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/errno.h>
42 #include <linux/string.h>
44 #include <linux/pagemap.h>
45 #include <linux/proc_fs.h>
46 #include <linux/kdev_t.h>
47 #include <linux/sunrpc/clnt.h>
48 #include <linux/sunrpc/msg_prot.h>
49 #include <linux/nfs.h>
50 #include <linux/nfs4.h>
51 #include <linux/nfs_fs.h>
52 #include <linux/nfs_idmap.h>
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 + encode_verifier_maxsz)
139 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
140 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
141 #define encode_open_maxsz (op_encode_hdr_maxsz + \
142 2 + encode_share_access_maxsz + 2 + \
143 open_owner_id_maxsz + \
144 encode_opentype_maxsz + \
145 encode_claim_null_maxsz)
146 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
147 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
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_lockowner_maxsz (7)
206 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
208 1 + encode_stateid_maxsz + 1 + \
209 encode_lockowner_maxsz)
210 #define decode_lock_denied_maxsz \
211 (8 + decode_lockowner_maxsz)
212 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
213 decode_lock_denied_maxsz)
214 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
215 encode_lockowner_maxsz)
216 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
217 decode_lock_denied_maxsz)
218 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
219 encode_stateid_maxsz + \
221 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
222 decode_stateid_maxsz)
223 #define encode_release_lockowner_maxsz \
224 (op_encode_hdr_maxsz + \
225 encode_lockowner_maxsz)
226 #define decode_release_lockowner_maxsz \
227 (op_decode_hdr_maxsz)
228 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
229 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
230 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
231 1 + nfs4_name_maxsz + \
234 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
235 #define encode_create_maxsz (op_encode_hdr_maxsz + \
236 1 + 2 + nfs4_name_maxsz + \
238 #define decode_create_maxsz (op_decode_hdr_maxsz + \
239 decode_change_info_maxsz + \
240 nfs4_fattr_bitmap_maxsz)
241 #define encode_statfs_maxsz (encode_getattr_maxsz)
242 #define decode_statfs_maxsz (decode_getattr_maxsz)
243 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
244 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
245 #define encode_getacl_maxsz (encode_getattr_maxsz)
246 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
247 nfs4_fattr_bitmap_maxsz + 1)
248 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
249 encode_stateid_maxsz + 3)
250 #define decode_setacl_maxsz (decode_setattr_maxsz)
251 #define encode_fs_locations_maxsz \
252 (encode_getattr_maxsz)
253 #define decode_fs_locations_maxsz \
256 #if defined(CONFIG_NFS_V4_1)
257 #define NFS4_MAX_MACHINE_NAME_LEN (64)
259 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
260 encode_verifier_maxsz + \
261 1 /* co_ownerid.len */ + \
262 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
265 0 /* SP4_NONE (for now) */ + \
266 1 /* zero implemetation id array */)
267 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
268 2 /* eir_clientid */ + \
269 1 /* eir_sequenceid */ + \
270 1 /* eir_flags */ + \
272 0 /* SP4_NONE (for now) */ + \
273 2 /* eir_server_owner.so_minor_id */ + \
274 /* eir_server_owner.so_major_id<> */ \
275 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
276 /* eir_server_scope<> */ \
277 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
278 1 /* eir_server_impl_id array length */ + \
279 0 /* ignored eir_server_impl_id contents */)
280 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
281 #define decode_channel_attrs_maxsz (6 + \
282 1 /* ca_rdma_ird.len */ + \
284 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
285 2 /* csa_clientid */ + \
286 1 /* csa_sequence */ + \
287 1 /* csa_flags */ + \
288 encode_channel_attrs_maxsz + \
289 encode_channel_attrs_maxsz + \
290 1 /* csa_cb_program */ + \
291 1 /* csa_sec_parms.len (1) */ + \
292 1 /* cb_secflavor (AUTH_SYS) */ + \
294 1 /* machinename.len */ + \
295 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
298 1 /* gids.len (0) */)
299 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
300 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
301 1 /* csr_sequence */ + \
302 1 /* csr_flags */ + \
303 decode_channel_attrs_maxsz + \
304 decode_channel_attrs_maxsz)
305 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
306 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
307 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
308 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
309 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
310 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
311 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
312 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
313 #else /* CONFIG_NFS_V4_1 */
314 #define encode_sequence_maxsz 0
315 #define decode_sequence_maxsz 0
316 #endif /* CONFIG_NFS_V4_1 */
318 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
319 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
320 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
321 encode_sequence_maxsz + \
322 encode_putfh_maxsz + \
324 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
325 decode_sequence_maxsz + \
326 decode_putfh_maxsz + \
328 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
329 encode_sequence_maxsz + \
330 encode_putfh_maxsz + \
331 encode_readlink_maxsz)
332 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
333 decode_sequence_maxsz + \
334 decode_putfh_maxsz + \
335 decode_readlink_maxsz)
336 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
337 encode_sequence_maxsz + \
338 encode_putfh_maxsz + \
339 encode_readdir_maxsz)
340 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
341 decode_sequence_maxsz + \
342 decode_putfh_maxsz + \
343 decode_readdir_maxsz)
344 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
345 encode_sequence_maxsz + \
346 encode_putfh_maxsz + \
347 encode_write_maxsz + \
348 encode_getattr_maxsz)
349 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
350 decode_sequence_maxsz + \
351 decode_putfh_maxsz + \
352 decode_write_maxsz + \
353 decode_getattr_maxsz)
354 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
355 encode_sequence_maxsz + \
356 encode_putfh_maxsz + \
357 encode_commit_maxsz + \
358 encode_getattr_maxsz)
359 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
360 decode_sequence_maxsz + \
361 decode_putfh_maxsz + \
362 decode_commit_maxsz + \
363 decode_getattr_maxsz)
364 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
365 encode_sequence_maxsz + \
366 encode_putfh_maxsz + \
367 encode_savefh_maxsz + \
368 encode_open_maxsz + \
369 encode_getfh_maxsz + \
370 encode_getattr_maxsz + \
371 encode_restorefh_maxsz + \
372 encode_getattr_maxsz)
373 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
374 decode_sequence_maxsz + \
375 decode_putfh_maxsz + \
376 decode_savefh_maxsz + \
377 decode_open_maxsz + \
378 decode_getfh_maxsz + \
379 decode_getattr_maxsz + \
380 decode_restorefh_maxsz + \
381 decode_getattr_maxsz)
382 #define NFS4_enc_open_confirm_sz \
383 (compound_encode_hdr_maxsz + \
384 encode_putfh_maxsz + \
385 encode_open_confirm_maxsz)
386 #define NFS4_dec_open_confirm_sz \
387 (compound_decode_hdr_maxsz + \
388 decode_putfh_maxsz + \
389 decode_open_confirm_maxsz)
390 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
391 encode_sequence_maxsz + \
392 encode_putfh_maxsz + \
393 encode_open_maxsz + \
394 encode_getattr_maxsz)
395 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
396 decode_sequence_maxsz + \
397 decode_putfh_maxsz + \
398 decode_open_maxsz + \
399 decode_getattr_maxsz)
400 #define NFS4_enc_open_downgrade_sz \
401 (compound_encode_hdr_maxsz + \
402 encode_sequence_maxsz + \
403 encode_putfh_maxsz + \
404 encode_open_downgrade_maxsz + \
405 encode_getattr_maxsz)
406 #define NFS4_dec_open_downgrade_sz \
407 (compound_decode_hdr_maxsz + \
408 decode_sequence_maxsz + \
409 decode_putfh_maxsz + \
410 decode_open_downgrade_maxsz + \
411 decode_getattr_maxsz)
412 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
413 encode_sequence_maxsz + \
414 encode_putfh_maxsz + \
415 encode_close_maxsz + \
416 encode_getattr_maxsz)
417 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
418 decode_sequence_maxsz + \
419 decode_putfh_maxsz + \
420 decode_close_maxsz + \
421 decode_getattr_maxsz)
422 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
423 encode_sequence_maxsz + \
424 encode_putfh_maxsz + \
425 encode_setattr_maxsz + \
426 encode_getattr_maxsz)
427 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
428 decode_sequence_maxsz + \
429 decode_putfh_maxsz + \
430 decode_setattr_maxsz + \
431 decode_getattr_maxsz)
432 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
433 encode_sequence_maxsz + \
434 encode_putfh_maxsz + \
436 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
437 decode_sequence_maxsz + \
438 decode_putfh_maxsz + \
440 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
442 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
444 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
445 encode_setclientid_maxsz)
446 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
447 decode_setclientid_maxsz)
448 #define NFS4_enc_setclientid_confirm_sz \
449 (compound_encode_hdr_maxsz + \
450 encode_setclientid_confirm_maxsz + \
451 encode_putrootfh_maxsz + \
453 #define NFS4_dec_setclientid_confirm_sz \
454 (compound_decode_hdr_maxsz + \
455 decode_setclientid_confirm_maxsz + \
456 decode_putrootfh_maxsz + \
458 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
459 encode_sequence_maxsz + \
460 encode_putfh_maxsz + \
462 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
463 decode_sequence_maxsz + \
464 decode_putfh_maxsz + \
466 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
467 encode_sequence_maxsz + \
468 encode_putfh_maxsz + \
470 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
471 decode_sequence_maxsz + \
472 decode_putfh_maxsz + \
474 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
475 encode_sequence_maxsz + \
476 encode_putfh_maxsz + \
478 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
479 decode_sequence_maxsz + \
480 decode_putfh_maxsz + \
482 #define NFS4_enc_release_lockowner_sz \
483 (compound_encode_hdr_maxsz + \
484 encode_lockowner_maxsz)
485 #define NFS4_dec_release_lockowner_sz \
486 (compound_decode_hdr_maxsz + \
487 decode_lockowner_maxsz)
488 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
489 encode_sequence_maxsz + \
490 encode_putfh_maxsz + \
491 encode_access_maxsz + \
492 encode_getattr_maxsz)
493 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
494 decode_sequence_maxsz + \
495 decode_putfh_maxsz + \
496 decode_access_maxsz + \
497 decode_getattr_maxsz)
498 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
499 encode_sequence_maxsz + \
500 encode_putfh_maxsz + \
501 encode_getattr_maxsz)
502 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
503 decode_sequence_maxsz + \
504 decode_putfh_maxsz + \
505 decode_getattr_maxsz)
506 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
507 encode_sequence_maxsz + \
508 encode_putfh_maxsz + \
509 encode_lookup_maxsz + \
510 encode_getattr_maxsz + \
512 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
513 decode_sequence_maxsz + \
514 decode_putfh_maxsz + \
515 decode_lookup_maxsz + \
516 decode_getattr_maxsz + \
518 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
519 encode_sequence_maxsz + \
520 encode_putrootfh_maxsz + \
521 encode_getattr_maxsz + \
523 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
524 decode_sequence_maxsz + \
525 decode_putrootfh_maxsz + \
526 decode_getattr_maxsz + \
528 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
529 encode_sequence_maxsz + \
530 encode_putfh_maxsz + \
531 encode_remove_maxsz + \
532 encode_getattr_maxsz)
533 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
534 decode_sequence_maxsz + \
535 decode_putfh_maxsz + \
536 decode_remove_maxsz + \
537 decode_getattr_maxsz)
538 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
539 encode_sequence_maxsz + \
540 encode_putfh_maxsz + \
541 encode_savefh_maxsz + \
542 encode_putfh_maxsz + \
543 encode_rename_maxsz + \
544 encode_getattr_maxsz + \
545 encode_restorefh_maxsz + \
546 encode_getattr_maxsz)
547 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
548 decode_sequence_maxsz + \
549 decode_putfh_maxsz + \
550 decode_savefh_maxsz + \
551 decode_putfh_maxsz + \
552 decode_rename_maxsz + \
553 decode_getattr_maxsz + \
554 decode_restorefh_maxsz + \
555 decode_getattr_maxsz)
556 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
557 encode_sequence_maxsz + \
558 encode_putfh_maxsz + \
559 encode_savefh_maxsz + \
560 encode_putfh_maxsz + \
561 encode_link_maxsz + \
562 decode_getattr_maxsz + \
563 encode_restorefh_maxsz + \
564 decode_getattr_maxsz)
565 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
566 decode_sequence_maxsz + \
567 decode_putfh_maxsz + \
568 decode_savefh_maxsz + \
569 decode_putfh_maxsz + \
570 decode_link_maxsz + \
571 decode_getattr_maxsz + \
572 decode_restorefh_maxsz + \
573 decode_getattr_maxsz)
574 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
575 encode_sequence_maxsz + \
576 encode_putfh_maxsz + \
577 encode_symlink_maxsz + \
578 encode_getattr_maxsz + \
580 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
581 decode_sequence_maxsz + \
582 decode_putfh_maxsz + \
583 decode_symlink_maxsz + \
584 decode_getattr_maxsz + \
586 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
587 encode_sequence_maxsz + \
588 encode_putfh_maxsz + \
589 encode_savefh_maxsz + \
590 encode_create_maxsz + \
591 encode_getfh_maxsz + \
592 encode_getattr_maxsz + \
593 encode_restorefh_maxsz + \
594 encode_getattr_maxsz)
595 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_savefh_maxsz + \
599 decode_create_maxsz + \
600 decode_getfh_maxsz + \
601 decode_getattr_maxsz + \
602 decode_restorefh_maxsz + \
603 decode_getattr_maxsz)
604 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
605 encode_sequence_maxsz + \
606 encode_putfh_maxsz + \
607 encode_getattr_maxsz)
608 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_getattr_maxsz)
612 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
616 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
617 decode_sequence_maxsz + \
618 decode_putfh_maxsz + \
620 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
621 encode_sequence_maxsz + \
622 encode_putfh_maxsz + \
623 encode_getattr_maxsz)
624 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
625 decode_sequence_maxsz + \
626 decode_putfh_maxsz + \
627 decode_getattr_maxsz)
628 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
629 encode_sequence_maxsz + \
630 encode_putfh_maxsz + \
631 encode_delegreturn_maxsz + \
632 encode_getattr_maxsz)
633 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
634 decode_sequence_maxsz + \
635 decode_delegreturn_maxsz + \
636 decode_getattr_maxsz)
637 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
638 encode_sequence_maxsz + \
639 encode_putfh_maxsz + \
641 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
642 decode_sequence_maxsz + \
643 decode_putfh_maxsz + \
645 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
646 encode_sequence_maxsz + \
647 encode_putfh_maxsz + \
649 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
653 #define NFS4_enc_fs_locations_sz \
654 (compound_encode_hdr_maxsz + \
655 encode_sequence_maxsz + \
656 encode_putfh_maxsz + \
657 encode_lookup_maxsz + \
658 encode_fs_locations_maxsz)
659 #define NFS4_dec_fs_locations_sz \
660 (compound_decode_hdr_maxsz + \
661 decode_sequence_maxsz + \
662 decode_putfh_maxsz + \
663 decode_lookup_maxsz + \
664 decode_fs_locations_maxsz)
665 #if defined(CONFIG_NFS_V4_1)
666 #define NFS4_enc_exchange_id_sz \
667 (compound_encode_hdr_maxsz + \
668 encode_exchange_id_maxsz)
669 #define NFS4_dec_exchange_id_sz \
670 (compound_decode_hdr_maxsz + \
671 decode_exchange_id_maxsz)
672 #define NFS4_enc_create_session_sz \
673 (compound_encode_hdr_maxsz + \
674 encode_create_session_maxsz)
675 #define NFS4_dec_create_session_sz \
676 (compound_decode_hdr_maxsz + \
677 decode_create_session_maxsz)
678 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
679 encode_destroy_session_maxsz)
680 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
681 decode_destroy_session_maxsz)
682 #define NFS4_enc_sequence_sz \
683 (compound_decode_hdr_maxsz + \
684 encode_sequence_maxsz)
685 #define NFS4_dec_sequence_sz \
686 (compound_decode_hdr_maxsz + \
687 decode_sequence_maxsz)
688 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
689 encode_sequence_maxsz + \
690 encode_putrootfh_maxsz + \
692 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
693 decode_sequence_maxsz + \
694 decode_putrootfh_maxsz + \
696 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
697 encode_sequence_maxsz + \
698 encode_reclaim_complete_maxsz)
699 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
700 decode_sequence_maxsz + \
701 decode_reclaim_complete_maxsz)
703 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
704 compound_encode_hdr_maxsz +
705 encode_sequence_maxsz +
707 encode_getattr_maxsz) *
710 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
711 compound_decode_hdr_maxsz +
712 decode_sequence_maxsz +
713 decode_putfh_maxsz) *
715 #endif /* CONFIG_NFS_V4_1 */
717 static const umode_t nfs_type2fmt[] = {
724 [NF4SOCK] = S_IFSOCK,
730 struct compound_hdr {
736 uint32_t replen; /* expected reply words */
740 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
742 __be32 *p = xdr_reserve_space(xdr, nbytes);
747 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
751 p = xdr_reserve_space(xdr, 4 + len);
753 xdr_encode_opaque(p, str, len);
756 static void encode_compound_hdr(struct xdr_stream *xdr,
757 struct rpc_rqst *req,
758 struct compound_hdr *hdr)
761 struct rpc_auth *auth = req->rq_cred->cr_auth;
763 /* initialize running count of expected bytes in reply.
