4 * Client-side XDR for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 #include <linux/param.h>
39 #include <linux/time.h>
41 #include <linux/slab.h>
42 #include <linux/utsname.h>
43 #include <linux/errno.h>
44 #include <linux/string.h>
46 #include <linux/pagemap.h>
47 #include <linux/proc_fs.h>
48 #include <linux/kdev_t.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/nfs.h>
51 #include <linux/nfs4.h>
52 #include <linux/nfs_fs.h>
53 #include <linux/nfs_idmap.h>
56 #define NFSDBG_FACILITY NFSDBG_XDR
58 /* Mapping from NFS error code to "errno" error code. */
59 #define errno_NFSERR_IO EIO
61 static int nfs4_stat_to_errno(int);
63 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
65 #define NFS4_MAXTAGLEN 20
67 #define NFS4_MAXTAGLEN 0
70 /* lock,open owner id:
71 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
73 #define open_owner_id_maxsz (1 + 4)
74 #define lock_owner_id_maxsz (1 + 4)
75 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
76 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
77 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
78 #define op_encode_hdr_maxsz (1)
79 #define op_decode_hdr_maxsz (2)
80 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
81 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
82 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
83 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
84 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
86 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
87 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
88 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
89 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
90 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
91 ((3+NFS4_FHSIZE) >> 2))
92 #define nfs4_fattr_bitmap_maxsz 3
93 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
94 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
95 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
96 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
97 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
98 /* This is based on getfattr, which uses the most attributes: */
99 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
100 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
101 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
102 nfs4_fattr_value_maxsz)
103 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
104 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
109 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
110 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
111 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
112 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
113 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
114 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
115 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
116 #define decode_renew_maxsz (op_decode_hdr_maxsz)
117 #define encode_setclientid_maxsz \
118 (op_encode_hdr_maxsz + \
119 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
120 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
122 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
123 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
125 #define decode_setclientid_maxsz \
126 (op_decode_hdr_maxsz + \
128 1024) /* large value for CLID_INUSE */
129 #define encode_setclientid_confirm_maxsz \
130 (op_encode_hdr_maxsz + \
131 3 + (NFS4_VERIFIER_SIZE >> 2))
132 #define decode_setclientid_confirm_maxsz \
133 (op_decode_hdr_maxsz)
134 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
135 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
136 #define encode_share_access_maxsz \
138 #define encode_createmode_maxsz (1 + encode_attrs_maxsz)
139 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
140 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
141 #define encode_open_maxsz (op_encode_hdr_maxsz + \
142 2 + encode_share_access_maxsz + 2 + \
143 open_owner_id_maxsz + \
144 encode_opentype_maxsz + \
145 encode_claim_null_maxsz)
146 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
147 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
149 #define decode_change_info_maxsz (5)
150 #define decode_open_maxsz (op_decode_hdr_maxsz + \
151 decode_stateid_maxsz + \
152 decode_change_info_maxsz + 1 + \
153 nfs4_fattr_bitmap_maxsz + \
154 decode_delegation_maxsz)
155 #define encode_open_confirm_maxsz \
156 (op_encode_hdr_maxsz + \
157 encode_stateid_maxsz + 1)
158 #define decode_open_confirm_maxsz \
159 (op_decode_hdr_maxsz + \
160 decode_stateid_maxsz)
161 #define encode_open_downgrade_maxsz \
162 (op_encode_hdr_maxsz + \
163 encode_stateid_maxsz + 1 + \
164 encode_share_access_maxsz)
165 #define decode_open_downgrade_maxsz \
166 (op_decode_hdr_maxsz + \
167 decode_stateid_maxsz)
168 #define encode_close_maxsz (op_encode_hdr_maxsz + \
169 1 + encode_stateid_maxsz)
170 #define decode_close_maxsz (op_decode_hdr_maxsz + \
171 decode_stateid_maxsz)
172 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
173 encode_stateid_maxsz + \
175 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
176 nfs4_fattr_bitmap_maxsz)
177 #define encode_read_maxsz (op_encode_hdr_maxsz + \
178 encode_stateid_maxsz + 3)
179 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
180 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
181 2 + encode_verifier_maxsz + 5)
182 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
183 decode_verifier_maxsz)
184 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
185 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
186 #define encode_write_maxsz (op_encode_hdr_maxsz + \
187 encode_stateid_maxsz + 4)
188 #define decode_write_maxsz (op_decode_hdr_maxsz + \
189 2 + decode_verifier_maxsz)
190 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
191 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
192 decode_verifier_maxsz)
193 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
195 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
196 decode_change_info_maxsz)
197 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
199 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
200 decode_change_info_maxsz + \
201 decode_change_info_maxsz)
202 #define encode_link_maxsz (op_encode_hdr_maxsz + \
204 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
205 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
207 1 + encode_stateid_maxsz + 8)
208 #define decode_lock_denied_maxsz \
209 (8 + decode_lockowner_maxsz)
210 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
211 decode_lock_denied_maxsz)
212 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 12)
213 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
214 decode_lock_denied_maxsz)
215 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
216 encode_stateid_maxsz + \
218 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
219 decode_stateid_maxsz)
220 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
221 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
222 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
223 1 + nfs4_name_maxsz + \
226 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
227 #define encode_create_maxsz (op_encode_hdr_maxsz + \
228 1 + 2 + nfs4_name_maxsz + \
230 #define decode_create_maxsz (op_decode_hdr_maxsz + \
231 decode_change_info_maxsz + \
232 nfs4_fattr_bitmap_maxsz)
233 #define encode_statfs_maxsz (encode_getattr_maxsz)
234 #define decode_statfs_maxsz (decode_getattr_maxsz)
235 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
236 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
237 #define encode_getacl_maxsz (encode_getattr_maxsz)
238 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
239 nfs4_fattr_bitmap_maxsz + 1)
240 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
241 encode_stateid_maxsz + 3)
242 #define decode_setacl_maxsz (decode_setattr_maxsz)
243 #define encode_fs_locations_maxsz \
244 (encode_getattr_maxsz)
245 #define decode_fs_locations_maxsz \
248 #if defined(CONFIG_NFS_V4_1)
249 #define NFS4_MAX_MACHINE_NAME_LEN (64)
251 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
252 encode_verifier_maxsz + \
253 1 /* co_ownerid.len */ + \
254 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
257 0 /* SP4_NONE (for now) */ + \
258 1 /* zero implemetation id array */)
259 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
260 2 /* eir_clientid */ + \
261 1 /* eir_sequenceid */ + \
262 1 /* eir_flags */ + \
264 0 /* SP4_NONE (for now) */ + \
265 2 /* eir_server_owner.so_minor_id */ + \
266 /* eir_server_owner.so_major_id<> */ \
267 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
268 /* eir_server_scope<> */ \
269 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
270 1 /* eir_server_impl_id array length */ + \
271 0 /* ignored eir_server_impl_id contents */)
272 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
273 #define decode_channel_attrs_maxsz (6 + \
274 1 /* ca_rdma_ird.len */ + \
276 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
277 2 /* csa_clientid */ + \
278 1 /* csa_sequence */ + \
279 1 /* csa_flags */ + \
280 encode_channel_attrs_maxsz + \
281 encode_channel_attrs_maxsz + \
282 1 /* csa_cb_program */ + \
283 1 /* csa_sec_parms.len (1) */ + \
284 1 /* cb_secflavor (AUTH_SYS) */ + \
286 1 /* machinename.len */ + \
287 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
290 1 /* gids.len (0) */)
291 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
292 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
293 1 /* csr_sequence */ + \
294 1 /* csr_flags */ + \
295 decode_channel_attrs_maxsz + \
296 decode_channel_attrs_maxsz)
297 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
298 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
299 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
300 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
301 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
302 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
303 #else /* CONFIG_NFS_V4_1 */
304 #define encode_sequence_maxsz 0
305 #define decode_sequence_maxsz 0
306 #endif /* CONFIG_NFS_V4_1 */
308 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
309 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
310 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
311 encode_sequence_maxsz + \
312 encode_putfh_maxsz + \
314 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
315 decode_sequence_maxsz + \
316 decode_putfh_maxsz + \
318 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
319 encode_sequence_maxsz + \
320 encode_putfh_maxsz + \
321 encode_readlink_maxsz)
322 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
323 decode_sequence_maxsz + \
324 decode_putfh_maxsz + \
325 decode_readlink_maxsz)
326 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
327 encode_sequence_maxsz + \
328 encode_putfh_maxsz + \
329 encode_readdir_maxsz)
330 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
331 decode_sequence_maxsz + \
332 decode_putfh_maxsz + \
333 decode_readdir_maxsz)
334 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
335 encode_sequence_maxsz + \
336 encode_putfh_maxsz + \
337 encode_write_maxsz + \
338 encode_getattr_maxsz)
339 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
340 decode_sequence_maxsz + \
341 decode_putfh_maxsz + \
342 decode_write_maxsz + \
343 decode_getattr_maxsz)
344 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
345 encode_sequence_maxsz + \
346 encode_putfh_maxsz + \
347 encode_commit_maxsz + \
348 encode_getattr_maxsz)
349 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
350 decode_sequence_maxsz + \
351 decode_putfh_maxsz + \
352 decode_commit_maxsz + \
353 decode_getattr_maxsz)
354 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
355 encode_sequence_maxsz + \
356 encode_putfh_maxsz + \
357 encode_savefh_maxsz + \
358 encode_open_maxsz + \
359 encode_getfh_maxsz + \
360 encode_getattr_maxsz + \
361 encode_restorefh_maxsz + \
362 encode_getattr_maxsz)
363 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
364 decode_sequence_maxsz + \
365 decode_putfh_maxsz + \
366 decode_savefh_maxsz + \
367 decode_open_maxsz + \
368 decode_getfh_maxsz + \
369 decode_getattr_maxsz + \
370 decode_restorefh_maxsz + \
371 decode_getattr_maxsz)
372 #define NFS4_enc_open_confirm_sz \
373 (compound_encode_hdr_maxsz + \
374 encode_putfh_maxsz + \
375 encode_open_confirm_maxsz)
376 #define NFS4_dec_open_confirm_sz \
377 (compound_decode_hdr_maxsz + \
378 decode_putfh_maxsz + \
379 decode_open_confirm_maxsz)
380 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
381 encode_sequence_maxsz + \
382 encode_putfh_maxsz + \
383 encode_open_maxsz + \
384 encode_getattr_maxsz)
385 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
386 decode_sequence_maxsz + \
387 decode_putfh_maxsz + \
388 decode_open_maxsz + \
389 decode_getattr_maxsz)
390 #define NFS4_enc_open_downgrade_sz \
391 (compound_encode_hdr_maxsz + \
392 encode_sequence_maxsz + \
393 encode_putfh_maxsz + \
394 encode_open_downgrade_maxsz + \
395 encode_getattr_maxsz)
396 #define NFS4_dec_open_downgrade_sz \
397 (compound_decode_hdr_maxsz + \
398 decode_sequence_maxsz + \
399 decode_putfh_maxsz + \
400 decode_open_downgrade_maxsz + \
401 decode_getattr_maxsz)
402 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
403 encode_sequence_maxsz + \
404 encode_putfh_maxsz + \
405 encode_close_maxsz + \
406 encode_getattr_maxsz)
407 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
