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NFS: Split out NFS v4 inode operations
[deliverable/linux.git] / fs / nfs / nfs4xdr.c
1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/in.h>
44 #include <linux/pagemap.h>
45 #include <linux/proc_fs.h>
46 #include <linux/kdev_t.h>
47 #include <linux/module.h>
48 #include <linux/utsname.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/sunrpc/msg_prot.h>
51 #include <linux/sunrpc/gss_api.h>
52 #include <linux/nfs.h>
53 #include <linux/nfs4.h>
54 #include <linux/nfs_fs.h>
55 #include <linux/nfs_idmap.h>
56
57 #include "nfs4_fs.h"
58 #include "internal.h"
59 #include "pnfs.h"
60 #include "netns.h"
61
62 #define NFSDBG_FACILITY NFSDBG_XDR
63
64 /* Mapping from NFS error code to "errno" error code. */
65 #define errno_NFSERR_IO EIO
66
67 static int nfs4_stat_to_errno(int);
68
69 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
70 #ifdef DEBUG
71 #define NFS4_MAXTAGLEN 20
72 #else
73 #define NFS4_MAXTAGLEN 0
74 #endif
75
76 /* lock,open owner id:
77 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
78 */
79 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
80 #define lock_owner_id_maxsz (1 + 1 + 4)
81 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
82 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
83 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84 #define op_encode_hdr_maxsz (1)
85 #define op_decode_hdr_maxsz (2)
86 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
87 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
89 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
91 (NFS4_FHSIZE >> 2))
92 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
93 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
94 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
95 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
96 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
97 ((3+NFS4_FHSIZE) >> 2))
98 #define nfs4_fattr_bitmap_maxsz 4
99 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
100 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
101 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
102 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
103 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104 /* We support only one layout type per file system */
105 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
106 /* This is based on getfattr, which uses the most attributes: */
107 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
108 3 + 3 + 3 + nfs4_owner_maxsz + \
109 nfs4_group_maxsz + decode_mdsthreshold_maxsz))
110 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
111 nfs4_fattr_value_maxsz)
112 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
113 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
114 1 + 2 + 1 + \
115 nfs4_owner_maxsz + \
116 nfs4_group_maxsz + \
117 4 + 4)
118 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
119 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
120 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
121 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
122 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
123 /* The 5 accounts for the PNFS attributes, and assumes that at most three
124 * layout types will be returned.
125 */
126 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
127 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
128 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
129 #define decode_renew_maxsz (op_decode_hdr_maxsz)
130 #define encode_setclientid_maxsz \
131 (op_encode_hdr_maxsz + \
132 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
133 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
134 1 /* sc_prog */ + \
135 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
136 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
137 1) /* sc_cb_ident */
138 #define decode_setclientid_maxsz \
139 (op_decode_hdr_maxsz + \
140 2 + \
141 1024) /* large value for CLID_INUSE */
142 #define encode_setclientid_confirm_maxsz \
143 (op_encode_hdr_maxsz + \
144 3 + (NFS4_VERIFIER_SIZE >> 2))
145 #define decode_setclientid_confirm_maxsz \
146 (op_decode_hdr_maxsz)
147 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
148 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
149 #define encode_share_access_maxsz \
150 (2)
151 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
152 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
153 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
154 #define encode_open_maxsz (op_encode_hdr_maxsz + \
155 2 + encode_share_access_maxsz + 2 + \
156 open_owner_id_maxsz + \
157 encode_opentype_maxsz + \
158 encode_claim_null_maxsz)
159 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
160 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
161 decode_ace_maxsz)
162 #define decode_change_info_maxsz (5)
163 #define decode_open_maxsz (op_decode_hdr_maxsz + \
164 decode_stateid_maxsz + \
165 decode_change_info_maxsz + 1 + \
166 nfs4_fattr_bitmap_maxsz + \
167 decode_delegation_maxsz)
168 #define encode_open_confirm_maxsz \
169 (op_encode_hdr_maxsz + \
170 encode_stateid_maxsz + 1)
171 #define decode_open_confirm_maxsz \
172 (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz)
174 #define encode_open_downgrade_maxsz \
175 (op_encode_hdr_maxsz + \
176 encode_stateid_maxsz + 1 + \
177 encode_share_access_maxsz)
178 #define decode_open_downgrade_maxsz \
179 (op_decode_hdr_maxsz + \
180 decode_stateid_maxsz)
181 #define encode_close_maxsz (op_encode_hdr_maxsz + \
182 1 + encode_stateid_maxsz)
183 #define decode_close_maxsz (op_decode_hdr_maxsz + \
184 decode_stateid_maxsz)
185 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
186 encode_stateid_maxsz + \
187 encode_attrs_maxsz)
188 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
189 nfs4_fattr_bitmap_maxsz)
190 #define encode_read_maxsz (op_encode_hdr_maxsz + \
191 encode_stateid_maxsz + 3)
192 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
193 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
194 2 + encode_verifier_maxsz + 5)
195 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
196 decode_verifier_maxsz)
197 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
198 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
199 #define encode_write_maxsz (op_encode_hdr_maxsz + \
200 encode_stateid_maxsz + 4)
201 #define decode_write_maxsz (op_decode_hdr_maxsz + \
202 2 + decode_verifier_maxsz)
203 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
204 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
205 decode_verifier_maxsz)
206 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
207 nfs4_name_maxsz)
208 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
209 decode_change_info_maxsz)
210 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
211 2 * nfs4_name_maxsz)
212 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
213 decode_change_info_maxsz + \
214 decode_change_info_maxsz)
215 #define encode_link_maxsz (op_encode_hdr_maxsz + \
216 nfs4_name_maxsz)
217 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
218 #define encode_lockowner_maxsz (7)
219 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
220 7 + \
221 1 + encode_stateid_maxsz + 1 + \
222 encode_lockowner_maxsz)
223 #define decode_lock_denied_maxsz \
224 (8 + decode_lockowner_maxsz)
225 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
226 decode_lock_denied_maxsz)
227 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
228 encode_lockowner_maxsz)
229 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
230 decode_lock_denied_maxsz)
231 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
232 encode_stateid_maxsz + \
233 4)
234 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
235 decode_stateid_maxsz)
236 #define encode_release_lockowner_maxsz \
237 (op_encode_hdr_maxsz + \
238 encode_lockowner_maxsz)
239 #define decode_release_lockowner_maxsz \
240 (op_decode_hdr_maxsz)
241 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
242 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
243 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
244 1 + nfs4_name_maxsz + \
245 1 + \
246 nfs4_fattr_maxsz)
247 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
248 #define encode_create_maxsz (op_encode_hdr_maxsz + \
249 1 + 2 + nfs4_name_maxsz + \
250 encode_attrs_maxsz)
251 #define decode_create_maxsz (op_decode_hdr_maxsz + \
252 decode_change_info_maxsz + \
253 nfs4_fattr_bitmap_maxsz)
254 #define encode_statfs_maxsz (encode_getattr_maxsz)
255 #define decode_statfs_maxsz (decode_getattr_maxsz)
256 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
257 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
258 #define encode_getacl_maxsz (encode_getattr_maxsz)
259 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
260 nfs4_fattr_bitmap_maxsz + 1)
261 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
262 encode_stateid_maxsz + 3)
263 #define decode_setacl_maxsz (decode_setattr_maxsz)
264 #define encode_fs_locations_maxsz \
265 (encode_getattr_maxsz)
266 #define decode_fs_locations_maxsz \
267 (0)
268 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
269 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
270
271 #if defined(CONFIG_NFS_V4_1)
272 #define NFS4_MAX_MACHINE_NAME_LEN (64)
273
274 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
275 encode_verifier_maxsz + \
276 1 /* co_ownerid.len */ + \
277 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
278 1 /* flags */ + \
279 1 /* spa_how */ + \
280 0 /* SP4_NONE (for now) */ + \
281 1 /* implementation id array of size 1 */ + \
282 1 /* nii_domain */ + \
283 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
284 1 /* nii_name */ + \
285 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
286 3 /* nii_date */)
287 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
288 2 /* eir_clientid */ + \
289 1 /* eir_sequenceid */ + \
290 1 /* eir_flags */ + \
291 1 /* spr_how */ + \
292 0 /* SP4_NONE (for now) */ + \
293 2 /* eir_server_owner.so_minor_id */ + \
294 /* eir_server_owner.so_major_id<> */ \
295 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
296 /* eir_server_scope<> */ \
297 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
298 1 /* eir_server_impl_id array length */ + \
299 1 /* nii_domain */ + \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
301 1 /* nii_name */ + \
302 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
303 3 /* nii_date */)
304 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
305 #define decode_channel_attrs_maxsz (6 + \
306 1 /* ca_rdma_ird.len */ + \
307 1 /* ca_rdma_ird */)
308 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
309 2 /* csa_clientid */ + \
310 1 /* csa_sequence */ + \
311 1 /* csa_flags */ + \
312 encode_channel_attrs_maxsz + \
313 encode_channel_attrs_maxsz + \
314 1 /* csa_cb_program */ + \
315 1 /* csa_sec_parms.len (1) */ + \
316 1 /* cb_secflavor (AUTH_SYS) */ + \
317 1 /* stamp */ + \
318 1 /* machinename.len */ + \
319 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
320 1 /* uid */ + \
321 1 /* gid */ + \
322 1 /* gids.len (0) */)
323 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
324 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
325 1 /* csr_sequence */ + \
326 1 /* csr_flags */ + \
327 decode_channel_attrs_maxsz + \
328 decode_channel_attrs_maxsz)
329 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
330 /* bctsa_sessid */ \
331 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
332 1 /* bctsa_dir */ + \
333 1 /* bctsa_use_conn_in_rdma_mode */)
334 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
335 /* bctsr_sessid */ \
336 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
337 1 /* bctsr_dir */ + \
338 1 /* bctsr_use_conn_in_rdma_mode */)
339 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
340 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
341 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
342 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
343 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
344 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
345 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
346 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
347 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
348 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
349 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
350 encode_verifier_maxsz)
351 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
352 2 /* nfs_cookie4 gdlr_cookie */ + \
353 decode_verifier_maxsz \
354 /* verifier4 gdlr_verifier */ + \
355 1 /* gdlr_deviceid_list count */ + \
356 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
357 NFS4_DEVICEID4_SIZE) \
358 /* gdlr_deviceid_list */ + \
359 1 /* bool gdlr_eof */)
360 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
361 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
362 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
363 1 /* layout type */ + \
364 1 /* opaque devaddr4 length */ + \
365 /* devaddr4 payload is read into page */ \
366 1 /* notification bitmap length */ + \
367 1 /* notification bitmap */)
368 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
369 encode_stateid_maxsz)
370 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
371 decode_stateid_maxsz + \
372 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
373 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
374 2 /* offset */ + \
375 2 /* length */ + \
376 1 /* reclaim */ + \
377 encode_stateid_maxsz + \
378 1 /* new offset (true) */ + \
379 2 /* last byte written */ + \
380 1 /* nt_timechanged (false) */ + \
381 1 /* layoutupdate4 layout type */ + \
382 1 /* NULL filelayout layoutupdate4 payload */)
383 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
384 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
385 encode_stateid_maxsz + \
386 1 /* FIXME: opaque lrf_body always empty at the moment */)
387 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
388 1 + decode_stateid_maxsz)
389 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
390 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
391 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
392 XDR_QUADLEN(NFS4_STATEID_SIZE))
393 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
394 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
395 XDR_QUADLEN(NFS4_STATEID_SIZE))
396 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
397 #else /* CONFIG_NFS_V4_1 */
398 #define encode_sequence_maxsz 0
399 #define decode_sequence_maxsz 0
400 #endif /* CONFIG_NFS_V4_1 */
401
402 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
403 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
404 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
405 encode_sequence_maxsz + \
406 encode_putfh_maxsz + \
407 encode_read_maxsz)
408 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
409 decode_sequence_maxsz + \
410 decode_putfh_maxsz + \
411 decode_read_maxsz)
412 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
413 encode_sequence_maxsz + \
414 encode_putfh_maxsz + \
415 encode_readlink_maxsz)
416 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
417 decode_sequence_maxsz + \
418 decode_putfh_maxsz + \
419 decode_readlink_maxsz)
420 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
421 encode_sequence_maxsz + \
422 encode_putfh_maxsz + \
423 encode_readdir_maxsz)
424 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
425 decode_sequence_maxsz + \
426 decode_putfh_maxsz + \
427 decode_readdir_maxsz)
428 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
429 encode_sequence_maxsz + \
430 encode_putfh_maxsz + \
431 encode_write_maxsz + \
432 encode_getattr_maxsz)
433 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
434 decode_sequence_maxsz + \
435 decode_putfh_maxsz + \
436 decode_write_maxsz + \
437 decode_getattr_maxsz)
438 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
439 encode_sequence_maxsz + \
440 encode_putfh_maxsz + \
441 encode_commit_maxsz)
442 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
443 decode_sequence_maxsz + \
444 decode_putfh_maxsz + \
445 decode_commit_maxsz)
446 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
447 encode_sequence_maxsz + \
448 encode_putfh_maxsz + \
449 encode_open_maxsz + \
450 encode_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 const u32 *open_bitmap,
1202 struct compound_hdr *hdr)
1203 {
1204 encode_getattr_three(xdr,
1205 bitmask[0] & open_bitmap[0],
1206 bitmask[1] & open_bitmap[1],
1207 bitmask[2] & open_bitmap[2],
1208 hdr);
1209 }
1210
1211 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1212 {
1213 encode_getattr_three(xdr,
1214 bitmask[0] & nfs4_fsinfo_bitmap[0],
1215 bitmask[1] & nfs4_fsinfo_bitmap[1],
1216 bitmask[2] & nfs4_fsinfo_bitmap[2],
1217 hdr);
1218 }
1219
1220 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1221 {
1222 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1223 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1224 }
1225
1226 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1227 {
1228 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1229 }
1230
1231 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1232 {
1233 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1234 encode_string(xdr, name->len, name->name);
1235 }
1236
1237 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1238 {
1239 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1240 return block ? NFS4_READW_LT : NFS4_READ_LT;
1241 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1242 }
1243
1244 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1245 {
1246 if (fl->fl_end == OFFSET_MAX)
1247 return ~(uint64_t)0;
1248 return fl->fl_end - fl->fl_start + 1;
1249 }
1250
1251 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1252 {
1253 __be32 *p;
1254
1255 p = reserve_space(xdr, 32);
1256 p = xdr_encode_hyper(p, lowner->clientid);
1257 *p++ = cpu_to_be32(20);
1258 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1259 *p++ = cpu_to_be32(lowner->s_dev);
1260 xdr_encode_hyper(p, lowner->id);
1261 }
1262
1263 /*
1264 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1265 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1266 */
1267 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1268 {
1269 __be32 *p;
1270
1271 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1272 p = reserve_space(xdr, 28);
1273 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1274 *p++ = cpu_to_be32(args->reclaim);
1275 p = xdr_encode_hyper(p, args->fl->fl_start);
1276 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1277 *p = cpu_to_be32(args->new_lock_owner);
1278 if (args->new_lock_owner){
1279 encode_nfs4_seqid(xdr, args->open_seqid);
1280 encode_nfs4_stateid(xdr, args->open_stateid);
1281 encode_nfs4_seqid(xdr, args->lock_seqid);
1282 encode_lockowner(xdr, &args->lock_owner);
1283 }
1284 else {
1285 encode_nfs4_stateid(xdr, args->lock_stateid);
1286 encode_nfs4_seqid(xdr, args->lock_seqid);
1287 }
1288 }
1289
1290 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1291 {
1292 __be32 *p;
1293
1294 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1295 p = reserve_space(xdr, 20);
1296 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1297 p = xdr_encode_hyper(p, args->fl->fl_start);
1298 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1299 encode_lockowner(xdr, &args->lock_owner);
1300 }
1301
1302 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1303 {
1304 __be32 *p;
1305
1306 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1307 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1308 encode_nfs4_seqid(xdr, args->seqid);
1309 encode_nfs4_stateid(xdr, args->stateid);
1310 p = reserve_space(xdr, 16);
1311 p = xdr_encode_hyper(p, args->fl->fl_start);
1312 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1313 }
1314
1315 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1316 {
1317 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1318 encode_lockowner(xdr, lowner);
1319 }
1320
1321 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1322 {
1323 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1324 encode_string(xdr, name->len, name->name);
1325 }
1326
1327 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1328 {
1329 __be32 *p;
1330
1331 p = reserve_space(xdr, 8);
1332 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1333 case FMODE_READ:
1334 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1335 break;
1336 case FMODE_WRITE:
1337 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1338 break;
1339 case FMODE_READ|FMODE_WRITE:
1340 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1341 break;
1342 default:
1343 *p++ = cpu_to_be32(0);
1344 }
1345 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1346 }
1347
1348 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1349 {
1350 __be32 *p;
1351 /*
1352 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1353 * owner 4 = 32
1354 */
1355 encode_nfs4_seqid(xdr, arg->seqid);
1356 encode_share_access(xdr, arg->fmode);
1357 p = reserve_space(xdr, 36);
1358 p = xdr_encode_hyper(p, arg->clientid);
1359 *p++ = cpu_to_be32(24);
1360 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1361 *p++ = cpu_to_be32(arg->server->s_dev);
1362 *p++ = cpu_to_be32(arg->id.uniquifier);
1363 xdr_encode_hyper(p, arg->id.create_time);
1364 }
1365
1366 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1367 {
1368 __be32 *p;
1369 struct nfs_client *clp;
1370
1371 p = reserve_space(xdr, 4);
1372 switch(arg->open_flags & O_EXCL) {
1373 case 0:
1374 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1375 encode_attrs(xdr, arg->u.attrs, arg->server);
1376 break;
1377 default:
1378 clp = arg->server->nfs_client;
1379 if (clp->cl_mvops->minor_version > 0) {
1380 if (nfs4_has_persistent_session(clp)) {
1381 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1382 encode_attrs(xdr, arg->u.attrs, arg->server);
1383 } else {
1384 struct iattr dummy;
1385
1386 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1387 encode_nfs4_verifier(xdr, &arg->u.verifier);
1388 dummy.ia_valid = 0;
1389 encode_attrs(xdr, &dummy, arg->server);
1390 }
1391 } else {
1392 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1393 encode_nfs4_verifier(xdr, &arg->u.verifier);
1394 }
1395 }
1396 }
1397
1398 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1399 {
1400 __be32 *p;
1401
1402 p = reserve_space(xdr, 4);
1403 switch (arg->open_flags & O_CREAT) {
1404 case 0:
1405 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1406 break;
1407 default:
1408 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1409 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1410 encode_createmode(xdr, arg);
1411 }
1412 }
1413
1414 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1415 {
1416 __be32 *p;
1417
1418 p = reserve_space(xdr, 4);
1419 switch (delegation_type) {
1420 case 0:
1421 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1422 break;
1423 case FMODE_READ:
1424 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1425 break;
1426 case FMODE_WRITE|FMODE_READ:
1427 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1428 break;
1429 default:
1430 BUG();
1431 }
1432 }
1433
1434 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1435 {
1436 __be32 *p;
1437
1438 p = reserve_space(xdr, 4);
1439 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1440 encode_string(xdr, name->len, name->name);
1441 }
1442
1443 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1444 {
1445 __be32 *p;
1446
1447 p = reserve_space(xdr, 4);
1448 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1449 encode_delegation_type(xdr, type);
1450 }
1451
1452 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1453 {
1454 __be32 *p;
1455
1456 p = reserve_space(xdr, 4);
1457 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1458 encode_nfs4_stateid(xdr, stateid);
1459 encode_string(xdr, name->len, name->name);
1460 }
1461
1462 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1463 {
1464 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1465 encode_openhdr(xdr, arg);
1466 encode_opentype(xdr, arg);
1467 switch (arg->claim) {
1468 case NFS4_OPEN_CLAIM_NULL:
1469 encode_claim_null(xdr, arg->name);
1470 break;
1471 case NFS4_OPEN_CLAIM_PREVIOUS:
1472 encode_claim_previous(xdr, arg->u.delegation_type);
1473 break;
1474 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1475 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1476 break;
1477 default:
1478 BUG();
1479 }
1480 }
1481
1482 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1483 {
1484 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1485 encode_nfs4_stateid(xdr, arg->stateid);
1486 encode_nfs4_seqid(xdr, arg->seqid);
1487 }
1488
1489 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1490 {
1491 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1492 encode_nfs4_stateid(xdr, arg->stateid);
1493 encode_nfs4_seqid(xdr, arg->seqid);
1494 encode_share_access(xdr, arg->fmode);
1495 }
1496
1497 static void
1498 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1499 {
1500 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1501 encode_string(xdr, fh->size, fh->data);
1502 }
1503
1504 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1505 {
1506 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1507 }
1508
1509 static void encode_open_stateid(struct xdr_stream *xdr,
1510 const struct nfs_open_context *ctx,
1511 const struct nfs_lock_context *l_ctx,
1512 fmode_t fmode,
1513 int zero_seqid)
1514 {
1515 nfs4_stateid stateid;
1516
1517 if (ctx->state != NULL) {
1518 nfs4_select_rw_stateid(&stateid, ctx->state,
1519 fmode, l_ctx->lockowner, l_ctx->pid);
1520 if (zero_seqid)
1521 stateid.seqid = 0;
1522 encode_nfs4_stateid(xdr, &stateid);
1523 } else
1524 encode_nfs4_stateid(xdr, &zero_stateid);
1525 }
1526
1527 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1528 {
1529 __be32 *p;
1530
1531 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1532 encode_open_stateid(xdr, args->context, args->lock_context,
1533 FMODE_READ, hdr->minorversion);
1534
1535 p = reserve_space(xdr, 12);
1536 p = xdr_encode_hyper(p, args->offset);
1537 *p = cpu_to_be32(args->count);
1538 }
1539
1540 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1541 {
1542 uint32_t attrs[2] = {
1543 FATTR4_WORD0_RDATTR_ERROR,
1544 FATTR4_WORD1_MOUNTED_ON_FILEID,
1545 };
1546 uint32_t dircount = readdir->count >> 1;
1547 __be32 *p, verf[2];
1548
1549 if (readdir->plus) {
1550 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1551 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1552 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1553 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1554 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1555 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1556 dircount >>= 1;
1557 }
1558 /* Use mounted_on_fileid only if the server supports it */
1559 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1560 attrs[0] |= FATTR4_WORD0_FILEID;
1561
1562 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1563 encode_uint64(xdr, readdir->cookie);
1564 encode_nfs4_verifier(xdr, &readdir->verifier);
1565 p = reserve_space(xdr, 20);
1566 *p++ = cpu_to_be32(dircount);
1567 *p++ = cpu_to_be32(readdir->count);
1568 *p++ = cpu_to_be32(2);
1569
1570 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1571 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1572 memcpy(verf, readdir->verifier.data, sizeof(verf));
1573 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1574 __func__,
1575 (unsigned long long)readdir->cookie,
1576 verf[0], verf[1],
1577 attrs[0] & readdir->bitmask[0],
1578 attrs[1] & readdir->bitmask[1]);
1579 }
1580
1581 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1582 {
1583 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1584 }
1585
1586 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1587 {
1588 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1589 encode_string(xdr, name->len, name->name);
1590 }
1591
1592 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1593 {
1594 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1595 encode_string(xdr, oldname->len, oldname->name);
1596 encode_string(xdr, newname->len, newname->name);
1597 }
1598
1599 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1600 struct compound_hdr *hdr)
1601 {
1602 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1603 encode_uint64(xdr, clid);
1604 }
1605
1606 static void
1607 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1608 {
1609 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1610 }
1611
1612 static void
1613 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1614 {
1615 __be32 *p;
1616
1617 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1618 encode_nfs4_stateid(xdr, &zero_stateid);
1619 p = reserve_space(xdr, 2*4);
1620 *p++ = cpu_to_be32(1);
1621 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1622 BUG_ON(arg->acl_len % 4);
1623 p = reserve_space(xdr, 4);
1624 *p = cpu_to_be32(arg->acl_len);
1625 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1626 }
1627
1628 static void
1629 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1630 {
1631 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1632 }
1633
1634 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1635 {
1636 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1637 encode_nfs4_stateid(xdr, &arg->stateid);
1638 encode_attrs(xdr, arg->iap, server);
1639 }
1640
1641 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1642 {
1643 __be32 *p;
1644
1645 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1646 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1647
1648 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1649 p = reserve_space(xdr, 4);
1650 *p = cpu_to_be32(setclientid->sc_prog);
1651 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1652 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1653 p = reserve_space(xdr, 4);
1654 *p = cpu_to_be32(setclientid->sc_cb_ident);
1655 }
1656
1657 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1658 {
1659 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1660 decode_setclientid_confirm_maxsz, hdr);
1661 encode_uint64(xdr, arg->clientid);
1662 encode_nfs4_verifier(xdr, &arg->confirm);
1663 }
1664
1665 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1666 {
1667 __be32 *p;
1668
1669 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1670 encode_open_stateid(xdr, args->context, args->lock_context,
1671 FMODE_WRITE, hdr->minorversion);
1672
1673 p = reserve_space(xdr, 16);
1674 p = xdr_encode_hyper(p, args->offset);
1675 *p++ = cpu_to_be32(args->stable);
1676 *p = cpu_to_be32(args->count);
1677
1678 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1679 }
1680
1681 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1682 {
1683 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1684 encode_nfs4_stateid(xdr, stateid);
1685 }
1686
1687 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1688 {
1689 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1690 encode_string(xdr, name->len, name->name);
1691 }
1692
1693 #if defined(CONFIG_NFS_V4_1)
1694 /* NFSv4.1 operations */
1695 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1696 struct nfs4_session *session,
1697 struct compound_hdr *hdr)
1698 {
1699 __be32 *p;
1700
1701 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1702 decode_bind_conn_to_session_maxsz, hdr);
1703 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1704 p = xdr_reserve_space(xdr, 8);
1705 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1706 *p = 0; /* use_conn_in_rdma_mode = False */
1707 }
1708
1709 static void encode_exchange_id(struct xdr_stream *xdr,
1710 struct nfs41_exchange_id_args *args,
1711 struct compound_hdr *hdr)
1712 {
1713 __be32 *p;
1714 char impl_name[NFS4_OPAQUE_LIMIT];
1715 int len = 0;
1716
1717 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1718 encode_nfs4_verifier(xdr, args->verifier);
1719
1720 encode_string(xdr, args->id_len, args->id);
1721
1722 p = reserve_space(xdr, 12);
1723 *p++ = cpu_to_be32(args->flags);
1724 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1725
1726 if (send_implementation_id &&
1727 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1728 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1729 <= NFS4_OPAQUE_LIMIT + 1)
1730 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1731 utsname()->sysname, utsname()->release,
1732 utsname()->version, utsname()->machine);
1733
1734 if (len > 0) {
1735 *p = cpu_to_be32(1); /* implementation id array length=1 */
1736
1737 encode_string(xdr,
1738 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1739 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1740 encode_string(xdr, len, impl_name);
1741 /* just send zeros for nii_date - the date is in nii_name */
1742 p = reserve_space(xdr, 12);
1743 p = xdr_encode_hyper(p, 0);
1744 *p = cpu_to_be32(0);
1745 } else
1746 *p = cpu_to_be32(0); /* implementation id array length=0 */
1747 }
1748
1749 static void encode_create_session(struct xdr_stream *xdr,
1750 struct nfs41_create_session_args *args,
1751 struct compound_hdr *hdr)
1752 {
1753 __be32 *p;
1754 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1755 uint32_t len;
1756 struct nfs_client *clp = args->client;
1757 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1758 u32 max_resp_sz_cached;
1759
1760 /*
1761 * Assumes OPEN is the biggest non-idempotent compound.
