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Merge tag 'v3.10.64' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.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 bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3006 int *nfs_retval)
3007 {
3008 __be32 *p;
3009 uint32_t opnum;
3010 int32_t nfserr;
3011
3012 p = xdr_inline_decode(xdr, 8);
3013 if (unlikely(!p))
3014 goto out_overflow;
3015 opnum = be32_to_cpup(p++);
3016 if (unlikely(opnum != expected))
3017 goto out_bad_operation;
3018 nfserr = be32_to_cpup(p);
3019 if (nfserr == NFS_OK)
3020 *nfs_retval = 0;
3021 else
3022 *nfs_retval = nfs4_stat_to_errno(nfserr);
3023 return true;
3024 out_bad_operation:
3025 dprintk("nfs: Server returned operation"
3026 " %d but we issued a request for %d\n",
3027 opnum, expected);
3028 *nfs_retval = -EREMOTEIO;
3029 return false;
3030 out_overflow:
3031 print_overflow_msg(__func__, xdr);
3032 *nfs_retval = -EIO;
3033 return false;
3034 }
3035
3036 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3037 {
3038 int retval;
3039
3040 __decode_op_hdr(xdr, expected, &retval);
3041 return retval;
3042 }
3043
3044 /* Dummy routine */
3045 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3046 {
3047 __be32 *p;
3048 unsigned int strlen;
3049 char *str;
3050
3051 p = xdr_inline_decode(xdr, 12);
3052 if (likely(p))
3053 return decode_opaque_inline(xdr, &strlen, &str);
3054 print_overflow_msg(__func__, xdr);
3055 return -EIO;
3056 }
3057
3058 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3059 {
3060 uint32_t bmlen;
3061 __be32 *p;
3062
3063 p = xdr_inline_decode(xdr, 4);
3064 if (unlikely(!p))
3065 goto out_overflow;
3066 bmlen = be32_to_cpup(p);
3067
3068 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3069 p = xdr_inline_decode(xdr, (bmlen << 2));
3070 if (unlikely(!p))
3071 goto out_overflow;
3072 if (bmlen > 0) {
3073 bitmap[0] = be32_to_cpup(p++);
3074 if (bmlen > 1) {
3075 bitmap[1] = be32_to_cpup(p++);
3076 if (bmlen > 2)
3077 bitmap[2] = be32_to_cpup(p);
3078 }
3079 }
3080 return 0;
3081 out_overflow:
3082 print_overflow_msg(__func__, xdr);
3083 return -EIO;
3084 }
3085
3086 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3087 {
3088 __be32 *p;
3089
3090 p = xdr_inline_decode(xdr, 4);
3091 if (unlikely(!p))
3092 goto out_overflow;
3093 *attrlen = be32_to_cpup(p);
3094 *savep = xdr_stream_pos(xdr);
3095 return 0;
3096 out_overflow:
3097 print_overflow_msg(__func__, xdr);
3098 return -EIO;
3099 }
3100
3101 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3102 {
3103 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3104 int ret;
3105 ret = decode_attr_bitmap(xdr, bitmask);
3106 if (unlikely(ret < 0))
3107 return ret;
3108 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3109 } else
3110 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3111 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3112 bitmask[0], bitmask[1], bitmask[2]);
3113 return 0;
3114 }
3115
3116 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3117 {
3118 __be32 *p;
3119 int ret = 0;
3120
3121 *type = 0;
3122 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3123 return -EIO;
3124 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3125 p = xdr_inline_decode(xdr, 4);
3126 if (unlikely(!p))
3127 goto out_overflow;
3128 *type = be32_to_cpup(p);
3129 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3130 dprintk("%s: bad type %d\n", __func__, *type);
3131 return -EIO;
3132 }
3133 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3134 ret = NFS_ATTR_FATTR_TYPE;
3135 }
3136 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3137 return ret;
3138 out_overflow:
3139 print_overflow_msg(__func__, xdr);
3140 return -EIO;
3141 }
3142
3143 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3144 uint32_t *bitmap, uint32_t *type)
3145 {
3146 __be32 *p;
3147
3148 *type = 0;
3149 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3150 return -EIO;
3151 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3152 p = xdr_inline_decode(xdr, 4);
3153 if (unlikely(!p))
3154 goto out_overflow;
3155 *type = be32_to_cpup(p);
3156 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3157 }
3158 dprintk("%s: expire type=0x%x\n", __func__, *type);
3159 return 0;
3160 out_overflow:
3161 print_overflow_msg(__func__, xdr);
3162 return -EIO;
3163 }
3164
3165 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3166 {
3167 __be32 *p;
3168 int ret = 0;
3169
3170 *change = 0;
3171 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3172 return -EIO;
3173 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3174 p = xdr_inline_decode(xdr, 8);
3175 if (unlikely(!p))
3176 goto out_overflow;
3177 xdr_decode_hyper(p, change);
3178 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3179 ret = NFS_ATTR_FATTR_CHANGE;
3180 }
3181 dprintk("%s: change attribute=%Lu\n", __func__,
3182 (unsigned long long)*change);
3183 return ret;
3184 out_overflow:
3185 print_overflow_msg(__func__, xdr);
3186 return -EIO;
3187 }
3188
3189 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3190 {
3191 __be32 *p;
3192 int ret = 0;
3193
3194 *size = 0;
3195 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3196 return -EIO;
3197 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3198 p = xdr_inline_decode(xdr, 8);
3199 if (unlikely(!p))
3200 goto out_overflow;
3201 xdr_decode_hyper(p, size);
3202 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3203 ret = NFS_ATTR_FATTR_SIZE;
3204 }
3205 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3206 return ret;
3207 out_overflow:
3208 print_overflow_msg(__func__, xdr);
3209 return -EIO;
3210 }
3211
3212 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3213 {
3214 __be32 *p;
3215
3216 *res = 0;
3217 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3218 return -EIO;
3219 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3220 p = xdr_inline_decode(xdr, 4);
3221 if (unlikely(!p))
3222 goto out_overflow;
3223 *res = be32_to_cpup(p);
3224 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3225 }
3226 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3227 return 0;
3228 out_overflow:
3229 print_overflow_msg(__func__, xdr);
3230 return -EIO;
3231 }
3232
3233 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3234 {
3235 __be32 *p;
3236
3237 *res = 0;
3238 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3239 return -EIO;
3240 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3241 p = xdr_inline_decode(xdr, 4);
3242 if (unlikely(!p))
3243 goto out_overflow;
3244 *res = be32_to_cpup(p);
3245 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3246 }
3247 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3248 return 0;
3249 out_overflow:
3250 print_overflow_msg(__func__, xdr);
3251 return -EIO;
3252 }
3253
3254 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3255 {
3256 __be32 *p;
3257 int ret = 0;
3258
3259 fsid->major = 0;
3260 fsid->minor = 0;
3261 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3262 return -EIO;
3263 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3264 p = xdr_inline_decode(xdr, 16);
3265 if (unlikely(!p))
3266 goto out_overflow;
3267 p = xdr_decode_hyper(p, &fsid->major);
3268 xdr_decode_hyper(p, &fsid->minor);
3269 bitmap[0] &= ~FATTR4_WORD0_FSID;
3270 ret = NFS_ATTR_FATTR_FSID;
3271 }
3272 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3273 (unsigned long long)fsid->major,
3274 (unsigned long long)fsid->minor);
3275 return ret;
3276 out_overflow:
3277 print_overflow_msg(__func__, xdr);
3278 return -EIO;
3279 }
3280
3281 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3282 {
3283 __be32 *p;
3284
3285 *res = 60;
3286 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3287 return -EIO;
3288 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3289 p = xdr_inline_decode(xdr, 4);
3290 if (unlikely(!p))
3291 goto out_overflow;
3292 *res = be32_to_cpup(p);
3293 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3294 }
3295 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3296 return 0;
3297 out_overflow:
3298 print_overflow_msg(__func__, xdr);
3299 return -EIO;
3300 }
3301
3302 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3303 {
3304 __be32 *p;
3305
3306 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3307 return -EIO;
3308 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3309 p = xdr_inline_decode(xdr, 4);
3310 if (unlikely(!p))
3311 goto out_overflow;
3312 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3313 *res = -be32_to_cpup(p);
3314 }
3315 return 0;
3316 out_overflow:
3317 print_overflow_msg(__func__, xdr);
3318 return -EIO;
3319 }
3320
3321 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3322 {
3323 __be32 *p;
3324 int len;
3325
3326 if (fh != NULL)
3327 memset(fh, 0, sizeof(*fh));
3328
3329 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3330 return -EIO;
3331 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3332 p = xdr_inline_decode(xdr, 4);
3333 if (unlikely(!p))
3334 goto out_overflow;
3335 len = be32_to_cpup(p);
3336 if (len > NFS4_FHSIZE)
3337 return -EIO;
3338 p = xdr_inline_decode(xdr, len);
3339 if (unlikely(!p))
3340 goto out_overflow;
3341 if (fh != NULL) {
3342 memcpy(fh->data, p, len);
3343 fh->size = len;
3344 }
3345 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3346 }
3347 return 0;
3348 out_overflow:
3349 print_overflow_msg(__func__, xdr);
3350 return -EIO;
3351 }
3352
3353 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3354 {
3355 __be32 *p;
3356
3357 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3358 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3359 return -EIO;
3360 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3361 p = xdr_inline_decode(xdr, 4);
3362 if (unlikely(!p))
3363 goto out_overflow;
3364 *res = be32_to_cpup(p);
3365 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3366 }
3367 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3368 return 0;
3369 out_overflow:
3370 print_overflow_msg(__func__, xdr);
3371 return -EIO;
3372 }
3373
3374 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3375 {
3376 __be32 *p;
3377 int ret = 0;
3378
3379 *fileid = 0;
3380 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3381 return -EIO;
3382 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3383 p = xdr_inline_decode(xdr, 8);
3384 if (unlikely(!p))
3385 goto out_overflow;
3386 xdr_decode_hyper(p, fileid);
3387 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3388 ret = NFS_ATTR_FATTR_FILEID;
3389 }
3390 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3391 return ret;
3392 out_overflow:
3393 print_overflow_msg(__func__, xdr);
3394 return -EIO;
3395 }
3396
3397 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3398 {
3399 __be32 *p;
3400 int ret = 0;
3401
3402 *fileid = 0;
3403 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3404 return -EIO;
3405 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3406 p = xdr_inline_decode(xdr, 8);
3407 if (unlikely(!p))
3408 goto out_overflow;
3409 xdr_decode_hyper(p, fileid);
3410 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3411 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3412 }
3413 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3414 return ret;
3415 out_overflow:
3416 print_overflow_msg(__func__, xdr);
3417 return -EIO;
3418 }
3419
3420 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3421 {
3422 __be32 *p;
3423 int status = 0;
3424
3425 *res = 0;
3426 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3427 return -EIO;
3428 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3429 p = xdr_inline_decode(xdr, 8);
3430 if (unlikely(!p))
3431 goto out_overflow;
3432 xdr_decode_hyper(p, res);
3433 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3434 }
3435 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3436 return status;
3437 out_overflow:
3438 print_overflow_msg(__func__, xdr);
3439 return -EIO;
3440 }
3441
3442 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3443 {
3444 __be32 *p;
3445 int status = 0;
3446
3447 *res = 0;
3448 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3449 return -EIO;
3450 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3451 p = xdr_inline_decode(xdr, 8);
3452 if (unlikely(!p))
3453 goto out_overflow;
3454 xdr_decode_hyper(p, res);
3455 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3456 }
3457 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3458 return status;
3459 out_overflow:
3460 print_overflow_msg(__func__, xdr);
3461 return -EIO;
3462 }
3463
3464 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3465 {
3466 __be32 *p;
3467 int status = 0;
3468
3469 *res = 0;
3470 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3471 return -EIO;
3472 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3473 p = xdr_inline_decode(xdr, 8);
3474 if (unlikely(!p))
3475 goto out_overflow;
3476 xdr_decode_hyper(p, res);
3477 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3478 }
3479 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3480 return status;
3481 out_overflow:
3482 print_overflow_msg(__func__, xdr);
3483 return -EIO;
3484 }
3485
3486 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3487 {
3488 u32 n;
3489 __be32 *p;
3490 int status = 0;
3491
3492 p = xdr_inline_decode(xdr, 4);
3493 if (unlikely(!p))
3494 goto out_overflow;
3495 n = be32_to_cpup(p);
3496 if (n == 0)
3497 goto root_path;
3498 dprintk("pathname4: ");
3499 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3500 dprintk("cannot parse %d components in path\n", n);
3501 goto out_eio;
3502 }
3503 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3504 struct nfs4_string *component = &path->components[path->ncomponents];
3505 status = decode_opaque_inline(xdr, &component->len, &component->data);
3506 if (unlikely(status != 0))
3507 goto out_eio;
3508 ifdebug (XDR)
3509 pr_cont("%s%.*s ",
3510 (path->ncomponents != n ? "/ " : ""),
3511 component->len, component->data);
3512 }
3513 out:
3514 return status;
3515 root_path:
3516 /* a root pathname is sent as a zero component4 */
3517 path->ncomponents = 1;
3518 path->components[0].len=0;
3519 path->components[0].data=NULL;
3520 dprintk("pathname4: /\n");
3521 goto out;
3522 out_eio:
3523 dprintk(" status %d", status);
3524 status = -EIO;
3525 goto out;
3526 out_overflow:
3527 print_overflow_msg(__func__, xdr);
3528 return -EIO;
3529 }
3530
3531 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3532 {
3533 int n;
3534 __be32 *p;
3535 int status = -EIO;
3536
3537 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3538 goto out;
3539 status = 0;
3540 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3541 goto out;
3542 status = -EIO;
3543 /* Ignore borken servers that return unrequested attrs */
3544 if (unlikely(res == NULL))
3545 goto out;
3546 dprintk("%s: fsroot:\n", __func__);
3547 status = decode_pathname(xdr, &res->fs_path);
3548 if (unlikely(status != 0))
3549 goto out;
3550 p = xdr_inline_decode(xdr, 4);
3551 if (unlikely(!p))
3552 goto out_overflow;
3553 n = be32_to_cpup(p);
3554 if (n <= 0)
3555 goto out_eio;
3556 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3557 u32 m;
3558 struct nfs4_fs_location *loc;
3559
3560 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3561 break;
3562 loc = &res->locations[res->nlocations];
3563 p = xdr_inline_decode(xdr, 4);
3564 if (unlikely(!p))
3565 goto out_overflow;
3566 m = be32_to_cpup(p);
3567
3568 dprintk("%s: servers:\n", __func__);
3569 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3570 struct nfs4_string *server;
3571
3572 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3573 unsigned int i;