408 decode_sequence_maxsz + \
409 decode_putfh_maxsz + \
410 decode_close_maxsz + \
411 decode_getattr_maxsz)
412 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
413 encode_sequence_maxsz + \
414 encode_putfh_maxsz + \
415 encode_setattr_maxsz + \
416 encode_getattr_maxsz)
417 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
418 decode_sequence_maxsz + \
419 decode_putfh_maxsz + \
420 decode_setattr_maxsz + \
421 decode_getattr_maxsz)
422 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
423 encode_sequence_maxsz + \
424 encode_putfh_maxsz + \
426 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
427 decode_sequence_maxsz + \
428 decode_putfh_maxsz + \
430 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
432 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
434 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
435 encode_setclientid_maxsz)
436 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
437 decode_setclientid_maxsz)
438 #define NFS4_enc_setclientid_confirm_sz \
439 (compound_encode_hdr_maxsz + \
440 encode_setclientid_confirm_maxsz + \
441 encode_putrootfh_maxsz + \
443 #define NFS4_dec_setclientid_confirm_sz \
444 (compound_decode_hdr_maxsz + \
445 decode_setclientid_confirm_maxsz + \
446 decode_putrootfh_maxsz + \
448 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
449 encode_sequence_maxsz + \
450 encode_putfh_maxsz + \
452 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
453 decode_sequence_maxsz + \
454 decode_putfh_maxsz + \
456 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
457 encode_sequence_maxsz + \
458 encode_putfh_maxsz + \
460 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
461 decode_sequence_maxsz + \
462 decode_putfh_maxsz + \
464 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
465 encode_sequence_maxsz + \
466 encode_putfh_maxsz + \
468 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
469 decode_sequence_maxsz + \
470 decode_putfh_maxsz + \
472 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
473 encode_sequence_maxsz + \
474 encode_putfh_maxsz + \
475 encode_access_maxsz + \
476 encode_getattr_maxsz)
477 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
478 decode_sequence_maxsz + \
479 decode_putfh_maxsz + \
480 decode_access_maxsz + \
481 decode_getattr_maxsz)
482 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
483 encode_sequence_maxsz + \
484 encode_putfh_maxsz + \
485 encode_getattr_maxsz)
486 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
487 decode_sequence_maxsz + \
488 decode_putfh_maxsz + \
489 decode_getattr_maxsz)
490 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
491 encode_sequence_maxsz + \
492 encode_putfh_maxsz + \
493 encode_lookup_maxsz + \
494 encode_getattr_maxsz + \
496 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
497 decode_sequence_maxsz + \
498 decode_putfh_maxsz + \
499 decode_lookup_maxsz + \
500 decode_getattr_maxsz + \
502 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
503 encode_sequence_maxsz + \
504 encode_putrootfh_maxsz + \
505 encode_getattr_maxsz + \
507 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
508 decode_sequence_maxsz + \
509 decode_putrootfh_maxsz + \
510 decode_getattr_maxsz + \
512 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
513 encode_sequence_maxsz + \
514 encode_putfh_maxsz + \
515 encode_remove_maxsz + \
516 encode_getattr_maxsz)
517 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
518 decode_sequence_maxsz + \
519 decode_putfh_maxsz + \
520 decode_remove_maxsz + \
521 decode_getattr_maxsz)
522 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
523 encode_sequence_maxsz + \
524 encode_putfh_maxsz + \
525 encode_savefh_maxsz + \
526 encode_putfh_maxsz + \
527 encode_rename_maxsz + \
528 encode_getattr_maxsz + \
529 encode_restorefh_maxsz + \
530 encode_getattr_maxsz)
531 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
532 decode_sequence_maxsz + \
533 decode_putfh_maxsz + \
534 decode_savefh_maxsz + \
535 decode_putfh_maxsz + \
536 decode_rename_maxsz + \
537 decode_getattr_maxsz + \
538 decode_restorefh_maxsz + \
539 decode_getattr_maxsz)
540 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
541 encode_sequence_maxsz + \
542 encode_putfh_maxsz + \
543 encode_savefh_maxsz + \
544 encode_putfh_maxsz + \
545 encode_link_maxsz + \
546 decode_getattr_maxsz + \
547 encode_restorefh_maxsz + \
548 decode_getattr_maxsz)
549 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
550 decode_sequence_maxsz + \
551 decode_putfh_maxsz + \
552 decode_savefh_maxsz + \
553 decode_putfh_maxsz + \
554 decode_link_maxsz + \
555 decode_getattr_maxsz + \
556 decode_restorefh_maxsz + \
557 decode_getattr_maxsz)
558 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
559 encode_sequence_maxsz + \
560 encode_putfh_maxsz + \
561 encode_symlink_maxsz + \
562 encode_getattr_maxsz + \
564 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
565 decode_sequence_maxsz + \
566 decode_putfh_maxsz + \
567 decode_symlink_maxsz + \
568 decode_getattr_maxsz + \
570 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
571 encode_sequence_maxsz + \
572 encode_putfh_maxsz + \
573 encode_savefh_maxsz + \
574 encode_create_maxsz + \
575 encode_getfh_maxsz + \
576 encode_getattr_maxsz + \
577 encode_restorefh_maxsz + \
578 encode_getattr_maxsz)
579 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
580 decode_sequence_maxsz + \
581 decode_putfh_maxsz + \
582 decode_savefh_maxsz + \
583 decode_create_maxsz + \
584 decode_getfh_maxsz + \
585 decode_getattr_maxsz + \
586 decode_restorefh_maxsz + \
587 decode_getattr_maxsz)
588 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
589 encode_sequence_maxsz + \
590 encode_putfh_maxsz + \
591 encode_getattr_maxsz)
592 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
593 decode_sequence_maxsz + \
594 decode_putfh_maxsz + \
595 decode_getattr_maxsz)
596 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
597 encode_sequence_maxsz + \
598 encode_putfh_maxsz + \
600 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
601 decode_sequence_maxsz + \
602 decode_putfh_maxsz + \
604 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
605 encode_sequence_maxsz + \
606 encode_putfh_maxsz + \
607 encode_getattr_maxsz)
608 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_getattr_maxsz)
612 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
615 encode_delegreturn_maxsz + \
616 encode_getattr_maxsz)
617 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
618 decode_sequence_maxsz + \
619 decode_delegreturn_maxsz + \
620 decode_getattr_maxsz)
621 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
622 encode_sequence_maxsz + \
623 encode_putfh_maxsz + \
625 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
626 decode_sequence_maxsz + \
627 decode_putfh_maxsz + \
629 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
633 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
634 decode_sequence_maxsz + \
635 decode_putfh_maxsz + \
637 #define NFS4_enc_fs_locations_sz \
638 (compound_encode_hdr_maxsz + \
639 encode_sequence_maxsz + \
640 encode_putfh_maxsz + \
641 encode_lookup_maxsz + \
642 encode_fs_locations_maxsz)
643 #define NFS4_dec_fs_locations_sz \
644 (compound_decode_hdr_maxsz + \
645 decode_sequence_maxsz + \
646 decode_putfh_maxsz + \
647 decode_lookup_maxsz + \
648 decode_fs_locations_maxsz)
649 #if defined(CONFIG_NFS_V4_1)
650 #define NFS4_enc_exchange_id_sz \
651 (compound_encode_hdr_maxsz + \
652 encode_exchange_id_maxsz)
653 #define NFS4_dec_exchange_id_sz \
654 (compound_decode_hdr_maxsz + \
655 decode_exchange_id_maxsz)
656 #define NFS4_enc_create_session_sz \
657 (compound_encode_hdr_maxsz + \
658 encode_create_session_maxsz)
659 #define NFS4_dec_create_session_sz \
660 (compound_decode_hdr_maxsz + \
661 decode_create_session_maxsz)
662 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
663 encode_destroy_session_maxsz)
664 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
665 decode_destroy_session_maxsz)
666 #define NFS4_enc_sequence_sz \
667 (compound_decode_hdr_maxsz + \
668 encode_sequence_maxsz)
669 #define NFS4_dec_sequence_sz \
670 (compound_decode_hdr_maxsz + \
671 decode_sequence_maxsz)
672 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
673 encode_sequence_maxsz + \
674 encode_putrootfh_maxsz + \
676 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
677 decode_sequence_maxsz + \
678 decode_putrootfh_maxsz + \
680 #endif /* CONFIG_NFS_V4_1 */
682 static const umode_t nfs_type2fmt[] = {
689 [NF4SOCK] = S_IFSOCK,
695 struct compound_hdr {
701 uint32_t replen; /* expected reply words */
706 * START OF "GENERIC" ENCODE ROUTINES.
707 * These may look a little ugly since they are imported from a "generic"
708 * set of XDR encode/decode routines which are intended to be shared by
709 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
711 * If the pain of reading these is too great, it should be a straightforward
712 * task to translate them into Linux-specific versions which are more
713 * consistent with the style used in NFSv2/v3...
715 #define WRITEMEM(ptr,nbytes) do { \
716 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
719 #define RESERVE_SPACE(nbytes) do { \
720 p = xdr_reserve_space(xdr, nbytes); \
724 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
728 p = xdr_reserve_space(xdr, 4 + len);
730 xdr_encode_opaque(p, str, len);
733 static void encode_compound_hdr(struct xdr_stream *xdr,
734 struct rpc_rqst *req,
735 struct compound_hdr *hdr)
738 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
740 /* initialize running count of expected bytes in reply.
741 * NOTE: the replied tag SHOULD be the same is the one sent,
742 * but this is not required as a MUST for the server to do so. */
743 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
745 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
746 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
747 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
748 *p++ = cpu_to_be32(hdr->taglen);
749 WRITEMEM(hdr->tag, hdr->taglen);
750 *p++ = cpu_to_be32(hdr->minorversion);
752 *p++ = cpu_to_be32(hdr->nops);
755 static void encode_nops(struct compound_hdr *hdr)
757 BUG_ON(hdr->nops > NFS4_MAX_OPS);
758 *hdr->nops_p = htonl(hdr->nops);
761 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
765 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
767 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
770 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
772 char owner_name[IDMAP_NAMESZ];
773 char owner_group[IDMAP_NAMESZ];
774 int owner_namelen = 0;
775 int owner_grouplen = 0;
783 * We reserve enough space to write the entire attribute buffer at once.
784 * In the worst-case, this would be
785 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
786 * = 36 bytes, plus any contribution from variable-length fields
787 * such as owner/group.
792 if (iap->ia_valid & ATTR_SIZE)
794 if (iap->ia_valid & ATTR_MODE)
796 if (iap->ia_valid & ATTR_UID) {
797 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
798 if (owner_namelen < 0) {
799 dprintk("nfs: couldn't resolve uid %d to string\n",
802 strcpy(owner_name, "nobody");
803 owner_namelen = sizeof("nobody") - 1;
806 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
808 if (iap->ia_valid & ATTR_GID) {
809 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
810 if (owner_grouplen < 0) {
811 dprintk("nfs: couldn't resolve gid %d to string\n",
813 strcpy(owner_group, "nobody");
814 owner_grouplen = sizeof("nobody") - 1;
817 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
819 if (iap->ia_valid & ATTR_ATIME_SET)
821 else if (iap->ia_valid & ATTR_ATIME)
823 if (iap->ia_valid & ATTR_MTIME_SET)
825 else if (iap->ia_valid & ATTR_MTIME)
830 * We write the bitmap length now, but leave the bitmap and the attribute
831 * buffer length to be backfilled at the end of this routine.
833 *p++ = cpu_to_be32(2);
837 if (iap->ia_valid & ATTR_SIZE) {
838 bmval0 |= FATTR4_WORD0_SIZE;
839 p = xdr_encode_hyper(p, iap->ia_size);
841 if (iap->ia_valid & ATTR_MODE) {
842 bmval1 |= FATTR4_WORD1_MODE;
843 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
845 if (iap->ia_valid & ATTR_UID) {
846 bmval1 |= FATTR4_WORD1_OWNER;
847 *p++ = cpu_to_be32(owner_namelen);
848 WRITEMEM(owner_name, owner_namelen);
850 if (iap->ia_valid & ATTR_GID) {
851 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
852 *p++ = cpu_to_be32(owner_grouplen);
853 WRITEMEM(owner_group, owner_grouplen);
855 if (iap->ia_valid & ATTR_ATIME_SET) {
856 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
857 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
858 *p++ = cpu_to_be32(0);
859 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
860 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
862 else if (iap->ia_valid & ATTR_ATIME) {
863 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
864 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
866 if (iap->ia_valid & ATTR_MTIME_SET) {
867 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
868 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
869 *p++ = cpu_to_be32(0);
870 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
871 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
873 else if (iap->ia_valid & ATTR_MTIME) {
874 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
875 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
879 * Now we backfill the bitmap and the attribute buffer length.
