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NFSv4: Fix Oopses in the fs_locations code
[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 "nfs4session.h"
60 #include "pnfs.h"
61 #include "netns.h"
62
63 #define NFSDBG_FACILITY NFSDBG_XDR
64
65 /* Mapping from NFS error code to "errno" error code. */
66 #define errno_NFSERR_IO EIO
67
68 static int nfs4_stat_to_errno(int);
69
70 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
71 #ifdef DEBUG
72 #define NFS4_MAXTAGLEN 20
73 #else
74 #define NFS4_MAXTAGLEN 0
75 #endif
76
77 /* lock,open owner id:
78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
79 */
80 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
81 #define lock_owner_id_maxsz (1 + 1 + 4)
82 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
83 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85 #define op_encode_hdr_maxsz (1)
86 #define op_decode_hdr_maxsz (2)
87 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
92 (NFS4_FHSIZE >> 2))
93 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
94 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
97 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
99 #define nfs4_fattr_bitmap_maxsz 4
100 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
101 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
103 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105 /* We support only one layout type per file system */
106 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
107 /* This is based on getfattr, which uses the most attributes: */
108 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
109 3 + 3 + 3 + nfs4_owner_maxsz + \
110 nfs4_group_maxsz + decode_mdsthreshold_maxsz))
111 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
112 nfs4_fattr_value_maxsz)
113 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
114 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
115 1 + 2 + 1 + \
116 nfs4_owner_maxsz + \
117 nfs4_group_maxsz + \
118 4 + 4)
119 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
120 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
121 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
122 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
123 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
124 /* The 5 accounts for the PNFS attributes, and assumes that at most three
125 * layout types will be returned.
126 */
127 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
128 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
129 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
130 #define decode_renew_maxsz (op_decode_hdr_maxsz)
131 #define encode_setclientid_maxsz \
132 (op_encode_hdr_maxsz + \
133 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
134 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
135 1 /* sc_prog */ + \
136 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
137 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
138 1) /* sc_cb_ident */
139 #define decode_setclientid_maxsz \
140 (op_decode_hdr_maxsz + \
141 2 + \
142 1024) /* large value for CLID_INUSE */
143 #define encode_setclientid_confirm_maxsz \
144 (op_encode_hdr_maxsz + \
145 3 + (NFS4_VERIFIER_SIZE >> 2))
146 #define decode_setclientid_confirm_maxsz \
147 (op_decode_hdr_maxsz)
148 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
149 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
150 #define encode_share_access_maxsz \
151 (2)
152 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
153 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
154 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
155 #define encode_open_maxsz (op_encode_hdr_maxsz + \
156 2 + encode_share_access_maxsz + 2 + \
157 open_owner_id_maxsz + \
158 encode_opentype_maxsz + \
159 encode_claim_null_maxsz)
160 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
161 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
162 decode_ace_maxsz)
163 #define decode_change_info_maxsz (5)
164 #define decode_open_maxsz (op_decode_hdr_maxsz + \
165 decode_stateid_maxsz + \
166 decode_change_info_maxsz + 1 + \
167 nfs4_fattr_bitmap_maxsz + \
168 decode_delegation_maxsz)
169 #define encode_open_confirm_maxsz \
170 (op_encode_hdr_maxsz + \
171 encode_stateid_maxsz + 1)
172 #define decode_open_confirm_maxsz \
173 (op_decode_hdr_maxsz + \
174 decode_stateid_maxsz)
175 #define encode_open_downgrade_maxsz \
176 (op_encode_hdr_maxsz + \
177 encode_stateid_maxsz + 1 + \
178 encode_share_access_maxsz)
179 #define decode_open_downgrade_maxsz \
180 (op_decode_hdr_maxsz + \
181 decode_stateid_maxsz)
182 #define encode_close_maxsz (op_encode_hdr_maxsz + \
183 1 + encode_stateid_maxsz)
184 #define decode_close_maxsz (op_decode_hdr_maxsz + \
185 decode_stateid_maxsz)
186 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
187 encode_stateid_maxsz + \
188 encode_attrs_maxsz)
189 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
190 nfs4_fattr_bitmap_maxsz)
191 #define encode_read_maxsz (op_encode_hdr_maxsz + \
192 encode_stateid_maxsz + 3)
193 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
194 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
195 2 + encode_verifier_maxsz + 5)
196 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
197 decode_verifier_maxsz)
198 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
199 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
200 #define encode_write_maxsz (op_encode_hdr_maxsz + \
201 encode_stateid_maxsz + 4)
202 #define decode_write_maxsz (op_decode_hdr_maxsz + \
203 2 + decode_verifier_maxsz)
204 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
205 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
206 decode_verifier_maxsz)
207 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
208 nfs4_name_maxsz)
209 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
210 decode_change_info_maxsz)
211 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
212 2 * nfs4_name_maxsz)
213 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
214 decode_change_info_maxsz + \
215 decode_change_info_maxsz)
216 #define encode_link_maxsz (op_encode_hdr_maxsz + \
217 nfs4_name_maxsz)
218 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
219 #define encode_lockowner_maxsz (7)
220 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
221 7 + \
222 1 + encode_stateid_maxsz + 1 + \
223 encode_lockowner_maxsz)
224 #define decode_lock_denied_maxsz \
225 (8 + decode_lockowner_maxsz)
226 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
227 decode_lock_denied_maxsz)
228 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
229 encode_lockowner_maxsz)
230 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
231 decode_lock_denied_maxsz)
232 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
233 encode_stateid_maxsz + \
234 4)
235 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
236 decode_stateid_maxsz)
237 #define encode_release_lockowner_maxsz \
238 (op_encode_hdr_maxsz + \
239 encode_lockowner_maxsz)
240 #define decode_release_lockowner_maxsz \
241 (op_decode_hdr_maxsz)
242 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
243 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
244 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
245 1 + nfs4_name_maxsz + \
246 1 + \
247 nfs4_fattr_maxsz)
248 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
249 #define encode_create_maxsz (op_encode_hdr_maxsz + \
250 1 + 2 + nfs4_name_maxsz + \
251 encode_attrs_maxsz)
252 #define decode_create_maxsz (op_decode_hdr_maxsz + \
253 decode_change_info_maxsz + \
254 nfs4_fattr_bitmap_maxsz)
255 #define encode_statfs_maxsz (encode_getattr_maxsz)
256 #define decode_statfs_maxsz (decode_getattr_maxsz)
257 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
258 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
259 #define encode_getacl_maxsz (encode_getattr_maxsz)
260 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
261 nfs4_fattr_bitmap_maxsz + 1)
262 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
263 encode_stateid_maxsz + 3)
264 #define decode_setacl_maxsz (decode_setattr_maxsz)
265 #define encode_fs_locations_maxsz \
266 (encode_getattr_maxsz)
267 #define decode_fs_locations_maxsz \
268 (0)
269 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
270 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
271
272 #if defined(CONFIG_NFS_V4_1)
273 #define NFS4_MAX_MACHINE_NAME_LEN (64)
274 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
275 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
276
277 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
278 encode_verifier_maxsz + \
279 1 /* co_ownerid.len */ + \
280 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
281 1 /* flags */ + \
282 1 /* spa_how */ + \
283 0 /* SP4_NONE (for now) */ + \
284 1 /* implementation id array of size 1 */ + \
285 1 /* nii_domain */ + \
286 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
287 1 /* nii_name */ + \
288 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
289 3 /* nii_date */)
290 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
291 2 /* eir_clientid */ + \
292 1 /* eir_sequenceid */ + \
293 1 /* eir_flags */ + \
294 1 /* spr_how */ + \
295 0 /* SP4_NONE (for now) */ + \
296 2 /* eir_server_owner.so_minor_id */ + \
297 /* eir_server_owner.so_major_id<> */ \
298 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
299 /* eir_server_scope<> */ \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
301 1 /* eir_server_impl_id array length */ + \
302 1 /* nii_domain */ + \
303 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
304 1 /* nii_name */ + \
305 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
306 3 /* nii_date */)
307 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
308 #define decode_channel_attrs_maxsz (6 + \
309 1 /* ca_rdma_ird.len */ + \
310 1 /* ca_rdma_ird */)
311 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
312 2 /* csa_clientid */ + \
313 1 /* csa_sequence */ + \
314 1 /* csa_flags */ + \
315 encode_channel_attrs_maxsz + \
316 encode_channel_attrs_maxsz + \
317 1 /* csa_cb_program */ + \
318 1 /* csa_sec_parms.len (1) */ + \
319 1 /* cb_secflavor (AUTH_SYS) */ + \
320 1 /* stamp */ + \
321 1 /* machinename.len */ + \
322 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
323 1 /* uid */ + \
324 1 /* gid */ + \
325 1 /* gids.len (0) */)
326 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
327 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
328 1 /* csr_sequence */ + \
329 1 /* csr_flags */ + \
330 decode_channel_attrs_maxsz + \
331 decode_channel_attrs_maxsz)
332 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
333 /* bctsa_sessid */ \
334 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
335 1 /* bctsa_dir */ + \
336 1 /* bctsa_use_conn_in_rdma_mode */)
337 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
338 /* bctsr_sessid */ \
339 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
340 1 /* bctsr_dir */ + \
341 1 /* bctsr_use_conn_in_rdma_mode */)
342 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
343 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
344 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
345 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
346 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
347 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
348 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
349 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
350 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
351 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
352 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
353 encode_verifier_maxsz)
354 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
355 2 /* nfs_cookie4 gdlr_cookie */ + \
356 decode_verifier_maxsz \
357 /* verifier4 gdlr_verifier */ + \
358 1 /* gdlr_deviceid_list count */ + \
359 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
360 NFS4_DEVICEID4_SIZE) \
361 /* gdlr_deviceid_list */ + \
362 1 /* bool gdlr_eof */)
363 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
364 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
365 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
366 1 /* layout type */ + \
367 1 /* opaque devaddr4 length */ + \
368 /* devaddr4 payload is read into page */ \
369 1 /* notification bitmap length */ + \
370 1 /* notification bitmap */)
371 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
372 encode_stateid_maxsz)
373 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
374 decode_stateid_maxsz + \
375 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
376 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
377 2 /* offset */ + \
378 2 /* length */ + \
379 1 /* reclaim */ + \
380 encode_stateid_maxsz + \
381 1 /* new offset (true) */ + \
382 2 /* last byte written */ + \
383 1 /* nt_timechanged (false) */ + \
384 1 /* layoutupdate4 layout type */ + \
385 1 /* NULL filelayout layoutupdate4 payload */)
386 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
387 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
388 encode_stateid_maxsz + \
389 1 /* FIXME: opaque lrf_body always empty at the moment */)
390 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
391 1 + decode_stateid_maxsz)
392 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
393 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
394 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
395 XDR_QUADLEN(NFS4_STATEID_SIZE))
396 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
397 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
398 XDR_QUADLEN(NFS4_STATEID_SIZE))
399 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
400 #else /* CONFIG_NFS_V4_1 */
401 #define encode_sequence_maxsz 0
402 #define decode_sequence_maxsz 0
403 #endif /* CONFIG_NFS_V4_1 */
404
405 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
406 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
407 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
408 encode_sequence_maxsz + \
409 encode_putfh_maxsz + \
410 encode_read_maxsz)
411 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
412 decode_sequence_maxsz + \
413 decode_putfh_maxsz + \
414 decode_read_maxsz)
415 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
416 encode_sequence_maxsz + \
417 encode_putfh_maxsz + \
418 encode_readlink_maxsz)
419 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
420 decode_sequence_maxsz + \
421 decode_putfh_maxsz + \
422 decode_readlink_maxsz)
423 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
424 encode_sequence_maxsz + \
425 encode_putfh_maxsz + \
426 encode_readdir_maxsz)
427 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
428 decode_sequence_maxsz + \
429 decode_putfh_maxsz + \
430 decode_readdir_maxsz)
431 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
432 encode_sequence_maxsz + \
433 encode_putfh_maxsz + \
434 encode_write_maxsz + \
435 encode_getattr_maxsz)
436 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
437 decode_sequence_maxsz + \
438 decode_putfh_maxsz + \
439 decode_write_maxsz + \
440 decode_getattr_maxsz)
441 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
442 encode_sequence_maxsz + \
443 encode_putfh_maxsz + \
444 encode_commit_maxsz)
445 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
446 decode_sequence_maxsz + \
447 decode_putfh_maxsz + \
448 decode_commit_maxsz)
449 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
450 encode_sequence_maxsz + \
451 encode_putfh_maxsz + \
452 encode_open_maxsz + \
453 encode_access_maxsz + \
454 encode_getfh_maxsz + \
455 encode_getattr_maxsz)
456 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
457 decode_sequence_maxsz + \
458 decode_putfh_maxsz + \
459 decode_open_maxsz + \
460 decode_access_maxsz + \
461 decode_getfh_maxsz + \
462 decode_getattr_maxsz)
463 #define NFS4_enc_open_confirm_sz \
464 (compound_encode_hdr_maxsz + \
465 encode_putfh_maxsz + \
466 encode_open_confirm_maxsz)
467 #define NFS4_dec_open_confirm_sz \
468 (compound_decode_hdr_maxsz + \
469 decode_putfh_maxsz + \
470 decode_open_confirm_maxsz)
471 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
472 encode_sequence_maxsz + \
473 encode_putfh_maxsz + \
474 encode_open_maxsz + \
475 encode_access_maxsz + \
476 encode_getattr_maxsz)
477 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
478 decode_sequence_maxsz + \
479 decode_putfh_maxsz + \
480 decode_open_maxsz + \
481 decode_access_maxsz + \
482 decode_getattr_maxsz)
483 #define NFS4_enc_open_downgrade_sz \
484 (compound_encode_hdr_maxsz + \
485 encode_sequence_maxsz + \
486 encode_putfh_maxsz + \
487 encode_open_downgrade_maxsz + \
488 encode_getattr_maxsz)
489 #define NFS4_dec_open_downgrade_sz \
490 (compound_decode_hdr_maxsz + \
491 decode_sequence_maxsz + \
492 decode_putfh_maxsz + \
493 decode_open_downgrade_maxsz + \
494 decode_getattr_maxsz)
495 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
496 encode_sequence_maxsz + \
497 encode_putfh_maxsz + \
498 encode_close_maxsz + \
499 encode_getattr_maxsz)
500 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
501 decode_sequence_maxsz + \
502 decode_putfh_maxsz + \
503 decode_close_maxsz + \
504 decode_getattr_maxsz)
505 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
506 encode_sequence_maxsz + \
507 encode_putfh_maxsz + \
508 encode_setattr_maxsz + \
509 encode_getattr_maxsz)
510 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
511 decode_sequence_maxsz + \
512 decode_putfh_maxsz + \
513 decode_setattr_maxsz + \
514 decode_getattr_maxsz)
515 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
516 encode_sequence_maxsz + \
517 encode_putfh_maxsz + \
518 encode_fsinfo_maxsz)
519 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
520 decode_sequence_maxsz + \
521 decode_putfh_maxsz + \
522 decode_fsinfo_maxsz)
523 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
524 encode_renew_maxsz)
525 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
526 decode_renew_maxsz)
527 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
528 encode_setclientid_maxsz)
529 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
530 decode_setclientid_maxsz)
531 #define NFS4_enc_setclientid_confirm_sz \
532 (compound_encode_hdr_maxsz + \
533 encode_setclientid_confirm_maxsz + \
534 encode_putrootfh_maxsz + \
535 encode_fsinfo_maxsz)
536 #define NFS4_dec_setclientid_confirm_sz \
537 (compound_decode_hdr_maxsz + \
538 decode_setclientid_confirm_maxsz + \
539 decode_putrootfh_maxsz + \
540 decode_fsinfo_maxsz)
541 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
542 encode_sequence_maxsz + \
543 encode_putfh_maxsz + \
544 encode_lock_maxsz)
545 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
546 decode_sequence_maxsz + \
547 decode_putfh_maxsz + \
548 decode_lock_maxsz)
549 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
550 encode_sequence_maxsz + \
551 encode_putfh_maxsz + \
552 encode_lockt_maxsz)
553 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
554 decode_sequence_maxsz + \
555 decode_putfh_maxsz + \
556 decode_lockt_maxsz)
557 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
558 encode_sequence_maxsz + \
559 encode_putfh_maxsz + \
560 encode_locku_maxsz)
561 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
562 decode_sequence_maxsz + \
563 decode_putfh_maxsz + \
564 decode_locku_maxsz)
565 #define NFS4_enc_release_lockowner_sz \
566 (compound_encode_hdr_maxsz + \
567 encode_lockowner_maxsz)
568 #define NFS4_dec_release_lockowner_sz \
569 (compound_decode_hdr_maxsz + \
570 decode_lockowner_maxsz)
571 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
572 encode_sequence_maxsz + \
573 encode_putfh_maxsz + \
574 encode_access_maxsz + \
575 encode_getattr_maxsz)
576 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
577 decode_sequence_maxsz + \
578 decode_putfh_maxsz + \
579 decode_access_maxsz + \
580 decode_getattr_maxsz)
581 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
582 encode_sequence_maxsz + \
583 encode_putfh_maxsz + \
584 encode_getattr_maxsz)
585 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
586 decode_sequence_maxsz + \
587 decode_putfh_maxsz + \
588 decode_getattr_maxsz)
589 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_lookup_maxsz + \
593 encode_getattr_maxsz + \
594 encode_getfh_maxsz)
595 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_lookup_maxsz + \
599 decode_getattr_maxsz + \
600 decode_getfh_maxsz)
601 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
602 encode_sequence_maxsz + \
603 encode_putrootfh_maxsz + \
604 encode_getattr_maxsz + \
605 encode_getfh_maxsz)
606 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
607 decode_sequence_maxsz + \
608 decode_putrootfh_maxsz + \
609 decode_getattr_maxsz + \
610 decode_getfh_maxsz)
611 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
612 encode_sequence_maxsz + \
613 encode_putfh_maxsz + \
614 encode_remove_maxsz)
615 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
616 decode_sequence_maxsz + \
617 decode_putfh_maxsz + \
618 decode_remove_maxsz)
619 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putfh_maxsz + \
622 encode_savefh_maxsz + \
623 encode_putfh_maxsz + \
624 encode_rename_maxsz)
625 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
626 decode_sequence_maxsz + \
627 decode_putfh_maxsz + \
628 decode_savefh_maxsz + \