764 * NOTE: the replied tag SHOULD be the same is the one sent,
765 * but this is not required as a MUST for the server to do so. */
766 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
768 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
769 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
770 p = reserve_space(xdr, 4 + hdr->taglen + 8);
771 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
772 *p++ = cpu_to_be32(hdr->minorversion);
774 *p = cpu_to_be32(hdr->nops);
777 static void encode_nops(struct compound_hdr *hdr)
779 BUG_ON(hdr->nops > NFS4_MAX_OPS);
780 *hdr->nops_p = htonl(hdr->nops);
783 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
787 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
789 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
792 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
794 char owner_name[IDMAP_NAMESZ];
795 char owner_group[IDMAP_NAMESZ];
796 int owner_namelen = 0;
797 int owner_grouplen = 0;
805 * We reserve enough space to write the entire attribute buffer at once.
806 * In the worst-case, this would be
807 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
808 * = 36 bytes, plus any contribution from variable-length fields
809 * such as owner/group.
814 if (iap->ia_valid & ATTR_SIZE)
816 if (iap->ia_valid & ATTR_MODE)
818 if (iap->ia_valid & ATTR_UID) {
819 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name, IDMAP_NAMESZ);
820 if (owner_namelen < 0) {
821 dprintk("nfs: couldn't resolve uid %d to string\n",
824 strcpy(owner_name, "nobody");
825 owner_namelen = sizeof("nobody") - 1;
828 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
830 if (iap->ia_valid & ATTR_GID) {
831 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group, IDMAP_NAMESZ);
832 if (owner_grouplen < 0) {
833 dprintk("nfs: couldn't resolve gid %d to string\n",
835 strcpy(owner_group, "nobody");
836 owner_grouplen = sizeof("nobody") - 1;
839 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
841 if (iap->ia_valid & ATTR_ATIME_SET)
843 else if (iap->ia_valid & ATTR_ATIME)
845 if (iap->ia_valid & ATTR_MTIME_SET)
847 else if (iap->ia_valid & ATTR_MTIME)
849 p = reserve_space(xdr, len);
852 * We write the bitmap length now, but leave the bitmap and the attribute
853 * buffer length to be backfilled at the end of this routine.
855 *p++ = cpu_to_be32(2);
859 if (iap->ia_valid & ATTR_SIZE) {
860 bmval0 |= FATTR4_WORD0_SIZE;
861 p = xdr_encode_hyper(p, iap->ia_size);
863 if (iap->ia_valid & ATTR_MODE) {
864 bmval1 |= FATTR4_WORD1_MODE;
865 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
867 if (iap->ia_valid & ATTR_UID) {
868 bmval1 |= FATTR4_WORD1_OWNER;
869 p = xdr_encode_opaque(p, owner_name, owner_namelen);
871 if (iap->ia_valid & ATTR_GID) {
872 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
873 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
875 if (iap->ia_valid & ATTR_ATIME_SET) {
876 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
877 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
878 *p++ = cpu_to_be32(0);
879 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
880 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
882 else if (iap->ia_valid & ATTR_ATIME) {
883 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
884 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
886 if (iap->ia_valid & ATTR_MTIME_SET) {
887 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
888 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
889 *p++ = cpu_to_be32(0);
890 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
891 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
893 else if (iap->ia_valid & ATTR_MTIME) {
894 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
895 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
899 * Now we backfill the bitmap and the attribute buffer length.
901 if (len != ((char *)p - (char *)q) + 4) {
902 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
903 len, ((char *)p - (char *)q) + 4);
906 len = (char *)p - (char *)q - 12;
907 *q++ = htonl(bmval0);
908 *q++ = htonl(bmval1);
914 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
918 p = reserve_space(xdr, 8);
919 *p++ = cpu_to_be32(OP_ACCESS);
920 *p = cpu_to_be32(access);
922 hdr->replen += decode_access_maxsz;
925 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
929 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
930 *p++ = cpu_to_be32(OP_CLOSE);
931 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
932 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
934 hdr->replen += decode_close_maxsz;
937 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
941 p = reserve_space(xdr, 16);
942 *p++ = cpu_to_be32(OP_COMMIT);
943 p = xdr_encode_hyper(p, args->offset);
944 *p = cpu_to_be32(args->count);
946 hdr->replen += decode_commit_maxsz;
949 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
953 p = reserve_space(xdr, 8);
954 *p++ = cpu_to_be32(OP_CREATE);
955 *p = cpu_to_be32(create->ftype);
957 switch (create->ftype) {
959 p = reserve_space(xdr, 4);
960 *p = cpu_to_be32(create->u.symlink.len);
961 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
964 case NF4BLK: case NF4CHR:
965 p = reserve_space(xdr, 8);
966 *p++ = cpu_to_be32(create->u.device.specdata1);
967 *p = cpu_to_be32(create->u.device.specdata2);
974 encode_string(xdr, create->name->len, create->name->name);
976 hdr->replen += decode_create_maxsz;
978 encode_attrs(xdr, create->attrs, create->server);
981 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
985 p = reserve_space(xdr, 12);
986 *p++ = cpu_to_be32(OP_GETATTR);
987 *p++ = cpu_to_be32(1);
988 *p = cpu_to_be32(bitmap);
990 hdr->replen += decode_getattr_maxsz;
993 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
997 p = reserve_space(xdr, 16);
998 *p++ = cpu_to_be32(OP_GETATTR);
999 *p++ = cpu_to_be32(2);
1000 *p++ = cpu_to_be32(bm0);
1001 *p = cpu_to_be32(bm1);
1003 hdr->replen += decode_getattr_maxsz;
1006 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1008 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1009 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1012 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1014 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
1015 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
1018 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1020 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1021 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1024 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1028 p = reserve_space(xdr, 4);
1029 *p = cpu_to_be32(OP_GETFH);
1031 hdr->replen += decode_getfh_maxsz;
1034 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1038 p = reserve_space(xdr, 8 + name->len);
1039 *p++ = cpu_to_be32(OP_LINK);
1040 xdr_encode_opaque(p, name->name, name->len);
1042 hdr->replen += decode_link_maxsz;
1045 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1047 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1048 return block ? NFS4_READW_LT : NFS4_READ_LT;
1049 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1052 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1054 if (fl->fl_end == OFFSET_MAX)
1055 return ~(uint64_t)0;
1056 return fl->fl_end - fl->fl_start + 1;
1059 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1063 p = reserve_space(xdr, 28);
1064 p = xdr_encode_hyper(p, lowner->clientid);
1065 *p++ = cpu_to_be32(16);
1066 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1067 xdr_encode_hyper(p, lowner->id);
1071 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1072 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1074 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1078 p = reserve_space(xdr, 32);
1079 *p++ = cpu_to_be32(OP_LOCK);
1080 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1081 *p++ = cpu_to_be32(args->reclaim);
1082 p = xdr_encode_hyper(p, args->fl->fl_start);
1083 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1084 *p = cpu_to_be32(args->new_lock_owner);
1085 if (args->new_lock_owner){
1086 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1087 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1088 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1089 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1090 encode_lockowner(xdr, &args->lock_owner);
1093 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1094 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1095 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1098 hdr->replen += decode_lock_maxsz;
1101 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1105 p = reserve_space(xdr, 24);
1106 *p++ = cpu_to_be32(OP_LOCKT);
1107 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1108 p = xdr_encode_hyper(p, args->fl->fl_start);
1109 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1110 encode_lockowner(xdr, &args->lock_owner);
1112 hdr->replen += decode_lockt_maxsz;
1115 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1119 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1120 *p++ = cpu_to_be32(OP_LOCKU);
1121 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1122 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1123 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1124 p = xdr_encode_hyper(p, args->fl->fl_start);
1125 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1127 hdr->replen += decode_locku_maxsz;
1130 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1134 p = reserve_space(xdr, 4);
1135 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1136 encode_lockowner(xdr, lowner);
1138 hdr->replen += decode_release_lockowner_maxsz;
1141 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1143 int len = name->len;
1146 p = reserve_space(xdr, 8 + len);
1147 *p++ = cpu_to_be32(OP_LOOKUP);
1148 xdr_encode_opaque(p, name->name, len);
1150 hdr->replen += decode_lookup_maxsz;
1153 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1157 p = reserve_space(xdr, 8);
1158 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1160 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1163 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1165 case FMODE_READ|FMODE_WRITE:
1166 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1169 *p++ = cpu_to_be32(0);
1171 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1174 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1178 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1181 p = reserve_space(xdr, 8);
1182 *p++ = cpu_to_be32(OP_OPEN);
1183 *p = cpu_to_be32(arg->seqid->sequence->counter);
1184 encode_share_access(xdr, arg->fmode);
1185 p = reserve_space(xdr, 28);
1186 p = xdr_encode_hyper(p, arg->clientid);
1187 *p++ = cpu_to_be32(16);
1188 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1189 xdr_encode_hyper(p, arg->id);
1192 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1195 struct nfs_client *clp;
1197 p = reserve_space(xdr, 4);
1198 switch(arg->open_flags & O_EXCL) {
1200 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1201 encode_attrs(xdr, arg->u.attrs, arg->server);
1204 clp = arg->server->nfs_client;
1205 if (clp->cl_mvops->minor_version > 0) {
1206 if (nfs4_has_persistent_session(clp)) {
1207 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1208 encode_attrs(xdr, arg->u.attrs, arg->server);
1212 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1213 encode_nfs4_verifier(xdr, &arg->u.verifier);
1215 encode_attrs(xdr, &dummy, arg->server);
1218 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1219 encode_nfs4_verifier(xdr, &arg->u.verifier);
1224 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1228 p = reserve_space(xdr, 4);
1229 switch (arg->open_flags & O_CREAT) {
1231 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1234 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1235 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1236 encode_createmode(xdr, arg);
1240 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1244 p = reserve_space(xdr, 4);
1245 switch (delegation_type) {
1247 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1250 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1252 case FMODE_WRITE|FMODE_READ:
1253 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1260 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1264 p = reserve_space(xdr, 4);
1265 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1266 encode_string(xdr, name->len, name->name);
1269 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1273 p = reserve_space(xdr, 4);
1274 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1275 encode_delegation_type(xdr, type);
1278 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1282 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1283 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1284 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1285 encode_string(xdr, name->len, name->name);
1288 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1290 encode_openhdr(xdr, arg);
1291 encode_opentype(xdr, arg);
1292 switch (arg->claim) {
1293 case NFS4_OPEN_CLAIM_NULL:
1294 encode_claim_null(xdr, arg->name);
1296 case NFS4_OPEN_CLAIM_PREVIOUS:
1297 encode_claim_previous(xdr, arg->u.delegation_type);
1299 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1300 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1306 hdr->replen += decode_open_maxsz;
1309 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1313 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1314 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1315 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1316 *p = cpu_to_be32(arg->seqid->sequence->counter);
1318 hdr->replen += decode_open_confirm_maxsz;
1321 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1325 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1326 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1327 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1328 *p = cpu_to_be32(arg->seqid->sequence->counter);
1329 encode_share_access(xdr, arg->fmode);
1331 hdr->replen += decode_open_downgrade_maxsz;
1335 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1340 p = reserve_space(xdr, 8 + len);
1341 *p++ = cpu_to_be32(OP_PUTFH);
1342 xdr_encode_opaque(p, fh->data, len);
1344 hdr->replen += decode_putfh_maxsz;
1347 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1351 p = reserve_space(xdr, 4);
1352 *p = cpu_to_be32(OP_PUTROOTFH);
1354 hdr->replen += decode_putrootfh_maxsz;
1357 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx)
1359 nfs4_stateid stateid;
1362 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1363 if (ctx->state != NULL) {
1364 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
1365 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1367 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1370 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1374 p = reserve_space(xdr, 4);
1375 *p = cpu_to_be32(OP_READ);
1377 encode_stateid(xdr, args->context, args->lock_context);
1379 p = reserve_space(xdr, 12);
1380 p = xdr_encode_hyper(p, args->offset);
1381 *p = cpu_to_be32(args->count);
1383 hdr->replen += decode_read_maxsz;
1386 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1388 uint32_t attrs[2] = {
1389 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1390 FATTR4_WORD1_MOUNTED_ON_FILEID,
1394 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1395 *p++ = cpu_to_be32(OP_READDIR);
1396 p = xdr_encode_hyper(p, readdir->cookie);
