projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
time: Fix timeekeping_get_ns overflow on 32bit systems
[deliverable/linux.git] / fs / nfs / nfs4xdr.c
1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/in.h>
44 #include <linux/pagemap.h>
45 #include <linux/proc_fs.h>
46 #include <linux/kdev_t.h>
47 #include <linux/module.h>
48 #include <linux/utsname.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/sunrpc/msg_prot.h>
51 #include <linux/sunrpc/gss_api.h>
52 #include <linux/nfs.h>
53 #include <linux/nfs4.h>
54 #include <linux/nfs_fs.h>
55 #include <linux/nfs_idmap.h>
56
57 #include "nfs4_fs.h"
58 #include "internal.h"
59 #include "pnfs.h"
60 #include "netns.h"
61
62 #define NFSDBG_FACILITY NFSDBG_XDR
63
64 /* Mapping from NFS error code to "errno" error code. */
65 #define errno_NFSERR_IO EIO
66
67 static int nfs4_stat_to_errno(int);
68
69 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
70 #ifdef DEBUG
71 #define NFS4_MAXTAGLEN 20
72 #else
73 #define NFS4_MAXTAGLEN 0
74 #endif
75
76 /* lock,open owner id:
77 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
78 */
79 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
80 #define lock_owner_id_maxsz (1 + 1 + 4)
81 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
82 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
83 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84 #define op_encode_hdr_maxsz (1)
85 #define op_decode_hdr_maxsz (2)
86 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
87 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
89 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
91 (NFS4_FHSIZE >> 2))
92 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
93 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
94 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
95 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
96 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
97 ((3+NFS4_FHSIZE) >> 2))
98 #define nfs4_fattr_bitmap_maxsz 4
99 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
100 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
101 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
102 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
103 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104 /* We support only one layout type per file system */
105 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
106 /* This is based on getfattr, which uses the most attributes: */
107 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
108 3 + 3 + 3 + nfs4_owner_maxsz + \
109 nfs4_group_maxsz + decode_mdsthreshold_maxsz))
110 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
111 nfs4_fattr_value_maxsz)
112 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
113 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
114 1 + 2 + 1 + \
115 nfs4_owner_maxsz + \
116 nfs4_group_maxsz + \
117 4 + 4)
118 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
119 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
120 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
121 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
122 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
123 /* The 5 accounts for the PNFS attributes, and assumes that at most three
124 * layout types will be returned.
125 */
126 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
127 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
128 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
129 #define decode_renew_maxsz (op_decode_hdr_maxsz)
130 #define encode_setclientid_maxsz \
131 (op_encode_hdr_maxsz + \
132 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
133 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
134 1 /* sc_prog */ + \
135 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
136 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
137 1) /* sc_cb_ident */
138 #define decode_setclientid_maxsz \
139 (op_decode_hdr_maxsz + \
140 2 + \
141 1024) /* large value for CLID_INUSE */
142 #define encode_setclientid_confirm_maxsz \
143 (op_encode_hdr_maxsz + \
144 3 + (NFS4_VERIFIER_SIZE >> 2))
145 #define decode_setclientid_confirm_maxsz \
146 (op_decode_hdr_maxsz)
147 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
148 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
149 #define encode_share_access_maxsz \
150 (2)
151 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
152 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
153 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
154 #define encode_open_maxsz (op_encode_hdr_maxsz + \
155 2 + encode_share_access_maxsz + 2 + \
156 open_owner_id_maxsz + \
157 encode_opentype_maxsz + \
158 encode_claim_null_maxsz)
159 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
160 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
161 decode_ace_maxsz)
162 #define decode_change_info_maxsz (5)
163 #define decode_open_maxsz (op_decode_hdr_maxsz + \
164 decode_stateid_maxsz + \
165 decode_change_info_maxsz + 1 + \
166 nfs4_fattr_bitmap_maxsz + \
167 decode_delegation_maxsz)
168 #define encode_open_confirm_maxsz \
169 (op_encode_hdr_maxsz + \
170 encode_stateid_maxsz + 1)
171 #define decode_open_confirm_maxsz \
172 (op_decode_hdr_maxsz + \
173 decode_stateid_maxsz)
174 #define encode_open_downgrade_maxsz \
175 (op_encode_hdr_maxsz + \
176 encode_stateid_maxsz + 1 + \
177 encode_share_access_maxsz)
178 #define decode_open_downgrade_maxsz \
179 (op_decode_hdr_maxsz + \
180 decode_stateid_maxsz)
181 #define encode_close_maxsz (op_encode_hdr_maxsz + \
182 1 + encode_stateid_maxsz)
183 #define decode_close_maxsz (op_decode_hdr_maxsz + \
184 decode_stateid_maxsz)
185 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
186 encode_stateid_maxsz + \
187 encode_attrs_maxsz)
188 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
189 nfs4_fattr_bitmap_maxsz)
190 #define encode_read_maxsz (op_encode_hdr_maxsz + \
191 encode_stateid_maxsz + 3)
192 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
193 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
194 2 + encode_verifier_maxsz + 5)
195 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
196 decode_verifier_maxsz)
197 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
198 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
199 #define encode_write_maxsz (op_encode_hdr_maxsz + \
200 encode_stateid_maxsz + 4)
201 #define decode_write_maxsz (op_decode_hdr_maxsz + \
202 2 + decode_verifier_maxsz)
203 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
204 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
205 decode_verifier_maxsz)
206 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
207 nfs4_name_maxsz)
208 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
209 decode_change_info_maxsz)
210 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
211 2 * nfs4_name_maxsz)
212 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
213 decode_change_info_maxsz + \
214 decode_change_info_maxsz)
215 #define encode_link_maxsz (op_encode_hdr_maxsz + \
216 nfs4_name_maxsz)
217 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
218 #define encode_lockowner_maxsz (7)
219 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
220 7 + \
221 1 + encode_stateid_maxsz + 1 + \
222 encode_lockowner_maxsz)
223 #define decode_lock_denied_maxsz \
224 (8 + decode_lockowner_maxsz)
225 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
226 decode_lock_denied_maxsz)
227 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
228 encode_lockowner_maxsz)
229 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
230 decode_lock_denied_maxsz)
231 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
232 encode_stateid_maxsz + \
233 4)
234 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
235 decode_stateid_maxsz)
236 #define encode_release_lockowner_maxsz \
237 (op_encode_hdr_maxsz + \
238 encode_lockowner_maxsz)
239 #define decode_release_lockowner_maxsz \
240 (op_decode_hdr_maxsz)
241 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
242 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
243 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
244 1 + nfs4_name_maxsz + \
245 1 + \
246 nfs4_fattr_maxsz)
247 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
248 #define encode_create_maxsz (op_encode_hdr_maxsz + \
249 1 + 2 + nfs4_name_maxsz + \
250 encode_attrs_maxsz)
251 #define decode_create_maxsz (op_decode_hdr_maxsz + \
252 decode_change_info_maxsz + \
253 nfs4_fattr_bitmap_maxsz)
254 #define encode_statfs_maxsz (encode_getattr_maxsz)
255 #define decode_statfs_maxsz (decode_getattr_maxsz)
256 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
257 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
258 #define encode_getacl_maxsz (encode_getattr_maxsz)
259 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
260 nfs4_fattr_bitmap_maxsz + 1)
261 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
262 encode_stateid_maxsz + 3)
263 #define decode_setacl_maxsz (decode_setattr_maxsz)
264 #define encode_fs_locations_maxsz \
265 (encode_getattr_maxsz)
266 #define decode_fs_locations_maxsz \
267 (0)
268 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
269 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
270
271 #if defined(CONFIG_NFS_V4_1)
272 #define NFS4_MAX_MACHINE_NAME_LEN (64)
273
274 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
275 encode_verifier_maxsz + \
276 1 /* co_ownerid.len */ + \
277 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
278 1 /* flags */ + \
279 1 /* spa_how */ + \
280 0 /* SP4_NONE (for now) */ + \
281 1 /* implementation id array of size 1 */ + \
282 1 /* nii_domain */ + \
283 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
284 1 /* nii_name */ + \
285 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
286 3 /* nii_date */)
287 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
288 2 /* eir_clientid */ + \
289 1 /* eir_sequenceid */ + \
290 1 /* eir_flags */ + \
291 1 /* spr_how */ + \
292 0 /* SP4_NONE (for now) */ + \
293 2 /* eir_server_owner.so_minor_id */ + \
294 /* eir_server_owner.so_major_id<> */ \
295 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
296 /* eir_server_scope<> */ \
297 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
298 1 /* eir_server_impl_id array length */ + \
299 1 /* nii_domain */ + \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
301 1 /* nii_name */ + \
302 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
303 3 /* nii_date */)
304 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
305 #define decode_channel_attrs_maxsz (6 + \
306 1 /* ca_rdma_ird.len */ + \
307 1 /* ca_rdma_ird */)
308 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
309 2 /* csa_clientid */ + \
310 1 /* csa_sequence */ + \
311 1 /* csa_flags */ + \
312 encode_channel_attrs_maxsz + \
313 encode_channel_attrs_maxsz + \
314 1 /* csa_cb_program */ + \
315 1 /* csa_sec_parms.len (1) */ + \
316 1 /* cb_secflavor (AUTH_SYS) */ + \
317 1 /* stamp */ + \
318 1 /* machinename.len */ + \
319 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
320 1 /* uid */ + \
321 1 /* gid */ + \
322 1 /* gids.len (0) */)
323 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
324 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
325 1 /* csr_sequence */ + \
326 1 /* csr_flags */ + \
327 decode_channel_attrs_maxsz + \
328 decode_channel_attrs_maxsz)
329 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
330 /* bctsa_sessid */ \
331 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
332 1 /* bctsa_dir */ + \
333 1 /* bctsa_use_conn_in_rdma_mode */)
334 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
335 /* bctsr_sessid */ \
336 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
337 1 /* bctsr_dir */ + \
338 1 /* bctsr_use_conn_in_rdma_mode */)
339 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
340 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
341 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
342 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
343 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
344 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
345 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
346 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
347 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
348 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
349 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
350 encode_verifier_maxsz)
351 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
352 2 /* nfs_cookie4 gdlr_cookie */ + \
353 decode_verifier_maxsz \
354 /* verifier4 gdlr_verifier */ + \
355 1 /* gdlr_deviceid_list count */ + \
356 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
357 NFS4_DEVICEID4_SIZE) \
358 /* gdlr_deviceid_list */ + \
359 1 /* bool gdlr_eof */)
360 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
361 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
362 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
363 1 /* layout type */ + \
364 1 /* opaque devaddr4 length */ + \
365 /* devaddr4 payload is read into page */ \
366 1 /* notification bitmap length */ + \
367 1 /* notification bitmap */)
368 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
369 encode_stateid_maxsz)
370 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
371 decode_stateid_maxsz + \
372 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
373 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
374 2 /* offset */ + \
375 2 /* length */ + \
376 1 /* reclaim */ + \
377 encode_stateid_maxsz + \
378 1 /* new offset (true) */ + \
379 2 /* last byte written */ + \
380 1 /* nt_timechanged (false) */ + \
381 1 /* layoutupdate4 layout type */ + \
382 1 /* NULL filelayout layoutupdate4 payload */)
383 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
384 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
385 encode_stateid_maxsz + \
386 1 /* FIXME: opaque lrf_body always empty at the moment */)
387 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
388 1 + decode_stateid_maxsz)
389 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
390 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
391 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
392 XDR_QUADLEN(NFS4_STATEID_SIZE))
393 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
394 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
395 XDR_QUADLEN(NFS4_STATEID_SIZE))
396 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
397 #else /* CONFIG_NFS_V4_1 */
398 #define encode_sequence_maxsz 0
399 #define decode_sequence_maxsz 0
400 #endif /* CONFIG_NFS_V4_1 */
401
402 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
403 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
404 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
405 encode_sequence_maxsz + \
406 encode_putfh_maxsz + \
407 encode_read_maxsz)
408 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
409 decode_sequence_maxsz + \
410 decode_putfh_maxsz + \
411 decode_read_maxsz)
412 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
413 encode_sequence_maxsz + \
414 encode_putfh_maxsz + \
415 encode_readlink_maxsz)
416 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
417 decode_sequence_maxsz + \
418 decode_putfh_maxsz + \
419 decode_readlink_maxsz)
420 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
421 encode_sequence_maxsz + \
422 encode_putfh_maxsz + \
423 encode_readdir_maxsz)
424 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
425 decode_sequence_maxsz + \
426 decode_putfh_maxsz + \
427 decode_readdir_maxsz)
428 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
429 encode_sequence_maxsz + \
430 encode_putfh_maxsz + \
431 encode_write_maxsz + \
432 encode_getattr_maxsz)
433 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
434 decode_sequence_maxsz + \
435 decode_putfh_maxsz + \
436 decode_write_maxsz + \
437 decode_getattr_maxsz)
438 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
439 encode_sequence_maxsz + \
440 encode_putfh_maxsz + \
441 encode_commit_maxsz)
442 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
443 decode_sequence_maxsz + \
444 decode_putfh_maxsz + \
445 decode_commit_maxsz)
446 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
447 encode_sequence_maxsz + \
448 encode_putfh_maxsz + \
449 encode_open_maxsz + \
450 encode_getfh_maxsz + \
451 encode_getattr_maxsz)
452 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
453 decode_sequence_maxsz + \
454 decode_putfh_maxsz + \
455 decode_open_maxsz + \
456 decode_getfh_maxsz + \
457 decode_getattr_maxsz)
458 #define NFS4_enc_open_confirm_sz \
459 (compound_encode_hdr_maxsz + \
460 encode_putfh_maxsz + \
461 encode_open_confirm_maxsz)
462 #define NFS4_dec_open_confirm_sz \
463 (compound_decode_hdr_maxsz + \
464 decode_putfh_maxsz + \
465 decode_open_confirm_maxsz)
466 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
467 encode_sequence_maxsz + \
468 encode_putfh_maxsz + \
469 encode_open_maxsz + \
470 encode_getattr_maxsz)
471 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
472 decode_sequence_maxsz + \
473 decode_putfh_maxsz + \
474 decode_open_maxsz + \
475 decode_getattr_maxsz)
476 #define NFS4_enc_open_downgrade_sz \
477 (compound_encode_hdr_maxsz + \
478 encode_sequence_maxsz + \
479 encode_putfh_maxsz + \
480 encode_open_downgrade_maxsz + \
481 encode_getattr_maxsz)
482 #define NFS4_dec_open_downgrade_sz \
483 (compound_decode_hdr_maxsz + \
484 decode_sequence_maxsz + \
485 decode_putfh_maxsz + \
486 decode_open_downgrade_maxsz + \
487 decode_getattr_maxsz)
488 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
489 encode_sequence_maxsz + \
490 encode_putfh_maxsz + \
491 encode_close_maxsz + \
492 encode_getattr_maxsz)
493 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
494 decode_sequence_maxsz + \
495 decode_putfh_maxsz + \
496 decode_close_maxsz + \
497 decode_getattr_maxsz)
498 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
499 encode_sequence_maxsz + \
500 encode_putfh_maxsz + \
501 encode_setattr_maxsz + \
502 encode_getattr_maxsz)
503 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_setattr_maxsz + \
507 decode_getattr_maxsz)
508 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
509 encode_sequence_maxsz + \
510 encode_putfh_maxsz + \
511 encode_fsinfo_maxsz)
512 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
513 decode_sequence_maxsz + \
514 decode_putfh_maxsz + \
515 decode_fsinfo_maxsz)
516 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
517 encode_renew_maxsz)
518 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
519 decode_renew_maxsz)
520 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
521 encode_setclientid_maxsz)
522 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
523 decode_setclientid_maxsz)
524 #define NFS4_enc_setclientid_confirm_sz \
525 (compound_encode_hdr_maxsz + \
526 encode_setclientid_confirm_maxsz + \
527 encode_putrootfh_maxsz + \
528 encode_fsinfo_maxsz)
529 #define NFS4_dec_setclientid_confirm_sz \
530 (compound_decode_hdr_maxsz + \
531 decode_setclientid_confirm_maxsz + \
532 decode_putrootfh_maxsz + \
533 decode_fsinfo_maxsz)
534 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
535 encode_sequence_maxsz + \
536 encode_putfh_maxsz + \
537 encode_lock_maxsz)
538 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
539 decode_sequence_maxsz + \
540 decode_putfh_maxsz + \
541 decode_lock_maxsz)
542 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
543 encode_sequence_maxsz + \
544 encode_putfh_maxsz + \
545 encode_lockt_maxsz)
546 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
547 decode_sequence_maxsz + \
548 decode_putfh_maxsz + \
549 decode_lockt_maxsz)
550 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
551 encode_sequence_maxsz + \
552 encode_putfh_maxsz + \
553 encode_locku_maxsz)
554 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
555 decode_sequence_maxsz + \
556 decode_putfh_maxsz + \
557 decode_locku_maxsz)
558 #define NFS4_enc_release_lockowner_sz \
559 (compound_encode_hdr_maxsz + \
560 encode_lockowner_maxsz)
561 #define NFS4_dec_release_lockowner_sz \
562 (compound_decode_hdr_maxsz + \
563 decode_lockowner_maxsz)
564 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
565 encode_sequence_maxsz + \
566 encode_putfh_maxsz + \
567 encode_access_maxsz + \
568 encode_getattr_maxsz)
569 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
570 decode_sequence_maxsz + \
571 decode_putfh_maxsz + \
572 decode_access_maxsz + \
573 decode_getattr_maxsz)
574 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
575 encode_sequence_maxsz + \
576 encode_putfh_maxsz + \
577 encode_getattr_maxsz)
578 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
579 decode_sequence_maxsz + \
580 decode_putfh_maxsz + \
581 decode_getattr_maxsz)
582 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
583 encode_sequence_maxsz + \
584 encode_putfh_maxsz + \
585 encode_lookup_maxsz + \
586 encode_getattr_maxsz + \
587 encode_getfh_maxsz)
588 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
589 decode_sequence_maxsz + \
590 decode_putfh_maxsz + \
591 decode_lookup_maxsz + \
592 decode_getattr_maxsz + \
593 decode_getfh_maxsz)
594 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
595 encode_sequence_maxsz + \
596 encode_putrootfh_maxsz + \
597 encode_getattr_maxsz + \
598 encode_getfh_maxsz)
599 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
600 decode_sequence_maxsz + \
601 decode_putrootfh_maxsz + \
602 decode_getattr_maxsz + \
603 decode_getfh_maxsz)
604 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
605 encode_sequence_maxsz + \
606 encode_putfh_maxsz + \
607 encode_remove_maxsz)
608 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_remove_maxsz)
612 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
613 encode_sequence_maxsz + \
614 encode_putfh_maxsz + \
615 encode_savefh_maxsz + \
616 encode_putfh_maxsz + \
617 encode_rename_maxsz)
618 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
619 decode_sequence_maxsz + \
620 decode_putfh_maxsz + \
621 decode_savefh_maxsz + \
622 decode_putfh_maxsz + \
623 decode_rename_maxsz)
624 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
625 encode_sequence_maxsz + \
626 encode_putfh_maxsz + \
627 encode_savefh_maxsz + \
628 encode_putfh_maxsz + \
629 encode_link_maxsz + \
630 encode_restorefh_maxsz + \
631 encode_getattr_maxsz)
632 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
633 decode_sequence_maxsz + \
634 decode_putfh_maxsz + \
635 decode_savefh_maxsz + \
636 decode_putfh_maxsz + \
637 decode_link_maxsz + \
638 decode_restorefh_maxsz + \
639 decode_getattr_maxsz)
640 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
641 encode_sequence_maxsz + \
642 encode_putfh_maxsz + \
643 encode_symlink_maxsz + \
644 encode_getattr_maxsz + \
645 encode_getfh_maxsz)
646 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
647 decode_sequence_maxsz + \
648 decode_putfh_maxsz + \
649 decode_symlink_maxsz + \
650 decode_getattr_maxsz + \
651 decode_getfh_maxsz)
652 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
653 encode_sequence_maxsz + \
654 encode_putfh_maxsz + \
655 encode_create_maxsz + \
656 encode_getfh_maxsz + \
657 encode_getattr_maxsz)
658 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
659 decode_sequence_maxsz + \
660 decode_putfh_maxsz + \
661 decode_create_maxsz + \
662 decode_getfh_maxsz + \
663 decode_getattr_maxsz)
664 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
665 encode_sequence_maxsz + \
666 encode_putfh_maxsz + \
667 encode_getattr_maxsz)
668 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
669 decode_sequence_maxsz + \
670 decode_putfh_maxsz + \
671 decode_getattr_maxsz)
672 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
673 encode_sequence_maxsz + \
674 encode_putfh_maxsz + \
675 encode_statfs_maxsz)
676 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
677 decode_sequence_maxsz + \
678 decode_putfh_maxsz + \
679 decode_statfs_maxsz)
680 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
681 encode_sequence_maxsz + \
682 encode_putfh_maxsz + \
683 encode_getattr_maxsz)
684 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
685 decode_sequence_maxsz + \
686 decode_putfh_maxsz + \
687 decode_getattr_maxsz)
688 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
689 encode_sequence_maxsz + \
690 encode_putfh_maxsz + \
691 encode_delegreturn_maxsz + \
692 encode_getattr_maxsz)
693 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_delegreturn_maxsz + \
696 decode_getattr_maxsz)
697 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
698 encode_sequence_maxsz + \
699 encode_putfh_maxsz + \
700 encode_getacl_maxsz)
701 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_getacl_maxsz)
705 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
706 encode_sequence_maxsz + \
707 encode_putfh_maxsz + \
708 encode_setacl_maxsz)
709 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
710 decode_sequence_maxsz + \
711 decode_putfh_maxsz + \
712 decode_setacl_maxsz)
713 #define NFS4_enc_fs_locations_sz \
714 (compound_encode_hdr_maxsz + \
715 encode_sequence_maxsz + \
716 encode_putfh_maxsz + \
717 encode_lookup_maxsz + \
718 encode_fs_locations_maxsz)
719 #define NFS4_dec_fs_locations_sz \
720 (compound_decode_hdr_maxsz + \
721 decode_sequence_maxsz + \
722 decode_putfh_maxsz + \
723 decode_lookup_maxsz + \
724 decode_fs_locations_maxsz)
725 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
726 encode_sequence_maxsz + \
727 encode_putfh_maxsz + \
728 encode_secinfo_maxsz)
729 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
730 decode_sequence_maxsz + \
731 decode_putfh_maxsz + \
732 decode_secinfo_maxsz)
733 #if defined(CONFIG_NFS_V4_1)
734 #define NFS4_enc_bind_conn_to_session_sz \
735 (compound_encode_hdr_maxsz + \
736 encode_bind_conn_to_session_maxsz)
737 #define NFS4_dec_bind_conn_to_session_sz \
738 (compound_decode_hdr_maxsz + \
739 decode_bind_conn_to_session_maxsz)
740 #define NFS4_enc_exchange_id_sz \
741 (compound_encode_hdr_maxsz + \
742 encode_exchange_id_maxsz)
743 #define NFS4_dec_exchange_id_sz \
744 (compound_decode_hdr_maxsz + \
745 decode_exchange_id_maxsz)
746 #define NFS4_enc_create_session_sz \
747 (compound_encode_hdr_maxsz + \
748 encode_create_session_maxsz)
749 #define NFS4_dec_create_session_sz \
750 (compound_decode_hdr_maxsz + \
751 decode_create_session_maxsz)
752 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
753 encode_destroy_session_maxsz)
754 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
755 decode_destroy_session_maxsz)
756 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
757 encode_destroy_clientid_maxsz)
758 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
759 decode_destroy_clientid_maxsz)
760 #define NFS4_enc_sequence_sz \
761 (compound_decode_hdr_maxsz + \
762 encode_sequence_maxsz)
763 #define NFS4_dec_sequence_sz \
764 (compound_decode_hdr_maxsz + \
765 decode_sequence_maxsz)
766 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
767 encode_sequence_maxsz + \
768 encode_putrootfh_maxsz + \
769 encode_fsinfo_maxsz)
770 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
771 decode_sequence_maxsz + \
772 decode_putrootfh_maxsz + \
773 decode_fsinfo_maxsz)
774 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
775 encode_sequence_maxsz + \
776 encode_reclaim_complete_maxsz)
777 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_reclaim_complete_maxsz)
780 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
781 encode_sequence_maxsz + \
782 encode_putfh_maxsz + \
783 encode_getdevicelist_maxsz)
784 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
785 decode_sequence_maxsz + \
786 decode_putfh_maxsz + \
787 decode_getdevicelist_maxsz)
788 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
789 encode_sequence_maxsz +\
790 encode_getdeviceinfo_maxsz)
791 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
792 decode_sequence_maxsz + \
793 decode_getdeviceinfo_maxsz)
794 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
795 encode_sequence_maxsz + \
796 encode_putfh_maxsz + \
797 encode_layoutget_maxsz)
798 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
799 decode_sequence_maxsz + \
800 decode_putfh_maxsz + \
801 decode_layoutget_maxsz)
802 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
803 encode_sequence_maxsz +\
804 encode_putfh_maxsz + \
805 encode_layoutcommit_maxsz + \
806 encode_getattr_maxsz)
807 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
808 decode_sequence_maxsz + \
809 decode_putfh_maxsz + \
810 decode_layoutcommit_maxsz + \
811 decode_getattr_maxsz)
812 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
813 encode_sequence_maxsz + \
814 encode_putfh_maxsz + \
815 encode_layoutreturn_maxsz)
816 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
817 decode_sequence_maxsz + \
818 decode_putfh_maxsz + \
819 decode_layoutreturn_maxsz)
820 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz + \
822 encode_putrootfh_maxsz +\
823 encode_secinfo_no_name_maxsz)
824 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putrootfh_maxsz + \
827 decode_secinfo_no_name_maxsz)
828 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
829 encode_sequence_maxsz + \
830 encode_test_stateid_maxsz)
831 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
832 decode_sequence_maxsz + \
833 decode_test_stateid_maxsz)
834 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
835 encode_sequence_maxsz + \
836 encode_free_stateid_maxsz)
837 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
838 decode_sequence_maxsz + \
839 decode_free_stateid_maxsz)
840
841 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
842 compound_encode_hdr_maxsz +
843 encode_sequence_maxsz +
844 encode_putfh_maxsz +
845 encode_getattr_maxsz) *
846 XDR_UNIT);
847
848 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
849 compound_decode_hdr_maxsz +
850 decode_sequence_maxsz +
851 decode_putfh_maxsz) *
852 XDR_UNIT);
853 #endif /* CONFIG_NFS_V4_1 */
854
855 static const umode_t nfs_type2fmt[] = {
856 [NF4BAD] = 0,
857 [NF4REG] = S_IFREG,
858 [NF4DIR] = S_IFDIR,
859 [NF4BLK] = S_IFBLK,
860 [NF4CHR] = S_IFCHR,
861 [NF4LNK] = S_IFLNK,
862 [NF4SOCK] = S_IFSOCK,
863 [NF4FIFO] = S_IFIFO,
864 [NF4ATTRDIR] = 0,
865 [NF4NAMEDATTR] = 0,
866 };
867
868 struct compound_hdr {
869 int32_t status;
870 uint32_t nops;
871 __be32 * nops_p;
872 uint32_t taglen;
873 char * tag;
874 uint32_t replen; /* expected reply words */
875 u32 minorversion;
876 };
877
878 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
879 {
880 __be32 *p = xdr_reserve_space(xdr, nbytes);
881 BUG_ON(!p);
882 return p;
883 }
884
885 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
886 {
887 __be32 *p;
888
889 p = xdr_reserve_space(xdr, len);
890 xdr_encode_opaque_fixed(p, buf, len);
891 }
892
893 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
894 {
895 __be32 *p;
896
897 p = reserve_space(xdr, 4 + len);
898 xdr_encode_opaque(p, str, len);
899 }
900
901 static void encode_uint32(struct xdr_stream *xdr, u32 n)
902 {
903 __be32 *p;
904
905 p = reserve_space(xdr, 4);
906 *p = cpu_to_be32(n);
907 }
908
909 static void encode_uint64(struct xdr_stream *xdr, u64 n)
910 {
911 __be32 *p;
912
913 p = reserve_space(xdr, 8);
914 xdr_encode_hyper(p, n);
915 }
916
917 static void encode_nfs4_seqid(struct xdr_stream *xdr,
918 const struct nfs_seqid *seqid)
919 {
920 encode_uint32(xdr, seqid->sequence->counter);
921 }
922
923 static void encode_compound_hdr(struct xdr_stream *xdr,
924 struct rpc_rqst *req,
925 struct compound_hdr *hdr)
926 {
927 __be32 *p;
928 struct rpc_auth *auth = req->rq_cred->cr_auth;
929
930 /* initialize running count of expected bytes in reply.
