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 */
705 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
707 __be32 *p = xdr_reserve_space(xdr, nbytes);
712 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
716 p = xdr_reserve_space(xdr, 4 + len);
718 xdr_encode_opaque(p, str, len);
721 static void encode_compound_hdr(struct xdr_stream *xdr,
722 struct rpc_rqst *req,
723 struct compound_hdr *hdr)
726 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
728 /* initialize running count of expected bytes in reply.
729 * NOTE: the replied tag SHOULD be the same is the one sent,
730 * but this is not required as a MUST for the server to do so. */
731 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
733 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
734 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
735 p = reserve_space(xdr, 12 + hdr->taglen);
736 *p++ = cpu_to_be32(hdr->taglen);
737 p = xdr_encode_opaque_fixed(p, hdr->tag, hdr->taglen);
738 *p++ = cpu_to_be32(hdr->minorversion);
740 *p++ = cpu_to_be32(hdr->nops);
743 static void encode_nops(struct compound_hdr *hdr)
745 BUG_ON(hdr->nops > NFS4_MAX_OPS);
746 *hdr->nops_p = htonl(hdr->nops);
749 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
753 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
755 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
758 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
760 char owner_name[IDMAP_NAMESZ];
761 char owner_group[IDMAP_NAMESZ];
762 int owner_namelen = 0;
763 int owner_grouplen = 0;
771 * We reserve enough space to write the entire attribute buffer at once.
772 * In the worst-case, this would be
773 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
774 * = 36 bytes, plus any contribution from variable-length fields
775 * such as owner/group.
780 if (iap->ia_valid & ATTR_SIZE)
782 if (iap->ia_valid & ATTR_MODE)
784 if (iap->ia_valid & ATTR_UID) {
785 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
786 if (owner_namelen < 0) {
787 dprintk("nfs: couldn't resolve uid %d to string\n",
790 strcpy(owner_name, "nobody");
791 owner_namelen = sizeof("nobody") - 1;
794 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
796 if (iap->ia_valid & ATTR_GID) {
797 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
798 if (owner_grouplen < 0) {
799 dprintk("nfs: couldn't resolve gid %d to string\n",
801 strcpy(owner_group, "nobody");
802 owner_grouplen = sizeof("nobody") - 1;
805 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
807 if (iap->ia_valid & ATTR_ATIME_SET)
809 else if (iap->ia_valid & ATTR_ATIME)
811 if (iap->ia_valid & ATTR_MTIME_SET)
813 else if (iap->ia_valid & ATTR_MTIME)
815 p = reserve_space(xdr, len);
818 * We write the bitmap length now, but leave the bitmap and the attribute
819 * buffer length to be backfilled at the end of this routine.
821 *p++ = cpu_to_be32(2);
825 if (iap->ia_valid & ATTR_SIZE) {
826 bmval0 |= FATTR4_WORD0_SIZE;
827 p = xdr_encode_hyper(p, iap->ia_size);
829 if (iap->ia_valid & ATTR_MODE) {
830 bmval1 |= FATTR4_WORD1_MODE;
831 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
833 if (iap->ia_valid & ATTR_UID) {
834 bmval1 |= FATTR4_WORD1_OWNER;
835 *p++ = cpu_to_be32(owner_namelen);
836 p = xdr_encode_opaque_fixed(p, owner_name, owner_namelen);
838 if (iap->ia_valid & ATTR_GID) {
839 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
840 *p++ = cpu_to_be32(owner_grouplen);
841 p = xdr_encode_opaque_fixed(p, owner_group, owner_grouplen);
843 if (iap->ia_valid & ATTR_ATIME_SET) {
844 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
845 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
846 *p++ = cpu_to_be32(0);
847 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
848 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
850 else if (iap->ia_valid & ATTR_ATIME) {
851 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
852 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
854 if (iap->ia_valid & ATTR_MTIME_SET) {
855 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
856 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
857 *p++ = cpu_to_be32(0);
858 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
859 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
861 else if (iap->ia_valid & ATTR_MTIME) {
862 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
863 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
867 * Now we backfill the bitmap and the attribute buffer length.
869 if (len != ((char *)p - (char *)q) + 4) {
870 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
871 len, ((char *)p - (char *)q) + 4);
874 len = (char *)p - (char *)q - 12;
875 *q++ = htonl(bmval0);
876 *q++ = htonl(bmval1);
882 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
886 p = reserve_space(xdr, 8);
887 *p++ = cpu_to_be32(OP_ACCESS);
888 *p++ = cpu_to_be32(access);
890 hdr->replen += decode_access_maxsz;
893 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
897 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
898 *p++ = cpu_to_be32(OP_CLOSE);
899 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
900 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
902 hdr->replen += decode_close_maxsz;
905 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
909 p = reserve_space(xdr, 16);
910 *p++ = cpu_to_be32(OP_COMMIT);
911 p = xdr_encode_hyper(p, args->offset);
912 *p++ = cpu_to_be32(args->count);
914 hdr->replen += decode_commit_maxsz;
917 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
921 p = reserve_space(xdr, 8);
922 *p++ = cpu_to_be32(OP_CREATE);
923 *p++ = cpu_to_be32(create->ftype);
925 switch (create->ftype) {
927 p = reserve_space(xdr, 4);
928 *p++ = cpu_to_be32(create->u.symlink.len);
929 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
932 case NF4BLK: case NF4CHR:
933 p = reserve_space(xdr, 8);
934 *p++ = cpu_to_be32(create->u.device.specdata1);
935 *p++ = cpu_to_be32(create->u.device.specdata2);
942 p = reserve_space(xdr, 4 + create->name->len);
943 *p++ = cpu_to_be32(create->name->len);
944 p = xdr_encode_opaque_fixed(p, create->name->name, create->name->len);
946 hdr->replen += decode_create_maxsz;
948 encode_attrs(xdr, create->attrs, create->server);
951 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
955 p = reserve_space(xdr, 12);
956 *p++ = cpu_to_be32(OP_GETATTR);
957 *p++ = cpu_to_be32(1);
958 *p++ = cpu_to_be32(bitmap);
960 hdr->replen += decode_getattr_maxsz;
963 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
967 p = reserve_space(xdr, 16);
968 *p++ = cpu_to_be32(OP_GETATTR);
969 *p++ = cpu_to_be32(2);
970 *p++ = cpu_to_be32(bm0);
971 *p++ = cpu_to_be32(bm1);
973 hdr->replen += decode_getattr_maxsz;
976 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
978 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
979 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
982 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
984 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
985 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
988 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
990 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
991 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
994 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
998 p = reserve_space(xdr, 4);
999 *p++ = cpu_to_be32(OP_GETFH);
1001 hdr->replen += decode_getfh_maxsz;
1004 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1008 p = reserve_space(xdr, 8 + name->len);
1009 *p++ = cpu_to_be32(OP_LINK);
1010 *p++ = cpu_to_be32(name->len);
1011 p = xdr_encode_opaque_fixed(p, name->name, name->len);
1013 hdr->replen += decode_link_maxsz;
1016 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1018 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1019 return block ? NFS4_READW_LT : NFS4_READ_LT;
1020 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1023 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1025 if (fl->fl_end == OFFSET_MAX)
1026 return ~(uint64_t)0;
1027 return fl->fl_end - fl->fl_start + 1;
1031 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1032 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1034 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1038 p = reserve_space(xdr, 32);
1039 *p++ = cpu_to_be32(OP_LOCK);
1040 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1041 *p++ = cpu_to_be32(args->reclaim);
1042 p = xdr_encode_hyper(p, args->fl->fl_start);
1043 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1044 *p++ = cpu_to_be32(args->new_lock_owner);
1045 if (args->new_lock_owner){
1046 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+32);
1047 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1048 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1049 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1050 p = xdr_encode_hyper(p, args->lock_owner.clientid);
1051 *p++ = cpu_to_be32(16);
1052 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1053 p = xdr_encode_hyper(p, args->lock_owner.id);
1056 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1057 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1058 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1061 hdr->replen += decode_lock_maxsz;
1064 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1068 p = reserve_space(xdr, 52);
1069 *p++ = cpu_to_be32(OP_LOCKT);
1070 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1071 p = xdr_encode_hyper(p, args->fl->fl_start);
1072 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1073 p = xdr_encode_hyper(p, args->lock_owner.clientid);
1074 *p++ = cpu_to_be32(16);
1075 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1076 p = xdr_encode_hyper(p, args->lock_owner.id);
1078 hdr->replen += decode_lockt_maxsz;
1081 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1085 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1086 *p++ = cpu_to_be32(OP_LOCKU);
1087 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1088 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1089 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1090 p = xdr_encode_hyper(p, args->fl->fl_start);
1091 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1093 hdr->replen += decode_locku_maxsz;
1096 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1098 int len = name->len;
1101 p = reserve_space(xdr, 8 + len);
1102 *p++ = cpu_to_be32(OP_LOOKUP);
1103 *p++ = cpu_to_be32(len);
1104 p = xdr_encode_opaque_fixed(p, name->name, len);
1106 hdr->replen += decode_lookup_maxsz;
1109 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1113 p = reserve_space(xdr, 8);
1114 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1116 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1119 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1121 case FMODE_READ|FMODE_WRITE:
1122 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1125 *p++ = cpu_to_be32(0);
1127 *p++ = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1130 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1134 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1137 p = reserve_space(xdr, 8);
1138 *p++ = cpu_to_be32(OP_OPEN);
1139 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1140 encode_share_access(xdr, arg->fmode);
1141 p = reserve_space(xdr, 28);
1142 p = xdr_encode_hyper(p, arg->clientid);
1143 *p++ = cpu_to_be32(16);
1144 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1145 p = xdr_encode_hyper(p, arg->id);
1148 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1152 p = reserve_space(xdr, 4);
1153 switch(arg->open_flags & O_EXCL) {
1155 *p++ = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1156 encode_attrs(xdr, arg->u.attrs, arg->server);
1159 *p++ = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1160 encode_nfs4_verifier(xdr, &arg->u.verifier);
1164 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1168 p = reserve_space(xdr, 4);
1169 switch (arg->open_flags & O_CREAT) {
1171 *p++ = cpu_to_be32(NFS4_OPEN_NOCREATE);
1174 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1175 *p++ = cpu_to_be32(NFS4_OPEN_CREATE);
1176 encode_createmode(xdr, arg);
1180 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1184 p = reserve_space(xdr, 4);
1185 switch (delegation_type) {
1187 *p++ = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1190 *p++ = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1192 case FMODE_WRITE|FMODE_READ:
