4 * Client-side XDR for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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.
38 #include <linux/param.h>
39 #include <linux/time.h>
41 #include <linux/slab.h>
42 #include <linux/utsname.h>
43 #include <linux/errno.h>
44 #include <linux/string.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>
56 #define NFSDBG_FACILITY NFSDBG_XDR
58 /* Mapping from NFS error code to "errno" error code. */
59 #define errno_NFSERR_IO EIO
61 static int nfs4_stat_to_errno(int);
63 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
65 #define NFS4_MAXTAGLEN 20
67 #define NFS4_MAXTAGLEN 0
70 /* lock,open owner id:
71 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
73 #define open_owner_id_maxsz (1 + 4)
74 #define lock_owner_id_maxsz (1 + 4)
75 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
76 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
77 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
78 #define op_encode_hdr_maxsz (1)
79 #define op_decode_hdr_maxsz (2)
80 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
81 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
82 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
83 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
84 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
86 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
87 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
88 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
89 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
90 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
91 ((3+NFS4_FHSIZE) >> 2))
92 #define nfs4_fattr_bitmap_maxsz 3
93 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
94 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
95 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
96 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
97 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
98 /* This is based on getfattr, which uses the most attributes: */
99 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
100 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
101 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
102 nfs4_fattr_value_maxsz)
103 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
104 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
109 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
110 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
111 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
112 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
113 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
114 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
115 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
116 #define decode_renew_maxsz (op_decode_hdr_maxsz)
117 #define encode_setclientid_maxsz \
118 (op_encode_hdr_maxsz + \
119 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
120 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
122 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
123 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
125 #define decode_setclientid_maxsz \
126 (op_decode_hdr_maxsz + \
128 1024) /* large value for CLID_INUSE */
129 #define encode_setclientid_confirm_maxsz \
130 (op_encode_hdr_maxsz + \
131 3 + (NFS4_VERIFIER_SIZE >> 2))
132 #define decode_setclientid_confirm_maxsz \
133 (op_decode_hdr_maxsz)
134 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
135 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
136 #define encode_share_access_maxsz \
138 #define encode_createmode_maxsz (1 + encode_attrs_maxsz)
139 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
140 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
141 #define encode_open_maxsz (op_encode_hdr_maxsz + \
142 2 + encode_share_access_maxsz + 2 + \
143 open_owner_id_maxsz + \
144 encode_opentype_maxsz + \
145 encode_claim_null_maxsz)
146 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
147 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
149 #define decode_change_info_maxsz (5)
150 #define decode_open_maxsz (op_decode_hdr_maxsz + \
151 decode_stateid_maxsz + \
152 decode_change_info_maxsz + 1 + \
153 nfs4_fattr_bitmap_maxsz + \
154 decode_delegation_maxsz)
155 #define encode_open_confirm_maxsz \
156 (op_encode_hdr_maxsz + \
157 encode_stateid_maxsz + 1)
158 #define decode_open_confirm_maxsz \
159 (op_decode_hdr_maxsz + \
160 decode_stateid_maxsz)
161 #define encode_open_downgrade_maxsz \
162 (op_encode_hdr_maxsz + \
163 encode_stateid_maxsz + 1 + \
164 encode_share_access_maxsz)
165 #define decode_open_downgrade_maxsz \
166 (op_decode_hdr_maxsz + \
167 decode_stateid_maxsz)
168 #define encode_close_maxsz (op_encode_hdr_maxsz + \
169 1 + encode_stateid_maxsz)
170 #define decode_close_maxsz (op_decode_hdr_maxsz + \
171 decode_stateid_maxsz)
172 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
173 encode_stateid_maxsz + \
175 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
176 nfs4_fattr_bitmap_maxsz)
177 #define encode_read_maxsz (op_encode_hdr_maxsz + \
178 encode_stateid_maxsz + 3)
179 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
180 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
181 2 + encode_verifier_maxsz + 5)
182 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
183 decode_verifier_maxsz)
184 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
185 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
186 #define encode_write_maxsz (op_encode_hdr_maxsz + \
187 encode_stateid_maxsz + 4)
188 #define decode_write_maxsz (op_decode_hdr_maxsz + \
189 2 + decode_verifier_maxsz)
190 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
191 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
192 decode_verifier_maxsz)
193 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
195 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
196 decode_change_info_maxsz)
197 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
199 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
200 decode_change_info_maxsz + \
201 decode_change_info_maxsz)
202 #define encode_link_maxsz (op_encode_hdr_maxsz + \
204 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
205 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
207 1 + encode_stateid_maxsz + 8)
208 #define decode_lock_denied_maxsz \
209 (8 + decode_lockowner_maxsz)
210 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
211 decode_lock_denied_maxsz)
212 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 12)
213 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
214 decode_lock_denied_maxsz)
215 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
216 encode_stateid_maxsz + \
218 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
219 decode_stateid_maxsz)
220 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
221 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
222 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
223 1 + nfs4_name_maxsz + \
226 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
227 #define encode_create_maxsz (op_encode_hdr_maxsz + \
228 1 + 2 + nfs4_name_maxsz + \
230 #define decode_create_maxsz (op_decode_hdr_maxsz + \
231 decode_change_info_maxsz + \
232 nfs4_fattr_bitmap_maxsz)
233 #define encode_statfs_maxsz (encode_getattr_maxsz)
234 #define decode_statfs_maxsz (decode_getattr_maxsz)
235 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
236 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
237 #define encode_getacl_maxsz (encode_getattr_maxsz)
238 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
239 nfs4_fattr_bitmap_maxsz + 1)
240 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
241 encode_stateid_maxsz + 3)
242 #define decode_setacl_maxsz (decode_setattr_maxsz)
243 #define encode_fs_locations_maxsz \
244 (encode_getattr_maxsz)
245 #define decode_fs_locations_maxsz \
248 #if defined(CONFIG_NFS_V4_1)
249 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
250 encode_verifier_maxsz + \
251 1 /* co_ownerid.len */ + \
252 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
255 0 /* SP4_NONE (for now) */ + \
256 1 /* zero implemetation id array */)
257 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
258 2 /* eir_clientid */ + \
259 1 /* eir_sequenceid */ + \
260 1 /* eir_flags */ + \
262 0 /* SP4_NONE (for now) */ + \
263 2 /* eir_server_owner.so_minor_id */ + \
264 /* eir_server_owner.so_major_id<> */ \
265 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
266 /* eir_server_scope<> */ \
267 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
268 1 /* eir_server_impl_id array length */ + \
269 0 /* ignored eir_server_impl_id contents */)
270 #define encode_sequence_maxsz 0 /* stub */
271 #define decode_sequence_maxsz 0 /* stub */
272 #else /* CONFIG_NFS_V4_1 */
273 #define encode_sequence_maxsz 0
274 #define decode_sequence_maxsz 0
275 #endif /* CONFIG_NFS_V4_1 */
277 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
278 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
279 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
280 encode_sequence_maxsz + \
281 encode_putfh_maxsz + \
283 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
284 decode_sequence_maxsz + \
285 decode_putfh_maxsz + \
287 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
288 encode_sequence_maxsz + \
289 encode_putfh_maxsz + \
290 encode_readlink_maxsz)
291 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
292 decode_sequence_maxsz + \
293 decode_putfh_maxsz + \
294 decode_readlink_maxsz)
295 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
296 encode_sequence_maxsz + \
297 encode_putfh_maxsz + \
298 encode_readdir_maxsz)
299 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
300 decode_sequence_maxsz + \
301 decode_putfh_maxsz + \
302 decode_readdir_maxsz)
303 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
304 encode_sequence_maxsz + \
305 encode_putfh_maxsz + \
306 encode_write_maxsz + \
307 encode_getattr_maxsz)
308 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
309 decode_sequence_maxsz + \
310 decode_putfh_maxsz + \
311 decode_write_maxsz + \
312 decode_getattr_maxsz)
313 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
314 encode_sequence_maxsz + \
315 encode_putfh_maxsz + \
316 encode_commit_maxsz + \
317 encode_getattr_maxsz)
318 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
319 decode_sequence_maxsz + \
320 decode_putfh_maxsz + \
321 decode_commit_maxsz + \
322 decode_getattr_maxsz)
323 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
324 encode_sequence_maxsz + \
325 encode_putfh_maxsz + \
326 encode_savefh_maxsz + \
327 encode_open_maxsz + \
328 encode_getfh_maxsz + \
329 encode_getattr_maxsz + \
330 encode_restorefh_maxsz + \
331 encode_getattr_maxsz)
332 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
333 decode_sequence_maxsz + \
334 decode_putfh_maxsz + \
335 decode_savefh_maxsz + \
336 decode_open_maxsz + \
337 decode_getfh_maxsz + \
338 decode_getattr_maxsz + \
339 decode_restorefh_maxsz + \
340 decode_getattr_maxsz)
341 #define NFS4_enc_open_confirm_sz \
342 (compound_encode_hdr_maxsz + \
343 encode_putfh_maxsz + \
344 encode_open_confirm_maxsz)
345 #define NFS4_dec_open_confirm_sz \
346 (compound_decode_hdr_maxsz + \
347 decode_putfh_maxsz + \
348 decode_open_confirm_maxsz)
349 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
350 encode_sequence_maxsz + \
351 encode_putfh_maxsz + \
352 encode_open_maxsz + \
353 encode_getattr_maxsz)
354 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
355 decode_sequence_maxsz + \
356 decode_putfh_maxsz + \
357 decode_open_maxsz + \
358 decode_getattr_maxsz)
359 #define NFS4_enc_open_downgrade_sz \
360 (compound_encode_hdr_maxsz + \
361 encode_sequence_maxsz + \
362 encode_putfh_maxsz + \
363 encode_open_downgrade_maxsz + \
364 encode_getattr_maxsz)
365 #define NFS4_dec_open_downgrade_sz \
366 (compound_decode_hdr_maxsz + \
367 decode_sequence_maxsz + \
368 decode_putfh_maxsz + \
369 decode_open_downgrade_maxsz + \
370 decode_getattr_maxsz)
371 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
372 encode_sequence_maxsz + \
373 encode_putfh_maxsz + \
374 encode_close_maxsz + \
375 encode_getattr_maxsz)
376 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
377 decode_sequence_maxsz + \
378 decode_putfh_maxsz + \
379 decode_close_maxsz + \
380 decode_getattr_maxsz)
381 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
382 encode_sequence_maxsz + \
383 encode_putfh_maxsz + \
384 encode_setattr_maxsz + \
385 encode_getattr_maxsz)
