1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/in.h>
44 #include <linux/pagemap.h>
45 #include <linux/proc_fs.h>
46 #include <linux/kdev_t.h>
47 #include <linux/module.h>
48 #include <linux/utsname.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/sunrpc/msg_prot.h>
51 #include <linux/sunrpc/gss_api.h>
52 #include <linux/nfs.h>
53 #include <linux/nfs4.h>
54 #include <linux/nfs_fs.h>
55
56 #include "nfs4_fs.h"
57 #include "nfs4trace.h"
58 #include "internal.h"
59 #include "nfs4idmap.h"
60 #include "nfs4session.h"
61 #include "pnfs.h"
62 #include "netns.h"
63
64 #define NFSDBG_FACILITY NFSDBG_XDR
65
66 /* Mapping from NFS error code to "errno" error code. */
67 #define errno_NFSERR_IO EIO
68
69 struct compound_hdr;
70 static int nfs4_stat_to_errno(int);
71 static void encode_layoutget(struct xdr_stream *xdr,
72 const struct nfs4_layoutget_args *args,
73 struct compound_hdr *hdr);
74 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
75 struct nfs4_layoutget_res *res);
76
77 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
78 #ifdef DEBUG
79 #define NFS4_MAXTAGLEN 20
80 #else
81 #define NFS4_MAXTAGLEN 0
82 #endif
83
84 /* lock,open owner id:
85 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
86 */
87 #define pagepad_maxsz (1)
88 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
89 #define lock_owner_id_maxsz (1 + 1 + 4)
90 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
91 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
92 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
93 #define op_encode_hdr_maxsz (1)
94 #define op_decode_hdr_maxsz (2)
95 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
96 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
97 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
98 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
99 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
100 (NFS4_FHSIZE >> 2))
101 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
102 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
103 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
104 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
105 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
106 ((3+NFS4_FHSIZE) >> 2))
107 #define nfs4_fattr_bitmap_maxsz 4
108 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
109 #define nfstime4_maxsz (3)
110 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
111 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
112 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
113 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
114 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
115 /* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
116 #define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
117 #else
118 #define nfs4_label_maxsz 0
119 #endif
120 /* We support only one layout type per file system */
121 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
122 /* This is based on getfattr, which uses the most attributes: */
123 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
124 3*nfstime4_maxsz + \
125 nfs4_owner_maxsz + \
126 nfs4_group_maxsz + nfs4_label_maxsz + \
127 decode_mdsthreshold_maxsz))
128 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
129 nfs4_fattr_value_maxsz)
130 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
131 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
132 1 + 2 + 1 + \
133 nfs4_owner_maxsz + \
134 nfs4_group_maxsz + \
135 nfs4_label_maxsz + \
136 1 + nfstime4_maxsz + \
137 1 + nfstime4_maxsz)
138 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
139 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
140 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
141 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
142 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
143 /* The 5 accounts for the PNFS attributes, and assumes that at most three
144 * layout types will be returned.
145 */
146 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
147 nfs4_fattr_bitmap_maxsz + 1 + \
148 1 /* lease time */ + \
149 2 /* max filesize */ + \
150 2 /* max read */ + \
151 2 /* max write */ + \
152 nfstime4_maxsz /* time delta */ + \
153 5 /* fs layout types */ + \
154 1 /* layout blksize */ + \
155 1 /* clone blksize */ + \
156 1 /* change attr type */ + \
157 1 /* xattr support */)
158 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
159 #define decode_renew_maxsz (op_decode_hdr_maxsz)
160 #define encode_setclientid_maxsz \
161 (op_encode_hdr_maxsz + \
162 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
163 /* client name */ \
164 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
165 1 /* sc_prog */ + \
166 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
167 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
168 1) /* sc_cb_ident */
169 #define decode_setclientid_maxsz \
170 (op_decode_hdr_maxsz + \
171 2 /* clientid */ + \
172 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
173 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
174 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
175 #define encode_setclientid_confirm_maxsz \
176 (op_encode_hdr_maxsz + \
177 3 + (NFS4_VERIFIER_SIZE >> 2))
178 #define decode_setclientid_confirm_maxsz \
179 (op_decode_hdr_maxsz)
180 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
181 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
182 #define encode_lookupp_maxsz (op_encode_hdr_maxsz)
183 #define decode_lookupp_maxsz (op_decode_hdr_maxsz)
184 #define encode_share_access_maxsz \
185 (2)
186 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
187 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
188 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
189 #define encode_open_maxsz (op_encode_hdr_maxsz + \
190 2 + encode_share_access_maxsz + 2 + \
191 open_owner_id_maxsz + \
192 encode_opentype_maxsz + \
193 encode_claim_null_maxsz)
194 #define decode_space_limit_maxsz (3)
195 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
196 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
197 decode_space_limit_maxsz + \
198 decode_ace_maxsz)
199 #define decode_change_info_maxsz (5)
200 #define decode_open_maxsz (op_decode_hdr_maxsz + \
201 decode_stateid_maxsz + \
202 decode_change_info_maxsz + 1 + \
203 nfs4_fattr_bitmap_maxsz + \
204 decode_delegation_maxsz)
205 #define encode_open_confirm_maxsz \
206 (op_encode_hdr_maxsz + \
207 encode_stateid_maxsz + 1)
208 #define decode_open_confirm_maxsz \
209 (op_decode_hdr_maxsz + \
210 decode_stateid_maxsz)
211 #define encode_open_downgrade_maxsz \
212 (op_encode_hdr_maxsz + \
213 encode_stateid_maxsz + 1 + \
214 encode_share_access_maxsz)
215 #define decode_open_downgrade_maxsz \
216 (op_decode_hdr_maxsz + \
217 decode_stateid_maxsz)
218 #define encode_close_maxsz (op_encode_hdr_maxsz + \
219 1 + encode_stateid_maxsz)
220 #define decode_close_maxsz (op_decode_hdr_maxsz + \
221 decode_stateid_maxsz)
222 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
223 encode_stateid_maxsz + \
224 encode_attrs_maxsz)
225 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
226 nfs4_fattr_bitmap_maxsz)
227 #define encode_read_maxsz (op_encode_hdr_maxsz + \
228 encode_stateid_maxsz + 3)
229 #define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz)
230 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
231 2 + encode_verifier_maxsz + 5 + \
232 nfs4_label_maxsz)
233 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
234 decode_verifier_maxsz + pagepad_maxsz)
235 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
236 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz)
237 #define encode_write_maxsz (op_encode_hdr_maxsz + \
238 encode_stateid_maxsz + 4)
239 #define decode_write_maxsz (op_decode_hdr_maxsz + \
240 2 + decode_verifier_maxsz)
241 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
242 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
243 decode_verifier_maxsz)
244 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
245 nfs4_name_maxsz)
246 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
247 decode_change_info_maxsz)
248 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
249 2 * nfs4_name_maxsz)
250 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
251 decode_change_info_maxsz + \
252 decode_change_info_maxsz)
253 #define encode_link_maxsz (op_encode_hdr_maxsz + \
254 nfs4_name_maxsz)
255 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
256 #define encode_lockowner_maxsz (7)
257 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
258 7 + \
259 1 + encode_stateid_maxsz + 1 + \
260 encode_lockowner_maxsz)
261 #define decode_lock_denied_maxsz \
262 (8 + decode_lockowner_maxsz)
263 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
264 decode_lock_denied_maxsz)
265 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
266 encode_lockowner_maxsz)
267 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
268 decode_lock_denied_maxsz)
269 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
270 encode_stateid_maxsz + \
271 4)
272 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
273 decode_stateid_maxsz)
274 #define encode_release_lockowner_maxsz \
275 (op_encode_hdr_maxsz + \
276 encode_lockowner_maxsz)
277 #define decode_release_lockowner_maxsz \
278 (op_decode_hdr_maxsz)
279 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
280 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
281 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
282 1 + nfs4_name_maxsz + \
283 1 + \
284 nfs4_fattr_maxsz)
285 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
286 #define encode_create_maxsz (op_encode_hdr_maxsz + \
287 1 + 2 + nfs4_name_maxsz + \
288 encode_attrs_maxsz)
289 #define decode_create_maxsz (op_decode_hdr_maxsz + \
290 decode_change_info_maxsz + \
291 nfs4_fattr_bitmap_maxsz)
292 #define encode_statfs_maxsz (encode_getattr_maxsz)
293 #define decode_statfs_maxsz (decode_getattr_maxsz)
294 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
295 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
296 #define encode_getacl_maxsz (encode_getattr_maxsz)
297 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
298 nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz)
299 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
300 encode_stateid_maxsz + 3)
301 #define decode_setacl_maxsz (decode_setattr_maxsz)
302 #define encode_fs_locations_maxsz \
303 (encode_getattr_maxsz)
304 #define decode_fs_locations_maxsz \
305 (pagepad_maxsz)
306 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
307 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
308
309 #if defined(CONFIG_NFS_V4_1)
310 #define NFS4_MAX_MACHINE_NAME_LEN (64)
311 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
312 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
313
314 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
315 encode_verifier_maxsz + \
316 1 /* co_ownerid.len */ + \
317 /* eia_clientowner */ \
318 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
319 1 /* flags */ + \
320 1 /* spa_how */ + \
321 /* max is SP4_MACH_CRED (for now) */ + \
322 1 + NFS4_OP_MAP_NUM_WORDS + \
323 1 + NFS4_OP_MAP_NUM_WORDS + \
324 1 /* implementation id array of size 1 */ + \
325 1 /* nii_domain */ + \
326 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
327 1 /* nii_name */ + \
328 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
329 3 /* nii_date */)
330 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
331 2 /* eir_clientid */ + \
332 1 /* eir_sequenceid */ + \
333 1 /* eir_flags */ + \
334 1 /* spr_how */ + \
335 /* max is SP4_MACH_CRED (for now) */ + \
336 1 + NFS4_OP_MAP_NUM_WORDS + \
337 1 + NFS4_OP_MAP_NUM_WORDS + \
338 2 /* eir_server_owner.so_minor_id */ + \
339 /* eir_server_owner.so_major_id<> */ \
340 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
341 /* eir_server_scope<> */ \
342 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
343 1 /* eir_server_impl_id array length */ + \
344 1 /* nii_domain */ + \
345 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
346 1 /* nii_name */ + \
347 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
348 3 /* nii_date */)
349 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
350 #define decode_channel_attrs_maxsz (6 + \
351 1 /* ca_rdma_ird.len */ + \
352 1 /* ca_rdma_ird */)
353 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
354 2 /* csa_clientid */ + \
355 1 /* csa_sequence */ + \
356 1 /* csa_flags */ + \
357 encode_channel_attrs_maxsz + \
358 encode_channel_attrs_maxsz + \
359 1 /* csa_cb_program */ + \
360 1 /* csa_sec_parms.len (1) */ + \
361 1 /* cb_secflavor (AUTH_SYS) */ + \
362 1 /* stamp */ + \
363 1 /* machinename.len */ + \
364 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
365 1 /* uid */ + \
366 1 /* gid */ + \
367 1 /* gids.len (0) */)
368 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
369 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
370 1 /* csr_sequence */ + \
371 1 /* csr_flags */ + \
372 decode_channel_attrs_maxsz + \
373 decode_channel_attrs_maxsz)
374 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
375 /* bctsa_sessid */ \
376 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
377 1 /* bctsa_dir */ + \
378 1 /* bctsa_use_conn_in_rdma_mode */)
379 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
380 /* bctsr_sessid */ \
381 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
382 1 /* bctsr_dir */ + \
383 1 /* bctsr_use_conn_in_rdma_mode */)
384 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
385 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
386 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
387 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
388 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
389 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
390 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
392 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
393 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
394 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
395 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
396 1 /* layout type */ + \
397 1 /* maxcount */ + \
398 1 /* bitmap size */ + \
399 1 /* notification bitmap length */ + \
400 1 /* notification bitmap, word 0 */)
401 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
402 1 /* layout type */ + \
403 1 /* opaque devaddr4 length */ + \
404 /* devaddr4 payload is read into page */ \
405 1 /* notification bitmap length */ + \
406 1 /* notification bitmap, word 0 */ + \
407 pagepad_maxsz /* possible XDR padding */)
408 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
409 encode_stateid_maxsz)
410 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
411 decode_stateid_maxsz + \
412 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \
413 pagepad_maxsz)
414 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
415 2 /* offset */ + \
416 2 /* length */ + \
417 1 /* reclaim */ + \
418 encode_stateid_maxsz + \
419 1 /* new offset (true) */ + \
420 2 /* last byte written */ + \
421 1 /* nt_timechanged (false) */ + \
422 1 /* layoutupdate4 layout type */ + \
423 1 /* layoutupdate4 opaqueue len */)
424 /* the actual content of layoutupdate4 should
425 be allocated by drivers and spliced in
426 using xdr_write_pages */
427 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
428 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
429 encode_stateid_maxsz + \
430 1 + \
431 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
432 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
433 1 + decode_stateid_maxsz)
434 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
435 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
436 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
437 XDR_QUADLEN(NFS4_STATEID_SIZE))
438 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
439 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
440 XDR_QUADLEN(NFS4_STATEID_SIZE))
441 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
442 #else /* CONFIG_NFS_V4_1 */
443 #define encode_sequence_maxsz 0
444 #define decode_sequence_maxsz 0
445 #define encode_layoutreturn_maxsz 0
446 #define decode_layoutreturn_maxsz 0
447 #define encode_layoutget_maxsz 0
448 #define decode_layoutget_maxsz 0
449 #endif /* CONFIG_NFS_V4_1 */
450
451 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
452 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
453 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
454 encode_sequence_maxsz + \
455 encode_putfh_maxsz + \
456 encode_read_maxsz)
457 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
458 decode_sequence_maxsz + \
459 decode_putfh_maxsz + \
460 decode_read_maxsz)
461 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
462 encode_sequence_maxsz + \
463 encode_putfh_maxsz + \
464 encode_readlink_maxsz)
465 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
466 decode_sequence_maxsz + \
467 decode_putfh_maxsz + \
468 decode_readlink_maxsz)
469 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
470 encode_sequence_maxsz + \
471 encode_putfh_maxsz + \
472 encode_readdir_maxsz)
473 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
474 decode_sequence_maxsz + \
475 decode_putfh_maxsz + \
476 decode_readdir_maxsz)
477 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
478 encode_sequence_maxsz + \
479 encode_putfh_maxsz + \
480 encode_write_maxsz + \
481 encode_getattr_maxsz)
482 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
483 decode_sequence_maxsz + \
484 decode_putfh_maxsz + \
485 decode_write_maxsz + \
486 decode_getattr_maxsz)
487 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
488 encode_sequence_maxsz + \
489 encode_putfh_maxsz + \
490 encode_commit_maxsz)
491 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
492 decode_sequence_maxsz + \
493 decode_putfh_maxsz + \
494 decode_commit_maxsz)
495 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
496 encode_sequence_maxsz + \
497 encode_putfh_maxsz + \
498 encode_open_maxsz + \
499 encode_access_maxsz + \
500 encode_getfh_maxsz + \
501 encode_getattr_maxsz + \
502 encode_layoutget_maxsz)
503 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
504 decode_sequence_maxsz + \
505 decode_putfh_maxsz + \
506 decode_open_maxsz + \
507 decode_access_maxsz + \
508 decode_getfh_maxsz + \
509 decode_getattr_maxsz + \
510 decode_layoutget_maxsz)
511 #define NFS4_enc_open_confirm_sz \
512 (compound_encode_hdr_maxsz + \
513 encode_putfh_maxsz + \
514 encode_open_confirm_maxsz)
515 #define NFS4_dec_open_confirm_sz \
516 (compound_decode_hdr_maxsz + \
517 decode_putfh_maxsz + \
518 decode_open_confirm_maxsz)
519 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
520 encode_sequence_maxsz + \
521 encode_putfh_maxsz + \
522 encode_open_maxsz + \
523 encode_access_maxsz + \
524 encode_getattr_maxsz + \
525 encode_layoutget_maxsz)
526 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
527 decode_sequence_maxsz + \
528 decode_putfh_maxsz + \