1397 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1398 *p++ = cpu_to_be32(readdir->count >> 1); /* We're not doing readdirplus */
1399 *p++ = cpu_to_be32(readdir->count);
1400 *p++ = cpu_to_be32(2);
1401 /* Switch to mounted_on_fileid if the server supports it */
1402 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1403 attrs[0] &= ~FATTR4_WORD0_FILEID;
1405 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1406 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1407 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1409 hdr->replen += decode_readdir_maxsz;
1410 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1412 (unsigned long long)readdir->cookie,
1413 ((u32 *)readdir->verifier.data)[0],
1414 ((u32 *)readdir->verifier.data)[1],
1415 attrs[0] & readdir->bitmask[0],
1416 attrs[1] & readdir->bitmask[1]);
1419 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1423 p = reserve_space(xdr, 4);
1424 *p = cpu_to_be32(OP_READLINK);
1426 hdr->replen += decode_readlink_maxsz;
1429 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1433 p = reserve_space(xdr, 8 + name->len);
1434 *p++ = cpu_to_be32(OP_REMOVE);
1435 xdr_encode_opaque(p, name->name, name->len);
1437 hdr->replen += decode_remove_maxsz;
1440 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1444 p = reserve_space(xdr, 4);
1445 *p = cpu_to_be32(OP_RENAME);
1446 encode_string(xdr, oldname->len, oldname->name);
1447 encode_string(xdr, newname->len, newname->name);
1449 hdr->replen += decode_rename_maxsz;
1452 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1456 p = reserve_space(xdr, 12);
1457 *p++ = cpu_to_be32(OP_RENEW);
1458 xdr_encode_hyper(p, client_stateid->cl_clientid);
1460 hdr->replen += decode_renew_maxsz;
1464 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1468 p = reserve_space(xdr, 4);
1469 *p = cpu_to_be32(OP_RESTOREFH);
1471 hdr->replen += decode_restorefh_maxsz;
1475 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1479 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1480 *p++ = cpu_to_be32(OP_SETATTR);
1481 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1482 p = reserve_space(xdr, 2*4);
1483 *p++ = cpu_to_be32(1);
1484 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1485 if (arg->acl_len % 4)
1487 p = reserve_space(xdr, 4);
1488 *p = cpu_to_be32(arg->acl_len);
1489 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1491 hdr->replen += decode_setacl_maxsz;
1496 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1500 p = reserve_space(xdr, 4);
1501 *p = cpu_to_be32(OP_SAVEFH);
1503 hdr->replen += decode_savefh_maxsz;
1506 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1510 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1511 *p++ = cpu_to_be32(OP_SETATTR);
1512 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1514 hdr->replen += decode_setattr_maxsz;
1515 encode_attrs(xdr, arg->iap, server);
1518 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1522 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1523 *p++ = cpu_to_be32(OP_SETCLIENTID);
1524 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1526 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1527 p = reserve_space(xdr, 4);
1528 *p = cpu_to_be32(setclientid->sc_prog);
1529 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1530 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1531 p = reserve_space(xdr, 4);
1532 *p = cpu_to_be32(setclientid->sc_cb_ident);
1534 hdr->replen += decode_setclientid_maxsz;
1537 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1541 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1542 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1543 p = xdr_encode_hyper(p, arg->clientid);
1544 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
1546 hdr->replen += decode_setclientid_confirm_maxsz;
1549 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1553 p = reserve_space(xdr, 4);
1554 *p = cpu_to_be32(OP_WRITE);
1556 encode_stateid(xdr, args->context, args->lock_context);
1558 p = reserve_space(xdr, 16);
1559 p = xdr_encode_hyper(p, args->offset);
1560 *p++ = cpu_to_be32(args->stable);
1561 *p = cpu_to_be32(args->count);
1563 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1565 hdr->replen += decode_write_maxsz;
1568 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1572 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1574 *p++ = cpu_to_be32(OP_DELEGRETURN);
1575 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1577 hdr->replen += decode_delegreturn_maxsz;
1580 #if defined(CONFIG_NFS_V4_1)
1581 /* NFSv4.1 operations */
1582 static void encode_exchange_id(struct xdr_stream *xdr,
1583 struct nfs41_exchange_id_args *args,
1584 struct compound_hdr *hdr)
1588 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1589 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1590 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1592 encode_string(xdr, args->id_len, args->id);
1594 p = reserve_space(xdr, 12);
1595 *p++ = cpu_to_be32(args->flags);
1596 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1597 *p = cpu_to_be32(0); /* zero length implementation id array */
1599 hdr->replen += decode_exchange_id_maxsz;
1602 static void encode_create_session(struct xdr_stream *xdr,
1603 struct nfs41_create_session_args *args,
1604 struct compound_hdr *hdr)
1607 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1609 struct nfs_client *clp = args->client;
1610 u32 max_resp_sz_cached;
1613 * Assumes OPEN is the biggest non-idempotent compound.
1614 * 2 is the verifier.
1616 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1617 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1619 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1622 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1623 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1624 p = xdr_encode_hyper(p, clp->cl_ex_clid);
1625 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1626 *p++ = cpu_to_be32(args->flags); /*flags */
1629 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1630 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1631 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1632 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1633 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1634 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1635 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1638 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1639 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1640 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1641 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1642 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1643 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1644 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1646 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1647 *p++ = cpu_to_be32(1);
1648 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1650 /* authsys_parms rfc1831 */
1651 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1652 p = xdr_encode_opaque(p, machine_name, len);
1653 *p++ = cpu_to_be32(0); /* UID */
1654 *p++ = cpu_to_be32(0); /* GID */
1655 *p = cpu_to_be32(0); /* No more gids */
1657 hdr->replen += decode_create_session_maxsz;
1660 static void encode_destroy_session(struct xdr_stream *xdr,
1661 struct nfs4_session *session,
1662 struct compound_hdr *hdr)
1665 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1666 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1667 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1669 hdr->replen += decode_destroy_session_maxsz;
1672 static void encode_reclaim_complete(struct xdr_stream *xdr,
1673 struct nfs41_reclaim_complete_args *args,
1674 struct compound_hdr *hdr)
1678 p = reserve_space(xdr, 8);
1679 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1680 *p++ = cpu_to_be32(args->one_fs);
1682 hdr->replen += decode_reclaim_complete_maxsz;
1684 #endif /* CONFIG_NFS_V4_1 */
1686 static void encode_sequence(struct xdr_stream *xdr,
1687 const struct nfs4_sequence_args *args,
1688 struct compound_hdr *hdr)
1690 #if defined(CONFIG_NFS_V4_1)
1691 struct nfs4_session *session = args->sa_session;
1692 struct nfs4_slot_table *tp;
1693 struct nfs4_slot *slot;
1699 tp = &session->fc_slot_table;
1701 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1702 slot = tp->slots + args->sa_slotid;
1704 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1705 *p++ = cpu_to_be32(OP_SEQUENCE);
1708 * Sessionid + seqid + slotid + max slotid + cache_this
1710 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1711 "max_slotid=%d cache_this=%d\n",
1713 ((u32 *)session->sess_id.data)[0],
1714 ((u32 *)session->sess_id.data)[1],
1715 ((u32 *)session->sess_id.data)[2],
1716 ((u32 *)session->sess_id.data)[3],
1717 slot->seq_nr, args->sa_slotid,
1718 tp->highest_used_slotid, args->sa_cache_this);
1719 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1720 *p++ = cpu_to_be32(slot->seq_nr);
1721 *p++ = cpu_to_be32(args->sa_slotid);
1722 *p++ = cpu_to_be32(tp->highest_used_slotid);
1723 *p = cpu_to_be32(args->sa_cache_this);
1725 hdr->replen += decode_sequence_maxsz;
1726 #endif /* CONFIG_NFS_V4_1 */
1730 * END OF "GENERIC" ENCODE ROUTINES.
1733 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1735 #if defined(CONFIG_NFS_V4_1)
1736 if (args->sa_session)
1737 return args->sa_session->clp->cl_mvops->minor_version;
1738 #endif /* CONFIG_NFS_V4_1 */
1743 * Encode an ACCESS request
1745 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1747 struct xdr_stream xdr;
1748 struct compound_hdr hdr = {
1749 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1752 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1753 encode_compound_hdr(&xdr, req, &hdr);
1754 encode_sequence(&xdr, &args->seq_args, &hdr);
1755 encode_putfh(&xdr, args->fh, &hdr);
1756 encode_access(&xdr, args->access, &hdr);
1757 encode_getfattr(&xdr, args->bitmask, &hdr);
1763 * Encode LOOKUP request
1765 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1767 struct xdr_stream xdr;
1768 struct compound_hdr hdr = {
1769 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1772 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1773 encode_compound_hdr(&xdr, req, &hdr);
1774 encode_sequence(&xdr, &args->seq_args, &hdr);
1775 encode_putfh(&xdr, args->dir_fh, &hdr);
1776 encode_lookup(&xdr, args->name, &hdr);
1777 encode_getfh(&xdr, &hdr);
1778 encode_getfattr(&xdr, args->bitmask, &hdr);
1784 * Encode LOOKUP_ROOT request
1786 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1788 struct xdr_stream xdr;
1789 struct compound_hdr hdr = {
1790 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1793 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1794 encode_compound_hdr(&xdr, req, &hdr);
1795 encode_sequence(&xdr, &args->seq_args, &hdr);
1796 encode_putrootfh(&xdr, &hdr);
1797 encode_getfh(&xdr, &hdr);
1798 encode_getfattr(&xdr, args->bitmask, &hdr);
1804 * Encode REMOVE request
1806 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1808 struct xdr_stream xdr;
1809 struct compound_hdr hdr = {
1810 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1813 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1814 encode_compound_hdr(&xdr, req, &hdr);
1815 encode_sequence(&xdr, &args->seq_args, &hdr);
1816 encode_putfh(&xdr, args->fh, &hdr);
1817 encode_remove(&xdr, &args->name, &hdr);
1818 encode_getfattr(&xdr, args->bitmask, &hdr);
1824 * Encode RENAME request
1826 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args)
1828 struct xdr_stream xdr;
1829 struct compound_hdr hdr = {
1830 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1833 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1834 encode_compound_hdr(&xdr, req, &hdr);
1835 encode_sequence(&xdr, &args->seq_args, &hdr);
1836 encode_putfh(&xdr, args->old_dir, &hdr);
1837 encode_savefh(&xdr, &hdr);
1838 encode_putfh(&xdr, args->new_dir, &hdr);
1839 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1840 encode_getfattr(&xdr, args->bitmask, &hdr);
1841 encode_restorefh(&xdr, &hdr);
1842 encode_getfattr(&xdr, args->bitmask, &hdr);
1848 * Encode LINK request
1850 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1852 struct xdr_stream xdr;
1853 struct compound_hdr hdr = {
1854 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1857 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1858 encode_compound_hdr(&xdr, req, &hdr);
1859 encode_sequence(&xdr, &args->seq_args, &hdr);
1860 encode_putfh(&xdr, args->fh, &hdr);
1861 encode_savefh(&xdr, &hdr);
1862 encode_putfh(&xdr, args->dir_fh, &hdr);
1863 encode_link(&xdr, args->name, &hdr);
1864 encode_getfattr(&xdr, args->bitmask, &hdr);
1865 encode_restorefh(&xdr, &hdr);
1866 encode_getfattr(&xdr, args->bitmask, &hdr);
1872 * Encode CREATE request
1874 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1876 struct xdr_stream xdr;
1877 struct compound_hdr hdr = {
1878 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1881 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1882 encode_compound_hdr(&xdr, req, &hdr);
1883 encode_sequence(&xdr, &args->seq_args, &hdr);
1884 encode_putfh(&xdr, args->dir_fh, &hdr);
1885 encode_savefh(&xdr, &hdr);
1886 encode_create(&xdr, args, &hdr);
1887 encode_getfh(&xdr, &hdr);
1888 encode_getfattr(&xdr, args->bitmask, &hdr);
1889 encode_restorefh(&xdr, &hdr);
1890 encode_getfattr(&xdr, args->bitmask, &hdr);
1896 * Encode SYMLINK request
1898 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1900 return nfs4_xdr_enc_create(req, p, args);
1904 * Encode GETATTR request
1906 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1908 struct xdr_stream xdr;
1909 struct compound_hdr hdr = {
1910 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1913 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1914 encode_compound_hdr(&xdr, req, &hdr);
1915 encode_sequence(&xdr, &args->seq_args, &hdr);
1916 encode_putfh(&xdr, args->fh, &hdr);
1917 encode_getfattr(&xdr, args->bitmask, &hdr);
1923 * Encode a CLOSE request
1925 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1927 struct xdr_stream xdr;
1928 struct compound_hdr hdr = {
1929 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1932 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1933 encode_compound_hdr(&xdr, req, &hdr);
1934 encode_sequence(&xdr, &args->seq_args, &hdr);
1935 encode_putfh(&xdr, args->fh, &hdr);
1936 encode_close(&xdr, args, &hdr);
1937 encode_getfattr(&xdr, args->bitmask, &hdr);
1943 * Encode an OPEN request
1945 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1947 struct xdr_stream xdr;
1948 struct compound_hdr hdr = {
1949 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1952 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1953 encode_compound_hdr(&xdr, req, &hdr);
1954 encode_sequence(&xdr, &args->seq_args, &hdr);
1955 encode_putfh(&xdr, args->fh, &hdr);
1956 encode_savefh(&xdr, &hdr);
1957 encode_open(&xdr, args, &hdr);
1958 encode_getfh(&xdr, &hdr);
1959 encode_getfattr(&xdr, args->bitmask, &hdr);
1960 encode_restorefh(&xdr, &hdr);
1961 encode_getfattr(&xdr, args->bitmask, &hdr);
1967 * Encode an OPEN_CONFIRM request
1969 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1971 struct xdr_stream xdr;
1972 struct compound_hdr hdr = {
1976 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1977 encode_compound_hdr(&xdr, req, &hdr);
1978 encode_putfh(&xdr, args->fh, &hdr);
1979 encode_open_confirm(&xdr, args, &hdr);
1985 * Encode an OPEN request with no attributes.