881 if (len != ((char *)p - (char *)q) + 4) {
882 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
883 len, ((char *)p - (char *)q) + 4);
886 len = (char *)p - (char *)q - 12;
887 *q++ = htonl(bmval0);
888 *q++ = htonl(bmval1);
894 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
899 *p++ = cpu_to_be32(OP_ACCESS);
900 *p++ = cpu_to_be32(access);
902 hdr->replen += decode_access_maxsz;
905 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
909 RESERVE_SPACE(8+NFS4_STATEID_SIZE);
910 *p++ = cpu_to_be32(OP_CLOSE);
911 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
912 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
914 hdr->replen += decode_close_maxsz;
917 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
922 *p++ = cpu_to_be32(OP_COMMIT);
923 p = xdr_encode_hyper(p, args->offset);
924 *p++ = cpu_to_be32(args->count);
926 hdr->replen += decode_commit_maxsz;
929 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
934 *p++ = cpu_to_be32(OP_CREATE);
935 *p++ = cpu_to_be32(create->ftype);
937 switch (create->ftype) {
940 *p++ = cpu_to_be32(create->u.symlink.len);
941 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
944 case NF4BLK: case NF4CHR:
946 *p++ = cpu_to_be32(create->u.device.specdata1);
947 *p++ = cpu_to_be32(create->u.device.specdata2);
954 RESERVE_SPACE(4 + create->name->len);
955 *p++ = cpu_to_be32(create->name->len);
956 WRITEMEM(create->name->name, create->name->len);
958 hdr->replen += decode_create_maxsz;
960 encode_attrs(xdr, create->attrs, create->server);
963 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
968 *p++ = cpu_to_be32(OP_GETATTR);
969 *p++ = cpu_to_be32(1);
970 *p++ = cpu_to_be32(bitmap);
972 hdr->replen += decode_getattr_maxsz;
975 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
980 *p++ = cpu_to_be32(OP_GETATTR);
981 *p++ = cpu_to_be32(2);
982 *p++ = cpu_to_be32(bm0);
983 *p++ = cpu_to_be32(bm1);
985 hdr->replen += decode_getattr_maxsz;
988 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
990 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
991 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
994 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
996 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
997 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
1000 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1002 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1003 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1006 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1011 *p++ = cpu_to_be32(OP_GETFH);
1013 hdr->replen += decode_getfh_maxsz;
1016 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1020 RESERVE_SPACE(8 + name->len);
1021 *p++ = cpu_to_be32(OP_LINK);
1022 *p++ = cpu_to_be32(name->len);
1023 WRITEMEM(name->name, name->len);
1025 hdr->replen += decode_link_maxsz;
1028 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1030 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1031 return block ? NFS4_READW_LT : NFS4_READ_LT;
1032 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1035 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1037 if (fl->fl_end == OFFSET_MAX)
1038 return ~(uint64_t)0;
1039 return fl->fl_end - fl->fl_start + 1;
1043 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1044 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1046 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1051 *p++ = cpu_to_be32(OP_LOCK);
1052 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1053 *p++ = cpu_to_be32(args->reclaim);
1054 p = xdr_encode_hyper(p, args->fl->fl_start);
1055 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1056 *p++ = cpu_to_be32(args->new_lock_owner);
1057 if (args->new_lock_owner){
1058 RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
1059 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1060 WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
1061 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1062 p = xdr_encode_hyper(p, args->lock_owner.clientid);
1063 *p++ = cpu_to_be32(16);
1064 WRITEMEM("lock id:", 8);
1065 p = xdr_encode_hyper(p, args->lock_owner.id);
1068 RESERVE_SPACE(NFS4_STATEID_SIZE+4);
1069 WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
1070 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1073 hdr->replen += decode_lock_maxsz;
1076 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1081 *p++ = cpu_to_be32(OP_LOCKT);
1082 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1083 p = xdr_encode_hyper(p, args->fl->fl_start);
1084 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1085 p = xdr_encode_hyper(p, args->lock_owner.clientid);
1086 *p++ = cpu_to_be32(16);
1087 WRITEMEM("lock id:", 8);
1088 p = xdr_encode_hyper(p, args->lock_owner.id);
1090 hdr->replen += decode_lockt_maxsz;
1093 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1097 RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
1098 *p++ = cpu_to_be32(OP_LOCKU);
1099 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1100 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1101 WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
1102 p = xdr_encode_hyper(p, args->fl->fl_start);
1103 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1105 hdr->replen += decode_locku_maxsz;
1108 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1110 int len = name->len;
1113 RESERVE_SPACE(8 + len);
1114 *p++ = cpu_to_be32(OP_LOOKUP);
1115 *p++ = cpu_to_be32(len);
1116 WRITEMEM(name->name, len);
1118 hdr->replen += decode_lookup_maxsz;
1121 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1126 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1128 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1131 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1133 case FMODE_READ|FMODE_WRITE:
1134 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1137 *p++ = cpu_to_be32(0);
1139 *p++ = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1142 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1146 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1150 *p++ = cpu_to_be32(OP_OPEN);
1151 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1152 encode_share_access(xdr, arg->fmode);
1154 p = xdr_encode_hyper(p, arg->clientid);
1155 *p++ = cpu_to_be32(16);
1156 WRITEMEM("open id:", 8);
1157 p = xdr_encode_hyper(p, arg->id);
1160 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1165 switch(arg->open_flags & O_EXCL) {
1167 *p++ = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1168 encode_attrs(xdr, arg->u.attrs, arg->server);
1171 *p++ = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1172 encode_nfs4_verifier(xdr, &arg->u.verifier);
1176 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1181 switch (arg->open_flags & O_CREAT) {
1183 *p++ = cpu_to_be32(NFS4_OPEN_NOCREATE);
1186 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1187 *p++ = cpu_to_be32(NFS4_OPEN_CREATE);
1188 encode_createmode(xdr, arg);
1192 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1197 switch (delegation_type) {
1199 *p++ = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1202 *p++ = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1204 case FMODE_WRITE|FMODE_READ:
1205 *p++ = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1212 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1217 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1218 encode_string(xdr, name->len, name->name);
1221 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1226 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1227 encode_delegation_type(xdr, type);
1230 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1234 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1235 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1236 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1237 encode_string(xdr, name->len, name->name);
1240 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1242 encode_openhdr(xdr, arg);
1243 encode_opentype(xdr, arg);
1244 switch (arg->claim) {
1245 case NFS4_OPEN_CLAIM_NULL:
1246 encode_claim_null(xdr, arg->name);
1248 case NFS4_OPEN_CLAIM_PREVIOUS:
1249 encode_claim_previous(xdr, arg->u.delegation_type);
1251 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1252 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1258 hdr->replen += decode_open_maxsz;
1261 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1265 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1266 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1267 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1268 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1270 hdr->replen += decode_open_confirm_maxsz;
1273 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1277 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1278 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1279 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1280 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1281 encode_share_access(xdr, arg->fmode);
1283 hdr->replen += decode_open_downgrade_maxsz;
1287 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1292 RESERVE_SPACE(8 + len);
1293 *p++ = cpu_to_be32(OP_PUTFH);
1294 *p++ = cpu_to_be32(len);
1295 WRITEMEM(fh->data, len);
1297 hdr->replen += decode_putfh_maxsz;
1300 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1305 *p++ = cpu_to_be32(OP_PUTROOTFH);
1307 hdr->replen += decode_putrootfh_maxsz;
1310 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1312 nfs4_stateid stateid;
1315 RESERVE_SPACE(NFS4_STATEID_SIZE);
1316 if (ctx->state != NULL) {
1317 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1318 WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
1320 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1323 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1328 *p++ = cpu_to_be32(OP_READ);
1330 encode_stateid(xdr, args->context);
1333 p = xdr_encode_hyper(p, args->offset);
1334 *p++ = cpu_to_be32(args->count);
1336 hdr->replen += decode_read_maxsz;
1339 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1341 uint32_t attrs[2] = {
1342 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1343 FATTR4_WORD1_MOUNTED_ON_FILEID,
1347 RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
1348 *p++ = cpu_to_be32(OP_READDIR);
1349 p = xdr_encode_hyper(p, readdir->cookie);
1350 WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
1351 *p++ = cpu_to_be32(readdir->count >> 1); /* We're not doing readdirplus */
1352 *p++ = cpu_to_be32(readdir->count);
1353 *p++ = cpu_to_be32(2);
1354 /* Switch to mounted_on_fileid if the server supports it */
1355 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1356 attrs[0] &= ~FATTR4_WORD0_FILEID;
1358 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1359 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1360 *p++ = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1362 hdr->replen += decode_readdir_maxsz;
1363 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1365 (unsigned long long)readdir->cookie,
1366 ((u32 *)readdir->verifier.data)[0],
1367 ((u32 *)readdir->verifier.data)[1],
1368 attrs[0] & readdir->bitmask[0],
1369 attrs[1] & readdir->bitmask[1]);
1372 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1377 *p++ = cpu_to_be32(OP_READLINK);
1379 hdr->replen += decode_readlink_maxsz;
1382 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1386 RESERVE_SPACE(8 + name->len);
1387 *p++ = cpu_to_be32(OP_REMOVE);
1388 *p++ = cpu_to_be32(name->len);
1389 WRITEMEM(name->name, name->len);
1391 hdr->replen += decode_remove_maxsz;
1394 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1398 RESERVE_SPACE(8 + oldname->len);
1399 *p++ = cpu_to_be32(OP_RENAME);
1400 *p++ = cpu_to_be32(oldname->len);
1401 WRITEMEM(oldname->name, oldname->len);
1403 RESERVE_SPACE(4 + newname->len);
1404 *p++ = cpu_to_be32(newname->len);
1405 WRITEMEM(newname->name, newname->len);
1407 hdr->replen += decode_rename_maxsz;
1410 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1415 *p++ = cpu_to_be32(OP_RENEW);
1416 p = xdr_encode_hyper(p, client_stateid->cl_clientid);
1418 hdr->replen += decode_renew_maxsz;
1422 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1427 *p++ = cpu_to_be32(OP_RESTOREFH);
1429 hdr->replen += decode_restorefh_maxsz;
1433 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1437 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1438 *p++ = cpu_to_be32(OP_SETATTR);
1439 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1441 *p++ = cpu_to_be32(1);
1442 *p++ = cpu_to_be32(FATTR4_WORD0_ACL);
1443 if (arg->acl_len % 4)
1446 *p++ = cpu_to_be32(arg->acl_len);
1447 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1449 hdr->replen += decode_setacl_maxsz;
1454 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1459 *p++ = cpu_to_be32(OP_SAVEFH);
1461 hdr->replen += decode_savefh_maxsz;
1464 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1468 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1469 *p++ = cpu_to_be32(OP_SETATTR);
1470 WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
1472 hdr->replen += decode_setattr_maxsz;
1473 encode_attrs(xdr, arg->iap, server);
1476 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1480 RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
1481 *p++ = cpu_to_be32(OP_SETCLIENTID);
1482 WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1484 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1486 *p++ = cpu_to_be32(setclientid->sc_prog);
1487 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1488 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1490 *p++ = cpu_to_be32(setclientid->sc_cb_ident);
1492 hdr->replen += decode_setclientid_maxsz;
1495 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
1499 RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
1500 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1501 p = xdr_encode_hyper(p, client_state->cl_clientid);
1502 WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1504 hdr->replen += decode_setclientid_confirm_maxsz;
1507 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1512 *p++ = cpu_to_be32(OP_WRITE);
1514 encode_stateid(xdr, args->context);
1517 p = xdr_encode_hyper(p, args->offset);
1518 *p++ = cpu_to_be32(args->stable);
1519 *p++ = cpu_to_be32(args->count);
1521 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1523 hdr->replen += decode_write_maxsz;
1526 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1530 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1532 *p++ = cpu_to_be32(OP_DELEGRETURN);
1533 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1535 hdr->replen += decode_delegreturn_maxsz;
1538 #if defined(CONFIG_NFS_V4_1)
1539 /* NFSv4.1 operations */
1540 static void encode_exchange_id(struct xdr_stream *xdr,
1541 struct nfs41_exchange_id_args *args,
1542 struct compound_hdr *hdr)
1546 RESERVE_SPACE(4 + sizeof(args->verifier->data));
1547 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1548 WRITEMEM(args->verifier->data, sizeof(args->verifier->data));
1550 encode_string(xdr, args->id_len, args->id);
1553 *p++ = cpu_to_be32(args->flags);
1554 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1555 *p++ = cpu_to_be32(0); /* zero length implementation id array */
1557 hdr->replen += decode_exchange_id_maxsz;
1560 static void encode_create_session(struct xdr_stream *xdr,
1561 struct nfs41_create_session_args *args,
1562 struct compound_hdr *hdr)
1565 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1567 struct nfs_client *clp = args->client;
1570 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1573 p = xdr_encode_hyper(p, clp->cl_ex_clid);
1576 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1577 *p++ = cpu_to_be32(args->flags); /*flags */
1579 RESERVE_SPACE(2*28); /* 2 channel_attrs */
1581 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1582 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1583 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1584 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1585 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1586 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1587 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1590 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1591 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1592 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1593 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1594 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1595 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1596 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1599 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1601 RESERVE_SPACE(4); /* # of security flavors */
1602 *p++ = cpu_to_be32(1);
1605 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1607 /* authsys_parms rfc1831 */
1609 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1610 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1612 RESERVE_SPACE(16 + len);
1613 *p++ = cpu_to_be32(len);
1614 WRITEMEM(machine_name, len);
1615 *p++ = cpu_to_be32(0); /* UID */
1616 *p++ = cpu_to_be32(0); /* GID */
1617 *p++ = cpu_to_be32(0); /* No more gids */
1619 hdr->replen += decode_create_session_maxsz;
1622 static void encode_destroy_session(struct xdr_stream *xdr,
1623 struct nfs4_session *session,
1624 struct compound_hdr *hdr)
1627 RESERVE_SPACE(4 + NFS4_MAX_SESSIONID_LEN);
1628 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1629 WRITEMEM(session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1631 hdr->replen += decode_destroy_session_maxsz;
1633 #endif /* CONFIG_NFS_V4_1 */
1635 static void encode_sequence(struct xdr_stream *xdr,
1636 const struct nfs4_sequence_args *args,
1637 struct compound_hdr *hdr)
1639 #if defined(CONFIG_NFS_V4_1)
1640 struct nfs4_session *session = args->sa_session;
1641 struct nfs4_slot_table *tp;
1642 struct nfs4_slot *slot;
1648 tp = &session->fc_slot_table;
1650 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1651 slot = tp->slots + args->sa_slotid;
1654 *p++ = cpu_to_be32(OP_SEQUENCE);
1657 * Sessionid + seqid + slotid + max slotid + cache_this
1659 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1660 "max_slotid=%d cache_this=%d\n",
1662 ((u32 *)session->sess_id.data)[0],
1663 ((u32 *)session->sess_id.data)[1],
1664 ((u32 *)session->sess_id.data)[2],
1665 ((u32 *)session->sess_id.data)[3],
1666 slot->seq_nr, args->sa_slotid,
1667 tp->highest_used_slotid, args->sa_cache_this);
1668 RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 16);
1669 WRITEMEM(session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1670 *p++ = cpu_to_be32(slot->seq_nr);
1671 *p++ = cpu_to_be32(args->sa_slotid);
1672 *p++ = cpu_to_be32(tp->highest_used_slotid);
1673 *p++ = cpu_to_be32(args->sa_cache_this);
1675 hdr->replen += decode_sequence_maxsz;
1676 #endif /* CONFIG_NFS_V4_1 */
1680 * END OF "GENERIC" ENCODE ROUTINES.
