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NFS: Client implementation of Labeled-NFS
[mirror_ubuntu-artful-kernel.git] / fs / nfs / nfs4xdr.c
1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/in.h>
44 #include <linux/pagemap.h>
45 #include <linux/proc_fs.h>
46 #include <linux/kdev_t.h>
47 #include <linux/module.h>
48 #include <linux/utsname.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/sunrpc/msg_prot.h>
51 #include <linux/sunrpc/gss_api.h>
52 #include <linux/nfs.h>
53 #include <linux/nfs4.h>
54 #include <linux/nfs_fs.h>
55 #include <linux/nfs_idmap.h>
56
57 #include "nfs4_fs.h"
58 #include "internal.h"
59 #include "nfs4session.h"
60 #include "pnfs.h"
61 #include "netns.h"
62
63 #define NFSDBG_FACILITY NFSDBG_XDR
64
65 /* Mapping from NFS error code to "errno" error code. */
66 #define errno_NFSERR_IO EIO
67
68 static int nfs4_stat_to_errno(int);
69
70 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
71 #ifdef DEBUG
72 #define NFS4_MAXTAGLEN 20
73 #else
74 #define NFS4_MAXTAGLEN 0
75 #endif
76
77 /* lock,open owner id:
78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
79 */
80 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
81 #define lock_owner_id_maxsz (1 + 1 + 4)
82 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
83 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85 #define op_encode_hdr_maxsz (1)
86 #define op_decode_hdr_maxsz (2)
87 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
92 (NFS4_FHSIZE >> 2))
93 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
94 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
97 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
99 #define nfs4_fattr_bitmap_maxsz 4
100 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
101 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
103 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
106 /* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
107 #define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
108 #define encode_readdir_space 24
109 #define encode_readdir_bitmask_sz 3
110 #else
111 #define nfs4_label_maxsz 0
112 #define encode_readdir_space 20
113 #define encode_readdir_bitmask_sz 2
114 #endif
115 /* We support only one layout type per file system */
116 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
117 /* This is based on getfattr, which uses the most attributes: */
118 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
119 3 + 3 + 3 + nfs4_owner_maxsz + \
120 nfs4_group_maxsz + nfs4_label_maxsz + \
121 decode_mdsthreshold_maxsz))
122 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
123 nfs4_fattr_value_maxsz)
124 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
125 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
126 1 + 2 + 1 + \
127 nfs4_owner_maxsz + \
128 nfs4_group_maxsz + \
129 nfs4_label_maxsz + \
130 4 + 4)
131 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
132 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
133 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
134 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
135 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
136 /* The 5 accounts for the PNFS attributes, and assumes that at most three
137 * layout types will be returned.
138 */
139 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
140 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
141 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
142 #define decode_renew_maxsz (op_decode_hdr_maxsz)
143 #define encode_setclientid_maxsz \
144 (op_encode_hdr_maxsz + \
145 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
146 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
147 1 /* sc_prog */ + \
148 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
149 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
150 1) /* sc_cb_ident */
151 #define decode_setclientid_maxsz \
152 (op_decode_hdr_maxsz + \
153 2 + \
154 1024) /* large value for CLID_INUSE */
155 #define encode_setclientid_confirm_maxsz \
156 (op_encode_hdr_maxsz + \
157 3 + (NFS4_VERIFIER_SIZE >> 2))
158 #define decode_setclientid_confirm_maxsz \
159 (op_decode_hdr_maxsz)
160 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
161 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
162 #define encode_share_access_maxsz \
163 (2)
164 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
165 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
166 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
167 #define encode_open_maxsz (op_encode_hdr_maxsz + \
168 2 + encode_share_access_maxsz + 2 + \
169 open_owner_id_maxsz + \
170 encode_opentype_maxsz + \
171 encode_claim_null_maxsz)
172 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
173 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
174 decode_ace_maxsz)
175 #define decode_change_info_maxsz (5)
176 #define decode_open_maxsz (op_decode_hdr_maxsz + \
177 decode_stateid_maxsz + \
178 decode_change_info_maxsz + 1 + \
179 nfs4_fattr_bitmap_maxsz + \
180 decode_delegation_maxsz)
181 #define encode_open_confirm_maxsz \
182 (op_encode_hdr_maxsz + \
183 encode_stateid_maxsz + 1)
184 #define decode_open_confirm_maxsz \
185 (op_decode_hdr_maxsz + \
186 decode_stateid_maxsz)
187 #define encode_open_downgrade_maxsz \
188 (op_encode_hdr_maxsz + \
189 encode_stateid_maxsz + 1 + \
190 encode_share_access_maxsz)
191 #define decode_open_downgrade_maxsz \
192 (op_decode_hdr_maxsz + \
193 decode_stateid_maxsz)
194 #define encode_close_maxsz (op_encode_hdr_maxsz + \
195 1 + encode_stateid_maxsz)
196 #define decode_close_maxsz (op_decode_hdr_maxsz + \
197 decode_stateid_maxsz)
198 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
199 encode_stateid_maxsz + \
200 encode_attrs_maxsz)
201 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
202 nfs4_fattr_bitmap_maxsz)
203 #define encode_read_maxsz (op_encode_hdr_maxsz + \
204 encode_stateid_maxsz + 3)
205 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
206 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
207 2 + encode_verifier_maxsz + 5 + \
208 nfs4_label_maxsz)
209 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
210 decode_verifier_maxsz + \
211 nfs4_label_maxsz + nfs4_fattr_maxsz)
212 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
213 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
214 #define encode_write_maxsz (op_encode_hdr_maxsz + \
215 encode_stateid_maxsz + 4)
216 #define decode_write_maxsz (op_decode_hdr_maxsz + \
217 2 + decode_verifier_maxsz)
218 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
219 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
220 decode_verifier_maxsz)
221 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
222 nfs4_name_maxsz)
223 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
224 decode_change_info_maxsz)
225 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
226 2 * nfs4_name_maxsz)
227 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
228 decode_change_info_maxsz + \
229 decode_change_info_maxsz)
230 #define encode_link_maxsz (op_encode_hdr_maxsz + \
231 nfs4_name_maxsz)
232 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
233 #define encode_lockowner_maxsz (7)
234 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
235 7 + \
236 1 + encode_stateid_maxsz + 1 + \
237 encode_lockowner_maxsz)
238 #define decode_lock_denied_maxsz \
239 (8 + decode_lockowner_maxsz)
240 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
241 decode_lock_denied_maxsz)
242 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
243 encode_lockowner_maxsz)
244 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
245 decode_lock_denied_maxsz)
246 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
247 encode_stateid_maxsz + \
248 4)
249 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
250 decode_stateid_maxsz)
251 #define encode_release_lockowner_maxsz \
252 (op_encode_hdr_maxsz + \
253 encode_lockowner_maxsz)
254 #define decode_release_lockowner_maxsz \
255 (op_decode_hdr_maxsz)
256 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
257 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
258 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
259 1 + nfs4_name_maxsz + \
260 1 + \
261 nfs4_fattr_maxsz)
262 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
263 #define encode_create_maxsz (op_encode_hdr_maxsz + \
264 1 + 2 + nfs4_name_maxsz + \
265 encode_attrs_maxsz)
266 #define decode_create_maxsz (op_decode_hdr_maxsz + \
267 decode_change_info_maxsz + \
268 nfs4_fattr_bitmap_maxsz)
269 #define encode_statfs_maxsz (encode_getattr_maxsz)
270 #define decode_statfs_maxsz (decode_getattr_maxsz)
271 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
272 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
273 #define encode_getacl_maxsz (encode_getattr_maxsz)
274 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
275 nfs4_fattr_bitmap_maxsz + 1)
276 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
277 encode_stateid_maxsz + 3)
278 #define decode_setacl_maxsz (decode_setattr_maxsz)
279 #define encode_fs_locations_maxsz \
280 (encode_getattr_maxsz)
281 #define decode_fs_locations_maxsz \
282 (0)
283 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
284 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
285
286 #if defined(CONFIG_NFS_V4_1)
287 #define NFS4_MAX_MACHINE_NAME_LEN (64)
288 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
289 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
290
291 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
292 encode_verifier_maxsz + \
293 1 /* co_ownerid.len */ + \
294 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
295 1 /* flags */ + \
296 1 /* spa_how */ + \
297 0 /* SP4_NONE (for now) */ + \
298 1 /* implementation id array of size 1 */ + \
299 1 /* nii_domain */ + \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
301 1 /* nii_name */ + \
302 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
303 3 /* nii_date */)
304 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
305 2 /* eir_clientid */ + \
306 1 /* eir_sequenceid */ + \
307 1 /* eir_flags */ + \
308 1 /* spr_how */ + \
309 0 /* SP4_NONE (for now) */ + \
310 2 /* eir_server_owner.so_minor_id */ + \
311 /* eir_server_owner.so_major_id<> */ \
312 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
313 /* eir_server_scope<> */ \
314 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
315 1 /* eir_server_impl_id array length */ + \
316 1 /* nii_domain */ + \
317 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
318 1 /* nii_name */ + \
319 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
320 3 /* nii_date */)
321 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
322 #define decode_channel_attrs_maxsz (6 + \
323 1 /* ca_rdma_ird.len */ + \
324 1 /* ca_rdma_ird */)
325 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
326 2 /* csa_clientid */ + \
327 1 /* csa_sequence */ + \
328 1 /* csa_flags */ + \
329 encode_channel_attrs_maxsz + \
330 encode_channel_attrs_maxsz + \
331 1 /* csa_cb_program */ + \
332 1 /* csa_sec_parms.len (1) */ + \
333 1 /* cb_secflavor (AUTH_SYS) */ + \
334 1 /* stamp */ + \
335 1 /* machinename.len */ + \
336 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
337 1 /* uid */ + \
338 1 /* gid */ + \
339 1 /* gids.len (0) */)
340 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
341 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
342 1 /* csr_sequence */ + \
343 1 /* csr_flags */ + \
344 decode_channel_attrs_maxsz + \
345 decode_channel_attrs_maxsz)
346 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
347 /* bctsa_sessid */ \
348 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
349 1 /* bctsa_dir */ + \
350 1 /* bctsa_use_conn_in_rdma_mode */)
351 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
352 /* bctsr_sessid */ \
353 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
354 1 /* bctsr_dir */ + \
355 1 /* bctsr_use_conn_in_rdma_mode */)
356 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
357 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
358 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
359 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
360 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
361 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
362 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
363 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
364 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
365 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
366 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
367 encode_verifier_maxsz)
368 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
369 2 /* nfs_cookie4 gdlr_cookie */ + \
370 decode_verifier_maxsz \
371 /* verifier4 gdlr_verifier */ + \
372 1 /* gdlr_deviceid_list count */ + \
373 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
374 NFS4_DEVICEID4_SIZE) \
375 /* gdlr_deviceid_list */ + \
376 1 /* bool gdlr_eof */)
377 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
378 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
379 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
380 1 /* layout type */ + \
381 1 /* opaque devaddr4 length */ + \
382 /* devaddr4 payload is read into page */ \
383 1 /* notification bitmap length */ + \
384 1 /* notification bitmap */)
385 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
386 encode_stateid_maxsz)
387 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
388 decode_stateid_maxsz + \
389 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
390 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
391 2 /* offset */ + \
392 2 /* length */ + \
393 1 /* reclaim */ + \
394 encode_stateid_maxsz + \
395 1 /* new offset (true) */ + \
396 2 /* last byte written */ + \
397 1 /* nt_timechanged (false) */ + \
398 1 /* layoutupdate4 layout type */ + \
399 1 /* NULL filelayout layoutupdate4 payload */)
400 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
401 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
402 encode_stateid_maxsz + \
403 1 /* FIXME: opaque lrf_body always empty at the moment */)
404 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
405 1 + decode_stateid_maxsz)
406 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
407 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
408 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
409 XDR_QUADLEN(NFS4_STATEID_SIZE))
410 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
411 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
412 XDR_QUADLEN(NFS4_STATEID_SIZE))
413 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
414 #else /* CONFIG_NFS_V4_1 */
415 #define encode_sequence_maxsz 0
416 #define decode_sequence_maxsz 0
417 #endif /* CONFIG_NFS_V4_1 */
418
419 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
420 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
421 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
422 encode_sequence_maxsz + \
423 encode_putfh_maxsz + \
424 encode_read_maxsz)
425 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
426 decode_sequence_maxsz + \
427 decode_putfh_maxsz + \
428 decode_read_maxsz)
429 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
430 encode_sequence_maxsz + \
431 encode_putfh_maxsz + \
432 encode_readlink_maxsz)
433 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
434 decode_sequence_maxsz + \
435 decode_putfh_maxsz + \
436 decode_readlink_maxsz)
437 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
438 encode_sequence_maxsz + \
439 encode_putfh_maxsz + \
440 encode_readdir_maxsz)
441 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
442 decode_sequence_maxsz + \
443 decode_putfh_maxsz + \
444 decode_readdir_maxsz)
445 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
446 encode_sequence_maxsz + \
447 encode_putfh_maxsz + \
448 encode_write_maxsz + \
449 encode_getattr_maxsz)
450 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
451 decode_sequence_maxsz + \
452 decode_putfh_maxsz + \
453 decode_write_maxsz + \
454 decode_getattr_maxsz)
455 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
456 encode_sequence_maxsz + \
457 encode_putfh_maxsz + \
458 encode_commit_maxsz)
459 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
460 decode_sequence_maxsz + \
461 decode_putfh_maxsz + \
462 decode_commit_maxsz)
463 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
464 encode_sequence_maxsz + \
465 encode_putfh_maxsz + \
466 encode_open_maxsz + \
467 encode_access_maxsz + \
468 encode_getfh_maxsz + \
469 encode_getattr_maxsz)
470 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
471 decode_sequence_maxsz + \
472 decode_putfh_maxsz + \
473 decode_open_maxsz + \
474 decode_access_maxsz + \
475 decode_getfh_maxsz + \
476 decode_getattr_maxsz)
477 #define NFS4_enc_open_confirm_sz \
478 (compound_encode_hdr_maxsz + \
479 encode_putfh_maxsz + \
480 encode_open_confirm_maxsz)
481 #define NFS4_dec_open_confirm_sz \
482 (compound_decode_hdr_maxsz + \
483 decode_putfh_maxsz + \
484 decode_open_confirm_maxsz)
485 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
486 encode_sequence_maxsz + \
487 encode_putfh_maxsz + \
488 encode_open_maxsz + \
489 encode_access_maxsz + \
490 encode_getattr_maxsz)
491 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
492 decode_sequence_maxsz + \
493 decode_putfh_maxsz + \
494 decode_open_maxsz + \
495 decode_access_maxsz + \
496 decode_getattr_maxsz)
497 #define NFS4_enc_open_downgrade_sz \
498 (compound_encode_hdr_maxsz + \
499 encode_sequence_maxsz + \
500 encode_putfh_maxsz + \
501 encode_open_downgrade_maxsz + \
502 encode_getattr_maxsz)
503 #define NFS4_dec_open_downgrade_sz \
504 (compound_decode_hdr_maxsz + \
505 decode_sequence_maxsz + \
506 decode_putfh_maxsz + \
507 decode_open_downgrade_maxsz + \
508 decode_getattr_maxsz)
509 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
510 encode_sequence_maxsz + \
511 encode_putfh_maxsz + \
512 encode_close_maxsz + \
513 encode_getattr_maxsz)
514 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
515 decode_sequence_maxsz + \
516 decode_putfh_maxsz + \
517 decode_close_maxsz + \
518 decode_getattr_maxsz)
519 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
520 encode_sequence_maxsz + \
521 encode_putfh_maxsz + \
522 encode_setattr_maxsz + \
523 encode_getattr_maxsz)
524 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
525 decode_sequence_maxsz + \
526 decode_putfh_maxsz + \
527 decode_setattr_maxsz + \
528 decode_getattr_maxsz)
529 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
530 encode_sequence_maxsz + \
531 encode_putfh_maxsz + \
532 encode_fsinfo_maxsz)
533 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
534 decode_sequence_maxsz + \
535 decode_putfh_maxsz + \
536 decode_fsinfo_maxsz)
537 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
538 encode_renew_maxsz)
539 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
540 decode_renew_maxsz)
541 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
542 encode_setclientid_maxsz)
543 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
544 decode_setclientid_maxsz)
545 #define NFS4_enc_setclientid_confirm_sz \
546 (compound_encode_hdr_maxsz + \
547 encode_setclientid_confirm_maxsz)
548 #define NFS4_dec_setclientid_confirm_sz \
549 (compound_decode_hdr_maxsz + \
550 decode_setclientid_confirm_maxsz)
551 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
552 encode_sequence_maxsz + \
553 encode_putfh_maxsz + \
554 encode_lock_maxsz)
555 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
556 decode_sequence_maxsz + \
557 decode_putfh_maxsz + \
558 decode_lock_maxsz)
559 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
560 encode_sequence_maxsz + \
561 encode_putfh_maxsz + \
562 encode_lockt_maxsz)
563 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
564 decode_sequence_maxsz + \
565 decode_putfh_maxsz + \
566 decode_lockt_maxsz)
567 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
570 encode_locku_maxsz)
571 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
572 decode_sequence_maxsz + \
573 decode_putfh_maxsz + \
574 decode_locku_maxsz)
575 #define NFS4_enc_release_lockowner_sz \
576 (compound_encode_hdr_maxsz + \
577 encode_lockowner_maxsz)
578 #define NFS4_dec_release_lockowner_sz \
579 (compound_decode_hdr_maxsz + \
580 decode_lockowner_maxsz)
581 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
582 encode_sequence_maxsz + \
583 encode_putfh_maxsz + \
584 encode_access_maxsz + \
585 encode_getattr_maxsz)
586 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
587 decode_sequence_maxsz + \
588 decode_putfh_maxsz + \
589 decode_access_maxsz + \
590 decode_getattr_maxsz)
591 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
592 encode_sequence_maxsz + \
593 encode_putfh_maxsz + \
594 encode_getattr_maxsz)
595 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_getattr_maxsz)
599 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
600 encode_sequence_maxsz + \
601 encode_putfh_maxsz + \
602 encode_lookup_maxsz + \
603 encode_getattr_maxsz + \
604 encode_getfh_maxsz)
605 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
606 decode_sequence_maxsz + \
607 decode_putfh_maxsz + \
608 decode_lookup_maxsz + \
609 decode_getattr_maxsz + \
610 decode_getfh_maxsz)
611 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
612 encode_sequence_maxsz + \
613 encode_putrootfh_maxsz + \
614 encode_getattr_maxsz + \
615 encode_getfh_maxsz)
616 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
617 decode_sequence_maxsz + \
618 decode_putrootfh_maxsz + \
619 decode_getattr_maxsz + \
620 decode_getfh_maxsz)
621 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
622 encode_sequence_maxsz + \
623 encode_putfh_maxsz + \
624 encode_remove_maxsz)
625 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
626 decode_sequence_maxsz + \
627 decode_putfh_maxsz + \
628 decode_remove_maxsz)
629 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_savefh_maxsz + \
633 encode_putfh_maxsz + \
634 encode_rename_maxsz)
635 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
636 decode_sequence_maxsz + \
637 decode_putfh_maxsz + \
638 decode_savefh_maxsz + \
639 decode_putfh_maxsz + \
640 decode_rename_maxsz)
641 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
642 encode_sequence_maxsz + \
643 encode_putfh_maxsz + \
644 encode_savefh_maxsz + \
645 encode_putfh_maxsz + \
646 encode_link_maxsz + \
647 encode_restorefh_maxsz + \
648 encode_getattr_maxsz)
649 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
652 decode_savefh_maxsz + \
653 decode_putfh_maxsz + \
654 decode_link_maxsz + \
655 decode_restorefh_maxsz + \
656 decode_getattr_maxsz)
657 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
658 encode_sequence_maxsz + \
659 encode_putfh_maxsz + \
660 encode_symlink_maxsz + \
661 encode_getattr_maxsz + \
662 encode_getfh_maxsz)
663 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
664 decode_sequence_maxsz + \
665 decode_putfh_maxsz + \
666 decode_symlink_maxsz + \
667 decode_getattr_maxsz + \
668 decode_getfh_maxsz)
669 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
670 encode_sequence_maxsz + \
671 encode_putfh_maxsz + \
672 encode_create_maxsz + \
673 encode_getfh_maxsz + \
674 encode_getattr_maxsz)
675 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
676 decode_sequence_maxsz + \
677 decode_putfh_maxsz + \
678 decode_create_maxsz + \
679 decode_getfh_maxsz + \
680 decode_getattr_maxsz)
681 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
682 encode_sequence_maxsz + \
683 encode_putfh_maxsz + \
684 encode_getattr_maxsz)
685 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
686 decode_sequence_maxsz + \
687 decode_putfh_maxsz + \
688 decode_getattr_maxsz)
689 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
690 encode_sequence_maxsz + \
691 encode_putfh_maxsz + \
692 encode_statfs_maxsz)
693 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_putfh_maxsz + \
696 decode_statfs_maxsz)
697 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
698 encode_sequence_maxsz + \
699 encode_putfh_maxsz + \
700 encode_getattr_maxsz)
701 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_getattr_maxsz)
705 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
706 encode_sequence_maxsz + \
707 encode_putfh_maxsz + \
708 encode_delegreturn_maxsz + \
709 encode_getattr_maxsz)
710 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
711 decode_sequence_maxsz + \
712 decode_delegreturn_maxsz + \
713 decode_getattr_maxsz)
714 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
715 encode_sequence_maxsz + \
716 encode_putfh_maxsz + \
717 encode_getacl_maxsz)
718 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
719 decode_sequence_maxsz + \
720 decode_putfh_maxsz + \
721 decode_getacl_maxsz)
722 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
723 encode_sequence_maxsz + \
724 encode_putfh_maxsz + \
725 encode_setacl_maxsz)
726 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
727 decode_sequence_maxsz + \
728 decode_putfh_maxsz + \
729 decode_setacl_maxsz)
730 #define NFS4_enc_fs_locations_sz \
731 (compound_encode_hdr_maxsz + \
732 encode_sequence_maxsz + \
733 encode_putfh_maxsz + \
734 encode_lookup_maxsz + \
735 encode_fs_locations_maxsz)
736 #define NFS4_dec_fs_locations_sz \
737 (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_lookup_maxsz + \
741 decode_fs_locations_maxsz)
742 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
743 encode_sequence_maxsz + \
744 encode_putfh_maxsz + \
745 encode_secinfo_maxsz)
746 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
747 decode_sequence_maxsz + \
748 decode_putfh_maxsz + \
749 decode_secinfo_maxsz)
750 #if defined(CONFIG_NFS_V4_1)
751 #define NFS4_enc_bind_conn_to_session_sz \
752 (compound_encode_hdr_maxsz + \
753 encode_bind_conn_to_session_maxsz)
754 #define NFS4_dec_bind_conn_to_session_sz \
755 (compound_decode_hdr_maxsz + \
756 decode_bind_conn_to_session_maxsz)
757 #define NFS4_enc_exchange_id_sz \
758 (compound_encode_hdr_maxsz + \
759 encode_exchange_id_maxsz)
760 #define NFS4_dec_exchange_id_sz \
761 (compound_decode_hdr_maxsz + \
762 decode_exchange_id_maxsz)
763 #define NFS4_enc_create_session_sz \
764 (compound_encode_hdr_maxsz + \
765 encode_create_session_maxsz)
766 #define NFS4_dec_create_session_sz \
767 (compound_decode_hdr_maxsz + \
768 decode_create_session_maxsz)
769 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
770 encode_destroy_session_maxsz)
771 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
772 decode_destroy_session_maxsz)
773 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
774 encode_destroy_clientid_maxsz)
775 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
776 decode_destroy_clientid_maxsz)
777 #define NFS4_enc_sequence_sz \
778 (compound_decode_hdr_maxsz + \
779 encode_sequence_maxsz)
780 #define NFS4_dec_sequence_sz \
781 (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz)
783 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
784 encode_sequence_maxsz + \
785 encode_putrootfh_maxsz + \
786 encode_fsinfo_maxsz)
787 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
788 decode_sequence_maxsz + \
789 decode_putrootfh_maxsz + \
790 decode_fsinfo_maxsz)
791 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
792 encode_sequence_maxsz + \
793 encode_reclaim_complete_maxsz)
794 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
795 decode_sequence_maxsz + \
796 decode_reclaim_complete_maxsz)
797 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
798 encode_sequence_maxsz + \
799 encode_putfh_maxsz + \
800 encode_getdevicelist_maxsz)
801 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
802 decode_sequence_maxsz + \
803 decode_putfh_maxsz + \
804 decode_getdevicelist_maxsz)
805 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
806 encode_sequence_maxsz +\
807 encode_getdeviceinfo_maxsz)
808 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
809 decode_sequence_maxsz + \
810 decode_getdeviceinfo_maxsz)
811 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
812 encode_sequence_maxsz + \
813 encode_putfh_maxsz + \
814 encode_layoutget_maxsz)
815 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
816 decode_sequence_maxsz + \
817 decode_putfh_maxsz + \
818 decode_layoutget_maxsz)
819 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
820 encode_sequence_maxsz +\
821 encode_putfh_maxsz + \
822 encode_layoutcommit_maxsz + \
823 encode_getattr_maxsz)
824 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putfh_maxsz + \
827 decode_layoutcommit_maxsz + \
828 decode_getattr_maxsz)
829 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
830 encode_sequence_maxsz + \
831 encode_putfh_maxsz + \
832 encode_layoutreturn_maxsz)
833 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
834 decode_sequence_maxsz + \
835 decode_putfh_maxsz + \
836 decode_layoutreturn_maxsz)
837 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
838 encode_sequence_maxsz + \
839 encode_putrootfh_maxsz +\
840 encode_secinfo_no_name_maxsz)
841 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
842 decode_sequence_maxsz + \
843 decode_putrootfh_maxsz + \
844 decode_secinfo_no_name_maxsz)
845 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
846 encode_sequence_maxsz + \
847 encode_test_stateid_maxsz)
848 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
849 decode_sequence_maxsz + \
850 decode_test_stateid_maxsz)
851 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
852 encode_sequence_maxsz + \
853 encode_free_stateid_maxsz)
854 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
855 decode_sequence_maxsz + \
856 decode_free_stateid_maxsz)
857
858 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
859 compound_encode_hdr_maxsz +
860 encode_sequence_maxsz +
861 encode_putfh_maxsz +
862 encode_getattr_maxsz) *
863 XDR_UNIT);
864
865 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
866 compound_decode_hdr_maxsz +
867 decode_sequence_maxsz +
868 decode_putfh_maxsz) *
869 XDR_UNIT);
870 #endif /* CONFIG_NFS_V4_1 */
871
872 static const umode_t nfs_type2fmt[] = {
873 [NF4BAD] = 0,
874 [NF4REG] = S_IFREG,
875 [NF4DIR] = S_IFDIR,
876 [NF4BLK] = S_IFBLK,
877 [NF4CHR] = S_IFCHR,
878 [NF4LNK] = S_IFLNK,
879 [NF4SOCK] = S_IFSOCK,
880 [NF4FIFO] = S_IFIFO,
881 [NF4ATTRDIR] = 0,
882 [NF4NAMEDATTR] = 0,
883 };
884
885 struct compound_hdr {
886 int32_t status;
887 uint32_t nops;
888 __be32 * nops_p;
889 uint32_t taglen;
890 char * tag;
891 uint32_t replen; /* expected reply words */
892 u32 minorversion;
893 };
894
895 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
896 {
897 __be32 *p = xdr_reserve_space(xdr, nbytes);
898 BUG_ON(!p);
899 return p;
900 }
901
902 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
903 {
904 __be32 *p;
905
906 p = xdr_reserve_space(xdr, len);
907 xdr_encode_opaque_fixed(p, buf, len);
908 }
909
910 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
911 {
912 __be32 *p;
913
914 p = reserve_space(xdr, 4 + len);
915 xdr_encode_opaque(p, str, len);
916 }
917
918 static void encode_uint32(struct xdr_stream *xdr, u32 n)
919 {
920 __be32 *p;
921
922 p = reserve_space(xdr, 4);
923 *p = cpu_to_be32(n);
924 }
925
926 static void encode_uint64(struct xdr_stream *xdr, u64 n)
927 {
928 __be32 *p;
929
930 p = reserve_space(xdr, 8);
931 xdr_encode_hyper(p, n);
932 }
933
934 static void encode_nfs4_seqid(struct xdr_stream *xdr,
935 const struct nfs_seqid *seqid)
936 {
937 encode_uint32(xdr, seqid->sequence->counter);
938 }
939
940 static void encode_compound_hdr(struct xdr_stream *xdr,
941 struct rpc_rqst *req,
942 struct compound_hdr *hdr)
943 {
944 __be32 *p;
945 struct rpc_auth *auth = req->rq_cred->cr_auth;
946
947 /* initialize running count of expected bytes in reply.
