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50bac70661601f55e533f5693007a429495bf68d
[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 "pnfs.h"
60 #include "netns.h"
61
62 #define NFSDBG_FACILITY NFSDBG_XDR
63
64 /* Mapping from NFS error code to "errno" error code. */
65 #define errno_NFSERR_IO EIO
66
67 static int nfs4_stat_to_errno(int);
68
69 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
70 #ifdef DEBUG
71 #define NFS4_MAXTAGLEN 20
72 #else
73 #define NFS4_MAXTAGLEN 0
74 #endif
75
76 /* lock,open owner id:
77 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
78 */
79 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
80 #define lock_owner_id_maxsz (1 + 1 + 4)
81 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
82 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
83 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84 #define op_encode_hdr_maxsz (1)
85 #define op_decode_hdr_maxsz (2)
86 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
87 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
89 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
91 (NFS4_FHSIZE >> 2))
92 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
93 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
94 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
95 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
96 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
97 ((3+NFS4_FHSIZE) >> 2))
98 #define nfs4_fattr_bitmap_maxsz 4
99 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
100 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
101 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
102 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
103 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104 /* We support only one layout type per file system */
105 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
106 /* This is based on getfattr, which uses the most attributes: */
107 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
108 3 + 3 + 3 + nfs4_owner_maxsz + \
109 nfs4_group_maxsz + decode_mdsthreshold_maxsz))
110 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
111 nfs4_fattr_value_maxsz)
112 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
113 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
114 1 + 2 + 1 + \
115 nfs4_owner_maxsz + \
116 nfs4_group_maxsz + \
117 4 + 4)
118 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
119 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
120 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
121 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
122 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
123 /* The 5 accounts for the PNFS attributes, and assumes that at most three
124 * layout types will be returned.
125 */
126 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
127 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
128 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
129 #define decode_renew_maxsz (op_decode_hdr_maxsz)
130 #define encode_setclientid_maxsz \
131 (op_encode_hdr_maxsz + \
132 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
133 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
134 1 /* sc_prog */ + \
135 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
136 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
137 1) /* sc_cb_ident */
138 #define decode_setclientid_maxsz \
139 (op_decode_hdr_maxsz + \
140 2 + \
141 1024) /* large value for CLID_INUSE */
142 #define encode_setclientid_confirm_maxsz \
143 (op_encode_hdr_maxsz + \
144 3 + (NFS4_VERIFIER_SIZE >> 2))
145 #define decode_setclientid_confirm_maxsz \
146 (op_decode_hdr_maxsz)
147 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
148 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
149 #define encode_share_access_maxsz \
150 (2)
151 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
152 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
153 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
154 #define encode_open_maxsz (op_encode_hdr_maxsz + \
155 2 + encode_share_access_maxsz + 2 + \
156 open_owner_id_maxsz + \
157 encode_opentype_maxsz + \
158 encode_claim_null_maxsz)
159 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
160 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
161 decode_ace_maxsz)
162 #define decode_change_info_maxsz (5)
163 #define decode_open_maxsz (op_decode_hdr_maxsz + \
164 decode_stateid_maxsz + \
165 decode_change_info_maxsz + 1 + \
166 nfs4_fattr_bitmap_maxsz + \
167 decode_delegation_maxsz)
168 #define encode_open_confirm_maxsz \
169 (op_encode_hdr_maxsz + \
170 encode_stateid_maxsz + 1)
171 #define decode_open_confirm_maxsz \
172 (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz)
174 #define encode_open_downgrade_maxsz \
175 (op_encode_hdr_maxsz + \
176 encode_stateid_maxsz + 1 + \
177 encode_share_access_maxsz)
178 #define decode_open_downgrade_maxsz \
179 (op_decode_hdr_maxsz + \
180 decode_stateid_maxsz)
181 #define encode_close_maxsz (op_encode_hdr_maxsz + \
182 1 + encode_stateid_maxsz)
183 #define decode_close_maxsz (op_decode_hdr_maxsz + \
184 decode_stateid_maxsz)
185 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
186 encode_stateid_maxsz + \
187 encode_attrs_maxsz)
188 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
189 nfs4_fattr_bitmap_maxsz)
190 #define encode_read_maxsz (op_encode_hdr_maxsz + \
191 encode_stateid_maxsz + 3)
192 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
193 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
194 2 + encode_verifier_maxsz + 5)
195 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
196 decode_verifier_maxsz)
197 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
198 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
199 #define encode_write_maxsz (op_encode_hdr_maxsz + \
200 encode_stateid_maxsz + 4)
201 #define decode_write_maxsz (op_decode_hdr_maxsz + \
202 2 + decode_verifier_maxsz)
203 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
204 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
205 decode_verifier_maxsz)
206 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
207 nfs4_name_maxsz)
208 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
209 decode_change_info_maxsz)
210 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
211 2 * nfs4_name_maxsz)
212 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
213 decode_change_info_maxsz + \
214 decode_change_info_maxsz)
215 #define encode_link_maxsz (op_encode_hdr_maxsz + \
216 nfs4_name_maxsz)
217 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
218 #define encode_lockowner_maxsz (7)
219 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
220 7 + \
221 1 + encode_stateid_maxsz + 1 + \
222 encode_lockowner_maxsz)
223 #define decode_lock_denied_maxsz \
224 (8 + decode_lockowner_maxsz)
225 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
226 decode_lock_denied_maxsz)
227 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
228 encode_lockowner_maxsz)
229 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
230 decode_lock_denied_maxsz)
231 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
232 encode_stateid_maxsz + \
233 4)
234 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
235 decode_stateid_maxsz)
236 #define encode_release_lockowner_maxsz \
237 (op_encode_hdr_maxsz + \
238 encode_lockowner_maxsz)
239 #define decode_release_lockowner_maxsz \
240 (op_decode_hdr_maxsz)
241 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
242 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
243 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
244 1 + nfs4_name_maxsz + \
245 1 + \
246 nfs4_fattr_maxsz)
247 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
248 #define encode_create_maxsz (op_encode_hdr_maxsz + \
249 1 + 2 + nfs4_name_maxsz + \
250 encode_attrs_maxsz)
251 #define decode_create_maxsz (op_decode_hdr_maxsz + \
252 decode_change_info_maxsz + \
253 nfs4_fattr_bitmap_maxsz)
254 #define encode_statfs_maxsz (encode_getattr_maxsz)
255 #define decode_statfs_maxsz (decode_getattr_maxsz)
256 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
257 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
258 #define encode_getacl_maxsz (encode_getattr_maxsz)
259 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
260 nfs4_fattr_bitmap_maxsz + 1)
261 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
262 encode_stateid_maxsz + 3)
263 #define decode_setacl_maxsz (decode_setattr_maxsz)
264 #define encode_fs_locations_maxsz \
265 (encode_getattr_maxsz)
266 #define decode_fs_locations_maxsz \
267 (0)
268 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
269 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
270
271 #if defined(CONFIG_NFS_V4_1)
272 #define NFS4_MAX_MACHINE_NAME_LEN (64)
273
274 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
275 encode_verifier_maxsz + \
276 1 /* co_ownerid.len */ + \
277 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
278 1 /* flags */ + \
279 1 /* spa_how */ + \
280 0 /* SP4_NONE (for now) */ + \
281 1 /* implementation id array of size 1 */ + \
282 1 /* nii_domain */ + \
283 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
284 1 /* nii_name */ + \
285 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
286 3 /* nii_date */)
287 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
288 2 /* eir_clientid */ + \
289 1 /* eir_sequenceid */ + \
290 1 /* eir_flags */ + \
291 1 /* spr_how */ + \
292 0 /* SP4_NONE (for now) */ + \
293 2 /* eir_server_owner.so_minor_id */ + \
294 /* eir_server_owner.so_major_id<> */ \
295 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
296 /* eir_server_scope<> */ \
297 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
298 1 /* eir_server_impl_id array length */ + \
299 1 /* nii_domain */ + \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
301 1 /* nii_name */ + \
302 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
303 3 /* nii_date */)
304 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
305 #define decode_channel_attrs_maxsz (6 + \
306 1 /* ca_rdma_ird.len */ + \
307 1 /* ca_rdma_ird */)
308 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
309 2 /* csa_clientid */ + \
310 1 /* csa_sequence */ + \
311 1 /* csa_flags */ + \
312 encode_channel_attrs_maxsz + \
313 encode_channel_attrs_maxsz + \
314 1 /* csa_cb_program */ + \
315 1 /* csa_sec_parms.len (1) */ + \
316 1 /* cb_secflavor (AUTH_SYS) */ + \
317 1 /* stamp */ + \
318 1 /* machinename.len */ + \
319 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
320 1 /* uid */ + \
321 1 /* gid */ + \
322 1 /* gids.len (0) */)
323 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
324 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
325 1 /* csr_sequence */ + \
326 1 /* csr_flags */ + \
327 decode_channel_attrs_maxsz + \
328 decode_channel_attrs_maxsz)
329 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
330 /* bctsa_sessid */ \
331 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
332 1 /* bctsa_dir */ + \
333 1 /* bctsa_use_conn_in_rdma_mode */)
334 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
335 /* bctsr_sessid */ \
336 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
337 1 /* bctsr_dir */ + \
338 1 /* bctsr_use_conn_in_rdma_mode */)
339 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
340 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
341 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
342 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
343 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
344 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
345 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
346 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
347 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
348 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
349 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
350 encode_verifier_maxsz)
351 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
352 2 /* nfs_cookie4 gdlr_cookie */ + \
353 decode_verifier_maxsz \
354 /* verifier4 gdlr_verifier */ + \
355 1 /* gdlr_deviceid_list count */ + \
356 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
357 NFS4_DEVICEID4_SIZE) \
358 /* gdlr_deviceid_list */ + \
359 1 /* bool gdlr_eof */)
360 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
361 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
362 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
363 1 /* layout type */ + \
364 1 /* opaque devaddr4 length */ + \
365 /* devaddr4 payload is read into page */ \
366 1 /* notification bitmap length */ + \
367 1 /* notification bitmap */)
368 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
369 encode_stateid_maxsz)
370 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
371 decode_stateid_maxsz + \
372 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
373 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
374 2 /* offset */ + \
375 2 /* length */ + \
376 1 /* reclaim */ + \
377 encode_stateid_maxsz + \
378 1 /* new offset (true) */ + \
379 2 /* last byte written */ + \
380 1 /* nt_timechanged (false) */ + \
381 1 /* layoutupdate4 layout type */ + \
382 1 /* NULL filelayout layoutupdate4 payload */)
383 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
384 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
385 encode_stateid_maxsz + \
386 1 /* FIXME: opaque lrf_body always empty at the moment */)
387 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
388 1 + decode_stateid_maxsz)
389 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
390 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
391 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
392 XDR_QUADLEN(NFS4_STATEID_SIZE))
393 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
394 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
395 XDR_QUADLEN(NFS4_STATEID_SIZE))
396 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
397 #else /* CONFIG_NFS_V4_1 */
398 #define encode_sequence_maxsz 0
399 #define decode_sequence_maxsz 0
400 #endif /* CONFIG_NFS_V4_1 */
401
402 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
403 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
404 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
405 encode_sequence_maxsz + \
406 encode_putfh_maxsz + \
407 encode_read_maxsz)
408 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
409 decode_sequence_maxsz + \
410 decode_putfh_maxsz + \
411 decode_read_maxsz)
412 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
413 encode_sequence_maxsz + \
414 encode_putfh_maxsz + \
415 encode_readlink_maxsz)
416 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
417 decode_sequence_maxsz + \
418 decode_putfh_maxsz + \
419 decode_readlink_maxsz)
420 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
421 encode_sequence_maxsz + \
422 encode_putfh_maxsz + \
423 encode_readdir_maxsz)
424 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
425 decode_sequence_maxsz + \
426 decode_putfh_maxsz + \
427 decode_readdir_maxsz)
428 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
429 encode_sequence_maxsz + \
430 encode_putfh_maxsz + \
431 encode_write_maxsz + \
432 encode_getattr_maxsz)
433 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
434 decode_sequence_maxsz + \
435 decode_putfh_maxsz + \
436 decode_write_maxsz + \
437 decode_getattr_maxsz)
438 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
439 encode_sequence_maxsz + \
440 encode_putfh_maxsz + \
441 encode_commit_maxsz)
442 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
443 decode_sequence_maxsz + \
444 decode_putfh_maxsz + \
445 decode_commit_maxsz)
446 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
447 encode_sequence_maxsz + \
448 encode_putfh_maxsz + \
449 encode_open_maxsz + \
450 encode_access_maxsz + \
451 encode_getfh_maxsz + \
452 encode_getattr_maxsz)
453 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
454 decode_sequence_maxsz + \
455 decode_putfh_maxsz + \
456 decode_open_maxsz + \
457 decode_access_maxsz + \
458 decode_getfh_maxsz + \
459 decode_getattr_maxsz)
460 #define NFS4_enc_open_confirm_sz \
461 (compound_encode_hdr_maxsz + \
462 encode_putfh_maxsz + \
463 encode_open_confirm_maxsz)
464 #define NFS4_dec_open_confirm_sz \
465 (compound_decode_hdr_maxsz + \
466 decode_putfh_maxsz + \
467 decode_open_confirm_maxsz)
468 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
469 encode_sequence_maxsz + \
470 encode_putfh_maxsz + \
471 encode_open_maxsz + \
472 encode_access_maxsz + \
473 encode_getattr_maxsz)
474 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
475 decode_sequence_maxsz + \
476 decode_putfh_maxsz + \
477 decode_open_maxsz + \
478 decode_access_maxsz + \
479 decode_getattr_maxsz)
480 #define NFS4_enc_open_downgrade_sz \
481 (compound_encode_hdr_maxsz + \
482 encode_sequence_maxsz + \
483 encode_putfh_maxsz + \
484 encode_open_downgrade_maxsz + \
485 encode_getattr_maxsz)
486 #define NFS4_dec_open_downgrade_sz \
487 (compound_decode_hdr_maxsz + \
488 decode_sequence_maxsz + \
489 decode_putfh_maxsz + \
490 decode_open_downgrade_maxsz + \
491 decode_getattr_maxsz)
492 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
493 encode_sequence_maxsz + \
494 encode_putfh_maxsz + \
495 encode_close_maxsz + \
496 encode_getattr_maxsz)
497 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
498 decode_sequence_maxsz + \
499 decode_putfh_maxsz + \
500 decode_close_maxsz + \
501 decode_getattr_maxsz)
502 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
503 encode_sequence_maxsz + \
504 encode_putfh_maxsz + \
505 encode_setattr_maxsz + \
506 encode_getattr_maxsz)
507 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
508 decode_sequence_maxsz + \
509 decode_putfh_maxsz + \
510 decode_setattr_maxsz + \
511 decode_getattr_maxsz)
512 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
513 encode_sequence_maxsz + \
514 encode_putfh_maxsz + \
515 encode_fsinfo_maxsz)
516 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
517 decode_sequence_maxsz + \
518 decode_putfh_maxsz + \
519 decode_fsinfo_maxsz)
520 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
521 encode_renew_maxsz)
522 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
523 decode_renew_maxsz)
524 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
525 encode_setclientid_maxsz)
526 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
527 decode_setclientid_maxsz)
528 #define NFS4_enc_setclientid_confirm_sz \
529 (compound_encode_hdr_maxsz + \
530 encode_setclientid_confirm_maxsz + \
531 encode_putrootfh_maxsz + \
532 encode_fsinfo_maxsz)
533 #define NFS4_dec_setclientid_confirm_sz \
534 (compound_decode_hdr_maxsz + \
535 decode_setclientid_confirm_maxsz + \
536 decode_putrootfh_maxsz + \
537 decode_fsinfo_maxsz)
538 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
539 encode_sequence_maxsz + \
540 encode_putfh_maxsz + \
541 encode_lock_maxsz)
542 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
543 decode_sequence_maxsz + \
544 decode_putfh_maxsz + \
545 decode_lock_maxsz)
546 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
547 encode_sequence_maxsz + \
548 encode_putfh_maxsz + \
549 encode_lockt_maxsz)
550 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
551 decode_sequence_maxsz + \
552 decode_putfh_maxsz + \
553 decode_lockt_maxsz)
554 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
555 encode_sequence_maxsz + \
556 encode_putfh_maxsz + \
557 encode_locku_maxsz)
558 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
559 decode_sequence_maxsz + \
560 decode_putfh_maxsz + \
561 decode_locku_maxsz)
562 #define NFS4_enc_release_lockowner_sz \
563 (compound_encode_hdr_maxsz + \
564 encode_lockowner_maxsz)
565 #define NFS4_dec_release_lockowner_sz \
566 (compound_decode_hdr_maxsz + \
567 decode_lockowner_maxsz)
568 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
569 encode_sequence_maxsz + \
570 encode_putfh_maxsz + \
571 encode_access_maxsz + \
572 encode_getattr_maxsz)
573 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
574 decode_sequence_maxsz + \
575 decode_putfh_maxsz + \
576 decode_access_maxsz + \
577 decode_getattr_maxsz)
578 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
579 encode_sequence_maxsz + \
580 encode_putfh_maxsz + \
581 encode_getattr_maxsz)
582 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
583 decode_sequence_maxsz + \
584 decode_putfh_maxsz + \
585 decode_getattr_maxsz)
586 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
587 encode_sequence_maxsz + \
588 encode_putfh_maxsz + \
589 encode_lookup_maxsz + \
590 encode_getattr_maxsz + \
591 encode_getfh_maxsz)
592 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
593 decode_sequence_maxsz + \
594 decode_putfh_maxsz + \
595 decode_lookup_maxsz + \
596 decode_getattr_maxsz + \
597 decode_getfh_maxsz)
598 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
599 encode_sequence_maxsz + \
600 encode_putrootfh_maxsz + \
601 encode_getattr_maxsz + \
602 encode_getfh_maxsz)
603 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
604 decode_sequence_maxsz + \
605 decode_putrootfh_maxsz + \
606 decode_getattr_maxsz + \
607 decode_getfh_maxsz)
608 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
609 encode_sequence_maxsz + \
610 encode_putfh_maxsz + \
611 encode_remove_maxsz)
612 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
613 decode_sequence_maxsz + \
614 decode_putfh_maxsz + \
615 decode_remove_maxsz)
616 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
617 encode_sequence_maxsz + \
618 encode_putfh_maxsz + \
619 encode_savefh_maxsz + \
620 encode_putfh_maxsz + \
621 encode_rename_maxsz)
622 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
623 decode_sequence_maxsz + \
624 decode_putfh_maxsz + \
625 decode_savefh_maxsz + \
626 decode_putfh_maxsz + \
627 decode_rename_maxsz)
628 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
629 encode_sequence_maxsz + \
630 encode_putfh_maxsz + \
631 encode_savefh_maxsz + \
632 encode_putfh_maxsz + \
633 encode_link_maxsz + \
634 encode_restorefh_maxsz + \
635 encode_getattr_maxsz)
636 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
637 decode_sequence_maxsz + \
638 decode_putfh_maxsz + \
639 decode_savefh_maxsz + \
640 decode_putfh_maxsz + \
641 decode_link_maxsz + \
642 decode_restorefh_maxsz + \
643 decode_getattr_maxsz)
644 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
645 encode_sequence_maxsz + \
646 encode_putfh_maxsz + \
647 encode_symlink_maxsz + \
648 encode_getattr_maxsz + \
649 encode_getfh_maxsz)
650 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
651 decode_sequence_maxsz + \
652 decode_putfh_maxsz + \
653 decode_symlink_maxsz + \
654 decode_getattr_maxsz + \
655 decode_getfh_maxsz)
656 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
657 encode_sequence_maxsz + \
658 encode_putfh_maxsz + \
659 encode_create_maxsz + \
660 encode_getfh_maxsz + \
661 encode_getattr_maxsz)
662 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
663 decode_sequence_maxsz + \
664 decode_putfh_maxsz + \
665 decode_create_maxsz + \
666 decode_getfh_maxsz + \
667 decode_getattr_maxsz)
668 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
669 encode_sequence_maxsz + \
670 encode_putfh_maxsz + \
671 encode_getattr_maxsz)
672 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
673 decode_sequence_maxsz + \
674 decode_putfh_maxsz + \
675 decode_getattr_maxsz)
676 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
677 encode_sequence_maxsz + \
678 encode_putfh_maxsz + \
679 encode_statfs_maxsz)
680 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
681 decode_sequence_maxsz + \
682 decode_putfh_maxsz + \
683 decode_statfs_maxsz)
684 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
685 encode_sequence_maxsz + \
686 encode_putfh_maxsz + \
687 encode_getattr_maxsz)
688 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
689 decode_sequence_maxsz + \
690 decode_putfh_maxsz + \
691 decode_getattr_maxsz)
692 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
693 encode_sequence_maxsz + \
694 encode_putfh_maxsz + \
695 encode_delegreturn_maxsz + \
696 encode_getattr_maxsz)
697 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
698 decode_sequence_maxsz + \
699 decode_delegreturn_maxsz + \
700 decode_getattr_maxsz)
701 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
702 encode_sequence_maxsz + \
703 encode_putfh_maxsz + \
704 encode_getacl_maxsz)
705 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
706 decode_sequence_maxsz + \
707 decode_putfh_maxsz + \
708 decode_getacl_maxsz)
709 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
710 encode_sequence_maxsz + \
711 encode_putfh_maxsz + \
712 encode_setacl_maxsz)
713 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
714 decode_sequence_maxsz + \
715 decode_putfh_maxsz + \
716 decode_setacl_maxsz)
717 #define NFS4_enc_fs_locations_sz \
718 (compound_encode_hdr_maxsz + \
719 encode_sequence_maxsz + \
720 encode_putfh_maxsz + \
721 encode_lookup_maxsz + \
722 encode_fs_locations_maxsz)
723 #define NFS4_dec_fs_locations_sz \
724 (compound_decode_hdr_maxsz + \
725 decode_sequence_maxsz + \
726 decode_putfh_maxsz + \
727 decode_lookup_maxsz + \
728 decode_fs_locations_maxsz)
729 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
730 encode_sequence_maxsz + \
731 encode_putfh_maxsz + \
732 encode_secinfo_maxsz)
733 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
734 decode_sequence_maxsz + \
735 decode_putfh_maxsz + \
736 decode_secinfo_maxsz)
737 #if defined(CONFIG_NFS_V4_1)
738 #define NFS4_enc_bind_conn_to_session_sz \
739 (compound_encode_hdr_maxsz + \
740 encode_bind_conn_to_session_maxsz)
741 #define NFS4_dec_bind_conn_to_session_sz \
742 (compound_decode_hdr_maxsz + \
743 decode_bind_conn_to_session_maxsz)
744 #define NFS4_enc_exchange_id_sz \
745 (compound_encode_hdr_maxsz + \
746 encode_exchange_id_maxsz)
747 #define NFS4_dec_exchange_id_sz \
748 (compound_decode_hdr_maxsz + \
749 decode_exchange_id_maxsz)
750 #define NFS4_enc_create_session_sz \
751 (compound_encode_hdr_maxsz + \
752 encode_create_session_maxsz)
753 #define NFS4_dec_create_session_sz \
754 (compound_decode_hdr_maxsz + \
755 decode_create_session_maxsz)
756 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
757 encode_destroy_session_maxsz)
758 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
759 decode_destroy_session_maxsz)
760 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
761 encode_destroy_clientid_maxsz)
762 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
763 decode_destroy_clientid_maxsz)
764 #define NFS4_enc_sequence_sz \
765 (compound_decode_hdr_maxsz + \
766 encode_sequence_maxsz)
767 #define NFS4_dec_sequence_sz \
768 (compound_decode_hdr_maxsz + \
769 decode_sequence_maxsz)
770 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
771 encode_sequence_maxsz + \
772 encode_putrootfh_maxsz + \
773 encode_fsinfo_maxsz)
774 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
775 decode_sequence_maxsz + \
776 decode_putrootfh_maxsz + \
777 decode_fsinfo_maxsz)
778 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
779 encode_sequence_maxsz + \
780 encode_reclaim_complete_maxsz)
781 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz + \
783 decode_reclaim_complete_maxsz)
784 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
785 encode_sequence_maxsz + \
786 encode_putfh_maxsz + \
787 encode_getdevicelist_maxsz)
788 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
789 decode_sequence_maxsz + \
790 decode_putfh_maxsz + \
791 decode_getdevicelist_maxsz)
792 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
793 encode_sequence_maxsz +\
794 encode_getdeviceinfo_maxsz)
795 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
796 decode_sequence_maxsz + \
797 decode_getdeviceinfo_maxsz)
798 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
799 encode_sequence_maxsz + \
800 encode_putfh_maxsz + \
801 encode_layoutget_maxsz)
802 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
803 decode_sequence_maxsz + \
804 decode_putfh_maxsz + \
805 decode_layoutget_maxsz)
806 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
807 encode_sequence_maxsz +\
808 encode_putfh_maxsz + \
809 encode_layoutcommit_maxsz + \
810 encode_getattr_maxsz)
811 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
812 decode_sequence_maxsz + \
813 decode_putfh_maxsz + \
814 decode_layoutcommit_maxsz + \
815 decode_getattr_maxsz)
816 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
817 encode_sequence_maxsz + \
818 encode_putfh_maxsz + \
819 encode_layoutreturn_maxsz)
820 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
821 decode_sequence_maxsz + \
822 decode_putfh_maxsz + \
823 decode_layoutreturn_maxsz)
824 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
825 encode_sequence_maxsz + \
826 encode_putrootfh_maxsz +\
827 encode_secinfo_no_name_maxsz)
828 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
829 decode_sequence_maxsz + \
830 decode_putrootfh_maxsz + \
831 decode_secinfo_no_name_maxsz)
832 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
833 encode_sequence_maxsz + \
834 encode_test_stateid_maxsz)
835 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
836 decode_sequence_maxsz + \
837 decode_test_stateid_maxsz)
838 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
839 encode_sequence_maxsz + \
840 encode_free_stateid_maxsz)
841 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
842 decode_sequence_maxsz + \
843 decode_free_stateid_maxsz)
844
845 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
846 compound_encode_hdr_maxsz +
847 encode_sequence_maxsz +
848 encode_putfh_maxsz +
849 encode_getattr_maxsz) *
850 XDR_UNIT);
851
852 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
853 compound_decode_hdr_maxsz +
854 decode_sequence_maxsz +
855 decode_putfh_maxsz) *
856 XDR_UNIT);
857 #endif /* CONFIG_NFS_V4_1 */
858
859 static const umode_t nfs_type2fmt[] = {
860 [NF4BAD] = 0,
861 [NF4REG] = S_IFREG,
862 [NF4DIR] = S_IFDIR,
863 [NF4BLK] = S_IFBLK,
864 [NF4CHR] = S_IFCHR,
865 [NF4LNK] = S_IFLNK,
866 [NF4SOCK] = S_IFSOCK,
867 [NF4FIFO] = S_IFIFO,
868 [NF4ATTRDIR] = 0,
869 [NF4NAMEDATTR] = 0,
870 };
871
872 struct compound_hdr {
873 int32_t status;
874 uint32_t nops;
875 __be32 * nops_p;
876 uint32_t taglen;
877 char * tag;
878 uint32_t replen; /* expected reply words */
879 u32 minorversion;
880 };
881
882 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
883 {
884 __be32 *p = xdr_reserve_space(xdr, nbytes);
885 BUG_ON(!p);
886 return p;
887 }
888
889 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
890 {
891 __be32 *p;
892
893 p = xdr_reserve_space(xdr, len);
894 xdr_encode_opaque_fixed(p, buf, len);
895 }
896
897 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
898 {
899 __be32 *p;
900
901 p = reserve_space(xdr, 4 + len);
902 xdr_encode_opaque(p, str, len);
903 }
904
905 static void encode_uint32(struct xdr_stream *xdr, u32 n)
906 {
907 __be32 *p;
908
909 p = reserve_space(xdr, 4);
910 *p = cpu_to_be32(n);
911 }
912
913 static void encode_uint64(struct xdr_stream *xdr, u64 n)
914 {
915 __be32 *p;
916
917 p = reserve_space(xdr, 8);
918 xdr_encode_hyper(p, n);
919 }
920
921 static void encode_nfs4_seqid(struct xdr_stream *xdr,
922 const struct nfs_seqid *seqid)
923 {
924 encode_uint32(xdr, seqid->sequence->counter);
925 }
926
927 static void encode_compound_hdr(struct xdr_stream *xdr,
928 struct rpc_rqst *req,
929 struct compound_hdr *hdr)
930 {
931 __be32 *p;
932 struct rpc_auth *auth = req->rq_cred->cr_auth;
933
934 /* initialize running count of expected bytes in reply.
