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Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
[linux/fpc-iii.git] / fs / nfs / nfs4xdr.c
blob26b143920433e628456476e0d1b708b8fc395d43
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/module.h>
48 #include <linux/utsname.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/sunrpc/msg_prot.h>
51 #include <linux/sunrpc/gss_api.h>
52 #include <linux/nfs.h>
53 #include <linux/nfs4.h>
54 #include <linux/nfs_fs.h>
55 #include <linux/nfs_idmap.h>
56
57 #include "nfs4_fs.h"
58 #include "internal.h"
59 #include "nfs4session.h"
60 #include "pnfs.h"
61 #include "netns.h"
62
63 #define NFSDBG_FACILITY NFSDBG_XDR
64
65 /* Mapping from NFS error code to "errno" error code. */
66 #define errno_NFSERR_IO EIO
67
68 static int nfs4_stat_to_errno(int);
69
70 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
71 #ifdef DEBUG
72 #define NFS4_MAXTAGLEN 20
73 #else
74 #define NFS4_MAXTAGLEN 0
75 #endif
76
77 /* lock,open owner id:
78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
79 */
80 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
81 #define lock_owner_id_maxsz (1 + 1 + 4)
82 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
83 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85 #define op_encode_hdr_maxsz (1)
86 #define op_decode_hdr_maxsz (2)
87 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
92 (NFS4_FHSIZE >> 2))
93 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
94 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
97 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
99 #define nfs4_fattr_bitmap_maxsz 4
100 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
101 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
103 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105 /* We support only one layout type per file system */
106 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
107 /* This is based on getfattr, which uses the most attributes: */
108 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
109 3 + 3 + 3 + nfs4_owner_maxsz + \
110 nfs4_group_maxsz + decode_mdsthreshold_maxsz))
111 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
112 nfs4_fattr_value_maxsz)
113 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
114 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
115 1 + 2 + 1 + \
116 nfs4_owner_maxsz + \
117 nfs4_group_maxsz + \
118 4 + 4)
119 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
120 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
121 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
122 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
123 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
124 /* The 5 accounts for the PNFS attributes, and assumes that at most three
125 * layout types will be returned.
126 */
127 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
128 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
129 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
130 #define decode_renew_maxsz (op_decode_hdr_maxsz)
131 #define encode_setclientid_maxsz \
132 (op_encode_hdr_maxsz + \
133 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
134 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
135 1 /* sc_prog */ + \
136 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
137 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
138 1) /* sc_cb_ident */
139 #define decode_setclientid_maxsz \
140 (op_decode_hdr_maxsz + \
141 2 + \
142 1024) /* large value for CLID_INUSE */
143 #define encode_setclientid_confirm_maxsz \
144 (op_encode_hdr_maxsz + \
145 3 + (NFS4_VERIFIER_SIZE >> 2))
146 #define decode_setclientid_confirm_maxsz \
147 (op_decode_hdr_maxsz)
148 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
149 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
150 #define encode_share_access_maxsz \
151 (2)
152 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
153 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
154 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
155 #define encode_open_maxsz (op_encode_hdr_maxsz + \
156 2 + encode_share_access_maxsz + 2 + \
157 open_owner_id_maxsz + \
158 encode_opentype_maxsz + \
159 encode_claim_null_maxsz)
160 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
161 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
162 decode_ace_maxsz)
163 #define decode_change_info_maxsz (5)
164 #define decode_open_maxsz (op_decode_hdr_maxsz + \
165 decode_stateid_maxsz + \
166 decode_change_info_maxsz + 1 + \
167 nfs4_fattr_bitmap_maxsz + \
168 decode_delegation_maxsz)
169 #define encode_open_confirm_maxsz \
170 (op_encode_hdr_maxsz + \
171 encode_stateid_maxsz + 1)
172 #define decode_open_confirm_maxsz \
173 (op_decode_hdr_maxsz + \
174 decode_stateid_maxsz)
175 #define encode_open_downgrade_maxsz \
176 (op_encode_hdr_maxsz + \
177 encode_stateid_maxsz + 1 + \
178 encode_share_access_maxsz)
179 #define decode_open_downgrade_maxsz \
180 (op_decode_hdr_maxsz + \
181 decode_stateid_maxsz)
182 #define encode_close_maxsz (op_encode_hdr_maxsz + \
183 1 + encode_stateid_maxsz)
184 #define decode_close_maxsz (op_decode_hdr_maxsz + \
185 decode_stateid_maxsz)
186 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
187 encode_stateid_maxsz + \
188 encode_attrs_maxsz)
189 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
190 nfs4_fattr_bitmap_maxsz)
191 #define encode_read_maxsz (op_encode_hdr_maxsz + \
192 encode_stateid_maxsz + 3)
193 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
194 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
195 2 + encode_verifier_maxsz + 5)
196 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
197 decode_verifier_maxsz)
198 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
199 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
200 #define encode_write_maxsz (op_encode_hdr_maxsz + \
201 encode_stateid_maxsz + 4)
202 #define decode_write_maxsz (op_decode_hdr_maxsz + \
203 2 + decode_verifier_maxsz)
204 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
205 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
206 decode_verifier_maxsz)
207 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
208 nfs4_name_maxsz)
209 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
210 decode_change_info_maxsz)
211 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
212 2 * nfs4_name_maxsz)
213 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
214 decode_change_info_maxsz + \
215 decode_change_info_maxsz)
216 #define encode_link_maxsz (op_encode_hdr_maxsz + \
217 nfs4_name_maxsz)
218 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
219 #define encode_lockowner_maxsz (7)
220 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
221 7 + \
222 1 + encode_stateid_maxsz + 1 + \
223 encode_lockowner_maxsz)
224 #define decode_lock_denied_maxsz \
225 (8 + decode_lockowner_maxsz)
226 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
227 decode_lock_denied_maxsz)
228 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
229 encode_lockowner_maxsz)
230 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
231 decode_lock_denied_maxsz)
232 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
233 encode_stateid_maxsz + \
234 4)
235 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
236 decode_stateid_maxsz)
237 #define encode_release_lockowner_maxsz \
238 (op_encode_hdr_maxsz + \
239 encode_lockowner_maxsz)
240 #define decode_release_lockowner_maxsz \
241 (op_decode_hdr_maxsz)
242 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
243 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
244 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
245 1 + nfs4_name_maxsz + \
246 1 + \
247 nfs4_fattr_maxsz)
248 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
249 #define encode_create_maxsz (op_encode_hdr_maxsz + \
250 1 + 2 + nfs4_name_maxsz + \
251 encode_attrs_maxsz)
252 #define decode_create_maxsz (op_decode_hdr_maxsz + \
253 decode_change_info_maxsz + \
254 nfs4_fattr_bitmap_maxsz)
255 #define encode_statfs_maxsz (encode_getattr_maxsz)
256 #define decode_statfs_maxsz (decode_getattr_maxsz)
257 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
258 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
259 #define encode_getacl_maxsz (encode_getattr_maxsz)
260 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
261 nfs4_fattr_bitmap_maxsz + 1)
262 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
263 encode_stateid_maxsz + 3)
264 #define decode_setacl_maxsz (decode_setattr_maxsz)
265 #define encode_fs_locations_maxsz \
266 (encode_getattr_maxsz)
267 #define decode_fs_locations_maxsz \
268 (0)
269 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
270 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
271
272 #if defined(CONFIG_NFS_V4_1)
273 #define NFS4_MAX_MACHINE_NAME_LEN (64)
274 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
275 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
276
277 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
278 encode_verifier_maxsz + \
279 1 /* co_ownerid.len */ + \
280 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
281 1 /* flags */ + \
282 1 /* spa_how */ + \
283 0 /* SP4_NONE (for now) */ + \
284 1 /* implementation id array of size 1 */ + \
285 1 /* nii_domain */ + \
286 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
287 1 /* nii_name */ + \
288 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
289 3 /* nii_date */)
290 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
291 2 /* eir_clientid */ + \
292 1 /* eir_sequenceid */ + \
293 1 /* eir_flags */ + \
294 1 /* spr_how */ + \
295 0 /* SP4_NONE (for now) */ + \
296 2 /* eir_server_owner.so_minor_id */ + \
297 /* eir_server_owner.so_major_id<> */ \
298 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
299 /* eir_server_scope<> */ \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
301 1 /* eir_server_impl_id array length */ + \
302 1 /* nii_domain */ + \
303 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
304 1 /* nii_name */ + \
305 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
306 3 /* nii_date */)
307 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
308 #define decode_channel_attrs_maxsz (6 + \
309 1 /* ca_rdma_ird.len */ + \
310 1 /* ca_rdma_ird */)
311 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
312 2 /* csa_clientid */ + \
313 1 /* csa_sequence */ + \
314 1 /* csa_flags */ + \
315 encode_channel_attrs_maxsz + \
316 encode_channel_attrs_maxsz + \
317 1 /* csa_cb_program */ + \
318 1 /* csa_sec_parms.len (1) */ + \
319 1 /* cb_secflavor (AUTH_SYS) */ + \
320 1 /* stamp */ + \
321 1 /* machinename.len */ + \
322 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
323 1 /* uid */ + \
324 1 /* gid */ + \
325 1 /* gids.len (0) */)
326 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
327 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
328 1 /* csr_sequence */ + \
329 1 /* csr_flags */ + \
330 decode_channel_attrs_maxsz + \
331 decode_channel_attrs_maxsz)
332 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
333 /* bctsa_sessid */ \
334 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
335 1 /* bctsa_dir */ + \
336 1 /* bctsa_use_conn_in_rdma_mode */)
337 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
338 /* bctsr_sessid */ \
339 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
340 1 /* bctsr_dir */ + \
341 1 /* bctsr_use_conn_in_rdma_mode */)
342 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
343 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
344 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
345 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
346 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
347 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
348 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
349 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
350 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
351 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
352 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
353 encode_verifier_maxsz)
354 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
355 2 /* nfs_cookie4 gdlr_cookie */ + \
356 decode_verifier_maxsz \
357 /* verifier4 gdlr_verifier */ + \
358 1 /* gdlr_deviceid_list count */ + \
359 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
360 NFS4_DEVICEID4_SIZE) \
361 /* gdlr_deviceid_list */ + \
362 1 /* bool gdlr_eof */)
363 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
364 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
365 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
366 1 /* layout type */ + \
367 1 /* opaque devaddr4 length */ + \
368 /* devaddr4 payload is read into page */ \
369 1 /* notification bitmap length */ + \
370 1 /* notification bitmap */)
371 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
372 encode_stateid_maxsz)
373 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
374 decode_stateid_maxsz + \
375 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
376 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
377 2 /* offset */ + \
378 2 /* length */ + \
379 1 /* reclaim */ + \
380 encode_stateid_maxsz + \
381 1 /* new offset (true) */ + \
382 2 /* last byte written */ + \
383 1 /* nt_timechanged (false) */ + \
384 1 /* layoutupdate4 layout type */ + \
385 1 /* NULL filelayout layoutupdate4 payload */)
386 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
387 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
388 encode_stateid_maxsz + \
389 1 /* FIXME: opaque lrf_body always empty at the moment */)
390 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
391 1 + decode_stateid_maxsz)
392 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
393 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
394 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
395 XDR_QUADLEN(NFS4_STATEID_SIZE))
396 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
397 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
398 XDR_QUADLEN(NFS4_STATEID_SIZE))
399 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
400 #else /* CONFIG_NFS_V4_1 */
401 #define encode_sequence_maxsz 0
402 #define decode_sequence_maxsz 0
403 #endif /* CONFIG_NFS_V4_1 */
404
405 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
406 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
407 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
408 encode_sequence_maxsz + \
409 encode_putfh_maxsz + \
410 encode_read_maxsz)
411 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
412 decode_sequence_maxsz + \
413 decode_putfh_maxsz + \
414 decode_read_maxsz)
415 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
416 encode_sequence_maxsz + \
417 encode_putfh_maxsz + \
418 encode_readlink_maxsz)
419 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
420 decode_sequence_maxsz + \
421 decode_putfh_maxsz + \
422 decode_readlink_maxsz)
423 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
424 encode_sequence_maxsz + \
425 encode_putfh_maxsz + \
426 encode_readdir_maxsz)
427 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
428 decode_sequence_maxsz + \
429 decode_putfh_maxsz + \
430 decode_readdir_maxsz)
431 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
432 encode_sequence_maxsz + \
433 encode_putfh_maxsz + \
434 encode_write_maxsz + \
435 encode_getattr_maxsz)
436 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
437 decode_sequence_maxsz + \
438 decode_putfh_maxsz + \
439 decode_write_maxsz + \
440 decode_getattr_maxsz)
441 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
442 encode_sequence_maxsz + \
443 encode_putfh_maxsz + \
444 encode_commit_maxsz)
445 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
446 decode_sequence_maxsz + \
447 decode_putfh_maxsz + \
448 decode_commit_maxsz)
449 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
450 encode_sequence_maxsz + \
451 encode_putfh_maxsz + \
452 encode_open_maxsz + \
453 encode_access_maxsz + \
454 encode_getfh_maxsz + \
455 encode_getattr_maxsz)
456 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
457 decode_sequence_maxsz + \
458 decode_putfh_maxsz + \
459 decode_open_maxsz + \
460 decode_access_maxsz + \
461 decode_getfh_maxsz + \
462 decode_getattr_maxsz)
463 #define NFS4_enc_open_confirm_sz \
464 (compound_encode_hdr_maxsz + \
465 encode_putfh_maxsz + \
466 encode_open_confirm_maxsz)
467 #define NFS4_dec_open_confirm_sz \
468 (compound_decode_hdr_maxsz + \
469 decode_putfh_maxsz + \
470 decode_open_confirm_maxsz)
471 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
472 encode_sequence_maxsz + \
473 encode_putfh_maxsz + \
474 encode_open_maxsz + \
475 encode_access_maxsz + \
476 encode_getattr_maxsz)
477 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
478 decode_sequence_maxsz + \
479 decode_putfh_maxsz + \
480 decode_open_maxsz + \
481 decode_access_maxsz + \
482 decode_getattr_maxsz)
483 #define NFS4_enc_open_downgrade_sz \
484 (compound_encode_hdr_maxsz + \
485 encode_sequence_maxsz + \
486 encode_putfh_maxsz + \
487 encode_open_downgrade_maxsz + \
488 encode_getattr_maxsz)
489 #define NFS4_dec_open_downgrade_sz \
490 (compound_decode_hdr_maxsz + \
491 decode_sequence_maxsz + \
492 decode_putfh_maxsz + \
493 decode_open_downgrade_maxsz + \
494 decode_getattr_maxsz)
495 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
496 encode_sequence_maxsz + \
497 encode_putfh_maxsz + \
498 encode_close_maxsz + \
499 encode_getattr_maxsz)
500 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
501 decode_sequence_maxsz + \
502 decode_putfh_maxsz + \
503 decode_close_maxsz + \
504 decode_getattr_maxsz)
505 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
506 encode_sequence_maxsz + \
507 encode_putfh_maxsz + \
508 encode_setattr_maxsz + \
509 encode_getattr_maxsz)
510 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
511 decode_sequence_maxsz + \
512 decode_putfh_maxsz + \
513 decode_setattr_maxsz + \
514 decode_getattr_maxsz)
515 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
516 encode_sequence_maxsz + \
517 encode_putfh_maxsz + \
518 encode_fsinfo_maxsz)
519 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
520 decode_sequence_maxsz + \
521 decode_putfh_maxsz + \
522 decode_fsinfo_maxsz)
523 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
524 encode_renew_maxsz)
525 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
526 decode_renew_maxsz)
527 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
528 encode_setclientid_maxsz)
529 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
530 decode_setclientid_maxsz)
531 #define NFS4_enc_setclientid_confirm_sz \
532 (compound_encode_hdr_maxsz + \
533 encode_setclientid_confirm_maxsz + \
534 encode_putrootfh_maxsz + \
535 encode_fsinfo_maxsz)
536 #define NFS4_dec_setclientid_confirm_sz \
537 (compound_decode_hdr_maxsz + \
538 decode_setclientid_confirm_maxsz + \
539 decode_putrootfh_maxsz + \
540 decode_fsinfo_maxsz)
541 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
542 encode_sequence_maxsz + \
543 encode_putfh_maxsz + \
544 encode_lock_maxsz)
545 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
546 decode_sequence_maxsz + \
547 decode_putfh_maxsz + \
548 decode_lock_maxsz)
549 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
550 encode_sequence_maxsz + \
551 encode_putfh_maxsz + \
552 encode_lockt_maxsz)
553 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
554 decode_sequence_maxsz + \
555 decode_putfh_maxsz + \
556 decode_lockt_maxsz)
557 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
558 encode_sequence_maxsz + \
559 encode_putfh_maxsz + \
560 encode_locku_maxsz)
561 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
562 decode_sequence_maxsz + \
563 decode_putfh_maxsz + \
564 decode_locku_maxsz)
565 #define NFS4_enc_release_lockowner_sz \
566 (compound_encode_hdr_maxsz + \
567 encode_lockowner_maxsz)
568 #define NFS4_dec_release_lockowner_sz \
569 (compound_decode_hdr_maxsz + \
570 decode_lockowner_maxsz)
571 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
572 encode_sequence_maxsz + \
573 encode_putfh_maxsz + \
574 encode_access_maxsz + \
575 encode_getattr_maxsz)
576 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
577 decode_sequence_maxsz + \
578 decode_putfh_maxsz + \
579 decode_access_maxsz + \
580 decode_getattr_maxsz)
581 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
582 encode_sequence_maxsz + \
583 encode_putfh_maxsz + \
584 encode_getattr_maxsz)
585 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
586 decode_sequence_maxsz + \
587 decode_putfh_maxsz + \
588 decode_getattr_maxsz)
589 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_lookup_maxsz + \
593 encode_getattr_maxsz + \
594 encode_getfh_maxsz)
595 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_lookup_maxsz + \
599 decode_getattr_maxsz + \
600 decode_getfh_maxsz)
601 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
602 encode_sequence_maxsz + \
603 encode_putrootfh_maxsz + \
604 encode_getattr_maxsz + \
605 encode_getfh_maxsz)
606 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
607 decode_sequence_maxsz + \
608 decode_putrootfh_maxsz + \
609 decode_getattr_maxsz + \
610 decode_getfh_maxsz)
611 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
612 encode_sequence_maxsz + \
613 encode_putfh_maxsz + \
614 encode_remove_maxsz)
615 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
616 decode_sequence_maxsz + \
617 decode_putfh_maxsz + \
618 decode_remove_maxsz)
619 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putfh_maxsz + \
622 encode_savefh_maxsz + \
623 encode_putfh_maxsz + \
624 encode_rename_maxsz)
625 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
626 decode_sequence_maxsz + \
627 decode_putfh_maxsz + \
628 decode_savefh_maxsz + \
629 decode_putfh_maxsz + \
630 decode_rename_maxsz)
631 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
632 encode_sequence_maxsz + \
633 encode_putfh_maxsz + \
634 encode_savefh_maxsz + \
635 encode_putfh_maxsz + \
636 encode_link_maxsz + \
637 encode_restorefh_maxsz + \
638 encode_getattr_maxsz)
639 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
640 decode_sequence_maxsz + \
641 decode_putfh_maxsz + \
642 decode_savefh_maxsz + \
643 decode_putfh_maxsz + \
644 decode_link_maxsz + \
645 decode_restorefh_maxsz + \
646 decode_getattr_maxsz)
647 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
648 encode_sequence_maxsz + \
649 encode_putfh_maxsz + \
650 encode_symlink_maxsz + \
651 encode_getattr_maxsz + \
652 encode_getfh_maxsz)
653 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
654 decode_sequence_maxsz + \
655 decode_putfh_maxsz + \
656 decode_symlink_maxsz + \
657 decode_getattr_maxsz + \
658 decode_getfh_maxsz)
659 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
660 encode_sequence_maxsz + \
661 encode_putfh_maxsz + \
662 encode_create_maxsz + \
663 encode_getfh_maxsz + \
664 encode_getattr_maxsz)
665 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
666 decode_sequence_maxsz + \
667 decode_putfh_maxsz + \
668 decode_create_maxsz + \
669 decode_getfh_maxsz + \
670 decode_getattr_maxsz)
671 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
672 encode_sequence_maxsz + \
673 encode_putfh_maxsz + \
674 encode_getattr_maxsz)
675 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
676 decode_sequence_maxsz + \
677 decode_putfh_maxsz + \
678 decode_getattr_maxsz)
679 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
680 encode_sequence_maxsz + \
681 encode_putfh_maxsz + \
682 encode_statfs_maxsz)
683 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
684 decode_sequence_maxsz + \
685 decode_putfh_maxsz + \
686 decode_statfs_maxsz)
687 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
688 encode_sequence_maxsz + \
689 encode_putfh_maxsz + \
690 encode_getattr_maxsz)
691 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
692 decode_sequence_maxsz + \
693 decode_putfh_maxsz + \
694 decode_getattr_maxsz)
695 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
696 encode_sequence_maxsz + \
697 encode_putfh_maxsz + \
698 encode_delegreturn_maxsz + \
699 encode_getattr_maxsz)
700 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
701 decode_sequence_maxsz + \
702 decode_delegreturn_maxsz + \
703 decode_getattr_maxsz)
704 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
705 encode_sequence_maxsz + \
706 encode_putfh_maxsz + \
707 encode_getacl_maxsz)
708 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
709 decode_sequence_maxsz + \
710 decode_putfh_maxsz + \
711 decode_getacl_maxsz)
712 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
713 encode_sequence_maxsz + \
714 encode_putfh_maxsz + \
715 encode_setacl_maxsz)
716 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
717 decode_sequence_maxsz + \
718 decode_putfh_maxsz + \
719 decode_setacl_maxsz)
720 #define NFS4_enc_fs_locations_sz \
721 (compound_encode_hdr_maxsz + \
722 encode_sequence_maxsz + \
723 encode_putfh_maxsz + \
724 encode_lookup_maxsz + \
725 encode_fs_locations_maxsz)
726 #define NFS4_dec_fs_locations_sz \
727 (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz + \
729 decode_putfh_maxsz + \
730 decode_lookup_maxsz + \
731 decode_fs_locations_maxsz)
732 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
733 encode_sequence_maxsz + \
734 encode_putfh_maxsz + \
735 encode_secinfo_maxsz)
736 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
737 decode_sequence_maxsz + \
738 decode_putfh_maxsz + \
739 decode_secinfo_maxsz)
740 #if defined(CONFIG_NFS_V4_1)
741 #define NFS4_enc_bind_conn_to_session_sz \
742 (compound_encode_hdr_maxsz + \
743 encode_bind_conn_to_session_maxsz)
744 #define NFS4_dec_bind_conn_to_session_sz \
745 (compound_decode_hdr_maxsz + \
746 decode_bind_conn_to_session_maxsz)
747 #define NFS4_enc_exchange_id_sz \
748 (compound_encode_hdr_maxsz + \
749 encode_exchange_id_maxsz)
750 #define NFS4_dec_exchange_id_sz \
751 (compound_decode_hdr_maxsz + \
752 decode_exchange_id_maxsz)
753 #define NFS4_enc_create_session_sz \
754 (compound_encode_hdr_maxsz + \
755 encode_create_session_maxsz)
756 #define NFS4_dec_create_session_sz \
757 (compound_decode_hdr_maxsz + \
758 decode_create_session_maxsz)
759 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
760 encode_destroy_session_maxsz)
761 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
762 decode_destroy_session_maxsz)
763 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
764 encode_destroy_clientid_maxsz)
765 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
766 decode_destroy_clientid_maxsz)
767 #define NFS4_enc_sequence_sz \
768 (compound_decode_hdr_maxsz + \
769 encode_sequence_maxsz)
770 #define NFS4_dec_sequence_sz \
771 (compound_decode_hdr_maxsz + \
772 decode_sequence_maxsz)
773 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
774 encode_sequence_maxsz + \
775 encode_putrootfh_maxsz + \
776 encode_fsinfo_maxsz)
777 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_putrootfh_maxsz + \
780 decode_fsinfo_maxsz)
781 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
782 encode_sequence_maxsz + \
783 encode_reclaim_complete_maxsz)
784 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
785 decode_sequence_maxsz + \
786 decode_reclaim_complete_maxsz)
787 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
788 encode_sequence_maxsz + \
789 encode_putfh_maxsz + \
790 encode_getdevicelist_maxsz)
791 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
792 decode_sequence_maxsz + \
793 decode_putfh_maxsz + \
794 decode_getdevicelist_maxsz)
795 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
796 encode_sequence_maxsz +\
797 encode_getdeviceinfo_maxsz)
798 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
799 decode_sequence_maxsz + \
800 decode_getdeviceinfo_maxsz)
801 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
802 encode_sequence_maxsz + \
803 encode_putfh_maxsz + \
804 encode_layoutget_maxsz)
805 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
806 decode_sequence_maxsz + \
807 decode_putfh_maxsz + \
808 decode_layoutget_maxsz)
809 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
810 encode_sequence_maxsz +\
811 encode_putfh_maxsz + \
812 encode_layoutcommit_maxsz + \
813 encode_getattr_maxsz)
814 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
815 decode_sequence_maxsz + \
816 decode_putfh_maxsz + \
817 decode_layoutcommit_maxsz + \
818 decode_getattr_maxsz)
819 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
820 encode_sequence_maxsz + \
821 encode_putfh_maxsz + \
822 encode_layoutreturn_maxsz)
823 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
824 decode_sequence_maxsz + \
825 decode_putfh_maxsz + \
826 decode_layoutreturn_maxsz)
827 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
828 encode_sequence_maxsz + \
829 encode_putrootfh_maxsz +\
830 encode_secinfo_no_name_maxsz)
831 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
832 decode_sequence_maxsz + \
833 decode_putrootfh_maxsz + \
834 decode_secinfo_no_name_maxsz)
835 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
836 encode_sequence_maxsz + \
837 encode_test_stateid_maxsz)
838 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
839 decode_sequence_maxsz + \
840 decode_test_stateid_maxsz)
841 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
842 encode_sequence_maxsz + \
843 encode_free_stateid_maxsz)
844 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
845 decode_sequence_maxsz + \
846 decode_free_stateid_maxsz)
847
848 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
849 compound_encode_hdr_maxsz +
850 encode_sequence_maxsz +
851 encode_putfh_maxsz +
852 encode_getattr_maxsz) *
853 XDR_UNIT);
854
855 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
856 compound_decode_hdr_maxsz +
857 decode_sequence_maxsz +
858 decode_putfh_maxsz) *
859 XDR_UNIT);
860 #endif /* CONFIG_NFS_V4_1 */
861
862 static const umode_t nfs_type2fmt[] = {
863 [NF4BAD] = 0,
864 [NF4REG] = S_IFREG,
865 [NF4DIR] = S_IFDIR,
866 [NF4BLK] = S_IFBLK,
867 [NF4CHR] = S_IFCHR,
868 [NF4LNK] = S_IFLNK,
869 [NF4SOCK] = S_IFSOCK,
870 [NF4FIFO] = S_IFIFO,
871 [NF4ATTRDIR] = 0,
872 [NF4NAMEDATTR] = 0,
873 };
874
875 struct compound_hdr {
876 int32_t status;
877 uint32_t nops;
878 __be32 * nops_p;
879 uint32_t taglen;
880 char * tag;
881 uint32_t replen; /* expected reply words */
882 u32 minorversion;
883 };
884
885 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
886 {
887 __be32 *p = xdr_reserve_space(xdr, nbytes);
888 BUG_ON(!p);
889 return p;
890 }
891
892 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
893 {
894 __be32 *p;
895
896 p = xdr_reserve_space(xdr, len);
897 xdr_encode_opaque_fixed(p, buf, len);
898 }
899
900 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
901 {
902 __be32 *p;
903
904 p = reserve_space(xdr, 4 + len);
905 xdr_encode_opaque(p, str, len);
906 }
907
908 static void encode_uint32(struct xdr_stream *xdr, u32 n)
909 {
910 __be32 *p;
911
912 p = reserve_space(xdr, 4);
913 *p = cpu_to_be32(n);
914 }
915
916 static void encode_uint64(struct xdr_stream *xdr, u64 n)
917 {
918 __be32 *p;
919
920 p = reserve_space(xdr, 8);
921 xdr_encode_hyper(p, n);
922 }
923
924 static void encode_nfs4_seqid(struct xdr_stream *xdr,
925 const struct nfs_seqid *seqid)
926 {
927 encode_uint32(xdr, seqid->sequence->counter);
928 }
929
930 static void encode_compound_hdr(struct xdr_stream *xdr,
931 struct rpc_rqst *req,
932 struct compound_hdr *hdr)
933 {
934 __be32 *p;
935 struct rpc_auth *auth = req->rq_cred->cr_auth;
936
937 /* initialize running count of expected bytes in reply.
