;
3874 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3875 goto out;
3876 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3877 goto out;
3878 if ((status = decode_restorefh(&xdr)) != 0)
3879 goto out;
3880 decode_getfattr(&xdr, res->dir_fattr, res->server);
3881 out:
3882 return status;
3883 }
3884
3885 /*
3886 * Decode SYMLINK response
3887 */
3888 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
3889 {
3890 return nfs4_xdr_dec_create(rqstp, p, res);
3891 }
3892
3893 /*
3894 * Decode GETATTR response
3895 */
3896 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
3897 {
3898 struct xdr_stream xdr;
3899 struct compound_hdr hdr;
3900 int status;
3901
3902 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3903 status = decode_compound_hdr(&xdr, &hdr);
3904 if (status)
3905 goto out;
3906 status = decode_putfh(&xdr);
3907 if (status)
3908 goto out;
3909 status = decode_getfattr(&xdr, res->fattr, res->server);
3910 out:
3911 return status;
3912
3913 }
3914
3915 /*
3916 * Encode an SETACL request
3917 */
3918 static int
3919 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
3920 {
3921 struct xdr_stream xdr;
3922 struct compound_hdr hdr = {
3923 .nops = 2,
3924 };
3925 int status;
3926
3927 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3928 encode_compound_hdr(&xdr, &hdr);
3929 status = encode_putfh(&xdr, args->fh);
3930 if (status)
3931 goto out;
3932 status = encode_setacl(&xdr, args);
3933 out:
3934 return status;
3935 }
3936 /*
3937 * Decode SETACL response
3938 */
3939 static int
3940 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, void *res)
3941 {
3942 struct xdr_stream xdr;
3943 struct compound_hdr hdr;
3944 int status;
3945
3946 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3947 status = decode_compound_hdr(&xdr, &hdr);
3948 if (status)
3949 goto out;
3950 status = decode_putfh(&xdr);
3951 if (status)
3952 goto out;
3953 status = decode_setattr(&xdr, res);
3954 out:
3955 return status;
3956 }
3957
3958 /*
3959 * Decode GETACL response
3960 */
3961 static int
3962 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, size_t *acl_len)
3963 {
3964 struct xdr_stream xdr;
3965 struct compound_hdr hdr;
3966 int status;
3967
3968 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3969 status = decode_compound_hdr(&xdr, &hdr);
3970 if (status)
3971 goto out;
3972 status = decode_putfh(&xdr);
3973 if (status)
3974 goto out;
3975 status = decode_getacl(&xdr, rqstp, acl_len);
3976
3977 out:
3978 return status;
3979 }
3980
3981 /*
3982 * Decode CLOSE response
3983 */
3984 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
3985 {
3986 struct xdr_stream xdr;
3987 struct compound_hdr hdr;
3988 int status;
3989
3990 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3991 status = decode_compound_hdr(&xdr, &hdr);
3992 if (status)
3993 goto out;
3994 status = decode_putfh(&xdr);
3995 if (status)
3996 goto out;
3997 status = decode_close(&xdr, res);
3998 if (status != 0)
3999 goto out;
4000 /*
4001 * Note: Server may do delete on close for this file
4002 * in which case the getattr call will fail with
4003 * an ESTALE error. Shouldn't be a problem,
4004 * though, since fattr->valid will remain unset.
