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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
[mirror_ubuntu-zesty-kernel.git] / fs / nfs / nfs4xdr.c
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 #define NFS4_dec_setclientid_confirm_sz \
535 (compound_decode_hdr_maxsz + \
536 decode_setclientid_confirm_maxsz)
537 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
538 encode_sequence_maxsz + \
539 encode_putfh_maxsz + \
540 encode_lock_maxsz)
541 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
542 decode_sequence_maxsz + \
543 decode_putfh_maxsz + \
544 decode_lock_maxsz)
545 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
546 encode_sequence_maxsz + \
547 encode_putfh_maxsz + \
548 encode_lockt_maxsz)
549 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
550 decode_sequence_maxsz + \
551 decode_putfh_maxsz + \
552 decode_lockt_maxsz)
553 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
554 encode_sequence_maxsz + \
555 encode_putfh_maxsz + \
556 encode_locku_maxsz)
557 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
558 decode_sequence_maxsz + \
559 decode_putfh_maxsz + \
560 decode_locku_maxsz)
561 #define NFS4_enc_release_lockowner_sz \
562 (compound_encode_hdr_maxsz + \
563 encode_lockowner_maxsz)
564 #define NFS4_dec_release_lockowner_sz \
565 (compound_decode_hdr_maxsz + \
566 decode_lockowner_maxsz)
567 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
570 encode_access_maxsz + \
571 encode_getattr_maxsz)
572 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
573 decode_sequence_maxsz + \
574 decode_putfh_maxsz + \
575 decode_access_maxsz + \
576 decode_getattr_maxsz)
577 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
578 encode_sequence_maxsz + \
579 encode_putfh_maxsz + \
580 encode_getattr_maxsz)
581 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
582 decode_sequence_maxsz + \
583 decode_putfh_maxsz + \
584 decode_getattr_maxsz)
585 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
586 encode_sequence_maxsz + \
587 encode_putfh_maxsz + \
588 encode_lookup_maxsz + \
589 encode_getattr_maxsz + \
590 encode_getfh_maxsz)
591 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
592 decode_sequence_maxsz + \
593 decode_putfh_maxsz + \
594 decode_lookup_maxsz + \
595 decode_getattr_maxsz + \
596 decode_getfh_maxsz)
597 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
598 encode_sequence_maxsz + \
599 encode_putrootfh_maxsz + \
600 encode_getattr_maxsz + \
601 encode_getfh_maxsz)
602 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
603 decode_sequence_maxsz + \
604 decode_putrootfh_maxsz + \
605 decode_getattr_maxsz + \
606 decode_getfh_maxsz)
607 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
608 encode_sequence_maxsz + \
609 encode_putfh_maxsz + \
610 encode_remove_maxsz)
611 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
612 decode_sequence_maxsz + \
613 decode_putfh_maxsz + \
614 decode_remove_maxsz)
615 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
616 encode_sequence_maxsz + \
617 encode_putfh_maxsz + \
618 encode_savefh_maxsz + \
619 encode_putfh_maxsz + \
620 encode_rename_maxsz)
621 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
622 decode_sequence_maxsz + \
623 decode_putfh_maxsz + \
624 decode_savefh_maxsz + \
625 decode_putfh_maxsz + \
626 decode_rename_maxsz)
627 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
628 encode_sequence_maxsz + \
629 encode_putfh_maxsz + \
630 encode_savefh_maxsz + \
631 encode_putfh_maxsz + \
632 encode_link_maxsz + \
633 encode_restorefh_maxsz + \
634 encode_getattr_maxsz)
635 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
636 decode_sequence_maxsz + \
637 decode_putfh_maxsz + \
638 decode_savefh_maxsz + \
639 decode_putfh_maxsz + \
640 decode_link_maxsz + \
641 decode_restorefh_maxsz + \
642 decode_getattr_maxsz)
643 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
644 encode_sequence_maxsz + \
645 encode_putfh_maxsz + \
646 encode_symlink_maxsz + \
647 encode_getattr_maxsz + \
648 encode_getfh_maxsz)
649 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
652 decode_symlink_maxsz + \
653 decode_getattr_maxsz + \
654 decode_getfh_maxsz)
655 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
656 encode_sequence_maxsz + \
657 encode_putfh_maxsz + \
658 encode_create_maxsz + \
659 encode_getfh_maxsz + \
660 encode_getattr_maxsz)
661 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
662 decode_sequence_maxsz + \
663 decode_putfh_maxsz + \
664 decode_create_maxsz + \
665 decode_getfh_maxsz + \
666 decode_getattr_maxsz)
667 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
668 encode_sequence_maxsz + \
669 encode_putfh_maxsz + \
670 encode_getattr_maxsz)
671 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
672 decode_sequence_maxsz + \
673 decode_putfh_maxsz + \
674 decode_getattr_maxsz)
675 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
676 encode_sequence_maxsz + \
677 encode_putfh_maxsz + \
678 encode_statfs_maxsz)
679 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
680 decode_sequence_maxsz + \
681 decode_putfh_maxsz + \
682 decode_statfs_maxsz)
683 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
684 encode_sequence_maxsz + \
685 encode_putfh_maxsz + \
686 encode_getattr_maxsz)
687 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
688 decode_sequence_maxsz + \
689 decode_putfh_maxsz + \
690 decode_getattr_maxsz)
691 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
692 encode_sequence_maxsz + \
693 encode_putfh_maxsz + \
694 encode_delegreturn_maxsz + \
695 encode_getattr_maxsz)
696 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
697 decode_sequence_maxsz + \
698 decode_delegreturn_maxsz + \
699 decode_getattr_maxsz)
700 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
701 encode_sequence_maxsz + \
702 encode_putfh_maxsz + \
703 encode_getacl_maxsz)
704 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
705 decode_sequence_maxsz + \
706 decode_putfh_maxsz + \
707 decode_getacl_maxsz)
708 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
709 encode_sequence_maxsz + \
710 encode_putfh_maxsz + \
711 encode_setacl_maxsz)
712 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
713 decode_sequence_maxsz + \
714 decode_putfh_maxsz + \
715 decode_setacl_maxsz)
716 #define NFS4_enc_fs_locations_sz \
717 (compound_encode_hdr_maxsz + \
718 encode_sequence_maxsz + \
719 encode_putfh_maxsz + \
720 encode_lookup_maxsz + \
721 encode_fs_locations_maxsz)
722 #define NFS4_dec_fs_locations_sz \
723 (compound_decode_hdr_maxsz + \
724 decode_sequence_maxsz + \
725 decode_putfh_maxsz + \
726 decode_lookup_maxsz + \
727 decode_fs_locations_maxsz)
728 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
729 encode_sequence_maxsz + \
730 encode_putfh_maxsz + \
731 encode_secinfo_maxsz)
732 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
733 decode_sequence_maxsz + \
734 decode_putfh_maxsz + \
735 decode_secinfo_maxsz)
736 #if defined(CONFIG_NFS_V4_1)
737 #define NFS4_enc_bind_conn_to_session_sz \
738 (compound_encode_hdr_maxsz + \
739 encode_bind_conn_to_session_maxsz)
740 #define NFS4_dec_bind_conn_to_session_sz \
741 (compound_decode_hdr_maxsz + \
742 decode_bind_conn_to_session_maxsz)
743 #define NFS4_enc_exchange_id_sz \
744 (compound_encode_hdr_maxsz + \
745 encode_exchange_id_maxsz)
746 #define NFS4_dec_exchange_id_sz \
747 (compound_decode_hdr_maxsz + \
748 decode_exchange_id_maxsz)
749 #define NFS4_enc_create_session_sz \
750 (compound_encode_hdr_maxsz + \
751 encode_create_session_maxsz)
752 #define NFS4_dec_create_session_sz \
753 (compound_decode_hdr_maxsz + \
754 decode_create_session_maxsz)
755 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
756 encode_destroy_session_maxsz)
757 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
758 decode_destroy_session_maxsz)
759 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
760 encode_destroy_clientid_maxsz)
761 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
762 decode_destroy_clientid_maxsz)
763 #define NFS4_enc_sequence_sz \
764 (compound_decode_hdr_maxsz + \
765 encode_sequence_maxsz)
766 #define NFS4_dec_sequence_sz \
767 (compound_decode_hdr_maxsz + \
768 decode_sequence_maxsz)
769 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
770 encode_sequence_maxsz + \
771 encode_putrootfh_maxsz + \
772 encode_fsinfo_maxsz)
773 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
774 decode_sequence_maxsz + \
775 decode_putrootfh_maxsz + \
776 decode_fsinfo_maxsz)
777 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
778 encode_sequence_maxsz + \
779 encode_reclaim_complete_maxsz)
780 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
781 decode_sequence_maxsz + \
782 decode_reclaim_complete_maxsz)
783 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
784 encode_sequence_maxsz + \
785 encode_putfh_maxsz + \
786 encode_getdevicelist_maxsz)
787 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
788 decode_sequence_maxsz + \
789 decode_putfh_maxsz + \
790 decode_getdevicelist_maxsz)
791 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
792 encode_sequence_maxsz +\
793 encode_getdeviceinfo_maxsz)
794 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
795 decode_sequence_maxsz + \
796 decode_getdeviceinfo_maxsz)
797 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
798 encode_sequence_maxsz + \
799 encode_putfh_maxsz + \
800 encode_layoutget_maxsz)
801 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
802 decode_sequence_maxsz + \
803 decode_putfh_maxsz + \
804 decode_layoutget_maxsz)
805 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
806 encode_sequence_maxsz +\
807 encode_putfh_maxsz + \
808 encode_layoutcommit_maxsz + \
809 encode_getattr_maxsz)
810 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
811 decode_sequence_maxsz + \
812 decode_putfh_maxsz + \
813 decode_layoutcommit_maxsz + \
814 decode_getattr_maxsz)
815 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
816 encode_sequence_maxsz + \
817 encode_putfh_maxsz + \
818 encode_layoutreturn_maxsz)
819 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
820 decode_sequence_maxsz + \
821 decode_putfh_maxsz + \
822 decode_layoutreturn_maxsz)
823 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
824 encode_sequence_maxsz + \
825 encode_putrootfh_maxsz +\
826 encode_secinfo_no_name_maxsz)
827 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
828 decode_sequence_maxsz + \
829 decode_putrootfh_maxsz + \
830 decode_secinfo_no_name_maxsz)
831 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
832 encode_sequence_maxsz + \
833 encode_test_stateid_maxsz)
834 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
835 decode_sequence_maxsz + \
836 decode_test_stateid_maxsz)
837 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
838 encode_sequence_maxsz + \
839 encode_free_stateid_maxsz)
840 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
841 decode_sequence_maxsz + \
842 decode_free_stateid_maxsz)
843
844 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
845 compound_encode_hdr_maxsz +
846 encode_sequence_maxsz +
847 encode_putfh_maxsz +
848 encode_getattr_maxsz) *
849 XDR_UNIT);
850
851 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
852 compound_decode_hdr_maxsz +
853 decode_sequence_maxsz +
854 decode_putfh_maxsz) *
855 XDR_UNIT);
856 #endif /* CONFIG_NFS_V4_1 */
857
858 static const umode_t nfs_type2fmt[] = {
859 [NF4BAD] = 0,
860 [NF4REG] = S_IFREG,
861 [NF4DIR] = S_IFDIR,
862 [NF4BLK] = S_IFBLK,
863 [NF4CHR] = S_IFCHR,
864 [NF4LNK] = S_IFLNK,
865 [NF4SOCK] = S_IFSOCK,
866 [NF4FIFO] = S_IFIFO,
867 [NF4ATTRDIR] = 0,
868 [NF4NAMEDATTR] = 0,
869 };
870
871 struct compound_hdr {
872 int32_t status;
873 uint32_t nops;
874 __be32 * nops_p;
875 uint32_t taglen;
876 char * tag;
877 uint32_t replen; /* expected reply words */
878 u32 minorversion;
879 };
880
881 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
882 {
883 __be32 *p = xdr_reserve_space(xdr, nbytes);
884 BUG_ON(!p);
885 return p;
886 }
887
888 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
889 {
890 __be32 *p;
891
892 p = xdr_reserve_space(xdr, len);
893 xdr_encode_opaque_fixed(p, buf, len);
894 }
895
896 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
897 {
898 __be32 *p;
899
900 p = reserve_space(xdr, 4 + len);
901 xdr_encode_opaque(p, str, len);
902 }
903
904 static void encode_uint32(struct xdr_stream *xdr, u32 n)
905 {
906 __be32 *p;
907
908 p = reserve_space(xdr, 4);
909 *p = cpu_to_be32(n);
910 }
911
912 static void encode_uint64(struct xdr_stream *xdr, u64 n)
913 {
914 __be32 *p;
915
916 p = reserve_space(xdr, 8);
917 xdr_encode_hyper(p, n);
918 }
919
920 static void encode_nfs4_seqid(struct xdr_stream *xdr,
921 const struct nfs_seqid *seqid)
922 {
923 encode_uint32(xdr, seqid->sequence->counter);
924 }
925
926 static void encode_compound_hdr(struct xdr_stream *xdr,
927 struct rpc_rqst *req,
928 struct compound_hdr *hdr)
929 {
930 __be32 *p;
931 struct rpc_auth *auth = req->rq_cred->cr_auth;
932
933 /* initialize running count of expected bytes in reply.
934 * NOTE: the replied tag SHOULD be the same is the one sent,
935 * but this is not required as a MUST for the server to do so. */
936 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
937
938 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
939 encode_string(xdr, hdr->taglen, hdr->tag);
940 p = reserve_space(xdr, 8);
941 *p++ = cpu_to_be32(hdr->minorversion);
942 hdr->nops_p = p;
943 *p = cpu_to_be32(hdr->nops);
944 }
945
946 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
947 uint32_t replen,
948 struct compound_hdr *hdr)
949 {
950 encode_uint32(xdr, op);
951 hdr->nops++;
952 hdr->replen += replen;
953 }
954
955 static void encode_nops(struct compound_hdr *hdr)
956 {
957 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
958 *hdr->nops_p = htonl(hdr->nops);
959 }
960
961 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
962 {
963 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
964 }
965
966 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
967 {
968 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
969 }
970
971 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
972 {
973 char owner_name[IDMAP_NAMESZ];
974 char owner_group[IDMAP_NAMESZ];
975 int owner_namelen = 0;
976 int owner_grouplen = 0;
977 __be32 *p;
978 __be32 *q;
979 int len;
980 uint32_t bmval0 = 0;
981 uint32_t bmval1 = 0;
982
983 /*
984 * We reserve enough space to write the entire attribute buffer at once.
985 * In the worst-case, this would be
986 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
987 * = 36 bytes, plus any contribution from variable-length fields
988 * such as owner/group.
989 */
990 len = 16;
991
992 /* Sigh */
993 if (iap->ia_valid & ATTR_SIZE)
994 len += 8;
995 if (iap->ia_valid & ATTR_MODE)
996 len += 4;
997 if (iap->ia_valid & ATTR_UID) {
998 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
999 if (owner_namelen < 0) {
1000 dprintk("nfs: couldn't resolve uid %d to string\n",
1001 from_kuid(&init_user_ns, iap->ia_uid));
1002 /* XXX */
1003 strcpy(owner_name, "nobody");
1004 owner_namelen = sizeof("nobody") - 1;
1005 /* goto out; */
1006 }
1007 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1008 }
1009 if (iap->ia_valid & ATTR_GID) {
1010 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1011 if (owner_grouplen < 0) {
1012 dprintk("nfs: couldn't resolve gid %d to string\n",
1013 from_kgid(&init_user_ns, iap->ia_gid));
1014 strcpy(owner_group, "nobody");
1015 owner_grouplen = sizeof("nobody") - 1;
1016 /* goto out; */
1017 }
1018 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1019 }
1020 if (iap->ia_valid & ATTR_ATIME_SET)
1021 len += 16;
1022 else if (iap->ia_valid & ATTR_ATIME)
1023 len += 4;
1024 if (iap->ia_valid & ATTR_MTIME_SET)
1025 len += 16;
1026 else if (iap->ia_valid & ATTR_MTIME)
1027 len += 4;
1028 p = reserve_space(xdr, len);
1029
1030 /*
1031 * We write the bitmap length now, but leave the bitmap and the attribute
1032 * buffer length to be backfilled at the end of this routine.
1033 */
1034 *p++ = cpu_to_be32(2);
1035 q = p;
1036 p += 3;
1037
1038 if (iap->ia_valid & ATTR_SIZE) {
1039 bmval0 |= FATTR4_WORD0_SIZE;
1040 p = xdr_encode_hyper(p, iap->ia_size);
1041 }
1042 if (iap->ia_valid & ATTR_MODE) {
1043 bmval1 |= FATTR4_WORD1_MODE;
1044 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1045 }
1046 if (iap->ia_valid & ATTR_UID) {
1047 bmval1 |= FATTR4_WORD1_OWNER;
1048 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1049 }
1050 if (iap->ia_valid & ATTR_GID) {
1051 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1052 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1053 }
1054 if (iap->ia_valid & ATTR_ATIME_SET) {
1055 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1056 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1057 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1058 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1059 }
1060 else if (iap->ia_valid & ATTR_ATIME) {
1061 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1062 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1063 }
1064 if (iap->ia_valid & ATTR_MTIME_SET) {
1065 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1066 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1067 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1068 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1069 }
1070 else if (iap->ia_valid & ATTR_MTIME) {
1071 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1072 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1073 }
1074
1075 /*
1076 * Now we backfill the bitmap and the attribute buffer length.