938 * NOTE: the replied tag SHOULD be the same is the one sent,
939 * but this is not required as a MUST for the server to do so. */
940 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
941
942 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
943 encode_string(xdr, hdr->taglen, hdr->tag);
944 p = reserve_space(xdr, 8);
945 *p++ = cpu_to_be32(hdr->minorversion);
946 hdr->nops_p = p;
947 *p = cpu_to_be32(hdr->nops);
948 }
949
950 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
951 uint32_t replen,
952 struct compound_hdr *hdr)
953 {
954 encode_uint32(xdr, op);
955 hdr->nops++;
956 hdr->replen += replen;
957 }
958
959 static void encode_nops(struct compound_hdr *hdr)
960 {
961 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
962 *hdr->nops_p = htonl(hdr->nops);
963 }
964
965 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
966 {
967 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
968 }
969
970 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
971 {
972 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
973 }
974
975 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
976 {
977 char owner_name[IDMAP_NAMESZ];
978 char owner_group[IDMAP_NAMESZ];
979 int owner_namelen = 0;
980 int owner_grouplen = 0;
981 __be32 *p;
982 __be32 *q;
983 int len;
984 uint32_t bmval0 = 0;
985 uint32_t bmval1 = 0;
986
987 /*
988 * We reserve enough space to write the entire attribute buffer at once.
989 * In the worst-case, this would be
990 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
991 * = 36 bytes, plus any contribution from variable-length fields
992 * such as owner/group.
993 */
994 len = 16;
995
996 /* Sigh */
997 if (iap->ia_valid & ATTR_SIZE)
998 len += 8;
999 if (iap->ia_valid & ATTR_MODE)
1000 len += 4;
1001 if (iap->ia_valid & ATTR_UID) {
1002 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1003 if (owner_namelen < 0) {
1004 dprintk("nfs: couldn't resolve uid %d to string\n",
1005 iap->ia_uid);
1006 /* XXX */
1007 strcpy(owner_name, "nobody");
1008 owner_namelen = sizeof("nobody") - 1;
1009 /* goto out; */
1010 }
1011 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1012 }
1013 if (iap->ia_valid & ATTR_GID) {
1014 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1015 if (owner_grouplen < 0) {
1016 dprintk("nfs: couldn't resolve gid %d to string\n",
1017 iap->ia_gid);
1018 strcpy(owner_group, "nobody");
1019 owner_grouplen = sizeof("nobody") - 1;
1020 /* goto out; */
1021 }
1022 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1023 }
1024 if (iap->ia_valid & ATTR_ATIME_SET)
1025 len += 16;
1026 else if (iap->ia_valid & ATTR_ATIME)
1027 len += 4;
1028 if (iap->ia_valid & ATTR_MTIME_SET)
1029 len += 16;
1030 else if (iap->ia_valid & ATTR_MTIME)
1031 len += 4;
1032 p = reserve_space(xdr, len);
1033
1034 /*
1035 * We write the bitmap length now, but leave the bitmap and the attribute
1036 * buffer length to be backfilled at the end of this routine.
1037 */
1038 *p++ = cpu_to_be32(2);
1039 q = p;
1040 p += 3;
1041
1042 if (iap->ia_valid & ATTR_SIZE) {
1043 bmval0 |= FATTR4_WORD0_SIZE;
1044 p = xdr_encode_hyper(p, iap->ia_size);
1045 }
1046 if (iap->ia_valid & ATTR_MODE) {
1047 bmval1 |= FATTR4_WORD1_MODE;
1048 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1049 }
1050 if (iap->ia_valid & ATTR_UID) {
1051 bmval1 |= FATTR4_WORD1_OWNER;
1052 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1053 }
1054 if (iap->ia_valid & ATTR_GID) {
1055 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1056 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1057 }
1058 if (iap->ia_valid & ATTR_ATIME_SET) {
1059 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1060 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1061 *p++ = cpu_to_be32(0);
1062 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1063 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1064 }
1065 else if (iap->ia_valid & ATTR_ATIME) {
1066 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1067 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1068 }
1069 if (iap->ia_valid & ATTR_MTIME_SET) {
1070 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1071 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1072 *p++ = cpu_to_be32(0);
1073 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1074 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1075 }
1076 else if (iap->ia_valid & ATTR_MTIME) {
1077 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1078 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1079 }
1080
1081 /*
1082 * Now we backfill the bitmap and the attribute buffer length.
1083 */
1084 if (len != ((char *)p - (char *)q) + 4) {
1085 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1086 len, ((char *)p - (char *)q) + 4);
1087 BUG();
1088 }
1089 len = (char *)p - (char *)q - 12;
1090 *q++ = htonl(bmval0);
1091 *q++ = htonl(bmval1);
1092 *q = htonl(len);
1093
1094 /* out: */
1095 }
1096
1097 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1098 {
1099 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1100 encode_uint32(xdr, access);
1101 }
1102
1103 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1104 {
1105 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1106 encode_nfs4_seqid(xdr, arg->seqid);
1107 encode_nfs4_stateid(xdr, arg->stateid);
1108 }
1109
1110 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1111 {
1112 __be32 *p;
1113
1114 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1115 p = reserve_space(xdr, 12);
1116 p = xdr_encode_hyper(p, args->offset);
1117 *p = cpu_to_be32(args->count);
1118 }
1119
1120 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1121 {
1122 __be32 *p;
1123
1124 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1125 encode_uint32(xdr, create->ftype);
1126
1127 switch (create->ftype) {
1128 case NF4LNK:
1129 p = reserve_space(xdr, 4);
1130 *p = cpu_to_be32(create->u.symlink.len);
1131 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1132 break;
1133
1134 case NF4BLK: case NF4CHR:
1135 p = reserve_space(xdr, 8);
1136 *p++ = cpu_to_be32(create->u.device.specdata1);
1137 *p = cpu_to_be32(create->u.device.specdata2);
1138 break;
1139
1140 default:
1141 break;
1142 }
1143
1144 encode_string(xdr, create->name->len, create->name->name);
1145 encode_attrs(xdr, create->attrs, create->server);
1146 }
1147
1148 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1149 {
1150 __be32 *p;
1151
1152 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1153 p = reserve_space(xdr, 8);
1154 *p++ = cpu_to_be32(1);
1155 *p = cpu_to_be32(bitmap);
1156 }
1157
1158 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1159 {
1160 __be32 *p;
1161
1162 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1163 p = reserve_space(xdr, 12);
1164 *p++ = cpu_to_be32(2);
1165 *p++ = cpu_to_be32(bm0);
1166 *p = cpu_to_be32(bm1);
1167 }
1168
1169 static void
1170 encode_getattr_three(struct xdr_stream *xdr,
1171 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1172 struct compound_hdr *hdr)
1173 {
1174 __be32 *p;
1175
1176 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1177 if (bm2) {
1178 p = reserve_space(xdr, 16);
1179 *p++ = cpu_to_be32(3);
1180 *p++ = cpu_to_be32(bm0);
1181 *p++ = cpu_to_be32(bm1);
1182 *p = cpu_to_be32(bm2);
1183 } else if (bm1) {
1184 p = reserve_space(xdr, 12);
1185 *p++ = cpu_to_be32(2);
1186 *p++ = cpu_to_be32(bm0);
1187 *p = cpu_to_be32(bm1);
1188 } else {
1189 p = reserve_space(xdr, 8);
1190 *p++ = cpu_to_be32(1);
1191 *p = cpu_to_be32(bm0);
1192 }
1193 }
1194
1195 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1196 {
1197 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1198 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1199 }
1200
1201 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1202 const u32 *open_bitmap,
1203 struct compound_hdr *hdr)
1204 {
1205 encode_getattr_three(xdr,
1206 bitmask[0] & open_bitmap[0],
1207 bitmask[1] & open_bitmap[1],
1208 bitmask[2] & open_bitmap[2],
1209 hdr);
1210 }
1211
1212 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1213 {
1214 encode_getattr_three(xdr,
1215 bitmask[0] & nfs4_fsinfo_bitmap[0],
1216 bitmask[1] & nfs4_fsinfo_bitmap[1],
1217 bitmask[2] & nfs4_fsinfo_bitmap[2],
1218 hdr);
1219 }
1220
1221 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1222 {
1223 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1224 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1225 }
1226
1227 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1228 {
1229 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1230 }
1231
1232 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1233 {
1234 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1235 encode_string(xdr, name->len, name->name);
1236 }
1237
1238 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1239 {
1240 if (fl->fl_type == F_RDLCK)
1241 return block ? NFS4_READW_LT : NFS4_READ_LT;
1242 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1243 }
1244
1245 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1246 {
1247 if (fl->fl_end == OFFSET_MAX)
1248 return ~(uint64_t)0;
1249 return fl->fl_end - fl->fl_start + 1;
1250 }
1251
1252 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1253 {
1254 __be32 *p;
1255
1256 p = reserve_space(xdr, 32);
1257 p = xdr_encode_hyper(p, lowner->clientid);
1258 *p++ = cpu_to_be32(20);
1259 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1260 *p++ = cpu_to_be32(lowner->s_dev);
1261 xdr_encode_hyper(p, lowner->id);
1262 }
1263
1264 /*
1265 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1266 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1267 */
1268 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1269 {
1270 __be32 *p;
1271
1272 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1273 p = reserve_space(xdr, 28);
1274 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1275 *p++ = cpu_to_be32(args->reclaim);
1276 p = xdr_encode_hyper(p, args->fl->fl_start);
1277 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1278 *p = cpu_to_be32(args->new_lock_owner);
1279 if (args->new_lock_owner){
1280 encode_nfs4_seqid(xdr, args->open_seqid);
1281 encode_nfs4_stateid(xdr, args->open_stateid);
1282 encode_nfs4_seqid(xdr, args->lock_seqid);
1283 encode_lockowner(xdr, &args->lock_owner);
1284 }
1285 else {
1286 encode_nfs4_stateid(xdr, args->lock_stateid);
1287 encode_nfs4_seqid(xdr, args->lock_seqid);
1288 }
1289 }
1290
1291 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1292 {
1293 __be32 *p;
1294
1295 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1296 p = reserve_space(xdr, 20);
1297 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1298 p = xdr_encode_hyper(p, args->fl->fl_start);
1299 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1300 encode_lockowner(xdr, &args->lock_owner);
1301 }
1302
1303 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1304 {
1305 __be32 *p;
1306
1307 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1308 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1309 encode_nfs4_seqid(xdr, args->seqid);
1310 encode_nfs4_stateid(xdr, args->stateid);
1311 p = reserve_space(xdr, 16);
1312 p = xdr_encode_hyper(p, args->fl->fl_start);
1313 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1314 }
1315
1316 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1317 {
1318 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1319 encode_lockowner(xdr, lowner);
1320 }
1321
1322 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1323 {
1324 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1325 encode_string(xdr, name->len, name->name);
1326 }
1327
1328 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1329 {
1330 __be32 *p;
1331
1332 p = reserve_space(xdr, 8);
1333 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1334 case FMODE_READ:
1335 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1336 break;
1337 case FMODE_WRITE:
1338 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1339 break;
1340 case FMODE_READ|FMODE_WRITE:
1341 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1342 break;
1343 default:
1344 *p++ = cpu_to_be32(0);
1345 }
1346 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1347 }
1348
1349 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1350 {
1351 __be32 *p;
1352 /*
1353 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1354 * owner 4 = 32
1355 */
1356 encode_nfs4_seqid(xdr, arg->seqid);
1357 encode_share_access(xdr, arg->fmode);
1358 p = reserve_space(xdr, 36);
1359 p = xdr_encode_hyper(p, arg->clientid);
1360 *p++ = cpu_to_be32(24);
1361 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1362 *p++ = cpu_to_be32(arg->server->s_dev);
1363 *p++ = cpu_to_be32(arg->id.uniquifier);
1364 xdr_encode_hyper(p, arg->id.create_time);
1365 }
1366
1367 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1368 {
1369 __be32 *p;
1370 struct nfs_client *clp;
1371
1372 p = reserve_space(xdr, 4);
1373 switch(arg->open_flags & O_EXCL) {
1374 case 0:
1375 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1376 encode_attrs(xdr, arg->u.attrs, arg->server);
1377 break;
1378 default:
1379 clp = arg->server->nfs_client;
1380 if (clp->cl_mvops->minor_version > 0) {
1381 if (nfs4_has_persistent_session(clp)) {
1382 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1383 encode_attrs(xdr, arg->u.attrs, arg->server);
1384 } else {
1385 struct iattr dummy;
1386
1387 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1388 encode_nfs4_verifier(xdr, &arg->u.verifier);
1389 dummy.ia_valid = 0;
1390 encode_attrs(xdr, &dummy, arg->server);
1391 }
1392 } else {
1393 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1394 encode_nfs4_verifier(xdr, &arg->u.verifier);
1395 }
1396 }
1397 }
1398
1399 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1400 {
1401 __be32 *p;
1402
1403 p = reserve_space(xdr, 4);
1404 switch (arg->open_flags & O_CREAT) {
1405 case 0:
1406 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1407 break;
1408 default:
1409 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1410 encode_createmode(xdr, arg);
1411 }
1412 }
1413
1414 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1415 {
1416 __be32 *p;
1417
1418 p = reserve_space(xdr, 4);
1419 switch (delegation_type) {
1420 case 0:
1421 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1422 break;
1423 case FMODE_READ:
1424 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1425 break;
1426 case FMODE_WRITE|FMODE_READ:
1427 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1428 break;
1429 default:
1430 BUG();
1431 }
1432 }
1433
1434 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1435 {
1436 __be32 *p;
1437
1438 p = reserve_space(xdr, 4);
1439 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1440 encode_string(xdr, name->len, name->name);
1441 }
1442
1443 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1444 {
1445 __be32 *p;
1446
1447 p = reserve_space(xdr, 4);
1448 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1449 encode_delegation_type(xdr, type);
1450 }
1451
1452 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1453 {
1454 __be32 *p;
1455
1456 p = reserve_space(xdr, 4);
1457 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1458 encode_nfs4_stateid(xdr, stateid);
1459 encode_string(xdr, name->len, name->name);
1460 }
1461
1462 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1463 {
1464 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1465 encode_openhdr(xdr, arg);
1466 encode_opentype(xdr, arg);
1467 switch (arg->claim) {
1468 case NFS4_OPEN_CLAIM_NULL:
1469 encode_claim_null(xdr, arg->name);
1470 break;
1471 case NFS4_OPEN_CLAIM_PREVIOUS:
1472 encode_claim_previous(xdr, arg->u.delegation_type);
1473 break;
1474 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1475 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1476 break;
1477 default:
1478 BUG();
1479 }
1480 }
1481
1482 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1483 {
1484 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1485 encode_nfs4_stateid(xdr, arg->stateid);
1486 encode_nfs4_seqid(xdr, arg->seqid);
1487 }
1488
1489 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1490 {
1491 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1492 encode_nfs4_stateid(xdr, arg->stateid);
1493 encode_nfs4_seqid(xdr, arg->seqid);
1494 encode_share_access(xdr, arg->fmode);
1495 }
1496
1497 static void
1498 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1499 {
1500 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1501 encode_string(xdr, fh->size, fh->data);
1502 }
1503
1504 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1505 {
1506 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1507 }
1508
1509 static void encode_open_stateid(struct xdr_stream *xdr,
1510 const struct nfs_open_context *ctx,
1511 const struct nfs_lock_context *l_ctx,
1512 fmode_t fmode,
1513 int zero_seqid)
1514 {
1515 nfs4_stateid stateid;
1516
1517 if (ctx->state != NULL) {
1518 const struct nfs_lockowner *lockowner = NULL;
1519
1520 if (l_ctx != NULL)
1521 lockowner = &l_ctx->lockowner;
1522 nfs4_select_rw_stateid(&stateid, ctx->state,
1523 fmode, lockowner);
1524 if (zero_seqid)
1525 stateid.seqid = 0;
1526 encode_nfs4_stateid(xdr, &stateid);
1527 } else
1528 encode_nfs4_stateid(xdr, &zero_stateid);
1529 }
1530
1531 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1532 {
1533 __be32 *p;
1534
1535 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1536 encode_open_stateid(xdr, args->context, args->lock_context,
1537 FMODE_READ, hdr->minorversion);
1538
1539 p = reserve_space(xdr, 12);
1540 p = xdr_encode_hyper(p, args->offset);
1541 *p = cpu_to_be32(args->count);
1542 }
1543
1544 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1545 {
1546 uint32_t attrs[2] = {
1547 FATTR4_WORD0_RDATTR_ERROR,
1548 FATTR4_WORD1_MOUNTED_ON_FILEID,
1549 };
1550 uint32_t dircount = readdir->count >> 1;
1551 __be32 *p, verf[2];
1552
1553 if (readdir->plus) {
1554 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1555 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1556 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1557 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1558 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1559 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1560 dircount >>= 1;
1561 }
1562 /* Use mounted_on_fileid only if the server supports it */
1563 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1564 attrs[0] |= FATTR4_WORD0_FILEID;
1565
1566 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1567 encode_uint64(xdr, readdir->cookie);
1568 encode_nfs4_verifier(xdr, &readdir->verifier);
1569 p = reserve_space(xdr, 20);
1570 *p++ = cpu_to_be32(dircount);
1571 *p++ = cpu_to_be32(readdir->count);
1572 *p++ = cpu_to_be32(2);
1573
1574 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1575 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1576 memcpy(verf, readdir->verifier.data, sizeof(verf));
1577 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1578 __func__,
1579 (unsigned long long)readdir->cookie,
1580 verf[0], verf[1],
1581 attrs[0] & readdir->bitmask[0],
1582 attrs[1] & readdir->bitmask[1]);
1583 }
1584
1585 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1586 {
1587 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1588 }
1589
1590 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1591 {
1592 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1593 encode_string(xdr, name->len, name->name);
1594 }
1595
1596 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1597 {
1598 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1599 encode_string(xdr, oldname->len, oldname->name);
1600 encode_string(xdr, newname->len, newname->name);
1601 }
1602
1603 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1604 struct compound_hdr *hdr)
1605 {
1606 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1607 encode_uint64(xdr, clid);
1608 }
1609
1610 static void
1611 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1612 {
1613 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1614 }
1615
1616 static void
1617 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1618 {
1619 __be32 *p;
1620
1621 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1622 encode_nfs4_stateid(xdr, &zero_stateid);
1623 p = reserve_space(xdr, 2*4);
1624 *p++ = cpu_to_be32(1);
1625 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1626 p = reserve_space(xdr, 4);
1627 *p = cpu_to_be32(arg->acl_len);
1628 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1629 }
1630
1631 static void
1632 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1633 {
1634 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1635 }
1636
1637 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1638 {
1639 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1640 encode_nfs4_stateid(xdr, &arg->stateid);
1641 encode_attrs(xdr, arg->iap, server);
1642 }
1643
1644 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1645 {
1646 __be32 *p;
1647
1648 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1649 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1650
1651 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1652 p = reserve_space(xdr, 4);
1653 *p = cpu_to_be32(setclientid->sc_prog);
1654 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1655 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1656 p = reserve_space(xdr, 4);
1657 *p = cpu_to_be32(setclientid->sc_cb_ident);
1658 }
1659
1660 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1661 {
1662 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1663 decode_setclientid_confirm_maxsz, hdr);
1664 encode_uint64(xdr, arg->clientid);
1665 encode_nfs4_verifier(xdr, &arg->confirm);
1666 }
1667
1668 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1669 {
1670 __be32 *p;
1671
1672 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1673 encode_open_stateid(xdr, args->context, args->lock_context,
1674 FMODE_WRITE, hdr->minorversion);
1675
1676 p = reserve_space(xdr, 16);
1677 p = xdr_encode_hyper(p, args->offset);
1678 *p++ = cpu_to_be32(args->stable);
1679 *p = cpu_to_be32(args->count);
1680
1681 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1682 }
1683
1684 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1685 {
1686 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1687 encode_nfs4_stateid(xdr, stateid);
1688 }
1689
1690 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1691 {
1692 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1693 encode_string(xdr, name->len, name->name);
1694 }
1695
1696 #if defined(CONFIG_NFS_V4_1)
1697 /* NFSv4.1 operations */
1698 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1699 struct nfs4_session *session,
1700 struct compound_hdr *hdr)
1701 {
1702 __be32 *p;
1703
1704 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1705 decode_bind_conn_to_session_maxsz, hdr);
1706 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1707 p = xdr_reserve_space(xdr, 8);
1708 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1709 *p = 0; /* use_conn_in_rdma_mode = False */
1710 }
1711
1712 static void encode_exchange_id(struct xdr_stream *xdr,
1713 struct nfs41_exchange_id_args *args,
1714 struct compound_hdr *hdr)
1715 {
1716 __be32 *p;
1717 char impl_name[IMPL_NAME_LIMIT];
1718 int len = 0;
1719
1720 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1721 encode_nfs4_verifier(xdr, args->verifier);
1722
1723 encode_string(xdr, args->id_len, args->id);
1724
1725 p = reserve_space(xdr, 12);
1726 *p++ = cpu_to_be32(args->flags);
1727 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1728
1729 if (send_implementation_id &&
1730 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1731 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1732 <= sizeof(impl_name) + 1)
1733 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1734 utsname()->sysname, utsname()->release,
1735 utsname()->version, utsname()->machine);
1736
1737 if (len > 0) {
1738 *p = cpu_to_be32(1); /* implementation id array length=1 */
1739
1740 encode_string(xdr,
1741 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1742 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1743 encode_string(xdr, len, impl_name);
1744 /* just send zeros for nii_date - the date is in nii_name */
1745 p = reserve_space(xdr, 12);
1746 p = xdr_encode_hyper(p, 0);
1747 *p = cpu_to_be32(0);
1748 } else
1749 *p = cpu_to_be32(0); /* implementation id array length=0 */
1750 }
1751
1752 static void encode_create_session(struct xdr_stream *xdr,
1753 struct nfs41_create_session_args *args,
1754 struct compound_hdr *hdr)
1755 {
1756 __be32 *p;
1757 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1758 uint32_t len;
1759 struct nfs_client *clp = args->client;
1760 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1761 u32 max_resp_sz_cached;
1762
1763 /*
1764 * Assumes OPEN is the biggest non-idempotent compound.
1765 * 2 is the verifier.