1193 *p++ = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1200 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1204 p = reserve_space(xdr, 4);
1205 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1206 encode_string(xdr, name->len, name->name);
1209 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1213 p = reserve_space(xdr, 4);
1214 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1215 encode_delegation_type(xdr, type);
1218 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1222 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1223 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1224 p = xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1225 encode_string(xdr, name->len, name->name);
1228 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1230 encode_openhdr(xdr, arg);
1231 encode_opentype(xdr, arg);
1232 switch (arg->claim) {
1233 case NFS4_OPEN_CLAIM_NULL:
1234 encode_claim_null(xdr, arg->name);
1236 case NFS4_OPEN_CLAIM_PREVIOUS:
1237 encode_claim_previous(xdr, arg->u.delegation_type);
1239 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1240 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1246 hdr->replen += decode_open_maxsz;
1249 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1253 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1254 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1255 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1256 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1258 hdr->replen += decode_open_confirm_maxsz;
1261 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1265 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1266 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1267 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1268 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1269 encode_share_access(xdr, arg->fmode);
1271 hdr->replen += decode_open_downgrade_maxsz;
1275 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1280 p = reserve_space(xdr, 8 + len);
1281 *p++ = cpu_to_be32(OP_PUTFH);
1282 *p++ = cpu_to_be32(len);
1283 p = xdr_encode_opaque_fixed(p, fh->data, len);
1285 hdr->replen += decode_putfh_maxsz;
1288 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1292 p = reserve_space(xdr, 4);
1293 *p++ = cpu_to_be32(OP_PUTROOTFH);
1295 hdr->replen += decode_putrootfh_maxsz;
1298 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1300 nfs4_stateid stateid;
1303 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1304 if (ctx->state != NULL) {
1305 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1306 p = xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1308 p = xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1311 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1315 p = reserve_space(xdr, 4);
1316 *p++ = cpu_to_be32(OP_READ);
1318 encode_stateid(xdr, args->context);
1320 p = reserve_space(xdr, 12);
1321 p = xdr_encode_hyper(p, args->offset);
1322 *p++ = cpu_to_be32(args->count);
1324 hdr->replen += decode_read_maxsz;
1327 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1329 uint32_t attrs[2] = {
1330 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1331 FATTR4_WORD1_MOUNTED_ON_FILEID,
1335 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1336 *p++ = cpu_to_be32(OP_READDIR);
1337 p = xdr_encode_hyper(p, readdir->cookie);
1338 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1339 *p++ = cpu_to_be32(readdir->count >> 1); /* We're not doing readdirplus */
1340 *p++ = cpu_to_be32(readdir->count);
1341 *p++ = cpu_to_be32(2);
1342 /* Switch to mounted_on_fileid if the server supports it */
1343 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1344 attrs[0] &= ~FATTR4_WORD0_FILEID;
1346 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1347 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1348 *p++ = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1350 hdr->replen += decode_readdir_maxsz;
1351 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1353 (unsigned long long)readdir->cookie,
1354 ((u32 *)readdir->verifier.data)[0],
1355 ((u32 *)readdir->verifier.data)[1],
1356 attrs[0] & readdir->bitmask[0],
1357 attrs[1] & readdir->bitmask[1]);
1360 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1364 p = reserve_space(xdr, 4);
1365 *p++ = cpu_to_be32(OP_READLINK);
1367 hdr->replen += decode_readlink_maxsz;
1370 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1374 p = reserve_space(xdr, 8 + name->len);
1375 *p++ = cpu_to_be32(OP_REMOVE);
1376 *p++ = cpu_to_be32(name->len);
1377 p = xdr_encode_opaque_fixed(p, name->name, name->len);
1379 hdr->replen += decode_remove_maxsz;
1382 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1386 p = reserve_space(xdr, 8 + oldname->len);
1387 *p++ = cpu_to_be32(OP_RENAME);
1388 *p++ = cpu_to_be32(oldname->len);
1389 p = xdr_encode_opaque_fixed(p, oldname->name, oldname->len);
1391 p = reserve_space(xdr, 4 + newname->len);
1392 *p++ = cpu_to_be32(newname->len);
1393 p = xdr_encode_opaque_fixed(p, newname->name, newname->len);
1395 hdr->replen += decode_rename_maxsz;
1398 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1402 p = reserve_space(xdr, 12);
1403 *p++ = cpu_to_be32(OP_RENEW);
1404 p = xdr_encode_hyper(p, client_stateid->cl_clientid);
1406 hdr->replen += decode_renew_maxsz;
1410 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1414 p = reserve_space(xdr, 4);
1415 *p++ = cpu_to_be32(OP_RESTOREFH);
1417 hdr->replen += decode_restorefh_maxsz;
1421 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1425 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1426 *p++ = cpu_to_be32(OP_SETATTR);
1427 p = xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1428 p = reserve_space(xdr, 2*4);
1429 *p++ = cpu_to_be32(1);
1430 *p++ = cpu_to_be32(FATTR4_WORD0_ACL);
1431 if (arg->acl_len % 4)
1433 p = reserve_space(xdr, 4);
1434 *p++ = cpu_to_be32(arg->acl_len);
1435 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1437 hdr->replen += decode_setacl_maxsz;
1442 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1446 p = reserve_space(xdr, 4);
1447 *p++ = cpu_to_be32(OP_SAVEFH);
1449 hdr->replen += decode_savefh_maxsz;
1452 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1456 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1457 *p++ = cpu_to_be32(OP_SETATTR);
1458 p = xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1460 hdr->replen += decode_setattr_maxsz;
1461 encode_attrs(xdr, arg->iap, server);
1464 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1468 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1469 *p++ = cpu_to_be32(OP_SETCLIENTID);
1470 p = xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1472 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1473 p = reserve_space(xdr, 4);
1474 *p++ = cpu_to_be32(setclientid->sc_prog);
1475 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1476 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1477 p = reserve_space(xdr, 4);
1478 *p++ = cpu_to_be32(setclientid->sc_cb_ident);
1480 hdr->replen += decode_setclientid_maxsz;
1483 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
1487 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1488 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1489 p = xdr_encode_hyper(p, client_state->cl_clientid);
1490 p = xdr_encode_opaque_fixed(p, client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1492 hdr->replen += decode_setclientid_confirm_maxsz;
1495 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1499 p = reserve_space(xdr, 4);
1500 *p++ = cpu_to_be32(OP_WRITE);
1502 encode_stateid(xdr, args->context);
1504 p = reserve_space(xdr, 16);
1505 p = xdr_encode_hyper(p, args->offset);
1506 *p++ = cpu_to_be32(args->stable);
1507 *p++ = cpu_to_be32(args->count);
1509 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1511 hdr->replen += decode_write_maxsz;
1514 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1518 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1520 *p++ = cpu_to_be32(OP_DELEGRETURN);
1521 p = xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1523 hdr->replen += decode_delegreturn_maxsz;
1526 #if defined(CONFIG_NFS_V4_1)
1527 /* NFSv4.1 operations */
1528 static void encode_exchange_id(struct xdr_stream *xdr,
1529 struct nfs41_exchange_id_args *args,
1530 struct compound_hdr *hdr)
1534 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1535 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1536 p = xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1538 encode_string(xdr, args->id_len, args->id);
1540 p = reserve_space(xdr, 12);
1541 *p++ = cpu_to_be32(args->flags);
1542 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1543 *p++ = cpu_to_be32(0); /* zero length implementation id array */
1545 hdr->replen += decode_exchange_id_maxsz;
1548 static void encode_create_session(struct xdr_stream *xdr,
1549 struct nfs41_create_session_args *args,
1550 struct compound_hdr *hdr)
1553 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1555 struct nfs_client *clp = args->client;
1557 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1560 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1561 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1562 p = xdr_encode_hyper(p, clp->cl_ex_clid);
1563 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1564 *p++ = cpu_to_be32(args->flags); /*flags */
1567 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1568 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1569 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1570 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1571 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1572 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1573 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1576 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1577 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1578 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1579 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1580 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1581 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1582 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1584 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1585 *p++ = cpu_to_be32(1);
1586 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1588 /* authsys_parms rfc1831 */
1589 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1590 *p++ = cpu_to_be32(len);
1591 p = xdr_encode_opaque_fixed(p, machine_name, len);
1592 *p++ = cpu_to_be32(0); /* UID */
1593 *p++ = cpu_to_be32(0); /* GID */
1594 *p++ = cpu_to_be32(0); /* No more gids */
1596 hdr->replen += decode_create_session_maxsz;
1599 static void encode_destroy_session(struct xdr_stream *xdr,
1600 struct nfs4_session *session,
1601 struct compound_hdr *hdr)
1604 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1605 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1606 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1608 hdr->replen += decode_destroy_session_maxsz;
1610 #endif /* CONFIG_NFS_V4_1 */
1612 static void encode_sequence(struct xdr_stream *xdr,
1613 const struct nfs4_sequence_args *args,
1614 struct compound_hdr *hdr)
1616 #if defined(CONFIG_NFS_V4_1)
1617 struct nfs4_session *session = args->sa_session;
1618 struct nfs4_slot_table *tp;
1619 struct nfs4_slot *slot;
1625 tp = &session->fc_slot_table;
1627 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1628 slot = tp->slots + args->sa_slotid;
1630 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1631 *p++ = cpu_to_be32(OP_SEQUENCE);
1634 * Sessionid + seqid + slotid + max slotid + cache_this
1636 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1637 "max_slotid=%d cache_this=%d\n",
1639 ((u32 *)session->sess_id.data)[0],
1640 ((u32 *)session->sess_id.data)[1],
1641 ((u32 *)session->sess_id.data)[2],
1642 ((u32 *)session->sess_id.data)[3],
1643 slot->seq_nr, args->sa_slotid,
1644 tp->highest_used_slotid, args->sa_cache_this);
1645 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1646 *p++ = cpu_to_be32(slot->seq_nr);
1647 *p++ = cpu_to_be32(args->sa_slotid);
1648 *p++ = cpu_to_be32(tp->highest_used_slotid);
1649 *p++ = cpu_to_be32(args->sa_cache_this);
1651 hdr->replen += decode_sequence_maxsz;
1652 #endif /* CONFIG_NFS_V4_1 */
1656 * END OF "GENERIC" ENCODE ROUTINES.
