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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6/linux-mips.git] / fs / nfs / nfs4xdr.c
blobc191a9baa42262acabeed48b4c557e29ffdfd3db
1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
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.
24 *
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.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/in.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>
54 #include "nfs4_fs.h"
55 #include "internal.h"
56 #include "pnfs.h"
57
58 #define NFSDBG_FACILITY NFSDBG_XDR
59
60 /* Mapping from NFS error code to "errno" error code. */
61 #define errno_NFSERR_IO EIO
62
63 static int nfs4_stat_to_errno(int);
64
65 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
66 #ifdef DEBUG
67 #define NFS4_MAXTAGLEN 20
68 #else
69 #define NFS4_MAXTAGLEN 0
70 #endif
71
72 /* lock,open owner id:
73 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
74 */
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 + \
87 (NFS4_FHSIZE >> 2))
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 4
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 + \
107 1 + 2 + 1 + \
108 nfs4_owner_maxsz + \
109 nfs4_group_maxsz + \
110 4 + 4)
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) + \
123 1 /* sc_prog */ + \
124 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
125 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
126 1) /* sc_cb_ident */
127 #define decode_setclientid_maxsz \
128 (op_decode_hdr_maxsz + \
129 2 + \
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 \
139 (2)
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 + \
150 decode_ace_maxsz)
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 + \
176 encode_attrs_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 + \
196 nfs4_name_maxsz)
197 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
198 decode_change_info_maxsz)
199 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
200 2 * nfs4_name_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 + \
205 nfs4_name_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 + \
209 7 + \
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 + \
222 4)
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 + \
234 1 + \
235 nfs4_fattr_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 + \
239 encode_attrs_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 \
256 (0)
257 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
258 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
259
260 #if defined(CONFIG_NFS_V4_1)
261 #define NFS4_MAX_MACHINE_NAME_LEN (64)
262
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) + \
267 1 /* flags */ + \
268 1 /* spa_how */ + \
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 */ + \
275 1 /* spr_how */ + \
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 */ + \
287 1 /* ca_rdma_ird */)
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) */ + \
297 1 /* stamp */ + \
298 1 /* machinename.len */ + \
299 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
300 1 /* uid */ + \
301 1 /* gid */ + \
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 + \
331 2 /* offset */ + \
332 2 /* length */ + \
333 1 /* reclaim */ + \
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 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
347 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
348 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
349 XDR_QUADLEN(NFS4_STATEID_SIZE))
350 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
351 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
352 XDR_QUADLEN(NFS4_STATEID_SIZE))
353 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
354 #else /* CONFIG_NFS_V4_1 */
355 #define encode_sequence_maxsz 0
356 #define decode_sequence_maxsz 0
357 #endif /* CONFIG_NFS_V4_1 */
358
359 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
360 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
361 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
362 encode_sequence_maxsz + \
363 encode_putfh_maxsz + \
364 encode_read_maxsz)
365 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
366 decode_sequence_maxsz + \
367 decode_putfh_maxsz + \
368 decode_read_maxsz)
369 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
370 encode_sequence_maxsz + \
371 encode_putfh_maxsz + \
372 encode_readlink_maxsz)
373 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
374 decode_sequence_maxsz + \
375 decode_putfh_maxsz + \
376 decode_readlink_maxsz)
377 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
378 encode_sequence_maxsz + \
379 encode_putfh_maxsz + \
380 encode_readdir_maxsz)
381 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
382 decode_sequence_maxsz + \
383 decode_putfh_maxsz + \
384 decode_readdir_maxsz)
385 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
386 encode_sequence_maxsz + \
387 encode_putfh_maxsz + \
388 encode_write_maxsz + \
389 encode_getattr_maxsz)
390 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
391 decode_sequence_maxsz + \
392 decode_putfh_maxsz + \
393 decode_write_maxsz + \
394 decode_getattr_maxsz)
395 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
396 encode_sequence_maxsz + \
397 encode_putfh_maxsz + \
398 encode_commit_maxsz + \
399 encode_getattr_maxsz)
400 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
401 decode_sequence_maxsz + \
402 decode_putfh_maxsz + \
403 decode_commit_maxsz + \
404 decode_getattr_maxsz)
405 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
406 encode_sequence_maxsz + \
407 encode_putfh_maxsz + \
408 encode_savefh_maxsz + \
409 encode_open_maxsz + \
410 encode_getfh_maxsz + \
411 encode_getattr_maxsz + \
412 encode_restorefh_maxsz + \
413 encode_getattr_maxsz)
414 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
415 decode_sequence_maxsz + \
416 decode_putfh_maxsz + \
417 decode_savefh_maxsz + \
418 decode_open_maxsz + \
419 decode_getfh_maxsz + \
420 decode_getattr_maxsz + \
421 decode_restorefh_maxsz + \
422 decode_getattr_maxsz)
423 #define NFS4_enc_open_confirm_sz \
424 (compound_encode_hdr_maxsz + \
425 encode_putfh_maxsz + \
426 encode_open_confirm_maxsz)
427 #define NFS4_dec_open_confirm_sz \
428 (compound_decode_hdr_maxsz + \
429 decode_putfh_maxsz + \
430 decode_open_confirm_maxsz)
431 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
432 encode_sequence_maxsz + \
433 encode_putfh_maxsz + \
434 encode_open_maxsz + \
435 encode_getattr_maxsz)
436 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
437 decode_sequence_maxsz + \
438 decode_putfh_maxsz + \
439 decode_open_maxsz + \
440 decode_getattr_maxsz)
441 #define NFS4_enc_open_downgrade_sz \
442 (compound_encode_hdr_maxsz + \
443 encode_sequence_maxsz + \
444 encode_putfh_maxsz + \
445 encode_open_downgrade_maxsz + \
446 encode_getattr_maxsz)
447 #define NFS4_dec_open_downgrade_sz \
448 (compound_decode_hdr_maxsz + \
449 decode_sequence_maxsz + \
450 decode_putfh_maxsz + \
451 decode_open_downgrade_maxsz + \
452 decode_getattr_maxsz)
453 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
454 encode_sequence_maxsz + \
455 encode_putfh_maxsz + \
456 encode_close_maxsz + \
457 encode_getattr_maxsz)
458 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
459 decode_sequence_maxsz + \
460 decode_putfh_maxsz + \
461 decode_close_maxsz + \
462 decode_getattr_maxsz)
463 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
464 encode_sequence_maxsz + \
465 encode_putfh_maxsz + \
466 encode_setattr_maxsz + \
467 encode_getattr_maxsz)
468 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
469 decode_sequence_maxsz + \
470 decode_putfh_maxsz + \
471 decode_setattr_maxsz + \
472 decode_getattr_maxsz)
473 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
474 encode_sequence_maxsz + \
475 encode_putfh_maxsz + \
476 encode_fsinfo_maxsz)
477 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
478 decode_sequence_maxsz + \
479 decode_putfh_maxsz + \
480 decode_fsinfo_maxsz)
481 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
482 encode_renew_maxsz)
483 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
484 decode_renew_maxsz)
485 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
486 encode_setclientid_maxsz)
487 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
488 decode_setclientid_maxsz)
489 #define NFS4_enc_setclientid_confirm_sz \
490 (compound_encode_hdr_maxsz + \
491 encode_setclientid_confirm_maxsz + \
492 encode_putrootfh_maxsz + \
493 encode_fsinfo_maxsz)
494 #define NFS4_dec_setclientid_confirm_sz \
495 (compound_decode_hdr_maxsz + \
496 decode_setclientid_confirm_maxsz + \
497 decode_putrootfh_maxsz + \
498 decode_fsinfo_maxsz)
499 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
500 encode_sequence_maxsz + \
501 encode_putfh_maxsz + \
502 encode_lock_maxsz)
503 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_lock_maxsz)
507 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
508 encode_sequence_maxsz + \
509 encode_putfh_maxsz + \
510 encode_lockt_maxsz)
511 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
512 decode_sequence_maxsz + \
513 decode_putfh_maxsz + \
514 decode_lockt_maxsz)
515 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
516 encode_sequence_maxsz + \
517 encode_putfh_maxsz + \
518 encode_locku_maxsz)
519 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
520 decode_sequence_maxsz + \
521 decode_putfh_maxsz + \
522 decode_locku_maxsz)
523 #define NFS4_enc_release_lockowner_sz \
524 (compound_encode_hdr_maxsz + \
525 encode_lockowner_maxsz)
526 #define NFS4_dec_release_lockowner_sz \
527 (compound_decode_hdr_maxsz + \
528 decode_lockowner_maxsz)
529 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
530 encode_sequence_maxsz + \
531 encode_putfh_maxsz + \
532 encode_access_maxsz + \
533 encode_getattr_maxsz)
534 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
535 decode_sequence_maxsz + \
536 decode_putfh_maxsz + \
537 decode_access_maxsz + \
538 decode_getattr_maxsz)
539 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
540 encode_sequence_maxsz + \
541 encode_putfh_maxsz + \
542 encode_getattr_maxsz)
543 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
544 decode_sequence_maxsz + \
545 decode_putfh_maxsz + \
546 decode_getattr_maxsz)
547 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
548 encode_sequence_maxsz + \
549 encode_putfh_maxsz + \
550 encode_lookup_maxsz + \
551 encode_getattr_maxsz + \
552 encode_getfh_maxsz)
553 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
554 decode_sequence_maxsz + \
555 decode_putfh_maxsz + \
556 decode_lookup_maxsz + \
557 decode_getattr_maxsz + \
558 decode_getfh_maxsz)
559 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
560 encode_sequence_maxsz + \
561 encode_putrootfh_maxsz + \
562 encode_getattr_maxsz + \
563 encode_getfh_maxsz)
564 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
565 decode_sequence_maxsz + \
566 decode_putrootfh_maxsz + \
567 decode_getattr_maxsz + \
568 decode_getfh_maxsz)
569 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
570 encode_sequence_maxsz + \
571 encode_putfh_maxsz + \
572 encode_remove_maxsz + \
573 encode_getattr_maxsz)
574 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
575 decode_sequence_maxsz + \
576 decode_putfh_maxsz + \
577 decode_remove_maxsz + \
578 decode_getattr_maxsz)
579 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
580 encode_sequence_maxsz + \
581 encode_putfh_maxsz + \
582 encode_savefh_maxsz + \
583 encode_putfh_maxsz + \
584 encode_rename_maxsz + \
585 encode_getattr_maxsz + \
586 encode_restorefh_maxsz + \
587 encode_getattr_maxsz)
588 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
589 decode_sequence_maxsz + \
590 decode_putfh_maxsz + \
591 decode_savefh_maxsz + \
592 decode_putfh_maxsz + \
593 decode_rename_maxsz + \
594 decode_getattr_maxsz + \
595 decode_restorefh_maxsz + \
596 decode_getattr_maxsz)
597 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
598 encode_sequence_maxsz + \
599 encode_putfh_maxsz + \
600 encode_savefh_maxsz + \
601 encode_putfh_maxsz + \
602 encode_link_maxsz + \
603 decode_getattr_maxsz + \
604 encode_restorefh_maxsz + \
605 decode_getattr_maxsz)
606 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
607 decode_sequence_maxsz + \
608 decode_putfh_maxsz + \
609 decode_savefh_maxsz + \
610 decode_putfh_maxsz + \
611 decode_link_maxsz + \
612 decode_getattr_maxsz + \
613 decode_restorefh_maxsz + \
614 decode_getattr_maxsz)
615 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
616 encode_sequence_maxsz + \
617 encode_putfh_maxsz + \
618 encode_symlink_maxsz + \
619 encode_getattr_maxsz + \
620 encode_getfh_maxsz)
621 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
622 decode_sequence_maxsz + \
623 decode_putfh_maxsz + \
624 decode_symlink_maxsz + \
625 decode_getattr_maxsz + \
626 decode_getfh_maxsz)
627 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
628 encode_sequence_maxsz + \
629 encode_putfh_maxsz + \
630 encode_savefh_maxsz + \
631 encode_create_maxsz + \
632 encode_getfh_maxsz + \
633 encode_getattr_maxsz + \
634 encode_restorefh_maxsz + \
635 encode_getattr_maxsz)
636 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
637 decode_sequence_maxsz + \
638 decode_putfh_maxsz + \
639 decode_savefh_maxsz + \
640 decode_create_maxsz + \
641 decode_getfh_maxsz + \
642 decode_getattr_maxsz + \
643 decode_restorefh_maxsz + \
644 decode_getattr_maxsz)
645 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
646 encode_sequence_maxsz + \
647 encode_putfh_maxsz + \
648 encode_getattr_maxsz)
649 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
652 decode_getattr_maxsz)
653 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
654 encode_sequence_maxsz + \
655 encode_putfh_maxsz + \
656 encode_statfs_maxsz)
657 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
658 decode_sequence_maxsz + \
659 decode_putfh_maxsz + \
660 decode_statfs_maxsz)
661 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
662 encode_sequence_maxsz + \
663 encode_putfh_maxsz + \
664 encode_getattr_maxsz)
665 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
666 decode_sequence_maxsz + \
667 decode_putfh_maxsz + \
668 decode_getattr_maxsz)
669 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
670 encode_sequence_maxsz + \
671 encode_putfh_maxsz + \
672 encode_delegreturn_maxsz + \
673 encode_getattr_maxsz)
674 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
675 decode_sequence_maxsz + \
676 decode_delegreturn_maxsz + \
677 decode_getattr_maxsz)
678 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
679 encode_sequence_maxsz + \
680 encode_putfh_maxsz + \
681 encode_getacl_maxsz)
682 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
683 decode_sequence_maxsz + \
684 decode_putfh_maxsz + \
685 decode_getacl_maxsz)
686 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
687 encode_sequence_maxsz + \
688 encode_putfh_maxsz + \
689 encode_setacl_maxsz)
690 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
691 decode_sequence_maxsz + \
692 decode_putfh_maxsz + \
693 decode_setacl_maxsz)
694 #define NFS4_enc_fs_locations_sz \
695 (compound_encode_hdr_maxsz + \
696 encode_sequence_maxsz + \
697 encode_putfh_maxsz + \
698 encode_lookup_maxsz + \
699 encode_fs_locations_maxsz)
700 #define NFS4_dec_fs_locations_sz \
701 (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_lookup_maxsz + \
705 decode_fs_locations_maxsz)
706 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
707 encode_sequence_maxsz + \
708 encode_putfh_maxsz + \
709 encode_secinfo_maxsz)
710 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
711 decode_sequence_maxsz + \
712 decode_putfh_maxsz + \
713 decode_secinfo_maxsz)
714 #if defined(CONFIG_NFS_V4_1)
715 #define NFS4_enc_exchange_id_sz \
716 (compound_encode_hdr_maxsz + \
717 encode_exchange_id_maxsz)
718 #define NFS4_dec_exchange_id_sz \
719 (compound_decode_hdr_maxsz + \
720 decode_exchange_id_maxsz)
721 #define NFS4_enc_create_session_sz \
722 (compound_encode_hdr_maxsz + \
723 encode_create_session_maxsz)
724 #define NFS4_dec_create_session_sz \
725 (compound_decode_hdr_maxsz + \
726 decode_create_session_maxsz)
727 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
728 encode_destroy_session_maxsz)
729 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
730 decode_destroy_session_maxsz)
731 #define NFS4_enc_sequence_sz \
732 (compound_decode_hdr_maxsz + \
733 encode_sequence_maxsz)
734 #define NFS4_dec_sequence_sz \
735 (compound_decode_hdr_maxsz + \
736 decode_sequence_maxsz)
737 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
738 encode_sequence_maxsz + \
739 encode_putrootfh_maxsz + \
740 encode_fsinfo_maxsz)
741 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
742 decode_sequence_maxsz + \
743 decode_putrootfh_maxsz + \
744 decode_fsinfo_maxsz)
745 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
746 encode_sequence_maxsz + \
747 encode_reclaim_complete_maxsz)
748 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
749 decode_sequence_maxsz + \
750 decode_reclaim_complete_maxsz)
751 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
752 encode_sequence_maxsz +\
753 encode_getdeviceinfo_maxsz)
754 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
755 decode_sequence_maxsz + \
756 decode_getdeviceinfo_maxsz)
757 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
758 encode_sequence_maxsz + \
759 encode_putfh_maxsz + \
760 encode_layoutget_maxsz)
761 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
762 decode_sequence_maxsz + \
763 decode_putfh_maxsz + \
764 decode_layoutget_maxsz)
765 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
766 encode_sequence_maxsz +\
767 encode_putfh_maxsz + \
768 encode_layoutcommit_maxsz + \
769 encode_getattr_maxsz)
770 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
771 decode_sequence_maxsz + \
772 decode_putfh_maxsz + \
773 decode_layoutcommit_maxsz + \
774 decode_getattr_maxsz)
775 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
776 encode_sequence_maxsz + \
777 encode_putfh_maxsz + \
778 encode_layoutreturn_maxsz)
779 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
780 decode_sequence_maxsz + \
781 decode_putfh_maxsz + \
782 decode_layoutreturn_maxsz)
783 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
784 encode_sequence_maxsz + \
785 encode_putrootfh_maxsz +\
786 encode_secinfo_no_name_maxsz)
787 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
788 decode_sequence_maxsz + \
789 decode_putrootfh_maxsz + \
790 decode_secinfo_no_name_maxsz)
791 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
792 encode_sequence_maxsz + \
793 encode_test_stateid_maxsz)
794 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
795 decode_sequence_maxsz + \
796 decode_test_stateid_maxsz)
797 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
798 encode_sequence_maxsz + \
799 encode_free_stateid_maxsz)
800 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
801 decode_sequence_maxsz + \
802 decode_free_stateid_maxsz)
803
804 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
805 compound_encode_hdr_maxsz +
806 encode_sequence_maxsz +
807 encode_putfh_maxsz +
808 encode_getattr_maxsz) *
809 XDR_UNIT);
810
811 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
812 compound_decode_hdr_maxsz +
813 decode_sequence_maxsz +
814 decode_putfh_maxsz) *
815 XDR_UNIT);
816 #endif /* CONFIG_NFS_V4_1 */
817
818 static const umode_t nfs_type2fmt[] = {
819 [NF4BAD] = 0,
820 [NF4REG] = S_IFREG,
821 [NF4DIR] = S_IFDIR,
822 [NF4BLK] = S_IFBLK,
823 [NF4CHR] = S_IFCHR,
824 [NF4LNK] = S_IFLNK,
825 [NF4SOCK] = S_IFSOCK,
826 [NF4FIFO] = S_IFIFO,
827 [NF4ATTRDIR] = 0,
828 [NF4NAMEDATTR] = 0,
829 };
830
831 struct compound_hdr {
832 int32_t status;
833 uint32_t nops;
834 __be32 * nops_p;
835 uint32_t taglen;
836 char * tag;
837 uint32_t replen; /* expected reply words */
838 u32 minorversion;
839 };
840
841 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
842 {
843 __be32 *p = xdr_reserve_space(xdr, nbytes);
844 BUG_ON(!p);
845 return p;
846 }
847
848 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
849 {
850 __be32 *p;
851
852 p = xdr_reserve_space(xdr, 4 + len);
853 BUG_ON(p == NULL);
854 xdr_encode_opaque(p, str, len);
855 }
856
857 static void encode_compound_hdr(struct xdr_stream *xdr,
858 struct rpc_rqst *req,
859 struct compound_hdr *hdr)
860 {
861 __be32 *p;
862 struct rpc_auth *auth = req->rq_cred->cr_auth;
863
864 /* initialize running count of expected bytes in reply.
865 * NOTE: the replied tag SHOULD be the same is the one sent,
866 * but this is not required as a MUST for the server to do so. */
867 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
868
869 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
870 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
871 p = reserve_space(xdr, 4 + hdr->taglen + 8);
872 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
873 *p++ = cpu_to_be32(hdr->minorversion);
874 hdr->nops_p = p;
875 *p = cpu_to_be32(hdr->nops);
876 }
877
878 static void encode_nops(struct compound_hdr *hdr)
879 {
880 BUG_ON(hdr->nops > NFS4_MAX_OPS);
881 *hdr->nops_p = htonl(hdr->nops);
882 }
883
884 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
885 {
886 __be32 *p;
887
888 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
889 BUG_ON(p == NULL);
890 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
891 }
892
893 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
894 {
895 char owner_name[IDMAP_NAMESZ];
896 char owner_group[IDMAP_NAMESZ];
897 int owner_namelen = 0;
898 int owner_grouplen = 0;
899 __be32 *p;
900 __be32 *q;
901 int len;
902 uint32_t bmval0 = 0;
903 uint32_t bmval1 = 0;
904
905 /*
906 * We reserve enough space to write the entire attribute buffer at once.
907 * In the worst-case, this would be
908 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
909 * = 36 bytes, plus any contribution from variable-length fields
910 * such as owner/group.
911 */
912 len = 16;
913
914 /* Sigh */
915 if (iap->ia_valid & ATTR_SIZE)
916 len += 8;
917 if (iap->ia_valid & ATTR_MODE)
918 len += 4;
919 if (iap->ia_valid & ATTR_UID) {
920 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
921 if (owner_namelen < 0) {
922 dprintk("nfs: couldn't resolve uid %d to string\n",
923 iap->ia_uid);
924 /* XXX */
925 strcpy(owner_name, "nobody");
926 owner_namelen = sizeof("nobody") - 1;
927 /* goto out; */
928 }
929 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
930 }
931 if (iap->ia_valid & ATTR_GID) {
932 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
933 if (owner_grouplen < 0) {
934 dprintk("nfs: couldn't resolve gid %d to string\n",
935 iap->ia_gid);
936 strcpy(owner_group, "nobody");
937 owner_grouplen = sizeof("nobody") - 1;
938 /* goto out; */
939 }
940 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
941 }
942 if (iap->ia_valid & ATTR_ATIME_SET)
943 len += 16;
944 else if (iap->ia_valid & ATTR_ATIME)
945 len += 4;
946 if (iap->ia_valid & ATTR_MTIME_SET)
947 len += 16;
948 else if (iap->ia_valid & ATTR_MTIME)
949 len += 4;
950 p = reserve_space(xdr, len);
951
952 /*
953 * We write the bitmap length now, but leave the bitmap and the attribute
954 * buffer length to be backfilled at the end of this routine.
955 */
956 *p++ = cpu_to_be32(2);
957 q = p;
958 p += 3;
959
960 if (iap->ia_valid & ATTR_SIZE) {
961 bmval0 |= FATTR4_WORD0_SIZE;
962 p = xdr_encode_hyper(p, iap->ia_size);
963 }
964 if (iap->ia_valid & ATTR_MODE) {
965 bmval1 |= FATTR4_WORD1_MODE;
966 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
967 }
968 if (iap->ia_valid & ATTR_UID) {
969 bmval1 |= FATTR4_WORD1_OWNER;
970 p = xdr_encode_opaque(p, owner_name, owner_namelen);
971 }
972 if (iap->ia_valid & ATTR_GID) {
973 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
974 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
975 }
976 if (iap->ia_valid & ATTR_ATIME_SET) {
977 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
978 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
979 *p++ = cpu_to_be32(0);
980 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
981 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
982 }
983 else if (iap->ia_valid & ATTR_ATIME) {
984 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
985 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
986 }
987 if (iap->ia_valid & ATTR_MTIME_SET) {
988 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
989 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
990 *p++ = cpu_to_be32(0);
991 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
992 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
993 }
994 else if (iap->ia_valid & ATTR_MTIME) {
995 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
996 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
997 }
998
999 /*
1000 * Now we backfill the bitmap and the attribute buffer length.