4005 */
4006 decode_getfattr(&xdr, res->fattr, res->server);
4007 out:
4008 return status;
4009 }
4010
4011 /*
4012 * Decode OPEN response
4013 */
4014 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4015 {
4016 struct xdr_stream xdr;
4017 struct compound_hdr hdr;
4018 int status;
4019
4020 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4021 status = decode_compound_hdr(&xdr, &hdr);
4022 if (status)
4023 goto out;
4024 status = decode_putfh(&xdr);
4025 if (status)
4026 goto out;
4027 status = decode_savefh(&xdr);
4028 if (status)
4029 goto out;
4030 status = decode_open(&xdr, res);
4031 if (status)
4032 goto out;
4033 status = decode_getfh(&xdr, &res->fh);
4034 if (status)
4035 goto out;
4036 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4037 goto out;
4038 if ((status = decode_restorefh(&xdr)) != 0)
4039 goto out;
4040 decode_getfattr(&xdr, res->dir_attr, res->server);
4041 out:
4042 return status;
4043 }
4044
4045 /*
4046 * Decode OPEN_CONFIRM response
4047 */
4048 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
4049 {
4050 struct xdr_stream xdr;
4051 struct compound_hdr hdr;
4052 int status;
4053
4054 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4055 status = decode_compound_hdr(&xdr, &hdr);
4056 if (status)
4057 goto out;
4058 status = decode_putfh(&xdr);
4059 if (status)
4060 goto out;
4061 status = decode_open_confirm(&xdr, res);
4062 out:
4063 return status;
4064 }
4065
4066 /*
4067 * Decode OPEN response
4068 */
4069 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4070 {
4071 struct xdr_stream xdr;
4072 struct compound_hdr hdr;
4073 int status;
4074
4075 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4076 status = decode_compound_hdr(&xdr, &hdr);
4077 if (status)
4078 goto out;
4079 status = decode_putfh(&xdr);
4080 if (status)
4081 goto out;
4082 status = decode_open(&xdr, res);
4083 if (status)
4084 goto out;
4085 decode_getfattr(&xdr, res->f_attr, res->server);
4086 out:
4087 return status;
4088 }
4089
4090 /*
4091 * Decode SETATTR response
4092 */
4093 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4094 {
4095 struct xdr_stream xdr;
4096 struct compound_hdr hdr;
4097 int status;
4098
4099 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4100 status = decode_compound_hdr(&xdr, &hdr);
4101 if (status)
4102 goto out;
4103 status = decode_putfh(&xdr);
4104 if (status)
4105 goto out;
4106 status = decode_setattr(&xdr, res);
4107 if (status)
4108 goto out;
4109 status = decode_getfattr(&xdr, res->fattr, res->server);
4110 if (status == NFS4ERR_DELAY)
4111 status = 0;
4112 out:
4113 return status;
4114 }
4115
4116 /*
4117 * Decode LOCK response
4118 */
4119 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4120 {
4121 struct xdr_stream xdr;
4122 struct compound_hdr hdr;
4123 int status;
4124
4125 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4126 status = decode_compound_hdr(&xdr, &hdr);
4127 if (status)
4128 goto out;
4129 status = decode_putfh(&xdr);
4130 if (status)
4131 goto out;
4132 status = decode_lock(&xdr, res);
4133 out:
4134 return status;
4135 }
4136
4137 /*
4138 * Decode LOCKT response
4139 */
4140 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
4141 {
4142 struct xdr_stream xdr;
4143 struct compound_hdr hdr;
4144 int status;
4145
4146 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4147 status = decode_compound_hdr(&xdr, &hdr);
4148 if (status)
4149 goto out;
4150 status = decode_putfh(&xdr);
4151 if (status)
4152 goto out;
4153 status = decode_lockt(&xdr, res);
4154 out:
4155 return status;
4156 }
4157
4158 /*
4159 * Decode LOCKU response
4160 */
4161 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
4162 {
4163 struct xdr_stream xdr;
4164 struct compound_hdr hdr;
4165 int status;
4166
4167 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4168 status = decode_compound_hdr(&xdr, &hdr);
4169 if (status)
4170 goto out;
4171 status = decode_putfh(&xdr);
4172 if (status)
4173 goto out;
4174 status = decode_locku(&xdr, res);
4175 out:
4176 return status;
4177 }
4178
4179 /*
4180 * Decode READLINK response
4181 */
4182 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, void *res)
4183 {
4184 struct xdr_stream xdr;
4185 struct compound_hdr hdr;
