4 * Client-side XDR for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 #include <linux/param.h>
39 #include <linux/time.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
44 #include <linux/pagemap.h>
45 #include <linux/proc_fs.h>
46 #include <linux/kdev_t.h>
47 #include <linux/sunrpc/clnt.h>
48 #include <linux/sunrpc/msg_prot.h>
49 #include <linux/sunrpc/gss_api.h>
50 #include <linux/nfs.h>
51 #include <linux/nfs4.h>
52 #include <linux/nfs_fs.h>
53 #include <linux/nfs_idmap.h>
58 #define NFSDBG_FACILITY NFSDBG_XDR
60 /* Mapping from NFS error code to "errno" error code. */
61 #define errno_NFSERR_IO EIO
63 static int nfs4_stat_to_errno(int);
65 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
67 #define NFS4_MAXTAGLEN 20
69 #define NFS4_MAXTAGLEN 0
72 /* lock,open owner id:
73 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
75 #define open_owner_id_maxsz (1 + 1 + 4)
76 #define lock_owner_id_maxsz (1 + 1 + 4)
77 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
78 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
79 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
80 #define op_encode_hdr_maxsz (1)
81 #define op_decode_hdr_maxsz (2)
82 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
83 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
84 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
85 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
86 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
88 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
89 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
90 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
91 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
92 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
93 ((3+NFS4_FHSIZE) >> 2))
94 #define nfs4_fattr_bitmap_maxsz 3
95 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
96 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
97 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
98 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
99 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
100 /* This is based on getfattr, which uses the most attributes: */
101 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
102 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
103 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
104 nfs4_fattr_value_maxsz)
105 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
106 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
111 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
112 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
113 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
114 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
115 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
116 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 15)
117 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
118 #define decode_renew_maxsz (op_decode_hdr_maxsz)
119 #define encode_setclientid_maxsz \
120 (op_encode_hdr_maxsz + \
121 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
122 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
124 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
125 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
127 #define decode_setclientid_maxsz \
128 (op_decode_hdr_maxsz + \
130 1024) /* large value for CLID_INUSE */
131 #define encode_setclientid_confirm_maxsz \
132 (op_encode_hdr_maxsz + \
133 3 + (NFS4_VERIFIER_SIZE >> 2))
134 #define decode_setclientid_confirm_maxsz \
135 (op_decode_hdr_maxsz)
136 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
137 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
138 #define encode_share_access_maxsz \
140 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
141 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
142 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
143 #define encode_open_maxsz (op_encode_hdr_maxsz + \
144 2 + encode_share_access_maxsz + 2 + \
145 open_owner_id_maxsz + \
146 encode_opentype_maxsz + \
147 encode_claim_null_maxsz)
148 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
149 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
151 #define decode_change_info_maxsz (5)
152 #define decode_open_maxsz (op_decode_hdr_maxsz + \
153 decode_stateid_maxsz + \
154 decode_change_info_maxsz + 1 + \
155 nfs4_fattr_bitmap_maxsz + \
156 decode_delegation_maxsz)
157 #define encode_open_confirm_maxsz \
158 (op_encode_hdr_maxsz + \
159 encode_stateid_maxsz + 1)
160 #define decode_open_confirm_maxsz \
161 (op_decode_hdr_maxsz + \
162 decode_stateid_maxsz)
163 #define encode_open_downgrade_maxsz \
164 (op_encode_hdr_maxsz + \
165 encode_stateid_maxsz + 1 + \
166 encode_share_access_maxsz)
167 #define decode_open_downgrade_maxsz \
168 (op_decode_hdr_maxsz + \
169 decode_stateid_maxsz)
170 #define encode_close_maxsz (op_encode_hdr_maxsz + \
171 1 + encode_stateid_maxsz)
172 #define decode_close_maxsz (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz)
174 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
175 encode_stateid_maxsz + \
177 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
178 nfs4_fattr_bitmap_maxsz)
179 #define encode_read_maxsz (op_encode_hdr_maxsz + \
180 encode_stateid_maxsz + 3)
181 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
182 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
183 2 + encode_verifier_maxsz + 5)
184 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
185 decode_verifier_maxsz)
186 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
187 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
188 #define encode_write_maxsz (op_encode_hdr_maxsz + \
189 encode_stateid_maxsz + 4)
190 #define decode_write_maxsz (op_decode_hdr_maxsz + \
191 2 + decode_verifier_maxsz)
192 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
193 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
194 decode_verifier_maxsz)
195 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
197 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
198 decode_change_info_maxsz)
199 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
201 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
202 decode_change_info_maxsz + \
203 decode_change_info_maxsz)
204 #define encode_link_maxsz (op_encode_hdr_maxsz + \
206 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
207 #define encode_lockowner_maxsz (7)
208 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
210 1 + encode_stateid_maxsz + 1 + \
211 encode_lockowner_maxsz)
212 #define decode_lock_denied_maxsz \
213 (8 + decode_lockowner_maxsz)
214 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
215 decode_lock_denied_maxsz)
216 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
217 encode_lockowner_maxsz)
218 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
219 decode_lock_denied_maxsz)
220 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
221 encode_stateid_maxsz + \
223 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
224 decode_stateid_maxsz)
225 #define encode_release_lockowner_maxsz \
226 (op_encode_hdr_maxsz + \
227 encode_lockowner_maxsz)
228 #define decode_release_lockowner_maxsz \
229 (op_decode_hdr_maxsz)
230 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
231 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
232 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
233 1 + nfs4_name_maxsz + \
236 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
237 #define encode_create_maxsz (op_encode_hdr_maxsz + \
238 1 + 2 + nfs4_name_maxsz + \
240 #define decode_create_maxsz (op_decode_hdr_maxsz + \
241 decode_change_info_maxsz + \
242 nfs4_fattr_bitmap_maxsz)
243 #define encode_statfs_maxsz (encode_getattr_maxsz)
244 #define decode_statfs_maxsz (decode_getattr_maxsz)
245 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
246 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
247 #define encode_getacl_maxsz (encode_getattr_maxsz)
248 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
249 nfs4_fattr_bitmap_maxsz + 1)
250 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
251 encode_stateid_maxsz + 3)
252 #define decode_setacl_maxsz (decode_setattr_maxsz)
253 #define encode_fs_locations_maxsz \
254 (encode_getattr_maxsz)
255 #define decode_fs_locations_maxsz \
257 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
258 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 4 + (NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)))
260 #if defined(CONFIG_NFS_V4_1)
261 #define NFS4_MAX_MACHINE_NAME_LEN (64)
263 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
264 encode_verifier_maxsz + \
265 1 /* co_ownerid.len */ + \
266 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
269 0 /* SP4_NONE (for now) */ + \
270 1 /* zero implemetation id array */)
271 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
272 2 /* eir_clientid */ + \
273 1 /* eir_sequenceid */ + \
274 1 /* eir_flags */ + \
276 0 /* SP4_NONE (for now) */ + \
277 2 /* eir_server_owner.so_minor_id */ + \
278 /* eir_server_owner.so_major_id<> */ \
279 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
280 /* eir_server_scope<> */ \
281 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
282 1 /* eir_server_impl_id array length */ + \
283 0 /* ignored eir_server_impl_id contents */)
284 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
285 #define decode_channel_attrs_maxsz (6 + \
286 1 /* ca_rdma_ird.len */ + \
288 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
289 2 /* csa_clientid */ + \
290 1 /* csa_sequence */ + \
291 1 /* csa_flags */ + \
292 encode_channel_attrs_maxsz + \
293 encode_channel_attrs_maxsz + \
294 1 /* csa_cb_program */ + \
295 1 /* csa_sec_parms.len (1) */ + \
296 1 /* cb_secflavor (AUTH_SYS) */ + \
298 1 /* machinename.len */ + \
299 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
302 1 /* gids.len (0) */)
303 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
304 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
305 1 /* csr_sequence */ + \
306 1 /* csr_flags */ + \
307 decode_channel_attrs_maxsz + \
308 decode_channel_attrs_maxsz)
309 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
310 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
311 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
312 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
313 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
314 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
315 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
316 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
317 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
318 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
319 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
320 1 /* layout type */ + \
321 1 /* opaque devaddr4 length */ + \
322 /* devaddr4 payload is read into page */ \
323 1 /* notification bitmap length */ + \
324 1 /* notification bitmap */)
325 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
326 encode_stateid_maxsz)
327 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
328 decode_stateid_maxsz + \
329 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
330 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
334 encode_stateid_maxsz + \
335 1 /* new offset (true) */ + \
336 2 /* last byte written */ + \
337 1 /* nt_timechanged (false) */ + \
338 1 /* layoutupdate4 layout type */ + \
339 1 /* NULL filelayout layoutupdate4 payload */)
340 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
341 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
342 encode_stateid_maxsz + \
343 1 /* FIXME: opaque lrf_body always empty at the moment */)
344 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
345 1 + decode_stateid_maxsz)
346 #else /* CONFIG_NFS_V4_1 */
347 #define encode_sequence_maxsz 0
348 #define decode_sequence_maxsz 0
349 #endif /* CONFIG_NFS_V4_1 */
351 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
352 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
353 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
354 encode_sequence_maxsz + \
355 encode_putfh_maxsz + \
357 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
358 decode_sequence_maxsz + \
359 decode_putfh_maxsz + \
361 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
362 encode_sequence_maxsz + \
363 encode_putfh_maxsz + \
364 encode_readlink_maxsz)
365 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
366 decode_sequence_maxsz + \
367 decode_putfh_maxsz + \
368 decode_readlink_maxsz)
369 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
370 encode_sequence_maxsz + \
371 encode_putfh_maxsz + \
372 encode_readdir_maxsz)
373 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
374 decode_sequence_maxsz + \
375 decode_putfh_maxsz + \
376 decode_readdir_maxsz)
377 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
378 encode_sequence_maxsz + \
379 encode_putfh_maxsz + \
380 encode_write_maxsz + \
381 encode_getattr_maxsz)
382 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
383 decode_sequence_maxsz + \
384 decode_putfh_maxsz + \
385 decode_write_maxsz + \
386 decode_getattr_maxsz)
387 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
388 encode_sequence_maxsz + \
389 encode_putfh_maxsz + \
390 encode_commit_maxsz + \
391 encode_getattr_maxsz)
392 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
393 decode_sequence_maxsz + \
394 decode_putfh_maxsz + \
395 decode_commit_maxsz + \
396 decode_getattr_maxsz)
397 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
398 encode_sequence_maxsz + \
399 encode_putfh_maxsz + \
400 encode_savefh_maxsz + \
401 encode_open_maxsz + \
402 encode_getfh_maxsz + \
403 encode_getattr_maxsz + \
404 encode_restorefh_maxsz + \
405 encode_getattr_maxsz)
406 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
407 decode_sequence_maxsz + \
408 decode_putfh_maxsz + \
409 decode_savefh_maxsz + \
410 decode_open_maxsz + \
411 decode_getfh_maxsz + \
412 decode_getattr_maxsz + \
413 decode_restorefh_maxsz + \
414 decode_getattr_maxsz)
415 #define NFS4_enc_open_confirm_sz \
416 (compound_encode_hdr_maxsz + \
417 encode_putfh_maxsz + \
418 encode_open_confirm_maxsz)
419 #define NFS4_dec_open_confirm_sz \
420 (compound_decode_hdr_maxsz + \
421 decode_putfh_maxsz + \
422 decode_open_confirm_maxsz)
423 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
424 encode_sequence_maxsz + \
425 encode_putfh_maxsz + \
426 encode_open_maxsz + \
427 encode_getattr_maxsz)
428 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
429 decode_sequence_maxsz + \
430 decode_putfh_maxsz + \
431 decode_open_maxsz + \
432 decode_getattr_maxsz)
433 #define NFS4_enc_open_downgrade_sz \
434 (compound_encode_hdr_maxsz + \
435 encode_sequence_maxsz + \
436 encode_putfh_maxsz + \
437 encode_open_downgrade_maxsz + \
438 encode_getattr_maxsz)
439 #define NFS4_dec_open_downgrade_sz \
440 (compound_decode_hdr_maxsz + \
441 decode_sequence_maxsz + \
442 decode_putfh_maxsz + \
443 decode_open_downgrade_maxsz + \
444 decode_getattr_maxsz)
445 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
446 encode_sequence_maxsz + \
447 encode_putfh_maxsz + \
448 encode_close_maxsz + \
449 encode_getattr_maxsz)
450 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
451 decode_sequence_maxsz + \
452 decode_putfh_maxsz + \
453 decode_close_maxsz + \
454 decode_getattr_maxsz)
455 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
456 encode_sequence_maxsz + \
457 encode_putfh_maxsz + \
458 encode_setattr_maxsz + \
459 encode_getattr_maxsz)
460 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
461 decode_sequence_maxsz + \
462 decode_putfh_maxsz + \
463 decode_setattr_maxsz + \
464 decode_getattr_maxsz)
465 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
466 encode_sequence_maxsz + \
467 encode_putfh_maxsz + \
469 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
470 decode_sequence_maxsz + \
471 decode_putfh_maxsz + \
473 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
475 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
477 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
478 encode_setclientid_maxsz)
479 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
480 decode_setclientid_maxsz)
481 #define NFS4_enc_setclientid_confirm_sz \
482 (compound_encode_hdr_maxsz + \
483 encode_setclientid_confirm_maxsz + \
484 encode_putrootfh_maxsz + \
486 #define NFS4_dec_setclientid_confirm_sz \
487 (compound_decode_hdr_maxsz + \
488 decode_setclientid_confirm_maxsz + \
489 decode_putrootfh_maxsz + \
491 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
492 encode_sequence_maxsz + \
493 encode_putfh_maxsz + \
495 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
496 decode_sequence_maxsz + \
497 decode_putfh_maxsz + \
499 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
500 encode_sequence_maxsz + \
501 encode_putfh_maxsz + \
503 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
507 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
508 encode_sequence_maxsz + \
509 encode_putfh_maxsz + \
511 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
512 decode_sequence_maxsz + \
513 decode_putfh_maxsz + \
515 #define NFS4_enc_release_lockowner_sz \
516 (compound_encode_hdr_maxsz + \
517 encode_lockowner_maxsz)
518 #define NFS4_dec_release_lockowner_sz \
519 (compound_decode_hdr_maxsz + \
520 decode_lockowner_maxsz)
521 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
522 encode_sequence_maxsz + \
523 encode_putfh_maxsz + \
524 encode_access_maxsz + \
525 encode_getattr_maxsz)
526 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
527 decode_sequence_maxsz + \
528 decode_putfh_maxsz + \
529 decode_access_maxsz + \
530 decode_getattr_maxsz)
531 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
532 encode_sequence_maxsz + \
533 encode_putfh_maxsz + \
534 encode_getattr_maxsz)
535 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
536 decode_sequence_maxsz + \
537 decode_putfh_maxsz + \
538 decode_getattr_maxsz)
539 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
540 encode_sequence_maxsz + \
541 encode_putfh_maxsz + \
542 encode_lookup_maxsz + \
543 encode_getattr_maxsz + \
545 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
546 decode_sequence_maxsz + \
547 decode_putfh_maxsz + \
548 decode_lookup_maxsz + \
549 decode_getattr_maxsz + \
551 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
552 encode_sequence_maxsz + \
553 encode_putrootfh_maxsz + \
554 encode_getattr_maxsz + \
556 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
557 decode_sequence_maxsz + \
558 decode_putrootfh_maxsz + \
559 decode_getattr_maxsz + \
561 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
562 encode_sequence_maxsz + \
563 encode_putfh_maxsz + \
564 encode_remove_maxsz + \
565 encode_getattr_maxsz)
566 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
567 decode_sequence_maxsz + \
568 decode_putfh_maxsz + \
569 decode_remove_maxsz + \
570 decode_getattr_maxsz)
571 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
572 encode_sequence_maxsz + \
573 encode_putfh_maxsz + \
574 encode_savefh_maxsz + \
575 encode_putfh_maxsz + \
576 encode_rename_maxsz + \
577 encode_getattr_maxsz + \
578 encode_restorefh_maxsz + \
579 encode_getattr_maxsz)
580 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
581 decode_sequence_maxsz + \
582 decode_putfh_maxsz + \
583 decode_savefh_maxsz + \
584 decode_putfh_maxsz + \
585 decode_rename_maxsz + \
586 decode_getattr_maxsz + \
587 decode_restorefh_maxsz + \
588 decode_getattr_maxsz)
589 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_savefh_maxsz + \
593 encode_putfh_maxsz + \
594 encode_link_maxsz + \
595 decode_getattr_maxsz + \
596 encode_restorefh_maxsz + \
597 decode_getattr_maxsz)
598 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
599 decode_sequence_maxsz + \
600 decode_putfh_maxsz + \
601 decode_savefh_maxsz + \
602 decode_putfh_maxsz + \
603 decode_link_maxsz + \
604 decode_getattr_maxsz + \
605 decode_restorefh_maxsz + \
606 decode_getattr_maxsz)
607 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
608 encode_sequence_maxsz + \
609 encode_putfh_maxsz + \
610 encode_symlink_maxsz + \
611 encode_getattr_maxsz + \