1766 */
1767 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1768 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1769
1770 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1771 clp->cl_ipaddr);
1772
1773 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1774 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1775 p = xdr_encode_hyper(p, clp->cl_clientid);
1776 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1777 *p++ = cpu_to_be32(args->flags); /*flags */
1778
1779 /* Fore Channel */
1780 *p++ = cpu_to_be32(0); /* header padding size */
1781 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1782 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1783 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1784 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1785 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1786 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1787
1788 /* Back Channel */
1789 *p++ = cpu_to_be32(0); /* header padding size */
1790 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1791 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1792 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1793 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1794 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1795 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1796
1797 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1798 *p++ = cpu_to_be32(1);
1799 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1800
1801 /* authsys_parms rfc1831 */
1802 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1803 p = xdr_encode_opaque(p, machine_name, len);
1804 *p++ = cpu_to_be32(0); /* UID */
1805 *p++ = cpu_to_be32(0); /* GID */
1806 *p = cpu_to_be32(0); /* No more gids */
1807 }
1808
1809 static void encode_destroy_session(struct xdr_stream *xdr,
1810 struct nfs4_session *session,
1811 struct compound_hdr *hdr)
1812 {
1813 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1814 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1815 }
1816
1817 static void encode_destroy_clientid(struct xdr_stream *xdr,
1818 uint64_t clientid,
1819 struct compound_hdr *hdr)
1820 {
1821 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1822 encode_uint64(xdr, clientid);
1823 }
1824
1825 static void encode_reclaim_complete(struct xdr_stream *xdr,
1826 struct nfs41_reclaim_complete_args *args,
1827 struct compound_hdr *hdr)
1828 {
1829 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1830 encode_uint32(xdr, args->one_fs);
1831 }
1832 #endif /* CONFIG_NFS_V4_1 */
1833
1834 static void encode_sequence(struct xdr_stream *xdr,
1835 const struct nfs4_sequence_args *args,
1836 struct compound_hdr *hdr)
1837 {
1838 #if defined(CONFIG_NFS_V4_1)
1839 struct nfs4_session *session;
1840 struct nfs4_slot_table *tp;
1841 struct nfs4_slot *slot = args->sa_slot;
1842 __be32 *p;
1843
1844 if (slot == NULL)
1845 return;
1846
1847 tp = slot->table;
1848 session = tp->session;
1849
1850 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1851
1852 /*
1853 * Sessionid + seqid + slotid + max slotid + cache_this
1854 */
1855 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1856 "max_slotid=%d cache_this=%d\n",
1857 __func__,
1858 ((u32 *)session->sess_id.data)[0],
1859 ((u32 *)session->sess_id.data)[1],
1860 ((u32 *)session->sess_id.data)[2],
1861 ((u32 *)session->sess_id.data)[3],
1862 slot->seq_nr, slot->slot_nr,
1863 tp->highest_used_slotid, args->sa_cache_this);
1864 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1865 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1866 *p++ = cpu_to_be32(slot->seq_nr);
1867 *p++ = cpu_to_be32(slot->slot_nr);
1868 *p++ = cpu_to_be32(tp->highest_used_slotid);
1869 *p = cpu_to_be32(args->sa_cache_this);
1870 #endif /* CONFIG_NFS_V4_1 */
1871 }
1872
1873 #ifdef CONFIG_NFS_V4_1
1874 static void
1875 encode_getdevicelist(struct xdr_stream *xdr,
1876 const struct nfs4_getdevicelist_args *args,
1877 struct compound_hdr *hdr)
1878 {
1879 __be32 *p;
1880 nfs4_verifier dummy = {
1881 .data = "dummmmmy",
1882 };
1883
1884 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1885 p = reserve_space(xdr, 16);
1886 *p++ = cpu_to_be32(args->layoutclass);
1887 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1888 xdr_encode_hyper(p, 0ULL); /* cookie */
1889 encode_nfs4_verifier(xdr, &dummy);
1890 }
1891
1892 static void
1893 encode_getdeviceinfo(struct xdr_stream *xdr,
1894 const struct nfs4_getdeviceinfo_args *args,
1895 struct compound_hdr *hdr)
1896 {
1897 __be32 *p;
1898
1899 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1900 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1901 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1902 NFS4_DEVICEID4_SIZE);
1903 *p++ = cpu_to_be32(args->pdev->layout_type);
1904 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1905 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1906 }
1907
1908 static void
1909 encode_layoutget(struct xdr_stream *xdr,
1910 const struct nfs4_layoutget_args *args,
1911 struct compound_hdr *hdr)
1912 {
1913 __be32 *p;
1914
1915 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1916 p = reserve_space(xdr, 36);
1917 *p++ = cpu_to_be32(0); /* Signal layout available */
1918 *p++ = cpu_to_be32(args->type);
1919 *p++ = cpu_to_be32(args->range.iomode);
1920 p = xdr_encode_hyper(p, args->range.offset);
1921 p = xdr_encode_hyper(p, args->range.length);
1922 p = xdr_encode_hyper(p, args->minlength);
1923 encode_nfs4_stateid(xdr, &args->stateid);
1924 encode_uint32(xdr, args->maxcount);
1925
1926 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1927 __func__,
1928 args->type,
1929 args->range.iomode,
1930 (unsigned long)args->range.offset,
1931 (unsigned long)args->range.length,
1932 args->maxcount);
1933 }
1934
1935 static int
1936 encode_layoutcommit(struct xdr_stream *xdr,
1937 struct inode *inode,
1938 const struct nfs4_layoutcommit_args *args,
1939 struct compound_hdr *hdr)
1940 {
1941 __be32 *p;
1942
1943 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1944 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1945
1946 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1947 p = reserve_space(xdr, 20);
1948 /* Only whole file layouts */
1949 p = xdr_encode_hyper(p, 0); /* offset */
1950 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1951 *p = cpu_to_be32(0); /* reclaim */
1952 encode_nfs4_stateid(xdr, &args->stateid);
1953 p = reserve_space(xdr, 20);
1954 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1955 p = xdr_encode_hyper(p, args->lastbytewritten);
1956 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1957 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1958
1959 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1960 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1961 NFS_I(inode)->layout, xdr, args);
1962 else
1963 encode_uint32(xdr, 0); /* no layout-type payload */
1964
1965 return 0;
1966 }
1967
1968 static void
1969 encode_layoutreturn(struct xdr_stream *xdr,
1970 const struct nfs4_layoutreturn_args *args,
1971 struct compound_hdr *hdr)
1972 {
1973 __be32 *p;
1974
1975 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1976 p = reserve_space(xdr, 16);
1977 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1978 *p++ = cpu_to_be32(args->layout_type);
1979 *p++ = cpu_to_be32(IOMODE_ANY);
1980 *p = cpu_to_be32(RETURN_FILE);
1981 p = reserve_space(xdr, 16);
1982 p = xdr_encode_hyper(p, 0);
1983 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1984 spin_lock(&args->inode->i_lock);
1985 encode_nfs4_stateid(xdr, &args->stateid);
1986 spin_unlock(&args->inode->i_lock);
1987 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1988 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1989 NFS_I(args->inode)->layout, xdr, args);
1990 } else
1991 encode_uint32(xdr, 0);
1992 }
1993
1994 static int
1995 encode_secinfo_no_name(struct xdr_stream *xdr,
1996 const struct nfs41_secinfo_no_name_args *args,
1997 struct compound_hdr *hdr)
1998 {
1999 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2000 encode_uint32(xdr, args->style);
2001 return 0;
2002 }
2003
2004 static void encode_test_stateid(struct xdr_stream *xdr,
2005 struct nfs41_test_stateid_args *args,
2006 struct compound_hdr *hdr)
2007 {
2008 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2009 encode_uint32(xdr, 1);
2010 encode_nfs4_stateid(xdr, args->stateid);
2011 }
2012
2013 static void encode_free_stateid(struct xdr_stream *xdr,
2014 struct nfs41_free_stateid_args *args,
2015 struct compound_hdr *hdr)
2016 {
2017 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2018 encode_nfs4_stateid(xdr, args->stateid);
2019 }
2020 #endif /* CONFIG_NFS_V4_1 */
2021
2022 /*
2023 * END OF "GENERIC" ENCODE ROUTINES.
2024 */
2025
2026 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2027 {
2028 #if defined(CONFIG_NFS_V4_1)
2029
2030 if (args->sa_slot)
2031 return args->sa_slot->table->session->clp->cl_mvops->minor_version;
2032 #endif /* CONFIG_NFS_V4_1 */
2033 return 0;
2034 }
2035
2036 /*
2037 * Encode an ACCESS request
2038 */
2039 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2040 const struct nfs4_accessargs *args)
2041 {
2042 struct compound_hdr hdr = {
2043 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2044 };
2045
2046 encode_compound_hdr(xdr, req, &hdr);
2047 encode_sequence(xdr, &args->seq_args, &hdr);
2048 encode_putfh(xdr, args->fh, &hdr);
2049 encode_access(xdr, args->access, &hdr);
2050 encode_getfattr(xdr, args->bitmask, &hdr);
2051 encode_nops(&hdr);
2052 }
2053
2054 /*
2055 * Encode LOOKUP request
2056 */
2057 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2058 const struct nfs4_lookup_arg *args)
2059 {
2060 struct compound_hdr hdr = {
2061 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2062 };
2063
2064 encode_compound_hdr(xdr, req, &hdr);
2065 encode_sequence(xdr, &args->seq_args, &hdr);
2066 encode_putfh(xdr, args->dir_fh, &hdr);
2067 encode_lookup(xdr, args->name, &hdr);
2068 encode_getfh(xdr, &hdr);
2069 encode_getfattr(xdr, args->bitmask, &hdr);
2070 encode_nops(&hdr);
2071 }
2072
2073 /*
2074 * Encode LOOKUP_ROOT request
2075 */
2076 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2077 struct xdr_stream *xdr,
2078 const struct nfs4_lookup_root_arg *args)
2079 {
2080 struct compound_hdr hdr = {
2081 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2082 };
2083
2084 encode_compound_hdr(xdr, req, &hdr);
2085 encode_sequence(xdr, &args->seq_args, &hdr);
2086 encode_putrootfh(xdr, &hdr);
2087 encode_getfh(xdr, &hdr);
2088 encode_getfattr(xdr, args->bitmask, &hdr);
2089 encode_nops(&hdr);
2090 }
2091
2092 /*
2093 * Encode REMOVE request
2094 */
2095 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2096 const struct nfs_removeargs *args)
2097 {
2098 struct compound_hdr hdr = {
2099 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2100 };
2101
2102 encode_compound_hdr(xdr, req, &hdr);
2103 encode_sequence(xdr, &args->seq_args, &hdr);
2104 encode_putfh(xdr, args->fh, &hdr);
2105 encode_remove(xdr, &args->name, &hdr);
2106 encode_nops(&hdr);
2107 }
2108
2109 /*
2110 * Encode RENAME request
2111 */
2112 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2113 const struct nfs_renameargs *args)
2114 {
2115 struct compound_hdr hdr = {
2116 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2117 };
2118
2119 encode_compound_hdr(xdr, req, &hdr);
2120 encode_sequence(xdr, &args->seq_args, &hdr);
2121 encode_putfh(xdr, args->old_dir, &hdr);
2122 encode_savefh(xdr, &hdr);
2123 encode_putfh(xdr, args->new_dir, &hdr);
2124 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2125 encode_nops(&hdr);
2126 }
2127
2128 /*
2129 * Encode LINK request
2130 */
2131 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2132 const struct nfs4_link_arg *args)
2133 {
2134 struct compound_hdr hdr = {
2135 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2136 };
2137
2138 encode_compound_hdr(xdr, req, &hdr);
2139 encode_sequence(xdr, &args->seq_args, &hdr);
2140 encode_putfh(xdr, args->fh, &hdr);
2141 encode_savefh(xdr, &hdr);
2142 encode_putfh(xdr, args->dir_fh, &hdr);
2143 encode_link(xdr, args->name, &hdr);
2144 encode_restorefh(xdr, &hdr);
2145 encode_getfattr(xdr, args->bitmask, &hdr);
2146 encode_nops(&hdr);
2147 }
2148
2149 /*
2150 * Encode CREATE request
2151 */
2152 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2153 const struct nfs4_create_arg *args)
2154 {
2155 struct compound_hdr hdr = {
2156 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2157 };
2158
2159 encode_compound_hdr(xdr, req, &hdr);
2160 encode_sequence(xdr, &args->seq_args, &hdr);
2161 encode_putfh(xdr, args->dir_fh, &hdr);
2162 encode_create(xdr, args, &hdr);
2163 encode_getfh(xdr, &hdr);
2164 encode_getfattr(xdr, args->bitmask, &hdr);
2165 encode_nops(&hdr);
2166 }
2167
2168 /*
2169 * Encode SYMLINK request
2170 */
2171 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2172 const struct nfs4_create_arg *args)
2173 {
2174 nfs4_xdr_enc_create(req, xdr, args);
2175 }
2176
2177 /*
2178 * Encode GETATTR request
2179 */
2180 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2181 const struct nfs4_getattr_arg *args)
2182 {
2183 struct compound_hdr hdr = {
2184 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2185 };
2186
2187 encode_compound_hdr(xdr, req, &hdr);
2188 encode_sequence(xdr, &args->seq_args, &hdr);
2189 encode_putfh(xdr, args->fh, &hdr);
2190 encode_getfattr(xdr, args->bitmask, &hdr);
2191 encode_nops(&hdr);
2192 }
2193
2194 /*
2195 * Encode a CLOSE request
2196 */
2197 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2198 struct nfs_closeargs *args)
2199 {
2200 struct compound_hdr hdr = {
2201 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2202 };
2203
2204 encode_compound_hdr(xdr, req, &hdr);
2205 encode_sequence(xdr, &args->seq_args, &hdr);
2206 encode_putfh(xdr, args->fh, &hdr);
2207 encode_close(xdr, args, &hdr);
2208 encode_getfattr(xdr, args->bitmask, &hdr);
2209 encode_nops(&hdr);
2210 }
2211
2212 /*
2213 * Encode an OPEN request
2214 */
2215 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2216 struct nfs_openargs *args)
2217 {
2218 struct compound_hdr hdr = {
2219 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2220 };
2221
2222 encode_compound_hdr(xdr, req, &hdr);
2223 encode_sequence(xdr, &args->seq_args, &hdr);
2224 encode_putfh(xdr, args->fh, &hdr);
2225 encode_open(xdr, args, &hdr);
2226 encode_getfh(xdr, &hdr);
2227 if (args->access)
2228 encode_access(xdr, args->access, &hdr);
2229 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2230 encode_nops(&hdr);
2231 }
2232
2233 /*
2234 * Encode an OPEN_CONFIRM request
2235 */
2236 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2237 struct xdr_stream *xdr,
2238 struct nfs_open_confirmargs *args)
2239 {
2240 struct compound_hdr hdr = {
2241 .nops = 0,
2242 };
2243
2244 encode_compound_hdr(xdr, req, &hdr);
2245 encode_putfh(xdr, args->fh, &hdr);
2246 encode_open_confirm(xdr, args, &hdr);
2247 encode_nops(&hdr);
2248 }
2249
2250 /*
2251 * Encode an OPEN request with no attributes.
2252 */
2253 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2254 struct xdr_stream *xdr,
2255 struct nfs_openargs *args)
2256 {
2257 struct compound_hdr hdr = {
2258 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2259 };
2260
2261 encode_compound_hdr(xdr, req, &hdr);
2262 encode_sequence(xdr, &args->seq_args, &hdr);
2263 encode_putfh(xdr, args->fh, &hdr);
2264 encode_open(xdr, args, &hdr);
2265 if (args->access)
2266 encode_access(xdr, args->access, &hdr);
2267 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2268 encode_nops(&hdr);
2269 }
2270
2271 /*
2272 * Encode an OPEN_DOWNGRADE request
2273 */
2274 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2275 struct xdr_stream *xdr,
2276 struct nfs_closeargs *args)
2277 {
2278 struct compound_hdr hdr = {
2279 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2280 };
2281
2282 encode_compound_hdr(xdr, req, &hdr);
2283 encode_sequence(xdr, &args->seq_args, &hdr);
2284 encode_putfh(xdr, args->fh, &hdr);
2285 encode_open_downgrade(xdr, args, &hdr);
2286 encode_getfattr(xdr, args->bitmask, &hdr);
2287 encode_nops(&hdr);
2288 }
2289
2290 /*
2291 * Encode a LOCK request
2292 */
2293 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2294 struct nfs_lock_args *args)
2295 {
2296 struct compound_hdr hdr = {
2297 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2298 };
2299
2300 encode_compound_hdr(xdr, req, &hdr);
2301 encode_sequence(xdr, &args->seq_args, &hdr);
2302 encode_putfh(xdr, args->fh, &hdr);
2303 encode_lock(xdr, args, &hdr);
2304 encode_nops(&hdr);
2305 }
2306
2307 /*
2308 * Encode a LOCKT request
2309 */
2310 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2311 struct nfs_lockt_args *args)
2312 {
2313 struct compound_hdr hdr = {
2314 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2315 };
2316
2317 encode_compound_hdr(xdr, req, &hdr);
2318 encode_sequence(xdr, &args->seq_args, &hdr);
2319 encode_putfh(xdr, args->fh, &hdr);
2320 encode_lockt(xdr, args, &hdr);
2321 encode_nops(&hdr);
2322 }
2323
2324 /*
2325 * Encode a LOCKU request
2326 */
2327 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2328 struct nfs_locku_args *args)
2329 {
2330 struct compound_hdr hdr = {
2331 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2332 };
2333
2334 encode_compound_hdr(xdr, req, &hdr);
2335 encode_sequence(xdr, &args->seq_args, &hdr);
2336 encode_putfh(xdr, args->fh, &hdr);
2337 encode_locku(xdr, args, &hdr);
2338 encode_nops(&hdr);
2339 }
2340
2341 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2342 struct xdr_stream *xdr,
2343 struct nfs_release_lockowner_args *args)
2344 {
2345 struct compound_hdr hdr = {
2346 .minorversion = 0,
2347 };
2348
2349 encode_compound_hdr(xdr, req, &hdr);
2350 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2351 encode_nops(&hdr);
2352 }
2353
2354 /*
2355 * Encode a READLINK request
2356 */
2357 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2358 const struct nfs4_readlink *args)
2359 {
2360 struct compound_hdr hdr = {
2361 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2362 };
2363
2364 encode_compound_hdr(xdr, req, &hdr);
2365 encode_sequence(xdr, &args->seq_args, &hdr);
2366 encode_putfh(xdr, args->fh, &hdr);
2367 encode_readlink(xdr, args, req, &hdr);
2368
2369 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2370 args->pgbase, args->pglen);
2371 encode_nops(&hdr);
2372 }
2373
2374 /*
2375 * Encode a READDIR request
2376 */
2377 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2378 const struct nfs4_readdir_arg *args)
2379 {
2380 struct compound_hdr hdr = {
2381 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2382 };
2383
2384 encode_compound_hdr(xdr, req, &hdr);
2385 encode_sequence(xdr, &args->seq_args, &hdr);
2386 encode_putfh(xdr, args->fh, &hdr);
2387 encode_readdir(xdr, args, req, &hdr);
2388
2389 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2390 args->pgbase, args->count);
2391 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2392 __func__, hdr.replen << 2, args->pages,
2393 args->pgbase, args->count);
2394 encode_nops(&hdr);
2395 }
2396
2397 /*
2398 * Encode a READ request
2399 */
2400 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2401 struct nfs_readargs *args)
2402 {
2403 struct compound_hdr hdr = {
2404 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2405 };
2406
2407 encode_compound_hdr(xdr, req, &hdr);
2408 encode_sequence(xdr, &args->seq_args, &hdr);
2409 encode_putfh(xdr, args->fh, &hdr);
2410 encode_read(xdr, args, &hdr);
2411
2412 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2413 args->pages, args->pgbase, args->count);
2414 req->rq_rcv_buf.flags |= XDRBUF_READ;
2415 encode_nops(&hdr);
2416 }
2417
2418 /*
2419 * Encode an SETATTR request
2420 */
2421 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2422 struct nfs_setattrargs *args)
2423 {
2424 struct compound_hdr hdr = {
2425 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2426 };
2427
2428 encode_compound_hdr(xdr, req, &hdr);
2429 encode_sequence(xdr, &args->seq_args, &hdr);
2430 encode_putfh(xdr, args->fh, &hdr);
2431 encode_setattr(xdr, args, args->server, &hdr);
2432 encode_getfattr(xdr, args->bitmask, &hdr);
2433 encode_nops(&hdr);
2434 }
2435
2436 /*
2437 * Encode a GETACL request
2438 */
2439 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2440 struct nfs_getaclargs *args)
2441 {
2442 struct compound_hdr hdr = {
2443 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2444 };
2445 uint32_t replen;
2446
2447 encode_compound_hdr(xdr, req, &hdr);
2448 encode_sequence(xdr, &args->seq_args, &hdr);
2449 encode_putfh(xdr, args->fh, &hdr);
2450 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2451 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2452
2453 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2454 args->acl_pages, args->acl_pgbase, args->acl_len);
2455
2456 encode_nops(&hdr);
2457 }
2458
2459 /*
2460 * Encode a WRITE request
2461 */
2462 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2463 struct nfs_writeargs *args)
2464 {
2465 struct compound_hdr hdr = {
2466 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2467 };
2468
2469 encode_compound_hdr(xdr, req, &hdr);
2470 encode_sequence(xdr, &args->seq_args, &hdr);
2471 encode_putfh(xdr, args->fh, &hdr);
2472 encode_write(xdr, args, &hdr);
2473 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2474 if (args->bitmask)
2475 encode_getfattr(xdr, args->bitmask, &hdr);
2476 encode_nops(&hdr);
2477 }
2478
2479 /*
2480 * a COMMIT request
2481 */
2482 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2483 struct nfs_commitargs *args)
2484 {
2485 struct compound_hdr hdr = {
2486 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2487 };
2488
2489 encode_compound_hdr(xdr, req, &hdr);
2490 encode_sequence(xdr, &args->seq_args, &hdr);
2491 encode_putfh(xdr, args->fh, &hdr);
2492 encode_commit(xdr, args, &hdr);
2493 encode_nops(&hdr);
2494 }
2495
2496 /*
2497 * FSINFO request
2498 */
2499 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2500 struct nfs4_fsinfo_arg *args)
2501 {
2502 struct compound_hdr hdr = {
2503 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2504 };
2505
2506 encode_compound_hdr(xdr, req, &hdr);
2507 encode_sequence(xdr, &args->seq_args, &hdr);
2508 encode_putfh(xdr, args->fh, &hdr);
2509 encode_fsinfo(xdr, args->bitmask, &hdr);
2510 encode_nops(&hdr);
2511 }
2512
2513 /*
2514 * a PATHCONF request
2515 */
2516 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2517 const struct nfs4_pathconf_arg *args)
2518 {
2519 struct compound_hdr hdr = {
2520 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2521 };
2522
2523 encode_compound_hdr(xdr, req, &hdr);
2524 encode_sequence(xdr, &args->seq_args, &hdr);
2525 encode_putfh(xdr, args->fh, &hdr);
2526 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2527 &hdr);
2528 encode_nops(&hdr);
2529 }
2530
2531 /*
2532 * a STATFS request
2533 */
2534 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2535 const struct nfs4_statfs_arg *args)
2536 {
2537 struct compound_hdr hdr = {
2538 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2539 };
2540
2541 encode_compound_hdr(xdr, req, &hdr);
2542 encode_sequence(xdr, &args->seq_args, &hdr);
2543 encode_putfh(xdr, args->fh, &hdr);
2544 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2545 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2546 encode_nops(&hdr);
2547 }
2548
2549 /*
2550 * GETATTR_BITMAP request
2551 */
2552 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2553 struct xdr_stream *xdr,
2554 struct nfs4_server_caps_arg *args)
2555 {
2556 struct compound_hdr hdr = {
2557 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2558 };
2559
2560 encode_compound_hdr(xdr, req, &hdr);
2561 encode_sequence(xdr, &args->seq_args, &hdr);
2562 encode_putfh(xdr, args->fhandle, &hdr);
2563 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2564 FATTR4_WORD0_FH_EXPIRE_TYPE|
2565 FATTR4_WORD0_LINK_SUPPORT|
2566 FATTR4_WORD0_SYMLINK_SUPPORT|
2567 FATTR4_WORD0_ACLSUPPORT, &hdr);
2568 encode_nops(&hdr);
2569 }
2570
2571 /*
2572 * a RENEW request
2573 */
2574 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2575 struct nfs_client *clp)
2576 {
2577 struct compound_hdr hdr = {
2578 .nops = 0,
2579 };
2580
2581 encode_compound_hdr(xdr, req, &hdr);
2582 encode_renew(xdr, clp->cl_clientid, &hdr);
2583 encode_nops(&hdr);
2584 }
2585
2586 /*
2587 * a SETCLIENTID request
2588 */
2589 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2590 struct xdr_stream *xdr,
2591 struct nfs4_setclientid *sc)
2592 {
2593 struct compound_hdr hdr = {
2594 .nops = 0,
2595 };
2596
2597 encode_compound_hdr(xdr, req, &hdr);
2598 encode_setclientid(xdr, sc, &hdr);
2599 encode_nops(&hdr);
2600 }
2601
2602 /*
2603 * a SETCLIENTID_CONFIRM request
2604 */
2605 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2606 struct xdr_stream *xdr,
2607 struct nfs4_setclientid_res *arg)
2608 {
2609 struct compound_hdr hdr = {
2610 .nops = 0,
2611 };
2612 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2613
2614 encode_compound_hdr(xdr, req, &hdr);
2615 encode_setclientid_confirm(xdr, arg, &hdr);
2616 encode_putrootfh(xdr, &hdr);
2617 encode_fsinfo(xdr, lease_bitmap, &hdr);
2618 encode_nops(&hdr);
2619 }
2620
2621 /*
2622 * DELEGRETURN request
2623 */
2624 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2625 struct xdr_stream *xdr,
2626 const struct nfs4_delegreturnargs *args)
2627 {
2628 struct compound_hdr hdr = {
2629 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2630 };
2631
2632 encode_compound_hdr(xdr, req, &hdr);
2633 encode_sequence(xdr, &args->seq_args, &hdr);
2634 encode_putfh(xdr, args->fhandle, &hdr);
2635 encode_getfattr(xdr, args->bitmask, &hdr);
2636 encode_delegreturn(xdr, args->stateid, &hdr);
2637 encode_nops(&hdr);
2638 }
2639
2640 /*
2641 * Encode FS_LOCATIONS request
2642 */
2643 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2644 struct xdr_stream *xdr,
2645 struct nfs4_fs_locations_arg *args)
2646 {
2647 struct compound_hdr hdr = {
2648 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2649 };
2650 uint32_t replen;
2651
2652 encode_compound_hdr(xdr, req, &hdr);
2653 encode_sequence(xdr, &args->seq_args, &hdr);
2654 encode_putfh(xdr, args->dir_fh, &hdr);
2655 encode_lookup(xdr, args->name, &hdr);
2656 replen = hdr.replen; /* get the attribute into args->page */
