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Merge tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
[deliverable/linux.git] / fs / nfs / nfs4xdr.c
1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/in.h>
44 #include <linux/pagemap.h>
45 #include <linux/proc_fs.h>
46 #include <linux/kdev_t.h>
47 #include <linux/module.h>
48 #include <linux/utsname.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/sunrpc/msg_prot.h>
51 #include <linux/sunrpc/gss_api.h>
52 #include <linux/nfs.h>
53 #include <linux/nfs4.h>
54 #include <linux/nfs_fs.h>
55 #include <linux/nfs_idmap.h>
56
57 #include "nfs4_fs.h"
58 #include "internal.h"
59 #include "nfs4session.h"
60 #include "pnfs.h"
61 #include "netns.h"
62
63 #define NFSDBG_FACILITY NFSDBG_XDR
64
65 /* Mapping from NFS error code to "errno" error code. */
66 #define errno_NFSERR_IO EIO
67
68 static int nfs4_stat_to_errno(int);
69
70 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
71 #ifdef DEBUG
72 #define NFS4_MAXTAGLEN 20
73 #else
74 #define NFS4_MAXTAGLEN 0
75 #endif
76
77 /* lock,open owner id:
78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
79 */
80 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
81 #define lock_owner_id_maxsz (1 + 1 + 4)
82 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
83 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85 #define op_encode_hdr_maxsz (1)
86 #define op_decode_hdr_maxsz (2)
87 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
92 (NFS4_FHSIZE >> 2))
93 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
94 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
97 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
99 #define nfs4_fattr_bitmap_maxsz 4
100 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
101 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
103 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
106 /* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
107 #define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
108 #define encode_readdir_space 24
109 #define encode_readdir_bitmask_sz 3
110 #else
111 #define nfs4_label_maxsz 0
112 #define encode_readdir_space 20
113 #define encode_readdir_bitmask_sz 2
114 #endif
115 /* We support only one layout type per file system */
116 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
117 /* This is based on getfattr, which uses the most attributes: */
118 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
119 3 + 3 + 3 + nfs4_owner_maxsz + \
120 nfs4_group_maxsz + nfs4_label_maxsz + \
121 decode_mdsthreshold_maxsz))
122 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
123 nfs4_fattr_value_maxsz)
124 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
125 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
126 1 + 2 + 1 + \
127 nfs4_owner_maxsz + \
128 nfs4_group_maxsz + \
129 nfs4_label_maxsz + \
130 4 + 4)
131 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
132 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
133 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
134 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
135 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
136 /* The 5 accounts for the PNFS attributes, and assumes that at most three
137 * layout types will be returned.
138 */
139 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
140 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
141 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
142 #define decode_renew_maxsz (op_decode_hdr_maxsz)
143 #define encode_setclientid_maxsz \
144 (op_encode_hdr_maxsz + \
145 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
146 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
147 1 /* sc_prog */ + \
148 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
149 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
150 1) /* sc_cb_ident */
151 #define decode_setclientid_maxsz \
152 (op_decode_hdr_maxsz + \
153 2 + \
154 1024) /* large value for CLID_INUSE */
155 #define encode_setclientid_confirm_maxsz \
156 (op_encode_hdr_maxsz + \
157 3 + (NFS4_VERIFIER_SIZE >> 2))
158 #define decode_setclientid_confirm_maxsz \
159 (op_decode_hdr_maxsz)
160 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
161 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
162 #define encode_share_access_maxsz \
163 (2)
164 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
165 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
166 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
167 #define encode_open_maxsz (op_encode_hdr_maxsz + \
168 2 + encode_share_access_maxsz + 2 + \
169 open_owner_id_maxsz + \
170 encode_opentype_maxsz + \
171 encode_claim_null_maxsz)
172 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
173 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
174 decode_ace_maxsz)
175 #define decode_change_info_maxsz (5)
176 #define decode_open_maxsz (op_decode_hdr_maxsz + \
177 decode_stateid_maxsz + \
178 decode_change_info_maxsz + 1 + \
179 nfs4_fattr_bitmap_maxsz + \
180 decode_delegation_maxsz)
181 #define encode_open_confirm_maxsz \
182 (op_encode_hdr_maxsz + \
183 encode_stateid_maxsz + 1)
184 #define decode_open_confirm_maxsz \
185 (op_decode_hdr_maxsz + \
186 decode_stateid_maxsz)
187 #define encode_open_downgrade_maxsz \
188 (op_encode_hdr_maxsz + \
189 encode_stateid_maxsz + 1 + \
190 encode_share_access_maxsz)
191 #define decode_open_downgrade_maxsz \
192 (op_decode_hdr_maxsz + \
193 decode_stateid_maxsz)
194 #define encode_close_maxsz (op_encode_hdr_maxsz + \
195 1 + encode_stateid_maxsz)
196 #define decode_close_maxsz (op_decode_hdr_maxsz + \
197 decode_stateid_maxsz)
198 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
199 encode_stateid_maxsz + \
200 encode_attrs_maxsz)
201 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
202 nfs4_fattr_bitmap_maxsz)
203 #define encode_read_maxsz (op_encode_hdr_maxsz + \
204 encode_stateid_maxsz + 3)
205 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
206 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
207 2 + encode_verifier_maxsz + 5 + \
208 nfs4_label_maxsz)
209 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
210 decode_verifier_maxsz + \
211 nfs4_label_maxsz + nfs4_fattr_maxsz)
212 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
213 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
214 #define encode_write_maxsz (op_encode_hdr_maxsz + \
215 encode_stateid_maxsz + 4)
216 #define decode_write_maxsz (op_decode_hdr_maxsz + \
217 2 + decode_verifier_maxsz)
218 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
219 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
220 decode_verifier_maxsz)
221 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
222 nfs4_name_maxsz)
223 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
224 decode_change_info_maxsz)
225 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
226 2 * nfs4_name_maxsz)
227 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
228 decode_change_info_maxsz + \
229 decode_change_info_maxsz)
230 #define encode_link_maxsz (op_encode_hdr_maxsz + \
231 nfs4_name_maxsz)
232 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
233 #define encode_lockowner_maxsz (7)
234 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
235 7 + \
236 1 + encode_stateid_maxsz + 1 + \
237 encode_lockowner_maxsz)
238 #define decode_lock_denied_maxsz \
239 (8 + decode_lockowner_maxsz)
240 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
241 decode_lock_denied_maxsz)
242 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
243 encode_lockowner_maxsz)
244 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
245 decode_lock_denied_maxsz)
246 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
247 encode_stateid_maxsz + \
248 4)
249 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
250 decode_stateid_maxsz)
251 #define encode_release_lockowner_maxsz \
252 (op_encode_hdr_maxsz + \
253 encode_lockowner_maxsz)
254 #define decode_release_lockowner_maxsz \
255 (op_decode_hdr_maxsz)
256 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
257 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
258 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
259 1 + nfs4_name_maxsz + \
260 1 + \
261 nfs4_fattr_maxsz)
262 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
263 #define encode_create_maxsz (op_encode_hdr_maxsz + \
264 1 + 2 + nfs4_name_maxsz + \
265 encode_attrs_maxsz)
266 #define decode_create_maxsz (op_decode_hdr_maxsz + \
267 decode_change_info_maxsz + \
268 nfs4_fattr_bitmap_maxsz)
269 #define encode_statfs_maxsz (encode_getattr_maxsz)
270 #define decode_statfs_maxsz (decode_getattr_maxsz)
271 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
272 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
273 #define encode_getacl_maxsz (encode_getattr_maxsz)
274 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
275 nfs4_fattr_bitmap_maxsz + 1)
276 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
277 encode_stateid_maxsz + 3)
278 #define decode_setacl_maxsz (decode_setattr_maxsz)
279 #define encode_fs_locations_maxsz \
280 (encode_getattr_maxsz)
281 #define decode_fs_locations_maxsz \
282 (0)
283 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
284 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
285
286 #if defined(CONFIG_NFS_V4_1)
287 #define NFS4_MAX_MACHINE_NAME_LEN (64)
288 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
289 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
290
291 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
292 encode_verifier_maxsz + \
293 1 /* co_ownerid.len */ + \
294 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
295 1 /* flags */ + \
296 1 /* spa_how */ + \
297 0 /* SP4_NONE (for now) */ + \
298 1 /* implementation id array of size 1 */ + \
299 1 /* nii_domain */ + \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
301 1 /* nii_name */ + \
302 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
303 3 /* nii_date */)
304 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
305 2 /* eir_clientid */ + \
306 1 /* eir_sequenceid */ + \
307 1 /* eir_flags */ + \
308 1 /* spr_how */ + \
309 0 /* SP4_NONE (for now) */ + \
310 2 /* eir_server_owner.so_minor_id */ + \
311 /* eir_server_owner.so_major_id<> */ \
312 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
313 /* eir_server_scope<> */ \
314 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
315 1 /* eir_server_impl_id array length */ + \
316 1 /* nii_domain */ + \
317 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
318 1 /* nii_name */ + \
319 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
320 3 /* nii_date */)
321 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
322 #define decode_channel_attrs_maxsz (6 + \
323 1 /* ca_rdma_ird.len */ + \
324 1 /* ca_rdma_ird */)
325 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
326 2 /* csa_clientid */ + \
327 1 /* csa_sequence */ + \
328 1 /* csa_flags */ + \
329 encode_channel_attrs_maxsz + \
330 encode_channel_attrs_maxsz + \
331 1 /* csa_cb_program */ + \
332 1 /* csa_sec_parms.len (1) */ + \
333 1 /* cb_secflavor (AUTH_SYS) */ + \
334 1 /* stamp */ + \
335 1 /* machinename.len */ + \
336 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
337 1 /* uid */ + \
338 1 /* gid */ + \
339 1 /* gids.len (0) */)
340 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
341 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
342 1 /* csr_sequence */ + \
343 1 /* csr_flags */ + \
344 decode_channel_attrs_maxsz + \
345 decode_channel_attrs_maxsz)
346 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
347 /* bctsa_sessid */ \
348 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
349 1 /* bctsa_dir */ + \
350 1 /* bctsa_use_conn_in_rdma_mode */)
351 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
352 /* bctsr_sessid */ \
353 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
354 1 /* bctsr_dir */ + \
355 1 /* bctsr_use_conn_in_rdma_mode */)
356 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
357 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
358 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
359 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
360 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
361 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
362 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
363 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
364 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
365 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
366 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
367 encode_verifier_maxsz)
368 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
369 2 /* nfs_cookie4 gdlr_cookie */ + \
370 decode_verifier_maxsz \
371 /* verifier4 gdlr_verifier */ + \
372 1 /* gdlr_deviceid_list count */ + \
373 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
374 NFS4_DEVICEID4_SIZE) \
375 /* gdlr_deviceid_list */ + \
376 1 /* bool gdlr_eof */)
377 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
378 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
379 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
380 1 /* layout type */ + \
381 1 /* opaque devaddr4 length */ + \
382 /* devaddr4 payload is read into page */ \
383 1 /* notification bitmap length */ + \
384 1 /* notification bitmap */)
385 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
386 encode_stateid_maxsz)
387 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
388 decode_stateid_maxsz + \
389 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
390 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
391 2 /* offset */ + \
392 2 /* length */ + \
393 1 /* reclaim */ + \
394 encode_stateid_maxsz + \
395 1 /* new offset (true) */ + \
396 2 /* last byte written */ + \
397 1 /* nt_timechanged (false) */ + \
398 1 /* layoutupdate4 layout type */ + \
399 1 /* NULL filelayout layoutupdate4 payload */)
400 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
401 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
402 encode_stateid_maxsz + \
403 1 /* FIXME: opaque lrf_body always empty at the moment */)
404 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
405 1 + decode_stateid_maxsz)
406 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
407 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
408 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
409 XDR_QUADLEN(NFS4_STATEID_SIZE))
410 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
411 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
412 XDR_QUADLEN(NFS4_STATEID_SIZE))
413 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
414 #else /* CONFIG_NFS_V4_1 */
415 #define encode_sequence_maxsz 0
416 #define decode_sequence_maxsz 0
417 #endif /* CONFIG_NFS_V4_1 */
418
419 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
420 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
421 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
422 encode_sequence_maxsz + \
423 encode_putfh_maxsz + \
424 encode_read_maxsz)
425 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
426 decode_sequence_maxsz + \
427 decode_putfh_maxsz + \
428 decode_read_maxsz)
429 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
430 encode_sequence_maxsz + \
431 encode_putfh_maxsz + \
432 encode_readlink_maxsz)
433 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
434 decode_sequence_maxsz + \
435 decode_putfh_maxsz + \
436 decode_readlink_maxsz)
437 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
438 encode_sequence_maxsz + \
439 encode_putfh_maxsz + \
440 encode_readdir_maxsz)
441 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
442 decode_sequence_maxsz + \
443 decode_putfh_maxsz + \
444 decode_readdir_maxsz)
445 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
446 encode_sequence_maxsz + \
447 encode_putfh_maxsz + \
448 encode_write_maxsz + \
449 encode_getattr_maxsz)
450 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
451 decode_sequence_maxsz + \
452 decode_putfh_maxsz + \
453 decode_write_maxsz + \
454 decode_getattr_maxsz)
455 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
456 encode_sequence_maxsz + \
457 encode_putfh_maxsz + \
458 encode_commit_maxsz)
459 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
460 decode_sequence_maxsz + \
461 decode_putfh_maxsz + \
462 decode_commit_maxsz)
463 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
464 encode_sequence_maxsz + \
465 encode_putfh_maxsz + \
466 encode_open_maxsz + \
467 encode_access_maxsz + \
468 encode_getfh_maxsz + \
469 encode_getattr_maxsz)
470 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
471 decode_sequence_maxsz + \
472 decode_putfh_maxsz + \
473 decode_open_maxsz + \
474 decode_access_maxsz + \
475 decode_getfh_maxsz + \
476 decode_getattr_maxsz)
477 #define NFS4_enc_open_confirm_sz \
478 (compound_encode_hdr_maxsz + \
479 encode_putfh_maxsz + \
480 encode_open_confirm_maxsz)
481 #define NFS4_dec_open_confirm_sz \
482 (compound_decode_hdr_maxsz + \
483 decode_putfh_maxsz + \
484 decode_open_confirm_maxsz)
485 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
486 encode_sequence_maxsz + \
487 encode_putfh_maxsz + \
488 encode_open_maxsz + \
489 encode_access_maxsz + \
490 encode_getattr_maxsz)
491 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
492 decode_sequence_maxsz + \
493 decode_putfh_maxsz + \
494 decode_open_maxsz + \
495 decode_access_maxsz + \
496 decode_getattr_maxsz)
497 #define NFS4_enc_open_downgrade_sz \
498 (compound_encode_hdr_maxsz + \
499 encode_sequence_maxsz + \
500 encode_putfh_maxsz + \
501 encode_open_downgrade_maxsz + \
502 encode_getattr_maxsz)
503 #define NFS4_dec_open_downgrade_sz \
504 (compound_decode_hdr_maxsz + \
505 decode_sequence_maxsz + \
506 decode_putfh_maxsz + \
507 decode_open_downgrade_maxsz + \
508 decode_getattr_maxsz)
509 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
510 encode_sequence_maxsz + \
511 encode_putfh_maxsz + \
512 encode_close_maxsz + \
513 encode_getattr_maxsz)
514 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
515 decode_sequence_maxsz + \
516 decode_putfh_maxsz + \
517 decode_close_maxsz + \
518 decode_getattr_maxsz)
519 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
520 encode_sequence_maxsz + \
521 encode_putfh_maxsz + \
522 encode_setattr_maxsz + \
523 encode_getattr_maxsz)
524 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
525 decode_sequence_maxsz + \
526 decode_putfh_maxsz + \
527 decode_setattr_maxsz + \
528 decode_getattr_maxsz)
529 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
530 encode_sequence_maxsz + \
531 encode_putfh_maxsz + \
532 encode_fsinfo_maxsz)
533 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
534 decode_sequence_maxsz + \
535 decode_putfh_maxsz + \
536 decode_fsinfo_maxsz)
537 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
538 encode_renew_maxsz)
539 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
540 decode_renew_maxsz)
541 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
542 encode_setclientid_maxsz)
543 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
544 decode_setclientid_maxsz)
545 #define NFS4_enc_setclientid_confirm_sz \
546 (compound_encode_hdr_maxsz + \
547 encode_setclientid_confirm_maxsz)
548 #define NFS4_dec_setclientid_confirm_sz \
549 (compound_decode_hdr_maxsz + \
550 decode_setclientid_confirm_maxsz)
551 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
552 encode_sequence_maxsz + \
553 encode_putfh_maxsz + \
554 encode_lock_maxsz)
555 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
556 decode_sequence_maxsz + \
557 decode_putfh_maxsz + \
558 decode_lock_maxsz)
559 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
560 encode_sequence_maxsz + \
561 encode_putfh_maxsz + \
562 encode_lockt_maxsz)
563 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
564 decode_sequence_maxsz + \
565 decode_putfh_maxsz + \
566 decode_lockt_maxsz)
567 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
570 encode_locku_maxsz)
571 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
572 decode_sequence_maxsz + \
573 decode_putfh_maxsz + \
574 decode_locku_maxsz)
575 #define NFS4_enc_release_lockowner_sz \
576 (compound_encode_hdr_maxsz + \
577 encode_lockowner_maxsz)
578 #define NFS4_dec_release_lockowner_sz \
579 (compound_decode_hdr_maxsz + \
580 decode_lockowner_maxsz)
581 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
582 encode_sequence_maxsz + \
583 encode_putfh_maxsz + \
584 encode_access_maxsz + \
585 encode_getattr_maxsz)
586 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
587 decode_sequence_maxsz + \
588 decode_putfh_maxsz + \
589 decode_access_maxsz + \
590 decode_getattr_maxsz)
591 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
592 encode_sequence_maxsz + \
593 encode_putfh_maxsz + \
594 encode_getattr_maxsz)
595 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_getattr_maxsz)
599 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
600 encode_sequence_maxsz + \
601 encode_putfh_maxsz + \
602 encode_lookup_maxsz + \
603 encode_getattr_maxsz + \
604 encode_getfh_maxsz)
605 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
606 decode_sequence_maxsz + \
607 decode_putfh_maxsz + \
608 decode_lookup_maxsz + \
609 decode_getattr_maxsz + \
610 decode_getfh_maxsz)
611 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
612 encode_sequence_maxsz + \
613 encode_putrootfh_maxsz + \
614 encode_getattr_maxsz + \
615 encode_getfh_maxsz)
616 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
617 decode_sequence_maxsz + \
618 decode_putrootfh_maxsz + \
619 decode_getattr_maxsz + \
620 decode_getfh_maxsz)
621 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
622 encode_sequence_maxsz + \
623 encode_putfh_maxsz + \
624 encode_remove_maxsz)
625 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
626 decode_sequence_maxsz + \
627 decode_putfh_maxsz + \
628 decode_remove_maxsz)
629 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_savefh_maxsz + \
633 encode_putfh_maxsz + \
634 encode_rename_maxsz)
635 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
636 decode_sequence_maxsz + \
637 decode_putfh_maxsz + \
638 decode_savefh_maxsz + \
639 decode_putfh_maxsz + \
640 decode_rename_maxsz)
641 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
642 encode_sequence_maxsz + \
643 encode_putfh_maxsz + \
644 encode_savefh_maxsz + \
645 encode_putfh_maxsz + \
646 encode_link_maxsz + \
647 encode_restorefh_maxsz + \
648 encode_getattr_maxsz)
649 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
652 decode_savefh_maxsz + \
653 decode_putfh_maxsz + \
654 decode_link_maxsz + \
655 decode_restorefh_maxsz + \
656 decode_getattr_maxsz)
657 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
658 encode_sequence_maxsz + \
659 encode_putfh_maxsz + \
660 encode_symlink_maxsz + \
661 encode_getattr_maxsz + \
662 encode_getfh_maxsz)
663 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
664 decode_sequence_maxsz + \
665 decode_putfh_maxsz + \
666 decode_symlink_maxsz + \
667 decode_getattr_maxsz + \
668 decode_getfh_maxsz)
669 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
670 encode_sequence_maxsz + \
671 encode_putfh_maxsz + \
672 encode_create_maxsz + \
673 encode_getfh_maxsz + \
674 encode_getattr_maxsz)
675 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
676 decode_sequence_maxsz + \
677 decode_putfh_maxsz + \
678 decode_create_maxsz + \
679 decode_getfh_maxsz + \
680 decode_getattr_maxsz)
681 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
682 encode_sequence_maxsz + \
683 encode_putfh_maxsz + \
684 encode_getattr_maxsz)
685 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
686 decode_sequence_maxsz + \
687 decode_putfh_maxsz + \
688 decode_getattr_maxsz)
689 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
690 encode_sequence_maxsz + \
691 encode_putfh_maxsz + \
692 encode_statfs_maxsz)
693 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_putfh_maxsz + \
696 decode_statfs_maxsz)
697 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
698 encode_sequence_maxsz + \
699 encode_putfh_maxsz + \
700 encode_getattr_maxsz)
701 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_getattr_maxsz)
705 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
706 encode_sequence_maxsz + \
707 encode_putfh_maxsz + \
708 encode_delegreturn_maxsz + \
709 encode_getattr_maxsz)
710 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
711 decode_sequence_maxsz + \
712 decode_delegreturn_maxsz + \
713 decode_getattr_maxsz)
714 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
715 encode_sequence_maxsz + \
716 encode_putfh_maxsz + \
717 encode_getacl_maxsz)
718 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
719 decode_sequence_maxsz + \
720 decode_putfh_maxsz + \
721 decode_getacl_maxsz)
722 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
723 encode_sequence_maxsz + \
724 encode_putfh_maxsz + \
725 encode_setacl_maxsz)
726 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
727 decode_sequence_maxsz + \
728 decode_putfh_maxsz + \
729 decode_setacl_maxsz)
730 #define NFS4_enc_fs_locations_sz \
731 (compound_encode_hdr_maxsz + \
732 encode_sequence_maxsz + \
733 encode_putfh_maxsz + \
734 encode_lookup_maxsz + \
735 encode_fs_locations_maxsz)
736 #define NFS4_dec_fs_locations_sz \
737 (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_lookup_maxsz + \
741 decode_fs_locations_maxsz)
742 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
743 encode_sequence_maxsz + \
744 encode_putfh_maxsz + \
745 encode_secinfo_maxsz)
746 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
747 decode_sequence_maxsz + \
748 decode_putfh_maxsz + \
749 decode_secinfo_maxsz)
750 #if defined(CONFIG_NFS_V4_1)
751 #define NFS4_enc_bind_conn_to_session_sz \
752 (compound_encode_hdr_maxsz + \
753 encode_bind_conn_to_session_maxsz)
754 #define NFS4_dec_bind_conn_to_session_sz \
755 (compound_decode_hdr_maxsz + \
756 decode_bind_conn_to_session_maxsz)
757 #define NFS4_enc_exchange_id_sz \
758 (compound_encode_hdr_maxsz + \
759 encode_exchange_id_maxsz)
760 #define NFS4_dec_exchange_id_sz \
761 (compound_decode_hdr_maxsz + \
762 decode_exchange_id_maxsz)
763 #define NFS4_enc_create_session_sz \
764 (compound_encode_hdr_maxsz + \
765 encode_create_session_maxsz)
766 #define NFS4_dec_create_session_sz \
767 (compound_decode_hdr_maxsz + \
768 decode_create_session_maxsz)
769 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
770 encode_destroy_session_maxsz)
771 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
772 decode_destroy_session_maxsz)
773 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
774 encode_destroy_clientid_maxsz)
775 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
776 decode_destroy_clientid_maxsz)
777 #define NFS4_enc_sequence_sz \
778 (compound_decode_hdr_maxsz + \
779 encode_sequence_maxsz)
780 #define NFS4_dec_sequence_sz \
781 (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz)
783 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
784 encode_sequence_maxsz + \
785 encode_putrootfh_maxsz + \
786 encode_fsinfo_maxsz)
787 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
788 decode_sequence_maxsz + \
789 decode_putrootfh_maxsz + \
790 decode_fsinfo_maxsz)
791 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
792 encode_sequence_maxsz + \
793 encode_reclaim_complete_maxsz)
794 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
795 decode_sequence_maxsz + \
796 decode_reclaim_complete_maxsz)
797 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
798 encode_sequence_maxsz + \
799 encode_putfh_maxsz + \
800 encode_getdevicelist_maxsz)
801 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
802 decode_sequence_maxsz + \
803 decode_putfh_maxsz + \
804 decode_getdevicelist_maxsz)
805 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
806 encode_sequence_maxsz +\
807 encode_getdeviceinfo_maxsz)
808 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
809 decode_sequence_maxsz + \
810 decode_getdeviceinfo_maxsz)
811 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
812 encode_sequence_maxsz + \
813 encode_putfh_maxsz + \
814 encode_layoutget_maxsz)
815 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
816 decode_sequence_maxsz + \
817 decode_putfh_maxsz + \
818 decode_layoutget_maxsz)
819 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
820 encode_sequence_maxsz +\
821 encode_putfh_maxsz + \
822 encode_layoutcommit_maxsz + \
823 encode_getattr_maxsz)
824 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putfh_maxsz + \
827 decode_layoutcommit_maxsz + \
828 decode_getattr_maxsz)
829 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
830 encode_sequence_maxsz + \
831 encode_putfh_maxsz + \
832 encode_layoutreturn_maxsz)
833 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
834 decode_sequence_maxsz + \
835 decode_putfh_maxsz + \
836 decode_layoutreturn_maxsz)
837 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
838 encode_sequence_maxsz + \
839 encode_putrootfh_maxsz +\
840 encode_secinfo_no_name_maxsz)
841 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
842 decode_sequence_maxsz + \
843 decode_putrootfh_maxsz + \
844 decode_secinfo_no_name_maxsz)
845 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
846 encode_sequence_maxsz + \
847 encode_test_stateid_maxsz)
848 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
849 decode_sequence_maxsz + \
850 decode_test_stateid_maxsz)
851 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
852 encode_sequence_maxsz + \
853 encode_free_stateid_maxsz)
854 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
855 decode_sequence_maxsz + \
856 decode_free_stateid_maxsz)
857
858 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
859 compound_encode_hdr_maxsz +
860 encode_sequence_maxsz +
861 encode_putfh_maxsz +
862 encode_getattr_maxsz) *
863 XDR_UNIT);
864
865 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
866 compound_decode_hdr_maxsz +
867 decode_sequence_maxsz +
868 decode_putfh_maxsz) *
869 XDR_UNIT);
870
871 const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
872 compound_decode_hdr_maxsz +
873 decode_sequence_maxsz) *
874 XDR_UNIT);
875 EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
876 #endif /* CONFIG_NFS_V4_1 */
877
878 static const umode_t nfs_type2fmt[] = {
879 [NF4BAD] = 0,
880 [NF4REG] = S_IFREG,
881 [NF4DIR] = S_IFDIR,
882 [NF4BLK] = S_IFBLK,
883 [NF4CHR] = S_IFCHR,
884 [NF4LNK] = S_IFLNK,
885 [NF4SOCK] = S_IFSOCK,
886 [NF4FIFO] = S_IFIFO,
887 [NF4ATTRDIR] = 0,
888 [NF4NAMEDATTR] = 0,
889 };
890
891 struct compound_hdr {
892 int32_t status;
893 uint32_t nops;
894 __be32 * nops_p;
895 uint32_t taglen;
896 char * tag;
897 uint32_t replen; /* expected reply words */
898 u32 minorversion;
899 };
900
901 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
902 {
903 __be32 *p = xdr_reserve_space(xdr, nbytes);
904 BUG_ON(!p);
905 return p;
906 }
907
908 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
909 {
910 __be32 *p;
911
912 p = xdr_reserve_space(xdr, len);
913 xdr_encode_opaque_fixed(p, buf, len);
914 }
915
916 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
917 {
918 __be32 *p;
919
920 p = reserve_space(xdr, 4 + len);
921 xdr_encode_opaque(p, str, len);
922 }
923
924 static void encode_uint32(struct xdr_stream *xdr, u32 n)
925 {
926 __be32 *p;
927
928 p = reserve_space(xdr, 4);
929 *p = cpu_to_be32(n);
930 }
931
932 static void encode_uint64(struct xdr_stream *xdr, u64 n)
933 {
934 __be32 *p;
935
936 p = reserve_space(xdr, 8);
937 xdr_encode_hyper(p, n);
938 }
939
940 static void encode_nfs4_seqid(struct xdr_stream *xdr,
941 const struct nfs_seqid *seqid)
942 {
943 encode_uint32(xdr, seqid->sequence->counter);
944 }
945
946 static void encode_compound_hdr(struct xdr_stream *xdr,
947 struct rpc_rqst *req,
948 struct compound_hdr *hdr)
949 {
950 __be32 *p;
951 struct rpc_auth *auth = req->rq_cred->cr_auth;
952
953 /* initialize running count of expected bytes in reply.