613 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
614 decode_sequence_maxsz + \
615 decode_putfh_maxsz + \
616 decode_symlink_maxsz + \
617 decode_getattr_maxsz + \
619 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putfh_maxsz + \
622 encode_savefh_maxsz + \
623 encode_create_maxsz + \
624 encode_getfh_maxsz + \
625 encode_getattr_maxsz + \
626 encode_restorefh_maxsz + \
627 encode_getattr_maxsz)
628 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
629 decode_sequence_maxsz + \
630 decode_putfh_maxsz + \
631 decode_savefh_maxsz + \
632 decode_create_maxsz + \
633 decode_getfh_maxsz + \
634 decode_getattr_maxsz + \
635 decode_restorefh_maxsz + \
636 decode_getattr_maxsz)
637 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
638 encode_sequence_maxsz + \
639 encode_putfh_maxsz + \
640 encode_getattr_maxsz)
641 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
642 decode_sequence_maxsz + \
643 decode_putfh_maxsz + \
644 decode_getattr_maxsz)
645 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
646 encode_sequence_maxsz + \
647 encode_putfh_maxsz + \
649 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
653 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
654 encode_sequence_maxsz + \
655 encode_putfh_maxsz + \
656 encode_getattr_maxsz)
657 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
658 decode_sequence_maxsz + \
659 decode_putfh_maxsz + \
660 decode_getattr_maxsz)
661 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
662 encode_sequence_maxsz + \
663 encode_putfh_maxsz + \
664 encode_delegreturn_maxsz + \
665 encode_getattr_maxsz)
666 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
667 decode_sequence_maxsz + \
668 decode_delegreturn_maxsz + \
669 decode_getattr_maxsz)
670 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
671 encode_sequence_maxsz + \
672 encode_putfh_maxsz + \
674 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
675 decode_sequence_maxsz + \
676 decode_putfh_maxsz + \
678 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
679 encode_sequence_maxsz + \
680 encode_putfh_maxsz + \
682 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
683 decode_sequence_maxsz + \
684 decode_putfh_maxsz + \
686 #define NFS4_enc_fs_locations_sz \
687 (compound_encode_hdr_maxsz + \
688 encode_sequence_maxsz + \
689 encode_putfh_maxsz + \
690 encode_lookup_maxsz + \
691 encode_fs_locations_maxsz)
692 #define NFS4_dec_fs_locations_sz \
693 (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_putfh_maxsz + \
696 decode_lookup_maxsz + \
697 decode_fs_locations_maxsz)
698 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
699 encode_sequence_maxsz + \
700 encode_putfh_maxsz + \
701 encode_secinfo_maxsz)
702 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
703 decode_sequence_maxsz + \
704 decode_putfh_maxsz + \
705 decode_secinfo_maxsz)
706 #if defined(CONFIG_NFS_V4_1)
707 #define NFS4_enc_exchange_id_sz \
708 (compound_encode_hdr_maxsz + \
709 encode_exchange_id_maxsz)
710 #define NFS4_dec_exchange_id_sz \
711 (compound_decode_hdr_maxsz + \
712 decode_exchange_id_maxsz)
713 #define NFS4_enc_create_session_sz \
714 (compound_encode_hdr_maxsz + \
715 encode_create_session_maxsz)
716 #define NFS4_dec_create_session_sz \
717 (compound_decode_hdr_maxsz + \
718 decode_create_session_maxsz)
719 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
720 encode_destroy_session_maxsz)
721 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
722 decode_destroy_session_maxsz)
723 #define NFS4_enc_sequence_sz \
724 (compound_decode_hdr_maxsz + \
725 encode_sequence_maxsz)
726 #define NFS4_dec_sequence_sz \
727 (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz)
729 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
730 encode_sequence_maxsz + \
731 encode_putrootfh_maxsz + \
733 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
734 decode_sequence_maxsz + \
735 decode_putrootfh_maxsz + \
737 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
738 encode_sequence_maxsz + \
739 encode_reclaim_complete_maxsz)
740 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
741 decode_sequence_maxsz + \
742 decode_reclaim_complete_maxsz)
743 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
744 encode_sequence_maxsz +\
745 encode_getdeviceinfo_maxsz)
746 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
747 decode_sequence_maxsz + \
748 decode_getdeviceinfo_maxsz)
749 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
750 encode_sequence_maxsz + \
751 encode_putfh_maxsz + \
752 encode_layoutget_maxsz)
753 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
754 decode_sequence_maxsz + \
755 decode_putfh_maxsz + \
756 decode_layoutget_maxsz)
757 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
758 encode_sequence_maxsz +\
759 encode_putfh_maxsz + \
760 encode_layoutcommit_maxsz + \
761 encode_getattr_maxsz)
762 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
763 decode_sequence_maxsz + \
764 decode_putfh_maxsz + \
765 decode_layoutcommit_maxsz + \
766 decode_getattr_maxsz)
767 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
768 encode_sequence_maxsz + \
769 encode_putfh_maxsz + \
770 encode_layoutreturn_maxsz)
771 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
772 decode_sequence_maxsz + \
773 decode_putfh_maxsz + \
774 decode_layoutreturn_maxsz)
776 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
777 compound_encode_hdr_maxsz +
778 encode_sequence_maxsz +
780 encode_getattr_maxsz) *
783 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
784 compound_decode_hdr_maxsz +
785 decode_sequence_maxsz +
786 decode_putfh_maxsz) *
788 #endif /* CONFIG_NFS_V4_1 */
790 static const umode_t nfs_type2fmt[] = {
797 [NF4SOCK] = S_IFSOCK,
803 struct compound_hdr {
809 uint32_t replen; /* expected reply words */
813 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
815 __be32 *p = xdr_reserve_space(xdr, nbytes);
820 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
824 p = xdr_reserve_space(xdr, 4 + len);
826 xdr_encode_opaque(p, str, len);
829 static void encode_compound_hdr(struct xdr_stream *xdr,
830 struct rpc_rqst *req,
831 struct compound_hdr *hdr)
834 struct rpc_auth *auth = req->rq_cred->cr_auth;
836 /* initialize running count of expected bytes in reply.
837 * NOTE: the replied tag SHOULD be the same is the one sent,
838 * but this is not required as a MUST for the server to do so. */
839 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
841 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
842 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
843 p = reserve_space(xdr, 4 + hdr->taglen + 8);
844 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
845 *p++ = cpu_to_be32(hdr->minorversion);
847 *p = cpu_to_be32(hdr->nops);
850 static void encode_nops(struct compound_hdr *hdr)
852 BUG_ON(hdr->nops > NFS4_MAX_OPS);
853 *hdr->nops_p = htonl(hdr->nops);
856 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
860 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
862 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
865 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
867 char owner_name[IDMAP_NAMESZ];
868 char owner_group[IDMAP_NAMESZ];
869 int owner_namelen = 0;
870 int owner_grouplen = 0;
878 * We reserve enough space to write the entire attribute buffer at once.
879 * In the worst-case, this would be
880 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
881 * = 36 bytes, plus any contribution from variable-length fields
882 * such as owner/group.
887 if (iap->ia_valid & ATTR_SIZE)
889 if (iap->ia_valid & ATTR_MODE)
891 if (iap->ia_valid & ATTR_UID) {
892 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
893 if (owner_namelen < 0) {
894 dprintk("nfs: couldn't resolve uid %d to string\n",
897 strcpy(owner_name, "nobody");
898 owner_namelen = sizeof("nobody") - 1;
901 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
903 if (iap->ia_valid & ATTR_GID) {
904 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
905 if (owner_grouplen < 0) {
906 dprintk("nfs: couldn't resolve gid %d to string\n",
908 strcpy(owner_group, "nobody");
909 owner_grouplen = sizeof("nobody") - 1;
912 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
914 if (iap->ia_valid & ATTR_ATIME_SET)
916 else if (iap->ia_valid & ATTR_ATIME)
918 if (iap->ia_valid & ATTR_MTIME_SET)
920 else if (iap->ia_valid & ATTR_MTIME)
922 p = reserve_space(xdr, len);
925 * We write the bitmap length now, but leave the bitmap and the attribute
926 * buffer length to be backfilled at the end of this routine.
928 *p++ = cpu_to_be32(2);
932 if (iap->ia_valid & ATTR_SIZE) {
933 bmval0 |= FATTR4_WORD0_SIZE;
934 p = xdr_encode_hyper(p, iap->ia_size);
936 if (iap->ia_valid & ATTR_MODE) {
937 bmval1 |= FATTR4_WORD1_MODE;
938 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
940 if (iap->ia_valid & ATTR_UID) {
941 bmval1 |= FATTR4_WORD1_OWNER;
942 p = xdr_encode_opaque(p, owner_name, owner_namelen);
944 if (iap->ia_valid & ATTR_GID) {
945 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
946 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
948 if (iap->ia_valid & ATTR_ATIME_SET) {
949 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
950 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
951 *p++ = cpu_to_be32(0);
952 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
953 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
955 else if (iap->ia_valid & ATTR_ATIME) {
956 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
957 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
959 if (iap->ia_valid & ATTR_MTIME_SET) {
960 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
961 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
962 *p++ = cpu_to_be32(0);
963 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
964 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
966 else if (iap->ia_valid & ATTR_MTIME) {
967 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
968 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
972 * Now we backfill the bitmap and the attribute buffer length.
974 if (len != ((char *)p - (char *)q) + 4) {
975 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
976 len, ((char *)p - (char *)q) + 4);
979 len = (char *)p - (char *)q - 12;
980 *q++ = htonl(bmval0);
981 *q++ = htonl(bmval1);
987 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
991 p = reserve_space(xdr, 8);
992 *p++ = cpu_to_be32(OP_ACCESS);
993 *p = cpu_to_be32(access);
995 hdr->replen += decode_access_maxsz;
998 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1002 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
1003 *p++ = cpu_to_be32(OP_CLOSE);
1004 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1005 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1007 hdr->replen += decode_close_maxsz;
1010 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1014 p = reserve_space(xdr, 16);
1015 *p++ = cpu_to_be32(OP_COMMIT);
1016 p = xdr_encode_hyper(p, args->offset);
1017 *p = cpu_to_be32(args->count);
1019 hdr->replen += decode_commit_maxsz;
1022 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1026 p = reserve_space(xdr, 8);
1027 *p++ = cpu_to_be32(OP_CREATE);
1028 *p = cpu_to_be32(create->ftype);
1030 switch (create->ftype) {
1032 p = reserve_space(xdr, 4);
1033 *p = cpu_to_be32(create->u.symlink.len);
1034 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1037 case NF4BLK: case NF4CHR:
1038 p = reserve_space(xdr, 8);
1039 *p++ = cpu_to_be32(create->u.device.specdata1);
1040 *p = cpu_to_be32(create->u.device.specdata2);
1047 encode_string(xdr, create->name->len, create->name->name);
1049 hdr->replen += decode_create_maxsz;
1051 encode_attrs(xdr, create->attrs, create->server);
1054 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1058 p = reserve_space(xdr, 12);
1059 *p++ = cpu_to_be32(OP_GETATTR);
1060 *p++ = cpu_to_be32(1);
1061 *p = cpu_to_be32(bitmap);
1063 hdr->replen += decode_getattr_maxsz;
1066 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1070 p = reserve_space(xdr, 16);
1071 *p++ = cpu_to_be32(OP_GETATTR);
1072 *p++ = cpu_to_be32(2);
1073 *p++ = cpu_to_be32(bm0);
1074 *p = cpu_to_be32(bm1);
1076 hdr->replen += decode_getattr_maxsz;
1079 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1081 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1082 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1085 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1087 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
1088 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
1091 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1093 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1094 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1097 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1101 p = reserve_space(xdr, 4);
1102 *p = cpu_to_be32(OP_GETFH);
1104 hdr->replen += decode_getfh_maxsz;
1107 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1111 p = reserve_space(xdr, 8 + name->len);
1112 *p++ = cpu_to_be32(OP_LINK);
1113 xdr_encode_opaque(p, name->name, name->len);
1115 hdr->replen += decode_link_maxsz;
1118 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1120 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1121 return block ? NFS4_READW_LT : NFS4_READ_LT;
1122 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1125 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1127 if (fl->fl_end == OFFSET_MAX)
1128 return ~(uint64_t)0;
1129 return fl->fl_end - fl->fl_start + 1;
1132 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1136 p = reserve_space(xdr, 32);
1137 p = xdr_encode_hyper(p, lowner->clientid);
1138 *p++ = cpu_to_be32(20);
1139 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1140 *p++ = cpu_to_be32(lowner->s_dev);
1141 xdr_encode_hyper(p, lowner->id);
1145 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1146 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1148 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1152 p = reserve_space(xdr, 32);
1153 *p++ = cpu_to_be32(OP_LOCK);
1154 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1155 *p++ = cpu_to_be32(args->reclaim);
1156 p = xdr_encode_hyper(p, args->fl->fl_start);
1157 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1158 *p = cpu_to_be32(args->new_lock_owner);
1159 if (args->new_lock_owner){
1160 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1161 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1162 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1163 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1164 encode_lockowner(xdr, &args->lock_owner);
1167 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1168 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1169 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1172 hdr->replen += decode_lock_maxsz;
1175 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1179 p = reserve_space(xdr, 24);
1180 *p++ = cpu_to_be32(OP_LOCKT);
1181 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1182 p = xdr_encode_hyper(p, args->fl->fl_start);
1183 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1184 encode_lockowner(xdr, &args->lock_owner);
1186 hdr->replen += decode_lockt_maxsz;
1189 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1193 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1194 *p++ = cpu_to_be32(OP_LOCKU);
1195 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1196 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1197 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1198 p = xdr_encode_hyper(p, args->fl->fl_start);
1199 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1201 hdr->replen += decode_locku_maxsz;
1204 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1208 p = reserve_space(xdr, 4);
1209 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1210 encode_lockowner(xdr, lowner);
1212 hdr->replen += decode_release_lockowner_maxsz;
1215 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1217 int len = name->len;
1220 p = reserve_space(xdr, 8 + len);
1221 *p++ = cpu_to_be32(OP_LOOKUP);
1222 xdr_encode_opaque(p, name->name, len);
1224 hdr->replen += decode_lookup_maxsz;
1227 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1231 p = reserve_space(xdr, 8);
1232 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1234 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1237 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1239 case FMODE_READ|FMODE_WRITE:
1240 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1243 *p++ = cpu_to_be32(0);
1245 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1248 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1252 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1255 p = reserve_space(xdr, 8);
1256 *p++ = cpu_to_be32(OP_OPEN);
1257 *p = cpu_to_be32(arg->seqid->sequence->counter);
1258 encode_share_access(xdr, arg->fmode);
1259 p = reserve_space(xdr, 32);
1260 p = xdr_encode_hyper(p, arg->clientid);
1261 *p++ = cpu_to_be32(20);
1262 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1263 *p++ = cpu_to_be32(arg->server->s_dev);
1264 xdr_encode_hyper(p, arg->id);
1267 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1270 struct nfs_client *clp;
1272 p = reserve_space(xdr, 4);
1273 switch(arg->open_flags & O_EXCL) {
1275 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1276 encode_attrs(xdr, arg->u.attrs, arg->server);
1279 clp = arg->server->nfs_client;
1280 if (clp->cl_mvops->minor_version > 0) {
1281 if (nfs4_has_persistent_session(clp)) {
1282 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1283 encode_attrs(xdr, arg->u.attrs, arg->server);
1287 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1288 encode_nfs4_verifier(xdr, &arg->u.verifier);
1290 encode_attrs(xdr, &dummy, arg->server);
1293 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1294 encode_nfs4_verifier(xdr, &arg->u.verifier);
1299 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1303 p = reserve_space(xdr, 4);
1304 switch (arg->open_flags & O_CREAT) {
1306 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1309 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1310 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1311 encode_createmode(xdr, arg);
1315 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1319 p = reserve_space(xdr, 4);
1320 switch (delegation_type) {
1322 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1325 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1327 case FMODE_WRITE|FMODE_READ:
1328 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1335 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1339 p = reserve_space(xdr, 4);
1340 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1341 encode_string(xdr, name->len, name->name);
1344 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1348 p = reserve_space(xdr, 4);
1349 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1350 encode_delegation_type(xdr, type);
1353 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1357 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1358 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1359 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1360 encode_string(xdr, name->len, name->name);
1363 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1365 encode_openhdr(xdr, arg);
1366 encode_opentype(xdr, arg);
1367 switch (arg->claim) {
1368 case NFS4_OPEN_CLAIM_NULL:
1369 encode_claim_null(xdr, arg->name);
1371 case NFS4_OPEN_CLAIM_PREVIOUS:
1372 encode_claim_previous(xdr, arg->u.delegation_type);
1374 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1375 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1381 hdr->replen += decode_open_maxsz;
1384 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1388 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1389 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1390 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1391 *p = cpu_to_be32(arg->seqid->sequence->counter);
1393 hdr->replen += decode_open_confirm_maxsz;
1396 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1400 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1401 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1402 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1403 *p = cpu_to_be32(arg->seqid->sequence->counter);
