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ARM: rockchip: fix broken build
[linux/fpc-iii.git] / fs / nfs / nfs4xdr.c
blob558cd65dbdb752d111b5b85649b72bae36fdf040
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
56 #include "nfs4_fs.h"
57 #include "internal.h"
58 #include "nfs4idmap.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 #else
109 #define nfs4_label_maxsz 0
110 #endif
111 /* We support only one layout type per file system */
112 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
113 /* This is based on getfattr, which uses the most attributes: */
114 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
115 3 + 3 + 3 + nfs4_owner_maxsz + \
116 nfs4_group_maxsz + nfs4_label_maxsz + \
117 decode_mdsthreshold_maxsz))
118 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
119 nfs4_fattr_value_maxsz)
120 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
121 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
122 1 + 2 + 1 + \
123 nfs4_owner_maxsz + \
124 nfs4_group_maxsz + \
125 nfs4_label_maxsz + \
126 4 + 4)
127 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
128 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
129 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
130 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
131 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
132 /* The 5 accounts for the PNFS attributes, and assumes that at most three
133 * layout types will be returned.
134 */
135 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
136 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
137 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
138 #define decode_renew_maxsz (op_decode_hdr_maxsz)
139 #define encode_setclientid_maxsz \
140 (op_encode_hdr_maxsz + \
141 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
142 /* client name */ \
143 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
144 1 /* sc_prog */ + \
145 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
146 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
147 1) /* sc_cb_ident */
148 #define decode_setclientid_maxsz \
149 (op_decode_hdr_maxsz + \
150 2 /* clientid */ + \
151 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
152 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
153 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
154 #define encode_setclientid_confirm_maxsz \
155 (op_encode_hdr_maxsz + \
156 3 + (NFS4_VERIFIER_SIZE >> 2))
157 #define decode_setclientid_confirm_maxsz \
158 (op_decode_hdr_maxsz)
159 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
160 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
161 #define encode_share_access_maxsz \
162 (2)
163 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
164 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
165 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
166 #define encode_open_maxsz (op_encode_hdr_maxsz + \
167 2 + encode_share_access_maxsz + 2 + \
168 open_owner_id_maxsz + \
169 encode_opentype_maxsz + \
170 encode_claim_null_maxsz)
171 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
172 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
173 decode_ace_maxsz)
174 #define decode_change_info_maxsz (5)
175 #define decode_open_maxsz (op_decode_hdr_maxsz + \
176 decode_stateid_maxsz + \
177 decode_change_info_maxsz + 1 + \
178 nfs4_fattr_bitmap_maxsz + \
179 decode_delegation_maxsz)
180 #define encode_open_confirm_maxsz \
181 (op_encode_hdr_maxsz + \
182 encode_stateid_maxsz + 1)
183 #define decode_open_confirm_maxsz \
184 (op_decode_hdr_maxsz + \
185 decode_stateid_maxsz)
186 #define encode_open_downgrade_maxsz \
187 (op_encode_hdr_maxsz + \
188 encode_stateid_maxsz + 1 + \
189 encode_share_access_maxsz)
190 #define decode_open_downgrade_maxsz \
191 (op_decode_hdr_maxsz + \
192 decode_stateid_maxsz)
193 #define encode_close_maxsz (op_encode_hdr_maxsz + \
194 1 + encode_stateid_maxsz)
195 #define decode_close_maxsz (op_decode_hdr_maxsz + \
196 decode_stateid_maxsz)
197 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
198 encode_stateid_maxsz + \
199 encode_attrs_maxsz)
200 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
201 nfs4_fattr_bitmap_maxsz)
202 #define encode_read_maxsz (op_encode_hdr_maxsz + \
203 encode_stateid_maxsz + 3)
204 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
205 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
206 2 + encode_verifier_maxsz + 5 + \
207 nfs4_label_maxsz)
208 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
209 decode_verifier_maxsz)
210 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
211 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
212 #define encode_write_maxsz (op_encode_hdr_maxsz + \
213 encode_stateid_maxsz + 4)
214 #define decode_write_maxsz (op_decode_hdr_maxsz + \
215 2 + decode_verifier_maxsz)
216 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
217 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
218 decode_verifier_maxsz)
219 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
220 nfs4_name_maxsz)
221 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
222 decode_change_info_maxsz)
223 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
224 2 * nfs4_name_maxsz)
225 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
226 decode_change_info_maxsz + \
227 decode_change_info_maxsz)
228 #define encode_link_maxsz (op_encode_hdr_maxsz + \
229 nfs4_name_maxsz)
230 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
231 #define encode_lockowner_maxsz (7)
232 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
233 7 + \
234 1 + encode_stateid_maxsz + 1 + \
235 encode_lockowner_maxsz)
236 #define decode_lock_denied_maxsz \
237 (8 + decode_lockowner_maxsz)
238 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
239 decode_lock_denied_maxsz)
240 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
241 encode_lockowner_maxsz)
242 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
243 decode_lock_denied_maxsz)
244 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
245 encode_stateid_maxsz + \
246 4)
247 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
248 decode_stateid_maxsz)
249 #define encode_release_lockowner_maxsz \
250 (op_encode_hdr_maxsz + \
251 encode_lockowner_maxsz)
252 #define decode_release_lockowner_maxsz \
253 (op_decode_hdr_maxsz)
254 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
255 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
256 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
257 1 + nfs4_name_maxsz + \
258 1 + \
259 nfs4_fattr_maxsz)
260 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
261 #define encode_create_maxsz (op_encode_hdr_maxsz + \
262 1 + 2 + nfs4_name_maxsz + \
263 encode_attrs_maxsz)
264 #define decode_create_maxsz (op_decode_hdr_maxsz + \
265 decode_change_info_maxsz + \
266 nfs4_fattr_bitmap_maxsz)
267 #define encode_statfs_maxsz (encode_getattr_maxsz)
268 #define decode_statfs_maxsz (decode_getattr_maxsz)
269 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
270 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
271 #define encode_getacl_maxsz (encode_getattr_maxsz)
272 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
273 nfs4_fattr_bitmap_maxsz + 1)
274 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
275 encode_stateid_maxsz + 3)
276 #define decode_setacl_maxsz (decode_setattr_maxsz)
277 #define encode_fs_locations_maxsz \
278 (encode_getattr_maxsz)
279 #define decode_fs_locations_maxsz \
280 (0)
281 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
282 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
283
284 #if defined(CONFIG_NFS_V4_1)
285 #define NFS4_MAX_MACHINE_NAME_LEN (64)
286 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
287 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
288
289 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
290 encode_verifier_maxsz + \
291 1 /* co_ownerid.len */ + \
292 /* eia_clientowner */ \
293 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
294 1 /* flags */ + \
295 1 /* spa_how */ + \
296 /* max is SP4_MACH_CRED (for now) */ + \
297 1 + NFS4_OP_MAP_NUM_WORDS + \
298 1 + NFS4_OP_MAP_NUM_WORDS + \
299 1 /* implementation id array of size 1 */ + \
300 1 /* nii_domain */ + \
301 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
302 1 /* nii_name */ + \
303 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
304 3 /* nii_date */)
305 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
306 2 /* eir_clientid */ + \
307 1 /* eir_sequenceid */ + \
308 1 /* eir_flags */ + \
309 1 /* spr_how */ + \
310 /* max is SP4_MACH_CRED (for now) */ + \
311 1 + NFS4_OP_MAP_NUM_WORDS + \
312 1 + NFS4_OP_MAP_NUM_WORDS + \
313 2 /* eir_server_owner.so_minor_id */ + \
314 /* eir_server_owner.so_major_id<> */ \
315 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
316 /* eir_server_scope<> */ \
317 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
318 1 /* eir_server_impl_id array length */ + \
319 1 /* nii_domain */ + \
320 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
321 1 /* nii_name */ + \
322 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
323 3 /* nii_date */)
324 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
325 #define decode_channel_attrs_maxsz (6 + \
326 1 /* ca_rdma_ird.len */ + \
327 1 /* ca_rdma_ird */)
328 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
329 2 /* csa_clientid */ + \
330 1 /* csa_sequence */ + \
331 1 /* csa_flags */ + \
332 encode_channel_attrs_maxsz + \
333 encode_channel_attrs_maxsz + \
334 1 /* csa_cb_program */ + \
335 1 /* csa_sec_parms.len (1) */ + \
336 1 /* cb_secflavor (AUTH_SYS) */ + \
337 1 /* stamp */ + \
338 1 /* machinename.len */ + \
339 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
340 1 /* uid */ + \
341 1 /* gid */ + \
342 1 /* gids.len (0) */)
343 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
344 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
345 1 /* csr_sequence */ + \
346 1 /* csr_flags */ + \
347 decode_channel_attrs_maxsz + \
348 decode_channel_attrs_maxsz)
349 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
350 /* bctsa_sessid */ \
351 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
352 1 /* bctsa_dir */ + \
353 1 /* bctsa_use_conn_in_rdma_mode */)
354 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
355 /* bctsr_sessid */ \
356 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
357 1 /* bctsr_dir */ + \
358 1 /* bctsr_use_conn_in_rdma_mode */)
359 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
360 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
361 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
362 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
363 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
364 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
365 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
366 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
367 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
368 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
369 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
370 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
371 1 /* layout type */ + \
372 1 /* maxcount */ + \
373 1 /* bitmap size */ + \
374 1 /* notification bitmap length */ + \
375 1 /* notification bitmap, word 0 */)
376 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
377 1 /* layout type */ + \
378 1 /* opaque devaddr4 length */ + \
379 /* devaddr4 payload is read into page */ \
380 1 /* notification bitmap length */ + \
381 1 /* notification bitmap, word 0 */)
382 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
383 encode_stateid_maxsz)
384 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
385 decode_stateid_maxsz + \
386 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
387 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
388 2 /* offset */ + \
389 2 /* length */ + \
390 1 /* reclaim */ + \
391 encode_stateid_maxsz + \
392 1 /* new offset (true) */ + \
393 2 /* last byte written */ + \
394 1 /* nt_timechanged (false) */ + \
395 1 /* layoutupdate4 layout type */ + \
396 1 /* layoutupdate4 opaqueue len */)
397 /* the actual content of layoutupdate4 should
398 be allocated by drivers and spliced in
399 using xdr_write_pages */
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)
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 encode_renew_maxsz)
596 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
597 decode_sequence_maxsz + \
598 decode_putfh_maxsz + \
599 decode_getattr_maxsz + \
600 decode_renew_maxsz)
601 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
602 encode_sequence_maxsz + \
603 encode_putfh_maxsz + \
604 encode_lookup_maxsz + \
605 encode_getattr_maxsz + \
606 encode_getfh_maxsz)
607 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
608 decode_sequence_maxsz + \
609 decode_putfh_maxsz + \
610 decode_lookup_maxsz + \
611 decode_getattr_maxsz + \
612 decode_getfh_maxsz)
613 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
614 encode_sequence_maxsz + \
615 encode_putrootfh_maxsz + \
616 encode_getattr_maxsz + \
617 encode_getfh_maxsz)
618 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
619 decode_sequence_maxsz + \
620 decode_putrootfh_maxsz + \
621 decode_getattr_maxsz + \
622 decode_getfh_maxsz)
623 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
624 encode_sequence_maxsz + \
625 encode_putfh_maxsz + \
626 encode_remove_maxsz)
627 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
628 decode_sequence_maxsz + \
629 decode_putfh_maxsz + \
630 decode_remove_maxsz)
631 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
632 encode_sequence_maxsz + \
633 encode_putfh_maxsz + \
634 encode_savefh_maxsz + \
635 encode_putfh_maxsz + \
636 encode_rename_maxsz)
637 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
638 decode_sequence_maxsz + \
639 decode_putfh_maxsz + \
640 decode_savefh_maxsz + \
641 decode_putfh_maxsz + \
642 decode_rename_maxsz)
643 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
644 encode_sequence_maxsz + \
645 encode_putfh_maxsz + \
646 encode_savefh_maxsz + \
647 encode_putfh_maxsz + \
648 encode_link_maxsz + \
649 encode_restorefh_maxsz + \
650 encode_getattr_maxsz)
651 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
652 decode_sequence_maxsz + \
653 decode_putfh_maxsz + \
654 decode_savefh_maxsz + \
655 decode_putfh_maxsz + \
656 decode_link_maxsz + \
657 decode_restorefh_maxsz + \
658 decode_getattr_maxsz)
659 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
660 encode_sequence_maxsz + \
661 encode_putfh_maxsz + \
662 encode_symlink_maxsz + \
663 encode_getattr_maxsz + \
664 encode_getfh_maxsz)
665 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
666 decode_sequence_maxsz + \
667 decode_putfh_maxsz + \
668 decode_symlink_maxsz + \
669 decode_getattr_maxsz + \
670 decode_getfh_maxsz)
671 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
672 encode_sequence_maxsz + \
673 encode_putfh_maxsz + \
674 encode_create_maxsz + \
675 encode_getfh_maxsz + \
676 encode_getattr_maxsz)
677 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
678 decode_sequence_maxsz + \
679 decode_putfh_maxsz + \
680 decode_create_maxsz + \
681 decode_getfh_maxsz + \
682 decode_getattr_maxsz)
683 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
684 encode_sequence_maxsz + \
685 encode_putfh_maxsz + \
686 encode_getattr_maxsz)
687 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
688 decode_sequence_maxsz + \
689 decode_putfh_maxsz + \
690 decode_getattr_maxsz)
691 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
692 encode_sequence_maxsz + \
693 encode_putfh_maxsz + \
694 encode_statfs_maxsz)
695 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
696 decode_sequence_maxsz + \
697 decode_putfh_maxsz + \
698 decode_statfs_maxsz)
699 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
700 encode_sequence_maxsz + \
701 encode_putfh_maxsz + \
702 encode_getattr_maxsz)
703 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
704 decode_sequence_maxsz + \
705 decode_putfh_maxsz + \
706 decode_getattr_maxsz)
707 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
708 encode_sequence_maxsz + \
709 encode_putfh_maxsz + \
710 encode_delegreturn_maxsz + \
711 encode_getattr_maxsz)
712 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
713 decode_sequence_maxsz + \
714 decode_delegreturn_maxsz + \
715 decode_getattr_maxsz)
716 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
717 encode_sequence_maxsz + \
718 encode_putfh_maxsz + \
719 encode_getacl_maxsz)
720 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
721 decode_sequence_maxsz + \
722 decode_putfh_maxsz + \
723 decode_getacl_maxsz)
724 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
725 encode_sequence_maxsz + \
726 encode_putfh_maxsz + \
727 encode_setacl_maxsz)
728 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
729 decode_sequence_maxsz + \
730 decode_putfh_maxsz + \
731 decode_setacl_maxsz)
732 #define NFS4_enc_fs_locations_sz \
733 (compound_encode_hdr_maxsz + \
734 encode_sequence_maxsz + \
735 encode_putfh_maxsz + \
736 encode_lookup_maxsz + \
737 encode_fs_locations_maxsz + \
738 encode_renew_maxsz)
739 #define NFS4_dec_fs_locations_sz \
740 (compound_decode_hdr_maxsz + \
741 decode_sequence_maxsz + \
742 decode_putfh_maxsz + \
743 decode_lookup_maxsz + \
744 decode_fs_locations_maxsz + \
745 decode_renew_maxsz)
746 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
747 encode_sequence_maxsz + \
748 encode_putfh_maxsz + \
749 encode_secinfo_maxsz)
750 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
751 decode_sequence_maxsz + \
752 decode_putfh_maxsz + \
753 decode_secinfo_maxsz)
754 #define NFS4_enc_fsid_present_sz \
755 (compound_encode_hdr_maxsz + \
756 encode_sequence_maxsz + \
757 encode_putfh_maxsz + \
758 encode_getfh_maxsz + \
759 encode_renew_maxsz)
760 #define NFS4_dec_fsid_present_sz \
761 (compound_decode_hdr_maxsz + \
762 decode_sequence_maxsz + \
763 decode_putfh_maxsz + \
764 decode_getfh_maxsz + \
765 decode_renew_maxsz)
766 #if defined(CONFIG_NFS_V4_1)
767 #define NFS4_enc_bind_conn_to_session_sz \
768 (compound_encode_hdr_maxsz + \
769 encode_bind_conn_to_session_maxsz)
770 #define NFS4_dec_bind_conn_to_session_sz \
771 (compound_decode_hdr_maxsz + \
772 decode_bind_conn_to_session_maxsz)
773 #define NFS4_enc_exchange_id_sz \
774 (compound_encode_hdr_maxsz + \
775 encode_exchange_id_maxsz)
776 #define NFS4_dec_exchange_id_sz \
777 (compound_decode_hdr_maxsz + \
778 decode_exchange_id_maxsz)
779 #define NFS4_enc_create_session_sz \
780 (compound_encode_hdr_maxsz + \
781 encode_create_session_maxsz)
782 #define NFS4_dec_create_session_sz \
783 (compound_decode_hdr_maxsz + \
784 decode_create_session_maxsz)
785 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
786 encode_destroy_session_maxsz)
787 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
788 decode_destroy_session_maxsz)
789 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
790 encode_destroy_clientid_maxsz)
791 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
792 decode_destroy_clientid_maxsz)
793 #define NFS4_enc_sequence_sz \
794 (compound_decode_hdr_maxsz + \
795 encode_sequence_maxsz)
796 #define NFS4_dec_sequence_sz \
797 (compound_decode_hdr_maxsz + \
798 decode_sequence_maxsz)
799 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
800 encode_sequence_maxsz + \
801 encode_putrootfh_maxsz + \
802 encode_fsinfo_maxsz)
803 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
804 decode_sequence_maxsz + \
805 decode_putrootfh_maxsz + \
806 decode_fsinfo_maxsz)
807 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
808 encode_sequence_maxsz + \
809 encode_reclaim_complete_maxsz)
810 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
811 decode_sequence_maxsz + \
812 decode_reclaim_complete_maxsz)
813 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
814 encode_sequence_maxsz +\
815 encode_getdeviceinfo_maxsz)
816 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
817 decode_sequence_maxsz + \
818 decode_getdeviceinfo_maxsz)
819 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
820 encode_sequence_maxsz + \
821 encode_putfh_maxsz + \
822 encode_layoutget_maxsz)
823 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
824 decode_sequence_maxsz + \
825 decode_putfh_maxsz + \
826 decode_layoutget_maxsz)
827 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
828 encode_sequence_maxsz +\
829 encode_putfh_maxsz + \
830 encode_layoutcommit_maxsz + \
831 encode_getattr_maxsz)
832 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
833 decode_sequence_maxsz + \
834 decode_putfh_maxsz + \
835 decode_layoutcommit_maxsz + \
836 decode_getattr_maxsz)
837 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
838 encode_sequence_maxsz + \
839 encode_putfh_maxsz + \
840 encode_layoutreturn_maxsz)
841 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
842 decode_sequence_maxsz + \
843 decode_putfh_maxsz + \
844 decode_layoutreturn_maxsz)
845 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
846 encode_sequence_maxsz + \
847 encode_putrootfh_maxsz +\
848 encode_secinfo_no_name_maxsz)
849 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
850 decode_sequence_maxsz + \
851 decode_putrootfh_maxsz + \
852 decode_secinfo_no_name_maxsz)
853 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
854 encode_sequence_maxsz + \
855 encode_test_stateid_maxsz)
856 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
857 decode_sequence_maxsz + \
858 decode_test_stateid_maxsz)
859 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
860 encode_sequence_maxsz + \
861 encode_free_stateid_maxsz)
862 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
863 decode_sequence_maxsz + \
864 decode_free_stateid_maxsz)
865
866 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
867 compound_encode_hdr_maxsz +
868 encode_sequence_maxsz +
869 encode_putfh_maxsz +
870 encode_getattr_maxsz) *
871 XDR_UNIT);
872
873 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
874 compound_decode_hdr_maxsz +
875 decode_sequence_maxsz +
876 decode_putfh_maxsz) *
877 XDR_UNIT);
878
879 const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
880 compound_decode_hdr_maxsz +
881 decode_sequence_maxsz) *
882 XDR_UNIT);
883 EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
884 #endif /* CONFIG_NFS_V4_1 */
885
886 static const umode_t nfs_type2fmt[] = {
887 [NF4BAD] = 0,
888 [NF4REG] = S_IFREG,
889 [NF4DIR] = S_IFDIR,
890 [NF4BLK] = S_IFBLK,
891 [NF4CHR] = S_IFCHR,
892 [NF4LNK] = S_IFLNK,
893 [NF4SOCK] = S_IFSOCK,
894 [NF4FIFO] = S_IFIFO,
895 [NF4ATTRDIR] = 0,
896 [NF4NAMEDATTR] = 0,
897 };
898
899 struct compound_hdr {
900 int32_t status;
901 uint32_t nops;
902 __be32 * nops_p;
903 uint32_t taglen;
904 char * tag;
905 uint32_t replen; /* expected reply words */
906 u32 minorversion;
907 };
908
909 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
910 {
911 __be32 *p = xdr_reserve_space(xdr, nbytes);
912 BUG_ON(!p);
913 return p;
914 }
915
916 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
917 {
918 __be32 *p;
919
920 p = xdr_reserve_space(xdr, len);
921 xdr_encode_opaque_fixed(p, buf, len);
922 }
923
924 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
925 {
926 __be32 *p;
927
928 p = reserve_space(xdr, 4 + len);
929 xdr_encode_opaque(p, str, len);
930 }
931
932 static void encode_uint32(struct xdr_stream *xdr, u32 n)
933 {
934 __be32 *p;
935
936 p = reserve_space(xdr, 4);
937 *p = cpu_to_be32(n);
938 }
939
940 static void encode_uint64(struct xdr_stream *xdr, u64 n)
941 {
942 __be32 *p;
943
944 p = reserve_space(xdr, 8);
945 xdr_encode_hyper(p, n);
946 }
947
948 static void encode_nfs4_seqid(struct xdr_stream *xdr,
949 const struct nfs_seqid *seqid)
950 {
951 if (seqid != NULL)
952 encode_uint32(xdr, seqid->sequence->counter);
953 else
954 encode_uint32(xdr, 0);
955 }
956
957 static void encode_compound_hdr(struct xdr_stream *xdr,
958 struct rpc_rqst *req,
959 struct compound_hdr *hdr)
960 {
961 __be32 *p;
962 struct rpc_auth *auth = req->rq_cred->cr_auth;
963
964 /* initialize running count of expected bytes in reply.
965 * NOTE: the replied tag SHOULD be the same is the one sent,
966 * but this is not required as a MUST for the server to do so. */
967 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
968
969 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
970 encode_string(xdr, hdr->taglen, hdr->tag);
971 p = reserve_space(xdr, 8);
972 *p++ = cpu_to_be32(hdr->minorversion);
973 hdr->nops_p = p;
974 *p = cpu_to_be32(hdr->nops);
975 }
976
977 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
978 uint32_t replen,
979 struct compound_hdr *hdr)
980 {
981 encode_uint32(xdr, op);
982 hdr->nops++;
983 hdr->replen += replen;
984 }
985
986 static void encode_nops(struct compound_hdr *hdr)
987 {
988 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
989 *hdr->nops_p = htonl(hdr->nops);
990 }
991
992 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
993 {
994 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
995 }
996
997 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
998 {
999 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1000 }
1001
1002 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1003 const struct nfs4_label *label,
1004 const struct nfs_server *server)
1005 {
1006 char owner_name[IDMAP_NAMESZ];
1007 char owner_group[IDMAP_NAMESZ];
1008 int owner_namelen = 0;
1009 int owner_grouplen = 0;
1010 __be32 *p;
1011 unsigned i;
1012 uint32_t len = 0;
1013 uint32_t bmval_len;
1014 uint32_t bmval[3] = { 0 };
1015
1016 /*
1017 * We reserve enough space to write the entire attribute buffer at once.
1018 * In the worst-case, this would be
1019 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
1020 * = 40 bytes, plus any contribution from variable-length fields
1021 * such as owner/group.
