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wl18xx: implement fw status debugfs entries
[linux-2.6/libata-dev.git] / fs / nfs / nfs4xdr.c
blobee4a74db95d0b1b7ea49e8dd1263f0504f2fffa8
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_getfh_maxsz + \
451 encode_getattr_maxsz)
452 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
453 decode_sequence_maxsz + \
454 decode_putfh_maxsz + \
455 decode_open_maxsz + \
456 decode_getfh_maxsz + \
457 decode_getattr_maxsz)
458 #define NFS4_enc_open_confirm_sz \
459 (compound_encode_hdr_maxsz + \
460 encode_putfh_maxsz + \
461 encode_open_confirm_maxsz)
462 #define NFS4_dec_open_confirm_sz \
463 (compound_decode_hdr_maxsz + \
464 decode_putfh_maxsz + \
465 decode_open_confirm_maxsz)
466 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
467 encode_sequence_maxsz + \
468 encode_putfh_maxsz + \
469 encode_open_maxsz + \
470 encode_getattr_maxsz)
471 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
472 decode_sequence_maxsz + \
473 decode_putfh_maxsz + \
474 decode_open_maxsz + \
475 decode_getattr_maxsz)
476 #define NFS4_enc_open_downgrade_sz \
477 (compound_encode_hdr_maxsz + \
478 encode_sequence_maxsz + \
479 encode_putfh_maxsz + \
480 encode_open_downgrade_maxsz + \
481 encode_getattr_maxsz)
482 #define NFS4_dec_open_downgrade_sz \
483 (compound_decode_hdr_maxsz + \
484 decode_sequence_maxsz + \
485 decode_putfh_maxsz + \
486 decode_open_downgrade_maxsz + \
487 decode_getattr_maxsz)
488 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
489 encode_sequence_maxsz + \
490 encode_putfh_maxsz + \
491 encode_close_maxsz + \
492 encode_getattr_maxsz)
493 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
494 decode_sequence_maxsz + \
495 decode_putfh_maxsz + \
496 decode_close_maxsz + \
497 decode_getattr_maxsz)
498 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
499 encode_sequence_maxsz + \
500 encode_putfh_maxsz + \
501 encode_setattr_maxsz + \
502 encode_getattr_maxsz)
503 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_setattr_maxsz + \
507 decode_getattr_maxsz)
508 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
509 encode_sequence_maxsz + \
510 encode_putfh_maxsz + \
511 encode_fsinfo_maxsz)
512 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
513 decode_sequence_maxsz + \
514 decode_putfh_maxsz + \
515 decode_fsinfo_maxsz)
516 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
517 encode_renew_maxsz)
518 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
519 decode_renew_maxsz)
520 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
521 encode_setclientid_maxsz)
522 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
523 decode_setclientid_maxsz)
524 #define NFS4_enc_setclientid_confirm_sz \
525 (compound_encode_hdr_maxsz + \
526 encode_setclientid_confirm_maxsz + \
527 encode_putrootfh_maxsz + \
528 encode_fsinfo_maxsz)
529 #define NFS4_dec_setclientid_confirm_sz \
530 (compound_decode_hdr_maxsz + \
531 decode_setclientid_confirm_maxsz + \
532 decode_putrootfh_maxsz + \
533 decode_fsinfo_maxsz)
534 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
535 encode_sequence_maxsz + \
536 encode_putfh_maxsz + \
537 encode_lock_maxsz)
538 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
539 decode_sequence_maxsz + \
540 decode_putfh_maxsz + \
541 decode_lock_maxsz)
542 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
543 encode_sequence_maxsz + \
544 encode_putfh_maxsz + \
545 encode_lockt_maxsz)
546 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
547 decode_sequence_maxsz + \
548 decode_putfh_maxsz + \
549 decode_lockt_maxsz)
550 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
551 encode_sequence_maxsz + \
552 encode_putfh_maxsz + \
553 encode_locku_maxsz)
554 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
555 decode_sequence_maxsz + \
556 decode_putfh_maxsz + \
557 decode_locku_maxsz)
558 #define NFS4_enc_release_lockowner_sz \
559 (compound_encode_hdr_maxsz + \
560 encode_lockowner_maxsz)
561 #define NFS4_dec_release_lockowner_sz \
562 (compound_decode_hdr_maxsz + \
563 decode_lockowner_maxsz)
564 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
565 encode_sequence_maxsz + \
566 encode_putfh_maxsz + \
567 encode_access_maxsz + \
568 encode_getattr_maxsz)
569 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
570 decode_sequence_maxsz + \
571 decode_putfh_maxsz + \
572 decode_access_maxsz + \
573 decode_getattr_maxsz)
574 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
575 encode_sequence_maxsz + \
576 encode_putfh_maxsz + \
577 encode_getattr_maxsz)
578 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
579 decode_sequence_maxsz + \
580 decode_putfh_maxsz + \
581 decode_getattr_maxsz)
582 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
583 encode_sequence_maxsz + \
584 encode_putfh_maxsz + \
585 encode_lookup_maxsz + \
586 encode_getattr_maxsz + \
587 encode_getfh_maxsz)
588 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
589 decode_sequence_maxsz + \
590 decode_putfh_maxsz + \
591 decode_lookup_maxsz + \
592 decode_getattr_maxsz + \
593 decode_getfh_maxsz)
594 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
595 encode_sequence_maxsz + \
596 encode_putrootfh_maxsz + \
597 encode_getattr_maxsz + \
598 encode_getfh_maxsz)
599 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
600 decode_sequence_maxsz + \
601 decode_putrootfh_maxsz + \
602 decode_getattr_maxsz + \
603 decode_getfh_maxsz)
604 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
605 encode_sequence_maxsz + \
606 encode_putfh_maxsz + \
607 encode_remove_maxsz)
608 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_remove_maxsz)
612 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
615 encode_savefh_maxsz + \
616 encode_putfh_maxsz + \
617 encode_rename_maxsz)
618 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
619 decode_sequence_maxsz + \
620 decode_putfh_maxsz + \
621 decode_savefh_maxsz + \
622 decode_putfh_maxsz + \
623 decode_rename_maxsz)
624 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
625 encode_sequence_maxsz + \
626 encode_putfh_maxsz + \
627 encode_savefh_maxsz + \
628 encode_putfh_maxsz + \
629 encode_link_maxsz + \
630 encode_restorefh_maxsz + \
631 encode_getattr_maxsz)
632 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
633 decode_sequence_maxsz + \
634 decode_putfh_maxsz + \
635 decode_savefh_maxsz + \
636 decode_putfh_maxsz + \
637 decode_link_maxsz + \
638 decode_restorefh_maxsz + \
639 decode_getattr_maxsz)
640 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
641 encode_sequence_maxsz + \
642 encode_putfh_maxsz + \
643 encode_symlink_maxsz + \
644 encode_getattr_maxsz + \
645 encode_getfh_maxsz)
646 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
647 decode_sequence_maxsz + \
648 decode_putfh_maxsz + \
649 decode_symlink_maxsz + \
650 decode_getattr_maxsz + \
651 decode_getfh_maxsz)
652 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
653 encode_sequence_maxsz + \
654 encode_putfh_maxsz + \
655 encode_create_maxsz + \
656 encode_getfh_maxsz + \
657 encode_getattr_maxsz)
658 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
659 decode_sequence_maxsz + \
660 decode_putfh_maxsz + \
661 decode_create_maxsz + \
662 decode_getfh_maxsz + \
663 decode_getattr_maxsz)
664 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
665 encode_sequence_maxsz + \
666 encode_putfh_maxsz + \
667 encode_getattr_maxsz)
668 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
669 decode_sequence_maxsz + \
670 decode_putfh_maxsz + \
671 decode_getattr_maxsz)
672 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
673 encode_sequence_maxsz + \
674 encode_putfh_maxsz + \
675 encode_statfs_maxsz)
676 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
677 decode_sequence_maxsz + \
678 decode_putfh_maxsz + \
679 decode_statfs_maxsz)
680 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
681 encode_sequence_maxsz + \
682 encode_putfh_maxsz + \
683 encode_getattr_maxsz)
684 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
685 decode_sequence_maxsz + \
686 decode_putfh_maxsz + \
687 decode_getattr_maxsz)
688 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
689 encode_sequence_maxsz + \
690 encode_putfh_maxsz + \
691 encode_delegreturn_maxsz + \
692 encode_getattr_maxsz)
693 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_delegreturn_maxsz + \
696 decode_getattr_maxsz)
697 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
698 encode_sequence_maxsz + \
699 encode_putfh_maxsz + \
700 encode_getacl_maxsz)
701 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_getacl_maxsz)
705 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
706 encode_sequence_maxsz + \
707 encode_putfh_maxsz + \
708 encode_setacl_maxsz)
709 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
710 decode_sequence_maxsz + \
711 decode_putfh_maxsz + \
712 decode_setacl_maxsz)
713 #define NFS4_enc_fs_locations_sz \
714 (compound_encode_hdr_maxsz + \
715 encode_sequence_maxsz + \
716 encode_putfh_maxsz + \
717 encode_lookup_maxsz + \
718 encode_fs_locations_maxsz)
719 #define NFS4_dec_fs_locations_sz \
720 (compound_decode_hdr_maxsz + \
721 decode_sequence_maxsz + \
722 decode_putfh_maxsz + \
723 decode_lookup_maxsz + \
724 decode_fs_locations_maxsz)
725 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
726 encode_sequence_maxsz + \
727 encode_putfh_maxsz + \
728 encode_secinfo_maxsz)
729 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
730 decode_sequence_maxsz + \
731 decode_putfh_maxsz + \
732 decode_secinfo_maxsz)
733 #if defined(CONFIG_NFS_V4_1)
734 #define NFS4_enc_bind_conn_to_session_sz \
735 (compound_encode_hdr_maxsz + \
736 encode_bind_conn_to_session_maxsz)
737 #define NFS4_dec_bind_conn_to_session_sz \
738 (compound_decode_hdr_maxsz + \
739 decode_bind_conn_to_session_maxsz)
740 #define NFS4_enc_exchange_id_sz \
741 (compound_encode_hdr_maxsz + \
742 encode_exchange_id_maxsz)
743 #define NFS4_dec_exchange_id_sz \
744 (compound_decode_hdr_maxsz + \
745 decode_exchange_id_maxsz)
746 #define NFS4_enc_create_session_sz \
747 (compound_encode_hdr_maxsz + \
748 encode_create_session_maxsz)
749 #define NFS4_dec_create_session_sz \
750 (compound_decode_hdr_maxsz + \
751 decode_create_session_maxsz)
752 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
753 encode_destroy_session_maxsz)
754 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
755 decode_destroy_session_maxsz)
756 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
757 encode_destroy_clientid_maxsz)
758 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
759 decode_destroy_clientid_maxsz)
760 #define NFS4_enc_sequence_sz \
761 (compound_decode_hdr_maxsz + \
762 encode_sequence_maxsz)
763 #define NFS4_dec_sequence_sz \
764 (compound_decode_hdr_maxsz + \
765 decode_sequence_maxsz)
766 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
767 encode_sequence_maxsz + \
768 encode_putrootfh_maxsz + \
769 encode_fsinfo_maxsz)
770 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
771 decode_sequence_maxsz + \
772 decode_putrootfh_maxsz + \
773 decode_fsinfo_maxsz)
774 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
775 encode_sequence_maxsz + \
776 encode_reclaim_complete_maxsz)
777 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_reclaim_complete_maxsz)
780 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
781 encode_sequence_maxsz + \
782 encode_putfh_maxsz + \
783 encode_getdevicelist_maxsz)
784 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
785 decode_sequence_maxsz + \
786 decode_putfh_maxsz + \
787 decode_getdevicelist_maxsz)
788 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
789 encode_sequence_maxsz +\
790 encode_getdeviceinfo_maxsz)
791 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
792 decode_sequence_maxsz + \
793 decode_getdeviceinfo_maxsz)
794 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
795 encode_sequence_maxsz + \
796 encode_putfh_maxsz + \
797 encode_layoutget_maxsz)
798 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
799 decode_sequence_maxsz + \
800 decode_putfh_maxsz + \
801 decode_layoutget_maxsz)
802 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
803 encode_sequence_maxsz +\
804 encode_putfh_maxsz + \
805 encode_layoutcommit_maxsz + \
806 encode_getattr_maxsz)
807 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
808 decode_sequence_maxsz + \
809 decode_putfh_maxsz + \
810 decode_layoutcommit_maxsz + \
811 decode_getattr_maxsz)
812 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
813 encode_sequence_maxsz + \
814 encode_putfh_maxsz + \
815 encode_layoutreturn_maxsz)
816 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
817 decode_sequence_maxsz + \
818 decode_putfh_maxsz + \
819 decode_layoutreturn_maxsz)
820 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz + \
822 encode_putrootfh_maxsz +\
823 encode_secinfo_no_name_maxsz)
824 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putrootfh_maxsz + \
827 decode_secinfo_no_name_maxsz)
828 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
829 encode_sequence_maxsz + \
830 encode_test_stateid_maxsz)
831 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
832 decode_sequence_maxsz + \
833 decode_test_stateid_maxsz)
834 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
835 encode_sequence_maxsz + \
836 encode_free_stateid_maxsz)
837 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
838 decode_sequence_maxsz + \
839 decode_free_stateid_maxsz)
840
841 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
842 compound_encode_hdr_maxsz +
843 encode_sequence_maxsz +
844 encode_putfh_maxsz +
845 encode_getattr_maxsz) *
846 XDR_UNIT);
847
848 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
849 compound_decode_hdr_maxsz +
850 decode_sequence_maxsz +
851 decode_putfh_maxsz) *
852 XDR_UNIT);
853 #endif /* CONFIG_NFS_V4_1 */
854
855 static unsigned short send_implementation_id = 1;
856
857 module_param(send_implementation_id, ushort, 0644);
858 MODULE_PARM_DESC(send_implementation_id,
859 "Send implementation ID with NFSv4.1 exchange_id");
860
861 static const umode_t nfs_type2fmt[] = {
862 [NF4BAD] = 0,
863 [NF4REG] = S_IFREG,
864 [NF4DIR] = S_IFDIR,
865 [NF4BLK] = S_IFBLK,
866 [NF4CHR] = S_IFCHR,
867 [NF4LNK] = S_IFLNK,
868 [NF4SOCK] = S_IFSOCK,
869 [NF4FIFO] = S_IFIFO,
870 [NF4ATTRDIR] = 0,
871 [NF4NAMEDATTR] = 0,
872 };
873
874 struct compound_hdr {
875 int32_t status;
876 uint32_t nops;
877 __be32 * nops_p;
878 uint32_t taglen;
879 char * tag;
880 uint32_t replen; /* expected reply words */
881 u32 minorversion;
882 };
883
884 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
885 {
886 __be32 *p = xdr_reserve_space(xdr, nbytes);
887 BUG_ON(!p);
888 return p;
889 }
890
891 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
892 {
893 __be32 *p;
894
895 p = xdr_reserve_space(xdr, len);
896 xdr_encode_opaque_fixed(p, buf, len);
897 }
898
899 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
900 {
901 __be32 *p;
902
903 p = reserve_space(xdr, 4 + len);
904 xdr_encode_opaque(p, str, len);
905 }
906
907 static void encode_uint32(struct xdr_stream *xdr, u32 n)
908 {
909 __be32 *p;
910
911 p = reserve_space(xdr, 4);
912 *p = cpu_to_be32(n);
913 }
914
915 static void encode_uint64(struct xdr_stream *xdr, u64 n)
916 {
917 __be32 *p;
918
919 p = reserve_space(xdr, 8);
920 xdr_encode_hyper(p, n);
921 }
922
923 static void encode_nfs4_seqid(struct xdr_stream *xdr,
924 const struct nfs_seqid *seqid)
925 {
926 encode_uint32(xdr, seqid->sequence->counter);
927 }
928
929 static void encode_compound_hdr(struct xdr_stream *xdr,
930 struct rpc_rqst *req,
931 struct compound_hdr *hdr)
932 {
933 __be32 *p;
934 struct rpc_auth *auth = req->rq_cred->cr_auth;
935
936 /* initialize running count of expected bytes in reply.
937 * NOTE: the replied tag SHOULD be the same is the one sent,
938 * but this is not required as a MUST for the server to do so. */
939 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
940
941 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
942 encode_string(xdr, hdr->taglen, hdr->tag);
943 p = reserve_space(xdr, 8);
944 *p++ = cpu_to_be32(hdr->minorversion);
945 hdr->nops_p = p;
946 *p = cpu_to_be32(hdr->nops);
947 }
948
949 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
950 uint32_t replen,
951 struct compound_hdr *hdr)
952 {
953 encode_uint32(xdr, op);
954 hdr->nops++;
955 hdr->replen += replen;
956 }
957
958 static void encode_nops(struct compound_hdr *hdr)
959 {
960 BUG_ON(hdr->nops > NFS4_MAX_OPS);
961 *hdr->nops_p = htonl(hdr->nops);
962 }
963
964 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
965 {
966 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
967 }
968
969 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
970 {
971 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
972 }
973
974 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
975 {
976 char owner_name[IDMAP_NAMESZ];
977 char owner_group[IDMAP_NAMESZ];
978 int owner_namelen = 0;
979 int owner_grouplen = 0;
980 __be32 *p;
981 __be32 *q;
982 int len;
983 uint32_t bmval0 = 0;
984 uint32_t bmval1 = 0;
985
986 /*
987 * We reserve enough space to write the entire attribute buffer at once.
988 * In the worst-case, this would be
989 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
990 * = 36 bytes, plus any contribution from variable-length fields
991 * such as owner/group.
992 */
993 len = 16;
994
995 /* Sigh */
996 if (iap->ia_valid & ATTR_SIZE)
997 len += 8;
998 if (iap->ia_valid & ATTR_MODE)
999 len += 4;
1000 if (iap->ia_valid & ATTR_UID) {
1001 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1002 if (owner_namelen < 0) {
1003 dprintk("nfs: couldn't resolve uid %d to string\n",
1004 iap->ia_uid);
1005 /* XXX */
1006 strcpy(owner_name, "nobody");
1007 owner_namelen = sizeof("nobody") - 1;
1008 /* goto out; */
1009 }
1010 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1011 }
1012 if (iap->ia_valid & ATTR_GID) {
1013 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1014 if (owner_grouplen < 0) {
1015 dprintk("nfs: couldn't resolve gid %d to string\n",
1016 iap->ia_gid);
1017 strcpy(owner_group, "nobody");
1018 owner_grouplen = sizeof("nobody") - 1;
1019 /* goto out; */
1020 }
1021 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1022 }
1023 if (iap->ia_valid & ATTR_ATIME_SET)
1024 len += 16;
1025 else if (iap->ia_valid & ATTR_ATIME)
1026 len += 4;
1027 if (iap->ia_valid & ATTR_MTIME_SET)
1028 len += 16;
1029 else if (iap->ia_valid & ATTR_MTIME)
1030 len += 4;
1031 p = reserve_space(xdr, len);
1032
1033 /*
1034 * We write the bitmap length now, but leave the bitmap and the attribute
1035 * buffer length to be backfilled at the end of this routine.
1036 */
1037 *p++ = cpu_to_be32(2);
1038 q = p;
1039 p += 3;
1040
1041 if (iap->ia_valid & ATTR_SIZE) {
1042 bmval0 |= FATTR4_WORD0_SIZE;
1043 p = xdr_encode_hyper(p, iap->ia_size);
1044 }
1045 if (iap->ia_valid & ATTR_MODE) {
1046 bmval1 |= FATTR4_WORD1_MODE;
1047 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1048 }
1049 if (iap->ia_valid & ATTR_UID) {
1050 bmval1 |= FATTR4_WORD1_OWNER;
1051 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1052 }
1053 if (iap->ia_valid & ATTR_GID) {
1054 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1055 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1056 }
1057 if (iap->ia_valid & ATTR_ATIME_SET) {
1058 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1059 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1060 *p++ = cpu_to_be32(0);
1061 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1062 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1063 }
1064 else if (iap->ia_valid & ATTR_ATIME) {
1065 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1066 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1067 }
1068 if (iap->ia_valid & ATTR_MTIME_SET) {
1069 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1070 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1071 *p++ = cpu_to_be32(0);
1072 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1073 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1074 }
1075 else if (iap->ia_valid & ATTR_MTIME) {
1076 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1077 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1078 }
1079
1080 /*
1081 * Now we backfill the bitmap and the attribute buffer length.