1404 encode_share_access(xdr, arg->fmode);
1406 hdr->replen += decode_open_downgrade_maxsz;
1410 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1415 p = reserve_space(xdr, 8 + len);
1416 *p++ = cpu_to_be32(OP_PUTFH);
1417 xdr_encode_opaque(p, fh->data, len);
1419 hdr->replen += decode_putfh_maxsz;
1422 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1426 p = reserve_space(xdr, 4);
1427 *p = cpu_to_be32(OP_PUTROOTFH);
1429 hdr->replen += decode_putrootfh_maxsz;
1432 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid)
1434 nfs4_stateid stateid;
1437 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1438 if (ctx->state != NULL) {
1439 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
1441 stateid.stateid.seqid = 0;
1442 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1444 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1447 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1451 p = reserve_space(xdr, 4);
1452 *p = cpu_to_be32(OP_READ);
1454 encode_stateid(xdr, args->context, args->lock_context,
1457 p = reserve_space(xdr, 12);
1458 p = xdr_encode_hyper(p, args->offset);
1459 *p = cpu_to_be32(args->count);
1461 hdr->replen += decode_read_maxsz;
1464 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1466 uint32_t attrs[2] = {
1467 FATTR4_WORD0_RDATTR_ERROR,
1468 FATTR4_WORD1_MOUNTED_ON_FILEID,
1470 uint32_t dircount = readdir->count >> 1;
1473 if (readdir->plus) {
1474 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1475 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1476 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1477 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1478 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1479 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1482 /* Use mounted_on_fileid only if the server supports it */
1483 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1484 attrs[0] |= FATTR4_WORD0_FILEID;
1486 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1487 *p++ = cpu_to_be32(OP_READDIR);
1488 p = xdr_encode_hyper(p, readdir->cookie);
1489 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1490 *p++ = cpu_to_be32(dircount);
1491 *p++ = cpu_to_be32(readdir->count);
1492 *p++ = cpu_to_be32(2);
1494 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1495 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1497 hdr->replen += decode_readdir_maxsz;
1498 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1500 (unsigned long long)readdir->cookie,
1501 ((u32 *)readdir->verifier.data)[0],
1502 ((u32 *)readdir->verifier.data)[1],
1503 attrs[0] & readdir->bitmask[0],
1504 attrs[1] & readdir->bitmask[1]);
1507 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1511 p = reserve_space(xdr, 4);
1512 *p = cpu_to_be32(OP_READLINK);
1514 hdr->replen += decode_readlink_maxsz;
1517 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1521 p = reserve_space(xdr, 8 + name->len);
1522 *p++ = cpu_to_be32(OP_REMOVE);
1523 xdr_encode_opaque(p, name->name, name->len);
1525 hdr->replen += decode_remove_maxsz;
1528 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1532 p = reserve_space(xdr, 4);
1533 *p = cpu_to_be32(OP_RENAME);
1534 encode_string(xdr, oldname->len, oldname->name);
1535 encode_string(xdr, newname->len, newname->name);
1537 hdr->replen += decode_rename_maxsz;
1540 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1544 p = reserve_space(xdr, 12);
1545 *p++ = cpu_to_be32(OP_RENEW);
1546 xdr_encode_hyper(p, client_stateid->cl_clientid);
1548 hdr->replen += decode_renew_maxsz;
1552 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1556 p = reserve_space(xdr, 4);
1557 *p = cpu_to_be32(OP_RESTOREFH);
1559 hdr->replen += decode_restorefh_maxsz;
1563 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1567 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1568 *p++ = cpu_to_be32(OP_SETATTR);
1569 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1570 p = reserve_space(xdr, 2*4);
1571 *p++ = cpu_to_be32(1);
1572 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1573 BUG_ON(arg->acl_len % 4);
1574 p = reserve_space(xdr, 4);
1575 *p = cpu_to_be32(arg->acl_len);
1576 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1578 hdr->replen += decode_setacl_maxsz;
1582 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1586 p = reserve_space(xdr, 4);
1587 *p = cpu_to_be32(OP_SAVEFH);
1589 hdr->replen += decode_savefh_maxsz;
1592 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1596 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1597 *p++ = cpu_to_be32(OP_SETATTR);
1598 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1600 hdr->replen += decode_setattr_maxsz;
1601 encode_attrs(xdr, arg->iap, server);
1604 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1608 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1609 *p++ = cpu_to_be32(OP_SETCLIENTID);
1610 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1612 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1613 p = reserve_space(xdr, 4);
1614 *p = cpu_to_be32(setclientid->sc_prog);
1615 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1616 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1617 p = reserve_space(xdr, 4);
1618 *p = cpu_to_be32(setclientid->sc_cb_ident);
1620 hdr->replen += decode_setclientid_maxsz;
1623 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1627 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1628 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1629 p = xdr_encode_hyper(p, arg->clientid);
1630 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
1632 hdr->replen += decode_setclientid_confirm_maxsz;
1635 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1639 p = reserve_space(xdr, 4);
1640 *p = cpu_to_be32(OP_WRITE);
1642 encode_stateid(xdr, args->context, args->lock_context,
1645 p = reserve_space(xdr, 16);
1646 p = xdr_encode_hyper(p, args->offset);
1647 *p++ = cpu_to_be32(args->stable);
1648 *p = cpu_to_be32(args->count);
1650 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1652 hdr->replen += decode_write_maxsz;
1655 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1659 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1661 *p++ = cpu_to_be32(OP_DELEGRETURN);
1662 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1664 hdr->replen += decode_delegreturn_maxsz;
1667 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1669 int len = name->len;
1672 p = reserve_space(xdr, 8 + len);
1673 *p++ = cpu_to_be32(OP_SECINFO);
1674 xdr_encode_opaque(p, name->name, len);
1676 hdr->replen += decode_secinfo_maxsz;
1679 #if defined(CONFIG_NFS_V4_1)
1680 /* NFSv4.1 operations */
1681 static void encode_exchange_id(struct xdr_stream *xdr,
1682 struct nfs41_exchange_id_args *args,
1683 struct compound_hdr *hdr)
1687 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1688 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1689 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1691 encode_string(xdr, args->id_len, args->id);
1693 p = reserve_space(xdr, 12);
1694 *p++ = cpu_to_be32(args->flags);
1695 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1696 *p = cpu_to_be32(0); /* zero length implementation id array */
1698 hdr->replen += decode_exchange_id_maxsz;
1701 static void encode_create_session(struct xdr_stream *xdr,
1702 struct nfs41_create_session_args *args,
1703 struct compound_hdr *hdr)
1706 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1708 struct nfs_client *clp = args->client;
1709 u32 max_resp_sz_cached;
1712 * Assumes OPEN is the biggest non-idempotent compound.
1713 * 2 is the verifier.
1715 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1716 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1718 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1721 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1722 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1723 p = xdr_encode_hyper(p, clp->cl_clientid);
1724 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1725 *p++ = cpu_to_be32(args->flags); /*flags */
1728 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1729 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1730 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1731 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1732 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1733 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1734 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1737 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1738 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1739 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1740 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1741 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1742 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1743 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1745 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1746 *p++ = cpu_to_be32(1);
1747 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1749 /* authsys_parms rfc1831 */
1750 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1751 p = xdr_encode_opaque(p, machine_name, len);
1752 *p++ = cpu_to_be32(0); /* UID */
1753 *p++ = cpu_to_be32(0); /* GID */
1754 *p = cpu_to_be32(0); /* No more gids */
1756 hdr->replen += decode_create_session_maxsz;
1759 static void encode_destroy_session(struct xdr_stream *xdr,
1760 struct nfs4_session *session,
1761 struct compound_hdr *hdr)
1764 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1765 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1766 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1768 hdr->replen += decode_destroy_session_maxsz;
1771 static void encode_reclaim_complete(struct xdr_stream *xdr,
1772 struct nfs41_reclaim_complete_args *args,
1773 struct compound_hdr *hdr)
1777 p = reserve_space(xdr, 8);
1778 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1779 *p++ = cpu_to_be32(args->one_fs);
1781 hdr->replen += decode_reclaim_complete_maxsz;
1783 #endif /* CONFIG_NFS_V4_1 */
1785 static void encode_sequence(struct xdr_stream *xdr,
1786 const struct nfs4_sequence_args *args,
1787 struct compound_hdr *hdr)
1789 #if defined(CONFIG_NFS_V4_1)
1790 struct nfs4_session *session = args->sa_session;
1791 struct nfs4_slot_table *tp;
1792 struct nfs4_slot *slot;
1798 tp = &session->fc_slot_table;
1800 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1801 slot = tp->slots + args->sa_slotid;
1803 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1804 *p++ = cpu_to_be32(OP_SEQUENCE);
1807 * Sessionid + seqid + slotid + max slotid + cache_this
1809 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1810 "max_slotid=%d cache_this=%d\n",
1812 ((u32 *)session->sess_id.data)[0],
1813 ((u32 *)session->sess_id.data)[1],
1814 ((u32 *)session->sess_id.data)[2],
1815 ((u32 *)session->sess_id.data)[3],
1816 slot->seq_nr, args->sa_slotid,
1817 tp->highest_used_slotid, args->sa_cache_this);
1818 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1819 *p++ = cpu_to_be32(slot->seq_nr);
1820 *p++ = cpu_to_be32(args->sa_slotid);
1821 *p++ = cpu_to_be32(tp->highest_used_slotid);
1822 *p = cpu_to_be32(args->sa_cache_this);
1824 hdr->replen += decode_sequence_maxsz;
1825 #endif /* CONFIG_NFS_V4_1 */
1828 #ifdef CONFIG_NFS_V4_1
1830 encode_getdeviceinfo(struct xdr_stream *xdr,
1831 const struct nfs4_getdeviceinfo_args *args,
1832 struct compound_hdr *hdr)
1836 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE);
1837 *p++ = cpu_to_be32(OP_GETDEVICEINFO);
1838 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1839 NFS4_DEVICEID4_SIZE);
1840 *p++ = cpu_to_be32(args->pdev->layout_type);
1841 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1842 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1844 hdr->replen += decode_getdeviceinfo_maxsz;
1848 encode_layoutget(struct xdr_stream *xdr,
1849 const struct nfs4_layoutget_args *args,
1850 struct compound_hdr *hdr)
1854 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1855 *p++ = cpu_to_be32(OP_LAYOUTGET);
1856 *p++ = cpu_to_be32(0); /* Signal layout available */
1857 *p++ = cpu_to_be32(args->type);
1858 *p++ = cpu_to_be32(args->range.iomode);
1859 p = xdr_encode_hyper(p, args->range.offset);
1860 p = xdr_encode_hyper(p, args->range.length);
1861 p = xdr_encode_hyper(p, args->minlength);
1862 p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
1863 *p = cpu_to_be32(args->maxcount);
1865 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1869 (unsigned long)args->range.offset,
1870 (unsigned long)args->range.length,
1873 hdr->replen += decode_layoutget_maxsz;
1877 encode_layoutcommit(struct xdr_stream *xdr,
1878 const struct nfs4_layoutcommit_args *args,
1879 struct compound_hdr *hdr)
1883 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1884 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1886 p = reserve_space(xdr, 48 + NFS4_STATEID_SIZE);
1887 *p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
1888 /* Only whole file layouts */
1889 p = xdr_encode_hyper(p, 0); /* offset */
1890 p = xdr_encode_hyper(p, NFS4_MAX_UINT64); /* length */
1891 *p++ = cpu_to_be32(0); /* reclaim */
1892 p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE);
1893 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1894 p = xdr_encode_hyper(p, args->lastbytewritten);
1895 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1896 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1897 *p++ = cpu_to_be32(0); /* no file layout payload */
1900 hdr->replen += decode_layoutcommit_maxsz;
1905 encode_layoutreturn(struct xdr_stream *xdr,
1906 const struct nfs4_layoutreturn_args *args,
1907 struct compound_hdr *hdr)
1911 p = reserve_space(xdr, 20);
1912 *p++ = cpu_to_be32(OP_LAYOUTRETURN);
1913 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1914 *p++ = cpu_to_be32(args->layout_type);
1915 *p++ = cpu_to_be32(IOMODE_ANY);
1916 *p = cpu_to_be32(RETURN_FILE);
1917 p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE);
1918 p = xdr_encode_hyper(p, 0);
1919 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1920 spin_lock(&args->inode->i_lock);
1921 xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
1922 spin_unlock(&args->inode->i_lock);
1923 p = reserve_space(xdr, 4);
1924 *p = cpu_to_be32(0);
1926 hdr->replen += decode_layoutreturn_maxsz;
1928 #endif /* CONFIG_NFS_V4_1 */
1931 * END OF "GENERIC" ENCODE ROUTINES.
1934 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1936 #if defined(CONFIG_NFS_V4_1)
1937 if (args->sa_session)
1938 return args->sa_session->clp->cl_mvops->minor_version;
1939 #endif /* CONFIG_NFS_V4_1 */
1944 * Encode an ACCESS request
1946 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
1947 const struct nfs4_accessargs *args)
1949 struct compound_hdr hdr = {
1950 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1953 encode_compound_hdr(xdr, req, &hdr);
1954 encode_sequence(xdr, &args->seq_args, &hdr);
1955 encode_putfh(xdr, args->fh, &hdr);
1956 encode_access(xdr, args->access, &hdr);
1957 encode_getfattr(xdr, args->bitmask, &hdr);
1962 * Encode LOOKUP request
1964 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
1965 const struct nfs4_lookup_arg *args)
1967 struct compound_hdr hdr = {
1968 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1971 encode_compound_hdr(xdr, req, &hdr);
1972 encode_sequence(xdr, &args->seq_args, &hdr);
1973 encode_putfh(xdr, args->dir_fh, &hdr);
1974 encode_lookup(xdr, args->name, &hdr);
1975 encode_getfh(xdr, &hdr);
1976 encode_getfattr(xdr, args->bitmask, &hdr);
1981 * Encode LOOKUP_ROOT request
1983 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
1984 struct xdr_stream *xdr,
1985 const struct nfs4_lookup_root_arg *args)
1987 struct compound_hdr hdr = {
1988 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
1991 encode_compound_hdr(xdr, req, &hdr);
1992 encode_sequence(xdr, &args->seq_args, &hdr);
1993 encode_putrootfh(xdr, &hdr);
1994 encode_getfh(xdr, &hdr);
1995 encode_getfattr(xdr, args->bitmask, &hdr);
2000 * Encode REMOVE request
2002 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2003 const struct nfs_removeargs *args)
2005 struct compound_hdr hdr = {
2006 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2009 encode_compound_hdr(xdr, req, &hdr);
2010 encode_sequence(xdr, &args->seq_args, &hdr);
2011 encode_putfh(xdr, args->fh, &hdr);
2012 encode_remove(xdr, &args->name, &hdr);
2013 encode_getfattr(xdr, args->bitmask, &hdr);
2018 * Encode RENAME request
2020 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2021 const struct nfs_renameargs *args)
2023 struct compound_hdr hdr = {
2024 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2027 encode_compound_hdr(xdr, req, &hdr);
2028 encode_sequence(xdr, &args->seq_args, &hdr);
2029 encode_putfh(xdr, args->old_dir, &hdr);
2030 encode_savefh(xdr, &hdr);
2031 encode_putfh(xdr, args->new_dir, &hdr);
2032 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2033 encode_getfattr(xdr, args->bitmask, &hdr);
2034 encode_restorefh(xdr, &hdr);
2035 encode_getfattr(xdr, args->bitmask, &hdr);
2040 * Encode LINK request
2042 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2043 const struct nfs4_link_arg *args)
2045 struct compound_hdr hdr = {
2046 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2049 encode_compound_hdr(xdr, req, &hdr);
2050 encode_sequence(xdr, &args->seq_args, &hdr);
2051 encode_putfh(xdr, args->fh, &hdr);
2052 encode_savefh(xdr, &hdr);
2053 encode_putfh(xdr, args->dir_fh, &hdr);
2054 encode_link(xdr, args->name, &hdr);
2055 encode_getfattr(xdr, args->bitmask, &hdr);
2056 encode_restorefh(xdr, &hdr);
2057 encode_getfattr(xdr, args->bitmask, &hdr);
2062 * Encode CREATE request
2064 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2065 const struct nfs4_create_arg *args)
2067 struct compound_hdr hdr = {
2068 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2071 encode_compound_hdr(xdr, req, &hdr);
2072 encode_sequence(xdr, &args->seq_args, &hdr);
2073 encode_putfh(xdr, args->dir_fh, &hdr);
2074 encode_savefh(xdr, &hdr);
2075 encode_create(xdr, args, &hdr);
2076 encode_getfh(xdr, &hdr);
2077 encode_getfattr(xdr, args->bitmask, &hdr);
2078 encode_restorefh(xdr, &hdr);
2079 encode_getfattr(xdr, args->bitmask, &hdr);
2084 * Encode SYMLINK request
2086 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2087 const struct nfs4_create_arg *args)
2089 nfs4_xdr_enc_create(req, xdr, args);
2093 * Encode GETATTR request
2095 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2096 const struct nfs4_getattr_arg *args)
2098 struct compound_hdr hdr = {
2099 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2102 encode_compound_hdr(xdr, req, &hdr);
2103 encode_sequence(xdr, &args->seq_args, &hdr);
2104 encode_putfh(xdr, args->fh, &hdr);
2105 encode_getfattr(xdr, args->bitmask, &hdr);
2110 * Encode a CLOSE request
2112 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2113 struct nfs_closeargs *args)
2115 struct compound_hdr hdr = {
2116 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2119 encode_compound_hdr(xdr, req, &hdr);
2120 encode_sequence(xdr, &args->seq_args, &hdr);
2121 encode_putfh(xdr, args->fh, &hdr);
2122 encode_close(xdr, args, &hdr);
2123 encode_getfattr(xdr, args->bitmask, &hdr);
2128 * Encode an OPEN request
2130 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2131 struct nfs_openargs *args)
2133 struct compound_hdr hdr = {
2134 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2137 encode_compound_hdr(xdr, req, &hdr);
2138 encode_sequence(xdr, &args->seq_args, &hdr);
2139 encode_putfh(xdr, args->fh, &hdr);
2140 encode_savefh(xdr, &hdr);
2141 encode_open(xdr, args, &hdr);
2142 encode_getfh(xdr, &hdr);
2143 encode_getfattr(xdr, args->bitmask, &hdr);
2144 encode_restorefh(xdr, &hdr);
2145 encode_getfattr(xdr, args->bitmask, &hdr);
2150 * Encode an OPEN_CONFIRM request
2152 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2153 struct xdr_stream *xdr,
2154 struct nfs_open_confirmargs *args)
2156 struct compound_hdr hdr = {
2160 encode_compound_hdr(xdr, req, &hdr);
2161 encode_putfh(xdr, args->fh, &hdr);
2162 encode_open_confirm(xdr, args, &hdr);
2167 * Encode an OPEN request with no attributes.