3574 dprintk("%s: using first %u of %u servers "
3575 "returned for location %u\n",
3576 __func__,
3577 NFS4_FS_LOCATION_MAXSERVERS,
3578 m, res->nlocations);
3579 for (i = loc->nservers; i < m; i++) {
3580 unsigned int len;
3581 char *data;
3582 status = decode_opaque_inline(xdr, &len, &data);
3583 if (unlikely(status != 0))
3584 goto out_eio;
3585 }
3586 break;
3587 }
3588 server = &loc->servers[loc->nservers];
3589 status = decode_opaque_inline(xdr, &server->len, &server->data);
3590 if (unlikely(status != 0))
3591 goto out_eio;
3592 dprintk("%s ", server->data);
3593 }
3594 status = decode_pathname(xdr, &loc->rootpath);
3595 if (unlikely(status != 0))
3596 goto out_eio;
3597 }
3598 if (res->nlocations != 0)
3599 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3600 out:
3601 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3602 return status;
3603 out_overflow:
3604 print_overflow_msg(__func__, xdr);
3605 out_eio:
3606 status = -EIO;
3607 goto out;
3608 }
3609
3610 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3611 {
3612 __be32 *p;
3613 int status = 0;
3614
3615 *res = 0;
3616 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3617 return -EIO;
3618 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3619 p = xdr_inline_decode(xdr, 8);
3620 if (unlikely(!p))
3621 goto out_overflow;
3622 xdr_decode_hyper(p, res);
3623 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3624 }
3625 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3626 return status;
3627 out_overflow:
3628 print_overflow_msg(__func__, xdr);
3629 return -EIO;
3630 }
3631
3632 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3633 {
3634 __be32 *p;
3635 int status = 0;
3636
3637 *maxlink = 1;
3638 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3639 return -EIO;
3640 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3641 p = xdr_inline_decode(xdr, 4);
3642 if (unlikely(!p))
3643 goto out_overflow;
3644 *maxlink = be32_to_cpup(p);
3645 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3646 }
3647 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3648 return status;
3649 out_overflow:
3650 print_overflow_msg(__func__, xdr);
3651 return -EIO;
3652 }
3653
3654 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3655 {
3656 __be32 *p;
3657 int status = 0;
3658
3659 *maxname = 1024;
3660 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3661 return -EIO;
3662 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3663 p = xdr_inline_decode(xdr, 4);
3664 if (unlikely(!p))
3665 goto out_overflow;
3666 *maxname = be32_to_cpup(p);
3667 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3668 }
3669 dprintk("%s: maxname=%u\n", __func__, *maxname);
3670 return status;
3671 out_overflow:
3672 print_overflow_msg(__func__, xdr);
3673 return -EIO;
3674 }
3675
3676 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3677 {
3678 __be32 *p;
3679 int status = 0;
3680
3681 *res = 1024;
3682 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3683 return -EIO;
3684 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3685 uint64_t maxread;
3686 p = xdr_inline_decode(xdr, 8);
3687 if (unlikely(!p))
3688 goto out_overflow;
3689 xdr_decode_hyper(p, &maxread);
3690 if (maxread > 0x7FFFFFFF)
3691 maxread = 0x7FFFFFFF;
3692 *res = (uint32_t)maxread;
3693 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3694 }
3695 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3696 return status;
3697 out_overflow:
3698 print_overflow_msg(__func__, xdr);
3699 return -EIO;
3700 }
3701
3702 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3703 {
3704 __be32 *p;
3705 int status = 0;
3706
3707 *res = 1024;
3708 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3709 return -EIO;
3710 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3711 uint64_t maxwrite;
3712 p = xdr_inline_decode(xdr, 8);
3713 if (unlikely(!p))
3714 goto out_overflow;
3715 xdr_decode_hyper(p, &maxwrite);
3716 if (maxwrite > 0x7FFFFFFF)
3717 maxwrite = 0x7FFFFFFF;
3718 *res = (uint32_t)maxwrite;
3719 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3720 }
3721 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3722 return status;
3723 out_overflow:
3724 print_overflow_msg(__func__, xdr);
3725 return -EIO;
3726 }
3727
3728 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3729 {
3730 uint32_t tmp;
3731 __be32 *p;
3732 int ret = 0;
3733
3734 *mode = 0;
3735 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3736 return -EIO;
3737 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3738 p = xdr_inline_decode(xdr, 4);
3739 if (unlikely(!p))
3740 goto out_overflow;
3741 tmp = be32_to_cpup(p);
3742 *mode = tmp & ~S_IFMT;
3743 bitmap[1] &= ~FATTR4_WORD1_MODE;
3744 ret = NFS_ATTR_FATTR_MODE;
3745 }
3746 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3747 return ret;
3748 out_overflow:
3749 print_overflow_msg(__func__, xdr);
3750 return -EIO;
3751 }
3752
3753 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3754 {
3755 __be32 *p;
3756 int ret = 0;
3757
3758 *nlink = 1;
3759 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3760 return -EIO;
3761 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3762 p = xdr_inline_decode(xdr, 4);
3763 if (unlikely(!p))
3764 goto out_overflow;
3765 *nlink = be32_to_cpup(p);
3766 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3767 ret = NFS_ATTR_FATTR_NLINK;
3768 }
3769 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3770 return ret;
3771 out_overflow:
3772 print_overflow_msg(__func__, xdr);
3773 return -EIO;
3774 }
3775
3776 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3777 const struct nfs_server *server, kuid_t *uid,
3778 struct nfs4_string *owner_name)
3779 {
3780 uint32_t len;
3781 __be32 *p;
3782 int ret = 0;
3783
3784 *uid = make_kuid(&init_user_ns, -2);
3785 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3786 return -EIO;
3787 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3788 p = xdr_inline_decode(xdr, 4);
3789 if (unlikely(!p))
3790 goto out_overflow;
3791 len = be32_to_cpup(p);
3792 p = xdr_inline_decode(xdr, len);
3793 if (unlikely(!p))
3794 goto out_overflow;
3795 if (owner_name != NULL) {
3796 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3797 if (owner_name->data != NULL) {
3798 owner_name->len = len;
3799 ret = NFS_ATTR_FATTR_OWNER_NAME;
3800 }
3801 } else if (len < XDR_MAX_NETOBJ) {
3802 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3803 ret = NFS_ATTR_FATTR_OWNER;
3804 else
3805 dprintk("%s: nfs_map_name_to_uid failed!\n",
3806 __func__);
3807 } else
3808 dprintk("%s: name too long (%u)!\n",
3809 __func__, len);
3810 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3811 }
3812 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3813 return ret;
3814 out_overflow:
3815 print_overflow_msg(__func__, xdr);
3816 return -EIO;
3817 }
3818
3819 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3820 const struct nfs_server *server, kgid_t *gid,
3821 struct nfs4_string *group_name)
3822 {
3823 uint32_t len;
3824 __be32 *p;
3825 int ret = 0;
3826
3827 *gid = make_kgid(&init_user_ns, -2);
3828 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3829 return -EIO;
3830 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3831 p = xdr_inline_decode(xdr, 4);
3832 if (unlikely(!p))
3833 goto out_overflow;
3834 len = be32_to_cpup(p);
3835 p = xdr_inline_decode(xdr, len);
3836 if (unlikely(!p))
3837 goto out_overflow;
3838 if (group_name != NULL) {
3839 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3840 if (group_name->data != NULL) {
3841 group_name->len = len;
3842 ret = NFS_ATTR_FATTR_GROUP_NAME;
3843 }
3844 } else if (len < XDR_MAX_NETOBJ) {
3845 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3846 ret = NFS_ATTR_FATTR_GROUP;
3847 else
3848 dprintk("%s: nfs_map_group_to_gid failed!\n",
3849 __func__);
3850 } else
3851 dprintk("%s: name too long (%u)!\n",
3852 __func__, len);
3853 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3854 }
3855 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3856 return ret;
3857 out_overflow:
3858 print_overflow_msg(__func__, xdr);
3859 return -EIO;
3860 }
3861
3862 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3863 {
3864 uint32_t major = 0, minor = 0;
3865 __be32 *p;
3866 int ret = 0;
3867
3868 *rdev = MKDEV(0,0);
3869 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3870 return -EIO;
3871 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3872 dev_t tmp;
3873
3874 p = xdr_inline_decode(xdr, 8);
3875 if (unlikely(!p))
3876 goto out_overflow;
3877 major = be32_to_cpup(p++);
3878 minor = be32_to_cpup(p);
3879 tmp = MKDEV(major, minor);
3880 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3881 *rdev = tmp;
3882 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3883 ret = NFS_ATTR_FATTR_RDEV;
3884 }
3885 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3886 return ret;
3887 out_overflow:
3888 print_overflow_msg(__func__, xdr);
3889 return -EIO;
3890 }
3891
3892 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3893 {
3894 __be32 *p;
3895 int status = 0;
3896
3897 *res = 0;
3898 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3899 return -EIO;
3900 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3901 p = xdr_inline_decode(xdr, 8);
3902 if (unlikely(!p))
3903 goto out_overflow;
3904 xdr_decode_hyper(p, res);
3905 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3906 }
3907 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3908 return status;
3909 out_overflow:
3910 print_overflow_msg(__func__, xdr);
3911 return -EIO;
3912 }
3913
3914 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3915 {
3916 __be32 *p;
3917 int status = 0;
3918
3919 *res = 0;
3920 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3921 return -EIO;
3922 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3923 p = xdr_inline_decode(xdr, 8);
3924 if (unlikely(!p))
3925 goto out_overflow;
3926 xdr_decode_hyper(p, res);
3927 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3928 }
3929 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3930 return status;
3931 out_overflow:
3932 print_overflow_msg(__func__, xdr);
3933 return -EIO;
3934 }
3935
3936 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3937 {
3938 __be32 *p;
3939 int status = 0;
3940
3941 *res = 0;
3942 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3943 return -EIO;
3944 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3945 p = xdr_inline_decode(xdr, 8);
3946 if (unlikely(!p))
3947 goto out_overflow;
3948 xdr_decode_hyper(p, res);
3949 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3950 }
3951 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3952 return status;
3953 out_overflow:
3954 print_overflow_msg(__func__, xdr);
3955 return -EIO;
3956 }
3957
3958 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3959 {
3960 __be32 *p;
3961 int ret = 0;
3962
3963 *used = 0;
3964 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3965 return -EIO;
3966 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3967 p = xdr_inline_decode(xdr, 8);
3968 if (unlikely(!p))
3969 goto out_overflow;
3970 xdr_decode_hyper(p, used);
3971 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3972 ret = NFS_ATTR_FATTR_SPACE_USED;
3973 }
3974 dprintk("%s: space used=%Lu\n", __func__,
3975 (unsigned long long)*used);
3976 return ret;
3977 out_overflow:
3978 print_overflow_msg(__func__, xdr);
3979 return -EIO;
3980 }
3981
3982 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3983 {
3984 __be32 *p;
3985 uint64_t sec;
3986 uint32_t nsec;
3987
3988 p = xdr_inline_decode(xdr, 12);
3989 if (unlikely(!p))
3990 goto out_overflow;
3991 p = xdr_decode_hyper(p, &sec);
3992 nsec = be32_to_cpup(p);
3993 time->tv_sec = (time_t)sec;
3994 time->tv_nsec = (long)nsec;
3995 return 0;
3996 out_overflow:
3997 print_overflow_msg(__func__, xdr);
3998 return -EIO;
3999 }
4000
4001 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4002 {
4003 int status = 0;
4004
4005 time->tv_sec = 0;
4006 time->tv_nsec = 0;
4007 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4008 return -EIO;
4009 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4010 status = decode_attr_time(xdr, time);
4011 if (status == 0)
4012 status = NFS_ATTR_FATTR_ATIME;
4013 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4014 }
4015 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4016 return status;
4017 }
4018
4019 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4020 {
4021 int status = 0;
4022
4023 time->tv_sec = 0;
4024 time->tv_nsec = 0;
4025 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4026 return -EIO;
4027 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4028 status = decode_attr_time(xdr, time);
4029 if (status == 0)
4030 status = NFS_ATTR_FATTR_CTIME;
4031 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4032 }
4033 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4034 return status;
4035 }
4036
4037 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4038 struct timespec *time)
4039 {
4040 int status = 0;
4041
4042 time->tv_sec = 0;
4043 time->tv_nsec = 0;
4044 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4045 return -EIO;
4046 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4047 status = decode_attr_time(xdr, time);
4048 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4049 }
4050 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4051 (long)time->tv_nsec);
4052 return status;
4053 }
4054
4055 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4056 {
4057 int status = 0;
4058
4059 time->tv_sec = 0;
4060 time->tv_nsec = 0;
4061 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4062 return -EIO;
4063 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4064 status = decode_attr_time(xdr, time);
4065 if (status == 0)
4066 status = NFS_ATTR_FATTR_MTIME;
4067 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4068 }
4069 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4070 return status;
4071 }
4072
4073 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4074 {
4075 unsigned int attrwords = XDR_QUADLEN(attrlen);
4076 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4077
4078 if (unlikely(attrwords != nwords)) {
4079 dprintk("%s: server returned incorrect attribute length: "
4080 "%u %c %u\n",
4081 __func__,
4082 attrwords << 2,
4083 (attrwords < nwords) ? '<' : '>',
4084 nwords << 2);
4085 return -EIO;
4086 }
4087 return 0;
4088 }
4089
4090 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4091 {
4092 __be32 *p;
4093
4094 p = xdr_inline_decode(xdr, 20);
4095 if (unlikely(!p))
4096 goto out_overflow;
4097 cinfo->atomic = be32_to_cpup(p++);
4098 p = xdr_decode_hyper(p, &cinfo->before);
4099 xdr_decode_hyper(p, &cinfo->after);
4100 return 0;
4101 out_overflow:
4102 print_overflow_msg(__func__, xdr);
4103 return -EIO;
4104 }
4105
4106 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4107 {
4108 __be32 *p;
4109 uint32_t supp, acc;
4110 int status;
4111
4112 status = decode_op_hdr(xdr, OP_ACCESS);
4113 if (status)
4114 return status;
4115 p = xdr_inline_decode(xdr, 8);
4116 if (unlikely(!p))
4117 goto out_overflow;
4118 supp = be32_to_cpup(p++);
4119 acc = be32_to_cpup(p);
4120 *supported = supp;
4121 *access = acc;
4122 return 0;
4123 out_overflow:
4124 print_overflow_msg(__func__, xdr);
4125 return -EIO;
4126 }
4127
4128 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4129 {
4130 __be32 *p;
4131
4132 p = xdr_inline_decode(xdr, len);
4133 if (likely(p)) {
4134 memcpy(buf, p, len);
4135 return 0;
4136 }
4137 print_overflow_msg(__func__, xdr);