1001 */
1002 if (len != ((char *)p - (char *)q) + 4) {
1003 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
1004 len, ((char *)p - (char *)q) + 4);
1005 BUG();
1006 }
1007 len = (char *)p - (char *)q - 12;
1008 *q++ = htonl(bmval0);
1009 *q++ = htonl(bmval1);
1010 *q = htonl(len);
1011
1012 /* out: */
1013 }
1014
1015 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1016 {
1017 __be32 *p;
1018
1019 p = reserve_space(xdr, 8);
1020 *p++ = cpu_to_be32(OP_ACCESS);
1021 *p = cpu_to_be32(access);
1022 hdr->nops++;
1023 hdr->replen += decode_access_maxsz;
1024 }
1025
1026 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1027 {
1028 __be32 *p;
1029
1030 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
1031 *p++ = cpu_to_be32(OP_CLOSE);
1032 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
1033 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1034 hdr->nops++;
1035 hdr->replen += decode_close_maxsz;
1036 }
1037
1038 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1039 {
1040 __be32 *p;
1041
1042 p = reserve_space(xdr, 16);
1043 *p++ = cpu_to_be32(OP_COMMIT);
1044 p = xdr_encode_hyper(p, args->offset);
1045 *p = cpu_to_be32(args->count);
1046 hdr->nops++;
1047 hdr->replen += decode_commit_maxsz;
1048 }
1049
1050 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1051 {
1052 __be32 *p;
1053
1054 p = reserve_space(xdr, 8);
1055 *p++ = cpu_to_be32(OP_CREATE);
1056 *p = cpu_to_be32(create->ftype);
1057
1058 switch (create->ftype) {
1059 case NF4LNK:
1060 p = reserve_space(xdr, 4);
1061 *p = cpu_to_be32(create->u.symlink.len);
1062 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1063 break;
1064
1065 case NF4BLK: case NF4CHR:
1066 p = reserve_space(xdr, 8);
1067 *p++ = cpu_to_be32(create->u.device.specdata1);
1068 *p = cpu_to_be32(create->u.device.specdata2);
1069 break;
1070
1071 default:
1072 break;
1073 }
1074
1075 encode_string(xdr, create->name->len, create->name->name);
1076 hdr->nops++;
1077 hdr->replen += decode_create_maxsz;
1078
1079 encode_attrs(xdr, create->attrs, create->server);
1080 }
1081
1082 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1083 {
1084 __be32 *p;
1085
1086 p = reserve_space(xdr, 12);
1087 *p++ = cpu_to_be32(OP_GETATTR);
1088 *p++ = cpu_to_be32(1);
1089 *p = cpu_to_be32(bitmap);
1090 hdr->nops++;
1091 hdr->replen += decode_getattr_maxsz;
1092 }
1093
1094 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1095 {
1096 __be32 *p;
1097
1098 p = reserve_space(xdr, 16);
1099 *p++ = cpu_to_be32(OP_GETATTR);
1100 *p++ = cpu_to_be32(2);
1101 *p++ = cpu_to_be32(bm0);
1102 *p = cpu_to_be32(bm1);
1103 hdr->nops++;
1104 hdr->replen += decode_getattr_maxsz;
1105 }
1106
1107 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1108 {
1109 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1110 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1111 }
1112
1113 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1114 {
1115 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
1116 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
1117 }
1118
1119 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1120 {
1121 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1122 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1123 }
1124
1125 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1126 {
1127 __be32 *p;
1128
1129 p = reserve_space(xdr, 4);
1130 *p = cpu_to_be32(OP_GETFH);
1131 hdr->nops++;
1132 hdr->replen += decode_getfh_maxsz;
1133 }
1134
1135 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1136 {
1137 __be32 *p;
1138
1139 p = reserve_space(xdr, 8 + name->len);
1140 *p++ = cpu_to_be32(OP_LINK);
1141 xdr_encode_opaque(p, name->name, name->len);
1142 hdr->nops++;
1143 hdr->replen += decode_link_maxsz;
1144 }
1145
1146 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1147 {
1148 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1149 return block ? NFS4_READW_LT : NFS4_READ_LT;
1150 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1151 }
1152
1153 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1154 {
1155 if (fl->fl_end == OFFSET_MAX)
1156 return ~(uint64_t)0;
1157 return fl->fl_end - fl->fl_start + 1;
1158 }
1159
1160 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1161 {
1162 __be32 *p;
1163
1164 p = reserve_space(xdr, 32);
1165 p = xdr_encode_hyper(p, lowner->clientid);
1166 *p++ = cpu_to_be32(20);
1167 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1168 *p++ = cpu_to_be32(lowner->s_dev);
1169 xdr_encode_hyper(p, lowner->id);
1170 }
1171
1172 /*
1173 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1174 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1175 */
1176 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1177 {
1178 __be32 *p;
1179
1180 p = reserve_space(xdr, 32);
1181 *p++ = cpu_to_be32(OP_LOCK);
1182 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1183 *p++ = cpu_to_be32(args->reclaim);
1184 p = xdr_encode_hyper(p, args->fl->fl_start);
1185 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1186 *p = cpu_to_be32(args->new_lock_owner);
1187 if (args->new_lock_owner){
1188 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1189 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
1190 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
1191 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
1192 encode_lockowner(xdr, &args->lock_owner);
1193 }
1194 else {
1195 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
1196 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
1197 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
1198 }
1199 hdr->nops++;
1200 hdr->replen += decode_lock_maxsz;
1201 }
1202
1203 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1204 {
1205 __be32 *p;
1206
1207 p = reserve_space(xdr, 24);
1208 *p++ = cpu_to_be32(OP_LOCKT);
1209 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1210 p = xdr_encode_hyper(p, args->fl->fl_start);
1211 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1212 encode_lockowner(xdr, &args->lock_owner);
1213 hdr->nops++;
1214 hdr->replen += decode_lockt_maxsz;
1215 }
1216
1217 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1218 {
1219 __be32 *p;
1220
1221 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
1222 *p++ = cpu_to_be32(OP_LOCKU);
1223 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1224 *p++ = cpu_to_be32(args->seqid->sequence->counter);
1225 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1226 p = xdr_encode_hyper(p, args->fl->fl_start);
1227 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1228 hdr->nops++;
1229 hdr->replen += decode_locku_maxsz;
1230 }
1231
1232 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1233 {
1234 __be32 *p;
1235
1236 p = reserve_space(xdr, 4);
1237 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1238 encode_lockowner(xdr, lowner);
1239 hdr->nops++;
1240 hdr->replen += decode_release_lockowner_maxsz;
1241 }
1242
1243 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1244 {
1245 int len = name->len;
1246 __be32 *p;
1247
1248 p = reserve_space(xdr, 8 + len);
1249 *p++ = cpu_to_be32(OP_LOOKUP);
1250 xdr_encode_opaque(p, name->name, len);
1251 hdr->nops++;
1252 hdr->replen += decode_lookup_maxsz;
1253 }
1254
1255 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1256 {
1257 __be32 *p;
1258
1259 p = reserve_space(xdr, 8);
1260 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1261 case FMODE_READ:
1262 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1263 break;
1264 case FMODE_WRITE:
1265 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1266 break;
1267 case FMODE_READ|FMODE_WRITE:
1268 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1269 break;
1270 default:
1271 *p++ = cpu_to_be32(0);
1272 }
1273 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1274 }
1275
1276 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1277 {
1278 __be32 *p;
1279 /*
1280 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1281 * owner 4 = 32
1282 */
1283 p = reserve_space(xdr, 8);
1284 *p++ = cpu_to_be32(OP_OPEN);
1285 *p = cpu_to_be32(arg->seqid->sequence->counter);
1286 encode_share_access(xdr, arg->fmode);
1287 p = reserve_space(xdr, 32);
1288 p = xdr_encode_hyper(p, arg->clientid);
1289 *p++ = cpu_to_be32(20);
1290 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1291 *p++ = cpu_to_be32(arg->server->s_dev);
1292 xdr_encode_hyper(p, arg->id);
1293 }
1294
1295 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1296 {
1297 __be32 *p;
1298 struct nfs_client *clp;
1299
1300 p = reserve_space(xdr, 4);
1301 switch(arg->open_flags & O_EXCL) {
1302 case 0:
1303 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1304 encode_attrs(xdr, arg->u.attrs, arg->server);
1305 break;
1306 default:
1307 clp = arg->server->nfs_client;
1308 if (clp->cl_mvops->minor_version > 0) {
1309 if (nfs4_has_persistent_session(clp)) {
1310 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1311 encode_attrs(xdr, arg->u.attrs, arg->server);
1312 } else {
1313 struct iattr dummy;
1314
1315 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1316 encode_nfs4_verifier(xdr, &arg->u.verifier);
1317 dummy.ia_valid = 0;
1318 encode_attrs(xdr, &dummy, arg->server);
1319 }
1320 } else {
1321 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1322 encode_nfs4_verifier(xdr, &arg->u.verifier);
1323 }
1324 }
1325 }
1326
1327 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1328 {
1329 __be32 *p;
1330
1331 p = reserve_space(xdr, 4);
1332 switch (arg->open_flags & O_CREAT) {
1333 case 0:
1334 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1335 break;
1336 default:
1337 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1338 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1339 encode_createmode(xdr, arg);
1340 }
1341 }
1342
1343 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1344 {
1345 __be32 *p;
1346
1347 p = reserve_space(xdr, 4);
1348 switch (delegation_type) {
1349 case 0:
1350 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1351 break;
1352 case FMODE_READ:
1353 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1354 break;
1355 case FMODE_WRITE|FMODE_READ:
1356 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1357 break;
1358 default:
1359 BUG();
1360 }
1361 }
1362
1363 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1364 {
1365 __be32 *p;
1366
1367 p = reserve_space(xdr, 4);
1368 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1369 encode_string(xdr, name->len, name->name);
1370 }
1371
1372 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1373 {
1374 __be32 *p;
1375
1376 p = reserve_space(xdr, 4);
1377 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1378 encode_delegation_type(xdr, type);
1379 }
1380
1381 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1382 {
1383 __be32 *p;
1384
1385 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1386 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1387 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1388 encode_string(xdr, name->len, name->name);
1389 }
1390
1391 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1392 {
1393 encode_openhdr(xdr, arg);
1394 encode_opentype(xdr, arg);
1395 switch (arg->claim) {
1396 case NFS4_OPEN_CLAIM_NULL:
1397 encode_claim_null(xdr, arg->name);
1398 break;
1399 case NFS4_OPEN_CLAIM_PREVIOUS:
1400 encode_claim_previous(xdr, arg->u.delegation_type);
1401 break;
1402 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1403 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1404 break;
1405 default:
1406 BUG();
1407 }
1408 hdr->nops++;
1409 hdr->replen += decode_open_maxsz;
1410 }
1411
1412 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1413 {
1414 __be32 *p;
1415
1416 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1417 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
1418 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1419 *p = cpu_to_be32(arg->seqid->sequence->counter);
1420 hdr->nops++;
1421 hdr->replen += decode_open_confirm_maxsz;
1422 }
1423
1424 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1425 {
1426 __be32 *p;
1427
1428 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
1429 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
1430 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
1431 *p = cpu_to_be32(arg->seqid->sequence->counter);
1432 encode_share_access(xdr, arg->fmode);
1433 hdr->nops++;
1434 hdr->replen += decode_open_downgrade_maxsz;
1435 }
1436
1437 static void
1438 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1439 {
1440 int len = fh->size;
1441 __be32 *p;
1442
1443 p = reserve_space(xdr, 8 + len);
1444 *p++ = cpu_to_be32(OP_PUTFH);
1445 xdr_encode_opaque(p, fh->data, len);
1446 hdr->nops++;
1447 hdr->replen += decode_putfh_maxsz;
1448 }
1449
1450 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1451 {
1452 __be32 *p;
1453
1454 p = reserve_space(xdr, 4);
1455 *p = cpu_to_be32(OP_PUTROOTFH);
1456 hdr->nops++;
1457 hdr->replen += decode_putrootfh_maxsz;
1458 }
1459
1460 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid)
1461 {
1462 nfs4_stateid stateid;
1463 __be32 *p;
1464
1465 p = reserve_space(xdr, NFS4_STATEID_SIZE);
1466 if (ctx->state != NULL) {
1467 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
1468 if (zero_seqid)
1469 stateid.stateid.seqid = 0;
1470 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
1471 } else
1472 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1473 }
1474
1475 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1476 {
1477 __be32 *p;
1478
1479 p = reserve_space(xdr, 4);
1480 *p = cpu_to_be32(OP_READ);
1481
1482 encode_stateid(xdr, args->context, args->lock_context,
1483 hdr->minorversion);
1484
1485 p = reserve_space(xdr, 12);
1486 p = xdr_encode_hyper(p, args->offset);
1487 *p = cpu_to_be32(args->count);
1488 hdr->nops++;
1489 hdr->replen += decode_read_maxsz;
1490 }
1491
1492 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1493 {
1494 uint32_t attrs[2] = {
1495 FATTR4_WORD0_RDATTR_ERROR,
1496 FATTR4_WORD1_MOUNTED_ON_FILEID,
1497 };
1498 uint32_t dircount = readdir->count >> 1;
1499 __be32 *p;
1500
1501 if (readdir->plus) {
1502 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1503 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1504 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1505 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1506 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1507 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1508 dircount >>= 1;
1509 }
1510 /* Use mounted_on_fileid only if the server supports it */
1511 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1512 attrs[0] |= FATTR4_WORD0_FILEID;
1513
1514 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
1515 *p++ = cpu_to_be32(OP_READDIR);
1516 p = xdr_encode_hyper(p, readdir->cookie);
1517 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
1518 *p++ = cpu_to_be32(dircount);
1519 *p++ = cpu_to_be32(readdir->count);
1520 *p++ = cpu_to_be32(2);
1521
1522 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1523 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1524 hdr->nops++;
1525 hdr->replen += decode_readdir_maxsz;
1526 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1527 __func__,
1528 (unsigned long long)readdir->cookie,
1529 ((u32 *)readdir->verifier.data)[0],
1530 ((u32 *)readdir->verifier.data)[1],
1531 attrs[0] & readdir->bitmask[0],
1532 attrs[1] & readdir->bitmask[1]);
1533 }
1534
1535 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1536 {
1537 __be32 *p;
1538
1539 p = reserve_space(xdr, 4);
1540 *p = cpu_to_be32(OP_READLINK);
1541 hdr->nops++;
1542 hdr->replen += decode_readlink_maxsz;
1543 }
1544
1545 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1546 {
1547 __be32 *p;
1548
1549 p = reserve_space(xdr, 8 + name->len);
1550 *p++ = cpu_to_be32(OP_REMOVE);
1551 xdr_encode_opaque(p, name->name, name->len);
1552 hdr->nops++;
1553 hdr->replen += decode_remove_maxsz;
1554 }
1555
1556 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1557 {
1558 __be32 *p;
1559
1560 p = reserve_space(xdr, 4);
1561 *p = cpu_to_be32(OP_RENAME);
1562 encode_string(xdr, oldname->len, oldname->name);
1563 encode_string(xdr, newname->len, newname->name);
1564 hdr->nops++;
1565 hdr->replen += decode_rename_maxsz;
1566 }
1567
1568 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1569 {
1570 __be32 *p;
1571
1572 p = reserve_space(xdr, 12);
1573 *p++ = cpu_to_be32(OP_RENEW);
1574 xdr_encode_hyper(p, client_stateid->cl_clientid);
1575 hdr->nops++;
1576 hdr->replen += decode_renew_maxsz;
1577 }
1578
1579 static void
1580 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1581 {
1582 __be32 *p;
1583
1584 p = reserve_space(xdr, 4);
1585 *p = cpu_to_be32(OP_RESTOREFH);
1586 hdr->nops++;
1587 hdr->replen += decode_restorefh_maxsz;
1588 }
1589
1590 static void
1591 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1592 {
1593 __be32 *p;
1594
1595 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1596 *p++ = cpu_to_be32(OP_SETATTR);
1597 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
1598 p = reserve_space(xdr, 2*4);
1599 *p++ = cpu_to_be32(1);
1600 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1601 BUG_ON(arg->acl_len % 4);
1602 p = reserve_space(xdr, 4);
1603 *p = cpu_to_be32(arg->acl_len);
1604 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1605 hdr->nops++;
1606 hdr->replen += decode_setacl_maxsz;
1607 }
1608
1609 static void
1610 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1611 {
1612 __be32 *p;
1613
1614 p = reserve_space(xdr, 4);
1615 *p = cpu_to_be32(OP_SAVEFH);
1616 hdr->nops++;
1617 hdr->replen += decode_savefh_maxsz;
1618 }
1619
1620 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1621 {
1622 __be32 *p;
1623
1624 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1625 *p++ = cpu_to_be32(OP_SETATTR);
1626 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
1627 hdr->nops++;
1628 hdr->replen += decode_setattr_maxsz;
1629 encode_attrs(xdr, arg->iap, server);
1630 }
1631
1632 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1633 {
1634 __be32 *p;
1635
1636 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
1637 *p++ = cpu_to_be32(OP_SETCLIENTID);
1638 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1639
1640 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1641 p = reserve_space(xdr, 4);
1642 *p = cpu_to_be32(setclientid->sc_prog);
1643 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1644 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1645 p = reserve_space(xdr, 4);
1646 *p = cpu_to_be32(setclientid->sc_cb_ident);
1647 hdr->nops++;
1648 hdr->replen += decode_setclientid_maxsz;
1649 }
1650
1651 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1652 {
1653 __be32 *p;
1654
1655 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
1656 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
1657 p = xdr_encode_hyper(p, arg->clientid);
1658 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
1659 hdr->nops++;
1660 hdr->replen += decode_setclientid_confirm_maxsz;
1661 }
1662
1663 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1664 {
1665 __be32 *p;
1666
1667 p = reserve_space(xdr, 4);
1668 *p = cpu_to_be32(OP_WRITE);
1669
1670 encode_stateid(xdr, args->context, args->lock_context,
1671 hdr->minorversion);
1672
1673 p = reserve_space(xdr, 16);
1674 p = xdr_encode_hyper(p, args->offset);
1675 *p++ = cpu_to_be32(args->stable);
1676 *p = cpu_to_be32(args->count);
1677
1678 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1679 hdr->nops++;
1680 hdr->replen += decode_write_maxsz;
1681 }
1682
1683 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1684 {
1685 __be32 *p;
1686
1687 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
1688
1689 *p++ = cpu_to_be32(OP_DELEGRETURN);
1690 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
1691 hdr->nops++;
1692 hdr->replen += decode_delegreturn_maxsz;
1693 }
1694
1695 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1696 {
1697 int len = name->len;
1698 __be32 *p;
1699
1700 p = reserve_space(xdr, 8 + len);
1701 *p++ = cpu_to_be32(OP_SECINFO);
1702 xdr_encode_opaque(p, name->name, len);
1703 hdr->nops++;
1704 hdr->replen += decode_secinfo_maxsz;
1705 }
1706
1707 #if defined(CONFIG_NFS_V4_1)
1708 /* NFSv4.1 operations */
1709 static void encode_exchange_id(struct xdr_stream *xdr,
1710 struct nfs41_exchange_id_args *args,
1711 struct compound_hdr *hdr)
1712 {
1713 __be32 *p;
1714
1715 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
1716 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
1717 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
1718
1719 encode_string(xdr, args->id_len, args->id);
1720
1721 p = reserve_space(xdr, 12);
1722 *p++ = cpu_to_be32(args->flags);
1723 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1724 *p = cpu_to_be32(0); /* zero length implementation id array */
1725 hdr->nops++;
1726 hdr->replen += decode_exchange_id_maxsz;
1727 }
1728
1729 static void encode_create_session(struct xdr_stream *xdr,
1730 struct nfs41_create_session_args *args,
1731 struct compound_hdr *hdr)
1732 {
1733 __be32 *p;
1734 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1735 uint32_t len;
1736 struct nfs_client *clp = args->client;
1737 u32 max_resp_sz_cached;
1738
1739 /*
1740 * Assumes OPEN is the biggest non-idempotent compound.
1741 * 2 is the verifier.