1683 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1685 #if defined(CONFIG_NFS_V4_1)
1686 if (args->sa_session)
1687 return args->sa_session->clp->cl_minorversion;
1688 #endif /* CONFIG_NFS_V4_1 */
1693 * Encode an ACCESS request
1695 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1697 struct xdr_stream xdr;
1698 struct compound_hdr hdr = {
1699 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1702 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1703 encode_compound_hdr(&xdr, req, &hdr);
1704 encode_sequence(&xdr, &args->seq_args, &hdr);
1705 encode_putfh(&xdr, args->fh, &hdr);
1706 encode_access(&xdr, args->access, &hdr);
1707 encode_getfattr(&xdr, args->bitmask, &hdr);
1713 * Encode LOOKUP request
1715 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1717 struct xdr_stream xdr;
1718 struct compound_hdr hdr = {
1719 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1722 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1723 encode_compound_hdr(&xdr, req, &hdr);
1724 encode_sequence(&xdr, &args->seq_args, &hdr);
1725 encode_putfh(&xdr, args->dir_fh, &hdr);
1726 encode_lookup(&xdr, args->name, &hdr);
1727 encode_getfh(&xdr, &hdr);
1728 encode_getfattr(&xdr, args->bitmask, &hdr);
1734 * Encode LOOKUP_ROOT request
1736 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1738 struct xdr_stream xdr;
1739 struct compound_hdr hdr = {
1740 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1743 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1744 encode_compound_hdr(&xdr, req, &hdr);
1745 encode_sequence(&xdr, &args->seq_args, &hdr);
1746 encode_putrootfh(&xdr, &hdr);
1747 encode_getfh(&xdr, &hdr);
1748 encode_getfattr(&xdr, args->bitmask, &hdr);
1754 * Encode REMOVE request
1756 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1758 struct xdr_stream xdr;
1759 struct compound_hdr hdr = {
1760 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1763 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1764 encode_compound_hdr(&xdr, req, &hdr);
1765 encode_sequence(&xdr, &args->seq_args, &hdr);
1766 encode_putfh(&xdr, args->fh, &hdr);
1767 encode_remove(&xdr, &args->name, &hdr);
1768 encode_getfattr(&xdr, args->bitmask, &hdr);
1774 * Encode RENAME request
1776 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1778 struct xdr_stream xdr;
1779 struct compound_hdr hdr = {
1780 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1783 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1784 encode_compound_hdr(&xdr, req, &hdr);
1785 encode_sequence(&xdr, &args->seq_args, &hdr);
1786 encode_putfh(&xdr, args->old_dir, &hdr);
1787 encode_savefh(&xdr, &hdr);
1788 encode_putfh(&xdr, args->new_dir, &hdr);
1789 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1790 encode_getfattr(&xdr, args->bitmask, &hdr);
1791 encode_restorefh(&xdr, &hdr);
1792 encode_getfattr(&xdr, args->bitmask, &hdr);
1798 * Encode LINK request
1800 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1802 struct xdr_stream xdr;
1803 struct compound_hdr hdr = {
1804 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1807 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1808 encode_compound_hdr(&xdr, req, &hdr);
1809 encode_sequence(&xdr, &args->seq_args, &hdr);
1810 encode_putfh(&xdr, args->fh, &hdr);
1811 encode_savefh(&xdr, &hdr);
1812 encode_putfh(&xdr, args->dir_fh, &hdr);
1813 encode_link(&xdr, args->name, &hdr);
1814 encode_getfattr(&xdr, args->bitmask, &hdr);
1815 encode_restorefh(&xdr, &hdr);
1816 encode_getfattr(&xdr, args->bitmask, &hdr);
1822 * Encode CREATE request
1824 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1826 struct xdr_stream xdr;
1827 struct compound_hdr hdr = {
1828 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1831 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1832 encode_compound_hdr(&xdr, req, &hdr);
1833 encode_sequence(&xdr, &args->seq_args, &hdr);
1834 encode_putfh(&xdr, args->dir_fh, &hdr);
1835 encode_savefh(&xdr, &hdr);
1836 encode_create(&xdr, args, &hdr);
1837 encode_getfh(&xdr, &hdr);
1838 encode_getfattr(&xdr, args->bitmask, &hdr);
1839 encode_restorefh(&xdr, &hdr);
1840 encode_getfattr(&xdr, args->bitmask, &hdr);
1846 * Encode SYMLINK request
1848 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1850 return nfs4_xdr_enc_create(req, p, args);
1854 * Encode GETATTR request
1856 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1858 struct xdr_stream xdr;
1859 struct compound_hdr hdr = {
1860 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1863 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1864 encode_compound_hdr(&xdr, req, &hdr);
1865 encode_sequence(&xdr, &args->seq_args, &hdr);
1866 encode_putfh(&xdr, args->fh, &hdr);
1867 encode_getfattr(&xdr, args->bitmask, &hdr);
1873 * Encode a CLOSE request
1875 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1877 struct xdr_stream xdr;
1878 struct compound_hdr hdr = {
1879 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1882 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1883 encode_compound_hdr(&xdr, req, &hdr);
1884 encode_sequence(&xdr, &args->seq_args, &hdr);
1885 encode_putfh(&xdr, args->fh, &hdr);
1886 encode_close(&xdr, args, &hdr);
1887 encode_getfattr(&xdr, args->bitmask, &hdr);
1893 * Encode an OPEN request
1895 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1897 struct xdr_stream xdr;
1898 struct compound_hdr hdr = {
1899 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1902 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1903 encode_compound_hdr(&xdr, req, &hdr);
1904 encode_sequence(&xdr, &args->seq_args, &hdr);
1905 encode_putfh(&xdr, args->fh, &hdr);
1906 encode_savefh(&xdr, &hdr);
1907 encode_open(&xdr, args, &hdr);
1908 encode_getfh(&xdr, &hdr);
1909 encode_getfattr(&xdr, args->bitmask, &hdr);
1910 encode_restorefh(&xdr, &hdr);
1911 encode_getfattr(&xdr, args->bitmask, &hdr);
1917 * Encode an OPEN_CONFIRM request
1919 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1921 struct xdr_stream xdr;
1922 struct compound_hdr hdr = {
1926 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1927 encode_compound_hdr(&xdr, req, &hdr);
1928 encode_putfh(&xdr, args->fh, &hdr);
1929 encode_open_confirm(&xdr, args, &hdr);
1935 * Encode an OPEN request with no attributes.
1937 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1939 struct xdr_stream xdr;
1940 struct compound_hdr hdr = {
1941 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1944 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1945 encode_compound_hdr(&xdr, req, &hdr);
1946 encode_sequence(&xdr, &args->seq_args, &hdr);
1947 encode_putfh(&xdr, args->fh, &hdr);
1948 encode_open(&xdr, args, &hdr);
1949 encode_getfattr(&xdr, args->bitmask, &hdr);
1955 * Encode an OPEN_DOWNGRADE request
1957 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1959 struct xdr_stream xdr;
1960 struct compound_hdr hdr = {
1961 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1964 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1965 encode_compound_hdr(&xdr, req, &hdr);
1966 encode_sequence(&xdr, &args->seq_args, &hdr);
1967 encode_putfh(&xdr, args->fh, &hdr);
1968 encode_open_downgrade(&xdr, args, &hdr);
1969 encode_getfattr(&xdr, args->bitmask, &hdr);
1975 * Encode a LOCK request
1977 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1979 struct xdr_stream xdr;
1980 struct compound_hdr hdr = {
1981 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1984 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1985 encode_compound_hdr(&xdr, req, &hdr);
1986 encode_sequence(&xdr, &args->seq_args, &hdr);
1987 encode_putfh(&xdr, args->fh, &hdr);
1988 encode_lock(&xdr, args, &hdr);
1994 * Encode a LOCKT request
1996 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1998 struct xdr_stream xdr;
1999 struct compound_hdr hdr = {
2000 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2003 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2004 encode_compound_hdr(&xdr, req, &hdr);
2005 encode_sequence(&xdr, &args->seq_args, &hdr);
2006 encode_putfh(&xdr, args->fh, &hdr);
2007 encode_lockt(&xdr, args, &hdr);
2013 * Encode a LOCKU request
2015 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
2017 struct xdr_stream xdr;
2018 struct compound_hdr hdr = {
2019 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2022 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2023 encode_compound_hdr(&xdr, req, &hdr);
2024 encode_sequence(&xdr, &args->seq_args, &hdr);
2025 encode_putfh(&xdr, args->fh, &hdr);
2026 encode_locku(&xdr, args, &hdr);
2032 * Encode a READLINK request
2034 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
2036 struct xdr_stream xdr;
2037 struct compound_hdr hdr = {
2038 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2041 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2042 encode_compound_hdr(&xdr, req, &hdr);
2043 encode_sequence(&xdr, &args->seq_args, &hdr);
2044 encode_putfh(&xdr, args->fh, &hdr);
2045 encode_readlink(&xdr, args, req, &hdr);
2047 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2048 args->pgbase, args->pglen);
2054 * Encode a READDIR request
2056 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
2058 struct xdr_stream xdr;
2059 struct compound_hdr hdr = {
2060 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2063 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2064 encode_compound_hdr(&xdr, req, &hdr);
2065 encode_sequence(&xdr, &args->seq_args, &hdr);
2066 encode_putfh(&xdr, args->fh, &hdr);
2067 encode_readdir(&xdr, args, req, &hdr);
2069 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2070 args->pgbase, args->count);
2071 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2072 __func__, hdr.replen << 2, args->pages,
2073 args->pgbase, args->count);
2079 * Encode a READ request
2081 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
2083 struct xdr_stream xdr;
2084 struct compound_hdr hdr = {
2085 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2088 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2089 encode_compound_hdr(&xdr, req, &hdr);
2090 encode_sequence(&xdr, &args->seq_args, &hdr);
2091 encode_putfh(&xdr, args->fh, &hdr);
2092 encode_read(&xdr, args, &hdr);
2094 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2095 args->pages, args->pgbase, args->count);
2096 req->rq_rcv_buf.flags |= XDRBUF_READ;
2102 * Encode an SETATTR request
2104 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
2106 struct xdr_stream xdr;
2107 struct compound_hdr hdr = {
2108 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2111 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2112 encode_compound_hdr(&xdr, req, &hdr);
2113 encode_sequence(&xdr, &args->seq_args, &hdr);
2114 encode_putfh(&xdr, args->fh, &hdr);
2115 encode_setattr(&xdr, args, args->server, &hdr);
2116 encode_getfattr(&xdr, args->bitmask, &hdr);
2122 * Encode a GETACL request
2125 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
2126 struct nfs_getaclargs *args)
2128 struct xdr_stream xdr;
2129 struct compound_hdr hdr = {
2130 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2134 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2135 encode_compound_hdr(&xdr, req, &hdr);
2136 encode_sequence(&xdr, &args->seq_args, &hdr);
2137 encode_putfh(&xdr, args->fh, &hdr);
2138 replen = hdr.replen + nfs4_fattr_bitmap_maxsz + 1;
2139 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2141 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2142 args->acl_pages, args->acl_pgbase, args->acl_len);
2148 * Encode a WRITE request
2150 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2152 struct xdr_stream xdr;
2153 struct compound_hdr hdr = {
2154 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2157 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2158 encode_compound_hdr(&xdr, req, &hdr);
2159 encode_sequence(&xdr, &args->seq_args, &hdr);
2160 encode_putfh(&xdr, args->fh, &hdr);
2161 encode_write(&xdr, args, &hdr);
2162 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2163 encode_getfattr(&xdr, args->bitmask, &hdr);
2171 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2173 struct xdr_stream xdr;
2174 struct compound_hdr hdr = {
2175 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2178 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2179 encode_compound_hdr(&xdr, req, &hdr);
2180 encode_sequence(&xdr, &args->seq_args, &hdr);
2181 encode_putfh(&xdr, args->fh, &hdr);
2182 encode_commit(&xdr, args, &hdr);
2183 encode_getfattr(&xdr, args->bitmask, &hdr);
2191 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2193 struct xdr_stream xdr;
2194 struct compound_hdr hdr = {
2195 .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 encode_fsinfo(&xdr, args->bitmask, &hdr);
2208 * a PATHCONF request
2210 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2212 struct xdr_stream xdr;
2213 struct compound_hdr hdr = {
2214 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2217 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2218 encode_compound_hdr(&xdr, req, &hdr);
2219 encode_sequence(&xdr, &args->seq_args, &hdr);
2220 encode_putfh(&xdr, args->fh, &hdr);
2221 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2230 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2232 struct xdr_stream xdr;
2233 struct compound_hdr hdr = {
2234 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2237 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2238 encode_compound_hdr(&xdr, req, &hdr);
2239 encode_sequence(&xdr, &args->seq_args, &hdr);
2240 encode_putfh(&xdr, args->fh, &hdr);
2241 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2242 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2248 * GETATTR_BITMAP request
2250 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2251 struct nfs4_server_caps_arg *args)
2253 struct xdr_stream xdr;
2254 struct compound_hdr hdr = {
2255 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2258 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2259 encode_compound_hdr(&xdr, req, &hdr);
2260 encode_sequence(&xdr, &args->seq_args, &hdr);
2261 encode_putfh(&xdr, args->fhandle, &hdr);
2262 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2263 FATTR4_WORD0_LINK_SUPPORT|
2264 FATTR4_WORD0_SYMLINK_SUPPORT|
2265 FATTR4_WORD0_ACLSUPPORT, &hdr);
2273 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2275 struct xdr_stream xdr;
2276 struct compound_hdr hdr = {
2280 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2281 encode_compound_hdr(&xdr, req, &hdr);
2282 encode_renew(&xdr, clp, &hdr);
2288 * a SETCLIENTID request
2290 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2292 struct xdr_stream xdr;
2293 struct compound_hdr hdr = {
2297 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2298 encode_compound_hdr(&xdr, req, &hdr);
2299 encode_setclientid(&xdr, sc, &hdr);
2305 * a SETCLIENTID_CONFIRM request
2307 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2309 struct xdr_stream xdr;
2310 struct compound_hdr hdr = {
2313 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2315 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2316 encode_compound_hdr(&xdr, req, &hdr);
2317 encode_setclientid_confirm(&xdr, clp, &hdr);
2318 encode_putrootfh(&xdr, &hdr);
2319 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2325 * DELEGRETURN request
2327 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2329 struct xdr_stream xdr;
2330 struct compound_hdr hdr = {
2331 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2334 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2335 encode_compound_hdr(&xdr, req, &hdr);