529 decode_open_maxsz + \
530 decode_access_maxsz + \
531 decode_getattr_maxsz + \
532 decode_layoutget_maxsz)
533 #define NFS4_enc_open_downgrade_sz \
534 (compound_encode_hdr_maxsz + \
535 encode_sequence_maxsz + \
536 encode_putfh_maxsz + \
537 encode_layoutreturn_maxsz + \
538 encode_open_downgrade_maxsz)
539 #define NFS4_dec_open_downgrade_sz \
540 (compound_decode_hdr_maxsz + \
541 decode_sequence_maxsz + \
542 decode_putfh_maxsz + \
543 decode_layoutreturn_maxsz + \
544 decode_open_downgrade_maxsz)
545 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
546 encode_sequence_maxsz + \
547 encode_putfh_maxsz + \
548 encode_layoutreturn_maxsz + \
549 encode_close_maxsz + \
550 encode_getattr_maxsz)
551 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
552 decode_sequence_maxsz + \
553 decode_putfh_maxsz + \
554 decode_layoutreturn_maxsz + \
555 decode_close_maxsz + \
556 decode_getattr_maxsz)
557 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
558 encode_sequence_maxsz + \
559 encode_putfh_maxsz + \
560 encode_setattr_maxsz + \
561 encode_getattr_maxsz)
562 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
563 decode_sequence_maxsz + \
564 decode_putfh_maxsz + \
565 decode_setattr_maxsz + \
566 decode_getattr_maxsz)
567 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
570 encode_fsinfo_maxsz)
571 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
572 decode_sequence_maxsz + \
573 decode_putfh_maxsz + \
574 decode_fsinfo_maxsz)
575 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
576 encode_renew_maxsz)
577 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
578 decode_renew_maxsz)
579 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
580 encode_setclientid_maxsz)
581 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
582 decode_setclientid_maxsz)
583 #define NFS4_enc_setclientid_confirm_sz \
584 (compound_encode_hdr_maxsz + \
585 encode_setclientid_confirm_maxsz)
586 #define NFS4_dec_setclientid_confirm_sz \
587 (compound_decode_hdr_maxsz + \
588 decode_setclientid_confirm_maxsz)
589 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_lock_maxsz)
593 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
594 decode_sequence_maxsz + \
595 decode_putfh_maxsz + \
596 decode_lock_maxsz)
597 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
598 encode_sequence_maxsz + \
599 encode_putfh_maxsz + \
600 encode_lockt_maxsz)
601 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
602 decode_sequence_maxsz + \
603 decode_putfh_maxsz + \
604 decode_lockt_maxsz)
605 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
606 encode_sequence_maxsz + \
607 encode_putfh_maxsz + \
608 encode_locku_maxsz)
609 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
610 decode_sequence_maxsz + \
611 decode_putfh_maxsz + \
612 decode_locku_maxsz)
613 #define NFS4_enc_release_lockowner_sz \
614 (compound_encode_hdr_maxsz + \
615 encode_lockowner_maxsz)
616 #define NFS4_dec_release_lockowner_sz \
617 (compound_decode_hdr_maxsz + \
618 decode_lockowner_maxsz)
619 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
620 encode_sequence_maxsz + \
621 encode_putfh_maxsz + \
622 encode_access_maxsz + \
623 encode_getattr_maxsz)
624 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
625 decode_sequence_maxsz + \
626 decode_putfh_maxsz + \
627 decode_access_maxsz + \
628 decode_getattr_maxsz)
629 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_getattr_maxsz + \
633 encode_renew_maxsz)
634 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
635 decode_sequence_maxsz + \
636 decode_putfh_maxsz + \
637 decode_getattr_maxsz + \
638 decode_renew_maxsz)
639 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
640 encode_sequence_maxsz + \
641 encode_putfh_maxsz + \
642 encode_lookup_maxsz + \
643 encode_getattr_maxsz + \
644 encode_getfh_maxsz)
645 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
646 decode_sequence_maxsz + \
647 decode_putfh_maxsz + \
648 decode_lookup_maxsz + \
649 decode_getattr_maxsz + \
650 decode_getfh_maxsz)
651 #define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \
652 encode_sequence_maxsz + \
653 encode_putfh_maxsz + \
654 encode_lookupp_maxsz + \
655 encode_getattr_maxsz + \
656 encode_getfh_maxsz)
657 #define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \
658 decode_sequence_maxsz + \
659 decode_putfh_maxsz + \
660 decode_lookupp_maxsz + \
661 decode_getattr_maxsz + \
662 decode_getfh_maxsz)
663 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
664 encode_sequence_maxsz + \
665 encode_putrootfh_maxsz + \
666 encode_getattr_maxsz + \
667 encode_getfh_maxsz)
668 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
669 decode_sequence_maxsz + \
670 decode_putrootfh_maxsz + \
671 decode_getattr_maxsz + \
672 decode_getfh_maxsz)
673 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
674 encode_sequence_maxsz + \
675 encode_putfh_maxsz + \
676 encode_remove_maxsz)
677 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
678 decode_sequence_maxsz + \
679 decode_putfh_maxsz + \
680 decode_remove_maxsz)
681 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
682 encode_sequence_maxsz + \
683 encode_putfh_maxsz + \
684 encode_savefh_maxsz + \
685 encode_putfh_maxsz + \
686 encode_rename_maxsz)
687 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
688 decode_sequence_maxsz + \
689 decode_putfh_maxsz + \
690 decode_savefh_maxsz + \
691 decode_putfh_maxsz + \
692 decode_rename_maxsz)
693 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
694 encode_sequence_maxsz + \
695 encode_putfh_maxsz + \
696 encode_savefh_maxsz + \
697 encode_putfh_maxsz + \
698 encode_link_maxsz + \
699 encode_restorefh_maxsz + \
700 encode_getattr_maxsz)
701 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_savefh_maxsz + \
705 decode_putfh_maxsz + \
706 decode_link_maxsz + \
707 decode_restorefh_maxsz + \
708 decode_getattr_maxsz)
709 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
710 encode_sequence_maxsz + \
711 encode_putfh_maxsz + \
712 encode_symlink_maxsz + \
713 encode_getattr_maxsz + \
714 encode_getfh_maxsz)
715 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
716 decode_sequence_maxsz + \
717 decode_putfh_maxsz + \
718 decode_symlink_maxsz + \
719 decode_getattr_maxsz + \
720 decode_getfh_maxsz)
721 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
722 encode_sequence_maxsz + \
723 encode_putfh_maxsz + \
724 encode_create_maxsz + \
725 encode_getfh_maxsz + \
726 encode_getattr_maxsz)
727 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
728 decode_sequence_maxsz + \
729 decode_putfh_maxsz + \
730 decode_create_maxsz + \
731 decode_getfh_maxsz + \
732 decode_getattr_maxsz)
733 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
734 encode_sequence_maxsz + \
735 encode_putfh_maxsz + \
736 encode_getattr_maxsz)
737 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_getattr_maxsz)
741 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
742 encode_sequence_maxsz + \
743 encode_putfh_maxsz + \
744 encode_statfs_maxsz)
745 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
746 decode_sequence_maxsz + \
747 decode_putfh_maxsz + \
748 decode_statfs_maxsz)
749 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
750 encode_sequence_maxsz + \
751 encode_putfh_maxsz + \
752 encode_getattr_maxsz)
753 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
754 decode_sequence_maxsz + \
755 decode_putfh_maxsz + \
756 decode_getattr_maxsz)
757 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
758 encode_sequence_maxsz + \
759 encode_putfh_maxsz + \
760 encode_layoutreturn_maxsz + \
761 encode_delegreturn_maxsz + \
762 encode_getattr_maxsz)
763 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
764 decode_sequence_maxsz + \
765 decode_putfh_maxsz + \
766 decode_layoutreturn_maxsz + \
767 decode_delegreturn_maxsz + \
768 decode_getattr_maxsz)
769 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
770 encode_sequence_maxsz + \
771 encode_putfh_maxsz + \
772 encode_getacl_maxsz)
773 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
774 decode_sequence_maxsz + \
775 decode_putfh_maxsz + \
776 decode_getacl_maxsz)
777 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
778 encode_sequence_maxsz + \
779 encode_putfh_maxsz + \
780 encode_setacl_maxsz)
781 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz + \
783 decode_putfh_maxsz + \
784 decode_setacl_maxsz)
785 #define NFS4_enc_fs_locations_sz \
786 (compound_encode_hdr_maxsz + \
787 encode_sequence_maxsz + \
788 encode_putfh_maxsz + \
789 encode_lookup_maxsz + \
790 encode_fs_locations_maxsz + \
791 encode_renew_maxsz)
792 #define NFS4_dec_fs_locations_sz \
793 (compound_decode_hdr_maxsz + \
794 decode_sequence_maxsz + \
795 decode_putfh_maxsz + \
796 decode_lookup_maxsz + \
797 decode_fs_locations_maxsz + \
798 decode_renew_maxsz)
799 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
800 encode_sequence_maxsz + \
801 encode_putfh_maxsz + \
802 encode_secinfo_maxsz)
803 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
804 decode_sequence_maxsz + \
805 decode_putfh_maxsz + \
806 decode_secinfo_maxsz)
807 #define NFS4_enc_fsid_present_sz \
808 (compound_encode_hdr_maxsz + \
809 encode_sequence_maxsz + \
810 encode_putfh_maxsz + \
811 encode_getfh_maxsz + \
812 encode_renew_maxsz)
813 #define NFS4_dec_fsid_present_sz \
814 (compound_decode_hdr_maxsz + \
815 decode_sequence_maxsz + \
816 decode_putfh_maxsz + \
817 decode_getfh_maxsz + \
818 decode_renew_maxsz)
819 #if defined(CONFIG_NFS_V4_1)
820 #define NFS4_enc_bind_conn_to_session_sz \
821 (compound_encode_hdr_maxsz + \
822 encode_bind_conn_to_session_maxsz)
823 #define NFS4_dec_bind_conn_to_session_sz \
824 (compound_decode_hdr_maxsz + \
825 decode_bind_conn_to_session_maxsz)
826 #define NFS4_enc_exchange_id_sz \
827 (compound_encode_hdr_maxsz + \
828 encode_exchange_id_maxsz)
829 #define NFS4_dec_exchange_id_sz \
830 (compound_decode_hdr_maxsz + \
831 decode_exchange_id_maxsz)
832 #define NFS4_enc_create_session_sz \
833 (compound_encode_hdr_maxsz + \
834 encode_create_session_maxsz)
835 #define NFS4_dec_create_session_sz \
836 (compound_decode_hdr_maxsz + \
837 decode_create_session_maxsz)
838 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
839 encode_destroy_session_maxsz)
840 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
841 decode_destroy_session_maxsz)
842 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
843 encode_destroy_clientid_maxsz)
844 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
845 decode_destroy_clientid_maxsz)
846 #define NFS4_enc_sequence_sz \
847 (compound_decode_hdr_maxsz + \
848 encode_sequence_maxsz)
849 #define NFS4_dec_sequence_sz \
850 (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz)
852 #endif
853 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
854 encode_sequence_maxsz + \
855 encode_putrootfh_maxsz + \
856 encode_fsinfo_maxsz)
857 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
858 decode_sequence_maxsz + \
859 decode_putrootfh_maxsz + \
860 decode_fsinfo_maxsz)
861 #if defined(CONFIG_NFS_V4_1)
862 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
863 encode_sequence_maxsz + \
864 encode_reclaim_complete_maxsz)
865 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
866 decode_sequence_maxsz + \
867 decode_reclaim_complete_maxsz)
868 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
869 encode_sequence_maxsz +\
870 encode_getdeviceinfo_maxsz)
871 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
872 decode_sequence_maxsz + \
873 decode_getdeviceinfo_maxsz)
874 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
875 encode_sequence_maxsz + \
876 encode_putfh_maxsz + \
877 encode_layoutget_maxsz)
878 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
879 decode_sequence_maxsz + \
880 decode_putfh_maxsz + \
881 decode_layoutget_maxsz)
882 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
883 encode_sequence_maxsz +\
884 encode_putfh_maxsz + \
885 encode_layoutcommit_maxsz + \
886 encode_getattr_maxsz)
887 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
888 decode_sequence_maxsz + \
889 decode_putfh_maxsz + \
890 decode_layoutcommit_maxsz + \
891 decode_getattr_maxsz)
892 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
893 encode_sequence_maxsz + \
894 encode_putfh_maxsz + \
895 encode_layoutreturn_maxsz)
896 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
897 decode_sequence_maxsz + \
898 decode_putfh_maxsz + \
899 decode_layoutreturn_maxsz)
900 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
901 encode_sequence_maxsz + \
902 encode_putrootfh_maxsz +\
903 encode_secinfo_no_name_maxsz)
904 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
905 decode_sequence_maxsz + \
906 decode_putrootfh_maxsz + \
907 decode_secinfo_no_name_maxsz)
908 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
909 encode_sequence_maxsz + \
910 encode_test_stateid_maxsz)
911 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
912 decode_sequence_maxsz + \
913 decode_test_stateid_maxsz)
914 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
915 encode_sequence_maxsz + \
916 encode_free_stateid_maxsz)
917 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
918 decode_sequence_maxsz + \
919 decode_free_stateid_maxsz)
920
921 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
922 compound_encode_hdr_maxsz +
923 encode_sequence_maxsz +
924 encode_putfh_maxsz +
925 encode_getattr_maxsz) *
926 XDR_UNIT);
927
928 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
929 compound_decode_hdr_maxsz +
930 decode_sequence_maxsz +
931 decode_putfh_maxsz) *
932 XDR_UNIT);
933
934 const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
935 compound_decode_hdr_maxsz +
936 decode_sequence_maxsz) *
937 XDR_UNIT);
938 EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
939 #endif /* CONFIG_NFS_V4_1 */
940
941 static const umode_t nfs_type2fmt[] = {
942 [NF4BAD] = 0,
943 [NF4REG] = S_IFREG,
944 [NF4DIR] = S_IFDIR,
945 [NF4BLK] = S_IFBLK,
946 [NF4CHR] = S_IFCHR,
947 [NF4LNK] = S_IFLNK,
948 [NF4SOCK] = S_IFSOCK,
949 [NF4FIFO] = S_IFIFO,
950 [NF4ATTRDIR] = 0,
951 [NF4NAMEDATTR] = 0,
952 };
953
954 struct compound_hdr {
955 int32_t status;
956 uint32_t nops;
957 __be32 * nops_p;
958 uint32_t taglen;
959 char * tag;
960 uint32_t replen; /* expected reply words */
961 u32 minorversion;
962 };
963
reserve_space(struct xdr_stream * xdr,size_t nbytes)964 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
965 {
966 __be32 *p = xdr_reserve_space(xdr, nbytes);
967 BUG_ON(!p);
968 return p;
969 }
970
encode_opaque_fixed(struct xdr_stream * xdr,const void * buf,size_t len)971 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
972 {
973 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0);
974 }
975
encode_string(struct xdr_stream * xdr,unsigned int len,const char * str)976 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
977 {
978 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0);
979 }
980
encode_uint32(struct xdr_stream * xdr,u32 n)981 static void encode_uint32(struct xdr_stream *xdr, u32 n)
982 {
983 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
984 }
985
encode_uint64(struct xdr_stream * xdr,u64 n)986 static void encode_uint64(struct xdr_stream *xdr, u64 n)
987 {
988 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
989 }
990
xdr_encode_bitmap4(struct xdr_stream * xdr,const __u32 * bitmap,size_t len)991 static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr,
992 const __u32 *bitmap, size_t len)
993 {
994 ssize_t ret;
995
996 /* Trim empty words */
997 while (len > 0 && bitmap[len-1] == 0)
998 len--;
999 ret = xdr_stream_encode_uint32_array(xdr, bitmap, len);
1000 if (WARN_ON_ONCE(ret < 0))
1001 return ret;
1002 return len;
1003 }
1004
mask_bitmap4(const __u32 * bitmap,const __u32 * mask,__u32 * res,size_t len)1005 static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask,
1006 __u32 *res, size_t len)
1007 {
1008 size_t i;
1009 __u32 tmp;
1010
1011 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0))
1012 len--;
1013 for (i = len; i-- > 0;) {
1014 tmp = bitmap[i] & mask[i];
1015 res[i] = tmp;
1016 }
1017 return len;
1018 }
1019
encode_nfs4_seqid(struct xdr_stream * xdr,const struct nfs_seqid * seqid)1020 static void encode_nfs4_seqid(struct xdr_stream *xdr,
1021 const struct nfs_seqid *seqid)
1022 {
1023 if (seqid != NULL)
1024 encode_uint32(xdr, seqid->sequence->counter);
1025 else
1026 encode_uint32(xdr, 0);
1027 }
1028
encode_compound_hdr(struct xdr_stream * xdr,struct rpc_rqst * req,struct compound_hdr * hdr)1029 static void encode_compound_hdr(struct xdr_stream *xdr,
1030 struct rpc_rqst *req,
1031 struct compound_hdr *hdr)
1032 {
1033 __be32 *p;
1034
1035 /* initialize running count of expected bytes in reply.
1036 * NOTE: the replied tag SHOULD be the same is the one sent,
1037 * but this is not required as a MUST for the server to do so. */
1038 hdr->replen = 3 + hdr->taglen;
1039
1040 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
1041 encode_string(xdr, hdr->taglen, hdr->tag);
1042 p = reserve_space(xdr, 8);
1043 *p++ = cpu_to_be32(hdr->minorversion);
1044 hdr->nops_p = p;
1045 *p = cpu_to_be32(hdr->nops);
1046 }
1047
encode_op_hdr(struct xdr_stream * xdr,enum nfs_opnum4 op,uint32_t replen,struct compound_hdr * hdr)1048 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
1049 uint32_t replen,
1050 struct compound_hdr *hdr)
1051 {
1052 encode_uint32(xdr, op);
1053 hdr->nops++;
1054 hdr->replen += replen;
1055 }
1056
encode_nops(struct compound_hdr * hdr)1057 static void encode_nops(struct compound_hdr *hdr)
1058 {
1059 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
1060 *hdr->nops_p = htonl(hdr->nops);
1061 }
1062
encode_nfs4_stateid(struct xdr_stream * xdr,const nfs4_stateid * stateid)1063 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1064 {
1065 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
1066 }
1067
encode_nfs4_verifier(struct xdr_stream * xdr,const nfs4_verifier * verf)1068 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
1069 {
1070 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1071 }
1072
1073 static __be32 *
xdr_encode_nfstime4(__be32 * p,const struct timespec64 * t)1074 xdr_encode_nfstime4(__be32 *p, const struct timespec64 *t)
1075 {
1076 p = xdr_encode_hyper(p, t->tv_sec);
1077 *p++ = cpu_to_be32(t->tv_nsec);
1078 return p;
1079 }
1080
encode_attrs(struct xdr_stream * xdr,const struct iattr * iap,const struct nfs4_label * label,const umode_t * umask,const struct nfs_server * server,const uint32_t attrmask[])1081 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1082 const struct nfs4_label *label,
1083 const umode_t *umask,
1084 const struct nfs_server *server,
1085 const uint32_t attrmask[])
1086 {
1087 char owner_name[IDMAP_NAMESZ];
1088 char owner_group[IDMAP_NAMESZ];
1089 int owner_namelen = 0;
1090 int owner_grouplen = 0;
1091 __be32 *p;
1092 uint32_t len = 0;
1093 uint32_t bmval[3] = { 0 };
1094
1095 /*
1096 * We reserve enough space to write the entire attribute buffer at once.