2657 encode_fs_locations(xdr, args->bitmask, &hdr);
2658
2659 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2660 0, PAGE_SIZE);
2661 encode_nops(&hdr);
2662 }
2663
2664 /*
2665 * Encode SECINFO request
2666 */
2667 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2668 struct xdr_stream *xdr,
2669 struct nfs4_secinfo_arg *args)
2670 {
2671 struct compound_hdr hdr = {
2672 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2673 };
2674
2675 encode_compound_hdr(xdr, req, &hdr);
2676 encode_sequence(xdr, &args->seq_args, &hdr);
2677 encode_putfh(xdr, args->dir_fh, &hdr);
2678 encode_secinfo(xdr, args->name, &hdr);
2679 encode_nops(&hdr);
2680 }
2681
2682 #if defined(CONFIG_NFS_V4_1)
2683 /*
2684 * BIND_CONN_TO_SESSION request
2685 */
2686 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2687 struct xdr_stream *xdr,
2688 struct nfs_client *clp)
2689 {
2690 struct compound_hdr hdr = {
2691 .minorversion = clp->cl_mvops->minor_version,
2692 };
2693
2694 encode_compound_hdr(xdr, req, &hdr);
2695 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2696 encode_nops(&hdr);
2697 }
2698
2699 /*
2700 * EXCHANGE_ID request
2701 */
2702 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2703 struct xdr_stream *xdr,
2704 struct nfs41_exchange_id_args *args)
2705 {
2706 struct compound_hdr hdr = {
2707 .minorversion = args->client->cl_mvops->minor_version,
2708 };
2709
2710 encode_compound_hdr(xdr, req, &hdr);
2711 encode_exchange_id(xdr, args, &hdr);
2712 encode_nops(&hdr);
2713 }
2714
2715 /*
2716 * a CREATE_SESSION request
2717 */
2718 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2719 struct xdr_stream *xdr,
2720 struct nfs41_create_session_args *args)
2721 {
2722 struct compound_hdr hdr = {
2723 .minorversion = args->client->cl_mvops->minor_version,
2724 };
2725
2726 encode_compound_hdr(xdr, req, &hdr);
2727 encode_create_session(xdr, args, &hdr);
2728 encode_nops(&hdr);
2729 }
2730
2731 /*
2732 * a DESTROY_SESSION request
2733 */
2734 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2735 struct xdr_stream *xdr,
2736 struct nfs4_session *session)
2737 {
2738 struct compound_hdr hdr = {
2739 .minorversion = session->clp->cl_mvops->minor_version,
2740 };
2741
2742 encode_compound_hdr(xdr, req, &hdr);
2743 encode_destroy_session(xdr, session, &hdr);
2744 encode_nops(&hdr);
2745 }
2746
2747 /*
2748 * a DESTROY_CLIENTID request
2749 */
2750 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2751 struct xdr_stream *xdr,
2752 struct nfs_client *clp)
2753 {
2754 struct compound_hdr hdr = {
2755 .minorversion = clp->cl_mvops->minor_version,
2756 };
2757
2758 encode_compound_hdr(xdr, req, &hdr);
2759 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2760 encode_nops(&hdr);
2761 }
2762
2763 /*
2764 * a SEQUENCE request
2765 */
2766 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2767 struct nfs4_sequence_args *args)
2768 {
2769 struct compound_hdr hdr = {
2770 .minorversion = nfs4_xdr_minorversion(args),
2771 };
2772
2773 encode_compound_hdr(xdr, req, &hdr);
2774 encode_sequence(xdr, args, &hdr);
2775 encode_nops(&hdr);
2776 }
2777
2778 /*
2779 * a GET_LEASE_TIME request
2780 */
2781 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2782 struct xdr_stream *xdr,
2783 struct nfs4_get_lease_time_args *args)
2784 {
2785 struct compound_hdr hdr = {
2786 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2787 };
2788 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2789
2790 encode_compound_hdr(xdr, req, &hdr);
2791 encode_sequence(xdr, &args->la_seq_args, &hdr);
2792 encode_putrootfh(xdr, &hdr);
2793 encode_fsinfo(xdr, lease_bitmap, &hdr);
2794 encode_nops(&hdr);
2795 }
2796
2797 /*
2798 * a RECLAIM_COMPLETE request
2799 */
2800 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2801 struct xdr_stream *xdr,
2802 struct nfs41_reclaim_complete_args *args)
2803 {
2804 struct compound_hdr hdr = {
2805 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2806 };
2807
2808 encode_compound_hdr(xdr, req, &hdr);
2809 encode_sequence(xdr, &args->seq_args, &hdr);
2810 encode_reclaim_complete(xdr, args, &hdr);
2811 encode_nops(&hdr);
2812 }
2813
2814 /*
2815 * Encode GETDEVICELIST request
2816 */
2817 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2818 struct xdr_stream *xdr,
2819 struct nfs4_getdevicelist_args *args)
2820 {
2821 struct compound_hdr hdr = {
2822 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2823 };
2824
2825 encode_compound_hdr(xdr, req, &hdr);
2826 encode_sequence(xdr, &args->seq_args, &hdr);
2827 encode_putfh(xdr, args->fh, &hdr);
2828 encode_getdevicelist(xdr, args, &hdr);
2829 encode_nops(&hdr);
2830 }
2831
2832 /*
2833 * Encode GETDEVICEINFO request
2834 */
2835 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2836 struct xdr_stream *xdr,
2837 struct nfs4_getdeviceinfo_args *args)
2838 {
2839 struct compound_hdr hdr = {
2840 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2841 };
2842
2843 encode_compound_hdr(xdr, req, &hdr);
2844 encode_sequence(xdr, &args->seq_args, &hdr);
2845 encode_getdeviceinfo(xdr, args, &hdr);
2846
2847 /* set up reply kvec. Subtract notification bitmap max size (2)
2848 * so that notification bitmap is put in xdr_buf tail */
2849 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2850 args->pdev->pages, args->pdev->pgbase,
2851 args->pdev->pglen);
2852
2853 encode_nops(&hdr);
2854 }
2855
2856 /*
2857 * Encode LAYOUTGET request
2858 */
2859 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2860 struct xdr_stream *xdr,
2861 struct nfs4_layoutget_args *args)
2862 {
2863 struct compound_hdr hdr = {
2864 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2865 };
2866
2867 encode_compound_hdr(xdr, req, &hdr);
2868 encode_sequence(xdr, &args->seq_args, &hdr);
2869 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2870 encode_layoutget(xdr, args, &hdr);
2871
2872 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2873 args->layout.pages, 0, args->layout.pglen);
2874
2875 encode_nops(&hdr);
2876 }
2877
2878 /*
2879 * Encode LAYOUTCOMMIT request
2880 */
2881 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2882 struct xdr_stream *xdr,
2883 struct nfs4_layoutcommit_args *args)
2884 {
2885 struct nfs4_layoutcommit_data *data =
2886 container_of(args, struct nfs4_layoutcommit_data, args);
2887 struct compound_hdr hdr = {
2888 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2889 };
2890
2891 encode_compound_hdr(xdr, req, &hdr);
2892 encode_sequence(xdr, &args->seq_args, &hdr);
2893 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2894 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2895 encode_getfattr(xdr, args->bitmask, &hdr);
2896 encode_nops(&hdr);
2897 }
2898
2899 /*
2900 * Encode LAYOUTRETURN request
2901 */
2902 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2903 struct xdr_stream *xdr,
2904 struct nfs4_layoutreturn_args *args)
2905 {
2906 struct compound_hdr hdr = {
2907 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2908 };
2909
2910 encode_compound_hdr(xdr, req, &hdr);
2911 encode_sequence(xdr, &args->seq_args, &hdr);
2912 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2913 encode_layoutreturn(xdr, args, &hdr);
2914 encode_nops(&hdr);
2915 }
2916
2917 /*
2918 * Encode SECINFO_NO_NAME request
2919 */
2920 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2921 struct xdr_stream *xdr,
2922 struct nfs41_secinfo_no_name_args *args)
2923 {
2924 struct compound_hdr hdr = {
2925 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2926 };
2927
2928 encode_compound_hdr(xdr, req, &hdr);
2929 encode_sequence(xdr, &args->seq_args, &hdr);
2930 encode_putrootfh(xdr, &hdr);
2931 encode_secinfo_no_name(xdr, args, &hdr);
2932 encode_nops(&hdr);
2933 return 0;
2934 }
2935
2936 /*
2937 * Encode TEST_STATEID request
2938 */
2939 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2940 struct xdr_stream *xdr,
2941 struct nfs41_test_stateid_args *args)
2942 {
2943 struct compound_hdr hdr = {
2944 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2945 };
2946
2947 encode_compound_hdr(xdr, req, &hdr);
2948 encode_sequence(xdr, &args->seq_args, &hdr);
2949 encode_test_stateid(xdr, args, &hdr);
2950 encode_nops(&hdr);
2951 }
2952
2953 /*
2954 * Encode FREE_STATEID request
2955 */
2956 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2957 struct xdr_stream *xdr,
2958 struct nfs41_free_stateid_args *args)
2959 {
2960 struct compound_hdr hdr = {
2961 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2962 };
2963
2964 encode_compound_hdr(xdr, req, &hdr);
2965 encode_sequence(xdr, &args->seq_args, &hdr);
2966 encode_free_stateid(xdr, args, &hdr);
2967 encode_nops(&hdr);
2968 }
2969 #endif /* CONFIG_NFS_V4_1 */
2970
2971 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2972 {
2973 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2974 "Remaining buffer length is %tu words.\n",
2975 func, xdr->end - xdr->p);
2976 }
2977
2978 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2979 {
2980 __be32 *p;
2981
2982 p = xdr_inline_decode(xdr, 4);
2983 if (unlikely(!p))
2984 goto out_overflow;
2985 *len = be32_to_cpup(p);
2986 p = xdr_inline_decode(xdr, *len);
2987 if (unlikely(!p))
2988 goto out_overflow;
2989 *string = (char *)p;
2990 return 0;
2991 out_overflow:
2992 print_overflow_msg(__func__, xdr);
2993 return -EIO;
2994 }
2995
2996 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2997 {
2998 __be32 *p;
2999
3000 p = xdr_inline_decode(xdr, 8);
3001 if (unlikely(!p))
3002 goto out_overflow;
3003 hdr->status = be32_to_cpup(p++);
3004 hdr->taglen = be32_to_cpup(p);
3005
3006 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3007 if (unlikely(!p))
3008 goto out_overflow;
3009 hdr->tag = (char *)p;
3010 p += XDR_QUADLEN(hdr->taglen);
3011 hdr->nops = be32_to_cpup(p);
3012 if (unlikely(hdr->nops < 1))
3013 return nfs4_stat_to_errno(hdr->status);
3014 return 0;
3015 out_overflow:
3016 print_overflow_msg(__func__, xdr);
3017 return -EIO;
3018 }
3019
3020 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3021 {
3022 __be32 *p;
3023 uint32_t opnum;
3024 int32_t nfserr;
3025
3026 p = xdr_inline_decode(xdr, 8);
3027 if (unlikely(!p))
3028 goto out_overflow;
3029 opnum = be32_to_cpup(p++);
3030 if (opnum != expected) {
3031 dprintk("nfs: Server returned operation"
3032 " %d but we issued a request for %d\n",
3033 opnum, expected);
3034 return -EIO;
3035 }
3036 nfserr = be32_to_cpup(p);
3037 if (nfserr != NFS_OK)
3038 return nfs4_stat_to_errno(nfserr);
3039 return 0;
3040 out_overflow:
3041 print_overflow_msg(__func__, xdr);
3042 return -EIO;
3043 }
3044
3045 /* Dummy routine */
3046 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3047 {
3048 __be32 *p;
3049 unsigned int strlen;
3050 char *str;
3051
3052 p = xdr_inline_decode(xdr, 12);
3053 if (likely(p))
3054 return decode_opaque_inline(xdr, &strlen, &str);
3055 print_overflow_msg(__func__, xdr);
3056 return -EIO;
3057 }
3058
3059 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3060 {
3061 uint32_t bmlen;
3062 __be32 *p;
3063
3064 p = xdr_inline_decode(xdr, 4);
3065 if (unlikely(!p))
3066 goto out_overflow;
3067 bmlen = be32_to_cpup(p);
3068
3069 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3070 p = xdr_inline_decode(xdr, (bmlen << 2));
3071 if (unlikely(!p))
3072 goto out_overflow;
3073 if (bmlen > 0) {
3074 bitmap[0] = be32_to_cpup(p++);
3075 if (bmlen > 1) {
3076 bitmap[1] = be32_to_cpup(p++);
3077 if (bmlen > 2)
3078 bitmap[2] = be32_to_cpup(p);
3079 }
3080 }
3081 return 0;
3082 out_overflow:
3083 print_overflow_msg(__func__, xdr);
3084 return -EIO;
3085 }
3086
3087 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3088 {
3089 __be32 *p;
3090
3091 p = xdr_inline_decode(xdr, 4);
3092 if (unlikely(!p))
3093 goto out_overflow;
3094 *attrlen = be32_to_cpup(p);
3095 *savep = xdr_stream_pos(xdr);
3096 return 0;
3097 out_overflow:
3098 print_overflow_msg(__func__, xdr);
3099 return -EIO;
3100 }
3101
3102 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3103 {
3104 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3105 int ret;
3106 ret = decode_attr_bitmap(xdr, bitmask);
3107 if (unlikely(ret < 0))
3108 return ret;
3109 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3110 } else
3111 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3112 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3113 bitmask[0], bitmask[1], bitmask[2]);
3114 return 0;
3115 }
3116
3117 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3118 {
3119 __be32 *p;
3120 int ret = 0;
3121
3122 *type = 0;
3123 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3124 return -EIO;
3125 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3126 p = xdr_inline_decode(xdr, 4);
3127 if (unlikely(!p))
3128 goto out_overflow;
3129 *type = be32_to_cpup(p);
3130 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3131 dprintk("%s: bad type %d\n", __func__, *type);
3132 return -EIO;
3133 }
3134 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3135 ret = NFS_ATTR_FATTR_TYPE;
3136 }
3137 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3138 return ret;
3139 out_overflow:
3140 print_overflow_msg(__func__, xdr);
3141 return -EIO;
3142 }
3143
3144 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3145 uint32_t *bitmap, uint32_t *type)
3146 {
3147 __be32 *p;
3148
3149 *type = 0;
3150 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3151 return -EIO;
3152 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3153 p = xdr_inline_decode(xdr, 4);
3154 if (unlikely(!p))
3155 goto out_overflow;
3156 *type = be32_to_cpup(p);
3157 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3158 }
3159 dprintk("%s: expire type=0x%x\n", __func__, *type);
3160 return 0;
3161 out_overflow:
3162 print_overflow_msg(__func__, xdr);
3163 return -EIO;
3164 }
3165
3166 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3167 {
3168 __be32 *p;
3169 int ret = 0;
3170
3171 *change = 0;
3172 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3173 return -EIO;
3174 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3175 p = xdr_inline_decode(xdr, 8);
3176 if (unlikely(!p))
3177 goto out_overflow;
3178 xdr_decode_hyper(p, change);
3179 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3180 ret = NFS_ATTR_FATTR_CHANGE;
3181 }
3182 dprintk("%s: change attribute=%Lu\n", __func__,
3183 (unsigned long long)*change);
3184 return ret;
3185 out_overflow:
3186 print_overflow_msg(__func__, xdr);
3187 return -EIO;
3188 }
3189
3190 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3191 {
3192 __be32 *p;
3193 int ret = 0;
3194
3195 *size = 0;
3196 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3197 return -EIO;
3198 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3199 p = xdr_inline_decode(xdr, 8);
3200 if (unlikely(!p))
3201 goto out_overflow;
3202 xdr_decode_hyper(p, size);
3203 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3204 ret = NFS_ATTR_FATTR_SIZE;
3205 }
3206 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3207 return ret;
3208 out_overflow:
3209 print_overflow_msg(__func__, xdr);
3210 return -EIO;
3211 }
3212
3213 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3214 {
3215 __be32 *p;
3216
3217 *res = 0;
3218 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3219 return -EIO;
3220 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3221 p = xdr_inline_decode(xdr, 4);
3222 if (unlikely(!p))
3223 goto out_overflow;
3224 *res = be32_to_cpup(p);
3225 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3226 }
3227 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3228 return 0;
3229 out_overflow:
3230 print_overflow_msg(__func__, xdr);
3231 return -EIO;
3232 }
3233
3234 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3235 {
3236 __be32 *p;
3237
3238 *res = 0;
3239 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3240 return -EIO;
3241 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3242 p = xdr_inline_decode(xdr, 4);
3243 if (unlikely(!p))
3244 goto out_overflow;
3245 *res = be32_to_cpup(p);
3246 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3247 }
3248 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3249 return 0;
3250 out_overflow:
3251 print_overflow_msg(__func__, xdr);
3252 return -EIO;
3253 }
3254
3255 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3256 {
3257 __be32 *p;
3258 int ret = 0;
3259
3260 fsid->major = 0;
3261 fsid->minor = 0;
3262 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3263 return -EIO;
3264 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3265 p = xdr_inline_decode(xdr, 16);
3266 if (unlikely(!p))
3267 goto out_overflow;
3268 p = xdr_decode_hyper(p, &fsid->major);
3269 xdr_decode_hyper(p, &fsid->minor);
3270 bitmap[0] &= ~FATTR4_WORD0_FSID;
3271 ret = NFS_ATTR_FATTR_FSID;
3272 }
3273 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3274 (unsigned long long)fsid->major,
3275 (unsigned long long)fsid->minor);
3276 return ret;
3277 out_overflow:
3278 print_overflow_msg(__func__, xdr);
3279 return -EIO;
3280 }
3281
3282 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3283 {
3284 __be32 *p;
3285
3286 *res = 60;
3287 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3288 return -EIO;
3289 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3290 p = xdr_inline_decode(xdr, 4);
3291 if (unlikely(!p))
3292 goto out_overflow;
3293 *res = be32_to_cpup(p);
3294 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3295 }
3296 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3297 return 0;
3298 out_overflow:
3299 print_overflow_msg(__func__, xdr);
3300 return -EIO;
3301 }
3302
3303 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3304 {
3305 __be32 *p;
3306
3307 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3308 return -EIO;
3309 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3310 p = xdr_inline_decode(xdr, 4);
3311 if (unlikely(!p))
3312 goto out_overflow;
3313 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3314 *res = -be32_to_cpup(p);
3315 }
3316 return 0;
3317 out_overflow:
3318 print_overflow_msg(__func__, xdr);
3319 return -EIO;
3320 }
3321
3322 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3323 {
3324 __be32 *p;
3325 int len;
3326
3327 if (fh != NULL)
3328 memset(fh, 0, sizeof(*fh));
3329
3330 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3331 return -EIO;
3332 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3333 p = xdr_inline_decode(xdr, 4);
3334 if (unlikely(!p))
3335 goto out_overflow;
3336 len = be32_to_cpup(p);
3337 if (len > NFS4_FHSIZE)
3338 return -EIO;
3339 p = xdr_inline_decode(xdr, len);
3340 if (unlikely(!p))
3341 goto out_overflow;
3342 if (fh != NULL) {
3343 memcpy(fh->data, p, len);
3344 fh->size = len;
3345 }
3346 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3347 }
3348 return 0;
3349 out_overflow:
3350 print_overflow_msg(__func__, xdr);
3351 return -EIO;
3352 }
3353
3354 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3355 {
3356 __be32 *p;
3357
3358 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3359 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3360 return -EIO;
3361 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3362 p = xdr_inline_decode(xdr, 4);
3363 if (unlikely(!p))
3364 goto out_overflow;
3365 *res = be32_to_cpup(p);
3366 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3367 }
3368 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3369 return 0;
3370 out_overflow:
3371 print_overflow_msg(__func__, xdr);
3372 return -EIO;
3373 }
3374
3375 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3376 {
3377 __be32 *p;
3378 int ret = 0;
3379
3380 *fileid = 0;
3381 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3382 return -EIO;
3383 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3384 p = xdr_inline_decode(xdr, 8);
3385 if (unlikely(!p))
3386 goto out_overflow;
3387 xdr_decode_hyper(p, fileid);
3388 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3389 ret = NFS_ATTR_FATTR_FILEID;
3390 }
3391 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3392 return ret;
3393 out_overflow:
3394 print_overflow_msg(__func__, xdr);
3395 return -EIO;
3396 }
3397
3398 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3399 {
3400 __be32 *p;
3401 int ret = 0;
3402
3403 *fileid = 0;
3404 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3405 return -EIO;
3406 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3407 p = xdr_inline_decode(xdr, 8);
3408 if (unlikely(!p))
3409 goto out_overflow;
3410 xdr_decode_hyper(p, fileid);
3411 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3412 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3413 }
3414 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3415 return ret;
3416 out_overflow:
3417 print_overflow_msg(__func__, xdr);
3418 return -EIO;
3419 }
3420
3421 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3422 {
3423 __be32 *p;
3424 int status = 0;
3425
3426 *res = 0;
3427 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3428 return -EIO;
3429 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3430 p = xdr_inline_decode(xdr, 8);
3431 if (unlikely(!p))
3432 goto out_overflow;
3433 xdr_decode_hyper(p, res);
3434 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3435 }
3436 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3437 return status;
3438 out_overflow:
3439 print_overflow_msg(__func__, xdr);
3440 return -EIO;
3441 }
3442
3443 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3444 {
3445 __be32 *p;
3446 int status = 0;
3447
3448 *res = 0;
3449 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3450 return -EIO;
3451 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3452 p = xdr_inline_decode(xdr, 8);
3453 if (unlikely(!p))
3454 goto out_overflow;
3455 xdr_decode_hyper(p, res);
3456 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3457 }
3458 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3459 return status;
3460 out_overflow:
3461 print_overflow_msg(__func__, xdr);
3462 return -EIO;
3463 }
3464
3465 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3466 {
3467 __be32 *p;
3468 int status = 0;
3469
3470 *res = 0;
3471 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3472 return -EIO;
3473 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3474 p = xdr_inline_decode(xdr, 8);
3475 if (unlikely(!p))
3476 goto out_overflow;
3477 xdr_decode_hyper(p, res);
3478 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3479 }
3480 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3481 return status;
3482 out_overflow:
3483 print_overflow_msg(__func__, xdr);
3484 return -EIO;
3485 }
3486
3487 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3488 {
3489 u32 n;
3490 __be32 *p;
3491 int status = 0;
3492
3493 p = xdr_inline_decode(xdr, 4);
3494 if (unlikely(!p))
3495 goto out_overflow;
3496 n = be32_to_cpup(p);
3497 if (n == 0)
3498 goto root_path;
3499 dprintk("pathname4: ");
3500 path->ncomponents = 0;
3501 while (path->ncomponents < n) {
3502 struct nfs4_string *component = &path->components[path->ncomponents];
3503 status = decode_opaque_inline(xdr, &component->len, &component->data);
3504 if (unlikely(status != 0))
3505 goto out_eio;
3506 ifdebug (XDR)
3507 pr_cont("%s%.*s ",
3508 (path->ncomponents != n ? "/ " : ""),
3509 component->len, component->data);
3510 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3511 path->ncomponents++;
3512 else {
3513 dprintk("cannot parse %d components in path\n", n);
3514 goto out_eio;
3515 }
3516 }
3517 out:
3518 return status;
3519 root_path:
3520 /* a root pathname is sent as a zero component4 */
3521 path->ncomponents = 1;
3522 path->components[0].len=0;
3523 path->components[0].data=NULL;
3524 dprintk("pathname4: /\n");
3525 goto out;
3526 out_eio:
3527 dprintk(" status %d", status);
3528 status = -EIO;
3529 goto out;
3530 out_overflow:
3531 print_overflow_msg(__func__, xdr);
3532 return -EIO;
3533 }
3534
3535 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3536 {
3537 int n;
3538 __be32 *p;
3539 int status = -EIO;
3540
3541 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3542 goto out;
3543 status = 0;
3544 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3545 goto out;
3546 status = -EIO;
3547 /* Ignore borken servers that return unrequested attrs */
3548 if (unlikely(res == NULL))
3549 goto out;
3550 dprintk("%s: fsroot:\n", __func__);
3551 status = decode_pathname(xdr, &res->fs_path);
3552 if (unlikely(status != 0))
3553 goto out;
3554 p = xdr_inline_decode(xdr, 4);
3555 if (unlikely(!p))
3556 goto out_overflow;
3557 n = be32_to_cpup(p);
3558 if (n <= 0)
3559 goto out_eio;
3560 res->nlocations = 0;
3561 while (res->nlocations < n) {
3562 u32 m;
3563 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3564
3565 p = xdr_inline_decode(xdr, 4);
3566 if (unlikely(!p))
3567 goto out_overflow;
3568 m = be32_to_cpup(p);
3569
3570 loc->nservers = 0;
3571 dprintk("%s: servers:\n", __func__);
3572 while (loc->nservers < m) {
3573 struct nfs4_string *server = &loc->servers[loc->nservers];
3574 status = decode_opaque_inline(xdr, &server->len, &server->data);
3575 if (unlikely(status != 0))
3576 goto out_eio;
3577 dprintk("%s ", server->data);
3578 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3579 loc->nservers++;
3580 else {
3581 unsigned int i;
3582 dprintk("%s: using first %u of %u servers "
3583 "returned for location %u\n",
3584 __func__,
3585 NFS4_FS_LOCATION_MAXSERVERS,
3586 m, res->nlocations);
3587 for (i = loc->nservers; i < m; i++) {
3588 unsigned int len;
3589 char *data;
3590 status = decode_opaque_inline(xdr, &len, &data);
3591 if (unlikely(status != 0))
3592 goto out_eio;
3593 }
3594 }
3595 }
3596 status = decode_pathname(xdr, &loc->rootpath);
3597 if (unlikely(status != 0))
3598 goto out_eio;
3599 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3600 res->nlocations++;
3601 }
3602 if (res->nlocations != 0)
3603 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3604 out:
3605 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3606 return status;
3607 out_overflow:
3608 print_overflow_msg(__func__, xdr);
3609 out_eio:
3610 status = -EIO;
3611 goto out;
3612 }
3613
3614 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3615 {
3616 __be32 *p;
3617 int status = 0;
3618
3619 *res = 0;
3620 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3621 return -EIO;
3622 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3623 p = xdr_inline_decode(xdr, 8);