935 * NOTE: the replied tag SHOULD be the same is the one sent,
936 * but this is not required as a MUST for the server to do so. */
937 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
938
939 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
940 encode_string(xdr, hdr->taglen, hdr->tag);
941 p = reserve_space(xdr, 8);
942 *p++ = cpu_to_be32(hdr->minorversion);
943 hdr->nops_p = p;
944 *p = cpu_to_be32(hdr->nops);
945 }
946
947 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
948 uint32_t replen,
949 struct compound_hdr *hdr)
950 {
951 encode_uint32(xdr, op);
952 hdr->nops++;
953 hdr->replen += replen;
954 }
955
956 static void encode_nops(struct compound_hdr *hdr)
957 {
958 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
959 *hdr->nops_p = htonl(hdr->nops);
960 }
961
962 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
963 {
964 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
965 }
966
967 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
968 {
969 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
970 }
971
972 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
973 {
974 char owner_name[IDMAP_NAMESZ];
975 char owner_group[IDMAP_NAMESZ];
976 int owner_namelen = 0;
977 int owner_grouplen = 0;
978 __be32 *p;
979 __be32 *q;
980 int len;
981 uint32_t bmval0 = 0;
982 uint32_t bmval1 = 0;
983
984 /*
985 * We reserve enough space to write the entire attribute buffer at once.
986 * In the worst-case, this would be
987 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
988 * = 36 bytes, plus any contribution from variable-length fields
989 * such as owner/group.
990 */
991 len = 16;
992
993 /* Sigh */
994 if (iap->ia_valid & ATTR_SIZE)
995 len += 8;
996 if (iap->ia_valid & ATTR_MODE)
997 len += 4;
998 if (iap->ia_valid & ATTR_UID) {
999 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1000 if (owner_namelen < 0) {
1001 dprintk("nfs: couldn't resolve uid %d to string\n",
1002 iap->ia_uid);
1003 /* XXX */
1004 strcpy(owner_name, "nobody");
1005 owner_namelen = sizeof("nobody") - 1;
1006 /* goto out; */
1007 }
1008 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1009 }
1010 if (iap->ia_valid & ATTR_GID) {
1011 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1012 if (owner_grouplen < 0) {
1013 dprintk("nfs: couldn't resolve gid %d to string\n",
1014 iap->ia_gid);
1015 strcpy(owner_group, "nobody");
1016 owner_grouplen = sizeof("nobody") - 1;
1017 /* goto out; */
1018 }
1019 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1020 }
1021 if (iap->ia_valid & ATTR_ATIME_SET)
1022 len += 16;
1023 else if (iap->ia_valid & ATTR_ATIME)
1024 len += 4;
1025 if (iap->ia_valid & ATTR_MTIME_SET)
1026 len += 16;
1027 else if (iap->ia_valid & ATTR_MTIME)
1028 len += 4;
1029 p = reserve_space(xdr, len);
1030
1031 /*
1032 * We write the bitmap length now, but leave the bitmap and the attribute
1033 * buffer length to be backfilled at the end of this routine.
1034 */
1035 *p++ = cpu_to_be32(2);
1036 q = p;
1037 p += 3;
1038
1039 if (iap->ia_valid & ATTR_SIZE) {
1040 bmval0 |= FATTR4_WORD0_SIZE;
1041 p = xdr_encode_hyper(p, iap->ia_size);
1042 }
1043 if (iap->ia_valid & ATTR_MODE) {
1044 bmval1 |= FATTR4_WORD1_MODE;
1045 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1046 }
1047 if (iap->ia_valid & ATTR_UID) {
1048 bmval1 |= FATTR4_WORD1_OWNER;
1049 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1050 }
1051 if (iap->ia_valid & ATTR_GID) {
1052 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1053 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1054 }
1055 if (iap->ia_valid & ATTR_ATIME_SET) {
1056 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1057 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1058 *p++ = cpu_to_be32(0);
1059 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1060 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1061 }
1062 else if (iap->ia_valid & ATTR_ATIME) {
1063 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1064 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1065 }
1066 if (iap->ia_valid & ATTR_MTIME_SET) {
1067 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1068 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1069 *p++ = cpu_to_be32(0);
1070 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1071 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1072 }
1073 else if (iap->ia_valid & ATTR_MTIME) {
1074 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1075 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1076 }
1077
1078 /*
1079 * Now we backfill the bitmap and the attribute buffer length.
1080 */
1081 if (len != ((char *)p - (char *)q) + 4) {
1082 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1083 len, ((char *)p - (char *)q) + 4);
1084 BUG();
1085 }
1086 len = (char *)p - (char *)q - 12;
1087 *q++ = htonl(bmval0);
1088 *q++ = htonl(bmval1);
1089 *q = htonl(len);
1090
1091 /* out: */
1092 }
1093
1094 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1095 {
1096 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1097 encode_uint32(xdr, access);
1098 }
1099
1100 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1101 {
1102 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1103 encode_nfs4_seqid(xdr, arg->seqid);
1104 encode_nfs4_stateid(xdr, arg->stateid);
1105 }
1106
1107 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1108 {
1109 __be32 *p;
1110
1111 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1112 p = reserve_space(xdr, 12);
1113 p = xdr_encode_hyper(p, args->offset);
1114 *p = cpu_to_be32(args->count);
1115 }
1116
1117 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1118 {
1119 __be32 *p;
1120
1121 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1122 encode_uint32(xdr, create->ftype);
1123
1124 switch (create->ftype) {
1125 case NF4LNK:
1126 p = reserve_space(xdr, 4);
1127 *p = cpu_to_be32(create->u.symlink.len);
1128 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1129 break;
1130
1131 case NF4BLK: case NF4CHR:
1132 p = reserve_space(xdr, 8);
1133 *p++ = cpu_to_be32(create->u.device.specdata1);
1134 *p = cpu_to_be32(create->u.device.specdata2);
1135 break;
1136
1137 default:
1138 break;
1139 }
1140
1141 encode_string(xdr, create->name->len, create->name->name);
1142 encode_attrs(xdr, create->attrs, create->server);
1143 }
1144
1145 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1146 {
1147 __be32 *p;
1148
1149 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1150 p = reserve_space(xdr, 8);
1151 *p++ = cpu_to_be32(1);
1152 *p = cpu_to_be32(bitmap);
1153 }
1154
1155 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1156 {
1157 __be32 *p;
1158
1159 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1160 p = reserve_space(xdr, 12);
1161 *p++ = cpu_to_be32(2);
1162 *p++ = cpu_to_be32(bm0);
1163 *p = cpu_to_be32(bm1);
1164 }
1165
1166 static void
1167 encode_getattr_three(struct xdr_stream *xdr,
1168 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1169 struct compound_hdr *hdr)
1170 {
1171 __be32 *p;
1172
1173 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1174 if (bm2) {
1175 p = reserve_space(xdr, 16);
1176 *p++ = cpu_to_be32(3);
1177 *p++ = cpu_to_be32(bm0);
1178 *p++ = cpu_to_be32(bm1);
1179 *p = cpu_to_be32(bm2);
1180 } else if (bm1) {
1181 p = reserve_space(xdr, 12);
1182 *p++ = cpu_to_be32(2);
1183 *p++ = cpu_to_be32(bm0);
1184 *p = cpu_to_be32(bm1);
1185 } else {
1186 p = reserve_space(xdr, 8);
1187 *p++ = cpu_to_be32(1);
1188 *p = cpu_to_be32(bm0);
1189 }
1190 }
1191
1192 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1193 {
1194 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1195 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1196 }
1197
1198 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1199 const u32 *open_bitmap,
1200 struct compound_hdr *hdr)
1201 {
1202 encode_getattr_three(xdr,
1203 bitmask[0] & open_bitmap[0],
1204 bitmask[1] & open_bitmap[1],
1205 bitmask[2] & open_bitmap[2],
1206 hdr);
1207 }
1208
1209 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1210 {
1211 encode_getattr_three(xdr,
1212 bitmask[0] & nfs4_fsinfo_bitmap[0],
1213 bitmask[1] & nfs4_fsinfo_bitmap[1],
1214 bitmask[2] & nfs4_fsinfo_bitmap[2],
1215 hdr);
1216 }
1217
1218 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1219 {
1220 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1221 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1222 }
1223
1224 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1225 {
1226 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1227 }
1228
1229 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1230 {
1231 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1232 encode_string(xdr, name->len, name->name);
1233 }
1234
1235 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1236 {
1237 if (fl->fl_type == F_RDLCK)
1238 return block ? NFS4_READW_LT : NFS4_READ_LT;
1239 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1240 }
1241
1242 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1243 {
1244 if (fl->fl_end == OFFSET_MAX)
1245 return ~(uint64_t)0;
1246 return fl->fl_end - fl->fl_start + 1;
1247 }
1248
1249 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1250 {
1251 __be32 *p;
1252
1253 p = reserve_space(xdr, 32);
1254 p = xdr_encode_hyper(p, lowner->clientid);
1255 *p++ = cpu_to_be32(20);
1256 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1257 *p++ = cpu_to_be32(lowner->s_dev);
1258 xdr_encode_hyper(p, lowner->id);
1259 }
1260
1261 /*
1262 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1263 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1264 */
1265 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1266 {
1267 __be32 *p;
1268
1269 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1270 p = reserve_space(xdr, 28);
1271 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1272 *p++ = cpu_to_be32(args->reclaim);
1273 p = xdr_encode_hyper(p, args->fl->fl_start);
1274 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1275 *p = cpu_to_be32(args->new_lock_owner);
1276 if (args->new_lock_owner){
1277 encode_nfs4_seqid(xdr, args->open_seqid);
1278 encode_nfs4_stateid(xdr, args->open_stateid);
1279 encode_nfs4_seqid(xdr, args->lock_seqid);
1280 encode_lockowner(xdr, &args->lock_owner);
1281 }
1282 else {
1283 encode_nfs4_stateid(xdr, args->lock_stateid);
1284 encode_nfs4_seqid(xdr, args->lock_seqid);
1285 }
1286 }
1287
1288 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1289 {
1290 __be32 *p;
1291
1292 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1293 p = reserve_space(xdr, 20);
1294 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1295 p = xdr_encode_hyper(p, args->fl->fl_start);
1296 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1297 encode_lockowner(xdr, &args->lock_owner);
1298 }
1299
1300 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1301 {
1302 __be32 *p;
1303
1304 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1305 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1306 encode_nfs4_seqid(xdr, args->seqid);
1307 encode_nfs4_stateid(xdr, args->stateid);
1308 p = reserve_space(xdr, 16);
1309 p = xdr_encode_hyper(p, args->fl->fl_start);
1310 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1311 }
1312
1313 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1314 {
1315 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1316 encode_lockowner(xdr, lowner);
1317 }
1318
1319 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1320 {
1321 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1322 encode_string(xdr, name->len, name->name);
1323 }
1324
1325 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1326 {
1327 __be32 *p;
1328
1329 p = reserve_space(xdr, 8);
1330 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1331 case FMODE_READ:
1332 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1333 break;
1334 case FMODE_WRITE:
1335 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1336 break;
1337 case FMODE_READ|FMODE_WRITE:
1338 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1339 break;
1340 default:
1341 *p++ = cpu_to_be32(0);
1342 }
1343 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1344 }
1345
1346 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1347 {
1348 __be32 *p;
1349 /*
1350 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1351 * owner 4 = 32
1352 */
1353 encode_nfs4_seqid(xdr, arg->seqid);
1354 encode_share_access(xdr, arg->fmode);
1355 p = reserve_space(xdr, 36);
1356 p = xdr_encode_hyper(p, arg->clientid);
1357 *p++ = cpu_to_be32(24);
1358 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1359 *p++ = cpu_to_be32(arg->server->s_dev);
1360 *p++ = cpu_to_be32(arg->id.uniquifier);
1361 xdr_encode_hyper(p, arg->id.create_time);
1362 }
1363
1364 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1365 {
1366 __be32 *p;
1367 struct nfs_client *clp;
1368
1369 p = reserve_space(xdr, 4);
1370 switch(arg->open_flags & O_EXCL) {
1371 case 0:
1372 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1373 encode_attrs(xdr, arg->u.attrs, arg->server);
1374 break;
1375 default:
1376 clp = arg->server->nfs_client;
1377 if (clp->cl_mvops->minor_version > 0) {
1378 if (nfs4_has_persistent_session(clp)) {
1379 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1380 encode_attrs(xdr, arg->u.attrs, arg->server);
1381 } else {
1382 struct iattr dummy;
1383
1384 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1385 encode_nfs4_verifier(xdr, &arg->u.verifier);
1386 dummy.ia_valid = 0;
1387 encode_attrs(xdr, &dummy, arg->server);
1388 }
1389 } else {
1390 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1391 encode_nfs4_verifier(xdr, &arg->u.verifier);
1392 }
1393 }
1394 }
1395
1396 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1397 {
1398 __be32 *p;
1399
1400 p = reserve_space(xdr, 4);
1401 switch (arg->open_flags & O_CREAT) {
1402 case 0:
1403 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1404 break;
1405 default:
1406 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1407 encode_createmode(xdr, arg);
1408 }
1409 }
1410
1411 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1412 {
1413 __be32 *p;
1414
1415 p = reserve_space(xdr, 4);
1416 switch (delegation_type) {
1417 case 0:
1418 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1419 break;
1420 case FMODE_READ:
1421 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1422 break;
1423 case FMODE_WRITE|FMODE_READ:
1424 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1425 break;
1426 default:
1427 BUG();
1428 }
1429 }
1430
1431 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1432 {
1433 __be32 *p;
1434
1435 p = reserve_space(xdr, 4);
1436 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1437 encode_string(xdr, name->len, name->name);
1438 }
1439
1440 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1441 {
1442 __be32 *p;
1443
1444 p = reserve_space(xdr, 4);
1445 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1446 encode_delegation_type(xdr, type);
1447 }
1448
1449 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1450 {
1451 __be32 *p;
1452
1453 p = reserve_space(xdr, 4);
1454 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1455 encode_nfs4_stateid(xdr, stateid);
1456 encode_string(xdr, name->len, name->name);
1457 }
1458
1459 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1460 {
1461 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1462 encode_openhdr(xdr, arg);
1463 encode_opentype(xdr, arg);
1464 switch (arg->claim) {
1465 case NFS4_OPEN_CLAIM_NULL:
1466 encode_claim_null(xdr, arg->name);
1467 break;
1468 case NFS4_OPEN_CLAIM_PREVIOUS:
1469 encode_claim_previous(xdr, arg->u.delegation_type);
1470 break;
1471 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1472 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1473 break;
1474 default:
1475 BUG();
1476 }
1477 }
1478
1479 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1480 {
1481 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1482 encode_nfs4_stateid(xdr, arg->stateid);
1483 encode_nfs4_seqid(xdr, arg->seqid);
1484 }
1485
1486 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1487 {
1488 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1489 encode_nfs4_stateid(xdr, arg->stateid);
1490 encode_nfs4_seqid(xdr, arg->seqid);
1491 encode_share_access(xdr, arg->fmode);
1492 }
1493
1494 static void
1495 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1496 {
1497 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1498 encode_string(xdr, fh->size, fh->data);
1499 }
1500
1501 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1502 {
1503 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1504 }
1505
1506 static void encode_open_stateid(struct xdr_stream *xdr,
1507 const struct nfs_open_context *ctx,
1508 const struct nfs_lock_context *l_ctx,
1509 fmode_t fmode,
1510 int zero_seqid)
1511 {
1512 nfs4_stateid stateid;
1513
1514 if (ctx->state != NULL) {
1515 const struct nfs_lockowner *lockowner = NULL;
1516
1517 if (l_ctx != NULL)
1518 lockowner = &l_ctx->lockowner;
1519 nfs4_select_rw_stateid(&stateid, ctx->state,
1520 fmode, lockowner);
1521 if (zero_seqid)
1522 stateid.seqid = 0;
1523 encode_nfs4_stateid(xdr, &stateid);
1524 } else
1525 encode_nfs4_stateid(xdr, &zero_stateid);
1526 }
1527
1528 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1529 {
1530 __be32 *p;
1531
1532 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1533 encode_open_stateid(xdr, args->context, args->lock_context,
1534 FMODE_READ, hdr->minorversion);
1535
1536 p = reserve_space(xdr, 12);
1537 p = xdr_encode_hyper(p, args->offset);
1538 *p = cpu_to_be32(args->count);
1539 }
1540
1541 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1542 {
1543 uint32_t attrs[2] = {
1544 FATTR4_WORD0_RDATTR_ERROR,
1545 FATTR4_WORD1_MOUNTED_ON_FILEID,
1546 };
1547 uint32_t dircount = readdir->count >> 1;
1548 __be32 *p, verf[2];
1549
1550 if (readdir->plus) {
1551 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1552 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1553 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1554 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1555 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1556 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1557 dircount >>= 1;
1558 }
1559 /* Use mounted_on_fileid only if the server supports it */
1560 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1561 attrs[0] |= FATTR4_WORD0_FILEID;
1562
1563 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1564 encode_uint64(xdr, readdir->cookie);
1565 encode_nfs4_verifier(xdr, &readdir->verifier);
1566 p = reserve_space(xdr, 20);
1567 *p++ = cpu_to_be32(dircount);
1568 *p++ = cpu_to_be32(readdir->count);
1569 *p++ = cpu_to_be32(2);
1570
1571 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1572 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1573 memcpy(verf, readdir->verifier.data, sizeof(verf));
1574 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1575 __func__,
1576 (unsigned long long)readdir->cookie,
1577 verf[0], verf[1],
1578 attrs[0] & readdir->bitmask[0],
1579 attrs[1] & readdir->bitmask[1]);
1580 }
1581
1582 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1583 {
1584 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1585 }
1586
1587 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1588 {
1589 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1590 encode_string(xdr, name->len, name->name);
1591 }
1592
1593 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1594 {
1595 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1596 encode_string(xdr, oldname->len, oldname->name);
1597 encode_string(xdr, newname->len, newname->name);
1598 }
1599
1600 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1601 struct compound_hdr *hdr)
1602 {
1603 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1604 encode_uint64(xdr, clid);
1605 }
1606
1607 static void
1608 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1609 {
1610 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1611 }
1612
1613 static void
1614 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1615 {
1616 __be32 *p;
1617
1618 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1619 encode_nfs4_stateid(xdr, &zero_stateid);
1620 p = reserve_space(xdr, 2*4);
1621 *p++ = cpu_to_be32(1);
1622 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1623 p = reserve_space(xdr, 4);
1624 *p = cpu_to_be32(arg->acl_len);
1625 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1626 }
1627
1628 static void
1629 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1630 {
1631 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1632 }
1633
1634 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1635 {
1636 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1637 encode_nfs4_stateid(xdr, &arg->stateid);
1638 encode_attrs(xdr, arg->iap, server);
1639 }
1640
1641 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1642 {
1643 __be32 *p;
1644
1645 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1646 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1647
1648 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1649 p = reserve_space(xdr, 4);
1650 *p = cpu_to_be32(setclientid->sc_prog);
1651 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1652 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1653 p = reserve_space(xdr, 4);
1654 *p = cpu_to_be32(setclientid->sc_cb_ident);
1655 }
1656
1657 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1658 {
1659 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1660 decode_setclientid_confirm_maxsz, hdr);
1661 encode_uint64(xdr, arg->clientid);
1662 encode_nfs4_verifier(xdr, &arg->confirm);
1663 }
1664
1665 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1666 {
1667 __be32 *p;
1668
1669 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1670 encode_open_stateid(xdr, args->context, args->lock_context,
1671 FMODE_WRITE, hdr->minorversion);
1672
1673 p = reserve_space(xdr, 16);
1674 p = xdr_encode_hyper(p, args->offset);
1675 *p++ = cpu_to_be32(args->stable);
1676 *p = cpu_to_be32(args->count);
1677
1678 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1679 }
1680
1681 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1682 {
1683 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1684 encode_nfs4_stateid(xdr, stateid);
1685 }
1686
1687 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1688 {
1689 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1690 encode_string(xdr, name->len, name->name);
1691 }
1692
1693 #if defined(CONFIG_NFS_V4_1)
1694 /* NFSv4.1 operations */
1695 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1696 struct nfs4_session *session,
1697 struct compound_hdr *hdr)
1698 {
1699 __be32 *p;
1700
1701 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1702 decode_bind_conn_to_session_maxsz, hdr);
1703 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1704 p = xdr_reserve_space(xdr, 8);
1705 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1706 *p = 0; /* use_conn_in_rdma_mode = False */
1707 }
1708
1709 static void encode_exchange_id(struct xdr_stream *xdr,
1710 struct nfs41_exchange_id_args *args,
1711 struct compound_hdr *hdr)
1712 {
1713 __be32 *p;
1714 char impl_name[NFS4_OPAQUE_LIMIT];
1715 int len = 0;
1716
1717 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1718 encode_nfs4_verifier(xdr, args->verifier);
1719
1720 encode_string(xdr, args->id_len, args->id);
1721
1722 p = reserve_space(xdr, 12);
1723 *p++ = cpu_to_be32(args->flags);
1724 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1725
1726 if (send_implementation_id &&
1727 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1728 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1729 <= NFS4_OPAQUE_LIMIT + 1)
1730 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1731 utsname()->sysname, utsname()->release,
1732 utsname()->version, utsname()->machine);
1733
1734 if (len > 0) {
1735 *p = cpu_to_be32(1); /* implementation id array length=1 */
1736
1737 encode_string(xdr,
1738 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1739 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1740 encode_string(xdr, len, impl_name);
1741 /* just send zeros for nii_date - the date is in nii_name */
1742 p = reserve_space(xdr, 12);
1743 p = xdr_encode_hyper(p, 0);
1744 *p = cpu_to_be32(0);
1745 } else
1746 *p = cpu_to_be32(0); /* implementation id array length=0 */
1747 }
1748
1749 static void encode_create_session(struct xdr_stream *xdr,
1750 struct nfs41_create_session_args *args,
1751 struct compound_hdr *hdr)
1752 {
1753 __be32 *p;
1754 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1755 uint32_t len;
1756 struct nfs_client *clp = args->client;
1757 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1758 u32 max_resp_sz_cached;
1759
1760 /*
1761 * Assumes OPEN is the biggest non-idempotent compound.
1762 * 2 is the verifier.