1022 */
1023 if (iap->ia_valid & ATTR_SIZE) {
1024 bmval[0] |= FATTR4_WORD0_SIZE;
1025 len += 8;
1026 }
1027 if (iap->ia_valid & ATTR_MODE) {
1028 bmval[1] |= FATTR4_WORD1_MODE;
1029 len += 4;
1030 }
1031 if (iap->ia_valid & ATTR_UID) {
1032 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1033 if (owner_namelen < 0) {
1034 dprintk("nfs: couldn't resolve uid %d to string\n",
1035 from_kuid(&init_user_ns, iap->ia_uid));
1036 /* XXX */
1037 strcpy(owner_name, "nobody");
1038 owner_namelen = sizeof("nobody") - 1;
1039 /* goto out; */
1040 }
1041 bmval[1] |= FATTR4_WORD1_OWNER;
1042 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1043 }
1044 if (iap->ia_valid & ATTR_GID) {
1045 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1046 if (owner_grouplen < 0) {
1047 dprintk("nfs: couldn't resolve gid %d to string\n",
1048 from_kgid(&init_user_ns, iap->ia_gid));
1049 strcpy(owner_group, "nobody");
1050 owner_grouplen = sizeof("nobody") - 1;
1051 /* goto out; */
1052 }
1053 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1054 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1055 }
1056 if (iap->ia_valid & ATTR_ATIME_SET) {
1057 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1058 len += 16;
1059 } else if (iap->ia_valid & ATTR_ATIME) {
1060 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1061 len += 4;
1062 }
1063 if (iap->ia_valid & ATTR_MTIME_SET) {
1064 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1065 len += 16;
1066 } else if (iap->ia_valid & ATTR_MTIME) {
1067 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1068 len += 4;
1069 }
1070 if (label) {
1071 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1072 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1073 }
1074
1075 if (bmval[2] != 0)
1076 bmval_len = 3;
1077 else if (bmval[1] != 0)
1078 bmval_len = 2;
1079 else
1080 bmval_len = 1;
1081
1082 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
1083
1084 *p++ = cpu_to_be32(bmval_len);
1085 for (i = 0; i < bmval_len; i++)
1086 *p++ = cpu_to_be32(bmval[i]);
1087 *p++ = cpu_to_be32(len);
1088
1089 if (bmval[0] & FATTR4_WORD0_SIZE)
1090 p = xdr_encode_hyper(p, iap->ia_size);
1091 if (bmval[1] & FATTR4_WORD1_MODE)
1092 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1093 if (bmval[1] & FATTR4_WORD1_OWNER)
1094 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1095 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1096 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1097 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1098 if (iap->ia_valid & ATTR_ATIME_SET) {
1099 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1100 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1101 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1102 } else
1103 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1104 }
1105 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1106 if (iap->ia_valid & ATTR_MTIME_SET) {
1107 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1108 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1109 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1110 } else
1111 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1112 }
1113 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
1114 *p++ = cpu_to_be32(label->lfs);
1115 *p++ = cpu_to_be32(label->pi);
1116 *p++ = cpu_to_be32(label->len);
1117 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1118 }
1119
1120 /* out: */
1121 }
1122
1123 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1124 {
1125 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1126 encode_uint32(xdr, access);
1127 }
1128
1129 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1130 {
1131 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1132 encode_nfs4_seqid(xdr, arg->seqid);
1133 encode_nfs4_stateid(xdr, &arg->stateid);
1134 }
1135
1136 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1137 {
1138 __be32 *p;
1139
1140 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1141 p = reserve_space(xdr, 12);
1142 p = xdr_encode_hyper(p, args->offset);
1143 *p = cpu_to_be32(args->count);
1144 }
1145
1146 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1147 {
1148 __be32 *p;
1149
1150 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1151 encode_uint32(xdr, create->ftype);
1152
1153 switch (create->ftype) {
1154 case NF4LNK:
1155 p = reserve_space(xdr, 4);
1156 *p = cpu_to_be32(create->u.symlink.len);
1157 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1158 break;
1159
1160 case NF4BLK: case NF4CHR:
1161 p = reserve_space(xdr, 8);
1162 *p++ = cpu_to_be32(create->u.device.specdata1);
1163 *p = cpu_to_be32(create->u.device.specdata2);
1164 break;
1165
1166 default:
1167 break;
1168 }
1169
1170 encode_string(xdr, create->name->len, create->name->name);
1171 encode_attrs(xdr, create->attrs, create->label, create->server);
1172 }
1173
1174 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1175 {
1176 __be32 *p;
1177
1178 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1179 p = reserve_space(xdr, 8);
1180 *p++ = cpu_to_be32(1);
1181 *p = cpu_to_be32(bitmap);
1182 }
1183
1184 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1185 {
1186 __be32 *p;
1187
1188 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1189 p = reserve_space(xdr, 12);
1190 *p++ = cpu_to_be32(2);
1191 *p++ = cpu_to_be32(bm0);
1192 *p = cpu_to_be32(bm1);
1193 }
1194
1195 static void
1196 encode_getattr_three(struct xdr_stream *xdr,
1197 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1198 struct compound_hdr *hdr)
1199 {
1200 __be32 *p;
1201
1202 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1203 if (bm2) {
1204 p = reserve_space(xdr, 16);
1205 *p++ = cpu_to_be32(3);
1206 *p++ = cpu_to_be32(bm0);
1207 *p++ = cpu_to_be32(bm1);
1208 *p = cpu_to_be32(bm2);
1209 } else if (bm1) {
1210 p = reserve_space(xdr, 12);
1211 *p++ = cpu_to_be32(2);
1212 *p++ = cpu_to_be32(bm0);
1213 *p = cpu_to_be32(bm1);
1214 } else {
1215 p = reserve_space(xdr, 8);
1216 *p++ = cpu_to_be32(1);
1217 *p = cpu_to_be32(bm0);
1218 }
1219 }
1220
1221 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1222 {
1223 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1224 bitmask[1] & nfs4_fattr_bitmap[1],
1225 bitmask[2] & nfs4_fattr_bitmap[2],
1226 hdr);
1227 }
1228
1229 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1230 const u32 *open_bitmap,
1231 struct compound_hdr *hdr)
1232 {
1233 encode_getattr_three(xdr,
1234 bitmask[0] & open_bitmap[0],
1235 bitmask[1] & open_bitmap[1],
1236 bitmask[2] & open_bitmap[2],
1237 hdr);
1238 }
1239
1240 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1241 {
1242 encode_getattr_three(xdr,
1243 bitmask[0] & nfs4_fsinfo_bitmap[0],
1244 bitmask[1] & nfs4_fsinfo_bitmap[1],
1245 bitmask[2] & nfs4_fsinfo_bitmap[2],
1246 hdr);
1247 }
1248
1249 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1250 {
1251 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1252 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1253 }
1254
1255 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1256 {
1257 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1258 }
1259
1260 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1261 {
1262 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1263 encode_string(xdr, name->len, name->name);
1264 }
1265
1266 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1267 {
1268 if (fl->fl_type == F_RDLCK)
1269 return block ? NFS4_READW_LT : NFS4_READ_LT;
1270 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1271 }
1272
1273 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1274 {
1275 if (fl->fl_end == OFFSET_MAX)
1276 return ~(uint64_t)0;
1277 return fl->fl_end - fl->fl_start + 1;
1278 }
1279
1280 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1281 {
1282 __be32 *p;
1283
1284 p = reserve_space(xdr, 32);
1285 p = xdr_encode_hyper(p, lowner->clientid);
1286 *p++ = cpu_to_be32(20);
1287 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1288 *p++ = cpu_to_be32(lowner->s_dev);
1289 xdr_encode_hyper(p, lowner->id);
1290 }
1291
1292 /*
1293 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1294 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1295 */
1296 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1297 {
1298 __be32 *p;
1299
1300 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1301 p = reserve_space(xdr, 28);
1302 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1303 *p++ = cpu_to_be32(args->reclaim);
1304 p = xdr_encode_hyper(p, args->fl->fl_start);
1305 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1306 *p = cpu_to_be32(args->new_lock_owner);
1307 if (args->new_lock_owner){
1308 encode_nfs4_seqid(xdr, args->open_seqid);
1309 encode_nfs4_stateid(xdr, &args->open_stateid);
1310 encode_nfs4_seqid(xdr, args->lock_seqid);
1311 encode_lockowner(xdr, &args->lock_owner);
1312 }
1313 else {
1314 encode_nfs4_stateid(xdr, &args->lock_stateid);
1315 encode_nfs4_seqid(xdr, args->lock_seqid);
1316 }
1317 }
1318
1319 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1320 {
1321 __be32 *p;
1322
1323 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1324 p = reserve_space(xdr, 20);
1325 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1326 p = xdr_encode_hyper(p, args->fl->fl_start);
1327 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1328 encode_lockowner(xdr, &args->lock_owner);
1329 }
1330
1331 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1332 {
1333 __be32 *p;
1334
1335 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1336 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1337 encode_nfs4_seqid(xdr, args->seqid);
1338 encode_nfs4_stateid(xdr, &args->stateid);
1339 p = reserve_space(xdr, 16);
1340 p = xdr_encode_hyper(p, args->fl->fl_start);
1341 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1342 }
1343
1344 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1345 {
1346 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1347 encode_lockowner(xdr, lowner);
1348 }
1349
1350 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1351 {
1352 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1353 encode_string(xdr, name->len, name->name);
1354 }
1355
1356 static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1357 {
1358 __be32 *p;
1359
1360 p = reserve_space(xdr, 8);
1361 *p++ = cpu_to_be32(share_access);
1362 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1363 }
1364
1365 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1366 {
1367 __be32 *p;
1368 /*
1369 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1370 * owner 4 = 32
1371 */
1372 encode_nfs4_seqid(xdr, arg->seqid);
1373 encode_share_access(xdr, arg->share_access);
1374 p = reserve_space(xdr, 36);
1375 p = xdr_encode_hyper(p, arg->clientid);
1376 *p++ = cpu_to_be32(24);
1377 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1378 *p++ = cpu_to_be32(arg->server->s_dev);
1379 *p++ = cpu_to_be32(arg->id.uniquifier);
1380 xdr_encode_hyper(p, arg->id.create_time);
1381 }
1382
1383 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1384 {
1385 struct iattr dummy;
1386 __be32 *p;
1387
1388 p = reserve_space(xdr, 4);
1389 switch(arg->createmode) {
1390 case NFS4_CREATE_UNCHECKED:
1391 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1392 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1393 break;
1394 case NFS4_CREATE_GUARDED:
1395 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1396 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1397 break;
1398 case NFS4_CREATE_EXCLUSIVE:
1399 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1400 encode_nfs4_verifier(xdr, &arg->u.verifier);
1401 break;
1402 case NFS4_CREATE_EXCLUSIVE4_1:
1403 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1404 encode_nfs4_verifier(xdr, &arg->u.verifier);
1405 dummy.ia_valid = 0;
1406 encode_attrs(xdr, &dummy, arg->label, arg->server);
1407 }
1408 }
1409
1410 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1411 {
1412 __be32 *p;
1413
1414 p = reserve_space(xdr, 4);
1415 switch (arg->open_flags & O_CREAT) {
1416 case 0:
1417 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1418 break;
1419 default:
1420 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1421 encode_createmode(xdr, arg);
1422 }
1423 }
1424
1425 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1426 {
1427 __be32 *p;
1428
1429 p = reserve_space(xdr, 4);
1430 switch (delegation_type) {
1431 case 0:
1432 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1433 break;
1434 case FMODE_READ:
1435 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1436 break;
1437 case FMODE_WRITE|FMODE_READ:
1438 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1439 break;
1440 default:
1441 BUG();
1442 }
1443 }
1444
1445 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1446 {
1447 __be32 *p;
1448
1449 p = reserve_space(xdr, 4);
1450 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1451 encode_string(xdr, name->len, name->name);
1452 }
1453
1454 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1455 {
1456 __be32 *p;
1457
1458 p = reserve_space(xdr, 4);
1459 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1460 encode_delegation_type(xdr, type);
1461 }
1462
1463 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1464 {
1465 __be32 *p;
1466
1467 p = reserve_space(xdr, 4);
1468 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1469 encode_nfs4_stateid(xdr, stateid);
1470 encode_string(xdr, name->len, name->name);
1471 }
1472
1473 static inline void encode_claim_fh(struct xdr_stream *xdr)
1474 {
1475 __be32 *p;
1476
1477 p = reserve_space(xdr, 4);
1478 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1479 }
1480
1481 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1482 {
1483 __be32 *p;
1484
1485 p = reserve_space(xdr, 4);
1486 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1487 encode_nfs4_stateid(xdr, stateid);
1488 }
1489
1490 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1491 {
1492 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1493 encode_openhdr(xdr, arg);
1494 encode_opentype(xdr, arg);
1495 switch (arg->claim) {
1496 case NFS4_OPEN_CLAIM_NULL:
1497 encode_claim_null(xdr, arg->name);
1498 break;
1499 case NFS4_OPEN_CLAIM_PREVIOUS:
1500 encode_claim_previous(xdr, arg->u.delegation_type);
1501 break;
1502 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1503 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1504 break;
1505 case NFS4_OPEN_CLAIM_FH:
1506 encode_claim_fh(xdr);
1507 break;
1508 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1509 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1510 break;
1511 default:
1512 BUG();
1513 }
1514 }
1515
1516 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1517 {
1518 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1519 encode_nfs4_stateid(xdr, arg->stateid);
1520 encode_nfs4_seqid(xdr, arg->seqid);
1521 }
1522
1523 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1524 {
1525 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1526 encode_nfs4_stateid(xdr, &arg->stateid);
1527 encode_nfs4_seqid(xdr, arg->seqid);
1528 encode_share_access(xdr, arg->share_access);
1529 }
1530
1531 static void
1532 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1533 {
1534 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1535 encode_string(xdr, fh->size, fh->data);
1536 }
1537
1538 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1539 {
1540 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1541 }
1542
1543 static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1544 struct compound_hdr *hdr)
1545 {
1546 __be32 *p;
1547
1548 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1549 encode_nfs4_stateid(xdr, &args->stateid);
1550
1551 p = reserve_space(xdr, 12);
1552 p = xdr_encode_hyper(p, args->offset);
1553 *p = cpu_to_be32(args->count);
1554 }
1555
1556 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1557 {
1558 uint32_t attrs[3] = {
1559 FATTR4_WORD0_RDATTR_ERROR,
1560 FATTR4_WORD1_MOUNTED_ON_FILEID,
1561 };
1562 uint32_t dircount = readdir->count >> 1;
1563 __be32 *p, verf[2];
1564 uint32_t attrlen = 0;
1565 unsigned int i;
1566
1567 if (readdir->plus) {
1568 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1569 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1570 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1571 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1572 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1573 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1574 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1575 dircount >>= 1;
1576 }
1577 /* Use mounted_on_fileid only if the server supports it */
1578 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1579 attrs[0] |= FATTR4_WORD0_FILEID;
1580 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1581 attrs[i] &= readdir->bitmask[i];
1582 if (attrs[i] != 0)
1583 attrlen = i+1;
1584 }
1585
1586 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1587 encode_uint64(xdr, readdir->cookie);
1588 encode_nfs4_verifier(xdr, &readdir->verifier);
1589 p = reserve_space(xdr, 12 + (attrlen << 2));
1590 *p++ = cpu_to_be32(dircount);
1591 *p++ = cpu_to_be32(readdir->count);
1592 *p++ = cpu_to_be32(attrlen);
1593 for (i = 0; i < attrlen; i++)
1594 *p++ = cpu_to_be32(attrs[i]);
1595 memcpy(verf, readdir->verifier.data, sizeof(verf));
1596
1597 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1598 __func__,
1599 (unsigned long long)readdir->cookie,
1600 verf[0], verf[1],
1601 attrs[0] & readdir->bitmask[0],
1602 attrs[1] & readdir->bitmask[1],
1603 attrs[2] & readdir->bitmask[2]);
1604 }
1605
1606 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1607 {
1608 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1609 }
1610
1611 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1612 {
1613 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1614 encode_string(xdr, name->len, name->name);
1615 }
1616
1617 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1618 {
1619 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1620 encode_string(xdr, oldname->len, oldname->name);
1621 encode_string(xdr, newname->len, newname->name);
1622 }
1623
1624 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1625 struct compound_hdr *hdr)
1626 {
1627 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1628 encode_uint64(xdr, clid);
1629 }
1630
1631 static void
1632 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1633 {
1634 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1635 }
1636
1637 static void
1638 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1639 {
1640 __be32 *p;
1641
1642 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1643 encode_nfs4_stateid(xdr, &zero_stateid);
1644 p = reserve_space(xdr, 2*4);
1645 *p++ = cpu_to_be32(1);
1646 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1647 p = reserve_space(xdr, 4);
1648 *p = cpu_to_be32(arg->acl_len);
1649 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1650 }
1651
1652 static void
1653 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1654 {
1655 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1656 }
1657
1658 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1659 {
1660 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1661 encode_nfs4_stateid(xdr, &arg->stateid);
1662 encode_attrs(xdr, arg->iap, arg->label, server);
1663 }
1664
1665 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1666 {
1667 __be32 *p;
1668
1669 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1670 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1671
1672 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1673 setclientid->sc_clnt->cl_owner_id);
1674 p = reserve_space(xdr, 4);
1675 *p = cpu_to_be32(setclientid->sc_prog);
1676 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1677 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1678 p = reserve_space(xdr, 4);
1679 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1680 }
1681
1682 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1683 {
1684 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1685 decode_setclientid_confirm_maxsz, hdr);
1686 encode_uint64(xdr, arg->clientid);
1687 encode_nfs4_verifier(xdr, &arg->confirm);
1688 }
1689
1690 static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1691 struct compound_hdr *hdr)
1692 {
1693 __be32 *p;
1694
1695 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1696 encode_nfs4_stateid(xdr, &args->stateid);
1697
1698 p = reserve_space(xdr, 16);
1699 p = xdr_encode_hyper(p, args->offset);
1700 *p++ = cpu_to_be32(args->stable);
1701 *p = cpu_to_be32(args->count);
1702
1703 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1704 }
1705
1706 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1707 {
1708 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1709 encode_nfs4_stateid(xdr, stateid);
1710 }
1711
1712 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1713 {
1714 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1715 encode_string(xdr, name->len, name->name);
1716 }
1717
1718 #if defined(CONFIG_NFS_V4_1)
1719 /* NFSv4.1 operations */
1720 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1721 struct nfs41_bind_conn_to_session_args *args,
1722 struct compound_hdr *hdr)
1723 {
1724 __be32 *p;
1725
1726 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1727 decode_bind_conn_to_session_maxsz, hdr);
1728 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1729 p = xdr_reserve_space(xdr, 8);
1730 *p++ = cpu_to_be32(args->dir);
1731 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1732 }
1733
1734 static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
1735 {
1736 unsigned int i;
1737 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1738 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1739 encode_uint32(xdr, op_map->u.words[i]);
1740 }
1741
1742 static void encode_exchange_id(struct xdr_stream *xdr,
1743 struct nfs41_exchange_id_args *args,
1744 struct compound_hdr *hdr)
1745 {
1746 __be32 *p;
1747 char impl_name[IMPL_NAME_LIMIT];
1748 int len = 0;
1749
1750 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1751 encode_nfs4_verifier(xdr, args->verifier);
1752
1753 encode_string(xdr, strlen(args->client->cl_owner_id),
1754 args->client->cl_owner_id);
1755
1756 encode_uint32(xdr, args->flags);
1757 encode_uint32(xdr, args->state_protect.how);
1758
1759 switch (args->state_protect.how) {
1760 case SP4_NONE:
1761 break;
1762 case SP4_MACH_CRED:
1763 encode_op_map(xdr, &args->state_protect.enforce);
1764 encode_op_map(xdr, &args->state_protect.allow);
1765 break;
1766 default:
1767 WARN_ON_ONCE(1);
1768 break;
1769 }
1770
1771 if (send_implementation_id &&
1772 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1773 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1774 <= sizeof(impl_name) + 1)
1775 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1776 utsname()->sysname, utsname()->release,
1777 utsname()->version, utsname()->machine);
1778
1779 if (len > 0) {
1780 encode_uint32(xdr, 1); /* implementation id array length=1 */
1781
1782 encode_string(xdr,
1783 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1784 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1785 encode_string(xdr, len, impl_name);
1786 /* just send zeros for nii_date - the date is in nii_name */
1787 p = reserve_space(xdr, 12);
1788 p = xdr_encode_hyper(p, 0);
1789 *p = cpu_to_be32(0);
1790 } else
1791 encode_uint32(xdr, 0); /* implementation id array length=0 */
1792 }
1793
1794 static void encode_create_session(struct xdr_stream *xdr,
1795 struct nfs41_create_session_args *args,
1796 struct compound_hdr *hdr)
1797 {
1798 __be32 *p;
1799 struct nfs_client *clp = args->client;
1800 struct rpc_clnt *clnt = clp->cl_rpcclient;
1801 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1802 u32 max_resp_sz_cached;
1803
1804 /*
1805 * Assumes OPEN is the biggest non-idempotent compound.
1806 * 2 is the verifier.
1807 */
1808 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1809 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1810
1811 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1812 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1813 p = xdr_encode_hyper(p, args->clientid);
1814 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1815 *p++ = cpu_to_be32(args->flags); /*flags */
1816
1817 /* Fore Channel */
1818 *p++ = cpu_to_be32(0); /* header padding size */
1819 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1820 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1821 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1822 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1823 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1824 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1825
1826 /* Back Channel */
1827 *p++ = cpu_to_be32(0); /* header padding size */
1828 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1829 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1830 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1831 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1832 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1833 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1834
1835 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1836 *p++ = cpu_to_be32(1);
1837 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1838
1839 /* authsys_parms rfc1831 */
1840 *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */
1841 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1842 *p++ = cpu_to_be32(0); /* UID */
1843 *p++ = cpu_to_be32(0); /* GID */
1844 *p = cpu_to_be32(0); /* No more gids */
1845 }
1846
1847 static void encode_destroy_session(struct xdr_stream *xdr,
1848 struct nfs4_session *session,
1849 struct compound_hdr *hdr)
1850 {
1851 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1852 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1853 }
1854
1855 static void encode_destroy_clientid(struct xdr_stream *xdr,
1856 uint64_t clientid,
1857 struct compound_hdr *hdr)
1858 {
1859 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1860 encode_uint64(xdr, clientid);
1861 }
1862
1863 static void encode_reclaim_complete(struct xdr_stream *xdr,
1864 struct nfs41_reclaim_complete_args *args,
1865 struct compound_hdr *hdr)
1866 {
1867 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1868 encode_uint32(xdr, args->one_fs);
1869 }
1870 #endif /* CONFIG_NFS_V4_1 */
1871
1872 static void encode_sequence(struct xdr_stream *xdr,
1873 const struct nfs4_sequence_args *args,
1874 struct compound_hdr *hdr)
1875 {
1876 #if defined(CONFIG_NFS_V4_1)
1877 struct nfs4_session *session;
1878 struct nfs4_slot_table *tp;
1879 struct nfs4_slot *slot = args->sa_slot;
1880 __be32 *p;
1881
1882 tp = slot->table;
1883 session = tp->session;
1884 if (!session)
1885 return;
1886
1887 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1888
1889 /*
1890 * Sessionid + seqid + slotid + max slotid + cache_this
1891 */
1892 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1893 "max_slotid=%d cache_this=%d\n",
1894 __func__,
1895 ((u32 *)session->sess_id.data)[0],
1896 ((u32 *)session->sess_id.data)[1],
1897 ((u32 *)session->sess_id.data)[2],
1898 ((u32 *)session->sess_id.data)[3],
1899 slot->seq_nr, slot->slot_nr,
1900 tp->highest_used_slotid, args->sa_cache_this);
1901 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1902 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1903 *p++ = cpu_to_be32(slot->seq_nr);
1904 *p++ = cpu_to_be32(slot->slot_nr);
1905 *p++ = cpu_to_be32(tp->highest_used_slotid);
1906 *p = cpu_to_be32(args->sa_cache_this);
1907 #endif /* CONFIG_NFS_V4_1 */
1908 }
1909
1910 #ifdef CONFIG_NFS_V4_1
1911 static void
1912 encode_getdeviceinfo(struct xdr_stream *xdr,
1913 const struct nfs4_getdeviceinfo_args *args,
1914 struct compound_hdr *hdr)
1915 {
1916 __be32 *p;
1917
1918 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1919 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1920 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1921 NFS4_DEVICEID4_SIZE);
1922 *p++ = cpu_to_be32(args->pdev->layout_type);
1923 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1924
1925 p = reserve_space(xdr, 4 + 4);
1926 *p++ = cpu_to_be32(1); /* bitmap length */
1927 *p++ = cpu_to_be32(args->notify_types);
1928 }
1929
1930 static void
1931 encode_layoutget(struct xdr_stream *xdr,
1932 const struct nfs4_layoutget_args *args,
1933 struct compound_hdr *hdr)
1934 {
1935 __be32 *p;
1936
1937 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1938 p = reserve_space(xdr, 36);
1939 *p++ = cpu_to_be32(0); /* Signal layout available */
1940 *p++ = cpu_to_be32(args->type);
1941 *p++ = cpu_to_be32(args->range.iomode);
1942 p = xdr_encode_hyper(p, args->range.offset);
1943 p = xdr_encode_hyper(p, args->range.length);
1944 p = xdr_encode_hyper(p, args->minlength);
1945 encode_nfs4_stateid(xdr, &args->stateid);
1946 encode_uint32(xdr, args->maxcount);
1947
1948 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1949 __func__,
1950 args->type,
1951 args->range.iomode,
1952 (unsigned long)args->range.offset,
1953 (unsigned long)args->range.length,
1954 args->maxcount);
1955 }
1956
1957 static int
1958 encode_layoutcommit(struct xdr_stream *xdr,
1959 struct inode *inode,
1960 struct nfs4_layoutcommit_args *args,
1961 struct compound_hdr *hdr)
1962 {
1963 __be32 *p;
1964
1965 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1966 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1967
1968 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1969 p = reserve_space(xdr, 20);
1970 /* Only whole file layouts */
1971 p = xdr_encode_hyper(p, 0); /* offset */
1972 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1973 *p = cpu_to_be32(0); /* reclaim */
1974 encode_nfs4_stateid(xdr, &args->stateid);
1975 p = reserve_space(xdr, 20);
1976 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1977 p = xdr_encode_hyper(p, args->lastbytewritten);
1978 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1979 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1980
1981 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) {
1982 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1983 NFS_I(inode)->layout, xdr, args);
1984 } else {
1985 encode_uint32(xdr, args->layoutupdate_len);
1986 if (args->layoutupdate_pages) {
1987 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
1988 args->layoutupdate_len);
1989 }
1990 }
1991
1992 return 0;
1993 }
1994
1995 static void
1996 encode_layoutreturn(struct xdr_stream *xdr,
1997 const struct nfs4_layoutreturn_args *args,
1998 struct compound_hdr *hdr)
1999 {
2000 __be32 *p;
2001
2002 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2003 p = reserve_space(xdr, 16);
2004 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2005 *p++ = cpu_to_be32(args->layout_type);
2006 *p++ = cpu_to_be32(args->range.iomode);
2007 *p = cpu_to_be32(RETURN_FILE);
2008 p = reserve_space(xdr, 16);
2009 p = xdr_encode_hyper(p, args->range.offset);
2010 p = xdr_encode_hyper(p, args->range.length);
2011 spin_lock(&args->inode->i_lock);
2012 encode_nfs4_stateid(xdr, &args->stateid);
2013 spin_unlock(&args->inode->i_lock);
2014 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2015 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2016 NFS_I(args->inode)->layout, xdr, args);
2017 } else
2018 encode_uint32(xdr, 0);
2019 }
2020
2021 static int
2022 encode_secinfo_no_name(struct xdr_stream *xdr,
2023 const struct nfs41_secinfo_no_name_args *args,
2024 struct compound_hdr *hdr)
2025 {
2026 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2027 encode_uint32(xdr, args->style);
2028 return 0;
2029 }
2030
2031 static void encode_test_stateid(struct xdr_stream *xdr,
2032 struct nfs41_test_stateid_args *args,
2033 struct compound_hdr *hdr)
2034 {
2035 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2036 encode_uint32(xdr, 1);
2037 encode_nfs4_stateid(xdr, args->stateid);
2038 }
2039
2040 static void encode_free_stateid(struct xdr_stream *xdr,
2041 struct nfs41_free_stateid_args *args,
2042 struct compound_hdr *hdr)
2043 {
2044 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2045 encode_nfs4_stateid(xdr, &args->stateid);
2046 }
2047 #endif /* CONFIG_NFS_V4_1 */
2048
2049 /*
2050 * END OF "GENERIC" ENCODE ROUTINES.