1077 */
1078 if (len != ((char *)p - (char *)q) + 4) {
1079 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1080 len, ((char *)p - (char *)q) + 4);
1081 BUG();
1082 }
1083 len = (char *)p - (char *)q - 12;
1084 *q++ = htonl(bmval0);
1085 *q++ = htonl(bmval1);
1086 *q = htonl(len);
1087
1088 /* out: */
1089 }
1090
1091 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1092 {
1093 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1094 encode_uint32(xdr, access);
1095 }
1096
1097 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1098 {
1099 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1100 encode_nfs4_seqid(xdr, arg->seqid);
1101 encode_nfs4_stateid(xdr, arg->stateid);
1102 }
1103
1104 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1105 {
1106 __be32 *p;
1107
1108 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1109 p = reserve_space(xdr, 12);
1110 p = xdr_encode_hyper(p, args->offset);
1111 *p = cpu_to_be32(args->count);
1112 }
1113
1114 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1115 {
1116 __be32 *p;
1117
1118 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1119 encode_uint32(xdr, create->ftype);
1120
1121 switch (create->ftype) {
1122 case NF4LNK:
1123 p = reserve_space(xdr, 4);
1124 *p = cpu_to_be32(create->u.symlink.len);
1125 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1126 break;
1127
1128 case NF4BLK: case NF4CHR:
1129 p = reserve_space(xdr, 8);
1130 *p++ = cpu_to_be32(create->u.device.specdata1);
1131 *p = cpu_to_be32(create->u.device.specdata2);
1132 break;
1133
1134 default:
1135 break;
1136 }
1137
1138 encode_string(xdr, create->name->len, create->name->name);
1139 encode_attrs(xdr, create->attrs, create->server);
1140 }
1141
1142 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1143 {
1144 __be32 *p;
1145
1146 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1147 p = reserve_space(xdr, 8);
1148 *p++ = cpu_to_be32(1);
1149 *p = cpu_to_be32(bitmap);
1150 }
1151
1152 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1153 {
1154 __be32 *p;
1155
1156 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1157 p = reserve_space(xdr, 12);
1158 *p++ = cpu_to_be32(2);
1159 *p++ = cpu_to_be32(bm0);
1160 *p = cpu_to_be32(bm1);
1161 }
1162
1163 static void
1164 encode_getattr_three(struct xdr_stream *xdr,
1165 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1166 struct compound_hdr *hdr)
1167 {
1168 __be32 *p;
1169
1170 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1171 if (bm2) {
1172 p = reserve_space(xdr, 16);
1173 *p++ = cpu_to_be32(3);
1174 *p++ = cpu_to_be32(bm0);
1175 *p++ = cpu_to_be32(bm1);
1176 *p = cpu_to_be32(bm2);
1177 } else if (bm1) {
1178 p = reserve_space(xdr, 12);
1179 *p++ = cpu_to_be32(2);
1180 *p++ = cpu_to_be32(bm0);
1181 *p = cpu_to_be32(bm1);
1182 } else {
1183 p = reserve_space(xdr, 8);
1184 *p++ = cpu_to_be32(1);
1185 *p = cpu_to_be32(bm0);
1186 }
1187 }
1188
1189 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1190 {
1191 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1192 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1193 }
1194
1195 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1196 const u32 *open_bitmap,
1197 struct compound_hdr *hdr)
1198 {
1199 encode_getattr_three(xdr,
1200 bitmask[0] & open_bitmap[0],
1201 bitmask[1] & open_bitmap[1],
1202 bitmask[2] & open_bitmap[2],
1203 hdr);
1204 }
1205
1206 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1207 {
1208 encode_getattr_three(xdr,
1209 bitmask[0] & nfs4_fsinfo_bitmap[0],
1210 bitmask[1] & nfs4_fsinfo_bitmap[1],
1211 bitmask[2] & nfs4_fsinfo_bitmap[2],
1212 hdr);
1213 }
1214
1215 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1216 {
1217 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1218 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1219 }
1220
1221 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1222 {
1223 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1224 }
1225
1226 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1227 {
1228 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1229 encode_string(xdr, name->len, name->name);
1230 }
1231
1232 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1233 {
1234 if (fl->fl_type == F_RDLCK)
1235 return block ? NFS4_READW_LT : NFS4_READ_LT;
1236 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1237 }
1238
1239 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1240 {
1241 if (fl->fl_end == OFFSET_MAX)
1242 return ~(uint64_t)0;
1243 return fl->fl_end - fl->fl_start + 1;
1244 }
1245
1246 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1247 {
1248 __be32 *p;
1249
1250 p = reserve_space(xdr, 32);
1251 p = xdr_encode_hyper(p, lowner->clientid);
1252 *p++ = cpu_to_be32(20);
1253 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1254 *p++ = cpu_to_be32(lowner->s_dev);
1255 xdr_encode_hyper(p, lowner->id);
1256 }
1257
1258 /*
1259 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1260 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1261 */
1262 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1263 {
1264 __be32 *p;
1265
1266 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1267 p = reserve_space(xdr, 28);
1268 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1269 *p++ = cpu_to_be32(args->reclaim);
1270 p = xdr_encode_hyper(p, args->fl->fl_start);
1271 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1272 *p = cpu_to_be32(args->new_lock_owner);
1273 if (args->new_lock_owner){
1274 encode_nfs4_seqid(xdr, args->open_seqid);
1275 encode_nfs4_stateid(xdr, args->open_stateid);
1276 encode_nfs4_seqid(xdr, args->lock_seqid);
1277 encode_lockowner(xdr, &args->lock_owner);
1278 }
1279 else {
1280 encode_nfs4_stateid(xdr, args->lock_stateid);
1281 encode_nfs4_seqid(xdr, args->lock_seqid);
1282 }
1283 }
1284
1285 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1286 {
1287 __be32 *p;
1288
1289 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1290 p = reserve_space(xdr, 20);
1291 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1292 p = xdr_encode_hyper(p, args->fl->fl_start);
1293 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1294 encode_lockowner(xdr, &args->lock_owner);
1295 }
1296
1297 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1298 {
1299 __be32 *p;
1300
1301 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1302 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1303 encode_nfs4_seqid(xdr, args->seqid);
1304 encode_nfs4_stateid(xdr, args->stateid);
1305 p = reserve_space(xdr, 16);
1306 p = xdr_encode_hyper(p, args->fl->fl_start);
1307 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1308 }
1309
1310 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1311 {
1312 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1313 encode_lockowner(xdr, lowner);
1314 }
1315
1316 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1317 {
1318 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1319 encode_string(xdr, name->len, name->name);
1320 }
1321
1322 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1323 {
1324 __be32 *p;
1325
1326 p = reserve_space(xdr, 8);
1327 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1328 case FMODE_READ:
1329 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1330 break;
1331 case FMODE_WRITE:
1332 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1333 break;
1334 case FMODE_READ|FMODE_WRITE:
1335 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1336 break;
1337 default:
1338 *p++ = cpu_to_be32(0);
1339 }
1340 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1341 }
1342
1343 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1344 {
1345 __be32 *p;
1346 /*
1347 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1348 * owner 4 = 32
1349 */
1350 encode_nfs4_seqid(xdr, arg->seqid);
1351 encode_share_access(xdr, arg->fmode);
1352 p = reserve_space(xdr, 36);
1353 p = xdr_encode_hyper(p, arg->clientid);
1354 *p++ = cpu_to_be32(24);
1355 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1356 *p++ = cpu_to_be32(arg->server->s_dev);
1357 *p++ = cpu_to_be32(arg->id.uniquifier);
1358 xdr_encode_hyper(p, arg->id.create_time);
1359 }
1360
1361 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1362 {
1363 struct iattr dummy;
1364 __be32 *p;
1365
1366 p = reserve_space(xdr, 4);
1367 switch(arg->createmode) {
1368 case NFS4_CREATE_UNCHECKED:
1369 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1370 encode_attrs(xdr, arg->u.attrs, arg->server);
1371 break;
1372 case NFS4_CREATE_GUARDED:
1373 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1374 encode_attrs(xdr, arg->u.attrs, arg->server);
1375 break;
1376 case NFS4_CREATE_EXCLUSIVE:
1377 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1378 encode_nfs4_verifier(xdr, &arg->u.verifier);
1379 break;
1380 case NFS4_CREATE_EXCLUSIVE4_1:
1381 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1382 encode_nfs4_verifier(xdr, &arg->u.verifier);
1383 dummy.ia_valid = 0;
1384 encode_attrs(xdr, &dummy, arg->server);
1385 }
1386 }
1387
1388 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1389 {
1390 __be32 *p;
1391
1392 p = reserve_space(xdr, 4);
1393 switch (arg->open_flags & O_CREAT) {
1394 case 0:
1395 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1396 break;
1397 default:
1398 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1399 encode_createmode(xdr, arg);
1400 }
1401 }
1402
1403 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1404 {
1405 __be32 *p;
1406
1407 p = reserve_space(xdr, 4);
1408 switch (delegation_type) {
1409 case 0:
1410 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1411 break;
1412 case FMODE_READ:
1413 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1414 break;
1415 case FMODE_WRITE|FMODE_READ:
1416 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1417 break;
1418 default:
1419 BUG();
1420 }
1421 }
1422
1423 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1424 {
1425 __be32 *p;
1426
1427 p = reserve_space(xdr, 4);
1428 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1429 encode_string(xdr, name->len, name->name);
1430 }
1431
1432 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1433 {
1434 __be32 *p;
1435
1436 p = reserve_space(xdr, 4);
1437 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1438 encode_delegation_type(xdr, type);
1439 }
1440
1441 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1442 {
1443 __be32 *p;
1444
1445 p = reserve_space(xdr, 4);
1446 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1447 encode_nfs4_stateid(xdr, stateid);
1448 encode_string(xdr, name->len, name->name);
1449 }
1450
1451 static inline void encode_claim_fh(struct xdr_stream *xdr)
1452 {
1453 __be32 *p;
1454
1455 p = reserve_space(xdr, 4);
1456 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1457 }
1458
1459 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1460 {
1461 __be32 *p;
1462
1463 p = reserve_space(xdr, 4);
1464 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1465 encode_nfs4_stateid(xdr, stateid);
1466 }
1467
1468 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1469 {
1470 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1471 encode_openhdr(xdr, arg);
1472 encode_opentype(xdr, arg);
1473 switch (arg->claim) {
1474 case NFS4_OPEN_CLAIM_NULL:
1475 encode_claim_null(xdr, arg->name);
1476 break;
1477 case NFS4_OPEN_CLAIM_PREVIOUS:
1478 encode_claim_previous(xdr, arg->u.delegation_type);
1479 break;
1480 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1481 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1482 break;
1483 case NFS4_OPEN_CLAIM_FH:
1484 encode_claim_fh(xdr);
1485 break;
1486 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1487 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1488 break;
1489 default:
1490 BUG();
1491 }
1492 }
1493
1494 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1495 {
1496 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1497 encode_nfs4_stateid(xdr, arg->stateid);
1498 encode_nfs4_seqid(xdr, arg->seqid);
1499 }
1500
1501 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1502 {
1503 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1504 encode_nfs4_stateid(xdr, arg->stateid);
1505 encode_nfs4_seqid(xdr, arg->seqid);
1506 encode_share_access(xdr, arg->fmode);
1507 }
1508
1509 static void
1510 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1511 {
1512 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1513 encode_string(xdr, fh->size, fh->data);
1514 }
1515
1516 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1517 {
1518 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1519 }
1520
1521 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1522 {
1523 __be32 *p;
1524
1525 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1526 encode_nfs4_stateid(xdr, &args->stateid);
1527
1528 p = reserve_space(xdr, 12);
1529 p = xdr_encode_hyper(p, args->offset);
1530 *p = cpu_to_be32(args->count);
1531 }
1532
1533 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1534 {
1535 uint32_t attrs[2] = {
1536 FATTR4_WORD0_RDATTR_ERROR,
1537 FATTR4_WORD1_MOUNTED_ON_FILEID,
1538 };
1539 uint32_t dircount = readdir->count >> 1;
1540 __be32 *p, verf[2];
1541
1542 if (readdir->plus) {
1543 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1544 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1545 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1546 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1547 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1548 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1549 dircount >>= 1;
1550 }
1551 /* Use mounted_on_fileid only if the server supports it */
1552 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1553 attrs[0] |= FATTR4_WORD0_FILEID;
1554
1555 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1556 encode_uint64(xdr, readdir->cookie);
1557 encode_nfs4_verifier(xdr, &readdir->verifier);
1558 p = reserve_space(xdr, 20);
1559 *p++ = cpu_to_be32(dircount);
1560 *p++ = cpu_to_be32(readdir->count);
1561 *p++ = cpu_to_be32(2);
1562
1563 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1564 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1565 memcpy(verf, readdir->verifier.data, sizeof(verf));
1566 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1567 __func__,
1568 (unsigned long long)readdir->cookie,
1569 verf[0], verf[1],
1570 attrs[0] & readdir->bitmask[0],
1571 attrs[1] & readdir->bitmask[1]);
1572 }
1573
1574 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1575 {
1576 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1577 }
1578
1579 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1580 {
1581 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1582 encode_string(xdr, name->len, name->name);
1583 }
1584
1585 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1586 {
1587 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1588 encode_string(xdr, oldname->len, oldname->name);
1589 encode_string(xdr, newname->len, newname->name);
1590 }
1591
1592 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1593 struct compound_hdr *hdr)
1594 {
1595 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1596 encode_uint64(xdr, clid);
1597 }
1598
1599 static void
1600 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1601 {
1602 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1603 }
1604
1605 static void
1606 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1607 {
1608 __be32 *p;
1609
1610 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1611 encode_nfs4_stateid(xdr, &zero_stateid);
1612 p = reserve_space(xdr, 2*4);
1613 *p++ = cpu_to_be32(1);
1614 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1615 p = reserve_space(xdr, 4);
1616 *p = cpu_to_be32(arg->acl_len);
1617 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1618 }
1619
1620 static void
1621 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1622 {
1623 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1624 }
1625
1626 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1627 {
1628 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1629 encode_nfs4_stateid(xdr, &arg->stateid);
1630 encode_attrs(xdr, arg->iap, server);
1631 }
1632
1633 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1634 {
1635 __be32 *p;
1636
1637 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1638 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1639
1640 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1641 p = reserve_space(xdr, 4);
1642 *p = cpu_to_be32(setclientid->sc_prog);
1643 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1644 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1645 p = reserve_space(xdr, 4);
1646 *p = cpu_to_be32(setclientid->sc_cb_ident);
1647 }
1648
1649 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1650 {
1651 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1652 decode_setclientid_confirm_maxsz, hdr);
1653 encode_uint64(xdr, arg->clientid);
1654 encode_nfs4_verifier(xdr, &arg->confirm);
1655 }
1656
1657 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1658 {
1659 __be32 *p;
1660
1661 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1662 encode_nfs4_stateid(xdr, &args->stateid);
1663
1664 p = reserve_space(xdr, 16);
1665 p = xdr_encode_hyper(p, args->offset);
1666 *p++ = cpu_to_be32(args->stable);
1667 *p = cpu_to_be32(args->count);
1668
1669 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1670 }
1671
1672 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1673 {
1674 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1675 encode_nfs4_stateid(xdr, stateid);
1676 }
1677
1678 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1679 {
1680 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1681 encode_string(xdr, name->len, name->name);
1682 }
1683
1684 #if defined(CONFIG_NFS_V4_1)
1685 /* NFSv4.1 operations */
1686 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1687 struct nfs4_session *session,
1688 struct compound_hdr *hdr)
1689 {
1690 __be32 *p;
1691
1692 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1693 decode_bind_conn_to_session_maxsz, hdr);
1694 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1695 p = xdr_reserve_space(xdr, 8);
1696 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1697 *p = 0; /* use_conn_in_rdma_mode = False */
1698 }
1699
1700 static void encode_exchange_id(struct xdr_stream *xdr,
1701 struct nfs41_exchange_id_args *args,
1702 struct compound_hdr *hdr)
1703 {
1704 __be32 *p;
1705 char impl_name[IMPL_NAME_LIMIT];
1706 int len = 0;
1707
1708 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1709 encode_nfs4_verifier(xdr, args->verifier);
1710
1711 encode_string(xdr, args->id_len, args->id);
1712
1713 p = reserve_space(xdr, 12);
1714 *p++ = cpu_to_be32(args->flags);
1715 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1716
1717 if (send_implementation_id &&
1718 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1719 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1720 <= sizeof(impl_name) + 1)
1721 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1722 utsname()->sysname, utsname()->release,
1723 utsname()->version, utsname()->machine);
1724
1725 if (len > 0) {
1726 *p = cpu_to_be32(1); /* implementation id array length=1 */
1727
1728 encode_string(xdr,
1729 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1730 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1731 encode_string(xdr, len, impl_name);
1732 /* just send zeros for nii_date - the date is in nii_name */
1733 p = reserve_space(xdr, 12);
1734 p = xdr_encode_hyper(p, 0);
1735 *p = cpu_to_be32(0);
1736 } else
1737 *p = cpu_to_be32(0); /* implementation id array length=0 */
1738 }
1739
1740 static void encode_create_session(struct xdr_stream *xdr,
1741 struct nfs41_create_session_args *args,
1742 struct compound_hdr *hdr)
1743 {
1744 __be32 *p;
1745 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1746 uint32_t len;
1747 struct nfs_client *clp = args->client;
1748 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1749 u32 max_resp_sz_cached;
1750
1751 /*
1752 * Assumes OPEN is the biggest non-idempotent compound.
1753 * 2 is the verifier.
1754 */
1755 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1756 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1757
1758 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1759 clp->cl_ipaddr);
1760
1761 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1762 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1763 p = xdr_encode_hyper(p, clp->cl_clientid);
1764 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1765 *p++ = cpu_to_be32(args->flags); /*flags */
1766
1767 /* Fore Channel */
1768 *p++ = cpu_to_be32(0); /* header padding size */
1769 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1770 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1771 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1772 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1773 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1774 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1775
1776 /* Back Channel */
1777 *p++ = cpu_to_be32(0); /* header padding size */
1778 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1779 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1780 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1781 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1782 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1783 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1784
1785 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1786 *p++ = cpu_to_be32(1);
1787 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1788
1789 /* authsys_parms rfc1831 */
1790 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1791 p = xdr_encode_opaque(p, machine_name, len);
1792 *p++ = cpu_to_be32(0); /* UID */
1793 *p++ = cpu_to_be32(0); /* GID */
1794 *p = cpu_to_be32(0); /* No more gids */
1795 }
1796
1797 static void encode_destroy_session(struct xdr_stream *xdr,
1798 struct nfs4_session *session,
1799 struct compound_hdr *hdr)
1800 {
1801 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1802 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1803 }
1804
1805 static void encode_destroy_clientid(struct xdr_stream *xdr,
1806 uint64_t clientid,
1807 struct compound_hdr *hdr)
1808 {
1809 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1810 encode_uint64(xdr, clientid);
1811 }
1812
1813 static void encode_reclaim_complete(struct xdr_stream *xdr,
1814 struct nfs41_reclaim_complete_args *args,
1815 struct compound_hdr *hdr)
1816 {
1817 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1818 encode_uint32(xdr, args->one_fs);
1819 }
1820 #endif /* CONFIG_NFS_V4_1 */
1821
1822 static void encode_sequence(struct xdr_stream *xdr,
1823 const struct nfs4_sequence_args *args,
1824 struct compound_hdr *hdr)
1825 {
1826 #if defined(CONFIG_NFS_V4_1)
1827 struct nfs4_session *session;
1828 struct nfs4_slot_table *tp;
1829 struct nfs4_slot *slot = args->sa_slot;
1830 __be32 *p;
1831
1832 if (slot == NULL)
1833 return;
1834
1835 tp = slot->table;
1836 session = tp->session;
1837
1838 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1839
1840 /*
1841 * Sessionid + seqid + slotid + max slotid + cache_this
1842 */
1843 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1844 "max_slotid=%d cache_this=%d\n",
1845 __func__,
1846 ((u32 *)session->sess_id.data)[0],
1847 ((u32 *)session->sess_id.data)[1],
1848 ((u32 *)session->sess_id.data)[2],
1849 ((u32 *)session->sess_id.data)[3],
1850 slot->seq_nr, slot->slot_nr,
1851 tp->highest_used_slotid, args->sa_cache_this);
1852 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1853 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1854 *p++ = cpu_to_be32(slot->seq_nr);
1855 *p++ = cpu_to_be32(slot->slot_nr);
1856 *p++ = cpu_to_be32(tp->highest_used_slotid);
1857 *p = cpu_to_be32(args->sa_cache_this);
1858 #endif /* CONFIG_NFS_V4_1 */
1859 }
1860
1861 #ifdef CONFIG_NFS_V4_1
1862 static void
1863 encode_getdevicelist(struct xdr_stream *xdr,
1864 const struct nfs4_getdevicelist_args *args,
1865 struct compound_hdr *hdr)
1866 {
1867 __be32 *p;
1868 nfs4_verifier dummy = {
1869 .data = "dummmmmy",
1870 };
1871
1872 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1873 p = reserve_space(xdr, 16);
1874 *p++ = cpu_to_be32(args->layoutclass);
1875 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1876 xdr_encode_hyper(p, 0ULL); /* cookie */
1877 encode_nfs4_verifier(xdr, &dummy);
1878 }
1879
1880 static void
1881 encode_getdeviceinfo(struct xdr_stream *xdr,
1882 const struct nfs4_getdeviceinfo_args *args,
1883 struct compound_hdr *hdr)
1884 {
1885 __be32 *p;
1886
1887 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1888 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1889 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1890 NFS4_DEVICEID4_SIZE);
1891 *p++ = cpu_to_be32(args->pdev->layout_type);
1892 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1893 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1894 }
1895
1896 static void
1897 encode_layoutget(struct xdr_stream *xdr,
1898 const struct nfs4_layoutget_args *args,
1899 struct compound_hdr *hdr)
1900 {
1901 __be32 *p;
1902
1903 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1904 p = reserve_space(xdr, 36);
1905 *p++ = cpu_to_be32(0); /* Signal layout available */
1906 *p++ = cpu_to_be32(args->type);
1907 *p++ = cpu_to_be32(args->range.iomode);
1908 p = xdr_encode_hyper(p, args->range.offset);
1909 p = xdr_encode_hyper(p, args->range.length);
1910 p = xdr_encode_hyper(p, args->minlength);
1911 encode_nfs4_stateid(xdr, &args->stateid);
1912 encode_uint32(xdr, args->maxcount);
1913
1914 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1915 __func__,
1916 args->type,
1917 args->range.iomode,
1918 (unsigned long)args->range.offset,
1919 (unsigned long)args->range.length,
1920 args->maxcount);
1921 }
1922
1923 static int
1924 encode_layoutcommit(struct xdr_stream *xdr,
1925 struct inode *inode,
1926 const struct nfs4_layoutcommit_args *args,
1927 struct compound_hdr *hdr)
1928 {
1929 __be32 *p;
1930
1931 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1932 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1933
1934 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1935 p = reserve_space(xdr, 20);
1936 /* Only whole file layouts */
1937 p = xdr_encode_hyper(p, 0); /* offset */
1938 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1939 *p = cpu_to_be32(0); /* reclaim */
1940 encode_nfs4_stateid(xdr, &args->stateid);
1941 p = reserve_space(xdr, 20);
1942 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1943 p = xdr_encode_hyper(p, args->lastbytewritten);
1944 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1945 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1946
1947 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1948 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1949 NFS_I(inode)->layout, xdr, args);
1950 else
1951 encode_uint32(xdr, 0); /* no layout-type payload */
1952
1953 return 0;
1954 }
1955
1956 static void
1957 encode_layoutreturn(struct xdr_stream *xdr,
1958 const struct nfs4_layoutreturn_args *args,
1959 struct compound_hdr *hdr)
1960 {
1961 __be32 *p;
1962
1963 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1964 p = reserve_space(xdr, 16);
1965 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1966 *p++ = cpu_to_be32(args->layout_type);
1967 *p++ = cpu_to_be32(IOMODE_ANY);
1968 *p = cpu_to_be32(RETURN_FILE);
1969 p = reserve_space(xdr, 16);
1970 p = xdr_encode_hyper(p, 0);
1971 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1972 spin_lock(&args->inode->i_lock);
1973 encode_nfs4_stateid(xdr, &args->stateid);
1974 spin_unlock(&args->inode->i_lock);
1975 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1976 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1977 NFS_I(args->inode)->layout, xdr, args);
1978 } else
1979 encode_uint32(xdr, 0);
1980 }
1981
1982 static int
1983 encode_secinfo_no_name(struct xdr_stream *xdr,
1984 const struct nfs41_secinfo_no_name_args *args,
1985 struct compound_hdr *hdr)
1986 {
1987 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
1988 encode_uint32(xdr, args->style);
1989 return 0;
1990 }
1991
1992 static void encode_test_stateid(struct xdr_stream *xdr,
1993 struct nfs41_test_stateid_args *args,
1994 struct compound_hdr *hdr)
1995 {
1996 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
1997 encode_uint32(xdr, 1);
1998 encode_nfs4_stateid(xdr, args->stateid);
1999 }
2000
2001 static void encode_free_stateid(struct xdr_stream *xdr,
2002 struct nfs41_free_stateid_args *args,
2003 struct compound_hdr *hdr)
2004 {
2005 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2006 encode_nfs4_stateid(xdr, &args->stateid);
2007 }
2008 #endif /* CONFIG_NFS_V4_1 */
2009
2010 /*
2011 * END OF "GENERIC" ENCODE ROUTINES.
2012 */
2013
2014 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2015 {
2016 #if defined(CONFIG_NFS_V4_1)
2017
2018 if (args->sa_slot)
2019 return args->sa_slot->table->session->clp->cl_mvops->minor_version;
2020 #endif /* CONFIG_NFS_V4_1 */
2021 return 0;
2022 }
2023
2024 /*
2025 * Encode an ACCESS request
2026 */
2027 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2028 const struct nfs4_accessargs *args)
2029 {
2030 struct compound_hdr hdr = {
2031 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2032 };
2033
2034 encode_compound_hdr(xdr, req, &hdr);
2035 encode_sequence(xdr, &args->seq_args, &hdr);
2036 encode_putfh(xdr, args->fh, &hdr);
2037 encode_access(xdr, args->access, &hdr);
2038 encode_getfattr(xdr, args->bitmask, &hdr);
2039 encode_nops(&hdr);
2040 }
2041
2042 /*
2043 * Encode LOOKUP request
2044 */
2045 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2046 const struct nfs4_lookup_arg *args)
2047 {
2048 struct compound_hdr hdr = {
2049 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2050 };
2051
2052 encode_compound_hdr(xdr, req, &hdr);
2053 encode_sequence(xdr, &args->seq_args, &hdr);
2054 encode_putfh(xdr, args->dir_fh, &hdr);
2055 encode_lookup(xdr, args->name, &hdr);
2056 encode_getfh(xdr, &hdr);
2057 encode_getfattr(xdr, args->bitmask, &hdr);
2058 encode_nops(&hdr);
2059 }
2060
2061 /*
2062 * Encode LOOKUP_ROOT request
2063 */
2064 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2065 struct xdr_stream *xdr,
2066 const struct nfs4_lookup_root_arg *args)
2067 {
2068 struct compound_hdr hdr = {
2069 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2070 };
2071
2072 encode_compound_hdr(xdr, req, &hdr);
2073 encode_sequence(xdr, &args->seq_args, &hdr);
2074 encode_putrootfh(xdr, &hdr);
2075 encode_getfh(xdr, &hdr);
2076 encode_getfattr(xdr, args->bitmask, &hdr);
2077 encode_nops(&hdr);
2078 }
2079
2080 /*
2081 * Encode REMOVE request
2082 */
2083 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2084 const struct nfs_removeargs *args)
2085 {
2086 struct compound_hdr hdr = {
2087 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2088 };
2089
2090 encode_compound_hdr(xdr, req, &hdr);
2091 encode_sequence(xdr, &args->seq_args, &hdr);
2092 encode_putfh(xdr, args->fh, &hdr);
2093 encode_remove(xdr, &args->name, &hdr);
2094 encode_nops(&hdr);
2095 }
2096
2097 /*
2098 * Encode RENAME request
2099 */
2100 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2101 const struct nfs_renameargs *args)
2102 {
2103 struct compound_hdr hdr = {
2104 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2105 };
2106
2107 encode_compound_hdr(xdr, req, &hdr);
2108 encode_sequence(xdr, &args->seq_args, &hdr);
2109 encode_putfh(xdr, args->old_dir, &hdr);
2110 encode_savefh(xdr, &hdr);
2111 encode_putfh(xdr, args->new_dir, &hdr);
2112 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2113 encode_nops(&hdr);
2114 }
2115
2116 /*
2117 * Encode LINK request
2118 */
2119 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2120 const struct nfs4_link_arg *args)
2121 {
2122 struct compound_hdr hdr = {
2123 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2124 };
2125
2126 encode_compound_hdr(xdr, req, &hdr);
2127 encode_sequence(xdr, &args->seq_args, &hdr);
2128 encode_putfh(xdr, args->fh, &hdr);
2129 encode_savefh(xdr, &hdr);
2130 encode_putfh(xdr, args->dir_fh, &hdr);
2131 encode_link(xdr, args->name, &hdr);
2132 encode_restorefh(xdr, &hdr);
2133 encode_getfattr(xdr, args->bitmask, &hdr);
2134 encode_nops(&hdr);
2135 }
2136
2137 /*
2138 * Encode CREATE request
2139 */
2140 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2141 const struct nfs4_create_arg *args)
2142 {
2143 struct compound_hdr hdr = {
2144 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2145 };
2146
2147 encode_compound_hdr(xdr, req, &hdr);
2148 encode_sequence(xdr, &args->seq_args, &hdr);
2149 encode_putfh(xdr, args->dir_fh, &hdr);
2150 encode_create(xdr, args, &hdr);
2151 encode_getfh(xdr, &hdr);
2152 encode_getfattr(xdr, args->bitmask, &hdr);
2153 encode_nops(&hdr);
2154 }
2155
2156 /*
2157 * Encode SYMLINK request
2158 */
2159 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2160 const struct nfs4_create_arg *args)
2161 {
2162 nfs4_xdr_enc_create(req, xdr, args);
2163 }
2164
2165 /*
2166 * Encode GETATTR request
2167 */
2168 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2169 const struct nfs4_getattr_arg *args)
2170 {
2171 struct compound_hdr hdr = {
2172 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2173 };
2174
2175 encode_compound_hdr(xdr, req, &hdr);
2176 encode_sequence(xdr, &args->seq_args, &hdr);
2177 encode_putfh(xdr, args->fh, &hdr);
2178 encode_getfattr(xdr, args->bitmask, &hdr);
2179 encode_nops(&hdr);
2180 }
2181
2182 /*
2183 * Encode a CLOSE request
2184 */
2185 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2186 struct nfs_closeargs *args)
2187 {
2188 struct compound_hdr hdr = {
2189 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2190 };
2191
2192 encode_compound_hdr(xdr, req, &hdr);
2193 encode_sequence(xdr, &args->seq_args, &hdr);
2194 encode_putfh(xdr, args->fh, &hdr);
2195 encode_close(xdr, args, &hdr);
2196 encode_getfattr(xdr, args->bitmask, &hdr);
2197 encode_nops(&hdr);
2198 }
2199
2200 /*
2201 * Encode an OPEN request
2202 */
2203 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2204 struct nfs_openargs *args)
2205 {
2206 struct compound_hdr hdr = {
2207 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2208 };
2209
2210 encode_compound_hdr(xdr, req, &hdr);
2211 encode_sequence(xdr, &args->seq_args, &hdr);
2212 encode_putfh(xdr, args->fh, &hdr);
2213 encode_open(xdr, args, &hdr);
2214 encode_getfh(xdr, &hdr);
2215 if (args->access)
2216 encode_access(xdr, args->access, &hdr);
2217 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2218 encode_nops(&hdr);
2219 }
2220
2221 /*
2222 * Encode an OPEN_CONFIRM request
2223 */
2224 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2225 struct xdr_stream *xdr,
2226 struct nfs_open_confirmargs *args)
2227 {
2228 struct compound_hdr hdr = {
2229 .nops = 0,
2230 };
2231
2232 encode_compound_hdr(xdr, req, &hdr);
2233 encode_putfh(xdr, args->fh, &hdr);
2234 encode_open_confirm(xdr, args, &hdr);
2235 encode_nops(&hdr);
2236 }
2237
2238 /*
2239 * Encode an OPEN request with no attributes.