2169 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2170 struct xdr_stream *xdr,
2171 struct nfs_openargs *args)
2173 struct compound_hdr hdr = {
2174 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2177 encode_compound_hdr(xdr, req, &hdr);
2178 encode_sequence(xdr, &args->seq_args, &hdr);
2179 encode_putfh(xdr, args->fh, &hdr);
2180 encode_open(xdr, args, &hdr);
2181 encode_getfattr(xdr, args->bitmask, &hdr);
2186 * Encode an OPEN_DOWNGRADE request
2188 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2189 struct xdr_stream *xdr,
2190 struct nfs_closeargs *args)
2192 struct compound_hdr hdr = {
2193 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2196 encode_compound_hdr(xdr, req, &hdr);
2197 encode_sequence(xdr, &args->seq_args, &hdr);
2198 encode_putfh(xdr, args->fh, &hdr);
2199 encode_open_downgrade(xdr, args, &hdr);
2200 encode_getfattr(xdr, args->bitmask, &hdr);
2205 * Encode a LOCK request
2207 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2208 struct nfs_lock_args *args)
2210 struct compound_hdr hdr = {
2211 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2214 encode_compound_hdr(xdr, req, &hdr);
2215 encode_sequence(xdr, &args->seq_args, &hdr);
2216 encode_putfh(xdr, args->fh, &hdr);
2217 encode_lock(xdr, args, &hdr);
2222 * Encode a LOCKT request
2224 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2225 struct nfs_lockt_args *args)
2227 struct compound_hdr hdr = {
2228 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2231 encode_compound_hdr(xdr, req, &hdr);
2232 encode_sequence(xdr, &args->seq_args, &hdr);
2233 encode_putfh(xdr, args->fh, &hdr);
2234 encode_lockt(xdr, args, &hdr);
2239 * Encode a LOCKU request
2241 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2242 struct nfs_locku_args *args)
2244 struct compound_hdr hdr = {
2245 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2248 encode_compound_hdr(xdr, req, &hdr);
2249 encode_sequence(xdr, &args->seq_args, &hdr);
2250 encode_putfh(xdr, args->fh, &hdr);
2251 encode_locku(xdr, args, &hdr);
2255 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2256 struct xdr_stream *xdr,
2257 struct nfs_release_lockowner_args *args)
2259 struct compound_hdr hdr = {
2263 encode_compound_hdr(xdr, req, &hdr);
2264 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2269 * Encode a READLINK request
2271 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2272 const struct nfs4_readlink *args)
2274 struct compound_hdr hdr = {
2275 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2278 encode_compound_hdr(xdr, req, &hdr);
2279 encode_sequence(xdr, &args->seq_args, &hdr);
2280 encode_putfh(xdr, args->fh, &hdr);
2281 encode_readlink(xdr, args, req, &hdr);
2283 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2284 args->pgbase, args->pglen);
2289 * Encode a READDIR request
2291 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2292 const struct nfs4_readdir_arg *args)
2294 struct compound_hdr hdr = {
2295 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2298 encode_compound_hdr(xdr, req, &hdr);
2299 encode_sequence(xdr, &args->seq_args, &hdr);
2300 encode_putfh(xdr, args->fh, &hdr);
2301 encode_readdir(xdr, args, req, &hdr);
2303 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2304 args->pgbase, args->count);
2305 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2306 __func__, hdr.replen << 2, args->pages,
2307 args->pgbase, args->count);
2312 * Encode a READ request
2314 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2315 struct nfs_readargs *args)
2317 struct compound_hdr hdr = {
2318 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2321 encode_compound_hdr(xdr, req, &hdr);
2322 encode_sequence(xdr, &args->seq_args, &hdr);
2323 encode_putfh(xdr, args->fh, &hdr);
2324 encode_read(xdr, args, &hdr);
2326 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2327 args->pages, args->pgbase, args->count);
2328 req->rq_rcv_buf.flags |= XDRBUF_READ;
2333 * Encode an SETATTR request
2335 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2336 struct nfs_setattrargs *args)
2338 struct compound_hdr hdr = {
2339 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2342 encode_compound_hdr(xdr, req, &hdr);
2343 encode_sequence(xdr, &args->seq_args, &hdr);
2344 encode_putfh(xdr, args->fh, &hdr);
2345 encode_setattr(xdr, args, args->server, &hdr);
2346 encode_getfattr(xdr, args->bitmask, &hdr);
2351 * Encode a GETACL request
2353 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2354 struct nfs_getaclargs *args)
2356 struct compound_hdr hdr = {
2357 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2361 encode_compound_hdr(xdr, req, &hdr);
2362 encode_sequence(xdr, &args->seq_args, &hdr);
2363 encode_putfh(xdr, args->fh, &hdr);
2364 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2365 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2367 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2368 args->acl_pages, args->acl_pgbase, args->acl_len);
2373 * Encode a WRITE request
2375 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2376 struct nfs_writeargs *args)
2378 struct compound_hdr hdr = {
2379 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2382 encode_compound_hdr(xdr, req, &hdr);
2383 encode_sequence(xdr, &args->seq_args, &hdr);
2384 encode_putfh(xdr, args->fh, &hdr);
2385 encode_write(xdr, args, &hdr);
2386 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2388 encode_getfattr(xdr, args->bitmask, &hdr);
2395 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2396 struct nfs_writeargs *args)
2398 struct compound_hdr hdr = {
2399 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2402 encode_compound_hdr(xdr, req, &hdr);
2403 encode_sequence(xdr, &args->seq_args, &hdr);
2404 encode_putfh(xdr, args->fh, &hdr);
2405 encode_commit(xdr, args, &hdr);
2407 encode_getfattr(xdr, args->bitmask, &hdr);
2414 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2415 struct nfs4_fsinfo_arg *args)
2417 struct compound_hdr hdr = {
2418 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2421 encode_compound_hdr(xdr, req, &hdr);
2422 encode_sequence(xdr, &args->seq_args, &hdr);
2423 encode_putfh(xdr, args->fh, &hdr);
2424 encode_fsinfo(xdr, args->bitmask, &hdr);
2429 * a PATHCONF request
2431 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2432 const struct nfs4_pathconf_arg *args)
2434 struct compound_hdr hdr = {
2435 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2438 encode_compound_hdr(xdr, req, &hdr);
2439 encode_sequence(xdr, &args->seq_args, &hdr);
2440 encode_putfh(xdr, args->fh, &hdr);
2441 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2449 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2450 const struct nfs4_statfs_arg *args)
2452 struct compound_hdr hdr = {
2453 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2456 encode_compound_hdr(xdr, req, &hdr);
2457 encode_sequence(xdr, &args->seq_args, &hdr);
2458 encode_putfh(xdr, args->fh, &hdr);
2459 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2460 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2465 * GETATTR_BITMAP request
2467 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2468 struct xdr_stream *xdr,
2469 struct nfs4_server_caps_arg *args)
2471 struct compound_hdr hdr = {
2472 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2475 encode_compound_hdr(xdr, req, &hdr);
2476 encode_sequence(xdr, &args->seq_args, &hdr);
2477 encode_putfh(xdr, args->fhandle, &hdr);
2478 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2479 FATTR4_WORD0_LINK_SUPPORT|
2480 FATTR4_WORD0_SYMLINK_SUPPORT|
2481 FATTR4_WORD0_ACLSUPPORT, &hdr);
2488 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2489 struct nfs_client *clp)
2491 struct compound_hdr hdr = {
2495 encode_compound_hdr(xdr, req, &hdr);
2496 encode_renew(xdr, clp, &hdr);
2501 * a SETCLIENTID request
2503 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2504 struct xdr_stream *xdr,
2505 struct nfs4_setclientid *sc)
2507 struct compound_hdr hdr = {
2511 encode_compound_hdr(xdr, req, &hdr);
2512 encode_setclientid(xdr, sc, &hdr);
2517 * a SETCLIENTID_CONFIRM request
2519 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2520 struct xdr_stream *xdr,
2521 struct nfs4_setclientid_res *arg)
2523 struct compound_hdr hdr = {
2526 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2528 encode_compound_hdr(xdr, req, &hdr);
2529 encode_setclientid_confirm(xdr, arg, &hdr);
2530 encode_putrootfh(xdr, &hdr);
2531 encode_fsinfo(xdr, lease_bitmap, &hdr);
2536 * DELEGRETURN request
2538 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2539 struct xdr_stream *xdr,
2540 const struct nfs4_delegreturnargs *args)
2542 struct compound_hdr hdr = {
2543 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2546 encode_compound_hdr(xdr, req, &hdr);
2547 encode_sequence(xdr, &args->seq_args, &hdr);
2548 encode_putfh(xdr, args->fhandle, &hdr);
2549 encode_delegreturn(xdr, args->stateid, &hdr);
2550 encode_getfattr(xdr, args->bitmask, &hdr);
2555 * Encode FS_LOCATIONS request
2557 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2558 struct xdr_stream *xdr,
2559 struct nfs4_fs_locations_arg *args)
2561 struct compound_hdr hdr = {
2562 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2566 encode_compound_hdr(xdr, req, &hdr);
2567 encode_sequence(xdr, &args->seq_args, &hdr);
2568 encode_putfh(xdr, args->dir_fh, &hdr);
2569 encode_lookup(xdr, args->name, &hdr);
2570 replen = hdr.replen; /* get the attribute into args->page */
2571 encode_fs_locations(xdr, args->bitmask, &hdr);
2573 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2579 * Encode SECINFO request
2581 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2582 struct xdr_stream *xdr,
2583 struct nfs4_secinfo_arg *args)
2585 struct compound_hdr hdr = {
2586 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2589 encode_compound_hdr(xdr, req, &hdr);
2590 encode_sequence(xdr, &args->seq_args, &hdr);
2591 encode_putfh(xdr, args->dir_fh, &hdr);
2592 encode_secinfo(xdr, args->name, &hdr);
2596 #if defined(CONFIG_NFS_V4_1)
2598 * EXCHANGE_ID request
2600 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2601 struct xdr_stream *xdr,
2602 struct nfs41_exchange_id_args *args)
2604 struct compound_hdr hdr = {
2605 .minorversion = args->client->cl_mvops->minor_version,
2608 encode_compound_hdr(xdr, req, &hdr);
2609 encode_exchange_id(xdr, args, &hdr);
2614 * a CREATE_SESSION request
2616 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2617 struct xdr_stream *xdr,
2618 struct nfs41_create_session_args *args)
2620 struct compound_hdr hdr = {
2621 .minorversion = args->client->cl_mvops->minor_version,
2624 encode_compound_hdr(xdr, req, &hdr);
2625 encode_create_session(xdr, args, &hdr);
2630 * a DESTROY_SESSION request
2632 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2633 struct xdr_stream *xdr,
2634 struct nfs4_session *session)
2636 struct compound_hdr hdr = {
2637 .minorversion = session->clp->cl_mvops->minor_version,
2640 encode_compound_hdr(xdr, req, &hdr);
2641 encode_destroy_session(xdr, session, &hdr);
2646 * a SEQUENCE request
2648 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2649 struct nfs4_sequence_args *args)
2651 struct compound_hdr hdr = {
2652 .minorversion = nfs4_xdr_minorversion(args),
2655 encode_compound_hdr(xdr, req, &hdr);
2656 encode_sequence(xdr, args, &hdr);
2661 * a GET_LEASE_TIME request
2663 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2664 struct xdr_stream *xdr,
2665 struct nfs4_get_lease_time_args *args)
2667 struct compound_hdr hdr = {
2668 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2670 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2672 encode_compound_hdr(xdr, req, &hdr);
2673 encode_sequence(xdr, &args->la_seq_args, &hdr);
2674 encode_putrootfh(xdr, &hdr);
2675 encode_fsinfo(xdr, lease_bitmap, &hdr);
2680 * a RECLAIM_COMPLETE request
2682 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2683 struct xdr_stream *xdr,
2684 struct nfs41_reclaim_complete_args *args)
2686 struct compound_hdr hdr = {
2687 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2690 encode_compound_hdr(xdr, req, &hdr);
2691 encode_sequence(xdr, &args->seq_args, &hdr);
2692 encode_reclaim_complete(xdr, args, &hdr);
2697 * Encode GETDEVICEINFO request
2699 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2700 struct xdr_stream *xdr,
2701 struct nfs4_getdeviceinfo_args *args)
2703 struct compound_hdr hdr = {
2704 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2707 encode_compound_hdr(xdr, req, &hdr);
2708 encode_sequence(xdr, &args->seq_args, &hdr);
2709 encode_getdeviceinfo(xdr, args, &hdr);
2711 /* set up reply kvec. Subtract notification bitmap max size (2)
2712 * so that notification bitmap is put in xdr_buf tail */
2713 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2714 args->pdev->pages, args->pdev->pgbase,
2721 * Encode LAYOUTGET request
2723 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2724 struct xdr_stream *xdr,
2725 struct nfs4_layoutget_args *args)
2727 struct compound_hdr hdr = {
2728 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2731 encode_compound_hdr(xdr, req, &hdr);
2732 encode_sequence(xdr, &args->seq_args, &hdr);
2733 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2734 encode_layoutget(xdr, args, &hdr);
2736 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2737 args->layout.pages, 0, args->layout.pglen);
2743 * Encode LAYOUTCOMMIT request
2745 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2746 struct xdr_stream *xdr,
2747 struct nfs4_layoutcommit_args *args)
2749 struct compound_hdr hdr = {
2750 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2753 encode_compound_hdr(xdr, req, &hdr);
2754 encode_sequence(xdr, &args->seq_args, &hdr);
2755 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2756 encode_layoutcommit(xdr, args, &hdr);
2757 encode_getfattr(xdr, args->bitmask, &hdr);
2762 * Encode LAYOUTRETURN request
2764 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2765 struct xdr_stream *xdr,
2766 struct nfs4_layoutreturn_args *args)
2768 struct compound_hdr hdr = {
2769 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2772 encode_compound_hdr(xdr, req, &hdr);
2773 encode_sequence(xdr, &args->seq_args, &hdr);
2774 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2775 encode_layoutreturn(xdr, args, &hdr);
2778 #endif /* CONFIG_NFS_V4_1 */
2780 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2782 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2783 "Remaining buffer length is %tu words.\n",
2784 func, xdr->end - xdr->p);
2787 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2791 p = xdr_inline_decode(xdr, 4);
2794 *len = be32_to_cpup(p);
2795 p = xdr_inline_decode(xdr, *len);
2798 *string = (char *)p;
2801 print_overflow_msg(__func__, xdr);
2805 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2809 p = xdr_inline_decode(xdr, 8);
2812 hdr->status = be32_to_cpup(p++);
2813 hdr->taglen = be32_to_cpup(p);
2815 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2818 hdr->tag = (char *)p;
2819 p += XDR_QUADLEN(hdr->taglen);
2820 hdr->nops = be32_to_cpup(p);
2821 if (unlikely(hdr->nops < 1))
2822 return nfs4_stat_to_errno(hdr->status);
2825 print_overflow_msg(__func__, xdr);
2829 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2835 p = xdr_inline_decode(xdr, 8);
2838 opnum = be32_to_cpup(p++);
2839 if (opnum != expected) {
2840 dprintk("nfs: Server returned operation"
2841 " %d but we issued a request for %d\n",
2845 nfserr = be32_to_cpup(p);
2846 if (nfserr != NFS_OK)
2847 return nfs4_stat_to_errno(nfserr);
2850 print_overflow_msg(__func__, xdr);
2855 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2858 unsigned int strlen;
2861 p = xdr_inline_decode(xdr, 12);
2863 return decode_opaque_inline(xdr, &strlen, &str);
2864 print_overflow_msg(__func__, xdr);
2868 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2873 p = xdr_inline_decode(xdr, 4);
2876 bmlen = be32_to_cpup(p);
2878 bitmap[0] = bitmap[1] = 0;
2879 p = xdr_inline_decode(xdr, (bmlen << 2));
2883 bitmap[0] = be32_to_cpup(p++);
2885 bitmap[1] = be32_to_cpup(p);
2889 print_overflow_msg(__func__, xdr);
2893 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2897 p = xdr_inline_decode(xdr, 4);
2900 *attrlen = be32_to_cpup(p);
2904 print_overflow_msg(__func__, xdr);
2908 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2910 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2912 ret = decode_attr_bitmap(xdr, bitmask);
2913 if (unlikely(ret < 0))
2915 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2917 bitmask[0] = bitmask[1] = 0;
2918 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2922 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2928 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2930 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2931 p = xdr_inline_decode(xdr, 4);
2934 *type = be32_to_cpup(p);
2935 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2936 dprintk("%s: bad type %d\n", __func__, *type);
2939 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2940 ret = NFS_ATTR_FATTR_TYPE;
2942 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2945 print_overflow_msg(__func__, xdr);
2949 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2955 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2957 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2958 p = xdr_inline_decode(xdr, 8);
2961 xdr_decode_hyper(p, change);
2962 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2963 ret = NFS_ATTR_FATTR_CHANGE;
2965 dprintk("%s: change attribute=%Lu\n", __func__,
2966 (unsigned long long)*change);
2969 print_overflow_msg(__func__, xdr);
2973 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2979 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2981 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2982 p = xdr_inline_decode(xdr, 8);
2985 xdr_decode_hyper(p, size);
2986 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2987 ret = NFS_ATTR_FATTR_SIZE;
2989 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2992 print_overflow_msg(__func__, xdr);
2996 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3001 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3003 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3004 p = xdr_inline_decode(xdr, 4);
3007 *res = be32_to_cpup(p);
3008 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3010 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3013 print_overflow_msg(__func__, xdr);
3017 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3022 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3024 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3025 p = xdr_inline_decode(xdr, 4);
3028 *res = be32_to_cpup(p);
3029 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3031 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3034 print_overflow_msg(__func__, xdr);
3038 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3045 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3047 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3048 p = xdr_inline_decode(xdr, 16);
3051 p = xdr_decode_hyper(p, &fsid->major);
3052 xdr_decode_hyper(p, &fsid->minor);
3053 bitmap[0] &= ~FATTR4_WORD0_FSID;
3054 ret = NFS_ATTR_FATTR_FSID;
3056 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3057 (unsigned long long)fsid->major,
3058 (unsigned long long)fsid->minor);
3061 print_overflow_msg(__func__, xdr);
3065 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3070 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3072 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3073 p = xdr_inline_decode(xdr, 4);
3076 *res = be32_to_cpup(p);
3077 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3079 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3082 print_overflow_msg(__func__, xdr);
3086 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
3090 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3092 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3093 p = xdr_inline_decode(xdr, 4);
3096 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3097 return -be32_to_cpup(p);
3101 print_overflow_msg(__func__, xdr);