931 * NOTE: the replied tag SHOULD be the same is the one sent,
932 * but this is not required as a MUST for the server to do so. */
933 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
934
935 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
936 encode_string(xdr, hdr->taglen, hdr->tag);
937 p = reserve_space(xdr, 8);
938 *p++ = cpu_to_be32(hdr->minorversion);
939 hdr->nops_p = p;
940 *p = cpu_to_be32(hdr->nops);
941 }
942
943 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
944 uint32_t replen,
945 struct compound_hdr *hdr)
946 {
947 encode_uint32(xdr, op);
948 hdr->nops++;
949 hdr->replen += replen;
950 }
951
952 static void encode_nops(struct compound_hdr *hdr)
953 {
954 BUG_ON(hdr->nops > NFS4_MAX_OPS);
955 *hdr->nops_p = htonl(hdr->nops);
956 }
957
958 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
959 {
960 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
961 }
962
963 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
964 {
965 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
966 }
967
968 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
969 {
970 char owner_name[IDMAP_NAMESZ];
971 char owner_group[IDMAP_NAMESZ];
972 int owner_namelen = 0;
973 int owner_grouplen = 0;
974 __be32 *p;
975 __be32 *q;
976 int len;
977 uint32_t bmval0 = 0;
978 uint32_t bmval1 = 0;
979
980 /*
981 * We reserve enough space to write the entire attribute buffer at once.
982 * In the worst-case, this would be
983 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
984 * = 36 bytes, plus any contribution from variable-length fields
985 * such as owner/group.
986 */
987 len = 16;
988
989 /* Sigh */
990 if (iap->ia_valid & ATTR_SIZE)
991 len += 8;
992 if (iap->ia_valid & ATTR_MODE)
993 len += 4;
994 if (iap->ia_valid & ATTR_UID) {
995 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
996 if (owner_namelen < 0) {
997 dprintk("nfs: couldn't resolve uid %d to string\n",
998 iap->ia_uid);
999 /* XXX */
1000 strcpy(owner_name, "nobody");
1001 owner_namelen = sizeof("nobody") - 1;
1002 /* goto out; */
1003 }
1004 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1005 }
1006 if (iap->ia_valid & ATTR_GID) {
1007 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1008 if (owner_grouplen < 0) {
1009 dprintk("nfs: couldn't resolve gid %d to string\n",
1010 iap->ia_gid);
1011 strcpy(owner_group, "nobody");
1012 owner_grouplen = sizeof("nobody") - 1;
1013 /* goto out; */
1014 }
1015 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1016 }
1017 if (iap->ia_valid & ATTR_ATIME_SET)
1018 len += 16;
1019 else if (iap->ia_valid & ATTR_ATIME)
1020 len += 4;
1021 if (iap->ia_valid & ATTR_MTIME_SET)
1022 len += 16;
1023 else if (iap->ia_valid & ATTR_MTIME)
1024 len += 4;
1025 p = reserve_space(xdr, len);
1026
1027 /*
1028 * We write the bitmap length now, but leave the bitmap and the attribute
1029 * buffer length to be backfilled at the end of this routine.
1030 */
1031 *p++ = cpu_to_be32(2);
1032 q = p;
1033 p += 3;
1034
1035 if (iap->ia_valid & ATTR_SIZE) {
1036 bmval0 |= FATTR4_WORD0_SIZE;
1037 p = xdr_encode_hyper(p, iap->ia_size);
1038 }
1039 if (iap->ia_valid & ATTR_MODE) {
1040 bmval1 |= FATTR4_WORD1_MODE;
1041 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1042 }
1043 if (iap->ia_valid & ATTR_UID) {
1044 bmval1 |= FATTR4_WORD1_OWNER;
1045 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1046 }
1047 if (iap->ia_valid & ATTR_GID) {
1048 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1049 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1050 }
1051 if (iap->ia_valid & ATTR_ATIME_SET) {
1052 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1053 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1054 *p++ = cpu_to_be32(0);
1055 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1056 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1057 }
1058 else if (iap->ia_valid & ATTR_ATIME) {
1059 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1060 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1061 }
1062 if (iap->ia_valid & ATTR_MTIME_SET) {
1063 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1064 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1065 *p++ = cpu_to_be32(0);
1066 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1067 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1068 }
1069 else if (iap->ia_valid & ATTR_MTIME) {
1070 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1071 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1072 }
1073
1074 /*
1075 * Now we backfill the bitmap and the attribute buffer length.
1076 */
1077 if (len != ((char *)p - (char *)q) + 4) {
1078 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1079 len, ((char *)p - (char *)q) + 4);
1080 BUG();
1081 }
1082 len = (char *)p - (char *)q - 12;
1083 *q++ = htonl(bmval0);
1084 *q++ = htonl(bmval1);
1085 *q = htonl(len);
1086
1087 /* out: */
1088 }
1089
1090 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1091 {
1092 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1093 encode_uint32(xdr, access);
1094 }
1095
1096 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1097 {
1098 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1099 encode_nfs4_seqid(xdr, arg->seqid);
1100 encode_nfs4_stateid(xdr, arg->stateid);
1101 }
1102
1103 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1104 {
1105 __be32 *p;
1106
1107 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1108 p = reserve_space(xdr, 12);
1109 p = xdr_encode_hyper(p, args->offset);
1110 *p = cpu_to_be32(args->count);
1111 }
1112
1113 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1114 {
1115 __be32 *p;
1116
1117 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1118 encode_uint32(xdr, create->ftype);
1119
1120 switch (create->ftype) {
1121 case NF4LNK:
1122 p = reserve_space(xdr, 4);
1123 *p = cpu_to_be32(create->u.symlink.len);
1124 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1125 break;
1126
1127 case NF4BLK: case NF4CHR:
1128 p = reserve_space(xdr, 8);
1129 *p++ = cpu_to_be32(create->u.device.specdata1);
1130 *p = cpu_to_be32(create->u.device.specdata2);
1131 break;
1132
1133 default:
1134 break;
1135 }
1136
1137 encode_string(xdr, create->name->len, create->name->name);
1138 encode_attrs(xdr, create->attrs, create->server);
1139 }
1140
1141 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1142 {
1143 __be32 *p;
1144
1145 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1146 p = reserve_space(xdr, 8);
1147 *p++ = cpu_to_be32(1);
1148 *p = cpu_to_be32(bitmap);
1149 }
1150
1151 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1152 {
1153 __be32 *p;
1154
1155 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1156 p = reserve_space(xdr, 12);
1157 *p++ = cpu_to_be32(2);
1158 *p++ = cpu_to_be32(bm0);
1159 *p = cpu_to_be32(bm1);
1160 }
1161
1162 static void
1163 encode_getattr_three(struct xdr_stream *xdr,
1164 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1165 struct compound_hdr *hdr)
1166 {
1167 __be32 *p;
1168
1169 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1170 if (bm2) {
1171 p = reserve_space(xdr, 16);
1172 *p++ = cpu_to_be32(3);
1173 *p++ = cpu_to_be32(bm0);
1174 *p++ = cpu_to_be32(bm1);
1175 *p = cpu_to_be32(bm2);
1176 } else if (bm1) {
1177 p = reserve_space(xdr, 12);
1178 *p++ = cpu_to_be32(2);
1179 *p++ = cpu_to_be32(bm0);
1180 *p = cpu_to_be32(bm1);
1181 } else {
1182 p = reserve_space(xdr, 8);
1183 *p++ = cpu_to_be32(1);
1184 *p = cpu_to_be32(bm0);
1185 }
1186 }
1187
1188 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1189 {
1190 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1191 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
1192 }
1193
1194 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1195 const u32 *open_bitmap,
1196 struct compound_hdr *hdr)
1197 {
1198 encode_getattr_three(xdr,
1199 bitmask[0] & open_bitmap[0],
1200 bitmask[1] & open_bitmap[1],
1201 bitmask[2] & open_bitmap[2],
1202 hdr);
1203 }
1204
1205 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1206 {
1207 encode_getattr_three(xdr,
1208 bitmask[0] & nfs4_fsinfo_bitmap[0],
1209 bitmask[1] & nfs4_fsinfo_bitmap[1],
1210 bitmask[2] & nfs4_fsinfo_bitmap[2],
1211 hdr);
1212 }
1213
1214 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1215 {
1216 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1217 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1218 }
1219
1220 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1221 {
1222 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1223 }
1224
1225 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1226 {
1227 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1228 encode_string(xdr, name->len, name->name);
1229 }
1230
1231 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1232 {
1233 if (fl->fl_type == F_RDLCK)
1234 return block ? NFS4_READW_LT : NFS4_READ_LT;
1235 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1236 }
1237
1238 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1239 {
1240 if (fl->fl_end == OFFSET_MAX)
1241 return ~(uint64_t)0;
1242 return fl->fl_end - fl->fl_start + 1;
1243 }
1244
1245 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1246 {
1247 __be32 *p;
1248
1249 p = reserve_space(xdr, 32);
1250 p = xdr_encode_hyper(p, lowner->clientid);
1251 *p++ = cpu_to_be32(20);
1252 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1253 *p++ = cpu_to_be32(lowner->s_dev);
1254 xdr_encode_hyper(p, lowner->id);
1255 }
1256
1257 /*
1258 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1259 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1260 */
1261 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1262 {
1263 __be32 *p;
1264
1265 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1266 p = reserve_space(xdr, 28);
1267 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1268 *p++ = cpu_to_be32(args->reclaim);
1269 p = xdr_encode_hyper(p, args->fl->fl_start);
1270 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1271 *p = cpu_to_be32(args->new_lock_owner);
1272 if (args->new_lock_owner){
1273 encode_nfs4_seqid(xdr, args->open_seqid);
1274 encode_nfs4_stateid(xdr, args->open_stateid);
1275 encode_nfs4_seqid(xdr, args->lock_seqid);
1276 encode_lockowner(xdr, &args->lock_owner);
1277 }
1278 else {
1279 encode_nfs4_stateid(xdr, args->lock_stateid);
1280 encode_nfs4_seqid(xdr, args->lock_seqid);
1281 }
1282 }
1283
1284 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1285 {
1286 __be32 *p;
1287
1288 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1289 p = reserve_space(xdr, 20);
1290 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1291 p = xdr_encode_hyper(p, args->fl->fl_start);
1292 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1293 encode_lockowner(xdr, &args->lock_owner);
1294 }
1295
1296 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1297 {
1298 __be32 *p;
1299
1300 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1301 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1302 encode_nfs4_seqid(xdr, args->seqid);
1303 encode_nfs4_stateid(xdr, args->stateid);
1304 p = reserve_space(xdr, 16);
1305 p = xdr_encode_hyper(p, args->fl->fl_start);
1306 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1307 }
1308
1309 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1310 {
1311 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1312 encode_lockowner(xdr, lowner);
1313 }
1314
1315 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1316 {
1317 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1318 encode_string(xdr, name->len, name->name);
1319 }
1320
1321 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1322 {
1323 __be32 *p;
1324
1325 p = reserve_space(xdr, 8);
1326 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1327 case FMODE_READ:
1328 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1329 break;
1330 case FMODE_WRITE:
1331 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1332 break;
1333 case FMODE_READ|FMODE_WRITE:
1334 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1335 break;
1336 default:
1337 *p++ = cpu_to_be32(0);
1338 }
1339 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1340 }
1341
1342 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1343 {
1344 __be32 *p;
1345 /*
1346 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1347 * owner 4 = 32
1348 */
1349 encode_nfs4_seqid(xdr, arg->seqid);
1350 encode_share_access(xdr, arg->fmode);
1351 p = reserve_space(xdr, 36);
1352 p = xdr_encode_hyper(p, arg->clientid);
1353 *p++ = cpu_to_be32(24);
1354 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1355 *p++ = cpu_to_be32(arg->server->s_dev);
1356 *p++ = cpu_to_be32(arg->id.uniquifier);
1357 xdr_encode_hyper(p, arg->id.create_time);
1358 }
1359
1360 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1361 {
1362 __be32 *p;
1363 struct nfs_client *clp;
1364
1365 p = reserve_space(xdr, 4);
1366 switch(arg->open_flags & O_EXCL) {
1367 case 0:
1368 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1369 encode_attrs(xdr, arg->u.attrs, arg->server);
1370 break;
1371 default:
1372 clp = arg->server->nfs_client;
1373 if (clp->cl_mvops->minor_version > 0) {
1374 if (nfs4_has_persistent_session(clp)) {
1375 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1376 encode_attrs(xdr, arg->u.attrs, arg->server);
1377 } else {
1378 struct iattr dummy;
1379
1380 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1381 encode_nfs4_verifier(xdr, &arg->u.verifier);
1382 dummy.ia_valid = 0;
1383 encode_attrs(xdr, &dummy, arg->server);
1384 }
1385 } else {
1386 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1387 encode_nfs4_verifier(xdr, &arg->u.verifier);
1388 }
1389 }
1390 }
1391
1392 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1393 {
1394 __be32 *p;
1395
1396 p = reserve_space(xdr, 4);
1397 switch (arg->open_flags & O_CREAT) {
1398 case 0:
1399 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1400 break;
1401 default:
1402 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1403 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1404 encode_createmode(xdr, arg);
1405 }
1406 }
1407
1408 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1409 {
1410 __be32 *p;
1411
1412 p = reserve_space(xdr, 4);
1413 switch (delegation_type) {
1414 case 0:
1415 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1416 break;
1417 case FMODE_READ:
1418 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1419 break;
1420 case FMODE_WRITE|FMODE_READ:
1421 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1422 break;
1423 default:
1424 BUG();
1425 }
1426 }
1427
1428 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1429 {
1430 __be32 *p;
1431
1432 p = reserve_space(xdr, 4);
1433 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1434 encode_string(xdr, name->len, name->name);
1435 }
1436
1437 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1438 {
1439 __be32 *p;
1440
1441 p = reserve_space(xdr, 4);
1442 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1443 encode_delegation_type(xdr, type);
1444 }
1445
1446 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1447 {
1448 __be32 *p;
1449
1450 p = reserve_space(xdr, 4);
1451 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1452 encode_nfs4_stateid(xdr, stateid);
1453 encode_string(xdr, name->len, name->name);
1454 }
1455
1456 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1457 {
1458 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1459 encode_openhdr(xdr, arg);
1460 encode_opentype(xdr, arg);
1461 switch (arg->claim) {
1462 case NFS4_OPEN_CLAIM_NULL:
1463 encode_claim_null(xdr, arg->name);
1464 break;
1465 case NFS4_OPEN_CLAIM_PREVIOUS:
1466 encode_claim_previous(xdr, arg->u.delegation_type);
1467 break;
1468 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1469 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1470 break;
1471 default:
1472 BUG();
1473 }
1474 }
1475
1476 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1477 {
1478 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1479 encode_nfs4_stateid(xdr, arg->stateid);
1480 encode_nfs4_seqid(xdr, arg->seqid);
1481 }
1482
1483 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1484 {
1485 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1486 encode_nfs4_stateid(xdr, arg->stateid);
1487 encode_nfs4_seqid(xdr, arg->seqid);
1488 encode_share_access(xdr, arg->fmode);
1489 }
1490
1491 static void
1492 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1493 {
1494 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1495 encode_string(xdr, fh->size, fh->data);
1496 }
1497
1498 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1499 {
1500 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1501 }
1502
1503 static void encode_open_stateid(struct xdr_stream *xdr,
1504 const struct nfs_open_context *ctx,
1505 const struct nfs_lock_context *l_ctx,
1506 fmode_t fmode,
1507 int zero_seqid)
1508 {
1509 nfs4_stateid stateid;
1510
1511 if (ctx->state != NULL) {
1512 nfs4_select_rw_stateid(&stateid, ctx->state,
1513 fmode, l_ctx->lockowner, l_ctx->pid);
1514 if (zero_seqid)
1515 stateid.seqid = 0;
1516 encode_nfs4_stateid(xdr, &stateid);
1517 } else
1518 encode_nfs4_stateid(xdr, &zero_stateid);
1519 }
1520
1521 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1522 {
1523 __be32 *p;
1524
1525 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1526 encode_open_stateid(xdr, args->context, args->lock_context,
1527 FMODE_READ, hdr->minorversion);
1528
1529 p = reserve_space(xdr, 12);
1530 p = xdr_encode_hyper(p, args->offset);
1531 *p = cpu_to_be32(args->count);
1532 }
1533
1534 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1535 {
1536 uint32_t attrs[2] = {
1537 FATTR4_WORD0_RDATTR_ERROR,
1538 FATTR4_WORD1_MOUNTED_ON_FILEID,
1539 };
1540 uint32_t dircount = readdir->count >> 1;
1541 __be32 *p, verf[2];
1542
1543 if (readdir->plus) {
1544 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1545 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1546 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1547 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1548 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1549 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1550 dircount >>= 1;
1551 }
1552 /* Use mounted_on_fileid only if the server supports it */
1553 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1554 attrs[0] |= FATTR4_WORD0_FILEID;
1555
1556 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1557 encode_uint64(xdr, readdir->cookie);
1558 encode_nfs4_verifier(xdr, &readdir->verifier);
1559 p = reserve_space(xdr, 20);
1560 *p++ = cpu_to_be32(dircount);
1561 *p++ = cpu_to_be32(readdir->count);
1562 *p++ = cpu_to_be32(2);
1563
1564 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1565 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1566 memcpy(verf, readdir->verifier.data, sizeof(verf));
1567 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1568 __func__,
1569 (unsigned long long)readdir->cookie,
1570 verf[0], verf[1],
1571 attrs[0] & readdir->bitmask[0],
1572 attrs[1] & readdir->bitmask[1]);
1573 }
1574
1575 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1576 {
1577 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1578 }
1579
1580 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1581 {
1582 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1583 encode_string(xdr, name->len, name->name);
1584 }
1585
1586 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1587 {
1588 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1589 encode_string(xdr, oldname->len, oldname->name);
1590 encode_string(xdr, newname->len, newname->name);
1591 }
1592
1593 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1594 struct compound_hdr *hdr)
1595 {
1596 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1597 encode_uint64(xdr, clid);
1598 }
1599
1600 static void
1601 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1602 {
1603 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1604 }
1605
1606 static void
1607 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1608 {
1609 __be32 *p;
1610
1611 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1612 encode_nfs4_stateid(xdr, &zero_stateid);
1613 p = reserve_space(xdr, 2*4);
1614 *p++ = cpu_to_be32(1);
1615 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1616 BUG_ON(arg->acl_len % 4);
1617 p = reserve_space(xdr, 4);
1618 *p = cpu_to_be32(arg->acl_len);
1619 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1620 }
1621
1622 static void
1623 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1624 {
1625 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1626 }
1627
1628 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1629 {
1630 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1631 encode_nfs4_stateid(xdr, &arg->stateid);
1632 encode_attrs(xdr, arg->iap, server);
1633 }
1634
1635 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1636 {
1637 __be32 *p;
1638
1639 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1640 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1641
1642 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1643 p = reserve_space(xdr, 4);
1644 *p = cpu_to_be32(setclientid->sc_prog);
1645 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1646 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1647 p = reserve_space(xdr, 4);
1648 *p = cpu_to_be32(setclientid->sc_cb_ident);
1649 }
1650
1651 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1652 {
1653 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1654 decode_setclientid_confirm_maxsz, hdr);
1655 encode_uint64(xdr, arg->clientid);
1656 encode_nfs4_verifier(xdr, &arg->confirm);
1657 }
1658
1659 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1660 {
1661 __be32 *p;
1662
1663 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1664 encode_open_stateid(xdr, args->context, args->lock_context,
1665 FMODE_WRITE, hdr->minorversion);
1666
1667 p = reserve_space(xdr, 16);
1668 p = xdr_encode_hyper(p, args->offset);
1669 *p++ = cpu_to_be32(args->stable);
1670 *p = cpu_to_be32(args->count);
1671
1672 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1673 }
1674
1675 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1676 {
1677 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1678 encode_nfs4_stateid(xdr, stateid);
1679 }
1680
1681 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1682 {
1683 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1684 encode_string(xdr, name->len, name->name);
1685 }
1686
1687 #if defined(CONFIG_NFS_V4_1)
1688 /* NFSv4.1 operations */
1689 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1690 struct nfs4_session *session,
1691 struct compound_hdr *hdr)
1692 {
1693 __be32 *p;
1694
1695 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1696 decode_bind_conn_to_session_maxsz, hdr);
1697 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1698 p = xdr_reserve_space(xdr, 8);
1699 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1700 *p = 0; /* use_conn_in_rdma_mode = False */
1701 }
1702
1703 static void encode_exchange_id(struct xdr_stream *xdr,
1704 struct nfs41_exchange_id_args *args,
1705 struct compound_hdr *hdr)
1706 {
1707 __be32 *p;
1708 char impl_name[NFS4_OPAQUE_LIMIT];
1709 int len = 0;
1710
1711 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1712 encode_nfs4_verifier(xdr, args->verifier);
1713
1714 encode_string(xdr, args->id_len, args->id);
1715
1716 p = reserve_space(xdr, 12);
1717 *p++ = cpu_to_be32(args->flags);
1718 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1719
1720 if (send_implementation_id &&
1721 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1722 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1723 <= NFS4_OPAQUE_LIMIT + 1)
1724 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1725 utsname()->sysname, utsname()->release,
1726 utsname()->version, utsname()->machine);
1727
1728 if (len > 0) {
1729 *p = cpu_to_be32(1); /* implementation id array length=1 */
1730
1731 encode_string(xdr,
1732 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1733 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1734 encode_string(xdr, len, impl_name);
1735 /* just send zeros for nii_date - the date is in nii_name */
1736 p = reserve_space(xdr, 12);
1737 p = xdr_encode_hyper(p, 0);
1738 *p = cpu_to_be32(0);
1739 } else
1740 *p = cpu_to_be32(0); /* implementation id array length=0 */
1741 }
1742
1743 static void encode_create_session(struct xdr_stream *xdr,
1744 struct nfs41_create_session_args *args,
1745 struct compound_hdr *hdr)
1746 {
1747 __be32 *p;
1748 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1749 uint32_t len;
1750 struct nfs_client *clp = args->client;
1751 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1752 u32 max_resp_sz_cached;
1753
1754 /*
1755 * Assumes OPEN is the biggest non-idempotent compound.
1756 * 2 is the verifier.