4138 return -EIO;
4139 }
4140
4141 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4142 {
4143 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4144 }
4145
4146 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4147 {
4148 int status;
4149
4150 status = decode_op_hdr(xdr, OP_CLOSE);
4151 if (status != -EIO)
4152 nfs_increment_open_seqid(status, res->seqid);
4153 if (!status)
4154 status = decode_stateid(xdr, &res->stateid);
4155 return status;
4156 }
4157
4158 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4159 {
4160 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4161 }
4162
4163 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4164 {
4165 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4166 }
4167
4168 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4169 {
4170 int status;
4171
4172 status = decode_op_hdr(xdr, OP_COMMIT);
4173 if (!status)
4174 status = decode_write_verifier(xdr, &res->verf->verifier);
4175 return status;
4176 }
4177
4178 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4179 {
4180 __be32 *p;
4181 uint32_t bmlen;
4182 int status;
4183
4184 status = decode_op_hdr(xdr, OP_CREATE);
4185 if (status)
4186 return status;
4187 if ((status = decode_change_info(xdr, cinfo)))
4188 return status;
4189 p = xdr_inline_decode(xdr, 4);
4190 if (unlikely(!p))
4191 goto out_overflow;
4192 bmlen = be32_to_cpup(p);
4193 p = xdr_inline_decode(xdr, bmlen << 2);
4194 if (likely(p))
4195 return 0;
4196 out_overflow:
4197 print_overflow_msg(__func__, xdr);
4198 return -EIO;
4199 }
4200
4201 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4202 {
4203 unsigned int savep;
4204 uint32_t attrlen, bitmap[3] = {0};
4205 int status;
4206
4207 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4208 goto xdr_error;
4209 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4210 goto xdr_error;
4211 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4212 goto xdr_error;
4213 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4214 goto xdr_error;
4215 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4216 &res->fh_expire_type)) != 0)
4217 goto xdr_error;
4218 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4219 goto xdr_error;
4220 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4221 goto xdr_error;
4222 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4223 goto xdr_error;
4224 status = verify_attr_len(xdr, savep, attrlen);
4225 xdr_error:
4226 dprintk("%s: xdr returned %d!\n", __func__, -status);
4227 return status;
4228 }
4229
4230 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4231 {
4232 unsigned int savep;
4233 uint32_t attrlen, bitmap[3] = {0};
4234 int status;
4235
4236 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4237 goto xdr_error;
4238 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4239 goto xdr_error;
4240 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4241 goto xdr_error;
4242
4243 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4244 goto xdr_error;
4245 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4246 goto xdr_error;
4247 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4248 goto xdr_error;
4249 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4250 goto xdr_error;
4251 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4252 goto xdr_error;
4253 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4254 goto xdr_error;
4255
4256 status = verify_attr_len(xdr, savep, attrlen);
4257 xdr_error:
4258 dprintk("%s: xdr returned %d!\n", __func__, -status);
4259 return status;
4260 }
4261
4262 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4263 {
4264 unsigned int savep;
4265 uint32_t attrlen, bitmap[3] = {0};
4266 int status;
4267
4268 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4269 goto xdr_error;
4270 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4271 goto xdr_error;
4272 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4273 goto xdr_error;
4274
4275 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4276 goto xdr_error;
4277 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4278 goto xdr_error;
4279
4280 status = verify_attr_len(xdr, savep, attrlen);
4281 xdr_error:
4282 dprintk("%s: xdr returned %d!\n", __func__, -status);
4283 return status;
4284 }
4285
4286 static int decode_threshold_hint(struct xdr_stream *xdr,
4287 uint32_t *bitmap,
4288 uint64_t *res,
4289 uint32_t hint_bit)
4290 {
4291 __be32 *p;
4292
4293 *res = 0;
4294 if (likely(bitmap[0] & hint_bit)) {
4295 p = xdr_inline_decode(xdr, 8);
4296 if (unlikely(!p))
4297 goto out_overflow;
4298 xdr_decode_hyper(p, res);
4299 }
4300 return 0;
4301 out_overflow:
4302 print_overflow_msg(__func__, xdr);
4303 return -EIO;
4304 }
4305
4306 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4307 struct nfs4_threshold *res)
4308 {
4309 __be32 *p;
4310 unsigned int savep;
4311 uint32_t bitmap[3] = {0,}, attrlen;
4312 int status;
4313
4314 /* layout type */
4315 p = xdr_inline_decode(xdr, 4);
4316 if (unlikely(!p)) {
4317 print_overflow_msg(__func__, xdr);
4318 return -EIO;
4319 }
4320 res->l_type = be32_to_cpup(p);
4321
4322 /* thi_hintset bitmap */
4323 status = decode_attr_bitmap(xdr, bitmap);
4324 if (status < 0)
4325 goto xdr_error;
4326
4327 /* thi_hintlist length */
4328 status = decode_attr_length(xdr, &attrlen, &savep);
4329 if (status < 0)
4330 goto xdr_error;
4331 /* thi_hintlist */
4332 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4333 if (status < 0)
4334 goto xdr_error;
4335 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4336 if (status < 0)
4337 goto xdr_error;
4338 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4339 THRESHOLD_RD_IO);
4340 if (status < 0)
4341 goto xdr_error;
4342 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4343 THRESHOLD_WR_IO);
4344 if (status < 0)
4345 goto xdr_error;
4346
4347 status = verify_attr_len(xdr, savep, attrlen);
4348 res->bm = bitmap[0];
4349
4350 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4351 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4352 res->wr_io_sz);
4353 xdr_error:
4354 dprintk("%s ret=%d!\n", __func__, status);
4355 return status;
4356 }
4357
4358 /*
4359 * Thresholds on pNFS direct I/O vrs MDS I/O
4360 */
4361 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4362 uint32_t *bitmap,
4363 struct nfs4_threshold *res)
4364 {
4365 __be32 *p;
4366 int status = 0;
4367 uint32_t num;
4368
4369 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4370 return -EIO;
4371 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4372 /* Did the server return an unrequested attribute? */
4373 if (unlikely(res == NULL))
4374 return -EREMOTEIO;
4375 p = xdr_inline_decode(xdr, 4);
4376 if (unlikely(!p))
4377 goto out_overflow;
4378 num = be32_to_cpup(p);
4379 if (num == 0)
4380 return 0;
4381 if (num > 1)
4382 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4383 "drivers per filesystem not supported\n",
4384 __func__);
4385
4386 status = decode_first_threshold_item4(xdr, res);
4387 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4388 }
4389 return status;
4390 out_overflow:
4391 print_overflow_msg(__func__, xdr);
4392 return -EIO;
4393 }
4394
4395 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4396 struct nfs_fattr *fattr, struct nfs_fh *fh,
4397 struct nfs4_fs_locations *fs_loc,
4398 const struct nfs_server *server)
4399 {
4400 int status;
4401 umode_t fmode = 0;
4402 uint32_t type;
4403 int32_t err;
4404
4405 status = decode_attr_type(xdr, bitmap, &type);
4406 if (status < 0)
4407 goto xdr_error;
4408 fattr->mode = 0;
4409 if (status != 0) {
4410 fattr->mode |= nfs_type2fmt[type];
4411 fattr->valid |= status;
4412 }
4413
4414 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4415 if (status < 0)
4416 goto xdr_error;
4417 fattr->valid |= status;
4418
4419 status = decode_attr_size(xdr, bitmap, &fattr->size);
4420 if (status < 0)
4421 goto xdr_error;
4422 fattr->valid |= status;
4423
4424 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4425 if (status < 0)
4426 goto xdr_error;
4427 fattr->valid |= status;
4428
4429 err = 0;
4430 status = decode_attr_error(xdr, bitmap, &err);
4431 if (status < 0)
4432 goto xdr_error;
4433
4434 status = decode_attr_filehandle(xdr, bitmap, fh);
4435 if (status < 0)
4436 goto xdr_error;
4437
4438 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4439 if (status < 0)
4440 goto xdr_error;
4441 fattr->valid |= status;
4442
4443 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4444 if (status < 0)
4445 goto xdr_error;
4446 fattr->valid |= status;
4447
4448 status = decode_attr_mode(xdr, bitmap, &fmode);
4449 if (status < 0)
4450 goto xdr_error;
4451 if (status != 0) {
4452 fattr->mode |= fmode;
4453 fattr->valid |= status;
4454 }
4455
4456 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4457 if (status < 0)
4458 goto xdr_error;
4459 fattr->valid |= status;
4460
4461 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4462 if (status < 0)
4463 goto xdr_error;
4464 fattr->valid |= status;
4465
4466 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4467 if (status < 0)
4468 goto xdr_error;
4469 fattr->valid |= status;
4470
4471 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4472 if (status < 0)
4473 goto xdr_error;
4474 fattr->valid |= status;
4475
4476 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4477 if (status < 0)
4478 goto xdr_error;
4479 fattr->valid |= status;
4480
4481 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4482 if (status < 0)
4483 goto xdr_error;
4484 fattr->valid |= status;
4485
4486 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4487 if (status < 0)
4488 goto xdr_error;
4489 fattr->valid |= status;
4490
4491 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4492 if (status < 0)
4493 goto xdr_error;
4494 fattr->valid |= status;
4495
4496 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4497 if (status < 0)
4498 goto xdr_error;
4499 fattr->valid |= status;
4500
4501 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4502 if (status < 0)
4503 goto xdr_error;
4504
4505 xdr_error:
4506 dprintk("%s: xdr returned %d\n", __func__, -status);
4507 return status;
4508 }
4509
4510 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4511 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4512 const struct nfs_server *server)
4513 {
4514 unsigned int savep;
4515 uint32_t attrlen,
4516 bitmap[3] = {0};
4517 int status;
4518
4519 status = decode_op_hdr(xdr, OP_GETATTR);
4520 if (status < 0)
4521 goto xdr_error;
4522
4523 status = decode_attr_bitmap(xdr, bitmap);
4524 if (status < 0)
4525 goto xdr_error;
4526
4527 status = decode_attr_length(xdr, &attrlen, &savep);
4528 if (status < 0)
4529 goto xdr_error;
4530
4531 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4532 if (status < 0)
4533 goto xdr_error;
4534
4535 status = verify_attr_len(xdr, savep, attrlen);
4536 xdr_error:
4537 dprintk("%s: xdr returned %d\n", __func__, -status);
4538 return status;
4539 }
4540
4541 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4542 const struct nfs_server *server)
4543 {
4544 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4545 }
4546
4547 /*
4548 * Decode potentially multiple layout types. Currently we only support
4549 * one layout driver per file system.
4550 */
4551 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4552 uint32_t *layouttype)
4553 {
4554 uint32_t *p;
4555 int num;
4556
4557 p = xdr_inline_decode(xdr, 4);
4558 if (unlikely(!p))
4559 goto out_overflow;
4560 num = be32_to_cpup(p);
4561
4562 /* pNFS is not supported by the underlying file system */
4563 if (num == 0) {
4564 *layouttype = 0;
4565 return 0;
4566 }
4567 if (num > 1)
4568 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4569 "drivers per filesystem not supported\n", __func__);
4570
4571 /* Decode and set first layout type, move xdr->p past unused types */
4572 p = xdr_inline_decode(xdr, num * 4);
4573 if (unlikely(!p))
4574 goto out_overflow;
4575 *layouttype = be32_to_cpup(p);
4576 return 0;
4577 out_overflow:
4578 print_overflow_msg(__func__, xdr);
4579 return -EIO;
4580 }
4581
4582 /*
4583 * The type of file system exported.
4584 * Note we must ensure that layouttype is set in any non-error case.
4585 */
4586 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4587 uint32_t *layouttype)
4588 {
4589 int status = 0;
4590
4591 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4592 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4593 return -EIO;
4594 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4595 status = decode_first_pnfs_layout_type(xdr, layouttype);
4596 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4597 } else
4598 *layouttype = 0;
4599 return status;
4600 }
4601
4602 /*
4603 * The prefered block size for layout directed io
4604 */
4605 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4606 uint32_t *res)
4607 {
4608 __be32 *p;
4609
4610 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4611 *res = 0;
4612 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4613 p = xdr_inline_decode(xdr, 4);
4614 if (unlikely(!p)) {
4615 print_overflow_msg(__func__, xdr);
4616 return -EIO;
4617 }
4618 *res = be32_to_cpup(p);
4619 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4620 }
4621 return 0;
4622 }
4623
4624 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4625 {
4626 unsigned int savep;
4627 uint32_t attrlen, bitmap[3];
4628 int status;
4629
4630 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4631 goto xdr_error;
4632 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4633 goto xdr_error;
4634 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4635 goto xdr_error;
4636
4637 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4638
4639 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4640 goto xdr_error;
4641 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4642 goto xdr_error;
4643 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4644 goto xdr_error;
4645 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4646 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4647 goto xdr_error;
4648 fsinfo->wtpref = fsinfo->wtmax;
4649 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4650 if (status != 0)
4651 goto xdr_error;
4652 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4653 if (status != 0)
4654 goto xdr_error;
4655 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4656 if (status)
4657 goto xdr_error;
4658
4659 status = verify_attr_len(xdr, savep, attrlen);
4660 xdr_error:
4661 dprintk("%s: xdr returned %d!\n", __func__, -status);
4662 return status;
4663 }
4664
4665 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4666 {
4667 __be32 *p;
4668 uint32_t len;
4669 int status;
4670
4671 /* Zero handle first to allow comparisons */
4672 memset(fh, 0, sizeof(*fh));
4673
4674 status = decode_op_hdr(xdr, OP_GETFH);
4675 if (status)
4676 return status;
4677
4678 p = xdr_inline_decode(xdr, 4);
4679 if (unlikely(!p))
4680 goto out_overflow;
4681 len = be32_to_cpup(p);
4682 if (len > NFS4_FHSIZE)
4683 return -EIO;
4684 fh->size = len;
4685 p = xdr_inline_decode(xdr, len);
4686 if (unlikely(!p))
4687 goto out_overflow;
4688 memcpy(fh->data, p, len);
4689 return 0;
4690 out_overflow:
4691 print_overflow_msg(__func__, xdr);
4692 return -EIO;
4693 }
4694
4695 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4696 {
4697 int status;
4698
4699 status = decode_op_hdr(xdr, OP_LINK);
4700 if (status)
4701 return status;
4702 return decode_change_info(xdr, cinfo);
4703 }
4704
4705 /*
4706 * We create the owner, so we know a proper owner.id length is 4.