386 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
387 decode_sequence_maxsz + \
388 decode_putfh_maxsz + \
389 decode_setattr_maxsz + \
390 decode_getattr_maxsz)
391 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
392 encode_sequence_maxsz + \
393 encode_putfh_maxsz + \
395 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
396 decode_sequence_maxsz + \
397 decode_putfh_maxsz + \
399 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
401 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
403 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
404 encode_setclientid_maxsz)
405 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
406 decode_setclientid_maxsz)
407 #define NFS4_enc_setclientid_confirm_sz \
408 (compound_encode_hdr_maxsz + \
409 encode_setclientid_confirm_maxsz + \
410 encode_putrootfh_maxsz + \
412 #define NFS4_dec_setclientid_confirm_sz \
413 (compound_decode_hdr_maxsz + \
414 decode_setclientid_confirm_maxsz + \
415 decode_putrootfh_maxsz + \
417 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
418 encode_sequence_maxsz + \
419 encode_putfh_maxsz + \
421 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
422 decode_sequence_maxsz + \
423 decode_putfh_maxsz + \
425 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
426 encode_sequence_maxsz + \
427 encode_putfh_maxsz + \
429 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
430 decode_sequence_maxsz + \
431 decode_putfh_maxsz + \
433 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
434 encode_sequence_maxsz + \
435 encode_putfh_maxsz + \
437 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
438 decode_sequence_maxsz + \
439 decode_putfh_maxsz + \
441 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
442 encode_sequence_maxsz + \
443 encode_putfh_maxsz + \
444 encode_access_maxsz + \
445 encode_getattr_maxsz)
446 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
447 decode_sequence_maxsz + \
448 decode_putfh_maxsz + \
449 decode_access_maxsz + \
450 decode_getattr_maxsz)
451 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
452 encode_sequence_maxsz + \
453 encode_putfh_maxsz + \
454 encode_getattr_maxsz)
455 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
456 decode_sequence_maxsz + \
457 decode_putfh_maxsz + \
458 decode_getattr_maxsz)
459 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
460 encode_sequence_maxsz + \
461 encode_putfh_maxsz + \
462 encode_lookup_maxsz + \
463 encode_getattr_maxsz + \
465 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
466 decode_sequence_maxsz + \
467 decode_putfh_maxsz + \
468 decode_lookup_maxsz + \
469 decode_getattr_maxsz + \
471 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
472 encode_sequence_maxsz + \
473 encode_putrootfh_maxsz + \
474 encode_getattr_maxsz + \
476 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
477 decode_sequence_maxsz + \
478 decode_putrootfh_maxsz + \
479 decode_getattr_maxsz + \
481 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
482 encode_sequence_maxsz + \
483 encode_putfh_maxsz + \
484 encode_remove_maxsz + \
485 encode_getattr_maxsz)
486 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
487 decode_sequence_maxsz + \
488 decode_putfh_maxsz + \
489 decode_remove_maxsz + \
490 decode_getattr_maxsz)
491 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
492 encode_sequence_maxsz + \
493 encode_putfh_maxsz + \
494 encode_savefh_maxsz + \
495 encode_putfh_maxsz + \
496 encode_rename_maxsz + \
497 encode_getattr_maxsz + \
498 encode_restorefh_maxsz + \
499 encode_getattr_maxsz)
500 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
501 decode_sequence_maxsz + \
502 decode_putfh_maxsz + \
503 decode_savefh_maxsz + \
504 decode_putfh_maxsz + \
505 decode_rename_maxsz + \
506 decode_getattr_maxsz + \
507 decode_restorefh_maxsz + \
508 decode_getattr_maxsz)
509 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
510 encode_sequence_maxsz + \
511 encode_putfh_maxsz + \
512 encode_savefh_maxsz + \
513 encode_putfh_maxsz + \
514 encode_link_maxsz + \
515 decode_getattr_maxsz + \
516 encode_restorefh_maxsz + \
517 decode_getattr_maxsz)
518 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
519 decode_sequence_maxsz + \
520 decode_putfh_maxsz + \
521 decode_savefh_maxsz + \
522 decode_putfh_maxsz + \
523 decode_link_maxsz + \
524 decode_getattr_maxsz + \
525 decode_restorefh_maxsz + \
526 decode_getattr_maxsz)
527 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
528 encode_sequence_maxsz + \
529 encode_putfh_maxsz + \
530 encode_symlink_maxsz + \
531 encode_getattr_maxsz + \
533 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
534 decode_sequence_maxsz + \
535 decode_putfh_maxsz + \
536 decode_symlink_maxsz + \
537 decode_getattr_maxsz + \
539 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
540 encode_sequence_maxsz + \
541 encode_putfh_maxsz + \
542 encode_savefh_maxsz + \
543 encode_create_maxsz + \
544 encode_getfh_maxsz + \
545 encode_getattr_maxsz + \
546 encode_restorefh_maxsz + \
547 encode_getattr_maxsz)
548 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
549 decode_sequence_maxsz + \
550 decode_putfh_maxsz + \
551 decode_savefh_maxsz + \
552 decode_create_maxsz + \
553 decode_getfh_maxsz + \
554 decode_getattr_maxsz + \
555 decode_restorefh_maxsz + \
556 decode_getattr_maxsz)
557 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
558 encode_sequence_maxsz + \
559 encode_putfh_maxsz + \
560 encode_getattr_maxsz)
561 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
562 decode_sequence_maxsz + \
563 decode_putfh_maxsz + \
564 decode_getattr_maxsz)
565 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
566 encode_sequence_maxsz + \
567 encode_putfh_maxsz + \
569 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
570 decode_sequence_maxsz + \
571 decode_putfh_maxsz + \
573 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
574 encode_sequence_maxsz + \
575 encode_putfh_maxsz + \
576 encode_getattr_maxsz)
577 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
578 decode_sequence_maxsz + \
579 decode_putfh_maxsz + \
580 decode_getattr_maxsz)
581 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
582 encode_sequence_maxsz + \
583 encode_putfh_maxsz + \
584 encode_delegreturn_maxsz + \
585 encode_getattr_maxsz)
586 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
587 decode_sequence_maxsz + \
588 decode_delegreturn_maxsz + \
589 decode_getattr_maxsz)
590 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
591 encode_sequence_maxsz + \
592 encode_putfh_maxsz + \
594 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
595 decode_sequence_maxsz + \
596 decode_putfh_maxsz + \
598 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
599 encode_sequence_maxsz + \
600 encode_putfh_maxsz + \
602 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
603 decode_sequence_maxsz + \
604 decode_putfh_maxsz + \
606 #define NFS4_enc_fs_locations_sz \
607 (compound_encode_hdr_maxsz + \
608 encode_sequence_maxsz + \
609 encode_putfh_maxsz + \
610 encode_lookup_maxsz + \
611 encode_fs_locations_maxsz)
612 #define NFS4_dec_fs_locations_sz \
613 (compound_decode_hdr_maxsz + \
614 decode_sequence_maxsz + \
615 decode_putfh_maxsz + \
616 decode_lookup_maxsz + \
617 decode_fs_locations_maxsz)
618 #if defined(CONFIG_NFS_V4_1)
619 #define NFS4_enc_exchange_id_sz \
620 (compound_encode_hdr_maxsz + \
621 encode_exchange_id_maxsz)
622 #define NFS4_dec_exchange_id_sz \
623 (compound_decode_hdr_maxsz + \
624 decode_exchange_id_maxsz)
625 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
626 encode_sequence_maxsz + \
627 encode_putrootfh_maxsz + \
629 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
630 decode_sequence_maxsz + \
631 decode_putrootfh_maxsz + \
633 #endif /* CONFIG_NFS_V4_1 */
635 static const umode_t nfs_type2fmt[] = {
642 [NF4SOCK] = S_IFSOCK,
648 struct compound_hdr {
654 uint32_t replen; /* expected reply words */
659 * START OF "GENERIC" ENCODE ROUTINES.
660 * These may look a little ugly since they are imported from a "generic"
661 * set of XDR encode/decode routines which are intended to be shared by
662 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
664 * If the pain of reading these is too great, it should be a straightforward
665 * task to translate them into Linux-specific versions which are more
666 * consistent with the style used in NFSv2/v3...
668 #define WRITE32(n) *p++ = htonl(n)
669 #define WRITE64(n) do { \
670 *p++ = htonl((uint32_t)((n) >> 32)); \
671 *p++ = htonl((uint32_t)(n)); \
673 #define WRITEMEM(ptr,nbytes) do { \
674 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
677 #define RESERVE_SPACE(nbytes) do { \
678 p = xdr_reserve_space(xdr, nbytes); \
682 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
686 p = xdr_reserve_space(xdr, 4 + len);
688 xdr_encode_opaque(p, str, len);
691 static void encode_compound_hdr(struct xdr_stream *xdr,
692 struct rpc_rqst *req,
693 struct compound_hdr *hdr)
696 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
698 /* initialize running count of expected bytes in reply.
699 * NOTE: the replied tag SHOULD be the same is the one sent,
700 * but this is not required as a MUST for the server to do so. */
701 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
703 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
704 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
705 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
706 WRITE32(hdr->taglen);
707 WRITEMEM(hdr->tag, hdr->taglen);
708 WRITE32(hdr->minorversion);
713 static void encode_nops(struct compound_hdr *hdr)
715 *hdr->nops_p = htonl(hdr->nops);
718 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
722 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
724 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
727 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
729 char owner_name[IDMAP_NAMESZ];
730 char owner_group[IDMAP_NAMESZ];
731 int owner_namelen = 0;
732 int owner_grouplen = 0;
740 * We reserve enough space to write the entire attribute buffer at once.
741 * In the worst-case, this would be
742 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
743 * = 36 bytes, plus any contribution from variable-length fields
744 * such as owner/group.
749 if (iap->ia_valid & ATTR_SIZE)
751 if (iap->ia_valid & ATTR_MODE)
753 if (iap->ia_valid & ATTR_UID) {
754 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
755 if (owner_namelen < 0) {
756 dprintk("nfs: couldn't resolve uid %d to string\n",
759 strcpy(owner_name, "nobody");
760 owner_namelen = sizeof("nobody") - 1;
763 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
765 if (iap->ia_valid & ATTR_GID) {
766 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
767 if (owner_grouplen < 0) {
768 dprintk("nfs: couldn't resolve gid %d to string\n",
770 strcpy(owner_group, "nobody");
771 owner_grouplen = sizeof("nobody") - 1;
774 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
776 if (iap->ia_valid & ATTR_ATIME_SET)
778 else if (iap->ia_valid & ATTR_ATIME)
780 if (iap->ia_valid & ATTR_MTIME_SET)
782 else if (iap->ia_valid & ATTR_MTIME)
787 * We write the bitmap length now, but leave the bitmap and the attribute
788 * buffer length to be backfilled at the end of this routine.
794 if (iap->ia_valid & ATTR_SIZE) {
795 bmval0 |= FATTR4_WORD0_SIZE;
796 WRITE64(iap->ia_size);
798 if (iap->ia_valid & ATTR_MODE) {
799 bmval1 |= FATTR4_WORD1_MODE;
800 WRITE32(iap->ia_mode & S_IALLUGO);
802 if (iap->ia_valid & ATTR_UID) {
803 bmval1 |= FATTR4_WORD1_OWNER;
804 WRITE32(owner_namelen);
805 WRITEMEM(owner_name, owner_namelen);
807 if (iap->ia_valid & ATTR_GID) {
808 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
809 WRITE32(owner_grouplen);
810 WRITEMEM(owner_group, owner_grouplen);
812 if (iap->ia_valid & ATTR_ATIME_SET) {
813 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
814 WRITE32(NFS4_SET_TO_CLIENT_TIME);
816 WRITE32(iap->ia_mtime.tv_sec);
817 WRITE32(iap->ia_mtime.tv_nsec);
819 else if (iap->ia_valid & ATTR_ATIME) {
820 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
821 WRITE32(NFS4_SET_TO_SERVER_TIME);
823 if (iap->ia_valid & ATTR_MTIME_SET) {
824 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
825 WRITE32(NFS4_SET_TO_CLIENT_TIME);
827 WRITE32(iap->ia_mtime.tv_sec);
828 WRITE32(iap->ia_mtime.tv_nsec);
830 else if (iap->ia_valid & ATTR_MTIME) {
831 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
832 WRITE32(NFS4_SET_TO_SERVER_TIME);
836 * Now we backfill the bitmap and the attribute buffer length.