1762 * 2 is the verifier.
1763 */
1764 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1765 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1766
1767 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1768 clp->cl_ipaddr);
1769
1770 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1771 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1772 p = xdr_encode_hyper(p, clp->cl_clientid);
1773 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1774 *p++ = cpu_to_be32(args->flags); /*flags */
1775
1776 /* Fore Channel */
1777 *p++ = cpu_to_be32(0); /* header padding size */
1778 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1779 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1780 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1781 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1782 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1783 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1784
1785 /* Back Channel */
1786 *p++ = cpu_to_be32(0); /* header padding size */
1787 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1788 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1789 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1790 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1791 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1792 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1793
1794 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1795 *p++ = cpu_to_be32(1);
1796 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1797
1798 /* authsys_parms rfc1831 */
1799 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1800 p = xdr_encode_opaque(p, machine_name, len);
1801 *p++ = cpu_to_be32(0); /* UID */
1802 *p++ = cpu_to_be32(0); /* GID */
1803 *p = cpu_to_be32(0); /* No more gids */
1804 }
1805
1806 static void encode_destroy_session(struct xdr_stream *xdr,
1807 struct nfs4_session *session,
1808 struct compound_hdr *hdr)
1809 {
1810 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1811 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1812 }
1813
1814 static void encode_destroy_clientid(struct xdr_stream *xdr,
1815 uint64_t clientid,
1816 struct compound_hdr *hdr)
1817 {
1818 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1819 encode_uint64(xdr, clientid);
1820 }
1821
1822 static void encode_reclaim_complete(struct xdr_stream *xdr,
1823 struct nfs41_reclaim_complete_args *args,
1824 struct compound_hdr *hdr)
1825 {
1826 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1827 encode_uint32(xdr, args->one_fs);
1828 }
1829 #endif /* CONFIG_NFS_V4_1 */
1830
1831 static void encode_sequence(struct xdr_stream *xdr,
1832 const struct nfs4_sequence_args *args,
1833 struct compound_hdr *hdr)
1834 {
1835 #if defined(CONFIG_NFS_V4_1)
1836 struct nfs4_session *session = args->sa_session;
1837 struct nfs4_slot_table *tp;
1838 struct nfs4_slot *slot;
1839 __be32 *p;
1840
1841 if (!session)
1842 return;
1843
1844 tp = &session->fc_slot_table;
1845
1846 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1847 slot = tp->slots + args->sa_slotid;
1848
1849 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1850
1851 /*
1852 * Sessionid + seqid + slotid + max slotid + cache_this
1853 */
1854 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1855 "max_slotid=%d cache_this=%d\n",
1856 __func__,
1857 ((u32 *)session->sess_id.data)[0],
1858 ((u32 *)session->sess_id.data)[1],
1859 ((u32 *)session->sess_id.data)[2],
1860 ((u32 *)session->sess_id.data)[3],
1861 slot->seq_nr, args->sa_slotid,
1862 tp->highest_used_slotid, args->sa_cache_this);
1863 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1864 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1865 *p++ = cpu_to_be32(slot->seq_nr);
1866 *p++ = cpu_to_be32(args->sa_slotid);
1867 *p++ = cpu_to_be32(tp->highest_used_slotid);
1868 *p = cpu_to_be32(args->sa_cache_this);
1869 #endif /* CONFIG_NFS_V4_1 */
1870 }
1871
1872 #ifdef CONFIG_NFS_V4_1
1873 static void
1874 encode_getdevicelist(struct xdr_stream *xdr,
1875 const struct nfs4_getdevicelist_args *args,
1876 struct compound_hdr *hdr)
1877 {
1878 __be32 *p;
1879 nfs4_verifier dummy = {
1880 .data = "dummmmmy",
1881 };
1882
1883 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1884 p = reserve_space(xdr, 16);
1885 *p++ = cpu_to_be32(args->layoutclass);
1886 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1887 xdr_encode_hyper(p, 0ULL); /* cookie */
1888 encode_nfs4_verifier(xdr, &dummy);
1889 }
1890
1891 static void
1892 encode_getdeviceinfo(struct xdr_stream *xdr,
1893 const struct nfs4_getdeviceinfo_args *args,
1894 struct compound_hdr *hdr)
1895 {
1896 __be32 *p;
1897
1898 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1899 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1900 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1901 NFS4_DEVICEID4_SIZE);
1902 *p++ = cpu_to_be32(args->pdev->layout_type);
1903 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1904 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1905 }
1906
1907 static void
1908 encode_layoutget(struct xdr_stream *xdr,
1909 const struct nfs4_layoutget_args *args,
1910 struct compound_hdr *hdr)
1911 {
1912 __be32 *p;
1913
1914 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1915 p = reserve_space(xdr, 36);
1916 *p++ = cpu_to_be32(0); /* Signal layout available */
1917 *p++ = cpu_to_be32(args->type);
1918 *p++ = cpu_to_be32(args->range.iomode);
1919 p = xdr_encode_hyper(p, args->range.offset);
1920 p = xdr_encode_hyper(p, args->range.length);
1921 p = xdr_encode_hyper(p, args->minlength);
1922 encode_nfs4_stateid(xdr, &args->stateid);
1923 encode_uint32(xdr, args->maxcount);
1924
1925 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1926 __func__,
1927 args->type,
1928 args->range.iomode,
1929 (unsigned long)args->range.offset,
1930 (unsigned long)args->range.length,
1931 args->maxcount);
1932 }
1933
1934 static int
1935 encode_layoutcommit(struct xdr_stream *xdr,
1936 struct inode *inode,
1937 const struct nfs4_layoutcommit_args *args,
1938 struct compound_hdr *hdr)
1939 {
1940 __be32 *p;
1941
1942 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1943 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1944
1945 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1946 p = reserve_space(xdr, 20);
1947 /* Only whole file layouts */
1948 p = xdr_encode_hyper(p, 0); /* offset */
1949 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1950 *p = cpu_to_be32(0); /* reclaim */
1951 encode_nfs4_stateid(xdr, &args->stateid);
1952 p = reserve_space(xdr, 20);
1953 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1954 p = xdr_encode_hyper(p, args->lastbytewritten);
1955 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1956 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1957
1958 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1959 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1960 NFS_I(inode)->layout, xdr, args);
1961 else
1962 encode_uint32(xdr, 0); /* no layout-type payload */
1963
1964 return 0;
1965 }
1966
1967 static void
1968 encode_layoutreturn(struct xdr_stream *xdr,
1969 const struct nfs4_layoutreturn_args *args,
1970 struct compound_hdr *hdr)
1971 {
1972 __be32 *p;
1973
1974 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1975 p = reserve_space(xdr, 16);
1976 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1977 *p++ = cpu_to_be32(args->layout_type);
1978 *p++ = cpu_to_be32(IOMODE_ANY);
1979 *p = cpu_to_be32(RETURN_FILE);
1980 p = reserve_space(xdr, 16);
1981 p = xdr_encode_hyper(p, 0);
1982 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1983 spin_lock(&args->inode->i_lock);
1984 encode_nfs4_stateid(xdr, &args->stateid);
1985 spin_unlock(&args->inode->i_lock);
1986 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1987 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1988 NFS_I(args->inode)->layout, xdr, args);
1989 } else
1990 encode_uint32(xdr, 0);
1991 }
1992
1993 static int
1994 encode_secinfo_no_name(struct xdr_stream *xdr,
1995 const struct nfs41_secinfo_no_name_args *args,
1996 struct compound_hdr *hdr)
1997 {
1998 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
1999 encode_uint32(xdr, args->style);
2000 return 0;
2001 }
2002
2003 static void encode_test_stateid(struct xdr_stream *xdr,
2004 struct nfs41_test_stateid_args *args,
2005 struct compound_hdr *hdr)
2006 {
2007 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2008 encode_uint32(xdr, 1);
2009 encode_nfs4_stateid(xdr, args->stateid);
2010 }
2011
2012 static void encode_free_stateid(struct xdr_stream *xdr,
2013 struct nfs41_free_stateid_args *args,
2014 struct compound_hdr *hdr)
2015 {
2016 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2017 encode_nfs4_stateid(xdr, args->stateid);
2018 }
2019 #endif /* CONFIG_NFS_V4_1 */
2020
2021 /*
2022 * END OF "GENERIC" ENCODE ROUTINES.
2023 */
2024
2025 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2026 {
2027 #if defined(CONFIG_NFS_V4_1)
2028 if (args->sa_session)
2029 return args->sa_session->clp->cl_mvops->minor_version;
2030 #endif /* CONFIG_NFS_V4_1 */
2031 return 0;
2032 }
2033
2034 /*
2035 * Encode an ACCESS request
2036 */
2037 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2038 const struct nfs4_accessargs *args)
2039 {
2040 struct compound_hdr hdr = {
2041 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2042 };
2043
2044 encode_compound_hdr(xdr, req, &hdr);
2045 encode_sequence(xdr, &args->seq_args, &hdr);
2046 encode_putfh(xdr, args->fh, &hdr);
2047 encode_access(xdr, args->access, &hdr);
2048 encode_getfattr(xdr, args->bitmask, &hdr);
2049 encode_nops(&hdr);
2050 }
2051
2052 /*
2053 * Encode LOOKUP request
2054 */
2055 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2056 const struct nfs4_lookup_arg *args)
2057 {
2058 struct compound_hdr hdr = {
2059 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2060 };
2061
2062 encode_compound_hdr(xdr, req, &hdr);
2063 encode_sequence(xdr, &args->seq_args, &hdr);
2064 encode_putfh(xdr, args->dir_fh, &hdr);
2065 encode_lookup(xdr, args->name, &hdr);
2066 encode_getfh(xdr, &hdr);
2067 encode_getfattr(xdr, args->bitmask, &hdr);
2068 encode_nops(&hdr);
2069 }
2070
2071 /*
2072 * Encode LOOKUP_ROOT request
2073 */
2074 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2075 struct xdr_stream *xdr,
2076 const struct nfs4_lookup_root_arg *args)
2077 {
2078 struct compound_hdr hdr = {
2079 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2080 };
2081
2082 encode_compound_hdr(xdr, req, &hdr);
2083 encode_sequence(xdr, &args->seq_args, &hdr);
2084 encode_putrootfh(xdr, &hdr);
2085 encode_getfh(xdr, &hdr);
2086 encode_getfattr(xdr, args->bitmask, &hdr);
2087 encode_nops(&hdr);
2088 }
2089
2090 /*
2091 * Encode REMOVE request
2092 */
2093 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2094 const struct nfs_removeargs *args)
2095 {
2096 struct compound_hdr hdr = {
2097 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2098 };
2099
2100 encode_compound_hdr(xdr, req, &hdr);
2101 encode_sequence(xdr, &args->seq_args, &hdr);
2102 encode_putfh(xdr, args->fh, &hdr);
2103 encode_remove(xdr, &args->name, &hdr);
2104 encode_nops(&hdr);
2105 }
2106
2107 /*
2108 * Encode RENAME request
2109 */
2110 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2111 const struct nfs_renameargs *args)
2112 {
2113 struct compound_hdr hdr = {
2114 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2115 };
2116
2117 encode_compound_hdr(xdr, req, &hdr);
2118 encode_sequence(xdr, &args->seq_args, &hdr);
2119 encode_putfh(xdr, args->old_dir, &hdr);
2120 encode_savefh(xdr, &hdr);
2121 encode_putfh(xdr, args->new_dir, &hdr);
2122 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2123 encode_nops(&hdr);
2124 }
2125
2126 /*
2127 * Encode LINK request
2128 */
2129 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2130 const struct nfs4_link_arg *args)
2131 {
2132 struct compound_hdr hdr = {
2133 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2134 };
2135
2136 encode_compound_hdr(xdr, req, &hdr);
2137 encode_sequence(xdr, &args->seq_args, &hdr);
2138 encode_putfh(xdr, args->fh, &hdr);
2139 encode_savefh(xdr, &hdr);
2140 encode_putfh(xdr, args->dir_fh, &hdr);
2141 encode_link(xdr, args->name, &hdr);
2142 encode_restorefh(xdr, &hdr);
2143 encode_getfattr(xdr, args->bitmask, &hdr);
2144 encode_nops(&hdr);
2145 }
2146
2147 /*
2148 * Encode CREATE request
2149 */
2150 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2151 const struct nfs4_create_arg *args)
2152 {
2153 struct compound_hdr hdr = {
2154 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2155 };
2156
2157 encode_compound_hdr(xdr, req, &hdr);
2158 encode_sequence(xdr, &args->seq_args, &hdr);
2159 encode_putfh(xdr, args->dir_fh, &hdr);
2160 encode_create(xdr, args, &hdr);
2161 encode_getfh(xdr, &hdr);
2162 encode_getfattr(xdr, args->bitmask, &hdr);
2163 encode_nops(&hdr);
2164 }
2165
2166 /*
2167 * Encode SYMLINK request
2168 */
2169 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2170 const struct nfs4_create_arg *args)
2171 {
2172 nfs4_xdr_enc_create(req, xdr, args);
2173 }
2174
2175 /*
2176 * Encode GETATTR request
2177 */
2178 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2179 const struct nfs4_getattr_arg *args)
2180 {
2181 struct compound_hdr hdr = {
2182 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2183 };
2184
2185 encode_compound_hdr(xdr, req, &hdr);
2186 encode_sequence(xdr, &args->seq_args, &hdr);
2187 encode_putfh(xdr, args->fh, &hdr);
2188 encode_getfattr(xdr, args->bitmask, &hdr);
2189 encode_nops(&hdr);
2190 }
2191
2192 /*
2193 * Encode a CLOSE request
2194 */
2195 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2196 struct nfs_closeargs *args)
2197 {
2198 struct compound_hdr hdr = {
2199 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2200 };
2201
2202 encode_compound_hdr(xdr, req, &hdr);
2203 encode_sequence(xdr, &args->seq_args, &hdr);
2204 encode_putfh(xdr, args->fh, &hdr);
2205 encode_close(xdr, args, &hdr);
2206 encode_getfattr(xdr, args->bitmask, &hdr);
2207 encode_nops(&hdr);
2208 }
2209
2210 /*
2211 * Encode an OPEN request
2212 */
2213 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2214 struct nfs_openargs *args)
2215 {
2216 struct compound_hdr hdr = {
2217 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2218 };
2219
2220 encode_compound_hdr(xdr, req, &hdr);
2221 encode_sequence(xdr, &args->seq_args, &hdr);
2222 encode_putfh(xdr, args->fh, &hdr);
2223 encode_open(xdr, args, &hdr);
2224 encode_getfh(xdr, &hdr);
2225 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2226 encode_nops(&hdr);
2227 }
2228
2229 /*
2230 * Encode an OPEN_CONFIRM request
2231 */
2232 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2233 struct xdr_stream *xdr,
2234 struct nfs_open_confirmargs *args)
2235 {
2236 struct compound_hdr hdr = {
2237 .nops = 0,
2238 };
2239
2240 encode_compound_hdr(xdr, req, &hdr);
2241 encode_putfh(xdr, args->fh, &hdr);
2242 encode_open_confirm(xdr, args, &hdr);
2243 encode_nops(&hdr);
2244 }
2245
2246 /*
2247 * Encode an OPEN request with no attributes.