1742 */
1743 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1744 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1745
1746 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1747 clp->cl_ipaddr);
1748
1749 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
1750 *p++ = cpu_to_be32(OP_CREATE_SESSION);
1751 p = xdr_encode_hyper(p, clp->cl_clientid);
1752 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1753 *p++ = cpu_to_be32(args->flags); /*flags */
1754
1755 /* Fore Channel */
1756 *p++ = cpu_to_be32(0); /* header padding size */
1757 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1758 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1759 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1760 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1761 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1762 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1763
1764 /* Back Channel */
1765 *p++ = cpu_to_be32(0); /* header padding size */
1766 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1767 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1768 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1769 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1770 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1771 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1772
1773 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1774 *p++ = cpu_to_be32(1);
1775 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1776
1777 /* authsys_parms rfc1831 */
1778 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
1779 p = xdr_encode_opaque(p, machine_name, len);
1780 *p++ = cpu_to_be32(0); /* UID */
1781 *p++ = cpu_to_be32(0); /* GID */
1782 *p = cpu_to_be32(0); /* No more gids */
1783 hdr->nops++;
1784 hdr->replen += decode_create_session_maxsz;
1785 }
1786
1787 static void encode_destroy_session(struct xdr_stream *xdr,
1788 struct nfs4_session *session,
1789 struct compound_hdr *hdr)
1790 {
1791 __be32 *p;
1792 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
1793 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
1794 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1795 hdr->nops++;
1796 hdr->replen += decode_destroy_session_maxsz;
1797 }
1798
1799 static void encode_reclaim_complete(struct xdr_stream *xdr,
1800 struct nfs41_reclaim_complete_args *args,
1801 struct compound_hdr *hdr)
1802 {
1803 __be32 *p;
1804
1805 p = reserve_space(xdr, 8);
1806 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1807 *p++ = cpu_to_be32(args->one_fs);
1808 hdr->nops++;
1809 hdr->replen += decode_reclaim_complete_maxsz;
1810 }
1811 #endif /* CONFIG_NFS_V4_1 */
1812
1813 static void encode_sequence(struct xdr_stream *xdr,
1814 const struct nfs4_sequence_args *args,
1815 struct compound_hdr *hdr)
1816 {
1817 #if defined(CONFIG_NFS_V4_1)
1818 struct nfs4_session *session = args->sa_session;
1819 struct nfs4_slot_table *tp;
1820 struct nfs4_slot *slot;
1821 __be32 *p;
1822
1823 if (!session)
1824 return;
1825
1826 tp = &session->fc_slot_table;
1827
1828 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1829 slot = tp->slots + args->sa_slotid;
1830
1831 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
1832 *p++ = cpu_to_be32(OP_SEQUENCE);
1833
1834 /*
1835 * Sessionid + seqid + slotid + max slotid + cache_this
1836 */
1837 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1838 "max_slotid=%d cache_this=%d\n",
1839 __func__,
1840 ((u32 *)session->sess_id.data)[0],
1841 ((u32 *)session->sess_id.data)[1],
1842 ((u32 *)session->sess_id.data)[2],
1843 ((u32 *)session->sess_id.data)[3],
1844 slot->seq_nr, args->sa_slotid,
1845 tp->highest_used_slotid, args->sa_cache_this);
1846 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1847 *p++ = cpu_to_be32(slot->seq_nr);
1848 *p++ = cpu_to_be32(args->sa_slotid);
1849 *p++ = cpu_to_be32(tp->highest_used_slotid);
1850 *p = cpu_to_be32(args->sa_cache_this);
1851 hdr->nops++;
1852 hdr->replen += decode_sequence_maxsz;
1853 #endif /* CONFIG_NFS_V4_1 */
1854 }
1855
1856 #ifdef CONFIG_NFS_V4_1
1857 static void
1858 encode_getdeviceinfo(struct xdr_stream *xdr,
1859 const struct nfs4_getdeviceinfo_args *args,
1860 struct compound_hdr *hdr)
1861 {
1862 __be32 *p;
1863
1864 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE);
1865 *p++ = cpu_to_be32(OP_GETDEVICEINFO);
1866 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1867 NFS4_DEVICEID4_SIZE);
1868 *p++ = cpu_to_be32(args->pdev->layout_type);
1869 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1870 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1871 hdr->nops++;
1872 hdr->replen += decode_getdeviceinfo_maxsz;
1873 }
1874
1875 static void
1876 encode_layoutget(struct xdr_stream *xdr,
1877 const struct nfs4_layoutget_args *args,
1878 struct compound_hdr *hdr)
1879 {
1880 __be32 *p;
1881
1882 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1883 *p++ = cpu_to_be32(OP_LAYOUTGET);
1884 *p++ = cpu_to_be32(0); /* Signal layout available */
1885 *p++ = cpu_to_be32(args->type);
1886 *p++ = cpu_to_be32(args->range.iomode);
1887 p = xdr_encode_hyper(p, args->range.offset);
1888 p = xdr_encode_hyper(p, args->range.length);
1889 p = xdr_encode_hyper(p, args->minlength);
1890 p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
1891 *p = cpu_to_be32(args->maxcount);
1892
1893 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1894 __func__,
1895 args->type,
1896 args->range.iomode,
1897 (unsigned long)args->range.offset,
1898 (unsigned long)args->range.length,
1899 args->maxcount);
1900 hdr->nops++;
1901 hdr->replen += decode_layoutget_maxsz;
1902 }
1903
1904 static int
1905 encode_layoutcommit(struct xdr_stream *xdr,
1906 struct inode *inode,
1907 const struct nfs4_layoutcommit_args *args,
1908 struct compound_hdr *hdr)
1909 {
1910 __be32 *p;
1911
1912 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1913 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1914
1915 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1916 *p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
1917 /* Only whole file layouts */
1918 p = xdr_encode_hyper(p, 0); /* offset */
1919 p = xdr_encode_hyper(p, NFS4_MAX_UINT64); /* length */
1920 *p++ = cpu_to_be32(0); /* reclaim */
1921 p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE);
1922 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1923 p = xdr_encode_hyper(p, args->lastbytewritten);
1924 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1925 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1926
1927 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1928 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1929 NFS_I(inode)->layout, xdr, args);
1930 else {
1931 p = reserve_space(xdr, 4);
1932 *p = cpu_to_be32(0); /* no layout-type payload */
1933 }
1934
1935 hdr->nops++;
1936 hdr->replen += decode_layoutcommit_maxsz;
1937 return 0;
1938 }
1939
1940 static void
1941 encode_layoutreturn(struct xdr_stream *xdr,
1942 const struct nfs4_layoutreturn_args *args,
1943 struct compound_hdr *hdr)
1944 {
1945 __be32 *p;
1946
1947 p = reserve_space(xdr, 20);
1948 *p++ = cpu_to_be32(OP_LAYOUTRETURN);
1949 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1950 *p++ = cpu_to_be32(args->layout_type);
1951 *p++ = cpu_to_be32(IOMODE_ANY);
1952 *p = cpu_to_be32(RETURN_FILE);
1953 p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE);
1954 p = xdr_encode_hyper(p, 0);
1955 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1956 spin_lock(&args->inode->i_lock);
1957 xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
1958 spin_unlock(&args->inode->i_lock);
1959 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1960 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1961 NFS_I(args->inode)->layout, xdr, args);
1962 } else {
1963 p = reserve_space(xdr, 4);
1964 *p = cpu_to_be32(0);
1965 }
1966 hdr->nops++;
1967 hdr->replen += decode_layoutreturn_maxsz;
1968 }
1969
1970 static int
1971 encode_secinfo_no_name(struct xdr_stream *xdr,
1972 const struct nfs41_secinfo_no_name_args *args,
1973 struct compound_hdr *hdr)
1974 {
1975 __be32 *p;
1976 p = reserve_space(xdr, 8);
1977 *p++ = cpu_to_be32(OP_SECINFO_NO_NAME);
1978 *p++ = cpu_to_be32(args->style);
1979 hdr->nops++;
1980 hdr->replen += decode_secinfo_no_name_maxsz;
1981 return 0;
1982 }
1983
1984 static void encode_test_stateid(struct xdr_stream *xdr,
1985 struct nfs41_test_stateid_args *args,
1986 struct compound_hdr *hdr)
1987 {
1988 __be32 *p;
1989
1990 p = reserve_space(xdr, 8 + NFS4_STATEID_SIZE);
1991 *p++ = cpu_to_be32(OP_TEST_STATEID);
1992 *p++ = cpu_to_be32(1);
1993 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
1994 hdr->nops++;
1995 hdr->replen += decode_test_stateid_maxsz;
1996 }
1997
1998 static void encode_free_stateid(struct xdr_stream *xdr,
1999 struct nfs41_free_stateid_args *args,
2000 struct compound_hdr *hdr)
2001 {
2002 __be32 *p;
2003 p = reserve_space(xdr, 4 + NFS4_STATEID_SIZE);
2004 *p++ = cpu_to_be32(OP_FREE_STATEID);
2005 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
2006 hdr->nops++;
2007 hdr->replen += decode_free_stateid_maxsz;
2008 }
2009 #endif /* CONFIG_NFS_V4_1 */
2010
2011 /*
2012 * END OF "GENERIC" ENCODE ROUTINES.
2013 */
2014
2015 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2016 {
2017 #if defined(CONFIG_NFS_V4_1)
2018 if (args->sa_session)
2019 return args->sa_session->clp->cl_mvops->minor_version;
2020 #endif /* CONFIG_NFS_V4_1 */
2021 return 0;
2022 }
2023
2024 /*
2025 * Encode an ACCESS request
2026 */
2027 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2028 const struct nfs4_accessargs *args)
2029 {
2030 struct compound_hdr hdr = {
2031 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2032 };
2033
2034 encode_compound_hdr(xdr, req, &hdr);
2035 encode_sequence(xdr, &args->seq_args, &hdr);
2036 encode_putfh(xdr, args->fh, &hdr);
2037 encode_access(xdr, args->access, &hdr);
2038 encode_getfattr(xdr, args->bitmask, &hdr);
2039 encode_nops(&hdr);
2040 }
2041
2042 /*
2043 * Encode LOOKUP request
2044 */
2045 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2046 const struct nfs4_lookup_arg *args)
2047 {
2048 struct compound_hdr hdr = {
2049 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2050 };
2051
2052 encode_compound_hdr(xdr, req, &hdr);
2053 encode_sequence(xdr, &args->seq_args, &hdr);
2054 encode_putfh(xdr, args->dir_fh, &hdr);
2055 encode_lookup(xdr, args->name, &hdr);
2056 encode_getfh(xdr, &hdr);
2057 encode_getfattr(xdr, args->bitmask, &hdr);
2058 encode_nops(&hdr);
2059 }
2060
2061 /*
2062 * Encode LOOKUP_ROOT request
2063 */
2064 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2065 struct xdr_stream *xdr,
2066 const struct nfs4_lookup_root_arg *args)
2067 {
2068 struct compound_hdr hdr = {
2069 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2070 };
2071
2072 encode_compound_hdr(xdr, req, &hdr);
2073 encode_sequence(xdr, &args->seq_args, &hdr);
2074 encode_putrootfh(xdr, &hdr);
2075 encode_getfh(xdr, &hdr);
2076 encode_getfattr(xdr, args->bitmask, &hdr);
2077 encode_nops(&hdr);
2078 }
2079
2080 /*
2081 * Encode REMOVE request
2082 */
2083 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2084 const struct nfs_removeargs *args)
2085 {
2086 struct compound_hdr hdr = {
2087 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2088 };
2089
2090 encode_compound_hdr(xdr, req, &hdr);
2091 encode_sequence(xdr, &args->seq_args, &hdr);
2092 encode_putfh(xdr, args->fh, &hdr);
2093 encode_remove(xdr, &args->name, &hdr);
2094 encode_getfattr(xdr, args->bitmask, &hdr);
2095 encode_nops(&hdr);
2096 }
2097
2098 /*
2099 * Encode RENAME request
2100 */
2101 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2102 const struct nfs_renameargs *args)
2103 {
2104 struct compound_hdr hdr = {
2105 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2106 };
2107
2108 encode_compound_hdr(xdr, req, &hdr);
2109 encode_sequence(xdr, &args->seq_args, &hdr);
2110 encode_putfh(xdr, args->old_dir, &hdr);
2111 encode_savefh(xdr, &hdr);
2112 encode_putfh(xdr, args->new_dir, &hdr);
2113 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2114 encode_getfattr(xdr, args->bitmask, &hdr);
2115 encode_restorefh(xdr, &hdr);
2116 encode_getfattr(xdr, args->bitmask, &hdr);
2117 encode_nops(&hdr);
2118 }
2119
2120 /*
2121 * Encode LINK request
2122 */
2123 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2124 const struct nfs4_link_arg *args)
2125 {
2126 struct compound_hdr hdr = {
2127 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2128 };
2129
2130 encode_compound_hdr(xdr, req, &hdr);
2131 encode_sequence(xdr, &args->seq_args, &hdr);
2132 encode_putfh(xdr, args->fh, &hdr);
2133 encode_savefh(xdr, &hdr);
2134 encode_putfh(xdr, args->dir_fh, &hdr);
2135 encode_link(xdr, args->name, &hdr);
2136 encode_getfattr(xdr, args->bitmask, &hdr);
2137 encode_restorefh(xdr, &hdr);
2138 encode_getfattr(xdr, args->bitmask, &hdr);
2139 encode_nops(&hdr);
2140 }
2141
2142 /*
2143 * Encode CREATE request
2144 */
2145 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2146 const struct nfs4_create_arg *args)
2147 {
2148 struct compound_hdr hdr = {
2149 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2150 };
2151
2152 encode_compound_hdr(xdr, req, &hdr);
2153 encode_sequence(xdr, &args->seq_args, &hdr);
2154 encode_putfh(xdr, args->dir_fh, &hdr);
2155 encode_savefh(xdr, &hdr);
2156 encode_create(xdr, args, &hdr);
2157 encode_getfh(xdr, &hdr);
2158 encode_getfattr(xdr, args->bitmask, &hdr);
2159 encode_restorefh(xdr, &hdr);
2160 encode_getfattr(xdr, args->bitmask, &hdr);
2161 encode_nops(&hdr);
2162 }
2163
2164 /*
2165 * Encode SYMLINK request
2166 */
2167 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2168 const struct nfs4_create_arg *args)
2169 {
2170 nfs4_xdr_enc_create(req, xdr, args);
2171 }
2172
2173 /*
2174 * Encode GETATTR request
2175 */
2176 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2177 const struct nfs4_getattr_arg *args)
2178 {
2179 struct compound_hdr hdr = {
2180 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2181 };
2182
2183 encode_compound_hdr(xdr, req, &hdr);
2184 encode_sequence(xdr, &args->seq_args, &hdr);
2185 encode_putfh(xdr, args->fh, &hdr);
2186 encode_getfattr(xdr, args->bitmask, &hdr);
2187 encode_nops(&hdr);
2188 }
2189
2190 /*
2191 * Encode a CLOSE request
2192 */
2193 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2194 struct nfs_closeargs *args)
2195 {
2196 struct compound_hdr hdr = {
2197 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2198 };
2199
2200 encode_compound_hdr(xdr, req, &hdr);
2201 encode_sequence(xdr, &args->seq_args, &hdr);
2202 encode_putfh(xdr, args->fh, &hdr);
2203 encode_close(xdr, args, &hdr);
2204 encode_getfattr(xdr, args->bitmask, &hdr);
2205 encode_nops(&hdr);
2206 }
2207
2208 /*
2209 * Encode an OPEN request
2210 */
2211 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2212 struct nfs_openargs *args)
2213 {
2214 struct compound_hdr hdr = {
2215 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2216 };
2217
2218 encode_compound_hdr(xdr, req, &hdr);
2219 encode_sequence(xdr, &args->seq_args, &hdr);
2220 encode_putfh(xdr, args->fh, &hdr);
2221 encode_savefh(xdr, &hdr);
2222 encode_open(xdr, args, &hdr);
2223 encode_getfh(xdr, &hdr);
2224 encode_getfattr(xdr, args->bitmask, &hdr);
2225 encode_restorefh(xdr, &hdr);
2226 encode_getfattr(xdr, args->bitmask, &hdr);
2227 encode_nops(&hdr);
2228 }
2229
2230 /*
2231 * Encode an OPEN_CONFIRM request
2232 */
2233 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2234 struct xdr_stream *xdr,
2235 struct nfs_open_confirmargs *args)
2236 {
2237 struct compound_hdr hdr = {
2238 .nops = 0,
2239 };
2240
2241 encode_compound_hdr(xdr, req, &hdr);
2242 encode_putfh(xdr, args->fh, &hdr);
2243 encode_open_confirm(xdr, args, &hdr);
2244 encode_nops(&hdr);
2245 }
2246
2247 /*
2248 * Encode an OPEN request with no attributes.
2249 */
2250 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2251 struct xdr_stream *xdr,
2252 struct nfs_openargs *args)
2253 {
2254 struct compound_hdr hdr = {
2255 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2256 };
2257
2258 encode_compound_hdr(xdr, req, &hdr);
2259 encode_sequence(xdr, &args->seq_args, &hdr);
2260 encode_putfh(xdr, args->fh, &hdr);
2261 encode_open(xdr, args, &hdr);
2262 encode_getfattr(xdr, args->bitmask, &hdr);
2263 encode_nops(&hdr);
2264 }
2265
2266 /*
2267 * Encode an OPEN_DOWNGRADE request
2268 */
2269 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2270 struct xdr_stream *xdr,
2271 struct nfs_closeargs *args)
2272 {
2273 struct compound_hdr hdr = {
2274 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2275 };
2276
2277 encode_compound_hdr(xdr, req, &hdr);
2278 encode_sequence(xdr, &args->seq_args, &hdr);
2279 encode_putfh(xdr, args->fh, &hdr);
2280 encode_open_downgrade(xdr, args, &hdr);
2281 encode_getfattr(xdr, args->bitmask, &hdr);
2282 encode_nops(&hdr);
2283 }
2284
2285 /*
2286 * Encode a LOCK request
2287 */
2288 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2289 struct nfs_lock_args *args)
2290 {
2291 struct compound_hdr hdr = {
2292 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2293 };
2294
2295 encode_compound_hdr(xdr, req, &hdr);
2296 encode_sequence(xdr, &args->seq_args, &hdr);
2297 encode_putfh(xdr, args->fh, &hdr);
2298 encode_lock(xdr, args, &hdr);
2299 encode_nops(&hdr);
2300 }
2301
2302 /*
2303 * Encode a LOCKT request
2304 */
2305 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2306 struct nfs_lockt_args *args)
2307 {
2308 struct compound_hdr hdr = {
2309 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2310 };
2311
2312 encode_compound_hdr(xdr, req, &hdr);
2313 encode_sequence(xdr, &args->seq_args, &hdr);
2314 encode_putfh(xdr, args->fh, &hdr);
2315 encode_lockt(xdr, args, &hdr);
2316 encode_nops(&hdr);
2317 }
2318
2319 /*
2320 * Encode a LOCKU request
2321 */
2322 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2323 struct nfs_locku_args *args)
2324 {
2325 struct compound_hdr hdr = {
2326 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2327 };
2328
2329 encode_compound_hdr(xdr, req, &hdr);
2330 encode_sequence(xdr, &args->seq_args, &hdr);
2331 encode_putfh(xdr, args->fh, &hdr);
2332 encode_locku(xdr, args, &hdr);
2333 encode_nops(&hdr);
2334 }
2335
2336 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2337 struct xdr_stream *xdr,
2338 struct nfs_release_lockowner_args *args)
2339 {
2340 struct compound_hdr hdr = {
2341 .minorversion = 0,
2342 };
2343
2344 encode_compound_hdr(xdr, req, &hdr);
2345 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2346 encode_nops(&hdr);
2347 }
2348
2349 /*
2350 * Encode a READLINK request
2351 */
2352 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2353 const struct nfs4_readlink *args)
2354 {
2355 struct compound_hdr hdr = {
2356 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2357 };
2358
2359 encode_compound_hdr(xdr, req, &hdr);
2360 encode_sequence(xdr, &args->seq_args, &hdr);
2361 encode_putfh(xdr, args->fh, &hdr);
2362 encode_readlink(xdr, args, req, &hdr);
2363
2364 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2365 args->pgbase, args->pglen);
2366 encode_nops(&hdr);
2367 }
2368
2369 /*
2370 * Encode a READDIR request
2371 */
2372 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2373 const struct nfs4_readdir_arg *args)
2374 {
2375 struct compound_hdr hdr = {
2376 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2377 };
2378
2379 encode_compound_hdr(xdr, req, &hdr);
2380 encode_sequence(xdr, &args->seq_args, &hdr);
2381 encode_putfh(xdr, args->fh, &hdr);
2382 encode_readdir(xdr, args, req, &hdr);
2383
2384 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2385 args->pgbase, args->count);
2386 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2387 __func__, hdr.replen << 2, args->pages,
2388 args->pgbase, args->count);
2389 encode_nops(&hdr);
2390 }
2391
2392 /*
2393 * Encode a READ request
2394 */
2395 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2396 struct nfs_readargs *args)
2397 {
2398 struct compound_hdr hdr = {
2399 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2400 };
2401
2402 encode_compound_hdr(xdr, req, &hdr);
2403 encode_sequence(xdr, &args->seq_args, &hdr);
2404 encode_putfh(xdr, args->fh, &hdr);
2405 encode_read(xdr, args, &hdr);
2406
2407 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2408 args->pages, args->pgbase, args->count);
2409 req->rq_rcv_buf.flags |= XDRBUF_READ;
2410 encode_nops(&hdr);
2411 }
2412
2413 /*
2414 * Encode an SETATTR request
2415 */
2416 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2417 struct nfs_setattrargs *args)
2418 {
2419 struct compound_hdr hdr = {
2420 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2421 };
2422
2423 encode_compound_hdr(xdr, req, &hdr);
2424 encode_sequence(xdr, &args->seq_args, &hdr);
2425 encode_putfh(xdr, args->fh, &hdr);
2426 encode_setattr(xdr, args, args->server, &hdr);
2427 encode_getfattr(xdr, args->bitmask, &hdr);
2428 encode_nops(&hdr);
2429 }
2430
2431 /*
2432 * Encode a GETACL request
2433 */
2434 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2435 struct nfs_getaclargs *args)
2436 {
2437 struct compound_hdr hdr = {
2438 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2439 };
2440 uint32_t replen;
2441
2442 encode_compound_hdr(xdr, req, &hdr);
2443 encode_sequence(xdr, &args->seq_args, &hdr);
2444 encode_putfh(xdr, args->fh, &hdr);
2445 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
2446 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2447
2448 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2449 args->acl_pages, args->acl_pgbase, args->acl_len);
2450 encode_nops(&hdr);
2451 }
2452
2453 /*
2454 * Encode a WRITE request
2455 */
2456 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2457 struct nfs_writeargs *args)
2458 {
2459 struct compound_hdr hdr = {
2460 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2461 };
2462
2463 encode_compound_hdr(xdr, req, &hdr);
2464 encode_sequence(xdr, &args->seq_args, &hdr);
2465 encode_putfh(xdr, args->fh, &hdr);
2466 encode_write(xdr, args, &hdr);
2467 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2468 if (args->bitmask)
2469 encode_getfattr(xdr, args->bitmask, &hdr);
2470 encode_nops(&hdr);
2471 }
2472
2473 /*
2474 * a COMMIT request
2475 */
2476 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2477 struct nfs_writeargs *args)
2478 {
2479 struct compound_hdr hdr = {
2480 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2481 };
2482
2483 encode_compound_hdr(xdr, req, &hdr);
2484 encode_sequence(xdr, &args->seq_args, &hdr);
2485 encode_putfh(xdr, args->fh, &hdr);
2486 encode_commit(xdr, args, &hdr);
2487 if (args->bitmask)
2488 encode_getfattr(xdr, args->bitmask, &hdr);
2489 encode_nops(&hdr);
2490 }
2491
2492 /*
2493 * FSINFO request
2494 */
2495 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2496 struct nfs4_fsinfo_arg *args)
2497 {
2498 struct compound_hdr hdr = {
2499 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2500 };
2501
2502 encode_compound_hdr(xdr, req, &hdr);
2503 encode_sequence(xdr, &args->seq_args, &hdr);
2504 encode_putfh(xdr, args->fh, &hdr);
2505 encode_fsinfo(xdr, args->bitmask, &hdr);
2506 encode_nops(&hdr);
2507 }
2508
2509 /*
2510 * a PATHCONF request
2511 */
2512 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2513 const struct nfs4_pathconf_arg *args)
2514 {
2515 struct compound_hdr hdr = {
2516 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2517 };
2518
2519 encode_compound_hdr(xdr, req, &hdr);
2520 encode_sequence(xdr, &args->seq_args, &hdr);
2521 encode_putfh(xdr, args->fh, &hdr);
2522 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2523 &hdr);
2524 encode_nops(&hdr);
2525 }
2526
2527 /*
2528 * a STATFS request
2529 */
2530 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2531 const struct nfs4_statfs_arg *args)
2532 {
2533 struct compound_hdr hdr = {
2534 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2535 };
2536
2537 encode_compound_hdr(xdr, req, &hdr);
2538 encode_sequence(xdr, &args->seq_args, &hdr);
2539 encode_putfh(xdr, args->fh, &hdr);
2540 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2541 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2542 encode_nops(&hdr);
2543 }
2544
2545 /*
2546 * GETATTR_BITMAP request
2547 */
2548 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2549 struct xdr_stream *xdr,
2550 struct nfs4_server_caps_arg *args)
2551 {
2552 struct compound_hdr hdr = {
2553 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2554 };
2555
2556 encode_compound_hdr(xdr, req, &hdr);
2557 encode_sequence(xdr, &args->seq_args, &hdr);
2558 encode_putfh(xdr, args->fhandle, &hdr);
2559 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2560 FATTR4_WORD0_LINK_SUPPORT|
2561 FATTR4_WORD0_SYMLINK_SUPPORT|
2562 FATTR4_WORD0_ACLSUPPORT, &hdr);
2563 encode_nops(&hdr);
2564 }
2565
2566 /*
2567 * a RENEW request
2568 */
2569 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2570 struct nfs_client *clp)
2571 {
2572 struct compound_hdr hdr = {
2573 .nops = 0,
2574 };
2575
2576 encode_compound_hdr(xdr, req, &hdr);
2577 encode_renew(xdr, clp, &hdr);
2578 encode_nops(&hdr);
2579 }
2580
2581 /*
2582 * a SETCLIENTID request
2583 */
2584 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2585 struct xdr_stream *xdr,
2586 struct nfs4_setclientid *sc)
2587 {
2588 struct compound_hdr hdr = {
2589 .nops = 0,
2590 };
2591
2592 encode_compound_hdr(xdr, req, &hdr);
2593 encode_setclientid(xdr, sc, &hdr);
2594 encode_nops(&hdr);
2595 }
2596
2597 /*
2598 * a SETCLIENTID_CONFIRM request
2599 */
2600 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2601 struct xdr_stream *xdr,