954 * NOTE: the replied tag SHOULD be the same is the one sent,
955 * but this is not required as a MUST for the server to do so. */
956 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
957
958 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
959 encode_string(xdr, hdr->taglen, hdr->tag);
960 p = reserve_space(xdr, 8);
961 *p++ = cpu_to_be32(hdr->minorversion);
962 hdr->nops_p = p;
963 *p = cpu_to_be32(hdr->nops);
964 }
965
966 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
967 uint32_t replen,
968 struct compound_hdr *hdr)
969 {
970 encode_uint32(xdr, op);
971 hdr->nops++;
972 hdr->replen += replen;
973 }
974
975 static void encode_nops(struct compound_hdr *hdr)
976 {
977 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
978 *hdr->nops_p = htonl(hdr->nops);
979 }
980
981 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
982 {
983 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
984 }
985
986 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
987 {
988 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
989 }
990
991 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
992 const struct nfs4_label *label,
993 const struct nfs_server *server)
994 {
995 char owner_name[IDMAP_NAMESZ];
996 char owner_group[IDMAP_NAMESZ];
997 int owner_namelen = 0;
998 int owner_grouplen = 0;
999 __be32 *p;
1000 __be32 *q;
1001 int len;
1002 uint32_t bmval_len = 2;
1003 uint32_t bmval0 = 0;
1004 uint32_t bmval1 = 0;
1005 uint32_t bmval2 = 0;
1006
1007 /*
1008 * We reserve enough space to write the entire attribute buffer at once.
1009 * In the worst-case, this would be
1010 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
1011 * = 40 bytes, plus any contribution from variable-length fields
1012 * such as owner/group.
1013 */
1014 len = 8;
1015
1016 /* Sigh */
1017 if (iap->ia_valid & ATTR_SIZE)
1018 len += 8;
1019 if (iap->ia_valid & ATTR_MODE)
1020 len += 4;
1021 if (iap->ia_valid & ATTR_UID) {
1022 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1023 if (owner_namelen < 0) {
1024 dprintk("nfs: couldn't resolve uid %d to string\n",
1025 from_kuid(&init_user_ns, iap->ia_uid));
1026 /* XXX */
1027 strcpy(owner_name, "nobody");
1028 owner_namelen = sizeof("nobody") - 1;
1029 /* goto out; */
1030 }
1031 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1032 }
1033 if (iap->ia_valid & ATTR_GID) {
1034 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1035 if (owner_grouplen < 0) {
1036 dprintk("nfs: couldn't resolve gid %d to string\n",
1037 from_kgid(&init_user_ns, iap->ia_gid));
1038 strcpy(owner_group, "nobody");
1039 owner_grouplen = sizeof("nobody") - 1;
1040 /* goto out; */
1041 }
1042 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1043 }
1044 if (iap->ia_valid & ATTR_ATIME_SET)
1045 len += 16;
1046 else if (iap->ia_valid & ATTR_ATIME)
1047 len += 4;
1048 if (iap->ia_valid & ATTR_MTIME_SET)
1049 len += 16;
1050 else if (iap->ia_valid & ATTR_MTIME)
1051 len += 4;
1052 if (label) {
1053 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1054 bmval_len = 3;
1055 }
1056
1057 len += bmval_len << 2;
1058 p = reserve_space(xdr, len);
1059
1060 /*
1061 * We write the bitmap length now, but leave the bitmap and the attribute
1062 * buffer length to be backfilled at the end of this routine.
1063 */
1064 *p++ = cpu_to_be32(bmval_len);
1065 q = p;
1066 /* Skip bitmap entries + attrlen */
1067 p += bmval_len + 1;
1068
1069 if (iap->ia_valid & ATTR_SIZE) {
1070 bmval0 |= FATTR4_WORD0_SIZE;
1071 p = xdr_encode_hyper(p, iap->ia_size);
1072 }
1073 if (iap->ia_valid & ATTR_MODE) {
1074 bmval1 |= FATTR4_WORD1_MODE;
1075 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1076 }
1077 if (iap->ia_valid & ATTR_UID) {
1078 bmval1 |= FATTR4_WORD1_OWNER;
1079 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1080 }
1081 if (iap->ia_valid & ATTR_GID) {
1082 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1083 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1084 }
1085 if (iap->ia_valid & ATTR_ATIME_SET) {
1086 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1087 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1088 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1089 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1090 }
1091 else if (iap->ia_valid & ATTR_ATIME) {
1092 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1093 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1094 }
1095 if (iap->ia_valid & ATTR_MTIME_SET) {
1096 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1097 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1098 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1099 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1100 }
1101 else if (iap->ia_valid & ATTR_MTIME) {
1102 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1103 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1104 }
1105 if (label) {
1106 bmval2 |= FATTR4_WORD2_SECURITY_LABEL;
1107 *p++ = cpu_to_be32(label->lfs);
1108 *p++ = cpu_to_be32(label->pi);
1109 *p++ = cpu_to_be32(label->len);
1110 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1111 }
1112
1113 /*
1114 * Now we backfill the bitmap and the attribute buffer length.
1115 */
1116 if (len != ((char *)p - (char *)q) + 4) {
1117 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1118 len, ((char *)p - (char *)q) + 4);
1119 BUG();
1120 }
1121 *q++ = htonl(bmval0);
1122 *q++ = htonl(bmval1);
1123 if (bmval_len == 3)
1124 *q++ = htonl(bmval2);
1125 len = (char *)p - (char *)(q + 1);
1126 *q = htonl(len);
1127
1128 /* out: */
1129 }
1130
1131 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1132 {
1133 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1134 encode_uint32(xdr, access);
1135 }
1136
1137 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1138 {
1139 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1140 encode_nfs4_seqid(xdr, arg->seqid);
1141 encode_nfs4_stateid(xdr, arg->stateid);
1142 }
1143
1144 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1145 {
1146 __be32 *p;
1147
1148 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1149 p = reserve_space(xdr, 12);
1150 p = xdr_encode_hyper(p, args->offset);
1151 *p = cpu_to_be32(args->count);
1152 }
1153
1154 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1155 {
1156 __be32 *p;
1157
1158 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1159 encode_uint32(xdr, create->ftype);
1160
1161 switch (create->ftype) {
1162 case NF4LNK:
1163 p = reserve_space(xdr, 4);
1164 *p = cpu_to_be32(create->u.symlink.len);
1165 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1166 break;
1167
1168 case NF4BLK: case NF4CHR:
1169 p = reserve_space(xdr, 8);
1170 *p++ = cpu_to_be32(create->u.device.specdata1);
1171 *p = cpu_to_be32(create->u.device.specdata2);
1172 break;
1173
1174 default:
1175 break;
1176 }
1177
1178 encode_string(xdr, create->name->len, create->name->name);
1179 encode_attrs(xdr, create->attrs, create->label, create->server);
1180 }
1181
1182 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1183 {
1184 __be32 *p;
1185
1186 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1187 p = reserve_space(xdr, 8);
1188 *p++ = cpu_to_be32(1);
1189 *p = cpu_to_be32(bitmap);
1190 }
1191
1192 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1193 {
1194 __be32 *p;
1195
1196 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1197 p = reserve_space(xdr, 12);
1198 *p++ = cpu_to_be32(2);
1199 *p++ = cpu_to_be32(bm0);
1200 *p = cpu_to_be32(bm1);
1201 }
1202
1203 static void
1204 encode_getattr_three(struct xdr_stream *xdr,
1205 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1206 struct compound_hdr *hdr)
1207 {
1208 __be32 *p;
1209
1210 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1211 if (bm2) {
1212 p = reserve_space(xdr, 16);
1213 *p++ = cpu_to_be32(3);
1214 *p++ = cpu_to_be32(bm0);
1215 *p++ = cpu_to_be32(bm1);
1216 *p = cpu_to_be32(bm2);
1217 } else if (bm1) {
1218 p = reserve_space(xdr, 12);
1219 *p++ = cpu_to_be32(2);
1220 *p++ = cpu_to_be32(bm0);
1221 *p = cpu_to_be32(bm1);
1222 } else {
1223 p = reserve_space(xdr, 8);
1224 *p++ = cpu_to_be32(1);
1225 *p = cpu_to_be32(bm0);
1226 }
1227 }
1228
1229 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1230 {
1231 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1232 bitmask[1] & nfs4_fattr_bitmap[1],
1233 bitmask[2] & nfs4_fattr_bitmap[2],
1234 hdr);
1235 }
1236
1237 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1238 const u32 *open_bitmap,
1239 struct compound_hdr *hdr)
1240 {
1241 encode_getattr_three(xdr,
1242 bitmask[0] & open_bitmap[0],
1243 bitmask[1] & open_bitmap[1],
1244 bitmask[2] & open_bitmap[2],
1245 hdr);
1246 }
1247
1248 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1249 {
1250 encode_getattr_three(xdr,
1251 bitmask[0] & nfs4_fsinfo_bitmap[0],
1252 bitmask[1] & nfs4_fsinfo_bitmap[1],
1253 bitmask[2] & nfs4_fsinfo_bitmap[2],
1254 hdr);
1255 }
1256
1257 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1258 {
1259 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1260 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1261 }
1262
1263 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1264 {
1265 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1266 }
1267
1268 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1269 {
1270 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1271 encode_string(xdr, name->len, name->name);
1272 }
1273
1274 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1275 {
1276 if (fl->fl_type == F_RDLCK)
1277 return block ? NFS4_READW_LT : NFS4_READ_LT;
1278 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1279 }
1280
1281 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1282 {
1283 if (fl->fl_end == OFFSET_MAX)
1284 return ~(uint64_t)0;
1285 return fl->fl_end - fl->fl_start + 1;
1286 }
1287
1288 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1289 {
1290 __be32 *p;
1291
1292 p = reserve_space(xdr, 32);
1293 p = xdr_encode_hyper(p, lowner->clientid);
1294 *p++ = cpu_to_be32(20);
1295 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1296 *p++ = cpu_to_be32(lowner->s_dev);
1297 xdr_encode_hyper(p, lowner->id);
1298 }
1299
1300 /*
1301 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1302 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1303 */
1304 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1305 {
1306 __be32 *p;
1307
1308 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1309 p = reserve_space(xdr, 28);
1310 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1311 *p++ = cpu_to_be32(args->reclaim);
1312 p = xdr_encode_hyper(p, args->fl->fl_start);
1313 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1314 *p = cpu_to_be32(args->new_lock_owner);
1315 if (args->new_lock_owner){
1316 encode_nfs4_seqid(xdr, args->open_seqid);
1317 encode_nfs4_stateid(xdr, args->open_stateid);
1318 encode_nfs4_seqid(xdr, args->lock_seqid);
1319 encode_lockowner(xdr, &args->lock_owner);
1320 }
1321 else {
1322 encode_nfs4_stateid(xdr, args->lock_stateid);
1323 encode_nfs4_seqid(xdr, args->lock_seqid);
1324 }
1325 }
1326
1327 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1328 {
1329 __be32 *p;
1330
1331 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1332 p = reserve_space(xdr, 20);
1333 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1334 p = xdr_encode_hyper(p, args->fl->fl_start);
1335 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1336 encode_lockowner(xdr, &args->lock_owner);
1337 }
1338
1339 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1340 {
1341 __be32 *p;
1342
1343 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1344 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1345 encode_nfs4_seqid(xdr, args->seqid);
1346 encode_nfs4_stateid(xdr, args->stateid);
1347 p = reserve_space(xdr, 16);
1348 p = xdr_encode_hyper(p, args->fl->fl_start);
1349 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1350 }
1351
1352 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1353 {
1354 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1355 encode_lockowner(xdr, lowner);
1356 }
1357
1358 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1359 {
1360 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1361 encode_string(xdr, name->len, name->name);
1362 }
1363
1364 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1365 {
1366 __be32 *p;
1367
1368 p = reserve_space(xdr, 8);
1369 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1370 case FMODE_READ:
1371 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1372 break;
1373 case FMODE_WRITE:
1374 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1375 break;
1376 case FMODE_READ|FMODE_WRITE:
1377 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1378 break;
1379 default:
1380 *p++ = cpu_to_be32(0);
1381 }
1382 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1383 }
1384
1385 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1386 {
1387 __be32 *p;
1388 /*
1389 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1390 * owner 4 = 32
1391 */
1392 encode_nfs4_seqid(xdr, arg->seqid);
1393 encode_share_access(xdr, arg->fmode);
1394 p = reserve_space(xdr, 36);
1395 p = xdr_encode_hyper(p, arg->clientid);
1396 *p++ = cpu_to_be32(24);
1397 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1398 *p++ = cpu_to_be32(arg->server->s_dev);
1399 *p++ = cpu_to_be32(arg->id.uniquifier);
1400 xdr_encode_hyper(p, arg->id.create_time);
1401 }
1402
1403 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1404 {
1405 struct iattr dummy;
1406 __be32 *p;
1407
1408 p = reserve_space(xdr, 4);
1409 switch(arg->createmode) {
1410 case NFS4_CREATE_UNCHECKED:
1411 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1412 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1413 break;
1414 case NFS4_CREATE_GUARDED:
1415 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1416 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1417 break;
1418 case NFS4_CREATE_EXCLUSIVE:
1419 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1420 encode_nfs4_verifier(xdr, &arg->u.verifier);
1421 break;
1422 case NFS4_CREATE_EXCLUSIVE4_1:
1423 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1424 encode_nfs4_verifier(xdr, &arg->u.verifier);
1425 dummy.ia_valid = 0;
1426 encode_attrs(xdr, &dummy, arg->label, arg->server);
1427 }
1428 }
1429
1430 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1431 {
1432 __be32 *p;
1433
1434 p = reserve_space(xdr, 4);
1435 switch (arg->open_flags & O_CREAT) {
1436 case 0:
1437 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1438 break;
1439 default:
1440 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1441 encode_createmode(xdr, arg);
1442 }
1443 }
1444
1445 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1446 {
1447 __be32 *p;
1448
1449 p = reserve_space(xdr, 4);
1450 switch (delegation_type) {
1451 case 0:
1452 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1453 break;
1454 case FMODE_READ:
1455 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1456 break;
1457 case FMODE_WRITE|FMODE_READ:
1458 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1459 break;
1460 default:
1461 BUG();
1462 }
1463 }
1464
1465 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1466 {
1467 __be32 *p;
1468
1469 p = reserve_space(xdr, 4);
1470 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1471 encode_string(xdr, name->len, name->name);
1472 }
1473
1474 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1475 {
1476 __be32 *p;
1477
1478 p = reserve_space(xdr, 4);
1479 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1480 encode_delegation_type(xdr, type);
1481 }
1482
1483 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1484 {
1485 __be32 *p;
1486
1487 p = reserve_space(xdr, 4);
1488 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1489 encode_nfs4_stateid(xdr, stateid);
1490 encode_string(xdr, name->len, name->name);
1491 }
1492
1493 static inline void encode_claim_fh(struct xdr_stream *xdr)
1494 {
1495 __be32 *p;
1496
1497 p = reserve_space(xdr, 4);
1498 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1499 }
1500
1501 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1502 {
1503 __be32 *p;
1504
1505 p = reserve_space(xdr, 4);
1506 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1507 encode_nfs4_stateid(xdr, stateid);
1508 }
1509
1510 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1511 {
1512 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1513 encode_openhdr(xdr, arg);
1514 encode_opentype(xdr, arg);
1515 switch (arg->claim) {
1516 case NFS4_OPEN_CLAIM_NULL:
1517 encode_claim_null(xdr, arg->name);
1518 break;
1519 case NFS4_OPEN_CLAIM_PREVIOUS:
1520 encode_claim_previous(xdr, arg->u.delegation_type);
1521 break;
1522 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1523 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1524 break;
1525 case NFS4_OPEN_CLAIM_FH:
1526 encode_claim_fh(xdr);
1527 break;
1528 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1529 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1530 break;
1531 default:
1532 BUG();
1533 }
1534 }
1535
1536 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1537 {
1538 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1539 encode_nfs4_stateid(xdr, arg->stateid);
1540 encode_nfs4_seqid(xdr, arg->seqid);
1541 }
1542
1543 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1544 {
1545 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1546 encode_nfs4_stateid(xdr, arg->stateid);
1547 encode_nfs4_seqid(xdr, arg->seqid);
1548 encode_share_access(xdr, arg->fmode);
1549 }
1550
1551 static void
1552 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1553 {
1554 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1555 encode_string(xdr, fh->size, fh->data);
1556 }
1557
1558 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1559 {
1560 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1561 }
1562
1563 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1564 {
1565 __be32 *p;
1566
1567 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1568 encode_nfs4_stateid(xdr, &args->stateid);
1569
1570 p = reserve_space(xdr, 12);
1571 p = xdr_encode_hyper(p, args->offset);
1572 *p = cpu_to_be32(args->count);
1573 }
1574
1575 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1576 {
1577 uint32_t attrs[3] = {
1578 FATTR4_WORD0_RDATTR_ERROR,
1579 FATTR4_WORD1_MOUNTED_ON_FILEID,
1580 };
1581 uint32_t dircount = readdir->count >> 1;
1582 __be32 *p, verf[2];
1583
1584 if (readdir->plus) {
1585 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1586 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1587 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1588 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1589 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1590 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1591 dircount >>= 1;
1592 }
1593 /* Use mounted_on_fileid only if the server supports it */
1594 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1595 attrs[0] |= FATTR4_WORD0_FILEID;
1596
1597 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1598 encode_uint64(xdr, readdir->cookie);
1599 encode_nfs4_verifier(xdr, &readdir->verifier);
1600 p = reserve_space(xdr, encode_readdir_space);
1601 *p++ = cpu_to_be32(dircount);
1602 *p++ = cpu_to_be32(readdir->count);
1603 *p++ = cpu_to_be32(encode_readdir_bitmask_sz);
1604 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1605 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1606 if (encode_readdir_bitmask_sz > 2) {
1607 if (hdr->minorversion > 1)
1608 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1609 p++, *p++ = cpu_to_be32(attrs[2] & readdir->bitmask[2]);
1610 }
1611 memcpy(verf, readdir->verifier.data, sizeof(verf));
1612
1613 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1614 __func__,
1615 (unsigned long long)readdir->cookie,
1616 verf[0], verf[1],
1617 attrs[0] & readdir->bitmask[0],
1618 attrs[1] & readdir->bitmask[1],
1619 attrs[2] & readdir->bitmask[2]);
1620 }
1621
1622 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1623 {
1624 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1625 }
1626
1627 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1628 {
1629 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1630 encode_string(xdr, name->len, name->name);
1631 }
1632
1633 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1634 {
1635 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1636 encode_string(xdr, oldname->len, oldname->name);
1637 encode_string(xdr, newname->len, newname->name);
1638 }
1639
1640 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1641 struct compound_hdr *hdr)
1642 {
1643 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1644 encode_uint64(xdr, clid);
1645 }
1646
1647 static void
1648 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1649 {
1650 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1651 }
1652
1653 static void
1654 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1655 {
1656 __be32 *p;
1657
1658 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1659 encode_nfs4_stateid(xdr, &zero_stateid);
1660 p = reserve_space(xdr, 2*4);
1661 *p++ = cpu_to_be32(1);
1662 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1663 p = reserve_space(xdr, 4);
1664 *p = cpu_to_be32(arg->acl_len);
1665 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1666 }
1667
1668 static void
1669 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1670 {
1671 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1672 }
1673
1674 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1675 {
1676 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1677 encode_nfs4_stateid(xdr, &arg->stateid);
1678 encode_attrs(xdr, arg->iap, arg->label, server);
1679 }
1680
1681 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1682 {
1683 __be32 *p;
1684
1685 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1686 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1687
1688 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1689 p = reserve_space(xdr, 4);
1690 *p = cpu_to_be32(setclientid->sc_prog);
1691 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1692 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1693 p = reserve_space(xdr, 4);
1694 *p = cpu_to_be32(setclientid->sc_cb_ident);
1695 }
1696
1697 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1698 {
1699 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1700 decode_setclientid_confirm_maxsz, hdr);
1701 encode_uint64(xdr, arg->clientid);
1702 encode_nfs4_verifier(xdr, &arg->confirm);
1703 }
1704
1705 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1706 {
1707 __be32 *p;
1708
1709 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1710 encode_nfs4_stateid(xdr, &args->stateid);
1711
1712 p = reserve_space(xdr, 16);
1713 p = xdr_encode_hyper(p, args->offset);
1714 *p++ = cpu_to_be32(args->stable);
1715 *p = cpu_to_be32(args->count);
1716
1717 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1718 }
1719
1720 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1721 {
1722 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1723 encode_nfs4_stateid(xdr, stateid);
1724 }
1725
1726 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1727 {
1728 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1729 encode_string(xdr, name->len, name->name);
1730 }
1731
1732 #if defined(CONFIG_NFS_V4_1)
1733 /* NFSv4.1 operations */
1734 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1735 struct nfs4_session *session,
1736 struct compound_hdr *hdr)
1737 {
1738 __be32 *p;
1739
1740 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1741 decode_bind_conn_to_session_maxsz, hdr);
1742 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1743 p = xdr_reserve_space(xdr, 8);
1744 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1745 *p = 0; /* use_conn_in_rdma_mode = False */
1746 }
1747
1748 static void encode_exchange_id(struct xdr_stream *xdr,
1749 struct nfs41_exchange_id_args *args,
1750 struct compound_hdr *hdr)
1751 {
1752 __be32 *p;
1753 char impl_name[IMPL_NAME_LIMIT];
1754 int len = 0;
1755
1756 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1757 encode_nfs4_verifier(xdr, args->verifier);
1758
1759 encode_string(xdr, args->id_len, args->id);
1760
1761 p = reserve_space(xdr, 12);
1762 *p++ = cpu_to_be32(args->flags);
1763 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1764
1765 if (send_implementation_id &&
1766 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1767 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1768 <= sizeof(impl_name) + 1)
1769 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1770 utsname()->sysname, utsname()->release,
1771 utsname()->version, utsname()->machine);
1772
1773 if (len > 0) {
1774 *p = cpu_to_be32(1); /* implementation id array length=1 */
1775
1776 encode_string(xdr,
1777 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1778 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1779 encode_string(xdr, len, impl_name);
1780 /* just send zeros for nii_date - the date is in nii_name */
1781 p = reserve_space(xdr, 12);
1782 p = xdr_encode_hyper(p, 0);
1783 *p = cpu_to_be32(0);
1784 } else
1785 *p = cpu_to_be32(0); /* implementation id array length=0 */
1786 }
1787
1788 static void encode_create_session(struct xdr_stream *xdr,
1789 struct nfs41_create_session_args *args,
1790 struct compound_hdr *hdr)
1791 {
1792 __be32 *p;
1793 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1794 uint32_t len;
1795 struct nfs_client *clp = args->client;
1796 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1797 u32 max_resp_sz_cached;
1798
1799 /*
1800 * Assumes OPEN is the biggest non-idempotent compound.