1763 */
1764 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1765 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1766
1767 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1768 clp->cl_ipaddr);
1769
1770 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1771 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1772 p = xdr_encode_hyper(p, clp->cl_clientid);
1773 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1774 *p++ = cpu_to_be32(args->flags); /*flags */
1775
1776 /* Fore Channel */
1777 *p++ = cpu_to_be32(0); /* header padding size */
1778 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1779 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1780 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1781 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1782 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1783 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1784
1785 /* Back Channel */
1786 *p++ = cpu_to_be32(0); /* header padding size */
1787 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1788 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1789 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1790 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1791 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1792 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1793
1794 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1795 *p++ = cpu_to_be32(1);
1796 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1797
1798 /* authsys_parms rfc1831 */
1799 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1800 p = xdr_encode_opaque(p, machine_name, len);
1801 *p++ = cpu_to_be32(0); /* UID */
1802 *p++ = cpu_to_be32(0); /* GID */
1803 *p = cpu_to_be32(0); /* No more gids */
1804 }
1805
1806 static void encode_destroy_session(struct xdr_stream *xdr,
1807 struct nfs4_session *session,
1808 struct compound_hdr *hdr)
1809 {
1810 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1811 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1812 }
1813
1814 static void encode_destroy_clientid(struct xdr_stream *xdr,
1815 uint64_t clientid,
1816 struct compound_hdr *hdr)
1817 {
1818 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1819 encode_uint64(xdr, clientid);
1820 }
1821
1822 static void encode_reclaim_complete(struct xdr_stream *xdr,
1823 struct nfs41_reclaim_complete_args *args,
1824 struct compound_hdr *hdr)
1825 {
1826 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1827 encode_uint32(xdr, args->one_fs);
1828 }
1829 #endif /* CONFIG_NFS_V4_1 */
1830
1831 static void encode_sequence(struct xdr_stream *xdr,
1832 const struct nfs4_sequence_args *args,
1833 struct compound_hdr *hdr)
1834 {
1835 #if defined(CONFIG_NFS_V4_1)
1836 struct nfs4_session *session = args->sa_session;
1837 struct nfs4_slot_table *tp;
1838 struct nfs4_slot *slot;
1839 __be32 *p;
1840
1841 if (!session)
1842 return;
1843
1844 tp = &session->fc_slot_table;
1845
1846 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1847 slot = tp->slots + args->sa_slotid;
1848
1849 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1850
1851 /*
1852 * Sessionid + seqid + slotid + max slotid + cache_this
1853 */
1854 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1855 "max_slotid=%d cache_this=%d\n",
1856 __func__,
1857 ((u32 *)session->sess_id.data)[0],
1858 ((u32 *)session->sess_id.data)[1],
1859 ((u32 *)session->sess_id.data)[2],
1860 ((u32 *)session->sess_id.data)[3],
1861 slot->seq_nr, args->sa_slotid,
1862 tp->highest_used_slotid, args->sa_cache_this);
1863 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1864 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1865 *p++ = cpu_to_be32(slot->seq_nr);
1866 *p++ = cpu_to_be32(args->sa_slotid);
1867 *p++ = cpu_to_be32(tp->highest_used_slotid);
1868 *p = cpu_to_be32(args->sa_cache_this);
1869 #endif /* CONFIG_NFS_V4_1 */
1870 }
1871
1872 #ifdef CONFIG_NFS_V4_1
1873 static void
1874 encode_getdevicelist(struct xdr_stream *xdr,
1875 const struct nfs4_getdevicelist_args *args,
1876 struct compound_hdr *hdr)
1877 {
1878 __be32 *p;
1879 nfs4_verifier dummy = {
1880 .data = "dummmmmy",
1881 };
1882
1883 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1884 p = reserve_space(xdr, 16);
1885 *p++ = cpu_to_be32(args->layoutclass);
1886 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1887 xdr_encode_hyper(p, 0ULL); /* cookie */
1888 encode_nfs4_verifier(xdr, &dummy);
1889 }
1890
1891 static void
1892 encode_getdeviceinfo(struct xdr_stream *xdr,
1893 const struct nfs4_getdeviceinfo_args *args,
1894 struct compound_hdr *hdr)
1895 {
1896 __be32 *p;
1897
1898 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1899 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1900 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1901 NFS4_DEVICEID4_SIZE);
1902 *p++ = cpu_to_be32(args->pdev->layout_type);
1903 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1904 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1905 }
1906
1907 static void
1908 encode_layoutget(struct xdr_stream *xdr,
1909 const struct nfs4_layoutget_args *args,
1910 struct compound_hdr *hdr)
1911 {
1912 __be32 *p;
1913
1914 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1915 p = reserve_space(xdr, 36);
1916 *p++ = cpu_to_be32(0); /* Signal layout available */
1917 *p++ = cpu_to_be32(args->type);
1918 *p++ = cpu_to_be32(args->range.iomode);
1919 p = xdr_encode_hyper(p, args->range.offset);
1920 p = xdr_encode_hyper(p, args->range.length);
1921 p = xdr_encode_hyper(p, args->minlength);
1922 encode_nfs4_stateid(xdr, &args->stateid);
1923 encode_uint32(xdr, args->maxcount);
1924
1925 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1926 __func__,
1927 args->type,
1928 args->range.iomode,
1929 (unsigned long)args->range.offset,
1930 (unsigned long)args->range.length,
1931 args->maxcount);
1932 }
1933
1934 static int
1935 encode_layoutcommit(struct xdr_stream *xdr,
1936 struct inode *inode,
1937 const struct nfs4_layoutcommit_args *args,
1938 struct compound_hdr *hdr)
1939 {
1940 __be32 *p;
1941
1942 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1943 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1944
1945 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1946 p = reserve_space(xdr, 20);
1947 /* Only whole file layouts */
1948 p = xdr_encode_hyper(p, 0); /* offset */
1949 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1950 *p = cpu_to_be32(0); /* reclaim */
1951 encode_nfs4_stateid(xdr, &args->stateid);
1952 p = reserve_space(xdr, 20);
1953 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1954 p = xdr_encode_hyper(p, args->lastbytewritten);
1955 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1956 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1957
1958 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1959 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1960 NFS_I(inode)->layout, xdr, args);
1961 else
1962 encode_uint32(xdr, 0); /* no layout-type payload */
1963
1964 return 0;
1965 }
1966
1967 static void
1968 encode_layoutreturn(struct xdr_stream *xdr,
1969 const struct nfs4_layoutreturn_args *args,
1970 struct compound_hdr *hdr)
1971 {
1972 __be32 *p;
1973
1974 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1975 p = reserve_space(xdr, 16);
1976 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1977 *p++ = cpu_to_be32(args->layout_type);
1978 *p++ = cpu_to_be32(IOMODE_ANY);
1979 *p = cpu_to_be32(RETURN_FILE);
1980 p = reserve_space(xdr, 16);
1981 p = xdr_encode_hyper(p, 0);
1982 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1983 spin_lock(&args->inode->i_lock);
1984 encode_nfs4_stateid(xdr, &args->stateid);
1985 spin_unlock(&args->inode->i_lock);
1986 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1987 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1988 NFS_I(args->inode)->layout, xdr, args);
1989 } else
1990 encode_uint32(xdr, 0);
1991 }
1992
1993 static int
1994 encode_secinfo_no_name(struct xdr_stream *xdr,
1995 const struct nfs41_secinfo_no_name_args *args,
1996 struct compound_hdr *hdr)
1997 {
1998 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
1999 encode_uint32(xdr, args->style);
2000 return 0;
2001 }
2002
2003 static void encode_test_stateid(struct xdr_stream *xdr,
2004 struct nfs41_test_stateid_args *args,
2005 struct compound_hdr *hdr)
2006 {
2007 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2008 encode_uint32(xdr, 1);
2009 encode_nfs4_stateid(xdr, args->stateid);
2010 }
2011
2012 static void encode_free_stateid(struct xdr_stream *xdr,
2013 struct nfs41_free_stateid_args *args,
2014 struct compound_hdr *hdr)
2015 {
2016 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2017 encode_nfs4_stateid(xdr, args->stateid);
2018 }
2019 #endif /* CONFIG_NFS_V4_1 */
2020
2021 /*
2022 * END OF "GENERIC" ENCODE ROUTINES.
2023 */
2024
2025 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2026 {
2027 #if defined(CONFIG_NFS_V4_1)
2028 if (args->sa_session)
2029 return args->sa_session->clp->cl_mvops->minor_version;
2030 #endif /* CONFIG_NFS_V4_1 */
2031 return 0;
2032 }
2033
2034 /*
2035 * Encode an ACCESS request
2036 */
2037 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2038 const struct nfs4_accessargs *args)
2039 {
2040 struct compound_hdr hdr = {
2041 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2042 };
2043
2044 encode_compound_hdr(xdr, req, &hdr);
2045 encode_sequence(xdr, &args->seq_args, &hdr);
2046 encode_putfh(xdr, args->fh, &hdr);
2047 encode_access(xdr, args->access, &hdr);
2048 encode_getfattr(xdr, args->bitmask, &hdr);
2049 encode_nops(&hdr);
2050 }
2051
2052 /*
2053 * Encode LOOKUP request
2054 */
2055 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2056 const struct nfs4_lookup_arg *args)
2057 {
2058 struct compound_hdr hdr = {
2059 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2060 };
2061
2062 encode_compound_hdr(xdr, req, &hdr);
2063 encode_sequence(xdr, &args->seq_args, &hdr);
2064 encode_putfh(xdr, args->dir_fh, &hdr);
2065 encode_lookup(xdr, args->name, &hdr);
2066 encode_getfh(xdr, &hdr);
2067 encode_getfattr(xdr, args->bitmask, &hdr);
2068 encode_nops(&hdr);
2069 }
2070
2071 /*
2072 * Encode LOOKUP_ROOT request
2073 */
2074 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2075 struct xdr_stream *xdr,
2076 const struct nfs4_lookup_root_arg *args)
2077 {
2078 struct compound_hdr hdr = {
2079 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2080 };
2081
2082 encode_compound_hdr(xdr, req, &hdr);
2083 encode_sequence(xdr, &args->seq_args, &hdr);
2084 encode_putrootfh(xdr, &hdr);
2085 encode_getfh(xdr, &hdr);
2086 encode_getfattr(xdr, args->bitmask, &hdr);
2087 encode_nops(&hdr);
2088 }
2089
2090 /*
2091 * Encode REMOVE request
2092 */
2093 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2094 const struct nfs_removeargs *args)
2095 {
2096 struct compound_hdr hdr = {
2097 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2098 };
2099
2100 encode_compound_hdr(xdr, req, &hdr);
2101 encode_sequence(xdr, &args->seq_args, &hdr);
2102 encode_putfh(xdr, args->fh, &hdr);
2103 encode_remove(xdr, &args->name, &hdr);
2104 encode_nops(&hdr);
2105 }
2106
2107 /*
2108 * Encode RENAME request
2109 */
2110 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2111 const struct nfs_renameargs *args)
2112 {
2113 struct compound_hdr hdr = {
2114 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2115 };
2116
2117 encode_compound_hdr(xdr, req, &hdr);
2118 encode_sequence(xdr, &args->seq_args, &hdr);
2119 encode_putfh(xdr, args->old_dir, &hdr);
2120 encode_savefh(xdr, &hdr);
2121 encode_putfh(xdr, args->new_dir, &hdr);
2122 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2123 encode_nops(&hdr);
2124 }
2125
2126 /*
2127 * Encode LINK request
2128 */
2129 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2130 const struct nfs4_link_arg *args)
2131 {
2132 struct compound_hdr hdr = {
2133 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2134 };
2135
2136 encode_compound_hdr(xdr, req, &hdr);
2137 encode_sequence(xdr, &args->seq_args, &hdr);
2138 encode_putfh(xdr, args->fh, &hdr);
2139 encode_savefh(xdr, &hdr);
2140 encode_putfh(xdr, args->dir_fh, &hdr);
2141 encode_link(xdr, args->name, &hdr);
2142 encode_restorefh(xdr, &hdr);
2143 encode_getfattr(xdr, args->bitmask, &hdr);
2144 encode_nops(&hdr);
2145 }
2146
2147 /*
2148 * Encode CREATE request
2149 */
2150 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2151 const struct nfs4_create_arg *args)
2152 {
2153 struct compound_hdr hdr = {
2154 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2155 };
2156
2157 encode_compound_hdr(xdr, req, &hdr);
2158 encode_sequence(xdr, &args->seq_args, &hdr);
2159 encode_putfh(xdr, args->dir_fh, &hdr);
2160 encode_create(xdr, args, &hdr);
2161 encode_getfh(xdr, &hdr);
2162 encode_getfattr(xdr, args->bitmask, &hdr);
2163 encode_nops(&hdr);
2164 }
2165
2166 /*
2167 * Encode SYMLINK request
2168 */
2169 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2170 const struct nfs4_create_arg *args)
2171 {
2172 nfs4_xdr_enc_create(req, xdr, args);
2173 }
2174
2175 /*
2176 * Encode GETATTR request
2177 */
2178 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2179 const struct nfs4_getattr_arg *args)
2180 {
2181 struct compound_hdr hdr = {
2182 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2183 };
2184
2185 encode_compound_hdr(xdr, req, &hdr);
2186 encode_sequence(xdr, &args->seq_args, &hdr);
2187 encode_putfh(xdr, args->fh, &hdr);
2188 encode_getfattr(xdr, args->bitmask, &hdr);
2189 encode_nops(&hdr);
2190 }
2191
2192 /*
2193 * Encode a CLOSE request
2194 */
2195 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2196 struct nfs_closeargs *args)
2197 {
2198 struct compound_hdr hdr = {
2199 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2200 };
2201
2202 encode_compound_hdr(xdr, req, &hdr);
2203 encode_sequence(xdr, &args->seq_args, &hdr);
2204 encode_putfh(xdr, args->fh, &hdr);
2205 encode_close(xdr, args, &hdr);
2206 encode_getfattr(xdr, args->bitmask, &hdr);
2207 encode_nops(&hdr);
2208 }
2209
2210 /*
2211 * Encode an OPEN request
2212 */
2213 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2214 struct nfs_openargs *args)
2215 {
2216 struct compound_hdr hdr = {
2217 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2218 };
2219
2220 encode_compound_hdr(xdr, req, &hdr);
2221 encode_sequence(xdr, &args->seq_args, &hdr);
2222 encode_putfh(xdr, args->fh, &hdr);
2223 encode_open(xdr, args, &hdr);
2224 encode_getfh(xdr, &hdr);
2225 if (args->access)
2226 encode_access(xdr, args->access, &hdr);
2227 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2228 encode_nops(&hdr);
2229 }
2230
2231 /*
2232 * Encode an OPEN_CONFIRM request
2233 */
2234 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2235 struct xdr_stream *xdr,
2236 struct nfs_open_confirmargs *args)
2237 {
2238 struct compound_hdr hdr = {
2239 .nops = 0,
2240 };
2241
2242 encode_compound_hdr(xdr, req, &hdr);
2243 encode_putfh(xdr, args->fh, &hdr);
2244 encode_open_confirm(xdr, args, &hdr);
2245 encode_nops(&hdr);
2246 }
2247
2248 /*
2249 * Encode an OPEN request with no attributes.
2250 */
2251 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2252 struct xdr_stream *xdr,
2253 struct nfs_openargs *args)
2254 {
2255 struct compound_hdr hdr = {
2256 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2257 };
2258
2259 encode_compound_hdr(xdr, req, &hdr);
2260 encode_sequence(xdr, &args->seq_args, &hdr);
2261 encode_putfh(xdr, args->fh, &hdr);
2262 encode_open(xdr, args, &hdr);
2263 if (args->access)
2264 encode_access(xdr, args->access, &hdr);
2265 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2266 encode_nops(&hdr);
2267 }
2268
2269 /*
2270 * Encode an OPEN_DOWNGRADE request
2271 */
2272 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2273 struct xdr_stream *xdr,
2274 struct nfs_closeargs *args)
2275 {
2276 struct compound_hdr hdr = {
2277 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2278 };
2279
2280 encode_compound_hdr(xdr, req, &hdr);
2281 encode_sequence(xdr, &args->seq_args, &hdr);
2282 encode_putfh(xdr, args->fh, &hdr);
2283 encode_open_downgrade(xdr, args, &hdr);
2284 encode_getfattr(xdr, args->bitmask, &hdr);
2285 encode_nops(&hdr);
2286 }
2287
2288 /*
2289 * Encode a LOCK request
2290 */
2291 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2292 struct nfs_lock_args *args)
2293 {
2294 struct compound_hdr hdr = {
2295 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2296 };
2297
2298 encode_compound_hdr(xdr, req, &hdr);
2299 encode_sequence(xdr, &args->seq_args, &hdr);
2300 encode_putfh(xdr, args->fh, &hdr);
2301 encode_lock(xdr, args, &hdr);
2302 encode_nops(&hdr);
2303 }
2304
2305 /*
2306 * Encode a LOCKT request
2307 */
2308 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2309 struct nfs_lockt_args *args)
2310 {
2311 struct compound_hdr hdr = {
2312 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2313 };
2314
2315 encode_compound_hdr(xdr, req, &hdr);
2316 encode_sequence(xdr, &args->seq_args, &hdr);
2317 encode_putfh(xdr, args->fh, &hdr);
2318 encode_lockt(xdr, args, &hdr);
2319 encode_nops(&hdr);
2320 }
2321
2322 /*
2323 * Encode a LOCKU request
2324 */
2325 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2326 struct nfs_locku_args *args)
2327 {
2328 struct compound_hdr hdr = {
2329 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2330 };
2331
2332 encode_compound_hdr(xdr, req, &hdr);
2333 encode_sequence(xdr, &args->seq_args, &hdr);
2334 encode_putfh(xdr, args->fh, &hdr);
2335 encode_locku(xdr, args, &hdr);
2336 encode_nops(&hdr);
2337 }
2338
2339 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2340 struct xdr_stream *xdr,
2341 struct nfs_release_lockowner_args *args)
2342 {
2343 struct compound_hdr hdr = {
2344 .minorversion = 0,
2345 };
2346
2347 encode_compound_hdr(xdr, req, &hdr);
2348 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2349 encode_nops(&hdr);
2350 }
2351
2352 /*
2353 * Encode a READLINK request
2354 */
2355 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2356 const struct nfs4_readlink *args)
2357 {
2358 struct compound_hdr hdr = {
2359 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2360 };
2361
2362 encode_compound_hdr(xdr, req, &hdr);
2363 encode_sequence(xdr, &args->seq_args, &hdr);
2364 encode_putfh(xdr, args->fh, &hdr);
2365 encode_readlink(xdr, args, req, &hdr);
2366
2367 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2368 args->pgbase, args->pglen);
2369 encode_nops(&hdr);
2370 }
2371
2372 /*
2373 * Encode a READDIR request
2374 */
2375 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2376 const struct nfs4_readdir_arg *args)
2377 {
2378 struct compound_hdr hdr = {
2379 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2380 };
2381
2382 encode_compound_hdr(xdr, req, &hdr);
2383 encode_sequence(xdr, &args->seq_args, &hdr);
2384 encode_putfh(xdr, args->fh, &hdr);
2385 encode_readdir(xdr, args, req, &hdr);
2386
2387 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2388 args->pgbase, args->count);
2389 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2390 __func__, hdr.replen << 2, args->pages,
2391 args->pgbase, args->count);
2392 encode_nops(&hdr);
2393 }
2394
2395 /*
2396 * Encode a READ request
2397 */
2398 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2399 struct nfs_readargs *args)
2400 {
2401 struct compound_hdr hdr = {
2402 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2403 };
2404
2405 encode_compound_hdr(xdr, req, &hdr);
2406 encode_sequence(xdr, &args->seq_args, &hdr);
2407 encode_putfh(xdr, args->fh, &hdr);
2408 encode_read(xdr, args, &hdr);
2409
2410 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2411 args->pages, args->pgbase, args->count);
2412 req->rq_rcv_buf.flags |= XDRBUF_READ;
2413 encode_nops(&hdr);
2414 }
2415
2416 /*
2417 * Encode an SETATTR request
2418 */
2419 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2420 struct nfs_setattrargs *args)
2421 {
2422 struct compound_hdr hdr = {
2423 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2424 };
2425
2426 encode_compound_hdr(xdr, req, &hdr);
2427 encode_sequence(xdr, &args->seq_args, &hdr);
2428 encode_putfh(xdr, args->fh, &hdr);
2429 encode_setattr(xdr, args, args->server, &hdr);
2430 encode_getfattr(xdr, args->bitmask, &hdr);
2431 encode_nops(&hdr);
2432 }
2433
2434 /*
2435 * Encode a GETACL request
2436 */
2437 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2438 struct nfs_getaclargs *args)
2439 {
2440 struct compound_hdr hdr = {
2441 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2442 };
2443 uint32_t replen;
2444
2445 encode_compound_hdr(xdr, req, &hdr);
2446 encode_sequence(xdr, &args->seq_args, &hdr);
2447 encode_putfh(xdr, args->fh, &hdr);
2448 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2449 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2450
2451 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2452 args->acl_pages, args->acl_pgbase, args->acl_len);
2453
2454 encode_nops(&hdr);
2455 }
2456
2457 /*
2458 * Encode a WRITE request
2459 */
2460 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2461 struct nfs_writeargs *args)
2462 {
2463 struct compound_hdr hdr = {
2464 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2465 };
2466
2467 encode_compound_hdr(xdr, req, &hdr);
2468 encode_sequence(xdr, &args->seq_args, &hdr);
2469 encode_putfh(xdr, args->fh, &hdr);
2470 encode_write(xdr, args, &hdr);
2471 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2472 if (args->bitmask)
2473 encode_getfattr(xdr, args->bitmask, &hdr);
2474 encode_nops(&hdr);
2475 }
2476
2477 /*
2478 * a COMMIT request
2479 */
2480 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2481 struct nfs_commitargs *args)
2482 {
2483 struct compound_hdr hdr = {
2484 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2485 };
2486
2487 encode_compound_hdr(xdr, req, &hdr);
2488 encode_sequence(xdr, &args->seq_args, &hdr);
2489 encode_putfh(xdr, args->fh, &hdr);
2490 encode_commit(xdr, args, &hdr);
2491 encode_nops(&hdr);
2492 }
2493
2494 /*
2495 * FSINFO request
2496 */
2497 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2498 struct nfs4_fsinfo_arg *args)
2499 {
2500 struct compound_hdr hdr = {
2501 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2502 };
2503
2504 encode_compound_hdr(xdr, req, &hdr);
2505 encode_sequence(xdr, &args->seq_args, &hdr);
2506 encode_putfh(xdr, args->fh, &hdr);
2507 encode_fsinfo(xdr, args->bitmask, &hdr);
2508 encode_nops(&hdr);
2509 }
2510
2511 /*
2512 * a PATHCONF request
2513 */
2514 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2515 const struct nfs4_pathconf_arg *args)
2516 {
2517 struct compound_hdr hdr = {
2518 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2519 };
2520
2521 encode_compound_hdr(xdr, req, &hdr);
2522 encode_sequence(xdr, &args->seq_args, &hdr);
2523 encode_putfh(xdr, args->fh, &hdr);
2524 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2525 &hdr);
2526 encode_nops(&hdr);
2527 }
2528
2529 /*
2530 * a STATFS request
2531 */
2532 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2533 const struct nfs4_statfs_arg *args)
2534 {
2535 struct compound_hdr hdr = {
2536 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2537 };
2538
2539 encode_compound_hdr(xdr, req, &hdr);
2540 encode_sequence(xdr, &args->seq_args, &hdr);
2541 encode_putfh(xdr, args->fh, &hdr);
2542 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2543 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2544 encode_nops(&hdr);
2545 }
2546
2547 /*
2548 * GETATTR_BITMAP request
2549 */
2550 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2551 struct xdr_stream *xdr,
2552 struct nfs4_server_caps_arg *args)
2553 {
2554 struct compound_hdr hdr = {
2555 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2556 };
2557
2558 encode_compound_hdr(xdr, req, &hdr);
2559 encode_sequence(xdr, &args->seq_args, &hdr);
2560 encode_putfh(xdr, args->fhandle, &hdr);
2561 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2562 FATTR4_WORD0_FH_EXPIRE_TYPE|
2563 FATTR4_WORD0_LINK_SUPPORT|
2564 FATTR4_WORD0_SYMLINK_SUPPORT|
2565 FATTR4_WORD0_ACLSUPPORT, &hdr);
2566 encode_nops(&hdr);
2567 }
2568
2569 /*
2570 * a RENEW request
2571 */
2572 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2573 struct nfs_client *clp)
2574 {
2575 struct compound_hdr hdr = {
2576 .nops = 0,
2577 };
2578
2579 encode_compound_hdr(xdr, req, &hdr);
2580 encode_renew(xdr, clp->cl_clientid, &hdr);
2581 encode_nops(&hdr);
2582 }
2583
2584 /*
2585 * a SETCLIENTID request
2586 */
2587 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2588 struct xdr_stream *xdr,
2589 struct nfs4_setclientid *sc)
2590 {
2591 struct compound_hdr hdr = {
2592 .nops = 0,
2593 };
2594
2595 encode_compound_hdr(xdr, req, &hdr);
2596 encode_setclientid(xdr, sc, &hdr);
2597 encode_nops(&hdr);
2598 }
2599
2600 /*
2601 * a SETCLIENTID_CONFIRM request
2602 */
2603 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2604 struct xdr_stream *xdr,
2605 struct nfs4_setclientid_res *arg)
2606 {
2607 struct compound_hdr hdr = {
2608 .nops = 0,
2609 };
2610 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2611
2612 encode_compound_hdr(xdr, req, &hdr);
2613 encode_setclientid_confirm(xdr, arg, &hdr);
2614 encode_putrootfh(xdr, &hdr);
2615 encode_fsinfo(xdr, lease_bitmap, &hdr);
2616 encode_nops(&hdr);
2617 }
2618
2619 /*
2620 * DELEGRETURN request
2621 */
2622 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2623 struct xdr_stream *xdr,
2624 const struct nfs4_delegreturnargs *args)
2625 {
2626 struct compound_hdr hdr = {
2627 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2628 };
2629
2630 encode_compound_hdr(xdr, req, &hdr);
2631 encode_sequence(xdr, &args->seq_args, &hdr);
2632 encode_putfh(xdr, args->fhandle, &hdr);
2633 encode_getfattr(xdr, args->bitmask, &hdr);
2634 encode_delegreturn(xdr, args->stateid, &hdr);
2635 encode_nops(&hdr);
2636 }
2637
2638 /*
2639 * Encode FS_LOCATIONS request
2640 */
2641 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2642 struct xdr_stream *xdr,
2643 struct nfs4_fs_locations_arg *args)
2644 {
2645 struct compound_hdr hdr = {
2646 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2647 };
2648 uint32_t replen;
2649
2650 encode_compound_hdr(xdr, req, &hdr);
2651 encode_sequence(xdr, &args->seq_args, &hdr);
2652 encode_putfh(xdr, args->dir_fh, &hdr);
2653 encode_lookup(xdr, args->name, &hdr);