1082 */
1083 if (len != ((char *)p - (char *)q) + 4) {
1084 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1085 len, ((char *)p - (char *)q) + 4);
1086 BUG();
1087 }
1088 len = (char *)p - (char *)q - 12;
1089 *q++ = htonl(bmval0);
1090 *q++ = htonl(bmval1);
1091 *q = htonl(len);
1092
1093 /* out: */
1094 }
1095
1096 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1097 {
1098 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1099 encode_uint32(xdr, access);
1100 }
1101
1102 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1103 {
1104 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1105 encode_nfs4_seqid(xdr, arg->seqid);
1106 encode_nfs4_stateid(xdr, arg->stateid);
1107 }
1108
1109 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1110 {
1111 __be32 *p;
1112
1113 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1114 p = reserve_space(xdr, 12);
1115 p = xdr_encode_hyper(p, args->offset);
1116 *p = cpu_to_be32(args->count);
1117 }
1118
1119 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1120 {
1121 __be32 *p;
1122
1123 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1124 encode_uint32(xdr, create->ftype);
1125
1126 switch (create->ftype) {
1127 case NF4LNK:
1128 p = reserve_space(xdr, 4);
1129 *p = cpu_to_be32(create->u.symlink.len);
1130 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1131 break;
1132
1133 case NF4BLK: case NF4CHR:
1134 p = reserve_space(xdr, 8);
1135 *p++ = cpu_to_be32(create->u.device.specdata1);
1136 *p = cpu_to_be32(create->u.device.specdata2);
1137 break;
1138
1139 default:
1140 break;
1141 }
1142
1143 encode_string(xdr, create->name->len, create->name->name);
1144 encode_attrs(xdr, create->attrs, create->server);
1145 }
1146
1147 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1148 {
1149 __be32 *p;
1150
1151 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1152 p = reserve_space(xdr, 8);
1153 *p++ = cpu_to_be32(1);
1154 *p = cpu_to_be32(bitmap);
1155 }
1156
1157 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1158 {
1159 __be32 *p;
1160
1161 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1162 p = reserve_space(xdr, 12);
1163 *p++ = cpu_to_be32(2);
1164 *p++ = cpu_to_be32(bm0);
1165 *p = cpu_to_be32(bm1);
1166 }
1167
1168 static void
1169 encode_getattr_three(struct xdr_stream *xdr,
1170 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1171 struct compound_hdr *hdr)
1172 {
1173 __be32 *p;
1174
1175 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1176 if (bm2) {
1177 p = reserve_space(xdr, 16);
1178 *p++ = cpu_to_be32(3);
1179 *p++ = cpu_to_be32(bm0);
1180 *p++ = cpu_to_be32(bm1);
1181 *p = cpu_to_be32(bm2);
1182 } else if (bm1) {
1183 p = reserve_space(xdr, 12);
1184 *p++ = cpu_to_be32(2);
1185 *p++ = cpu_to_be32(bm0);
1186 *p = cpu_to_be32(bm1);
1187 } else {
1188 p = reserve_space(xdr, 8);
1189 *p++ = cpu_to_be32(1);
1190 *p = cpu_to_be32(bm0);
1191 }
1192 }
1193
1194 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1195 {
1196 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1197 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1198 }
1199
1200 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1201 struct compound_hdr *hdr)
1202 {
1203 encode_getattr_three(xdr,
1204 bitmask[0] & nfs4_fattr_bitmap[0],
1205 bitmask[1] & nfs4_fattr_bitmap[1],
1206 bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD,
1207 hdr);
1208 }
1209
1210 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1211 {
1212 encode_getattr_three(xdr,
1213 bitmask[0] & nfs4_fsinfo_bitmap[0],
1214 bitmask[1] & nfs4_fsinfo_bitmap[1],
1215 bitmask[2] & nfs4_fsinfo_bitmap[2],
1216 hdr);
1217 }
1218
1219 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1220 {
1221 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1222 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1223 }
1224
1225 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1226 {
1227 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1228 }
1229
1230 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1231 {
1232 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1233 encode_string(xdr, name->len, name->name);
1234 }
1235
1236 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1237 {
1238 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1239 return block ? NFS4_READW_LT : NFS4_READ_LT;
1240 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1241 }
1242
1243 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1244 {
1245 if (fl->fl_end == OFFSET_MAX)
1246 return ~(uint64_t)0;
1247 return fl->fl_end - fl->fl_start + 1;
1248 }
1249
1250 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1251 {
1252 __be32 *p;
1253
1254 p = reserve_space(xdr, 32);
1255 p = xdr_encode_hyper(p, lowner->clientid);
1256 *p++ = cpu_to_be32(20);
1257 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1258 *p++ = cpu_to_be32(lowner->s_dev);
1259 xdr_encode_hyper(p, lowner->id);
1260 }
1261
1262 /*
1263 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1264 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1265 */
1266 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1267 {
1268 __be32 *p;
1269
1270 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1271 p = reserve_space(xdr, 28);
1272 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1273 *p++ = cpu_to_be32(args->reclaim);
1274 p = xdr_encode_hyper(p, args->fl->fl_start);
1275 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1276 *p = cpu_to_be32(args->new_lock_owner);
1277 if (args->new_lock_owner){
1278 encode_nfs4_seqid(xdr, args->open_seqid);
1279 encode_nfs4_stateid(xdr, args->open_stateid);
1280 encode_nfs4_seqid(xdr, args->lock_seqid);
1281 encode_lockowner(xdr, &args->lock_owner);
1282 }
1283 else {
1284 encode_nfs4_stateid(xdr, args->lock_stateid);
1285 encode_nfs4_seqid(xdr, args->lock_seqid);
1286 }
1287 }
1288
1289 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1290 {
1291 __be32 *p;
1292
1293 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1294 p = reserve_space(xdr, 20);
1295 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1296 p = xdr_encode_hyper(p, args->fl->fl_start);
1297 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1298 encode_lockowner(xdr, &args->lock_owner);
1299 }
1300
1301 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1302 {
1303 __be32 *p;
1304
1305 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1306 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1307 encode_nfs4_seqid(xdr, args->seqid);
1308 encode_nfs4_stateid(xdr, args->stateid);
1309 p = reserve_space(xdr, 16);
1310 p = xdr_encode_hyper(p, args->fl->fl_start);
1311 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1312 }
1313
1314 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1315 {
1316 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1317 encode_lockowner(xdr, lowner);
1318 }
1319
1320 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1321 {
1322 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1323 encode_string(xdr, name->len, name->name);
1324 }
1325
1326 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1327 {
1328 __be32 *p;
1329
1330 p = reserve_space(xdr, 8);
1331 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1332 case FMODE_READ:
1333 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1334 break;
1335 case FMODE_WRITE:
1336 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1337 break;
1338 case FMODE_READ|FMODE_WRITE:
1339 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1340 break;
1341 default:
1342 *p++ = cpu_to_be32(0);
1343 }
1344 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1345 }
1346
1347 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1348 {
1349 __be32 *p;
1350 /*
1351 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1352 * owner 4 = 32
1353 */
1354 encode_nfs4_seqid(xdr, arg->seqid);
1355 encode_share_access(xdr, arg->fmode);
1356 p = reserve_space(xdr, 36);
1357 p = xdr_encode_hyper(p, arg->clientid);
1358 *p++ = cpu_to_be32(24);
1359 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1360 *p++ = cpu_to_be32(arg->server->s_dev);
1361 *p++ = cpu_to_be32(arg->id.uniquifier);
1362 xdr_encode_hyper(p, arg->id.create_time);
1363 }
1364
1365 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1366 {
1367 __be32 *p;
1368 struct nfs_client *clp;
1369
1370 p = reserve_space(xdr, 4);
1371 switch(arg->open_flags & O_EXCL) {
1372 case 0:
1373 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1374 encode_attrs(xdr, arg->u.attrs, arg->server);
1375 break;
1376 default:
1377 clp = arg->server->nfs_client;
1378 if (clp->cl_mvops->minor_version > 0) {
1379 if (nfs4_has_persistent_session(clp)) {
1380 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1381 encode_attrs(xdr, arg->u.attrs, arg->server);
1382 } else {
1383 struct iattr dummy;
1384
1385 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1386 encode_nfs4_verifier(xdr, &arg->u.verifier);
1387 dummy.ia_valid = 0;
1388 encode_attrs(xdr, &dummy, arg->server);
1389 }
1390 } else {
1391 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1392 encode_nfs4_verifier(xdr, &arg->u.verifier);
1393 }
1394 }
1395 }
1396
1397 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1398 {
1399 __be32 *p;
1400
1401 p = reserve_space(xdr, 4);
1402 switch (arg->open_flags & O_CREAT) {
1403 case 0:
1404 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1405 break;
1406 default:
1407 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1408 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1409 encode_createmode(xdr, arg);
1410 }
1411 }
1412
1413 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1414 {
1415 __be32 *p;
1416
1417 p = reserve_space(xdr, 4);
1418 switch (delegation_type) {
1419 case 0:
1420 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1421 break;
1422 case FMODE_READ:
1423 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1424 break;
1425 case FMODE_WRITE|FMODE_READ:
1426 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1427 break;
1428 default:
1429 BUG();
1430 }
1431 }
1432
1433 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1434 {
1435 __be32 *p;
1436
1437 p = reserve_space(xdr, 4);
1438 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1439 encode_string(xdr, name->len, name->name);
1440 }
1441
1442 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1443 {
1444 __be32 *p;
1445
1446 p = reserve_space(xdr, 4);
1447 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1448 encode_delegation_type(xdr, type);
1449 }
1450
1451 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1452 {
1453 __be32 *p;
1454
1455 p = reserve_space(xdr, 4);
1456 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1457 encode_nfs4_stateid(xdr, stateid);
1458 encode_string(xdr, name->len, name->name);
1459 }
1460
1461 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1462 {
1463 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1464 encode_openhdr(xdr, arg);
1465 encode_opentype(xdr, arg);
1466 switch (arg->claim) {
1467 case NFS4_OPEN_CLAIM_NULL:
1468 encode_claim_null(xdr, arg->name);
1469 break;
1470 case NFS4_OPEN_CLAIM_PREVIOUS:
1471 encode_claim_previous(xdr, arg->u.delegation_type);
1472 break;
1473 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1474 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1475 break;
1476 default:
1477 BUG();
1478 }
1479 }
1480
1481 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1482 {
1483 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1484 encode_nfs4_stateid(xdr, arg->stateid);
1485 encode_nfs4_seqid(xdr, arg->seqid);
1486 }
1487
1488 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1489 {
1490 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1491 encode_nfs4_stateid(xdr, arg->stateid);
1492 encode_nfs4_seqid(xdr, arg->seqid);
1493 encode_share_access(xdr, arg->fmode);
1494 }
1495
1496 static void
1497 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1498 {
1499 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1500 encode_string(xdr, fh->size, fh->data);
1501 }
1502
1503 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1504 {
1505 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1506 }
1507
1508 static void encode_open_stateid(struct xdr_stream *xdr,
1509 const struct nfs_open_context *ctx,
1510 const struct nfs_lock_context *l_ctx,
1511 fmode_t fmode,
1512 int zero_seqid)
1513 {
1514 nfs4_stateid stateid;
1515
1516 if (ctx->state != NULL) {
1517 nfs4_select_rw_stateid(&stateid, ctx->state,
1518 fmode, l_ctx->lockowner, l_ctx->pid);
1519 if (zero_seqid)
1520 stateid.seqid = 0;
1521 encode_nfs4_stateid(xdr, &stateid);
1522 } else
1523 encode_nfs4_stateid(xdr, &zero_stateid);
1524 }
1525
1526 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1527 {
1528 __be32 *p;
1529
1530 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1531 encode_open_stateid(xdr, args->context, args->lock_context,
1532 FMODE_READ, hdr->minorversion);
1533
1534 p = reserve_space(xdr, 12);
1535 p = xdr_encode_hyper(p, args->offset);
1536 *p = cpu_to_be32(args->count);
1537 }
1538
1539 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1540 {
1541 uint32_t attrs[2] = {
1542 FATTR4_WORD0_RDATTR_ERROR,
1543 FATTR4_WORD1_MOUNTED_ON_FILEID,
1544 };
1545 uint32_t dircount = readdir->count >> 1;
1546 __be32 *p, verf[2];
1547
1548 if (readdir->plus) {
1549 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1550 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1551 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1552 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1553 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1554 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1555 dircount >>= 1;
1556 }
1557 /* Use mounted_on_fileid only if the server supports it */
1558 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1559 attrs[0] |= FATTR4_WORD0_FILEID;
1560
1561 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1562 encode_uint64(xdr, readdir->cookie);
1563 encode_nfs4_verifier(xdr, &readdir->verifier);
1564 p = reserve_space(xdr, 20);
1565 *p++ = cpu_to_be32(dircount);
1566 *p++ = cpu_to_be32(readdir->count);
1567 *p++ = cpu_to_be32(2);
1568
1569 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1570 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1571 memcpy(verf, readdir->verifier.data, sizeof(verf));
1572 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1573 __func__,
1574 (unsigned long long)readdir->cookie,
1575 verf[0], verf[1],
1576 attrs[0] & readdir->bitmask[0],
1577 attrs[1] & readdir->bitmask[1]);
1578 }
1579
1580 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1581 {
1582 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1583 }
1584
1585 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1586 {
1587 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1588 encode_string(xdr, name->len, name->name);
1589 }
1590
1591 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1592 {
1593 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1594 encode_string(xdr, oldname->len, oldname->name);
1595 encode_string(xdr, newname->len, newname->name);
1596 }
1597
1598 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1599 struct compound_hdr *hdr)
1600 {
1601 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1602 encode_uint64(xdr, clid);
1603 }
1604
1605 static void
1606 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1607 {
1608 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1609 }
1610
1611 static void
1612 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1613 {
1614 __be32 *p;
1615
1616 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1617 encode_nfs4_stateid(xdr, &zero_stateid);
1618 p = reserve_space(xdr, 2*4);
1619 *p++ = cpu_to_be32(1);
1620 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1621 BUG_ON(arg->acl_len % 4);
1622 p = reserve_space(xdr, 4);
1623 *p = cpu_to_be32(arg->acl_len);
1624 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1625 }
1626
1627 static void
1628 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1629 {
1630 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1631 }
1632
1633 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1634 {
1635 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1636 encode_nfs4_stateid(xdr, &arg->stateid);
1637 encode_attrs(xdr, arg->iap, server);
1638 }
1639
1640 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1641 {
1642 __be32 *p;
1643
1644 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1645 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1646
1647 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1648 p = reserve_space(xdr, 4);
1649 *p = cpu_to_be32(setclientid->sc_prog);
1650 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1651 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1652 p = reserve_space(xdr, 4);
1653 *p = cpu_to_be32(setclientid->sc_cb_ident);
1654 }
1655
1656 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1657 {
1658 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1659 decode_setclientid_confirm_maxsz, hdr);
1660 encode_uint64(xdr, arg->clientid);
1661 encode_nfs4_verifier(xdr, &arg->confirm);
1662 }
1663
1664 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1665 {
1666 __be32 *p;
1667
1668 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1669 encode_open_stateid(xdr, args->context, args->lock_context,
1670 FMODE_WRITE, hdr->minorversion);
1671
1672 p = reserve_space(xdr, 16);
1673 p = xdr_encode_hyper(p, args->offset);
1674 *p++ = cpu_to_be32(args->stable);
1675 *p = cpu_to_be32(args->count);
1676
1677 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1678 }
1679
1680 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1681 {
1682 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1683 encode_nfs4_stateid(xdr, stateid);
1684 }
1685
1686 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1687 {
1688 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1689 encode_string(xdr, name->len, name->name);
1690 }
1691
1692 #if defined(CONFIG_NFS_V4_1)
1693 /* NFSv4.1 operations */
1694 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1695 struct nfs4_session *session,
1696 struct compound_hdr *hdr)
1697 {
1698 __be32 *p;
1699
1700 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1701 decode_bind_conn_to_session_maxsz, hdr);
1702 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1703 p = xdr_reserve_space(xdr, 8);
1704 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1705 *p = 0; /* use_conn_in_rdma_mode = False */
1706 }
1707
1708 static void encode_exchange_id(struct xdr_stream *xdr,
1709 struct nfs41_exchange_id_args *args,
1710 struct compound_hdr *hdr)
1711 {
1712 __be32 *p;
1713 char impl_name[NFS4_OPAQUE_LIMIT];
1714 int len = 0;
1715
1716 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1717 encode_nfs4_verifier(xdr, args->verifier);
1718
1719 encode_string(xdr, args->id_len, args->id);
1720
1721 p = reserve_space(xdr, 12);
1722 *p++ = cpu_to_be32(args->flags);
1723 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1724
1725 if (send_implementation_id &&
1726 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1727 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1728 <= NFS4_OPAQUE_LIMIT + 1)
1729 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1730 utsname()->sysname, utsname()->release,
1731 utsname()->version, utsname()->machine);
1732
1733 if (len > 0) {
1734 *p = cpu_to_be32(1); /* implementation id array length=1 */
1735
1736 encode_string(xdr,
1737 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1738 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1739 encode_string(xdr, len, impl_name);
1740 /* just send zeros for nii_date - the date is in nii_name */
1741 p = reserve_space(xdr, 12);
1742 p = xdr_encode_hyper(p, 0);
1743 *p = cpu_to_be32(0);
1744 } else
1745 *p = cpu_to_be32(0); /* implementation id array length=0 */
1746 }
1747
1748 static void encode_create_session(struct xdr_stream *xdr,
1749 struct nfs41_create_session_args *args,
1750 struct compound_hdr *hdr)
1751 {
1752 __be32 *p;
1753 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1754 uint32_t len;
1755 struct nfs_client *clp = args->client;
1756 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1757 u32 max_resp_sz_cached;
1758
1759 /*
1760 * Assumes OPEN is the biggest non-idempotent compound.
1761 * 2 is the verifier.
1762 */
1763 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1764 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1765
1766 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1767 clp->cl_ipaddr);
1768
1769 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1770 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1771 p = xdr_encode_hyper(p, clp->cl_clientid);
1772 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1773 *p++ = cpu_to_be32(args->flags); /*flags */
1774
1775 /* Fore Channel */
1776 *p++ = cpu_to_be32(0); /* header padding size */
1777 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1778 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1779 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1780 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1781 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1782 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1783
1784 /* Back Channel */
1785 *p++ = cpu_to_be32(0); /* header padding size */
1786 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1787 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1788 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1789 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1790 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1791 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1792
1793 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1794 *p++ = cpu_to_be32(1);
1795 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1796
1797 /* authsys_parms rfc1831 */
1798 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1799 p = xdr_encode_opaque(p, machine_name, len);
1800 *p++ = cpu_to_be32(0); /* UID */
1801 *p++ = cpu_to_be32(0); /* GID */
1802 *p = cpu_to_be32(0); /* No more gids */
1803 }
1804
1805 static void encode_destroy_session(struct xdr_stream *xdr,
1806 struct nfs4_session *session,
1807 struct compound_hdr *hdr)
1808 {
1809 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1810 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1811 }
1812
1813 static void encode_destroy_clientid(struct xdr_stream *xdr,
1814 uint64_t clientid,
1815 struct compound_hdr *hdr)
1816 {
1817 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1818 encode_uint64(xdr, clientid);
1819 }
1820
1821 static void encode_reclaim_complete(struct xdr_stream *xdr,
1822 struct nfs41_reclaim_complete_args *args,
1823 struct compound_hdr *hdr)
1824 {
1825 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1826 encode_uint32(xdr, args->one_fs);
1827 }
1828 #endif /* CONFIG_NFS_V4_1 */
1829
1830 static void encode_sequence(struct xdr_stream *xdr,
1831 const struct nfs4_sequence_args *args,
1832 struct compound_hdr *hdr)
1833 {
1834 #if defined(CONFIG_NFS_V4_1)
1835 struct nfs4_session *session = args->sa_session;
1836 struct nfs4_slot_table *tp;
1837 struct nfs4_slot *slot;
1838 __be32 *p;
1839
1840 if (!session)
1841 return;
1842
1843 tp = &session->fc_slot_table;
1844
1845 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1846 slot = tp->slots + args->sa_slotid;
1847
1848 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1849
1850 /*
1851 * Sessionid + seqid + slotid + max slotid + cache_this
1852 */
1853 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1854 "max_slotid=%d cache_this=%d\n",
1855 __func__,
1856 ((u32 *)session->sess_id.data)[0],
1857 ((u32 *)session->sess_id.data)[1],
1858 ((u32 *)session->sess_id.data)[2],
1859 ((u32 *)session->sess_id.data)[3],
1860 slot->seq_nr, args->sa_slotid,
1861 tp->highest_used_slotid, args->sa_cache_this);
1862 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1863 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1864 *p++ = cpu_to_be32(slot->seq_nr);
1865 *p++ = cpu_to_be32(args->sa_slotid);
1866 *p++ = cpu_to_be32(tp->highest_used_slotid);
1867 *p = cpu_to_be32(args->sa_cache_this);
1868 #endif /* CONFIG_NFS_V4_1 */
1869 }
1870
1871 #ifdef CONFIG_NFS_V4_1
1872 static void
1873 encode_getdevicelist(struct xdr_stream *xdr,
1874 const struct nfs4_getdevicelist_args *args,
1875 struct compound_hdr *hdr)
1876 {
1877 __be32 *p;
1878 nfs4_verifier dummy = {
1879 .data = "dummmmmy",
1880 };
1881
1882 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1883 p = reserve_space(xdr, 16);
1884 *p++ = cpu_to_be32(args->layoutclass);
1885 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1886 xdr_encode_hyper(p, 0ULL); /* cookie */
1887 encode_nfs4_verifier(xdr, &dummy);
1888 }
1889
1890 static void
1891 encode_getdeviceinfo(struct xdr_stream *xdr,
1892 const struct nfs4_getdeviceinfo_args *args,
1893 struct compound_hdr *hdr)
1894 {
1895 __be32 *p;
1896
1897 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1898 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1899 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1900 NFS4_DEVICEID4_SIZE);
1901 *p++ = cpu_to_be32(args->pdev->layout_type);
1902 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1903 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1904 }
1905
1906 static void
1907 encode_layoutget(struct xdr_stream *xdr,
1908 const struct nfs4_layoutget_args *args,
1909 struct compound_hdr *hdr)
1910 {
1911 __be32 *p;
1912
1913 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1914 p = reserve_space(xdr, 36);
1915 *p++ = cpu_to_be32(0); /* Signal layout available */
1916 *p++ = cpu_to_be32(args->type);
1917 *p++ = cpu_to_be32(args->range.iomode);
1918 p = xdr_encode_hyper(p, args->range.offset);
1919 p = xdr_encode_hyper(p, args->range.length);
1920 p = xdr_encode_hyper(p, args->minlength);
1921 encode_nfs4_stateid(xdr, &args->stateid);
1922 encode_uint32(xdr, args->maxcount);
1923
1924 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1925 __func__,
1926 args->type,
1927 args->range.iomode,
1928 (unsigned long)args->range.offset,
1929 (unsigned long)args->range.length,
1930 args->maxcount);
1931 }
1932
1933 static int
1934 encode_layoutcommit(struct xdr_stream *xdr,
1935 struct inode *inode,
1936 const struct nfs4_layoutcommit_args *args,
1937 struct compound_hdr *hdr)
1938 {
1939 __be32 *p;
1940
1941 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1942 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1943
1944 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1945 p = reserve_space(xdr, 20);
1946 /* Only whole file layouts */
1947 p = xdr_encode_hyper(p, 0); /* offset */
1948 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1949 *p = cpu_to_be32(0); /* reclaim */
1950 encode_nfs4_stateid(xdr, &args->stateid);
1951 p = reserve_space(xdr, 20);
1952 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1953 p = xdr_encode_hyper(p, args->lastbytewritten);
1954 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1955 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1956
1957 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1958 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1959 NFS_I(inode)->layout, xdr, args);
1960 else
1961 encode_uint32(xdr, 0); /* no layout-type payload */
1962
1963 return 0;
1964 }
1965
1966 static void
1967 encode_layoutreturn(struct xdr_stream *xdr,
1968 const struct nfs4_layoutreturn_args *args,
1969 struct compound_hdr *hdr)
1970 {
1971 __be32 *p;
1972
1973 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1974 p = reserve_space(xdr, 16);
1975 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1976 *p++ = cpu_to_be32(args->layout_type);
1977 *p++ = cpu_to_be32(IOMODE_ANY);
1978 *p = cpu_to_be32(RETURN_FILE);
1979 p = reserve_space(xdr, 16);
1980 p = xdr_encode_hyper(p, 0);
1981 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1982 spin_lock(&args->inode->i_lock);
1983 encode_nfs4_stateid(xdr, &args->stateid);
1984 spin_unlock(&args->inode->i_lock);
1985 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1986 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1987 NFS_I(args->inode)->layout, xdr, args);
1988 } else
1989 encode_uint32(xdr, 0);
1990 }
1991
1992 static int
1993 encode_secinfo_no_name(struct xdr_stream *xdr,
1994 const struct nfs41_secinfo_no_name_args *args,
1995 struct compound_hdr *hdr)
1996 {
1997 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
1998 encode_uint32(xdr, args->style);
1999 return 0;
2000 }
2001
2002 static void encode_test_stateid(struct xdr_stream *xdr,
2003 struct nfs41_test_stateid_args *args,
2004 struct compound_hdr *hdr)
2005 {
2006 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2007 encode_uint32(xdr, 1);
2008 encode_nfs4_stateid(xdr, args->stateid);
2009 }
2010
2011 static void encode_free_stateid(struct xdr_stream *xdr,
2012 struct nfs41_free_stateid_args *args,
2013 struct compound_hdr *hdr)
2014 {
2015 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2016 encode_nfs4_stateid(xdr, args->stateid);
2017 }
2018 #endif /* CONFIG_NFS_V4_1 */
2019
2020 /*
2021 * END OF "GENERIC" ENCODE ROUTINES.