1659 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1661 #if defined(CONFIG_NFS_V4_1)
1662 if (args->sa_session)
1663 return args->sa_session->clp->cl_minorversion;
1664 #endif /* CONFIG_NFS_V4_1 */
1669 * Encode an ACCESS request
1671 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1673 struct xdr_stream xdr;
1674 struct compound_hdr hdr = {
1675 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1678 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1679 encode_compound_hdr(&xdr, req, &hdr);
1680 encode_sequence(&xdr, &args->seq_args, &hdr);
1681 encode_putfh(&xdr, args->fh, &hdr);
1682 encode_access(&xdr, args->access, &hdr);
1683 encode_getfattr(&xdr, args->bitmask, &hdr);
1689 * Encode LOOKUP request
1691 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1693 struct xdr_stream xdr;
1694 struct compound_hdr hdr = {
1695 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1698 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1699 encode_compound_hdr(&xdr, req, &hdr);
1700 encode_sequence(&xdr, &args->seq_args, &hdr);
1701 encode_putfh(&xdr, args->dir_fh, &hdr);
1702 encode_lookup(&xdr, args->name, &hdr);
1703 encode_getfh(&xdr, &hdr);
1704 encode_getfattr(&xdr, args->bitmask, &hdr);
1710 * Encode LOOKUP_ROOT request
1712 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1714 struct xdr_stream xdr;
1715 struct compound_hdr hdr = {
1716 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1719 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1720 encode_compound_hdr(&xdr, req, &hdr);
1721 encode_sequence(&xdr, &args->seq_args, &hdr);
1722 encode_putrootfh(&xdr, &hdr);
1723 encode_getfh(&xdr, &hdr);
1724 encode_getfattr(&xdr, args->bitmask, &hdr);
1730 * Encode REMOVE request
1732 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1734 struct xdr_stream xdr;
1735 struct compound_hdr hdr = {
1736 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1739 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1740 encode_compound_hdr(&xdr, req, &hdr);
1741 encode_sequence(&xdr, &args->seq_args, &hdr);
1742 encode_putfh(&xdr, args->fh, &hdr);
1743 encode_remove(&xdr, &args->name, &hdr);
1744 encode_getfattr(&xdr, args->bitmask, &hdr);
1750 * Encode RENAME request
1752 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1754 struct xdr_stream xdr;
1755 struct compound_hdr hdr = {
1756 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1759 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1760 encode_compound_hdr(&xdr, req, &hdr);
1761 encode_sequence(&xdr, &args->seq_args, &hdr);
1762 encode_putfh(&xdr, args->old_dir, &hdr);
1763 encode_savefh(&xdr, &hdr);
1764 encode_putfh(&xdr, args->new_dir, &hdr);
1765 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1766 encode_getfattr(&xdr, args->bitmask, &hdr);
1767 encode_restorefh(&xdr, &hdr);
1768 encode_getfattr(&xdr, args->bitmask, &hdr);
1774 * Encode LINK request
1776 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_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->fh, &hdr);
1787 encode_savefh(&xdr, &hdr);
1788 encode_putfh(&xdr, args->dir_fh, &hdr);
1789 encode_link(&xdr, args->name, &hdr);
1790 encode_getfattr(&xdr, args->bitmask, &hdr);
1791 encode_restorefh(&xdr, &hdr);
1792 encode_getfattr(&xdr, args->bitmask, &hdr);
1798 * Encode CREATE request
1800 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_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->dir_fh, &hdr);
1811 encode_savefh(&xdr, &hdr);
1812 encode_create(&xdr, args, &hdr);
1813 encode_getfh(&xdr, &hdr);
1814 encode_getfattr(&xdr, args->bitmask, &hdr);
1815 encode_restorefh(&xdr, &hdr);
1816 encode_getfattr(&xdr, args->bitmask, &hdr);
1822 * Encode SYMLINK request
1824 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1826 return nfs4_xdr_enc_create(req, p, args);
1830 * Encode GETATTR request
1832 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1834 struct xdr_stream xdr;
1835 struct compound_hdr hdr = {
1836 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1839 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1840 encode_compound_hdr(&xdr, req, &hdr);
1841 encode_sequence(&xdr, &args->seq_args, &hdr);
1842 encode_putfh(&xdr, args->fh, &hdr);
1843 encode_getfattr(&xdr, args->bitmask, &hdr);
1849 * Encode a CLOSE request
1851 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1853 struct xdr_stream xdr;
1854 struct compound_hdr hdr = {
1855 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1858 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1859 encode_compound_hdr(&xdr, req, &hdr);
1860 encode_sequence(&xdr, &args->seq_args, &hdr);
1861 encode_putfh(&xdr, args->fh, &hdr);
1862 encode_close(&xdr, args, &hdr);
1863 encode_getfattr(&xdr, args->bitmask, &hdr);
1869 * Encode an OPEN request
1871 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1873 struct xdr_stream xdr;
1874 struct compound_hdr hdr = {
1875 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1878 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1879 encode_compound_hdr(&xdr, req, &hdr);
1880 encode_sequence(&xdr, &args->seq_args, &hdr);
1881 encode_putfh(&xdr, args->fh, &hdr);
1882 encode_savefh(&xdr, &hdr);
1883 encode_open(&xdr, args, &hdr);
1884 encode_getfh(&xdr, &hdr);
1885 encode_getfattr(&xdr, args->bitmask, &hdr);
1886 encode_restorefh(&xdr, &hdr);
1887 encode_getfattr(&xdr, args->bitmask, &hdr);
1893 * Encode an OPEN_CONFIRM request
1895 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1897 struct xdr_stream xdr;
1898 struct compound_hdr hdr = {
1902 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1903 encode_compound_hdr(&xdr, req, &hdr);
1904 encode_putfh(&xdr, args->fh, &hdr);
1905 encode_open_confirm(&xdr, args, &hdr);
1911 * Encode an OPEN request with no attributes.
1913 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1915 struct xdr_stream xdr;
1916 struct compound_hdr hdr = {
1917 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1920 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1921 encode_compound_hdr(&xdr, req, &hdr);
1922 encode_sequence(&xdr, &args->seq_args, &hdr);
1923 encode_putfh(&xdr, args->fh, &hdr);
1924 encode_open(&xdr, args, &hdr);
1925 encode_getfattr(&xdr, args->bitmask, &hdr);
1931 * Encode an OPEN_DOWNGRADE request
1933 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1935 struct xdr_stream xdr;
1936 struct compound_hdr hdr = {
1937 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1940 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1941 encode_compound_hdr(&xdr, req, &hdr);
1942 encode_sequence(&xdr, &args->seq_args, &hdr);
1943 encode_putfh(&xdr, args->fh, &hdr);
1944 encode_open_downgrade(&xdr, args, &hdr);
1945 encode_getfattr(&xdr, args->bitmask, &hdr);
1951 * Encode a LOCK request
1953 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1955 struct xdr_stream xdr;
1956 struct compound_hdr hdr = {
1957 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1960 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1961 encode_compound_hdr(&xdr, req, &hdr);
1962 encode_sequence(&xdr, &args->seq_args, &hdr);
1963 encode_putfh(&xdr, args->fh, &hdr);
1964 encode_lock(&xdr, args, &hdr);
1970 * Encode a LOCKT request
1972 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1974 struct xdr_stream xdr;
1975 struct compound_hdr hdr = {
1976 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1979 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1980 encode_compound_hdr(&xdr, req, &hdr);
1981 encode_sequence(&xdr, &args->seq_args, &hdr);
1982 encode_putfh(&xdr, args->fh, &hdr);
1983 encode_lockt(&xdr, args, &hdr);
1989 * Encode a LOCKU request
1991 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1993 struct xdr_stream xdr;
1994 struct compound_hdr hdr = {
1995 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1998 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1999 encode_compound_hdr(&xdr, req, &hdr);
2000 encode_sequence(&xdr, &args->seq_args, &hdr);
2001 encode_putfh(&xdr, args->fh, &hdr);
2002 encode_locku(&xdr, args, &hdr);
2008 * Encode a READLINK request
2010 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
2012 struct xdr_stream xdr;
2013 struct compound_hdr hdr = {
2014 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2017 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2018 encode_compound_hdr(&xdr, req, &hdr);
2019 encode_sequence(&xdr, &args->seq_args, &hdr);
2020 encode_putfh(&xdr, args->fh, &hdr);
2021 encode_readlink(&xdr, args, req, &hdr);
2023 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2024 args->pgbase, args->pglen);
2030 * Encode a READDIR request
2032 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
2034 struct xdr_stream xdr;
2035 struct compound_hdr hdr = {
2036 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2039 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2040 encode_compound_hdr(&xdr, req, &hdr);
2041 encode_sequence(&xdr, &args->seq_args, &hdr);
2042 encode_putfh(&xdr, args->fh, &hdr);
2043 encode_readdir(&xdr, args, req, &hdr);
2045 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2046 args->pgbase, args->count);
2047 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2048 __func__, hdr.replen << 2, args->pages,
2049 args->pgbase, args->count);
2055 * Encode a READ request
2057 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
2059 struct xdr_stream xdr;
2060 struct compound_hdr hdr = {
2061 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2064 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2065 encode_compound_hdr(&xdr, req, &hdr);
2066 encode_sequence(&xdr, &args->seq_args, &hdr);
2067 encode_putfh(&xdr, args->fh, &hdr);
2068 encode_read(&xdr, args, &hdr);
2070 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2071 args->pages, args->pgbase, args->count);
2072 req->rq_rcv_buf.flags |= XDRBUF_READ;
2078 * Encode an SETATTR request
2080 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
2082 struct xdr_stream xdr;
2083 struct compound_hdr hdr = {
2084 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2087 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2088 encode_compound_hdr(&xdr, req, &hdr);
2089 encode_sequence(&xdr, &args->seq_args, &hdr);
2090 encode_putfh(&xdr, args->fh, &hdr);
2091 encode_setattr(&xdr, args, args->server, &hdr);
2092 encode_getfattr(&xdr, args->bitmask, &hdr);
2098 * Encode a GETACL request
2101 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
2102 struct nfs_getaclargs *args)
2104 struct xdr_stream xdr;
2105 struct compound_hdr hdr = {
2106 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2110 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2111 encode_compound_hdr(&xdr, req, &hdr);
2112 encode_sequence(&xdr, &args->seq_args, &hdr);
2113 encode_putfh(&xdr, args->fh, &hdr);
2114 replen = hdr.replen + nfs4_fattr_bitmap_maxsz + 1;
2115 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2117 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2118 args->acl_pages, args->acl_pgbase, args->acl_len);
2124 * Encode a WRITE request
2126 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2128 struct xdr_stream xdr;
2129 struct compound_hdr hdr = {
2130 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2133 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2134 encode_compound_hdr(&xdr, req, &hdr);
2135 encode_sequence(&xdr, &args->seq_args, &hdr);
2136 encode_putfh(&xdr, args->fh, &hdr);
2137 encode_write(&xdr, args, &hdr);
2138 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2139 encode_getfattr(&xdr, args->bitmask, &hdr);
2147 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2149 struct xdr_stream xdr;
2150 struct compound_hdr hdr = {
2151 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2154 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2155 encode_compound_hdr(&xdr, req, &hdr);
2156 encode_sequence(&xdr, &args->seq_args, &hdr);
2157 encode_putfh(&xdr, args->fh, &hdr);
2158 encode_commit(&xdr, args, &hdr);
2159 encode_getfattr(&xdr, args->bitmask, &hdr);
2167 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2169 struct xdr_stream xdr;
2170 struct compound_hdr hdr = {
2171 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2174 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2175 encode_compound_hdr(&xdr, req, &hdr);
2176 encode_sequence(&xdr, &args->seq_args, &hdr);
2177 encode_putfh(&xdr, args->fh, &hdr);
2178 encode_fsinfo(&xdr, args->bitmask, &hdr);
2184 * a PATHCONF request
2186 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2188 struct xdr_stream xdr;
2189 struct compound_hdr hdr = {
2190 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2193 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2194 encode_compound_hdr(&xdr, req, &hdr);
2195 encode_sequence(&xdr, &args->seq_args, &hdr);
2196 encode_putfh(&xdr, args->fh, &hdr);
2197 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2206 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2208 struct xdr_stream xdr;
2209 struct compound_hdr hdr = {
2210 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2213 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2214 encode_compound_hdr(&xdr, req, &hdr);