629 decode_putfh_maxsz + \
630 decode_rename_maxsz)
631 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
632 encode_sequence_maxsz + \
633 encode_putfh_maxsz + \
634 encode_savefh_maxsz + \
635 encode_putfh_maxsz + \
636 encode_link_maxsz + \
637 encode_restorefh_maxsz + \
638 encode_getattr_maxsz)
639 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
640 decode_sequence_maxsz + \
641 decode_putfh_maxsz + \
642 decode_savefh_maxsz + \
643 decode_putfh_maxsz + \
644 decode_link_maxsz + \
645 decode_restorefh_maxsz + \
646 decode_getattr_maxsz)
647 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
648 encode_sequence_maxsz + \
649 encode_putfh_maxsz + \
650 encode_symlink_maxsz + \
651 encode_getattr_maxsz + \
652 encode_getfh_maxsz)
653 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
654 decode_sequence_maxsz + \
655 decode_putfh_maxsz + \
656 decode_symlink_maxsz + \
657 decode_getattr_maxsz + \
658 decode_getfh_maxsz)
659 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
660 encode_sequence_maxsz + \
661 encode_putfh_maxsz + \
662 encode_create_maxsz + \
663 encode_getfh_maxsz + \
664 encode_getattr_maxsz)
665 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
666 decode_sequence_maxsz + \
667 decode_putfh_maxsz + \
668 decode_create_maxsz + \
669 decode_getfh_maxsz + \
670 decode_getattr_maxsz)
671 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
672 encode_sequence_maxsz + \
673 encode_putfh_maxsz + \
674 encode_getattr_maxsz)
675 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
676 decode_sequence_maxsz + \
677 decode_putfh_maxsz + \
678 decode_getattr_maxsz)
679 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
680 encode_sequence_maxsz + \
681 encode_putfh_maxsz + \
682 encode_statfs_maxsz)
683 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
684 decode_sequence_maxsz + \
685 decode_putfh_maxsz + \
686 decode_statfs_maxsz)
687 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
688 encode_sequence_maxsz + \
689 encode_putfh_maxsz + \
690 encode_getattr_maxsz)
691 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
692 decode_sequence_maxsz + \
693 decode_putfh_maxsz + \
694 decode_getattr_maxsz)
695 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
696 encode_sequence_maxsz + \
697 encode_putfh_maxsz + \
698 encode_delegreturn_maxsz + \
699 encode_getattr_maxsz)
700 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
701 decode_sequence_maxsz + \
702 decode_delegreturn_maxsz + \
703 decode_getattr_maxsz)
704 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
705 encode_sequence_maxsz + \
706 encode_putfh_maxsz + \
707 encode_getacl_maxsz)
708 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
709 decode_sequence_maxsz + \
710 decode_putfh_maxsz + \
711 decode_getacl_maxsz)
712 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
713 encode_sequence_maxsz + \
714 encode_putfh_maxsz + \
715 encode_setacl_maxsz)
716 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
717 decode_sequence_maxsz + \
718 decode_putfh_maxsz + \
719 decode_setacl_maxsz)
720 #define NFS4_enc_fs_locations_sz \
721 (compound_encode_hdr_maxsz + \
722 encode_sequence_maxsz + \
723 encode_putfh_maxsz + \
724 encode_lookup_maxsz + \
725 encode_fs_locations_maxsz)
726 #define NFS4_dec_fs_locations_sz \
727 (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz + \
729 decode_putfh_maxsz + \
730 decode_lookup_maxsz + \
731 decode_fs_locations_maxsz)
732 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
733 encode_sequence_maxsz + \
734 encode_putfh_maxsz + \
735 encode_secinfo_maxsz)
736 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
737 decode_sequence_maxsz + \
738 decode_putfh_maxsz + \
739 decode_secinfo_maxsz)
740 #if defined(CONFIG_NFS_V4_1)
741 #define NFS4_enc_bind_conn_to_session_sz \
742 (compound_encode_hdr_maxsz + \
743 encode_bind_conn_to_session_maxsz)
744 #define NFS4_dec_bind_conn_to_session_sz \
745 (compound_decode_hdr_maxsz + \
746 decode_bind_conn_to_session_maxsz)
747 #define NFS4_enc_exchange_id_sz \
748 (compound_encode_hdr_maxsz + \
749 encode_exchange_id_maxsz)
750 #define NFS4_dec_exchange_id_sz \
751 (compound_decode_hdr_maxsz + \
752 decode_exchange_id_maxsz)
753 #define NFS4_enc_create_session_sz \
754 (compound_encode_hdr_maxsz + \
755 encode_create_session_maxsz)
756 #define NFS4_dec_create_session_sz \
757 (compound_decode_hdr_maxsz + \
758 decode_create_session_maxsz)
759 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
760 encode_destroy_session_maxsz)
761 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
762 decode_destroy_session_maxsz)
763 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
764 encode_destroy_clientid_maxsz)
765 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
766 decode_destroy_clientid_maxsz)
767 #define NFS4_enc_sequence_sz \
768 (compound_decode_hdr_maxsz + \
769 encode_sequence_maxsz)
770 #define NFS4_dec_sequence_sz \
771 (compound_decode_hdr_maxsz + \
772 decode_sequence_maxsz)
773 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
774 encode_sequence_maxsz + \
775 encode_putrootfh_maxsz + \
776 encode_fsinfo_maxsz)
777 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_putrootfh_maxsz + \
780 decode_fsinfo_maxsz)
781 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
782 encode_sequence_maxsz + \
783 encode_reclaim_complete_maxsz)
784 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
785 decode_sequence_maxsz + \
786 decode_reclaim_complete_maxsz)
787 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
788 encode_sequence_maxsz + \
789 encode_putfh_maxsz + \
790 encode_getdevicelist_maxsz)
791 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
792 decode_sequence_maxsz + \
793 decode_putfh_maxsz + \
794 decode_getdevicelist_maxsz)
795 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
796 encode_sequence_maxsz +\
797 encode_getdeviceinfo_maxsz)
798 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
799 decode_sequence_maxsz + \
800 decode_getdeviceinfo_maxsz)
801 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
802 encode_sequence_maxsz + \
803 encode_putfh_maxsz + \
804 encode_layoutget_maxsz)
805 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
806 decode_sequence_maxsz + \
807 decode_putfh_maxsz + \
808 decode_layoutget_maxsz)
809 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
810 encode_sequence_maxsz +\
811 encode_putfh_maxsz + \
812 encode_layoutcommit_maxsz + \
813 encode_getattr_maxsz)
814 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
815 decode_sequence_maxsz + \
816 decode_putfh_maxsz + \
817 decode_layoutcommit_maxsz + \
818 decode_getattr_maxsz)
819 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
820 encode_sequence_maxsz + \
821 encode_putfh_maxsz + \
822 encode_layoutreturn_maxsz)
823 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
824 decode_sequence_maxsz + \
825 decode_putfh_maxsz + \
826 decode_layoutreturn_maxsz)
827 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
828 encode_sequence_maxsz + \
829 encode_putrootfh_maxsz +\
830 encode_secinfo_no_name_maxsz)
831 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
832 decode_sequence_maxsz + \
833 decode_putrootfh_maxsz + \
834 decode_secinfo_no_name_maxsz)
835 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
836 encode_sequence_maxsz + \
837 encode_test_stateid_maxsz)
838 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
839 decode_sequence_maxsz + \
840 decode_test_stateid_maxsz)
841 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
842 encode_sequence_maxsz + \
843 encode_free_stateid_maxsz)
844 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
845 decode_sequence_maxsz + \
846 decode_free_stateid_maxsz)
847
848 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
849 compound_encode_hdr_maxsz +
850 encode_sequence_maxsz +
851 encode_putfh_maxsz +
852 encode_getattr_maxsz) *
853 XDR_UNIT);
854
855 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
856 compound_decode_hdr_maxsz +
857 decode_sequence_maxsz +
858 decode_putfh_maxsz) *
859 XDR_UNIT);
860 #endif /* CONFIG_NFS_V4_1 */
861
862 static const umode_t nfs_type2fmt[] = {
863 [NF4BAD] = 0,
864 [NF4REG] = S_IFREG,
865 [NF4DIR] = S_IFDIR,
866 [NF4BLK] = S_IFBLK,
867 [NF4CHR] = S_IFCHR,
868 [NF4LNK] = S_IFLNK,
869 [NF4SOCK] = S_IFSOCK,
870 [NF4FIFO] = S_IFIFO,
871 [NF4ATTRDIR] = 0,
872 [NF4NAMEDATTR] = 0,
873 };
874
875 struct compound_hdr {
876 int32_t status;
877 uint32_t nops;
878 __be32 * nops_p;
879 uint32_t taglen;
880 char * tag;
881 uint32_t replen; /* expected reply words */
882 u32 minorversion;
883 };
884
885 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
886 {
887 __be32 *p = xdr_reserve_space(xdr, nbytes);
888 BUG_ON(!p);
889 return p;
890 }
891
892 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
893 {
894 __be32 *p;
895
896 p = xdr_reserve_space(xdr, len);
897 xdr_encode_opaque_fixed(p, buf, len);
898 }
899
900 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
901 {
902 __be32 *p;
903
904 p = reserve_space(xdr, 4 + len);
905 xdr_encode_opaque(p, str, len);
906 }
907
908 static void encode_uint32(struct xdr_stream *xdr, u32 n)
909 {
910 __be32 *p;
911
912 p = reserve_space(xdr, 4);
913 *p = cpu_to_be32(n);
914 }
915
916 static void encode_uint64(struct xdr_stream *xdr, u64 n)
917 {
918 __be32 *p;
919
920 p = reserve_space(xdr, 8);
921 xdr_encode_hyper(p, n);
922 }
923
924 static void encode_nfs4_seqid(struct xdr_stream *xdr,
925 const struct nfs_seqid *seqid)
926 {
927 encode_uint32(xdr, seqid->sequence->counter);
928 }
929
930 static void encode_compound_hdr(struct xdr_stream *xdr,
931 struct rpc_rqst *req,
932 struct compound_hdr *hdr)
933 {
934 __be32 *p;
935 struct rpc_auth *auth = req->rq_cred->cr_auth;
936
937 /* initialize running count of expected bytes in reply.
938 * NOTE: the replied tag SHOULD be the same is the one sent,
939 * but this is not required as a MUST for the server to do so. */
940 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
941
942 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
943 encode_string(xdr, hdr->taglen, hdr->tag);
944 p = reserve_space(xdr, 8);
945 *p++ = cpu_to_be32(hdr->minorversion);
946 hdr->nops_p = p;
947 *p = cpu_to_be32(hdr->nops);
948 }
949
950 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
951 uint32_t replen,
952 struct compound_hdr *hdr)
953 {
954 encode_uint32(xdr, op);
955 hdr->nops++;
956 hdr->replen += replen;
957 }
958
959 static void encode_nops(struct compound_hdr *hdr)
960 {
961 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
962 *hdr->nops_p = htonl(hdr->nops);
963 }
964
965 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
966 {
967 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
968 }
969
970 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
971 {
972 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
973 }
974
975 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
976 {
977 char owner_name[IDMAP_NAMESZ];
978 char owner_group[IDMAP_NAMESZ];
979 int owner_namelen = 0;
980 int owner_grouplen = 0;
981 __be32 *p;
982 __be32 *q;
983 int len;
984 uint32_t bmval0 = 0;
985 uint32_t bmval1 = 0;
986
987 /*
988 * We reserve enough space to write the entire attribute buffer at once.
989 * In the worst-case, this would be
990 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
991 * = 36 bytes, plus any contribution from variable-length fields
992 * such as owner/group.
993 */
994 len = 16;
995
996 /* Sigh */
997 if (iap->ia_valid & ATTR_SIZE)
998 len += 8;
999 if (iap->ia_valid & ATTR_MODE)
1000 len += 4;
1001 if (iap->ia_valid & ATTR_UID) {
1002 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1003 if (owner_namelen < 0) {
1004 dprintk("nfs: couldn't resolve uid %d to string\n",
1005 from_kuid(&init_user_ns, iap->ia_uid));
1006 /* XXX */
1007 strcpy(owner_name, "nobody");
1008 owner_namelen = sizeof("nobody") - 1;
1009 /* goto out; */
1010 }
1011 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1012 }
1013 if (iap->ia_valid & ATTR_GID) {
1014 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1015 if (owner_grouplen < 0) {
1016 dprintk("nfs: couldn't resolve gid %d to string\n",
1017 from_kgid(&init_user_ns, iap->ia_gid));
1018 strcpy(owner_group, "nobody");
1019 owner_grouplen = sizeof("nobody") - 1;
1020 /* goto out; */
1021 }
1022 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1023 }
1024 if (iap->ia_valid & ATTR_ATIME_SET)
1025 len += 16;
1026 else if (iap->ia_valid & ATTR_ATIME)
1027 len += 4;
1028 if (iap->ia_valid & ATTR_MTIME_SET)
1029 len += 16;
1030 else if (iap->ia_valid & ATTR_MTIME)
1031 len += 4;
1032 p = reserve_space(xdr, len);
1033
1034 /*
1035 * We write the bitmap length now, but leave the bitmap and the attribute
1036 * buffer length to be backfilled at the end of this routine.
1037 */
1038 *p++ = cpu_to_be32(2);
1039 q = p;
1040 p += 3;
1041
1042 if (iap->ia_valid & ATTR_SIZE) {
1043 bmval0 |= FATTR4_WORD0_SIZE;
1044 p = xdr_encode_hyper(p, iap->ia_size);
1045 }
1046 if (iap->ia_valid & ATTR_MODE) {
1047 bmval1 |= FATTR4_WORD1_MODE;
1048 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1049 }
1050 if (iap->ia_valid & ATTR_UID) {
1051 bmval1 |= FATTR4_WORD1_OWNER;
1052 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1053 }
1054 if (iap->ia_valid & ATTR_GID) {
1055 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1056 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1057 }
1058 if (iap->ia_valid & ATTR_ATIME_SET) {
1059 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1060 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1061 *p++ = cpu_to_be32(0);
1062 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1063 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1064 }
1065 else if (iap->ia_valid & ATTR_ATIME) {
1066 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1067 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1068 }
1069 if (iap->ia_valid & ATTR_MTIME_SET) {
1070 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1071 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1072 *p++ = cpu_to_be32(0);
1073 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1074 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1075 }
1076 else if (iap->ia_valid & ATTR_MTIME) {
1077 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1078 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1079 }
1080
1081 /*
1082 * Now we backfill the bitmap and the attribute buffer length.
1083 */
1084 if (len != ((char *)p - (char *)q) + 4) {
1085 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1086 len, ((char *)p - (char *)q) + 4);
1087 BUG();
1088 }
1089 len = (char *)p - (char *)q - 12;
1090 *q++ = htonl(bmval0);
1091 *q++ = htonl(bmval1);
1092 *q = htonl(len);
1093
1094 /* out: */
1095 }
1096
1097 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1098 {
1099 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1100 encode_uint32(xdr, access);
1101 }
1102
1103 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1104 {
1105 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1106 encode_nfs4_seqid(xdr, arg->seqid);
1107 encode_nfs4_stateid(xdr, arg->stateid);
1108 }
1109
1110 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1111 {
1112 __be32 *p;
1113
1114 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1115 p = reserve_space(xdr, 12);
1116 p = xdr_encode_hyper(p, args->offset);
1117 *p = cpu_to_be32(args->count);
1118 }
1119
1120 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1121 {
1122 __be32 *p;
1123
1124 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1125 encode_uint32(xdr, create->ftype);
1126
1127 switch (create->ftype) {
1128 case NF4LNK:
1129 p = reserve_space(xdr, 4);
1130 *p = cpu_to_be32(create->u.symlink.len);
1131 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1132 break;
1133
1134 case NF4BLK: case NF4CHR:
1135 p = reserve_space(xdr, 8);
1136 *p++ = cpu_to_be32(create->u.device.specdata1);
1137 *p = cpu_to_be32(create->u.device.specdata2);
1138 break;
1139
1140 default:
1141 break;
1142 }
1143
1144 encode_string(xdr, create->name->len, create->name->name);
1145 encode_attrs(xdr, create->attrs, create->server);
1146 }
1147
1148 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1149 {
1150 __be32 *p;
1151
1152 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1153 p = reserve_space(xdr, 8);
1154 *p++ = cpu_to_be32(1);
1155 *p = cpu_to_be32(bitmap);
1156 }
1157
1158 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1159 {
1160 __be32 *p;
1161
1162 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1163 p = reserve_space(xdr, 12);
1164 *p++ = cpu_to_be32(2);
1165 *p++ = cpu_to_be32(bm0);
1166 *p = cpu_to_be32(bm1);
1167 }
1168
1169 static void
1170 encode_getattr_three(struct xdr_stream *xdr,
1171 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1172 struct compound_hdr *hdr)
1173 {
1174 __be32 *p;
1175
1176 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1177 if (bm2) {
1178 p = reserve_space(xdr, 16);
1179 *p++ = cpu_to_be32(3);
1180 *p++ = cpu_to_be32(bm0);
1181 *p++ = cpu_to_be32(bm1);
1182 *p = cpu_to_be32(bm2);
1183 } else if (bm1) {
1184 p = reserve_space(xdr, 12);
1185 *p++ = cpu_to_be32(2);
1186 *p++ = cpu_to_be32(bm0);
1187 *p = cpu_to_be32(bm1);
1188 } else {
1189 p = reserve_space(xdr, 8);
1190 *p++ = cpu_to_be32(1);
1191 *p = cpu_to_be32(bm0);
1192 }
1193 }
1194
1195 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1196 {
1197 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1198 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1199 }
1200
1201 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1202 const u32 *open_bitmap,
1203 struct compound_hdr *hdr)
1204 {
1205 encode_getattr_three(xdr,
1206 bitmask[0] & open_bitmap[0],
1207 bitmask[1] & open_bitmap[1],
1208 bitmask[2] & open_bitmap[2],
1209 hdr);
1210 }
1211
1212 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1213 {
1214 encode_getattr_three(xdr,
1215 bitmask[0] & nfs4_fsinfo_bitmap[0],
1216 bitmask[1] & nfs4_fsinfo_bitmap[1],
1217 bitmask[2] & nfs4_fsinfo_bitmap[2],
1218 hdr);
1219 }
1220
1221 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1222 {
1223 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1224 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1225 }
1226
1227 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1228 {
1229 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1230 }
1231
1232 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1233 {
1234 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1235 encode_string(xdr, name->len, name->name);
1236 }
1237
1238 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1239 {
1240 if (fl->fl_type == F_RDLCK)
1241 return block ? NFS4_READW_LT : NFS4_READ_LT;
1242 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1243 }
1244
1245 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1246 {
1247 if (fl->fl_end == OFFSET_MAX)
1248 return ~(uint64_t)0;
1249 return fl->fl_end - fl->fl_start + 1;
1250 }
1251
1252 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1253 {
1254 __be32 *p;
1255
1256 p = reserve_space(xdr, 32);
1257 p = xdr_encode_hyper(p, lowner->clientid);
1258 *p++ = cpu_to_be32(20);
1259 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1260 *p++ = cpu_to_be32(lowner->s_dev);
1261 xdr_encode_hyper(p, lowner->id);
1262 }
1263
1264 /*
1265 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1266 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1267 */
1268 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1269 {
1270 __be32 *p;
1271
1272 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1273 p = reserve_space(xdr, 28);
1274 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1275 *p++ = cpu_to_be32(args->reclaim);
1276 p = xdr_encode_hyper(p, args->fl->fl_start);
1277 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1278 *p = cpu_to_be32(args->new_lock_owner);
1279 if (args->new_lock_owner){
1280 encode_nfs4_seqid(xdr, args->open_seqid);
1281 encode_nfs4_stateid(xdr, args->open_stateid);
1282 encode_nfs4_seqid(xdr, args->lock_seqid);
1283 encode_lockowner(xdr, &args->lock_owner);
1284 }
1285 else {
1286 encode_nfs4_stateid(xdr, args->lock_stateid);
1287 encode_nfs4_seqid(xdr, args->lock_seqid);
1288 }
1289 }
1290
1291 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1292 {
1293 __be32 *p;
1294
1295 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1296 p = reserve_space(xdr, 20);
1297 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1298 p = xdr_encode_hyper(p, args->fl->fl_start);
1299 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1300 encode_lockowner(xdr, &args->lock_owner);
1301 }
1302
1303 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1304 {
1305 __be32 *p;
1306
1307 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1308 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1309 encode_nfs4_seqid(xdr, args->seqid);
1310 encode_nfs4_stateid(xdr, args->stateid);
1311 p = reserve_space(xdr, 16);
1312 p = xdr_encode_hyper(p, args->fl->fl_start);
1313 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1314 }
1315
1316 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1317 {
1318 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1319 encode_lockowner(xdr, lowner);
1320 }
1321
1322 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1323 {