2240 */
2241 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2242 struct xdr_stream *xdr,
2243 struct nfs_openargs *args)
2244 {
2245 struct compound_hdr hdr = {
2246 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2247 };
2248
2249 encode_compound_hdr(xdr, req, &hdr);
2250 encode_sequence(xdr, &args->seq_args, &hdr);
2251 encode_putfh(xdr, args->fh, &hdr);
2252 encode_open(xdr, args, &hdr);
2253 if (args->access)
2254 encode_access(xdr, args->access, &hdr);
2255 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2256 encode_nops(&hdr);
2257 }
2258
2259 /*
2260 * Encode an OPEN_DOWNGRADE request
2261 */
2262 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2263 struct xdr_stream *xdr,
2264 struct nfs_closeargs *args)
2265 {
2266 struct compound_hdr hdr = {
2267 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2268 };
2269
2270 encode_compound_hdr(xdr, req, &hdr);
2271 encode_sequence(xdr, &args->seq_args, &hdr);
2272 encode_putfh(xdr, args->fh, &hdr);
2273 encode_open_downgrade(xdr, args, &hdr);
2274 encode_getfattr(xdr, args->bitmask, &hdr);
2275 encode_nops(&hdr);
2276 }
2277
2278 /*
2279 * Encode a LOCK request
2280 */
2281 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2282 struct nfs_lock_args *args)
2283 {
2284 struct compound_hdr hdr = {
2285 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2286 };
2287
2288 encode_compound_hdr(xdr, req, &hdr);
2289 encode_sequence(xdr, &args->seq_args, &hdr);
2290 encode_putfh(xdr, args->fh, &hdr);
2291 encode_lock(xdr, args, &hdr);
2292 encode_nops(&hdr);
2293 }
2294
2295 /*
2296 * Encode a LOCKT request
2297 */
2298 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2299 struct nfs_lockt_args *args)
2300 {
2301 struct compound_hdr hdr = {
2302 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2303 };
2304
2305 encode_compound_hdr(xdr, req, &hdr);
2306 encode_sequence(xdr, &args->seq_args, &hdr);
2307 encode_putfh(xdr, args->fh, &hdr);
2308 encode_lockt(xdr, args, &hdr);
2309 encode_nops(&hdr);
2310 }
2311
2312 /*
2313 * Encode a LOCKU request
2314 */
2315 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2316 struct nfs_locku_args *args)
2317 {
2318 struct compound_hdr hdr = {
2319 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2320 };
2321
2322 encode_compound_hdr(xdr, req, &hdr);
2323 encode_sequence(xdr, &args->seq_args, &hdr);
2324 encode_putfh(xdr, args->fh, &hdr);
2325 encode_locku(xdr, args, &hdr);
2326 encode_nops(&hdr);
2327 }
2328
2329 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2330 struct xdr_stream *xdr,
2331 struct nfs_release_lockowner_args *args)
2332 {
2333 struct compound_hdr hdr = {
2334 .minorversion = 0,
2335 };
2336
2337 encode_compound_hdr(xdr, req, &hdr);
2338 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2339 encode_nops(&hdr);
2340 }
2341
2342 /*
2343 * Encode a READLINK request
2344 */
2345 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2346 const struct nfs4_readlink *args)
2347 {
2348 struct compound_hdr hdr = {
2349 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2350 };
2351
2352 encode_compound_hdr(xdr, req, &hdr);
2353 encode_sequence(xdr, &args->seq_args, &hdr);
2354 encode_putfh(xdr, args->fh, &hdr);
2355 encode_readlink(xdr, args, req, &hdr);
2356
2357 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2358 args->pgbase, args->pglen);
2359 encode_nops(&hdr);
2360 }
2361
2362 /*
2363 * Encode a READDIR request
2364 */
2365 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2366 const struct nfs4_readdir_arg *args)
2367 {
2368 struct compound_hdr hdr = {
2369 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2370 };
2371
2372 encode_compound_hdr(xdr, req, &hdr);
2373 encode_sequence(xdr, &args->seq_args, &hdr);
2374 encode_putfh(xdr, args->fh, &hdr);
2375 encode_readdir(xdr, args, req, &hdr);
2376
2377 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2378 args->pgbase, args->count);
2379 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2380 __func__, hdr.replen << 2, args->pages,
2381 args->pgbase, args->count);
2382 encode_nops(&hdr);
2383 }
2384
2385 /*
2386 * Encode a READ request
2387 */
2388 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2389 struct nfs_readargs *args)
2390 {
2391 struct compound_hdr hdr = {
2392 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2393 };
2394
2395 encode_compound_hdr(xdr, req, &hdr);
2396 encode_sequence(xdr, &args->seq_args, &hdr);
2397 encode_putfh(xdr, args->fh, &hdr);
2398 encode_read(xdr, args, &hdr);
2399
2400 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2401 args->pages, args->pgbase, args->count);
2402 req->rq_rcv_buf.flags |= XDRBUF_READ;
2403 encode_nops(&hdr);
2404 }
2405
2406 /*
2407 * Encode an SETATTR request
2408 */
2409 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2410 struct nfs_setattrargs *args)
2411 {
2412 struct compound_hdr hdr = {
2413 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2414 };
2415
2416 encode_compound_hdr(xdr, req, &hdr);
2417 encode_sequence(xdr, &args->seq_args, &hdr);
2418 encode_putfh(xdr, args->fh, &hdr);
2419 encode_setattr(xdr, args, args->server, &hdr);
2420 encode_getfattr(xdr, args->bitmask, &hdr);
2421 encode_nops(&hdr);
2422 }
2423
2424 /*
2425 * Encode a GETACL request
2426 */
2427 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2428 struct nfs_getaclargs *args)
2429 {
2430 struct compound_hdr hdr = {
2431 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2432 };
2433 uint32_t replen;
2434
2435 encode_compound_hdr(xdr, req, &hdr);
2436 encode_sequence(xdr, &args->seq_args, &hdr);
2437 encode_putfh(xdr, args->fh, &hdr);
2438 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2439 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2440
2441 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2442 args->acl_pages, args->acl_pgbase, args->acl_len);
2443
2444 encode_nops(&hdr);
2445 }
2446
2447 /*
2448 * Encode a WRITE request
2449 */
2450 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2451 struct nfs_writeargs *args)
2452 {
2453 struct compound_hdr hdr = {
2454 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2455 };
2456
2457 encode_compound_hdr(xdr, req, &hdr);
2458 encode_sequence(xdr, &args->seq_args, &hdr);
2459 encode_putfh(xdr, args->fh, &hdr);
2460 encode_write(xdr, args, &hdr);
2461 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2462 if (args->bitmask)
2463 encode_getfattr(xdr, args->bitmask, &hdr);
2464 encode_nops(&hdr);
2465 }
2466
2467 /*
2468 * a COMMIT request
2469 */
2470 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2471 struct nfs_commitargs *args)
2472 {
2473 struct compound_hdr hdr = {
2474 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2475 };
2476
2477 encode_compound_hdr(xdr, req, &hdr);
2478 encode_sequence(xdr, &args->seq_args, &hdr);
2479 encode_putfh(xdr, args->fh, &hdr);
2480 encode_commit(xdr, args, &hdr);
2481 encode_nops(&hdr);
2482 }
2483
2484 /*
2485 * FSINFO request
2486 */
2487 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2488 struct nfs4_fsinfo_arg *args)
2489 {
2490 struct compound_hdr hdr = {
2491 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2492 };
2493
2494 encode_compound_hdr(xdr, req, &hdr);
2495 encode_sequence(xdr, &args->seq_args, &hdr);
2496 encode_putfh(xdr, args->fh, &hdr);
2497 encode_fsinfo(xdr, args->bitmask, &hdr);
2498 encode_nops(&hdr);
2499 }
2500
2501 /*
2502 * a PATHCONF request
2503 */
2504 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2505 const struct nfs4_pathconf_arg *args)
2506 {
2507 struct compound_hdr hdr = {
2508 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2509 };
2510
2511 encode_compound_hdr(xdr, req, &hdr);
2512 encode_sequence(xdr, &args->seq_args, &hdr);
2513 encode_putfh(xdr, args->fh, &hdr);
2514 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2515 &hdr);
2516 encode_nops(&hdr);
2517 }
2518
2519 /*
2520 * a STATFS request
2521 */
2522 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2523 const struct nfs4_statfs_arg *args)
2524 {
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2527 };
2528
2529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2533 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2534 encode_nops(&hdr);
2535 }
2536
2537 /*
2538 * GETATTR_BITMAP request
2539 */
2540 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2541 struct xdr_stream *xdr,
2542 struct nfs4_server_caps_arg *args)
2543 {
2544 struct compound_hdr hdr = {
2545 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2546 };
2547
2548 encode_compound_hdr(xdr, req, &hdr);
2549 encode_sequence(xdr, &args->seq_args, &hdr);
2550 encode_putfh(xdr, args->fhandle, &hdr);
2551 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2552 FATTR4_WORD0_FH_EXPIRE_TYPE|
2553 FATTR4_WORD0_LINK_SUPPORT|
2554 FATTR4_WORD0_SYMLINK_SUPPORT|
2555 FATTR4_WORD0_ACLSUPPORT, &hdr);
2556 encode_nops(&hdr);
2557 }
2558
2559 /*
2560 * a RENEW request
2561 */
2562 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2563 struct nfs_client *clp)
2564 {
2565 struct compound_hdr hdr = {
2566 .nops = 0,
2567 };
2568
2569 encode_compound_hdr(xdr, req, &hdr);
2570 encode_renew(xdr, clp->cl_clientid, &hdr);
2571 encode_nops(&hdr);
2572 }
2573
2574 /*
2575 * a SETCLIENTID request
2576 */
2577 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2578 struct xdr_stream *xdr,
2579 struct nfs4_setclientid *sc)
2580 {
2581 struct compound_hdr hdr = {
2582 .nops = 0,
2583 };
2584
2585 encode_compound_hdr(xdr, req, &hdr);
2586 encode_setclientid(xdr, sc, &hdr);
2587 encode_nops(&hdr);
2588 }
2589
2590 /*
2591 * a SETCLIENTID_CONFIRM request
2592 */
2593 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2594 struct xdr_stream *xdr,
2595 struct nfs4_setclientid_res *arg)
2596 {
2597 struct compound_hdr hdr = {
2598 .nops = 0,
2599 };
2600
2601 encode_compound_hdr(xdr, req, &hdr);
2602 encode_setclientid_confirm(xdr, arg, &hdr);
2603 encode_nops(&hdr);
2604 }
2605
2606 /*
2607 * DELEGRETURN request
2608 */
2609 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2610 struct xdr_stream *xdr,
2611 const struct nfs4_delegreturnargs *args)
2612 {
2613 struct compound_hdr hdr = {
2614 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2615 };
2616
2617 encode_compound_hdr(xdr, req, &hdr);
2618 encode_sequence(xdr, &args->seq_args, &hdr);
2619 encode_putfh(xdr, args->fhandle, &hdr);
2620 encode_getfattr(xdr, args->bitmask, &hdr);
2621 encode_delegreturn(xdr, args->stateid, &hdr);
2622 encode_nops(&hdr);
2623 }
2624
2625 /*
2626 * Encode FS_LOCATIONS request
2627 */
2628 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2629 struct xdr_stream *xdr,
2630 struct nfs4_fs_locations_arg *args)
2631 {
2632 struct compound_hdr hdr = {
2633 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2634 };
2635 uint32_t replen;
2636
2637 encode_compound_hdr(xdr, req, &hdr);
2638 encode_sequence(xdr, &args->seq_args, &hdr);
2639 encode_putfh(xdr, args->dir_fh, &hdr);
2640 encode_lookup(xdr, args->name, &hdr);
2641 replen = hdr.replen; /* get the attribute into args->page */
2642 encode_fs_locations(xdr, args->bitmask, &hdr);
2643
2644 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2645 0, PAGE_SIZE);
2646 encode_nops(&hdr);
2647 }
2648
2649 /*
2650 * Encode SECINFO request
2651 */
2652 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2653 struct xdr_stream *xdr,
2654 struct nfs4_secinfo_arg *args)
2655 {
2656 struct compound_hdr hdr = {
2657 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2658 };
2659
2660 encode_compound_hdr(xdr, req, &hdr);
2661 encode_sequence(xdr, &args->seq_args, &hdr);
2662 encode_putfh(xdr, args->dir_fh, &hdr);
2663 encode_secinfo(xdr, args->name, &hdr);
2664 encode_nops(&hdr);
2665 }
2666
2667 #if defined(CONFIG_NFS_V4_1)
2668 /*
2669 * BIND_CONN_TO_SESSION request
2670 */
2671 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2672 struct xdr_stream *xdr,
2673 struct nfs_client *clp)
2674 {
2675 struct compound_hdr hdr = {
2676 .minorversion = clp->cl_mvops->minor_version,
2677 };
2678
2679 encode_compound_hdr(xdr, req, &hdr);
2680 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2681 encode_nops(&hdr);
2682 }
2683
2684 /*
2685 * EXCHANGE_ID request
2686 */
2687 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2688 struct xdr_stream *xdr,
2689 struct nfs41_exchange_id_args *args)
2690 {
2691 struct compound_hdr hdr = {
2692 .minorversion = args->client->cl_mvops->minor_version,
2693 };
2694
2695 encode_compound_hdr(xdr, req, &hdr);
2696 encode_exchange_id(xdr, args, &hdr);
2697 encode_nops(&hdr);
2698 }
2699
2700 /*
2701 * a CREATE_SESSION request
2702 */
2703 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2704 struct xdr_stream *xdr,
2705 struct nfs41_create_session_args *args)
2706 {
2707 struct compound_hdr hdr = {
2708 .minorversion = args->client->cl_mvops->minor_version,
2709 };
2710
2711 encode_compound_hdr(xdr, req, &hdr);
2712 encode_create_session(xdr, args, &hdr);
2713 encode_nops(&hdr);
2714 }
2715
2716 /*
2717 * a DESTROY_SESSION request
2718 */
2719 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2720 struct xdr_stream *xdr,
2721 struct nfs4_session *session)
2722 {
2723 struct compound_hdr hdr = {
2724 .minorversion = session->clp->cl_mvops->minor_version,
2725 };
2726
2727 encode_compound_hdr(xdr, req, &hdr);
2728 encode_destroy_session(xdr, session, &hdr);
2729 encode_nops(&hdr);
2730 }
2731
2732 /*
2733 * a DESTROY_CLIENTID request
2734 */
2735 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2736 struct xdr_stream *xdr,
2737 struct nfs_client *clp)
2738 {
2739 struct compound_hdr hdr = {
2740 .minorversion = clp->cl_mvops->minor_version,
2741 };
2742
2743 encode_compound_hdr(xdr, req, &hdr);
2744 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2745 encode_nops(&hdr);
2746 }
2747
2748 /*
2749 * a SEQUENCE request
2750 */
2751 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2752 struct nfs4_sequence_args *args)
2753 {
2754 struct compound_hdr hdr = {
2755 .minorversion = nfs4_xdr_minorversion(args),
2756 };
2757
2758 encode_compound_hdr(xdr, req, &hdr);
2759 encode_sequence(xdr, args, &hdr);
2760 encode_nops(&hdr);
2761 }
2762
2763 /*
2764 * a GET_LEASE_TIME request
2765 */
2766 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2767 struct xdr_stream *xdr,
2768 struct nfs4_get_lease_time_args *args)
2769 {
2770 struct compound_hdr hdr = {
2771 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2772 };
2773 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2774
2775 encode_compound_hdr(xdr, req, &hdr);
2776 encode_sequence(xdr, &args->la_seq_args, &hdr);
2777 encode_putrootfh(xdr, &hdr);
2778 encode_fsinfo(xdr, lease_bitmap, &hdr);
2779 encode_nops(&hdr);
2780 }
2781
2782 /*
2783 * a RECLAIM_COMPLETE request
2784 */
2785 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2786 struct xdr_stream *xdr,
2787 struct nfs41_reclaim_complete_args *args)
2788 {
2789 struct compound_hdr hdr = {
2790 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2791 };
2792
2793 encode_compound_hdr(xdr, req, &hdr);
2794 encode_sequence(xdr, &args->seq_args, &hdr);
2795 encode_reclaim_complete(xdr, args, &hdr);
2796 encode_nops(&hdr);
2797 }
2798
2799 /*
2800 * Encode GETDEVICELIST request
2801 */
2802 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2803 struct xdr_stream *xdr,
2804 struct nfs4_getdevicelist_args *args)
2805 {
2806 struct compound_hdr hdr = {
2807 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2808 };
2809
2810 encode_compound_hdr(xdr, req, &hdr);
2811 encode_sequence(xdr, &args->seq_args, &hdr);
2812 encode_putfh(xdr, args->fh, &hdr);
2813 encode_getdevicelist(xdr, args, &hdr);
2814 encode_nops(&hdr);
2815 }
2816
2817 /*
2818 * Encode GETDEVICEINFO request
2819 */
2820 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2821 struct xdr_stream *xdr,
2822 struct nfs4_getdeviceinfo_args *args)
2823 {
2824 struct compound_hdr hdr = {
2825 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2826 };
2827
2828 encode_compound_hdr(xdr, req, &hdr);
2829 encode_sequence(xdr, &args->seq_args, &hdr);
2830 encode_getdeviceinfo(xdr, args, &hdr);
2831
2832 /* set up reply kvec. Subtract notification bitmap max size (2)
2833 * so that notification bitmap is put in xdr_buf tail */
2834 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2835 args->pdev->pages, args->pdev->pgbase,
2836 args->pdev->pglen);
2837
2838 encode_nops(&hdr);
2839 }
2840
2841 /*
2842 * Encode LAYOUTGET request
2843 */
2844 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2845 struct xdr_stream *xdr,
2846 struct nfs4_layoutget_args *args)
2847 {
2848 struct compound_hdr hdr = {
2849 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2850 };
2851
2852 encode_compound_hdr(xdr, req, &hdr);
2853 encode_sequence(xdr, &args->seq_args, &hdr);
2854 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2855 encode_layoutget(xdr, args, &hdr);
2856
2857 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2858 args->layout.pages, 0, args->layout.pglen);
2859
2860 encode_nops(&hdr);
2861 }
2862
2863 /*
2864 * Encode LAYOUTCOMMIT request
2865 */
2866 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2867 struct xdr_stream *xdr,
2868 struct nfs4_layoutcommit_args *args)
2869 {
2870 struct nfs4_layoutcommit_data *data =
2871 container_of(args, struct nfs4_layoutcommit_data, args);
2872 struct compound_hdr hdr = {
2873 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2874 };
2875
2876 encode_compound_hdr(xdr, req, &hdr);
2877 encode_sequence(xdr, &args->seq_args, &hdr);
2878 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2879 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2880 encode_getfattr(xdr, args->bitmask, &hdr);
2881 encode_nops(&hdr);
2882 }
2883
2884 /*
2885 * Encode LAYOUTRETURN request
2886 */
2887 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2888 struct xdr_stream *xdr,
2889 struct nfs4_layoutreturn_args *args)
2890 {
2891 struct compound_hdr hdr = {
2892 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2893 };
2894
2895 encode_compound_hdr(xdr, req, &hdr);
2896 encode_sequence(xdr, &args->seq_args, &hdr);
2897 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2898 encode_layoutreturn(xdr, args, &hdr);
2899 encode_nops(&hdr);
2900 }
2901
2902 /*
2903 * Encode SECINFO_NO_NAME request
2904 */
2905 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2906 struct xdr_stream *xdr,
2907 struct nfs41_secinfo_no_name_args *args)
2908 {
2909 struct compound_hdr hdr = {
2910 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2911 };
2912
2913 encode_compound_hdr(xdr, req, &hdr);
2914 encode_sequence(xdr, &args->seq_args, &hdr);
2915 encode_putrootfh(xdr, &hdr);
2916 encode_secinfo_no_name(xdr, args, &hdr);
2917 encode_nops(&hdr);
2918 return 0;
2919 }
2920
2921 /*
2922 * Encode TEST_STATEID request
2923 */
2924 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2925 struct xdr_stream *xdr,
2926 struct nfs41_test_stateid_args *args)
2927 {
2928 struct compound_hdr hdr = {
2929 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2930 };
2931
2932 encode_compound_hdr(xdr, req, &hdr);
2933 encode_sequence(xdr, &args->seq_args, &hdr);
2934 encode_test_stateid(xdr, args, &hdr);
2935 encode_nops(&hdr);
2936 }
2937
2938 /*
2939 * Encode FREE_STATEID request
2940 */
2941 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2942 struct xdr_stream *xdr,
2943 struct nfs41_free_stateid_args *args)
2944 {
2945 struct compound_hdr hdr = {
2946 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2947 };
2948
2949 encode_compound_hdr(xdr, req, &hdr);
2950 encode_sequence(xdr, &args->seq_args, &hdr);
2951 encode_free_stateid(xdr, args, &hdr);
2952 encode_nops(&hdr);
2953 }
2954 #endif /* CONFIG_NFS_V4_1 */
2955
2956 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2957 {
2958 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2959 "Remaining buffer length is %tu words.\n",
2960 func, xdr->end - xdr->p);
2961 }
2962
2963 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2964 {
2965 __be32 *p;
2966
2967 p = xdr_inline_decode(xdr, 4);
2968 if (unlikely(!p))
2969 goto out_overflow;
2970 *len = be32_to_cpup(p);
2971 p = xdr_inline_decode(xdr, *len);
2972 if (unlikely(!p))
2973 goto out_overflow;
2974 *string = (char *)p;
2975 return 0;
2976 out_overflow:
2977 print_overflow_msg(__func__, xdr);
2978 return -EIO;
2979 }
2980
2981 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2982 {
2983 __be32 *p;
2984
2985 p = xdr_inline_decode(xdr, 8);
2986 if (unlikely(!p))
2987 goto out_overflow;
2988 hdr->status = be32_to_cpup(p++);
2989 hdr->taglen = be32_to_cpup(p);
2990
2991 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2992 if (unlikely(!p))
2993 goto out_overflow;
2994 hdr->tag = (char *)p;
2995 p += XDR_QUADLEN(hdr->taglen);
2996 hdr->nops = be32_to_cpup(p);
2997 if (unlikely(hdr->nops < 1))
2998 return nfs4_stat_to_errno(hdr->status);
2999 return 0;
3000 out_overflow:
3001 print_overflow_msg(__func__, xdr);
3002 return -EIO;
3003 }
3004
3005 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3006 {
3007 __be32 *p;
3008 uint32_t opnum;
3009 int32_t nfserr;
3010
3011 p = xdr_inline_decode(xdr, 8);
3012 if (unlikely(!p))
3013 goto out_overflow;
3014 opnum = be32_to_cpup(p++);
3015 if (opnum != expected) {
3016 dprintk("nfs: Server returned operation"
3017 " %d but we issued a request for %d\n",
3018 opnum, expected);
3019 return -EIO;
3020 }
3021 nfserr = be32_to_cpup(p);
3022 if (nfserr != NFS_OK)
3023 return nfs4_stat_to_errno(nfserr);
3024 return 0;
3025 out_overflow:
3026 print_overflow_msg(__func__, xdr);
3027 return -EIO;
3028 }
3029
3030 /* Dummy routine */
3031 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3032 {
3033 __be32 *p;
3034 unsigned int strlen;
3035 char *str;
3036
3037 p = xdr_inline_decode(xdr, 12);
3038 if (likely(p))
3039 return decode_opaque_inline(xdr, &strlen, &str);
3040 print_overflow_msg(__func__, xdr);
3041 return -EIO;
3042 }
3043
3044 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3045 {
3046 uint32_t bmlen;
3047 __be32 *p;
3048
3049 p = xdr_inline_decode(xdr, 4);
3050 if (unlikely(!p))
3051 goto out_overflow;
3052 bmlen = be32_to_cpup(p);
3053
3054 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3055 p = xdr_inline_decode(xdr, (bmlen << 2));
3056 if (unlikely(!p))
3057 goto out_overflow;
3058 if (bmlen > 0) {
3059 bitmap[0] = be32_to_cpup(p++);