4707 */
4708 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4709 {
4710 uint64_t offset, length, clientid;
4711 __be32 *p;
4712 uint32_t namelen, type;
4713
4714 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4715 if (unlikely(!p))
4716 goto out_overflow;
4717 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4718 p = xdr_decode_hyper(p, &length);
4719 type = be32_to_cpup(p++); /* 4 byte read */
4720 if (fl != NULL) { /* manipulate file lock */
4721 fl->fl_start = (loff_t)offset;
4722 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4723 if (length == ~(uint64_t)0)
4724 fl->fl_end = OFFSET_MAX;
4725 fl->fl_type = F_WRLCK;
4726 if (type & 1)
4727 fl->fl_type = F_RDLCK;
4728 fl->fl_pid = 0;
4729 }
4730 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4731 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4732 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4733 if (likely(p))
4734 return -NFS4ERR_DENIED;
4735 out_overflow:
4736 print_overflow_msg(__func__, xdr);
4737 return -EIO;
4738 }
4739
4740 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4741 {
4742 int status;
4743
4744 status = decode_op_hdr(xdr, OP_LOCK);
4745 if (status == -EIO)
4746 goto out;
4747 if (status == 0) {
4748 status = decode_stateid(xdr, &res->stateid);
4749 if (unlikely(status))
4750 goto out;
4751 } else if (status == -NFS4ERR_DENIED)
4752 status = decode_lock_denied(xdr, NULL);
4753 if (res->open_seqid != NULL)
4754 nfs_increment_open_seqid(status, res->open_seqid);
4755 nfs_increment_lock_seqid(status, res->lock_seqid);
4756 out:
4757 return status;
4758 }
4759
4760 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4761 {
4762 int status;
4763 status = decode_op_hdr(xdr, OP_LOCKT);
4764 if (status == -NFS4ERR_DENIED)
4765 return decode_lock_denied(xdr, res->denied);
4766 return status;
4767 }
4768
4769 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4770 {
4771 int status;
4772
4773 status = decode_op_hdr(xdr, OP_LOCKU);
4774 if (status != -EIO)
4775 nfs_increment_lock_seqid(status, res->seqid);
4776 if (status == 0)
4777 status = decode_stateid(xdr, &res->stateid);
4778 return status;
4779 }
4780
4781 static int decode_release_lockowner(struct xdr_stream *xdr)
4782 {
4783 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4784 }
4785
4786 static int decode_lookup(struct xdr_stream *xdr)
4787 {
4788 return decode_op_hdr(xdr, OP_LOOKUP);
4789 }
4790
4791 /* This is too sick! */
4792 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4793 {
4794 __be32 *p;
4795 uint32_t limit_type, nblocks, blocksize;
4796
4797 p = xdr_inline_decode(xdr, 12);
4798 if (unlikely(!p))
4799 goto out_overflow;
4800 limit_type = be32_to_cpup(p++);
4801 switch (limit_type) {
4802 case 1:
4803 xdr_decode_hyper(p, maxsize);
4804 break;
4805 case 2:
4806 nblocks = be32_to_cpup(p++);
4807 blocksize = be32_to_cpup(p);
4808 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4809 }
4810 return 0;
4811 out_overflow:
4812 print_overflow_msg(__func__, xdr);
4813 return -EIO;
4814 }
4815
4816 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4817 {
4818 __be32 *p;
4819 uint32_t delegation_type;
4820 int status;
4821
4822 p = xdr_inline_decode(xdr, 4);
4823 if (unlikely(!p))
4824 goto out_overflow;
4825 delegation_type = be32_to_cpup(p);
4826 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4827 res->delegation_type = 0;
4828 return 0;
4829 }
4830 status = decode_stateid(xdr, &res->delegation);
4831 if (unlikely(status))
4832 return status;
4833 p = xdr_inline_decode(xdr, 4);
4834 if (unlikely(!p))
4835 goto out_overflow;
4836 res->do_recall = be32_to_cpup(p);
4837
4838 switch (delegation_type) {
4839 case NFS4_OPEN_DELEGATE_READ:
4840 res->delegation_type = FMODE_READ;
4841 break;
4842 case NFS4_OPEN_DELEGATE_WRITE:
4843 res->delegation_type = FMODE_WRITE|FMODE_READ;
4844 if (decode_space_limit(xdr, &res->maxsize) < 0)
4845 return -EIO;
4846 }
4847 return decode_ace(xdr, NULL, res->server->nfs_client);
4848 out_overflow:
4849 print_overflow_msg(__func__, xdr);
4850 return -EIO;
4851 }
4852
4853 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4854 {
4855 __be32 *p;
4856 uint32_t savewords, bmlen, i;
4857 int status;
4858
4859 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
4860 return status;
4861 nfs_increment_open_seqid(status, res->seqid);
4862 if (status)
4863 return status;
4864 status = decode_stateid(xdr, &res->stateid);
4865 if (unlikely(status))
4866 return status;
4867
4868 decode_change_info(xdr, &res->cinfo);
4869
4870 p = xdr_inline_decode(xdr, 8);
4871 if (unlikely(!p))
4872 goto out_overflow;
4873 res->rflags = be32_to_cpup(p++);
4874 bmlen = be32_to_cpup(p);
4875 if (bmlen > 10)
4876 goto xdr_error;
4877
4878 p = xdr_inline_decode(xdr, bmlen << 2);
4879 if (unlikely(!p))
4880 goto out_overflow;
4881 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4882 for (i = 0; i < savewords; ++i)
4883 res->attrset[i] = be32_to_cpup(p++);
4884 for (; i < NFS4_BITMAP_SIZE; i++)
4885 res->attrset[i] = 0;
4886
4887 return decode_delegation(xdr, res);
4888 xdr_error:
4889 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4890 return -EIO;
4891 out_overflow:
4892 print_overflow_msg(__func__, xdr);
4893 return -EIO;
4894 }
4895
4896 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4897 {
4898 int status;
4899
4900 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4901 if (status != -EIO)
4902 nfs_increment_open_seqid(status, res->seqid);
4903 if (!status)
4904 status = decode_stateid(xdr, &res->stateid);
4905 return status;
4906 }
4907
4908 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4909 {
4910 int status;
4911
4912 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4913 if (status != -EIO)
4914 nfs_increment_open_seqid(status, res->seqid);
4915 if (!status)
4916 status = decode_stateid(xdr, &res->stateid);
4917 return status;
4918 }
4919
4920 static int decode_putfh(struct xdr_stream *xdr)
4921 {
4922 return decode_op_hdr(xdr, OP_PUTFH);
4923 }
4924
4925 static int decode_putrootfh(struct xdr_stream *xdr)
4926 {
4927 return decode_op_hdr(xdr, OP_PUTROOTFH);
4928 }
4929
4930 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4931 {
4932 __be32 *p;
4933 uint32_t count, eof, recvd;
4934 int status;
4935
4936 status = decode_op_hdr(xdr, OP_READ);
4937 if (status)
4938 return status;
4939 p = xdr_inline_decode(xdr, 8);
4940 if (unlikely(!p))
4941 goto out_overflow;
4942 eof = be32_to_cpup(p++);
4943 count = be32_to_cpup(p);
4944 recvd = xdr_read_pages(xdr, count);
4945 if (count > recvd) {
4946 dprintk("NFS: server cheating in read reply: "
4947 "count %u > recvd %u\n", count, recvd);
4948 count = recvd;
4949 eof = 0;
4950 }
4951 res->eof = eof;
4952 res->count = count;
4953 return 0;
4954 out_overflow:
4955 print_overflow_msg(__func__, xdr);
4956 return -EIO;
4957 }
4958
4959 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4960 {
4961 int status;
4962 __be32 verf[2];
4963
4964 status = decode_op_hdr(xdr, OP_READDIR);
4965 if (!status)
4966 status = decode_verifier(xdr, readdir->verifier.data);
4967 if (unlikely(status))
4968 return status;
4969 memcpy(verf, readdir->verifier.data, sizeof(verf));
4970 dprintk("%s: verifier = %08x:%08x\n",
4971 __func__, verf[0], verf[1]);
4972 return xdr_read_pages(xdr, xdr->buf->page_len);
4973 }
4974
4975 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4976 {
4977 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4978 u32 len, recvd;
4979 __be32 *p;
4980 int status;
4981
4982 status = decode_op_hdr(xdr, OP_READLINK);
4983 if (status)
4984 return status;
4985
4986 /* Convert length of symlink */
4987 p = xdr_inline_decode(xdr, 4);
4988 if (unlikely(!p))
4989 goto out_overflow;
4990 len = be32_to_cpup(p);
4991 if (len >= rcvbuf->page_len || len <= 0) {
4992 dprintk("nfs: server returned giant symlink!\n");
4993 return -ENAMETOOLONG;
4994 }
4995 recvd = xdr_read_pages(xdr, len);
4996 if (recvd < len) {
4997 dprintk("NFS: server cheating in readlink reply: "
4998 "count %u > recvd %u\n", len, recvd);
4999 return -EIO;
5000 }
5001 /*
5002 * The XDR encode routine has set things up so that
5003 * the link text will be copied directly into the
5004 * buffer. We just have to do overflow-checking,
5005 * and and null-terminate the text (the VFS expects
5006 * null-termination).
5007 */
5008 xdr_terminate_string(rcvbuf, len);
5009 return 0;
5010 out_overflow:
5011 print_overflow_msg(__func__, xdr);
5012 return -EIO;
5013 }
5014
5015 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5016 {
5017 int status;
5018
5019 status = decode_op_hdr(xdr, OP_REMOVE);
5020 if (status)
5021 goto out;
5022 status = decode_change_info(xdr, cinfo);
5023 out:
5024 return status;
5025 }
5026
5027 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5028 struct nfs4_change_info *new_cinfo)
5029 {
5030 int status;
5031
5032 status = decode_op_hdr(xdr, OP_RENAME);
5033 if (status)
5034 goto out;
5035 if ((status = decode_change_info(xdr, old_cinfo)))
5036 goto out;
5037 status = decode_change_info(xdr, new_cinfo);
5038 out:
5039 return status;
5040 }
5041
5042 static int decode_renew(struct xdr_stream *xdr)
5043 {
5044 return decode_op_hdr(xdr, OP_RENEW);
5045 }
5046
5047 static int
5048 decode_restorefh(struct xdr_stream *xdr)
5049 {
5050 return decode_op_hdr(xdr, OP_RESTOREFH);
5051 }
5052
5053 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5054 struct nfs_getaclres *res)
5055 {
5056 unsigned int savep;
5057 uint32_t attrlen,
5058 bitmap[3] = {0};
5059 int status;
5060 unsigned int pg_offset;
5061
5062 res->acl_len = 0;
5063 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5064 goto out;
5065
5066 xdr_enter_page(xdr, xdr->buf->page_len);
5067
5068 /* Calculate the offset of the page data */
5069 pg_offset = xdr->buf->head[0].iov_len;
5070
5071 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5072 goto out;
5073 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5074 goto out;
5075
5076 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5077 return -EIO;
5078 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5079
5080 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5081 * are stored with the acl data to handle the problem of
5082 * variable length bitmaps.*/
5083 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5084 res->acl_len = attrlen;
5085
5086 /* Check for receive buffer overflow */
5087 if (res->acl_len > (xdr->nwords << 2) ||
5088 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5089 res->acl_flags |= NFS4_ACL_TRUNC;
5090 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5091 attrlen, xdr->nwords << 2);
5092 }
5093 } else
5094 status = -EOPNOTSUPP;
5095
5096 out:
5097 return status;
5098 }
5099
5100 static int
5101 decode_savefh(struct xdr_stream *xdr)
5102 {
5103 return decode_op_hdr(xdr, OP_SAVEFH);
5104 }
5105
5106 static int decode_setattr(struct xdr_stream *xdr)
5107 {
5108 __be32 *p;
5109 uint32_t bmlen;
5110 int status;
5111
5112 status = decode_op_hdr(xdr, OP_SETATTR);
5113 if (status)
5114 return status;
5115 p = xdr_inline_decode(xdr, 4);
5116 if (unlikely(!p))
5117 goto out_overflow;
5118 bmlen = be32_to_cpup(p);
5119 p = xdr_inline_decode(xdr, bmlen << 2);
5120 if (likely(p))
5121 return 0;
5122 out_overflow:
5123 print_overflow_msg(__func__, xdr);
5124 return -EIO;
5125 }
5126
5127 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5128 {
5129 __be32 *p;
5130 uint32_t opnum;
5131 int32_t nfserr;
5132
5133 p = xdr_inline_decode(xdr, 8);
5134 if (unlikely(!p))
5135 goto out_overflow;
5136 opnum = be32_to_cpup(p++);
5137 if (opnum != OP_SETCLIENTID) {
5138 dprintk("nfs: decode_setclientid: Server returned operation"
5139 " %d\n", opnum);
5140 return -EIO;
5141 }
5142 nfserr = be32_to_cpup(p);
5143 if (nfserr == NFS_OK) {
5144 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5145 if (unlikely(!p))
5146 goto out_overflow;
5147 p = xdr_decode_hyper(p, &res->clientid);
5148 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5149 } else if (nfserr == NFSERR_CLID_INUSE) {
5150 uint32_t len;
5151
5152 /* skip netid string */
5153 p = xdr_inline_decode(xdr, 4);
5154 if (unlikely(!p))
5155 goto out_overflow;
5156 len = be32_to_cpup(p);
5157 p = xdr_inline_decode(xdr, len);
5158 if (unlikely(!p))
5159 goto out_overflow;
5160
5161 /* skip uaddr string */
5162 p = xdr_inline_decode(xdr, 4);
5163 if (unlikely(!p))
5164 goto out_overflow;
5165 len = be32_to_cpup(p);
5166 p = xdr_inline_decode(xdr, len);
5167 if (unlikely(!p))
5168 goto out_overflow;
5169 return -NFSERR_CLID_INUSE;
5170 } else
5171 return nfs4_stat_to_errno(nfserr);
5172
5173 return 0;
5174 out_overflow:
5175 print_overflow_msg(__func__, xdr);
5176 return -EIO;
5177 }
5178
5179 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5180 {
5181 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5182 }
5183
5184 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5185 {
5186 __be32 *p;
5187 int status;
5188
5189 status = decode_op_hdr(xdr, OP_WRITE);
5190 if (status)
5191 return status;
5192
5193 p = xdr_inline_decode(xdr, 8);
5194 if (unlikely(!p))
5195 goto out_overflow;
5196 res->count = be32_to_cpup(p++);
5197 res->verf->committed = be32_to_cpup(p++);
5198 return decode_write_verifier(xdr, &res->verf->verifier);
5199 out_overflow:
5200 print_overflow_msg(__func__, xdr);
5201 return -EIO;
5202 }
5203
5204 static int decode_delegreturn(struct xdr_stream *xdr)
5205 {
5206 return decode_op_hdr(xdr, OP_DELEGRETURN);
5207 }
5208
5209 static int decode_secinfo_gss(struct xdr_stream *xdr,
5210 struct nfs4_secinfo4 *flavor)
5211 {
5212 u32 oid_len;
5213 __be32 *p;
5214
5215 p = xdr_inline_decode(xdr, 4);
5216 if (unlikely(!p))
5217 goto out_overflow;
5218 oid_len = be32_to_cpup(p);
5219 if (oid_len > GSS_OID_MAX_LEN)
5220 goto out_err;
5221
5222 p = xdr_inline_decode(xdr, oid_len);
5223 if (unlikely(!p))
5224 goto out_overflow;
5225 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5226 flavor->flavor_info.oid.len = oid_len;
5227
5228 p = xdr_inline_decode(xdr, 8);
5229 if (unlikely(!p))
5230 goto out_overflow;
5231 flavor->flavor_info.qop = be32_to_cpup(p++);