2602 struct nfs4_setclientid_res *arg)
2603 {
2604 struct compound_hdr hdr = {
2605 .nops = 0,
2606 };
2607 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2608
2609 encode_compound_hdr(xdr, req, &hdr);
2610 encode_setclientid_confirm(xdr, arg, &hdr);
2611 encode_putrootfh(xdr, &hdr);
2612 encode_fsinfo(xdr, lease_bitmap, &hdr);
2613 encode_nops(&hdr);
2614 }
2615
2616 /*
2617 * DELEGRETURN request
2618 */
2619 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2620 struct xdr_stream *xdr,
2621 const struct nfs4_delegreturnargs *args)
2622 {
2623 struct compound_hdr hdr = {
2624 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2625 };
2626
2627 encode_compound_hdr(xdr, req, &hdr);
2628 encode_sequence(xdr, &args->seq_args, &hdr);
2629 encode_putfh(xdr, args->fhandle, &hdr);
2630 encode_delegreturn(xdr, args->stateid, &hdr);
2631 encode_getfattr(xdr, args->bitmask, &hdr);
2632 encode_nops(&hdr);
2633 }
2634
2635 /*
2636 * Encode FS_LOCATIONS request
2637 */
2638 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2639 struct xdr_stream *xdr,
2640 struct nfs4_fs_locations_arg *args)
2641 {
2642 struct compound_hdr hdr = {
2643 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2644 };
2645 uint32_t replen;
2646
2647 encode_compound_hdr(xdr, req, &hdr);
2648 encode_sequence(xdr, &args->seq_args, &hdr);
2649 encode_putfh(xdr, args->dir_fh, &hdr);
2650 encode_lookup(xdr, args->name, &hdr);
2651 replen = hdr.replen; /* get the attribute into args->page */
2652 encode_fs_locations(xdr, args->bitmask, &hdr);
2653
2654 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2655 0, PAGE_SIZE);
2656 encode_nops(&hdr);
2657 }
2658
2659 /*
2660 * Encode SECINFO request
2661 */
2662 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2663 struct xdr_stream *xdr,
2664 struct nfs4_secinfo_arg *args)
2665 {
2666 struct compound_hdr hdr = {
2667 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2668 };
2669
2670 encode_compound_hdr(xdr, req, &hdr);
2671 encode_sequence(xdr, &args->seq_args, &hdr);
2672 encode_putfh(xdr, args->dir_fh, &hdr);
2673 encode_secinfo(xdr, args->name, &hdr);
2674 encode_nops(&hdr);
2675 }
2676
2677 #if defined(CONFIG_NFS_V4_1)
2678 /*
2679 * EXCHANGE_ID request
2680 */
2681 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2682 struct xdr_stream *xdr,
2683 struct nfs41_exchange_id_args *args)
2684 {
2685 struct compound_hdr hdr = {
2686 .minorversion = args->client->cl_mvops->minor_version,
2687 };
2688
2689 encode_compound_hdr(xdr, req, &hdr);
2690 encode_exchange_id(xdr, args, &hdr);
2691 encode_nops(&hdr);
2692 }
2693
2694 /*
2695 * a CREATE_SESSION request
2696 */
2697 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2698 struct xdr_stream *xdr,
2699 struct nfs41_create_session_args *args)
2700 {
2701 struct compound_hdr hdr = {
2702 .minorversion = args->client->cl_mvops->minor_version,
2703 };
2704
2705 encode_compound_hdr(xdr, req, &hdr);
2706 encode_create_session(xdr, args, &hdr);
2707 encode_nops(&hdr);
2708 }
2709
2710 /*
2711 * a DESTROY_SESSION request
2712 */
2713 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2714 struct xdr_stream *xdr,
2715 struct nfs4_session *session)
2716 {
2717 struct compound_hdr hdr = {
2718 .minorversion = session->clp->cl_mvops->minor_version,
2719 };
2720
2721 encode_compound_hdr(xdr, req, &hdr);
2722 encode_destroy_session(xdr, session, &hdr);
2723 encode_nops(&hdr);
2724 }
2725
2726 /*
2727 * a SEQUENCE request
2728 */
2729 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2730 struct nfs4_sequence_args *args)
2731 {
2732 struct compound_hdr hdr = {
2733 .minorversion = nfs4_xdr_minorversion(args),
2734 };
2735
2736 encode_compound_hdr(xdr, req, &hdr);
2737 encode_sequence(xdr, args, &hdr);
2738 encode_nops(&hdr);
2739 }
2740
2741 /*
2742 * a GET_LEASE_TIME request
2743 */
2744 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2745 struct xdr_stream *xdr,
2746 struct nfs4_get_lease_time_args *args)
2747 {
2748 struct compound_hdr hdr = {
2749 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2750 };
2751 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2752
2753 encode_compound_hdr(xdr, req, &hdr);
2754 encode_sequence(xdr, &args->la_seq_args, &hdr);
2755 encode_putrootfh(xdr, &hdr);
2756 encode_fsinfo(xdr, lease_bitmap, &hdr);
2757 encode_nops(&hdr);
2758 }
2759
2760 /*
2761 * a RECLAIM_COMPLETE request
2762 */
2763 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2764 struct xdr_stream *xdr,
2765 struct nfs41_reclaim_complete_args *args)
2766 {
2767 struct compound_hdr hdr = {
2768 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2769 };
2770
2771 encode_compound_hdr(xdr, req, &hdr);
2772 encode_sequence(xdr, &args->seq_args, &hdr);
2773 encode_reclaim_complete(xdr, args, &hdr);
2774 encode_nops(&hdr);
2775 }
2776
2777 /*
2778 * Encode GETDEVICEINFO request
2779 */
2780 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2781 struct xdr_stream *xdr,
2782 struct nfs4_getdeviceinfo_args *args)
2783 {
2784 struct compound_hdr hdr = {
2785 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2786 };
2787
2788 encode_compound_hdr(xdr, req, &hdr);
2789 encode_sequence(xdr, &args->seq_args, &hdr);
2790 encode_getdeviceinfo(xdr, args, &hdr);
2791
2792 /* set up reply kvec. Subtract notification bitmap max size (2)
2793 * so that notification bitmap is put in xdr_buf tail */
2794 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2795 args->pdev->pages, args->pdev->pgbase,
2796 args->pdev->pglen);
2797
2798 encode_nops(&hdr);
2799 }
2800
2801 /*
2802 * Encode LAYOUTGET request
2803 */
2804 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2805 struct xdr_stream *xdr,
2806 struct nfs4_layoutget_args *args)
2807 {
2808 struct compound_hdr hdr = {
2809 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2810 };
2811
2812 encode_compound_hdr(xdr, req, &hdr);
2813 encode_sequence(xdr, &args->seq_args, &hdr);
2814 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2815 encode_layoutget(xdr, args, &hdr);
2816
2817 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2818 args->layout.pages, 0, args->layout.pglen);
2819
2820 encode_nops(&hdr);
2821 }
2822
2823 /*
2824 * Encode LAYOUTCOMMIT request
2825 */
2826 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2827 struct xdr_stream *xdr,
2828 struct nfs4_layoutcommit_args *args)
2829 {
2830 struct nfs4_layoutcommit_data *data =
2831 container_of(args, struct nfs4_layoutcommit_data, args);
2832 struct compound_hdr hdr = {
2833 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2834 };
2835
2836 encode_compound_hdr(xdr, req, &hdr);
2837 encode_sequence(xdr, &args->seq_args, &hdr);
2838 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2839 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2840 encode_getfattr(xdr, args->bitmask, &hdr);
2841 encode_nops(&hdr);
2842 }
2843
2844 /*
2845 * Encode LAYOUTRETURN request
2846 */
2847 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2848 struct xdr_stream *xdr,
2849 struct nfs4_layoutreturn_args *args)
2850 {
2851 struct compound_hdr hdr = {
2852 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2853 };
2854
2855 encode_compound_hdr(xdr, req, &hdr);
2856 encode_sequence(xdr, &args->seq_args, &hdr);
2857 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2858 encode_layoutreturn(xdr, args, &hdr);
2859 encode_nops(&hdr);
2860 }
2861
2862 /*
2863 * Encode SECINFO_NO_NAME request
2864 */
2865 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2866 struct xdr_stream *xdr,
2867 struct nfs41_secinfo_no_name_args *args)
2868 {
2869 struct compound_hdr hdr = {
2870 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2871 };
2872
2873 encode_compound_hdr(xdr, req, &hdr);
2874 encode_sequence(xdr, &args->seq_args, &hdr);
2875 encode_putrootfh(xdr, &hdr);
2876 encode_secinfo_no_name(xdr, args, &hdr);
2877 encode_nops(&hdr);
2878 return 0;
2879 }
2880
2881 /*
2882 * Encode TEST_STATEID request
2883 */
2884 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2885 struct xdr_stream *xdr,
2886 struct nfs41_test_stateid_args *args)
2887 {
2888 struct compound_hdr hdr = {
2889 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2890 };
2891
2892 encode_compound_hdr(xdr, req, &hdr);
2893 encode_sequence(xdr, &args->seq_args, &hdr);
2894 encode_test_stateid(xdr, args, &hdr);
2895 encode_nops(&hdr);
2896 }
2897
2898 /*
2899 * Encode FREE_STATEID request
2900 */
2901 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2902 struct xdr_stream *xdr,
2903 struct nfs41_free_stateid_args *args)
2904 {
2905 struct compound_hdr hdr = {
2906 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2907 };
2908
2909 encode_compound_hdr(xdr, req, &hdr);
2910 encode_sequence(xdr, &args->seq_args, &hdr);
2911 encode_free_stateid(xdr, args, &hdr);
2912 encode_nops(&hdr);
2913 }
2914 #endif /* CONFIG_NFS_V4_1 */
2915
2916 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2917 {
2918 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2919 "Remaining buffer length is %tu words.\n",
2920 func, xdr->end - xdr->p);
2921 }
2922
2923 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2924 {
2925 __be32 *p;
2926
2927 p = xdr_inline_decode(xdr, 4);
2928 if (unlikely(!p))
2929 goto out_overflow;
2930 *len = be32_to_cpup(p);
2931 p = xdr_inline_decode(xdr, *len);
2932 if (unlikely(!p))
2933 goto out_overflow;
2934 *string = (char *)p;
2935 return 0;
2936 out_overflow:
2937 print_overflow_msg(__func__, xdr);
2938 return -EIO;
2939 }
2940
2941 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2942 {
2943 __be32 *p;
2944
2945 p = xdr_inline_decode(xdr, 8);
2946 if (unlikely(!p))
2947 goto out_overflow;
2948 hdr->status = be32_to_cpup(p++);
2949 hdr->taglen = be32_to_cpup(p);
2950
2951 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2952 if (unlikely(!p))
2953 goto out_overflow;
2954 hdr->tag = (char *)p;
2955 p += XDR_QUADLEN(hdr->taglen);
2956 hdr->nops = be32_to_cpup(p);
2957 if (unlikely(hdr->nops < 1))
2958 return nfs4_stat_to_errno(hdr->status);
2959 return 0;
2960 out_overflow:
2961 print_overflow_msg(__func__, xdr);
2962 return -EIO;
2963 }
2964
2965 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2966 {
2967 __be32 *p;
2968 uint32_t opnum;
2969 int32_t nfserr;
2970
2971 p = xdr_inline_decode(xdr, 8);
2972 if (unlikely(!p))
2973 goto out_overflow;
2974 opnum = be32_to_cpup(p++);
2975 if (opnum != expected) {
2976 dprintk("nfs: Server returned operation"
2977 " %d but we issued a request for %d\n",
2978 opnum, expected);
2979 return -EIO;
2980 }
2981 nfserr = be32_to_cpup(p);
2982 if (nfserr != NFS_OK)
2983 return nfs4_stat_to_errno(nfserr);
2984 return 0;
2985 out_overflow:
2986 print_overflow_msg(__func__, xdr);
2987 return -EIO;
2988 }
2989
2990 /* Dummy routine */
2991 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2992 {
2993 __be32 *p;
2994 unsigned int strlen;
2995 char *str;
2996
2997 p = xdr_inline_decode(xdr, 12);
2998 if (likely(p))
2999 return decode_opaque_inline(xdr, &strlen, &str);
3000 print_overflow_msg(__func__, xdr);
3001 return -EIO;
3002 }
3003
3004 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3005 {
3006 uint32_t bmlen;
3007 __be32 *p;
3008
3009 p = xdr_inline_decode(xdr, 4);
3010 if (unlikely(!p))
3011 goto out_overflow;
3012 bmlen = be32_to_cpup(p);
3013
3014 bitmap[0] = bitmap[1] = 0;
3015 p = xdr_inline_decode(xdr, (bmlen << 2));
3016 if (unlikely(!p))
3017 goto out_overflow;
3018 if (bmlen > 0) {
3019 bitmap[0] = be32_to_cpup(p++);
3020 if (bmlen > 1)
3021 bitmap[1] = be32_to_cpup(p);
3022 }
3023 return 0;
3024 out_overflow:
3025 print_overflow_msg(__func__, xdr);
3026 return -EIO;
3027 }
3028
3029 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
3030 {
3031 __be32 *p;
3032
3033 p = xdr_inline_decode(xdr, 4);
3034 if (unlikely(!p))
3035 goto out_overflow;
3036 *attrlen = be32_to_cpup(p);
3037 *savep = xdr->p;
3038 return 0;
3039 out_overflow:
3040 print_overflow_msg(__func__, xdr);
3041 return -EIO;
3042 }
3043
3044 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3045 {
3046 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3047 int ret;
3048 ret = decode_attr_bitmap(xdr, bitmask);
3049 if (unlikely(ret < 0))
3050 return ret;
3051 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3052 } else
3053 bitmask[0] = bitmask[1] = 0;
3054 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
3055 return 0;
3056 }
3057
3058 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3059 {
3060 __be32 *p;
3061 int ret = 0;
3062
3063 *type = 0;
3064 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3065 return -EIO;
3066 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3067 p = xdr_inline_decode(xdr, 4);
3068 if (unlikely(!p))
3069 goto out_overflow;
3070 *type = be32_to_cpup(p);
3071 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3072 dprintk("%s: bad type %d\n", __func__, *type);
3073 return -EIO;
3074 }
3075 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3076 ret = NFS_ATTR_FATTR_TYPE;
3077 }
3078 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3079 return ret;
3080 out_overflow:
3081 print_overflow_msg(__func__, xdr);
3082 return -EIO;
3083 }
3084
3085 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3086 {
3087 __be32 *p;
3088 int ret = 0;
3089
3090 *change = 0;
3091 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3092 return -EIO;
3093 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3094 p = xdr_inline_decode(xdr, 8);
3095 if (unlikely(!p))
3096 goto out_overflow;
3097 xdr_decode_hyper(p, change);
3098 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3099 ret = NFS_ATTR_FATTR_CHANGE;
3100 }
3101 dprintk("%s: change attribute=%Lu\n", __func__,
3102 (unsigned long long)*change);
3103 return ret;
3104 out_overflow:
3105 print_overflow_msg(__func__, xdr);
3106 return -EIO;
3107 }
3108
3109 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3110 {
3111 __be32 *p;
3112 int ret = 0;
3113
3114 *size = 0;
3115 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3116 return -EIO;
3117 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3118 p = xdr_inline_decode(xdr, 8);
3119 if (unlikely(!p))
3120 goto out_overflow;
3121 xdr_decode_hyper(p, size);
3122 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3123 ret = NFS_ATTR_FATTR_SIZE;
3124 }
3125 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3126 return ret;
3127 out_overflow:
3128 print_overflow_msg(__func__, xdr);
3129 return -EIO;
3130 }
3131
3132 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3133 {
3134 __be32 *p;
3135
3136 *res = 0;
3137 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3138 return -EIO;
3139 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3140 p = xdr_inline_decode(xdr, 4);
3141 if (unlikely(!p))
3142 goto out_overflow;
3143 *res = be32_to_cpup(p);
3144 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3145 }
3146 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3147 return 0;
3148 out_overflow:
3149 print_overflow_msg(__func__, xdr);
3150 return -EIO;
3151 }
3152
3153 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3154 {
3155 __be32 *p;
3156
3157 *res = 0;
3158 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3159 return -EIO;
3160 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3161 p = xdr_inline_decode(xdr, 4);
3162 if (unlikely(!p))
3163 goto out_overflow;
3164 *res = be32_to_cpup(p);
3165 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3166 }
3167 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3168 return 0;
3169 out_overflow:
3170 print_overflow_msg(__func__, xdr);
3171 return -EIO;
3172 }
3173
3174 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3175 {
3176 __be32 *p;
3177 int ret = 0;
3178
3179 fsid->major = 0;
3180 fsid->minor = 0;
3181 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3182 return -EIO;
3183 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3184 p = xdr_inline_decode(xdr, 16);
3185 if (unlikely(!p))
3186 goto out_overflow;
3187 p = xdr_decode_hyper(p, &fsid->major);
3188 xdr_decode_hyper(p, &fsid->minor);
3189 bitmap[0] &= ~FATTR4_WORD0_FSID;
3190 ret = NFS_ATTR_FATTR_FSID;
3191 }
3192 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3193 (unsigned long long)fsid->major,
3194 (unsigned long long)fsid->minor);
3195 return ret;
3196 out_overflow:
3197 print_overflow_msg(__func__, xdr);
3198 return -EIO;
3199 }
3200
3201 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3202 {
3203 __be32 *p;
3204
3205 *res = 60;
3206 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3207 return -EIO;
3208 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3209 p = xdr_inline_decode(xdr, 4);
3210 if (unlikely(!p))
3211 goto out_overflow;
3212 *res = be32_to_cpup(p);
3213 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3214 }
3215 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3216 return 0;
3217 out_overflow:
3218 print_overflow_msg(__func__, xdr);
3219 return -EIO;
3220 }
3221
3222 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3223 {
3224 __be32 *p;
3225
3226 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3227 return -EIO;
3228 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3229 p = xdr_inline_decode(xdr, 4);
3230 if (unlikely(!p))
3231 goto out_overflow;
3232 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3233 *res = -be32_to_cpup(p);
3234 }
3235 return 0;
3236 out_overflow:
3237 print_overflow_msg(__func__, xdr);
3238 return -EIO;
3239 }
3240
3241 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3242 {
3243 __be32 *p;
3244 int len;
3245
3246 if (fh != NULL)
3247 memset(fh, 0, sizeof(*fh));
3248
3249 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3250 return -EIO;
3251 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3252 p = xdr_inline_decode(xdr, 4);
3253 if (unlikely(!p))
3254 goto out_overflow;
3255 len = be32_to_cpup(p);
3256 if (len > NFS4_FHSIZE)
3257 return -EIO;
3258 p = xdr_inline_decode(xdr, len);
3259 if (unlikely(!p))
3260 goto out_overflow;
3261 if (fh != NULL) {
3262 memcpy(fh->data, p, len);
3263 fh->size = len;
3264 }
3265 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3266 }
3267 return 0;
3268 out_overflow:
3269 print_overflow_msg(__func__, xdr);
3270 return -EIO;
3271 }
3272
3273 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3274 {
3275 __be32 *p;
3276
3277 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3278 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3279 return -EIO;
3280 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3281 p = xdr_inline_decode(xdr, 4);
3282 if (unlikely(!p))
3283 goto out_overflow;
3284 *res = be32_to_cpup(p);
3285 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3286 }
3287 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3288 return 0;
3289 out_overflow:
3290 print_overflow_msg(__func__, xdr);
3291 return -EIO;
3292 }
3293
3294 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3295 {
3296 __be32 *p;
3297 int ret = 0;
3298
3299 *fileid = 0;
3300 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3301 return -EIO;
3302 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3303 p = xdr_inline_decode(xdr, 8);
3304 if (unlikely(!p))
3305 goto out_overflow;
3306 xdr_decode_hyper(p, fileid);
3307 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3308 ret = NFS_ATTR_FATTR_FILEID;
3309 }
3310 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3311 return ret;
3312 out_overflow:
3313 print_overflow_msg(__func__, xdr);
3314 return -EIO;
3315 }
3316
3317 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3318 {
3319 __be32 *p;
3320 int ret = 0;
3321
3322 *fileid = 0;
3323 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3324 return -EIO;
3325 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3326 p = xdr_inline_decode(xdr, 8);
3327 if (unlikely(!p))
3328 goto out_overflow;
3329 xdr_decode_hyper(p, fileid);
3330 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3331 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3332 }
3333 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3334 return ret;
3335 out_overflow:
3336 print_overflow_msg(__func__, xdr);
3337 return -EIO;
3338 }
3339
3340 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3341 {
3342 __be32 *p;
3343 int status = 0;
3344
3345 *res = 0;
3346 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3347 return -EIO;
3348 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3349 p = xdr_inline_decode(xdr, 8);
3350 if (unlikely(!p))
3351 goto out_overflow;
3352 xdr_decode_hyper(p, res);
3353 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3354 }
3355 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3356 return status;
3357 out_overflow:
3358 print_overflow_msg(__func__, xdr);
3359 return -EIO;
3360 }
3361
3362 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3363 {
3364 __be32 *p;
3365 int status = 0;
3366
3367 *res = 0;
3368 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3369 return -EIO;
3370 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3371 p = xdr_inline_decode(xdr, 8);
3372 if (unlikely(!p))
3373 goto out_overflow;
3374 xdr_decode_hyper(p, res);
3375 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3376 }
3377 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3378 return status;
3379 out_overflow:
3380 print_overflow_msg(__func__, xdr);
3381 return -EIO;
3382 }
3383
3384 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3385 {
3386 __be32 *p;
3387 int status = 0;
3388
3389 *res = 0;
3390 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3391 return -EIO;
3392 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3393 p = xdr_inline_decode(xdr, 8);
3394 if (unlikely(!p))
3395 goto out_overflow;
3396 xdr_decode_hyper(p, res);
3397 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3398 }
3399 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3400 return status;
3401 out_overflow:
3402 print_overflow_msg(__func__, xdr);
3403 return -EIO;
3404 }
3405
3406 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3407 {
3408 u32 n;
3409 __be32 *p;
3410 int status = 0;
3411
3412 p = xdr_inline_decode(xdr, 4);
3413 if (unlikely(!p))
3414 goto out_overflow;
3415 n = be32_to_cpup(p);
3416 if (n == 0)
3417 goto root_path;
3418 dprintk("path ");
3419 path->ncomponents = 0;
3420 while (path->ncomponents < n) {
3421 struct nfs4_string *component = &path->components[path->ncomponents];
3422 status = decode_opaque_inline(xdr, &component->len, &component->data);
3423 if (unlikely(status != 0))
3424 goto out_eio;
3425 if (path->ncomponents != n)
3426 dprintk("/");
3427 dprintk("%s", component->data);
3428 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3429 path->ncomponents++;
3430 else {
3431 dprintk("cannot parse %d components in path\n", n);
3432 goto out_eio;
3433 }
3434 }
3435 out:
3436 dprintk("\n");
3437 return status;
3438 root_path:
3439 /* a root pathname is sent as a zero component4 */
3440 path->ncomponents = 1;
3441 path->components[0].len=0;
3442 path->components[0].data=NULL;
3443 dprintk("path /\n");
3444 goto out;
3445 out_eio:
3446 dprintk(" status %d", status);
3447 status = -EIO;
3448 goto out;
3449 out_overflow:
3450 print_overflow_msg(__func__, xdr);
3451 return -EIO;
3452 }
3453
3454 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3455 {
3456 int n;
3457 __be32 *p;
3458 int status = -EIO;
3459
3460 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3461 goto out;
3462 status = 0;
3463 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3464 goto out;
3465 dprintk("%s: fsroot ", __func__);
3466 status = decode_pathname(xdr, &res->fs_path);
3467 if (unlikely(status != 0))
3468 goto out;
3469 p = xdr_inline_decode(xdr, 4);
3470 if (unlikely(!p))
3471 goto out_overflow;
3472 n = be32_to_cpup(p);
3473 if (n <= 0)
3474 goto out_eio;
3475 res->nlocations = 0;
3476 while (res->nlocations < n) {
3477 u32 m;
3478 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3479
3480 p = xdr_inline_decode(xdr, 4);
3481 if (unlikely(!p))
3482 goto out_overflow;
3483 m = be32_to_cpup(p);
3484
3485 loc->nservers = 0;
3486 dprintk("%s: servers ", __func__);
3487 while (loc->nservers < m) {
3488 struct nfs4_string *server = &loc->servers[loc->nservers];
3489 status = decode_opaque_inline(xdr, &server->len, &server->data);
3490 if (unlikely(status != 0))
3491 goto out_eio;
3492 dprintk("%s ", server->data);
3493 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3494 loc->nservers++;
3495 else {
3496 unsigned int i;
3497 dprintk("%s: using first %u of %u servers "
3498 "returned for location %u\n",
3499 __func__,
3500 NFS4_FS_LOCATION_MAXSERVERS,
3501 m, res->nlocations);
3502 for (i = loc->nservers; i < m; i++) {
3503 unsigned int len;
3504 char *data;
3505 status = decode_opaque_inline(xdr, &len, &data);
3506 if (unlikely(status != 0))
3507 goto out_eio;
3508 }
3509 }
3510 }
3511 status = decode_pathname(xdr, &loc->rootpath);
3512 if (unlikely(status != 0))
3513 goto out_eio;
3514 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3515 res->nlocations++;
3516 }
3517 if (res->nlocations != 0)
3518 status = NFS_ATTR_FATTR_V4_REFERRAL;
3519 out:
3520 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3521 return status;
3522 out_overflow:
3523 print_overflow_msg(__func__, xdr);
3524 out_eio:
3525 status = -EIO;
3526 goto out;
3527 }
3528
3529 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3530 {
3531 __be32 *p;
3532 int status = 0;
3533
3534 *res = 0;
3535 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3536 return -EIO;
3537 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3538 p = xdr_inline_decode(xdr, 8);