3105 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3111 memset(fh, 0, sizeof(*fh));
3113 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3115 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3116 p = xdr_inline_decode(xdr, 4);
3119 len = be32_to_cpup(p);
3120 if (len > NFS4_FHSIZE)
3122 p = xdr_inline_decode(xdr, len);
3126 memcpy(fh->data, p, len);
3129 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3133 print_overflow_msg(__func__, xdr);
3137 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3141 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3142 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3144 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3145 p = xdr_inline_decode(xdr, 4);
3148 *res = be32_to_cpup(p);
3149 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3151 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3154 print_overflow_msg(__func__, xdr);
3158 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3164 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3166 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3167 p = xdr_inline_decode(xdr, 8);
3170 xdr_decode_hyper(p, fileid);
3171 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3172 ret = NFS_ATTR_FATTR_FILEID;
3174 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3177 print_overflow_msg(__func__, xdr);
3181 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3187 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3189 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3190 p = xdr_inline_decode(xdr, 8);
3193 xdr_decode_hyper(p, fileid);
3194 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3195 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3197 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3200 print_overflow_msg(__func__, xdr);
3204 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3210 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3212 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3213 p = xdr_inline_decode(xdr, 8);
3216 xdr_decode_hyper(p, res);
3217 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3219 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3222 print_overflow_msg(__func__, xdr);
3226 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3232 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3234 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3235 p = xdr_inline_decode(xdr, 8);
3238 xdr_decode_hyper(p, res);
3239 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3241 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3244 print_overflow_msg(__func__, xdr);
3248 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3254 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3256 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3257 p = xdr_inline_decode(xdr, 8);
3260 xdr_decode_hyper(p, res);
3261 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3263 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3266 print_overflow_msg(__func__, xdr);
3270 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3276 p = xdr_inline_decode(xdr, 4);
3279 n = be32_to_cpup(p);
3283 path->ncomponents = 0;
3284 while (path->ncomponents < n) {
3285 struct nfs4_string *component = &path->components[path->ncomponents];
3286 status = decode_opaque_inline(xdr, &component->len, &component->data);
3287 if (unlikely(status != 0))
3289 if (path->ncomponents != n)
3291 dprintk("%s", component->data);
3292 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3293 path->ncomponents++;
3295 dprintk("cannot parse %d components in path\n", n);
3303 /* a root pathname is sent as a zero component4 */
3304 path->ncomponents = 1;
3305 path->components[0].len=0;
3306 path->components[0].data=NULL;
3307 dprintk("path /\n");
3310 dprintk(" status %d", status);
3314 print_overflow_msg(__func__, xdr);
3318 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3324 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3327 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3329 dprintk("%s: fsroot ", __func__);
3330 status = decode_pathname(xdr, &res->fs_path);
3331 if (unlikely(status != 0))
3333 p = xdr_inline_decode(xdr, 4);
3336 n = be32_to_cpup(p);
3339 res->nlocations = 0;
3340 while (res->nlocations < n) {
3342 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3344 p = xdr_inline_decode(xdr, 4);
3347 m = be32_to_cpup(p);
3350 dprintk("%s: servers ", __func__);
3351 while (loc->nservers < m) {
3352 struct nfs4_string *server = &loc->servers[loc->nservers];
3353 status = decode_opaque_inline(xdr, &server->len, &server->data);
3354 if (unlikely(status != 0))
3356 dprintk("%s ", server->data);
3357 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3361 dprintk("%s: using first %u of %u servers "
3362 "returned for location %u\n",
3364 NFS4_FS_LOCATION_MAXSERVERS,
3365 m, res->nlocations);
3366 for (i = loc->nservers; i < m; i++) {
3369 status = decode_opaque_inline(xdr, &len, &data);
3370 if (unlikely(status != 0))
3375 status = decode_pathname(xdr, &loc->rootpath);
3376 if (unlikely(status != 0))
3378 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3381 if (res->nlocations != 0)
3382 status = NFS_ATTR_FATTR_V4_REFERRAL;
3384 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3387 print_overflow_msg(__func__, xdr);
3393 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3399 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3401 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3402 p = xdr_inline_decode(xdr, 8);
3405 xdr_decode_hyper(p, res);
3406 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3408 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3411 print_overflow_msg(__func__, xdr);
3415 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3421 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3423 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3424 p = xdr_inline_decode(xdr, 4);
3427 *maxlink = be32_to_cpup(p);
3428 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3430 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3433 print_overflow_msg(__func__, xdr);
3437 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3443 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3445 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3446 p = xdr_inline_decode(xdr, 4);
3449 *maxname = be32_to_cpup(p);
3450 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3452 dprintk("%s: maxname=%u\n", __func__, *maxname);
3455 print_overflow_msg(__func__, xdr);
3459 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3465 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3467 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3469 p = xdr_inline_decode(xdr, 8);
3472 xdr_decode_hyper(p, &maxread);
3473 if (maxread > 0x7FFFFFFF)
3474 maxread = 0x7FFFFFFF;
3475 *res = (uint32_t)maxread;
3476 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3478 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3481 print_overflow_msg(__func__, xdr);
3485 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3491 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3493 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3495 p = xdr_inline_decode(xdr, 8);
3498 xdr_decode_hyper(p, &maxwrite);
3499 if (maxwrite > 0x7FFFFFFF)
3500 maxwrite = 0x7FFFFFFF;
3501 *res = (uint32_t)maxwrite;
3502 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3504 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3507 print_overflow_msg(__func__, xdr);
3511 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3518 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3520 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3521 p = xdr_inline_decode(xdr, 4);
3524 tmp = be32_to_cpup(p);
3525 *mode = tmp & ~S_IFMT;
3526 bitmap[1] &= ~FATTR4_WORD1_MODE;
3527 ret = NFS_ATTR_FATTR_MODE;
3529 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3532 print_overflow_msg(__func__, xdr);
3536 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3542 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3544 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3545 p = xdr_inline_decode(xdr, 4);
3548 *nlink = be32_to_cpup(p);
3549 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3550 ret = NFS_ATTR_FATTR_NLINK;
3552 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3555 print_overflow_msg(__func__, xdr);
3559 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3560 const struct nfs_server *server, uint32_t *uid, int may_sleep)
3567 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3569 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3570 p = xdr_inline_decode(xdr, 4);
3573 len = be32_to_cpup(p);
3574 p = xdr_inline_decode(xdr, len);
3579 } else if (len < XDR_MAX_NETOBJ) {
3580 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3581 ret = NFS_ATTR_FATTR_OWNER;
3583 dprintk("%s: nfs_map_name_to_uid failed!\n",
3586 dprintk("%s: name too long (%u)!\n",
3588 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3590 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3593 print_overflow_msg(__func__, xdr);
3597 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3598 const struct nfs_server *server, uint32_t *gid, int may_sleep)
3605 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3607 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3608 p = xdr_inline_decode(xdr, 4);
3611 len = be32_to_cpup(p);
3612 p = xdr_inline_decode(xdr, len);
3617 } else if (len < XDR_MAX_NETOBJ) {
3618 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3619 ret = NFS_ATTR_FATTR_GROUP;
3621 dprintk("%s: nfs_map_group_to_gid failed!\n",
3624 dprintk("%s: name too long (%u)!\n",
3626 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3628 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3631 print_overflow_msg(__func__, xdr);
3635 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3637 uint32_t major = 0, minor = 0;
3642 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3644 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3647 p = xdr_inline_decode(xdr, 8);
3650 major = be32_to_cpup(p++);
3651 minor = be32_to_cpup(p);
3652 tmp = MKDEV(major, minor);
3653 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3655 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3656 ret = NFS_ATTR_FATTR_RDEV;
3658 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3661 print_overflow_msg(__func__, xdr);
3665 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3671 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3673 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3674 p = xdr_inline_decode(xdr, 8);
3677 xdr_decode_hyper(p, res);
3678 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3680 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3683 print_overflow_msg(__func__, xdr);
3687 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3693 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3695 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3696 p = xdr_inline_decode(xdr, 8);
3699 xdr_decode_hyper(p, res);
3700 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3702 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3705 print_overflow_msg(__func__, xdr);
3709 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3715 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3717 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3718 p = xdr_inline_decode(xdr, 8);
3721 xdr_decode_hyper(p, res);
3722 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3724 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3727 print_overflow_msg(__func__, xdr);
3731 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3737 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3739 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3740 p = xdr_inline_decode(xdr, 8);
3743 xdr_decode_hyper(p, used);
3744 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3745 ret = NFS_ATTR_FATTR_SPACE_USED;
3747 dprintk("%s: space used=%Lu\n", __func__,
3748 (unsigned long long)*used);
3751 print_overflow_msg(__func__, xdr);
3755 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3761 p = xdr_inline_decode(xdr, 12);
3764 p = xdr_decode_hyper(p, &sec);
3765 nsec = be32_to_cpup(p);
3766 time->tv_sec = (time_t)sec;
3767 time->tv_nsec = (long)nsec;
3770 print_overflow_msg(__func__, xdr);
3774 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3780 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3782 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3783 status = decode_attr_time(xdr, time);
3785 status = NFS_ATTR_FATTR_ATIME;
3786 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3788 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3792 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3798 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3800 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3801 status = decode_attr_time(xdr, time);
3803 status = NFS_ATTR_FATTR_CTIME;
3804 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3806 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3810 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
3811 struct timespec *time)
3817 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
3819 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
3820 status = decode_attr_time(xdr, time);
3821 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
3823 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
3824 (long)time->tv_nsec);
3828 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3834 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3836 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3837 status = decode_attr_time(xdr, time);
3839 status = NFS_ATTR_FATTR_MTIME;
3840 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3842 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3846 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3848 unsigned int attrwords = XDR_QUADLEN(attrlen);
3849 unsigned int nwords = xdr->p - savep;
3851 if (unlikely(attrwords != nwords)) {
3852 dprintk("%s: server returned incorrect attribute length: "
3856 (attrwords < nwords) ? '<' : '>',
3863 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3867 p = xdr_inline_decode(xdr, 20);
3870 cinfo->atomic = be32_to_cpup(p++);
3871 p = xdr_decode_hyper(p, &cinfo->before);
3872 xdr_decode_hyper(p, &cinfo->after);
3875 print_overflow_msg(__func__, xdr);
3879 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3885 status = decode_op_hdr(xdr, OP_ACCESS);
3888 p = xdr_inline_decode(xdr, 8);
3891 supp = be32_to_cpup(p++);
3892 acc = be32_to_cpup(p);
3893 access->supported = supp;
3894 access->access = acc;
3897 print_overflow_msg(__func__, xdr);
3901 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
3905 p = xdr_inline_decode(xdr, len);
3907 memcpy(buf, p, len);
3910 print_overflow_msg(__func__, xdr);
3914 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
3916 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
3919 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3923 status = decode_op_hdr(xdr, OP_CLOSE);
3925 nfs_increment_open_seqid(status, res->seqid);
3927 status = decode_stateid(xdr, &res->stateid);
3931 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
3933 return decode_opaque_fixed(xdr, verifier, 8);
3936 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3940 status = decode_op_hdr(xdr, OP_COMMIT);
3942 status = decode_verifier(xdr, res->verf->verifier);
3946 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3952 status = decode_op_hdr(xdr, OP_CREATE);
3955 if ((status = decode_change_info(xdr, cinfo)))
3957 p = xdr_inline_decode(xdr, 4);
3960 bmlen = be32_to_cpup(p);
3961 p = xdr_inline_decode(xdr, bmlen << 2);
3965 print_overflow_msg(__func__, xdr);
3969 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3972 uint32_t attrlen, bitmap[2] = {0};
3975 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3977 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3979 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3981 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3983 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3985 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3987 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3989 status = verify_attr_len(xdr, savep, attrlen);
3991 dprintk("%s: xdr returned %d!\n", __func__, -status);
3995 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3998 uint32_t attrlen, bitmap[2] = {0};
4001 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4003 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4005 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4008 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4010 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4012 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4014 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4016 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4018 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4021 status = verify_attr_len(xdr, savep, attrlen);
4023 dprintk("%s: xdr returned %d!\n", __func__, -status);
4027 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4030 uint32_t attrlen, bitmap[2] = {0};
4033 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4035 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4037 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4040 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4042 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4045 status = verify_attr_len(xdr, savep, attrlen);
4047 dprintk("%s: xdr returned %d!\n", __func__, -status);
4051 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4052 struct nfs_fattr *fattr, struct nfs_fh *fh,
4053 const struct nfs_server *server, int may_sleep)
4059 status = decode_attr_type(xdr, bitmap, &type);
4064 fattr->mode |= nfs_type2fmt[type];
4065 fattr->valid |= status;
4068 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4071 fattr->valid |= status;
4073 status = decode_attr_size(xdr, bitmap, &fattr->size);
4076 fattr->valid |= status;
4078 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4081 fattr->valid |= status;
4083 status = decode_attr_error(xdr, bitmap);
4084 if (status == -NFS4ERR_WRONGSEC) {
4085 nfs_fixup_secinfo_attributes(fattr, fh);
4091 status = decode_attr_filehandle(xdr, bitmap, fh);
4095 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4098 fattr->valid |= status;
4100 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
4101 struct nfs4_fs_locations,
4105 fattr->valid |= status;
4107 status = decode_attr_mode(xdr, bitmap, &fmode);
4111 fattr->mode |= fmode;
4112 fattr->valid |= status;
4115 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4118 fattr->valid |= status;
4120 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, may_sleep);
4123 fattr->valid |= status;
4125 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, may_sleep);
4128 fattr->valid |= status;
4130 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4133 fattr->valid |= status;
4135 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4138 fattr->valid |= status;
4140 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4143 fattr->valid |= status;
4145 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4148 fattr->valid |= status;
4150 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4153 fattr->valid |= status;
4155 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4158 fattr->valid |= status;
4161 dprintk("%s: xdr returned %d\n", __func__, -status);
4165 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4166 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
4173 status = decode_op_hdr(xdr, OP_GETATTR);
4177 status = decode_attr_bitmap(xdr, bitmap);
4181 status = decode_attr_length(xdr, &attrlen, &savep);
4185 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
4189 status = verify_attr_len(xdr, savep, attrlen);
4191 dprintk("%s: xdr returned %d\n", __func__, -status);
4195 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4196 const struct nfs_server *server, int may_sleep)
4198 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
4202 * Decode potentially multiple layout types. Currently we only support
4203 * one layout driver per file system.