5232 flavor->flavor_info.service = be32_to_cpup(p);
5233
5234 return 0;
5235
5236 out_overflow:
5237 print_overflow_msg(__func__, xdr);
5238 return -EIO;
5239 out_err:
5240 return -EINVAL;
5241 }
5242
5243 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5244 {
5245 struct nfs4_secinfo4 *sec_flavor;
5246 unsigned int i, num_flavors;
5247 int status;
5248 __be32 *p;
5249
5250 p = xdr_inline_decode(xdr, 4);
5251 if (unlikely(!p))
5252 goto out_overflow;
5253
5254 res->flavors->num_flavors = 0;
5255 num_flavors = be32_to_cpup(p);
5256
5257 for (i = 0; i < num_flavors; i++) {
5258 sec_flavor = &res->flavors->flavors[i];
5259 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5260 break;
5261
5262 p = xdr_inline_decode(xdr, 4);
5263 if (unlikely(!p))
5264 goto out_overflow;
5265 sec_flavor->flavor = be32_to_cpup(p);
5266
5267 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5268 status = decode_secinfo_gss(xdr, sec_flavor);
5269 if (status)
5270 goto out;
5271 }
5272 res->flavors->num_flavors++;
5273 }
5274
5275 status = 0;
5276 out:
5277 return status;
5278 out_overflow:
5279 print_overflow_msg(__func__, xdr);
5280 return -EIO;
5281 }
5282
5283 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5284 {
5285 int status = decode_op_hdr(xdr, OP_SECINFO);
5286 if (status)
5287 return status;
5288 return decode_secinfo_common(xdr, res);
5289 }
5290
5291 #if defined(CONFIG_NFS_V4_1)
5292 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5293 {
5294 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5295 if (status)
5296 return status;
5297 return decode_secinfo_common(xdr, res);
5298 }
5299
5300 static int decode_exchange_id(struct xdr_stream *xdr,
5301 struct nfs41_exchange_id_res *res)
5302 {
5303 __be32 *p;
5304 uint32_t dummy;
5305 char *dummy_str;
5306 int status;
5307 uint32_t impl_id_count;
5308
5309 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5310 if (status)
5311 return status;
5312
5313 p = xdr_inline_decode(xdr, 8);
5314 if (unlikely(!p))
5315 goto out_overflow;
5316 xdr_decode_hyper(p, &res->clientid);
5317 p = xdr_inline_decode(xdr, 12);
5318 if (unlikely(!p))
5319 goto out_overflow;
5320 res->seqid = be32_to_cpup(p++);
5321 res->flags = be32_to_cpup(p++);
5322
5323 /* We ask for SP4_NONE */
5324 dummy = be32_to_cpup(p);
5325 if (dummy != SP4_NONE)
5326 return -EIO;
5327
5328 /* server_owner4.so_minor_id */
5329 p = xdr_inline_decode(xdr, 8);
5330 if (unlikely(!p))
5331 goto out_overflow;
5332 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5333
5334 /* server_owner4.so_major_id */
5335 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5336 if (unlikely(status))
5337 return status;
5338 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5339 return -EIO;
5340 memcpy(res->server_owner->major_id, dummy_str, dummy);
5341 res->server_owner->major_id_sz = dummy;
5342
5343 /* server_scope4 */
5344 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5345 if (unlikely(status))
5346 return status;
5347 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5348 return -EIO;
5349 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5350 res->server_scope->server_scope_sz = dummy;
5351
5352 /* Implementation Id */
5353 p = xdr_inline_decode(xdr, 4);
5354 if (unlikely(!p))
5355 goto out_overflow;
5356 impl_id_count = be32_to_cpup(p++);
5357
5358 if (impl_id_count) {
5359 /* nii_domain */
5360 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5361 if (unlikely(status))
5362 return status;
5363 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5364 return -EIO;
5365 memcpy(res->impl_id->domain, dummy_str, dummy);
5366
5367 /* nii_name */
5368 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5369 if (unlikely(status))
5370 return status;
5371 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5372 return -EIO;
5373 memcpy(res->impl_id->name, dummy_str, dummy);
5374
5375 /* nii_date */
5376 p = xdr_inline_decode(xdr, 12);
5377 if (unlikely(!p))
5378 goto out_overflow;
5379 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5380 res->impl_id->date.nseconds = be32_to_cpup(p);
5381
5382 /* if there's more than one entry, ignore the rest */
5383 }
5384 return 0;
5385 out_overflow:
5386 print_overflow_msg(__func__, xdr);
5387 return -EIO;
5388 }
5389
5390 static int decode_chan_attrs(struct xdr_stream *xdr,
5391 struct nfs4_channel_attrs *attrs)
5392 {
5393 __be32 *p;
5394 u32 nr_attrs, val;
5395
5396 p = xdr_inline_decode(xdr, 28);
5397 if (unlikely(!p))
5398 goto out_overflow;
5399 val = be32_to_cpup(p++); /* headerpadsz */
5400 if (val)
5401 return -EINVAL; /* no support for header padding yet */
5402 attrs->max_rqst_sz = be32_to_cpup(p++);
5403 attrs->max_resp_sz = be32_to_cpup(p++);
5404 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5405 attrs->max_ops = be32_to_cpup(p++);
5406 attrs->max_reqs = be32_to_cpup(p++);
5407 nr_attrs = be32_to_cpup(p);
5408 if (unlikely(nr_attrs > 1)) {
5409 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5410 "count %u\n", __func__, nr_attrs);
5411 return -EINVAL;
5412 }
5413 if (nr_attrs == 1) {
5414 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5415 if (unlikely(!p))
5416 goto out_overflow;
5417 }
5418 return 0;
5419 out_overflow:
5420 print_overflow_msg(__func__, xdr);
5421 return -EIO;
5422 }
5423
5424 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5425 {
5426 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5427 }
5428
5429 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5430 struct nfs41_bind_conn_to_session_res *res)
5431 {
5432 __be32 *p;
5433 int status;
5434
5435 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5436 if (!status)
5437 status = decode_sessionid(xdr, &res->session->sess_id);
5438 if (unlikely(status))
5439 return status;
5440
5441 /* dir flags, rdma mode bool */
5442 p = xdr_inline_decode(xdr, 8);
5443 if (unlikely(!p))
5444 goto out_overflow;
5445
5446 res->dir = be32_to_cpup(p++);
5447 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5448 return -EIO;
5449 if (be32_to_cpup(p) == 0)
5450 res->use_conn_in_rdma_mode = false;
5451 else
5452 res->use_conn_in_rdma_mode = true;
5453
5454 return 0;
5455 out_overflow:
5456 print_overflow_msg(__func__, xdr);
5457 return -EIO;
5458 }
5459
5460 static int decode_create_session(struct xdr_stream *xdr,
5461 struct nfs41_create_session_res *res)
5462 {
5463 __be32 *p;
5464 int status;
5465 struct nfs_client *clp = res->client;
5466 struct nfs4_session *session = clp->cl_session;
5467
5468 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5469 if (!status)
5470 status = decode_sessionid(xdr, &session->sess_id);
5471 if (unlikely(status))
5472 return status;
5473
5474 /* seqid, flags */
5475 p = xdr_inline_decode(xdr, 8);
5476 if (unlikely(!p))
5477 goto out_overflow;
5478 clp->cl_seqid = be32_to_cpup(p++);
5479 session->flags = be32_to_cpup(p);
5480
5481 /* Channel attributes */
5482 status = decode_chan_attrs(xdr, &session->fc_attrs);
5483 if (!status)
5484 status = decode_chan_attrs(xdr, &session->bc_attrs);
5485 return status;
5486 out_overflow:
5487 print_overflow_msg(__func__, xdr);
5488 return -EIO;
5489 }
5490
5491 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5492 {
5493 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5494 }
5495
5496 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5497 {
5498 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5499 }
5500
5501 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5502 {
5503 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5504 }
5505 #endif /* CONFIG_NFS_V4_1 */
5506
5507 static int decode_sequence(struct xdr_stream *xdr,
5508 struct nfs4_sequence_res *res,
5509 struct rpc_rqst *rqstp)
5510 {
5511 #if defined(CONFIG_NFS_V4_1)
5512 struct nfs4_session *session;
5513 struct nfs4_sessionid id;
5514 u32 dummy;
5515 int status;
5516 __be32 *p;
5517
5518 if (res->sr_slot == NULL)
5519 return 0;
5520
5521 status = decode_op_hdr(xdr, OP_SEQUENCE);
5522 if (!status)
5523 status = decode_sessionid(xdr, &id);
5524 if (unlikely(status))
5525 goto out_err;
5526
5527 /*
5528 * If the server returns different values for sessionID, slotID or
5529 * sequence number, the server is looney tunes.
5530 */
5531 status = -EREMOTEIO;
5532 session = res->sr_slot->table->session;
5533
5534 if (memcmp(id.data, session->sess_id.data,
5535 NFS4_MAX_SESSIONID_LEN)) {
5536 dprintk("%s Invalid session id\n", __func__);
5537 goto out_err;
5538 }
5539
5540 p = xdr_inline_decode(xdr, 20);
5541 if (unlikely(!p))
5542 goto out_overflow;
5543
5544 /* seqid */
5545 dummy = be32_to_cpup(p++);
5546 if (dummy != res->sr_slot->seq_nr) {
5547 dprintk("%s Invalid sequence number\n", __func__);
5548 goto out_err;
5549 }
5550 /* slot id */
5551 dummy = be32_to_cpup(p++);
5552 if (dummy != res->sr_slot->slot_nr) {
5553 dprintk("%s Invalid slot id\n", __func__);
5554 goto out_err;
5555 }
5556 /* highest slot id */
5557 res->sr_highest_slotid = be32_to_cpup(p++);
5558 /* target highest slot id */
5559 res->sr_target_highest_slotid = be32_to_cpup(p++);
5560 /* result flags */
5561 res->sr_status_flags = be32_to_cpup(p);
5562 status = 0;
5563 out_err:
5564 res->sr_status = status;
5565 return status;
5566 out_overflow:
5567 print_overflow_msg(__func__, xdr);
5568 status = -EIO;
5569 goto out_err;
5570 #else /* CONFIG_NFS_V4_1 */
5571 return 0;
5572 #endif /* CONFIG_NFS_V4_1 */
5573 }
5574
5575 #if defined(CONFIG_NFS_V4_1)
5576 /*
5577 * TODO: Need to handle case when EOF != true;
5578 */
5579 static int decode_getdevicelist(struct xdr_stream *xdr,
5580 struct pnfs_devicelist *res)
5581 {
5582 __be32 *p;
5583 int status, i;
5584 nfs4_verifier verftemp;
5585
5586 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5587 if (status)
5588 return status;
5589
5590 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5591 if (unlikely(!p))
5592 goto out_overflow;
5593
5594 /* TODO: Skip cookie for now */
5595 p += 2;
5596
5597 /* Read verifier */
5598 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5599
5600 res->num_devs = be32_to_cpup(p);
5601
5602 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5603
5604 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5605 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5606 __func__, res->num_devs);
5607 return -EIO;
5608 }
5609
5610 p = xdr_inline_decode(xdr,
5611 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5612 if (unlikely(!p))
5613 goto out_overflow;
5614 for (i = 0; i < res->num_devs; i++)
5615 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5616 NFS4_DEVICEID4_SIZE);
5617 res->eof = be32_to_cpup(p);
5618 return 0;
5619 out_overflow:
5620 print_overflow_msg(__func__, xdr);
5621 return -EIO;
5622 }
5623
5624 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5625 struct pnfs_device *pdev)
5626 {
5627 __be32 *p;
5628 uint32_t len, type;
5629 int status;
5630
5631 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5632 if (status) {
5633 if (status == -ETOOSMALL) {
5634 p = xdr_inline_decode(xdr, 4);
5635 if (unlikely(!p))
5636 goto out_overflow;
5637 pdev->mincount = be32_to_cpup(p);
5638 dprintk("%s: Min count too small. mincnt = %u\n",
5639 __func__, pdev->mincount);
5640 }
5641 return status;
5642 }
5643
5644 p = xdr_inline_decode(xdr, 8);
5645 if (unlikely(!p))
5646 goto out_overflow;
5647 type = be32_to_cpup(p++);
5648 if (type != pdev->layout_type) {
5649 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5650 __func__, pdev->layout_type, type);
5651 return -EINVAL;
5652 }
5653 /*
5654 * Get the length of the opaque device_addr4. xdr_read_pages places
5655 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5656 * and places the remaining xdr data in xdr_buf->tail
5657 */
5658 pdev->mincount = be32_to_cpup(p);
5659 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5660 goto out_overflow;
5661
5662 /* Parse notification bitmap, verifying that it is zero. */
5663 p = xdr_inline_decode(xdr, 4);
5664 if (unlikely(!p))
5665 goto out_overflow;
5666 len = be32_to_cpup(p);
5667 if (len) {
5668 uint32_t i;
5669
5670 p = xdr_inline_decode(xdr, 4 * len);
5671 if (unlikely(!p))
5672 goto out_overflow;
5673 for (i = 0; i < len; i++, p++) {
5674 if (be32_to_cpup(p)) {
5675 dprintk("%s: notifications not supported\n",
5676 __func__);
5677 return -EIO;
5678 }
5679 }
5680 }
5681 return 0;
5682 out_overflow:
5683 print_overflow_msg(__func__, xdr);
5684 return -EIO;
5685 }
5686
5687 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5688 struct nfs4_layoutget_res *res)
5689 {
5690 __be32 *p;
5691 int status;
5692 u32 layout_count;
5693 u32 recvd;
5694
5695 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5696 if (status)
5697 return status;
5698 p = xdr_inline_decode(xdr, 4);
5699 if (unlikely(!p))
5700 goto out_overflow;
5701 res->return_on_close = be32_to_cpup(p);
5702 decode_stateid(xdr, &res->stateid);
5703 p = xdr_inline_decode(xdr, 4);
5704 if (unlikely(!p))
5705 goto out_overflow;
5706 layout_count = be32_to_cpup(p);
5707 if (!layout_count) {
5708 dprintk("%s: server responded with empty layout array\n",
5709 __func__);
5710 return -EINVAL;
5711 }
5712
5713 p = xdr_inline_decode(xdr, 28);
5714 if (unlikely(!p))
5715 goto out_overflow;
5716 p = xdr_decode_hyper(p, &res->range.offset);
5717 p = xdr_decode_hyper(p, &res->range.length);
5718 res->range.iomode = be32_to_cpup(p++);
5719 res->type = be32_to_cpup(p++);
5720 res->layoutp->len = be32_to_cpup(p);
5721
5722 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5723 __func__,
5724 (unsigned long)res->range.offset,
5725 (unsigned long)res->range.length,
5726 res->range.iomode,
5727 res->type,
5728 res->layoutp->len);
5729
5730 recvd = xdr_read_pages(xdr, res->layoutp->len);
5731 if (res->layoutp->len > recvd) {
5732 dprintk("NFS: server cheating in layoutget reply: "
5733 "layout len %u > recvd %u\n",
5734 res->layoutp->len, recvd);
5735 return -EINVAL;
5736 }
5737
5738 if (layout_count > 1) {
5739 /* We only handle a length one array at the moment. Any
5740 * further entries are just ignored. Note that this means
5741 * the client may see a response that is less than the
5742 * minimum it requested.