1987 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1989 struct xdr_stream xdr;
1990 struct compound_hdr hdr = {
1991 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1994 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1995 encode_compound_hdr(&xdr, req, &hdr);
1996 encode_sequence(&xdr, &args->seq_args, &hdr);
1997 encode_putfh(&xdr, args->fh, &hdr);
1998 encode_open(&xdr, args, &hdr);
1999 encode_getfattr(&xdr, args->bitmask, &hdr);
2005 * Encode an OPEN_DOWNGRADE request
2007 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
2009 struct xdr_stream xdr;
2010 struct compound_hdr hdr = {
2011 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2014 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2015 encode_compound_hdr(&xdr, req, &hdr);
2016 encode_sequence(&xdr, &args->seq_args, &hdr);
2017 encode_putfh(&xdr, args->fh, &hdr);
2018 encode_open_downgrade(&xdr, args, &hdr);
2019 encode_getfattr(&xdr, args->bitmask, &hdr);
2025 * Encode a LOCK request
2027 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
2029 struct xdr_stream xdr;
2030 struct compound_hdr hdr = {
2031 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2034 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2035 encode_compound_hdr(&xdr, req, &hdr);
2036 encode_sequence(&xdr, &args->seq_args, &hdr);
2037 encode_putfh(&xdr, args->fh, &hdr);
2038 encode_lock(&xdr, args, &hdr);
2044 * Encode a LOCKT request
2046 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *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_lockt(&xdr, args, &hdr);
2063 * Encode a LOCKU request
2065 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *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_locku(&xdr, args, &hdr);
2081 static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args)
2083 struct xdr_stream xdr;
2084 struct compound_hdr hdr = {
2088 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2089 encode_compound_hdr(&xdr, req, &hdr);
2090 encode_release_lockowner(&xdr, &args->lock_owner, &hdr);
2096 * Encode a READLINK request
2098 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
2100 struct xdr_stream xdr;
2101 struct compound_hdr hdr = {
2102 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2105 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2106 encode_compound_hdr(&xdr, req, &hdr);
2107 encode_sequence(&xdr, &args->seq_args, &hdr);
2108 encode_putfh(&xdr, args->fh, &hdr);
2109 encode_readlink(&xdr, args, req, &hdr);
2111 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2112 args->pgbase, args->pglen);
2118 * Encode a READDIR request
2120 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
2122 struct xdr_stream xdr;
2123 struct compound_hdr hdr = {
2124 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2127 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2128 encode_compound_hdr(&xdr, req, &hdr);
2129 encode_sequence(&xdr, &args->seq_args, &hdr);
2130 encode_putfh(&xdr, args->fh, &hdr);
2131 encode_readdir(&xdr, args, req, &hdr);
2133 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2134 args->pgbase, args->count);
2135 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2136 __func__, hdr.replen << 2, args->pages,
2137 args->pgbase, args->count);
2143 * Encode a READ request
2145 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
2147 struct xdr_stream xdr;
2148 struct compound_hdr hdr = {
2149 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2152 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2153 encode_compound_hdr(&xdr, req, &hdr);
2154 encode_sequence(&xdr, &args->seq_args, &hdr);
2155 encode_putfh(&xdr, args->fh, &hdr);
2156 encode_read(&xdr, args, &hdr);
2158 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2159 args->pages, args->pgbase, args->count);
2160 req->rq_rcv_buf.flags |= XDRBUF_READ;
2166 * Encode an SETATTR request
2168 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
2170 struct xdr_stream xdr;
2171 struct compound_hdr hdr = {
2172 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2175 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2176 encode_compound_hdr(&xdr, req, &hdr);
2177 encode_sequence(&xdr, &args->seq_args, &hdr);
2178 encode_putfh(&xdr, args->fh, &hdr);
2179 encode_setattr(&xdr, args, args->server, &hdr);
2180 encode_getfattr(&xdr, args->bitmask, &hdr);
2186 * Encode a GETACL request
2189 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
2190 struct nfs_getaclargs *args)
2192 struct xdr_stream xdr;
2193 struct compound_hdr hdr = {
2194 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2198 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2199 encode_compound_hdr(&xdr, req, &hdr);
2200 encode_sequence(&xdr, &args->seq_args, &hdr);
2201 encode_putfh(&xdr, args->fh, &hdr);
2202 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2203 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2205 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2206 args->acl_pages, args->acl_pgbase, args->acl_len);
2212 * Encode a WRITE request
2214 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2216 struct xdr_stream xdr;
2217 struct compound_hdr hdr = {
2218 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2221 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2222 encode_compound_hdr(&xdr, req, &hdr);
2223 encode_sequence(&xdr, &args->seq_args, &hdr);
2224 encode_putfh(&xdr, args->fh, &hdr);
2225 encode_write(&xdr, args, &hdr);
2226 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2227 encode_getfattr(&xdr, args->bitmask, &hdr);
2235 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2237 struct xdr_stream xdr;
2238 struct compound_hdr hdr = {
2239 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2242 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2243 encode_compound_hdr(&xdr, req, &hdr);
2244 encode_sequence(&xdr, &args->seq_args, &hdr);
2245 encode_putfh(&xdr, args->fh, &hdr);
2246 encode_commit(&xdr, args, &hdr);
2247 encode_getfattr(&xdr, args->bitmask, &hdr);
2255 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2257 struct xdr_stream xdr;
2258 struct compound_hdr hdr = {
2259 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2262 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2263 encode_compound_hdr(&xdr, req, &hdr);
2264 encode_sequence(&xdr, &args->seq_args, &hdr);
2265 encode_putfh(&xdr, args->fh, &hdr);
2266 encode_fsinfo(&xdr, args->bitmask, &hdr);
2272 * a PATHCONF request
2274 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2276 struct xdr_stream xdr;
2277 struct compound_hdr hdr = {
2278 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2281 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2282 encode_compound_hdr(&xdr, req, &hdr);
2283 encode_sequence(&xdr, &args->seq_args, &hdr);
2284 encode_putfh(&xdr, args->fh, &hdr);
2285 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2294 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2296 struct xdr_stream xdr;
2297 struct compound_hdr hdr = {
2298 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2301 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2302 encode_compound_hdr(&xdr, req, &hdr);
2303 encode_sequence(&xdr, &args->seq_args, &hdr);
2304 encode_putfh(&xdr, args->fh, &hdr);
2305 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2306 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2312 * GETATTR_BITMAP request
2314 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2315 struct nfs4_server_caps_arg *args)
2317 struct xdr_stream xdr;
2318 struct compound_hdr hdr = {
2319 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2322 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2323 encode_compound_hdr(&xdr, req, &hdr);
2324 encode_sequence(&xdr, &args->seq_args, &hdr);
2325 encode_putfh(&xdr, args->fhandle, &hdr);
2326 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2327 FATTR4_WORD0_LINK_SUPPORT|
2328 FATTR4_WORD0_SYMLINK_SUPPORT|
2329 FATTR4_WORD0_ACLSUPPORT, &hdr);
2337 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2339 struct xdr_stream xdr;
2340 struct compound_hdr hdr = {
2344 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2345 encode_compound_hdr(&xdr, req, &hdr);
2346 encode_renew(&xdr, clp, &hdr);
2352 * a SETCLIENTID request
2354 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2356 struct xdr_stream xdr;
2357 struct compound_hdr hdr = {
2361 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2362 encode_compound_hdr(&xdr, req, &hdr);
2363 encode_setclientid(&xdr, sc, &hdr);
2369 * a SETCLIENTID_CONFIRM request
2371 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg)
2373 struct xdr_stream xdr;
2374 struct compound_hdr hdr = {
2377 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2379 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2380 encode_compound_hdr(&xdr, req, &hdr);
2381 encode_setclientid_confirm(&xdr, arg, &hdr);
2382 encode_putrootfh(&xdr, &hdr);
2383 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2389 * DELEGRETURN request
2391 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2393 struct xdr_stream xdr;
2394 struct compound_hdr hdr = {
2395 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2398 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2399 encode_compound_hdr(&xdr, req, &hdr);
2400 encode_sequence(&xdr, &args->seq_args, &hdr);
2401 encode_putfh(&xdr, args->fhandle, &hdr);
2402 encode_delegreturn(&xdr, args->stateid, &hdr);
2403 encode_getfattr(&xdr, args->bitmask, &hdr);
2409 * Encode FS_LOCATIONS request
2411 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2413 struct xdr_stream xdr;
2414 struct compound_hdr hdr = {
2415 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2419 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2420 encode_compound_hdr(&xdr, req, &hdr);
2421 encode_sequence(&xdr, &args->seq_args, &hdr);
2422 encode_putfh(&xdr, args->dir_fh, &hdr);
2423 encode_lookup(&xdr, args->name, &hdr);
2424 replen = hdr.replen; /* get the attribute into args->page */
2425 encode_fs_locations(&xdr, args->bitmask, &hdr);
2427 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2433 #if defined(CONFIG_NFS_V4_1)
2435 * EXCHANGE_ID request
2437 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2438 struct nfs41_exchange_id_args *args)
2440 struct xdr_stream xdr;
2441 struct compound_hdr hdr = {
2442 .minorversion = args->client->cl_mvops->minor_version,
2445 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2446 encode_compound_hdr(&xdr, req, &hdr);
2447 encode_exchange_id(&xdr, args, &hdr);
2453 * a CREATE_SESSION request
2455 static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
2456 struct nfs41_create_session_args *args)
2458 struct xdr_stream xdr;
2459 struct compound_hdr hdr = {
2460 .minorversion = args->client->cl_mvops->minor_version,
2463 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2464 encode_compound_hdr(&xdr, req, &hdr);
2465 encode_create_session(&xdr, args, &hdr);
2471 * a DESTROY_SESSION request
2473 static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
2474 struct nfs4_session *session)
2476 struct xdr_stream xdr;
2477 struct compound_hdr hdr = {
2478 .minorversion = session->clp->cl_mvops->minor_version,
2481 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2482 encode_compound_hdr(&xdr, req, &hdr);
2483 encode_destroy_session(&xdr, session, &hdr);
2489 * a SEQUENCE request
2491 static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
2492 struct nfs4_sequence_args *args)
2494 struct xdr_stream xdr;
2495 struct compound_hdr hdr = {
2496 .minorversion = nfs4_xdr_minorversion(args),
2499 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2500 encode_compound_hdr(&xdr, req, &hdr);
2501 encode_sequence(&xdr, args, &hdr);
2507 * a GET_LEASE_TIME request
2509 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2510 struct nfs4_get_lease_time_args *args)
2512 struct xdr_stream xdr;
2513 struct compound_hdr hdr = {
2514 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2516 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2518 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2519 encode_compound_hdr(&xdr, req, &hdr);
2520 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2521 encode_putrootfh(&xdr, &hdr);
2522 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2528 * a RECLAIM_COMPLETE request
2530 static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
2531 struct nfs41_reclaim_complete_args *args)
2533 struct xdr_stream xdr;
2534 struct compound_hdr hdr = {
2535 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2538 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2539 encode_compound_hdr(&xdr, req, &hdr);
2540 encode_sequence(&xdr, &args->seq_args, &hdr);
2541 encode_reclaim_complete(&xdr, args, &hdr);
2546 #endif /* CONFIG_NFS_V4_1 */
2548 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2550 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2551 "Remaining buffer length is %tu words.\n",
2552 func, xdr->end - xdr->p);
2555 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2559 p = xdr_inline_decode(xdr, 4);
2562 *len = be32_to_cpup(p);
2563 p = xdr_inline_decode(xdr, *len);
2566 *string = (char *)p;
2569 print_overflow_msg(__func__, xdr);
2573 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2577 p = xdr_inline_decode(xdr, 8);
2580 hdr->status = be32_to_cpup(p++);
2581 hdr->taglen = be32_to_cpup(p);
2583 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2586 hdr->tag = (char *)p;
2587 p += XDR_QUADLEN(hdr->taglen);
2588 hdr->nops = be32_to_cpup(p);
2589 if (unlikely(hdr->nops < 1))
2590 return nfs4_stat_to_errno(hdr->status);
2593 print_overflow_msg(__func__, xdr);
2597 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2603 p = xdr_inline_decode(xdr, 8);
2606 opnum = be32_to_cpup(p++);
2607 if (opnum != expected) {
2608 dprintk("nfs: Server returned operation"
2609 " %d but we issued a request for %d\n",
2613 nfserr = be32_to_cpup(p);
2614 if (nfserr != NFS_OK)
2615 return nfs4_stat_to_errno(nfserr);
2618 print_overflow_msg(__func__, xdr);
2623 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2626 unsigned int strlen;
2629 p = xdr_inline_decode(xdr, 12);
2631 return decode_opaque_inline(xdr, &strlen, &str);
2632 print_overflow_msg(__func__, xdr);
2636 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2641 p = xdr_inline_decode(xdr, 4);
2644 bmlen = be32_to_cpup(p);
2646 bitmap[0] = bitmap[1] = 0;
2647 p = xdr_inline_decode(xdr, (bmlen << 2));
2651 bitmap[0] = be32_to_cpup(p++);
2653 bitmap[1] = be32_to_cpup(p);
2657 print_overflow_msg(__func__, xdr);
2661 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2665 p = xdr_inline_decode(xdr, 4);
2668 *attrlen = be32_to_cpup(p);
2672 print_overflow_msg(__func__, xdr);
2676 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2678 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2679 decode_attr_bitmap(xdr, bitmask);
2680 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2682 bitmask[0] = bitmask[1] = 0;
2683 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2687 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2693 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2695 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2696 p = xdr_inline_decode(xdr, 4);
2699 *type = be32_to_cpup(p);
2700 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2701 dprintk("%s: bad type %d\n", __func__, *type);
2704 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2705 ret = NFS_ATTR_FATTR_TYPE;
2707 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2710 print_overflow_msg(__func__, xdr);
2714 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2720 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2722 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2723 p = xdr_inline_decode(xdr, 8);
2726 xdr_decode_hyper(p, change);
2727 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2728 ret = NFS_ATTR_FATTR_CHANGE;
2730 dprintk("%s: change attribute=%Lu\n", __func__,
2731 (unsigned long long)*change);
2734 print_overflow_msg(__func__, xdr);
2738 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2744 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2746 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2747 p = xdr_inline_decode(xdr, 8);
2750 xdr_decode_hyper(p, size);
2751 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2752 ret = NFS_ATTR_FATTR_SIZE;
2754 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2757 print_overflow_msg(__func__, xdr);
2761 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2766 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2768 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2769 p = xdr_inline_decode(xdr, 4);
2772 *res = be32_to_cpup(p);
2773 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2775 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2778 print_overflow_msg(__func__, xdr);
2782 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2787 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2789 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2790 p = xdr_inline_decode(xdr, 4);
2793 *res = be32_to_cpup(p);
2794 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2796 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2799 print_overflow_msg(__func__, xdr);
2803 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2810 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2812 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2813 p = xdr_inline_decode(xdr, 16);
2816 p = xdr_decode_hyper(p, &fsid->major);
2817 xdr_decode_hyper(p, &fsid->minor);
2818 bitmap[0] &= ~FATTR4_WORD0_FSID;
2819 ret = NFS_ATTR_FATTR_FSID;
2821 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2822 (unsigned long long)fsid->major,
2823 (unsigned long long)fsid->minor);
2826 print_overflow_msg(__func__, xdr);
2830 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2835 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2837 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2838 p = xdr_inline_decode(xdr, 4);
2841 *res = be32_to_cpup(p);
2842 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2844 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2847 print_overflow_msg(__func__, xdr);
2851 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2855 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2856 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2858 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2859 p = xdr_inline_decode(xdr, 4);
2862 *res = be32_to_cpup(p);
2863 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2865 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2868 print_overflow_msg(__func__, xdr);
2872 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2878 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2880 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2881 p = xdr_inline_decode(xdr, 8);
2884 xdr_decode_hyper(p, fileid);
2885 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2886 ret = NFS_ATTR_FATTR_FILEID;
2888 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2891 print_overflow_msg(__func__, xdr);