4205 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4206 uint32_t *layouttype)
4211 p = xdr_inline_decode(xdr, 4);
4214 num = be32_to_cpup(p);
4216 /* pNFS is not supported by the underlying file system */
4222 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
4223 "per filesystem not supported\n", __func__);
4225 /* Decode and set first layout type, move xdr->p past unused types */
4226 p = xdr_inline_decode(xdr, num * 4);
4229 *layouttype = be32_to_cpup(p);
4232 print_overflow_msg(__func__, xdr);
4237 * The type of file system exported.
4238 * Note we must ensure that layouttype is set in any non-error case.
4240 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4241 uint32_t *layouttype)
4245 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4246 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4248 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4249 status = decode_first_pnfs_layout_type(xdr, layouttype);
4250 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4256 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4259 uint32_t attrlen, bitmap[2];
4262 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4264 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4266 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4269 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4271 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4273 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4275 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4277 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4278 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4280 fsinfo->wtpref = fsinfo->wtmax;
4281 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4284 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4288 status = verify_attr_len(xdr, savep, attrlen);
4290 dprintk("%s: xdr returned %d!\n", __func__, -status);
4294 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4300 /* Zero handle first to allow comparisons */
4301 memset(fh, 0, sizeof(*fh));
4303 status = decode_op_hdr(xdr, OP_GETFH);
4307 p = xdr_inline_decode(xdr, 4);
4310 len = be32_to_cpup(p);
4311 if (len > NFS4_FHSIZE)
4314 p = xdr_inline_decode(xdr, len);
4317 memcpy(fh->data, p, len);
4320 print_overflow_msg(__func__, xdr);
4324 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4328 status = decode_op_hdr(xdr, OP_LINK);
4331 return decode_change_info(xdr, cinfo);
4335 * We create the owner, so we know a proper owner.id length is 4.
4337 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4339 uint64_t offset, length, clientid;
4341 uint32_t namelen, type;
4343 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4346 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4347 p = xdr_decode_hyper(p, &length);
4348 type = be32_to_cpup(p++); /* 4 byte read */
4349 if (fl != NULL) { /* manipulate file lock */
4350 fl->fl_start = (loff_t)offset;
4351 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4352 if (length == ~(uint64_t)0)
4353 fl->fl_end = OFFSET_MAX;
4354 fl->fl_type = F_WRLCK;
4356 fl->fl_type = F_RDLCK;
4359 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4360 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4361 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4363 return -NFS4ERR_DENIED;
4365 print_overflow_msg(__func__, xdr);
4369 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4373 status = decode_op_hdr(xdr, OP_LOCK);
4377 status = decode_stateid(xdr, &res->stateid);
4378 if (unlikely(status))
4380 } else if (status == -NFS4ERR_DENIED)
4381 status = decode_lock_denied(xdr, NULL);
4382 if (res->open_seqid != NULL)
4383 nfs_increment_open_seqid(status, res->open_seqid);
4384 nfs_increment_lock_seqid(status, res->lock_seqid);
4389 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4392 status = decode_op_hdr(xdr, OP_LOCKT);
4393 if (status == -NFS4ERR_DENIED)
4394 return decode_lock_denied(xdr, res->denied);
4398 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4402 status = decode_op_hdr(xdr, OP_LOCKU);
4404 nfs_increment_lock_seqid(status, res->seqid);
4406 status = decode_stateid(xdr, &res->stateid);
4410 static int decode_release_lockowner(struct xdr_stream *xdr)
4412 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4415 static int decode_lookup(struct xdr_stream *xdr)
4417 return decode_op_hdr(xdr, OP_LOOKUP);
4420 /* This is too sick! */
4421 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4424 uint32_t limit_type, nblocks, blocksize;
4426 p = xdr_inline_decode(xdr, 12);
4429 limit_type = be32_to_cpup(p++);
4430 switch (limit_type) {
4432 xdr_decode_hyper(p, maxsize);
4435 nblocks = be32_to_cpup(p++);
4436 blocksize = be32_to_cpup(p);
4437 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4441 print_overflow_msg(__func__, xdr);
4445 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4448 uint32_t delegation_type;
4451 p = xdr_inline_decode(xdr, 4);
4454 delegation_type = be32_to_cpup(p);
4455 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4456 res->delegation_type = 0;
4459 status = decode_stateid(xdr, &res->delegation);
4460 if (unlikely(status))
4462 p = xdr_inline_decode(xdr, 4);
4465 res->do_recall = be32_to_cpup(p);
4467 switch (delegation_type) {
4468 case NFS4_OPEN_DELEGATE_READ:
4469 res->delegation_type = FMODE_READ;
4471 case NFS4_OPEN_DELEGATE_WRITE:
4472 res->delegation_type = FMODE_WRITE|FMODE_READ;
4473 if (decode_space_limit(xdr, &res->maxsize) < 0)
4476 return decode_ace(xdr, NULL, res->server->nfs_client);
4478 print_overflow_msg(__func__, xdr);
4482 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4485 uint32_t savewords, bmlen, i;
4488 status = decode_op_hdr(xdr, OP_OPEN);
4490 nfs_increment_open_seqid(status, res->seqid);
4492 status = decode_stateid(xdr, &res->stateid);
4493 if (unlikely(status))
4496 decode_change_info(xdr, &res->cinfo);
4498 p = xdr_inline_decode(xdr, 8);
4501 res->rflags = be32_to_cpup(p++);
4502 bmlen = be32_to_cpup(p);
4506 p = xdr_inline_decode(xdr, bmlen << 2);
4509 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4510 for (i = 0; i < savewords; ++i)
4511 res->attrset[i] = be32_to_cpup(p++);
4512 for (; i < NFS4_BITMAP_SIZE; i++)
4513 res->attrset[i] = 0;
4515 return decode_delegation(xdr, res);
4517 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4520 print_overflow_msg(__func__, xdr);
4524 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4528 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4530 nfs_increment_open_seqid(status, res->seqid);
4532 status = decode_stateid(xdr, &res->stateid);
4536 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4540 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4542 nfs_increment_open_seqid(status, res->seqid);
4544 status = decode_stateid(xdr, &res->stateid);
4548 static int decode_putfh(struct xdr_stream *xdr)
4550 return decode_op_hdr(xdr, OP_PUTFH);
4553 static int decode_putrootfh(struct xdr_stream *xdr)
4555 return decode_op_hdr(xdr, OP_PUTROOTFH);
4558 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4560 struct kvec *iov = req->rq_rcv_buf.head;
4562 uint32_t count, eof, recvd, hdrlen;
4565 status = decode_op_hdr(xdr, OP_READ);
4568 p = xdr_inline_decode(xdr, 8);
4571 eof = be32_to_cpup(p++);
4572 count = be32_to_cpup(p);
4573 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
4574 recvd = req->rq_rcv_buf.len - hdrlen;
4575 if (count > recvd) {
4576 dprintk("NFS: server cheating in read reply: "
4577 "count %u > recvd %u\n", count, recvd);
4581 xdr_read_pages(xdr, count);
4586 print_overflow_msg(__func__, xdr);
4590 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4592 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4593 struct kvec *iov = rcvbuf->head;
4595 u32 recvd, pglen = rcvbuf->page_len;
4598 status = decode_op_hdr(xdr, OP_READDIR);
4600 status = decode_verifier(xdr, readdir->verifier.data);
4601 if (unlikely(status))
4603 dprintk("%s: verifier = %08x:%08x\n",
4605 ((u32 *)readdir->verifier.data)[0],
4606 ((u32 *)readdir->verifier.data)[1]);
4609 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4610 recvd = rcvbuf->len - hdrlen;
4613 xdr_read_pages(xdr, pglen);
4619 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4621 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4622 struct kvec *iov = rcvbuf->head;
4628 status = decode_op_hdr(xdr, OP_READLINK);
4632 /* Convert length of symlink */
4633 p = xdr_inline_decode(xdr, 4);
4636 len = be32_to_cpup(p);
4637 if (len >= rcvbuf->page_len || len <= 0) {
4638 dprintk("nfs: server returned giant symlink!\n");
4639 return -ENAMETOOLONG;
4641 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4642 recvd = req->rq_rcv_buf.len - hdrlen;
4644 dprintk("NFS: server cheating in readlink reply: "
4645 "count %u > recvd %u\n", len, recvd);
4648 xdr_read_pages(xdr, len);
4650 * The XDR encode routine has set things up so that
4651 * the link text will be copied directly into the
4652 * buffer. We just have to do overflow-checking,
4653 * and and null-terminate the text (the VFS expects
4654 * null-termination).
4656 xdr_terminate_string(rcvbuf, len);
4659 print_overflow_msg(__func__, xdr);
4663 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4667 status = decode_op_hdr(xdr, OP_REMOVE);
4670 status = decode_change_info(xdr, cinfo);
4675 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4676 struct nfs4_change_info *new_cinfo)
4680 status = decode_op_hdr(xdr, OP_RENAME);
4683 if ((status = decode_change_info(xdr, old_cinfo)))
4685 status = decode_change_info(xdr, new_cinfo);
4690 static int decode_renew(struct xdr_stream *xdr)
4692 return decode_op_hdr(xdr, OP_RENEW);
4696 decode_restorefh(struct xdr_stream *xdr)
4698 return decode_op_hdr(xdr, OP_RESTOREFH);
4701 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4707 struct kvec *iov = req->rq_rcv_buf.head;
4711 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4713 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4715 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4718 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4720 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4724 /* We ignore &savep and don't do consistency checks on
4725 * the attr length. Let userspace figure it out.... */
4726 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4727 recvd = req->rq_rcv_buf.len - hdrlen;
4728 if (attrlen > recvd) {
4729 dprintk("NFS: server cheating in getattr"
4730 " acl reply: attrlen %u > recvd %u\n",
4734 xdr_read_pages(xdr, attrlen);
4737 status = -EOPNOTSUPP;
4744 decode_savefh(struct xdr_stream *xdr)
4746 return decode_op_hdr(xdr, OP_SAVEFH);
4749 static int decode_setattr(struct xdr_stream *xdr)
4755 status = decode_op_hdr(xdr, OP_SETATTR);
4758 p = xdr_inline_decode(xdr, 4);
4761 bmlen = be32_to_cpup(p);
4762 p = xdr_inline_decode(xdr, bmlen << 2);
4766 print_overflow_msg(__func__, xdr);
4770 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
4776 p = xdr_inline_decode(xdr, 8);
4779 opnum = be32_to_cpup(p++);
4780 if (opnum != OP_SETCLIENTID) {
4781 dprintk("nfs: decode_setclientid: Server returned operation"
4785 nfserr = be32_to_cpup(p);
4786 if (nfserr == NFS_OK) {
4787 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4790 p = xdr_decode_hyper(p, &res->clientid);
4791 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
4792 } else if (nfserr == NFSERR_CLID_INUSE) {
4795 /* skip netid string */
4796 p = xdr_inline_decode(xdr, 4);
4799 len = be32_to_cpup(p);
4800 p = xdr_inline_decode(xdr, len);
4804 /* skip uaddr string */
4805 p = xdr_inline_decode(xdr, 4);
4808 len = be32_to_cpup(p);
4809 p = xdr_inline_decode(xdr, len);
4812 return -NFSERR_CLID_INUSE;
4814 return nfs4_stat_to_errno(nfserr);
4818 print_overflow_msg(__func__, xdr);
4822 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4824 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4827 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4832 status = decode_op_hdr(xdr, OP_WRITE);
4836 p = xdr_inline_decode(xdr, 16);
4839 res->count = be32_to_cpup(p++);
4840 res->verf->committed = be32_to_cpup(p++);
4841 memcpy(res->verf->verifier, p, 8);
4844 print_overflow_msg(__func__, xdr);
4848 static int decode_delegreturn(struct xdr_stream *xdr)
4850 return decode_op_hdr(xdr, OP_DELEGRETURN);
4853 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
4857 p = xdr_inline_decode(xdr, 4);
4860 flavor->gss.sec_oid4.len = be32_to_cpup(p);
4861 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
4864 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
4867 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
4869 p = xdr_inline_decode(xdr, 8);
4872 flavor->gss.qop4 = be32_to_cpup(p++);
4873 flavor->gss.service = be32_to_cpup(p);
4878 print_overflow_msg(__func__, xdr);
4884 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
4886 struct nfs4_secinfo_flavor *sec_flavor;
4891 status = decode_op_hdr(xdr, OP_SECINFO);
4894 p = xdr_inline_decode(xdr, 4);
4898 res->flavors->num_flavors = 0;
4899 num_flavors = be32_to_cpup(p);
4901 for (i = 0; i < num_flavors; i++) {
4902 sec_flavor = &res->flavors->flavors[i];
4903 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
4906 p = xdr_inline_decode(xdr, 4);
4909 sec_flavor->flavor = be32_to_cpup(p);
4911 if (sec_flavor->flavor == RPC_AUTH_GSS) {
4912 status = decode_secinfo_gss(xdr, sec_flavor);
4916 res->flavors->num_flavors++;
4922 print_overflow_msg(__func__, xdr);
4926 #if defined(CONFIG_NFS_V4_1)
4927 static int decode_exchange_id(struct xdr_stream *xdr,
4928 struct nfs41_exchange_id_res *res)
4934 struct nfs_client *clp = res->client;
4936 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4940 p = xdr_inline_decode(xdr, 8);
4943 xdr_decode_hyper(p, &clp->cl_clientid);
4944 p = xdr_inline_decode(xdr, 12);
4947 clp->cl_seqid = be32_to_cpup(p++);
4948 clp->cl_exchange_flags = be32_to_cpup(p++);
4950 /* We ask for SP4_NONE */
4951 dummy = be32_to_cpup(p);
4952 if (dummy != SP4_NONE)
4955 /* Throw away minor_id */
4956 p = xdr_inline_decode(xdr, 8);
4960 /* Throw away Major id */
4961 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4962 if (unlikely(status))
4965 /* Throw away server_scope */
4966 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4967 if (unlikely(status))
4970 /* Throw away Implementation id array */
4971 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4972 if (unlikely(status))
4977 print_overflow_msg(__func__, xdr);
4981 static int decode_chan_attrs(struct xdr_stream *xdr,
4982 struct nfs4_channel_attrs *attrs)
4987 p = xdr_inline_decode(xdr, 28);
4990 attrs->headerpadsz = be32_to_cpup(p++);
4991 attrs->max_rqst_sz = be32_to_cpup(p++);
4992 attrs->max_resp_sz = be32_to_cpup(p++);
4993 attrs->max_resp_sz_cached = be32_to_cpup(p++);
4994 attrs->max_ops = be32_to_cpup(p++);
4995 attrs->max_reqs = be32_to_cpup(p++);
4996 nr_attrs = be32_to_cpup(p);
4997 if (unlikely(nr_attrs > 1)) {
4998 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4999 __func__, nr_attrs);
5002 if (nr_attrs == 1) {
5003 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5009 print_overflow_msg(__func__, xdr);
5013 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5015 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5018 static int decode_create_session(struct xdr_stream *xdr,
5019 struct nfs41_create_session_res *res)
5023 struct nfs_client *clp = res->client;
5024 struct nfs4_session *session = clp->cl_session;
5026 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5028 status = decode_sessionid(xdr, &session->sess_id);
5029 if (unlikely(status))
5033 p = xdr_inline_decode(xdr, 8);
5036 clp->cl_seqid = be32_to_cpup(p++);
5037 session->flags = be32_to_cpup(p);
5039 /* Channel attributes */
5040 status = decode_chan_attrs(xdr, &session->fc_attrs);
5042 status = decode_chan_attrs(xdr, &session->bc_attrs);
5045 print_overflow_msg(__func__, xdr);
5049 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5051 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5054 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5056 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5058 #endif /* CONFIG_NFS_V4_1 */
5060 static int decode_sequence(struct xdr_stream *xdr,
5061 struct nfs4_sequence_res *res,
5062 struct rpc_rqst *rqstp)
5064 #if defined(CONFIG_NFS_V4_1)
5065 struct nfs4_sessionid id;
5070 if (!res->sr_session)
5073 status = decode_op_hdr(xdr, OP_SEQUENCE);
5075 status = decode_sessionid(xdr, &id);
5076 if (unlikely(status))
5080 * If the server returns different values for sessionID, slotID or
5081 * sequence number, the server is looney tunes.