3060 if (bmlen > 1) {
3061 bitmap[1] = be32_to_cpup(p++);
3062 if (bmlen > 2)
3063 bitmap[2] = be32_to_cpup(p);
3064 }
3065 }
3066 return 0;
3067 out_overflow:
3068 print_overflow_msg(__func__, xdr);
3069 return -EIO;
3070 }
3071
3072 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3073 {
3074 __be32 *p;
3075
3076 p = xdr_inline_decode(xdr, 4);
3077 if (unlikely(!p))
3078 goto out_overflow;
3079 *attrlen = be32_to_cpup(p);
3080 *savep = xdr_stream_pos(xdr);
3081 return 0;
3082 out_overflow:
3083 print_overflow_msg(__func__, xdr);
3084 return -EIO;
3085 }
3086
3087 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3088 {
3089 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3090 int ret;
3091 ret = decode_attr_bitmap(xdr, bitmask);
3092 if (unlikely(ret < 0))
3093 return ret;
3094 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3095 } else
3096 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3097 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3098 bitmask[0], bitmask[1], bitmask[2]);
3099 return 0;
3100 }
3101
3102 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3103 {
3104 __be32 *p;
3105 int ret = 0;
3106
3107 *type = 0;
3108 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3109 return -EIO;
3110 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3111 p = xdr_inline_decode(xdr, 4);
3112 if (unlikely(!p))
3113 goto out_overflow;
3114 *type = be32_to_cpup(p);
3115 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3116 dprintk("%s: bad type %d\n", __func__, *type);
3117 return -EIO;
3118 }
3119 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3120 ret = NFS_ATTR_FATTR_TYPE;
3121 }
3122 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3123 return ret;
3124 out_overflow:
3125 print_overflow_msg(__func__, xdr);
3126 return -EIO;
3127 }
3128
3129 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3130 uint32_t *bitmap, uint32_t *type)
3131 {
3132 __be32 *p;
3133
3134 *type = 0;
3135 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3136 return -EIO;
3137 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3138 p = xdr_inline_decode(xdr, 4);
3139 if (unlikely(!p))
3140 goto out_overflow;
3141 *type = be32_to_cpup(p);
3142 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3143 }
3144 dprintk("%s: expire type=0x%x\n", __func__, *type);
3145 return 0;
3146 out_overflow:
3147 print_overflow_msg(__func__, xdr);
3148 return -EIO;
3149 }
3150
3151 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3152 {
3153 __be32 *p;
3154 int ret = 0;
3155
3156 *change = 0;
3157 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3158 return -EIO;
3159 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3160 p = xdr_inline_decode(xdr, 8);
3161 if (unlikely(!p))
3162 goto out_overflow;
3163 xdr_decode_hyper(p, change);
3164 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3165 ret = NFS_ATTR_FATTR_CHANGE;
3166 }
3167 dprintk("%s: change attribute=%Lu\n", __func__,
3168 (unsigned long long)*change);
3169 return ret;
3170 out_overflow:
3171 print_overflow_msg(__func__, xdr);
3172 return -EIO;
3173 }
3174
3175 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3176 {
3177 __be32 *p;
3178 int ret = 0;
3179
3180 *size = 0;
3181 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3182 return -EIO;
3183 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3184 p = xdr_inline_decode(xdr, 8);
3185 if (unlikely(!p))
3186 goto out_overflow;
3187 xdr_decode_hyper(p, size);
3188 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3189 ret = NFS_ATTR_FATTR_SIZE;
3190 }
3191 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3192 return ret;
3193 out_overflow:
3194 print_overflow_msg(__func__, xdr);
3195 return -EIO;
3196 }
3197
3198 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3199 {
3200 __be32 *p;
3201
3202 *res = 0;
3203 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3204 return -EIO;
3205 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3206 p = xdr_inline_decode(xdr, 4);
3207 if (unlikely(!p))
3208 goto out_overflow;
3209 *res = be32_to_cpup(p);
3210 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3211 }
3212 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3213 return 0;
3214 out_overflow:
3215 print_overflow_msg(__func__, xdr);
3216 return -EIO;
3217 }
3218
3219 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3220 {
3221 __be32 *p;
3222
3223 *res = 0;
3224 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3225 return -EIO;
3226 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3227 p = xdr_inline_decode(xdr, 4);
3228 if (unlikely(!p))
3229 goto out_overflow;
3230 *res = be32_to_cpup(p);
3231 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3232 }
3233 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3234 return 0;
3235 out_overflow:
3236 print_overflow_msg(__func__, xdr);
3237 return -EIO;
3238 }
3239
3240 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3241 {
3242 __be32 *p;
3243 int ret = 0;
3244
3245 fsid->major = 0;
3246 fsid->minor = 0;
3247 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3248 return -EIO;
3249 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3250 p = xdr_inline_decode(xdr, 16);
3251 if (unlikely(!p))
3252 goto out_overflow;
3253 p = xdr_decode_hyper(p, &fsid->major);
3254 xdr_decode_hyper(p, &fsid->minor);
3255 bitmap[0] &= ~FATTR4_WORD0_FSID;
3256 ret = NFS_ATTR_FATTR_FSID;
3257 }
3258 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3259 (unsigned long long)fsid->major,
3260 (unsigned long long)fsid->minor);
3261 return ret;
3262 out_overflow:
3263 print_overflow_msg(__func__, xdr);
3264 return -EIO;
3265 }
3266
3267 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3268 {
3269 __be32 *p;
3270
3271 *res = 60;
3272 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3273 return -EIO;
3274 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3275 p = xdr_inline_decode(xdr, 4);
3276 if (unlikely(!p))
3277 goto out_overflow;
3278 *res = be32_to_cpup(p);
3279 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3280 }
3281 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3282 return 0;
3283 out_overflow:
3284 print_overflow_msg(__func__, xdr);
3285 return -EIO;
3286 }
3287
3288 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3289 {
3290 __be32 *p;
3291
3292 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3293 return -EIO;
3294 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3295 p = xdr_inline_decode(xdr, 4);
3296 if (unlikely(!p))
3297 goto out_overflow;
3298 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3299 *res = -be32_to_cpup(p);
3300 }
3301 return 0;
3302 out_overflow:
3303 print_overflow_msg(__func__, xdr);
3304 return -EIO;
3305 }
3306
3307 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3308 {
3309 __be32 *p;
3310 int len;
3311
3312 if (fh != NULL)
3313 memset(fh, 0, sizeof(*fh));
3314
3315 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3316 return -EIO;
3317 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3318 p = xdr_inline_decode(xdr, 4);
3319 if (unlikely(!p))
3320 goto out_overflow;
3321 len = be32_to_cpup(p);
3322 if (len > NFS4_FHSIZE)
3323 return -EIO;
3324 p = xdr_inline_decode(xdr, len);
3325 if (unlikely(!p))
3326 goto out_overflow;
3327 if (fh != NULL) {
3328 memcpy(fh->data, p, len);
3329 fh->size = len;
3330 }
3331 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3332 }
3333 return 0;
3334 out_overflow:
3335 print_overflow_msg(__func__, xdr);
3336 return -EIO;
3337 }
3338
3339 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3340 {
3341 __be32 *p;
3342
3343 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3344 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3345 return -EIO;
3346 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3347 p = xdr_inline_decode(xdr, 4);
3348 if (unlikely(!p))
3349 goto out_overflow;
3350 *res = be32_to_cpup(p);
3351 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3352 }
3353 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3354 return 0;
3355 out_overflow:
3356 print_overflow_msg(__func__, xdr);
3357 return -EIO;
3358 }
3359
3360 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3361 {
3362 __be32 *p;
3363 int ret = 0;
3364
3365 *fileid = 0;
3366 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3367 return -EIO;
3368 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3369 p = xdr_inline_decode(xdr, 8);
3370 if (unlikely(!p))
3371 goto out_overflow;
3372 xdr_decode_hyper(p, fileid);
3373 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3374 ret = NFS_ATTR_FATTR_FILEID;
3375 }
3376 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3377 return ret;
3378 out_overflow:
3379 print_overflow_msg(__func__, xdr);
3380 return -EIO;
3381 }
3382
3383 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3384 {
3385 __be32 *p;
3386 int ret = 0;
3387
3388 *fileid = 0;
3389 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3390 return -EIO;
3391 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3392 p = xdr_inline_decode(xdr, 8);
3393 if (unlikely(!p))
3394 goto out_overflow;
3395 xdr_decode_hyper(p, fileid);
3396 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3397 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3398 }
3399 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3400 return ret;
3401 out_overflow:
3402 print_overflow_msg(__func__, xdr);
3403 return -EIO;
3404 }
3405
3406 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3407 {
3408 __be32 *p;
3409 int status = 0;
3410
3411 *res = 0;
3412 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3413 return -EIO;
3414 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3415 p = xdr_inline_decode(xdr, 8);
3416 if (unlikely(!p))
3417 goto out_overflow;
3418 xdr_decode_hyper(p, res);
3419 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3420 }
3421 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3422 return status;
3423 out_overflow:
3424 print_overflow_msg(__func__, xdr);
3425 return -EIO;
3426 }
3427
3428 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3429 {
3430 __be32 *p;
3431 int status = 0;
3432
3433 *res = 0;
3434 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3435 return -EIO;
3436 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3437 p = xdr_inline_decode(xdr, 8);
3438 if (unlikely(!p))
3439 goto out_overflow;
3440 xdr_decode_hyper(p, res);
3441 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3442 }
3443 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3444 return status;
3445 out_overflow:
3446 print_overflow_msg(__func__, xdr);
3447 return -EIO;
3448 }
3449
3450 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3451 {
3452 __be32 *p;
3453 int status = 0;
3454
3455 *res = 0;
3456 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3457 return -EIO;
3458 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3459 p = xdr_inline_decode(xdr, 8);
3460 if (unlikely(!p))
3461 goto out_overflow;
3462 xdr_decode_hyper(p, res);
3463 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3464 }
3465 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3466 return status;
3467 out_overflow:
3468 print_overflow_msg(__func__, xdr);
3469 return -EIO;
3470 }
3471
3472 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3473 {
3474 u32 n;
3475 __be32 *p;
3476 int status = 0;
3477
3478 p = xdr_inline_decode(xdr, 4);
3479 if (unlikely(!p))
3480 goto out_overflow;
3481 n = be32_to_cpup(p);
3482 if (n == 0)
3483 goto root_path;
3484 dprintk("pathname4: ");
3485 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3486 dprintk("cannot parse %d components in path\n", n);
3487 goto out_eio;
3488 }
3489 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3490 struct nfs4_string *component = &path->components[path->ncomponents];
3491 status = decode_opaque_inline(xdr, &component->len, &component->data);
3492 if (unlikely(status != 0))
3493 goto out_eio;
3494 ifdebug (XDR)
3495 pr_cont("%s%.*s ",
3496 (path->ncomponents != n ? "/ " : ""),
3497 component->len, component->data);
3498 }
3499 out:
3500 return status;
3501 root_path:
3502 /* a root pathname is sent as a zero component4 */
3503 path->ncomponents = 1;
3504 path->components[0].len=0;
3505 path->components[0].data=NULL;
3506 dprintk("pathname4: /\n");
3507 goto out;
3508 out_eio:
3509 dprintk(" status %d", status);
3510 status = -EIO;
3511 goto out;
3512 out_overflow:
3513 print_overflow_msg(__func__, xdr);
3514 return -EIO;
3515 }
3516
3517 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3518 {
3519 int n;
3520 __be32 *p;
3521 int status = -EIO;
3522
3523 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3524 goto out;
3525 status = 0;
3526 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3527 goto out;
3528 status = -EIO;
3529 /* Ignore borken servers that return unrequested attrs */
3530 if (unlikely(res == NULL))
3531 goto out;
3532 dprintk("%s: fsroot:\n", __func__);
3533 status = decode_pathname(xdr, &res->fs_path);
3534 if (unlikely(status != 0))
3535 goto out;
3536 p = xdr_inline_decode(xdr, 4);
3537 if (unlikely(!p))
3538 goto out_overflow;
3539 n = be32_to_cpup(p);
3540 if (n <= 0)
3541 goto out_eio;
3542 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3543 u32 m;
3544 struct nfs4_fs_location *loc;
3545
3546 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3547 break;
3548 loc = &res->locations[res->nlocations];
3549 p = xdr_inline_decode(xdr, 4);
3550 if (unlikely(!p))
3551 goto out_overflow;
3552 m = be32_to_cpup(p);
3553
3554 dprintk("%s: servers:\n", __func__);
3555 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3556 struct nfs4_string *server;
3557
3558 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3559 unsigned int i;
3560 dprintk("%s: using first %u of %u servers "
3561 "returned for location %u\n",
3562 __func__,
3563 NFS4_FS_LOCATION_MAXSERVERS,
3564 m, res->nlocations);
3565 for (i = loc->nservers; i < m; i++) {
3566 unsigned int len;
3567 char *data;
3568 status = decode_opaque_inline(xdr, &len, &data);
3569 if (unlikely(status != 0))
3570 goto out_eio;
3571 }
3572 break;
3573 }
3574 server = &loc->servers[loc->nservers];
3575 status = decode_opaque_inline(xdr, &server->len, &server->data);
3576 if (unlikely(status != 0))
3577 goto out_eio;
3578 dprintk("%s ", server->data);
3579 }
3580 status = decode_pathname(xdr, &loc->rootpath);
3581 if (unlikely(status != 0))
3582 goto out_eio;
3583 }
3584 if (res->nlocations != 0)
3585 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3586 out:
3587 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3588 return status;
3589 out_overflow:
3590 print_overflow_msg(__func__, xdr);
3591 out_eio:
3592 status = -EIO;
3593 goto out;
3594 }
3595
3596 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3597 {
3598 __be32 *p;
3599 int status = 0;
3600
3601 *res = 0;
3602 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3603 return -EIO;
3604 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3605 p = xdr_inline_decode(xdr, 8);
3606 if (unlikely(!p))
3607 goto out_overflow;
3608 xdr_decode_hyper(p, res);
3609 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3610 }
3611 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3612 return status;
3613 out_overflow:
3614 print_overflow_msg(__func__, xdr);
3615 return -EIO;
3616 }
3617
3618 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3619 {
3620 __be32 *p;
3621 int status = 0;
3622
3623 *maxlink = 1;
3624 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3625 return -EIO;
3626 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3627 p = xdr_inline_decode(xdr, 4);
3628 if (unlikely(!p))
3629 goto out_overflow;
3630 *maxlink = be32_to_cpup(p);
3631 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3632 }
3633 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3634 return status;
3635 out_overflow:
3636 print_overflow_msg(__func__, xdr);
3637 return -EIO;
3638 }
3639
3640 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3641 {
3642 __be32 *p;
3643 int status = 0;
3644
3645 *maxname = 1024;
3646 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3647 return -EIO;
3648 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3649 p = xdr_inline_decode(xdr, 4);
3650 if (unlikely(!p))
3651 goto out_overflow;
3652 *maxname = be32_to_cpup(p);
3653 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3654 }
3655 dprintk("%s: maxname=%u\n", __func__, *maxname);
3656 return status;
3657 out_overflow:
3658 print_overflow_msg(__func__, xdr);
3659 return -EIO;
3660 }
3661
3662 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3663 {
3664 __be32 *p;
3665 int status = 0;
3666
3667 *res = 1024;
3668 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3669 return -EIO;
3670 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3671 uint64_t maxread;
3672 p = xdr_inline_decode(xdr, 8);
3673 if (unlikely(!p))
3674 goto out_overflow;
3675 xdr_decode_hyper(p, &maxread);
3676 if (maxread > 0x7FFFFFFF)
3677 maxread = 0x7FFFFFFF;
3678 *res = (uint32_t)maxread;
3679 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3680 }
3681 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3682 return status;
3683 out_overflow:
3684 print_overflow_msg(__func__, xdr);
3685 return -EIO;
3686 }
3687
3688 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3689 {
3690 __be32 *p;
3691 int status = 0;
3692
3693 *res = 1024;
3694 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3695 return -EIO;
3696 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3697 uint64_t maxwrite;
3698 p = xdr_inline_decode(xdr, 8);
3699 if (unlikely(!p))
3700 goto out_overflow;
3701 xdr_decode_hyper(p, &maxwrite);
3702 if (maxwrite > 0x7FFFFFFF)
3703 maxwrite = 0x7FFFFFFF;
3704 *res = (uint32_t)maxwrite;
3705 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3706 }
3707 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3708 return status;
3709 out_overflow:
3710 print_overflow_msg(__func__, xdr);
3711 return -EIO;
3712 }
3713
3714 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3715 {
3716 uint32_t tmp;
3717 __be32 *p;
3718 int ret = 0;
3719
3720 *mode = 0;
3721 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3722 return -EIO;
3723 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3724 p = xdr_inline_decode(xdr, 4);
3725 if (unlikely(!p))
3726 goto out_overflow;
3727 tmp = be32_to_cpup(p);
3728 *mode = tmp & ~S_IFMT;
3729 bitmap[1] &= ~FATTR4_WORD1_MODE;
3730 ret = NFS_ATTR_FATTR_MODE;
3731 }
3732 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3733 return ret;
3734 out_overflow:
3735 print_overflow_msg(__func__, xdr);
3736 return -EIO;
3737 }
3738
3739 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3740 {
3741 __be32 *p;
3742 int ret = 0;
3743
3744 *nlink = 1;
3745 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3746 return -EIO;
3747 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3748 p = xdr_inline_decode(xdr, 4);
3749 if (unlikely(!p))
3750 goto out_overflow;
3751 *nlink = be32_to_cpup(p);
3752 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3753 ret = NFS_ATTR_FATTR_NLINK;
3754 }
3755 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3756 return ret;
3757 out_overflow:
3758 print_overflow_msg(__func__, xdr);
3759 return -EIO;
3760 }
3761
3762 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3763 const struct nfs_server *server, kuid_t *uid,
3764 struct nfs4_string *owner_name)
3765 {
3766 uint32_t len;
3767 __be32 *p;
3768 int ret = 0;
3769
3770 *uid = make_kuid(&init_user_ns, -2);
3771 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3772 return -EIO;
3773 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3774 p = xdr_inline_decode(xdr, 4);
3775 if (unlikely(!p))
3776 goto out_overflow;
3777 len = be32_to_cpup(p);
3778 p = xdr_inline_decode(xdr, len);
3779 if (unlikely(!p))
3780 goto out_overflow;
3781 if (owner_name != NULL) {
3782 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3783 if (owner_name->data != NULL) {
3784 owner_name->len = len;
3785 ret = NFS_ATTR_FATTR_OWNER_NAME;
3786 }
3787 } else if (len < XDR_MAX_NETOBJ) {
3788 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3789 ret = NFS_ATTR_FATTR_OWNER;
3790 else
3791 dprintk("%s: nfs_map_name_to_uid failed!\n",
3792 __func__);
3793 } else
3794 dprintk("%s: name too long (%u)!\n",
3795 __func__, len);
3796 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3797 }
3798 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3799 return ret;
3800 out_overflow:
3801 print_overflow_msg(__func__, xdr);
3802 return -EIO;
3803 }
3804
3805 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3806 const struct nfs_server *server, kgid_t *gid,
3807 struct nfs4_string *group_name)
3808 {
3809 uint32_t len;
3810 __be32 *p;
3811 int ret = 0;
3812
3813 *gid = make_kgid(&init_user_ns, -2);
3814 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3815 return -EIO;
3816 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3817 p = xdr_inline_decode(xdr, 4);
3818 if (unlikely(!p))
3819 goto out_overflow;
3820 len = be32_to_cpup(p);
3821 p = xdr_inline_decode(xdr, len);
3822 if (unlikely(!p))
3823 goto out_overflow;
3824 if (group_name != NULL) {
3825 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3826 if (group_name->data != NULL) {
3827 group_name->len = len;
3828 ret = NFS_ATTR_FATTR_GROUP_NAME;
3829 }
3830 } else if (len < XDR_MAX_NETOBJ) {
3831 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3832 ret = NFS_ATTR_FATTR_GROUP;
3833 else
3834 dprintk("%s: nfs_map_group_to_gid failed!\n",
3835 __func__);
3836 } else
3837 dprintk("%s: name too long (%u)!\n",
3838 __func__, len);
3839 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3840 }
3841 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3842 return ret;
3843 out_overflow:
3844 print_overflow_msg(__func__, xdr);
3845 return -EIO;
3846 }
3847
3848 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3849 {
3850 uint32_t major = 0, minor = 0;
3851 __be32 *p;
3852 int ret = 0;
3853
3854 *rdev = MKDEV(0,0);
3855 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3856 return -EIO;
3857 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3858 dev_t tmp;
3859
3860 p = xdr_inline_decode(xdr, 8);
3861 if (unlikely(!p))
3862 goto out_overflow;
3863 major = be32_to_cpup(p++);
3864 minor = be32_to_cpup(p);
3865 tmp = MKDEV(major, minor);
3866 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3867 *rdev = tmp;