5743 */
5744 dprintk("%s: server responded with %d layouts, dropping tail\n",
5745 __func__, layout_count);
5746 }
5747
5748 return 0;
5749 out_overflow:
5750 print_overflow_msg(__func__, xdr);
5751 return -EIO;
5752 }
5753
5754 static int decode_layoutreturn(struct xdr_stream *xdr,
5755 struct nfs4_layoutreturn_res *res)
5756 {
5757 __be32 *p;
5758 int status;
5759
5760 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5761 if (status)
5762 return status;
5763 p = xdr_inline_decode(xdr, 4);
5764 if (unlikely(!p))
5765 goto out_overflow;
5766 res->lrs_present = be32_to_cpup(p);
5767 if (res->lrs_present)
5768 status = decode_stateid(xdr, &res->stateid);
5769 return status;
5770 out_overflow:
5771 print_overflow_msg(__func__, xdr);
5772 return -EIO;
5773 }
5774
5775 static int decode_layoutcommit(struct xdr_stream *xdr,
5776 struct rpc_rqst *req,
5777 struct nfs4_layoutcommit_res *res)
5778 {
5779 __be32 *p;
5780 __u32 sizechanged;
5781 int status;
5782
5783 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5784 res->status = status;
5785 if (status)
5786 return status;
5787
5788 p = xdr_inline_decode(xdr, 4);
5789 if (unlikely(!p))
5790 goto out_overflow;
5791 sizechanged = be32_to_cpup(p);
5792
5793 if (sizechanged) {
5794 /* throw away new size */
5795 p = xdr_inline_decode(xdr, 8);
5796 if (unlikely(!p))
5797 goto out_overflow;
5798 }
5799 return 0;
5800 out_overflow:
5801 print_overflow_msg(__func__, xdr);
5802 return -EIO;
5803 }
5804
5805 static int decode_test_stateid(struct xdr_stream *xdr,
5806 struct nfs41_test_stateid_res *res)
5807 {
5808 __be32 *p;
5809 int status;
5810 int num_res;
5811
5812 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5813 if (status)
5814 return status;
5815
5816 p = xdr_inline_decode(xdr, 4);
5817 if (unlikely(!p))
5818 goto out_overflow;
5819 num_res = be32_to_cpup(p++);
5820 if (num_res != 1)
5821 goto out;
5822
5823 p = xdr_inline_decode(xdr, 4);
5824 if (unlikely(!p))
5825 goto out_overflow;
5826 res->status = be32_to_cpup(p++);
5827
5828 return status;
5829 out_overflow:
5830 print_overflow_msg(__func__, xdr);
5831 out:
5832 return -EIO;
5833 }
5834
5835 static int decode_free_stateid(struct xdr_stream *xdr,
5836 struct nfs41_free_stateid_res *res)
5837 {
5838 __be32 *p;
5839 int status;
5840
5841 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5842 if (status)
5843 return status;
5844
5845 p = xdr_inline_decode(xdr, 4);
5846 if (unlikely(!p))
5847 goto out_overflow;
5848 res->status = be32_to_cpup(p++);
5849 return res->status;
5850 out_overflow:
5851 print_overflow_msg(__func__, xdr);
5852 return -EIO;
5853 }
5854 #endif /* CONFIG_NFS_V4_1 */
5855
5856 /*
5857 * END OF "GENERIC" DECODE ROUTINES.
5858 */
5859
5860 /*
5861 * Decode OPEN_DOWNGRADE response
5862 */
5863 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5864 struct xdr_stream *xdr,
5865 struct nfs_closeres *res)
5866 {
5867 struct compound_hdr hdr;
5868 int status;
5869
5870 status = decode_compound_hdr(xdr, &hdr);
5871 if (status)
5872 goto out;
5873 status = decode_sequence(xdr, &res->seq_res, rqstp);
5874 if (status)
5875 goto out;
5876 status = decode_putfh(xdr);
5877 if (status)
5878 goto out;
5879 status = decode_open_downgrade(xdr, res);
5880 if (status != 0)
5881 goto out;
5882 decode_getfattr(xdr, res->fattr, res->server);
5883 out:
5884 return status;
5885 }
5886
5887 /*
5888 * Decode ACCESS response
5889 */
5890 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5891 struct nfs4_accessres *res)
5892 {
5893 struct compound_hdr hdr;
5894 int status;
5895
5896 status = decode_compound_hdr(xdr, &hdr);
5897 if (status)
5898 goto out;
5899 status = decode_sequence(xdr, &res->seq_res, rqstp);
5900 if (status)
5901 goto out;
5902 status = decode_putfh(xdr);
5903 if (status != 0)
5904 goto out;
5905 status = decode_access(xdr, &res->supported, &res->access);
5906 if (status != 0)
5907 goto out;
5908 decode_getfattr(xdr, res->fattr, res->server);
5909 out:
5910 return status;
5911 }
5912
5913 /*
5914 * Decode LOOKUP response
5915 */
5916 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5917 struct nfs4_lookup_res *res)
5918 {
5919 struct compound_hdr hdr;
5920 int status;
5921
5922 status = decode_compound_hdr(xdr, &hdr);
5923 if (status)
5924 goto out;
5925 status = decode_sequence(xdr, &res->seq_res, rqstp);
5926 if (status)
5927 goto out;
5928 status = decode_putfh(xdr);
5929 if (status)
5930 goto out;
5931 status = decode_lookup(xdr);
5932 if (status)
5933 goto out;
5934 status = decode_getfh(xdr, res->fh);
5935 if (status)
5936 goto out;
5937 status = decode_getfattr(xdr, res->fattr, res->server);
5938 out:
5939 return status;
5940 }
5941
5942 /*
5943 * Decode LOOKUP_ROOT response
5944 */
5945 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5946 struct xdr_stream *xdr,
5947 struct nfs4_lookup_res *res)
5948 {
5949 struct compound_hdr hdr;
5950 int status;
5951
5952 status = decode_compound_hdr(xdr, &hdr);
5953 if (status)
5954 goto out;
5955 status = decode_sequence(xdr, &res->seq_res, rqstp);
5956 if (status)
5957 goto out;
5958 status = decode_putrootfh(xdr);
5959 if (status)
5960 goto out;
5961 status = decode_getfh(xdr, res->fh);
5962 if (status == 0)
5963 status = decode_getfattr(xdr, res->fattr, res->server);
5964 out:
5965 return status;
5966 }
5967
5968 /*
5969 * Decode REMOVE response
5970 */
5971 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5972 struct nfs_removeres *res)
5973 {
5974 struct compound_hdr hdr;
5975 int status;
5976
5977 status = decode_compound_hdr(xdr, &hdr);
5978 if (status)
5979 goto out;
5980 status = decode_sequence(xdr, &res->seq_res, rqstp);
5981 if (status)
5982 goto out;
5983 status = decode_putfh(xdr);
5984 if (status)
5985 goto out;
5986 status = decode_remove(xdr, &res->cinfo);
5987 out:
5988 return status;
5989 }
5990
5991 /*
5992 * Decode RENAME response
5993 */
5994 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5995 struct nfs_renameres *res)
5996 {
5997 struct compound_hdr hdr;
5998 int status;
5999
6000 status = decode_compound_hdr(xdr, &hdr);
6001 if (status)
6002 goto out;
6003 status = decode_sequence(xdr, &res->seq_res, rqstp);
6004 if (status)
6005 goto out;
6006 status = decode_putfh(xdr);
6007 if (status)
6008 goto out;
6009 status = decode_savefh(xdr);
6010 if (status)
6011 goto out;
6012 status = decode_putfh(xdr);
6013 if (status)
6014 goto out;
6015 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6016 out:
6017 return status;
6018 }
6019
6020 /*
6021 * Decode LINK response
6022 */
6023 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6024 struct nfs4_link_res *res)
6025 {
6026 struct compound_hdr hdr;
6027 int status;
6028
6029 status = decode_compound_hdr(xdr, &hdr);
6030 if (status)
6031 goto out;
6032 status = decode_sequence(xdr, &res->seq_res, rqstp);
6033 if (status)
6034 goto out;
6035 status = decode_putfh(xdr);
6036 if (status)
6037 goto out;
6038 status = decode_savefh(xdr);
6039 if (status)
6040 goto out;
6041 status = decode_putfh(xdr);
6042 if (status)
6043 goto out;
6044 status = decode_link(xdr, &res->cinfo);
6045 if (status)
6046 goto out;
6047 /*
6048 * Note order: OP_LINK leaves the directory as the current
6049 * filehandle.
6050 */
6051 status = decode_restorefh(xdr);
6052 if (status)
6053 goto out;
6054 decode_getfattr(xdr, res->fattr, res->server);
6055 out:
6056 return status;
6057 }
6058
6059 /*
6060 * Decode CREATE response
6061 */
6062 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6063 struct nfs4_create_res *res)
6064 {
6065 struct compound_hdr hdr;
6066 int status;
6067
6068 status = decode_compound_hdr(xdr, &hdr);
6069 if (status)
6070 goto out;
6071 status = decode_sequence(xdr, &res->seq_res, rqstp);
6072 if (status)
6073 goto out;
6074 status = decode_putfh(xdr);
6075 if (status)
6076 goto out;
6077 status = decode_create(xdr, &res->dir_cinfo);
6078 if (status)
6079 goto out;
6080 status = decode_getfh(xdr, res->fh);
6081 if (status)
6082 goto out;
6083 decode_getfattr(xdr, res->fattr, res->server);
6084 out:
6085 return status;
6086 }
6087
6088 /*
6089 * Decode SYMLINK response
6090 */
6091 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6092 struct nfs4_create_res *res)
6093 {
6094 return nfs4_xdr_dec_create(rqstp, xdr, res);
6095 }
6096
6097 /*
6098 * Decode GETATTR response
6099 */
6100 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6101 struct nfs4_getattr_res *res)
6102 {
6103 struct compound_hdr hdr;
6104 int status;
6105
6106 status = decode_compound_hdr(xdr, &hdr);
6107 if (status)
6108 goto out;
6109 status = decode_sequence(xdr, &res->seq_res, rqstp);
6110 if (status)
6111 goto out;
6112 status = decode_putfh(xdr);
6113 if (status)
6114 goto out;
6115 status = decode_getfattr(xdr, res->fattr, res->server);
6116 out:
6117 return status;
6118 }
6119
6120 /*
6121 * Encode an SETACL request
6122 */
6123 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6124 struct nfs_setaclargs *args)
6125 {
6126 struct compound_hdr hdr = {
6127 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6128 };
6129
6130 encode_compound_hdr(xdr, req, &hdr);
6131 encode_sequence(xdr, &args->seq_args, &hdr);
6132 encode_putfh(xdr, args->fh, &hdr);
6133 encode_setacl(xdr, args, &hdr);
6134 encode_nops(&hdr);
6135 }
6136
6137 /*
6138 * Decode SETACL response
6139 */
6140 static int
6141 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6142 struct nfs_setaclres *res)
6143 {
6144 struct compound_hdr hdr;
6145 int status;
6146
6147 status = decode_compound_hdr(xdr, &hdr);
6148 if (status)
6149 goto out;
6150 status = decode_sequence(xdr, &res->seq_res, rqstp);
6151 if (status)
6152 goto out;
6153 status = decode_putfh(xdr);
6154 if (status)
6155 goto out;
6156 status = decode_setattr(xdr);
6157 out:
6158 return status;
6159 }
6160
6161 /*
6162 * Decode GETACL response
6163 */
6164 static int
6165 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6166 struct nfs_getaclres *res)
6167 {
6168 struct compound_hdr hdr;
6169 int status;
6170
6171 if (res->acl_scratch != NULL) {
6172 void *p = page_address(res->acl_scratch);
6173 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6174 }
6175 status = decode_compound_hdr(xdr, &hdr);
6176 if (status)
6177 goto out;
6178 status = decode_sequence(xdr, &res->seq_res, rqstp);
6179 if (status)
6180 goto out;
6181 status = decode_putfh(xdr);
6182 if (status)
6183 goto out;
6184 status = decode_getacl(xdr, rqstp, res);
6185
6186 out:
6187 return status;
6188 }
6189
6190 /*
6191 * Decode CLOSE response
6192 */
6193 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6194 struct nfs_closeres *res)
6195 {
6196 struct compound_hdr hdr;
6197 int status;
6198
6199 status = decode_compound_hdr(xdr, &hdr);
6200 if (status)
6201 goto out;
6202 status = decode_sequence(xdr, &res->seq_res, rqstp);
6203 if (status)
6204 goto out;
6205 status = decode_putfh(xdr);
6206 if (status)
6207 goto out;
6208 status = decode_close(xdr, res);
6209 if (status != 0)
6210 goto out;
6211 /*
6212 * Note: Server may do delete on close for this file
6213 * in which case the getattr call will fail with
6214 * an ESTALE error. Shouldn't be a problem,
6215 * though, since fattr->valid will remain unset.