838 if (len != ((char *)p - (char *)q) + 4) {
839 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
840 len, ((char *)p - (char *)q) + 4);
843 len = (char *)p - (char *)q - 12;
844 *q++ = htonl(bmval0);
845 *q++ = htonl(bmval1);
851 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
859 hdr->replen += decode_access_maxsz;
862 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
866 RESERVE_SPACE(8+NFS4_STATEID_SIZE);
868 WRITE32(arg->seqid->sequence->counter);
869 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
871 hdr->replen += decode_close_maxsz;
874 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
880 WRITE64(args->offset);
881 WRITE32(args->count);
883 hdr->replen += decode_commit_maxsz;
886 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
892 WRITE32(create->ftype);
894 switch (create->ftype) {
897 WRITE32(create->u.symlink.len);
898 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
901 case NF4BLK: case NF4CHR:
903 WRITE32(create->u.device.specdata1);
904 WRITE32(create->u.device.specdata2);
911 RESERVE_SPACE(4 + create->name->len);
912 WRITE32(create->name->len);
913 WRITEMEM(create->name->name, create->name->len);
915 hdr->replen += decode_create_maxsz;
917 encode_attrs(xdr, create->attrs, create->server);
920 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
929 hdr->replen += decode_getattr_maxsz;
932 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
942 hdr->replen += decode_getattr_maxsz;
945 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
947 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
948 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
951 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
953 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
954 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
957 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
959 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
960 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
963 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
970 hdr->replen += decode_getfh_maxsz;
973 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
977 RESERVE_SPACE(8 + name->len);
980 WRITEMEM(name->name, name->len);
982 hdr->replen += decode_link_maxsz;
985 static inline int nfs4_lock_type(struct file_lock *fl, int block)
987 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
988 return block ? NFS4_READW_LT : NFS4_READ_LT;
989 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
992 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
994 if (fl->fl_end == OFFSET_MAX)
996 return fl->fl_end - fl->fl_start + 1;
1000 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1001 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1003 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1009 WRITE32(nfs4_lock_type(args->fl, args->block));
1010 WRITE32(args->reclaim);
1011 WRITE64(args->fl->fl_start);
1012 WRITE64(nfs4_lock_length(args->fl));
1013 WRITE32(args->new_lock_owner);
1014 if (args->new_lock_owner){
1015 RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
1016 WRITE32(args->open_seqid->sequence->counter);
1017 WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
1018 WRITE32(args->lock_seqid->sequence->counter);
1019 WRITE64(args->lock_owner.clientid);
1021 WRITEMEM("lock id:", 8);
1022 WRITE64(args->lock_owner.id);
1025 RESERVE_SPACE(NFS4_STATEID_SIZE+4);
1026 WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
1027 WRITE32(args->lock_seqid->sequence->counter);
1030 hdr->replen += decode_lock_maxsz;
1033 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1039 WRITE32(nfs4_lock_type(args->fl, 0));
1040 WRITE64(args->fl->fl_start);
1041 WRITE64(nfs4_lock_length(args->fl));
1042 WRITE64(args->lock_owner.clientid);
1044 WRITEMEM("lock id:", 8);
1045 WRITE64(args->lock_owner.id);
1047 hdr->replen += decode_lockt_maxsz;
1050 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1054 RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
1056 WRITE32(nfs4_lock_type(args->fl, 0));
1057 WRITE32(args->seqid->sequence->counter);
1058 WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
1059 WRITE64(args->fl->fl_start);
1060 WRITE64(nfs4_lock_length(args->fl));
1062 hdr->replen += decode_locku_maxsz;
1065 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1067 int len = name->len;
1070 RESERVE_SPACE(8 + len);
1073 WRITEMEM(name->name, len);
1075 hdr->replen += decode_lookup_maxsz;
1078 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1083 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1085 WRITE32(NFS4_SHARE_ACCESS_READ);
1088 WRITE32(NFS4_SHARE_ACCESS_WRITE);
1090 case FMODE_READ|FMODE_WRITE:
1091 WRITE32(NFS4_SHARE_ACCESS_BOTH);
1096 WRITE32(0); /* for linux, share_deny = 0 always */
1099 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1103 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1108 WRITE32(arg->seqid->sequence->counter);
1109 encode_share_access(xdr, arg->fmode);
1111 WRITE64(arg->clientid);
1113 WRITEMEM("open id:", 8);
1117 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1122 switch(arg->open_flags & O_EXCL) {
1124 WRITE32(NFS4_CREATE_UNCHECKED);
1125 encode_attrs(xdr, arg->u.attrs, arg->server);
1128 WRITE32(NFS4_CREATE_EXCLUSIVE);
1129 encode_nfs4_verifier(xdr, &arg->u.verifier);
1133 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1138 switch (arg->open_flags & O_CREAT) {
1140 WRITE32(NFS4_OPEN_NOCREATE);
1143 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1144 WRITE32(NFS4_OPEN_CREATE);
1145 encode_createmode(xdr, arg);
1149 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1154 switch (delegation_type) {
1156 WRITE32(NFS4_OPEN_DELEGATE_NONE);
1159 WRITE32(NFS4_OPEN_DELEGATE_READ);
1161 case FMODE_WRITE|FMODE_READ:
1162 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
1169 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1174 WRITE32(NFS4_OPEN_CLAIM_NULL);
1175 encode_string(xdr, name->len, name->name);
1178 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1183 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
1184 encode_delegation_type(xdr, type);
1187 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1191 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1192 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1193 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1194 encode_string(xdr, name->len, name->name);
1197 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1199 encode_openhdr(xdr, arg);
1200 encode_opentype(xdr, arg);
1201 switch (arg->claim) {
1202 case NFS4_OPEN_CLAIM_NULL:
1203 encode_claim_null(xdr, arg->name);
1205 case NFS4_OPEN_CLAIM_PREVIOUS:
1206 encode_claim_previous(xdr, arg->u.delegation_type);
1208 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1209 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1215 hdr->replen += decode_open_maxsz;
1218 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1222 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1223 WRITE32(OP_OPEN_CONFIRM);
1224 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1225 WRITE32(arg->seqid->sequence->counter);
1227 hdr->replen += decode_open_confirm_maxsz;
1230 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1234 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1235 WRITE32(OP_OPEN_DOWNGRADE);
1236 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1237 WRITE32(arg->seqid->sequence->counter);
1238 encode_share_access(xdr, arg->fmode);
1240 hdr->replen += decode_open_downgrade_maxsz;
1244 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1249 RESERVE_SPACE(8 + len);
1252 WRITEMEM(fh->data, len);
1254 hdr->replen += decode_putfh_maxsz;
1257 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1262 WRITE32(OP_PUTROOTFH);
1264 hdr->replen += decode_putrootfh_maxsz;
1267 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1269 nfs4_stateid stateid;
1272 RESERVE_SPACE(NFS4_STATEID_SIZE);
1273 if (ctx->state != NULL) {
1274 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1275 WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
1277 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1280 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1287 encode_stateid(xdr, args->context);
1290 WRITE64(args->offset);
1291 WRITE32(args->count);
1293 hdr->replen += decode_read_maxsz;
1296 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1298 uint32_t attrs[2] = {
1299 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1300 FATTR4_WORD1_MOUNTED_ON_FILEID,
1304 RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
1305 WRITE32(OP_READDIR);
1306 WRITE64(readdir->cookie);
1307 WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
1308 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1309 WRITE32(readdir->count);
1311 /* Switch to mounted_on_fileid if the server supports it */
1312 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1313 attrs[0] &= ~FATTR4_WORD0_FILEID;
1315 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1316 WRITE32(attrs[0] & readdir->bitmask[0]);
1317 WRITE32(attrs[1] & readdir->bitmask[1]);
1319 hdr->replen += decode_readdir_maxsz;
1320 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1322 (unsigned long long)readdir->cookie,
1323 ((u32 *)readdir->verifier.data)[0],
1324 ((u32 *)readdir->verifier.data)[1],
1325 attrs[0] & readdir->bitmask[0],
1326 attrs[1] & readdir->bitmask[1]);
1329 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1334 WRITE32(OP_READLINK);
1336 hdr->replen += decode_readlink_maxsz;
1339 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1343 RESERVE_SPACE(8 + name->len);
1346 WRITEMEM(name->name, name->len);
1348 hdr->replen += decode_remove_maxsz;
1351 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1355 RESERVE_SPACE(8 + oldname->len);
1357 WRITE32(oldname->len);
1358 WRITEMEM(oldname->name, oldname->len);
1360 RESERVE_SPACE(4 + newname->len);
1361 WRITE32(newname->len);
1362 WRITEMEM(newname->name, newname->len);
1364 hdr->replen += decode_rename_maxsz;
1367 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1373 WRITE64(client_stateid->cl_clientid);
1375 hdr->replen += decode_renew_maxsz;
1379 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1384 WRITE32(OP_RESTOREFH);
1386 hdr->replen += decode_restorefh_maxsz;
1390 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1394 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1395 WRITE32(OP_SETATTR);
1396 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1399 WRITE32(FATTR4_WORD0_ACL);
1400 if (arg->acl_len % 4)
1403 WRITE32(arg->acl_len);
1404 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1406 hdr->replen += decode_setacl_maxsz;
1411 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1418 hdr->replen += decode_savefh_maxsz;
1421 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1425 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1426 WRITE32(OP_SETATTR);
1427 WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
1429 hdr->replen += decode_setattr_maxsz;
1430 encode_attrs(xdr, arg->iap, server);
1433 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1437 RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
1438 WRITE32(OP_SETCLIENTID);
1439 WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1441 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1443 WRITE32(setclientid->sc_prog);
1444 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1445 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1447 WRITE32(setclientid->sc_cb_ident);
1449 hdr->replen += decode_setclientid_maxsz;
1452 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
1456 RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
1457 WRITE32(OP_SETCLIENTID_CONFIRM);
1458 WRITE64(client_state->cl_clientid);
1459 WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1461 hdr->replen += decode_setclientid_confirm_maxsz;
1464 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1471 encode_stateid(xdr, args->context);
1474 WRITE64(args->offset);
1475 WRITE32(args->stable);
1476 WRITE32(args->count);
1478 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1480 hdr->replen += decode_write_maxsz;
1483 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1487 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1489 WRITE32(OP_DELEGRETURN);
1490 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1492 hdr->replen += decode_delegreturn_maxsz;
1495 #if defined(CONFIG_NFS_V4_1)
1496 /* NFSv4.1 operations */
1497 static void encode_exchange_id(struct xdr_stream *xdr,
1498 struct nfs41_exchange_id_args *args,
1499 struct compound_hdr *hdr)
1503 RESERVE_SPACE(4 + sizeof(args->verifier->data));
1504 WRITE32(OP_EXCHANGE_ID);
1505 WRITEMEM(args->verifier->data, sizeof(args->verifier->data));
1507 encode_string(xdr, args->id_len, args->id);
1510 WRITE32(args->flags);
1511 WRITE32(0); /* zero length state_protect4_a */
1512 WRITE32(0); /* zero length implementation id array */
1514 hdr->replen += decode_exchange_id_maxsz;
1516 #endif /* CONFIG_NFS_V4_1 */
1518 static void encode_sequence(struct xdr_stream *xdr,
1519 const struct nfs4_sequence_args *args,
1520 struct compound_hdr *hdr)
1522 #if defined(CONFIG_NFS_V4_1)
1523 struct nfs4_session *session = args->sa_session;
1530 hdr->replen += decode_sequence_maxsz;
1531 #endif /* CONFIG_NFS_V4_1 */
1535 * END OF "GENERIC" ENCODE ROUTINES.