2022 */
2023
2024 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2025 {
2026 #if defined(CONFIG_NFS_V4_1)
2027 if (args->sa_session)
2028 return args->sa_session->clp->cl_mvops->minor_version;
2029 #endif /* CONFIG_NFS_V4_1 */
2030 return 0;
2031 }
2032
2033 /*
2034 * Encode an ACCESS request
2035 */
2036 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2037 const struct nfs4_accessargs *args)
2038 {
2039 struct compound_hdr hdr = {
2040 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2041 };
2042
2043 encode_compound_hdr(xdr, req, &hdr);
2044 encode_sequence(xdr, &args->seq_args, &hdr);
2045 encode_putfh(xdr, args->fh, &hdr);
2046 encode_access(xdr, args->access, &hdr);
2047 encode_getfattr(xdr, args->bitmask, &hdr);
2048 encode_nops(&hdr);
2049 }
2050
2051 /*
2052 * Encode LOOKUP request
2053 */
2054 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2055 const struct nfs4_lookup_arg *args)
2056 {
2057 struct compound_hdr hdr = {
2058 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2059 };
2060
2061 encode_compound_hdr(xdr, req, &hdr);
2062 encode_sequence(xdr, &args->seq_args, &hdr);
2063 encode_putfh(xdr, args->dir_fh, &hdr);
2064 encode_lookup(xdr, args->name, &hdr);
2065 encode_getfh(xdr, &hdr);
2066 encode_getfattr(xdr, args->bitmask, &hdr);
2067 encode_nops(&hdr);
2068 }
2069
2070 /*
2071 * Encode LOOKUP_ROOT request
2072 */
2073 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2074 struct xdr_stream *xdr,
2075 const struct nfs4_lookup_root_arg *args)
2076 {
2077 struct compound_hdr hdr = {
2078 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2079 };
2080
2081 encode_compound_hdr(xdr, req, &hdr);
2082 encode_sequence(xdr, &args->seq_args, &hdr);
2083 encode_putrootfh(xdr, &hdr);
2084 encode_getfh(xdr, &hdr);
2085 encode_getfattr(xdr, args->bitmask, &hdr);
2086 encode_nops(&hdr);
2087 }
2088
2089 /*
2090 * Encode REMOVE request
2091 */
2092 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2093 const struct nfs_removeargs *args)
2094 {
2095 struct compound_hdr hdr = {
2096 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2097 };
2098
2099 encode_compound_hdr(xdr, req, &hdr);
2100 encode_sequence(xdr, &args->seq_args, &hdr);
2101 encode_putfh(xdr, args->fh, &hdr);
2102 encode_remove(xdr, &args->name, &hdr);
2103 encode_nops(&hdr);
2104 }
2105
2106 /*
2107 * Encode RENAME request
2108 */
2109 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2110 const struct nfs_renameargs *args)
2111 {
2112 struct compound_hdr hdr = {
2113 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2114 };
2115
2116 encode_compound_hdr(xdr, req, &hdr);
2117 encode_sequence(xdr, &args->seq_args, &hdr);
2118 encode_putfh(xdr, args->old_dir, &hdr);
2119 encode_savefh(xdr, &hdr);
2120 encode_putfh(xdr, args->new_dir, &hdr);
2121 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2122 encode_nops(&hdr);
2123 }
2124
2125 /*
2126 * Encode LINK request
2127 */
2128 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2129 const struct nfs4_link_arg *args)
2130 {
2131 struct compound_hdr hdr = {
2132 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2133 };
2134
2135 encode_compound_hdr(xdr, req, &hdr);
2136 encode_sequence(xdr, &args->seq_args, &hdr);
2137 encode_putfh(xdr, args->fh, &hdr);
2138 encode_savefh(xdr, &hdr);
2139 encode_putfh(xdr, args->dir_fh, &hdr);
2140 encode_link(xdr, args->name, &hdr);
2141 encode_restorefh(xdr, &hdr);
2142 encode_getfattr(xdr, args->bitmask, &hdr);
2143 encode_nops(&hdr);
2144 }
2145
2146 /*
2147 * Encode CREATE request
2148 */
2149 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2150 const struct nfs4_create_arg *args)
2151 {
2152 struct compound_hdr hdr = {
2153 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2154 };
2155
2156 encode_compound_hdr(xdr, req, &hdr);
2157 encode_sequence(xdr, &args->seq_args, &hdr);
2158 encode_putfh(xdr, args->dir_fh, &hdr);
2159 encode_create(xdr, args, &hdr);
2160 encode_getfh(xdr, &hdr);
2161 encode_getfattr(xdr, args->bitmask, &hdr);
2162 encode_nops(&hdr);
2163 }
2164
2165 /*
2166 * Encode SYMLINK request
2167 */
2168 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2169 const struct nfs4_create_arg *args)
2170 {
2171 nfs4_xdr_enc_create(req, xdr, args);
2172 }
2173
2174 /*
2175 * Encode GETATTR request
2176 */
2177 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2178 const struct nfs4_getattr_arg *args)
2179 {
2180 struct compound_hdr hdr = {
2181 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2182 };
2183
2184 encode_compound_hdr(xdr, req, &hdr);
2185 encode_sequence(xdr, &args->seq_args, &hdr);
2186 encode_putfh(xdr, args->fh, &hdr);
2187 encode_getfattr(xdr, args->bitmask, &hdr);
2188 encode_nops(&hdr);
2189 }
2190
2191 /*
2192 * Encode a CLOSE request
2193 */
2194 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2195 struct nfs_closeargs *args)
2196 {
2197 struct compound_hdr hdr = {
2198 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2199 };
2200
2201 encode_compound_hdr(xdr, req, &hdr);
2202 encode_sequence(xdr, &args->seq_args, &hdr);
2203 encode_putfh(xdr, args->fh, &hdr);
2204 encode_close(xdr, args, &hdr);
2205 encode_getfattr(xdr, args->bitmask, &hdr);
2206 encode_nops(&hdr);
2207 }
2208
2209 /*
2210 * Encode an OPEN request
2211 */
2212 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2213 struct nfs_openargs *args)
2214 {
2215 struct compound_hdr hdr = {
2216 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2217 };
2218
2219 encode_compound_hdr(xdr, req, &hdr);
2220 encode_sequence(xdr, &args->seq_args, &hdr);
2221 encode_putfh(xdr, args->fh, &hdr);
2222 encode_open(xdr, args, &hdr);
2223 encode_getfh(xdr, &hdr);
2224 encode_getfattr_open(xdr, args->bitmask, &hdr);
2225 encode_nops(&hdr);
2226 }
2227
2228 /*
2229 * Encode an OPEN_CONFIRM request
2230 */
2231 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2232 struct xdr_stream *xdr,
2233 struct nfs_open_confirmargs *args)
2234 {
2235 struct compound_hdr hdr = {
2236 .nops = 0,
2237 };
2238
2239 encode_compound_hdr(xdr, req, &hdr);
2240 encode_putfh(xdr, args->fh, &hdr);
2241 encode_open_confirm(xdr, args, &hdr);
2242 encode_nops(&hdr);
2243 }
2244
2245 /*
2246 * Encode an OPEN request with no attributes.
2247 */
2248 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2249 struct xdr_stream *xdr,
2250 struct nfs_openargs *args)
2251 {
2252 struct compound_hdr hdr = {
2253 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2254 };
2255
2256 encode_compound_hdr(xdr, req, &hdr);
2257 encode_sequence(xdr, &args->seq_args, &hdr);
2258 encode_putfh(xdr, args->fh, &hdr);
2259 encode_open(xdr, args, &hdr);
2260 encode_getfattr(xdr, args->bitmask, &hdr);
2261 encode_nops(&hdr);
2262 }
2263
2264 /*
2265 * Encode an OPEN_DOWNGRADE request
2266 */
2267 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2268 struct xdr_stream *xdr,
2269 struct nfs_closeargs *args)
2270 {
2271 struct compound_hdr hdr = {
2272 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2273 };
2274
2275 encode_compound_hdr(xdr, req, &hdr);
2276 encode_sequence(xdr, &args->seq_args, &hdr);
2277 encode_putfh(xdr, args->fh, &hdr);
2278 encode_open_downgrade(xdr, args, &hdr);
2279 encode_getfattr(xdr, args->bitmask, &hdr);
2280 encode_nops(&hdr);
2281 }
2282
2283 /*
2284 * Encode a LOCK request
2285 */
2286 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2287 struct nfs_lock_args *args)
2288 {
2289 struct compound_hdr hdr = {
2290 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2291 };
2292
2293 encode_compound_hdr(xdr, req, &hdr);
2294 encode_sequence(xdr, &args->seq_args, &hdr);
2295 encode_putfh(xdr, args->fh, &hdr);
2296 encode_lock(xdr, args, &hdr);
2297 encode_nops(&hdr);
2298 }
2299
2300 /*
2301 * Encode a LOCKT request
2302 */
2303 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2304 struct nfs_lockt_args *args)
2305 {
2306 struct compound_hdr hdr = {
2307 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2308 };
2309
2310 encode_compound_hdr(xdr, req, &hdr);
2311 encode_sequence(xdr, &args->seq_args, &hdr);
2312 encode_putfh(xdr, args->fh, &hdr);
2313 encode_lockt(xdr, args, &hdr);
2314 encode_nops(&hdr);
2315 }
2316
2317 /*
2318 * Encode a LOCKU request
2319 */
2320 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2321 struct nfs_locku_args *args)
2322 {
2323 struct compound_hdr hdr = {
2324 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2325 };
2326
2327 encode_compound_hdr(xdr, req, &hdr);
2328 encode_sequence(xdr, &args->seq_args, &hdr);
2329 encode_putfh(xdr, args->fh, &hdr);
2330 encode_locku(xdr, args, &hdr);
2331 encode_nops(&hdr);
2332 }
2333
2334 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2335 struct xdr_stream *xdr,
2336 struct nfs_release_lockowner_args *args)
2337 {
2338 struct compound_hdr hdr = {
2339 .minorversion = 0,
2340 };
2341
2342 encode_compound_hdr(xdr, req, &hdr);
2343 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2344 encode_nops(&hdr);
2345 }
2346
2347 /*
2348 * Encode a READLINK request
2349 */
2350 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2351 const struct nfs4_readlink *args)
2352 {
2353 struct compound_hdr hdr = {
2354 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2355 };
2356
2357 encode_compound_hdr(xdr, req, &hdr);
2358 encode_sequence(xdr, &args->seq_args, &hdr);
2359 encode_putfh(xdr, args->fh, &hdr);
2360 encode_readlink(xdr, args, req, &hdr);
2361
2362 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2363 args->pgbase, args->pglen);
2364 encode_nops(&hdr);
2365 }
2366
2367 /*
2368 * Encode a READDIR request
2369 */
2370 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2371 const struct nfs4_readdir_arg *args)
2372 {
2373 struct compound_hdr hdr = {
2374 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2375 };
2376
2377 encode_compound_hdr(xdr, req, &hdr);
2378 encode_sequence(xdr, &args->seq_args, &hdr);
2379 encode_putfh(xdr, args->fh, &hdr);
2380 encode_readdir(xdr, args, req, &hdr);
2381
2382 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2383 args->pgbase, args->count);
2384 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2385 __func__, hdr.replen << 2, args->pages,
2386 args->pgbase, args->count);
2387 encode_nops(&hdr);
2388 }
2389
2390 /*
2391 * Encode a READ request
2392 */
2393 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2394 struct nfs_readargs *args)
2395 {
2396 struct compound_hdr hdr = {
2397 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2398 };
2399
2400 encode_compound_hdr(xdr, req, &hdr);
2401 encode_sequence(xdr, &args->seq_args, &hdr);
2402 encode_putfh(xdr, args->fh, &hdr);
2403 encode_read(xdr, args, &hdr);
2404
2405 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2406 args->pages, args->pgbase, args->count);
2407 req->rq_rcv_buf.flags |= XDRBUF_READ;
2408 encode_nops(&hdr);
2409 }
2410
2411 /*
2412 * Encode an SETATTR request
2413 */
2414 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2415 struct nfs_setattrargs *args)
2416 {
2417 struct compound_hdr hdr = {
2418 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2419 };
2420
2421 encode_compound_hdr(xdr, req, &hdr);
2422 encode_sequence(xdr, &args->seq_args, &hdr);
2423 encode_putfh(xdr, args->fh, &hdr);
2424 encode_setattr(xdr, args, args->server, &hdr);
2425 encode_getfattr(xdr, args->bitmask, &hdr);
2426 encode_nops(&hdr);
2427 }
2428
2429 /*
2430 * Encode a GETACL request
2431 */
2432 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2433 struct nfs_getaclargs *args)
2434 {
2435 struct compound_hdr hdr = {
2436 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2437 };
2438 uint32_t replen;
2439
2440 encode_compound_hdr(xdr, req, &hdr);
2441 encode_sequence(xdr, &args->seq_args, &hdr);
2442 encode_putfh(xdr, args->fh, &hdr);
2443 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2444 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2445
2446 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2447 args->acl_pages, args->acl_pgbase, args->acl_len);
2448
2449 encode_nops(&hdr);
2450 }
2451
2452 /*
2453 * Encode a WRITE request
2454 */
2455 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2456 struct nfs_writeargs *args)
2457 {
2458 struct compound_hdr hdr = {
2459 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2460 };
2461
2462 encode_compound_hdr(xdr, req, &hdr);
2463 encode_sequence(xdr, &args->seq_args, &hdr);
2464 encode_putfh(xdr, args->fh, &hdr);
2465 encode_write(xdr, args, &hdr);
2466 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2467 if (args->bitmask)
2468 encode_getfattr(xdr, args->bitmask, &hdr);
2469 encode_nops(&hdr);
2470 }
2471
2472 /*
2473 * a COMMIT request
2474 */
2475 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2476 struct nfs_commitargs *args)
2477 {
2478 struct compound_hdr hdr = {
2479 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2480 };
2481
2482 encode_compound_hdr(xdr, req, &hdr);
2483 encode_sequence(xdr, &args->seq_args, &hdr);
2484 encode_putfh(xdr, args->fh, &hdr);
2485 encode_commit(xdr, args, &hdr);
2486 encode_nops(&hdr);
2487 }
2488
2489 /*
2490 * FSINFO request
2491 */
2492 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2493 struct nfs4_fsinfo_arg *args)
2494 {
2495 struct compound_hdr hdr = {
2496 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2497 };
2498
2499 encode_compound_hdr(xdr, req, &hdr);
2500 encode_sequence(xdr, &args->seq_args, &hdr);
2501 encode_putfh(xdr, args->fh, &hdr);
2502 encode_fsinfo(xdr, args->bitmask, &hdr);
2503 encode_nops(&hdr);
2504 }
2505
2506 /*
2507 * a PATHCONF request
2508 */
2509 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2510 const struct nfs4_pathconf_arg *args)
2511 {
2512 struct compound_hdr hdr = {
2513 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2514 };
2515
2516 encode_compound_hdr(xdr, req, &hdr);
2517 encode_sequence(xdr, &args->seq_args, &hdr);
2518 encode_putfh(xdr, args->fh, &hdr);
2519 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2520 &hdr);
2521 encode_nops(&hdr);
2522 }
2523
2524 /*
2525 * a STATFS request
2526 */
2527 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2528 const struct nfs4_statfs_arg *args)
2529 {
2530 struct compound_hdr hdr = {
2531 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2532 };
2533
2534 encode_compound_hdr(xdr, req, &hdr);
2535 encode_sequence(xdr, &args->seq_args, &hdr);
2536 encode_putfh(xdr, args->fh, &hdr);
2537 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2538 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2539 encode_nops(&hdr);
2540 }
2541
2542 /*
2543 * GETATTR_BITMAP request
2544 */
2545 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2546 struct xdr_stream *xdr,
2547 struct nfs4_server_caps_arg *args)
2548 {
2549 struct compound_hdr hdr = {
2550 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2551 };
2552
2553 encode_compound_hdr(xdr, req, &hdr);
2554 encode_sequence(xdr, &args->seq_args, &hdr);
2555 encode_putfh(xdr, args->fhandle, &hdr);
2556 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2557 FATTR4_WORD0_FH_EXPIRE_TYPE|
2558 FATTR4_WORD0_LINK_SUPPORT|
2559 FATTR4_WORD0_SYMLINK_SUPPORT|
2560 FATTR4_WORD0_ACLSUPPORT, &hdr);
2561 encode_nops(&hdr);
2562 }
2563
2564 /*
2565 * a RENEW request
2566 */
2567 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2568 struct nfs_client *clp)
2569 {
2570 struct compound_hdr hdr = {
2571 .nops = 0,
2572 };
2573
2574 encode_compound_hdr(xdr, req, &hdr);
2575 encode_renew(xdr, clp->cl_clientid, &hdr);
2576 encode_nops(&hdr);
2577 }
2578
2579 /*
2580 * a SETCLIENTID request
2581 */
2582 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2583 struct xdr_stream *xdr,
2584 struct nfs4_setclientid *sc)
2585 {
2586 struct compound_hdr hdr = {
2587 .nops = 0,
2588 };
2589
2590 encode_compound_hdr(xdr, req, &hdr);
2591 encode_setclientid(xdr, sc, &hdr);
2592 encode_nops(&hdr);
2593 }
2594
2595 /*
2596 * a SETCLIENTID_CONFIRM request
2597 */
2598 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2599 struct xdr_stream *xdr,
2600 struct nfs4_setclientid_res *arg)
2601 {
2602 struct compound_hdr hdr = {
2603 .nops = 0,
2604 };
2605 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2606
2607 encode_compound_hdr(xdr, req, &hdr);
2608 encode_setclientid_confirm(xdr, arg, &hdr);
2609 encode_putrootfh(xdr, &hdr);
2610 encode_fsinfo(xdr, lease_bitmap, &hdr);
2611 encode_nops(&hdr);
2612 }
2613
2614 /*
2615 * DELEGRETURN request
2616 */
2617 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2618 struct xdr_stream *xdr,
2619 const struct nfs4_delegreturnargs *args)
2620 {
2621 struct compound_hdr hdr = {
2622 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2623 };
2624
2625 encode_compound_hdr(xdr, req, &hdr);
2626 encode_sequence(xdr, &args->seq_args, &hdr);
2627 encode_putfh(xdr, args->fhandle, &hdr);
2628 encode_getfattr(xdr, args->bitmask, &hdr);
2629 encode_delegreturn(xdr, args->stateid, &hdr);
2630 encode_nops(&hdr);
2631 }
2632
2633 /*
2634 * Encode FS_LOCATIONS request
2635 */
2636 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2637 struct xdr_stream *xdr,
2638 struct nfs4_fs_locations_arg *args)
2639 {
2640 struct compound_hdr hdr = {
2641 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2642 };
2643 uint32_t replen;
2644
2645 encode_compound_hdr(xdr, req, &hdr);
2646 encode_sequence(xdr, &args->seq_args, &hdr);
2647 encode_putfh(xdr, args->dir_fh, &hdr);
2648 encode_lookup(xdr, args->name, &hdr);
2649 replen = hdr.replen; /* get the attribute into args->page */
2650 encode_fs_locations(xdr, args->bitmask, &hdr);
2651
2652 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2653 0, PAGE_SIZE);
2654 encode_nops(&hdr);
2655 }
2656
2657 /*
2658 * Encode SECINFO request
2659 */
2660 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2661 struct xdr_stream *xdr,
2662 struct nfs4_secinfo_arg *args)
2663 {
2664 struct compound_hdr hdr = {
2665 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2666 };
2667
2668 encode_compound_hdr(xdr, req, &hdr);
2669 encode_sequence(xdr, &args->seq_args, &hdr);
2670 encode_putfh(xdr, args->dir_fh, &hdr);
2671 encode_secinfo(xdr, args->name, &hdr);
2672 encode_nops(&hdr);
2673 }
2674
2675 #if defined(CONFIG_NFS_V4_1)
2676 /*
2677 * BIND_CONN_TO_SESSION request
2678 */
2679 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2680 struct xdr_stream *xdr,
2681 struct nfs_client *clp)
2682 {
2683 struct compound_hdr hdr = {
2684 .minorversion = clp->cl_mvops->minor_version,
2685 };
2686
2687 encode_compound_hdr(xdr, req, &hdr);
2688 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2689 encode_nops(&hdr);
2690 }
2691
2692 /*
2693 * EXCHANGE_ID request
2694 */
2695 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2696 struct xdr_stream *xdr,
2697 struct nfs41_exchange_id_args *args)
2698 {
2699 struct compound_hdr hdr = {
2700 .minorversion = args->client->cl_mvops->minor_version,
2701 };
2702
2703 encode_compound_hdr(xdr, req, &hdr);
2704 encode_exchange_id(xdr, args, &hdr);
2705 encode_nops(&hdr);
2706 }
2707
2708 /*
2709 * a CREATE_SESSION request
2710 */
2711 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2712 struct xdr_stream *xdr,
2713 struct nfs41_create_session_args *args)
2714 {
2715 struct compound_hdr hdr = {
2716 .minorversion = args->client->cl_mvops->minor_version,
2717 };
2718
2719 encode_compound_hdr(xdr, req, &hdr);
2720 encode_create_session(xdr, args, &hdr);
2721 encode_nops(&hdr);
2722 }
2723
2724 /*
2725 * a DESTROY_SESSION request
2726 */
2727 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2728 struct xdr_stream *xdr,
2729 struct nfs4_session *session)
2730 {
2731 struct compound_hdr hdr = {
2732 .minorversion = session->clp->cl_mvops->minor_version,
2733 };
2734
2735 encode_compound_hdr(xdr, req, &hdr);
2736 encode_destroy_session(xdr, session, &hdr);
2737 encode_nops(&hdr);
2738 }
2739
2740 /*
2741 * a DESTROY_CLIENTID request
2742 */
2743 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2744 struct xdr_stream *xdr,
2745 struct nfs_client *clp)
2746 {
2747 struct compound_hdr hdr = {
2748 .minorversion = clp->cl_mvops->minor_version,
2749 };
2750
2751 encode_compound_hdr(xdr, req, &hdr);
2752 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2753 encode_nops(&hdr);
2754 }
2755
2756 /*
2757 * a SEQUENCE request
2758 */
2759 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2760 struct nfs4_sequence_args *args)
2761 {
2762 struct compound_hdr hdr = {
2763 .minorversion = nfs4_xdr_minorversion(args),
2764 };
2765
2766 encode_compound_hdr(xdr, req, &hdr);
2767 encode_sequence(xdr, args, &hdr);
2768 encode_nops(&hdr);
2769 }
2770
2771 /*
2772 * a GET_LEASE_TIME request
2773 */
2774 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2775 struct xdr_stream *xdr,
2776 struct nfs4_get_lease_time_args *args)
2777 {
2778 struct compound_hdr hdr = {
2779 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2780 };
2781 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2782
2783 encode_compound_hdr(xdr, req, &hdr);
2784 encode_sequence(xdr, &args->la_seq_args, &hdr);
2785 encode_putrootfh(xdr, &hdr);
2786 encode_fsinfo(xdr, lease_bitmap, &hdr);
2787 encode_nops(&hdr);
2788 }
2789
2790 /*
2791 * a RECLAIM_COMPLETE request
2792 */
2793 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2794 struct xdr_stream *xdr,
2795 struct nfs41_reclaim_complete_args *args)
2796 {
2797 struct compound_hdr hdr = {
2798 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2799 };
2800
2801 encode_compound_hdr(xdr, req, &hdr);
2802 encode_sequence(xdr, &args->seq_args, &hdr);
2803 encode_reclaim_complete(xdr, args, &hdr);
2804 encode_nops(&hdr);
2805 }
2806
2807 /*
2808 * Encode GETDEVICELIST request
2809 */
2810 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2811 struct xdr_stream *xdr,
2812 struct nfs4_getdevicelist_args *args)
2813 {
2814 struct compound_hdr hdr = {
2815 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2816 };
2817
2818 encode_compound_hdr(xdr, req, &hdr);
2819 encode_sequence(xdr, &args->seq_args, &hdr);
2820 encode_putfh(xdr, args->fh, &hdr);
2821 encode_getdevicelist(xdr, args, &hdr);
2822 encode_nops(&hdr);
2823 }
2824
2825 /*
2826 * Encode GETDEVICEINFO request
2827 */
2828 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2829 struct xdr_stream *xdr,
2830 struct nfs4_getdeviceinfo_args *args)
2831 {
2832 struct compound_hdr hdr = {
2833 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2834 };
2835
2836 encode_compound_hdr(xdr, req, &hdr);
2837 encode_sequence(xdr, &args->seq_args, &hdr);
2838 encode_getdeviceinfo(xdr, args, &hdr);
2839
2840 /* set up reply kvec. Subtract notification bitmap max size (2)
2841 * so that notification bitmap is put in xdr_buf tail */
2842 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2843 args->pdev->pages, args->pdev->pgbase,
2844 args->pdev->pglen);
2845
2846 encode_nops(&hdr);
2847 }
2848
2849 /*
2850 * Encode LAYOUTGET request
2851 */
2852 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2853 struct xdr_stream *xdr,
2854 struct nfs4_layoutget_args *args)
2855 {
2856 struct compound_hdr hdr = {
2857 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2858 };
2859
2860 encode_compound_hdr(xdr, req, &hdr);
2861 encode_sequence(xdr, &args->seq_args, &hdr);
2862 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2863 encode_layoutget(xdr, args, &hdr);
2864
2865 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2866 args->layout.pages, 0, args->layout.pglen);
2867
2868 encode_nops(&hdr);
2869 }
2870
2871 /*
2872 * Encode LAYOUTCOMMIT request
2873 */
2874 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2875 struct xdr_stream *xdr,
2876 struct nfs4_layoutcommit_args *args)
2877 {
2878 struct nfs4_layoutcommit_data *data =
2879 container_of(args, struct nfs4_layoutcommit_data, args);
2880 struct compound_hdr hdr = {
2881 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2882 };
2883
2884 encode_compound_hdr(xdr, req, &hdr);
2885 encode_sequence(xdr, &args->seq_args, &hdr);
2886 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2887 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2888 encode_getfattr(xdr, args->bitmask, &hdr);
2889 encode_nops(&hdr);
2890 }
2891
2892 /*
2893 * Encode LAYOUTRETURN request
2894 */
2895 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2896 struct xdr_stream *xdr,
2897 struct nfs4_layoutreturn_args *args)
2898 {
2899 struct compound_hdr hdr = {
2900 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2901 };