3868 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3869 ret = NFS_ATTR_FATTR_RDEV;
3870 }
3871 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3872 return ret;
3873 out_overflow:
3874 print_overflow_msg(__func__, xdr);
3875 return -EIO;
3876 }
3877
3878 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3879 {
3880 __be32 *p;
3881 int status = 0;
3882
3883 *res = 0;
3884 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3885 return -EIO;
3886 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3887 p = xdr_inline_decode(xdr, 8);
3888 if (unlikely(!p))
3889 goto out_overflow;
3890 xdr_decode_hyper(p, res);
3891 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3892 }
3893 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3894 return status;
3895 out_overflow:
3896 print_overflow_msg(__func__, xdr);
3897 return -EIO;
3898 }
3899
3900 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3901 {
3902 __be32 *p;
3903 int status = 0;
3904
3905 *res = 0;
3906 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3907 return -EIO;
3908 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3909 p = xdr_inline_decode(xdr, 8);
3910 if (unlikely(!p))
3911 goto out_overflow;
3912 xdr_decode_hyper(p, res);
3913 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3914 }
3915 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3916 return status;
3917 out_overflow:
3918 print_overflow_msg(__func__, xdr);
3919 return -EIO;
3920 }
3921
3922 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3923 {
3924 __be32 *p;
3925 int status = 0;
3926
3927 *res = 0;
3928 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3929 return -EIO;
3930 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3931 p = xdr_inline_decode(xdr, 8);
3932 if (unlikely(!p))
3933 goto out_overflow;
3934 xdr_decode_hyper(p, res);
3935 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3936 }
3937 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3938 return status;
3939 out_overflow:
3940 print_overflow_msg(__func__, xdr);
3941 return -EIO;
3942 }
3943
3944 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3945 {
3946 __be32 *p;
3947 int ret = 0;
3948
3949 *used = 0;
3950 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3951 return -EIO;
3952 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3953 p = xdr_inline_decode(xdr, 8);
3954 if (unlikely(!p))
3955 goto out_overflow;
3956 xdr_decode_hyper(p, used);
3957 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3958 ret = NFS_ATTR_FATTR_SPACE_USED;
3959 }
3960 dprintk("%s: space used=%Lu\n", __func__,
3961 (unsigned long long)*used);
3962 return ret;
3963 out_overflow:
3964 print_overflow_msg(__func__, xdr);
3965 return -EIO;
3966 }
3967
3968 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3969 {
3970 __be32 *p;
3971 uint64_t sec;
3972 uint32_t nsec;
3973
3974 p = xdr_inline_decode(xdr, 12);
3975 if (unlikely(!p))
3976 goto out_overflow;
3977 p = xdr_decode_hyper(p, &sec);
3978 nsec = be32_to_cpup(p);
3979 time->tv_sec = (time_t)sec;
3980 time->tv_nsec = (long)nsec;
3981 return 0;
3982 out_overflow:
3983 print_overflow_msg(__func__, xdr);
3984 return -EIO;
3985 }
3986
3987 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3988 {
3989 int status = 0;
3990
3991 time->tv_sec = 0;
3992 time->tv_nsec = 0;
3993 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3994 return -EIO;
3995 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3996 status = decode_attr_time(xdr, time);
3997 if (status == 0)
3998 status = NFS_ATTR_FATTR_ATIME;
3999 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4000 }
4001 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4002 return status;
4003 }
4004
4005 static int decode_attr_time_metadata(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_METADATA - 1U)))
4012 return -EIO;
4013 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4014 status = decode_attr_time(xdr, time);
4015 if (status == 0)
4016 status = NFS_ATTR_FATTR_CTIME;
4017 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4018 }
4019 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4020 return status;
4021 }
4022
4023 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4024 struct timespec *time)
4025 {
4026 int status = 0;
4027
4028 time->tv_sec = 0;
4029 time->tv_nsec = 0;
4030 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4031 return -EIO;
4032 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4033 status = decode_attr_time(xdr, time);
4034 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4035 }
4036 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4037 (long)time->tv_nsec);
4038 return status;
4039 }
4040
4041 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4042 {
4043 int status = 0;
4044
4045 time->tv_sec = 0;
4046 time->tv_nsec = 0;
4047 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4048 return -EIO;
4049 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4050 status = decode_attr_time(xdr, time);
4051 if (status == 0)
4052 status = NFS_ATTR_FATTR_MTIME;
4053 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4054 }
4055 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4056 return status;
4057 }
4058
4059 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4060 {
4061 unsigned int attrwords = XDR_QUADLEN(attrlen);
4062 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4063
4064 if (unlikely(attrwords != nwords)) {
4065 dprintk("%s: server returned incorrect attribute length: "
4066 "%u %c %u\n",
4067 __func__,
4068 attrwords << 2,
4069 (attrwords < nwords) ? '<' : '>',
4070 nwords << 2);
4071 return -EIO;
4072 }
4073 return 0;
4074 }
4075
4076 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4077 {
4078 __be32 *p;
4079
4080 p = xdr_inline_decode(xdr, 20);
4081 if (unlikely(!p))
4082 goto out_overflow;
4083 cinfo->atomic = be32_to_cpup(p++);
4084 p = xdr_decode_hyper(p, &cinfo->before);
4085 xdr_decode_hyper(p, &cinfo->after);
4086 return 0;
4087 out_overflow:
4088 print_overflow_msg(__func__, xdr);
4089 return -EIO;
4090 }
4091
4092 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4093 {
4094 __be32 *p;
4095 uint32_t supp, acc;
4096 int status;
4097
4098 status = decode_op_hdr(xdr, OP_ACCESS);
4099 if (status)
4100 return status;
4101 p = xdr_inline_decode(xdr, 8);
4102 if (unlikely(!p))
4103 goto out_overflow;
4104 supp = be32_to_cpup(p++);
4105 acc = be32_to_cpup(p);
4106 *supported = supp;
4107 *access = acc;
4108 return 0;
4109 out_overflow:
4110 print_overflow_msg(__func__, xdr);
4111 return -EIO;
4112 }
4113
4114 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4115 {
4116 __be32 *p;
4117
4118 p = xdr_inline_decode(xdr, len);
4119 if (likely(p)) {
4120 memcpy(buf, p, len);
4121 return 0;
4122 }
4123 print_overflow_msg(__func__, xdr);
4124 return -EIO;
4125 }
4126
4127 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4128 {
4129 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4130 }
4131
4132 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4133 {
4134 int status;
4135
4136 status = decode_op_hdr(xdr, OP_CLOSE);
4137 if (status != -EIO)
4138 nfs_increment_open_seqid(status, res->seqid);
4139 if (!status)
4140 status = decode_stateid(xdr, &res->stateid);
4141 return status;
4142 }
4143
4144 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4145 {
4146 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4147 }
4148
4149 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4150 {
4151 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4152 }
4153
4154 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4155 {
4156 int status;
4157
4158 status = decode_op_hdr(xdr, OP_COMMIT);
4159 if (!status)
4160 status = decode_write_verifier(xdr, &res->verf->verifier);
4161 return status;
4162 }
4163
4164 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4165 {
4166 __be32 *p;
4167 uint32_t bmlen;
4168 int status;
4169
4170 status = decode_op_hdr(xdr, OP_CREATE);
4171 if (status)
4172 return status;
4173 if ((status = decode_change_info(xdr, cinfo)))
4174 return status;
4175 p = xdr_inline_decode(xdr, 4);
4176 if (unlikely(!p))
4177 goto out_overflow;
4178 bmlen = be32_to_cpup(p);
4179 p = xdr_inline_decode(xdr, bmlen << 2);
4180 if (likely(p))
4181 return 0;
4182 out_overflow:
4183 print_overflow_msg(__func__, xdr);
4184 return -EIO;
4185 }
4186
4187 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4188 {
4189 unsigned int savep;
4190 uint32_t attrlen, bitmap[3] = {0};
4191 int status;
4192
4193 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4194 goto xdr_error;
4195 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4196 goto xdr_error;
4197 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4198 goto xdr_error;
4199 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4200 goto xdr_error;
4201 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4202 &res->fh_expire_type)) != 0)
4203 goto xdr_error;
4204 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4205 goto xdr_error;
4206 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4207 goto xdr_error;
4208 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4209 goto xdr_error;
4210 status = verify_attr_len(xdr, savep, attrlen);
4211 xdr_error:
4212 dprintk("%s: xdr returned %d!\n", __func__, -status);
4213 return status;
4214 }
4215
4216 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4217 {
4218 unsigned int savep;
4219 uint32_t attrlen, bitmap[3] = {0};
4220 int status;
4221
4222 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4223 goto xdr_error;
4224 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4225 goto xdr_error;
4226 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4227 goto xdr_error;
4228
4229 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4230 goto xdr_error;
4231 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4232 goto xdr_error;
4233 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4234 goto xdr_error;
4235 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4236 goto xdr_error;
4237 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4238 goto xdr_error;
4239 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4240 goto xdr_error;
4241
4242 status = verify_attr_len(xdr, savep, attrlen);
4243 xdr_error:
4244 dprintk("%s: xdr returned %d!\n", __func__, -status);
4245 return status;
4246 }
4247
4248 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4249 {
4250 unsigned int savep;
4251 uint32_t attrlen, bitmap[3] = {0};
4252 int status;
4253
4254 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4255 goto xdr_error;
4256 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4257 goto xdr_error;
4258 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4259 goto xdr_error;
4260
4261 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4262 goto xdr_error;
4263 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4264 goto xdr_error;
4265
4266 status = verify_attr_len(xdr, savep, attrlen);
4267 xdr_error:
4268 dprintk("%s: xdr returned %d!\n", __func__, -status);
4269 return status;
4270 }
4271
4272 static int decode_threshold_hint(struct xdr_stream *xdr,
4273 uint32_t *bitmap,
4274 uint64_t *res,
4275 uint32_t hint_bit)
4276 {
4277 __be32 *p;
4278
4279 *res = 0;
4280 if (likely(bitmap[0] & hint_bit)) {
4281 p = xdr_inline_decode(xdr, 8);
4282 if (unlikely(!p))
4283 goto out_overflow;
4284 xdr_decode_hyper(p, res);
4285 }
4286 return 0;
4287 out_overflow:
4288 print_overflow_msg(__func__, xdr);
4289 return -EIO;
4290 }
4291
4292 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4293 struct nfs4_threshold *res)
4294 {
4295 __be32 *p;
4296 unsigned int savep;
4297 uint32_t bitmap[3] = {0,}, attrlen;
4298 int status;
4299
4300 /* layout type */
4301 p = xdr_inline_decode(xdr, 4);
4302 if (unlikely(!p)) {
4303 print_overflow_msg(__func__, xdr);
4304 return -EIO;
4305 }
4306 res->l_type = be32_to_cpup(p);
4307
4308 /* thi_hintset bitmap */
4309 status = decode_attr_bitmap(xdr, bitmap);
4310 if (status < 0)
4311 goto xdr_error;
4312
4313 /* thi_hintlist length */
4314 status = decode_attr_length(xdr, &attrlen, &savep);
4315 if (status < 0)
4316 goto xdr_error;
4317 /* thi_hintlist */
4318 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4319 if (status < 0)
4320 goto xdr_error;
4321 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4322 if (status < 0)
4323 goto xdr_error;
4324 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4325 THRESHOLD_RD_IO);
4326 if (status < 0)
4327 goto xdr_error;
4328 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4329 THRESHOLD_WR_IO);
4330 if (status < 0)
4331 goto xdr_error;
4332
4333 status = verify_attr_len(xdr, savep, attrlen);
4334 res->bm = bitmap[0];
4335
4336 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4337 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4338 res->wr_io_sz);
4339 xdr_error:
4340 dprintk("%s ret=%d!\n", __func__, status);
4341 return status;
4342 }
4343
4344 /*
4345 * Thresholds on pNFS direct I/O vrs MDS I/O
4346 */
4347 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4348 uint32_t *bitmap,
4349 struct nfs4_threshold *res)
4350 {
4351 __be32 *p;
4352 int status = 0;
4353 uint32_t num;
4354
4355 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4356 return -EIO;
4357 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4358 /* Did the server return an unrequested attribute? */
4359 if (unlikely(res == NULL))
4360 return -EREMOTEIO;
4361 p = xdr_inline_decode(xdr, 4);
4362 if (unlikely(!p))
4363 goto out_overflow;
4364 num = be32_to_cpup(p);
4365 if (num == 0)
4366 return 0;
4367 if (num > 1)
4368 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4369 "drivers per filesystem not supported\n",
4370 __func__);
4371
4372 status = decode_first_threshold_item4(xdr, res);
4373 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4374 }
4375 return status;
4376 out_overflow:
4377 print_overflow_msg(__func__, xdr);
4378 return -EIO;
4379 }
4380
4381 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4382 struct nfs_fattr *fattr, struct nfs_fh *fh,
4383 struct nfs4_fs_locations *fs_loc,
4384 const struct nfs_server *server)
4385 {
4386 int status;
4387 umode_t fmode = 0;
4388 uint32_t type;
4389 int32_t err;
4390
4391 status = decode_attr_type(xdr, bitmap, &type);
4392 if (status < 0)
4393 goto xdr_error;
4394 fattr->mode = 0;
4395 if (status != 0) {
4396 fattr->mode |= nfs_type2fmt[type];
4397 fattr->valid |= status;
4398 }
4399
4400 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4401 if (status < 0)
4402 goto xdr_error;
4403 fattr->valid |= status;
4404
4405 status = decode_attr_size(xdr, bitmap, &fattr->size);
4406 if (status < 0)
4407 goto xdr_error;
4408 fattr->valid |= status;
4409
4410 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4411 if (status < 0)
4412 goto xdr_error;
4413 fattr->valid |= status;
4414
4415 err = 0;
4416 status = decode_attr_error(xdr, bitmap, &err);
4417 if (status < 0)
4418 goto xdr_error;
4419
4420 status = decode_attr_filehandle(xdr, bitmap, fh);
4421 if (status < 0)
4422 goto xdr_error;
4423
4424 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4425 if (status < 0)
4426 goto xdr_error;
4427 fattr->valid |= status;
4428
4429 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4430 if (status < 0)
4431 goto xdr_error;
4432 fattr->valid |= status;
4433
4434 status = decode_attr_mode(xdr, bitmap, &fmode);
4435 if (status < 0)
4436 goto xdr_error;
4437 if (status != 0) {
4438 fattr->mode |= fmode;
4439 fattr->valid |= status;
4440 }
4441
4442 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4443 if (status < 0)
4444 goto xdr_error;
4445 fattr->valid |= status;
4446
4447 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4448 if (status < 0)
4449 goto xdr_error;
4450 fattr->valid |= status;
4451
4452 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4453 if (status < 0)
4454 goto xdr_error;
4455 fattr->valid |= status;
4456
4457 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4458 if (status < 0)
4459 goto xdr_error;
4460 fattr->valid |= status;
4461
4462 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4463 if (status < 0)
4464 goto xdr_error;
4465 fattr->valid |= status;
4466
4467 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4468 if (status < 0)
4469 goto xdr_error;
4470 fattr->valid |= status;
4471
4472 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4473 if (status < 0)
4474 goto xdr_error;
4475 fattr->valid |= status;
4476
4477 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4478 if (status < 0)
4479 goto xdr_error;
4480 fattr->valid |= status;
4481
4482 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4483 if (status < 0)
4484 goto xdr_error;
4485 fattr->valid |= status;
4486
4487 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4488 if (status < 0)
4489 goto xdr_error;
4490
4491 xdr_error:
4492 dprintk("%s: xdr returned %d\n", __func__, -status);
4493 return status;
4494 }
4495
4496 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4497 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4498 const struct nfs_server *server)
4499 {
4500 unsigned int savep;
4501 uint32_t attrlen,
4502 bitmap[3] = {0};
4503 int status;
4504
4505 status = decode_op_hdr(xdr, OP_GETATTR);
4506 if (status < 0)
4507 goto xdr_error;
4508
4509 status = decode_attr_bitmap(xdr, bitmap);
4510 if (status < 0)
4511 goto xdr_error;
4512
4513 status = decode_attr_length(xdr, &attrlen, &savep);
4514 if (status < 0)
4515 goto xdr_error;
4516
4517 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4518 if (status < 0)
4519 goto xdr_error;
4520
4521 status = verify_attr_len(xdr, savep, attrlen);
4522 xdr_error:
4523 dprintk("%s: xdr returned %d\n", __func__, -status);
4524 return status;
4525 }
4526
4527 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4528 const struct nfs_server *server)
4529 {
4530 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4531 }
4532
4533 /*
4534 * Decode potentially multiple layout types. Currently we only support
4535 * one layout driver per file system.
4536 */
4537 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4538 uint32_t *layouttype)
4539 {
4540 uint32_t *p;
4541 int num;
4542
4543 p = xdr_inline_decode(xdr, 4);
4544 if (unlikely(!p))
4545 goto out_overflow;
4546 num = be32_to_cpup(p);
4547
4548 /* pNFS is not supported by the underlying file system */
4549 if (num == 0) {
4550 *layouttype = 0;
4551 return 0;
4552 }
4553 if (num > 1)
4554 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4555 "drivers per filesystem not supported\n", __func__);
4556
4557 /* Decode and set first layout type, move xdr->p past unused types */
4558 p = xdr_inline_decode(xdr, num * 4);
4559 if (unlikely(!p))
4560 goto out_overflow;
4561 *layouttype = be32_to_cpup(p);
4562 return 0;
4563 out_overflow:
4564 print_overflow_msg(__func__, xdr);
4565 return -EIO;
4566 }
4567
4568 /*
4569 * The type of file system exported.
4570 * Note we must ensure that layouttype is set in any non-error case.
4571 */
4572 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4573 uint32_t *layouttype)
4574 {
4575 int status = 0;
4576
4577 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4578 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4579 return -EIO;
4580 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4581 status = decode_first_pnfs_layout_type(xdr, layouttype);
4582 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4583 } else
4584 *layouttype = 0;
4585 return status;
4586 }
4587
4588 /*
4589 * The prefered block size for layout directed io
4590 */
4591 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4592 uint32_t *res)
4593 {
4594 __be32 *p;
4595
4596 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4597 *res = 0;
4598 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4599 p = xdr_inline_decode(xdr, 4);
4600 if (unlikely(!p)) {
4601 print_overflow_msg(__func__, xdr);
4602 return -EIO;
4603 }
4604 *res = be32_to_cpup(p);
4605 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4606 }
4607 return 0;
4608 }
4609
4610 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4611 {
4612 unsigned int savep;
4613 uint32_t attrlen, bitmap[3];
4614 int status;
4615
4616 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4617 goto xdr_error;
4618 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4619 goto xdr_error;
4620 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4621 goto xdr_error;
4622
4623 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4624
4625 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4626 goto xdr_error;
4627 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4628 goto xdr_error;
4629 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4630 goto xdr_error;
4631 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4632 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4633 goto xdr_error;
4634 fsinfo->wtpref = fsinfo->wtmax;
4635 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4636 if (status != 0)
4637 goto xdr_error;
4638 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4639 if (status != 0)
4640 goto xdr_error;
4641 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4642 if (status)
4643 goto xdr_error;
4644
4645 status = verify_attr_len(xdr, savep, attrlen);
4646 xdr_error:
4647 dprintk("%s: xdr returned %d!\n", __func__, -status);
4648 return status;
4649 }
4650
4651 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4652 {
4653 __be32 *p;
4654 uint32_t len;
4655 int status;
4656
4657 /* Zero handle first to allow comparisons */
4658 memset(fh, 0, sizeof(*fh));
4659
4660 status = decode_op_hdr(xdr, OP_GETFH);
4661 if (status)
4662 return status;
4663
4664 p = xdr_inline_decode(xdr, 4);
4665 if (unlikely(!p))
4666 goto out_overflow;
4667 len = be32_to_cpup(p);
4668 if (len > NFS4_FHSIZE)
4669 return -EIO;
4670 fh->size = len;
4671 p = xdr_inline_decode(xdr, len);
4672 if (unlikely(!p))
4673 goto out_overflow;
4674 memcpy(fh->data, p, len);
4675 return 0;
4676 out_overflow:
4677 print_overflow_msg(__func__, xdr);
4678 return -EIO;
4679 }
4680
4681 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4682 {
4683 int status;
4684
4685 status = decode_op_hdr(xdr, OP_LINK);
4686 if (status)
4687 return status;
4688 return decode_change_info(xdr, cinfo);
4689 }
4690
4691 /*
4692 * We create the owner, so we know a proper owner.id length is 4.