2336 encode_sequence(&xdr, &args->seq_args, &hdr);
2337 encode_putfh(&xdr, args->fhandle, &hdr);
2338 encode_delegreturn(&xdr, args->stateid, &hdr);
2339 encode_getfattr(&xdr, args->bitmask, &hdr);
2345 * Encode FS_LOCATIONS request
2347 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2349 struct xdr_stream xdr;
2350 struct compound_hdr hdr = {
2351 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2355 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2356 encode_compound_hdr(&xdr, req, &hdr);
2357 encode_sequence(&xdr, &args->seq_args, &hdr);
2358 encode_putfh(&xdr, args->dir_fh, &hdr);
2359 encode_lookup(&xdr, args->name, &hdr);
2360 replen = hdr.replen; /* get the attribute into args->page */
2361 encode_fs_locations(&xdr, args->bitmask, &hdr);
2363 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2369 #if defined(CONFIG_NFS_V4_1)
2371 * EXCHANGE_ID request
2373 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2374 struct nfs41_exchange_id_args *args)
2376 struct xdr_stream xdr;
2377 struct compound_hdr hdr = {
2378 .minorversion = args->client->cl_minorversion,
2381 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2382 encode_compound_hdr(&xdr, req, &hdr);
2383 encode_exchange_id(&xdr, args, &hdr);
2389 * a CREATE_SESSION request
2391 static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
2392 struct nfs41_create_session_args *args)
2394 struct xdr_stream xdr;
2395 struct compound_hdr hdr = {
2396 .minorversion = args->client->cl_minorversion,
2399 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2400 encode_compound_hdr(&xdr, req, &hdr);
2401 encode_create_session(&xdr, args, &hdr);
2407 * a DESTROY_SESSION request
2409 static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
2410 struct nfs4_session *session)
2412 struct xdr_stream xdr;
2413 struct compound_hdr hdr = {
2414 .minorversion = session->clp->cl_minorversion,
2417 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2418 encode_compound_hdr(&xdr, req, &hdr);
2419 encode_destroy_session(&xdr, session, &hdr);
2425 * a SEQUENCE request
2427 static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
2428 struct nfs4_sequence_args *args)
2430 struct xdr_stream xdr;
2431 struct compound_hdr hdr = {
2432 .minorversion = nfs4_xdr_minorversion(args),
2435 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2436 encode_compound_hdr(&xdr, req, &hdr);
2437 encode_sequence(&xdr, args, &hdr);
2443 * a GET_LEASE_TIME request
2445 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2446 struct nfs4_get_lease_time_args *args)
2448 struct xdr_stream xdr;
2449 struct compound_hdr hdr = {
2450 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2452 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2454 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2455 encode_compound_hdr(&xdr, req, &hdr);
2456 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2457 encode_putrootfh(&xdr, &hdr);
2458 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2462 #endif /* CONFIG_NFS_V4_1 */
2465 * START OF "GENERIC" DECODE ROUTINES.
2466 * These may look a little ugly since they are imported from a "generic"
2467 * set of XDR encode/decode routines which are intended to be shared by
2468 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2470 * If the pain of reading these is too great, it should be a straightforward
2471 * task to translate them into Linux-specific versions which are more
2472 * consistent with the style used in NFSv2/v3...
2474 #define READ32(x) (x) = ntohl(*p++)
2475 #define READ64(x) do { \
2476 (x) = (u64)ntohl(*p++) << 32; \
2477 (x) |= ntohl(*p++); \
2479 #define READTIME(x) do { \
2481 (x.tv_sec) = ntohl(*p++); \
2482 (x.tv_nsec) = ntohl(*p++); \
2484 #define COPYMEM(x,nbytes) do { \
2485 memcpy((x), p, nbytes); \
2486 p += XDR_QUADLEN(nbytes); \
2489 #define READ_BUF(nbytes) do { \
2490 p = xdr_inline_decode(xdr, nbytes); \
2491 if (unlikely(!p)) { \
2492 dprintk("nfs: %s: prematurely hit end of receive" \
2493 " buffer\n", __func__); \
2494 dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2495 __func__, xdr->p, nbytes, xdr->end); \
2500 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2507 *string = (char *)p;
2511 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2516 READ32(hdr->status);
2517 READ32(hdr->taglen);
2519 READ_BUF(hdr->taglen + 4);
2520 hdr->tag = (char *)p;
2521 p += XDR_QUADLEN(hdr->taglen);
2523 if (unlikely(hdr->nops < 1))
2524 return nfs4_stat_to_errno(hdr->status);
2528 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2536 if (opnum != expected) {
2537 dprintk("nfs: Server returned operation"
2538 " %d but we issued a request for %d\n",
2543 if (nfserr != NFS_OK)
2544 return nfs4_stat_to_errno(nfserr);
2549 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2552 unsigned int strlen;
2556 return decode_opaque_inline(xdr, &strlen, &str);
2559 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2567 bitmap[0] = bitmap[1] = 0;
2568 READ_BUF((bmlen << 2));
2577 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2587 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2589 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2590 decode_attr_bitmap(xdr, bitmask);
2591 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2593 bitmask[0] = bitmask[1] = 0;
2594 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2598 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2604 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2606 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2609 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2610 dprintk("%s: bad type %d\n", __func__, *type);
2613 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2614 ret = NFS_ATTR_FATTR_TYPE;
2616 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2620 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2626 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2628 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2631 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2632 ret = NFS_ATTR_FATTR_CHANGE;
2634 dprintk("%s: change attribute=%Lu\n", __func__,
2635 (unsigned long long)*change);
2639 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2645 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2647 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2650 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2651 ret = NFS_ATTR_FATTR_SIZE;
2653 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2657 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2662 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2664 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2667 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2669 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2673 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2678 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2680 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2683 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2685 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2689 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2696 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2698 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2700 READ64(fsid->major);
2701 READ64(fsid->minor);
2702 bitmap[0] &= ~FATTR4_WORD0_FSID;
2703 ret = NFS_ATTR_FATTR_FSID;
2705 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2706 (unsigned long long)fsid->major,
2707 (unsigned long long)fsid->minor);
2711 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2716 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2718 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2721 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2723 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2727 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2731 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2732 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2734 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2737 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2739 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2743 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2749 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2751 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2754 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2755 ret = NFS_ATTR_FATTR_FILEID;
2757 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2761 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2767 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2769 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2772 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2773 ret = NFS_ATTR_FATTR_FILEID;
2775 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2779 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2785 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2787 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2790 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2792 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2796 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2802 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2804 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2807 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2809 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2813 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2819 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2821 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2824 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2826 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2830 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2841 path->ncomponents = 0;
2842 while (path->ncomponents < n) {
2843 struct nfs4_string *component = &path->components[path->ncomponents];
2844 status = decode_opaque_inline(xdr, &component->len, &component->data);
2845 if (unlikely(status != 0))
2847 if (path->ncomponents != n)
2849 dprintk("%s", component->data);
2850 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2851 path->ncomponents++;
2853 dprintk("cannot parse %d components in path\n", n);
2861 /* a root pathname is sent as a zero component4 */
2862 path->ncomponents = 1;
2863 path->components[0].len=0;
2864 path->components[0].data=NULL;
2865 dprintk("path /\n");
2868 dprintk(" status %d", status);
2873 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2879 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2882 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2884 dprintk("%s: fsroot ", __func__);
2885 status = decode_pathname(xdr, &res->fs_path);
2886 if (unlikely(status != 0))
2892 res->nlocations = 0;
2893 while (res->nlocations < n) {
2895 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2901 dprintk("%s: servers ", __func__);
2902 while (loc->nservers < m) {
2903 struct nfs4_string *server = &loc->servers[loc->nservers];
2904 status = decode_opaque_inline(xdr, &server->len, &server->data);
2905 if (unlikely(status != 0))
2907 dprintk("%s ", server->data);
2908 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2912 dprintk("%s: using first %u of %u servers "
2913 "returned for location %u\n",
2915 NFS4_FS_LOCATION_MAXSERVERS,
2916 m, res->nlocations);
2917 for (i = loc->nservers; i < m; i++) {
2920 status = decode_opaque_inline(xdr, &len, &data);
2921 if (unlikely(status != 0))
2926 status = decode_pathname(xdr, &loc->rootpath);
2927 if (unlikely(status != 0))
2929 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2932 if (res->nlocations != 0)
2933 status = NFS_ATTR_FATTR_V4_REFERRAL;
2935 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
2942 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2948 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2950 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2953 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2955 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
2959 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2965 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2967 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2970 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2972 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
2976 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2982 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2984 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2987 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2989 dprintk("%s: maxname=%u\n", __func__, *maxname);
2993 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2999 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3001 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3005 if (maxread > 0x7FFFFFFF)
3006 maxread = 0x7FFFFFFF;
3007 *res = (uint32_t)maxread;
3008 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3010 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3014 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3020 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3022 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3026 if (maxwrite > 0x7FFFFFFF)
3027 maxwrite = 0x7FFFFFFF;
3028 *res = (uint32_t)maxwrite;
3029 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3031 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3035 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3042 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3044 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3047 *mode = tmp & ~S_IFMT;
3048 bitmap[1] &= ~FATTR4_WORD1_MODE;
3049 ret = NFS_ATTR_FATTR_MODE;
3051 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3055 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3061 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3063 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3066 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3067 ret = NFS_ATTR_FATTR_NLINK;
3069 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3073 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
3080 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3082 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3086 if (len < XDR_MAX_NETOBJ) {
3087 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3088 ret = NFS_ATTR_FATTR_OWNER;
3090 dprintk("%s: nfs_map_name_to_uid failed!\n",
3093 dprintk("%s: name too long (%u)!\n",
3095 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3097 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3101 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
3108 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3110 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3114 if (len < XDR_MAX_NETOBJ) {
3115 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3116 ret = NFS_ATTR_FATTR_GROUP;
3118 dprintk("%s: nfs_map_group_to_gid failed!\n",
3121 dprintk("%s: name too long (%u)!\n",
3123 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3125 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3129 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3131 uint32_t major = 0, minor = 0;
3136 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3138 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3144 tmp = MKDEV(major, minor);
3145 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3147 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3148 ret = NFS_ATTR_FATTR_RDEV;