1801 * 2 is the verifier.
1802 */
1803 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1804 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1805
1806 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1807 clp->cl_ipaddr);
1808
1809 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1810 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1811 p = xdr_encode_hyper(p, clp->cl_clientid);
1812 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1813 *p++ = cpu_to_be32(args->flags); /*flags */
1814
1815 /* Fore Channel */
1816 *p++ = cpu_to_be32(0); /* header padding size */
1817 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1818 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1819 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1820 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1821 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1822 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1823
1824 /* Back Channel */
1825 *p++ = cpu_to_be32(0); /* header padding size */
1826 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1827 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1828 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1829 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1830 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1831 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1832
1833 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1834 *p++ = cpu_to_be32(1);
1835 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1836
1837 /* authsys_parms rfc1831 */
1838 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1839 p = xdr_encode_opaque(p, machine_name, len);
1840 *p++ = cpu_to_be32(0); /* UID */
1841 *p++ = cpu_to_be32(0); /* GID */
1842 *p = cpu_to_be32(0); /* No more gids */
1843 }
1844
1845 static void encode_destroy_session(struct xdr_stream *xdr,
1846 struct nfs4_session *session,
1847 struct compound_hdr *hdr)
1848 {
1849 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1850 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1851 }
1852
1853 static void encode_destroy_clientid(struct xdr_stream *xdr,
1854 uint64_t clientid,
1855 struct compound_hdr *hdr)
1856 {
1857 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1858 encode_uint64(xdr, clientid);
1859 }
1860
1861 static void encode_reclaim_complete(struct xdr_stream *xdr,
1862 struct nfs41_reclaim_complete_args *args,
1863 struct compound_hdr *hdr)
1864 {
1865 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1866 encode_uint32(xdr, args->one_fs);
1867 }
1868 #endif /* CONFIG_NFS_V4_1 */
1869
1870 static void encode_sequence(struct xdr_stream *xdr,
1871 const struct nfs4_sequence_args *args,
1872 struct compound_hdr *hdr)
1873 {
1874 #if defined(CONFIG_NFS_V4_1)
1875 struct nfs4_session *session;
1876 struct nfs4_slot_table *tp;
1877 struct nfs4_slot *slot = args->sa_slot;
1878 __be32 *p;
1879
1880 if (slot == NULL)
1881 return;
1882
1883 tp = slot->table;
1884 session = tp->session;
1885
1886 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1887
1888 /*
1889 * Sessionid + seqid + slotid + max slotid + cache_this
1890 */
1891 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1892 "max_slotid=%d cache_this=%d\n",
1893 __func__,
1894 ((u32 *)session->sess_id.data)[0],
1895 ((u32 *)session->sess_id.data)[1],
1896 ((u32 *)session->sess_id.data)[2],
1897 ((u32 *)session->sess_id.data)[3],
1898 slot->seq_nr, slot->slot_nr,
1899 tp->highest_used_slotid, args->sa_cache_this);
1900 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1901 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1902 *p++ = cpu_to_be32(slot->seq_nr);
1903 *p++ = cpu_to_be32(slot->slot_nr);
1904 *p++ = cpu_to_be32(tp->highest_used_slotid);
1905 *p = cpu_to_be32(args->sa_cache_this);
1906 #endif /* CONFIG_NFS_V4_1 */
1907 }
1908
1909 #ifdef CONFIG_NFS_V4_1
1910 static void
1911 encode_getdevicelist(struct xdr_stream *xdr,
1912 const struct nfs4_getdevicelist_args *args,
1913 struct compound_hdr *hdr)
1914 {
1915 __be32 *p;
1916 nfs4_verifier dummy = {
1917 .data = "dummmmmy",
1918 };
1919
1920 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1921 p = reserve_space(xdr, 16);
1922 *p++ = cpu_to_be32(args->layoutclass);
1923 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1924 xdr_encode_hyper(p, 0ULL); /* cookie */
1925 encode_nfs4_verifier(xdr, &dummy);
1926 }
1927
1928 static void
1929 encode_getdeviceinfo(struct xdr_stream *xdr,
1930 const struct nfs4_getdeviceinfo_args *args,
1931 struct compound_hdr *hdr)
1932 {
1933 __be32 *p;
1934
1935 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1936 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1937 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1938 NFS4_DEVICEID4_SIZE);
1939 *p++ = cpu_to_be32(args->pdev->layout_type);
1940 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1941 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1942 }
1943
1944 static void
1945 encode_layoutget(struct xdr_stream *xdr,
1946 const struct nfs4_layoutget_args *args,
1947 struct compound_hdr *hdr)
1948 {
1949 __be32 *p;
1950
1951 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1952 p = reserve_space(xdr, 36);
1953 *p++ = cpu_to_be32(0); /* Signal layout available */
1954 *p++ = cpu_to_be32(args->type);
1955 *p++ = cpu_to_be32(args->range.iomode);
1956 p = xdr_encode_hyper(p, args->range.offset);
1957 p = xdr_encode_hyper(p, args->range.length);
1958 p = xdr_encode_hyper(p, args->minlength);
1959 encode_nfs4_stateid(xdr, &args->stateid);
1960 encode_uint32(xdr, args->maxcount);
1961
1962 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1963 __func__,
1964 args->type,
1965 args->range.iomode,
1966 (unsigned long)args->range.offset,
1967 (unsigned long)args->range.length,
1968 args->maxcount);
1969 }
1970
1971 static int
1972 encode_layoutcommit(struct xdr_stream *xdr,
1973 struct inode *inode,
1974 const struct nfs4_layoutcommit_args *args,
1975 struct compound_hdr *hdr)
1976 {
1977 __be32 *p;
1978
1979 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1980 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1981
1982 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1983 p = reserve_space(xdr, 20);
1984 /* Only whole file layouts */
1985 p = xdr_encode_hyper(p, 0); /* offset */
1986 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1987 *p = cpu_to_be32(0); /* reclaim */
1988 encode_nfs4_stateid(xdr, &args->stateid);
1989 p = reserve_space(xdr, 20);
1990 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1991 p = xdr_encode_hyper(p, args->lastbytewritten);
1992 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1993 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1994
1995 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1996 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1997 NFS_I(inode)->layout, xdr, args);
1998 else
1999 encode_uint32(xdr, 0); /* no layout-type payload */
2000
2001 return 0;
2002 }
2003
2004 static void
2005 encode_layoutreturn(struct xdr_stream *xdr,
2006 const struct nfs4_layoutreturn_args *args,
2007 struct compound_hdr *hdr)
2008 {
2009 __be32 *p;
2010
2011 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2012 p = reserve_space(xdr, 16);
2013 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2014 *p++ = cpu_to_be32(args->layout_type);
2015 *p++ = cpu_to_be32(IOMODE_ANY);
2016 *p = cpu_to_be32(RETURN_FILE);
2017 p = reserve_space(xdr, 16);
2018 p = xdr_encode_hyper(p, 0);
2019 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
2020 spin_lock(&args->inode->i_lock);
2021 encode_nfs4_stateid(xdr, &args->stateid);
2022 spin_unlock(&args->inode->i_lock);
2023 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2024 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2025 NFS_I(args->inode)->layout, xdr, args);
2026 } else
2027 encode_uint32(xdr, 0);
2028 }
2029
2030 static int
2031 encode_secinfo_no_name(struct xdr_stream *xdr,
2032 const struct nfs41_secinfo_no_name_args *args,
2033 struct compound_hdr *hdr)
2034 {
2035 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2036 encode_uint32(xdr, args->style);
2037 return 0;
2038 }
2039
2040 static void encode_test_stateid(struct xdr_stream *xdr,
2041 struct nfs41_test_stateid_args *args,
2042 struct compound_hdr *hdr)
2043 {
2044 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2045 encode_uint32(xdr, 1);
2046 encode_nfs4_stateid(xdr, args->stateid);
2047 }
2048
2049 static void encode_free_stateid(struct xdr_stream *xdr,
2050 struct nfs41_free_stateid_args *args,
2051 struct compound_hdr *hdr)
2052 {
2053 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2054 encode_nfs4_stateid(xdr, &args->stateid);
2055 }
2056 #endif /* CONFIG_NFS_V4_1 */
2057
2058 /*
2059 * END OF "GENERIC" ENCODE ROUTINES.
2060 */
2061
2062 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2063 {
2064 #if defined(CONFIG_NFS_V4_1)
2065
2066 if (args->sa_slot)
2067 return args->sa_slot->table->session->clp->cl_mvops->minor_version;
2068 #endif /* CONFIG_NFS_V4_1 */
2069 return 0;
2070 }
2071
2072 /*
2073 * Encode an ACCESS request
2074 */
2075 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2076 const struct nfs4_accessargs *args)
2077 {
2078 struct compound_hdr hdr = {
2079 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2080 };
2081
2082 encode_compound_hdr(xdr, req, &hdr);
2083 encode_sequence(xdr, &args->seq_args, &hdr);
2084 encode_putfh(xdr, args->fh, &hdr);
2085 encode_access(xdr, args->access, &hdr);
2086 encode_getfattr(xdr, args->bitmask, &hdr);
2087 encode_nops(&hdr);
2088 }
2089
2090 /*
2091 * Encode LOOKUP request
2092 */
2093 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2094 const struct nfs4_lookup_arg *args)
2095 {
2096 struct compound_hdr hdr = {
2097 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2098 };
2099
2100 encode_compound_hdr(xdr, req, &hdr);
2101 encode_sequence(xdr, &args->seq_args, &hdr);
2102 encode_putfh(xdr, args->dir_fh, &hdr);
2103 encode_lookup(xdr, args->name, &hdr);
2104 encode_getfh(xdr, &hdr);
2105 encode_getfattr(xdr, args->bitmask, &hdr);
2106 encode_nops(&hdr);
2107 }
2108
2109 /*
2110 * Encode LOOKUP_ROOT request
2111 */
2112 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2113 struct xdr_stream *xdr,
2114 const struct nfs4_lookup_root_arg *args)
2115 {
2116 struct compound_hdr hdr = {
2117 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2118 };
2119
2120 encode_compound_hdr(xdr, req, &hdr);
2121 encode_sequence(xdr, &args->seq_args, &hdr);
2122 encode_putrootfh(xdr, &hdr);
2123 encode_getfh(xdr, &hdr);
2124 encode_getfattr(xdr, args->bitmask, &hdr);
2125 encode_nops(&hdr);
2126 }
2127
2128 /*
2129 * Encode REMOVE request
2130 */
2131 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2132 const struct nfs_removeargs *args)
2133 {
2134 struct compound_hdr hdr = {
2135 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2136 };
2137
2138 encode_compound_hdr(xdr, req, &hdr);
2139 encode_sequence(xdr, &args->seq_args, &hdr);
2140 encode_putfh(xdr, args->fh, &hdr);
2141 encode_remove(xdr, &args->name, &hdr);
2142 encode_nops(&hdr);
2143 }
2144
2145 /*
2146 * Encode RENAME request
2147 */
2148 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2149 const struct nfs_renameargs *args)
2150 {
2151 struct compound_hdr hdr = {
2152 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2153 };
2154
2155 encode_compound_hdr(xdr, req, &hdr);
2156 encode_sequence(xdr, &args->seq_args, &hdr);
2157 encode_putfh(xdr, args->old_dir, &hdr);
2158 encode_savefh(xdr, &hdr);
2159 encode_putfh(xdr, args->new_dir, &hdr);
2160 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2161 encode_nops(&hdr);
2162 }
2163
2164 /*
2165 * Encode LINK request
2166 */
2167 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2168 const struct nfs4_link_arg *args)
2169 {
2170 struct compound_hdr hdr = {
2171 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2172 };
2173
2174 encode_compound_hdr(xdr, req, &hdr);
2175 encode_sequence(xdr, &args->seq_args, &hdr);
2176 encode_putfh(xdr, args->fh, &hdr);
2177 encode_savefh(xdr, &hdr);
2178 encode_putfh(xdr, args->dir_fh, &hdr);
2179 encode_link(xdr, args->name, &hdr);
2180 encode_restorefh(xdr, &hdr);
2181 encode_getfattr(xdr, args->bitmask, &hdr);
2182 encode_nops(&hdr);
2183 }
2184
2185 /*
2186 * Encode CREATE request
2187 */
2188 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2189 const struct nfs4_create_arg *args)
2190 {
2191 struct compound_hdr hdr = {
2192 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2193 };
2194
2195 encode_compound_hdr(xdr, req, &hdr);
2196 encode_sequence(xdr, &args->seq_args, &hdr);
2197 encode_putfh(xdr, args->dir_fh, &hdr);
2198 encode_create(xdr, args, &hdr);
2199 encode_getfh(xdr, &hdr);
2200 encode_getfattr(xdr, args->bitmask, &hdr);
2201 encode_nops(&hdr);
2202 }
2203
2204 /*
2205 * Encode SYMLINK request
2206 */
2207 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2208 const struct nfs4_create_arg *args)
2209 {
2210 nfs4_xdr_enc_create(req, xdr, args);
2211 }
2212
2213 /*
2214 * Encode GETATTR request
2215 */
2216 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2217 const struct nfs4_getattr_arg *args)
2218 {
2219 struct compound_hdr hdr = {
2220 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2221 };
2222
2223 encode_compound_hdr(xdr, req, &hdr);
2224 encode_sequence(xdr, &args->seq_args, &hdr);
2225 encode_putfh(xdr, args->fh, &hdr);
2226 encode_getfattr(xdr, args->bitmask, &hdr);
2227 encode_nops(&hdr);
2228 }
2229
2230 /*
2231 * Encode a CLOSE request
2232 */
2233 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2234 struct nfs_closeargs *args)
2235 {
2236 struct compound_hdr hdr = {
2237 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2238 };
2239
2240 encode_compound_hdr(xdr, req, &hdr);
2241 encode_sequence(xdr, &args->seq_args, &hdr);
2242 encode_putfh(xdr, args->fh, &hdr);
2243 encode_close(xdr, args, &hdr);
2244 encode_getfattr(xdr, args->bitmask, &hdr);
2245 encode_nops(&hdr);
2246 }
2247
2248 /*
2249 * Encode an OPEN request
2250 */
2251 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2252 struct nfs_openargs *args)
2253 {
2254 struct compound_hdr hdr = {
2255 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2256 };
2257
2258 encode_compound_hdr(xdr, req, &hdr);
2259 encode_sequence(xdr, &args->seq_args, &hdr);
2260 encode_putfh(xdr, args->fh, &hdr);
2261 encode_open(xdr, args, &hdr);
2262 encode_getfh(xdr, &hdr);
2263 if (args->access)
2264 encode_access(xdr, args->access, &hdr);
2265 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2266 encode_nops(&hdr);
2267 }
2268
2269 /*
2270 * Encode an OPEN_CONFIRM request
2271 */
2272 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2273 struct xdr_stream *xdr,
2274 struct nfs_open_confirmargs *args)
2275 {
2276 struct compound_hdr hdr = {
2277 .nops = 0,
2278 };
2279
2280 encode_compound_hdr(xdr, req, &hdr);
2281 encode_putfh(xdr, args->fh, &hdr);
2282 encode_open_confirm(xdr, args, &hdr);
2283 encode_nops(&hdr);
2284 }
2285
2286 /*
2287 * Encode an OPEN request with no attributes.
2288 */
2289 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2290 struct xdr_stream *xdr,
2291 struct nfs_openargs *args)
2292 {
2293 struct compound_hdr hdr = {
2294 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2295 };
2296
2297 encode_compound_hdr(xdr, req, &hdr);
2298 encode_sequence(xdr, &args->seq_args, &hdr);
2299 encode_putfh(xdr, args->fh, &hdr);
2300 encode_open(xdr, args, &hdr);
2301 if (args->access)
2302 encode_access(xdr, args->access, &hdr);
2303 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2304 encode_nops(&hdr);
2305 }
2306
2307 /*
2308 * Encode an OPEN_DOWNGRADE request
2309 */
2310 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2311 struct xdr_stream *xdr,
2312 struct nfs_closeargs *args)
2313 {
2314 struct compound_hdr hdr = {
2315 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2316 };
2317
2318 encode_compound_hdr(xdr, req, &hdr);
2319 encode_sequence(xdr, &args->seq_args, &hdr);
2320 encode_putfh(xdr, args->fh, &hdr);
2321 encode_open_downgrade(xdr, args, &hdr);
2322 encode_getfattr(xdr, args->bitmask, &hdr);
2323 encode_nops(&hdr);
2324 }
2325
2326 /*
2327 * Encode a LOCK request
2328 */
2329 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2330 struct nfs_lock_args *args)
2331 {
2332 struct compound_hdr hdr = {
2333 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2334 };
2335
2336 encode_compound_hdr(xdr, req, &hdr);
2337 encode_sequence(xdr, &args->seq_args, &hdr);
2338 encode_putfh(xdr, args->fh, &hdr);
2339 encode_lock(xdr, args, &hdr);
2340 encode_nops(&hdr);
2341 }
2342
2343 /*
2344 * Encode a LOCKT request
2345 */
2346 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2347 struct nfs_lockt_args *args)
2348 {
2349 struct compound_hdr hdr = {
2350 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2351 };
2352
2353 encode_compound_hdr(xdr, req, &hdr);
2354 encode_sequence(xdr, &args->seq_args, &hdr);
2355 encode_putfh(xdr, args->fh, &hdr);
2356 encode_lockt(xdr, args, &hdr);
2357 encode_nops(&hdr);
2358 }
2359
2360 /*
2361 * Encode a LOCKU request
2362 */
2363 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2364 struct nfs_locku_args *args)
2365 {
2366 struct compound_hdr hdr = {
2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2368 };
2369
2370 encode_compound_hdr(xdr, req, &hdr);
2371 encode_sequence(xdr, &args->seq_args, &hdr);
2372 encode_putfh(xdr, args->fh, &hdr);
2373 encode_locku(xdr, args, &hdr);
2374 encode_nops(&hdr);
2375 }
2376
2377 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2378 struct xdr_stream *xdr,
2379 struct nfs_release_lockowner_args *args)
2380 {
2381 struct compound_hdr hdr = {
2382 .minorversion = 0,
2383 };
2384
2385 encode_compound_hdr(xdr, req, &hdr);
2386 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2387 encode_nops(&hdr);
2388 }
2389
2390 /*
2391 * Encode a READLINK request
2392 */
2393 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2394 const struct nfs4_readlink *args)
2395 {
2396 struct compound_hdr hdr = {
2397 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2398 };
2399
2400 encode_compound_hdr(xdr, req, &hdr);
2401 encode_sequence(xdr, &args->seq_args, &hdr);
2402 encode_putfh(xdr, args->fh, &hdr);
2403 encode_readlink(xdr, args, req, &hdr);
2404
2405 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2406 args->pgbase, args->pglen);
2407 encode_nops(&hdr);
2408 }
2409
2410 /*
2411 * Encode a READDIR request
2412 */
2413 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2414 const struct nfs4_readdir_arg *args)
2415 {
2416 struct compound_hdr hdr = {
2417 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2418 };
2419
2420 encode_compound_hdr(xdr, req, &hdr);
2421 encode_sequence(xdr, &args->seq_args, &hdr);
2422 encode_putfh(xdr, args->fh, &hdr);
2423 encode_readdir(xdr, args, req, &hdr);
2424
2425 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2426 args->pgbase, args->count);
2427 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2428 __func__, hdr.replen << 2, args->pages,
2429 args->pgbase, args->count);
2430 encode_nops(&hdr);
2431 }
2432
2433 /*
2434 * Encode a READ request
2435 */
2436 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2437 struct nfs_readargs *args)
2438 {
2439 struct compound_hdr hdr = {
2440 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2441 };
2442
2443 encode_compound_hdr(xdr, req, &hdr);
2444 encode_sequence(xdr, &args->seq_args, &hdr);
2445 encode_putfh(xdr, args->fh, &hdr);
2446 encode_read(xdr, args, &hdr);
2447
2448 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2449 args->pages, args->pgbase, args->count);
2450 req->rq_rcv_buf.flags |= XDRBUF_READ;
2451 encode_nops(&hdr);
2452 }
2453
2454 /*
2455 * Encode an SETATTR request
2456 */
2457 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2458 struct nfs_setattrargs *args)
2459 {
2460 struct compound_hdr hdr = {
2461 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2462 };
2463
2464 encode_compound_hdr(xdr, req, &hdr);
2465 encode_sequence(xdr, &args->seq_args, &hdr);
2466 encode_putfh(xdr, args->fh, &hdr);
2467 encode_setattr(xdr, args, args->server, &hdr);
2468 encode_getfattr(xdr, args->bitmask, &hdr);
2469 encode_nops(&hdr);
2470 }
2471
2472 /*
2473 * Encode a GETACL request
2474 */
2475 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2476 struct nfs_getaclargs *args)
2477 {
2478 struct compound_hdr hdr = {
2479 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2480 };
2481 uint32_t replen;
2482
2483 encode_compound_hdr(xdr, req, &hdr);
2484 encode_sequence(xdr, &args->seq_args, &hdr);
2485 encode_putfh(xdr, args->fh, &hdr);
2486 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2487 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2488
2489 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2490 args->acl_pages, args->acl_pgbase, args->acl_len);
2491
2492 encode_nops(&hdr);
2493 }
2494
2495 /*
2496 * Encode a WRITE request
2497 */
2498 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2499 struct nfs_writeargs *args)
2500 {
2501 struct compound_hdr hdr = {
2502 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2503 };
2504
2505 encode_compound_hdr(xdr, req, &hdr);
2506 encode_sequence(xdr, &args->seq_args, &hdr);
2507 encode_putfh(xdr, args->fh, &hdr);
2508 encode_write(xdr, args, &hdr);
2509 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2510 if (args->bitmask)
2511 encode_getfattr(xdr, args->bitmask, &hdr);
2512 encode_nops(&hdr);
2513 }
2514
2515 /*
2516 * a COMMIT request
2517 */
2518 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2519 struct nfs_commitargs *args)
2520 {
2521 struct compound_hdr hdr = {
2522 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2523 };
2524
2525 encode_compound_hdr(xdr, req, &hdr);
2526 encode_sequence(xdr, &args->seq_args, &hdr);
2527 encode_putfh(xdr, args->fh, &hdr);
2528 encode_commit(xdr, args, &hdr);
2529 encode_nops(&hdr);
2530 }
2531
2532 /*
2533 * FSINFO request
2534 */
2535 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2536 struct nfs4_fsinfo_arg *args)
2537 {
2538 struct compound_hdr hdr = {
2539 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2540 };
2541
2542 encode_compound_hdr(xdr, req, &hdr);
2543 encode_sequence(xdr, &args->seq_args, &hdr);
2544 encode_putfh(xdr, args->fh, &hdr);
2545 encode_fsinfo(xdr, args->bitmask, &hdr);
2546 encode_nops(&hdr);
2547 }
2548
2549 /*
2550 * a PATHCONF request
2551 */
2552 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2553 const struct nfs4_pathconf_arg *args)
2554 {
2555 struct compound_hdr hdr = {
2556 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2557 };
2558
2559 encode_compound_hdr(xdr, req, &hdr);
2560 encode_sequence(xdr, &args->seq_args, &hdr);
2561 encode_putfh(xdr, args->fh, &hdr);
2562 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2563 &hdr);
2564 encode_nops(&hdr);
2565 }
2566
2567 /*
2568 * a STATFS request
2569 */
2570 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2571 const struct nfs4_statfs_arg *args)
2572 {
2573 struct compound_hdr hdr = {
2574 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2575 };
2576
2577 encode_compound_hdr(xdr, req, &hdr);
2578 encode_sequence(xdr, &args->seq_args, &hdr);
2579 encode_putfh(xdr, args->fh, &hdr);
2580 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2581 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2582 encode_nops(&hdr);
2583 }
2584
2585 /*
2586 * GETATTR_BITMAP request
2587 */
2588 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2589 struct xdr_stream *xdr,
2590 struct nfs4_server_caps_arg *args)
2591 {
2592 struct compound_hdr hdr = {
2593 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2594 };
2595
2596 encode_compound_hdr(xdr, req, &hdr);
2597 encode_sequence(xdr, &args->seq_args, &hdr);
2598 encode_putfh(xdr, args->fhandle, &hdr);
2599 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2600 FATTR4_WORD0_FH_EXPIRE_TYPE|
2601 FATTR4_WORD0_LINK_SUPPORT|
2602 FATTR4_WORD0_SYMLINK_SUPPORT|
2603 FATTR4_WORD0_ACLSUPPORT, &hdr);
2604 encode_nops(&hdr);
2605 }
2606
2607 /*
2608 * a RENEW request
2609 */
2610 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2611 struct nfs_client *clp)
2612 {
2613 struct compound_hdr hdr = {
2614 .nops = 0,
2615 };
2616
2617 encode_compound_hdr(xdr, req, &hdr);
2618 encode_renew(xdr, clp->cl_clientid, &hdr);
2619 encode_nops(&hdr);
2620 }
2621
2622 /*
2623 * a SETCLIENTID request
2624 */
2625 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2626 struct xdr_stream *xdr,
2627 struct nfs4_setclientid *sc)
2628 {
2629 struct compound_hdr hdr = {
2630 .nops = 0,
2631 };
2632
2633 encode_compound_hdr(xdr, req, &hdr);
2634 encode_setclientid(xdr, sc, &hdr);
2635 encode_nops(&hdr);
2636 }
2637
2638 /*
2639 * a SETCLIENTID_CONFIRM request
2640 */
2641 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2642 struct xdr_stream *xdr,
2643 struct nfs4_setclientid_res *arg)
2644 {
2645 struct compound_hdr hdr = {
2646 .nops = 0,
2647 };
2648
2649 encode_compound_hdr(xdr, req, &hdr);
2650 encode_setclientid_confirm(xdr, arg, &hdr);
2651 encode_nops(&hdr);
2652 }
2653
2654 /*
2655 * DELEGRETURN request
2656 */
2657 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2658 struct xdr_stream *xdr,
2659 const struct nfs4_delegreturnargs *args)
2660 {
2661 struct compound_hdr hdr = {
2662 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2663 };
2664
2665 encode_compound_hdr(xdr, req, &hdr);
2666 encode_sequence(xdr, &args->seq_args, &hdr);
2667 encode_putfh(xdr, args->fhandle, &hdr);
2668 encode_getfattr(xdr, args->bitmask, &hdr);
2669 encode_delegreturn(xdr, args->stateid, &hdr);
2670 encode_nops(&hdr);
2671 }
2672
2673 /*
2674 * Encode FS_LOCATIONS request
2675 */
2676 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2677 struct xdr_stream *xdr,
2678 struct nfs4_fs_locations_arg *args)
2679 {
2680 struct compound_hdr hdr = {
2681 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2682 };
2683 uint32_t replen;
2684
2685 encode_compound_hdr(xdr, req, &hdr);
2686 encode_sequence(xdr, &args->seq_args, &hdr);
2687 encode_putfh(xdr, args->dir_fh, &hdr);
2688 encode_lookup(xdr, args->name, &hdr);
2689 replen = hdr.replen; /* get the attribute into args->page */
2690 encode_fs_locations(xdr, args->bitmask, &hdr);
2691
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 #if defined(CONFIG_NFS_V4_1)
2716 /*
2717 * BIND_CONN_TO_SESSION request