2215 encode_sequence(&xdr, &args->seq_args, &hdr);
2216 encode_putfh(&xdr, args->fh, &hdr);
2217 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2218 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2224 * GETATTR_BITMAP request
2226 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2227 struct nfs4_server_caps_arg *args)
2229 struct xdr_stream xdr;
2230 struct compound_hdr hdr = {
2231 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2234 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2235 encode_compound_hdr(&xdr, req, &hdr);
2236 encode_sequence(&xdr, &args->seq_args, &hdr);
2237 encode_putfh(&xdr, args->fhandle, &hdr);
2238 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2239 FATTR4_WORD0_LINK_SUPPORT|
2240 FATTR4_WORD0_SYMLINK_SUPPORT|
2241 FATTR4_WORD0_ACLSUPPORT, &hdr);
2249 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2251 struct xdr_stream xdr;
2252 struct compound_hdr hdr = {
2256 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2257 encode_compound_hdr(&xdr, req, &hdr);
2258 encode_renew(&xdr, clp, &hdr);
2264 * a SETCLIENTID request
2266 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2268 struct xdr_stream xdr;
2269 struct compound_hdr hdr = {
2273 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2274 encode_compound_hdr(&xdr, req, &hdr);
2275 encode_setclientid(&xdr, sc, &hdr);
2281 * a SETCLIENTID_CONFIRM request
2283 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2285 struct xdr_stream xdr;
2286 struct compound_hdr hdr = {
2289 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2291 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2292 encode_compound_hdr(&xdr, req, &hdr);
2293 encode_setclientid_confirm(&xdr, clp, &hdr);
2294 encode_putrootfh(&xdr, &hdr);
2295 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2301 * DELEGRETURN request
2303 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2305 struct xdr_stream xdr;
2306 struct compound_hdr hdr = {
2307 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2310 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2311 encode_compound_hdr(&xdr, req, &hdr);
2312 encode_sequence(&xdr, &args->seq_args, &hdr);
2313 encode_putfh(&xdr, args->fhandle, &hdr);
2314 encode_delegreturn(&xdr, args->stateid, &hdr);
2315 encode_getfattr(&xdr, args->bitmask, &hdr);
2321 * Encode FS_LOCATIONS request
2323 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2325 struct xdr_stream xdr;
2326 struct compound_hdr hdr = {
2327 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2331 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2332 encode_compound_hdr(&xdr, req, &hdr);
2333 encode_sequence(&xdr, &args->seq_args, &hdr);
2334 encode_putfh(&xdr, args->dir_fh, &hdr);
2335 encode_lookup(&xdr, args->name, &hdr);
2336 replen = hdr.replen; /* get the attribute into args->page */
2337 encode_fs_locations(&xdr, args->bitmask, &hdr);
2339 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2345 #if defined(CONFIG_NFS_V4_1)
2347 * EXCHANGE_ID request
2349 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2350 struct nfs41_exchange_id_args *args)
2352 struct xdr_stream xdr;
2353 struct compound_hdr hdr = {
2354 .minorversion = args->client->cl_minorversion,
2357 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2358 encode_compound_hdr(&xdr, req, &hdr);
2359 encode_exchange_id(&xdr, args, &hdr);
2365 * a CREATE_SESSION request
2367 static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
2368 struct nfs41_create_session_args *args)
2370 struct xdr_stream xdr;
2371 struct compound_hdr hdr = {
2372 .minorversion = args->client->cl_minorversion,
2375 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2376 encode_compound_hdr(&xdr, req, &hdr);
2377 encode_create_session(&xdr, args, &hdr);
2383 * a DESTROY_SESSION request
2385 static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
2386 struct nfs4_session *session)
2388 struct xdr_stream xdr;
2389 struct compound_hdr hdr = {
2390 .minorversion = session->clp->cl_minorversion,
2393 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2394 encode_compound_hdr(&xdr, req, &hdr);
2395 encode_destroy_session(&xdr, session, &hdr);
2401 * a SEQUENCE request
2403 static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
2404 struct nfs4_sequence_args *args)
2406 struct xdr_stream xdr;
2407 struct compound_hdr hdr = {
2408 .minorversion = nfs4_xdr_minorversion(args),
2411 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2412 encode_compound_hdr(&xdr, req, &hdr);
2413 encode_sequence(&xdr, args, &hdr);
2419 * a GET_LEASE_TIME request
2421 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2422 struct nfs4_get_lease_time_args *args)
2424 struct xdr_stream xdr;
2425 struct compound_hdr hdr = {
2426 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2428 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2430 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2431 encode_compound_hdr(&xdr, req, &hdr);
2432 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2433 encode_putrootfh(&xdr, &hdr);
2434 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2438 #endif /* CONFIG_NFS_V4_1 */
2441 * START OF "GENERIC" DECODE ROUTINES.
2442 * These may look a little ugly since they are imported from a "generic"
2443 * set of XDR encode/decode routines which are intended to be shared by
2444 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2446 * If the pain of reading these is too great, it should be a straightforward
2447 * task to translate them into Linux-specific versions which are more
2448 * consistent with the style used in NFSv2/v3...
2450 #define READ32(x) (x) = ntohl(*p++)
2451 #define READ64(x) do { \
2452 (x) = (u64)ntohl(*p++) << 32; \
2453 (x) |= ntohl(*p++); \
2455 #define READTIME(x) do { \
2457 (x.tv_sec) = ntohl(*p++); \
2458 (x.tv_nsec) = ntohl(*p++); \
2460 #define COPYMEM(x,nbytes) do { \
2461 memcpy((x), p, nbytes); \
2462 p += XDR_QUADLEN(nbytes); \
2465 #define READ_BUF(nbytes) do { \
2466 p = xdr_inline_decode(xdr, nbytes); \
2467 if (unlikely(!p)) { \
2468 dprintk("nfs: %s: prematurely hit end of receive" \
2469 " buffer\n", __func__); \
2470 dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2471 __func__, xdr->p, nbytes, xdr->end); \
2476 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2483 *string = (char *)p;
2487 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2492 READ32(hdr->status);
2493 READ32(hdr->taglen);
2495 READ_BUF(hdr->taglen + 4);
2496 hdr->tag = (char *)p;
2497 p += XDR_QUADLEN(hdr->taglen);
2499 if (unlikely(hdr->nops < 1))
2500 return nfs4_stat_to_errno(hdr->status);
2504 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2512 if (opnum != expected) {
2513 dprintk("nfs: Server returned operation"
2514 " %d but we issued a request for %d\n",
2519 if (nfserr != NFS_OK)
2520 return nfs4_stat_to_errno(nfserr);
2525 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2528 unsigned int strlen;
2532 return decode_opaque_inline(xdr, &strlen, &str);
2535 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2543 bitmap[0] = bitmap[1] = 0;
2544 READ_BUF((bmlen << 2));
2553 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2563 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2565 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2566 decode_attr_bitmap(xdr, bitmask);
2567 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2569 bitmask[0] = bitmask[1] = 0;
2570 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2574 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2580 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2582 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2585 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2586 dprintk("%s: bad type %d\n", __func__, *type);
2589 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2590 ret = NFS_ATTR_FATTR_TYPE;
2592 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2596 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2602 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2604 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2607 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2608 ret = NFS_ATTR_FATTR_CHANGE;
2610 dprintk("%s: change attribute=%Lu\n", __func__,
2611 (unsigned long long)*change);
2615 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2621 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2623 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2626 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2627 ret = NFS_ATTR_FATTR_SIZE;
2629 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2633 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2638 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2640 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2643 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2645 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2649 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2654 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2656 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2659 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2661 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2665 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2672 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2674 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2676 READ64(fsid->major);
2677 READ64(fsid->minor);
2678 bitmap[0] &= ~FATTR4_WORD0_FSID;
2679 ret = NFS_ATTR_FATTR_FSID;
2681 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2682 (unsigned long long)fsid->major,
2683 (unsigned long long)fsid->minor);
2687 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2692 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2694 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2697 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2699 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2703 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2707 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2708 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2710 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2713 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2715 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2719 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2725 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2727 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2730 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2731 ret = NFS_ATTR_FATTR_FILEID;
2733 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2737 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2743 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2745 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2748 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2749 ret = NFS_ATTR_FATTR_FILEID;
2751 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2755 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2761 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2763 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2766 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2768 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2772 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2778 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2780 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2783 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2785 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2789 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2795 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2797 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2800 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2802 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2806 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2817 path->ncomponents = 0;
2818 while (path->ncomponents < n) {
2819 struct nfs4_string *component = &path->components[path->ncomponents];
2820 status = decode_opaque_inline(xdr, &component->len, &component->data);
2821 if (unlikely(status != 0))
2823 if (path->ncomponents != n)
2825 dprintk("%s", component->data);
2826 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2827 path->ncomponents++;
2829 dprintk("cannot parse %d components in path\n", n);
2837 /* a root pathname is sent as a zero component4 */
2838 path->ncomponents = 1;
2839 path->components[0].len=0;
2840 path->components[0].data=NULL;
2841 dprintk("path /\n");
2844 dprintk(" status %d", status);
2849 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2855 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2858 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2860 dprintk("%s: fsroot ", __func__);
2861 status = decode_pathname(xdr, &res->fs_path);
2862 if (unlikely(status != 0))
2868 res->nlocations = 0;
2869 while (res->nlocations < n) {
2871 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2877 dprintk("%s: servers ", __func__);
2878 while (loc->nservers < m) {
2879 struct nfs4_string *server = &loc->servers[loc->nservers];