948 * NOTE: the replied tag SHOULD be the same is the one sent,
949 * but this is not required as a MUST for the server to do so. */
950 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
951
952 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
953 encode_string(xdr, hdr->taglen, hdr->tag);
954 p = reserve_space(xdr, 8);
955 *p++ = cpu_to_be32(hdr->minorversion);
956 hdr->nops_p = p;
957 *p = cpu_to_be32(hdr->nops);
958 }
959
960 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
961 uint32_t replen,
962 struct compound_hdr *hdr)
963 {
964 encode_uint32(xdr, op);
965 hdr->nops++;
966 hdr->replen += replen;
967 }
968
969 static void encode_nops(struct compound_hdr *hdr)
970 {
971 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
972 *hdr->nops_p = htonl(hdr->nops);
973 }
974
975 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
976 {
977 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
978 }
979
980 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
981 {
982 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
983 }
984
985 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
986 const struct nfs4_label *label,
987 const struct nfs_server *server)
988 {
989 char owner_name[IDMAP_NAMESZ];
990 char owner_group[IDMAP_NAMESZ];
991 int owner_namelen = 0;
992 int owner_grouplen = 0;
993 __be32 *p;
994 __be32 *q;
995 int len;
996 uint32_t bmval0 = 0;
997 uint32_t bmval1 = 0;
998 uint32_t bmval2 = 0;
999
1000 /*
1001 * We reserve enough space to write the entire attribute buffer at once.
1002 * In the worst-case, this would be
1003 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
1004 * = 40 bytes, plus any contribution from variable-length fields
1005 * such as owner/group.
1006 */
1007 len = 20;
1008
1009 /* Sigh */
1010 if (iap->ia_valid & ATTR_SIZE)
1011 len += 8;
1012 if (iap->ia_valid & ATTR_MODE)
1013 len += 4;
1014 if (iap->ia_valid & ATTR_UID) {
1015 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1016 if (owner_namelen < 0) {
1017 dprintk("nfs: couldn't resolve uid %d to string\n",
1018 from_kuid(&init_user_ns, iap->ia_uid));
1019 /* XXX */
1020 strcpy(owner_name, "nobody");
1021 owner_namelen = sizeof("nobody") - 1;
1022 /* goto out; */
1023 }
1024 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1025 }
1026 if (iap->ia_valid & ATTR_GID) {
1027 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1028 if (owner_grouplen < 0) {
1029 dprintk("nfs: couldn't resolve gid %d to string\n",
1030 from_kgid(&init_user_ns, iap->ia_gid));
1031 strcpy(owner_group, "nobody");
1032 owner_grouplen = sizeof("nobody") - 1;
1033 /* goto out; */
1034 }
1035 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1036 }
1037 if (label)
1038 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1039 if (iap->ia_valid & ATTR_ATIME_SET)
1040 len += 16;
1041 else if (iap->ia_valid & ATTR_ATIME)
1042 len += 4;
1043 if (iap->ia_valid & ATTR_MTIME_SET)
1044 len += 16;
1045 else if (iap->ia_valid & ATTR_MTIME)
1046 len += 4;
1047 p = reserve_space(xdr, len);
1048
1049 /*
1050 * We write the bitmap length now, but leave the bitmap and the attribute
1051 * buffer length to be backfilled at the end of this routine.
1052 */
1053 *p++ = cpu_to_be32(3);
1054 q = p;
1055 p += 4;
1056
1057 if (iap->ia_valid & ATTR_SIZE) {
1058 bmval0 |= FATTR4_WORD0_SIZE;
1059 p = xdr_encode_hyper(p, iap->ia_size);
1060 }
1061 if (iap->ia_valid & ATTR_MODE) {
1062 bmval1 |= FATTR4_WORD1_MODE;
1063 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1064 }
1065 if (iap->ia_valid & ATTR_UID) {
1066 bmval1 |= FATTR4_WORD1_OWNER;
1067 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1068 }
1069 if (iap->ia_valid & ATTR_GID) {
1070 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1071 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1072 }
1073 if (iap->ia_valid & ATTR_ATIME_SET) {
1074 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1075 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1076 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1077 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1078 }
1079 else if (iap->ia_valid & ATTR_ATIME) {
1080 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1081 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1082 }
1083 if (iap->ia_valid & ATTR_MTIME_SET) {
1084 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1085 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1086 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1087 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1088 }
1089 else if (iap->ia_valid & ATTR_MTIME) {
1090 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1091 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1092 }
1093 if (label) {
1094 bmval2 |= FATTR4_WORD2_SECURITY_LABEL;
1095 *p++ = cpu_to_be32(label->lfs);
1096 *p++ = cpu_to_be32(label->pi);
1097 *p++ = cpu_to_be32(label->len);
1098 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1099 }
1100
1101 /*
1102 * Now we backfill the bitmap and the attribute buffer length.
1103 */
1104 if (len != ((char *)p - (char *)q) + 4) {
1105 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1106 len, ((char *)p - (char *)q) + 4);
1107 BUG();
1108 }
1109 len = (char *)p - (char *)q - 16;
1110 *q++ = htonl(bmval0);
1111 *q++ = htonl(bmval1);
1112 *q++ = htonl(bmval2);
1113 *q = htonl(len);
1114
1115 /* out: */
1116 }
1117
1118 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1119 {
1120 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1121 encode_uint32(xdr, access);
1122 }
1123
1124 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1125 {
1126 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1127 encode_nfs4_seqid(xdr, arg->seqid);
1128 encode_nfs4_stateid(xdr, arg->stateid);
1129 }
1130
1131 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1132 {
1133 __be32 *p;
1134
1135 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1136 p = reserve_space(xdr, 12);
1137 p = xdr_encode_hyper(p, args->offset);
1138 *p = cpu_to_be32(args->count);
1139 }
1140
1141 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1142 {
1143 __be32 *p;
1144
1145 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1146 encode_uint32(xdr, create->ftype);
1147
1148 switch (create->ftype) {
1149 case NF4LNK:
1150 p = reserve_space(xdr, 4);
1151 *p = cpu_to_be32(create->u.symlink.len);
1152 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1153 break;
1154
1155 case NF4BLK: case NF4CHR:
1156 p = reserve_space(xdr, 8);
1157 *p++ = cpu_to_be32(create->u.device.specdata1);
1158 *p = cpu_to_be32(create->u.device.specdata2);
1159 break;
1160
1161 default:
1162 break;
1163 }
1164
1165 encode_string(xdr, create->name->len, create->name->name);
1166 encode_attrs(xdr, create->attrs, create->label, create->server);
1167 }
1168
1169 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1170 {
1171 __be32 *p;
1172
1173 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1174 p = reserve_space(xdr, 8);
1175 *p++ = cpu_to_be32(1);
1176 *p = cpu_to_be32(bitmap);
1177 }
1178
1179 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1180 {
1181 __be32 *p;
1182
1183 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1184 p = reserve_space(xdr, 12);
1185 *p++ = cpu_to_be32(2);
1186 *p++ = cpu_to_be32(bm0);
1187 *p = cpu_to_be32(bm1);
1188 }
1189
1190 static void
1191 encode_getattr_three(struct xdr_stream *xdr,
1192 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1193 struct compound_hdr *hdr)
1194 {
1195 __be32 *p;
1196
1197 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1198 if (bm2) {
1199 p = reserve_space(xdr, 16);
1200 *p++ = cpu_to_be32(3);
1201 *p++ = cpu_to_be32(bm0);
1202 *p++ = cpu_to_be32(bm1);
1203 *p = cpu_to_be32(bm2);
1204 } else if (bm1) {
1205 p = reserve_space(xdr, 12);
1206 *p++ = cpu_to_be32(2);
1207 *p++ = cpu_to_be32(bm0);
1208 *p = cpu_to_be32(bm1);
1209 } else {
1210 p = reserve_space(xdr, 8);
1211 *p++ = cpu_to_be32(1);
1212 *p = cpu_to_be32(bm0);
1213 }
1214 }
1215
1216 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1217 {
1218 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1219 bitmask[1] & nfs4_fattr_bitmap[1],
1220 bitmask[2] & nfs4_fattr_bitmap[2],
1221 hdr);
1222 }
1223
1224 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1225 const u32 *open_bitmap,
1226 struct compound_hdr *hdr)
1227 {
1228 encode_getattr_three(xdr,
1229 bitmask[0] & open_bitmap[0],
1230 bitmask[1] & open_bitmap[1],
1231 bitmask[2] & open_bitmap[2],
1232 hdr);
1233 }
1234
1235 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1236 {
1237 encode_getattr_three(xdr,
1238 bitmask[0] & nfs4_fsinfo_bitmap[0],
1239 bitmask[1] & nfs4_fsinfo_bitmap[1],
1240 bitmask[2] & nfs4_fsinfo_bitmap[2],
1241 hdr);
1242 }
1243
1244 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1245 {
1246 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1247 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1248 }
1249
1250 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1251 {
1252 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1253 }
1254
1255 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1256 {
1257 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1258 encode_string(xdr, name->len, name->name);
1259 }
1260
1261 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1262 {
1263 if (fl->fl_type == F_RDLCK)
1264 return block ? NFS4_READW_LT : NFS4_READ_LT;
1265 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1266 }
1267
1268 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1269 {
1270 if (fl->fl_end == OFFSET_MAX)
1271 return ~(uint64_t)0;
1272 return fl->fl_end - fl->fl_start + 1;
1273 }
1274
1275 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1276 {
1277 __be32 *p;
1278
1279 p = reserve_space(xdr, 32);
1280 p = xdr_encode_hyper(p, lowner->clientid);
1281 *p++ = cpu_to_be32(20);
1282 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1283 *p++ = cpu_to_be32(lowner->s_dev);
1284 xdr_encode_hyper(p, lowner->id);
1285 }
1286
1287 /*
1288 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1289 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1290 */
1291 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1292 {
1293 __be32 *p;
1294
1295 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1296 p = reserve_space(xdr, 28);
1297 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1298 *p++ = cpu_to_be32(args->reclaim);
1299 p = xdr_encode_hyper(p, args->fl->fl_start);
1300 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1301 *p = cpu_to_be32(args->new_lock_owner);
1302 if (args->new_lock_owner){
1303 encode_nfs4_seqid(xdr, args->open_seqid);
1304 encode_nfs4_stateid(xdr, args->open_stateid);
1305 encode_nfs4_seqid(xdr, args->lock_seqid);
1306 encode_lockowner(xdr, &args->lock_owner);
1307 }
1308 else {
1309 encode_nfs4_stateid(xdr, args->lock_stateid);
1310 encode_nfs4_seqid(xdr, args->lock_seqid);
1311 }
1312 }
1313
1314 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1315 {
1316 __be32 *p;
1317
1318 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1319 p = reserve_space(xdr, 20);
1320 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1321 p = xdr_encode_hyper(p, args->fl->fl_start);
1322 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1323 encode_lockowner(xdr, &args->lock_owner);
1324 }
1325
1326 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1327 {
1328 __be32 *p;
1329
1330 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1331 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1332 encode_nfs4_seqid(xdr, args->seqid);
1333 encode_nfs4_stateid(xdr, args->stateid);
1334 p = reserve_space(xdr, 16);
1335 p = xdr_encode_hyper(p, args->fl->fl_start);
1336 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1337 }
1338
1339 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1340 {
1341 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1342 encode_lockowner(xdr, lowner);
1343 }
1344
1345 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1346 {
1347 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1348 encode_string(xdr, name->len, name->name);
1349 }
1350
1351 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1352 {
1353 __be32 *p;
1354
1355 p = reserve_space(xdr, 8);
1356 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1357 case FMODE_READ:
1358 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1359 break;
1360 case FMODE_WRITE:
1361 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1362 break;
1363 case FMODE_READ|FMODE_WRITE:
1364 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1365 break;
1366 default:
1367 *p++ = cpu_to_be32(0);
1368 }
1369 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1370 }
1371
1372 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1373 {
1374 __be32 *p;
1375 /*
1376 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1377 * owner 4 = 32
1378 */
1379 encode_nfs4_seqid(xdr, arg->seqid);
1380 encode_share_access(xdr, arg->fmode);
1381 p = reserve_space(xdr, 36);
1382 p = xdr_encode_hyper(p, arg->clientid);
1383 *p++ = cpu_to_be32(24);
1384 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1385 *p++ = cpu_to_be32(arg->server->s_dev);
1386 *p++ = cpu_to_be32(arg->id.uniquifier);
1387 xdr_encode_hyper(p, arg->id.create_time);
1388 }
1389
1390 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1391 {
1392 struct iattr dummy;
1393 __be32 *p;
1394
1395 p = reserve_space(xdr, 4);
1396 switch(arg->createmode) {
1397 case NFS4_CREATE_UNCHECKED:
1398 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1399 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1400 break;
1401 case NFS4_CREATE_GUARDED:
1402 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1403 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1404 break;
1405 case NFS4_CREATE_EXCLUSIVE:
1406 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1407 encode_nfs4_verifier(xdr, &arg->u.verifier);
1408 break;
1409 case NFS4_CREATE_EXCLUSIVE4_1:
1410 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1411 encode_nfs4_verifier(xdr, &arg->u.verifier);
1412 dummy.ia_valid = 0;
1413 encode_attrs(xdr, &dummy, arg->label, arg->server);
1414 }
1415 }
1416
1417 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1418 {
1419 __be32 *p;
1420
1421 p = reserve_space(xdr, 4);
1422 switch (arg->open_flags & O_CREAT) {
1423 case 0:
1424 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1425 break;
1426 default:
1427 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1428 encode_createmode(xdr, arg);
1429 }
1430 }
1431
1432 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1433 {
1434 __be32 *p;
1435
1436 p = reserve_space(xdr, 4);
1437 switch (delegation_type) {
1438 case 0:
1439 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1440 break;
1441 case FMODE_READ:
1442 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1443 break;
1444 case FMODE_WRITE|FMODE_READ:
1445 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1446 break;
1447 default:
1448 BUG();
1449 }
1450 }
1451
1452 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1453 {
1454 __be32 *p;
1455
1456 p = reserve_space(xdr, 4);
1457 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1458 encode_string(xdr, name->len, name->name);
1459 }
1460
1461 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1462 {
1463 __be32 *p;
1464
1465 p = reserve_space(xdr, 4);
1466 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1467 encode_delegation_type(xdr, type);
1468 }
1469
1470 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1471 {
1472 __be32 *p;
1473
1474 p = reserve_space(xdr, 4);
1475 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1476 encode_nfs4_stateid(xdr, stateid);
1477 encode_string(xdr, name->len, name->name);
1478 }
1479
1480 static inline void encode_claim_fh(struct xdr_stream *xdr)
1481 {
1482 __be32 *p;
1483
1484 p = reserve_space(xdr, 4);
1485 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1486 }
1487
1488 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1489 {
1490 __be32 *p;
1491
1492 p = reserve_space(xdr, 4);
1493 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1494 encode_nfs4_stateid(xdr, stateid);
1495 }
1496
1497 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1498 {
1499 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1500 encode_openhdr(xdr, arg);
1501 encode_opentype(xdr, arg);
1502 switch (arg->claim) {
1503 case NFS4_OPEN_CLAIM_NULL:
1504 encode_claim_null(xdr, arg->name);
1505 break;
1506 case NFS4_OPEN_CLAIM_PREVIOUS:
1507 encode_claim_previous(xdr, arg->u.delegation_type);
1508 break;
1509 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1510 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1511 break;
1512 case NFS4_OPEN_CLAIM_FH:
1513 encode_claim_fh(xdr);
1514 break;
1515 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1516 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1517 break;
1518 default:
1519 BUG();
1520 }
1521 }
1522
1523 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1524 {
1525 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1526 encode_nfs4_stateid(xdr, arg->stateid);
1527 encode_nfs4_seqid(xdr, arg->seqid);
1528 }
1529
1530 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1531 {
1532 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1533 encode_nfs4_stateid(xdr, arg->stateid);
1534 encode_nfs4_seqid(xdr, arg->seqid);
1535 encode_share_access(xdr, arg->fmode);
1536 }
1537
1538 static void
1539 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1540 {
1541 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1542 encode_string(xdr, fh->size, fh->data);
1543 }
1544
1545 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1546 {
1547 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1548 }
1549
1550 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1551 {
1552 __be32 *p;
1553
1554 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1555 encode_nfs4_stateid(xdr, &args->stateid);
1556
1557 p = reserve_space(xdr, 12);
1558 p = xdr_encode_hyper(p, args->offset);
1559 *p = cpu_to_be32(args->count);
1560 }
1561
1562 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1563 {
1564 uint32_t attrs[3] = {
1565 FATTR4_WORD0_RDATTR_ERROR,
1566 FATTR4_WORD1_MOUNTED_ON_FILEID,
1567 };
1568 uint32_t dircount = readdir->count >> 1;
1569 __be32 *p, verf[2];
1570
1571 if (readdir->plus) {
1572 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1573 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1574 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1575 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1576 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1577 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1578 dircount >>= 1;
1579 }
1580 /* Use mounted_on_fileid only if the server supports it */
1581 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1582 attrs[0] |= FATTR4_WORD0_FILEID;
1583
1584 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1585 encode_uint64(xdr, readdir->cookie);
1586 encode_nfs4_verifier(xdr, &readdir->verifier);
1587 p = reserve_space(xdr, encode_readdir_space);
1588 *p++ = cpu_to_be32(dircount);
1589 *p++ = cpu_to_be32(readdir->count);
1590 *p++ = cpu_to_be32(encode_readdir_bitmask_sz);
1591 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1592 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1593 if (encode_readdir_bitmask_sz > 2) {
1594 if (hdr->minorversion > 1)
1595 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1596 p++, *p++ = cpu_to_be32(attrs[2] & readdir->bitmask[2]);
1597 }
1598 memcpy(verf, readdir->verifier.data, sizeof(verf));
1599
1600 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1601 __func__,
1602 (unsigned long long)readdir->cookie,
1603 verf[0], verf[1],
1604 attrs[0] & readdir->bitmask[0],
1605 attrs[1] & readdir->bitmask[1],
1606 attrs[2] & readdir->bitmask[2]);
1607 }
1608
1609 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1610 {
1611 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1612 }
1613
1614 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1615 {
1616 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1617 encode_string(xdr, name->len, name->name);
1618 }
1619
1620 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1621 {
1622 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1623 encode_string(xdr, oldname->len, oldname->name);
1624 encode_string(xdr, newname->len, newname->name);
1625 }
1626
1627 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1628 struct compound_hdr *hdr)
1629 {
1630 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1631 encode_uint64(xdr, clid);
1632 }
1633
1634 static void
1635 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1636 {
1637 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1638 }
1639
1640 static void
1641 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1642 {
1643 __be32 *p;
1644
1645 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1646 encode_nfs4_stateid(xdr, &zero_stateid);
1647 p = reserve_space(xdr, 2*4);
1648 *p++ = cpu_to_be32(1);
1649 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1650 p = reserve_space(xdr, 4);
1651 *p = cpu_to_be32(arg->acl_len);
1652 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1653 }
1654
1655 static void
1656 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1657 {
1658 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1659 }
1660
1661 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1662 {
1663 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1664 encode_nfs4_stateid(xdr, &arg->stateid);
1665 encode_attrs(xdr, arg->iap, arg->label, server);
1666 }
1667
1668 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1669 {
1670 __be32 *p;
1671
1672 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1673 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1674
1675 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1676 p = reserve_space(xdr, 4);
1677 *p = cpu_to_be32(setclientid->sc_prog);
1678 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1679 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1680 p = reserve_space(xdr, 4);
1681 *p = cpu_to_be32(setclientid->sc_cb_ident);
1682 }
1683
1684 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1685 {
1686 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1687 decode_setclientid_confirm_maxsz, hdr);
1688 encode_uint64(xdr, arg->clientid);
1689 encode_nfs4_verifier(xdr, &arg->confirm);
1690 }
1691
1692 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1693 {
1694 __be32 *p;
1695
1696 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1697 encode_nfs4_stateid(xdr, &args->stateid);
1698
1699 p = reserve_space(xdr, 16);
1700 p = xdr_encode_hyper(p, args->offset);
1701 *p++ = cpu_to_be32(args->stable);
1702 *p = cpu_to_be32(args->count);
1703
1704 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1705 }
1706
1707 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1708 {
1709 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1710 encode_nfs4_stateid(xdr, stateid);
1711 }
1712
1713 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1714 {
1715 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1716 encode_string(xdr, name->len, name->name);
1717 }
1718
1719 #if defined(CONFIG_NFS_V4_1)
1720 /* NFSv4.1 operations */
1721 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1722 struct nfs4_session *session,
1723 struct compound_hdr *hdr)
1724 {
1725 __be32 *p;
1726
1727 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1728 decode_bind_conn_to_session_maxsz, hdr);
1729 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1730 p = xdr_reserve_space(xdr, 8);
1731 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1732 *p = 0; /* use_conn_in_rdma_mode = False */
1733 }
1734
1735 static void encode_exchange_id(struct xdr_stream *xdr,
1736 struct nfs41_exchange_id_args *args,
1737 struct compound_hdr *hdr)
1738 {
1739 __be32 *p;
1740 char impl_name[IMPL_NAME_LIMIT];
1741 int len = 0;
1742
1743 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1744 encode_nfs4_verifier(xdr, args->verifier);
1745
1746 encode_string(xdr, args->id_len, args->id);
1747
1748 p = reserve_space(xdr, 12);
1749 *p++ = cpu_to_be32(args->flags);
1750 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1751
1752 if (send_implementation_id &&
1753 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1754 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1755 <= sizeof(impl_name) + 1)
1756 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1757 utsname()->sysname, utsname()->release,
1758 utsname()->version, utsname()->machine);
1759
1760 if (len > 0) {
1761 *p = cpu_to_be32(1); /* implementation id array length=1 */
1762
1763 encode_string(xdr,
1764 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1765 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1766 encode_string(xdr, len, impl_name);
1767 /* just send zeros for nii_date - the date is in nii_name */
1768 p = reserve_space(xdr, 12);
1769 p = xdr_encode_hyper(p, 0);
1770 *p = cpu_to_be32(0);
1771 } else
1772 *p = cpu_to_be32(0); /* implementation id array length=0 */
1773 }
1774
1775 static void encode_create_session(struct xdr_stream *xdr,
1776 struct nfs41_create_session_args *args,
1777 struct compound_hdr *hdr)
1778 {
1779 __be32 *p;
1780 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1781 uint32_t len;
1782 struct nfs_client *clp = args->client;
1783 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1784 u32 max_resp_sz_cached;
1785
1786 /*
1787 * Assumes OPEN is the biggest non-idempotent compound.
1788 * 2 is the verifier.