2051 */
2052
2053 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2054 {
2055 #if defined(CONFIG_NFS_V4_1)
2056 struct nfs4_session *session = args->sa_slot->table->session;
2057 if (session)
2058 return session->clp->cl_mvops->minor_version;
2059 #endif /* CONFIG_NFS_V4_1 */
2060 return 0;
2061 }
2062
2063 /*
2064 * Encode an ACCESS request
2065 */
2066 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2067 const struct nfs4_accessargs *args)
2068 {
2069 struct compound_hdr hdr = {
2070 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2071 };
2072
2073 encode_compound_hdr(xdr, req, &hdr);
2074 encode_sequence(xdr, &args->seq_args, &hdr);
2075 encode_putfh(xdr, args->fh, &hdr);
2076 encode_access(xdr, args->access, &hdr);
2077 encode_getfattr(xdr, args->bitmask, &hdr);
2078 encode_nops(&hdr);
2079 }
2080
2081 /*
2082 * Encode LOOKUP request
2083 */
2084 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2085 const struct nfs4_lookup_arg *args)
2086 {
2087 struct compound_hdr hdr = {
2088 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2089 };
2090
2091 encode_compound_hdr(xdr, req, &hdr);
2092 encode_sequence(xdr, &args->seq_args, &hdr);
2093 encode_putfh(xdr, args->dir_fh, &hdr);
2094 encode_lookup(xdr, args->name, &hdr);
2095 encode_getfh(xdr, &hdr);
2096 encode_getfattr(xdr, args->bitmask, &hdr);
2097 encode_nops(&hdr);
2098 }
2099
2100 /*
2101 * Encode LOOKUP_ROOT request
2102 */
2103 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2104 struct xdr_stream *xdr,
2105 const struct nfs4_lookup_root_arg *args)
2106 {
2107 struct compound_hdr hdr = {
2108 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2109 };
2110
2111 encode_compound_hdr(xdr, req, &hdr);
2112 encode_sequence(xdr, &args->seq_args, &hdr);
2113 encode_putrootfh(xdr, &hdr);
2114 encode_getfh(xdr, &hdr);
2115 encode_getfattr(xdr, args->bitmask, &hdr);
2116 encode_nops(&hdr);
2117 }
2118
2119 /*
2120 * Encode REMOVE request
2121 */
2122 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2123 const struct nfs_removeargs *args)
2124 {
2125 struct compound_hdr hdr = {
2126 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2127 };
2128
2129 encode_compound_hdr(xdr, req, &hdr);
2130 encode_sequence(xdr, &args->seq_args, &hdr);
2131 encode_putfh(xdr, args->fh, &hdr);
2132 encode_remove(xdr, &args->name, &hdr);
2133 encode_nops(&hdr);
2134 }
2135
2136 /*
2137 * Encode RENAME request
2138 */
2139 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2140 const struct nfs_renameargs *args)
2141 {
2142 struct compound_hdr hdr = {
2143 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2144 };
2145
2146 encode_compound_hdr(xdr, req, &hdr);
2147 encode_sequence(xdr, &args->seq_args, &hdr);
2148 encode_putfh(xdr, args->old_dir, &hdr);
2149 encode_savefh(xdr, &hdr);
2150 encode_putfh(xdr, args->new_dir, &hdr);
2151 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2152 encode_nops(&hdr);
2153 }
2154
2155 /*
2156 * Encode LINK request
2157 */
2158 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2159 const struct nfs4_link_arg *args)
2160 {
2161 struct compound_hdr hdr = {
2162 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2163 };
2164
2165 encode_compound_hdr(xdr, req, &hdr);
2166 encode_sequence(xdr, &args->seq_args, &hdr);
2167 encode_putfh(xdr, args->fh, &hdr);
2168 encode_savefh(xdr, &hdr);
2169 encode_putfh(xdr, args->dir_fh, &hdr);
2170 encode_link(xdr, args->name, &hdr);
2171 encode_restorefh(xdr, &hdr);
2172 encode_getfattr(xdr, args->bitmask, &hdr);
2173 encode_nops(&hdr);
2174 }
2175
2176 /*
2177 * Encode CREATE request
2178 */
2179 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2180 const struct nfs4_create_arg *args)
2181 {
2182 struct compound_hdr hdr = {
2183 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2184 };
2185
2186 encode_compound_hdr(xdr, req, &hdr);
2187 encode_sequence(xdr, &args->seq_args, &hdr);
2188 encode_putfh(xdr, args->dir_fh, &hdr);
2189 encode_create(xdr, args, &hdr);
2190 encode_getfh(xdr, &hdr);
2191 encode_getfattr(xdr, args->bitmask, &hdr);
2192 encode_nops(&hdr);
2193 }
2194
2195 /*
2196 * Encode SYMLINK request
2197 */
2198 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2199 const struct nfs4_create_arg *args)
2200 {
2201 nfs4_xdr_enc_create(req, xdr, args);
2202 }
2203
2204 /*
2205 * Encode GETATTR request
2206 */
2207 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2208 const struct nfs4_getattr_arg *args)
2209 {
2210 struct compound_hdr hdr = {
2211 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2212 };
2213
2214 encode_compound_hdr(xdr, req, &hdr);
2215 encode_sequence(xdr, &args->seq_args, &hdr);
2216 encode_putfh(xdr, args->fh, &hdr);
2217 encode_getfattr(xdr, args->bitmask, &hdr);
2218 encode_nops(&hdr);
2219 }
2220
2221 /*
2222 * Encode a CLOSE request
2223 */
2224 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2225 struct nfs_closeargs *args)
2226 {
2227 struct compound_hdr hdr = {
2228 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2229 };
2230
2231 encode_compound_hdr(xdr, req, &hdr);
2232 encode_sequence(xdr, &args->seq_args, &hdr);
2233 encode_putfh(xdr, args->fh, &hdr);
2234 encode_close(xdr, args, &hdr);
2235 encode_getfattr(xdr, args->bitmask, &hdr);
2236 encode_nops(&hdr);
2237 }
2238
2239 /*
2240 * Encode an OPEN request
2241 */
2242 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2243 struct nfs_openargs *args)
2244 {
2245 struct compound_hdr hdr = {
2246 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2247 };
2248
2249 encode_compound_hdr(xdr, req, &hdr);
2250 encode_sequence(xdr, &args->seq_args, &hdr);
2251 encode_putfh(xdr, args->fh, &hdr);
2252 encode_open(xdr, args, &hdr);
2253 encode_getfh(xdr, &hdr);
2254 if (args->access)
2255 encode_access(xdr, args->access, &hdr);
2256 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2257 encode_nops(&hdr);
2258 }
2259
2260 /*
2261 * Encode an OPEN_CONFIRM request
2262 */
2263 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2264 struct xdr_stream *xdr,
2265 struct nfs_open_confirmargs *args)
2266 {
2267 struct compound_hdr hdr = {
2268 .nops = 0,
2269 };
2270
2271 encode_compound_hdr(xdr, req, &hdr);
2272 encode_putfh(xdr, args->fh, &hdr);
2273 encode_open_confirm(xdr, args, &hdr);
2274 encode_nops(&hdr);
2275 }
2276
2277 /*
2278 * Encode an OPEN request with no attributes.
2279 */
2280 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2281 struct xdr_stream *xdr,
2282 struct nfs_openargs *args)
2283 {
2284 struct compound_hdr hdr = {
2285 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2286 };
2287
2288 encode_compound_hdr(xdr, req, &hdr);
2289 encode_sequence(xdr, &args->seq_args, &hdr);
2290 encode_putfh(xdr, args->fh, &hdr);
2291 encode_open(xdr, args, &hdr);
2292 if (args->access)
2293 encode_access(xdr, args->access, &hdr);
2294 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2295 encode_nops(&hdr);
2296 }
2297
2298 /*
2299 * Encode an OPEN_DOWNGRADE request
2300 */
2301 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2302 struct xdr_stream *xdr,
2303 struct nfs_closeargs *args)
2304 {
2305 struct compound_hdr hdr = {
2306 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2307 };
2308
2309 encode_compound_hdr(xdr, req, &hdr);
2310 encode_sequence(xdr, &args->seq_args, &hdr);
2311 encode_putfh(xdr, args->fh, &hdr);
2312 encode_open_downgrade(xdr, args, &hdr);
2313 encode_getfattr(xdr, args->bitmask, &hdr);
2314 encode_nops(&hdr);
2315 }
2316
2317 /*
2318 * Encode a LOCK request
2319 */
2320 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2321 struct nfs_lock_args *args)
2322 {
2323 struct compound_hdr hdr = {
2324 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2325 };
2326
2327 encode_compound_hdr(xdr, req, &hdr);
2328 encode_sequence(xdr, &args->seq_args, &hdr);
2329 encode_putfh(xdr, args->fh, &hdr);
2330 encode_lock(xdr, args, &hdr);
2331 encode_nops(&hdr);
2332 }
2333
2334 /*
2335 * Encode a LOCKT request
2336 */
2337 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2338 struct nfs_lockt_args *args)
2339 {
2340 struct compound_hdr hdr = {
2341 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2342 };
2343
2344 encode_compound_hdr(xdr, req, &hdr);
2345 encode_sequence(xdr, &args->seq_args, &hdr);
2346 encode_putfh(xdr, args->fh, &hdr);
2347 encode_lockt(xdr, args, &hdr);
2348 encode_nops(&hdr);
2349 }
2350
2351 /*
2352 * Encode a LOCKU request
2353 */
2354 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2355 struct nfs_locku_args *args)
2356 {
2357 struct compound_hdr hdr = {
2358 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2359 };
2360
2361 encode_compound_hdr(xdr, req, &hdr);
2362 encode_sequence(xdr, &args->seq_args, &hdr);
2363 encode_putfh(xdr, args->fh, &hdr);
2364 encode_locku(xdr, args, &hdr);
2365 encode_nops(&hdr);
2366 }
2367
2368 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2369 struct xdr_stream *xdr,
2370 struct nfs_release_lockowner_args *args)
2371 {
2372 struct compound_hdr hdr = {
2373 .minorversion = 0,
2374 };
2375
2376 encode_compound_hdr(xdr, req, &hdr);
2377 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2378 encode_nops(&hdr);
2379 }
2380
2381 /*
2382 * Encode a READLINK request
2383 */
2384 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2385 const struct nfs4_readlink *args)
2386 {
2387 struct compound_hdr hdr = {
2388 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2389 };
2390
2391 encode_compound_hdr(xdr, req, &hdr);
2392 encode_sequence(xdr, &args->seq_args, &hdr);
2393 encode_putfh(xdr, args->fh, &hdr);
2394 encode_readlink(xdr, args, req, &hdr);
2395
2396 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2397 args->pgbase, args->pglen);
2398 encode_nops(&hdr);
2399 }
2400
2401 /*
2402 * Encode a READDIR request
2403 */
2404 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2405 const struct nfs4_readdir_arg *args)
2406 {
2407 struct compound_hdr hdr = {
2408 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2409 };
2410
2411 encode_compound_hdr(xdr, req, &hdr);
2412 encode_sequence(xdr, &args->seq_args, &hdr);
2413 encode_putfh(xdr, args->fh, &hdr);
2414 encode_readdir(xdr, args, req, &hdr);
2415
2416 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2417 args->pgbase, args->count);
2418 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2419 __func__, hdr.replen << 2, args->pages,
2420 args->pgbase, args->count);
2421 encode_nops(&hdr);
2422 }
2423
2424 /*
2425 * Encode a READ request
2426 */
2427 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2428 struct nfs_pgio_args *args)
2429 {
2430 struct compound_hdr hdr = {
2431 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2432 };
2433
2434 encode_compound_hdr(xdr, req, &hdr);
2435 encode_sequence(xdr, &args->seq_args, &hdr);
2436 encode_putfh(xdr, args->fh, &hdr);
2437 encode_read(xdr, args, &hdr);
2438
2439 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2440 args->pages, args->pgbase, args->count);
2441 req->rq_rcv_buf.flags |= XDRBUF_READ;
2442 encode_nops(&hdr);
2443 }
2444
2445 /*
2446 * Encode an SETATTR request
2447 */
2448 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2449 struct nfs_setattrargs *args)
2450 {
2451 struct compound_hdr hdr = {
2452 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2453 };
2454
2455 encode_compound_hdr(xdr, req, &hdr);
2456 encode_sequence(xdr, &args->seq_args, &hdr);
2457 encode_putfh(xdr, args->fh, &hdr);
2458 encode_setattr(xdr, args, args->server, &hdr);
2459 encode_getfattr(xdr, args->bitmask, &hdr);
2460 encode_nops(&hdr);
2461 }
2462
2463 /*
2464 * Encode a GETACL request
2465 */
2466 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2467 struct nfs_getaclargs *args)
2468 {
2469 struct compound_hdr hdr = {
2470 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2471 };
2472 uint32_t replen;
2473
2474 encode_compound_hdr(xdr, req, &hdr);
2475 encode_sequence(xdr, &args->seq_args, &hdr);
2476 encode_putfh(xdr, args->fh, &hdr);
2477 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2478 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2479
2480 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2481 args->acl_pages, args->acl_pgbase, args->acl_len);
2482
2483 encode_nops(&hdr);
2484 }
2485
2486 /*
2487 * Encode a WRITE request
2488 */
2489 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2490 struct nfs_pgio_args *args)
2491 {
2492 struct compound_hdr hdr = {
2493 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2494 };
2495
2496 encode_compound_hdr(xdr, req, &hdr);
2497 encode_sequence(xdr, &args->seq_args, &hdr);
2498 encode_putfh(xdr, args->fh, &hdr);
2499 encode_write(xdr, args, &hdr);
2500 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2501 if (args->bitmask)
2502 encode_getfattr(xdr, args->bitmask, &hdr);
2503 encode_nops(&hdr);
2504 }
2505
2506 /*
2507 * a COMMIT request
2508 */
2509 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2510 struct nfs_commitargs *args)
2511 {
2512 struct compound_hdr hdr = {
2513 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2514 };
2515
2516 encode_compound_hdr(xdr, req, &hdr);
2517 encode_sequence(xdr, &args->seq_args, &hdr);
2518 encode_putfh(xdr, args->fh, &hdr);
2519 encode_commit(xdr, args, &hdr);
2520 encode_nops(&hdr);
2521 }
2522
2523 /*
2524 * FSINFO request
2525 */
2526 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2527 struct nfs4_fsinfo_arg *args)
2528 {
2529 struct compound_hdr hdr = {
2530 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2531 };
2532
2533 encode_compound_hdr(xdr, req, &hdr);
2534 encode_sequence(xdr, &args->seq_args, &hdr);
2535 encode_putfh(xdr, args->fh, &hdr);
2536 encode_fsinfo(xdr, args->bitmask, &hdr);
2537 encode_nops(&hdr);
2538 }
2539
2540 /*
2541 * a PATHCONF request
2542 */
2543 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2544 const struct nfs4_pathconf_arg *args)
2545 {
2546 struct compound_hdr hdr = {
2547 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2548 };
2549
2550 encode_compound_hdr(xdr, req, &hdr);
2551 encode_sequence(xdr, &args->seq_args, &hdr);
2552 encode_putfh(xdr, args->fh, &hdr);
2553 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2554 &hdr);
2555 encode_nops(&hdr);
2556 }
2557
2558 /*
2559 * a STATFS request
2560 */
2561 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2562 const struct nfs4_statfs_arg *args)
2563 {
2564 struct compound_hdr hdr = {
2565 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2566 };
2567
2568 encode_compound_hdr(xdr, req, &hdr);
2569 encode_sequence(xdr, &args->seq_args, &hdr);
2570 encode_putfh(xdr, args->fh, &hdr);
2571 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2572 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2573 encode_nops(&hdr);
2574 }
2575
2576 /*
2577 * GETATTR_BITMAP request
2578 */
2579 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2580 struct xdr_stream *xdr,
2581 struct nfs4_server_caps_arg *args)
2582 {
2583 struct compound_hdr hdr = {
2584 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2585 };
2586
2587 encode_compound_hdr(xdr, req, &hdr);
2588 encode_sequence(xdr, &args->seq_args, &hdr);
2589 encode_putfh(xdr, args->fhandle, &hdr);
2590 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2591 FATTR4_WORD0_FH_EXPIRE_TYPE|
2592 FATTR4_WORD0_LINK_SUPPORT|
2593 FATTR4_WORD0_SYMLINK_SUPPORT|
2594 FATTR4_WORD0_ACLSUPPORT, &hdr);
2595 encode_nops(&hdr);
2596 }
2597
2598 /*
2599 * a RENEW request
2600 */
2601 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2602 struct nfs_client *clp)
2603 {
2604 struct compound_hdr hdr = {
2605 .nops = 0,
2606 };
2607
2608 encode_compound_hdr(xdr, req, &hdr);
2609 encode_renew(xdr, clp->cl_clientid, &hdr);
2610 encode_nops(&hdr);
2611 }
2612
2613 /*
2614 * a SETCLIENTID request
2615 */
2616 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2617 struct xdr_stream *xdr,
2618 struct nfs4_setclientid *sc)
2619 {
2620 struct compound_hdr hdr = {
2621 .nops = 0,
2622 };
2623
2624 encode_compound_hdr(xdr, req, &hdr);
2625 encode_setclientid(xdr, sc, &hdr);
2626 encode_nops(&hdr);
2627 }
2628
2629 /*
2630 * a SETCLIENTID_CONFIRM request
2631 */
2632 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2633 struct xdr_stream *xdr,
2634 struct nfs4_setclientid_res *arg)
2635 {
2636 struct compound_hdr hdr = {
2637 .nops = 0,
2638 };
2639
2640 encode_compound_hdr(xdr, req, &hdr);
2641 encode_setclientid_confirm(xdr, arg, &hdr);
2642 encode_nops(&hdr);
2643 }
2644
2645 /*
2646 * DELEGRETURN request
2647 */
2648 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2649 struct xdr_stream *xdr,
2650 const struct nfs4_delegreturnargs *args)
2651 {
2652 struct compound_hdr hdr = {
2653 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2654 };
2655
2656 encode_compound_hdr(xdr, req, &hdr);
2657 encode_sequence(xdr, &args->seq_args, &hdr);
2658 encode_putfh(xdr, args->fhandle, &hdr);
2659 encode_getfattr(xdr, args->bitmask, &hdr);
2660 encode_delegreturn(xdr, args->stateid, &hdr);
2661 encode_nops(&hdr);
2662 }
2663
2664 /*
2665 * Encode FS_LOCATIONS request
2666 */
2667 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2668 struct xdr_stream *xdr,
2669 struct nfs4_fs_locations_arg *args)
2670 {
2671 struct compound_hdr hdr = {
2672 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2673 };
2674 uint32_t replen;
2675
2676 encode_compound_hdr(xdr, req, &hdr);
2677 encode_sequence(xdr, &args->seq_args, &hdr);
2678 if (args->migration) {
2679 encode_putfh(xdr, args->fh, &hdr);
2680 replen = hdr.replen;
2681 encode_fs_locations(xdr, args->bitmask, &hdr);
2682 if (args->renew)
2683 encode_renew(xdr, args->clientid, &hdr);
2684 } else {
2685 encode_putfh(xdr, args->dir_fh, &hdr);
2686 encode_lookup(xdr, args->name, &hdr);
2687 replen = hdr.replen;
2688 encode_fs_locations(xdr, args->bitmask, &hdr);
2689 }
2690
2691 /* Set up reply kvec to capture returned fs_locations array. */
2692 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2693 0, PAGE_SIZE);
2694 encode_nops(&hdr);
2695 }
2696
2697 /*
2698 * Encode SECINFO request
2699 */
2700 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2701 struct xdr_stream *xdr,
2702 struct nfs4_secinfo_arg *args)
2703 {
2704 struct compound_hdr hdr = {
2705 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2706 };
2707
2708 encode_compound_hdr(xdr, req, &hdr);
2709 encode_sequence(xdr, &args->seq_args, &hdr);
2710 encode_putfh(xdr, args->dir_fh, &hdr);
2711 encode_secinfo(xdr, args->name, &hdr);
2712 encode_nops(&hdr);
2713 }
2714
2715 /*
2716 * Encode FSID_PRESENT request
2717 */
2718 static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2719 struct xdr_stream *xdr,
2720 struct nfs4_fsid_present_arg *args)
2721 {
2722 struct compound_hdr hdr = {
2723 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2724 };
2725
2726 encode_compound_hdr(xdr, req, &hdr);
2727 encode_sequence(xdr, &args->seq_args, &hdr);
2728 encode_putfh(xdr, args->fh, &hdr);
2729 encode_getfh(xdr, &hdr);
2730 if (args->renew)
2731 encode_renew(xdr, args->clientid, &hdr);
2732 encode_nops(&hdr);
2733 }
2734
2735 #if defined(CONFIG_NFS_V4_1)
2736 /*
2737 * BIND_CONN_TO_SESSION request
2738 */
2739 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2740 struct xdr_stream *xdr,
2741 struct nfs41_bind_conn_to_session_args *args)
2742 {
2743 struct compound_hdr hdr = {
2744 .minorversion = args->client->cl_mvops->minor_version,
2745 };
2746
2747 encode_compound_hdr(xdr, req, &hdr);
2748 encode_bind_conn_to_session(xdr, args, &hdr);
2749 encode_nops(&hdr);
2750 }
2751
2752 /*
2753 * EXCHANGE_ID request
2754 */
2755 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2756 struct xdr_stream *xdr,
2757 struct nfs41_exchange_id_args *args)
2758 {
2759 struct compound_hdr hdr = {
2760 .minorversion = args->client->cl_mvops->minor_version,
2761 };
2762
2763 encode_compound_hdr(xdr, req, &hdr);
2764 encode_exchange_id(xdr, args, &hdr);
2765 encode_nops(&hdr);
2766 }
2767
2768 /*
2769 * a CREATE_SESSION request
2770 */
2771 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2772 struct xdr_stream *xdr,
2773 struct nfs41_create_session_args *args)
2774 {
2775 struct compound_hdr hdr = {
2776 .minorversion = args->client->cl_mvops->minor_version,
2777 };
2778
2779 encode_compound_hdr(xdr, req, &hdr);
2780 encode_create_session(xdr, args, &hdr);
2781 encode_nops(&hdr);
2782 }
2783
2784 /*
2785 * a DESTROY_SESSION request
2786 */
2787 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2788 struct xdr_stream *xdr,
2789 struct nfs4_session *session)
2790 {
2791 struct compound_hdr hdr = {
2792 .minorversion = session->clp->cl_mvops->minor_version,
2793 };
2794
2795 encode_compound_hdr(xdr, req, &hdr);
2796 encode_destroy_session(xdr, session, &hdr);
2797 encode_nops(&hdr);
2798 }
2799
2800 /*
2801 * a DESTROY_CLIENTID request
2802 */
2803 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2804 struct xdr_stream *xdr,
2805 struct nfs_client *clp)
2806 {
2807 struct compound_hdr hdr = {
2808 .minorversion = clp->cl_mvops->minor_version,
2809 };
2810
2811 encode_compound_hdr(xdr, req, &hdr);
2812 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2813 encode_nops(&hdr);
2814 }
2815
2816 /*
2817 * a SEQUENCE request
2818 */
2819 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2820 struct nfs4_sequence_args *args)
2821 {
2822 struct compound_hdr hdr = {
2823 .minorversion = nfs4_xdr_minorversion(args),
2824 };
2825
2826 encode_compound_hdr(xdr, req, &hdr);
2827 encode_sequence(xdr, args, &hdr);
2828 encode_nops(&hdr);
2829 }
2830
2831 /*
2832 * a GET_LEASE_TIME request
2833 */
2834 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2835 struct xdr_stream *xdr,
2836 struct nfs4_get_lease_time_args *args)
2837 {
2838 struct compound_hdr hdr = {
2839 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2840 };
2841 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2842
2843 encode_compound_hdr(xdr, req, &hdr);
2844 encode_sequence(xdr, &args->la_seq_args, &hdr);
2845 encode_putrootfh(xdr, &hdr);
2846 encode_fsinfo(xdr, lease_bitmap, &hdr);
2847 encode_nops(&hdr);
2848 }
2849
2850 /*
2851 * a RECLAIM_COMPLETE request
2852 */
2853 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2854 struct xdr_stream *xdr,
2855 struct nfs41_reclaim_complete_args *args)
2856 {
2857 struct compound_hdr hdr = {
2858 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2859 };
2860
2861 encode_compound_hdr(xdr, req, &hdr);
2862 encode_sequence(xdr, &args->seq_args, &hdr);
2863 encode_reclaim_complete(xdr, args, &hdr);
2864 encode_nops(&hdr);
2865 }
2866
2867 /*
2868 * Encode GETDEVICEINFO request
2869 */
2870 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2871 struct xdr_stream *xdr,
2872 struct nfs4_getdeviceinfo_args *args)
2873 {
2874 struct compound_hdr hdr = {
2875 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2876 };
2877
2878 encode_compound_hdr(xdr, req, &hdr);
2879 encode_sequence(xdr, &args->seq_args, &hdr);
2880 encode_getdeviceinfo(xdr, args, &hdr);
2881
2882 /* set up reply kvec. Subtract notification bitmap max size (2)
2883 * so that notification bitmap is put in xdr_buf tail */
2884 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2885 args->pdev->pages, args->pdev->pgbase,
2886 args->pdev->pglen);
2887
2888 encode_nops(&hdr);
2889 }
2890
2891 /*
2892 * Encode LAYOUTGET request
2893 */
2894 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2895 struct xdr_stream *xdr,
2896 struct nfs4_layoutget_args *args)
2897 {
2898 struct compound_hdr hdr = {
2899 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2900 };
2901
2902 encode_compound_hdr(xdr, req, &hdr);
2903 encode_sequence(xdr, &args->seq_args, &hdr);
2904 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2905 encode_layoutget(xdr, args, &hdr);
2906
2907 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2908 args->layout.pages, 0, args->layout.pglen);
2909
2910 encode_nops(&hdr);
2911 }
2912
2913 /*
2914 * Encode LAYOUTCOMMIT request
2915 */
2916 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2917 struct xdr_stream *xdr,
2918 struct nfs4_layoutcommit_args *args)
2919 {
2920 struct nfs4_layoutcommit_data *data =
2921 container_of(args, struct nfs4_layoutcommit_data, args);
2922 struct compound_hdr hdr = {
2923 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2924 };
2925
2926 encode_compound_hdr(xdr, req, &hdr);
2927 encode_sequence(xdr, &args->seq_args, &hdr);
2928 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2929 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2930 encode_getfattr(xdr, args->bitmask, &hdr);
2931 encode_nops(&hdr);
2932 }
2933
2934 /*
2935 * Encode LAYOUTRETURN request
2936 */
2937 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2938 struct xdr_stream *xdr,
2939 struct nfs4_layoutreturn_args *args)
2940 {
2941 struct compound_hdr hdr = {
2942 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2943 };
2944
2945 encode_compound_hdr(xdr, req, &hdr);
2946 encode_sequence(xdr, &args->seq_args, &hdr);
2947 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2948 encode_layoutreturn(xdr, args, &hdr);
2949 encode_nops(&hdr);
2950 }
2951
2952 /*
2953 * Encode SECINFO_NO_NAME request
2954 */
2955 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2956 struct xdr_stream *xdr,
2957 struct nfs41_secinfo_no_name_args *args)
2958 {