4186 int status;
4187
4188 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4189 status = decode_compound_hdr(&xdr, &hdr);
4190 if (status)
4191 goto out;
4192 status = decode_putfh(&xdr);
4193 if (status)
4194 goto out;
4195 status = decode_readlink(&xdr, rqstp);
4196 out:
4197 return status;
4198 }
4199
4200 /*
4201 * Decode READDIR response
4202 */
4203 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
4204 {
4205 struct xdr_stream xdr;
4206 struct compound_hdr hdr;
4207 int status;
4208
4209 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4210 status = decode_compound_hdr(&xdr, &hdr);
4211 if (status)
4212 goto out;
4213 status = decode_putfh(&xdr);
4214 if (status)
4215 goto out;
4216 status = decode_readdir(&xdr, rqstp, res);
4217 out:
4218 return status;
4219 }
4220
4221 /*
4222 * Decode Read response
4223 */
4224 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
4225 {
4226 struct xdr_stream xdr;
4227 struct compound_hdr hdr;
4228 int status;
4229
4230 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4231 status = decode_compound_hdr(&xdr, &hdr);
4232 if (status)
4233 goto out;
4234 status = decode_putfh(&xdr);
4235 if (status)
4236 goto out;
4237 status = decode_read(&xdr, rqstp, res);
4238 if (!status)
4239 status = res->count;
4240 out:
4241 return status;
4242 }
4243
4244 /*
4245 * Decode WRITE response
4246 */
4247 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4248 {
4249 struct xdr_stream xdr;
4250 struct compound_hdr hdr;
4251 int status;
4252
4253 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4254 status = decode_compound_hdr(&xdr, &hdr);
4255 if (status)
4256 goto out;
4257 status = decode_putfh(&xdr);
4258 if (status)
4259 goto out;
4260 status = decode_write(&xdr, res);
4261 if (status)
4262 goto out;
4263 decode_getfattr(&xdr, res->fattr, res->server);
4264 if (!status)
4265 status = res->count;
4266 out:
4267 return status;
4268 }
4269
4270 /*
4271 * Decode COMMIT response
4272 */
4273 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4274 {
4275 struct xdr_stream xdr;
4276 struct compound_hdr hdr;
4277 int status;
4278
4279 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4280 status = decode_compound_hdr(&xdr, &hdr);
4281 if (status)
4282 goto out;
4283 status = decode_putfh(&xdr);
4284 if (status)
4285 goto out;
4286 status = decode_commit(&xdr, res);
4287 if (status)
4288 goto out;
4289 decode_getfattr(&xdr, res->fattr, res->server);
4290 out:
4291 return status;
4292 }
4293
4294 /*
4295 * FSINFO request
4296 */
4297 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4298 {
4299 struct xdr_stream xdr;
4300 struct compound_hdr hdr;
4301 int status;
4302
4303 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4304 status = decode_compound_hdr(&xdr, &hdr);
4305 if (!status)
4306 status = decode_putfh(&xdr);
4307 if (!status)
4308 status = decode_fsinfo(&xdr, fsinfo);
4309 if (!status)
4310 status = -nfs4_stat_to_errno(hdr.status);
4311 return status;
4312 }
4313
4314 /*
4315 * PATHCONF request
4316 */
4317 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *pathconf)
4318 {
4319 struct xdr_stream xdr;
4320 struct compound_hdr hdr;
4321 int status;
4322
4323 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4324 status = decode_compound_hdr(&xdr, &hdr);
4325 if (!status)
4326 status = decode_putfh(&xdr);
4327 if (!status)
4328 status = decode_pathconf(&xdr, pathconf);
4329 return status;
4330 }
4331
4332 /*
4333 * STATFS request
4334 */
4335 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *fsstat)
4336 {
4337 struct xdr_stream xdr;
4338 struct compound_hdr hdr;
4339 int status;
4340
4341 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4342 status = decode_compound_hdr(&xdr, &hdr);
4343 if (!status)
4344 status = decode_putfh(&xdr);
4345 if (!status)
4346 status = decode_statfs(&xdr, fsstat);
4347 return status;
4348 }
4349
4350 /*
4351 * GETATTR_BITMAP request
4352 */
4353 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
4354 {
4355 struct xdr_stream xdr;
4356 struct compound_hdr hdr;
4357 int status;
4358
4359 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4360 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4361 goto out;
4362 if ((status = decode_putfh(&xdr)) != 0)