6216 */
6217 decode_getfattr(xdr, res->fattr, res->server);
6218 out:
6219 return status;
6220 }
6221
6222 /*
6223 * Decode OPEN response
6224 */
6225 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6226 struct nfs_openres *res)
6227 {
6228 struct compound_hdr hdr;
6229 int status;
6230
6231 status = decode_compound_hdr(xdr, &hdr);
6232 if (status)
6233 goto out;
6234 status = decode_sequence(xdr, &res->seq_res, rqstp);
6235 if (status)
6236 goto out;
6237 status = decode_putfh(xdr);
6238 if (status)
6239 goto out;
6240 status = decode_open(xdr, res);
6241 if (status)
6242 goto out;
6243 status = decode_getfh(xdr, &res->fh);
6244 if (status)
6245 goto out;
6246 if (res->access_request)
6247 decode_access(xdr, &res->access_supported, &res->access_result);
6248 decode_getfattr(xdr, res->f_attr, res->server);
6249 out:
6250 return status;
6251 }
6252
6253 /*
6254 * Decode OPEN_CONFIRM response
6255 */
6256 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6257 struct xdr_stream *xdr,
6258 struct nfs_open_confirmres *res)
6259 {
6260 struct compound_hdr hdr;
6261 int status;
6262
6263 status = decode_compound_hdr(xdr, &hdr);
6264 if (status)
6265 goto out;
6266 status = decode_putfh(xdr);
6267 if (status)
6268 goto out;
6269 status = decode_open_confirm(xdr, res);
6270 out:
6271 return status;
6272 }
6273
6274 /*
6275 * Decode OPEN response
6276 */
6277 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6278 struct xdr_stream *xdr,
6279 struct nfs_openres *res)
6280 {
6281 struct compound_hdr hdr;
6282 int status;
6283
6284 status = decode_compound_hdr(xdr, &hdr);
6285 if (status)
6286 goto out;
6287 status = decode_sequence(xdr, &res->seq_res, rqstp);
6288 if (status)
6289 goto out;
6290 status = decode_putfh(xdr);
6291 if (status)
6292 goto out;
6293 status = decode_open(xdr, res);
6294 if (status)
6295 goto out;
6296 if (res->access_request)
6297 decode_access(xdr, &res->access_supported, &res->access_result);
6298 decode_getfattr(xdr, res->f_attr, res->server);
6299 out:
6300 return status;
6301 }
6302
6303 /*
6304 * Decode SETATTR response
6305 */
6306 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6307 struct xdr_stream *xdr,
6308 struct nfs_setattrres *res)
6309 {
6310 struct compound_hdr hdr;
6311 int status;
6312
6313 status = decode_compound_hdr(xdr, &hdr);
6314 if (status)
6315 goto out;
6316 status = decode_sequence(xdr, &res->seq_res, rqstp);
6317 if (status)
6318 goto out;
6319 status = decode_putfh(xdr);
6320 if (status)
6321 goto out;
6322 status = decode_setattr(xdr);
6323 if (status)
6324 goto out;
6325 decode_getfattr(xdr, res->fattr, res->server);
6326 out:
6327 return status;
6328 }
6329
6330 /*
6331 * Decode LOCK response
6332 */
6333 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6334 struct nfs_lock_res *res)
6335 {
6336 struct compound_hdr hdr;
6337 int status;
6338
6339 status = decode_compound_hdr(xdr, &hdr);
6340 if (status)
6341 goto out;
6342 status = decode_sequence(xdr, &res->seq_res, rqstp);
6343 if (status)
6344 goto out;
6345 status = decode_putfh(xdr);
6346 if (status)
6347 goto out;
6348 status = decode_lock(xdr, res);
6349 out:
6350 return status;
6351 }
6352
6353 /*
6354 * Decode LOCKT response
6355 */
6356 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6357 struct nfs_lockt_res *res)
6358 {
6359 struct compound_hdr hdr;
6360 int status;
6361
6362 status = decode_compound_hdr(xdr, &hdr);
6363 if (status)
6364 goto out;
6365 status = decode_sequence(xdr, &res->seq_res, rqstp);
6366 if (status)
6367 goto out;
6368 status = decode_putfh(xdr);
6369 if (status)
6370 goto out;
6371 status = decode_lockt(xdr, res);
6372 out:
6373 return status;
6374 }
6375
6376 /*
6377 * Decode LOCKU response
6378 */
6379 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6380 struct nfs_locku_res *res)
6381 {
6382 struct compound_hdr hdr;
6383 int status;
6384
6385 status = decode_compound_hdr(xdr, &hdr);
6386 if (status)
6387 goto out;
6388 status = decode_sequence(xdr, &res->seq_res, rqstp);
6389 if (status)
6390 goto out;
6391 status = decode_putfh(xdr);
6392 if (status)
6393 goto out;
6394 status = decode_locku(xdr, res);
6395 out:
6396 return status;
6397 }
6398
6399 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6400 struct xdr_stream *xdr, void *dummy)
6401 {
6402 struct compound_hdr hdr;
6403 int status;
6404
6405 status = decode_compound_hdr(xdr, &hdr);
6406 if (!status)
6407 status = decode_release_lockowner(xdr);
6408 return status;
6409 }
6410
6411 /*
6412 * Decode READLINK response
6413 */
6414 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6415 struct xdr_stream *xdr,
6416 struct nfs4_readlink_res *res)
6417 {
6418 struct compound_hdr hdr;
6419 int status;
6420
6421 status = decode_compound_hdr(xdr, &hdr);
6422 if (status)
6423 goto out;
6424 status = decode_sequence(xdr, &res->seq_res, rqstp);
6425 if (status)
6426 goto out;
6427 status = decode_putfh(xdr);
6428 if (status)
6429 goto out;
6430 status = decode_readlink(xdr, rqstp);
6431 out:
6432 return status;
6433 }
6434
6435 /*
6436 * Decode READDIR response
6437 */
6438 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6439 struct nfs4_readdir_res *res)
6440 {
6441 struct compound_hdr hdr;
6442 int status;
6443
6444 status = decode_compound_hdr(xdr, &hdr);
6445 if (status)
6446 goto out;
6447 status = decode_sequence(xdr, &res->seq_res, rqstp);
6448 if (status)
6449 goto out;
6450 status = decode_putfh(xdr);
6451 if (status)
6452 goto out;
6453 status = decode_readdir(xdr, rqstp, res);
6454 out:
6455 return status;
6456 }
6457
6458 /*
6459 * Decode Read response
6460 */
6461 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6462 struct nfs_readres *res)
6463 {
6464 struct compound_hdr hdr;
6465 int status;
6466
6467 status = decode_compound_hdr(xdr, &hdr);
6468 if (status)
6469 goto out;
6470 status = decode_sequence(xdr, &res->seq_res, rqstp);
6471 if (status)
6472 goto out;
6473 status = decode_putfh(xdr);
6474 if (status)
6475 goto out;
6476 status = decode_read(xdr, rqstp, res);
6477 if (!status)
6478 status = res->count;
6479 out:
6480 return status;
6481 }
6482
6483 /*
6484 * Decode WRITE response
6485 */
6486 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6487 struct nfs_writeres *res)
6488 {
6489 struct compound_hdr hdr;
6490 int status;
6491
6492 status = decode_compound_hdr(xdr, &hdr);
6493 if (status)
6494 goto out;
6495 status = decode_sequence(xdr, &res->seq_res, rqstp);
6496 if (status)
6497 goto out;
6498 status = decode_putfh(xdr);
6499 if (status)
6500 goto out;
6501 status = decode_write(xdr, res);
6502 if (status)
6503 goto out;
6504 if (res->fattr)
6505 decode_getfattr(xdr, res->fattr, res->server);
6506 if (!status)
6507 status = res->count;
6508 out:
6509 return status;
6510 }
6511
6512 /*
6513 * Decode COMMIT response
6514 */
6515 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6516 struct nfs_commitres *res)
6517 {
6518 struct compound_hdr hdr;
6519 int status;
6520
6521 status = decode_compound_hdr(xdr, &hdr);
6522 if (status)
6523 goto out;
6524 status = decode_sequence(xdr, &res->seq_res, rqstp);
6525 if (status)
6526 goto out;
6527 status = decode_putfh(xdr);
6528 if (status)
6529 goto out;
6530 status = decode_commit(xdr, res);
6531 out:
6532 return status;
6533 }
6534
6535 /*
6536 * Decode FSINFO response
6537 */
6538 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6539 struct nfs4_fsinfo_res *res)
6540 {
6541 struct compound_hdr hdr;
6542 int status;
6543
6544 status = decode_compound_hdr(xdr, &hdr);
6545 if (!status)
6546 status = decode_sequence(xdr, &res->seq_res, req);
6547 if (!status)
6548 status = decode_putfh(xdr);
6549 if (!status)
6550 status = decode_fsinfo(xdr, res->fsinfo);
6551 return status;
6552 }
6553
6554 /*
6555 * Decode PATHCONF response
6556 */
6557 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6558 struct nfs4_pathconf_res *res)
6559 {
6560 struct compound_hdr hdr;
6561 int status;
6562
6563 status = decode_compound_hdr(xdr, &hdr);
6564 if (!status)
6565 status = decode_sequence(xdr, &res->seq_res, req);
6566 if (!status)
6567 status = decode_putfh(xdr);
6568 if (!status)
6569 status = decode_pathconf(xdr, res->pathconf);
6570 return status;
6571 }
6572
6573 /*
6574 * Decode STATFS response
6575 */
6576 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6577 struct nfs4_statfs_res *res)
6578 {
6579 struct compound_hdr hdr;
6580 int status;
6581
6582 status = decode_compound_hdr(xdr, &hdr);
6583 if (!status)
6584 status = decode_sequence(xdr, &res->seq_res, req);
6585 if (!status)
6586 status = decode_putfh(xdr);
6587 if (!status)
6588 status = decode_statfs(xdr, res->fsstat);
6589 return status;
6590 }
6591
6592 /*
6593 * Decode GETATTR_BITMAP response
6594 */
6595 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6596 struct xdr_stream *xdr,
6597 struct nfs4_server_caps_res *res)
6598 {
6599 struct compound_hdr hdr;
6600 int status;
6601
6602 status = decode_compound_hdr(xdr, &hdr);
6603 if (status)
6604 goto out;
6605 status = decode_sequence(xdr, &res->seq_res, req);
6606 if (status)
6607 goto out;
6608 status = decode_putfh(xdr);
6609 if (status)
6610 goto out;
6611 status = decode_server_caps(xdr, res);
6612 out:
6613 return status;
6614 }
6615
6616 /*
6617 * Decode RENEW response
6618 */
6619 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6620 void *__unused)
6621 {
6622 struct compound_hdr hdr;
6623 int status;
6624
6625 status = decode_compound_hdr(xdr, &hdr);
6626 if (!status)
6627 status = decode_renew(xdr);
6628 return status;
6629 }
6630
6631 /*
6632 * Decode SETCLIENTID response
6633 */
6634 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6635 struct xdr_stream *xdr,
6636 struct nfs4_setclientid_res *res)
6637 {
6638 struct compound_hdr hdr;
6639 int status;
6640
6641 status = decode_compound_hdr(xdr, &hdr);
6642 if (!status)
6643 status = decode_setclientid(xdr, res);
6644 return status;
6645 }
6646
6647 /*
6648 * Decode SETCLIENTID_CONFIRM response
6649 */
6650 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6651 struct xdr_stream *xdr)
6652 {
6653 struct compound_hdr hdr;
6654 int status;
6655
6656 status = decode_compound_hdr(xdr, &hdr);
6657 if (!status)
6658 status = decode_setclientid_confirm(xdr);
6659 return status;
6660 }
6661
6662 /*
6663 * Decode DELEGRETURN response
6664 */
6665 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6666 struct xdr_stream *xdr,
6667 struct nfs4_delegreturnres *res)
6668 {
6669 struct compound_hdr hdr;
6670 int status;
6671
6672 status = decode_compound_hdr(xdr, &hdr);
6673 if (status)
6674 goto out;
6675 status = decode_sequence(xdr, &res->seq_res, rqstp);
6676 if (status)
6677 goto out;
6678 status = decode_putfh(xdr);
6679 if (status != 0)
6680 goto out;
6681 status = decode_getfattr(xdr, res->fattr, res->server);
6682 if (status != 0)
6683 goto out;
6684 status = decode_delegreturn(xdr);
6685 out:
6686 return status;
6687 }
6688
6689 /*
6690 * Decode FS_LOCATIONS response
6691 */
6692 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6693 struct xdr_stream *xdr,
6694 struct nfs4_fs_locations_res *res)
6695 {
6696 struct compound_hdr hdr;
6697 int status;
6698
6699 status = decode_compound_hdr(xdr, &hdr);
6700 if (status)
6701 goto out;
6702 status = decode_sequence(xdr, &res->seq_res, req);
6703 if (status)
6704 goto out;
6705 status = decode_putfh(xdr);
6706 if (status)
6707 goto out;
6708 status = decode_lookup(xdr);
6709 if (status)
6710 goto out;
6711 xdr_enter_page(xdr, PAGE_SIZE);
6712 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6713 NULL, res->fs_locations,
6714 res->fs_locations->server);
6715 out:
6716 return status;
6717 }
6718
6719 /*
6720 * Decode SECINFO response
6721 */
6722 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6723 struct xdr_stream *xdr,
6724 struct nfs4_secinfo_res *res)
6725 {
6726 struct compound_hdr hdr;
6727 int status;
6728
6729 status = decode_compound_hdr(xdr, &hdr);
6730 if (status)
6731 goto out;
6732 status = decode_sequence(xdr, &res->seq_res, rqstp);
6733 if (status)
6734 goto out;
6735 status = decode_putfh(xdr);
6736 if (status)
6737 goto out;
6738 status = decode_secinfo(xdr, res);
6739 out:
6740 return status;
6741 }
6742
6743 #if defined(CONFIG_NFS_V4_1)
6744 /*
6745 * Decode BIND_CONN_TO_SESSION response
6746 */
6747 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6748 struct xdr_stream *xdr,
6749 void *res)
6750 {
6751 struct compound_hdr hdr;
6752 int status;
6753
6754 status = decode_compound_hdr(xdr, &hdr);
6755 if (!status)
6756 status = decode_bind_conn_to_session(xdr, res);
6757 return status;
6758 }
6759
6760 /*
6761 * Decode EXCHANGE_ID response
6762 */
6763 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6764 struct xdr_stream *xdr,
6765 void *res)
6766 {
6767 struct compound_hdr hdr;
6768 int status;
6769
6770 status = decode_compound_hdr(xdr, &hdr);
6771 if (!status)
6772 status = decode_exchange_id(xdr, res);
6773 return status;
6774 }
6775
6776 /*
6777 * Decode CREATE_SESSION response
6778 */
6779 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6780 struct xdr_stream *xdr,
6781 struct nfs41_create_session_res *res)
6782 {
6783 struct compound_hdr hdr;
6784 int status;
6785
6786 status = decode_compound_hdr(xdr, &hdr);
6787 if (!status)
6788 status = decode_create_session(xdr, res);
6789 return status;
6790 }
6791
6792 /*
6793 * Decode DESTROY_SESSION response
6794 */
6795 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6796 struct xdr_stream *xdr,
6797 void *res)
6798 {
6799 struct compound_hdr hdr;
6800 int status;
6801
6802 status = decode_compound_hdr(xdr, &hdr);
6803 if (!status)
6804 status = decode_destroy_session(xdr, res);
6805 return status;
6806 }
6807
6808 /*
6809 * Decode DESTROY_CLIENTID response
6810 */
6811 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6812 struct xdr_stream *xdr,
6813 void *res)
6814 {
6815 struct compound_hdr hdr;
6816 int status;