4693 */
4694 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4695 {
4696 uint64_t offset, length, clientid;
4697 __be32 *p;
4698 uint32_t namelen, type;
4699
4700 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4701 if (unlikely(!p))
4702 goto out_overflow;
4703 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4704 p = xdr_decode_hyper(p, &length);
4705 type = be32_to_cpup(p++); /* 4 byte read */
4706 if (fl != NULL) { /* manipulate file lock */
4707 fl->fl_start = (loff_t)offset;
4708 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4709 if (length == ~(uint64_t)0)
4710 fl->fl_end = OFFSET_MAX;
4711 fl->fl_type = F_WRLCK;
4712 if (type & 1)
4713 fl->fl_type = F_RDLCK;
4714 fl->fl_pid = 0;
4715 }
4716 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4717 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4718 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4719 if (likely(p))
4720 return -NFS4ERR_DENIED;
4721 out_overflow:
4722 print_overflow_msg(__func__, xdr);
4723 return -EIO;
4724 }
4725
4726 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4727 {
4728 int status;
4729
4730 status = decode_op_hdr(xdr, OP_LOCK);
4731 if (status == -EIO)
4732 goto out;
4733 if (status == 0) {
4734 status = decode_stateid(xdr, &res->stateid);
4735 if (unlikely(status))
4736 goto out;
4737 } else if (status == -NFS4ERR_DENIED)
4738 status = decode_lock_denied(xdr, NULL);
4739 if (res->open_seqid != NULL)
4740 nfs_increment_open_seqid(status, res->open_seqid);
4741 nfs_increment_lock_seqid(status, res->lock_seqid);
4742 out:
4743 return status;
4744 }
4745
4746 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4747 {
4748 int status;
4749 status = decode_op_hdr(xdr, OP_LOCKT);
4750 if (status == -NFS4ERR_DENIED)
4751 return decode_lock_denied(xdr, res->denied);
4752 return status;
4753 }
4754
4755 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4756 {
4757 int status;
4758
4759 status = decode_op_hdr(xdr, OP_LOCKU);
4760 if (status != -EIO)
4761 nfs_increment_lock_seqid(status, res->seqid);
4762 if (status == 0)
4763 status = decode_stateid(xdr, &res->stateid);
4764 return status;
4765 }
4766
4767 static int decode_release_lockowner(struct xdr_stream *xdr)
4768 {
4769 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4770 }
4771
4772 static int decode_lookup(struct xdr_stream *xdr)
4773 {
4774 return decode_op_hdr(xdr, OP_LOOKUP);
4775 }
4776
4777 /* This is too sick! */
4778 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4779 {
4780 __be32 *p;
4781 uint32_t limit_type, nblocks, blocksize;
4782
4783 p = xdr_inline_decode(xdr, 12);
4784 if (unlikely(!p))
4785 goto out_overflow;
4786 limit_type = be32_to_cpup(p++);
4787 switch (limit_type) {
4788 case 1:
4789 xdr_decode_hyper(p, maxsize);
4790 break;
4791 case 2:
4792 nblocks = be32_to_cpup(p++);
4793 blocksize = be32_to_cpup(p);
4794 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4795 }
4796 return 0;
4797 out_overflow:
4798 print_overflow_msg(__func__, xdr);
4799 return -EIO;
4800 }
4801
4802 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4803 {
4804 __be32 *p;
4805 uint32_t delegation_type;
4806 int status;
4807
4808 p = xdr_inline_decode(xdr, 4);
4809 if (unlikely(!p))
4810 goto out_overflow;
4811 delegation_type = be32_to_cpup(p);
4812 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4813 res->delegation_type = 0;
4814 return 0;
4815 }
4816 status = decode_stateid(xdr, &res->delegation);
4817 if (unlikely(status))
4818 return status;
4819 p = xdr_inline_decode(xdr, 4);
4820 if (unlikely(!p))
4821 goto out_overflow;
4822 res->do_recall = be32_to_cpup(p);
4823
4824 switch (delegation_type) {
4825 case NFS4_OPEN_DELEGATE_READ:
4826 res->delegation_type = FMODE_READ;
4827 break;
4828 case NFS4_OPEN_DELEGATE_WRITE:
4829 res->delegation_type = FMODE_WRITE|FMODE_READ;
4830 if (decode_space_limit(xdr, &res->maxsize) < 0)
4831 return -EIO;
4832 }
4833 return decode_ace(xdr, NULL, res->server->nfs_client);
4834 out_overflow:
4835 print_overflow_msg(__func__, xdr);
4836 return -EIO;
4837 }
4838
4839 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4840 {
4841 __be32 *p;
4842 uint32_t savewords, bmlen, i;
4843 int status;
4844
4845 status = decode_op_hdr(xdr, OP_OPEN);
4846 if (status != -EIO)
4847 nfs_increment_open_seqid(status, res->seqid);
4848 if (!status)
4849 status = decode_stateid(xdr, &res->stateid);
4850 if (unlikely(status))
4851 return status;
4852
4853 decode_change_info(xdr, &res->cinfo);
4854
4855 p = xdr_inline_decode(xdr, 8);
4856 if (unlikely(!p))
4857 goto out_overflow;
4858 res->rflags = be32_to_cpup(p++);
4859 bmlen = be32_to_cpup(p);
4860 if (bmlen > 10)
4861 goto xdr_error;
4862
4863 p = xdr_inline_decode(xdr, bmlen << 2);
4864 if (unlikely(!p))
4865 goto out_overflow;
4866 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4867 for (i = 0; i < savewords; ++i)
4868 res->attrset[i] = be32_to_cpup(p++);
4869 for (; i < NFS4_BITMAP_SIZE; i++)
4870 res->attrset[i] = 0;
4871
4872 return decode_delegation(xdr, res);
4873 xdr_error:
4874 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4875 return -EIO;
4876 out_overflow:
4877 print_overflow_msg(__func__, xdr);
4878 return -EIO;
4879 }
4880
4881 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4882 {
4883 int status;
4884
4885 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4886 if (status != -EIO)
4887 nfs_increment_open_seqid(status, res->seqid);
4888 if (!status)
4889 status = decode_stateid(xdr, &res->stateid);
4890 return status;
4891 }
4892
4893 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4894 {
4895 int status;
4896
4897 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4898 if (status != -EIO)
4899 nfs_increment_open_seqid(status, res->seqid);
4900 if (!status)
4901 status = decode_stateid(xdr, &res->stateid);
4902 return status;
4903 }
4904
4905 static int decode_putfh(struct xdr_stream *xdr)
4906 {
4907 return decode_op_hdr(xdr, OP_PUTFH);
4908 }
4909
4910 static int decode_putrootfh(struct xdr_stream *xdr)
4911 {
4912 return decode_op_hdr(xdr, OP_PUTROOTFH);
4913 }
4914
4915 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4916 {
4917 __be32 *p;
4918 uint32_t count, eof, recvd;
4919 int status;
4920
4921 status = decode_op_hdr(xdr, OP_READ);
4922 if (status)
4923 return status;
4924 p = xdr_inline_decode(xdr, 8);
4925 if (unlikely(!p))
4926 goto out_overflow;
4927 eof = be32_to_cpup(p++);
4928 count = be32_to_cpup(p);
4929 recvd = xdr_read_pages(xdr, count);
4930 if (count > recvd) {
4931 dprintk("NFS: server cheating in read reply: "
4932 "count %u > recvd %u\n", count, recvd);
4933 count = recvd;
4934 eof = 0;
4935 }
4936 res->eof = eof;
4937 res->count = count;
4938 return 0;
4939 out_overflow:
4940 print_overflow_msg(__func__, xdr);
4941 return -EIO;
4942 }
4943
4944 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4945 {
4946 int status;
4947 __be32 verf[2];
4948
4949 status = decode_op_hdr(xdr, OP_READDIR);
4950 if (!status)
4951 status = decode_verifier(xdr, readdir->verifier.data);
4952 if (unlikely(status))
4953 return status;
4954 memcpy(verf, readdir->verifier.data, sizeof(verf));
4955 dprintk("%s: verifier = %08x:%08x\n",
4956 __func__, verf[0], verf[1]);
4957 return xdr_read_pages(xdr, xdr->buf->page_len);
4958 }
4959
4960 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4961 {
4962 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4963 u32 len, recvd;
4964 __be32 *p;
4965 int status;
4966
4967 status = decode_op_hdr(xdr, OP_READLINK);
4968 if (status)
4969 return status;
4970
4971 /* Convert length of symlink */
4972 p = xdr_inline_decode(xdr, 4);
4973 if (unlikely(!p))
4974 goto out_overflow;
4975 len = be32_to_cpup(p);
4976 if (len >= rcvbuf->page_len || len <= 0) {
4977 dprintk("nfs: server returned giant symlink!\n");
4978 return -ENAMETOOLONG;
4979 }
4980 recvd = xdr_read_pages(xdr, len);
4981 if (recvd < len) {
4982 dprintk("NFS: server cheating in readlink reply: "
4983 "count %u > recvd %u\n", len, recvd);
4984 return -EIO;
4985 }
4986 /*
4987 * The XDR encode routine has set things up so that
4988 * the link text will be copied directly into the
4989 * buffer. We just have to do overflow-checking,
4990 * and and null-terminate the text (the VFS expects
4991 * null-termination).
4992 */
4993 xdr_terminate_string(rcvbuf, len);
4994 return 0;
4995 out_overflow:
4996 print_overflow_msg(__func__, xdr);
4997 return -EIO;
4998 }
4999
5000 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5001 {
5002 int status;
5003
5004 status = decode_op_hdr(xdr, OP_REMOVE);
5005 if (status)
5006 goto out;
5007 status = decode_change_info(xdr, cinfo);
5008 out:
5009 return status;
5010 }
5011
5012 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5013 struct nfs4_change_info *new_cinfo)
5014 {
5015 int status;
5016
5017 status = decode_op_hdr(xdr, OP_RENAME);
5018 if (status)
5019 goto out;
5020 if ((status = decode_change_info(xdr, old_cinfo)))
5021 goto out;
5022 status = decode_change_info(xdr, new_cinfo);
5023 out:
5024 return status;
5025 }
5026
5027 static int decode_renew(struct xdr_stream *xdr)
5028 {
5029 return decode_op_hdr(xdr, OP_RENEW);
5030 }
5031
5032 static int
5033 decode_restorefh(struct xdr_stream *xdr)
5034 {
5035 return decode_op_hdr(xdr, OP_RESTOREFH);
5036 }
5037
5038 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5039 struct nfs_getaclres *res)
5040 {
5041 unsigned int savep;
5042 uint32_t attrlen,
5043 bitmap[3] = {0};
5044 int status;
5045 unsigned int pg_offset;
5046
5047 res->acl_len = 0;
5048 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5049 goto out;
5050
5051 xdr_enter_page(xdr, xdr->buf->page_len);
5052
5053 /* Calculate the offset of the page data */
5054 pg_offset = xdr->buf->head[0].iov_len;
5055
5056 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5057 goto out;
5058 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5059 goto out;
5060
5061 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5062 return -EIO;
5063 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5064
5065 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5066 * are stored with the acl data to handle the problem of
5067 * variable length bitmaps.*/
5068 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5069 res->acl_len = attrlen;
5070
5071 /* Check for receive buffer overflow */
5072 if (res->acl_len > (xdr->nwords << 2) ||
5073 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5074 res->acl_flags |= NFS4_ACL_TRUNC;
5075 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5076 attrlen, xdr->nwords << 2);
5077 }
5078 } else
5079 status = -EOPNOTSUPP;
5080
5081 out:
5082 return status;
5083 }
5084
5085 static int
5086 decode_savefh(struct xdr_stream *xdr)
5087 {
5088 return decode_op_hdr(xdr, OP_SAVEFH);
5089 }
5090
5091 static int decode_setattr(struct xdr_stream *xdr)
5092 {
5093 __be32 *p;
5094 uint32_t bmlen;
5095 int status;
5096
5097 status = decode_op_hdr(xdr, OP_SETATTR);
5098 if (status)
5099 return status;
5100 p = xdr_inline_decode(xdr, 4);
5101 if (unlikely(!p))
5102 goto out_overflow;
5103 bmlen = be32_to_cpup(p);
5104 p = xdr_inline_decode(xdr, bmlen << 2);
5105 if (likely(p))
5106 return 0;
5107 out_overflow:
5108 print_overflow_msg(__func__, xdr);
5109 return -EIO;
5110 }
5111
5112 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5113 {
5114 __be32 *p;
5115 uint32_t opnum;
5116 int32_t nfserr;
5117
5118 p = xdr_inline_decode(xdr, 8);
5119 if (unlikely(!p))
5120 goto out_overflow;
5121 opnum = be32_to_cpup(p++);
5122 if (opnum != OP_SETCLIENTID) {
5123 dprintk("nfs: decode_setclientid: Server returned operation"
5124 " %d\n", opnum);
5125 return -EIO;
5126 }
5127 nfserr = be32_to_cpup(p);
5128 if (nfserr == NFS_OK) {
5129 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5130 if (unlikely(!p))
5131 goto out_overflow;
5132 p = xdr_decode_hyper(p, &res->clientid);
5133 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5134 } else if (nfserr == NFSERR_CLID_INUSE) {
5135 uint32_t len;
5136
5137 /* skip netid string */
5138 p = xdr_inline_decode(xdr, 4);
5139 if (unlikely(!p))
5140 goto out_overflow;
5141 len = be32_to_cpup(p);
5142 p = xdr_inline_decode(xdr, len);
5143 if (unlikely(!p))
5144 goto out_overflow;
5145
5146 /* skip uaddr string */
5147 p = xdr_inline_decode(xdr, 4);
5148 if (unlikely(!p))
5149 goto out_overflow;
5150 len = be32_to_cpup(p);
5151 p = xdr_inline_decode(xdr, len);
5152 if (unlikely(!p))
5153 goto out_overflow;
5154 return -NFSERR_CLID_INUSE;
5155 } else
5156 return nfs4_stat_to_errno(nfserr);
5157
5158 return 0;
5159 out_overflow:
5160 print_overflow_msg(__func__, xdr);
5161 return -EIO;
5162 }
5163
5164 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5165 {
5166 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5167 }
5168
5169 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5170 {
5171 __be32 *p;
5172 int status;
5173
5174 status = decode_op_hdr(xdr, OP_WRITE);
5175 if (status)
5176 return status;
5177
5178 p = xdr_inline_decode(xdr, 8);
5179 if (unlikely(!p))
5180 goto out_overflow;
5181 res->count = be32_to_cpup(p++);
5182 res->verf->committed = be32_to_cpup(p++);
5183 return decode_write_verifier(xdr, &res->verf->verifier);
5184 out_overflow:
5185 print_overflow_msg(__func__, xdr);
5186 return -EIO;
5187 }
5188
5189 static int decode_delegreturn(struct xdr_stream *xdr)
5190 {
5191 return decode_op_hdr(xdr, OP_DELEGRETURN);
5192 }
5193
5194 static int decode_secinfo_gss(struct xdr_stream *xdr,
5195 struct nfs4_secinfo4 *flavor)
5196 {
5197 u32 oid_len;
5198 __be32 *p;
5199
5200 p = xdr_inline_decode(xdr, 4);
5201 if (unlikely(!p))
5202 goto out_overflow;
5203 oid_len = be32_to_cpup(p);
5204 if (oid_len > GSS_OID_MAX_LEN)
5205 goto out_err;
5206
5207 p = xdr_inline_decode(xdr, oid_len);
5208 if (unlikely(!p))
5209 goto out_overflow;
5210 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5211 flavor->flavor_info.oid.len = oid_len;
5212
5213 p = xdr_inline_decode(xdr, 8);
5214 if (unlikely(!p))
5215 goto out_overflow;
5216 flavor->flavor_info.qop = be32_to_cpup(p++);
5217 flavor->flavor_info.service = be32_to_cpup(p);
5218
5219 return 0;
5220
5221 out_overflow:
5222 print_overflow_msg(__func__, xdr);
5223 return -EIO;
5224 out_err:
5225 return -EINVAL;
5226 }
5227
5228 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5229 {
5230 struct nfs4_secinfo4 *sec_flavor;
5231 unsigned int i, num_flavors;
5232 int status;
5233 __be32 *p;
5234
5235 p = xdr_inline_decode(xdr, 4);
5236 if (unlikely(!p))
5237 goto out_overflow;
5238
5239 res->flavors->num_flavors = 0;
5240 num_flavors = be32_to_cpup(p);
5241
5242 for (i = 0; i < num_flavors; i++) {
5243 sec_flavor = &res->flavors->flavors[i];
5244 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5245 break;
5246
5247 p = xdr_inline_decode(xdr, 4);
5248 if (unlikely(!p))
5249 goto out_overflow;
5250 sec_flavor->flavor = be32_to_cpup(p);
5251
5252 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5253 status = decode_secinfo_gss(xdr, sec_flavor);
5254 if (status)
5255 goto out;
5256 }
5257 res->flavors->num_flavors++;
5258 }
5259
5260 status = 0;
5261 out:
5262 return status;
5263 out_overflow:
5264 print_overflow_msg(__func__, xdr);
5265 return -EIO;
5266 }
5267
5268 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5269 {
5270 int status = decode_op_hdr(xdr, OP_SECINFO);
5271 if (status)
5272 return status;
5273 return decode_secinfo_common(xdr, res);
5274 }
5275
5276 #if defined(CONFIG_NFS_V4_1)
5277 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5278 {
5279 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5280 if (status)
5281 return status;
5282 return decode_secinfo_common(xdr, res);
5283 }
5284
5285 static int decode_exchange_id(struct xdr_stream *xdr,
5286 struct nfs41_exchange_id_res *res)
5287 {
5288 __be32 *p;
5289 uint32_t dummy;
5290 char *dummy_str;
5291 int status;
5292 uint32_t impl_id_count;
5293
5294 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5295 if (status)
5296 return status;
5297
5298 p = xdr_inline_decode(xdr, 8);
5299 if (unlikely(!p))
5300 goto out_overflow;
5301 xdr_decode_hyper(p, &res->clientid);
5302 p = xdr_inline_decode(xdr, 12);
5303 if (unlikely(!p))
5304 goto out_overflow;
5305 res->seqid = be32_to_cpup(p++);
5306 res->flags = be32_to_cpup(p++);
5307
5308 /* We ask for SP4_NONE */
5309 dummy = be32_to_cpup(p);
5310 if (dummy != SP4_NONE)
5311 return -EIO;
5312
5313 /* server_owner4.so_minor_id */
5314 p = xdr_inline_decode(xdr, 8);
5315 if (unlikely(!p))
5316 goto out_overflow;
5317 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5318
5319 /* server_owner4.so_major_id */
5320 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5321 if (unlikely(status))
5322 return status;
5323 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5324 return -EIO;
5325 memcpy(res->server_owner->major_id, dummy_str, dummy);
5326 res->server_owner->major_id_sz = dummy;
5327
5328 /* server_scope4 */
5329 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5330 if (unlikely(status))
5331 return status;
5332 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5333 return -EIO;
5334 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5335 res->server_scope->server_scope_sz = dummy;
5336
5337 /* Implementation Id */
5338 p = xdr_inline_decode(xdr, 4);
5339 if (unlikely(!p))
5340 goto out_overflow;
5341 impl_id_count = be32_to_cpup(p++);
5342
5343 if (impl_id_count) {
5344 /* nii_domain */
5345 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5346 if (unlikely(status))
5347 return status;
5348 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5349 return -EIO;
5350 memcpy(res->impl_id->domain, dummy_str, dummy);
5351
5352 /* nii_name */
5353 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5354 if (unlikely(status))
5355 return status;
5356 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5357 return -EIO;
5358 memcpy(res->impl_id->name, dummy_str, dummy);
5359
5360 /* nii_date */
5361 p = xdr_inline_decode(xdr, 12);
5362 if (unlikely(!p))
5363 goto out_overflow;
5364 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5365 res->impl_id->date.nseconds = be32_to_cpup(p);
5366
5367 /* if there's more than one entry, ignore the rest */
5368 }
5369 return 0;
5370 out_overflow:
5371 print_overflow_msg(__func__, xdr);
5372 return -EIO;
5373 }
5374
5375 static int decode_chan_attrs(struct xdr_stream *xdr,
5376 struct nfs4_channel_attrs *attrs)
5377 {
5378 __be32 *p;
5379 u32 nr_attrs, val;
5380
5381 p = xdr_inline_decode(xdr, 28);
5382 if (unlikely(!p))
5383 goto out_overflow;
5384 val = be32_to_cpup(p++); /* headerpadsz */
5385 if (val)
5386 return -EINVAL; /* no support for header padding yet */
5387 attrs->max_rqst_sz = be32_to_cpup(p++);
5388 attrs->max_resp_sz = be32_to_cpup(p++);
5389 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5390 attrs->max_ops = be32_to_cpup(p++);
5391 attrs->max_reqs = be32_to_cpup(p++);
5392 nr_attrs = be32_to_cpup(p);
5393 if (unlikely(nr_attrs > 1)) {
5394 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5395 "count %u\n", __func__, nr_attrs);
5396 return -EINVAL;
5397 }
5398 if (nr_attrs == 1) {
5399 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5400 if (unlikely(!p))
5401 goto out_overflow;
5402 }
5403 return 0;
5404 out_overflow:
5405 print_overflow_msg(__func__, xdr);
5406 return -EIO;
5407 }
5408
5409 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5410 {
5411 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5412 }
5413
5414 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5415 struct nfs41_bind_conn_to_session_res *res)
5416 {
5417 __be32 *p;
5418 int status;
5419
5420 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5421 if (!status)
5422 status = decode_sessionid(xdr, &res->session->sess_id);
5423 if (unlikely(status))
5424 return status;
5425
5426 /* dir flags, rdma mode bool */
5427 p = xdr_inline_decode(xdr, 8);
5428 if (unlikely(!p))
5429 goto out_overflow;
5430
5431 res->dir = be32_to_cpup(p++);
5432 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5433 return -EIO;
5434 if (be32_to_cpup(p) == 0)
5435 res->use_conn_in_rdma_mode = false;
5436 else
5437 res->use_conn_in_rdma_mode = true;
5438
5439 return 0;
5440 out_overflow:
5441 print_overflow_msg(__func__, xdr);
5442 return -EIO;
5443 }
5444
5445 static int decode_create_session(struct xdr_stream *xdr,
5446 struct nfs41_create_session_res *res)
5447 {
5448 __be32 *p;
5449 int status;
5450 struct nfs_client *clp = res->client;
5451 struct nfs4_session *session = clp->cl_session;
5452
5453 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5454 if (!status)
5455 status = decode_sessionid(xdr, &session->sess_id);
5456 if (unlikely(status))
5457 return status;
5458
5459 /* seqid, flags */
5460 p = xdr_inline_decode(xdr, 8);
5461 if (unlikely(!p))
5462 goto out_overflow;
5463 clp->cl_seqid = be32_to_cpup(p++);
5464 session->flags = be32_to_cpup(p);
5465
5466 /* Channel attributes */
5467 status = decode_chan_attrs(xdr, &session->fc_attrs);
5468 if (!status)
5469 status = decode_chan_attrs(xdr, &session->bc_attrs);
5470 return status;
5471 out_overflow:
5472 print_overflow_msg(__func__, xdr);
5473 return -EIO;
5474 }
5475
5476 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5477 {
5478 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5479 }
5480
5481 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5482 {
5483 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5484 }
5485
5486 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5487 {
5488 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5489 }
5490 #endif /* CONFIG_NFS_V4_1 */
5491
5492 static int decode_sequence(struct xdr_stream *xdr,
5493 struct nfs4_sequence_res *res,
5494 struct rpc_rqst *rqstp)
5495 {
5496 #if defined(CONFIG_NFS_V4_1)
5497 struct nfs4_session *session;
5498 struct nfs4_sessionid id;
5499 u32 dummy;
5500 int status;
5501 __be32 *p;
5502
5503 if (res->sr_slot == NULL)
5504 return 0;
5505
5506 status = decode_op_hdr(xdr, OP_SEQUENCE);
5507 if (!status)
5508 status = decode_sessionid(xdr, &id);
5509 if (unlikely(status))
5510 goto out_err;
5511
5512 /*
5513 * If the server returns different values for sessionID, slotID or
5514 * sequence number, the server is looney tunes.