1097 */
1098 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) {
1099 bmval[0] |= FATTR4_WORD0_SIZE;
1100 len += 8;
1101 }
1102 if (iap->ia_valid & ATTR_MODE) {
1103 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) {
1104 bmval[2] |= FATTR4_WORD2_MODE_UMASK;
1105 len += 8;
1106 } else if (attrmask[1] & FATTR4_WORD1_MODE) {
1107 bmval[1] |= FATTR4_WORD1_MODE;
1108 len += 4;
1109 }
1110 }
1111 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) {
1112 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1113 if (owner_namelen < 0) {
1114 dprintk("nfs: couldn't resolve uid %d to string\n",
1115 from_kuid(&init_user_ns, iap->ia_uid));
1116 /* XXX */
1117 strcpy(owner_name, "nobody");
1118 owner_namelen = sizeof("nobody") - 1;
1119 /* goto out; */
1120 }
1121 bmval[1] |= FATTR4_WORD1_OWNER;
1122 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1123 }
1124 if ((iap->ia_valid & ATTR_GID) &&
1125 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) {
1126 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1127 if (owner_grouplen < 0) {
1128 dprintk("nfs: couldn't resolve gid %d to string\n",
1129 from_kgid(&init_user_ns, iap->ia_gid));
1130 strcpy(owner_group, "nobody");
1131 owner_grouplen = sizeof("nobody") - 1;
1132 /* goto out; */
1133 }
1134 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1135 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1136 }
1137 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1138 if (iap->ia_valid & ATTR_ATIME_SET) {
1139 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1140 len += 4 + (nfstime4_maxsz << 2);
1141 } else if (iap->ia_valid & ATTR_ATIME) {
1142 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1143 len += 4;
1144 }
1145 }
1146 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1147 if (iap->ia_valid & ATTR_MTIME_SET) {
1148 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1149 len += 4 + (nfstime4_maxsz << 2);
1150 } else if (iap->ia_valid & ATTR_MTIME) {
1151 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1152 len += 4;
1153 }
1154 }
1155
1156 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1157 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1158 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1159 }
1160
1161 xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval));
1162 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len);
1163
1164 if (bmval[0] & FATTR4_WORD0_SIZE)
1165 p = xdr_encode_hyper(p, iap->ia_size);
1166 if (bmval[1] & FATTR4_WORD1_MODE)
1167 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1168 if (bmval[1] & FATTR4_WORD1_OWNER)
1169 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1170 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1171 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1172 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1173 if (iap->ia_valid & ATTR_ATIME_SET) {
1174 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1175 p = xdr_encode_nfstime4(p, &iap->ia_atime);
1176 } else
1177 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1178 }
1179 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1180 if (iap->ia_valid & ATTR_MTIME_SET) {
1181 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1182 p = xdr_encode_nfstime4(p, &iap->ia_mtime);
1183 } else
1184 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1185 }
1186 if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1187 *p++ = cpu_to_be32(label->lfs);
1188 *p++ = cpu_to_be32(label->pi);
1189 *p++ = cpu_to_be32(label->len);
1190 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1191 }
1192 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
1193 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1194 *p++ = cpu_to_be32(*umask);
1195 }
1196
1197 /* out: */
1198 }
1199
encode_access(struct xdr_stream * xdr,u32 access,struct compound_hdr * hdr)1200 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1201 {
1202 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1203 encode_uint32(xdr, access);
1204 }
1205
encode_close(struct xdr_stream * xdr,const struct nfs_closeargs * arg,struct compound_hdr * hdr)1206 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1207 {
1208 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1209 encode_nfs4_seqid(xdr, arg->seqid);
1210 encode_nfs4_stateid(xdr, &arg->stateid);
1211 }
1212
encode_commit(struct xdr_stream * xdr,const struct nfs_commitargs * args,struct compound_hdr * hdr)1213 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1214 {
1215 __be32 *p;
1216
1217 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1218 p = reserve_space(xdr, 12);
1219 p = xdr_encode_hyper(p, args->offset);
1220 *p = cpu_to_be32(args->count);
1221 }
1222
encode_create(struct xdr_stream * xdr,const struct nfs4_create_arg * create,struct compound_hdr * hdr)1223 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1224 {
1225 __be32 *p;
1226
1227 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1228 encode_uint32(xdr, create->ftype);
1229
1230 switch (create->ftype) {
1231 case NF4LNK:
1232 p = reserve_space(xdr, 4);
1233 *p = cpu_to_be32(create->u.symlink.len);
1234 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1235 create->u.symlink.len);
1236 xdr->buf->flags |= XDRBUF_WRITE;
1237 break;
1238
1239 case NF4BLK: case NF4CHR:
1240 p = reserve_space(xdr, 8);
1241 *p++ = cpu_to_be32(create->u.device.specdata1);
1242 *p = cpu_to_be32(create->u.device.specdata2);
1243 break;
1244
1245 default:
1246 break;
1247 }
1248
1249 encode_string(xdr, create->name->len, create->name->name);
1250 encode_attrs(xdr, create->attrs, create->label, &create->umask,
1251 create->server, create->server->attr_bitmask);
1252 }
1253
encode_getattr(struct xdr_stream * xdr,const __u32 * bitmap,const __u32 * mask,size_t len,struct compound_hdr * hdr)1254 static void encode_getattr(struct xdr_stream *xdr,
1255 const __u32 *bitmap, const __u32 *mask, size_t len,
1256 struct compound_hdr *hdr)
1257 {
1258 __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz];
1259
1260 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1261 if (mask) {
1262 if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap)))
1263 len = ARRAY_SIZE(masked_bitmap);
1264 len = mask_bitmap4(bitmap, mask, masked_bitmap, len);
1265 bitmap = masked_bitmap;
1266 }
1267 xdr_encode_bitmap4(xdr, bitmap, len);
1268 }
1269
encode_getfattr(struct xdr_stream * xdr,const u32 * bitmask,struct compound_hdr * hdr)1270 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1271 {
1272 encode_getattr(xdr, nfs4_fattr_bitmap, bitmask,
1273 ARRAY_SIZE(nfs4_fattr_bitmap), hdr);
1274 }
1275
encode_getfattr_open(struct xdr_stream * xdr,const u32 * bitmask,const u32 * open_bitmap,struct compound_hdr * hdr)1276 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1277 const u32 *open_bitmap,
1278 struct compound_hdr *hdr)
1279 {
1280 encode_getattr(xdr, open_bitmap, bitmask, 3, hdr);
1281 }
1282
encode_fsinfo(struct xdr_stream * xdr,const u32 * bitmask,struct compound_hdr * hdr)1283 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1284 {
1285 encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask,
1286 ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr);
1287 }
1288
encode_fs_locations(struct xdr_stream * xdr,const u32 * bitmask,struct compound_hdr * hdr)1289 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1290 {
1291 encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask,
1292 ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr);
1293 }
1294
encode_getfh(struct xdr_stream * xdr,struct compound_hdr * hdr)1295 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1296 {
1297 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1298 }
1299
encode_link(struct xdr_stream * xdr,const struct qstr * name,struct compound_hdr * hdr)1300 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1301 {
1302 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1303 encode_string(xdr, name->len, name->name);
1304 }
1305
nfs4_lock_type(struct file_lock * fl,int block)1306 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1307 {
1308 if (fl->fl_type == F_RDLCK)
1309 return block ? NFS4_READW_LT : NFS4_READ_LT;
1310 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1311 }
1312
nfs4_lock_length(struct file_lock * fl)1313 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1314 {
1315 if (fl->fl_end == OFFSET_MAX)
1316 return ~(uint64_t)0;
1317 return fl->fl_end - fl->fl_start + 1;
1318 }
1319
encode_lockowner(struct xdr_stream * xdr,const struct nfs_lowner * lowner)1320 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1321 {
1322 __be32 *p;
1323
1324 p = reserve_space(xdr, 32);
1325 p = xdr_encode_hyper(p, lowner->clientid);
1326 *p++ = cpu_to_be32(20);
1327 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1328 *p++ = cpu_to_be32(lowner->s_dev);
1329 xdr_encode_hyper(p, lowner->id);
1330 }
1331
1332 /*
1333 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1334 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1335 */
encode_lock(struct xdr_stream * xdr,const struct nfs_lock_args * args,struct compound_hdr * hdr)1336 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1337 {
1338 __be32 *p;
1339
1340 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1341 p = reserve_space(xdr, 28);
1342 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1343 *p++ = cpu_to_be32(args->reclaim);
1344 p = xdr_encode_hyper(p, args->fl->fl_start);
1345 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1346 *p = cpu_to_be32(args->new_lock_owner);
1347 if (args->new_lock_owner){
1348 encode_nfs4_seqid(xdr, args->open_seqid);
1349 encode_nfs4_stateid(xdr, &args->open_stateid);
1350 encode_nfs4_seqid(xdr, args->lock_seqid);
1351 encode_lockowner(xdr, &args->lock_owner);
1352 }
1353 else {
1354 encode_nfs4_stateid(xdr, &args->lock_stateid);
1355 encode_nfs4_seqid(xdr, args->lock_seqid);
1356 }
1357 }
1358
encode_lockt(struct xdr_stream * xdr,const struct nfs_lockt_args * args,struct compound_hdr * hdr)1359 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1360 {
1361 __be32 *p;
1362
1363 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1364 p = reserve_space(xdr, 20);
1365 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1366 p = xdr_encode_hyper(p, args->fl->fl_start);
1367 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1368 encode_lockowner(xdr, &args->lock_owner);
1369 }
1370
encode_locku(struct xdr_stream * xdr,const struct nfs_locku_args * args,struct compound_hdr * hdr)1371 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1372 {
1373 __be32 *p;
1374
1375 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1376 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1377 encode_nfs4_seqid(xdr, args->seqid);
1378 encode_nfs4_stateid(xdr, &args->stateid);
1379 p = reserve_space(xdr, 16);
1380 p = xdr_encode_hyper(p, args->fl->fl_start);
1381 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1382 }
1383
encode_release_lockowner(struct xdr_stream * xdr,const struct nfs_lowner * lowner,struct compound_hdr * hdr)1384 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1385 {
1386 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1387 encode_lockowner(xdr, lowner);
1388 }
1389
encode_lookup(struct xdr_stream * xdr,const struct qstr * name,struct compound_hdr * hdr)1390 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1391 {
1392 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1393 encode_string(xdr, name->len, name->name);
1394 }
1395
encode_lookupp(struct xdr_stream * xdr,struct compound_hdr * hdr)1396 static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr)
1397 {
1398 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr);
1399 }
1400
encode_share_access(struct xdr_stream * xdr,u32 share_access)1401 static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1402 {
1403 __be32 *p;
1404
1405 p = reserve_space(xdr, 8);
1406 *p++ = cpu_to_be32(share_access);
1407 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1408 }
1409
encode_openhdr(struct xdr_stream * xdr,const struct nfs_openargs * arg)1410 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1411 {
1412 __be32 *p;
1413 /*
1414 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1415 * owner 4 = 32
1416 */
1417 encode_nfs4_seqid(xdr, arg->seqid);
1418 encode_share_access(xdr, arg->share_access);
1419 p = reserve_space(xdr, 36);
1420 p = xdr_encode_hyper(p, arg->clientid);
1421 *p++ = cpu_to_be32(24);
1422 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1423 *p++ = cpu_to_be32(arg->server->s_dev);
1424 *p++ = cpu_to_be32(arg->id.uniquifier);
1425 xdr_encode_hyper(p, arg->id.create_time);
1426 }
1427
encode_createmode(struct xdr_stream * xdr,const struct nfs_openargs * arg)1428 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1429 {
1430 __be32 *p;
1431
1432 p = reserve_space(xdr, 4);
1433 switch(arg->createmode) {
1434 case NFS4_CREATE_UNCHECKED:
1435 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1436 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1437 arg->server, arg->server->attr_bitmask);
1438 break;
1439 case NFS4_CREATE_GUARDED:
1440 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1441 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1442 arg->server, arg->server->attr_bitmask);
1443 break;
1444 case NFS4_CREATE_EXCLUSIVE:
1445 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1446 encode_nfs4_verifier(xdr, &arg->u.verifier);
1447 break;
1448 case NFS4_CREATE_EXCLUSIVE4_1:
1449 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1450 encode_nfs4_verifier(xdr, &arg->u.verifier);
1451 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1452 arg->server, arg->server->exclcreat_bitmask);
1453 }
1454 }
1455
encode_opentype(struct xdr_stream * xdr,const struct nfs_openargs * arg)1456 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1457 {
1458 __be32 *p;
1459
1460 p = reserve_space(xdr, 4);
1461 switch (arg->open_flags & O_CREAT) {
1462 case 0:
1463 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1464 break;
1465 default:
1466 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1467 encode_createmode(xdr, arg);
1468 }
1469 }
1470
encode_delegation_type(struct xdr_stream * xdr,fmode_t delegation_type)1471 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1472 {
1473 __be32 *p;
1474
1475 p = reserve_space(xdr, 4);
1476 switch (delegation_type) {
1477 case 0:
1478 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1479 break;
1480 case FMODE_READ:
1481 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1482 break;
1483 case FMODE_WRITE|FMODE_READ:
1484 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1485 break;
1486 default:
1487 BUG();
1488 }
1489 }
1490
encode_claim_null(struct xdr_stream * xdr,const struct qstr * name)1491 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1492 {
1493 __be32 *p;
1494
1495 p = reserve_space(xdr, 4);
1496 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1497 encode_string(xdr, name->len, name->name);
1498 }
1499
encode_claim_previous(struct xdr_stream * xdr,fmode_t type)1500 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1501 {
1502 __be32 *p;
1503
1504 p = reserve_space(xdr, 4);
1505 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1506 encode_delegation_type(xdr, type);
1507 }
1508
encode_claim_delegate_cur(struct xdr_stream * xdr,const struct qstr * name,const nfs4_stateid * stateid)1509 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1510 {
1511 __be32 *p;
1512
1513 p = reserve_space(xdr, 4);
1514 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1515 encode_nfs4_stateid(xdr, stateid);
1516 encode_string(xdr, name->len, name->name);
1517 }
1518
encode_claim_fh(struct xdr_stream * xdr)1519 static inline void encode_claim_fh(struct xdr_stream *xdr)
1520 {
1521 __be32 *p;
1522
1523 p = reserve_space(xdr, 4);
1524 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1525 }
1526
encode_claim_delegate_cur_fh(struct xdr_stream * xdr,const nfs4_stateid * stateid)1527 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1528 {
1529 __be32 *p;
1530
1531 p = reserve_space(xdr, 4);
1532 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1533 encode_nfs4_stateid(xdr, stateid);
1534 }
1535
encode_open(struct xdr_stream * xdr,const struct nfs_openargs * arg,struct compound_hdr * hdr)1536 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1537 {
1538 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1539 encode_openhdr(xdr, arg);
1540 encode_opentype(xdr, arg);
1541 switch (arg->claim) {
1542 case NFS4_OPEN_CLAIM_NULL:
1543 encode_claim_null(xdr, arg->name);
1544 break;
1545 case NFS4_OPEN_CLAIM_PREVIOUS:
1546 encode_claim_previous(xdr, arg->u.delegation_type);
1547 break;
1548 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1549 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1550 break;
1551 case NFS4_OPEN_CLAIM_FH:
1552 encode_claim_fh(xdr);
1553 break;
1554 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1555 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1556 break;
1557 default:
1558 BUG();
1559 }
1560 }
1561
encode_open_confirm(struct xdr_stream * xdr,const struct nfs_open_confirmargs * arg,struct compound_hdr * hdr)1562 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1563 {
1564 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1565 encode_nfs4_stateid(xdr, arg->stateid);
1566 encode_nfs4_seqid(xdr, arg->seqid);
1567 }
1568
encode_open_downgrade(struct xdr_stream * xdr,const struct nfs_closeargs * arg,struct compound_hdr * hdr)1569 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1570 {
1571 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1572 encode_nfs4_stateid(xdr, &arg->stateid);
1573 encode_nfs4_seqid(xdr, arg->seqid);
1574 encode_share_access(xdr, arg->share_access);
1575 }
1576
1577 static void
encode_putfh(struct xdr_stream * xdr,const struct nfs_fh * fh,struct compound_hdr * hdr)1578 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1579 {
1580 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1581 encode_string(xdr, fh->size, fh->data);
1582 }
1583
encode_putrootfh(struct xdr_stream * xdr,struct compound_hdr * hdr)1584 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1585 {
1586 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1587 }
1588
encode_read(struct xdr_stream * xdr,const struct nfs_pgio_args * args,struct compound_hdr * hdr)1589 static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1590 struct compound_hdr *hdr)
1591 {
1592 __be32 *p;
1593
1594 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1595 encode_nfs4_stateid(xdr, &args->stateid);
1596
1597 p = reserve_space(xdr, 12);
1598 p = xdr_encode_hyper(p, args->offset);
1599 *p = cpu_to_be32(args->count);
1600 }
1601
encode_readdir(struct xdr_stream * xdr,const struct nfs4_readdir_arg * readdir,struct rpc_rqst * req,struct compound_hdr * hdr)1602 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1603 {
1604 uint32_t attrs[3] = {
1605 FATTR4_WORD0_RDATTR_ERROR,
1606 FATTR4_WORD1_MOUNTED_ON_FILEID,
1607 };
1608 uint32_t dircount = readdir->count;
1609 uint32_t maxcount = readdir->count;
1610 __be32 *p, verf[2];
1611 uint32_t attrlen = 0;
1612 unsigned int i;
1613
1614 if (readdir->plus) {
1615 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1616 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1617 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1618 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1619 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1620 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1621 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1622 }
1623 /* Use mounted_on_fileid only if the server supports it */
1624 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1625 attrs[0] |= FATTR4_WORD0_FILEID;
1626 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1627 attrs[i] &= readdir->bitmask[i];
1628 if (attrs[i] != 0)
1629 attrlen = i+1;
1630 }
1631
1632 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1633 encode_uint64(xdr, readdir->cookie);
1634 encode_nfs4_verifier(xdr, &readdir->verifier);
1635 p = reserve_space(xdr, 12 + (attrlen << 2));
1636 *p++ = cpu_to_be32(dircount);
1637 *p++ = cpu_to_be32(maxcount);
1638 *p++ = cpu_to_be32(attrlen);
1639 for (i = 0; i < attrlen; i++)
1640 *p++ = cpu_to_be32(attrs[i]);
1641 memcpy(verf, readdir->verifier.data, sizeof(verf));
1642
1643 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1644 __func__,
1645 (unsigned long long)readdir->cookie,
1646 verf[0], verf[1],
1647 attrs[0] & readdir->bitmask[0],
1648 attrs[1] & readdir->bitmask[1],
1649 attrs[2] & readdir->bitmask[2]);
1650 }
1651
encode_readlink(struct xdr_stream * xdr,const struct nfs4_readlink * readlink,struct rpc_rqst * req,struct compound_hdr * hdr)1652 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1653 {
1654 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1655 }
1656
encode_remove(struct xdr_stream * xdr,const struct qstr * name,struct compound_hdr * hdr)1657 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1658 {
1659 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1660 encode_string(xdr, name->len, name->name);
1661 }
1662
encode_rename(struct xdr_stream * xdr,const struct qstr * oldname,const struct qstr * newname,struct compound_hdr * hdr)1663 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1664 {
1665 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1666 encode_string(xdr, oldname->len, oldname->name);
1667 encode_string(xdr, newname->len, newname->name);
1668 }
1669
encode_renew(struct xdr_stream * xdr,clientid4 clid,struct compound_hdr * hdr)1670 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1671 struct compound_hdr *hdr)
1672 {
1673 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1674 encode_uint64(xdr, clid);
1675 }
1676
1677 static void
encode_restorefh(struct xdr_stream * xdr,struct compound_hdr * hdr)1678 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1679 {
1680 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1681 }
1682
nfs4_acltype_to_bitmap(enum nfs4_acl_type type,__u32 bitmap[2])1683 static void nfs4_acltype_to_bitmap(enum nfs4_acl_type type, __u32 bitmap[2])
1684 {
1685 switch (type) {
1686 default:
1687 bitmap[0] = FATTR4_WORD0_ACL;
1688 bitmap[1] = 0;
1689 break;
1690 case NFS4ACL_DACL:
1691 bitmap[0] = 0;
1692 bitmap[1] = FATTR4_WORD1_DACL;
1693 break;
1694 case NFS4ACL_SACL:
1695 bitmap[0] = 0;
1696 bitmap[1] = FATTR4_WORD1_SACL;
1697 }
1698 }
1699
encode_setacl(struct xdr_stream * xdr,const struct nfs_setaclargs * arg,struct compound_hdr * hdr)1700 static void encode_setacl(struct xdr_stream *xdr,
1701 const struct nfs_setaclargs *arg,
1702 struct compound_hdr *hdr)
1703 {
1704 __u32 bitmap[2];
1705
1706 nfs4_acltype_to_bitmap(arg->acl_type, bitmap);
1707
1708 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1709 encode_nfs4_stateid(xdr, &zero_stateid);
1710 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap));
1711 encode_uint32(xdr, arg->acl_len);
1712 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1713 }
1714
1715 static void
encode_savefh(struct xdr_stream * xdr,struct compound_hdr * hdr)1716 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1717 {
1718 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1719 }
1720
encode_setattr(struct xdr_stream * xdr,const struct nfs_setattrargs * arg,const struct nfs_server * server,struct compound_hdr * hdr)1721 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1722 {
1723 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1724 encode_nfs4_stateid(xdr, &arg->stateid);
1725 encode_attrs(xdr, arg->iap, arg->label, NULL, server,
1726 server->attr_bitmask);
1727 }
1728
encode_setclientid(struct xdr_stream * xdr,const struct nfs4_setclientid * setclientid,struct compound_hdr * hdr)1729 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1730 {
1731 __be32 *p;
1732
1733 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1734 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1735
1736 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1737 setclientid->sc_clnt->cl_owner_id);
1738 p = reserve_space(xdr, 4);
1739 *p = cpu_to_be32(setclientid->sc_prog);
1740 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1741 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1742 p = reserve_space(xdr, 4);
1743 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1744 }
1745
encode_setclientid_confirm(struct xdr_stream * xdr,const struct nfs4_setclientid_res * arg,struct compound_hdr * hdr)1746 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1747 {
1748 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1749 decode_setclientid_confirm_maxsz, hdr);
1750 encode_uint64(xdr, arg->clientid);
1751 encode_nfs4_verifier(xdr, &arg->confirm);
1752 }
1753
encode_write(struct xdr_stream * xdr,const struct nfs_pgio_args * args,struct compound_hdr * hdr)1754 static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1755 struct compound_hdr *hdr)
1756 {
1757 __be32 *p;
1758
1759 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1760 encode_nfs4_stateid(xdr, &args->stateid);
1761
1762 p = reserve_space(xdr, 16);
1763 p = xdr_encode_hyper(p, args->offset);
1764 *p++ = cpu_to_be32(args->stable);
1765 *p = cpu_to_be32(args->count);
1766
1767 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1768 }
1769
encode_delegreturn(struct xdr_stream * xdr,const nfs4_stateid * stateid,struct compound_hdr * hdr)1770 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1771 {
1772 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1773 encode_nfs4_stateid(xdr, stateid);
1774 }
1775
encode_secinfo(struct xdr_stream * xdr,const struct qstr * name,struct compound_hdr * hdr)1776 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1777 {
1778 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1779 encode_string(xdr, name->len, name->name);
1780 }
1781
1782 #if defined(CONFIG_NFS_V4_1)
1783 /* NFSv4.1 operations */
encode_bind_conn_to_session(struct xdr_stream * xdr,const struct nfs41_bind_conn_to_session_args * args,struct compound_hdr * hdr)1784 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1785 const struct nfs41_bind_conn_to_session_args *args,
1786 struct compound_hdr *hdr)
1787 {
1788 __be32 *p;
1789
1790 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1791 decode_bind_conn_to_session_maxsz, hdr);
1792 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1793 p = xdr_reserve_space(xdr, 8);
1794 *p++ = cpu_to_be32(args->dir);
1795 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1796 }
1797
encode_op_map(struct xdr_stream * xdr,const struct nfs4_op_map * op_map)1798 static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map)
1799 {
1800 unsigned int i;
1801 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1802 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1803 encode_uint32(xdr, op_map->u.words[i]);
1804 }
1805
encode_exchange_id(struct xdr_stream * xdr,const struct nfs41_exchange_id_args * args,struct compound_hdr * hdr)1806 static void encode_exchange_id(struct xdr_stream *xdr,
1807 const struct nfs41_exchange_id_args *args,
1808 struct compound_hdr *hdr)
1809 {
1810 __be32 *p;
1811 char impl_name[IMPL_NAME_LIMIT];
1812 int len = 0;
1813
1814 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1815 encode_nfs4_verifier(xdr, &args->verifier);
1816
1817 encode_string(xdr, strlen(args->client->cl_owner_id),
1818 args->client->cl_owner_id);
1819
1820 encode_uint32(xdr, args->flags);
1821 encode_uint32(xdr, args->state_protect.how);
1822
1823 switch (args->state_protect.how) {
1824 case SP4_NONE:
1825 break;
1826 case SP4_MACH_CRED:
1827 encode_op_map(xdr, &args->state_protect.enforce);
1828 encode_op_map(xdr, &args->state_protect.allow);
1829 break;
1830 default:
1831 WARN_ON_ONCE(1);
1832 break;
1833 }
1834
1835 if (send_implementation_id &&
1836 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1837 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1838 <= sizeof(impl_name) + 1)
1839 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1840 utsname()->sysname, utsname()->release,
1841 utsname()->version, utsname()->machine);
1842
1843 if (len > 0) {
1844 encode_uint32(xdr, 1); /* implementation id array length=1 */
1845
1846 encode_string(xdr,
1847 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1848 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1849 encode_string(xdr, len, impl_name);
1850 /* just send zeros for nii_date - the date is in nii_name */
1851 p = reserve_space(xdr, 12);
1852 p = xdr_encode_hyper(p, 0);
1853 *p = cpu_to_be32(0);
1854 } else
1855 encode_uint32(xdr, 0); /* implementation id array length=0 */
1856 }
1857
encode_create_session(struct xdr_stream * xdr,const struct nfs41_create_session_args * args,struct compound_hdr * hdr)1858 static void encode_create_session(struct xdr_stream *xdr,
1859 const struct nfs41_create_session_args *args,
1860 struct compound_hdr *hdr)
1861 {
1862 __be32 *p;
1863 struct nfs_client *clp = args->client;
1864 struct rpc_clnt *clnt = clp->cl_rpcclient;
1865 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1866 u32 max_resp_sz_cached;
1867
1868 /*
1869 * Assumes OPEN is the biggest non-idempotent compound.