6817
6818 status = decode_compound_hdr(xdr, &hdr);
6819 if (!status)
6820 status = decode_destroy_clientid(xdr, res);
6821 return status;
6822 }
6823
6824 /*
6825 * Decode SEQUENCE response
6826 */
6827 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6828 struct xdr_stream *xdr,
6829 struct nfs4_sequence_res *res)
6830 {
6831 struct compound_hdr hdr;
6832 int status;
6833
6834 status = decode_compound_hdr(xdr, &hdr);
6835 if (!status)
6836 status = decode_sequence(xdr, res, rqstp);
6837 return status;
6838 }
6839
6840 /*
6841 * Decode GET_LEASE_TIME response
6842 */
6843 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6844 struct xdr_stream *xdr,
6845 struct nfs4_get_lease_time_res *res)
6846 {
6847 struct compound_hdr hdr;
6848 int status;
6849
6850 status = decode_compound_hdr(xdr, &hdr);
6851 if (!status)
6852 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6853 if (!status)
6854 status = decode_putrootfh(xdr);
6855 if (!status)
6856 status = decode_fsinfo(xdr, res->lr_fsinfo);
6857 return status;
6858 }
6859
6860 /*
6861 * Decode RECLAIM_COMPLETE response
6862 */
6863 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6864 struct xdr_stream *xdr,
6865 struct nfs41_reclaim_complete_res *res)
6866 {
6867 struct compound_hdr hdr;
6868 int status;
6869
6870 status = decode_compound_hdr(xdr, &hdr);
6871 if (!status)
6872 status = decode_sequence(xdr, &res->seq_res, rqstp);
6873 if (!status)
6874 status = decode_reclaim_complete(xdr, (void *)NULL);
6875 return status;
6876 }
6877
6878 /*
6879 * Decode GETDEVICELIST response
6880 */
6881 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6882 struct xdr_stream *xdr,
6883 struct nfs4_getdevicelist_res *res)
6884 {
6885 struct compound_hdr hdr;
6886 int status;
6887
6888 dprintk("encoding getdevicelist!\n");
6889
6890 status = decode_compound_hdr(xdr, &hdr);
6891 if (status != 0)
6892 goto out;
6893 status = decode_sequence(xdr, &res->seq_res, rqstp);
6894 if (status != 0)
6895 goto out;
6896 status = decode_putfh(xdr);
6897 if (status != 0)
6898 goto out;
6899 status = decode_getdevicelist(xdr, res->devlist);
6900 out:
6901 return status;
6902 }
6903
6904 /*
6905 * Decode GETDEVINFO response
6906 */
6907 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6908 struct xdr_stream *xdr,
6909 struct nfs4_getdeviceinfo_res *res)
6910 {
6911 struct compound_hdr hdr;
6912 int status;
6913
6914 status = decode_compound_hdr(xdr, &hdr);
6915 if (status != 0)
6916 goto out;
6917 status = decode_sequence(xdr, &res->seq_res, rqstp);
6918 if (status != 0)
6919 goto out;
6920 status = decode_getdeviceinfo(xdr, res->pdev);
6921 out:
6922 return status;
6923 }
6924
6925 /*
6926 * Decode LAYOUTGET response
6927 */
6928 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6929 struct xdr_stream *xdr,
6930 struct nfs4_layoutget_res *res)
6931 {
6932 struct compound_hdr hdr;
6933 int status;
6934
6935 status = decode_compound_hdr(xdr, &hdr);
6936 if (status)
6937 goto out;
6938 status = decode_sequence(xdr, &res->seq_res, rqstp);
6939 if (status)
6940 goto out;
6941 status = decode_putfh(xdr);
6942 if (status)
6943 goto out;
6944 status = decode_layoutget(xdr, rqstp, res);
6945 out:
6946 return status;
6947 }
6948
6949 /*
6950 * Decode LAYOUTRETURN response
6951 */
6952 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6953 struct xdr_stream *xdr,
6954 struct nfs4_layoutreturn_res *res)
6955 {
6956 struct compound_hdr hdr;
6957 int status;
6958
6959 status = decode_compound_hdr(xdr, &hdr);
6960 if (status)
6961 goto out;
6962 status = decode_sequence(xdr, &res->seq_res, rqstp);
6963 if (status)
6964 goto out;
6965 status = decode_putfh(xdr);
6966 if (status)
6967 goto out;
6968 status = decode_layoutreturn(xdr, res);
6969 out:
6970 return status;
6971 }
6972
6973 /*
6974 * Decode LAYOUTCOMMIT response
6975 */
6976 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6977 struct xdr_stream *xdr,
6978 struct nfs4_layoutcommit_res *res)
6979 {
6980 struct compound_hdr hdr;
6981 int status;
6982
6983 status = decode_compound_hdr(xdr, &hdr);
6984 if (status)
6985 goto out;
6986 status = decode_sequence(xdr, &res->seq_res, rqstp);
6987 if (status)
6988 goto out;
6989 status = decode_putfh(xdr);
6990 if (status)
6991 goto out;
6992 status = decode_layoutcommit(xdr, rqstp, res);
6993 if (status)
6994 goto out;
6995 decode_getfattr(xdr, res->fattr, res->server);
6996 out:
6997 return status;
6998 }
6999
7000 /*
7001 * Decode SECINFO_NO_NAME response
7002 */
7003 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7004 struct xdr_stream *xdr,
7005 struct nfs4_secinfo_res *res)
7006 {
7007 struct compound_hdr hdr;
7008 int status;
7009
7010 status = decode_compound_hdr(xdr, &hdr);
7011 if (status)
7012 goto out;
7013 status = decode_sequence(xdr, &res->seq_res, rqstp);
7014 if (status)
7015 goto out;
7016 status = decode_putrootfh(xdr);
7017 if (status)
7018 goto out;
7019 status = decode_secinfo_no_name(xdr, res);
7020 out:
7021 return status;
7022 }
7023
7024 /*
7025 * Decode TEST_STATEID response
7026 */
7027 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7028 struct xdr_stream *xdr,
7029 struct nfs41_test_stateid_res *res)
7030 {
7031 struct compound_hdr hdr;
7032 int status;
7033
7034 status = decode_compound_hdr(xdr, &hdr);
7035 if (status)
7036 goto out;
7037 status = decode_sequence(xdr, &res->seq_res, rqstp);
7038 if (status)
7039 goto out;
7040 status = decode_test_stateid(xdr, res);
7041 out:
7042 return status;
7043 }
7044
7045 /*
7046 * Decode FREE_STATEID response
7047 */
7048 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7049 struct xdr_stream *xdr,
7050 struct nfs41_free_stateid_res *res)
7051 {
7052 struct compound_hdr hdr;
7053 int status;
7054
7055 status = decode_compound_hdr(xdr, &hdr);
7056 if (status)
7057 goto out;
7058 status = decode_sequence(xdr, &res->seq_res, rqstp);
7059 if (status)
7060 goto out;
7061 status = decode_free_stateid(xdr, res);
7062 out:
7063 return status;
7064 }
7065 #endif /* CONFIG_NFS_V4_1 */
7066
7067 /**
7068 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7069 * the local page cache.
7070 * @xdr: XDR stream where entry resides
7071 * @entry: buffer to fill in with entry data
7072 * @plus: boolean indicating whether this should be a readdirplus entry
7073 *
7074 * Returns zero if successful, otherwise a negative errno value is
7075 * returned.
7076 *
7077 * This function is not invoked during READDIR reply decoding, but
7078 * rather whenever an application invokes the getdents(2) system call
7079 * on a directory already in our cache.
7080 */
7081 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7082 int plus)
7083 {
7084 unsigned int savep;
7085 uint32_t bitmap[3] = {0};
7086 uint32_t len;
7087 __be32 *p = xdr_inline_decode(xdr, 4);
7088 if (unlikely(!p))
7089 goto out_overflow;
7090 if (*p == xdr_zero) {
7091 p = xdr_inline_decode(xdr, 4);
7092 if (unlikely(!p))
7093 goto out_overflow;
7094 if (*p == xdr_zero)
7095 return -EAGAIN;
7096 entry->eof = 1;
7097 return -EBADCOOKIE;
7098 }
7099
7100 p = xdr_inline_decode(xdr, 12);
7101 if (unlikely(!p))
7102 goto out_overflow;
7103 entry->prev_cookie = entry->cookie;
7104 p = xdr_decode_hyper(p, &entry->cookie);
7105 entry->len = be32_to_cpup(p);
7106
7107 p = xdr_inline_decode(xdr, entry->len);
7108 if (unlikely(!p))
7109 goto out_overflow;
7110 entry->name = (const char *) p;
7111
7112 /*
7113 * In case the server doesn't return an inode number,
7114 * we fake one here. (We don't use inode number 0,
7115 * since glibc seems to choke on it...)
7116 */
7117 entry->ino = 1;
7118 entry->fattr->valid = 0;
7119
7120 if (decode_attr_bitmap(xdr, bitmap) < 0)
7121 goto out_overflow;
7122
7123 if (decode_attr_length(xdr, &len, &savep) < 0)
7124 goto out_overflow;
7125
7126 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7127 NULL, entry->server) < 0)
7128 goto out_overflow;
7129 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7130 entry->ino = entry->fattr->mounted_on_fileid;
7131 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7132 entry->ino = entry->fattr->fileid;
7133
7134 entry->d_type = DT_UNKNOWN;
7135 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7136 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7137
7138 return 0;
7139
7140 out_overflow:
7141 print_overflow_msg(__func__, xdr);
7142 return -EAGAIN;
7143 }
7144
7145 /*
7146 * We need to translate between nfs status return values and
7147 * the local errno values which may not be the same.
7148 */
7149 static struct {
7150 int stat;
7151 int errno;
7152 } nfs_errtbl[] = {
7153 { NFS4_OK, 0 },
7154 { NFS4ERR_PERM, -EPERM },
7155 { NFS4ERR_NOENT, -ENOENT },
7156 { NFS4ERR_IO, -errno_NFSERR_IO},
7157 { NFS4ERR_NXIO, -ENXIO },
7158 { NFS4ERR_ACCESS, -EACCES },
7159 { NFS4ERR_EXIST, -EEXIST },
7160 { NFS4ERR_XDEV, -EXDEV },
7161 { NFS4ERR_NOTDIR, -ENOTDIR },
7162 { NFS4ERR_ISDIR, -EISDIR },
7163 { NFS4ERR_INVAL, -EINVAL },
7164 { NFS4ERR_FBIG, -EFBIG },
7165 { NFS4ERR_NOSPC, -ENOSPC },
7166 { NFS4ERR_ROFS, -EROFS },
7167 { NFS4ERR_MLINK, -EMLINK },
7168 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7169 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7170 { NFS4ERR_DQUOT, -EDQUOT },
7171 { NFS4ERR_STALE, -ESTALE },
7172 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7173 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7174 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7175 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7176 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7177 { NFS4ERR_BADTYPE, -EBADTYPE },
7178 { NFS4ERR_LOCKED, -EAGAIN },
7179 { NFS4ERR_SYMLINK, -ELOOP },
7180 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7181 { NFS4ERR_DEADLOCK, -EDEADLK },
7182 { -1, -EIO }
7183 };
7184
7185 /*
7186 * Convert an NFS error code to a local one.
7187 * This one is used jointly by NFSv2 and NFSv3.
7188 */
7189 static int
7190 nfs4_stat_to_errno(int stat)
7191 {
7192 int i;
7193 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7194 if (nfs_errtbl[i].stat == stat)
7195 return nfs_errtbl[i].errno;
7196 }
7197 if (stat <= 10000 || stat > 10100) {
7198 /* The server is looney tunes. */
7199 return -EREMOTEIO;
7200 }
7201 /* If we cannot translate the error, the recovery routines should
7202 * handle it.
7203 * Note: remaining NFSv4 error codes have values > 10000, so should
7204 * not conflict with native Linux error codes.
7205 */
7206 return -stat;
7207 }
7208
7209 #define PROC(proc, argtype, restype) \
7210 [NFSPROC4_CLNT_##proc] = { \
7211 .p_proc = NFSPROC4_COMPOUND, \
7212 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7213 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7214 .p_arglen = NFS4_##argtype##_sz, \
7215 .p_replen = NFS4_##restype##_sz, \
7216 .p_statidx = NFSPROC4_CLNT_##proc, \
7217 .p_name = #proc, \
7218 }
7219
7220 struct rpc_procinfo nfs4_procedures[] = {
7221 PROC(READ, enc_read, dec_read),
7222 PROC(WRITE, enc_write, dec_write),
7223 PROC(COMMIT, enc_commit, dec_commit),
7224 PROC(OPEN, enc_open, dec_open),
7225 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7226 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7227 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7228 PROC(CLOSE, enc_close, dec_close),
7229 PROC(SETATTR, enc_setattr, dec_setattr),
7230 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7231 PROC(RENEW, enc_renew, dec_renew),
7232 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7233 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7234 PROC(LOCK, enc_lock, dec_lock),
7235 PROC(LOCKT, enc_lockt, dec_lockt),
7236 PROC(LOCKU, enc_locku, dec_locku),
7237 PROC(ACCESS, enc_access, dec_access),
7238 PROC(GETATTR, enc_getattr, dec_getattr),
7239 PROC(LOOKUP, enc_lookup, dec_lookup),
7240 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7241 PROC(REMOVE, enc_remove, dec_remove),
7242 PROC(RENAME, enc_rename, dec_rename),
7243 PROC(LINK, enc_link, dec_link),
7244 PROC(SYMLINK, enc_symlink, dec_symlink),
7245 PROC(CREATE, enc_create, dec_create),
7246 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7247 PROC(STATFS, enc_statfs, dec_statfs),
7248 PROC(READLINK, enc_readlink, dec_readlink),
7249 PROC(READDIR, enc_readdir, dec_readdir),
7250 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7251 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7252 PROC(GETACL, enc_getacl, dec_getacl),
7253 PROC(SETACL, enc_setacl, dec_setacl),
7254 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7255 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7256 PROC(SECINFO, enc_secinfo, dec_secinfo),
7257 #if defined(CONFIG_NFS_V4_1)
7258 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7259 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7260 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7261 PROC(SEQUENCE, enc_sequence, dec_sequence),
7262 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7263 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7264 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7265 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7266 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7267 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7268 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7269 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7270 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7271 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7272 PROC(BIND_CONN_TO_SESSION,
7273 enc_bind_conn_to_session, dec_bind_conn_to_session),
7274 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7275 #endif /* CONFIG_NFS_V4_1 */
7276 };
7277
7278 const struct rpc_version nfs_version4 = {
7279 .number = 4,
7280 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7281 .procs = nfs4_procedures
7282 };
7283
7284 /*
7285 * Local variables:
7286 * c-basic-offset: 8
7287 * End:
7288 */
kernel source for telekom puls (alcatel/mediatek)