3539 if (unlikely(!p))
3540 goto out_overflow;
3541 xdr_decode_hyper(p, res);
3542 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3543 }
3544 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3545 return status;
3546 out_overflow:
3547 print_overflow_msg(__func__, xdr);
3548 return -EIO;
3549 }
3550
3551 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3552 {
3553 __be32 *p;
3554 int status = 0;
3555
3556 *maxlink = 1;
3557 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3558 return -EIO;
3559 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3560 p = xdr_inline_decode(xdr, 4);
3561 if (unlikely(!p))
3562 goto out_overflow;
3563 *maxlink = be32_to_cpup(p);
3564 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3565 }
3566 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3567 return status;
3568 out_overflow:
3569 print_overflow_msg(__func__, xdr);
3570 return -EIO;
3571 }
3572
3573 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3574 {
3575 __be32 *p;
3576 int status = 0;
3577
3578 *maxname = 1024;
3579 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3580 return -EIO;
3581 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3582 p = xdr_inline_decode(xdr, 4);
3583 if (unlikely(!p))
3584 goto out_overflow;
3585 *maxname = be32_to_cpup(p);
3586 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3587 }
3588 dprintk("%s: maxname=%u\n", __func__, *maxname);
3589 return status;
3590 out_overflow:
3591 print_overflow_msg(__func__, xdr);
3592 return -EIO;
3593 }
3594
3595 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3596 {
3597 __be32 *p;
3598 int status = 0;
3599
3600 *res = 1024;
3601 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3602 return -EIO;
3603 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3604 uint64_t maxread;
3605 p = xdr_inline_decode(xdr, 8);
3606 if (unlikely(!p))
3607 goto out_overflow;
3608 xdr_decode_hyper(p, &maxread);
3609 if (maxread > 0x7FFFFFFF)
3610 maxread = 0x7FFFFFFF;
3611 *res = (uint32_t)maxread;
3612 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3613 }
3614 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3615 return status;
3616 out_overflow:
3617 print_overflow_msg(__func__, xdr);
3618 return -EIO;
3619 }
3620
3621 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3622 {
3623 __be32 *p;
3624 int status = 0;
3625
3626 *res = 1024;
3627 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3628 return -EIO;
3629 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3630 uint64_t maxwrite;
3631 p = xdr_inline_decode(xdr, 8);
3632 if (unlikely(!p))
3633 goto out_overflow;
3634 xdr_decode_hyper(p, &maxwrite);
3635 if (maxwrite > 0x7FFFFFFF)
3636 maxwrite = 0x7FFFFFFF;
3637 *res = (uint32_t)maxwrite;
3638 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3639 }
3640 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3641 return status;
3642 out_overflow:
3643 print_overflow_msg(__func__, xdr);
3644 return -EIO;
3645 }
3646
3647 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3648 {
3649 uint32_t tmp;
3650 __be32 *p;
3651 int ret = 0;
3652
3653 *mode = 0;
3654 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3655 return -EIO;
3656 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3657 p = xdr_inline_decode(xdr, 4);
3658 if (unlikely(!p))
3659 goto out_overflow;
3660 tmp = be32_to_cpup(p);
3661 *mode = tmp & ~S_IFMT;
3662 bitmap[1] &= ~FATTR4_WORD1_MODE;
3663 ret = NFS_ATTR_FATTR_MODE;
3664 }
3665 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3666 return ret;
3667 out_overflow:
3668 print_overflow_msg(__func__, xdr);
3669 return -EIO;
3670 }
3671
3672 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3673 {
3674 __be32 *p;
3675 int ret = 0;
3676
3677 *nlink = 1;
3678 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3679 return -EIO;
3680 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3681 p = xdr_inline_decode(xdr, 4);
3682 if (unlikely(!p))
3683 goto out_overflow;
3684 *nlink = be32_to_cpup(p);
3685 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3686 ret = NFS_ATTR_FATTR_NLINK;
3687 }
3688 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3689 return ret;
3690 out_overflow:
3691 print_overflow_msg(__func__, xdr);
3692 return -EIO;
3693 }
3694
3695 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3696 const struct nfs_server *server, uint32_t *uid, int may_sleep)
3697 {
3698 uint32_t len;
3699 __be32 *p;
3700 int ret = 0;
3701
3702 *uid = -2;
3703 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3704 return -EIO;
3705 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3706 p = xdr_inline_decode(xdr, 4);
3707 if (unlikely(!p))
3708 goto out_overflow;
3709 len = be32_to_cpup(p);
3710 p = xdr_inline_decode(xdr, len);
3711 if (unlikely(!p))
3712 goto out_overflow;
3713 if (!may_sleep) {
3714 /* do nothing */
3715 } else if (len < XDR_MAX_NETOBJ) {
3716 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3717 ret = NFS_ATTR_FATTR_OWNER;
3718 else
3719 dprintk("%s: nfs_map_name_to_uid failed!\n",
3720 __func__);
3721 } else
3722 dprintk("%s: name too long (%u)!\n",
3723 __func__, len);
3724 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3725 }
3726 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3727 return ret;
3728 out_overflow:
3729 print_overflow_msg(__func__, xdr);
3730 return -EIO;
3731 }
3732
3733 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3734 const struct nfs_server *server, uint32_t *gid, int may_sleep)
3735 {
3736 uint32_t len;
3737 __be32 *p;
3738 int ret = 0;
3739
3740 *gid = -2;
3741 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3742 return -EIO;
3743 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3744 p = xdr_inline_decode(xdr, 4);
3745 if (unlikely(!p))
3746 goto out_overflow;
3747 len = be32_to_cpup(p);
3748 p = xdr_inline_decode(xdr, len);
3749 if (unlikely(!p))
3750 goto out_overflow;
3751 if (!may_sleep) {
3752 /* do nothing */
3753 } else if (len < XDR_MAX_NETOBJ) {
3754 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3755 ret = NFS_ATTR_FATTR_GROUP;
3756 else
3757 dprintk("%s: nfs_map_group_to_gid failed!\n",
3758 __func__);
3759 } else
3760 dprintk("%s: name too long (%u)!\n",
3761 __func__, len);
3762 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3763 }
3764 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3765 return ret;
3766 out_overflow:
3767 print_overflow_msg(__func__, xdr);
3768 return -EIO;
3769 }
3770
3771 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3772 {
3773 uint32_t major = 0, minor = 0;
3774 __be32 *p;
3775 int ret = 0;
3776
3777 *rdev = MKDEV(0,0);
3778 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3779 return -EIO;
3780 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3781 dev_t tmp;
3782
3783 p = xdr_inline_decode(xdr, 8);
3784 if (unlikely(!p))
3785 goto out_overflow;
3786 major = be32_to_cpup(p++);
3787 minor = be32_to_cpup(p);
3788 tmp = MKDEV(major, minor);
3789 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3790 *rdev = tmp;
3791 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3792 ret = NFS_ATTR_FATTR_RDEV;
3793 }
3794 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3795 return ret;
3796 out_overflow:
3797 print_overflow_msg(__func__, xdr);
3798 return -EIO;
3799 }
3800
3801 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3802 {
3803 __be32 *p;
3804 int status = 0;
3805
3806 *res = 0;
3807 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3808 return -EIO;
3809 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3810 p = xdr_inline_decode(xdr, 8);
3811 if (unlikely(!p))
3812 goto out_overflow;
3813 xdr_decode_hyper(p, res);
3814 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3815 }
3816 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3817 return status;
3818 out_overflow:
3819 print_overflow_msg(__func__, xdr);
3820 return -EIO;
3821 }
3822
3823 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3824 {
3825 __be32 *p;
3826 int status = 0;
3827
3828 *res = 0;
3829 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3830 return -EIO;
3831 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3832 p = xdr_inline_decode(xdr, 8);
3833 if (unlikely(!p))
3834 goto out_overflow;
3835 xdr_decode_hyper(p, res);
3836 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3837 }
3838 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3839 return status;
3840 out_overflow:
3841 print_overflow_msg(__func__, xdr);
3842 return -EIO;
3843 }
3844
3845 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3846 {
3847 __be32 *p;
3848 int status = 0;
3849
3850 *res = 0;
3851 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3852 return -EIO;
3853 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3854 p = xdr_inline_decode(xdr, 8);
3855 if (unlikely(!p))
3856 goto out_overflow;
3857 xdr_decode_hyper(p, res);
3858 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3859 }
3860 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3861 return status;
3862 out_overflow:
3863 print_overflow_msg(__func__, xdr);
3864 return -EIO;
3865 }
3866
3867 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3868 {
3869 __be32 *p;
3870 int ret = 0;
3871
3872 *used = 0;
3873 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3874 return -EIO;
3875 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3876 p = xdr_inline_decode(xdr, 8);
3877 if (unlikely(!p))
3878 goto out_overflow;
3879 xdr_decode_hyper(p, used);
3880 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3881 ret = NFS_ATTR_FATTR_SPACE_USED;
3882 }
3883 dprintk("%s: space used=%Lu\n", __func__,
3884 (unsigned long long)*used);
3885 return ret;
3886 out_overflow:
3887 print_overflow_msg(__func__, xdr);
3888 return -EIO;
3889 }
3890
3891 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3892 {
3893 __be32 *p;
3894 uint64_t sec;
3895 uint32_t nsec;
3896
3897 p = xdr_inline_decode(xdr, 12);
3898 if (unlikely(!p))
3899 goto out_overflow;
3900 p = xdr_decode_hyper(p, &sec);
3901 nsec = be32_to_cpup(p);
3902 time->tv_sec = (time_t)sec;
3903 time->tv_nsec = (long)nsec;
3904 return 0;
3905 out_overflow:
3906 print_overflow_msg(__func__, xdr);
3907 return -EIO;
3908 }
3909
3910 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3911 {
3912 int status = 0;
3913
3914 time->tv_sec = 0;
3915 time->tv_nsec = 0;
3916 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3917 return -EIO;
3918 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3919 status = decode_attr_time(xdr, time);
3920 if (status == 0)
3921 status = NFS_ATTR_FATTR_ATIME;
3922 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3923 }
3924 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3925 return status;
3926 }
3927
3928 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3929 {
3930 int status = 0;
3931
3932 time->tv_sec = 0;
3933 time->tv_nsec = 0;
3934 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3935 return -EIO;
3936 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3937 status = decode_attr_time(xdr, time);
3938 if (status == 0)
3939 status = NFS_ATTR_FATTR_CTIME;
3940 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3941 }
3942 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3943 return status;
3944 }
3945
3946 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
3947 struct timespec *time)
3948 {
3949 int status = 0;
3950
3951 time->tv_sec = 0;
3952 time->tv_nsec = 0;
3953 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
3954 return -EIO;
3955 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
3956 status = decode_attr_time(xdr, time);
3957 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
3958 }
3959 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
3960 (long)time->tv_nsec);
3961 return status;
3962 }
3963
3964 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3965 {
3966 int status = 0;
3967
3968 time->tv_sec = 0;
3969 time->tv_nsec = 0;
3970 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3971 return -EIO;
3972 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3973 status = decode_attr_time(xdr, time);
3974 if (status == 0)
3975 status = NFS_ATTR_FATTR_MTIME;
3976 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3977 }
3978 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3979 return status;
3980 }
3981
3982 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3983 {
3984 unsigned int attrwords = XDR_QUADLEN(attrlen);
3985 unsigned int nwords = xdr->p - savep;
3986
3987 if (unlikely(attrwords != nwords)) {
3988 dprintk("%s: server returned incorrect attribute length: "
3989 "%u %c %u\n",
3990 __func__,
3991 attrwords << 2,
3992 (attrwords < nwords) ? '<' : '>',
3993 nwords << 2);
3994 return -EIO;
3995 }
3996 return 0;
3997 }
3998
3999 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4000 {
4001 __be32 *p;
4002
4003 p = xdr_inline_decode(xdr, 20);
4004 if (unlikely(!p))
4005 goto out_overflow;
4006 cinfo->atomic = be32_to_cpup(p++);
4007 p = xdr_decode_hyper(p, &cinfo->before);
4008 xdr_decode_hyper(p, &cinfo->after);
4009 return 0;
4010 out_overflow:
4011 print_overflow_msg(__func__, xdr);
4012 return -EIO;
4013 }
4014
4015 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
4016 {
4017 __be32 *p;
4018 uint32_t supp, acc;
4019 int status;
4020
4021 status = decode_op_hdr(xdr, OP_ACCESS);
4022 if (status)
4023 return status;
4024 p = xdr_inline_decode(xdr, 8);
4025 if (unlikely(!p))
4026 goto out_overflow;
4027 supp = be32_to_cpup(p++);
4028 acc = be32_to_cpup(p);
4029 access->supported = supp;
4030 access->access = acc;
4031 return 0;
4032 out_overflow:
4033 print_overflow_msg(__func__, xdr);
4034 return -EIO;
4035 }
4036
4037 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4038 {
4039 __be32 *p;
4040
4041 p = xdr_inline_decode(xdr, len);
4042 if (likely(p)) {
4043 memcpy(buf, p, len);
4044 return 0;
4045 }
4046 print_overflow_msg(__func__, xdr);
4047 return -EIO;
4048 }
4049
4050 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4051 {
4052 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
4053 }
4054
4055 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4056 {
4057 int status;
4058
4059 status = decode_op_hdr(xdr, OP_CLOSE);
4060 if (status != -EIO)
4061 nfs_increment_open_seqid(status, res->seqid);
4062 if (!status)
4063 status = decode_stateid(xdr, &res->stateid);
4064 return status;
4065 }
4066
4067 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4068 {
4069 return decode_opaque_fixed(xdr, verifier, 8);
4070 }
4071
4072 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
4073 {
4074 int status;
4075
4076 status = decode_op_hdr(xdr, OP_COMMIT);
4077 if (!status)
4078 status = decode_verifier(xdr, res->verf->verifier);
4079 return status;
4080 }
4081
4082 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4083 {
4084 __be32 *p;
4085 uint32_t bmlen;
4086 int status;
4087
4088 status = decode_op_hdr(xdr, OP_CREATE);
4089 if (status)
4090 return status;
4091 if ((status = decode_change_info(xdr, cinfo)))
4092 return status;
4093 p = xdr_inline_decode(xdr, 4);
4094 if (unlikely(!p))
4095 goto out_overflow;
4096 bmlen = be32_to_cpup(p);
4097 p = xdr_inline_decode(xdr, bmlen << 2);
4098 if (likely(p))
4099 return 0;
4100 out_overflow:
4101 print_overflow_msg(__func__, xdr);
4102 return -EIO;
4103 }
4104
4105 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4106 {
4107 __be32 *savep;
4108 uint32_t attrlen, bitmap[2] = {0};
4109 int status;
4110
4111 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4112 goto xdr_error;
4113 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4114 goto xdr_error;
4115 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4116 goto xdr_error;
4117 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4118 goto xdr_error;
4119 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4120 goto xdr_error;
4121 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4122 goto xdr_error;
4123 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4124 goto xdr_error;
4125 status = verify_attr_len(xdr, savep, attrlen);
4126 xdr_error:
4127 dprintk("%s: xdr returned %d!\n", __func__, -status);
4128 return status;
4129 }
4130
4131 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4132 {
4133 __be32 *savep;
4134 uint32_t attrlen, bitmap[2] = {0};
4135 int status;
4136
4137 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4138 goto xdr_error;
4139 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4140 goto xdr_error;
4141 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4142 goto xdr_error;
4143
4144 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4145 goto xdr_error;
4146 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4147 goto xdr_error;
4148 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4149 goto xdr_error;
4150 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4151 goto xdr_error;
4152 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4153 goto xdr_error;
4154 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4155 goto xdr_error;
4156
4157 status = verify_attr_len(xdr, savep, attrlen);
4158 xdr_error:
4159 dprintk("%s: xdr returned %d!\n", __func__, -status);
4160 return status;
4161 }
4162
4163 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4164 {
4165 __be32 *savep;
4166 uint32_t attrlen, bitmap[2] = {0};
4167 int status;
4168
4169 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4170 goto xdr_error;
4171 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4172 goto xdr_error;
4173 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4174 goto xdr_error;
4175
4176 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4177 goto xdr_error;
4178 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4179 goto xdr_error;
4180
4181 status = verify_attr_len(xdr, savep, attrlen);
4182 xdr_error:
4183 dprintk("%s: xdr returned %d!\n", __func__, -status);
4184 return status;
4185 }
4186
4187 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4188 struct nfs_fattr *fattr, struct nfs_fh *fh,
4189 const struct nfs_server *server, int may_sleep)
4190 {
4191 int status;
4192 umode_t fmode = 0;
4193 uint32_t type;
4194 int32_t err;
4195
4196 status = decode_attr_type(xdr, bitmap, &type);
4197 if (status < 0)
4198 goto xdr_error;
4199 fattr->mode = 0;
4200 if (status != 0) {
4201 fattr->mode |= nfs_type2fmt[type];
4202 fattr->valid |= status;
4203 }
4204
4205 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4206 if (status < 0)
4207 goto xdr_error;
4208 fattr->valid |= status;
4209
4210 status = decode_attr_size(xdr, bitmap, &fattr->size);
4211 if (status < 0)
4212 goto xdr_error;
4213 fattr->valid |= status;
4214
4215 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4216 if (status < 0)
4217 goto xdr_error;
4218 fattr->valid |= status;
4219
4220 err = 0;
4221 status = decode_attr_error(xdr, bitmap, &err);
4222 if (status < 0)
4223 goto xdr_error;
4224 if (err == -NFS4ERR_WRONGSEC)
4225 nfs_fixup_secinfo_attributes(fattr, fh);
4226
4227 status = decode_attr_filehandle(xdr, bitmap, fh);
4228 if (status < 0)
4229 goto xdr_error;
4230
4231 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4232 if (status < 0)
4233 goto xdr_error;
4234 fattr->valid |= status;
4235
4236 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
4237 struct nfs4_fs_locations,
4238 fattr));
4239 if (status < 0)
4240 goto xdr_error;
4241 fattr->valid |= status;
4242
4243 status = decode_attr_mode(xdr, bitmap, &fmode);
4244 if (status < 0)
4245 goto xdr_error;
4246 if (status != 0) {
4247 fattr->mode |= fmode;
4248 fattr->valid |= status;
4249 }
4250
4251 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4252 if (status < 0)
4253 goto xdr_error;
4254 fattr->valid |= status;
4255
4256 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, may_sleep);
4257 if (status < 0)
4258 goto xdr_error;
4259 fattr->valid |= status;
4260
4261 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, may_sleep);
4262 if (status < 0)
4263 goto xdr_error;
4264 fattr->valid |= status;
4265
4266 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4267 if (status < 0)
4268 goto xdr_error;
4269 fattr->valid |= status;
4270
4271 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4272 if (status < 0)
4273 goto xdr_error;
4274 fattr->valid |= status;
4275
4276 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4277 if (status < 0)
4278 goto xdr_error;
4279 fattr->valid |= status;
4280
4281 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4282 if (status < 0)
4283 goto xdr_error;
4284 fattr->valid |= status;
4285
4286 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4287 if (status < 0)
4288 goto xdr_error;
4289 fattr->valid |= status;
4290
4291 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4292 if (status < 0)
4293 goto xdr_error;
4294 fattr->valid |= status;
4295
4296 xdr_error:
4297 dprintk("%s: xdr returned %d\n", __func__, -status);
4298 return status;
4299 }
4300
4301 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4302 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
4303 {
4304 __be32 *savep;
4305 uint32_t attrlen,
4306 bitmap[2] = {0};
4307 int status;
4308
4309 status = decode_op_hdr(xdr, OP_GETATTR);
4310 if (status < 0)
4311 goto xdr_error;
4312
4313 status = decode_attr_bitmap(xdr, bitmap);
4314 if (status < 0)
4315 goto xdr_error;
4316
4317 status = decode_attr_length(xdr, &attrlen, &savep);
4318 if (status < 0)
4319 goto xdr_error;
4320
4321 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
4322 if (status < 0)
4323 goto xdr_error;
4324
4325 status = verify_attr_len(xdr, savep, attrlen);
4326 xdr_error:
4327 dprintk("%s: xdr returned %d\n", __func__, -status);
4328 return status;
4329 }
4330
4331 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4332 const struct nfs_server *server, int may_sleep)
4333 {
4334 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
4335 }
4336
4337 /*
4338 * Decode potentially multiple layout types. Currently we only support
4339 * one layout driver per file system.
4340 */
4341 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4342 uint32_t *layouttype)
4343 {
4344 uint32_t *p;
4345 int num;
4346
4347 p = xdr_inline_decode(xdr, 4);
4348 if (unlikely(!p))
4349 goto out_overflow;
4350 num = be32_to_cpup(p);
4351
4352 /* pNFS is not supported by the underlying file system */
4353 if (num == 0) {
4354 *layouttype = 0;
4355 return 0;
4356 }
4357 if (num > 1)
4358 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
4359 "per filesystem not supported\n", __func__);
4360
4361 /* Decode and set first layout type, move xdr->p past unused types */
4362 p = xdr_inline_decode(xdr, num * 4);
4363 if (unlikely(!p))
4364 goto out_overflow;
4365 *layouttype = be32_to_cpup(p);
4366 return 0;
4367 out_overflow:
4368 print_overflow_msg(__func__, xdr);
4369 return -EIO;
4370 }
4371
4372 /*
4373 * The type of file system exported.
4374 * Note we must ensure that layouttype is set in any non-error case.
4375 */
4376 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4377 uint32_t *layouttype)
4378 {
4379 int status = 0;
4380
4381 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4382 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4383 return -EIO;
4384 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4385 status = decode_first_pnfs_layout_type(xdr, layouttype);
4386 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4387 } else
4388 *layouttype = 0;
4389 return status;
4390 }
4391
4392 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4393 {
4394 __be32 *savep;
4395 uint32_t attrlen, bitmap[2];
4396 int status;
4397
4398 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4399 goto xdr_error;
4400 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4401 goto xdr_error;
4402 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4403 goto xdr_error;
4404
4405 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4406
4407 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4408 goto xdr_error;
4409 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4410 goto xdr_error;
4411 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4412 goto xdr_error;
4413 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4414 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4415 goto xdr_error;
4416 fsinfo->wtpref = fsinfo->wtmax;
4417 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4418 if (status != 0)
4419 goto xdr_error;
4420 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4421 if (status != 0)
4422 goto xdr_error;
4423
4424 status = verify_attr_len(xdr, savep, attrlen);
4425 xdr_error:
4426 dprintk("%s: xdr returned %d!\n", __func__, -status);
4427 return status;
4428 }
4429
4430 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4431 {
4432 __be32 *p;
4433 uint32_t len;
4434 int status;
4435
4436 /* Zero handle first to allow comparisons */
4437 memset(fh, 0, sizeof(*fh));
4438
4439 status = decode_op_hdr(xdr, OP_GETFH);
4440 if (status)
4441 return status;
4442
4443 p = xdr_inline_decode(xdr, 4);
4444 if (unlikely(!p))
4445 goto out_overflow;
4446 len = be32_to_cpup(p);
4447 if (len > NFS4_FHSIZE)
4448 return -EIO;
4449 fh->size = len;
4450 p = xdr_inline_decode(xdr, len);
4451 if (unlikely(!p))
4452 goto out_overflow;
4453 memcpy(fh->data, p, len);
4454 return 0;
4455 out_overflow:
4456 print_overflow_msg(__func__, xdr);
4457 return -EIO;
4458 }
4459
4460 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4461 {
4462 int status;
4463
4464 status = decode_op_hdr(xdr, OP_LINK);
4465 if (status)
4466 return status;
4467 return decode_change_info(xdr, cinfo);
4468 }
4469
4470 /*
4471 * We create the owner, so we know a proper owner.id length is 4.