1870 * 2 is the verifier.
1871 */
1872 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2)
1873 * XDR_UNIT + RPC_MAX_AUTH_SIZE;
1874
1875 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1876 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1877 p = xdr_encode_hyper(p, args->clientid);
1878 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1879 *p++ = cpu_to_be32(args->flags); /*flags */
1880
1881 /* Fore Channel */
1882 *p++ = cpu_to_be32(0); /* header padding size */
1883 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1884 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1885 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1886 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1887 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1888 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1889
1890 /* Back Channel */
1891 *p++ = cpu_to_be32(0); /* header padding size */
1892 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1893 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1894 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1895 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1896 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1897 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1898
1899 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1900 *p++ = cpu_to_be32(1);
1901 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1902
1903 /* authsys_parms rfc1831 */
1904 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1905 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1906 *p++ = cpu_to_be32(0); /* UID */
1907 *p++ = cpu_to_be32(0); /* GID */
1908 *p = cpu_to_be32(0); /* No more gids */
1909 }
1910
encode_destroy_session(struct xdr_stream * xdr,const struct nfs4_session * session,struct compound_hdr * hdr)1911 static void encode_destroy_session(struct xdr_stream *xdr,
1912 const struct nfs4_session *session,
1913 struct compound_hdr *hdr)
1914 {
1915 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1916 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1917 }
1918
encode_destroy_clientid(struct xdr_stream * xdr,uint64_t clientid,struct compound_hdr * hdr)1919 static void encode_destroy_clientid(struct xdr_stream *xdr,
1920 uint64_t clientid,
1921 struct compound_hdr *hdr)
1922 {
1923 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1924 encode_uint64(xdr, clientid);
1925 }
1926
encode_reclaim_complete(struct xdr_stream * xdr,const struct nfs41_reclaim_complete_args * args,struct compound_hdr * hdr)1927 static void encode_reclaim_complete(struct xdr_stream *xdr,
1928 const struct nfs41_reclaim_complete_args *args,
1929 struct compound_hdr *hdr)
1930 {
1931 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1932 encode_uint32(xdr, args->one_fs);
1933 }
1934 #endif /* CONFIG_NFS_V4_1 */
1935
encode_sequence(struct xdr_stream * xdr,const struct nfs4_sequence_args * args,struct compound_hdr * hdr)1936 static void encode_sequence(struct xdr_stream *xdr,
1937 const struct nfs4_sequence_args *args,
1938 struct compound_hdr *hdr)
1939 {
1940 #if defined(CONFIG_NFS_V4_1)
1941 struct nfs4_session *session;
1942 struct nfs4_slot_table *tp;
1943 struct nfs4_slot *slot = args->sa_slot;
1944 __be32 *p;
1945
1946 tp = slot->table;
1947 session = tp->session;
1948 if (!session)
1949 return;
1950
1951 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1952
1953 /*
1954 * Sessionid + seqid + slotid + max slotid + cache_this
1955 */
1956 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1957 "max_slotid=%d cache_this=%d\n",
1958 __func__,
1959 ((u32 *)session->sess_id.data)[0],
1960 ((u32 *)session->sess_id.data)[1],
1961 ((u32 *)session->sess_id.data)[2],
1962 ((u32 *)session->sess_id.data)[3],
1963 slot->seq_nr, slot->slot_nr,
1964 tp->highest_used_slotid, args->sa_cache_this);
1965 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1966 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1967 *p++ = cpu_to_be32(slot->seq_nr);
1968 *p++ = cpu_to_be32(slot->slot_nr);
1969 *p++ = cpu_to_be32(tp->highest_used_slotid);
1970 *p = cpu_to_be32(args->sa_cache_this);
1971 #endif /* CONFIG_NFS_V4_1 */
1972 }
1973
1974 #ifdef CONFIG_NFS_V4_1
1975 static void
encode_getdeviceinfo(struct xdr_stream * xdr,const struct nfs4_getdeviceinfo_args * args,struct compound_hdr * hdr)1976 encode_getdeviceinfo(struct xdr_stream *xdr,
1977 const struct nfs4_getdeviceinfo_args *args,
1978 struct compound_hdr *hdr)
1979 {
1980 __be32 *p;
1981
1982 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1983 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1984 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1985 NFS4_DEVICEID4_SIZE);
1986 *p++ = cpu_to_be32(args->pdev->layout_type);
1987 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1988
1989 p = reserve_space(xdr, 4 + 4);
1990 *p++ = cpu_to_be32(1); /* bitmap length */
1991 *p++ = cpu_to_be32(args->notify_types);
1992 }
1993
1994 static void
encode_layoutget(struct xdr_stream * xdr,const struct nfs4_layoutget_args * args,struct compound_hdr * hdr)1995 encode_layoutget(struct xdr_stream *xdr,
1996 const struct nfs4_layoutget_args *args,
1997 struct compound_hdr *hdr)
1998 {
1999 __be32 *p;
2000
2001 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
2002 p = reserve_space(xdr, 36);
2003 *p++ = cpu_to_be32(0); /* Signal layout available */
2004 *p++ = cpu_to_be32(args->type);
2005 *p++ = cpu_to_be32(args->range.iomode);
2006 p = xdr_encode_hyper(p, args->range.offset);
2007 p = xdr_encode_hyper(p, args->range.length);
2008 p = xdr_encode_hyper(p, args->minlength);
2009 encode_nfs4_stateid(xdr, &args->stateid);
2010 encode_uint32(xdr, args->maxcount);
2011
2012 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
2013 __func__,
2014 args->type,
2015 args->range.iomode,
2016 (unsigned long)args->range.offset,
2017 (unsigned long)args->range.length,
2018 args->maxcount);
2019 }
2020
2021 static int
encode_layoutcommit(struct xdr_stream * xdr,struct inode * inode,const struct nfs4_layoutcommit_args * args,struct compound_hdr * hdr)2022 encode_layoutcommit(struct xdr_stream *xdr,
2023 struct inode *inode,
2024 const struct nfs4_layoutcommit_args *args,
2025 struct compound_hdr *hdr)
2026 {
2027 __be32 *p;
2028
2029 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
2030 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
2031
2032 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
2033 p = reserve_space(xdr, 20);
2034 /* Only whole file layouts */
2035 p = xdr_encode_hyper(p, 0); /* offset */
2036 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
2037 *p = cpu_to_be32(0); /* reclaim */
2038 encode_nfs4_stateid(xdr, &args->stateid);
2039 if (args->lastbytewritten != U64_MAX) {
2040 p = reserve_space(xdr, 20);
2041 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
2042 p = xdr_encode_hyper(p, args->lastbytewritten);
2043 } else {
2044 p = reserve_space(xdr, 12);
2045 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2046 }
2047 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2048 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2049
2050 encode_uint32(xdr, args->layoutupdate_len);
2051 if (args->layoutupdate_pages)
2052 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2053 args->layoutupdate_len);
2054
2055 return 0;
2056 }
2057
2058 static void
encode_layoutreturn(struct xdr_stream * xdr,const struct nfs4_layoutreturn_args * args,struct compound_hdr * hdr)2059 encode_layoutreturn(struct xdr_stream *xdr,
2060 const struct nfs4_layoutreturn_args *args,
2061 struct compound_hdr *hdr)
2062 {
2063 __be32 *p;
2064
2065 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2066 p = reserve_space(xdr, 16);
2067 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2068 *p++ = cpu_to_be32(args->layout_type);
2069 *p++ = cpu_to_be32(args->range.iomode);
2070 *p = cpu_to_be32(RETURN_FILE);
2071 p = reserve_space(xdr, 16);
2072 p = xdr_encode_hyper(p, args->range.offset);
2073 p = xdr_encode_hyper(p, args->range.length);
2074 spin_lock(&args->inode->i_lock);
2075 encode_nfs4_stateid(xdr, &args->stateid);
2076 spin_unlock(&args->inode->i_lock);
2077 if (args->ld_private->ops && args->ld_private->ops->encode)
2078 args->ld_private->ops->encode(xdr, args, args->ld_private);
2079 else
2080 encode_uint32(xdr, 0);
2081 }
2082
2083 static int
encode_secinfo_no_name(struct xdr_stream * xdr,const struct nfs41_secinfo_no_name_args * args,struct compound_hdr * hdr)2084 encode_secinfo_no_name(struct xdr_stream *xdr,
2085 const struct nfs41_secinfo_no_name_args *args,
2086 struct compound_hdr *hdr)
2087 {
2088 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2089 encode_uint32(xdr, args->style);
2090 return 0;
2091 }
2092
encode_test_stateid(struct xdr_stream * xdr,const struct nfs41_test_stateid_args * args,struct compound_hdr * hdr)2093 static void encode_test_stateid(struct xdr_stream *xdr,
2094 const struct nfs41_test_stateid_args *args,
2095 struct compound_hdr *hdr)
2096 {
2097 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2098 encode_uint32(xdr, 1);
2099 encode_nfs4_stateid(xdr, args->stateid);
2100 }
2101
encode_free_stateid(struct xdr_stream * xdr,const struct nfs41_free_stateid_args * args,struct compound_hdr * hdr)2102 static void encode_free_stateid(struct xdr_stream *xdr,
2103 const struct nfs41_free_stateid_args *args,
2104 struct compound_hdr *hdr)
2105 {
2106 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2107 encode_nfs4_stateid(xdr, &args->stateid);
2108 }
2109 #else
2110 static inline void
encode_layoutreturn(struct xdr_stream * xdr,const struct nfs4_layoutreturn_args * args,struct compound_hdr * hdr)2111 encode_layoutreturn(struct xdr_stream *xdr,
2112 const struct nfs4_layoutreturn_args *args,
2113 struct compound_hdr *hdr)
2114 {
2115 }
2116
2117 static void
encode_layoutget(struct xdr_stream * xdr,const struct nfs4_layoutget_args * args,struct compound_hdr * hdr)2118 encode_layoutget(struct xdr_stream *xdr,
2119 const struct nfs4_layoutget_args *args,
2120 struct compound_hdr *hdr)
2121 {
2122 }
2123 #endif /* CONFIG_NFS_V4_1 */
2124
2125 /*
2126 * END OF "GENERIC" ENCODE ROUTINES.
2127 */
2128
nfs4_xdr_minorversion(const struct nfs4_sequence_args * args)2129 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2130 {
2131 #if defined(CONFIG_NFS_V4_1)
2132 struct nfs4_session *session = args->sa_slot->table->session;
2133 if (session)
2134 return session->clp->cl_mvops->minor_version;
2135 #endif /* CONFIG_NFS_V4_1 */
2136 return 0;
2137 }
2138
2139 /*
2140 * Encode an ACCESS request
2141 */
nfs4_xdr_enc_access(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2142 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2143 const void *data)
2144 {
2145 const struct nfs4_accessargs *args = data;
2146 struct compound_hdr hdr = {
2147 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2148 };
2149
2150 encode_compound_hdr(xdr, req, &hdr);
2151 encode_sequence(xdr, &args->seq_args, &hdr);
2152 encode_putfh(xdr, args->fh, &hdr);
2153 encode_access(xdr, args->access, &hdr);
2154 if (args->bitmask)
2155 encode_getfattr(xdr, args->bitmask, &hdr);
2156 encode_nops(&hdr);
2157 }
2158
2159 /*
2160 * Encode LOOKUP request
2161 */
nfs4_xdr_enc_lookup(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2162 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2163 const void *data)
2164 {
2165 const struct nfs4_lookup_arg *args = data;
2166 struct compound_hdr hdr = {
2167 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2168 };
2169
2170 encode_compound_hdr(xdr, req, &hdr);
2171 encode_sequence(xdr, &args->seq_args, &hdr);
2172 encode_putfh(xdr, args->dir_fh, &hdr);
2173 encode_lookup(xdr, args->name, &hdr);
2174 encode_getfh(xdr, &hdr);
2175 encode_getfattr(xdr, args->bitmask, &hdr);
2176 encode_nops(&hdr);
2177 }
2178
2179 /*
2180 * Encode LOOKUPP request
2181 */
nfs4_xdr_enc_lookupp(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2182 static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr,
2183 const void *data)
2184 {
2185 const struct nfs4_lookupp_arg *args = data;
2186 struct compound_hdr hdr = {
2187 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2188 };
2189
2190 encode_compound_hdr(xdr, req, &hdr);
2191 encode_sequence(xdr, &args->seq_args, &hdr);
2192 encode_putfh(xdr, args->fh, &hdr);
2193 encode_lookupp(xdr, &hdr);
2194 encode_getfh(xdr, &hdr);
2195 encode_getfattr(xdr, args->bitmask, &hdr);
2196 encode_nops(&hdr);
2197 }
2198
2199 /*
2200 * Encode LOOKUP_ROOT request
2201 */
nfs4_xdr_enc_lookup_root(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2202 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2203 struct xdr_stream *xdr,
2204 const void *data)
2205 {
2206 const struct nfs4_lookup_root_arg *args = data;
2207 struct compound_hdr hdr = {
2208 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2209 };
2210
2211 encode_compound_hdr(xdr, req, &hdr);
2212 encode_sequence(xdr, &args->seq_args, &hdr);
2213 encode_putrootfh(xdr, &hdr);
2214 encode_getfh(xdr, &hdr);
2215 encode_getfattr(xdr, args->bitmask, &hdr);
2216 encode_nops(&hdr);
2217 }
2218
2219 /*
2220 * Encode REMOVE request
2221 */
nfs4_xdr_enc_remove(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2222 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2223 const void *data)
2224 {
2225 const struct nfs_removeargs *args = data;
2226 struct compound_hdr hdr = {
2227 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2228 };
2229
2230 encode_compound_hdr(xdr, req, &hdr);
2231 encode_sequence(xdr, &args->seq_args, &hdr);
2232 encode_putfh(xdr, args->fh, &hdr);
2233 encode_remove(xdr, &args->name, &hdr);
2234 encode_nops(&hdr);
2235 }
2236
2237 /*
2238 * Encode RENAME request
2239 */
nfs4_xdr_enc_rename(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2240 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2241 const void *data)
2242 {
2243 const struct nfs_renameargs *args = data;
2244 struct compound_hdr hdr = {
2245 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2246 };
2247
2248 encode_compound_hdr(xdr, req, &hdr);
2249 encode_sequence(xdr, &args->seq_args, &hdr);
2250 encode_putfh(xdr, args->old_dir, &hdr);
2251 encode_savefh(xdr, &hdr);
2252 encode_putfh(xdr, args->new_dir, &hdr);
2253 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2254 encode_nops(&hdr);
2255 }
2256
2257 /*
2258 * Encode LINK request
2259 */
nfs4_xdr_enc_link(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2260 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2261 const void *data)
2262 {
2263 const struct nfs4_link_arg *args = data;
2264 struct compound_hdr hdr = {
2265 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2266 };
2267
2268 encode_compound_hdr(xdr, req, &hdr);
2269 encode_sequence(xdr, &args->seq_args, &hdr);
2270 encode_putfh(xdr, args->fh, &hdr);
2271 encode_savefh(xdr, &hdr);
2272 encode_putfh(xdr, args->dir_fh, &hdr);
2273 encode_link(xdr, args->name, &hdr);
2274 encode_restorefh(xdr, &hdr);
2275 encode_getfattr(xdr, args->bitmask, &hdr);
2276 encode_nops(&hdr);
2277 }
2278
2279 /*
2280 * Encode CREATE request
2281 */
nfs4_xdr_enc_create(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2282 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2283 const void *data)
2284 {
2285 const struct nfs4_create_arg *args = data;
2286 struct compound_hdr hdr = {
2287 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2288 };
2289
2290 encode_compound_hdr(xdr, req, &hdr);
2291 encode_sequence(xdr, &args->seq_args, &hdr);
2292 encode_putfh(xdr, args->dir_fh, &hdr);
2293 encode_create(xdr, args, &hdr);
2294 encode_getfh(xdr, &hdr);
2295 encode_getfattr(xdr, args->bitmask, &hdr);
2296 encode_nops(&hdr);
2297 }
2298
2299 /*
2300 * Encode SYMLINK request
2301 */
nfs4_xdr_enc_symlink(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2302 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2303 const void *data)
2304 {
2305 const struct nfs4_create_arg *args = data;
2306
2307 nfs4_xdr_enc_create(req, xdr, args);
2308 }
2309
2310 /*
2311 * Encode GETATTR request
2312 */
nfs4_xdr_enc_getattr(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2313 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2314 const void *data)
2315 {
2316 const struct nfs4_getattr_arg *args = data;
2317 struct compound_hdr hdr = {
2318 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2319 };
2320
2321 encode_compound_hdr(xdr, req, &hdr);
2322 encode_sequence(xdr, &args->seq_args, &hdr);
2323 encode_putfh(xdr, args->fh, &hdr);
2324 encode_getfattr(xdr, args->bitmask, &hdr);
2325 encode_nops(&hdr);
2326 }
2327
2328 /*
2329 * Encode a CLOSE request
2330 */
nfs4_xdr_enc_close(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2331 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2332 const void *data)
2333 {
2334 const struct nfs_closeargs *args = data;
2335 struct compound_hdr hdr = {
2336 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2337 };
2338
2339 encode_compound_hdr(xdr, req, &hdr);
2340 encode_sequence(xdr, &args->seq_args, &hdr);
2341 encode_putfh(xdr, args->fh, &hdr);
2342 if (args->lr_args)
2343 encode_layoutreturn(xdr, args->lr_args, &hdr);
2344 if (args->bitmask != NULL)
2345 encode_getfattr(xdr, args->bitmask, &hdr);
2346 encode_close(xdr, args, &hdr);
2347 encode_nops(&hdr);
2348 }
2349
2350 /*
2351 * Encode an OPEN request
2352 */
nfs4_xdr_enc_open(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2353 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2354 const void *data)
2355 {
2356 const struct nfs_openargs *args = data;
2357 struct compound_hdr hdr = {
2358 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2359 };
2360
2361 encode_compound_hdr(xdr, req, &hdr);
2362 encode_sequence(xdr, &args->seq_args, &hdr);
2363 encode_putfh(xdr, args->fh, &hdr);
2364 encode_open(xdr, args, &hdr);
2365 encode_getfh(xdr, &hdr);
2366 if (args->access)
2367 encode_access(xdr, args->access, &hdr);
2368 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2369 if (args->lg_args) {
2370 encode_layoutget(xdr, args->lg_args, &hdr);
2371 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2372 args->lg_args->layout.pglen,
2373 hdr.replen - pagepad_maxsz);
2374 }
2375 encode_nops(&hdr);
2376 }
2377
2378 /*
2379 * Encode an OPEN_CONFIRM request
2380 */
nfs4_xdr_enc_open_confirm(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2381 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2382 struct xdr_stream *xdr,
2383 const void *data)
2384 {
2385 const struct nfs_open_confirmargs *args = data;
2386 struct compound_hdr hdr = {
2387 .nops = 0,
2388 };
2389
2390 encode_compound_hdr(xdr, req, &hdr);
2391 encode_putfh(xdr, args->fh, &hdr);
2392 encode_open_confirm(xdr, args, &hdr);
2393 encode_nops(&hdr);
2394 }
2395
2396 /*
2397 * Encode an OPEN request with no attributes.