1757 */
1758 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1759 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1760
1761 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1762 clp->cl_ipaddr);
1763
1764 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1765 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1766 p = xdr_encode_hyper(p, clp->cl_clientid);
1767 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1768 *p++ = cpu_to_be32(args->flags); /*flags */
1769
1770 /* Fore Channel */
1771 *p++ = cpu_to_be32(0); /* header padding size */
1772 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1773 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1774 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1775 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1776 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1777 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1778
1779 /* Back Channel */
1780 *p++ = cpu_to_be32(0); /* header padding size */
1781 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1782 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1783 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1784 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1785 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1786 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1787
1788 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1789 *p++ = cpu_to_be32(1);
1790 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1791
1792 /* authsys_parms rfc1831 */
1793 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1794 p = xdr_encode_opaque(p, machine_name, len);
1795 *p++ = cpu_to_be32(0); /* UID */
1796 *p++ = cpu_to_be32(0); /* GID */
1797 *p = cpu_to_be32(0); /* No more gids */
1798 }
1799
1800 static void encode_destroy_session(struct xdr_stream *xdr,
1801 struct nfs4_session *session,
1802 struct compound_hdr *hdr)
1803 {
1804 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1805 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1806 }
1807
1808 static void encode_destroy_clientid(struct xdr_stream *xdr,
1809 uint64_t clientid,
1810 struct compound_hdr *hdr)
1811 {
1812 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1813 encode_uint64(xdr, clientid);
1814 }
1815
1816 static void encode_reclaim_complete(struct xdr_stream *xdr,
1817 struct nfs41_reclaim_complete_args *args,
1818 struct compound_hdr *hdr)
1819 {
1820 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1821 encode_uint32(xdr, args->one_fs);
1822 }
1823 #endif /* CONFIG_NFS_V4_1 */
1824
1825 static void encode_sequence(struct xdr_stream *xdr,
1826 const struct nfs4_sequence_args *args,
1827 struct compound_hdr *hdr)
1828 {
1829 #if defined(CONFIG_NFS_V4_1)
1830 struct nfs4_session *session = args->sa_session;
1831 struct nfs4_slot_table *tp;
1832 struct nfs4_slot *slot;
1833 __be32 *p;
1834
1835 if (!session)
1836 return;
1837
1838 tp = &session->fc_slot_table;
1839
1840 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1841 slot = tp->slots + args->sa_slotid;
1842
1843 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1844
1845 /*
1846 * Sessionid + seqid + slotid + max slotid + cache_this
1847 */
1848 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1849 "max_slotid=%d cache_this=%d\n",
1850 __func__,
1851 ((u32 *)session->sess_id.data)[0],
1852 ((u32 *)session->sess_id.data)[1],
1853 ((u32 *)session->sess_id.data)[2],
1854 ((u32 *)session->sess_id.data)[3],
1855 slot->seq_nr, args->sa_slotid,
1856 tp->highest_used_slotid, args->sa_cache_this);
1857 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1858 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1859 *p++ = cpu_to_be32(slot->seq_nr);
1860 *p++ = cpu_to_be32(args->sa_slotid);
1861 *p++ = cpu_to_be32(tp->highest_used_slotid);
1862 *p = cpu_to_be32(args->sa_cache_this);
1863 #endif /* CONFIG_NFS_V4_1 */
1864 }
1865
1866 #ifdef CONFIG_NFS_V4_1
1867 static void
1868 encode_getdevicelist(struct xdr_stream *xdr,
1869 const struct nfs4_getdevicelist_args *args,
1870 struct compound_hdr *hdr)
1871 {
1872 __be32 *p;
1873 nfs4_verifier dummy = {
1874 .data = "dummmmmy",
1875 };
1876
1877 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1878 p = reserve_space(xdr, 16);
1879 *p++ = cpu_to_be32(args->layoutclass);
1880 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1881 xdr_encode_hyper(p, 0ULL); /* cookie */
1882 encode_nfs4_verifier(xdr, &dummy);
1883 }
1884
1885 static void
1886 encode_getdeviceinfo(struct xdr_stream *xdr,
1887 const struct nfs4_getdeviceinfo_args *args,
1888 struct compound_hdr *hdr)
1889 {
1890 __be32 *p;
1891
1892 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1893 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1894 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1895 NFS4_DEVICEID4_SIZE);
1896 *p++ = cpu_to_be32(args->pdev->layout_type);
1897 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1898 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1899 }
1900
1901 static void
1902 encode_layoutget(struct xdr_stream *xdr,
1903 const struct nfs4_layoutget_args *args,
1904 struct compound_hdr *hdr)
1905 {
1906 __be32 *p;
1907
1908 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1909 p = reserve_space(xdr, 36);
1910 *p++ = cpu_to_be32(0); /* Signal layout available */
1911 *p++ = cpu_to_be32(args->type);
1912 *p++ = cpu_to_be32(args->range.iomode);
1913 p = xdr_encode_hyper(p, args->range.offset);
1914 p = xdr_encode_hyper(p, args->range.length);
1915 p = xdr_encode_hyper(p, args->minlength);
1916 encode_nfs4_stateid(xdr, &args->stateid);
1917 encode_uint32(xdr, args->maxcount);
1918
1919 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1920 __func__,
1921 args->type,
1922 args->range.iomode,
1923 (unsigned long)args->range.offset,
1924 (unsigned long)args->range.length,
1925 args->maxcount);
1926 }
1927
1928 static int
1929 encode_layoutcommit(struct xdr_stream *xdr,
1930 struct inode *inode,
1931 const struct nfs4_layoutcommit_args *args,
1932 struct compound_hdr *hdr)
1933 {
1934 __be32 *p;
1935
1936 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1937 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1938
1939 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1940 p = reserve_space(xdr, 20);
1941 /* Only whole file layouts */
1942 p = xdr_encode_hyper(p, 0); /* offset */
1943 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1944 *p = cpu_to_be32(0); /* reclaim */
1945 encode_nfs4_stateid(xdr, &args->stateid);
1946 p = reserve_space(xdr, 20);
1947 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1948 p = xdr_encode_hyper(p, args->lastbytewritten);
1949 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1950 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1951
1952 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1953 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1954 NFS_I(inode)->layout, xdr, args);
1955 else
1956 encode_uint32(xdr, 0); /* no layout-type payload */
1957
1958 return 0;
1959 }
1960
1961 static void
1962 encode_layoutreturn(struct xdr_stream *xdr,
1963 const struct nfs4_layoutreturn_args *args,
1964 struct compound_hdr *hdr)
1965 {
1966 __be32 *p;
1967
1968 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1969 p = reserve_space(xdr, 16);
1970 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1971 *p++ = cpu_to_be32(args->layout_type);
1972 *p++ = cpu_to_be32(IOMODE_ANY);
1973 *p = cpu_to_be32(RETURN_FILE);
1974 p = reserve_space(xdr, 16);
1975 p = xdr_encode_hyper(p, 0);
1976 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1977 spin_lock(&args->inode->i_lock);
1978 encode_nfs4_stateid(xdr, &args->stateid);
1979 spin_unlock(&args->inode->i_lock);
1980 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1981 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1982 NFS_I(args->inode)->layout, xdr, args);
1983 } else
1984 encode_uint32(xdr, 0);
1985 }
1986
1987 static int
1988 encode_secinfo_no_name(struct xdr_stream *xdr,
1989 const struct nfs41_secinfo_no_name_args *args,
1990 struct compound_hdr *hdr)
1991 {
1992 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
1993 encode_uint32(xdr, args->style);
1994 return 0;
1995 }
1996
1997 static void encode_test_stateid(struct xdr_stream *xdr,
1998 struct nfs41_test_stateid_args *args,
1999 struct compound_hdr *hdr)
2000 {
2001 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2002 encode_uint32(xdr, 1);
2003 encode_nfs4_stateid(xdr, args->stateid);
2004 }
2005
2006 static void encode_free_stateid(struct xdr_stream *xdr,
2007 struct nfs41_free_stateid_args *args,
2008 struct compound_hdr *hdr)
2009 {
2010 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2011 encode_nfs4_stateid(xdr, args->stateid);
2012 }
2013 #endif /* CONFIG_NFS_V4_1 */
2014
2015 /*
2016 * END OF "GENERIC" ENCODE ROUTINES.
2017 */
2018
2019 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2020 {
2021 #if defined(CONFIG_NFS_V4_1)
2022 if (args->sa_session)
2023 return args->sa_session->clp->cl_mvops->minor_version;
2024 #endif /* CONFIG_NFS_V4_1 */
2025 return 0;
2026 }
2027
2028 /*
2029 * Encode an ACCESS request
2030 */
2031 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2032 const struct nfs4_accessargs *args)
2033 {
2034 struct compound_hdr hdr = {
2035 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2036 };
2037
2038 encode_compound_hdr(xdr, req, &hdr);
2039 encode_sequence(xdr, &args->seq_args, &hdr);
2040 encode_putfh(xdr, args->fh, &hdr);
2041 encode_access(xdr, args->access, &hdr);
2042 encode_getfattr(xdr, args->bitmask, &hdr);
2043 encode_nops(&hdr);
2044 }
2045
2046 /*
2047 * Encode LOOKUP request
2048 */
2049 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2050 const struct nfs4_lookup_arg *args)
2051 {
2052 struct compound_hdr hdr = {
2053 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2054 };
2055
2056 encode_compound_hdr(xdr, req, &hdr);
2057 encode_sequence(xdr, &args->seq_args, &hdr);
2058 encode_putfh(xdr, args->dir_fh, &hdr);
2059 encode_lookup(xdr, args->name, &hdr);
2060 encode_getfh(xdr, &hdr);
2061 encode_getfattr(xdr, args->bitmask, &hdr);
2062 encode_nops(&hdr);
2063 }
2064
2065 /*
2066 * Encode LOOKUP_ROOT request
2067 */
2068 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2069 struct xdr_stream *xdr,
2070 const struct nfs4_lookup_root_arg *args)
2071 {
2072 struct compound_hdr hdr = {
2073 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2074 };
2075
2076 encode_compound_hdr(xdr, req, &hdr);
2077 encode_sequence(xdr, &args->seq_args, &hdr);
2078 encode_putrootfh(xdr, &hdr);
2079 encode_getfh(xdr, &hdr);
2080 encode_getfattr(xdr, args->bitmask, &hdr);
2081 encode_nops(&hdr);
2082 }
2083
2084 /*
2085 * Encode REMOVE request
2086 */
2087 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2088 const struct nfs_removeargs *args)
2089 {
2090 struct compound_hdr hdr = {
2091 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2092 };
2093
2094 encode_compound_hdr(xdr, req, &hdr);
2095 encode_sequence(xdr, &args->seq_args, &hdr);
2096 encode_putfh(xdr, args->fh, &hdr);
2097 encode_remove(xdr, &args->name, &hdr);
2098 encode_nops(&hdr);
2099 }
2100
2101 /*
2102 * Encode RENAME request
2103 */
2104 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2105 const struct nfs_renameargs *args)
2106 {
2107 struct compound_hdr hdr = {
2108 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2109 };
2110
2111 encode_compound_hdr(xdr, req, &hdr);
2112 encode_sequence(xdr, &args->seq_args, &hdr);
2113 encode_putfh(xdr, args->old_dir, &hdr);
2114 encode_savefh(xdr, &hdr);
2115 encode_putfh(xdr, args->new_dir, &hdr);
2116 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2117 encode_nops(&hdr);
2118 }
2119
2120 /*
2121 * Encode LINK request
2122 */
2123 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2124 const struct nfs4_link_arg *args)
2125 {
2126 struct compound_hdr hdr = {
2127 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2128 };
2129
2130 encode_compound_hdr(xdr, req, &hdr);
2131 encode_sequence(xdr, &args->seq_args, &hdr);
2132 encode_putfh(xdr, args->fh, &hdr);
2133 encode_savefh(xdr, &hdr);
2134 encode_putfh(xdr, args->dir_fh, &hdr);
2135 encode_link(xdr, args->name, &hdr);
2136 encode_restorefh(xdr, &hdr);
2137 encode_getfattr(xdr, args->bitmask, &hdr);
2138 encode_nops(&hdr);
2139 }
2140
2141 /*
2142 * Encode CREATE request
2143 */
2144 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2145 const struct nfs4_create_arg *args)
2146 {
2147 struct compound_hdr hdr = {
2148 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2149 };
2150
2151 encode_compound_hdr(xdr, req, &hdr);
2152 encode_sequence(xdr, &args->seq_args, &hdr);
2153 encode_putfh(xdr, args->dir_fh, &hdr);
2154 encode_create(xdr, args, &hdr);
2155 encode_getfh(xdr, &hdr);
2156 encode_getfattr(xdr, args->bitmask, &hdr);
2157 encode_nops(&hdr);
2158 }
2159
2160 /*
2161 * Encode SYMLINK request
2162 */
2163 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2164 const struct nfs4_create_arg *args)
2165 {
2166 nfs4_xdr_enc_create(req, xdr, args);
2167 }
2168
2169 /*
2170 * Encode GETATTR request
2171 */
2172 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2173 const struct nfs4_getattr_arg *args)
2174 {
2175 struct compound_hdr hdr = {
2176 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2177 };
2178
2179 encode_compound_hdr(xdr, req, &hdr);
2180 encode_sequence(xdr, &args->seq_args, &hdr);
2181 encode_putfh(xdr, args->fh, &hdr);
2182 encode_getfattr(xdr, args->bitmask, &hdr);
2183 encode_nops(&hdr);
2184 }
2185
2186 /*
2187 * Encode a CLOSE request
2188 */
2189 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2190 struct nfs_closeargs *args)
2191 {
2192 struct compound_hdr hdr = {
2193 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2194 };
2195
2196 encode_compound_hdr(xdr, req, &hdr);
2197 encode_sequence(xdr, &args->seq_args, &hdr);
2198 encode_putfh(xdr, args->fh, &hdr);
2199 encode_close(xdr, args, &hdr);
2200 encode_getfattr(xdr, args->bitmask, &hdr);
2201 encode_nops(&hdr);
2202 }
2203
2204 /*
2205 * Encode an OPEN request
2206 */
2207 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2208 struct nfs_openargs *args)
2209 {
2210 struct compound_hdr hdr = {
2211 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2212 };
2213
2214 encode_compound_hdr(xdr, req, &hdr);
2215 encode_sequence(xdr, &args->seq_args, &hdr);
2216 encode_putfh(xdr, args->fh, &hdr);
2217 encode_open(xdr, args, &hdr);
2218 encode_getfh(xdr, &hdr);
2219 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2220 encode_nops(&hdr);
2221 }
2222
2223 /*
2224 * Encode an OPEN_CONFIRM request
2225 */
2226 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2227 struct xdr_stream *xdr,
2228 struct nfs_open_confirmargs *args)
2229 {
2230 struct compound_hdr hdr = {
2231 .nops = 0,
2232 };
2233
2234 encode_compound_hdr(xdr, req, &hdr);
2235 encode_putfh(xdr, args->fh, &hdr);
2236 encode_open_confirm(xdr, args, &hdr);
2237 encode_nops(&hdr);
2238 }
2239
2240 /*
2241 * Encode an OPEN request with no attributes.
2242 */
2243 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2244 struct xdr_stream *xdr,
2245 struct nfs_openargs *args)
2246 {
2247 struct compound_hdr hdr = {
2248 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2249 };
2250
2251 encode_compound_hdr(xdr, req, &hdr);
2252 encode_sequence(xdr, &args->seq_args, &hdr);
2253 encode_putfh(xdr, args->fh, &hdr);
2254 encode_open(xdr, args, &hdr);
2255 encode_getfattr(xdr, args->bitmask, &hdr);
2256 encode_nops(&hdr);
2257 }
2258
2259 /*
2260 * Encode an OPEN_DOWNGRADE request
2261 */
2262 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2263 struct xdr_stream *xdr,
2264 struct nfs_closeargs *args)
2265 {
2266 struct compound_hdr hdr = {
2267 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2268 };
2269
2270 encode_compound_hdr(xdr, req, &hdr);
2271 encode_sequence(xdr, &args->seq_args, &hdr);
2272 encode_putfh(xdr, args->fh, &hdr);
2273 encode_open_downgrade(xdr, args, &hdr);
2274 encode_getfattr(xdr, args->bitmask, &hdr);
2275 encode_nops(&hdr);
2276 }
2277
2278 /*
2279 * Encode a LOCK request
2280 */
2281 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2282 struct nfs_lock_args *args)
2283 {
2284 struct compound_hdr hdr = {
2285 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2286 };
2287
2288 encode_compound_hdr(xdr, req, &hdr);
2289 encode_sequence(xdr, &args->seq_args, &hdr);
2290 encode_putfh(xdr, args->fh, &hdr);
2291 encode_lock(xdr, args, &hdr);
2292 encode_nops(&hdr);
2293 }
2294
2295 /*
2296 * Encode a LOCKT request
2297 */
2298 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2299 struct nfs_lockt_args *args)
2300 {
2301 struct compound_hdr hdr = {
2302 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2303 };
2304
2305 encode_compound_hdr(xdr, req, &hdr);
2306 encode_sequence(xdr, &args->seq_args, &hdr);
2307 encode_putfh(xdr, args->fh, &hdr);
2308 encode_lockt(xdr, args, &hdr);
2309 encode_nops(&hdr);
2310 }
2311
2312 /*
2313 * Encode a LOCKU request
2314 */
2315 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2316 struct nfs_locku_args *args)
2317 {
2318 struct compound_hdr hdr = {
2319 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2320 };
2321
2322 encode_compound_hdr(xdr, req, &hdr);
2323 encode_sequence(xdr, &args->seq_args, &hdr);
2324 encode_putfh(xdr, args->fh, &hdr);
2325 encode_locku(xdr, args, &hdr);
2326 encode_nops(&hdr);
2327 }
2328
2329 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2330 struct xdr_stream *xdr,
2331 struct nfs_release_lockowner_args *args)
2332 {
2333 struct compound_hdr hdr = {
2334 .minorversion = 0,
2335 };
2336
2337 encode_compound_hdr(xdr, req, &hdr);
2338 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2339 encode_nops(&hdr);
2340 }
2341
2342 /*
2343 * Encode a READLINK request
2344 */
2345 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2346 const struct nfs4_readlink *args)
2347 {
2348 struct compound_hdr hdr = {
2349 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2350 };
2351
2352 encode_compound_hdr(xdr, req, &hdr);
2353 encode_sequence(xdr, &args->seq_args, &hdr);
2354 encode_putfh(xdr, args->fh, &hdr);
2355 encode_readlink(xdr, args, req, &hdr);
2356
2357 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2358 args->pgbase, args->pglen);
2359 encode_nops(&hdr);
2360 }
2361
2362 /*
2363 * Encode a READDIR request
2364 */
2365 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2366 const struct nfs4_readdir_arg *args)
2367 {
2368 struct compound_hdr hdr = {
2369 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2370 };
2371
2372 encode_compound_hdr(xdr, req, &hdr);
2373 encode_sequence(xdr, &args->seq_args, &hdr);
2374 encode_putfh(xdr, args->fh, &hdr);
2375 encode_readdir(xdr, args, req, &hdr);
2376
2377 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2378 args->pgbase, args->count);
2379 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2380 __func__, hdr.replen << 2, args->pages,
2381 args->pgbase, args->count);
2382 encode_nops(&hdr);
2383 }
2384
2385 /*
2386 * Encode a READ request
2387 */
2388 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2389 struct nfs_readargs *args)
2390 {
2391 struct compound_hdr hdr = {
2392 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2393 };
2394
2395 encode_compound_hdr(xdr, req, &hdr);
2396 encode_sequence(xdr, &args->seq_args, &hdr);
2397 encode_putfh(xdr, args->fh, &hdr);
2398 encode_read(xdr, args, &hdr);
2399
2400 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2401 args->pages, args->pgbase, args->count);
2402 req->rq_rcv_buf.flags |= XDRBUF_READ;
2403 encode_nops(&hdr);
2404 }
2405
2406 /*
2407 * Encode an SETATTR request
2408 */
2409 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2410 struct nfs_setattrargs *args)
2411 {
2412 struct compound_hdr hdr = {
2413 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2414 };
2415
2416 encode_compound_hdr(xdr, req, &hdr);
2417 encode_sequence(xdr, &args->seq_args, &hdr);
2418 encode_putfh(xdr, args->fh, &hdr);
2419 encode_setattr(xdr, args, args->server, &hdr);
2420 encode_getfattr(xdr, args->bitmask, &hdr);
2421 encode_nops(&hdr);
2422 }
2423
2424 /*
2425 * Encode a GETACL request
2426 */
2427 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2428 struct nfs_getaclargs *args)
2429 {
2430 struct compound_hdr hdr = {
2431 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2432 };
2433 uint32_t replen;
2434
2435 encode_compound_hdr(xdr, req, &hdr);
2436 encode_sequence(xdr, &args->seq_args, &hdr);
2437 encode_putfh(xdr, args->fh, &hdr);
2438 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2439 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2440
2441 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2442 args->acl_pages, args->acl_pgbase, args->acl_len);
2443
2444 encode_nops(&hdr);
2445 }
2446
2447 /*
2448 * Encode a WRITE request
2449 */
2450 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2451 struct nfs_writeargs *args)
2452 {
2453 struct compound_hdr hdr = {
2454 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2455 };
2456
2457 encode_compound_hdr(xdr, req, &hdr);
2458 encode_sequence(xdr, &args->seq_args, &hdr);
2459 encode_putfh(xdr, args->fh, &hdr);
2460 encode_write(xdr, args, &hdr);
2461 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2462 if (args->bitmask)
2463 encode_getfattr(xdr, args->bitmask, &hdr);
2464 encode_nops(&hdr);
2465 }
2466
2467 /*
2468 * a COMMIT request
2469 */
2470 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2471 struct nfs_commitargs *args)
2472 {
2473 struct compound_hdr hdr = {
2474 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2475 };
2476
2477 encode_compound_hdr(xdr, req, &hdr);
2478 encode_sequence(xdr, &args->seq_args, &hdr);
2479 encode_putfh(xdr, args->fh, &hdr);
2480 encode_commit(xdr, args, &hdr);
2481 encode_nops(&hdr);
2482 }
2483
2484 /*
2485 * FSINFO request
2486 */
2487 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2488 struct nfs4_fsinfo_arg *args)
2489 {
2490 struct compound_hdr hdr = {
2491 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2492 };
2493
2494 encode_compound_hdr(xdr, req, &hdr);
2495 encode_sequence(xdr, &args->seq_args, &hdr);
2496 encode_putfh(xdr, args->fh, &hdr);
2497 encode_fsinfo(xdr, args->bitmask, &hdr);
2498 encode_nops(&hdr);
2499 }
2500
2501 /*
2502 * a PATHCONF request
2503 */
2504 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2505 const struct nfs4_pathconf_arg *args)
2506 {
2507 struct compound_hdr hdr = {
2508 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2509 };
2510
2511 encode_compound_hdr(xdr, req, &hdr);
2512 encode_sequence(xdr, &args->seq_args, &hdr);
2513 encode_putfh(xdr, args->fh, &hdr);
2514 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2515 &hdr);
2516 encode_nops(&hdr);
2517 }
2518
2519 /*
2520 * a STATFS request
2521 */
2522 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2523 const struct nfs4_statfs_arg *args)
2524 {
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2527 };
2528
2529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2533 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2534 encode_nops(&hdr);
2535 }
2536
2537 /*
2538 * GETATTR_BITMAP request
2539 */
2540 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2541 struct xdr_stream *xdr,
2542 struct nfs4_server_caps_arg *args)
2543 {
2544 struct compound_hdr hdr = {
2545 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2546 };
2547
2548 encode_compound_hdr(xdr, req, &hdr);
2549 encode_sequence(xdr, &args->seq_args, &hdr);
2550 encode_putfh(xdr, args->fhandle, &hdr);
2551 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2552 FATTR4_WORD0_FH_EXPIRE_TYPE|
2553 FATTR4_WORD0_LINK_SUPPORT|
2554 FATTR4_WORD0_SYMLINK_SUPPORT|
2555 FATTR4_WORD0_ACLSUPPORT, &hdr);
2556 encode_nops(&hdr);
2557 }
2558
2559 /*
2560 * a RENEW request
2561 */
2562 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2563 struct nfs_client *clp)
2564 {
2565 struct compound_hdr hdr = {
2566 .nops = 0,
2567 };
2568
2569 encode_compound_hdr(xdr, req, &hdr);
2570 encode_renew(xdr, clp->cl_clientid, &hdr);
2571 encode_nops(&hdr);
2572 }
2573
2574 /*
2575 * a SETCLIENTID request
2576 */
2577 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2578 struct xdr_stream *xdr,
2579 struct nfs4_setclientid *sc)
2580 {
2581 struct compound_hdr hdr = {
2582 .nops = 0,
2583 };
2584
2585 encode_compound_hdr(xdr, req, &hdr);
2586 encode_setclientid(xdr, sc, &hdr);
2587 encode_nops(&hdr);
2588 }
2589
2590 /*
2591 * a SETCLIENTID_CONFIRM request
2592 */
2593 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2594 struct xdr_stream *xdr,
2595 struct nfs4_setclientid_res *arg)
2596 {
2597 struct compound_hdr hdr = {
2598 .nops = 0,
2599 };
2600 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2601
2602 encode_compound_hdr(xdr, req, &hdr);
2603 encode_setclientid_confirm(xdr, arg, &hdr);
2604 encode_putrootfh(xdr, &hdr);
2605 encode_fsinfo(xdr, lease_bitmap, &hdr);
2606 encode_nops(&hdr);
2607 }
2608
2609 /*
2610 * DELEGRETURN request
2611 */
2612 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2613 struct xdr_stream *xdr,
2614 const struct nfs4_delegreturnargs *args)
2615 {
2616 struct compound_hdr hdr = {
2617 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2618 };
2619
2620 encode_compound_hdr(xdr, req, &hdr);
2621 encode_sequence(xdr, &args->seq_args, &hdr);
2622 encode_putfh(xdr, args->fhandle, &hdr);
2623 encode_getfattr(xdr, args->bitmask, &hdr);
2624 encode_delegreturn(xdr, args->stateid, &hdr);
2625 encode_nops(&hdr);
2626 }
2627
2628 /*
2629 * Encode FS_LOCATIONS request
2630 */
2631 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2632 struct xdr_stream *xdr,
2633 struct nfs4_fs_locations_arg *args)
2634 {
2635 struct compound_hdr hdr = {
2636 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2637 };
2638 uint32_t replen;
2639
2640 encode_compound_hdr(xdr, req, &hdr);
2641 encode_sequence(xdr, &args->seq_args, &hdr);