2654 replen = hdr.replen; /* get the attribute into args->page */
2655 encode_fs_locations(xdr, args->bitmask, &hdr);
2656
2657 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2658 0, PAGE_SIZE);
2659 encode_nops(&hdr);
2660 }
2661
2662 /*
2663 * Encode SECINFO request
2664 */
2665 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2666 struct xdr_stream *xdr,
2667 struct nfs4_secinfo_arg *args)
2668 {
2669 struct compound_hdr hdr = {
2670 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2671 };
2672
2673 encode_compound_hdr(xdr, req, &hdr);
2674 encode_sequence(xdr, &args->seq_args, &hdr);
2675 encode_putfh(xdr, args->dir_fh, &hdr);
2676 encode_secinfo(xdr, args->name, &hdr);
2677 encode_nops(&hdr);
2678 }
2679
2680 #if defined(CONFIG_NFS_V4_1)
2681 /*
2682 * BIND_CONN_TO_SESSION request
2683 */
2684 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2685 struct xdr_stream *xdr,
2686 struct nfs_client *clp)
2687 {
2688 struct compound_hdr hdr = {
2689 .minorversion = clp->cl_mvops->minor_version,
2690 };
2691
2692 encode_compound_hdr(xdr, req, &hdr);
2693 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2694 encode_nops(&hdr);
2695 }
2696
2697 /*
2698 * EXCHANGE_ID request
2699 */
2700 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2701 struct xdr_stream *xdr,
2702 struct nfs41_exchange_id_args *args)
2703 {
2704 struct compound_hdr hdr = {
2705 .minorversion = args->client->cl_mvops->minor_version,
2706 };
2707
2708 encode_compound_hdr(xdr, req, &hdr);
2709 encode_exchange_id(xdr, args, &hdr);
2710 encode_nops(&hdr);
2711 }
2712
2713 /*
2714 * a CREATE_SESSION request
2715 */
2716 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2717 struct xdr_stream *xdr,
2718 struct nfs41_create_session_args *args)
2719 {
2720 struct compound_hdr hdr = {
2721 .minorversion = args->client->cl_mvops->minor_version,
2722 };
2723
2724 encode_compound_hdr(xdr, req, &hdr);
2725 encode_create_session(xdr, args, &hdr);
2726 encode_nops(&hdr);
2727 }
2728
2729 /*
2730 * a DESTROY_SESSION request
2731 */
2732 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2733 struct xdr_stream *xdr,
2734 struct nfs4_session *session)
2735 {
2736 struct compound_hdr hdr = {
2737 .minorversion = session->clp->cl_mvops->minor_version,
2738 };
2739
2740 encode_compound_hdr(xdr, req, &hdr);
2741 encode_destroy_session(xdr, session, &hdr);
2742 encode_nops(&hdr);
2743 }
2744
2745 /*
2746 * a DESTROY_CLIENTID request
2747 */
2748 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2749 struct xdr_stream *xdr,
2750 struct nfs_client *clp)
2751 {
2752 struct compound_hdr hdr = {
2753 .minorversion = clp->cl_mvops->minor_version,
2754 };
2755
2756 encode_compound_hdr(xdr, req, &hdr);
2757 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2758 encode_nops(&hdr);
2759 }
2760
2761 /*
2762 * a SEQUENCE request
2763 */
2764 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2765 struct nfs4_sequence_args *args)
2766 {
2767 struct compound_hdr hdr = {
2768 .minorversion = nfs4_xdr_minorversion(args),
2769 };
2770
2771 encode_compound_hdr(xdr, req, &hdr);
2772 encode_sequence(xdr, args, &hdr);
2773 encode_nops(&hdr);
2774 }
2775
2776 /*
2777 * a GET_LEASE_TIME request
2778 */
2779 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2780 struct xdr_stream *xdr,
2781 struct nfs4_get_lease_time_args *args)
2782 {
2783 struct compound_hdr hdr = {
2784 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2785 };
2786 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2787
2788 encode_compound_hdr(xdr, req, &hdr);
2789 encode_sequence(xdr, &args->la_seq_args, &hdr);
2790 encode_putrootfh(xdr, &hdr);
2791 encode_fsinfo(xdr, lease_bitmap, &hdr);
2792 encode_nops(&hdr);
2793 }
2794
2795 /*
2796 * a RECLAIM_COMPLETE request
2797 */
2798 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2799 struct xdr_stream *xdr,
2800 struct nfs41_reclaim_complete_args *args)
2801 {
2802 struct compound_hdr hdr = {
2803 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2804 };
2805
2806 encode_compound_hdr(xdr, req, &hdr);
2807 encode_sequence(xdr, &args->seq_args, &hdr);
2808 encode_reclaim_complete(xdr, args, &hdr);
2809 encode_nops(&hdr);
2810 }
2811
2812 /*
2813 * Encode GETDEVICELIST request
2814 */
2815 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2816 struct xdr_stream *xdr,
2817 struct nfs4_getdevicelist_args *args)
2818 {
2819 struct compound_hdr hdr = {
2820 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2821 };
2822
2823 encode_compound_hdr(xdr, req, &hdr);
2824 encode_sequence(xdr, &args->seq_args, &hdr);
2825 encode_putfh(xdr, args->fh, &hdr);
2826 encode_getdevicelist(xdr, args, &hdr);
2827 encode_nops(&hdr);
2828 }
2829
2830 /*
2831 * Encode GETDEVICEINFO request
2832 */
2833 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2834 struct xdr_stream *xdr,
2835 struct nfs4_getdeviceinfo_args *args)
2836 {
2837 struct compound_hdr hdr = {
2838 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2839 };
2840
2841 encode_compound_hdr(xdr, req, &hdr);
2842 encode_sequence(xdr, &args->seq_args, &hdr);
2843 encode_getdeviceinfo(xdr, args, &hdr);
2844
2845 /* set up reply kvec. Subtract notification bitmap max size (2)
2846 * so that notification bitmap is put in xdr_buf tail */
2847 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2848 args->pdev->pages, args->pdev->pgbase,
2849 args->pdev->pglen);
2850
2851 encode_nops(&hdr);
2852 }
2853
2854 /*
2855 * Encode LAYOUTGET request
2856 */
2857 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2858 struct xdr_stream *xdr,
2859 struct nfs4_layoutget_args *args)
2860 {
2861 struct compound_hdr hdr = {
2862 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2863 };
2864
2865 encode_compound_hdr(xdr, req, &hdr);
2866 encode_sequence(xdr, &args->seq_args, &hdr);
2867 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2868 encode_layoutget(xdr, args, &hdr);
2869
2870 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2871 args->layout.pages, 0, args->layout.pglen);
2872
2873 encode_nops(&hdr);
2874 }
2875
2876 /*
2877 * Encode LAYOUTCOMMIT request
2878 */
2879 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2880 struct xdr_stream *xdr,
2881 struct nfs4_layoutcommit_args *args)
2882 {
2883 struct nfs4_layoutcommit_data *data =
2884 container_of(args, struct nfs4_layoutcommit_data, args);
2885 struct compound_hdr hdr = {
2886 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2887 };
2888
2889 encode_compound_hdr(xdr, req, &hdr);
2890 encode_sequence(xdr, &args->seq_args, &hdr);
2891 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2892 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2893 encode_getfattr(xdr, args->bitmask, &hdr);
2894 encode_nops(&hdr);
2895 }
2896
2897 /*
2898 * Encode LAYOUTRETURN request
2899 */
2900 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2901 struct xdr_stream *xdr,
2902 struct nfs4_layoutreturn_args *args)
2903 {
2904 struct compound_hdr hdr = {
2905 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2906 };
2907
2908 encode_compound_hdr(xdr, req, &hdr);
2909 encode_sequence(xdr, &args->seq_args, &hdr);
2910 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2911 encode_layoutreturn(xdr, args, &hdr);
2912 encode_nops(&hdr);
2913 }
2914
2915 /*
2916 * Encode SECINFO_NO_NAME request
2917 */
2918 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2919 struct xdr_stream *xdr,
2920 struct nfs41_secinfo_no_name_args *args)
2921 {
2922 struct compound_hdr hdr = {
2923 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2924 };
2925
2926 encode_compound_hdr(xdr, req, &hdr);
2927 encode_sequence(xdr, &args->seq_args, &hdr);
2928 encode_putrootfh(xdr, &hdr);
2929 encode_secinfo_no_name(xdr, args, &hdr);
2930 encode_nops(&hdr);
2931 return 0;
2932 }
2933
2934 /*
2935 * Encode TEST_STATEID request
2936 */
2937 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2938 struct xdr_stream *xdr,
2939 struct nfs41_test_stateid_args *args)
2940 {
2941 struct compound_hdr hdr = {
2942 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2943 };
2944
2945 encode_compound_hdr(xdr, req, &hdr);
2946 encode_sequence(xdr, &args->seq_args, &hdr);
2947 encode_test_stateid(xdr, args, &hdr);
2948 encode_nops(&hdr);
2949 }
2950
2951 /*
2952 * Encode FREE_STATEID request
2953 */
2954 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2955 struct xdr_stream *xdr,
2956 struct nfs41_free_stateid_args *args)
2957 {
2958 struct compound_hdr hdr = {
2959 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2960 };
2961
2962 encode_compound_hdr(xdr, req, &hdr);
2963 encode_sequence(xdr, &args->seq_args, &hdr);
2964 encode_free_stateid(xdr, args, &hdr);
2965 encode_nops(&hdr);
2966 }
2967 #endif /* CONFIG_NFS_V4_1 */
2968
2969 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2970 {
2971 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2972 "Remaining buffer length is %tu words.\n",
2973 func, xdr->end - xdr->p);
2974 }
2975
2976 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2977 {
2978 __be32 *p;
2979
2980 p = xdr_inline_decode(xdr, 4);
2981 if (unlikely(!p))
2982 goto out_overflow;
2983 *len = be32_to_cpup(p);
2984 p = xdr_inline_decode(xdr, *len);
2985 if (unlikely(!p))
2986 goto out_overflow;
2987 *string = (char *)p;
2988 return 0;
2989 out_overflow:
2990 print_overflow_msg(__func__, xdr);
2991 return -EIO;
2992 }
2993
2994 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2995 {
2996 __be32 *p;
2997
2998 p = xdr_inline_decode(xdr, 8);
2999 if (unlikely(!p))
3000 goto out_overflow;
3001 hdr->status = be32_to_cpup(p++);
3002 hdr->taglen = be32_to_cpup(p);
3003
3004 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3005 if (unlikely(!p))
3006 goto out_overflow;
3007 hdr->tag = (char *)p;
3008 p += XDR_QUADLEN(hdr->taglen);
3009 hdr->nops = be32_to_cpup(p);
3010 if (unlikely(hdr->nops < 1))
3011 return nfs4_stat_to_errno(hdr->status);
3012 return 0;
3013 out_overflow:
3014 print_overflow_msg(__func__, xdr);
3015 return -EIO;
3016 }
3017
3018 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3019 {
3020 __be32 *p;
3021 uint32_t opnum;
3022 int32_t nfserr;
3023
3024 p = xdr_inline_decode(xdr, 8);
3025 if (unlikely(!p))
3026 goto out_overflow;
3027 opnum = be32_to_cpup(p++);
3028 if (opnum != expected) {
3029 dprintk("nfs: Server returned operation"
3030 " %d but we issued a request for %d\n",
3031 opnum, expected);
3032 return -EIO;
3033 }
3034 nfserr = be32_to_cpup(p);
3035 if (nfserr != NFS_OK)
3036 return nfs4_stat_to_errno(nfserr);
3037 return 0;
3038 out_overflow:
3039 print_overflow_msg(__func__, xdr);
3040 return -EIO;
3041 }
3042
3043 /* Dummy routine */
3044 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3045 {
3046 __be32 *p;
3047 unsigned int strlen;
3048 char *str;
3049
3050 p = xdr_inline_decode(xdr, 12);
3051 if (likely(p))
3052 return decode_opaque_inline(xdr, &strlen, &str);
3053 print_overflow_msg(__func__, xdr);
3054 return -EIO;
3055 }
3056
3057 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3058 {
3059 uint32_t bmlen;
3060 __be32 *p;
3061
3062 p = xdr_inline_decode(xdr, 4);
3063 if (unlikely(!p))
3064 goto out_overflow;
3065 bmlen = be32_to_cpup(p);
3066
3067 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3068 p = xdr_inline_decode(xdr, (bmlen << 2));
3069 if (unlikely(!p))
3070 goto out_overflow;
3071 if (bmlen > 0) {
3072 bitmap[0] = be32_to_cpup(p++);
3073 if (bmlen > 1) {
3074 bitmap[1] = be32_to_cpup(p++);
3075 if (bmlen > 2)
3076 bitmap[2] = be32_to_cpup(p);
3077 }
3078 }
3079 return 0;
3080 out_overflow:
3081 print_overflow_msg(__func__, xdr);
3082 return -EIO;
3083 }
3084
3085 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3086 {
3087 __be32 *p;
3088
3089 p = xdr_inline_decode(xdr, 4);
3090 if (unlikely(!p))
3091 goto out_overflow;
3092 *attrlen = be32_to_cpup(p);
3093 *savep = xdr_stream_pos(xdr);
3094 return 0;
3095 out_overflow:
3096 print_overflow_msg(__func__, xdr);
3097 return -EIO;
3098 }
3099
3100 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3101 {
3102 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3103 int ret;
3104 ret = decode_attr_bitmap(xdr, bitmask);
3105 if (unlikely(ret < 0))
3106 return ret;
3107 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3108 } else
3109 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3110 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3111 bitmask[0], bitmask[1], bitmask[2]);
3112 return 0;
3113 }
3114
3115 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3116 {
3117 __be32 *p;
3118 int ret = 0;
3119
3120 *type = 0;
3121 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3122 return -EIO;
3123 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3124 p = xdr_inline_decode(xdr, 4);
3125 if (unlikely(!p))
3126 goto out_overflow;
3127 *type = be32_to_cpup(p);
3128 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3129 dprintk("%s: bad type %d\n", __func__, *type);
3130 return -EIO;
3131 }
3132 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3133 ret = NFS_ATTR_FATTR_TYPE;
3134 }
3135 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3136 return ret;
3137 out_overflow:
3138 print_overflow_msg(__func__, xdr);
3139 return -EIO;
3140 }
3141
3142 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3143 uint32_t *bitmap, uint32_t *type)
3144 {
3145 __be32 *p;
3146
3147 *type = 0;
3148 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3149 return -EIO;
3150 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3151 p = xdr_inline_decode(xdr, 4);
3152 if (unlikely(!p))
3153 goto out_overflow;
3154 *type = be32_to_cpup(p);
3155 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3156 }
3157 dprintk("%s: expire type=0x%x\n", __func__, *type);
3158 return 0;
3159 out_overflow:
3160 print_overflow_msg(__func__, xdr);
3161 return -EIO;
3162 }
3163
3164 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3165 {
3166 __be32 *p;
3167 int ret = 0;
3168
3169 *change = 0;
3170 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3171 return -EIO;
3172 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3173 p = xdr_inline_decode(xdr, 8);
3174 if (unlikely(!p))
3175 goto out_overflow;
3176 xdr_decode_hyper(p, change);
3177 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3178 ret = NFS_ATTR_FATTR_CHANGE;
3179 }
3180 dprintk("%s: change attribute=%Lu\n", __func__,
3181 (unsigned long long)*change);
3182 return ret;
3183 out_overflow:
3184 print_overflow_msg(__func__, xdr);
3185 return -EIO;
3186 }
3187
3188 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3189 {
3190 __be32 *p;
3191 int ret = 0;
3192
3193 *size = 0;
3194 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3195 return -EIO;
3196 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3197 p = xdr_inline_decode(xdr, 8);
3198 if (unlikely(!p))
3199 goto out_overflow;
3200 xdr_decode_hyper(p, size);
3201 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3202 ret = NFS_ATTR_FATTR_SIZE;
3203 }
3204 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3205 return ret;
3206 out_overflow:
3207 print_overflow_msg(__func__, xdr);
3208 return -EIO;
3209 }
3210
3211 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3212 {
3213 __be32 *p;
3214
3215 *res = 0;
3216 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3217 return -EIO;
3218 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3219 p = xdr_inline_decode(xdr, 4);
3220 if (unlikely(!p))
3221 goto out_overflow;
3222 *res = be32_to_cpup(p);
3223 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3224 }
3225 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3226 return 0;
3227 out_overflow:
3228 print_overflow_msg(__func__, xdr);
3229 return -EIO;
3230 }
3231
3232 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3233 {
3234 __be32 *p;
3235
3236 *res = 0;
3237 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3238 return -EIO;
3239 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3240 p = xdr_inline_decode(xdr, 4);
3241 if (unlikely(!p))
3242 goto out_overflow;
3243 *res = be32_to_cpup(p);
3244 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3245 }
3246 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3247 return 0;
3248 out_overflow:
3249 print_overflow_msg(__func__, xdr);
3250 return -EIO;
3251 }
3252
3253 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3254 {
3255 __be32 *p;
3256 int ret = 0;
3257
3258 fsid->major = 0;
3259 fsid->minor = 0;
3260 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3261 return -EIO;
3262 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3263 p = xdr_inline_decode(xdr, 16);
3264 if (unlikely(!p))
3265 goto out_overflow;
3266 p = xdr_decode_hyper(p, &fsid->major);
3267 xdr_decode_hyper(p, &fsid->minor);
3268 bitmap[0] &= ~FATTR4_WORD0_FSID;
3269 ret = NFS_ATTR_FATTR_FSID;
3270 }
3271 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3272 (unsigned long long)fsid->major,
3273 (unsigned long long)fsid->minor);
3274 return ret;
3275 out_overflow:
3276 print_overflow_msg(__func__, xdr);
3277 return -EIO;
3278 }
3279
3280 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3281 {
3282 __be32 *p;
3283
3284 *res = 60;
3285 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3286 return -EIO;
3287 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3288 p = xdr_inline_decode(xdr, 4);
3289 if (unlikely(!p))
3290 goto out_overflow;
3291 *res = be32_to_cpup(p);
3292 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3293 }
3294 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3295 return 0;
3296 out_overflow:
3297 print_overflow_msg(__func__, xdr);
3298 return -EIO;
3299 }
3300
3301 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3302 {
3303 __be32 *p;
3304
3305 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3306 return -EIO;
3307 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3308 p = xdr_inline_decode(xdr, 4);
3309 if (unlikely(!p))
3310 goto out_overflow;
3311 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3312 *res = -be32_to_cpup(p);
3313 }
3314 return 0;
3315 out_overflow:
3316 print_overflow_msg(__func__, xdr);
3317 return -EIO;
3318 }
3319
3320 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3321 {
3322 __be32 *p;
3323 int len;
3324
3325 if (fh != NULL)
3326 memset(fh, 0, sizeof(*fh));
3327
3328 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3329 return -EIO;
3330 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3331 p = xdr_inline_decode(xdr, 4);
3332 if (unlikely(!p))
3333 goto out_overflow;
3334 len = be32_to_cpup(p);
3335 if (len > NFS4_FHSIZE)
3336 return -EIO;
3337 p = xdr_inline_decode(xdr, len);
3338 if (unlikely(!p))
3339 goto out_overflow;
3340 if (fh != NULL) {
3341 memcpy(fh->data, p, len);
3342 fh->size = len;
3343 }
3344 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3345 }
3346 return 0;
3347 out_overflow:
3348 print_overflow_msg(__func__, xdr);
3349 return -EIO;
3350 }
3351
3352 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3353 {
3354 __be32 *p;
3355
3356 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3357 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3358 return -EIO;
3359 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3360 p = xdr_inline_decode(xdr, 4);
3361 if (unlikely(!p))
3362 goto out_overflow;
3363 *res = be32_to_cpup(p);
3364 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3365 }
3366 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3367 return 0;
3368 out_overflow:
3369 print_overflow_msg(__func__, xdr);
3370 return -EIO;
3371 }
3372
3373 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3374 {
3375 __be32 *p;
3376 int ret = 0;
3377
3378 *fileid = 0;
3379 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3380 return -EIO;
3381 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3382 p = xdr_inline_decode(xdr, 8);
3383 if (unlikely(!p))
3384 goto out_overflow;
3385 xdr_decode_hyper(p, fileid);
3386 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3387 ret = NFS_ATTR_FATTR_FILEID;
3388 }
3389 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3390 return ret;
3391 out_overflow:
3392 print_overflow_msg(__func__, xdr);
3393 return -EIO;
3394 }
3395
3396 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3397 {
3398 __be32 *p;
3399 int ret = 0;
3400
3401 *fileid = 0;
3402 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3403 return -EIO;
3404 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3405 p = xdr_inline_decode(xdr, 8);
3406 if (unlikely(!p))
3407 goto out_overflow;
3408 xdr_decode_hyper(p, fileid);
3409 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3410 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3411 }
3412 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3413 return ret;
3414 out_overflow:
3415 print_overflow_msg(__func__, xdr);
3416 return -EIO;
3417 }
3418
3419 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3420 {
3421 __be32 *p;
3422 int status = 0;
3423
3424 *res = 0;
3425 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3426 return -EIO;
3427 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3428 p = xdr_inline_decode(xdr, 8);
3429 if (unlikely(!p))
3430 goto out_overflow;
3431 xdr_decode_hyper(p, res);
3432 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3433 }
3434 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3435 return status;
3436 out_overflow:
3437 print_overflow_msg(__func__, xdr);
3438 return -EIO;
3439 }
3440
3441 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3442 {
3443 __be32 *p;
3444 int status = 0;
3445
3446 *res = 0;
3447 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3448 return -EIO;
3449 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3450 p = xdr_inline_decode(xdr, 8);
3451 if (unlikely(!p))
3452 goto out_overflow;
3453 xdr_decode_hyper(p, res);
3454 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3455 }
3456 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3457 return status;
3458 out_overflow:
3459 print_overflow_msg(__func__, xdr);
3460 return -EIO;
3461 }
3462
3463 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3464 {
3465 __be32 *p;
3466 int status = 0;
3467
3468 *res = 0;
3469 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3470 return -EIO;
3471 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3472 p = xdr_inline_decode(xdr, 8);
3473 if (unlikely(!p))
3474 goto out_overflow;
3475 xdr_decode_hyper(p, res);
3476 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3477 }
3478 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3479 return status;
3480 out_overflow:
3481 print_overflow_msg(__func__, xdr);
3482 return -EIO;
3483 }
3484
3485 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3486 {
3487 u32 n;
3488 __be32 *p;
3489 int status = 0;
3490
3491 p = xdr_inline_decode(xdr, 4);
3492 if (unlikely(!p))
3493 goto out_overflow;
3494 n = be32_to_cpup(p);
3495 if (n == 0)
3496 goto root_path;
3497 dprintk("pathname4: ");
3498 path->ncomponents = 0;
3499 while (path->ncomponents < n) {
3500 struct nfs4_string *component = &path->components[path->ncomponents];
3501 status = decode_opaque_inline(xdr, &component->len, &component->data);
3502 if (unlikely(status != 0))
3503 goto out_eio;
3504 ifdebug (XDR)
3505 pr_cont("%s%.*s ",
3506 (path->ncomponents != n ? "/ " : ""),
3507 component->len, component->data);
3508 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3509 path->ncomponents++;
3510 else {
3511 dprintk("cannot parse %d components in path\n", n);
3512 goto out_eio;
3513 }
3514 }
3515 out:
3516 return status;
3517 root_path:
3518 /* a root pathname is sent as a zero component4 */
3519 path->ncomponents = 1;
3520 path->components[0].len=0;
3521 path->components[0].data=NULL;
3522 dprintk("pathname4: /\n");
3523 goto out;
3524 out_eio:
3525 dprintk(" status %d", status);
3526 status = -EIO;
3527 goto out;
3528 out_overflow:
3529 print_overflow_msg(__func__, xdr);
3530 return -EIO;
3531 }
3532
3533 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3534 {
3535 int n;
3536 __be32 *p;
3537 int status = -EIO;
3538
3539 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3540 goto out;
3541 status = 0;
3542 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3543 goto out;
3544 status = -EIO;
3545 /* Ignore borken servers that return unrequested attrs */
3546 if (unlikely(res == NULL))
3547 goto out;
3548 dprintk("%s: fsroot:\n", __func__);
3549 status = decode_pathname(xdr, &res->fs_path);
3550 if (unlikely(status != 0))
3551 goto out;
3552 p = xdr_inline_decode(xdr, 4);
3553 if (unlikely(!p))
3554 goto out_overflow;
3555 n = be32_to_cpup(p);
3556 if (n <= 0)
3557 goto out_eio;
3558 res->nlocations = 0;
3559 while (res->nlocations < n) {
3560 u32 m;
3561 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3562
3563 p = xdr_inline_decode(xdr, 4);
3564 if (unlikely(!p))
3565 goto out_overflow;
3566 m = be32_to_cpup(p);
3567
3568 loc->nservers = 0;
3569 dprintk("%s: servers:\n", __func__);
3570 while (loc->nservers < m) {
3571 struct nfs4_string *server = &loc->servers[loc->nservers];
3572 status = decode_opaque_inline(xdr, &server->len, &server->data);
3573 if (unlikely(status != 0))
3574 goto out_eio;
3575 dprintk("%s ", server->data);
3576 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3577 loc->nservers++;
3578 else {
3579 unsigned int i;
3580 dprintk("%s: using first %u of %u servers "
3581 "returned for location %u\n",
3582 __func__,
3583 NFS4_FS_LOCATION_MAXSERVERS,
3584 m, res->nlocations);
3585 for (i = loc->nservers; i < m; i++) {
3586 unsigned int len;
3587 char *data;
3588 status = decode_opaque_inline(xdr, &len, &data);
3589 if (unlikely(status != 0))
3590 goto out_eio;
3591 }
3592 }
3593 }
3594 status = decode_pathname(xdr, &loc->rootpath);
3595 if (unlikely(status != 0))
3596 goto out_eio;
3597 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3598 res->nlocations++;
3599 }
3600 if (res->nlocations != 0)
3601 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3602 out:
3603 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3604 return status;
3605 out_overflow:
3606 print_overflow_msg(__func__, xdr);
3607 out_eio:
3608 status = -EIO;
3609 goto out;
3610 }
3611
3612 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3613 {
3614 __be32 *p;
3615 int status = 0;
3616
3617 *res = 0;
3618 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3619 return -EIO;