2902
2903 encode_compound_hdr(xdr, req, &hdr);
2904 encode_sequence(xdr, &args->seq_args, &hdr);
2905 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2906 encode_layoutreturn(xdr, args, &hdr);
2907 encode_nops(&hdr);
2908 }
2909
2910 /*
2911 * Encode SECINFO_NO_NAME request
2912 */
2913 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2914 struct xdr_stream *xdr,
2915 struct nfs41_secinfo_no_name_args *args)
2916 {
2917 struct compound_hdr hdr = {
2918 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2919 };
2920
2921 encode_compound_hdr(xdr, req, &hdr);
2922 encode_sequence(xdr, &args->seq_args, &hdr);
2923 encode_putrootfh(xdr, &hdr);
2924 encode_secinfo_no_name(xdr, args, &hdr);
2925 encode_nops(&hdr);
2926 return 0;
2927 }
2928
2929 /*
2930 * Encode TEST_STATEID request
2931 */
2932 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2933 struct xdr_stream *xdr,
2934 struct nfs41_test_stateid_args *args)
2935 {
2936 struct compound_hdr hdr = {
2937 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2938 };
2939
2940 encode_compound_hdr(xdr, req, &hdr);
2941 encode_sequence(xdr, &args->seq_args, &hdr);
2942 encode_test_stateid(xdr, args, &hdr);
2943 encode_nops(&hdr);
2944 }
2945
2946 /*
2947 * Encode FREE_STATEID request
2948 */
2949 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2950 struct xdr_stream *xdr,
2951 struct nfs41_free_stateid_args *args)
2952 {
2953 struct compound_hdr hdr = {
2954 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2955 };
2956
2957 encode_compound_hdr(xdr, req, &hdr);
2958 encode_sequence(xdr, &args->seq_args, &hdr);
2959 encode_free_stateid(xdr, args, &hdr);
2960 encode_nops(&hdr);
2961 }
2962 #endif /* CONFIG_NFS_V4_1 */
2963
2964 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2965 {
2966 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2967 "Remaining buffer length is %tu words.\n",
2968 func, xdr->end - xdr->p);
2969 }
2970
2971 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2972 {
2973 __be32 *p;
2974
2975 p = xdr_inline_decode(xdr, 4);
2976 if (unlikely(!p))
2977 goto out_overflow;
2978 *len = be32_to_cpup(p);
2979 p = xdr_inline_decode(xdr, *len);
2980 if (unlikely(!p))
2981 goto out_overflow;
2982 *string = (char *)p;
2983 return 0;
2984 out_overflow:
2985 print_overflow_msg(__func__, xdr);
2986 return -EIO;
2987 }
2988
2989 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2990 {
2991 __be32 *p;
2992
2993 p = xdr_inline_decode(xdr, 8);
2994 if (unlikely(!p))
2995 goto out_overflow;
2996 hdr->status = be32_to_cpup(p++);
2997 hdr->taglen = be32_to_cpup(p);
2998
2999 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3000 if (unlikely(!p))
3001 goto out_overflow;
3002 hdr->tag = (char *)p;
3003 p += XDR_QUADLEN(hdr->taglen);
3004 hdr->nops = be32_to_cpup(p);
3005 if (unlikely(hdr->nops < 1))
3006 return nfs4_stat_to_errno(hdr->status);
3007 return 0;
3008 out_overflow:
3009 print_overflow_msg(__func__, xdr);
3010 return -EIO;
3011 }
3012
3013 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3014 {
3015 __be32 *p;
3016 uint32_t opnum;
3017 int32_t nfserr;
3018
3019 p = xdr_inline_decode(xdr, 8);
3020 if (unlikely(!p))
3021 goto out_overflow;
3022 opnum = be32_to_cpup(p++);
3023 if (opnum != expected) {
3024 dprintk("nfs: Server returned operation"
3025 " %d but we issued a request for %d\n",
3026 opnum, expected);
3027 return -EIO;
3028 }
3029 nfserr = be32_to_cpup(p);
3030 if (nfserr != NFS_OK)
3031 return nfs4_stat_to_errno(nfserr);
3032 return 0;
3033 out_overflow:
3034 print_overflow_msg(__func__, xdr);
3035 return -EIO;
3036 }
3037
3038 /* Dummy routine */
3039 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3040 {
3041 __be32 *p;
3042 unsigned int strlen;
3043 char *str;
3044
3045 p = xdr_inline_decode(xdr, 12);
3046 if (likely(p))
3047 return decode_opaque_inline(xdr, &strlen, &str);
3048 print_overflow_msg(__func__, xdr);
3049 return -EIO;
3050 }
3051
3052 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3053 {
3054 uint32_t bmlen;
3055 __be32 *p;
3056
3057 p = xdr_inline_decode(xdr, 4);
3058 if (unlikely(!p))
3059 goto out_overflow;
3060 bmlen = be32_to_cpup(p);
3061
3062 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3063 p = xdr_inline_decode(xdr, (bmlen << 2));
3064 if (unlikely(!p))
3065 goto out_overflow;
3066 if (bmlen > 0) {
3067 bitmap[0] = be32_to_cpup(p++);
3068 if (bmlen > 1) {
3069 bitmap[1] = be32_to_cpup(p++);
3070 if (bmlen > 2)
3071 bitmap[2] = be32_to_cpup(p);
3072 }
3073 }
3074 return 0;
3075 out_overflow:
3076 print_overflow_msg(__func__, xdr);
3077 return -EIO;
3078 }
3079
3080 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
3081 {
3082 __be32 *p;
3083
3084 p = xdr_inline_decode(xdr, 4);
3085 if (unlikely(!p))
3086 goto out_overflow;
3087 *attrlen = be32_to_cpup(p);
3088 *savep = xdr->p;
3089 return 0;
3090 out_overflow:
3091 print_overflow_msg(__func__, xdr);
3092 return -EIO;
3093 }
3094
3095 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3096 {
3097 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3098 int ret;
3099 ret = decode_attr_bitmap(xdr, bitmask);
3100 if (unlikely(ret < 0))
3101 return ret;
3102 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3103 } else
3104 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3105 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3106 bitmask[0], bitmask[1], bitmask[2]);
3107 return 0;
3108 }
3109
3110 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3111 {
3112 __be32 *p;
3113 int ret = 0;
3114
3115 *type = 0;
3116 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3117 return -EIO;
3118 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3119 p = xdr_inline_decode(xdr, 4);
3120 if (unlikely(!p))
3121 goto out_overflow;
3122 *type = be32_to_cpup(p);
3123 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3124 dprintk("%s: bad type %d\n", __func__, *type);
3125 return -EIO;
3126 }
3127 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3128 ret = NFS_ATTR_FATTR_TYPE;
3129 }
3130 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3131 return ret;
3132 out_overflow:
3133 print_overflow_msg(__func__, xdr);
3134 return -EIO;
3135 }
3136
3137 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3138 uint32_t *bitmap, uint32_t *type)
3139 {
3140 __be32 *p;
3141
3142 *type = 0;
3143 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3144 return -EIO;
3145 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3146 p = xdr_inline_decode(xdr, 4);
3147 if (unlikely(!p))
3148 goto out_overflow;
3149 *type = be32_to_cpup(p);
3150 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3151 }
3152 dprintk("%s: expire type=0x%x\n", __func__, *type);
3153 return 0;
3154 out_overflow:
3155 print_overflow_msg(__func__, xdr);
3156 return -EIO;
3157 }
3158
3159 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3160 {
3161 __be32 *p;
3162 int ret = 0;
3163
3164 *change = 0;
3165 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3166 return -EIO;
3167 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3168 p = xdr_inline_decode(xdr, 8);
3169 if (unlikely(!p))
3170 goto out_overflow;
3171 xdr_decode_hyper(p, change);
3172 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3173 ret = NFS_ATTR_FATTR_CHANGE;
3174 }
3175 dprintk("%s: change attribute=%Lu\n", __func__,
3176 (unsigned long long)*change);
3177 return ret;
3178 out_overflow:
3179 print_overflow_msg(__func__, xdr);
3180 return -EIO;
3181 }
3182
3183 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3184 {
3185 __be32 *p;
3186 int ret = 0;
3187
3188 *size = 0;
3189 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3190 return -EIO;
3191 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3192 p = xdr_inline_decode(xdr, 8);
3193 if (unlikely(!p))
3194 goto out_overflow;
3195 xdr_decode_hyper(p, size);
3196 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3197 ret = NFS_ATTR_FATTR_SIZE;
3198 }
3199 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3200 return ret;
3201 out_overflow:
3202 print_overflow_msg(__func__, xdr);
3203 return -EIO;
3204 }
3205
3206 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3207 {
3208 __be32 *p;
3209
3210 *res = 0;
3211 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3212 return -EIO;
3213 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3214 p = xdr_inline_decode(xdr, 4);
3215 if (unlikely(!p))
3216 goto out_overflow;
3217 *res = be32_to_cpup(p);
3218 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3219 }
3220 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3221 return 0;
3222 out_overflow:
3223 print_overflow_msg(__func__, xdr);
3224 return -EIO;
3225 }
3226
3227 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3228 {
3229 __be32 *p;
3230
3231 *res = 0;
3232 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3233 return -EIO;
3234 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3235 p = xdr_inline_decode(xdr, 4);
3236 if (unlikely(!p))
3237 goto out_overflow;
3238 *res = be32_to_cpup(p);
3239 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3240 }
3241 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3242 return 0;
3243 out_overflow:
3244 print_overflow_msg(__func__, xdr);
3245 return -EIO;
3246 }
3247
3248 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3249 {
3250 __be32 *p;
3251 int ret = 0;
3252
3253 fsid->major = 0;
3254 fsid->minor = 0;
3255 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3256 return -EIO;
3257 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3258 p = xdr_inline_decode(xdr, 16);
3259 if (unlikely(!p))
3260 goto out_overflow;
3261 p = xdr_decode_hyper(p, &fsid->major);
3262 xdr_decode_hyper(p, &fsid->minor);
3263 bitmap[0] &= ~FATTR4_WORD0_FSID;
3264 ret = NFS_ATTR_FATTR_FSID;
3265 }
3266 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3267 (unsigned long long)fsid->major,
3268 (unsigned long long)fsid->minor);
3269 return ret;
3270 out_overflow:
3271 print_overflow_msg(__func__, xdr);
3272 return -EIO;
3273 }
3274
3275 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3276 {
3277 __be32 *p;
3278
3279 *res = 60;
3280 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3281 return -EIO;
3282 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3283 p = xdr_inline_decode(xdr, 4);
3284 if (unlikely(!p))
3285 goto out_overflow;
3286 *res = be32_to_cpup(p);
3287 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3288 }
3289 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3290 return 0;
3291 out_overflow:
3292 print_overflow_msg(__func__, xdr);
3293 return -EIO;
3294 }
3295
3296 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3297 {
3298 __be32 *p;
3299
3300 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3301 return -EIO;
3302 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3303 p = xdr_inline_decode(xdr, 4);
3304 if (unlikely(!p))
3305 goto out_overflow;
3306 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3307 *res = -be32_to_cpup(p);
3308 }
3309 return 0;
3310 out_overflow:
3311 print_overflow_msg(__func__, xdr);
3312 return -EIO;
3313 }
3314
3315 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3316 {
3317 __be32 *p;
3318 int len;
3319
3320 if (fh != NULL)
3321 memset(fh, 0, sizeof(*fh));
3322
3323 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3324 return -EIO;
3325 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3326 p = xdr_inline_decode(xdr, 4);
3327 if (unlikely(!p))
3328 goto out_overflow;
3329 len = be32_to_cpup(p);
3330 if (len > NFS4_FHSIZE)
3331 return -EIO;
3332 p = xdr_inline_decode(xdr, len);
3333 if (unlikely(!p))
3334 goto out_overflow;
3335 if (fh != NULL) {
3336 memcpy(fh->data, p, len);
3337 fh->size = len;
3338 }
3339 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3340 }
3341 return 0;
3342 out_overflow:
3343 print_overflow_msg(__func__, xdr);
3344 return -EIO;
3345 }
3346
3347 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3348 {
3349 __be32 *p;
3350
3351 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3352 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3353 return -EIO;
3354 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3355 p = xdr_inline_decode(xdr, 4);
3356 if (unlikely(!p))
3357 goto out_overflow;
3358 *res = be32_to_cpup(p);
3359 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3360 }
3361 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3362 return 0;
3363 out_overflow:
3364 print_overflow_msg(__func__, xdr);
3365 return -EIO;
3366 }
3367
3368 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3369 {
3370 __be32 *p;
3371 int ret = 0;
3372
3373 *fileid = 0;
3374 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3375 return -EIO;
3376 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3377 p = xdr_inline_decode(xdr, 8);
3378 if (unlikely(!p))
3379 goto out_overflow;
3380 xdr_decode_hyper(p, fileid);
3381 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3382 ret = NFS_ATTR_FATTR_FILEID;
3383 }
3384 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3385 return ret;
3386 out_overflow:
3387 print_overflow_msg(__func__, xdr);
3388 return -EIO;
3389 }
3390
3391 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3392 {
3393 __be32 *p;
3394 int ret = 0;
3395
3396 *fileid = 0;
3397 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3398 return -EIO;
3399 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3400 p = xdr_inline_decode(xdr, 8);
3401 if (unlikely(!p))
3402 goto out_overflow;
3403 xdr_decode_hyper(p, fileid);
3404 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3405 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3406 }
3407 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3408 return ret;
3409 out_overflow:
3410 print_overflow_msg(__func__, xdr);
3411 return -EIO;
3412 }
3413
3414 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3415 {
3416 __be32 *p;
3417 int status = 0;
3418
3419 *res = 0;
3420 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3421 return -EIO;
3422 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3423 p = xdr_inline_decode(xdr, 8);
3424 if (unlikely(!p))
3425 goto out_overflow;
3426 xdr_decode_hyper(p, res);
3427 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3428 }
3429 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3430 return status;
3431 out_overflow:
3432 print_overflow_msg(__func__, xdr);
3433 return -EIO;
3434 }
3435
3436 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3437 {
3438 __be32 *p;
3439 int status = 0;
3440
3441 *res = 0;
3442 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3443 return -EIO;
3444 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3445 p = xdr_inline_decode(xdr, 8);
3446 if (unlikely(!p))
3447 goto out_overflow;
3448 xdr_decode_hyper(p, res);
3449 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3450 }
3451 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3452 return status;
3453 out_overflow:
3454 print_overflow_msg(__func__, xdr);
3455 return -EIO;
3456 }
3457
3458 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3459 {
3460 __be32 *p;
3461 int status = 0;
3462
3463 *res = 0;
3464 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3465 return -EIO;
3466 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3467 p = xdr_inline_decode(xdr, 8);
3468 if (unlikely(!p))
3469 goto out_overflow;
3470 xdr_decode_hyper(p, res);
3471 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3472 }
3473 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3474 return status;
3475 out_overflow:
3476 print_overflow_msg(__func__, xdr);
3477 return -EIO;
3478 }
3479
3480 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3481 {
3482 u32 n;
3483 __be32 *p;
3484 int status = 0;
3485
3486 p = xdr_inline_decode(xdr, 4);
3487 if (unlikely(!p))
3488 goto out_overflow;
3489 n = be32_to_cpup(p);
3490 if (n == 0)
3491 goto root_path;
3492 dprintk("pathname4: ");
3493 path->ncomponents = 0;
3494 while (path->ncomponents < n) {
3495 struct nfs4_string *component = &path->components[path->ncomponents];
3496 status = decode_opaque_inline(xdr, &component->len, &component->data);
3497 if (unlikely(status != 0))
3498 goto out_eio;
3499 ifdebug (XDR)
3500 pr_cont("%s%.*s ",
3501 (path->ncomponents != n ? "/ " : ""),
3502 component->len, component->data);
3503 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3504 path->ncomponents++;
3505 else {
3506 dprintk("cannot parse %d components in path\n", n);
3507 goto out_eio;
3508 }
3509 }
3510 out:
3511 return status;
3512 root_path:
3513 /* a root pathname is sent as a zero component4 */
3514 path->ncomponents = 1;
3515 path->components[0].len=0;
3516 path->components[0].data=NULL;
3517 dprintk("pathname4: /\n");
3518 goto out;
3519 out_eio:
3520 dprintk(" status %d", status);
3521 status = -EIO;
3522 goto out;
3523 out_overflow:
3524 print_overflow_msg(__func__, xdr);
3525 return -EIO;
3526 }
3527
3528 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3529 {
3530 int n;
3531 __be32 *p;
3532 int status = -EIO;
3533
3534 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3535 goto out;
3536 status = 0;
3537 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3538 goto out;
3539 status = -EIO;
3540 /* Ignore borken servers that return unrequested attrs */
3541 if (unlikely(res == NULL))
3542 goto out;
3543 dprintk("%s: fsroot:\n", __func__);
3544 status = decode_pathname(xdr, &res->fs_path);
3545 if (unlikely(status != 0))
3546 goto out;
3547 p = xdr_inline_decode(xdr, 4);
3548 if (unlikely(!p))
3549 goto out_overflow;
3550 n = be32_to_cpup(p);
3551 if (n <= 0)
3552 goto out_eio;
3553 res->nlocations = 0;
3554 while (res->nlocations < n) {
3555 u32 m;
3556 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3557
3558 p = xdr_inline_decode(xdr, 4);
3559 if (unlikely(!p))
3560 goto out_overflow;
3561 m = be32_to_cpup(p);
3562
3563 loc->nservers = 0;
3564 dprintk("%s: servers:\n", __func__);
3565 while (loc->nservers < m) {
3566 struct nfs4_string *server = &loc->servers[loc->nservers];
3567 status = decode_opaque_inline(xdr, &server->len, &server->data);
3568 if (unlikely(status != 0))
3569 goto out_eio;
3570 dprintk("%s ", server->data);
3571 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3572 loc->nservers++;
3573 else {
3574 unsigned int i;
3575 dprintk("%s: using first %u of %u servers "
3576 "returned for location %u\n",
3577 __func__,
3578 NFS4_FS_LOCATION_MAXSERVERS,
3579 m, res->nlocations);
3580 for (i = loc->nservers; i < m; i++) {
3581 unsigned int len;
3582 char *data;
3583 status = decode_opaque_inline(xdr, &len, &data);
3584 if (unlikely(status != 0))
3585 goto out_eio;
3586 }
3587 }
3588 }
3589 status = decode_pathname(xdr, &loc->rootpath);
3590 if (unlikely(status != 0))
3591 goto out_eio;
3592 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3593 res->nlocations++;
3594 }
3595 if (res->nlocations != 0)
3596 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3597 out:
3598 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3599 return status;
3600 out_overflow:
3601 print_overflow_msg(__func__, xdr);
3602 out_eio:
3603 status = -EIO;
3604 goto out;
3605 }
3606
3607 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3608 {
3609 __be32 *p;
3610 int status = 0;
3611
3612 *res = 0;
3613 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3614 return -EIO;
3615 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3616 p = xdr_inline_decode(xdr, 8);
3617 if (unlikely(!p))
3618 goto out_overflow;
3619 xdr_decode_hyper(p, res);
3620 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3621 }
3622 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3623 return status;
3624 out_overflow:
3625 print_overflow_msg(__func__, xdr);
3626 return -EIO;
3627 }
3628
3629 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3630 {
3631 __be32 *p;
3632 int status = 0;
3633
3634 *maxlink = 1;
3635 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3636 return -EIO;
3637 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3638 p = xdr_inline_decode(xdr, 4);
3639 if (unlikely(!p))
3640 goto out_overflow;
3641 *maxlink = be32_to_cpup(p);
3642 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3643 }
3644 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3645 return status;
3646 out_overflow:
3647 print_overflow_msg(__func__, xdr);
3648 return -EIO;
3649 }
3650
3651 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3652 {
3653 __be32 *p;
3654 int status = 0;
3655
3656 *maxname = 1024;
3657 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3658 return -EIO;
3659 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3660 p = xdr_inline_decode(xdr, 4);
3661 if (unlikely(!p))
3662 goto out_overflow;
3663 *maxname = be32_to_cpup(p);
3664 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3665 }
3666 dprintk("%s: maxname=%u\n", __func__, *maxname);
3667 return status;
3668 out_overflow:
3669 print_overflow_msg(__func__, xdr);
3670 return -EIO;
3671 }
3672
3673 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3674 {
3675 __be32 *p;
3676 int status = 0;
3677
3678 *res = 1024;
3679 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3680 return -EIO;
3681 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3682 uint64_t maxread;
3683 p = xdr_inline_decode(xdr, 8);
3684 if (unlikely(!p))
3685 goto out_overflow;
3686 xdr_decode_hyper(p, &maxread);
3687 if (maxread > 0x7FFFFFFF)
3688 maxread = 0x7FFFFFFF;
3689 *res = (uint32_t)maxread;
3690 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3691 }
3692 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3693 return status;
3694 out_overflow:
3695 print_overflow_msg(__func__, xdr);
3696 return -EIO;
3697 }
3698
3699 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3700 {
3701 __be32 *p;
3702 int status = 0;
3703
3704 *res = 1024;
3705 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3706 return -EIO;
3707 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3708 uint64_t maxwrite;
3709 p = xdr_inline_decode(xdr, 8);
3710 if (unlikely(!p))
3711 goto out_overflow;
3712 xdr_decode_hyper(p, &maxwrite);
3713 if (maxwrite > 0x7FFFFFFF)
3714 maxwrite = 0x7FFFFFFF;
3715 *res = (uint32_t)maxwrite;
3716 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3717 }
3718 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3719 return status;
3720 out_overflow:
3721 print_overflow_msg(__func__, xdr);
3722 return -EIO;
3723 }
3724
3725 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3726 {
3727 uint32_t tmp;
3728 __be32 *p;
3729 int ret = 0;
3730
3731 *mode = 0;
3732 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3733 return -EIO;
3734 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3735 p = xdr_inline_decode(xdr, 4);
3736 if (unlikely(!p))
3737 goto out_overflow;
3738 tmp = be32_to_cpup(p);
3739 *mode = tmp & ~S_IFMT;
3740 bitmap[1] &= ~FATTR4_WORD1_MODE;
3741 ret = NFS_ATTR_FATTR_MODE;
3742 }
3743 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3744 return ret;
3745 out_overflow:
3746 print_overflow_msg(__func__, xdr);
3747 return -EIO;
3748 }
3749
3750 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3751 {
3752 __be32 *p;
3753 int ret = 0;
3754
3755 *nlink = 1;
3756 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3757 return -EIO;
3758 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3759 p = xdr_inline_decode(xdr, 4);
3760 if (unlikely(!p))
3761 goto out_overflow;
3762 *nlink = be32_to_cpup(p);
3763 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3764 ret = NFS_ATTR_FATTR_NLINK;
3765 }
3766 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3767 return ret;
3768 out_overflow:
3769 print_overflow_msg(__func__, xdr);
3770 return -EIO;
3771 }
3772
3773 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3774 const struct nfs_server *server, uint32_t *uid,
3775 struct nfs4_string *owner_name)
3776 {
3777 uint32_t len;
3778 __be32 *p;
3779 int ret = 0;
3780
3781 *uid = -2;
3782 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3783 return -EIO;
3784 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3785 p = xdr_inline_decode(xdr, 4);
3786 if (unlikely(!p))
3787 goto out_overflow;
3788 len = be32_to_cpup(p);
3789 p = xdr_inline_decode(xdr, len);
3790 if (unlikely(!p))
3791 goto out_overflow;
3792 if (owner_name != NULL) {
3793 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3794 if (owner_name->data != NULL) {
3795 owner_name->len = len;
3796 ret = NFS_ATTR_FATTR_OWNER_NAME;
3797 }