2248 */
2249 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2250 struct xdr_stream *xdr,
2251 struct nfs_openargs *args)
2252 {
2253 struct compound_hdr hdr = {
2254 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2255 };
2256
2257 encode_compound_hdr(xdr, req, &hdr);
2258 encode_sequence(xdr, &args->seq_args, &hdr);
2259 encode_putfh(xdr, args->fh, &hdr);
2260 encode_open(xdr, args, &hdr);
2261 encode_getfattr(xdr, args->bitmask, &hdr);
2262 encode_nops(&hdr);
2263 }
2264
2265 /*
2266 * Encode an OPEN_DOWNGRADE request
2267 */
2268 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2269 struct xdr_stream *xdr,
2270 struct nfs_closeargs *args)
2271 {
2272 struct compound_hdr hdr = {
2273 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2274 };
2275
2276 encode_compound_hdr(xdr, req, &hdr);
2277 encode_sequence(xdr, &args->seq_args, &hdr);
2278 encode_putfh(xdr, args->fh, &hdr);
2279 encode_open_downgrade(xdr, args, &hdr);
2280 encode_getfattr(xdr, args->bitmask, &hdr);
2281 encode_nops(&hdr);
2282 }
2283
2284 /*
2285 * Encode a LOCK request
2286 */
2287 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2288 struct nfs_lock_args *args)
2289 {
2290 struct compound_hdr hdr = {
2291 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2292 };
2293
2294 encode_compound_hdr(xdr, req, &hdr);
2295 encode_sequence(xdr, &args->seq_args, &hdr);
2296 encode_putfh(xdr, args->fh, &hdr);
2297 encode_lock(xdr, args, &hdr);
2298 encode_nops(&hdr);
2299 }
2300
2301 /*
2302 * Encode a LOCKT request
2303 */
2304 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2305 struct nfs_lockt_args *args)
2306 {
2307 struct compound_hdr hdr = {
2308 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2309 };
2310
2311 encode_compound_hdr(xdr, req, &hdr);
2312 encode_sequence(xdr, &args->seq_args, &hdr);
2313 encode_putfh(xdr, args->fh, &hdr);
2314 encode_lockt(xdr, args, &hdr);
2315 encode_nops(&hdr);
2316 }
2317
2318 /*
2319 * Encode a LOCKU request
2320 */
2321 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2322 struct nfs_locku_args *args)
2323 {
2324 struct compound_hdr hdr = {
2325 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2326 };
2327
2328 encode_compound_hdr(xdr, req, &hdr);
2329 encode_sequence(xdr, &args->seq_args, &hdr);
2330 encode_putfh(xdr, args->fh, &hdr);
2331 encode_locku(xdr, args, &hdr);
2332 encode_nops(&hdr);
2333 }
2334
2335 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2336 struct xdr_stream *xdr,
2337 struct nfs_release_lockowner_args *args)
2338 {
2339 struct compound_hdr hdr = {
2340 .minorversion = 0,
2341 };
2342
2343 encode_compound_hdr(xdr, req, &hdr);
2344 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2345 encode_nops(&hdr);
2346 }
2347
2348 /*
2349 * Encode a READLINK request
2350 */
2351 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2352 const struct nfs4_readlink *args)
2353 {
2354 struct compound_hdr hdr = {
2355 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2356 };
2357
2358 encode_compound_hdr(xdr, req, &hdr);
2359 encode_sequence(xdr, &args->seq_args, &hdr);
2360 encode_putfh(xdr, args->fh, &hdr);
2361 encode_readlink(xdr, args, req, &hdr);
2362
2363 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2364 args->pgbase, args->pglen);
2365 encode_nops(&hdr);
2366 }
2367
2368 /*
2369 * Encode a READDIR request
2370 */
2371 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2372 const struct nfs4_readdir_arg *args)
2373 {
2374 struct compound_hdr hdr = {
2375 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2376 };
2377
2378 encode_compound_hdr(xdr, req, &hdr);
2379 encode_sequence(xdr, &args->seq_args, &hdr);
2380 encode_putfh(xdr, args->fh, &hdr);
2381 encode_readdir(xdr, args, req, &hdr);
2382
2383 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2384 args->pgbase, args->count);
2385 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2386 __func__, hdr.replen << 2, args->pages,
2387 args->pgbase, args->count);
2388 encode_nops(&hdr);
2389 }
2390
2391 /*
2392 * Encode a READ request
2393 */
2394 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2395 struct nfs_readargs *args)
2396 {
2397 struct compound_hdr hdr = {
2398 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2399 };
2400
2401 encode_compound_hdr(xdr, req, &hdr);
2402 encode_sequence(xdr, &args->seq_args, &hdr);
2403 encode_putfh(xdr, args->fh, &hdr);
2404 encode_read(xdr, args, &hdr);
2405
2406 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2407 args->pages, args->pgbase, args->count);
2408 req->rq_rcv_buf.flags |= XDRBUF_READ;
2409 encode_nops(&hdr);
2410 }
2411
2412 /*
2413 * Encode an SETATTR request
2414 */
2415 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2416 struct nfs_setattrargs *args)
2417 {
2418 struct compound_hdr hdr = {
2419 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2420 };
2421
2422 encode_compound_hdr(xdr, req, &hdr);
2423 encode_sequence(xdr, &args->seq_args, &hdr);
2424 encode_putfh(xdr, args->fh, &hdr);
2425 encode_setattr(xdr, args, args->server, &hdr);
2426 encode_getfattr(xdr, args->bitmask, &hdr);
2427 encode_nops(&hdr);
2428 }
2429
2430 /*
2431 * Encode a GETACL request
2432 */
2433 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2434 struct nfs_getaclargs *args)
2435 {
2436 struct compound_hdr hdr = {
2437 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2438 };
2439 uint32_t replen;
2440
2441 encode_compound_hdr(xdr, req, &hdr);
2442 encode_sequence(xdr, &args->seq_args, &hdr);
2443 encode_putfh(xdr, args->fh, &hdr);
2444 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2445 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2446
2447 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2448 args->acl_pages, args->acl_pgbase, args->acl_len);
2449
2450 encode_nops(&hdr);
2451 }
2452
2453 /*
2454 * Encode a WRITE request
2455 */
2456 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2457 struct nfs_writeargs *args)
2458 {
2459 struct compound_hdr hdr = {
2460 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2461 };
2462
2463 encode_compound_hdr(xdr, req, &hdr);
2464 encode_sequence(xdr, &args->seq_args, &hdr);
2465 encode_putfh(xdr, args->fh, &hdr);
2466 encode_write(xdr, args, &hdr);
2467 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2468 if (args->bitmask)
2469 encode_getfattr(xdr, args->bitmask, &hdr);
2470 encode_nops(&hdr);
2471 }
2472
2473 /*
2474 * a COMMIT request
2475 */
2476 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2477 struct nfs_commitargs *args)
2478 {
2479 struct compound_hdr hdr = {
2480 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2481 };
2482
2483 encode_compound_hdr(xdr, req, &hdr);
2484 encode_sequence(xdr, &args->seq_args, &hdr);
2485 encode_putfh(xdr, args->fh, &hdr);
2486 encode_commit(xdr, args, &hdr);
2487 encode_nops(&hdr);
2488 }
2489
2490 /*
2491 * FSINFO request
2492 */
2493 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2494 struct nfs4_fsinfo_arg *args)
2495 {
2496 struct compound_hdr hdr = {
2497 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2498 };
2499
2500 encode_compound_hdr(xdr, req, &hdr);
2501 encode_sequence(xdr, &args->seq_args, &hdr);
2502 encode_putfh(xdr, args->fh, &hdr);
2503 encode_fsinfo(xdr, args->bitmask, &hdr);
2504 encode_nops(&hdr);
2505 }
2506
2507 /*
2508 * a PATHCONF request
2509 */
2510 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2511 const struct nfs4_pathconf_arg *args)
2512 {
2513 struct compound_hdr hdr = {
2514 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2515 };
2516
2517 encode_compound_hdr(xdr, req, &hdr);
2518 encode_sequence(xdr, &args->seq_args, &hdr);
2519 encode_putfh(xdr, args->fh, &hdr);
2520 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2521 &hdr);
2522 encode_nops(&hdr);
2523 }
2524
2525 /*
2526 * a STATFS request
2527 */
2528 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2529 const struct nfs4_statfs_arg *args)
2530 {
2531 struct compound_hdr hdr = {
2532 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2533 };
2534
2535 encode_compound_hdr(xdr, req, &hdr);
2536 encode_sequence(xdr, &args->seq_args, &hdr);
2537 encode_putfh(xdr, args->fh, &hdr);
2538 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2539 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2540 encode_nops(&hdr);
2541 }
2542
2543 /*
2544 * GETATTR_BITMAP request
2545 */
2546 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2547 struct xdr_stream *xdr,
2548 struct nfs4_server_caps_arg *args)
2549 {
2550 struct compound_hdr hdr = {
2551 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2552 };
2553
2554 encode_compound_hdr(xdr, req, &hdr);
2555 encode_sequence(xdr, &args->seq_args, &hdr);
2556 encode_putfh(xdr, args->fhandle, &hdr);
2557 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2558 FATTR4_WORD0_FH_EXPIRE_TYPE|
2559 FATTR4_WORD0_LINK_SUPPORT|
2560 FATTR4_WORD0_SYMLINK_SUPPORT|
2561 FATTR4_WORD0_ACLSUPPORT, &hdr);
2562 encode_nops(&hdr);
2563 }
2564
2565 /*
2566 * a RENEW request
2567 */
2568 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2569 struct nfs_client *clp)
2570 {
2571 struct compound_hdr hdr = {
2572 .nops = 0,
2573 };
2574
2575 encode_compound_hdr(xdr, req, &hdr);
2576 encode_renew(xdr, clp->cl_clientid, &hdr);
2577 encode_nops(&hdr);
2578 }
2579
2580 /*
2581 * a SETCLIENTID request
2582 */
2583 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2584 struct xdr_stream *xdr,
2585 struct nfs4_setclientid *sc)
2586 {
2587 struct compound_hdr hdr = {
2588 .nops = 0,
2589 };
2590
2591 encode_compound_hdr(xdr, req, &hdr);
2592 encode_setclientid(xdr, sc, &hdr);
2593 encode_nops(&hdr);
2594 }
2595
2596 /*
2597 * a SETCLIENTID_CONFIRM request
2598 */
2599 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2600 struct xdr_stream *xdr,
2601 struct nfs4_setclientid_res *arg)
2602 {
2603 struct compound_hdr hdr = {
2604 .nops = 0,
2605 };
2606 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2607
2608 encode_compound_hdr(xdr, req, &hdr);
2609 encode_setclientid_confirm(xdr, arg, &hdr);
2610 encode_putrootfh(xdr, &hdr);
2611 encode_fsinfo(xdr, lease_bitmap, &hdr);
2612 encode_nops(&hdr);
2613 }
2614
2615 /*
2616 * DELEGRETURN request
2617 */
2618 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2619 struct xdr_stream *xdr,
2620 const struct nfs4_delegreturnargs *args)
2621 {
2622 struct compound_hdr hdr = {
2623 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2624 };
2625
2626 encode_compound_hdr(xdr, req, &hdr);
2627 encode_sequence(xdr, &args->seq_args, &hdr);
2628 encode_putfh(xdr, args->fhandle, &hdr);
2629 encode_getfattr(xdr, args->bitmask, &hdr);
2630 encode_delegreturn(xdr, args->stateid, &hdr);
2631 encode_nops(&hdr);
2632 }
2633
2634 /*
2635 * Encode FS_LOCATIONS request
2636 */
2637 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2638 struct xdr_stream *xdr,
2639 struct nfs4_fs_locations_arg *args)
2640 {
2641 struct compound_hdr hdr = {
2642 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2643 };
2644 uint32_t replen;
2645
2646 encode_compound_hdr(xdr, req, &hdr);
2647 encode_sequence(xdr, &args->seq_args, &hdr);
2648 encode_putfh(xdr, args->dir_fh, &hdr);
2649 encode_lookup(xdr, args->name, &hdr);
2650 replen = hdr.replen; /* get the attribute into args->page */
2651 encode_fs_locations(xdr, args->bitmask, &hdr);
2652
2653 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2654 0, PAGE_SIZE);
2655 encode_nops(&hdr);
2656 }
2657
2658 /*
2659 * Encode SECINFO request
2660 */
2661 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2662 struct xdr_stream *xdr,
2663 struct nfs4_secinfo_arg *args)
2664 {
2665 struct compound_hdr hdr = {
2666 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2667 };
2668
2669 encode_compound_hdr(xdr, req, &hdr);
2670 encode_sequence(xdr, &args->seq_args, &hdr);
2671 encode_putfh(xdr, args->dir_fh, &hdr);
2672 encode_secinfo(xdr, args->name, &hdr);
2673 encode_nops(&hdr);
2674 }
2675
2676 #if defined(CONFIG_NFS_V4_1)
2677 /*
2678 * BIND_CONN_TO_SESSION request
2679 */
2680 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2681 struct xdr_stream *xdr,
2682 struct nfs_client *clp)
2683 {
2684 struct compound_hdr hdr = {
2685 .minorversion = clp->cl_mvops->minor_version,
2686 };
2687
2688 encode_compound_hdr(xdr, req, &hdr);
2689 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2690 encode_nops(&hdr);
2691 }
2692
2693 /*
2694 * EXCHANGE_ID request
2695 */
2696 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2697 struct xdr_stream *xdr,
2698 struct nfs41_exchange_id_args *args)
2699 {
2700 struct compound_hdr hdr = {
2701 .minorversion = args->client->cl_mvops->minor_version,
2702 };
2703
2704 encode_compound_hdr(xdr, req, &hdr);
2705 encode_exchange_id(xdr, args, &hdr);
2706 encode_nops(&hdr);
2707 }
2708
2709 /*
2710 * a CREATE_SESSION request
2711 */
2712 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2713 struct xdr_stream *xdr,
2714 struct nfs41_create_session_args *args)
2715 {
2716 struct compound_hdr hdr = {
2717 .minorversion = args->client->cl_mvops->minor_version,
2718 };
2719
2720 encode_compound_hdr(xdr, req, &hdr);
2721 encode_create_session(xdr, args, &hdr);
2722 encode_nops(&hdr);
2723 }
2724
2725 /*
2726 * a DESTROY_SESSION request
2727 */
2728 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2729 struct xdr_stream *xdr,
2730 struct nfs4_session *session)
2731 {
2732 struct compound_hdr hdr = {
2733 .minorversion = session->clp->cl_mvops->minor_version,
2734 };
2735
2736 encode_compound_hdr(xdr, req, &hdr);
2737 encode_destroy_session(xdr, session, &hdr);
2738 encode_nops(&hdr);
2739 }
2740
2741 /*
2742 * a DESTROY_CLIENTID request
2743 */
2744 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2745 struct xdr_stream *xdr,
2746 struct nfs_client *clp)
2747 {
2748 struct compound_hdr hdr = {
2749 .minorversion = clp->cl_mvops->minor_version,
2750 };
2751
2752 encode_compound_hdr(xdr, req, &hdr);
2753 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2754 encode_nops(&hdr);
2755 }
2756
2757 /*
2758 * a SEQUENCE request
2759 */
2760 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2761 struct nfs4_sequence_args *args)
2762 {
2763 struct compound_hdr hdr = {
2764 .minorversion = nfs4_xdr_minorversion(args),
2765 };
2766
2767 encode_compound_hdr(xdr, req, &hdr);
2768 encode_sequence(xdr, args, &hdr);
2769 encode_nops(&hdr);
2770 }
2771
2772 /*
2773 * a GET_LEASE_TIME request
2774 */
2775 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2776 struct xdr_stream *xdr,
2777 struct nfs4_get_lease_time_args *args)
2778 {
2779 struct compound_hdr hdr = {
2780 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2781 };
2782 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2783
2784 encode_compound_hdr(xdr, req, &hdr);
2785 encode_sequence(xdr, &args->la_seq_args, &hdr);
2786 encode_putrootfh(xdr, &hdr);
2787 encode_fsinfo(xdr, lease_bitmap, &hdr);
2788 encode_nops(&hdr);
2789 }
2790
2791 /*
2792 * a RECLAIM_COMPLETE request
2793 */
2794 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2795 struct xdr_stream *xdr,
2796 struct nfs41_reclaim_complete_args *args)
2797 {
2798 struct compound_hdr hdr = {
2799 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2800 };
2801
2802 encode_compound_hdr(xdr, req, &hdr);
2803 encode_sequence(xdr, &args->seq_args, &hdr);
2804 encode_reclaim_complete(xdr, args, &hdr);
2805 encode_nops(&hdr);
2806 }
2807
2808 /*
2809 * Encode GETDEVICELIST request
2810 */
2811 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2812 struct xdr_stream *xdr,
2813 struct nfs4_getdevicelist_args *args)
2814 {
2815 struct compound_hdr hdr = {
2816 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2817 };
2818
2819 encode_compound_hdr(xdr, req, &hdr);
2820 encode_sequence(xdr, &args->seq_args, &hdr);
2821 encode_putfh(xdr, args->fh, &hdr);
2822 encode_getdevicelist(xdr, args, &hdr);
2823 encode_nops(&hdr);
2824 }
2825
2826 /*
2827 * Encode GETDEVICEINFO request
2828 */
2829 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2830 struct xdr_stream *xdr,
2831 struct nfs4_getdeviceinfo_args *args)
2832 {
2833 struct compound_hdr hdr = {
2834 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2835 };
2836
2837 encode_compound_hdr(xdr, req, &hdr);
2838 encode_sequence(xdr, &args->seq_args, &hdr);
2839 encode_getdeviceinfo(xdr, args, &hdr);
2840
2841 /* set up reply kvec. Subtract notification bitmap max size (2)
2842 * so that notification bitmap is put in xdr_buf tail */
2843 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2844 args->pdev->pages, args->pdev->pgbase,
2845 args->pdev->pglen);
2846
2847 encode_nops(&hdr);
2848 }
2849
2850 /*
2851 * Encode LAYOUTGET request
2852 */
2853 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2854 struct xdr_stream *xdr,
2855 struct nfs4_layoutget_args *args)
2856 {
2857 struct compound_hdr hdr = {
2858 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2859 };
2860
2861 encode_compound_hdr(xdr, req, &hdr);
2862 encode_sequence(xdr, &args->seq_args, &hdr);
2863 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2864 encode_layoutget(xdr, args, &hdr);
2865
2866 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2867 args->layout.pages, 0, args->layout.pglen);
2868
2869 encode_nops(&hdr);
2870 }
2871
2872 /*
2873 * Encode LAYOUTCOMMIT request
2874 */
2875 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2876 struct xdr_stream *xdr,
2877 struct nfs4_layoutcommit_args *args)
2878 {
2879 struct nfs4_layoutcommit_data *data =
2880 container_of(args, struct nfs4_layoutcommit_data, args);
2881 struct compound_hdr hdr = {
2882 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2883 };
2884
2885 encode_compound_hdr(xdr, req, &hdr);
2886 encode_sequence(xdr, &args->seq_args, &hdr);
2887 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2888 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2889 encode_getfattr(xdr, args->bitmask, &hdr);
2890 encode_nops(&hdr);
2891 }
2892
2893 /*
2894 * Encode LAYOUTRETURN request
2895 */
2896 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2897 struct xdr_stream *xdr,
2898 struct nfs4_layoutreturn_args *args)
2899 {
2900 struct compound_hdr hdr = {
2901 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2902 };
2903
2904 encode_compound_hdr(xdr, req, &hdr);
2905 encode_sequence(xdr, &args->seq_args, &hdr);
2906 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2907 encode_layoutreturn(xdr, args, &hdr);
2908 encode_nops(&hdr);
2909 }
2910
2911 /*
2912 * Encode SECINFO_NO_NAME request
2913 */
2914 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2915 struct xdr_stream *xdr,
2916 struct nfs41_secinfo_no_name_args *args)
2917 {
2918 struct compound_hdr hdr = {
2919 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2920 };
2921
2922 encode_compound_hdr(xdr, req, &hdr);
2923 encode_sequence(xdr, &args->seq_args, &hdr);
2924 encode_putrootfh(xdr, &hdr);
2925 encode_secinfo_no_name(xdr, args, &hdr);
2926 encode_nops(&hdr);
2927 return 0;
2928 }
2929
2930 /*
2931 * Encode TEST_STATEID request
2932 */
2933 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2934 struct xdr_stream *xdr,
2935 struct nfs41_test_stateid_args *args)
2936 {
2937 struct compound_hdr hdr = {
2938 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2939 };
2940
2941 encode_compound_hdr(xdr, req, &hdr);
2942 encode_sequence(xdr, &args->seq_args, &hdr);
2943 encode_test_stateid(xdr, args, &hdr);
2944 encode_nops(&hdr);
2945 }
2946
2947 /*
2948 * Encode FREE_STATEID request
2949 */
2950 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2951 struct xdr_stream *xdr,
2952 struct nfs41_free_stateid_args *args)
2953 {
2954 struct compound_hdr hdr = {
2955 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2956 };
2957
2958 encode_compound_hdr(xdr, req, &hdr);
2959 encode_sequence(xdr, &args->seq_args, &hdr);
2960 encode_free_stateid(xdr, args, &hdr);
2961 encode_nops(&hdr);
2962 }
2963 #endif /* CONFIG_NFS_V4_1 */
2964
2965 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2966 {
2967 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2968 "Remaining buffer length is %tu words.\n",
2969 func, xdr->end - xdr->p);
2970 }
2971
2972 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2973 {
2974 __be32 *p;
2975
2976 p = xdr_inline_decode(xdr, 4);
2977 if (unlikely(!p))
2978 goto out_overflow;
2979 *len = be32_to_cpup(p);
2980 p = xdr_inline_decode(xdr, *len);
2981 if (unlikely(!p))
2982 goto out_overflow;
2983 *string = (char *)p;
2984 return 0;
2985 out_overflow:
2986 print_overflow_msg(__func__, xdr);
2987 return -EIO;
2988 }
2989
2990 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2991 {
2992 __be32 *p;
2993
2994 p = xdr_inline_decode(xdr, 8);
2995 if (unlikely(!p))
2996 goto out_overflow;
2997 hdr->status = be32_to_cpup(p++);
2998 hdr->taglen = be32_to_cpup(p);
2999
3000 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3001 if (unlikely(!p))
3002 goto out_overflow;
3003 hdr->tag = (char *)p;
3004 p += XDR_QUADLEN(hdr->taglen);
3005 hdr->nops = be32_to_cpup(p);
3006 if (unlikely(hdr->nops < 1))
3007 return nfs4_stat_to_errno(hdr->status);
3008 return 0;
3009 out_overflow:
3010 print_overflow_msg(__func__, xdr);
3011 return -EIO;
3012 }
3013
3014 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3015 {
3016 __be32 *p;
3017 uint32_t opnum;
3018 int32_t nfserr;
3019
3020 p = xdr_inline_decode(xdr, 8);
3021 if (unlikely(!p))
3022 goto out_overflow;
3023 opnum = be32_to_cpup(p++);
3024 if (opnum != expected) {
3025 dprintk("nfs: Server returned operation"
3026 " %d but we issued a request for %d\n",
3027 opnum, expected);
3028 return -EIO;
3029 }
3030 nfserr = be32_to_cpup(p);
3031 if (nfserr != NFS_OK)
3032 return nfs4_stat_to_errno(nfserr);
3033 return 0;
3034 out_overflow:
3035 print_overflow_msg(__func__, xdr);
3036 return -EIO;
3037 }
3038
3039 /* Dummy routine */
3040 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3041 {
3042 __be32 *p;
3043 unsigned int strlen;
3044 char *str;
3045
3046 p = xdr_inline_decode(xdr, 12);
3047 if (likely(p))
3048 return decode_opaque_inline(xdr, &strlen, &str);
3049 print_overflow_msg(__func__, xdr);
3050 return -EIO;
3051 }
3052
3053 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3054 {
3055 uint32_t bmlen;
3056 __be32 *p;
3057
3058 p = xdr_inline_decode(xdr, 4);
3059 if (unlikely(!p))
3060 goto out_overflow;
3061 bmlen = be32_to_cpup(p);
3062
3063 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3064 p = xdr_inline_decode(xdr, (bmlen << 2));
3065 if (unlikely(!p))
3066 goto out_overflow;
3067 if (bmlen > 0) {
3068 bitmap[0] = be32_to_cpup(p++);
3069 if (bmlen > 1) {
3070 bitmap[1] = be32_to_cpup(p++);
3071 if (bmlen > 2)
3072 bitmap[2] = be32_to_cpup(p);
3073 }
3074 }
3075 return 0;
3076 out_overflow:
3077 print_overflow_msg(__func__, xdr);
3078 return -EIO;
3079 }
3080
3081 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3082 {
3083 __be32 *p;
3084
3085 p = xdr_inline_decode(xdr, 4);
3086 if (unlikely(!p))
3087 goto out_overflow;
3088 *attrlen = be32_to_cpup(p);
3089 *savep = xdr_stream_pos(xdr);
3090 return 0;
3091 out_overflow:
3092 print_overflow_msg(__func__, xdr);
3093 return -EIO;
3094 }
3095
3096 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3097 {
3098 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3099 int ret;
3100 ret = decode_attr_bitmap(xdr, bitmask);
3101 if (unlikely(ret < 0))
3102 return ret;
3103 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3104 } else
3105 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3106 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3107 bitmask[0], bitmask[1], bitmask[2]);
3108 return 0;
3109 }
3110
3111 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3112 {
3113 __be32 *p;
3114 int ret = 0;
3115
3116 *type = 0;
3117 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3118 return -EIO;
3119 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3120 p = xdr_inline_decode(xdr, 4);
3121 if (unlikely(!p))
3122 goto out_overflow;
3123 *type = be32_to_cpup(p);
3124 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3125 dprintk("%s: bad type %d\n", __func__, *type);
3126 return -EIO;
3127 }
3128 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3129 ret = NFS_ATTR_FATTR_TYPE;
3130 }
3131 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3132 return ret;
3133 out_overflow:
3134 print_overflow_msg(__func__, xdr);
3135 return -EIO;
3136 }
3137
3138 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3139 uint32_t *bitmap, uint32_t *type)
3140 {
3141 __be32 *p;
3142
3143 *type = 0;
3144 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3145 return -EIO;
3146 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3147 p = xdr_inline_decode(xdr, 4);
3148 if (unlikely(!p))
3149 goto out_overflow;
3150 *type = be32_to_cpup(p);
3151 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3152 }
3153 dprintk("%s: expire type=0x%x\n", __func__, *type);
3154 return 0;
3155 out_overflow:
3156 print_overflow_msg(__func__, xdr);
3157 return -EIO;
3158 }
3159
3160 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3161 {
3162 __be32 *p;
3163 int ret = 0;
3164
3165 *change = 0;
3166 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3167 return -EIO;