3150 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3154 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3160 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3162 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3165 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3167 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3171 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3177 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3179 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3182 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3184 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3188 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3194 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3196 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3199 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3201 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3205 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3211 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3213 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3216 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3217 ret = NFS_ATTR_FATTR_SPACE_USED;
3219 dprintk("%s: space used=%Lu\n", __func__,
3220 (unsigned long long)*used);
3224 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3233 time->tv_sec = (time_t)sec;
3234 time->tv_nsec = (long)nsec;
3238 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3244 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3246 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3247 status = decode_attr_time(xdr, time);
3249 status = NFS_ATTR_FATTR_ATIME;
3250 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3252 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3256 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3262 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3264 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3265 status = decode_attr_time(xdr, time);
3267 status = NFS_ATTR_FATTR_CTIME;
3268 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3270 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3274 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3280 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3282 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3283 status = decode_attr_time(xdr, time);
3285 status = NFS_ATTR_FATTR_MTIME;
3286 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3288 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3292 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3294 unsigned int attrwords = XDR_QUADLEN(attrlen);
3295 unsigned int nwords = xdr->p - savep;
3297 if (unlikely(attrwords != nwords)) {
3298 dprintk("%s: server returned incorrect attribute length: "
3302 (attrwords < nwords) ? '<' : '>',
3309 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3314 READ32(cinfo->atomic);
3315 READ64(cinfo->before);
3316 READ64(cinfo->after);
3320 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3326 status = decode_op_hdr(xdr, OP_ACCESS);
3332 access->supported = supp;
3333 access->access = acc;
3337 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3342 status = decode_op_hdr(xdr, OP_CLOSE);
3344 nfs_increment_open_seqid(status, res->seqid);
3347 READ_BUF(NFS4_STATEID_SIZE);
3348 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3352 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3357 status = decode_op_hdr(xdr, OP_COMMIT);
3361 COPYMEM(res->verf->verifier, 8);
3365 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3371 status = decode_op_hdr(xdr, OP_CREATE);
3374 if ((status = decode_change_info(xdr, cinfo)))
3378 READ_BUF(bmlen << 2);
3382 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3385 uint32_t attrlen, bitmap[2] = {0};
3388 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3390 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3392 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3394 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3396 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3398 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3400 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3402 status = verify_attr_len(xdr, savep, attrlen);
3404 dprintk("%s: xdr returned %d!\n", __func__, -status);
3408 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3411 uint32_t attrlen, bitmap[2] = {0};
3414 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3416 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3418 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3421 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3423 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3425 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3427 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3429 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3431 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3434 status = verify_attr_len(xdr, savep, attrlen);
3436 dprintk("%s: xdr returned %d!\n", __func__, -status);
3440 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3443 uint32_t attrlen, bitmap[2] = {0};
3446 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3448 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3450 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3453 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3455 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3458 status = verify_attr_len(xdr, savep, attrlen);
3460 dprintk("%s: xdr returned %d!\n", __func__, -status);
3464 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3474 status = decode_op_hdr(xdr, OP_GETATTR);
3478 status = decode_attr_bitmap(xdr, bitmap);
3482 status = decode_attr_length(xdr, &attrlen, &savep);
3487 status = decode_attr_type(xdr, bitmap, &type);
3492 fattr->mode |= nfs_type2fmt[type];
3493 fattr->valid |= status;
3496 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3499 fattr->valid |= status;
3501 status = decode_attr_size(xdr, bitmap, &fattr->size);
3504 fattr->valid |= status;
3506 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3509 fattr->valid |= status;
3511 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3514 fattr->valid |= status;
3516 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3517 struct nfs4_fs_locations,
3521 fattr->valid |= status;
3523 status = decode_attr_mode(xdr, bitmap, &fmode);
3527 fattr->mode |= fmode;
3528 fattr->valid |= status;
3531 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3534 fattr->valid |= status;
3536 status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid);
3539 fattr->valid |= status;
3541 status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid);
3544 fattr->valid |= status;
3546 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3549 fattr->valid |= status;
3551 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3554 fattr->valid |= status;
3556 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3559 fattr->valid |= status;
3561 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3564 fattr->valid |= status;
3566 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3569 fattr->valid |= status;
3571 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3574 if (status != 0 && !(fattr->valid & status)) {
3575 fattr->fileid = fileid;
3576 fattr->valid |= status;
3579 status = verify_attr_len(xdr, savep, attrlen);
3581 dprintk("%s: xdr returned %d\n", __func__, -status);
3586 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3589 uint32_t attrlen, bitmap[2];
3592 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3594 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3596 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3599 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3601 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3603 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3605 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3607 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3608 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3610 fsinfo->wtpref = fsinfo->wtmax;
3612 status = verify_attr_len(xdr, savep, attrlen);
3614 dprintk("%s: xdr returned %d!\n", __func__, -status);
3618 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3624 /* Zero handle first to allow comparisons */
3625 memset(fh, 0, sizeof(*fh));
3627 status = decode_op_hdr(xdr, OP_GETFH);
3633 if (len > NFS4_FHSIZE)
3637 COPYMEM(fh->data, len);
3641 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3645 status = decode_op_hdr(xdr, OP_LINK);
3648 return decode_change_info(xdr, cinfo);
3652 * We create the owner, so we know a proper owner.id length is 4.
3654 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3656 uint64_t offset, length, clientid;
3658 uint32_t namelen, type;
3665 fl->fl_start = (loff_t)offset;
3666 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3667 if (length == ~(uint64_t)0)
3668 fl->fl_end = OFFSET_MAX;
3669 fl->fl_type = F_WRLCK;
3671 fl->fl_type = F_RDLCK;
3677 return -NFS4ERR_DENIED;
3680 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3685 status = decode_op_hdr(xdr, OP_LOCK);
3689 READ_BUF(NFS4_STATEID_SIZE);
3690 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3691 } else if (status == -NFS4ERR_DENIED)
3692 status = decode_lock_denied(xdr, NULL);
3693 if (res->open_seqid != NULL)
3694 nfs_increment_open_seqid(status, res->open_seqid);
3695 nfs_increment_lock_seqid(status, res->lock_seqid);
3700 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3703 status = decode_op_hdr(xdr, OP_LOCKT);
3704 if (status == -NFS4ERR_DENIED)
3705 return decode_lock_denied(xdr, res->denied);
3709 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3714 status = decode_op_hdr(xdr, OP_LOCKU);
3716 nfs_increment_lock_seqid(status, res->seqid);
3718 READ_BUF(NFS4_STATEID_SIZE);
3719 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3724 static int decode_lookup(struct xdr_stream *xdr)
3726 return decode_op_hdr(xdr, OP_LOOKUP);
3729 /* This is too sick! */
3730 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3733 uint32_t limit_type, nblocks, blocksize;
3737 switch (limit_type) {
3744 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3749 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3752 uint32_t delegation_type;
3755 READ32(delegation_type);
3756 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3757 res->delegation_type = 0;
3760 READ_BUF(NFS4_STATEID_SIZE+4);
3761 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
3762 READ32(res->do_recall);
3764 switch (delegation_type) {
3765 case NFS4_OPEN_DELEGATE_READ:
3766 res->delegation_type = FMODE_READ;
3768 case NFS4_OPEN_DELEGATE_WRITE:
3769 res->delegation_type = FMODE_WRITE|FMODE_READ;
3770 if (decode_space_limit(xdr, &res->maxsize) < 0)
3773 return decode_ace(xdr, NULL, res->server->nfs_client);
3776 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3779 uint32_t savewords, bmlen, i;
3782 status = decode_op_hdr(xdr, OP_OPEN);
3784 nfs_increment_open_seqid(status, res->seqid);
3787 READ_BUF(NFS4_STATEID_SIZE);
3788 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3790 decode_change_info(xdr, &res->cinfo);
3793 READ32(res->rflags);
3798 READ_BUF(bmlen << 2);
3799 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3800 for (i = 0; i < savewords; ++i)
3801 READ32(res->attrset[i]);
3802 for (; i < NFS4_BITMAP_SIZE; i++)
3803 res->attrset[i] = 0;
3805 return decode_delegation(xdr, res);
3807 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
3811 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3816 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3818 nfs_increment_open_seqid(status, res->seqid);
3821 READ_BUF(NFS4_STATEID_SIZE);
3822 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3826 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3831 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3833 nfs_increment_open_seqid(status, res->seqid);
3836 READ_BUF(NFS4_STATEID_SIZE);
3837 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3841 static int decode_putfh(struct xdr_stream *xdr)
3843 return decode_op_hdr(xdr, OP_PUTFH);
3846 static int decode_putrootfh(struct xdr_stream *xdr)
3848 return decode_op_hdr(xdr, OP_PUTROOTFH);
3851 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3853 struct kvec *iov = req->rq_rcv_buf.head;
3855 uint32_t count, eof, recvd, hdrlen;
3858 status = decode_op_hdr(xdr, OP_READ);
3864 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3865 recvd = req->rq_rcv_buf.len - hdrlen;
3866 if (count > recvd) {
3867 dprintk("NFS: server cheating in read reply: "
3868 "count %u > recvd %u\n", count, recvd);
3872 xdr_read_pages(xdr, count);
3878 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3880 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3881 struct page *page = *rcvbuf->pages;
3882 struct kvec *iov = rcvbuf->head;
3884 u32 recvd, pglen = rcvbuf->page_len;
3885 __be32 *end, *entry, *p, *kaddr;
3886 unsigned int nr = 0;
3889 status = decode_op_hdr(xdr, OP_READDIR);
3893 COPYMEM(readdir->verifier.data, 8);
3894 dprintk("%s: verifier = %08x:%08x\n",
3896 ((u32 *)readdir->verifier.data)[0],
3897 ((u32 *)readdir->verifier.data)[1]);
3900 hdrlen = (char *) p - (char *) iov->iov_base;
3901 recvd = rcvbuf->len - hdrlen;
3904 xdr_read_pages(xdr, pglen);
3906 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3907 kaddr = p = kmap_atomic(page, KM_USER0);
3908 end = p + ((pglen + readdir->pgbase) >> 2);
3911 /* Make sure the packet actually has a value_follows and EOF entry */
3912 if ((entry + 1) > end)
3915 for (; *p++; nr++) {
3916 u32 len, attrlen, xlen;
3919 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3920 p += 2; /* cookie */
3921 len = ntohl(*p++); /* filename length */
3922 if (len > NFS4_MAXNAMLEN) {
3923 dprintk("NFS: giant filename in readdir (len 0x%x)\n",
3927 xlen = XDR_QUADLEN(len);
3928 if (end - p < xlen + 1)
3930 dprintk("filename = %*s\n", len, (char *)p);
3932 len = ntohl(*p++); /* bitmap length */
3933 if (end - p < len + 1)
3936 attrlen = XDR_QUADLEN(ntohl(*p++));
3937 if (end - p < attrlen + 2)
3939 p += attrlen; /* attributes */
3943 * Apparently some server sends responses that are a valid size, but
3944 * contain no entries, and have value_follows==0 and EOF==0. For
3945 * those, just set the EOF marker.
3947 if (!nr && entry[1] == 0) {
3948 dprintk("NFS: readdir reply truncated!\n");
3952 kunmap_atomic(kaddr, KM_USER0);
3956 * When we get a short packet there are 2 possibilities. We can
3957 * return an error, or fix up the response to look like a valid
3958 * response and return what we have so far. If there are no
3959 * entries and the packet was short, then return -EIO. If there
3960 * are valid entries in the response, return them and pretend that
3961 * the call was successful, but incomplete. The caller can retry the
3962 * readdir starting at the last cookie.
3964 dprintk("%s: short packet at entry %d\n", __func__, nr);
3965 entry[0] = entry[1] = 0;
3969 kunmap_atomic(kaddr, KM_USER0);
3970 return -errno_NFSERR_IO;
3973 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3975 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3976 struct kvec *iov = rcvbuf->head;
3983 status = decode_op_hdr(xdr, OP_READLINK);
3987 /* Convert length of symlink */
3990 if (len >= rcvbuf->page_len || len <= 0) {
3991 dprintk("nfs: server returned giant symlink!\n");
3992 return -ENAMETOOLONG;
3994 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3995 recvd = req->rq_rcv_buf.len - hdrlen;
3997 dprintk("NFS: server cheating in readlink reply: "
3998 "count %u > recvd %u\n", len, recvd);
4001 xdr_read_pages(xdr, len);
4003 * The XDR encode routine has set things up so that
4004 * the link text will be copied directly into the
4005 * buffer. We just have to do overflow-checking,
4006 * and and null-terminate the text (the VFS expects
4007 * null-termination).