2642 encode_putfh(xdr, args->dir_fh, &hdr);
2643 encode_lookup(xdr, args->name, &hdr);
2644 replen = hdr.replen; /* get the attribute into args->page */
2645 encode_fs_locations(xdr, args->bitmask, &hdr);
2646
2647 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2648 0, PAGE_SIZE);
2649 encode_nops(&hdr);
2650 }
2651
2652 /*
2653 * Encode SECINFO request
2654 */
2655 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2656 struct xdr_stream *xdr,
2657 struct nfs4_secinfo_arg *args)
2658 {
2659 struct compound_hdr hdr = {
2660 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2661 };
2662
2663 encode_compound_hdr(xdr, req, &hdr);
2664 encode_sequence(xdr, &args->seq_args, &hdr);
2665 encode_putfh(xdr, args->dir_fh, &hdr);
2666 encode_secinfo(xdr, args->name, &hdr);
2667 encode_nops(&hdr);
2668 }
2669
2670 #if defined(CONFIG_NFS_V4_1)
2671 /*
2672 * BIND_CONN_TO_SESSION request
2673 */
2674 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2675 struct xdr_stream *xdr,
2676 struct nfs_client *clp)
2677 {
2678 struct compound_hdr hdr = {
2679 .minorversion = clp->cl_mvops->minor_version,
2680 };
2681
2682 encode_compound_hdr(xdr, req, &hdr);
2683 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2684 encode_nops(&hdr);
2685 }
2686
2687 /*
2688 * EXCHANGE_ID request
2689 */
2690 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2691 struct xdr_stream *xdr,
2692 struct nfs41_exchange_id_args *args)
2693 {
2694 struct compound_hdr hdr = {
2695 .minorversion = args->client->cl_mvops->minor_version,
2696 };
2697
2698 encode_compound_hdr(xdr, req, &hdr);
2699 encode_exchange_id(xdr, args, &hdr);
2700 encode_nops(&hdr);
2701 }
2702
2703 /*
2704 * a CREATE_SESSION request
2705 */
2706 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2707 struct xdr_stream *xdr,
2708 struct nfs41_create_session_args *args)
2709 {
2710 struct compound_hdr hdr = {
2711 .minorversion = args->client->cl_mvops->minor_version,
2712 };
2713
2714 encode_compound_hdr(xdr, req, &hdr);
2715 encode_create_session(xdr, args, &hdr);
2716 encode_nops(&hdr);
2717 }
2718
2719 /*
2720 * a DESTROY_SESSION request
2721 */
2722 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2723 struct xdr_stream *xdr,
2724 struct nfs4_session *session)
2725 {
2726 struct compound_hdr hdr = {
2727 .minorversion = session->clp->cl_mvops->minor_version,
2728 };
2729
2730 encode_compound_hdr(xdr, req, &hdr);
2731 encode_destroy_session(xdr, session, &hdr);
2732 encode_nops(&hdr);
2733 }
2734
2735 /*
2736 * a DESTROY_CLIENTID request
2737 */
2738 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2739 struct xdr_stream *xdr,
2740 struct nfs_client *clp)
2741 {
2742 struct compound_hdr hdr = {
2743 .minorversion = clp->cl_mvops->minor_version,
2744 };
2745
2746 encode_compound_hdr(xdr, req, &hdr);
2747 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2748 encode_nops(&hdr);
2749 }
2750
2751 /*
2752 * a SEQUENCE request
2753 */
2754 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2755 struct nfs4_sequence_args *args)
2756 {
2757 struct compound_hdr hdr = {
2758 .minorversion = nfs4_xdr_minorversion(args),
2759 };
2760
2761 encode_compound_hdr(xdr, req, &hdr);
2762 encode_sequence(xdr, args, &hdr);
2763 encode_nops(&hdr);
2764 }
2765
2766 /*
2767 * a GET_LEASE_TIME request
2768 */
2769 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2770 struct xdr_stream *xdr,
2771 struct nfs4_get_lease_time_args *args)
2772 {
2773 struct compound_hdr hdr = {
2774 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2775 };
2776 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2777
2778 encode_compound_hdr(xdr, req, &hdr);
2779 encode_sequence(xdr, &args->la_seq_args, &hdr);
2780 encode_putrootfh(xdr, &hdr);
2781 encode_fsinfo(xdr, lease_bitmap, &hdr);
2782 encode_nops(&hdr);
2783 }
2784
2785 /*
2786 * a RECLAIM_COMPLETE request
2787 */
2788 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2789 struct xdr_stream *xdr,
2790 struct nfs41_reclaim_complete_args *args)
2791 {
2792 struct compound_hdr hdr = {
2793 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2794 };
2795
2796 encode_compound_hdr(xdr, req, &hdr);
2797 encode_sequence(xdr, &args->seq_args, &hdr);
2798 encode_reclaim_complete(xdr, args, &hdr);
2799 encode_nops(&hdr);
2800 }
2801
2802 /*
2803 * Encode GETDEVICELIST request
2804 */
2805 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2806 struct xdr_stream *xdr,
2807 struct nfs4_getdevicelist_args *args)
2808 {
2809 struct compound_hdr hdr = {
2810 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2811 };
2812
2813 encode_compound_hdr(xdr, req, &hdr);
2814 encode_sequence(xdr, &args->seq_args, &hdr);
2815 encode_putfh(xdr, args->fh, &hdr);
2816 encode_getdevicelist(xdr, args, &hdr);
2817 encode_nops(&hdr);
2818 }
2819
2820 /*
2821 * Encode GETDEVICEINFO request
2822 */
2823 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2824 struct xdr_stream *xdr,
2825 struct nfs4_getdeviceinfo_args *args)
2826 {
2827 struct compound_hdr hdr = {
2828 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2829 };
2830
2831 encode_compound_hdr(xdr, req, &hdr);
2832 encode_sequence(xdr, &args->seq_args, &hdr);
2833 encode_getdeviceinfo(xdr, args, &hdr);
2834
2835 /* set up reply kvec. Subtract notification bitmap max size (2)
2836 * so that notification bitmap is put in xdr_buf tail */
2837 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2838 args->pdev->pages, args->pdev->pgbase,
2839 args->pdev->pglen);
2840
2841 encode_nops(&hdr);
2842 }
2843
2844 /*
2845 * Encode LAYOUTGET request
2846 */
2847 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2848 struct xdr_stream *xdr,
2849 struct nfs4_layoutget_args *args)
2850 {
2851 struct compound_hdr hdr = {
2852 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2853 };
2854
2855 encode_compound_hdr(xdr, req, &hdr);
2856 encode_sequence(xdr, &args->seq_args, &hdr);
2857 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2858 encode_layoutget(xdr, args, &hdr);
2859
2860 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2861 args->layout.pages, 0, args->layout.pglen);
2862
2863 encode_nops(&hdr);
2864 }
2865
2866 /*
2867 * Encode LAYOUTCOMMIT request
2868 */
2869 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2870 struct xdr_stream *xdr,
2871 struct nfs4_layoutcommit_args *args)
2872 {
2873 struct nfs4_layoutcommit_data *data =
2874 container_of(args, struct nfs4_layoutcommit_data, args);
2875 struct compound_hdr hdr = {
2876 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2877 };
2878
2879 encode_compound_hdr(xdr, req, &hdr);
2880 encode_sequence(xdr, &args->seq_args, &hdr);
2881 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2882 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2883 encode_getfattr(xdr, args->bitmask, &hdr);
2884 encode_nops(&hdr);
2885 }
2886
2887 /*
2888 * Encode LAYOUTRETURN request
2889 */
2890 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2891 struct xdr_stream *xdr,
2892 struct nfs4_layoutreturn_args *args)
2893 {
2894 struct compound_hdr hdr = {
2895 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2896 };
2897
2898 encode_compound_hdr(xdr, req, &hdr);
2899 encode_sequence(xdr, &args->seq_args, &hdr);
2900 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2901 encode_layoutreturn(xdr, args, &hdr);
2902 encode_nops(&hdr);
2903 }
2904
2905 /*
2906 * Encode SECINFO_NO_NAME request
2907 */
2908 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2909 struct xdr_stream *xdr,
2910 struct nfs41_secinfo_no_name_args *args)
2911 {
2912 struct compound_hdr hdr = {
2913 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2914 };
2915
2916 encode_compound_hdr(xdr, req, &hdr);
2917 encode_sequence(xdr, &args->seq_args, &hdr);
2918 encode_putrootfh(xdr, &hdr);
2919 encode_secinfo_no_name(xdr, args, &hdr);
2920 encode_nops(&hdr);
2921 return 0;
2922 }
2923
2924 /*
2925 * Encode TEST_STATEID request
2926 */
2927 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2928 struct xdr_stream *xdr,
2929 struct nfs41_test_stateid_args *args)
2930 {
2931 struct compound_hdr hdr = {
2932 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2933 };
2934
2935 encode_compound_hdr(xdr, req, &hdr);
2936 encode_sequence(xdr, &args->seq_args, &hdr);
2937 encode_test_stateid(xdr, args, &hdr);
2938 encode_nops(&hdr);
2939 }
2940
2941 /*
2942 * Encode FREE_STATEID request
2943 */
2944 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2945 struct xdr_stream *xdr,
2946 struct nfs41_free_stateid_args *args)
2947 {
2948 struct compound_hdr hdr = {
2949 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2950 };
2951
2952 encode_compound_hdr(xdr, req, &hdr);
2953 encode_sequence(xdr, &args->seq_args, &hdr);
2954 encode_free_stateid(xdr, args, &hdr);
2955 encode_nops(&hdr);
2956 }
2957 #endif /* CONFIG_NFS_V4_1 */
2958
2959 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2960 {
2961 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2962 "Remaining buffer length is %tu words.\n",
2963 func, xdr->end - xdr->p);
2964 }
2965
2966 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2967 {
2968 __be32 *p;
2969
2970 p = xdr_inline_decode(xdr, 4);
2971 if (unlikely(!p))
2972 goto out_overflow;
2973 *len = be32_to_cpup(p);
2974 p = xdr_inline_decode(xdr, *len);
2975 if (unlikely(!p))
2976 goto out_overflow;
2977 *string = (char *)p;
2978 return 0;
2979 out_overflow:
2980 print_overflow_msg(__func__, xdr);
2981 return -EIO;
2982 }
2983
2984 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2985 {
2986 __be32 *p;
2987
2988 p = xdr_inline_decode(xdr, 8);
2989 if (unlikely(!p))
2990 goto out_overflow;
2991 hdr->status = be32_to_cpup(p++);
2992 hdr->taglen = be32_to_cpup(p);
2993
2994 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2995 if (unlikely(!p))
2996 goto out_overflow;
2997 hdr->tag = (char *)p;
2998 p += XDR_QUADLEN(hdr->taglen);
2999 hdr->nops = be32_to_cpup(p);
3000 if (unlikely(hdr->nops < 1))
3001 return nfs4_stat_to_errno(hdr->status);
3002 return 0;
3003 out_overflow:
3004 print_overflow_msg(__func__, xdr);
3005 return -EIO;
3006 }
3007
3008 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3009 {
3010 __be32 *p;
3011 uint32_t opnum;
3012 int32_t nfserr;
3013
3014 p = xdr_inline_decode(xdr, 8);
3015 if (unlikely(!p))
3016 goto out_overflow;
3017 opnum = be32_to_cpup(p++);
3018 if (opnum != expected) {
3019 dprintk("nfs: Server returned operation"
3020 " %d but we issued a request for %d\n",
3021 opnum, expected);
3022 return -EIO;
3023 }
3024 nfserr = be32_to_cpup(p);
3025 if (nfserr != NFS_OK)
3026 return nfs4_stat_to_errno(nfserr);
3027 return 0;
3028 out_overflow:
3029 print_overflow_msg(__func__, xdr);
3030 return -EIO;
3031 }
3032
3033 /* Dummy routine */
3034 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3035 {
3036 __be32 *p;
3037 unsigned int strlen;
3038 char *str;
3039
3040 p = xdr_inline_decode(xdr, 12);
3041 if (likely(p))
3042 return decode_opaque_inline(xdr, &strlen, &str);
3043 print_overflow_msg(__func__, xdr);
3044 return -EIO;
3045 }
3046
3047 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3048 {
3049 uint32_t bmlen;
3050 __be32 *p;
3051
3052 p = xdr_inline_decode(xdr, 4);
3053 if (unlikely(!p))
3054 goto out_overflow;
3055 bmlen = be32_to_cpup(p);
3056
3057 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3058 p = xdr_inline_decode(xdr, (bmlen << 2));
3059 if (unlikely(!p))
3060 goto out_overflow;
3061 if (bmlen > 0) {
3062 bitmap[0] = be32_to_cpup(p++);
3063 if (bmlen > 1) {
3064 bitmap[1] = be32_to_cpup(p++);
3065 if (bmlen > 2)
3066 bitmap[2] = be32_to_cpup(p);
3067 }
3068 }
3069 return 0;
3070 out_overflow:
3071 print_overflow_msg(__func__, xdr);
3072 return -EIO;
3073 }
3074
3075 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3076 {
3077 __be32 *p;
3078
3079 p = xdr_inline_decode(xdr, 4);
3080 if (unlikely(!p))
3081 goto out_overflow;
3082 *attrlen = be32_to_cpup(p);
3083 *savep = xdr_stream_pos(xdr);
3084 return 0;
3085 out_overflow:
3086 print_overflow_msg(__func__, xdr);
3087 return -EIO;
3088 }
3089
3090 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3091 {
3092 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3093 int ret;
3094 ret = decode_attr_bitmap(xdr, bitmask);
3095 if (unlikely(ret < 0))
3096 return ret;
3097 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3098 } else
3099 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3100 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3101 bitmask[0], bitmask[1], bitmask[2]);
3102 return 0;
3103 }
3104
3105 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3106 {
3107 __be32 *p;
3108 int ret = 0;
3109
3110 *type = 0;
3111 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3112 return -EIO;
3113 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3114 p = xdr_inline_decode(xdr, 4);
3115 if (unlikely(!p))
3116 goto out_overflow;
3117 *type = be32_to_cpup(p);
3118 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3119 dprintk("%s: bad type %d\n", __func__, *type);
3120 return -EIO;
3121 }
3122 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3123 ret = NFS_ATTR_FATTR_TYPE;
3124 }
3125 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3126 return ret;
3127 out_overflow:
3128 print_overflow_msg(__func__, xdr);
3129 return -EIO;
3130 }
3131
3132 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3133 uint32_t *bitmap, uint32_t *type)
3134 {
3135 __be32 *p;
3136
3137 *type = 0;
3138 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3139 return -EIO;
3140 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3141 p = xdr_inline_decode(xdr, 4);
3142 if (unlikely(!p))
3143 goto out_overflow;
3144 *type = be32_to_cpup(p);
3145 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3146 }
3147 dprintk("%s: expire type=0x%x\n", __func__, *type);
3148 return 0;
3149 out_overflow:
3150 print_overflow_msg(__func__, xdr);
3151 return -EIO;
3152 }
3153
3154 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3155 {
3156 __be32 *p;
3157 int ret = 0;
3158
3159 *change = 0;
3160 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3161 return -EIO;
3162 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3163 p = xdr_inline_decode(xdr, 8);
3164 if (unlikely(!p))
3165 goto out_overflow;
3166 xdr_decode_hyper(p, change);
3167 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3168 ret = NFS_ATTR_FATTR_CHANGE;
3169 }
3170 dprintk("%s: change attribute=%Lu\n", __func__,
3171 (unsigned long long)*change);
3172 return ret;
3173 out_overflow:
3174 print_overflow_msg(__func__, xdr);
3175 return -EIO;
3176 }
3177
3178 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3179 {
3180 __be32 *p;
3181 int ret = 0;
3182
3183 *size = 0;
3184 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3185 return -EIO;
3186 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3187 p = xdr_inline_decode(xdr, 8);
3188 if (unlikely(!p))
3189 goto out_overflow;
3190 xdr_decode_hyper(p, size);
3191 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3192 ret = NFS_ATTR_FATTR_SIZE;
3193 }
3194 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3195 return ret;
3196 out_overflow:
3197 print_overflow_msg(__func__, xdr);
3198 return -EIO;
3199 }
3200
3201 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3202 {
3203 __be32 *p;
3204
3205 *res = 0;
3206 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3207 return -EIO;
3208 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3209 p = xdr_inline_decode(xdr, 4);
3210 if (unlikely(!p))
3211 goto out_overflow;
3212 *res = be32_to_cpup(p);
3213 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3214 }
3215 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3216 return 0;
3217 out_overflow:
3218 print_overflow_msg(__func__, xdr);
3219 return -EIO;
3220 }
3221
3222 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3223 {
3224 __be32 *p;
3225
3226 *res = 0;
3227 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3228 return -EIO;
3229 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3230 p = xdr_inline_decode(xdr, 4);
3231 if (unlikely(!p))
3232 goto out_overflow;
3233 *res = be32_to_cpup(p);
3234 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3235 }
3236 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3237 return 0;
3238 out_overflow:
3239 print_overflow_msg(__func__, xdr);
3240 return -EIO;
3241 }
3242
3243 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3244 {
3245 __be32 *p;
3246 int ret = 0;
3247
3248 fsid->major = 0;
3249 fsid->minor = 0;
3250 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3251 return -EIO;
3252 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3253 p = xdr_inline_decode(xdr, 16);
3254 if (unlikely(!p))
3255 goto out_overflow;
3256 p = xdr_decode_hyper(p, &fsid->major);
3257 xdr_decode_hyper(p, &fsid->minor);
3258 bitmap[0] &= ~FATTR4_WORD0_FSID;
3259 ret = NFS_ATTR_FATTR_FSID;
3260 }
3261 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3262 (unsigned long long)fsid->major,
3263 (unsigned long long)fsid->minor);
3264 return ret;
3265 out_overflow:
3266 print_overflow_msg(__func__, xdr);
3267 return -EIO;
3268 }
3269
3270 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3271 {
3272 __be32 *p;
3273
3274 *res = 60;
3275 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3276 return -EIO;
3277 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3278 p = xdr_inline_decode(xdr, 4);
3279 if (unlikely(!p))
3280 goto out_overflow;
3281 *res = be32_to_cpup(p);
3282 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3283 }
3284 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3285 return 0;
3286 out_overflow:
3287 print_overflow_msg(__func__, xdr);
3288 return -EIO;
3289 }
3290
3291 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3292 {
3293 __be32 *p;
3294
3295 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3296 return -EIO;
3297 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3298 p = xdr_inline_decode(xdr, 4);
3299 if (unlikely(!p))
3300 goto out_overflow;
3301 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3302 *res = -be32_to_cpup(p);
3303 }
3304 return 0;
3305 out_overflow:
3306 print_overflow_msg(__func__, xdr);
3307 return -EIO;
3308 }
3309
3310 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3311 {
3312 __be32 *p;
3313 int len;
3314
3315 if (fh != NULL)
3316 memset(fh, 0, sizeof(*fh));
3317
3318 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3319 return -EIO;
3320 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3321 p = xdr_inline_decode(xdr, 4);
3322 if (unlikely(!p))
3323 goto out_overflow;
3324 len = be32_to_cpup(p);
3325 if (len > NFS4_FHSIZE)
3326 return -EIO;
3327 p = xdr_inline_decode(xdr, len);
3328 if (unlikely(!p))
3329 goto out_overflow;
3330 if (fh != NULL) {
3331 memcpy(fh->data, p, len);
3332 fh->size = len;
3333 }
3334 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3335 }
3336 return 0;
3337 out_overflow:
3338 print_overflow_msg(__func__, xdr);
3339 return -EIO;
3340 }
3341
3342 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3343 {
3344 __be32 *p;
3345
3346 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3347 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3348 return -EIO;
3349 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3350 p = xdr_inline_decode(xdr, 4);
3351 if (unlikely(!p))
3352 goto out_overflow;
3353 *res = be32_to_cpup(p);
3354 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3355 }
3356 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3357 return 0;
3358 out_overflow:
3359 print_overflow_msg(__func__, xdr);
3360 return -EIO;
3361 }
3362
3363 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3364 {
3365 __be32 *p;
3366 int ret = 0;
3367
3368 *fileid = 0;
3369 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3370 return -EIO;
3371 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3372 p = xdr_inline_decode(xdr, 8);
3373 if (unlikely(!p))
3374 goto out_overflow;
3375 xdr_decode_hyper(p, fileid);
3376 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3377 ret = NFS_ATTR_FATTR_FILEID;
3378 }
3379 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3380 return ret;
3381 out_overflow:
3382 print_overflow_msg(__func__, xdr);
3383 return -EIO;
3384 }
3385
3386 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3387 {
3388 __be32 *p;
3389 int ret = 0;
3390
3391 *fileid = 0;
3392 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3393 return -EIO;
3394 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3395 p = xdr_inline_decode(xdr, 8);
3396 if (unlikely(!p))
3397 goto out_overflow;
3398 xdr_decode_hyper(p, fileid);
3399 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3400 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3401 }
3402 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3403 return ret;
3404 out_overflow:
3405 print_overflow_msg(__func__, xdr);
3406 return -EIO;
3407 }
3408
3409 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3410 {
3411 __be32 *p;
3412 int status = 0;
3413
3414 *res = 0;
3415 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3416 return -EIO;
3417 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3418 p = xdr_inline_decode(xdr, 8);
3419 if (unlikely(!p))
3420 goto out_overflow;
3421 xdr_decode_hyper(p, res);
3422 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3423 }
3424 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3425 return status;
3426 out_overflow:
3427 print_overflow_msg(__func__, xdr);
3428 return -EIO;
3429 }
3430
3431 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3432 {
3433 __be32 *p;
3434 int status = 0;
3435
3436 *res = 0;
3437 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3438 return -EIO;
3439 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3440 p = xdr_inline_decode(xdr, 8);
3441 if (unlikely(!p))
3442 goto out_overflow;
3443 xdr_decode_hyper(p, res);
3444 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3445 }
3446 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3447 return status;
3448 out_overflow:
3449 print_overflow_msg(__func__, xdr);
3450 return -EIO;
3451 }
3452
3453 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3454 {
3455 __be32 *p;
3456 int status = 0;
3457
3458 *res = 0;
3459 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3460 return -EIO;
3461 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3462 p = xdr_inline_decode(xdr, 8);
3463 if (unlikely(!p))
3464 goto out_overflow;
3465 xdr_decode_hyper(p, res);
3466 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3467 }
3468 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3469 return status;
3470 out_overflow:
3471 print_overflow_msg(__func__, xdr);
3472 return -EIO;
3473 }
3474
3475 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3476 {
3477 u32 n;
3478 __be32 *p;
3479 int status = 0;
3480
3481 p = xdr_inline_decode(xdr, 4);
3482 if (unlikely(!p))
3483 goto out_overflow;
3484 n = be32_to_cpup(p);
3485 if (n == 0)
3486 goto root_path;
3487 dprintk("pathname4: ");
3488 path->ncomponents = 0;
3489 while (path->ncomponents < n) {
3490 struct nfs4_string *component = &path->components[path->ncomponents];
3491 status = decode_opaque_inline(xdr, &component->len, &component->data);
3492 if (unlikely(status != 0))
3493 goto out_eio;
3494 ifdebug (XDR)
3495 pr_cont("%s%.*s ",
3496 (path->ncomponents != n ? "/ " : ""),
3497 component->len, component->data);
3498 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3499 path->ncomponents++;
3500 else {
3501 dprintk("cannot parse %d components in path\n", n);
3502 goto out_eio;
3503 }
3504 }
3505 out:
3506 return status;
3507 root_path:
3508 /* a root pathname is sent as a zero component4 */
3509 path->ncomponents = 1;
3510 path->components[0].len=0;
3511 path->components[0].data=NULL;
3512 dprintk("pathname4: /\n");
3513 goto out;
3514 out_eio:
3515 dprintk(" status %d", status);
3516 status = -EIO;
3517 goto out;
3518 out_overflow:
3519 print_overflow_msg(__func__, xdr);
3520 return -EIO;
3521 }
3522
3523 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3524 {
3525 int n;
3526 __be32 *p;
3527 int status = -EIO;
3528
3529 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3530 goto out;
3531 status = 0;
3532 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3533 goto out;
3534 status = -EIO;
3535 /* Ignore borken servers that return unrequested attrs */
3536 if (unlikely(res == NULL))
3537 goto out;
3538 dprintk("%s: fsroot:\n", __func__);
3539 status = decode_pathname(xdr, &res->fs_path);
3540 if (unlikely(status != 0))
3541 goto out;
3542 p = xdr_inline_decode(xdr, 4);
3543 if (unlikely(!p))
3544 goto out_overflow;
3545 n = be32_to_cpup(p);
3546 if (n <= 0)
3547 goto out_eio;
3548 res->nlocations = 0;
3549 while (res->nlocations < n) {
3550 u32 m;
3551 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
3552
3553 p = xdr_inline_decode(xdr, 4);
3554 if (unlikely(!p))
3555 goto out_overflow;
3556 m = be32_to_cpup(p);
3557
3558 loc->nservers = 0;
3559 dprintk("%s: servers:\n", __func__);
3560 while (loc->nservers < m) {
3561 struct nfs4_string *server = &loc->servers[loc->nservers];
3562 status = decode_opaque_inline(xdr, &server->len, &server->data);
3563 if (unlikely(status != 0))
3564 goto out_eio;
3565 dprintk("%s ", server->data);
3566 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3567 loc->nservers++;
3568 else {
3569 unsigned int i;
3570 dprintk("%s: using first %u of %u servers "
3571 "returned for location %u\n",
3572 __func__,
3573 NFS4_FS_LOCATION_MAXSERVERS,
3574 m, res->nlocations);
3575 for (i = loc->nservers; i < m; i++) {
3576 unsigned int len;
3577 char *data;
3578 status = decode_opaque_inline(xdr, &len, &data);
3579 if (unlikely(status != 0))
3580 goto out_eio;
3581 }
3582 }
3583 }
3584 status = decode_pathname(xdr, &loc->rootpath);
3585 if (unlikely(status != 0))
3586 goto out_eio;
3587 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
3588 res->nlocations++;
3589 }
3590 if (res->nlocations != 0)