2959 struct compound_hdr hdr = {
2960 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2961 };
2962
2963 encode_compound_hdr(xdr, req, &hdr);
2964 encode_sequence(xdr, &args->seq_args, &hdr);
2965 encode_putrootfh(xdr, &hdr);
2966 encode_secinfo_no_name(xdr, args, &hdr);
2967 encode_nops(&hdr);
2968 return 0;
2969 }
2970
2971 /*
2972 * Encode TEST_STATEID request
2973 */
2974 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2975 struct xdr_stream *xdr,
2976 struct nfs41_test_stateid_args *args)
2977 {
2978 struct compound_hdr hdr = {
2979 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2980 };
2981
2982 encode_compound_hdr(xdr, req, &hdr);
2983 encode_sequence(xdr, &args->seq_args, &hdr);
2984 encode_test_stateid(xdr, args, &hdr);
2985 encode_nops(&hdr);
2986 }
2987
2988 /*
2989 * Encode FREE_STATEID request
2990 */
2991 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2992 struct xdr_stream *xdr,
2993 struct nfs41_free_stateid_args *args)
2994 {
2995 struct compound_hdr hdr = {
2996 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2997 };
2998
2999 encode_compound_hdr(xdr, req, &hdr);
3000 encode_sequence(xdr, &args->seq_args, &hdr);
3001 encode_free_stateid(xdr, args, &hdr);
3002 encode_nops(&hdr);
3003 }
3004 #endif /* CONFIG_NFS_V4_1 */
3005
3006 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3007 {
3008 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3009 "Remaining buffer length is %tu words.\n",
3010 func, xdr->end - xdr->p);
3011 }
3012
3013 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3014 {
3015 __be32 *p;
3016
3017 p = xdr_inline_decode(xdr, 4);
3018 if (unlikely(!p))
3019 goto out_overflow;
3020 *len = be32_to_cpup(p);
3021 p = xdr_inline_decode(xdr, *len);
3022 if (unlikely(!p))
3023 goto out_overflow;
3024 *string = (char *)p;
3025 return 0;
3026 out_overflow:
3027 print_overflow_msg(__func__, xdr);
3028 return -EIO;
3029 }
3030
3031 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3032 {
3033 __be32 *p;
3034
3035 p = xdr_inline_decode(xdr, 8);
3036 if (unlikely(!p))
3037 goto out_overflow;
3038 hdr->status = be32_to_cpup(p++);
3039 hdr->taglen = be32_to_cpup(p);
3040
3041 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3042 if (unlikely(!p))
3043 goto out_overflow;
3044 hdr->tag = (char *)p;
3045 p += XDR_QUADLEN(hdr->taglen);
3046 hdr->nops = be32_to_cpup(p);
3047 if (unlikely(hdr->nops < 1))
3048 return nfs4_stat_to_errno(hdr->status);
3049 return 0;
3050 out_overflow:
3051 print_overflow_msg(__func__, xdr);
3052 return -EIO;
3053 }
3054
3055 static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3056 int *nfs_retval)
3057 {
3058 __be32 *p;
3059 uint32_t opnum;
3060 int32_t nfserr;
3061
3062 p = xdr_inline_decode(xdr, 8);
3063 if (unlikely(!p))
3064 goto out_overflow;
3065 opnum = be32_to_cpup(p++);
3066 if (unlikely(opnum != expected))
3067 goto out_bad_operation;
3068 nfserr = be32_to_cpup(p);
3069 if (nfserr == NFS_OK)
3070 *nfs_retval = 0;
3071 else
3072 *nfs_retval = nfs4_stat_to_errno(nfserr);
3073 return true;
3074 out_bad_operation:
3075 dprintk("nfs: Server returned operation"
3076 " %d but we issued a request for %d\n",
3077 opnum, expected);
3078 *nfs_retval = -EREMOTEIO;
3079 return false;
3080 out_overflow:
3081 print_overflow_msg(__func__, xdr);
3082 *nfs_retval = -EIO;
3083 return false;
3084 }
3085
3086 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3087 {
3088 int retval;
3089
3090 __decode_op_hdr(xdr, expected, &retval);
3091 return retval;
3092 }
3093
3094 /* Dummy routine */
3095 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3096 {
3097 __be32 *p;
3098 unsigned int strlen;
3099 char *str;
3100
3101 p = xdr_inline_decode(xdr, 12);
3102 if (likely(p))
3103 return decode_opaque_inline(xdr, &strlen, &str);
3104 print_overflow_msg(__func__, xdr);
3105 return -EIO;
3106 }
3107
3108 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3109 {
3110 uint32_t bmlen;
3111 __be32 *p;
3112
3113 p = xdr_inline_decode(xdr, 4);
3114 if (unlikely(!p))
3115 goto out_overflow;
3116 bmlen = be32_to_cpup(p);
3117
3118 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3119 p = xdr_inline_decode(xdr, (bmlen << 2));
3120 if (unlikely(!p))
3121 goto out_overflow;
3122 if (bmlen > 0) {
3123 bitmap[0] = be32_to_cpup(p++);
3124 if (bmlen > 1) {
3125 bitmap[1] = be32_to_cpup(p++);
3126 if (bmlen > 2)
3127 bitmap[2] = be32_to_cpup(p);
3128 }
3129 }
3130 return 0;
3131 out_overflow:
3132 print_overflow_msg(__func__, xdr);
3133 return -EIO;
3134 }
3135
3136 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3137 {
3138 __be32 *p;
3139
3140 p = xdr_inline_decode(xdr, 4);
3141 if (unlikely(!p))
3142 goto out_overflow;
3143 *attrlen = be32_to_cpup(p);
3144 *savep = xdr_stream_pos(xdr);
3145 return 0;
3146 out_overflow:
3147 print_overflow_msg(__func__, xdr);
3148 return -EIO;
3149 }
3150
3151 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3152 {
3153 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3154 int ret;
3155 ret = decode_attr_bitmap(xdr, bitmask);
3156 if (unlikely(ret < 0))
3157 return ret;
3158 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3159 } else
3160 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3161 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3162 bitmask[0], bitmask[1], bitmask[2]);
3163 return 0;
3164 }
3165
3166 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3167 {
3168 __be32 *p;
3169 int ret = 0;
3170
3171 *type = 0;
3172 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3173 return -EIO;
3174 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3175 p = xdr_inline_decode(xdr, 4);
3176 if (unlikely(!p))
3177 goto out_overflow;
3178 *type = be32_to_cpup(p);
3179 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3180 dprintk("%s: bad type %d\n", __func__, *type);
3181 return -EIO;
3182 }
3183 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3184 ret = NFS_ATTR_FATTR_TYPE;
3185 }
3186 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3187 return ret;
3188 out_overflow:
3189 print_overflow_msg(__func__, xdr);
3190 return -EIO;
3191 }
3192
3193 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3194 uint32_t *bitmap, uint32_t *type)
3195 {
3196 __be32 *p;
3197
3198 *type = 0;
3199 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3200 return -EIO;
3201 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3202 p = xdr_inline_decode(xdr, 4);
3203 if (unlikely(!p))
3204 goto out_overflow;
3205 *type = be32_to_cpup(p);
3206 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3207 }
3208 dprintk("%s: expire type=0x%x\n", __func__, *type);
3209 return 0;
3210 out_overflow:
3211 print_overflow_msg(__func__, xdr);
3212 return -EIO;
3213 }
3214
3215 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3216 {
3217 __be32 *p;
3218 int ret = 0;
3219
3220 *change = 0;
3221 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3222 return -EIO;
3223 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3224 p = xdr_inline_decode(xdr, 8);
3225 if (unlikely(!p))
3226 goto out_overflow;
3227 xdr_decode_hyper(p, change);
3228 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3229 ret = NFS_ATTR_FATTR_CHANGE;
3230 }
3231 dprintk("%s: change attribute=%Lu\n", __func__,
3232 (unsigned long long)*change);
3233 return ret;
3234 out_overflow:
3235 print_overflow_msg(__func__, xdr);
3236 return -EIO;
3237 }
3238
3239 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3240 {
3241 __be32 *p;
3242 int ret = 0;
3243
3244 *size = 0;
3245 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3246 return -EIO;
3247 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3248 p = xdr_inline_decode(xdr, 8);
3249 if (unlikely(!p))
3250 goto out_overflow;
3251 xdr_decode_hyper(p, size);
3252 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3253 ret = NFS_ATTR_FATTR_SIZE;
3254 }
3255 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3256 return ret;
3257 out_overflow:
3258 print_overflow_msg(__func__, xdr);
3259 return -EIO;
3260 }
3261
3262 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3263 {
3264 __be32 *p;
3265
3266 *res = 0;
3267 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3268 return -EIO;
3269 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3270 p = xdr_inline_decode(xdr, 4);
3271 if (unlikely(!p))
3272 goto out_overflow;
3273 *res = be32_to_cpup(p);
3274 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3275 }
3276 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3277 return 0;
3278 out_overflow:
3279 print_overflow_msg(__func__, xdr);
3280 return -EIO;
3281 }
3282
3283 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3284 {
3285 __be32 *p;
3286
3287 *res = 0;
3288 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3289 return -EIO;
3290 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3291 p = xdr_inline_decode(xdr, 4);
3292 if (unlikely(!p))
3293 goto out_overflow;
3294 *res = be32_to_cpup(p);
3295 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3296 }
3297 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3298 return 0;
3299 out_overflow:
3300 print_overflow_msg(__func__, xdr);
3301 return -EIO;
3302 }
3303
3304 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3305 {
3306 __be32 *p;
3307 int ret = 0;
3308
3309 fsid->major = 0;
3310 fsid->minor = 0;
3311 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3312 return -EIO;
3313 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3314 p = xdr_inline_decode(xdr, 16);
3315 if (unlikely(!p))
3316 goto out_overflow;
3317 p = xdr_decode_hyper(p, &fsid->major);
3318 xdr_decode_hyper(p, &fsid->minor);
3319 bitmap[0] &= ~FATTR4_WORD0_FSID;
3320 ret = NFS_ATTR_FATTR_FSID;
3321 }
3322 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3323 (unsigned long long)fsid->major,
3324 (unsigned long long)fsid->minor);
3325 return ret;
3326 out_overflow:
3327 print_overflow_msg(__func__, xdr);
3328 return -EIO;
3329 }
3330
3331 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3332 {
3333 __be32 *p;
3334
3335 *res = 60;
3336 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3337 return -EIO;
3338 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3339 p = xdr_inline_decode(xdr, 4);
3340 if (unlikely(!p))
3341 goto out_overflow;
3342 *res = be32_to_cpup(p);
3343 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3344 }
3345 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3346 return 0;
3347 out_overflow:
3348 print_overflow_msg(__func__, xdr);
3349 return -EIO;
3350 }
3351
3352 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3353 {
3354 __be32 *p;
3355
3356 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3357 return -EIO;
3358 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3359 p = xdr_inline_decode(xdr, 4);
3360 if (unlikely(!p))
3361 goto out_overflow;
3362 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3363 *res = -be32_to_cpup(p);
3364 }
3365 return 0;
3366 out_overflow:
3367 print_overflow_msg(__func__, xdr);
3368 return -EIO;
3369 }
3370
3371 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3372 {
3373 __be32 *p;
3374 int len;
3375
3376 if (fh != NULL)
3377 memset(fh, 0, sizeof(*fh));
3378
3379 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3380 return -EIO;
3381 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3382 p = xdr_inline_decode(xdr, 4);
3383 if (unlikely(!p))
3384 goto out_overflow;
3385 len = be32_to_cpup(p);
3386 if (len > NFS4_FHSIZE)
3387 return -EIO;
3388 p = xdr_inline_decode(xdr, len);
3389 if (unlikely(!p))
3390 goto out_overflow;
3391 if (fh != NULL) {
3392 memcpy(fh->data, p, len);
3393 fh->size = len;
3394 }
3395 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3396 }
3397 return 0;
3398 out_overflow:
3399 print_overflow_msg(__func__, xdr);
3400 return -EIO;
3401 }
3402
3403 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3404 {
3405 __be32 *p;
3406
3407 *res = 0;
3408 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3409 return -EIO;
3410 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3411 p = xdr_inline_decode(xdr, 4);
3412 if (unlikely(!p))
3413 goto out_overflow;
3414 *res = be32_to_cpup(p);
3415 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3416 }
3417 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3418 return 0;
3419 out_overflow:
3420 print_overflow_msg(__func__, xdr);
3421 return -EIO;
3422 }
3423
3424 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3425 {
3426 __be32 *p;
3427 int ret = 0;
3428
3429 *fileid = 0;
3430 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3431 return -EIO;
3432 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3433 p = xdr_inline_decode(xdr, 8);
3434 if (unlikely(!p))
3435 goto out_overflow;
3436 xdr_decode_hyper(p, fileid);
3437 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3438 ret = NFS_ATTR_FATTR_FILEID;
3439 }
3440 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3441 return ret;
3442 out_overflow:
3443 print_overflow_msg(__func__, xdr);
3444 return -EIO;
3445 }
3446
3447 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3448 {
3449 __be32 *p;
3450 int ret = 0;
3451
3452 *fileid = 0;
3453 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3454 return -EIO;
3455 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3456 p = xdr_inline_decode(xdr, 8);
3457 if (unlikely(!p))
3458 goto out_overflow;
3459 xdr_decode_hyper(p, fileid);
3460 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3461 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3462 }
3463 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3464 return ret;
3465 out_overflow:
3466 print_overflow_msg(__func__, xdr);
3467 return -EIO;
3468 }
3469
3470 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3471 {
3472 __be32 *p;
3473 int status = 0;
3474
3475 *res = 0;
3476 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3477 return -EIO;
3478 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3479 p = xdr_inline_decode(xdr, 8);
3480 if (unlikely(!p))
3481 goto out_overflow;
3482 xdr_decode_hyper(p, res);
3483 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3484 }
3485 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3486 return status;
3487 out_overflow:
3488 print_overflow_msg(__func__, xdr);
3489 return -EIO;
3490 }
3491
3492 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3493 {
3494 __be32 *p;
3495 int status = 0;
3496
3497 *res = 0;
3498 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3499 return -EIO;
3500 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3501 p = xdr_inline_decode(xdr, 8);
3502 if (unlikely(!p))
3503 goto out_overflow;
3504 xdr_decode_hyper(p, res);
3505 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3506 }
3507 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3508 return status;
3509 out_overflow:
3510 print_overflow_msg(__func__, xdr);
3511 return -EIO;
3512 }
3513
3514 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3515 {
3516 __be32 *p;
3517 int status = 0;
3518
3519 *res = 0;
3520 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3521 return -EIO;
3522 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3523 p = xdr_inline_decode(xdr, 8);
3524 if (unlikely(!p))
3525 goto out_overflow;
3526 xdr_decode_hyper(p, res);
3527 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3528 }
3529 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3530 return status;
3531 out_overflow:
3532 print_overflow_msg(__func__, xdr);
3533 return -EIO;
3534 }
3535
3536 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3537 {
3538 u32 n;
3539 __be32 *p;
3540 int status = 0;
3541
3542 p = xdr_inline_decode(xdr, 4);
3543 if (unlikely(!p))
3544 goto out_overflow;
3545 n = be32_to_cpup(p);
3546 if (n == 0)
3547 goto root_path;
3548 dprintk("pathname4: ");
3549 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3550 dprintk("cannot parse %d components in path\n", n);
3551 goto out_eio;
3552 }
3553 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3554 struct nfs4_string *component = &path->components[path->ncomponents];
3555 status = decode_opaque_inline(xdr, &component->len, &component->data);
3556 if (unlikely(status != 0))
3557 goto out_eio;
3558 ifdebug (XDR)
3559 pr_cont("%s%.*s ",
3560 (path->ncomponents != n ? "/ " : ""),
3561 component->len, component->data);
3562 }
3563 out:
3564 return status;
3565 root_path:
3566 /* a root pathname is sent as a zero component4 */
3567 path->ncomponents = 1;
3568 path->components[0].len=0;
3569 path->components[0].data=NULL;
3570 dprintk("pathname4: /\n");
3571 goto out;
3572 out_eio:
3573 dprintk(" status %d", status);
3574 status = -EIO;
3575 goto out;
3576 out_overflow:
3577 print_overflow_msg(__func__, xdr);
3578 return -EIO;
3579 }
3580
3581 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3582 {
3583 int n;
3584 __be32 *p;
3585 int status = -EIO;
3586
3587 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3588 goto out;
3589 status = 0;
3590 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3591 goto out;
3592 status = -EIO;
3593 /* Ignore borken servers that return unrequested attrs */
3594 if (unlikely(res == NULL))
3595 goto out;
3596 dprintk("%s: fsroot:\n", __func__);
3597 status = decode_pathname(xdr, &res->fs_path);
3598 if (unlikely(status != 0))
3599 goto out;
3600 p = xdr_inline_decode(xdr, 4);
3601 if (unlikely(!p))
3602 goto out_overflow;
3603 n = be32_to_cpup(p);
3604 if (n <= 0)
3605 goto out_eio;
3606 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3607 u32 m;
3608 struct nfs4_fs_location *loc;
3609
3610 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3611 break;
3612 loc = &res->locations[res->nlocations];
3613 p = xdr_inline_decode(xdr, 4);
3614 if (unlikely(!p))
3615 goto out_overflow;
3616 m = be32_to_cpup(p);
3617
3618 dprintk("%s: servers:\n", __func__);
3619 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3620 struct nfs4_string *server;
3621
3622 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3623 unsigned int i;
3624 dprintk("%s: using first %u of %u servers "
3625 "returned for location %u\n",
3626 __func__,
3627 NFS4_FS_LOCATION_MAXSERVERS,
3628 m, res->nlocations);
3629 for (i = loc->nservers; i < m; i++) {
3630 unsigned int len;
3631 char *data;
3632 status = decode_opaque_inline(xdr, &len, &data);
3633 if (unlikely(status != 0))
3634 goto out_eio;
3635 }
3636 break;
3637 }
3638 server = &loc->servers[loc->nservers];
3639 status = decode_opaque_inline(xdr, &server->len, &server->data);
3640 if (unlikely(status != 0))
3641 goto out_eio;
3642 dprintk("%s ", server->data);
3643 }
3644 status = decode_pathname(xdr, &loc->rootpath);
3645 if (unlikely(status != 0))
3646 goto out_eio;
3647 }
3648 if (res->nlocations != 0)
3649 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3650 out:
3651 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3652 return status;
3653 out_overflow:
3654 print_overflow_msg(__func__, xdr);
3655 out_eio:
3656 status = -EIO;
3657 goto out;
3658 }
3659
3660 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3661 {
3662 __be32 *p;
3663 int status = 0;
3664
3665 *res = 0;
3666 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3667 return -EIO;
3668 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3669 p = xdr_inline_decode(xdr, 8);
3670 if (unlikely(!p))
3671 goto out_overflow;
3672 xdr_decode_hyper(p, res);
3673 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3674 }
3675 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3676 return status;
3677 out_overflow:
3678 print_overflow_msg(__func__, xdr);
3679 return -EIO;
3680 }
3681
3682 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3683 {
3684 __be32 *p;
3685 int status = 0;
3686
3687 *maxlink = 1;
3688 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3689 return -EIO;
3690 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3691 p = xdr_inline_decode(xdr, 4);
3692 if (unlikely(!p))
3693 goto out_overflow;
3694 *maxlink = be32_to_cpup(p);
3695 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3696 }
3697 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3698 return status;
3699 out_overflow:
3700 print_overflow_msg(__func__, xdr);
3701 return -EIO;
3702 }
3703
3704 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3705 {
3706 __be32 *p;
3707 int status = 0;
3708
3709 *maxname = 1024;
3710 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3711 return -EIO;
3712 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3713 p = xdr_inline_decode(xdr, 4);
3714 if (unlikely(!p))
3715 goto out_overflow;
3716 *maxname = be32_to_cpup(p);
3717 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3718 }
3719 dprintk("%s: maxname=%u\n", __func__, *maxname);
3720 return status;
3721 out_overflow:
3722 print_overflow_msg(__func__, xdr);
3723 return -EIO;
3724 }
3725
3726 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3727 {
3728 __be32 *p;
3729 int status = 0;
3730
3731 *res = 1024;
3732 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3733 return -EIO;
3734 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3735 uint64_t maxread;
3736 p = xdr_inline_decode(xdr, 8);
3737 if (unlikely(!p))
3738 goto out_overflow;
3739 xdr_decode_hyper(p, &maxread);
3740 if (maxread > 0x7FFFFFFF)
3741 maxread = 0x7FFFFFFF;
3742 *res = (uint32_t)maxread;
3743 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3744 }
3745 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3746 return status;
3747 out_overflow:
3748 print_overflow_msg(__func__, xdr);
3749 return -EIO;
3750 }
3751
3752 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3753 {
3754 __be32 *p;
3755 int status = 0;
3756
3757 *res = 1024;
3758 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3759 return -EIO;
3760 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3761 uint64_t maxwrite;
3762 p = xdr_inline_decode(xdr, 8);
3763 if (unlikely(!p))
3764 goto out_overflow;
3765 xdr_decode_hyper(p, &maxwrite);
3766 if (maxwrite > 0x7FFFFFFF)
3767 maxwrite = 0x7FFFFFFF;
3768 *res = (uint32_t)maxwrite;
3769 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3770 }
3771 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3772 return status;
3773 out_overflow:
3774 print_overflow_msg(__func__, xdr);
3775 return -EIO;
3776 }
3777
3778 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3779 {
3780 uint32_t tmp;
3781 __be32 *p;
3782 int ret = 0;
3783
3784 *mode = 0;
3785 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3786 return -EIO;
3787 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3788 p = xdr_inline_decode(xdr, 4);
3789 if (unlikely(!p))
3790 goto out_overflow;
3791 tmp = be32_to_cpup(p);
3792 *mode = tmp & ~S_IFMT;
3793 bitmap[1] &= ~FATTR4_WORD1_MODE;
3794 ret = NFS_ATTR_FATTR_MODE;
3795 }
3796 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3797 return ret;
3798 out_overflow:
3799 print_overflow_msg(__func__, xdr);
3800 return -EIO;
3801 }
3802
3803 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3804 {
3805 __be32 *p;
3806 int ret = 0;
3807
3808 *nlink = 1;
3809 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3810 return -EIO;
3811 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3812 p = xdr_inline_decode(xdr, 4);
3813 if (unlikely(!p))
3814 goto out_overflow;
3815 *nlink = be32_to_cpup(p);
3816 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3817 ret = NFS_ATTR_FATTR_NLINK;
3818 }
3819 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3820 return ret;
3821 out_overflow:
3822 print_overflow_msg(__func__, xdr);
3823 return -EIO;
3824 }
3825
3826 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3827 const struct nfs_server *server, kuid_t *uid,
3828 struct nfs4_string *owner_name)
3829 {
3830 uint32_t len;
3831 __be32 *p;
3832 int ret = 0;
3833
3834 *uid = make_kuid(&init_user_ns, -2);
3835 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3836 return -EIO;
3837 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3838 p = xdr_inline_decode(xdr, 4);
3839 if (unlikely(!p))
3840 goto out_overflow;
3841 len = be32_to_cpup(p);
3842 p = xdr_inline_decode(xdr, len);
3843 if (unlikely(!p))
3844 goto out_overflow;
3845 if (owner_name != NULL) {
3846 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3847 if (owner_name->data != NULL) {
3848 owner_name->len = len;
3849 ret = NFS_ATTR_FATTR_OWNER_NAME;
3850 }
3851 } else if (len < XDR_MAX_NETOBJ) {
3852 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3853 ret = NFS_ATTR_FATTR_OWNER;
3854 else
3855 dprintk("%s: nfs_map_name_to_uid failed!\n",
3856 __func__);
3857 } else
3858 dprintk("%s: name too long (%u)!\n",
3859 __func__, len);
3860 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3861 }
3862 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3863 return ret;
3864 out_overflow:
3865 print_overflow_msg(__func__, xdr);
3866 return -EIO;
3867 }
3868
3869 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3870 const struct nfs_server *server, kgid_t *gid,
3871 struct nfs4_string *group_name)
3872 {
3873 uint32_t len;
3874 __be32 *p;
3875 int ret = 0;
3876
3877 *gid = make_kgid(&init_user_ns, -2);
3878 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3879 return -EIO;
3880 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3881 p = xdr_inline_decode(xdr, 4);
3882 if (unlikely(!p))
3883 goto out_overflow;
3884 len = be32_to_cpup(p);
3885 p = xdr_inline_decode(xdr, len);