2880 status = decode_opaque_inline(xdr, &server->len, &server->data);
2881 if (unlikely(status != 0))
2883 dprintk("%s ", server->data);
2884 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2888 dprintk("%s: using first %u of %u servers "
2889 "returned for location %u\n",
2891 NFS4_FS_LOCATION_MAXSERVERS,
2892 m, res->nlocations);
2893 for (i = loc->nservers; i < m; i++) {
2896 status = decode_opaque_inline(xdr, &len, &data);
2897 if (unlikely(status != 0))
2902 status = decode_pathname(xdr, &loc->rootpath);
2903 if (unlikely(status != 0))
2905 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2908 if (res->nlocations != 0)
2909 status = NFS_ATTR_FATTR_V4_REFERRAL;
2911 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
2918 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2924 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2926 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2929 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2931 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
2935 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2941 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2943 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2946 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2948 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
2952 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2958 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2960 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2963 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2965 dprintk("%s: maxname=%u\n", __func__, *maxname);
2969 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2975 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2977 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2981 if (maxread > 0x7FFFFFFF)
2982 maxread = 0x7FFFFFFF;
2983 *res = (uint32_t)maxread;
2984 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2986 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
2990 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2996 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2998 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3002 if (maxwrite > 0x7FFFFFFF)
3003 maxwrite = 0x7FFFFFFF;
3004 *res = (uint32_t)maxwrite;
3005 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3007 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3011 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3018 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3020 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3023 *mode = tmp & ~S_IFMT;
3024 bitmap[1] &= ~FATTR4_WORD1_MODE;
3025 ret = NFS_ATTR_FATTR_MODE;
3027 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3031 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3037 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3039 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3042 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3043 ret = NFS_ATTR_FATTR_NLINK;
3045 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3049 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
3056 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3058 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3062 if (len < XDR_MAX_NETOBJ) {
3063 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3064 ret = NFS_ATTR_FATTR_OWNER;
3066 dprintk("%s: nfs_map_name_to_uid failed!\n",
3069 dprintk("%s: name too long (%u)!\n",
3071 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3073 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3077 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
3084 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3086 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3090 if (len < XDR_MAX_NETOBJ) {
3091 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3092 ret = NFS_ATTR_FATTR_GROUP;
3094 dprintk("%s: nfs_map_group_to_gid failed!\n",
3097 dprintk("%s: name too long (%u)!\n",
3099 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3101 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3105 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3107 uint32_t major = 0, minor = 0;
3112 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3114 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3120 tmp = MKDEV(major, minor);
3121 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3123 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3124 ret = NFS_ATTR_FATTR_RDEV;
3126 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3130 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3136 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3138 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3141 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3143 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3147 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3153 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3155 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3158 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3160 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3164 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3170 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3172 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3175 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3177 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3181 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3187 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3189 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3192 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3193 ret = NFS_ATTR_FATTR_SPACE_USED;
3195 dprintk("%s: space used=%Lu\n", __func__,
3196 (unsigned long long)*used);
3200 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3209 time->tv_sec = (time_t)sec;
3210 time->tv_nsec = (long)nsec;
3214 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3220 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3222 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3223 status = decode_attr_time(xdr, time);
3225 status = NFS_ATTR_FATTR_ATIME;
3226 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3228 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3232 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3238 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3240 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3241 status = decode_attr_time(xdr, time);
3243 status = NFS_ATTR_FATTR_CTIME;
3244 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3246 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3250 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3256 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3258 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3259 status = decode_attr_time(xdr, time);
3261 status = NFS_ATTR_FATTR_MTIME;
3262 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3264 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3268 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3270 unsigned int attrwords = XDR_QUADLEN(attrlen);
3271 unsigned int nwords = xdr->p - savep;
3273 if (unlikely(attrwords != nwords)) {
3274 dprintk("%s: server returned incorrect attribute length: "
3278 (attrwords < nwords) ? '<' : '>',
3285 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3290 READ32(cinfo->atomic);
3291 READ64(cinfo->before);
3292 READ64(cinfo->after);
3296 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3302 status = decode_op_hdr(xdr, OP_ACCESS);
3308 access->supported = supp;
3309 access->access = acc;
3313 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3318 status = decode_op_hdr(xdr, OP_CLOSE);
3320 nfs_increment_open_seqid(status, res->seqid);
3323 READ_BUF(NFS4_STATEID_SIZE);
3324 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3328 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3333 status = decode_op_hdr(xdr, OP_COMMIT);
3337 COPYMEM(res->verf->verifier, 8);
3341 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3347 status = decode_op_hdr(xdr, OP_CREATE);
3350 if ((status = decode_change_info(xdr, cinfo)))
3354 READ_BUF(bmlen << 2);
3358 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3361 uint32_t attrlen, bitmap[2] = {0};
3364 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3366 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3368 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3370 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3372 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3374 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3376 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3378 status = verify_attr_len(xdr, savep, attrlen);
3380 dprintk("%s: xdr returned %d!\n", __func__, -status);
3384 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3387 uint32_t attrlen, bitmap[2] = {0};
3390 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3392 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3394 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3397 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3399 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3401 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3403 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3405 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3407 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3410 status = verify_attr_len(xdr, savep, attrlen);
3412 dprintk("%s: xdr returned %d!\n", __func__, -status);
3416 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3419 uint32_t attrlen, bitmap[2] = {0};
3422 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3424 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3426 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3429 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3431 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3434 status = verify_attr_len(xdr, savep, attrlen);
3436 dprintk("%s: xdr returned %d!\n", __func__, -status);
3440 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3450 status = decode_op_hdr(xdr, OP_GETATTR);
3454 status = decode_attr_bitmap(xdr, bitmap);
3458 status = decode_attr_length(xdr, &attrlen, &savep);
3463 status = decode_attr_type(xdr, bitmap, &type);
3468 fattr->mode |= nfs_type2fmt[type];
3469 fattr->valid |= status;
3472 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3475 fattr->valid |= status;
3477 status = decode_attr_size(xdr, bitmap, &fattr->size);
3480 fattr->valid |= status;
3482 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3485 fattr->valid |= status;
3487 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3490 fattr->valid |= status;
3492 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3493 struct nfs4_fs_locations,
3497 fattr->valid |= status;
3499 status = decode_attr_mode(xdr, bitmap, &fmode);
3503 fattr->mode |= fmode;
3504 fattr->valid |= status;
3507 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
3510 fattr->valid |= status;
3512 status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid);
3515 fattr->valid |= status;
3517 status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid);
3520 fattr->valid |= status;
3522 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
3525 fattr->valid |= status;
3527 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
3530 fattr->valid |= status;
3532 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
3535 fattr->valid |= status;
3537 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
3540 fattr->valid |= status;
3542 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
3545 fattr->valid |= status;
3547 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
3550 if (status != 0 && !(fattr->valid & status)) {
3551 fattr->fileid = fileid;
3552 fattr->valid |= status;
3555 status = verify_attr_len(xdr, savep, attrlen);
3557 dprintk("%s: xdr returned %d\n", __func__, -status);
3562 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3565 uint32_t attrlen, bitmap[2];
3568 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3570 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3572 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3575 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3577 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3579 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3581 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3583 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3584 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3586 fsinfo->wtpref = fsinfo->wtmax;
3588 status = verify_attr_len(xdr, savep, attrlen);
3590 dprintk("%s: xdr returned %d!\n", __func__, -status);
3594 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3600 /* Zero handle first to allow comparisons */
3601 memset(fh, 0, sizeof(*fh));
3603 status = decode_op_hdr(xdr, OP_GETFH);
3609 if (len > NFS4_FHSIZE)
3613 COPYMEM(fh->data, len);
3617 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3621 status = decode_op_hdr(xdr, OP_LINK);
3624 return decode_change_info(xdr, cinfo);
3628 * We create the owner, so we know a proper owner.id length is 4.