1789 */
1790 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1791 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1792
1793 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1794 clp->cl_ipaddr);
1795
1796 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1797 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1798 p = xdr_encode_hyper(p, clp->cl_clientid);
1799 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1800 *p++ = cpu_to_be32(args->flags); /*flags */
1801
1802 /* Fore Channel */
1803 *p++ = cpu_to_be32(0); /* header padding size */
1804 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1805 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1806 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1807 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1808 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1809 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1810
1811 /* Back Channel */
1812 *p++ = cpu_to_be32(0); /* header padding size */
1813 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1814 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1815 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1816 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1817 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1818 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1819
1820 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1821 *p++ = cpu_to_be32(1);
1822 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1823
1824 /* authsys_parms rfc1831 */
1825 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1826 p = xdr_encode_opaque(p, machine_name, len);
1827 *p++ = cpu_to_be32(0); /* UID */
1828 *p++ = cpu_to_be32(0); /* GID */
1829 *p = cpu_to_be32(0); /* No more gids */
1830 }
1831
1832 static void encode_destroy_session(struct xdr_stream *xdr,
1833 struct nfs4_session *session,
1834 struct compound_hdr *hdr)
1835 {
1836 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1837 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1838 }
1839
1840 static void encode_destroy_clientid(struct xdr_stream *xdr,
1841 uint64_t clientid,
1842 struct compound_hdr *hdr)
1843 {
1844 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1845 encode_uint64(xdr, clientid);
1846 }
1847
1848 static void encode_reclaim_complete(struct xdr_stream *xdr,
1849 struct nfs41_reclaim_complete_args *args,
1850 struct compound_hdr *hdr)
1851 {
1852 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1853 encode_uint32(xdr, args->one_fs);
1854 }
1855 #endif /* CONFIG_NFS_V4_1 */
1856
1857 static void encode_sequence(struct xdr_stream *xdr,
1858 const struct nfs4_sequence_args *args,
1859 struct compound_hdr *hdr)
1860 {
1861 #if defined(CONFIG_NFS_V4_1)
1862 struct nfs4_session *session;
1863 struct nfs4_slot_table *tp;
1864 struct nfs4_slot *slot = args->sa_slot;
1865 __be32 *p;
1866
1867 if (slot == NULL)
1868 return;
1869
1870 tp = slot->table;
1871 session = tp->session;
1872
1873 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1874
1875 /*
1876 * Sessionid + seqid + slotid + max slotid + cache_this
1877 */
1878 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1879 "max_slotid=%d cache_this=%d\n",
1880 __func__,
1881 ((u32 *)session->sess_id.data)[0],
1882 ((u32 *)session->sess_id.data)[1],
1883 ((u32 *)session->sess_id.data)[2],
1884 ((u32 *)session->sess_id.data)[3],
1885 slot->seq_nr, slot->slot_nr,
1886 tp->highest_used_slotid, args->sa_cache_this);
1887 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1888 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1889 *p++ = cpu_to_be32(slot->seq_nr);
1890 *p++ = cpu_to_be32(slot->slot_nr);
1891 *p++ = cpu_to_be32(tp->highest_used_slotid);
1892 *p = cpu_to_be32(args->sa_cache_this);
1893 #endif /* CONFIG_NFS_V4_1 */
1894 }
1895
1896 #ifdef CONFIG_NFS_V4_1
1897 static void
1898 encode_getdevicelist(struct xdr_stream *xdr,
1899 const struct nfs4_getdevicelist_args *args,
1900 struct compound_hdr *hdr)
1901 {
1902 __be32 *p;
1903 nfs4_verifier dummy = {
1904 .data = "dummmmmy",
1905 };
1906
1907 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1908 p = reserve_space(xdr, 16);
1909 *p++ = cpu_to_be32(args->layoutclass);
1910 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1911 xdr_encode_hyper(p, 0ULL); /* cookie */
1912 encode_nfs4_verifier(xdr, &dummy);
1913 }
1914
1915 static void
1916 encode_getdeviceinfo(struct xdr_stream *xdr,
1917 const struct nfs4_getdeviceinfo_args *args,
1918 struct compound_hdr *hdr)
1919 {
1920 __be32 *p;
1921
1922 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1923 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1924 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1925 NFS4_DEVICEID4_SIZE);
1926 *p++ = cpu_to_be32(args->pdev->layout_type);
1927 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1928 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1929 }
1930
1931 static void
1932 encode_layoutget(struct xdr_stream *xdr,
1933 const struct nfs4_layoutget_args *args,
1934 struct compound_hdr *hdr)
1935 {
1936 __be32 *p;
1937
1938 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1939 p = reserve_space(xdr, 36);
1940 *p++ = cpu_to_be32(0); /* Signal layout available */
1941 *p++ = cpu_to_be32(args->type);
1942 *p++ = cpu_to_be32(args->range.iomode);
1943 p = xdr_encode_hyper(p, args->range.offset);
1944 p = xdr_encode_hyper(p, args->range.length);
1945 p = xdr_encode_hyper(p, args->minlength);
1946 encode_nfs4_stateid(xdr, &args->stateid);
1947 encode_uint32(xdr, args->maxcount);
1948
1949 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1950 __func__,
1951 args->type,
1952 args->range.iomode,
1953 (unsigned long)args->range.offset,
1954 (unsigned long)args->range.length,
1955 args->maxcount);
1956 }
1957
1958 static int
1959 encode_layoutcommit(struct xdr_stream *xdr,
1960 struct inode *inode,
1961 const struct nfs4_layoutcommit_args *args,
1962 struct compound_hdr *hdr)
1963 {
1964 __be32 *p;
1965
1966 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1967 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1968
1969 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1970 p = reserve_space(xdr, 20);
1971 /* Only whole file layouts */
1972 p = xdr_encode_hyper(p, 0); /* offset */
1973 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1974 *p = cpu_to_be32(0); /* reclaim */
1975 encode_nfs4_stateid(xdr, &args->stateid);
1976 p = reserve_space(xdr, 20);
1977 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1978 p = xdr_encode_hyper(p, args->lastbytewritten);
1979 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1980 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1981
1982 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1983 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1984 NFS_I(inode)->layout, xdr, args);
1985 else
1986 encode_uint32(xdr, 0); /* no layout-type payload */
1987
1988 return 0;
1989 }
1990
1991 static void
1992 encode_layoutreturn(struct xdr_stream *xdr,
1993 const struct nfs4_layoutreturn_args *args,
1994 struct compound_hdr *hdr)
1995 {
1996 __be32 *p;
1997
1998 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1999 p = reserve_space(xdr, 16);
2000 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2001 *p++ = cpu_to_be32(args->layout_type);
2002 *p++ = cpu_to_be32(IOMODE_ANY);
2003 *p = cpu_to_be32(RETURN_FILE);
2004 p = reserve_space(xdr, 16);
2005 p = xdr_encode_hyper(p, 0);
2006 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
2007 spin_lock(&args->inode->i_lock);
2008 encode_nfs4_stateid(xdr, &args->stateid);
2009 spin_unlock(&args->inode->i_lock);
2010 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2011 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2012 NFS_I(args->inode)->layout, xdr, args);
2013 } else
2014 encode_uint32(xdr, 0);
2015 }
2016
2017 static int
2018 encode_secinfo_no_name(struct xdr_stream *xdr,
2019 const struct nfs41_secinfo_no_name_args *args,
2020 struct compound_hdr *hdr)
2021 {
2022 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2023 encode_uint32(xdr, args->style);
2024 return 0;
2025 }
2026
2027 static void encode_test_stateid(struct xdr_stream *xdr,
2028 struct nfs41_test_stateid_args *args,
2029 struct compound_hdr *hdr)
2030 {
2031 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2032 encode_uint32(xdr, 1);
2033 encode_nfs4_stateid(xdr, args->stateid);
2034 }
2035
2036 static void encode_free_stateid(struct xdr_stream *xdr,
2037 struct nfs41_free_stateid_args *args,
2038 struct compound_hdr *hdr)
2039 {
2040 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2041 encode_nfs4_stateid(xdr, &args->stateid);
2042 }
2043 #endif /* CONFIG_NFS_V4_1 */
2044
2045 /*
2046 * END OF "GENERIC" ENCODE ROUTINES.
2047 */
2048
2049 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2050 {
2051 #if defined(CONFIG_NFS_V4_1)
2052
2053 if (args->sa_slot)
2054 return args->sa_slot->table->session->clp->cl_mvops->minor_version;
2055 #endif /* CONFIG_NFS_V4_1 */
2056 return 0;
2057 }
2058
2059 /*
2060 * Encode an ACCESS request
2061 */
2062 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2063 const struct nfs4_accessargs *args)
2064 {
2065 struct compound_hdr hdr = {
2066 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2067 };
2068
2069 encode_compound_hdr(xdr, req, &hdr);
2070 encode_sequence(xdr, &args->seq_args, &hdr);
2071 encode_putfh(xdr, args->fh, &hdr);
2072 encode_access(xdr, args->access, &hdr);
2073 encode_getfattr(xdr, args->bitmask, &hdr);
2074 encode_nops(&hdr);
2075 }
2076
2077 /*
2078 * Encode LOOKUP request
2079 */
2080 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2081 const struct nfs4_lookup_arg *args)
2082 {
2083 struct compound_hdr hdr = {
2084 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2085 };
2086
2087 encode_compound_hdr(xdr, req, &hdr);
2088 encode_sequence(xdr, &args->seq_args, &hdr);
2089 encode_putfh(xdr, args->dir_fh, &hdr);
2090 encode_lookup(xdr, args->name, &hdr);
2091 encode_getfh(xdr, &hdr);
2092 encode_getfattr(xdr, args->bitmask, &hdr);
2093 encode_nops(&hdr);
2094 }
2095
2096 /*
2097 * Encode LOOKUP_ROOT request
2098 */
2099 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2100 struct xdr_stream *xdr,
2101 const struct nfs4_lookup_root_arg *args)
2102 {
2103 struct compound_hdr hdr = {
2104 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2105 };
2106
2107 encode_compound_hdr(xdr, req, &hdr);
2108 encode_sequence(xdr, &args->seq_args, &hdr);
2109 encode_putrootfh(xdr, &hdr);
2110 encode_getfh(xdr, &hdr);
2111 encode_getfattr(xdr, args->bitmask, &hdr);
2112 encode_nops(&hdr);
2113 }
2114
2115 /*
2116 * Encode REMOVE request
2117 */
2118 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2119 const struct nfs_removeargs *args)
2120 {
2121 struct compound_hdr hdr = {
2122 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2123 };
2124
2125 encode_compound_hdr(xdr, req, &hdr);
2126 encode_sequence(xdr, &args->seq_args, &hdr);
2127 encode_putfh(xdr, args->fh, &hdr);
2128 encode_remove(xdr, &args->name, &hdr);
2129 encode_nops(&hdr);
2130 }
2131
2132 /*
2133 * Encode RENAME request
2134 */
2135 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2136 const struct nfs_renameargs *args)
2137 {
2138 struct compound_hdr hdr = {
2139 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2140 };
2141
2142 encode_compound_hdr(xdr, req, &hdr);
2143 encode_sequence(xdr, &args->seq_args, &hdr);
2144 encode_putfh(xdr, args->old_dir, &hdr);
2145 encode_savefh(xdr, &hdr);
2146 encode_putfh(xdr, args->new_dir, &hdr);
2147 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2148 encode_nops(&hdr);
2149 }
2150
2151 /*
2152 * Encode LINK request
2153 */
2154 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2155 const struct nfs4_link_arg *args)
2156 {
2157 struct compound_hdr hdr = {
2158 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2159 };
2160
2161 encode_compound_hdr(xdr, req, &hdr);
2162 encode_sequence(xdr, &args->seq_args, &hdr);
2163 encode_putfh(xdr, args->fh, &hdr);
2164 encode_savefh(xdr, &hdr);
2165 encode_putfh(xdr, args->dir_fh, &hdr);
2166 encode_link(xdr, args->name, &hdr);
2167 encode_restorefh(xdr, &hdr);
2168 encode_getfattr(xdr, args->bitmask, &hdr);
2169 encode_nops(&hdr);
2170 }
2171
2172 /*
2173 * Encode CREATE request
2174 */
2175 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2176 const struct nfs4_create_arg *args)
2177 {
2178 struct compound_hdr hdr = {
2179 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2180 };
2181
2182 encode_compound_hdr(xdr, req, &hdr);
2183 encode_sequence(xdr, &args->seq_args, &hdr);
2184 encode_putfh(xdr, args->dir_fh, &hdr);
2185 encode_create(xdr, args, &hdr);
2186 encode_getfh(xdr, &hdr);
2187 encode_getfattr(xdr, args->bitmask, &hdr);
2188 encode_nops(&hdr);
2189 }
2190
2191 /*
2192 * Encode SYMLINK request
2193 */
2194 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2195 const struct nfs4_create_arg *args)
2196 {
2197 nfs4_xdr_enc_create(req, xdr, args);
2198 }
2199
2200 /*
2201 * Encode GETATTR request
2202 */
2203 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2204 const struct nfs4_getattr_arg *args)
2205 {
2206 struct compound_hdr hdr = {
2207 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2208 };
2209
2210 encode_compound_hdr(xdr, req, &hdr);
2211 encode_sequence(xdr, &args->seq_args, &hdr);
2212 encode_putfh(xdr, args->fh, &hdr);
2213 encode_getfattr(xdr, args->bitmask, &hdr);
2214 encode_nops(&hdr);
2215 }
2216
2217 /*
2218 * Encode a CLOSE request
2219 */
2220 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2221 struct nfs_closeargs *args)
2222 {
2223 struct compound_hdr hdr = {
2224 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2225 };
2226
2227 encode_compound_hdr(xdr, req, &hdr);
2228 encode_sequence(xdr, &args->seq_args, &hdr);
2229 encode_putfh(xdr, args->fh, &hdr);
2230 encode_close(xdr, args, &hdr);
2231 encode_getfattr(xdr, args->bitmask, &hdr);
2232 encode_nops(&hdr);
2233 }
2234
2235 /*
2236 * Encode an OPEN request
2237 */
2238 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2239 struct nfs_openargs *args)
2240 {
2241 struct compound_hdr hdr = {
2242 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2243 };
2244
2245 encode_compound_hdr(xdr, req, &hdr);
2246 encode_sequence(xdr, &args->seq_args, &hdr);
2247 encode_putfh(xdr, args->fh, &hdr);
2248 encode_open(xdr, args, &hdr);
2249 encode_getfh(xdr, &hdr);
2250 if (args->access)
2251 encode_access(xdr, args->access, &hdr);
2252 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2253 encode_nops(&hdr);
2254 }
2255
2256 /*
2257 * Encode an OPEN_CONFIRM request
2258 */
2259 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2260 struct xdr_stream *xdr,
2261 struct nfs_open_confirmargs *args)
2262 {
2263 struct compound_hdr hdr = {
2264 .nops = 0,
2265 };
2266
2267 encode_compound_hdr(xdr, req, &hdr);
2268 encode_putfh(xdr, args->fh, &hdr);
2269 encode_open_confirm(xdr, args, &hdr);
2270 encode_nops(&hdr);
2271 }
2272
2273 /*
2274 * Encode an OPEN request with no attributes.
2275 */
2276 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2277 struct xdr_stream *xdr,
2278 struct nfs_openargs *args)
2279 {
2280 struct compound_hdr hdr = {
2281 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2282 };
2283
2284 encode_compound_hdr(xdr, req, &hdr);
2285 encode_sequence(xdr, &args->seq_args, &hdr);
2286 encode_putfh(xdr, args->fh, &hdr);
2287 encode_open(xdr, args, &hdr);
2288 if (args->access)
2289 encode_access(xdr, args->access, &hdr);
2290 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2291 encode_nops(&hdr);
2292 }
2293
2294 /*
2295 * Encode an OPEN_DOWNGRADE request
2296 */
2297 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2298 struct xdr_stream *xdr,
2299 struct nfs_closeargs *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_open_downgrade(xdr, args, &hdr);
2309 encode_getfattr(xdr, args->bitmask, &hdr);
2310 encode_nops(&hdr);
2311 }
2312
2313 /*
2314 * Encode a LOCK request
2315 */
2316 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2317 struct nfs_lock_args *args)
2318 {
2319 struct compound_hdr hdr = {
2320 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2321 };
2322
2323 encode_compound_hdr(xdr, req, &hdr);
2324 encode_sequence(xdr, &args->seq_args, &hdr);
2325 encode_putfh(xdr, args->fh, &hdr);
2326 encode_lock(xdr, args, &hdr);
2327 encode_nops(&hdr);
2328 }
2329
2330 /*
2331 * Encode a LOCKT request
2332 */
2333 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2334 struct nfs_lockt_args *args)
2335 {
2336 struct compound_hdr hdr = {
2337 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2338 };
2339
2340 encode_compound_hdr(xdr, req, &hdr);
2341 encode_sequence(xdr, &args->seq_args, &hdr);
2342 encode_putfh(xdr, args->fh, &hdr);
2343 encode_lockt(xdr, args, &hdr);
2344 encode_nops(&hdr);
2345 }
2346
2347 /*
2348 * Encode a LOCKU request
2349 */
2350 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2351 struct nfs_locku_args *args)
2352 {
2353 struct compound_hdr hdr = {
2354 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2355 };
2356
2357 encode_compound_hdr(xdr, req, &hdr);
2358 encode_sequence(xdr, &args->seq_args, &hdr);
2359 encode_putfh(xdr, args->fh, &hdr);
2360 encode_locku(xdr, args, &hdr);
2361 encode_nops(&hdr);
2362 }
2363
2364 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2365 struct xdr_stream *xdr,
2366 struct nfs_release_lockowner_args *args)
2367 {
2368 struct compound_hdr hdr = {
2369 .minorversion = 0,
2370 };
2371
2372 encode_compound_hdr(xdr, req, &hdr);
2373 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2374 encode_nops(&hdr);
2375 }
2376
2377 /*
2378 * Encode a READLINK request
2379 */
2380 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2381 const struct nfs4_readlink *args)
2382 {
2383 struct compound_hdr hdr = {
2384 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2385 };
2386
2387 encode_compound_hdr(xdr, req, &hdr);
2388 encode_sequence(xdr, &args->seq_args, &hdr);
2389 encode_putfh(xdr, args->fh, &hdr);
2390 encode_readlink(xdr, args, req, &hdr);
2391
2392 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2393 args->pgbase, args->pglen);
2394 encode_nops(&hdr);
2395 }
2396
2397 /*
2398 * Encode a READDIR request
2399 */
2400 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2401 const struct nfs4_readdir_arg *args)
2402 {
2403 struct compound_hdr hdr = {
2404 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2405 };
2406
2407 encode_compound_hdr(xdr, req, &hdr);
2408 encode_sequence(xdr, &args->seq_args, &hdr);
2409 encode_putfh(xdr, args->fh, &hdr);
2410 encode_readdir(xdr, args, req, &hdr);
2411
2412 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2413 args->pgbase, args->count);
2414 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2415 __func__, hdr.replen << 2, args->pages,
2416 args->pgbase, args->count);
2417 encode_nops(&hdr);
2418 }
2419
2420 /*
2421 * Encode a READ request
2422 */
2423 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2424 struct nfs_readargs *args)
2425 {
2426 struct compound_hdr hdr = {
2427 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2428 };
2429
2430 encode_compound_hdr(xdr, req, &hdr);
2431 encode_sequence(xdr, &args->seq_args, &hdr);
2432 encode_putfh(xdr, args->fh, &hdr);
2433 encode_read(xdr, args, &hdr);
2434
2435 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2436 args->pages, args->pgbase, args->count);
2437 req->rq_rcv_buf.flags |= XDRBUF_READ;
2438 encode_nops(&hdr);
2439 }
2440
2441 /*
2442 * Encode an SETATTR request
2443 */
2444 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2445 struct nfs_setattrargs *args)
2446 {
2447 struct compound_hdr hdr = {
2448 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2449 };
2450
2451 encode_compound_hdr(xdr, req, &hdr);
2452 encode_sequence(xdr, &args->seq_args, &hdr);
2453 encode_putfh(xdr, args->fh, &hdr);
2454 encode_setattr(xdr, args, args->server, &hdr);
2455 encode_getfattr(xdr, args->bitmask, &hdr);
2456 encode_nops(&hdr);
2457 }
2458
2459 /*
2460 * Encode a GETACL request
2461 */
2462 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2463 struct nfs_getaclargs *args)
2464 {
2465 struct compound_hdr hdr = {
2466 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2467 };
2468 uint32_t replen;
2469
2470 encode_compound_hdr(xdr, req, &hdr);
2471 encode_sequence(xdr, &args->seq_args, &hdr);
2472 encode_putfh(xdr, args->fh, &hdr);
2473 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2474 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2475
2476 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2477 args->acl_pages, args->acl_pgbase, args->acl_len);
2478
2479 encode_nops(&hdr);
2480 }
2481
2482 /*
2483 * Encode a WRITE request
2484 */
2485 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2486 struct nfs_writeargs *args)
2487 {
2488 struct compound_hdr hdr = {
2489 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2490 };
2491
2492 encode_compound_hdr(xdr, req, &hdr);
2493 encode_sequence(xdr, &args->seq_args, &hdr);
2494 encode_putfh(xdr, args->fh, &hdr);
2495 encode_write(xdr, args, &hdr);
2496 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2497 if (args->bitmask)
2498 encode_getfattr(xdr, args->bitmask, &hdr);
2499 encode_nops(&hdr);
2500 }
2501
2502 /*
2503 * a COMMIT request
2504 */
2505 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2506 struct nfs_commitargs *args)
2507 {
2508 struct compound_hdr hdr = {
2509 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2510 };
2511
2512 encode_compound_hdr(xdr, req, &hdr);
2513 encode_sequence(xdr, &args->seq_args, &hdr);
2514 encode_putfh(xdr, args->fh, &hdr);
2515 encode_commit(xdr, args, &hdr);
2516 encode_nops(&hdr);
2517 }
2518
2519 /*
2520 * FSINFO request
2521 */
2522 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2523 struct nfs4_fsinfo_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_fsinfo(xdr, args->bitmask, &hdr);
2533 encode_nops(&hdr);
2534 }
2535
2536 /*
2537 * a PATHCONF request
2538 */
2539 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2540 const struct nfs4_pathconf_arg *args)
2541 {
2542 struct compound_hdr hdr = {
2543 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2544 };
2545
2546 encode_compound_hdr(xdr, req, &hdr);
2547 encode_sequence(xdr, &args->seq_args, &hdr);
2548 encode_putfh(xdr, args->fh, &hdr);
2549 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2550 &hdr);
2551 encode_nops(&hdr);
2552 }
2553
2554 /*
2555 * a STATFS request
2556 */
2557 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2558 const struct nfs4_statfs_arg *args)
2559 {
2560 struct compound_hdr hdr = {
2561 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2562 };
2563
2564 encode_compound_hdr(xdr, req, &hdr);
2565 encode_sequence(xdr, &args->seq_args, &hdr);
2566 encode_putfh(xdr, args->fh, &hdr);
2567 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2568 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2569 encode_nops(&hdr);
2570 }
2571
2572 /*
2573 * GETATTR_BITMAP request
2574 */
2575 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2576 struct xdr_stream *xdr,
2577 struct nfs4_server_caps_arg *args)
2578 {
2579 struct compound_hdr hdr = {
2580 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2581 };
2582
2583 encode_compound_hdr(xdr, req, &hdr);
2584 encode_sequence(xdr, &args->seq_args, &hdr);
2585 encode_putfh(xdr, args->fhandle, &hdr);
2586 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2587 FATTR4_WORD0_FH_EXPIRE_TYPE|
2588 FATTR4_WORD0_LINK_SUPPORT|
2589 FATTR4_WORD0_SYMLINK_SUPPORT|
2590 FATTR4_WORD0_ACLSUPPORT, &hdr);
2591 encode_nops(&hdr);
2592 }
2593
2594 /*
2595 * a RENEW request
2596 */
2597 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2598 struct nfs_client *clp)
2599 {
2600 struct compound_hdr hdr = {
2601 .nops = 0,
2602 };
2603
2604 encode_compound_hdr(xdr, req, &hdr);
2605 encode_renew(xdr, clp->cl_clientid, &hdr);
2606 encode_nops(&hdr);
2607 }
2608
2609 /*
2610 * a SETCLIENTID request
2611 */
2612 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2613 struct xdr_stream *xdr,
2614 struct nfs4_setclientid *sc)
2615 {
2616 struct compound_hdr hdr = {
2617 .nops = 0,
2618 };
2619
2620 encode_compound_hdr(xdr, req, &hdr);
2621 encode_setclientid(xdr, sc, &hdr);
2622 encode_nops(&hdr);
2623 }
2624
2625 /*
2626 * a SETCLIENTID_CONFIRM request
2627 */
2628 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2629 struct xdr_stream *xdr,
2630 struct nfs4_setclientid_res *arg)
2631 {
2632 struct compound_hdr hdr = {
2633 .nops = 0,
2634 };
2635
2636 encode_compound_hdr(xdr, req, &hdr);
2637 encode_setclientid_confirm(xdr, arg, &hdr);
2638 encode_nops(&hdr);
2639 }
2640
2641 /*
2642 * DELEGRETURN request
2643 */
2644 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2645 struct xdr_stream *xdr,
2646 const struct nfs4_delegreturnargs *args)
2647 {
2648 struct compound_hdr hdr = {
2649 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2650 };
2651
2652 encode_compound_hdr(xdr, req, &hdr);
2653 encode_sequence(xdr, &args->seq_args, &hdr);
2654 encode_putfh(xdr, args->fhandle, &hdr);
2655 encode_getfattr(xdr, args->bitmask, &hdr);
2656 encode_delegreturn(xdr, args->stateid, &hdr);
2657 encode_nops(&hdr);
2658 }
2659
2660 /*
2661 * Encode FS_LOCATIONS request
2662 */
2663 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2664 struct xdr_stream *xdr,
2665 struct nfs4_fs_locations_arg *args)
2666 {
2667 struct compound_hdr hdr = {
2668 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2669 };
2670 uint32_t replen;
2671
2672 encode_compound_hdr(xdr, req, &hdr);
2673 encode_sequence(xdr, &args->seq_args, &hdr);
2674 encode_putfh(xdr, args->dir_fh, &hdr);
2675 encode_lookup(xdr, args->name, &hdr);
2676 replen = hdr.replen; /* get the attribute into args->page */
2677 encode_fs_locations(xdr, args->bitmask, &hdr);
2678
2679 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2680 0, PAGE_SIZE);
2681 encode_nops(&hdr);
2682 }
2683
2684 /*
2685 * Encode SECINFO request
2686 */
2687 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2688 struct xdr_stream *xdr,
2689 struct nfs4_secinfo_arg *args)
2690 {
2691 struct compound_hdr hdr = {
2692 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2693 };
2694
2695 encode_compound_hdr(xdr, req, &hdr);
2696 encode_sequence(xdr, &args->seq_args, &hdr);
2697 encode_putfh(xdr, args->dir_fh, &hdr);
2698 encode_secinfo(xdr, args->name, &hdr);
2699 encode_nops(&hdr);
2700 }