3886 if (unlikely(!p))
3887 goto out_overflow;
3888 if (group_name != NULL) {
3889 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3890 if (group_name->data != NULL) {
3891 group_name->len = len;
3892 ret = NFS_ATTR_FATTR_GROUP_NAME;
3893 }
3894 } else if (len < XDR_MAX_NETOBJ) {
3895 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3896 ret = NFS_ATTR_FATTR_GROUP;
3897 else
3898 dprintk("%s: nfs_map_group_to_gid failed!\n",
3899 __func__);
3900 } else
3901 dprintk("%s: name too long (%u)!\n",
3902 __func__, len);
3903 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3904 }
3905 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3906 return ret;
3907 out_overflow:
3908 print_overflow_msg(__func__, xdr);
3909 return -EIO;
3910 }
3911
3912 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3913 {
3914 uint32_t major = 0, minor = 0;
3915 __be32 *p;
3916 int ret = 0;
3917
3918 *rdev = MKDEV(0,0);
3919 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3920 return -EIO;
3921 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3922 dev_t tmp;
3923
3924 p = xdr_inline_decode(xdr, 8);
3925 if (unlikely(!p))
3926 goto out_overflow;
3927 major = be32_to_cpup(p++);
3928 minor = be32_to_cpup(p);
3929 tmp = MKDEV(major, minor);
3930 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3931 *rdev = tmp;
3932 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3933 ret = NFS_ATTR_FATTR_RDEV;
3934 }
3935 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3936 return ret;
3937 out_overflow:
3938 print_overflow_msg(__func__, xdr);
3939 return -EIO;
3940 }
3941
3942 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3943 {
3944 __be32 *p;
3945 int status = 0;
3946
3947 *res = 0;
3948 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3949 return -EIO;
3950 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3951 p = xdr_inline_decode(xdr, 8);
3952 if (unlikely(!p))
3953 goto out_overflow;
3954 xdr_decode_hyper(p, res);
3955 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3956 }
3957 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3958 return status;
3959 out_overflow:
3960 print_overflow_msg(__func__, xdr);
3961 return -EIO;
3962 }
3963
3964 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3965 {
3966 __be32 *p;
3967 int status = 0;
3968
3969 *res = 0;
3970 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3971 return -EIO;
3972 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3973 p = xdr_inline_decode(xdr, 8);
3974 if (unlikely(!p))
3975 goto out_overflow;
3976 xdr_decode_hyper(p, res);
3977 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3978 }
3979 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3980 return status;
3981 out_overflow:
3982 print_overflow_msg(__func__, xdr);
3983 return -EIO;
3984 }
3985
3986 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3987 {
3988 __be32 *p;
3989 int status = 0;
3990
3991 *res = 0;
3992 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3993 return -EIO;
3994 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3995 p = xdr_inline_decode(xdr, 8);
3996 if (unlikely(!p))
3997 goto out_overflow;
3998 xdr_decode_hyper(p, res);
3999 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4000 }
4001 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4002 return status;
4003 out_overflow:
4004 print_overflow_msg(__func__, xdr);
4005 return -EIO;
4006 }
4007
4008 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4009 {
4010 __be32 *p;
4011 int ret = 0;
4012
4013 *used = 0;
4014 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4015 return -EIO;
4016 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4017 p = xdr_inline_decode(xdr, 8);
4018 if (unlikely(!p))
4019 goto out_overflow;
4020 xdr_decode_hyper(p, used);
4021 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4022 ret = NFS_ATTR_FATTR_SPACE_USED;
4023 }
4024 dprintk("%s: space used=%Lu\n", __func__,
4025 (unsigned long long)*used);
4026 return ret;
4027 out_overflow:
4028 print_overflow_msg(__func__, xdr);
4029 return -EIO;
4030 }
4031
4032 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4033 {
4034 __be32 *p;
4035 uint64_t sec;
4036 uint32_t nsec;
4037
4038 p = xdr_inline_decode(xdr, 12);
4039 if (unlikely(!p))
4040 goto out_overflow;
4041 p = xdr_decode_hyper(p, &sec);
4042 nsec = be32_to_cpup(p);
4043 time->tv_sec = (time_t)sec;
4044 time->tv_nsec = (long)nsec;
4045 return 0;
4046 out_overflow:
4047 print_overflow_msg(__func__, xdr);
4048 return -EIO;
4049 }
4050
4051 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4052 {
4053 int status = 0;
4054
4055 time->tv_sec = 0;
4056 time->tv_nsec = 0;
4057 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4058 return -EIO;
4059 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4060 status = decode_attr_time(xdr, time);
4061 if (status == 0)
4062 status = NFS_ATTR_FATTR_ATIME;
4063 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4064 }
4065 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4066 return status;
4067 }
4068
4069 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4070 {
4071 int status = 0;
4072
4073 time->tv_sec = 0;
4074 time->tv_nsec = 0;
4075 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4076 return -EIO;
4077 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4078 status = decode_attr_time(xdr, time);
4079 if (status == 0)
4080 status = NFS_ATTR_FATTR_CTIME;
4081 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4082 }
4083 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4084 return status;
4085 }
4086
4087 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4088 struct timespec *time)
4089 {
4090 int status = 0;
4091
4092 time->tv_sec = 0;
4093 time->tv_nsec = 0;
4094 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4095 return -EIO;
4096 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4097 status = decode_attr_time(xdr, time);
4098 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4099 }
4100 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4101 (long)time->tv_nsec);
4102 return status;
4103 }
4104
4105 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4106 struct nfs4_label *label)
4107 {
4108 uint32_t pi = 0;
4109 uint32_t lfs = 0;
4110 __u32 len;
4111 __be32 *p;
4112 int status = 0;
4113
4114 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4115 return -EIO;
4116 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4117 p = xdr_inline_decode(xdr, 4);
4118 if (unlikely(!p))
4119 goto out_overflow;
4120 lfs = be32_to_cpup(p++);
4121 p = xdr_inline_decode(xdr, 4);
4122 if (unlikely(!p))
4123 goto out_overflow;
4124 pi = be32_to_cpup(p++);
4125 p = xdr_inline_decode(xdr, 4);
4126 if (unlikely(!p))
4127 goto out_overflow;
4128 len = be32_to_cpup(p++);
4129 p = xdr_inline_decode(xdr, len);
4130 if (unlikely(!p))
4131 goto out_overflow;
4132 if (len < NFS4_MAXLABELLEN) {
4133 if (label) {
4134 memcpy(label->label, p, len);
4135 label->len = len;
4136 label->pi = pi;
4137 label->lfs = lfs;
4138 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4139 }
4140 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4141 } else
4142 printk(KERN_WARNING "%s: label too long (%u)!\n",
4143 __func__, len);
4144 }
4145 if (label && label->label)
4146 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4147 (char *)label->label, label->len, label->pi, label->lfs);
4148 return status;
4149
4150 out_overflow:
4151 print_overflow_msg(__func__, xdr);
4152 return -EIO;
4153 }
4154
4155 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4156 {
4157 int status = 0;
4158
4159 time->tv_sec = 0;
4160 time->tv_nsec = 0;
4161 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4162 return -EIO;
4163 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4164 status = decode_attr_time(xdr, time);
4165 if (status == 0)
4166 status = NFS_ATTR_FATTR_MTIME;
4167 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4168 }
4169 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4170 return status;
4171 }
4172
4173 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4174 {
4175 unsigned int attrwords = XDR_QUADLEN(attrlen);
4176 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4177
4178 if (unlikely(attrwords != nwords)) {
4179 dprintk("%s: server returned incorrect attribute length: "
4180 "%u %c %u\n",
4181 __func__,
4182 attrwords << 2,
4183 (attrwords < nwords) ? '<' : '>',
4184 nwords << 2);
4185 return -EIO;
4186 }
4187 return 0;
4188 }
4189
4190 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4191 {
4192 __be32 *p;
4193
4194 p = xdr_inline_decode(xdr, 20);
4195 if (unlikely(!p))
4196 goto out_overflow;
4197 cinfo->atomic = be32_to_cpup(p++);
4198 p = xdr_decode_hyper(p, &cinfo->before);
4199 xdr_decode_hyper(p, &cinfo->after);
4200 return 0;
4201 out_overflow:
4202 print_overflow_msg(__func__, xdr);
4203 return -EIO;
4204 }
4205
4206 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4207 {
4208 __be32 *p;
4209 uint32_t supp, acc;
4210 int status;
4211
4212 status = decode_op_hdr(xdr, OP_ACCESS);
4213 if (status)
4214 return status;
4215 p = xdr_inline_decode(xdr, 8);
4216 if (unlikely(!p))
4217 goto out_overflow;
4218 supp = be32_to_cpup(p++);
4219 acc = be32_to_cpup(p);
4220 *supported = supp;
4221 *access = acc;
4222 return 0;
4223 out_overflow:
4224 print_overflow_msg(__func__, xdr);
4225 return -EIO;
4226 }
4227
4228 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4229 {
4230 __be32 *p;
4231
4232 p = xdr_inline_decode(xdr, len);
4233 if (likely(p)) {
4234 memcpy(buf, p, len);
4235 return 0;
4236 }
4237 print_overflow_msg(__func__, xdr);
4238 return -EIO;
4239 }
4240
4241 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4242 {
4243 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4244 }
4245
4246 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4247 {
4248 int status;
4249
4250 status = decode_op_hdr(xdr, OP_CLOSE);
4251 if (status != -EIO)
4252 nfs_increment_open_seqid(status, res->seqid);
4253 if (!status)
4254 status = decode_stateid(xdr, &res->stateid);
4255 return status;
4256 }
4257
4258 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4259 {
4260 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4261 }
4262
4263 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4264 {
4265 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4266 }
4267
4268 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4269 {
4270 int status;
4271
4272 status = decode_op_hdr(xdr, OP_COMMIT);
4273 if (!status)
4274 status = decode_write_verifier(xdr, &res->verf->verifier);
4275 return status;
4276 }
4277
4278 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4279 {
4280 __be32 *p;
4281 uint32_t bmlen;
4282 int status;
4283
4284 status = decode_op_hdr(xdr, OP_CREATE);
4285 if (status)
4286 return status;
4287 if ((status = decode_change_info(xdr, cinfo)))
4288 return status;
4289 p = xdr_inline_decode(xdr, 4);
4290 if (unlikely(!p))
4291 goto out_overflow;
4292 bmlen = be32_to_cpup(p);
4293 p = xdr_inline_decode(xdr, bmlen << 2);
4294 if (likely(p))
4295 return 0;
4296 out_overflow:
4297 print_overflow_msg(__func__, xdr);
4298 return -EIO;
4299 }
4300
4301 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
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 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4314 goto xdr_error;
4315 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4316 &res->fh_expire_type)) != 0)
4317 goto xdr_error;
4318 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4319 goto xdr_error;
4320 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4321 goto xdr_error;
4322 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4323 goto xdr_error;
4324 status = verify_attr_len(xdr, savep, attrlen);
4325 xdr_error:
4326 dprintk("%s: xdr returned %d!\n", __func__, -status);
4327 return status;
4328 }
4329
4330 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4331 {
4332 unsigned int savep;
4333 uint32_t attrlen, bitmap[3] = {0};
4334 int status;
4335
4336 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4337 goto xdr_error;
4338 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4339 goto xdr_error;
4340 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4341 goto xdr_error;
4342
4343 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4344 goto xdr_error;
4345 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4346 goto xdr_error;
4347 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4348 goto xdr_error;
4349 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4350 goto xdr_error;
4351 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4352 goto xdr_error;
4353 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4354 goto xdr_error;
4355
4356 status = verify_attr_len(xdr, savep, attrlen);
4357 xdr_error:
4358 dprintk("%s: xdr returned %d!\n", __func__, -status);
4359 return status;
4360 }
4361
4362 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4363 {
4364 unsigned int savep;
4365 uint32_t attrlen, bitmap[3] = {0};
4366 int status;
4367
4368 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4369 goto xdr_error;
4370 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4371 goto xdr_error;
4372 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4373 goto xdr_error;
4374
4375 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4376 goto xdr_error;
4377 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4378 goto xdr_error;
4379
4380 status = verify_attr_len(xdr, savep, attrlen);
4381 xdr_error:
4382 dprintk("%s: xdr returned %d!\n", __func__, -status);
4383 return status;
4384 }
4385
4386 static int decode_threshold_hint(struct xdr_stream *xdr,
4387 uint32_t *bitmap,
4388 uint64_t *res,
4389 uint32_t hint_bit)
4390 {
4391 __be32 *p;
4392
4393 *res = 0;
4394 if (likely(bitmap[0] & hint_bit)) {
4395 p = xdr_inline_decode(xdr, 8);
4396 if (unlikely(!p))
4397 goto out_overflow;
4398 xdr_decode_hyper(p, res);
4399 }
4400 return 0;
4401 out_overflow:
4402 print_overflow_msg(__func__, xdr);
4403 return -EIO;
4404 }
4405
4406 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4407 struct nfs4_threshold *res)
4408 {
4409 __be32 *p;
4410 unsigned int savep;
4411 uint32_t bitmap[3] = {0,}, attrlen;
4412 int status;
4413
4414 /* layout type */
4415 p = xdr_inline_decode(xdr, 4);
4416 if (unlikely(!p)) {
4417 print_overflow_msg(__func__, xdr);
4418 return -EIO;
4419 }
4420 res->l_type = be32_to_cpup(p);
4421
4422 /* thi_hintset bitmap */
4423 status = decode_attr_bitmap(xdr, bitmap);
4424 if (status < 0)
4425 goto xdr_error;
4426
4427 /* thi_hintlist length */
4428 status = decode_attr_length(xdr, &attrlen, &savep);
4429 if (status < 0)
4430 goto xdr_error;
4431 /* thi_hintlist */
4432 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4433 if (status < 0)
4434 goto xdr_error;
4435 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4436 if (status < 0)
4437 goto xdr_error;
4438 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4439 THRESHOLD_RD_IO);
4440 if (status < 0)
4441 goto xdr_error;
4442 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4443 THRESHOLD_WR_IO);
4444 if (status < 0)
4445 goto xdr_error;
4446
4447 status = verify_attr_len(xdr, savep, attrlen);
4448 res->bm = bitmap[0];
4449
4450 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4451 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4452 res->wr_io_sz);
4453 xdr_error:
4454 dprintk("%s ret=%d!\n", __func__, status);
4455 return status;
4456 }
4457
4458 /*
4459 * Thresholds on pNFS direct I/O vrs MDS I/O
4460 */
4461 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4462 uint32_t *bitmap,
4463 struct nfs4_threshold *res)
4464 {
4465 __be32 *p;
4466 int status = 0;
4467 uint32_t num;
4468
4469 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4470 return -EIO;
4471 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4472 /* Did the server return an unrequested attribute? */
4473 if (unlikely(res == NULL))
4474 return -EREMOTEIO;
4475 p = xdr_inline_decode(xdr, 4);
4476 if (unlikely(!p))
4477 goto out_overflow;
4478 num = be32_to_cpup(p);
4479 if (num == 0)
4480 return 0;
4481 if (num > 1)
4482 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4483 "drivers per filesystem not supported\n",
4484 __func__);
4485
4486 status = decode_first_threshold_item4(xdr, res);
4487 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4488 }
4489 return status;
4490 out_overflow:
4491 print_overflow_msg(__func__, xdr);
4492 return -EIO;
4493 }
4494
4495 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4496 struct nfs_fattr *fattr, struct nfs_fh *fh,
4497 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4498 const struct nfs_server *server)
4499 {
4500 int status;
4501 umode_t fmode = 0;
4502 uint32_t type;
4503 int32_t err;
4504
4505 status = decode_attr_type(xdr, bitmap, &type);
4506 if (status < 0)
4507 goto xdr_error;
4508 fattr->mode = 0;
4509 if (status != 0) {
4510 fattr->mode |= nfs_type2fmt[type];
4511 fattr->valid |= status;
4512 }
4513
4514 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4515 if (status < 0)
4516 goto xdr_error;
4517 fattr->valid |= status;
4518
4519 status = decode_attr_size(xdr, bitmap, &fattr->size);
4520 if (status < 0)
4521 goto xdr_error;
4522 fattr->valid |= status;
4523
4524 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4525 if (status < 0)
4526 goto xdr_error;
4527 fattr->valid |= status;
4528
4529 err = 0;
4530 status = decode_attr_error(xdr, bitmap, &err);
4531 if (status < 0)
4532 goto xdr_error;
4533
4534 status = decode_attr_filehandle(xdr, bitmap, fh);
4535 if (status < 0)
4536 goto xdr_error;
4537
4538 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4539 if (status < 0)
4540 goto xdr_error;
4541 fattr->valid |= status;
4542
4543 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4544 if (status < 0)
4545 goto xdr_error;
4546 fattr->valid |= status;
4547
4548 status = decode_attr_mode(xdr, bitmap, &fmode);
4549 if (status < 0)
4550 goto xdr_error;
4551 if (status != 0) {
4552 fattr->mode |= fmode;
4553 fattr->valid |= status;
4554 }
4555
4556 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4557 if (status < 0)
4558 goto xdr_error;
4559 fattr->valid |= status;
4560
4561 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4562 if (status < 0)
4563 goto xdr_error;
4564 fattr->valid |= status;
4565
4566 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4567 if (status < 0)
4568 goto xdr_error;
4569 fattr->valid |= status;
4570
4571 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4572 if (status < 0)
4573 goto xdr_error;
4574 fattr->valid |= status;
4575
4576 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4577 if (status < 0)
4578 goto xdr_error;
4579 fattr->valid |= status;
4580
4581 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4582 if (status < 0)
4583 goto xdr_error;
4584 fattr->valid |= status;
4585
4586 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4587 if (status < 0)
4588 goto xdr_error;
4589 fattr->valid |= status;
4590
4591 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4592 if (status < 0)
4593 goto xdr_error;
4594 fattr->valid |= status;
4595
4596 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4597 if (status < 0)
4598 goto xdr_error;
4599 fattr->valid |= status;
4600
4601 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4602 if (status < 0)
4603 goto xdr_error;
4604
4605 if (label) {
4606 status = decode_attr_security_label(xdr, bitmap, label);
4607 if (status < 0)
4608 goto xdr_error;
4609 fattr->valid |= status;
4610 }
4611
4612 xdr_error:
4613 dprintk("%s: xdr returned %d\n", __func__, -status);
4614 return status;
4615 }
4616
4617 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4618 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4619 struct nfs4_label *label, const struct nfs_server *server)
4620 {
4621 unsigned int savep;
4622 uint32_t attrlen,
4623 bitmap[3] = {0};
4624 int status;
4625
4626 status = decode_op_hdr(xdr, OP_GETATTR);
4627 if (status < 0)
4628 goto xdr_error;
4629
4630 status = decode_attr_bitmap(xdr, bitmap);
4631 if (status < 0)
4632 goto xdr_error;
4633
4634 status = decode_attr_length(xdr, &attrlen, &savep);
4635 if (status < 0)
4636 goto xdr_error;
4637
4638 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4639 label, server);
4640 if (status < 0)
4641 goto xdr_error;
4642
4643 status = verify_attr_len(xdr, savep, attrlen);
4644 xdr_error:
4645 dprintk("%s: xdr returned %d\n", __func__, -status);
4646 return status;
4647 }
4648
4649 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4650 struct nfs4_label *label, const struct nfs_server *server)
4651 {
4652 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4653 }
4654
4655 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4656 const struct nfs_server *server)
4657 {
4658 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4659 }
4660
4661 /*
4662 * Decode potentially multiple layout types. Currently we only support
4663 * one layout driver per file system.
4664 */
4665 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4666 uint32_t *layouttype)
4667 {
4668 __be32 *p;
4669 int num;
4670
4671 p = xdr_inline_decode(xdr, 4);
4672 if (unlikely(!p))
4673 goto out_overflow;
4674 num = be32_to_cpup(p);
4675
4676 /* pNFS is not supported by the underlying file system */
4677 if (num == 0) {
4678 *layouttype = 0;
4679 return 0;
4680 }
4681 if (num > 1)
4682 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4683 "drivers per filesystem not supported\n", __func__);
4684
4685 /* Decode and set first layout type, move xdr->p past unused types */
4686 p = xdr_inline_decode(xdr, num * 4);
4687 if (unlikely(!p))
4688 goto out_overflow;
4689 *layouttype = be32_to_cpup(p);
4690 return 0;
4691 out_overflow:
4692 print_overflow_msg(__func__, xdr);
4693 return -EIO;
4694 }
4695
4696 /*
4697 * The type of file system exported.
4698 * Note we must ensure that layouttype is set in any non-error case.
4699 */
4700 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4701 uint32_t *layouttype)
4702 {
4703 int status = 0;
4704
4705 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4706 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4707 return -EIO;
4708 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4709 status = decode_first_pnfs_layout_type(xdr, layouttype);
4710 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4711 } else
4712 *layouttype = 0;
4713 return status;
4714 }
4715
4716 /*
4717 * The prefered block size for layout directed io
4718 */
4719 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4720 uint32_t *res)
4721 {
4722 __be32 *p;
4723
4724 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4725 *res = 0;
4726 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4727 p = xdr_inline_decode(xdr, 4);
4728 if (unlikely(!p)) {
4729 print_overflow_msg(__func__, xdr);
4730 return -EIO;
4731 }
4732 *res = be32_to_cpup(p);
4733 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4734 }
4735 return 0;
4736 }
4737
4738 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4739 {
4740 unsigned int savep;
4741 uint32_t attrlen, bitmap[3];
4742 int status;
4743
4744 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4745 goto xdr_error;
4746 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4747 goto xdr_error;
4748 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4749 goto xdr_error;
4750
4751 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4752
4753 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4754 goto xdr_error;
4755 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4756 goto xdr_error;
4757 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4758 goto xdr_error;
4759 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4760 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4761 goto xdr_error;
4762 fsinfo->wtpref = fsinfo->wtmax;
4763 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4764 if (status != 0)
4765 goto xdr_error;
4766 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4767 if (status != 0)
4768 goto xdr_error;
4769 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4770 if (status)
4771 goto xdr_error;
4772
4773 status = verify_attr_len(xdr, savep, attrlen);
4774 xdr_error:
4775 dprintk("%s: xdr returned %d!\n", __func__, -status);
4776 return status;
4777 }
4778
4779 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4780 {
4781 __be32 *p;
4782 uint32_t len;
4783 int status;
4784
4785 /* Zero handle first to allow comparisons */
4786 memset(fh, 0, sizeof(*fh));
4787
4788 status = decode_op_hdr(xdr, OP_GETFH);
4789 if (status)
4790 return status;
4791
4792 p = xdr_inline_decode(xdr, 4);
4793 if (unlikely(!p))
4794 goto out_overflow;
4795 len = be32_to_cpup(p);
4796 if (len > NFS4_FHSIZE)
4797 return -EIO;
4798 fh->size = len;
4799 p = xdr_inline_decode(xdr, len);
4800 if (unlikely(!p))
4801 goto out_overflow;
4802 memcpy(fh->data, p, len);
4803 return 0;
4804 out_overflow:
4805 print_overflow_msg(__func__, xdr);
4806 return -EIO;
4807 }
4808
4809 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4810 {
4811 int status;
4812
4813 status = decode_op_hdr(xdr, OP_LINK);
4814 if (status)
4815 return status;
4816 return decode_change_info(xdr, cinfo);
4817 }
4818
4819 /*
4820 * We create the owner, so we know a proper owner.id length is 4.