3620 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3621 p = xdr_inline_decode(xdr, 8);
3622 if (unlikely(!p))
3623 goto out_overflow;
3624 xdr_decode_hyper(p, res);
3625 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3626 }
3627 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3628 return status;
3629 out_overflow:
3630 print_overflow_msg(__func__, xdr);
3631 return -EIO;
3632 }
3633
3634 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3635 {
3636 __be32 *p;
3637 int status = 0;
3638
3639 *maxlink = 1;
3640 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3641 return -EIO;
3642 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3643 p = xdr_inline_decode(xdr, 4);
3644 if (unlikely(!p))
3645 goto out_overflow;
3646 *maxlink = be32_to_cpup(p);
3647 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3648 }
3649 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3650 return status;
3651 out_overflow:
3652 print_overflow_msg(__func__, xdr);
3653 return -EIO;
3654 }
3655
3656 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3657 {
3658 __be32 *p;
3659 int status = 0;
3660
3661 *maxname = 1024;
3662 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3663 return -EIO;
3664 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3665 p = xdr_inline_decode(xdr, 4);
3666 if (unlikely(!p))
3667 goto out_overflow;
3668 *maxname = be32_to_cpup(p);
3669 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3670 }
3671 dprintk("%s: maxname=%u\n", __func__, *maxname);
3672 return status;
3673 out_overflow:
3674 print_overflow_msg(__func__, xdr);
3675 return -EIO;
3676 }
3677
3678 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3679 {
3680 __be32 *p;
3681 int status = 0;
3682
3683 *res = 1024;
3684 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3685 return -EIO;
3686 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3687 uint64_t maxread;
3688 p = xdr_inline_decode(xdr, 8);
3689 if (unlikely(!p))
3690 goto out_overflow;
3691 xdr_decode_hyper(p, &maxread);
3692 if (maxread > 0x7FFFFFFF)
3693 maxread = 0x7FFFFFFF;
3694 *res = (uint32_t)maxread;
3695 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3696 }
3697 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3698 return status;
3699 out_overflow:
3700 print_overflow_msg(__func__, xdr);
3701 return -EIO;
3702 }
3703
3704 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3705 {
3706 __be32 *p;
3707 int status = 0;
3708
3709 *res = 1024;
3710 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3711 return -EIO;
3712 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3713 uint64_t maxwrite;
3714 p = xdr_inline_decode(xdr, 8);
3715 if (unlikely(!p))
3716 goto out_overflow;
3717 xdr_decode_hyper(p, &maxwrite);
3718 if (maxwrite > 0x7FFFFFFF)
3719 maxwrite = 0x7FFFFFFF;
3720 *res = (uint32_t)maxwrite;
3721 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3722 }
3723 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3724 return status;
3725 out_overflow:
3726 print_overflow_msg(__func__, xdr);
3727 return -EIO;
3728 }
3729
3730 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3731 {
3732 uint32_t tmp;
3733 __be32 *p;
3734 int ret = 0;
3735
3736 *mode = 0;
3737 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3738 return -EIO;
3739 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3740 p = xdr_inline_decode(xdr, 4);
3741 if (unlikely(!p))
3742 goto out_overflow;
3743 tmp = be32_to_cpup(p);
3744 *mode = tmp & ~S_IFMT;
3745 bitmap[1] &= ~FATTR4_WORD1_MODE;
3746 ret = NFS_ATTR_FATTR_MODE;
3747 }
3748 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3749 return ret;
3750 out_overflow:
3751 print_overflow_msg(__func__, xdr);
3752 return -EIO;
3753 }
3754
3755 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3756 {
3757 __be32 *p;
3758 int ret = 0;
3759
3760 *nlink = 1;
3761 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3762 return -EIO;
3763 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3764 p = xdr_inline_decode(xdr, 4);
3765 if (unlikely(!p))
3766 goto out_overflow;
3767 *nlink = be32_to_cpup(p);
3768 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3769 ret = NFS_ATTR_FATTR_NLINK;
3770 }
3771 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3772 return ret;
3773 out_overflow:
3774 print_overflow_msg(__func__, xdr);
3775 return -EIO;
3776 }
3777
3778 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3779 const struct nfs_server *server, uint32_t *uid,
3780 struct nfs4_string *owner_name)
3781 {
3782 uint32_t len;
3783 __be32 *p;
3784 int ret = 0;
3785
3786 *uid = -2;
3787 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3788 return -EIO;
3789 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3790 p = xdr_inline_decode(xdr, 4);
3791 if (unlikely(!p))
3792 goto out_overflow;
3793 len = be32_to_cpup(p);
3794 p = xdr_inline_decode(xdr, len);
3795 if (unlikely(!p))
3796 goto out_overflow;
3797 if (owner_name != NULL) {
3798 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3799 if (owner_name->data != NULL) {
3800 owner_name->len = len;
3801 ret = NFS_ATTR_FATTR_OWNER_NAME;
3802 }
3803 } else if (len < XDR_MAX_NETOBJ) {
3804 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3805 ret = NFS_ATTR_FATTR_OWNER;
3806 else
3807 dprintk("%s: nfs_map_name_to_uid failed!\n",
3808 __func__);
3809 } else
3810 dprintk("%s: name too long (%u)!\n",
3811 __func__, len);
3812 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3813 }
3814 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3815 return ret;
3816 out_overflow:
3817 print_overflow_msg(__func__, xdr);
3818 return -EIO;
3819 }
3820
3821 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3822 const struct nfs_server *server, uint32_t *gid,
3823 struct nfs4_string *group_name)
3824 {
3825 uint32_t len;
3826 __be32 *p;
3827 int ret = 0;
3828
3829 *gid = -2;
3830 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3831 return -EIO;
3832 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3833 p = xdr_inline_decode(xdr, 4);
3834 if (unlikely(!p))
3835 goto out_overflow;
3836 len = be32_to_cpup(p);
3837 p = xdr_inline_decode(xdr, len);
3838 if (unlikely(!p))
3839 goto out_overflow;
3840 if (group_name != NULL) {
3841 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3842 if (group_name->data != NULL) {
3843 group_name->len = len;
3844 ret = NFS_ATTR_FATTR_GROUP_NAME;
3845 }
3846 } else if (len < XDR_MAX_NETOBJ) {
3847 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3848 ret = NFS_ATTR_FATTR_GROUP;
3849 else
3850 dprintk("%s: nfs_map_group_to_gid failed!\n",
3851 __func__);
3852 } else
3853 dprintk("%s: name too long (%u)!\n",
3854 __func__, len);
3855 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3856 }
3857 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3858 return ret;
3859 out_overflow:
3860 print_overflow_msg(__func__, xdr);
3861 return -EIO;
3862 }
3863
3864 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3865 {
3866 uint32_t major = 0, minor = 0;
3867 __be32 *p;
3868 int ret = 0;
3869
3870 *rdev = MKDEV(0,0);
3871 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3872 return -EIO;
3873 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3874 dev_t tmp;
3875
3876 p = xdr_inline_decode(xdr, 8);
3877 if (unlikely(!p))
3878 goto out_overflow;
3879 major = be32_to_cpup(p++);
3880 minor = be32_to_cpup(p);
3881 tmp = MKDEV(major, minor);
3882 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3883 *rdev = tmp;
3884 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3885 ret = NFS_ATTR_FATTR_RDEV;
3886 }
3887 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3888 return ret;
3889 out_overflow:
3890 print_overflow_msg(__func__, xdr);
3891 return -EIO;
3892 }
3893
3894 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3895 {
3896 __be32 *p;
3897 int status = 0;
3898
3899 *res = 0;
3900 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3901 return -EIO;
3902 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3903 p = xdr_inline_decode(xdr, 8);
3904 if (unlikely(!p))
3905 goto out_overflow;
3906 xdr_decode_hyper(p, res);
3907 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3908 }
3909 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3910 return status;
3911 out_overflow:
3912 print_overflow_msg(__func__, xdr);
3913 return -EIO;
3914 }
3915
3916 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3917 {
3918 __be32 *p;
3919 int status = 0;
3920
3921 *res = 0;
3922 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3923 return -EIO;
3924 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3925 p = xdr_inline_decode(xdr, 8);
3926 if (unlikely(!p))
3927 goto out_overflow;
3928 xdr_decode_hyper(p, res);
3929 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3930 }
3931 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3932 return status;
3933 out_overflow:
3934 print_overflow_msg(__func__, xdr);
3935 return -EIO;
3936 }
3937
3938 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3939 {
3940 __be32 *p;
3941 int status = 0;
3942
3943 *res = 0;
3944 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3945 return -EIO;
3946 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3947 p = xdr_inline_decode(xdr, 8);
3948 if (unlikely(!p))
3949 goto out_overflow;
3950 xdr_decode_hyper(p, res);
3951 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3952 }
3953 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3954 return status;
3955 out_overflow:
3956 print_overflow_msg(__func__, xdr);
3957 return -EIO;
3958 }
3959
3960 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3961 {
3962 __be32 *p;
3963 int ret = 0;
3964
3965 *used = 0;
3966 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3967 return -EIO;
3968 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3969 p = xdr_inline_decode(xdr, 8);
3970 if (unlikely(!p))
3971 goto out_overflow;
3972 xdr_decode_hyper(p, used);
3973 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3974 ret = NFS_ATTR_FATTR_SPACE_USED;
3975 }
3976 dprintk("%s: space used=%Lu\n", __func__,
3977 (unsigned long long)*used);
3978 return ret;
3979 out_overflow:
3980 print_overflow_msg(__func__, xdr);
3981 return -EIO;
3982 }
3983
3984 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3985 {
3986 __be32 *p;
3987 uint64_t sec;
3988 uint32_t nsec;
3989
3990 p = xdr_inline_decode(xdr, 12);
3991 if (unlikely(!p))
3992 goto out_overflow;
3993 p = xdr_decode_hyper(p, &sec);
3994 nsec = be32_to_cpup(p);
3995 time->tv_sec = (time_t)sec;
3996 time->tv_nsec = (long)nsec;
3997 return 0;
3998 out_overflow:
3999 print_overflow_msg(__func__, xdr);
4000 return -EIO;
4001 }
4002
4003 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4004 {
4005 int status = 0;
4006
4007 time->tv_sec = 0;
4008 time->tv_nsec = 0;
4009 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4010 return -EIO;
4011 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4012 status = decode_attr_time(xdr, time);
4013 if (status == 0)
4014 status = NFS_ATTR_FATTR_ATIME;
4015 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4016 }
4017 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4018 return status;
4019 }
4020
4021 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4022 {
4023 int status = 0;
4024
4025 time->tv_sec = 0;
4026 time->tv_nsec = 0;
4027 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4028 return -EIO;
4029 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4030 status = decode_attr_time(xdr, time);
4031 if (status == 0)
4032 status = NFS_ATTR_FATTR_CTIME;
4033 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4034 }
4035 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4036 return status;
4037 }
4038
4039 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4040 struct timespec *time)
4041 {
4042 int status = 0;
4043
4044 time->tv_sec = 0;
4045 time->tv_nsec = 0;
4046 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4047 return -EIO;
4048 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4049 status = decode_attr_time(xdr, time);
4050 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4051 }
4052 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4053 (long)time->tv_nsec);
4054 return status;
4055 }
4056
4057 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4058 {
4059 int status = 0;
4060
4061 time->tv_sec = 0;
4062 time->tv_nsec = 0;
4063 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4064 return -EIO;
4065 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4066 status = decode_attr_time(xdr, time);
4067 if (status == 0)
4068 status = NFS_ATTR_FATTR_MTIME;
4069 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4070 }
4071 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4072 return status;
4073 }
4074
4075 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4076 {
4077 unsigned int attrwords = XDR_QUADLEN(attrlen);
4078 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4079
4080 if (unlikely(attrwords != nwords)) {
4081 dprintk("%s: server returned incorrect attribute length: "
4082 "%u %c %u\n",
4083 __func__,
4084 attrwords << 2,
4085 (attrwords < nwords) ? '<' : '>',
4086 nwords << 2);
4087 return -EIO;
4088 }
4089 return 0;
4090 }
4091
4092 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4093 {
4094 __be32 *p;
4095
4096 p = xdr_inline_decode(xdr, 20);
4097 if (unlikely(!p))
4098 goto out_overflow;
4099 cinfo->atomic = be32_to_cpup(p++);
4100 p = xdr_decode_hyper(p, &cinfo->before);
4101 xdr_decode_hyper(p, &cinfo->after);
4102 return 0;
4103 out_overflow:
4104 print_overflow_msg(__func__, xdr);
4105 return -EIO;
4106 }
4107
4108 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4109 {
4110 __be32 *p;
4111 uint32_t supp, acc;
4112 int status;
4113
4114 status = decode_op_hdr(xdr, OP_ACCESS);
4115 if (status)
4116 return status;
4117 p = xdr_inline_decode(xdr, 8);
4118 if (unlikely(!p))
4119 goto out_overflow;
4120 supp = be32_to_cpup(p++);
4121 acc = be32_to_cpup(p);
4122 *supported = supp;
4123 *access = acc;
4124 return 0;
4125 out_overflow:
4126 print_overflow_msg(__func__, xdr);
4127 return -EIO;
4128 }
4129
4130 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4131 {
4132 __be32 *p;
4133
4134 p = xdr_inline_decode(xdr, len);
4135 if (likely(p)) {
4136 memcpy(buf, p, len);
4137 return 0;
4138 }
4139 print_overflow_msg(__func__, xdr);
4140 return -EIO;
4141 }
4142
4143 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4144 {
4145 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4146 }
4147
4148 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4149 {
4150 int status;
4151
4152 status = decode_op_hdr(xdr, OP_CLOSE);
4153 if (status != -EIO)
4154 nfs_increment_open_seqid(status, res->seqid);
4155 if (!status)
4156 status = decode_stateid(xdr, &res->stateid);
4157 return status;
4158 }
4159
4160 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4161 {
4162 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4163 }
4164
4165 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4166 {
4167 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4168 }
4169
4170 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4171 {
4172 int status;
4173
4174 status = decode_op_hdr(xdr, OP_COMMIT);
4175 if (!status)
4176 status = decode_write_verifier(xdr, &res->verf->verifier);
4177 return status;
4178 }
4179
4180 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4181 {
4182 __be32 *p;
4183 uint32_t bmlen;
4184 int status;
4185
4186 status = decode_op_hdr(xdr, OP_CREATE);
4187 if (status)
4188 return status;
4189 if ((status = decode_change_info(xdr, cinfo)))
4190 return status;
4191 p = xdr_inline_decode(xdr, 4);
4192 if (unlikely(!p))
4193 goto out_overflow;
4194 bmlen = be32_to_cpup(p);
4195 p = xdr_inline_decode(xdr, bmlen << 2);
4196 if (likely(p))
4197 return 0;
4198 out_overflow:
4199 print_overflow_msg(__func__, xdr);
4200 return -EIO;
4201 }
4202
4203 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4204 {
4205 unsigned int savep;
4206 uint32_t attrlen, bitmap[3] = {0};
4207 int status;
4208
4209 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4210 goto xdr_error;
4211 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4212 goto xdr_error;
4213 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4214 goto xdr_error;
4215 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4216 goto xdr_error;
4217 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4218 &res->fh_expire_type)) != 0)
4219 goto xdr_error;
4220 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4221 goto xdr_error;
4222 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4223 goto xdr_error;
4224 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4225 goto xdr_error;
4226 status = verify_attr_len(xdr, savep, attrlen);
4227 xdr_error:
4228 dprintk("%s: xdr returned %d!\n", __func__, -status);
4229 return status;
4230 }
4231
4232 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4233 {
4234 unsigned int savep;
4235 uint32_t attrlen, bitmap[3] = {0};
4236 int status;
4237
4238 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4239 goto xdr_error;
4240 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4241 goto xdr_error;
4242 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4243 goto xdr_error;
4244
4245 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4246 goto xdr_error;
4247 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4248 goto xdr_error;
4249 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4250 goto xdr_error;
4251 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4252 goto xdr_error;
4253 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4254 goto xdr_error;
4255 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4256 goto xdr_error;
4257
4258 status = verify_attr_len(xdr, savep, attrlen);
4259 xdr_error:
4260 dprintk("%s: xdr returned %d!\n", __func__, -status);
4261 return status;
4262 }
4263
4264 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4265 {
4266 unsigned int savep;
4267 uint32_t attrlen, bitmap[3] = {0};
4268 int status;
4269
4270 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4271 goto xdr_error;
4272 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4273 goto xdr_error;
4274 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4275 goto xdr_error;
4276
4277 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4278 goto xdr_error;
4279 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4280 goto xdr_error;
4281
4282 status = verify_attr_len(xdr, savep, attrlen);
4283 xdr_error:
4284 dprintk("%s: xdr returned %d!\n", __func__, -status);
4285 return status;
4286 }
4287
4288 static int decode_threshold_hint(struct xdr_stream *xdr,
4289 uint32_t *bitmap,
4290 uint64_t *res,
4291 uint32_t hint_bit)
4292 {
4293 __be32 *p;
4294
4295 *res = 0;
4296 if (likely(bitmap[0] & hint_bit)) {
4297 p = xdr_inline_decode(xdr, 8);
4298 if (unlikely(!p))
4299 goto out_overflow;
4300 xdr_decode_hyper(p, res);
4301 }
4302 return 0;
4303 out_overflow:
4304 print_overflow_msg(__func__, xdr);
4305 return -EIO;
4306 }
4307
4308 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4309 struct nfs4_threshold *res)
4310 {
4311 __be32 *p;
4312 unsigned int savep;
4313 uint32_t bitmap[3] = {0,}, attrlen;
4314 int status;
4315
4316 /* layout type */
4317 p = xdr_inline_decode(xdr, 4);
4318 if (unlikely(!p)) {
4319 print_overflow_msg(__func__, xdr);
4320 return -EIO;
4321 }
4322 res->l_type = be32_to_cpup(p);
4323
4324 /* thi_hintset bitmap */
4325 status = decode_attr_bitmap(xdr, bitmap);
4326 if (status < 0)
4327 goto xdr_error;
4328
4329 /* thi_hintlist length */
4330 status = decode_attr_length(xdr, &attrlen, &savep);
4331 if (status < 0)
4332 goto xdr_error;
4333 /* thi_hintlist */
4334 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4335 if (status < 0)
4336 goto xdr_error;
4337 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4338 if (status < 0)
4339 goto xdr_error;
4340 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4341 THRESHOLD_RD_IO);
4342 if (status < 0)
4343 goto xdr_error;
4344 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4345 THRESHOLD_WR_IO);
4346 if (status < 0)
4347 goto xdr_error;
4348
4349 status = verify_attr_len(xdr, savep, attrlen);
4350 res->bm = bitmap[0];
4351
4352 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4353 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4354 res->wr_io_sz);
4355 xdr_error:
4356 dprintk("%s ret=%d!\n", __func__, status);
4357 return status;
4358 }
4359
4360 /*
4361 * Thresholds on pNFS direct I/O vrs MDS I/O
4362 */
4363 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4364 uint32_t *bitmap,
4365 struct nfs4_threshold *res)
4366 {
4367 __be32 *p;
4368 int status = 0;
4369 uint32_t num;
4370
4371 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4372 return -EIO;
4373 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4374 /* Did the server return an unrequested attribute? */
4375 if (unlikely(res == NULL))
4376 return -EREMOTEIO;
4377 p = xdr_inline_decode(xdr, 4);
4378 if (unlikely(!p))
4379 goto out_overflow;
4380 num = be32_to_cpup(p);
4381 if (num == 0)
4382 return 0;
4383 if (num > 1)
4384 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4385 "drivers per filesystem not supported\n",
4386 __func__);
4387
4388 status = decode_first_threshold_item4(xdr, res);
4389 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4390 }
4391 return status;
4392 out_overflow:
4393 print_overflow_msg(__func__, xdr);
4394 return -EIO;
4395 }
4396
4397 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4398 struct nfs_fattr *fattr, struct nfs_fh *fh,
4399 struct nfs4_fs_locations *fs_loc,
4400 const struct nfs_server *server)
4401 {
4402 int status;
4403 umode_t fmode = 0;
4404 uint32_t type;
4405 int32_t err;
4406
4407 status = decode_attr_type(xdr, bitmap, &type);
4408 if (status < 0)
4409 goto xdr_error;
4410 fattr->mode = 0;
4411 if (status != 0) {
4412 fattr->mode |= nfs_type2fmt[type];
4413 fattr->valid |= status;
4414 }
4415
4416 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4417 if (status < 0)
4418 goto xdr_error;
4419 fattr->valid |= status;
4420
4421 status = decode_attr_size(xdr, bitmap, &fattr->size);
4422 if (status < 0)
4423 goto xdr_error;
4424 fattr->valid |= status;
4425
4426 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4427 if (status < 0)
4428 goto xdr_error;
4429 fattr->valid |= status;
4430
4431 err = 0;
4432 status = decode_attr_error(xdr, bitmap, &err);
4433 if (status < 0)
4434 goto xdr_error;
4435
4436 status = decode_attr_filehandle(xdr, bitmap, fh);
4437 if (status < 0)
4438 goto xdr_error;
4439
4440 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4441 if (status < 0)
4442 goto xdr_error;
4443 fattr->valid |= status;
4444
4445 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4446 if (status < 0)
4447 goto xdr_error;
4448 fattr->valid |= status;
4449
4450 status = decode_attr_mode(xdr, bitmap, &fmode);
4451 if (status < 0)
4452 goto xdr_error;
4453 if (status != 0) {
4454 fattr->mode |= fmode;
4455 fattr->valid |= status;
4456 }
4457
4458 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4459 if (status < 0)
4460 goto xdr_error;
4461 fattr->valid |= status;
4462
4463 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4464 if (status < 0)
4465 goto xdr_error;
4466 fattr->valid |= status;
4467
4468 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4469 if (status < 0)
4470 goto xdr_error;
4471 fattr->valid |= status;
4472
4473 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4474 if (status < 0)
4475 goto xdr_error;
4476 fattr->valid |= status;
4477
4478 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4479 if (status < 0)
4480 goto xdr_error;
4481 fattr->valid |= status;
4482
4483 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4484 if (status < 0)
4485 goto xdr_error;
4486 fattr->valid |= status;
4487
4488 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4489 if (status < 0)
4490 goto xdr_error;
4491 fattr->valid |= status;
4492
4493 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4494 if (status < 0)
4495 goto xdr_error;
4496 fattr->valid |= status;
4497
4498 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4499 if (status < 0)
4500 goto xdr_error;
4501 fattr->valid |= status;
4502
4503 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4504 if (status < 0)
4505 goto xdr_error;
4506
4507 xdr_error:
4508 dprintk("%s: xdr returned %d\n", __func__, -status);
4509 return status;
4510 }
4511
4512 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4513 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4514 const struct nfs_server *server)
4515 {
4516 unsigned int savep;
4517 uint32_t attrlen,
4518 bitmap[3] = {0};
4519 int status;
4520
4521 status = decode_op_hdr(xdr, OP_GETATTR);
4522 if (status < 0)
4523 goto xdr_error;
4524
4525 status = decode_attr_bitmap(xdr, bitmap);
4526 if (status < 0)
4527 goto xdr_error;
4528
4529 status = decode_attr_length(xdr, &attrlen, &savep);
4530 if (status < 0)
4531 goto xdr_error;
4532
4533 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4534 if (status < 0)
4535 goto xdr_error;
4536
4537 status = verify_attr_len(xdr, savep, attrlen);
4538 xdr_error:
4539 dprintk("%s: xdr returned %d\n", __func__, -status);
4540 return status;
4541 }
4542
4543 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4544 const struct nfs_server *server)
4545 {
4546 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4547 }
4548
4549 /*
4550 * Decode potentially multiple layout types. Currently we only support
4551 * one layout driver per file system.
4552 */
4553 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4554 uint32_t *layouttype)
4555 {
4556 uint32_t *p;
4557 int num;
4558
4559 p = xdr_inline_decode(xdr, 4);
4560 if (unlikely(!p))
4561 goto out_overflow;
4562 num = be32_to_cpup(p);
4563
4564 /* pNFS is not supported by the underlying file system */
4565 if (num == 0) {
4566 *layouttype = 0;
4567 return 0;
4568 }
4569 if (num > 1)
4570 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4571 "drivers per filesystem not supported\n", __func__);
4572
4573 /* Decode and set first layout type, move xdr->p past unused types */
4574 p = xdr_inline_decode(xdr, num * 4);
4575 if (unlikely(!p))
4576 goto out_overflow;
4577 *layouttype = be32_to_cpup(p);
4578 return 0;
4579 out_overflow:
4580 print_overflow_msg(__func__, xdr);
4581 return -EIO;
4582 }
4583
4584 /*
4585 * The type of file system exported.