3630 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3632 uint64_t offset, length, clientid;
3634 uint32_t namelen, type;
3641 fl->fl_start = (loff_t)offset;
3642 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3643 if (length == ~(uint64_t)0)
3644 fl->fl_end = OFFSET_MAX;
3645 fl->fl_type = F_WRLCK;
3647 fl->fl_type = F_RDLCK;
3653 return -NFS4ERR_DENIED;
3656 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3661 status = decode_op_hdr(xdr, OP_LOCK);
3665 READ_BUF(NFS4_STATEID_SIZE);
3666 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3667 } else if (status == -NFS4ERR_DENIED)
3668 status = decode_lock_denied(xdr, NULL);
3669 if (res->open_seqid != NULL)
3670 nfs_increment_open_seqid(status, res->open_seqid);
3671 nfs_increment_lock_seqid(status, res->lock_seqid);
3676 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3679 status = decode_op_hdr(xdr, OP_LOCKT);
3680 if (status == -NFS4ERR_DENIED)
3681 return decode_lock_denied(xdr, res->denied);
3685 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3690 status = decode_op_hdr(xdr, OP_LOCKU);
3692 nfs_increment_lock_seqid(status, res->seqid);
3694 READ_BUF(NFS4_STATEID_SIZE);
3695 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3700 static int decode_lookup(struct xdr_stream *xdr)
3702 return decode_op_hdr(xdr, OP_LOOKUP);
3705 /* This is too sick! */
3706 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3709 uint32_t limit_type, nblocks, blocksize;
3713 switch (limit_type) {
3720 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3725 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3728 uint32_t delegation_type;
3731 READ32(delegation_type);
3732 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3733 res->delegation_type = 0;
3736 READ_BUF(NFS4_STATEID_SIZE+4);
3737 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
3738 READ32(res->do_recall);
3740 switch (delegation_type) {
3741 case NFS4_OPEN_DELEGATE_READ:
3742 res->delegation_type = FMODE_READ;
3744 case NFS4_OPEN_DELEGATE_WRITE:
3745 res->delegation_type = FMODE_WRITE|FMODE_READ;
3746 if (decode_space_limit(xdr, &res->maxsize) < 0)
3749 return decode_ace(xdr, NULL, res->server->nfs_client);
3752 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3755 uint32_t savewords, bmlen, i;
3758 status = decode_op_hdr(xdr, OP_OPEN);
3760 nfs_increment_open_seqid(status, res->seqid);
3763 READ_BUF(NFS4_STATEID_SIZE);
3764 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3766 decode_change_info(xdr, &res->cinfo);
3769 READ32(res->rflags);
3774 READ_BUF(bmlen << 2);
3775 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3776 for (i = 0; i < savewords; ++i)
3777 READ32(res->attrset[i]);
3778 for (; i < NFS4_BITMAP_SIZE; i++)
3779 res->attrset[i] = 0;
3781 return decode_delegation(xdr, res);
3783 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
3787 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3792 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3794 nfs_increment_open_seqid(status, res->seqid);
3797 READ_BUF(NFS4_STATEID_SIZE);
3798 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3802 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3807 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3809 nfs_increment_open_seqid(status, res->seqid);
3812 READ_BUF(NFS4_STATEID_SIZE);
3813 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3817 static int decode_putfh(struct xdr_stream *xdr)
3819 return decode_op_hdr(xdr, OP_PUTFH);
3822 static int decode_putrootfh(struct xdr_stream *xdr)
3824 return decode_op_hdr(xdr, OP_PUTROOTFH);
3827 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3829 struct kvec *iov = req->rq_rcv_buf.head;
3831 uint32_t count, eof, recvd, hdrlen;
3834 status = decode_op_hdr(xdr, OP_READ);
3840 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3841 recvd = req->rq_rcv_buf.len - hdrlen;
3842 if (count > recvd) {
3843 dprintk("NFS: server cheating in read reply: "
3844 "count %u > recvd %u\n", count, recvd);
3848 xdr_read_pages(xdr, count);
3854 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3856 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3857 struct page *page = *rcvbuf->pages;
3858 struct kvec *iov = rcvbuf->head;
3860 u32 recvd, pglen = rcvbuf->page_len;
3861 __be32 *end, *entry, *p, *kaddr;
3862 unsigned int nr = 0;
3865 status = decode_op_hdr(xdr, OP_READDIR);
3869 COPYMEM(readdir->verifier.data, 8);
3870 dprintk("%s: verifier = %08x:%08x\n",
3872 ((u32 *)readdir->verifier.data)[0],
3873 ((u32 *)readdir->verifier.data)[1]);
3876 hdrlen = (char *) p - (char *) iov->iov_base;
3877 recvd = rcvbuf->len - hdrlen;
3880 xdr_read_pages(xdr, pglen);
3882 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3883 kaddr = p = kmap_atomic(page, KM_USER0);
3884 end = p + ((pglen + readdir->pgbase) >> 2);
3887 /* Make sure the packet actually has a value_follows and EOF entry */
3888 if ((entry + 1) > end)
3891 for (; *p++; nr++) {
3892 u32 len, attrlen, xlen;
3895 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3896 p += 2; /* cookie */
3897 len = ntohl(*p++); /* filename length */
3898 if (len > NFS4_MAXNAMLEN) {
3899 dprintk("NFS: giant filename in readdir (len 0x%x)\n",
3903 xlen = XDR_QUADLEN(len);
3904 if (end - p < xlen + 1)
3906 dprintk("filename = %*s\n", len, (char *)p);
3908 len = ntohl(*p++); /* bitmap length */
3909 if (end - p < len + 1)
3912 attrlen = XDR_QUADLEN(ntohl(*p++));
3913 if (end - p < attrlen + 2)
3915 p += attrlen; /* attributes */
3919 * Apparently some server sends responses that are a valid size, but
3920 * contain no entries, and have value_follows==0 and EOF==0. For
3921 * those, just set the EOF marker.
3923 if (!nr && entry[1] == 0) {
3924 dprintk("NFS: readdir reply truncated!\n");
3928 kunmap_atomic(kaddr, KM_USER0);
3932 * When we get a short packet there are 2 possibilities. We can
3933 * return an error, or fix up the response to look like a valid
3934 * response and return what we have so far. If there are no
3935 * entries and the packet was short, then return -EIO. If there
3936 * are valid entries in the response, return them and pretend that
3937 * the call was successful, but incomplete. The caller can retry the
3938 * readdir starting at the last cookie.
3940 dprintk("%s: short packet at entry %d\n", __func__, nr);
3941 entry[0] = entry[1] = 0;
3945 kunmap_atomic(kaddr, KM_USER0);
3946 return -errno_NFSERR_IO;
3949 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3951 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3952 struct kvec *iov = rcvbuf->head;
3959 status = decode_op_hdr(xdr, OP_READLINK);
3963 /* Convert length of symlink */
3966 if (len >= rcvbuf->page_len || len <= 0) {
3967 dprintk("nfs: server returned giant symlink!\n");
3968 return -ENAMETOOLONG;
3970 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3971 recvd = req->rq_rcv_buf.len - hdrlen;
3973 dprintk("NFS: server cheating in readlink reply: "
3974 "count %u > recvd %u\n", len, recvd);
3977 xdr_read_pages(xdr, len);
3979 * The XDR encode routine has set things up so that
3980 * the link text will be copied directly into the
3981 * buffer. We just have to do overflow-checking,
3982 * and and null-terminate the text (the VFS expects
3983 * null-termination).
3985 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3986 kaddr[len+rcvbuf->page_base] = '\0';
3987 kunmap_atomic(kaddr, KM_USER0);
3991 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3995 status = decode_op_hdr(xdr, OP_REMOVE);
3998 status = decode_change_info(xdr, cinfo);
4003 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4004 struct nfs4_change_info *new_cinfo)
4008 status = decode_op_hdr(xdr, OP_RENAME);
4011 if ((status = decode_change_info(xdr, old_cinfo)))
4013 status = decode_change_info(xdr, new_cinfo);
4018 static int decode_renew(struct xdr_stream *xdr)
4020 return decode_op_hdr(xdr, OP_RENEW);
4024 decode_restorefh(struct xdr_stream *xdr)
4026 return decode_op_hdr(xdr, OP_RESTOREFH);
4029 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4035 struct kvec *iov = req->rq_rcv_buf.head;
4039 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4041 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4043 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4046 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4048 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4052 /* We ignore &savep and don't do consistency checks on
4053 * the attr length. Let userspace figure it out.... */
4054 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4055 recvd = req->rq_rcv_buf.len - hdrlen;
4056 if (attrlen > recvd) {
4057 dprintk("NFS: server cheating in getattr"
4058 " acl reply: attrlen %u > recvd %u\n",
4062 xdr_read_pages(xdr, attrlen);
4065 status = -EOPNOTSUPP;
4072 decode_savefh(struct xdr_stream *xdr)
4074 return decode_op_hdr(xdr, OP_SAVEFH);
4077 static int decode_setattr(struct xdr_stream *xdr)
4083 status = decode_op_hdr(xdr, OP_SETATTR);
4088 READ_BUF(bmlen << 2);
4092 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
4100 if (opnum != OP_SETCLIENTID) {
4101 dprintk("nfs: decode_setclientid: Server returned operation"
4106 if (nfserr == NFS_OK) {
4107 READ_BUF(8 + NFS4_VERIFIER_SIZE);
4108 READ64(clp->cl_clientid);
4109 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
4110 } else if (nfserr == NFSERR_CLID_INUSE) {
4113 /* skip netid string */
4118 /* skip uaddr string */
4122 return -NFSERR_CLID_INUSE;
4124 return nfs4_stat_to_errno(nfserr);
4129 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4131 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4134 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4139 status = decode_op_hdr(xdr, OP_WRITE);
4145 READ32(res->verf->committed);
4146 COPYMEM(res->verf->verifier, 8);
4150 static int decode_delegreturn(struct xdr_stream *xdr)
4152 return decode_op_hdr(xdr, OP_DELEGRETURN);
4155 #if defined(CONFIG_NFS_V4_1)
4156 static int decode_exchange_id(struct xdr_stream *xdr,
4157 struct nfs41_exchange_id_res *res)
4162 struct nfs_client *clp = res->client;
4164 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4169 READ64(clp->cl_ex_clid);
4171 READ32(clp->cl_seqid);
4172 READ32(clp->cl_exchange_flags);
4174 /* We ask for SP4_NONE */
4176 if (dummy != SP4_NONE)
4179 /* Throw away minor_id */
4182 /* Throw away Major id */
4187 /* Throw away server_scope */
4192 /* Throw away Implementation id array */
4200 static int decode_chan_attrs(struct xdr_stream *xdr,
4201 struct nfs4_channel_attrs *attrs)
4207 READ32(attrs->headerpadsz);
4208 READ32(attrs->max_rqst_sz);
4209 READ32(attrs->max_resp_sz);
4210 READ32(attrs->max_resp_sz_cached);
4211 READ32(attrs->max_ops);
4212 READ32(attrs->max_reqs);
4214 if (unlikely(nr_attrs > 1)) {
4215 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4216 __func__, nr_attrs);
4220 READ_BUF(4); /* skip rdma_attrs */
4224 static int decode_create_session(struct xdr_stream *xdr,
4225 struct nfs41_create_session_res *res)
4229 struct nfs_client *clp = res->client;
4230 struct nfs4_session *session = clp->cl_session;
4232 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
4238 READ_BUF(NFS4_MAX_SESSIONID_LEN);
4239 COPYMEM(&session->sess_id, NFS4_MAX_SESSIONID_LEN);
4243 READ32(clp->cl_seqid);
4244 READ32(session->flags);
4246 /* Channel attributes */
4247 status = decode_chan_attrs(xdr, &session->fc_attrs);
4249 status = decode_chan_attrs(xdr, &session->bc_attrs);
4253 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4255 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4257 #endif /* CONFIG_NFS_V4_1 */
4259 static int decode_sequence(struct xdr_stream *xdr,
4260 struct nfs4_sequence_res *res,
4261 struct rpc_rqst *rqstp)
4263 #if defined(CONFIG_NFS_V4_1)
4264 struct nfs4_slot *slot;
4265 struct nfs4_sessionid id;
4270 if (!res->sr_session)
4273 status = decode_op_hdr(xdr, OP_SEQUENCE);
4278 * If the server returns different values for sessionID, slotID or
4279 * sequence number, the server is looney tunes.