2895 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2901 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2903 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2904 p = xdr_inline_decode(xdr, 8);
2907 xdr_decode_hyper(p, fileid);
2908 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2909 ret = NFS_ATTR_FATTR_FILEID;
2911 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2914 print_overflow_msg(__func__, xdr);
2918 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2924 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2926 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2927 p = xdr_inline_decode(xdr, 8);
2930 xdr_decode_hyper(p, res);
2931 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2933 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2936 print_overflow_msg(__func__, xdr);
2940 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2946 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2948 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2949 p = xdr_inline_decode(xdr, 8);
2952 xdr_decode_hyper(p, res);
2953 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2955 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2958 print_overflow_msg(__func__, xdr);
2962 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2968 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2970 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2971 p = xdr_inline_decode(xdr, 8);
2974 xdr_decode_hyper(p, res);
2975 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2977 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2980 print_overflow_msg(__func__, xdr);
2984 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2990 p = xdr_inline_decode(xdr, 4);
2993 n = be32_to_cpup(p);
2997 path->ncomponents = 0;
2998 while (path->ncomponents < n) {
2999 struct nfs4_string *component = &path->components[path->ncomponents];
3000 status = decode_opaque_inline(xdr, &component->len, &component->data);
3001 if (unlikely(status != 0))
3003 if (path->ncomponents != n)
3005 dprintk("%s", component->data);
3006 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3007 path->ncomponents++;
3009 dprintk("cannot parse %d components in path\n", n);
3017 /* a root pathname is sent as a zero component4 */
3018 path->ncomponents = 1;
3019 path->components[0].len=0;
3020 path->components[0].data=NULL;
3021 dprintk("path /\n");
3024 dprintk(" status %d", status);
3028 print_overflow_msg(__func__, xdr);
3032 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3038 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3041 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3043 dprintk("%s: fsroot ", __func__);
3044 status = decode_pathname(xdr, &res->fs_path);
3045 if (unlikely(status != 0))
3047 p = xdr_inline_decode(xdr, 4);
3050 n = be32_to_cpup(p);
3053 res->nlocations = 0;
3054 while (res->nlocations < n) {
3056 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3058 p = xdr_inline_decode(xdr, 4);
3061 m = be32_to_cpup(p);
3064 dprintk("%s: servers ", __func__);
3065 while (loc->nservers < m) {
3066 struct nfs4_string *server = &loc->servers[loc->nservers];
3067 status = decode_opaque_inline(xdr, &server->len, &server->data);
3068 if (unlikely(status != 0))
3070 dprintk("%s ", server->data);
3071 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3075 dprintk("%s: using first %u of %u servers "
3076 "returned for location %u\n",
3078 NFS4_FS_LOCATION_MAXSERVERS,
3079 m, res->nlocations);
3080 for (i = loc->nservers; i < m; i++) {
3083 status = decode_opaque_inline(xdr, &len, &data);
3084 if (unlikely(status != 0))
3089 status = decode_pathname(xdr, &loc->rootpath);
3090 if (unlikely(status != 0))
3092 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3095 if (res->nlocations != 0)
3096 status = NFS_ATTR_FATTR_V4_REFERRAL;
3098 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3101 print_overflow_msg(__func__, xdr);
3107 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3113 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3115 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3116 p = xdr_inline_decode(xdr, 8);
3119 xdr_decode_hyper(p, res);
3120 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3122 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3125 print_overflow_msg(__func__, xdr);
3129 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3135 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3137 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3138 p = xdr_inline_decode(xdr, 4);
3141 *maxlink = be32_to_cpup(p);
3142 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3144 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3147 print_overflow_msg(__func__, xdr);
3151 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3157 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3159 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3160 p = xdr_inline_decode(xdr, 4);
3163 *maxname = be32_to_cpup(p);
3164 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3166 dprintk("%s: maxname=%u\n", __func__, *maxname);
3169 print_overflow_msg(__func__, xdr);
3173 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3179 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3181 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3183 p = xdr_inline_decode(xdr, 8);
3186 xdr_decode_hyper(p, &maxread);
3187 if (maxread > 0x7FFFFFFF)
3188 maxread = 0x7FFFFFFF;
3189 *res = (uint32_t)maxread;
3190 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3192 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3195 print_overflow_msg(__func__, xdr);
3199 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3205 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3207 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3209 p = xdr_inline_decode(xdr, 8);
3212 xdr_decode_hyper(p, &maxwrite);
3213 if (maxwrite > 0x7FFFFFFF)
3214 maxwrite = 0x7FFFFFFF;
3215 *res = (uint32_t)maxwrite;
3216 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3218 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3221 print_overflow_msg(__func__, xdr);
3225 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3232 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3234 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3235 p = xdr_inline_decode(xdr, 4);
3238 tmp = be32_to_cpup(p);
3239 *mode = tmp & ~S_IFMT;
3240 bitmap[1] &= ~FATTR4_WORD1_MODE;
3241 ret = NFS_ATTR_FATTR_MODE;
3243 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3246 print_overflow_msg(__func__, xdr);
3250 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3256 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3258 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3259 p = xdr_inline_decode(xdr, 4);
3262 *nlink = be32_to_cpup(p);
3263 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3264 ret = NFS_ATTR_FATTR_NLINK;
3266 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3269 print_overflow_msg(__func__, xdr);
3273 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3274 struct nfs_client *clp, uint32_t *uid, int may_sleep)
3281 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3283 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3284 p = xdr_inline_decode(xdr, 4);
3287 len = be32_to_cpup(p);
3288 p = xdr_inline_decode(xdr, len);
3293 } else if (len < XDR_MAX_NETOBJ) {
3294 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3295 ret = NFS_ATTR_FATTR_OWNER;
3297 dprintk("%s: nfs_map_name_to_uid failed!\n",
3300 dprintk("%s: name too long (%u)!\n",
3302 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3304 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3307 print_overflow_msg(__func__, xdr);
3311 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3312 struct nfs_client *clp, uint32_t *gid, int may_sleep)
3319 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3321 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3322 p = xdr_inline_decode(xdr, 4);
3325 len = be32_to_cpup(p);
3326 p = xdr_inline_decode(xdr, len);
3331 } else if (len < XDR_MAX_NETOBJ) {
3332 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3333 ret = NFS_ATTR_FATTR_GROUP;
3335 dprintk("%s: nfs_map_group_to_gid failed!\n",
3338 dprintk("%s: name too long (%u)!\n",
3340 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3342 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3345 print_overflow_msg(__func__, xdr);
3349 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3351 uint32_t major = 0, minor = 0;
3356 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3358 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3361 p = xdr_inline_decode(xdr, 8);
3364 major = be32_to_cpup(p++);
3365 minor = be32_to_cpup(p);
3366 tmp = MKDEV(major, minor);
3367 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3369 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3370 ret = NFS_ATTR_FATTR_RDEV;
3372 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3375 print_overflow_msg(__func__, xdr);
3379 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3385 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3387 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3388 p = xdr_inline_decode(xdr, 8);
3391 xdr_decode_hyper(p, res);
3392 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3394 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3397 print_overflow_msg(__func__, xdr);
3401 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3407 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3409 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3410 p = xdr_inline_decode(xdr, 8);
3413 xdr_decode_hyper(p, res);
3414 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3416 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3419 print_overflow_msg(__func__, xdr);
3423 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3429 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3431 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3432 p = xdr_inline_decode(xdr, 8);
3435 xdr_decode_hyper(p, res);
3436 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3438 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3441 print_overflow_msg(__func__, xdr);
3445 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3451 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3453 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3454 p = xdr_inline_decode(xdr, 8);
3457 xdr_decode_hyper(p, used);
3458 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3459 ret = NFS_ATTR_FATTR_SPACE_USED;
3461 dprintk("%s: space used=%Lu\n", __func__,
3462 (unsigned long long)*used);
3465 print_overflow_msg(__func__, xdr);
3469 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3475 p = xdr_inline_decode(xdr, 12);
3478 p = xdr_decode_hyper(p, &sec);
3479 nsec = be32_to_cpup(p);
3480 time->tv_sec = (time_t)sec;
3481 time->tv_nsec = (long)nsec;
3484 print_overflow_msg(__func__, xdr);
3488 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3494 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3496 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3497 status = decode_attr_time(xdr, time);
3499 status = NFS_ATTR_FATTR_ATIME;
3500 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3502 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3506 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3512 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3514 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3515 status = decode_attr_time(xdr, time);
3517 status = NFS_ATTR_FATTR_CTIME;
3518 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3520 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3524 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3530 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3532 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3533 status = decode_attr_time(xdr, time);
3535 status = NFS_ATTR_FATTR_MTIME;
3536 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3538 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3542 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3544 unsigned int attrwords = XDR_QUADLEN(attrlen);
3545 unsigned int nwords = xdr->p - savep;
3547 if (unlikely(attrwords != nwords)) {
3548 dprintk("%s: server returned incorrect attribute length: "
3552 (attrwords < nwords) ? '<' : '>',
3559 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3563 p = xdr_inline_decode(xdr, 20);
3566 cinfo->atomic = be32_to_cpup(p++);
3567 p = xdr_decode_hyper(p, &cinfo->before);
3568 xdr_decode_hyper(p, &cinfo->after);
3571 print_overflow_msg(__func__, xdr);
3575 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3581 status = decode_op_hdr(xdr, OP_ACCESS);
3584 p = xdr_inline_decode(xdr, 8);
3587 supp = be32_to_cpup(p++);
3588 acc = be32_to_cpup(p);
3589 access->supported = supp;
3590 access->access = acc;
3593 print_overflow_msg(__func__, xdr);
3597 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
3601 p = xdr_inline_decode(xdr, len);
3603 memcpy(buf, p, len);
3606 print_overflow_msg(__func__, xdr);
3610 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
3612 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
3615 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3619 status = decode_op_hdr(xdr, OP_CLOSE);
3621 nfs_increment_open_seqid(status, res->seqid);
3623 status = decode_stateid(xdr, &res->stateid);
3627 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
3629 return decode_opaque_fixed(xdr, verifier, 8);
3632 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3636 status = decode_op_hdr(xdr, OP_COMMIT);
3638 status = decode_verifier(xdr, res->verf->verifier);
3642 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3648 status = decode_op_hdr(xdr, OP_CREATE);
3651 if ((status = decode_change_info(xdr, cinfo)))
3653 p = xdr_inline_decode(xdr, 4);
3656 bmlen = be32_to_cpup(p);
3657 p = xdr_inline_decode(xdr, bmlen << 2);
3661 print_overflow_msg(__func__, xdr);
3665 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3668 uint32_t attrlen, bitmap[2] = {0};
3671 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3673 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3675 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3677 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3679 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3681 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3683 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3685 status = verify_attr_len(xdr, savep, attrlen);
3687 dprintk("%s: xdr returned %d!\n", __func__, -status);
3691 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3694 uint32_t attrlen, bitmap[2] = {0};
3697 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3699 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3701 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3704 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3706 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3708 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3710 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3712 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3714 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3717 status = verify_attr_len(xdr, savep, attrlen);
3719 dprintk("%s: xdr returned %d!\n", __func__, -status);
3723 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3726 uint32_t attrlen, bitmap[2] = {0};
3729 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3731 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3733 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3736 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3738 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3741 status = verify_attr_len(xdr, savep, attrlen);
3743 dprintk("%s: xdr returned %d!\n", __func__, -status);
3747 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
3748 const struct nfs_server *server, int may_sleep)
3758 status = decode_op_hdr(xdr, OP_GETATTR);
3762 status = decode_attr_bitmap(xdr, bitmap);
3766 status = decode_attr_length(xdr, &attrlen, &savep);
3771 status = decode_attr_type(xdr, bitmap, &type);
3776 fattr->mode |= nfs_type2fmt[type];
3777 fattr->valid |= status;
3780 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3783 fattr->valid |= status;
3785 status = decode_attr_size(xdr, bitmap, &fattr->size);
3788 fattr->valid |= status;
3790 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3793 fattr->valid |= status;
3795 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3798 fattr->valid |= status;
3800 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3801 struct nfs4_fs_locations,
3805 fattr->valid |= status;
3807 status = decode_attr_mode(xdr, bitmap, &fmode);
3811 fattr->mode |= fmode;
3812 fattr->valid |= status;
3815 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3818 fattr->valid |= status;
3820 status = decode_attr_owner(xdr, bitmap, server->nfs_client,
3821 &fattr->uid, may_sleep);
3824 fattr->valid |= status;
3826 status = decode_attr_group(xdr, bitmap, server->nfs_client,
3827 &fattr->gid, may_sleep);
3830 fattr->valid |= status;
3832 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3835 fattr->valid |= status;
3837 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3840 fattr->valid |= status;
3842 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3845 fattr->valid |= status;
3847 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3850 fattr->valid |= status;
3852 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3855 fattr->valid |= status;
3857 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3860 if (status != 0 && !(fattr->valid & status)) {
3861 fattr->fileid = fileid;
3862 fattr->valid |= status;
3865 status = verify_attr_len(xdr, savep, attrlen);
3867 dprintk("%s: xdr returned %d\n", __func__, -status);
3872 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3875 uint32_t attrlen, bitmap[2];
3878 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3880 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3882 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3885 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3887 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3889 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3891 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3893 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3894 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3896 fsinfo->wtpref = fsinfo->wtmax;
3898 status = verify_attr_len(xdr, savep, attrlen);
3900 dprintk("%s: xdr returned %d!\n", __func__, -status);
3904 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3910 /* Zero handle first to allow comparisons */
3911 memset(fh, 0, sizeof(*fh));
3913 status = decode_op_hdr(xdr, OP_GETFH);
3917 p = xdr_inline_decode(xdr, 4);
3920 len = be32_to_cpup(p);
3921 if (len > NFS4_FHSIZE)
3924 p = xdr_inline_decode(xdr, len);
3927 memcpy(fh->data, p, len);
3930 print_overflow_msg(__func__, xdr);
3934 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3938 status = decode_op_hdr(xdr, OP_LINK);
3941 return decode_change_info(xdr, cinfo);
3945 * We create the owner, so we know a proper owner.id length is 4.