1324 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1325 encode_string(xdr, name->len, name->name);
1326 }
1327
1328 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1329 {
1330 __be32 *p;
1331
1332 p = reserve_space(xdr, 8);
1333 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1334 case FMODE_READ:
1335 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1336 break;
1337 case FMODE_WRITE:
1338 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1339 break;
1340 case FMODE_READ|FMODE_WRITE:
1341 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1342 break;
1343 default:
1344 *p++ = cpu_to_be32(0);
1345 }
1346 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1347 }
1348
1349 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1350 {
1351 __be32 *p;
1352 /*
1353 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1354 * owner 4 = 32
1355 */
1356 encode_nfs4_seqid(xdr, arg->seqid);
1357 encode_share_access(xdr, arg->fmode);
1358 p = reserve_space(xdr, 36);
1359 p = xdr_encode_hyper(p, arg->clientid);
1360 *p++ = cpu_to_be32(24);
1361 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1362 *p++ = cpu_to_be32(arg->server->s_dev);
1363 *p++ = cpu_to_be32(arg->id.uniquifier);
1364 xdr_encode_hyper(p, arg->id.create_time);
1365 }
1366
1367 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1368 {
1369 __be32 *p;
1370 struct nfs_client *clp;
1371
1372 p = reserve_space(xdr, 4);
1373 switch(arg->open_flags & O_EXCL) {
1374 case 0:
1375 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1376 encode_attrs(xdr, arg->u.attrs, arg->server);
1377 break;
1378 default:
1379 clp = arg->server->nfs_client;
1380 if (clp->cl_mvops->minor_version > 0) {
1381 if (nfs4_has_persistent_session(clp)) {
1382 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1383 encode_attrs(xdr, arg->u.attrs, arg->server);
1384 } else {
1385 struct iattr dummy;
1386
1387 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1388 encode_nfs4_verifier(xdr, &arg->u.verifier);
1389 dummy.ia_valid = 0;
1390 encode_attrs(xdr, &dummy, arg->server);
1391 }
1392 } else {
1393 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1394 encode_nfs4_verifier(xdr, &arg->u.verifier);
1395 }
1396 }
1397 }
1398
1399 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1400 {
1401 __be32 *p;
1402
1403 p = reserve_space(xdr, 4);
1404 switch (arg->open_flags & O_CREAT) {
1405 case 0:
1406 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1407 break;
1408 default:
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 inline void encode_claim_fh(struct xdr_stream *xdr)
1463 {
1464 __be32 *p;
1465
1466 p = reserve_space(xdr, 4);
1467 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1468 }
1469
1470 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1471 {
1472 __be32 *p;
1473
1474 p = reserve_space(xdr, 4);
1475 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1476 encode_nfs4_stateid(xdr, stateid);
1477 }
1478
1479 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1480 {
1481 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1482 encode_openhdr(xdr, arg);
1483 encode_opentype(xdr, arg);
1484 switch (arg->claim) {
1485 case NFS4_OPEN_CLAIM_NULL:
1486 encode_claim_null(xdr, arg->name);
1487 break;
1488 case NFS4_OPEN_CLAIM_PREVIOUS:
1489 encode_claim_previous(xdr, arg->u.delegation_type);
1490 break;
1491 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1492 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1493 break;
1494 case NFS4_OPEN_CLAIM_FH:
1495 encode_claim_fh(xdr);
1496 break;
1497 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1498 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1499 break;
1500 default:
1501 BUG();
1502 }
1503 }
1504
1505 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1506 {
1507 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1508 encode_nfs4_stateid(xdr, arg->stateid);
1509 encode_nfs4_seqid(xdr, arg->seqid);
1510 }
1511
1512 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1513 {
1514 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1515 encode_nfs4_stateid(xdr, arg->stateid);
1516 encode_nfs4_seqid(xdr, arg->seqid);
1517 encode_share_access(xdr, arg->fmode);
1518 }
1519
1520 static void
1521 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1522 {
1523 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1524 encode_string(xdr, fh->size, fh->data);
1525 }
1526
1527 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1528 {
1529 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1530 }
1531
1532 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1533 {
1534 __be32 *p;
1535
1536 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1537 encode_nfs4_stateid(xdr, &args->stateid);
1538
1539 p = reserve_space(xdr, 12);
1540 p = xdr_encode_hyper(p, args->offset);
1541 *p = cpu_to_be32(args->count);
1542 }
1543
1544 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1545 {
1546 uint32_t attrs[2] = {
1547 FATTR4_WORD0_RDATTR_ERROR,
1548 FATTR4_WORD1_MOUNTED_ON_FILEID,
1549 };
1550 uint32_t dircount = readdir->count >> 1;
1551 __be32 *p, verf[2];
1552
1553 if (readdir->plus) {
1554 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1555 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1556 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1557 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1558 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1559 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1560 dircount >>= 1;
1561 }
1562 /* Use mounted_on_fileid only if the server supports it */
1563 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1564 attrs[0] |= FATTR4_WORD0_FILEID;
1565
1566 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1567 encode_uint64(xdr, readdir->cookie);
1568 encode_nfs4_verifier(xdr, &readdir->verifier);
1569 p = reserve_space(xdr, 20);
1570 *p++ = cpu_to_be32(dircount);
1571 *p++ = cpu_to_be32(readdir->count);
1572 *p++ = cpu_to_be32(2);
1573
1574 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1575 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1576 memcpy(verf, readdir->verifier.data, sizeof(verf));
1577 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1578 __func__,
1579 (unsigned long long)readdir->cookie,
1580 verf[0], verf[1],
1581 attrs[0] & readdir->bitmask[0],
1582 attrs[1] & readdir->bitmask[1]);
1583 }
1584
1585 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1586 {
1587 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1588 }
1589
1590 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1591 {
1592 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1593 encode_string(xdr, name->len, name->name);
1594 }
1595
1596 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1597 {
1598 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1599 encode_string(xdr, oldname->len, oldname->name);
1600 encode_string(xdr, newname->len, newname->name);
1601 }
1602
1603 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1604 struct compound_hdr *hdr)
1605 {
1606 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1607 encode_uint64(xdr, clid);
1608 }
1609
1610 static void
1611 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1612 {
1613 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1614 }
1615
1616 static void
1617 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1618 {
1619 __be32 *p;
1620
1621 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1622 encode_nfs4_stateid(xdr, &zero_stateid);
1623 p = reserve_space(xdr, 2*4);
1624 *p++ = cpu_to_be32(1);
1625 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1626 p = reserve_space(xdr, 4);
1627 *p = cpu_to_be32(arg->acl_len);
1628 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1629 }
1630
1631 static void
1632 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1633 {
1634 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1635 }
1636
1637 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1638 {
1639 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1640 encode_nfs4_stateid(xdr, &arg->stateid);
1641 encode_attrs(xdr, arg->iap, server);
1642 }
1643
1644 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1645 {
1646 __be32 *p;
1647
1648 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1649 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1650
1651 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1652 p = reserve_space(xdr, 4);
1653 *p = cpu_to_be32(setclientid->sc_prog);
1654 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1655 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1656 p = reserve_space(xdr, 4);
1657 *p = cpu_to_be32(setclientid->sc_cb_ident);
1658 }
1659
1660 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1661 {
1662 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1663 decode_setclientid_confirm_maxsz, hdr);
1664 encode_uint64(xdr, arg->clientid);
1665 encode_nfs4_verifier(xdr, &arg->confirm);
1666 }
1667
1668 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1669 {
1670 __be32 *p;
1671
1672 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1673 encode_nfs4_stateid(xdr, &args->stateid);
1674
1675 p = reserve_space(xdr, 16);
1676 p = xdr_encode_hyper(p, args->offset);
1677 *p++ = cpu_to_be32(args->stable);
1678 *p = cpu_to_be32(args->count);
1679
1680 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1681 }
1682
1683 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1684 {
1685 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1686 encode_nfs4_stateid(xdr, stateid);
1687 }
1688
1689 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1690 {
1691 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1692 encode_string(xdr, name->len, name->name);
1693 }
1694
1695 #if defined(CONFIG_NFS_V4_1)
1696 /* NFSv4.1 operations */
1697 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1698 struct nfs4_session *session,
1699 struct compound_hdr *hdr)
1700 {
1701 __be32 *p;
1702
1703 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1704 decode_bind_conn_to_session_maxsz, hdr);
1705 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1706 p = xdr_reserve_space(xdr, 8);
1707 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1708 *p = 0; /* use_conn_in_rdma_mode = False */
1709 }
1710
1711 static void encode_exchange_id(struct xdr_stream *xdr,
1712 struct nfs41_exchange_id_args *args,
1713 struct compound_hdr *hdr)
1714 {
1715 __be32 *p;
1716 char impl_name[IMPL_NAME_LIMIT];
1717 int len = 0;
1718
1719 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1720 encode_nfs4_verifier(xdr, args->verifier);
1721
1722 encode_string(xdr, args->id_len, args->id);
1723
1724 p = reserve_space(xdr, 12);
1725 *p++ = cpu_to_be32(args->flags);
1726 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1727
1728 if (send_implementation_id &&
1729 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1730 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1731 <= sizeof(impl_name) + 1)
1732 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1733 utsname()->sysname, utsname()->release,
1734 utsname()->version, utsname()->machine);
1735
1736 if (len > 0) {
1737 *p = cpu_to_be32(1); /* implementation id array length=1 */
1738
1739 encode_string(xdr,
1740 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1741 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1742 encode_string(xdr, len, impl_name);
1743 /* just send zeros for nii_date - the date is in nii_name */
1744 p = reserve_space(xdr, 12);
1745 p = xdr_encode_hyper(p, 0);
1746 *p = cpu_to_be32(0);
1747 } else
1748 *p = cpu_to_be32(0); /* implementation id array length=0 */
1749 }
1750
1751 static void encode_create_session(struct xdr_stream *xdr,
1752 struct nfs41_create_session_args *args,
1753 struct compound_hdr *hdr)
1754 {
1755 __be32 *p;
1756 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1757 uint32_t len;
1758 struct nfs_client *clp = args->client;
1759 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1760 u32 max_resp_sz_cached;
1761
1762 /*
1763 * Assumes OPEN is the biggest non-idempotent compound.
1764 * 2 is the verifier.
1765 */
1766 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1767 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1768
1769 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1770 clp->cl_ipaddr);
1771
1772 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1773 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1774 p = xdr_encode_hyper(p, clp->cl_clientid);
1775 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1776 *p++ = cpu_to_be32(args->flags); /*flags */
1777
1778 /* Fore Channel */
1779 *p++ = cpu_to_be32(0); /* header padding size */
1780 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1781 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1782 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1783 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1784 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1785 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1786
1787 /* Back Channel */
1788 *p++ = cpu_to_be32(0); /* header padding size */
1789 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1790 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1791 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1792 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1793 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1794 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1795
1796 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1797 *p++ = cpu_to_be32(1);
1798 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1799
1800 /* authsys_parms rfc1831 */
1801 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1802 p = xdr_encode_opaque(p, machine_name, len);
1803 *p++ = cpu_to_be32(0); /* UID */
1804 *p++ = cpu_to_be32(0); /* GID */
1805 *p = cpu_to_be32(0); /* No more gids */
1806 }
1807
1808 static void encode_destroy_session(struct xdr_stream *xdr,
1809 struct nfs4_session *session,
1810 struct compound_hdr *hdr)
1811 {
1812 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1813 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1814 }
1815
1816 static void encode_destroy_clientid(struct xdr_stream *xdr,
1817 uint64_t clientid,
1818 struct compound_hdr *hdr)
1819 {
1820 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1821 encode_uint64(xdr, clientid);
1822 }
1823
1824 static void encode_reclaim_complete(struct xdr_stream *xdr,
1825 struct nfs41_reclaim_complete_args *args,
1826 struct compound_hdr *hdr)
1827 {
1828 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1829 encode_uint32(xdr, args->one_fs);
1830 }
1831 #endif /* CONFIG_NFS_V4_1 */
1832
1833 static void encode_sequence(struct xdr_stream *xdr,
1834 const struct nfs4_sequence_args *args,
1835 struct compound_hdr *hdr)
1836 {
1837 #if defined(CONFIG_NFS_V4_1)
1838 struct nfs4_session *session;
1839 struct nfs4_slot_table *tp;
1840 struct nfs4_slot *slot = args->sa_slot;
1841 __be32 *p;
1842
1843 if (slot == NULL)
1844 return;
1845
1846 tp = slot->table;
1847 session = tp->session;
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, slot->slot_nr,
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(slot->slot_nr);
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
2029 if (args->sa_slot)
2030 return args->sa_slot->table->session->clp->cl_mvops->minor_version;
2031 #endif /* CONFIG_NFS_V4_1 */
2032 return 0;
2033 }
2034
2035 /*
2036 * Encode an ACCESS request
2037 */
2038 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2039 const struct nfs4_accessargs *args)
2040 {
2041 struct compound_hdr hdr = {
2042 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2043 };
2044
2045 encode_compound_hdr(xdr, req, &hdr);
2046 encode_sequence(xdr, &args->seq_args, &hdr);
2047 encode_putfh(xdr, args->fh, &hdr);
2048 encode_access(xdr, args->access, &hdr);
2049 encode_getfattr(xdr, args->bitmask, &hdr);
2050 encode_nops(&hdr);
2051 }
2052
2053 /*
2054 * Encode LOOKUP request
2055 */
2056 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2057 const struct nfs4_lookup_arg *args)
2058 {
2059 struct compound_hdr hdr = {
2060 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2061 };
2062
2063 encode_compound_hdr(xdr, req, &hdr);
2064 encode_sequence(xdr, &args->seq_args, &hdr);
2065 encode_putfh(xdr, args->dir_fh, &hdr);
2066 encode_lookup(xdr, args->name, &hdr);
2067 encode_getfh(xdr, &hdr);
2068 encode_getfattr(xdr, args->bitmask, &hdr);
2069 encode_nops(&hdr);
2070 }
2071
2072 /*
2073 * Encode LOOKUP_ROOT request
2074 */
2075 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2076 struct xdr_stream *xdr,
2077 const struct nfs4_lookup_root_arg *args)
2078 {
2079 struct compound_hdr hdr = {
2080 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2081 };
2082
2083 encode_compound_hdr(xdr, req, &hdr);
2084 encode_sequence(xdr, &args->seq_args, &hdr);
2085 encode_putrootfh(xdr, &hdr);
2086 encode_getfh(xdr, &hdr);
2087 encode_getfattr(xdr, args->bitmask, &hdr);
2088 encode_nops(&hdr);
2089 }
2090
2091 /*
2092 * Encode REMOVE request
2093 */
2094 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2095 const struct nfs_removeargs *args)
2096 {
2097 struct compound_hdr hdr = {
2098 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2099 };
2100
2101 encode_compound_hdr(xdr, req, &hdr);
2102 encode_sequence(xdr, &args->seq_args, &hdr);
2103 encode_putfh(xdr, args->fh, &hdr);
2104 encode_remove(xdr, &args->name, &hdr);
2105 encode_nops(&hdr);
2106 }
2107
2108 /*
2109 * Encode RENAME request
2110 */
2111 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2112 const struct nfs_renameargs *args)
2113 {
2114 struct compound_hdr hdr = {
2115 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2116 };
2117
2118 encode_compound_hdr(xdr, req, &hdr);
2119 encode_sequence(xdr, &args->seq_args, &hdr);
2120 encode_putfh(xdr, args->old_dir, &hdr);
2121 encode_savefh(xdr, &hdr);
2122 encode_putfh(xdr, args->new_dir, &hdr);
2123 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2124 encode_nops(&hdr);
2125 }
2126
2127 /*
2128 * Encode LINK request
2129 */
2130 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2131 const struct nfs4_link_arg *args)
2132 {
2133 struct compound_hdr hdr = {
2134 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2135 };
2136
2137 encode_compound_hdr(xdr, req, &hdr);
2138 encode_sequence(xdr, &args->seq_args, &hdr);
2139 encode_putfh(xdr, args->fh, &hdr);
2140 encode_savefh(xdr, &hdr);
2141 encode_putfh(xdr, args->dir_fh, &hdr);
2142 encode_link(xdr, args->name, &hdr);
2143 encode_restorefh(xdr, &hdr);
2144 encode_getfattr(xdr, args->bitmask, &hdr);
2145 encode_nops(&hdr);
2146 }
2147
2148 /*
2149 * Encode CREATE request
2150 */
2151 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2152 const struct nfs4_create_arg *args)
2153 {
2154 struct compound_hdr hdr = {
2155 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2156 };
2157
2158 encode_compound_hdr(xdr, req, &hdr);
2159 encode_sequence(xdr, &args->seq_args, &hdr);
2160 encode_putfh(xdr, args->dir_fh, &hdr);
2161 encode_create(xdr, args, &hdr);
2162 encode_getfh(xdr, &hdr);
2163 encode_getfattr(xdr, args->bitmask, &hdr);
2164 encode_nops(&hdr);
2165 }
2166
2167 /*
2168 * Encode SYMLINK request
2169 */
2170 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2171 const struct nfs4_create_arg *args)
2172 {
2173 nfs4_xdr_enc_create(req, xdr, args);
2174 }
2175
2176 /*
2177 * Encode GETATTR request
2178 */
2179 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2180 const struct nfs4_getattr_arg *args)
2181 {
2182 struct compound_hdr hdr = {
2183 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2184 };
2185
2186 encode_compound_hdr(xdr, req, &hdr);
2187 encode_sequence(xdr, &args->seq_args, &hdr);
2188 encode_putfh(xdr, args->fh, &hdr);
2189 encode_getfattr(xdr, args->bitmask, &hdr);
2190 encode_nops(&hdr);
2191 }
2192
2193 /*
2194 * Encode a CLOSE request
2195 */
2196 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2197 struct nfs_closeargs *args)
2198 {
2199 struct compound_hdr hdr = {
2200 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2201 };
2202
2203 encode_compound_hdr(xdr, req, &hdr);
2204 encode_sequence(xdr, &args->seq_args, &hdr);
2205 encode_putfh(xdr, args->fh, &hdr);
2206 encode_close(xdr, args, &hdr);
2207 encode_getfattr(xdr, args->bitmask, &hdr);
2208 encode_nops(&hdr);
2209 }
2210
2211 /*
2212 * Encode an OPEN request
2213 */
2214 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2215 struct nfs_openargs *args)
2216 {
2217 struct compound_hdr hdr = {
2218 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2219 };
2220
2221 encode_compound_hdr(xdr, req, &hdr);
2222 encode_sequence(xdr, &args->seq_args, &hdr);
2223 encode_putfh(xdr, args->fh, &hdr);
2224 encode_open(xdr, args, &hdr);
2225 encode_getfh(xdr, &hdr);
2226 if (args->access)
2227 encode_access(xdr, args->access, &hdr);
2228 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2229 encode_nops(&hdr);
2230 }
2231
2232 /*
2233 * Encode an OPEN_CONFIRM request
2234 */
2235 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2236 struct xdr_stream *xdr,
2237 struct nfs_open_confirmargs *args)
2238 {
2239 struct compound_hdr hdr = {
2240 .nops = 0,
2241 };
2242
2243 encode_compound_hdr(xdr, req, &hdr);
2244 encode_putfh(xdr, args->fh, &hdr);
2245 encode_open_confirm(xdr, args, &hdr);
2246 encode_nops(&hdr);
2247 }
2248
2249 /*
2250 * Encode an OPEN request with no attributes.