3624 if (unlikely(!p))
3625 goto out_overflow;
3626 xdr_decode_hyper(p, res);
3627 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3628 }
3629 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3630 return status;
3631 out_overflow:
3632 print_overflow_msg(__func__, xdr);
3633 return -EIO;
3634 }
3635
3636 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3637 {
3638 __be32 *p;
3639 int status = 0;
3640
3641 *maxlink = 1;
3642 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3643 return -EIO;
3644 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3645 p = xdr_inline_decode(xdr, 4);
3646 if (unlikely(!p))
3647 goto out_overflow;
3648 *maxlink = be32_to_cpup(p);
3649 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3650 }
3651 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3652 return status;
3653 out_overflow:
3654 print_overflow_msg(__func__, xdr);
3655 return -EIO;
3656 }
3657
3658 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3659 {
3660 __be32 *p;
3661 int status = 0;
3662
3663 *maxname = 1024;
3664 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3665 return -EIO;
3666 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3667 p = xdr_inline_decode(xdr, 4);
3668 if (unlikely(!p))
3669 goto out_overflow;
3670 *maxname = be32_to_cpup(p);
3671 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3672 }
3673 dprintk("%s: maxname=%u\n", __func__, *maxname);
3674 return status;
3675 out_overflow:
3676 print_overflow_msg(__func__, xdr);
3677 return -EIO;
3678 }
3679
3680 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3681 {
3682 __be32 *p;
3683 int status = 0;
3684
3685 *res = 1024;
3686 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3687 return -EIO;
3688 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3689 uint64_t maxread;
3690 p = xdr_inline_decode(xdr, 8);
3691 if (unlikely(!p))
3692 goto out_overflow;
3693 xdr_decode_hyper(p, &maxread);
3694 if (maxread > 0x7FFFFFFF)
3695 maxread = 0x7FFFFFFF;
3696 *res = (uint32_t)maxread;
3697 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3698 }
3699 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3700 return status;
3701 out_overflow:
3702 print_overflow_msg(__func__, xdr);
3703 return -EIO;
3704 }
3705
3706 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3707 {
3708 __be32 *p;
3709 int status = 0;
3710
3711 *res = 1024;
3712 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3713 return -EIO;
3714 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3715 uint64_t maxwrite;
3716 p = xdr_inline_decode(xdr, 8);
3717 if (unlikely(!p))
3718 goto out_overflow;
3719 xdr_decode_hyper(p, &maxwrite);
3720 if (maxwrite > 0x7FFFFFFF)
3721 maxwrite = 0x7FFFFFFF;
3722 *res = (uint32_t)maxwrite;
3723 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3724 }
3725 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3726 return status;
3727 out_overflow:
3728 print_overflow_msg(__func__, xdr);
3729 return -EIO;
3730 }
3731
3732 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3733 {
3734 uint32_t tmp;
3735 __be32 *p;
3736 int ret = 0;
3737
3738 *mode = 0;
3739 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3740 return -EIO;
3741 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3742 p = xdr_inline_decode(xdr, 4);
3743 if (unlikely(!p))
3744 goto out_overflow;
3745 tmp = be32_to_cpup(p);
3746 *mode = tmp & ~S_IFMT;
3747 bitmap[1] &= ~FATTR4_WORD1_MODE;
3748 ret = NFS_ATTR_FATTR_MODE;
3749 }
3750 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3751 return ret;
3752 out_overflow:
3753 print_overflow_msg(__func__, xdr);
3754 return -EIO;
3755 }
3756
3757 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3758 {
3759 __be32 *p;
3760 int ret = 0;
3761
3762 *nlink = 1;
3763 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3764 return -EIO;
3765 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3766 p = xdr_inline_decode(xdr, 4);
3767 if (unlikely(!p))
3768 goto out_overflow;
3769 *nlink = be32_to_cpup(p);
3770 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3771 ret = NFS_ATTR_FATTR_NLINK;
3772 }
3773 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3774 return ret;
3775 out_overflow:
3776 print_overflow_msg(__func__, xdr);
3777 return -EIO;
3778 }
3779
3780 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3781 const struct nfs_server *server, uint32_t *uid,
3782 struct nfs4_string *owner_name)
3783 {
3784 uint32_t len;
3785 __be32 *p;
3786 int ret = 0;
3787
3788 *uid = -2;
3789 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3790 return -EIO;
3791 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3792 p = xdr_inline_decode(xdr, 4);
3793 if (unlikely(!p))
3794 goto out_overflow;
3795 len = be32_to_cpup(p);
3796 p = xdr_inline_decode(xdr, len);
3797 if (unlikely(!p))
3798 goto out_overflow;
3799 if (owner_name != NULL) {
3800 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3801 if (owner_name->data != NULL) {
3802 owner_name->len = len;
3803 ret = NFS_ATTR_FATTR_OWNER_NAME;
3804 }
3805 } else if (len < XDR_MAX_NETOBJ) {
3806 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3807 ret = NFS_ATTR_FATTR_OWNER;
3808 else
3809 dprintk("%s: nfs_map_name_to_uid failed!\n",
3810 __func__);
3811 } else
3812 dprintk("%s: name too long (%u)!\n",
3813 __func__, len);
3814 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3815 }
3816 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3817 return ret;
3818 out_overflow:
3819 print_overflow_msg(__func__, xdr);
3820 return -EIO;
3821 }
3822
3823 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3824 const struct nfs_server *server, uint32_t *gid,
3825 struct nfs4_string *group_name)
3826 {
3827 uint32_t len;
3828 __be32 *p;
3829 int ret = 0;
3830
3831 *gid = -2;
3832 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3833 return -EIO;
3834 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3835 p = xdr_inline_decode(xdr, 4);
3836 if (unlikely(!p))
3837 goto out_overflow;
3838 len = be32_to_cpup(p);
3839 p = xdr_inline_decode(xdr, len);
3840 if (unlikely(!p))
3841 goto out_overflow;
3842 if (group_name != NULL) {
3843 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3844 if (group_name->data != NULL) {
3845 group_name->len = len;
3846 ret = NFS_ATTR_FATTR_GROUP_NAME;
3847 }
3848 } else if (len < XDR_MAX_NETOBJ) {
3849 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3850 ret = NFS_ATTR_FATTR_GROUP;
3851 else
3852 dprintk("%s: nfs_map_group_to_gid failed!\n",
3853 __func__);
3854 } else
3855 dprintk("%s: name too long (%u)!\n",
3856 __func__, len);
3857 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3858 }
3859 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3860 return ret;
3861 out_overflow:
3862 print_overflow_msg(__func__, xdr);
3863 return -EIO;
3864 }
3865
3866 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3867 {
3868 uint32_t major = 0, minor = 0;
3869 __be32 *p;
3870 int ret = 0;
3871
3872 *rdev = MKDEV(0,0);
3873 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3874 return -EIO;
3875 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3876 dev_t tmp;
3877
3878 p = xdr_inline_decode(xdr, 8);
3879 if (unlikely(!p))
3880 goto out_overflow;
3881 major = be32_to_cpup(p++);
3882 minor = be32_to_cpup(p);
3883 tmp = MKDEV(major, minor);
3884 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3885 *rdev = tmp;
3886 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3887 ret = NFS_ATTR_FATTR_RDEV;
3888 }
3889 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3890 return ret;
3891 out_overflow:
3892 print_overflow_msg(__func__, xdr);
3893 return -EIO;
3894 }
3895
3896 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3897 {
3898 __be32 *p;
3899 int status = 0;
3900
3901 *res = 0;
3902 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3903 return -EIO;
3904 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3905 p = xdr_inline_decode(xdr, 8);
3906 if (unlikely(!p))
3907 goto out_overflow;
3908 xdr_decode_hyper(p, res);
3909 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3910 }
3911 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3912 return status;
3913 out_overflow:
3914 print_overflow_msg(__func__, xdr);
3915 return -EIO;
3916 }
3917
3918 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3919 {
3920 __be32 *p;
3921 int status = 0;
3922
3923 *res = 0;
3924 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3925 return -EIO;
3926 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3927 p = xdr_inline_decode(xdr, 8);
3928 if (unlikely(!p))
3929 goto out_overflow;
3930 xdr_decode_hyper(p, res);
3931 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3932 }
3933 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3934 return status;
3935 out_overflow:
3936 print_overflow_msg(__func__, xdr);
3937 return -EIO;
3938 }
3939
3940 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3941 {
3942 __be32 *p;
3943 int status = 0;
3944
3945 *res = 0;
3946 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3947 return -EIO;
3948 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3949 p = xdr_inline_decode(xdr, 8);
3950 if (unlikely(!p))
3951 goto out_overflow;
3952 xdr_decode_hyper(p, res);
3953 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3954 }
3955 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3956 return status;
3957 out_overflow:
3958 print_overflow_msg(__func__, xdr);
3959 return -EIO;
3960 }
3961
3962 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3963 {
3964 __be32 *p;
3965 int ret = 0;
3966
3967 *used = 0;
3968 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3969 return -EIO;
3970 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3971 p = xdr_inline_decode(xdr, 8);
3972 if (unlikely(!p))
3973 goto out_overflow;
3974 xdr_decode_hyper(p, used);
3975 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3976 ret = NFS_ATTR_FATTR_SPACE_USED;
3977 }
3978 dprintk("%s: space used=%Lu\n", __func__,
3979 (unsigned long long)*used);
3980 return ret;
3981 out_overflow:
3982 print_overflow_msg(__func__, xdr);
3983 return -EIO;
3984 }
3985
3986 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3987 {
3988 __be32 *p;
3989 uint64_t sec;
3990 uint32_t nsec;
3991
3992 p = xdr_inline_decode(xdr, 12);
3993 if (unlikely(!p))
3994 goto out_overflow;
3995 p = xdr_decode_hyper(p, &sec);
3996 nsec = be32_to_cpup(p);
3997 time->tv_sec = (time_t)sec;
3998 time->tv_nsec = (long)nsec;
3999 return 0;
4000 out_overflow:
4001 print_overflow_msg(__func__, xdr);
4002 return -EIO;
4003 }
4004
4005 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4006 {
4007 int status = 0;
4008
4009 time->tv_sec = 0;
4010 time->tv_nsec = 0;
4011 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4012 return -EIO;
4013 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4014 status = decode_attr_time(xdr, time);
4015 if (status == 0)
4016 status = NFS_ATTR_FATTR_ATIME;
4017 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4018 }
4019 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4020 return status;
4021 }
4022
4023 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4024 {
4025 int status = 0;
4026
4027 time->tv_sec = 0;
4028 time->tv_nsec = 0;
4029 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4030 return -EIO;
4031 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4032 status = decode_attr_time(xdr, time);
4033 if (status == 0)
4034 status = NFS_ATTR_FATTR_CTIME;
4035 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4036 }
4037 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4038 return status;
4039 }
4040
4041 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4042 struct timespec *time)
4043 {
4044 int status = 0;
4045
4046 time->tv_sec = 0;
4047 time->tv_nsec = 0;
4048 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4049 return -EIO;
4050 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4051 status = decode_attr_time(xdr, time);
4052 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4053 }
4054 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4055 (long)time->tv_nsec);
4056 return status;
4057 }
4058
4059 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4060 {
4061 int status = 0;
4062
4063 time->tv_sec = 0;
4064 time->tv_nsec = 0;
4065 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4066 return -EIO;
4067 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4068 status = decode_attr_time(xdr, time);
4069 if (status == 0)
4070 status = NFS_ATTR_FATTR_MTIME;
4071 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4072 }
4073 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4074 return status;
4075 }
4076
4077 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4078 {
4079 unsigned int attrwords = XDR_QUADLEN(attrlen);
4080 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4081
4082 if (unlikely(attrwords != nwords)) {
4083 dprintk("%s: server returned incorrect attribute length: "
4084 "%u %c %u\n",
4085 __func__,
4086 attrwords << 2,
4087 (attrwords < nwords) ? '<' : '>',
4088 nwords << 2);
4089 return -EIO;
4090 }
4091 return 0;
4092 }
4093
4094 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4095 {
4096 __be32 *p;
4097
4098 p = xdr_inline_decode(xdr, 20);
4099 if (unlikely(!p))
4100 goto out_overflow;
4101 cinfo->atomic = be32_to_cpup(p++);
4102 p = xdr_decode_hyper(p, &cinfo->before);
4103 xdr_decode_hyper(p, &cinfo->after);
4104 return 0;
4105 out_overflow:
4106 print_overflow_msg(__func__, xdr);
4107 return -EIO;
4108 }
4109
4110 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4111 {
4112 __be32 *p;
4113 uint32_t supp, acc;
4114 int status;
4115
4116 status = decode_op_hdr(xdr, OP_ACCESS);
4117 if (status)
4118 return status;
4119 p = xdr_inline_decode(xdr, 8);
4120 if (unlikely(!p))
4121 goto out_overflow;
4122 supp = be32_to_cpup(p++);
4123 acc = be32_to_cpup(p);
4124 *supported = supp;
4125 *access = acc;
4126 return 0;
4127 out_overflow:
4128 print_overflow_msg(__func__, xdr);
4129 return -EIO;
4130 }
4131
4132 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4133 {
4134 __be32 *p;
4135
4136 p = xdr_inline_decode(xdr, len);
4137 if (likely(p)) {
4138 memcpy(buf, p, len);
4139 return 0;
4140 }
4141 print_overflow_msg(__func__, xdr);
4142 return -EIO;
4143 }
4144
4145 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4146 {
4147 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4148 }
4149
4150 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4151 {
4152 int status;
4153
4154 status = decode_op_hdr(xdr, OP_CLOSE);
4155 if (status != -EIO)
4156 nfs_increment_open_seqid(status, res->seqid);
4157 if (!status)
4158 status = decode_stateid(xdr, &res->stateid);
4159 return status;
4160 }
4161
4162 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4163 {
4164 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4165 }
4166
4167 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4168 {
4169 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4170 }
4171
4172 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4173 {
4174 int status;
4175
4176 status = decode_op_hdr(xdr, OP_COMMIT);
4177 if (!status)
4178 status = decode_write_verifier(xdr, &res->verf->verifier);
4179 return status;
4180 }
4181
4182 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4183 {
4184 __be32 *p;
4185 uint32_t bmlen;
4186 int status;
4187
4188 status = decode_op_hdr(xdr, OP_CREATE);
4189 if (status)
4190 return status;
4191 if ((status = decode_change_info(xdr, cinfo)))
4192 return status;
4193 p = xdr_inline_decode(xdr, 4);
4194 if (unlikely(!p))
4195 goto out_overflow;
4196 bmlen = be32_to_cpup(p);
4197 p = xdr_inline_decode(xdr, bmlen << 2);
4198 if (likely(p))
4199 return 0;
4200 out_overflow:
4201 print_overflow_msg(__func__, xdr);
4202 return -EIO;
4203 }
4204
4205 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4206 {
4207 unsigned int savep;
4208 uint32_t attrlen, bitmap[3] = {0};
4209 int status;
4210
4211 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4212 goto xdr_error;
4213 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4214 goto xdr_error;
4215 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4216 goto xdr_error;
4217 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4218 goto xdr_error;
4219 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4220 &res->fh_expire_type)) != 0)
4221 goto xdr_error;
4222 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4223 goto xdr_error;
4224 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4225 goto xdr_error;
4226 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4227 goto xdr_error;
4228 status = verify_attr_len(xdr, savep, attrlen);
4229 xdr_error:
4230 dprintk("%s: xdr returned %d!\n", __func__, -status);
4231 return status;
4232 }
4233
4234 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4235 {
4236 unsigned int savep;
4237 uint32_t attrlen, bitmap[3] = {0};
4238 int status;
4239
4240 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4241 goto xdr_error;
4242 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4243 goto xdr_error;
4244 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4245 goto xdr_error;
4246
4247 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4248 goto xdr_error;
4249 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4250 goto xdr_error;
4251 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4252 goto xdr_error;
4253 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4254 goto xdr_error;
4255 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4256 goto xdr_error;
4257 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4258 goto xdr_error;
4259
4260 status = verify_attr_len(xdr, savep, attrlen);
4261 xdr_error:
4262 dprintk("%s: xdr returned %d!\n", __func__, -status);
4263 return status;
4264 }
4265
4266 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4267 {
4268 unsigned int savep;
4269 uint32_t attrlen, bitmap[3] = {0};
4270 int status;
4271
4272 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4273 goto xdr_error;
4274 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4275 goto xdr_error;
4276 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4277 goto xdr_error;
4278
4279 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4280 goto xdr_error;
4281 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4282 goto xdr_error;
4283
4284 status = verify_attr_len(xdr, savep, attrlen);
4285 xdr_error:
4286 dprintk("%s: xdr returned %d!\n", __func__, -status);
4287 return status;
4288 }
4289
4290 static int decode_threshold_hint(struct xdr_stream *xdr,
4291 uint32_t *bitmap,
4292 uint64_t *res,
4293 uint32_t hint_bit)
4294 {
4295 __be32 *p;
4296
4297 *res = 0;
4298 if (likely(bitmap[0] & hint_bit)) {
4299 p = xdr_inline_decode(xdr, 8);
4300 if (unlikely(!p))
4301 goto out_overflow;
4302 xdr_decode_hyper(p, res);
4303 }
4304 return 0;
4305 out_overflow:
4306 print_overflow_msg(__func__, xdr);
4307 return -EIO;
4308 }
4309
4310 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4311 struct nfs4_threshold *res)
4312 {
4313 __be32 *p;
4314 unsigned int savep;
4315 uint32_t bitmap[3] = {0,}, attrlen;
4316 int status;
4317
4318 /* layout type */
4319 p = xdr_inline_decode(xdr, 4);
4320 if (unlikely(!p)) {
4321 print_overflow_msg(__func__, xdr);
4322 return -EIO;
4323 }
4324 res->l_type = be32_to_cpup(p);
4325
4326 /* thi_hintset bitmap */
4327 status = decode_attr_bitmap(xdr, bitmap);
4328 if (status < 0)
4329 goto xdr_error;
4330
4331 /* thi_hintlist length */
4332 status = decode_attr_length(xdr, &attrlen, &savep);
4333 if (status < 0)
4334 goto xdr_error;
4335 /* thi_hintlist */
4336 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4337 if (status < 0)
4338 goto xdr_error;
4339 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4340 if (status < 0)
4341 goto xdr_error;
4342 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4343 THRESHOLD_RD_IO);
4344 if (status < 0)
4345 goto xdr_error;
4346 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4347 THRESHOLD_WR_IO);
4348 if (status < 0)
4349 goto xdr_error;
4350
4351 status = verify_attr_len(xdr, savep, attrlen);
4352 res->bm = bitmap[0];
4353
4354 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4355 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4356 res->wr_io_sz);
4357 xdr_error:
4358 dprintk("%s ret=%d!\n", __func__, status);
4359 return status;
4360 }
4361
4362 /*
4363 * Thresholds on pNFS direct I/O vrs MDS I/O
4364 */
4365 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4366 uint32_t *bitmap,
4367 struct nfs4_threshold *res)
4368 {
4369 __be32 *p;
4370 int status = 0;
4371 uint32_t num;
4372
4373 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4374 return -EIO;
4375 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4376 /* Did the server return an unrequested attribute? */
4377 if (unlikely(res == NULL))
4378 return -EREMOTEIO;
4379 p = xdr_inline_decode(xdr, 4);
4380 if (unlikely(!p))
4381 goto out_overflow;
4382 num = be32_to_cpup(p);
4383 if (num == 0)
4384 return 0;
4385 if (num > 1)
4386 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4387 "drivers per filesystem not supported\n",
4388 __func__);
4389
4390 status = decode_first_threshold_item4(xdr, res);
4391 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4392 }
4393 return status;
4394 out_overflow:
4395 print_overflow_msg(__func__, xdr);
4396 return -EIO;
4397 }
4398
4399 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4400 struct nfs_fattr *fattr, struct nfs_fh *fh,
4401 struct nfs4_fs_locations *fs_loc,
4402 const struct nfs_server *server)
4403 {
4404 int status;
4405 umode_t fmode = 0;
4406 uint32_t type;
4407 int32_t err;
4408
4409 status = decode_attr_type(xdr, bitmap, &type);
4410 if (status < 0)
4411 goto xdr_error;
4412 fattr->mode = 0;
4413 if (status != 0) {
4414 fattr->mode |= nfs_type2fmt[type];
4415 fattr->valid |= status;
4416 }
4417
4418 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4419 if (status < 0)
4420 goto xdr_error;
4421 fattr->valid |= status;
4422
4423 status = decode_attr_size(xdr, bitmap, &fattr->size);
4424 if (status < 0)
4425 goto xdr_error;
4426 fattr->valid |= status;
4427
4428 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4429 if (status < 0)
4430 goto xdr_error;
4431 fattr->valid |= status;
4432
4433 err = 0;
4434 status = decode_attr_error(xdr, bitmap, &err);
4435 if (status < 0)
4436 goto xdr_error;
4437
4438 status = decode_attr_filehandle(xdr, bitmap, fh);
4439 if (status < 0)
4440 goto xdr_error;
4441
4442 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4443 if (status < 0)
4444 goto xdr_error;
4445 fattr->valid |= status;
4446
4447 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4448 if (status < 0)
4449 goto xdr_error;
4450 fattr->valid |= status;
4451
4452 status = decode_attr_mode(xdr, bitmap, &fmode);
4453 if (status < 0)
4454 goto xdr_error;
4455 if (status != 0) {
4456 fattr->mode |= fmode;
4457 fattr->valid |= status;
4458 }
4459
4460 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4461 if (status < 0)
4462 goto xdr_error;
4463 fattr->valid |= status;
4464
4465 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4466 if (status < 0)
4467 goto xdr_error;
4468 fattr->valid |= status;
4469
4470 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4471 if (status < 0)
4472 goto xdr_error;
4473 fattr->valid |= status;
4474
4475 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4476 if (status < 0)
4477 goto xdr_error;
4478 fattr->valid |= status;
4479
4480 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4481 if (status < 0)
4482 goto xdr_error;
4483 fattr->valid |= status;
4484
4485 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4486 if (status < 0)
4487 goto xdr_error;
4488 fattr->valid |= status;
4489
4490 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4491 if (status < 0)
4492 goto xdr_error;
4493 fattr->valid |= status;
4494
4495 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4496 if (status < 0)
4497 goto xdr_error;
4498 fattr->valid |= status;
4499
4500 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4501 if (status < 0)
4502 goto xdr_error;
4503 fattr->valid |= status;
4504
4505 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4506 if (status < 0)
4507 goto xdr_error;
4508
4509 xdr_error:
4510 dprintk("%s: xdr returned %d\n", __func__, -status);
4511 return status;
4512 }
4513
4514 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4515 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4516 const struct nfs_server *server)
4517 {
4518 unsigned int savep;
4519 uint32_t attrlen,
4520 bitmap[3] = {0};
4521 int status;
4522
4523 status = decode_op_hdr(xdr, OP_GETATTR);
4524 if (status < 0)
4525 goto xdr_error;
4526
4527 status = decode_attr_bitmap(xdr, bitmap);
4528 if (status < 0)
4529 goto xdr_error;
4530
4531 status = decode_attr_length(xdr, &attrlen, &savep);
4532 if (status < 0)
4533 goto xdr_error;
4534
4535 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4536 if (status < 0)
4537 goto xdr_error;
4538
4539 status = verify_attr_len(xdr, savep, attrlen);
4540 xdr_error:
4541 dprintk("%s: xdr returned %d\n", __func__, -status);
4542 return status;
4543 }
4544
4545 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4546 const struct nfs_server *server)
4547 {
4548 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4549 }
4550
4551 /*
4552 * Decode potentially multiple layout types. Currently we only support
4553 * one layout driver per file system.
4554 */
4555 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4556 uint32_t *layouttype)
4557 {
4558 uint32_t *p;
4559 int num;
4560
4561 p = xdr_inline_decode(xdr, 4);
4562 if (unlikely(!p))
4563 goto out_overflow;
4564 num = be32_to_cpup(p);
4565
4566 /* pNFS is not supported by the underlying file system */
4567 if (num == 0) {
4568 *layouttype = 0;
4569 return 0;
4570 }
4571 if (num > 1)
4572 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4573 "drivers per filesystem not supported\n", __func__);
4574
4575 /* Decode and set first layout type, move xdr->p past unused types */
4576 p = xdr_inline_decode(xdr, num * 4);
4577 if (unlikely(!p))
4578 goto out_overflow;
4579 *layouttype = be32_to_cpup(p);
4580 return 0;
4581 out_overflow:
4582 print_overflow_msg(__func__, xdr);
4583 return -EIO;
4584 }
4585
4586 /*
4587 * The type of file system exported.