1538 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1540 #if defined(CONFIG_NFS_V4_1)
1541 if (args->sa_session)
1542 return args->sa_session->clp->cl_minorversion;
1543 #endif /* CONFIG_NFS_V4_1 */
1548 * Encode an ACCESS request
1550 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1552 struct xdr_stream xdr;
1553 struct compound_hdr hdr = {
1554 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1557 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1558 encode_compound_hdr(&xdr, req, &hdr);
1559 encode_sequence(&xdr, &args->seq_args, &hdr);
1560 encode_putfh(&xdr, args->fh, &hdr);
1561 encode_access(&xdr, args->access, &hdr);
1562 encode_getfattr(&xdr, args->bitmask, &hdr);
1568 * Encode LOOKUP request
1570 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1572 struct xdr_stream xdr;
1573 struct compound_hdr hdr = {
1574 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1577 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1578 encode_compound_hdr(&xdr, req, &hdr);
1579 encode_sequence(&xdr, &args->seq_args, &hdr);
1580 encode_putfh(&xdr, args->dir_fh, &hdr);
1581 encode_lookup(&xdr, args->name, &hdr);
1582 encode_getfh(&xdr, &hdr);
1583 encode_getfattr(&xdr, args->bitmask, &hdr);
1589 * Encode LOOKUP_ROOT request
1591 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1593 struct xdr_stream xdr;
1594 struct compound_hdr hdr = {
1595 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1598 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1599 encode_compound_hdr(&xdr, req, &hdr);
1600 encode_sequence(&xdr, &args->seq_args, &hdr);
1601 encode_putrootfh(&xdr, &hdr);
1602 encode_getfh(&xdr, &hdr);
1603 encode_getfattr(&xdr, args->bitmask, &hdr);
1609 * Encode REMOVE request
1611 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1613 struct xdr_stream xdr;
1614 struct compound_hdr hdr = {
1615 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1618 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1619 encode_compound_hdr(&xdr, req, &hdr);
1620 encode_sequence(&xdr, &args->seq_args, &hdr);
1621 encode_putfh(&xdr, args->fh, &hdr);
1622 encode_remove(&xdr, &args->name, &hdr);
1623 encode_getfattr(&xdr, args->bitmask, &hdr);
1629 * Encode RENAME request
1631 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1633 struct xdr_stream xdr;
1634 struct compound_hdr hdr = {
1635 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1638 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1639 encode_compound_hdr(&xdr, req, &hdr);
1640 encode_sequence(&xdr, &args->seq_args, &hdr);
1641 encode_putfh(&xdr, args->old_dir, &hdr);
1642 encode_savefh(&xdr, &hdr);
1643 encode_putfh(&xdr, args->new_dir, &hdr);
1644 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1645 encode_getfattr(&xdr, args->bitmask, &hdr);
1646 encode_restorefh(&xdr, &hdr);
1647 encode_getfattr(&xdr, args->bitmask, &hdr);
1653 * Encode LINK request
1655 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1657 struct xdr_stream xdr;
1658 struct compound_hdr hdr = {
1659 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1662 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1663 encode_compound_hdr(&xdr, req, &hdr);
1664 encode_sequence(&xdr, &args->seq_args, &hdr);
1665 encode_putfh(&xdr, args->fh, &hdr);
1666 encode_savefh(&xdr, &hdr);
1667 encode_putfh(&xdr, args->dir_fh, &hdr);
1668 encode_link(&xdr, args->name, &hdr);
1669 encode_getfattr(&xdr, args->bitmask, &hdr);
1670 encode_restorefh(&xdr, &hdr);
1671 encode_getfattr(&xdr, args->bitmask, &hdr);
1677 * Encode CREATE request
1679 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1681 struct xdr_stream xdr;
1682 struct compound_hdr hdr = {
1683 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1686 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1687 encode_compound_hdr(&xdr, req, &hdr);
1688 encode_sequence(&xdr, &args->seq_args, &hdr);
1689 encode_putfh(&xdr, args->dir_fh, &hdr);
1690 encode_savefh(&xdr, &hdr);
1691 encode_create(&xdr, args, &hdr);
1692 encode_getfh(&xdr, &hdr);
1693 encode_getfattr(&xdr, args->bitmask, &hdr);
1694 encode_restorefh(&xdr, &hdr);
1695 encode_getfattr(&xdr, args->bitmask, &hdr);
1701 * Encode SYMLINK request
1703 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1705 return nfs4_xdr_enc_create(req, p, args);
1709 * Encode GETATTR request
1711 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1713 struct xdr_stream xdr;
1714 struct compound_hdr hdr = {
1715 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1718 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1719 encode_compound_hdr(&xdr, req, &hdr);
1720 encode_sequence(&xdr, &args->seq_args, &hdr);
1721 encode_putfh(&xdr, args->fh, &hdr);
1722 encode_getfattr(&xdr, args->bitmask, &hdr);
1728 * Encode a CLOSE request
1730 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1732 struct xdr_stream xdr;
1733 struct compound_hdr hdr = {
1734 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1737 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1738 encode_compound_hdr(&xdr, req, &hdr);
1739 encode_sequence(&xdr, &args->seq_args, &hdr);
1740 encode_putfh(&xdr, args->fh, &hdr);
1741 encode_close(&xdr, args, &hdr);
1742 encode_getfattr(&xdr, args->bitmask, &hdr);
1748 * Encode an OPEN request
1750 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1752 struct xdr_stream xdr;
1753 struct compound_hdr hdr = {
1754 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1757 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1758 encode_compound_hdr(&xdr, req, &hdr);
1759 encode_sequence(&xdr, &args->seq_args, &hdr);
1760 encode_putfh(&xdr, args->fh, &hdr);
1761 encode_savefh(&xdr, &hdr);
1762 encode_open(&xdr, args, &hdr);
1763 encode_getfh(&xdr, &hdr);
1764 encode_getfattr(&xdr, args->bitmask, &hdr);
1765 encode_restorefh(&xdr, &hdr);
1766 encode_getfattr(&xdr, args->bitmask, &hdr);
1772 * Encode an OPEN_CONFIRM request
1774 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1776 struct xdr_stream xdr;
1777 struct compound_hdr hdr = {
1781 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1782 encode_compound_hdr(&xdr, req, &hdr);
1783 encode_putfh(&xdr, args->fh, &hdr);
1784 encode_open_confirm(&xdr, args, &hdr);
1790 * Encode an OPEN request with no attributes.
1792 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1794 struct xdr_stream xdr;
1795 struct compound_hdr hdr = {
1796 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1799 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1800 encode_compound_hdr(&xdr, req, &hdr);
1801 encode_sequence(&xdr, &args->seq_args, &hdr);
1802 encode_putfh(&xdr, args->fh, &hdr);
1803 encode_open(&xdr, args, &hdr);
1804 encode_getfattr(&xdr, args->bitmask, &hdr);
1810 * Encode an OPEN_DOWNGRADE request
1812 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1814 struct xdr_stream xdr;
1815 struct compound_hdr hdr = {
1816 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1819 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1820 encode_compound_hdr(&xdr, req, &hdr);
1821 encode_sequence(&xdr, &args->seq_args, &hdr);
1822 encode_putfh(&xdr, args->fh, &hdr);
1823 encode_open_downgrade(&xdr, args, &hdr);
1824 encode_getfattr(&xdr, args->bitmask, &hdr);
1830 * Encode a LOCK request
1832 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1834 struct xdr_stream xdr;
1835 struct compound_hdr hdr = {
1836 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1839 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1840 encode_compound_hdr(&xdr, req, &hdr);
1841 encode_sequence(&xdr, &args->seq_args, &hdr);
1842 encode_putfh(&xdr, args->fh, &hdr);
1843 encode_lock(&xdr, args, &hdr);
1849 * Encode a LOCKT request
1851 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1853 struct xdr_stream xdr;
1854 struct compound_hdr hdr = {
1855 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1858 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1859 encode_compound_hdr(&xdr, req, &hdr);
1860 encode_sequence(&xdr, &args->seq_args, &hdr);
1861 encode_putfh(&xdr, args->fh, &hdr);
1862 encode_lockt(&xdr, args, &hdr);
1868 * Encode a LOCKU request
1870 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1872 struct xdr_stream xdr;
1873 struct compound_hdr hdr = {
1874 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1877 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1878 encode_compound_hdr(&xdr, req, &hdr);
1879 encode_sequence(&xdr, &args->seq_args, &hdr);
1880 encode_putfh(&xdr, args->fh, &hdr);
1881 encode_locku(&xdr, args, &hdr);
1887 * Encode a READLINK request
1889 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
1891 struct xdr_stream xdr;
1892 struct compound_hdr hdr = {
1893 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1896 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1897 encode_compound_hdr(&xdr, req, &hdr);
1898 encode_sequence(&xdr, &args->seq_args, &hdr);
1899 encode_putfh(&xdr, args->fh, &hdr);
1900 encode_readlink(&xdr, args, req, &hdr);
1902 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
1903 args->pgbase, args->pglen);
1909 * Encode a READDIR request
1911 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
1913 struct xdr_stream xdr;
1914 struct compound_hdr hdr = {
1915 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1918 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1919 encode_compound_hdr(&xdr, req, &hdr);
1920 encode_sequence(&xdr, &args->seq_args, &hdr);
1921 encode_putfh(&xdr, args->fh, &hdr);
1922 encode_readdir(&xdr, args, req, &hdr);
1924 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
1925 args->pgbase, args->count);
1926 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1927 __func__, hdr.replen << 2, args->pages,
1928 args->pgbase, args->count);
1934 * Encode a READ request
1936 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
1938 struct xdr_stream xdr;
1939 struct compound_hdr hdr = {
1940 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1943 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1944 encode_compound_hdr(&xdr, req, &hdr);
1945 encode_sequence(&xdr, &args->seq_args, &hdr);
1946 encode_putfh(&xdr, args->fh, &hdr);
1947 encode_read(&xdr, args, &hdr);
1949 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
1950 args->pages, args->pgbase, args->count);
1951 req->rq_rcv_buf.flags |= XDRBUF_READ;
1957 * Encode an SETATTR request
1959 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
1961 struct xdr_stream xdr;
1962 struct compound_hdr hdr = {
1963 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1966 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1967 encode_compound_hdr(&xdr, req, &hdr);
1968 encode_sequence(&xdr, &args->seq_args, &hdr);
1969 encode_putfh(&xdr, args->fh, &hdr);
1970 encode_setattr(&xdr, args, args->server, &hdr);
1971 encode_getfattr(&xdr, args->bitmask, &hdr);
1977 * Encode a GETACL request
1980 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
1981 struct nfs_getaclargs *args)
1983 struct xdr_stream xdr;
1984 struct compound_hdr hdr = {
1985 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1989 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1990 encode_compound_hdr(&xdr, req, &hdr);
1991 encode_sequence(&xdr, &args->seq_args, &hdr);
1992 encode_putfh(&xdr, args->fh, &hdr);
1993 replen = hdr.replen + nfs4_fattr_bitmap_maxsz + 1;
1994 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
1996 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
1997 args->acl_pages, args->acl_pgbase, args->acl_len);
2003 * Encode a WRITE request
2005 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2007 struct xdr_stream xdr;
2008 struct compound_hdr hdr = {
2009 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2012 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2013 encode_compound_hdr(&xdr, req, &hdr);
2014 encode_sequence(&xdr, &args->seq_args, &hdr);
2015 encode_putfh(&xdr, args->fh, &hdr);
2016 encode_write(&xdr, args, &hdr);
2017 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2018 encode_getfattr(&xdr, args->bitmask, &hdr);
2026 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2028 struct xdr_stream xdr;
2029 struct compound_hdr hdr = {
2030 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2033 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2034 encode_compound_hdr(&xdr, req, &hdr);
2035 encode_sequence(&xdr, &args->seq_args, &hdr);
2036 encode_putfh(&xdr, args->fh, &hdr);
2037 encode_commit(&xdr, args, &hdr);
2038 encode_getfattr(&xdr, args->bitmask, &hdr);
2046 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2048 struct xdr_stream xdr;
2049 struct compound_hdr hdr = {
2050 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2053 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2054 encode_compound_hdr(&xdr, req, &hdr);
2055 encode_sequence(&xdr, &args->seq_args, &hdr);
2056 encode_putfh(&xdr, args->fh, &hdr);
2057 encode_fsinfo(&xdr, args->bitmask, &hdr);
2063 * a PATHCONF request
2065 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2067 struct xdr_stream xdr;
2068 struct compound_hdr hdr = {
2069 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2072 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2073 encode_compound_hdr(&xdr, req, &hdr);
2074 encode_sequence(&xdr, &args->seq_args, &hdr);
2075 encode_putfh(&xdr, args->fh, &hdr);
2076 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2085 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2087 struct xdr_stream xdr;
2088 struct compound_hdr hdr = {
2089 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2092 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2093 encode_compound_hdr(&xdr, req, &hdr);
2094 encode_sequence(&xdr, &args->seq_args, &hdr);
2095 encode_putfh(&xdr, args->fh, &hdr);
2096 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2097 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2103 * GETATTR_BITMAP request
2105 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2106 struct nfs4_server_caps_arg *args)
2108 struct xdr_stream xdr;
2109 struct compound_hdr hdr = {
2110 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2113 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2114 encode_compound_hdr(&xdr, req, &hdr);
2115 encode_sequence(&xdr, &args->seq_args, &hdr);
2116 encode_putfh(&xdr, args->fhandle, &hdr);
2117 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2118 FATTR4_WORD0_LINK_SUPPORT|
2119 FATTR4_WORD0_SYMLINK_SUPPORT|
2120 FATTR4_WORD0_ACLSUPPORT, &hdr);
2128 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2130 struct xdr_stream xdr;
2131 struct compound_hdr hdr = {
2135 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2136 encode_compound_hdr(&xdr, req, &hdr);
2137 encode_renew(&xdr, clp, &hdr);
2143 * a SETCLIENTID request
2145 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2147 struct xdr_stream xdr;
2148 struct compound_hdr hdr = {
2152 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2153 encode_compound_hdr(&xdr, req, &hdr);
2154 encode_setclientid(&xdr, sc, &hdr);
2160 * a SETCLIENTID_CONFIRM request
2162 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2164 struct xdr_stream xdr;
2165 struct compound_hdr hdr = {
2168 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2170 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2171 encode_compound_hdr(&xdr, req, &hdr);