3798 } else if (len < XDR_MAX_NETOBJ) {
3799 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3800 ret = NFS_ATTR_FATTR_OWNER;
3801 else
3802 dprintk("%s: nfs_map_name_to_uid failed!\n",
3803 __func__);
3804 } else
3805 dprintk("%s: name too long (%u)!\n",
3806 __func__, len);
3807 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3808 }
3809 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3810 return ret;
3811 out_overflow:
3812 print_overflow_msg(__func__, xdr);
3813 return -EIO;
3814 }
3815
3816 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3817 const struct nfs_server *server, uint32_t *gid,
3818 struct nfs4_string *group_name)
3819 {
3820 uint32_t len;
3821 __be32 *p;
3822 int ret = 0;
3823
3824 *gid = -2;
3825 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3826 return -EIO;
3827 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3828 p = xdr_inline_decode(xdr, 4);
3829 if (unlikely(!p))
3830 goto out_overflow;
3831 len = be32_to_cpup(p);
3832 p = xdr_inline_decode(xdr, len);
3833 if (unlikely(!p))
3834 goto out_overflow;
3835 if (group_name != NULL) {
3836 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3837 if (group_name->data != NULL) {
3838 group_name->len = len;
3839 ret = NFS_ATTR_FATTR_GROUP_NAME;
3840 }
3841 } else if (len < XDR_MAX_NETOBJ) {
3842 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3843 ret = NFS_ATTR_FATTR_GROUP;
3844 else
3845 dprintk("%s: nfs_map_group_to_gid failed!\n",
3846 __func__);
3847 } else
3848 dprintk("%s: name too long (%u)!\n",
3849 __func__, len);
3850 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3851 }
3852 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3853 return ret;
3854 out_overflow:
3855 print_overflow_msg(__func__, xdr);
3856 return -EIO;
3857 }
3858
3859 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3860 {
3861 uint32_t major = 0, minor = 0;
3862 __be32 *p;
3863 int ret = 0;
3864
3865 *rdev = MKDEV(0,0);
3866 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3867 return -EIO;
3868 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3869 dev_t tmp;
3870
3871 p = xdr_inline_decode(xdr, 8);
3872 if (unlikely(!p))
3873 goto out_overflow;
3874 major = be32_to_cpup(p++);
3875 minor = be32_to_cpup(p);
3876 tmp = MKDEV(major, minor);
3877 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3878 *rdev = tmp;
3879 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3880 ret = NFS_ATTR_FATTR_RDEV;
3881 }
3882 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3883 return ret;
3884 out_overflow:
3885 print_overflow_msg(__func__, xdr);
3886 return -EIO;
3887 }
3888
3889 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3890 {
3891 __be32 *p;
3892 int status = 0;
3893
3894 *res = 0;
3895 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3896 return -EIO;
3897 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3898 p = xdr_inline_decode(xdr, 8);
3899 if (unlikely(!p))
3900 goto out_overflow;
3901 xdr_decode_hyper(p, res);
3902 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3903 }
3904 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3905 return status;
3906 out_overflow:
3907 print_overflow_msg(__func__, xdr);
3908 return -EIO;
3909 }
3910
3911 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3912 {
3913 __be32 *p;
3914 int status = 0;
3915
3916 *res = 0;
3917 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3918 return -EIO;
3919 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3920 p = xdr_inline_decode(xdr, 8);
3921 if (unlikely(!p))
3922 goto out_overflow;
3923 xdr_decode_hyper(p, res);
3924 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3925 }
3926 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3927 return status;
3928 out_overflow:
3929 print_overflow_msg(__func__, xdr);
3930 return -EIO;
3931 }
3932
3933 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3934 {
3935 __be32 *p;
3936 int status = 0;
3937
3938 *res = 0;
3939 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3940 return -EIO;
3941 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3942 p = xdr_inline_decode(xdr, 8);
3943 if (unlikely(!p))
3944 goto out_overflow;
3945 xdr_decode_hyper(p, res);
3946 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3947 }
3948 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3949 return status;
3950 out_overflow:
3951 print_overflow_msg(__func__, xdr);
3952 return -EIO;
3953 }
3954
3955 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3956 {
3957 __be32 *p;
3958 int ret = 0;
3959
3960 *used = 0;
3961 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3962 return -EIO;
3963 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3964 p = xdr_inline_decode(xdr, 8);
3965 if (unlikely(!p))
3966 goto out_overflow;
3967 xdr_decode_hyper(p, used);
3968 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3969 ret = NFS_ATTR_FATTR_SPACE_USED;
3970 }
3971 dprintk("%s: space used=%Lu\n", __func__,
3972 (unsigned long long)*used);
3973 return ret;
3974 out_overflow:
3975 print_overflow_msg(__func__, xdr);
3976 return -EIO;
3977 }
3978
3979 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3980 {
3981 __be32 *p;
3982 uint64_t sec;
3983 uint32_t nsec;
3984
3985 p = xdr_inline_decode(xdr, 12);
3986 if (unlikely(!p))
3987 goto out_overflow;
3988 p = xdr_decode_hyper(p, &sec);
3989 nsec = be32_to_cpup(p);
3990 time->tv_sec = (time_t)sec;
3991 time->tv_nsec = (long)nsec;
3992 return 0;
3993 out_overflow:
3994 print_overflow_msg(__func__, xdr);
3995 return -EIO;
3996 }
3997
3998 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3999 {
4000 int status = 0;
4001
4002 time->tv_sec = 0;
4003 time->tv_nsec = 0;
4004 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4005 return -EIO;
4006 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4007 status = decode_attr_time(xdr, time);
4008 if (status == 0)
4009 status = NFS_ATTR_FATTR_ATIME;
4010 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4011 }
4012 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4013 return status;
4014 }
4015
4016 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4017 {
4018 int status = 0;
4019
4020 time->tv_sec = 0;
4021 time->tv_nsec = 0;
4022 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4023 return -EIO;
4024 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4025 status = decode_attr_time(xdr, time);
4026 if (status == 0)
4027 status = NFS_ATTR_FATTR_CTIME;
4028 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4029 }
4030 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4031 return status;
4032 }
4033
4034 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4035 struct timespec *time)
4036 {
4037 int status = 0;
4038
4039 time->tv_sec = 0;
4040 time->tv_nsec = 0;
4041 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4042 return -EIO;
4043 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4044 status = decode_attr_time(xdr, time);
4045 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4046 }
4047 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4048 (long)time->tv_nsec);
4049 return status;
4050 }
4051
4052 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4053 {
4054 int status = 0;
4055
4056 time->tv_sec = 0;
4057 time->tv_nsec = 0;
4058 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4059 return -EIO;
4060 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4061 status = decode_attr_time(xdr, time);
4062 if (status == 0)
4063 status = NFS_ATTR_FATTR_MTIME;
4064 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4065 }
4066 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4067 return status;
4068 }
4069
4070 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
4071 {
4072 unsigned int attrwords = XDR_QUADLEN(attrlen);
4073 unsigned int nwords = xdr->p - savep;
4074
4075 if (unlikely(attrwords != nwords)) {
4076 dprintk("%s: server returned incorrect attribute length: "
4077 "%u %c %u\n",
4078 __func__,
4079 attrwords << 2,
4080 (attrwords < nwords) ? '<' : '>',
4081 nwords << 2);
4082 return -EIO;
4083 }
4084 return 0;
4085 }
4086
4087 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4088 {
4089 __be32 *p;
4090
4091 p = xdr_inline_decode(xdr, 20);
4092 if (unlikely(!p))
4093 goto out_overflow;
4094 cinfo->atomic = be32_to_cpup(p++);
4095 p = xdr_decode_hyper(p, &cinfo->before);
4096 xdr_decode_hyper(p, &cinfo->after);
4097 return 0;
4098 out_overflow:
4099 print_overflow_msg(__func__, xdr);
4100 return -EIO;
4101 }
4102
4103 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
4104 {
4105 __be32 *p;
4106 uint32_t supp, acc;
4107 int status;
4108
4109 status = decode_op_hdr(xdr, OP_ACCESS);
4110 if (status)
4111 return status;
4112 p = xdr_inline_decode(xdr, 8);
4113 if (unlikely(!p))
4114 goto out_overflow;
4115 supp = be32_to_cpup(p++);
4116 acc = be32_to_cpup(p);
4117 access->supported = supp;
4118 access->access = acc;
4119 return 0;
4120 out_overflow:
4121 print_overflow_msg(__func__, xdr);
4122 return -EIO;
4123 }
4124
4125 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4126 {
4127 __be32 *p;
4128
4129 p = xdr_inline_decode(xdr, len);
4130 if (likely(p)) {
4131 memcpy(buf, p, len);
4132 return 0;
4133 }
4134 print_overflow_msg(__func__, xdr);
4135 return -EIO;
4136 }
4137
4138 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4139 {
4140 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4141 }
4142
4143 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4144 {
4145 int status;
4146
4147 status = decode_op_hdr(xdr, OP_CLOSE);
4148 if (status != -EIO)
4149 nfs_increment_open_seqid(status, res->seqid);
4150 if (!status)
4151 status = decode_stateid(xdr, &res->stateid);
4152 return status;
4153 }
4154
4155 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4156 {
4157 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4158 }
4159
4160 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4161 {
4162 int status;
4163
4164 status = decode_op_hdr(xdr, OP_COMMIT);
4165 if (!status)
4166 status = decode_verifier(xdr, res->verf->verifier);
4167 return status;
4168 }
4169
4170 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4171 {
4172 __be32 *p;
4173 uint32_t bmlen;
4174 int status;
4175
4176 status = decode_op_hdr(xdr, OP_CREATE);
4177 if (status)
4178 return status;
4179 if ((status = decode_change_info(xdr, cinfo)))
4180 return status;
4181 p = xdr_inline_decode(xdr, 4);
4182 if (unlikely(!p))
4183 goto out_overflow;
4184 bmlen = be32_to_cpup(p);
4185 p = xdr_inline_decode(xdr, bmlen << 2);
4186 if (likely(p))
4187 return 0;
4188 out_overflow:
4189 print_overflow_msg(__func__, xdr);
4190 return -EIO;
4191 }
4192
4193 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4194 {
4195 __be32 *savep;
4196 uint32_t attrlen, bitmap[3] = {0};
4197 int status;
4198
4199 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4200 goto xdr_error;
4201 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4202 goto xdr_error;
4203 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4204 goto xdr_error;
4205 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4206 goto xdr_error;
4207 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4208 &res->fh_expire_type)) != 0)
4209 goto xdr_error;
4210 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4211 goto xdr_error;
4212 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4213 goto xdr_error;
4214 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4215 goto xdr_error;
4216 status = verify_attr_len(xdr, savep, attrlen);
4217 xdr_error:
4218 dprintk("%s: xdr returned %d!\n", __func__, -status);
4219 return status;
4220 }
4221
4222 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4223 {
4224 __be32 *savep;
4225 uint32_t attrlen, bitmap[3] = {0};
4226 int status;
4227
4228 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4229 goto xdr_error;
4230 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4231 goto xdr_error;
4232 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4233 goto xdr_error;
4234
4235 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4236 goto xdr_error;
4237 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4238 goto xdr_error;
4239 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4240 goto xdr_error;
4241 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4242 goto xdr_error;
4243 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4244 goto xdr_error;
4245 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4246 goto xdr_error;
4247
4248 status = verify_attr_len(xdr, savep, attrlen);
4249 xdr_error:
4250 dprintk("%s: xdr returned %d!\n", __func__, -status);
4251 return status;
4252 }
4253
4254 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4255 {
4256 __be32 *savep;
4257 uint32_t attrlen, bitmap[3] = {0};
4258 int status;
4259
4260 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4261 goto xdr_error;
4262 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4263 goto xdr_error;
4264 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4265 goto xdr_error;
4266
4267 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4268 goto xdr_error;
4269 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4270 goto xdr_error;
4271
4272 status = verify_attr_len(xdr, savep, attrlen);
4273 xdr_error:
4274 dprintk("%s: xdr returned %d!\n", __func__, -status);
4275 return status;
4276 }
4277
4278 static int decode_threshold_hint(struct xdr_stream *xdr,
4279 uint32_t *bitmap,
4280 uint64_t *res,
4281 uint32_t hint_bit)
4282 {
4283 __be32 *p;
4284
4285 *res = 0;
4286 if (likely(bitmap[0] & hint_bit)) {
4287 p = xdr_inline_decode(xdr, 8);
4288 if (unlikely(!p))
4289 goto out_overflow;
4290 xdr_decode_hyper(p, res);
4291 }
4292 return 0;
4293 out_overflow:
4294 print_overflow_msg(__func__, xdr);
4295 return -EIO;
4296 }
4297
4298 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4299 struct nfs4_threshold *res)
4300 {
4301 __be32 *p, *savep;
4302 uint32_t bitmap[3] = {0,}, attrlen;
4303 int status;
4304
4305 /* layout type */
4306 p = xdr_inline_decode(xdr, 4);
4307 if (unlikely(!p)) {
4308 print_overflow_msg(__func__, xdr);
4309 return -EIO;
4310 }
4311 res->l_type = be32_to_cpup(p);
4312
4313 /* thi_hintset bitmap */
4314 status = decode_attr_bitmap(xdr, bitmap);
4315 if (status < 0)
4316 goto xdr_error;
4317
4318 /* thi_hintlist length */
4319 status = decode_attr_length(xdr, &attrlen, &savep);
4320 if (status < 0)
4321 goto xdr_error;
4322 /* thi_hintlist */
4323 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4324 if (status < 0)
4325 goto xdr_error;
4326 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4327 if (status < 0)
4328 goto xdr_error;
4329 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4330 THRESHOLD_RD_IO);
4331 if (status < 0)
4332 goto xdr_error;
4333 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4334 THRESHOLD_WR_IO);
4335 if (status < 0)
4336 goto xdr_error;
4337
4338 status = verify_attr_len(xdr, savep, attrlen);
4339 res->bm = bitmap[0];
4340
4341 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4342 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4343 res->wr_io_sz);
4344 xdr_error:
4345 dprintk("%s ret=%d!\n", __func__, status);
4346 return status;
4347 }
4348
4349 /*
4350 * Thresholds on pNFS direct I/O vrs MDS I/O
4351 */
4352 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4353 uint32_t *bitmap,
4354 struct nfs4_threshold *res)
4355 {
4356 __be32 *p;
4357 int status = 0;
4358 uint32_t num;
4359
4360 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4361 return -EIO;
4362 if (likely(bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD)) {
4363 p = xdr_inline_decode(xdr, 4);
4364 if (unlikely(!p))
4365 goto out_overflow;
4366 num = be32_to_cpup(p);
4367 if (num == 0)
4368 return 0;
4369 if (num > 1)
4370 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4371 "drivers per filesystem not supported\n",
4372 __func__);
4373
4374 status = decode_first_threshold_item4(xdr, res);
4375 }
4376 return status;
4377 out_overflow:
4378 print_overflow_msg(__func__, xdr);
4379 return -EIO;
4380 }
4381
4382 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4383 struct nfs_fattr *fattr, struct nfs_fh *fh,
4384 struct nfs4_fs_locations *fs_loc,
4385 const struct nfs_server *server)
4386 {
4387 int status;
4388 umode_t fmode = 0;
4389 uint32_t type;
4390 int32_t err;
4391
4392 status = decode_attr_type(xdr, bitmap, &type);
4393 if (status < 0)
4394 goto xdr_error;
4395 fattr->mode = 0;
4396 if (status != 0) {
4397 fattr->mode |= nfs_type2fmt[type];
4398 fattr->valid |= status;
4399 }
4400
4401 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4402 if (status < 0)
4403 goto xdr_error;
4404 fattr->valid |= status;
4405
4406 status = decode_attr_size(xdr, bitmap, &fattr->size);
4407 if (status < 0)
4408 goto xdr_error;
4409 fattr->valid |= status;
4410
4411 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4412 if (status < 0)
4413 goto xdr_error;
4414 fattr->valid |= status;
4415
4416 err = 0;
4417 status = decode_attr_error(xdr, bitmap, &err);
4418 if (status < 0)
4419 goto xdr_error;
4420
4421 status = decode_attr_filehandle(xdr, bitmap, fh);
4422 if (status < 0)
4423 goto xdr_error;
4424
4425 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4426 if (status < 0)
4427 goto xdr_error;
4428 fattr->valid |= status;
4429
4430 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4431 if (status < 0)
4432 goto xdr_error;
4433 fattr->valid |= status;
4434
4435 status = decode_attr_mode(xdr, bitmap, &fmode);
4436 if (status < 0)
4437 goto xdr_error;
4438 if (status != 0) {
4439 fattr->mode |= fmode;
4440 fattr->valid |= status;
4441 }
4442
4443 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4444 if (status < 0)
4445 goto xdr_error;
4446 fattr->valid |= status;
4447
4448 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4449 if (status < 0)
4450 goto xdr_error;
4451 fattr->valid |= status;
4452
4453 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4454 if (status < 0)
4455 goto xdr_error;
4456 fattr->valid |= status;
4457
4458 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4459 if (status < 0)
4460 goto xdr_error;
4461 fattr->valid |= status;
4462
4463 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4464 if (status < 0)
4465 goto xdr_error;
4466 fattr->valid |= status;
4467
4468 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4469 if (status < 0)
4470 goto xdr_error;
4471 fattr->valid |= status;
4472
4473 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4474 if (status < 0)
4475 goto xdr_error;
4476 fattr->valid |= status;
4477
4478 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4479 if (status < 0)
4480 goto xdr_error;
4481 fattr->valid |= status;
4482
4483 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4484 if (status < 0)
4485 goto xdr_error;
4486 fattr->valid |= status;
4487
4488 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4489 if (status < 0)
4490 goto xdr_error;
4491
4492 xdr_error:
4493 dprintk("%s: xdr returned %d\n", __func__, -status);
4494 return status;
4495 }
4496
4497 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4498 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4499 const struct nfs_server *server)
4500 {
4501 __be32 *savep;
4502 uint32_t attrlen,
4503 bitmap[3] = {0};
4504 int status;
4505
4506 status = decode_op_hdr(xdr, OP_GETATTR);
4507 if (status < 0)
4508 goto xdr_error;
4509
4510 status = decode_attr_bitmap(xdr, bitmap);
4511 if (status < 0)
4512 goto xdr_error;
4513
4514 status = decode_attr_length(xdr, &attrlen, &savep);
4515 if (status < 0)
4516 goto xdr_error;
4517
4518 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4519 if (status < 0)
4520 goto xdr_error;
4521
4522 status = verify_attr_len(xdr, savep, attrlen);
4523 xdr_error:
4524 dprintk("%s: xdr returned %d\n", __func__, -status);
4525 return status;
4526 }
4527
4528 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4529 const struct nfs_server *server)
4530 {
4531 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4532 }
4533
4534 /*
4535 * Decode potentially multiple layout types. Currently we only support
4536 * one layout driver per file system.
4537 */
4538 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4539 uint32_t *layouttype)
4540 {
4541 uint32_t *p;
4542 int num;
4543
4544 p = xdr_inline_decode(xdr, 4);
4545 if (unlikely(!p))
4546 goto out_overflow;
4547 num = be32_to_cpup(p);
4548
4549 /* pNFS is not supported by the underlying file system */
4550 if (num == 0) {
4551 *layouttype = 0;
4552 return 0;
4553 }
4554 if (num > 1)
4555 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4556 "drivers per filesystem not supported\n", __func__);
4557
4558 /* Decode and set first layout type, move xdr->p past unused types */
4559 p = xdr_inline_decode(xdr, num * 4);
4560 if (unlikely(!p))
4561 goto out_overflow;
4562 *layouttype = be32_to_cpup(p);
4563 return 0;
4564 out_overflow:
4565 print_overflow_msg(__func__, xdr);
4566 return -EIO;
4567 }
4568
4569 /*
4570 * The type of file system exported.
4571 * Note we must ensure that layouttype is set in any non-error case.
4572 */
4573 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4574 uint32_t *layouttype)
4575 {
4576 int status = 0;
4577
4578 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4579 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4580 return -EIO;
4581 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4582 status = decode_first_pnfs_layout_type(xdr, layouttype);
4583 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4584 } else
4585 *layouttype = 0;
4586 return status;
4587 }
4588
4589 /*
4590 * The prefered block size for layout directed io
4591 */
4592 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4593 uint32_t *res)
4594 {
4595 __be32 *p;
4596
4597 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4598 *res = 0;
4599 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4600 p = xdr_inline_decode(xdr, 4);
4601 if (unlikely(!p)) {
4602 print_overflow_msg(__func__, xdr);
4603 return -EIO;
4604 }
4605 *res = be32_to_cpup(p);
4606 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4607 }
4608 return 0;
4609 }
4610
4611 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4612 {
4613 __be32 *savep;
4614 uint32_t attrlen, bitmap[3];
4615 int status;
4616
4617 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4618 goto xdr_error;
4619 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4620 goto xdr_error;
4621 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4622 goto xdr_error;
4623
4624 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4625
4626 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4627 goto xdr_error;
4628 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4629 goto xdr_error;
4630 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4631 goto xdr_error;
4632 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4633 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4634 goto xdr_error;
4635 fsinfo->wtpref = fsinfo->wtmax;
4636 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4637 if (status != 0)
4638 goto xdr_error;
4639 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4640 if (status != 0)
4641 goto xdr_error;
4642 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4643 if (status)
4644 goto xdr_error;
4645
4646 status = verify_attr_len(xdr, savep, attrlen);
4647 xdr_error:
4648 dprintk("%s: xdr returned %d!\n", __func__, -status);
4649 return status;
4650 }
4651
4652 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4653 {
4654 __be32 *p;
4655 uint32_t len;
4656 int status;
4657
4658 /* Zero handle first to allow comparisons */
4659 memset(fh, 0, sizeof(*fh));
4660
4661 status = decode_op_hdr(xdr, OP_GETFH);
4662 if (status)
4663 return status;
4664
4665 p = xdr_inline_decode(xdr, 4);
4666 if (unlikely(!p))
4667 goto out_overflow;
4668 len = be32_to_cpup(p);
4669 if (len > NFS4_FHSIZE)
4670 return -EIO;
4671 fh->size = len;
4672 p = xdr_inline_decode(xdr, len);
4673 if (unlikely(!p))
4674 goto out_overflow;
4675 memcpy(fh->data, p, len);
4676 return 0;
4677 out_overflow:
4678 print_overflow_msg(__func__, xdr);
4679 return -EIO;
4680 }
4681
4682 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4683 {
4684 int status;
4685
4686 status = decode_op_hdr(xdr, OP_LINK);
4687 if (status)
4688 return status;
4689 return decode_change_info(xdr, cinfo);
4690 }
4691
4692 /*
4693 * We create the owner, so we know a proper owner.id length is 4.