3591 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3592 out:
3593 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3594 return status;
3595 out_overflow:
3596 print_overflow_msg(__func__, xdr);
3597 out_eio:
3598 status = -EIO;
3599 goto out;
3600 }
3601
3602 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3603 {
3604 __be32 *p;
3605 int status = 0;
3606
3607 *res = 0;
3608 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3609 return -EIO;
3610 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3611 p = xdr_inline_decode(xdr, 8);
3612 if (unlikely(!p))
3613 goto out_overflow;
3614 xdr_decode_hyper(p, res);
3615 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3616 }
3617 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3618 return status;
3619 out_overflow:
3620 print_overflow_msg(__func__, xdr);
3621 return -EIO;
3622 }
3623
3624 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3625 {
3626 __be32 *p;
3627 int status = 0;
3628
3629 *maxlink = 1;
3630 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3631 return -EIO;
3632 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3633 p = xdr_inline_decode(xdr, 4);
3634 if (unlikely(!p))
3635 goto out_overflow;
3636 *maxlink = be32_to_cpup(p);
3637 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3638 }
3639 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3640 return status;
3641 out_overflow:
3642 print_overflow_msg(__func__, xdr);
3643 return -EIO;
3644 }
3645
3646 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3647 {
3648 __be32 *p;
3649 int status = 0;
3650
3651 *maxname = 1024;
3652 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3653 return -EIO;
3654 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3655 p = xdr_inline_decode(xdr, 4);
3656 if (unlikely(!p))
3657 goto out_overflow;
3658 *maxname = be32_to_cpup(p);
3659 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3660 }
3661 dprintk("%s: maxname=%u\n", __func__, *maxname);
3662 return status;
3663 out_overflow:
3664 print_overflow_msg(__func__, xdr);
3665 return -EIO;
3666 }
3667
3668 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3669 {
3670 __be32 *p;
3671 int status = 0;
3672
3673 *res = 1024;
3674 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3675 return -EIO;
3676 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3677 uint64_t maxread;
3678 p = xdr_inline_decode(xdr, 8);
3679 if (unlikely(!p))
3680 goto out_overflow;
3681 xdr_decode_hyper(p, &maxread);
3682 if (maxread > 0x7FFFFFFF)
3683 maxread = 0x7FFFFFFF;
3684 *res = (uint32_t)maxread;
3685 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3686 }
3687 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3688 return status;
3689 out_overflow:
3690 print_overflow_msg(__func__, xdr);
3691 return -EIO;
3692 }
3693
3694 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3695 {
3696 __be32 *p;
3697 int status = 0;
3698
3699 *res = 1024;
3700 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3701 return -EIO;
3702 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3703 uint64_t maxwrite;
3704 p = xdr_inline_decode(xdr, 8);
3705 if (unlikely(!p))
3706 goto out_overflow;
3707 xdr_decode_hyper(p, &maxwrite);
3708 if (maxwrite > 0x7FFFFFFF)
3709 maxwrite = 0x7FFFFFFF;
3710 *res = (uint32_t)maxwrite;
3711 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3712 }
3713 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3714 return status;
3715 out_overflow:
3716 print_overflow_msg(__func__, xdr);
3717 return -EIO;
3718 }
3719
3720 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3721 {
3722 uint32_t tmp;
3723 __be32 *p;
3724 int ret = 0;
3725
3726 *mode = 0;
3727 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3728 return -EIO;
3729 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3730 p = xdr_inline_decode(xdr, 4);
3731 if (unlikely(!p))
3732 goto out_overflow;
3733 tmp = be32_to_cpup(p);
3734 *mode = tmp & ~S_IFMT;
3735 bitmap[1] &= ~FATTR4_WORD1_MODE;
3736 ret = NFS_ATTR_FATTR_MODE;
3737 }
3738 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3739 return ret;
3740 out_overflow:
3741 print_overflow_msg(__func__, xdr);
3742 return -EIO;
3743 }
3744
3745 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3746 {
3747 __be32 *p;
3748 int ret = 0;
3749
3750 *nlink = 1;
3751 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3752 return -EIO;
3753 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3754 p = xdr_inline_decode(xdr, 4);
3755 if (unlikely(!p))
3756 goto out_overflow;
3757 *nlink = be32_to_cpup(p);
3758 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3759 ret = NFS_ATTR_FATTR_NLINK;
3760 }
3761 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3762 return ret;
3763 out_overflow:
3764 print_overflow_msg(__func__, xdr);
3765 return -EIO;
3766 }
3767
3768 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3769 const struct nfs_server *server, uint32_t *uid,
3770 struct nfs4_string *owner_name)
3771 {
3772 uint32_t len;
3773 __be32 *p;
3774 int ret = 0;
3775
3776 *uid = -2;
3777 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3778 return -EIO;
3779 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3780 p = xdr_inline_decode(xdr, 4);
3781 if (unlikely(!p))
3782 goto out_overflow;
3783 len = be32_to_cpup(p);
3784 p = xdr_inline_decode(xdr, len);
3785 if (unlikely(!p))
3786 goto out_overflow;
3787 if (owner_name != NULL) {
3788 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3789 if (owner_name->data != NULL) {
3790 owner_name->len = len;
3791 ret = NFS_ATTR_FATTR_OWNER_NAME;
3792 }
3793 } else if (len < XDR_MAX_NETOBJ) {
3794 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3795 ret = NFS_ATTR_FATTR_OWNER;
3796 else
3797 dprintk("%s: nfs_map_name_to_uid failed!\n",
3798 __func__);
3799 } else
3800 dprintk("%s: name too long (%u)!\n",
3801 __func__, len);
3802 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3803 }
3804 dprintk("%s: uid=%d\n", __func__, (int)*uid);
3805 return ret;
3806 out_overflow:
3807 print_overflow_msg(__func__, xdr);
3808 return -EIO;
3809 }
3810
3811 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3812 const struct nfs_server *server, uint32_t *gid,
3813 struct nfs4_string *group_name)
3814 {
3815 uint32_t len;
3816 __be32 *p;
3817 int ret = 0;
3818
3819 *gid = -2;
3820 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3821 return -EIO;
3822 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3823 p = xdr_inline_decode(xdr, 4);
3824 if (unlikely(!p))
3825 goto out_overflow;
3826 len = be32_to_cpup(p);
3827 p = xdr_inline_decode(xdr, len);
3828 if (unlikely(!p))
3829 goto out_overflow;
3830 if (group_name != NULL) {
3831 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3832 if (group_name->data != NULL) {
3833 group_name->len = len;
3834 ret = NFS_ATTR_FATTR_GROUP_NAME;
3835 }
3836 } else if (len < XDR_MAX_NETOBJ) {
3837 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3838 ret = NFS_ATTR_FATTR_GROUP;
3839 else
3840 dprintk("%s: nfs_map_group_to_gid failed!\n",
3841 __func__);
3842 } else
3843 dprintk("%s: name too long (%u)!\n",
3844 __func__, len);
3845 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3846 }
3847 dprintk("%s: gid=%d\n", __func__, (int)*gid);
3848 return ret;
3849 out_overflow:
3850 print_overflow_msg(__func__, xdr);
3851 return -EIO;
3852 }
3853
3854 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3855 {
3856 uint32_t major = 0, minor = 0;
3857 __be32 *p;
3858 int ret = 0;
3859
3860 *rdev = MKDEV(0,0);
3861 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3862 return -EIO;
3863 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3864 dev_t tmp;
3865
3866 p = xdr_inline_decode(xdr, 8);
3867 if (unlikely(!p))
3868 goto out_overflow;
3869 major = be32_to_cpup(p++);
3870 minor = be32_to_cpup(p);
3871 tmp = MKDEV(major, minor);
3872 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3873 *rdev = tmp;
3874 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3875 ret = NFS_ATTR_FATTR_RDEV;
3876 }
3877 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3878 return ret;
3879 out_overflow:
3880 print_overflow_msg(__func__, xdr);
3881 return -EIO;
3882 }
3883
3884 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3885 {
3886 __be32 *p;
3887 int status = 0;
3888
3889 *res = 0;
3890 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3891 return -EIO;
3892 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3893 p = xdr_inline_decode(xdr, 8);
3894 if (unlikely(!p))
3895 goto out_overflow;
3896 xdr_decode_hyper(p, res);
3897 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3898 }
3899 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3900 return status;
3901 out_overflow:
3902 print_overflow_msg(__func__, xdr);
3903 return -EIO;
3904 }
3905
3906 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3907 {
3908 __be32 *p;
3909 int status = 0;
3910
3911 *res = 0;
3912 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3913 return -EIO;
3914 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3915 p = xdr_inline_decode(xdr, 8);
3916 if (unlikely(!p))
3917 goto out_overflow;
3918 xdr_decode_hyper(p, res);
3919 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3920 }
3921 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3922 return status;
3923 out_overflow:
3924 print_overflow_msg(__func__, xdr);
3925 return -EIO;
3926 }
3927
3928 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3929 {
3930 __be32 *p;
3931 int status = 0;
3932
3933 *res = 0;
3934 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3935 return -EIO;
3936 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3937 p = xdr_inline_decode(xdr, 8);
3938 if (unlikely(!p))
3939 goto out_overflow;
3940 xdr_decode_hyper(p, res);
3941 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3942 }
3943 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3944 return status;
3945 out_overflow:
3946 print_overflow_msg(__func__, xdr);
3947 return -EIO;
3948 }
3949
3950 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3951 {
3952 __be32 *p;
3953 int ret = 0;
3954
3955 *used = 0;
3956 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3957 return -EIO;
3958 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3959 p = xdr_inline_decode(xdr, 8);
3960 if (unlikely(!p))
3961 goto out_overflow;
3962 xdr_decode_hyper(p, used);
3963 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3964 ret = NFS_ATTR_FATTR_SPACE_USED;
3965 }
3966 dprintk("%s: space used=%Lu\n", __func__,
3967 (unsigned long long)*used);
3968 return ret;
3969 out_overflow:
3970 print_overflow_msg(__func__, xdr);
3971 return -EIO;
3972 }
3973
3974 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3975 {
3976 __be32 *p;
3977 uint64_t sec;
3978 uint32_t nsec;
3979
3980 p = xdr_inline_decode(xdr, 12);
3981 if (unlikely(!p))
3982 goto out_overflow;
3983 p = xdr_decode_hyper(p, &sec);
3984 nsec = be32_to_cpup(p);
3985 time->tv_sec = (time_t)sec;
3986 time->tv_nsec = (long)nsec;
3987 return 0;
3988 out_overflow:
3989 print_overflow_msg(__func__, xdr);
3990 return -EIO;
3991 }
3992
3993 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3994 {
3995 int status = 0;
3996
3997 time->tv_sec = 0;
3998 time->tv_nsec = 0;
3999 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4000 return -EIO;
4001 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4002 status = decode_attr_time(xdr, time);
4003 if (status == 0)
4004 status = NFS_ATTR_FATTR_ATIME;
4005 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4006 }
4007 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4008 return status;
4009 }
4010
4011 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4012 {
4013 int status = 0;
4014
4015 time->tv_sec = 0;
4016 time->tv_nsec = 0;
4017 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4018 return -EIO;
4019 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4020 status = decode_attr_time(xdr, time);
4021 if (status == 0)
4022 status = NFS_ATTR_FATTR_CTIME;
4023 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4024 }
4025 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4026 return status;
4027 }
4028
4029 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4030 struct timespec *time)
4031 {
4032 int status = 0;
4033
4034 time->tv_sec = 0;
4035 time->tv_nsec = 0;
4036 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4037 return -EIO;
4038 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4039 status = decode_attr_time(xdr, time);
4040 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4041 }
4042 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4043 (long)time->tv_nsec);
4044 return status;
4045 }
4046
4047 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4048 {
4049 int status = 0;
4050
4051 time->tv_sec = 0;
4052 time->tv_nsec = 0;
4053 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4054 return -EIO;
4055 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4056 status = decode_attr_time(xdr, time);
4057 if (status == 0)
4058 status = NFS_ATTR_FATTR_MTIME;
4059 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4060 }
4061 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4062 return status;
4063 }
4064
4065 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4066 {
4067 unsigned int attrwords = XDR_QUADLEN(attrlen);
4068 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4069
4070 if (unlikely(attrwords != nwords)) {
4071 dprintk("%s: server returned incorrect attribute length: "
4072 "%u %c %u\n",
4073 __func__,
4074 attrwords << 2,
4075 (attrwords < nwords) ? '<' : '>',
4076 nwords << 2);
4077 return -EIO;
4078 }
4079 return 0;
4080 }
4081
4082 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4083 {
4084 __be32 *p;
4085
4086 p = xdr_inline_decode(xdr, 20);
4087 if (unlikely(!p))
4088 goto out_overflow;
4089 cinfo->atomic = be32_to_cpup(p++);
4090 p = xdr_decode_hyper(p, &cinfo->before);
4091 xdr_decode_hyper(p, &cinfo->after);
4092 return 0;
4093 out_overflow:
4094 print_overflow_msg(__func__, xdr);
4095 return -EIO;
4096 }
4097
4098 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
4099 {
4100 __be32 *p;
4101 uint32_t supp, acc;
4102 int status;
4103
4104 status = decode_op_hdr(xdr, OP_ACCESS);
4105 if (status)
4106 return status;
4107 p = xdr_inline_decode(xdr, 8);
4108 if (unlikely(!p))
4109 goto out_overflow;
4110 supp = be32_to_cpup(p++);
4111 acc = be32_to_cpup(p);
4112 access->supported = supp;
4113 access->access = acc;
4114 return 0;
4115 out_overflow:
4116 print_overflow_msg(__func__, xdr);
4117 return -EIO;
4118 }
4119
4120 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4121 {
4122 __be32 *p;
4123
4124 p = xdr_inline_decode(xdr, len);
4125 if (likely(p)) {
4126 memcpy(buf, p, len);
4127 return 0;
4128 }
4129 print_overflow_msg(__func__, xdr);
4130 return -EIO;
4131 }
4132
4133 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4134 {
4135 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4136 }
4137
4138 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4139 {
4140 int status;
4141
4142 status = decode_op_hdr(xdr, OP_CLOSE);
4143 if (status != -EIO)
4144 nfs_increment_open_seqid(status, res->seqid);
4145 if (!status)
4146 status = decode_stateid(xdr, &res->stateid);
4147 return status;
4148 }
4149
4150 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4151 {
4152 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4153 }
4154
4155 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4156 {
4157 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4158 }
4159
4160 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4161 {
4162 int status;
4163
4164 status = decode_op_hdr(xdr, OP_COMMIT);
4165 if (!status)
4166 status = decode_write_verifier(xdr, &res->verf->verifier);
4167 return status;
4168 }
4169
4170 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4171 {
4172 __be32 *p;
4173 uint32_t bmlen;
4174 int status;
4175
4176 status = decode_op_hdr(xdr, OP_CREATE);
4177 if (status)
4178 return status;
4179 if ((status = decode_change_info(xdr, cinfo)))
4180 return status;
4181 p = xdr_inline_decode(xdr, 4);
4182 if (unlikely(!p))
4183 goto out_overflow;
4184 bmlen = be32_to_cpup(p);
4185 p = xdr_inline_decode(xdr, bmlen << 2);
4186 if (likely(p))
4187 return 0;
4188 out_overflow:
4189 print_overflow_msg(__func__, xdr);
4190 return -EIO;
4191 }
4192
4193 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4194 {
4195 unsigned int savep;
4196 uint32_t attrlen, bitmap[3] = {0};
4197 int status;
4198
4199 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4200 goto xdr_error;
4201 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4202 goto xdr_error;
4203 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4204 goto xdr_error;
4205 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4206 goto xdr_error;
4207 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4208 &res->fh_expire_type)) != 0)
4209 goto xdr_error;
4210 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4211 goto xdr_error;
4212 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4213 goto xdr_error;
4214 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4215 goto xdr_error;
4216 status = verify_attr_len(xdr, savep, attrlen);
4217 xdr_error:
4218 dprintk("%s: xdr returned %d!\n", __func__, -status);
4219 return status;
4220 }
4221
4222 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4223 {
4224 unsigned int savep;
4225 uint32_t attrlen, bitmap[3] = {0};
4226 int status;
4227
4228 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4229 goto xdr_error;
4230 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4231 goto xdr_error;
4232 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4233 goto xdr_error;
4234
4235 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4236 goto xdr_error;
4237 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4238 goto xdr_error;
4239 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4240 goto xdr_error;
4241 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4242 goto xdr_error;
4243 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4244 goto xdr_error;
4245 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4246 goto xdr_error;
4247
4248 status = verify_attr_len(xdr, savep, attrlen);
4249 xdr_error:
4250 dprintk("%s: xdr returned %d!\n", __func__, -status);
4251 return status;
4252 }
4253
4254 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4255 {
4256 unsigned int savep;
4257 uint32_t attrlen, bitmap[3] = {0};
4258 int status;
4259
4260 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4261 goto xdr_error;
4262 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4263 goto xdr_error;
4264 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4265 goto xdr_error;
4266
4267 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4268 goto xdr_error;
4269 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4270 goto xdr_error;
4271
4272 status = verify_attr_len(xdr, savep, attrlen);
4273 xdr_error:
4274 dprintk("%s: xdr returned %d!\n", __func__, -status);
4275 return status;
4276 }
4277
4278 static int decode_threshold_hint(struct xdr_stream *xdr,
4279 uint32_t *bitmap,
4280 uint64_t *res,
4281 uint32_t hint_bit)
4282 {
4283 __be32 *p;
4284
4285 *res = 0;
4286 if (likely(bitmap[0] & hint_bit)) {
4287 p = xdr_inline_decode(xdr, 8);
4288 if (unlikely(!p))
4289 goto out_overflow;
4290 xdr_decode_hyper(p, res);
4291 }
4292 return 0;
4293 out_overflow:
4294 print_overflow_msg(__func__, xdr);
4295 return -EIO;
4296 }
4297
4298 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4299 struct nfs4_threshold *res)
4300 {
4301 __be32 *p;
4302 unsigned int savep;
4303 uint32_t bitmap[3] = {0,}, attrlen;
4304 int status;
4305
4306 /* layout type */
4307 p = xdr_inline_decode(xdr, 4);
4308 if (unlikely(!p)) {
4309 print_overflow_msg(__func__, xdr);
4310 return -EIO;
4311 }
4312 res->l_type = be32_to_cpup(p);
4313
4314 /* thi_hintset bitmap */
4315 status = decode_attr_bitmap(xdr, bitmap);
4316 if (status < 0)
4317 goto xdr_error;
4318
4319 /* thi_hintlist length */
4320 status = decode_attr_length(xdr, &attrlen, &savep);
4321 if (status < 0)
4322 goto xdr_error;
4323 /* thi_hintlist */
4324 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4325 if (status < 0)
4326 goto xdr_error;
4327 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4328 if (status < 0)
4329 goto xdr_error;
4330 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4331 THRESHOLD_RD_IO);
4332 if (status < 0)
4333 goto xdr_error;
4334 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4335 THRESHOLD_WR_IO);
4336 if (status < 0)
4337 goto xdr_error;
4338
4339 status = verify_attr_len(xdr, savep, attrlen);
4340 res->bm = bitmap[0];
4341
4342 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4343 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4344 res->wr_io_sz);
4345 xdr_error:
4346 dprintk("%s ret=%d!\n", __func__, status);
4347 return status;
4348 }
4349
4350 /*
4351 * Thresholds on pNFS direct I/O vrs MDS I/O
4352 */
4353 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4354 uint32_t *bitmap,
4355 struct nfs4_threshold *res)
4356 {
4357 __be32 *p;
4358 int status = 0;
4359 uint32_t num;
4360
4361 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4362 return -EIO;
4363 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4364 /* Did the server return an unrequested attribute? */
4365 if (unlikely(res == NULL))
4366 return -EREMOTEIO;
4367 p = xdr_inline_decode(xdr, 4);
4368 if (unlikely(!p))
4369 goto out_overflow;
4370 num = be32_to_cpup(p);
4371 if (num == 0)
4372 return 0;
4373 if (num > 1)
4374 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4375 "drivers per filesystem not supported\n",
4376 __func__);
4377
4378 status = decode_first_threshold_item4(xdr, res);
4379 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4380 }
4381 return status;
4382 out_overflow:
4383 print_overflow_msg(__func__, xdr);
4384 return -EIO;
4385 }
4386
4387 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4388 struct nfs_fattr *fattr, struct nfs_fh *fh,
4389 struct nfs4_fs_locations *fs_loc,
4390 const struct nfs_server *server)
4391 {
4392 int status;
4393 umode_t fmode = 0;
4394 uint32_t type;
4395 int32_t err;
4396
4397 status = decode_attr_type(xdr, bitmap, &type);
4398 if (status < 0)
4399 goto xdr_error;
4400 fattr->mode = 0;
4401 if (status != 0) {
4402 fattr->mode |= nfs_type2fmt[type];
4403 fattr->valid |= status;
4404 }
4405
4406 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4407 if (status < 0)
4408 goto xdr_error;
4409 fattr->valid |= status;
4410
4411 status = decode_attr_size(xdr, bitmap, &fattr->size);
4412 if (status < 0)
4413 goto xdr_error;
4414 fattr->valid |= status;
4415
4416 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4417 if (status < 0)
4418 goto xdr_error;
4419 fattr->valid |= status;
4420
4421 err = 0;
4422 status = decode_attr_error(xdr, bitmap, &err);
4423 if (status < 0)
4424 goto xdr_error;
4425
4426 status = decode_attr_filehandle(xdr, bitmap, fh);
4427 if (status < 0)
4428 goto xdr_error;
4429
4430 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4431 if (status < 0)
4432 goto xdr_error;
4433 fattr->valid |= status;
4434
4435 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4436 if (status < 0)
4437 goto xdr_error;
4438 fattr->valid |= status;
4439
4440 status = decode_attr_mode(xdr, bitmap, &fmode);
4441 if (status < 0)
4442 goto xdr_error;
4443 if (status != 0) {
4444 fattr->mode |= fmode;
4445 fattr->valid |= status;
4446 }
4447
4448 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4449 if (status < 0)
4450 goto xdr_error;
4451 fattr->valid |= status;
4452
4453 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4454 if (status < 0)
4455 goto xdr_error;
4456 fattr->valid |= status;
4457
4458 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4459 if (status < 0)
4460 goto xdr_error;
4461 fattr->valid |= status;
4462
4463 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4464 if (status < 0)
4465 goto xdr_error;
4466 fattr->valid |= status;
4467
4468 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4469 if (status < 0)
4470 goto xdr_error;
4471 fattr->valid |= status;
4472
4473 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4474 if (status < 0)
4475 goto xdr_error;
4476 fattr->valid |= status;
4477
4478 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4479 if (status < 0)
4480 goto xdr_error;
4481 fattr->valid |= status;
4482
4483 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4484 if (status < 0)
4485 goto xdr_error;
4486 fattr->valid |= status;
4487
4488 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4489 if (status < 0)
4490 goto xdr_error;
4491 fattr->valid |= status;
4492
4493 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4494 if (status < 0)
4495 goto xdr_error;
4496
4497 xdr_error:
4498 dprintk("%s: xdr returned %d\n", __func__, -status);
4499 return status;
4500 }
4501
4502 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4503 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4504 const struct nfs_server *server)
4505 {
4506 unsigned int savep;
4507 uint32_t attrlen,
4508 bitmap[3] = {0};
4509 int status;
4510
4511 status = decode_op_hdr(xdr, OP_GETATTR);
4512 if (status < 0)
4513 goto xdr_error;
4514
4515 status = decode_attr_bitmap(xdr, bitmap);
4516 if (status < 0)
4517 goto xdr_error;
4518
4519 status = decode_attr_length(xdr, &attrlen, &savep);
4520 if (status < 0)
4521 goto xdr_error;
4522
4523 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4524 if (status < 0)
4525 goto xdr_error;
4526
4527 status = verify_attr_len(xdr, savep, attrlen);
4528 xdr_error:
4529 dprintk("%s: xdr returned %d\n", __func__, -status);
4530 return status;
4531 }
4532
4533 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4534 const struct nfs_server *server)
4535 {
4536 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4537 }
4538
4539 /*
4540 * Decode potentially multiple layout types. Currently we only support
4541 * one layout driver per file system.