4586 * Note we must ensure that layouttype is set in any non-error case.
4587 */
4588 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4589 uint32_t *layouttype)
4590 {
4591 int status = 0;
4592
4593 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4594 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4595 return -EIO;
4596 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4597 status = decode_first_pnfs_layout_type(xdr, layouttype);
4598 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4599 } else
4600 *layouttype = 0;
4601 return status;
4602 }
4603
4604 /*
4605 * The prefered block size for layout directed io
4606 */
4607 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4608 uint32_t *res)
4609 {
4610 __be32 *p;
4611
4612 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4613 *res = 0;
4614 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4615 p = xdr_inline_decode(xdr, 4);
4616 if (unlikely(!p)) {
4617 print_overflow_msg(__func__, xdr);
4618 return -EIO;
4619 }
4620 *res = be32_to_cpup(p);
4621 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4622 }
4623 return 0;
4624 }
4625
4626 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4627 {
4628 unsigned int savep;
4629 uint32_t attrlen, bitmap[3];
4630 int status;
4631
4632 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4633 goto xdr_error;
4634 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4635 goto xdr_error;
4636 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4637 goto xdr_error;
4638
4639 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4640
4641 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4642 goto xdr_error;
4643 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4644 goto xdr_error;
4645 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4646 goto xdr_error;
4647 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4648 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4649 goto xdr_error;
4650 fsinfo->wtpref = fsinfo->wtmax;
4651 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4652 if (status != 0)
4653 goto xdr_error;
4654 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4655 if (status != 0)
4656 goto xdr_error;
4657 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4658 if (status)
4659 goto xdr_error;
4660
4661 status = verify_attr_len(xdr, savep, attrlen);
4662 xdr_error:
4663 dprintk("%s: xdr returned %d!\n", __func__, -status);
4664 return status;
4665 }
4666
4667 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4668 {
4669 __be32 *p;
4670 uint32_t len;
4671 int status;
4672
4673 /* Zero handle first to allow comparisons */
4674 memset(fh, 0, sizeof(*fh));
4675
4676 status = decode_op_hdr(xdr, OP_GETFH);
4677 if (status)
4678 return status;
4679
4680 p = xdr_inline_decode(xdr, 4);
4681 if (unlikely(!p))
4682 goto out_overflow;
4683 len = be32_to_cpup(p);
4684 if (len > NFS4_FHSIZE)
4685 return -EIO;
4686 fh->size = len;
4687 p = xdr_inline_decode(xdr, len);
4688 if (unlikely(!p))
4689 goto out_overflow;
4690 memcpy(fh->data, p, len);
4691 return 0;
4692 out_overflow:
4693 print_overflow_msg(__func__, xdr);
4694 return -EIO;
4695 }
4696
4697 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4698 {
4699 int status;
4700
4701 status = decode_op_hdr(xdr, OP_LINK);
4702 if (status)
4703 return status;
4704 return decode_change_info(xdr, cinfo);
4705 }
4706
4707 /*
4708 * We create the owner, so we know a proper owner.id length is 4.
4709 */
4710 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4711 {
4712 uint64_t offset, length, clientid;
4713 __be32 *p;
4714 uint32_t namelen, type;
4715
4716 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4717 if (unlikely(!p))
4718 goto out_overflow;
4719 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4720 p = xdr_decode_hyper(p, &length);
4721 type = be32_to_cpup(p++); /* 4 byte read */
4722 if (fl != NULL) { /* manipulate file lock */
4723 fl->fl_start = (loff_t)offset;
4724 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4725 if (length == ~(uint64_t)0)
4726 fl->fl_end = OFFSET_MAX;
4727 fl->fl_type = F_WRLCK;
4728 if (type & 1)
4729 fl->fl_type = F_RDLCK;
4730 fl->fl_pid = 0;
4731 }
4732 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4733 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4734 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4735 if (likely(p))
4736 return -NFS4ERR_DENIED;
4737 out_overflow:
4738 print_overflow_msg(__func__, xdr);
4739 return -EIO;
4740 }
4741
4742 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4743 {
4744 int status;
4745
4746 status = decode_op_hdr(xdr, OP_LOCK);
4747 if (status == -EIO)
4748 goto out;
4749 if (status == 0) {
4750 status = decode_stateid(xdr, &res->stateid);
4751 if (unlikely(status))
4752 goto out;
4753 } else if (status == -NFS4ERR_DENIED)
4754 status = decode_lock_denied(xdr, NULL);
4755 if (res->open_seqid != NULL)
4756 nfs_increment_open_seqid(status, res->open_seqid);
4757 nfs_increment_lock_seqid(status, res->lock_seqid);
4758 out:
4759 return status;
4760 }
4761
4762 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4763 {
4764 int status;
4765 status = decode_op_hdr(xdr, OP_LOCKT);
4766 if (status == -NFS4ERR_DENIED)
4767 return decode_lock_denied(xdr, res->denied);
4768 return status;
4769 }
4770
4771 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4772 {
4773 int status;
4774
4775 status = decode_op_hdr(xdr, OP_LOCKU);
4776 if (status != -EIO)
4777 nfs_increment_lock_seqid(status, res->seqid);
4778 if (status == 0)
4779 status = decode_stateid(xdr, &res->stateid);
4780 return status;
4781 }
4782
4783 static int decode_release_lockowner(struct xdr_stream *xdr)
4784 {
4785 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4786 }
4787
4788 static int decode_lookup(struct xdr_stream *xdr)
4789 {
4790 return decode_op_hdr(xdr, OP_LOOKUP);
4791 }
4792
4793 /* This is too sick! */
4794 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4795 {
4796 __be32 *p;
4797 uint32_t limit_type, nblocks, blocksize;
4798
4799 p = xdr_inline_decode(xdr, 12);
4800 if (unlikely(!p))
4801 goto out_overflow;
4802 limit_type = be32_to_cpup(p++);
4803 switch (limit_type) {
4804 case 1:
4805 xdr_decode_hyper(p, maxsize);
4806 break;
4807 case 2:
4808 nblocks = be32_to_cpup(p++);
4809 blocksize = be32_to_cpup(p);
4810 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4811 }
4812 return 0;
4813 out_overflow:
4814 print_overflow_msg(__func__, xdr);
4815 return -EIO;
4816 }
4817
4818 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4819 {
4820 __be32 *p;
4821 uint32_t delegation_type;
4822 int status;
4823
4824 p = xdr_inline_decode(xdr, 4);
4825 if (unlikely(!p))
4826 goto out_overflow;
4827 delegation_type = be32_to_cpup(p);
4828 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4829 res->delegation_type = 0;
4830 return 0;
4831 }
4832 status = decode_stateid(xdr, &res->delegation);
4833 if (unlikely(status))
4834 return status;
4835 p = xdr_inline_decode(xdr, 4);
4836 if (unlikely(!p))
4837 goto out_overflow;
4838 res->do_recall = be32_to_cpup(p);
4839
4840 switch (delegation_type) {
4841 case NFS4_OPEN_DELEGATE_READ:
4842 res->delegation_type = FMODE_READ;
4843 break;
4844 case NFS4_OPEN_DELEGATE_WRITE:
4845 res->delegation_type = FMODE_WRITE|FMODE_READ;
4846 if (decode_space_limit(xdr, &res->maxsize) < 0)
4847 return -EIO;
4848 }
4849 return decode_ace(xdr, NULL, res->server->nfs_client);
4850 out_overflow:
4851 print_overflow_msg(__func__, xdr);
4852 return -EIO;
4853 }
4854
4855 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4856 {
4857 __be32 *p;
4858 uint32_t savewords, bmlen, i;
4859 int status;
4860
4861 status = decode_op_hdr(xdr, OP_OPEN);
4862 if (status != -EIO)
4863 nfs_increment_open_seqid(status, res->seqid);
4864 if (!status)
4865 status = decode_stateid(xdr, &res->stateid);
4866 if (unlikely(status))
4867 return status;
4868
4869 decode_change_info(xdr, &res->cinfo);
4870
4871 p = xdr_inline_decode(xdr, 8);
4872 if (unlikely(!p))
4873 goto out_overflow;
4874 res->rflags = be32_to_cpup(p++);
4875 bmlen = be32_to_cpup(p);
4876 if (bmlen > 10)
4877 goto xdr_error;
4878
4879 p = xdr_inline_decode(xdr, bmlen << 2);
4880 if (unlikely(!p))
4881 goto out_overflow;
4882 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4883 for (i = 0; i < savewords; ++i)
4884 res->attrset[i] = be32_to_cpup(p++);
4885 for (; i < NFS4_BITMAP_SIZE; i++)
4886 res->attrset[i] = 0;
4887
4888 return decode_delegation(xdr, res);
4889 xdr_error:
4890 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4891 return -EIO;
4892 out_overflow:
4893 print_overflow_msg(__func__, xdr);
4894 return -EIO;
4895 }
4896
4897 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4898 {
4899 int status;
4900
4901 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4902 if (status != -EIO)
4903 nfs_increment_open_seqid(status, res->seqid);
4904 if (!status)
4905 status = decode_stateid(xdr, &res->stateid);
4906 return status;
4907 }
4908
4909 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4910 {
4911 int status;
4912
4913 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4914 if (status != -EIO)
4915 nfs_increment_open_seqid(status, res->seqid);
4916 if (!status)
4917 status = decode_stateid(xdr, &res->stateid);
4918 return status;
4919 }
4920
4921 static int decode_putfh(struct xdr_stream *xdr)
4922 {
4923 return decode_op_hdr(xdr, OP_PUTFH);
4924 }
4925
4926 static int decode_putrootfh(struct xdr_stream *xdr)
4927 {
4928 return decode_op_hdr(xdr, OP_PUTROOTFH);
4929 }
4930
4931 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4932 {
4933 __be32 *p;
4934 uint32_t count, eof, recvd;
4935 int status;
4936
4937 status = decode_op_hdr(xdr, OP_READ);
4938 if (status)
4939 return status;
4940 p = xdr_inline_decode(xdr, 8);
4941 if (unlikely(!p))
4942 goto out_overflow;
4943 eof = be32_to_cpup(p++);
4944 count = be32_to_cpup(p);
4945 recvd = xdr_read_pages(xdr, count);
4946 if (count > recvd) {
4947 dprintk("NFS: server cheating in read reply: "
4948 "count %u > recvd %u\n", count, recvd);
4949 count = recvd;
4950 eof = 0;
4951 }
4952 res->eof = eof;
4953 res->count = count;
4954 return 0;
4955 out_overflow:
4956 print_overflow_msg(__func__, xdr);
4957 return -EIO;
4958 }
4959
4960 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4961 {
4962 int status;
4963 __be32 verf[2];
4964
4965 status = decode_op_hdr(xdr, OP_READDIR);
4966 if (!status)
4967 status = decode_verifier(xdr, readdir->verifier.data);
4968 if (unlikely(status))
4969 return status;
4970 memcpy(verf, readdir->verifier.data, sizeof(verf));
4971 dprintk("%s: verifier = %08x:%08x\n",
4972 __func__, verf[0], verf[1]);
4973 return xdr_read_pages(xdr, xdr->buf->page_len);
4974 }
4975
4976 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4977 {
4978 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4979 u32 len, recvd;
4980 __be32 *p;
4981 int status;
4982
4983 status = decode_op_hdr(xdr, OP_READLINK);
4984 if (status)
4985 return status;
4986
4987 /* Convert length of symlink */
4988 p = xdr_inline_decode(xdr, 4);
4989 if (unlikely(!p))
4990 goto out_overflow;
4991 len = be32_to_cpup(p);
4992 if (len >= rcvbuf->page_len || len <= 0) {
4993 dprintk("nfs: server returned giant symlink!\n");
4994 return -ENAMETOOLONG;
4995 }
4996 recvd = xdr_read_pages(xdr, len);
4997 if (recvd < len) {
4998 dprintk("NFS: server cheating in readlink reply: "
4999 "count %u > recvd %u\n", len, recvd);
5000 return -EIO;
5001 }
5002 /*
5003 * The XDR encode routine has set things up so that
5004 * the link text will be copied directly into the
5005 * buffer. We just have to do overflow-checking,
5006 * and and null-terminate the text (the VFS expects
5007 * null-termination).
5008 */
5009 xdr_terminate_string(rcvbuf, len);
5010 return 0;
5011 out_overflow:
5012 print_overflow_msg(__func__, xdr);
5013 return -EIO;
5014 }
5015
5016 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5017 {
5018 int status;
5019
5020 status = decode_op_hdr(xdr, OP_REMOVE);
5021 if (status)
5022 goto out;
5023 status = decode_change_info(xdr, cinfo);
5024 out:
5025 return status;
5026 }
5027
5028 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5029 struct nfs4_change_info *new_cinfo)
5030 {
5031 int status;
5032
5033 status = decode_op_hdr(xdr, OP_RENAME);
5034 if (status)
5035 goto out;
5036 if ((status = decode_change_info(xdr, old_cinfo)))
5037 goto out;
5038 status = decode_change_info(xdr, new_cinfo);
5039 out:
5040 return status;
5041 }
5042
5043 static int decode_renew(struct xdr_stream *xdr)
5044 {
5045 return decode_op_hdr(xdr, OP_RENEW);
5046 }
5047
5048 static int
5049 decode_restorefh(struct xdr_stream *xdr)
5050 {
5051 return decode_op_hdr(xdr, OP_RESTOREFH);
5052 }
5053
5054 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5055 struct nfs_getaclres *res)
5056 {
5057 unsigned int savep;
5058 uint32_t attrlen,
5059 bitmap[3] = {0};
5060 int status;
5061 unsigned int pg_offset;
5062
5063 res->acl_len = 0;
5064 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5065 goto out;
5066
5067 xdr_enter_page(xdr, xdr->buf->page_len);
5068
5069 /* Calculate the offset of the page data */
5070 pg_offset = xdr->buf->head[0].iov_len;
5071
5072 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5073 goto out;
5074 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5075 goto out;
5076
5077 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5078 return -EIO;
5079 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5080
5081 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5082 * are stored with the acl data to handle the problem of
5083 * variable length bitmaps.*/
5084 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5085 res->acl_len = attrlen;
5086
5087 /* Check for receive buffer overflow */
5088 if (res->acl_len > (xdr->nwords << 2) ||
5089 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5090 res->acl_flags |= NFS4_ACL_TRUNC;
5091 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5092 attrlen, xdr->nwords << 2);
5093 }
5094 } else
5095 status = -EOPNOTSUPP;
5096
5097 out:
5098 return status;
5099 }
5100
5101 static int
5102 decode_savefh(struct xdr_stream *xdr)
5103 {
5104 return decode_op_hdr(xdr, OP_SAVEFH);
5105 }
5106
5107 static int decode_setattr(struct xdr_stream *xdr)
5108 {
5109 __be32 *p;
5110 uint32_t bmlen;
5111 int status;
5112
5113 status = decode_op_hdr(xdr, OP_SETATTR);
5114 if (status)
5115 return status;
5116 p = xdr_inline_decode(xdr, 4);
5117 if (unlikely(!p))
5118 goto out_overflow;
5119 bmlen = be32_to_cpup(p);
5120 p = xdr_inline_decode(xdr, bmlen << 2);
5121 if (likely(p))
5122 return 0;
5123 out_overflow:
5124 print_overflow_msg(__func__, xdr);
5125 return -EIO;
5126 }
5127
5128 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5129 {
5130 __be32 *p;
5131 uint32_t opnum;
5132 int32_t nfserr;
5133
5134 p = xdr_inline_decode(xdr, 8);
5135 if (unlikely(!p))
5136 goto out_overflow;
5137 opnum = be32_to_cpup(p++);
5138 if (opnum != OP_SETCLIENTID) {
5139 dprintk("nfs: decode_setclientid: Server returned operation"
5140 " %d\n", opnum);
5141 return -EIO;
5142 }
5143 nfserr = be32_to_cpup(p);
5144 if (nfserr == NFS_OK) {
5145 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5146 if (unlikely(!p))
5147 goto out_overflow;
5148 p = xdr_decode_hyper(p, &res->clientid);
5149 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5150 } else if (nfserr == NFSERR_CLID_INUSE) {
5151 uint32_t len;
5152
5153 /* skip netid string */
5154 p = xdr_inline_decode(xdr, 4);
5155 if (unlikely(!p))
5156 goto out_overflow;
5157 len = be32_to_cpup(p);
5158 p = xdr_inline_decode(xdr, len);
5159 if (unlikely(!p))
5160 goto out_overflow;
5161
5162 /* skip uaddr string */
5163 p = xdr_inline_decode(xdr, 4);
5164 if (unlikely(!p))
5165 goto out_overflow;
5166 len = be32_to_cpup(p);
5167 p = xdr_inline_decode(xdr, len);
5168 if (unlikely(!p))
5169 goto out_overflow;
5170 return -NFSERR_CLID_INUSE;
5171 } else
5172 return nfs4_stat_to_errno(nfserr);
5173
5174 return 0;
5175 out_overflow:
5176 print_overflow_msg(__func__, xdr);
5177 return -EIO;
5178 }
5179
5180 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5181 {
5182 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5183 }
5184
5185 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5186 {
5187 __be32 *p;
5188 int status;
5189
5190 status = decode_op_hdr(xdr, OP_WRITE);
5191 if (status)
5192 return status;
5193
5194 p = xdr_inline_decode(xdr, 8);
5195 if (unlikely(!p))
5196 goto out_overflow;
5197 res->count = be32_to_cpup(p++);
5198 res->verf->committed = be32_to_cpup(p++);
5199 return decode_write_verifier(xdr, &res->verf->verifier);
5200 out_overflow:
5201 print_overflow_msg(__func__, xdr);
5202 return -EIO;
5203 }
5204
5205 static int decode_delegreturn(struct xdr_stream *xdr)
5206 {
5207 return decode_op_hdr(xdr, OP_DELEGRETURN);
5208 }
5209
5210 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5211 {
5212 __be32 *p;
5213
5214 p = xdr_inline_decode(xdr, 4);
5215 if (unlikely(!p))
5216 goto out_overflow;
5217 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5218 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5219 goto out_err;
5220
5221 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5222 if (unlikely(!p))
5223 goto out_overflow;
5224 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5225
5226 p = xdr_inline_decode(xdr, 8);
5227 if (unlikely(!p))
5228 goto out_overflow;
5229 flavor->gss.qop4 = be32_to_cpup(p++);
5230 flavor->gss.service = be32_to_cpup(p);
5231
5232 return 0;
5233
5234 out_overflow:
5235 print_overflow_msg(__func__, xdr);
5236 return -EIO;
5237 out_err:
5238 return -EINVAL;
5239 }
5240
5241 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5242 {
5243 struct nfs4_secinfo_flavor *sec_flavor;
5244 int status;
5245 __be32 *p;
5246 int i, num_flavors;
5247
5248 p = xdr_inline_decode(xdr, 4);
5249 if (unlikely(!p))
5250 goto out_overflow;
5251
5252 res->flavors->num_flavors = 0;
5253 num_flavors = be32_to_cpup(p);
5254
5255 for (i = 0; i < num_flavors; i++) {
5256 sec_flavor = &res->flavors->flavors[i];
5257 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5258 break;
5259
5260 p = xdr_inline_decode(xdr, 4);
5261 if (unlikely(!p))
5262 goto out_overflow;
5263 sec_flavor->flavor = be32_to_cpup(p);
5264
5265 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5266 status = decode_secinfo_gss(xdr, sec_flavor);
5267 if (status)
5268 goto out;
5269 }
5270 res->flavors->num_flavors++;
5271 }
5272
5273 status = 0;
5274 out:
5275 return status;
5276 out_overflow:
5277 print_overflow_msg(__func__, xdr);
5278 return -EIO;
5279 }
5280
5281 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5282 {
5283 int status = decode_op_hdr(xdr, OP_SECINFO);
5284 if (status)
5285 return status;
5286 return decode_secinfo_common(xdr, res);
5287 }
5288
5289 #if defined(CONFIG_NFS_V4_1)
5290 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5291 {
5292 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5293 if (status)
5294 return status;
5295 return decode_secinfo_common(xdr, res);
5296 }
5297
5298 static int decode_exchange_id(struct xdr_stream *xdr,
5299 struct nfs41_exchange_id_res *res)
5300 {
5301 __be32 *p;
5302 uint32_t dummy;
5303 char *dummy_str;
5304 int status;
5305 uint32_t impl_id_count;
5306
5307 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5308 if (status)
5309 return status;
5310
5311 p = xdr_inline_decode(xdr, 8);
5312 if (unlikely(!p))
5313 goto out_overflow;
5314 xdr_decode_hyper(p, &res->clientid);
5315 p = xdr_inline_decode(xdr, 12);
5316 if (unlikely(!p))
5317 goto out_overflow;
5318 res->seqid = be32_to_cpup(p++);
5319 res->flags = be32_to_cpup(p++);
5320
5321 /* We ask for SP4_NONE */
5322 dummy = be32_to_cpup(p);
5323 if (dummy != SP4_NONE)
5324 return -EIO;
5325
5326 /* server_owner4.so_minor_id */
5327 p = xdr_inline_decode(xdr, 8);
5328 if (unlikely(!p))
5329 goto out_overflow;
5330 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5331
5332 /* server_owner4.so_major_id */
5333 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5334 if (unlikely(status))
5335 return status;
5336 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5337 return -EIO;
5338 memcpy(res->server_owner->major_id, dummy_str, dummy);
5339 res->server_owner->major_id_sz = dummy;
5340
5341 /* server_scope4 */
5342 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5343 if (unlikely(status))
5344 return status;
5345 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5346 return -EIO;
5347 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5348 res->server_scope->server_scope_sz = dummy;
5349
5350 /* Implementation Id */
5351 p = xdr_inline_decode(xdr, 4);
5352 if (unlikely(!p))
5353 goto out_overflow;
5354 impl_id_count = be32_to_cpup(p++);
5355
5356 if (impl_id_count) {
5357 /* nii_domain */
5358 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5359 if (unlikely(status))
5360 return status;
5361 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5362 return -EIO;
5363 memcpy(res->impl_id->domain, dummy_str, dummy);
5364
5365 /* nii_name */
5366 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5367 if (unlikely(status))
5368 return status;
5369 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5370 return -EIO;
5371 memcpy(res->impl_id->name, dummy_str, dummy);
5372
5373 /* nii_date */
5374 p = xdr_inline_decode(xdr, 12);
5375 if (unlikely(!p))
5376 goto out_overflow;
5377 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5378 res->impl_id->date.nseconds = be32_to_cpup(p);
5379
5380 /* if there's more than one entry, ignore the rest */
5381 }
5382 return 0;
5383 out_overflow:
5384 print_overflow_msg(__func__, xdr);
5385 return -EIO;
5386 }
5387
5388 static int decode_chan_attrs(struct xdr_stream *xdr,
5389 struct nfs4_channel_attrs *attrs)
5390 {
5391 __be32 *p;
5392 u32 nr_attrs, val;
5393
5394 p = xdr_inline_decode(xdr, 28);
5395 if (unlikely(!p))
5396 goto out_overflow;
5397 val = be32_to_cpup(p++); /* headerpadsz */
5398 if (val)
5399 return -EINVAL; /* no support for header padding yet */
5400 attrs->max_rqst_sz = be32_to_cpup(p++);
5401 attrs->max_resp_sz = be32_to_cpup(p++);
5402 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5403 attrs->max_ops = be32_to_cpup(p++);
5404 attrs->max_reqs = be32_to_cpup(p++);
5405 nr_attrs = be32_to_cpup(p);
5406 if (unlikely(nr_attrs > 1)) {
5407 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5408 "count %u\n", __func__, nr_attrs);
5409 return -EINVAL;
5410 }
5411 if (nr_attrs == 1) {
5412 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5413 if (unlikely(!p))
5414 goto out_overflow;
5415 }
5416 return 0;
5417 out_overflow:
5418 print_overflow_msg(__func__, xdr);
5419 return -EIO;
5420 }
5421
5422 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5423 {
5424 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5425 }
5426
5427 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5428 struct nfs41_bind_conn_to_session_res *res)
5429 {
5430 __be32 *p;
5431 int status;
5432
5433 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5434 if (!status)
5435 status = decode_sessionid(xdr, &res->session->sess_id);
5436 if (unlikely(status))
5437 return status;
5438
5439 /* dir flags, rdma mode bool */
5440 p = xdr_inline_decode(xdr, 8);
5441 if (unlikely(!p))
5442 goto out_overflow;
5443
5444 res->dir = be32_to_cpup(p++);
5445 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5446 return -EIO;
5447 if (be32_to_cpup(p) == 0)
5448 res->use_conn_in_rdma_mode = false;
5449 else
5450 res->use_conn_in_rdma_mode = true;
5451
5452 return 0;
5453 out_overflow:
5454 print_overflow_msg(__func__, xdr);
5455 return -EIO;
5456 }
5457
5458 static int decode_create_session(struct xdr_stream *xdr,
5459 struct nfs41_create_session_res *res)
5460 {
5461 __be32 *p;
5462 int status;
5463 struct nfs_client *clp = res->client;
5464 struct nfs4_session *session = clp->cl_session;
5465
5466 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5467 if (!status)
5468 status = decode_sessionid(xdr, &session->sess_id);
5469 if (unlikely(status))
5470 return status;
5471
5472 /* seqid, flags */
5473 p = xdr_inline_decode(xdr, 8);
5474 if (unlikely(!p))
5475 goto out_overflow;
5476 clp->cl_seqid = be32_to_cpup(p++);
5477 session->flags = be32_to_cpup(p);
5478
5479 /* Channel attributes */
5480 status = decode_chan_attrs(xdr, &session->fc_attrs);
5481 if (!status)
5482 status = decode_chan_attrs(xdr, &session->bc_attrs);
5483 return status;
5484 out_overflow:
5485 print_overflow_msg(__func__, xdr);
5486 return -EIO;
5487 }
5488
5489 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5490 {
5491 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5492 }
5493
5494 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5495 {
5496 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5497 }
5498
5499 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5500 {
5501 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5502 }
5503 #endif /* CONFIG_NFS_V4_1 */
5504
5505 static int decode_sequence(struct xdr_stream *xdr,
5506 struct nfs4_sequence_res *res,
5507 struct rpc_rqst *rqstp)
5508 {
5509 #if defined(CONFIG_NFS_V4_1)
5510 struct nfs4_session *session;
5511 struct nfs4_sessionid id;
5512 u32 dummy;
5513 int status;
5514 __be32 *p;
5515
5516 if (res->sr_slot == NULL)
5517 return 0;
5518
5519 status = decode_op_hdr(xdr, OP_SEQUENCE);
5520 if (!status)
5521 status = decode_sessionid(xdr, &id);
5522 if (unlikely(status))
5523 goto out_err;
5524
5525 /*
5526 * If the server returns different values for sessionID, slotID or
5527 * sequence number, the server is looney tunes.