2251 */
2252 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2253 struct xdr_stream *xdr,
2254 struct nfs_openargs *args)
2255 {
2256 struct compound_hdr hdr = {
2257 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2258 };
2259
2260 encode_compound_hdr(xdr, req, &hdr);
2261 encode_sequence(xdr, &args->seq_args, &hdr);
2262 encode_putfh(xdr, args->fh, &hdr);
2263 encode_open(xdr, args, &hdr);
2264 if (args->access)
2265 encode_access(xdr, args->access, &hdr);
2266 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2267 encode_nops(&hdr);
2268 }
2269
2270 /*
2271 * Encode an OPEN_DOWNGRADE request
2272 */
2273 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2274 struct xdr_stream *xdr,
2275 struct nfs_closeargs *args)
2276 {
2277 struct compound_hdr hdr = {
2278 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2279 };
2280
2281 encode_compound_hdr(xdr, req, &hdr);
2282 encode_sequence(xdr, &args->seq_args, &hdr);
2283 encode_putfh(xdr, args->fh, &hdr);
2284 encode_open_downgrade(xdr, args, &hdr);
2285 encode_getfattr(xdr, args->bitmask, &hdr);
2286 encode_nops(&hdr);
2287 }
2288
2289 /*
2290 * Encode a LOCK request
2291 */
2292 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2293 struct nfs_lock_args *args)
2294 {
2295 struct compound_hdr hdr = {
2296 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2297 };
2298
2299 encode_compound_hdr(xdr, req, &hdr);
2300 encode_sequence(xdr, &args->seq_args, &hdr);
2301 encode_putfh(xdr, args->fh, &hdr);
2302 encode_lock(xdr, args, &hdr);
2303 encode_nops(&hdr);
2304 }
2305
2306 /*
2307 * Encode a LOCKT request
2308 */
2309 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2310 struct nfs_lockt_args *args)
2311 {
2312 struct compound_hdr hdr = {
2313 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2314 };
2315
2316 encode_compound_hdr(xdr, req, &hdr);
2317 encode_sequence(xdr, &args->seq_args, &hdr);
2318 encode_putfh(xdr, args->fh, &hdr);
2319 encode_lockt(xdr, args, &hdr);
2320 encode_nops(&hdr);
2321 }
2322
2323 /*
2324 * Encode a LOCKU request
2325 */
2326 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2327 struct nfs_locku_args *args)
2328 {
2329 struct compound_hdr hdr = {
2330 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2331 };
2332
2333 encode_compound_hdr(xdr, req, &hdr);
2334 encode_sequence(xdr, &args->seq_args, &hdr);
2335 encode_putfh(xdr, args->fh, &hdr);
2336 encode_locku(xdr, args, &hdr);
2337 encode_nops(&hdr);
2338 }
2339
2340 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2341 struct xdr_stream *xdr,
2342 struct nfs_release_lockowner_args *args)
2343 {
2344 struct compound_hdr hdr = {
2345 .minorversion = 0,
2346 };
2347
2348 encode_compound_hdr(xdr, req, &hdr);
2349 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2350 encode_nops(&hdr);
2351 }
2352
2353 /*
2354 * Encode a READLINK request
2355 */
2356 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2357 const struct nfs4_readlink *args)
2358 {
2359 struct compound_hdr hdr = {
2360 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2361 };
2362
2363 encode_compound_hdr(xdr, req, &hdr);
2364 encode_sequence(xdr, &args->seq_args, &hdr);
2365 encode_putfh(xdr, args->fh, &hdr);
2366 encode_readlink(xdr, args, req, &hdr);
2367
2368 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2369 args->pgbase, args->pglen);
2370 encode_nops(&hdr);
2371 }
2372
2373 /*
2374 * Encode a READDIR request
2375 */
2376 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2377 const struct nfs4_readdir_arg *args)
2378 {
2379 struct compound_hdr hdr = {
2380 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2381 };
2382
2383 encode_compound_hdr(xdr, req, &hdr);
2384 encode_sequence(xdr, &args->seq_args, &hdr);
2385 encode_putfh(xdr, args->fh, &hdr);
2386 encode_readdir(xdr, args, req, &hdr);
2387
2388 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2389 args->pgbase, args->count);
2390 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2391 __func__, hdr.replen << 2, args->pages,
2392 args->pgbase, args->count);
2393 encode_nops(&hdr);
2394 }
2395
2396 /*
2397 * Encode a READ request
2398 */
2399 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2400 struct nfs_readargs *args)
2401 {
2402 struct compound_hdr hdr = {
2403 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2404 };
2405
2406 encode_compound_hdr(xdr, req, &hdr);
2407 encode_sequence(xdr, &args->seq_args, &hdr);
2408 encode_putfh(xdr, args->fh, &hdr);
2409 encode_read(xdr, args, &hdr);
2410
2411 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2412 args->pages, args->pgbase, args->count);
2413 req->rq_rcv_buf.flags |= XDRBUF_READ;
2414 encode_nops(&hdr);
2415 }
2416
2417 /*
2418 * Encode an SETATTR request
2419 */
2420 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2421 struct nfs_setattrargs *args)
2422 {
2423 struct compound_hdr hdr = {
2424 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2425 };
2426
2427 encode_compound_hdr(xdr, req, &hdr);
2428 encode_sequence(xdr, &args->seq_args, &hdr);
2429 encode_putfh(xdr, args->fh, &hdr);
2430 encode_setattr(xdr, args, args->server, &hdr);
2431 encode_getfattr(xdr, args->bitmask, &hdr);
2432 encode_nops(&hdr);
2433 }
2434
2435 /*
2436 * Encode a GETACL request
2437 */
2438 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2439 struct nfs_getaclargs *args)
2440 {
2441 struct compound_hdr hdr = {
2442 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2443 };
2444 uint32_t replen;
2445
2446 encode_compound_hdr(xdr, req, &hdr);
2447 encode_sequence(xdr, &args->seq_args, &hdr);
2448 encode_putfh(xdr, args->fh, &hdr);
2449 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2450 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2451
2452 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2453 args->acl_pages, args->acl_pgbase, args->acl_len);
2454
2455 encode_nops(&hdr);
2456 }
2457
2458 /*
2459 * Encode a WRITE request
2460 */
2461 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2462 struct nfs_writeargs *args)
2463 {
2464 struct compound_hdr hdr = {
2465 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2466 };
2467
2468 encode_compound_hdr(xdr, req, &hdr);
2469 encode_sequence(xdr, &args->seq_args, &hdr);
2470 encode_putfh(xdr, args->fh, &hdr);
2471 encode_write(xdr, args, &hdr);
2472 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2473 if (args->bitmask)
2474 encode_getfattr(xdr, args->bitmask, &hdr);
2475 encode_nops(&hdr);
2476 }
2477
2478 /*
2479 * a COMMIT request
2480 */
2481 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2482 struct nfs_commitargs *args)
2483 {
2484 struct compound_hdr hdr = {
2485 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2486 };
2487
2488 encode_compound_hdr(xdr, req, &hdr);
2489 encode_sequence(xdr, &args->seq_args, &hdr);
2490 encode_putfh(xdr, args->fh, &hdr);
2491 encode_commit(xdr, args, &hdr);
2492 encode_nops(&hdr);
2493 }
2494
2495 /*
2496 * FSINFO request
2497 */
2498 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2499 struct nfs4_fsinfo_arg *args)
2500 {
2501 struct compound_hdr hdr = {
2502 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2503 };
2504
2505 encode_compound_hdr(xdr, req, &hdr);
2506 encode_sequence(xdr, &args->seq_args, &hdr);
2507 encode_putfh(xdr, args->fh, &hdr);
2508 encode_fsinfo(xdr, args->bitmask, &hdr);
2509 encode_nops(&hdr);
2510 }
2511
2512 /*
2513 * a PATHCONF request
2514 */
2515 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2516 const struct nfs4_pathconf_arg *args)
2517 {
2518 struct compound_hdr hdr = {
2519 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2520 };
2521
2522 encode_compound_hdr(xdr, req, &hdr);
2523 encode_sequence(xdr, &args->seq_args, &hdr);
2524 encode_putfh(xdr, args->fh, &hdr);
2525 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2526 &hdr);
2527 encode_nops(&hdr);
2528 }
2529
2530 /*
2531 * a STATFS request
2532 */
2533 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2534 const struct nfs4_statfs_arg *args)
2535 {
2536 struct compound_hdr hdr = {
2537 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2538 };
2539
2540 encode_compound_hdr(xdr, req, &hdr);
2541 encode_sequence(xdr, &args->seq_args, &hdr);
2542 encode_putfh(xdr, args->fh, &hdr);
2543 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2544 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2545 encode_nops(&hdr);
2546 }
2547
2548 /*
2549 * GETATTR_BITMAP request
2550 */
2551 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2552 struct xdr_stream *xdr,
2553 struct nfs4_server_caps_arg *args)
2554 {
2555 struct compound_hdr hdr = {
2556 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2557 };
2558
2559 encode_compound_hdr(xdr, req, &hdr);
2560 encode_sequence(xdr, &args->seq_args, &hdr);
2561 encode_putfh(xdr, args->fhandle, &hdr);
2562 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2563 FATTR4_WORD0_FH_EXPIRE_TYPE|
2564 FATTR4_WORD0_LINK_SUPPORT|
2565 FATTR4_WORD0_SYMLINK_SUPPORT|
2566 FATTR4_WORD0_ACLSUPPORT, &hdr);
2567 encode_nops(&hdr);
2568 }
2569
2570 /*
2571 * a RENEW request
2572 */
2573 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2574 struct nfs_client *clp)
2575 {
2576 struct compound_hdr hdr = {
2577 .nops = 0,
2578 };
2579
2580 encode_compound_hdr(xdr, req, &hdr);
2581 encode_renew(xdr, clp->cl_clientid, &hdr);
2582 encode_nops(&hdr);
2583 }
2584
2585 /*
2586 * a SETCLIENTID request
2587 */
2588 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2589 struct xdr_stream *xdr,
2590 struct nfs4_setclientid *sc)
2591 {
2592 struct compound_hdr hdr = {
2593 .nops = 0,
2594 };
2595
2596 encode_compound_hdr(xdr, req, &hdr);
2597 encode_setclientid(xdr, sc, &hdr);
2598 encode_nops(&hdr);
2599 }
2600
2601 /*
2602 * a SETCLIENTID_CONFIRM request
2603 */
2604 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2605 struct xdr_stream *xdr,
2606 struct nfs4_setclientid_res *arg)
2607 {
2608 struct compound_hdr hdr = {
2609 .nops = 0,
2610 };
2611 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2612
2613 encode_compound_hdr(xdr, req, &hdr);
2614 encode_setclientid_confirm(xdr, arg, &hdr);
2615 encode_putrootfh(xdr, &hdr);
2616 encode_fsinfo(xdr, lease_bitmap, &hdr);
2617 encode_nops(&hdr);
2618 }
2619
2620 /*
2621 * DELEGRETURN request
2622 */
2623 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2624 struct xdr_stream *xdr,
2625 const struct nfs4_delegreturnargs *args)
2626 {
2627 struct compound_hdr hdr = {
2628 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2629 };
2630
2631 encode_compound_hdr(xdr, req, &hdr);
2632 encode_sequence(xdr, &args->seq_args, &hdr);
2633 encode_putfh(xdr, args->fhandle, &hdr);
2634 encode_getfattr(xdr, args->bitmask, &hdr);
2635 encode_delegreturn(xdr, args->stateid, &hdr);
2636 encode_nops(&hdr);
2637 }
2638
2639 /*
2640 * Encode FS_LOCATIONS request
2641 */
2642 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2643 struct xdr_stream *xdr,
2644 struct nfs4_fs_locations_arg *args)
2645 {
2646 struct compound_hdr hdr = {
2647 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2648 };
2649 uint32_t replen;
2650
2651 encode_compound_hdr(xdr, req, &hdr);
2652 encode_sequence(xdr, &args->seq_args, &hdr);
2653 encode_putfh(xdr, args->dir_fh, &hdr);
2654 encode_lookup(xdr, args->name, &hdr);
2655 replen = hdr.replen; /* get the attribute into args->page */
2656 encode_fs_locations(xdr, args->bitmask, &hdr);
2657
2658 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2659 0, PAGE_SIZE);
2660 encode_nops(&hdr);
2661 }
2662
2663 /*
2664 * Encode SECINFO request
2665 */
2666 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2667 struct xdr_stream *xdr,
2668 struct nfs4_secinfo_arg *args)
2669 {
2670 struct compound_hdr hdr = {
2671 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2672 };
2673
2674 encode_compound_hdr(xdr, req, &hdr);
2675 encode_sequence(xdr, &args->seq_args, &hdr);
2676 encode_putfh(xdr, args->dir_fh, &hdr);
2677 encode_secinfo(xdr, args->name, &hdr);
2678 encode_nops(&hdr);
2679 }
2680
2681 #if defined(CONFIG_NFS_V4_1)
2682 /*
2683 * BIND_CONN_TO_SESSION request
2684 */
2685 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2686 struct xdr_stream *xdr,
2687 struct nfs_client *clp)
2688 {
2689 struct compound_hdr hdr = {
2690 .minorversion = clp->cl_mvops->minor_version,
2691 };
2692
2693 encode_compound_hdr(xdr, req, &hdr);
2694 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2695 encode_nops(&hdr);
2696 }
2697
2698 /*
2699 * EXCHANGE_ID request
2700 */
2701 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2702 struct xdr_stream *xdr,
2703 struct nfs41_exchange_id_args *args)
2704 {
2705 struct compound_hdr hdr = {
2706 .minorversion = args->client->cl_mvops->minor_version,
2707 };
2708
2709 encode_compound_hdr(xdr, req, &hdr);
2710 encode_exchange_id(xdr, args, &hdr);
2711 encode_nops(&hdr);
2712 }
2713
2714 /*
2715 * a CREATE_SESSION request
2716 */
2717 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2718 struct xdr_stream *xdr,
2719 struct nfs41_create_session_args *args)
2720 {
2721 struct compound_hdr hdr = {
2722 .minorversion = args->client->cl_mvops->minor_version,
2723 };
2724
2725 encode_compound_hdr(xdr, req, &hdr);
2726 encode_create_session(xdr, args, &hdr);
2727 encode_nops(&hdr);
2728 }
2729
2730 /*
2731 * a DESTROY_SESSION request
2732 */
2733 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2734 struct xdr_stream *xdr,
2735 struct nfs4_session *session)
2736 {
2737 struct compound_hdr hdr = {
2738 .minorversion = session->clp->cl_mvops->minor_version,
2739 };
2740
2741 encode_compound_hdr(xdr, req, &hdr);
2742 encode_destroy_session(xdr, session, &hdr);
2743 encode_nops(&hdr);
2744 }
2745
2746 /*
2747 * a DESTROY_CLIENTID request
2748 */
2749 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2750 struct xdr_stream *xdr,
2751 struct nfs_client *clp)
2752 {
2753 struct compound_hdr hdr = {
2754 .minorversion = clp->cl_mvops->minor_version,
2755 };
2756
2757 encode_compound_hdr(xdr, req, &hdr);
2758 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2759 encode_nops(&hdr);
2760 }
2761
2762 /*
2763 * a SEQUENCE request
2764 */
2765 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2766 struct nfs4_sequence_args *args)
2767 {
2768 struct compound_hdr hdr = {
2769 .minorversion = nfs4_xdr_minorversion(args),
2770 };
2771
2772 encode_compound_hdr(xdr, req, &hdr);
2773 encode_sequence(xdr, args, &hdr);
2774 encode_nops(&hdr);
2775 }
2776
2777 /*
2778 * a GET_LEASE_TIME request
2779 */
2780 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2781 struct xdr_stream *xdr,
2782 struct nfs4_get_lease_time_args *args)
2783 {
2784 struct compound_hdr hdr = {
2785 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2786 };
2787 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2788
2789 encode_compound_hdr(xdr, req, &hdr);
2790 encode_sequence(xdr, &args->la_seq_args, &hdr);
2791 encode_putrootfh(xdr, &hdr);
2792 encode_fsinfo(xdr, lease_bitmap, &hdr);
2793 encode_nops(&hdr);
2794 }
2795
2796 /*
2797 * a RECLAIM_COMPLETE request
2798 */
2799 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2800 struct xdr_stream *xdr,
2801 struct nfs41_reclaim_complete_args *args)
2802 {
2803 struct compound_hdr hdr = {
2804 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2805 };
2806
2807 encode_compound_hdr(xdr, req, &hdr);
2808 encode_sequence(xdr, &args->seq_args, &hdr);
2809 encode_reclaim_complete(xdr, args, &hdr);
2810 encode_nops(&hdr);
2811 }
2812
2813 /*
2814 * Encode GETDEVICELIST request
2815 */
2816 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2817 struct xdr_stream *xdr,
2818 struct nfs4_getdevicelist_args *args)
2819 {
2820 struct compound_hdr hdr = {
2821 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2822 };
2823
2824 encode_compound_hdr(xdr, req, &hdr);
2825 encode_sequence(xdr, &args->seq_args, &hdr);
2826 encode_putfh(xdr, args->fh, &hdr);
2827 encode_getdevicelist(xdr, args, &hdr);
2828 encode_nops(&hdr);
2829 }
2830
2831 /*
2832 * Encode GETDEVICEINFO request
2833 */
2834 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2835 struct xdr_stream *xdr,
2836 struct nfs4_getdeviceinfo_args *args)
2837 {
2838 struct compound_hdr hdr = {
2839 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2840 };
2841
2842 encode_compound_hdr(xdr, req, &hdr);
2843 encode_sequence(xdr, &args->seq_args, &hdr);
2844 encode_getdeviceinfo(xdr, args, &hdr);
2845
2846 /* set up reply kvec. Subtract notification bitmap max size (2)
2847 * so that notification bitmap is put in xdr_buf tail */
2848 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2849 args->pdev->pages, args->pdev->pgbase,
2850 args->pdev->pglen);
2851
2852 encode_nops(&hdr);
2853 }
2854
2855 /*
2856 * Encode LAYOUTGET request
2857 */
2858 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2859 struct xdr_stream *xdr,
2860 struct nfs4_layoutget_args *args)
2861 {
2862 struct compound_hdr hdr = {
2863 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2864 };
2865
2866 encode_compound_hdr(xdr, req, &hdr);
2867 encode_sequence(xdr, &args->seq_args, &hdr);
2868 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2869 encode_layoutget(xdr, args, &hdr);
2870
2871 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2872 args->layout.pages, 0, args->layout.pglen);
2873
2874 encode_nops(&hdr);
2875 }
2876
2877 /*
2878 * Encode LAYOUTCOMMIT request
2879 */
2880 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2881 struct xdr_stream *xdr,
2882 struct nfs4_layoutcommit_args *args)
2883 {
2884 struct nfs4_layoutcommit_data *data =
2885 container_of(args, struct nfs4_layoutcommit_data, args);
2886 struct compound_hdr hdr = {
2887 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2888 };
2889
2890 encode_compound_hdr(xdr, req, &hdr);
2891 encode_sequence(xdr, &args->seq_args, &hdr);
2892 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2893 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2894 encode_getfattr(xdr, args->bitmask, &hdr);
2895 encode_nops(&hdr);
2896 }
2897
2898 /*
2899 * Encode LAYOUTRETURN request
2900 */
2901 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2902 struct xdr_stream *xdr,
2903 struct nfs4_layoutreturn_args *args)
2904 {
2905 struct compound_hdr hdr = {
2906 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2907 };
2908
2909 encode_compound_hdr(xdr, req, &hdr);
2910 encode_sequence(xdr, &args->seq_args, &hdr);
2911 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2912 encode_layoutreturn(xdr, args, &hdr);
2913 encode_nops(&hdr);
2914 }
2915
2916 /*
2917 * Encode SECINFO_NO_NAME request
2918 */
2919 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2920 struct xdr_stream *xdr,
2921 struct nfs41_secinfo_no_name_args *args)
2922 {
2923 struct compound_hdr hdr = {
2924 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2925 };
2926
2927 encode_compound_hdr(xdr, req, &hdr);
2928 encode_sequence(xdr, &args->seq_args, &hdr);
2929 encode_putrootfh(xdr, &hdr);
2930 encode_secinfo_no_name(xdr, args, &hdr);
2931 encode_nops(&hdr);
2932 return 0;
2933 }
2934
2935 /*
2936 * Encode TEST_STATEID request
2937 */
2938 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2939 struct xdr_stream *xdr,
2940 struct nfs41_test_stateid_args *args)
2941 {
2942 struct compound_hdr hdr = {
2943 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2944 };
2945
2946 encode_compound_hdr(xdr, req, &hdr);
2947 encode_sequence(xdr, &args->seq_args, &hdr);
2948 encode_test_stateid(xdr, args, &hdr);
2949 encode_nops(&hdr);
2950 }
2951
2952 /*
2953 * Encode FREE_STATEID request
2954 */
2955 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2956 struct xdr_stream *xdr,
2957 struct nfs41_free_stateid_args *args)
2958 {
2959 struct compound_hdr hdr = {
2960 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2961 };
2962
2963 encode_compound_hdr(xdr, req, &hdr);
2964 encode_sequence(xdr, &args->seq_args, &hdr);
2965 encode_free_stateid(xdr, args, &hdr);
2966 encode_nops(&hdr);
2967 }
2968 #endif /* CONFIG_NFS_V4_1 */
2969
2970 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2971 {
2972 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2973 "Remaining buffer length is %tu words.\n",
2974 func, xdr->end - xdr->p);
2975 }
2976
2977 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2978 {
2979 __be32 *p;
2980
2981 p = xdr_inline_decode(xdr, 4);
2982 if (unlikely(!p))
2983 goto out_overflow;
2984 *len = be32_to_cpup(p);
2985 p = xdr_inline_decode(xdr, *len);
2986 if (unlikely(!p))
2987 goto out_overflow;
2988 *string = (char *)p;
2989 return 0;
2990 out_overflow:
2991 print_overflow_msg(__func__, xdr);
2992 return -EIO;
2993 }
2994
2995 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2996 {
2997 __be32 *p;
2998
2999 p = xdr_inline_decode(xdr, 8);
3000 if (unlikely(!p))
3001 goto out_overflow;
3002 hdr->status = be32_to_cpup(p++);
3003 hdr->taglen = be32_to_cpup(p);
3004
3005 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3006 if (unlikely(!p))
3007 goto out_overflow;
3008 hdr->tag = (char *)p;
3009 p += XDR_QUADLEN(hdr->taglen);
3010 hdr->nops = be32_to_cpup(p);
3011 if (unlikely(hdr->nops < 1))
3012 return nfs4_stat_to_errno(hdr->status);
3013 return 0;
3014 out_overflow:
3015 print_overflow_msg(__func__, xdr);
3016 return -EIO;
3017 }
3018
3019 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3020 {
3021 __be32 *p;
3022 uint32_t opnum;
3023 int32_t nfserr;
3024
3025 p = xdr_inline_decode(xdr, 8);
3026 if (unlikely(!p))
3027 goto out_overflow;
3028 opnum = be32_to_cpup(p++);
3029 if (opnum != expected) {
3030 dprintk("nfs: Server returned operation"
3031 " %d but we issued a request for %d\n",
3032 opnum, expected);
3033 return -EIO;
3034 }
3035 nfserr = be32_to_cpup(p);
3036 if (nfserr != NFS_OK)
3037 return nfs4_stat_to_errno(nfserr);
3038 return 0;
3039 out_overflow:
3040 print_overflow_msg(__func__, xdr);
3041 return -EIO;
3042 }
3043
3044 /* Dummy routine */
3045 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3046 {
3047 __be32 *p;
3048 unsigned int strlen;
3049 char *str;
3050
3051 p = xdr_inline_decode(xdr, 12);
3052 if (likely(p))
3053 return decode_opaque_inline(xdr, &strlen, &str);
3054 print_overflow_msg(__func__, xdr);
3055 return -EIO;
3056 }
3057
3058 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3059 {
3060 uint32_t bmlen;
3061 __be32 *p;
3062
3063 p = xdr_inline_decode(xdr, 4);
3064 if (unlikely(!p))
3065 goto out_overflow;
3066 bmlen = be32_to_cpup(p);
3067