3947 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3949 uint64_t offset, length, clientid;
3951 uint32_t namelen, type;
3953 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
3956 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
3957 p = xdr_decode_hyper(p, &length);
3958 type = be32_to_cpup(p++); /* 4 byte read */
3959 if (fl != NULL) { /* manipulate file lock */
3960 fl->fl_start = (loff_t)offset;
3961 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3962 if (length == ~(uint64_t)0)
3963 fl->fl_end = OFFSET_MAX;
3964 fl->fl_type = F_WRLCK;
3966 fl->fl_type = F_RDLCK;
3969 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
3970 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
3971 p = xdr_inline_decode(xdr, namelen); /* variable size field */
3973 return -NFS4ERR_DENIED;
3975 print_overflow_msg(__func__, xdr);
3979 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3983 status = decode_op_hdr(xdr, OP_LOCK);
3987 status = decode_stateid(xdr, &res->stateid);
3988 if (unlikely(status))
3990 } else if (status == -NFS4ERR_DENIED)
3991 status = decode_lock_denied(xdr, NULL);
3992 if (res->open_seqid != NULL)
3993 nfs_increment_open_seqid(status, res->open_seqid);
3994 nfs_increment_lock_seqid(status, res->lock_seqid);
3999 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4002 status = decode_op_hdr(xdr, OP_LOCKT);
4003 if (status == -NFS4ERR_DENIED)
4004 return decode_lock_denied(xdr, res->denied);
4008 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4012 status = decode_op_hdr(xdr, OP_LOCKU);
4014 nfs_increment_lock_seqid(status, res->seqid);
4016 status = decode_stateid(xdr, &res->stateid);
4020 static int decode_release_lockowner(struct xdr_stream *xdr)
4022 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4025 static int decode_lookup(struct xdr_stream *xdr)
4027 return decode_op_hdr(xdr, OP_LOOKUP);
4030 /* This is too sick! */
4031 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4034 uint32_t limit_type, nblocks, blocksize;
4036 p = xdr_inline_decode(xdr, 12);
4039 limit_type = be32_to_cpup(p++);
4040 switch (limit_type) {
4042 xdr_decode_hyper(p, maxsize);
4045 nblocks = be32_to_cpup(p++);
4046 blocksize = be32_to_cpup(p);
4047 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4051 print_overflow_msg(__func__, xdr);
4055 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4058 uint32_t delegation_type;
4061 p = xdr_inline_decode(xdr, 4);
4064 delegation_type = be32_to_cpup(p);
4065 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4066 res->delegation_type = 0;
4069 status = decode_stateid(xdr, &res->delegation);
4070 if (unlikely(status))
4072 p = xdr_inline_decode(xdr, 4);
4075 res->do_recall = be32_to_cpup(p);
4077 switch (delegation_type) {
4078 case NFS4_OPEN_DELEGATE_READ:
4079 res->delegation_type = FMODE_READ;
4081 case NFS4_OPEN_DELEGATE_WRITE:
4082 res->delegation_type = FMODE_WRITE|FMODE_READ;
4083 if (decode_space_limit(xdr, &res->maxsize) < 0)
4086 return decode_ace(xdr, NULL, res->server->nfs_client);
4088 print_overflow_msg(__func__, xdr);
4092 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4095 uint32_t savewords, bmlen, i;
4098 status = decode_op_hdr(xdr, OP_OPEN);
4100 nfs_increment_open_seqid(status, res->seqid);
4102 status = decode_stateid(xdr, &res->stateid);
4103 if (unlikely(status))
4106 decode_change_info(xdr, &res->cinfo);
4108 p = xdr_inline_decode(xdr, 8);
4111 res->rflags = be32_to_cpup(p++);
4112 bmlen = be32_to_cpup(p);
4116 p = xdr_inline_decode(xdr, bmlen << 2);
4119 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4120 for (i = 0; i < savewords; ++i)
4121 res->attrset[i] = be32_to_cpup(p++);
4122 for (; i < NFS4_BITMAP_SIZE; i++)
4123 res->attrset[i] = 0;
4125 return decode_delegation(xdr, res);
4127 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4130 print_overflow_msg(__func__, xdr);
4134 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4138 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4140 nfs_increment_open_seqid(status, res->seqid);
4142 status = decode_stateid(xdr, &res->stateid);
4146 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4150 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4152 nfs_increment_open_seqid(status, res->seqid);
4154 status = decode_stateid(xdr, &res->stateid);
4158 static int decode_putfh(struct xdr_stream *xdr)
4160 return decode_op_hdr(xdr, OP_PUTFH);
4163 static int decode_putrootfh(struct xdr_stream *xdr)
4165 return decode_op_hdr(xdr, OP_PUTROOTFH);
4168 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4170 struct kvec *iov = req->rq_rcv_buf.head;
4172 uint32_t count, eof, recvd, hdrlen;
4175 status = decode_op_hdr(xdr, OP_READ);
4178 p = xdr_inline_decode(xdr, 8);
4181 eof = be32_to_cpup(p++);
4182 count = be32_to_cpup(p);
4183 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
4184 recvd = req->rq_rcv_buf.len - hdrlen;
4185 if (count > recvd) {
4186 dprintk("NFS: server cheating in read reply: "
4187 "count %u > recvd %u\n", count, recvd);
4191 xdr_read_pages(xdr, count);
4196 print_overflow_msg(__func__, xdr);
4200 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4202 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4203 struct kvec *iov = rcvbuf->head;
4205 u32 recvd, pglen = rcvbuf->page_len;
4208 status = decode_op_hdr(xdr, OP_READDIR);
4210 status = decode_verifier(xdr, readdir->verifier.data);
4211 if (unlikely(status))
4213 dprintk("%s: verifier = %08x:%08x\n",
4215 ((u32 *)readdir->verifier.data)[0],
4216 ((u32 *)readdir->verifier.data)[1]);
4219 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4220 recvd = rcvbuf->len - hdrlen;
4223 xdr_read_pages(xdr, pglen);
4229 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4231 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4232 struct kvec *iov = rcvbuf->head;
4238 status = decode_op_hdr(xdr, OP_READLINK);
4242 /* Convert length of symlink */
4243 p = xdr_inline_decode(xdr, 4);
4246 len = be32_to_cpup(p);
4247 if (len >= rcvbuf->page_len || len <= 0) {
4248 dprintk("nfs: server returned giant symlink!\n");
4249 return -ENAMETOOLONG;
4251 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4252 recvd = req->rq_rcv_buf.len - hdrlen;
4254 dprintk("NFS: server cheating in readlink reply: "
4255 "count %u > recvd %u\n", len, recvd);
4258 xdr_read_pages(xdr, len);
4260 * The XDR encode routine has set things up so that
4261 * the link text will be copied directly into the
4262 * buffer. We just have to do overflow-checking,
4263 * and and null-terminate the text (the VFS expects
4264 * null-termination).
4266 xdr_terminate_string(rcvbuf, len);
4269 print_overflow_msg(__func__, xdr);
4273 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4277 status = decode_op_hdr(xdr, OP_REMOVE);
4280 status = decode_change_info(xdr, cinfo);
4285 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4286 struct nfs4_change_info *new_cinfo)
4290 status = decode_op_hdr(xdr, OP_RENAME);
4293 if ((status = decode_change_info(xdr, old_cinfo)))
4295 status = decode_change_info(xdr, new_cinfo);
4300 static int decode_renew(struct xdr_stream *xdr)
4302 return decode_op_hdr(xdr, OP_RENEW);
4306 decode_restorefh(struct xdr_stream *xdr)
4308 return decode_op_hdr(xdr, OP_RESTOREFH);
4311 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4317 struct kvec *iov = req->rq_rcv_buf.head;
4321 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4323 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4325 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4328 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4330 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4334 /* We ignore &savep and don't do consistency checks on
4335 * the attr length. Let userspace figure it out.... */
4336 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4337 recvd = req->rq_rcv_buf.len - hdrlen;
4338 if (attrlen > recvd) {
4339 dprintk("NFS: server cheating in getattr"
4340 " acl reply: attrlen %u > recvd %u\n",
4344 xdr_read_pages(xdr, attrlen);
4347 status = -EOPNOTSUPP;
4354 decode_savefh(struct xdr_stream *xdr)
4356 return decode_op_hdr(xdr, OP_SAVEFH);
4359 static int decode_setattr(struct xdr_stream *xdr)
4365 status = decode_op_hdr(xdr, OP_SETATTR);
4368 p = xdr_inline_decode(xdr, 4);
4371 bmlen = be32_to_cpup(p);
4372 p = xdr_inline_decode(xdr, bmlen << 2);
4376 print_overflow_msg(__func__, xdr);
4380 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
4386 p = xdr_inline_decode(xdr, 8);
4389 opnum = be32_to_cpup(p++);
4390 if (opnum != OP_SETCLIENTID) {
4391 dprintk("nfs: decode_setclientid: Server returned operation"
4395 nfserr = be32_to_cpup(p);
4396 if (nfserr == NFS_OK) {
4397 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4400 p = xdr_decode_hyper(p, &res->clientid);
4401 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
4402 } else if (nfserr == NFSERR_CLID_INUSE) {
4405 /* skip netid string */
4406 p = xdr_inline_decode(xdr, 4);
4409 len = be32_to_cpup(p);
4410 p = xdr_inline_decode(xdr, len);
4414 /* skip uaddr string */
4415 p = xdr_inline_decode(xdr, 4);
4418 len = be32_to_cpup(p);
4419 p = xdr_inline_decode(xdr, len);
4422 return -NFSERR_CLID_INUSE;
4424 return nfs4_stat_to_errno(nfserr);
4428 print_overflow_msg(__func__, xdr);
4432 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4434 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4437 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4442 status = decode_op_hdr(xdr, OP_WRITE);
4446 p = xdr_inline_decode(xdr, 16);
4449 res->count = be32_to_cpup(p++);
4450 res->verf->committed = be32_to_cpup(p++);
4451 memcpy(res->verf->verifier, p, 8);
4454 print_overflow_msg(__func__, xdr);
4458 static int decode_delegreturn(struct xdr_stream *xdr)
4460 return decode_op_hdr(xdr, OP_DELEGRETURN);
4463 #if defined(CONFIG_NFS_V4_1)
4464 static int decode_exchange_id(struct xdr_stream *xdr,
4465 struct nfs41_exchange_id_res *res)
4471 struct nfs_client *clp = res->client;
4473 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4477 p = xdr_inline_decode(xdr, 8);
4480 xdr_decode_hyper(p, &clp->cl_ex_clid);
4481 p = xdr_inline_decode(xdr, 12);
4484 clp->cl_seqid = be32_to_cpup(p++);
4485 clp->cl_exchange_flags = be32_to_cpup(p++);
4487 /* We ask for SP4_NONE */
4488 dummy = be32_to_cpup(p);
4489 if (dummy != SP4_NONE)
4492 /* Throw away minor_id */
4493 p = xdr_inline_decode(xdr, 8);
4497 /* Throw away Major id */
4498 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4499 if (unlikely(status))
4502 /* Throw away server_scope */
4503 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4504 if (unlikely(status))
4507 /* Throw away Implementation id array */
4508 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4509 if (unlikely(status))
4514 print_overflow_msg(__func__, xdr);
4518 static int decode_chan_attrs(struct xdr_stream *xdr,
4519 struct nfs4_channel_attrs *attrs)
4524 p = xdr_inline_decode(xdr, 28);
4527 attrs->headerpadsz = be32_to_cpup(p++);
4528 attrs->max_rqst_sz = be32_to_cpup(p++);
4529 attrs->max_resp_sz = be32_to_cpup(p++);
4530 attrs->max_resp_sz_cached = be32_to_cpup(p++);
4531 attrs->max_ops = be32_to_cpup(p++);
4532 attrs->max_reqs = be32_to_cpup(p++);
4533 nr_attrs = be32_to_cpup(p);
4534 if (unlikely(nr_attrs > 1)) {
4535 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4536 __func__, nr_attrs);
4539 if (nr_attrs == 1) {
4540 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
4546 print_overflow_msg(__func__, xdr);
4550 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
4552 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
4555 static int decode_create_session(struct xdr_stream *xdr,
4556 struct nfs41_create_session_res *res)
4560 struct nfs_client *clp = res->client;
4561 struct nfs4_session *session = clp->cl_session;
4563 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
4565 status = decode_sessionid(xdr, &session->sess_id);
4566 if (unlikely(status))
4570 p = xdr_inline_decode(xdr, 8);
4573 clp->cl_seqid = be32_to_cpup(p++);
4574 session->flags = be32_to_cpup(p);
4576 /* Channel attributes */
4577 status = decode_chan_attrs(xdr, &session->fc_attrs);
4579 status = decode_chan_attrs(xdr, &session->bc_attrs);
4582 print_overflow_msg(__func__, xdr);
4586 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4588 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4591 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
4593 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
4595 #endif /* CONFIG_NFS_V4_1 */
4597 static int decode_sequence(struct xdr_stream *xdr,
4598 struct nfs4_sequence_res *res,
4599 struct rpc_rqst *rqstp)
4601 #if defined(CONFIG_NFS_V4_1)
4602 struct nfs4_sessionid id;
4607 if (!res->sr_session)
4610 status = decode_op_hdr(xdr, OP_SEQUENCE);
4612 status = decode_sessionid(xdr, &id);
4613 if (unlikely(status))
4617 * If the server returns different values for sessionID, slotID or
4618 * sequence number, the server is looney tunes.