4542 */
4543 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4544 uint32_t *layouttype)
4545 {
4546 uint32_t *p;
4547 int num;
4548
4549 p = xdr_inline_decode(xdr, 4);
4550 if (unlikely(!p))
4551 goto out_overflow;
4552 num = be32_to_cpup(p);
4553
4554 /* pNFS is not supported by the underlying file system */
4555 if (num == 0) {
4556 *layouttype = 0;
4557 return 0;
4558 }
4559 if (num > 1)
4560 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4561 "drivers per filesystem not supported\n", __func__);
4562
4563 /* Decode and set first layout type, move xdr->p past unused types */
4564 p = xdr_inline_decode(xdr, num * 4);
4565 if (unlikely(!p))
4566 goto out_overflow;
4567 *layouttype = be32_to_cpup(p);
4568 return 0;
4569 out_overflow:
4570 print_overflow_msg(__func__, xdr);
4571 return -EIO;
4572 }
4573
4574 /*
4575 * The type of file system exported.
4576 * Note we must ensure that layouttype is set in any non-error case.
4577 */
4578 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4579 uint32_t *layouttype)
4580 {
4581 int status = 0;
4582
4583 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4584 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4585 return -EIO;
4586 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4587 status = decode_first_pnfs_layout_type(xdr, layouttype);
4588 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4589 } else
4590 *layouttype = 0;
4591 return status;
4592 }
4593
4594 /*
4595 * The prefered block size for layout directed io
4596 */
4597 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4598 uint32_t *res)
4599 {
4600 __be32 *p;
4601
4602 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4603 *res = 0;
4604 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4605 p = xdr_inline_decode(xdr, 4);
4606 if (unlikely(!p)) {
4607 print_overflow_msg(__func__, xdr);
4608 return -EIO;
4609 }
4610 *res = be32_to_cpup(p);
4611 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4612 }
4613 return 0;
4614 }
4615
4616 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4617 {
4618 unsigned int savep;
4619 uint32_t attrlen, bitmap[3];
4620 int status;
4621
4622 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4623 goto xdr_error;
4624 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4625 goto xdr_error;
4626 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4627 goto xdr_error;
4628
4629 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4630
4631 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4632 goto xdr_error;
4633 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4634 goto xdr_error;
4635 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4636 goto xdr_error;
4637 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4638 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4639 goto xdr_error;
4640 fsinfo->wtpref = fsinfo->wtmax;
4641 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4642 if (status != 0)
4643 goto xdr_error;
4644 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4645 if (status != 0)
4646 goto xdr_error;
4647 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4648 if (status)
4649 goto xdr_error;
4650
4651 status = verify_attr_len(xdr, savep, attrlen);
4652 xdr_error:
4653 dprintk("%s: xdr returned %d!\n", __func__, -status);
4654 return status;
4655 }
4656
4657 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4658 {
4659 __be32 *p;
4660 uint32_t len;
4661 int status;
4662
4663 /* Zero handle first to allow comparisons */
4664 memset(fh, 0, sizeof(*fh));
4665
4666 status = decode_op_hdr(xdr, OP_GETFH);
4667 if (status)
4668 return status;
4669
4670 p = xdr_inline_decode(xdr, 4);
4671 if (unlikely(!p))
4672 goto out_overflow;
4673 len = be32_to_cpup(p);
4674 if (len > NFS4_FHSIZE)
4675 return -EIO;
4676 fh->size = len;
4677 p = xdr_inline_decode(xdr, len);
4678 if (unlikely(!p))
4679 goto out_overflow;
4680 memcpy(fh->data, p, len);
4681 return 0;
4682 out_overflow:
4683 print_overflow_msg(__func__, xdr);
4684 return -EIO;
4685 }
4686
4687 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4688 {
4689 int status;
4690
4691 status = decode_op_hdr(xdr, OP_LINK);
4692 if (status)
4693 return status;
4694 return decode_change_info(xdr, cinfo);
4695 }
4696
4697 /*
4698 * We create the owner, so we know a proper owner.id length is 4.
4699 */
4700 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4701 {
4702 uint64_t offset, length, clientid;
4703 __be32 *p;
4704 uint32_t namelen, type;
4705
4706 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4707 if (unlikely(!p))
4708 goto out_overflow;
4709 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4710 p = xdr_decode_hyper(p, &length);
4711 type = be32_to_cpup(p++); /* 4 byte read */
4712 if (fl != NULL) { /* manipulate file lock */
4713 fl->fl_start = (loff_t)offset;
4714 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4715 if (length == ~(uint64_t)0)
4716 fl->fl_end = OFFSET_MAX;
4717 fl->fl_type = F_WRLCK;
4718 if (type & 1)
4719 fl->fl_type = F_RDLCK;
4720 fl->fl_pid = 0;
4721 }
4722 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4723 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4724 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4725 if (likely(p))
4726 return -NFS4ERR_DENIED;
4727 out_overflow:
4728 print_overflow_msg(__func__, xdr);
4729 return -EIO;
4730 }
4731
4732 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4733 {
4734 int status;
4735
4736 status = decode_op_hdr(xdr, OP_LOCK);
4737 if (status == -EIO)
4738 goto out;
4739 if (status == 0) {
4740 status = decode_stateid(xdr, &res->stateid);
4741 if (unlikely(status))
4742 goto out;
4743 } else if (status == -NFS4ERR_DENIED)
4744 status = decode_lock_denied(xdr, NULL);
4745 if (res->open_seqid != NULL)
4746 nfs_increment_open_seqid(status, res->open_seqid);
4747 nfs_increment_lock_seqid(status, res->lock_seqid);
4748 out:
4749 return status;
4750 }
4751
4752 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4753 {
4754 int status;
4755 status = decode_op_hdr(xdr, OP_LOCKT);
4756 if (status == -NFS4ERR_DENIED)
4757 return decode_lock_denied(xdr, res->denied);
4758 return status;
4759 }
4760
4761 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4762 {
4763 int status;
4764
4765 status = decode_op_hdr(xdr, OP_LOCKU);
4766 if (status != -EIO)
4767 nfs_increment_lock_seqid(status, res->seqid);
4768 if (status == 0)
4769 status = decode_stateid(xdr, &res->stateid);
4770 return status;
4771 }
4772
4773 static int decode_release_lockowner(struct xdr_stream *xdr)
4774 {
4775 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4776 }
4777
4778 static int decode_lookup(struct xdr_stream *xdr)
4779 {
4780 return decode_op_hdr(xdr, OP_LOOKUP);
4781 }
4782
4783 /* This is too sick! */
4784 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4785 {
4786 __be32 *p;
4787 uint32_t limit_type, nblocks, blocksize;
4788
4789 p = xdr_inline_decode(xdr, 12);
4790 if (unlikely(!p))
4791 goto out_overflow;
4792 limit_type = be32_to_cpup(p++);
4793 switch (limit_type) {
4794 case 1:
4795 xdr_decode_hyper(p, maxsize);
4796 break;
4797 case 2:
4798 nblocks = be32_to_cpup(p++);
4799 blocksize = be32_to_cpup(p);
4800 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4801 }
4802 return 0;
4803 out_overflow:
4804 print_overflow_msg(__func__, xdr);
4805 return -EIO;
4806 }
4807
4808 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4809 {
4810 __be32 *p;
4811 uint32_t delegation_type;
4812 int status;
4813
4814 p = xdr_inline_decode(xdr, 4);
4815 if (unlikely(!p))
4816 goto out_overflow;
4817 delegation_type = be32_to_cpup(p);
4818 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4819 res->delegation_type = 0;
4820 return 0;
4821 }
4822 status = decode_stateid(xdr, &res->delegation);
4823 if (unlikely(status))
4824 return status;
4825 p = xdr_inline_decode(xdr, 4);
4826 if (unlikely(!p))
4827 goto out_overflow;
4828 res->do_recall = be32_to_cpup(p);
4829
4830 switch (delegation_type) {
4831 case NFS4_OPEN_DELEGATE_READ:
4832 res->delegation_type = FMODE_READ;
4833 break;
4834 case NFS4_OPEN_DELEGATE_WRITE:
4835 res->delegation_type = FMODE_WRITE|FMODE_READ;
4836 if (decode_space_limit(xdr, &res->maxsize) < 0)
4837 return -EIO;
4838 }
4839 return decode_ace(xdr, NULL, res->server->nfs_client);
4840 out_overflow:
4841 print_overflow_msg(__func__, xdr);
4842 return -EIO;
4843 }
4844
4845 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4846 {
4847 __be32 *p;
4848 uint32_t savewords, bmlen, i;
4849 int status;
4850
4851 status = decode_op_hdr(xdr, OP_OPEN);
4852 if (status != -EIO)
4853 nfs_increment_open_seqid(status, res->seqid);
4854 if (!status)
4855 status = decode_stateid(xdr, &res->stateid);
4856 if (unlikely(status))
4857 return status;
4858
4859 decode_change_info(xdr, &res->cinfo);
4860
4861 p = xdr_inline_decode(xdr, 8);
4862 if (unlikely(!p))
4863 goto out_overflow;
4864 res->rflags = be32_to_cpup(p++);
4865 bmlen = be32_to_cpup(p);
4866 if (bmlen > 10)
4867 goto xdr_error;
4868
4869 p = xdr_inline_decode(xdr, bmlen << 2);
4870 if (unlikely(!p))
4871 goto out_overflow;
4872 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4873 for (i = 0; i < savewords; ++i)
4874 res->attrset[i] = be32_to_cpup(p++);
4875 for (; i < NFS4_BITMAP_SIZE; i++)
4876 res->attrset[i] = 0;
4877
4878 return decode_delegation(xdr, res);
4879 xdr_error:
4880 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4881 return -EIO;
4882 out_overflow:
4883 print_overflow_msg(__func__, xdr);
4884 return -EIO;
4885 }
4886
4887 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4888 {
4889 int status;
4890
4891 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4892 if (status != -EIO)
4893 nfs_increment_open_seqid(status, res->seqid);
4894 if (!status)
4895 status = decode_stateid(xdr, &res->stateid);
4896 return status;
4897 }
4898
4899 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4900 {
4901 int status;
4902
4903 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4904 if (status != -EIO)
4905 nfs_increment_open_seqid(status, res->seqid);
4906 if (!status)
4907 status = decode_stateid(xdr, &res->stateid);
4908 return status;
4909 }
4910
4911 static int decode_putfh(struct xdr_stream *xdr)
4912 {
4913 return decode_op_hdr(xdr, OP_PUTFH);
4914 }
4915
4916 static int decode_putrootfh(struct xdr_stream *xdr)
4917 {
4918 return decode_op_hdr(xdr, OP_PUTROOTFH);
4919 }
4920
4921 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4922 {
4923 __be32 *p;
4924 uint32_t count, eof, recvd;
4925 int status;
4926
4927 status = decode_op_hdr(xdr, OP_READ);
4928 if (status)
4929 return status;
4930 p = xdr_inline_decode(xdr, 8);
4931 if (unlikely(!p))
4932 goto out_overflow;
4933 eof = be32_to_cpup(p++);
4934 count = be32_to_cpup(p);
4935 recvd = xdr_read_pages(xdr, count);
4936 if (count > recvd) {
4937 dprintk("NFS: server cheating in read reply: "
4938 "count %u > recvd %u\n", count, recvd);
4939 count = recvd;
4940 eof = 0;
4941 }
4942 res->eof = eof;
4943 res->count = count;
4944 return 0;
4945 out_overflow:
4946 print_overflow_msg(__func__, xdr);
4947 return -EIO;
4948 }
4949
4950 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4951 {
4952 int status;
4953 __be32 verf[2];
4954
4955 status = decode_op_hdr(xdr, OP_READDIR);
4956 if (!status)
4957 status = decode_verifier(xdr, readdir->verifier.data);
4958 if (unlikely(status))
4959 return status;
4960 memcpy(verf, readdir->verifier.data, sizeof(verf));
4961 dprintk("%s: verifier = %08x:%08x\n",
4962 __func__, verf[0], verf[1]);
4963 return xdr_read_pages(xdr, xdr->buf->page_len);
4964 }
4965
4966 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4967 {
4968 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4969 u32 len, recvd;
4970 __be32 *p;
4971 int status;
4972
4973 status = decode_op_hdr(xdr, OP_READLINK);
4974 if (status)
4975 return status;
4976
4977 /* Convert length of symlink */
4978 p = xdr_inline_decode(xdr, 4);
4979 if (unlikely(!p))
4980 goto out_overflow;
4981 len = be32_to_cpup(p);
4982 if (len >= rcvbuf->page_len || len <= 0) {
4983 dprintk("nfs: server returned giant symlink!\n");
4984 return -ENAMETOOLONG;
4985 }
4986 recvd = xdr_read_pages(xdr, len);
4987 if (recvd < len) {
4988 dprintk("NFS: server cheating in readlink reply: "
4989 "count %u > recvd %u\n", len, recvd);
4990 return -EIO;
4991 }
4992 /*
4993 * The XDR encode routine has set things up so that
4994 * the link text will be copied directly into the
4995 * buffer. We just have to do overflow-checking,
4996 * and and null-terminate the text (the VFS expects
4997 * null-termination).
4998 */
4999 xdr_terminate_string(rcvbuf, len);
5000 return 0;
5001 out_overflow:
5002 print_overflow_msg(__func__, xdr);
5003 return -EIO;
5004 }
5005
5006 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5007 {
5008 int status;
5009
5010 status = decode_op_hdr(xdr, OP_REMOVE);
5011 if (status)
5012 goto out;
5013 status = decode_change_info(xdr, cinfo);
5014 out:
5015 return status;
5016 }
5017
5018 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5019 struct nfs4_change_info *new_cinfo)
5020 {
5021 int status;
5022
5023 status = decode_op_hdr(xdr, OP_RENAME);
5024 if (status)
5025 goto out;
5026 if ((status = decode_change_info(xdr, old_cinfo)))
5027 goto out;
5028 status = decode_change_info(xdr, new_cinfo);
5029 out:
5030 return status;
5031 }
5032
5033 static int decode_renew(struct xdr_stream *xdr)
5034 {
5035 return decode_op_hdr(xdr, OP_RENEW);
5036 }
5037
5038 static int
5039 decode_restorefh(struct xdr_stream *xdr)
5040 {
5041 return decode_op_hdr(xdr, OP_RESTOREFH);
5042 }
5043
5044 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5045 struct nfs_getaclres *res)
5046 {
5047 unsigned int savep;
5048 uint32_t attrlen,
5049 bitmap[3] = {0};
5050 int status;
5051 unsigned int pg_offset;
5052
5053 res->acl_len = 0;
5054 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5055 goto out;
5056
5057 xdr_enter_page(xdr, xdr->buf->page_len);
5058
5059 /* Calculate the offset of the page data */
5060 pg_offset = xdr->buf->head[0].iov_len;
5061
5062 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5063 goto out;
5064 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5065 goto out;
5066
5067 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5068 return -EIO;
5069 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5070
5071 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5072 * are stored with the acl data to handle the problem of
5073 * variable length bitmaps.*/
5074 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5075
5076 /* We ignore &savep and don't do consistency checks on
5077 * the attr length. Let userspace figure it out.... */
5078 res->acl_len = attrlen;
5079 if (attrlen > (xdr->nwords << 2)) {
5080 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) {
5081 /* getxattr interface called with a NULL buf */
5082 goto out;
5083 }
5084 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5085 attrlen, xdr->nwords << 2);
5086 return -EINVAL;
5087 }
5088 } else
5089 status = -EOPNOTSUPP;
5090
5091 out:
5092 return status;
5093 }
5094
5095 static int
5096 decode_savefh(struct xdr_stream *xdr)
5097 {
5098 return decode_op_hdr(xdr, OP_SAVEFH);
5099 }
5100
5101 static int decode_setattr(struct xdr_stream *xdr)
5102 {
5103 __be32 *p;
5104 uint32_t bmlen;
5105 int status;
5106
5107 status = decode_op_hdr(xdr, OP_SETATTR);
5108 if (status)
5109 return status;
5110 p = xdr_inline_decode(xdr, 4);
5111 if (unlikely(!p))
5112 goto out_overflow;
5113 bmlen = be32_to_cpup(p);
5114 p = xdr_inline_decode(xdr, bmlen << 2);
5115 if (likely(p))
5116 return 0;
5117 out_overflow:
5118 print_overflow_msg(__func__, xdr);
5119 return -EIO;
5120 }
5121
5122 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5123 {
5124 __be32 *p;
5125 uint32_t opnum;
5126 int32_t nfserr;
5127
5128 p = xdr_inline_decode(xdr, 8);
5129 if (unlikely(!p))
5130 goto out_overflow;
5131 opnum = be32_to_cpup(p++);
5132 if (opnum != OP_SETCLIENTID) {
5133 dprintk("nfs: decode_setclientid: Server returned operation"
5134 " %d\n", opnum);
5135 return -EIO;
5136 }
5137 nfserr = be32_to_cpup(p);
5138 if (nfserr == NFS_OK) {
5139 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5140 if (unlikely(!p))
5141 goto out_overflow;
5142 p = xdr_decode_hyper(p, &res->clientid);
5143 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5144 } else if (nfserr == NFSERR_CLID_INUSE) {
5145 uint32_t len;
5146
5147 /* skip netid string */
5148 p = xdr_inline_decode(xdr, 4);
5149 if (unlikely(!p))
5150 goto out_overflow;
5151 len = be32_to_cpup(p);
5152 p = xdr_inline_decode(xdr, len);
5153 if (unlikely(!p))
5154 goto out_overflow;
5155
5156 /* skip uaddr string */
5157 p = xdr_inline_decode(xdr, 4);
5158 if (unlikely(!p))
5159 goto out_overflow;
5160 len = be32_to_cpup(p);
5161 p = xdr_inline_decode(xdr, len);
5162 if (unlikely(!p))
5163 goto out_overflow;
5164 return -NFSERR_CLID_INUSE;
5165 } else
5166 return nfs4_stat_to_errno(nfserr);
5167
5168 return 0;
5169 out_overflow:
5170 print_overflow_msg(__func__, xdr);
5171 return -EIO;
5172 }
5173
5174 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5175 {
5176 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5177 }
5178
5179 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5180 {
5181 __be32 *p;
5182 int status;
5183
5184 status = decode_op_hdr(xdr, OP_WRITE);
5185 if (status)
5186 return status;
5187
5188 p = xdr_inline_decode(xdr, 8);
5189 if (unlikely(!p))
5190 goto out_overflow;
5191 res->count = be32_to_cpup(p++);
5192 res->verf->committed = be32_to_cpup(p++);
5193 return decode_write_verifier(xdr, &res->verf->verifier);
5194 out_overflow:
5195 print_overflow_msg(__func__, xdr);
5196 return -EIO;
5197 }
5198
5199 static int decode_delegreturn(struct xdr_stream *xdr)
5200 {
5201 return decode_op_hdr(xdr, OP_DELEGRETURN);
5202 }
5203
5204 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5205 {
5206 __be32 *p;
5207
5208 p = xdr_inline_decode(xdr, 4);
5209 if (unlikely(!p))
5210 goto out_overflow;
5211 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5212 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5213 goto out_err;
5214
5215 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5216 if (unlikely(!p))
5217 goto out_overflow;
5218 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5219
5220 p = xdr_inline_decode(xdr, 8);
5221 if (unlikely(!p))
5222 goto out_overflow;
5223 flavor->gss.qop4 = be32_to_cpup(p++);
5224 flavor->gss.service = be32_to_cpup(p);
5225
5226 return 0;
5227
5228 out_overflow:
5229 print_overflow_msg(__func__, xdr);
5230 return -EIO;
5231 out_err:
5232 return -EINVAL;
5233 }
5234
5235 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5236 {
5237 struct nfs4_secinfo_flavor *sec_flavor;
5238 int status;
5239 __be32 *p;
5240 int i, num_flavors;
5241
5242 p = xdr_inline_decode(xdr, 4);
5243 if (unlikely(!p))
5244 goto out_overflow;
5245
5246 res->flavors->num_flavors = 0;
5247 num_flavors = be32_to_cpup(p);
5248
5249 for (i = 0; i < num_flavors; i++) {
5250 sec_flavor = &res->flavors->flavors[i];
5251 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5252 break;
5253
5254 p = xdr_inline_decode(xdr, 4);
5255 if (unlikely(!p))
5256 goto out_overflow;
5257 sec_flavor->flavor = be32_to_cpup(p);
5258
5259 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5260 status = decode_secinfo_gss(xdr, sec_flavor);
5261 if (status)
5262 goto out;
5263 }
5264 res->flavors->num_flavors++;
5265 }
5266
5267 status = 0;
5268 out:
5269 return status;
5270 out_overflow:
5271 print_overflow_msg(__func__, xdr);
5272 return -EIO;
5273 }
5274
5275 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5276 {
5277 int status = decode_op_hdr(xdr, OP_SECINFO);
5278 if (status)
5279 return status;
5280 return decode_secinfo_common(xdr, res);
5281 }
5282
5283 #if defined(CONFIG_NFS_V4_1)
5284 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5285 {
5286 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5287 if (status)
5288 return status;
5289 return decode_secinfo_common(xdr, res);
5290 }
5291
5292 static int decode_exchange_id(struct xdr_stream *xdr,
5293 struct nfs41_exchange_id_res *res)
5294 {
5295 __be32 *p;
5296 uint32_t dummy;
5297 char *dummy_str;
5298 int status;
5299 uint32_t impl_id_count;
5300
5301 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5302 if (status)
5303 return status;
5304
5305 p = xdr_inline_decode(xdr, 8);
5306 if (unlikely(!p))
5307 goto out_overflow;
5308 xdr_decode_hyper(p, &res->clientid);
5309 p = xdr_inline_decode(xdr, 12);
5310 if (unlikely(!p))
5311 goto out_overflow;
5312 res->seqid = be32_to_cpup(p++);
5313 res->flags = be32_to_cpup(p++);
5314
5315 /* We ask for SP4_NONE */
5316 dummy = be32_to_cpup(p);
5317 if (dummy != SP4_NONE)
5318 return -EIO;
5319
5320 /* server_owner4.so_minor_id */
5321 p = xdr_inline_decode(xdr, 8);
5322 if (unlikely(!p))
5323 goto out_overflow;
5324 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5325
5326 /* server_owner4.so_major_id */
5327 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5328 if (unlikely(status))
5329 return status;
5330 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5331 return -EIO;
5332 memcpy(res->server_owner->major_id, dummy_str, dummy);
5333 res->server_owner->major_id_sz = dummy;
5334
5335 /* server_scope4 */
5336 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5337 if (unlikely(status))
5338 return status;
5339 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5340 return -EIO;
5341 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5342 res->server_scope->server_scope_sz = dummy;
5343
5344 /* Implementation Id */
5345 p = xdr_inline_decode(xdr, 4);
5346 if (unlikely(!p))
5347 goto out_overflow;
5348 impl_id_count = be32_to_cpup(p++);
5349
5350 if (impl_id_count) {
5351 /* nii_domain */
5352 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5353 if (unlikely(status))
5354 return status;
5355 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5356 return -EIO;
5357 memcpy(res->impl_id->domain, dummy_str, dummy);
5358
5359 /* nii_name */
5360 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5361 if (unlikely(status))
5362 return status;
5363 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5364 return -EIO;
5365 memcpy(res->impl_id->name, dummy_str, dummy);
5366
5367 /* nii_date */
5368 p = xdr_inline_decode(xdr, 12);
5369 if (unlikely(!p))
5370 goto out_overflow;
5371 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5372 res->impl_id->date.nseconds = be32_to_cpup(p);
5373
5374 /* if there's more than one entry, ignore the rest */
5375 }
5376 return 0;
5377 out_overflow:
5378 print_overflow_msg(__func__, xdr);
5379 return -EIO;
5380 }
5381
5382 static int decode_chan_attrs(struct xdr_stream *xdr,
5383 struct nfs4_channel_attrs *attrs)
5384 {
5385 __be32 *p;
5386 u32 nr_attrs, val;
5387
5388 p = xdr_inline_decode(xdr, 28);
5389 if (unlikely(!p))
5390 goto out_overflow;
5391 val = be32_to_cpup(p++); /* headerpadsz */
5392 if (val)
5393 return -EINVAL; /* no support for header padding yet */
5394 attrs->max_rqst_sz = be32_to_cpup(p++);
5395 attrs->max_resp_sz = be32_to_cpup(p++);
5396 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5397 attrs->max_ops = be32_to_cpup(p++);
5398 attrs->max_reqs = be32_to_cpup(p++);
5399 nr_attrs = be32_to_cpup(p);
5400 if (unlikely(nr_attrs > 1)) {
5401 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5402 "count %u\n", __func__, nr_attrs);
5403 return -EINVAL;
5404 }
5405 if (nr_attrs == 1) {
5406 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5407 if (unlikely(!p))
5408 goto out_overflow;
5409 }
5410 return 0;
5411 out_overflow:
5412 print_overflow_msg(__func__, xdr);
5413 return -EIO;
5414 }
5415
5416 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5417 {
5418 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5419 }
5420
5421 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5422 struct nfs41_bind_conn_to_session_res *res)
5423 {
5424 __be32 *p;
5425 int status;
5426
5427 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5428 if (!status)
5429 status = decode_sessionid(xdr, &res->session->sess_id);
5430 if (unlikely(status))
5431 return status;
5432
5433 /* dir flags, rdma mode bool */
5434 p = xdr_inline_decode(xdr, 8);
5435 if (unlikely(!p))
5436 goto out_overflow;
5437
5438 res->dir = be32_to_cpup(p++);
5439 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5440 return -EIO;
5441 if (be32_to_cpup(p) == 0)
5442 res->use_conn_in_rdma_mode = false;
5443 else
5444 res->use_conn_in_rdma_mode = true;
5445
5446 return 0;
5447 out_overflow:
5448 print_overflow_msg(__func__, xdr);
5449 return -EIO;
5450 }
5451
5452 static int decode_create_session(struct xdr_stream *xdr,
5453 struct nfs41_create_session_res *res)
5454 {
5455 __be32 *p;
5456 int status;
5457 struct nfs_client *clp = res->client;
5458 struct nfs4_session *session = clp->cl_session;
5459
5460 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5461 if (!status)
5462 status = decode_sessionid(xdr, &session->sess_id);
5463 if (unlikely(status))
5464 return status;
5465
5466 /* seqid, flags */
5467 p = xdr_inline_decode(xdr, 8);
5468 if (unlikely(!p))
5469 goto out_overflow;
5470 clp->cl_seqid = be32_to_cpup(p++);
5471 session->flags = be32_to_cpup(p);
5472
5473 /* Channel attributes */
5474 status = decode_chan_attrs(xdr, &session->fc_attrs);
5475 if (!status)
5476 status = decode_chan_attrs(xdr, &session->bc_attrs);
5477 return status;
5478 out_overflow:
5479 print_overflow_msg(__func__, xdr);
5480 return -EIO;
5481 }
5482
5483 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5484 {
5485 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5486 }
5487
5488 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5489 {
5490 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5491 }
5492
5493 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5494 {
5495 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5496 }
5497 #endif /* CONFIG_NFS_V4_1 */
5498
5499 static int decode_sequence(struct xdr_stream *xdr,
5500 struct nfs4_sequence_res *res,
5501 struct rpc_rqst *rqstp)
5502 {
5503 #if defined(CONFIG_NFS_V4_1)
5504 struct nfs4_sessionid id;
5505 u32 dummy;
5506 int status;
5507 __be32 *p;
5508
5509 if (!res->sr_session)
5510 return 0;
5511
5512 status = decode_op_hdr(xdr, OP_SEQUENCE);
5513 if (!status)
5514 status = decode_sessionid(xdr, &id);
5515 if (unlikely(status))
5516 goto out_err;
5517
5518 /*
5519 * If the server returns different values for sessionID, slotID or
5520 * sequence number, the server is looney tunes.