2172 encode_setclientid_confirm(&xdr, clp, &hdr);
2173 encode_putrootfh(&xdr, &hdr);
2174 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2180 * DELEGRETURN request
2182 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2184 struct xdr_stream xdr;
2185 struct compound_hdr hdr = {
2186 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2189 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2190 encode_compound_hdr(&xdr, req, &hdr);
2191 encode_sequence(&xdr, &args->seq_args, &hdr);
2192 encode_putfh(&xdr, args->fhandle, &hdr);
2193 encode_delegreturn(&xdr, args->stateid, &hdr);
2194 encode_getfattr(&xdr, args->bitmask, &hdr);
2200 * Encode FS_LOCATIONS request
2202 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2204 struct xdr_stream xdr;
2205 struct compound_hdr hdr = {
2206 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2210 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2211 encode_compound_hdr(&xdr, req, &hdr);
2212 encode_sequence(&xdr, &args->seq_args, &hdr);
2213 encode_putfh(&xdr, args->dir_fh, &hdr);
2214 encode_lookup(&xdr, args->name, &hdr);
2215 replen = hdr.replen; /* get the attribute into args->page */
2216 encode_fs_locations(&xdr, args->bitmask, &hdr);
2218 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2224 #if defined(CONFIG_NFS_V4_1)
2226 * EXCHANGE_ID request
2228 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2229 struct nfs41_exchange_id_args *args)
2231 struct xdr_stream xdr;
2232 struct compound_hdr hdr = {
2233 .minorversion = args->client->cl_minorversion,
2236 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2237 encode_compound_hdr(&xdr, req, &hdr);
2238 encode_exchange_id(&xdr, args, &hdr);
2244 * a GET_LEASE_TIME request
2246 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2247 struct nfs4_get_lease_time_args *args)
2249 struct xdr_stream xdr;
2250 struct compound_hdr hdr = {
2251 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2253 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2255 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2256 encode_compound_hdr(&xdr, req, &hdr);
2257 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2258 encode_putrootfh(&xdr, &hdr);
2259 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2263 #endif /* CONFIG_NFS_V4_1 */
2266 * START OF "GENERIC" DECODE ROUTINES.
2267 * These may look a little ugly since they are imported from a "generic"
2268 * set of XDR encode/decode routines which are intended to be shared by
2269 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2271 * If the pain of reading these is too great, it should be a straightforward
2272 * task to translate them into Linux-specific versions which are more
2273 * consistent with the style used in NFSv2/v3...
2275 #define READ32(x) (x) = ntohl(*p++)
2276 #define READ64(x) do { \
2277 (x) = (u64)ntohl(*p++) << 32; \
2278 (x) |= ntohl(*p++); \
2280 #define READTIME(x) do { \
2282 (x.tv_sec) = ntohl(*p++); \
2283 (x.tv_nsec) = ntohl(*p++); \
2285 #define COPYMEM(x,nbytes) do { \
2286 memcpy((x), p, nbytes); \
2287 p += XDR_QUADLEN(nbytes); \
2290 #define READ_BUF(nbytes) do { \
2291 p = xdr_inline_decode(xdr, nbytes); \
2292 if (unlikely(!p)) { \
2293 dprintk("nfs: %s: prematurely hit end of receive" \
2294 " buffer\n", __func__); \
2295 dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2296 __func__, xdr->p, nbytes, xdr->end); \
2301 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2308 *string = (char *)p;
2312 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2317 READ32(hdr->status);
2318 READ32(hdr->taglen);
2320 READ_BUF(hdr->taglen + 4);
2321 hdr->tag = (char *)p;
2322 p += XDR_QUADLEN(hdr->taglen);
2324 if (unlikely(hdr->nops < 1))
2325 return nfs4_stat_to_errno(hdr->status);
2329 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2337 if (opnum != expected) {
2338 dprintk("nfs: Server returned operation"
2339 " %d but we issued a request for %d\n",
2344 if (nfserr != NFS_OK)
2345 return nfs4_stat_to_errno(nfserr);
2350 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2353 unsigned int strlen;
2357 return decode_opaque_inline(xdr, &strlen, &str);
2360 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2368 bitmap[0] = bitmap[1] = 0;
2369 READ_BUF((bmlen << 2));
2378 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2388 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2390 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2391 decode_attr_bitmap(xdr, bitmask);
2392 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2394 bitmask[0] = bitmask[1] = 0;
2395 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2399 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2405 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2407 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2410 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2411 dprintk("%s: bad type %d\n", __func__, *type);
2414 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2415 ret = NFS_ATTR_FATTR_TYPE;
2417 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2421 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2427 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2429 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2432 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2433 ret = NFS_ATTR_FATTR_CHANGE;
2435 dprintk("%s: change attribute=%Lu\n", __func__,
2436 (unsigned long long)*change);
2440 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2446 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2448 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2451 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2452 ret = NFS_ATTR_FATTR_SIZE;
2454 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2458 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2463 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2465 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2468 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2470 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2474 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2479 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2481 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2484 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2486 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2490 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2497 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2499 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2501 READ64(fsid->major);
2502 READ64(fsid->minor);
2503 bitmap[0] &= ~FATTR4_WORD0_FSID;
2504 ret = NFS_ATTR_FATTR_FSID;
2506 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2507 (unsigned long long)fsid->major,
2508 (unsigned long long)fsid->minor);
2512 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2517 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2519 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2522 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2524 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2528 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2532 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2533 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2535 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2538 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2540 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2544 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2550 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2552 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2555 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2556 ret = NFS_ATTR_FATTR_FILEID;
2558 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2562 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2568 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2570 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2573 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2574 ret = NFS_ATTR_FATTR_FILEID;
2576 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2580 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2586 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2588 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2591 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2593 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2597 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2603 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2605 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2608 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2610 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2614 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2620 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2622 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2625 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2627 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2631 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2642 path->ncomponents = 0;
2643 while (path->ncomponents < n) {
2644 struct nfs4_string *component = &path->components[path->ncomponents];
2645 status = decode_opaque_inline(xdr, &component->len, &component->data);
2646 if (unlikely(status != 0))
2648 if (path->ncomponents != n)
2650 dprintk("%s", component->data);
2651 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2652 path->ncomponents++;
2654 dprintk("cannot parse %d components in path\n", n);
2662 /* a root pathname is sent as a zero component4 */
2663 path->ncomponents = 1;
2664 path->components[0].len=0;
2665 path->components[0].data=NULL;
2666 dprintk("path /\n");
2669 dprintk(" status %d", status);
2674 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2680 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2683 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2685 dprintk("%s: fsroot ", __func__);
2686 status = decode_pathname(xdr, &res->fs_path);
2687 if (unlikely(status != 0))
2693 res->nlocations = 0;
2694 while (res->nlocations < n) {
2696 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2702 dprintk("%s: servers ", __func__);
2703 while (loc->nservers < m) {
2704 struct nfs4_string *server = &loc->servers[loc->nservers];
2705 status = decode_opaque_inline(xdr, &server->len, &server->data);
2706 if (unlikely(status != 0))
2708 dprintk("%s ", server->data);
2709 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2713 dprintk("%s: using first %u of %u servers "
2714 "returned for location %u\n",
2716 NFS4_FS_LOCATION_MAXSERVERS,
2717 m, res->nlocations);
2718 for (i = loc->nservers; i < m; i++) {
2721 status = decode_opaque_inline(xdr, &len, &data);
2722 if (unlikely(status != 0))
2727 status = decode_pathname(xdr, &loc->rootpath);
2728 if (unlikely(status != 0))
2730 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2733 if (res->nlocations != 0)
2734 status = NFS_ATTR_FATTR_V4_REFERRAL;
2736 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
2743 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2749 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2751 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2754 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2756 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
2760 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2766 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2768 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2771 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2773 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
2777 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2783 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2785 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2788 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2790 dprintk("%s: maxname=%u\n", __func__, *maxname);
2794 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2800 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2802 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2806 if (maxread > 0x7FFFFFFF)
2807 maxread = 0x7FFFFFFF;
2808 *res = (uint32_t)maxread;
2809 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2811 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
2815 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2821 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2823 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2827 if (maxwrite > 0x7FFFFFFF)
2828 maxwrite = 0x7FFFFFFF;
2829 *res = (uint32_t)maxwrite;
2830 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2832 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
2836 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
2843 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2845 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2848 *mode = tmp & ~S_IFMT;
2849 bitmap[1] &= ~FATTR4_WORD1_MODE;
2850 ret = NFS_ATTR_FATTR_MODE;
2852 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
2856 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2862 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2864 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2867 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2868 ret = NFS_ATTR_FATTR_NLINK;
2870 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
2874 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
2881 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2883 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2887 if (len < XDR_MAX_NETOBJ) {
2888 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
2889 ret = NFS_ATTR_FATTR_OWNER;
2891 dprintk("%s: nfs_map_name_to_uid failed!\n",
2894 dprintk("%s: name too long (%u)!\n",
2896 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2898 dprintk("%s: uid=%d\n", __func__, (int)*uid);
2902 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
2909 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2911 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2915 if (len < XDR_MAX_NETOBJ) {
2916 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
2917 ret = NFS_ATTR_FATTR_GROUP;
2919 dprintk("%s: nfs_map_group_to_gid failed!\n",
2922 dprintk("%s: name too long (%u)!\n",
2924 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2926 dprintk("%s: gid=%d\n", __func__, (int)*gid);
2930 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2932 uint32_t major = 0, minor = 0;
2937 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2939 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2945 tmp = MKDEV(major, minor);
2946 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2948 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2949 ret = NFS_ATTR_FATTR_RDEV;
2951 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
2955 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2961 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2963 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2966 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2968 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
2972 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2978 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2980 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2983 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2985 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