4281 status = -ESERVERFAULT;
4283 slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid];
4284 READ_BUF(NFS4_MAX_SESSIONID_LEN + 20);
4285 COPYMEM(id.data, NFS4_MAX_SESSIONID_LEN);
4286 if (memcmp(id.data, res->sr_session->sess_id.data,
4287 NFS4_MAX_SESSIONID_LEN)) {
4288 dprintk("%s Invalid session id\n", __func__);
4293 if (dummy != slot->seq_nr) {
4294 dprintk("%s Invalid sequence number\n", __func__);
4299 if (dummy != res->sr_slotid) {
4300 dprintk("%s Invalid slot id\n", __func__);
4303 /* highest slot id - currently not processed */
4305 /* target highest slot id - currently not processed */
4307 /* result flags - currently not processed */
4311 res->sr_status = status;
4313 #else /* CONFIG_NFS_V4_1 */
4315 #endif /* CONFIG_NFS_V4_1 */
4319 * END OF "GENERIC" DECODE ROUTINES.
4323 * Decode OPEN_DOWNGRADE response
4325 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4327 struct xdr_stream xdr;
4328 struct compound_hdr hdr;
4331 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4332 status = decode_compound_hdr(&xdr, &hdr);
4335 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4338 status = decode_putfh(&xdr);
4341 status = decode_open_downgrade(&xdr, res);
4344 decode_getfattr(&xdr, res->fattr, res->server);
4350 * Decode ACCESS response
4352 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
4354 struct xdr_stream xdr;
4355 struct compound_hdr hdr;
4358 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4359 status = decode_compound_hdr(&xdr, &hdr);
4362 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4365 status = decode_putfh(&xdr);
4368 status = decode_access(&xdr, res);
4371 decode_getfattr(&xdr, res->fattr, res->server);
4377 * Decode LOOKUP response
4379 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4381 struct xdr_stream xdr;
4382 struct compound_hdr hdr;
4385 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4386 status = decode_compound_hdr(&xdr, &hdr);
4389 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4392 if ((status = decode_putfh(&xdr)) != 0)
4394 if ((status = decode_lookup(&xdr)) != 0)
4396 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4398 status = decode_getfattr(&xdr, res->fattr, res->server);
4404 * Decode LOOKUP_ROOT response
4406 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
4408 struct xdr_stream xdr;
4409 struct compound_hdr hdr;
4412 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4413 status = decode_compound_hdr(&xdr, &hdr);
4416 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4419 if ((status = decode_putrootfh(&xdr)) != 0)
4421 if ((status = decode_getfh(&xdr, res->fh)) == 0)
4422 status = decode_getfattr(&xdr, res->fattr, res->server);
4428 * Decode REMOVE response
4430 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *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_putfh(&xdr)) != 0)
4445 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
4447 decode_getfattr(&xdr, &res->dir_attr, res->server);
4453 * Decode RENAME response
4455 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
4457 struct xdr_stream xdr;
4458 struct compound_hdr hdr;
4461 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4462 status = decode_compound_hdr(&xdr, &hdr);
4465 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4468 if ((status = decode_putfh(&xdr)) != 0)
4470 if ((status = decode_savefh(&xdr)) != 0)
4472 if ((status = decode_putfh(&xdr)) != 0)
4474 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4476 /* Current FH is target directory */
4477 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
4479 if ((status = decode_restorefh(&xdr)) != 0)
4481 decode_getfattr(&xdr, res->old_fattr, res->server);
4487 * Decode LINK response
4489 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4491 struct xdr_stream xdr;
4492 struct compound_hdr hdr;
4495 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4496 status = decode_compound_hdr(&xdr, &hdr);
4499 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4502 if ((status = decode_putfh(&xdr)) != 0)
4504 if ((status = decode_savefh(&xdr)) != 0)
4506 if ((status = decode_putfh(&xdr)) != 0)
4508 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4511 * Note order: OP_LINK leaves the directory as the current
4514 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
4516 if ((status = decode_restorefh(&xdr)) != 0)
4518 decode_getfattr(&xdr, res->fattr, res->server);
4524 * Decode CREATE response
4526 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4528 struct xdr_stream xdr;
4529 struct compound_hdr hdr;
4532 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4533 status = decode_compound_hdr(&xdr, &hdr);
4536 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4539 if ((status = decode_putfh(&xdr)) != 0)
4541 if ((status = decode_savefh(&xdr)) != 0)
4543 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4545 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4547 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
4549 if ((status = decode_restorefh(&xdr)) != 0)
4551 decode_getfattr(&xdr, res->dir_fattr, res->server);
4557 * Decode SYMLINK response
4559 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4561 return nfs4_xdr_dec_create(rqstp, p, res);
4565 * Decode GETATTR response
4567 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
4569 struct xdr_stream xdr;
4570 struct compound_hdr hdr;
4573 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4574 status = decode_compound_hdr(&xdr, &hdr);
4577 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4580 status = decode_putfh(&xdr);
4583 status = decode_getfattr(&xdr, res->fattr, res->server);
4589 * Encode an SETACL request
4592 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
4594 struct xdr_stream xdr;
4595 struct compound_hdr hdr = {
4596 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
4600 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
4601 encode_compound_hdr(&xdr, req, &hdr);
4602 encode_sequence(&xdr, &args->seq_args, &hdr);
4603 encode_putfh(&xdr, args->fh, &hdr);
4604 status = encode_setacl(&xdr, args, &hdr);
4610 * Decode SETACL response
4613 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
4614 struct nfs_setaclres *res)
4616 struct xdr_stream xdr;
4617 struct compound_hdr hdr;
4620 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4621 status = decode_compound_hdr(&xdr, &hdr);
4624 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4627 status = decode_putfh(&xdr);
4630 status = decode_setattr(&xdr);
4636 * Decode GETACL response
4639 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
4640 struct nfs_getaclres *res)
4642 struct xdr_stream xdr;
4643 struct compound_hdr hdr;
4646 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4647 status = decode_compound_hdr(&xdr, &hdr);
4650 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4653 status = decode_putfh(&xdr);
4656 status = decode_getacl(&xdr, rqstp, &res->acl_len);
4663 * Decode CLOSE response
4665 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4667 struct xdr_stream xdr;
4668 struct compound_hdr hdr;
4671 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4672 status = decode_compound_hdr(&xdr, &hdr);
4675 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4678 status = decode_putfh(&xdr);
4681 status = decode_close(&xdr, res);
4685 * Note: Server may do delete on close for this file
4686 * in which case the getattr call will fail with
4687 * an ESTALE error. Shouldn't be a problem,
4688 * though, since fattr->valid will remain unset.
4690 decode_getfattr(&xdr, res->fattr, res->server);
4696 * Decode OPEN response
4698 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4700 struct xdr_stream xdr;
4701 struct compound_hdr hdr;
4704 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4705 status = decode_compound_hdr(&xdr, &hdr);
4708 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4711 status = decode_putfh(&xdr);
4714 status = decode_savefh(&xdr);
4717 status = decode_open(&xdr, res);
4720 if (decode_getfh(&xdr, &res->fh) != 0)
4722 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4724 if (decode_restorefh(&xdr) != 0)
4726 decode_getfattr(&xdr, res->dir_attr, res->server);
4732 * Decode OPEN_CONFIRM response
4734 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
4736 struct xdr_stream xdr;
4737 struct compound_hdr hdr;
4740 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4741 status = decode_compound_hdr(&xdr, &hdr);
4744 status = decode_putfh(&xdr);
4747 status = decode_open_confirm(&xdr, res);
4753 * Decode OPEN response
4755 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4757 struct xdr_stream xdr;
4758 struct compound_hdr hdr;
4761 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4762 status = decode_compound_hdr(&xdr, &hdr);
4765 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4768 status = decode_putfh(&xdr);
4771 status = decode_open(&xdr, res);
4774 decode_getfattr(&xdr, res->f_attr, res->server);
4780 * Decode SETATTR response
4782 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4784 struct xdr_stream xdr;
4785 struct compound_hdr hdr;
4788 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4789 status = decode_compound_hdr(&xdr, &hdr);
4792 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4795 status = decode_putfh(&xdr);
4798 status = decode_setattr(&xdr);
4801 decode_getfattr(&xdr, res->fattr, res->server);
4807 * Decode LOCK response
4809 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4811 struct xdr_stream xdr;
4812 struct compound_hdr hdr;
4815 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4816 status = decode_compound_hdr(&xdr, &hdr);
4819 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4822 status = decode_putfh(&xdr);
4825 status = decode_lock(&xdr, res);
4831 * Decode LOCKT response
4833 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_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_lockt(&xdr, res);
4855 * Decode LOCKU response
4857 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_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_locku(&xdr, res);
4879 * Decode READLINK response
4881 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
4882 struct nfs4_readlink_res *res)
4884 struct xdr_stream xdr;
4885 struct compound_hdr hdr;
4888 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4889 status = decode_compound_hdr(&xdr, &hdr);
4892 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4895 status = decode_putfh(&xdr);
4898 status = decode_readlink(&xdr, rqstp);
4904 * Decode READDIR response
4906 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_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_readdir(&xdr, rqstp, res);
4928 * Decode Read response
4930 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *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_read(&xdr, rqstp, res);
4948 status = res->count;
4954 * Decode WRITE response
4956 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4958 struct xdr_stream xdr;
4959 struct compound_hdr hdr;
4962 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4963 status = decode_compound_hdr(&xdr, &hdr);
4966 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4969 status = decode_putfh(&xdr);
4972 status = decode_write(&xdr, res);
4975 decode_getfattr(&xdr, res->fattr, res->server);
4977 status = res->count;