3068 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3069 p = xdr_inline_decode(xdr, (bmlen << 2));
3070 if (unlikely(!p))
3071 goto out_overflow;
3072 if (bmlen > 0) {
3073 bitmap[0] = be32_to_cpup(p++);
3074 if (bmlen > 1) {
3075 bitmap[1] = be32_to_cpup(p++);
3076 if (bmlen > 2)
3077 bitmap[2] = be32_to_cpup(p);
3078 }
3079 }
3080 return 0;
3081 out_overflow:
3082 print_overflow_msg(__func__, xdr);
3083 return -EIO;
3084 }
3085
3086 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3087 {
3088 __be32 *p;
3089
3090 p = xdr_inline_decode(xdr, 4);
3091 if (unlikely(!p))
3092 goto out_overflow;
3093 *attrlen = be32_to_cpup(p);
3094 *savep = xdr_stream_pos(xdr);
3095 return 0;
3096 out_overflow:
3097 print_overflow_msg(__func__, xdr);
3098 return -EIO;
3099 }
3100
3101 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3102 {
3103 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3104 int ret;
3105 ret = decode_attr_bitmap(xdr, bitmask);
3106 if (unlikely(ret < 0))
3107 return ret;
3108 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3109 } else
3110 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3111 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3112 bitmask[0], bitmask[1], bitmask[2]);
3113 return 0;
3114 }
3115
3116 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3117 {
3118 __be32 *p;
3119 int ret = 0;
3120
3121 *type = 0;
3122 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3123 return -EIO;
3124 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3125 p = xdr_inline_decode(xdr, 4);
3126 if (unlikely(!p))
3127 goto out_overflow;
3128 *type = be32_to_cpup(p);
3129 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3130 dprintk("%s: bad type %d\n", __func__, *type);
3131 return -EIO;
3132 }
3133 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3134 ret = NFS_ATTR_FATTR_TYPE;
3135 }
3136 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3137 return ret;
3138 out_overflow:
3139 print_overflow_msg(__func__, xdr);
3140 return -EIO;
3141 }
3142
3143 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3144 uint32_t *bitmap, uint32_t *type)
3145 {
3146 __be32 *p;
3147
3148 *type = 0;
3149 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3150 return -EIO;
3151 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3152 p = xdr_inline_decode(xdr, 4);
3153 if (unlikely(!p))
3154 goto out_overflow;
3155 *type = be32_to_cpup(p);
3156 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3157 }
3158 dprintk("%s: expire type=0x%x\n", __func__, *type);
3159 return 0;
3160 out_overflow:
3161 print_overflow_msg(__func__, xdr);
3162 return -EIO;
3163 }
3164
3165 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3166 {
3167 __be32 *p;
3168 int ret = 0;
3169
3170 *change = 0;
3171 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3172 return -EIO;
3173 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3174 p = xdr_inline_decode(xdr, 8);
3175 if (unlikely(!p))
3176 goto out_overflow;
3177 xdr_decode_hyper(p, change);
3178 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3179 ret = NFS_ATTR_FATTR_CHANGE;
3180 }
3181 dprintk("%s: change attribute=%Lu\n", __func__,
3182 (unsigned long long)*change);
3183 return ret;
3184 out_overflow:
3185 print_overflow_msg(__func__, xdr);
3186 return -EIO;
3187 }
3188
3189 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3190 {
3191 __be32 *p;
3192 int ret = 0;
3193
3194 *size = 0;
3195 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3196 return -EIO;
3197 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3198 p = xdr_inline_decode(xdr, 8);
3199 if (unlikely(!p))
3200 goto out_overflow;
3201 xdr_decode_hyper(p, size);
3202 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3203 ret = NFS_ATTR_FATTR_SIZE;
3204 }
3205 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3206 return ret;
3207 out_overflow:
3208 print_overflow_msg(__func__, xdr);
3209 return -EIO;
3210 }
3211
3212 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3213 {
3214 __be32 *p;
3215
3216 *res = 0;
3217 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3218 return -EIO;
3219 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3220 p = xdr_inline_decode(xdr, 4);
3221 if (unlikely(!p))
3222 goto out_overflow;
3223 *res = be32_to_cpup(p);
3224 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3225 }
3226 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3227 return 0;
3228 out_overflow:
3229 print_overflow_msg(__func__, xdr);
3230 return -EIO;
3231 }
3232
3233 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3234 {
3235 __be32 *p;
3236
3237 *res = 0;
3238 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3239 return -EIO;
3240 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3241 p = xdr_inline_decode(xdr, 4);
3242 if (unlikely(!p))
3243 goto out_overflow;
3244 *res = be32_to_cpup(p);
3245 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3246 }
3247 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3248 return 0;
3249 out_overflow:
3250 print_overflow_msg(__func__, xdr);
3251 return -EIO;
3252 }
3253
3254 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3255 {
3256 __be32 *p;
3257 int ret = 0;
3258
3259 fsid->major = 0;
3260 fsid->minor = 0;
3261 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3262 return -EIO;
3263 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3264 p = xdr_inline_decode(xdr, 16);
3265 if (unlikely(!p))
3266 goto out_overflow;
3267 p = xdr_decode_hyper(p, &fsid->major);
3268 xdr_decode_hyper(p, &fsid->minor);
3269 bitmap[0] &= ~FATTR4_WORD0_FSID;
3270 ret = NFS_ATTR_FATTR_FSID;
3271 }
3272 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3273 (unsigned long long)fsid->major,
3274 (unsigned long long)fsid->minor);
3275 return ret;
3276 out_overflow:
3277 print_overflow_msg(__func__, xdr);
3278 return -EIO;
3279 }
3280
3281 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3282 {
3283 __be32 *p;
3284
3285 *res = 60;
3286 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3287 return -EIO;
3288 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3289 p = xdr_inline_decode(xdr, 4);
3290 if (unlikely(!p))
3291 goto out_overflow;
3292 *res = be32_to_cpup(p);
3293 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3294 }
3295 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3296 return 0;
3297 out_overflow:
3298 print_overflow_msg(__func__, xdr);
3299 return -EIO;
3300 }
3301
3302 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3303 {
3304 __be32 *p;
3305
3306 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3307 return -EIO;
3308 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3309 p = xdr_inline_decode(xdr, 4);
3310 if (unlikely(!p))
3311 goto out_overflow;
3312 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3313 *res = -be32_to_cpup(p);
3314 }
3315 return 0;
3316 out_overflow:
3317 print_overflow_msg(__func__, xdr);
3318 return -EIO;
3319 }
3320
3321 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3322 {
3323 __be32 *p;
3324 int len;
3325
3326 if (fh != NULL)
3327 memset(fh, 0, sizeof(*fh));
3328
3329 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3330 return -EIO;
3331 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3332 p = xdr_inline_decode(xdr, 4);
3333 if (unlikely(!p))
3334 goto out_overflow;
3335 len = be32_to_cpup(p);
3336 if (len > NFS4_FHSIZE)
3337 return -EIO;
3338 p = xdr_inline_decode(xdr, len);
3339 if (unlikely(!p))
3340 goto out_overflow;
3341 if (fh != NULL) {
3342 memcpy(fh->data, p, len);
3343 fh->size = len;
3344 }
3345 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3346 }
3347 return 0;
3348 out_overflow:
3349 print_overflow_msg(__func__, xdr);
3350 return -EIO;
3351 }
3352
3353 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3354 {
3355 __be32 *p;
3356
3357 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3358 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3359 return -EIO;
3360 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3361 p = xdr_inline_decode(xdr, 4);
3362 if (unlikely(!p))
3363 goto out_overflow;
3364 *res = be32_to_cpup(p);
3365 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3366 }
3367 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3368 return 0;
3369 out_overflow:
3370 print_overflow_msg(__func__, xdr);
3371 return -EIO;
3372 }
3373
3374 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3375 {
3376 __be32 *p;
3377 int ret = 0;
3378
3379 *fileid = 0;
3380 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3381 return -EIO;
3382 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3383 p = xdr_inline_decode(xdr, 8);
3384 if (unlikely(!p))
3385 goto out_overflow;
3386 xdr_decode_hyper(p, fileid);
3387 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3388 ret = NFS_ATTR_FATTR_FILEID;
3389 }
3390 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3391 return ret;
3392 out_overflow:
3393 print_overflow_msg(__func__, xdr);
3394 return -EIO;
3395 }
3396
3397 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3398 {
3399 __be32 *p;
3400 int ret = 0;
3401
3402 *fileid = 0;
3403 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3404 return -EIO;
3405 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3406 p = xdr_inline_decode(xdr, 8);
3407 if (unlikely(!p))
3408 goto out_overflow;
3409 xdr_decode_hyper(p, fileid);
3410 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3411 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3412 }
3413 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3414 return ret;
3415 out_overflow:
3416 print_overflow_msg(__func__, xdr);
3417 return -EIO;
3418 }
3419
3420 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3421 {
3422 __be32 *p;
3423 int status = 0;
3424
3425 *res = 0;
3426 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3427 return -EIO;
3428 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3429 p = xdr_inline_decode(xdr, 8);
3430 if (unlikely(!p))
3431 goto out_overflow;
3432 xdr_decode_hyper(p, res);
3433 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3434 }
3435 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3436 return status;
3437 out_overflow:
3438 print_overflow_msg(__func__, xdr);
3439 return -EIO;
3440 }
3441
3442 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3443 {
3444 __be32 *p;
3445 int status = 0;
3446
3447 *res = 0;
3448 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3449 return -EIO;
3450 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3451 p = xdr_inline_decode(xdr, 8);
3452 if (unlikely(!p))
3453 goto out_overflow;
3454 xdr_decode_hyper(p, res);
3455 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3456 }
3457 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3458 return status;
3459 out_overflow:
3460 print_overflow_msg(__func__, xdr);
3461 return -EIO;
3462 }
3463
3464 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3465 {
3466 __be32 *p;
3467 int status = 0;
3468
3469 *res = 0;
3470 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3471 return -EIO;
3472 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3473 p = xdr_inline_decode(xdr, 8);
3474 if (unlikely(!p))
3475 goto out_overflow;
3476 xdr_decode_hyper(p, res);
3477 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3478 }
3479 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3480 return status;
3481 out_overflow:
3482 print_overflow_msg(__func__, xdr);
3483 return -EIO;
3484 }
3485
3486 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3487 {
3488 u32 n;
3489 __be32 *p;
3490 int status = 0;
3491
3492 p = xdr_inline_decode(xdr, 4);
3493 if (unlikely(!p))
3494 goto out_overflow;
3495 n = be32_to_cpup(p);
3496 if (n == 0)
3497 goto root_path;
3498 dprintk("pathname4: ");
3499 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3500 dprintk("cannot parse %d components in path\n", n);
3501 goto out_eio;
3502 }
3503 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3504 struct nfs4_string *component = &path->components[path->ncomponents];
3505 status = decode_opaque_inline(xdr, &component->len, &component->data);
3506 if (unlikely(status != 0))
3507 goto out_eio;
3508 ifdebug (XDR)
3509 pr_cont("%s%.*s ",
3510 (path->ncomponents != n ? "/ " : ""),
3511 component->len, component->data);
3512 }
3513 out:
3514 return status;
3515 root_path:
3516 /* a root pathname is sent as a zero component4 */
3517 path->ncomponents = 1;
3518 path->components[0].len=0;
3519 path->components[0].data=NULL;
3520 dprintk("pathname4: /\n");
3521 goto out;
3522 out_eio:
3523 dprintk(" status %d", status);
3524 status = -EIO;
3525 goto out;
3526 out_overflow:
3527 print_overflow_msg(__func__, xdr);
3528 return -EIO;
3529 }
3530
3531 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3532 {
3533 int n;
3534 __be32 *p;
3535 int status = -EIO;
3536
3537 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3538 goto out;
3539 status = 0;
3540 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3541 goto out;
3542 status = -EIO;
3543 /* Ignore borken servers that return unrequested attrs */
3544 if (unlikely(res == NULL))
3545 goto out;
3546 dprintk("%s: fsroot:\n", __func__);
3547 status = decode_pathname(xdr, &res->fs_path);
3548 if (unlikely(status != 0))
3549 goto out;
3550 p = xdr_inline_decode(xdr, 4);
3551 if (unlikely(!p))
3552 goto out_overflow;
3553 n = be32_to_cpup(p);
3554 if (n <= 0)
3555 goto out_eio;
3556 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3557 u32 m;
3558 struct nfs4_fs_location *loc;
3559
3560 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3561 break;
3562 loc = &res->locations[res->nlocations];
3563 p = xdr_inline_decode(xdr, 4);
3564 if (unlikely(!p))
3565 goto out_overflow;
3566 m = be32_to_cpup(p);
3567
3568 dprintk("%s: servers:\n", __func__);
3569 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3570 struct nfs4_string *server;
3571
3572 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3573 unsigned int i;
3574 dprintk("%s: using first %u of %u servers "
3575 "returned for location %u\n",
3576 __func__,
3577 NFS4_FS_LOCATION_MAXSERVERS,
3578 m, res->nlocations);
3579 for (i = loc->nservers; i < m; i++) {
3580 unsigned int len;
3581 char *data;
3582 status = decode_opaque_inline(xdr, &len, &data);
3583 if (unlikely(status != 0))
3584 goto out_eio;
3585 }
3586 break;
3587 }
3588 server = &loc->servers[loc->nservers];
3589 status = decode_opaque_inline(xdr, &server->len, &server->data);
3590 if (unlikely(status != 0))
3591 goto out_eio;
3592 dprintk("%s ", server->data);
3593 }
3594 status = decode_pathname(xdr, &loc->rootpath);
3595 if (unlikely(status != 0))
3596 goto out_eio;
3597 }
3598 if (res->nlocations != 0)
3599 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3600 out:
3601 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3602 return status;
3603 out_overflow:
3604 print_overflow_msg(__func__, xdr);
3605 out_eio:
3606 status = -EIO;
3607 goto out;
3608 }
3609
3610 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3611 {
3612 __be32 *p;
3613 int status = 0;
3614
3615 *res = 0;
3616 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3617 return -EIO;
3618 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3619 p = xdr_inline_decode(xdr, 8);
3620 if (unlikely(!p))
3621 goto out_overflow;
3622 xdr_decode_hyper(p, res);
3623 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3624 }
3625 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3626 return status;
3627 out_overflow:
3628 print_overflow_msg(__func__, xdr);
3629 return -EIO;
3630 }
3631
3632 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3633 {
3634 __be32 *p;
3635 int status = 0;
3636
3637 *maxlink = 1;
3638 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3639 return -EIO;
3640 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3641 p = xdr_inline_decode(xdr, 4);
3642 if (unlikely(!p))
3643 goto out_overflow;
3644 *maxlink = be32_to_cpup(p);
3645 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3646 }
3647 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3648 return status;
3649 out_overflow:
3650 print_overflow_msg(__func__, xdr);
3651 return -EIO;
3652 }
3653
3654 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3655 {
3656 __be32 *p;
3657 int status = 0;
3658
3659 *maxname = 1024;
3660 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3661 return -EIO;
3662 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3663 p = xdr_inline_decode(xdr, 4);
3664 if (unlikely(!p))
3665 goto out_overflow;
3666 *maxname = be32_to_cpup(p);
3667 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3668 }
3669 dprintk("%s: maxname=%u\n", __func__, *maxname);
3670 return status;
3671 out_overflow:
3672 print_overflow_msg(__func__, xdr);
3673 return -EIO;
3674 }
3675
3676 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3677 {
3678 __be32 *p;
3679 int status = 0;
3680
3681 *res = 1024;
3682 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3683 return -EIO;
3684 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3685 uint64_t maxread;
3686 p = xdr_inline_decode(xdr, 8);
3687 if (unlikely(!p))
3688 goto out_overflow;
3689 xdr_decode_hyper(p, &maxread);
3690 if (maxread > 0x7FFFFFFF)
3691 maxread = 0x7FFFFFFF;
3692 *res = (uint32_t)maxread;
3693 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3694 }
3695 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3696 return status;
3697 out_overflow:
3698 print_overflow_msg(__func__, xdr);
3699 return -EIO;
3700 }
3701
3702 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3703 {
3704 __be32 *p;
3705 int status = 0;
3706
3707 *res = 1024;
3708 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3709 return -EIO;
3710 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3711 uint64_t maxwrite;
3712 p = xdr_inline_decode(xdr, 8);
3713 if (unlikely(!p))
3714 goto out_overflow;
3715 xdr_decode_hyper(p, &maxwrite);
3716 if (maxwrite > 0x7FFFFFFF)
3717 maxwrite = 0x7FFFFFFF;
3718 *res = (uint32_t)maxwrite;
3719 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3720 }
3721 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3722 return status;
3723 out_overflow:
3724 print_overflow_msg(__func__, xdr);
3725 return -EIO;
3726 }
3727
3728 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3729 {
3730 uint32_t tmp;
3731 __be32 *p;
3732 int ret = 0;
3733
3734 *mode = 0;
3735 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3736 return -EIO;
3737 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3738 p = xdr_inline_decode(xdr, 4);
3739 if (unlikely(!p))
3740 goto out_overflow;
3741 tmp = be32_to_cpup(p);
3742 *mode = tmp & ~S_IFMT;
3743 bitmap[1] &= ~FATTR4_WORD1_MODE;
3744 ret = NFS_ATTR_FATTR_MODE;
3745 }
3746 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3747 return ret;
3748 out_overflow:
3749 print_overflow_msg(__func__, xdr);
3750 return -EIO;
3751 }
3752
3753 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3754 {
3755 __be32 *p;
3756 int ret = 0;
3757
3758 *nlink = 1;
3759 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3760 return -EIO;
3761 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3762 p = xdr_inline_decode(xdr, 4);
3763 if (unlikely(!p))
3764 goto out_overflow;
3765 *nlink = be32_to_cpup(p);
3766 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3767 ret = NFS_ATTR_FATTR_NLINK;
3768 }
3769 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3770 return ret;
3771 out_overflow:
3772 print_overflow_msg(__func__, xdr);
3773 return -EIO;
3774 }
3775
3776 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3777 const struct nfs_server *server, kuid_t *uid,
3778 struct nfs4_string *owner_name)
3779 {
3780 uint32_t len;
3781 __be32 *p;
3782 int ret = 0;
3783
3784 *uid = make_kuid(&init_user_ns, -2);
3785 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3786 return -EIO;
3787 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3788 p = xdr_inline_decode(xdr, 4);
3789 if (unlikely(!p))
3790 goto out_overflow;
3791 len = be32_to_cpup(p);
3792 p = xdr_inline_decode(xdr, len);
3793 if (unlikely(!p))
3794 goto out_overflow;
3795 if (owner_name != NULL) {
3796 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3797 if (owner_name->data != NULL) {
3798 owner_name->len = len;
3799 ret = NFS_ATTR_FATTR_OWNER_NAME;
3800 }
3801 } else if (len < XDR_MAX_NETOBJ) {
3802 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3803 ret = NFS_ATTR_FATTR_OWNER;
3804 else
3805 dprintk("%s: nfs_map_name_to_uid failed!\n",
3806 __func__);
3807 } else
3808 dprintk("%s: name too long (%u)!\n",
3809 __func__, len);
3810 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3811 }
3812 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3813 return ret;
3814 out_overflow:
3815 print_overflow_msg(__func__, xdr);
3816 return -EIO;
3817 }
3818
3819 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3820 const struct nfs_server *server, kgid_t *gid,
3821 struct nfs4_string *group_name)
3822 {
3823 uint32_t len;
3824 __be32 *p;
3825 int ret = 0;
3826
3827 *gid = make_kgid(&init_user_ns, -2);
3828 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3829 return -EIO;
3830 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3831 p = xdr_inline_decode(xdr, 4);
3832 if (unlikely(!p))
3833 goto out_overflow;
3834 len = be32_to_cpup(p);
3835 p = xdr_inline_decode(xdr, len);
3836 if (unlikely(!p))
3837 goto out_overflow;
3838 if (group_name != NULL) {
3839 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3840 if (group_name->data != NULL) {
3841 group_name->len = len;
3842 ret = NFS_ATTR_FATTR_GROUP_NAME;
3843 }
3844 } else if (len < XDR_MAX_NETOBJ) {
3845 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3846 ret = NFS_ATTR_FATTR_GROUP;
3847 else
3848 dprintk("%s: nfs_map_group_to_gid failed!\n",
3849 __func__);
3850 } else
3851 dprintk("%s: name too long (%u)!\n",
3852 __func__, len);
3853 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3854 }
3855 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3856 return ret;
3857 out_overflow:
3858 print_overflow_msg(__func__, xdr);
3859 return -EIO;
3860 }
3861
3862 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3863 {
3864 uint32_t major = 0, minor = 0;
3865 __be32 *p;
3866 int ret = 0;
3867
3868 *rdev = MKDEV(0,0);
3869 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3870 return -EIO;
3871 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3872 dev_t tmp;
3873
3874 p = xdr_inline_decode(xdr, 8);
3875 if (unlikely(!p))
3876 goto out_overflow;
3877 major = be32_to_cpup(p++);
3878 minor = be32_to_cpup(p);
3879 tmp = MKDEV(major, minor);