5521 */
5522 status = -EREMOTEIO;
5523
5524 if (memcmp(id.data, res->sr_session->sess_id.data,
5525 NFS4_MAX_SESSIONID_LEN)) {
5526 dprintk("%s Invalid session id\n", __func__);
5527 goto out_err;
5528 }
5529
5530 p = xdr_inline_decode(xdr, 20);
5531 if (unlikely(!p))
5532 goto out_overflow;
5533
5534 /* seqid */
5535 dummy = be32_to_cpup(p++);
5536 if (dummy != res->sr_slot->seq_nr) {
5537 dprintk("%s Invalid sequence number\n", __func__);
5538 goto out_err;
5539 }
5540 /* slot id */
5541 dummy = be32_to_cpup(p++);
5542 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
5543 dprintk("%s Invalid slot id\n", __func__);
5544 goto out_err;
5545 }
5546 /* highest slot id - currently not processed */
5547 dummy = be32_to_cpup(p++);
5548 /* target highest slot id - currently not processed */
5549 dummy = be32_to_cpup(p++);
5550 /* result flags */
5551 res->sr_status_flags = be32_to_cpup(p);
5552 status = 0;
5553 out_err:
5554 res->sr_status = status;
5555 return status;
5556 out_overflow:
5557 print_overflow_msg(__func__, xdr);
5558 status = -EIO;
5559 goto out_err;
5560 #else /* CONFIG_NFS_V4_1 */
5561 return 0;
5562 #endif /* CONFIG_NFS_V4_1 */
5563 }
5564
5565 #if defined(CONFIG_NFS_V4_1)
5566 /*
5567 * TODO: Need to handle case when EOF != true;
5568 */
5569 static int decode_getdevicelist(struct xdr_stream *xdr,
5570 struct pnfs_devicelist *res)
5571 {
5572 __be32 *p;
5573 int status, i;
5574 nfs4_verifier verftemp;
5575
5576 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5577 if (status)
5578 return status;
5579
5580 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5581 if (unlikely(!p))
5582 goto out_overflow;
5583
5584 /* TODO: Skip cookie for now */
5585 p += 2;
5586
5587 /* Read verifier */
5588 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5589
5590 res->num_devs = be32_to_cpup(p);
5591
5592 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5593
5594 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5595 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5596 __func__, res->num_devs);
5597 return -EIO;
5598 }
5599
5600 p = xdr_inline_decode(xdr,
5601 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5602 if (unlikely(!p))
5603 goto out_overflow;
5604 for (i = 0; i < res->num_devs; i++)
5605 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5606 NFS4_DEVICEID4_SIZE);
5607 res->eof = be32_to_cpup(p);
5608 return 0;
5609 out_overflow:
5610 print_overflow_msg(__func__, xdr);
5611 return -EIO;
5612 }
5613
5614 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5615 struct pnfs_device *pdev)
5616 {
5617 __be32 *p;
5618 uint32_t len, type;
5619 int status;
5620
5621 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5622 if (status) {
5623 if (status == -ETOOSMALL) {
5624 p = xdr_inline_decode(xdr, 4);
5625 if (unlikely(!p))
5626 goto out_overflow;
5627 pdev->mincount = be32_to_cpup(p);
5628 dprintk("%s: Min count too small. mincnt = %u\n",
5629 __func__, pdev->mincount);
5630 }
5631 return status;
5632 }
5633
5634 p = xdr_inline_decode(xdr, 8);
5635 if (unlikely(!p))
5636 goto out_overflow;
5637 type = be32_to_cpup(p++);
5638 if (type != pdev->layout_type) {
5639 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5640 __func__, pdev->layout_type, type);
5641 return -EINVAL;
5642 }
5643 /*
5644 * Get the length of the opaque device_addr4. xdr_read_pages places
5645 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5646 * and places the remaining xdr data in xdr_buf->tail
5647 */
5648 pdev->mincount = be32_to_cpup(p);
5649 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5650
5651 /* Parse notification bitmap, verifying that it is zero. */
5652 p = xdr_inline_decode(xdr, 4);
5653 if (unlikely(!p))
5654 goto out_overflow;
5655 len = be32_to_cpup(p);
5656 if (len) {
5657 uint32_t i;
5658
5659 p = xdr_inline_decode(xdr, 4 * len);
5660 if (unlikely(!p))
5661 goto out_overflow;
5662 for (i = 0; i < len; i++, p++) {
5663 if (be32_to_cpup(p)) {
5664 dprintk("%s: notifications not supported\n",
5665 __func__);
5666 return -EIO;
5667 }
5668 }
5669 }
5670 return 0;
5671 out_overflow:
5672 print_overflow_msg(__func__, xdr);
5673 return -EIO;
5674 }
5675
5676 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5677 struct nfs4_layoutget_res *res)
5678 {
5679 __be32 *p;
5680 int status;
5681 u32 layout_count;
5682 u32 recvd;
5683
5684 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5685 if (status)
5686 return status;
5687 p = xdr_inline_decode(xdr, 4);
5688 if (unlikely(!p))
5689 goto out_overflow;
5690 res->return_on_close = be32_to_cpup(p);
5691 decode_stateid(xdr, &res->stateid);
5692 p = xdr_inline_decode(xdr, 4);
5693 if (unlikely(!p))
5694 goto out_overflow;
5695 layout_count = be32_to_cpup(p);
5696 if (!layout_count) {
5697 dprintk("%s: server responded with empty layout array\n",
5698 __func__);
5699 return -EINVAL;
5700 }
5701
5702 p = xdr_inline_decode(xdr, 28);
5703 if (unlikely(!p))
5704 goto out_overflow;
5705 p = xdr_decode_hyper(p, &res->range.offset);
5706 p = xdr_decode_hyper(p, &res->range.length);
5707 res->range.iomode = be32_to_cpup(p++);
5708 res->type = be32_to_cpup(p++);
5709 res->layoutp->len = be32_to_cpup(p);
5710
5711 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5712 __func__,
5713 (unsigned long)res->range.offset,
5714 (unsigned long)res->range.length,
5715 res->range.iomode,
5716 res->type,
5717 res->layoutp->len);
5718
5719 recvd = xdr_read_pages(xdr, res->layoutp->len);
5720 if (res->layoutp->len > recvd) {
5721 dprintk("NFS: server cheating in layoutget reply: "
5722 "layout len %u > recvd %u\n",
5723 res->layoutp->len, recvd);
5724 return -EINVAL;
5725 }
5726
5727 if (layout_count > 1) {
5728 /* We only handle a length one array at the moment. Any
5729 * further entries are just ignored. Note that this means
5730 * the client may see a response that is less than the
5731 * minimum it requested.
5732 */
5733 dprintk("%s: server responded with %d layouts, dropping tail\n",
5734 __func__, layout_count);
5735 }
5736
5737 return 0;
5738 out_overflow:
5739 print_overflow_msg(__func__, xdr);
5740 return -EIO;
5741 }
5742
5743 static int decode_layoutreturn(struct xdr_stream *xdr,
5744 struct nfs4_layoutreturn_res *res)
5745 {
5746 __be32 *p;
5747 int status;
5748
5749 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5750 if (status)
5751 return status;
5752 p = xdr_inline_decode(xdr, 4);
5753 if (unlikely(!p))
5754 goto out_overflow;
5755 res->lrs_present = be32_to_cpup(p);
5756 if (res->lrs_present)
5757 status = decode_stateid(xdr, &res->stateid);
5758 return status;
5759 out_overflow:
5760 print_overflow_msg(__func__, xdr);
5761 return -EIO;
5762 }
5763
5764 static int decode_layoutcommit(struct xdr_stream *xdr,
5765 struct rpc_rqst *req,
5766 struct nfs4_layoutcommit_res *res)
5767 {
5768 __be32 *p;
5769 __u32 sizechanged;
5770 int status;
5771
5772 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5773 res->status = status;
5774 if (status)
5775 return status;
5776
5777 p = xdr_inline_decode(xdr, 4);
5778 if (unlikely(!p))
5779 goto out_overflow;
5780 sizechanged = be32_to_cpup(p);
5781
5782 if (sizechanged) {
5783 /* throw away new size */
5784 p = xdr_inline_decode(xdr, 8);
5785 if (unlikely(!p))
5786 goto out_overflow;
5787 }
5788 return 0;
5789 out_overflow:
5790 print_overflow_msg(__func__, xdr);
5791 return -EIO;
5792 }
5793
5794 static int decode_test_stateid(struct xdr_stream *xdr,
5795 struct nfs41_test_stateid_res *res)
5796 {
5797 __be32 *p;
5798 int status;
5799 int num_res;
5800
5801 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5802 if (status)
5803 return status;
5804
5805 p = xdr_inline_decode(xdr, 4);
5806 if (unlikely(!p))
5807 goto out_overflow;
5808 num_res = be32_to_cpup(p++);
5809 if (num_res != 1)
5810 goto out;
5811
5812 p = xdr_inline_decode(xdr, 4);
5813 if (unlikely(!p))
5814 goto out_overflow;
5815 res->status = be32_to_cpup(p++);
5816
5817 return status;
5818 out_overflow:
5819 print_overflow_msg(__func__, xdr);
5820 out:
5821 return -EIO;
5822 }
5823
5824 static int decode_free_stateid(struct xdr_stream *xdr,
5825 struct nfs41_free_stateid_res *res)
5826 {
5827 __be32 *p;
5828 int status;
5829
5830 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5831 if (status)
5832 return status;
5833
5834 p = xdr_inline_decode(xdr, 4);
5835 if (unlikely(!p))
5836 goto out_overflow;
5837 res->status = be32_to_cpup(p++);
5838 return res->status;
5839 out_overflow:
5840 print_overflow_msg(__func__, xdr);
5841 return -EIO;
5842 }
5843 #endif /* CONFIG_NFS_V4_1 */
5844
5845 /*
5846 * END OF "GENERIC" DECODE ROUTINES.
5847 */
5848
5849 /*
5850 * Decode OPEN_DOWNGRADE response
5851 */
5852 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5853 struct xdr_stream *xdr,
5854 struct nfs_closeres *res)
5855 {
5856 struct compound_hdr hdr;
5857 int status;
5858
5859 status = decode_compound_hdr(xdr, &hdr);
5860 if (status)
5861 goto out;
5862 status = decode_sequence(xdr, &res->seq_res, rqstp);
5863 if (status)
5864 goto out;
5865 status = decode_putfh(xdr);
5866 if (status)
5867 goto out;
5868 status = decode_open_downgrade(xdr, res);
5869 if (status != 0)
5870 goto out;
5871 decode_getfattr(xdr, res->fattr, res->server);
5872 out:
5873 return status;
5874 }
5875
5876 /*
5877 * Decode ACCESS response
5878 */
5879 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5880 struct nfs4_accessres *res)
5881 {
5882 struct compound_hdr hdr;
5883 int status;
5884
5885 status = decode_compound_hdr(xdr, &hdr);
5886 if (status)
5887 goto out;
5888 status = decode_sequence(xdr, &res->seq_res, rqstp);
5889 if (status)
5890 goto out;
5891 status = decode_putfh(xdr);
5892 if (status != 0)
5893 goto out;
5894 status = decode_access(xdr, res);
5895 if (status != 0)
5896 goto out;
5897 decode_getfattr(xdr, res->fattr, res->server);
5898 out:
5899 return status;
5900 }
5901
5902 /*
5903 * Decode LOOKUP response
5904 */
5905 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5906 struct nfs4_lookup_res *res)
5907 {
5908 struct compound_hdr hdr;
5909 int status;
5910
5911 status = decode_compound_hdr(xdr, &hdr);
5912 if (status)
5913 goto out;
5914 status = decode_sequence(xdr, &res->seq_res, rqstp);
5915 if (status)
5916 goto out;
5917 status = decode_putfh(xdr);
5918 if (status)
5919 goto out;
5920 status = decode_lookup(xdr);
5921 if (status)
5922 goto out;
5923 status = decode_getfh(xdr, res->fh);
5924 if (status)
5925 goto out;
5926 status = decode_getfattr(xdr, res->fattr, res->server);
5927 out:
5928 return status;
5929 }
5930
5931 /*
5932 * Decode LOOKUP_ROOT response
5933 */
5934 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5935 struct xdr_stream *xdr,
5936 struct nfs4_lookup_res *res)
5937 {
5938 struct compound_hdr hdr;
5939 int status;
5940
5941 status = decode_compound_hdr(xdr, &hdr);
5942 if (status)
5943 goto out;
5944 status = decode_sequence(xdr, &res->seq_res, rqstp);
5945 if (status)
5946 goto out;
5947 status = decode_putrootfh(xdr);
5948 if (status)
5949 goto out;
5950 status = decode_getfh(xdr, res->fh);
5951 if (status == 0)
5952 status = decode_getfattr(xdr, res->fattr, res->server);
5953 out:
5954 return status;
5955 }
5956
5957 /*
5958 * Decode REMOVE response
5959 */
5960 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5961 struct nfs_removeres *res)
5962 {
5963 struct compound_hdr hdr;
5964 int status;
5965
5966 status = decode_compound_hdr(xdr, &hdr);
5967 if (status)
5968 goto out;
5969 status = decode_sequence(xdr, &res->seq_res, rqstp);
5970 if (status)
5971 goto out;
5972 status = decode_putfh(xdr);
5973 if (status)
5974 goto out;
5975 status = decode_remove(xdr, &res->cinfo);
5976 out:
5977 return status;
5978 }
5979
5980 /*
5981 * Decode RENAME response
5982 */
5983 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5984 struct nfs_renameres *res)
5985 {
5986 struct compound_hdr hdr;
5987 int status;
5988
5989 status = decode_compound_hdr(xdr, &hdr);
5990 if (status)
5991 goto out;
5992 status = decode_sequence(xdr, &res->seq_res, rqstp);
5993 if (status)
5994 goto out;
5995 status = decode_putfh(xdr);
5996 if (status)
5997 goto out;
5998 status = decode_savefh(xdr);
5999 if (status)
6000 goto out;
6001 status = decode_putfh(xdr);
6002 if (status)
6003 goto out;
6004 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6005 out:
6006 return status;
6007 }
6008
6009 /*
6010 * Decode LINK response
6011 */
6012 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6013 struct nfs4_link_res *res)
6014 {
6015 struct compound_hdr hdr;
6016 int status;
6017
6018 status = decode_compound_hdr(xdr, &hdr);
6019 if (status)
6020 goto out;
6021 status = decode_sequence(xdr, &res->seq_res, rqstp);
6022 if (status)
6023 goto out;
6024 status = decode_putfh(xdr);
6025 if (status)
6026 goto out;
6027 status = decode_savefh(xdr);
6028 if (status)
6029 goto out;
6030 status = decode_putfh(xdr);
6031 if (status)
6032 goto out;
6033 status = decode_link(xdr, &res->cinfo);
6034 if (status)
6035 goto out;
6036 /*
6037 * Note order: OP_LINK leaves the directory as the current
6038 * filehandle.
6039 */
6040 status = decode_restorefh(xdr);
6041 if (status)
6042 goto out;
6043 decode_getfattr(xdr, res->fattr, res->server);
6044 out:
6045 return status;
6046 }
6047
6048 /*
6049 * Decode CREATE response
6050 */
6051 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6052 struct nfs4_create_res *res)
6053 {
6054 struct compound_hdr hdr;
6055 int status;
6056
6057 status = decode_compound_hdr(xdr, &hdr);
6058 if (status)
6059 goto out;
6060 status = decode_sequence(xdr, &res->seq_res, rqstp);
6061 if (status)
6062 goto out;
6063 status = decode_putfh(xdr);
6064 if (status)
6065 goto out;
6066 status = decode_create(xdr, &res->dir_cinfo);
6067 if (status)
6068 goto out;
6069 status = decode_getfh(xdr, res->fh);
6070 if (status)
6071 goto out;
6072 decode_getfattr(xdr, res->fattr, res->server);
6073 out:
6074 return status;
6075 }
6076
6077 /*
6078 * Decode SYMLINK response
6079 */
6080 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6081 struct nfs4_create_res *res)
6082 {
6083 return nfs4_xdr_dec_create(rqstp, xdr, res);
6084 }
6085
6086 /*
6087 * Decode GETATTR response
6088 */
6089 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6090 struct nfs4_getattr_res *res)
6091 {
6092 struct compound_hdr hdr;
6093 int status;
6094
6095 status = decode_compound_hdr(xdr, &hdr);
6096 if (status)
6097 goto out;
6098 status = decode_sequence(xdr, &res->seq_res, rqstp);
6099 if (status)
6100 goto out;
6101 status = decode_putfh(xdr);
6102 if (status)
6103 goto out;
6104 status = decode_getfattr(xdr, res->fattr, res->server);
6105 out:
6106 return status;
6107 }
6108
6109 /*
6110 * Encode an SETACL request
6111 */
6112 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6113 struct nfs_setaclargs *args)
6114 {
6115 struct compound_hdr hdr = {
6116 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6117 };
6118
6119 encode_compound_hdr(xdr, req, &hdr);
6120 encode_sequence(xdr, &args->seq_args, &hdr);
6121 encode_putfh(xdr, args->fh, &hdr);
6122 encode_setacl(xdr, args, &hdr);
6123 encode_nops(&hdr);
6124 }
6125
6126 /*
6127 * Decode SETACL response
6128 */
6129 static int
6130 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6131 struct nfs_setaclres *res)
6132 {
6133 struct compound_hdr hdr;
6134 int status;
6135
6136 status = decode_compound_hdr(xdr, &hdr);
6137 if (status)
6138 goto out;
6139 status = decode_sequence(xdr, &res->seq_res, rqstp);
6140 if (status)
6141 goto out;
6142 status = decode_putfh(xdr);
6143 if (status)
6144 goto out;
6145 status = decode_setattr(xdr);
6146 out:
6147 return status;
6148 }
6149
6150 /*
6151 * Decode GETACL response
6152 */
6153 static int
6154 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6155 struct nfs_getaclres *res)
6156 {
6157 struct compound_hdr hdr;
6158 int status;
6159
6160 if (res->acl_scratch != NULL) {
6161 void *p = page_address(res->acl_scratch);
6162 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6163 }
6164 status = decode_compound_hdr(xdr, &hdr);
6165 if (status)
6166 goto out;
6167 status = decode_sequence(xdr, &res->seq_res, rqstp);
6168 if (status)
6169 goto out;
6170 status = decode_putfh(xdr);
6171 if (status)
6172 goto out;
6173 status = decode_getacl(xdr, rqstp, res);
6174
6175 out:
6176 return status;
6177 }
6178
6179 /*
6180 * Decode CLOSE response
6181 */
6182 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6183 struct nfs_closeres *res)
6184 {
6185 struct compound_hdr hdr;
6186 int status;
6187
6188 status = decode_compound_hdr(xdr, &hdr);
6189 if (status)
6190 goto out;
6191 status = decode_sequence(xdr, &res->seq_res, rqstp);
6192 if (status)
6193 goto out;
6194 status = decode_putfh(xdr);
6195 if (status)
6196 goto out;
6197 status = decode_close(xdr, res);
6198 if (status != 0)
6199 goto out;
6200 /*
6201 * Note: Server may do delete on close for this file
6202 * in which case the getattr call will fail with
6203 * an ESTALE error. Shouldn't be a problem,
6204 * though, since fattr->valid will remain unset.