4694 */
4695 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4696 {
4697 uint64_t offset, length, clientid;
4698 __be32 *p;
4699 uint32_t namelen, type;
4700
4701 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4702 if (unlikely(!p))
4703 goto out_overflow;
4704 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4705 p = xdr_decode_hyper(p, &length);
4706 type = be32_to_cpup(p++); /* 4 byte read */
4707 if (fl != NULL) { /* manipulate file lock */
4708 fl->fl_start = (loff_t)offset;
4709 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4710 if (length == ~(uint64_t)0)
4711 fl->fl_end = OFFSET_MAX;
4712 fl->fl_type = F_WRLCK;
4713 if (type & 1)
4714 fl->fl_type = F_RDLCK;
4715 fl->fl_pid = 0;
4716 }
4717 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4718 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4719 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4720 if (likely(p))
4721 return -NFS4ERR_DENIED;
4722 out_overflow:
4723 print_overflow_msg(__func__, xdr);
4724 return -EIO;
4725 }
4726
4727 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4728 {
4729 int status;
4730
4731 status = decode_op_hdr(xdr, OP_LOCK);
4732 if (status == -EIO)
4733 goto out;
4734 if (status == 0) {
4735 status = decode_stateid(xdr, &res->stateid);
4736 if (unlikely(status))
4737 goto out;
4738 } else if (status == -NFS4ERR_DENIED)
4739 status = decode_lock_denied(xdr, NULL);
4740 if (res->open_seqid != NULL)
4741 nfs_increment_open_seqid(status, res->open_seqid);
4742 nfs_increment_lock_seqid(status, res->lock_seqid);
4743 out:
4744 return status;
4745 }
4746
4747 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4748 {
4749 int status;
4750 status = decode_op_hdr(xdr, OP_LOCKT);
4751 if (status == -NFS4ERR_DENIED)
4752 return decode_lock_denied(xdr, res->denied);
4753 return status;
4754 }
4755
4756 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4757 {
4758 int status;
4759
4760 status = decode_op_hdr(xdr, OP_LOCKU);
4761 if (status != -EIO)
4762 nfs_increment_lock_seqid(status, res->seqid);
4763 if (status == 0)
4764 status = decode_stateid(xdr, &res->stateid);
4765 return status;
4766 }
4767
4768 static int decode_release_lockowner(struct xdr_stream *xdr)
4769 {
4770 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4771 }
4772
4773 static int decode_lookup(struct xdr_stream *xdr)
4774 {
4775 return decode_op_hdr(xdr, OP_LOOKUP);
4776 }
4777
4778 /* This is too sick! */
4779 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4780 {
4781 __be32 *p;
4782 uint32_t limit_type, nblocks, blocksize;
4783
4784 p = xdr_inline_decode(xdr, 12);
4785 if (unlikely(!p))
4786 goto out_overflow;
4787 limit_type = be32_to_cpup(p++);
4788 switch (limit_type) {
4789 case 1:
4790 xdr_decode_hyper(p, maxsize);
4791 break;
4792 case 2:
4793 nblocks = be32_to_cpup(p++);
4794 blocksize = be32_to_cpup(p);
4795 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4796 }
4797 return 0;
4798 out_overflow:
4799 print_overflow_msg(__func__, xdr);
4800 return -EIO;
4801 }
4802
4803 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4804 {
4805 __be32 *p;
4806 uint32_t delegation_type;
4807 int status;
4808
4809 p = xdr_inline_decode(xdr, 4);
4810 if (unlikely(!p))
4811 goto out_overflow;
4812 delegation_type = be32_to_cpup(p);
4813 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4814 res->delegation_type = 0;
4815 return 0;
4816 }
4817 status = decode_stateid(xdr, &res->delegation);
4818 if (unlikely(status))
4819 return status;
4820 p = xdr_inline_decode(xdr, 4);
4821 if (unlikely(!p))
4822 goto out_overflow;
4823 res->do_recall = be32_to_cpup(p);
4824
4825 switch (delegation_type) {
4826 case NFS4_OPEN_DELEGATE_READ:
4827 res->delegation_type = FMODE_READ;
4828 break;
4829 case NFS4_OPEN_DELEGATE_WRITE:
4830 res->delegation_type = FMODE_WRITE|FMODE_READ;
4831 if (decode_space_limit(xdr, &res->maxsize) < 0)
4832 return -EIO;
4833 }
4834 return decode_ace(xdr, NULL, res->server->nfs_client);
4835 out_overflow:
4836 print_overflow_msg(__func__, xdr);
4837 return -EIO;
4838 }
4839
4840 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4841 {
4842 __be32 *p;
4843 uint32_t savewords, bmlen, i;
4844 int status;
4845
4846 status = decode_op_hdr(xdr, OP_OPEN);
4847 if (status != -EIO)
4848 nfs_increment_open_seqid(status, res->seqid);
4849 if (!status)
4850 status = decode_stateid(xdr, &res->stateid);
4851 if (unlikely(status))
4852 return status;
4853
4854 decode_change_info(xdr, &res->cinfo);
4855
4856 p = xdr_inline_decode(xdr, 8);
4857 if (unlikely(!p))
4858 goto out_overflow;
4859 res->rflags = be32_to_cpup(p++);
4860 bmlen = be32_to_cpup(p);
4861 if (bmlen > 10)
4862 goto xdr_error;
4863
4864 p = xdr_inline_decode(xdr, bmlen << 2);
4865 if (unlikely(!p))
4866 goto out_overflow;
4867 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4868 for (i = 0; i < savewords; ++i)
4869 res->attrset[i] = be32_to_cpup(p++);
4870 for (; i < NFS4_BITMAP_SIZE; i++)
4871 res->attrset[i] = 0;
4872
4873 return decode_delegation(xdr, res);
4874 xdr_error:
4875 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4876 return -EIO;
4877 out_overflow:
4878 print_overflow_msg(__func__, xdr);
4879 return -EIO;
4880 }
4881
4882 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4883 {
4884 int status;
4885
4886 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4887 if (status != -EIO)
4888 nfs_increment_open_seqid(status, res->seqid);
4889 if (!status)
4890 status = decode_stateid(xdr, &res->stateid);
4891 return status;
4892 }
4893
4894 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4895 {
4896 int status;
4897
4898 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4899 if (status != -EIO)
4900 nfs_increment_open_seqid(status, res->seqid);
4901 if (!status)
4902 status = decode_stateid(xdr, &res->stateid);
4903 return status;
4904 }
4905
4906 static int decode_putfh(struct xdr_stream *xdr)
4907 {
4908 return decode_op_hdr(xdr, OP_PUTFH);
4909 }
4910
4911 static int decode_putrootfh(struct xdr_stream *xdr)
4912 {
4913 return decode_op_hdr(xdr, OP_PUTROOTFH);
4914 }
4915
4916 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4917 {
4918 struct kvec *iov = req->rq_rcv_buf.head;
4919 __be32 *p;
4920 uint32_t count, eof, recvd, hdrlen;
4921 int status;
4922
4923 status = decode_op_hdr(xdr, OP_READ);
4924 if (status)
4925 return status;
4926 p = xdr_inline_decode(xdr, 8);
4927 if (unlikely(!p))
4928 goto out_overflow;
4929 eof = be32_to_cpup(p++);
4930 count = be32_to_cpup(p);
4931 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
4932 recvd = req->rq_rcv_buf.len - hdrlen;
4933 if (count > recvd) {
4934 dprintk("NFS: server cheating in read reply: "
4935 "count %u > recvd %u\n", count, recvd);
4936 count = recvd;
4937 eof = 0;
4938 }
4939 xdr_read_pages(xdr, count);
4940 res->eof = eof;
4941 res->count = count;
4942 return 0;
4943 out_overflow:
4944 print_overflow_msg(__func__, xdr);
4945 return -EIO;
4946 }
4947
4948 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4949 {
4950 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4951 struct kvec *iov = rcvbuf->head;
4952 size_t hdrlen;
4953 u32 recvd, pglen = rcvbuf->page_len;
4954 int status;
4955 __be32 verf[2];
4956
4957 status = decode_op_hdr(xdr, OP_READDIR);
4958 if (!status)
4959 status = decode_verifier(xdr, readdir->verifier.data);
4960 if (unlikely(status))
4961 return status;
4962 memcpy(verf, readdir->verifier.data, sizeof(verf));
4963 dprintk("%s: verifier = %08x:%08x\n",
4964 __func__, verf[0], verf[1]);
4965
4966 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4967 recvd = rcvbuf->len - hdrlen;
4968 if (pglen > recvd)
4969 pglen = recvd;
4970 xdr_read_pages(xdr, pglen);
4971
4972
4973 return pglen;
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 struct kvec *iov = rcvbuf->head;
4980 size_t hdrlen;
4981 u32 len, recvd;
4982 __be32 *p;
4983 int status;
4984
4985 status = decode_op_hdr(xdr, OP_READLINK);
4986 if (status)
4987 return status;
4988
4989 /* Convert length of symlink */
4990 p = xdr_inline_decode(xdr, 4);
4991 if (unlikely(!p))
4992 goto out_overflow;
4993 len = be32_to_cpup(p);
4994 if (len >= rcvbuf->page_len || len <= 0) {
4995 dprintk("nfs: server returned giant symlink!\n");
4996 return -ENAMETOOLONG;
4997 }
4998 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4999 recvd = req->rq_rcv_buf.len - hdrlen;
5000 if (recvd < len) {
5001 dprintk("NFS: server cheating in readlink reply: "
5002 "count %u > recvd %u\n", len, recvd);
5003 return -EIO;
5004 }
5005 xdr_read_pages(xdr, len);
5006 /*
5007 * The XDR encode routine has set things up so that
5008 * the link text will be copied directly into the
5009 * buffer. We just have to do overflow-checking,
5010 * and and null-terminate the text (the VFS expects
5011 * null-termination).
5012 */
5013 xdr_terminate_string(rcvbuf, len);
5014 return 0;
5015 out_overflow:
5016 print_overflow_msg(__func__, xdr);
5017 return -EIO;
5018 }
5019
5020 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5021 {
5022 int status;
5023
5024 status = decode_op_hdr(xdr, OP_REMOVE);
5025 if (status)
5026 goto out;
5027 status = decode_change_info(xdr, cinfo);
5028 out:
5029 return status;
5030 }
5031
5032 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5033 struct nfs4_change_info *new_cinfo)
5034 {
5035 int status;
5036
5037 status = decode_op_hdr(xdr, OP_RENAME);
5038 if (status)
5039 goto out;
5040 if ((status = decode_change_info(xdr, old_cinfo)))
5041 goto out;
5042 status = decode_change_info(xdr, new_cinfo);
5043 out:
5044 return status;
5045 }
5046
5047 static int decode_renew(struct xdr_stream *xdr)
5048 {
5049 return decode_op_hdr(xdr, OP_RENEW);
5050 }
5051
5052 static int
5053 decode_restorefh(struct xdr_stream *xdr)
5054 {
5055 return decode_op_hdr(xdr, OP_RESTOREFH);
5056 }
5057
5058 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5059 struct nfs_getaclres *res)
5060 {
5061 __be32 *savep, *bm_p;
5062 uint32_t attrlen,
5063 bitmap[3] = {0};
5064 struct kvec *iov = req->rq_rcv_buf.head;
5065 int status;
5066 size_t page_len = xdr->buf->page_len;
5067
5068 res->acl_len = 0;
5069 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5070 goto out;
5071
5072 bm_p = xdr->p;
5073 res->acl_data_offset = be32_to_cpup(bm_p) + 2;
5074 res->acl_data_offset <<= 2;
5075 /* Check if the acl data starts beyond the allocated buffer */
5076 if (res->acl_data_offset > page_len)
5077 return -ERANGE;
5078
5079 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5080 goto out;
5081 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5082 goto out;
5083
5084 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5085 return -EIO;
5086 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5087 size_t hdrlen;
5088
5089 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5090 * are stored with the acl data to handle the problem of
5091 * variable length bitmaps.*/
5092 xdr->p = bm_p;
5093
5094 /* We ignore &savep and don't do consistency checks on
5095 * the attr length. Let userspace figure it out.... */
5096 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
5097 attrlen += res->acl_data_offset;
5098 if (attrlen > page_len) {
5099 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) {
5100 /* getxattr interface called with a NULL buf */
5101 res->acl_len = attrlen;
5102 goto out;
5103 }
5104 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5105 attrlen, page_len);
5106 return -EINVAL;
5107 }
5108 xdr_read_pages(xdr, attrlen);
5109 res->acl_len = attrlen;
5110 } else
5111 status = -EOPNOTSUPP;
5112
5113 out:
5114 return status;
5115 }
5116
5117 static int
5118 decode_savefh(struct xdr_stream *xdr)
5119 {
5120 return decode_op_hdr(xdr, OP_SAVEFH);
5121 }
5122
5123 static int decode_setattr(struct xdr_stream *xdr)
5124 {
5125 __be32 *p;
5126 uint32_t bmlen;
5127 int status;
5128
5129 status = decode_op_hdr(xdr, OP_SETATTR);
5130 if (status)
5131 return status;
5132 p = xdr_inline_decode(xdr, 4);
5133 if (unlikely(!p))
5134 goto out_overflow;
5135 bmlen = be32_to_cpup(p);
5136 p = xdr_inline_decode(xdr, bmlen << 2);
5137 if (likely(p))
5138 return 0;
5139 out_overflow:
5140 print_overflow_msg(__func__, xdr);
5141 return -EIO;
5142 }
5143
5144 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5145 {
5146 __be32 *p;
5147 uint32_t opnum;
5148 int32_t nfserr;
5149
5150 p = xdr_inline_decode(xdr, 8);
5151 if (unlikely(!p))
5152 goto out_overflow;
5153 opnum = be32_to_cpup(p++);
5154 if (opnum != OP_SETCLIENTID) {
5155 dprintk("nfs: decode_setclientid: Server returned operation"
5156 " %d\n", opnum);
5157 return -EIO;
5158 }
5159 nfserr = be32_to_cpup(p);
5160 if (nfserr == NFS_OK) {
5161 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5162 if (unlikely(!p))
5163 goto out_overflow;
5164 p = xdr_decode_hyper(p, &res->clientid);
5165 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5166 } else if (nfserr == NFSERR_CLID_INUSE) {
5167 uint32_t len;
5168
5169 /* skip netid string */
5170 p = xdr_inline_decode(xdr, 4);
5171 if (unlikely(!p))
5172 goto out_overflow;
5173 len = be32_to_cpup(p);
5174 p = xdr_inline_decode(xdr, len);
5175 if (unlikely(!p))
5176 goto out_overflow;
5177
5178 /* skip uaddr string */
5179 p = xdr_inline_decode(xdr, 4);
5180 if (unlikely(!p))
5181 goto out_overflow;
5182 len = be32_to_cpup(p);
5183 p = xdr_inline_decode(xdr, len);
5184 if (unlikely(!p))
5185 goto out_overflow;
5186 return -NFSERR_CLID_INUSE;
5187 } else
5188 return nfs4_stat_to_errno(nfserr);
5189
5190 return 0;
5191 out_overflow:
5192 print_overflow_msg(__func__, xdr);
5193 return -EIO;
5194 }
5195
5196 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5197 {
5198 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5199 }
5200
5201 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5202 {
5203 __be32 *p;
5204 int status;
5205
5206 status = decode_op_hdr(xdr, OP_WRITE);
5207 if (status)
5208 return status;
5209
5210 p = xdr_inline_decode(xdr, 16);
5211 if (unlikely(!p))
5212 goto out_overflow;
5213 res->count = be32_to_cpup(p++);
5214 res->verf->committed = be32_to_cpup(p++);
5215 memcpy(res->verf->verifier, p, NFS4_VERIFIER_SIZE);
5216 return 0;
5217 out_overflow:
5218 print_overflow_msg(__func__, xdr);
5219 return -EIO;
5220 }
5221
5222 static int decode_delegreturn(struct xdr_stream *xdr)
5223 {
5224 return decode_op_hdr(xdr, OP_DELEGRETURN);
5225 }
5226
5227 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5228 {
5229 __be32 *p;
5230
5231 p = xdr_inline_decode(xdr, 4);
5232 if (unlikely(!p))
5233 goto out_overflow;
5234 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5235 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5236 goto out_err;
5237
5238 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5239 if (unlikely(!p))
5240 goto out_overflow;
5241 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5242
5243 p = xdr_inline_decode(xdr, 8);
5244 if (unlikely(!p))
5245 goto out_overflow;
5246 flavor->gss.qop4 = be32_to_cpup(p++);
5247 flavor->gss.service = be32_to_cpup(p);
5248
5249 return 0;
5250
5251 out_overflow:
5252 print_overflow_msg(__func__, xdr);
5253 return -EIO;
5254 out_err:
5255 return -EINVAL;
5256 }
5257
5258 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5259 {
5260 struct nfs4_secinfo_flavor *sec_flavor;
5261 int status;
5262 __be32 *p;
5263 int i, num_flavors;
5264
5265 p = xdr_inline_decode(xdr, 4);
5266 if (unlikely(!p))
5267 goto out_overflow;
5268
5269 res->flavors->num_flavors = 0;
5270 num_flavors = be32_to_cpup(p);
5271
5272 for (i = 0; i < num_flavors; i++) {
5273 sec_flavor = &res->flavors->flavors[i];
5274 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5275 break;
5276
5277 p = xdr_inline_decode(xdr, 4);
5278 if (unlikely(!p))
5279 goto out_overflow;
5280 sec_flavor->flavor = be32_to_cpup(p);
5281
5282 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5283 status = decode_secinfo_gss(xdr, sec_flavor);
5284 if (status)
5285 goto out;
5286 }
5287 res->flavors->num_flavors++;
5288 }
5289
5290 status = 0;
5291 out:
5292 return status;
5293 out_overflow:
5294 print_overflow_msg(__func__, xdr);
5295 return -EIO;
5296 }
5297
5298 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5299 {
5300 int status = decode_op_hdr(xdr, OP_SECINFO);
5301 if (status)
5302 return status;
5303 return decode_secinfo_common(xdr, res);
5304 }
5305
5306 #if defined(CONFIG_NFS_V4_1)
5307 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5308 {
5309 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5310 if (status)
5311 return status;
5312 return decode_secinfo_common(xdr, res);
5313 }
5314
5315 static int decode_exchange_id(struct xdr_stream *xdr,
5316 struct nfs41_exchange_id_res *res)
5317 {
5318 __be32 *p;
5319 uint32_t dummy;
5320 char *dummy_str;
5321 int status;
5322 uint32_t impl_id_count;
5323
5324 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5325 if (status)
5326 return status;
5327
5328 p = xdr_inline_decode(xdr, 8);
5329 if (unlikely(!p))
5330 goto out_overflow;
5331 xdr_decode_hyper(p, &res->clientid);
5332 p = xdr_inline_decode(xdr, 12);
5333 if (unlikely(!p))
5334 goto out_overflow;
5335 res->seqid = be32_to_cpup(p++);
5336 res->flags = be32_to_cpup(p++);
5337
5338 /* We ask for SP4_NONE */
5339 dummy = be32_to_cpup(p);
5340 if (dummy != SP4_NONE)
5341 return -EIO;
5342
5343 /* server_owner4.so_minor_id */
5344 p = xdr_inline_decode(xdr, 8);
5345 if (unlikely(!p))
5346 goto out_overflow;
5347 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5348
5349 /* server_owner4.so_major_id */
5350 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5351 if (unlikely(status))
5352 return status;
5353 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5354 return -EIO;
5355 memcpy(res->server_owner->major_id, dummy_str, dummy);
5356 res->server_owner->major_id_sz = dummy;
5357
5358 /* server_scope4 */
5359 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5360 if (unlikely(status))
5361 return status;
5362 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5363 return -EIO;
5364 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5365 res->server_scope->server_scope_sz = dummy;
5366
5367 /* Implementation Id */
5368 p = xdr_inline_decode(xdr, 4);
5369 if (unlikely(!p))
5370 goto out_overflow;
5371 impl_id_count = be32_to_cpup(p++);
5372
5373 if (impl_id_count) {
5374 /* nii_domain */
5375 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5376 if (unlikely(status))
5377 return status;
5378 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5379 return -EIO;
5380 memcpy(res->impl_id->domain, dummy_str, dummy);
5381
5382 /* nii_name */
5383 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5384 if (unlikely(status))
5385 return status;
5386 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5387 return -EIO;
5388 memcpy(res->impl_id->name, dummy_str, dummy);
5389
5390 /* nii_date */
5391 p = xdr_inline_decode(xdr, 12);
5392 if (unlikely(!p))
5393 goto out_overflow;
5394 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5395 res->impl_id->date.nseconds = be32_to_cpup(p);
5396
5397 /* if there's more than one entry, ignore the rest */
5398 }
5399 return 0;
5400 out_overflow:
5401 print_overflow_msg(__func__, xdr);
5402 return -EIO;
5403 }
5404
5405 static int decode_chan_attrs(struct xdr_stream *xdr,
5406 struct nfs4_channel_attrs *attrs)
5407 {
5408 __be32 *p;
5409 u32 nr_attrs, val;
5410
5411 p = xdr_inline_decode(xdr, 28);
5412 if (unlikely(!p))
5413 goto out_overflow;
5414 val = be32_to_cpup(p++); /* headerpadsz */
5415 if (val)
5416 return -EINVAL; /* no support for header padding yet */
5417 attrs->max_rqst_sz = be32_to_cpup(p++);
5418 attrs->max_resp_sz = be32_to_cpup(p++);
5419 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5420 attrs->max_ops = be32_to_cpup(p++);
5421 attrs->max_reqs = be32_to_cpup(p++);
5422 nr_attrs = be32_to_cpup(p);
5423 if (unlikely(nr_attrs > 1)) {
5424 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5425 "count %u\n", __func__, nr_attrs);
5426 return -EINVAL;
5427 }
5428 if (nr_attrs == 1) {
5429 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5430 if (unlikely(!p))
5431 goto out_overflow;
5432 }
5433 return 0;
5434 out_overflow:
5435 print_overflow_msg(__func__, xdr);
5436 return -EIO;
5437 }
5438
5439 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5440 {
5441 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5442 }
5443
5444 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5445 struct nfs41_bind_conn_to_session_res *res)
5446 {
5447 __be32 *p;
5448 int status;
5449
5450 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5451 if (!status)
5452 status = decode_sessionid(xdr, &res->session->sess_id);
5453 if (unlikely(status))
5454 return status;
5455
5456 /* dir flags, rdma mode bool */
5457 p = xdr_inline_decode(xdr, 8);
5458 if (unlikely(!p))
5459 goto out_overflow;
5460
5461 res->dir = be32_to_cpup(p++);
5462 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5463 return -EIO;
5464 if (be32_to_cpup(p) == 0)
5465 res->use_conn_in_rdma_mode = false;
5466 else
5467 res->use_conn_in_rdma_mode = true;
5468
5469 return 0;
5470 out_overflow:
5471 print_overflow_msg(__func__, xdr);
5472 return -EIO;
5473 }
5474
5475 static int decode_create_session(struct xdr_stream *xdr,
5476 struct nfs41_create_session_res *res)
5477 {
5478 __be32 *p;
5479 int status;
5480 struct nfs_client *clp = res->client;
5481 struct nfs4_session *session = clp->cl_session;
5482
5483 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5484 if (!status)
5485 status = decode_sessionid(xdr, &session->sess_id);
5486 if (unlikely(status))
5487 return status;
5488
5489 /* seqid, flags */
5490 p = xdr_inline_decode(xdr, 8);
5491 if (unlikely(!p))
5492 goto out_overflow;
5493 clp->cl_seqid = be32_to_cpup(p++);
5494 session->flags = be32_to_cpup(p);
5495
5496 /* Channel attributes */
5497 status = decode_chan_attrs(xdr, &session->fc_attrs);
5498 if (!status)
5499 status = decode_chan_attrs(xdr, &session->bc_attrs);
5500 return status;
5501 out_overflow:
5502 print_overflow_msg(__func__, xdr);
5503 return -EIO;
5504 }
5505
5506 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5507 {
5508 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5509 }
5510
5511 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5512 {
5513 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5514 }
5515
5516 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5517 {
5518 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5519 }
5520 #endif /* CONFIG_NFS_V4_1 */
5521
5522 static int decode_sequence(struct xdr_stream *xdr,
5523 struct nfs4_sequence_res *res,
5524 struct rpc_rqst *rqstp)
5525 {
5526 #if defined(CONFIG_NFS_V4_1)
5527 struct nfs4_sessionid id;
5528 u32 dummy;
5529 int status;
5530 __be32 *p;
5531
5532 if (!res->sr_session)
5533 return 0;
5534
5535 status = decode_op_hdr(xdr, OP_SEQUENCE);
5536 if (!status)
5537 status = decode_sessionid(xdr, &id);
5538 if (unlikely(status))
5539 goto out_err;
5540
5541 /*
5542 * If the server returns different values for sessionID, slotID or
5543 * sequence number, the server is looney tunes.