4363 goto out;
4364 status = decode_server_caps(&xdr, res);
4365 out:
4366 return status;
4367 }
4368
4369 /*
4370 * Decode RENEW response
4371 */
4372 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
4373 {
4374 struct xdr_stream xdr;
4375 struct compound_hdr hdr;
4376 int status;
4377
4378 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4379 status = decode_compound_hdr(&xdr, &hdr);
4380 if (!status)
4381 status = decode_renew(&xdr);
4382 return status;
4383 }
4384
4385 /*
4386 * a SETCLIENTID request
4387 */
4388 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
4389 struct nfs_client *clp)
4390 {
4391 struct xdr_stream xdr;
4392 struct compound_hdr hdr;
4393 int status;
4394
4395 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4396 status = decode_compound_hdr(&xdr, &hdr);
4397 if (!status)
4398 status = decode_setclientid(&xdr, clp);
4399 if (!status)
4400 status = -nfs4_stat_to_errno(hdr.status);
4401 return status;
4402 }
4403
4404 /*
4405 * a SETCLIENTID_CONFIRM request
4406 */
4407 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4408 {
4409 struct xdr_stream xdr;
4410 struct compound_hdr hdr;
4411 int status;
4412
4413 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4414 status = decode_compound_hdr(&xdr, &hdr);
4415 if (!status)
4416 status = decode_setclientid_confirm(&xdr);
4417 if (!status)
4418 status = decode_putrootfh(&xdr);
4419 if (!status)
4420 status = decode_fsinfo(&xdr, fsinfo);
4421 if (!status)
4422 status = -nfs4_stat_to_errno(hdr.status);
4423 return status;
4424 }
4425
4426 /*
4427 * DELEGRETURN request
4428 */
4429 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
4430 {
4431 struct xdr_stream xdr;
4432 struct compound_hdr hdr;
4433 int status;
4434
4435 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4436 status = decode_compound_hdr(&xdr, &hdr);
4437 if (status != 0)
4438 goto out;
4439 status = decode_putfh(&xdr);
4440 if (status != 0)
4441 goto out;
4442 status = decode_delegreturn(&xdr);
4443 decode_getfattr(&xdr, res->fattr, res->server);
4444 out:
4445 return status;
4446 }
4447
4448 /*
4449 * FS_LOCATIONS request
4450 */
4451 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations *res)
4452 {
4453 struct xdr_stream xdr;
4454 struct compound_hdr hdr;
4455 int status;
4456
4457 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4458 status = decode_compound_hdr(&xdr, &hdr);
4459 if (status != 0)
4460 goto out;
4461 if ((status = decode_putfh(&xdr)) != 0)
4462 goto out;
4463 if ((status = decode_lookup(&xdr)) != 0)
4464 goto out;
4465 xdr_enter_page(&xdr, PAGE_SIZE);
4466 status = decode_getfattr(&xdr, &res->fattr, res->server);
4467 out:
4468 return status;
4469 }
4470
4471 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
4472 {
4473 uint32_t bitmap[2] = {0};
4474 uint32_t len;
4475
4476 if (!*p++) {
4477 if (!*p)
4478 return ERR_PTR(-EAGAIN);
4479 entry->eof = 1;
4480 return ERR_PTR(-EBADCOOKIE);
4481 }
4482
4483 entry->prev_cookie = entry->cookie;
4484 p = xdr_decode_hyper(p, &entry->cookie);
4485 entry->len = ntohl(*p++);
4486 entry->name = (const char *) p;
4487 p += XDR_QUADLEN(entry->len);
4488
4489 /*
4490 * In case the server doesn't return an inode number,
4491 * we fake one here. (We don't use inode number 0,
4492 * since glibc seems to choke on it...)
4493 */
4494 entry->ino = 1;
4495
4496 len = ntohl(*p++); /* bitmap length */
4497 if (len-- > 0) {
4498 bitmap[0] = ntohl(*p++);
4499 if (len-- > 0) {
4500 bitmap[1] = ntohl(*p++);
4501 p += len;
4502 }
4503 }
4504 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4505 if (len > 0) {
4506 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4507 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4508 /* Ignore the return value of rdattr_error for now */
4509 p++;
4510 len--;
4511 }
4512 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4513 xdr_decode_hyper(p, &entry->ino);
4514 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4515 xdr_decode_hyper(p, &entry->ino);
4516 p += len;
4517 }
4518
4519 entry->eof = !p[0] && p[1];
4520 return p;
4521 }
4522
4523 /*
4524 * We need to translate between nfs status return values and
4525 * the local errno values which may not be the same.