3880 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3881 *rdev = tmp;
3882 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3883 ret = NFS_ATTR_FATTR_RDEV;
3884 }
3885 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3886 return ret;
3887 out_overflow:
3888 print_overflow_msg(__func__, xdr);
3889 return -EIO;
3890 }
3891
3892 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3893 {
3894 __be32 *p;
3895 int status = 0;
3896
3897 *res = 0;
3898 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3899 return -EIO;
3900 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3901 p = xdr_inline_decode(xdr, 8);
3902 if (unlikely(!p))
3903 goto out_overflow;
3904 xdr_decode_hyper(p, res);
3905 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3906 }
3907 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3908 return status;
3909 out_overflow:
3910 print_overflow_msg(__func__, xdr);
3911 return -EIO;
3912 }
3913
3914 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3915 {
3916 __be32 *p;
3917 int status = 0;
3918
3919 *res = 0;
3920 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3921 return -EIO;
3922 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3923 p = xdr_inline_decode(xdr, 8);
3924 if (unlikely(!p))
3925 goto out_overflow;
3926 xdr_decode_hyper(p, res);
3927 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3928 }
3929 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3930 return status;
3931 out_overflow:
3932 print_overflow_msg(__func__, xdr);
3933 return -EIO;
3934 }
3935
3936 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3937 {
3938 __be32 *p;
3939 int status = 0;
3940
3941 *res = 0;
3942 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3943 return -EIO;
3944 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3945 p = xdr_inline_decode(xdr, 8);
3946 if (unlikely(!p))
3947 goto out_overflow;
3948 xdr_decode_hyper(p, res);
3949 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3950 }
3951 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3952 return status;
3953 out_overflow:
3954 print_overflow_msg(__func__, xdr);
3955 return -EIO;
3956 }
3957
3958 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3959 {
3960 __be32 *p;
3961 int ret = 0;
3962
3963 *used = 0;
3964 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3965 return -EIO;
3966 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3967 p = xdr_inline_decode(xdr, 8);
3968 if (unlikely(!p))
3969 goto out_overflow;
3970 xdr_decode_hyper(p, used);
3971 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3972 ret = NFS_ATTR_FATTR_SPACE_USED;
3973 }
3974 dprintk("%s: space used=%Lu\n", __func__,
3975 (unsigned long long)*used);
3976 return ret;
3977 out_overflow:
3978 print_overflow_msg(__func__, xdr);
3979 return -EIO;
3980 }
3981
3982 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3983 {
3984 __be32 *p;
3985 uint64_t sec;
3986 uint32_t nsec;
3987
3988 p = xdr_inline_decode(xdr, 12);
3989 if (unlikely(!p))
3990 goto out_overflow;
3991 p = xdr_decode_hyper(p, &sec);
3992 nsec = be32_to_cpup(p);
3993 time->tv_sec = (time_t)sec;
3994 time->tv_nsec = (long)nsec;
3995 return 0;
3996 out_overflow:
3997 print_overflow_msg(__func__, xdr);
3998 return -EIO;
3999 }
4000
4001 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4002 {
4003 int status = 0;
4004
4005 time->tv_sec = 0;
4006 time->tv_nsec = 0;
4007 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4008 return -EIO;
4009 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4010 status = decode_attr_time(xdr, time);
4011 if (status == 0)
4012 status = NFS_ATTR_FATTR_ATIME;
4013 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4014 }
4015 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4016 return status;
4017 }
4018
4019 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4020 {
4021 int status = 0;
4022
4023 time->tv_sec = 0;
4024 time->tv_nsec = 0;
4025 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4026 return -EIO;
4027 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4028 status = decode_attr_time(xdr, time);
4029 if (status == 0)
4030 status = NFS_ATTR_FATTR_CTIME;
4031 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4032 }
4033 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4034 return status;
4035 }
4036
4037 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4038 struct timespec *time)
4039 {
4040 int status = 0;
4041
4042 time->tv_sec = 0;
4043 time->tv_nsec = 0;
4044 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4045 return -EIO;
4046 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4047 status = decode_attr_time(xdr, time);
4048 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4049 }
4050 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4051 (long)time->tv_nsec);
4052 return status;
4053 }
4054
4055 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4056 {
4057 int status = 0;
4058
4059 time->tv_sec = 0;
4060 time->tv_nsec = 0;
4061 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4062 return -EIO;
4063 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4064 status = decode_attr_time(xdr, time);
4065 if (status == 0)
4066 status = NFS_ATTR_FATTR_MTIME;
4067 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4068 }
4069 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4070 return status;
4071 }
4072
4073 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4074 {
4075 unsigned int attrwords = XDR_QUADLEN(attrlen);
4076 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4077
4078 if (unlikely(attrwords != nwords)) {
4079 dprintk("%s: server returned incorrect attribute length: "
4080 "%u %c %u\n",
4081 __func__,
4082 attrwords << 2,
4083 (attrwords < nwords) ? '<' : '>',
4084 nwords << 2);
4085 return -EIO;
4086 }
4087 return 0;
4088 }
4089
4090 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4091 {
4092 __be32 *p;
4093
4094 p = xdr_inline_decode(xdr, 20);
4095 if (unlikely(!p))
4096 goto out_overflow;
4097 cinfo->atomic = be32_to_cpup(p++);
4098 p = xdr_decode_hyper(p, &cinfo->before);
4099 xdr_decode_hyper(p, &cinfo->after);
4100 return 0;
4101 out_overflow:
4102 print_overflow_msg(__func__, xdr);
4103 return -EIO;
4104 }
4105
4106 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4107 {
4108 __be32 *p;
4109 uint32_t supp, acc;
4110 int status;
4111
4112 status = decode_op_hdr(xdr, OP_ACCESS);
4113 if (status)
4114 return status;
4115 p = xdr_inline_decode(xdr, 8);
4116 if (unlikely(!p))
4117 goto out_overflow;
4118 supp = be32_to_cpup(p++);
4119 acc = be32_to_cpup(p);
4120 *supported = supp;
4121 *access = acc;
4122 return 0;
4123 out_overflow:
4124 print_overflow_msg(__func__, xdr);
4125 return -EIO;
4126 }
4127
4128 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4129 {
4130 __be32 *p;
4131
4132 p = xdr_inline_decode(xdr, len);
4133 if (likely(p)) {
4134 memcpy(buf, p, len);
4135 return 0;
4136 }
4137 print_overflow_msg(__func__, xdr);
4138 return -EIO;
4139 }
4140
4141 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4142 {
4143 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4144 }
4145
4146 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4147 {
4148 int status;
4149
4150 status = decode_op_hdr(xdr, OP_CLOSE);
4151 if (status != -EIO)
4152 nfs_increment_open_seqid(status, res->seqid);
4153 if (!status)
4154 status = decode_stateid(xdr, &res->stateid);
4155 return status;
4156 }
4157
4158 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4159 {
4160 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4161 }
4162
4163 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4164 {
4165 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4166 }
4167
4168 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4169 {
4170 int status;
4171
4172 status = decode_op_hdr(xdr, OP_COMMIT);
4173 if (!status)
4174 status = decode_write_verifier(xdr, &res->verf->verifier);
4175 return status;
4176 }
4177
4178 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4179 {
4180 __be32 *p;
4181 uint32_t bmlen;
4182 int status;
4183
4184 status = decode_op_hdr(xdr, OP_CREATE);
4185 if (status)
4186 return status;
4187 if ((status = decode_change_info(xdr, cinfo)))
4188 return status;
4189 p = xdr_inline_decode(xdr, 4);
4190 if (unlikely(!p))
4191 goto out_overflow;
4192 bmlen = be32_to_cpup(p);
4193 p = xdr_inline_decode(xdr, bmlen << 2);
4194 if (likely(p))
4195 return 0;
4196 out_overflow:
4197 print_overflow_msg(__func__, xdr);
4198 return -EIO;
4199 }
4200
4201 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4202 {
4203 unsigned int savep;
4204 uint32_t attrlen, bitmap[3] = {0};
4205 int status;
4206
4207 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4208 goto xdr_error;
4209 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4210 goto xdr_error;
4211 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4212 goto xdr_error;
4213 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4214 goto xdr_error;
4215 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4216 &res->fh_expire_type)) != 0)
4217 goto xdr_error;
4218 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4219 goto xdr_error;
4220 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4221 goto xdr_error;
4222 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4223 goto xdr_error;
4224 status = verify_attr_len(xdr, savep, attrlen);
4225 xdr_error:
4226 dprintk("%s: xdr returned %d!\n", __func__, -status);
4227 return status;
4228 }
4229
4230 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4231 {
4232 unsigned int savep;
4233 uint32_t attrlen, bitmap[3] = {0};
4234 int status;
4235
4236 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4237 goto xdr_error;
4238 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4239 goto xdr_error;
4240 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4241 goto xdr_error;
4242
4243 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4244 goto xdr_error;
4245 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4246 goto xdr_error;
4247 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4248 goto xdr_error;
4249 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4250 goto xdr_error;
4251 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4252 goto xdr_error;
4253 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4254 goto xdr_error;
4255
4256 status = verify_attr_len(xdr, savep, attrlen);
4257 xdr_error:
4258 dprintk("%s: xdr returned %d!\n", __func__, -status);
4259 return status;
4260 }
4261
4262 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4263 {
4264 unsigned int savep;
4265 uint32_t attrlen, bitmap[3] = {0};
4266 int status;
4267
4268 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4269 goto xdr_error;
4270 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4271 goto xdr_error;
4272 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4273 goto xdr_error;
4274
4275 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4276 goto xdr_error;
4277 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4278 goto xdr_error;
4279
4280 status = verify_attr_len(xdr, savep, attrlen);
4281 xdr_error:
4282 dprintk("%s: xdr returned %d!\n", __func__, -status);
4283 return status;
4284 }
4285
4286 static int decode_threshold_hint(struct xdr_stream *xdr,
4287 uint32_t *bitmap,
4288 uint64_t *res,
4289 uint32_t hint_bit)
4290 {
4291 __be32 *p;
4292
4293 *res = 0;
4294 if (likely(bitmap[0] & hint_bit)) {
4295 p = xdr_inline_decode(xdr, 8);
4296 if (unlikely(!p))
4297 goto out_overflow;
4298 xdr_decode_hyper(p, res);
4299 }
4300 return 0;
4301 out_overflow:
4302 print_overflow_msg(__func__, xdr);
4303 return -EIO;
4304 }
4305
4306 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4307 struct nfs4_threshold *res)
4308 {
4309 __be32 *p;
4310 unsigned int savep;
4311 uint32_t bitmap[3] = {0,}, attrlen;
4312 int status;
4313
4314 /* layout type */
4315 p = xdr_inline_decode(xdr, 4);
4316 if (unlikely(!p)) {
4317 print_overflow_msg(__func__, xdr);
4318 return -EIO;
4319 }
4320 res->l_type = be32_to_cpup(p);
4321
4322 /* thi_hintset bitmap */
4323 status = decode_attr_bitmap(xdr, bitmap);
4324 if (status < 0)
4325 goto xdr_error;
4326
4327 /* thi_hintlist length */
4328 status = decode_attr_length(xdr, &attrlen, &savep);
4329 if (status < 0)
4330 goto xdr_error;
4331 /* thi_hintlist */
4332 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4333 if (status < 0)
4334 goto xdr_error;
4335 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4336 if (status < 0)
4337 goto xdr_error;
4338 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4339 THRESHOLD_RD_IO);
4340 if (status < 0)
4341 goto xdr_error;
4342 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4343 THRESHOLD_WR_IO);
4344 if (status < 0)
4345 goto xdr_error;
4346
4347 status = verify_attr_len(xdr, savep, attrlen);
4348 res->bm = bitmap[0];
4349
4350 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4351 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4352 res->wr_io_sz);
4353 xdr_error:
4354 dprintk("%s ret=%d!\n", __func__, status);
4355 return status;
4356 }
4357
4358 /*
4359 * Thresholds on pNFS direct I/O vrs MDS I/O
4360 */
4361 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4362 uint32_t *bitmap,
4363 struct nfs4_threshold *res)
4364 {
4365 __be32 *p;
4366 int status = 0;
4367 uint32_t num;
4368
4369 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4370 return -EIO;
4371 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4372 /* Did the server return an unrequested attribute? */
4373 if (unlikely(res == NULL))
4374 return -EREMOTEIO;
4375 p = xdr_inline_decode(xdr, 4);
4376 if (unlikely(!p))
4377 goto out_overflow;
4378 num = be32_to_cpup(p);
4379 if (num == 0)
4380 return 0;
4381 if (num > 1)
4382 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4383 "drivers per filesystem not supported\n",
4384 __func__);
4385
4386 status = decode_first_threshold_item4(xdr, res);
4387 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4388 }
4389 return status;
4390 out_overflow:
4391 print_overflow_msg(__func__, xdr);
4392 return -EIO;
4393 }
4394
4395 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4396 struct nfs_fattr *fattr, struct nfs_fh *fh,
4397 struct nfs4_fs_locations *fs_loc,
4398 const struct nfs_server *server)
4399 {
4400 int status;
4401 umode_t fmode = 0;
4402 uint32_t type;
4403 int32_t err;
4404
4405 status = decode_attr_type(xdr, bitmap, &type);
4406 if (status < 0)
4407 goto xdr_error;
4408 fattr->mode = 0;
4409 if (status != 0) {
4410 fattr->mode |= nfs_type2fmt[type];
4411 fattr->valid |= status;
4412 }
4413
4414 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4415 if (status < 0)
4416 goto xdr_error;
4417 fattr->valid |= status;
4418
4419 status = decode_attr_size(xdr, bitmap, &fattr->size);
4420 if (status < 0)
4421 goto xdr_error;
4422 fattr->valid |= status;
4423
4424 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4425 if (status < 0)
4426 goto xdr_error;
4427 fattr->valid |= status;
4428
4429 err = 0;
4430 status = decode_attr_error(xdr, bitmap, &err);
4431 if (status < 0)
4432 goto xdr_error;
4433
4434 status = decode_attr_filehandle(xdr, bitmap, fh);
4435 if (status < 0)
4436 goto xdr_error;
4437
4438 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4439 if (status < 0)
4440 goto xdr_error;
4441 fattr->valid |= status;
4442
4443 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4444 if (status < 0)
4445 goto xdr_error;
4446 fattr->valid |= status;
4447
4448 status = decode_attr_mode(xdr, bitmap, &fmode);
4449 if (status < 0)
4450 goto xdr_error;
4451 if (status != 0) {
4452 fattr->mode |= fmode;
4453 fattr->valid |= status;
4454 }
4455
4456 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4457 if (status < 0)
4458 goto xdr_error;
4459 fattr->valid |= status;
4460
4461 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4462 if (status < 0)
4463 goto xdr_error;
4464 fattr->valid |= status;
4465
4466 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4467 if (status < 0)
4468 goto xdr_error;
4469 fattr->valid |= status;
4470
4471 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4472 if (status < 0)
4473 goto xdr_error;
4474 fattr->valid |= status;
4475
4476 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4477 if (status < 0)
4478 goto xdr_error;
4479 fattr->valid |= status;
4480
4481 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4482 if (status < 0)
4483 goto xdr_error;
4484 fattr->valid |= status;
4485
4486 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4487 if (status < 0)
4488 goto xdr_error;
4489 fattr->valid |= status;
4490
4491 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4492 if (status < 0)
4493 goto xdr_error;
4494 fattr->valid |= status;
4495
4496 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4497 if (status < 0)
4498 goto xdr_error;
4499 fattr->valid |= status;
4500
4501 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4502 if (status < 0)
4503 goto xdr_error;
4504
4505 xdr_error:
4506 dprintk("%s: xdr returned %d\n", __func__, -status);
4507 return status;
4508 }
4509
4510 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4511 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4512 const struct nfs_server *server)
4513 {
4514 unsigned int savep;
4515 uint32_t attrlen,
4516 bitmap[3] = {0};
4517 int status;
4518
4519 status = decode_op_hdr(xdr, OP_GETATTR);
4520 if (status < 0)
4521 goto xdr_error;
4522
4523 status = decode_attr_bitmap(xdr, bitmap);
4524 if (status < 0)
4525 goto xdr_error;
4526
4527 status = decode_attr_length(xdr, &attrlen, &savep);
4528 if (status < 0)
4529 goto xdr_error;
4530
4531 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4532 if (status < 0)
4533 goto xdr_error;
4534
4535 status = verify_attr_len(xdr, savep, attrlen);
4536 xdr_error:
4537 dprintk("%s: xdr returned %d\n", __func__, -status);
4538 return status;
4539 }
4540
4541 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4542 const struct nfs_server *server)
4543 {
4544 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4545 }
4546
4547 /*
4548 * Decode potentially multiple layout types. Currently we only support
4549 * one layout driver per file system.
4550 */
4551 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4552 uint32_t *layouttype)
4553 {
4554 uint32_t *p;
4555 int num;
4556
4557 p = xdr_inline_decode(xdr, 4);
4558 if (unlikely(!p))
4559 goto out_overflow;
4560 num = be32_to_cpup(p);
4561
4562 /* pNFS is not supported by the underlying file system */
4563 if (num == 0) {
4564 *layouttype = 0;
4565 return 0;
4566 }
4567 if (num > 1)
4568 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4569 "drivers per filesystem not supported\n", __func__);
4570
4571 /* Decode and set first layout type, move xdr->p past unused types */
4572 p = xdr_inline_decode(xdr, num * 4);
4573 if (unlikely(!p))
4574 goto out_overflow;
4575 *layouttype = be32_to_cpup(p);
4576 return 0;
4577 out_overflow:
4578 print_overflow_msg(__func__, xdr);
4579 return -EIO;
4580 }
4581
4582 /*
4583 * The type of file system exported.
4584 * Note we must ensure that layouttype is set in any non-error case.
4585 */
4586 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4587 uint32_t *layouttype)
4588 {
4589 int status = 0;
4590
4591 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4592 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4593 return -EIO;
4594 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4595 status = decode_first_pnfs_layout_type(xdr, layouttype);
4596 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4597 } else
4598 *layouttype = 0;
4599 return status;
4600 }
4601
4602 /*
4603 * The prefered block size for layout directed io
4604 */
4605 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4606 uint32_t *res)
4607 {
4608 __be32 *p;
4609
4610 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4611 *res = 0;
4612 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4613 p = xdr_inline_decode(xdr, 4);
4614 if (unlikely(!p)) {
4615 print_overflow_msg(__func__, xdr);
4616 return -EIO;
4617 }
4618 *res = be32_to_cpup(p);
4619 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4620 }
4621 return 0;
4622 }
4623
4624 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4625 {
4626 unsigned int savep;
4627 uint32_t attrlen, bitmap[3];
4628 int status;
4629
4630 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4631 goto xdr_error;
4632 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4633 goto xdr_error;
4634 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4635 goto xdr_error;
4636
4637 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4638
4639 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4640 goto xdr_error;
4641 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4642 goto xdr_error;
4643 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4644 goto xdr_error;
4645 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4646 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4647 goto xdr_error;
4648 fsinfo->wtpref = fsinfo->wtmax;
4649 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4650 if (status != 0)
4651 goto xdr_error;
4652 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4653 if (status != 0)
4654 goto xdr_error;
4655 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4656 if (status)
4657 goto xdr_error;
4658
4659 status = verify_attr_len(xdr, savep, attrlen);
4660 xdr_error:
4661 dprintk("%s: xdr returned %d!\n", __func__, -status);
4662 return status;
4663 }
4664
4665 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4666 {
4667 __be32 *p;
4668 uint32_t len;
4669 int status;
4670
4671 /* Zero handle first to allow comparisons */
4672 memset(fh, 0, sizeof(*fh));
4673
4674 status = decode_op_hdr(xdr, OP_GETFH);
4675 if (status)
4676 return status;
4677
4678 p = xdr_inline_decode(xdr, 4);
4679 if (unlikely(!p))
4680 goto out_overflow;
4681 len = be32_to_cpup(p);
4682 if (len > NFS4_FHSIZE)
4683 return -EIO;
4684 fh->size = len;
4685 p = xdr_inline_decode(xdr, len);
4686 if (unlikely(!p))
4687 goto out_overflow;
4688 memcpy(fh->data, p, len);
4689 return 0;
4690 out_overflow:
4691 print_overflow_msg(__func__, xdr);
4692 return -EIO;
4693 }
4694
4695 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4696 {
4697 int status;
4698
4699 status = decode_op_hdr(xdr, OP_LINK);
4700 if (status)
4701 return status;
4702 return decode_change_info(xdr, cinfo);
4703 }
4704
4705 /*
4706 * We create the owner, so we know a proper owner.id length is 4.