5083 status = -EREMOTEIO;
5085 if (memcmp(id.data, res->sr_session->sess_id.data,
5086 NFS4_MAX_SESSIONID_LEN)) {
5087 dprintk("%s Invalid session id\n", __func__);
5091 p = xdr_inline_decode(xdr, 20);
5096 dummy = be32_to_cpup(p++);
5097 if (dummy != res->sr_slot->seq_nr) {
5098 dprintk("%s Invalid sequence number\n", __func__);
5102 dummy = be32_to_cpup(p++);
5103 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5104 dprintk("%s Invalid slot id\n", __func__);
5107 /* highest slot id - currently not processed */
5108 dummy = be32_to_cpup(p++);
5109 /* target highest slot id - currently not processed */
5110 dummy = be32_to_cpup(p++);
5112 res->sr_status_flags = be32_to_cpup(p);
5115 res->sr_status = status;
5118 print_overflow_msg(__func__, xdr);
5121 #else /* CONFIG_NFS_V4_1 */
5123 #endif /* CONFIG_NFS_V4_1 */
5126 #if defined(CONFIG_NFS_V4_1)
5128 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5129 struct pnfs_device *pdev)
5135 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5137 if (status == -ETOOSMALL) {
5138 p = xdr_inline_decode(xdr, 4);
5141 pdev->mincount = be32_to_cpup(p);
5142 dprintk("%s: Min count too small. mincnt = %u\n",
5143 __func__, pdev->mincount);
5148 p = xdr_inline_decode(xdr, 8);
5151 type = be32_to_cpup(p++);
5152 if (type != pdev->layout_type) {
5153 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5154 __func__, pdev->layout_type, type);
5158 * Get the length of the opaque device_addr4. xdr_read_pages places
5159 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5160 * and places the remaining xdr data in xdr_buf->tail
5162 pdev->mincount = be32_to_cpup(p);
5163 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5165 /* Parse notification bitmap, verifying that it is zero. */
5166 p = xdr_inline_decode(xdr, 4);
5169 len = be32_to_cpup(p);
5173 p = xdr_inline_decode(xdr, 4 * len);
5176 for (i = 0; i < len; i++, p++) {
5177 if (be32_to_cpup(p)) {
5178 dprintk("%s: notifications not supported\n",
5186 print_overflow_msg(__func__, xdr);
5190 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5191 struct nfs4_layoutget_res *res)
5196 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5197 struct kvec *iov = rcvbuf->head;
5200 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5203 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
5206 res->return_on_close = be32_to_cpup(p++);
5207 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
5208 layout_count = be32_to_cpup(p);
5209 if (!layout_count) {
5210 dprintk("%s: server responded with empty layout array\n",
5215 p = xdr_inline_decode(xdr, 28);
5218 p = xdr_decode_hyper(p, &res->range.offset);
5219 p = xdr_decode_hyper(p, &res->range.length);
5220 res->range.iomode = be32_to_cpup(p++);
5221 res->type = be32_to_cpup(p++);
5222 res->layoutp->len = be32_to_cpup(p);
5224 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5226 (unsigned long)res->range.offset,
5227 (unsigned long)res->range.length,
5232 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
5233 recvd = req->rq_rcv_buf.len - hdrlen;
5234 if (res->layoutp->len > recvd) {
5235 dprintk("NFS: server cheating in layoutget reply: "
5236 "layout len %u > recvd %u\n",
5237 res->layoutp->len, recvd);
5241 xdr_read_pages(xdr, res->layoutp->len);
5243 if (layout_count > 1) {
5244 /* We only handle a length one array at the moment. Any
5245 * further entries are just ignored. Note that this means
5246 * the client may see a response that is less than the
5247 * minimum it requested.
5249 dprintk("%s: server responded with %d layouts, dropping tail\n",
5250 __func__, layout_count);
5255 print_overflow_msg(__func__, xdr);
5259 static int decode_layoutreturn(struct xdr_stream *xdr,
5260 struct nfs4_layoutreturn_res *res)
5265 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5268 p = xdr_inline_decode(xdr, 4);
5271 res->lrs_present = be32_to_cpup(p);
5272 if (res->lrs_present)
5273 status = decode_stateid(xdr, &res->stateid);
5276 print_overflow_msg(__func__, xdr);
5280 static int decode_layoutcommit(struct xdr_stream *xdr,
5281 struct rpc_rqst *req,
5282 struct nfs4_layoutcommit_res *res)
5288 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5292 p = xdr_inline_decode(xdr, 4);
5295 sizechanged = be32_to_cpup(p);
5298 /* throw away new size */
5299 p = xdr_inline_decode(xdr, 8);
5305 print_overflow_msg(__func__, xdr);
5308 #endif /* CONFIG_NFS_V4_1 */
5311 * END OF "GENERIC" DECODE ROUTINES.
5315 * Decode OPEN_DOWNGRADE response
5317 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5318 struct xdr_stream *xdr,
5319 struct nfs_closeres *res)
5321 struct compound_hdr hdr;
5324 status = decode_compound_hdr(xdr, &hdr);
5327 status = decode_sequence(xdr, &res->seq_res, rqstp);
5330 status = decode_putfh(xdr);
5333 status = decode_open_downgrade(xdr, res);
5336 decode_getfattr(xdr, res->fattr, res->server,
5337 !RPC_IS_ASYNC(rqstp->rq_task));
5343 * Decode ACCESS response
5345 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5346 struct nfs4_accessres *res)
5348 struct compound_hdr hdr;
5351 status = decode_compound_hdr(xdr, &hdr);
5354 status = decode_sequence(xdr, &res->seq_res, rqstp);
5357 status = decode_putfh(xdr);
5360 status = decode_access(xdr, res);
5363 decode_getfattr(xdr, res->fattr, res->server,
5364 !RPC_IS_ASYNC(rqstp->rq_task));
5370 * Decode LOOKUP response
5372 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5373 struct nfs4_lookup_res *res)
5375 struct compound_hdr hdr;
5378 status = decode_compound_hdr(xdr, &hdr);
5381 status = decode_sequence(xdr, &res->seq_res, rqstp);
5384 status = decode_putfh(xdr);
5387 status = decode_lookup(xdr);
5390 status = decode_getfh(xdr, res->fh);
5393 status = decode_getfattr(xdr, res->fattr, res->server
5394 ,!RPC_IS_ASYNC(rqstp->rq_task));
5400 * Decode LOOKUP_ROOT response
5402 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5403 struct xdr_stream *xdr,
5404 struct nfs4_lookup_res *res)
5406 struct compound_hdr hdr;
5409 status = decode_compound_hdr(xdr, &hdr);
5412 status = decode_sequence(xdr, &res->seq_res, rqstp);
5415 status = decode_putrootfh(xdr);
5418 status = decode_getfh(xdr, res->fh);
5420 status = decode_getfattr(xdr, res->fattr, res->server,
5421 !RPC_IS_ASYNC(rqstp->rq_task));
5427 * Decode REMOVE response
5429 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5430 struct nfs_removeres *res)
5432 struct compound_hdr hdr;
5435 status = decode_compound_hdr(xdr, &hdr);
5438 status = decode_sequence(xdr, &res->seq_res, rqstp);
5441 status = decode_putfh(xdr);
5444 status = decode_remove(xdr, &res->cinfo);
5447 decode_getfattr(xdr, res->dir_attr, res->server,
5448 !RPC_IS_ASYNC(rqstp->rq_task));
5454 * Decode RENAME response
5456 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5457 struct nfs_renameres *res)
5459 struct compound_hdr hdr;
5462 status = decode_compound_hdr(xdr, &hdr);
5465 status = decode_sequence(xdr, &res->seq_res, rqstp);
5468 status = decode_putfh(xdr);
5471 status = decode_savefh(xdr);
5474 status = decode_putfh(xdr);
5477 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
5480 /* Current FH is target directory */
5481 if (decode_getfattr(xdr, res->new_fattr, res->server,
5482 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5484 status = decode_restorefh(xdr);
5487 decode_getfattr(xdr, res->old_fattr, res->server,
5488 !RPC_IS_ASYNC(rqstp->rq_task));
5494 * Decode LINK response
5496 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5497 struct nfs4_link_res *res)
5499 struct compound_hdr hdr;
5502 status = decode_compound_hdr(xdr, &hdr);
5505 status = decode_sequence(xdr, &res->seq_res, rqstp);
5508 status = decode_putfh(xdr);
5511 status = decode_savefh(xdr);
5514 status = decode_putfh(xdr);
5517 status = decode_link(xdr, &res->cinfo);
5521 * Note order: OP_LINK leaves the directory as the current
5524 if (decode_getfattr(xdr, res->dir_attr, res->server,
5525 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5527 status = decode_restorefh(xdr);
5530 decode_getfattr(xdr, res->fattr, res->server,
5531 !RPC_IS_ASYNC(rqstp->rq_task));
5537 * Decode CREATE response
5539 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5540 struct nfs4_create_res *res)
5542 struct compound_hdr hdr;
5545 status = decode_compound_hdr(xdr, &hdr);
5548 status = decode_sequence(xdr, &res->seq_res, rqstp);
5551 status = decode_putfh(xdr);
5554 status = decode_savefh(xdr);
5557 status = decode_create(xdr, &res->dir_cinfo);
5560 status = decode_getfh(xdr, res->fh);
5563 if (decode_getfattr(xdr, res->fattr, res->server,
5564 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5566 status = decode_restorefh(xdr);
5569 decode_getfattr(xdr, res->dir_fattr, res->server,
5570 !RPC_IS_ASYNC(rqstp->rq_task));
5576 * Decode SYMLINK response
5578 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5579 struct nfs4_create_res *res)
5581 return nfs4_xdr_dec_create(rqstp, xdr, res);
5585 * Decode GETATTR response
5587 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5588 struct nfs4_getattr_res *res)
5590 struct compound_hdr hdr;
5593 status = decode_compound_hdr(xdr, &hdr);
5596 status = decode_sequence(xdr, &res->seq_res, rqstp);
5599 status = decode_putfh(xdr);
5602 status = decode_getfattr(xdr, res->fattr, res->server,
5603 !RPC_IS_ASYNC(rqstp->rq_task));
5609 * Encode an SETACL request
5611 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
5612 struct nfs_setaclargs *args)
5614 struct compound_hdr hdr = {
5615 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
5618 encode_compound_hdr(xdr, req, &hdr);
5619 encode_sequence(xdr, &args->seq_args, &hdr);
5620 encode_putfh(xdr, args->fh, &hdr);
5621 encode_setacl(xdr, args, &hdr);
5626 * Decode SETACL response
5629 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5630 struct nfs_setaclres *res)
5632 struct compound_hdr hdr;
5635 status = decode_compound_hdr(xdr, &hdr);
5638 status = decode_sequence(xdr, &res->seq_res, rqstp);
5641 status = decode_putfh(xdr);
5644 status = decode_setattr(xdr);
5650 * Decode GETACL response
5653 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5654 struct nfs_getaclres *res)
5656 struct compound_hdr hdr;
5659 status = decode_compound_hdr(xdr, &hdr);
5662 status = decode_sequence(xdr, &res->seq_res, rqstp);
5665 status = decode_putfh(xdr);
5668 status = decode_getacl(xdr, rqstp, &res->acl_len);
5675 * Decode CLOSE response
5677 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5678 struct nfs_closeres *res)
5680 struct compound_hdr hdr;
5683 status = decode_compound_hdr(xdr, &hdr);
5686 status = decode_sequence(xdr, &res->seq_res, rqstp);
5689 status = decode_putfh(xdr);
5692 status = decode_close(xdr, res);
5696 * Note: Server may do delete on close for this file
5697 * in which case the getattr call will fail with
5698 * an ESTALE error. Shouldn't be a problem,
5699 * though, since fattr->valid will remain unset.