4821 */
4822 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4823 {
4824 uint64_t offset, length, clientid;
4825 __be32 *p;
4826 uint32_t namelen, type;
4827
4828 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4829 if (unlikely(!p))
4830 goto out_overflow;
4831 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4832 p = xdr_decode_hyper(p, &length);
4833 type = be32_to_cpup(p++); /* 4 byte read */
4834 if (fl != NULL) { /* manipulate file lock */
4835 fl->fl_start = (loff_t)offset;
4836 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4837 if (length == ~(uint64_t)0)
4838 fl->fl_end = OFFSET_MAX;
4839 fl->fl_type = F_WRLCK;
4840 if (type & 1)
4841 fl->fl_type = F_RDLCK;
4842 fl->fl_pid = 0;
4843 }
4844 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4845 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4846 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4847 if (likely(p))
4848 return -NFS4ERR_DENIED;
4849 out_overflow:
4850 print_overflow_msg(__func__, xdr);
4851 return -EIO;
4852 }
4853
4854 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4855 {
4856 int status;
4857
4858 status = decode_op_hdr(xdr, OP_LOCK);
4859 if (status == -EIO)
4860 goto out;
4861 if (status == 0) {
4862 status = decode_stateid(xdr, &res->stateid);
4863 if (unlikely(status))
4864 goto out;
4865 } else if (status == -NFS4ERR_DENIED)
4866 status = decode_lock_denied(xdr, NULL);
4867 if (res->open_seqid != NULL)
4868 nfs_increment_open_seqid(status, res->open_seqid);
4869 nfs_increment_lock_seqid(status, res->lock_seqid);
4870 out:
4871 return status;
4872 }
4873
4874 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4875 {
4876 int status;
4877 status = decode_op_hdr(xdr, OP_LOCKT);
4878 if (status == -NFS4ERR_DENIED)
4879 return decode_lock_denied(xdr, res->denied);
4880 return status;
4881 }
4882
4883 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4884 {
4885 int status;
4886
4887 status = decode_op_hdr(xdr, OP_LOCKU);
4888 if (status != -EIO)
4889 nfs_increment_lock_seqid(status, res->seqid);
4890 if (status == 0)
4891 status = decode_stateid(xdr, &res->stateid);
4892 return status;
4893 }
4894
4895 static int decode_release_lockowner(struct xdr_stream *xdr)
4896 {
4897 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4898 }
4899
4900 static int decode_lookup(struct xdr_stream *xdr)
4901 {
4902 return decode_op_hdr(xdr, OP_LOOKUP);
4903 }
4904
4905 /* This is too sick! */
4906 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4907 {
4908 __be32 *p;
4909 uint32_t limit_type, nblocks, blocksize;
4910
4911 p = xdr_inline_decode(xdr, 12);
4912 if (unlikely(!p))
4913 goto out_overflow;
4914 limit_type = be32_to_cpup(p++);
4915 switch (limit_type) {
4916 case 1:
4917 xdr_decode_hyper(p, maxsize);
4918 break;
4919 case 2:
4920 nblocks = be32_to_cpup(p++);
4921 blocksize = be32_to_cpup(p);
4922 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4923 }
4924 return 0;
4925 out_overflow:
4926 print_overflow_msg(__func__, xdr);
4927 return -EIO;
4928 }
4929
4930 static int decode_rw_delegation(struct xdr_stream *xdr,
4931 uint32_t delegation_type,
4932 struct nfs_openres *res)
4933 {
4934 __be32 *p;
4935 int status;
4936
4937 status = decode_stateid(xdr, &res->delegation);
4938 if (unlikely(status))
4939 return status;
4940 p = xdr_inline_decode(xdr, 4);
4941 if (unlikely(!p))
4942 goto out_overflow;
4943 res->do_recall = be32_to_cpup(p);
4944
4945 switch (delegation_type) {
4946 case NFS4_OPEN_DELEGATE_READ:
4947 res->delegation_type = FMODE_READ;
4948 break;
4949 case NFS4_OPEN_DELEGATE_WRITE:
4950 res->delegation_type = FMODE_WRITE|FMODE_READ;
4951 if (decode_space_limit(xdr, &res->maxsize) < 0)
4952 return -EIO;
4953 }
4954 return decode_ace(xdr, NULL, res->server->nfs_client);
4955 out_overflow:
4956 print_overflow_msg(__func__, xdr);
4957 return -EIO;
4958 }
4959
4960 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4961 {
4962 __be32 *p;
4963 uint32_t why_no_delegation;
4964
4965 p = xdr_inline_decode(xdr, 4);
4966 if (unlikely(!p))
4967 goto out_overflow;
4968 why_no_delegation = be32_to_cpup(p);
4969 switch (why_no_delegation) {
4970 case WND4_CONTENTION:
4971 case WND4_RESOURCE:
4972 xdr_inline_decode(xdr, 4);
4973 /* Ignore for now */
4974 }
4975 return 0;
4976 out_overflow:
4977 print_overflow_msg(__func__, xdr);
4978 return -EIO;
4979 }
4980
4981 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4982 {
4983 __be32 *p;
4984 uint32_t delegation_type;
4985
4986 p = xdr_inline_decode(xdr, 4);
4987 if (unlikely(!p))
4988 goto out_overflow;
4989 delegation_type = be32_to_cpup(p);
4990 res->delegation_type = 0;
4991 switch (delegation_type) {
4992 case NFS4_OPEN_DELEGATE_NONE:
4993 return 0;
4994 case NFS4_OPEN_DELEGATE_READ:
4995 case NFS4_OPEN_DELEGATE_WRITE:
4996 return decode_rw_delegation(xdr, delegation_type, res);
4997 case NFS4_OPEN_DELEGATE_NONE_EXT:
4998 return decode_no_delegation(xdr, res);
4999 }
5000 return -EIO;
5001 out_overflow:
5002 print_overflow_msg(__func__, xdr);
5003 return -EIO;
5004 }
5005
5006 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5007 {
5008 __be32 *p;
5009 uint32_t savewords, bmlen, i;
5010 int status;
5011
5012 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5013 return status;
5014 nfs_increment_open_seqid(status, res->seqid);
5015 if (status)
5016 return status;
5017 status = decode_stateid(xdr, &res->stateid);
5018 if (unlikely(status))
5019 return status;
5020
5021 decode_change_info(xdr, &res->cinfo);
5022
5023 p = xdr_inline_decode(xdr, 8);
5024 if (unlikely(!p))
5025 goto out_overflow;
5026 res->rflags = be32_to_cpup(p++);
5027 bmlen = be32_to_cpup(p);
5028 if (bmlen > 10)
5029 goto xdr_error;
5030
5031 p = xdr_inline_decode(xdr, bmlen << 2);
5032 if (unlikely(!p))
5033 goto out_overflow;
5034 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5035 for (i = 0; i < savewords; ++i)
5036 res->attrset[i] = be32_to_cpup(p++);
5037 for (; i < NFS4_BITMAP_SIZE; i++)
5038 res->attrset[i] = 0;
5039
5040 return decode_delegation(xdr, res);
5041 xdr_error:
5042 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5043 return -EIO;
5044 out_overflow:
5045 print_overflow_msg(__func__, xdr);
5046 return -EIO;
5047 }
5048
5049 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5050 {
5051 int status;
5052
5053 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5054 if (status != -EIO)
5055 nfs_increment_open_seqid(status, res->seqid);
5056 if (!status)
5057 status = decode_stateid(xdr, &res->stateid);
5058 return status;
5059 }
5060
5061 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5062 {
5063 int status;
5064
5065 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5066 if (status != -EIO)
5067 nfs_increment_open_seqid(status, res->seqid);
5068 if (!status)
5069 status = decode_stateid(xdr, &res->stateid);
5070 return status;
5071 }
5072
5073 static int decode_putfh(struct xdr_stream *xdr)
5074 {
5075 return decode_op_hdr(xdr, OP_PUTFH);
5076 }
5077
5078 static int decode_putrootfh(struct xdr_stream *xdr)
5079 {
5080 return decode_op_hdr(xdr, OP_PUTROOTFH);
5081 }
5082
5083 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5084 struct nfs_pgio_res *res)
5085 {
5086 __be32 *p;
5087 uint32_t count, eof, recvd;
5088 int status;
5089
5090 status = decode_op_hdr(xdr, OP_READ);
5091 if (status)
5092 return status;
5093 p = xdr_inline_decode(xdr, 8);
5094 if (unlikely(!p))
5095 goto out_overflow;
5096 eof = be32_to_cpup(p++);
5097 count = be32_to_cpup(p);
5098 recvd = xdr_read_pages(xdr, count);
5099 if (count > recvd) {
5100 dprintk("NFS: server cheating in read reply: "
5101 "count %u > recvd %u\n", count, recvd);
5102 count = recvd;
5103 eof = 0;
5104 }
5105 res->eof = eof;
5106 res->count = count;
5107 return 0;
5108 out_overflow:
5109 print_overflow_msg(__func__, xdr);
5110 return -EIO;
5111 }
5112
5113 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5114 {
5115 int status;
5116 __be32 verf[2];
5117
5118 status = decode_op_hdr(xdr, OP_READDIR);
5119 if (!status)
5120 status = decode_verifier(xdr, readdir->verifier.data);
5121 if (unlikely(status))
5122 return status;
5123 memcpy(verf, readdir->verifier.data, sizeof(verf));
5124 dprintk("%s: verifier = %08x:%08x\n",
5125 __func__, verf[0], verf[1]);
5126 return xdr_read_pages(xdr, xdr->buf->page_len);
5127 }
5128
5129 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5130 {
5131 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5132 u32 len, recvd;
5133 __be32 *p;
5134 int status;
5135
5136 status = decode_op_hdr(xdr, OP_READLINK);
5137 if (status)
5138 return status;
5139
5140 /* Convert length of symlink */
5141 p = xdr_inline_decode(xdr, 4);
5142 if (unlikely(!p))
5143 goto out_overflow;
5144 len = be32_to_cpup(p);
5145 if (len >= rcvbuf->page_len || len <= 0) {
5146 dprintk("nfs: server returned giant symlink!\n");
5147 return -ENAMETOOLONG;
5148 }
5149 recvd = xdr_read_pages(xdr, len);
5150 if (recvd < len) {
5151 dprintk("NFS: server cheating in readlink reply: "
5152 "count %u > recvd %u\n", len, recvd);
5153 return -EIO;
5154 }
5155 /*
5156 * The XDR encode routine has set things up so that
5157 * the link text will be copied directly into the
5158 * buffer. We just have to do overflow-checking,
5159 * and and null-terminate the text (the VFS expects
5160 * null-termination).
5161 */
5162 xdr_terminate_string(rcvbuf, len);
5163 return 0;
5164 out_overflow:
5165 print_overflow_msg(__func__, xdr);
5166 return -EIO;
5167 }
5168
5169 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5170 {
5171 int status;
5172
5173 status = decode_op_hdr(xdr, OP_REMOVE);
5174 if (status)
5175 goto out;
5176 status = decode_change_info(xdr, cinfo);
5177 out:
5178 return status;
5179 }
5180
5181 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5182 struct nfs4_change_info *new_cinfo)
5183 {
5184 int status;
5185
5186 status = decode_op_hdr(xdr, OP_RENAME);
5187 if (status)
5188 goto out;
5189 if ((status = decode_change_info(xdr, old_cinfo)))
5190 goto out;
5191 status = decode_change_info(xdr, new_cinfo);
5192 out:
5193 return status;
5194 }
5195
5196 static int decode_renew(struct xdr_stream *xdr)
5197 {
5198 return decode_op_hdr(xdr, OP_RENEW);
5199 }
5200
5201 static int
5202 decode_restorefh(struct xdr_stream *xdr)
5203 {
5204 return decode_op_hdr(xdr, OP_RESTOREFH);
5205 }
5206
5207 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5208 struct nfs_getaclres *res)
5209 {
5210 unsigned int savep;
5211 uint32_t attrlen,
5212 bitmap[3] = {0};
5213 int status;
5214 unsigned int pg_offset;
5215
5216 res->acl_len = 0;
5217 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5218 goto out;
5219
5220 xdr_enter_page(xdr, xdr->buf->page_len);
5221
5222 /* Calculate the offset of the page data */
5223 pg_offset = xdr->buf->head[0].iov_len;
5224
5225 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5226 goto out;
5227 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5228 goto out;
5229
5230 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5231 return -EIO;
5232 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5233
5234 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5235 * are stored with the acl data to handle the problem of
5236 * variable length bitmaps.*/
5237 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5238 res->acl_len = attrlen;
5239
5240 /* Check for receive buffer overflow */
5241 if (res->acl_len > (xdr->nwords << 2) ||
5242 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5243 res->acl_flags |= NFS4_ACL_TRUNC;
5244 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5245 attrlen, xdr->nwords << 2);
5246 }
5247 } else
5248 status = -EOPNOTSUPP;
5249
5250 out:
5251 return status;
5252 }
5253
5254 static int
5255 decode_savefh(struct xdr_stream *xdr)
5256 {
5257 return decode_op_hdr(xdr, OP_SAVEFH);
5258 }
5259
5260 static int decode_setattr(struct xdr_stream *xdr)
5261 {
5262 __be32 *p;
5263 uint32_t bmlen;
5264 int status;
5265
5266 status = decode_op_hdr(xdr, OP_SETATTR);
5267 if (status)
5268 return status;
5269 p = xdr_inline_decode(xdr, 4);
5270 if (unlikely(!p))
5271 goto out_overflow;
5272 bmlen = be32_to_cpup(p);
5273 p = xdr_inline_decode(xdr, bmlen << 2);
5274 if (likely(p))
5275 return 0;
5276 out_overflow:
5277 print_overflow_msg(__func__, xdr);
5278 return -EIO;
5279 }
5280
5281 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5282 {
5283 __be32 *p;
5284 uint32_t opnum;
5285 int32_t nfserr;
5286
5287 p = xdr_inline_decode(xdr, 8);
5288 if (unlikely(!p))
5289 goto out_overflow;
5290 opnum = be32_to_cpup(p++);
5291 if (opnum != OP_SETCLIENTID) {
5292 dprintk("nfs: decode_setclientid: Server returned operation"
5293 " %d\n", opnum);
5294 return -EIO;
5295 }
5296 nfserr = be32_to_cpup(p);
5297 if (nfserr == NFS_OK) {
5298 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5299 if (unlikely(!p))
5300 goto out_overflow;
5301 p = xdr_decode_hyper(p, &res->clientid);
5302 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5303 } else if (nfserr == NFSERR_CLID_INUSE) {
5304 uint32_t len;
5305
5306 /* skip netid string */
5307 p = xdr_inline_decode(xdr, 4);
5308 if (unlikely(!p))
5309 goto out_overflow;
5310 len = be32_to_cpup(p);
5311 p = xdr_inline_decode(xdr, len);
5312 if (unlikely(!p))
5313 goto out_overflow;
5314
5315 /* skip uaddr string */
5316 p = xdr_inline_decode(xdr, 4);
5317 if (unlikely(!p))
5318 goto out_overflow;
5319 len = be32_to_cpup(p);
5320 p = xdr_inline_decode(xdr, len);
5321 if (unlikely(!p))
5322 goto out_overflow;
5323 return -NFSERR_CLID_INUSE;
5324 } else
5325 return nfs4_stat_to_errno(nfserr);
5326
5327 return 0;
5328 out_overflow:
5329 print_overflow_msg(__func__, xdr);
5330 return -EIO;
5331 }
5332
5333 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5334 {
5335 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5336 }
5337
5338 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5339 {
5340 __be32 *p;
5341 int status;
5342
5343 status = decode_op_hdr(xdr, OP_WRITE);
5344 if (status)
5345 return status;
5346
5347 p = xdr_inline_decode(xdr, 8);
5348 if (unlikely(!p))
5349 goto out_overflow;
5350 res->count = be32_to_cpup(p++);
5351 res->verf->committed = be32_to_cpup(p++);
5352 return decode_write_verifier(xdr, &res->verf->verifier);
5353 out_overflow:
5354 print_overflow_msg(__func__, xdr);
5355 return -EIO;
5356 }
5357
5358 static int decode_delegreturn(struct xdr_stream *xdr)
5359 {
5360 return decode_op_hdr(xdr, OP_DELEGRETURN);
5361 }
5362
5363 static int decode_secinfo_gss(struct xdr_stream *xdr,
5364 struct nfs4_secinfo4 *flavor)
5365 {
5366 u32 oid_len;
5367 __be32 *p;
5368
5369 p = xdr_inline_decode(xdr, 4);
5370 if (unlikely(!p))
5371 goto out_overflow;
5372 oid_len = be32_to_cpup(p);
5373 if (oid_len > GSS_OID_MAX_LEN)
5374 goto out_err;
5375
5376 p = xdr_inline_decode(xdr, oid_len);
5377 if (unlikely(!p))
5378 goto out_overflow;
5379 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5380 flavor->flavor_info.oid.len = oid_len;
5381
5382 p = xdr_inline_decode(xdr, 8);
5383 if (unlikely(!p))
5384 goto out_overflow;
5385 flavor->flavor_info.qop = be32_to_cpup(p++);
5386 flavor->flavor_info.service = be32_to_cpup(p);
5387
5388 return 0;
5389
5390 out_overflow:
5391 print_overflow_msg(__func__, xdr);
5392 return -EIO;
5393 out_err:
5394 return -EINVAL;
5395 }
5396
5397 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5398 {
5399 struct nfs4_secinfo4 *sec_flavor;
5400 unsigned int i, num_flavors;
5401 int status;
5402 __be32 *p;
5403
5404 p = xdr_inline_decode(xdr, 4);
5405 if (unlikely(!p))
5406 goto out_overflow;
5407
5408 res->flavors->num_flavors = 0;
5409 num_flavors = be32_to_cpup(p);
5410
5411 for (i = 0; i < num_flavors; i++) {
5412 sec_flavor = &res->flavors->flavors[i];
5413 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5414 break;
5415
5416 p = xdr_inline_decode(xdr, 4);
5417 if (unlikely(!p))
5418 goto out_overflow;
5419 sec_flavor->flavor = be32_to_cpup(p);
5420
5421 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5422 status = decode_secinfo_gss(xdr, sec_flavor);
5423 if (status)
5424 goto out;
5425 }
5426 res->flavors->num_flavors++;
5427 }
5428
5429 status = 0;
5430 out:
5431 return status;
5432 out_overflow:
5433 print_overflow_msg(__func__, xdr);
5434 return -EIO;
5435 }
5436
5437 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5438 {
5439 int status = decode_op_hdr(xdr, OP_SECINFO);
5440 if (status)
5441 return status;
5442 return decode_secinfo_common(xdr, res);
5443 }
5444
5445 #if defined(CONFIG_NFS_V4_1)
5446 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5447 {
5448 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5449 if (status)
5450 return status;
5451 return decode_secinfo_common(xdr, res);
5452 }
5453
5454 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5455 {
5456 __be32 *p;
5457 uint32_t bitmap_words;
5458 unsigned int i;
5459
5460 p = xdr_inline_decode(xdr, 4);
5461 bitmap_words = be32_to_cpup(p++);
5462 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5463 return -EIO;
5464 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5465 for (i = 0; i < bitmap_words; i++)
5466 op_map->u.words[i] = be32_to_cpup(p++);
5467
5468 return 0;
5469 }
5470
5471 static int decode_exchange_id(struct xdr_stream *xdr,
5472 struct nfs41_exchange_id_res *res)
5473 {
5474 __be32 *p;
5475 uint32_t dummy;
5476 char *dummy_str;
5477 int status;
5478 uint32_t impl_id_count;
5479
5480 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5481 if (status)
5482 return status;
5483
5484 p = xdr_inline_decode(xdr, 8);
5485 if (unlikely(!p))
5486 goto out_overflow;
5487 xdr_decode_hyper(p, &res->clientid);
5488 p = xdr_inline_decode(xdr, 12);
5489 if (unlikely(!p))
5490 goto out_overflow;
5491 res->seqid = be32_to_cpup(p++);
5492 res->flags = be32_to_cpup(p++);
5493
5494 res->state_protect.how = be32_to_cpup(p);
5495 switch (res->state_protect.how) {
5496 case SP4_NONE:
5497 break;
5498 case SP4_MACH_CRED:
5499 status = decode_op_map(xdr, &res->state_protect.enforce);
5500 if (status)
5501 return status;
5502 status = decode_op_map(xdr, &res->state_protect.allow);
5503 if (status)
5504 return status;
5505 break;
5506 default:
5507 WARN_ON_ONCE(1);
5508 return -EIO;
5509 }
5510
5511 /* server_owner4.so_minor_id */
5512 p = xdr_inline_decode(xdr, 8);
5513 if (unlikely(!p))
5514 goto out_overflow;
5515 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5516
5517 /* server_owner4.so_major_id */
5518 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5519 if (unlikely(status))
5520 return status;
5521 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5522 return -EIO;
5523 memcpy(res->server_owner->major_id, dummy_str, dummy);
5524 res->server_owner->major_id_sz = dummy;
5525
5526 /* server_scope4 */
5527 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5528 if (unlikely(status))
5529 return status;
5530 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5531 return -EIO;
5532 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5533 res->server_scope->server_scope_sz = dummy;
5534
5535 /* Implementation Id */
5536 p = xdr_inline_decode(xdr, 4);
5537 if (unlikely(!p))
5538 goto out_overflow;
5539 impl_id_count = be32_to_cpup(p++);
5540
5541 if (impl_id_count) {
5542 /* nii_domain */
5543 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5544 if (unlikely(status))
5545 return status;
5546 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5547 return -EIO;
5548 memcpy(res->impl_id->domain, dummy_str, dummy);
5549
5550 /* nii_name */
5551 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5552 if (unlikely(status))
5553 return status;
5554 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5555 return -EIO;
5556 memcpy(res->impl_id->name, dummy_str, dummy);
5557
5558 /* nii_date */
5559 p = xdr_inline_decode(xdr, 12);
5560 if (unlikely(!p))
5561 goto out_overflow;
5562 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5563 res->impl_id->date.nseconds = be32_to_cpup(p);
5564
5565 /* if there's more than one entry, ignore the rest */
5566 }
5567 return 0;
5568 out_overflow:
5569 print_overflow_msg(__func__, xdr);
5570 return -EIO;
5571 }
5572
5573 static int decode_chan_attrs(struct xdr_stream *xdr,
5574 struct nfs4_channel_attrs *attrs)
5575 {
5576 __be32 *p;
5577 u32 nr_attrs, val;
5578
5579 p = xdr_inline_decode(xdr, 28);
5580 if (unlikely(!p))
5581 goto out_overflow;
5582 val = be32_to_cpup(p++); /* headerpadsz */
5583 if (val)
5584 return -EINVAL; /* no support for header padding yet */
5585 attrs->max_rqst_sz = be32_to_cpup(p++);
5586 attrs->max_resp_sz = be32_to_cpup(p++);
5587 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5588 attrs->max_ops = be32_to_cpup(p++);
5589 attrs->max_reqs = be32_to_cpup(p++);
5590 nr_attrs = be32_to_cpup(p);
5591 if (unlikely(nr_attrs > 1)) {
5592 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5593 "count %u\n", __func__, nr_attrs);
5594 return -EINVAL;
5595 }
5596 if (nr_attrs == 1) {
5597 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5598 if (unlikely(!p))
5599 goto out_overflow;
5600 }
5601 return 0;
5602 out_overflow:
5603 print_overflow_msg(__func__, xdr);
5604 return -EIO;
5605 }
5606
5607 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5608 {
5609 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5610 }
5611
5612 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5613 struct nfs41_bind_conn_to_session_res *res)
5614 {
5615 __be32 *p;
5616 int status;
5617
5618 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5619 if (!status)
5620 status = decode_sessionid(xdr, &res->sessionid);
5621 if (unlikely(status))
5622 return status;
5623
5624 /* dir flags, rdma mode bool */
5625 p = xdr_inline_decode(xdr, 8);
5626 if (unlikely(!p))
5627 goto out_overflow;
5628
5629 res->dir = be32_to_cpup(p++);
5630 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5631 return -EIO;
5632 if (be32_to_cpup(p) == 0)
5633 res->use_conn_in_rdma_mode = false;
5634 else
5635 res->use_conn_in_rdma_mode = true;
5636
5637 return 0;
5638 out_overflow:
5639 print_overflow_msg(__func__, xdr);
5640 return -EIO;
5641 }
5642
5643 static int decode_create_session(struct xdr_stream *xdr,
5644 struct nfs41_create_session_res *res)
5645 {
5646 __be32 *p;
5647 int status;
5648
5649 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5650 if (!status)
5651 status = decode_sessionid(xdr, &res->sessionid);
5652 if (unlikely(status))
5653 return status;
5654
5655 /* seqid, flags */
5656 p = xdr_inline_decode(xdr, 8);
5657 if (unlikely(!p))
5658 goto out_overflow;
5659 res->seqid = be32_to_cpup(p++);
5660 res->flags = be32_to_cpup(p);
5661
5662 /* Channel attributes */
5663 status = decode_chan_attrs(xdr, &res->fc_attrs);
5664 if (!status)
5665 status = decode_chan_attrs(xdr, &res->bc_attrs);
5666 return status;
5667 out_overflow:
5668 print_overflow_msg(__func__, xdr);
5669 return -EIO;
5670 }
5671
5672 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5673 {
5674 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5675 }
5676
5677 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5678 {
5679 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5680 }
5681
5682 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5683 {
5684 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5685 }
5686 #endif /* CONFIG_NFS_V4_1 */
5687
5688 static int decode_sequence(struct xdr_stream *xdr,
5689 struct nfs4_sequence_res *res,
5690 struct rpc_rqst *rqstp)
5691 {
5692 #if defined(CONFIG_NFS_V4_1)
5693 struct nfs4_session *session;
5694 struct nfs4_sessionid id;
5695 u32 dummy;
5696 int status;
5697 __be32 *p;
5698
5699 if (res->sr_slot == NULL)
5700 return 0;
5701 if (!res->sr_slot->table->session)
5702 return 0;
5703
5704 status = decode_op_hdr(xdr, OP_SEQUENCE);
5705 if (!status)
5706 status = decode_sessionid(xdr, &id);
5707 if (unlikely(status))
5708 goto out_err;
5709
5710 /*
5711 * If the server returns different values for sessionID, slotID or
5712 * sequence number, the server is looney tunes.