2398 */
nfs4_xdr_enc_open_noattr(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2399 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2400 struct xdr_stream *xdr,
2401 const void *data)
2402 {
2403 const struct nfs_openargs *args = data;
2404 struct compound_hdr hdr = {
2405 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2406 };
2407
2408 encode_compound_hdr(xdr, req, &hdr);
2409 encode_sequence(xdr, &args->seq_args, &hdr);
2410 encode_putfh(xdr, args->fh, &hdr);
2411 encode_open(xdr, args, &hdr);
2412 if (args->access)
2413 encode_access(xdr, args->access, &hdr);
2414 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2415 if (args->lg_args) {
2416 encode_layoutget(xdr, args->lg_args, &hdr);
2417 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2418 args->lg_args->layout.pglen,
2419 hdr.replen - pagepad_maxsz);
2420 }
2421 encode_nops(&hdr);
2422 }
2423
2424 /*
2425 * Encode an OPEN_DOWNGRADE request
2426 */
nfs4_xdr_enc_open_downgrade(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2427 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2428 struct xdr_stream *xdr,
2429 const void *data)
2430 {
2431 const struct nfs_closeargs *args = data;
2432 struct compound_hdr hdr = {
2433 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2434 };
2435
2436 encode_compound_hdr(xdr, req, &hdr);
2437 encode_sequence(xdr, &args->seq_args, &hdr);
2438 encode_putfh(xdr, args->fh, &hdr);
2439 if (args->lr_args)
2440 encode_layoutreturn(xdr, args->lr_args, &hdr);
2441 encode_open_downgrade(xdr, args, &hdr);
2442 encode_nops(&hdr);
2443 }
2444
2445 /*
2446 * Encode a LOCK request
2447 */
nfs4_xdr_enc_lock(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2448 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2449 const void *data)
2450 {
2451 const struct nfs_lock_args *args = data;
2452 struct compound_hdr hdr = {
2453 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2454 };
2455
2456 encode_compound_hdr(xdr, req, &hdr);
2457 encode_sequence(xdr, &args->seq_args, &hdr);
2458 encode_putfh(xdr, args->fh, &hdr);
2459 encode_lock(xdr, args, &hdr);
2460 encode_nops(&hdr);
2461 }
2462
2463 /*
2464 * Encode a LOCKT request
2465 */
nfs4_xdr_enc_lockt(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2466 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2467 const void *data)
2468 {
2469 const struct nfs_lockt_args *args = data;
2470 struct compound_hdr hdr = {
2471 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2472 };
2473
2474 encode_compound_hdr(xdr, req, &hdr);
2475 encode_sequence(xdr, &args->seq_args, &hdr);
2476 encode_putfh(xdr, args->fh, &hdr);
2477 encode_lockt(xdr, args, &hdr);
2478 encode_nops(&hdr);
2479 }
2480
2481 /*
2482 * Encode a LOCKU request
2483 */
nfs4_xdr_enc_locku(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2484 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2485 const void *data)
2486 {
2487 const struct nfs_locku_args *args = data;
2488 struct compound_hdr hdr = {
2489 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2490 };
2491
2492 encode_compound_hdr(xdr, req, &hdr);
2493 encode_sequence(xdr, &args->seq_args, &hdr);
2494 encode_putfh(xdr, args->fh, &hdr);
2495 encode_locku(xdr, args, &hdr);
2496 encode_nops(&hdr);
2497 }
2498
nfs4_xdr_enc_release_lockowner(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2499 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2500 struct xdr_stream *xdr,
2501 const void *data)
2502 {
2503 const struct nfs_release_lockowner_args *args = data;
2504 struct compound_hdr hdr = {
2505 .minorversion = 0,
2506 };
2507
2508 encode_compound_hdr(xdr, req, &hdr);
2509 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2510 encode_nops(&hdr);
2511 }
2512
2513 /*
2514 * Encode a READLINK request
2515 */
nfs4_xdr_enc_readlink(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2516 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2517 const void *data)
2518 {
2519 const struct nfs4_readlink *args = data;
2520 struct compound_hdr hdr = {
2521 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2522 };
2523
2524 encode_compound_hdr(xdr, req, &hdr);
2525 encode_sequence(xdr, &args->seq_args, &hdr);
2526 encode_putfh(xdr, args->fh, &hdr);
2527 encode_readlink(xdr, args, req, &hdr);
2528
2529 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2530 args->pglen, hdr.replen - pagepad_maxsz);
2531 encode_nops(&hdr);
2532 }
2533
2534 /*
2535 * Encode a READDIR request
2536 */
nfs4_xdr_enc_readdir(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2537 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2538 const void *data)
2539 {
2540 const struct nfs4_readdir_arg *args = data;
2541 struct compound_hdr hdr = {
2542 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2543 };
2544
2545 encode_compound_hdr(xdr, req, &hdr);
2546 encode_sequence(xdr, &args->seq_args, &hdr);
2547 encode_putfh(xdr, args->fh, &hdr);
2548 encode_readdir(xdr, args, req, &hdr);
2549
2550 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2551 args->count, hdr.replen - pagepad_maxsz);
2552 encode_nops(&hdr);
2553 }
2554
2555 /*
2556 * Encode a READ request
2557 */
nfs4_xdr_enc_read(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2558 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2559 const void *data)
2560 {
2561 const struct nfs_pgio_args *args = data;
2562 struct compound_hdr hdr = {
2563 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2564 };
2565
2566 encode_compound_hdr(xdr, req, &hdr);
2567 encode_sequence(xdr, &args->seq_args, &hdr);
2568 encode_putfh(xdr, args->fh, &hdr);
2569 encode_read(xdr, args, &hdr);
2570
2571 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2572 args->count, hdr.replen - pagepad_maxsz);
2573 req->rq_rcv_buf.flags |= XDRBUF_READ;
2574 encode_nops(&hdr);
2575 }
2576
2577 /*
2578 * Encode an SETATTR request
2579 */
nfs4_xdr_enc_setattr(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2580 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2581 const void *data)
2582 {
2583 const struct nfs_setattrargs *args = data;
2584 struct compound_hdr hdr = {
2585 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2586 };
2587
2588 encode_compound_hdr(xdr, req, &hdr);
2589 encode_sequence(xdr, &args->seq_args, &hdr);
2590 encode_putfh(xdr, args->fh, &hdr);
2591 encode_setattr(xdr, args, args->server, &hdr);
2592 encode_getfattr(xdr, args->bitmask, &hdr);
2593 encode_nops(&hdr);
2594 }
2595
2596 /*
2597 * Encode a GETACL request
2598 */
nfs4_xdr_enc_getacl(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2599 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2600 const void *data)
2601 {
2602 const struct nfs_getaclargs *args = data;
2603 struct compound_hdr hdr = {
2604 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2605 };
2606 __u32 nfs4_acl_bitmap[2];
2607 uint32_t replen;
2608
2609 nfs4_acltype_to_bitmap(args->acl_type, nfs4_acl_bitmap);
2610
2611 encode_compound_hdr(xdr, req, &hdr);
2612 encode_sequence(xdr, &args->seq_args, &hdr);
2613 encode_putfh(xdr, args->fh, &hdr);
2614 replen = hdr.replen + op_decode_hdr_maxsz;
2615 encode_getattr(xdr, nfs4_acl_bitmap, NULL,
2616 ARRAY_SIZE(nfs4_acl_bitmap), &hdr);
2617
2618 rpc_prepare_reply_pages(req, args->acl_pages, 0,
2619 args->acl_len, replen);
2620 encode_nops(&hdr);
2621 }
2622
2623 /*
2624 * Encode a WRITE request
2625 */
nfs4_xdr_enc_write(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2626 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2627 const void *data)
2628 {
2629 const struct nfs_pgio_args *args = data;
2630 struct compound_hdr hdr = {
2631 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2632 };
2633
2634 encode_compound_hdr(xdr, req, &hdr);
2635 encode_sequence(xdr, &args->seq_args, &hdr);
2636 encode_putfh(xdr, args->fh, &hdr);
2637 encode_write(xdr, args, &hdr);
2638 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2639 if (args->bitmask)
2640 encode_getfattr(xdr, args->bitmask, &hdr);
2641 encode_nops(&hdr);
2642 }
2643
2644 /*
2645 * a COMMIT request
2646 */
nfs4_xdr_enc_commit(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2647 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2648 const void *data)
2649 {
2650 const struct nfs_commitargs *args = data;
2651 struct compound_hdr hdr = {
2652 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2653 };
2654
2655 encode_compound_hdr(xdr, req, &hdr);
2656 encode_sequence(xdr, &args->seq_args, &hdr);
2657 encode_putfh(xdr, args->fh, &hdr);
2658 encode_commit(xdr, args, &hdr);
2659 encode_nops(&hdr);
2660 }
2661
2662 /*
2663 * FSINFO request
2664 */
nfs4_xdr_enc_fsinfo(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2665 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2666 const void *data)
2667 {
2668 const struct nfs4_fsinfo_arg *args = data;
2669 struct compound_hdr hdr = {
2670 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2671 };
2672
2673 encode_compound_hdr(xdr, req, &hdr);
2674 encode_sequence(xdr, &args->seq_args, &hdr);
2675 encode_putfh(xdr, args->fh, &hdr);
2676 encode_fsinfo(xdr, args->bitmask, &hdr);
2677 encode_nops(&hdr);
2678 }
2679
2680 /*
2681 * a PATHCONF request
2682 */
nfs4_xdr_enc_pathconf(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2683 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2684 const void *data)
2685 {
2686 const struct nfs4_pathconf_arg *args = data;
2687 struct compound_hdr hdr = {
2688 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2689 };
2690
2691 encode_compound_hdr(xdr, req, &hdr);
2692 encode_sequence(xdr, &args->seq_args, &hdr);
2693 encode_putfh(xdr, args->fh, &hdr);
2694 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask,
2695 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr);
2696 encode_nops(&hdr);
2697 }
2698
2699 /*
2700 * a STATFS request
2701 */
nfs4_xdr_enc_statfs(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2702 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2703 const void *data)
2704 {
2705 const struct nfs4_statfs_arg *args = data;
2706 struct compound_hdr hdr = {
2707 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2708 };
2709
2710 encode_compound_hdr(xdr, req, &hdr);
2711 encode_sequence(xdr, &args->seq_args, &hdr);
2712 encode_putfh(xdr, args->fh, &hdr);
2713 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask,
2714 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr);
2715 encode_nops(&hdr);
2716 }
2717
2718 /*
2719 * GETATTR_BITMAP request
2720 */
nfs4_xdr_enc_server_caps(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2721 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2722 struct xdr_stream *xdr,
2723 const void *data)
2724 {
2725 const struct nfs4_server_caps_arg *args = data;
2726 const u32 *bitmask = args->bitmask;
2727 struct compound_hdr hdr = {
2728 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2729 };
2730
2731 encode_compound_hdr(xdr, req, &hdr);
2732 encode_sequence(xdr, &args->seq_args, &hdr);
2733 encode_putfh(xdr, args->fhandle, &hdr);
2734 encode_getattr(xdr, bitmask, NULL, 3, &hdr);
2735 encode_nops(&hdr);
2736 }
2737
2738 /*
2739 * a RENEW request
2740 */
nfs4_xdr_enc_renew(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2741 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2742 const void *data)
2743
2744 {
2745 const struct nfs_client *clp = data;
2746 struct compound_hdr hdr = {
2747 .nops = 0,
2748 };
2749
2750 encode_compound_hdr(xdr, req, &hdr);
2751 encode_renew(xdr, clp->cl_clientid, &hdr);
2752 encode_nops(&hdr);
2753 }
2754
2755 /*
2756 * a SETCLIENTID request
2757 */
nfs4_xdr_enc_setclientid(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2758 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2759 struct xdr_stream *xdr,
2760 const void *data)
2761 {
2762 const struct nfs4_setclientid *sc = data;
2763 struct compound_hdr hdr = {
2764 .nops = 0,
2765 };
2766
2767 encode_compound_hdr(xdr, req, &hdr);
2768 encode_setclientid(xdr, sc, &hdr);
2769 encode_nops(&hdr);
2770 }
2771
2772 /*
2773 * a SETCLIENTID_CONFIRM request
2774 */
nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2775 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2776 struct xdr_stream *xdr,
2777 const void *data)
2778 {
2779 const struct nfs4_setclientid_res *arg = data;
2780 struct compound_hdr hdr = {
2781 .nops = 0,
2782 };
2783
2784 encode_compound_hdr(xdr, req, &hdr);
2785 encode_setclientid_confirm(xdr, arg, &hdr);
2786 encode_nops(&hdr);
2787 }
2788
2789 /*
2790 * DELEGRETURN request
2791 */
nfs4_xdr_enc_delegreturn(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2792 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2793 struct xdr_stream *xdr,
2794 const void *data)
2795 {
2796 const struct nfs4_delegreturnargs *args = data;
2797 struct compound_hdr hdr = {
2798 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2799 };
2800
2801 encode_compound_hdr(xdr, req, &hdr);
2802 encode_sequence(xdr, &args->seq_args, &hdr);
2803 encode_putfh(xdr, args->fhandle, &hdr);
2804 if (args->lr_args)
2805 encode_layoutreturn(xdr, args->lr_args, &hdr);
2806 if (args->bitmask)
2807 encode_getfattr(xdr, args->bitmask, &hdr);
2808 encode_delegreturn(xdr, args->stateid, &hdr);
2809 encode_nops(&hdr);
2810 }
2811
2812 /*
2813 * Encode FS_LOCATIONS request
2814 */
nfs4_xdr_enc_fs_locations(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2815 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2816 struct xdr_stream *xdr,
2817 const void *data)
2818 {
2819 const struct nfs4_fs_locations_arg *args = data;
2820 struct compound_hdr hdr = {
2821 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2822 };
2823 uint32_t replen;
2824
2825 encode_compound_hdr(xdr, req, &hdr);
2826 encode_sequence(xdr, &args->seq_args, &hdr);
2827 if (args->migration) {
2828 encode_putfh(xdr, args->fh, &hdr);
2829 replen = hdr.replen;
2830 encode_fs_locations(xdr, args->bitmask, &hdr);
2831 if (args->renew)
2832 encode_renew(xdr, args->clientid, &hdr);
2833 } else {
2834 encode_putfh(xdr, args->dir_fh, &hdr);
2835 encode_lookup(xdr, args->name, &hdr);
2836 replen = hdr.replen;
2837 encode_fs_locations(xdr, args->bitmask, &hdr);
2838 }
2839
2840 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0,
2841 PAGE_SIZE, replen);
2842 encode_nops(&hdr);
2843 }
2844
2845 /*
2846 * Encode SECINFO request
2847 */
nfs4_xdr_enc_secinfo(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2848 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2849 struct xdr_stream *xdr,
2850 const void *data)
2851 {
2852 const struct nfs4_secinfo_arg *args = data;
2853 struct compound_hdr hdr = {
2854 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2855 };
2856
2857 encode_compound_hdr(xdr, req, &hdr);
2858 encode_sequence(xdr, &args->seq_args, &hdr);
2859 encode_putfh(xdr, args->dir_fh, &hdr);
2860 encode_secinfo(xdr, args->name, &hdr);
2861 encode_nops(&hdr);
2862 }
2863
2864 /*
2865 * Encode FSID_PRESENT request
2866 */
nfs4_xdr_enc_fsid_present(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2867 static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2868 struct xdr_stream *xdr,
2869 const void *data)
2870 {
2871 const struct nfs4_fsid_present_arg *args = data;
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_putfh(xdr, args->fh, &hdr);
2879 encode_getfh(xdr, &hdr);
2880 if (args->renew)
2881 encode_renew(xdr, args->clientid, &hdr);
2882 encode_nops(&hdr);
2883 }
2884
2885 #if defined(CONFIG_NFS_V4_1)
2886 /*
2887 * BIND_CONN_TO_SESSION request
2888 */
nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2889 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2890 struct xdr_stream *xdr,
2891 const void *data)
2892 {
2893 const struct nfs41_bind_conn_to_session_args *args = data;
2894 struct compound_hdr hdr = {
2895 .minorversion = args->client->cl_mvops->minor_version,
2896 };
2897
2898 encode_compound_hdr(xdr, req, &hdr);
2899 encode_bind_conn_to_session(xdr, args, &hdr);
2900 encode_nops(&hdr);
2901 }
2902
2903 /*
2904 * EXCHANGE_ID request
2905 */
nfs4_xdr_enc_exchange_id(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2906 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2907 struct xdr_stream *xdr,
2908 const void *data)
2909 {
2910 const struct nfs41_exchange_id_args *args = data;
2911 struct compound_hdr hdr = {
2912 .minorversion = args->client->cl_mvops->minor_version,
2913 };
2914
2915 encode_compound_hdr(xdr, req, &hdr);
2916 encode_exchange_id(xdr, args, &hdr);
2917 encode_nops(&hdr);
2918 }
2919
2920 /*
2921 * a CREATE_SESSION request
2922 */
nfs4_xdr_enc_create_session(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2923 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2924 struct xdr_stream *xdr,
2925 const void *data)
2926 {
2927 const struct nfs41_create_session_args *args = data;
2928 struct compound_hdr hdr = {
2929 .minorversion = args->client->cl_mvops->minor_version,
2930 };
2931
2932 encode_compound_hdr(xdr, req, &hdr);
2933 encode_create_session(xdr, args, &hdr);
2934 encode_nops(&hdr);
2935 }
2936
2937 /*
2938 * a DESTROY_SESSION request
2939 */
nfs4_xdr_enc_destroy_session(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2940 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2941 struct xdr_stream *xdr,
2942 const void *data)
2943 {
2944 const struct nfs4_session *session = data;
2945 struct compound_hdr hdr = {
2946 .minorversion = session->clp->cl_mvops->minor_version,
2947 };
2948
2949 encode_compound_hdr(xdr, req, &hdr);
2950 encode_destroy_session(xdr, session, &hdr);
2951 encode_nops(&hdr);
2952 }
2953
2954 /*
2955 * a DESTROY_CLIENTID request
2956 */
nfs4_xdr_enc_destroy_clientid(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2957 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2958 struct xdr_stream *xdr,
2959 const void *data)
2960 {
2961 const struct nfs_client *clp = data;
2962 struct compound_hdr hdr = {
2963 .minorversion = clp->cl_mvops->minor_version,
2964 };
2965
2966 encode_compound_hdr(xdr, req, &hdr);
2967 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2968 encode_nops(&hdr);
2969 }
2970
2971 /*
2972 * a SEQUENCE request
2973 */
nfs4_xdr_enc_sequence(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2974 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2975 const void *data)
2976 {
2977 const struct nfs4_sequence_args *args = data;
2978 struct compound_hdr hdr = {
2979 .minorversion = nfs4_xdr_minorversion(args),
2980 };
2981
2982 encode_compound_hdr(xdr, req, &hdr);
2983 encode_sequence(xdr, args, &hdr);
2984 encode_nops(&hdr);
2985 }
2986
2987 #endif
2988
2989 /*
2990 * a GET_LEASE_TIME request
2991 */
nfs4_xdr_enc_get_lease_time(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)2992 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2993 struct xdr_stream *xdr,
2994 const void *data)
2995 {
2996 const struct nfs4_get_lease_time_args *args = data;
2997 struct compound_hdr hdr = {
2998 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2999 };
3000 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
3001
3002 encode_compound_hdr(xdr, req, &hdr);
3003 encode_sequence(xdr, &args->la_seq_args, &hdr);
3004 encode_putrootfh(xdr, &hdr);
3005 encode_fsinfo(xdr, lease_bitmap, &hdr);
3006 encode_nops(&hdr);
3007 }
3008
3009 #ifdef CONFIG_NFS_V4_1
3010
3011 /*
3012 * a RECLAIM_COMPLETE request
3013 */
nfs4_xdr_enc_reclaim_complete(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)3014 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
3015 struct xdr_stream *xdr,
3016 const void *data)
3017 {
3018 const struct nfs41_reclaim_complete_args *args = data;
3019 struct compound_hdr hdr = {
3020 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
3021 };
3022
3023 encode_compound_hdr(xdr, req, &hdr);
3024 encode_sequence(xdr, &args->seq_args, &hdr);
3025 encode_reclaim_complete(xdr, args, &hdr);
3026 encode_nops(&hdr);
3027 }
3028
3029 /*
3030 * Encode GETDEVICEINFO request
3031 */
nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)3032 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
3033 struct xdr_stream *xdr,
3034 const void *data)
3035 {
3036 const struct nfs4_getdeviceinfo_args *args = data;
3037 struct compound_hdr hdr = {
3038 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3039 };
3040 uint32_t replen;
3041
3042 encode_compound_hdr(xdr, req, &hdr);
3043 encode_sequence(xdr, &args->seq_args, &hdr);
3044
3045 replen = hdr.replen + op_decode_hdr_maxsz + 2;
3046
3047 encode_getdeviceinfo(xdr, args, &hdr);
3048
3049 /* set up reply kvec. device_addr4 opaque data is read into the
3050 * pages */
3051 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase,
3052 args->pdev->pglen, replen);
3053 encode_nops(&hdr);
3054 }
3055
3056 /*
3057 * Encode LAYOUTGET request
3058 */
nfs4_xdr_enc_layoutget(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)3059 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
3060 struct xdr_stream *xdr,
3061 const void *data)
3062 {
3063 const struct nfs4_layoutget_args *args = data;
3064 struct compound_hdr hdr = {