5515 */
5516 status = -EREMOTEIO;
5517 session = res->sr_slot->table->session;
5518
5519 if (memcmp(id.data, session->sess_id.data,
5520 NFS4_MAX_SESSIONID_LEN)) {
5521 dprintk("%s Invalid session id\n", __func__);
5522 goto out_err;
5523 }
5524
5525 p = xdr_inline_decode(xdr, 20);
5526 if (unlikely(!p))
5527 goto out_overflow;
5528
5529 /* seqid */
5530 dummy = be32_to_cpup(p++);
5531 if (dummy != res->sr_slot->seq_nr) {
5532 dprintk("%s Invalid sequence number\n", __func__);
5533 goto out_err;
5534 }
5535 /* slot id */
5536 dummy = be32_to_cpup(p++);
5537 if (dummy != res->sr_slot->slot_nr) {
5538 dprintk("%s Invalid slot id\n", __func__);
5539 goto out_err;
5540 }
5541 /* highest slot id */
5542 res->sr_highest_slotid = be32_to_cpup(p++);
5543 /* target highest slot id */
5544 res->sr_target_highest_slotid = be32_to_cpup(p++);
5545 /* result flags */
5546 res->sr_status_flags = be32_to_cpup(p);
5547 status = 0;
5548 out_err:
5549 res->sr_status = status;
5550 return status;
5551 out_overflow:
5552 print_overflow_msg(__func__, xdr);
5553 status = -EIO;
5554 goto out_err;
5555 #else /* CONFIG_NFS_V4_1 */
5556 return 0;
5557 #endif /* CONFIG_NFS_V4_1 */
5558 }
5559
5560 #if defined(CONFIG_NFS_V4_1)
5561 /*
5562 * TODO: Need to handle case when EOF != true;
5563 */
5564 static int decode_getdevicelist(struct xdr_stream *xdr,
5565 struct pnfs_devicelist *res)
5566 {
5567 __be32 *p;
5568 int status, i;
5569 nfs4_verifier verftemp;
5570
5571 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5572 if (status)
5573 return status;
5574
5575 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5576 if (unlikely(!p))
5577 goto out_overflow;
5578
5579 /* TODO: Skip cookie for now */
5580 p += 2;
5581
5582 /* Read verifier */
5583 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5584
5585 res->num_devs = be32_to_cpup(p);
5586
5587 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5588
5589 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5590 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5591 __func__, res->num_devs);
5592 return -EIO;
5593 }
5594
5595 p = xdr_inline_decode(xdr,
5596 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5597 if (unlikely(!p))
5598 goto out_overflow;
5599 for (i = 0; i < res->num_devs; i++)
5600 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5601 NFS4_DEVICEID4_SIZE);
5602 res->eof = be32_to_cpup(p);
5603 return 0;
5604 out_overflow:
5605 print_overflow_msg(__func__, xdr);
5606 return -EIO;
5607 }
5608
5609 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5610 struct pnfs_device *pdev)
5611 {
5612 __be32 *p;
5613 uint32_t len, type;
5614 int status;
5615
5616 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5617 if (status) {
5618 if (status == -ETOOSMALL) {
5619 p = xdr_inline_decode(xdr, 4);
5620 if (unlikely(!p))
5621 goto out_overflow;
5622 pdev->mincount = be32_to_cpup(p);
5623 dprintk("%s: Min count too small. mincnt = %u\n",
5624 __func__, pdev->mincount);
5625 }
5626 return status;
5627 }
5628
5629 p = xdr_inline_decode(xdr, 8);
5630 if (unlikely(!p))
5631 goto out_overflow;
5632 type = be32_to_cpup(p++);
5633 if (type != pdev->layout_type) {
5634 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5635 __func__, pdev->layout_type, type);
5636 return -EINVAL;
5637 }
5638 /*
5639 * Get the length of the opaque device_addr4. xdr_read_pages places
5640 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5641 * and places the remaining xdr data in xdr_buf->tail
5642 */
5643 pdev->mincount = be32_to_cpup(p);
5644 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5645 goto out_overflow;
5646
5647 /* Parse notification bitmap, verifying that it is zero. */
5648 p = xdr_inline_decode(xdr, 4);
5649 if (unlikely(!p))
5650 goto out_overflow;
5651 len = be32_to_cpup(p);
5652 if (len) {
5653 uint32_t i;
5654
5655 p = xdr_inline_decode(xdr, 4 * len);
5656 if (unlikely(!p))
5657 goto out_overflow;
5658 for (i = 0; i < len; i++, p++) {
5659 if (be32_to_cpup(p)) {
5660 dprintk("%s: notifications not supported\n",
5661 __func__);
5662 return -EIO;
5663 }
5664 }
5665 }
5666 return 0;
5667 out_overflow:
5668 print_overflow_msg(__func__, xdr);
5669 return -EIO;
5670 }
5671
5672 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5673 struct nfs4_layoutget_res *res)
5674 {
5675 __be32 *p;
5676 int status;
5677 u32 layout_count;
5678 u32 recvd;
5679
5680 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5681 if (status)
5682 return status;
5683 p = xdr_inline_decode(xdr, 4);
5684 if (unlikely(!p))
5685 goto out_overflow;
5686 res->return_on_close = be32_to_cpup(p);
5687 decode_stateid(xdr, &res->stateid);
5688 p = xdr_inline_decode(xdr, 4);
5689 if (unlikely(!p))
5690 goto out_overflow;
5691 layout_count = be32_to_cpup(p);
5692 if (!layout_count) {
5693 dprintk("%s: server responded with empty layout array\n",
5694 __func__);
5695 return -EINVAL;
5696 }
5697
5698 p = xdr_inline_decode(xdr, 28);
5699 if (unlikely(!p))
5700 goto out_overflow;
5701 p = xdr_decode_hyper(p, &res->range.offset);
5702 p = xdr_decode_hyper(p, &res->range.length);
5703 res->range.iomode = be32_to_cpup(p++);
5704 res->type = be32_to_cpup(p++);
5705 res->layoutp->len = be32_to_cpup(p);
5706
5707 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5708 __func__,
5709 (unsigned long)res->range.offset,
5710 (unsigned long)res->range.length,
5711 res->range.iomode,
5712 res->type,
5713 res->layoutp->len);
5714
5715 recvd = xdr_read_pages(xdr, res->layoutp->len);
5716 if (res->layoutp->len > recvd) {
5717 dprintk("NFS: server cheating in layoutget reply: "
5718 "layout len %u > recvd %u\n",
5719 res->layoutp->len, recvd);
5720 return -EINVAL;
5721 }
5722
5723 if (layout_count > 1) {
5724 /* We only handle a length one array at the moment. Any
5725 * further entries are just ignored. Note that this means
5726 * the client may see a response that is less than the
5727 * minimum it requested.
5728 */
5729 dprintk("%s: server responded with %d layouts, dropping tail\n",
5730 __func__, layout_count);
5731 }
5732
5733 return 0;
5734 out_overflow:
5735 print_overflow_msg(__func__, xdr);
5736 return -EIO;
5737 }
5738
5739 static int decode_layoutreturn(struct xdr_stream *xdr,
5740 struct nfs4_layoutreturn_res *res)
5741 {
5742 __be32 *p;
5743 int status;
5744
5745 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5746 if (status)
5747 return status;
5748 p = xdr_inline_decode(xdr, 4);
5749 if (unlikely(!p))
5750 goto out_overflow;
5751 res->lrs_present = be32_to_cpup(p);
5752 if (res->lrs_present)
5753 status = decode_stateid(xdr, &res->stateid);
5754 return status;
5755 out_overflow:
5756 print_overflow_msg(__func__, xdr);
5757 return -EIO;
5758 }
5759
5760 static int decode_layoutcommit(struct xdr_stream *xdr,
5761 struct rpc_rqst *req,
5762 struct nfs4_layoutcommit_res *res)
5763 {
5764 __be32 *p;
5765 __u32 sizechanged;
5766 int status;
5767
5768 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5769 res->status = status;
5770 if (status)
5771 return status;
5772
5773 p = xdr_inline_decode(xdr, 4);
5774 if (unlikely(!p))
5775 goto out_overflow;
5776 sizechanged = be32_to_cpup(p);
5777
5778 if (sizechanged) {
5779 /* throw away new size */
5780 p = xdr_inline_decode(xdr, 8);
5781 if (unlikely(!p))
5782 goto out_overflow;
5783 }
5784 return 0;
5785 out_overflow:
5786 print_overflow_msg(__func__, xdr);
5787 return -EIO;
5788 }
5789
5790 static int decode_test_stateid(struct xdr_stream *xdr,
5791 struct nfs41_test_stateid_res *res)
5792 {
5793 __be32 *p;
5794 int status;
5795 int num_res;
5796
5797 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5798 if (status)
5799 return status;
5800
5801 p = xdr_inline_decode(xdr, 4);
5802 if (unlikely(!p))
5803 goto out_overflow;
5804 num_res = be32_to_cpup(p++);
5805 if (num_res != 1)
5806 goto out;
5807
5808 p = xdr_inline_decode(xdr, 4);
5809 if (unlikely(!p))
5810 goto out_overflow;
5811 res->status = be32_to_cpup(p++);
5812
5813 return status;
5814 out_overflow:
5815 print_overflow_msg(__func__, xdr);
5816 out:
5817 return -EIO;
5818 }
5819
5820 static int decode_free_stateid(struct xdr_stream *xdr,
5821 struct nfs41_free_stateid_res *res)
5822 {
5823 __be32 *p;
5824 int status;
5825
5826 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5827 if (status)
5828 return status;
5829
5830 p = xdr_inline_decode(xdr, 4);
5831 if (unlikely(!p))
5832 goto out_overflow;
5833 res->status = be32_to_cpup(p++);
5834 return res->status;
5835 out_overflow:
5836 print_overflow_msg(__func__, xdr);
5837 return -EIO;
5838 }
5839 #endif /* CONFIG_NFS_V4_1 */
5840
5841 /*
5842 * END OF "GENERIC" DECODE ROUTINES.
5843 */
5844
5845 /*
5846 * Decode OPEN_DOWNGRADE response
5847 */
5848 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5849 struct xdr_stream *xdr,
5850 struct nfs_closeres *res)
5851 {
5852 struct compound_hdr hdr;
5853 int status;
5854
5855 status = decode_compound_hdr(xdr, &hdr);
5856 if (status)
5857 goto out;
5858 status = decode_sequence(xdr, &res->seq_res, rqstp);
5859 if (status)
5860 goto out;
5861 status = decode_putfh(xdr);
5862 if (status)
5863 goto out;
5864 status = decode_open_downgrade(xdr, res);
5865 if (status != 0)
5866 goto out;
5867 decode_getfattr(xdr, res->fattr, res->server);
5868 out:
5869 return status;
5870 }
5871
5872 /*
5873 * Decode ACCESS response
5874 */
5875 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5876 struct nfs4_accessres *res)
5877 {
5878 struct compound_hdr hdr;
5879 int status;
5880
5881 status = decode_compound_hdr(xdr, &hdr);
5882 if (status)
5883 goto out;
5884 status = decode_sequence(xdr, &res->seq_res, rqstp);
5885 if (status)
5886 goto out;
5887 status = decode_putfh(xdr);
5888 if (status != 0)
5889 goto out;
5890 status = decode_access(xdr, &res->supported, &res->access);
5891 if (status != 0)
5892 goto out;
5893 decode_getfattr(xdr, res->fattr, res->server);
5894 out:
5895 return status;
5896 }
5897
5898 /*
5899 * Decode LOOKUP response
5900 */
5901 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5902 struct nfs4_lookup_res *res)
5903 {
5904 struct compound_hdr hdr;
5905 int status;
5906
5907 status = decode_compound_hdr(xdr, &hdr);
5908 if (status)
5909 goto out;
5910 status = decode_sequence(xdr, &res->seq_res, rqstp);
5911 if (status)
5912 goto out;
5913 status = decode_putfh(xdr);
5914 if (status)
5915 goto out;
5916 status = decode_lookup(xdr);
5917 if (status)
5918 goto out;
5919 status = decode_getfh(xdr, res->fh);
5920 if (status)
5921 goto out;
5922 status = decode_getfattr(xdr, res->fattr, res->server);
5923 out:
5924 return status;
5925 }
5926
5927 /*
5928 * Decode LOOKUP_ROOT response
5929 */
5930 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5931 struct xdr_stream *xdr,
5932 struct nfs4_lookup_res *res)
5933 {
5934 struct compound_hdr hdr;
5935 int status;
5936
5937 status = decode_compound_hdr(xdr, &hdr);
5938 if (status)
5939 goto out;
5940 status = decode_sequence(xdr, &res->seq_res, rqstp);
5941 if (status)
5942 goto out;
5943 status = decode_putrootfh(xdr);
5944 if (status)
5945 goto out;
5946 status = decode_getfh(xdr, res->fh);
5947 if (status == 0)
5948 status = decode_getfattr(xdr, res->fattr, res->server);
5949 out:
5950 return status;
5951 }
5952
5953 /*
5954 * Decode REMOVE response
5955 */
5956 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5957 struct nfs_removeres *res)
5958 {
5959 struct compound_hdr hdr;
5960 int status;
5961
5962 status = decode_compound_hdr(xdr, &hdr);
5963 if (status)
5964 goto out;
5965 status = decode_sequence(xdr, &res->seq_res, rqstp);
5966 if (status)
5967 goto out;
5968 status = decode_putfh(xdr);
5969 if (status)
5970 goto out;
5971 status = decode_remove(xdr, &res->cinfo);
5972 out:
5973 return status;
5974 }
5975
5976 /*
5977 * Decode RENAME response
5978 */
5979 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5980 struct nfs_renameres *res)
5981 {
5982 struct compound_hdr hdr;
5983 int status;
5984
5985 status = decode_compound_hdr(xdr, &hdr);
5986 if (status)
5987 goto out;
5988 status = decode_sequence(xdr, &res->seq_res, rqstp);
5989 if (status)
5990 goto out;
5991 status = decode_putfh(xdr);
5992 if (status)
5993 goto out;
5994 status = decode_savefh(xdr);
5995 if (status)
5996 goto out;
5997 status = decode_putfh(xdr);
5998 if (status)
5999 goto out;
6000 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6001 out:
6002 return status;
6003 }
6004
6005 /*
6006 * Decode LINK response
6007 */
6008 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6009 struct nfs4_link_res *res)
6010 {
6011 struct compound_hdr hdr;
6012 int status;
6013
6014 status = decode_compound_hdr(xdr, &hdr);
6015 if (status)
6016 goto out;
6017 status = decode_sequence(xdr, &res->seq_res, rqstp);
6018 if (status)
6019 goto out;
6020 status = decode_putfh(xdr);
6021 if (status)
6022 goto out;
6023 status = decode_savefh(xdr);
6024 if (status)
6025 goto out;
6026 status = decode_putfh(xdr);
6027 if (status)
6028 goto out;
6029 status = decode_link(xdr, &res->cinfo);
6030 if (status)
6031 goto out;
6032 /*
6033 * Note order: OP_LINK leaves the directory as the current
6034 * filehandle.
6035 */
6036 status = decode_restorefh(xdr);
6037 if (status)
6038 goto out;
6039 decode_getfattr(xdr, res->fattr, res->server);
6040 out:
6041 return status;
6042 }
6043
6044 /*
6045 * Decode CREATE response
6046 */
6047 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6048 struct nfs4_create_res *res)
6049 {
6050 struct compound_hdr hdr;
6051 int status;
6052
6053 status = decode_compound_hdr(xdr, &hdr);
6054 if (status)
6055 goto out;
6056 status = decode_sequence(xdr, &res->seq_res, rqstp);
6057 if (status)
6058 goto out;
6059 status = decode_putfh(xdr);
6060 if (status)
6061 goto out;
6062 status = decode_create(xdr, &res->dir_cinfo);
6063 if (status)
6064 goto out;
6065 status = decode_getfh(xdr, res->fh);
6066 if (status)
6067 goto out;
6068 decode_getfattr(xdr, res->fattr, res->server);
6069 out:
6070 return status;
6071 }
6072
6073 /*
6074 * Decode SYMLINK response
6075 */
6076 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6077 struct nfs4_create_res *res)
6078 {
6079 return nfs4_xdr_dec_create(rqstp, xdr, res);
6080 }
6081
6082 /*
6083 * Decode GETATTR response
6084 */
6085 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6086 struct nfs4_getattr_res *res)
6087 {
6088 struct compound_hdr hdr;
6089 int status;
6090
6091 status = decode_compound_hdr(xdr, &hdr);
6092 if (status)
6093 goto out;
6094 status = decode_sequence(xdr, &res->seq_res, rqstp);
6095 if (status)
6096 goto out;
6097 status = decode_putfh(xdr);
6098 if (status)
6099 goto out;
6100 status = decode_getfattr(xdr, res->fattr, res->server);
6101 out:
6102 return status;
6103 }
6104
6105 /*
6106 * Encode an SETACL request
6107 */
6108 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6109 struct nfs_setaclargs *args)
6110 {
6111 struct compound_hdr hdr = {
6112 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6113 };
6114
6115 encode_compound_hdr(xdr, req, &hdr);
6116 encode_sequence(xdr, &args->seq_args, &hdr);
6117 encode_putfh(xdr, args->fh, &hdr);
6118 encode_setacl(xdr, args, &hdr);
6119 encode_nops(&hdr);
6120 }
6121
6122 /*
6123 * Decode SETACL response
6124 */
6125 static int
6126 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6127 struct nfs_setaclres *res)
6128 {
6129 struct compound_hdr hdr;
6130 int status;
6131
6132 status = decode_compound_hdr(xdr, &hdr);
6133 if (status)
6134 goto out;
6135 status = decode_sequence(xdr, &res->seq_res, rqstp);
6136 if (status)
6137 goto out;
6138 status = decode_putfh(xdr);
6139 if (status)
6140 goto out;
6141 status = decode_setattr(xdr);
6142 out:
6143 return status;
6144 }
6145
6146 /*
6147 * Decode GETACL response
6148 */
6149 static int
6150 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6151 struct nfs_getaclres *res)
6152 {
6153 struct compound_hdr hdr;
6154 int status;
6155
6156 if (res->acl_scratch != NULL) {
6157 void *p = page_address(res->acl_scratch);
6158 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6159 }
6160 status = decode_compound_hdr(xdr, &hdr);
6161 if (status)
6162 goto out;
6163 status = decode_sequence(xdr, &res->seq_res, rqstp);
6164 if (status)
6165 goto out;
6166 status = decode_putfh(xdr);
6167 if (status)
6168 goto out;
6169 status = decode_getacl(xdr, rqstp, res);
6170
6171 out:
6172 return status;
6173 }
6174
6175 /*
6176 * Decode CLOSE response
6177 */
6178 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6179 struct nfs_closeres *res)
6180 {
6181 struct compound_hdr hdr;
6182 int status;
6183
6184 status = decode_compound_hdr(xdr, &hdr);
6185 if (status)
6186 goto out;
6187 status = decode_sequence(xdr, &res->seq_res, rqstp);
6188 if (status)
6189 goto out;
6190 status = decode_putfh(xdr);
6191 if (status)
6192 goto out;
6193 status = decode_close(xdr, res);
6194 if (status != 0)
6195 goto out;
6196 /*
6197 * Note: Server may do delete on close for this file
6198 * in which case the getattr call will fail with
6199 * an ESTALE error. Shouldn't be a problem,
6200 * though, since fattr->valid will remain unset.