4588 * Note we must ensure that layouttype is set in any non-error case.
4589 */
4590 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4591 uint32_t *layouttype)
4592 {
4593 int status = 0;
4594
4595 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4596 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4597 return -EIO;
4598 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4599 status = decode_first_pnfs_layout_type(xdr, layouttype);
4600 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4601 } else
4602 *layouttype = 0;
4603 return status;
4604 }
4605
4606 /*
4607 * The prefered block size for layout directed io
4608 */
4609 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4610 uint32_t *res)
4611 {
4612 __be32 *p;
4613
4614 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4615 *res = 0;
4616 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4617 p = xdr_inline_decode(xdr, 4);
4618 if (unlikely(!p)) {
4619 print_overflow_msg(__func__, xdr);
4620 return -EIO;
4621 }
4622 *res = be32_to_cpup(p);
4623 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4624 }
4625 return 0;
4626 }
4627
4628 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4629 {
4630 unsigned int savep;
4631 uint32_t attrlen, bitmap[3];
4632 int status;
4633
4634 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4635 goto xdr_error;
4636 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4637 goto xdr_error;
4638 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4639 goto xdr_error;
4640
4641 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4642
4643 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4644 goto xdr_error;
4645 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4646 goto xdr_error;
4647 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4648 goto xdr_error;
4649 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4650 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4651 goto xdr_error;
4652 fsinfo->wtpref = fsinfo->wtmax;
4653 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4654 if (status != 0)
4655 goto xdr_error;
4656 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4657 if (status != 0)
4658 goto xdr_error;
4659 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4660 if (status)
4661 goto xdr_error;
4662
4663 status = verify_attr_len(xdr, savep, attrlen);
4664 xdr_error:
4665 dprintk("%s: xdr returned %d!\n", __func__, -status);
4666 return status;
4667 }
4668
4669 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4670 {
4671 __be32 *p;
4672 uint32_t len;
4673 int status;
4674
4675 /* Zero handle first to allow comparisons */
4676 memset(fh, 0, sizeof(*fh));
4677
4678 status = decode_op_hdr(xdr, OP_GETFH);
4679 if (status)
4680 return status;
4681
4682 p = xdr_inline_decode(xdr, 4);
4683 if (unlikely(!p))
4684 goto out_overflow;
4685 len = be32_to_cpup(p);
4686 if (len > NFS4_FHSIZE)
4687 return -EIO;
4688 fh->size = len;
4689 p = xdr_inline_decode(xdr, len);
4690 if (unlikely(!p))
4691 goto out_overflow;
4692 memcpy(fh->data, p, len);
4693 return 0;
4694 out_overflow:
4695 print_overflow_msg(__func__, xdr);
4696 return -EIO;
4697 }
4698
4699 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4700 {
4701 int status;
4702
4703 status = decode_op_hdr(xdr, OP_LINK);
4704 if (status)
4705 return status;
4706 return decode_change_info(xdr, cinfo);
4707 }
4708
4709 /*
4710 * We create the owner, so we know a proper owner.id length is 4.
4711 */
4712 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4713 {
4714 uint64_t offset, length, clientid;
4715 __be32 *p;
4716 uint32_t namelen, type;
4717
4718 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4719 if (unlikely(!p))
4720 goto out_overflow;
4721 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4722 p = xdr_decode_hyper(p, &length);
4723 type = be32_to_cpup(p++); /* 4 byte read */
4724 if (fl != NULL) { /* manipulate file lock */
4725 fl->fl_start = (loff_t)offset;
4726 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4727 if (length == ~(uint64_t)0)
4728 fl->fl_end = OFFSET_MAX;
4729 fl->fl_type = F_WRLCK;
4730 if (type & 1)
4731 fl->fl_type = F_RDLCK;
4732 fl->fl_pid = 0;
4733 }
4734 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4735 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4736 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4737 if (likely(p))
4738 return -NFS4ERR_DENIED;
4739 out_overflow:
4740 print_overflow_msg(__func__, xdr);
4741 return -EIO;
4742 }
4743
4744 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4745 {
4746 int status;
4747
4748 status = decode_op_hdr(xdr, OP_LOCK);
4749 if (status == -EIO)
4750 goto out;
4751 if (status == 0) {
4752 status = decode_stateid(xdr, &res->stateid);
4753 if (unlikely(status))
4754 goto out;
4755 } else if (status == -NFS4ERR_DENIED)
4756 status = decode_lock_denied(xdr, NULL);
4757 if (res->open_seqid != NULL)
4758 nfs_increment_open_seqid(status, res->open_seqid);
4759 nfs_increment_lock_seqid(status, res->lock_seqid);
4760 out:
4761 return status;
4762 }
4763
4764 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4765 {
4766 int status;
4767 status = decode_op_hdr(xdr, OP_LOCKT);
4768 if (status == -NFS4ERR_DENIED)
4769 return decode_lock_denied(xdr, res->denied);
4770 return status;
4771 }
4772
4773 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4774 {
4775 int status;
4776
4777 status = decode_op_hdr(xdr, OP_LOCKU);
4778 if (status != -EIO)
4779 nfs_increment_lock_seqid(status, res->seqid);
4780 if (status == 0)
4781 status = decode_stateid(xdr, &res->stateid);
4782 return status;
4783 }
4784
4785 static int decode_release_lockowner(struct xdr_stream *xdr)
4786 {
4787 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4788 }
4789
4790 static int decode_lookup(struct xdr_stream *xdr)
4791 {
4792 return decode_op_hdr(xdr, OP_LOOKUP);
4793 }
4794
4795 /* This is too sick! */
4796 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4797 {
4798 __be32 *p;
4799 uint32_t limit_type, nblocks, blocksize;
4800
4801 p = xdr_inline_decode(xdr, 12);
4802 if (unlikely(!p))
4803 goto out_overflow;
4804 limit_type = be32_to_cpup(p++);
4805 switch (limit_type) {
4806 case 1:
4807 xdr_decode_hyper(p, maxsize);
4808 break;
4809 case 2:
4810 nblocks = be32_to_cpup(p++);
4811 blocksize = be32_to_cpup(p);
4812 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4813 }
4814 return 0;
4815 out_overflow:
4816 print_overflow_msg(__func__, xdr);
4817 return -EIO;
4818 }
4819
4820 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4821 {
4822 __be32 *p;
4823 uint32_t delegation_type;
4824 int status;
4825
4826 p = xdr_inline_decode(xdr, 4);
4827 if (unlikely(!p))
4828 goto out_overflow;
4829 delegation_type = be32_to_cpup(p);
4830 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4831 res->delegation_type = 0;
4832 return 0;
4833 }
4834 status = decode_stateid(xdr, &res->delegation);
4835 if (unlikely(status))
4836 return status;
4837 p = xdr_inline_decode(xdr, 4);
4838 if (unlikely(!p))
4839 goto out_overflow;
4840 res->do_recall = be32_to_cpup(p);
4841
4842 switch (delegation_type) {
4843 case NFS4_OPEN_DELEGATE_READ:
4844 res->delegation_type = FMODE_READ;
4845 break;
4846 case NFS4_OPEN_DELEGATE_WRITE:
4847 res->delegation_type = FMODE_WRITE|FMODE_READ;
4848 if (decode_space_limit(xdr, &res->maxsize) < 0)
4849 return -EIO;
4850 }
4851 return decode_ace(xdr, NULL, res->server->nfs_client);
4852 out_overflow:
4853 print_overflow_msg(__func__, xdr);
4854 return -EIO;
4855 }
4856
4857 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4858 {
4859 __be32 *p;
4860 uint32_t savewords, bmlen, i;
4861 int status;
4862
4863 status = decode_op_hdr(xdr, OP_OPEN);
4864 if (status != -EIO)
4865 nfs_increment_open_seqid(status, res->seqid);
4866 if (!status)
4867 status = decode_stateid(xdr, &res->stateid);
4868 if (unlikely(status))
4869 return status;
4870
4871 decode_change_info(xdr, &res->cinfo);
4872
4873 p = xdr_inline_decode(xdr, 8);
4874 if (unlikely(!p))
4875 goto out_overflow;
4876 res->rflags = be32_to_cpup(p++);
4877 bmlen = be32_to_cpup(p);
4878 if (bmlen > 10)
4879 goto xdr_error;
4880
4881 p = xdr_inline_decode(xdr, bmlen << 2);
4882 if (unlikely(!p))
4883 goto out_overflow;
4884 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4885 for (i = 0; i < savewords; ++i)
4886 res->attrset[i] = be32_to_cpup(p++);
4887 for (; i < NFS4_BITMAP_SIZE; i++)
4888 res->attrset[i] = 0;
4889
4890 return decode_delegation(xdr, res);
4891 xdr_error:
4892 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4893 return -EIO;
4894 out_overflow:
4895 print_overflow_msg(__func__, xdr);
4896 return -EIO;
4897 }
4898
4899 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4900 {
4901 int status;
4902
4903 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4904 if (status != -EIO)
4905 nfs_increment_open_seqid(status, res->seqid);
4906 if (!status)
4907 status = decode_stateid(xdr, &res->stateid);
4908 return status;
4909 }
4910
4911 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4912 {
4913 int status;
4914
4915 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4916 if (status != -EIO)
4917 nfs_increment_open_seqid(status, res->seqid);
4918 if (!status)
4919 status = decode_stateid(xdr, &res->stateid);
4920 return status;
4921 }
4922
4923 static int decode_putfh(struct xdr_stream *xdr)
4924 {
4925 return decode_op_hdr(xdr, OP_PUTFH);
4926 }
4927
4928 static int decode_putrootfh(struct xdr_stream *xdr)
4929 {
4930 return decode_op_hdr(xdr, OP_PUTROOTFH);
4931 }
4932
4933 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4934 {
4935 __be32 *p;
4936 uint32_t count, eof, recvd;
4937 int status;
4938
4939 status = decode_op_hdr(xdr, OP_READ);
4940 if (status)
4941 return status;
4942 p = xdr_inline_decode(xdr, 8);
4943 if (unlikely(!p))
4944 goto out_overflow;
4945 eof = be32_to_cpup(p++);
4946 count = be32_to_cpup(p);
4947 recvd = xdr_read_pages(xdr, count);
4948 if (count > recvd) {
4949 dprintk("NFS: server cheating in read reply: "
4950 "count %u > recvd %u\n", count, recvd);
4951 count = recvd;
4952 eof = 0;
4953 }
4954 res->eof = eof;
4955 res->count = count;
4956 return 0;
4957 out_overflow:
4958 print_overflow_msg(__func__, xdr);
4959 return -EIO;
4960 }
4961
4962 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4963 {
4964 int status;
4965 __be32 verf[2];
4966
4967 status = decode_op_hdr(xdr, OP_READDIR);
4968 if (!status)
4969 status = decode_verifier(xdr, readdir->verifier.data);
4970 if (unlikely(status))
4971 return status;
4972 memcpy(verf, readdir->verifier.data, sizeof(verf));
4973 dprintk("%s: verifier = %08x:%08x\n",
4974 __func__, verf[0], verf[1]);
4975 return xdr_read_pages(xdr, xdr->buf->page_len);
4976 }
4977
4978 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4979 {
4980 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4981 u32 len, recvd;
4982 __be32 *p;
4983 int status;
4984
4985 status = decode_op_hdr(xdr, OP_READLINK);
4986 if (status)
4987 return status;
4988
4989 /* Convert length of symlink */
4990 p = xdr_inline_decode(xdr, 4);
4991 if (unlikely(!p))
4992 goto out_overflow;
4993 len = be32_to_cpup(p);
4994 if (len >= rcvbuf->page_len || len <= 0) {
4995 dprintk("nfs: server returned giant symlink!\n");
4996 return -ENAMETOOLONG;
4997 }
4998 recvd = xdr_read_pages(xdr, len);
4999 if (recvd < len) {
5000 dprintk("NFS: server cheating in readlink reply: "
5001 "count %u > recvd %u\n", len, recvd);
5002 return -EIO;
5003 }
5004 /*
5005 * The XDR encode routine has set things up so that
5006 * the link text will be copied directly into the
5007 * buffer. We just have to do overflow-checking,
5008 * and and null-terminate the text (the VFS expects
5009 * null-termination).
5010 */
5011 xdr_terminate_string(rcvbuf, len);
5012 return 0;
5013 out_overflow:
5014 print_overflow_msg(__func__, xdr);
5015 return -EIO;
5016 }
5017
5018 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5019 {
5020 int status;
5021
5022 status = decode_op_hdr(xdr, OP_REMOVE);
5023 if (status)
5024 goto out;
5025 status = decode_change_info(xdr, cinfo);
5026 out:
5027 return status;
5028 }
5029
5030 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5031 struct nfs4_change_info *new_cinfo)
5032 {
5033 int status;
5034
5035 status = decode_op_hdr(xdr, OP_RENAME);
5036 if (status)
5037 goto out;
5038 if ((status = decode_change_info(xdr, old_cinfo)))
5039 goto out;
5040 status = decode_change_info(xdr, new_cinfo);
5041 out:
5042 return status;
5043 }
5044
5045 static int decode_renew(struct xdr_stream *xdr)
5046 {
5047 return decode_op_hdr(xdr, OP_RENEW);
5048 }
5049
5050 static int
5051 decode_restorefh(struct xdr_stream *xdr)
5052 {
5053 return decode_op_hdr(xdr, OP_RESTOREFH);
5054 }
5055
5056 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5057 struct nfs_getaclres *res)
5058 {
5059 unsigned int savep;
5060 uint32_t attrlen,
5061 bitmap[3] = {0};
5062 int status;
5063 unsigned int pg_offset;
5064
5065 res->acl_len = 0;
5066 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5067 goto out;
5068
5069 xdr_enter_page(xdr, xdr->buf->page_len);
5070
5071 /* Calculate the offset of the page data */
5072 pg_offset = xdr->buf->head[0].iov_len;
5073
5074 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5075 goto out;
5076 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5077 goto out;
5078
5079 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5080 return -EIO;
5081 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5082
5083 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5084 * are stored with the acl data to handle the problem of
5085 * variable length bitmaps.*/
5086 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5087 res->acl_len = attrlen;
5088
5089 /* Check for receive buffer overflow */
5090 if (res->acl_len > (xdr->nwords << 2) ||
5091 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5092 res->acl_flags |= NFS4_ACL_TRUNC;
5093 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5094 attrlen, xdr->nwords << 2);
5095 }
5096 } else
5097 status = -EOPNOTSUPP;
5098
5099 out:
5100 return status;
5101 }
5102
5103 static int
5104 decode_savefh(struct xdr_stream *xdr)
5105 {
5106 return decode_op_hdr(xdr, OP_SAVEFH);
5107 }
5108
5109 static int decode_setattr(struct xdr_stream *xdr)
5110 {
5111 __be32 *p;
5112 uint32_t bmlen;
5113 int status;
5114
5115 status = decode_op_hdr(xdr, OP_SETATTR);
5116 if (status)
5117 return status;
5118 p = xdr_inline_decode(xdr, 4);
5119 if (unlikely(!p))
5120 goto out_overflow;
5121 bmlen = be32_to_cpup(p);
5122 p = xdr_inline_decode(xdr, bmlen << 2);
5123 if (likely(p))
5124 return 0;
5125 out_overflow:
5126 print_overflow_msg(__func__, xdr);
5127 return -EIO;
5128 }
5129
5130 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5131 {
5132 __be32 *p;
5133 uint32_t opnum;
5134 int32_t nfserr;
5135
5136 p = xdr_inline_decode(xdr, 8);
5137 if (unlikely(!p))
5138 goto out_overflow;
5139 opnum = be32_to_cpup(p++);
5140 if (opnum != OP_SETCLIENTID) {
5141 dprintk("nfs: decode_setclientid: Server returned operation"
5142 " %d\n", opnum);
5143 return -EIO;
5144 }
5145 nfserr = be32_to_cpup(p);
5146 if (nfserr == NFS_OK) {
5147 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5148 if (unlikely(!p))
5149 goto out_overflow;
5150 p = xdr_decode_hyper(p, &res->clientid);
5151 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5152 } else if (nfserr == NFSERR_CLID_INUSE) {
5153 uint32_t len;
5154
5155 /* skip netid string */
5156 p = xdr_inline_decode(xdr, 4);
5157 if (unlikely(!p))
5158 goto out_overflow;
5159 len = be32_to_cpup(p);
5160 p = xdr_inline_decode(xdr, len);
5161 if (unlikely(!p))
5162 goto out_overflow;
5163
5164 /* skip uaddr string */
5165 p = xdr_inline_decode(xdr, 4);
5166 if (unlikely(!p))
5167 goto out_overflow;
5168 len = be32_to_cpup(p);
5169 p = xdr_inline_decode(xdr, len);
5170 if (unlikely(!p))
5171 goto out_overflow;
5172 return -NFSERR_CLID_INUSE;
5173 } else
5174 return nfs4_stat_to_errno(nfserr);
5175
5176 return 0;
5177 out_overflow:
5178 print_overflow_msg(__func__, xdr);
5179 return -EIO;
5180 }
5181
5182 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5183 {
5184 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5185 }
5186
5187 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5188 {
5189 __be32 *p;
5190 int status;
5191
5192 status = decode_op_hdr(xdr, OP_WRITE);
5193 if (status)
5194 return status;
5195
5196 p = xdr_inline_decode(xdr, 8);
5197 if (unlikely(!p))
5198 goto out_overflow;
5199 res->count = be32_to_cpup(p++);
5200 res->verf->committed = be32_to_cpup(p++);
5201 return decode_write_verifier(xdr, &res->verf->verifier);
5202 out_overflow:
5203 print_overflow_msg(__func__, xdr);
5204 return -EIO;
5205 }
5206
5207 static int decode_delegreturn(struct xdr_stream *xdr)
5208 {
5209 return decode_op_hdr(xdr, OP_DELEGRETURN);
5210 }
5211
5212 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5213 {
5214 __be32 *p;
5215
5216 p = xdr_inline_decode(xdr, 4);
5217 if (unlikely(!p))
5218 goto out_overflow;
5219 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5220 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5221 goto out_err;
5222
5223 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5224 if (unlikely(!p))
5225 goto out_overflow;
5226 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5227
5228 p = xdr_inline_decode(xdr, 8);
5229 if (unlikely(!p))
5230 goto out_overflow;
5231 flavor->gss.qop4 = be32_to_cpup(p++);
5232 flavor->gss.service = be32_to_cpup(p);
5233
5234 return 0;
5235
5236 out_overflow:
5237 print_overflow_msg(__func__, xdr);
5238 return -EIO;
5239 out_err:
5240 return -EINVAL;
5241 }
5242
5243 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5244 {
5245 struct nfs4_secinfo_flavor *sec_flavor;
5246 int status;
5247 __be32 *p;
5248 int i, num_flavors;
5249
5250 p = xdr_inline_decode(xdr, 4);
5251 if (unlikely(!p))
5252 goto out_overflow;
5253
5254 res->flavors->num_flavors = 0;
5255 num_flavors = be32_to_cpup(p);
5256
5257 for (i = 0; i < num_flavors; i++) {
5258 sec_flavor = &res->flavors->flavors[i];
5259 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5260 break;
5261
5262 p = xdr_inline_decode(xdr, 4);
5263 if (unlikely(!p))
5264 goto out_overflow;
5265 sec_flavor->flavor = be32_to_cpup(p);
5266
5267 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5268 status = decode_secinfo_gss(xdr, sec_flavor);
5269 if (status)
5270 goto out;
5271 }
5272 res->flavors->num_flavors++;
5273 }
5274
5275 status = 0;
5276 out:
5277 return status;
5278 out_overflow:
5279 print_overflow_msg(__func__, xdr);
5280 return -EIO;
5281 }
5282
5283 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5284 {
5285 int status = decode_op_hdr(xdr, OP_SECINFO);
5286 if (status)
5287 return status;
5288 return decode_secinfo_common(xdr, res);
5289 }
5290
5291 #if defined(CONFIG_NFS_V4_1)
5292 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5293 {
5294 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5295 if (status)
5296 return status;
5297 return decode_secinfo_common(xdr, res);
5298 }
5299
5300 static int decode_exchange_id(struct xdr_stream *xdr,
5301 struct nfs41_exchange_id_res *res)
5302 {
5303 __be32 *p;
5304 uint32_t dummy;
5305 char *dummy_str;
5306 int status;
5307 uint32_t impl_id_count;
5308
5309 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5310 if (status)
5311 return status;
5312
5313 p = xdr_inline_decode(xdr, 8);
5314 if (unlikely(!p))
5315 goto out_overflow;
5316 xdr_decode_hyper(p, &res->clientid);
5317 p = xdr_inline_decode(xdr, 12);
5318 if (unlikely(!p))
5319 goto out_overflow;
5320 res->seqid = be32_to_cpup(p++);
5321 res->flags = be32_to_cpup(p++);
5322
5323 /* We ask for SP4_NONE */
5324 dummy = be32_to_cpup(p);
5325 if (dummy != SP4_NONE)
5326 return -EIO;
5327
5328 /* server_owner4.so_minor_id */
5329 p = xdr_inline_decode(xdr, 8);
5330 if (unlikely(!p))
5331 goto out_overflow;
5332 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5333
5334 /* server_owner4.so_major_id */
5335 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5336 if (unlikely(status))
5337 return status;
5338 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5339 return -EIO;
5340 memcpy(res->server_owner->major_id, dummy_str, dummy);
5341 res->server_owner->major_id_sz = dummy;
5342
5343 /* server_scope4 */
5344 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5345 if (unlikely(status))
5346 return status;
5347 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5348 return -EIO;
5349 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5350 res->server_scope->server_scope_sz = dummy;
5351
5352 /* Implementation Id */
5353 p = xdr_inline_decode(xdr, 4);
5354 if (unlikely(!p))
5355 goto out_overflow;
5356 impl_id_count = be32_to_cpup(p++);
5357
5358 if (impl_id_count) {
5359 /* nii_domain */
5360 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5361 if (unlikely(status))
5362 return status;
5363 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5364 return -EIO;
5365 memcpy(res->impl_id->domain, dummy_str, dummy);
5366
5367 /* nii_name */
5368 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5369 if (unlikely(status))
5370 return status;
5371 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5372 return -EIO;
5373 memcpy(res->impl_id->name, dummy_str, dummy);
5374
5375 /* nii_date */
5376 p = xdr_inline_decode(xdr, 12);
5377 if (unlikely(!p))
5378 goto out_overflow;
5379 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5380 res->impl_id->date.nseconds = be32_to_cpup(p);
5381
5382 /* if there's more than one entry, ignore the rest */
5383 }
5384 return 0;
5385 out_overflow:
5386 print_overflow_msg(__func__, xdr);
5387 return -EIO;
5388 }
5389
5390 static int decode_chan_attrs(struct xdr_stream *xdr,
5391 struct nfs4_channel_attrs *attrs)
5392 {
5393 __be32 *p;
5394 u32 nr_attrs, val;
5395
5396 p = xdr_inline_decode(xdr, 28);
5397 if (unlikely(!p))
5398 goto out_overflow;
5399 val = be32_to_cpup(p++); /* headerpadsz */
5400 if (val)
5401 return -EINVAL; /* no support for header padding yet */
5402 attrs->max_rqst_sz = be32_to_cpup(p++);
5403 attrs->max_resp_sz = be32_to_cpup(p++);
5404 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5405 attrs->max_ops = be32_to_cpup(p++);
5406 attrs->max_reqs = be32_to_cpup(p++);
5407 nr_attrs = be32_to_cpup(p);
5408 if (unlikely(nr_attrs > 1)) {
5409 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5410 "count %u\n", __func__, nr_attrs);
5411 return -EINVAL;
5412 }
5413 if (nr_attrs == 1) {
5414 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5415 if (unlikely(!p))
5416 goto out_overflow;
5417 }
5418 return 0;
5419 out_overflow:
5420 print_overflow_msg(__func__, xdr);
5421 return -EIO;
5422 }
5423
5424 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5425 {
5426 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5427 }
5428
5429 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5430 struct nfs41_bind_conn_to_session_res *res)
5431 {
5432 __be32 *p;
5433 int status;
5434
5435 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5436 if (!status)
5437 status = decode_sessionid(xdr, &res->session->sess_id);
5438 if (unlikely(status))
5439 return status;
5440
5441 /* dir flags, rdma mode bool */
5442 p = xdr_inline_decode(xdr, 8);
5443 if (unlikely(!p))
5444 goto out_overflow;
5445
5446 res->dir = be32_to_cpup(p++);
5447 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5448 return -EIO;
5449 if (be32_to_cpup(p) == 0)
5450 res->use_conn_in_rdma_mode = false;
5451 else
5452 res->use_conn_in_rdma_mode = true;
5453
5454 return 0;
5455 out_overflow:
5456 print_overflow_msg(__func__, xdr);
5457 return -EIO;
5458 }
5459
5460 static int decode_create_session(struct xdr_stream *xdr,
5461 struct nfs41_create_session_res *res)
5462 {
5463 __be32 *p;
5464 int status;
5465 struct nfs_client *clp = res->client;
5466 struct nfs4_session *session = clp->cl_session;
5467
5468 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5469 if (!status)
5470 status = decode_sessionid(xdr, &session->sess_id);
5471 if (unlikely(status))
5472 return status;
5473
5474 /* seqid, flags */
5475 p = xdr_inline_decode(xdr, 8);
5476 if (unlikely(!p))
5477 goto out_overflow;
5478 clp->cl_seqid = be32_to_cpup(p++);
5479 session->flags = be32_to_cpup(p);
5480
5481 /* Channel attributes */
5482 status = decode_chan_attrs(xdr, &session->fc_attrs);
5483 if (!status)
5484 status = decode_chan_attrs(xdr, &session->bc_attrs);
5485 return status;
5486 out_overflow:
5487 print_overflow_msg(__func__, xdr);
5488 return -EIO;
5489 }
5490
5491 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5492 {
5493 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5494 }
5495
5496 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5497 {
5498 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5499 }
5500
5501 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5502 {
5503 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5504 }
5505 #endif /* CONFIG_NFS_V4_1 */
5506
5507 static int decode_sequence(struct xdr_stream *xdr,
5508 struct nfs4_sequence_res *res,
5509 struct rpc_rqst *rqstp)
5510 {
5511 #if defined(CONFIG_NFS_V4_1)
5512 struct nfs4_session *session;
5513 struct nfs4_sessionid id;
5514 u32 dummy;
5515 int status;
5516 __be32 *p;
5517
5518 if (res->sr_slot == NULL)
5519 return 0;
5520
5521 status = decode_op_hdr(xdr, OP_SEQUENCE);
5522 if (!status)
5523 status = decode_sessionid(xdr, &id);
5524 if (unlikely(status))
5525 goto out_err;
5526
5527 /*
5528 * If the server returns different values for sessionID, slotID or
5529 * sequence number, the server is looney tunes.