3065 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3066 };
3067
3068 encode_compound_hdr(xdr, req, &hdr);
3069 encode_sequence(xdr, &args->seq_args, &hdr);
3070 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3071 encode_layoutget(xdr, args, &hdr);
3072
3073 rpc_prepare_reply_pages(req, args->layout.pages, 0,
3074 args->layout.pglen, hdr.replen - pagepad_maxsz);
3075 encode_nops(&hdr);
3076 }
3077
3078 /*
3079 * Encode LAYOUTCOMMIT request
3080 */
nfs4_xdr_enc_layoutcommit(struct rpc_rqst * req,struct xdr_stream * xdr,const void * priv)3081 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
3082 struct xdr_stream *xdr,
3083 const void *priv)
3084 {
3085 const struct nfs4_layoutcommit_args *args = priv;
3086 struct nfs4_layoutcommit_data *data =
3087 container_of(args, struct nfs4_layoutcommit_data, args);
3088 struct compound_hdr hdr = {
3089 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3090 };
3091
3092 encode_compound_hdr(xdr, req, &hdr);
3093 encode_sequence(xdr, &args->seq_args, &hdr);
3094 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3095 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
3096 encode_getfattr(xdr, args->bitmask, &hdr);
3097 encode_nops(&hdr);
3098 }
3099
3100 /*
3101 * Encode LAYOUTRETURN request
3102 */
nfs4_xdr_enc_layoutreturn(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)3103 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
3104 struct xdr_stream *xdr,
3105 const void *data)
3106 {
3107 const struct nfs4_layoutreturn_args *args = data;
3108 struct compound_hdr hdr = {
3109 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3110 };
3111
3112 encode_compound_hdr(xdr, req, &hdr);
3113 encode_sequence(xdr, &args->seq_args, &hdr);
3114 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3115 encode_layoutreturn(xdr, args, &hdr);
3116 encode_nops(&hdr);
3117 }
3118
3119 /*
3120 * Encode SECINFO_NO_NAME request
3121 */
nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)3122 static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3123 struct xdr_stream *xdr,
3124 const void *data)
3125 {
3126 const struct nfs41_secinfo_no_name_args *args = data;
3127 struct compound_hdr hdr = {
3128 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3129 };
3130
3131 encode_compound_hdr(xdr, req, &hdr);
3132 encode_sequence(xdr, &args->seq_args, &hdr);
3133 encode_putrootfh(xdr, &hdr);
3134 encode_secinfo_no_name(xdr, args, &hdr);
3135 encode_nops(&hdr);
3136 }
3137
3138 /*
3139 * Encode TEST_STATEID request
3140 */
nfs4_xdr_enc_test_stateid(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)3141 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3142 struct xdr_stream *xdr,
3143 const void *data)
3144 {
3145 const struct nfs41_test_stateid_args *args = data;
3146 struct compound_hdr hdr = {
3147 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3148 };
3149
3150 encode_compound_hdr(xdr, req, &hdr);
3151 encode_sequence(xdr, &args->seq_args, &hdr);
3152 encode_test_stateid(xdr, args, &hdr);
3153 encode_nops(&hdr);
3154 }
3155
3156 /*
3157 * Encode FREE_STATEID request
3158 */
nfs4_xdr_enc_free_stateid(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)3159 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3160 struct xdr_stream *xdr,
3161 const void *data)
3162 {
3163 const struct nfs41_free_stateid_args *args = data;
3164 struct compound_hdr hdr = {
3165 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3166 };
3167
3168 encode_compound_hdr(xdr, req, &hdr);
3169 encode_sequence(xdr, &args->seq_args, &hdr);
3170 encode_free_stateid(xdr, args, &hdr);
3171 encode_nops(&hdr);
3172 }
3173 #endif /* CONFIG_NFS_V4_1 */
3174
decode_opaque_inline(struct xdr_stream * xdr,unsigned int * len,char ** string)3175 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3176 {
3177 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string,
3178 NFS4_OPAQUE_LIMIT);
3179 if (unlikely(ret < 0))
3180 return -EIO;
3181 *len = ret;
3182 return 0;
3183 }
3184
decode_compound_hdr(struct xdr_stream * xdr,struct compound_hdr * hdr)3185 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3186 {
3187 ssize_t ret;
3188 void *ptr;
3189 u32 tmp;
3190
3191 if (xdr_stream_decode_u32(xdr, &tmp) < 0)
3192 return -EIO;
3193 hdr->status = tmp;
3194
3195 ret = xdr_stream_decode_opaque_inline(xdr, &ptr, NFS4_OPAQUE_LIMIT);
3196 if (ret < 0)
3197 return -EIO;
3198 hdr->taglen = ret;
3199 hdr->tag = ptr;
3200
3201 if (xdr_stream_decode_u32(xdr, &tmp) < 0)
3202 return -EIO;
3203 hdr->nops = tmp;
3204 if (unlikely(hdr->nops < 1))
3205 return nfs4_stat_to_errno(hdr->status);
3206 return 0;
3207 }
3208
__decode_op_hdr(struct xdr_stream * xdr,enum nfs_opnum4 expected,int * nfs_retval)3209 static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3210 int *nfs_retval)
3211 {
3212 __be32 *p;
3213 uint32_t opnum;
3214 int32_t nfserr;
3215
3216 p = xdr_inline_decode(xdr, 8);
3217 if (unlikely(!p))
3218 goto out_overflow;
3219 opnum = be32_to_cpup(p++);
3220 if (unlikely(opnum != expected))
3221 goto out_bad_operation;
3222 if (unlikely(*p != cpu_to_be32(NFS_OK)))
3223 goto out_status;
3224 *nfs_retval = 0;
3225 return true;
3226 out_status:
3227 nfserr = be32_to_cpup(p);
3228 trace_nfs4_xdr_status(xdr, opnum, nfserr);
3229 *nfs_retval = nfs4_stat_to_errno(nfserr);
3230 return true;
3231 out_bad_operation:
3232 trace_nfs4_xdr_bad_operation(xdr, opnum, expected);
3233 *nfs_retval = -EREMOTEIO;
3234 return false;
3235 out_overflow:
3236 *nfs_retval = -EIO;
3237 return false;
3238 }
3239
decode_op_hdr(struct xdr_stream * xdr,enum nfs_opnum4 expected)3240 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3241 {
3242 int retval;
3243
3244 __decode_op_hdr(xdr, expected, &retval);
3245 return retval;
3246 }
3247
3248 /* Dummy routine */
decode_ace(struct xdr_stream * xdr,void * ace)3249 static int decode_ace(struct xdr_stream *xdr, void *ace)
3250 {
3251 __be32 *p;
3252 unsigned int strlen;
3253 char *str;
3254
3255 p = xdr_inline_decode(xdr, 12);
3256 if (unlikely(!p))
3257 return -EIO;
3258 return decode_opaque_inline(xdr, &strlen, &str);
3259 }
3260
3261 static ssize_t
decode_bitmap4(struct xdr_stream * xdr,uint32_t * bitmap,size_t sz)3262 decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz)
3263 {
3264 ssize_t ret;
3265
3266 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz);
3267 if (likely(ret >= 0))
3268 return ret;
3269 if (ret != -EMSGSIZE)
3270 return -EIO;
3271 return sz;
3272 }
3273
decode_attr_bitmap(struct xdr_stream * xdr,uint32_t * bitmap)3274 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3275 {
3276 ssize_t ret;
3277 ret = decode_bitmap4(xdr, bitmap, 3);
3278 return ret < 0 ? ret : 0;
3279 }
3280
decode_attr_length(struct xdr_stream * xdr,uint32_t * attrlen,unsigned int * savep)3281 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3282 {
3283 __be32 *p;
3284
3285 p = xdr_inline_decode(xdr, 4);
3286 if (unlikely(!p))
3287 return -EIO;
3288 *attrlen = be32_to_cpup(p);
3289 *savep = xdr_stream_pos(xdr);
3290 return 0;
3291 }
3292
decode_attr_supported(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * bitmask)3293 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3294 {
3295 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3296 int ret;
3297 ret = decode_attr_bitmap(xdr, bitmask);
3298 if (unlikely(ret < 0))
3299 return ret;
3300 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3301 } else
3302 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3303 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3304 bitmask[0], bitmask[1], bitmask[2]);
3305 return 0;
3306 }
3307
decode_attr_type(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * type)3308 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3309 {
3310 __be32 *p;
3311 int ret = 0;
3312
3313 *type = 0;
3314 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3315 return -EIO;
3316 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3317 p = xdr_inline_decode(xdr, 4);
3318 if (unlikely(!p))
3319 return -EIO;
3320 *type = be32_to_cpup(p);
3321 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3322 dprintk("%s: bad type %d\n", __func__, *type);
3323 return -EIO;
3324 }
3325 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3326 ret = NFS_ATTR_FATTR_TYPE;
3327 }
3328 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3329 return ret;
3330 }
3331
decode_attr_fh_expire_type(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * type)3332 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3333 uint32_t *bitmap, uint32_t *type)
3334 {
3335 __be32 *p;
3336
3337 *type = 0;
3338 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3339 return -EIO;
3340 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3341 p = xdr_inline_decode(xdr, 4);
3342 if (unlikely(!p))
3343 return -EIO;
3344 *type = be32_to_cpup(p);
3345 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3346 }
3347 dprintk("%s: expire type=0x%x\n", __func__, *type);
3348 return 0;
3349 }
3350
decode_attr_change(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * change)3351 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3352 {
3353 __be32 *p;
3354 int ret = 0;
3355
3356 *change = 0;
3357 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3358 return -EIO;
3359 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3360 p = xdr_inline_decode(xdr, 8);
3361 if (unlikely(!p))
3362 return -EIO;
3363 xdr_decode_hyper(p, change);
3364 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3365 ret = NFS_ATTR_FATTR_CHANGE;
3366 }
3367 dprintk("%s: change attribute=%Lu\n", __func__,
3368 (unsigned long long)*change);
3369 return ret;
3370 }
3371
decode_attr_size(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * size)3372 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3373 {
3374 __be32 *p;
3375 int ret = 0;
3376
3377 *size = 0;
3378 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3379 return -EIO;
3380 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3381 p = xdr_inline_decode(xdr, 8);
3382 if (unlikely(!p))
3383 return -EIO;
3384 xdr_decode_hyper(p, size);
3385 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3386 ret = NFS_ATTR_FATTR_SIZE;
3387 }
3388 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3389 return ret;
3390 }
3391
decode_attr_link_support(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)3392 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3393 {
3394 __be32 *p;
3395
3396 *res = 0;
3397 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3398 return -EIO;
3399 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3400 p = xdr_inline_decode(xdr, 4);
3401 if (unlikely(!p))
3402 return -EIO;
3403 *res = be32_to_cpup(p);
3404 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3405 }
3406 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3407 return 0;
3408 }
3409
decode_attr_symlink_support(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)3410 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3411 {
3412 __be32 *p;
3413
3414 *res = 0;
3415 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3416 return -EIO;
3417 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3418 p = xdr_inline_decode(xdr, 4);
3419 if (unlikely(!p))
3420 return -EIO;
3421 *res = be32_to_cpup(p);
3422 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3423 }
3424 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3425 return 0;
3426 }
3427
decode_attr_fsid(struct xdr_stream * xdr,uint32_t * bitmap,struct nfs_fsid * fsid)3428 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3429 {
3430 __be32 *p;
3431 int ret = 0;
3432
3433 fsid->major = 0;
3434 fsid->minor = 0;
3435 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3436 return -EIO;
3437 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3438 p = xdr_inline_decode(xdr, 16);
3439 if (unlikely(!p))
3440 return -EIO;
3441 p = xdr_decode_hyper(p, &fsid->major);
3442 xdr_decode_hyper(p, &fsid->minor);
3443 bitmap[0] &= ~FATTR4_WORD0_FSID;
3444 ret = NFS_ATTR_FATTR_FSID;
3445 }
3446 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3447 (unsigned long long)fsid->major,
3448 (unsigned long long)fsid->minor);
3449 return ret;
3450 }
3451
decode_attr_lease_time(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)3452 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3453 {
3454 __be32 *p;
3455
3456 *res = 60;
3457 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3458 return -EIO;
3459 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3460 p = xdr_inline_decode(xdr, 4);
3461 if (unlikely(!p))
3462 return -EIO;
3463 *res = be32_to_cpup(p);
3464 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3465 }
3466 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res);
3467 return 0;
3468 }
3469
decode_attr_error(struct xdr_stream * xdr,uint32_t * bitmap,int32_t * res)3470 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3471 {
3472 __be32 *p;
3473
3474 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3475 return -EIO;
3476 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3477 p = xdr_inline_decode(xdr, 4);
3478 if (unlikely(!p))
3479 return -EIO;
3480 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3481 *res = -be32_to_cpup(p);
3482 }
3483 return 0;
3484 }
3485
decode_attr_exclcreat_supported(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * bitmask)3486 static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3487 uint32_t *bitmap, uint32_t *bitmask)
3488 {
3489 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3490 int ret;
3491 ret = decode_attr_bitmap(xdr, bitmask);
3492 if (unlikely(ret < 0))
3493 return ret;
3494 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3495 } else
3496 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3497 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3498 bitmask[0], bitmask[1], bitmask[2]);
3499 return 0;
3500 }
3501
decode_attr_filehandle(struct xdr_stream * xdr,uint32_t * bitmap,struct nfs_fh * fh)3502 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3503 {
3504 __be32 *p;
3505 u32 len;
3506
3507 if (fh != NULL)
3508 memset(fh, 0, sizeof(*fh));
3509
3510 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3511 return -EIO;
3512 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3513 p = xdr_inline_decode(xdr, 4);
3514 if (unlikely(!p))
3515 return -EIO;
3516 len = be32_to_cpup(p);
3517 if (len > NFS4_FHSIZE || len == 0) {
3518 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR,
3519 NFS4ERR_BADHANDLE);
3520 return -EREMOTEIO;
3521 }
3522 p = xdr_inline_decode(xdr, len);
3523 if (unlikely(!p))
3524 return -EIO;
3525 if (fh != NULL) {
3526 memcpy(fh->data, p, len);
3527 fh->size = len;
3528 }
3529 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3530 }
3531 return 0;
3532 }
3533
decode_attr_aclsupport(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)3534 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3535 {
3536 __be32 *p;
3537
3538 *res = 0;
3539 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3540 return -EIO;
3541 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3542 p = xdr_inline_decode(xdr, 4);
3543 if (unlikely(!p))
3544 return -EIO;
3545 *res = be32_to_cpup(p);
3546 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3547 }
3548 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3549 return 0;
3550 }
3551
decode_attr_case_insensitive(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)3552 static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3553 {
3554 __be32 *p;
3555
3556 *res = 0;
3557 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_INSENSITIVE - 1U)))
3558 return -EIO;
3559 if (likely(bitmap[0] & FATTR4_WORD0_CASE_INSENSITIVE)) {
3560 p = xdr_inline_decode(xdr, 4);
3561 if (unlikely(!p))
3562 return -EIO;
3563 *res = be32_to_cpup(p);
3564 bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE;
3565 }
3566 dprintk("%s: case_insensitive=%s\n", __func__, *res == 0 ? "false" : "true");
3567 return 0;
3568 }
3569
decode_attr_case_preserving(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)3570 static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3571 {
3572 __be32 *p;
3573
3574 *res = 0;
3575 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_PRESERVING - 1U)))
3576 return -EIO;
3577 if (likely(bitmap[0] & FATTR4_WORD0_CASE_PRESERVING)) {
3578 p = xdr_inline_decode(xdr, 4);
3579 if (unlikely(!p))
3580 return -EIO;
3581 *res = be32_to_cpup(p);
3582 bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING;
3583 }
3584 dprintk("%s: case_preserving=%s\n", __func__, *res == 0 ? "false" : "true");
3585 return 0;
3586 }
3587
decode_attr_fileid(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * fileid)3588 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3589 {
3590 __be32 *p;
3591 int ret = 0;
3592
3593 *fileid = 0;
3594 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3595 return -EIO;
3596 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3597 p = xdr_inline_decode(xdr, 8);
3598 if (unlikely(!p))
3599 return -EIO;
3600 xdr_decode_hyper(p, fileid);
3601 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3602 ret = NFS_ATTR_FATTR_FILEID;
3603 }
3604 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3605 return ret;
3606 }
3607
decode_attr_mounted_on_fileid(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * fileid)3608 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3609 {
3610 __be32 *p;
3611 int ret = 0;
3612
3613 *fileid = 0;
3614 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3615 return -EIO;
3616 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3617 p = xdr_inline_decode(xdr, 8);
3618 if (unlikely(!p))
3619 return -EIO;
3620 xdr_decode_hyper(p, fileid);
3621 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3622 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3623 }
3624 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3625 return ret;
3626 }
3627
decode_attr_files_avail(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * res)3628 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3629 {
3630 __be32 *p;
3631 int status = 0;
3632
3633 *res = 0;
3634 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3635 return -EIO;
3636 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3637 p = xdr_inline_decode(xdr, 8);
3638 if (unlikely(!p))
3639 return -EIO;
3640 xdr_decode_hyper(p, res);
3641 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3642 }
3643 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3644 return status;
3645 }
3646
decode_attr_files_free(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * res)3647 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3648 {
3649 __be32 *p;
3650 int status = 0;
3651
3652 *res = 0;
3653 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3654 return -EIO;
3655 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3656 p = xdr_inline_decode(xdr, 8);
3657 if (unlikely(!p))
3658 return -EIO;
3659 xdr_decode_hyper(p, res);
3660 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3661 }
3662 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3663 return status;
3664 }
3665
decode_attr_files_total(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * res)3666 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3667 {
3668 __be32 *p;
3669 int status = 0;
3670
3671 *res = 0;
3672 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3673 return -EIO;
3674 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3675 p = xdr_inline_decode(xdr, 8);
3676 if (unlikely(!p))
3677 return -EIO;
3678 xdr_decode_hyper(p, res);
3679 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3680 }
3681 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3682 return status;
3683 }
3684
decode_pathname(struct xdr_stream * xdr,struct nfs4_pathname * path)3685 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3686 {
3687 u32 n;
3688 __be32 *p;
3689 int status = 0;
3690
3691 p = xdr_inline_decode(xdr, 4);
3692 if (unlikely(!p))
3693 return -EIO;
3694 n = be32_to_cpup(p);
3695 if (n == 0)
3696 goto root_path;
3697 dprintk("pathname4: ");
3698 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3699 dprintk("cannot parse %d components in path\n", n);
3700 goto out_eio;
3701 }
3702 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3703 struct nfs4_string *component = &path->components[path->ncomponents];
3704 status = decode_opaque_inline(xdr, &component->len, &component->data);
3705 if (unlikely(status != 0))
3706 goto out_eio;
3707 ifdebug (XDR)
3708 pr_cont("%s%.*s ",
3709 (path->ncomponents != n ? "/ " : ""),
3710 component->len, component->data);
3711 }
3712 out:
3713 return status;
3714 root_path:
3715 /* a root pathname is sent as a zero component4 */
3716 path->ncomponents = 1;
3717 path->components[0].len=0;
3718 path->components[0].data=NULL;
3719 dprintk("pathname4: /\n");
3720 goto out;
3721 out_eio:
3722 dprintk(" status %d", status);
3723 status = -EIO;
3724 goto out;
3725 }
3726
decode_attr_fs_locations(struct xdr_stream * xdr,uint32_t * bitmap,struct nfs4_fs_locations * res)3727 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3728 {