4620 status = -EREMOTEIO;
4622 if (memcmp(id.data, res->sr_session->sess_id.data,
4623 NFS4_MAX_SESSIONID_LEN)) {
4624 dprintk("%s Invalid session id\n", __func__);
4628 p = xdr_inline_decode(xdr, 20);
4633 dummy = be32_to_cpup(p++);
4634 if (dummy != res->sr_slot->seq_nr) {
4635 dprintk("%s Invalid sequence number\n", __func__);
4639 dummy = be32_to_cpup(p++);
4640 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
4641 dprintk("%s Invalid slot id\n", __func__);
4644 /* highest slot id - currently not processed */
4645 dummy = be32_to_cpup(p++);
4646 /* target highest slot id - currently not processed */
4647 dummy = be32_to_cpup(p++);
4649 res->sr_status_flags = be32_to_cpup(p);
4652 res->sr_status = status;
4655 print_overflow_msg(__func__, xdr);
4658 #else /* CONFIG_NFS_V4_1 */
4660 #endif /* CONFIG_NFS_V4_1 */
4664 * END OF "GENERIC" DECODE ROUTINES.
4668 * Decode OPEN_DOWNGRADE response
4670 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4672 struct xdr_stream xdr;
4673 struct compound_hdr hdr;
4676 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4677 status = decode_compound_hdr(&xdr, &hdr);
4680 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4683 status = decode_putfh(&xdr);
4686 status = decode_open_downgrade(&xdr, res);
4689 decode_getfattr(&xdr, res->fattr, res->server,
4690 !RPC_IS_ASYNC(rqstp->rq_task));
4696 * Decode ACCESS response
4698 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
4700 struct xdr_stream xdr;
4701 struct compound_hdr hdr;
4704 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4705 status = decode_compound_hdr(&xdr, &hdr);
4708 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4711 status = decode_putfh(&xdr);
4714 status = decode_access(&xdr, res);
4717 decode_getfattr(&xdr, res->fattr, res->server,
4718 !RPC_IS_ASYNC(rqstp->rq_task));
4724 * Decode LOOKUP response
4726 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4728 struct xdr_stream xdr;
4729 struct compound_hdr hdr;
4732 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4733 status = decode_compound_hdr(&xdr, &hdr);
4736 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4739 if ((status = decode_putfh(&xdr)) != 0)
4741 if ((status = decode_lookup(&xdr)) != 0)
4743 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4745 status = decode_getfattr(&xdr, res->fattr, res->server
4746 ,!RPC_IS_ASYNC(rqstp->rq_task));
4752 * Decode LOOKUP_ROOT response
4754 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4756 struct xdr_stream xdr;
4757 struct compound_hdr hdr;
4760 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4761 status = decode_compound_hdr(&xdr, &hdr);
4764 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4767 if ((status = decode_putrootfh(&xdr)) != 0)
4769 if ((status = decode_getfh(&xdr, res->fh)) == 0)
4770 status = decode_getfattr(&xdr, res->fattr, res->server,
4771 !RPC_IS_ASYNC(rqstp->rq_task));
4777 * Decode REMOVE response
4779 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
4781 struct xdr_stream xdr;
4782 struct compound_hdr hdr;
4785 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4786 status = decode_compound_hdr(&xdr, &hdr);
4789 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4792 if ((status = decode_putfh(&xdr)) != 0)
4794 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
4796 decode_getfattr(&xdr, res->dir_attr, res->server,
4797 !RPC_IS_ASYNC(rqstp->rq_task));
4803 * Decode RENAME response
4805 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res)
4807 struct xdr_stream xdr;
4808 struct compound_hdr hdr;
4811 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4812 status = decode_compound_hdr(&xdr, &hdr);
4815 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4818 if ((status = decode_putfh(&xdr)) != 0)
4820 if ((status = decode_savefh(&xdr)) != 0)
4822 if ((status = decode_putfh(&xdr)) != 0)
4824 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4826 /* Current FH is target directory */
4827 if (decode_getfattr(&xdr, res->new_fattr, res->server,
4828 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4830 if ((status = decode_restorefh(&xdr)) != 0)
4832 decode_getfattr(&xdr, res->old_fattr, res->server,
4833 !RPC_IS_ASYNC(rqstp->rq_task));
4839 * Decode LINK response
4841 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4843 struct xdr_stream xdr;
4844 struct compound_hdr hdr;
4847 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4848 status = decode_compound_hdr(&xdr, &hdr);
4851 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4854 if ((status = decode_putfh(&xdr)) != 0)
4856 if ((status = decode_savefh(&xdr)) != 0)
4858 if ((status = decode_putfh(&xdr)) != 0)
4860 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4863 * Note order: OP_LINK leaves the directory as the current
4866 if (decode_getfattr(&xdr, res->dir_attr, res->server,
4867 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4869 if ((status = decode_restorefh(&xdr)) != 0)
4871 decode_getfattr(&xdr, res->fattr, res->server,
4872 !RPC_IS_ASYNC(rqstp->rq_task));
4878 * Decode CREATE response
4880 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4882 struct xdr_stream xdr;
4883 struct compound_hdr hdr;
4886 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4887 status = decode_compound_hdr(&xdr, &hdr);
4890 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4893 if ((status = decode_putfh(&xdr)) != 0)
4895 if ((status = decode_savefh(&xdr)) != 0)
4897 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4899 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4901 if (decode_getfattr(&xdr, res->fattr, res->server,
4902 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
4904 if ((status = decode_restorefh(&xdr)) != 0)
4906 decode_getfattr(&xdr, res->dir_fattr, res->server,
4907 !RPC_IS_ASYNC(rqstp->rq_task));
4913 * Decode SYMLINK response
4915 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4917 return nfs4_xdr_dec_create(rqstp, p, res);
4921 * Decode GETATTR response
4923 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
4925 struct xdr_stream xdr;
4926 struct compound_hdr hdr;
4929 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4930 status = decode_compound_hdr(&xdr, &hdr);
4933 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4936 status = decode_putfh(&xdr);
4939 status = decode_getfattr(&xdr, res->fattr, res->server,
4940 !RPC_IS_ASYNC(rqstp->rq_task));
4946 * Encode an SETACL request
4949 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
4951 struct xdr_stream xdr;
4952 struct compound_hdr hdr = {
4953 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
4957 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
4958 encode_compound_hdr(&xdr, req, &hdr);
4959 encode_sequence(&xdr, &args->seq_args, &hdr);
4960 encode_putfh(&xdr, args->fh, &hdr);
4961 status = encode_setacl(&xdr, args, &hdr);
4967 * Decode SETACL response
4970 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
4971 struct nfs_setaclres *res)
4973 struct xdr_stream xdr;
4974 struct compound_hdr hdr;
4977 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4978 status = decode_compound_hdr(&xdr, &hdr);
4981 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4984 status = decode_putfh(&xdr);
4987 status = decode_setattr(&xdr);
4993 * Decode GETACL response
4996 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
4997 struct nfs_getaclres *res)
4999 struct xdr_stream xdr;
5000 struct compound_hdr hdr;
5003 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5004 status = decode_compound_hdr(&xdr, &hdr);
5007 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5010 status = decode_putfh(&xdr);
5013 status = decode_getacl(&xdr, rqstp, &res->acl_len);
5020 * Decode CLOSE response
5022 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
5024 struct xdr_stream xdr;
5025 struct compound_hdr hdr;
5028 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5029 status = decode_compound_hdr(&xdr, &hdr);
5032 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5035 status = decode_putfh(&xdr);
5038 status = decode_close(&xdr, res);
5042 * Note: Server may do delete on close for this file
5043 * in which case the getattr call will fail with
5044 * an ESTALE error. Shouldn't be a problem,
5045 * though, since fattr->valid will remain unset.