4009 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
4010 kaddr[len+rcvbuf->page_base] = '\0';
4011 kunmap_atomic(kaddr, KM_USER0);
4015 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4019 status = decode_op_hdr(xdr, OP_REMOVE);
4022 status = decode_change_info(xdr, cinfo);
4027 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4028 struct nfs4_change_info *new_cinfo)
4032 status = decode_op_hdr(xdr, OP_RENAME);
4035 if ((status = decode_change_info(xdr, old_cinfo)))
4037 status = decode_change_info(xdr, new_cinfo);
4042 static int decode_renew(struct xdr_stream *xdr)
4044 return decode_op_hdr(xdr, OP_RENEW);
4048 decode_restorefh(struct xdr_stream *xdr)
4050 return decode_op_hdr(xdr, OP_RESTOREFH);
4053 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4059 struct kvec *iov = req->rq_rcv_buf.head;
4063 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4065 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4067 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4070 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4072 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4076 /* We ignore &savep and don't do consistency checks on
4077 * the attr length. Let userspace figure it out.... */
4078 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4079 recvd = req->rq_rcv_buf.len - hdrlen;
4080 if (attrlen > recvd) {
4081 dprintk("NFS: server cheating in getattr"
4082 " acl reply: attrlen %u > recvd %u\n",
4086 xdr_read_pages(xdr, attrlen);
4089 status = -EOPNOTSUPP;
4096 decode_savefh(struct xdr_stream *xdr)
4098 return decode_op_hdr(xdr, OP_SAVEFH);
4101 static int decode_setattr(struct xdr_stream *xdr)
4107 status = decode_op_hdr(xdr, OP_SETATTR);
4112 READ_BUF(bmlen << 2);
4116 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
4124 if (opnum != OP_SETCLIENTID) {
4125 dprintk("nfs: decode_setclientid: Server returned operation"
4130 if (nfserr == NFS_OK) {
4131 READ_BUF(8 + NFS4_VERIFIER_SIZE);
4132 READ64(clp->cl_clientid);
4133 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
4134 } else if (nfserr == NFSERR_CLID_INUSE) {
4137 /* skip netid string */
4142 /* skip uaddr string */
4146 return -NFSERR_CLID_INUSE;
4148 return nfs4_stat_to_errno(nfserr);
4153 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4155 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4158 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4163 status = decode_op_hdr(xdr, OP_WRITE);
4169 READ32(res->verf->committed);
4170 COPYMEM(res->verf->verifier, 8);
4174 static int decode_delegreturn(struct xdr_stream *xdr)
4176 return decode_op_hdr(xdr, OP_DELEGRETURN);
4179 #if defined(CONFIG_NFS_V4_1)
4180 static int decode_exchange_id(struct xdr_stream *xdr,
4181 struct nfs41_exchange_id_res *res)
4186 struct nfs_client *clp = res->client;
4188 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4193 READ64(clp->cl_ex_clid);
4195 READ32(clp->cl_seqid);
4196 READ32(clp->cl_exchange_flags);
4198 /* We ask for SP4_NONE */
4200 if (dummy != SP4_NONE)
4203 /* Throw away minor_id */
4206 /* Throw away Major id */
4211 /* Throw away server_scope */
4216 /* Throw away Implementation id array */
4224 static int decode_chan_attrs(struct xdr_stream *xdr,
4225 struct nfs4_channel_attrs *attrs)
4231 READ32(attrs->headerpadsz);
4232 READ32(attrs->max_rqst_sz);
4233 READ32(attrs->max_resp_sz);
4234 READ32(attrs->max_resp_sz_cached);
4235 READ32(attrs->max_ops);
4236 READ32(attrs->max_reqs);
4238 if (unlikely(nr_attrs > 1)) {
4239 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4240 __func__, nr_attrs);
4244 READ_BUF(4); /* skip rdma_attrs */
4248 static int decode_create_session(struct xdr_stream *xdr,
4249 struct nfs41_create_session_res *res)
4253 struct nfs_client *clp = res->client;
4254 struct nfs4_session *session = clp->cl_session;
4256 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
4262 READ_BUF(NFS4_MAX_SESSIONID_LEN);
4263 COPYMEM(&session->sess_id, NFS4_MAX_SESSIONID_LEN);
4267 READ32(clp->cl_seqid);
4268 READ32(session->flags);
4270 /* Channel attributes */
4271 status = decode_chan_attrs(xdr, &session->fc_attrs);
4273 status = decode_chan_attrs(xdr, &session->bc_attrs);
4277 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4279 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4281 #endif /* CONFIG_NFS_V4_1 */
4283 static int decode_sequence(struct xdr_stream *xdr,
4284 struct nfs4_sequence_res *res,
4285 struct rpc_rqst *rqstp)
4287 #if defined(CONFIG_NFS_V4_1)
4288 struct nfs4_slot *slot;
4289 struct nfs4_sessionid id;
4294 if (!res->sr_session)
4297 status = decode_op_hdr(xdr, OP_SEQUENCE);
4302 * If the server returns different values for sessionID, slotID or
4303 * sequence number, the server is looney tunes.
4305 status = -ESERVERFAULT;
4307 slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid];
4308 READ_BUF(NFS4_MAX_SESSIONID_LEN + 20);
4309 COPYMEM(id.data, NFS4_MAX_SESSIONID_LEN);
4310 if (memcmp(id.data, res->sr_session->sess_id.data,
4311 NFS4_MAX_SESSIONID_LEN)) {
4312 dprintk("%s Invalid session id\n", __func__);
4317 if (dummy != slot->seq_nr) {
4318 dprintk("%s Invalid sequence number\n", __func__);
4323 if (dummy != res->sr_slotid) {
4324 dprintk("%s Invalid slot id\n", __func__);
4327 /* highest slot id - currently not processed */
4329 /* target highest slot id - currently not processed */
4331 /* result flags - currently not processed */
4335 res->sr_status = status;
4337 #else /* CONFIG_NFS_V4_1 */
4339 #endif /* CONFIG_NFS_V4_1 */
4343 * END OF "GENERIC" DECODE ROUTINES.
4347 * Decode OPEN_DOWNGRADE response
4349 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4351 struct xdr_stream xdr;
4352 struct compound_hdr hdr;
4355 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4356 status = decode_compound_hdr(&xdr, &hdr);
4359 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4362 status = decode_putfh(&xdr);
4365 status = decode_open_downgrade(&xdr, res);
4368 decode_getfattr(&xdr, res->fattr, res->server);
4374 * Decode ACCESS response
4376 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
4378 struct xdr_stream xdr;
4379 struct compound_hdr hdr;
4382 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4383 status = decode_compound_hdr(&xdr, &hdr);
4386 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4389 status = decode_putfh(&xdr);
4392 status = decode_access(&xdr, res);
4395 decode_getfattr(&xdr, res->fattr, res->server);
4401 * Decode LOOKUP response
4403 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4405 struct xdr_stream xdr;
4406 struct compound_hdr hdr;
4409 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4410 status = decode_compound_hdr(&xdr, &hdr);
4413 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4416 if ((status = decode_putfh(&xdr)) != 0)
4418 if ((status = decode_lookup(&xdr)) != 0)
4420 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4422 status = decode_getfattr(&xdr, res->fattr, res->server);
4428 * Decode LOOKUP_ROOT response
4430 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4432 struct xdr_stream xdr;
4433 struct compound_hdr hdr;
4436 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4437 status = decode_compound_hdr(&xdr, &hdr);
4440 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4443 if ((status = decode_putrootfh(&xdr)) != 0)
4445 if ((status = decode_getfh(&xdr, res->fh)) == 0)
4446 status = decode_getfattr(&xdr, res->fattr, res->server);
4452 * Decode REMOVE response
4454 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
4456 struct xdr_stream xdr;
4457 struct compound_hdr hdr;
4460 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4461 status = decode_compound_hdr(&xdr, &hdr);
4464 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4467 if ((status = decode_putfh(&xdr)) != 0)
4469 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
4471 decode_getfattr(&xdr, &res->dir_attr, res->server);
4477 * Decode RENAME response
4479 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
4481 struct xdr_stream xdr;
4482 struct compound_hdr hdr;
4485 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4486 status = decode_compound_hdr(&xdr, &hdr);
4489 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4492 if ((status = decode_putfh(&xdr)) != 0)
4494 if ((status = decode_savefh(&xdr)) != 0)
4496 if ((status = decode_putfh(&xdr)) != 0)
4498 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4500 /* Current FH is target directory */
4501 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
4503 if ((status = decode_restorefh(&xdr)) != 0)
4505 decode_getfattr(&xdr, res->old_fattr, res->server);
4511 * Decode LINK response
4513 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4515 struct xdr_stream xdr;
4516 struct compound_hdr hdr;
4519 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4520 status = decode_compound_hdr(&xdr, &hdr);
4523 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4526 if ((status = decode_putfh(&xdr)) != 0)
4528 if ((status = decode_savefh(&xdr)) != 0)
4530 if ((status = decode_putfh(&xdr)) != 0)
4532 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4535 * Note order: OP_LINK leaves the directory as the current
4538 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
4540 if ((status = decode_restorefh(&xdr)) != 0)
4542 decode_getfattr(&xdr, res->fattr, res->server);
4548 * Decode CREATE response
4550 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4552 struct xdr_stream xdr;
4553 struct compound_hdr hdr;
4556 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4557 status = decode_compound_hdr(&xdr, &hdr);
4560 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4563 if ((status = decode_putfh(&xdr)) != 0)
4565 if ((status = decode_savefh(&xdr)) != 0)
4567 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4569 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4571 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
4573 if ((status = decode_restorefh(&xdr)) != 0)
4575 decode_getfattr(&xdr, res->dir_fattr, res->server);
4581 * Decode SYMLINK response
4583 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4585 return nfs4_xdr_dec_create(rqstp, p, res);
4589 * Decode GETATTR response
4591 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
4593 struct xdr_stream xdr;
4594 struct compound_hdr hdr;
4597 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4598 status = decode_compound_hdr(&xdr, &hdr);
4601 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4604 status = decode_putfh(&xdr);
4607 status = decode_getfattr(&xdr, res->fattr, res->server);
4613 * Encode an SETACL request
4616 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
4618 struct xdr_stream xdr;
4619 struct compound_hdr hdr = {
4620 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
4624 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
4625 encode_compound_hdr(&xdr, req, &hdr);
4626 encode_sequence(&xdr, &args->seq_args, &hdr);
4627 encode_putfh(&xdr, args->fh, &hdr);
4628 status = encode_setacl(&xdr, args, &hdr);
4634 * Decode SETACL response
4637 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
4638 struct nfs_setaclres *res)
4640 struct xdr_stream xdr;
4641 struct compound_hdr hdr;
4644 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4645 status = decode_compound_hdr(&xdr, &hdr);
4648 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4651 status = decode_putfh(&xdr);
4654 status = decode_setattr(&xdr);
4660 * Decode GETACL response
4663 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
4664 struct nfs_getaclres *res)
4666 struct xdr_stream xdr;
4667 struct compound_hdr hdr;
4670 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4671 status = decode_compound_hdr(&xdr, &hdr);
4674 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4677 status = decode_putfh(&xdr);
4680 status = decode_getacl(&xdr, rqstp, &res->acl_len);
4687 * Decode CLOSE response
4689 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4691 struct xdr_stream xdr;
4692 struct compound_hdr hdr;
4695 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4696 status = decode_compound_hdr(&xdr, &hdr);
4699 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4702 status = decode_putfh(&xdr);
4705 status = decode_close(&xdr, res);
4709 * Note: Server may do delete on close for this file
4710 * in which case the getattr call will fail with
4711 * an ESTALE error. Shouldn't be a problem,
4712 * though, since fattr->valid will remain unset.