2701
2702 #if defined(CONFIG_NFS_V4_1)
2703 /*
2704 * BIND_CONN_TO_SESSION request
2705 */
2706 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2707 struct xdr_stream *xdr,
2708 struct nfs_client *clp)
2709 {
2710 struct compound_hdr hdr = {
2711 .minorversion = clp->cl_mvops->minor_version,
2712 };
2713
2714 encode_compound_hdr(xdr, req, &hdr);
2715 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2716 encode_nops(&hdr);
2717 }
2718
2719 /*
2720 * EXCHANGE_ID request
2721 */
2722 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2723 struct xdr_stream *xdr,
2724 struct nfs41_exchange_id_args *args)
2725 {
2726 struct compound_hdr hdr = {
2727 .minorversion = args->client->cl_mvops->minor_version,
2728 };
2729
2730 encode_compound_hdr(xdr, req, &hdr);
2731 encode_exchange_id(xdr, args, &hdr);
2732 encode_nops(&hdr);
2733 }
2734
2735 /*
2736 * a CREATE_SESSION request
2737 */
2738 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2739 struct xdr_stream *xdr,
2740 struct nfs41_create_session_args *args)
2741 {
2742 struct compound_hdr hdr = {
2743 .minorversion = args->client->cl_mvops->minor_version,
2744 };
2745
2746 encode_compound_hdr(xdr, req, &hdr);
2747 encode_create_session(xdr, args, &hdr);
2748 encode_nops(&hdr);
2749 }
2750
2751 /*
2752 * a DESTROY_SESSION request
2753 */
2754 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2755 struct xdr_stream *xdr,
2756 struct nfs4_session *session)
2757 {
2758 struct compound_hdr hdr = {
2759 .minorversion = session->clp->cl_mvops->minor_version,
2760 };
2761
2762 encode_compound_hdr(xdr, req, &hdr);
2763 encode_destroy_session(xdr, session, &hdr);
2764 encode_nops(&hdr);
2765 }
2766
2767 /*
2768 * a DESTROY_CLIENTID request
2769 */
2770 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2771 struct xdr_stream *xdr,
2772 struct nfs_client *clp)
2773 {
2774 struct compound_hdr hdr = {
2775 .minorversion = clp->cl_mvops->minor_version,
2776 };
2777
2778 encode_compound_hdr(xdr, req, &hdr);
2779 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2780 encode_nops(&hdr);
2781 }
2782
2783 /*
2784 * a SEQUENCE request
2785 */
2786 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2787 struct nfs4_sequence_args *args)
2788 {
2789 struct compound_hdr hdr = {
2790 .minorversion = nfs4_xdr_minorversion(args),
2791 };
2792
2793 encode_compound_hdr(xdr, req, &hdr);
2794 encode_sequence(xdr, args, &hdr);
2795 encode_nops(&hdr);
2796 }
2797
2798 /*
2799 * a GET_LEASE_TIME request
2800 */
2801 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2802 struct xdr_stream *xdr,
2803 struct nfs4_get_lease_time_args *args)
2804 {
2805 struct compound_hdr hdr = {
2806 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2807 };
2808 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2809
2810 encode_compound_hdr(xdr, req, &hdr);
2811 encode_sequence(xdr, &args->la_seq_args, &hdr);
2812 encode_putrootfh(xdr, &hdr);
2813 encode_fsinfo(xdr, lease_bitmap, &hdr);
2814 encode_nops(&hdr);
2815 }
2816
2817 /*
2818 * a RECLAIM_COMPLETE request
2819 */
2820 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2821 struct xdr_stream *xdr,
2822 struct nfs41_reclaim_complete_args *args)
2823 {
2824 struct compound_hdr hdr = {
2825 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2826 };
2827
2828 encode_compound_hdr(xdr, req, &hdr);
2829 encode_sequence(xdr, &args->seq_args, &hdr);
2830 encode_reclaim_complete(xdr, args, &hdr);
2831 encode_nops(&hdr);
2832 }
2833
2834 /*
2835 * Encode GETDEVICELIST request
2836 */
2837 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2838 struct xdr_stream *xdr,
2839 struct nfs4_getdevicelist_args *args)
2840 {
2841 struct compound_hdr hdr = {
2842 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2843 };
2844
2845 encode_compound_hdr(xdr, req, &hdr);
2846 encode_sequence(xdr, &args->seq_args, &hdr);
2847 encode_putfh(xdr, args->fh, &hdr);
2848 encode_getdevicelist(xdr, args, &hdr);
2849 encode_nops(&hdr);
2850 }
2851
2852 /*
2853 * Encode GETDEVICEINFO request
2854 */
2855 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2856 struct xdr_stream *xdr,
2857 struct nfs4_getdeviceinfo_args *args)
2858 {
2859 struct compound_hdr hdr = {
2860 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2861 };
2862
2863 encode_compound_hdr(xdr, req, &hdr);
2864 encode_sequence(xdr, &args->seq_args, &hdr);
2865 encode_getdeviceinfo(xdr, args, &hdr);
2866
2867 /* set up reply kvec. Subtract notification bitmap max size (2)
2868 * so that notification bitmap is put in xdr_buf tail */
2869 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2870 args->pdev->pages, args->pdev->pgbase,
2871 args->pdev->pglen);
2872
2873 encode_nops(&hdr);
2874 }
2875
2876 /*
2877 * Encode LAYOUTGET request
2878 */
2879 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2880 struct xdr_stream *xdr,
2881 struct nfs4_layoutget_args *args)
2882 {
2883 struct compound_hdr hdr = {
2884 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2885 };
2886
2887 encode_compound_hdr(xdr, req, &hdr);
2888 encode_sequence(xdr, &args->seq_args, &hdr);
2889 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2890 encode_layoutget(xdr, args, &hdr);
2891
2892 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2893 args->layout.pages, 0, args->layout.pglen);
2894
2895 encode_nops(&hdr);
2896 }
2897
2898 /*
2899 * Encode LAYOUTCOMMIT request
2900 */
2901 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2902 struct xdr_stream *xdr,
2903 struct nfs4_layoutcommit_args *args)
2904 {
2905 struct nfs4_layoutcommit_data *data =
2906 container_of(args, struct nfs4_layoutcommit_data, args);
2907 struct compound_hdr hdr = {
2908 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2909 };
2910
2911 encode_compound_hdr(xdr, req, &hdr);
2912 encode_sequence(xdr, &args->seq_args, &hdr);
2913 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2914 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2915 encode_getfattr(xdr, args->bitmask, &hdr);
2916 encode_nops(&hdr);
2917 }
2918
2919 /*
2920 * Encode LAYOUTRETURN request
2921 */
2922 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2923 struct xdr_stream *xdr,
2924 struct nfs4_layoutreturn_args *args)
2925 {
2926 struct compound_hdr hdr = {
2927 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2928 };
2929
2930 encode_compound_hdr(xdr, req, &hdr);
2931 encode_sequence(xdr, &args->seq_args, &hdr);
2932 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2933 encode_layoutreturn(xdr, args, &hdr);
2934 encode_nops(&hdr);
2935 }
2936
2937 /*
2938 * Encode SECINFO_NO_NAME request
2939 */
2940 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2941 struct xdr_stream *xdr,
2942 struct nfs41_secinfo_no_name_args *args)
2943 {
2944 struct compound_hdr hdr = {
2945 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2946 };
2947
2948 encode_compound_hdr(xdr, req, &hdr);
2949 encode_sequence(xdr, &args->seq_args, &hdr);
2950 encode_putrootfh(xdr, &hdr);
2951 encode_secinfo_no_name(xdr, args, &hdr);
2952 encode_nops(&hdr);
2953 return 0;
2954 }
2955
2956 /*
2957 * Encode TEST_STATEID request
2958 */
2959 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2960 struct xdr_stream *xdr,
2961 struct nfs41_test_stateid_args *args)
2962 {
2963 struct compound_hdr hdr = {
2964 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2965 };
2966
2967 encode_compound_hdr(xdr, req, &hdr);
2968 encode_sequence(xdr, &args->seq_args, &hdr);
2969 encode_test_stateid(xdr, args, &hdr);
2970 encode_nops(&hdr);
2971 }
2972
2973 /*
2974 * Encode FREE_STATEID request
2975 */
2976 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2977 struct xdr_stream *xdr,
2978 struct nfs41_free_stateid_args *args)
2979 {
2980 struct compound_hdr hdr = {
2981 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2982 };
2983
2984 encode_compound_hdr(xdr, req, &hdr);
2985 encode_sequence(xdr, &args->seq_args, &hdr);
2986 encode_free_stateid(xdr, args, &hdr);
2987 encode_nops(&hdr);
2988 }
2989 #endif /* CONFIG_NFS_V4_1 */
2990
2991 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2992 {
2993 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2994 "Remaining buffer length is %tu words.\n",
2995 func, xdr->end - xdr->p);
2996 }
2997
2998 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2999 {
3000 __be32 *p;
3001
3002 p = xdr_inline_decode(xdr, 4);
3003 if (unlikely(!p))
3004 goto out_overflow;
3005 *len = be32_to_cpup(p);
3006 p = xdr_inline_decode(xdr, *len);
3007 if (unlikely(!p))
3008 goto out_overflow;
3009 *string = (char *)p;
3010 return 0;
3011 out_overflow:
3012 print_overflow_msg(__func__, xdr);
3013 return -EIO;
3014 }
3015
3016 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3017 {
3018 __be32 *p;
3019
3020 p = xdr_inline_decode(xdr, 8);
3021 if (unlikely(!p))
3022 goto out_overflow;
3023 hdr->status = be32_to_cpup(p++);
3024 hdr->taglen = be32_to_cpup(p);
3025
3026 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3027 if (unlikely(!p))
3028 goto out_overflow;
3029 hdr->tag = (char *)p;
3030 p += XDR_QUADLEN(hdr->taglen);
3031 hdr->nops = be32_to_cpup(p);
3032 if (unlikely(hdr->nops < 1))
3033 return nfs4_stat_to_errno(hdr->status);
3034 return 0;
3035 out_overflow:
3036 print_overflow_msg(__func__, xdr);
3037 return -EIO;
3038 }
3039
3040 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3041 {
3042 __be32 *p;
3043 uint32_t opnum;
3044 int32_t nfserr;
3045
3046 p = xdr_inline_decode(xdr, 8);
3047 if (unlikely(!p))
3048 goto out_overflow;
3049 opnum = be32_to_cpup(p++);
3050 if (opnum != expected) {
3051 dprintk("nfs: Server returned operation"
3052 " %d but we issued a request for %d\n",
3053 opnum, expected);
3054 return -EIO;
3055 }
3056 nfserr = be32_to_cpup(p);
3057 if (nfserr != NFS_OK)
3058 return nfs4_stat_to_errno(nfserr);
3059 return 0;
3060 out_overflow:
3061 print_overflow_msg(__func__, xdr);
3062 return -EIO;
3063 }
3064
3065 /* Dummy routine */
3066 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3067 {
3068 __be32 *p;
3069 unsigned int strlen;
3070 char *str;
3071
3072 p = xdr_inline_decode(xdr, 12);
3073 if (likely(p))
3074 return decode_opaque_inline(xdr, &strlen, &str);
3075 print_overflow_msg(__func__, xdr);
3076 return -EIO;
3077 }
3078
3079 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3080 {
3081 uint32_t bmlen;
3082 __be32 *p;
3083
3084 p = xdr_inline_decode(xdr, 4);
3085 if (unlikely(!p))
3086 goto out_overflow;
3087 bmlen = be32_to_cpup(p);
3088
3089 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3090 p = xdr_inline_decode(xdr, (bmlen << 2));
3091 if (unlikely(!p))
3092 goto out_overflow;
3093 if (bmlen > 0) {
3094 bitmap[0] = be32_to_cpup(p++);
3095 if (bmlen > 1) {
3096 bitmap[1] = be32_to_cpup(p++);
3097 if (bmlen > 2)
3098 bitmap[2] = be32_to_cpup(p);
3099 }
3100 }
3101 return 0;
3102 out_overflow:
3103 print_overflow_msg(__func__, xdr);
3104 return -EIO;
3105 }
3106
3107 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3108 {
3109 __be32 *p;
3110
3111 p = xdr_inline_decode(xdr, 4);
3112 if (unlikely(!p))
3113 goto out_overflow;
3114 *attrlen = be32_to_cpup(p);
3115 *savep = xdr_stream_pos(xdr);
3116 return 0;
3117 out_overflow:
3118 print_overflow_msg(__func__, xdr);
3119 return -EIO;
3120 }
3121
3122 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3123 {
3124 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3125 int ret;
3126 ret = decode_attr_bitmap(xdr, bitmask);
3127 if (unlikely(ret < 0))
3128 return ret;
3129 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3130 } else
3131 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3132 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3133 bitmask[0], bitmask[1], bitmask[2]);
3134 return 0;
3135 }
3136
3137 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3138 {
3139 __be32 *p;
3140 int ret = 0;
3141
3142 *type = 0;
3143 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3144 return -EIO;
3145 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3146 p = xdr_inline_decode(xdr, 4);
3147 if (unlikely(!p))
3148 goto out_overflow;
3149 *type = be32_to_cpup(p);
3150 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3151 dprintk("%s: bad type %d\n", __func__, *type);
3152 return -EIO;
3153 }
3154 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3155 ret = NFS_ATTR_FATTR_TYPE;
3156 }
3157 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3158 return ret;
3159 out_overflow:
3160 print_overflow_msg(__func__, xdr);
3161 return -EIO;
3162 }
3163
3164 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3165 uint32_t *bitmap, uint32_t *type)
3166 {
3167 __be32 *p;
3168
3169 *type = 0;
3170 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3171 return -EIO;
3172 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3173 p = xdr_inline_decode(xdr, 4);
3174 if (unlikely(!p))
3175 goto out_overflow;
3176 *type = be32_to_cpup(p);
3177 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3178 }
3179 dprintk("%s: expire type=0x%x\n", __func__, *type);
3180 return 0;
3181 out_overflow:
3182 print_overflow_msg(__func__, xdr);
3183 return -EIO;
3184 }
3185
3186 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3187 {
3188 __be32 *p;
3189 int ret = 0;
3190
3191 *change = 0;
3192 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3193 return -EIO;
3194 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3195 p = xdr_inline_decode(xdr, 8);
3196 if (unlikely(!p))
3197 goto out_overflow;
3198 xdr_decode_hyper(p, change);
3199 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3200 ret = NFS_ATTR_FATTR_CHANGE;
3201 }
3202 dprintk("%s: change attribute=%Lu\n", __func__,
3203 (unsigned long long)*change);
3204 return ret;
3205 out_overflow:
3206 print_overflow_msg(__func__, xdr);
3207 return -EIO;
3208 }
3209
3210 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3211 {
3212 __be32 *p;
3213 int ret = 0;
3214
3215 *size = 0;
3216 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3217 return -EIO;
3218 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3219 p = xdr_inline_decode(xdr, 8);
3220 if (unlikely(!p))
3221 goto out_overflow;
3222 xdr_decode_hyper(p, size);
3223 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3224 ret = NFS_ATTR_FATTR_SIZE;
3225 }
3226 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3227 return ret;
3228 out_overflow:
3229 print_overflow_msg(__func__, xdr);
3230 return -EIO;
3231 }
3232
3233 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3234 {
3235 __be32 *p;
3236
3237 *res = 0;
3238 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3239 return -EIO;
3240 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3241 p = xdr_inline_decode(xdr, 4);
3242 if (unlikely(!p))
3243 goto out_overflow;
3244 *res = be32_to_cpup(p);
3245 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3246 }
3247 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3248 return 0;
3249 out_overflow:
3250 print_overflow_msg(__func__, xdr);
3251 return -EIO;
3252 }
3253
3254 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3255 {
3256 __be32 *p;
3257
3258 *res = 0;
3259 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3260 return -EIO;
3261 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3262 p = xdr_inline_decode(xdr, 4);
3263 if (unlikely(!p))
3264 goto out_overflow;
3265 *res = be32_to_cpup(p);
3266 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3267 }
3268 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3269 return 0;
3270 out_overflow:
3271 print_overflow_msg(__func__, xdr);
3272 return -EIO;
3273 }
3274
3275 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3276 {
3277 __be32 *p;
3278 int ret = 0;
3279
3280 fsid->major = 0;
3281 fsid->minor = 0;
3282 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3283 return -EIO;
3284 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3285 p = xdr_inline_decode(xdr, 16);
3286 if (unlikely(!p))
3287 goto out_overflow;
3288 p = xdr_decode_hyper(p, &fsid->major);
3289 xdr_decode_hyper(p, &fsid->minor);
3290 bitmap[0] &= ~FATTR4_WORD0_FSID;
3291 ret = NFS_ATTR_FATTR_FSID;
3292 }
3293 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3294 (unsigned long long)fsid->major,
3295 (unsigned long long)fsid->minor);
3296 return ret;
3297 out_overflow:
3298 print_overflow_msg(__func__, xdr);
3299 return -EIO;
3300 }
3301
3302 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3303 {
3304 __be32 *p;
3305
3306 *res = 60;
3307 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3308 return -EIO;
3309 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3310 p = xdr_inline_decode(xdr, 4);
3311 if (unlikely(!p))
3312 goto out_overflow;
3313 *res = be32_to_cpup(p);
3314 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3315 }
3316 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3317 return 0;
3318 out_overflow:
3319 print_overflow_msg(__func__, xdr);
3320 return -EIO;
3321 }
3322
3323 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3324 {
3325 __be32 *p;
3326
3327 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3328 return -EIO;
3329 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3330 p = xdr_inline_decode(xdr, 4);
3331 if (unlikely(!p))
3332 goto out_overflow;
3333 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3334 *res = -be32_to_cpup(p);
3335 }
3336 return 0;
3337 out_overflow:
3338 print_overflow_msg(__func__, xdr);
3339 return -EIO;
3340 }
3341
3342 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3343 {
3344 __be32 *p;
3345 int len;
3346
3347 if (fh != NULL)
3348 memset(fh, 0, sizeof(*fh));
3349
3350 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3351 return -EIO;
3352 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3353 p = xdr_inline_decode(xdr, 4);
3354 if (unlikely(!p))
3355 goto out_overflow;
3356 len = be32_to_cpup(p);
3357 if (len > NFS4_FHSIZE)
3358 return -EIO;
3359 p = xdr_inline_decode(xdr, len);
3360 if (unlikely(!p))
3361 goto out_overflow;
3362 if (fh != NULL) {
3363 memcpy(fh->data, p, len);
3364 fh->size = len;
3365 }
3366 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3367 }
3368 return 0;
3369 out_overflow:
3370 print_overflow_msg(__func__, xdr);
3371 return -EIO;
3372 }
3373
3374 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3375 {
3376 __be32 *p;
3377
3378 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3379 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3380 return -EIO;
3381 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3382 p = xdr_inline_decode(xdr, 4);
3383 if (unlikely(!p))
3384 goto out_overflow;
3385 *res = be32_to_cpup(p);
3386 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3387 }
3388 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3389 return 0;
3390 out_overflow:
3391 print_overflow_msg(__func__, xdr);
3392 return -EIO;
3393 }
3394
3395 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3396 {
3397 __be32 *p;
3398 int ret = 0;
3399
3400 *fileid = 0;
3401 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3402 return -EIO;
3403 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3404 p = xdr_inline_decode(xdr, 8);
3405 if (unlikely(!p))
3406 goto out_overflow;
3407 xdr_decode_hyper(p, fileid);
3408 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3409 ret = NFS_ATTR_FATTR_FILEID;
3410 }
3411 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3412 return ret;
3413 out_overflow:
3414 print_overflow_msg(__func__, xdr);
3415 return -EIO;
3416 }
3417
3418 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3419 {
3420 __be32 *p;
3421 int ret = 0;
3422
3423 *fileid = 0;
3424 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3425 return -EIO;
3426 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3427 p = xdr_inline_decode(xdr, 8);
3428 if (unlikely(!p))
3429 goto out_overflow;
3430 xdr_decode_hyper(p, fileid);
3431 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3432 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3433 }
3434 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3435 return ret;
3436 out_overflow:
3437 print_overflow_msg(__func__, xdr);
3438 return -EIO;
3439 }
3440
3441 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3442 {
3443 __be32 *p;
3444 int status = 0;
3445
3446 *res = 0;
3447 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3448 return -EIO;
3449 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3450 p = xdr_inline_decode(xdr, 8);
3451 if (unlikely(!p))
3452 goto out_overflow;
3453 xdr_decode_hyper(p, res);
3454 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3455 }
3456 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3457 return status;
3458 out_overflow:
3459 print_overflow_msg(__func__, xdr);
3460 return -EIO;
3461 }
3462
3463 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3464 {
3465 __be32 *p;
3466 int status = 0;
3467
3468 *res = 0;
3469 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3470 return -EIO;
3471 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3472 p = xdr_inline_decode(xdr, 8);
3473 if (unlikely(!p))
3474 goto out_overflow;
3475 xdr_decode_hyper(p, res);
3476 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3477 }
3478 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3479 return status;
3480 out_overflow:
3481 print_overflow_msg(__func__, xdr);
3482 return -EIO;
3483 }
3484
3485 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3486 {
3487 __be32 *p;
3488 int status = 0;
3489
3490 *res = 0;
3491 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3492 return -EIO;
3493 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3494 p = xdr_inline_decode(xdr, 8);
3495 if (unlikely(!p))
3496 goto out_overflow;
3497 xdr_decode_hyper(p, res);
3498 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3499 }
3500 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3501 return status;
3502 out_overflow:
3503 print_overflow_msg(__func__, xdr);
3504 return -EIO;
3505 }
3506
3507 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3508 {
3509 u32 n;
3510 __be32 *p;
3511 int status = 0;
3512
3513 p = xdr_inline_decode(xdr, 4);
3514 if (unlikely(!p))
3515 goto out_overflow;
3516 n = be32_to_cpup(p);
3517 if (n == 0)
3518 goto root_path;
3519 dprintk("pathname4: ");
3520 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3521 dprintk("cannot parse %d components in path\n", n);
3522 goto out_eio;
3523 }
3524 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3525 struct nfs4_string *component = &path->components[path->ncomponents];
3526 status = decode_opaque_inline(xdr, &component->len, &component->data);
3527 if (unlikely(status != 0))
3528 goto out_eio;
3529 ifdebug (XDR)
3530 pr_cont("%s%.*s ",
3531 (path->ncomponents != n ? "/ " : ""),
3532 component->len, component->data);
3533 }
3534 out:
3535 return status;
3536 root_path:
3537 /* a root pathname is sent as a zero component4 */
3538 path->ncomponents = 1;
3539 path->components[0].len=0;
3540 path->components[0].data=NULL;
3541 dprintk("pathname4: /\n");
3542 goto out;
3543 out_eio:
3544 dprintk(" status %d", status);
3545 status = -EIO;
3546 goto out;
3547 out_overflow:
3548 print_overflow_msg(__func__, xdr);
3549 return -EIO;
3550 }
3551
3552 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3553 {
3554 int n;
3555 __be32 *p;
3556 int status = -EIO;
3557
3558 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3559 goto out;
3560 status = 0;
3561 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3562 goto out;
3563 status = -EIO;
3564 /* Ignore borken servers that return unrequested attrs */
3565 if (unlikely(res == NULL))
3566 goto out;
3567 dprintk("%s: fsroot:\n", __func__);
3568 status = decode_pathname(xdr, &res->fs_path);
3569 if (unlikely(status != 0))
3570 goto out;
3571 p = xdr_inline_decode(xdr, 4);
3572 if (unlikely(!p))
3573 goto out_overflow;
3574 n = be32_to_cpup(p);
3575 if (n <= 0)
3576 goto out_eio;
3577 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3578 u32 m;
3579 struct nfs4_fs_location *loc;
3580
3581 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3582 break;
3583 loc = &res->locations[res->nlocations];
3584 p = xdr_inline_decode(xdr, 4);
3585 if (unlikely(!p))
3586 goto out_overflow;
3587 m = be32_to_cpup(p);
3588
3589 dprintk("%s: servers:\n", __func__);
3590 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3591 struct nfs4_string *server;
3592
3593 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3594 unsigned int i;
3595 dprintk("%s: using first %u of %u servers "
3596 "returned for location %u\n",
3597 __func__,
3598 NFS4_FS_LOCATION_MAXSERVERS,
3599 m, res->nlocations);
3600 for (i = loc->nservers; i < m; i++) {
3601 unsigned int len;
3602 char *data;
3603 status = decode_opaque_inline(xdr, &len, &data);
3604 if (unlikely(status != 0))
3605 goto out_eio;
3606 }
3607 break;
3608 }
3609 server = &loc->servers[loc->nservers];
3610 status = decode_opaque_inline(xdr, &server->len, &server->data);
3611 if (unlikely(status != 0))
3612 goto out_eio;
3613 dprintk("%s ", server->data);
3614 }
3615 status = decode_pathname(xdr, &loc->rootpath);
3616 if (unlikely(status != 0))
3617 goto out_eio;
3618 }
3619 if (res->nlocations != 0)
3620 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3621 out:
3622 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3623 return status;
3624 out_overflow:
3625 print_overflow_msg(__func__, xdr);
3626 out_eio:
3627 status = -EIO;
3628 goto out;
3629 }
3630
3631 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3632 {
3633 __be32 *p;
3634 int status = 0;
3635
3636 *res = 0;
3637 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3638 return -EIO;
3639 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3640 p = xdr_inline_decode(xdr, 8);
3641 if (unlikely(!p))
3642 goto out_overflow;
3643 xdr_decode_hyper(p, res);
3644 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3645 }
3646 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3647 return status;
3648 out_overflow:
3649 print_overflow_msg(__func__, xdr);
3650 return -EIO;
3651 }
3652
3653 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3654 {
3655 __be32 *p;
3656 int status = 0;
3657
3658 *maxlink = 1;
3659 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3660 return -EIO;
3661 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3662 p = xdr_inline_decode(xdr, 4);
3663 if (unlikely(!p))
3664 goto out_overflow;
3665 *maxlink = be32_to_cpup(p);
3666 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3667 }
3668 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3669 return status;
3670 out_overflow:
3671 print_overflow_msg(__func__, xdr);
3672 return -EIO;
3673 }
3674
3675 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3676 {
3677 __be32 *p;
3678 int status = 0;
3679
3680 *maxname = 1024;
3681 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3682 return -EIO;
3683 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3684 p = xdr_inline_decode(xdr, 4);
3685 if (unlikely(!p))
3686 goto out_overflow;
3687 *maxname = be32_to_cpup(p);
3688 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3689 }
3690 dprintk("%s: maxname=%u\n", __func__, *maxname);
3691 return status;
3692 out_overflow:
3693 print_overflow_msg(__func__, xdr);
3694 return -EIO;
3695 }
3696
3697 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3698 {
3699 __be32 *p;
3700 int status = 0;
3701
3702 *res = 1024;
3703 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3704 return -EIO;
3705 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3706 uint64_t maxread;
3707 p = xdr_inline_decode(xdr, 8);
3708 if (unlikely(!p))
3709 goto out_overflow;
3710 xdr_decode_hyper(p, &maxread);
3711 if (maxread > 0x7FFFFFFF)
3712 maxread = 0x7FFFFFFF;
3713 *res = (uint32_t)maxread;
3714 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3715 }
3716 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3717 return status;
3718 out_overflow:
3719 print_overflow_msg(__func__, xdr);
3720 return -EIO;
3721 }
3722
3723 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3724 {
3725 __be32 *p;
3726 int status = 0;
3727
3728 *res = 1024;
3729 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3730 return -EIO;
3731 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3732 uint64_t maxwrite;
3733 p = xdr_inline_decode(xdr, 8);
3734 if (unlikely(!p))
3735 goto out_overflow;
3736 xdr_decode_hyper(p, &maxwrite);
3737 if (maxwrite > 0x7FFFFFFF)
3738 maxwrite = 0x7FFFFFFF;
3739 *res = (uint32_t)maxwrite;
3740 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3741 }
3742 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3743 return status;
3744 out_overflow:
3745 print_overflow_msg(__func__, xdr);
3746 return -EIO;
3747 }
3748
3749 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3750 {
3751 uint32_t tmp;
3752 __be32 *p;
3753 int ret = 0;
3754
3755 *mode = 0;
3756 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3757 return -EIO;
3758 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3759 p = xdr_inline_decode(xdr, 4);
3760 if (unlikely(!p))
3761 goto out_overflow;
3762 tmp = be32_to_cpup(p);
3763 *mode = tmp & ~S_IFMT;
3764 bitmap[1] &= ~FATTR4_WORD1_MODE;
3765 ret = NFS_ATTR_FATTR_MODE;
3766 }
3767 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3768 return ret;
3769 out_overflow:
3770 print_overflow_msg(__func__, xdr);
3771 return -EIO;
3772 }
3773
3774 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3775 {
3776 __be32 *p;
3777 int ret = 0;
3778
3779 *nlink = 1;
3780 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3781 return -EIO;
3782 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3783 p = xdr_inline_decode(xdr, 4);
3784 if (unlikely(!p))
3785 goto out_overflow;
3786 *nlink = be32_to_cpup(p);
3787 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3788 ret = NFS_ATTR_FATTR_NLINK;
3789 }
3790 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3791 return ret;
3792 out_overflow:
3793 print_overflow_msg(__func__, xdr);
3794 return -EIO;
3795 }
3796
3797 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3798 const struct nfs_server *server, kuid_t *uid,
3799 struct nfs4_string *owner_name)
3800 {
3801 uint32_t len;
3802 __be32 *p;
3803 int ret = 0;
3804
3805 *uid = make_kuid(&init_user_ns, -2);
3806 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3807 return -EIO;
3808 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3809 p = xdr_inline_decode(xdr, 4);
3810 if (unlikely(!p))
3811 goto out_overflow;
3812 len = be32_to_cpup(p);
3813 p = xdr_inline_decode(xdr, len);
3814 if (unlikely(!p))
3815 goto out_overflow;
3816 if (owner_name != NULL) {
3817 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3818 if (owner_name->data != NULL) {
3819 owner_name->len = len;
3820 ret = NFS_ATTR_FATTR_OWNER_NAME;
3821 }
3822 } else if (len < XDR_MAX_NETOBJ) {
3823 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3824 ret = NFS_ATTR_FATTR_OWNER;
3825 else
3826 dprintk("%s: nfs_map_name_to_uid failed!\n",
3827 __func__);
3828 } else
3829 dprintk("%s: name too long (%u)!\n",
3830 __func__, len);
3831 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3832 }
3833 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3834 return ret;
3835 out_overflow:
3836 print_overflow_msg(__func__, xdr);
3837 return -EIO;
3838 }
3839
3840 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3841 const struct nfs_server *server, kgid_t *gid,
3842 struct nfs4_string *group_name)
3843 {
3844 uint32_t len;
3845 __be32 *p;
3846 int ret = 0;
3847
3848 *gid = make_kgid(&init_user_ns, -2);
3849 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3850 return -EIO;
3851 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3852 p = xdr_inline_decode(xdr, 4);
3853 if (unlikely(!p))
3854 goto out_overflow;
3855 len = be32_to_cpup(p);
3856 p = xdr_inline_decode(xdr, len);
3857 if (unlikely(!p))
3858 goto out_overflow;
3859 if (group_name != NULL) {
3860 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3861 if (group_name->data != NULL) {
3862 group_name->len = len;
3863 ret = NFS_ATTR_FATTR_GROUP_NAME;
3864 }
3865 } else if (len < XDR_MAX_NETOBJ) {
3866 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3867 ret = NFS_ATTR_FATTR_GROUP;
3868 else
3869 dprintk("%s: nfs_map_group_to_gid failed!\n",
3870 __func__);
3871 } else
3872 dprintk("%s: name too long (%u)!\n",
3873 __func__, len);
3874 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3875 }
3876 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3877 return ret;
3878 out_overflow:
3879 print_overflow_msg(__func__, xdr);
3880 return -EIO;
3881 }
3882
3883 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3884 {
3885 uint32_t major = 0, minor = 0;
3886 __be32 *p;
3887 int ret = 0;
3888
3889 *rdev = MKDEV(0,0);
3890 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3891 return -EIO;
3892 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3893 dev_t tmp;
3894
3895 p = xdr_inline_decode(xdr, 8);
3896 if (unlikely(!p))
3897 goto out_overflow;
3898 major = be32_to_cpup(p++);
3899 minor = be32_to_cpup(p);
3900 tmp = MKDEV(major, minor);
3901 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3902 *rdev = tmp;
3903 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3904 ret = NFS_ATTR_FATTR_RDEV;
3905 }
3906 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3907 return ret;
3908 out_overflow:
3909 print_overflow_msg(__func__, xdr);
3910 return -EIO;
3911 }
3912
3913 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3914 {
3915 __be32 *p;
3916 int status = 0;
3917
3918 *res = 0;
3919 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3920 return -EIO;
3921 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3922 p = xdr_inline_decode(xdr, 8);
3923 if (unlikely(!p))
3924 goto out_overflow;
3925 xdr_decode_hyper(p, res);
3926 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3927 }
3928 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3929 return status;
3930 out_overflow:
3931 print_overflow_msg(__func__, xdr);
3932 return -EIO;
3933 }
3934
3935 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3936 {
3937 __be32 *p;
3938 int status = 0;
3939
3940 *res = 0;
3941 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3942 return -EIO;
3943 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3944 p = xdr_inline_decode(xdr, 8);
3945 if (unlikely(!p))
3946 goto out_overflow;
3947 xdr_decode_hyper(p, res);
3948 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3949 }
3950 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3951 return status;
3952 out_overflow:
3953 print_overflow_msg(__func__, xdr);
3954 return -EIO;
3955 }
3956
3957 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3958 {
3959 __be32 *p;
3960 int status = 0;
3961
3962 *res = 0;
3963 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3964 return -EIO;
3965 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3966 p = xdr_inline_decode(xdr, 8);
3967 if (unlikely(!p))
3968 goto out_overflow;
3969 xdr_decode_hyper(p, res);
3970 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3971 }
3972 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3973 return status;
3974 out_overflow:
3975 print_overflow_msg(__func__, xdr);
3976 return -EIO;
3977 }
3978
3979 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3980 {
3981 __be32 *p;
3982 int ret = 0;
3983
3984 *used = 0;
3985 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3986 return -EIO;
3987 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3988 p = xdr_inline_decode(xdr, 8);
3989 if (unlikely(!p))
3990 goto out_overflow;
3991 xdr_decode_hyper(p, used);
3992 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3993 ret = NFS_ATTR_FATTR_SPACE_USED;
3994 }
3995 dprintk("%s: space used=%Lu\n", __func__,
3996 (unsigned long long)*used);
3997 return ret;
3998 out_overflow:
3999 print_overflow_msg(__func__, xdr);
4000 return -EIO;
4001 }
4002
4003 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4004 {
4005 __be32 *p;
4006 uint64_t sec;
4007 uint32_t nsec;
4008
4009 p = xdr_inline_decode(xdr, 12);
4010 if (unlikely(!p))
4011 goto out_overflow;
4012 p = xdr_decode_hyper(p, &sec);
4013 nsec = be32_to_cpup(p);
4014 time->tv_sec = (time_t)sec;
4015 time->tv_nsec = (long)nsec;
4016 return 0;
4017 out_overflow:
4018 print_overflow_msg(__func__, xdr);
4019 return -EIO;
4020 }
4021
4022 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4023 {
4024 int status = 0;
4025
4026 time->tv_sec = 0;
4027 time->tv_nsec = 0;
4028 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4029 return -EIO;
4030 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4031 status = decode_attr_time(xdr, time);
4032 if (status == 0)
4033 status = NFS_ATTR_FATTR_ATIME;
4034 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4035 }
4036 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4037 return status;
4038 }
4039
4040 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4041 {
4042 int status = 0;
4043
4044 time->tv_sec = 0;
4045 time->tv_nsec = 0;
4046 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4047 return -EIO;
4048 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4049 status = decode_attr_time(xdr, time);
4050 if (status == 0)
4051 status = NFS_ATTR_FATTR_CTIME;
4052 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4053 }
4054 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4055 return status;
4056 }
4057
4058 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4059 struct timespec *time)
4060 {
4061 int status = 0;
4062
4063 time->tv_sec = 0;
4064 time->tv_nsec = 0;
4065 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4066 return -EIO;
4067 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4068 status = decode_attr_time(xdr, time);
4069 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4070 }
4071 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4072 (long)time->tv_nsec);
4073 return status;
4074 }
4075
4076 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4077 struct nfs4_label *label)
4078 {
4079 uint32_t pi = 0;
4080 uint32_t lfs = 0;
4081 __u32 len;
4082 __be32 *p;
4083 int status = 0;
4084
4085 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4086 return -EIO;
4087 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4088 p = xdr_inline_decode(xdr, 4);
4089 if (unlikely(!p))
4090 goto out_overflow;
4091 lfs = be32_to_cpup(p++);
4092 p = xdr_inline_decode(xdr, 4);
4093 if (unlikely(!p))
4094 goto out_overflow;
4095 pi = be32_to_cpup(p++);
4096 p = xdr_inline_decode(xdr, 4);
4097 if (unlikely(!p))
4098 goto out_overflow;
4099 len = be32_to_cpup(p++);
4100 p = xdr_inline_decode(xdr, len);
4101 if (unlikely(!p))
4102 goto out_overflow;
4103 if (len < NFS4_MAXLABELLEN) {
4104 if (label) {
4105 memcpy(label->label, p, len);
4106 label->len = len;
4107 label->pi = pi;
4108 label->lfs = lfs;
4109 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4110 }
4111 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4112 } else
4113 printk(KERN_WARNING "%s: label too long (%u)!\n",
4114 __func__, len);
4115 }
4116 if (label && label->label)
4117 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4118 (char *)label->label, label->len, label->pi, label->lfs);
4119 return status;
4120
4121 out_overflow:
4122 print_overflow_msg(__func__, xdr);
4123 return -EIO;
4124 }
4125
4126 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4127 {
4128 int status = 0;
4129
4130 time->tv_sec = 0;
4131 time->tv_nsec = 0;
4132 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4133 return -EIO;
4134 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4135 status = decode_attr_time(xdr, time);
4136 if (status == 0)
4137 status = NFS_ATTR_FATTR_MTIME;
4138 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4139 }
4140 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4141 return status;
4142 }
4143
4144 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4145 {
4146 unsigned int attrwords = XDR_QUADLEN(attrlen);
4147 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4148
4149 if (unlikely(attrwords != nwords)) {
4150 dprintk("%s: server returned incorrect attribute length: "
4151 "%u %c %u\n",
4152 __func__,
4153 attrwords << 2,
4154 (attrwords < nwords) ? '<' : '>',
4155 nwords << 2);
4156 return -EIO;
4157 }
4158 return 0;
4159 }
4160
4161 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4162 {
4163 __be32 *p;
4164
4165 p = xdr_inline_decode(xdr, 20);
4166 if (unlikely(!p))
4167 goto out_overflow;
4168 cinfo->atomic = be32_to_cpup(p++);
4169 p = xdr_decode_hyper(p, &cinfo->before);
4170 xdr_decode_hyper(p, &cinfo->after);
4171 return 0;
4172 out_overflow:
4173 print_overflow_msg(__func__, xdr);
4174 return -EIO;
4175 }
4176
4177 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4178 {
4179 __be32 *p;
4180 uint32_t supp, acc;
4181 int status;
4182
4183 status = decode_op_hdr(xdr, OP_ACCESS);
4184 if (status)
4185 return status;
4186 p = xdr_inline_decode(xdr, 8);
4187 if (unlikely(!p))
4188 goto out_overflow;
4189 supp = be32_to_cpup(p++);
4190 acc = be32_to_cpup(p);
4191 *supported = supp;
4192 *access = acc;
4193 return 0;
4194 out_overflow:
4195 print_overflow_msg(__func__, xdr);
4196 return -EIO;
4197 }
4198
4199 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4200 {
4201 __be32 *p;
4202
4203 p = xdr_inline_decode(xdr, len);
4204 if (likely(p)) {
4205 memcpy(buf, p, len);
4206 return 0;
4207 }
4208 print_overflow_msg(__func__, xdr);
4209 return -EIO;
4210 }
4211
4212 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4213 {
4214 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4215 }
4216
4217 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4218 {
4219 int status;
4220
4221 status = decode_op_hdr(xdr, OP_CLOSE);
4222 if (status != -EIO)
4223 nfs_increment_open_seqid(status, res->seqid);
4224 if (!status)
4225 status = decode_stateid(xdr, &res->stateid);
4226 return status;
4227 }
4228
4229 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4230 {
4231 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4232 }
4233
4234 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4235 {
4236 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4237 }
4238
4239 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4240 {
4241 int status;
4242
4243 status = decode_op_hdr(xdr, OP_COMMIT);
4244 if (!status)
4245 status = decode_write_verifier(xdr, &res->verf->verifier);
4246 return status;
4247 }
4248
4249 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4250 {
4251 __be32 *p;
4252 uint32_t bmlen;
4253 int status;
4254
4255 status = decode_op_hdr(xdr, OP_CREATE);
4256 if (status)
4257 return status;
4258 if ((status = decode_change_info(xdr, cinfo)))
4259 return status;
4260 p = xdr_inline_decode(xdr, 4);
4261 if (unlikely(!p))
4262 goto out_overflow;
4263 bmlen = be32_to_cpup(p);
4264 p = xdr_inline_decode(xdr, bmlen << 2);
4265 if (likely(p))
4266 return 0;
4267 out_overflow:
4268 print_overflow_msg(__func__, xdr);
4269 return -EIO;
4270 }
4271
4272 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4273 {
4274 unsigned int savep;
4275 uint32_t attrlen, bitmap[3] = {0};
4276 int status;
4277
4278 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4279 goto xdr_error;
4280 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4281 goto xdr_error;
4282 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4283 goto xdr_error;
4284 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4285 goto xdr_error;
4286 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4287 &res->fh_expire_type)) != 0)
4288 goto xdr_error;
4289 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4290 goto xdr_error;
4291 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4292 goto xdr_error;
4293 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4294 goto xdr_error;
4295 status = verify_attr_len(xdr, savep, attrlen);
4296 xdr_error:
4297 dprintk("%s: xdr returned %d!\n", __func__, -status);
4298 return status;
4299 }
4300
4301 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4302 {
4303 unsigned int savep;
4304 uint32_t attrlen, bitmap[3] = {0};
4305 int status;
4306
4307 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4308 goto xdr_error;
4309 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4310 goto xdr_error;
4311 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4312 goto xdr_error;
4313
4314 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4315 goto xdr_error;
4316 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4317 goto xdr_error;
4318 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4319 goto xdr_error;
4320 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4321 goto xdr_error;
4322 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4323 goto xdr_error;
4324 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4325 goto xdr_error;
4326
4327 status = verify_attr_len(xdr, savep, attrlen);
4328 xdr_error:
4329 dprintk("%s: xdr returned %d!\n", __func__, -status);
4330 return status;
4331 }
4332
4333 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4334 {
4335 unsigned int savep;
4336 uint32_t attrlen, bitmap[3] = {0};
4337 int status;
4338
4339 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4340 goto xdr_error;
4341 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4342 goto xdr_error;
4343 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4344 goto xdr_error;
4345
4346 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4347 goto xdr_error;
4348 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4349 goto xdr_error;
4350
4351 status = verify_attr_len(xdr, savep, attrlen);
4352 xdr_error:
4353 dprintk("%s: xdr returned %d!\n", __func__, -status);
4354 return status;
4355 }
4356
4357 static int decode_threshold_hint(struct xdr_stream *xdr,
4358 uint32_t *bitmap,
4359 uint64_t *res,
4360 uint32_t hint_bit)
4361 {
4362 __be32 *p;
4363
4364 *res = 0;
4365 if (likely(bitmap[0] & hint_bit)) {
4366 p = xdr_inline_decode(xdr, 8);
4367 if (unlikely(!p))
4368 goto out_overflow;
4369 xdr_decode_hyper(p, res);
4370 }
4371 return 0;
4372 out_overflow:
4373 print_overflow_msg(__func__, xdr);
4374 return -EIO;
4375 }
4376
4377 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4378 struct nfs4_threshold *res)
4379 {
4380 __be32 *p;
4381 unsigned int savep;
4382 uint32_t bitmap[3] = {0,}, attrlen;
4383 int status;
4384
4385 /* layout type */
4386 p = xdr_inline_decode(xdr, 4);
4387 if (unlikely(!p)) {
4388 print_overflow_msg(__func__, xdr);
4389 return -EIO;
4390 }
4391 res->l_type = be32_to_cpup(p);
4392
4393 /* thi_hintset bitmap */
4394 status = decode_attr_bitmap(xdr, bitmap);
4395 if (status < 0)
4396 goto xdr_error;
4397
4398 /* thi_hintlist length */
4399 status = decode_attr_length(xdr, &attrlen, &savep);
4400 if (status < 0)
4401 goto xdr_error;
4402 /* thi_hintlist */
4403 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4404 if (status < 0)
4405 goto xdr_error;
4406 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4407 if (status < 0)
4408 goto xdr_error;
4409 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4410 THRESHOLD_RD_IO);
4411 if (status < 0)
4412 goto xdr_error;
4413 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4414 THRESHOLD_WR_IO);
4415 if (status < 0)
4416 goto xdr_error;
4417
4418 status = verify_attr_len(xdr, savep, attrlen);
4419 res->bm = bitmap[0];
4420
4421 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4422 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4423 res->wr_io_sz);
4424 xdr_error:
4425 dprintk("%s ret=%d!\n", __func__, status);
4426 return status;
4427 }
4428
4429 /*
4430 * Thresholds on pNFS direct I/O vrs MDS I/O
4431 */
4432 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4433 uint32_t *bitmap,
4434 struct nfs4_threshold *res)
4435 {
4436 __be32 *p;
4437 int status = 0;
4438 uint32_t num;
4439
4440 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4441 return -EIO;
4442 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4443 /* Did the server return an unrequested attribute? */
4444 if (unlikely(res == NULL))
4445 return -EREMOTEIO;
4446 p = xdr_inline_decode(xdr, 4);
4447 if (unlikely(!p))
4448 goto out_overflow;
4449 num = be32_to_cpup(p);
4450 if (num == 0)
4451 return 0;
4452 if (num > 1)
4453 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4454 "drivers per filesystem not supported\n",
4455 __func__);
4456
4457 status = decode_first_threshold_item4(xdr, res);
4458 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4459 }
4460 return status;
4461 out_overflow:
4462 print_overflow_msg(__func__, xdr);
4463 return -EIO;
4464 }
4465
4466 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4467 struct nfs_fattr *fattr, struct nfs_fh *fh,
4468 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4469 const struct nfs_server *server)
4470 {
4471 int status;
4472 umode_t fmode = 0;
4473 uint32_t type;
4474 int32_t err;
4475
4476 status = decode_attr_type(xdr, bitmap, &type);
4477 if (status < 0)
4478 goto xdr_error;
4479 fattr->mode = 0;
4480 if (status != 0) {
4481 fattr->mode |= nfs_type2fmt[type];
4482 fattr->valid |= status;
4483 }
4484
4485 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4486 if (status < 0)
4487 goto xdr_error;
4488 fattr->valid |= status;
4489
4490 status = decode_attr_size(xdr, bitmap, &fattr->size);
4491 if (status < 0)
4492 goto xdr_error;
4493 fattr->valid |= status;
4494
4495 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4496 if (status < 0)
4497 goto xdr_error;
4498 fattr->valid |= status;
4499
4500 err = 0;
4501 status = decode_attr_error(xdr, bitmap, &err);
4502 if (status < 0)
4503 goto xdr_error;
4504
4505 status = decode_attr_filehandle(xdr, bitmap, fh);
4506 if (status < 0)
4507 goto xdr_error;
4508
4509 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4510 if (status < 0)
4511 goto xdr_error;
4512 fattr->valid |= status;
4513
4514 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4515 if (status < 0)
4516 goto xdr_error;
4517 fattr->valid |= status;
4518
4519 status = decode_attr_mode(xdr, bitmap, &fmode);
4520 if (status < 0)
4521 goto xdr_error;
4522 if (status != 0) {
4523 fattr->mode |= fmode;
4524 fattr->valid |= status;
4525 }
4526
4527 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4528 if (status < 0)
4529 goto xdr_error;
4530 fattr->valid |= status;
4531
4532 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4533 if (status < 0)
4534 goto xdr_error;
4535 fattr->valid |= status;
4536
4537 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4538 if (status < 0)
4539 goto xdr_error;
4540 fattr->valid |= status;
4541
4542 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4543 if (status < 0)
4544 goto xdr_error;
4545 fattr->valid |= status;
4546
4547 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4548 if (status < 0)
4549 goto xdr_error;
4550 fattr->valid |= status;
4551
4552 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4553 if (status < 0)
4554 goto xdr_error;
4555 fattr->valid |= status;
4556
4557 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4558 if (status < 0)
4559 goto xdr_error;
4560 fattr->valid |= status;
4561
4562 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4563 if (status < 0)
4564 goto xdr_error;
4565 fattr->valid |= status;
4566
4567 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4568 if (status < 0)
4569 goto xdr_error;
4570 fattr->valid |= status;
4571
4572 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4573 if (status < 0)
4574 goto xdr_error;
4575
4576 if (label) {
4577 status = decode_attr_security_label(xdr, bitmap, label);
4578 if (status < 0)
4579 goto xdr_error;
4580 fattr->valid |= status;
4581 }
4582
4583 xdr_error:
4584 dprintk("%s: xdr returned %d\n", __func__, -status);
4585 return status;
4586 }
4587
4588 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4589 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4590 struct nfs4_label *label, const struct nfs_server *server)
4591 {
4592 unsigned int savep;
4593 uint32_t attrlen,
4594 bitmap[3] = {0};
4595 int status;
4596
4597 status = decode_op_hdr(xdr, OP_GETATTR);
4598 if (status < 0)
4599 goto xdr_error;
4600
4601 status = decode_attr_bitmap(xdr, bitmap);
4602 if (status < 0)
4603 goto xdr_error;
4604
4605 status = decode_attr_length(xdr, &attrlen, &savep);
4606 if (status < 0)
4607 goto xdr_error;
4608
4609 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4610 label, server);
4611 if (status < 0)
4612 goto xdr_error;
4613
4614 status = verify_attr_len(xdr, savep, attrlen);
4615 xdr_error:
4616 dprintk("%s: xdr returned %d\n", __func__, -status);
4617 return status;
4618 }
4619
4620 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4621 struct nfs4_label *label, const struct nfs_server *server)
4622 {
4623 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4624 }
4625
4626 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4627 const struct nfs_server *server)
4628 {
4629 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4630 }
4631
4632 /*
4633 * Decode potentially multiple layout types. Currently we only support
4634 * one layout driver per file system.