3729 int n;
3730 __be32 *p;
3731 int status = -EIO;
3732
3733 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3734 goto out;
3735 status = 0;
3736 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3737 goto out;
3738 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3739 status = -EIO;
3740 /* Ignore borken servers that return unrequested attrs */
3741 if (unlikely(res == NULL))
3742 goto out;
3743 dprintk("%s: fsroot:\n", __func__);
3744 status = decode_pathname(xdr, &res->fs_path);
3745 if (unlikely(status != 0))
3746 goto out;
3747 p = xdr_inline_decode(xdr, 4);
3748 if (unlikely(!p))
3749 goto out_eio;
3750 n = be32_to_cpup(p);
3751 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3752 u32 m;
3753 struct nfs4_fs_location *loc;
3754
3755 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3756 break;
3757 loc = &res->locations[res->nlocations];
3758 p = xdr_inline_decode(xdr, 4);
3759 if (unlikely(!p))
3760 goto out_eio;
3761 m = be32_to_cpup(p);
3762
3763 dprintk("%s: servers:\n", __func__);
3764 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3765 struct nfs4_string *server;
3766
3767 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3768 unsigned int i;
3769 dprintk("%s: using first %u of %u servers "
3770 "returned for location %u\n",
3771 __func__,
3772 NFS4_FS_LOCATION_MAXSERVERS,
3773 m, res->nlocations);
3774 for (i = loc->nservers; i < m; i++) {
3775 unsigned int len;
3776 char *data;
3777 status = decode_opaque_inline(xdr, &len, &data);
3778 if (unlikely(status != 0))
3779 goto out_eio;
3780 }
3781 break;
3782 }
3783 server = &loc->servers[loc->nservers];
3784 status = decode_opaque_inline(xdr, &server->len, &server->data);
3785 if (unlikely(status != 0))
3786 goto out_eio;
3787 dprintk("%s ", server->data);
3788 }
3789 status = decode_pathname(xdr, &loc->rootpath);
3790 if (unlikely(status != 0))
3791 goto out_eio;
3792 }
3793 if (res->nlocations != 0)
3794 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3795 out:
3796 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3797 return status;
3798 out_eio:
3799 status = -EIO;
3800 goto out;
3801 }
3802
decode_attr_maxfilesize(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * res)3803 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3804 {
3805 __be32 *p;
3806 int status = 0;
3807
3808 *res = 0;
3809 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3810 return -EIO;
3811 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3812 p = xdr_inline_decode(xdr, 8);
3813 if (unlikely(!p))
3814 return -EIO;
3815 xdr_decode_hyper(p, res);
3816 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3817 }
3818 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3819 return status;
3820 }
3821
decode_attr_maxlink(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * maxlink)3822 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3823 {
3824 __be32 *p;
3825 int status = 0;
3826
3827 *maxlink = 1;
3828 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3829 return -EIO;
3830 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3831 p = xdr_inline_decode(xdr, 4);
3832 if (unlikely(!p))
3833 return -EIO;
3834 *maxlink = be32_to_cpup(p);
3835 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3836 }
3837 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3838 return status;
3839 }
3840
decode_attr_maxname(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * maxname)3841 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3842 {
3843 __be32 *p;
3844 int status = 0;
3845
3846 *maxname = 1024;
3847 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3848 return -EIO;
3849 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3850 p = xdr_inline_decode(xdr, 4);
3851 if (unlikely(!p))
3852 return -EIO;
3853 *maxname = be32_to_cpup(p);
3854 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3855 }
3856 dprintk("%s: maxname=%u\n", __func__, *maxname);
3857 return status;
3858 }
3859
decode_attr_maxread(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)3860 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3861 {
3862 __be32 *p;
3863 int status = 0;
3864
3865 *res = 1024;
3866 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3867 return -EIO;
3868 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3869 uint64_t maxread;
3870 p = xdr_inline_decode(xdr, 8);
3871 if (unlikely(!p))
3872 return -EIO;
3873 xdr_decode_hyper(p, &maxread);
3874 if (maxread > 0x7FFFFFFF)
3875 maxread = 0x7FFFFFFF;
3876 *res = (uint32_t)maxread;
3877 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3878 }
3879 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3880 return status;
3881 }
3882
decode_attr_maxwrite(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)3883 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3884 {
3885 __be32 *p;
3886 int status = 0;
3887
3888 *res = 1024;
3889 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3890 return -EIO;
3891 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3892 uint64_t maxwrite;
3893 p = xdr_inline_decode(xdr, 8);
3894 if (unlikely(!p))
3895 return -EIO;
3896 xdr_decode_hyper(p, &maxwrite);
3897 if (maxwrite > 0x7FFFFFFF)
3898 maxwrite = 0x7FFFFFFF;
3899 *res = (uint32_t)maxwrite;
3900 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3901 }
3902 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3903 return status;
3904 }
3905
decode_attr_mode(struct xdr_stream * xdr,uint32_t * bitmap,umode_t * mode)3906 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3907 {
3908 uint32_t tmp;
3909 __be32 *p;
3910 int ret = 0;
3911
3912 *mode = 0;
3913 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3914 return -EIO;
3915 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3916 p = xdr_inline_decode(xdr, 4);
3917 if (unlikely(!p))
3918 return -EIO;
3919 tmp = be32_to_cpup(p);
3920 *mode = tmp & ~S_IFMT;
3921 bitmap[1] &= ~FATTR4_WORD1_MODE;
3922 ret = NFS_ATTR_FATTR_MODE;
3923 }
3924 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3925 return ret;
3926 }
3927
decode_attr_nlink(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * nlink)3928 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3929 {
3930 __be32 *p;
3931 int ret = 0;
3932
3933 *nlink = 1;
3934 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3935 return -EIO;
3936 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3937 p = xdr_inline_decode(xdr, 4);
3938 if (unlikely(!p))
3939 return -EIO;
3940 *nlink = be32_to_cpup(p);
3941 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3942 ret = NFS_ATTR_FATTR_NLINK;
3943 }
3944 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3945 return ret;
3946 }
3947
decode_nfs4_string(struct xdr_stream * xdr,struct nfs4_string * name,gfp_t gfp_flags)3948 static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3949 struct nfs4_string *name, gfp_t gfp_flags)
3950 {
3951 ssize_t ret;
3952
3953 ret = xdr_stream_decode_string_dup(xdr, &name->data,
3954 XDR_MAX_NETOBJ, gfp_flags);
3955 name->len = 0;
3956 if (ret > 0)
3957 name->len = ret;
3958 return ret;
3959 }
3960
decode_attr_owner(struct xdr_stream * xdr,uint32_t * bitmap,const struct nfs_server * server,kuid_t * uid,struct nfs4_string * owner_name)3961 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3962 const struct nfs_server *server, kuid_t *uid,
3963 struct nfs4_string *owner_name)
3964 {
3965 ssize_t len;
3966 char *p;
3967
3968 *uid = make_kuid(&init_user_ns, -2);
3969 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3970 return -EIO;
3971 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
3972 return 0;
3973 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3974
3975 if (owner_name != NULL) {
3976 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO);
3977 if (len <= 0)
3978 goto out;
3979 dprintk("%s: name=%s\n", __func__, owner_name->data);
3980 return NFS_ATTR_FATTR_OWNER_NAME;
3981 } else {
3982 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3983 XDR_MAX_NETOBJ);
3984 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
3985 goto out;
3986 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3987 return NFS_ATTR_FATTR_OWNER;
3988 }
3989 out:
3990 if (len == -EBADMSG)
3991 return -EIO;
3992 return 0;
3993 }
3994
decode_attr_group(struct xdr_stream * xdr,uint32_t * bitmap,const struct nfs_server * server,kgid_t * gid,struct nfs4_string * group_name)3995 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3996 const struct nfs_server *server, kgid_t *gid,
3997 struct nfs4_string *group_name)
3998 {
3999 ssize_t len;
4000 char *p;
4001
4002 *gid = make_kgid(&init_user_ns, -2);
4003 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
4004 return -EIO;
4005 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
4006 return 0;
4007 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
4008
4009 if (group_name != NULL) {
4010 len = decode_nfs4_string(xdr, group_name, GFP_NOIO);
4011 if (len <= 0)
4012 goto out;
4013 dprintk("%s: name=%s\n", __func__, group_name->data);
4014 return NFS_ATTR_FATTR_GROUP_NAME;
4015 } else {
4016 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
4017 XDR_MAX_NETOBJ);
4018 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
4019 goto out;
4020 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
4021 return NFS_ATTR_FATTR_GROUP;
4022 }
4023 out:
4024 if (len == -EBADMSG)
4025 return -EIO;
4026 return 0;
4027 }
4028
decode_attr_rdev(struct xdr_stream * xdr,uint32_t * bitmap,dev_t * rdev)4029 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
4030 {
4031 uint32_t major = 0, minor = 0;
4032 __be32 *p;
4033 int ret = 0;
4034
4035 *rdev = MKDEV(0,0);
4036 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
4037 return -EIO;
4038 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
4039 dev_t tmp;
4040
4041 p = xdr_inline_decode(xdr, 8);
4042 if (unlikely(!p))
4043 return -EIO;
4044 major = be32_to_cpup(p++);
4045 minor = be32_to_cpup(p);
4046 tmp = MKDEV(major, minor);
4047 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
4048 *rdev = tmp;
4049 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
4050 ret = NFS_ATTR_FATTR_RDEV;
4051 }
4052 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4053 return ret;
4054 }
4055
decode_attr_space_avail(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * res)4056 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4057 {
4058 __be32 *p;
4059 int status = 0;
4060
4061 *res = 0;
4062 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4063 return -EIO;
4064 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4065 p = xdr_inline_decode(xdr, 8);
4066 if (unlikely(!p))
4067 return -EIO;
4068 xdr_decode_hyper(p, res);
4069 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4070 }
4071 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4072 return status;
4073 }
4074
decode_attr_space_free(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * res)4075 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4076 {
4077 __be32 *p;
4078 int status = 0;
4079
4080 *res = 0;
4081 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4082 return -EIO;
4083 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4084 p = xdr_inline_decode(xdr, 8);
4085 if (unlikely(!p))
4086 return -EIO;
4087 xdr_decode_hyper(p, res);
4088 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4089 }
4090 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4091 return status;
4092 }
4093
decode_attr_space_total(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * res)4094 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4095 {
4096 __be32 *p;
4097 int status = 0;
4098
4099 *res = 0;
4100 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4101 return -EIO;
4102 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4103 p = xdr_inline_decode(xdr, 8);
4104 if (unlikely(!p))
4105 return -EIO;
4106 xdr_decode_hyper(p, res);
4107 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4108 }
4109 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4110 return status;
4111 }
4112
decode_attr_space_used(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * used)4113 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4114 {
4115 __be32 *p;
4116 int ret = 0;
4117
4118 *used = 0;
4119 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4120 return -EIO;
4121 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4122 p = xdr_inline_decode(xdr, 8);
4123 if (unlikely(!p))
4124 return -EIO;
4125 xdr_decode_hyper(p, used);
4126 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4127 ret = NFS_ATTR_FATTR_SPACE_USED;
4128 }
4129 dprintk("%s: space used=%Lu\n", __func__,
4130 (unsigned long long)*used);
4131 return ret;
4132 }
4133
4134 static __be32 *
xdr_decode_nfstime4(__be32 * p,struct timespec64 * t)4135 xdr_decode_nfstime4(__be32 *p, struct timespec64 *t)
4136 {
4137 __u64 sec;
4138
4139 p = xdr_decode_hyper(p, &sec);
4140 t-> tv_sec = sec;
4141 t->tv_nsec = be32_to_cpup(p++);
4142 return p;
4143 }
4144
decode_attr_time(struct xdr_stream * xdr,struct timespec64 * time)4145 static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time)
4146 {
4147 __be32 *p;
4148
4149 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2);
4150 if (unlikely(!p))
4151 return -EIO;
4152 xdr_decode_nfstime4(p, time);
4153 return 0;
4154 }
4155
decode_attr_time_access(struct xdr_stream * xdr,uint32_t * bitmap,struct timespec64 * time)4156 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4157 {
4158 int status = 0;
4159
4160 time->tv_sec = 0;
4161 time->tv_nsec = 0;
4162 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4163 return -EIO;
4164 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4165 status = decode_attr_time(xdr, time);
4166 if (status == 0)
4167 status = NFS_ATTR_FATTR_ATIME;
4168 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4169 }
4170 dprintk("%s: atime=%lld\n", __func__, time->tv_sec);
4171 return status;
4172 }
4173
decode_attr_time_metadata(struct xdr_stream * xdr,uint32_t * bitmap,struct timespec64 * time)4174 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4175 {
4176 int status = 0;
4177
4178 time->tv_sec = 0;
4179 time->tv_nsec = 0;
4180 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4181 return -EIO;
4182 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4183 status = decode_attr_time(xdr, time);
4184 if (status == 0)
4185 status = NFS_ATTR_FATTR_CTIME;
4186 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4187 }
4188 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec);
4189 return status;
4190 }
4191
decode_attr_time_delta(struct xdr_stream * xdr,uint32_t * bitmap,struct timespec64 * time)4192 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4193 struct timespec64 *time)
4194 {
4195 int status = 0;
4196
4197 time->tv_sec = 0;
4198 time->tv_nsec = 0;
4199 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4200 return -EIO;
4201 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4202 status = decode_attr_time(xdr, time);
4203 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4204 }
4205 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec,
4206 time->tv_nsec);
4207 return status;
4208 }
4209
decode_attr_security_label(struct xdr_stream * xdr,uint32_t * bitmap,struct nfs4_label * label)4210 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4211 struct nfs4_label *label)
4212 {
4213 uint32_t pi = 0;
4214 uint32_t lfs = 0;
4215 __u32 len;
4216 __be32 *p;
4217 int status = 0;
4218
4219 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4220 return -EIO;
4221 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4222 p = xdr_inline_decode(xdr, 4);
4223 if (unlikely(!p))
4224 return -EIO;
4225 lfs = be32_to_cpup(p++);
4226 p = xdr_inline_decode(xdr, 4);
4227 if (unlikely(!p))
4228 return -EIO;
4229 pi = be32_to_cpup(p++);
4230 p = xdr_inline_decode(xdr, 4);
4231 if (unlikely(!p))
4232 return -EIO;
4233 len = be32_to_cpup(p++);
4234 p = xdr_inline_decode(xdr, len);
4235 if (unlikely(!p))
4236 return -EIO;
4237 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4238 if (len < NFS4_MAXLABELLEN) {
4239 if (label && label->len) {
4240 if (label->len < len)
4241 return -ERANGE;
4242 memcpy(label->label, p, len);
4243 label->len = len;
4244 label->pi = pi;
4245 label->lfs = lfs;
4246 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4247 }
4248 } else
4249 printk(KERN_WARNING "%s: label too long (%u)!\n",
4250 __func__, len);
4251 if (label && label->label)
4252 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n",
4253 __func__, label->len, (char *)label->label,
4254 label->len, label->pi, label->lfs);
4255 }
4256 return status;
4257 }
4258
decode_attr_time_modify(struct xdr_stream * xdr,uint32_t * bitmap,struct timespec64 * time)4259 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4260 {
4261 int status = 0;
4262
4263 time->tv_sec = 0;
4264 time->tv_nsec = 0;
4265 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4266 return -EIO;
4267 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4268 status = decode_attr_time(xdr, time);
4269 if (status == 0)
4270 status = NFS_ATTR_FATTR_MTIME;
4271 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4272 }
4273 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec);
4274 return status;
4275 }
4276
decode_attr_xattrsupport(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)4277 static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
4278 uint32_t *res)
4279 {
4280 __be32 *p;
4281
4282 *res = 0;
4283 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U)))
4284 return -EIO;
4285 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) {
4286 p = xdr_inline_decode(xdr, 4);
4287 if (unlikely(!p))
4288 return -EIO;
4289 *res = be32_to_cpup(p);
4290 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
4291 }
4292 dprintk("%s: XATTR support=%s\n", __func__,
4293 *res == 0 ? "false" : "true");
4294 return 0;
4295 }
4296
verify_attr_len(struct xdr_stream * xdr,unsigned int savep,uint32_t attrlen)4297 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4298 {
4299 unsigned int attrwords = XDR_QUADLEN(attrlen);
4300 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4301
4302 if (unlikely(attrwords != nwords)) {
4303 dprintk("%s: server returned incorrect attribute length: "
4304 "%u %c %u\n",
4305 __func__,
4306 attrwords << 2,
4307 (attrwords < nwords) ? '<' : '>',
4308 nwords << 2);
4309 return -EIO;
4310 }
4311 return 0;
4312 }
4313
decode_change_info(struct xdr_stream * xdr,struct nfs4_change_info * cinfo)4314 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4315 {
4316 __be32 *p;
4317
4318 p = xdr_inline_decode(xdr, 20);
4319 if (unlikely(!p))
4320 return -EIO;
4321 cinfo->atomic = be32_to_cpup(p++);
4322 p = xdr_decode_hyper(p, &cinfo->before);
4323 xdr_decode_hyper(p, &cinfo->after);
4324 return 0;
4325 }
4326
decode_access(struct xdr_stream * xdr,u32 * supported,u32 * access)4327 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4328 {
4329 __be32 *p;
4330 uint32_t supp, acc;
4331 int status;
4332
4333 status = decode_op_hdr(xdr, OP_ACCESS);
4334 if (status)
4335 return status;
4336 p = xdr_inline_decode(xdr, 8);
4337 if (unlikely(!p))
4338 return -EIO;
4339 supp = be32_to_cpup(p++);
4340 acc = be32_to_cpup(p);
4341 *supported = supp;
4342 *access = acc;
4343 return 0;
4344 }
4345
decode_opaque_fixed(struct xdr_stream * xdr,void * buf,size_t len)4346 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4347 {
4348 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
4349 if (unlikely(ret < 0))
4350 return -EIO;
4351 return 0;
4352 }
4353
decode_stateid(struct xdr_stream * xdr,nfs4_stateid * stateid)4354 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4355 {
4356 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4357 }
4358
decode_open_stateid(struct xdr_stream * xdr,nfs4_stateid * stateid)4359 static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4360 {
4361 stateid->type = NFS4_OPEN_STATEID_TYPE;
4362 return decode_stateid(xdr, stateid);
4363 }
4364
decode_lock_stateid(struct xdr_stream * xdr,nfs4_stateid * stateid)4365 static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4366 {
4367 stateid->type = NFS4_LOCK_STATEID_TYPE;
4368 return decode_stateid(xdr, stateid);
4369 }
4370
decode_delegation_stateid(struct xdr_stream * xdr,nfs4_stateid * stateid)4371 static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4372 {
4373 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4374 return decode_stateid(xdr, stateid);
4375 }
4376
decode_invalid_stateid(struct xdr_stream * xdr,nfs4_stateid * stateid)4377 static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4378 {
4379 nfs4_stateid dummy;
4380
4381 nfs4_stateid_copy(stateid, &invalid_stateid);
4382 return decode_stateid(xdr, &dummy);
4383 }
4384
decode_close(struct xdr_stream * xdr,struct nfs_closeres * res)4385 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4386 {
4387 int status;
4388
4389 status = decode_op_hdr(xdr, OP_CLOSE);
4390 if (status != -EIO)