5047 decode_getfattr(&xdr, res->fattr, res->server,
5048 !RPC_IS_ASYNC(rqstp->rq_task));
5054 * Decode OPEN response
5056 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
5058 struct xdr_stream xdr;
5059 struct compound_hdr hdr;
5062 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5063 status = decode_compound_hdr(&xdr, &hdr);
5066 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5069 status = decode_putfh(&xdr);
5072 status = decode_savefh(&xdr);
5075 status = decode_open(&xdr, res);
5078 if (decode_getfh(&xdr, &res->fh) != 0)
5080 if (decode_getfattr(&xdr, res->f_attr, res->server,
5081 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5083 if (decode_restorefh(&xdr) != 0)
5085 decode_getfattr(&xdr, res->dir_attr, res->server,
5086 !RPC_IS_ASYNC(rqstp->rq_task));
5092 * Decode OPEN_CONFIRM response
5094 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
5096 struct xdr_stream xdr;
5097 struct compound_hdr hdr;
5100 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5101 status = decode_compound_hdr(&xdr, &hdr);
5104 status = decode_putfh(&xdr);
5107 status = decode_open_confirm(&xdr, res);
5113 * Decode OPEN response
5115 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
5117 struct xdr_stream xdr;
5118 struct compound_hdr hdr;
5121 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5122 status = decode_compound_hdr(&xdr, &hdr);
5125 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5128 status = decode_putfh(&xdr);
5131 status = decode_open(&xdr, res);
5134 decode_getfattr(&xdr, res->f_attr, res->server,
5135 !RPC_IS_ASYNC(rqstp->rq_task));
5141 * Decode SETATTR response
5143 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
5145 struct xdr_stream xdr;
5146 struct compound_hdr hdr;
5149 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5150 status = decode_compound_hdr(&xdr, &hdr);
5153 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5156 status = decode_putfh(&xdr);
5159 status = decode_setattr(&xdr);
5162 decode_getfattr(&xdr, res->fattr, res->server,
5163 !RPC_IS_ASYNC(rqstp->rq_task));
5169 * Decode LOCK response
5171 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
5173 struct xdr_stream xdr;
5174 struct compound_hdr hdr;
5177 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5178 status = decode_compound_hdr(&xdr, &hdr);
5181 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5184 status = decode_putfh(&xdr);
5187 status = decode_lock(&xdr, res);
5193 * Decode LOCKT response
5195 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
5197 struct xdr_stream xdr;
5198 struct compound_hdr hdr;
5201 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5202 status = decode_compound_hdr(&xdr, &hdr);
5205 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5208 status = decode_putfh(&xdr);
5211 status = decode_lockt(&xdr, res);
5217 * Decode LOCKU response
5219 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
5221 struct xdr_stream xdr;
5222 struct compound_hdr hdr;
5225 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5226 status = decode_compound_hdr(&xdr, &hdr);
5229 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5232 status = decode_putfh(&xdr);
5235 status = decode_locku(&xdr, res);
5240 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5242 struct xdr_stream xdr;
5243 struct compound_hdr hdr;
5246 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5247 status = decode_compound_hdr(&xdr, &hdr);
5249 status = decode_release_lockowner(&xdr);
5254 * Decode READLINK response
5256 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
5257 struct nfs4_readlink_res *res)
5259 struct xdr_stream xdr;
5260 struct compound_hdr hdr;
5263 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5264 status = decode_compound_hdr(&xdr, &hdr);
5267 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5270 status = decode_putfh(&xdr);
5273 status = decode_readlink(&xdr, rqstp);
5279 * Decode READDIR response
5281 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
5283 struct xdr_stream xdr;
5284 struct compound_hdr hdr;
5287 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5288 status = decode_compound_hdr(&xdr, &hdr);
5291 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5294 status = decode_putfh(&xdr);
5297 status = decode_readdir(&xdr, rqstp, res);
5303 * Decode Read response
5305 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
5307 struct xdr_stream xdr;
5308 struct compound_hdr hdr;
5311 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5312 status = decode_compound_hdr(&xdr, &hdr);
5315 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5318 status = decode_putfh(&xdr);
5321 status = decode_read(&xdr, rqstp, res);
5323 status = res->count;
5329 * Decode WRITE response
5331 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5333 struct xdr_stream xdr;
5334 struct compound_hdr hdr;
5337 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5338 status = decode_compound_hdr(&xdr, &hdr);
5341 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5344 status = decode_putfh(&xdr);
5347 status = decode_write(&xdr, res);
5350 decode_getfattr(&xdr, res->fattr, res->server,
5351 !RPC_IS_ASYNC(rqstp->rq_task));
5353 status = res->count;
5359 * Decode COMMIT response
5361 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5363 struct xdr_stream xdr;
5364 struct compound_hdr hdr;
5367 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5368 status = decode_compound_hdr(&xdr, &hdr);
5371 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5374 status = decode_putfh(&xdr);
5377 status = decode_commit(&xdr, res);
5380 decode_getfattr(&xdr, res->fattr, res->server,
5381 !RPC_IS_ASYNC(rqstp->rq_task));
5387 * Decode FSINFO response
5389 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5390 struct nfs4_fsinfo_res *res)
5392 struct xdr_stream xdr;
5393 struct compound_hdr hdr;
5396 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5397 status = decode_compound_hdr(&xdr, &hdr);
5399 status = decode_sequence(&xdr, &res->seq_res, req);
5401 status = decode_putfh(&xdr);
5403 status = decode_fsinfo(&xdr, res->fsinfo);
5408 * Decode PATHCONF response
5410 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5411 struct nfs4_pathconf_res *res)
5413 struct xdr_stream xdr;
5414 struct compound_hdr hdr;
5417 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5418 status = decode_compound_hdr(&xdr, &hdr);
5420 status = decode_sequence(&xdr, &res->seq_res, req);
5422 status = decode_putfh(&xdr);
5424 status = decode_pathconf(&xdr, res->pathconf);
5429 * Decode STATFS response
5431 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5432 struct nfs4_statfs_res *res)
5434 struct xdr_stream xdr;
5435 struct compound_hdr hdr;
5438 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5439 status = decode_compound_hdr(&xdr, &hdr);
5441 status = decode_sequence(&xdr, &res->seq_res, req);
5443 status = decode_putfh(&xdr);
5445 status = decode_statfs(&xdr, res->fsstat);
5450 * Decode GETATTR_BITMAP response
5452 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
5454 struct xdr_stream xdr;
5455 struct compound_hdr hdr;
5458 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5459 status = decode_compound_hdr(&xdr, &hdr);
5462 status = decode_sequence(&xdr, &res->seq_res, req);
5465 if ((status = decode_putfh(&xdr)) != 0)
5467 status = decode_server_caps(&xdr, res);
5473 * Decode RENEW response
5475 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5477 struct xdr_stream xdr;
5478 struct compound_hdr hdr;
5481 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5482 status = decode_compound_hdr(&xdr, &hdr);
5484 status = decode_renew(&xdr);
5489 * Decode SETCLIENTID response
5491 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5492 struct nfs4_setclientid_res *res)
5494 struct xdr_stream xdr;
5495 struct compound_hdr hdr;
5498 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5499 status = decode_compound_hdr(&xdr, &hdr);
5501 status = decode_setclientid(&xdr, res);
5506 * Decode SETCLIENTID_CONFIRM response
5508 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
5510 struct xdr_stream xdr;
5511 struct compound_hdr hdr;
5514 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5515 status = decode_compound_hdr(&xdr, &hdr);
5517 status = decode_setclientid_confirm(&xdr);
5519 status = decode_putrootfh(&xdr);
5521 status = decode_fsinfo(&xdr, fsinfo);
5526 * Decode DELEGRETURN response
5528 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
5530 struct xdr_stream xdr;
5531 struct compound_hdr hdr;
5534 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5535 status = decode_compound_hdr(&xdr, &hdr);
5538 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5541 status = decode_putfh(&xdr);
5544 status = decode_delegreturn(&xdr);
5547 decode_getfattr(&xdr, res->fattr, res->server,
5548 !RPC_IS_ASYNC(rqstp->rq_task));
5554 * Decode FS_LOCATIONS response
5556 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5557 struct nfs4_fs_locations_res *res)
5559 struct xdr_stream xdr;
5560 struct compound_hdr hdr;
5563 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5564 status = decode_compound_hdr(&xdr, &hdr);
5567 status = decode_sequence(&xdr, &res->seq_res, req);
5570 if ((status = decode_putfh(&xdr)) != 0)
5572 if ((status = decode_lookup(&xdr)) != 0)
5574 xdr_enter_page(&xdr, PAGE_SIZE);
5575 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
5576 res->fs_locations->server,
5577 !RPC_IS_ASYNC(req->rq_task));
5582 #if defined(CONFIG_NFS_V4_1)
5584 * Decode EXCHANGE_ID response
5586 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5589 struct xdr_stream xdr;
5590 struct compound_hdr hdr;
5593 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5594 status = decode_compound_hdr(&xdr, &hdr);
5596 status = decode_exchange_id(&xdr, res);
5601 * Decode CREATE_SESSION response
5603 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5604 struct nfs41_create_session_res *res)
5606 struct xdr_stream xdr;
5607 struct compound_hdr hdr;
5610 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5611 status = decode_compound_hdr(&xdr, &hdr);
5613 status = decode_create_session(&xdr, res);
5618 * Decode DESTROY_SESSION response
5620 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5623 struct xdr_stream xdr;
5624 struct compound_hdr hdr;
5627 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5628 status = decode_compound_hdr(&xdr, &hdr);
5630 status = decode_destroy_session(&xdr, dummy);
5635 * Decode SEQUENCE response
5637 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5638 struct nfs4_sequence_res *res)
5640 struct xdr_stream xdr;
5641 struct compound_hdr hdr;
5644 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5645 status = decode_compound_hdr(&xdr, &hdr);
5647 status = decode_sequence(&xdr, res, rqstp);
5652 * Decode GET_LEASE_TIME response
5654 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5655 struct nfs4_get_lease_time_res *res)
5657 struct xdr_stream xdr;
5658 struct compound_hdr hdr;
5661 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5662 status = decode_compound_hdr(&xdr, &hdr);
5664 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
5666 status = decode_putrootfh(&xdr);
5668 status = decode_fsinfo(&xdr, res->lr_fsinfo);
5673 * Decode RECLAIM_COMPLETE response
5675 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
5676 struct nfs41_reclaim_complete_res *res)
5678 struct xdr_stream xdr;
5679 struct compound_hdr hdr;
5682 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5683 status = decode_compound_hdr(&xdr, &hdr);
5685 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5687 status = decode_reclaim_complete(&xdr, (void *)NULL);
5690 #endif /* CONFIG_NFS_V4_1 */
5692 __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, int plus)
5694 uint32_t bitmap[2] = {0};
5696 __be32 *p = xdr_inline_decode(xdr, 4);
5700 p = xdr_inline_decode(xdr, 4);
5704 return ERR_PTR(-EAGAIN);
5706 return ERR_PTR(-EBADCOOKIE);
5709 p = xdr_inline_decode(xdr, 12);
5712 entry->prev_cookie = entry->cookie;
5713 p = xdr_decode_hyper(p, &entry->cookie);
5714 entry->len = ntohl(*p++);
5716 p = xdr_inline_decode(xdr, entry->len + 4);
5719 entry->name = (const char *) p;
5720 p += XDR_QUADLEN(entry->len);
5723 * In case the server doesn't return an inode number,
5724 * we fake one here. (We don't use inode number 0,
5725 * since glibc seems to choke on it...)
5729 len = ntohl(*p++); /* bitmap length */
5731 p = xdr_inline_decode(xdr, 4);
5734 bitmap[0] = ntohl(*p++);
5736 p = xdr_inline_decode(xdr, 4);
5739 bitmap[1] = ntohl(*p++);
5743 p = xdr_inline_decode(xdr, 4);
5746 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
5748 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
5749 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
5750 /* Ignore the return value of rdattr_error for now */
5751 p = xdr_inline_decode(xdr, 4);
5755 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID) {
5756 p = xdr_inline_decode(xdr, 8);
5759 xdr_decode_hyper(p, &entry->ino);
5760 } else if (bitmap[0] == FATTR4_WORD0_FILEID) {
5761 p = xdr_inline_decode(xdr, 8);
5764 xdr_decode_hyper(p, &entry->ino);
5768 p = xdr_inline_peek(xdr, 8);
5770 entry->eof = !p[0] && p[1];
5777 print_overflow_msg(__func__, xdr);
5778 return ERR_PTR(-EIO);
5782 * We need to translate between nfs status return values and
5783 * the local errno values which may not be the same.
5790 { NFS4ERR_PERM, -EPERM },
5791 { NFS4ERR_NOENT, -ENOENT },
5792 { NFS4ERR_IO, -errno_NFSERR_IO},
5793 { NFS4ERR_NXIO, -ENXIO },
5794 { NFS4ERR_ACCESS, -EACCES },
5795 { NFS4ERR_EXIST, -EEXIST },
5796 { NFS4ERR_XDEV, -EXDEV },
5797 { NFS4ERR_NOTDIR, -ENOTDIR },
5798 { NFS4ERR_ISDIR, -EISDIR },
5799 { NFS4ERR_INVAL, -EINVAL },
5800 { NFS4ERR_FBIG, -EFBIG },
5801 { NFS4ERR_NOSPC, -ENOSPC },
5802 { NFS4ERR_ROFS, -EROFS },
5803 { NFS4ERR_MLINK, -EMLINK },
5804 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
5805 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
5806 { NFS4ERR_DQUOT, -EDQUOT },
5807 { NFS4ERR_STALE, -ESTALE },
5808 { NFS4ERR_BADHANDLE, -EBADHANDLE },
5809 { NFS4ERR_BADOWNER, -EINVAL },
5810 { NFS4ERR_BADNAME, -EINVAL },
5811 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
5812 { NFS4ERR_NOTSUPP, -ENOTSUPP },
5813 { NFS4ERR_TOOSMALL, -ETOOSMALL },
5814 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
5815 { NFS4ERR_BADTYPE, -EBADTYPE },
5816 { NFS4ERR_LOCKED, -EAGAIN },
5817 { NFS4ERR_SYMLINK, -ELOOP },
5818 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
5819 { NFS4ERR_DEADLOCK, -EDEADLK },
5820 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
5821 * to be handled by a
5828 * Convert an NFS error code to a local one.
5829 * This one is used jointly by NFSv2 and NFSv3.
5832 nfs4_stat_to_errno(int stat)
5835 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
5836 if (nfs_errtbl[i].stat == stat)
5837 return nfs_errtbl[i].errno;
5839 if (stat <= 10000 || stat > 10100) {
5840 /* The server is looney tunes. */
5843 /* If we cannot translate the error, the recovery routines should
5845 * Note: remaining NFSv4 error codes have values > 10000, so should
5846 * not conflict with native Linux error codes.
5851 #define PROC(proc, argtype, restype) \
5852 [NFSPROC4_CLNT_##proc] = { \
5853 .p_proc = NFSPROC4_COMPOUND, \
5854 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
5855 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
5856 .p_arglen = NFS4_##argtype##_sz, \
5857 .p_replen = NFS4_##restype##_sz, \
5858 .p_statidx = NFSPROC4_CLNT_##proc, \
5862 struct rpc_procinfo nfs4_procedures[] = {
5863 PROC(READ, enc_read, dec_read),
5864 PROC(WRITE, enc_write, dec_write),
5865 PROC(COMMIT, enc_commit, dec_commit),
5866 PROC(OPEN, enc_open, dec_open),
5867 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
5868 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
5869 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
5870 PROC(CLOSE, enc_close, dec_close),
5871 PROC(SETATTR, enc_setattr, dec_setattr),
5872 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
5873 PROC(RENEW, enc_renew, dec_renew),
5874 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
5875 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
5876 PROC(LOCK, enc_lock, dec_lock),
5877 PROC(LOCKT, enc_lockt, dec_lockt),
5878 PROC(LOCKU, enc_locku, dec_locku),
5879 PROC(ACCESS, enc_access, dec_access),
5880 PROC(GETATTR, enc_getattr, dec_getattr),
5881 PROC(LOOKUP, enc_lookup, dec_lookup),
5882 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
5883 PROC(REMOVE, enc_remove, dec_remove),
5884 PROC(RENAME, enc_rename, dec_rename),
5885 PROC(LINK, enc_link, dec_link),
5886 PROC(SYMLINK, enc_symlink, dec_symlink),
5887 PROC(CREATE, enc_create, dec_create),
5888 PROC(PATHCONF, enc_pathconf, dec_pathconf),
5889 PROC(STATFS, enc_statfs, dec_statfs),
5890 PROC(READLINK, enc_readlink, dec_readlink),
5891 PROC(READDIR, enc_readdir, dec_readdir),
5892 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
5893 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
5894 PROC(GETACL, enc_getacl, dec_getacl),
5895 PROC(SETACL, enc_setacl, dec_setacl),
5896 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
5897 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
5898 #if defined(CONFIG_NFS_V4_1)
5899 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
5900 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
5901 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
5902 PROC(SEQUENCE, enc_sequence, dec_sequence),
5903 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5904 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
5905 #endif /* CONFIG_NFS_V4_1 */
5908 struct rpc_version nfs_version4 = {
5910 .nrprocs = ARRAY_SIZE(nfs4_procedures),
5911 .procs = nfs4_procedures