3168 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3169 p = xdr_inline_decode(xdr, 8);
3170 if (unlikely(!p))
3171 goto out_overflow;
3172 xdr_decode_hyper(p, change);
3173 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3174 ret = NFS_ATTR_FATTR_CHANGE;
3175 }
3176 dprintk("%s: change attribute=%Lu\n", __func__,
3177 (unsigned long long)*change);
3178 return ret;
3179 out_overflow:
3180 print_overflow_msg(__func__, xdr);
3181 return -EIO;
3182 }
3183
3184 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3185 {
3186 __be32 *p;
3187 int ret = 0;
3188
3189 *size = 0;
3190 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3191 return -EIO;
3192 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3193 p = xdr_inline_decode(xdr, 8);
3194 if (unlikely(!p))
3195 goto out_overflow;
3196 xdr_decode_hyper(p, size);
3197 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3198 ret = NFS_ATTR_FATTR_SIZE;
3199 }
3200 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3201 return ret;
3202 out_overflow:
3203 print_overflow_msg(__func__, xdr);
3204 return -EIO;
3205 }
3206
3207 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3208 {
3209 __be32 *p;
3210
3211 *res = 0;
3212 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3213 return -EIO;
3214 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3215 p = xdr_inline_decode(xdr, 4);
3216 if (unlikely(!p))
3217 goto out_overflow;
3218 *res = be32_to_cpup(p);
3219 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3220 }
3221 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3222 return 0;
3223 out_overflow:
3224 print_overflow_msg(__func__, xdr);
3225 return -EIO;
3226 }
3227
3228 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3229 {
3230 __be32 *p;
3231
3232 *res = 0;
3233 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3234 return -EIO;
3235 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3236 p = xdr_inline_decode(xdr, 4);
3237 if (unlikely(!p))
3238 goto out_overflow;
3239 *res = be32_to_cpup(p);
3240 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3241 }
3242 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3243 return 0;
3244 out_overflow:
3245 print_overflow_msg(__func__, xdr);
3246 return -EIO;
3247 }
3248
3249 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3250 {
3251 __be32 *p;
3252 int ret = 0;
3253
3254 fsid->major = 0;
3255 fsid->minor = 0;
3256 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3257 return -EIO;
3258 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3259 p = xdr_inline_decode(xdr, 16);
3260 if (unlikely(!p))
3261 goto out_overflow;
3262 p = xdr_decode_hyper(p, &fsid->major);
3263 xdr_decode_hyper(p, &fsid->minor);
3264 bitmap[0] &= ~FATTR4_WORD0_FSID;
3265 ret = NFS_ATTR_FATTR_FSID;
3266 }
3267 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3268 (unsigned long long)fsid->major,
3269 (unsigned long long)fsid->minor);
3270 return ret;
3271 out_overflow:
3272 print_overflow_msg(__func__, xdr);
3273 return -EIO;
3274 }
3275
3276 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3277 {
3278 __be32 *p;
3279
3280 *res = 60;
3281 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3282 return -EIO;
3283 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3284 p = xdr_inline_decode(xdr, 4);
3285 if (unlikely(!p))
3286 goto out_overflow;
3287 *res = be32_to_cpup(p);
3288 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3289 }
3290 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3291 return 0;
3292 out_overflow:
3293 print_overflow_msg(__func__, xdr);
3294 return -EIO;
3295 }
3296
3297 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3298 {
3299 __be32 *p;
3300
3301 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3302 return -EIO;
3303 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3304 p = xdr_inline_decode(xdr, 4);
3305 if (unlikely(!p))
3306 goto out_overflow;
3307 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3308 *res = -be32_to_cpup(p);
3309 }
3310 return 0;
3311 out_overflow:
3312 print_overflow_msg(__func__, xdr);
3313 return -EIO;
3314 }
3315
3316 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3317 {
3318 __be32 *p;
3319 int len;
3320
3321 if (fh != NULL)
3322 memset(fh, 0, sizeof(*fh));
3323
3324 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3325 return -EIO;
3326 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3327 p = xdr_inline_decode(xdr, 4);
3328 if (unlikely(!p))
3329 goto out_overflow;
3330 len = be32_to_cpup(p);
3331 if (len > NFS4_FHSIZE)
3332 return -EIO;
3333 p = xdr_inline_decode(xdr, len);
3334 if (unlikely(!p))
3335 goto out_overflow;
3336 if (fh != NULL) {
3337 memcpy(fh->data, p, len);
3338 fh->size = len;
3339 }
3340 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3341 }
3342 return 0;
3343 out_overflow:
3344 print_overflow_msg(__func__, xdr);
3345 return -EIO;
3346 }
3347
3348 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3349 {
3350 __be32 *p;
3351
3352 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3353 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3354 return -EIO;
3355 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3356 p = xdr_inline_decode(xdr, 4);
3357 if (unlikely(!p))
3358 goto out_overflow;
3359 *res = be32_to_cpup(p);
3360 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3361 }
3362 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3363 return 0;
3364 out_overflow:
3365 print_overflow_msg(__func__, xdr);
3366 return -EIO;
3367 }
3368
3369 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3370 {
3371 __be32 *p;
3372 int ret = 0;
3373
3374 *fileid = 0;
3375 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3376 return -EIO;
3377 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3378 p = xdr_inline_decode(xdr, 8);
3379 if (unlikely(!p))
3380 goto out_overflow;
3381 xdr_decode_hyper(p, fileid);
3382 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3383 ret = NFS_ATTR_FATTR_FILEID;
3384 }
3385 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3386 return ret;
3387 out_overflow:
3388 print_overflow_msg(__func__, xdr);
3389 return -EIO;
3390 }
3391
3392 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3393 {
3394 __be32 *p;
3395 int ret = 0;
3396
3397 *fileid = 0;
3398 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3399 return -EIO;
3400 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3401 p = xdr_inline_decode(xdr, 8);
3402 if (unlikely(!p))
3403 goto out_overflow;
3404 xdr_decode_hyper(p, fileid);
3405 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3406 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3407 }
3408 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3409 return ret;
3410 out_overflow:
3411 print_overflow_msg(__func__, xdr);
3412 return -EIO;
3413 }
3414
3415 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3416 {
3417 __be32 *p;
3418 int status = 0;
3419
3420 *res = 0;
3421 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3422 return -EIO;
3423 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3424 p = xdr_inline_decode(xdr, 8);
3425 if (unlikely(!p))
3426 goto out_overflow;
3427 xdr_decode_hyper(p, res);
3428 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3429 }
3430 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3431 return status;
3432 out_overflow:
3433 print_overflow_msg(__func__, xdr);
3434 return -EIO;
3435 }
3436
3437 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3438 {
3439 __be32 *p;
3440 int status = 0;
3441
3442 *res = 0;
3443 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3444 return -EIO;
3445 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3446 p = xdr_inline_decode(xdr, 8);
3447 if (unlikely(!p))
3448 goto out_overflow;
3449 xdr_decode_hyper(p, res);
3450 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3451 }
3452 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3453 return status;
3454 out_overflow:
3455 print_overflow_msg(__func__, xdr);
3456 return -EIO;
3457 }
3458
3459 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3460 {
3461 __be32 *p;
3462 int status = 0;
3463
3464 *res = 0;
3465 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3466 return -EIO;
3467 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3468 p = xdr_inline_decode(xdr, 8);
3469 if (unlikely(!p))
3470 goto out_overflow;
3471 xdr_decode_hyper(p, res);
3472 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3473 }
3474 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3475 return status;
3476 out_overflow:
3477 print_overflow_msg(__func__, xdr);
3478 return -EIO;
3479 }
3480
3481 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3482 {
3483 u32 n;
3484 __be32 *p;
3485 int status = 0;
3486
3487 p = xdr_inline_decode(xdr, 4);
3488 if (unlikely(!p))
3489 goto out_overflow;
3490 n = be32_to_cpup(p);
3491 if (n == 0)
3492 goto root_path;
3493 dprintk("pathname4: ");
3494 path->ncomponents = 0;
3495 while (path->ncomponents < n) {
3496 struct nfs4_string *component = &path->components[path->ncomponents];
3497 status = decode_opaque_inline(xdr, &component->len, &component->data);
3498 if (unlikely(status != 0))
3499 goto out_eio;
3500 ifdebug (XDR)
3501 pr_cont("%s%.*s ",
3502 (path->ncomponents != n ? "/ " : ""),
3503 component->len, component->data);
3504 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3505 path->ncomponents++;
3506 else {
3507 dprintk("cannot parse %d components in path\n", n);
3508 goto out_eio;
3509 }
3510 }
3511 out:
3512 return status;
3513 root_path:
3514 /* a root pathname is sent as a zero component4 */
3515 path->ncomponents = 1;
3516 path->components[0].len=0;
3517 path->components[0].data=NULL;
3518 dprintk("pathname4: /\n");
3519 goto out;
3520 out_eio:
3521 dprintk(" status %d", status);
3522 status = -EIO;
3523 goto out;
3524 out_overflow:
3525 print_overflow_msg(__func__, xdr);
3526 return -EIO;
3527 }
3528
3529 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3530 {
3531 int n;
3532 __be32 *p;
3533 int status = -EIO;
3534
3535 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3536 goto out;
3537 status = 0;
3538 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3539 goto out;
3540 status = -EIO;
3541 /* Ignore borken servers that return unrequested attrs */
3542 if (unlikely(res == NULL))
3543 goto out;
3544 dprintk("%s: fsroot:\n", __func__);
3545 status = decode_pathname(xdr, &res->fs_path);
3546 if (unlikely(status != 0))
3547 goto out;
3548 p = xdr_inline_decode(xdr, 4);
3549 if (unlikely(!p))
3550 goto out_overflow;
3551 n = be32_to_cpup(p);
3552 if (n <= 0)
3553 goto out_eio;
3554 res->nlocations = 0;
3555 while (res->nlocations < n) {
3556 u32 m;
3557 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3558
3559 p = xdr_inline_decode(xdr, 4);
3560 if (unlikely(!p))
3561 goto out_overflow;
3562 m = be32_to_cpup(p);
3563
3564 loc->nservers = 0;
3565 dprintk("%s: servers:\n", __func__);
3566 while (loc->nservers < m) {
3567 struct nfs4_string *server = &loc->servers[loc->nservers];
3568 status = decode_opaque_inline(xdr, &server->len, &server->data);
3569 if (unlikely(status != 0))
3570 goto out_eio;
3571 dprintk("%s ", server->data);
3572 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3573 loc->nservers++;
3574 else {
3575 unsigned int i;
3576 dprintk("%s: using first %u of %u servers "
3577 "returned for location %u\n",
3578 __func__,
3579 NFS4_FS_LOCATION_MAXSERVERS,
3580 m, res->nlocations);
3581 for (i = loc->nservers; i < m; i++) {
3582 unsigned int len;
3583 char *data;
3584 status = decode_opaque_inline(xdr, &len, &data);
3585 if (unlikely(status != 0))
3586 goto out_eio;
3587 }
3588 }
3589 }
3590 status = decode_pathname(xdr, &loc->rootpath);
3591 if (unlikely(status != 0))
3592 goto out_eio;
3593 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3594 res->nlocations++;
3595 }
3596 if (res->nlocations != 0)
3597 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3598 out:
3599 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3600 return status;
3601 out_overflow:
3602 print_overflow_msg(__func__, xdr);
3603 out_eio:
3604 status = -EIO;
3605 goto out;
3606 }
3607
3608 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3609 {
3610 __be32 *p;
3611 int status = 0;
3612
3613 *res = 0;
3614 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3615 return -EIO;
3616 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3617 p = xdr_inline_decode(xdr, 8);
3618 if (unlikely(!p))
3619 goto out_overflow;
3620 xdr_decode_hyper(p, res);
3621 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3622 }
3623 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3624 return status;
3625 out_overflow:
3626 print_overflow_msg(__func__, xdr);
3627 return -EIO;
3628 }
3629
3630 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3631 {
3632 __be32 *p;
3633 int status = 0;
3634
3635 *maxlink = 1;
3636 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3637 return -EIO;
3638 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3639 p = xdr_inline_decode(xdr, 4);
3640 if (unlikely(!p))
3641 goto out_overflow;
3642 *maxlink = be32_to_cpup(p);
3643 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3644 }
3645 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3646 return status;
3647 out_overflow:
3648 print_overflow_msg(__func__, xdr);
3649 return -EIO;
3650 }
3651
3652 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3653 {
3654 __be32 *p;
3655 int status = 0;
3656
3657 *maxname = 1024;
3658 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3659 return -EIO;
3660 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3661 p = xdr_inline_decode(xdr, 4);
3662 if (unlikely(!p))
3663 goto out_overflow;
3664 *maxname = be32_to_cpup(p);
3665 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3666 }
3667 dprintk("%s: maxname=%u\n", __func__, *maxname);
3668 return status;
3669 out_overflow:
3670 print_overflow_msg(__func__, xdr);
3671 return -EIO;
3672 }
3673
3674 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3675 {
3676 __be32 *p;
3677 int status = 0;
3678
3679 *res = 1024;
3680 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3681 return -EIO;
3682 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3683 uint64_t maxread;
3684 p = xdr_inline_decode(xdr, 8);
3685 if (unlikely(!p))
3686 goto out_overflow;
3687 xdr_decode_hyper(p, &maxread);
3688 if (maxread > 0x7FFFFFFF)
3689 maxread = 0x7FFFFFFF;
3690 *res = (uint32_t)maxread;
3691 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3692 }
3693 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3694 return status;
3695 out_overflow:
3696 print_overflow_msg(__func__, xdr);
3697 return -EIO;
3698 }
3699
3700 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3701 {
3702 __be32 *p;
3703 int status = 0;
3704
3705 *res = 1024;
3706 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3707 return -EIO;
3708 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3709 uint64_t maxwrite;
3710 p = xdr_inline_decode(xdr, 8);
3711 if (unlikely(!p))
3712 goto out_overflow;
3713 xdr_decode_hyper(p, &maxwrite);
3714 if (maxwrite > 0x7FFFFFFF)
3715 maxwrite = 0x7FFFFFFF;
3716 *res = (uint32_t)maxwrite;
3717 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3718 }
3719 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3720 return status;
3721 out_overflow:
3722 print_overflow_msg(__func__, xdr);
3723 return -EIO;
3724 }
3725
3726 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3727 {
3728 uint32_t tmp;
3729 __be32 *p;
3730 int ret = 0;
3731
3732 *mode = 0;
3733 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3734 return -EIO;
3735 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3736 p = xdr_inline_decode(xdr, 4);
3737 if (unlikely(!p))
3738 goto out_overflow;
3739 tmp = be32_to_cpup(p);
3740 *mode = tmp & ~S_IFMT;
3741 bitmap[1] &= ~FATTR4_WORD1_MODE;
3742 ret = NFS_ATTR_FATTR_MODE;
3743 }
3744 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3745 return ret;
3746 out_overflow:
3747 print_overflow_msg(__func__, xdr);
3748 return -EIO;
3749 }
3750
3751 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3752 {
3753 __be32 *p;
3754 int ret = 0;
3755
3756 *nlink = 1;
3757 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3758 return -EIO;
3759 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3760 p = xdr_inline_decode(xdr, 4);
3761 if (unlikely(!p))
3762 goto out_overflow;
3763 *nlink = be32_to_cpup(p);
3764 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3765 ret = NFS_ATTR_FATTR_NLINK;
3766 }
3767 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3768 return ret;
3769 out_overflow:
3770 print_overflow_msg(__func__, xdr);
3771 return -EIO;
3772 }
3773
3774 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3775 const struct nfs_server *server, uint32_t *uid,
3776 struct nfs4_string *owner_name)
3777 {
3778 uint32_t len;
3779 __be32 *p;
3780 int ret = 0;
3781
3782 *uid = -2;
3783 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3784 return -EIO;
3785 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3786 p = xdr_inline_decode(xdr, 4);
3787 if (unlikely(!p))
3788 goto out_overflow;
3789 len = be32_to_cpup(p);
3790 p = xdr_inline_decode(xdr, len);
3791 if (unlikely(!p))
3792 goto out_overflow;
3793 if (owner_name != NULL) {
3794 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3795 if (owner_name->data != NULL) {
3796 owner_name->len = len;
3797 ret = NFS_ATTR_FATTR_OWNER_NAME;
3798 }
3799 } else if (len < XDR_MAX_NETOBJ) {
3800 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3801 ret = NFS_ATTR_FATTR_OWNER;
3802 else
3803 dprintk("%s: nfs_map_name_to_uid failed!\n",
3804 __func__);
3805 } else
3806 dprintk("%s: name too long (%u)!\n",
3807 __func__, len);
3808 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3809 }
3810 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3811 return ret;
3812 out_overflow:
3813 print_overflow_msg(__func__, xdr);
3814 return -EIO;
3815 }
3816
3817 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3818 const struct nfs_server *server, uint32_t *gid,
3819 struct nfs4_string *group_name)
3820 {
3821 uint32_t len;
3822 __be32 *p;
3823 int ret = 0;
3824
3825 *gid = -2;
3826 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3827 return -EIO;
3828 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3829 p = xdr_inline_decode(xdr, 4);
3830 if (unlikely(!p))
3831 goto out_overflow;
3832 len = be32_to_cpup(p);
3833 p = xdr_inline_decode(xdr, len);
3834 if (unlikely(!p))
3835 goto out_overflow;
3836 if (group_name != NULL) {
3837 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3838 if (group_name->data != NULL) {
3839 group_name->len = len;
3840 ret = NFS_ATTR_FATTR_GROUP_NAME;
3841 }
3842 } else if (len < XDR_MAX_NETOBJ) {
3843 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3844 ret = NFS_ATTR_FATTR_GROUP;
3845 else
3846 dprintk("%s: nfs_map_group_to_gid failed!\n",
3847 __func__);
3848 } else
3849 dprintk("%s: name too long (%u)!\n",
3850 __func__, len);
3851 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3852 }
3853 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3854 return ret;
3855 out_overflow:
3856 print_overflow_msg(__func__, xdr);
3857 return -EIO;
3858 }
3859
3860 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3861 {
3862 uint32_t major = 0, minor = 0;
3863 __be32 *p;
3864 int ret = 0;
3865
3866 *rdev = MKDEV(0,0);
3867 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3868 return -EIO;
3869 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3870 dev_t tmp;
3871
3872 p = xdr_inline_decode(xdr, 8);
3873 if (unlikely(!p))
3874 goto out_overflow;
3875 major = be32_to_cpup(p++);
3876 minor = be32_to_cpup(p);
3877 tmp = MKDEV(major, minor);
3878 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3879 *rdev = tmp;
3880 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3881 ret = NFS_ATTR_FATTR_RDEV;
3882 }
3883 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3884 return ret;
3885 out_overflow:
3886 print_overflow_msg(__func__, xdr);
3887 return -EIO;
3888 }
3889
3890 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3891 {
3892 __be32 *p;
3893 int status = 0;
3894
3895 *res = 0;
3896 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3897 return -EIO;
3898 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3899 p = xdr_inline_decode(xdr, 8);
3900 if (unlikely(!p))
3901 goto out_overflow;
3902 xdr_decode_hyper(p, res);
3903 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3904 }
3905 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3906 return status;
3907 out_overflow:
3908 print_overflow_msg(__func__, xdr);
3909 return -EIO;
3910 }
3911
3912 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3913 {
3914 __be32 *p;
3915 int status = 0;
3916
3917 *res = 0;
3918 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3919 return -EIO;
3920 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3921 p = xdr_inline_decode(xdr, 8);
3922 if (unlikely(!p))
3923 goto out_overflow;
3924 xdr_decode_hyper(p, res);
3925 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3926 }
3927 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3928 return status;
3929 out_overflow:
3930 print_overflow_msg(__func__, xdr);
3931 return -EIO;
3932 }
3933
3934 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3935 {
3936 __be32 *p;
3937 int status = 0;
3938
3939 *res = 0;
3940 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3941 return -EIO;
3942 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3943 p = xdr_inline_decode(xdr, 8);
3944 if (unlikely(!p))
3945 goto out_overflow;
3946 xdr_decode_hyper(p, res);
3947 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3948 }
3949 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3950 return status;
3951 out_overflow:
3952 print_overflow_msg(__func__, xdr);
3953 return -EIO;
3954 }
3955
3956 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3957 {
3958 __be32 *p;
3959 int ret = 0;
3960
3961 *used = 0;
3962 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3963 return -EIO;
3964 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3965 p = xdr_inline_decode(xdr, 8);
3966 if (unlikely(!p))
3967 goto out_overflow;
3968 xdr_decode_hyper(p, used);
3969 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3970 ret = NFS_ATTR_FATTR_SPACE_USED;
3971 }
3972 dprintk("%s: space used=%Lu\n", __func__,
3973 (unsigned long long)*used);
3974 return ret;
3975 out_overflow:
3976 print_overflow_msg(__func__, xdr);
3977 return -EIO;
3978 }
3979
3980 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3981 {
3982 __be32 *p;
3983 uint64_t sec;
3984 uint32_t nsec;
3985
3986 p = xdr_inline_decode(xdr, 12);
3987 if (unlikely(!p))
3988 goto out_overflow;
3989 p = xdr_decode_hyper(p, &sec);
3990 nsec = be32_to_cpup(p);
3991 time->tv_sec = (time_t)sec;
3992 time->tv_nsec = (long)nsec;
3993 return 0;
3994 out_overflow:
3995 print_overflow_msg(__func__, xdr);
3996 return -EIO;
3997 }
3998
3999 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4000 {
4001 int status = 0;
4002
4003 time->tv_sec = 0;
4004 time->tv_nsec = 0;
4005 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4006 return -EIO;
4007 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4008 status = decode_attr_time(xdr, time);
4009 if (status == 0)
4010 status = NFS_ATTR_FATTR_ATIME;
4011 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4012 }
4013 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4014 return status;
4015 }
4016
4017 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4018 {
4019 int status = 0;
4020
4021 time->tv_sec = 0;
4022 time->tv_nsec = 0;
4023 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4024 return -EIO;
4025 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4026 status = decode_attr_time(xdr, time);
4027 if (status == 0)
4028 status = NFS_ATTR_FATTR_CTIME;
4029 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4030 }
4031 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4032 return status;
4033 }
4034
4035 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4036 struct timespec *time)
4037 {
4038 int status = 0;
4039
4040 time->tv_sec = 0;
4041 time->tv_nsec = 0;
4042 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4043 return -EIO;
4044 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4045 status = decode_attr_time(xdr, time);
4046 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4047 }
4048 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4049 (long)time->tv_nsec);
4050 return status;
4051 }
4052
4053 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4054 {
4055 int status = 0;
4056
4057 time->tv_sec = 0;
4058 time->tv_nsec = 0;
4059 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4060 return -EIO;
4061 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4062 status = decode_attr_time(xdr, time);
4063 if (status == 0)
4064 status = NFS_ATTR_FATTR_MTIME;
4065 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4066 }
4067 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4068 return status;
4069 }
4070
4071 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4072 {
4073 unsigned int attrwords = XDR_QUADLEN(attrlen);
4074 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4075