6205 */
6206 decode_getfattr(xdr, res->fattr, res->server);
6207 out:
6208 return status;
6209 }
6210
6211 /*
6212 * Decode OPEN response
6213 */
6214 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6215 struct nfs_openres *res)
6216 {
6217 struct compound_hdr hdr;
6218 int status;
6219
6220 status = decode_compound_hdr(xdr, &hdr);
6221 if (status)
6222 goto out;
6223 status = decode_sequence(xdr, &res->seq_res, rqstp);
6224 if (status)
6225 goto out;
6226 status = decode_putfh(xdr);
6227 if (status)
6228 goto out;
6229 status = decode_open(xdr, res);
6230 if (status)
6231 goto out;
6232 if (decode_getfh(xdr, &res->fh) != 0)
6233 goto out;
6234 decode_getfattr(xdr, res->f_attr, res->server);
6235 out:
6236 return status;
6237 }
6238
6239 /*
6240 * Decode OPEN_CONFIRM response
6241 */
6242 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6243 struct xdr_stream *xdr,
6244 struct nfs_open_confirmres *res)
6245 {
6246 struct compound_hdr hdr;
6247 int status;
6248
6249 status = decode_compound_hdr(xdr, &hdr);
6250 if (status)
6251 goto out;
6252 status = decode_putfh(xdr);
6253 if (status)
6254 goto out;
6255 status = decode_open_confirm(xdr, res);
6256 out:
6257 return status;
6258 }
6259
6260 /*
6261 * Decode OPEN response
6262 */
6263 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6264 struct xdr_stream *xdr,
6265 struct nfs_openres *res)
6266 {
6267 struct compound_hdr hdr;
6268 int status;
6269
6270 status = decode_compound_hdr(xdr, &hdr);
6271 if (status)
6272 goto out;
6273 status = decode_sequence(xdr, &res->seq_res, rqstp);
6274 if (status)
6275 goto out;
6276 status = decode_putfh(xdr);
6277 if (status)
6278 goto out;
6279 status = decode_open(xdr, res);
6280 if (status)
6281 goto out;
6282 decode_getfattr(xdr, res->f_attr, res->server);
6283 out:
6284 return status;
6285 }
6286
6287 /*
6288 * Decode SETATTR response
6289 */
6290 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6291 struct xdr_stream *xdr,
6292 struct nfs_setattrres *res)
6293 {
6294 struct compound_hdr hdr;
6295 int status;
6296
6297 status = decode_compound_hdr(xdr, &hdr);
6298 if (status)
6299 goto out;
6300 status = decode_sequence(xdr, &res->seq_res, rqstp);
6301 if (status)
6302 goto out;
6303 status = decode_putfh(xdr);
6304 if (status)
6305 goto out;
6306 status = decode_setattr(xdr);
6307 if (status)
6308 goto out;
6309 decode_getfattr(xdr, res->fattr, res->server);
6310 out:
6311 return status;
6312 }
6313
6314 /*
6315 * Decode LOCK response
6316 */
6317 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6318 struct nfs_lock_res *res)
6319 {
6320 struct compound_hdr hdr;
6321 int status;
6322
6323 status = decode_compound_hdr(xdr, &hdr);
6324 if (status)
6325 goto out;
6326 status = decode_sequence(xdr, &res->seq_res, rqstp);
6327 if (status)
6328 goto out;
6329 status = decode_putfh(xdr);
6330 if (status)
6331 goto out;
6332 status = decode_lock(xdr, res);
6333 out:
6334 return status;
6335 }
6336
6337 /*
6338 * Decode LOCKT response
6339 */
6340 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6341 struct nfs_lockt_res *res)
6342 {
6343 struct compound_hdr hdr;
6344 int status;
6345
6346 status = decode_compound_hdr(xdr, &hdr);
6347 if (status)
6348 goto out;
6349 status = decode_sequence(xdr, &res->seq_res, rqstp);
6350 if (status)
6351 goto out;
6352 status = decode_putfh(xdr);
6353 if (status)
6354 goto out;
6355 status = decode_lockt(xdr, res);
6356 out:
6357 return status;
6358 }
6359
6360 /*
6361 * Decode LOCKU response
6362 */
6363 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6364 struct nfs_locku_res *res)
6365 {
6366 struct compound_hdr hdr;
6367 int status;
6368
6369 status = decode_compound_hdr(xdr, &hdr);
6370 if (status)
6371 goto out;
6372 status = decode_sequence(xdr, &res->seq_res, rqstp);
6373 if (status)
6374 goto out;
6375 status = decode_putfh(xdr);
6376 if (status)
6377 goto out;
6378 status = decode_locku(xdr, res);
6379 out:
6380 return status;
6381 }
6382
6383 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6384 struct xdr_stream *xdr, void *dummy)
6385 {
6386 struct compound_hdr hdr;
6387 int status;
6388
6389 status = decode_compound_hdr(xdr, &hdr);
6390 if (!status)
6391 status = decode_release_lockowner(xdr);
6392 return status;
6393 }
6394
6395 /*
6396 * Decode READLINK response
6397 */
6398 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6399 struct xdr_stream *xdr,
6400 struct nfs4_readlink_res *res)
6401 {
6402 struct compound_hdr hdr;
6403 int status;
6404
6405 status = decode_compound_hdr(xdr, &hdr);
6406 if (status)
6407 goto out;
6408 status = decode_sequence(xdr, &res->seq_res, rqstp);
6409 if (status)
6410 goto out;
6411 status = decode_putfh(xdr);
6412 if (status)
6413 goto out;
6414 status = decode_readlink(xdr, rqstp);
6415 out:
6416 return status;
6417 }
6418
6419 /*
6420 * Decode READDIR response
6421 */
6422 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6423 struct nfs4_readdir_res *res)
6424 {
6425 struct compound_hdr hdr;
6426 int status;
6427
6428 status = decode_compound_hdr(xdr, &hdr);
6429 if (status)
6430 goto out;
6431 status = decode_sequence(xdr, &res->seq_res, rqstp);
6432 if (status)
6433 goto out;
6434 status = decode_putfh(xdr);
6435 if (status)
6436 goto out;
6437 status = decode_readdir(xdr, rqstp, res);
6438 out:
6439 return status;
6440 }
6441
6442 /*
6443 * Decode Read response
6444 */
6445 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6446 struct nfs_readres *res)
6447 {
6448 struct compound_hdr hdr;
6449 int status;
6450
6451 status = decode_compound_hdr(xdr, &hdr);
6452 if (status)
6453 goto out;
6454 status = decode_sequence(xdr, &res->seq_res, rqstp);
6455 if (status)
6456 goto out;
6457 status = decode_putfh(xdr);
6458 if (status)
6459 goto out;
6460 status = decode_read(xdr, rqstp, res);
6461 if (!status)
6462 status = res->count;
6463 out:
6464 return status;
6465 }
6466
6467 /*
6468 * Decode WRITE response
6469 */
6470 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6471 struct nfs_writeres *res)
6472 {
6473 struct compound_hdr hdr;
6474 int status;
6475
6476 status = decode_compound_hdr(xdr, &hdr);
6477 if (status)
6478 goto out;
6479 status = decode_sequence(xdr, &res->seq_res, rqstp);
6480 if (status)
6481 goto out;
6482 status = decode_putfh(xdr);
6483 if (status)
6484 goto out;
6485 status = decode_write(xdr, res);
6486 if (status)
6487 goto out;
6488 if (res->fattr)
6489 decode_getfattr(xdr, res->fattr, res->server);
6490 if (!status)
6491 status = res->count;
6492 out:
6493 return status;
6494 }
6495
6496 /*
6497 * Decode COMMIT response
6498 */
6499 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6500 struct nfs_commitres *res)
6501 {
6502 struct compound_hdr hdr;
6503 int status;
6504
6505 status = decode_compound_hdr(xdr, &hdr);
6506 if (status)
6507 goto out;
6508 status = decode_sequence(xdr, &res->seq_res, rqstp);
6509 if (status)
6510 goto out;
6511 status = decode_putfh(xdr);
6512 if (status)
6513 goto out;
6514 status = decode_commit(xdr, res);
6515 out:
6516 return status;
6517 }
6518
6519 /*
6520 * Decode FSINFO response
6521 */
6522 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6523 struct nfs4_fsinfo_res *res)
6524 {
6525 struct compound_hdr hdr;
6526 int status;
6527
6528 status = decode_compound_hdr(xdr, &hdr);
6529 if (!status)
6530 status = decode_sequence(xdr, &res->seq_res, req);
6531 if (!status)
6532 status = decode_putfh(xdr);
6533 if (!status)
6534 status = decode_fsinfo(xdr, res->fsinfo);
6535 return status;
6536 }
6537
6538 /*
6539 * Decode PATHCONF response
6540 */
6541 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6542 struct nfs4_pathconf_res *res)
6543 {
6544 struct compound_hdr hdr;
6545 int status;
6546
6547 status = decode_compound_hdr(xdr, &hdr);
6548 if (!status)
6549 status = decode_sequence(xdr, &res->seq_res, req);
6550 if (!status)
6551 status = decode_putfh(xdr);
6552 if (!status)
6553 status = decode_pathconf(xdr, res->pathconf);
6554 return status;
6555 }
6556
6557 /*
6558 * Decode STATFS response
6559 */
6560 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6561 struct nfs4_statfs_res *res)
6562 {
6563 struct compound_hdr hdr;
6564 int status;
6565
6566 status = decode_compound_hdr(xdr, &hdr);
6567 if (!status)
6568 status = decode_sequence(xdr, &res->seq_res, req);
6569 if (!status)
6570 status = decode_putfh(xdr);
6571 if (!status)
6572 status = decode_statfs(xdr, res->fsstat);
6573 return status;
6574 }
6575
6576 /*
6577 * Decode GETATTR_BITMAP response
6578 */
6579 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6580 struct xdr_stream *xdr,
6581 struct nfs4_server_caps_res *res)
6582 {
6583 struct compound_hdr hdr;
6584 int status;
6585
6586 status = decode_compound_hdr(xdr, &hdr);
6587 if (status)
6588 goto out;
6589 status = decode_sequence(xdr, &res->seq_res, req);
6590 if (status)
6591 goto out;
6592 status = decode_putfh(xdr);
6593 if (status)
6594 goto out;
6595 status = decode_server_caps(xdr, res);
6596 out:
6597 return status;
6598 }
6599
6600 /*
6601 * Decode RENEW response
6602 */
6603 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6604 void *__unused)
6605 {
6606 struct compound_hdr hdr;
6607 int status;
6608
6609 status = decode_compound_hdr(xdr, &hdr);
6610 if (!status)
6611 status = decode_renew(xdr);
6612 return status;
6613 }
6614
6615 /*
6616 * Decode SETCLIENTID response
6617 */
6618 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6619 struct xdr_stream *xdr,
6620 struct nfs4_setclientid_res *res)
6621 {
6622 struct compound_hdr hdr;
6623 int status;
6624
6625 status = decode_compound_hdr(xdr, &hdr);
6626 if (!status)
6627 status = decode_setclientid(xdr, res);
6628 return status;
6629 }
6630
6631 /*
6632 * Decode SETCLIENTID_CONFIRM response
6633 */
6634 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6635 struct xdr_stream *xdr,
6636 struct nfs_fsinfo *fsinfo)
6637 {
6638 struct compound_hdr hdr;
6639 int status;
6640
6641 status = decode_compound_hdr(xdr, &hdr);
6642 if (!status)
6643 status = decode_setclientid_confirm(xdr);
6644 if (!status)
6645 status = decode_putrootfh(xdr);
6646 if (!status)
6647 status = decode_fsinfo(xdr, fsinfo);
6648 return status;
6649 }
6650
6651 /*
6652 * Decode DELEGRETURN response
6653 */
6654 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6655 struct xdr_stream *xdr,
6656 struct nfs4_delegreturnres *res)
6657 {
6658 struct compound_hdr hdr;
6659 int status;
6660
6661 status = decode_compound_hdr(xdr, &hdr);
6662 if (status)
6663 goto out;
6664 status = decode_sequence(xdr, &res->seq_res, rqstp);
6665 if (status)
6666 goto out;
6667 status = decode_putfh(xdr);
6668 if (status != 0)
6669 goto out;
6670 status = decode_getfattr(xdr, res->fattr, res->server);
6671 if (status != 0)
6672 goto out;
6673 status = decode_delegreturn(xdr);
6674 out:
6675 return status;
6676 }
6677
6678 /*
6679 * Decode FS_LOCATIONS response
6680 */
6681 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6682 struct xdr_stream *xdr,
6683 struct nfs4_fs_locations_res *res)
6684 {
6685 struct compound_hdr hdr;
6686 int status;
6687
6688 status = decode_compound_hdr(xdr, &hdr);
6689 if (status)
6690 goto out;
6691 status = decode_sequence(xdr, &res->seq_res, req);
6692 if (status)
6693 goto out;
6694 status = decode_putfh(xdr);
6695 if (status)
6696 goto out;
6697 status = decode_lookup(xdr);
6698 if (status)
6699 goto out;
6700 xdr_enter_page(xdr, PAGE_SIZE);
6701 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6702 NULL, res->fs_locations,
6703 res->fs_locations->server);
6704 out:
6705 return status;
6706 }
6707
6708 /*
6709 * Decode SECINFO response
6710 */
6711 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6712 struct xdr_stream *xdr,
6713 struct nfs4_secinfo_res *res)
6714 {
6715 struct compound_hdr hdr;
6716 int status;
6717
6718 status = decode_compound_hdr(xdr, &hdr);
6719 if (status)
6720 goto out;
6721 status = decode_sequence(xdr, &res->seq_res, rqstp);
6722 if (status)
6723 goto out;
6724 status = decode_putfh(xdr);
6725 if (status)
6726 goto out;
6727 status = decode_secinfo(xdr, res);
6728 out:
6729 return status;
6730 }
6731
6732 #if defined(CONFIG_NFS_V4_1)
6733 /*
6734 * Decode BIND_CONN_TO_SESSION response
6735 */
6736 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6737 struct xdr_stream *xdr,
6738 void *res)
6739 {
6740 struct compound_hdr hdr;
6741 int status;
6742
6743 status = decode_compound_hdr(xdr, &hdr);
6744 if (!status)
6745 status = decode_bind_conn_to_session(xdr, res);
6746 return status;
6747 }
6748
6749 /*
6750 * Decode EXCHANGE_ID response
6751 */
6752 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6753 struct xdr_stream *xdr,
6754 void *res)
6755 {
6756 struct compound_hdr hdr;
6757 int status;
6758
6759 status = decode_compound_hdr(xdr, &hdr);
6760 if (!status)
6761 status = decode_exchange_id(xdr, res);
6762 return status;
6763 }
6764
6765 /*
6766 * Decode CREATE_SESSION response
6767 */
6768 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6769 struct xdr_stream *xdr,
6770 struct nfs41_create_session_res *res)
6771 {
6772 struct compound_hdr hdr;
6773 int status;
6774
6775 status = decode_compound_hdr(xdr, &hdr);
6776 if (!status)
6777 status = decode_create_session(xdr, res);
6778 return status;
6779 }
6780
6781 /*
6782 * Decode DESTROY_SESSION response
6783 */
6784 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6785 struct xdr_stream *xdr,
6786 void *res)
6787 {
6788 struct compound_hdr hdr;
6789 int status;
6790
6791 status = decode_compound_hdr(xdr, &hdr);
6792 if (!status)
6793 status = decode_destroy_session(xdr, res);
6794 return status;
6795 }
6796
6797 /*
6798 * Decode DESTROY_CLIENTID response
6799 */
6800 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6801 struct xdr_stream *xdr,
6802 void *res)
6803 {
6804 struct compound_hdr hdr;
6805 int status;
6806
6807 status = decode_compound_hdr(xdr, &hdr);
6808 if (!status)
6809 status = decode_destroy_clientid(xdr, res);
6810 return status;
6811 }
6812
6813 /*
6814 * Decode SEQUENCE response
6815 */
6816 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6817 struct xdr_stream *xdr,
6818 struct nfs4_sequence_res *res)
6819 {
6820 struct compound_hdr hdr;
6821 int status;
6822
6823 status = decode_compound_hdr(xdr, &hdr);
6824 if (!status)
6825 status = decode_sequence(xdr, res, rqstp);
6826 return status;
6827 }
6828
6829 /*
6830 * Decode GET_LEASE_TIME response
6831 */
6832 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6833 struct xdr_stream *xdr,
6834 struct nfs4_get_lease_time_res *res)
6835 {
6836 struct compound_hdr hdr;
6837 int status;
6838
6839 status = decode_compound_hdr(xdr, &hdr);
6840 if (!status)
6841 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6842 if (!status)
6843 status = decode_putrootfh(xdr);
6844 if (!status)
6845 status = decode_fsinfo(xdr, res->lr_fsinfo);
6846 return status;
6847 }
6848
6849 /*
6850 * Decode RECLAIM_COMPLETE response
6851 */
6852 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6853 struct xdr_stream *xdr,
6854 struct nfs41_reclaim_complete_res *res)
6855 {
6856 struct compound_hdr hdr;
6857 int status;
6858
6859 status = decode_compound_hdr(xdr, &hdr);
6860 if (!status)
6861 status = decode_sequence(xdr, &res->seq_res, rqstp);
6862 if (!status)
6863 status = decode_reclaim_complete(xdr, (void *)NULL);
6864 return status;
6865 }
6866
6867 /*
6868 * Decode GETDEVICELIST response
6869 */
6870 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6871 struct xdr_stream *xdr,
6872 struct nfs4_getdevicelist_res *res)
6873 {
6874 struct compound_hdr hdr;
6875 int status;
6876
6877 dprintk("encoding getdevicelist!\n");
6878
6879 status = decode_compound_hdr(xdr, &hdr);
6880 if (status != 0)
6881 goto out;
6882 status = decode_sequence(xdr, &res->seq_res, rqstp);
6883 if (status != 0)
6884 goto out;
6885 status = decode_putfh(xdr);
6886 if (status != 0)
6887 goto out;
6888 status = decode_getdevicelist(xdr, res->devlist);
6889 out:
6890 return status;
6891 }
6892
6893 /*
6894 * Decode GETDEVINFO response
6895 */
6896 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6897 struct xdr_stream *xdr,
6898 struct nfs4_getdeviceinfo_res *res)
6899 {
6900 struct compound_hdr hdr;
6901 int status;
6902
6903 status = decode_compound_hdr(xdr, &hdr);
6904 if (status != 0)
6905 goto out;
6906 status = decode_sequence(xdr, &res->seq_res, rqstp);
6907 if (status != 0)
6908 goto out;
6909 status = decode_getdeviceinfo(xdr, res->pdev);
6910 out:
6911 return status;
6912 }
6913
6914 /*
6915 * Decode LAYOUTGET response
6916 */
6917 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6918 struct xdr_stream *xdr,
6919 struct nfs4_layoutget_res *res)
6920 {
6921 struct compound_hdr hdr;
6922 int status;
6923
6924 status = decode_compound_hdr(xdr, &hdr);
6925 if (status)
6926 goto out;
6927 status = decode_sequence(xdr, &res->seq_res, rqstp);
6928 if (status)
6929 goto out;
6930 status = decode_putfh(xdr);
6931 if (status)
6932 goto out;
6933 status = decode_layoutget(xdr, rqstp, res);
6934 out:
6935 return status;
6936 }
6937
6938 /*
6939 * Decode LAYOUTRETURN response
6940 */
6941 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6942 struct xdr_stream *xdr,
6943 struct nfs4_layoutreturn_res *res)
6944 {
6945 struct compound_hdr hdr;
6946 int status;
6947
6948 status = decode_compound_hdr(xdr, &hdr);
6949 if (status)
6950 goto out;
6951 status = decode_sequence(xdr, &res->seq_res, rqstp);
6952 if (status)
6953 goto out;
6954 status = decode_putfh(xdr);
6955 if (status)
6956 goto out;
6957 status = decode_layoutreturn(xdr, res);
6958 out:
6959 return status;
6960 }
6961
6962 /*
6963 * Decode LAYOUTCOMMIT response
6964 */
6965 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6966 struct xdr_stream *xdr,
6967 struct nfs4_layoutcommit_res *res)
6968 {
6969 struct compound_hdr hdr;
6970 int status;
6971
6972 status = decode_compound_hdr(xdr, &hdr);
6973 if (status)
6974 goto out;
6975 status = decode_sequence(xdr, &res->seq_res, rqstp);
6976 if (status)
6977 goto out;
6978 status = decode_putfh(xdr);
6979 if (status)
6980 goto out;
6981 status = decode_layoutcommit(xdr, rqstp, res);
6982 if (status)
6983 goto out;
6984 decode_getfattr(xdr, res->fattr, res->server);
6985 out:
6986 return status;
6987 }
6988
6989 /*
6990 * Decode SECINFO_NO_NAME response
6991 */
6992 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
6993 struct xdr_stream *xdr,
6994 struct nfs4_secinfo_res *res)
6995 {
6996 struct compound_hdr hdr;
6997 int status;
6998
6999 status = decode_compound_hdr(xdr, &hdr);
7000 if (status)
7001 goto out;
7002 status = decode_sequence(xdr, &res->seq_res, rqstp);
7003 if (status)
7004 goto out;
7005 status = decode_putrootfh(xdr);
7006 if (status)
7007 goto out;
7008 status = decode_secinfo_no_name(xdr, res);
7009 out:
7010 return status;
7011 }
7012
7013 /*
7014 * Decode TEST_STATEID response
7015 */
7016 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7017 struct xdr_stream *xdr,
7018 struct nfs41_test_stateid_res *res)
7019 {
7020 struct compound_hdr hdr;
7021 int status;
7022
7023 status = decode_compound_hdr(xdr, &hdr);
7024 if (status)
7025 goto out;
7026 status = decode_sequence(xdr, &res->seq_res, rqstp);
7027 if (status)
7028 goto out;
7029 status = decode_test_stateid(xdr, res);
7030 out:
7031 return status;
7032 }
7033
7034 /*
7035 * Decode FREE_STATEID response
7036 */
7037 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7038 struct xdr_stream *xdr,
7039 struct nfs41_free_stateid_res *res)
7040 {
7041 struct compound_hdr hdr;
7042 int status;
7043
7044 status = decode_compound_hdr(xdr, &hdr);
7045 if (status)
7046 goto out;
7047 status = decode_sequence(xdr, &res->seq_res, rqstp);
7048 if (status)
7049 goto out;
7050 status = decode_free_stateid(xdr, res);
7051 out:
7052 return status;
7053 }
7054 #endif /* CONFIG_NFS_V4_1 */
7055
7056 /**
7057 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7058 * the local page cache.
7059 * @xdr: XDR stream where entry resides
7060 * @entry: buffer to fill in with entry data
7061 * @plus: boolean indicating whether this should be a readdirplus entry
7062 *
7063 * Returns zero if successful, otherwise a negative errno value is
7064 * returned.
7065 *
7066 * This function is not invoked during READDIR reply decoding, but
7067 * rather whenever an application invokes the getdents(2) system call
7068 * on a directory already in our cache.
7069 */
7070 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7071 int plus)
7072 {
7073 unsigned int savep;
7074 uint32_t bitmap[3] = {0};
7075 uint32_t len;
7076 __be32 *p = xdr_inline_decode(xdr, 4);
7077 if (unlikely(!p))
7078 goto out_overflow;
7079 if (*p == xdr_zero) {
7080 p = xdr_inline_decode(xdr, 4);
7081 if (unlikely(!p))
7082 goto out_overflow;
7083 if (*p == xdr_zero)
7084 return -EAGAIN;
7085 entry->eof = 1;
7086 return -EBADCOOKIE;
7087 }
7088
7089 p = xdr_inline_decode(xdr, 12);
7090 if (unlikely(!p))
7091 goto out_overflow;
7092 entry->prev_cookie = entry->cookie;
7093 p = xdr_decode_hyper(p, &entry->cookie);
7094 entry->len = be32_to_cpup(p);
7095
7096 p = xdr_inline_decode(xdr, entry->len);
7097 if (unlikely(!p))
7098 goto out_overflow;
7099 entry->name = (const char *) p;
7100
7101 /*
7102 * In case the server doesn't return an inode number,
7103 * we fake one here. (We don't use inode number 0,
7104 * since glibc seems to choke on it...)
7105 */
7106 entry->ino = 1;
7107 entry->fattr->valid = 0;
7108
7109 if (decode_attr_bitmap(xdr, bitmap) < 0)
7110 goto out_overflow;
7111
7112 if (decode_attr_length(xdr, &len, &savep) < 0)
7113 goto out_overflow;
7114
7115 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7116 NULL, entry->server) < 0)
7117 goto out_overflow;
7118 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7119 entry->ino = entry->fattr->mounted_on_fileid;
7120 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7121 entry->ino = entry->fattr->fileid;
7122
7123 entry->d_type = DT_UNKNOWN;
7124 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7125 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7126
7127 return 0;
7128
7129 out_overflow:
7130 print_overflow_msg(__func__, xdr);
7131 return -EAGAIN;
7132 }
7133
7134 /*
7135 * We need to translate between nfs status return values and
7136 * the local errno values which may not be the same.
7137 */
7138 static struct {
7139 int stat;
7140 int errno;
7141 } nfs_errtbl[] = {
7142 { NFS4_OK, 0 },
7143 { NFS4ERR_PERM, -EPERM },
7144 { NFS4ERR_NOENT, -ENOENT },
7145 { NFS4ERR_IO, -errno_NFSERR_IO},
7146 { NFS4ERR_NXIO, -ENXIO },
7147 { NFS4ERR_ACCESS, -EACCES },
7148 { NFS4ERR_EXIST, -EEXIST },
7149 { NFS4ERR_XDEV, -EXDEV },
7150 { NFS4ERR_NOTDIR, -ENOTDIR },
7151 { NFS4ERR_ISDIR, -EISDIR },
7152 { NFS4ERR_INVAL, -EINVAL },
7153 { NFS4ERR_FBIG, -EFBIG },
7154 { NFS4ERR_NOSPC, -ENOSPC },
7155 { NFS4ERR_ROFS, -EROFS },
7156 { NFS4ERR_MLINK, -EMLINK },
7157 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7158 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7159 { NFS4ERR_DQUOT, -EDQUOT },
7160 { NFS4ERR_STALE, -ESTALE },
7161 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7162 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7163 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7164 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7165 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7166 { NFS4ERR_BADTYPE, -EBADTYPE },
7167 { NFS4ERR_LOCKED, -EAGAIN },
7168 { NFS4ERR_SYMLINK, -ELOOP },
7169 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7170 { NFS4ERR_DEADLOCK, -EDEADLK },
7171 { -1, -EIO }
7172 };
7173
7174 /*
7175 * Convert an NFS error code to a local one.
7176 * This one is used jointly by NFSv2 and NFSv3.
7177 */
7178 static int
7179 nfs4_stat_to_errno(int stat)
7180 {
7181 int i;
7182 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7183 if (nfs_errtbl[i].stat == stat)
7184 return nfs_errtbl[i].errno;
7185 }
7186 if (stat <= 10000 || stat > 10100) {
7187 /* The server is looney tunes. */
7188 return -EREMOTEIO;
7189 }
7190 /* If we cannot translate the error, the recovery routines should
7191 * handle it.
7192 * Note: remaining NFSv4 error codes have values > 10000, so should
7193 * not conflict with native Linux error codes.
7194 */
7195 return -stat;
7196 }
7197
7198 #define PROC(proc, argtype, restype) \
7199 [NFSPROC4_CLNT_##proc] = { \
7200 .p_proc = NFSPROC4_COMPOUND, \
7201 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7202 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7203 .p_arglen = NFS4_##argtype##_sz, \
7204 .p_replen = NFS4_##restype##_sz, \
7205 .p_statidx = NFSPROC4_CLNT_##proc, \
7206 .p_name = #proc, \
7207 }
7208
7209 struct rpc_procinfo nfs4_procedures[] = {
7210 PROC(READ, enc_read, dec_read),
7211 PROC(WRITE, enc_write, dec_write),
7212 PROC(COMMIT, enc_commit, dec_commit),
7213 PROC(OPEN, enc_open, dec_open),
7214 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7215 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7216 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7217 PROC(CLOSE, enc_close, dec_close),
7218 PROC(SETATTR, enc_setattr, dec_setattr),
7219 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7220 PROC(RENEW, enc_renew, dec_renew),
7221 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7222 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7223 PROC(LOCK, enc_lock, dec_lock),
7224 PROC(LOCKT, enc_lockt, dec_lockt),
7225 PROC(LOCKU, enc_locku, dec_locku),
7226 PROC(ACCESS, enc_access, dec_access),
7227 PROC(GETATTR, enc_getattr, dec_getattr),
7228 PROC(LOOKUP, enc_lookup, dec_lookup),
7229 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7230 PROC(REMOVE, enc_remove, dec_remove),
7231 PROC(RENAME, enc_rename, dec_rename),
7232 PROC(LINK, enc_link, dec_link),
7233 PROC(SYMLINK, enc_symlink, dec_symlink),
7234 PROC(CREATE, enc_create, dec_create),
7235 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7236 PROC(STATFS, enc_statfs, dec_statfs),
7237 PROC(READLINK, enc_readlink, dec_readlink),
7238 PROC(READDIR, enc_readdir, dec_readdir),
7239 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7240 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7241 PROC(GETACL, enc_getacl, dec_getacl),
7242 PROC(SETACL, enc_setacl, dec_setacl),
7243 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7244 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7245 PROC(SECINFO, enc_secinfo, dec_secinfo),
7246 #if defined(CONFIG_NFS_V4_1)
7247 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7248 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7249 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7250 PROC(SEQUENCE, enc_sequence, dec_sequence),
7251 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7252 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7253 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7254 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7255 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7256 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7257 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7258 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7259 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7260 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7261 PROC(BIND_CONN_TO_SESSION,
7262 enc_bind_conn_to_session, dec_bind_conn_to_session),
7263 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7264 #endif /* CONFIG_NFS_V4_1 */
7265 };
7266
7267 const struct rpc_version nfs_version4 = {
7268 .number = 4,
7269 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7270 .procs = nfs4_procedures
7271 };
7272
7273 /*
7274 * Local variables:
7275 * c-basic-offset: 8
7276 * End:
7277 */
Linux kernel - Deliverables
This page took 0.19564 seconds and 5 git commands to generate.