4472 */
4473 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4474 {
4475 uint64_t offset, length, clientid;
4476 __be32 *p;
4477 uint32_t namelen, type;
4478
4479 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4480 if (unlikely(!p))
4481 goto out_overflow;
4482 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4483 p = xdr_decode_hyper(p, &length);
4484 type = be32_to_cpup(p++); /* 4 byte read */
4485 if (fl != NULL) { /* manipulate file lock */
4486 fl->fl_start = (loff_t)offset;
4487 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4488 if (length == ~(uint64_t)0)
4489 fl->fl_end = OFFSET_MAX;
4490 fl->fl_type = F_WRLCK;
4491 if (type & 1)
4492 fl->fl_type = F_RDLCK;
4493 fl->fl_pid = 0;
4494 }
4495 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4496 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4497 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4498 if (likely(p))
4499 return -NFS4ERR_DENIED;
4500 out_overflow:
4501 print_overflow_msg(__func__, xdr);
4502 return -EIO;
4503 }
4504
4505 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4506 {
4507 int status;
4508
4509 status = decode_op_hdr(xdr, OP_LOCK);
4510 if (status == -EIO)
4511 goto out;
4512 if (status == 0) {
4513 status = decode_stateid(xdr, &res->stateid);
4514 if (unlikely(status))
4515 goto out;
4516 } else if (status == -NFS4ERR_DENIED)
4517 status = decode_lock_denied(xdr, NULL);
4518 if (res->open_seqid != NULL)
4519 nfs_increment_open_seqid(status, res->open_seqid);
4520 nfs_increment_lock_seqid(status, res->lock_seqid);
4521 out:
4522 return status;
4523 }
4524
4525 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4526 {
4527 int status;
4528 status = decode_op_hdr(xdr, OP_LOCKT);
4529 if (status == -NFS4ERR_DENIED)
4530 return decode_lock_denied(xdr, res->denied);
4531 return status;
4532 }
4533
4534 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4535 {
4536 int status;
4537
4538 status = decode_op_hdr(xdr, OP_LOCKU);
4539 if (status != -EIO)
4540 nfs_increment_lock_seqid(status, res->seqid);
4541 if (status == 0)
4542 status = decode_stateid(xdr, &res->stateid);
4543 return status;
4544 }
4545
4546 static int decode_release_lockowner(struct xdr_stream *xdr)
4547 {
4548 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4549 }
4550
4551 static int decode_lookup(struct xdr_stream *xdr)
4552 {
4553 return decode_op_hdr(xdr, OP_LOOKUP);
4554 }
4555
4556 /* This is too sick! */
4557 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4558 {
4559 __be32 *p;
4560 uint32_t limit_type, nblocks, blocksize;
4561
4562 p = xdr_inline_decode(xdr, 12);
4563 if (unlikely(!p))
4564 goto out_overflow;
4565 limit_type = be32_to_cpup(p++);
4566 switch (limit_type) {
4567 case 1:
4568 xdr_decode_hyper(p, maxsize);
4569 break;
4570 case 2:
4571 nblocks = be32_to_cpup(p++);
4572 blocksize = be32_to_cpup(p);
4573 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4574 }
4575 return 0;
4576 out_overflow:
4577 print_overflow_msg(__func__, xdr);
4578 return -EIO;
4579 }
4580
4581 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4582 {
4583 __be32 *p;
4584 uint32_t delegation_type;
4585 int status;
4586
4587 p = xdr_inline_decode(xdr, 4);
4588 if (unlikely(!p))
4589 goto out_overflow;
4590 delegation_type = be32_to_cpup(p);
4591 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4592 res->delegation_type = 0;
4593 return 0;
4594 }
4595 status = decode_stateid(xdr, &res->delegation);
4596 if (unlikely(status))
4597 return status;
4598 p = xdr_inline_decode(xdr, 4);
4599 if (unlikely(!p))
4600 goto out_overflow;
4601 res->do_recall = be32_to_cpup(p);
4602
4603 switch (delegation_type) {
4604 case NFS4_OPEN_DELEGATE_READ:
4605 res->delegation_type = FMODE_READ;
4606 break;
4607 case NFS4_OPEN_DELEGATE_WRITE:
4608 res->delegation_type = FMODE_WRITE|FMODE_READ;
4609 if (decode_space_limit(xdr, &res->maxsize) < 0)
4610 return -EIO;
4611 }
4612 return decode_ace(xdr, NULL, res->server->nfs_client);
4613 out_overflow:
4614 print_overflow_msg(__func__, xdr);
4615 return -EIO;
4616 }
4617
4618 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4619 {
4620 __be32 *p;
4621 uint32_t savewords, bmlen, i;
4622 int status;
4623
4624 status = decode_op_hdr(xdr, OP_OPEN);
4625 if (status != -EIO)
4626 nfs_increment_open_seqid(status, res->seqid);
4627 if (!status)
4628 status = decode_stateid(xdr, &res->stateid);
4629 if (unlikely(status))
4630 return status;
4631
4632 decode_change_info(xdr, &res->cinfo);
4633
4634 p = xdr_inline_decode(xdr, 8);
4635 if (unlikely(!p))
4636 goto out_overflow;
4637 res->rflags = be32_to_cpup(p++);
4638 bmlen = be32_to_cpup(p);
4639 if (bmlen > 10)
4640 goto xdr_error;
4641
4642 p = xdr_inline_decode(xdr, bmlen << 2);
4643 if (unlikely(!p))
4644 goto out_overflow;
4645 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4646 for (i = 0; i < savewords; ++i)
4647 res->attrset[i] = be32_to_cpup(p++);
4648 for (; i < NFS4_BITMAP_SIZE; i++)
4649 res->attrset[i] = 0;
4650
4651 return decode_delegation(xdr, res);
4652 xdr_error:
4653 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4654 return -EIO;
4655 out_overflow:
4656 print_overflow_msg(__func__, xdr);
4657 return -EIO;
4658 }
4659
4660 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4661 {
4662 int status;
4663
4664 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4665 if (status != -EIO)
4666 nfs_increment_open_seqid(status, res->seqid);
4667 if (!status)
4668 status = decode_stateid(xdr, &res->stateid);
4669 return status;
4670 }
4671
4672 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4673 {
4674 int status;
4675
4676 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4677 if (status != -EIO)
4678 nfs_increment_open_seqid(status, res->seqid);
4679 if (!status)
4680 status = decode_stateid(xdr, &res->stateid);
4681 return status;
4682 }
4683
4684 static int decode_putfh(struct xdr_stream *xdr)
4685 {
4686 return decode_op_hdr(xdr, OP_PUTFH);
4687 }
4688
4689 static int decode_putrootfh(struct xdr_stream *xdr)
4690 {
4691 return decode_op_hdr(xdr, OP_PUTROOTFH);
4692 }
4693
4694 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4695 {
4696 struct kvec *iov = req->rq_rcv_buf.head;
4697 __be32 *p;
4698 uint32_t count, eof, recvd, hdrlen;
4699 int status;
4700
4701 status = decode_op_hdr(xdr, OP_READ);
4702 if (status)
4703 return status;
4704 p = xdr_inline_decode(xdr, 8);
4705 if (unlikely(!p))
4706 goto out_overflow;
4707 eof = be32_to_cpup(p++);
4708 count = be32_to_cpup(p);
4709 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
4710 recvd = req->rq_rcv_buf.len - hdrlen;
4711 if (count > recvd) {
4712 dprintk("NFS: server cheating in read reply: "
4713 "count %u > recvd %u\n", count, recvd);
4714 count = recvd;
4715 eof = 0;
4716 }
4717 xdr_read_pages(xdr, count);
4718 res->eof = eof;
4719 res->count = count;
4720 return 0;
4721 out_overflow:
4722 print_overflow_msg(__func__, xdr);
4723 return -EIO;
4724 }
4725
4726 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4727 {
4728 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4729 struct kvec *iov = rcvbuf->head;
4730 size_t hdrlen;
4731 u32 recvd, pglen = rcvbuf->page_len;
4732 int status;
4733
4734 status = decode_op_hdr(xdr, OP_READDIR);
4735 if (!status)
4736 status = decode_verifier(xdr, readdir->verifier.data);
4737 if (unlikely(status))
4738 return status;
4739 dprintk("%s: verifier = %08x:%08x\n",
4740 __func__,
4741 ((u32 *)readdir->verifier.data)[0],
4742 ((u32 *)readdir->verifier.data)[1]);
4743
4744
4745 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4746 recvd = rcvbuf->len - hdrlen;
4747 if (pglen > recvd)
4748 pglen = recvd;
4749 xdr_read_pages(xdr, pglen);
4750
4751
4752 return pglen;
4753 }
4754
4755 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4756 {
4757 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4758 struct kvec *iov = rcvbuf->head;
4759 size_t hdrlen;
4760 u32 len, recvd;
4761 __be32 *p;
4762 int status;
4763
4764 status = decode_op_hdr(xdr, OP_READLINK);
4765 if (status)
4766 return status;
4767
4768 /* Convert length of symlink */
4769 p = xdr_inline_decode(xdr, 4);
4770 if (unlikely(!p))
4771 goto out_overflow;
4772 len = be32_to_cpup(p);
4773 if (len >= rcvbuf->page_len || len <= 0) {
4774 dprintk("nfs: server returned giant symlink!\n");
4775 return -ENAMETOOLONG;
4776 }
4777 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4778 recvd = req->rq_rcv_buf.len - hdrlen;
4779 if (recvd < len) {
4780 dprintk("NFS: server cheating in readlink reply: "
4781 "count %u > recvd %u\n", len, recvd);
4782 return -EIO;
4783 }
4784 xdr_read_pages(xdr, len);
4785 /*
4786 * The XDR encode routine has set things up so that
4787 * the link text will be copied directly into the
4788 * buffer. We just have to do overflow-checking,
4789 * and and null-terminate the text (the VFS expects
4790 * null-termination).
4791 */
4792 xdr_terminate_string(rcvbuf, len);
4793 return 0;
4794 out_overflow:
4795 print_overflow_msg(__func__, xdr);
4796 return -EIO;
4797 }
4798
4799 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4800 {
4801 int status;
4802
4803 status = decode_op_hdr(xdr, OP_REMOVE);
4804 if (status)
4805 goto out;
4806 status = decode_change_info(xdr, cinfo);
4807 out:
4808 return status;
4809 }
4810
4811 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4812 struct nfs4_change_info *new_cinfo)
4813 {
4814 int status;
4815
4816 status = decode_op_hdr(xdr, OP_RENAME);
4817 if (status)
4818 goto out;
4819 if ((status = decode_change_info(xdr, old_cinfo)))
4820 goto out;
4821 status = decode_change_info(xdr, new_cinfo);
4822 out:
4823 return status;
4824 }
4825
4826 static int decode_renew(struct xdr_stream *xdr)
4827 {
4828 return decode_op_hdr(xdr, OP_RENEW);
4829 }
4830
4831 static int
4832 decode_restorefh(struct xdr_stream *xdr)
4833 {
4834 return decode_op_hdr(xdr, OP_RESTOREFH);
4835 }
4836
4837 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4838 size_t *acl_len)
4839 {
4840 __be32 *savep;
4841 uint32_t attrlen,
4842 bitmap[2] = {0};
4843 struct kvec *iov = req->rq_rcv_buf.head;
4844 int status;
4845
4846 *acl_len = 0;
4847 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4848 goto out;
4849 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4850 goto out;
4851 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4852 goto out;
4853
4854 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4855 return -EIO;
4856 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
4857 size_t hdrlen;
4858 u32 recvd;
4859
4860 /* We ignore &savep and don't do consistency checks on
4861 * the attr length. Let userspace figure it out.... */
4862 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4863 recvd = req->rq_rcv_buf.len - hdrlen;
4864 if (attrlen > recvd) {
4865 dprintk("NFS: server cheating in getattr"
4866 " acl reply: attrlen %u > recvd %u\n",
4867 attrlen, recvd);
4868 return -EINVAL;
4869 }
4870 xdr_read_pages(xdr, attrlen);
4871 *acl_len = attrlen;
4872 } else
4873 status = -EOPNOTSUPP;
4874
4875 out:
4876 return status;
4877 }
4878
4879 static int
4880 decode_savefh(struct xdr_stream *xdr)
4881 {
4882 return decode_op_hdr(xdr, OP_SAVEFH);
4883 }
4884
4885 static int decode_setattr(struct xdr_stream *xdr)
4886 {
4887 __be32 *p;
4888 uint32_t bmlen;
4889 int status;
4890
4891 status = decode_op_hdr(xdr, OP_SETATTR);
4892 if (status)
4893 return status;
4894 p = xdr_inline_decode(xdr, 4);
4895 if (unlikely(!p))
4896 goto out_overflow;
4897 bmlen = be32_to_cpup(p);
4898 p = xdr_inline_decode(xdr, bmlen << 2);
4899 if (likely(p))
4900 return 0;
4901 out_overflow:
4902 print_overflow_msg(__func__, xdr);
4903 return -EIO;
4904 }
4905
4906 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
4907 {
4908 __be32 *p;
4909 uint32_t opnum;
4910 int32_t nfserr;
4911
4912 p = xdr_inline_decode(xdr, 8);
4913 if (unlikely(!p))
4914 goto out_overflow;
4915 opnum = be32_to_cpup(p++);
4916 if (opnum != OP_SETCLIENTID) {
4917 dprintk("nfs: decode_setclientid: Server returned operation"
4918 " %d\n", opnum);
4919 return -EIO;
4920 }
4921 nfserr = be32_to_cpup(p);
4922 if (nfserr == NFS_OK) {
4923 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4924 if (unlikely(!p))
4925 goto out_overflow;
4926 p = xdr_decode_hyper(p, &res->clientid);
4927 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
4928 } else if (nfserr == NFSERR_CLID_INUSE) {
4929 uint32_t len;
4930
4931 /* skip netid string */
4932 p = xdr_inline_decode(xdr, 4);
4933 if (unlikely(!p))
4934 goto out_overflow;
4935 len = be32_to_cpup(p);
4936 p = xdr_inline_decode(xdr, len);
4937 if (unlikely(!p))
4938 goto out_overflow;
4939
4940 /* skip uaddr string */
4941 p = xdr_inline_decode(xdr, 4);
4942 if (unlikely(!p))
4943 goto out_overflow;
4944 len = be32_to_cpup(p);
4945 p = xdr_inline_decode(xdr, len);
4946 if (unlikely(!p))
4947 goto out_overflow;
4948 return -NFSERR_CLID_INUSE;
4949 } else
4950 return nfs4_stat_to_errno(nfserr);
4951
4952 return 0;
4953 out_overflow:
4954 print_overflow_msg(__func__, xdr);
4955 return -EIO;
4956 }
4957
4958 static int decode_setclientid_confirm(struct xdr_stream *xdr)
4959 {
4960 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4961 }
4962
4963 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4964 {
4965 __be32 *p;
4966 int status;
4967
4968 status = decode_op_hdr(xdr, OP_WRITE);
4969 if (status)
4970 return status;
4971
4972 p = xdr_inline_decode(xdr, 16);
4973 if (unlikely(!p))
4974 goto out_overflow;
4975 res->count = be32_to_cpup(p++);
4976 res->verf->committed = be32_to_cpup(p++);
4977 memcpy(res->verf->verifier, p, 8);
4978 return 0;
4979 out_overflow:
4980 print_overflow_msg(__func__, xdr);
4981 return -EIO;
4982 }
4983
4984 static int decode_delegreturn(struct xdr_stream *xdr)
4985 {
4986 return decode_op_hdr(xdr, OP_DELEGRETURN);
4987 }
4988
4989 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
4990 {
4991 __be32 *p;
4992
4993 p = xdr_inline_decode(xdr, 4);
4994 if (unlikely(!p))
4995 goto out_overflow;
4996 flavor->gss.sec_oid4.len = be32_to_cpup(p);
4997 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
4998 goto out_err;
4999
5000 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5001 if (unlikely(!p))
5002 goto out_overflow;
5003 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5004
5005 p = xdr_inline_decode(xdr, 8);
5006 if (unlikely(!p))
5007 goto out_overflow;
5008 flavor->gss.qop4 = be32_to_cpup(p++);
5009 flavor->gss.service = be32_to_cpup(p);
5010
5011 return 0;
5012
5013 out_overflow:
5014 print_overflow_msg(__func__, xdr);
5015 return -EIO;
5016 out_err:
5017 return -EINVAL;
5018 }
5019
5020 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5021 {
5022 struct nfs4_secinfo_flavor *sec_flavor;
5023 int status;
5024 __be32 *p;
5025 int i, num_flavors;
5026
5027 status = decode_op_hdr(xdr, OP_SECINFO);
5028 if (status)
5029 goto out;
5030 p = xdr_inline_decode(xdr, 4);
5031 if (unlikely(!p))
5032 goto out_overflow;
5033
5034 res->flavors->num_flavors = 0;
5035 num_flavors = be32_to_cpup(p);
5036
5037 for (i = 0; i < num_flavors; i++) {
5038 sec_flavor = &res->flavors->flavors[i];
5039 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5040 break;
5041
5042 p = xdr_inline_decode(xdr, 4);
5043 if (unlikely(!p))
5044 goto out_overflow;
5045 sec_flavor->flavor = be32_to_cpup(p);
5046
5047 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5048 status = decode_secinfo_gss(xdr, sec_flavor);
5049 if (status)
5050 goto out;
5051 }
5052 res->flavors->num_flavors++;
5053 }
5054
5055 out:
5056 return status;
5057 out_overflow:
5058 print_overflow_msg(__func__, xdr);
5059 return -EIO;
5060 }
5061
5062 #if defined(CONFIG_NFS_V4_1)
5063 static int decode_exchange_id(struct xdr_stream *xdr,
5064 struct nfs41_exchange_id_res *res)
5065 {
5066 __be32 *p;
5067 uint32_t dummy;
5068 char *dummy_str;
5069 int status;
5070 struct nfs_client *clp = res->client;
5071
5072 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5073 if (status)
5074 return status;
5075
5076 p = xdr_inline_decode(xdr, 8);
5077 if (unlikely(!p))
5078 goto out_overflow;
5079 xdr_decode_hyper(p, &clp->cl_clientid);
5080 p = xdr_inline_decode(xdr, 12);
5081 if (unlikely(!p))
5082 goto out_overflow;
5083 clp->cl_seqid = be32_to_cpup(p++);
5084 clp->cl_exchange_flags = be32_to_cpup(p++);
5085
5086 /* We ask for SP4_NONE */
5087 dummy = be32_to_cpup(p);
5088 if (dummy != SP4_NONE)
5089 return -EIO;
5090
5091 /* Throw away minor_id */
5092 p = xdr_inline_decode(xdr, 8);
5093 if (unlikely(!p))
5094 goto out_overflow;
5095
5096 /* Throw away Major id */
5097 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5098 if (unlikely(status))
5099 return status;
5100
5101 /* Save server_scope */
5102 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5103 if (unlikely(status))
5104 return status;
5105
5106 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5107 return -EIO;
5108
5109 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5110 res->server_scope->server_scope_sz = dummy;
5111
5112 /* Throw away Implementation id array */
5113 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5114 if (unlikely(status))
5115 return status;
5116
5117 return 0;
5118 out_overflow:
5119 print_overflow_msg(__func__, xdr);
5120 return -EIO;
5121 }
5122
5123 static int decode_chan_attrs(struct xdr_stream *xdr,
5124 struct nfs4_channel_attrs *attrs)
5125 {
5126 __be32 *p;
5127 u32 nr_attrs, val;
5128
5129 p = xdr_inline_decode(xdr, 28);
5130 if (unlikely(!p))
5131 goto out_overflow;
5132 val = be32_to_cpup(p++); /* headerpadsz */
5133 if (val)
5134 return -EINVAL; /* no support for header padding yet */
5135 attrs->max_rqst_sz = be32_to_cpup(p++);
5136 attrs->max_resp_sz = be32_to_cpup(p++);
5137 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5138 attrs->max_ops = be32_to_cpup(p++);
5139 attrs->max_reqs = be32_to_cpup(p++);
5140 nr_attrs = be32_to_cpup(p);
5141 if (unlikely(nr_attrs > 1)) {
5142 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
5143 __func__, nr_attrs);
5144 return -EINVAL;
5145 }
5146 if (nr_attrs == 1) {
5147 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5148 if (unlikely(!p))
5149 goto out_overflow;
5150 }
5151 return 0;
5152 out_overflow:
5153 print_overflow_msg(__func__, xdr);
5154 return -EIO;
5155 }
5156
5157 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5158 {
5159 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5160 }
5161
5162 static int decode_create_session(struct xdr_stream *xdr,
5163 struct nfs41_create_session_res *res)
5164 {
5165 __be32 *p;
5166 int status;
5167 struct nfs_client *clp = res->client;
5168 struct nfs4_session *session = clp->cl_session;
5169
5170 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5171 if (!status)
5172 status = decode_sessionid(xdr, &session->sess_id);
5173 if (unlikely(status))
5174 return status;
5175
5176 /* seqid, flags */
5177 p = xdr_inline_decode(xdr, 8);
5178 if (unlikely(!p))
5179 goto out_overflow;
5180 clp->cl_seqid = be32_to_cpup(p++);
5181 session->flags = be32_to_cpup(p);
5182
5183 /* Channel attributes */
5184 status = decode_chan_attrs(xdr, &session->fc_attrs);
5185 if (!status)
5186 status = decode_chan_attrs(xdr, &session->bc_attrs);
5187 return status;
5188 out_overflow:
5189 print_overflow_msg(__func__, xdr);
5190 return -EIO;
5191 }
5192
5193 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5194 {
5195 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5196 }
5197
5198 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5199 {
5200 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5201 }
5202 #endif /* CONFIG_NFS_V4_1 */
5203
5204 static int decode_sequence(struct xdr_stream *xdr,
5205 struct nfs4_sequence_res *res,
5206 struct rpc_rqst *rqstp)
5207 {
5208 #if defined(CONFIG_NFS_V4_1)
5209 struct nfs4_sessionid id;
5210 u32 dummy;
5211 int status;
5212 __be32 *p;
5213
5214 if (!res->sr_session)
5215 return 0;
5216
5217 status = decode_op_hdr(xdr, OP_SEQUENCE);
5218 if (!status)
5219 status = decode_sessionid(xdr, &id);
5220 if (unlikely(status))
5221 goto out_err;
5222
5223 /*
5224 * If the server returns different values for sessionID, slotID or
5225 * sequence number, the server is looney tunes.