4714 decode_getfattr(&xdr, res->fattr, res->server);
4720 * Decode OPEN response
4722 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4724 struct xdr_stream xdr;
4725 struct compound_hdr hdr;
4728 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4729 status = decode_compound_hdr(&xdr, &hdr);
4732 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4735 status = decode_putfh(&xdr);
4738 status = decode_savefh(&xdr);
4741 status = decode_open(&xdr, res);
4744 if (decode_getfh(&xdr, &res->fh) != 0)
4746 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4748 if (decode_restorefh(&xdr) != 0)
4750 decode_getfattr(&xdr, res->dir_attr, res->server);
4756 * Decode OPEN_CONFIRM response
4758 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
4760 struct xdr_stream xdr;
4761 struct compound_hdr hdr;
4764 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4765 status = decode_compound_hdr(&xdr, &hdr);
4768 status = decode_putfh(&xdr);
4771 status = decode_open_confirm(&xdr, res);
4777 * Decode OPEN response
4779 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *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 status = decode_putfh(&xdr);
4795 status = decode_open(&xdr, res);
4798 decode_getfattr(&xdr, res->f_attr, res->server);
4804 * Decode SETATTR response
4806 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4808 struct xdr_stream xdr;
4809 struct compound_hdr hdr;
4812 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4813 status = decode_compound_hdr(&xdr, &hdr);
4816 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4819 status = decode_putfh(&xdr);
4822 status = decode_setattr(&xdr);
4825 decode_getfattr(&xdr, res->fattr, res->server);
4831 * Decode LOCK response
4833 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4835 struct xdr_stream xdr;
4836 struct compound_hdr hdr;
4839 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4840 status = decode_compound_hdr(&xdr, &hdr);
4843 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4846 status = decode_putfh(&xdr);
4849 status = decode_lock(&xdr, res);
4855 * Decode LOCKT response
4857 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
4859 struct xdr_stream xdr;
4860 struct compound_hdr hdr;
4863 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4864 status = decode_compound_hdr(&xdr, &hdr);
4867 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4870 status = decode_putfh(&xdr);
4873 status = decode_lockt(&xdr, res);
4879 * Decode LOCKU response
4881 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
4883 struct xdr_stream xdr;
4884 struct compound_hdr hdr;
4887 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4888 status = decode_compound_hdr(&xdr, &hdr);
4891 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4894 status = decode_putfh(&xdr);
4897 status = decode_locku(&xdr, res);
4903 * Decode READLINK response
4905 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
4906 struct nfs4_readlink_res *res)
4908 struct xdr_stream xdr;
4909 struct compound_hdr hdr;
4912 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4913 status = decode_compound_hdr(&xdr, &hdr);
4916 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4919 status = decode_putfh(&xdr);
4922 status = decode_readlink(&xdr, rqstp);
4928 * Decode READDIR response
4930 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
4932 struct xdr_stream xdr;
4933 struct compound_hdr hdr;
4936 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4937 status = decode_compound_hdr(&xdr, &hdr);
4940 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4943 status = decode_putfh(&xdr);
4946 status = decode_readdir(&xdr, rqstp, res);
4952 * Decode Read response
4954 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
4956 struct xdr_stream xdr;
4957 struct compound_hdr hdr;
4960 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4961 status = decode_compound_hdr(&xdr, &hdr);
4964 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4967 status = decode_putfh(&xdr);
4970 status = decode_read(&xdr, rqstp, res);
4972 status = res->count;
4978 * Decode WRITE response
4980 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4982 struct xdr_stream xdr;
4983 struct compound_hdr hdr;
4986 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4987 status = decode_compound_hdr(&xdr, &hdr);
4990 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4993 status = decode_putfh(&xdr);
4996 status = decode_write(&xdr, res);
4999 decode_getfattr(&xdr, res->fattr, res->server);
5001 status = res->count;
5007 * Decode COMMIT response
5009 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
5011 struct xdr_stream xdr;
5012 struct compound_hdr hdr;
5015 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5016 status = decode_compound_hdr(&xdr, &hdr);
5019 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5022 status = decode_putfh(&xdr);
5025 status = decode_commit(&xdr, res);
5028 decode_getfattr(&xdr, res->fattr, res->server);
5036 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5037 struct nfs4_fsinfo_res *res)
5039 struct xdr_stream xdr;
5040 struct compound_hdr hdr;
5043 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5044 status = decode_compound_hdr(&xdr, &hdr);
5046 status = decode_sequence(&xdr, &res->seq_res, req);
5048 status = decode_putfh(&xdr);
5050 status = decode_fsinfo(&xdr, res->fsinfo);
5057 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5058 struct nfs4_pathconf_res *res)
5060 struct xdr_stream xdr;
5061 struct compound_hdr hdr;
5064 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5065 status = decode_compound_hdr(&xdr, &hdr);
5067 status = decode_sequence(&xdr, &res->seq_res, req);
5069 status = decode_putfh(&xdr);
5071 status = decode_pathconf(&xdr, res->pathconf);
5078 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5079 struct nfs4_statfs_res *res)
5081 struct xdr_stream xdr;
5082 struct compound_hdr hdr;
5085 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5086 status = decode_compound_hdr(&xdr, &hdr);
5088 status = decode_sequence(&xdr, &res->seq_res, req);
5090 status = decode_putfh(&xdr);
5092 status = decode_statfs(&xdr, res->fsstat);
5097 * GETATTR_BITMAP request
5099 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
5101 struct xdr_stream xdr;
5102 struct compound_hdr hdr;
5105 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5106 status = decode_compound_hdr(&xdr, &hdr);
5109 status = decode_sequence(&xdr, &res->seq_res, req);
5112 if ((status = decode_putfh(&xdr)) != 0)
5114 status = decode_server_caps(&xdr, res);
5120 * Decode RENEW response
5122 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5124 struct xdr_stream xdr;
5125 struct compound_hdr hdr;
5128 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5129 status = decode_compound_hdr(&xdr, &hdr);
5131 status = decode_renew(&xdr);
5136 * a SETCLIENTID request
5138 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5139 struct nfs_client *clp)
5141 struct xdr_stream xdr;
5142 struct compound_hdr hdr;
5145 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5146 status = decode_compound_hdr(&xdr, &hdr);
5148 status = decode_setclientid(&xdr, clp);
5153 * a SETCLIENTID_CONFIRM request
5155 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
5157 struct xdr_stream xdr;
5158 struct compound_hdr hdr;
5161 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5162 status = decode_compound_hdr(&xdr, &hdr);
5164 status = decode_setclientid_confirm(&xdr);
5166 status = decode_putrootfh(&xdr);
5168 status = decode_fsinfo(&xdr, fsinfo);
5173 * DELEGRETURN request
5175 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
5177 struct xdr_stream xdr;
5178 struct compound_hdr hdr;
5181 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5182 status = decode_compound_hdr(&xdr, &hdr);
5185 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5188 status = decode_putfh(&xdr);
5191 status = decode_delegreturn(&xdr);
5192 decode_getfattr(&xdr, res->fattr, res->server);
5198 * FS_LOCATIONS request
5200 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5201 struct nfs4_fs_locations_res *res)
5203 struct xdr_stream xdr;
5204 struct compound_hdr hdr;
5207 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5208 status = decode_compound_hdr(&xdr, &hdr);
5211 status = decode_sequence(&xdr, &res->seq_res, req);
5214 if ((status = decode_putfh(&xdr)) != 0)
5216 if ((status = decode_lookup(&xdr)) != 0)
5218 xdr_enter_page(&xdr, PAGE_SIZE);
5219 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
5220 res->fs_locations->server);
5225 #if defined(CONFIG_NFS_V4_1)
5227 * EXCHANGE_ID request
5229 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5232 struct xdr_stream xdr;
5233 struct compound_hdr hdr;
5236 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5237 status = decode_compound_hdr(&xdr, &hdr);
5239 status = decode_exchange_id(&xdr, res);
5244 * a CREATE_SESSION request
5246 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5247 struct nfs41_create_session_res *res)
5249 struct xdr_stream xdr;
5250 struct compound_hdr hdr;
5253 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5254 status = decode_compound_hdr(&xdr, &hdr);
5256 status = decode_create_session(&xdr, res);
5261 * a DESTROY_SESSION request
5263 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5266 struct xdr_stream xdr;
5267 struct compound_hdr hdr;
5270 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5271 status = decode_compound_hdr(&xdr, &hdr);
5273 status = decode_destroy_session(&xdr, dummy);
5278 * a SEQUENCE request
5280 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5281 struct nfs4_sequence_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);
5290 status = decode_sequence(&xdr, res, rqstp);
5295 * a GET_LEASE_TIME request
5297 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5298 struct nfs4_get_lease_time_res *res)
5300 struct xdr_stream xdr;
5301 struct compound_hdr hdr;
5304 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5305 status = decode_compound_hdr(&xdr, &hdr);
5307 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
5309 status = decode_putrootfh(&xdr);
5311 status = decode_fsinfo(&xdr, res->lr_fsinfo);
5314 #endif /* CONFIG_NFS_V4_1 */
5316 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
5318 uint32_t bitmap[2] = {0};
5323 return ERR_PTR(-EAGAIN);
5325 return ERR_PTR(-EBADCOOKIE);
5328 entry->prev_cookie = entry->cookie;
5329 p = xdr_decode_hyper(p, &entry->cookie);
5330 entry->len = ntohl(*p++);
5331 entry->name = (const char *) p;
5332 p += XDR_QUADLEN(entry->len);
5335 * In case the server doesn't return an inode number,
5336 * we fake one here. (We don't use inode number 0,
5337 * since glibc seems to choke on it...)
5341 len = ntohl(*p++); /* bitmap length */
5343 bitmap[0] = ntohl(*p++);
5345 bitmap[1] = ntohl(*p++);
5349 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
5351 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
5352 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
5353 /* Ignore the return value of rdattr_error for now */
5357 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
5358 xdr_decode_hyper(p, &entry->ino);
5359 else if (bitmap[0] == FATTR4_WORD0_FILEID)
5360 xdr_decode_hyper(p, &entry->ino);
5364 entry->eof = !p[0] && p[1];
5369 * We need to translate between nfs status return values and
5370 * the local errno values which may not be the same.
5377 { NFS4ERR_PERM, -EPERM },
5378 { NFS4ERR_NOENT, -ENOENT },
5379 { NFS4ERR_IO, -errno_NFSERR_IO},
5380 { NFS4ERR_NXIO, -ENXIO },
5381 { NFS4ERR_ACCESS, -EACCES },
5382 { NFS4ERR_EXIST, -EEXIST },
5383 { NFS4ERR_XDEV, -EXDEV },
5384 { NFS4ERR_NOTDIR, -ENOTDIR },
5385 { NFS4ERR_ISDIR, -EISDIR },
5386 { NFS4ERR_INVAL, -EINVAL },
5387 { NFS4ERR_FBIG, -EFBIG },
5388 { NFS4ERR_NOSPC, -ENOSPC },
5389 { NFS4ERR_ROFS, -EROFS },
5390 { NFS4ERR_MLINK, -EMLINK },
5391 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
5392 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
5393 { NFS4ERR_DQUOT, -EDQUOT },
5394 { NFS4ERR_STALE, -ESTALE },
5395 { NFS4ERR_BADHANDLE, -EBADHANDLE },
5396 { NFS4ERR_BADOWNER, -EINVAL },
5397 { NFS4ERR_BADNAME, -EINVAL },
5398 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
5399 { NFS4ERR_NOTSUPP, -ENOTSUPP },
5400 { NFS4ERR_TOOSMALL, -ETOOSMALL },
5401 { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
5402 { NFS4ERR_BADTYPE, -EBADTYPE },
5403 { NFS4ERR_LOCKED, -EAGAIN },
5404 { NFS4ERR_RESOURCE, -EREMOTEIO },
5405 { NFS4ERR_SYMLINK, -ELOOP },
5406 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
5407 { NFS4ERR_DEADLOCK, -EDEADLK },
5408 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
5409 * to be handled by a
5416 * Convert an NFS error code to a local one.
5417 * This one is used jointly by NFSv2 and NFSv3.
5420 nfs4_stat_to_errno(int stat)
5423 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
5424 if (nfs_errtbl[i].stat == stat)
5425 return nfs_errtbl[i].errno;
5427 if (stat <= 10000 || stat > 10100) {
5428 /* The server is looney tunes. */
5429 return -ESERVERFAULT;
5431 /* If we cannot translate the error, the recovery routines should
5433 * Note: remaining NFSv4 error codes have values > 10000, so should
5434 * not conflict with native Linux error codes.
5439 #define PROC(proc, argtype, restype) \
5440 [NFSPROC4_CLNT_##proc] = { \
5441 .p_proc = NFSPROC4_COMPOUND, \
5442 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
5443 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
5444 .p_arglen = NFS4_##argtype##_sz, \
5445 .p_replen = NFS4_##restype##_sz, \
5446 .p_statidx = NFSPROC4_CLNT_##proc, \
5450 struct rpc_procinfo nfs4_procedures[] = {
5451 PROC(READ, enc_read, dec_read),
5452 PROC(WRITE, enc_write, dec_write),
5453 PROC(COMMIT, enc_commit, dec_commit),
5454 PROC(OPEN, enc_open, dec_open),
5455 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
5456 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
5457 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
5458 PROC(CLOSE, enc_close, dec_close),
5459 PROC(SETATTR, enc_setattr, dec_setattr),
5460 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
5461 PROC(RENEW, enc_renew, dec_renew),
5462 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
5463 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
5464 PROC(LOCK, enc_lock, dec_lock),
5465 PROC(LOCKT, enc_lockt, dec_lockt),
5466 PROC(LOCKU, enc_locku, dec_locku),
5467 PROC(ACCESS, enc_access, dec_access),
5468 PROC(GETATTR, enc_getattr, dec_getattr),
5469 PROC(LOOKUP, enc_lookup, dec_lookup),
5470 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
5471 PROC(REMOVE, enc_remove, dec_remove),
5472 PROC(RENAME, enc_rename, dec_rename),
5473 PROC(LINK, enc_link, dec_link),
5474 PROC(SYMLINK, enc_symlink, dec_symlink),
5475 PROC(CREATE, enc_create, dec_create),
5476 PROC(PATHCONF, enc_pathconf, dec_pathconf),
5477 PROC(STATFS, enc_statfs, dec_statfs),
5478 PROC(READLINK, enc_readlink, dec_readlink),
5479 PROC(READDIR, enc_readdir, dec_readdir),
5480 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
5481 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
5482 PROC(GETACL, enc_getacl, dec_getacl),
5483 PROC(SETACL, enc_setacl, dec_setacl),
5484 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
5485 #if defined(CONFIG_NFS_V4_1)
5486 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
5487 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
5488 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
5489 PROC(SEQUENCE, enc_sequence, dec_sequence),
5490 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5491 #endif /* CONFIG_NFS_V4_1 */
5494 struct rpc_version nfs_version4 = {
5496 .nrprocs = ARRAY_SIZE(nfs4_procedures),
5497 .procs = nfs4_procedures