4076 if (unlikely(attrwords != nwords)) {
4077 dprintk("%s: server returned incorrect attribute length: "
4078 "%u %c %u\n",
4079 __func__,
4080 attrwords << 2,
4081 (attrwords < nwords) ? '<' : '>',
4082 nwords << 2);
4083 return -EIO;
4084 }
4085 return 0;
4086 }
4087
4088 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4089 {
4090 __be32 *p;
4091
4092 p = xdr_inline_decode(xdr, 20);
4093 if (unlikely(!p))
4094 goto out_overflow;
4095 cinfo->atomic = be32_to_cpup(p++);
4096 p = xdr_decode_hyper(p, &cinfo->before);
4097 xdr_decode_hyper(p, &cinfo->after);
4098 return 0;
4099 out_overflow:
4100 print_overflow_msg(__func__, xdr);
4101 return -EIO;
4102 }
4103
4104 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
4105 {
4106 __be32 *p;
4107 uint32_t supp, acc;
4108 int status;
4109
4110 status = decode_op_hdr(xdr, OP_ACCESS);
4111 if (status)
4112 return status;
4113 p = xdr_inline_decode(xdr, 8);
4114 if (unlikely(!p))
4115 goto out_overflow;
4116 supp = be32_to_cpup(p++);
4117 acc = be32_to_cpup(p);
4118 access->supported = supp;
4119 access->access = acc;
4120 return 0;
4121 out_overflow:
4122 print_overflow_msg(__func__, xdr);
4123 return -EIO;
4124 }
4125
4126 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4127 {
4128 __be32 *p;
4129
4130 p = xdr_inline_decode(xdr, len);
4131 if (likely(p)) {
4132 memcpy(buf, p, len);
4133 return 0;
4134 }
4135 print_overflow_msg(__func__, xdr);
4136 return -EIO;
4137 }
4138
4139 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4140 {
4141 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4142 }
4143
4144 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4145 {
4146 int status;
4147
4148 status = decode_op_hdr(xdr, OP_CLOSE);
4149 if (status != -EIO)
4150 nfs_increment_open_seqid(status, res->seqid);
4151 if (!status)
4152 status = decode_stateid(xdr, &res->stateid);
4153 return status;
4154 }
4155
4156 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4157 {
4158 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4159 }
4160
4161 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4162 {
4163 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4164 }
4165
4166 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4167 {
4168 int status;
4169
4170 status = decode_op_hdr(xdr, OP_COMMIT);
4171 if (!status)
4172 status = decode_write_verifier(xdr, &res->verf->verifier);
4173 return status;
4174 }
4175
4176 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4177 {
4178 __be32 *p;
4179 uint32_t bmlen;
4180 int status;
4181
4182 status = decode_op_hdr(xdr, OP_CREATE);
4183 if (status)
4184 return status;
4185 if ((status = decode_change_info(xdr, cinfo)))
4186 return status;
4187 p = xdr_inline_decode(xdr, 4);
4188 if (unlikely(!p))
4189 goto out_overflow;
4190 bmlen = be32_to_cpup(p);
4191 p = xdr_inline_decode(xdr, bmlen << 2);
4192 if (likely(p))
4193 return 0;
4194 out_overflow:
4195 print_overflow_msg(__func__, xdr);
4196 return -EIO;
4197 }
4198
4199 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4200 {
4201 unsigned int savep;
4202 uint32_t attrlen, bitmap[3] = {0};
4203 int status;
4204
4205 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4206 goto xdr_error;
4207 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4208 goto xdr_error;
4209 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4210 goto xdr_error;
4211 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4212 goto xdr_error;
4213 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4214 &res->fh_expire_type)) != 0)
4215 goto xdr_error;
4216 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4217 goto xdr_error;
4218 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4219 goto xdr_error;
4220 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4221 goto xdr_error;
4222 status = verify_attr_len(xdr, savep, attrlen);
4223 xdr_error:
4224 dprintk("%s: xdr returned %d!\n", __func__, -status);
4225 return status;
4226 }
4227
4228 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4229 {
4230 unsigned int savep;
4231 uint32_t attrlen, bitmap[3] = {0};
4232 int status;
4233
4234 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4235 goto xdr_error;
4236 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4237 goto xdr_error;
4238 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4239 goto xdr_error;
4240
4241 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4242 goto xdr_error;
4243 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4244 goto xdr_error;
4245 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4246 goto xdr_error;
4247 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4248 goto xdr_error;
4249 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4250 goto xdr_error;
4251 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4252 goto xdr_error;
4253
4254 status = verify_attr_len(xdr, savep, attrlen);
4255 xdr_error:
4256 dprintk("%s: xdr returned %d!\n", __func__, -status);
4257 return status;
4258 }
4259
4260 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4261 {
4262 unsigned int savep;
4263 uint32_t attrlen, bitmap[3] = {0};
4264 int status;
4265
4266 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4267 goto xdr_error;
4268 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4269 goto xdr_error;
4270 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4271 goto xdr_error;
4272
4273 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4274 goto xdr_error;
4275 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4276 goto xdr_error;
4277
4278 status = verify_attr_len(xdr, savep, attrlen);
4279 xdr_error:
4280 dprintk("%s: xdr returned %d!\n", __func__, -status);
4281 return status;
4282 }
4283
4284 static int decode_threshold_hint(struct xdr_stream *xdr,
4285 uint32_t *bitmap,
4286 uint64_t *res,
4287 uint32_t hint_bit)
4288 {
4289 __be32 *p;
4290
4291 *res = 0;
4292 if (likely(bitmap[0] & hint_bit)) {
4293 p = xdr_inline_decode(xdr, 8);
4294 if (unlikely(!p))
4295 goto out_overflow;
4296 xdr_decode_hyper(p, res);
4297 }
4298 return 0;
4299 out_overflow:
4300 print_overflow_msg(__func__, xdr);
4301 return -EIO;
4302 }
4303
4304 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4305 struct nfs4_threshold *res)
4306 {
4307 __be32 *p;
4308 unsigned int savep;
4309 uint32_t bitmap[3] = {0,}, attrlen;
4310 int status;
4311
4312 /* layout type */
4313 p = xdr_inline_decode(xdr, 4);
4314 if (unlikely(!p)) {
4315 print_overflow_msg(__func__, xdr);
4316 return -EIO;
4317 }
4318 res->l_type = be32_to_cpup(p);
4319
4320 /* thi_hintset bitmap */
4321 status = decode_attr_bitmap(xdr, bitmap);
4322 if (status < 0)
4323 goto xdr_error;
4324
4325 /* thi_hintlist length */
4326 status = decode_attr_length(xdr, &attrlen, &savep);
4327 if (status < 0)
4328 goto xdr_error;
4329 /* thi_hintlist */
4330 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4331 if (status < 0)
4332 goto xdr_error;
4333 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4334 if (status < 0)
4335 goto xdr_error;
4336 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4337 THRESHOLD_RD_IO);
4338 if (status < 0)
4339 goto xdr_error;
4340 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4341 THRESHOLD_WR_IO);
4342 if (status < 0)
4343 goto xdr_error;
4344
4345 status = verify_attr_len(xdr, savep, attrlen);
4346 res->bm = bitmap[0];
4347
4348 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4349 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4350 res->wr_io_sz);
4351 xdr_error:
4352 dprintk("%s ret=%d!\n", __func__, status);
4353 return status;
4354 }
4355
4356 /*
4357 * Thresholds on pNFS direct I/O vrs MDS I/O
4358 */
4359 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4360 uint32_t *bitmap,
4361 struct nfs4_threshold *res)
4362 {
4363 __be32 *p;
4364 int status = 0;
4365 uint32_t num;
4366
4367 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4368 return -EIO;
4369 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4370 /* Did the server return an unrequested attribute? */
4371 if (unlikely(res == NULL))
4372 return -EREMOTEIO;
4373 p = xdr_inline_decode(xdr, 4);
4374 if (unlikely(!p))
4375 goto out_overflow;
4376 num = be32_to_cpup(p);
4377 if (num == 0)
4378 return 0;
4379 if (num > 1)
4380 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4381 "drivers per filesystem not supported\n",
4382 __func__);
4383
4384 status = decode_first_threshold_item4(xdr, res);
4385 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4386 }
4387 return status;
4388 out_overflow:
4389 print_overflow_msg(__func__, xdr);
4390 return -EIO;
4391 }
4392
4393 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4394 struct nfs_fattr *fattr, struct nfs_fh *fh,
4395 struct nfs4_fs_locations *fs_loc,
4396 const struct nfs_server *server)
4397 {
4398 int status;
4399 umode_t fmode = 0;
4400 uint32_t type;
4401 int32_t err;
4402
4403 status = decode_attr_type(xdr, bitmap, &type);
4404 if (status < 0)
4405 goto xdr_error;
4406 fattr->mode = 0;
4407 if (status != 0) {
4408 fattr->mode |= nfs_type2fmt[type];
4409 fattr->valid |= status;
4410 }
4411
4412 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4413 if (status < 0)
4414 goto xdr_error;
4415 fattr->valid |= status;
4416
4417 status = decode_attr_size(xdr, bitmap, &fattr->size);
4418 if (status < 0)
4419 goto xdr_error;
4420 fattr->valid |= status;
4421
4422 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4423 if (status < 0)
4424 goto xdr_error;
4425 fattr->valid |= status;
4426
4427 err = 0;
4428 status = decode_attr_error(xdr, bitmap, &err);
4429 if (status < 0)
4430 goto xdr_error;
4431
4432 status = decode_attr_filehandle(xdr, bitmap, fh);
4433 if (status < 0)
4434 goto xdr_error;
4435
4436 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4437 if (status < 0)
4438 goto xdr_error;
4439 fattr->valid |= status;
4440
4441 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4442 if (status < 0)
4443 goto xdr_error;
4444 fattr->valid |= status;
4445
4446 status = decode_attr_mode(xdr, bitmap, &fmode);
4447 if (status < 0)
4448 goto xdr_error;
4449 if (status != 0) {
4450 fattr->mode |= fmode;
4451 fattr->valid |= status;
4452 }
4453
4454 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4455 if (status < 0)
4456 goto xdr_error;
4457 fattr->valid |= status;
4458
4459 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4460 if (status < 0)
4461 goto xdr_error;
4462 fattr->valid |= status;
4463
4464 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4465 if (status < 0)
4466 goto xdr_error;
4467 fattr->valid |= status;
4468
4469 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4470 if (status < 0)
4471 goto xdr_error;
4472 fattr->valid |= status;
4473
4474 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4475 if (status < 0)
4476 goto xdr_error;
4477 fattr->valid |= status;
4478
4479 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4480 if (status < 0)
4481 goto xdr_error;
4482 fattr->valid |= status;
4483
4484 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4485 if (status < 0)
4486 goto xdr_error;
4487 fattr->valid |= status;
4488
4489 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4490 if (status < 0)
4491 goto xdr_error;
4492 fattr->valid |= status;
4493
4494 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4495 if (status < 0)
4496 goto xdr_error;
4497 fattr->valid |= status;
4498
4499 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4500 if (status < 0)
4501 goto xdr_error;
4502
4503 xdr_error:
4504 dprintk("%s: xdr returned %d\n", __func__, -status);
4505 return status;
4506 }
4507
4508 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4509 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4510 const struct nfs_server *server)
4511 {
4512 unsigned int savep;
4513 uint32_t attrlen,
4514 bitmap[3] = {0};
4515 int status;
4516
4517 status = decode_op_hdr(xdr, OP_GETATTR);
4518 if (status < 0)
4519 goto xdr_error;
4520
4521 status = decode_attr_bitmap(xdr, bitmap);
4522 if (status < 0)
4523 goto xdr_error;
4524
4525 status = decode_attr_length(xdr, &attrlen, &savep);
4526 if (status < 0)
4527 goto xdr_error;
4528
4529 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4530 if (status < 0)
4531 goto xdr_error;
4532
4533 status = verify_attr_len(xdr, savep, attrlen);
4534 xdr_error:
4535 dprintk("%s: xdr returned %d\n", __func__, -status);
4536 return status;
4537 }
4538
4539 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4540 const struct nfs_server *server)
4541 {
4542 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4543 }
4544
4545 /*
4546 * Decode potentially multiple layout types. Currently we only support
4547 * one layout driver per file system.
4548 */
4549 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4550 uint32_t *layouttype)
4551 {
4552 uint32_t *p;
4553 int num;
4554
4555 p = xdr_inline_decode(xdr, 4);
4556 if (unlikely(!p))
4557 goto out_overflow;
4558 num = be32_to_cpup(p);
4559
4560 /* pNFS is not supported by the underlying file system */
4561 if (num == 0) {
4562 *layouttype = 0;
4563 return 0;
4564 }
4565 if (num > 1)
4566 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4567 "drivers per filesystem not supported\n", __func__);
4568
4569 /* Decode and set first layout type, move xdr->p past unused types */
4570 p = xdr_inline_decode(xdr, num * 4);
4571 if (unlikely(!p))
4572 goto out_overflow;
4573 *layouttype = be32_to_cpup(p);
4574 return 0;
4575 out_overflow:
4576 print_overflow_msg(__func__, xdr);
4577 return -EIO;
4578 }
4579
4580 /*
4581 * The type of file system exported.
4582 * Note we must ensure that layouttype is set in any non-error case.
4583 */
4584 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4585 uint32_t *layouttype)
4586 {
4587 int status = 0;
4588
4589 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4590 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4591 return -EIO;
4592 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4593 status = decode_first_pnfs_layout_type(xdr, layouttype);
4594 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4595 } else
4596 *layouttype = 0;
4597 return status;
4598 }
4599
4600 /*
4601 * The prefered block size for layout directed io
4602 */
4603 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4604 uint32_t *res)
4605 {
4606 __be32 *p;
4607
4608 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4609 *res = 0;
4610 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4611 p = xdr_inline_decode(xdr, 4);
4612 if (unlikely(!p)) {
4613 print_overflow_msg(__func__, xdr);
4614 return -EIO;
4615 }
4616 *res = be32_to_cpup(p);
4617 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4618 }
4619 return 0;
4620 }
4621
4622 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4623 {
4624 unsigned int savep;
4625 uint32_t attrlen, bitmap[3];
4626 int status;
4627
4628 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4629 goto xdr_error;
4630 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4631 goto xdr_error;
4632 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4633 goto xdr_error;
4634
4635 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4636
4637 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4638 goto xdr_error;
4639 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4640 goto xdr_error;
4641 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4642 goto xdr_error;
4643 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4644 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4645 goto xdr_error;
4646 fsinfo->wtpref = fsinfo->wtmax;
4647 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4648 if (status != 0)
4649 goto xdr_error;
4650 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4651 if (status != 0)
4652 goto xdr_error;
4653 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4654 if (status)
4655 goto xdr_error;
4656
4657 status = verify_attr_len(xdr, savep, attrlen);
4658 xdr_error:
4659 dprintk("%s: xdr returned %d!\n", __func__, -status);
4660 return status;
4661 }
4662
4663 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4664 {
4665 __be32 *p;
4666 uint32_t len;
4667 int status;
4668
4669 /* Zero handle first to allow comparisons */
4670 memset(fh, 0, sizeof(*fh));
4671
4672 status = decode_op_hdr(xdr, OP_GETFH);
4673 if (status)
4674 return status;
4675
4676 p = xdr_inline_decode(xdr, 4);
4677 if (unlikely(!p))
4678 goto out_overflow;
4679 len = be32_to_cpup(p);
4680 if (len > NFS4_FHSIZE)
4681 return -EIO;
4682 fh->size = len;
4683 p = xdr_inline_decode(xdr, len);
4684 if (unlikely(!p))
4685 goto out_overflow;
4686 memcpy(fh->data, p, len);
4687 return 0;
4688 out_overflow:
4689 print_overflow_msg(__func__, xdr);
4690 return -EIO;
4691 }
4692
4693 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4694 {
4695 int status;
4696
4697 status = decode_op_hdr(xdr, OP_LINK);
4698 if (status)
4699 return status;
4700 return decode_change_info(xdr, cinfo);
4701 }
4702
4703 /*
4704 * We create the owner, so we know a proper owner.id length is 4.
4705 */
4706 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4707 {
4708 uint64_t offset, length, clientid;
4709 __be32 *p;
4710 uint32_t namelen, type;
4711
4712 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4713 if (unlikely(!p))
4714 goto out_overflow;
4715 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4716 p = xdr_decode_hyper(p, &length);
4717 type = be32_to_cpup(p++); /* 4 byte read */
4718 if (fl != NULL) { /* manipulate file lock */
4719 fl->fl_start = (loff_t)offset;
4720 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4721 if (length == ~(uint64_t)0)
4722 fl->fl_end = OFFSET_MAX;
4723 fl->fl_type = F_WRLCK;
4724 if (type & 1)
4725 fl->fl_type = F_RDLCK;
4726 fl->fl_pid = 0;
4727 }
4728 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4729 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4730 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4731 if (likely(p))
4732 return -NFS4ERR_DENIED;
4733 out_overflow:
4734 print_overflow_msg(__func__, xdr);
4735 return -EIO;
4736 }
4737
4738 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4739 {
4740 int status;
4741
4742 status = decode_op_hdr(xdr, OP_LOCK);
4743 if (status == -EIO)
4744 goto out;
4745 if (status == 0) {
4746 status = decode_stateid(xdr, &res->stateid);
4747 if (unlikely(status))
4748 goto out;
4749 } else if (status == -NFS4ERR_DENIED)
4750 status = decode_lock_denied(xdr, NULL);
4751 if (res->open_seqid != NULL)
4752 nfs_increment_open_seqid(status, res->open_seqid);
4753 nfs_increment_lock_seqid(status, res->lock_seqid);
4754 out:
4755 return status;
4756 }
4757
4758 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4759 {
4760 int status;
4761 status = decode_op_hdr(xdr, OP_LOCKT);
4762 if (status == -NFS4ERR_DENIED)
4763 return decode_lock_denied(xdr, res->denied);
4764 return status;
4765 }
4766
4767 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4768 {
4769 int status;
4770
4771 status = decode_op_hdr(xdr, OP_LOCKU);
4772 if (status != -EIO)
4773 nfs_increment_lock_seqid(status, res->seqid);
4774 if (status == 0)
4775 status = decode_stateid(xdr, &res->stateid);
4776 return status;
4777 }
4778
4779 static int decode_release_lockowner(struct xdr_stream *xdr)
4780 {
4781 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4782 }
4783
4784 static int decode_lookup(struct xdr_stream *xdr)
4785 {
4786 return decode_op_hdr(xdr, OP_LOOKUP);
4787 }
4788
4789 /* This is too sick! */
4790 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4791 {
4792 __be32 *p;
4793 uint32_t limit_type, nblocks, blocksize;
4794
4795 p = xdr_inline_decode(xdr, 12);
4796 if (unlikely(!p))
4797 goto out_overflow;
4798 limit_type = be32_to_cpup(p++);
4799 switch (limit_type) {
4800 case 1:
4801 xdr_decode_hyper(p, maxsize);
4802 break;
4803 case 2:
4804 nblocks = be32_to_cpup(p++);
4805 blocksize = be32_to_cpup(p);
4806 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4807 }
4808 return 0;
4809 out_overflow:
4810 print_overflow_msg(__func__, xdr);
4811 return -EIO;
4812 }
4813
4814 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4815 {
4816 __be32 *p;
4817 uint32_t delegation_type;
4818 int status;
4819
4820 p = xdr_inline_decode(xdr, 4);
4821 if (unlikely(!p))
4822 goto out_overflow;
4823 delegation_type = be32_to_cpup(p);
4824 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4825 res->delegation_type = 0;
4826 return 0;
4827 }
4828 status = decode_stateid(xdr, &res->delegation);
4829 if (unlikely(status))
4830 return status;
4831 p = xdr_inline_decode(xdr, 4);
4832 if (unlikely(!p))
4833 goto out_overflow;
4834 res->do_recall = be32_to_cpup(p);
4835
4836 switch (delegation_type) {
4837 case NFS4_OPEN_DELEGATE_READ:
4838 res->delegation_type = FMODE_READ;
4839 break;
4840 case NFS4_OPEN_DELEGATE_WRITE:
4841 res->delegation_type = FMODE_WRITE|FMODE_READ;
4842 if (decode_space_limit(xdr, &res->maxsize) < 0)
4843 return -EIO;
4844 }
4845 return decode_ace(xdr, NULL, res->server->nfs_client);
4846 out_overflow:
4847 print_overflow_msg(__func__, xdr);
4848 return -EIO;
4849 }
4850
4851 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4852 {
4853 __be32 *p;
4854 uint32_t savewords, bmlen, i;
4855 int status;
4856
4857 status = decode_op_hdr(xdr, OP_OPEN);
4858 if (status != -EIO)
4859 nfs_increment_open_seqid(status, res->seqid);
4860 if (!status)
4861 status = decode_stateid(xdr, &res->stateid);
4862 if (unlikely(status))
4863 return status;
4864
4865 decode_change_info(xdr, &res->cinfo);
4866
4867 p = xdr_inline_decode(xdr, 8);
4868 if (unlikely(!p))
4869 goto out_overflow;
4870 res->rflags = be32_to_cpup(p++);
4871 bmlen = be32_to_cpup(p);
4872 if (bmlen > 10)
4873 goto xdr_error;
4874
4875 p = xdr_inline_decode(xdr, bmlen << 2);
4876 if (unlikely(!p))
4877 goto out_overflow;
4878 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4879 for (i = 0; i < savewords; ++i)
4880 res->attrset[i] = be32_to_cpup(p++);
4881 for (; i < NFS4_BITMAP_SIZE; i++)
4882 res->attrset[i] = 0;
4883
4884 return decode_delegation(xdr, res);
4885 xdr_error:
4886 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4887 return -EIO;
4888 out_overflow:
4889 print_overflow_msg(__func__, xdr);
4890 return -EIO;
4891 }
4892
4893 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4894 {
4895 int status;
4896
4897 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4898 if (status != -EIO)
4899 nfs_increment_open_seqid(status, res->seqid);
4900 if (!status)
4901 status = decode_stateid(xdr, &res->stateid);
4902 return status;
4903 }
4904
4905 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4906 {
4907 int status;
4908
4909 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4910 if (status != -EIO)
4911 nfs_increment_open_seqid(status, res->seqid);
4912 if (!status)
4913 status = decode_stateid(xdr, &res->stateid);
4914 return status;
4915 }
4916
4917 static int decode_putfh(struct xdr_stream *xdr)
4918 {
4919 return decode_op_hdr(xdr, OP_PUTFH);
4920 }
4921
4922 static int decode_putrootfh(struct xdr_stream *xdr)
4923 {
4924 return decode_op_hdr(xdr, OP_PUTROOTFH);
4925 }
4926
4927 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4928 {
4929 __be32 *p;
4930 uint32_t count, eof, recvd;
4931 int status;
4932
4933 status = decode_op_hdr(xdr, OP_READ);
4934 if (status)
4935 return status;
4936 p = xdr_inline_decode(xdr, 8);
4937 if (unlikely(!p))
4938 goto out_overflow;
4939 eof = be32_to_cpup(p++);
4940 count = be32_to_cpup(p);
4941 recvd = xdr_read_pages(xdr, count);
4942 if (count > recvd) {
4943 dprintk("NFS: server cheating in read reply: "
4944 "count %u > recvd %u\n", count, recvd);
4945 count = recvd;
4946 eof = 0;
4947 }
4948 res->eof = eof;
4949 res->count = count;
4950 return 0;
4951 out_overflow:
4952 print_overflow_msg(__func__, xdr);
4953 return -EIO;
4954 }
4955
4956 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4957 {
4958 int status;
4959 __be32 verf[2];
4960
4961 status = decode_op_hdr(xdr, OP_READDIR);
4962 if (!status)
4963 status = decode_verifier(xdr, readdir->verifier.data);
4964 if (unlikely(status))
4965 return status;
4966 memcpy(verf, readdir->verifier.data, sizeof(verf));
4967 dprintk("%s: verifier = %08x:%08x\n",
4968 __func__, verf[0], verf[1]);
4969 return xdr_read_pages(xdr, xdr->buf->page_len);
4970 }
4971
4972 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4973 {
4974 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4975 u32 len, recvd;
4976 __be32 *p;
4977 int status;
4978
4979 status = decode_op_hdr(xdr, OP_READLINK);
4980 if (status)
4981 return status;
4982
4983 /* Convert length of symlink */
4984 p = xdr_inline_decode(xdr, 4);
4985 if (unlikely(!p))
4986 goto out_overflow;
4987 len = be32_to_cpup(p);
4988 if (len >= rcvbuf->page_len || len <= 0) {
4989 dprintk("nfs: server returned giant symlink!\n");
4990 return -ENAMETOOLONG;
4991 }
4992 recvd = xdr_read_pages(xdr, len);
4993 if (recvd < len) {
4994 dprintk("NFS: server cheating in readlink reply: "
4995 "count %u > recvd %u\n", len, recvd);
4996 return -EIO;
4997 }
4998 /*
4999 * The XDR encode routine has set things up so that
5000 * the link text will be copied directly into the
5001 * buffer. We just have to do overflow-checking,
5002 * and and null-terminate the text (the VFS expects
5003 * null-termination).