4635 */
4636 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4637 uint32_t *layouttype)
4638 {
4639 uint32_t *p;
4640 int num;
4641
4642 p = xdr_inline_decode(xdr, 4);
4643 if (unlikely(!p))
4644 goto out_overflow;
4645 num = be32_to_cpup(p);
4646
4647 /* pNFS is not supported by the underlying file system */
4648 if (num == 0) {
4649 *layouttype = 0;
4650 return 0;
4651 }
4652 if (num > 1)
4653 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4654 "drivers per filesystem not supported\n", __func__);
4655
4656 /* Decode and set first layout type, move xdr->p past unused types */
4657 p = xdr_inline_decode(xdr, num * 4);
4658 if (unlikely(!p))
4659 goto out_overflow;
4660 *layouttype = be32_to_cpup(p);
4661 return 0;
4662 out_overflow:
4663 print_overflow_msg(__func__, xdr);
4664 return -EIO;
4665 }
4666
4667 /*
4668 * The type of file system exported.
4669 * Note we must ensure that layouttype is set in any non-error case.
4670 */
4671 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4672 uint32_t *layouttype)
4673 {
4674 int status = 0;
4675
4676 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4677 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4678 return -EIO;
4679 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4680 status = decode_first_pnfs_layout_type(xdr, layouttype);
4681 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4682 } else
4683 *layouttype = 0;
4684 return status;
4685 }
4686
4687 /*
4688 * The prefered block size for layout directed io
4689 */
4690 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4691 uint32_t *res)
4692 {
4693 __be32 *p;
4694
4695 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4696 *res = 0;
4697 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4698 p = xdr_inline_decode(xdr, 4);
4699 if (unlikely(!p)) {
4700 print_overflow_msg(__func__, xdr);
4701 return -EIO;
4702 }
4703 *res = be32_to_cpup(p);
4704 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4705 }
4706 return 0;
4707 }
4708
4709 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4710 {
4711 unsigned int savep;
4712 uint32_t attrlen, bitmap[3];
4713 int status;
4714
4715 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4716 goto xdr_error;
4717 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4718 goto xdr_error;
4719 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4720 goto xdr_error;
4721
4722 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4723
4724 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4725 goto xdr_error;
4726 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4727 goto xdr_error;
4728 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4729 goto xdr_error;
4730 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4731 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4732 goto xdr_error;
4733 fsinfo->wtpref = fsinfo->wtmax;
4734 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4735 if (status != 0)
4736 goto xdr_error;
4737 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4738 if (status != 0)
4739 goto xdr_error;
4740 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4741 if (status)
4742 goto xdr_error;
4743
4744 status = verify_attr_len(xdr, savep, attrlen);
4745 xdr_error:
4746 dprintk("%s: xdr returned %d!\n", __func__, -status);
4747 return status;
4748 }
4749
4750 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4751 {
4752 __be32 *p;
4753 uint32_t len;
4754 int status;
4755
4756 /* Zero handle first to allow comparisons */
4757 memset(fh, 0, sizeof(*fh));
4758
4759 status = decode_op_hdr(xdr, OP_GETFH);
4760 if (status)
4761 return status;
4762
4763 p = xdr_inline_decode(xdr, 4);
4764 if (unlikely(!p))
4765 goto out_overflow;
4766 len = be32_to_cpup(p);
4767 if (len > NFS4_FHSIZE)
4768 return -EIO;
4769 fh->size = len;
4770 p = xdr_inline_decode(xdr, len);
4771 if (unlikely(!p))
4772 goto out_overflow;
4773 memcpy(fh->data, p, len);
4774 return 0;
4775 out_overflow:
4776 print_overflow_msg(__func__, xdr);
4777 return -EIO;
4778 }
4779
4780 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4781 {
4782 int status;
4783
4784 status = decode_op_hdr(xdr, OP_LINK);
4785 if (status)
4786 return status;
4787 return decode_change_info(xdr, cinfo);
4788 }
4789
4790 /*
4791 * We create the owner, so we know a proper owner.id length is 4.
4792 */
4793 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4794 {
4795 uint64_t offset, length, clientid;
4796 __be32 *p;
4797 uint32_t namelen, type;
4798
4799 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4800 if (unlikely(!p))
4801 goto out_overflow;
4802 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4803 p = xdr_decode_hyper(p, &length);
4804 type = be32_to_cpup(p++); /* 4 byte read */
4805 if (fl != NULL) { /* manipulate file lock */
4806 fl->fl_start = (loff_t)offset;
4807 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4808 if (length == ~(uint64_t)0)
4809 fl->fl_end = OFFSET_MAX;
4810 fl->fl_type = F_WRLCK;
4811 if (type & 1)
4812 fl->fl_type = F_RDLCK;
4813 fl->fl_pid = 0;
4814 }
4815 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4816 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4817 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4818 if (likely(p))
4819 return -NFS4ERR_DENIED;
4820 out_overflow:
4821 print_overflow_msg(__func__, xdr);
4822 return -EIO;
4823 }
4824
4825 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4826 {
4827 int status;
4828
4829 status = decode_op_hdr(xdr, OP_LOCK);
4830 if (status == -EIO)
4831 goto out;
4832 if (status == 0) {
4833 status = decode_stateid(xdr, &res->stateid);
4834 if (unlikely(status))
4835 goto out;
4836 } else if (status == -NFS4ERR_DENIED)
4837 status = decode_lock_denied(xdr, NULL);
4838 if (res->open_seqid != NULL)
4839 nfs_increment_open_seqid(status, res->open_seqid);
4840 nfs_increment_lock_seqid(status, res->lock_seqid);
4841 out:
4842 return status;
4843 }
4844
4845 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4846 {
4847 int status;
4848 status = decode_op_hdr(xdr, OP_LOCKT);
4849 if (status == -NFS4ERR_DENIED)
4850 return decode_lock_denied(xdr, res->denied);
4851 return status;
4852 }
4853
4854 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4855 {
4856 int status;
4857
4858 status = decode_op_hdr(xdr, OP_LOCKU);
4859 if (status != -EIO)
4860 nfs_increment_lock_seqid(status, res->seqid);
4861 if (status == 0)
4862 status = decode_stateid(xdr, &res->stateid);
4863 return status;
4864 }
4865
4866 static int decode_release_lockowner(struct xdr_stream *xdr)
4867 {
4868 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4869 }
4870
4871 static int decode_lookup(struct xdr_stream *xdr)
4872 {
4873 return decode_op_hdr(xdr, OP_LOOKUP);
4874 }
4875
4876 /* This is too sick! */
4877 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4878 {
4879 __be32 *p;
4880 uint32_t limit_type, nblocks, blocksize;
4881
4882 p = xdr_inline_decode(xdr, 12);
4883 if (unlikely(!p))
4884 goto out_overflow;
4885 limit_type = be32_to_cpup(p++);
4886 switch (limit_type) {
4887 case 1:
4888 xdr_decode_hyper(p, maxsize);
4889 break;
4890 case 2:
4891 nblocks = be32_to_cpup(p++);
4892 blocksize = be32_to_cpup(p);
4893 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4894 }
4895 return 0;
4896 out_overflow:
4897 print_overflow_msg(__func__, xdr);
4898 return -EIO;
4899 }
4900
4901 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4902 {
4903 __be32 *p;
4904 uint32_t delegation_type;
4905 int status;
4906
4907 p = xdr_inline_decode(xdr, 4);
4908 if (unlikely(!p))
4909 goto out_overflow;
4910 delegation_type = be32_to_cpup(p);
4911 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4912 res->delegation_type = 0;
4913 return 0;
4914 }
4915 status = decode_stateid(xdr, &res->delegation);
4916 if (unlikely(status))
4917 return status;
4918 p = xdr_inline_decode(xdr, 4);
4919 if (unlikely(!p))
4920 goto out_overflow;
4921 res->do_recall = be32_to_cpup(p);
4922
4923 switch (delegation_type) {
4924 case NFS4_OPEN_DELEGATE_READ:
4925 res->delegation_type = FMODE_READ;
4926 break;
4927 case NFS4_OPEN_DELEGATE_WRITE:
4928 res->delegation_type = FMODE_WRITE|FMODE_READ;
4929 if (decode_space_limit(xdr, &res->maxsize) < 0)
4930 return -EIO;
4931 }
4932 return decode_ace(xdr, NULL, res->server->nfs_client);
4933 out_overflow:
4934 print_overflow_msg(__func__, xdr);
4935 return -EIO;
4936 }
4937
4938 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4939 {
4940 __be32 *p;
4941 uint32_t savewords, bmlen, i;
4942 int status;
4943
4944 status = decode_op_hdr(xdr, OP_OPEN);
4945 if (status != -EIO)
4946 nfs_increment_open_seqid(status, res->seqid);
4947 if (!status)
4948 status = decode_stateid(xdr, &res->stateid);
4949 if (unlikely(status))
4950 return status;
4951
4952 decode_change_info(xdr, &res->cinfo);
4953
4954 p = xdr_inline_decode(xdr, 8);
4955 if (unlikely(!p))
4956 goto out_overflow;
4957 res->rflags = be32_to_cpup(p++);
4958 bmlen = be32_to_cpup(p);
4959 if (bmlen > 10)
4960 goto xdr_error;
4961
4962 p = xdr_inline_decode(xdr, bmlen << 2);
4963 if (unlikely(!p))
4964 goto out_overflow;
4965 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4966 for (i = 0; i < savewords; ++i)
4967 res->attrset[i] = be32_to_cpup(p++);
4968 for (; i < NFS4_BITMAP_SIZE; i++)
4969 res->attrset[i] = 0;
4970
4971 return decode_delegation(xdr, res);
4972 xdr_error:
4973 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4974 return -EIO;
4975 out_overflow:
4976 print_overflow_msg(__func__, xdr);
4977 return -EIO;
4978 }
4979
4980 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4981 {
4982 int status;
4983
4984 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4985 if (status != -EIO)
4986 nfs_increment_open_seqid(status, res->seqid);
4987 if (!status)
4988 status = decode_stateid(xdr, &res->stateid);
4989 return status;
4990 }
4991
4992 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4993 {
4994 int status;
4995
4996 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4997 if (status != -EIO)
4998 nfs_increment_open_seqid(status, res->seqid);
4999 if (!status)
5000 status = decode_stateid(xdr, &res->stateid);
5001 return status;
5002 }
5003
5004 static int decode_putfh(struct xdr_stream *xdr)
5005 {
5006 return decode_op_hdr(xdr, OP_PUTFH);
5007 }
5008
5009 static int decode_putrootfh(struct xdr_stream *xdr)
5010 {
5011 return decode_op_hdr(xdr, OP_PUTROOTFH);
5012 }
5013
5014 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
5015 {
5016 __be32 *p;
5017 uint32_t count, eof, recvd;
5018 int status;
5019
5020 status = decode_op_hdr(xdr, OP_READ);
5021 if (status)
5022 return status;
5023 p = xdr_inline_decode(xdr, 8);
5024 if (unlikely(!p))
5025 goto out_overflow;
5026 eof = be32_to_cpup(p++);
5027 count = be32_to_cpup(p);
5028 recvd = xdr_read_pages(xdr, count);
5029 if (count > recvd) {
5030 dprintk("NFS: server cheating in read reply: "
5031 "count %u > recvd %u\n", count, recvd);
5032 count = recvd;
5033 eof = 0;
5034 }
5035 res->eof = eof;
5036 res->count = count;
5037 return 0;
5038 out_overflow:
5039 print_overflow_msg(__func__, xdr);
5040 return -EIO;
5041 }
5042
5043 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5044 {
5045 int status;
5046 __be32 verf[2];
5047
5048 status = decode_op_hdr(xdr, OP_READDIR);
5049 if (!status)
5050 status = decode_verifier(xdr, readdir->verifier.data);
5051 if (unlikely(status))
5052 return status;
5053 memcpy(verf, readdir->verifier.data, sizeof(verf));
5054 dprintk("%s: verifier = %08x:%08x\n",
5055 __func__, verf[0], verf[1]);
5056 return xdr_read_pages(xdr, xdr->buf->page_len);
5057 }
5058
5059 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5060 {
5061 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5062 u32 len, recvd;
5063 __be32 *p;
5064 int status;
5065
5066 status = decode_op_hdr(xdr, OP_READLINK);
5067 if (status)
5068 return status;
5069
5070 /* Convert length of symlink */
5071 p = xdr_inline_decode(xdr, 4);
5072 if (unlikely(!p))
5073 goto out_overflow;
5074 len = be32_to_cpup(p);
5075 if (len >= rcvbuf->page_len || len <= 0) {
5076 dprintk("nfs: server returned giant symlink!\n");
5077 return -ENAMETOOLONG;
5078 }
5079 recvd = xdr_read_pages(xdr, len);
5080 if (recvd < len) {
5081 dprintk("NFS: server cheating in readlink reply: "
5082 "count %u > recvd %u\n", len, recvd);
5083 return -EIO;
5084 }
5085 /*
5086 * The XDR encode routine has set things up so that
5087 * the link text will be copied directly into the
5088 * buffer. We just have to do overflow-checking,
5089 * and and null-terminate the text (the VFS expects
5090 * null-termination).
5091 */
5092 xdr_terminate_string(rcvbuf, len);
5093 return 0;
5094 out_overflow:
5095 print_overflow_msg(__func__, xdr);
5096 return -EIO;
5097 }
5098
5099 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5100 {
5101 int status;
5102
5103 status = decode_op_hdr(xdr, OP_REMOVE);
5104 if (status)
5105 goto out;
5106 status = decode_change_info(xdr, cinfo);
5107 out:
5108 return status;
5109 }
5110
5111 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5112 struct nfs4_change_info *new_cinfo)
5113 {
5114 int status;
5115
5116 status = decode_op_hdr(xdr, OP_RENAME);
5117 if (status)
5118 goto out;
5119 if ((status = decode_change_info(xdr, old_cinfo)))
5120 goto out;
5121 status = decode_change_info(xdr, new_cinfo);
5122 out:
5123 return status;
5124 }
5125
5126 static int decode_renew(struct xdr_stream *xdr)
5127 {
5128 return decode_op_hdr(xdr, OP_RENEW);
5129 }
5130
5131 static int
5132 decode_restorefh(struct xdr_stream *xdr)
5133 {
5134 return decode_op_hdr(xdr, OP_RESTOREFH);
5135 }
5136
5137 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5138 struct nfs_getaclres *res)
5139 {
5140 unsigned int savep;
5141 uint32_t attrlen,
5142 bitmap[3] = {0};
5143 int status;
5144 unsigned int pg_offset;
5145
5146 res->acl_len = 0;
5147 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5148 goto out;
5149
5150 xdr_enter_page(xdr, xdr->buf->page_len);
5151
5152 /* Calculate the offset of the page data */
5153 pg_offset = xdr->buf->head[0].iov_len;
5154
5155 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5156 goto out;
5157 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5158 goto out;
5159
5160 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5161 return -EIO;
5162 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5163
5164 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5165 * are stored with the acl data to handle the problem of
5166 * variable length bitmaps.*/
5167 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5168 res->acl_len = attrlen;
5169
5170 /* Check for receive buffer overflow */
5171 if (res->acl_len > (xdr->nwords << 2) ||
5172 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5173 res->acl_flags |= NFS4_ACL_TRUNC;
5174 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5175 attrlen, xdr->nwords << 2);
5176 }
5177 } else
5178 status = -EOPNOTSUPP;
5179
5180 out:
5181 return status;
5182 }
5183
5184 static int
5185 decode_savefh(struct xdr_stream *xdr)
5186 {
5187 return decode_op_hdr(xdr, OP_SAVEFH);
5188 }
5189
5190 static int decode_setattr(struct xdr_stream *xdr)
5191 {
5192 __be32 *p;
5193 uint32_t bmlen;
5194 int status;
5195
5196 status = decode_op_hdr(xdr, OP_SETATTR);
5197 if (status)
5198 return status;
5199 p = xdr_inline_decode(xdr, 4);
5200 if (unlikely(!p))
5201 goto out_overflow;
5202 bmlen = be32_to_cpup(p);
5203 p = xdr_inline_decode(xdr, bmlen << 2);
5204 if (likely(p))
5205 return 0;
5206 out_overflow:
5207 print_overflow_msg(__func__, xdr);
5208 return -EIO;
5209 }
5210
5211 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5212 {
5213 __be32 *p;
5214 uint32_t opnum;
5215 int32_t nfserr;
5216
5217 p = xdr_inline_decode(xdr, 8);
5218 if (unlikely(!p))
5219 goto out_overflow;
5220 opnum = be32_to_cpup(p++);
5221 if (opnum != OP_SETCLIENTID) {
5222 dprintk("nfs: decode_setclientid: Server returned operation"
5223 " %d\n", opnum);
5224 return -EIO;
5225 }
5226 nfserr = be32_to_cpup(p);
5227 if (nfserr == NFS_OK) {
5228 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5229 if (unlikely(!p))
5230 goto out_overflow;
5231 p = xdr_decode_hyper(p, &res->clientid);
5232 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5233 } else if (nfserr == NFSERR_CLID_INUSE) {
5234 uint32_t len;
5235
5236 /* skip netid string */
5237 p = xdr_inline_decode(xdr, 4);
5238 if (unlikely(!p))
5239 goto out_overflow;
5240 len = be32_to_cpup(p);
5241 p = xdr_inline_decode(xdr, len);
5242 if (unlikely(!p))
5243 goto out_overflow;
5244
5245 /* skip uaddr string */
5246 p = xdr_inline_decode(xdr, 4);
5247 if (unlikely(!p))
5248 goto out_overflow;
5249 len = be32_to_cpup(p);
5250 p = xdr_inline_decode(xdr, len);
5251 if (unlikely(!p))
5252 goto out_overflow;
5253 return -NFSERR_CLID_INUSE;
5254 } else
5255 return nfs4_stat_to_errno(nfserr);
5256
5257 return 0;
5258 out_overflow:
5259 print_overflow_msg(__func__, xdr);
5260 return -EIO;
5261 }
5262
5263 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5264 {
5265 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5266 }
5267
5268 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5269 {
5270 __be32 *p;
5271 int status;
5272
5273 status = decode_op_hdr(xdr, OP_WRITE);
5274 if (status)
5275 return status;
5276
5277 p = xdr_inline_decode(xdr, 8);
5278 if (unlikely(!p))
5279 goto out_overflow;
5280 res->count = be32_to_cpup(p++);
5281 res->verf->committed = be32_to_cpup(p++);
5282 return decode_write_verifier(xdr, &res->verf->verifier);
5283 out_overflow:
5284 print_overflow_msg(__func__, xdr);
5285 return -EIO;
5286 }
5287
5288 static int decode_delegreturn(struct xdr_stream *xdr)
5289 {
5290 return decode_op_hdr(xdr, OP_DELEGRETURN);
5291 }
5292
5293 static int decode_secinfo_gss(struct xdr_stream *xdr,
5294 struct nfs4_secinfo4 *flavor)
5295 {
5296 u32 oid_len;
5297 __be32 *p;
5298
5299 p = xdr_inline_decode(xdr, 4);
5300 if (unlikely(!p))
5301 goto out_overflow;
5302 oid_len = be32_to_cpup(p);
5303 if (oid_len > GSS_OID_MAX_LEN)
5304 goto out_err;
5305
5306 p = xdr_inline_decode(xdr, oid_len);
5307 if (unlikely(!p))
5308 goto out_overflow;
5309 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5310 flavor->flavor_info.oid.len = oid_len;
5311
5312 p = xdr_inline_decode(xdr, 8);
5313 if (unlikely(!p))
5314 goto out_overflow;
5315 flavor->flavor_info.qop = be32_to_cpup(p++);
5316 flavor->flavor_info.service = be32_to_cpup(p);
5317
5318 return 0;
5319
5320 out_overflow:
5321 print_overflow_msg(__func__, xdr);
5322 return -EIO;
5323 out_err:
5324 return -EINVAL;
5325 }
5326
5327 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5328 {
5329 struct nfs4_secinfo4 *sec_flavor;
5330 unsigned int i, num_flavors;
5331 int status;
5332 __be32 *p;
5333
5334 p = xdr_inline_decode(xdr, 4);
5335 if (unlikely(!p))
5336 goto out_overflow;
5337
5338 res->flavors->num_flavors = 0;
5339 num_flavors = be32_to_cpup(p);
5340
5341 for (i = 0; i < num_flavors; i++) {
5342 sec_flavor = &res->flavors->flavors[i];
5343 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5344 break;
5345
5346 p = xdr_inline_decode(xdr, 4);
5347 if (unlikely(!p))
5348 goto out_overflow;
5349 sec_flavor->flavor = be32_to_cpup(p);
5350
5351 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5352 status = decode_secinfo_gss(xdr, sec_flavor);
5353 if (status)
5354 goto out;
5355 }
5356 res->flavors->num_flavors++;
5357 }
5358
5359 status = 0;
5360 out:
5361 return status;
5362 out_overflow:
5363 print_overflow_msg(__func__, xdr);
5364 return -EIO;
5365 }
5366
5367 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5368 {
5369 int status = decode_op_hdr(xdr, OP_SECINFO);
5370 if (status)
5371 return status;
5372 return decode_secinfo_common(xdr, res);
5373 }
5374
5375 #if defined(CONFIG_NFS_V4_1)
5376 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5377 {
5378 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5379 if (status)
5380 return status;
5381 return decode_secinfo_common(xdr, res);
5382 }
5383
5384 static int decode_exchange_id(struct xdr_stream *xdr,
5385 struct nfs41_exchange_id_res *res)
5386 {
5387 __be32 *p;
5388 uint32_t dummy;
5389 char *dummy_str;
5390 int status;
5391 uint32_t impl_id_count;
5392
5393 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5394 if (status)
5395 return status;
5396
5397 p = xdr_inline_decode(xdr, 8);
5398 if (unlikely(!p))
5399 goto out_overflow;
5400 xdr_decode_hyper(p, &res->clientid);
5401 p = xdr_inline_decode(xdr, 12);
5402 if (unlikely(!p))
5403 goto out_overflow;
5404 res->seqid = be32_to_cpup(p++);
5405 res->flags = be32_to_cpup(p++);
5406
5407 /* We ask for SP4_NONE */
5408 dummy = be32_to_cpup(p);
5409 if (dummy != SP4_NONE)
5410 return -EIO;
5411
5412 /* server_owner4.so_minor_id */
5413 p = xdr_inline_decode(xdr, 8);
5414 if (unlikely(!p))
5415 goto out_overflow;
5416 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5417
5418 /* server_owner4.so_major_id */
5419 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5420 if (unlikely(status))
5421 return status;
5422 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5423 return -EIO;
5424 memcpy(res->server_owner->major_id, dummy_str, dummy);
5425 res->server_owner->major_id_sz = dummy;
5426
5427 /* server_scope4 */
5428 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5429 if (unlikely(status))
5430 return status;
5431 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5432 return -EIO;
5433 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5434 res->server_scope->server_scope_sz = dummy;
5435
5436 /* Implementation Id */
5437 p = xdr_inline_decode(xdr, 4);
5438 if (unlikely(!p))
5439 goto out_overflow;
5440 impl_id_count = be32_to_cpup(p++);
5441
5442 if (impl_id_count) {
5443 /* nii_domain */
5444 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5445 if (unlikely(status))
5446 return status;
5447 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5448 return -EIO;
5449 memcpy(res->impl_id->domain, dummy_str, dummy);
5450
5451 /* nii_name */
5452 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5453 if (unlikely(status))
5454 return status;
5455 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5456 return -EIO;
5457 memcpy(res->impl_id->name, dummy_str, dummy);
5458
5459 /* nii_date */
5460 p = xdr_inline_decode(xdr, 12);
5461 if (unlikely(!p))
5462 goto out_overflow;
5463 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5464 res->impl_id->date.nseconds = be32_to_cpup(p);
5465
5466 /* if there's more than one entry, ignore the rest */
5467 }
5468 return 0;
5469 out_overflow:
5470 print_overflow_msg(__func__, xdr);
5471 return -EIO;
5472 }
5473
5474 static int decode_chan_attrs(struct xdr_stream *xdr,
5475 struct nfs4_channel_attrs *attrs)
5476 {
5477 __be32 *p;
5478 u32 nr_attrs, val;
5479
5480 p = xdr_inline_decode(xdr, 28);
5481 if (unlikely(!p))
5482 goto out_overflow;
5483 val = be32_to_cpup(p++); /* headerpadsz */
5484 if (val)
5485 return -EINVAL; /* no support for header padding yet */
5486 attrs->max_rqst_sz = be32_to_cpup(p++);
5487 attrs->max_resp_sz = be32_to_cpup(p++);
5488 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5489 attrs->max_ops = be32_to_cpup(p++);
5490 attrs->max_reqs = be32_to_cpup(p++);
5491 nr_attrs = be32_to_cpup(p);
5492 if (unlikely(nr_attrs > 1)) {
5493 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5494 "count %u\n", __func__, nr_attrs);
5495 return -EINVAL;
5496 }
5497 if (nr_attrs == 1) {
5498 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5499 if (unlikely(!p))
5500 goto out_overflow;
5501 }
5502 return 0;
5503 out_overflow:
5504 print_overflow_msg(__func__, xdr);
5505 return -EIO;
5506 }
5507
5508 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5509 {
5510 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5511 }
5512
5513 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5514 struct nfs41_bind_conn_to_session_res *res)
5515 {
5516 __be32 *p;
5517 int status;
5518
5519 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5520 if (!status)
5521 status = decode_sessionid(xdr, &res->session->sess_id);
5522 if (unlikely(status))
5523 return status;
5524
5525 /* dir flags, rdma mode bool */
5526 p = xdr_inline_decode(xdr, 8);
5527 if (unlikely(!p))
5528 goto out_overflow;
5529
5530 res->dir = be32_to_cpup(p++);
5531 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5532 return -EIO;
5533 if (be32_to_cpup(p) == 0)
5534 res->use_conn_in_rdma_mode = false;
5535 else
5536 res->use_conn_in_rdma_mode = true;
5537
5538 return 0;
5539 out_overflow:
5540 print_overflow_msg(__func__, xdr);
5541 return -EIO;
5542 }
5543
5544 static int decode_create_session(struct xdr_stream *xdr,
5545 struct nfs41_create_session_res *res)
5546 {
5547 __be32 *p;
5548 int status;
5549 struct nfs_client *clp = res->client;
5550 struct nfs4_session *session = clp->cl_session;
5551
5552 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5553 if (!status)
5554 status = decode_sessionid(xdr, &session->sess_id);
5555 if (unlikely(status))
5556 return status;
5557
5558 /* seqid, flags */
5559 p = xdr_inline_decode(xdr, 8);
5560 if (unlikely(!p))
5561 goto out_overflow;
5562 clp->cl_seqid = be32_to_cpup(p++);
5563 session->flags = be32_to_cpup(p);
5564
5565 /* Channel attributes */
5566 status = decode_chan_attrs(xdr, &session->fc_attrs);
5567 if (!status)
5568 status = decode_chan_attrs(xdr, &session->bc_attrs);
5569 return status;
5570 out_overflow:
5571 print_overflow_msg(__func__, xdr);
5572 return -EIO;
5573 }
5574
5575 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5576 {
5577 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5578 }
5579
5580 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5581 {
5582 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5583 }
5584
5585 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5586 {
5587 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5588 }
5589 #endif /* CONFIG_NFS_V4_1 */
5590
5591 static int decode_sequence(struct xdr_stream *xdr,
5592 struct nfs4_sequence_res *res,
5593 struct rpc_rqst *rqstp)
5594 {
5595 #if defined(CONFIG_NFS_V4_1)
5596 struct nfs4_session *session;
5597 struct nfs4_sessionid id;
5598 u32 dummy;
5599 int status;
5600 __be32 *p;
5601
5602 if (res->sr_slot == NULL)
5603 return 0;
5604
5605 status = decode_op_hdr(xdr, OP_SEQUENCE);
5606 if (!status)
5607 status = decode_sessionid(xdr, &id);
5608 if (unlikely(status))
5609 goto out_err;
5610
5611 /*
5612 * If the server returns different values for sessionID, slotID or
5613 * sequence number, the server is looney tunes.