2718 */
2719 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2720 struct xdr_stream *xdr,
2721 struct nfs_client *clp)
2722 {
2723 struct compound_hdr hdr = {
2724 .minorversion = clp->cl_mvops->minor_version,
2725 };
2726
2727 encode_compound_hdr(xdr, req, &hdr);
2728 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2729 encode_nops(&hdr);
2730 }
2731
2732 /*
2733 * EXCHANGE_ID request
2734 */
2735 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2736 struct xdr_stream *xdr,
2737 struct nfs41_exchange_id_args *args)
2738 {
2739 struct compound_hdr hdr = {
2740 .minorversion = args->client->cl_mvops->minor_version,
2741 };
2742
2743 encode_compound_hdr(xdr, req, &hdr);
2744 encode_exchange_id(xdr, args, &hdr);
2745 encode_nops(&hdr);
2746 }
2747
2748 /*
2749 * a CREATE_SESSION request
2750 */
2751 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2752 struct xdr_stream *xdr,
2753 struct nfs41_create_session_args *args)
2754 {
2755 struct compound_hdr hdr = {
2756 .minorversion = args->client->cl_mvops->minor_version,
2757 };
2758
2759 encode_compound_hdr(xdr, req, &hdr);
2760 encode_create_session(xdr, args, &hdr);
2761 encode_nops(&hdr);
2762 }
2763
2764 /*
2765 * a DESTROY_SESSION request
2766 */
2767 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2768 struct xdr_stream *xdr,
2769 struct nfs4_session *session)
2770 {
2771 struct compound_hdr hdr = {
2772 .minorversion = session->clp->cl_mvops->minor_version,
2773 };
2774
2775 encode_compound_hdr(xdr, req, &hdr);
2776 encode_destroy_session(xdr, session, &hdr);
2777 encode_nops(&hdr);
2778 }
2779
2780 /*
2781 * a DESTROY_CLIENTID request
2782 */
2783 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2784 struct xdr_stream *xdr,
2785 struct nfs_client *clp)
2786 {
2787 struct compound_hdr hdr = {
2788 .minorversion = clp->cl_mvops->minor_version,
2789 };
2790
2791 encode_compound_hdr(xdr, req, &hdr);
2792 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2793 encode_nops(&hdr);
2794 }
2795
2796 /*
2797 * a SEQUENCE request
2798 */
2799 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2800 struct nfs4_sequence_args *args)
2801 {
2802 struct compound_hdr hdr = {
2803 .minorversion = nfs4_xdr_minorversion(args),
2804 };
2805
2806 encode_compound_hdr(xdr, req, &hdr);
2807 encode_sequence(xdr, args, &hdr);
2808 encode_nops(&hdr);
2809 }
2810
2811 /*
2812 * a GET_LEASE_TIME request
2813 */
2814 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2815 struct xdr_stream *xdr,
2816 struct nfs4_get_lease_time_args *args)
2817 {
2818 struct compound_hdr hdr = {
2819 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2820 };
2821 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2822
2823 encode_compound_hdr(xdr, req, &hdr);
2824 encode_sequence(xdr, &args->la_seq_args, &hdr);
2825 encode_putrootfh(xdr, &hdr);
2826 encode_fsinfo(xdr, lease_bitmap, &hdr);
2827 encode_nops(&hdr);
2828 }
2829
2830 /*
2831 * a RECLAIM_COMPLETE request
2832 */
2833 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2834 struct xdr_stream *xdr,
2835 struct nfs41_reclaim_complete_args *args)
2836 {
2837 struct compound_hdr hdr = {
2838 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2839 };
2840
2841 encode_compound_hdr(xdr, req, &hdr);
2842 encode_sequence(xdr, &args->seq_args, &hdr);
2843 encode_reclaim_complete(xdr, args, &hdr);
2844 encode_nops(&hdr);
2845 }
2846
2847 /*
2848 * Encode GETDEVICELIST request
2849 */
2850 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2851 struct xdr_stream *xdr,
2852 struct nfs4_getdevicelist_args *args)
2853 {
2854 struct compound_hdr hdr = {
2855 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2856 };
2857
2858 encode_compound_hdr(xdr, req, &hdr);
2859 encode_sequence(xdr, &args->seq_args, &hdr);
2860 encode_putfh(xdr, args->fh, &hdr);
2861 encode_getdevicelist(xdr, args, &hdr);
2862 encode_nops(&hdr);
2863 }
2864
2865 /*
2866 * Encode GETDEVICEINFO request
2867 */
2868 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2869 struct xdr_stream *xdr,
2870 struct nfs4_getdeviceinfo_args *args)
2871 {
2872 struct compound_hdr hdr = {
2873 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2874 };
2875
2876 encode_compound_hdr(xdr, req, &hdr);
2877 encode_sequence(xdr, &args->seq_args, &hdr);
2878 encode_getdeviceinfo(xdr, args, &hdr);
2879
2880 /* set up reply kvec. Subtract notification bitmap max size (2)
2881 * so that notification bitmap is put in xdr_buf tail */
2882 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2883 args->pdev->pages, args->pdev->pgbase,
2884 args->pdev->pglen);
2885
2886 encode_nops(&hdr);
2887 }
2888
2889 /*
2890 * Encode LAYOUTGET request
2891 */
2892 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2893 struct xdr_stream *xdr,
2894 struct nfs4_layoutget_args *args)
2895 {
2896 struct compound_hdr hdr = {
2897 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2898 };
2899
2900 encode_compound_hdr(xdr, req, &hdr);
2901 encode_sequence(xdr, &args->seq_args, &hdr);
2902 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2903 encode_layoutget(xdr, args, &hdr);
2904
2905 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2906 args->layout.pages, 0, args->layout.pglen);
2907
2908 encode_nops(&hdr);
2909 }
2910
2911 /*
2912 * Encode LAYOUTCOMMIT request
2913 */
2914 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2915 struct xdr_stream *xdr,
2916 struct nfs4_layoutcommit_args *args)
2917 {
2918 struct nfs4_layoutcommit_data *data =
2919 container_of(args, struct nfs4_layoutcommit_data, args);
2920 struct compound_hdr hdr = {
2921 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2922 };
2923
2924 encode_compound_hdr(xdr, req, &hdr);
2925 encode_sequence(xdr, &args->seq_args, &hdr);
2926 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2927 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2928 encode_getfattr(xdr, args->bitmask, &hdr);
2929 encode_nops(&hdr);
2930 }
2931
2932 /*
2933 * Encode LAYOUTRETURN request
2934 */
2935 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2936 struct xdr_stream *xdr,
2937 struct nfs4_layoutreturn_args *args)
2938 {
2939 struct compound_hdr hdr = {
2940 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2941 };
2942
2943 encode_compound_hdr(xdr, req, &hdr);
2944 encode_sequence(xdr, &args->seq_args, &hdr);
2945 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2946 encode_layoutreturn(xdr, args, &hdr);
2947 encode_nops(&hdr);
2948 }
2949
2950 /*
2951 * Encode SECINFO_NO_NAME request
2952 */
2953 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2954 struct xdr_stream *xdr,
2955 struct nfs41_secinfo_no_name_args *args)
2956 {
2957 struct compound_hdr hdr = {
2958 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2959 };
2960
2961 encode_compound_hdr(xdr, req, &hdr);
2962 encode_sequence(xdr, &args->seq_args, &hdr);
2963 encode_putrootfh(xdr, &hdr);
2964 encode_secinfo_no_name(xdr, args, &hdr);
2965 encode_nops(&hdr);
2966 return 0;
2967 }
2968
2969 /*
2970 * Encode TEST_STATEID request
2971 */
2972 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2973 struct xdr_stream *xdr,
2974 struct nfs41_test_stateid_args *args)
2975 {
2976 struct compound_hdr hdr = {
2977 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2978 };
2979
2980 encode_compound_hdr(xdr, req, &hdr);
2981 encode_sequence(xdr, &args->seq_args, &hdr);
2982 encode_test_stateid(xdr, args, &hdr);
2983 encode_nops(&hdr);
2984 }
2985
2986 /*
2987 * Encode FREE_STATEID request
2988 */
2989 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2990 struct xdr_stream *xdr,
2991 struct nfs41_free_stateid_args *args)
2992 {
2993 struct compound_hdr hdr = {
2994 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2995 };
2996
2997 encode_compound_hdr(xdr, req, &hdr);
2998 encode_sequence(xdr, &args->seq_args, &hdr);
2999 encode_free_stateid(xdr, args, &hdr);
3000 encode_nops(&hdr);
3001 }
3002 #endif /* CONFIG_NFS_V4_1 */
3003
3004 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3005 {
3006 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3007 "Remaining buffer length is %tu words.\n",
3008 func, xdr->end - xdr->p);
3009 }
3010
3011 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3012 {
3013 __be32 *p;
3014
3015 p = xdr_inline_decode(xdr, 4);
3016 if (unlikely(!p))
3017 goto out_overflow;
3018 *len = be32_to_cpup(p);
3019 p = xdr_inline_decode(xdr, *len);
3020 if (unlikely(!p))
3021 goto out_overflow;
3022 *string = (char *)p;
3023 return 0;
3024 out_overflow:
3025 print_overflow_msg(__func__, xdr);
3026 return -EIO;
3027 }
3028
3029 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3030 {
3031 __be32 *p;
3032
3033 p = xdr_inline_decode(xdr, 8);
3034 if (unlikely(!p))
3035 goto out_overflow;
3036 hdr->status = be32_to_cpup(p++);
3037 hdr->taglen = be32_to_cpup(p);
3038
3039 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3040 if (unlikely(!p))
3041 goto out_overflow;
3042 hdr->tag = (char *)p;
3043 p += XDR_QUADLEN(hdr->taglen);
3044 hdr->nops = be32_to_cpup(p);
3045 if (unlikely(hdr->nops < 1))
3046 return nfs4_stat_to_errno(hdr->status);
3047 return 0;
3048 out_overflow:
3049 print_overflow_msg(__func__, xdr);
3050 return -EIO;
3051 }
3052
3053 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3054 {
3055 __be32 *p;
3056 uint32_t opnum;
3057 int32_t nfserr;
3058
3059 p = xdr_inline_decode(xdr, 8);
3060 if (unlikely(!p))
3061 goto out_overflow;
3062 opnum = be32_to_cpup(p++);
3063 if (opnum != expected) {
3064 dprintk("nfs: Server returned operation"
3065 " %d but we issued a request for %d\n",
3066 opnum, expected);
3067 return -EIO;
3068 }
3069 nfserr = be32_to_cpup(p);
3070 if (nfserr != NFS_OK)
3071 return nfs4_stat_to_errno(nfserr);
3072 return 0;
3073 out_overflow:
3074 print_overflow_msg(__func__, xdr);
3075 return -EIO;
3076 }
3077
3078 /* Dummy routine */
3079 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3080 {
3081 __be32 *p;
3082 unsigned int strlen;
3083 char *str;
3084
3085 p = xdr_inline_decode(xdr, 12);
3086 if (likely(p))
3087 return decode_opaque_inline(xdr, &strlen, &str);
3088 print_overflow_msg(__func__, xdr);
3089 return -EIO;
3090 }
3091
3092 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3093 {
3094 uint32_t bmlen;
3095 __be32 *p;
3096
3097 p = xdr_inline_decode(xdr, 4);
3098 if (unlikely(!p))
3099 goto out_overflow;
3100 bmlen = be32_to_cpup(p);
3101
3102 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3103 p = xdr_inline_decode(xdr, (bmlen << 2));
3104 if (unlikely(!p))
3105 goto out_overflow;
3106 if (bmlen > 0) {
3107 bitmap[0] = be32_to_cpup(p++);
3108 if (bmlen > 1) {
3109 bitmap[1] = be32_to_cpup(p++);
3110 if (bmlen > 2)
3111 bitmap[2] = be32_to_cpup(p);
3112 }
3113 }
3114 return 0;
3115 out_overflow:
3116 print_overflow_msg(__func__, xdr);
3117 return -EIO;
3118 }
3119
3120 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3121 {
3122 __be32 *p;
3123
3124 p = xdr_inline_decode(xdr, 4);
3125 if (unlikely(!p))
3126 goto out_overflow;
3127 *attrlen = be32_to_cpup(p);
3128 *savep = xdr_stream_pos(xdr);
3129 return 0;
3130 out_overflow:
3131 print_overflow_msg(__func__, xdr);
3132 return -EIO;
3133 }
3134
3135 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3136 {
3137 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3138 int ret;
3139 ret = decode_attr_bitmap(xdr, bitmask);
3140 if (unlikely(ret < 0))
3141 return ret;
3142 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3143 } else
3144 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3145 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3146 bitmask[0], bitmask[1], bitmask[2]);
3147 return 0;
3148 }
3149
3150 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3151 {
3152 __be32 *p;
3153 int ret = 0;
3154
3155 *type = 0;
3156 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3157 return -EIO;
3158 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3159 p = xdr_inline_decode(xdr, 4);
3160 if (unlikely(!p))
3161 goto out_overflow;
3162 *type = be32_to_cpup(p);
3163 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3164 dprintk("%s: bad type %d\n", __func__, *type);
3165 return -EIO;
3166 }
3167 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3168 ret = NFS_ATTR_FATTR_TYPE;
3169 }
3170 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3171 return ret;
3172 out_overflow:
3173 print_overflow_msg(__func__, xdr);
3174 return -EIO;
3175 }
3176
3177 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3178 uint32_t *bitmap, uint32_t *type)
3179 {
3180 __be32 *p;
3181
3182 *type = 0;
3183 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3184 return -EIO;
3185 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3186 p = xdr_inline_decode(xdr, 4);
3187 if (unlikely(!p))
3188 goto out_overflow;
3189 *type = be32_to_cpup(p);
3190 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3191 }
3192 dprintk("%s: expire type=0x%x\n", __func__, *type);
3193 return 0;
3194 out_overflow:
3195 print_overflow_msg(__func__, xdr);
3196 return -EIO;
3197 }
3198
3199 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3200 {
3201 __be32 *p;
3202 int ret = 0;
3203
3204 *change = 0;
3205 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3206 return -EIO;
3207 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3208 p = xdr_inline_decode(xdr, 8);
3209 if (unlikely(!p))
3210 goto out_overflow;
3211 xdr_decode_hyper(p, change);
3212 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3213 ret = NFS_ATTR_FATTR_CHANGE;
3214 }
3215 dprintk("%s: change attribute=%Lu\n", __func__,
3216 (unsigned long long)*change);
3217 return ret;
3218 out_overflow:
3219 print_overflow_msg(__func__, xdr);
3220 return -EIO;
3221 }
3222
3223 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3224 {
3225 __be32 *p;
3226 int ret = 0;
3227
3228 *size = 0;
3229 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3230 return -EIO;
3231 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3232 p = xdr_inline_decode(xdr, 8);
3233 if (unlikely(!p))
3234 goto out_overflow;
3235 xdr_decode_hyper(p, size);
3236 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3237 ret = NFS_ATTR_FATTR_SIZE;
3238 }
3239 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3240 return ret;
3241 out_overflow:
3242 print_overflow_msg(__func__, xdr);
3243 return -EIO;
3244 }
3245
3246 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3247 {
3248 __be32 *p;
3249
3250 *res = 0;
3251 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3252 return -EIO;
3253 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3254 p = xdr_inline_decode(xdr, 4);
3255 if (unlikely(!p))
3256 goto out_overflow;
3257 *res = be32_to_cpup(p);
3258 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3259 }
3260 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3261 return 0;
3262 out_overflow:
3263 print_overflow_msg(__func__, xdr);
3264 return -EIO;
3265 }
3266
3267 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3268 {
3269 __be32 *p;
3270
3271 *res = 0;
3272 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3273 return -EIO;
3274 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3275 p = xdr_inline_decode(xdr, 4);
3276 if (unlikely(!p))
3277 goto out_overflow;
3278 *res = be32_to_cpup(p);
3279 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3280 }
3281 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3282 return 0;
3283 out_overflow:
3284 print_overflow_msg(__func__, xdr);
3285 return -EIO;
3286 }
3287
3288 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3289 {
3290 __be32 *p;
3291 int ret = 0;
3292
3293 fsid->major = 0;
3294 fsid->minor = 0;
3295 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3296 return -EIO;
3297 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3298 p = xdr_inline_decode(xdr, 16);
3299 if (unlikely(!p))
3300 goto out_overflow;
3301 p = xdr_decode_hyper(p, &fsid->major);
3302 xdr_decode_hyper(p, &fsid->minor);
3303 bitmap[0] &= ~FATTR4_WORD0_FSID;
3304 ret = NFS_ATTR_FATTR_FSID;
3305 }
3306 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3307 (unsigned long long)fsid->major,
3308 (unsigned long long)fsid->minor);
3309 return ret;
3310 out_overflow:
3311 print_overflow_msg(__func__, xdr);
3312 return -EIO;
3313 }
3314
3315 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3316 {
3317 __be32 *p;
3318
3319 *res = 60;
3320 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3321 return -EIO;
3322 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3323 p = xdr_inline_decode(xdr, 4);
3324 if (unlikely(!p))
3325 goto out_overflow;
3326 *res = be32_to_cpup(p);
3327 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3328 }
3329 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3330 return 0;
3331 out_overflow:
3332 print_overflow_msg(__func__, xdr);
3333 return -EIO;
3334 }
3335
3336 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3337 {
3338 __be32 *p;
3339
3340 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3341 return -EIO;
3342 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3343 p = xdr_inline_decode(xdr, 4);
3344 if (unlikely(!p))
3345 goto out_overflow;
3346 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3347 *res = -be32_to_cpup(p);
3348 }
3349 return 0;
3350 out_overflow:
3351 print_overflow_msg(__func__, xdr);
3352 return -EIO;
3353 }
3354
3355 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3356 {
3357 __be32 *p;
3358 int len;
3359
3360 if (fh != NULL)
3361 memset(fh, 0, sizeof(*fh));
3362
3363 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3364 return -EIO;
3365 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3366 p = xdr_inline_decode(xdr, 4);
3367 if (unlikely(!p))
3368 goto out_overflow;
3369 len = be32_to_cpup(p);
3370 if (len > NFS4_FHSIZE)
3371 return -EIO;
3372 p = xdr_inline_decode(xdr, len);
3373 if (unlikely(!p))
3374 goto out_overflow;
3375 if (fh != NULL) {
3376 memcpy(fh->data, p, len);
3377 fh->size = len;
3378 }
3379 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3380 }
3381 return 0;
3382 out_overflow:
3383 print_overflow_msg(__func__, xdr);
3384 return -EIO;
3385 }
3386
3387 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3388 {
3389 __be32 *p;
3390
3391 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3392 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3393 return -EIO;
3394 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3395 p = xdr_inline_decode(xdr, 4);
3396 if (unlikely(!p))
3397 goto out_overflow;
3398 *res = be32_to_cpup(p);
3399 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3400 }
3401 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3402 return 0;
3403 out_overflow:
3404 print_overflow_msg(__func__, xdr);
3405 return -EIO;
3406 }
3407
3408 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3409 {
3410 __be32 *p;
3411 int ret = 0;
3412
3413 *fileid = 0;
3414 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3415 return -EIO;
3416 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3417 p = xdr_inline_decode(xdr, 8);
3418 if (unlikely(!p))
3419 goto out_overflow;
3420 xdr_decode_hyper(p, fileid);
3421 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3422 ret = NFS_ATTR_FATTR_FILEID;
3423 }
3424 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3425 return ret;
3426 out_overflow:
3427 print_overflow_msg(__func__, xdr);
3428 return -EIO;
3429 }
3430
3431 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3432 {
3433 __be32 *p;
3434 int ret = 0;
3435
3436 *fileid = 0;
3437 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3438 return -EIO;
3439 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3440 p = xdr_inline_decode(xdr, 8);
3441 if (unlikely(!p))
3442 goto out_overflow;
3443 xdr_decode_hyper(p, fileid);
3444 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3445 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3446 }
3447 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3448 return ret;
3449 out_overflow:
3450 print_overflow_msg(__func__, xdr);
3451 return -EIO;
3452 }
3453
3454 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3455 {
3456 __be32 *p;
3457 int status = 0;
3458
3459 *res = 0;
3460 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3461 return -EIO;
3462 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3463 p = xdr_inline_decode(xdr, 8);
3464 if (unlikely(!p))
3465 goto out_overflow;
3466 xdr_decode_hyper(p, res);
3467 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3468 }
3469 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3470 return status;
3471 out_overflow:
3472 print_overflow_msg(__func__, xdr);
3473 return -EIO;
3474 }
3475
3476 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3477 {
3478 __be32 *p;
3479 int status = 0;
3480
3481 *res = 0;
3482 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3483 return -EIO;
3484 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3485 p = xdr_inline_decode(xdr, 8);
3486 if (unlikely(!p))
3487 goto out_overflow;
3488 xdr_decode_hyper(p, res);
3489 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3490 }
3491 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3492 return status;
3493 out_overflow:
3494 print_overflow_msg(__func__, xdr);
3495 return -EIO;
3496 }
3497
3498 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3499 {
3500 __be32 *p;
3501 int status = 0;
3502
3503 *res = 0;
3504 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3505 return -EIO;
3506 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3507 p = xdr_inline_decode(xdr, 8);
3508 if (unlikely(!p))
3509 goto out_overflow;
3510 xdr_decode_hyper(p, res);
3511 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3512 }
3513 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3514 return status;
3515 out_overflow:
3516 print_overflow_msg(__func__, xdr);
3517 return -EIO;
3518 }
3519
3520 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3521 {
3522 u32 n;
3523 __be32 *p;
3524 int status = 0;
3525
3526 p = xdr_inline_decode(xdr, 4);
3527 if (unlikely(!p))
3528 goto out_overflow;
3529 n = be32_to_cpup(p);
3530 if (n == 0)
3531 goto root_path;
3532 dprintk("pathname4: ");
3533 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3534 dprintk("cannot parse %d components in path\n", n);
3535 goto out_eio;
3536 }
3537 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3538 struct nfs4_string *component = &path->components[path->ncomponents];
3539 status = decode_opaque_inline(xdr, &component->len, &component->data);
3540 if (unlikely(status != 0))
3541 goto out_eio;
3542 ifdebug (XDR)
3543 pr_cont("%s%.*s ",
3544 (path->ncomponents != n ? "/ " : ""),
3545 component->len, component->data);
3546 }
3547 out:
3548 return status;
3549 root_path:
3550 /* a root pathname is sent as a zero component4 */
3551 path->ncomponents = 1;
3552 path->components[0].len=0;
3553 path->components[0].data=NULL;
3554 dprintk("pathname4: /\n");
3555 goto out;
3556 out_eio:
3557 dprintk(" status %d", status);
3558 status = -EIO;
3559 goto out;
3560 out_overflow:
3561 print_overflow_msg(__func__, xdr);
3562 return -EIO;
3563 }
3564
3565 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3566 {
3567 int n;
3568 __be32 *p;
3569 int status = -EIO;
3570
3571 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3572 goto out;
3573 status = 0;
3574 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3575 goto out;
3576 status = -EIO;
3577 /* Ignore borken servers that return unrequested attrs */
3578 if (unlikely(res == NULL))
3579 goto out;
3580 dprintk("%s: fsroot:\n", __func__);
3581 status = decode_pathname(xdr, &res->fs_path);
3582 if (unlikely(status != 0))
3583 goto out;
3584 p = xdr_inline_decode(xdr, 4);
3585 if (unlikely(!p))
3586 goto out_overflow;
3587 n = be32_to_cpup(p);
3588 if (n <= 0)
3589 goto out_eio;
3590 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3591 u32 m;
3592 struct nfs4_fs_location *loc;
3593
3594 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3595 break;
3596 loc = &res->locations[res->nlocations];
3597 p = xdr_inline_decode(xdr, 4);
3598 if (unlikely(!p))
3599 goto out_overflow;
3600 m = be32_to_cpup(p);
3601
3602 dprintk("%s: servers:\n", __func__);
3603 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3604 struct nfs4_string *server;
3605
3606 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3607 unsigned int i;
3608 dprintk("%s: using first %u of %u servers "
3609 "returned for location %u\n",
3610 __func__,
3611 NFS4_FS_LOCATION_MAXSERVERS,
3612 m, res->nlocations);
3613 for (i = loc->nservers; i < m; i++) {
3614 unsigned int len;
3615 char *data;
3616 status = decode_opaque_inline(xdr, &len, &data);
3617 if (unlikely(status != 0))
3618 goto out_eio;
3619 }
3620 break;
3621 }
3622 server = &loc->servers[loc->nservers];
3623 status = decode_opaque_inline(xdr, &server->len, &server->data);
3624 if (unlikely(status != 0))
3625 goto out_eio;
3626 dprintk("%s ", server->data);
3627 }
3628 status = decode_pathname(xdr, &loc->rootpath);
3629 if (unlikely(status != 0))
3630 goto out_eio;
3631 }
3632 if (res->nlocations != 0)
3633 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3634 out:
3635 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3636 return status;
3637 out_overflow:
3638 print_overflow_msg(__func__, xdr);
3639 out_eio:
3640 status = -EIO;
3641 goto out;
3642 }
3643
3644 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3645 {
3646 __be32 *p;
3647 int status = 0;
3648
3649 *res = 0;
3650 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3651 return -EIO;
3652 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3653 p = xdr_inline_decode(xdr, 8);
3654 if (unlikely(!p))
3655 goto out_overflow;
3656 xdr_decode_hyper(p, res);
3657 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3658 }
3659 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3660 return status;
3661 out_overflow:
3662 print_overflow_msg(__func__, xdr);
3663 return -EIO;
3664 }
3665
3666 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3667 {
3668 __be32 *p;
3669 int status = 0;
3670
3671 *maxlink = 1;
3672 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3673 return -EIO;
3674 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3675 p = xdr_inline_decode(xdr, 4);
3676 if (unlikely(!p))
3677 goto out_overflow;
3678 *maxlink = be32_to_cpup(p);
3679 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3680 }
3681 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3682 return status;
3683 out_overflow:
3684 print_overflow_msg(__func__, xdr);