5004 */
5005 xdr_terminate_string(rcvbuf, len);
5006 return 0;
5007 out_overflow:
5008 print_overflow_msg(__func__, xdr);
5009 return -EIO;
5010 }
5011
5012 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5013 {
5014 int status;
5015
5016 status = decode_op_hdr(xdr, OP_REMOVE);
5017 if (status)
5018 goto out;
5019 status = decode_change_info(xdr, cinfo);
5020 out:
5021 return status;
5022 }
5023
5024 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5025 struct nfs4_change_info *new_cinfo)
5026 {
5027 int status;
5028
5029 status = decode_op_hdr(xdr, OP_RENAME);
5030 if (status)
5031 goto out;
5032 if ((status = decode_change_info(xdr, old_cinfo)))
5033 goto out;
5034 status = decode_change_info(xdr, new_cinfo);
5035 out:
5036 return status;
5037 }
5038
5039 static int decode_renew(struct xdr_stream *xdr)
5040 {
5041 return decode_op_hdr(xdr, OP_RENEW);
5042 }
5043
5044 static int
5045 decode_restorefh(struct xdr_stream *xdr)
5046 {
5047 return decode_op_hdr(xdr, OP_RESTOREFH);
5048 }
5049
5050 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5051 struct nfs_getaclres *res)
5052 {
5053 unsigned int savep;
5054 __be32 *bm_p;
5055 uint32_t attrlen,
5056 bitmap[3] = {0};
5057 int status;
5058 size_t page_len = xdr->buf->page_len;
5059
5060 res->acl_len = 0;
5061 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5062 goto out;
5063
5064 bm_p = xdr->p;
5065 res->acl_data_offset = be32_to_cpup(bm_p) + 2;
5066 res->acl_data_offset <<= 2;
5067 /* Check if the acl data starts beyond the allocated buffer */
5068 if (res->acl_data_offset > page_len)
5069 return -ERANGE;
5070
5071 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5072 goto out;
5073 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5074 goto out;
5075
5076 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5077 return -EIO;
5078 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5079
5080 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5081 * are stored with the acl data to handle the problem of
5082 * variable length bitmaps.*/
5083 xdr->p = bm_p;
5084
5085 /* We ignore &savep and don't do consistency checks on
5086 * the attr length. Let userspace figure it out.... */
5087 attrlen += res->acl_data_offset;
5088 if (attrlen > page_len) {
5089 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) {
5090 /* getxattr interface called with a NULL buf */
5091 res->acl_len = attrlen;
5092 goto out;
5093 }
5094 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5095 attrlen, page_len);
5096 return -EINVAL;
5097 }
5098 xdr_read_pages(xdr, attrlen);
5099 res->acl_len = attrlen;
5100 } else
5101 status = -EOPNOTSUPP;
5102
5103 out:
5104 return status;
5105 }
5106
5107 static int
5108 decode_savefh(struct xdr_stream *xdr)
5109 {
5110 return decode_op_hdr(xdr, OP_SAVEFH);
5111 }
5112
5113 static int decode_setattr(struct xdr_stream *xdr)
5114 {
5115 __be32 *p;
5116 uint32_t bmlen;
5117 int status;
5118
5119 status = decode_op_hdr(xdr, OP_SETATTR);
5120 if (status)
5121 return status;
5122 p = xdr_inline_decode(xdr, 4);
5123 if (unlikely(!p))
5124 goto out_overflow;
5125 bmlen = be32_to_cpup(p);
5126 p = xdr_inline_decode(xdr, bmlen << 2);
5127 if (likely(p))
5128 return 0;
5129 out_overflow:
5130 print_overflow_msg(__func__, xdr);
5131 return -EIO;
5132 }
5133
5134 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5135 {
5136 __be32 *p;
5137 uint32_t opnum;
5138 int32_t nfserr;
5139
5140 p = xdr_inline_decode(xdr, 8);
5141 if (unlikely(!p))
5142 goto out_overflow;
5143 opnum = be32_to_cpup(p++);
5144 if (opnum != OP_SETCLIENTID) {
5145 dprintk("nfs: decode_setclientid: Server returned operation"
5146 " %d\n", opnum);
5147 return -EIO;
5148 }
5149 nfserr = be32_to_cpup(p);
5150 if (nfserr == NFS_OK) {
5151 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5152 if (unlikely(!p))
5153 goto out_overflow;
5154 p = xdr_decode_hyper(p, &res->clientid);
5155 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5156 } else if (nfserr == NFSERR_CLID_INUSE) {
5157 uint32_t len;
5158
5159 /* skip netid string */
5160 p = xdr_inline_decode(xdr, 4);
5161 if (unlikely(!p))
5162 goto out_overflow;
5163 len = be32_to_cpup(p);
5164 p = xdr_inline_decode(xdr, len);
5165 if (unlikely(!p))
5166 goto out_overflow;
5167
5168 /* skip uaddr string */
5169 p = xdr_inline_decode(xdr, 4);
5170 if (unlikely(!p))
5171 goto out_overflow;
5172 len = be32_to_cpup(p);
5173 p = xdr_inline_decode(xdr, len);
5174 if (unlikely(!p))
5175 goto out_overflow;
5176 return -NFSERR_CLID_INUSE;
5177 } else
5178 return nfs4_stat_to_errno(nfserr);
5179
5180 return 0;
5181 out_overflow:
5182 print_overflow_msg(__func__, xdr);
5183 return -EIO;
5184 }
5185
5186 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5187 {
5188 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5189 }
5190
5191 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5192 {
5193 __be32 *p;
5194 int status;
5195
5196 status = decode_op_hdr(xdr, OP_WRITE);
5197 if (status)
5198 return status;
5199
5200 p = xdr_inline_decode(xdr, 8);
5201 if (unlikely(!p))
5202 goto out_overflow;
5203 res->count = be32_to_cpup(p++);
5204 res->verf->committed = be32_to_cpup(p++);
5205 return decode_write_verifier(xdr, &res->verf->verifier);
5206 out_overflow:
5207 print_overflow_msg(__func__, xdr);
5208 return -EIO;
5209 }
5210
5211 static int decode_delegreturn(struct xdr_stream *xdr)
5212 {
5213 return decode_op_hdr(xdr, OP_DELEGRETURN);
5214 }
5215
5216 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5217 {
5218 __be32 *p;
5219
5220 p = xdr_inline_decode(xdr, 4);
5221 if (unlikely(!p))
5222 goto out_overflow;
5223 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5224 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5225 goto out_err;
5226
5227 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5228 if (unlikely(!p))
5229 goto out_overflow;
5230 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5231
5232 p = xdr_inline_decode(xdr, 8);
5233 if (unlikely(!p))
5234 goto out_overflow;
5235 flavor->gss.qop4 = be32_to_cpup(p++);
5236 flavor->gss.service = be32_to_cpup(p);
5237
5238 return 0;
5239
5240 out_overflow:
5241 print_overflow_msg(__func__, xdr);
5242 return -EIO;
5243 out_err:
5244 return -EINVAL;
5245 }
5246
5247 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5248 {
5249 struct nfs4_secinfo_flavor *sec_flavor;
5250 int status;
5251 __be32 *p;
5252 int i, num_flavors;
5253
5254 p = xdr_inline_decode(xdr, 4);
5255 if (unlikely(!p))
5256 goto out_overflow;
5257
5258 res->flavors->num_flavors = 0;
5259 num_flavors = be32_to_cpup(p);
5260
5261 for (i = 0; i < num_flavors; i++) {
5262 sec_flavor = &res->flavors->flavors[i];
5263 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5264 break;
5265
5266 p = xdr_inline_decode(xdr, 4);
5267 if (unlikely(!p))
5268 goto out_overflow;
5269 sec_flavor->flavor = be32_to_cpup(p);
5270
5271 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5272 status = decode_secinfo_gss(xdr, sec_flavor);
5273 if (status)
5274 goto out;
5275 }
5276 res->flavors->num_flavors++;
5277 }
5278
5279 status = 0;
5280 out:
5281 return status;
5282 out_overflow:
5283 print_overflow_msg(__func__, xdr);
5284 return -EIO;
5285 }
5286
5287 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5288 {
5289 int status = decode_op_hdr(xdr, OP_SECINFO);
5290 if (status)
5291 return status;
5292 return decode_secinfo_common(xdr, res);
5293 }
5294
5295 #if defined(CONFIG_NFS_V4_1)
5296 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5297 {
5298 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5299 if (status)
5300 return status;
5301 return decode_secinfo_common(xdr, res);
5302 }
5303
5304 static int decode_exchange_id(struct xdr_stream *xdr,
5305 struct nfs41_exchange_id_res *res)
5306 {
5307 __be32 *p;
5308 uint32_t dummy;
5309 char *dummy_str;
5310 int status;
5311 uint32_t impl_id_count;
5312
5313 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5314 if (status)
5315 return status;
5316
5317 p = xdr_inline_decode(xdr, 8);
5318 if (unlikely(!p))
5319 goto out_overflow;
5320 xdr_decode_hyper(p, &res->clientid);
5321 p = xdr_inline_decode(xdr, 12);
5322 if (unlikely(!p))
5323 goto out_overflow;
5324 res->seqid = be32_to_cpup(p++);
5325 res->flags = be32_to_cpup(p++);
5326
5327 /* We ask for SP4_NONE */
5328 dummy = be32_to_cpup(p);
5329 if (dummy != SP4_NONE)
5330 return -EIO;
5331
5332 /* server_owner4.so_minor_id */
5333 p = xdr_inline_decode(xdr, 8);
5334 if (unlikely(!p))
5335 goto out_overflow;
5336 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5337
5338 /* server_owner4.so_major_id */
5339 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5340 if (unlikely(status))
5341 return status;
5342 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5343 return -EIO;
5344 memcpy(res->server_owner->major_id, dummy_str, dummy);
5345 res->server_owner->major_id_sz = dummy;
5346
5347 /* server_scope4 */
5348 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5349 if (unlikely(status))
5350 return status;
5351 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5352 return -EIO;
5353 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5354 res->server_scope->server_scope_sz = dummy;
5355
5356 /* Implementation Id */
5357 p = xdr_inline_decode(xdr, 4);
5358 if (unlikely(!p))
5359 goto out_overflow;
5360 impl_id_count = be32_to_cpup(p++);
5361
5362 if (impl_id_count) {
5363 /* nii_domain */
5364 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5365 if (unlikely(status))
5366 return status;
5367 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5368 return -EIO;
5369 memcpy(res->impl_id->domain, dummy_str, dummy);
5370
5371 /* nii_name */
5372 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5373 if (unlikely(status))
5374 return status;
5375 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5376 return -EIO;
5377 memcpy(res->impl_id->name, dummy_str, dummy);
5378
5379 /* nii_date */
5380 p = xdr_inline_decode(xdr, 12);
5381 if (unlikely(!p))
5382 goto out_overflow;
5383 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5384 res->impl_id->date.nseconds = be32_to_cpup(p);
5385
5386 /* if there's more than one entry, ignore the rest */
5387 }
5388 return 0;
5389 out_overflow:
5390 print_overflow_msg(__func__, xdr);
5391 return -EIO;
5392 }
5393
5394 static int decode_chan_attrs(struct xdr_stream *xdr,
5395 struct nfs4_channel_attrs *attrs)
5396 {
5397 __be32 *p;
5398 u32 nr_attrs, val;
5399
5400 p = xdr_inline_decode(xdr, 28);
5401 if (unlikely(!p))
5402 goto out_overflow;
5403 val = be32_to_cpup(p++); /* headerpadsz */
5404 if (val)
5405 return -EINVAL; /* no support for header padding yet */
5406 attrs->max_rqst_sz = be32_to_cpup(p++);
5407 attrs->max_resp_sz = be32_to_cpup(p++);
5408 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5409 attrs->max_ops = be32_to_cpup(p++);
5410 attrs->max_reqs = be32_to_cpup(p++);
5411 nr_attrs = be32_to_cpup(p);
5412 if (unlikely(nr_attrs > 1)) {
5413 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5414 "count %u\n", __func__, nr_attrs);
5415 return -EINVAL;
5416 }
5417 if (nr_attrs == 1) {
5418 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5419 if (unlikely(!p))
5420 goto out_overflow;
5421 }
5422 return 0;
5423 out_overflow:
5424 print_overflow_msg(__func__, xdr);
5425 return -EIO;
5426 }
5427
5428 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5429 {
5430 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5431 }
5432
5433 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5434 struct nfs41_bind_conn_to_session_res *res)
5435 {
5436 __be32 *p;
5437 int status;
5438
5439 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5440 if (!status)
5441 status = decode_sessionid(xdr, &res->session->sess_id);
5442 if (unlikely(status))
5443 return status;
5444
5445 /* dir flags, rdma mode bool */
5446 p = xdr_inline_decode(xdr, 8);
5447 if (unlikely(!p))
5448 goto out_overflow;
5449
5450 res->dir = be32_to_cpup(p++);
5451 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5452 return -EIO;
5453 if (be32_to_cpup(p) == 0)
5454 res->use_conn_in_rdma_mode = false;
5455 else
5456 res->use_conn_in_rdma_mode = true;
5457
5458 return 0;
5459 out_overflow:
5460 print_overflow_msg(__func__, xdr);
5461 return -EIO;
5462 }
5463
5464 static int decode_create_session(struct xdr_stream *xdr,
5465 struct nfs41_create_session_res *res)
5466 {
5467 __be32 *p;
5468 int status;
5469 struct nfs_client *clp = res->client;
5470 struct nfs4_session *session = clp->cl_session;
5471
5472 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5473 if (!status)
5474 status = decode_sessionid(xdr, &session->sess_id);
5475 if (unlikely(status))
5476 return status;
5477
5478 /* seqid, flags */
5479 p = xdr_inline_decode(xdr, 8);
5480 if (unlikely(!p))
5481 goto out_overflow;
5482 clp->cl_seqid = be32_to_cpup(p++);
5483 session->flags = be32_to_cpup(p);
5484
5485 /* Channel attributes */
5486 status = decode_chan_attrs(xdr, &session->fc_attrs);
5487 if (!status)
5488 status = decode_chan_attrs(xdr, &session->bc_attrs);
5489 return status;
5490 out_overflow:
5491 print_overflow_msg(__func__, xdr);
5492 return -EIO;
5493 }
5494
5495 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5496 {
5497 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5498 }
5499
5500 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5501 {
5502 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5503 }
5504
5505 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5506 {
5507 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5508 }
5509 #endif /* CONFIG_NFS_V4_1 */
5510
5511 static int decode_sequence(struct xdr_stream *xdr,
5512 struct nfs4_sequence_res *res,
5513 struct rpc_rqst *rqstp)
5514 {
5515 #if defined(CONFIG_NFS_V4_1)
5516 struct nfs4_sessionid id;
5517 u32 dummy;
5518 int status;
5519 __be32 *p;
5520
5521 if (!res->sr_session)
5522 return 0;
5523
5524 status = decode_op_hdr(xdr, OP_SEQUENCE);
5525 if (!status)
5526 status = decode_sessionid(xdr, &id);
5527 if (unlikely(status))
5528 goto out_err;
5529
5530 /*
5531 * If the server returns different values for sessionID, slotID or
5532 * sequence number, the server is looney tunes.
5533 */
5534 status = -EREMOTEIO;
5535
5536 if (memcmp(id.data, res->sr_session->sess_id.data,
5537 NFS4_MAX_SESSIONID_LEN)) {
5538 dprintk("%s Invalid session id\n", __func__);
5539 goto out_err;
5540 }
5541
5542 p = xdr_inline_decode(xdr, 20);
5543 if (unlikely(!p))
5544 goto out_overflow;
5545
5546 /* seqid */
5547 dummy = be32_to_cpup(p++);
5548 if (dummy != res->sr_slot->seq_nr) {
5549 dprintk("%s Invalid sequence number\n", __func__);
5550 goto out_err;
5551 }
5552 /* slot id */
5553 dummy = be32_to_cpup(p++);
5554 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5555 dprintk("%s Invalid slot id\n", __func__);
5556 goto out_err;
5557 }
5558 /* highest slot id - currently not processed */
5559 dummy = be32_to_cpup(p++);
5560 /* target highest slot id - currently not processed */
5561 dummy = be32_to_cpup(p++);
5562 /* result flags */
5563 res->sr_status_flags = be32_to_cpup(p);
5564 status = 0;
5565 out_err:
5566 res->sr_status = status;
5567 return status;
5568 out_overflow:
5569 print_overflow_msg(__func__, xdr);
5570 status = -EIO;
5571 goto out_err;
5572 #else /* CONFIG_NFS_V4_1 */
5573 return 0;
5574 #endif /* CONFIG_NFS_V4_1 */
5575 }
5576
5577 #if defined(CONFIG_NFS_V4_1)
5578 /*
5579 * TODO: Need to handle case when EOF != true;
5580 */
5581 static int decode_getdevicelist(struct xdr_stream *xdr,
5582 struct pnfs_devicelist *res)
5583 {
5584 __be32 *p;
5585 int status, i;
5586 nfs4_verifier verftemp;
5587
5588 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5589 if (status)
5590 return status;
5591
5592 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5593 if (unlikely(!p))
5594 goto out_overflow;
5595
5596 /* TODO: Skip cookie for now */
5597 p += 2;
5598
5599 /* Read verifier */
5600 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5601
5602 res->num_devs = be32_to_cpup(p);
5603
5604 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5605
5606 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5607 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5608 __func__, res->num_devs);
5609 return -EIO;
5610 }
5611
5612 p = xdr_inline_decode(xdr,
5613 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5614 if (unlikely(!p))
5615 goto out_overflow;
5616 for (i = 0; i < res->num_devs; i++)
5617 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5618 NFS4_DEVICEID4_SIZE);
5619 res->eof = be32_to_cpup(p);
5620 return 0;
5621 out_overflow:
5622 print_overflow_msg(__func__, xdr);
5623 return -EIO;
5624 }
5625
5626 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5627 struct pnfs_device *pdev)
5628 {
5629 __be32 *p;
5630 uint32_t len, type;
5631 int status;
5632
5633 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5634 if (status) {
5635 if (status == -ETOOSMALL) {
5636 p = xdr_inline_decode(xdr, 4);
5637 if (unlikely(!p))
5638 goto out_overflow;
5639 pdev->mincount = be32_to_cpup(p);
5640 dprintk("%s: Min count too small. mincnt = %u\n",
5641 __func__, pdev->mincount);
5642 }
5643 return status;
5644 }
5645
5646 p = xdr_inline_decode(xdr, 8);
5647 if (unlikely(!p))
5648 goto out_overflow;
5649 type = be32_to_cpup(p++);
5650 if (type != pdev->layout_type) {
5651 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5652 __func__, pdev->layout_type, type);
5653 return -EINVAL;
5654 }
5655 /*
5656 * Get the length of the opaque device_addr4. xdr_read_pages places
5657 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5658 * and places the remaining xdr data in xdr_buf->tail
5659 */
5660 pdev->mincount = be32_to_cpup(p);
5661 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5662
5663 /* Parse notification bitmap, verifying that it is zero. */
5664 p = xdr_inline_decode(xdr, 4);
5665 if (unlikely(!p))
5666 goto out_overflow;
5667 len = be32_to_cpup(p);
5668 if (len) {
5669 uint32_t i;
5670
5671 p = xdr_inline_decode(xdr, 4 * len);
5672 if (unlikely(!p))
5673 goto out_overflow;
5674 for (i = 0; i < len; i++, p++) {
5675 if (be32_to_cpup(p)) {
5676 dprintk("%s: notifications not supported\n",
5677 __func__);
5678 return -EIO;
5679 }
5680 }
5681 }
5682 return 0;
5683 out_overflow:
5684 print_overflow_msg(__func__, xdr);
5685 return -EIO;
5686 }
5687
5688 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5689 struct nfs4_layoutget_res *res)
5690 {
5691 __be32 *p;
5692 int status;
5693 u32 layout_count;
5694 u32 recvd;
5695
5696 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5697 if (status)
5698 return status;
5699 p = xdr_inline_decode(xdr, 4);
5700 if (unlikely(!p))
5701 goto out_overflow;
5702 res->return_on_close = be32_to_cpup(p);
5703 decode_stateid(xdr, &res->stateid);
5704 p = xdr_inline_decode(xdr, 4);
5705 if (unlikely(!p))
5706 goto out_overflow;
5707 layout_count = be32_to_cpup(p);
5708 if (!layout_count) {
5709 dprintk("%s: server responded with empty layout array\n",
5710 __func__);
5711 return -EINVAL;
5712 }
5713
5714 p = xdr_inline_decode(xdr, 28);
5715 if (unlikely(!p))
5716 goto out_overflow;
5717 p = xdr_decode_hyper(p, &res->range.offset);
5718 p = xdr_decode_hyper(p, &res->range.length);
5719 res->range.iomode = be32_to_cpup(p++);
5720 res->type = be32_to_cpup(p++);
5721 res->layoutp->len = be32_to_cpup(p);
5722
5723 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5724 __func__,
5725 (unsigned long)res->range.offset,
5726 (unsigned long)res->range.length,
5727 res->range.iomode,
5728 res->type,
5729 res->layoutp->len);
5730
5731 recvd = xdr_read_pages(xdr, res->layoutp->len);
5732 if (res->layoutp->len > recvd) {
5733 dprintk("NFS: server cheating in layoutget reply: "
5734 "layout len %u > recvd %u\n",
5735 res->layoutp->len, recvd);
5736 return -EINVAL;
5737 }
5738
5739 if (layout_count > 1) {
5740 /* We only handle a length one array at the moment. Any
5741 * further entries are just ignored. Note that this means
5742 * the client may see a response that is less than the
5743 * minimum it requested.