5226 */
5227 status = -EREMOTEIO;
5228
5229 if (memcmp(id.data, res->sr_session->sess_id.data,
5230 NFS4_MAX_SESSIONID_LEN)) {
5231 dprintk("%s Invalid session id\n", __func__);
5232 goto out_err;
5233 }
5234
5235 p = xdr_inline_decode(xdr, 20);
5236 if (unlikely(!p))
5237 goto out_overflow;
5238
5239 /* seqid */
5240 dummy = be32_to_cpup(p++);
5241 if (dummy != res->sr_slot->seq_nr) {
5242 dprintk("%s Invalid sequence number\n", __func__);
5243 goto out_err;
5244 }
5245 /* slot id */
5246 dummy = be32_to_cpup(p++);
5247 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5248 dprintk("%s Invalid slot id\n", __func__);
5249 goto out_err;
5250 }
5251 /* highest slot id - currently not processed */
5252 dummy = be32_to_cpup(p++);
5253 /* target highest slot id - currently not processed */
5254 dummy = be32_to_cpup(p++);
5255 /* result flags */
5256 res->sr_status_flags = be32_to_cpup(p);
5257 status = 0;
5258 out_err:
5259 res->sr_status = status;
5260 return status;
5261 out_overflow:
5262 print_overflow_msg(__func__, xdr);
5263 status = -EIO;
5264 goto out_err;
5265 #else /* CONFIG_NFS_V4_1 */
5266 return 0;
5267 #endif /* CONFIG_NFS_V4_1 */
5268 }
5269
5270 #if defined(CONFIG_NFS_V4_1)
5271
5272 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5273 struct pnfs_device *pdev)
5274 {
5275 __be32 *p;
5276 uint32_t len, type;
5277 int status;
5278
5279 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5280 if (status) {
5281 if (status == -ETOOSMALL) {
5282 p = xdr_inline_decode(xdr, 4);
5283 if (unlikely(!p))
5284 goto out_overflow;
5285 pdev->mincount = be32_to_cpup(p);
5286 dprintk("%s: Min count too small. mincnt = %u\n",
5287 __func__, pdev->mincount);
5288 }
5289 return status;
5290 }
5291
5292 p = xdr_inline_decode(xdr, 8);
5293 if (unlikely(!p))
5294 goto out_overflow;
5295 type = be32_to_cpup(p++);
5296 if (type != pdev->layout_type) {
5297 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5298 __func__, pdev->layout_type, type);
5299 return -EINVAL;
5300 }
5301 /*
5302 * Get the length of the opaque device_addr4. xdr_read_pages places
5303 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5304 * and places the remaining xdr data in xdr_buf->tail
5305 */
5306 pdev->mincount = be32_to_cpup(p);
5307 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5308
5309 /* Parse notification bitmap, verifying that it is zero. */
5310 p = xdr_inline_decode(xdr, 4);
5311 if (unlikely(!p))
5312 goto out_overflow;
5313 len = be32_to_cpup(p);
5314 if (len) {
5315 uint32_t i;
5316
5317 p = xdr_inline_decode(xdr, 4 * len);
5318 if (unlikely(!p))
5319 goto out_overflow;
5320 for (i = 0; i < len; i++, p++) {
5321 if (be32_to_cpup(p)) {
5322 dprintk("%s: notifications not supported\n",
5323 __func__);
5324 return -EIO;
5325 }
5326 }
5327 }
5328 return 0;
5329 out_overflow:
5330 print_overflow_msg(__func__, xdr);
5331 return -EIO;
5332 }
5333
5334 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5335 struct nfs4_layoutget_res *res)
5336 {
5337 __be32 *p;
5338 int status;
5339 u32 layout_count;
5340 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5341 struct kvec *iov = rcvbuf->head;
5342 u32 hdrlen, recvd;
5343
5344 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5345 if (status)
5346 return status;
5347 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
5348 if (unlikely(!p))
5349 goto out_overflow;
5350 res->return_on_close = be32_to_cpup(p++);
5351 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
5352 layout_count = be32_to_cpup(p);
5353 if (!layout_count) {
5354 dprintk("%s: server responded with empty layout array\n",
5355 __func__);
5356 return -EINVAL;
5357 }
5358
5359 p = xdr_inline_decode(xdr, 28);
5360 if (unlikely(!p))
5361 goto out_overflow;
5362 p = xdr_decode_hyper(p, &res->range.offset);
5363 p = xdr_decode_hyper(p, &res->range.length);
5364 res->range.iomode = be32_to_cpup(p++);
5365 res->type = be32_to_cpup(p++);
5366 res->layoutp->len = be32_to_cpup(p);
5367
5368 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5369 __func__,
5370 (unsigned long)res->range.offset,
5371 (unsigned long)res->range.length,
5372 res->range.iomode,
5373 res->type,
5374 res->layoutp->len);
5375
5376 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
5377 recvd = req->rq_rcv_buf.len - hdrlen;
5378 if (res->layoutp->len > recvd) {
5379 dprintk("NFS: server cheating in layoutget reply: "
5380 "layout len %u > recvd %u\n",
5381 res->layoutp->len, recvd);
5382 return -EINVAL;
5383 }
5384
5385 xdr_read_pages(xdr, res->layoutp->len);
5386
5387 if (layout_count > 1) {
5388 /* We only handle a length one array at the moment. Any
5389 * further entries are just ignored. Note that this means
5390 * the client may see a response that is less than the
5391 * minimum it requested.
5392 */
5393 dprintk("%s: server responded with %d layouts, dropping tail\n",
5394 __func__, layout_count);
5395 }
5396
5397 return 0;
5398 out_overflow:
5399 print_overflow_msg(__func__, xdr);
5400 return -EIO;
5401 }
5402
5403 static int decode_layoutreturn(struct xdr_stream *xdr,
5404 struct nfs4_layoutreturn_res *res)
5405 {
5406 __be32 *p;
5407 int status;
5408
5409 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5410 if (status)
5411 return status;
5412 p = xdr_inline_decode(xdr, 4);
5413 if (unlikely(!p))
5414 goto out_overflow;
5415 res->lrs_present = be32_to_cpup(p);
5416 if (res->lrs_present)
5417 status = decode_stateid(xdr, &res->stateid);
5418 return status;
5419 out_overflow:
5420 print_overflow_msg(__func__, xdr);
5421 return -EIO;
5422 }
5423
5424 static int decode_layoutcommit(struct xdr_stream *xdr,
5425 struct rpc_rqst *req,
5426 struct nfs4_layoutcommit_res *res)
5427 {
5428 __be32 *p;
5429 __u32 sizechanged;
5430 int status;
5431
5432 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5433 if (status)
5434 return status;
5435
5436 p = xdr_inline_decode(xdr, 4);
5437 if (unlikely(!p))
5438 goto out_overflow;
5439 sizechanged = be32_to_cpup(p);
5440
5441 if (sizechanged) {
5442 /* throw away new size */
5443 p = xdr_inline_decode(xdr, 8);
5444 if (unlikely(!p))
5445 goto out_overflow;
5446 }
5447 return 0;
5448 out_overflow:
5449 print_overflow_msg(__func__, xdr);
5450 return -EIO;
5451 }
5452
5453 static int decode_test_stateid(struct xdr_stream *xdr,
5454 struct nfs41_test_stateid_res *res)
5455 {
5456 __be32 *p;
5457 int status;
5458 int num_res;
5459
5460 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5461 if (status)
5462 return status;
5463
5464 p = xdr_inline_decode(xdr, 4);
5465 if (unlikely(!p))
5466 goto out_overflow;
5467 num_res = be32_to_cpup(p++);
5468 if (num_res != 1)
5469 goto out;
5470
5471 p = xdr_inline_decode(xdr, 4);
5472 if (unlikely(!p))
5473 goto out_overflow;
5474 res->status = be32_to_cpup(p++);
5475 return res->status;
5476 out_overflow:
5477 print_overflow_msg(__func__, xdr);
5478 out:
5479 return -EIO;
5480 }
5481
5482 static int decode_free_stateid(struct xdr_stream *xdr,
5483 struct nfs41_free_stateid_res *res)
5484 {
5485 __be32 *p;
5486 int status;
5487
5488 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5489 if (status)
5490 return status;
5491
5492 p = xdr_inline_decode(xdr, 4);
5493 if (unlikely(!p))
5494 goto out_overflow;
5495 res->status = be32_to_cpup(p++);
5496 return res->status;
5497 out_overflow:
5498 print_overflow_msg(__func__, xdr);
5499 return -EIO;
5500 }
5501 #endif /* CONFIG_NFS_V4_1 */
5502
5503 /*
5504 * END OF "GENERIC" DECODE ROUTINES.
5505 */
5506
5507 /*
5508 * Decode OPEN_DOWNGRADE response
5509 */
5510 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5511 struct xdr_stream *xdr,
5512 struct nfs_closeres *res)
5513 {
5514 struct compound_hdr hdr;
5515 int status;
5516
5517 status = decode_compound_hdr(xdr, &hdr);
5518 if (status)
5519 goto out;
5520 status = decode_sequence(xdr, &res->seq_res, rqstp);
5521 if (status)
5522 goto out;
5523 status = decode_putfh(xdr);
5524 if (status)
5525 goto out;
5526 status = decode_open_downgrade(xdr, res);
5527 if (status != 0)
5528 goto out;
5529 decode_getfattr(xdr, res->fattr, res->server,
5530 !RPC_IS_ASYNC(rqstp->rq_task));
5531 out:
5532 return status;
5533 }
5534
5535 /*
5536 * Decode ACCESS response
5537 */
5538 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5539 struct nfs4_accessres *res)
5540 {
5541 struct compound_hdr hdr;
5542 int status;
5543
5544 status = decode_compound_hdr(xdr, &hdr);
5545 if (status)
5546 goto out;
5547 status = decode_sequence(xdr, &res->seq_res, rqstp);
5548 if (status)
5549 goto out;
5550 status = decode_putfh(xdr);
5551 if (status != 0)
5552 goto out;
5553 status = decode_access(xdr, res);
5554 if (status != 0)
5555 goto out;
5556 decode_getfattr(xdr, res->fattr, res->server,
5557 !RPC_IS_ASYNC(rqstp->rq_task));
5558 out:
5559 return status;
5560 }
5561
5562 /*
5563 * Decode LOOKUP response
5564 */
5565 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5566 struct nfs4_lookup_res *res)
5567 {
5568 struct compound_hdr hdr;
5569 int status;
5570
5571 status = decode_compound_hdr(xdr, &hdr);
5572 if (status)
5573 goto out;
5574 status = decode_sequence(xdr, &res->seq_res, rqstp);
5575 if (status)
5576 goto out;
5577 status = decode_putfh(xdr);
5578 if (status)
5579 goto out;
5580 status = decode_lookup(xdr);
5581 if (status)
5582 goto out;
5583 status = decode_getfh(xdr, res->fh);
5584 if (status)
5585 goto out;
5586 status = decode_getfattr(xdr, res->fattr, res->server
5587 ,!RPC_IS_ASYNC(rqstp->rq_task));
5588 out:
5589 return status;
5590 }
5591
5592 /*
5593 * Decode LOOKUP_ROOT response
5594 */
5595 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5596 struct xdr_stream *xdr,
5597 struct nfs4_lookup_res *res)
5598 {
5599 struct compound_hdr hdr;
5600 int status;
5601
5602 status = decode_compound_hdr(xdr, &hdr);
5603 if (status)
5604 goto out;
5605 status = decode_sequence(xdr, &res->seq_res, rqstp);
5606 if (status)
5607 goto out;
5608 status = decode_putrootfh(xdr);
5609 if (status)
5610 goto out;
5611 status = decode_getfh(xdr, res->fh);
5612 if (status == 0)
5613 status = decode_getfattr(xdr, res->fattr, res->server,
5614 !RPC_IS_ASYNC(rqstp->rq_task));
5615 out:
5616 return status;
5617 }
5618
5619 /*
5620 * Decode REMOVE response
5621 */
5622 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5623 struct nfs_removeres *res)
5624 {
5625 struct compound_hdr hdr;
5626 int status;
5627
5628 status = decode_compound_hdr(xdr, &hdr);
5629 if (status)
5630 goto out;
5631 status = decode_sequence(xdr, &res->seq_res, rqstp);
5632 if (status)
5633 goto out;
5634 status = decode_putfh(xdr);
5635 if (status)
5636 goto out;
5637 status = decode_remove(xdr, &res->cinfo);
5638 if (status)
5639 goto out;
5640 decode_getfattr(xdr, res->dir_attr, res->server,
5641 !RPC_IS_ASYNC(rqstp->rq_task));
5642 out:
5643 return status;
5644 }
5645
5646 /*
5647 * Decode RENAME response
5648 */
5649 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5650 struct nfs_renameres *res)
5651 {
5652 struct compound_hdr hdr;
5653 int status;
5654
5655 status = decode_compound_hdr(xdr, &hdr);
5656 if (status)
5657 goto out;
5658 status = decode_sequence(xdr, &res->seq_res, rqstp);
5659 if (status)
5660 goto out;
5661 status = decode_putfh(xdr);
5662 if (status)
5663 goto out;
5664 status = decode_savefh(xdr);
5665 if (status)
5666 goto out;
5667 status = decode_putfh(xdr);
5668 if (status)
5669 goto out;
5670 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
5671 if (status)
5672 goto out;
5673 /* Current FH is target directory */
5674 if (decode_getfattr(xdr, res->new_fattr, res->server,
5675 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5676 goto out;
5677 status = decode_restorefh(xdr);
5678 if (status)
5679 goto out;
5680 decode_getfattr(xdr, res->old_fattr, res->server,
5681 !RPC_IS_ASYNC(rqstp->rq_task));
5682 out:
5683 return status;
5684 }
5685
5686 /*
5687 * Decode LINK response
5688 */
5689 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5690 struct nfs4_link_res *res)
5691 {
5692 struct compound_hdr hdr;
5693 int status;
5694
5695 status = decode_compound_hdr(xdr, &hdr);
5696 if (status)
5697 goto out;
5698 status = decode_sequence(xdr, &res->seq_res, rqstp);
5699 if (status)
5700 goto out;
5701 status = decode_putfh(xdr);
5702 if (status)
5703 goto out;
5704 status = decode_savefh(xdr);
5705 if (status)
5706 goto out;
5707 status = decode_putfh(xdr);
5708 if (status)
5709 goto out;
5710 status = decode_link(xdr, &res->cinfo);
5711 if (status)
5712 goto out;
5713 /*
5714 * Note order: OP_LINK leaves the directory as the current
5715 * filehandle.
5716 */
5717 if (decode_getfattr(xdr, res->dir_attr, res->server,
5718 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5719 goto out;
5720 status = decode_restorefh(xdr);
5721 if (status)
5722 goto out;
5723 decode_getfattr(xdr, res->fattr, res->server,
5724 !RPC_IS_ASYNC(rqstp->rq_task));
5725 out:
5726 return status;
5727 }
5728
5729 /*
5730 * Decode CREATE response
5731 */
5732 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5733 struct nfs4_create_res *res)
5734 {
5735 struct compound_hdr hdr;
5736 int status;
5737
5738 status = decode_compound_hdr(xdr, &hdr);
5739 if (status)
5740 goto out;
5741 status = decode_sequence(xdr, &res->seq_res, rqstp);
5742 if (status)
5743 goto out;
5744 status = decode_putfh(xdr);
5745 if (status)
5746 goto out;
5747 status = decode_savefh(xdr);
5748 if (status)
5749 goto out;
5750 status = decode_create(xdr, &res->dir_cinfo);
5751 if (status)
5752 goto out;
5753 status = decode_getfh(xdr, res->fh);
5754 if (status)
5755 goto out;
5756 if (decode_getfattr(xdr, res->fattr, res->server,
5757 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5758 goto out;
5759 status = decode_restorefh(xdr);
5760 if (status)
5761 goto out;
5762 decode_getfattr(xdr, res->dir_fattr, res->server,
5763 !RPC_IS_ASYNC(rqstp->rq_task));
5764 out:
5765 return status;
5766 }
5767
5768 /*
5769 * Decode SYMLINK response
5770 */
5771 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5772 struct nfs4_create_res *res)
5773 {
5774 return nfs4_xdr_dec_create(rqstp, xdr, res);
5775 }
5776
5777 /*
5778 * Decode GETATTR response
5779 */
5780 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5781 struct nfs4_getattr_res *res)
5782 {
5783 struct compound_hdr hdr;
5784 int status;
5785
5786 status = decode_compound_hdr(xdr, &hdr);
5787 if (status)
5788 goto out;
5789 status = decode_sequence(xdr, &res->seq_res, rqstp);
5790 if (status)
5791 goto out;
5792 status = decode_putfh(xdr);
5793 if (status)
5794 goto out;
5795 status = decode_getfattr(xdr, res->fattr, res->server,
5796 !RPC_IS_ASYNC(rqstp->rq_task));
5797 out:
5798 return status;
5799 }
5800
5801 /*
5802 * Encode an SETACL request
5803 */
5804 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
5805 struct nfs_setaclargs *args)
5806 {
5807 struct compound_hdr hdr = {
5808 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
5809 };
5810
5811 encode_compound_hdr(xdr, req, &hdr);
5812 encode_sequence(xdr, &args->seq_args, &hdr);
5813 encode_putfh(xdr, args->fh, &hdr);
5814 encode_setacl(xdr, args, &hdr);
5815 encode_nops(&hdr);
5816 }
5817
5818 /*
5819 * Decode SETACL response
5820 */
5821 static int
5822 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5823 struct nfs_setaclres *res)
5824 {
5825 struct compound_hdr hdr;
5826 int status;
5827
5828 status = decode_compound_hdr(xdr, &hdr);
5829 if (status)
5830 goto out;
5831 status = decode_sequence(xdr, &res->seq_res, rqstp);
5832 if (status)
5833 goto out;
5834 status = decode_putfh(xdr);
5835 if (status)
5836 goto out;
5837 status = decode_setattr(xdr);
5838 out:
5839 return status;
5840 }
5841
5842 /*
5843 * Decode GETACL response
5844 */
5845 static int
5846 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5847 struct nfs_getaclres *res)
5848 {
5849 struct compound_hdr hdr;
5850 int status;
5851
5852 status = decode_compound_hdr(xdr, &hdr);
5853 if (status)
5854 goto out;
5855 status = decode_sequence(xdr, &res->seq_res, rqstp);
5856 if (status)
5857 goto out;
5858 status = decode_putfh(xdr);
5859 if (status)
5860 goto out;
5861 status = decode_getacl(xdr, rqstp, &res->acl_len);
5862
5863 out:
5864 return status;
5865 }
5866
5867 /*
5868 * Decode CLOSE response
5869 */
5870 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5871 struct nfs_closeres *res)
5872 {
5873 struct compound_hdr hdr;
5874 int status;
5875
5876 status = decode_compound_hdr(xdr, &hdr);
5877 if (status)
5878 goto out;
5879 status = decode_sequence(xdr, &res->seq_res, rqstp);
5880 if (status)
5881 goto out;
5882 status = decode_putfh(xdr);
5883 if (status)
5884 goto out;
5885 status = decode_close(xdr, res);
5886 if (status != 0)
5887 goto out;
5888 /*
5889 * Note: Server may do delete on close for this file
5890 * in which case the getattr call will fail with
5891 * an ESTALE error. Shouldn't be a problem,
5892 * though, since fattr->valid will remain unset.