3685 return -EIO;
3686 }
3687
3688 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3689 {
3690 __be32 *p;
3691 int status = 0;
3692
3693 *maxname = 1024;
3694 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3695 return -EIO;
3696 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3697 p = xdr_inline_decode(xdr, 4);
3698 if (unlikely(!p))
3699 goto out_overflow;
3700 *maxname = be32_to_cpup(p);
3701 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3702 }
3703 dprintk("%s: maxname=%u\n", __func__, *maxname);
3704 return status;
3705 out_overflow:
3706 print_overflow_msg(__func__, xdr);
3707 return -EIO;
3708 }
3709
3710 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3711 {
3712 __be32 *p;
3713 int status = 0;
3714
3715 *res = 1024;
3716 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3717 return -EIO;
3718 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3719 uint64_t maxread;
3720 p = xdr_inline_decode(xdr, 8);
3721 if (unlikely(!p))
3722 goto out_overflow;
3723 xdr_decode_hyper(p, &maxread);
3724 if (maxread > 0x7FFFFFFF)
3725 maxread = 0x7FFFFFFF;
3726 *res = (uint32_t)maxread;
3727 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3728 }
3729 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3730 return status;
3731 out_overflow:
3732 print_overflow_msg(__func__, xdr);
3733 return -EIO;
3734 }
3735
3736 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3737 {
3738 __be32 *p;
3739 int status = 0;
3740
3741 *res = 1024;
3742 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3743 return -EIO;
3744 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3745 uint64_t maxwrite;
3746 p = xdr_inline_decode(xdr, 8);
3747 if (unlikely(!p))
3748 goto out_overflow;
3749 xdr_decode_hyper(p, &maxwrite);
3750 if (maxwrite > 0x7FFFFFFF)
3751 maxwrite = 0x7FFFFFFF;
3752 *res = (uint32_t)maxwrite;
3753 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3754 }
3755 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3756 return status;
3757 out_overflow:
3758 print_overflow_msg(__func__, xdr);
3759 return -EIO;
3760 }
3761
3762 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3763 {
3764 uint32_t tmp;
3765 __be32 *p;
3766 int ret = 0;
3767
3768 *mode = 0;
3769 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3770 return -EIO;
3771 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3772 p = xdr_inline_decode(xdr, 4);
3773 if (unlikely(!p))
3774 goto out_overflow;
3775 tmp = be32_to_cpup(p);
3776 *mode = tmp & ~S_IFMT;
3777 bitmap[1] &= ~FATTR4_WORD1_MODE;
3778 ret = NFS_ATTR_FATTR_MODE;
3779 }
3780 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3781 return ret;
3782 out_overflow:
3783 print_overflow_msg(__func__, xdr);
3784 return -EIO;
3785 }
3786
3787 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3788 {
3789 __be32 *p;
3790 int ret = 0;
3791
3792 *nlink = 1;
3793 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3794 return -EIO;
3795 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3796 p = xdr_inline_decode(xdr, 4);
3797 if (unlikely(!p))
3798 goto out_overflow;
3799 *nlink = be32_to_cpup(p);
3800 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3801 ret = NFS_ATTR_FATTR_NLINK;
3802 }
3803 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3804 return ret;
3805 out_overflow:
3806 print_overflow_msg(__func__, xdr);
3807 return -EIO;
3808 }
3809
3810 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3811 const struct nfs_server *server, kuid_t *uid,
3812 struct nfs4_string *owner_name)
3813 {
3814 uint32_t len;
3815 __be32 *p;
3816 int ret = 0;
3817
3818 *uid = make_kuid(&init_user_ns, -2);
3819 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3820 return -EIO;
3821 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3822 p = xdr_inline_decode(xdr, 4);
3823 if (unlikely(!p))
3824 goto out_overflow;
3825 len = be32_to_cpup(p);
3826 p = xdr_inline_decode(xdr, len);
3827 if (unlikely(!p))
3828 goto out_overflow;
3829 if (owner_name != NULL) {
3830 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3831 if (owner_name->data != NULL) {
3832 owner_name->len = len;
3833 ret = NFS_ATTR_FATTR_OWNER_NAME;
3834 }
3835 } else if (len < XDR_MAX_NETOBJ) {
3836 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3837 ret = NFS_ATTR_FATTR_OWNER;
3838 else
3839 dprintk("%s: nfs_map_name_to_uid failed!\n",
3840 __func__);
3841 } else
3842 dprintk("%s: name too long (%u)!\n",
3843 __func__, len);
3844 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3845 }
3846 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3847 return ret;
3848 out_overflow:
3849 print_overflow_msg(__func__, xdr);
3850 return -EIO;
3851 }
3852
3853 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3854 const struct nfs_server *server, kgid_t *gid,
3855 struct nfs4_string *group_name)
3856 {
3857 uint32_t len;
3858 __be32 *p;
3859 int ret = 0;
3860
3861 *gid = make_kgid(&init_user_ns, -2);
3862 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3863 return -EIO;
3864 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3865 p = xdr_inline_decode(xdr, 4);
3866 if (unlikely(!p))
3867 goto out_overflow;
3868 len = be32_to_cpup(p);
3869 p = xdr_inline_decode(xdr, len);
3870 if (unlikely(!p))
3871 goto out_overflow;
3872 if (group_name != NULL) {
3873 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3874 if (group_name->data != NULL) {
3875 group_name->len = len;
3876 ret = NFS_ATTR_FATTR_GROUP_NAME;
3877 }
3878 } else if (len < XDR_MAX_NETOBJ) {
3879 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3880 ret = NFS_ATTR_FATTR_GROUP;
3881 else
3882 dprintk("%s: nfs_map_group_to_gid failed!\n",
3883 __func__);
3884 } else
3885 dprintk("%s: name too long (%u)!\n",
3886 __func__, len);
3887 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3888 }
3889 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3890 return ret;
3891 out_overflow:
3892 print_overflow_msg(__func__, xdr);
3893 return -EIO;
3894 }
3895
3896 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3897 {
3898 uint32_t major = 0, minor = 0;
3899 __be32 *p;
3900 int ret = 0;
3901
3902 *rdev = MKDEV(0,0);
3903 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3904 return -EIO;
3905 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3906 dev_t tmp;
3907
3908 p = xdr_inline_decode(xdr, 8);
3909 if (unlikely(!p))
3910 goto out_overflow;
3911 major = be32_to_cpup(p++);
3912 minor = be32_to_cpup(p);
3913 tmp = MKDEV(major, minor);
3914 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3915 *rdev = tmp;
3916 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3917 ret = NFS_ATTR_FATTR_RDEV;
3918 }
3919 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3920 return ret;
3921 out_overflow:
3922 print_overflow_msg(__func__, xdr);
3923 return -EIO;
3924 }
3925
3926 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3927 {
3928 __be32 *p;
3929 int status = 0;
3930
3931 *res = 0;
3932 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3933 return -EIO;
3934 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3935 p = xdr_inline_decode(xdr, 8);
3936 if (unlikely(!p))
3937 goto out_overflow;
3938 xdr_decode_hyper(p, res);
3939 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3940 }
3941 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3942 return status;
3943 out_overflow:
3944 print_overflow_msg(__func__, xdr);
3945 return -EIO;
3946 }
3947
3948 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3949 {
3950 __be32 *p;
3951 int status = 0;
3952
3953 *res = 0;
3954 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3955 return -EIO;
3956 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3957 p = xdr_inline_decode(xdr, 8);
3958 if (unlikely(!p))
3959 goto out_overflow;
3960 xdr_decode_hyper(p, res);
3961 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3962 }
3963 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3964 return status;
3965 out_overflow:
3966 print_overflow_msg(__func__, xdr);
3967 return -EIO;
3968 }
3969
3970 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3971 {
3972 __be32 *p;
3973 int status = 0;
3974
3975 *res = 0;
3976 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3977 return -EIO;
3978 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3979 p = xdr_inline_decode(xdr, 8);
3980 if (unlikely(!p))
3981 goto out_overflow;
3982 xdr_decode_hyper(p, res);
3983 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3984 }
3985 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3986 return status;
3987 out_overflow:
3988 print_overflow_msg(__func__, xdr);
3989 return -EIO;
3990 }
3991
3992 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3993 {
3994 __be32 *p;
3995 int ret = 0;
3996
3997 *used = 0;
3998 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3999 return -EIO;
4000 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4001 p = xdr_inline_decode(xdr, 8);
4002 if (unlikely(!p))
4003 goto out_overflow;
4004 xdr_decode_hyper(p, used);
4005 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4006 ret = NFS_ATTR_FATTR_SPACE_USED;
4007 }
4008 dprintk("%s: space used=%Lu\n", __func__,
4009 (unsigned long long)*used);
4010 return ret;
4011 out_overflow:
4012 print_overflow_msg(__func__, xdr);
4013 return -EIO;
4014 }
4015
4016 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4017 {
4018 __be32 *p;
4019 uint64_t sec;
4020 uint32_t nsec;
4021
4022 p = xdr_inline_decode(xdr, 12);
4023 if (unlikely(!p))
4024 goto out_overflow;
4025 p = xdr_decode_hyper(p, &sec);
4026 nsec = be32_to_cpup(p);
4027 time->tv_sec = (time_t)sec;
4028 time->tv_nsec = (long)nsec;
4029 return 0;
4030 out_overflow:
4031 print_overflow_msg(__func__, xdr);
4032 return -EIO;
4033 }
4034
4035 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4036 {
4037 int status = 0;
4038
4039 time->tv_sec = 0;
4040 time->tv_nsec = 0;
4041 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4042 return -EIO;
4043 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4044 status = decode_attr_time(xdr, time);
4045 if (status == 0)
4046 status = NFS_ATTR_FATTR_ATIME;
4047 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4048 }
4049 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4050 return status;
4051 }
4052
4053 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4054 {
4055 int status = 0;
4056
4057 time->tv_sec = 0;
4058 time->tv_nsec = 0;
4059 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4060 return -EIO;
4061 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4062 status = decode_attr_time(xdr, time);
4063 if (status == 0)
4064 status = NFS_ATTR_FATTR_CTIME;
4065 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4066 }
4067 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4068 return status;
4069 }
4070
4071 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4072 struct timespec *time)
4073 {
4074 int status = 0;
4075
4076 time->tv_sec = 0;
4077 time->tv_nsec = 0;
4078 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4079 return -EIO;
4080 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4081 status = decode_attr_time(xdr, time);
4082 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4083 }
4084 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4085 (long)time->tv_nsec);
4086 return status;
4087 }
4088
4089 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4090 struct nfs4_label *label)
4091 {
4092 uint32_t pi = 0;
4093 uint32_t lfs = 0;
4094 __u32 len;
4095 __be32 *p;
4096 int status = 0;
4097
4098 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4099 return -EIO;
4100 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4101 p = xdr_inline_decode(xdr, 4);
4102 if (unlikely(!p))
4103 goto out_overflow;
4104 lfs = be32_to_cpup(p++);
4105 p = xdr_inline_decode(xdr, 4);
4106 if (unlikely(!p))
4107 goto out_overflow;
4108 pi = be32_to_cpup(p++);
4109 p = xdr_inline_decode(xdr, 4);
4110 if (unlikely(!p))
4111 goto out_overflow;
4112 len = be32_to_cpup(p++);
4113 p = xdr_inline_decode(xdr, len);
4114 if (unlikely(!p))
4115 goto out_overflow;
4116 if (len < NFS4_MAXLABELLEN) {
4117 if (label) {
4118 memcpy(label->label, p, len);
4119 label->len = len;
4120 label->pi = pi;
4121 label->lfs = lfs;
4122 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4123 }
4124 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4125 } else
4126 printk(KERN_WARNING "%s: label too long (%u)!\n",
4127 __func__, len);
4128 }
4129 if (label && label->label)
4130 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4131 (char *)label->label, label->len, label->pi, label->lfs);
4132 return status;
4133
4134 out_overflow:
4135 print_overflow_msg(__func__, xdr);
4136 return -EIO;
4137 }
4138
4139 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4140 {
4141 int status = 0;
4142
4143 time->tv_sec = 0;
4144 time->tv_nsec = 0;
4145 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4146 return -EIO;
4147 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4148 status = decode_attr_time(xdr, time);
4149 if (status == 0)
4150 status = NFS_ATTR_FATTR_MTIME;
4151 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4152 }
4153 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4154 return status;
4155 }
4156
4157 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4158 {
4159 unsigned int attrwords = XDR_QUADLEN(attrlen);
4160 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4161
4162 if (unlikely(attrwords != nwords)) {
4163 dprintk("%s: server returned incorrect attribute length: "
4164 "%u %c %u\n",
4165 __func__,
4166 attrwords << 2,
4167 (attrwords < nwords) ? '<' : '>',
4168 nwords << 2);
4169 return -EIO;
4170 }
4171 return 0;
4172 }
4173
4174 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4175 {
4176 __be32 *p;
4177
4178 p = xdr_inline_decode(xdr, 20);
4179 if (unlikely(!p))
4180 goto out_overflow;
4181 cinfo->atomic = be32_to_cpup(p++);
4182 p = xdr_decode_hyper(p, &cinfo->before);
4183 xdr_decode_hyper(p, &cinfo->after);
4184 return 0;
4185 out_overflow:
4186 print_overflow_msg(__func__, xdr);
4187 return -EIO;
4188 }
4189
4190 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4191 {
4192 __be32 *p;
4193 uint32_t supp, acc;
4194 int status;
4195
4196 status = decode_op_hdr(xdr, OP_ACCESS);
4197 if (status)
4198 return status;
4199 p = xdr_inline_decode(xdr, 8);
4200 if (unlikely(!p))
4201 goto out_overflow;
4202 supp = be32_to_cpup(p++);
4203 acc = be32_to_cpup(p);
4204 *supported = supp;
4205 *access = acc;
4206 return 0;
4207 out_overflow:
4208 print_overflow_msg(__func__, xdr);
4209 return -EIO;
4210 }
4211
4212 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4213 {
4214 __be32 *p;
4215
4216 p = xdr_inline_decode(xdr, len);
4217 if (likely(p)) {
4218 memcpy(buf, p, len);
4219 return 0;
4220 }
4221 print_overflow_msg(__func__, xdr);
4222 return -EIO;
4223 }
4224
4225 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4226 {
4227 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4228 }
4229
4230 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4231 {
4232 int status;
4233
4234 status = decode_op_hdr(xdr, OP_CLOSE);
4235 if (status != -EIO)
4236 nfs_increment_open_seqid(status, res->seqid);
4237 if (!status)
4238 status = decode_stateid(xdr, &res->stateid);
4239 return status;
4240 }
4241
4242 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4243 {
4244 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4245 }
4246
4247 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4248 {
4249 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4250 }
4251
4252 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4253 {
4254 int status;
4255
4256 status = decode_op_hdr(xdr, OP_COMMIT);
4257 if (!status)
4258 status = decode_write_verifier(xdr, &res->verf->verifier);
4259 return status;
4260 }
4261
4262 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4263 {
4264 __be32 *p;
4265 uint32_t bmlen;
4266 int status;
4267
4268 status = decode_op_hdr(xdr, OP_CREATE);
4269 if (status)
4270 return status;
4271 if ((status = decode_change_info(xdr, cinfo)))
4272 return status;
4273 p = xdr_inline_decode(xdr, 4);
4274 if (unlikely(!p))
4275 goto out_overflow;
4276 bmlen = be32_to_cpup(p);
4277 p = xdr_inline_decode(xdr, bmlen << 2);
4278 if (likely(p))
4279 return 0;
4280 out_overflow:
4281 print_overflow_msg(__func__, xdr);
4282 return -EIO;
4283 }
4284
4285 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4286 {
4287 unsigned int savep;
4288 uint32_t attrlen, bitmap[3] = {0};
4289 int status;
4290
4291 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4292 goto xdr_error;
4293 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4294 goto xdr_error;
4295 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4296 goto xdr_error;
4297 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4298 goto xdr_error;
4299 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4300 &res->fh_expire_type)) != 0)
4301 goto xdr_error;
4302 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4303 goto xdr_error;
4304 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4305 goto xdr_error;
4306 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4307 goto xdr_error;
4308 status = verify_attr_len(xdr, savep, attrlen);
4309 xdr_error:
4310 dprintk("%s: xdr returned %d!\n", __func__, -status);
4311 return status;
4312 }
4313
4314 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4315 {
4316 unsigned int savep;
4317 uint32_t attrlen, bitmap[3] = {0};
4318 int status;
4319
4320 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4321 goto xdr_error;
4322 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4323 goto xdr_error;
4324 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4325 goto xdr_error;
4326
4327 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4328 goto xdr_error;
4329 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4330 goto xdr_error;
4331 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4332 goto xdr_error;
4333 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4334 goto xdr_error;
4335 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4336 goto xdr_error;
4337 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4338 goto xdr_error;
4339
4340 status = verify_attr_len(xdr, savep, attrlen);
4341 xdr_error:
4342 dprintk("%s: xdr returned %d!\n", __func__, -status);
4343 return status;
4344 }
4345
4346 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4347 {
4348 unsigned int savep;
4349 uint32_t attrlen, bitmap[3] = {0};
4350 int status;
4351
4352 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4353 goto xdr_error;
4354 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4355 goto xdr_error;
4356 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4357 goto xdr_error;
4358
4359 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4360 goto xdr_error;
4361 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4362 goto xdr_error;
4363
4364 status = verify_attr_len(xdr, savep, attrlen);
4365 xdr_error:
4366 dprintk("%s: xdr returned %d!\n", __func__, -status);
4367 return status;
4368 }
4369
4370 static int decode_threshold_hint(struct xdr_stream *xdr,
4371 uint32_t *bitmap,
4372 uint64_t *res,
4373 uint32_t hint_bit)
4374 {
4375 __be32 *p;
4376
4377 *res = 0;
4378 if (likely(bitmap[0] & hint_bit)) {
4379 p = xdr_inline_decode(xdr, 8);
4380 if (unlikely(!p))
4381 goto out_overflow;
4382 xdr_decode_hyper(p, res);
4383 }
4384 return 0;
4385 out_overflow:
4386 print_overflow_msg(__func__, xdr);
4387 return -EIO;
4388 }
4389
4390 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4391 struct nfs4_threshold *res)
4392 {
4393 __be32 *p;
4394 unsigned int savep;
4395 uint32_t bitmap[3] = {0,}, attrlen;
4396 int status;
4397
4398 /* layout type */
4399 p = xdr_inline_decode(xdr, 4);
4400 if (unlikely(!p)) {
4401 print_overflow_msg(__func__, xdr);
4402 return -EIO;
4403 }
4404 res->l_type = be32_to_cpup(p);
4405
4406 /* thi_hintset bitmap */
4407 status = decode_attr_bitmap(xdr, bitmap);
4408 if (status < 0)
4409 goto xdr_error;
4410
4411 /* thi_hintlist length */
4412 status = decode_attr_length(xdr, &attrlen, &savep);
4413 if (status < 0)
4414 goto xdr_error;
4415 /* thi_hintlist */
4416 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4417 if (status < 0)
4418 goto xdr_error;
4419 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4420 if (status < 0)
4421 goto xdr_error;
4422 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4423 THRESHOLD_RD_IO);
4424 if (status < 0)
4425 goto xdr_error;
4426 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4427 THRESHOLD_WR_IO);
4428 if (status < 0)
4429 goto xdr_error;
4430
4431 status = verify_attr_len(xdr, savep, attrlen);
4432 res->bm = bitmap[0];
4433
4434 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4435 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4436 res->wr_io_sz);
4437 xdr_error:
4438 dprintk("%s ret=%d!\n", __func__, status);
4439 return status;
4440 }
4441
4442 /*
4443 * Thresholds on pNFS direct I/O vrs MDS I/O
4444 */
4445 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4446 uint32_t *bitmap,
4447 struct nfs4_threshold *res)
4448 {
4449 __be32 *p;
4450 int status = 0;
4451 uint32_t num;
4452
4453 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4454 return -EIO;
4455 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4456 /* Did the server return an unrequested attribute? */
4457 if (unlikely(res == NULL))
4458 return -EREMOTEIO;
4459 p = xdr_inline_decode(xdr, 4);
4460 if (unlikely(!p))
4461 goto out_overflow;
4462 num = be32_to_cpup(p);
4463 if (num == 0)
4464 return 0;
4465 if (num > 1)
4466 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4467 "drivers per filesystem not supported\n",
4468 __func__);
4469
4470 status = decode_first_threshold_item4(xdr, res);
4471 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4472 }
4473 return status;
4474 out_overflow:
4475 print_overflow_msg(__func__, xdr);
4476 return -EIO;
4477 }
4478
4479 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4480 struct nfs_fattr *fattr, struct nfs_fh *fh,
4481 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4482 const struct nfs_server *server)
4483 {
4484 int status;
4485 umode_t fmode = 0;
4486 uint32_t type;
4487 int32_t err;
4488
4489 status = decode_attr_type(xdr, bitmap, &type);
4490 if (status < 0)
4491 goto xdr_error;
4492 fattr->mode = 0;
4493 if (status != 0) {
4494 fattr->mode |= nfs_type2fmt[type];
4495 fattr->valid |= status;
4496 }
4497
4498 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4499 if (status < 0)
4500 goto xdr_error;
4501 fattr->valid |= status;
4502
4503 status = decode_attr_size(xdr, bitmap, &fattr->size);
4504 if (status < 0)
4505 goto xdr_error;
4506 fattr->valid |= status;
4507
4508 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4509 if (status < 0)
4510 goto xdr_error;
4511 fattr->valid |= status;
4512
4513 err = 0;
4514 status = decode_attr_error(xdr, bitmap, &err);
4515 if (status < 0)
4516 goto xdr_error;
4517
4518 status = decode_attr_filehandle(xdr, bitmap, fh);
4519 if (status < 0)
4520 goto xdr_error;
4521
4522 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4523 if (status < 0)
4524 goto xdr_error;
4525 fattr->valid |= status;
4526
4527 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4528 if (status < 0)
4529 goto xdr_error;
4530 fattr->valid |= status;
4531
4532 status = decode_attr_mode(xdr, bitmap, &fmode);
4533 if (status < 0)
4534 goto xdr_error;
4535 if (status != 0) {
4536 fattr->mode |= fmode;
4537 fattr->valid |= status;
4538 }
4539
4540 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4541 if (status < 0)
4542 goto xdr_error;
4543 fattr->valid |= status;
4544
4545 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4546 if (status < 0)
4547 goto xdr_error;
4548 fattr->valid |= status;
4549
4550 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4551 if (status < 0)
4552 goto xdr_error;
4553 fattr->valid |= status;
4554
4555 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4556 if (status < 0)
4557 goto xdr_error;
4558 fattr->valid |= status;
4559
4560 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4561 if (status < 0)
4562 goto xdr_error;
4563 fattr->valid |= status;
4564
4565 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4566 if (status < 0)
4567 goto xdr_error;
4568 fattr->valid |= status;
4569
4570 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4571 if (status < 0)
4572 goto xdr_error;
4573 fattr->valid |= status;
4574
4575 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4576 if (status < 0)
4577 goto xdr_error;
4578 fattr->valid |= status;
4579
4580 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4581 if (status < 0)
4582 goto xdr_error;
4583 fattr->valid |= status;
4584
4585 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4586 if (status < 0)
4587 goto xdr_error;
4588
4589 if (label) {
4590 status = decode_attr_security_label(xdr, bitmap, label);
4591 if (status < 0)
4592 goto xdr_error;
4593 fattr->valid |= status;
4594 }
4595
4596 xdr_error:
4597 dprintk("%s: xdr returned %d\n", __func__, -status);
4598 return status;
4599 }
4600
4601 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4602 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4603 struct nfs4_label *label, const struct nfs_server *server)
4604 {
4605 unsigned int savep;
4606 uint32_t attrlen,
4607 bitmap[3] = {0};
4608 int status;
4609
4610 status = decode_op_hdr(xdr, OP_GETATTR);
4611 if (status < 0)
4612 goto xdr_error;
4613
4614 status = decode_attr_bitmap(xdr, bitmap);
4615 if (status < 0)
4616 goto xdr_error;
4617
4618 status = decode_attr_length(xdr, &attrlen, &savep);
4619 if (status < 0)
4620 goto xdr_error;
4621
4622 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4623 label, server);
4624 if (status < 0)
4625 goto xdr_error;
4626
4627 status = verify_attr_len(xdr, savep, attrlen);
4628 xdr_error:
4629 dprintk("%s: xdr returned %d\n", __func__, -status);
4630 return status;
4631 }
4632
4633 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4634 struct nfs4_label *label, const struct nfs_server *server)
4635 {
4636 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4637 }
4638
4639 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4640 const struct nfs_server *server)
4641 {
4642 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4643 }
4644
4645 /*
4646 * Decode potentially multiple layout types. Currently we only support
4647 * one layout driver per file system.