5713 */
5714 status = -EREMOTEIO;
5715 session = res->sr_slot->table->session;
5716
5717 if (memcmp(id.data, session->sess_id.data,
5718 NFS4_MAX_SESSIONID_LEN)) {
5719 dprintk("%s Invalid session id\n", __func__);
5720 goto out_err;
5721 }
5722
5723 p = xdr_inline_decode(xdr, 20);
5724 if (unlikely(!p))
5725 goto out_overflow;
5726
5727 /* seqid */
5728 dummy = be32_to_cpup(p++);
5729 if (dummy != res->sr_slot->seq_nr) {
5730 dprintk("%s Invalid sequence number\n", __func__);
5731 goto out_err;
5732 }
5733 /* slot id */
5734 dummy = be32_to_cpup(p++);
5735 if (dummy != res->sr_slot->slot_nr) {
5736 dprintk("%s Invalid slot id\n", __func__);
5737 goto out_err;
5738 }
5739 /* highest slot id */
5740 res->sr_highest_slotid = be32_to_cpup(p++);
5741 /* target highest slot id */
5742 res->sr_target_highest_slotid = be32_to_cpup(p++);
5743 /* result flags */
5744 res->sr_status_flags = be32_to_cpup(p);
5745 status = 0;
5746 out_err:
5747 res->sr_status = status;
5748 return status;
5749 out_overflow:
5750 print_overflow_msg(__func__, xdr);
5751 status = -EIO;
5752 goto out_err;
5753 #else /* CONFIG_NFS_V4_1 */
5754 return 0;
5755 #endif /* CONFIG_NFS_V4_1 */
5756 }
5757
5758 #if defined(CONFIG_NFS_V4_1)
5759 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5760 struct nfs4_getdeviceinfo_res *res)
5761 {
5762 struct pnfs_device *pdev = res->pdev;
5763 __be32 *p;
5764 uint32_t len, type;
5765 int status;
5766
5767 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5768 if (status) {
5769 if (status == -ETOOSMALL) {
5770 p = xdr_inline_decode(xdr, 4);
5771 if (unlikely(!p))
5772 goto out_overflow;
5773 pdev->mincount = be32_to_cpup(p);
5774 dprintk("%s: Min count too small. mincnt = %u\n",
5775 __func__, pdev->mincount);
5776 }
5777 return status;
5778 }
5779
5780 p = xdr_inline_decode(xdr, 8);
5781 if (unlikely(!p))
5782 goto out_overflow;
5783 type = be32_to_cpup(p++);
5784 if (type != pdev->layout_type) {
5785 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5786 __func__, pdev->layout_type, type);
5787 return -EINVAL;
5788 }
5789 /*
5790 * Get the length of the opaque device_addr4. xdr_read_pages places
5791 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5792 * and places the remaining xdr data in xdr_buf->tail
5793 */
5794 pdev->mincount = be32_to_cpup(p);
5795 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5796 goto out_overflow;
5797
5798 /* Parse notification bitmap, verifying that it is zero. */
5799 p = xdr_inline_decode(xdr, 4);
5800 if (unlikely(!p))
5801 goto out_overflow;
5802 len = be32_to_cpup(p);
5803 if (len) {
5804 uint32_t i;
5805
5806 p = xdr_inline_decode(xdr, 4 * len);
5807 if (unlikely(!p))
5808 goto out_overflow;
5809
5810 res->notification = be32_to_cpup(p++);
5811 for (i = 1; i < len; i++) {
5812 if (be32_to_cpup(p++)) {
5813 dprintk("%s: unsupported notification\n",
5814 __func__);
5815 return -EIO;
5816 }
5817 }
5818 }
5819 return 0;
5820 out_overflow:
5821 print_overflow_msg(__func__, xdr);
5822 return -EIO;
5823 }
5824
5825 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5826 struct nfs4_layoutget_res *res)
5827 {
5828 __be32 *p;
5829 int status;
5830 u32 layout_count;
5831 u32 recvd;
5832
5833 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5834 if (status)
5835 return status;
5836 p = xdr_inline_decode(xdr, 4);
5837 if (unlikely(!p))
5838 goto out_overflow;
5839 res->return_on_close = be32_to_cpup(p);
5840 decode_stateid(xdr, &res->stateid);
5841 p = xdr_inline_decode(xdr, 4);
5842 if (unlikely(!p))
5843 goto out_overflow;
5844 layout_count = be32_to_cpup(p);
5845 if (!layout_count) {
5846 dprintk("%s: server responded with empty layout array\n",
5847 __func__);
5848 return -EINVAL;
5849 }
5850
5851 p = xdr_inline_decode(xdr, 28);
5852 if (unlikely(!p))
5853 goto out_overflow;
5854 p = xdr_decode_hyper(p, &res->range.offset);
5855 p = xdr_decode_hyper(p, &res->range.length);
5856 res->range.iomode = be32_to_cpup(p++);
5857 res->type = be32_to_cpup(p++);
5858 res->layoutp->len = be32_to_cpup(p);
5859
5860 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5861 __func__,
5862 (unsigned long)res->range.offset,
5863 (unsigned long)res->range.length,
5864 res->range.iomode,
5865 res->type,
5866 res->layoutp->len);
5867
5868 recvd = xdr_read_pages(xdr, res->layoutp->len);
5869 if (res->layoutp->len > recvd) {
5870 dprintk("NFS: server cheating in layoutget reply: "
5871 "layout len %u > recvd %u\n",
5872 res->layoutp->len, recvd);
5873 return -EINVAL;
5874 }
5875
5876 if (layout_count > 1) {
5877 /* We only handle a length one array at the moment. Any
5878 * further entries are just ignored. Note that this means
5879 * the client may see a response that is less than the
5880 * minimum it requested.
5881 */
5882 dprintk("%s: server responded with %d layouts, dropping tail\n",
5883 __func__, layout_count);
5884 }
5885
5886 return 0;
5887 out_overflow:
5888 print_overflow_msg(__func__, xdr);
5889 return -EIO;
5890 }
5891
5892 static int decode_layoutreturn(struct xdr_stream *xdr,
5893 struct nfs4_layoutreturn_res *res)
5894 {
5895 __be32 *p;
5896 int status;
5897
5898 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5899 if (status)
5900 return status;
5901 p = xdr_inline_decode(xdr, 4);
5902 if (unlikely(!p))
5903 goto out_overflow;
5904 res->lrs_present = be32_to_cpup(p);
5905 if (res->lrs_present)
5906 status = decode_stateid(xdr, &res->stateid);
5907 return status;
5908 out_overflow:
5909 print_overflow_msg(__func__, xdr);
5910 return -EIO;
5911 }
5912
5913 static int decode_layoutcommit(struct xdr_stream *xdr,
5914 struct rpc_rqst *req,
5915 struct nfs4_layoutcommit_res *res)
5916 {
5917 __be32 *p;
5918 __u32 sizechanged;
5919 int status;
5920
5921 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5922 res->status = status;
5923 if (status)
5924 return status;
5925
5926 p = xdr_inline_decode(xdr, 4);
5927 if (unlikely(!p))
5928 goto out_overflow;
5929 sizechanged = be32_to_cpup(p);
5930
5931 if (sizechanged) {
5932 /* throw away new size */
5933 p = xdr_inline_decode(xdr, 8);
5934 if (unlikely(!p))
5935 goto out_overflow;
5936 }
5937 return 0;
5938 out_overflow:
5939 print_overflow_msg(__func__, xdr);
5940 return -EIO;
5941 }
5942
5943 static int decode_test_stateid(struct xdr_stream *xdr,
5944 struct nfs41_test_stateid_res *res)
5945 {
5946 __be32 *p;
5947 int status;
5948 int num_res;
5949
5950 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5951 if (status)
5952 return status;
5953
5954 p = xdr_inline_decode(xdr, 4);
5955 if (unlikely(!p))
5956 goto out_overflow;
5957 num_res = be32_to_cpup(p++);
5958 if (num_res != 1)
5959 goto out;
5960
5961 p = xdr_inline_decode(xdr, 4);
5962 if (unlikely(!p))
5963 goto out_overflow;
5964 res->status = be32_to_cpup(p++);
5965
5966 return status;
5967 out_overflow:
5968 print_overflow_msg(__func__, xdr);
5969 out:
5970 return -EIO;
5971 }
5972
5973 static int decode_free_stateid(struct xdr_stream *xdr,
5974 struct nfs41_free_stateid_res *res)
5975 {
5976 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
5977 return res->status;
5978 }
5979 #endif /* CONFIG_NFS_V4_1 */
5980
5981 /*
5982 * END OF "GENERIC" DECODE ROUTINES.
5983 */
5984
5985 /*
5986 * Decode OPEN_DOWNGRADE response
5987 */
5988 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5989 struct xdr_stream *xdr,
5990 struct nfs_closeres *res)
5991 {
5992 struct compound_hdr hdr;
5993 int status;
5994
5995 status = decode_compound_hdr(xdr, &hdr);
5996 if (status)
5997 goto out;
5998 status = decode_sequence(xdr, &res->seq_res, rqstp);
5999 if (status)
6000 goto out;
6001 status = decode_putfh(xdr);
6002 if (status)
6003 goto out;
6004 status = decode_open_downgrade(xdr, res);
6005 if (status != 0)
6006 goto out;
6007 decode_getfattr(xdr, res->fattr, res->server);
6008 out:
6009 return status;
6010 }
6011
6012 /*
6013 * Decode ACCESS response
6014 */
6015 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6016 struct nfs4_accessres *res)
6017 {
6018 struct compound_hdr hdr;
6019 int status;
6020
6021 status = decode_compound_hdr(xdr, &hdr);
6022 if (status)
6023 goto out;
6024 status = decode_sequence(xdr, &res->seq_res, rqstp);
6025 if (status)
6026 goto out;
6027 status = decode_putfh(xdr);
6028 if (status != 0)
6029 goto out;
6030 status = decode_access(xdr, &res->supported, &res->access);
6031 if (status != 0)
6032 goto out;
6033 decode_getfattr(xdr, res->fattr, res->server);
6034 out:
6035 return status;
6036 }
6037
6038 /*
6039 * Decode LOOKUP response
6040 */
6041 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6042 struct nfs4_lookup_res *res)
6043 {
6044 struct compound_hdr hdr;
6045 int status;
6046
6047 status = decode_compound_hdr(xdr, &hdr);
6048 if (status)
6049 goto out;
6050 status = decode_sequence(xdr, &res->seq_res, rqstp);
6051 if (status)
6052 goto out;
6053 status = decode_putfh(xdr);
6054 if (status)
6055 goto out;
6056 status = decode_lookup(xdr);
6057 if (status)
6058 goto out;
6059 status = decode_getfh(xdr, res->fh);
6060 if (status)
6061 goto out;
6062 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6063 out:
6064 return status;
6065 }
6066
6067 /*
6068 * Decode LOOKUP_ROOT response
6069 */
6070 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6071 struct xdr_stream *xdr,
6072 struct nfs4_lookup_res *res)
6073 {
6074 struct compound_hdr hdr;
6075 int status;
6076
6077 status = decode_compound_hdr(xdr, &hdr);
6078 if (status)
6079 goto out;
6080 status = decode_sequence(xdr, &res->seq_res, rqstp);
6081 if (status)
6082 goto out;
6083 status = decode_putrootfh(xdr);
6084 if (status)
6085 goto out;
6086 status = decode_getfh(xdr, res->fh);
6087 if (status == 0)
6088 status = decode_getfattr_label(xdr, res->fattr,
6089 res->label, res->server);
6090 out:
6091 return status;
6092 }
6093
6094 /*
6095 * Decode REMOVE response
6096 */
6097 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6098 struct nfs_removeres *res)
6099 {
6100 struct compound_hdr hdr;
6101 int status;
6102
6103 status = decode_compound_hdr(xdr, &hdr);
6104 if (status)
6105 goto out;
6106 status = decode_sequence(xdr, &res->seq_res, rqstp);
6107 if (status)
6108 goto out;
6109 status = decode_putfh(xdr);
6110 if (status)
6111 goto out;
6112 status = decode_remove(xdr, &res->cinfo);
6113 out:
6114 return status;
6115 }
6116
6117 /*
6118 * Decode RENAME response
6119 */
6120 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6121 struct nfs_renameres *res)
6122 {
6123 struct compound_hdr hdr;
6124 int status;
6125
6126 status = decode_compound_hdr(xdr, &hdr);
6127 if (status)
6128 goto out;
6129 status = decode_sequence(xdr, &res->seq_res, rqstp);
6130 if (status)
6131 goto out;
6132 status = decode_putfh(xdr);
6133 if (status)
6134 goto out;
6135 status = decode_savefh(xdr);
6136 if (status)
6137 goto out;
6138 status = decode_putfh(xdr);
6139 if (status)
6140 goto out;
6141 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6142 out:
6143 return status;
6144 }
6145
6146 /*
6147 * Decode LINK response
6148 */
6149 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6150 struct nfs4_link_res *res)
6151 {
6152 struct compound_hdr hdr;
6153 int status;
6154
6155 status = decode_compound_hdr(xdr, &hdr);
6156 if (status)
6157 goto out;
6158 status = decode_sequence(xdr, &res->seq_res, rqstp);
6159 if (status)
6160 goto out;
6161 status = decode_putfh(xdr);
6162 if (status)
6163 goto out;
6164 status = decode_savefh(xdr);
6165 if (status)
6166 goto out;
6167 status = decode_putfh(xdr);
6168 if (status)
6169 goto out;
6170 status = decode_link(xdr, &res->cinfo);
6171 if (status)
6172 goto out;
6173 /*
6174 * Note order: OP_LINK leaves the directory as the current
6175 * filehandle.
6176 */
6177 status = decode_restorefh(xdr);
6178 if (status)
6179 goto out;
6180 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6181 out:
6182 return status;
6183 }
6184
6185 /*
6186 * Decode CREATE response
6187 */
6188 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6189 struct nfs4_create_res *res)
6190 {
6191 struct compound_hdr hdr;
6192 int status;
6193
6194 status = decode_compound_hdr(xdr, &hdr);
6195 if (status)
6196 goto out;
6197 status = decode_sequence(xdr, &res->seq_res, rqstp);
6198 if (status)
6199 goto out;
6200 status = decode_putfh(xdr);
6201 if (status)
6202 goto out;
6203 status = decode_create(xdr, &res->dir_cinfo);
6204 if (status)
6205 goto out;
6206 status = decode_getfh(xdr, res->fh);
6207 if (status)
6208 goto out;
6209 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6210 out:
6211 return status;
6212 }
6213
6214 /*
6215 * Decode SYMLINK response
6216 */
6217 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6218 struct nfs4_create_res *res)
6219 {
6220 return nfs4_xdr_dec_create(rqstp, xdr, res);
6221 }
6222
6223 /*
6224 * Decode GETATTR response
6225 */
6226 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6227 struct nfs4_getattr_res *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_getfattr_label(xdr, res->fattr, res->label, res->server);
6242 out:
6243 return status;
6244 }
6245
6246 /*
6247 * Encode an SETACL request
6248 */
6249 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6250 struct nfs_setaclargs *args)
6251 {
6252 struct compound_hdr hdr = {
6253 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6254 };
6255
6256 encode_compound_hdr(xdr, req, &hdr);
6257 encode_sequence(xdr, &args->seq_args, &hdr);
6258 encode_putfh(xdr, args->fh, &hdr);
6259 encode_setacl(xdr, args, &hdr);
6260 encode_nops(&hdr);
6261 }
6262
6263 /*
6264 * Decode SETACL response
6265 */
6266 static int
6267 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6268 struct nfs_setaclres *res)
6269 {
6270 struct compound_hdr hdr;
6271 int status;
6272
6273 status = decode_compound_hdr(xdr, &hdr);
6274 if (status)
6275 goto out;
6276 status = decode_sequence(xdr, &res->seq_res, rqstp);
6277 if (status)
6278 goto out;
6279 status = decode_putfh(xdr);
6280 if (status)
6281 goto out;
6282 status = decode_setattr(xdr);
6283 out:
6284 return status;
6285 }
6286
6287 /*
6288 * Decode GETACL response
6289 */
6290 static int
6291 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6292 struct nfs_getaclres *res)
6293 {
6294 struct compound_hdr hdr;
6295 int status;
6296
6297 if (res->acl_scratch != NULL) {
6298 void *p = page_address(res->acl_scratch);
6299 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6300 }
6301 status = decode_compound_hdr(xdr, &hdr);
6302 if (status)
6303 goto out;
6304 status = decode_sequence(xdr, &res->seq_res, rqstp);
6305 if (status)
6306 goto out;
6307 status = decode_putfh(xdr);
6308 if (status)
6309 goto out;
6310 status = decode_getacl(xdr, rqstp, res);
6311
6312 out:
6313 return status;
6314 }
6315
6316 /*
6317 * Decode CLOSE response
6318 */
6319 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6320 struct nfs_closeres *res)
6321 {
6322 struct compound_hdr hdr;
6323 int status;
6324
6325 status = decode_compound_hdr(xdr, &hdr);
6326 if (status)
6327 goto out;
6328 status = decode_sequence(xdr, &res->seq_res, rqstp);
6329 if (status)
6330 goto out;
6331 status = decode_putfh(xdr);
6332 if (status)
6333 goto out;
6334 status = decode_close(xdr, res);
6335 if (status != 0)
6336 goto out;
6337 /*
6338 * Note: Server may do delete on close for this file
6339 * in which case the getattr call will fail with
6340 * an ESTALE error. Shouldn't be a problem,
6341 * though, since fattr->valid will remain unset.