5744 */
5745 dprintk("%s: server responded with %d layouts, dropping tail\n",
5746 __func__, layout_count);
5747 }
5748
5749 return 0;
5750 out_overflow:
5751 print_overflow_msg(__func__, xdr);
5752 return -EIO;
5753 }
5754
5755 static int decode_layoutreturn(struct xdr_stream *xdr,
5756 struct nfs4_layoutreturn_res *res)
5757 {
5758 __be32 *p;
5759 int status;
5760
5761 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5762 if (status)
5763 return status;
5764 p = xdr_inline_decode(xdr, 4);
5765 if (unlikely(!p))
5766 goto out_overflow;
5767 res->lrs_present = be32_to_cpup(p);
5768 if (res->lrs_present)
5769 status = decode_stateid(xdr, &res->stateid);
5770 return status;
5771 out_overflow:
5772 print_overflow_msg(__func__, xdr);
5773 return -EIO;
5774 }
5775
5776 static int decode_layoutcommit(struct xdr_stream *xdr,
5777 struct rpc_rqst *req,
5778 struct nfs4_layoutcommit_res *res)
5779 {
5780 __be32 *p;
5781 __u32 sizechanged;
5782 int status;
5783
5784 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5785 res->status = status;
5786 if (status)
5787 return status;
5788
5789 p = xdr_inline_decode(xdr, 4);
5790 if (unlikely(!p))
5791 goto out_overflow;
5792 sizechanged = be32_to_cpup(p);
5793
5794 if (sizechanged) {
5795 /* throw away new size */
5796 p = xdr_inline_decode(xdr, 8);
5797 if (unlikely(!p))
5798 goto out_overflow;
5799 }
5800 return 0;
5801 out_overflow:
5802 print_overflow_msg(__func__, xdr);
5803 return -EIO;
5804 }
5805
5806 static int decode_test_stateid(struct xdr_stream *xdr,
5807 struct nfs41_test_stateid_res *res)
5808 {
5809 __be32 *p;
5810 int status;
5811 int num_res;
5812
5813 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5814 if (status)
5815 return status;
5816
5817 p = xdr_inline_decode(xdr, 4);
5818 if (unlikely(!p))
5819 goto out_overflow;
5820 num_res = be32_to_cpup(p++);
5821 if (num_res != 1)
5822 goto out;
5823
5824 p = xdr_inline_decode(xdr, 4);
5825 if (unlikely(!p))
5826 goto out_overflow;
5827 res->status = be32_to_cpup(p++);
5828
5829 return status;
5830 out_overflow:
5831 print_overflow_msg(__func__, xdr);
5832 out:
5833 return -EIO;
5834 }
5835
5836 static int decode_free_stateid(struct xdr_stream *xdr,
5837 struct nfs41_free_stateid_res *res)
5838 {
5839 __be32 *p;
5840 int status;
5841
5842 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5843 if (status)
5844 return status;
5845
5846 p = xdr_inline_decode(xdr, 4);
5847 if (unlikely(!p))
5848 goto out_overflow;
5849 res->status = be32_to_cpup(p++);
5850 return res->status;
5851 out_overflow:
5852 print_overflow_msg(__func__, xdr);
5853 return -EIO;
5854 }
5855 #endif /* CONFIG_NFS_V4_1 */
5856
5857 /*
5858 * END OF "GENERIC" DECODE ROUTINES.
5859 */
5860
5861 /*
5862 * Decode OPEN_DOWNGRADE response
5863 */
5864 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5865 struct xdr_stream *xdr,
5866 struct nfs_closeres *res)
5867 {
5868 struct compound_hdr hdr;
5869 int status;
5870
5871 status = decode_compound_hdr(xdr, &hdr);
5872 if (status)
5873 goto out;
5874 status = decode_sequence(xdr, &res->seq_res, rqstp);
5875 if (status)
5876 goto out;
5877 status = decode_putfh(xdr);
5878 if (status)
5879 goto out;
5880 status = decode_open_downgrade(xdr, res);
5881 if (status != 0)
5882 goto out;
5883 decode_getfattr(xdr, res->fattr, res->server);
5884 out:
5885 return status;
5886 }
5887
5888 /*
5889 * Decode ACCESS response
5890 */
5891 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5892 struct nfs4_accessres *res)
5893 {
5894 struct compound_hdr hdr;
5895 int status;
5896
5897 status = decode_compound_hdr(xdr, &hdr);
5898 if (status)
5899 goto out;
5900 status = decode_sequence(xdr, &res->seq_res, rqstp);
5901 if (status)
5902 goto out;
5903 status = decode_putfh(xdr);
5904 if (status != 0)
5905 goto out;
5906 status = decode_access(xdr, res);
5907 if (status != 0)
5908 goto out;
5909 decode_getfattr(xdr, res->fattr, res->server);
5910 out:
5911 return status;
5912 }
5913
5914 /*
5915 * Decode LOOKUP response
5916 */
5917 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5918 struct nfs4_lookup_res *res)
5919 {
5920 struct compound_hdr hdr;
5921 int status;
5922
5923 status = decode_compound_hdr(xdr, &hdr);
5924 if (status)
5925 goto out;
5926 status = decode_sequence(xdr, &res->seq_res, rqstp);
5927 if (status)
5928 goto out;
5929 status = decode_putfh(xdr);
5930 if (status)
5931 goto out;
5932 status = decode_lookup(xdr);
5933 if (status)
5934 goto out;
5935 status = decode_getfh(xdr, res->fh);
5936 if (status)
5937 goto out;
5938 status = decode_getfattr(xdr, res->fattr, res->server);
5939 out:
5940 return status;
5941 }
5942
5943 /*
5944 * Decode LOOKUP_ROOT response
5945 */
5946 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5947 struct xdr_stream *xdr,
5948 struct nfs4_lookup_res *res)
5949 {
5950 struct compound_hdr hdr;
5951 int status;
5952
5953 status = decode_compound_hdr(xdr, &hdr);
5954 if (status)
5955 goto out;
5956 status = decode_sequence(xdr, &res->seq_res, rqstp);
5957 if (status)
5958 goto out;
5959 status = decode_putrootfh(xdr);
5960 if (status)
5961 goto out;
5962 status = decode_getfh(xdr, res->fh);
5963 if (status == 0)
5964 status = decode_getfattr(xdr, res->fattr, res->server);
5965 out:
5966 return status;
5967 }
5968
5969 /*
5970 * Decode REMOVE response
5971 */
5972 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5973 struct nfs_removeres *res)
5974 {
5975 struct compound_hdr hdr;
5976 int status;
5977
5978 status = decode_compound_hdr(xdr, &hdr);
5979 if (status)
5980 goto out;
5981 status = decode_sequence(xdr, &res->seq_res, rqstp);
5982 if (status)
5983 goto out;
5984 status = decode_putfh(xdr);
5985 if (status)
5986 goto out;
5987 status = decode_remove(xdr, &res->cinfo);
5988 out:
5989 return status;
5990 }
5991
5992 /*
5993 * Decode RENAME response
5994 */
5995 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5996 struct nfs_renameres *res)
5997 {
5998 struct compound_hdr hdr;
5999 int status;
6000
6001 status = decode_compound_hdr(xdr, &hdr);
6002 if (status)
6003 goto out;
6004 status = decode_sequence(xdr, &res->seq_res, rqstp);
6005 if (status)
6006 goto out;
6007 status = decode_putfh(xdr);
6008 if (status)
6009 goto out;
6010 status = decode_savefh(xdr);
6011 if (status)
6012 goto out;
6013 status = decode_putfh(xdr);
6014 if (status)
6015 goto out;
6016 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6017 out:
6018 return status;
6019 }
6020
6021 /*
6022 * Decode LINK response
6023 */
6024 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6025 struct nfs4_link_res *res)
6026 {
6027 struct compound_hdr hdr;
6028 int status;
6029
6030 status = decode_compound_hdr(xdr, &hdr);
6031 if (status)
6032 goto out;
6033 status = decode_sequence(xdr, &res->seq_res, rqstp);
6034 if (status)
6035 goto out;
6036 status = decode_putfh(xdr);
6037 if (status)
6038 goto out;
6039 status = decode_savefh(xdr);
6040 if (status)
6041 goto out;
6042 status = decode_putfh(xdr);
6043 if (status)
6044 goto out;
6045 status = decode_link(xdr, &res->cinfo);
6046 if (status)
6047 goto out;
6048 /*
6049 * Note order: OP_LINK leaves the directory as the current
6050 * filehandle.
6051 */
6052 status = decode_restorefh(xdr);
6053 if (status)
6054 goto out;
6055 decode_getfattr(xdr, res->fattr, res->server);
6056 out:
6057 return status;
6058 }
6059
6060 /*
6061 * Decode CREATE response
6062 */
6063 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6064 struct nfs4_create_res *res)
6065 {
6066 struct compound_hdr hdr;
6067 int status;
6068
6069 status = decode_compound_hdr(xdr, &hdr);
6070 if (status)
6071 goto out;
6072 status = decode_sequence(xdr, &res->seq_res, rqstp);
6073 if (status)
6074 goto out;
6075 status = decode_putfh(xdr);
6076 if (status)
6077 goto out;
6078 status = decode_create(xdr, &res->dir_cinfo);
6079 if (status)
6080 goto out;
6081 status = decode_getfh(xdr, res->fh);
6082 if (status)
6083 goto out;
6084 decode_getfattr(xdr, res->fattr, res->server);
6085 out:
6086 return status;
6087 }
6088
6089 /*
6090 * Decode SYMLINK response
6091 */
6092 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6093 struct nfs4_create_res *res)
6094 {
6095 return nfs4_xdr_dec_create(rqstp, xdr, res);
6096 }
6097
6098 /*
6099 * Decode GETATTR response
6100 */
6101 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6102 struct nfs4_getattr_res *res)
6103 {
6104 struct compound_hdr hdr;
6105 int status;
6106
6107 status = decode_compound_hdr(xdr, &hdr);
6108 if (status)
6109 goto out;
6110 status = decode_sequence(xdr, &res->seq_res, rqstp);
6111 if (status)
6112 goto out;
6113 status = decode_putfh(xdr);
6114 if (status)
6115 goto out;
6116 status = decode_getfattr(xdr, res->fattr, res->server);
6117 out:
6118 return status;
6119 }
6120
6121 /*
6122 * Encode an SETACL request
6123 */
6124 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6125 struct nfs_setaclargs *args)
6126 {
6127 struct compound_hdr hdr = {
6128 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6129 };
6130
6131 encode_compound_hdr(xdr, req, &hdr);
6132 encode_sequence(xdr, &args->seq_args, &hdr);
6133 encode_putfh(xdr, args->fh, &hdr);
6134 encode_setacl(xdr, args, &hdr);
6135 encode_nops(&hdr);
6136 }
6137
6138 /*
6139 * Decode SETACL response
6140 */
6141 static int
6142 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6143 struct nfs_setaclres *res)
6144 {
6145 struct compound_hdr hdr;
6146 int status;
6147
6148 status = decode_compound_hdr(xdr, &hdr);
6149 if (status)
6150 goto out;
6151 status = decode_sequence(xdr, &res->seq_res, rqstp);
6152 if (status)
6153 goto out;
6154 status = decode_putfh(xdr);
6155 if (status)
6156 goto out;
6157 status = decode_setattr(xdr);
6158 out:
6159 return status;
6160 }
6161
6162 /*
6163 * Decode GETACL response
6164 */
6165 static int
6166 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6167 struct nfs_getaclres *res)
6168 {
6169 struct compound_hdr hdr;
6170 int status;
6171
6172 if (res->acl_scratch != NULL) {
6173 void *p = page_address(res->acl_scratch);
6174 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6175 }
6176 status = decode_compound_hdr(xdr, &hdr);
6177 if (status)
6178 goto out;
6179 status = decode_sequence(xdr, &res->seq_res, rqstp);
6180 if (status)
6181 goto out;
6182 status = decode_putfh(xdr);
6183 if (status)
6184 goto out;
6185 status = decode_getacl(xdr, rqstp, res);
6186
6187 out:
6188 return status;
6189 }
6190
6191 /*
6192 * Decode CLOSE response
6193 */
6194 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6195 struct nfs_closeres *res)
6196 {
6197 struct compound_hdr hdr;
6198 int status;
6199
6200 status = decode_compound_hdr(xdr, &hdr);
6201 if (status)
6202 goto out;
6203 status = decode_sequence(xdr, &res->seq_res, rqstp);
6204 if (status)
6205 goto out;
6206 status = decode_putfh(xdr);
6207 if (status)
6208 goto out;
6209 status = decode_close(xdr, res);
6210 if (status != 0)
6211 goto out;
6212 /*
6213 * Note: Server may do delete on close for this file
6214 * in which case the getattr call will fail with
6215 * an ESTALE error. Shouldn't be a problem,
6216 * though, since fattr->valid will remain unset.
6217 */
6218 decode_getfattr(xdr, res->fattr, res->server);
6219 out:
6220 return status;
6221 }
6222
6223 /*
6224 * Decode OPEN response
6225 */
6226 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6227 struct nfs_openres *res)
6228 {
6229 struct compound_hdr hdr;
6230 int status;
6231
6232 status = decode_compound_hdr(xdr, &hdr);
6233 if (status)
6234 goto out;
6235 status = decode_sequence(xdr, &res->seq_res, rqstp);
6236 if (status)
6237 goto out;
6238 status = decode_putfh(xdr);
6239 if (status)
6240 goto out;
6241 status = decode_open(xdr, res);
6242 if (status)
6243 goto out;
6244 if (decode_getfh(xdr, &res->fh) != 0)
6245 goto out;
6246 decode_getfattr(xdr, res->f_attr, res->server);
6247 out:
6248 return status;
6249 }
6250
6251 /*
6252 * Decode OPEN_CONFIRM response
6253 */
6254 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6255 struct xdr_stream *xdr,
6256 struct nfs_open_confirmres *res)
6257 {
6258 struct compound_hdr hdr;
6259 int status;
6260
6261 status = decode_compound_hdr(xdr, &hdr);
6262 if (status)
6263 goto out;
6264 status = decode_putfh(xdr);
6265 if (status)
6266 goto out;
6267 status = decode_open_confirm(xdr, res);
6268 out:
6269 return status;
6270 }
6271
6272 /*
6273 * Decode OPEN response
6274 */
6275 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6276 struct xdr_stream *xdr,
6277 struct nfs_openres *res)
6278 {
6279 struct compound_hdr hdr;
6280 int status;
6281
6282 status = decode_compound_hdr(xdr, &hdr);
6283 if (status)
6284 goto out;
6285 status = decode_sequence(xdr, &res->seq_res, rqstp);
6286 if (status)
6287 goto out;
6288 status = decode_putfh(xdr);
6289 if (status)
6290 goto out;
6291 status = decode_open(xdr, res);
6292 if (status)
6293 goto out;
6294 decode_getfattr(xdr, res->f_attr, res->server);
6295 out:
6296 return status;
6297 }
6298
6299 /*
6300 * Decode SETATTR response
6301 */
6302 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6303 struct xdr_stream *xdr,
6304 struct nfs_setattrres *res)
6305 {
6306 struct compound_hdr hdr;
6307 int status;
6308
6309 status = decode_compound_hdr(xdr, &hdr);
6310 if (status)
6311 goto out;
6312 status = decode_sequence(xdr, &res->seq_res, rqstp);
6313 if (status)
6314 goto out;
6315 status = decode_putfh(xdr);
6316 if (status)
6317 goto out;
6318 status = decode_setattr(xdr);
6319 if (status)
6320 goto out;
6321 decode_getfattr(xdr, res->fattr, res->server);
6322 out:
6323 return status;
6324 }
6325
6326 /*
6327 * Decode LOCK response
6328 */
6329 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6330 struct nfs_lock_res *res)
6331 {
6332 struct compound_hdr hdr;
6333 int status;
6334
6335 status = decode_compound_hdr(xdr, &hdr);
6336 if (status)
6337 goto out;
6338 status = decode_sequence(xdr, &res->seq_res, rqstp);
6339 if (status)
6340 goto out;
6341 status = decode_putfh(xdr);
6342 if (status)
6343 goto out;
6344 status = decode_lock(xdr, res);
6345 out:
6346 return status;
6347 }
6348
6349 /*
6350 * Decode LOCKT response
6351 */
6352 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6353 struct nfs_lockt_res *res)
6354 {
6355 struct compound_hdr hdr;
6356 int status;
6357
6358 status = decode_compound_hdr(xdr, &hdr);
6359 if (status)
6360 goto out;
6361 status = decode_sequence(xdr, &res->seq_res, rqstp);
6362 if (status)
6363 goto out;
6364 status = decode_putfh(xdr);
6365 if (status)
6366 goto out;
6367 status = decode_lockt(xdr, res);
6368 out:
6369 return status;
6370 }
6371
6372 /*
6373 * Decode LOCKU response
6374 */
6375 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6376 struct nfs_locku_res *res)
6377 {
6378 struct compound_hdr hdr;
6379 int status;
6380
6381 status = decode_compound_hdr(xdr, &hdr);
6382 if (status)
6383 goto out;
6384 status = decode_sequence(xdr, &res->seq_res, rqstp);
6385 if (status)
6386 goto out;
6387 status = decode_putfh(xdr);
6388 if (status)
6389 goto out;
6390 status = decode_locku(xdr, res);
6391 out:
6392 return status;
6393 }
6394
6395 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6396 struct xdr_stream *xdr, void *dummy)
6397 {
6398 struct compound_hdr hdr;
6399 int status;
6400
6401 status = decode_compound_hdr(xdr, &hdr);
6402 if (!status)
6403 status = decode_release_lockowner(xdr);
6404 return status;
6405 }
6406
6407 /*
6408 * Decode READLINK response
6409 */
6410 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6411 struct xdr_stream *xdr,
6412 struct nfs4_readlink_res *res)
6413 {
6414 struct compound_hdr hdr;
6415 int status;
6416
6417 status = decode_compound_hdr(xdr, &hdr);
6418 if (status)
6419 goto out;
6420 status = decode_sequence(xdr, &res->seq_res, rqstp);
6421 if (status)
6422 goto out;
6423 status = decode_putfh(xdr);
6424 if (status)
6425 goto out;
6426 status = decode_readlink(xdr, rqstp);
6427 out:
6428 return status;
6429 }
6430
6431 /*
6432 * Decode READDIR response
6433 */
6434 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6435 struct nfs4_readdir_res *res)
6436 {
6437 struct compound_hdr hdr;
6438 int status;
6439
6440 status = decode_compound_hdr(xdr, &hdr);
6441 if (status)
6442 goto out;
6443 status = decode_sequence(xdr, &res->seq_res, rqstp);
6444 if (status)
6445 goto out;
6446 status = decode_putfh(xdr);
6447 if (status)
6448 goto out;
6449 status = decode_readdir(xdr, rqstp, res);
6450 out:
6451 return status;
6452 }
6453
6454 /*
6455 * Decode Read response
6456 */
6457 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6458 struct nfs_readres *res)
6459 {
6460 struct compound_hdr hdr;
6461 int status;
6462
6463 status = decode_compound_hdr(xdr, &hdr);
6464 if (status)
6465 goto out;
6466 status = decode_sequence(xdr, &res->seq_res, rqstp);
6467 if (status)
6468 goto out;
6469 status = decode_putfh(xdr);
6470 if (status)
6471 goto out;
6472 status = decode_read(xdr, rqstp, res);
6473 if (!status)
6474 status = res->count;
6475 out:
6476 return status;
6477 }
6478
6479 /*
6480 * Decode WRITE response
6481 */
6482 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6483 struct nfs_writeres *res)
6484 {
6485 struct compound_hdr hdr;
6486 int status;
6487
6488 status = decode_compound_hdr(xdr, &hdr);
6489 if (status)
6490 goto out;
6491 status = decode_sequence(xdr, &res->seq_res, rqstp);
6492 if (status)
6493 goto out;
6494 status = decode_putfh(xdr);
6495 if (status)
6496 goto out;
6497 status = decode_write(xdr, res);
6498 if (status)
6499 goto out;
6500 if (res->fattr)
6501 decode_getfattr(xdr, res->fattr, res->server);
6502 if (!status)
6503 status = res->count;
6504 out:
6505 return status;
6506 }
6507
6508 /*
6509 * Decode COMMIT response
6510 */
6511 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6512 struct nfs_commitres *res)
6513 {
6514 struct compound_hdr hdr;
6515 int status;
6516
6517 status = decode_compound_hdr(xdr, &hdr);
6518 if (status)
6519 goto out;
6520 status = decode_sequence(xdr, &res->seq_res, rqstp);
6521 if (status)
6522 goto out;
6523 status = decode_putfh(xdr);
6524 if (status)
6525 goto out;
6526 status = decode_commit(xdr, res);
6527 out:
6528 return status;
6529 }
6530
6531 /*
6532 * Decode FSINFO response
6533 */
6534 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6535 struct nfs4_fsinfo_res *res)
6536 {
6537 struct compound_hdr hdr;
6538 int status;
6539
6540 status = decode_compound_hdr(xdr, &hdr);
6541 if (!status)
6542 status = decode_sequence(xdr, &res->seq_res, req);
6543 if (!status)
6544 status = decode_putfh(xdr);
6545 if (!status)
6546 status = decode_fsinfo(xdr, res->fsinfo);
6547 return status;
6548 }
6549
6550 /*
6551 * Decode PATHCONF response
6552 */
6553 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6554 struct nfs4_pathconf_res *res)
6555 {
6556 struct compound_hdr hdr;
6557 int status;
6558
6559 status = decode_compound_hdr(xdr, &hdr);
6560 if (!status)
6561 status = decode_sequence(xdr, &res->seq_res, req);
6562 if (!status)
6563 status = decode_putfh(xdr);
6564 if (!status)
6565 status = decode_pathconf(xdr, res->pathconf);
6566 return status;
6567 }
6568
6569 /*
6570 * Decode STATFS response
6571 */
6572 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6573 struct nfs4_statfs_res *res)