5701 decode_getfattr(xdr, res->fattr, res->server,
5702 !RPC_IS_ASYNC(rqstp->rq_task));
5708 * Decode OPEN response
5710 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5711 struct nfs_openres *res)
5713 struct compound_hdr hdr;
5716 status = decode_compound_hdr(xdr, &hdr);
5719 status = decode_sequence(xdr, &res->seq_res, rqstp);
5722 status = decode_putfh(xdr);
5725 status = decode_savefh(xdr);
5728 status = decode_open(xdr, res);
5731 if (decode_getfh(xdr, &res->fh) != 0)
5733 if (decode_getfattr(xdr, res->f_attr, res->server,
5734 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5736 if (decode_restorefh(xdr) != 0)
5738 decode_getfattr(xdr, res->dir_attr, res->server,
5739 !RPC_IS_ASYNC(rqstp->rq_task));
5745 * Decode OPEN_CONFIRM response
5747 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
5748 struct xdr_stream *xdr,
5749 struct nfs_open_confirmres *res)
5751 struct compound_hdr hdr;
5754 status = decode_compound_hdr(xdr, &hdr);
5757 status = decode_putfh(xdr);
5760 status = decode_open_confirm(xdr, res);
5766 * Decode OPEN response
5768 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
5769 struct xdr_stream *xdr,
5770 struct nfs_openres *res)
5772 struct compound_hdr hdr;
5775 status = decode_compound_hdr(xdr, &hdr);
5778 status = decode_sequence(xdr, &res->seq_res, rqstp);
5781 status = decode_putfh(xdr);
5784 status = decode_open(xdr, res);
5787 decode_getfattr(xdr, res->f_attr, res->server,
5788 !RPC_IS_ASYNC(rqstp->rq_task));
5794 * Decode SETATTR response
5796 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
5797 struct xdr_stream *xdr,
5798 struct nfs_setattrres *res)
5800 struct compound_hdr hdr;
5803 status = decode_compound_hdr(xdr, &hdr);
5806 status = decode_sequence(xdr, &res->seq_res, rqstp);
5809 status = decode_putfh(xdr);
5812 status = decode_setattr(xdr);
5815 decode_getfattr(xdr, res->fattr, res->server,
5816 !RPC_IS_ASYNC(rqstp->rq_task));
5822 * Decode LOCK response
5824 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5825 struct nfs_lock_res *res)
5827 struct compound_hdr hdr;
5830 status = decode_compound_hdr(xdr, &hdr);
5833 status = decode_sequence(xdr, &res->seq_res, rqstp);
5836 status = decode_putfh(xdr);
5839 status = decode_lock(xdr, res);
5845 * Decode LOCKT response
5847 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5848 struct nfs_lockt_res *res)
5850 struct compound_hdr hdr;
5853 status = decode_compound_hdr(xdr, &hdr);
5856 status = decode_sequence(xdr, &res->seq_res, rqstp);
5859 status = decode_putfh(xdr);
5862 status = decode_lockt(xdr, res);
5868 * Decode LOCKU response
5870 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5871 struct nfs_locku_res *res)
5873 struct compound_hdr hdr;
5876 status = decode_compound_hdr(xdr, &hdr);
5879 status = decode_sequence(xdr, &res->seq_res, rqstp);
5882 status = decode_putfh(xdr);
5885 status = decode_locku(xdr, res);
5890 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
5891 struct xdr_stream *xdr, void *dummy)
5893 struct compound_hdr hdr;
5896 status = decode_compound_hdr(xdr, &hdr);
5898 status = decode_release_lockowner(xdr);
5903 * Decode READLINK response
5905 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
5906 struct xdr_stream *xdr,
5907 struct nfs4_readlink_res *res)
5909 struct compound_hdr hdr;
5912 status = decode_compound_hdr(xdr, &hdr);
5915 status = decode_sequence(xdr, &res->seq_res, rqstp);
5918 status = decode_putfh(xdr);
5921 status = decode_readlink(xdr, rqstp);
5927 * Decode READDIR response
5929 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5930 struct nfs4_readdir_res *res)
5932 struct compound_hdr hdr;
5935 status = decode_compound_hdr(xdr, &hdr);
5938 status = decode_sequence(xdr, &res->seq_res, rqstp);
5941 status = decode_putfh(xdr);
5944 status = decode_readdir(xdr, rqstp, res);
5950 * Decode Read response
5952 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5953 struct nfs_readres *res)
5955 struct compound_hdr hdr;
5958 status = decode_compound_hdr(xdr, &hdr);
5961 status = decode_sequence(xdr, &res->seq_res, rqstp);
5964 status = decode_putfh(xdr);
5967 status = decode_read(xdr, rqstp, res);
5969 status = res->count;
5975 * Decode WRITE response
5977 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5978 struct nfs_writeres *res)
5980 struct compound_hdr hdr;
5983 status = decode_compound_hdr(xdr, &hdr);
5986 status = decode_sequence(xdr, &res->seq_res, rqstp);
5989 status = decode_putfh(xdr);
5992 status = decode_write(xdr, res);
5996 decode_getfattr(xdr, res->fattr, res->server,
5997 !RPC_IS_ASYNC(rqstp->rq_task));
5999 status = res->count;
6005 * Decode COMMIT response
6007 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6008 struct nfs_writeres *res)
6010 struct compound_hdr hdr;
6013 status = decode_compound_hdr(xdr, &hdr);
6016 status = decode_sequence(xdr, &res->seq_res, rqstp);
6019 status = decode_putfh(xdr);
6022 status = decode_commit(xdr, res);
6026 decode_getfattr(xdr, res->fattr, res->server,
6027 !RPC_IS_ASYNC(rqstp->rq_task));
6033 * Decode FSINFO response
6035 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6036 struct nfs4_fsinfo_res *res)
6038 struct compound_hdr hdr;
6041 status = decode_compound_hdr(xdr, &hdr);
6043 status = decode_sequence(xdr, &res->seq_res, req);
6045 status = decode_putfh(xdr);
6047 status = decode_fsinfo(xdr, res->fsinfo);
6052 * Decode PATHCONF response
6054 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6055 struct nfs4_pathconf_res *res)
6057 struct compound_hdr hdr;
6060 status = decode_compound_hdr(xdr, &hdr);
6062 status = decode_sequence(xdr, &res->seq_res, req);
6064 status = decode_putfh(xdr);
6066 status = decode_pathconf(xdr, res->pathconf);
6071 * Decode STATFS response
6073 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6074 struct nfs4_statfs_res *res)
6076 struct compound_hdr hdr;
6079 status = decode_compound_hdr(xdr, &hdr);
6081 status = decode_sequence(xdr, &res->seq_res, req);
6083 status = decode_putfh(xdr);
6085 status = decode_statfs(xdr, res->fsstat);
6090 * Decode GETATTR_BITMAP response
6092 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6093 struct xdr_stream *xdr,
6094 struct nfs4_server_caps_res *res)
6096 struct compound_hdr hdr;
6099 status = decode_compound_hdr(xdr, &hdr);
6102 status = decode_sequence(xdr, &res->seq_res, req);
6105 status = decode_putfh(xdr);
6108 status = decode_server_caps(xdr, res);
6114 * Decode RENEW response
6116 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6119 struct compound_hdr hdr;
6122 status = decode_compound_hdr(xdr, &hdr);
6124 status = decode_renew(xdr);
6129 * Decode SETCLIENTID response
6131 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6132 struct xdr_stream *xdr,
6133 struct nfs4_setclientid_res *res)
6135 struct compound_hdr hdr;
6138 status = decode_compound_hdr(xdr, &hdr);
6140 status = decode_setclientid(xdr, res);
6145 * Decode SETCLIENTID_CONFIRM response
6147 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6148 struct xdr_stream *xdr,
6149 struct nfs_fsinfo *fsinfo)
6151 struct compound_hdr hdr;
6154 status = decode_compound_hdr(xdr, &hdr);
6156 status = decode_setclientid_confirm(xdr);
6158 status = decode_putrootfh(xdr);
6160 status = decode_fsinfo(xdr, fsinfo);
6165 * Decode DELEGRETURN response
6167 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6168 struct xdr_stream *xdr,
6169 struct nfs4_delegreturnres *res)
6171 struct compound_hdr hdr;
6174 status = decode_compound_hdr(xdr, &hdr);
6177 status = decode_sequence(xdr, &res->seq_res, rqstp);
6180 status = decode_putfh(xdr);
6183 status = decode_delegreturn(xdr);
6186 decode_getfattr(xdr, res->fattr, res->server,
6187 !RPC_IS_ASYNC(rqstp->rq_task));
6193 * Decode FS_LOCATIONS response
6195 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6196 struct xdr_stream *xdr,
6197 struct nfs4_fs_locations_res *res)
6199 struct compound_hdr hdr;
6202 status = decode_compound_hdr(xdr, &hdr);
6205 status = decode_sequence(xdr, &res->seq_res, req);
6208 status = decode_putfh(xdr);
6211 status = decode_lookup(xdr);
6214 xdr_enter_page(xdr, PAGE_SIZE);
6215 status = decode_getfattr(xdr, &res->fs_locations->fattr,
6216 res->fs_locations->server,
6217 !RPC_IS_ASYNC(req->rq_task));
6223 * Decode SECINFO response
6225 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6226 struct xdr_stream *xdr,
6227 struct nfs4_secinfo_res *res)
6229 struct compound_hdr hdr;
6232 status = decode_compound_hdr(xdr, &hdr);
6235 status = decode_sequence(xdr, &res->seq_res, rqstp);
6238 status = decode_putfh(xdr);
6241 status = decode_secinfo(xdr, res);
6248 #if defined(CONFIG_NFS_V4_1)
6250 * Decode EXCHANGE_ID response
6252 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6253 struct xdr_stream *xdr,
6256 struct compound_hdr hdr;
6259 status = decode_compound_hdr(xdr, &hdr);
6261 status = decode_exchange_id(xdr, res);
6266 * Decode CREATE_SESSION response
6268 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6269 struct xdr_stream *xdr,
6270 struct nfs41_create_session_res *res)
6272 struct compound_hdr hdr;
6275 status = decode_compound_hdr(xdr, &hdr);
6277 status = decode_create_session(xdr, res);
6282 * Decode DESTROY_SESSION response
6284 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6285 struct xdr_stream *xdr,
6288 struct compound_hdr hdr;
6291 status = decode_compound_hdr(xdr, &hdr);
6293 status = decode_destroy_session(xdr, res);
6298 * Decode SEQUENCE response
6300 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6301 struct xdr_stream *xdr,
6302 struct nfs4_sequence_res *res)
6304 struct compound_hdr hdr;
6307 status = decode_compound_hdr(xdr, &hdr);
6309 status = decode_sequence(xdr, res, rqstp);
6314 * Decode GET_LEASE_TIME response
6316 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6317 struct xdr_stream *xdr,
6318 struct nfs4_get_lease_time_res *res)
6320 struct compound_hdr hdr;
6323 status = decode_compound_hdr(xdr, &hdr);
6325 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6327 status = decode_putrootfh(xdr);
6329 status = decode_fsinfo(xdr, res->lr_fsinfo);
6334 * Decode RECLAIM_COMPLETE response
6336 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6337 struct xdr_stream *xdr,
6338 struct nfs41_reclaim_complete_res *res)
6340 struct compound_hdr hdr;
6343 status = decode_compound_hdr(xdr, &hdr);
6345 status = decode_sequence(xdr, &res->seq_res, rqstp);
6347 status = decode_reclaim_complete(xdr, (void *)NULL);
6352 * Decode GETDEVINFO response
6354 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6355 struct xdr_stream *xdr,
6356 struct nfs4_getdeviceinfo_res *res)
6358 struct compound_hdr hdr;
6361 status = decode_compound_hdr(xdr, &hdr);
6364 status = decode_sequence(xdr, &res->seq_res, rqstp);
6367 status = decode_getdeviceinfo(xdr, res->pdev);
6373 * Decode LAYOUTGET response
6375 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6376 struct xdr_stream *xdr,
6377 struct nfs4_layoutget_res *res)
6379 struct compound_hdr hdr;
6382 status = decode_compound_hdr(xdr, &hdr);
6385 status = decode_sequence(xdr, &res->seq_res, rqstp);
6388 status = decode_putfh(xdr);
6391 status = decode_layoutget(xdr, rqstp, res);
6397 * Decode LAYOUTRETURN response
6399 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6400 struct xdr_stream *xdr,
6401 struct nfs4_layoutreturn_res *res)
6403 struct compound_hdr hdr;
6406 status = decode_compound_hdr(xdr, &hdr);
6409 status = decode_sequence(xdr, &res->seq_res, rqstp);
6412 status = decode_putfh(xdr);
6415 status = decode_layoutreturn(xdr, res);
6421 * Decode LAYOUTCOMMIT response
6423 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6424 struct xdr_stream *xdr,
6425 struct nfs4_layoutcommit_res *res)
6427 struct compound_hdr hdr;
6430 status = decode_compound_hdr(xdr, &hdr);
6433 status = decode_sequence(xdr, &res->seq_res, rqstp);
6436 status = decode_putfh(xdr);
6439 status = decode_layoutcommit(xdr, rqstp, res);
6442 decode_getfattr(xdr, res->fattr, res->server,
6443 !RPC_IS_ASYNC(rqstp->rq_task));
6447 #endif /* CONFIG_NFS_V4_1 */
6450 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
6451 * the local page cache.
6452 * @xdr: XDR stream where entry resides
6453 * @entry: buffer to fill in with entry data
6454 * @plus: boolean indicating whether this should be a readdirplus entry
6456 * Returns zero if successful, otherwise a negative errno value is
6459 * This function is not invoked during READDIR reply decoding, but
6460 * rather whenever an application invokes the getdents(2) system call
6461 * on a directory already in our cache.
6463 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
6466 uint32_t bitmap[2] = {0};
6468 __be32 *p = xdr_inline_decode(xdr, 4);
6471 if (*p == xdr_zero) {
6472 p = xdr_inline_decode(xdr, 4);
6481 p = xdr_inline_decode(xdr, 12);
6484 entry->prev_cookie = entry->cookie;
6485 p = xdr_decode_hyper(p, &entry->cookie);
6486 entry->len = be32_to_cpup(p);
6488 p = xdr_inline_decode(xdr, entry->len);
6491 entry->name = (const char *) p;
6494 * In case the server doesn't return an inode number,
6495 * we fake one here. (We don't use inode number 0,
6496 * since glibc seems to choke on it...)
6499 entry->fattr->valid = 0;
6501 if (decode_attr_bitmap(xdr, bitmap) < 0)
6504 if (decode_attr_length(xdr, &len, &p) < 0)
6507 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
6508 entry->server, 1) < 0)
6510 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
6511 entry->ino = entry->fattr->mounted_on_fileid;
6512 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
6513 entry->ino = entry->fattr->fileid;
6515 entry->d_type = DT_UNKNOWN;
6516 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
6517 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
6522 print_overflow_msg(__func__, xdr);
6527 * We need to translate between nfs status return values and
6528 * the local errno values which may not be the same.
6535 { NFS4ERR_PERM, -EPERM },
6536 { NFS4ERR_NOENT, -ENOENT },
6537 { NFS4ERR_IO, -errno_NFSERR_IO},
6538 { NFS4ERR_NXIO, -ENXIO },
6539 { NFS4ERR_ACCESS, -EACCES },
6540 { NFS4ERR_EXIST, -EEXIST },
6541 { NFS4ERR_XDEV, -EXDEV },
6542 { NFS4ERR_NOTDIR, -ENOTDIR },
6543 { NFS4ERR_ISDIR, -EISDIR },
6544 { NFS4ERR_INVAL, -EINVAL },
6545 { NFS4ERR_FBIG, -EFBIG },
6546 { NFS4ERR_NOSPC, -ENOSPC },
6547 { NFS4ERR_ROFS, -EROFS },
6548 { NFS4ERR_MLINK, -EMLINK },
6549 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
6550 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
6551 { NFS4ERR_DQUOT, -EDQUOT },
6552 { NFS4ERR_STALE, -ESTALE },
6553 { NFS4ERR_BADHANDLE, -EBADHANDLE },
6554 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
6555 { NFS4ERR_NOTSUPP, -ENOTSUPP },
6556 { NFS4ERR_TOOSMALL, -ETOOSMALL },
6557 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
6558 { NFS4ERR_BADTYPE, -EBADTYPE },
6559 { NFS4ERR_LOCKED, -EAGAIN },
6560 { NFS4ERR_SYMLINK, -ELOOP },
6561 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
6562 { NFS4ERR_DEADLOCK, -EDEADLK },
6567 * Convert an NFS error code to a local one.
6568 * This one is used jointly by NFSv2 and NFSv3.
6571 nfs4_stat_to_errno(int stat)
6574 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
6575 if (nfs_errtbl[i].stat == stat)
6576 return nfs_errtbl[i].errno;
6578 if (stat <= 10000 || stat > 10100) {
6579 /* The server is looney tunes. */
6582 /* If we cannot translate the error, the recovery routines should
6584 * Note: remaining NFSv4 error codes have values > 10000, so should
6585 * not conflict with native Linux error codes.
6590 #define PROC(proc, argtype, restype) \
6591 [NFSPROC4_CLNT_##proc] = { \
6592 .p_proc = NFSPROC4_COMPOUND, \
6593 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
6594 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
6595 .p_arglen = NFS4_##argtype##_sz, \
6596 .p_replen = NFS4_##restype##_sz, \
6597 .p_statidx = NFSPROC4_CLNT_##proc, \
6601 struct rpc_procinfo nfs4_procedures[] = {
6602 PROC(READ, enc_read, dec_read),
6603 PROC(WRITE, enc_write, dec_write),
6604 PROC(COMMIT, enc_commit, dec_commit),
6605 PROC(OPEN, enc_open, dec_open),
6606 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
6607 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
6608 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
6609 PROC(CLOSE, enc_close, dec_close),
6610 PROC(SETATTR, enc_setattr, dec_setattr),
6611 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
6612 PROC(RENEW, enc_renew, dec_renew),
6613 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
6614 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
6615 PROC(LOCK, enc_lock, dec_lock),
6616 PROC(LOCKT, enc_lockt, dec_lockt),
6617 PROC(LOCKU, enc_locku, dec_locku),
6618 PROC(ACCESS, enc_access, dec_access),
6619 PROC(GETATTR, enc_getattr, dec_getattr),
6620 PROC(LOOKUP, enc_lookup, dec_lookup),
6621 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
6622 PROC(REMOVE, enc_remove, dec_remove),
6623 PROC(RENAME, enc_rename, dec_rename),
6624 PROC(LINK, enc_link, dec_link),
6625 PROC(SYMLINK, enc_symlink, dec_symlink),
6626 PROC(CREATE, enc_create, dec_create),
6627 PROC(PATHCONF, enc_pathconf, dec_pathconf),
6628 PROC(STATFS, enc_statfs, dec_statfs),
6629 PROC(READLINK, enc_readlink, dec_readlink),
6630 PROC(READDIR, enc_readdir, dec_readdir),
6631 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
6632 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
6633 PROC(GETACL, enc_getacl, dec_getacl),
6634 PROC(SETACL, enc_setacl, dec_setacl),
6635 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
6636 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
6637 PROC(SECINFO, enc_secinfo, dec_secinfo),
6638 #if defined(CONFIG_NFS_V4_1)
6639 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
6640 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
6641 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
6642 PROC(SEQUENCE, enc_sequence, dec_sequence),
6643 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
6644 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
6645 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
6646 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
6647 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
6648 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
6649 #endif /* CONFIG_NFS_V4_1 */
6652 struct rpc_version nfs_version4 = {
6654 .nrprocs = ARRAY_SIZE(nfs4_procedures),
6655 .procs = nfs4_procedures