4648 */
4649 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4650 uint32_t *layouttype)
4651 {
4652 uint32_t *p;
4653 int num;
4654
4655 p = xdr_inline_decode(xdr, 4);
4656 if (unlikely(!p))
4657 goto out_overflow;
4658 num = be32_to_cpup(p);
4659
4660 /* pNFS is not supported by the underlying file system */
4661 if (num == 0) {
4662 *layouttype = 0;
4663 return 0;
4664 }
4665 if (num > 1)
4666 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4667 "drivers per filesystem not supported\n", __func__);
4668
4669 /* Decode and set first layout type, move xdr->p past unused types */
4670 p = xdr_inline_decode(xdr, num * 4);
4671 if (unlikely(!p))
4672 goto out_overflow;
4673 *layouttype = be32_to_cpup(p);
4674 return 0;
4675 out_overflow:
4676 print_overflow_msg(__func__, xdr);
4677 return -EIO;
4678 }
4679
4680 /*
4681 * The type of file system exported.
4682 * Note we must ensure that layouttype is set in any non-error case.
4683 */
4684 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4685 uint32_t *layouttype)
4686 {
4687 int status = 0;
4688
4689 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4690 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4691 return -EIO;
4692 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4693 status = decode_first_pnfs_layout_type(xdr, layouttype);
4694 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4695 } else
4696 *layouttype = 0;
4697 return status;
4698 }
4699
4700 /*
4701 * The prefered block size for layout directed io
4702 */
4703 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4704 uint32_t *res)
4705 {
4706 __be32 *p;
4707
4708 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4709 *res = 0;
4710 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4711 p = xdr_inline_decode(xdr, 4);
4712 if (unlikely(!p)) {
4713 print_overflow_msg(__func__, xdr);
4714 return -EIO;
4715 }
4716 *res = be32_to_cpup(p);
4717 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4718 }
4719 return 0;
4720 }
4721
4722 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4723 {
4724 unsigned int savep;
4725 uint32_t attrlen, bitmap[3];
4726 int status;
4727
4728 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4729 goto xdr_error;
4730 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4731 goto xdr_error;
4732 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4733 goto xdr_error;
4734
4735 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4736
4737 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4738 goto xdr_error;
4739 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4740 goto xdr_error;
4741 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4742 goto xdr_error;
4743 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4744 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4745 goto xdr_error;
4746 fsinfo->wtpref = fsinfo->wtmax;
4747 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4748 if (status != 0)
4749 goto xdr_error;
4750 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4751 if (status != 0)
4752 goto xdr_error;
4753 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4754 if (status)
4755 goto xdr_error;
4756
4757 status = verify_attr_len(xdr, savep, attrlen);
4758 xdr_error:
4759 dprintk("%s: xdr returned %d!\n", __func__, -status);
4760 return status;
4761 }
4762
4763 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4764 {
4765 __be32 *p;
4766 uint32_t len;
4767 int status;
4768
4769 /* Zero handle first to allow comparisons */
4770 memset(fh, 0, sizeof(*fh));
4771
4772 status = decode_op_hdr(xdr, OP_GETFH);
4773 if (status)
4774 return status;
4775
4776 p = xdr_inline_decode(xdr, 4);
4777 if (unlikely(!p))
4778 goto out_overflow;
4779 len = be32_to_cpup(p);
4780 if (len > NFS4_FHSIZE)
4781 return -EIO;
4782 fh->size = len;
4783 p = xdr_inline_decode(xdr, len);
4784 if (unlikely(!p))
4785 goto out_overflow;
4786 memcpy(fh->data, p, len);
4787 return 0;
4788 out_overflow:
4789 print_overflow_msg(__func__, xdr);
4790 return -EIO;
4791 }
4792
4793 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4794 {
4795 int status;
4796
4797 status = decode_op_hdr(xdr, OP_LINK);
4798 if (status)
4799 return status;
4800 return decode_change_info(xdr, cinfo);
4801 }
4802
4803 /*
4804 * We create the owner, so we know a proper owner.id length is 4.
4805 */
4806 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4807 {
4808 uint64_t offset, length, clientid;
4809 __be32 *p;
4810 uint32_t namelen, type;
4811
4812 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4813 if (unlikely(!p))
4814 goto out_overflow;
4815 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4816 p = xdr_decode_hyper(p, &length);
4817 type = be32_to_cpup(p++); /* 4 byte read */
4818 if (fl != NULL) { /* manipulate file lock */
4819 fl->fl_start = (loff_t)offset;
4820 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4821 if (length == ~(uint64_t)0)
4822 fl->fl_end = OFFSET_MAX;
4823 fl->fl_type = F_WRLCK;
4824 if (type & 1)
4825 fl->fl_type = F_RDLCK;
4826 fl->fl_pid = 0;
4827 }
4828 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4829 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4830 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4831 if (likely(p))
4832 return -NFS4ERR_DENIED;
4833 out_overflow:
4834 print_overflow_msg(__func__, xdr);
4835 return -EIO;
4836 }
4837
4838 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4839 {
4840 int status;
4841
4842 status = decode_op_hdr(xdr, OP_LOCK);
4843 if (status == -EIO)
4844 goto out;
4845 if (status == 0) {
4846 status = decode_stateid(xdr, &res->stateid);
4847 if (unlikely(status))
4848 goto out;
4849 } else if (status == -NFS4ERR_DENIED)
4850 status = decode_lock_denied(xdr, NULL);
4851 if (res->open_seqid != NULL)
4852 nfs_increment_open_seqid(status, res->open_seqid);
4853 nfs_increment_lock_seqid(status, res->lock_seqid);
4854 out:
4855 return status;
4856 }
4857
4858 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4859 {
4860 int status;
4861 status = decode_op_hdr(xdr, OP_LOCKT);
4862 if (status == -NFS4ERR_DENIED)
4863 return decode_lock_denied(xdr, res->denied);
4864 return status;
4865 }
4866
4867 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4868 {
4869 int status;
4870
4871 status = decode_op_hdr(xdr, OP_LOCKU);
4872 if (status != -EIO)
4873 nfs_increment_lock_seqid(status, res->seqid);
4874 if (status == 0)
4875 status = decode_stateid(xdr, &res->stateid);
4876 return status;
4877 }
4878
4879 static int decode_release_lockowner(struct xdr_stream *xdr)
4880 {
4881 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4882 }
4883
4884 static int decode_lookup(struct xdr_stream *xdr)
4885 {
4886 return decode_op_hdr(xdr, OP_LOOKUP);
4887 }
4888
4889 /* This is too sick! */
4890 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4891 {
4892 __be32 *p;
4893 uint32_t limit_type, nblocks, blocksize;
4894
4895 p = xdr_inline_decode(xdr, 12);
4896 if (unlikely(!p))
4897 goto out_overflow;
4898 limit_type = be32_to_cpup(p++);
4899 switch (limit_type) {
4900 case 1:
4901 xdr_decode_hyper(p, maxsize);
4902 break;
4903 case 2:
4904 nblocks = be32_to_cpup(p++);
4905 blocksize = be32_to_cpup(p);
4906 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4907 }
4908 return 0;
4909 out_overflow:
4910 print_overflow_msg(__func__, xdr);
4911 return -EIO;
4912 }
4913
4914 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4915 {
4916 __be32 *p;
4917 uint32_t delegation_type;
4918 int status;
4919
4920 p = xdr_inline_decode(xdr, 4);
4921 if (unlikely(!p))
4922 goto out_overflow;
4923 delegation_type = be32_to_cpup(p);
4924 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4925 res->delegation_type = 0;
4926 return 0;
4927 }
4928 status = decode_stateid(xdr, &res->delegation);
4929 if (unlikely(status))
4930 return status;
4931 p = xdr_inline_decode(xdr, 4);
4932 if (unlikely(!p))
4933 goto out_overflow;
4934 res->do_recall = be32_to_cpup(p);
4935
4936 switch (delegation_type) {
4937 case NFS4_OPEN_DELEGATE_READ:
4938 res->delegation_type = FMODE_READ;
4939 break;
4940 case NFS4_OPEN_DELEGATE_WRITE:
4941 res->delegation_type = FMODE_WRITE|FMODE_READ;
4942 if (decode_space_limit(xdr, &res->maxsize) < 0)
4943 return -EIO;
4944 }
4945 return decode_ace(xdr, NULL, res->server->nfs_client);
4946 out_overflow:
4947 print_overflow_msg(__func__, xdr);
4948 return -EIO;
4949 }
4950
4951 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4952 {
4953 __be32 *p;
4954 uint32_t savewords, bmlen, i;
4955 int status;
4956
4957 status = decode_op_hdr(xdr, OP_OPEN);
4958 if (status != -EIO)
4959 nfs_increment_open_seqid(status, res->seqid);
4960 if (!status)
4961 status = decode_stateid(xdr, &res->stateid);
4962 if (unlikely(status))
4963 return status;
4964
4965 decode_change_info(xdr, &res->cinfo);
4966
4967 p = xdr_inline_decode(xdr, 8);
4968 if (unlikely(!p))
4969 goto out_overflow;
4970 res->rflags = be32_to_cpup(p++);
4971 bmlen = be32_to_cpup(p);
4972 if (bmlen > 10)
4973 goto xdr_error;
4974
4975 p = xdr_inline_decode(xdr, bmlen << 2);
4976 if (unlikely(!p))
4977 goto out_overflow;
4978 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4979 for (i = 0; i < savewords; ++i)
4980 res->attrset[i] = be32_to_cpup(p++);
4981 for (; i < NFS4_BITMAP_SIZE; i++)
4982 res->attrset[i] = 0;
4983
4984 return decode_delegation(xdr, res);
4985 xdr_error:
4986 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4987 return -EIO;
4988 out_overflow:
4989 print_overflow_msg(__func__, xdr);
4990 return -EIO;
4991 }
4992
4993 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4994 {
4995 int status;
4996
4997 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4998 if (status != -EIO)
4999 nfs_increment_open_seqid(status, res->seqid);
5000 if (!status)
5001 status = decode_stateid(xdr, &res->stateid);
5002 return status;
5003 }
5004
5005 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5006 {
5007 int status;
5008
5009 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5010 if (status != -EIO)
5011 nfs_increment_open_seqid(status, res->seqid);
5012 if (!status)
5013 status = decode_stateid(xdr, &res->stateid);
5014 return status;
5015 }
5016
5017 static int decode_putfh(struct xdr_stream *xdr)
5018 {
5019 return decode_op_hdr(xdr, OP_PUTFH);
5020 }
5021
5022 static int decode_putrootfh(struct xdr_stream *xdr)
5023 {
5024 return decode_op_hdr(xdr, OP_PUTROOTFH);
5025 }
5026
5027 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
5028 {
5029 __be32 *p;
5030 uint32_t count, eof, recvd;
5031 int status;
5032
5033 status = decode_op_hdr(xdr, OP_READ);
5034 if (status)
5035 return status;
5036 p = xdr_inline_decode(xdr, 8);
5037 if (unlikely(!p))
5038 goto out_overflow;
5039 eof = be32_to_cpup(p++);
5040 count = be32_to_cpup(p);
5041 recvd = xdr_read_pages(xdr, count);
5042 if (count > recvd) {
5043 dprintk("NFS: server cheating in read reply: "
5044 "count %u > recvd %u\n", count, recvd);
5045 count = recvd;
5046 eof = 0;
5047 }
5048 res->eof = eof;
5049 res->count = count;
5050 return 0;
5051 out_overflow:
5052 print_overflow_msg(__func__, xdr);
5053 return -EIO;
5054 }
5055
5056 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5057 {
5058 int status;
5059 __be32 verf[2];
5060
5061 status = decode_op_hdr(xdr, OP_READDIR);
5062 if (!status)
5063 status = decode_verifier(xdr, readdir->verifier.data);
5064 if (unlikely(status))
5065 return status;
5066 memcpy(verf, readdir->verifier.data, sizeof(verf));
5067 dprintk("%s: verifier = %08x:%08x\n",
5068 __func__, verf[0], verf[1]);
5069 return xdr_read_pages(xdr, xdr->buf->page_len);
5070 }
5071
5072 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5073 {
5074 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5075 u32 len, recvd;
5076 __be32 *p;
5077 int status;
5078
5079 status = decode_op_hdr(xdr, OP_READLINK);
5080 if (status)
5081 return status;
5082
5083 /* Convert length of symlink */
5084 p = xdr_inline_decode(xdr, 4);
5085 if (unlikely(!p))
5086 goto out_overflow;
5087 len = be32_to_cpup(p);
5088 if (len >= rcvbuf->page_len || len <= 0) {
5089 dprintk("nfs: server returned giant symlink!\n");
5090 return -ENAMETOOLONG;
5091 }
5092 recvd = xdr_read_pages(xdr, len);
5093 if (recvd < len) {
5094 dprintk("NFS: server cheating in readlink reply: "
5095 "count %u > recvd %u\n", len, recvd);
5096 return -EIO;
5097 }
5098 /*
5099 * The XDR encode routine has set things up so that
5100 * the link text will be copied directly into the
5101 * buffer. We just have to do overflow-checking,
5102 * and and null-terminate the text (the VFS expects
5103 * null-termination).
5104 */
5105 xdr_terminate_string(rcvbuf, len);
5106 return 0;
5107 out_overflow:
5108 print_overflow_msg(__func__, xdr);
5109 return -EIO;
5110 }
5111
5112 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5113 {
5114 int status;
5115
5116 status = decode_op_hdr(xdr, OP_REMOVE);
5117 if (status)
5118 goto out;
5119 status = decode_change_info(xdr, cinfo);
5120 out:
5121 return status;
5122 }
5123
5124 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5125 struct nfs4_change_info *new_cinfo)
5126 {
5127 int status;
5128
5129 status = decode_op_hdr(xdr, OP_RENAME);
5130 if (status)
5131 goto out;
5132 if ((status = decode_change_info(xdr, old_cinfo)))
5133 goto out;
5134 status = decode_change_info(xdr, new_cinfo);
5135 out:
5136 return status;
5137 }
5138
5139 static int decode_renew(struct xdr_stream *xdr)
5140 {
5141 return decode_op_hdr(xdr, OP_RENEW);
5142 }
5143
5144 static int
5145 decode_restorefh(struct xdr_stream *xdr)
5146 {
5147 return decode_op_hdr(xdr, OP_RESTOREFH);
5148 }
5149
5150 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5151 struct nfs_getaclres *res)
5152 {
5153 unsigned int savep;
5154 uint32_t attrlen,
5155 bitmap[3] = {0};
5156 int status;
5157 unsigned int pg_offset;
5158
5159 res->acl_len = 0;
5160 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5161 goto out;
5162
5163 xdr_enter_page(xdr, xdr->buf->page_len);
5164
5165 /* Calculate the offset of the page data */
5166 pg_offset = xdr->buf->head[0].iov_len;
5167
5168 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5169 goto out;
5170 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5171 goto out;
5172
5173 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5174 return -EIO;
5175 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5176
5177 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5178 * are stored with the acl data to handle the problem of
5179 * variable length bitmaps.*/
5180 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5181 res->acl_len = attrlen;
5182
5183 /* Check for receive buffer overflow */
5184 if (res->acl_len > (xdr->nwords << 2) ||
5185 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5186 res->acl_flags |= NFS4_ACL_TRUNC;
5187 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5188 attrlen, xdr->nwords << 2);
5189 }
5190 } else
5191 status = -EOPNOTSUPP;
5192
5193 out:
5194 return status;
5195 }
5196
5197 static int
5198 decode_savefh(struct xdr_stream *xdr)
5199 {
5200 return decode_op_hdr(xdr, OP_SAVEFH);
5201 }
5202
5203 static int decode_setattr(struct xdr_stream *xdr)
5204 {
5205 __be32 *p;
5206 uint32_t bmlen;
5207 int status;
5208
5209 status = decode_op_hdr(xdr, OP_SETATTR);
5210 if (status)
5211 return status;
5212 p = xdr_inline_decode(xdr, 4);
5213 if (unlikely(!p))
5214 goto out_overflow;
5215 bmlen = be32_to_cpup(p);
5216 p = xdr_inline_decode(xdr, bmlen << 2);
5217 if (likely(p))
5218 return 0;
5219 out_overflow:
5220 print_overflow_msg(__func__, xdr);
5221 return -EIO;
5222 }
5223
5224 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5225 {
5226 __be32 *p;
5227 uint32_t opnum;
5228 int32_t nfserr;
5229
5230 p = xdr_inline_decode(xdr, 8);
5231 if (unlikely(!p))
5232 goto out_overflow;
5233 opnum = be32_to_cpup(p++);
5234 if (opnum != OP_SETCLIENTID) {
5235 dprintk("nfs: decode_setclientid: Server returned operation"
5236 " %d\n", opnum);
5237 return -EIO;
5238 }
5239 nfserr = be32_to_cpup(p);
5240 if (nfserr == NFS_OK) {
5241 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5242 if (unlikely(!p))
5243 goto out_overflow;
5244 p = xdr_decode_hyper(p, &res->clientid);
5245 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5246 } else if (nfserr == NFSERR_CLID_INUSE) {
5247 uint32_t len;
5248
5249 /* skip netid string */
5250 p = xdr_inline_decode(xdr, 4);
5251 if (unlikely(!p))
5252 goto out_overflow;
5253 len = be32_to_cpup(p);
5254 p = xdr_inline_decode(xdr, len);
5255 if (unlikely(!p))
5256 goto out_overflow;
5257
5258 /* skip uaddr string */
5259 p = xdr_inline_decode(xdr, 4);
5260 if (unlikely(!p))
5261 goto out_overflow;
5262 len = be32_to_cpup(p);
5263 p = xdr_inline_decode(xdr, len);
5264 if (unlikely(!p))
5265 goto out_overflow;
5266 return -NFSERR_CLID_INUSE;
5267 } else
5268 return nfs4_stat_to_errno(nfserr);
5269
5270 return 0;
5271 out_overflow:
5272 print_overflow_msg(__func__, xdr);
5273 return -EIO;
5274 }
5275
5276 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5277 {
5278 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5279 }
5280
5281 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5282 {
5283 __be32 *p;
5284 int status;
5285
5286 status = decode_op_hdr(xdr, OP_WRITE);
5287 if (status)
5288 return status;
5289
5290 p = xdr_inline_decode(xdr, 8);
5291 if (unlikely(!p))
5292 goto out_overflow;
5293 res->count = be32_to_cpup(p++);
5294 res->verf->committed = be32_to_cpup(p++);
5295 return decode_write_verifier(xdr, &res->verf->verifier);
5296 out_overflow:
5297 print_overflow_msg(__func__, xdr);
5298 return -EIO;
5299 }
5300
5301 static int decode_delegreturn(struct xdr_stream *xdr)
5302 {
5303 return decode_op_hdr(xdr, OP_DELEGRETURN);
5304 }
5305
5306 static int decode_secinfo_gss(struct xdr_stream *xdr,
5307 struct nfs4_secinfo4 *flavor)
5308 {
5309 u32 oid_len;
5310 __be32 *p;
5311
5312 p = xdr_inline_decode(xdr, 4);
5313 if (unlikely(!p))
5314 goto out_overflow;
5315 oid_len = be32_to_cpup(p);
5316 if (oid_len > GSS_OID_MAX_LEN)
5317 goto out_err;
5318
5319 p = xdr_inline_decode(xdr, oid_len);
5320 if (unlikely(!p))
5321 goto out_overflow;
5322 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5323 flavor->flavor_info.oid.len = oid_len;
5324
5325 p = xdr_inline_decode(xdr, 8);
5326 if (unlikely(!p))
5327 goto out_overflow;
5328 flavor->flavor_info.qop = be32_to_cpup(p++);
5329 flavor->flavor_info.service = be32_to_cpup(p);
5330
5331 return 0;
5332
5333 out_overflow:
5334 print_overflow_msg(__func__, xdr);
5335 return -EIO;
5336 out_err:
5337 return -EINVAL;
5338 }
5339
5340 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5341 {
5342 struct nfs4_secinfo4 *sec_flavor;
5343 unsigned int i, num_flavors;
5344 int status;
5345 __be32 *p;
5346
5347 p = xdr_inline_decode(xdr, 4);
5348 if (unlikely(!p))
5349 goto out_overflow;
5350
5351 res->flavors->num_flavors = 0;
5352 num_flavors = be32_to_cpup(p);
5353
5354 for (i = 0; i < num_flavors; i++) {
5355 sec_flavor = &res->flavors->flavors[i];
5356 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5357 break;
5358
5359 p = xdr_inline_decode(xdr, 4);
5360 if (unlikely(!p))
5361 goto out_overflow;
5362 sec_flavor->flavor = be32_to_cpup(p);
5363
5364 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5365 status = decode_secinfo_gss(xdr, sec_flavor);
5366 if (status)
5367 goto out;
5368 }
5369 res->flavors->num_flavors++;
5370 }
5371
5372 status = 0;
5373 out:
5374 return status;
5375 out_overflow:
5376 print_overflow_msg(__func__, xdr);
5377 return -EIO;
5378 }
5379
5380 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5381 {
5382 int status = decode_op_hdr(xdr, OP_SECINFO);
5383 if (status)
5384 return status;
5385 return decode_secinfo_common(xdr, res);
5386 }
5387
5388 #if defined(CONFIG_NFS_V4_1)
5389 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5390 {
5391 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5392 if (status)
5393 return status;
5394 return decode_secinfo_common(xdr, res);
5395 }
5396
5397 static int decode_exchange_id(struct xdr_stream *xdr,
5398 struct nfs41_exchange_id_res *res)
5399 {
5400 __be32 *p;
5401 uint32_t dummy;
5402 char *dummy_str;
5403 int status;
5404 uint32_t impl_id_count;
5405
5406 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5407 if (status)
5408 return status;
5409
5410 p = xdr_inline_decode(xdr, 8);
5411 if (unlikely(!p))
5412 goto out_overflow;
5413 xdr_decode_hyper(p, &res->clientid);
5414 p = xdr_inline_decode(xdr, 12);
5415 if (unlikely(!p))
5416 goto out_overflow;
5417 res->seqid = be32_to_cpup(p++);
5418 res->flags = be32_to_cpup(p++);
5419
5420 /* We ask for SP4_NONE */
5421 dummy = be32_to_cpup(p);
5422 if (dummy != SP4_NONE)
5423 return -EIO;
5424
5425 /* server_owner4.so_minor_id */
5426 p = xdr_inline_decode(xdr, 8);
5427 if (unlikely(!p))
5428 goto out_overflow;
5429 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5430
5431 /* server_owner4.so_major_id */
5432 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5433 if (unlikely(status))
5434 return status;
5435 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5436 return -EIO;
5437 memcpy(res->server_owner->major_id, dummy_str, dummy);
5438 res->server_owner->major_id_sz = dummy;
5439
5440 /* server_scope4 */
5441 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5442 if (unlikely(status))
5443 return status;
5444 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5445 return -EIO;
5446 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5447 res->server_scope->server_scope_sz = dummy;
5448
5449 /* Implementation Id */
5450 p = xdr_inline_decode(xdr, 4);
5451 if (unlikely(!p))
5452 goto out_overflow;
5453 impl_id_count = be32_to_cpup(p++);
5454
5455 if (impl_id_count) {
5456 /* nii_domain */
5457 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5458 if (unlikely(status))
5459 return status;
5460 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5461 return -EIO;
5462 memcpy(res->impl_id->domain, dummy_str, dummy);
5463
5464 /* nii_name */
5465 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5466 if (unlikely(status))
5467 return status;
5468 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5469 return -EIO;
5470 memcpy(res->impl_id->name, dummy_str, dummy);
5471
5472 /* nii_date */
5473 p = xdr_inline_decode(xdr, 12);
5474 if (unlikely(!p))
5475 goto out_overflow;
5476 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5477 res->impl_id->date.nseconds = be32_to_cpup(p);
5478
5479 /* if there's more than one entry, ignore the rest */
5480 }
5481 return 0;
5482 out_overflow:
5483 print_overflow_msg(__func__, xdr);
5484 return -EIO;
5485 }
5486
5487 static int decode_chan_attrs(struct xdr_stream *xdr,
5488 struct nfs4_channel_attrs *attrs)
5489 {
5490 __be32 *p;
5491 u32 nr_attrs, val;
5492
5493 p = xdr_inline_decode(xdr, 28);
5494 if (unlikely(!p))
5495 goto out_overflow;
5496 val = be32_to_cpup(p++); /* headerpadsz */
5497 if (val)
5498 return -EINVAL; /* no support for header padding yet */
5499 attrs->max_rqst_sz = be32_to_cpup(p++);
5500 attrs->max_resp_sz = be32_to_cpup(p++);
5501 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5502 attrs->max_ops = be32_to_cpup(p++);
5503 attrs->max_reqs = be32_to_cpup(p++);
5504 nr_attrs = be32_to_cpup(p);
5505 if (unlikely(nr_attrs > 1)) {
5506 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5507 "count %u\n", __func__, nr_attrs);
5508 return -EINVAL;
5509 }
5510 if (nr_attrs == 1) {
5511 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5512 if (unlikely(!p))
5513 goto out_overflow;
5514 }
5515 return 0;
5516 out_overflow:
5517 print_overflow_msg(__func__, xdr);
5518 return -EIO;
5519 }
5520
5521 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5522 {
5523 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5524 }
5525
5526 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5527 struct nfs41_bind_conn_to_session_res *res)
5528 {
5529 __be32 *p;
5530 int status;
5531
5532 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5533 if (!status)
5534 status = decode_sessionid(xdr, &res->session->sess_id);
5535 if (unlikely(status))
5536 return status;
5537
5538 /* dir flags, rdma mode bool */
5539 p = xdr_inline_decode(xdr, 8);
5540 if (unlikely(!p))
5541 goto out_overflow;
5542
5543 res->dir = be32_to_cpup(p++);
5544 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5545 return -EIO;
5546 if (be32_to_cpup(p) == 0)
5547 res->use_conn_in_rdma_mode = false;
5548 else
5549 res->use_conn_in_rdma_mode = true;
5550
5551 return 0;
5552 out_overflow:
5553 print_overflow_msg(__func__, xdr);
5554 return -EIO;
5555 }
5556
5557 static int decode_create_session(struct xdr_stream *xdr,
5558 struct nfs41_create_session_res *res)
5559 {
5560 __be32 *p;
5561 int status;
5562 struct nfs_client *clp = res->client;
5563 struct nfs4_session *session = clp->cl_session;
5564
5565 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5566 if (!status)
5567 status = decode_sessionid(xdr, &session->sess_id);
5568 if (unlikely(status))
5569 return status;
5570
5571 /* seqid, flags */
5572 p = xdr_inline_decode(xdr, 8);
5573 if (unlikely(!p))
5574 goto out_overflow;
5575 clp->cl_seqid = be32_to_cpup(p++);
5576 session->flags = be32_to_cpup(p);
5577
5578 /* Channel attributes */
5579 status = decode_chan_attrs(xdr, &session->fc_attrs);
5580 if (!status)
5581 status = decode_chan_attrs(xdr, &session->bc_attrs);
5582 return status;
5583 out_overflow:
5584 print_overflow_msg(__func__, xdr);
5585 return -EIO;
5586 }
5587
5588 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5589 {
5590 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5591 }
5592
5593 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5594 {
5595 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5596 }
5597
5598 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5599 {
5600 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5601 }
5602 #endif /* CONFIG_NFS_V4_1 */
5603
5604 static int decode_sequence(struct xdr_stream *xdr,
5605 struct nfs4_sequence_res *res,
5606 struct rpc_rqst *rqstp)
5607 {
5608 #if defined(CONFIG_NFS_V4_1)
5609 struct nfs4_session *session;
5610 struct nfs4_sessionid id;
5611 u32 dummy;
5612 int status;
5613 __be32 *p;
5614
5615 if (res->sr_slot == NULL)
5616 return 0;
5617
5618 status = decode_op_hdr(xdr, OP_SEQUENCE);
5619 if (!status)
5620 status = decode_sessionid(xdr, &id);
5621 if (unlikely(status))
5622 goto out_err;
5623
5624 /*
5625 * If the server returns different values for sessionID, slotID or
5626 * sequence number, the server is looney tunes.