5530 */
5531 status = -EREMOTEIO;
5532 session = res->sr_slot->table->session;
5533
5534 if (memcmp(id.data, session->sess_id.data,
5535 NFS4_MAX_SESSIONID_LEN)) {
5536 dprintk("%s Invalid session id\n", __func__);
5537 goto out_err;
5538 }
5539
5540 p = xdr_inline_decode(xdr, 20);
5541 if (unlikely(!p))
5542 goto out_overflow;
5543
5544 /* seqid */
5545 dummy = be32_to_cpup(p++);
5546 if (dummy != res->sr_slot->seq_nr) {
5547 dprintk("%s Invalid sequence number\n", __func__);
5548 goto out_err;
5549 }
5550 /* slot id */
5551 dummy = be32_to_cpup(p++);
5552 if (dummy != res->sr_slot->slot_nr) {
5553 dprintk("%s Invalid slot id\n", __func__);
5554 goto out_err;
5555 }
5556 /* highest slot id */
5557 res->sr_highest_slotid = be32_to_cpup(p++);
5558 /* target highest slot id */
5559 res->sr_target_highest_slotid = be32_to_cpup(p++);
5560 /* result flags */
5561 res->sr_status_flags = be32_to_cpup(p);
5562 status = 0;
5563 out_err:
5564 res->sr_status = status;
5565 return status;
5566 out_overflow:
5567 print_overflow_msg(__func__, xdr);
5568 status = -EIO;
5569 goto out_err;
5570 #else /* CONFIG_NFS_V4_1 */
5571 return 0;
5572 #endif /* CONFIG_NFS_V4_1 */
5573 }
5574
5575 #if defined(CONFIG_NFS_V4_1)
5576 /*
5577 * TODO: Need to handle case when EOF != true;
5578 */
5579 static int decode_getdevicelist(struct xdr_stream *xdr,
5580 struct pnfs_devicelist *res)
5581 {
5582 __be32 *p;
5583 int status, i;
5584 nfs4_verifier verftemp;
5585
5586 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5587 if (status)
5588 return status;
5589
5590 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5591 if (unlikely(!p))
5592 goto out_overflow;
5593
5594 /* TODO: Skip cookie for now */
5595 p += 2;
5596
5597 /* Read verifier */
5598 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5599
5600 res->num_devs = be32_to_cpup(p);
5601
5602 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5603
5604 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5605 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5606 __func__, res->num_devs);
5607 return -EIO;
5608 }
5609
5610 p = xdr_inline_decode(xdr,
5611 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5612 if (unlikely(!p))
5613 goto out_overflow;
5614 for (i = 0; i < res->num_devs; i++)
5615 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5616 NFS4_DEVICEID4_SIZE);
5617 res->eof = be32_to_cpup(p);
5618 return 0;
5619 out_overflow:
5620 print_overflow_msg(__func__, xdr);
5621 return -EIO;
5622 }
5623
5624 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5625 struct pnfs_device *pdev)
5626 {
5627 __be32 *p;
5628 uint32_t len, type;
5629 int status;
5630
5631 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5632 if (status) {
5633 if (status == -ETOOSMALL) {
5634 p = xdr_inline_decode(xdr, 4);
5635 if (unlikely(!p))
5636 goto out_overflow;
5637 pdev->mincount = be32_to_cpup(p);
5638 dprintk("%s: Min count too small. mincnt = %u\n",
5639 __func__, pdev->mincount);
5640 }
5641 return status;
5642 }
5643
5644 p = xdr_inline_decode(xdr, 8);
5645 if (unlikely(!p))
5646 goto out_overflow;
5647 type = be32_to_cpup(p++);
5648 if (type != pdev->layout_type) {
5649 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5650 __func__, pdev->layout_type, type);
5651 return -EINVAL;
5652 }
5653 /*
5654 * Get the length of the opaque device_addr4. xdr_read_pages places
5655 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5656 * and places the remaining xdr data in xdr_buf->tail
5657 */
5658 pdev->mincount = be32_to_cpup(p);
5659 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5660 goto out_overflow;
5661
5662 /* Parse notification bitmap, verifying that it is zero. */
5663 p = xdr_inline_decode(xdr, 4);
5664 if (unlikely(!p))
5665 goto out_overflow;
5666 len = be32_to_cpup(p);
5667 if (len) {
5668 uint32_t i;
5669
5670 p = xdr_inline_decode(xdr, 4 * len);
5671 if (unlikely(!p))
5672 goto out_overflow;
5673 for (i = 0; i < len; i++, p++) {
5674 if (be32_to_cpup(p)) {
5675 dprintk("%s: notifications not supported\n",
5676 __func__);
5677 return -EIO;
5678 }
5679 }
5680 }
5681 return 0;
5682 out_overflow:
5683 print_overflow_msg(__func__, xdr);
5684 return -EIO;
5685 }
5686
5687 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5688 struct nfs4_layoutget_res *res)
5689 {
5690 __be32 *p;
5691 int status;
5692 u32 layout_count;
5693 u32 recvd;
5694
5695 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5696 if (status)
5697 return status;
5698 p = xdr_inline_decode(xdr, 4);
5699 if (unlikely(!p))
5700 goto out_overflow;
5701 res->return_on_close = be32_to_cpup(p);
5702 decode_stateid(xdr, &res->stateid);
5703 p = xdr_inline_decode(xdr, 4);
5704 if (unlikely(!p))
5705 goto out_overflow;
5706 layout_count = be32_to_cpup(p);
5707 if (!layout_count) {
5708 dprintk("%s: server responded with empty layout array\n",
5709 __func__);
5710 return -EINVAL;
5711 }
5712
5713 p = xdr_inline_decode(xdr, 28);
5714 if (unlikely(!p))
5715 goto out_overflow;
5716 p = xdr_decode_hyper(p, &res->range.offset);
5717 p = xdr_decode_hyper(p, &res->range.length);
5718 res->range.iomode = be32_to_cpup(p++);
5719 res->type = be32_to_cpup(p++);
5720 res->layoutp->len = be32_to_cpup(p);
5721
5722 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5723 __func__,
5724 (unsigned long)res->range.offset,
5725 (unsigned long)res->range.length,
5726 res->range.iomode,
5727 res->type,
5728 res->layoutp->len);
5729
5730 recvd = xdr_read_pages(xdr, res->layoutp->len);
5731 if (res->layoutp->len > recvd) {
5732 dprintk("NFS: server cheating in layoutget reply: "
5733 "layout len %u > recvd %u\n",
5734 res->layoutp->len, recvd);
5735 return -EINVAL;
5736 }
5737
5738 if (layout_count > 1) {
5739 /* We only handle a length one array at the moment. Any
5740 * further entries are just ignored. Note that this means
5741 * the client may see a response that is less than the
5742 * minimum it requested.
5743 */
5744 dprintk("%s: server responded with %d layouts, dropping tail\n",
5745 __func__, layout_count);
5746 }
5747
5748 return 0;
5749 out_overflow:
5750 print_overflow_msg(__func__, xdr);
5751 return -EIO;
5752 }
5753
5754 static int decode_layoutreturn(struct xdr_stream *xdr,
5755 struct nfs4_layoutreturn_res *res)
5756 {
5757 __be32 *p;
5758 int status;
5759
5760 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5761 if (status)
5762 return status;
5763 p = xdr_inline_decode(xdr, 4);
5764 if (unlikely(!p))
5765 goto out_overflow;
5766 res->lrs_present = be32_to_cpup(p);
5767 if (res->lrs_present)
5768 status = decode_stateid(xdr, &res->stateid);
5769 return status;
5770 out_overflow:
5771 print_overflow_msg(__func__, xdr);
5772 return -EIO;
5773 }
5774
5775 static int decode_layoutcommit(struct xdr_stream *xdr,
5776 struct rpc_rqst *req,
5777 struct nfs4_layoutcommit_res *res)
5778 {
5779 __be32 *p;
5780 __u32 sizechanged;
5781 int status;
5782
5783 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5784 res->status = status;
5785 if (status)
5786 return status;
5787
5788 p = xdr_inline_decode(xdr, 4);
5789 if (unlikely(!p))
5790 goto out_overflow;
5791 sizechanged = be32_to_cpup(p);
5792
5793 if (sizechanged) {
5794 /* throw away new size */
5795 p = xdr_inline_decode(xdr, 8);
5796 if (unlikely(!p))
5797 goto out_overflow;
5798 }
5799 return 0;
5800 out_overflow:
5801 print_overflow_msg(__func__, xdr);
5802 return -EIO;
5803 }
5804
5805 static int decode_test_stateid(struct xdr_stream *xdr,
5806 struct nfs41_test_stateid_res *res)
5807 {
5808 __be32 *p;
5809 int status;
5810 int num_res;
5811
5812 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5813 if (status)
5814 return status;
5815
5816 p = xdr_inline_decode(xdr, 4);
5817 if (unlikely(!p))
5818 goto out_overflow;
5819 num_res = be32_to_cpup(p++);
5820 if (num_res != 1)
5821 goto out;
5822
5823 p = xdr_inline_decode(xdr, 4);
5824 if (unlikely(!p))
5825 goto out_overflow;
5826 res->status = be32_to_cpup(p++);
5827
5828 return status;
5829 out_overflow:
5830 print_overflow_msg(__func__, xdr);
5831 out:
5832 return -EIO;
5833 }
5834
5835 static int decode_free_stateid(struct xdr_stream *xdr,
5836 struct nfs41_free_stateid_res *res)
5837 {
5838 __be32 *p;
5839 int status;
5840
5841 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5842 if (status)
5843 return status;
5844
5845 p = xdr_inline_decode(xdr, 4);
5846 if (unlikely(!p))
5847 goto out_overflow;
5848 res->status = be32_to_cpup(p++);
5849 return res->status;
5850 out_overflow:
5851 print_overflow_msg(__func__, xdr);
5852 return -EIO;
5853 }
5854 #endif /* CONFIG_NFS_V4_1 */
5855
5856 /*
5857 * END OF "GENERIC" DECODE ROUTINES.
5858 */
5859
5860 /*
5861 * Decode OPEN_DOWNGRADE response
5862 */
5863 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5864 struct xdr_stream *xdr,
5865 struct nfs_closeres *res)
5866 {
5867 struct compound_hdr hdr;
5868 int status;
5869
5870 status = decode_compound_hdr(xdr, &hdr);
5871 if (status)
5872 goto out;
5873 status = decode_sequence(xdr, &res->seq_res, rqstp);
5874 if (status)
5875 goto out;
5876 status = decode_putfh(xdr);
5877 if (status)
5878 goto out;
5879 status = decode_open_downgrade(xdr, res);
5880 if (status != 0)
5881 goto out;
5882 decode_getfattr(xdr, res->fattr, res->server);
5883 out:
5884 return status;
5885 }
5886
5887 /*
5888 * Decode ACCESS response
5889 */
5890 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5891 struct nfs4_accessres *res)
5892 {
5893 struct compound_hdr hdr;
5894 int status;
5895
5896 status = decode_compound_hdr(xdr, &hdr);
5897 if (status)
5898 goto out;
5899 status = decode_sequence(xdr, &res->seq_res, rqstp);
5900 if (status)
5901 goto out;
5902 status = decode_putfh(xdr);
5903 if (status != 0)
5904 goto out;
5905 status = decode_access(xdr, &res->supported, &res->access);
5906 if (status != 0)
5907 goto out;
5908 decode_getfattr(xdr, res->fattr, res->server);
5909 out:
5910 return status;
5911 }
5912
5913 /*
5914 * Decode LOOKUP response
5915 */
5916 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5917 struct nfs4_lookup_res *res)
5918 {
5919 struct compound_hdr hdr;
5920 int status;
5921
5922 status = decode_compound_hdr(xdr, &hdr);
5923 if (status)
5924 goto out;
5925 status = decode_sequence(xdr, &res->seq_res, rqstp);
5926 if (status)
5927 goto out;
5928 status = decode_putfh(xdr);
5929 if (status)
5930 goto out;
5931 status = decode_lookup(xdr);
5932 if (status)
5933 goto out;
5934 status = decode_getfh(xdr, res->fh);
5935 if (status)
5936 goto out;
5937 status = decode_getfattr(xdr, res->fattr, res->server);
5938 out:
5939 return status;
5940 }
5941
5942 /*
5943 * Decode LOOKUP_ROOT response
5944 */
5945 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5946 struct xdr_stream *xdr,
5947 struct nfs4_lookup_res *res)
5948 {
5949 struct compound_hdr hdr;
5950 int status;
5951
5952 status = decode_compound_hdr(xdr, &hdr);
5953 if (status)
5954 goto out;
5955 status = decode_sequence(xdr, &res->seq_res, rqstp);
5956 if (status)
5957 goto out;
5958 status = decode_putrootfh(xdr);
5959 if (status)
5960 goto out;
5961 status = decode_getfh(xdr, res->fh);
5962 if (status == 0)
5963 status = decode_getfattr(xdr, res->fattr, res->server);
5964 out:
5965 return status;
5966 }
5967
5968 /*
5969 * Decode REMOVE response
5970 */
5971 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5972 struct nfs_removeres *res)
5973 {
5974 struct compound_hdr hdr;
5975 int status;
5976
5977 status = decode_compound_hdr(xdr, &hdr);
5978 if (status)
5979 goto out;
5980 status = decode_sequence(xdr, &res->seq_res, rqstp);
5981 if (status)
5982 goto out;
5983 status = decode_putfh(xdr);
5984 if (status)
5985 goto out;
5986 status = decode_remove(xdr, &res->cinfo);
5987 out:
5988 return status;
5989 }
5990
5991 /*
5992 * Decode RENAME response
5993 */
5994 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5995 struct nfs_renameres *res)
5996 {
5997 struct compound_hdr hdr;
5998 int status;
5999
6000 status = decode_compound_hdr(xdr, &hdr);
6001 if (status)
6002 goto out;
6003 status = decode_sequence(xdr, &res->seq_res, rqstp);
6004 if (status)
6005 goto out;
6006 status = decode_putfh(xdr);
6007 if (status)
6008 goto out;
6009 status = decode_savefh(xdr);
6010 if (status)
6011 goto out;
6012 status = decode_putfh(xdr);
6013 if (status)
6014 goto out;
6015 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6016 out:
6017 return status;
6018 }
6019
6020 /*
6021 * Decode LINK response
6022 */
6023 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6024 struct nfs4_link_res *res)
6025 {
6026 struct compound_hdr hdr;
6027 int status;
6028
6029 status = decode_compound_hdr(xdr, &hdr);
6030 if (status)
6031 goto out;
6032 status = decode_sequence(xdr, &res->seq_res, rqstp);
6033 if (status)
6034 goto out;
6035 status = decode_putfh(xdr);
6036 if (status)
6037 goto out;
6038 status = decode_savefh(xdr);
6039 if (status)
6040 goto out;
6041 status = decode_putfh(xdr);
6042 if (status)
6043 goto out;
6044 status = decode_link(xdr, &res->cinfo);
6045 if (status)
6046 goto out;
6047 /*
6048 * Note order: OP_LINK leaves the directory as the current
6049 * filehandle.
6050 */
6051 status = decode_restorefh(xdr);
6052 if (status)
6053 goto out;
6054 decode_getfattr(xdr, res->fattr, res->server);
6055 out:
6056 return status;
6057 }
6058
6059 /*
6060 * Decode CREATE response
6061 */
6062 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6063 struct nfs4_create_res *res)
6064 {
6065 struct compound_hdr hdr;
6066 int status;
6067
6068 status = decode_compound_hdr(xdr, &hdr);
6069 if (status)
6070 goto out;
6071 status = decode_sequence(xdr, &res->seq_res, rqstp);
6072 if (status)
6073 goto out;
6074 status = decode_putfh(xdr);
6075 if (status)
6076 goto out;
6077 status = decode_create(xdr, &res->dir_cinfo);
6078 if (status)
6079 goto out;
6080 status = decode_getfh(xdr, res->fh);
6081 if (status)
6082 goto out;
6083 decode_getfattr(xdr, res->fattr, res->server);
6084 out:
6085 return status;
6086 }
6087
6088 /*
6089 * Decode SYMLINK response
6090 */
6091 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6092 struct nfs4_create_res *res)
6093 {
6094 return nfs4_xdr_dec_create(rqstp, xdr, res);
6095 }
6096
6097 /*
6098 * Decode GETATTR response
6099 */
6100 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6101 struct nfs4_getattr_res *res)
6102 {
6103 struct compound_hdr hdr;
6104 int status;
6105
6106 status = decode_compound_hdr(xdr, &hdr);
6107 if (status)
6108 goto out;
6109 status = decode_sequence(xdr, &res->seq_res, rqstp);
6110 if (status)
6111 goto out;
6112 status = decode_putfh(xdr);
6113 if (status)
6114 goto out;
6115 status = decode_getfattr(xdr, res->fattr, res->server);
6116 out:
6117 return status;
6118 }
6119
6120 /*
6121 * Encode an SETACL request
6122 */
6123 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6124 struct nfs_setaclargs *args)
6125 {
6126 struct compound_hdr hdr = {
6127 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6128 };
6129
6130 encode_compound_hdr(xdr, req, &hdr);
6131 encode_sequence(xdr, &args->seq_args, &hdr);
6132 encode_putfh(xdr, args->fh, &hdr);
6133 encode_setacl(xdr, args, &hdr);
6134 encode_nops(&hdr);
6135 }
6136
6137 /*
6138 * Decode SETACL response
6139 */
6140 static int
6141 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6142 struct nfs_setaclres *res)
6143 {
6144 struct compound_hdr hdr;
6145 int status;
6146
6147 status = decode_compound_hdr(xdr, &hdr);
6148 if (status)
6149 goto out;
6150 status = decode_sequence(xdr, &res->seq_res, rqstp);
6151 if (status)
6152 goto out;
6153 status = decode_putfh(xdr);
6154 if (status)
6155 goto out;
6156 status = decode_setattr(xdr);
6157 out:
6158 return status;
6159 }
6160
6161 /*
6162 * Decode GETACL response
6163 */
6164 static int
6165 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6166 struct nfs_getaclres *res)
6167 {
6168 struct compound_hdr hdr;
6169 int status;
6170
6171 if (res->acl_scratch != NULL) {
6172 void *p = page_address(res->acl_scratch);
6173 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6174 }
6175 status = decode_compound_hdr(xdr, &hdr);
6176 if (status)
6177 goto out;
6178 status = decode_sequence(xdr, &res->seq_res, rqstp);
6179 if (status)
6180 goto out;
6181 status = decode_putfh(xdr);
6182 if (status)
6183 goto out;
6184 status = decode_getacl(xdr, rqstp, res);
6185
6186 out:
6187 return status;
6188 }
6189
6190 /*
6191 * Decode CLOSE response
6192 */
6193 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6194 struct nfs_closeres *res)
6195 {
6196 struct compound_hdr hdr;
6197 int status;
6198
6199 status = decode_compound_hdr(xdr, &hdr);
6200 if (status)
6201 goto out;
6202 status = decode_sequence(xdr, &res->seq_res, rqstp);
6203 if (status)
6204 goto out;
6205 status = decode_putfh(xdr);
6206 if (status)
6207 goto out;
6208 status = decode_close(xdr, res);
6209 if (status != 0)
6210 goto out;
6211 /*
6212 * Note: Server may do delete on close for this file
6213 * in which case the getattr call will fail with
6214 * an ESTALE error. Shouldn't be a problem,
6215 * though, since fattr->valid will remain unset.