5528 */
5529 status = -EREMOTEIO;
5530 session = res->sr_slot->table->session;
5531
5532 if (memcmp(id.data, session->sess_id.data,
5533 NFS4_MAX_SESSIONID_LEN)) {
5534 dprintk("%s Invalid session id\n", __func__);
5535 goto out_err;
5536 }
5537
5538 p = xdr_inline_decode(xdr, 20);
5539 if (unlikely(!p))
5540 goto out_overflow;
5541
5542 /* seqid */
5543 dummy = be32_to_cpup(p++);
5544 if (dummy != res->sr_slot->seq_nr) {
5545 dprintk("%s Invalid sequence number\n", __func__);
5546 goto out_err;
5547 }
5548 /* slot id */
5549 dummy = be32_to_cpup(p++);
5550 if (dummy != res->sr_slot->slot_nr) {
5551 dprintk("%s Invalid slot id\n", __func__);
5552 goto out_err;
5553 }
5554 /* highest slot id - currently not processed */
5555 dummy = be32_to_cpup(p++);
5556 /* target highest slot id - currently not processed */
5557 dummy = be32_to_cpup(p++);
5558 /* result flags */
5559 res->sr_status_flags = be32_to_cpup(p);
5560 status = 0;
5561 out_err:
5562 res->sr_status = status;
5563 return status;
5564 out_overflow:
5565 print_overflow_msg(__func__, xdr);
5566 status = -EIO;
5567 goto out_err;
5568 #else /* CONFIG_NFS_V4_1 */
5569 return 0;
5570 #endif /* CONFIG_NFS_V4_1 */
5571 }
5572
5573 #if defined(CONFIG_NFS_V4_1)
5574 /*
5575 * TODO: Need to handle case when EOF != true;
5576 */
5577 static int decode_getdevicelist(struct xdr_stream *xdr,
5578 struct pnfs_devicelist *res)
5579 {
5580 __be32 *p;
5581 int status, i;
5582 nfs4_verifier verftemp;
5583
5584 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5585 if (status)
5586 return status;
5587
5588 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5589 if (unlikely(!p))
5590 goto out_overflow;
5591
5592 /* TODO: Skip cookie for now */
5593 p += 2;
5594
5595 /* Read verifier */
5596 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5597
5598 res->num_devs = be32_to_cpup(p);
5599
5600 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5601
5602 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5603 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5604 __func__, res->num_devs);
5605 return -EIO;
5606 }
5607
5608 p = xdr_inline_decode(xdr,
5609 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5610 if (unlikely(!p))
5611 goto out_overflow;
5612 for (i = 0; i < res->num_devs; i++)
5613 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5614 NFS4_DEVICEID4_SIZE);
5615 res->eof = be32_to_cpup(p);
5616 return 0;
5617 out_overflow:
5618 print_overflow_msg(__func__, xdr);
5619 return -EIO;
5620 }
5621
5622 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5623 struct pnfs_device *pdev)
5624 {
5625 __be32 *p;
5626 uint32_t len, type;
5627 int status;
5628
5629 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5630 if (status) {
5631 if (status == -ETOOSMALL) {
5632 p = xdr_inline_decode(xdr, 4);
5633 if (unlikely(!p))
5634 goto out_overflow;
5635 pdev->mincount = be32_to_cpup(p);
5636 dprintk("%s: Min count too small. mincnt = %u\n",
5637 __func__, pdev->mincount);
5638 }
5639 return status;
5640 }
5641
5642 p = xdr_inline_decode(xdr, 8);
5643 if (unlikely(!p))
5644 goto out_overflow;
5645 type = be32_to_cpup(p++);
5646 if (type != pdev->layout_type) {
5647 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5648 __func__, pdev->layout_type, type);
5649 return -EINVAL;
5650 }
5651 /*
5652 * Get the length of the opaque device_addr4. xdr_read_pages places
5653 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5654 * and places the remaining xdr data in xdr_buf->tail
5655 */
5656 pdev->mincount = be32_to_cpup(p);
5657 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5658 goto out_overflow;
5659
5660 /* Parse notification bitmap, verifying that it is zero. */
5661 p = xdr_inline_decode(xdr, 4);
5662 if (unlikely(!p))
5663 goto out_overflow;
5664 len = be32_to_cpup(p);
5665 if (len) {
5666 uint32_t i;
5667
5668 p = xdr_inline_decode(xdr, 4 * len);
5669 if (unlikely(!p))
5670 goto out_overflow;
5671 for (i = 0; i < len; i++, p++) {
5672 if (be32_to_cpup(p)) {
5673 dprintk("%s: notifications not supported\n",
5674 __func__);
5675 return -EIO;
5676 }
5677 }
5678 }
5679 return 0;
5680 out_overflow:
5681 print_overflow_msg(__func__, xdr);
5682 return -EIO;
5683 }
5684
5685 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5686 struct nfs4_layoutget_res *res)
5687 {
5688 __be32 *p;
5689 int status;
5690 u32 layout_count;
5691 u32 recvd;
5692
5693 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5694 if (status)
5695 return status;
5696 p = xdr_inline_decode(xdr, 4);
5697 if (unlikely(!p))
5698 goto out_overflow;
5699 res->return_on_close = be32_to_cpup(p);
5700 decode_stateid(xdr, &res->stateid);
5701 p = xdr_inline_decode(xdr, 4);
5702 if (unlikely(!p))
5703 goto out_overflow;
5704 layout_count = be32_to_cpup(p);
5705 if (!layout_count) {
5706 dprintk("%s: server responded with empty layout array\n",
5707 __func__);
5708 return -EINVAL;
5709 }
5710
5711 p = xdr_inline_decode(xdr, 28);
5712 if (unlikely(!p))
5713 goto out_overflow;
5714 p = xdr_decode_hyper(p, &res->range.offset);
5715 p = xdr_decode_hyper(p, &res->range.length);
5716 res->range.iomode = be32_to_cpup(p++);
5717 res->type = be32_to_cpup(p++);
5718 res->layoutp->len = be32_to_cpup(p);
5719
5720 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5721 __func__,
5722 (unsigned long)res->range.offset,
5723 (unsigned long)res->range.length,
5724 res->range.iomode,
5725 res->type,
5726 res->layoutp->len);
5727
5728 recvd = xdr_read_pages(xdr, res->layoutp->len);
5729 if (res->layoutp->len > recvd) {
5730 dprintk("NFS: server cheating in layoutget reply: "
5731 "layout len %u > recvd %u\n",
5732 res->layoutp->len, recvd);
5733 return -EINVAL;
5734 }
5735
5736 if (layout_count > 1) {
5737 /* We only handle a length one array at the moment. Any
5738 * further entries are just ignored. Note that this means
5739 * the client may see a response that is less than the
5740 * minimum it requested.
5741 */
5742 dprintk("%s: server responded with %d layouts, dropping tail\n",
5743 __func__, layout_count);
5744 }
5745
5746 return 0;
5747 out_overflow:
5748 print_overflow_msg(__func__, xdr);
5749 return -EIO;
5750 }
5751
5752 static int decode_layoutreturn(struct xdr_stream *xdr,
5753 struct nfs4_layoutreturn_res *res)
5754 {
5755 __be32 *p;
5756 int status;
5757
5758 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5759 if (status)
5760 return status;
5761 p = xdr_inline_decode(xdr, 4);
5762 if (unlikely(!p))
5763 goto out_overflow;
5764 res->lrs_present = be32_to_cpup(p);
5765 if (res->lrs_present)
5766 status = decode_stateid(xdr, &res->stateid);
5767 return status;
5768 out_overflow:
5769 print_overflow_msg(__func__, xdr);
5770 return -EIO;
5771 }
5772
5773 static int decode_layoutcommit(struct xdr_stream *xdr,
5774 struct rpc_rqst *req,
5775 struct nfs4_layoutcommit_res *res)
5776 {
5777 __be32 *p;
5778 __u32 sizechanged;
5779 int status;
5780
5781 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5782 res->status = status;
5783 if (status)
5784 return status;
5785
5786 p = xdr_inline_decode(xdr, 4);
5787 if (unlikely(!p))
5788 goto out_overflow;
5789 sizechanged = be32_to_cpup(p);
5790
5791 if (sizechanged) {
5792 /* throw away new size */
5793 p = xdr_inline_decode(xdr, 8);
5794 if (unlikely(!p))
5795 goto out_overflow;
5796 }
5797 return 0;
5798 out_overflow:
5799 print_overflow_msg(__func__, xdr);
5800 return -EIO;
5801 }
5802
5803 static int decode_test_stateid(struct xdr_stream *xdr,
5804 struct nfs41_test_stateid_res *res)
5805 {
5806 __be32 *p;
5807 int status;
5808 int num_res;
5809
5810 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5811 if (status)
5812 return status;
5813
5814 p = xdr_inline_decode(xdr, 4);
5815 if (unlikely(!p))
5816 goto out_overflow;
5817 num_res = be32_to_cpup(p++);
5818 if (num_res != 1)
5819 goto out;
5820
5821 p = xdr_inline_decode(xdr, 4);
5822 if (unlikely(!p))
5823 goto out_overflow;
5824 res->status = be32_to_cpup(p++);
5825
5826 return status;
5827 out_overflow:
5828 print_overflow_msg(__func__, xdr);
5829 out:
5830 return -EIO;
5831 }
5832
5833 static int decode_free_stateid(struct xdr_stream *xdr,
5834 struct nfs41_free_stateid_res *res)
5835 {
5836 __be32 *p;
5837 int status;
5838
5839 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5840 if (status)
5841 return status;
5842
5843 p = xdr_inline_decode(xdr, 4);
5844 if (unlikely(!p))
5845 goto out_overflow;
5846 res->status = be32_to_cpup(p++);
5847 return res->status;
5848 out_overflow:
5849 print_overflow_msg(__func__, xdr);
5850 return -EIO;
5851 }
5852 #endif /* CONFIG_NFS_V4_1 */
5853
5854 /*
5855 * END OF "GENERIC" DECODE ROUTINES.
5856 */
5857
5858 /*
5859 * Decode OPEN_DOWNGRADE response
5860 */
5861 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5862 struct xdr_stream *xdr,
5863 struct nfs_closeres *res)
5864 {
5865 struct compound_hdr hdr;
5866 int status;
5867
5868 status = decode_compound_hdr(xdr, &hdr);
5869 if (status)
5870 goto out;
5871 status = decode_sequence(xdr, &res->seq_res, rqstp);
5872 if (status)
5873 goto out;
5874 status = decode_putfh(xdr);
5875 if (status)
5876 goto out;
5877 status = decode_open_downgrade(xdr, res);
5878 if (status != 0)
5879 goto out;
5880 decode_getfattr(xdr, res->fattr, res->server);
5881 out:
5882 return status;
5883 }
5884
5885 /*
5886 * Decode ACCESS response
5887 */
5888 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5889 struct nfs4_accessres *res)
5890 {
5891 struct compound_hdr hdr;
5892 int status;
5893
5894 status = decode_compound_hdr(xdr, &hdr);
5895 if (status)
5896 goto out;
5897 status = decode_sequence(xdr, &res->seq_res, rqstp);
5898 if (status)
5899 goto out;
5900 status = decode_putfh(xdr);
5901 if (status != 0)
5902 goto out;
5903 status = decode_access(xdr, &res->supported, &res->access);
5904 if (status != 0)
5905 goto out;
5906 decode_getfattr(xdr, res->fattr, res->server);
5907 out:
5908 return status;
5909 }
5910
5911 /*
5912 * Decode LOOKUP response
5913 */
5914 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5915 struct nfs4_lookup_res *res)
5916 {
5917 struct compound_hdr hdr;
5918 int status;
5919
5920 status = decode_compound_hdr(xdr, &hdr);
5921 if (status)
5922 goto out;
5923 status = decode_sequence(xdr, &res->seq_res, rqstp);
5924 if (status)
5925 goto out;
5926 status = decode_putfh(xdr);
5927 if (status)
5928 goto out;
5929 status = decode_lookup(xdr);
5930 if (status)
5931 goto out;
5932 status = decode_getfh(xdr, res->fh);
5933 if (status)
5934 goto out;
5935 status = decode_getfattr(xdr, res->fattr, res->server);
5936 out:
5937 return status;
5938 }
5939
5940 /*
5941 * Decode LOOKUP_ROOT response
5942 */
5943 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5944 struct xdr_stream *xdr,
5945 struct nfs4_lookup_res *res)
5946 {
5947 struct compound_hdr hdr;
5948 int status;
5949
5950 status = decode_compound_hdr(xdr, &hdr);
5951 if (status)
5952 goto out;
5953 status = decode_sequence(xdr, &res->seq_res, rqstp);
5954 if (status)
5955 goto out;
5956 status = decode_putrootfh(xdr);
5957 if (status)
5958 goto out;
5959 status = decode_getfh(xdr, res->fh);
5960 if (status == 0)
5961 status = decode_getfattr(xdr, res->fattr, res->server);
5962 out:
5963 return status;
5964 }
5965
5966 /*
5967 * Decode REMOVE response
5968 */
5969 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5970 struct nfs_removeres *res)
5971 {
5972 struct compound_hdr hdr;
5973 int status;
5974
5975 status = decode_compound_hdr(xdr, &hdr);
5976 if (status)
5977 goto out;
5978 status = decode_sequence(xdr, &res->seq_res, rqstp);
5979 if (status)
5980 goto out;
5981 status = decode_putfh(xdr);
5982 if (status)
5983 goto out;
5984 status = decode_remove(xdr, &res->cinfo);
5985 out:
5986 return status;
5987 }
5988
5989 /*
5990 * Decode RENAME response
5991 */
5992 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5993 struct nfs_renameres *res)
5994 {
5995 struct compound_hdr hdr;
5996 int status;
5997
5998 status = decode_compound_hdr(xdr, &hdr);
5999 if (status)
6000 goto out;
6001 status = decode_sequence(xdr, &res->seq_res, rqstp);
6002 if (status)
6003 goto out;
6004 status = decode_putfh(xdr);
6005 if (status)
6006 goto out;
6007 status = decode_savefh(xdr);
6008 if (status)
6009 goto out;
6010 status = decode_putfh(xdr);
6011 if (status)
6012 goto out;
6013 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6014 out:
6015 return status;
6016 }
6017
6018 /*
6019 * Decode LINK response
6020 */
6021 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6022 struct nfs4_link_res *res)
6023 {
6024 struct compound_hdr hdr;
6025 int status;
6026
6027 status = decode_compound_hdr(xdr, &hdr);
6028 if (status)
6029 goto out;
6030 status = decode_sequence(xdr, &res->seq_res, rqstp);
6031 if (status)
6032 goto out;
6033 status = decode_putfh(xdr);
6034 if (status)
6035 goto out;
6036 status = decode_savefh(xdr);
6037 if (status)
6038 goto out;
6039 status = decode_putfh(xdr);
6040 if (status)
6041 goto out;
6042 status = decode_link(xdr, &res->cinfo);
6043 if (status)
6044 goto out;
6045 /*
6046 * Note order: OP_LINK leaves the directory as the current
6047 * filehandle.
6048 */
6049 status = decode_restorefh(xdr);
6050 if (status)
6051 goto out;
6052 decode_getfattr(xdr, res->fattr, res->server);
6053 out:
6054 return status;
6055 }
6056
6057 /*
6058 * Decode CREATE response
6059 */
6060 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6061 struct nfs4_create_res *res)
6062 {
6063 struct compound_hdr hdr;
6064 int status;
6065
6066 status = decode_compound_hdr(xdr, &hdr);
6067 if (status)
6068 goto out;
6069 status = decode_sequence(xdr, &res->seq_res, rqstp);
6070 if (status)
6071 goto out;
6072 status = decode_putfh(xdr);
6073 if (status)
6074 goto out;
6075 status = decode_create(xdr, &res->dir_cinfo);
6076 if (status)
6077 goto out;
6078 status = decode_getfh(xdr, res->fh);
6079 if (status)
6080 goto out;
6081 decode_getfattr(xdr, res->fattr, res->server);
6082 out:
6083 return status;
6084 }
6085
6086 /*
6087 * Decode SYMLINK response
6088 */
6089 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6090 struct nfs4_create_res *res)
6091 {
6092 return nfs4_xdr_dec_create(rqstp, xdr, res);
6093 }
6094
6095 /*
6096 * Decode GETATTR response
6097 */
6098 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6099 struct nfs4_getattr_res *res)
6100 {
6101 struct compound_hdr hdr;
6102 int status;
6103
6104 status = decode_compound_hdr(xdr, &hdr);
6105 if (status)
6106 goto out;
6107 status = decode_sequence(xdr, &res->seq_res, rqstp);
6108 if (status)
6109 goto out;
6110 status = decode_putfh(xdr);
6111 if (status)
6112 goto out;
6113 status = decode_getfattr(xdr, res->fattr, res->server);
6114 out:
6115 return status;
6116 }
6117
6118 /*
6119 * Encode an SETACL request
6120 */
6121 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6122 struct nfs_setaclargs *args)
6123 {
6124 struct compound_hdr hdr = {
6125 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6126 };
6127
6128 encode_compound_hdr(xdr, req, &hdr);
6129 encode_sequence(xdr, &args->seq_args, &hdr);
6130 encode_putfh(xdr, args->fh, &hdr);
6131 encode_setacl(xdr, args, &hdr);
6132 encode_nops(&hdr);
6133 }
6134
6135 /*
6136 * Decode SETACL response
6137 */
6138 static int
6139 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6140 struct nfs_setaclres *res)
6141 {
6142 struct compound_hdr hdr;
6143 int status;
6144
6145 status = decode_compound_hdr(xdr, &hdr);
6146 if (status)
6147 goto out;
6148 status = decode_sequence(xdr, &res->seq_res, rqstp);
6149 if (status)
6150 goto out;
6151 status = decode_putfh(xdr);
6152 if (status)
6153 goto out;
6154 status = decode_setattr(xdr);
6155 out:
6156 return status;
6157 }
6158
6159 /*
6160 * Decode GETACL response
6161 */
6162 static int
6163 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6164 struct nfs_getaclres *res)
6165 {
6166 struct compound_hdr hdr;
6167 int status;
6168
6169 if (res->acl_scratch != NULL) {
6170 void *p = page_address(res->acl_scratch);
6171 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6172 }
6173 status = decode_compound_hdr(xdr, &hdr);
6174 if (status)
6175 goto out;
6176 status = decode_sequence(xdr, &res->seq_res, rqstp);
6177 if (status)
6178 goto out;
6179 status = decode_putfh(xdr);
6180 if (status)
6181 goto out;
6182 status = decode_getacl(xdr, rqstp, res);
6183
6184 out:
6185 return status;
6186 }
6187
6188 /*
6189 * Decode CLOSE response
6190 */
6191 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6192 struct nfs_closeres *res)
6193 {
6194 struct compound_hdr hdr;
6195 int status;
6196
6197 status = decode_compound_hdr(xdr, &hdr);
6198 if (status)
6199 goto out;
6200 status = decode_sequence(xdr, &res->seq_res, rqstp);
6201 if (status)
6202 goto out;
6203 status = decode_putfh(xdr);
6204 if (status)
6205 goto out;
6206 status = decode_close(xdr, res);
6207 if (status != 0)
6208 goto out;
6209 /*
6210 * Note: Server may do delete on close for this file
6211 * in which case the getattr call will fail with
6212 * an ESTALE error. Shouldn't be a problem,
6213 * though, since fattr->valid will remain unset.