5614 */
5615 status = -EREMOTEIO;
5616 session = res->sr_slot->table->session;
5617
5618 if (memcmp(id.data, session->sess_id.data,
5619 NFS4_MAX_SESSIONID_LEN)) {
5620 dprintk("%s Invalid session id\n", __func__);
5621 goto out_err;
5622 }
5623
5624 p = xdr_inline_decode(xdr, 20);
5625 if (unlikely(!p))
5626 goto out_overflow;
5627
5628 /* seqid */
5629 dummy = be32_to_cpup(p++);
5630 if (dummy != res->sr_slot->seq_nr) {
5631 dprintk("%s Invalid sequence number\n", __func__);
5632 goto out_err;
5633 }
5634 /* slot id */
5635 dummy = be32_to_cpup(p++);
5636 if (dummy != res->sr_slot->slot_nr) {
5637 dprintk("%s Invalid slot id\n", __func__);
5638 goto out_err;
5639 }
5640 /* highest slot id */
5641 res->sr_highest_slotid = be32_to_cpup(p++);
5642 /* target highest slot id */
5643 res->sr_target_highest_slotid = be32_to_cpup(p++);
5644 /* result flags */
5645 res->sr_status_flags = be32_to_cpup(p);
5646 status = 0;
5647 out_err:
5648 res->sr_status = status;
5649 return status;
5650 out_overflow:
5651 print_overflow_msg(__func__, xdr);
5652 status = -EIO;
5653 goto out_err;
5654 #else /* CONFIG_NFS_V4_1 */
5655 return 0;
5656 #endif /* CONFIG_NFS_V4_1 */
5657 }
5658
5659 #if defined(CONFIG_NFS_V4_1)
5660 /*
5661 * TODO: Need to handle case when EOF != true;
5662 */
5663 static int decode_getdevicelist(struct xdr_stream *xdr,
5664 struct pnfs_devicelist *res)
5665 {
5666 __be32 *p;
5667 int status, i;
5668 nfs4_verifier verftemp;
5669
5670 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5671 if (status)
5672 return status;
5673
5674 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5675 if (unlikely(!p))
5676 goto out_overflow;
5677
5678 /* TODO: Skip cookie for now */
5679 p += 2;
5680
5681 /* Read verifier */
5682 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5683
5684 res->num_devs = be32_to_cpup(p);
5685
5686 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5687
5688 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5689 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5690 __func__, res->num_devs);
5691 return -EIO;
5692 }
5693
5694 p = xdr_inline_decode(xdr,
5695 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5696 if (unlikely(!p))
5697 goto out_overflow;
5698 for (i = 0; i < res->num_devs; i++)
5699 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5700 NFS4_DEVICEID4_SIZE);
5701 res->eof = be32_to_cpup(p);
5702 return 0;
5703 out_overflow:
5704 print_overflow_msg(__func__, xdr);
5705 return -EIO;
5706 }
5707
5708 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5709 struct pnfs_device *pdev)
5710 {
5711 __be32 *p;
5712 uint32_t len, type;
5713 int status;
5714
5715 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5716 if (status) {
5717 if (status == -ETOOSMALL) {
5718 p = xdr_inline_decode(xdr, 4);
5719 if (unlikely(!p))
5720 goto out_overflow;
5721 pdev->mincount = be32_to_cpup(p);
5722 dprintk("%s: Min count too small. mincnt = %u\n",
5723 __func__, pdev->mincount);
5724 }
5725 return status;
5726 }
5727
5728 p = xdr_inline_decode(xdr, 8);
5729 if (unlikely(!p))
5730 goto out_overflow;
5731 type = be32_to_cpup(p++);
5732 if (type != pdev->layout_type) {
5733 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5734 __func__, pdev->layout_type, type);
5735 return -EINVAL;
5736 }
5737 /*
5738 * Get the length of the opaque device_addr4. xdr_read_pages places
5739 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5740 * and places the remaining xdr data in xdr_buf->tail
5741 */
5742 pdev->mincount = be32_to_cpup(p);
5743 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5744 goto out_overflow;
5745
5746 /* Parse notification bitmap, verifying that it is zero. */
5747 p = xdr_inline_decode(xdr, 4);
5748 if (unlikely(!p))
5749 goto out_overflow;
5750 len = be32_to_cpup(p);
5751 if (len) {
5752 uint32_t i;
5753
5754 p = xdr_inline_decode(xdr, 4 * len);
5755 if (unlikely(!p))
5756 goto out_overflow;
5757 for (i = 0; i < len; i++, p++) {
5758 if (be32_to_cpup(p)) {
5759 dprintk("%s: notifications not supported\n",
5760 __func__);
5761 return -EIO;
5762 }
5763 }
5764 }
5765 return 0;
5766 out_overflow:
5767 print_overflow_msg(__func__, xdr);
5768 return -EIO;
5769 }
5770
5771 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5772 struct nfs4_layoutget_res *res)
5773 {
5774 __be32 *p;
5775 int status;
5776 u32 layout_count;
5777 u32 recvd;
5778
5779 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5780 if (status)
5781 return status;
5782 p = xdr_inline_decode(xdr, 4);
5783 if (unlikely(!p))
5784 goto out_overflow;
5785 res->return_on_close = be32_to_cpup(p);
5786 decode_stateid(xdr, &res->stateid);
5787 p = xdr_inline_decode(xdr, 4);
5788 if (unlikely(!p))
5789 goto out_overflow;
5790 layout_count = be32_to_cpup(p);
5791 if (!layout_count) {
5792 dprintk("%s: server responded with empty layout array\n",
5793 __func__);
5794 return -EINVAL;
5795 }
5796
5797 p = xdr_inline_decode(xdr, 28);
5798 if (unlikely(!p))
5799 goto out_overflow;
5800 p = xdr_decode_hyper(p, &res->range.offset);
5801 p = xdr_decode_hyper(p, &res->range.length);
5802 res->range.iomode = be32_to_cpup(p++);
5803 res->type = be32_to_cpup(p++);
5804 res->layoutp->len = be32_to_cpup(p);
5805
5806 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5807 __func__,
5808 (unsigned long)res->range.offset,
5809 (unsigned long)res->range.length,
5810 res->range.iomode,
5811 res->type,
5812 res->layoutp->len);
5813
5814 recvd = xdr_read_pages(xdr, res->layoutp->len);
5815 if (res->layoutp->len > recvd) {
5816 dprintk("NFS: server cheating in layoutget reply: "
5817 "layout len %u > recvd %u\n",
5818 res->layoutp->len, recvd);
5819 return -EINVAL;
5820 }
5821
5822 if (layout_count > 1) {
5823 /* We only handle a length one array at the moment. Any
5824 * further entries are just ignored. Note that this means
5825 * the client may see a response that is less than the
5826 * minimum it requested.
5827 */
5828 dprintk("%s: server responded with %d layouts, dropping tail\n",
5829 __func__, layout_count);
5830 }
5831
5832 return 0;
5833 out_overflow:
5834 print_overflow_msg(__func__, xdr);
5835 return -EIO;
5836 }
5837
5838 static int decode_layoutreturn(struct xdr_stream *xdr,
5839 struct nfs4_layoutreturn_res *res)
5840 {
5841 __be32 *p;
5842 int status;
5843
5844 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5845 if (status)
5846 return status;
5847 p = xdr_inline_decode(xdr, 4);
5848 if (unlikely(!p))
5849 goto out_overflow;
5850 res->lrs_present = be32_to_cpup(p);
5851 if (res->lrs_present)
5852 status = decode_stateid(xdr, &res->stateid);
5853 return status;
5854 out_overflow:
5855 print_overflow_msg(__func__, xdr);
5856 return -EIO;
5857 }
5858
5859 static int decode_layoutcommit(struct xdr_stream *xdr,
5860 struct rpc_rqst *req,
5861 struct nfs4_layoutcommit_res *res)
5862 {
5863 __be32 *p;
5864 __u32 sizechanged;
5865 int status;
5866
5867 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5868 res->status = status;
5869 if (status)
5870 return status;
5871
5872 p = xdr_inline_decode(xdr, 4);
5873 if (unlikely(!p))
5874 goto out_overflow;
5875 sizechanged = be32_to_cpup(p);
5876
5877 if (sizechanged) {
5878 /* throw away new size */
5879 p = xdr_inline_decode(xdr, 8);
5880 if (unlikely(!p))
5881 goto out_overflow;
5882 }
5883 return 0;
5884 out_overflow:
5885 print_overflow_msg(__func__, xdr);
5886 return -EIO;
5887 }
5888
5889 static int decode_test_stateid(struct xdr_stream *xdr,
5890 struct nfs41_test_stateid_res *res)
5891 {
5892 __be32 *p;
5893 int status;
5894 int num_res;
5895
5896 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5897 if (status)
5898 return status;
5899
5900 p = xdr_inline_decode(xdr, 4);
5901 if (unlikely(!p))
5902 goto out_overflow;
5903 num_res = be32_to_cpup(p++);
5904 if (num_res != 1)
5905 goto out;
5906
5907 p = xdr_inline_decode(xdr, 4);
5908 if (unlikely(!p))
5909 goto out_overflow;
5910 res->status = be32_to_cpup(p++);
5911
5912 return status;
5913 out_overflow:
5914 print_overflow_msg(__func__, xdr);
5915 out:
5916 return -EIO;
5917 }
5918
5919 static int decode_free_stateid(struct xdr_stream *xdr,
5920 struct nfs41_free_stateid_res *res)
5921 {
5922 __be32 *p;
5923 int status;
5924
5925 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5926 if (status)
5927 return status;
5928
5929 p = xdr_inline_decode(xdr, 4);
5930 if (unlikely(!p))
5931 goto out_overflow;
5932 res->status = be32_to_cpup(p++);
5933 return res->status;
5934 out_overflow:
5935 print_overflow_msg(__func__, xdr);
5936 return -EIO;
5937 }
5938 #endif /* CONFIG_NFS_V4_1 */
5939
5940 /*
5941 * END OF "GENERIC" DECODE ROUTINES.
5942 */
5943
5944 /*
5945 * Decode OPEN_DOWNGRADE response
5946 */
5947 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5948 struct xdr_stream *xdr,
5949 struct nfs_closeres *res)
5950 {
5951 struct compound_hdr hdr;
5952 int status;
5953
5954 status = decode_compound_hdr(xdr, &hdr);
5955 if (status)
5956 goto out;
5957 status = decode_sequence(xdr, &res->seq_res, rqstp);
5958 if (status)
5959 goto out;
5960 status = decode_putfh(xdr);
5961 if (status)
5962 goto out;
5963 status = decode_open_downgrade(xdr, res);
5964 if (status != 0)
5965 goto out;
5966 decode_getfattr(xdr, res->fattr, res->server);
5967 out:
5968 return status;
5969 }
5970
5971 /*
5972 * Decode ACCESS response
5973 */
5974 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5975 struct nfs4_accessres *res)
5976 {
5977 struct compound_hdr hdr;
5978 int status;
5979
5980 status = decode_compound_hdr(xdr, &hdr);
5981 if (status)
5982 goto out;
5983 status = decode_sequence(xdr, &res->seq_res, rqstp);
5984 if (status)
5985 goto out;
5986 status = decode_putfh(xdr);
5987 if (status != 0)
5988 goto out;
5989 status = decode_access(xdr, &res->supported, &res->access);
5990 if (status != 0)
5991 goto out;
5992 decode_getfattr(xdr, res->fattr, res->server);
5993 out:
5994 return status;
5995 }
5996
5997 /*
5998 * Decode LOOKUP response
5999 */
6000 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6001 struct nfs4_lookup_res *res)
6002 {
6003 struct compound_hdr hdr;
6004 int status;
6005
6006 status = decode_compound_hdr(xdr, &hdr);
6007 if (status)
6008 goto out;
6009 status = decode_sequence(xdr, &res->seq_res, rqstp);
6010 if (status)
6011 goto out;
6012 status = decode_putfh(xdr);
6013 if (status)
6014 goto out;
6015 status = decode_lookup(xdr);
6016 if (status)
6017 goto out;
6018 status = decode_getfh(xdr, res->fh);
6019 if (status)
6020 goto out;
6021 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6022 out:
6023 return status;
6024 }
6025
6026 /*
6027 * Decode LOOKUP_ROOT response
6028 */
6029 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6030 struct xdr_stream *xdr,
6031 struct nfs4_lookup_res *res)
6032 {
6033 struct compound_hdr hdr;
6034 int status;
6035
6036 status = decode_compound_hdr(xdr, &hdr);
6037 if (status)
6038 goto out;
6039 status = decode_sequence(xdr, &res->seq_res, rqstp);
6040 if (status)
6041 goto out;
6042 status = decode_putrootfh(xdr);
6043 if (status)
6044 goto out;
6045 status = decode_getfh(xdr, res->fh);
6046 if (status == 0)
6047 status = decode_getfattr_label(xdr, res->fattr,
6048 res->label, res->server);
6049 out:
6050 return status;
6051 }
6052
6053 /*
6054 * Decode REMOVE response
6055 */
6056 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6057 struct nfs_removeres *res)
6058 {
6059 struct compound_hdr hdr;
6060 int status;
6061
6062 status = decode_compound_hdr(xdr, &hdr);
6063 if (status)
6064 goto out;
6065 status = decode_sequence(xdr, &res->seq_res, rqstp);
6066 if (status)
6067 goto out;
6068 status = decode_putfh(xdr);
6069 if (status)
6070 goto out;
6071 status = decode_remove(xdr, &res->cinfo);
6072 out:
6073 return status;
6074 }
6075
6076 /*
6077 * Decode RENAME response
6078 */
6079 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6080 struct nfs_renameres *res)
6081 {
6082 struct compound_hdr hdr;
6083 int status;
6084
6085 status = decode_compound_hdr(xdr, &hdr);
6086 if (status)
6087 goto out;
6088 status = decode_sequence(xdr, &res->seq_res, rqstp);
6089 if (status)
6090 goto out;
6091 status = decode_putfh(xdr);
6092 if (status)
6093 goto out;
6094 status = decode_savefh(xdr);
6095 if (status)
6096 goto out;
6097 status = decode_putfh(xdr);
6098 if (status)
6099 goto out;
6100 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6101 out:
6102 return status;
6103 }
6104
6105 /*
6106 * Decode LINK response
6107 */
6108 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6109 struct nfs4_link_res *res)
6110 {
6111 struct compound_hdr hdr;
6112 int status;
6113
6114 status = decode_compound_hdr(xdr, &hdr);
6115 if (status)
6116 goto out;
6117 status = decode_sequence(xdr, &res->seq_res, rqstp);
6118 if (status)
6119 goto out;
6120 status = decode_putfh(xdr);
6121 if (status)
6122 goto out;
6123 status = decode_savefh(xdr);
6124 if (status)
6125 goto out;
6126 status = decode_putfh(xdr);
6127 if (status)
6128 goto out;
6129 status = decode_link(xdr, &res->cinfo);
6130 if (status)
6131 goto out;
6132 /*
6133 * Note order: OP_LINK leaves the directory as the current
6134 * filehandle.
6135 */
6136 status = decode_restorefh(xdr);
6137 if (status)
6138 goto out;
6139 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6140 out:
6141 return status;
6142 }
6143
6144 /*
6145 * Decode CREATE response
6146 */
6147 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6148 struct nfs4_create_res *res)
6149 {
6150 struct compound_hdr hdr;
6151 int status;
6152
6153 status = decode_compound_hdr(xdr, &hdr);
6154 if (status)
6155 goto out;
6156 status = decode_sequence(xdr, &res->seq_res, rqstp);
6157 if (status)
6158 goto out;
6159 status = decode_putfh(xdr);
6160 if (status)
6161 goto out;
6162 status = decode_create(xdr, &res->dir_cinfo);
6163 if (status)
6164 goto out;
6165 status = decode_getfh(xdr, res->fh);
6166 if (status)
6167 goto out;
6168 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6169 out:
6170 return status;
6171 }
6172
6173 /*
6174 * Decode SYMLINK response
6175 */
6176 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6177 struct nfs4_create_res *res)
6178 {
6179 return nfs4_xdr_dec_create(rqstp, xdr, res);
6180 }
6181
6182 /*
6183 * Decode GETATTR response
6184 */
6185 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6186 struct nfs4_getattr_res *res)
6187 {
6188 struct compound_hdr hdr;
6189 int status;
6190
6191 status = decode_compound_hdr(xdr, &hdr);
6192 if (status)
6193 goto out;
6194 status = decode_sequence(xdr, &res->seq_res, rqstp);
6195 if (status)
6196 goto out;
6197 status = decode_putfh(xdr);
6198 if (status)
6199 goto out;
6200 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6201 out:
6202 return status;
6203 }
6204
6205 /*
6206 * Encode an SETACL request
6207 */
6208 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6209 struct nfs_setaclargs *args)
6210 {
6211 struct compound_hdr hdr = {
6212 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6213 };
6214
6215 encode_compound_hdr(xdr, req, &hdr);
6216 encode_sequence(xdr, &args->seq_args, &hdr);
6217 encode_putfh(xdr, args->fh, &hdr);
6218 encode_setacl(xdr, args, &hdr);
6219 encode_nops(&hdr);
6220 }
6221
6222 /*
6223 * Decode SETACL response
6224 */
6225 static int
6226 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6227 struct nfs_setaclres *res)
6228 {
6229 struct compound_hdr hdr;
6230 int status;
6231
6232 status = decode_compound_hdr(xdr, &hdr);
6233 if (status)
6234 goto out;
6235 status = decode_sequence(xdr, &res->seq_res, rqstp);
6236 if (status)
6237 goto out;
6238 status = decode_putfh(xdr);
6239 if (status)
6240 goto out;
6241 status = decode_setattr(xdr);
6242 out:
6243 return status;
6244 }
6245
6246 /*
6247 * Decode GETACL response
6248 */
6249 static int
6250 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6251 struct nfs_getaclres *res)
6252 {
6253 struct compound_hdr hdr;
6254 int status;
6255
6256 if (res->acl_scratch != NULL) {
6257 void *p = page_address(res->acl_scratch);
6258 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6259 }
6260 status = decode_compound_hdr(xdr, &hdr);
6261 if (status)
6262 goto out;
6263 status = decode_sequence(xdr, &res->seq_res, rqstp);
6264 if (status)
6265 goto out;
6266 status = decode_putfh(xdr);
6267 if (status)
6268 goto out;
6269 status = decode_getacl(xdr, rqstp, res);
6270
6271 out:
6272 return status;
6273 }
6274
6275 /*
6276 * Decode CLOSE response
6277 */
6278 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6279 struct nfs_closeres *res)
6280 {
6281 struct compound_hdr hdr;
6282 int status;
6283
6284 status = decode_compound_hdr(xdr, &hdr);
6285 if (status)
6286 goto out;
6287 status = decode_sequence(xdr, &res->seq_res, rqstp);
6288 if (status)
6289 goto out;
6290 status = decode_putfh(xdr);
6291 if (status)
6292 goto out;
6293 status = decode_close(xdr, res);
6294 if (status != 0)
6295 goto out;
6296 /*
6297 * Note: Server may do delete on close for this file
6298 * in which case the getattr call will fail with
6299 * an ESTALE error. Shouldn't be a problem,
6300 * though, since fattr->valid will remain unset.