5544 */
5545 status = -EREMOTEIO;
5546
5547 if (memcmp(id.data, res->sr_session->sess_id.data,
5548 NFS4_MAX_SESSIONID_LEN)) {
5549 dprintk("%s Invalid session id\n", __func__);
5550 goto out_err;
5551 }
5552
5553 p = xdr_inline_decode(xdr, 20);
5554 if (unlikely(!p))
5555 goto out_overflow;
5556
5557 /* seqid */
5558 dummy = be32_to_cpup(p++);
5559 if (dummy != res->sr_slot->seq_nr) {
5560 dprintk("%s Invalid sequence number\n", __func__);
5561 goto out_err;
5562 }
5563 /* slot id */
5564 dummy = be32_to_cpup(p++);
5565 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5566 dprintk("%s Invalid slot id\n", __func__);
5567 goto out_err;
5568 }
5569 /* highest slot id - currently not processed */
5570 dummy = be32_to_cpup(p++);
5571 /* target highest slot id - currently not processed */
5572 dummy = be32_to_cpup(p++);
5573 /* result flags */
5574 res->sr_status_flags = be32_to_cpup(p);
5575 status = 0;
5576 out_err:
5577 res->sr_status = status;
5578 return status;
5579 out_overflow:
5580 print_overflow_msg(__func__, xdr);
5581 status = -EIO;
5582 goto out_err;
5583 #else /* CONFIG_NFS_V4_1 */
5584 return 0;
5585 #endif /* CONFIG_NFS_V4_1 */
5586 }
5587
5588 #if defined(CONFIG_NFS_V4_1)
5589 /*
5590 * TODO: Need to handle case when EOF != true;
5591 */
5592 static int decode_getdevicelist(struct xdr_stream *xdr,
5593 struct pnfs_devicelist *res)
5594 {
5595 __be32 *p;
5596 int status, i;
5597 struct nfs_writeverf verftemp;
5598
5599 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5600 if (status)
5601 return status;
5602
5603 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5604 if (unlikely(!p))
5605 goto out_overflow;
5606
5607 /* TODO: Skip cookie for now */
5608 p += 2;
5609
5610 /* Read verifier */
5611 p = xdr_decode_opaque_fixed(p, verftemp.verifier, NFS4_VERIFIER_SIZE);
5612
5613 res->num_devs = be32_to_cpup(p);
5614
5615 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5616
5617 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5618 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5619 __func__, res->num_devs);
5620 return -EIO;
5621 }
5622
5623 p = xdr_inline_decode(xdr,
5624 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5625 if (unlikely(!p))
5626 goto out_overflow;
5627 for (i = 0; i < res->num_devs; i++)
5628 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5629 NFS4_DEVICEID4_SIZE);
5630 res->eof = be32_to_cpup(p);
5631 return 0;
5632 out_overflow:
5633 print_overflow_msg(__func__, xdr);
5634 return -EIO;
5635 }
5636
5637 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5638 struct pnfs_device *pdev)
5639 {
5640 __be32 *p;
5641 uint32_t len, type;
5642 int status;
5643
5644 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5645 if (status) {
5646 if (status == -ETOOSMALL) {
5647 p = xdr_inline_decode(xdr, 4);
5648 if (unlikely(!p))
5649 goto out_overflow;
5650 pdev->mincount = be32_to_cpup(p);
5651 dprintk("%s: Min count too small. mincnt = %u\n",
5652 __func__, pdev->mincount);
5653 }
5654 return status;
5655 }
5656
5657 p = xdr_inline_decode(xdr, 8);
5658 if (unlikely(!p))
5659 goto out_overflow;
5660 type = be32_to_cpup(p++);
5661 if (type != pdev->layout_type) {
5662 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5663 __func__, pdev->layout_type, type);
5664 return -EINVAL;
5665 }
5666 /*
5667 * Get the length of the opaque device_addr4. xdr_read_pages places
5668 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5669 * and places the remaining xdr data in xdr_buf->tail
5670 */
5671 pdev->mincount = be32_to_cpup(p);
5672 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5673
5674 /* Parse notification bitmap, verifying that it is zero. */
5675 p = xdr_inline_decode(xdr, 4);
5676 if (unlikely(!p))
5677 goto out_overflow;
5678 len = be32_to_cpup(p);
5679 if (len) {
5680 uint32_t i;
5681
5682 p = xdr_inline_decode(xdr, 4 * len);
5683 if (unlikely(!p))
5684 goto out_overflow;
5685 for (i = 0; i < len; i++, p++) {
5686 if (be32_to_cpup(p)) {
5687 dprintk("%s: notifications not supported\n",
5688 __func__);
5689 return -EIO;
5690 }
5691 }
5692 }
5693 return 0;
5694 out_overflow:
5695 print_overflow_msg(__func__, xdr);
5696 return -EIO;
5697 }
5698
5699 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5700 struct nfs4_layoutget_res *res)
5701 {
5702 __be32 *p;
5703 int status;
5704 u32 layout_count;
5705 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5706 struct kvec *iov = rcvbuf->head;
5707 u32 hdrlen, recvd;
5708
5709 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5710 if (status)
5711 return status;
5712 p = xdr_inline_decode(xdr, 4);
5713 if (unlikely(!p))
5714 goto out_overflow;
5715 res->return_on_close = be32_to_cpup(p);
5716 decode_stateid(xdr, &res->stateid);
5717 p = xdr_inline_decode(xdr, 4);
5718 if (unlikely(!p))
5719 goto out_overflow;
5720 layout_count = be32_to_cpup(p);
5721 if (!layout_count) {
5722 dprintk("%s: server responded with empty layout array\n",
5723 __func__);
5724 return -EINVAL;
5725 }
5726
5727 p = xdr_inline_decode(xdr, 28);
5728 if (unlikely(!p))
5729 goto out_overflow;
5730 p = xdr_decode_hyper(p, &res->range.offset);
5731 p = xdr_decode_hyper(p, &res->range.length);
5732 res->range.iomode = be32_to_cpup(p++);
5733 res->type = be32_to_cpup(p++);
5734 res->layoutp->len = be32_to_cpup(p);
5735
5736 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5737 __func__,
5738 (unsigned long)res->range.offset,
5739 (unsigned long)res->range.length,
5740 res->range.iomode,
5741 res->type,
5742 res->layoutp->len);
5743
5744 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
5745 recvd = req->rq_rcv_buf.len - hdrlen;
5746 if (res->layoutp->len > recvd) {
5747 dprintk("NFS: server cheating in layoutget reply: "
5748 "layout len %u > recvd %u\n",
5749 res->layoutp->len, recvd);
5750 return -EINVAL;
5751 }
5752
5753 xdr_read_pages(xdr, res->layoutp->len);
5754
5755 if (layout_count > 1) {
5756 /* We only handle a length one array at the moment. Any
5757 * further entries are just ignored. Note that this means
5758 * the client may see a response that is less than the
5759 * minimum it requested.
5760 */
5761 dprintk("%s: server responded with %d layouts, dropping tail\n",
5762 __func__, layout_count);
5763 }
5764
5765 return 0;
5766 out_overflow:
5767 print_overflow_msg(__func__, xdr);
5768 return -EIO;
5769 }
5770
5771 static int decode_layoutreturn(struct xdr_stream *xdr,
5772 struct nfs4_layoutreturn_res *res)
5773 {
5774 __be32 *p;
5775 int status;
5776
5777 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5778 if (status)
5779 return status;
5780 p = xdr_inline_decode(xdr, 4);
5781 if (unlikely(!p))
5782 goto out_overflow;
5783 res->lrs_present = be32_to_cpup(p);
5784 if (res->lrs_present)
5785 status = decode_stateid(xdr, &res->stateid);
5786 return status;
5787 out_overflow:
5788 print_overflow_msg(__func__, xdr);
5789 return -EIO;
5790 }
5791
5792 static int decode_layoutcommit(struct xdr_stream *xdr,
5793 struct rpc_rqst *req,
5794 struct nfs4_layoutcommit_res *res)
5795 {
5796 __be32 *p;
5797 __u32 sizechanged;
5798 int status;
5799
5800 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5801 res->status = status;
5802 if (status)
5803 return status;
5804
5805 p = xdr_inline_decode(xdr, 4);
5806 if (unlikely(!p))
5807 goto out_overflow;
5808 sizechanged = be32_to_cpup(p);
5809
5810 if (sizechanged) {
5811 /* throw away new size */
5812 p = xdr_inline_decode(xdr, 8);
5813 if (unlikely(!p))
5814 goto out_overflow;
5815 }
5816 return 0;
5817 out_overflow:
5818 print_overflow_msg(__func__, xdr);
5819 return -EIO;
5820 }
5821
5822 static int decode_test_stateid(struct xdr_stream *xdr,
5823 struct nfs41_test_stateid_res *res)
5824 {
5825 __be32 *p;
5826 int status;
5827 int num_res;
5828
5829 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5830 if (status)
5831 return status;
5832
5833 p = xdr_inline_decode(xdr, 4);
5834 if (unlikely(!p))
5835 goto out_overflow;
5836 num_res = be32_to_cpup(p++);
5837 if (num_res != 1)
5838 goto out;
5839
5840 p = xdr_inline_decode(xdr, 4);
5841 if (unlikely(!p))
5842 goto out_overflow;
5843 res->status = be32_to_cpup(p++);
5844
5845 return status;
5846 out_overflow:
5847 print_overflow_msg(__func__, xdr);
5848 out:
5849 return -EIO;
5850 }
5851
5852 static int decode_free_stateid(struct xdr_stream *xdr,
5853 struct nfs41_free_stateid_res *res)
5854 {
5855 __be32 *p;
5856 int status;
5857
5858 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5859 if (status)
5860 return status;
5861
5862 p = xdr_inline_decode(xdr, 4);
5863 if (unlikely(!p))
5864 goto out_overflow;
5865 res->status = be32_to_cpup(p++);
5866 return res->status;
5867 out_overflow:
5868 print_overflow_msg(__func__, xdr);
5869 return -EIO;
5870 }
5871 #endif /* CONFIG_NFS_V4_1 */
5872
5873 /*
5874 * END OF "GENERIC" DECODE ROUTINES.
5875 */
5876
5877 /*
5878 * Decode OPEN_DOWNGRADE response
5879 */
5880 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5881 struct xdr_stream *xdr,
5882 struct nfs_closeres *res)
5883 {
5884 struct compound_hdr hdr;
5885 int status;
5886
5887 status = decode_compound_hdr(xdr, &hdr);
5888 if (status)
5889 goto out;
5890 status = decode_sequence(xdr, &res->seq_res, rqstp);
5891 if (status)
5892 goto out;
5893 status = decode_putfh(xdr);
5894 if (status)
5895 goto out;
5896 status = decode_open_downgrade(xdr, res);
5897 if (status != 0)
5898 goto out;
5899 decode_getfattr(xdr, res->fattr, res->server);
5900 out:
5901 return status;
5902 }
5903
5904 /*
5905 * Decode ACCESS response
5906 */
5907 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5908 struct nfs4_accessres *res)
5909 {
5910 struct compound_hdr hdr;
5911 int status;
5912
5913 status = decode_compound_hdr(xdr, &hdr);
5914 if (status)
5915 goto out;
5916 status = decode_sequence(xdr, &res->seq_res, rqstp);
5917 if (status)
5918 goto out;
5919 status = decode_putfh(xdr);
5920 if (status != 0)
5921 goto out;
5922 status = decode_access(xdr, res);
5923 if (status != 0)
5924 goto out;
5925 decode_getfattr(xdr, res->fattr, res->server);
5926 out:
5927 return status;
5928 }
5929
5930 /*
5931 * Decode LOOKUP response
5932 */
5933 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5934 struct nfs4_lookup_res *res)
5935 {
5936 struct compound_hdr hdr;
5937 int status;
5938
5939 status = decode_compound_hdr(xdr, &hdr);
5940 if (status)
5941 goto out;
5942 status = decode_sequence(xdr, &res->seq_res, rqstp);
5943 if (status)
5944 goto out;
5945 status = decode_putfh(xdr);
5946 if (status)
5947 goto out;
5948 status = decode_lookup(xdr);
5949 if (status)
5950 goto out;
5951 status = decode_getfh(xdr, res->fh);
5952 if (status)
5953 goto out;
5954 status = decode_getfattr(xdr, res->fattr, res->server);
5955 out:
5956 return status;
5957 }
5958
5959 /*
5960 * Decode LOOKUP_ROOT response
5961 */
5962 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5963 struct xdr_stream *xdr,
5964 struct nfs4_lookup_res *res)
5965 {
5966 struct compound_hdr hdr;
5967 int status;
5968
5969 status = decode_compound_hdr(xdr, &hdr);
5970 if (status)
5971 goto out;
5972 status = decode_sequence(xdr, &res->seq_res, rqstp);
5973 if (status)
5974 goto out;
5975 status = decode_putrootfh(xdr);
5976 if (status)
5977 goto out;
5978 status = decode_getfh(xdr, res->fh);
5979 if (status == 0)
5980 status = decode_getfattr(xdr, res->fattr, res->server);
5981 out:
5982 return status;
5983 }
5984
5985 /*
5986 * Decode REMOVE response
5987 */
5988 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5989 struct nfs_removeres *res)
5990 {
5991 struct compound_hdr hdr;
5992 int status;
5993
5994 status = decode_compound_hdr(xdr, &hdr);
5995 if (status)
5996 goto out;
5997 status = decode_sequence(xdr, &res->seq_res, rqstp);
5998 if (status)
5999 goto out;
6000 status = decode_putfh(xdr);
6001 if (status)
6002 goto out;
6003 status = decode_remove(xdr, &res->cinfo);
6004 out:
6005 return status;
6006 }
6007
6008 /*
6009 * Decode RENAME response
6010 */
6011 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6012 struct nfs_renameres *res)
6013 {
6014 struct compound_hdr hdr;
6015 int status;
6016
6017 status = decode_compound_hdr(xdr, &hdr);
6018 if (status)
6019 goto out;
6020 status = decode_sequence(xdr, &res->seq_res, rqstp);
6021 if (status)
6022 goto out;
6023 status = decode_putfh(xdr);
6024 if (status)
6025 goto out;
6026 status = decode_savefh(xdr);
6027 if (status)
6028 goto out;
6029 status = decode_putfh(xdr);
6030 if (status)
6031 goto out;
6032 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6033 out:
6034 return status;
6035 }
6036
6037 /*
6038 * Decode LINK response
6039 */
6040 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6041 struct nfs4_link_res *res)
6042 {
6043 struct compound_hdr hdr;
6044 int status;
6045
6046 status = decode_compound_hdr(xdr, &hdr);
6047 if (status)
6048 goto out;
6049 status = decode_sequence(xdr, &res->seq_res, rqstp);
6050 if (status)
6051 goto out;
6052 status = decode_putfh(xdr);
6053 if (status)
6054 goto out;
6055 status = decode_savefh(xdr);
6056 if (status)
6057 goto out;
6058 status = decode_putfh(xdr);
6059 if (status)
6060 goto out;
6061 status = decode_link(xdr, &res->cinfo);
6062 if (status)
6063 goto out;
6064 /*
6065 * Note order: OP_LINK leaves the directory as the current
6066 * filehandle.
6067 */
6068 status = decode_restorefh(xdr);
6069 if (status)
6070 goto out;
6071 decode_getfattr(xdr, res->fattr, res->server);
6072 out:
6073 return status;
6074 }
6075
6076 /*
6077 * Decode CREATE response
6078 */
6079 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6080 struct nfs4_create_res *res)
6081 {
6082 struct compound_hdr hdr;
6083 int status;
6084
6085 status = decode_compound_hdr(xdr, &hdr);
6086 if (status)
6087 goto out;
6088 status = decode_sequence(xdr, &res->seq_res, rqstp);
6089 if (status)
6090 goto out;
6091 status = decode_putfh(xdr);
6092 if (status)
6093 goto out;
6094 status = decode_create(xdr, &res->dir_cinfo);
6095 if (status)
6096 goto out;
6097 status = decode_getfh(xdr, res->fh);
6098 if (status)
6099 goto out;
6100 decode_getfattr(xdr, res->fattr, res->server);
6101 out:
6102 return status;
6103 }
6104
6105 /*
6106 * Decode SYMLINK response
6107 */
6108 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6109 struct nfs4_create_res *res)
6110 {
6111 return nfs4_xdr_dec_create(rqstp, xdr, res);
6112 }
6113
6114 /*
6115 * Decode GETATTR response
6116 */
6117 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6118 struct nfs4_getattr_res *res)
6119 {
6120 struct compound_hdr hdr;
6121 int status;
6122
6123 status = decode_compound_hdr(xdr, &hdr);
6124 if (status)
6125 goto out;
6126 status = decode_sequence(xdr, &res->seq_res, rqstp);
6127 if (status)
6128 goto out;
6129 status = decode_putfh(xdr);
6130 if (status)
6131 goto out;
6132 status = decode_getfattr(xdr, res->fattr, res->server);
6133 out:
6134 return status;
6135 }
6136
6137 /*
6138 * Encode an SETACL request
6139 */
6140 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6141 struct nfs_setaclargs *args)
6142 {
6143 struct compound_hdr hdr = {
6144 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6145 };
6146
6147 encode_compound_hdr(xdr, req, &hdr);
6148 encode_sequence(xdr, &args->seq_args, &hdr);
6149 encode_putfh(xdr, args->fh, &hdr);
6150 encode_setacl(xdr, args, &hdr);
6151 encode_nops(&hdr);
6152 }
6153
6154 /*
6155 * Decode SETACL response
6156 */
6157 static int
6158 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6159 struct nfs_setaclres *res)
6160 {
6161 struct compound_hdr hdr;
6162 int status;
6163
6164 status = decode_compound_hdr(xdr, &hdr);
6165 if (status)
6166 goto out;
6167 status = decode_sequence(xdr, &res->seq_res, rqstp);
6168 if (status)
6169 goto out;
6170 status = decode_putfh(xdr);
6171 if (status)
6172 goto out;
6173 status = decode_setattr(xdr);
6174 out:
6175 return status;
6176 }
6177
6178 /*
6179 * Decode GETACL response
6180 */
6181 static int
6182 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6183 struct nfs_getaclres *res)
6184 {
6185 struct compound_hdr hdr;
6186 int status;
6187
6188 if (res->acl_scratch != NULL) {
6189 void *p = page_address(res->acl_scratch);
6190 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6191 }
6192 status = decode_compound_hdr(xdr, &hdr);
6193 if (status)
6194 goto out;
6195 status = decode_sequence(xdr, &res->seq_res, rqstp);
6196 if (status)
6197 goto out;
6198 status = decode_putfh(xdr);
6199 if (status)
6200 goto out;
6201 status = decode_getacl(xdr, rqstp, res);
6202
6203 out:
6204 return status;
6205 }
6206
6207 /*
6208 * Decode CLOSE response
6209 */
6210 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6211 struct nfs_closeres *res)
6212 {
6213 struct compound_hdr hdr;
6214 int status;
6215
6216 status = decode_compound_hdr(xdr, &hdr);
6217 if (status)
6218 goto out;
6219 status = decode_sequence(xdr, &res->seq_res, rqstp);
6220 if (status)
6221 goto out;
6222 status = decode_putfh(xdr);
6223 if (status)
6224 goto out;
6225 status = decode_close(xdr, res);
6226 if (status != 0)
6227 goto out;
6228 /*
6229 * Note: Server may do delete on close for this file
6230 * in which case the getattr call will fail with
6231 * an ESTALE error. Shouldn't be a problem,
6232 * though, since fattr->valid will remain unset.