5627 */
5628 status = -EREMOTEIO;
5629 session = res->sr_slot->table->session;
5630
5631 if (memcmp(id.data, session->sess_id.data,
5632 NFS4_MAX_SESSIONID_LEN)) {
5633 dprintk("%s Invalid session id\n", __func__);
5634 goto out_err;
5635 }
5636
5637 p = xdr_inline_decode(xdr, 20);
5638 if (unlikely(!p))
5639 goto out_overflow;
5640
5641 /* seqid */
5642 dummy = be32_to_cpup(p++);
5643 if (dummy != res->sr_slot->seq_nr) {
5644 dprintk("%s Invalid sequence number\n", __func__);
5645 goto out_err;
5646 }
5647 /* slot id */
5648 dummy = be32_to_cpup(p++);
5649 if (dummy != res->sr_slot->slot_nr) {
5650 dprintk("%s Invalid slot id\n", __func__);
5651 goto out_err;
5652 }
5653 /* highest slot id */
5654 res->sr_highest_slotid = be32_to_cpup(p++);
5655 /* target highest slot id */
5656 res->sr_target_highest_slotid = be32_to_cpup(p++);
5657 /* result flags */
5658 res->sr_status_flags = be32_to_cpup(p);
5659 status = 0;
5660 out_err:
5661 res->sr_status = status;
5662 return status;
5663 out_overflow:
5664 print_overflow_msg(__func__, xdr);
5665 status = -EIO;
5666 goto out_err;
5667 #else /* CONFIG_NFS_V4_1 */
5668 return 0;
5669 #endif /* CONFIG_NFS_V4_1 */
5670 }
5671
5672 #if defined(CONFIG_NFS_V4_1)
5673 /*
5674 * TODO: Need to handle case when EOF != true;
5675 */
5676 static int decode_getdevicelist(struct xdr_stream *xdr,
5677 struct pnfs_devicelist *res)
5678 {
5679 __be32 *p;
5680 int status, i;
5681 nfs4_verifier verftemp;
5682
5683 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5684 if (status)
5685 return status;
5686
5687 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5688 if (unlikely(!p))
5689 goto out_overflow;
5690
5691 /* TODO: Skip cookie for now */
5692 p += 2;
5693
5694 /* Read verifier */
5695 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5696
5697 res->num_devs = be32_to_cpup(p);
5698
5699 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5700
5701 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5702 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5703 __func__, res->num_devs);
5704 return -EIO;
5705 }
5706
5707 p = xdr_inline_decode(xdr,
5708 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5709 if (unlikely(!p))
5710 goto out_overflow;
5711 for (i = 0; i < res->num_devs; i++)
5712 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5713 NFS4_DEVICEID4_SIZE);
5714 res->eof = be32_to_cpup(p);
5715 return 0;
5716 out_overflow:
5717 print_overflow_msg(__func__, xdr);
5718 return -EIO;
5719 }
5720
5721 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5722 struct pnfs_device *pdev)
5723 {
5724 __be32 *p;
5725 uint32_t len, type;
5726 int status;
5727
5728 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5729 if (status) {
5730 if (status == -ETOOSMALL) {
5731 p = xdr_inline_decode(xdr, 4);
5732 if (unlikely(!p))
5733 goto out_overflow;
5734 pdev->mincount = be32_to_cpup(p);
5735 dprintk("%s: Min count too small. mincnt = %u\n",
5736 __func__, pdev->mincount);
5737 }
5738 return status;
5739 }
5740
5741 p = xdr_inline_decode(xdr, 8);
5742 if (unlikely(!p))
5743 goto out_overflow;
5744 type = be32_to_cpup(p++);
5745 if (type != pdev->layout_type) {
5746 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5747 __func__, pdev->layout_type, type);
5748 return -EINVAL;
5749 }
5750 /*
5751 * Get the length of the opaque device_addr4. xdr_read_pages places
5752 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5753 * and places the remaining xdr data in xdr_buf->tail
5754 */
5755 pdev->mincount = be32_to_cpup(p);
5756 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5757 goto out_overflow;
5758
5759 /* Parse notification bitmap, verifying that it is zero. */
5760 p = xdr_inline_decode(xdr, 4);
5761 if (unlikely(!p))
5762 goto out_overflow;
5763 len = be32_to_cpup(p);
5764 if (len) {
5765 uint32_t i;
5766
5767 p = xdr_inline_decode(xdr, 4 * len);
5768 if (unlikely(!p))
5769 goto out_overflow;
5770 for (i = 0; i < len; i++, p++) {
5771 if (be32_to_cpup(p)) {
5772 dprintk("%s: notifications not supported\n",
5773 __func__);
5774 return -EIO;
5775 }
5776 }
5777 }
5778 return 0;
5779 out_overflow:
5780 print_overflow_msg(__func__, xdr);
5781 return -EIO;
5782 }
5783
5784 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5785 struct nfs4_layoutget_res *res)
5786 {
5787 __be32 *p;
5788 int status;
5789 u32 layout_count;
5790 u32 recvd;
5791
5792 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5793 if (status)
5794 return status;
5795 p = xdr_inline_decode(xdr, 4);
5796 if (unlikely(!p))
5797 goto out_overflow;
5798 res->return_on_close = be32_to_cpup(p);
5799 decode_stateid(xdr, &res->stateid);
5800 p = xdr_inline_decode(xdr, 4);
5801 if (unlikely(!p))
5802 goto out_overflow;
5803 layout_count = be32_to_cpup(p);
5804 if (!layout_count) {
5805 dprintk("%s: server responded with empty layout array\n",
5806 __func__);
5807 return -EINVAL;
5808 }
5809
5810 p = xdr_inline_decode(xdr, 28);
5811 if (unlikely(!p))
5812 goto out_overflow;
5813 p = xdr_decode_hyper(p, &res->range.offset);
5814 p = xdr_decode_hyper(p, &res->range.length);
5815 res->range.iomode = be32_to_cpup(p++);
5816 res->type = be32_to_cpup(p++);
5817 res->layoutp->len = be32_to_cpup(p);
5818
5819 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5820 __func__,
5821 (unsigned long)res->range.offset,
5822 (unsigned long)res->range.length,
5823 res->range.iomode,
5824 res->type,
5825 res->layoutp->len);
5826
5827 recvd = xdr_read_pages(xdr, res->layoutp->len);
5828 if (res->layoutp->len > recvd) {
5829 dprintk("NFS: server cheating in layoutget reply: "
5830 "layout len %u > recvd %u\n",
5831 res->layoutp->len, recvd);
5832 return -EINVAL;
5833 }
5834
5835 if (layout_count > 1) {
5836 /* We only handle a length one array at the moment. Any
5837 * further entries are just ignored. Note that this means
5838 * the client may see a response that is less than the
5839 * minimum it requested.
5840 */
5841 dprintk("%s: server responded with %d layouts, dropping tail\n",
5842 __func__, layout_count);
5843 }
5844
5845 return 0;
5846 out_overflow:
5847 print_overflow_msg(__func__, xdr);
5848 return -EIO;
5849 }
5850
5851 static int decode_layoutreturn(struct xdr_stream *xdr,
5852 struct nfs4_layoutreturn_res *res)
5853 {
5854 __be32 *p;
5855 int status;
5856
5857 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5858 if (status)
5859 return status;
5860 p = xdr_inline_decode(xdr, 4);
5861 if (unlikely(!p))
5862 goto out_overflow;
5863 res->lrs_present = be32_to_cpup(p);
5864 if (res->lrs_present)
5865 status = decode_stateid(xdr, &res->stateid);
5866 return status;
5867 out_overflow:
5868 print_overflow_msg(__func__, xdr);
5869 return -EIO;
5870 }
5871
5872 static int decode_layoutcommit(struct xdr_stream *xdr,
5873 struct rpc_rqst *req,
5874 struct nfs4_layoutcommit_res *res)
5875 {
5876 __be32 *p;
5877 __u32 sizechanged;
5878 int status;
5879
5880 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5881 res->status = status;
5882 if (status)
5883 return status;
5884
5885 p = xdr_inline_decode(xdr, 4);
5886 if (unlikely(!p))
5887 goto out_overflow;
5888 sizechanged = be32_to_cpup(p);
5889
5890 if (sizechanged) {
5891 /* throw away new size */
5892 p = xdr_inline_decode(xdr, 8);
5893 if (unlikely(!p))
5894 goto out_overflow;
5895 }
5896 return 0;
5897 out_overflow:
5898 print_overflow_msg(__func__, xdr);
5899 return -EIO;
5900 }
5901
5902 static int decode_test_stateid(struct xdr_stream *xdr,
5903 struct nfs41_test_stateid_res *res)
5904 {
5905 __be32 *p;
5906 int status;
5907 int num_res;
5908
5909 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5910 if (status)
5911 return status;
5912
5913 p = xdr_inline_decode(xdr, 4);
5914 if (unlikely(!p))
5915 goto out_overflow;
5916 num_res = be32_to_cpup(p++);
5917 if (num_res != 1)
5918 goto out;
5919
5920 p = xdr_inline_decode(xdr, 4);
5921 if (unlikely(!p))
5922 goto out_overflow;
5923 res->status = be32_to_cpup(p++);
5924
5925 return status;
5926 out_overflow:
5927 print_overflow_msg(__func__, xdr);
5928 out:
5929 return -EIO;
5930 }
5931
5932 static int decode_free_stateid(struct xdr_stream *xdr,
5933 struct nfs41_free_stateid_res *res)
5934 {
5935 __be32 *p;
5936 int status;
5937
5938 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5939 if (status)
5940 return status;
5941
5942 p = xdr_inline_decode(xdr, 4);
5943 if (unlikely(!p))
5944 goto out_overflow;
5945 res->status = be32_to_cpup(p++);
5946 return res->status;
5947 out_overflow:
5948 print_overflow_msg(__func__, xdr);
5949 return -EIO;
5950 }
5951 #endif /* CONFIG_NFS_V4_1 */
5952
5953 /*
5954 * END OF "GENERIC" DECODE ROUTINES.
5955 */
5956
5957 /*
5958 * Decode OPEN_DOWNGRADE response
5959 */
5960 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5961 struct xdr_stream *xdr,
5962 struct nfs_closeres *res)
5963 {
5964 struct compound_hdr hdr;
5965 int status;
5966
5967 status = decode_compound_hdr(xdr, &hdr);
5968 if (status)
5969 goto out;
5970 status = decode_sequence(xdr, &res->seq_res, rqstp);
5971 if (status)
5972 goto out;
5973 status = decode_putfh(xdr);
5974 if (status)
5975 goto out;
5976 status = decode_open_downgrade(xdr, res);
5977 if (status != 0)
5978 goto out;
5979 decode_getfattr(xdr, res->fattr, res->server);
5980 out:
5981 return status;
5982 }
5983
5984 /*
5985 * Decode ACCESS response
5986 */
5987 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5988 struct nfs4_accessres *res)
5989 {
5990 struct compound_hdr hdr;
5991 int status;
5992
5993 status = decode_compound_hdr(xdr, &hdr);
5994 if (status)
5995 goto out;
5996 status = decode_sequence(xdr, &res->seq_res, rqstp);
5997 if (status)
5998 goto out;
5999 status = decode_putfh(xdr);
6000 if (status != 0)
6001 goto out;
6002 status = decode_access(xdr, &res->supported, &res->access);
6003 if (status != 0)
6004 goto out;
6005 decode_getfattr(xdr, res->fattr, res->server);
6006 out:
6007 return status;
6008 }
6009
6010 /*
6011 * Decode LOOKUP response
6012 */
6013 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6014 struct nfs4_lookup_res *res)
6015 {
6016 struct compound_hdr hdr;
6017 int status;
6018
6019 status = decode_compound_hdr(xdr, &hdr);
6020 if (status)
6021 goto out;
6022 status = decode_sequence(xdr, &res->seq_res, rqstp);
6023 if (status)
6024 goto out;
6025 status = decode_putfh(xdr);
6026 if (status)
6027 goto out;
6028 status = decode_lookup(xdr);
6029 if (status)
6030 goto out;
6031 status = decode_getfh(xdr, res->fh);
6032 if (status)
6033 goto out;
6034 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6035 out:
6036 return status;
6037 }
6038
6039 /*
6040 * Decode LOOKUP_ROOT response
6041 */
6042 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6043 struct xdr_stream *xdr,
6044 struct nfs4_lookup_res *res)
6045 {
6046 struct compound_hdr hdr;
6047 int status;
6048
6049 status = decode_compound_hdr(xdr, &hdr);
6050 if (status)
6051 goto out;
6052 status = decode_sequence(xdr, &res->seq_res, rqstp);
6053 if (status)
6054 goto out;
6055 status = decode_putrootfh(xdr);
6056 if (status)
6057 goto out;
6058 status = decode_getfh(xdr, res->fh);
6059 if (status == 0)
6060 status = decode_getfattr_label(xdr, res->fattr,
6061 res->label, res->server);
6062 out:
6063 return status;
6064 }
6065
6066 /*
6067 * Decode REMOVE response
6068 */
6069 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6070 struct nfs_removeres *res)
6071 {
6072 struct compound_hdr hdr;
6073 int status;
6074
6075 status = decode_compound_hdr(xdr, &hdr);
6076 if (status)
6077 goto out;
6078 status = decode_sequence(xdr, &res->seq_res, rqstp);
6079 if (status)
6080 goto out;
6081 status = decode_putfh(xdr);
6082 if (status)
6083 goto out;
6084 status = decode_remove(xdr, &res->cinfo);
6085 out:
6086 return status;
6087 }
6088
6089 /*
6090 * Decode RENAME response
6091 */
6092 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6093 struct nfs_renameres *res)
6094 {
6095 struct compound_hdr hdr;
6096 int status;
6097
6098 status = decode_compound_hdr(xdr, &hdr);
6099 if (status)
6100 goto out;
6101 status = decode_sequence(xdr, &res->seq_res, rqstp);
6102 if (status)
6103 goto out;
6104 status = decode_putfh(xdr);
6105 if (status)
6106 goto out;
6107 status = decode_savefh(xdr);
6108 if (status)
6109 goto out;
6110 status = decode_putfh(xdr);
6111 if (status)
6112 goto out;
6113 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6114 out:
6115 return status;
6116 }
6117
6118 /*
6119 * Decode LINK response
6120 */
6121 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6122 struct nfs4_link_res *res)
6123 {
6124 struct compound_hdr hdr;
6125 int status;
6126
6127 status = decode_compound_hdr(xdr, &hdr);
6128 if (status)
6129 goto out;
6130 status = decode_sequence(xdr, &res->seq_res, rqstp);
6131 if (status)
6132 goto out;
6133 status = decode_putfh(xdr);
6134 if (status)
6135 goto out;
6136 status = decode_savefh(xdr);
6137 if (status)
6138 goto out;
6139 status = decode_putfh(xdr);
6140 if (status)
6141 goto out;
6142 status = decode_link(xdr, &res->cinfo);
6143 if (status)
6144 goto out;
6145 /*
6146 * Note order: OP_LINK leaves the directory as the current
6147 * filehandle.
6148 */
6149 status = decode_restorefh(xdr);
6150 if (status)
6151 goto out;
6152 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6153 out:
6154 return status;
6155 }
6156
6157 /*
6158 * Decode CREATE response
6159 */
6160 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6161 struct nfs4_create_res *res)
6162 {
6163 struct compound_hdr hdr;
6164 int status;
6165
6166 status = decode_compound_hdr(xdr, &hdr);
6167 if (status)
6168 goto out;
6169 status = decode_sequence(xdr, &res->seq_res, rqstp);
6170 if (status)
6171 goto out;
6172 status = decode_putfh(xdr);
6173 if (status)
6174 goto out;
6175 status = decode_create(xdr, &res->dir_cinfo);
6176 if (status)
6177 goto out;
6178 status = decode_getfh(xdr, res->fh);
6179 if (status)
6180 goto out;
6181 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6182 out:
6183 return status;
6184 }
6185
6186 /*
6187 * Decode SYMLINK response
6188 */
6189 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6190 struct nfs4_create_res *res)
6191 {
6192 return nfs4_xdr_dec_create(rqstp, xdr, res);
6193 }
6194
6195 /*
6196 * Decode GETATTR response
6197 */
6198 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6199 struct nfs4_getattr_res *res)
6200 {
6201 struct compound_hdr hdr;
6202 int status;
6203
6204 status = decode_compound_hdr(xdr, &hdr);
6205 if (status)
6206 goto out;
6207 status = decode_sequence(xdr, &res->seq_res, rqstp);
6208 if (status)
6209 goto out;
6210 status = decode_putfh(xdr);
6211 if (status)
6212 goto out;
6213 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6214 out:
6215 return status;
6216 }
6217
6218 /*
6219 * Encode an SETACL request
6220 */
6221 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6222 struct nfs_setaclargs *args)
6223 {
6224 struct compound_hdr hdr = {
6225 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6226 };
6227
6228 encode_compound_hdr(xdr, req, &hdr);
6229 encode_sequence(xdr, &args->seq_args, &hdr);
6230 encode_putfh(xdr, args->fh, &hdr);
6231 encode_setacl(xdr, args, &hdr);
6232 encode_nops(&hdr);
6233 }
6234
6235 /*
6236 * Decode SETACL response
6237 */
6238 static int
6239 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6240 struct nfs_setaclres *res)
6241 {
6242 struct compound_hdr hdr;
6243 int status;
6244
6245 status = decode_compound_hdr(xdr, &hdr);
6246 if (status)
6247 goto out;
6248 status = decode_sequence(xdr, &res->seq_res, rqstp);
6249 if (status)
6250 goto out;
6251 status = decode_putfh(xdr);
6252 if (status)
6253 goto out;
6254 status = decode_setattr(xdr);
6255 out:
6256 return status;
6257 }
6258
6259 /*
6260 * Decode GETACL response
6261 */
6262 static int
6263 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6264 struct nfs_getaclres *res)
6265 {
6266 struct compound_hdr hdr;
6267 int status;
6268
6269 if (res->acl_scratch != NULL) {
6270 void *p = page_address(res->acl_scratch);
6271 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
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_getacl(xdr, rqstp, res);
6283
6284 out:
6285 return status;
6286 }
6287
6288 /*
6289 * Decode CLOSE response
6290 */
6291 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6292 struct nfs_closeres *res)
6293 {
6294 struct compound_hdr hdr;
6295 int status;
6296
6297 status = decode_compound_hdr(xdr, &hdr);
6298 if (status)
6299 goto out;
6300 status = decode_sequence(xdr, &res->seq_res, rqstp);
6301 if (status)
6302 goto out;
6303 status = decode_putfh(xdr);
6304 if (status)
6305 goto out;
6306 status = decode_close(xdr, res);
6307 if (status != 0)
6308 goto out;
6309 /*
6310 * Note: Server may do delete on close for this file
6311 * in which case the getattr call will fail with
6312 * an ESTALE error. Shouldn't be a problem,
6313 * though, since fattr->valid will remain unset.