5893 */
5894 decode_getfattr(xdr, res->fattr, res->server,
5895 !RPC_IS_ASYNC(rqstp->rq_task));
5896 out:
5897 return status;
5898 }
5899
5900 /*
5901 * Decode OPEN response
5902 */
5903 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5904 struct nfs_openres *res)
5905 {
5906 struct compound_hdr hdr;
5907 int status;
5908
5909 status = decode_compound_hdr(xdr, &hdr);
5910 if (status)
5911 goto out;
5912 status = decode_sequence(xdr, &res->seq_res, rqstp);
5913 if (status)
5914 goto out;
5915 status = decode_putfh(xdr);
5916 if (status)
5917 goto out;
5918 status = decode_savefh(xdr);
5919 if (status)
5920 goto out;
5921 status = decode_open(xdr, res);
5922 if (status)
5923 goto out;
5924 if (decode_getfh(xdr, &res->fh) != 0)
5925 goto out;
5926 if (decode_getfattr(xdr, res->f_attr, res->server,
5927 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
5928 goto out;
5929 if (decode_restorefh(xdr) != 0)
5930 goto out;
5931 decode_getfattr(xdr, res->dir_attr, res->server,
5932 !RPC_IS_ASYNC(rqstp->rq_task));
5933 out:
5934 return status;
5935 }
5936
5937 /*
5938 * Decode OPEN_CONFIRM response
5939 */
5940 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
5941 struct xdr_stream *xdr,
5942 struct nfs_open_confirmres *res)
5943 {
5944 struct compound_hdr hdr;
5945 int status;
5946
5947 status = decode_compound_hdr(xdr, &hdr);
5948 if (status)
5949 goto out;
5950 status = decode_putfh(xdr);
5951 if (status)
5952 goto out;
5953 status = decode_open_confirm(xdr, res);
5954 out:
5955 return status;
5956 }
5957
5958 /*
5959 * Decode OPEN response
5960 */
5961 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
5962 struct xdr_stream *xdr,
5963 struct nfs_openres *res)
5964 {
5965 struct compound_hdr hdr;
5966 int status;
5967
5968 status = decode_compound_hdr(xdr, &hdr);
5969 if (status)
5970 goto out;
5971 status = decode_sequence(xdr, &res->seq_res, rqstp);
5972 if (status)
5973 goto out;
5974 status = decode_putfh(xdr);
5975 if (status)
5976 goto out;
5977 status = decode_open(xdr, res);
5978 if (status)
5979 goto out;
5980 decode_getfattr(xdr, res->f_attr, res->server,
5981 !RPC_IS_ASYNC(rqstp->rq_task));
5982 out:
5983 return status;
5984 }
5985
5986 /*
5987 * Decode SETATTR response
5988 */
5989 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
5990 struct xdr_stream *xdr,
5991 struct nfs_setattrres *res)
5992 {
5993 struct compound_hdr hdr;
5994 int status;
5995
5996 status = decode_compound_hdr(xdr, &hdr);
5997 if (status)
5998 goto out;
5999 status = decode_sequence(xdr, &res->seq_res, rqstp);
6000 if (status)
6001 goto out;
6002 status = decode_putfh(xdr);
6003 if (status)
6004 goto out;
6005 status = decode_setattr(xdr);
6006 if (status)
6007 goto out;
6008 decode_getfattr(xdr, res->fattr, res->server,
6009 !RPC_IS_ASYNC(rqstp->rq_task));
6010 out:
6011 return status;
6012 }
6013
6014 /*
6015 * Decode LOCK response
6016 */
6017 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6018 struct nfs_lock_res *res)
6019 {
6020 struct compound_hdr hdr;
6021 int status;
6022
6023 status = decode_compound_hdr(xdr, &hdr);
6024 if (status)
6025 goto out;
6026 status = decode_sequence(xdr, &res->seq_res, rqstp);
6027 if (status)
6028 goto out;
6029 status = decode_putfh(xdr);
6030 if (status)
6031 goto out;
6032 status = decode_lock(xdr, res);
6033 out:
6034 return status;
6035 }
6036
6037 /*
6038 * Decode LOCKT response
6039 */
6040 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6041 struct nfs_lockt_res *res)
6042 {
6043 struct compound_hdr hdr;
6044 int status;
6045
6046 status = decode_compound_hdr(xdr, &hdr);
6047 if (status)
6048 goto out;
6049 status = decode_sequence(xdr, &res->seq_res, rqstp);
6050 if (status)
6051 goto out;
6052 status = decode_putfh(xdr);
6053 if (status)
6054 goto out;
6055 status = decode_lockt(xdr, res);
6056 out:
6057 return status;
6058 }
6059
6060 /*
6061 * Decode LOCKU response
6062 */
6063 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6064 struct nfs_locku_res *res)
6065 {
6066 struct compound_hdr hdr;
6067 int status;
6068
6069 status = decode_compound_hdr(xdr, &hdr);
6070 if (status)
6071 goto out;
6072 status = decode_sequence(xdr, &res->seq_res, rqstp);
6073 if (status)
6074 goto out;
6075 status = decode_putfh(xdr);
6076 if (status)
6077 goto out;
6078 status = decode_locku(xdr, res);
6079 out:
6080 return status;
6081 }
6082
6083 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6084 struct xdr_stream *xdr, void *dummy)
6085 {
6086 struct compound_hdr hdr;
6087 int status;
6088
6089 status = decode_compound_hdr(xdr, &hdr);
6090 if (!status)
6091 status = decode_release_lockowner(xdr);
6092 return status;
6093 }
6094
6095 /*
6096 * Decode READLINK response
6097 */
6098 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6099 struct xdr_stream *xdr,
6100 struct nfs4_readlink_res *res)
6101 {
6102 struct compound_hdr hdr;
6103 int status;
6104
6105 status = decode_compound_hdr(xdr, &hdr);
6106 if (status)
6107 goto out;
6108 status = decode_sequence(xdr, &res->seq_res, rqstp);
6109 if (status)
6110 goto out;
6111 status = decode_putfh(xdr);
6112 if (status)
6113 goto out;
6114 status = decode_readlink(xdr, rqstp);
6115 out:
6116 return status;
6117 }
6118
6119 /*
6120 * Decode READDIR response
6121 */
6122 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6123 struct nfs4_readdir_res *res)
6124 {
6125 struct compound_hdr hdr;
6126 int status;
6127
6128 status = decode_compound_hdr(xdr, &hdr);
6129 if (status)
6130 goto out;
6131 status = decode_sequence(xdr, &res->seq_res, rqstp);
6132 if (status)
6133 goto out;
6134 status = decode_putfh(xdr);
6135 if (status)
6136 goto out;
6137 status = decode_readdir(xdr, rqstp, res);
6138 out:
6139 return status;
6140 }
6141
6142 /*
6143 * Decode Read response
6144 */
6145 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6146 struct nfs_readres *res)
6147 {
6148 struct compound_hdr hdr;
6149 int status;
6150
6151 status = decode_compound_hdr(xdr, &hdr);
6152 if (status)
6153 goto out;
6154 status = decode_sequence(xdr, &res->seq_res, rqstp);
6155 if (status)
6156 goto out;
6157 status = decode_putfh(xdr);
6158 if (status)
6159 goto out;
6160 status = decode_read(xdr, rqstp, res);
6161 if (!status)
6162 status = res->count;
6163 out:
6164 return status;
6165 }
6166
6167 /*
6168 * Decode WRITE response
6169 */
6170 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6171 struct nfs_writeres *res)
6172 {
6173 struct compound_hdr hdr;
6174 int status;
6175
6176 status = decode_compound_hdr(xdr, &hdr);
6177 if (status)
6178 goto out;
6179 status = decode_sequence(xdr, &res->seq_res, rqstp);
6180 if (status)
6181 goto out;
6182 status = decode_putfh(xdr);
6183 if (status)
6184 goto out;
6185 status = decode_write(xdr, res);
6186 if (status)
6187 goto out;
6188 if (res->fattr)
6189 decode_getfattr(xdr, res->fattr, res->server,
6190 !RPC_IS_ASYNC(rqstp->rq_task));
6191 if (!status)
6192 status = res->count;
6193 out:
6194 return status;
6195 }
6196
6197 /*
6198 * Decode COMMIT response
6199 */
6200 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6201 struct nfs_writeres *res)
6202 {
6203 struct compound_hdr hdr;
6204 int status;
6205
6206 status = decode_compound_hdr(xdr, &hdr);
6207 if (status)
6208 goto out;
6209 status = decode_sequence(xdr, &res->seq_res, rqstp);
6210 if (status)
6211 goto out;
6212 status = decode_putfh(xdr);
6213 if (status)
6214 goto out;
6215 status = decode_commit(xdr, res);
6216 if (status)
6217 goto out;
6218 if (res->fattr)
6219 decode_getfattr(xdr, res->fattr, res->server,
6220 !RPC_IS_ASYNC(rqstp->rq_task));
6221 out:
6222 return status;
6223 }
6224
6225 /*
6226 * Decode FSINFO response
6227 */
6228 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6229 struct nfs4_fsinfo_res *res)
6230 {
6231 struct compound_hdr hdr;
6232 int status;
6233
6234 status = decode_compound_hdr(xdr, &hdr);
6235 if (!status)
6236 status = decode_sequence(xdr, &res->seq_res, req);
6237 if (!status)
6238 status = decode_putfh(xdr);
6239 if (!status)
6240 status = decode_fsinfo(xdr, res->fsinfo);
6241 return status;
6242 }
6243
6244 /*
6245 * Decode PATHCONF response
6246 */
6247 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6248 struct nfs4_pathconf_res *res)
6249 {
6250 struct compound_hdr hdr;
6251 int status;
6252
6253 status = decode_compound_hdr(xdr, &hdr);
6254 if (!status)
6255 status = decode_sequence(xdr, &res->seq_res, req);
6256 if (!status)
6257 status = decode_putfh(xdr);
6258 if (!status)
6259 status = decode_pathconf(xdr, res->pathconf);
6260 return status;
6261 }
6262
6263 /*
6264 * Decode STATFS response
6265 */
6266 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6267 struct nfs4_statfs_res *res)
6268 {
6269 struct compound_hdr hdr;
6270 int status;
6271
6272 status = decode_compound_hdr(xdr, &hdr);
6273 if (!status)
6274 status = decode_sequence(xdr, &res->seq_res, req);
6275 if (!status)
6276 status = decode_putfh(xdr);
6277 if (!status)
6278 status = decode_statfs(xdr, res->fsstat);
6279 return status;
6280 }
6281
6282 /*
6283 * Decode GETATTR_BITMAP response
6284 */
6285 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6286 struct xdr_stream *xdr,
6287 struct nfs4_server_caps_res *res)
6288 {
6289 struct compound_hdr hdr;
6290 int status;
6291
6292 status = decode_compound_hdr(xdr, &hdr);
6293 if (status)
6294 goto out;
6295 status = decode_sequence(xdr, &res->seq_res, req);
6296 if (status)
6297 goto out;
6298 status = decode_putfh(xdr);
6299 if (status)
6300 goto out;
6301 status = decode_server_caps(xdr, res);
6302 out:
6303 return status;
6304 }
6305
6306 /*
6307 * Decode RENEW response
6308 */
6309 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6310 void *__unused)
6311 {
6312 struct compound_hdr hdr;
6313 int status;
6314
6315 status = decode_compound_hdr(xdr, &hdr);
6316 if (!status)
6317 status = decode_renew(xdr);
6318 return status;
6319 }
6320
6321 /*
6322 * Decode SETCLIENTID response
6323 */
6324 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6325 struct xdr_stream *xdr,
6326 struct nfs4_setclientid_res *res)
6327 {
6328 struct compound_hdr hdr;
6329 int status;
6330
6331 status = decode_compound_hdr(xdr, &hdr);
6332 if (!status)
6333 status = decode_setclientid(xdr, res);
6334 return status;
6335 }
6336
6337 /*
6338 * Decode SETCLIENTID_CONFIRM response
6339 */
6340 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6341 struct xdr_stream *xdr,
6342 struct nfs_fsinfo *fsinfo)
6343 {
6344 struct compound_hdr hdr;
6345 int status;
6346
6347 status = decode_compound_hdr(xdr, &hdr);
6348 if (!status)
6349 status = decode_setclientid_confirm(xdr);
6350 if (!status)
6351 status = decode_putrootfh(xdr);
6352 if (!status)
6353 status = decode_fsinfo(xdr, fsinfo);
6354 return status;
6355 }
6356
6357 /*
6358 * Decode DELEGRETURN response
6359 */
6360 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6361 struct xdr_stream *xdr,
6362 struct nfs4_delegreturnres *res)
6363 {
6364 struct compound_hdr hdr;
6365 int status;
6366
6367 status = decode_compound_hdr(xdr, &hdr);
6368 if (status)
6369 goto out;
6370 status = decode_sequence(xdr, &res->seq_res, rqstp);
6371 if (status)
6372 goto out;
6373 status = decode_putfh(xdr);
6374 if (status != 0)
6375 goto out;
6376 status = decode_delegreturn(xdr);
6377 if (status != 0)
6378 goto out;
6379 decode_getfattr(xdr, res->fattr, res->server,
6380 !RPC_IS_ASYNC(rqstp->rq_task));
6381 out:
6382 return status;
6383 }
6384
6385 /*
6386 * Decode FS_LOCATIONS response
6387 */
6388 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6389 struct xdr_stream *xdr,
6390 struct nfs4_fs_locations_res *res)
6391 {
6392 struct compound_hdr hdr;
6393 int status;
6394
6395 status = decode_compound_hdr(xdr, &hdr);
6396 if (status)
6397 goto out;
6398 status = decode_sequence(xdr, &res->seq_res, req);
6399 if (status)
6400 goto out;
6401 status = decode_putfh(xdr);
6402 if (status)
6403 goto out;
6404 status = decode_lookup(xdr);
6405 if (status)
6406 goto out;
6407 xdr_enter_page(xdr, PAGE_SIZE);
6408 status = decode_getfattr(xdr, &res->fs_locations->fattr,
6409 res->fs_locations->server,
6410 !RPC_IS_ASYNC(req->rq_task));
6411 out:
6412 return status;
6413 }
6414
6415 /*
6416 * Decode SECINFO response
6417 */
6418 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6419 struct xdr_stream *xdr,
6420 struct nfs4_secinfo_res *res)
6421 {
6422 struct compound_hdr hdr;
6423 int status;
6424
6425 status = decode_compound_hdr(xdr, &hdr);
6426 if (status)
6427 goto out;
6428 status = decode_sequence(xdr, &res->seq_res, rqstp);
6429 if (status)
6430 goto out;
6431 status = decode_putfh(xdr);
6432 if (status)
6433 goto out;
6434 status = decode_secinfo(xdr, res);
6435 if (status)
6436 goto out;
6437 out:
6438 return status;
6439 }
6440
6441 #if defined(CONFIG_NFS_V4_1)
6442 /*
6443 * Decode EXCHANGE_ID response
6444 */
6445 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6446 struct xdr_stream *xdr,
6447 void *res)
6448 {
6449 struct compound_hdr hdr;
6450 int status;
6451
6452 status = decode_compound_hdr(xdr, &hdr);
6453 if (!status)
6454 status = decode_exchange_id(xdr, res);
6455 return status;
6456 }
6457
6458 /*
6459 * Decode CREATE_SESSION response
6460 */
6461 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6462 struct xdr_stream *xdr,
6463 struct nfs41_create_session_res *res)
6464 {
6465 struct compound_hdr hdr;
6466 int status;
6467
6468 status = decode_compound_hdr(xdr, &hdr);
6469 if (!status)
6470 status = decode_create_session(xdr, res);
6471 return status;
6472 }
6473
6474 /*
6475 * Decode DESTROY_SESSION response
6476 */
6477 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6478 struct xdr_stream *xdr,
6479 void *res)
6480 {
6481 struct compound_hdr hdr;
6482 int status;
6483
6484 status = decode_compound_hdr(xdr, &hdr);
6485 if (!status)
6486 status = decode_destroy_session(xdr, res);
6487 return status;
6488 }
6489
6490 /*
6491 * Decode SEQUENCE response
6492 */
6493 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6494 struct xdr_stream *xdr,
6495 struct nfs4_sequence_res *res)
6496 {
6497 struct compound_hdr hdr;
6498 int status;
6499
6500 status = decode_compound_hdr(xdr, &hdr);
6501 if (!status)
6502 status = decode_sequence(xdr, res, rqstp);
6503 return status;
6504 }
6505
6506 /*
6507 * Decode GET_LEASE_TIME response
6508 */
6509 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6510 struct xdr_stream *xdr,
6511 struct nfs4_get_lease_time_res *res)
6512 {
6513 struct compound_hdr hdr;
6514 int status;
6515
6516 status = decode_compound_hdr(xdr, &hdr);
6517 if (!status)
6518 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6519 if (!status)
6520 status = decode_putrootfh(xdr);
6521 if (!status)
6522 status = decode_fsinfo(xdr, res->lr_fsinfo);
6523 return status;
6524 }
6525
6526 /*
6527 * Decode RECLAIM_COMPLETE response
6528 */
6529 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6530 struct xdr_stream *xdr,
6531 struct nfs41_reclaim_complete_res *res)
6532 {
6533 struct compound_hdr hdr;
6534 int status;
6535
6536 status = decode_compound_hdr(xdr, &hdr);
6537 if (!status)
6538 status = decode_sequence(xdr, &res->seq_res, rqstp);
6539 if (!status)
6540 status = decode_reclaim_complete(xdr, (void *)NULL);
6541 return status;
6542 }
6543
6544 /*
6545 * Decode GETDEVINFO response
6546 */
6547 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6548 struct xdr_stream *xdr,
6549 struct nfs4_getdeviceinfo_res *res)
6550 {
6551 struct compound_hdr hdr;
6552 int status;
6553
6554 status = decode_compound_hdr(xdr, &hdr);
6555 if (status != 0)
6556 goto out;
6557 status = decode_sequence(xdr, &res->seq_res, rqstp);
6558 if (status != 0)
6559 goto out;
6560 status = decode_getdeviceinfo(xdr, res->pdev);
6561 out:
6562 return status;
6563 }
6564
6565 /*
6566 * Decode LAYOUTGET response
6567 */
6568 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6569 struct xdr_stream *xdr,
6570 struct nfs4_layoutget_res *res)
6571 {
6572 struct compound_hdr hdr;
6573 int status;
6574
6575 status = decode_compound_hdr(xdr, &hdr);
6576 if (status)
6577 goto out;
6578 status = decode_sequence(xdr, &res->seq_res, rqstp);
6579 if (status)
6580 goto out;
6581 status = decode_putfh(xdr);
6582 if (status)
6583 goto out;
6584 status = decode_layoutget(xdr, rqstp, res);
6585 out:
6586 return status;
6587 }
6588
6589 /*
6590 * Decode LAYOUTRETURN response
6591 */
6592 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6593 struct xdr_stream *xdr,
6594 struct nfs4_layoutreturn_res *res)
6595 {
6596 struct compound_hdr hdr;
6597 int status;
6598
6599 status = decode_compound_hdr(xdr, &hdr);
6600 if (status)
6601 goto out;
6602 status = decode_sequence(xdr, &res->seq_res, rqstp);
6603 if (status)
6604 goto out;
6605 status = decode_putfh(xdr);
6606 if (status)
6607 goto out;
6608 status = decode_layoutreturn(xdr, res);
6609 out:
6610 return status;
6611 }
6612
6613 /*
6614 * Decode LAYOUTCOMMIT response
6615 */
6616 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6617 struct xdr_stream *xdr,
6618 struct nfs4_layoutcommit_res *res)
6619 {
6620 struct compound_hdr hdr;
6621 int status;
6622
6623 status = decode_compound_hdr(xdr, &hdr);
6624 if (status)
6625 goto out;
6626 status = decode_sequence(xdr, &res->seq_res, rqstp);
6627 if (status)
6628 goto out;
6629 status = decode_putfh(xdr);
6630 if (status)
6631 goto out;
6632 status = decode_layoutcommit(xdr, rqstp, res);
6633 if (status)
6634 goto out;
6635 decode_getfattr(xdr, res->fattr, res->server,
6636 !RPC_IS_ASYNC(rqstp->rq_task));
6637 out:
6638 return status;
6639 }
6640
6641 /*
6642 * Decode SECINFO_NO_NAME response
6643 */
6644 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
6645 struct xdr_stream *xdr,
6646 struct nfs4_secinfo_res *res)
6647 {
6648 struct compound_hdr hdr;
6649 int status;
6650
6651 status = decode_compound_hdr(xdr, &hdr);
6652 if (status)
6653 goto out;
6654 status = decode_sequence(xdr, &res->seq_res, rqstp);
6655 if (status)
6656 goto out;
6657 status = decode_putrootfh(xdr);
6658 if (status)
6659 goto out;
6660 status = decode_secinfo(xdr, res);
6661 out:
6662 return status;
6663 }
6664
6665 /*
6666 * Decode TEST_STATEID response
6667 */
6668 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
6669 struct xdr_stream *xdr,
6670 struct nfs41_test_stateid_res *res)
6671 {
6672 struct compound_hdr hdr;
6673 int status;
6674
6675 status = decode_compound_hdr(xdr, &hdr);
6676 if (status)
6677 goto out;
6678 status = decode_sequence(xdr, &res->seq_res, rqstp);
6679 if (status)
6680 goto out;
6681 status = decode_test_stateid(xdr, res);
6682 out:
6683 return status;
6684 }
6685
6686 /*
6687 * Decode FREE_STATEID response
6688 */
6689 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
6690 struct xdr_stream *xdr,
6691 struct nfs41_free_stateid_res *res)
6692 {
6693 struct compound_hdr hdr;
6694 int status;
6695
6696 status = decode_compound_hdr(xdr, &hdr);
6697 if (status)
6698 goto out;
6699 status = decode_sequence(xdr, &res->seq_res, rqstp);
6700 if (status)
6701 goto out;
6702 status = decode_free_stateid(xdr, res);
6703 out:
6704 return status;
6705 }
6706 #endif /* CONFIG_NFS_V4_1 */
6707
6708 /**
6709 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
6710 * the local page cache.
6711 * @xdr: XDR stream where entry resides
6712 * @entry: buffer to fill in with entry data
6713 * @plus: boolean indicating whether this should be a readdirplus entry
6714 *
6715 * Returns zero if successful, otherwise a negative errno value is
6716 * returned.
6717 *
6718 * This function is not invoked during READDIR reply decoding, but
6719 * rather whenever an application invokes the getdents(2) system call
6720 * on a directory already in our cache.
6721 */
6722 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
6723 int plus)
6724 {
6725 uint32_t bitmap[2] = {0};
6726 uint32_t len;
6727 __be32 *p = xdr_inline_decode(xdr, 4);
6728 if (unlikely(!p))
6729 goto out_overflow;
6730 if (*p == xdr_zero) {
6731 p = xdr_inline_decode(xdr, 4);
6732 if (unlikely(!p))
6733 goto out_overflow;
6734 if (*p == xdr_zero)
6735 return -EAGAIN;
6736 entry->eof = 1;
6737 return -EBADCOOKIE;
6738 }
6739
6740 p = xdr_inline_decode(xdr, 12);
6741 if (unlikely(!p))
6742 goto out_overflow;
6743 entry->prev_cookie = entry->cookie;
6744 p = xdr_decode_hyper(p, &entry->cookie);
6745 entry->len = be32_to_cpup(p);
6746
6747 p = xdr_inline_decode(xdr, entry->len);
6748 if (unlikely(!p))
6749 goto out_overflow;
6750 entry->name = (const char *) p;
6751
6752 /*
6753 * In case the server doesn't return an inode number,
6754 * we fake one here. (We don't use inode number 0,
6755 * since glibc seems to choke on it...)
6756 */
6757 entry->ino = 1;
6758 entry->fattr->valid = 0;
6759
6760 if (decode_attr_bitmap(xdr, bitmap) < 0)
6761 goto out_overflow;
6762
6763 if (decode_attr_length(xdr, &len, &p) < 0)
6764 goto out_overflow;
6765
6766 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
6767 entry->server, 1) < 0)
6768 goto out_overflow;
6769 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
6770 entry->ino = entry->fattr->mounted_on_fileid;
6771 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
6772 entry->ino = entry->fattr->fileid;
6773
6774 entry->d_type = DT_UNKNOWN;
6775 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
6776 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
6777
6778 return 0;
6779
6780 out_overflow:
6781 print_overflow_msg(__func__, xdr);
6782 return -EAGAIN;
6783 }
6784
6785 /*
6786 * We need to translate between nfs status return values and
6787 * the local errno values which may not be the same.
6788 */
6789 static struct {
6790 int stat;
6791 int errno;
6792 } nfs_errtbl[] = {
6793 { NFS4_OK, 0 },
6794 { NFS4ERR_PERM, -EPERM },
6795 { NFS4ERR_NOENT, -ENOENT },
6796 { NFS4ERR_IO, -errno_NFSERR_IO},
6797 { NFS4ERR_NXIO, -ENXIO },
6798 { NFS4ERR_ACCESS, -EACCES },
6799 { NFS4ERR_EXIST, -EEXIST },
6800 { NFS4ERR_XDEV, -EXDEV },
6801 { NFS4ERR_NOTDIR, -ENOTDIR },
6802 { NFS4ERR_ISDIR, -EISDIR },
6803 { NFS4ERR_INVAL, -EINVAL },
6804 { NFS4ERR_FBIG, -EFBIG },
6805 { NFS4ERR_NOSPC, -ENOSPC },
6806 { NFS4ERR_ROFS, -EROFS },
6807 { NFS4ERR_MLINK, -EMLINK },
6808 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
6809 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
6810 { NFS4ERR_DQUOT, -EDQUOT },
6811 { NFS4ERR_STALE, -ESTALE },
6812 { NFS4ERR_BADHANDLE, -EBADHANDLE },
6813 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
6814 { NFS4ERR_NOTSUPP, -ENOTSUPP },
6815 { NFS4ERR_TOOSMALL, -ETOOSMALL },
6816 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
6817 { NFS4ERR_BADTYPE, -EBADTYPE },
6818 { NFS4ERR_LOCKED, -EAGAIN },
6819 { NFS4ERR_SYMLINK, -ELOOP },
6820 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
6821 { NFS4ERR_DEADLOCK, -EDEADLK },
6822 { -1, -EIO }
6823 };
6824
6825 /*
6826 * Convert an NFS error code to a local one.
6827 * This one is used jointly by NFSv2 and NFSv3.
6828 */
6829 static int
6830 nfs4_stat_to_errno(int stat)
6831 {
6832 int i;
6833 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
6834 if (nfs_errtbl[i].stat == stat)
6835 return nfs_errtbl[i].errno;
6836 }
6837 if (stat <= 10000 || stat > 10100) {
6838 /* The server is looney tunes. */
6839 return -EREMOTEIO;
6840 }
6841 /* If we cannot translate the error, the recovery routines should
6842 * handle it.
6843 * Note: remaining NFSv4 error codes have values > 10000, so should
6844 * not conflict with native Linux error codes.
6845 */
6846 return -stat;
6847 }
6848
6849 #define PROC(proc, argtype, restype) \
6850 [NFSPROC4_CLNT_##proc] = { \
6851 .p_proc = NFSPROC4_COMPOUND, \
6852 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
6853 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
6854 .p_arglen = NFS4_##argtype##_sz, \
6855 .p_replen = NFS4_##restype##_sz, \
6856 .p_statidx = NFSPROC4_CLNT_##proc, \
6857 .p_name = #proc, \
6858 }
6859
6860 struct rpc_procinfo nfs4_procedures[] = {
6861 PROC(READ, enc_read, dec_read),
6862 PROC(WRITE, enc_write, dec_write),
6863 PROC(COMMIT, enc_commit, dec_commit),
6864 PROC(OPEN, enc_open, dec_open),
6865 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
6866 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
6867 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
6868 PROC(CLOSE, enc_close, dec_close),
6869 PROC(SETATTR, enc_setattr, dec_setattr),
6870 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
6871 PROC(RENEW, enc_renew, dec_renew),
6872 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
6873 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
6874 PROC(LOCK, enc_lock, dec_lock),
6875 PROC(LOCKT, enc_lockt, dec_lockt),
6876 PROC(LOCKU, enc_locku, dec_locku),
6877 PROC(ACCESS, enc_access, dec_access),
6878 PROC(GETATTR, enc_getattr, dec_getattr),
6879 PROC(LOOKUP, enc_lookup, dec_lookup),
6880 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
6881 PROC(REMOVE, enc_remove, dec_remove),
6882 PROC(RENAME, enc_rename, dec_rename),
6883 PROC(LINK, enc_link, dec_link),
6884 PROC(SYMLINK, enc_symlink, dec_symlink),
6885 PROC(CREATE, enc_create, dec_create),
6886 PROC(PATHCONF, enc_pathconf, dec_pathconf),
6887 PROC(STATFS, enc_statfs, dec_statfs),
6888 PROC(READLINK, enc_readlink, dec_readlink),
6889 PROC(READDIR, enc_readdir, dec_readdir),
6890 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
6891 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
6892 PROC(GETACL, enc_getacl, dec_getacl),
6893 PROC(SETACL, enc_setacl, dec_setacl),
6894 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
6895 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
6896 PROC(SECINFO, enc_secinfo, dec_secinfo),
6897 #if defined(CONFIG_NFS_V4_1)
6898 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
6899 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
6900 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
6901 PROC(SEQUENCE, enc_sequence, dec_sequence),
6902 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
6903 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
6904 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
6905 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
6906 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
6907 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
6908 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
6909 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
6910 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
6911 #endif /* CONFIG_NFS_V4_1 */
6912 };
6913
6914 struct rpc_version nfs_version4 = {
6915 .number = 4,
6916 .nrprocs = ARRAY_SIZE(nfs4_procedures),
6917 .procs = nfs4_procedures
6918 };
6919
6920 /*
6921 * Local variables:
6922 * c-basic-offset: 8
6923 * End:
6924 */
Mirror of the linux-mips.org kernel tree