6233 */
6234 decode_getfattr(xdr, res->fattr, res->server);
6235 out:
6236 return status;
6237 }
6238
6239 /*
6240 * Decode OPEN response
6241 */
6242 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6243 struct nfs_openres *res)
6244 {
6245 struct compound_hdr hdr;
6246 int status;
6247
6248 status = decode_compound_hdr(xdr, &hdr);
6249 if (status)
6250 goto out;
6251 status = decode_sequence(xdr, &res->seq_res, rqstp);
6252 if (status)
6253 goto out;
6254 status = decode_putfh(xdr);
6255 if (status)
6256 goto out;
6257 status = decode_open(xdr, res);
6258 if (status)
6259 goto out;
6260 if (decode_getfh(xdr, &res->fh) != 0)
6261 goto out;
6262 decode_getfattr(xdr, res->f_attr, res->server);
6263 out:
6264 return status;
6265 }
6266
6267 /*
6268 * Decode OPEN_CONFIRM response
6269 */
6270 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6271 struct xdr_stream *xdr,
6272 struct nfs_open_confirmres *res)
6273 {
6274 struct compound_hdr hdr;
6275 int status;
6276
6277 status = decode_compound_hdr(xdr, &hdr);
6278 if (status)
6279 goto out;
6280 status = decode_putfh(xdr);
6281 if (status)
6282 goto out;
6283 status = decode_open_confirm(xdr, res);
6284 out:
6285 return status;
6286 }
6287
6288 /*
6289 * Decode OPEN response
6290 */
6291 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6292 struct xdr_stream *xdr,
6293 struct nfs_openres *res)
6294 {
6295 struct compound_hdr hdr;
6296 int status;
6297
6298 status = decode_compound_hdr(xdr, &hdr);
6299 if (status)
6300 goto out;
6301 status = decode_sequence(xdr, &res->seq_res, rqstp);
6302 if (status)
6303 goto out;
6304 status = decode_putfh(xdr);
6305 if (status)
6306 goto out;
6307 status = decode_open(xdr, res);
6308 if (status)
6309 goto out;
6310 decode_getfattr(xdr, res->f_attr, res->server);
6311 out:
6312 return status;
6313 }
6314
6315 /*
6316 * Decode SETATTR response
6317 */
6318 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6319 struct xdr_stream *xdr,
6320 struct nfs_setattrres *res)
6321 {
6322 struct compound_hdr hdr;
6323 int status;
6324
6325 status = decode_compound_hdr(xdr, &hdr);
6326 if (status)
6327 goto out;
6328 status = decode_sequence(xdr, &res->seq_res, rqstp);
6329 if (status)
6330 goto out;
6331 status = decode_putfh(xdr);
6332 if (status)
6333 goto out;
6334 status = decode_setattr(xdr);
6335 if (status)
6336 goto out;
6337 decode_getfattr(xdr, res->fattr, res->server);
6338 out:
6339 return status;
6340 }
6341
6342 /*
6343 * Decode LOCK response
6344 */
6345 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6346 struct nfs_lock_res *res)
6347 {
6348 struct compound_hdr hdr;
6349 int status;
6350
6351 status = decode_compound_hdr(xdr, &hdr);
6352 if (status)
6353 goto out;
6354 status = decode_sequence(xdr, &res->seq_res, rqstp);
6355 if (status)
6356 goto out;
6357 status = decode_putfh(xdr);
6358 if (status)
6359 goto out;
6360 status = decode_lock(xdr, res);
6361 out:
6362 return status;
6363 }
6364
6365 /*
6366 * Decode LOCKT response
6367 */
6368 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6369 struct nfs_lockt_res *res)
6370 {
6371 struct compound_hdr hdr;
6372 int status;
6373
6374 status = decode_compound_hdr(xdr, &hdr);
6375 if (status)
6376 goto out;
6377 status = decode_sequence(xdr, &res->seq_res, rqstp);
6378 if (status)
6379 goto out;
6380 status = decode_putfh(xdr);
6381 if (status)
6382 goto out;
6383 status = decode_lockt(xdr, res);
6384 out:
6385 return status;
6386 }
6387
6388 /*
6389 * Decode LOCKU response
6390 */
6391 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6392 struct nfs_locku_res *res)
6393 {
6394 struct compound_hdr hdr;
6395 int status;
6396
6397 status = decode_compound_hdr(xdr, &hdr);
6398 if (status)
6399 goto out;
6400 status = decode_sequence(xdr, &res->seq_res, rqstp);
6401 if (status)
6402 goto out;
6403 status = decode_putfh(xdr);
6404 if (status)
6405 goto out;
6406 status = decode_locku(xdr, res);
6407 out:
6408 return status;
6409 }
6410
6411 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6412 struct xdr_stream *xdr, void *dummy)
6413 {
6414 struct compound_hdr hdr;
6415 int status;
6416
6417 status = decode_compound_hdr(xdr, &hdr);
6418 if (!status)
6419 status = decode_release_lockowner(xdr);
6420 return status;
6421 }
6422
6423 /*
6424 * Decode READLINK response
6425 */
6426 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6427 struct xdr_stream *xdr,
6428 struct nfs4_readlink_res *res)
6429 {
6430 struct compound_hdr hdr;
6431 int status;
6432
6433 status = decode_compound_hdr(xdr, &hdr);
6434 if (status)
6435 goto out;
6436 status = decode_sequence(xdr, &res->seq_res, rqstp);
6437 if (status)
6438 goto out;
6439 status = decode_putfh(xdr);
6440 if (status)
6441 goto out;
6442 status = decode_readlink(xdr, rqstp);
6443 out:
6444 return status;
6445 }
6446
6447 /*
6448 * Decode READDIR response
6449 */
6450 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6451 struct nfs4_readdir_res *res)
6452 {
6453 struct compound_hdr hdr;
6454 int status;
6455
6456 status = decode_compound_hdr(xdr, &hdr);
6457 if (status)
6458 goto out;
6459 status = decode_sequence(xdr, &res->seq_res, rqstp);
6460 if (status)
6461 goto out;
6462 status = decode_putfh(xdr);
6463 if (status)
6464 goto out;
6465 status = decode_readdir(xdr, rqstp, res);
6466 out:
6467 return status;
6468 }
6469
6470 /*
6471 * Decode Read response
6472 */
6473 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6474 struct nfs_readres *res)
6475 {
6476 struct compound_hdr hdr;
6477 int status;
6478
6479 status = decode_compound_hdr(xdr, &hdr);
6480 if (status)
6481 goto out;
6482 status = decode_sequence(xdr, &res->seq_res, rqstp);
6483 if (status)
6484 goto out;
6485 status = decode_putfh(xdr);
6486 if (status)
6487 goto out;
6488 status = decode_read(xdr, rqstp, res);
6489 if (!status)
6490 status = res->count;
6491 out:
6492 return status;
6493 }
6494
6495 /*
6496 * Decode WRITE response
6497 */
6498 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6499 struct nfs_writeres *res)
6500 {
6501 struct compound_hdr hdr;
6502 int status;
6503
6504 status = decode_compound_hdr(xdr, &hdr);
6505 if (status)
6506 goto out;
6507 status = decode_sequence(xdr, &res->seq_res, rqstp);
6508 if (status)
6509 goto out;
6510 status = decode_putfh(xdr);
6511 if (status)
6512 goto out;
6513 status = decode_write(xdr, res);
6514 if (status)
6515 goto out;
6516 if (res->fattr)
6517 decode_getfattr(xdr, res->fattr, res->server);
6518 if (!status)
6519 status = res->count;
6520 out:
6521 return status;
6522 }
6523
6524 /*
6525 * Decode COMMIT response
6526 */
6527 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6528 struct nfs_commitres *res)
6529 {
6530 struct compound_hdr hdr;
6531 int status;
6532
6533 status = decode_compound_hdr(xdr, &hdr);
6534 if (status)
6535 goto out;
6536 status = decode_sequence(xdr, &res->seq_res, rqstp);
6537 if (status)
6538 goto out;
6539 status = decode_putfh(xdr);
6540 if (status)
6541 goto out;
6542 status = decode_commit(xdr, res);
6543 out:
6544 return status;
6545 }
6546
6547 /*
6548 * Decode FSINFO response
6549 */
6550 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6551 struct nfs4_fsinfo_res *res)
6552 {
6553 struct compound_hdr hdr;
6554 int status;
6555
6556 status = decode_compound_hdr(xdr, &hdr);
6557 if (!status)
6558 status = decode_sequence(xdr, &res->seq_res, req);
6559 if (!status)
6560 status = decode_putfh(xdr);
6561 if (!status)
6562 status = decode_fsinfo(xdr, res->fsinfo);
6563 return status;
6564 }
6565
6566 /*
6567 * Decode PATHCONF response
6568 */
6569 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6570 struct nfs4_pathconf_res *res)
6571 {
6572 struct compound_hdr hdr;
6573 int status;
6574
6575 status = decode_compound_hdr(xdr, &hdr);
6576 if (!status)
6577 status = decode_sequence(xdr, &res->seq_res, req);
6578 if (!status)
6579 status = decode_putfh(xdr);
6580 if (!status)
6581 status = decode_pathconf(xdr, res->pathconf);
6582 return status;
6583 }
6584
6585 /*
6586 * Decode STATFS response
6587 */
6588 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6589 struct nfs4_statfs_res *res)
6590 {
6591 struct compound_hdr hdr;
6592 int status;
6593
6594 status = decode_compound_hdr(xdr, &hdr);
6595 if (!status)
6596 status = decode_sequence(xdr, &res->seq_res, req);
6597 if (!status)
6598 status = decode_putfh(xdr);
6599 if (!status)
6600 status = decode_statfs(xdr, res->fsstat);
6601 return status;
6602 }
6603
6604 /*
6605 * Decode GETATTR_BITMAP response
6606 */
6607 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6608 struct xdr_stream *xdr,
6609 struct nfs4_server_caps_res *res)
6610 {
6611 struct compound_hdr hdr;
6612 int status;
6613
6614 status = decode_compound_hdr(xdr, &hdr);
6615 if (status)
6616 goto out;
6617 status = decode_sequence(xdr, &res->seq_res, req);
6618 if (status)
6619 goto out;
6620 status = decode_putfh(xdr);
6621 if (status)
6622 goto out;
6623 status = decode_server_caps(xdr, res);
6624 out:
6625 return status;
6626 }
6627
6628 /*
6629 * Decode RENEW response
6630 */
6631 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6632 void *__unused)
6633 {
6634 struct compound_hdr hdr;
6635 int status;
6636
6637 status = decode_compound_hdr(xdr, &hdr);
6638 if (!status)
6639 status = decode_renew(xdr);
6640 return status;
6641 }
6642
6643 /*
6644 * Decode SETCLIENTID response
6645 */
6646 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6647 struct xdr_stream *xdr,
6648 struct nfs4_setclientid_res *res)
6649 {
6650 struct compound_hdr hdr;
6651 int status;
6652
6653 status = decode_compound_hdr(xdr, &hdr);
6654 if (!status)
6655 status = decode_setclientid(xdr, res);
6656 return status;
6657 }
6658
6659 /*
6660 * Decode SETCLIENTID_CONFIRM response
6661 */
6662 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6663 struct xdr_stream *xdr,
6664 struct nfs_fsinfo *fsinfo)
6665 {
6666 struct compound_hdr hdr;
6667 int status;
6668
6669 status = decode_compound_hdr(xdr, &hdr);
6670 if (!status)
6671 status = decode_setclientid_confirm(xdr);
6672 if (!status)
6673 status = decode_putrootfh(xdr);
6674 if (!status)
6675 status = decode_fsinfo(xdr, fsinfo);
6676 return status;
6677 }
6678
6679 /*
6680 * Decode DELEGRETURN response
6681 */
6682 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6683 struct xdr_stream *xdr,
6684 struct nfs4_delegreturnres *res)
6685 {
6686 struct compound_hdr hdr;
6687 int status;
6688
6689 status = decode_compound_hdr(xdr, &hdr);
6690 if (status)
6691 goto out;
6692 status = decode_sequence(xdr, &res->seq_res, rqstp);
6693 if (status)
6694 goto out;
6695 status = decode_putfh(xdr);
6696 if (status != 0)
6697 goto out;
6698 status = decode_getfattr(xdr, res->fattr, res->server);
6699 if (status != 0)
6700 goto out;
6701 status = decode_delegreturn(xdr);
6702 out:
6703 return status;
6704 }
6705
6706 /*
6707 * Decode FS_LOCATIONS response
6708 */
6709 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6710 struct xdr_stream *xdr,
6711 struct nfs4_fs_locations_res *res)
6712 {
6713 struct compound_hdr hdr;
6714 int status;
6715
6716 status = decode_compound_hdr(xdr, &hdr);
6717 if (status)
6718 goto out;
6719 status = decode_sequence(xdr, &res->seq_res, req);
6720 if (status)
6721 goto out;
6722 status = decode_putfh(xdr);
6723 if (status)
6724 goto out;
6725 status = decode_lookup(xdr);
6726 if (status)
6727 goto out;
6728 xdr_enter_page(xdr, PAGE_SIZE);
6729 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6730 NULL, res->fs_locations,
6731 res->fs_locations->server);
6732 out:
6733 return status;
6734 }
6735
6736 /*
6737 * Decode SECINFO response
6738 */
6739 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6740 struct xdr_stream *xdr,
6741 struct nfs4_secinfo_res *res)
6742 {
6743 struct compound_hdr hdr;
6744 int status;
6745
6746 status = decode_compound_hdr(xdr, &hdr);
6747 if (status)
6748 goto out;
6749 status = decode_sequence(xdr, &res->seq_res, rqstp);
6750 if (status)
6751 goto out;
6752 status = decode_putfh(xdr);
6753 if (status)
6754 goto out;
6755 status = decode_secinfo(xdr, res);
6756 out:
6757 return status;
6758 }
6759
6760 #if defined(CONFIG_NFS_V4_1)
6761 /*
6762 * Decode BIND_CONN_TO_SESSION response
6763 */
6764 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6765 struct xdr_stream *xdr,
6766 void *res)
6767 {
6768 struct compound_hdr hdr;
6769 int status;
6770
6771 status = decode_compound_hdr(xdr, &hdr);
6772 if (!status)
6773 status = decode_bind_conn_to_session(xdr, res);
6774 return status;
6775 }
6776
6777 /*
6778 * Decode EXCHANGE_ID response
6779 */
6780 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6781 struct xdr_stream *xdr,
6782 void *res)
6783 {
6784 struct compound_hdr hdr;
6785 int status;
6786
6787 status = decode_compound_hdr(xdr, &hdr);
6788 if (!status)
6789 status = decode_exchange_id(xdr, res);
6790 return status;
6791 }
6792
6793 /*
6794 * Decode CREATE_SESSION response
6795 */
6796 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6797 struct xdr_stream *xdr,
6798 struct nfs41_create_session_res *res)
6799 {
6800 struct compound_hdr hdr;
6801 int status;
6802
6803 status = decode_compound_hdr(xdr, &hdr);
6804 if (!status)
6805 status = decode_create_session(xdr, res);
6806 return status;
6807 }
6808
6809 /*
6810 * Decode DESTROY_SESSION response
6811 */
6812 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6813 struct xdr_stream *xdr,
6814 void *res)
6815 {
6816 struct compound_hdr hdr;
6817 int status;
6818
6819 status = decode_compound_hdr(xdr, &hdr);
6820 if (!status)
6821 status = decode_destroy_session(xdr, res);
6822 return status;
6823 }
6824
6825 /*
6826 * Decode DESTROY_CLIENTID response
6827 */
6828 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6829 struct xdr_stream *xdr,
6830 void *res)
6831 {
6832 struct compound_hdr hdr;
6833 int status;
6834
6835 status = decode_compound_hdr(xdr, &hdr);
6836 if (!status)
6837 status = decode_destroy_clientid(xdr, res);
6838 return status;
6839 }
6840
6841 /*
6842 * Decode SEQUENCE response
6843 */
6844 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6845 struct xdr_stream *xdr,
6846 struct nfs4_sequence_res *res)
6847 {
6848 struct compound_hdr hdr;
6849 int status;
6850
6851 status = decode_compound_hdr(xdr, &hdr);
6852 if (!status)
6853 status = decode_sequence(xdr, res, rqstp);
6854 return status;
6855 }
6856
6857 /*
6858 * Decode GET_LEASE_TIME response
6859 */
6860 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6861 struct xdr_stream *xdr,
6862 struct nfs4_get_lease_time_res *res)
6863 {
6864 struct compound_hdr hdr;
6865 int status;
6866
6867 status = decode_compound_hdr(xdr, &hdr);
6868 if (!status)
6869 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6870 if (!status)
6871 status = decode_putrootfh(xdr);
6872 if (!status)
6873 status = decode_fsinfo(xdr, res->lr_fsinfo);
6874 return status;
6875 }
6876
6877 /*
6878 * Decode RECLAIM_COMPLETE response
6879 */
6880 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6881 struct xdr_stream *xdr,
6882 struct nfs41_reclaim_complete_res *res)
6883 {
6884 struct compound_hdr hdr;
6885 int status;
6886
6887 status = decode_compound_hdr(xdr, &hdr);
6888 if (!status)
6889 status = decode_sequence(xdr, &res->seq_res, rqstp);
6890 if (!status)
6891 status = decode_reclaim_complete(xdr, (void *)NULL);
6892 return status;
6893 }
6894
6895 /*
6896 * Decode GETDEVICELIST response
6897 */
6898 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6899 struct xdr_stream *xdr,
6900 struct nfs4_getdevicelist_res *res)
6901 {
6902 struct compound_hdr hdr;
6903 int status;
6904
6905 dprintk("encoding getdevicelist!\n");
6906
6907 status = decode_compound_hdr(xdr, &hdr);
6908 if (status != 0)
6909 goto out;
6910 status = decode_sequence(xdr, &res->seq_res, rqstp);
6911 if (status != 0)
6912 goto out;
6913 status = decode_putfh(xdr);
6914 if (status != 0)
6915 goto out;
6916 status = decode_getdevicelist(xdr, res->devlist);
6917 out:
6918 return status;
6919 }
6920
6921 /*
6922 * Decode GETDEVINFO response
6923 */
6924 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6925 struct xdr_stream *xdr,
6926 struct nfs4_getdeviceinfo_res *res)
6927 {
6928 struct compound_hdr hdr;
6929 int status;
6930
6931 status = decode_compound_hdr(xdr, &hdr);
6932 if (status != 0)
6933 goto out;
6934 status = decode_sequence(xdr, &res->seq_res, rqstp);
6935 if (status != 0)
6936 goto out;
6937 status = decode_getdeviceinfo(xdr, res->pdev);
6938 out:
6939 return status;
6940 }
6941
6942 /*
6943 * Decode LAYOUTGET response
6944 */
6945 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6946 struct xdr_stream *xdr,
6947 struct nfs4_layoutget_res *res)
6948 {
6949 struct compound_hdr hdr;
6950 int status;
6951
6952 status = decode_compound_hdr(xdr, &hdr);
6953 if (status)
6954 goto out;
6955 status = decode_sequence(xdr, &res->seq_res, rqstp);
6956 if (status)
6957 goto out;
6958 status = decode_putfh(xdr);
6959 if (status)
6960 goto out;
6961 status = decode_layoutget(xdr, rqstp, res);
6962 out:
6963 return status;
6964 }
6965
6966 /*
6967 * Decode LAYOUTRETURN response
6968 */
6969 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6970 struct xdr_stream *xdr,
6971 struct nfs4_layoutreturn_res *res)
6972 {
6973 struct compound_hdr hdr;
6974 int status;
6975
6976 status = decode_compound_hdr(xdr, &hdr);
6977 if (status)
6978 goto out;
6979 status = decode_sequence(xdr, &res->seq_res, rqstp);
6980 if (status)
6981 goto out;
6982 status = decode_putfh(xdr);
6983 if (status)
6984 goto out;
6985 status = decode_layoutreturn(xdr, res);
6986 out:
6987 return status;
6988 }
6989
6990 /*
6991 * Decode LAYOUTCOMMIT response
6992 */
6993 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6994 struct xdr_stream *xdr,
6995 struct nfs4_layoutcommit_res *res)
6996 {
6997 struct compound_hdr hdr;
6998 int status;
6999
7000 status = decode_compound_hdr(xdr, &hdr);
7001 if (status)
7002 goto out;
7003 status = decode_sequence(xdr, &res->seq_res, rqstp);
7004 if (status)
7005 goto out;
7006 status = decode_putfh(xdr);
7007 if (status)
7008 goto out;
7009 status = decode_layoutcommit(xdr, rqstp, res);
7010 if (status)
7011 goto out;
7012 decode_getfattr(xdr, res->fattr, res->server);
7013 out:
7014 return status;
7015 }
7016
7017 /*
7018 * Decode SECINFO_NO_NAME response
7019 */
7020 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7021 struct xdr_stream *xdr,
7022 struct nfs4_secinfo_res *res)
7023 {
7024 struct compound_hdr hdr;
7025 int status;
7026
7027 status = decode_compound_hdr(xdr, &hdr);
7028 if (status)
7029 goto out;
7030 status = decode_sequence(xdr, &res->seq_res, rqstp);
7031 if (status)
7032 goto out;
7033 status = decode_putrootfh(xdr);
7034 if (status)
7035 goto out;
7036 status = decode_secinfo_no_name(xdr, res);
7037 out:
7038 return status;
7039 }
7040
7041 /*
7042 * Decode TEST_STATEID response
7043 */
7044 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7045 struct xdr_stream *xdr,
7046 struct nfs41_test_stateid_res *res)
7047 {
7048 struct compound_hdr hdr;
7049 int status;
7050
7051 status = decode_compound_hdr(xdr, &hdr);
7052 if (status)
7053 goto out;
7054 status = decode_sequence(xdr, &res->seq_res, rqstp);
7055 if (status)
7056 goto out;
7057 status = decode_test_stateid(xdr, res);
7058 out:
7059 return status;
7060 }
7061
7062 /*
7063 * Decode FREE_STATEID response
7064 */
7065 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7066 struct xdr_stream *xdr,
7067 struct nfs41_free_stateid_res *res)
7068 {
7069 struct compound_hdr hdr;
7070 int status;
7071
7072 status = decode_compound_hdr(xdr, &hdr);
7073 if (status)
7074 goto out;
7075 status = decode_sequence(xdr, &res->seq_res, rqstp);
7076 if (status)
7077 goto out;
7078 status = decode_free_stateid(xdr, res);
7079 out:
7080 return status;
7081 }
7082 #endif /* CONFIG_NFS_V4_1 */
7083
7084 /**
7085 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7086 * the local page cache.
7087 * @xdr: XDR stream where entry resides
7088 * @entry: buffer to fill in with entry data
7089 * @plus: boolean indicating whether this should be a readdirplus entry
7090 *
7091 * Returns zero if successful, otherwise a negative errno value is
7092 * returned.
7093 *
7094 * This function is not invoked during READDIR reply decoding, but
7095 * rather whenever an application invokes the getdents(2) system call
7096 * on a directory already in our cache.
7097 */
7098 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7099 int plus)
7100 {
7101 uint32_t bitmap[3] = {0};
7102 uint32_t len;
7103 __be32 *p = xdr_inline_decode(xdr, 4);
7104 if (unlikely(!p))
7105 goto out_overflow;
7106 if (*p == xdr_zero) {
7107 p = xdr_inline_decode(xdr, 4);
7108 if (unlikely(!p))
7109 goto out_overflow;
7110 if (*p == xdr_zero)
7111 return -EAGAIN;
7112 entry->eof = 1;
7113 return -EBADCOOKIE;
7114 }
7115
7116 p = xdr_inline_decode(xdr, 12);
7117 if (unlikely(!p))
7118 goto out_overflow;
7119 entry->prev_cookie = entry->cookie;
7120 p = xdr_decode_hyper(p, &entry->cookie);
7121 entry->len = be32_to_cpup(p);
7122
7123 p = xdr_inline_decode(xdr, entry->len);
7124 if (unlikely(!p))
7125 goto out_overflow;
7126 entry->name = (const char *) p;
7127
7128 /*
7129 * In case the server doesn't return an inode number,
7130 * we fake one here. (We don't use inode number 0,
7131 * since glibc seems to choke on it...)
7132 */
7133 entry->ino = 1;
7134 entry->fattr->valid = 0;
7135
7136 if (decode_attr_bitmap(xdr, bitmap) < 0)
7137 goto out_overflow;
7138
7139 if (decode_attr_length(xdr, &len, &p) < 0)
7140 goto out_overflow;
7141
7142 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7143 NULL, entry->server) < 0)
7144 goto out_overflow;
7145 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7146 entry->ino = entry->fattr->mounted_on_fileid;
7147 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7148 entry->ino = entry->fattr->fileid;
7149
7150 entry->d_type = DT_UNKNOWN;
7151 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7152 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7153
7154 return 0;
7155
7156 out_overflow:
7157 print_overflow_msg(__func__, xdr);
7158 return -EAGAIN;
7159 }
7160
7161 /*
7162 * We need to translate between nfs status return values and
7163 * the local errno values which may not be the same.
7164 */
7165 static struct {
7166 int stat;
7167 int errno;
7168 } nfs_errtbl[] = {
7169 { NFS4_OK, 0 },
7170 { NFS4ERR_PERM, -EPERM },
7171 { NFS4ERR_NOENT, -ENOENT },
7172 { NFS4ERR_IO, -errno_NFSERR_IO},
7173 { NFS4ERR_NXIO, -ENXIO },
7174 { NFS4ERR_ACCESS, -EACCES },
7175 { NFS4ERR_EXIST, -EEXIST },
7176 { NFS4ERR_XDEV, -EXDEV },
7177 { NFS4ERR_NOTDIR, -ENOTDIR },
7178 { NFS4ERR_ISDIR, -EISDIR },
7179 { NFS4ERR_INVAL, -EINVAL },
7180 { NFS4ERR_FBIG, -EFBIG },
7181 { NFS4ERR_NOSPC, -ENOSPC },
7182 { NFS4ERR_ROFS, -EROFS },
7183 { NFS4ERR_MLINK, -EMLINK },
7184 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7185 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7186 { NFS4ERR_DQUOT, -EDQUOT },
7187 { NFS4ERR_STALE, -ESTALE },
7188 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7189 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7190 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7191 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7192 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7193 { NFS4ERR_BADTYPE, -EBADTYPE },
7194 { NFS4ERR_LOCKED, -EAGAIN },
7195 { NFS4ERR_SYMLINK, -ELOOP },
7196 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7197 { NFS4ERR_DEADLOCK, -EDEADLK },
7198 { -1, -EIO }
7199 };
7200
7201 /*
7202 * Convert an NFS error code to a local one.
7203 * This one is used jointly by NFSv2 and NFSv3.
7204 */
7205 static int
7206 nfs4_stat_to_errno(int stat)
7207 {
7208 int i;
7209 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7210 if (nfs_errtbl[i].stat == stat)
7211 return nfs_errtbl[i].errno;
7212 }
7213 if (stat <= 10000 || stat > 10100) {
7214 /* The server is looney tunes. */
7215 return -EREMOTEIO;
7216 }
7217 /* If we cannot translate the error, the recovery routines should
7218 * handle it.
7219 * Note: remaining NFSv4 error codes have values > 10000, so should
7220 * not conflict with native Linux error codes.
7221 */
7222 return -stat;
7223 }
7224
7225 #define PROC(proc, argtype, restype) \
7226 [NFSPROC4_CLNT_##proc] = { \
7227 .p_proc = NFSPROC4_COMPOUND, \
7228 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7229 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7230 .p_arglen = NFS4_##argtype##_sz, \
7231 .p_replen = NFS4_##restype##_sz, \
7232 .p_statidx = NFSPROC4_CLNT_##proc, \
7233 .p_name = #proc, \
7234 }
7235
7236 struct rpc_procinfo nfs4_procedures[] = {
7237 PROC(READ, enc_read, dec_read),
7238 PROC(WRITE, enc_write, dec_write),
7239 PROC(COMMIT, enc_commit, dec_commit),
7240 PROC(OPEN, enc_open, dec_open),
7241 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7242 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7243 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7244 PROC(CLOSE, enc_close, dec_close),
7245 PROC(SETATTR, enc_setattr, dec_setattr),
7246 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7247 PROC(RENEW, enc_renew, dec_renew),
7248 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7249 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7250 PROC(LOCK, enc_lock, dec_lock),
7251 PROC(LOCKT, enc_lockt, dec_lockt),
7252 PROC(LOCKU, enc_locku, dec_locku),
7253 PROC(ACCESS, enc_access, dec_access),
7254 PROC(GETATTR, enc_getattr, dec_getattr),
7255 PROC(LOOKUP, enc_lookup, dec_lookup),
7256 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7257 PROC(REMOVE, enc_remove, dec_remove),
7258 PROC(RENAME, enc_rename, dec_rename),
7259 PROC(LINK, enc_link, dec_link),
7260 PROC(SYMLINK, enc_symlink, dec_symlink),
7261 PROC(CREATE, enc_create, dec_create),
7262 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7263 PROC(STATFS, enc_statfs, dec_statfs),
7264 PROC(READLINK, enc_readlink, dec_readlink),
7265 PROC(READDIR, enc_readdir, dec_readdir),
7266 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7267 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7268 PROC(GETACL, enc_getacl, dec_getacl),
7269 PROC(SETACL, enc_setacl, dec_setacl),
7270 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7271 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7272 PROC(SECINFO, enc_secinfo, dec_secinfo),
7273 #if defined(CONFIG_NFS_V4_1)
7274 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7275 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7276 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7277 PROC(SEQUENCE, enc_sequence, dec_sequence),
7278 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7279 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7280 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7281 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7282 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7283 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7284 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7285 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7286 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7287 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7288 PROC(BIND_CONN_TO_SESSION,
7289 enc_bind_conn_to_session, dec_bind_conn_to_session),
7290 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7291 #endif /* CONFIG_NFS_V4_1 */
7292 };
7293
7294 const struct rpc_version nfs_version4 = {
7295 .number = 4,
7296 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7297 .procs = nfs4_procedures
7298 };
7299
7300 /*
7301 * Local variables:
7302 * c-basic-offset: 8
7303 * End:
7304 */
Linux 2.6 libata-dev (mirror)