2989 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2995 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2997 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3000 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3002 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3006 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3012 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3014 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3017 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3018 ret = NFS_ATTR_FATTR_SPACE_USED;
3020 dprintk("%s: space used=%Lu\n", __func__,
3021 (unsigned long long)*used);
3025 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3034 time->tv_sec = (time_t)sec;
3035 time->tv_nsec = (long)nsec;
3039 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3045 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3047 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3048 status = decode_attr_time(xdr, time);
3050 status = NFS_ATTR_FATTR_ATIME;
3051 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3053 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3057 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3063 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3065 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3066 status = decode_attr_time(xdr, time);
3068 status = NFS_ATTR_FATTR_CTIME;
3069 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3071 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3075 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3081 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3083 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3084 status = decode_attr_time(xdr, time);
3086 status = NFS_ATTR_FATTR_MTIME;
3087 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3089 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3093 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3095 unsigned int attrwords = XDR_QUADLEN(attrlen);
3096 unsigned int nwords = xdr->p - savep;
3098 if (unlikely(attrwords != nwords)) {
3099 dprintk("%s: server returned incorrect attribute length: "
3103 (attrwords < nwords) ? '<' : '>',
3110 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3115 READ32(cinfo->atomic);
3116 READ64(cinfo->before);
3117 READ64(cinfo->after);
3121 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3127 status = decode_op_hdr(xdr, OP_ACCESS);
3133 access->supported = supp;
3134 access->access = acc;
3138 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3143 status = decode_op_hdr(xdr, OP_CLOSE);
3145 nfs_increment_open_seqid(status, res->seqid);
3148 READ_BUF(NFS4_STATEID_SIZE);
3149 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3153 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3158 status = decode_op_hdr(xdr, OP_COMMIT);
3162 COPYMEM(res->verf->verifier, 8);
3166 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3172 status = decode_op_hdr(xdr, OP_CREATE);
3175 if ((status = decode_change_info(xdr, cinfo)))
3179 READ_BUF(bmlen << 2);
3183 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3186 uint32_t attrlen, bitmap[2] = {0};
3189 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3191 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3193 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3195 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3197 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3199 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3201 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3203 status = verify_attr_len(xdr, savep, attrlen);
3205 dprintk("%s: xdr returned %d!\n", __func__, -status);
3209 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3212 uint32_t attrlen, bitmap[2] = {0};
3215 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3217 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3219 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3222 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3224 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3226 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3228 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3230 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3232 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3235 status = verify_attr_len(xdr, savep, attrlen);
3237 dprintk("%s: xdr returned %d!\n", __func__, -status);
3241 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3244 uint32_t attrlen, bitmap[2] = {0};
3247 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3249 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3251 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3254 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3256 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3259 status = verify_attr_len(xdr, savep, attrlen);
3261 dprintk("%s: xdr returned %d!\n", __func__, -status);
3265 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3275 status = decode_op_hdr(xdr, OP_GETATTR);
3279 status = decode_attr_bitmap(xdr, bitmap);
3283 status = decode_attr_length(xdr, &attrlen, &savep);
3288 status = decode_attr_type(xdr, bitmap, &type);
3293 fattr->mode |= nfs_type2fmt[type];
3294 fattr->valid |= status;
3297 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3300 fattr->valid |= status;
3302 status = decode_attr_size(xdr, bitmap, &fattr->size);
3305 fattr->valid |= status;
3307 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3310 fattr->valid |= status;
3312 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3315 fattr->valid |= status;
3317 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3318 struct nfs4_fs_locations,
3322 fattr->valid |= status;
3324 status = decode_attr_mode(xdr, bitmap, &fmode);
3328 fattr->mode |= fmode;
3329 fattr->valid |= status;
3332 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3335 fattr->valid |= status;
3337 status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid);
3340 fattr->valid |= status;
3342 status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid);
3345 fattr->valid |= status;
3347 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3350 fattr->valid |= status;
3352 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3355 fattr->valid |= status;
3357 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3360 fattr->valid |= status;
3362 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3365 fattr->valid |= status;
3367 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3370 fattr->valid |= status;
3372 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3375 if (status != 0 && !(fattr->valid & status)) {
3376 fattr->fileid = fileid;
3377 fattr->valid |= status;
3380 status = verify_attr_len(xdr, savep, attrlen);
3382 dprintk("%s: xdr returned %d\n", __func__, -status);
3387 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3390 uint32_t attrlen, bitmap[2];
3393 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3395 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3397 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3400 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3402 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3404 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3406 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3408 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3409 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3411 fsinfo->wtpref = fsinfo->wtmax;
3413 status = verify_attr_len(xdr, savep, attrlen);
3415 dprintk("%s: xdr returned %d!\n", __func__, -status);
3419 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3425 /* Zero handle first to allow comparisons */
3426 memset(fh, 0, sizeof(*fh));
3428 status = decode_op_hdr(xdr, OP_GETFH);
3434 if (len > NFS4_FHSIZE)
3438 COPYMEM(fh->data, len);
3442 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3446 status = decode_op_hdr(xdr, OP_LINK);
3449 return decode_change_info(xdr, cinfo);
3453 * We create the owner, so we know a proper owner.id length is 4.
3455 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3457 uint64_t offset, length, clientid;
3459 uint32_t namelen, type;
3466 fl->fl_start = (loff_t)offset;
3467 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3468 if (length == ~(uint64_t)0)
3469 fl->fl_end = OFFSET_MAX;
3470 fl->fl_type = F_WRLCK;
3472 fl->fl_type = F_RDLCK;
3478 return -NFS4ERR_DENIED;
3481 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3486 status = decode_op_hdr(xdr, OP_LOCK);
3490 READ_BUF(NFS4_STATEID_SIZE);
3491 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3492 } else if (status == -NFS4ERR_DENIED)
3493 status = decode_lock_denied(xdr, NULL);
3494 if (res->open_seqid != NULL)
3495 nfs_increment_open_seqid(status, res->open_seqid);
3496 nfs_increment_lock_seqid(status, res->lock_seqid);
3501 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3504 status = decode_op_hdr(xdr, OP_LOCKT);
3505 if (status == -NFS4ERR_DENIED)
3506 return decode_lock_denied(xdr, res->denied);
3510 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3515 status = decode_op_hdr(xdr, OP_LOCKU);
3517 nfs_increment_lock_seqid(status, res->seqid);
3519 READ_BUF(NFS4_STATEID_SIZE);
3520 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3525 static int decode_lookup(struct xdr_stream *xdr)
3527 return decode_op_hdr(xdr, OP_LOOKUP);
3530 /* This is too sick! */
3531 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3534 uint32_t limit_type, nblocks, blocksize;
3538 switch (limit_type) {
3545 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3550 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3553 uint32_t delegation_type;
3556 READ32(delegation_type);
3557 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3558 res->delegation_type = 0;
3561 READ_BUF(NFS4_STATEID_SIZE+4);
3562 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
3563 READ32(res->do_recall);
3565 switch (delegation_type) {
3566 case NFS4_OPEN_DELEGATE_READ:
3567 res->delegation_type = FMODE_READ;
3569 case NFS4_OPEN_DELEGATE_WRITE:
3570 res->delegation_type = FMODE_WRITE|FMODE_READ;
3571 if (decode_space_limit(xdr, &res->maxsize) < 0)
3574 return decode_ace(xdr, NULL, res->server->nfs_client);
3577 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3580 uint32_t savewords, bmlen, i;
3583 status = decode_op_hdr(xdr, OP_OPEN);
3585 nfs_increment_open_seqid(status, res->seqid);
3588 READ_BUF(NFS4_STATEID_SIZE);
3589 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3591 decode_change_info(xdr, &res->cinfo);
3594 READ32(res->rflags);
3599 READ_BUF(bmlen << 2);
3600 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3601 for (i = 0; i < savewords; ++i)
3602 READ32(res->attrset[i]);
3603 for (; i < NFS4_BITMAP_SIZE; i++)
3604 res->attrset[i] = 0;
3606 return decode_delegation(xdr, res);
3608 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
3612 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3617 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3619 nfs_increment_open_seqid(status, res->seqid);
3622 READ_BUF(NFS4_STATEID_SIZE);
3623 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3627 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3632 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3634 nfs_increment_open_seqid(status, res->seqid);
3637 READ_BUF(NFS4_STATEID_SIZE);
3638 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3642 static int decode_putfh(struct xdr_stream *xdr)
3644 return decode_op_hdr(xdr, OP_PUTFH);
3647 static int decode_putrootfh(struct xdr_stream *xdr)
3649 return decode_op_hdr(xdr, OP_PUTROOTFH);
3652 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3654 struct kvec *iov = req->rq_rcv_buf.head;
3656 uint32_t count, eof, recvd, hdrlen;
3659 status = decode_op_hdr(xdr, OP_READ);
3665 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3666 recvd = req->rq_rcv_buf.len - hdrlen;
3667 if (count > recvd) {
3668 dprintk("NFS: server cheating in read reply: "
3669 "count %u > recvd %u\n", count, recvd);
3673 xdr_read_pages(xdr, count);
3679 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3681 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3682 struct page *page = *rcvbuf->pages;
3683 struct kvec *iov = rcvbuf->head;
3685 u32 recvd, pglen = rcvbuf->page_len;
3686 __be32 *end, *entry, *p, *kaddr;
3687 unsigned int nr = 0;
3690 status = decode_op_hdr(xdr, OP_READDIR);
3694 COPYMEM(readdir->verifier.data, 8);
3695 dprintk("%s: verifier = %08x:%08x\n",
3697 ((u32 *)readdir->verifier.data)[0],
3698 ((u32 *)readdir->verifier.data)[1]);
3701 hdrlen = (char *) p - (char *) iov->iov_base;
3702 recvd = rcvbuf->len - hdrlen;
3705 xdr_read_pages(xdr, pglen);
3707 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3708 kaddr = p = kmap_atomic(page, KM_USER0);
3709 end = p + ((pglen + readdir->pgbase) >> 2);
3712 /* Make sure the packet actually has a value_follows and EOF entry */
3713 if ((entry + 1) > end)
3716 for (; *p++; nr++) {
3717 u32 len, attrlen, xlen;
3720 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3721 p += 2; /* cookie */
3722 len = ntohl(*p++); /* filename length */
3723 if (len > NFS4_MAXNAMLEN) {
3724 dprintk("NFS: giant filename in readdir (len 0x%x)\n",
3728 xlen = XDR_QUADLEN(len);
3729 if (end - p < xlen + 1)
3731 dprintk("filename = %*s\n", len, (char *)p);
3733 len = ntohl(*p++); /* bitmap length */
3734 if (end - p < len + 1)
3737 attrlen = XDR_QUADLEN(ntohl(*p++));
3738 if (end - p < attrlen + 2)
3740 p += attrlen; /* attributes */
3744 * Apparently some server sends responses that are a valid size, but
3745 * contain no entries, and have value_follows==0 and EOF==0. For
3746 * those, just set the EOF marker.
3748 if (!nr && entry[1] == 0) {
3749 dprintk("NFS: readdir reply truncated!\n");
3753 kunmap_atomic(kaddr, KM_USER0);
3757 * When we get a short packet there are 2 possibilities. We can
3758 * return an error, or fix up the response to look like a valid
3759 * response and return what we have so far. If there are no
3760 * entries and the packet was short, then return -EIO. If there
3761 * are valid entries in the response, return them and pretend that
3762 * the call was successful, but incomplete. The caller can retry the
3763 * readdir starting at the last cookie.
3765 dprintk("%s: short packet at entry %d\n", __func__, nr);
3766 entry[0] = entry[1] = 0;
3770 kunmap_atomic(kaddr, KM_USER0);
3771 return -errno_NFSERR_IO;
3774 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3776 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3777 struct kvec *iov = rcvbuf->head;
3784 status = decode_op_hdr(xdr, OP_READLINK);
3788 /* Convert length of symlink */
3791 if (len >= rcvbuf->page_len || len <= 0) {
3792 dprintk("nfs: server returned giant symlink!\n");
3793 return -ENAMETOOLONG;
3795 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3796 recvd = req->rq_rcv_buf.len - hdrlen;
3798 dprintk("NFS: server cheating in readlink reply: "
3799 "count %u > recvd %u\n", len, recvd);
3802 xdr_read_pages(xdr, len);
3804 * The XDR encode routine has set things up so that
3805 * the link text will be copied directly into the
3806 * buffer. We just have to do overflow-checking,
3807 * and and null-terminate the text (the VFS expects
3808 * null-termination).