6301 */
6302 decode_getfattr(xdr, res->fattr, res->server);
6303 out:
6304 return status;
6305 }
6306
6307 /*
6308 * Decode OPEN response
6309 */
6310 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6311 struct nfs_openres *res)
6312 {
6313 struct compound_hdr hdr;
6314 int status;
6315
6316 status = decode_compound_hdr(xdr, &hdr);
6317 if (status)
6318 goto out;
6319 status = decode_sequence(xdr, &res->seq_res, rqstp);
6320 if (status)
6321 goto out;
6322 status = decode_putfh(xdr);
6323 if (status)
6324 goto out;
6325 status = decode_open(xdr, res);
6326 if (status)
6327 goto out;
6328 status = decode_getfh(xdr, &res->fh);
6329 if (status)
6330 goto out;
6331 if (res->access_request)
6332 decode_access(xdr, &res->access_supported, &res->access_result);
6333 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6334 out:
6335 return status;
6336 }
6337
6338 /*
6339 * Decode OPEN_CONFIRM response
6340 */
6341 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6342 struct xdr_stream *xdr,
6343 struct nfs_open_confirmres *res)
6344 {
6345 struct compound_hdr hdr;
6346 int status;
6347
6348 status = decode_compound_hdr(xdr, &hdr);
6349 if (status)
6350 goto out;
6351 status = decode_putfh(xdr);
6352 if (status)
6353 goto out;
6354 status = decode_open_confirm(xdr, res);
6355 out:
6356 return status;
6357 }
6358
6359 /*
6360 * Decode OPEN response
6361 */
6362 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6363 struct xdr_stream *xdr,
6364 struct nfs_openres *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_open(xdr, res);
6379 if (status)
6380 goto out;
6381 if (res->access_request)
6382 decode_access(xdr, &res->access_supported, &res->access_result);
6383 decode_getfattr(xdr, res->f_attr, res->server);
6384 out:
6385 return status;
6386 }
6387
6388 /*
6389 * Decode SETATTR response
6390 */
6391 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6392 struct xdr_stream *xdr,
6393 struct nfs_setattrres *res)
6394 {
6395 struct compound_hdr hdr;
6396 int status;
6397
6398 status = decode_compound_hdr(xdr, &hdr);
6399 if (status)
6400 goto out;
6401 status = decode_sequence(xdr, &res->seq_res, rqstp);
6402 if (status)
6403 goto out;
6404 status = decode_putfh(xdr);
6405 if (status)
6406 goto out;
6407 status = decode_setattr(xdr);
6408 if (status)
6409 goto out;
6410 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6411 out:
6412 return status;
6413 }
6414
6415 /*
6416 * Decode LOCK response
6417 */
6418 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6419 struct nfs_lock_res *res)
6420 {
6421 struct compound_hdr hdr;
6422 int status;
6423
6424 status = decode_compound_hdr(xdr, &hdr);
6425 if (status)
6426 goto out;
6427 status = decode_sequence(xdr, &res->seq_res, rqstp);
6428 if (status)
6429 goto out;
6430 status = decode_putfh(xdr);
6431 if (status)
6432 goto out;
6433 status = decode_lock(xdr, res);
6434 out:
6435 return status;
6436 }
6437
6438 /*
6439 * Decode LOCKT response
6440 */
6441 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6442 struct nfs_lockt_res *res)
6443 {
6444 struct compound_hdr hdr;
6445 int status;
6446
6447 status = decode_compound_hdr(xdr, &hdr);
6448 if (status)
6449 goto out;
6450 status = decode_sequence(xdr, &res->seq_res, rqstp);
6451 if (status)
6452 goto out;
6453 status = decode_putfh(xdr);
6454 if (status)
6455 goto out;
6456 status = decode_lockt(xdr, res);
6457 out:
6458 return status;
6459 }
6460
6461 /*
6462 * Decode LOCKU response
6463 */
6464 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6465 struct nfs_locku_res *res)
6466 {
6467 struct compound_hdr hdr;
6468 int status;
6469
6470 status = decode_compound_hdr(xdr, &hdr);
6471 if (status)
6472 goto out;
6473 status = decode_sequence(xdr, &res->seq_res, rqstp);
6474 if (status)
6475 goto out;
6476 status = decode_putfh(xdr);
6477 if (status)
6478 goto out;
6479 status = decode_locku(xdr, res);
6480 out:
6481 return status;
6482 }
6483
6484 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6485 struct xdr_stream *xdr, void *dummy)
6486 {
6487 struct compound_hdr hdr;
6488 int status;
6489
6490 status = decode_compound_hdr(xdr, &hdr);
6491 if (!status)
6492 status = decode_release_lockowner(xdr);
6493 return status;
6494 }
6495
6496 /*
6497 * Decode READLINK response
6498 */
6499 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6500 struct xdr_stream *xdr,
6501 struct nfs4_readlink_res *res)
6502 {
6503 struct compound_hdr hdr;
6504 int status;
6505
6506 status = decode_compound_hdr(xdr, &hdr);
6507 if (status)
6508 goto out;
6509 status = decode_sequence(xdr, &res->seq_res, rqstp);
6510 if (status)
6511 goto out;
6512 status = decode_putfh(xdr);
6513 if (status)
6514 goto out;
6515 status = decode_readlink(xdr, rqstp);
6516 out:
6517 return status;
6518 }
6519
6520 /*
6521 * Decode READDIR response
6522 */
6523 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6524 struct nfs4_readdir_res *res)
6525 {
6526 struct compound_hdr hdr;
6527 int status;
6528
6529 status = decode_compound_hdr(xdr, &hdr);
6530 if (status)
6531 goto out;
6532 status = decode_sequence(xdr, &res->seq_res, rqstp);
6533 if (status)
6534 goto out;
6535 status = decode_putfh(xdr);
6536 if (status)
6537 goto out;
6538 status = decode_readdir(xdr, rqstp, res);
6539 out:
6540 return status;
6541 }
6542
6543 /*
6544 * Decode Read response
6545 */
6546 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6547 struct nfs_readres *res)
6548 {
6549 struct compound_hdr hdr;
6550 int status;
6551
6552 status = decode_compound_hdr(xdr, &hdr);
6553 if (status)
6554 goto out;
6555 status = decode_sequence(xdr, &res->seq_res, rqstp);
6556 if (status)
6557 goto out;
6558 status = decode_putfh(xdr);
6559 if (status)
6560 goto out;
6561 status = decode_read(xdr, rqstp, res);
6562 if (!status)
6563 status = res->count;
6564 out:
6565 return status;
6566 }
6567
6568 /*
6569 * Decode WRITE response
6570 */
6571 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6572 struct nfs_writeres *res)
6573 {
6574 struct compound_hdr hdr;
6575 int status;
6576
6577 status = decode_compound_hdr(xdr, &hdr);
6578 if (status)
6579 goto out;
6580 status = decode_sequence(xdr, &res->seq_res, rqstp);
6581 if (status)
6582 goto out;
6583 status = decode_putfh(xdr);
6584 if (status)
6585 goto out;
6586 status = decode_write(xdr, res);
6587 if (status)
6588 goto out;
6589 if (res->fattr)
6590 decode_getfattr(xdr, res->fattr, res->server);
6591 if (!status)
6592 status = res->count;
6593 out:
6594 return status;
6595 }
6596
6597 /*
6598 * Decode COMMIT response
6599 */
6600 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6601 struct nfs_commitres *res)
6602 {
6603 struct compound_hdr hdr;
6604 int status;
6605
6606 status = decode_compound_hdr(xdr, &hdr);
6607 if (status)
6608 goto out;
6609 status = decode_sequence(xdr, &res->seq_res, rqstp);
6610 if (status)
6611 goto out;
6612 status = decode_putfh(xdr);
6613 if (status)
6614 goto out;
6615 status = decode_commit(xdr, res);
6616 out:
6617 return status;
6618 }
6619
6620 /*
6621 * Decode FSINFO response
6622 */
6623 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6624 struct nfs4_fsinfo_res *res)
6625 {
6626 struct compound_hdr hdr;
6627 int status;
6628
6629 status = decode_compound_hdr(xdr, &hdr);
6630 if (!status)
6631 status = decode_sequence(xdr, &res->seq_res, req);
6632 if (!status)
6633 status = decode_putfh(xdr);
6634 if (!status)
6635 status = decode_fsinfo(xdr, res->fsinfo);
6636 return status;
6637 }
6638
6639 /*
6640 * Decode PATHCONF response
6641 */
6642 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6643 struct nfs4_pathconf_res *res)
6644 {
6645 struct compound_hdr hdr;
6646 int status;
6647
6648 status = decode_compound_hdr(xdr, &hdr);
6649 if (!status)
6650 status = decode_sequence(xdr, &res->seq_res, req);
6651 if (!status)
6652 status = decode_putfh(xdr);
6653 if (!status)
6654 status = decode_pathconf(xdr, res->pathconf);
6655 return status;
6656 }
6657
6658 /*
6659 * Decode STATFS response
6660 */
6661 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6662 struct nfs4_statfs_res *res)
6663 {
6664 struct compound_hdr hdr;
6665 int status;
6666
6667 status = decode_compound_hdr(xdr, &hdr);
6668 if (!status)
6669 status = decode_sequence(xdr, &res->seq_res, req);
6670 if (!status)
6671 status = decode_putfh(xdr);
6672 if (!status)
6673 status = decode_statfs(xdr, res->fsstat);
6674 return status;
6675 }
6676
6677 /*
6678 * Decode GETATTR_BITMAP response
6679 */
6680 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6681 struct xdr_stream *xdr,
6682 struct nfs4_server_caps_res *res)
6683 {
6684 struct compound_hdr hdr;
6685 int status;
6686
6687 status = decode_compound_hdr(xdr, &hdr);
6688 if (status)
6689 goto out;
6690 status = decode_sequence(xdr, &res->seq_res, req);
6691 if (status)
6692 goto out;
6693 status = decode_putfh(xdr);
6694 if (status)
6695 goto out;
6696 status = decode_server_caps(xdr, res);
6697 out:
6698 return status;
6699 }
6700
6701 /*
6702 * Decode RENEW response
6703 */
6704 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6705 void *__unused)
6706 {
6707 struct compound_hdr hdr;
6708 int status;
6709
6710 status = decode_compound_hdr(xdr, &hdr);
6711 if (!status)
6712 status = decode_renew(xdr);
6713 return status;
6714 }
6715
6716 /*
6717 * Decode SETCLIENTID response
6718 */
6719 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6720 struct xdr_stream *xdr,
6721 struct nfs4_setclientid_res *res)
6722 {
6723 struct compound_hdr hdr;
6724 int status;
6725
6726 status = decode_compound_hdr(xdr, &hdr);
6727 if (!status)
6728 status = decode_setclientid(xdr, res);
6729 return status;
6730 }
6731
6732 /*
6733 * Decode SETCLIENTID_CONFIRM response
6734 */
6735 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6736 struct xdr_stream *xdr)
6737 {
6738 struct compound_hdr hdr;
6739 int status;
6740
6741 status = decode_compound_hdr(xdr, &hdr);
6742 if (!status)
6743 status = decode_setclientid_confirm(xdr);
6744 return status;
6745 }
6746
6747 /*
6748 * Decode DELEGRETURN response
6749 */
6750 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6751 struct xdr_stream *xdr,
6752 struct nfs4_delegreturnres *res)
6753 {
6754 struct compound_hdr hdr;
6755 int status;
6756
6757 status = decode_compound_hdr(xdr, &hdr);
6758 if (status)
6759 goto out;
6760 status = decode_sequence(xdr, &res->seq_res, rqstp);
6761 if (status)
6762 goto out;
6763 status = decode_putfh(xdr);
6764 if (status != 0)
6765 goto out;
6766 status = decode_getfattr(xdr, res->fattr, res->server);
6767 if (status != 0)
6768 goto out;
6769 status = decode_delegreturn(xdr);
6770 out:
6771 return status;
6772 }
6773
6774 /*
6775 * Decode FS_LOCATIONS response
6776 */
6777 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6778 struct xdr_stream *xdr,
6779 struct nfs4_fs_locations_res *res)
6780 {
6781 struct compound_hdr hdr;
6782 int status;
6783
6784 status = decode_compound_hdr(xdr, &hdr);
6785 if (status)
6786 goto out;
6787 status = decode_sequence(xdr, &res->seq_res, req);
6788 if (status)
6789 goto out;
6790 status = decode_putfh(xdr);
6791 if (status)
6792 goto out;
6793 status = decode_lookup(xdr);
6794 if (status)
6795 goto out;
6796 xdr_enter_page(xdr, PAGE_SIZE);
6797 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6798 NULL, res->fs_locations,
6799 NULL, res->fs_locations->server);
6800 out:
6801 return status;
6802 }
6803
6804 /*
6805 * Decode SECINFO response
6806 */
6807 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6808 struct xdr_stream *xdr,
6809 struct nfs4_secinfo_res *res)
6810 {
6811 struct compound_hdr hdr;
6812 int status;
6813
6814 status = decode_compound_hdr(xdr, &hdr);
6815 if (status)
6816 goto out;
6817 status = decode_sequence(xdr, &res->seq_res, rqstp);
6818 if (status)
6819 goto out;
6820 status = decode_putfh(xdr);
6821 if (status)
6822 goto out;
6823 status = decode_secinfo(xdr, res);
6824 out:
6825 return status;
6826 }
6827
6828 #if defined(CONFIG_NFS_V4_1)
6829 /*
6830 * Decode BIND_CONN_TO_SESSION response
6831 */
6832 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6833 struct xdr_stream *xdr,
6834 void *res)
6835 {
6836 struct compound_hdr hdr;
6837 int status;
6838
6839 status = decode_compound_hdr(xdr, &hdr);
6840 if (!status)
6841 status = decode_bind_conn_to_session(xdr, res);
6842 return status;
6843 }
6844
6845 /*
6846 * Decode EXCHANGE_ID response
6847 */
6848 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6849 struct xdr_stream *xdr,
6850 void *res)
6851 {
6852 struct compound_hdr hdr;
6853 int status;
6854
6855 status = decode_compound_hdr(xdr, &hdr);
6856 if (!status)
6857 status = decode_exchange_id(xdr, res);
6858 return status;
6859 }
6860
6861 /*
6862 * Decode CREATE_SESSION response
6863 */
6864 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6865 struct xdr_stream *xdr,
6866 struct nfs41_create_session_res *res)
6867 {
6868 struct compound_hdr hdr;
6869 int status;
6870
6871 status = decode_compound_hdr(xdr, &hdr);
6872 if (!status)
6873 status = decode_create_session(xdr, res);
6874 return status;
6875 }
6876
6877 /*
6878 * Decode DESTROY_SESSION response
6879 */
6880 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6881 struct xdr_stream *xdr,
6882 void *res)
6883 {
6884 struct compound_hdr hdr;
6885 int status;
6886
6887 status = decode_compound_hdr(xdr, &hdr);
6888 if (!status)
6889 status = decode_destroy_session(xdr, res);
6890 return status;
6891 }
6892
6893 /*
6894 * Decode DESTROY_CLIENTID response
6895 */
6896 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6897 struct xdr_stream *xdr,
6898 void *res)
6899 {
6900 struct compound_hdr hdr;
6901 int status;
6902
6903 status = decode_compound_hdr(xdr, &hdr);
6904 if (!status)
6905 status = decode_destroy_clientid(xdr, res);
6906 return status;
6907 }
6908
6909 /*
6910 * Decode SEQUENCE response
6911 */
6912 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6913 struct xdr_stream *xdr,
6914 struct nfs4_sequence_res *res)
6915 {
6916 struct compound_hdr hdr;
6917 int status;
6918
6919 status = decode_compound_hdr(xdr, &hdr);
6920 if (!status)
6921 status = decode_sequence(xdr, res, rqstp);
6922 return status;
6923 }
6924
6925 /*
6926 * Decode GET_LEASE_TIME response
6927 */
6928 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6929 struct xdr_stream *xdr,
6930 struct nfs4_get_lease_time_res *res)
6931 {
6932 struct compound_hdr hdr;
6933 int status;
6934
6935 status = decode_compound_hdr(xdr, &hdr);
6936 if (!status)
6937 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6938 if (!status)
6939 status = decode_putrootfh(xdr);
6940 if (!status)
6941 status = decode_fsinfo(xdr, res->lr_fsinfo);
6942 return status;
6943 }
6944
6945 /*
6946 * Decode RECLAIM_COMPLETE response
6947 */
6948 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6949 struct xdr_stream *xdr,
6950 struct nfs41_reclaim_complete_res *res)
6951 {
6952 struct compound_hdr hdr;
6953 int status;
6954
6955 status = decode_compound_hdr(xdr, &hdr);
6956 if (!status)
6957 status = decode_sequence(xdr, &res->seq_res, rqstp);
6958 if (!status)
6959 status = decode_reclaim_complete(xdr, (void *)NULL);
6960 return status;
6961 }
6962
6963 /*
6964 * Decode GETDEVICELIST response
6965 */
6966 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6967 struct xdr_stream *xdr,
6968 struct nfs4_getdevicelist_res *res)
6969 {
6970 struct compound_hdr hdr;
6971 int status;
6972
6973 dprintk("encoding getdevicelist!\n");
6974
6975 status = decode_compound_hdr(xdr, &hdr);
6976 if (status != 0)
6977 goto out;
6978 status = decode_sequence(xdr, &res->seq_res, rqstp);
6979 if (status != 0)
6980 goto out;
6981 status = decode_putfh(xdr);
6982 if (status != 0)
6983 goto out;
6984 status = decode_getdevicelist(xdr, res->devlist);
6985 out:
6986 return status;
6987 }
6988
6989 /*
6990 * Decode GETDEVINFO response
6991 */
6992 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6993 struct xdr_stream *xdr,
6994 struct nfs4_getdeviceinfo_res *res)
6995 {
6996 struct compound_hdr hdr;
6997 int status;
6998
6999 status = decode_compound_hdr(xdr, &hdr);
7000 if (status != 0)
7001 goto out;
7002 status = decode_sequence(xdr, &res->seq_res, rqstp);
7003 if (status != 0)
7004 goto out;
7005 status = decode_getdeviceinfo(xdr, res->pdev);
7006 out:
7007 return status;
7008 }
7009
7010 /*
7011 * Decode LAYOUTGET response
7012 */
7013 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7014 struct xdr_stream *xdr,
7015 struct nfs4_layoutget_res *res)
7016 {
7017 struct compound_hdr hdr;
7018 int status;
7019
7020 status = decode_compound_hdr(xdr, &hdr);
7021 if (status)
7022 goto out;
7023 status = decode_sequence(xdr, &res->seq_res, rqstp);
7024 if (status)
7025 goto out;
7026 status = decode_putfh(xdr);
7027 if (status)
7028 goto out;
7029 status = decode_layoutget(xdr, rqstp, res);
7030 out:
7031 return status;
7032 }
7033
7034 /*
7035 * Decode LAYOUTRETURN response
7036 */
7037 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7038 struct xdr_stream *xdr,
7039 struct nfs4_layoutreturn_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_putfh(xdr);
7051 if (status)
7052 goto out;
7053 status = decode_layoutreturn(xdr, res);
7054 out:
7055 return status;
7056 }
7057
7058 /*
7059 * Decode LAYOUTCOMMIT response
7060 */
7061 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7062 struct xdr_stream *xdr,
7063 struct nfs4_layoutcommit_res *res)
7064 {
7065 struct compound_hdr hdr;
7066 int status;
7067
7068 status = decode_compound_hdr(xdr, &hdr);
7069 if (status)
7070 goto out;
7071 status = decode_sequence(xdr, &res->seq_res, rqstp);
7072 if (status)
7073 goto out;
7074 status = decode_putfh(xdr);
7075 if (status)
7076 goto out;
7077 status = decode_layoutcommit(xdr, rqstp, res);
7078 if (status)
7079 goto out;
7080 decode_getfattr(xdr, res->fattr, res->server);
7081 out:
7082 return status;
7083 }
7084
7085 /*
7086 * Decode SECINFO_NO_NAME response
7087 */
7088 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7089 struct xdr_stream *xdr,
7090 struct nfs4_secinfo_res *res)
7091 {
7092 struct compound_hdr hdr;
7093 int status;
7094
7095 status = decode_compound_hdr(xdr, &hdr);
7096 if (status)
7097 goto out;
7098 status = decode_sequence(xdr, &res->seq_res, rqstp);
7099 if (status)
7100 goto out;
7101 status = decode_putrootfh(xdr);
7102 if (status)
7103 goto out;
7104 status = decode_secinfo_no_name(xdr, res);
7105 out:
7106 return status;
7107 }
7108
7109 /*
7110 * Decode TEST_STATEID response
7111 */
7112 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7113 struct xdr_stream *xdr,
7114 struct nfs41_test_stateid_res *res)
7115 {
7116 struct compound_hdr hdr;
7117 int status;
7118
7119 status = decode_compound_hdr(xdr, &hdr);
7120 if (status)
7121 goto out;
7122 status = decode_sequence(xdr, &res->seq_res, rqstp);
7123 if (status)
7124 goto out;
7125 status = decode_test_stateid(xdr, res);
7126 out:
7127 return status;
7128 }
7129
7130 /*
7131 * Decode FREE_STATEID response
7132 */
7133 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7134 struct xdr_stream *xdr,
7135 struct nfs41_free_stateid_res *res)
7136 {
7137 struct compound_hdr hdr;
7138 int status;
7139
7140 status = decode_compound_hdr(xdr, &hdr);
7141 if (status)
7142 goto out;
7143 status = decode_sequence(xdr, &res->seq_res, rqstp);
7144 if (status)
7145 goto out;
7146 status = decode_free_stateid(xdr, res);
7147 out:
7148 return status;
7149 }
7150 #endif /* CONFIG_NFS_V4_1 */
7151
7152 /**
7153 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7154 * the local page cache.
7155 * @xdr: XDR stream where entry resides
7156 * @entry: buffer to fill in with entry data
7157 * @plus: boolean indicating whether this should be a readdirplus entry
7158 *
7159 * Returns zero if successful, otherwise a negative errno value is
7160 * returned.
7161 *
7162 * This function is not invoked during READDIR reply decoding, but
7163 * rather whenever an application invokes the getdents(2) system call
7164 * on a directory already in our cache.
7165 */
7166 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7167 int plus)
7168 {
7169 unsigned int savep;
7170 uint32_t bitmap[3] = {0};
7171 uint32_t len;
7172 __be32 *p = xdr_inline_decode(xdr, 4);
7173 if (unlikely(!p))
7174 goto out_overflow;
7175 if (*p == xdr_zero) {
7176 p = xdr_inline_decode(xdr, 4);
7177 if (unlikely(!p))
7178 goto out_overflow;
7179 if (*p == xdr_zero)
7180 return -EAGAIN;
7181 entry->eof = 1;
7182 return -EBADCOOKIE;
7183 }
7184
7185 p = xdr_inline_decode(xdr, 12);
7186 if (unlikely(!p))
7187 goto out_overflow;
7188 entry->prev_cookie = entry->cookie;
7189 p = xdr_decode_hyper(p, &entry->cookie);
7190 entry->len = be32_to_cpup(p);
7191
7192 p = xdr_inline_decode(xdr, entry->len);
7193 if (unlikely(!p))
7194 goto out_overflow;
7195 entry->name = (const char *) p;
7196
7197 /*
7198 * In case the server doesn't return an inode number,
7199 * we fake one here. (We don't use inode number 0,
7200 * since glibc seems to choke on it...)
7201 */
7202 entry->ino = 1;
7203 entry->fattr->valid = 0;
7204
7205 if (decode_attr_bitmap(xdr, bitmap) < 0)
7206 goto out_overflow;
7207
7208 if (decode_attr_length(xdr, &len, &savep) < 0)
7209 goto out_overflow;
7210
7211 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7212 NULL, entry->label, entry->server) < 0)
7213 goto out_overflow;
7214 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7215 entry->ino = entry->fattr->mounted_on_fileid;
7216 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7217 entry->ino = entry->fattr->fileid;
7218
7219 entry->d_type = DT_UNKNOWN;
7220 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7221 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7222
7223 return 0;
7224
7225 out_overflow:
7226 print_overflow_msg(__func__, xdr);
7227 return -EAGAIN;
7228 }
7229
7230 /*
7231 * We need to translate between nfs status return values and
7232 * the local errno values which may not be the same.
7233 */
7234 static struct {
7235 int stat;
7236 int errno;
7237 } nfs_errtbl[] = {
7238 { NFS4_OK, 0 },
7239 { NFS4ERR_PERM, -EPERM },
7240 { NFS4ERR_NOENT, -ENOENT },
7241 { NFS4ERR_IO, -errno_NFSERR_IO},
7242 { NFS4ERR_NXIO, -ENXIO },
7243 { NFS4ERR_ACCESS, -EACCES },
7244 { NFS4ERR_EXIST, -EEXIST },
7245 { NFS4ERR_XDEV, -EXDEV },
7246 { NFS4ERR_NOTDIR, -ENOTDIR },
7247 { NFS4ERR_ISDIR, -EISDIR },
7248 { NFS4ERR_INVAL, -EINVAL },
7249 { NFS4ERR_FBIG, -EFBIG },
7250 { NFS4ERR_NOSPC, -ENOSPC },
7251 { NFS4ERR_ROFS, -EROFS },
7252 { NFS4ERR_MLINK, -EMLINK },
7253 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7254 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7255 { NFS4ERR_DQUOT, -EDQUOT },
7256 { NFS4ERR_STALE, -ESTALE },
7257 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7258 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7259 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7260 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7261 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7262 { NFS4ERR_BADTYPE, -EBADTYPE },
7263 { NFS4ERR_LOCKED, -EAGAIN },
7264 { NFS4ERR_SYMLINK, -ELOOP },
7265 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7266 { NFS4ERR_DEADLOCK, -EDEADLK },
7267 { -1, -EIO }
7268 };
7269
7270 /*
7271 * Convert an NFS error code to a local one.
7272 * This one is used jointly by NFSv2 and NFSv3.
7273 */
7274 static int
7275 nfs4_stat_to_errno(int stat)
7276 {
7277 int i;
7278 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7279 if (nfs_errtbl[i].stat == stat)
7280 return nfs_errtbl[i].errno;
7281 }
7282 if (stat <= 10000 || stat > 10100) {
7283 /* The server is looney tunes. */
7284 return -EREMOTEIO;
7285 }
7286 /* If we cannot translate the error, the recovery routines should
7287 * handle it.
7288 * Note: remaining NFSv4 error codes have values > 10000, so should
7289 * not conflict with native Linux error codes.
7290 */
7291 return -stat;
7292 }
7293
7294 #define PROC(proc, argtype, restype) \
7295 [NFSPROC4_CLNT_##proc] = { \
7296 .p_proc = NFSPROC4_COMPOUND, \
7297 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7298 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7299 .p_arglen = NFS4_##argtype##_sz, \
7300 .p_replen = NFS4_##restype##_sz, \
7301 .p_statidx = NFSPROC4_CLNT_##proc, \
7302 .p_name = #proc, \
7303 }
7304
7305 struct rpc_procinfo nfs4_procedures[] = {
7306 PROC(READ, enc_read, dec_read),
7307 PROC(WRITE, enc_write, dec_write),
7308 PROC(COMMIT, enc_commit, dec_commit),
7309 PROC(OPEN, enc_open, dec_open),
7310 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7311 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7312 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7313 PROC(CLOSE, enc_close, dec_close),
7314 PROC(SETATTR, enc_setattr, dec_setattr),
7315 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7316 PROC(RENEW, enc_renew, dec_renew),
7317 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7318 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7319 PROC(LOCK, enc_lock, dec_lock),
7320 PROC(LOCKT, enc_lockt, dec_lockt),
7321 PROC(LOCKU, enc_locku, dec_locku),
7322 PROC(ACCESS, enc_access, dec_access),
7323 PROC(GETATTR, enc_getattr, dec_getattr),
7324 PROC(LOOKUP, enc_lookup, dec_lookup),
7325 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7326 PROC(REMOVE, enc_remove, dec_remove),
7327 PROC(RENAME, enc_rename, dec_rename),
7328 PROC(LINK, enc_link, dec_link),
7329 PROC(SYMLINK, enc_symlink, dec_symlink),
7330 PROC(CREATE, enc_create, dec_create),
7331 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7332 PROC(STATFS, enc_statfs, dec_statfs),
7333 PROC(READLINK, enc_readlink, dec_readlink),
7334 PROC(READDIR, enc_readdir, dec_readdir),
7335 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7336 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7337 PROC(GETACL, enc_getacl, dec_getacl),
7338 PROC(SETACL, enc_setacl, dec_setacl),
7339 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7340 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7341 PROC(SECINFO, enc_secinfo, dec_secinfo),
7342 #if defined(CONFIG_NFS_V4_1)
7343 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7344 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7345 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7346 PROC(SEQUENCE, enc_sequence, dec_sequence),
7347 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7348 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7349 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7350 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7351 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7352 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7353 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7354 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7355 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7356 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7357 PROC(BIND_CONN_TO_SESSION,
7358 enc_bind_conn_to_session, dec_bind_conn_to_session),
7359 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7360 #endif /* CONFIG_NFS_V4_1 */
7361 };
7362
7363 const struct rpc_version nfs_version4 = {
7364 .number = 4,
7365 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7366 .procs = nfs4_procedures
7367 };
7368
7369 /*
7370 * Local variables:
7371 * c-basic-offset: 8
7372 * End:
7373 */
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