4707 */
4708 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4709 {
4710 uint64_t offset, length, clientid;
4711 __be32 *p;
4712 uint32_t namelen, type;
4713
4714 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4715 if (unlikely(!p))
4716 goto out_overflow;
4717 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4718 p = xdr_decode_hyper(p, &length);
4719 type = be32_to_cpup(p++); /* 4 byte read */
4720 if (fl != NULL) { /* manipulate file lock */
4721 fl->fl_start = (loff_t)offset;
4722 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4723 if (length == ~(uint64_t)0)
4724 fl->fl_end = OFFSET_MAX;
4725 fl->fl_type = F_WRLCK;
4726 if (type & 1)
4727 fl->fl_type = F_RDLCK;
4728 fl->fl_pid = 0;
4729 }
4730 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4731 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4732 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4733 if (likely(p))
4734 return -NFS4ERR_DENIED;
4735 out_overflow:
4736 print_overflow_msg(__func__, xdr);
4737 return -EIO;
4738 }
4739
4740 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4741 {
4742 int status;
4743
4744 status = decode_op_hdr(xdr, OP_LOCK);
4745 if (status == -EIO)
4746 goto out;
4747 if (status == 0) {
4748 status = decode_stateid(xdr, &res->stateid);
4749 if (unlikely(status))
4750 goto out;
4751 } else if (status == -NFS4ERR_DENIED)
4752 status = decode_lock_denied(xdr, NULL);
4753 if (res->open_seqid != NULL)
4754 nfs_increment_open_seqid(status, res->open_seqid);
4755 nfs_increment_lock_seqid(status, res->lock_seqid);
4756 out:
4757 return status;
4758 }
4759
4760 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4761 {
4762 int status;
4763 status = decode_op_hdr(xdr, OP_LOCKT);
4764 if (status == -NFS4ERR_DENIED)
4765 return decode_lock_denied(xdr, res->denied);
4766 return status;
4767 }
4768
4769 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4770 {
4771 int status;
4772
4773 status = decode_op_hdr(xdr, OP_LOCKU);
4774 if (status != -EIO)
4775 nfs_increment_lock_seqid(status, res->seqid);
4776 if (status == 0)
4777 status = decode_stateid(xdr, &res->stateid);
4778 return status;
4779 }
4780
4781 static int decode_release_lockowner(struct xdr_stream *xdr)
4782 {
4783 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4784 }
4785
4786 static int decode_lookup(struct xdr_stream *xdr)
4787 {
4788 return decode_op_hdr(xdr, OP_LOOKUP);
4789 }
4790
4791 /* This is too sick! */
4792 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4793 {
4794 __be32 *p;
4795 uint32_t limit_type, nblocks, blocksize;
4796
4797 p = xdr_inline_decode(xdr, 12);
4798 if (unlikely(!p))
4799 goto out_overflow;
4800 limit_type = be32_to_cpup(p++);
4801 switch (limit_type) {
4802 case 1:
4803 xdr_decode_hyper(p, maxsize);
4804 break;
4805 case 2:
4806 nblocks = be32_to_cpup(p++);
4807 blocksize = be32_to_cpup(p);
4808 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4809 }
4810 return 0;
4811 out_overflow:
4812 print_overflow_msg(__func__, xdr);
4813 return -EIO;
4814 }
4815
4816 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4817 {
4818 __be32 *p;
4819 uint32_t delegation_type;
4820 int status;
4821
4822 p = xdr_inline_decode(xdr, 4);
4823 if (unlikely(!p))
4824 goto out_overflow;
4825 delegation_type = be32_to_cpup(p);
4826 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4827 res->delegation_type = 0;
4828 return 0;
4829 }
4830 status = decode_stateid(xdr, &res->delegation);
4831 if (unlikely(status))
4832 return status;
4833 p = xdr_inline_decode(xdr, 4);
4834 if (unlikely(!p))
4835 goto out_overflow;
4836 res->do_recall = be32_to_cpup(p);
4837
4838 switch (delegation_type) {
4839 case NFS4_OPEN_DELEGATE_READ:
4840 res->delegation_type = FMODE_READ;
4841 break;
4842 case NFS4_OPEN_DELEGATE_WRITE:
4843 res->delegation_type = FMODE_WRITE|FMODE_READ;
4844 if (decode_space_limit(xdr, &res->maxsize) < 0)
4845 return -EIO;
4846 }
4847 return decode_ace(xdr, NULL, res->server->nfs_client);
4848 out_overflow:
4849 print_overflow_msg(__func__, xdr);
4850 return -EIO;
4851 }
4852
4853 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4854 {
4855 __be32 *p;
4856 uint32_t savewords, bmlen, i;
4857 int status;
4858
4859 status = decode_op_hdr(xdr, OP_OPEN);
4860 if (status != -EIO)
4861 nfs_increment_open_seqid(status, res->seqid);
4862 if (!status)
4863 status = decode_stateid(xdr, &res->stateid);
4864 if (unlikely(status))
4865 return status;
4866
4867 decode_change_info(xdr, &res->cinfo);
4868
4869 p = xdr_inline_decode(xdr, 8);
4870 if (unlikely(!p))
4871 goto out_overflow;
4872 res->rflags = be32_to_cpup(p++);
4873 bmlen = be32_to_cpup(p);
4874 if (bmlen > 10)
4875 goto xdr_error;
4876
4877 p = xdr_inline_decode(xdr, bmlen << 2);
4878 if (unlikely(!p))
4879 goto out_overflow;
4880 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4881 for (i = 0; i < savewords; ++i)
4882 res->attrset[i] = be32_to_cpup(p++);
4883 for (; i < NFS4_BITMAP_SIZE; i++)
4884 res->attrset[i] = 0;
4885
4886 return decode_delegation(xdr, res);
4887 xdr_error:
4888 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4889 return -EIO;
4890 out_overflow:
4891 print_overflow_msg(__func__, xdr);
4892 return -EIO;
4893 }
4894
4895 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4896 {
4897 int status;
4898
4899 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4900 if (status != -EIO)
4901 nfs_increment_open_seqid(status, res->seqid);
4902 if (!status)
4903 status = decode_stateid(xdr, &res->stateid);
4904 return status;
4905 }
4906
4907 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4908 {
4909 int status;
4910
4911 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4912 if (status != -EIO)
4913 nfs_increment_open_seqid(status, res->seqid);
4914 if (!status)
4915 status = decode_stateid(xdr, &res->stateid);
4916 return status;
4917 }
4918
4919 static int decode_putfh(struct xdr_stream *xdr)
4920 {
4921 return decode_op_hdr(xdr, OP_PUTFH);
4922 }
4923
4924 static int decode_putrootfh(struct xdr_stream *xdr)
4925 {
4926 return decode_op_hdr(xdr, OP_PUTROOTFH);
4927 }
4928
4929 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4930 {
4931 __be32 *p;
4932 uint32_t count, eof, recvd;
4933 int status;
4934
4935 status = decode_op_hdr(xdr, OP_READ);
4936 if (status)
4937 return status;
4938 p = xdr_inline_decode(xdr, 8);
4939 if (unlikely(!p))
4940 goto out_overflow;
4941 eof = be32_to_cpup(p++);
4942 count = be32_to_cpup(p);
4943 recvd = xdr_read_pages(xdr, count);
4944 if (count > recvd) {
4945 dprintk("NFS: server cheating in read reply: "
4946 "count %u > recvd %u\n", count, recvd);
4947 count = recvd;
4948 eof = 0;
4949 }
4950 res->eof = eof;
4951 res->count = count;
4952 return 0;
4953 out_overflow:
4954 print_overflow_msg(__func__, xdr);
4955 return -EIO;
4956 }
4957
4958 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4959 {
4960 int status;
4961 __be32 verf[2];
4962
4963 status = decode_op_hdr(xdr, OP_READDIR);
4964 if (!status)
4965 status = decode_verifier(xdr, readdir->verifier.data);
4966 if (unlikely(status))
4967 return status;
4968 memcpy(verf, readdir->verifier.data, sizeof(verf));
4969 dprintk("%s: verifier = %08x:%08x\n",
4970 __func__, verf[0], verf[1]);
4971 return xdr_read_pages(xdr, xdr->buf->page_len);
4972 }
4973
4974 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4975 {
4976 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4977 u32 len, recvd;
4978 __be32 *p;
4979 int status;
4980
4981 status = decode_op_hdr(xdr, OP_READLINK);
4982 if (status)
4983 return status;
4984
4985 /* Convert length of symlink */
4986 p = xdr_inline_decode(xdr, 4);
4987 if (unlikely(!p))
4988 goto out_overflow;
4989 len = be32_to_cpup(p);
4990 if (len >= rcvbuf->page_len || len <= 0) {
4991 dprintk("nfs: server returned giant symlink!\n");
4992 return -ENAMETOOLONG;
4993 }
4994 recvd = xdr_read_pages(xdr, len);
4995 if (recvd < len) {
4996 dprintk("NFS: server cheating in readlink reply: "
4997 "count %u > recvd %u\n", len, recvd);
4998 return -EIO;
4999 }
5000 /*
5001 * The XDR encode routine has set things up so that
5002 * the link text will be copied directly into the
5003 * buffer. We just have to do overflow-checking,
5004 * and and null-terminate the text (the VFS expects
5005 * null-termination).
5006 */
5007 xdr_terminate_string(rcvbuf, len);
5008 return 0;
5009 out_overflow:
5010 print_overflow_msg(__func__, xdr);
5011 return -EIO;
5012 }
5013
5014 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5015 {
5016 int status;
5017
5018 status = decode_op_hdr(xdr, OP_REMOVE);
5019 if (status)
5020 goto out;
5021 status = decode_change_info(xdr, cinfo);
5022 out:
5023 return status;
5024 }
5025
5026 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5027 struct nfs4_change_info *new_cinfo)
5028 {
5029 int status;
5030
5031 status = decode_op_hdr(xdr, OP_RENAME);
5032 if (status)
5033 goto out;
5034 if ((status = decode_change_info(xdr, old_cinfo)))
5035 goto out;
5036 status = decode_change_info(xdr, new_cinfo);
5037 out:
5038 return status;
5039 }
5040
5041 static int decode_renew(struct xdr_stream *xdr)
5042 {
5043 return decode_op_hdr(xdr, OP_RENEW);
5044 }
5045
5046 static int
5047 decode_restorefh(struct xdr_stream *xdr)
5048 {
5049 return decode_op_hdr(xdr, OP_RESTOREFH);
5050 }
5051
5052 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5053 struct nfs_getaclres *res)
5054 {
5055 unsigned int savep;
5056 uint32_t attrlen,
5057 bitmap[3] = {0};
5058 int status;
5059 unsigned int pg_offset;
5060
5061 res->acl_len = 0;
5062 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5063 goto out;
5064
5065 xdr_enter_page(xdr, xdr->buf->page_len);
5066
5067 /* Calculate the offset of the page data */
5068 pg_offset = xdr->buf->head[0].iov_len;
5069
5070 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5071 goto out;
5072 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5073 goto out;
5074
5075 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5076 return -EIO;
5077 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5078
5079 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5080 * are stored with the acl data to handle the problem of
5081 * variable length bitmaps.*/
5082 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5083 res->acl_len = attrlen;
5084
5085 /* Check for receive buffer overflow */
5086 if (res->acl_len > (xdr->nwords << 2) ||
5087 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5088 res->acl_flags |= NFS4_ACL_TRUNC;
5089 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5090 attrlen, xdr->nwords << 2);
5091 }
5092 } else
5093 status = -EOPNOTSUPP;
5094
5095 out:
5096 return status;
5097 }
5098
5099 static int
5100 decode_savefh(struct xdr_stream *xdr)
5101 {
5102 return decode_op_hdr(xdr, OP_SAVEFH);
5103 }
5104
5105 static int decode_setattr(struct xdr_stream *xdr)
5106 {
5107 __be32 *p;
5108 uint32_t bmlen;
5109 int status;
5110
5111 status = decode_op_hdr(xdr, OP_SETATTR);
5112 if (status)
5113 return status;
5114 p = xdr_inline_decode(xdr, 4);
5115 if (unlikely(!p))
5116 goto out_overflow;
5117 bmlen = be32_to_cpup(p);
5118 p = xdr_inline_decode(xdr, bmlen << 2);
5119 if (likely(p))
5120 return 0;
5121 out_overflow:
5122 print_overflow_msg(__func__, xdr);
5123 return -EIO;
5124 }
5125
5126 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5127 {
5128 __be32 *p;
5129 uint32_t opnum;
5130 int32_t nfserr;
5131
5132 p = xdr_inline_decode(xdr, 8);
5133 if (unlikely(!p))
5134 goto out_overflow;
5135 opnum = be32_to_cpup(p++);
5136 if (opnum != OP_SETCLIENTID) {
5137 dprintk("nfs: decode_setclientid: Server returned operation"
5138 " %d\n", opnum);
5139 return -EIO;
5140 }
5141 nfserr = be32_to_cpup(p);
5142 if (nfserr == NFS_OK) {
5143 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5144 if (unlikely(!p))
5145 goto out_overflow;
5146 p = xdr_decode_hyper(p, &res->clientid);
5147 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5148 } else if (nfserr == NFSERR_CLID_INUSE) {
5149 uint32_t len;
5150
5151 /* skip netid string */
5152 p = xdr_inline_decode(xdr, 4);
5153 if (unlikely(!p))
5154 goto out_overflow;
5155 len = be32_to_cpup(p);
5156 p = xdr_inline_decode(xdr, len);
5157 if (unlikely(!p))
5158 goto out_overflow;
5159
5160 /* skip uaddr string */
5161 p = xdr_inline_decode(xdr, 4);
5162 if (unlikely(!p))
5163 goto out_overflow;
5164 len = be32_to_cpup(p);
5165 p = xdr_inline_decode(xdr, len);
5166 if (unlikely(!p))
5167 goto out_overflow;
5168 return -NFSERR_CLID_INUSE;
5169 } else
5170 return nfs4_stat_to_errno(nfserr);
5171
5172 return 0;
5173 out_overflow:
5174 print_overflow_msg(__func__, xdr);
5175 return -EIO;
5176 }
5177
5178 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5179 {
5180 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5181 }
5182
5183 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5184 {
5185 __be32 *p;
5186 int status;
5187
5188 status = decode_op_hdr(xdr, OP_WRITE);
5189 if (status)
5190 return status;
5191
5192 p = xdr_inline_decode(xdr, 8);
5193 if (unlikely(!p))
5194 goto out_overflow;
5195 res->count = be32_to_cpup(p++);
5196 res->verf->committed = be32_to_cpup(p++);
5197 return decode_write_verifier(xdr, &res->verf->verifier);
5198 out_overflow:
5199 print_overflow_msg(__func__, xdr);
5200 return -EIO;
5201 }
5202
5203 static int decode_delegreturn(struct xdr_stream *xdr)
5204 {
5205 return decode_op_hdr(xdr, OP_DELEGRETURN);
5206 }
5207
5208 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5209 {
5210 __be32 *p;
5211
5212 p = xdr_inline_decode(xdr, 4);
5213 if (unlikely(!p))
5214 goto out_overflow;
5215 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5216 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5217 goto out_err;
5218
5219 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5220 if (unlikely(!p))
5221 goto out_overflow;
5222 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5223
5224 p = xdr_inline_decode(xdr, 8);
5225 if (unlikely(!p))
5226 goto out_overflow;
5227 flavor->gss.qop4 = be32_to_cpup(p++);
5228 flavor->gss.service = be32_to_cpup(p);
5229
5230 return 0;
5231
5232 out_overflow:
5233 print_overflow_msg(__func__, xdr);
5234 return -EIO;
5235 out_err:
5236 return -EINVAL;
5237 }
5238
5239 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5240 {
5241 struct nfs4_secinfo_flavor *sec_flavor;
5242 int status;
5243 __be32 *p;
5244 int i, num_flavors;
5245
5246 p = xdr_inline_decode(xdr, 4);
5247 if (unlikely(!p))
5248 goto out_overflow;
5249
5250 res->flavors->num_flavors = 0;
5251 num_flavors = be32_to_cpup(p);
5252
5253 for (i = 0; i < num_flavors; i++) {
5254 sec_flavor = &res->flavors->flavors[i];
5255 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5256 break;
5257
5258 p = xdr_inline_decode(xdr, 4);
5259 if (unlikely(!p))
5260 goto out_overflow;
5261 sec_flavor->flavor = be32_to_cpup(p);
5262
5263 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5264 status = decode_secinfo_gss(xdr, sec_flavor);
5265 if (status)
5266 goto out;
5267 }
5268 res->flavors->num_flavors++;
5269 }
5270
5271 status = 0;
5272 out:
5273 return status;
5274 out_overflow:
5275 print_overflow_msg(__func__, xdr);
5276 return -EIO;
5277 }
5278
5279 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5280 {
5281 int status = decode_op_hdr(xdr, OP_SECINFO);
5282 if (status)
5283 return status;
5284 return decode_secinfo_common(xdr, res);
5285 }
5286
5287 #if defined(CONFIG_NFS_V4_1)
5288 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5289 {
5290 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5291 if (status)
5292 return status;
5293 return decode_secinfo_common(xdr, res);
5294 }
5295
5296 static int decode_exchange_id(struct xdr_stream *xdr,
5297 struct nfs41_exchange_id_res *res)
5298 {
5299 __be32 *p;
5300 uint32_t dummy;
5301 char *dummy_str;
5302 int status;
5303 uint32_t impl_id_count;
5304
5305 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5306 if (status)
5307 return status;
5308
5309 p = xdr_inline_decode(xdr, 8);
5310 if (unlikely(!p))
5311 goto out_overflow;
5312 xdr_decode_hyper(p, &res->clientid);
5313 p = xdr_inline_decode(xdr, 12);
5314 if (unlikely(!p))
5315 goto out_overflow;
5316 res->seqid = be32_to_cpup(p++);
5317 res->flags = be32_to_cpup(p++);
5318
5319 /* We ask for SP4_NONE */
5320 dummy = be32_to_cpup(p);
5321 if (dummy != SP4_NONE)
5322 return -EIO;
5323
5324 /* server_owner4.so_minor_id */
5325 p = xdr_inline_decode(xdr, 8);
5326 if (unlikely(!p))
5327 goto out_overflow;
5328 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5329
5330 /* server_owner4.so_major_id */
5331 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5332 if (unlikely(status))
5333 return status;
5334 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5335 return -EIO;
5336 memcpy(res->server_owner->major_id, dummy_str, dummy);
5337 res->server_owner->major_id_sz = dummy;
5338
5339 /* server_scope4 */
5340 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5341 if (unlikely(status))
5342 return status;
5343 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5344 return -EIO;
5345 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5346 res->server_scope->server_scope_sz = dummy;
5347
5348 /* Implementation Id */
5349 p = xdr_inline_decode(xdr, 4);
5350 if (unlikely(!p))
5351 goto out_overflow;
5352 impl_id_count = be32_to_cpup(p++);
5353
5354 if (impl_id_count) {
5355 /* nii_domain */
5356 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5357 if (unlikely(status))
5358 return status;
5359 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5360 return -EIO;
5361 memcpy(res->impl_id->domain, dummy_str, dummy);
5362
5363 /* nii_name */
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->name, dummy_str, dummy);
5370
5371 /* nii_date */
5372 p = xdr_inline_decode(xdr, 12);
5373 if (unlikely(!p))
5374 goto out_overflow;
5375 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5376 res->impl_id->date.nseconds = be32_to_cpup(p);
5377
5378 /* if there's more than one entry, ignore the rest */
5379 }
5380 return 0;
5381 out_overflow:
5382 print_overflow_msg(__func__, xdr);
5383 return -EIO;
5384 }
5385
5386 static int decode_chan_attrs(struct xdr_stream *xdr,
5387 struct nfs4_channel_attrs *attrs)
5388 {
5389 __be32 *p;
5390 u32 nr_attrs, val;
5391
5392 p = xdr_inline_decode(xdr, 28);
5393 if (unlikely(!p))
5394 goto out_overflow;
5395 val = be32_to_cpup(p++); /* headerpadsz */
5396 if (val)
5397 return -EINVAL; /* no support for header padding yet */
5398 attrs->max_rqst_sz = be32_to_cpup(p++);
5399 attrs->max_resp_sz = be32_to_cpup(p++);
5400 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5401 attrs->max_ops = be32_to_cpup(p++);
5402 attrs->max_reqs = be32_to_cpup(p++);
5403 nr_attrs = be32_to_cpup(p);
5404 if (unlikely(nr_attrs > 1)) {
5405 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5406 "count %u\n", __func__, nr_attrs);
5407 return -EINVAL;
5408 }
5409 if (nr_attrs == 1) {
5410 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5411 if (unlikely(!p))
5412 goto out_overflow;
5413 }
5414 return 0;
5415 out_overflow:
5416 print_overflow_msg(__func__, xdr);
5417 return -EIO;
5418 }
5419
5420 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5421 {
5422 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5423 }
5424
5425 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5426 struct nfs41_bind_conn_to_session_res *res)
5427 {
5428 __be32 *p;
5429 int status;
5430
5431 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5432 if (!status)
5433 status = decode_sessionid(xdr, &res->session->sess_id);
5434 if (unlikely(status))
5435 return status;
5436
5437 /* dir flags, rdma mode bool */
5438 p = xdr_inline_decode(xdr, 8);
5439 if (unlikely(!p))
5440 goto out_overflow;
5441
5442 res->dir = be32_to_cpup(p++);
5443 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5444 return -EIO;
5445 if (be32_to_cpup(p) == 0)
5446 res->use_conn_in_rdma_mode = false;
5447 else
5448 res->use_conn_in_rdma_mode = true;
5449
5450 return 0;
5451 out_overflow:
5452 print_overflow_msg(__func__, xdr);
5453 return -EIO;
5454 }
5455
5456 static int decode_create_session(struct xdr_stream *xdr,
5457 struct nfs41_create_session_res *res)
5458 {
5459 __be32 *p;
5460 int status;
5461 struct nfs_client *clp = res->client;
5462 struct nfs4_session *session = clp->cl_session;
5463
5464 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5465 if (!status)
5466 status = decode_sessionid(xdr, &session->sess_id);
5467 if (unlikely(status))
5468 return status;
5469
5470 /* seqid, flags */
5471 p = xdr_inline_decode(xdr, 8);
5472 if (unlikely(!p))
5473 goto out_overflow;
5474 clp->cl_seqid = be32_to_cpup(p++);
5475 session->flags = be32_to_cpup(p);
5476
5477 /* Channel attributes */
5478 status = decode_chan_attrs(xdr, &session->fc_attrs);
5479 if (!status)
5480 status = decode_chan_attrs(xdr, &session->bc_attrs);
5481 return status;
5482 out_overflow:
5483 print_overflow_msg(__func__, xdr);
5484 return -EIO;
5485 }
5486
5487 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5488 {
5489 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5490 }
5491
5492 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5493 {
5494 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5495 }
5496
5497 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5498 {
5499 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5500 }
5501 #endif /* CONFIG_NFS_V4_1 */
5502
5503 static int decode_sequence(struct xdr_stream *xdr,
5504 struct nfs4_sequence_res *res,
5505 struct rpc_rqst *rqstp)
5506 {
5507 #if defined(CONFIG_NFS_V4_1)
5508 struct nfs4_session *session;
5509 struct nfs4_sessionid id;
5510 u32 dummy;
5511 int status;
5512 __be32 *p;
5513
5514 if (res->sr_slot == NULL)
5515 return 0;
5516
5517 status = decode_op_hdr(xdr, OP_SEQUENCE);
5518 if (!status)
5519 status = decode_sessionid(xdr, &id);
5520 if (unlikely(status))
5521 goto out_err;
5522
5523 /*
5524 * If the server returns different values for sessionID, slotID or
5525 * sequence number, the server is looney tunes.