6574 {
6575 struct compound_hdr hdr;
6576 int status;
6577
6578 status = decode_compound_hdr(xdr, &hdr);
6579 if (!status)
6580 status = decode_sequence(xdr, &res->seq_res, req);
6581 if (!status)
6582 status = decode_putfh(xdr);
6583 if (!status)
6584 status = decode_statfs(xdr, res->fsstat);
6585 return status;
6586 }
6587
6588 /*
6589 * Decode GETATTR_BITMAP response
6590 */
6591 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6592 struct xdr_stream *xdr,
6593 struct nfs4_server_caps_res *res)
6594 {
6595 struct compound_hdr hdr;
6596 int status;
6597
6598 status = decode_compound_hdr(xdr, &hdr);
6599 if (status)
6600 goto out;
6601 status = decode_sequence(xdr, &res->seq_res, req);
6602 if (status)
6603 goto out;
6604 status = decode_putfh(xdr);
6605 if (status)
6606 goto out;
6607 status = decode_server_caps(xdr, res);
6608 out:
6609 return status;
6610 }
6611
6612 /*
6613 * Decode RENEW response
6614 */
6615 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6616 void *__unused)
6617 {
6618 struct compound_hdr hdr;
6619 int status;
6620
6621 status = decode_compound_hdr(xdr, &hdr);
6622 if (!status)
6623 status = decode_renew(xdr);
6624 return status;
6625 }
6626
6627 /*
6628 * Decode SETCLIENTID response
6629 */
6630 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6631 struct xdr_stream *xdr,
6632 struct nfs4_setclientid_res *res)
6633 {
6634 struct compound_hdr hdr;
6635 int status;
6636
6637 status = decode_compound_hdr(xdr, &hdr);
6638 if (!status)
6639 status = decode_setclientid(xdr, res);
6640 return status;
6641 }
6642
6643 /*
6644 * Decode SETCLIENTID_CONFIRM response
6645 */
6646 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6647 struct xdr_stream *xdr,
6648 struct nfs_fsinfo *fsinfo)
6649 {
6650 struct compound_hdr hdr;
6651 int status;
6652
6653 status = decode_compound_hdr(xdr, &hdr);
6654 if (!status)
6655 status = decode_setclientid_confirm(xdr);
6656 if (!status)
6657 status = decode_putrootfh(xdr);
6658 if (!status)
6659 status = decode_fsinfo(xdr, fsinfo);
6660 return status;
6661 }
6662
6663 /*
6664 * Decode DELEGRETURN response
6665 */
6666 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6667 struct xdr_stream *xdr,
6668 struct nfs4_delegreturnres *res)
6669 {
6670 struct compound_hdr hdr;
6671 int status;
6672
6673 status = decode_compound_hdr(xdr, &hdr);
6674 if (status)
6675 goto out;
6676 status = decode_sequence(xdr, &res->seq_res, rqstp);
6677 if (status)
6678 goto out;
6679 status = decode_putfh(xdr);
6680 if (status != 0)
6681 goto out;
6682 status = decode_getfattr(xdr, res->fattr, res->server);
6683 if (status != 0)
6684 goto out;
6685 status = decode_delegreturn(xdr);
6686 out:
6687 return status;
6688 }
6689
6690 /*
6691 * Decode FS_LOCATIONS response
6692 */
6693 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6694 struct xdr_stream *xdr,
6695 struct nfs4_fs_locations_res *res)
6696 {
6697 struct compound_hdr hdr;
6698 int status;
6699
6700 status = decode_compound_hdr(xdr, &hdr);
6701 if (status)
6702 goto out;
6703 status = decode_sequence(xdr, &res->seq_res, req);
6704 if (status)
6705 goto out;
6706 status = decode_putfh(xdr);
6707 if (status)
6708 goto out;
6709 status = decode_lookup(xdr);
6710 if (status)
6711 goto out;
6712 xdr_enter_page(xdr, PAGE_SIZE);
6713 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6714 NULL, res->fs_locations,
6715 res->fs_locations->server);
6716 out:
6717 return status;
6718 }
6719
6720 /*
6721 * Decode SECINFO response
6722 */
6723 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6724 struct xdr_stream *xdr,
6725 struct nfs4_secinfo_res *res)
6726 {
6727 struct compound_hdr hdr;
6728 int status;
6729
6730 status = decode_compound_hdr(xdr, &hdr);
6731 if (status)
6732 goto out;
6733 status = decode_sequence(xdr, &res->seq_res, rqstp);
6734 if (status)
6735 goto out;
6736 status = decode_putfh(xdr);
6737 if (status)
6738 goto out;
6739 status = decode_secinfo(xdr, res);
6740 out:
6741 return status;
6742 }
6743
6744 #if defined(CONFIG_NFS_V4_1)
6745 /*
6746 * Decode BIND_CONN_TO_SESSION response
6747 */
6748 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6749 struct xdr_stream *xdr,
6750 void *res)
6751 {
6752 struct compound_hdr hdr;
6753 int status;
6754
6755 status = decode_compound_hdr(xdr, &hdr);
6756 if (!status)
6757 status = decode_bind_conn_to_session(xdr, res);
6758 return status;
6759 }
6760
6761 /*
6762 * Decode EXCHANGE_ID response
6763 */
6764 static int nfs4_xdr_dec_exchange_id(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_exchange_id(xdr, res);
6774 return status;
6775 }
6776
6777 /*
6778 * Decode CREATE_SESSION response
6779 */
6780 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6781 struct xdr_stream *xdr,
6782 struct nfs41_create_session_res *res)
6783 {
6784 struct compound_hdr hdr;
6785 int status;
6786
6787 status = decode_compound_hdr(xdr, &hdr);
6788 if (!status)
6789 status = decode_create_session(xdr, res);
6790 return status;
6791 }
6792
6793 /*
6794 * Decode DESTROY_SESSION response
6795 */
6796 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6797 struct xdr_stream *xdr,
6798 void *res)
6799 {
6800 struct compound_hdr hdr;
6801 int status;
6802
6803 status = decode_compound_hdr(xdr, &hdr);
6804 if (!status)
6805 status = decode_destroy_session(xdr, res);
6806 return status;
6807 }
6808
6809 /*
6810 * Decode DESTROY_CLIENTID response
6811 */
6812 static int nfs4_xdr_dec_destroy_clientid(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_clientid(xdr, res);
6822 return status;
6823 }
6824
6825 /*
6826 * Decode SEQUENCE response
6827 */
6828 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6829 struct xdr_stream *xdr,
6830 struct nfs4_sequence_res *res)
6831 {
6832 struct compound_hdr hdr;
6833 int status;
6834
6835 status = decode_compound_hdr(xdr, &hdr);
6836 if (!status)
6837 status = decode_sequence(xdr, res, rqstp);
6838 return status;
6839 }
6840
6841 /*
6842 * Decode GET_LEASE_TIME response
6843 */
6844 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6845 struct xdr_stream *xdr,
6846 struct nfs4_get_lease_time_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->lr_seq_res, rqstp);
6854 if (!status)
6855 status = decode_putrootfh(xdr);
6856 if (!status)
6857 status = decode_fsinfo(xdr, res->lr_fsinfo);
6858 return status;
6859 }
6860
6861 /*
6862 * Decode RECLAIM_COMPLETE response
6863 */
6864 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6865 struct xdr_stream *xdr,
6866 struct nfs41_reclaim_complete_res *res)
6867 {
6868 struct compound_hdr hdr;
6869 int status;
6870
6871 status = decode_compound_hdr(xdr, &hdr);
6872 if (!status)
6873 status = decode_sequence(xdr, &res->seq_res, rqstp);
6874 if (!status)
6875 status = decode_reclaim_complete(xdr, (void *)NULL);
6876 return status;
6877 }
6878
6879 /*
6880 * Decode GETDEVICELIST response
6881 */
6882 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6883 struct xdr_stream *xdr,
6884 struct nfs4_getdevicelist_res *res)
6885 {
6886 struct compound_hdr hdr;
6887 int status;
6888
6889 dprintk("encoding getdevicelist!\n");
6890
6891 status = decode_compound_hdr(xdr, &hdr);
6892 if (status != 0)
6893 goto out;
6894 status = decode_sequence(xdr, &res->seq_res, rqstp);
6895 if (status != 0)
6896 goto out;
6897 status = decode_putfh(xdr);
6898 if (status != 0)
6899 goto out;
6900 status = decode_getdevicelist(xdr, res->devlist);
6901 out:
6902 return status;
6903 }
6904
6905 /*
6906 * Decode GETDEVINFO response
6907 */
6908 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6909 struct xdr_stream *xdr,
6910 struct nfs4_getdeviceinfo_res *res)
6911 {
6912 struct compound_hdr hdr;
6913 int status;
6914
6915 status = decode_compound_hdr(xdr, &hdr);
6916 if (status != 0)
6917 goto out;
6918 status = decode_sequence(xdr, &res->seq_res, rqstp);
6919 if (status != 0)
6920 goto out;
6921 status = decode_getdeviceinfo(xdr, res->pdev);
6922 out:
6923 return status;
6924 }
6925
6926 /*
6927 * Decode LAYOUTGET response
6928 */
6929 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6930 struct xdr_stream *xdr,
6931 struct nfs4_layoutget_res *res)
6932 {
6933 struct compound_hdr hdr;
6934 int status;
6935
6936 status = decode_compound_hdr(xdr, &hdr);
6937 if (status)
6938 goto out;
6939 status = decode_sequence(xdr, &res->seq_res, rqstp);
6940 if (status)
6941 goto out;
6942 status = decode_putfh(xdr);
6943 if (status)
6944 goto out;
6945 status = decode_layoutget(xdr, rqstp, res);
6946 out:
6947 return status;
6948 }
6949
6950 /*
6951 * Decode LAYOUTRETURN response
6952 */
6953 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6954 struct xdr_stream *xdr,
6955 struct nfs4_layoutreturn_res *res)
6956 {
6957 struct compound_hdr hdr;
6958 int status;
6959
6960 status = decode_compound_hdr(xdr, &hdr);
6961 if (status)
6962 goto out;
6963 status = decode_sequence(xdr, &res->seq_res, rqstp);
6964 if (status)
6965 goto out;
6966 status = decode_putfh(xdr);
6967 if (status)
6968 goto out;
6969 status = decode_layoutreturn(xdr, res);
6970 out:
6971 return status;
6972 }
6973
6974 /*
6975 * Decode LAYOUTCOMMIT response
6976 */
6977 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6978 struct xdr_stream *xdr,
6979 struct nfs4_layoutcommit_res *res)
6980 {
6981 struct compound_hdr hdr;
6982 int status;
6983
6984 status = decode_compound_hdr(xdr, &hdr);
6985 if (status)
6986 goto out;
6987 status = decode_sequence(xdr, &res->seq_res, rqstp);
6988 if (status)
6989 goto out;
6990 status = decode_putfh(xdr);
6991 if (status)
6992 goto out;
6993 status = decode_layoutcommit(xdr, rqstp, res);
6994 if (status)
6995 goto out;
6996 decode_getfattr(xdr, res->fattr, res->server);
6997 out:
6998 return status;
6999 }
7000
7001 /*
7002 * Decode SECINFO_NO_NAME response
7003 */
7004 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7005 struct xdr_stream *xdr,
7006 struct nfs4_secinfo_res *res)
7007 {
7008 struct compound_hdr hdr;
7009 int status;
7010
7011 status = decode_compound_hdr(xdr, &hdr);
7012 if (status)
7013 goto out;
7014 status = decode_sequence(xdr, &res->seq_res, rqstp);
7015 if (status)
7016 goto out;
7017 status = decode_putrootfh(xdr);
7018 if (status)
7019 goto out;
7020 status = decode_secinfo_no_name(xdr, res);
7021 out:
7022 return status;
7023 }
7024
7025 /*
7026 * Decode TEST_STATEID response
7027 */
7028 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7029 struct xdr_stream *xdr,
7030 struct nfs41_test_stateid_res *res)
7031 {
7032 struct compound_hdr hdr;
7033 int status;
7034
7035 status = decode_compound_hdr(xdr, &hdr);
7036 if (status)
7037 goto out;
7038 status = decode_sequence(xdr, &res->seq_res, rqstp);
7039 if (status)
7040 goto out;
7041 status = decode_test_stateid(xdr, res);
7042 out:
7043 return status;
7044 }
7045
7046 /*
7047 * Decode FREE_STATEID response
7048 */
7049 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7050 struct xdr_stream *xdr,
7051 struct nfs41_free_stateid_res *res)
7052 {
7053 struct compound_hdr hdr;
7054 int status;
7055
7056 status = decode_compound_hdr(xdr, &hdr);
7057 if (status)
7058 goto out;
7059 status = decode_sequence(xdr, &res->seq_res, rqstp);
7060 if (status)
7061 goto out;
7062 status = decode_free_stateid(xdr, res);
7063 out:
7064 return status;
7065 }
7066 #endif /* CONFIG_NFS_V4_1 */
7067
7068 /**
7069 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7070 * the local page cache.
7071 * @xdr: XDR stream where entry resides
7072 * @entry: buffer to fill in with entry data
7073 * @plus: boolean indicating whether this should be a readdirplus entry
7074 *
7075 * Returns zero if successful, otherwise a negative errno value is
7076 * returned.
7077 *
7078 * This function is not invoked during READDIR reply decoding, but
7079 * rather whenever an application invokes the getdents(2) system call
7080 * on a directory already in our cache.
7081 */
7082 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7083 int plus)
7084 {
7085 unsigned int savep;
7086 uint32_t bitmap[3] = {0};
7087 uint32_t len;
7088 __be32 *p = xdr_inline_decode(xdr, 4);
7089 if (unlikely(!p))
7090 goto out_overflow;
7091 if (*p == xdr_zero) {
7092 p = xdr_inline_decode(xdr, 4);
7093 if (unlikely(!p))
7094 goto out_overflow;
7095 if (*p == xdr_zero)
7096 return -EAGAIN;
7097 entry->eof = 1;
7098 return -EBADCOOKIE;
7099 }
7100
7101 p = xdr_inline_decode(xdr, 12);
7102 if (unlikely(!p))
7103 goto out_overflow;
7104 entry->prev_cookie = entry->cookie;
7105 p = xdr_decode_hyper(p, &entry->cookie);
7106 entry->len = be32_to_cpup(p);
7107
7108 p = xdr_inline_decode(xdr, entry->len);
7109 if (unlikely(!p))
7110 goto out_overflow;
7111 entry->name = (const char *) p;
7112
7113 /*
7114 * In case the server doesn't return an inode number,
7115 * we fake one here. (We don't use inode number 0,
7116 * since glibc seems to choke on it...)
7117 */
7118 entry->ino = 1;
7119 entry->fattr->valid = 0;
7120
7121 if (decode_attr_bitmap(xdr, bitmap) < 0)
7122 goto out_overflow;
7123
7124 if (decode_attr_length(xdr, &len, &savep) < 0)
7125 goto out_overflow;
7126
7127 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7128 NULL, entry->server) < 0)
7129 goto out_overflow;
7130 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7131 entry->ino = entry->fattr->mounted_on_fileid;
7132 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7133 entry->ino = entry->fattr->fileid;
7134
7135 entry->d_type = DT_UNKNOWN;
7136 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7137 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7138
7139 return 0;
7140
7141 out_overflow:
7142 print_overflow_msg(__func__, xdr);
7143 return -EAGAIN;
7144 }
7145
7146 /*
7147 * We need to translate between nfs status return values and
7148 * the local errno values which may not be the same.
7149 */
7150 static struct {
7151 int stat;
7152 int errno;
7153 } nfs_errtbl[] = {
7154 { NFS4_OK, 0 },
7155 { NFS4ERR_PERM, -EPERM },
7156 { NFS4ERR_NOENT, -ENOENT },
7157 { NFS4ERR_IO, -errno_NFSERR_IO},
7158 { NFS4ERR_NXIO, -ENXIO },
7159 { NFS4ERR_ACCESS, -EACCES },
7160 { NFS4ERR_EXIST, -EEXIST },
7161 { NFS4ERR_XDEV, -EXDEV },
7162 { NFS4ERR_NOTDIR, -ENOTDIR },
7163 { NFS4ERR_ISDIR, -EISDIR },
7164 { NFS4ERR_INVAL, -EINVAL },
7165 { NFS4ERR_FBIG, -EFBIG },
7166 { NFS4ERR_NOSPC, -ENOSPC },
7167 { NFS4ERR_ROFS, -EROFS },
7168 { NFS4ERR_MLINK, -EMLINK },
7169 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7170 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7171 { NFS4ERR_DQUOT, -EDQUOT },
7172 { NFS4ERR_STALE, -ESTALE },
7173 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7174 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7175 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7176 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7177 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7178 { NFS4ERR_BADTYPE, -EBADTYPE },
7179 { NFS4ERR_LOCKED, -EAGAIN },
7180 { NFS4ERR_SYMLINK, -ELOOP },
7181 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7182 { NFS4ERR_DEADLOCK, -EDEADLK },
7183 { -1, -EIO }
7184 };
7185
7186 /*
7187 * Convert an NFS error code to a local one.
7188 * This one is used jointly by NFSv2 and NFSv3.
7189 */
7190 static int
7191 nfs4_stat_to_errno(int stat)
7192 {
7193 int i;
7194 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7195 if (nfs_errtbl[i].stat == stat)
7196 return nfs_errtbl[i].errno;
7197 }
7198 if (stat <= 10000 || stat > 10100) {
7199 /* The server is looney tunes. */
7200 return -EREMOTEIO;
7201 }
7202 /* If we cannot translate the error, the recovery routines should
7203 * handle it.
7204 * Note: remaining NFSv4 error codes have values > 10000, so should
7205 * not conflict with native Linux error codes.
7206 */
7207 return -stat;
7208 }
7209
7210 #define PROC(proc, argtype, restype) \
7211 [NFSPROC4_CLNT_##proc] = { \
7212 .p_proc = NFSPROC4_COMPOUND, \
7213 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7214 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7215 .p_arglen = NFS4_##argtype##_sz, \
7216 .p_replen = NFS4_##restype##_sz, \
7217 .p_statidx = NFSPROC4_CLNT_##proc, \
7218 .p_name = #proc, \
7219 }
7220
7221 struct rpc_procinfo nfs4_procedures[] = {
7222 PROC(READ, enc_read, dec_read),
7223 PROC(WRITE, enc_write, dec_write),
7224 PROC(COMMIT, enc_commit, dec_commit),
7225 PROC(OPEN, enc_open, dec_open),
7226 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7227 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7228 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7229 PROC(CLOSE, enc_close, dec_close),
7230 PROC(SETATTR, enc_setattr, dec_setattr),
7231 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7232 PROC(RENEW, enc_renew, dec_renew),
7233 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7234 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7235 PROC(LOCK, enc_lock, dec_lock),
7236 PROC(LOCKT, enc_lockt, dec_lockt),
7237 PROC(LOCKU, enc_locku, dec_locku),
7238 PROC(ACCESS, enc_access, dec_access),
7239 PROC(GETATTR, enc_getattr, dec_getattr),
7240 PROC(LOOKUP, enc_lookup, dec_lookup),
7241 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7242 PROC(REMOVE, enc_remove, dec_remove),
7243 PROC(RENAME, enc_rename, dec_rename),
7244 PROC(LINK, enc_link, dec_link),
7245 PROC(SYMLINK, enc_symlink, dec_symlink),
7246 PROC(CREATE, enc_create, dec_create),
7247 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7248 PROC(STATFS, enc_statfs, dec_statfs),
7249 PROC(READLINK, enc_readlink, dec_readlink),
7250 PROC(READDIR, enc_readdir, dec_readdir),
7251 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7252 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7253 PROC(GETACL, enc_getacl, dec_getacl),
7254 PROC(SETACL, enc_setacl, dec_setacl),
7255 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7256 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7257 PROC(SECINFO, enc_secinfo, dec_secinfo),
7258 #if defined(CONFIG_NFS_V4_1)
7259 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7260 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7261 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7262 PROC(SEQUENCE, enc_sequence, dec_sequence),
7263 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7264 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7265 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7266 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7267 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7268 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7269 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7270 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7271 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7272 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7273 PROC(BIND_CONN_TO_SESSION,
7274 enc_bind_conn_to_session, dec_bind_conn_to_session),
7275 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7276 #endif /* CONFIG_NFS_V4_1 */
7277 };
7278
7279 const struct rpc_version nfs_version4 = {
7280 .number = 4,
7281 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7282 .procs = nfs4_procedures
7283 };
7284
7285 /*
7286 * Local variables:
7287 * c-basic-offset: 8
7288 * End:
7289 */
Linux kernel - Deliverables
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