6214 */
6215 decode_getfattr(xdr, res->fattr, res->server);
6216 out:
6217 return status;
6218 }
6219
6220 /*
6221 * Decode OPEN response
6222 */
6223 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6224 struct nfs_openres *res)
6225 {
6226 struct compound_hdr hdr;
6227 int status;
6228
6229 status = decode_compound_hdr(xdr, &hdr);
6230 if (status)
6231 goto out;
6232 status = decode_sequence(xdr, &res->seq_res, rqstp);
6233 if (status)
6234 goto out;
6235 status = decode_putfh(xdr);
6236 if (status)
6237 goto out;
6238 status = decode_open(xdr, res);
6239 if (status)
6240 goto out;
6241 status = decode_getfh(xdr, &res->fh);
6242 if (status)
6243 goto out;
6244 if (res->access_request)
6245 decode_access(xdr, &res->access_supported, &res->access_result);
6246 decode_getfattr(xdr, res->f_attr, res->server);
6247 out:
6248 return status;
6249 }
6250
6251 /*
6252 * Decode OPEN_CONFIRM response
6253 */
6254 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6255 struct xdr_stream *xdr,
6256 struct nfs_open_confirmres *res)
6257 {
6258 struct compound_hdr hdr;
6259 int status;
6260
6261 status = decode_compound_hdr(xdr, &hdr);
6262 if (status)
6263 goto out;
6264 status = decode_putfh(xdr);
6265 if (status)
6266 goto out;
6267 status = decode_open_confirm(xdr, res);
6268 out:
6269 return status;
6270 }
6271
6272 /*
6273 * Decode OPEN response
6274 */
6275 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6276 struct xdr_stream *xdr,
6277 struct nfs_openres *res)
6278 {
6279 struct compound_hdr hdr;
6280 int status;
6281
6282 status = decode_compound_hdr(xdr, &hdr);
6283 if (status)
6284 goto out;
6285 status = decode_sequence(xdr, &res->seq_res, rqstp);
6286 if (status)
6287 goto out;
6288 status = decode_putfh(xdr);
6289 if (status)
6290 goto out;
6291 status = decode_open(xdr, res);
6292 if (status)
6293 goto out;
6294 if (res->access_request)
6295 decode_access(xdr, &res->access_supported, &res->access_result);
6296 decode_getfattr(xdr, res->f_attr, res->server);
6297 out:
6298 return status;
6299 }
6300
6301 /*
6302 * Decode SETATTR response
6303 */
6304 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6305 struct xdr_stream *xdr,
6306 struct nfs_setattrres *res)
6307 {
6308 struct compound_hdr hdr;
6309 int status;
6310
6311 status = decode_compound_hdr(xdr, &hdr);
6312 if (status)
6313 goto out;
6314 status = decode_sequence(xdr, &res->seq_res, rqstp);
6315 if (status)
6316 goto out;
6317 status = decode_putfh(xdr);
6318 if (status)
6319 goto out;
6320 status = decode_setattr(xdr);
6321 if (status)
6322 goto out;
6323 decode_getfattr(xdr, res->fattr, res->server);
6324 out:
6325 return status;
6326 }
6327
6328 /*
6329 * Decode LOCK response
6330 */
6331 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6332 struct nfs_lock_res *res)
6333 {
6334 struct compound_hdr hdr;
6335 int status;
6336
6337 status = decode_compound_hdr(xdr, &hdr);
6338 if (status)
6339 goto out;
6340 status = decode_sequence(xdr, &res->seq_res, rqstp);
6341 if (status)
6342 goto out;
6343 status = decode_putfh(xdr);
6344 if (status)
6345 goto out;
6346 status = decode_lock(xdr, res);
6347 out:
6348 return status;
6349 }
6350
6351 /*
6352 * Decode LOCKT response
6353 */
6354 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6355 struct nfs_lockt_res *res)
6356 {
6357 struct compound_hdr hdr;
6358 int status;
6359
6360 status = decode_compound_hdr(xdr, &hdr);
6361 if (status)
6362 goto out;
6363 status = decode_sequence(xdr, &res->seq_res, rqstp);
6364 if (status)
6365 goto out;
6366 status = decode_putfh(xdr);
6367 if (status)
6368 goto out;
6369 status = decode_lockt(xdr, res);
6370 out:
6371 return status;
6372 }
6373
6374 /*
6375 * Decode LOCKU response
6376 */
6377 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6378 struct nfs_locku_res *res)
6379 {
6380 struct compound_hdr hdr;
6381 int status;
6382
6383 status = decode_compound_hdr(xdr, &hdr);
6384 if (status)
6385 goto out;
6386 status = decode_sequence(xdr, &res->seq_res, rqstp);
6387 if (status)
6388 goto out;
6389 status = decode_putfh(xdr);
6390 if (status)
6391 goto out;
6392 status = decode_locku(xdr, res);
6393 out:
6394 return status;
6395 }
6396
6397 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6398 struct xdr_stream *xdr, void *dummy)
6399 {
6400 struct compound_hdr hdr;
6401 int status;
6402
6403 status = decode_compound_hdr(xdr, &hdr);
6404 if (!status)
6405 status = decode_release_lockowner(xdr);
6406 return status;
6407 }
6408
6409 /*
6410 * Decode READLINK response
6411 */
6412 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6413 struct xdr_stream *xdr,
6414 struct nfs4_readlink_res *res)
6415 {
6416 struct compound_hdr hdr;
6417 int status;
6418
6419 status = decode_compound_hdr(xdr, &hdr);
6420 if (status)
6421 goto out;
6422 status = decode_sequence(xdr, &res->seq_res, rqstp);
6423 if (status)
6424 goto out;
6425 status = decode_putfh(xdr);
6426 if (status)
6427 goto out;
6428 status = decode_readlink(xdr, rqstp);
6429 out:
6430 return status;
6431 }
6432
6433 /*
6434 * Decode READDIR response
6435 */
6436 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6437 struct nfs4_readdir_res *res)
6438 {
6439 struct compound_hdr hdr;
6440 int status;
6441
6442 status = decode_compound_hdr(xdr, &hdr);
6443 if (status)
6444 goto out;
6445 status = decode_sequence(xdr, &res->seq_res, rqstp);
6446 if (status)
6447 goto out;
6448 status = decode_putfh(xdr);
6449 if (status)
6450 goto out;
6451 status = decode_readdir(xdr, rqstp, res);
6452 out:
6453 return status;
6454 }
6455
6456 /*
6457 * Decode Read response
6458 */
6459 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6460 struct nfs_readres *res)
6461 {
6462 struct compound_hdr hdr;
6463 int status;
6464
6465 status = decode_compound_hdr(xdr, &hdr);
6466 if (status)
6467 goto out;
6468 status = decode_sequence(xdr, &res->seq_res, rqstp);
6469 if (status)
6470 goto out;
6471 status = decode_putfh(xdr);
6472 if (status)
6473 goto out;
6474 status = decode_read(xdr, rqstp, res);
6475 if (!status)
6476 status = res->count;
6477 out:
6478 return status;
6479 }
6480
6481 /*
6482 * Decode WRITE response
6483 */
6484 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6485 struct nfs_writeres *res)
6486 {
6487 struct compound_hdr hdr;
6488 int status;
6489
6490 status = decode_compound_hdr(xdr, &hdr);
6491 if (status)
6492 goto out;
6493 status = decode_sequence(xdr, &res->seq_res, rqstp);
6494 if (status)
6495 goto out;
6496 status = decode_putfh(xdr);
6497 if (status)
6498 goto out;
6499 status = decode_write(xdr, res);
6500 if (status)
6501 goto out;
6502 if (res->fattr)
6503 decode_getfattr(xdr, res->fattr, res->server);
6504 if (!status)
6505 status = res->count;
6506 out:
6507 return status;
6508 }
6509
6510 /*
6511 * Decode COMMIT response
6512 */
6513 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6514 struct nfs_commitres *res)
6515 {
6516 struct compound_hdr hdr;
6517 int status;
6518
6519 status = decode_compound_hdr(xdr, &hdr);
6520 if (status)
6521 goto out;
6522 status = decode_sequence(xdr, &res->seq_res, rqstp);
6523 if (status)
6524 goto out;
6525 status = decode_putfh(xdr);
6526 if (status)
6527 goto out;
6528 status = decode_commit(xdr, res);
6529 out:
6530 return status;
6531 }
6532
6533 /*
6534 * Decode FSINFO response
6535 */
6536 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6537 struct nfs4_fsinfo_res *res)
6538 {
6539 struct compound_hdr hdr;
6540 int status;
6541
6542 status = decode_compound_hdr(xdr, &hdr);
6543 if (!status)
6544 status = decode_sequence(xdr, &res->seq_res, req);
6545 if (!status)
6546 status = decode_putfh(xdr);
6547 if (!status)
6548 status = decode_fsinfo(xdr, res->fsinfo);
6549 return status;
6550 }
6551
6552 /*
6553 * Decode PATHCONF response
6554 */
6555 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6556 struct nfs4_pathconf_res *res)
6557 {
6558 struct compound_hdr hdr;
6559 int status;
6560
6561 status = decode_compound_hdr(xdr, &hdr);
6562 if (!status)
6563 status = decode_sequence(xdr, &res->seq_res, req);
6564 if (!status)
6565 status = decode_putfh(xdr);
6566 if (!status)
6567 status = decode_pathconf(xdr, res->pathconf);
6568 return status;
6569 }
6570
6571 /*
6572 * Decode STATFS response
6573 */
6574 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6575 struct nfs4_statfs_res *res)
6576 {
6577 struct compound_hdr hdr;
6578 int status;
6579
6580 status = decode_compound_hdr(xdr, &hdr);
6581 if (!status)
6582 status = decode_sequence(xdr, &res->seq_res, req);
6583 if (!status)
6584 status = decode_putfh(xdr);
6585 if (!status)
6586 status = decode_statfs(xdr, res->fsstat);
6587 return status;
6588 }
6589
6590 /*
6591 * Decode GETATTR_BITMAP response
6592 */
6593 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6594 struct xdr_stream *xdr,
6595 struct nfs4_server_caps_res *res)
6596 {
6597 struct compound_hdr hdr;
6598 int status;
6599
6600 status = decode_compound_hdr(xdr, &hdr);
6601 if (status)
6602 goto out;
6603 status = decode_sequence(xdr, &res->seq_res, req);
6604 if (status)
6605 goto out;
6606 status = decode_putfh(xdr);
6607 if (status)
6608 goto out;
6609 status = decode_server_caps(xdr, res);
6610 out:
6611 return status;
6612 }
6613
6614 /*
6615 * Decode RENEW response
6616 */
6617 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6618 void *__unused)
6619 {
6620 struct compound_hdr hdr;
6621 int status;
6622
6623 status = decode_compound_hdr(xdr, &hdr);
6624 if (!status)
6625 status = decode_renew(xdr);
6626 return status;
6627 }
6628
6629 /*
6630 * Decode SETCLIENTID response
6631 */
6632 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6633 struct xdr_stream *xdr,
6634 struct nfs4_setclientid_res *res)
6635 {
6636 struct compound_hdr hdr;
6637 int status;
6638
6639 status = decode_compound_hdr(xdr, &hdr);
6640 if (!status)
6641 status = decode_setclientid(xdr, res);
6642 return status;
6643 }
6644
6645 /*
6646 * Decode SETCLIENTID_CONFIRM response
6647 */
6648 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6649 struct xdr_stream *xdr,
6650 struct nfs_fsinfo *fsinfo)
6651 {
6652 struct compound_hdr hdr;
6653 int status;
6654
6655 status = decode_compound_hdr(xdr, &hdr);
6656 if (!status)
6657 status = decode_setclientid_confirm(xdr);
6658 if (!status)
6659 status = decode_putrootfh(xdr);
6660 if (!status)
6661 status = decode_fsinfo(xdr, fsinfo);
6662 return status;
6663 }
6664
6665 /*
6666 * Decode DELEGRETURN response
6667 */
6668 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6669 struct xdr_stream *xdr,
6670 struct nfs4_delegreturnres *res)
6671 {
6672 struct compound_hdr hdr;
6673 int status;
6674
6675 status = decode_compound_hdr(xdr, &hdr);
6676 if (status)
6677 goto out;
6678 status = decode_sequence(xdr, &res->seq_res, rqstp);
6679 if (status)
6680 goto out;
6681 status = decode_putfh(xdr);
6682 if (status != 0)
6683 goto out;
6684 status = decode_getfattr(xdr, res->fattr, res->server);
6685 if (status != 0)
6686 goto out;
6687 status = decode_delegreturn(xdr);
6688 out:
6689 return status;
6690 }
6691
6692 /*
6693 * Decode FS_LOCATIONS response
6694 */
6695 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6696 struct xdr_stream *xdr,
6697 struct nfs4_fs_locations_res *res)
6698 {
6699 struct compound_hdr hdr;
6700 int status;
6701
6702 status = decode_compound_hdr(xdr, &hdr);
6703 if (status)
6704 goto out;
6705 status = decode_sequence(xdr, &res->seq_res, req);
6706 if (status)
6707 goto out;
6708 status = decode_putfh(xdr);
6709 if (status)
6710 goto out;
6711 status = decode_lookup(xdr);
6712 if (status)
6713 goto out;
6714 xdr_enter_page(xdr, PAGE_SIZE);
6715 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6716 NULL, res->fs_locations,
6717 res->fs_locations->server);
6718 out:
6719 return status;
6720 }
6721
6722 /*
6723 * Decode SECINFO response
6724 */
6725 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6726 struct xdr_stream *xdr,
6727 struct nfs4_secinfo_res *res)
6728 {
6729 struct compound_hdr hdr;
6730 int status;
6731
6732 status = decode_compound_hdr(xdr, &hdr);
6733 if (status)
6734 goto out;
6735 status = decode_sequence(xdr, &res->seq_res, rqstp);
6736 if (status)
6737 goto out;
6738 status = decode_putfh(xdr);
6739 if (status)
6740 goto out;
6741 status = decode_secinfo(xdr, res);
6742 out:
6743 return status;
6744 }
6745
6746 #if defined(CONFIG_NFS_V4_1)
6747 /*
6748 * Decode BIND_CONN_TO_SESSION response
6749 */
6750 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6751 struct xdr_stream *xdr,
6752 void *res)
6753 {
6754 struct compound_hdr hdr;
6755 int status;
6756
6757 status = decode_compound_hdr(xdr, &hdr);
6758 if (!status)
6759 status = decode_bind_conn_to_session(xdr, res);
6760 return status;
6761 }
6762
6763 /*
6764 * Decode EXCHANGE_ID response
6765 */
6766 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6767 struct xdr_stream *xdr,
6768 void *res)
6769 {
6770 struct compound_hdr hdr;
6771 int status;
6772
6773 status = decode_compound_hdr(xdr, &hdr);
6774 if (!status)
6775 status = decode_exchange_id(xdr, res);
6776 return status;
6777 }
6778
6779 /*
6780 * Decode CREATE_SESSION response
6781 */
6782 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6783 struct xdr_stream *xdr,
6784 struct nfs41_create_session_res *res)
6785 {
6786 struct compound_hdr hdr;
6787 int status;
6788
6789 status = decode_compound_hdr(xdr, &hdr);
6790 if (!status)
6791 status = decode_create_session(xdr, res);
6792 return status;
6793 }
6794
6795 /*
6796 * Decode DESTROY_SESSION response
6797 */
6798 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6799 struct xdr_stream *xdr,
6800 void *res)
6801 {
6802 struct compound_hdr hdr;
6803 int status;
6804
6805 status = decode_compound_hdr(xdr, &hdr);
6806 if (!status)
6807 status = decode_destroy_session(xdr, res);
6808 return status;
6809 }
6810
6811 /*
6812 * Decode DESTROY_CLIENTID response
6813 */
6814 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6815 struct xdr_stream *xdr,
6816 void *res)
6817 {
6818 struct compound_hdr hdr;
6819 int status;
6820
6821 status = decode_compound_hdr(xdr, &hdr);
6822 if (!status)
6823 status = decode_destroy_clientid(xdr, res);
6824 return status;
6825 }
6826
6827 /*
6828 * Decode SEQUENCE response
6829 */
6830 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6831 struct xdr_stream *xdr,
6832 struct nfs4_sequence_res *res)
6833 {
6834 struct compound_hdr hdr;
6835 int status;
6836
6837 status = decode_compound_hdr(xdr, &hdr);
6838 if (!status)
6839 status = decode_sequence(xdr, res, rqstp);
6840 return status;
6841 }
6842
6843 /*
6844 * Decode GET_LEASE_TIME response
6845 */
6846 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6847 struct xdr_stream *xdr,
6848 struct nfs4_get_lease_time_res *res)
6849 {
6850 struct compound_hdr hdr;
6851 int status;
6852
6853 status = decode_compound_hdr(xdr, &hdr);
6854 if (!status)
6855 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6856 if (!status)
6857 status = decode_putrootfh(xdr);
6858 if (!status)
6859 status = decode_fsinfo(xdr, res->lr_fsinfo);
6860 return status;
6861 }
6862
6863 /*
6864 * Decode RECLAIM_COMPLETE response
6865 */
6866 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6867 struct xdr_stream *xdr,
6868 struct nfs41_reclaim_complete_res *res)
6869 {
6870 struct compound_hdr hdr;
6871 int status;
6872
6873 status = decode_compound_hdr(xdr, &hdr);
6874 if (!status)
6875 status = decode_sequence(xdr, &res->seq_res, rqstp);
6876 if (!status)
6877 status = decode_reclaim_complete(xdr, (void *)NULL);
6878 return status;
6879 }
6880
6881 /*
6882 * Decode GETDEVICELIST response
6883 */
6884 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6885 struct xdr_stream *xdr,
6886 struct nfs4_getdevicelist_res *res)
6887 {
6888 struct compound_hdr hdr;
6889 int status;
6890
6891 dprintk("encoding getdevicelist!\n");
6892
6893 status = decode_compound_hdr(xdr, &hdr);
6894 if (status != 0)
6895 goto out;
6896 status = decode_sequence(xdr, &res->seq_res, rqstp);
6897 if (status != 0)
6898 goto out;
6899 status = decode_putfh(xdr);
6900 if (status != 0)
6901 goto out;
6902 status = decode_getdevicelist(xdr, res->devlist);
6903 out:
6904 return status;
6905 }
6906
6907 /*
6908 * Decode GETDEVINFO response
6909 */
6910 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6911 struct xdr_stream *xdr,
6912 struct nfs4_getdeviceinfo_res *res)
6913 {
6914 struct compound_hdr hdr;
6915 int status;
6916
6917 status = decode_compound_hdr(xdr, &hdr);
6918 if (status != 0)
6919 goto out;
6920 status = decode_sequence(xdr, &res->seq_res, rqstp);
6921 if (status != 0)
6922 goto out;
6923 status = decode_getdeviceinfo(xdr, res->pdev);
6924 out:
6925 return status;
6926 }
6927
6928 /*
6929 * Decode LAYOUTGET response
6930 */
6931 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6932 struct xdr_stream *xdr,
6933 struct nfs4_layoutget_res *res)
6934 {
6935 struct compound_hdr hdr;
6936 int status;
6937
6938 status = decode_compound_hdr(xdr, &hdr);
6939 if (status)
6940 goto out;
6941 status = decode_sequence(xdr, &res->seq_res, rqstp);
6942 if (status)
6943 goto out;
6944 status = decode_putfh(xdr);
6945 if (status)
6946 goto out;
6947 status = decode_layoutget(xdr, rqstp, res);
6948 out:
6949 return status;
6950 }
6951
6952 /*
6953 * Decode LAYOUTRETURN response
6954 */
6955 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6956 struct xdr_stream *xdr,
6957 struct nfs4_layoutreturn_res *res)
6958 {
6959 struct compound_hdr hdr;
6960 int status;
6961
6962 status = decode_compound_hdr(xdr, &hdr);
6963 if (status)
6964 goto out;
6965 status = decode_sequence(xdr, &res->seq_res, rqstp);
6966 if (status)
6967 goto out;
6968 status = decode_putfh(xdr);
6969 if (status)
6970 goto out;
6971 status = decode_layoutreturn(xdr, res);
6972 out:
6973 return status;
6974 }
6975
6976 /*
6977 * Decode LAYOUTCOMMIT response
6978 */
6979 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6980 struct xdr_stream *xdr,
6981 struct nfs4_layoutcommit_res *res)
6982 {
6983 struct compound_hdr hdr;
6984 int status;
6985
6986 status = decode_compound_hdr(xdr, &hdr);
6987 if (status)
6988 goto out;
6989 status = decode_sequence(xdr, &res->seq_res, rqstp);
6990 if (status)
6991 goto out;
6992 status = decode_putfh(xdr);
6993 if (status)
6994 goto out;
6995 status = decode_layoutcommit(xdr, rqstp, res);
6996 if (status)
6997 goto out;
6998 decode_getfattr(xdr, res->fattr, res->server);
6999 out:
7000 return status;
7001 }
7002
7003 /*
7004 * Decode SECINFO_NO_NAME response
7005 */
7006 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7007 struct xdr_stream *xdr,
7008 struct nfs4_secinfo_res *res)
7009 {
7010 struct compound_hdr hdr;
7011 int status;
7012
7013 status = decode_compound_hdr(xdr, &hdr);
7014 if (status)
7015 goto out;
7016 status = decode_sequence(xdr, &res->seq_res, rqstp);
7017 if (status)
7018 goto out;
7019 status = decode_putrootfh(xdr);
7020 if (status)
7021 goto out;
7022 status = decode_secinfo_no_name(xdr, res);
7023 out:
7024 return status;
7025 }
7026
7027 /*
7028 * Decode TEST_STATEID response
7029 */
7030 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7031 struct xdr_stream *xdr,
7032 struct nfs41_test_stateid_res *res)
7033 {
7034 struct compound_hdr hdr;
7035 int status;
7036
7037 status = decode_compound_hdr(xdr, &hdr);
7038 if (status)
7039 goto out;
7040 status = decode_sequence(xdr, &res->seq_res, rqstp);
7041 if (status)
7042 goto out;
7043 status = decode_test_stateid(xdr, res);
7044 out:
7045 return status;
7046 }
7047
7048 /*
7049 * Decode FREE_STATEID response
7050 */
7051 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7052 struct xdr_stream *xdr,
7053 struct nfs41_free_stateid_res *res)
7054 {
7055 struct compound_hdr hdr;
7056 int status;
7057
7058 status = decode_compound_hdr(xdr, &hdr);
7059 if (status)
7060 goto out;
7061 status = decode_sequence(xdr, &res->seq_res, rqstp);
7062 if (status)
7063 goto out;
7064 status = decode_free_stateid(xdr, res);
7065 out:
7066 return status;
7067 }
7068 #endif /* CONFIG_NFS_V4_1 */
7069
7070 /**
7071 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7072 * the local page cache.
7073 * @xdr: XDR stream where entry resides
7074 * @entry: buffer to fill in with entry data
7075 * @plus: boolean indicating whether this should be a readdirplus entry
7076 *
7077 * Returns zero if successful, otherwise a negative errno value is
7078 * returned.
7079 *
7080 * This function is not invoked during READDIR reply decoding, but
7081 * rather whenever an application invokes the getdents(2) system call
7082 * on a directory already in our cache.
7083 */
7084 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7085 int plus)
7086 {
7087 unsigned int savep;
7088 uint32_t bitmap[3] = {0};
7089 uint32_t len;
7090 __be32 *p = xdr_inline_decode(xdr, 4);
7091 if (unlikely(!p))
7092 goto out_overflow;
7093 if (*p == xdr_zero) {
7094 p = xdr_inline_decode(xdr, 4);
7095 if (unlikely(!p))
7096 goto out_overflow;
7097 if (*p == xdr_zero)
7098 return -EAGAIN;
7099 entry->eof = 1;
7100 return -EBADCOOKIE;
7101 }
7102
7103 p = xdr_inline_decode(xdr, 12);
7104 if (unlikely(!p))
7105 goto out_overflow;
7106 entry->prev_cookie = entry->cookie;
7107 p = xdr_decode_hyper(p, &entry->cookie);
7108 entry->len = be32_to_cpup(p);
7109
7110 p = xdr_inline_decode(xdr, entry->len);
7111 if (unlikely(!p))
7112 goto out_overflow;
7113 entry->name = (const char *) p;
7114
7115 /*
7116 * In case the server doesn't return an inode number,
7117 * we fake one here. (We don't use inode number 0,
7118 * since glibc seems to choke on it...)
7119 */
7120 entry->ino = 1;
7121 entry->fattr->valid = 0;
7122
7123 if (decode_attr_bitmap(xdr, bitmap) < 0)
7124 goto out_overflow;
7125
7126 if (decode_attr_length(xdr, &len, &savep) < 0)
7127 goto out_overflow;
7128
7129 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7130 NULL, entry->server) < 0)
7131 goto out_overflow;
7132 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7133 entry->ino = entry->fattr->mounted_on_fileid;
7134 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7135 entry->ino = entry->fattr->fileid;
7136
7137 entry->d_type = DT_UNKNOWN;
7138 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7139 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7140
7141 return 0;
7142
7143 out_overflow:
7144 print_overflow_msg(__func__, xdr);
7145 return -EAGAIN;
7146 }
7147
7148 /*
7149 * We need to translate between nfs status return values and
7150 * the local errno values which may not be the same.
7151 */
7152 static struct {
7153 int stat;
7154 int errno;
7155 } nfs_errtbl[] = {
7156 { NFS4_OK, 0 },
7157 { NFS4ERR_PERM, -EPERM },
7158 { NFS4ERR_NOENT, -ENOENT },
7159 { NFS4ERR_IO, -errno_NFSERR_IO},
7160 { NFS4ERR_NXIO, -ENXIO },
7161 { NFS4ERR_ACCESS, -EACCES },
7162 { NFS4ERR_EXIST, -EEXIST },
7163 { NFS4ERR_XDEV, -EXDEV },
7164 { NFS4ERR_NOTDIR, -ENOTDIR },
7165 { NFS4ERR_ISDIR, -EISDIR },
7166 { NFS4ERR_INVAL, -EINVAL },
7167 { NFS4ERR_FBIG, -EFBIG },
7168 { NFS4ERR_NOSPC, -ENOSPC },
7169 { NFS4ERR_ROFS, -EROFS },
7170 { NFS4ERR_MLINK, -EMLINK },
7171 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7172 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7173 { NFS4ERR_DQUOT, -EDQUOT },
7174 { NFS4ERR_STALE, -ESTALE },
7175 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7176 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7177 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7178 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7179 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7180 { NFS4ERR_BADTYPE, -EBADTYPE },
7181 { NFS4ERR_LOCKED, -EAGAIN },
7182 { NFS4ERR_SYMLINK, -ELOOP },
7183 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7184 { NFS4ERR_DEADLOCK, -EDEADLK },
7185 { -1, -EIO }
7186 };
7187
7188 /*
7189 * Convert an NFS error code to a local one.
7190 * This one is used jointly by NFSv2 and NFSv3.
7191 */
7192 static int
7193 nfs4_stat_to_errno(int stat)
7194 {
7195 int i;
7196 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7197 if (nfs_errtbl[i].stat == stat)
7198 return nfs_errtbl[i].errno;
7199 }
7200 if (stat <= 10000 || stat > 10100) {
7201 /* The server is looney tunes. */
7202 return -EREMOTEIO;
7203 }
7204 /* If we cannot translate the error, the recovery routines should
7205 * handle it.
7206 * Note: remaining NFSv4 error codes have values > 10000, so should
7207 * not conflict with native Linux error codes.
7208 */
7209 return -stat;
7210 }
7211
7212 #define PROC(proc, argtype, restype) \
7213 [NFSPROC4_CLNT_##proc] = { \
7214 .p_proc = NFSPROC4_COMPOUND, \
7215 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7216 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7217 .p_arglen = NFS4_##argtype##_sz, \
7218 .p_replen = NFS4_##restype##_sz, \
7219 .p_statidx = NFSPROC4_CLNT_##proc, \
7220 .p_name = #proc, \
7221 }
7222
7223 struct rpc_procinfo nfs4_procedures[] = {
7224 PROC(READ, enc_read, dec_read),
7225 PROC(WRITE, enc_write, dec_write),
7226 PROC(COMMIT, enc_commit, dec_commit),
7227 PROC(OPEN, enc_open, dec_open),
7228 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7229 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7230 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7231 PROC(CLOSE, enc_close, dec_close),
7232 PROC(SETATTR, enc_setattr, dec_setattr),
7233 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7234 PROC(RENEW, enc_renew, dec_renew),
7235 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7236 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7237 PROC(LOCK, enc_lock, dec_lock),
7238 PROC(LOCKT, enc_lockt, dec_lockt),
7239 PROC(LOCKU, enc_locku, dec_locku),
7240 PROC(ACCESS, enc_access, dec_access),
7241 PROC(GETATTR, enc_getattr, dec_getattr),
7242 PROC(LOOKUP, enc_lookup, dec_lookup),
7243 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7244 PROC(REMOVE, enc_remove, dec_remove),
7245 PROC(RENAME, enc_rename, dec_rename),
7246 PROC(LINK, enc_link, dec_link),
7247 PROC(SYMLINK, enc_symlink, dec_symlink),
7248 PROC(CREATE, enc_create, dec_create),
7249 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7250 PROC(STATFS, enc_statfs, dec_statfs),
7251 PROC(READLINK, enc_readlink, dec_readlink),
7252 PROC(READDIR, enc_readdir, dec_readdir),
7253 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7254 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7255 PROC(GETACL, enc_getacl, dec_getacl),
7256 PROC(SETACL, enc_setacl, dec_setacl),
7257 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7258 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7259 PROC(SECINFO, enc_secinfo, dec_secinfo),
7260 #if defined(CONFIG_NFS_V4_1)
7261 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7262 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7263 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7264 PROC(SEQUENCE, enc_sequence, dec_sequence),
7265 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7266 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7267 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7268 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7269 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7270 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7271 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7272 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7273 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7274 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7275 PROC(BIND_CONN_TO_SESSION,
7276 enc_bind_conn_to_session, dec_bind_conn_to_session),
7277 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7278 #endif /* CONFIG_NFS_V4_1 */
7279 };
7280
7281 const struct rpc_version nfs_version4 = {
7282 .number = 4,
7283 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7284 .procs = nfs4_procedures
7285 };
7286
7287 /*
7288 * Local variables:
7289 * c-basic-offset: 8
7290 * End:
7291 */
kernel source for telekom puls (alcatel/mediatek)