6216 */
6217 decode_getfattr(xdr, res->fattr, res->server);
6218 out:
6219 return status;
6220 }
6221
6222 /*
6223 * Decode OPEN response
6224 */
6225 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6226 struct nfs_openres *res)
6227 {
6228 struct compound_hdr hdr;
6229 int status;
6230
6231 status = decode_compound_hdr(xdr, &hdr);
6232 if (status)
6233 goto out;
6234 status = decode_sequence(xdr, &res->seq_res, rqstp);
6235 if (status)
6236 goto out;
6237 status = decode_putfh(xdr);
6238 if (status)
6239 goto out;
6240 status = decode_open(xdr, res);
6241 if (status)
6242 goto out;
6243 status = decode_getfh(xdr, &res->fh);
6244 if (status)
6245 goto out;
6246 if (res->access_request)
6247 decode_access(xdr, &res->access_supported, &res->access_result);
6248 decode_getfattr(xdr, res->f_attr, res->server);
6249 out:
6250 return status;
6251 }
6252
6253 /*
6254 * Decode OPEN_CONFIRM response
6255 */
6256 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6257 struct xdr_stream *xdr,
6258 struct nfs_open_confirmres *res)
6259 {
6260 struct compound_hdr hdr;
6261 int status;
6262
6263 status = decode_compound_hdr(xdr, &hdr);
6264 if (status)
6265 goto out;
6266 status = decode_putfh(xdr);
6267 if (status)
6268 goto out;
6269 status = decode_open_confirm(xdr, res);
6270 out:
6271 return status;
6272 }
6273
6274 /*
6275 * Decode OPEN response
6276 */
6277 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6278 struct xdr_stream *xdr,
6279 struct nfs_openres *res)
6280 {
6281 struct compound_hdr hdr;
6282 int status;
6283
6284 status = decode_compound_hdr(xdr, &hdr);
6285 if (status)
6286 goto out;
6287 status = decode_sequence(xdr, &res->seq_res, rqstp);
6288 if (status)
6289 goto out;
6290 status = decode_putfh(xdr);
6291 if (status)
6292 goto out;
6293 status = decode_open(xdr, res);
6294 if (status)
6295 goto out;
6296 if (res->access_request)
6297 decode_access(xdr, &res->access_supported, &res->access_result);
6298 decode_getfattr(xdr, res->f_attr, res->server);
6299 out:
6300 return status;
6301 }
6302
6303 /*
6304 * Decode SETATTR response
6305 */
6306 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6307 struct xdr_stream *xdr,
6308 struct nfs_setattrres *res)
6309 {
6310 struct compound_hdr hdr;
6311 int status;
6312
6313 status = decode_compound_hdr(xdr, &hdr);
6314 if (status)
6315 goto out;
6316 status = decode_sequence(xdr, &res->seq_res, rqstp);
6317 if (status)
6318 goto out;
6319 status = decode_putfh(xdr);
6320 if (status)
6321 goto out;
6322 status = decode_setattr(xdr);
6323 if (status)
6324 goto out;
6325 decode_getfattr(xdr, res->fattr, res->server);
6326 out:
6327 return status;
6328 }
6329
6330 /*
6331 * Decode LOCK response
6332 */
6333 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6334 struct nfs_lock_res *res)
6335 {
6336 struct compound_hdr hdr;
6337 int status;
6338
6339 status = decode_compound_hdr(xdr, &hdr);
6340 if (status)
6341 goto out;
6342 status = decode_sequence(xdr, &res->seq_res, rqstp);
6343 if (status)
6344 goto out;
6345 status = decode_putfh(xdr);
6346 if (status)
6347 goto out;
6348 status = decode_lock(xdr, res);
6349 out:
6350 return status;
6351 }
6352
6353 /*
6354 * Decode LOCKT response
6355 */
6356 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6357 struct nfs_lockt_res *res)
6358 {
6359 struct compound_hdr hdr;
6360 int status;
6361
6362 status = decode_compound_hdr(xdr, &hdr);
6363 if (status)
6364 goto out;
6365 status = decode_sequence(xdr, &res->seq_res, rqstp);
6366 if (status)
6367 goto out;
6368 status = decode_putfh(xdr);
6369 if (status)
6370 goto out;
6371 status = decode_lockt(xdr, res);
6372 out:
6373 return status;
6374 }
6375
6376 /*
6377 * Decode LOCKU response
6378 */
6379 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6380 struct nfs_locku_res *res)
6381 {
6382 struct compound_hdr hdr;
6383 int status;
6384
6385 status = decode_compound_hdr(xdr, &hdr);
6386 if (status)
6387 goto out;
6388 status = decode_sequence(xdr, &res->seq_res, rqstp);
6389 if (status)
6390 goto out;
6391 status = decode_putfh(xdr);
6392 if (status)
6393 goto out;
6394 status = decode_locku(xdr, res);
6395 out:
6396 return status;
6397 }
6398
6399 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6400 struct xdr_stream *xdr, void *dummy)
6401 {
6402 struct compound_hdr hdr;
6403 int status;
6404
6405 status = decode_compound_hdr(xdr, &hdr);
6406 if (!status)
6407 status = decode_release_lockowner(xdr);
6408 return status;
6409 }
6410
6411 /*
6412 * Decode READLINK response
6413 */
6414 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6415 struct xdr_stream *xdr,
6416 struct nfs4_readlink_res *res)
6417 {
6418 struct compound_hdr hdr;
6419 int status;
6420
6421 status = decode_compound_hdr(xdr, &hdr);
6422 if (status)
6423 goto out;
6424 status = decode_sequence(xdr, &res->seq_res, rqstp);
6425 if (status)
6426 goto out;
6427 status = decode_putfh(xdr);
6428 if (status)
6429 goto out;
6430 status = decode_readlink(xdr, rqstp);
6431 out:
6432 return status;
6433 }
6434
6435 /*
6436 * Decode READDIR response
6437 */
6438 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6439 struct nfs4_readdir_res *res)
6440 {
6441 struct compound_hdr hdr;
6442 int status;
6443
6444 status = decode_compound_hdr(xdr, &hdr);
6445 if (status)
6446 goto out;
6447 status = decode_sequence(xdr, &res->seq_res, rqstp);
6448 if (status)
6449 goto out;
6450 status = decode_putfh(xdr);
6451 if (status)
6452 goto out;
6453 status = decode_readdir(xdr, rqstp, res);
6454 out:
6455 return status;
6456 }
6457
6458 /*
6459 * Decode Read response
6460 */
6461 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6462 struct nfs_readres *res)
6463 {
6464 struct compound_hdr hdr;
6465 int status;
6466
6467 status = decode_compound_hdr(xdr, &hdr);
6468 if (status)
6469 goto out;
6470 status = decode_sequence(xdr, &res->seq_res, rqstp);
6471 if (status)
6472 goto out;
6473 status = decode_putfh(xdr);
6474 if (status)
6475 goto out;
6476 status = decode_read(xdr, rqstp, res);
6477 if (!status)
6478 status = res->count;
6479 out:
6480 return status;
6481 }
6482
6483 /*
6484 * Decode WRITE response
6485 */
6486 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6487 struct nfs_writeres *res)
6488 {
6489 struct compound_hdr hdr;
6490 int status;
6491
6492 status = decode_compound_hdr(xdr, &hdr);
6493 if (status)
6494 goto out;
6495 status = decode_sequence(xdr, &res->seq_res, rqstp);
6496 if (status)
6497 goto out;
6498 status = decode_putfh(xdr);
6499 if (status)
6500 goto out;
6501 status = decode_write(xdr, res);
6502 if (status)
6503 goto out;
6504 if (res->fattr)
6505 decode_getfattr(xdr, res->fattr, res->server);
6506 if (!status)
6507 status = res->count;
6508 out:
6509 return status;
6510 }
6511
6512 /*
6513 * Decode COMMIT response
6514 */
6515 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6516 struct nfs_commitres *res)
6517 {
6518 struct compound_hdr hdr;
6519 int status;
6520
6521 status = decode_compound_hdr(xdr, &hdr);
6522 if (status)
6523 goto out;
6524 status = decode_sequence(xdr, &res->seq_res, rqstp);
6525 if (status)
6526 goto out;
6527 status = decode_putfh(xdr);
6528 if (status)
6529 goto out;
6530 status = decode_commit(xdr, res);
6531 out:
6532 return status;
6533 }
6534
6535 /*
6536 * Decode FSINFO response
6537 */
6538 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6539 struct nfs4_fsinfo_res *res)
6540 {
6541 struct compound_hdr hdr;
6542 int status;
6543
6544 status = decode_compound_hdr(xdr, &hdr);
6545 if (!status)
6546 status = decode_sequence(xdr, &res->seq_res, req);
6547 if (!status)
6548 status = decode_putfh(xdr);
6549 if (!status)
6550 status = decode_fsinfo(xdr, res->fsinfo);
6551 return status;
6552 }
6553
6554 /*
6555 * Decode PATHCONF response
6556 */
6557 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6558 struct nfs4_pathconf_res *res)
6559 {
6560 struct compound_hdr hdr;
6561 int status;
6562
6563 status = decode_compound_hdr(xdr, &hdr);
6564 if (!status)
6565 status = decode_sequence(xdr, &res->seq_res, req);
6566 if (!status)
6567 status = decode_putfh(xdr);
6568 if (!status)
6569 status = decode_pathconf(xdr, res->pathconf);
6570 return status;
6571 }
6572
6573 /*
6574 * Decode STATFS response
6575 */
6576 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6577 struct nfs4_statfs_res *res)
6578 {
6579 struct compound_hdr hdr;
6580 int status;
6581
6582 status = decode_compound_hdr(xdr, &hdr);
6583 if (!status)
6584 status = decode_sequence(xdr, &res->seq_res, req);
6585 if (!status)
6586 status = decode_putfh(xdr);
6587 if (!status)
6588 status = decode_statfs(xdr, res->fsstat);
6589 return status;
6590 }
6591
6592 /*
6593 * Decode GETATTR_BITMAP response
6594 */
6595 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6596 struct xdr_stream *xdr,
6597 struct nfs4_server_caps_res *res)
6598 {
6599 struct compound_hdr hdr;
6600 int status;
6601
6602 status = decode_compound_hdr(xdr, &hdr);
6603 if (status)
6604 goto out;
6605 status = decode_sequence(xdr, &res->seq_res, req);
6606 if (status)
6607 goto out;
6608 status = decode_putfh(xdr);
6609 if (status)
6610 goto out;
6611 status = decode_server_caps(xdr, res);
6612 out:
6613 return status;
6614 }
6615
6616 /*
6617 * Decode RENEW response
6618 */
6619 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6620 void *__unused)
6621 {
6622 struct compound_hdr hdr;
6623 int status;
6624
6625 status = decode_compound_hdr(xdr, &hdr);
6626 if (!status)
6627 status = decode_renew(xdr);
6628 return status;
6629 }
6630
6631 /*
6632 * Decode SETCLIENTID response
6633 */
6634 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6635 struct xdr_stream *xdr,
6636 struct nfs4_setclientid_res *res)
6637 {
6638 struct compound_hdr hdr;
6639 int status;
6640
6641 status = decode_compound_hdr(xdr, &hdr);
6642 if (!status)
6643 status = decode_setclientid(xdr, res);
6644 return status;
6645 }
6646
6647 /*
6648 * Decode SETCLIENTID_CONFIRM response
6649 */
6650 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6651 struct xdr_stream *xdr,
6652 struct nfs_fsinfo *fsinfo)
6653 {
6654 struct compound_hdr hdr;
6655 int status;
6656
6657 status = decode_compound_hdr(xdr, &hdr);
6658 if (!status)
6659 status = decode_setclientid_confirm(xdr);
6660 if (!status)
6661 status = decode_putrootfh(xdr);
6662 if (!status)
6663 status = decode_fsinfo(xdr, fsinfo);
6664 return status;
6665 }
6666
6667 /*
6668 * Decode DELEGRETURN response
6669 */
6670 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6671 struct xdr_stream *xdr,
6672 struct nfs4_delegreturnres *res)
6673 {
6674 struct compound_hdr hdr;
6675 int status;
6676
6677 status = decode_compound_hdr(xdr, &hdr);
6678 if (status)
6679 goto out;
6680 status = decode_sequence(xdr, &res->seq_res, rqstp);
6681 if (status)
6682 goto out;
6683 status = decode_putfh(xdr);
6684 if (status != 0)
6685 goto out;
6686 status = decode_getfattr(xdr, res->fattr, res->server);
6687 if (status != 0)
6688 goto out;
6689 status = decode_delegreturn(xdr);
6690 out:
6691 return status;
6692 }
6693
6694 /*
6695 * Decode FS_LOCATIONS response
6696 */
6697 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6698 struct xdr_stream *xdr,
6699 struct nfs4_fs_locations_res *res)
6700 {
6701 struct compound_hdr hdr;
6702 int status;
6703
6704 status = decode_compound_hdr(xdr, &hdr);
6705 if (status)
6706 goto out;
6707 status = decode_sequence(xdr, &res->seq_res, req);
6708 if (status)
6709 goto out;
6710 status = decode_putfh(xdr);
6711 if (status)
6712 goto out;
6713 status = decode_lookup(xdr);
6714 if (status)
6715 goto out;
6716 xdr_enter_page(xdr, PAGE_SIZE);
6717 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6718 NULL, res->fs_locations,
6719 res->fs_locations->server);
6720 out:
6721 return status;
6722 }
6723
6724 /*
6725 * Decode SECINFO response
6726 */
6727 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6728 struct xdr_stream *xdr,
6729 struct nfs4_secinfo_res *res)
6730 {
6731 struct compound_hdr hdr;
6732 int status;
6733
6734 status = decode_compound_hdr(xdr, &hdr);
6735 if (status)
6736 goto out;
6737 status = decode_sequence(xdr, &res->seq_res, rqstp);
6738 if (status)
6739 goto out;
6740 status = decode_putfh(xdr);
6741 if (status)
6742 goto out;
6743 status = decode_secinfo(xdr, res);
6744 out:
6745 return status;
6746 }
6747
6748 #if defined(CONFIG_NFS_V4_1)
6749 /*
6750 * Decode BIND_CONN_TO_SESSION response
6751 */
6752 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6753 struct xdr_stream *xdr,
6754 void *res)
6755 {
6756 struct compound_hdr hdr;
6757 int status;
6758
6759 status = decode_compound_hdr(xdr, &hdr);
6760 if (!status)
6761 status = decode_bind_conn_to_session(xdr, res);
6762 return status;
6763 }
6764
6765 /*
6766 * Decode EXCHANGE_ID response
6767 */
6768 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6769 struct xdr_stream *xdr,
6770 void *res)
6771 {
6772 struct compound_hdr hdr;
6773 int status;
6774
6775 status = decode_compound_hdr(xdr, &hdr);
6776 if (!status)
6777 status = decode_exchange_id(xdr, res);
6778 return status;
6779 }
6780
6781 /*
6782 * Decode CREATE_SESSION response
6783 */
6784 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6785 struct xdr_stream *xdr,
6786 struct nfs41_create_session_res *res)
6787 {
6788 struct compound_hdr hdr;
6789 int status;
6790
6791 status = decode_compound_hdr(xdr, &hdr);
6792 if (!status)
6793 status = decode_create_session(xdr, res);
6794 return status;
6795 }
6796
6797 /*
6798 * Decode DESTROY_SESSION response
6799 */
6800 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6801 struct xdr_stream *xdr,
6802 void *res)
6803 {
6804 struct compound_hdr hdr;
6805 int status;
6806
6807 status = decode_compound_hdr(xdr, &hdr);
6808 if (!status)
6809 status = decode_destroy_session(xdr, res);
6810 return status;
6811 }
6812
6813 /*
6814 * Decode DESTROY_CLIENTID response
6815 */
6816 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6817 struct xdr_stream *xdr,
6818 void *res)
6819 {
6820 struct compound_hdr hdr;
6821 int status;
6822
6823 status = decode_compound_hdr(xdr, &hdr);
6824 if (!status)
6825 status = decode_destroy_clientid(xdr, res);
6826 return status;
6827 }
6828
6829 /*
6830 * Decode SEQUENCE response
6831 */
6832 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6833 struct xdr_stream *xdr,
6834 struct nfs4_sequence_res *res)
6835 {
6836 struct compound_hdr hdr;
6837 int status;
6838
6839 status = decode_compound_hdr(xdr, &hdr);
6840 if (!status)
6841 status = decode_sequence(xdr, res, rqstp);
6842 return status;
6843 }
6844
6845 /*
6846 * Decode GET_LEASE_TIME response
6847 */
6848 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6849 struct xdr_stream *xdr,
6850 struct nfs4_get_lease_time_res *res)
6851 {
6852 struct compound_hdr hdr;
6853 int status;
6854
6855 status = decode_compound_hdr(xdr, &hdr);
6856 if (!status)
6857 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6858 if (!status)
6859 status = decode_putrootfh(xdr);
6860 if (!status)
6861 status = decode_fsinfo(xdr, res->lr_fsinfo);
6862 return status;
6863 }
6864
6865 /*
6866 * Decode RECLAIM_COMPLETE response
6867 */
6868 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6869 struct xdr_stream *xdr,
6870 struct nfs41_reclaim_complete_res *res)
6871 {
6872 struct compound_hdr hdr;
6873 int status;
6874
6875 status = decode_compound_hdr(xdr, &hdr);
6876 if (!status)
6877 status = decode_sequence(xdr, &res->seq_res, rqstp);
6878 if (!status)
6879 status = decode_reclaim_complete(xdr, (void *)NULL);
6880 return status;
6881 }
6882
6883 /*
6884 * Decode GETDEVICELIST response
6885 */
6886 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6887 struct xdr_stream *xdr,
6888 struct nfs4_getdevicelist_res *res)
6889 {
6890 struct compound_hdr hdr;
6891 int status;
6892
6893 dprintk("encoding getdevicelist!\n");
6894
6895 status = decode_compound_hdr(xdr, &hdr);
6896 if (status != 0)
6897 goto out;
6898 status = decode_sequence(xdr, &res->seq_res, rqstp);
6899 if (status != 0)
6900 goto out;
6901 status = decode_putfh(xdr);
6902 if (status != 0)
6903 goto out;
6904 status = decode_getdevicelist(xdr, res->devlist);
6905 out:
6906 return status;
6907 }
6908
6909 /*
6910 * Decode GETDEVINFO response
6911 */
6912 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6913 struct xdr_stream *xdr,
6914 struct nfs4_getdeviceinfo_res *res)
6915 {
6916 struct compound_hdr hdr;
6917 int status;
6918
6919 status = decode_compound_hdr(xdr, &hdr);
6920 if (status != 0)
6921 goto out;
6922 status = decode_sequence(xdr, &res->seq_res, rqstp);
6923 if (status != 0)
6924 goto out;
6925 status = decode_getdeviceinfo(xdr, res->pdev);
6926 out:
6927 return status;
6928 }
6929
6930 /*
6931 * Decode LAYOUTGET response
6932 */
6933 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6934 struct xdr_stream *xdr,
6935 struct nfs4_layoutget_res *res)
6936 {
6937 struct compound_hdr hdr;
6938 int status;
6939
6940 status = decode_compound_hdr(xdr, &hdr);
6941 if (status)
6942 goto out;
6943 status = decode_sequence(xdr, &res->seq_res, rqstp);
6944 if (status)
6945 goto out;
6946 status = decode_putfh(xdr);
6947 if (status)
6948 goto out;
6949 status = decode_layoutget(xdr, rqstp, res);
6950 out:
6951 return status;
6952 }
6953
6954 /*
6955 * Decode LAYOUTRETURN response
6956 */
6957 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6958 struct xdr_stream *xdr,
6959 struct nfs4_layoutreturn_res *res)
6960 {
6961 struct compound_hdr hdr;
6962 int status;
6963
6964 status = decode_compound_hdr(xdr, &hdr);
6965 if (status)
6966 goto out;
6967 status = decode_sequence(xdr, &res->seq_res, rqstp);
6968 if (status)
6969 goto out;
6970 status = decode_putfh(xdr);
6971 if (status)
6972 goto out;
6973 status = decode_layoutreturn(xdr, res);
6974 out:
6975 return status;
6976 }
6977
6978 /*
6979 * Decode LAYOUTCOMMIT response
6980 */
6981 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6982 struct xdr_stream *xdr,
6983 struct nfs4_layoutcommit_res *res)
6984 {
6985 struct compound_hdr hdr;
6986 int status;
6987
6988 status = decode_compound_hdr(xdr, &hdr);
6989 if (status)
6990 goto out;
6991 status = decode_sequence(xdr, &res->seq_res, rqstp);
6992 if (status)
6993 goto out;
6994 status = decode_putfh(xdr);
6995 if (status)
6996 goto out;
6997 status = decode_layoutcommit(xdr, rqstp, res);
6998 if (status)
6999 goto out;
7000 decode_getfattr(xdr, res->fattr, res->server);
7001 out:
7002 return status;
7003 }
7004
7005 /*
7006 * Decode SECINFO_NO_NAME response
7007 */
7008 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7009 struct xdr_stream *xdr,
7010 struct nfs4_secinfo_res *res)
7011 {
7012 struct compound_hdr hdr;
7013 int status;
7014
7015 status = decode_compound_hdr(xdr, &hdr);
7016 if (status)
7017 goto out;
7018 status = decode_sequence(xdr, &res->seq_res, rqstp);
7019 if (status)
7020 goto out;
7021 status = decode_putrootfh(xdr);
7022 if (status)
7023 goto out;
7024 status = decode_secinfo_no_name(xdr, res);
7025 out:
7026 return status;
7027 }
7028
7029 /*
7030 * Decode TEST_STATEID response
7031 */
7032 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7033 struct xdr_stream *xdr,
7034 struct nfs41_test_stateid_res *res)
7035 {
7036 struct compound_hdr hdr;
7037 int status;
7038
7039 status = decode_compound_hdr(xdr, &hdr);
7040 if (status)
7041 goto out;
7042 status = decode_sequence(xdr, &res->seq_res, rqstp);
7043 if (status)
7044 goto out;
7045 status = decode_test_stateid(xdr, res);
7046 out:
7047 return status;
7048 }
7049
7050 /*
7051 * Decode FREE_STATEID response
7052 */
7053 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7054 struct xdr_stream *xdr,
7055 struct nfs41_free_stateid_res *res)
7056 {
7057 struct compound_hdr hdr;
7058 int status;
7059
7060 status = decode_compound_hdr(xdr, &hdr);
7061 if (status)
7062 goto out;
7063 status = decode_sequence(xdr, &res->seq_res, rqstp);
7064 if (status)
7065 goto out;
7066 status = decode_free_stateid(xdr, res);
7067 out:
7068 return status;
7069 }
7070 #endif /* CONFIG_NFS_V4_1 */
7071
7072 /**
7073 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7074 * the local page cache.
7075 * @xdr: XDR stream where entry resides
7076 * @entry: buffer to fill in with entry data
7077 * @plus: boolean indicating whether this should be a readdirplus entry
7078 *
7079 * Returns zero if successful, otherwise a negative errno value is
7080 * returned.
7081 *
7082 * This function is not invoked during READDIR reply decoding, but
7083 * rather whenever an application invokes the getdents(2) system call
7084 * on a directory already in our cache.
7085 */
7086 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7087 int plus)
7088 {
7089 unsigned int savep;
7090 uint32_t bitmap[3] = {0};
7091 uint32_t len;
7092 __be32 *p = xdr_inline_decode(xdr, 4);
7093 if (unlikely(!p))
7094 goto out_overflow;
7095 if (*p == xdr_zero) {
7096 p = xdr_inline_decode(xdr, 4);
7097 if (unlikely(!p))
7098 goto out_overflow;
7099 if (*p == xdr_zero)
7100 return -EAGAIN;
7101 entry->eof = 1;
7102 return -EBADCOOKIE;
7103 }
7104
7105 p = xdr_inline_decode(xdr, 12);
7106 if (unlikely(!p))
7107 goto out_overflow;
7108 entry->prev_cookie = entry->cookie;
7109 p = xdr_decode_hyper(p, &entry->cookie);
7110 entry->len = be32_to_cpup(p);
7111
7112 p = xdr_inline_decode(xdr, entry->len);
7113 if (unlikely(!p))
7114 goto out_overflow;
7115 entry->name = (const char *) p;
7116
7117 /*
7118 * In case the server doesn't return an inode number,
7119 * we fake one here. (We don't use inode number 0,
7120 * since glibc seems to choke on it...)
7121 */
7122 entry->ino = 1;
7123 entry->fattr->valid = 0;
7124
7125 if (decode_attr_bitmap(xdr, bitmap) < 0)
7126 goto out_overflow;
7127
7128 if (decode_attr_length(xdr, &len, &savep) < 0)
7129 goto out_overflow;
7130
7131 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7132 NULL, entry->server) < 0)
7133 goto out_overflow;
7134 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7135 entry->ino = entry->fattr->mounted_on_fileid;
7136 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7137 entry->ino = entry->fattr->fileid;
7138
7139 entry->d_type = DT_UNKNOWN;
7140 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7141 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7142
7143 return 0;
7144
7145 out_overflow:
7146 print_overflow_msg(__func__, xdr);
7147 return -EAGAIN;
7148 }
7149
7150 /*
7151 * We need to translate between nfs status return values and
7152 * the local errno values which may not be the same.
7153 */
7154 static struct {
7155 int stat;
7156 int errno;
7157 } nfs_errtbl[] = {
7158 { NFS4_OK, 0 },
7159 { NFS4ERR_PERM, -EPERM },
7160 { NFS4ERR_NOENT, -ENOENT },
7161 { NFS4ERR_IO, -errno_NFSERR_IO},
7162 { NFS4ERR_NXIO, -ENXIO },
7163 { NFS4ERR_ACCESS, -EACCES },
7164 { NFS4ERR_EXIST, -EEXIST },
7165 { NFS4ERR_XDEV, -EXDEV },
7166 { NFS4ERR_NOTDIR, -ENOTDIR },
7167 { NFS4ERR_ISDIR, -EISDIR },
7168 { NFS4ERR_INVAL, -EINVAL },
7169 { NFS4ERR_FBIG, -EFBIG },
7170 { NFS4ERR_NOSPC, -ENOSPC },
7171 { NFS4ERR_ROFS, -EROFS },
7172 { NFS4ERR_MLINK, -EMLINK },
7173 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7174 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7175 { NFS4ERR_DQUOT, -EDQUOT },
7176 { NFS4ERR_STALE, -ESTALE },
7177 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7178 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7179 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7180 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7181 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7182 { NFS4ERR_BADTYPE, -EBADTYPE },
7183 { NFS4ERR_LOCKED, -EAGAIN },
7184 { NFS4ERR_SYMLINK, -ELOOP },
7185 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7186 { NFS4ERR_DEADLOCK, -EDEADLK },
7187 { -1, -EIO }
7188 };
7189
7190 /*
7191 * Convert an NFS error code to a local one.
7192 * This one is used jointly by NFSv2 and NFSv3.
7193 */
7194 static int
7195 nfs4_stat_to_errno(int stat)
7196 {
7197 int i;
7198 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7199 if (nfs_errtbl[i].stat == stat)
7200 return nfs_errtbl[i].errno;
7201 }
7202 if (stat <= 10000 || stat > 10100) {
7203 /* The server is looney tunes. */
7204 return -EREMOTEIO;
7205 }
7206 /* If we cannot translate the error, the recovery routines should
7207 * handle it.
7208 * Note: remaining NFSv4 error codes have values > 10000, so should
7209 * not conflict with native Linux error codes.
7210 */
7211 return -stat;
7212 }
7213
7214 #define PROC(proc, argtype, restype) \
7215 [NFSPROC4_CLNT_##proc] = { \
7216 .p_proc = NFSPROC4_COMPOUND, \
7217 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7218 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7219 .p_arglen = NFS4_##argtype##_sz, \
7220 .p_replen = NFS4_##restype##_sz, \
7221 .p_statidx = NFSPROC4_CLNT_##proc, \
7222 .p_name = #proc, \
7223 }
7224
7225 struct rpc_procinfo nfs4_procedures[] = {
7226 PROC(READ, enc_read, dec_read),
7227 PROC(WRITE, enc_write, dec_write),
7228 PROC(COMMIT, enc_commit, dec_commit),
7229 PROC(OPEN, enc_open, dec_open),
7230 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7231 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7232 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7233 PROC(CLOSE, enc_close, dec_close),
7234 PROC(SETATTR, enc_setattr, dec_setattr),
7235 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7236 PROC(RENEW, enc_renew, dec_renew),
7237 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7238 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7239 PROC(LOCK, enc_lock, dec_lock),
7240 PROC(LOCKT, enc_lockt, dec_lockt),
7241 PROC(LOCKU, enc_locku, dec_locku),
7242 PROC(ACCESS, enc_access, dec_access),
7243 PROC(GETATTR, enc_getattr, dec_getattr),
7244 PROC(LOOKUP, enc_lookup, dec_lookup),
7245 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7246 PROC(REMOVE, enc_remove, dec_remove),
7247 PROC(RENAME, enc_rename, dec_rename),
7248 PROC(LINK, enc_link, dec_link),
7249 PROC(SYMLINK, enc_symlink, dec_symlink),
7250 PROC(CREATE, enc_create, dec_create),
7251 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7252 PROC(STATFS, enc_statfs, dec_statfs),
7253 PROC(READLINK, enc_readlink, dec_readlink),
7254 PROC(READDIR, enc_readdir, dec_readdir),
7255 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7256 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7257 PROC(GETACL, enc_getacl, dec_getacl),
7258 PROC(SETACL, enc_setacl, dec_setacl),
7259 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7260 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7261 PROC(SECINFO, enc_secinfo, dec_secinfo),
7262 #if defined(CONFIG_NFS_V4_1)
7263 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7264 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7265 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7266 PROC(SEQUENCE, enc_sequence, dec_sequence),
7267 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7268 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7269 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7270 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7271 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7272 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7273 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7274 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7275 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7276 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7277 PROC(BIND_CONN_TO_SESSION,
7278 enc_bind_conn_to_session, dec_bind_conn_to_session),
7279 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7280 #endif /* CONFIG_NFS_V4_1 */
7281 };
7282
7283 const struct rpc_version nfs_version4 = {
7284 .number = 4,
7285 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7286 .procs = nfs4_procedures
7287 };
7288
7289 /*
7290 * Local variables:
7291 * c-basic-offset: 8
7292 * End:
7293 */
Linux with added FPC-III support