6314 */
6315 decode_getfattr(xdr, res->fattr, res->server);
6316 out:
6317 return status;
6318 }
6319
6320 /*
6321 * Decode OPEN response
6322 */
6323 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6324 struct nfs_openres *res)
6325 {
6326 struct compound_hdr hdr;
6327 int status;
6328
6329 status = decode_compound_hdr(xdr, &hdr);
6330 if (status)
6331 goto out;
6332 status = decode_sequence(xdr, &res->seq_res, rqstp);
6333 if (status)
6334 goto out;
6335 status = decode_putfh(xdr);
6336 if (status)
6337 goto out;
6338 status = decode_open(xdr, res);
6339 if (status)
6340 goto out;
6341 status = decode_getfh(xdr, &res->fh);
6342 if (status)
6343 goto out;
6344 if (res->access_request)
6345 decode_access(xdr, &res->access_supported, &res->access_result);
6346 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6347 out:
6348 return status;
6349 }
6350
6351 /*
6352 * Decode OPEN_CONFIRM response
6353 */
6354 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6355 struct xdr_stream *xdr,
6356 struct nfs_open_confirmres *res)
6357 {
6358 struct compound_hdr hdr;
6359 int status;
6360
6361 status = decode_compound_hdr(xdr, &hdr);
6362 if (status)
6363 goto out;
6364 status = decode_putfh(xdr);
6365 if (status)
6366 goto out;
6367 status = decode_open_confirm(xdr, res);
6368 out:
6369 return status;
6370 }
6371
6372 /*
6373 * Decode OPEN response
6374 */
6375 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6376 struct xdr_stream *xdr,
6377 struct nfs_openres *res)
6378 {
6379 struct compound_hdr hdr;
6380 int status;
6381
6382 status = decode_compound_hdr(xdr, &hdr);
6383 if (status)
6384 goto out;
6385 status = decode_sequence(xdr, &res->seq_res, rqstp);
6386 if (status)
6387 goto out;
6388 status = decode_putfh(xdr);
6389 if (status)
6390 goto out;
6391 status = decode_open(xdr, res);
6392 if (status)
6393 goto out;
6394 if (res->access_request)
6395 decode_access(xdr, &res->access_supported, &res->access_result);
6396 decode_getfattr(xdr, res->f_attr, res->server);
6397 out:
6398 return status;
6399 }
6400
6401 /*
6402 * Decode SETATTR response
6403 */
6404 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6405 struct xdr_stream *xdr,
6406 struct nfs_setattrres *res)
6407 {
6408 struct compound_hdr hdr;
6409 int status;
6410
6411 status = decode_compound_hdr(xdr, &hdr);
6412 if (status)
6413 goto out;
6414 status = decode_sequence(xdr, &res->seq_res, rqstp);
6415 if (status)
6416 goto out;
6417 status = decode_putfh(xdr);
6418 if (status)
6419 goto out;
6420 status = decode_setattr(xdr);
6421 if (status)
6422 goto out;
6423 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6424 out:
6425 return status;
6426 }
6427
6428 /*
6429 * Decode LOCK response
6430 */
6431 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6432 struct nfs_lock_res *res)
6433 {
6434 struct compound_hdr hdr;
6435 int status;
6436
6437 status = decode_compound_hdr(xdr, &hdr);
6438 if (status)
6439 goto out;
6440 status = decode_sequence(xdr, &res->seq_res, rqstp);
6441 if (status)
6442 goto out;
6443 status = decode_putfh(xdr);
6444 if (status)
6445 goto out;
6446 status = decode_lock(xdr, res);
6447 out:
6448 return status;
6449 }
6450
6451 /*
6452 * Decode LOCKT response
6453 */
6454 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6455 struct nfs_lockt_res *res)
6456 {
6457 struct compound_hdr hdr;
6458 int status;
6459
6460 status = decode_compound_hdr(xdr, &hdr);
6461 if (status)
6462 goto out;
6463 status = decode_sequence(xdr, &res->seq_res, rqstp);
6464 if (status)
6465 goto out;
6466 status = decode_putfh(xdr);
6467 if (status)
6468 goto out;
6469 status = decode_lockt(xdr, res);
6470 out:
6471 return status;
6472 }
6473
6474 /*
6475 * Decode LOCKU response
6476 */
6477 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6478 struct nfs_locku_res *res)
6479 {
6480 struct compound_hdr hdr;
6481 int status;
6482
6483 status = decode_compound_hdr(xdr, &hdr);
6484 if (status)
6485 goto out;
6486 status = decode_sequence(xdr, &res->seq_res, rqstp);
6487 if (status)
6488 goto out;
6489 status = decode_putfh(xdr);
6490 if (status)
6491 goto out;
6492 status = decode_locku(xdr, res);
6493 out:
6494 return status;
6495 }
6496
6497 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6498 struct xdr_stream *xdr, void *dummy)
6499 {
6500 struct compound_hdr hdr;
6501 int status;
6502
6503 status = decode_compound_hdr(xdr, &hdr);
6504 if (!status)
6505 status = decode_release_lockowner(xdr);
6506 return status;
6507 }
6508
6509 /*
6510 * Decode READLINK response
6511 */
6512 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6513 struct xdr_stream *xdr,
6514 struct nfs4_readlink_res *res)
6515 {
6516 struct compound_hdr hdr;
6517 int status;
6518
6519 status = decode_compound_hdr(xdr, &hdr);
6520 if (status)
6521 goto out;
6522 status = decode_sequence(xdr, &res->seq_res, rqstp);
6523 if (status)
6524 goto out;
6525 status = decode_putfh(xdr);
6526 if (status)
6527 goto out;
6528 status = decode_readlink(xdr, rqstp);
6529 out:
6530 return status;
6531 }
6532
6533 /*
6534 * Decode READDIR response
6535 */
6536 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6537 struct nfs4_readdir_res *res)
6538 {
6539 struct compound_hdr hdr;
6540 int status;
6541
6542 status = decode_compound_hdr(xdr, &hdr);
6543 if (status)
6544 goto out;
6545 status = decode_sequence(xdr, &res->seq_res, rqstp);
6546 if (status)
6547 goto out;
6548 status = decode_putfh(xdr);
6549 if (status)
6550 goto out;
6551 status = decode_readdir(xdr, rqstp, res);
6552 out:
6553 return status;
6554 }
6555
6556 /*
6557 * Decode Read response
6558 */
6559 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6560 struct nfs_readres *res)
6561 {
6562 struct compound_hdr hdr;
6563 int status;
6564
6565 status = decode_compound_hdr(xdr, &hdr);
6566 if (status)
6567 goto out;
6568 status = decode_sequence(xdr, &res->seq_res, rqstp);
6569 if (status)
6570 goto out;
6571 status = decode_putfh(xdr);
6572 if (status)
6573 goto out;
6574 status = decode_read(xdr, rqstp, res);
6575 if (!status)
6576 status = res->count;
6577 out:
6578 return status;
6579 }
6580
6581 /*
6582 * Decode WRITE response
6583 */
6584 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6585 struct nfs_writeres *res)
6586 {
6587 struct compound_hdr hdr;
6588 int status;
6589
6590 status = decode_compound_hdr(xdr, &hdr);
6591 if (status)
6592 goto out;
6593 status = decode_sequence(xdr, &res->seq_res, rqstp);
6594 if (status)
6595 goto out;
6596 status = decode_putfh(xdr);
6597 if (status)
6598 goto out;
6599 status = decode_write(xdr, res);
6600 if (status)
6601 goto out;
6602 if (res->fattr)
6603 decode_getfattr(xdr, res->fattr, res->server);
6604 if (!status)
6605 status = res->count;
6606 out:
6607 return status;
6608 }
6609
6610 /*
6611 * Decode COMMIT response
6612 */
6613 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6614 struct nfs_commitres *res)
6615 {
6616 struct compound_hdr hdr;
6617 int status;
6618
6619 status = decode_compound_hdr(xdr, &hdr);
6620 if (status)
6621 goto out;
6622 status = decode_sequence(xdr, &res->seq_res, rqstp);
6623 if (status)
6624 goto out;
6625 status = decode_putfh(xdr);
6626 if (status)
6627 goto out;
6628 status = decode_commit(xdr, res);
6629 out:
6630 return status;
6631 }
6632
6633 /*
6634 * Decode FSINFO response
6635 */
6636 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6637 struct nfs4_fsinfo_res *res)
6638 {
6639 struct compound_hdr hdr;
6640 int status;
6641
6642 status = decode_compound_hdr(xdr, &hdr);
6643 if (!status)
6644 status = decode_sequence(xdr, &res->seq_res, req);
6645 if (!status)
6646 status = decode_putfh(xdr);
6647 if (!status)
6648 status = decode_fsinfo(xdr, res->fsinfo);
6649 return status;
6650 }
6651
6652 /*
6653 * Decode PATHCONF response
6654 */
6655 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6656 struct nfs4_pathconf_res *res)
6657 {
6658 struct compound_hdr hdr;
6659 int status;
6660
6661 status = decode_compound_hdr(xdr, &hdr);
6662 if (!status)
6663 status = decode_sequence(xdr, &res->seq_res, req);
6664 if (!status)
6665 status = decode_putfh(xdr);
6666 if (!status)
6667 status = decode_pathconf(xdr, res->pathconf);
6668 return status;
6669 }
6670
6671 /*
6672 * Decode STATFS response
6673 */
6674 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6675 struct nfs4_statfs_res *res)
6676 {
6677 struct compound_hdr hdr;
6678 int status;
6679
6680 status = decode_compound_hdr(xdr, &hdr);
6681 if (!status)
6682 status = decode_sequence(xdr, &res->seq_res, req);
6683 if (!status)
6684 status = decode_putfh(xdr);
6685 if (!status)
6686 status = decode_statfs(xdr, res->fsstat);
6687 return status;
6688 }
6689
6690 /*
6691 * Decode GETATTR_BITMAP response
6692 */
6693 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6694 struct xdr_stream *xdr,
6695 struct nfs4_server_caps_res *res)
6696 {
6697 struct compound_hdr hdr;
6698 int status;
6699
6700 status = decode_compound_hdr(xdr, &hdr);
6701 if (status)
6702 goto out;
6703 status = decode_sequence(xdr, &res->seq_res, req);
6704 if (status)
6705 goto out;
6706 status = decode_putfh(xdr);
6707 if (status)
6708 goto out;
6709 status = decode_server_caps(xdr, res);
6710 out:
6711 return status;
6712 }
6713
6714 /*
6715 * Decode RENEW response
6716 */
6717 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6718 void *__unused)
6719 {
6720 struct compound_hdr hdr;
6721 int status;
6722
6723 status = decode_compound_hdr(xdr, &hdr);
6724 if (!status)
6725 status = decode_renew(xdr);
6726 return status;
6727 }
6728
6729 /*
6730 * Decode SETCLIENTID response
6731 */
6732 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6733 struct xdr_stream *xdr,
6734 struct nfs4_setclientid_res *res)
6735 {
6736 struct compound_hdr hdr;
6737 int status;
6738
6739 status = decode_compound_hdr(xdr, &hdr);
6740 if (!status)
6741 status = decode_setclientid(xdr, res);
6742 return status;
6743 }
6744
6745 /*
6746 * Decode SETCLIENTID_CONFIRM response
6747 */
6748 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6749 struct xdr_stream *xdr)
6750 {
6751 struct compound_hdr hdr;
6752 int status;
6753
6754 status = decode_compound_hdr(xdr, &hdr);
6755 if (!status)
6756 status = decode_setclientid_confirm(xdr);
6757 return status;
6758 }
6759
6760 /*
6761 * Decode DELEGRETURN response
6762 */
6763 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6764 struct xdr_stream *xdr,
6765 struct nfs4_delegreturnres *res)
6766 {
6767 struct compound_hdr hdr;
6768 int status;
6769
6770 status = decode_compound_hdr(xdr, &hdr);
6771 if (status)
6772 goto out;
6773 status = decode_sequence(xdr, &res->seq_res, rqstp);
6774 if (status)
6775 goto out;
6776 status = decode_putfh(xdr);
6777 if (status != 0)
6778 goto out;
6779 status = decode_getfattr(xdr, res->fattr, res->server);
6780 if (status != 0)
6781 goto out;
6782 status = decode_delegreturn(xdr);
6783 out:
6784 return status;
6785 }
6786
6787 /*
6788 * Decode FS_LOCATIONS response
6789 */
6790 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6791 struct xdr_stream *xdr,
6792 struct nfs4_fs_locations_res *res)
6793 {
6794 struct compound_hdr hdr;
6795 int status;
6796
6797 status = decode_compound_hdr(xdr, &hdr);
6798 if (status)
6799 goto out;
6800 status = decode_sequence(xdr, &res->seq_res, req);
6801 if (status)
6802 goto out;
6803 status = decode_putfh(xdr);
6804 if (status)
6805 goto out;
6806 status = decode_lookup(xdr);
6807 if (status)
6808 goto out;
6809 xdr_enter_page(xdr, PAGE_SIZE);
6810 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6811 NULL, res->fs_locations,
6812 NULL, res->fs_locations->server);
6813 out:
6814 return status;
6815 }
6816
6817 /*
6818 * Decode SECINFO response
6819 */
6820 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6821 struct xdr_stream *xdr,
6822 struct nfs4_secinfo_res *res)
6823 {
6824 struct compound_hdr hdr;
6825 int status;
6826
6827 status = decode_compound_hdr(xdr, &hdr);
6828 if (status)
6829 goto out;
6830 status = decode_sequence(xdr, &res->seq_res, rqstp);
6831 if (status)
6832 goto out;
6833 status = decode_putfh(xdr);
6834 if (status)
6835 goto out;
6836 status = decode_secinfo(xdr, res);
6837 out:
6838 return status;
6839 }
6840
6841 #if defined(CONFIG_NFS_V4_1)
6842 /*
6843 * Decode BIND_CONN_TO_SESSION response
6844 */
6845 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6846 struct xdr_stream *xdr,
6847 void *res)
6848 {
6849 struct compound_hdr hdr;
6850 int status;
6851
6852 status = decode_compound_hdr(xdr, &hdr);
6853 if (!status)
6854 status = decode_bind_conn_to_session(xdr, res);
6855 return status;
6856 }
6857
6858 /*
6859 * Decode EXCHANGE_ID response
6860 */
6861 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6862 struct xdr_stream *xdr,
6863 void *res)
6864 {
6865 struct compound_hdr hdr;
6866 int status;
6867
6868 status = decode_compound_hdr(xdr, &hdr);
6869 if (!status)
6870 status = decode_exchange_id(xdr, res);
6871 return status;
6872 }
6873
6874 /*
6875 * Decode CREATE_SESSION response
6876 */
6877 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6878 struct xdr_stream *xdr,
6879 struct nfs41_create_session_res *res)
6880 {
6881 struct compound_hdr hdr;
6882 int status;
6883
6884 status = decode_compound_hdr(xdr, &hdr);
6885 if (!status)
6886 status = decode_create_session(xdr, res);
6887 return status;
6888 }
6889
6890 /*
6891 * Decode DESTROY_SESSION response
6892 */
6893 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6894 struct xdr_stream *xdr,
6895 void *res)
6896 {
6897 struct compound_hdr hdr;
6898 int status;
6899
6900 status = decode_compound_hdr(xdr, &hdr);
6901 if (!status)
6902 status = decode_destroy_session(xdr, res);
6903 return status;
6904 }
6905
6906 /*
6907 * Decode DESTROY_CLIENTID response
6908 */
6909 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6910 struct xdr_stream *xdr,
6911 void *res)
6912 {
6913 struct compound_hdr hdr;
6914 int status;
6915
6916 status = decode_compound_hdr(xdr, &hdr);
6917 if (!status)
6918 status = decode_destroy_clientid(xdr, res);
6919 return status;
6920 }
6921
6922 /*
6923 * Decode SEQUENCE response
6924 */
6925 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6926 struct xdr_stream *xdr,
6927 struct nfs4_sequence_res *res)
6928 {
6929 struct compound_hdr hdr;
6930 int status;
6931
6932 status = decode_compound_hdr(xdr, &hdr);
6933 if (!status)
6934 status = decode_sequence(xdr, res, rqstp);
6935 return status;
6936 }
6937
6938 /*
6939 * Decode GET_LEASE_TIME response
6940 */
6941 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6942 struct xdr_stream *xdr,
6943 struct nfs4_get_lease_time_res *res)
6944 {
6945 struct compound_hdr hdr;
6946 int status;
6947
6948 status = decode_compound_hdr(xdr, &hdr);
6949 if (!status)
6950 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6951 if (!status)
6952 status = decode_putrootfh(xdr);
6953 if (!status)
6954 status = decode_fsinfo(xdr, res->lr_fsinfo);
6955 return status;
6956 }
6957
6958 /*
6959 * Decode RECLAIM_COMPLETE response
6960 */
6961 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6962 struct xdr_stream *xdr,
6963 struct nfs41_reclaim_complete_res *res)
6964 {
6965 struct compound_hdr hdr;
6966 int status;
6967
6968 status = decode_compound_hdr(xdr, &hdr);
6969 if (!status)
6970 status = decode_sequence(xdr, &res->seq_res, rqstp);
6971 if (!status)
6972 status = decode_reclaim_complete(xdr, (void *)NULL);
6973 return status;
6974 }
6975
6976 /*
6977 * Decode GETDEVICELIST response
6978 */
6979 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6980 struct xdr_stream *xdr,
6981 struct nfs4_getdevicelist_res *res)
6982 {
6983 struct compound_hdr hdr;
6984 int status;
6985
6986 dprintk("encoding getdevicelist!\n");
6987
6988 status = decode_compound_hdr(xdr, &hdr);
6989 if (status != 0)
6990 goto out;
6991 status = decode_sequence(xdr, &res->seq_res, rqstp);
6992 if (status != 0)
6993 goto out;
6994 status = decode_putfh(xdr);
6995 if (status != 0)
6996 goto out;
6997 status = decode_getdevicelist(xdr, res->devlist);
6998 out:
6999 return status;
7000 }
7001
7002 /*
7003 * Decode GETDEVINFO response
7004 */
7005 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7006 struct xdr_stream *xdr,
7007 struct nfs4_getdeviceinfo_res *res)
7008 {
7009 struct compound_hdr hdr;
7010 int status;
7011
7012 status = decode_compound_hdr(xdr, &hdr);
7013 if (status != 0)
7014 goto out;
7015 status = decode_sequence(xdr, &res->seq_res, rqstp);
7016 if (status != 0)
7017 goto out;
7018 status = decode_getdeviceinfo(xdr, res->pdev);
7019 out:
7020 return status;
7021 }
7022
7023 /*
7024 * Decode LAYOUTGET response
7025 */
7026 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7027 struct xdr_stream *xdr,
7028 struct nfs4_layoutget_res *res)
7029 {
7030 struct compound_hdr hdr;
7031 int status;
7032
7033 status = decode_compound_hdr(xdr, &hdr);
7034 if (status)
7035 goto out;
7036 status = decode_sequence(xdr, &res->seq_res, rqstp);
7037 if (status)
7038 goto out;
7039 status = decode_putfh(xdr);
7040 if (status)
7041 goto out;
7042 status = decode_layoutget(xdr, rqstp, res);
7043 out:
7044 return status;
7045 }
7046
7047 /*
7048 * Decode LAYOUTRETURN response
7049 */
7050 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7051 struct xdr_stream *xdr,
7052 struct nfs4_layoutreturn_res *res)
7053 {
7054 struct compound_hdr hdr;
7055 int status;
7056
7057 status = decode_compound_hdr(xdr, &hdr);
7058 if (status)
7059 goto out;
7060 status = decode_sequence(xdr, &res->seq_res, rqstp);
7061 if (status)
7062 goto out;
7063 status = decode_putfh(xdr);
7064 if (status)
7065 goto out;
7066 status = decode_layoutreturn(xdr, res);
7067 out:
7068 return status;
7069 }
7070
7071 /*
7072 * Decode LAYOUTCOMMIT response
7073 */
7074 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7075 struct xdr_stream *xdr,
7076 struct nfs4_layoutcommit_res *res)
7077 {
7078 struct compound_hdr hdr;
7079 int status;
7080
7081 status = decode_compound_hdr(xdr, &hdr);
7082 if (status)
7083 goto out;
7084 status = decode_sequence(xdr, &res->seq_res, rqstp);
7085 if (status)
7086 goto out;
7087 status = decode_putfh(xdr);
7088 if (status)
7089 goto out;
7090 status = decode_layoutcommit(xdr, rqstp, res);
7091 if (status)
7092 goto out;
7093 decode_getfattr(xdr, res->fattr, res->server);
7094 out:
7095 return status;
7096 }
7097
7098 /*
7099 * Decode SECINFO_NO_NAME response
7100 */
7101 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7102 struct xdr_stream *xdr,
7103 struct nfs4_secinfo_res *res)
7104 {
7105 struct compound_hdr hdr;
7106 int status;
7107
7108 status = decode_compound_hdr(xdr, &hdr);
7109 if (status)
7110 goto out;
7111 status = decode_sequence(xdr, &res->seq_res, rqstp);
7112 if (status)
7113 goto out;
7114 status = decode_putrootfh(xdr);
7115 if (status)
7116 goto out;
7117 status = decode_secinfo_no_name(xdr, res);
7118 out:
7119 return status;
7120 }
7121
7122 /*
7123 * Decode TEST_STATEID response
7124 */
7125 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7126 struct xdr_stream *xdr,
7127 struct nfs41_test_stateid_res *res)
7128 {
7129 struct compound_hdr hdr;
7130 int status;
7131
7132 status = decode_compound_hdr(xdr, &hdr);
7133 if (status)
7134 goto out;
7135 status = decode_sequence(xdr, &res->seq_res, rqstp);
7136 if (status)
7137 goto out;
7138 status = decode_test_stateid(xdr, res);
7139 out:
7140 return status;
7141 }
7142
7143 /*
7144 * Decode FREE_STATEID response
7145 */
7146 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7147 struct xdr_stream *xdr,
7148 struct nfs41_free_stateid_res *res)
7149 {
7150 struct compound_hdr hdr;
7151 int status;
7152
7153 status = decode_compound_hdr(xdr, &hdr);
7154 if (status)
7155 goto out;
7156 status = decode_sequence(xdr, &res->seq_res, rqstp);
7157 if (status)
7158 goto out;
7159 status = decode_free_stateid(xdr, res);
7160 out:
7161 return status;
7162 }
7163 #endif /* CONFIG_NFS_V4_1 */
7164
7165 /**
7166 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7167 * the local page cache.
7168 * @xdr: XDR stream where entry resides
7169 * @entry: buffer to fill in with entry data
7170 * @plus: boolean indicating whether this should be a readdirplus entry
7171 *
7172 * Returns zero if successful, otherwise a negative errno value is
7173 * returned.
7174 *
7175 * This function is not invoked during READDIR reply decoding, but
7176 * rather whenever an application invokes the getdents(2) system call
7177 * on a directory already in our cache.
7178 */
7179 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7180 int plus)
7181 {
7182 unsigned int savep;
7183 uint32_t bitmap[3] = {0};
7184 uint32_t len;
7185 __be32 *p = xdr_inline_decode(xdr, 4);
7186 if (unlikely(!p))
7187 goto out_overflow;
7188 if (*p == xdr_zero) {
7189 p = xdr_inline_decode(xdr, 4);
7190 if (unlikely(!p))
7191 goto out_overflow;
7192 if (*p == xdr_zero)
7193 return -EAGAIN;
7194 entry->eof = 1;
7195 return -EBADCOOKIE;
7196 }
7197
7198 p = xdr_inline_decode(xdr, 12);
7199 if (unlikely(!p))
7200 goto out_overflow;
7201 entry->prev_cookie = entry->cookie;
7202 p = xdr_decode_hyper(p, &entry->cookie);
7203 entry->len = be32_to_cpup(p);
7204
7205 p = xdr_inline_decode(xdr, entry->len);
7206 if (unlikely(!p))
7207 goto out_overflow;
7208 entry->name = (const char *) p;
7209
7210 /*
7211 * In case the server doesn't return an inode number,
7212 * we fake one here. (We don't use inode number 0,
7213 * since glibc seems to choke on it...)
7214 */
7215 entry->ino = 1;
7216 entry->fattr->valid = 0;
7217
7218 if (decode_attr_bitmap(xdr, bitmap) < 0)
7219 goto out_overflow;
7220
7221 if (decode_attr_length(xdr, &len, &savep) < 0)
7222 goto out_overflow;
7223
7224 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7225 NULL, entry->label, entry->server) < 0)
7226 goto out_overflow;
7227 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7228 entry->ino = entry->fattr->mounted_on_fileid;
7229 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7230 entry->ino = entry->fattr->fileid;
7231
7232 entry->d_type = DT_UNKNOWN;
7233 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7234 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7235
7236 return 0;
7237
7238 out_overflow:
7239 print_overflow_msg(__func__, xdr);
7240 return -EAGAIN;
7241 }
7242
7243 /*
7244 * We need to translate between nfs status return values and
7245 * the local errno values which may not be the same.
7246 */
7247 static struct {
7248 int stat;
7249 int errno;
7250 } nfs_errtbl[] = {
7251 { NFS4_OK, 0 },
7252 { NFS4ERR_PERM, -EPERM },
7253 { NFS4ERR_NOENT, -ENOENT },
7254 { NFS4ERR_IO, -errno_NFSERR_IO},
7255 { NFS4ERR_NXIO, -ENXIO },
7256 { NFS4ERR_ACCESS, -EACCES },
7257 { NFS4ERR_EXIST, -EEXIST },
7258 { NFS4ERR_XDEV, -EXDEV },
7259 { NFS4ERR_NOTDIR, -ENOTDIR },
7260 { NFS4ERR_ISDIR, -EISDIR },
7261 { NFS4ERR_INVAL, -EINVAL },
7262 { NFS4ERR_FBIG, -EFBIG },
7263 { NFS4ERR_NOSPC, -ENOSPC },
7264 { NFS4ERR_ROFS, -EROFS },
7265 { NFS4ERR_MLINK, -EMLINK },
7266 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7267 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7268 { NFS4ERR_DQUOT, -EDQUOT },
7269 { NFS4ERR_STALE, -ESTALE },
7270 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7271 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7272 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7273 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7274 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7275 { NFS4ERR_BADTYPE, -EBADTYPE },
7276 { NFS4ERR_LOCKED, -EAGAIN },
7277 { NFS4ERR_SYMLINK, -ELOOP },
7278 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7279 { NFS4ERR_DEADLOCK, -EDEADLK },
7280 { -1, -EIO }
7281 };
7282
7283 /*
7284 * Convert an NFS error code to a local one.
7285 * This one is used jointly by NFSv2 and NFSv3.
7286 */
7287 static int
7288 nfs4_stat_to_errno(int stat)
7289 {
7290 int i;
7291 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7292 if (nfs_errtbl[i].stat == stat)
7293 return nfs_errtbl[i].errno;
7294 }
7295 if (stat <= 10000 || stat > 10100) {
7296 /* The server is looney tunes. */
7297 return -EREMOTEIO;
7298 }
7299 /* If we cannot translate the error, the recovery routines should
7300 * handle it.
7301 * Note: remaining NFSv4 error codes have values > 10000, so should
7302 * not conflict with native Linux error codes.
7303 */
7304 return -stat;
7305 }
7306
7307 #define PROC(proc, argtype, restype) \
7308 [NFSPROC4_CLNT_##proc] = { \
7309 .p_proc = NFSPROC4_COMPOUND, \
7310 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7311 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7312 .p_arglen = NFS4_##argtype##_sz, \
7313 .p_replen = NFS4_##restype##_sz, \
7314 .p_statidx = NFSPROC4_CLNT_##proc, \
7315 .p_name = #proc, \
7316 }
7317
7318 struct rpc_procinfo nfs4_procedures[] = {
7319 PROC(READ, enc_read, dec_read),
7320 PROC(WRITE, enc_write, dec_write),
7321 PROC(COMMIT, enc_commit, dec_commit),
7322 PROC(OPEN, enc_open, dec_open),
7323 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7324 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7325 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7326 PROC(CLOSE, enc_close, dec_close),
7327 PROC(SETATTR, enc_setattr, dec_setattr),
7328 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7329 PROC(RENEW, enc_renew, dec_renew),
7330 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7331 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7332 PROC(LOCK, enc_lock, dec_lock),
7333 PROC(LOCKT, enc_lockt, dec_lockt),
7334 PROC(LOCKU, enc_locku, dec_locku),
7335 PROC(ACCESS, enc_access, dec_access),
7336 PROC(GETATTR, enc_getattr, dec_getattr),
7337 PROC(LOOKUP, enc_lookup, dec_lookup),
7338 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7339 PROC(REMOVE, enc_remove, dec_remove),
7340 PROC(RENAME, enc_rename, dec_rename),
7341 PROC(LINK, enc_link, dec_link),
7342 PROC(SYMLINK, enc_symlink, dec_symlink),
7343 PROC(CREATE, enc_create, dec_create),
7344 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7345 PROC(STATFS, enc_statfs, dec_statfs),
7346 PROC(READLINK, enc_readlink, dec_readlink),
7347 PROC(READDIR, enc_readdir, dec_readdir),
7348 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7349 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7350 PROC(GETACL, enc_getacl, dec_getacl),
7351 PROC(SETACL, enc_setacl, dec_setacl),
7352 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7353 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7354 PROC(SECINFO, enc_secinfo, dec_secinfo),
7355 #if defined(CONFIG_NFS_V4_1)
7356 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7357 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7358 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7359 PROC(SEQUENCE, enc_sequence, dec_sequence),
7360 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7361 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7362 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7363 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7364 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7365 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7366 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7367 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7368 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7369 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7370 PROC(BIND_CONN_TO_SESSION,
7371 enc_bind_conn_to_session, dec_bind_conn_to_session),
7372 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7373 #endif /* CONFIG_NFS_V4_1 */
7374 };
7375
7376 const struct rpc_version nfs_version4 = {
7377 .number = 4,
7378 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7379 .procs = nfs4_procedures
7380 };
7381
7382 /*
7383 * Local variables:
7384 * c-basic-offset: 8
7385 * End:
7386 */
Linux kernel - Deliverables
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