6342 */
6343 decode_getfattr(xdr, res->fattr, res->server);
6344 out:
6345 return status;
6346 }
6347
6348 /*
6349 * Decode OPEN response
6350 */
6351 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6352 struct nfs_openres *res)
6353 {
6354 struct compound_hdr hdr;
6355 int status;
6356
6357 status = decode_compound_hdr(xdr, &hdr);
6358 if (status)
6359 goto out;
6360 status = decode_sequence(xdr, &res->seq_res, rqstp);
6361 if (status)
6362 goto out;
6363 status = decode_putfh(xdr);
6364 if (status)
6365 goto out;
6366 status = decode_open(xdr, res);
6367 if (status)
6368 goto out;
6369 status = decode_getfh(xdr, &res->fh);
6370 if (status)
6371 goto out;
6372 if (res->access_request)
6373 decode_access(xdr, &res->access_supported, &res->access_result);
6374 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6375 out:
6376 return status;
6377 }
6378
6379 /*
6380 * Decode OPEN_CONFIRM response
6381 */
6382 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6383 struct xdr_stream *xdr,
6384 struct nfs_open_confirmres *res)
6385 {
6386 struct compound_hdr hdr;
6387 int status;
6388
6389 status = decode_compound_hdr(xdr, &hdr);
6390 if (status)
6391 goto out;
6392 status = decode_putfh(xdr);
6393 if (status)
6394 goto out;
6395 status = decode_open_confirm(xdr, res);
6396 out:
6397 return status;
6398 }
6399
6400 /*
6401 * Decode OPEN response
6402 */
6403 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6404 struct xdr_stream *xdr,
6405 struct nfs_openres *res)
6406 {
6407 struct compound_hdr hdr;
6408 int status;
6409
6410 status = decode_compound_hdr(xdr, &hdr);
6411 if (status)
6412 goto out;
6413 status = decode_sequence(xdr, &res->seq_res, rqstp);
6414 if (status)
6415 goto out;
6416 status = decode_putfh(xdr);
6417 if (status)
6418 goto out;
6419 status = decode_open(xdr, res);
6420 if (status)
6421 goto out;
6422 if (res->access_request)
6423 decode_access(xdr, &res->access_supported, &res->access_result);
6424 decode_getfattr(xdr, res->f_attr, res->server);
6425 out:
6426 return status;
6427 }
6428
6429 /*
6430 * Decode SETATTR response
6431 */
6432 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6433 struct xdr_stream *xdr,
6434 struct nfs_setattrres *res)
6435 {
6436 struct compound_hdr hdr;
6437 int status;
6438
6439 status = decode_compound_hdr(xdr, &hdr);
6440 if (status)
6441 goto out;
6442 status = decode_sequence(xdr, &res->seq_res, rqstp);
6443 if (status)
6444 goto out;
6445 status = decode_putfh(xdr);
6446 if (status)
6447 goto out;
6448 status = decode_setattr(xdr);
6449 if (status)
6450 goto out;
6451 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6452 out:
6453 return status;
6454 }
6455
6456 /*
6457 * Decode LOCK response
6458 */
6459 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6460 struct nfs_lock_res *res)
6461 {
6462 struct compound_hdr hdr;
6463 int status;
6464
6465 status = decode_compound_hdr(xdr, &hdr);
6466 if (status)
6467 goto out;
6468 status = decode_sequence(xdr, &res->seq_res, rqstp);
6469 if (status)
6470 goto out;
6471 status = decode_putfh(xdr);
6472 if (status)
6473 goto out;
6474 status = decode_lock(xdr, res);
6475 out:
6476 return status;
6477 }
6478
6479 /*
6480 * Decode LOCKT response
6481 */
6482 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6483 struct nfs_lockt_res *res)
6484 {
6485 struct compound_hdr hdr;
6486 int status;
6487
6488 status = decode_compound_hdr(xdr, &hdr);
6489 if (status)
6490 goto out;
6491 status = decode_sequence(xdr, &res->seq_res, rqstp);
6492 if (status)
6493 goto out;
6494 status = decode_putfh(xdr);
6495 if (status)
6496 goto out;
6497 status = decode_lockt(xdr, res);
6498 out:
6499 return status;
6500 }
6501
6502 /*
6503 * Decode LOCKU response
6504 */
6505 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6506 struct nfs_locku_res *res)
6507 {
6508 struct compound_hdr hdr;
6509 int status;
6510
6511 status = decode_compound_hdr(xdr, &hdr);
6512 if (status)
6513 goto out;
6514 status = decode_sequence(xdr, &res->seq_res, rqstp);
6515 if (status)
6516 goto out;
6517 status = decode_putfh(xdr);
6518 if (status)
6519 goto out;
6520 status = decode_locku(xdr, res);
6521 out:
6522 return status;
6523 }
6524
6525 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6526 struct xdr_stream *xdr, void *dummy)
6527 {
6528 struct compound_hdr hdr;
6529 int status;
6530
6531 status = decode_compound_hdr(xdr, &hdr);
6532 if (!status)
6533 status = decode_release_lockowner(xdr);
6534 return status;
6535 }
6536
6537 /*
6538 * Decode READLINK response
6539 */
6540 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6541 struct xdr_stream *xdr,
6542 struct nfs4_readlink_res *res)
6543 {
6544 struct compound_hdr hdr;
6545 int status;
6546
6547 status = decode_compound_hdr(xdr, &hdr);
6548 if (status)
6549 goto out;
6550 status = decode_sequence(xdr, &res->seq_res, rqstp);
6551 if (status)
6552 goto out;
6553 status = decode_putfh(xdr);
6554 if (status)
6555 goto out;
6556 status = decode_readlink(xdr, rqstp);
6557 out:
6558 return status;
6559 }
6560
6561 /*
6562 * Decode READDIR response
6563 */
6564 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6565 struct nfs4_readdir_res *res)
6566 {
6567 struct compound_hdr hdr;
6568 int status;
6569
6570 status = decode_compound_hdr(xdr, &hdr);
6571 if (status)
6572 goto out;
6573 status = decode_sequence(xdr, &res->seq_res, rqstp);
6574 if (status)
6575 goto out;
6576 status = decode_putfh(xdr);
6577 if (status)
6578 goto out;
6579 status = decode_readdir(xdr, rqstp, res);
6580 out:
6581 return status;
6582 }
6583
6584 /*
6585 * Decode Read response
6586 */
6587 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6588 struct nfs_pgio_res *res)
6589 {
6590 struct compound_hdr hdr;
6591 int status;
6592
6593 status = decode_compound_hdr(xdr, &hdr);
6594 res->op_status = hdr.status;
6595 if (status)
6596 goto out;
6597 status = decode_sequence(xdr, &res->seq_res, rqstp);
6598 if (status)
6599 goto out;
6600 status = decode_putfh(xdr);
6601 if (status)
6602 goto out;
6603 status = decode_read(xdr, rqstp, res);
6604 if (!status)
6605 status = res->count;
6606 out:
6607 return status;
6608 }
6609
6610 /*
6611 * Decode WRITE response
6612 */
6613 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6614 struct nfs_pgio_res *res)
6615 {
6616 struct compound_hdr hdr;
6617 int status;
6618
6619 status = decode_compound_hdr(xdr, &hdr);
6620 res->op_status = hdr.status;
6621 if (status)
6622 goto out;
6623 status = decode_sequence(xdr, &res->seq_res, rqstp);
6624 if (status)
6625 goto out;
6626 status = decode_putfh(xdr);
6627 if (status)
6628 goto out;
6629 status = decode_write(xdr, res);
6630 if (status)
6631 goto out;
6632 if (res->fattr)
6633 decode_getfattr(xdr, res->fattr, res->server);
6634 if (!status)
6635 status = res->count;
6636 out:
6637 return status;
6638 }
6639
6640 /*
6641 * Decode COMMIT response
6642 */
6643 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6644 struct nfs_commitres *res)
6645 {
6646 struct compound_hdr hdr;
6647 int status;
6648
6649 status = decode_compound_hdr(xdr, &hdr);
6650 res->op_status = hdr.status;
6651 if (status)
6652 goto out;
6653 status = decode_sequence(xdr, &res->seq_res, rqstp);
6654 if (status)
6655 goto out;
6656 status = decode_putfh(xdr);
6657 if (status)
6658 goto out;
6659 status = decode_commit(xdr, res);
6660 out:
6661 return status;
6662 }
6663
6664 /*
6665 * Decode FSINFO response
6666 */
6667 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6668 struct nfs4_fsinfo_res *res)
6669 {
6670 struct compound_hdr hdr;
6671 int status;
6672
6673 status = decode_compound_hdr(xdr, &hdr);
6674 if (!status)
6675 status = decode_sequence(xdr, &res->seq_res, req);
6676 if (!status)
6677 status = decode_putfh(xdr);
6678 if (!status)
6679 status = decode_fsinfo(xdr, res->fsinfo);
6680 return status;
6681 }
6682
6683 /*
6684 * Decode PATHCONF response
6685 */
6686 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6687 struct nfs4_pathconf_res *res)
6688 {
6689 struct compound_hdr hdr;
6690 int status;
6691
6692 status = decode_compound_hdr(xdr, &hdr);
6693 if (!status)
6694 status = decode_sequence(xdr, &res->seq_res, req);
6695 if (!status)
6696 status = decode_putfh(xdr);
6697 if (!status)
6698 status = decode_pathconf(xdr, res->pathconf);
6699 return status;
6700 }
6701
6702 /*
6703 * Decode STATFS response
6704 */
6705 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6706 struct nfs4_statfs_res *res)
6707 {
6708 struct compound_hdr hdr;
6709 int status;
6710
6711 status = decode_compound_hdr(xdr, &hdr);
6712 if (!status)
6713 status = decode_sequence(xdr, &res->seq_res, req);
6714 if (!status)
6715 status = decode_putfh(xdr);
6716 if (!status)
6717 status = decode_statfs(xdr, res->fsstat);
6718 return status;
6719 }
6720
6721 /*
6722 * Decode GETATTR_BITMAP response
6723 */
6724 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6725 struct xdr_stream *xdr,
6726 struct nfs4_server_caps_res *res)
6727 {
6728 struct compound_hdr hdr;
6729 int status;
6730
6731 status = decode_compound_hdr(xdr, &hdr);
6732 if (status)
6733 goto out;
6734 status = decode_sequence(xdr, &res->seq_res, req);
6735 if (status)
6736 goto out;
6737 status = decode_putfh(xdr);
6738 if (status)
6739 goto out;
6740 status = decode_server_caps(xdr, res);
6741 out:
6742 return status;
6743 }
6744
6745 /*
6746 * Decode RENEW response
6747 */
6748 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6749 void *__unused)
6750 {
6751 struct compound_hdr hdr;
6752 int status;
6753
6754 status = decode_compound_hdr(xdr, &hdr);
6755 if (!status)
6756 status = decode_renew(xdr);
6757 return status;
6758 }
6759
6760 /*
6761 * Decode SETCLIENTID response
6762 */
6763 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6764 struct xdr_stream *xdr,
6765 struct nfs4_setclientid_res *res)
6766 {
6767 struct compound_hdr hdr;
6768 int status;
6769
6770 status = decode_compound_hdr(xdr, &hdr);
6771 if (!status)
6772 status = decode_setclientid(xdr, res);
6773 return status;
6774 }
6775
6776 /*
6777 * Decode SETCLIENTID_CONFIRM response
6778 */
6779 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6780 struct xdr_stream *xdr)
6781 {
6782 struct compound_hdr hdr;
6783 int status;
6784
6785 status = decode_compound_hdr(xdr, &hdr);
6786 if (!status)
6787 status = decode_setclientid_confirm(xdr);
6788 return status;
6789 }
6790
6791 /*
6792 * Decode DELEGRETURN response
6793 */
6794 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6795 struct xdr_stream *xdr,
6796 struct nfs4_delegreturnres *res)
6797 {
6798 struct compound_hdr hdr;
6799 int status;
6800
6801 status = decode_compound_hdr(xdr, &hdr);
6802 if (status)
6803 goto out;
6804 status = decode_sequence(xdr, &res->seq_res, rqstp);
6805 if (status)
6806 goto out;
6807 status = decode_putfh(xdr);
6808 if (status != 0)
6809 goto out;
6810 status = decode_getfattr(xdr, res->fattr, res->server);
6811 if (status != 0)
6812 goto out;
6813 status = decode_delegreturn(xdr);
6814 out:
6815 return status;
6816 }
6817
6818 /*
6819 * Decode FS_LOCATIONS response
6820 */
6821 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6822 struct xdr_stream *xdr,
6823 struct nfs4_fs_locations_res *res)
6824 {
6825 struct compound_hdr hdr;
6826 int status;
6827
6828 status = decode_compound_hdr(xdr, &hdr);
6829 if (status)
6830 goto out;
6831 status = decode_sequence(xdr, &res->seq_res, req);
6832 if (status)
6833 goto out;
6834 status = decode_putfh(xdr);
6835 if (status)
6836 goto out;
6837 if (res->migration) {
6838 xdr_enter_page(xdr, PAGE_SIZE);
6839 status = decode_getfattr_generic(xdr,
6840 &res->fs_locations->fattr,
6841 NULL, res->fs_locations,
6842 NULL, res->fs_locations->server);
6843 if (status)
6844 goto out;
6845 if (res->renew)
6846 status = decode_renew(xdr);
6847 } else {
6848 status = decode_lookup(xdr);
6849 if (status)
6850 goto out;
6851 xdr_enter_page(xdr, PAGE_SIZE);
6852 status = decode_getfattr_generic(xdr,
6853 &res->fs_locations->fattr,
6854 NULL, res->fs_locations,
6855 NULL, res->fs_locations->server);
6856 }
6857 out:
6858 return status;
6859 }
6860
6861 /*
6862 * Decode SECINFO response
6863 */
6864 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6865 struct xdr_stream *xdr,
6866 struct nfs4_secinfo_res *res)
6867 {
6868 struct compound_hdr hdr;
6869 int status;
6870
6871 status = decode_compound_hdr(xdr, &hdr);
6872 if (status)
6873 goto out;
6874 status = decode_sequence(xdr, &res->seq_res, rqstp);
6875 if (status)
6876 goto out;
6877 status = decode_putfh(xdr);
6878 if (status)
6879 goto out;
6880 status = decode_secinfo(xdr, res);
6881 out:
6882 return status;
6883 }
6884
6885 /*
6886 * Decode FSID_PRESENT response
6887 */
6888 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
6889 struct xdr_stream *xdr,
6890 struct nfs4_fsid_present_res *res)
6891 {
6892 struct compound_hdr hdr;
6893 int status;
6894
6895 status = decode_compound_hdr(xdr, &hdr);
6896 if (status)
6897 goto out;
6898 status = decode_sequence(xdr, &res->seq_res, rqstp);
6899 if (status)
6900 goto out;
6901 status = decode_putfh(xdr);
6902 if (status)
6903 goto out;
6904 status = decode_getfh(xdr, res->fh);
6905 if (status)
6906 goto out;
6907 if (res->renew)
6908 status = decode_renew(xdr);
6909 out:
6910 return status;
6911 }
6912
6913 #if defined(CONFIG_NFS_V4_1)
6914 /*
6915 * Decode BIND_CONN_TO_SESSION response
6916 */
6917 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6918 struct xdr_stream *xdr,
6919 void *res)
6920 {
6921 struct compound_hdr hdr;
6922 int status;
6923
6924 status = decode_compound_hdr(xdr, &hdr);
6925 if (!status)
6926 status = decode_bind_conn_to_session(xdr, res);
6927 return status;
6928 }
6929
6930 /*
6931 * Decode EXCHANGE_ID response
6932 */
6933 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6934 struct xdr_stream *xdr,
6935 void *res)
6936 {
6937 struct compound_hdr hdr;
6938 int status;
6939
6940 status = decode_compound_hdr(xdr, &hdr);
6941 if (!status)
6942 status = decode_exchange_id(xdr, res);
6943 return status;
6944 }
6945
6946 /*
6947 * Decode CREATE_SESSION response
6948 */
6949 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6950 struct xdr_stream *xdr,
6951 struct nfs41_create_session_res *res)
6952 {
6953 struct compound_hdr hdr;
6954 int status;
6955
6956 status = decode_compound_hdr(xdr, &hdr);
6957 if (!status)
6958 status = decode_create_session(xdr, res);
6959 return status;
6960 }
6961
6962 /*
6963 * Decode DESTROY_SESSION response
6964 */
6965 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6966 struct xdr_stream *xdr,
6967 void *res)
6968 {
6969 struct compound_hdr hdr;
6970 int status;
6971
6972 status = decode_compound_hdr(xdr, &hdr);
6973 if (!status)
6974 status = decode_destroy_session(xdr, res);
6975 return status;
6976 }
6977
6978 /*
6979 * Decode DESTROY_CLIENTID response
6980 */
6981 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6982 struct xdr_stream *xdr,
6983 void *res)
6984 {
6985 struct compound_hdr hdr;
6986 int status;
6987
6988 status = decode_compound_hdr(xdr, &hdr);
6989 if (!status)
6990 status = decode_destroy_clientid(xdr, res);
6991 return status;
6992 }
6993
6994 /*
6995 * Decode SEQUENCE response
6996 */
6997 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6998 struct xdr_stream *xdr,
6999 struct nfs4_sequence_res *res)
7000 {
7001 struct compound_hdr hdr;
7002 int status;
7003
7004 status = decode_compound_hdr(xdr, &hdr);
7005 if (!status)
7006 status = decode_sequence(xdr, res, rqstp);
7007 return status;
7008 }
7009
7010 /*
7011 * Decode GET_LEASE_TIME response
7012 */
7013 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7014 struct xdr_stream *xdr,
7015 struct nfs4_get_lease_time_res *res)
7016 {
7017 struct compound_hdr hdr;
7018 int status;
7019
7020 status = decode_compound_hdr(xdr, &hdr);
7021 if (!status)
7022 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7023 if (!status)
7024 status = decode_putrootfh(xdr);
7025 if (!status)
7026 status = decode_fsinfo(xdr, res->lr_fsinfo);
7027 return status;
7028 }
7029
7030 /*
7031 * Decode RECLAIM_COMPLETE response
7032 */
7033 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7034 struct xdr_stream *xdr,
7035 struct nfs41_reclaim_complete_res *res)
7036 {
7037 struct compound_hdr hdr;
7038 int status;
7039
7040 status = decode_compound_hdr(xdr, &hdr);
7041 if (!status)
7042 status = decode_sequence(xdr, &res->seq_res, rqstp);
7043 if (!status)
7044 status = decode_reclaim_complete(xdr, NULL);
7045 return status;
7046 }
7047
7048 /*
7049 * Decode GETDEVINFO response
7050 */
7051 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7052 struct xdr_stream *xdr,
7053 struct nfs4_getdeviceinfo_res *res)
7054 {
7055 struct compound_hdr hdr;
7056 int status;
7057
7058 status = decode_compound_hdr(xdr, &hdr);
7059 if (status != 0)
7060 goto out;
7061 status = decode_sequence(xdr, &res->seq_res, rqstp);
7062 if (status != 0)
7063 goto out;
7064 status = decode_getdeviceinfo(xdr, res);
7065 out:
7066 return status;
7067 }
7068
7069 /*
7070 * Decode LAYOUTGET response
7071 */
7072 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7073 struct xdr_stream *xdr,
7074 struct nfs4_layoutget_res *res)
7075 {
7076 struct compound_hdr hdr;
7077 int status;
7078
7079 status = decode_compound_hdr(xdr, &hdr);
7080 if (status)
7081 goto out;
7082 status = decode_sequence(xdr, &res->seq_res, rqstp);
7083 if (status)
7084 goto out;
7085 status = decode_putfh(xdr);
7086 if (status)
7087 goto out;
7088 status = decode_layoutget(xdr, rqstp, res);
7089 out:
7090 return status;
7091 }
7092
7093 /*
7094 * Decode LAYOUTRETURN response
7095 */
7096 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7097 struct xdr_stream *xdr,
7098 struct nfs4_layoutreturn_res *res)
7099 {
7100 struct compound_hdr hdr;
7101 int status;
7102
7103 status = decode_compound_hdr(xdr, &hdr);
7104 if (status)
7105 goto out;
7106 status = decode_sequence(xdr, &res->seq_res, rqstp);
7107 if (status)
7108 goto out;
7109 status = decode_putfh(xdr);
7110 if (status)
7111 goto out;
7112 status = decode_layoutreturn(xdr, res);
7113 out:
7114 return status;
7115 }
7116
7117 /*
7118 * Decode LAYOUTCOMMIT response
7119 */
7120 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7121 struct xdr_stream *xdr,
7122 struct nfs4_layoutcommit_res *res)
7123 {
7124 struct compound_hdr hdr;
7125 int status;
7126
7127 status = decode_compound_hdr(xdr, &hdr);
7128 if (status)
7129 goto out;
7130 status = decode_sequence(xdr, &res->seq_res, rqstp);
7131 if (status)
7132 goto out;
7133 status = decode_putfh(xdr);
7134 if (status)
7135 goto out;
7136 status = decode_layoutcommit(xdr, rqstp, res);
7137 if (status)
7138 goto out;
7139 decode_getfattr(xdr, res->fattr, res->server);
7140 out:
7141 return status;
7142 }
7143
7144 /*
7145 * Decode SECINFO_NO_NAME response
7146 */
7147 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7148 struct xdr_stream *xdr,
7149 struct nfs4_secinfo_res *res)
7150 {
7151 struct compound_hdr hdr;
7152 int status;
7153
7154 status = decode_compound_hdr(xdr, &hdr);
7155 if (status)
7156 goto out;
7157 status = decode_sequence(xdr, &res->seq_res, rqstp);
7158 if (status)
7159 goto out;
7160 status = decode_putrootfh(xdr);
7161 if (status)
7162 goto out;
7163 status = decode_secinfo_no_name(xdr, res);
7164 out:
7165 return status;
7166 }
7167
7168 /*
7169 * Decode TEST_STATEID response
7170 */
7171 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7172 struct xdr_stream *xdr,
7173 struct nfs41_test_stateid_res *res)
7174 {
7175 struct compound_hdr hdr;
7176 int status;
7177
7178 status = decode_compound_hdr(xdr, &hdr);
7179 if (status)
7180 goto out;
7181 status = decode_sequence(xdr, &res->seq_res, rqstp);
7182 if (status)
7183 goto out;
7184 status = decode_test_stateid(xdr, res);
7185 out:
7186 return status;
7187 }
7188
7189 /*
7190 * Decode FREE_STATEID response
7191 */
7192 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7193 struct xdr_stream *xdr,
7194 struct nfs41_free_stateid_res *res)
7195 {
7196 struct compound_hdr hdr;
7197 int status;
7198
7199 status = decode_compound_hdr(xdr, &hdr);
7200 if (status)
7201 goto out;
7202 status = decode_sequence(xdr, &res->seq_res, rqstp);
7203 if (status)
7204 goto out;
7205 status = decode_free_stateid(xdr, res);
7206 out:
7207 return status;
7208 }
7209 #endif /* CONFIG_NFS_V4_1 */
7210
7211 /**
7212 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7213 * the local page cache.
7214 * @xdr: XDR stream where entry resides
7215 * @entry: buffer to fill in with entry data
7216 * @plus: boolean indicating whether this should be a readdirplus entry
7217 *
7218 * Returns zero if successful, otherwise a negative errno value is
7219 * returned.
7220 *
7221 * This function is not invoked during READDIR reply decoding, but
7222 * rather whenever an application invokes the getdents(2) system call
7223 * on a directory already in our cache.
7224 */
7225 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7226 int plus)
7227 {
7228 unsigned int savep;
7229 uint32_t bitmap[3] = {0};
7230 uint32_t len;
7231 __be32 *p = xdr_inline_decode(xdr, 4);
7232 if (unlikely(!p))
7233 goto out_overflow;
7234 if (*p == xdr_zero) {
7235 p = xdr_inline_decode(xdr, 4);
7236 if (unlikely(!p))
7237 goto out_overflow;
7238 if (*p == xdr_zero)
7239 return -EAGAIN;
7240 entry->eof = 1;
7241 return -EBADCOOKIE;
7242 }
7243
7244 p = xdr_inline_decode(xdr, 12);
7245 if (unlikely(!p))
7246 goto out_overflow;
7247 entry->prev_cookie = entry->cookie;
7248 p = xdr_decode_hyper(p, &entry->cookie);
7249 entry->len = be32_to_cpup(p);
7250
7251 p = xdr_inline_decode(xdr, entry->len);
7252 if (unlikely(!p))
7253 goto out_overflow;
7254 entry->name = (const char *) p;
7255
7256 /*
7257 * In case the server doesn't return an inode number,
7258 * we fake one here. (We don't use inode number 0,
7259 * since glibc seems to choke on it...)
7260 */
7261 entry->ino = 1;
7262 entry->fattr->valid = 0;
7263
7264 if (decode_attr_bitmap(xdr, bitmap) < 0)
7265 goto out_overflow;
7266
7267 if (decode_attr_length(xdr, &len, &savep) < 0)
7268 goto out_overflow;
7269
7270 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7271 NULL, entry->label, entry->server) < 0)
7272 goto out_overflow;
7273 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7274 entry->ino = entry->fattr->mounted_on_fileid;
7275 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7276 entry->ino = entry->fattr->fileid;
7277
7278 entry->d_type = DT_UNKNOWN;
7279 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7280 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7281
7282 return 0;
7283
7284 out_overflow:
7285 print_overflow_msg(__func__, xdr);
7286 return -EAGAIN;
7287 }
7288
7289 /*
7290 * We need to translate between nfs status return values and
7291 * the local errno values which may not be the same.
7292 */
7293 static struct {
7294 int stat;
7295 int errno;
7296 } nfs_errtbl[] = {
7297 { NFS4_OK, 0 },
7298 { NFS4ERR_PERM, -EPERM },
7299 { NFS4ERR_NOENT, -ENOENT },
7300 { NFS4ERR_IO, -errno_NFSERR_IO},
7301 { NFS4ERR_NXIO, -ENXIO },
7302 { NFS4ERR_ACCESS, -EACCES },
7303 { NFS4ERR_EXIST, -EEXIST },
7304 { NFS4ERR_XDEV, -EXDEV },
7305 { NFS4ERR_NOTDIR, -ENOTDIR },
7306 { NFS4ERR_ISDIR, -EISDIR },
7307 { NFS4ERR_INVAL, -EINVAL },
7308 { NFS4ERR_FBIG, -EFBIG },
7309 { NFS4ERR_NOSPC, -ENOSPC },
7310 { NFS4ERR_ROFS, -EROFS },
7311 { NFS4ERR_MLINK, -EMLINK },
7312 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7313 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7314 { NFS4ERR_DQUOT, -EDQUOT },
7315 { NFS4ERR_STALE, -ESTALE },
7316 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7317 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7318 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7319 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7320 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7321 { NFS4ERR_BADTYPE, -EBADTYPE },
7322 { NFS4ERR_LOCKED, -EAGAIN },
7323 { NFS4ERR_SYMLINK, -ELOOP },
7324 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7325 { NFS4ERR_DEADLOCK, -EDEADLK },
7326 { -1, -EIO }
7327 };
7328
7329 /*
7330 * Convert an NFS error code to a local one.
7331 * This one is used jointly by NFSv2 and NFSv3.
7332 */
7333 static int
7334 nfs4_stat_to_errno(int stat)
7335 {
7336 int i;
7337 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7338 if (nfs_errtbl[i].stat == stat)
7339 return nfs_errtbl[i].errno;
7340 }
7341 if (stat <= 10000 || stat > 10100) {
7342 /* The server is looney tunes. */
7343 return -EREMOTEIO;
7344 }
7345 /* If we cannot translate the error, the recovery routines should
7346 * handle it.
7347 * Note: remaining NFSv4 error codes have values > 10000, so should
7348 * not conflict with native Linux error codes.
7349 */
7350 return -stat;
7351 }
7352
7353 #ifdef CONFIG_NFS_V4_2
7354 #include "nfs42xdr.c"
7355 #endif /* CONFIG_NFS_V4_2 */
7356
7357 #define PROC(proc, argtype, restype) \
7358 [NFSPROC4_CLNT_##proc] = { \
7359 .p_proc = NFSPROC4_COMPOUND, \
7360 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7361 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7362 .p_arglen = NFS4_##argtype##_sz, \
7363 .p_replen = NFS4_##restype##_sz, \
7364 .p_statidx = NFSPROC4_CLNT_##proc, \
7365 .p_name = #proc, \
7366 }
7367
7368 #define STUB(proc) \
7369 [NFSPROC4_CLNT_##proc] = { \
7370 .p_name = #proc, \
7371 }
7372
7373 struct rpc_procinfo nfs4_procedures[] = {
7374 PROC(READ, enc_read, dec_read),
7375 PROC(WRITE, enc_write, dec_write),
7376 PROC(COMMIT, enc_commit, dec_commit),
7377 PROC(OPEN, enc_open, dec_open),
7378 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7379 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7380 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7381 PROC(CLOSE, enc_close, dec_close),
7382 PROC(SETATTR, enc_setattr, dec_setattr),
7383 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7384 PROC(RENEW, enc_renew, dec_renew),
7385 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7386 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7387 PROC(LOCK, enc_lock, dec_lock),
7388 PROC(LOCKT, enc_lockt, dec_lockt),
7389 PROC(LOCKU, enc_locku, dec_locku),
7390 PROC(ACCESS, enc_access, dec_access),
7391 PROC(GETATTR, enc_getattr, dec_getattr),
7392 PROC(LOOKUP, enc_lookup, dec_lookup),
7393 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7394 PROC(REMOVE, enc_remove, dec_remove),
7395 PROC(RENAME, enc_rename, dec_rename),
7396 PROC(LINK, enc_link, dec_link),
7397 PROC(SYMLINK, enc_symlink, dec_symlink),
7398 PROC(CREATE, enc_create, dec_create),
7399 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7400 PROC(STATFS, enc_statfs, dec_statfs),
7401 PROC(READLINK, enc_readlink, dec_readlink),
7402 PROC(READDIR, enc_readdir, dec_readdir),
7403 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7404 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7405 PROC(GETACL, enc_getacl, dec_getacl),
7406 PROC(SETACL, enc_setacl, dec_setacl),
7407 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7408 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7409 PROC(SECINFO, enc_secinfo, dec_secinfo),
7410 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7411 #if defined(CONFIG_NFS_V4_1)
7412 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7413 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7414 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7415 PROC(SEQUENCE, enc_sequence, dec_sequence),
7416 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7417 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7418 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7419 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7420 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7421 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7422 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7423 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7424 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7425 STUB(GETDEVICELIST),
7426 PROC(BIND_CONN_TO_SESSION,
7427 enc_bind_conn_to_session, dec_bind_conn_to_session),
7428 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7429 #endif /* CONFIG_NFS_V4_1 */
7430 #ifdef CONFIG_NFS_V4_2
7431 PROC(SEEK, enc_seek, dec_seek),
7432 PROC(ALLOCATE, enc_allocate, dec_allocate),
7433 PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
7434 PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7435 #endif /* CONFIG_NFS_V4_2 */
7436 };
7437
7438 const struct rpc_version nfs_version4 = {
7439 .number = 4,
7440 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7441 .procs = nfs4_procedures
7442 };
7443
7444 /*
7445 * Local variables:
7446 * c-basic-offset: 8
7447 * End:
7448 */
Linux with added FPC-III support