4983 * Decode COMMIT response
4985 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4987 struct xdr_stream xdr;
4988 struct compound_hdr hdr;
4991 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4992 status = decode_compound_hdr(&xdr, &hdr);
4995 status = decode_sequence(&xdr, &res->seq_res, rqstp);
4998 status = decode_putfh(&xdr);
5001 status = decode_commit(&xdr, res);
5004 decode_getfattr(&xdr, res->fattr, res->server);
5012 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5013 struct nfs4_fsinfo_res *res)
5015 struct xdr_stream xdr;
5016 struct compound_hdr hdr;
5019 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5020 status = decode_compound_hdr(&xdr, &hdr);
5022 status = decode_sequence(&xdr, &res->seq_res, req);
5024 status = decode_putfh(&xdr);
5026 status = decode_fsinfo(&xdr, res->fsinfo);
5033 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5034 struct nfs4_pathconf_res *res)
5036 struct xdr_stream xdr;
5037 struct compound_hdr hdr;
5040 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5041 status = decode_compound_hdr(&xdr, &hdr);
5043 status = decode_sequence(&xdr, &res->seq_res, req);
5045 status = decode_putfh(&xdr);
5047 status = decode_pathconf(&xdr, res->pathconf);
5054 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5055 struct nfs4_statfs_res *res)
5057 struct xdr_stream xdr;
5058 struct compound_hdr hdr;
5061 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5062 status = decode_compound_hdr(&xdr, &hdr);
5064 status = decode_sequence(&xdr, &res->seq_res, req);
5066 status = decode_putfh(&xdr);
5068 status = decode_statfs(&xdr, res->fsstat);
5073 * GETATTR_BITMAP request
5075 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
5077 struct xdr_stream xdr;
5078 struct compound_hdr hdr;
5081 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5082 status = decode_compound_hdr(&xdr, &hdr);
5085 status = decode_sequence(&xdr, &res->seq_res, req);
5088 if ((status = decode_putfh(&xdr)) != 0)
5090 status = decode_server_caps(&xdr, res);
5096 * Decode RENEW response
5098 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5100 struct xdr_stream xdr;
5101 struct compound_hdr hdr;
5104 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5105 status = decode_compound_hdr(&xdr, &hdr);
5107 status = decode_renew(&xdr);
5112 * a SETCLIENTID request
5114 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
5115 struct nfs_client *clp)
5117 struct xdr_stream xdr;
5118 struct compound_hdr hdr;
5121 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5122 status = decode_compound_hdr(&xdr, &hdr);
5124 status = decode_setclientid(&xdr, clp);
5129 * a SETCLIENTID_CONFIRM request
5131 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
5133 struct xdr_stream xdr;
5134 struct compound_hdr hdr;
5137 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5138 status = decode_compound_hdr(&xdr, &hdr);
5140 status = decode_setclientid_confirm(&xdr);
5142 status = decode_putrootfh(&xdr);
5144 status = decode_fsinfo(&xdr, fsinfo);
5149 * DELEGRETURN request
5151 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
5153 struct xdr_stream xdr;
5154 struct compound_hdr hdr;
5157 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5158 status = decode_compound_hdr(&xdr, &hdr);
5161 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5164 status = decode_putfh(&xdr);
5167 status = decode_delegreturn(&xdr);
5168 decode_getfattr(&xdr, res->fattr, res->server);
5174 * FS_LOCATIONS request
5176 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5177 struct nfs4_fs_locations_res *res)
5179 struct xdr_stream xdr;
5180 struct compound_hdr hdr;
5183 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5184 status = decode_compound_hdr(&xdr, &hdr);
5187 status = decode_sequence(&xdr, &res->seq_res, req);
5190 if ((status = decode_putfh(&xdr)) != 0)
5192 if ((status = decode_lookup(&xdr)) != 0)
5194 xdr_enter_page(&xdr, PAGE_SIZE);
5195 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
5196 res->fs_locations->server);
5201 #if defined(CONFIG_NFS_V4_1)
5203 * EXCHANGE_ID request
5205 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
5208 struct xdr_stream xdr;
5209 struct compound_hdr hdr;
5212 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5213 status = decode_compound_hdr(&xdr, &hdr);
5215 status = decode_exchange_id(&xdr, res);
5220 * a CREATE_SESSION request
5222 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
5223 struct nfs41_create_session_res *res)
5225 struct xdr_stream xdr;
5226 struct compound_hdr hdr;
5229 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5230 status = decode_compound_hdr(&xdr, &hdr);
5232 status = decode_create_session(&xdr, res);
5237 * a DESTROY_SESSION request
5239 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
5242 struct xdr_stream xdr;
5243 struct compound_hdr hdr;
5246 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5247 status = decode_compound_hdr(&xdr, &hdr);
5249 status = decode_destroy_session(&xdr, dummy);
5254 * a SEQUENCE request
5256 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
5257 struct nfs4_sequence_res *res)
5259 struct xdr_stream xdr;
5260 struct compound_hdr hdr;
5263 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5264 status = decode_compound_hdr(&xdr, &hdr);
5266 status = decode_sequence(&xdr, res, rqstp);
5271 * a GET_LEASE_TIME request
5273 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
5274 struct nfs4_get_lease_time_res *res)
5276 struct xdr_stream xdr;
5277 struct compound_hdr hdr;
5280 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5281 status = decode_compound_hdr(&xdr, &hdr);
5283 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
5285 status = decode_putrootfh(&xdr);
5287 status = decode_fsinfo(&xdr, res->lr_fsinfo);
5290 #endif /* CONFIG_NFS_V4_1 */
5292 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
5294 uint32_t bitmap[2] = {0};
5299 return ERR_PTR(-EAGAIN);
5301 return ERR_PTR(-EBADCOOKIE);
5304 entry->prev_cookie = entry->cookie;
5305 p = xdr_decode_hyper(p, &entry->cookie);
5306 entry->len = ntohl(*p++);
5307 entry->name = (const char *) p;
5308 p += XDR_QUADLEN(entry->len);
5311 * In case the server doesn't return an inode number,
5312 * we fake one here. (We don't use inode number 0,
5313 * since glibc seems to choke on it...)
5317 len = ntohl(*p++); /* bitmap length */
5319 bitmap[0] = ntohl(*p++);
5321 bitmap[1] = ntohl(*p++);
5325 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
5327 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
5328 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
5329 /* Ignore the return value of rdattr_error for now */
5333 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
5334 xdr_decode_hyper(p, &entry->ino);
5335 else if (bitmap[0] == FATTR4_WORD0_FILEID)
5336 xdr_decode_hyper(p, &entry->ino);
5340 entry->eof = !p[0] && p[1];
5345 * We need to translate between nfs status return values and
5346 * the local errno values which may not be the same.
5353 { NFS4ERR_PERM, -EPERM },
5354 { NFS4ERR_NOENT, -ENOENT },
5355 { NFS4ERR_IO, -errno_NFSERR_IO},
5356 { NFS4ERR_NXIO, -ENXIO },
5357 { NFS4ERR_ACCESS, -EACCES },
5358 { NFS4ERR_EXIST, -EEXIST },
5359 { NFS4ERR_XDEV, -EXDEV },
5360 { NFS4ERR_NOTDIR, -ENOTDIR },
5361 { NFS4ERR_ISDIR, -EISDIR },
5362 { NFS4ERR_INVAL, -EINVAL },
5363 { NFS4ERR_FBIG, -EFBIG },
5364 { NFS4ERR_NOSPC, -ENOSPC },
5365 { NFS4ERR_ROFS, -EROFS },
5366 { NFS4ERR_MLINK, -EMLINK },
5367 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
5368 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
5369 { NFS4ERR_DQUOT, -EDQUOT },
5370 { NFS4ERR_STALE, -ESTALE },
5371 { NFS4ERR_BADHANDLE, -EBADHANDLE },
5372 { NFS4ERR_BADOWNER, -EINVAL },
5373 { NFS4ERR_BADNAME, -EINVAL },
5374 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
5375 { NFS4ERR_NOTSUPP, -ENOTSUPP },
5376 { NFS4ERR_TOOSMALL, -ETOOSMALL },
5377 { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
5378 { NFS4ERR_BADTYPE, -EBADTYPE },
5379 { NFS4ERR_LOCKED, -EAGAIN },
5380 { NFS4ERR_RESOURCE, -EREMOTEIO },
5381 { NFS4ERR_SYMLINK, -ELOOP },
5382 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
5383 { NFS4ERR_DEADLOCK, -EDEADLK },
5384 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
5385 * to be handled by a
5392 * Convert an NFS error code to a local one.
5393 * This one is used jointly by NFSv2 and NFSv3.
5396 nfs4_stat_to_errno(int stat)
5399 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
5400 if (nfs_errtbl[i].stat == stat)
5401 return nfs_errtbl[i].errno;
5403 if (stat <= 10000 || stat > 10100) {
5404 /* The server is looney tunes. */
5405 return -ESERVERFAULT;
5407 /* If we cannot translate the error, the recovery routines should
5409 * Note: remaining NFSv4 error codes have values > 10000, so should
5410 * not conflict with native Linux error codes.
5415 #define PROC(proc, argtype, restype) \
5416 [NFSPROC4_CLNT_##proc] = { \
5417 .p_proc = NFSPROC4_COMPOUND, \
5418 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
5419 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
5420 .p_arglen = NFS4_##argtype##_sz, \
5421 .p_replen = NFS4_##restype##_sz, \
5422 .p_statidx = NFSPROC4_CLNT_##proc, \
5426 struct rpc_procinfo nfs4_procedures[] = {
5427 PROC(READ, enc_read, dec_read),
5428 PROC(WRITE, enc_write, dec_write),
5429 PROC(COMMIT, enc_commit, dec_commit),
5430 PROC(OPEN, enc_open, dec_open),
5431 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
5432 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
5433 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
5434 PROC(CLOSE, enc_close, dec_close),
5435 PROC(SETATTR, enc_setattr, dec_setattr),
5436 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
5437 PROC(RENEW, enc_renew, dec_renew),
5438 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
5439 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
5440 PROC(LOCK, enc_lock, dec_lock),
5441 PROC(LOCKT, enc_lockt, dec_lockt),
5442 PROC(LOCKU, enc_locku, dec_locku),
5443 PROC(ACCESS, enc_access, dec_access),
5444 PROC(GETATTR, enc_getattr, dec_getattr),
5445 PROC(LOOKUP, enc_lookup, dec_lookup),
5446 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
5447 PROC(REMOVE, enc_remove, dec_remove),
5448 PROC(RENAME, enc_rename, dec_rename),
5449 PROC(LINK, enc_link, dec_link),
5450 PROC(SYMLINK, enc_symlink, dec_symlink),
5451 PROC(CREATE, enc_create, dec_create),
5452 PROC(PATHCONF, enc_pathconf, dec_pathconf),
5453 PROC(STATFS, enc_statfs, dec_statfs),
5454 PROC(READLINK, enc_readlink, dec_readlink),
5455 PROC(READDIR, enc_readdir, dec_readdir),
5456 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
5457 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
5458 PROC(GETACL, enc_getacl, dec_getacl),
5459 PROC(SETACL, enc_setacl, dec_setacl),
5460 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
5461 #if defined(CONFIG_NFS_V4_1)
5462 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
5463 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
5464 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
5465 PROC(SEQUENCE, enc_sequence, dec_sequence),
5466 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
5467 #endif /* CONFIG_NFS_V4_1 */
5470 struct rpc_version nfs_version4 = {
5472 .nrprocs = ARRAY_SIZE(nfs4_procedures),
5473 .procs = nfs4_procedures