6201 */
6202 decode_getfattr(xdr, res->fattr, res->server);
6203 out:
6204 return status;
6205 }
6206
6207 /*
6208 * Decode OPEN response
6209 */
6210 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6211 struct nfs_openres *res)
6212 {
6213 struct compound_hdr hdr;
6214 int status;
6215
6216 status = decode_compound_hdr(xdr, &hdr);
6217 if (status)
6218 goto out;
6219 status = decode_sequence(xdr, &res->seq_res, rqstp);
6220 if (status)
6221 goto out;
6222 status = decode_putfh(xdr);
6223 if (status)
6224 goto out;
6225 status = decode_open(xdr, res);
6226 if (status)
6227 goto out;
6228 status = decode_getfh(xdr, &res->fh);
6229 if (status)
6230 goto out;
6231 if (res->access_request)
6232 decode_access(xdr, &res->access_supported, &res->access_result);
6233 decode_getfattr(xdr, res->f_attr, res->server);
6234 out:
6235 return status;
6236 }
6237
6238 /*
6239 * Decode OPEN_CONFIRM response
6240 */
6241 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6242 struct xdr_stream *xdr,
6243 struct nfs_open_confirmres *res)
6244 {
6245 struct compound_hdr hdr;
6246 int status;
6247
6248 status = decode_compound_hdr(xdr, &hdr);
6249 if (status)
6250 goto out;
6251 status = decode_putfh(xdr);
6252 if (status)
6253 goto out;
6254 status = decode_open_confirm(xdr, res);
6255 out:
6256 return status;
6257 }
6258
6259 /*
6260 * Decode OPEN response
6261 */
6262 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6263 struct xdr_stream *xdr,
6264 struct nfs_openres *res)
6265 {
6266 struct compound_hdr hdr;
6267 int status;
6268
6269 status = decode_compound_hdr(xdr, &hdr);
6270 if (status)
6271 goto out;
6272 status = decode_sequence(xdr, &res->seq_res, rqstp);
6273 if (status)
6274 goto out;
6275 status = decode_putfh(xdr);
6276 if (status)
6277 goto out;
6278 status = decode_open(xdr, res);
6279 if (status)
6280 goto out;
6281 if (res->access_request)
6282 decode_access(xdr, &res->access_supported, &res->access_result);
6283 decode_getfattr(xdr, res->f_attr, res->server);
6284 out:
6285 return status;
6286 }
6287
6288 /*
6289 * Decode SETATTR response
6290 */
6291 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6292 struct xdr_stream *xdr,
6293 struct nfs_setattrres *res)
6294 {
6295 struct compound_hdr hdr;
6296 int status;
6297
6298 status = decode_compound_hdr(xdr, &hdr);
6299 if (status)
6300 goto out;
6301 status = decode_sequence(xdr, &res->seq_res, rqstp);
6302 if (status)
6303 goto out;
6304 status = decode_putfh(xdr);
6305 if (status)
6306 goto out;
6307 status = decode_setattr(xdr);
6308 if (status)
6309 goto out;
6310 decode_getfattr(xdr, res->fattr, res->server);
6311 out:
6312 return status;
6313 }
6314
6315 /*
6316 * Decode LOCK response
6317 */
6318 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6319 struct nfs_lock_res *res)
6320 {
6321 struct compound_hdr hdr;
6322 int status;
6323
6324 status = decode_compound_hdr(xdr, &hdr);
6325 if (status)
6326 goto out;
6327 status = decode_sequence(xdr, &res->seq_res, rqstp);
6328 if (status)
6329 goto out;
6330 status = decode_putfh(xdr);
6331 if (status)
6332 goto out;
6333 status = decode_lock(xdr, res);
6334 out:
6335 return status;
6336 }
6337
6338 /*
6339 * Decode LOCKT response
6340 */
6341 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6342 struct nfs_lockt_res *res)
6343 {
6344 struct compound_hdr hdr;
6345 int status;
6346
6347 status = decode_compound_hdr(xdr, &hdr);
6348 if (status)
6349 goto out;
6350 status = decode_sequence(xdr, &res->seq_res, rqstp);
6351 if (status)
6352 goto out;
6353 status = decode_putfh(xdr);
6354 if (status)
6355 goto out;
6356 status = decode_lockt(xdr, res);
6357 out:
6358 return status;
6359 }
6360
6361 /*
6362 * Decode LOCKU response
6363 */
6364 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6365 struct nfs_locku_res *res)
6366 {
6367 struct compound_hdr hdr;
6368 int status;
6369
6370 status = decode_compound_hdr(xdr, &hdr);
6371 if (status)
6372 goto out;
6373 status = decode_sequence(xdr, &res->seq_res, rqstp);
6374 if (status)
6375 goto out;
6376 status = decode_putfh(xdr);
6377 if (status)
6378 goto out;
6379 status = decode_locku(xdr, res);
6380 out:
6381 return status;
6382 }
6383
6384 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6385 struct xdr_stream *xdr, void *dummy)
6386 {
6387 struct compound_hdr hdr;
6388 int status;
6389
6390 status = decode_compound_hdr(xdr, &hdr);
6391 if (!status)
6392 status = decode_release_lockowner(xdr);
6393 return status;
6394 }
6395
6396 /*
6397 * Decode READLINK response
6398 */
6399 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6400 struct xdr_stream *xdr,
6401 struct nfs4_readlink_res *res)
6402 {
6403 struct compound_hdr hdr;
6404 int status;
6405
6406 status = decode_compound_hdr(xdr, &hdr);
6407 if (status)
6408 goto out;
6409 status = decode_sequence(xdr, &res->seq_res, rqstp);
6410 if (status)
6411 goto out;
6412 status = decode_putfh(xdr);
6413 if (status)
6414 goto out;
6415 status = decode_readlink(xdr, rqstp);
6416 out:
6417 return status;
6418 }
6419
6420 /*
6421 * Decode READDIR response
6422 */
6423 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6424 struct nfs4_readdir_res *res)
6425 {
6426 struct compound_hdr hdr;
6427 int status;
6428
6429 status = decode_compound_hdr(xdr, &hdr);
6430 if (status)
6431 goto out;
6432 status = decode_sequence(xdr, &res->seq_res, rqstp);
6433 if (status)
6434 goto out;
6435 status = decode_putfh(xdr);
6436 if (status)
6437 goto out;
6438 status = decode_readdir(xdr, rqstp, res);
6439 out:
6440 return status;
6441 }
6442
6443 /*
6444 * Decode Read response
6445 */
6446 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6447 struct nfs_readres *res)
6448 {
6449 struct compound_hdr hdr;
6450 int status;
6451
6452 status = decode_compound_hdr(xdr, &hdr);
6453 if (status)
6454 goto out;
6455 status = decode_sequence(xdr, &res->seq_res, rqstp);
6456 if (status)
6457 goto out;
6458 status = decode_putfh(xdr);
6459 if (status)
6460 goto out;
6461 status = decode_read(xdr, rqstp, res);
6462 if (!status)
6463 status = res->count;
6464 out:
6465 return status;
6466 }
6467
6468 /*
6469 * Decode WRITE response
6470 */
6471 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6472 struct nfs_writeres *res)
6473 {
6474 struct compound_hdr hdr;
6475 int status;
6476
6477 status = decode_compound_hdr(xdr, &hdr);
6478 if (status)
6479 goto out;
6480 status = decode_sequence(xdr, &res->seq_res, rqstp);
6481 if (status)
6482 goto out;
6483 status = decode_putfh(xdr);
6484 if (status)
6485 goto out;
6486 status = decode_write(xdr, res);
6487 if (status)
6488 goto out;
6489 if (res->fattr)
6490 decode_getfattr(xdr, res->fattr, res->server);
6491 if (!status)
6492 status = res->count;
6493 out:
6494 return status;
6495 }
6496
6497 /*
6498 * Decode COMMIT response
6499 */
6500 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6501 struct nfs_commitres *res)
6502 {
6503 struct compound_hdr hdr;
6504 int status;
6505
6506 status = decode_compound_hdr(xdr, &hdr);
6507 if (status)
6508 goto out;
6509 status = decode_sequence(xdr, &res->seq_res, rqstp);
6510 if (status)
6511 goto out;
6512 status = decode_putfh(xdr);
6513 if (status)
6514 goto out;
6515 status = decode_commit(xdr, res);
6516 out:
6517 return status;
6518 }
6519
6520 /*
6521 * Decode FSINFO response
6522 */
6523 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6524 struct nfs4_fsinfo_res *res)
6525 {
6526 struct compound_hdr hdr;
6527 int status;
6528
6529 status = decode_compound_hdr(xdr, &hdr);
6530 if (!status)
6531 status = decode_sequence(xdr, &res->seq_res, req);
6532 if (!status)
6533 status = decode_putfh(xdr);
6534 if (!status)
6535 status = decode_fsinfo(xdr, res->fsinfo);
6536 return status;
6537 }
6538
6539 /*
6540 * Decode PATHCONF response
6541 */
6542 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6543 struct nfs4_pathconf_res *res)
6544 {
6545 struct compound_hdr hdr;
6546 int status;
6547
6548 status = decode_compound_hdr(xdr, &hdr);
6549 if (!status)
6550 status = decode_sequence(xdr, &res->seq_res, req);
6551 if (!status)
6552 status = decode_putfh(xdr);
6553 if (!status)
6554 status = decode_pathconf(xdr, res->pathconf);
6555 return status;
6556 }
6557
6558 /*
6559 * Decode STATFS response
6560 */
6561 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6562 struct nfs4_statfs_res *res)
6563 {
6564 struct compound_hdr hdr;
6565 int status;
6566
6567 status = decode_compound_hdr(xdr, &hdr);
6568 if (!status)
6569 status = decode_sequence(xdr, &res->seq_res, req);
6570 if (!status)
6571 status = decode_putfh(xdr);
6572 if (!status)
6573 status = decode_statfs(xdr, res->fsstat);
6574 return status;
6575 }
6576
6577 /*
6578 * Decode GETATTR_BITMAP response
6579 */
6580 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6581 struct xdr_stream *xdr,
6582 struct nfs4_server_caps_res *res)
6583 {
6584 struct compound_hdr hdr;
6585 int status;
6586
6587 status = decode_compound_hdr(xdr, &hdr);
6588 if (status)
6589 goto out;
6590 status = decode_sequence(xdr, &res->seq_res, req);
6591 if (status)
6592 goto out;
6593 status = decode_putfh(xdr);
6594 if (status)
6595 goto out;
6596 status = decode_server_caps(xdr, res);
6597 out:
6598 return status;
6599 }
6600
6601 /*
6602 * Decode RENEW response
6603 */
6604 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6605 void *__unused)
6606 {
6607 struct compound_hdr hdr;
6608 int status;
6609
6610 status = decode_compound_hdr(xdr, &hdr);
6611 if (!status)
6612 status = decode_renew(xdr);
6613 return status;
6614 }
6615
6616 /*
6617 * Decode SETCLIENTID response
6618 */
6619 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6620 struct xdr_stream *xdr,
6621 struct nfs4_setclientid_res *res)
6622 {
6623 struct compound_hdr hdr;
6624 int status;
6625
6626 status = decode_compound_hdr(xdr, &hdr);
6627 if (!status)
6628 status = decode_setclientid(xdr, res);
6629 return status;
6630 }
6631
6632 /*
6633 * Decode SETCLIENTID_CONFIRM response
6634 */
6635 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6636 struct xdr_stream *xdr)
6637 {
6638 struct compound_hdr hdr;
6639 int status;
6640
6641 status = decode_compound_hdr(xdr, &hdr);
6642 if (!status)
6643 status = decode_setclientid_confirm(xdr);
6644 return status;
6645 }
6646
6647 /*
6648 * Decode DELEGRETURN response
6649 */
6650 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6651 struct xdr_stream *xdr,
6652 struct nfs4_delegreturnres *res)
6653 {
6654 struct compound_hdr hdr;
6655 int status;
6656
6657 status = decode_compound_hdr(xdr, &hdr);
6658 if (status)
6659 goto out;
6660 status = decode_sequence(xdr, &res->seq_res, rqstp);
6661 if (status)
6662 goto out;
6663 status = decode_putfh(xdr);
6664 if (status != 0)
6665 goto out;
6666 status = decode_getfattr(xdr, res->fattr, res->server);
6667 if (status != 0)
6668 goto out;
6669 status = decode_delegreturn(xdr);
6670 out:
6671 return status;
6672 }
6673
6674 /*
6675 * Decode FS_LOCATIONS response
6676 */
6677 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6678 struct xdr_stream *xdr,
6679 struct nfs4_fs_locations_res *res)
6680 {
6681 struct compound_hdr hdr;
6682 int status;
6683
6684 status = decode_compound_hdr(xdr, &hdr);
6685 if (status)
6686 goto out;
6687 status = decode_sequence(xdr, &res->seq_res, req);
6688 if (status)
6689 goto out;
6690 status = decode_putfh(xdr);
6691 if (status)
6692 goto out;
6693 status = decode_lookup(xdr);
6694 if (status)
6695 goto out;
6696 xdr_enter_page(xdr, PAGE_SIZE);
6697 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6698 NULL, res->fs_locations,
6699 res->fs_locations->server);
6700 out:
6701 return status;
6702 }
6703
6704 /*
6705 * Decode SECINFO response
6706 */
6707 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6708 struct xdr_stream *xdr,
6709 struct nfs4_secinfo_res *res)
6710 {
6711 struct compound_hdr hdr;
6712 int status;
6713
6714 status = decode_compound_hdr(xdr, &hdr);
6715 if (status)
6716 goto out;
6717 status = decode_sequence(xdr, &res->seq_res, rqstp);
6718 if (status)
6719 goto out;
6720 status = decode_putfh(xdr);
6721 if (status)
6722 goto out;
6723 status = decode_secinfo(xdr, res);
6724 out:
6725 return status;
6726 }
6727
6728 #if defined(CONFIG_NFS_V4_1)
6729 /*
6730 * Decode BIND_CONN_TO_SESSION response
6731 */
6732 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6733 struct xdr_stream *xdr,
6734 void *res)
6735 {
6736 struct compound_hdr hdr;
6737 int status;
6738
6739 status = decode_compound_hdr(xdr, &hdr);
6740 if (!status)
6741 status = decode_bind_conn_to_session(xdr, res);
6742 return status;
6743 }
6744
6745 /*
6746 * Decode EXCHANGE_ID response
6747 */
6748 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6749 struct xdr_stream *xdr,
6750 void *res)
6751 {
6752 struct compound_hdr hdr;
6753 int status;
6754
6755 status = decode_compound_hdr(xdr, &hdr);
6756 if (!status)
6757 status = decode_exchange_id(xdr, res);
6758 return status;
6759 }
6760
6761 /*
6762 * Decode CREATE_SESSION response
6763 */
6764 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6765 struct xdr_stream *xdr,
6766 struct nfs41_create_session_res *res)
6767 {
6768 struct compound_hdr hdr;
6769 int status;
6770
6771 status = decode_compound_hdr(xdr, &hdr);
6772 if (!status)
6773 status = decode_create_session(xdr, res);
6774 return status;
6775 }
6776
6777 /*
6778 * Decode DESTROY_SESSION response
6779 */
6780 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6781 struct xdr_stream *xdr,
6782 void *res)
6783 {
6784 struct compound_hdr hdr;
6785 int status;
6786
6787 status = decode_compound_hdr(xdr, &hdr);
6788 if (!status)
6789 status = decode_destroy_session(xdr, res);
6790 return status;
6791 }
6792
6793 /*
6794 * Decode DESTROY_CLIENTID response
6795 */
6796 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6797 struct xdr_stream *xdr,
6798 void *res)
6799 {
6800 struct compound_hdr hdr;
6801 int status;
6802
6803 status = decode_compound_hdr(xdr, &hdr);
6804 if (!status)
6805 status = decode_destroy_clientid(xdr, res);
6806 return status;
6807 }
6808
6809 /*
6810 * Decode SEQUENCE response
6811 */
6812 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6813 struct xdr_stream *xdr,
6814 struct nfs4_sequence_res *res)
6815 {
6816 struct compound_hdr hdr;
6817 int status;
6818
6819 status = decode_compound_hdr(xdr, &hdr);
6820 if (!status)
6821 status = decode_sequence(xdr, res, rqstp);
6822 return status;
6823 }
6824
6825 /*
6826 * Decode GET_LEASE_TIME response
6827 */
6828 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6829 struct xdr_stream *xdr,
6830 struct nfs4_get_lease_time_res *res)
6831 {
6832 struct compound_hdr hdr;
6833 int status;
6834
6835 status = decode_compound_hdr(xdr, &hdr);
6836 if (!status)
6837 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6838 if (!status)
6839 status = decode_putrootfh(xdr);
6840 if (!status)
6841 status = decode_fsinfo(xdr, res->lr_fsinfo);
6842 return status;
6843 }
6844
6845 /*
6846 * Decode RECLAIM_COMPLETE response
6847 */
6848 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6849 struct xdr_stream *xdr,
6850 struct nfs41_reclaim_complete_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->seq_res, rqstp);
6858 if (!status)
6859 status = decode_reclaim_complete(xdr, (void *)NULL);
6860 return status;
6861 }
6862
6863 /*
6864 * Decode GETDEVICELIST response
6865 */
6866 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6867 struct xdr_stream *xdr,
6868 struct nfs4_getdevicelist_res *res)
6869 {
6870 struct compound_hdr hdr;
6871 int status;
6872
6873 dprintk("encoding getdevicelist!\n");
6874
6875 status = decode_compound_hdr(xdr, &hdr);
6876 if (status != 0)
6877 goto out;
6878 status = decode_sequence(xdr, &res->seq_res, rqstp);
6879 if (status != 0)
6880 goto out;
6881 status = decode_putfh(xdr);
6882 if (status != 0)
6883 goto out;
6884 status = decode_getdevicelist(xdr, res->devlist);
6885 out:
6886 return status;
6887 }
6888
6889 /*
6890 * Decode GETDEVINFO response
6891 */
6892 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6893 struct xdr_stream *xdr,
6894 struct nfs4_getdeviceinfo_res *res)
6895 {
6896 struct compound_hdr hdr;
6897 int status;
6898
6899 status = decode_compound_hdr(xdr, &hdr);
6900 if (status != 0)
6901 goto out;
6902 status = decode_sequence(xdr, &res->seq_res, rqstp);
6903 if (status != 0)
6904 goto out;
6905 status = decode_getdeviceinfo(xdr, res->pdev);
6906 out:
6907 return status;
6908 }
6909
6910 /*
6911 * Decode LAYOUTGET response
6912 */
6913 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6914 struct xdr_stream *xdr,
6915 struct nfs4_layoutget_res *res)
6916 {
6917 struct compound_hdr hdr;
6918 int status;
6919
6920 status = decode_compound_hdr(xdr, &hdr);
6921 if (status)
6922 goto out;
6923 status = decode_sequence(xdr, &res->seq_res, rqstp);
6924 if (status)
6925 goto out;
6926 status = decode_putfh(xdr);
6927 if (status)
6928 goto out;
6929 status = decode_layoutget(xdr, rqstp, res);
6930 out:
6931 return status;
6932 }
6933
6934 /*
6935 * Decode LAYOUTRETURN response
6936 */
6937 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6938 struct xdr_stream *xdr,
6939 struct nfs4_layoutreturn_res *res)
6940 {
6941 struct compound_hdr hdr;
6942 int status;
6943
6944 status = decode_compound_hdr(xdr, &hdr);
6945 if (status)
6946 goto out;
6947 status = decode_sequence(xdr, &res->seq_res, rqstp);
6948 if (status)
6949 goto out;
6950 status = decode_putfh(xdr);
6951 if (status)
6952 goto out;
6953 status = decode_layoutreturn(xdr, res);
6954 out:
6955 return status;
6956 }
6957
6958 /*
6959 * Decode LAYOUTCOMMIT response
6960 */
6961 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6962 struct xdr_stream *xdr,
6963 struct nfs4_layoutcommit_res *res)
6964 {
6965 struct compound_hdr hdr;
6966 int status;
6967
6968 status = decode_compound_hdr(xdr, &hdr);
6969 if (status)
6970 goto out;
6971 status = decode_sequence(xdr, &res->seq_res, rqstp);
6972 if (status)
6973 goto out;
6974 status = decode_putfh(xdr);
6975 if (status)
6976 goto out;
6977 status = decode_layoutcommit(xdr, rqstp, res);
6978 if (status)
6979 goto out;
6980 decode_getfattr(xdr, res->fattr, res->server);
6981 out:
6982 return status;
6983 }
6984
6985 /*
6986 * Decode SECINFO_NO_NAME response
6987 */
6988 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
6989 struct xdr_stream *xdr,
6990 struct nfs4_secinfo_res *res)
6991 {
6992 struct compound_hdr hdr;
6993 int status;
6994
6995 status = decode_compound_hdr(xdr, &hdr);
6996 if (status)
6997 goto out;
6998 status = decode_sequence(xdr, &res->seq_res, rqstp);
6999 if (status)
7000 goto out;
7001 status = decode_putrootfh(xdr);
7002 if (status)
7003 goto out;
7004 status = decode_secinfo_no_name(xdr, res);
7005 out:
7006 return status;
7007 }
7008
7009 /*
7010 * Decode TEST_STATEID response
7011 */
7012 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7013 struct xdr_stream *xdr,
7014 struct nfs41_test_stateid_res *res)
7015 {
7016 struct compound_hdr hdr;
7017 int status;
7018
7019 status = decode_compound_hdr(xdr, &hdr);
7020 if (status)
7021 goto out;
7022 status = decode_sequence(xdr, &res->seq_res, rqstp);
7023 if (status)
7024 goto out;
7025 status = decode_test_stateid(xdr, res);
7026 out:
7027 return status;
7028 }
7029
7030 /*
7031 * Decode FREE_STATEID response
7032 */
7033 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7034 struct xdr_stream *xdr,
7035 struct nfs41_free_stateid_res *res)
7036 {
7037 struct compound_hdr hdr;
7038 int status;
7039
7040 status = decode_compound_hdr(xdr, &hdr);
7041 if (status)
7042 goto out;
7043 status = decode_sequence(xdr, &res->seq_res, rqstp);
7044 if (status)
7045 goto out;
7046 status = decode_free_stateid(xdr, res);
7047 out:
7048 return status;
7049 }
7050 #endif /* CONFIG_NFS_V4_1 */
7051
7052 /**
7053 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7054 * the local page cache.
7055 * @xdr: XDR stream where entry resides
7056 * @entry: buffer to fill in with entry data
7057 * @plus: boolean indicating whether this should be a readdirplus entry
7058 *
7059 * Returns zero if successful, otherwise a negative errno value is
7060 * returned.
7061 *
7062 * This function is not invoked during READDIR reply decoding, but
7063 * rather whenever an application invokes the getdents(2) system call
7064 * on a directory already in our cache.
7065 */
7066 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7067 int plus)
7068 {
7069 unsigned int savep;
7070 uint32_t bitmap[3] = {0};
7071 uint32_t len;
7072 __be32 *p = xdr_inline_decode(xdr, 4);
7073 if (unlikely(!p))
7074 goto out_overflow;
7075 if (*p == xdr_zero) {
7076 p = xdr_inline_decode(xdr, 4);
7077 if (unlikely(!p))
7078 goto out_overflow;
7079 if (*p == xdr_zero)
7080 return -EAGAIN;
7081 entry->eof = 1;
7082 return -EBADCOOKIE;
7083 }
7084
7085 p = xdr_inline_decode(xdr, 12);
7086 if (unlikely(!p))
7087 goto out_overflow;
7088 entry->prev_cookie = entry->cookie;
7089 p = xdr_decode_hyper(p, &entry->cookie);
7090 entry->len = be32_to_cpup(p);
7091
7092 p = xdr_inline_decode(xdr, entry->len);
7093 if (unlikely(!p))
7094 goto out_overflow;
7095 entry->name = (const char *) p;
7096
7097 /*
7098 * In case the server doesn't return an inode number,
7099 * we fake one here. (We don't use inode number 0,
7100 * since glibc seems to choke on it...)
7101 */
7102 entry->ino = 1;
7103 entry->fattr->valid = 0;
7104
7105 if (decode_attr_bitmap(xdr, bitmap) < 0)
7106 goto out_overflow;
7107
7108 if (decode_attr_length(xdr, &len, &savep) < 0)
7109 goto out_overflow;
7110
7111 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7112 NULL, entry->server) < 0)
7113 goto out_overflow;
7114 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7115 entry->ino = entry->fattr->mounted_on_fileid;
7116 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7117 entry->ino = entry->fattr->fileid;
7118
7119 entry->d_type = DT_UNKNOWN;
7120 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7121 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7122
7123 return 0;
7124
7125 out_overflow:
7126 print_overflow_msg(__func__, xdr);
7127 return -EAGAIN;
7128 }
7129
7130 /*
7131 * We need to translate between nfs status return values and
7132 * the local errno values which may not be the same.
7133 */
7134 static struct {
7135 int stat;
7136 int errno;
7137 } nfs_errtbl[] = {
7138 { NFS4_OK, 0 },
7139 { NFS4ERR_PERM, -EPERM },
7140 { NFS4ERR_NOENT, -ENOENT },
7141 { NFS4ERR_IO, -errno_NFSERR_IO},
7142 { NFS4ERR_NXIO, -ENXIO },
7143 { NFS4ERR_ACCESS, -EACCES },
7144 { NFS4ERR_EXIST, -EEXIST },
7145 { NFS4ERR_XDEV, -EXDEV },
7146 { NFS4ERR_NOTDIR, -ENOTDIR },
7147 { NFS4ERR_ISDIR, -EISDIR },
7148 { NFS4ERR_INVAL, -EINVAL },
7149 { NFS4ERR_FBIG, -EFBIG },
7150 { NFS4ERR_NOSPC, -ENOSPC },
7151 { NFS4ERR_ROFS, -EROFS },
7152 { NFS4ERR_MLINK, -EMLINK },
7153 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7154 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7155 { NFS4ERR_DQUOT, -EDQUOT },
7156 { NFS4ERR_STALE, -ESTALE },
7157 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7158 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7159 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7160 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7161 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7162 { NFS4ERR_BADTYPE, -EBADTYPE },
7163 { NFS4ERR_LOCKED, -EAGAIN },
7164 { NFS4ERR_SYMLINK, -ELOOP },
7165 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7166 { NFS4ERR_DEADLOCK, -EDEADLK },
7167 { -1, -EIO }
7168 };
7169
7170 /*
7171 * Convert an NFS error code to a local one.
7172 * This one is used jointly by NFSv2 and NFSv3.
7173 */
7174 static int
7175 nfs4_stat_to_errno(int stat)
7176 {
7177 int i;
7178 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7179 if (nfs_errtbl[i].stat == stat)
7180 return nfs_errtbl[i].errno;
7181 }
7182 if (stat <= 10000 || stat > 10100) {
7183 /* The server is looney tunes. */
7184 return -EREMOTEIO;
7185 }
7186 /* If we cannot translate the error, the recovery routines should
7187 * handle it.
7188 * Note: remaining NFSv4 error codes have values > 10000, so should
7189 * not conflict with native Linux error codes.
7190 */
7191 return -stat;
7192 }
7193
7194 #define PROC(proc, argtype, restype) \
7195 [NFSPROC4_CLNT_##proc] = { \
7196 .p_proc = NFSPROC4_COMPOUND, \
7197 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7198 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7199 .p_arglen = NFS4_##argtype##_sz, \
7200 .p_replen = NFS4_##restype##_sz, \
7201 .p_statidx = NFSPROC4_CLNT_##proc, \
7202 .p_name = #proc, \
7203 }
7204
7205 struct rpc_procinfo nfs4_procedures[] = {
7206 PROC(READ, enc_read, dec_read),
7207 PROC(WRITE, enc_write, dec_write),
7208 PROC(COMMIT, enc_commit, dec_commit),
7209 PROC(OPEN, enc_open, dec_open),
7210 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7211 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7212 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7213 PROC(CLOSE, enc_close, dec_close),
7214 PROC(SETATTR, enc_setattr, dec_setattr),
7215 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7216 PROC(RENEW, enc_renew, dec_renew),
7217 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7218 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7219 PROC(LOCK, enc_lock, dec_lock),
7220 PROC(LOCKT, enc_lockt, dec_lockt),
7221 PROC(LOCKU, enc_locku, dec_locku),
7222 PROC(ACCESS, enc_access, dec_access),
7223 PROC(GETATTR, enc_getattr, dec_getattr),
7224 PROC(LOOKUP, enc_lookup, dec_lookup),
7225 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7226 PROC(REMOVE, enc_remove, dec_remove),
7227 PROC(RENAME, enc_rename, dec_rename),
7228 PROC(LINK, enc_link, dec_link),
7229 PROC(SYMLINK, enc_symlink, dec_symlink),
7230 PROC(CREATE, enc_create, dec_create),
7231 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7232 PROC(STATFS, enc_statfs, dec_statfs),
7233 PROC(READLINK, enc_readlink, dec_readlink),
7234 PROC(READDIR, enc_readdir, dec_readdir),
7235 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7236 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7237 PROC(GETACL, enc_getacl, dec_getacl),
7238 PROC(SETACL, enc_setacl, dec_setacl),
7239 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7240 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7241 PROC(SECINFO, enc_secinfo, dec_secinfo),
7242 #if defined(CONFIG_NFS_V4_1)
7243 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7244 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7245 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7246 PROC(SEQUENCE, enc_sequence, dec_sequence),
7247 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7248 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7249 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7250 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7251 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7252 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7253 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7254 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7255 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7256 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7257 PROC(BIND_CONN_TO_SESSION,
7258 enc_bind_conn_to_session, dec_bind_conn_to_session),
7259 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7260 #endif /* CONFIG_NFS_V4_1 */
7261 };
7262
7263 const struct rpc_version nfs_version4 = {
7264 .number = 4,
7265 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7266 .procs = nfs4_procedures
7267 };
7268
7269 /*
7270 * Local variables:
7271 * c-basic-offset: 8
7272 * End:
7273 */
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