3810 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3811 kaddr[len+rcvbuf->page_base] = '\0';
3812 kunmap_atomic(kaddr, KM_USER0);
3816 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3820 status = decode_op_hdr(xdr, OP_REMOVE);
3823 status = decode_change_info(xdr, cinfo);
3828 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3829 struct nfs4_change_info *new_cinfo)
3833 status = decode_op_hdr(xdr, OP_RENAME);
3836 if ((status = decode_change_info(xdr, old_cinfo)))
3838 status = decode_change_info(xdr, new_cinfo);
3843 static int decode_renew(struct xdr_stream *xdr)
3845 return decode_op_hdr(xdr, OP_RENEW);
3849 decode_restorefh(struct xdr_stream *xdr)
3851 return decode_op_hdr(xdr, OP_RESTOREFH);
3854 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3860 struct kvec *iov = req->rq_rcv_buf.head;
3864 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3866 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3868 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3871 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3873 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3877 /* We ignore &savep and don't do consistency checks on
3878 * the attr length. Let userspace figure it out.... */
3879 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3880 recvd = req->rq_rcv_buf.len - hdrlen;
3881 if (attrlen > recvd) {
3882 dprintk("NFS: server cheating in getattr"
3883 " acl reply: attrlen %u > recvd %u\n",
3887 xdr_read_pages(xdr, attrlen);
3890 status = -EOPNOTSUPP;
3897 decode_savefh(struct xdr_stream *xdr)
3899 return decode_op_hdr(xdr, OP_SAVEFH);
3902 static int decode_setattr(struct xdr_stream *xdr)
3908 status = decode_op_hdr(xdr, OP_SETATTR);
3913 READ_BUF(bmlen << 2);
3917 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
3925 if (opnum != OP_SETCLIENTID) {
3926 dprintk("nfs: decode_setclientid: Server returned operation"
3931 if (nfserr == NFS_OK) {
3932 READ_BUF(8 + NFS4_VERIFIER_SIZE);
3933 READ64(clp->cl_clientid);
3934 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
3935 } else if (nfserr == NFSERR_CLID_INUSE) {
3938 /* skip netid string */
3943 /* skip uaddr string */
3947 return -NFSERR_CLID_INUSE;
3949 return nfs4_stat_to_errno(nfserr);
3954 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3956 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3959 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3964 status = decode_op_hdr(xdr, OP_WRITE);
3970 READ32(res->verf->committed);
3971 COPYMEM(res->verf->verifier, 8);
3975 static int decode_delegreturn(struct xdr_stream *xdr)
3977 return decode_op_hdr(xdr, OP_DELEGRETURN);
3980 #if defined(CONFIG_NFS_V4_1)
3981 static int decode_exchange_id(struct xdr_stream *xdr,
3982 struct nfs41_exchange_id_res *res)
3987 struct nfs_client *clp = res->client;
3989 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
3994 READ64(clp->cl_ex_clid);
3996 READ32(clp->cl_seqid);
3997 READ32(clp->cl_exchange_flags);
3999 /* We ask for SP4_NONE */
4001 if (dummy != SP4_NONE)
4004 /* Throw away minor_id */
4007 /* Throw away Major id */
4012 /* Throw away server_scope */
4017 /* Throw away Implementation id array */
4024 #endif /* CONFIG_NFS_V4_1 */
4026 static int decode_sequence(struct xdr_stream *xdr,
4027 struct nfs4_sequence_res *res,
4028 struct rpc_rqst *rqstp)
4030 #if defined(CONFIG_NFS_V4_1)
4031 if (!res->sr_session)
4035 #endif /* CONFIG_NFS_V4_1 */
4041 * END OF "GENERIC" DECODE ROUTINES.
4045 * Decode OPEN_DOWNGRADE response
4047 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4049 struct xdr_stream xdr;
4050 struct compound_hdr hdr;
4053 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4054 status = decode_compound_hdr(&xdr, &hdr);
4057 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4060 status = decode_putfh(&xdr);
4063 status = decode_open_downgrade(&xdr, res);
4066 decode_getfattr(&xdr, res->fattr, res->server);
4072 * Decode ACCESS response
4074 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
4076 struct xdr_stream xdr;
4077 struct compound_hdr hdr;
4080 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4081 status = decode_compound_hdr(&xdr, &hdr);
4084 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4087 status = decode_putfh(&xdr);
4090 status = decode_access(&xdr, res);
4093 decode_getfattr(&xdr, res->fattr, res->server);
4099 * Decode LOOKUP response
4101 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4103 struct xdr_stream xdr;
4104 struct compound_hdr hdr;
4107 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4108 status = decode_compound_hdr(&xdr, &hdr);
4111 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4114 if ((status = decode_putfh(&xdr)) != 0)
4116 if ((status = decode_lookup(&xdr)) != 0)
4118 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4120 status = decode_getfattr(&xdr, res->fattr, res->server);
4126 * Decode LOOKUP_ROOT response
4128 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4130 struct xdr_stream xdr;
4131 struct compound_hdr hdr;
4134 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4135 status = decode_compound_hdr(&xdr, &hdr);
4138 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4141 if ((status = decode_putrootfh(&xdr)) != 0)
4143 if ((status = decode_getfh(&xdr, res->fh)) == 0)
4144 status = decode_getfattr(&xdr, res->fattr, res->server);
4150 * Decode REMOVE response
4152 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
4154 struct xdr_stream xdr;
4155 struct compound_hdr hdr;
4158 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4159 status = decode_compound_hdr(&xdr, &hdr);
4162 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4165 if ((status = decode_putfh(&xdr)) != 0)
4167 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
4169 decode_getfattr(&xdr, &res->dir_attr, res->server);
4175 * Decode RENAME response
4177 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
4179 struct xdr_stream xdr;
4180 struct compound_hdr hdr;
4183 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4184 status = decode_compound_hdr(&xdr, &hdr);
4187 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4190 if ((status = decode_putfh(&xdr)) != 0)
4192 if ((status = decode_savefh(&xdr)) != 0)
4194 if ((status = decode_putfh(&xdr)) != 0)
4196 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4198 /* Current FH is target directory */
4199 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
4201 if ((status = decode_restorefh(&xdr)) != 0)
4203 decode_getfattr(&xdr, res->old_fattr, res->server);
4209 * Decode LINK response
4211 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4213 struct xdr_stream xdr;
4214 struct compound_hdr hdr;
4217 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4218 status = decode_compound_hdr(&xdr, &hdr);
4221 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4224 if ((status = decode_putfh(&xdr)) != 0)
4226 if ((status = decode_savefh(&xdr)) != 0)
4228 if ((status = decode_putfh(&xdr)) != 0)
4230 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4233 * Note order: OP_LINK leaves the directory as the current
4236 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
4238 if ((status = decode_restorefh(&xdr)) != 0)
4240 decode_getfattr(&xdr, res->fattr, res->server);
4246 * Decode CREATE response
4248 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4250 struct xdr_stream xdr;
4251 struct compound_hdr hdr;
4254 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4255 status = decode_compound_hdr(&xdr, &hdr);
4258 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4261 if ((status = decode_putfh(&xdr)) != 0)
4263 if ((status = decode_savefh(&xdr)) != 0)
4265 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4267 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4269 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
4271 if ((status = decode_restorefh(&xdr)) != 0)
4273 decode_getfattr(&xdr, res->dir_fattr, res->server);
4279 * Decode SYMLINK response
4281 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4283 return nfs4_xdr_dec_create(rqstp, p, res);
4287 * Decode GETATTR response
4289 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
4291 struct xdr_stream xdr;
4292 struct compound_hdr hdr;
4295 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4296 status = decode_compound_hdr(&xdr, &hdr);
4299 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4302 status = decode_putfh(&xdr);
4305 status = decode_getfattr(&xdr, res->fattr, res->server);
4311 * Encode an SETACL request
4314 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
4316 struct xdr_stream xdr;
4317 struct compound_hdr hdr = {
4318 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
4322 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
4323 encode_compound_hdr(&xdr, req, &hdr);
4324 encode_sequence(&xdr, &args->seq_args, &hdr);
4325 encode_putfh(&xdr, args->fh, &hdr);
4326 status = encode_setacl(&xdr, args, &hdr);
4332 * Decode SETACL response
4335 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
4336 struct nfs_setaclres *res)
4338 struct xdr_stream xdr;
4339 struct compound_hdr hdr;
4342 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4343 status = decode_compound_hdr(&xdr, &hdr);
4346 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4349 status = decode_putfh(&xdr);
4352 status = decode_setattr(&xdr);
4358 * Decode GETACL response
4361 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
4362 struct nfs_getaclres *res)
4364 struct xdr_stream xdr;
4365 struct compound_hdr hdr;
4368 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4369 status = decode_compound_hdr(&xdr, &hdr);
4372 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4375 status = decode_putfh(&xdr);
4378 status = decode_getacl(&xdr, rqstp, &res->acl_len);
4385 * Decode CLOSE response
4387 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4389 struct xdr_stream xdr;
4390 struct compound_hdr hdr;
4393 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4394 status = decode_compound_hdr(&xdr, &hdr);
4397 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4400 status = decode_putfh(&xdr);
4403 status = decode_close(&xdr, res);
4407 * Note: Server may do delete on close for this file
4408 * in which case the getattr call will fail with
4409 * an ESTALE error. Shouldn't be a problem,
4410 * though, since fattr->valid will remain unset.