5526 */
5527 status = -EREMOTEIO;
5528 session = res->sr_slot->table->session;
5529
5530 if (memcmp(id.data, session->sess_id.data,
5531 NFS4_MAX_SESSIONID_LEN)) {
5532 dprintk("%s Invalid session id\n", __func__);
5533 goto out_err;
5534 }
5535
5536 p = xdr_inline_decode(xdr, 20);
5537 if (unlikely(!p))
5538 goto out_overflow;
5539
5540 /* seqid */
5541 dummy = be32_to_cpup(p++);
5542 if (dummy != res->sr_slot->seq_nr) {
5543 dprintk("%s Invalid sequence number\n", __func__);
5544 goto out_err;
5545 }
5546 /* slot id */
5547 dummy = be32_to_cpup(p++);
5548 if (dummy != res->sr_slot->slot_nr) {
5549 dprintk("%s Invalid slot id\n", __func__);
5550 goto out_err;
5551 }
5552 /* highest slot id */
5553 res->sr_highest_slotid = be32_to_cpup(p++);
5554 /* target highest slot id */
5555 res->sr_target_highest_slotid = be32_to_cpup(p++);
5556 /* result flags */
5557 res->sr_status_flags = be32_to_cpup(p);
5558 status = 0;
5559 out_err:
5560 res->sr_status = status;
5561 return status;
5562 out_overflow:
5563 print_overflow_msg(__func__, xdr);
5564 status = -EIO;
5565 goto out_err;
5566 #else /* CONFIG_NFS_V4_1 */
5567 return 0;
5568 #endif /* CONFIG_NFS_V4_1 */
5569 }
5570
5571 #if defined(CONFIG_NFS_V4_1)
5572 /*
5573 * TODO: Need to handle case when EOF != true;
5574 */
5575 static int decode_getdevicelist(struct xdr_stream *xdr,
5576 struct pnfs_devicelist *res)
5577 {
5578 __be32 *p;
5579 int status, i;
5580 nfs4_verifier verftemp;
5581
5582 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5583 if (status)
5584 return status;
5585
5586 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5587 if (unlikely(!p))
5588 goto out_overflow;
5589
5590 /* TODO: Skip cookie for now */
5591 p += 2;
5592
5593 /* Read verifier */
5594 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5595
5596 res->num_devs = be32_to_cpup(p);
5597
5598 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5599
5600 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5601 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5602 __func__, res->num_devs);
5603 return -EIO;
5604 }
5605
5606 p = xdr_inline_decode(xdr,
5607 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5608 if (unlikely(!p))
5609 goto out_overflow;
5610 for (i = 0; i < res->num_devs; i++)
5611 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5612 NFS4_DEVICEID4_SIZE);
5613 res->eof = be32_to_cpup(p);
5614 return 0;
5615 out_overflow:
5616 print_overflow_msg(__func__, xdr);
5617 return -EIO;
5618 }
5619
5620 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5621 struct pnfs_device *pdev)
5622 {
5623 __be32 *p;
5624 uint32_t len, type;
5625 int status;
5626
5627 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5628 if (status) {
5629 if (status == -ETOOSMALL) {
5630 p = xdr_inline_decode(xdr, 4);
5631 if (unlikely(!p))
5632 goto out_overflow;
5633 pdev->mincount = be32_to_cpup(p);
5634 dprintk("%s: Min count too small. mincnt = %u\n",
5635 __func__, pdev->mincount);
5636 }
5637 return status;
5638 }
5639
5640 p = xdr_inline_decode(xdr, 8);
5641 if (unlikely(!p))
5642 goto out_overflow;
5643 type = be32_to_cpup(p++);
5644 if (type != pdev->layout_type) {
5645 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5646 __func__, pdev->layout_type, type);
5647 return -EINVAL;
5648 }
5649 /*
5650 * Get the length of the opaque device_addr4. xdr_read_pages places
5651 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5652 * and places the remaining xdr data in xdr_buf->tail
5653 */
5654 pdev->mincount = be32_to_cpup(p);
5655 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5656 goto out_overflow;
5657
5658 /* Parse notification bitmap, verifying that it is zero. */
5659 p = xdr_inline_decode(xdr, 4);
5660 if (unlikely(!p))
5661 goto out_overflow;
5662 len = be32_to_cpup(p);
5663 if (len) {
5664 uint32_t i;
5665
5666 p = xdr_inline_decode(xdr, 4 * len);
5667 if (unlikely(!p))
5668 goto out_overflow;
5669 for (i = 0; i < len; i++, p++) {
5670 if (be32_to_cpup(p)) {
5671 dprintk("%s: notifications not supported\n",
5672 __func__);
5673 return -EIO;
5674 }
5675 }
5676 }
5677 return 0;
5678 out_overflow:
5679 print_overflow_msg(__func__, xdr);
5680 return -EIO;
5681 }
5682
5683 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5684 struct nfs4_layoutget_res *res)
5685 {
5686 __be32 *p;
5687 int status;
5688 u32 layout_count;
5689 u32 recvd;
5690
5691 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5692 if (status)
5693 return status;
5694 p = xdr_inline_decode(xdr, 4);
5695 if (unlikely(!p))
5696 goto out_overflow;
5697 res->return_on_close = be32_to_cpup(p);
5698 decode_stateid(xdr, &res->stateid);
5699 p = xdr_inline_decode(xdr, 4);
5700 if (unlikely(!p))
5701 goto out_overflow;
5702 layout_count = be32_to_cpup(p);
5703 if (!layout_count) {
5704 dprintk("%s: server responded with empty layout array\n",
5705 __func__);
5706 return -EINVAL;
5707 }
5708
5709 p = xdr_inline_decode(xdr, 28);
5710 if (unlikely(!p))
5711 goto out_overflow;
5712 p = xdr_decode_hyper(p, &res->range.offset);
5713 p = xdr_decode_hyper(p, &res->range.length);
5714 res->range.iomode = be32_to_cpup(p++);
5715 res->type = be32_to_cpup(p++);
5716 res->layoutp->len = be32_to_cpup(p);
5717
5718 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5719 __func__,
5720 (unsigned long)res->range.offset,
5721 (unsigned long)res->range.length,
5722 res->range.iomode,
5723 res->type,
5724 res->layoutp->len);
5725
5726 recvd = xdr_read_pages(xdr, res->layoutp->len);
5727 if (res->layoutp->len > recvd) {
5728 dprintk("NFS: server cheating in layoutget reply: "
5729 "layout len %u > recvd %u\n",
5730 res->layoutp->len, recvd);
5731 return -EINVAL;
5732 }
5733
5734 if (layout_count > 1) {
5735 /* We only handle a length one array at the moment. Any
5736 * further entries are just ignored. Note that this means
5737 * the client may see a response that is less than the
5738 * minimum it requested.
5739 */
5740 dprintk("%s: server responded with %d layouts, dropping tail\n",
5741 __func__, layout_count);
5742 }
5743
5744 return 0;
5745 out_overflow:
5746 print_overflow_msg(__func__, xdr);
5747 return -EIO;
5748 }
5749
5750 static int decode_layoutreturn(struct xdr_stream *xdr,
5751 struct nfs4_layoutreturn_res *res)
5752 {
5753 __be32 *p;
5754 int status;
5755
5756 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5757 if (status)
5758 return status;
5759 p = xdr_inline_decode(xdr, 4);
5760 if (unlikely(!p))
5761 goto out_overflow;
5762 res->lrs_present = be32_to_cpup(p);
5763 if (res->lrs_present)
5764 status = decode_stateid(xdr, &res->stateid);
5765 return status;
5766 out_overflow:
5767 print_overflow_msg(__func__, xdr);
5768 return -EIO;
5769 }
5770
5771 static int decode_layoutcommit(struct xdr_stream *xdr,
5772 struct rpc_rqst *req,
5773 struct nfs4_layoutcommit_res *res)
5774 {
5775 __be32 *p;
5776 __u32 sizechanged;
5777 int status;
5778
5779 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5780 res->status = status;
5781 if (status)
5782 return status;
5783
5784 p = xdr_inline_decode(xdr, 4);
5785 if (unlikely(!p))
5786 goto out_overflow;
5787 sizechanged = be32_to_cpup(p);
5788
5789 if (sizechanged) {
5790 /* throw away new size */
5791 p = xdr_inline_decode(xdr, 8);
5792 if (unlikely(!p))
5793 goto out_overflow;
5794 }
5795 return 0;
5796 out_overflow:
5797 print_overflow_msg(__func__, xdr);
5798 return -EIO;
5799 }
5800
5801 static int decode_test_stateid(struct xdr_stream *xdr,
5802 struct nfs41_test_stateid_res *res)
5803 {
5804 __be32 *p;
5805 int status;
5806 int num_res;
5807
5808 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5809 if (status)
5810 return status;
5811
5812 p = xdr_inline_decode(xdr, 4);
5813 if (unlikely(!p))
5814 goto out_overflow;
5815 num_res = be32_to_cpup(p++);
5816 if (num_res != 1)
5817 goto out;
5818
5819 p = xdr_inline_decode(xdr, 4);
5820 if (unlikely(!p))
5821 goto out_overflow;
5822 res->status = be32_to_cpup(p++);
5823
5824 return status;
5825 out_overflow:
5826 print_overflow_msg(__func__, xdr);
5827 out:
5828 return -EIO;
5829 }
5830
5831 static int decode_free_stateid(struct xdr_stream *xdr,
5832 struct nfs41_free_stateid_res *res)
5833 {
5834 __be32 *p;
5835 int status;
5836
5837 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5838 if (status)
5839 return status;
5840
5841 p = xdr_inline_decode(xdr, 4);
5842 if (unlikely(!p))
5843 goto out_overflow;
5844 res->status = be32_to_cpup(p++);
5845 return res->status;
5846 out_overflow:
5847 print_overflow_msg(__func__, xdr);
5848 return -EIO;
5849 }
5850 #endif /* CONFIG_NFS_V4_1 */
5851
5852 /*
5853 * END OF "GENERIC" DECODE ROUTINES.
5854 */
5855
5856 /*
5857 * Decode OPEN_DOWNGRADE response
5858 */
5859 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5860 struct xdr_stream *xdr,
5861 struct nfs_closeres *res)
5862 {
5863 struct compound_hdr hdr;
5864 int status;
5865
5866 status = decode_compound_hdr(xdr, &hdr);
5867 if (status)
5868 goto out;
5869 status = decode_sequence(xdr, &res->seq_res, rqstp);
5870 if (status)
5871 goto out;
5872 status = decode_putfh(xdr);
5873 if (status)
5874 goto out;
5875 status = decode_open_downgrade(xdr, res);
5876 if (status != 0)
5877 goto out;
5878 decode_getfattr(xdr, res->fattr, res->server);
5879 out:
5880 return status;
5881 }
5882
5883 /*
5884 * Decode ACCESS response
5885 */
5886 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5887 struct nfs4_accessres *res)
5888 {
5889 struct compound_hdr hdr;
5890 int status;
5891
5892 status = decode_compound_hdr(xdr, &hdr);
5893 if (status)
5894 goto out;
5895 status = decode_sequence(xdr, &res->seq_res, rqstp);
5896 if (status)
5897 goto out;
5898 status = decode_putfh(xdr);
5899 if (status != 0)
5900 goto out;
5901 status = decode_access(xdr, &res->supported, &res->access);
5902 if (status != 0)
5903 goto out;
5904 decode_getfattr(xdr, res->fattr, res->server);
5905 out:
5906 return status;
5907 }
5908
5909 /*
5910 * Decode LOOKUP response
5911 */
5912 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5913 struct nfs4_lookup_res *res)
5914 {
5915 struct compound_hdr hdr;
5916 int status;
5917
5918 status = decode_compound_hdr(xdr, &hdr);
5919 if (status)
5920 goto out;
5921 status = decode_sequence(xdr, &res->seq_res, rqstp);
5922 if (status)
5923 goto out;
5924 status = decode_putfh(xdr);
5925 if (status)
5926 goto out;
5927 status = decode_lookup(xdr);
5928 if (status)
5929 goto out;
5930 status = decode_getfh(xdr, res->fh);
5931 if (status)
5932 goto out;
5933 status = decode_getfattr(xdr, res->fattr, res->server);
5934 out:
5935 return status;
5936 }
5937
5938 /*
5939 * Decode LOOKUP_ROOT response
5940 */
5941 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5942 struct xdr_stream *xdr,
5943 struct nfs4_lookup_res *res)
5944 {
5945 struct compound_hdr hdr;
5946 int status;
5947
5948 status = decode_compound_hdr(xdr, &hdr);
5949 if (status)
5950 goto out;
5951 status = decode_sequence(xdr, &res->seq_res, rqstp);
5952 if (status)
5953 goto out;
5954 status = decode_putrootfh(xdr);
5955 if (status)
5956 goto out;
5957 status = decode_getfh(xdr, res->fh);
5958 if (status == 0)
5959 status = decode_getfattr(xdr, res->fattr, res->server);
5960 out:
5961 return status;
5962 }
5963
5964 /*
5965 * Decode REMOVE response
5966 */
5967 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5968 struct nfs_removeres *res)
5969 {
5970 struct compound_hdr hdr;
5971 int status;
5972
5973 status = decode_compound_hdr(xdr, &hdr);
5974 if (status)
5975 goto out;
5976 status = decode_sequence(xdr, &res->seq_res, rqstp);
5977 if (status)
5978 goto out;
5979 status = decode_putfh(xdr);
5980 if (status)
5981 goto out;
5982 status = decode_remove(xdr, &res->cinfo);
5983 out:
5984 return status;
5985 }
5986
5987 /*
5988 * Decode RENAME response
5989 */
5990 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5991 struct nfs_renameres *res)
5992 {
5993 struct compound_hdr hdr;
5994 int status;
5995
5996 status = decode_compound_hdr(xdr, &hdr);
5997 if (status)
5998 goto out;
5999 status = decode_sequence(xdr, &res->seq_res, rqstp);
6000 if (status)
6001 goto out;
6002 status = decode_putfh(xdr);
6003 if (status)
6004 goto out;
6005 status = decode_savefh(xdr);
6006 if (status)
6007 goto out;
6008 status = decode_putfh(xdr);
6009 if (status)
6010 goto out;
6011 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6012 out:
6013 return status;
6014 }
6015
6016 /*
6017 * Decode LINK response
6018 */
6019 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6020 struct nfs4_link_res *res)
6021 {
6022 struct compound_hdr hdr;
6023 int status;
6024
6025 status = decode_compound_hdr(xdr, &hdr);
6026 if (status)
6027 goto out;
6028 status = decode_sequence(xdr, &res->seq_res, rqstp);
6029 if (status)
6030 goto out;
6031 status = decode_putfh(xdr);
6032 if (status)
6033 goto out;
6034 status = decode_savefh(xdr);
6035 if (status)
6036 goto out;
6037 status = decode_putfh(xdr);
6038 if (status)
6039 goto out;
6040 status = decode_link(xdr, &res->cinfo);
6041 if (status)
6042 goto out;
6043 /*
6044 * Note order: OP_LINK leaves the directory as the current
6045 * filehandle.
6046 */
6047 status = decode_restorefh(xdr);
6048 if (status)
6049 goto out;
6050 decode_getfattr(xdr, res->fattr, res->server);
6051 out:
6052 return status;
6053 }
6054
6055 /*
6056 * Decode CREATE response
6057 */
6058 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6059 struct nfs4_create_res *res)
6060 {
6061 struct compound_hdr hdr;
6062 int status;
6063
6064 status = decode_compound_hdr(xdr, &hdr);
6065 if (status)
6066 goto out;
6067 status = decode_sequence(xdr, &res->seq_res, rqstp);
6068 if (status)
6069 goto out;
6070 status = decode_putfh(xdr);
6071 if (status)
6072 goto out;
6073 status = decode_create(xdr, &res->dir_cinfo);
6074 if (status)
6075 goto out;
6076 status = decode_getfh(xdr, res->fh);
6077 if (status)
6078 goto out;
6079 decode_getfattr(xdr, res->fattr, res->server);
6080 out:
6081 return status;
6082 }
6083
6084 /*
6085 * Decode SYMLINK response
6086 */
6087 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6088 struct nfs4_create_res *res)
6089 {
6090 return nfs4_xdr_dec_create(rqstp, xdr, res);
6091 }
6092
6093 /*
6094 * Decode GETATTR response
6095 */
6096 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6097 struct nfs4_getattr_res *res)
6098 {
6099 struct compound_hdr hdr;
6100 int status;
6101
6102 status = decode_compound_hdr(xdr, &hdr);
6103 if (status)
6104 goto out;
6105 status = decode_sequence(xdr, &res->seq_res, rqstp);
6106 if (status)
6107 goto out;
6108 status = decode_putfh(xdr);
6109 if (status)
6110 goto out;
6111 status = decode_getfattr(xdr, res->fattr, res->server);
6112 out:
6113 return status;
6114 }
6115
6116 /*
6117 * Encode an SETACL request
6118 */
6119 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6120 struct nfs_setaclargs *args)
6121 {
6122 struct compound_hdr hdr = {
6123 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6124 };
6125
6126 encode_compound_hdr(xdr, req, &hdr);
6127 encode_sequence(xdr, &args->seq_args, &hdr);
6128 encode_putfh(xdr, args->fh, &hdr);
6129 encode_setacl(xdr, args, &hdr);
6130 encode_nops(&hdr);
6131 }
6132
6133 /*
6134 * Decode SETACL response
6135 */
6136 static int
6137 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6138 struct nfs_setaclres *res)
6139 {
6140 struct compound_hdr hdr;
6141 int status;
6142
6143 status = decode_compound_hdr(xdr, &hdr);
6144 if (status)
6145 goto out;
6146 status = decode_sequence(xdr, &res->seq_res, rqstp);
6147 if (status)
6148 goto out;
6149 status = decode_putfh(xdr);
6150 if (status)
6151 goto out;
6152 status = decode_setattr(xdr);
6153 out:
6154 return status;
6155 }
6156
6157 /*
6158 * Decode GETACL response
6159 */
6160 static int
6161 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6162 struct nfs_getaclres *res)
6163 {
6164 struct compound_hdr hdr;
6165 int status;
6166
6167 if (res->acl_scratch != NULL) {
6168 void *p = page_address(res->acl_scratch);
6169 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6170 }
6171 status = decode_compound_hdr(xdr, &hdr);
6172 if (status)
6173 goto out;
6174 status = decode_sequence(xdr, &res->seq_res, rqstp);
6175 if (status)
6176 goto out;
6177 status = decode_putfh(xdr);
6178 if (status)
6179 goto out;
6180 status = decode_getacl(xdr, rqstp, res);
6181
6182 out:
6183 return status;
6184 }
6185
6186 /*
6187 * Decode CLOSE response
6188 */
6189 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6190 struct nfs_closeres *res)
6191 {
6192 struct compound_hdr hdr;
6193 int status;
6194
6195 status = decode_compound_hdr(xdr, &hdr);
6196 if (status)
6197 goto out;
6198 status = decode_sequence(xdr, &res->seq_res, rqstp);
6199 if (status)
6200 goto out;
6201 status = decode_putfh(xdr);
6202 if (status)
6203 goto out;
6204 status = decode_close(xdr, res);
6205 if (status != 0)
6206 goto out;
6207 /*
6208 * Note: Server may do delete on close for this file
6209 * in which case the getattr call will fail with
6210 * an ESTALE error. Shouldn't be a problem,
6211 * though, since fattr->valid will remain unset.
6212 */
6213 decode_getfattr(xdr, res->fattr, res->server);
6214 out:
6215 return status;
6216 }
6217
6218 /*
6219 * Decode OPEN response
6220 */
6221 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6222 struct nfs_openres *res)
6223 {
6224 struct compound_hdr hdr;
6225 int status;
6226
6227 status = decode_compound_hdr(xdr, &hdr);
6228 if (status)
6229 goto out;
6230 status = decode_sequence(xdr, &res->seq_res, rqstp);
6231 if (status)
6232 goto out;
6233 status = decode_putfh(xdr);
6234 if (status)
6235 goto out;
6236 status = decode_open(xdr, res);
6237 if (status)
6238 goto out;
6239 status = decode_getfh(xdr, &res->fh);
6240 if (status)
6241 goto out;
6242 if (res->access_request)
6243 decode_access(xdr, &res->access_supported, &res->access_result);
6244 decode_getfattr(xdr, res->f_attr, res->server);
6245 out:
6246 return status;
6247 }
6248
6249 /*
6250 * Decode OPEN_CONFIRM response
6251 */
6252 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6253 struct xdr_stream *xdr,
6254 struct nfs_open_confirmres *res)
6255 {
6256 struct compound_hdr hdr;
6257 int status;
6258
6259 status = decode_compound_hdr(xdr, &hdr);
6260 if (status)
6261 goto out;
6262 status = decode_putfh(xdr);
6263 if (status)
6264 goto out;
6265 status = decode_open_confirm(xdr, res);
6266 out:
6267 return status;
6268 }
6269
6270 /*
6271 * Decode OPEN response
6272 */
6273 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6274 struct xdr_stream *xdr,
6275 struct nfs_openres *res)
6276 {
6277 struct compound_hdr hdr;
6278 int status;
6279
6280 status = decode_compound_hdr(xdr, &hdr);
6281 if (status)
6282 goto out;
6283 status = decode_sequence(xdr, &res->seq_res, rqstp);
6284 if (status)
6285 goto out;
6286 status = decode_putfh(xdr);
6287 if (status)
6288 goto out;
6289 status = decode_open(xdr, res);
6290 if (status)
6291 goto out;
6292 if (res->access_request)
6293 decode_access(xdr, &res->access_supported, &res->access_result);
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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