4526 */
4527 static struct {
4528 int stat;
4529 int errno;
4530 } nfs_errtbl[] = {
4531 { NFS4_OK, 0 },
4532 { NFS4ERR_PERM, EPERM },
4533 { NFS4ERR_NOENT, ENOENT },
4534 { NFS4ERR_IO, errno_NFSERR_IO },
4535 { NFS4ERR_NXIO, ENXIO },
4536 { NFS4ERR_ACCESS, EACCES },
4537 { NFS4ERR_EXIST, EEXIST },
4538 { NFS4ERR_XDEV, EXDEV },
4539 { NFS4ERR_NOTDIR, ENOTDIR },
4540 { NFS4ERR_ISDIR, EISDIR },
4541 { NFS4ERR_INVAL, EINVAL },
4542 { NFS4ERR_FBIG, EFBIG },
4543 { NFS4ERR_NOSPC, ENOSPC },
4544 { NFS4ERR_ROFS, EROFS },
4545 { NFS4ERR_MLINK, EMLINK },
4546 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4547 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4548 { NFS4ERR_DQUOT, EDQUOT },
4549 { NFS4ERR_STALE, ESTALE },
4550 { NFS4ERR_BADHANDLE, EBADHANDLE },
4551 { NFS4ERR_BADOWNER, EINVAL },
4552 { NFS4ERR_BADNAME, EINVAL },
4553 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4554 { NFS4ERR_NOTSUPP, ENOTSUPP },
4555 { NFS4ERR_TOOSMALL, ETOOSMALL },
4556 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4557 { NFS4ERR_BADTYPE, EBADTYPE },
4558 { NFS4ERR_LOCKED, EAGAIN },
4559 { NFS4ERR_RESOURCE, EREMOTEIO },
4560 { NFS4ERR_SYMLINK, ELOOP },
4561 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4562 { NFS4ERR_DEADLOCK, EDEADLK },
4563 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4564 * to be handled by a
4565 * middle-layer.
4566 */
4567 { -1, EIO }
4568 };
4569
4570 /*
4571 * Convert an NFS error code to a local one.
4572 * This one is used jointly by NFSv2 and NFSv3.
4573 */
4574 static int
4575 nfs4_stat_to_errno(int stat)
4576 {
4577 int i;
4578 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4579 if (nfs_errtbl[i].stat == stat)
4580 return nfs_errtbl[i].errno;
4581 }
4582 if (stat <= 10000 || stat > 10100) {
4583 /* The server is looney tunes. */
4584 return ESERVERFAULT;
4585 }
4586 /* If we cannot translate the error, the recovery routines should
4587 * handle it.
4588 * Note: remaining NFSv4 error codes have values > 10000, so should
4589 * not conflict with native Linux error codes.
4590 */
4591 return stat;
4592 }
4593
4594 #define PROC(proc, argtype, restype) \
4595 [NFSPROC4_CLNT_##proc] = { \
4596 .p_proc = NFSPROC4_COMPOUND, \
4597 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4598 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4599 .p_arglen = NFS4_##argtype##_sz, \
4600 .p_replen = NFS4_##restype##_sz, \
4601 .p_statidx = NFSPROC4_CLNT_##proc, \
4602 .p_name = #proc, \
4603 }
4604
4605 struct rpc_procinfo nfs4_procedures[] = {
4606 PROC(READ, enc_read, dec_read),
4607 PROC(WRITE, enc_write, dec_write),
4608 PROC(COMMIT, enc_commit, dec_commit),
4609 PROC(OPEN, enc_open, dec_open),
4610 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4611 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4612 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4613 PROC(CLOSE, enc_close, dec_close),
4614 PROC(SETATTR, enc_setattr, dec_setattr),
4615 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4616 PROC(RENEW, enc_renew, dec_renew),
4617 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4618 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4619 PROC(LOCK, enc_lock, dec_lock),
4620 PROC(LOCKT, enc_lockt, dec_lockt),
4621 PROC(LOCKU, enc_locku, dec_locku),
4622 PROC(ACCESS, enc_access, dec_access),
4623 PROC(GETATTR, enc_getattr, dec_getattr),
4624 PROC(LOOKUP, enc_lookup, dec_lookup),
4625 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4626 PROC(REMOVE, enc_remove, dec_remove),
4627 PROC(RENAME, enc_rename, dec_rename),
4628 PROC(LINK, enc_link, dec_link),
4629 PROC(SYMLINK, enc_symlink, dec_symlink),
4630 PROC(CREATE, enc_create, dec_create),
4631 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4632 PROC(STATFS, enc_statfs, dec_statfs),
4633 PROC(READLINK, enc_readlink, dec_readlink),
4634 PROC(READDIR, enc_readdir, dec_readdir),
4635 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4636 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
4637 PROC(GETACL, enc_getacl, dec_getacl),
4638 PROC(SETACL, enc_setacl, dec_setacl),
4639 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
4640 };
4641
4642 struct rpc_version nfs_version4 = {
4643 .number = 4,
4644 .nrprocs = ARRAY_SIZE(nfs4_procedures),
4645 .procs = nfs4_procedures
4646 };
4647
4648 /*
4649 * Local variables:
4650 * c-basic-offset: 8
4651 * End:
4652 */
Tomato firmware and modifications.