4412 decode_getfattr(&xdr, res->fattr, res->server);
4418 * Decode OPEN response
4420 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4422 struct xdr_stream xdr;
4423 struct compound_hdr hdr;
4426 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4427 status = decode_compound_hdr(&xdr, &hdr);
4430 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4433 status = decode_putfh(&xdr);
4436 status = decode_savefh(&xdr);
4439 status = decode_open(&xdr, res);
4442 if (decode_getfh(&xdr, &res->fh) != 0)
4444 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4446 if (decode_restorefh(&xdr) != 0)
4448 decode_getfattr(&xdr, res->dir_attr, res->server);
4454 * Decode OPEN_CONFIRM response
4456 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
4458 struct xdr_stream xdr;
4459 struct compound_hdr hdr;
4462 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4463 status = decode_compound_hdr(&xdr, &hdr);
4466 status = decode_putfh(&xdr);
4469 status = decode_open_confirm(&xdr, res);
4475 * Decode OPEN response
4477 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4479 struct xdr_stream xdr;
4480 struct compound_hdr hdr;
4483 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4484 status = decode_compound_hdr(&xdr, &hdr);
4487 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4490 status = decode_putfh(&xdr);
4493 status = decode_open(&xdr, res);
4496 decode_getfattr(&xdr, res->f_attr, res->server);
4502 * Decode SETATTR response
4504 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4506 struct xdr_stream xdr;
4507 struct compound_hdr hdr;
4510 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4511 status = decode_compound_hdr(&xdr, &hdr);
4514 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4517 status = decode_putfh(&xdr);
4520 status = decode_setattr(&xdr);
4523 decode_getfattr(&xdr, res->fattr, res->server);
4529 * Decode LOCK response
4531 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4533 struct xdr_stream xdr;
4534 struct compound_hdr hdr;
4537 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4538 status = decode_compound_hdr(&xdr, &hdr);
4541 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4544 status = decode_putfh(&xdr);
4547 status = decode_lock(&xdr, res);
4553 * Decode LOCKT response
4555 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
4557 struct xdr_stream xdr;
4558 struct compound_hdr hdr;
4561 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4562 status = decode_compound_hdr(&xdr, &hdr);
4565 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4568 status = decode_putfh(&xdr);
4571 status = decode_lockt(&xdr, res);
4577 * Decode LOCKU response
4579 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
4581 struct xdr_stream xdr;
4582 struct compound_hdr hdr;
4585 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4586 status = decode_compound_hdr(&xdr, &hdr);
4589 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4592 status = decode_putfh(&xdr);
4595 status = decode_locku(&xdr, res);
4601 * Decode READLINK response
4603 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
4604 struct nfs4_readlink_res *res)
4606 struct xdr_stream xdr;
4607 struct compound_hdr hdr;
4610 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4611 status = decode_compound_hdr(&xdr, &hdr);
4614 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4617 status = decode_putfh(&xdr);
4620 status = decode_readlink(&xdr, rqstp);
4626 * Decode READDIR response
4628 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
4630 struct xdr_stream xdr;
4631 struct compound_hdr hdr;
4634 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4635 status = decode_compound_hdr(&xdr, &hdr);
4638 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4641 status = decode_putfh(&xdr);
4644 status = decode_readdir(&xdr, rqstp, res);
4650 * Decode Read response
4652 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
4654 struct xdr_stream xdr;
4655 struct compound_hdr hdr;
4658 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4659 status = decode_compound_hdr(&xdr, &hdr);
4662 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4665 status = decode_putfh(&xdr);
4668 status = decode_read(&xdr, rqstp, res);
4670 status = res->count;
4676 * Decode WRITE response
4678 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4680 struct xdr_stream xdr;
4681 struct compound_hdr hdr;
4684 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4685 status = decode_compound_hdr(&xdr, &hdr);
4688 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4691 status = decode_putfh(&xdr);
4694 status = decode_write(&xdr, res);
4697 decode_getfattr(&xdr, res->fattr, res->server);
4699 status = res->count;
4705 * Decode COMMIT response
4707 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4709 struct xdr_stream xdr;
4710 struct compound_hdr hdr;
4713 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4714 status = decode_compound_hdr(&xdr, &hdr);
4717 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4720 status = decode_putfh(&xdr);
4723 status = decode_commit(&xdr, res);
4726 decode_getfattr(&xdr, res->fattr, res->server);
4734 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
4735 struct nfs4_fsinfo_res *res)
4737 struct xdr_stream xdr;
4738 struct compound_hdr hdr;
4741 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4742 status = decode_compound_hdr(&xdr, &hdr);
4744 status = decode_sequence(&xdr, &res->seq_res, req);
4746 status = decode_putfh(&xdr);
4748 status = decode_fsinfo(&xdr, res->fsinfo);
4755 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
4756 struct nfs4_pathconf_res *res)
4758 struct xdr_stream xdr;
4759 struct compound_hdr hdr;
4762 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4763 status = decode_compound_hdr(&xdr, &hdr);
4765 status = decode_sequence(&xdr, &res->seq_res, req);
4767 status = decode_putfh(&xdr);
4769 status = decode_pathconf(&xdr, res->pathconf);
4776 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
4777 struct nfs4_statfs_res *res)
4779 struct xdr_stream xdr;
4780 struct compound_hdr hdr;
4783 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4784 status = decode_compound_hdr(&xdr, &hdr);
4786 status = decode_sequence(&xdr, &res->seq_res, req);
4788 status = decode_putfh(&xdr);
4790 status = decode_statfs(&xdr, res->fsstat);
4795 * GETATTR_BITMAP request
4797 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
4799 struct xdr_stream xdr;
4800 struct compound_hdr hdr;
4803 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4804 status = decode_compound_hdr(&xdr, &hdr);
4807 status = decode_sequence(&xdr, &res->seq_res, req);
4810 if ((status = decode_putfh(&xdr)) != 0)
4812 status = decode_server_caps(&xdr, res);
4818 * Decode RENEW response
4820 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
4822 struct xdr_stream xdr;
4823 struct compound_hdr hdr;
4826 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4827 status = decode_compound_hdr(&xdr, &hdr);
4829 status = decode_renew(&xdr);
4834 * a SETCLIENTID request
4836 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
4837 struct nfs_client *clp)
4839 struct xdr_stream xdr;
4840 struct compound_hdr hdr;
4843 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4844 status = decode_compound_hdr(&xdr, &hdr);
4846 status = decode_setclientid(&xdr, clp);
4851 * a SETCLIENTID_CONFIRM request
4853 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4855 struct xdr_stream xdr;
4856 struct compound_hdr hdr;
4859 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4860 status = decode_compound_hdr(&xdr, &hdr);
4862 status = decode_setclientid_confirm(&xdr);
4864 status = decode_putrootfh(&xdr);
4866 status = decode_fsinfo(&xdr, fsinfo);
4871 * DELEGRETURN request
4873 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
4875 struct xdr_stream xdr;
4876 struct compound_hdr hdr;
4879 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4880 status = decode_compound_hdr(&xdr, &hdr);
4883 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4886 status = decode_putfh(&xdr);
4889 status = decode_delegreturn(&xdr);
4890 decode_getfattr(&xdr, res->fattr, res->server);
4896 * FS_LOCATIONS request
4898 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
4899 struct nfs4_fs_locations_res *res)
4901 struct xdr_stream xdr;
4902 struct compound_hdr hdr;
4905 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4906 status = decode_compound_hdr(&xdr, &hdr);
4909 status = decode_sequence(&xdr, &res->seq_res, req);
4912 if ((status = decode_putfh(&xdr)) != 0)
4914 if ((status = decode_lookup(&xdr)) != 0)
4916 xdr_enter_page(&xdr, PAGE_SIZE);
4917 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
4918 res->fs_locations->server);
4923 #if defined(CONFIG_NFS_V4_1)
4925 * EXCHANGE_ID request
4927 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
4930 struct xdr_stream xdr;
4931 struct compound_hdr hdr;
4934 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4935 status = decode_compound_hdr(&xdr, &hdr);
4937 status = decode_exchange_id(&xdr, res);
4942 * a GET_LEASE_TIME request
4944 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
4945 struct nfs4_get_lease_time_res *res)
4947 struct xdr_stream xdr;
4948 struct compound_hdr hdr;
4951 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4952 status = decode_compound_hdr(&xdr, &hdr);
4954 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
4956 status = decode_putrootfh(&xdr);
4958 status = decode_fsinfo(&xdr, res->lr_fsinfo);
4961 #endif /* CONFIG_NFS_V4_1 */
4963 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
4965 uint32_t bitmap[2] = {0};
4970 return ERR_PTR(-EAGAIN);
4972 return ERR_PTR(-EBADCOOKIE);
4975 entry->prev_cookie = entry->cookie;
4976 p = xdr_decode_hyper(p, &entry->cookie);
4977 entry->len = ntohl(*p++);
4978 entry->name = (const char *) p;
4979 p += XDR_QUADLEN(entry->len);
4982 * In case the server doesn't return an inode number,
4983 * we fake one here. (We don't use inode number 0,
4984 * since glibc seems to choke on it...)
4988 len = ntohl(*p++); /* bitmap length */
4990 bitmap[0] = ntohl(*p++);
4992 bitmap[1] = ntohl(*p++);
4996 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4998 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4999 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
5000 /* Ignore the return value of rdattr_error for now */
5004 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
5005 xdr_decode_hyper(p, &entry->ino);
5006 else if (bitmap[0] == FATTR4_WORD0_FILEID)
5007 xdr_decode_hyper(p, &entry->ino);
5011 entry->eof = !p[0] && p[1];
5016 * We need to translate between nfs status return values and
5017 * the local errno values which may not be the same.
5024 { NFS4ERR_PERM, -EPERM },
5025 { NFS4ERR_NOENT, -ENOENT },
5026 { NFS4ERR_IO, -errno_NFSERR_IO},
5027 { NFS4ERR_NXIO, -ENXIO },
5028 { NFS4ERR_ACCESS, -EACCES },
5029 { NFS4ERR_EXIST, -EEXIST },
5030 { NFS4ERR_XDEV, -EXDEV },
5031 { NFS4ERR_NOTDIR, -ENOTDIR },
5032 { NFS4ERR_ISDIR, -EISDIR },
5033 { NFS4ERR_INVAL, -EINVAL },
5034 { NFS4ERR_FBIG, -EFBIG },
5035 { NFS4ERR_NOSPC, -ENOSPC },
5036 { NFS4ERR_ROFS, -EROFS },
5037 { NFS4ERR_MLINK, -EMLINK },
5038 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
5039 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
5040 { NFS4ERR_DQUOT, -EDQUOT },
5041 { NFS4ERR_STALE, -ESTALE },
5042 { NFS4ERR_BADHANDLE, -EBADHANDLE },
5043 { NFS4ERR_BADOWNER, -EINVAL },
5044 { NFS4ERR_BADNAME, -EINVAL },
5045 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
5046 { NFS4ERR_NOTSUPP, -ENOTSUPP },
5047 { NFS4ERR_TOOSMALL, -ETOOSMALL },
5048 { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
5049 { NFS4ERR_BADTYPE, -EBADTYPE },
5050 { NFS4ERR_LOCKED, -EAGAIN },
5051 { NFS4ERR_RESOURCE, -EREMOTEIO },
5052 { NFS4ERR_SYMLINK, -ELOOP },
5053 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
5054 { NFS4ERR_DEADLOCK, -EDEADLK },
5055 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
5056 * to be handled by a
5063 * Convert an NFS error code to a local one.
5064 * This one is used jointly by NFSv2 and NFSv3.
5067 nfs4_stat_to_errno(int stat)
5070 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
5071 if (nfs_errtbl[i].stat == stat)
5072 return nfs_errtbl[i].errno;
5074 if (stat <= 10000 || stat > 10100) {
5075 /* The server is looney tunes. */
5076 return -ESERVERFAULT;
5078 /* If we cannot translate the error, the recovery routines should
5080 * Note: remaining NFSv4 error codes have values > 10000, so should
5081 * not conflict with native Linux error codes.
5086 #define PROC(proc, argtype, restype) \
5087 [NFSPROC4_CLNT_##proc] = { \
5088 .p_proc = NFSPROC4_COMPOUND, \
5089 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
5090 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
5091 .p_arglen = NFS4_##argtype##_sz, \
5092 .p_replen = NFS4_##restype##_sz, \
5093 .p_statidx = NFSPROC4_CLNT_##proc, \
5097 struct rpc_procinfo nfs4_procedures[] = {
5098 PROC(READ, enc_read, dec_read),
5099 PROC(WRITE, enc_write, dec_write),
5100 PROC(COMMIT, enc_commit, dec_commit),
5101 PROC(OPEN, enc_open, dec_open),
5102 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
5103 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
5104 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
5105 PROC(CLOSE, enc_close, dec_close),
5106 PROC(SETATTR, enc_setattr, dec_setattr),
5107 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
5108 PROC(RENEW, enc_renew, dec_renew),
5109 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
5110 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
5111 PROC(LOCK, enc_lock, dec_lock),
5112 PROC(LOCKT, enc_lockt, dec_lockt),
5113 PROC(LOCKU, enc_locku, dec_locku),
5114 PROC(ACCESS, enc_access, dec_access),
5115 PROC(GETATTR, enc_getattr, dec_getattr),
5116 PROC(LOOKUP, enc_lookup, dec_lookup),
5117 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
5118 PROC(REMOVE, enc_remove, dec_remove),
5119 PROC(RENAME, enc_rename, dec_rename),
5120 PROC(LINK, enc_link, dec_link),
5121 PROC(SYMLINK, enc_symlink, dec_symlink),
5122 PROC(CREATE, enc_create, dec_create),
5123 PROC(PATHCONF, enc_pathconf, dec_pathconf),
5124 PROC(STATFS, enc_statfs, dec_statfs),
5125 PROC(READLINK, enc_readlink, dec_readlink),
5126 PROC(READDIR, enc_readdir, dec_readdir),
5127 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
5128 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
5129 PROC(GETACL, enc_getacl, dec_getacl),
5130 PROC(SETACL, enc_setacl, dec_setacl),
5131 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
5132 #if defined(CONFIG_NFS_V4_1)
5133 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
5134 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5135 #endif /* CONFIG_NFS_V4_1 */
5138 struct rpc_version nfs_version4 = {
5140 .nrprocs = ARRAY_SIZE(nfs4_procedures),
5141 .procs = nfs4_procedures