4391 nfs_increment_open_seqid(status, res->seqid);
4392 if (!status)
4393 status = decode_invalid_stateid(xdr, &res->stateid);
4394 return status;
4395 }
4396
decode_verifier(struct xdr_stream * xdr,void * verifier)4397 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4398 {
4399 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4400 }
4401
decode_write_verifier(struct xdr_stream * xdr,struct nfs_write_verifier * verifier)4402 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4403 {
4404 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4405 }
4406
decode_commit(struct xdr_stream * xdr,struct nfs_commitres * res)4407 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4408 {
4409 struct nfs_writeverf *verf = res->verf;
4410 int status;
4411
4412 status = decode_op_hdr(xdr, OP_COMMIT);
4413 if (!status)
4414 status = decode_write_verifier(xdr, &verf->verifier);
4415 if (!status)
4416 verf->committed = NFS_FILE_SYNC;
4417 return status;
4418 }
4419
decode_create(struct xdr_stream * xdr,struct nfs4_change_info * cinfo)4420 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4421 {
4422 __be32 *p;
4423 uint32_t bmlen;
4424 int status;
4425
4426 status = decode_op_hdr(xdr, OP_CREATE);
4427 if (status)
4428 return status;
4429 if ((status = decode_change_info(xdr, cinfo)))
4430 return status;
4431 p = xdr_inline_decode(xdr, 4);
4432 if (unlikely(!p))
4433 return -EIO;
4434 bmlen = be32_to_cpup(p);
4435 p = xdr_inline_decode(xdr, bmlen << 2);
4436 if (likely(p))
4437 return 0;
4438 return -EIO;
4439 }
4440
decode_server_caps(struct xdr_stream * xdr,struct nfs4_server_caps_res * res)4441 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4442 {
4443 unsigned int savep;
4444 uint32_t attrlen, bitmap[3] = {0};
4445 int status;
4446
4447 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4448 goto xdr_error;
4449 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4450 goto xdr_error;
4451 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4452 goto xdr_error;
4453 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4454 goto xdr_error;
4455 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4456 &res->fh_expire_type)) != 0)
4457 goto xdr_error;
4458 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4459 goto xdr_error;
4460 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4461 goto xdr_error;
4462 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4463 goto xdr_error;
4464 if ((status = decode_attr_case_insensitive(xdr, bitmap, &res->case_insensitive)) != 0)
4465 goto xdr_error;
4466 if ((status = decode_attr_case_preserving(xdr, bitmap, &res->case_preserving)) != 0)
4467 goto xdr_error;
4468 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4469 res->exclcreat_bitmask)) != 0)
4470 goto xdr_error;
4471 status = verify_attr_len(xdr, savep, attrlen);
4472 xdr_error:
4473 dprintk("%s: xdr returned %d!\n", __func__, -status);
4474 return status;
4475 }
4476
decode_statfs(struct xdr_stream * xdr,struct nfs_fsstat * fsstat)4477 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4478 {
4479 unsigned int savep;
4480 uint32_t attrlen, bitmap[3] = {0};
4481 int status;
4482
4483 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4484 goto xdr_error;
4485 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4486 goto xdr_error;
4487 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4488 goto xdr_error;
4489
4490 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4491 goto xdr_error;
4492 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4493 goto xdr_error;
4494 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4495 goto xdr_error;
4496
4497 status = -EIO;
4498 if (unlikely(bitmap[0]))
4499 goto xdr_error;
4500
4501 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4502 goto xdr_error;
4503 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4504 goto xdr_error;
4505 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4506 goto xdr_error;
4507
4508 status = verify_attr_len(xdr, savep, attrlen);
4509 xdr_error:
4510 dprintk("%s: xdr returned %d!\n", __func__, -status);
4511 return status;
4512 }
4513
decode_pathconf(struct xdr_stream * xdr,struct nfs_pathconf * pathconf)4514 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4515 {
4516 unsigned int savep;
4517 uint32_t attrlen, bitmap[3] = {0};
4518 int status;
4519
4520 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4521 goto xdr_error;
4522 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4523 goto xdr_error;
4524 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4525 goto xdr_error;
4526
4527 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4528 goto xdr_error;
4529 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4530 goto xdr_error;
4531
4532 status = verify_attr_len(xdr, savep, attrlen);
4533 xdr_error:
4534 dprintk("%s: xdr returned %d!\n", __func__, -status);
4535 return status;
4536 }
4537
decode_threshold_hint(struct xdr_stream * xdr,uint32_t * bitmap,uint64_t * res,uint32_t hint_bit)4538 static int decode_threshold_hint(struct xdr_stream *xdr,
4539 uint32_t *bitmap,
4540 uint64_t *res,
4541 uint32_t hint_bit)
4542 {
4543 __be32 *p;
4544
4545 *res = 0;
4546 if (likely(bitmap[0] & hint_bit)) {
4547 p = xdr_inline_decode(xdr, 8);
4548 if (unlikely(!p))
4549 return -EIO;
4550 xdr_decode_hyper(p, res);
4551 }
4552 return 0;
4553 }
4554
decode_first_threshold_item4(struct xdr_stream * xdr,struct nfs4_threshold * res)4555 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4556 struct nfs4_threshold *res)
4557 {
4558 __be32 *p;
4559 unsigned int savep;
4560 uint32_t bitmap[3] = {0,}, attrlen;
4561 int status;
4562
4563 /* layout type */
4564 p = xdr_inline_decode(xdr, 4);
4565 if (unlikely(!p))
4566 return -EIO;
4567 res->l_type = be32_to_cpup(p);
4568
4569 /* thi_hintset bitmap */
4570 status = decode_attr_bitmap(xdr, bitmap);
4571 if (status < 0)
4572 goto xdr_error;
4573
4574 /* thi_hintlist length */
4575 status = decode_attr_length(xdr, &attrlen, &savep);
4576 if (status < 0)
4577 goto xdr_error;
4578 /* thi_hintlist */
4579 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4580 if (status < 0)
4581 goto xdr_error;
4582 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4583 if (status < 0)
4584 goto xdr_error;
4585 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4586 THRESHOLD_RD_IO);
4587 if (status < 0)
4588 goto xdr_error;
4589 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4590 THRESHOLD_WR_IO);
4591 if (status < 0)
4592 goto xdr_error;
4593
4594 status = verify_attr_len(xdr, savep, attrlen);
4595 res->bm = bitmap[0];
4596
4597 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4598 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4599 res->wr_io_sz);
4600 xdr_error:
4601 dprintk("%s ret=%d!\n", __func__, status);
4602 return status;
4603 }
4604
4605 /*
4606 * Thresholds on pNFS direct I/O vrs MDS I/O
4607 */
decode_attr_mdsthreshold(struct xdr_stream * xdr,uint32_t * bitmap,struct nfs4_threshold * res)4608 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4609 uint32_t *bitmap,
4610 struct nfs4_threshold *res)
4611 {
4612 __be32 *p;
4613 int status = 0;
4614 uint32_t num;
4615
4616 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4617 return -EIO;
4618 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4619 /* Did the server return an unrequested attribute? */
4620 if (unlikely(res == NULL))
4621 return -EREMOTEIO;
4622 p = xdr_inline_decode(xdr, 4);
4623 if (unlikely(!p))
4624 return -EIO;
4625 num = be32_to_cpup(p);
4626 if (num == 0)
4627 return 0;
4628 if (num > 1)
4629 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4630 "drivers per filesystem not supported\n",
4631 __func__);
4632
4633 status = decode_first_threshold_item4(xdr, res);
4634 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4635 }
4636 return status;
4637 }
4638
decode_getfattr_attrs(struct xdr_stream * xdr,uint32_t * bitmap,struct nfs_fattr * fattr,struct nfs_fh * fh,struct nfs4_fs_locations * fs_loc,const struct nfs_server * server)4639 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4640 struct nfs_fattr *fattr, struct nfs_fh *fh,
4641 struct nfs4_fs_locations *fs_loc, const struct nfs_server *server)
4642 {
4643 int status;
4644 umode_t fmode = 0;
4645 uint32_t type;
4646 int32_t err;
4647
4648 status = decode_attr_type(xdr, bitmap, &type);
4649 if (status < 0)
4650 goto xdr_error;
4651 fattr->mode = 0;
4652 if (status != 0) {
4653 fattr->mode |= nfs_type2fmt[type];
4654 fattr->valid |= status;
4655 }
4656
4657 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4658 if (status < 0)
4659 goto xdr_error;
4660 fattr->valid |= status;
4661
4662 status = decode_attr_size(xdr, bitmap, &fattr->size);
4663 if (status < 0)
4664 goto xdr_error;
4665 fattr->valid |= status;
4666
4667 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4668 if (status < 0)
4669 goto xdr_error;
4670 fattr->valid |= status;
4671
4672 err = 0;
4673 status = decode_attr_error(xdr, bitmap, &err);
4674 if (status < 0)
4675 goto xdr_error;
4676
4677 status = decode_attr_filehandle(xdr, bitmap, fh);
4678 if (status < 0)
4679 goto xdr_error;
4680
4681 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4682 if (status < 0)
4683 goto xdr_error;
4684 fattr->valid |= status;
4685
4686 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4687 if (status < 0)
4688 goto xdr_error;
4689 fattr->valid |= status;
4690
4691 status = -EIO;
4692 if (unlikely(bitmap[0]))
4693 goto xdr_error;
4694
4695 status = decode_attr_mode(xdr, bitmap, &fmode);
4696 if (status < 0)
4697 goto xdr_error;
4698 if (status != 0) {
4699 fattr->mode |= fmode;
4700 fattr->valid |= status;
4701 }
4702
4703 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4704 if (status < 0)
4705 goto xdr_error;
4706 fattr->valid |= status;
4707
4708 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4709 if (status < 0)
4710 goto xdr_error;
4711 fattr->valid |= status;
4712
4713 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4714 if (status < 0)
4715 goto xdr_error;
4716 fattr->valid |= status;
4717
4718 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4719 if (status < 0)
4720 goto xdr_error;
4721 fattr->valid |= status;
4722
4723 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4724 if (status < 0)
4725 goto xdr_error;
4726 fattr->valid |= status;
4727
4728 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4729 if (status < 0)
4730 goto xdr_error;
4731 fattr->valid |= status;
4732
4733 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4734 if (status < 0)
4735 goto xdr_error;
4736 fattr->valid |= status;
4737
4738 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4739 if (status < 0)
4740 goto xdr_error;
4741 fattr->valid |= status;
4742
4743 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4744 if (status < 0)
4745 goto xdr_error;
4746 fattr->valid |= status;
4747
4748 status = -EIO;
4749 if (unlikely(bitmap[1]))
4750 goto xdr_error;
4751
4752 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4753 if (status < 0)
4754 goto xdr_error;
4755
4756 status = decode_attr_security_label(xdr, bitmap, fattr->label);
4757 if (status < 0)
4758 goto xdr_error;
4759 fattr->valid |= status;
4760
4761 xdr_error:
4762 dprintk("%s: xdr returned %d\n", __func__, -status);
4763 return status;
4764 }
4765
decode_getfattr_generic(struct xdr_stream * xdr,struct nfs_fattr * fattr,struct nfs_fh * fh,struct nfs4_fs_locations * fs_loc,const struct nfs_server * server)4766 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4767 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4768 const struct nfs_server *server)
4769 {
4770 unsigned int savep;
4771 uint32_t attrlen,
4772 bitmap[3] = {0};
4773 int status;
4774
4775 status = decode_op_hdr(xdr, OP_GETATTR);
4776 if (status < 0)
4777 goto xdr_error;
4778
4779 status = decode_attr_bitmap(xdr, bitmap);
4780 if (status < 0)
4781 goto xdr_error;
4782
4783 status = decode_attr_length(xdr, &attrlen, &savep);
4784 if (status < 0)
4785 goto xdr_error;
4786
4787 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4788 if (status < 0)
4789 goto xdr_error;
4790
4791 status = verify_attr_len(xdr, savep, attrlen);
4792 xdr_error:
4793 dprintk("%s: xdr returned %d\n", __func__, -status);
4794 return status;
4795 }
4796
decode_getfattr(struct xdr_stream * xdr,struct nfs_fattr * fattr,const struct nfs_server * server)4797 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4798 const struct nfs_server *server)
4799 {
4800 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4801 }
4802
4803 /*
4804 * Decode potentially multiple layout types.
4805 */
decode_pnfs_layout_types(struct xdr_stream * xdr,struct nfs_fsinfo * fsinfo)4806 static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4807 struct nfs_fsinfo *fsinfo)
4808 {
4809 __be32 *p;
4810 uint32_t i;
4811
4812 p = xdr_inline_decode(xdr, 4);
4813 if (unlikely(!p))
4814 return -EIO;
4815 fsinfo->nlayouttypes = be32_to_cpup(p);
4816
4817 /* pNFS is not supported by the underlying file system */
4818 if (fsinfo->nlayouttypes == 0)
4819 return 0;
4820
4821 /* Decode and set first layout type, move xdr->p past unused types */
4822 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4823 if (unlikely(!p))
4824 return -EIO;
4825
4826 /* If we get too many, then just cap it at the max */
4827 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4828 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4829 __func__, fsinfo->nlayouttypes);
4830 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4831 }
4832
4833 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4834 fsinfo->layouttype[i] = be32_to_cpup(p++);
4835 return 0;
4836 }
4837
4838 /*
4839 * The type of file system exported.
4840 * Note we must ensure that layouttype is set in any non-error case.
4841 */
decode_attr_pnfstype(struct xdr_stream * xdr,uint32_t * bitmap,struct nfs_fsinfo * fsinfo)4842 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4843 struct nfs_fsinfo *fsinfo)
4844 {
4845 int status = 0;
4846
4847 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4848 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4849 return -EIO;
4850 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4851 status = decode_pnfs_layout_types(xdr, fsinfo);
4852 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4853 }
4854 return status;
4855 }
4856
4857 /*
4858 * The prefered block size for layout directed io
4859 */
decode_attr_layout_blksize(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)4860 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4861 uint32_t *res)
4862 {
4863 __be32 *p;
4864
4865 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4866 *res = 0;
4867 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4868 p = xdr_inline_decode(xdr, 4);
4869 if (unlikely(!p))
4870 return -EIO;
4871 *res = be32_to_cpup(p);
4872 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4873 }
4874 return 0;
4875 }
4876
4877 /*
4878 * The granularity of a CLONE operation.
4879 */
decode_attr_clone_blksize(struct xdr_stream * xdr,uint32_t * bitmap,uint32_t * res)4880 static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4881 uint32_t *res)
4882 {
4883 __be32 *p;
4884
4885 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4886 *res = 0;
4887 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4888 p = xdr_inline_decode(xdr, 4);
4889 if (unlikely(!p))
4890 return -EIO;
4891 *res = be32_to_cpup(p);
4892 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4893 }
4894 return 0;
4895 }
4896
decode_attr_change_attr_type(struct xdr_stream * xdr,uint32_t * bitmap,enum nfs4_change_attr_type * res)4897 static int decode_attr_change_attr_type(struct xdr_stream *xdr,
4898 uint32_t *bitmap,
4899 enum nfs4_change_attr_type *res)
4900 {
4901 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4902
4903 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4904 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) {
4905 if (xdr_stream_decode_u32(xdr, &tmp))
4906 return -EIO;
4907 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE;
4908 }
4909
4910 switch(tmp) {
4911 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR:
4912 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER:
4913 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS:
4914 case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
4915 *res = tmp;
4916 break;
4917 default:
4918 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4919 }
4920 return 0;
4921 }
4922
decode_fsinfo(struct xdr_stream * xdr,struct nfs_fsinfo * fsinfo)4923 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4924 {
4925 unsigned int savep;
4926 uint32_t attrlen, bitmap[3];
4927 int status;
4928
4929 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4930 goto xdr_error;
4931 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4932 goto xdr_error;
4933 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4934 goto xdr_error;
4935
4936 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4937
4938 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4939 goto xdr_error;
4940 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4941 goto xdr_error;
4942 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4943 goto xdr_error;
4944 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4945 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4946 goto xdr_error;
4947 fsinfo->wtpref = fsinfo->wtmax;
4948
4949 status = -EIO;
4950 if (unlikely(bitmap[0]))
4951 goto xdr_error;
4952
4953 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4954 if (status != 0)
4955 goto xdr_error;
4956 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4957 if (status != 0)
4958 goto xdr_error;
4959
4960 status = -EIO;
4961 if (unlikely(bitmap[1]))
4962 goto xdr_error;
4963
4964 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4965 if (status)
4966 goto xdr_error;
4967 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4968 if (status)
4969 goto xdr_error;
4970
4971 status = decode_attr_change_attr_type(xdr, bitmap,
4972 &fsinfo->change_attr_type);
4973 if (status)
4974 goto xdr_error;
4975
4976 status = decode_attr_xattrsupport(xdr, bitmap,
4977 &fsinfo->xattr_support);
4978 if (status)
4979 goto xdr_error;
4980
4981 status = verify_attr_len(xdr, savep, attrlen);
4982 xdr_error:
4983 dprintk("%s: xdr returned %d!\n", __func__, -status);
4984 return status;
4985 }
4986
decode_getfh(struct xdr_stream * xdr,struct nfs_fh * fh)4987 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4988 {
4989 __be32 *p;
4990 uint32_t len;
4991 int status;
4992
4993 /* Zero handle first to allow comparisons */
4994 memset(fh, 0, sizeof(*fh));
4995
4996 status = decode_op_hdr(xdr, OP_GETFH);
4997 if (status)
4998 return status;
4999
5000 p = xdr_inline_decode(xdr, 4);
5001 if (unlikely(!p))
5002 return -EIO;
5003 len = be32_to_cpup(p);
5004 if (len > NFS4_FHSIZE || len == 0) {
5005 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE);
5006 return -EREMOTEIO;
5007 }
5008 fh->size = len;
5009 p = xdr_inline_decode(xdr, len);
5010 if (unlikely(!p))
5011 return -EIO;
5012 memcpy(fh->data, p, len);
5013 return 0;
5014 }
5015
decode_link(struct xdr_stream * xdr,struct nfs4_change_info * cinfo)5016 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5017 {
5018 int status;
5019
5020 status = decode_op_hdr(xdr, OP_LINK);
5021 if (status)
5022 return status;
5023 return decode_change_info(xdr, cinfo);
5024 }
5025
5026 /*
5027 * We create the owner, so we know a proper owner.id length is 4.
5028 */
decode_lock_denied(struct xdr_stream * xdr,struct file_lock * fl)5029 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
5030 {
5031 uint64_t offset, length, clientid;
5032 __be32 *p;
5033 uint32_t namelen, type;
5034
5035 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
5036 if (unlikely(!p))
5037 return -EIO;
5038 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
5039 p = xdr_decode_hyper(p, &length);
5040 type = be32_to_cpup(p++); /* 4 byte read */
5041 if (fl != NULL) { /* manipulate file lock */
5042 fl->fl_start = (loff_t)offset;
5043 fl->fl_end = fl->fl_start + (loff_t)length - 1;
5044 if (length == ~(uint64_t)0)
5045 fl->fl_end = OFFSET_MAX;
5046 fl->fl_type = F_WRLCK;
5047 if (type & 1)
5048 fl->fl_type = F_RDLCK;
5049 fl->fl_pid = 0;
5050 }
5051 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
5052 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5053 p = xdr_inline_decode(xdr, namelen); /* variable size field */
5054 if (likely(!p))
5055 return -EIO;
5056 return -NFS4ERR_DENIED;
5057 }
5058
decode_lock(struct xdr_stream * xdr,struct nfs_lock_res * res)5059 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5060 {
5061 int status;
5062
5063 status = decode_op_hdr(xdr, OP_LOCK);
5064 if (status == -EIO)
5065 goto out;
5066 if (status == 0) {
5067 status = decode_lock_stateid(xdr, &res->stateid);
5068 if (unlikely(status))
5069 goto out;
5070 } else if (status == -NFS4ERR_DENIED)
5071 status = decode_lock_denied(xdr, NULL);
5072 if (res->open_seqid != NULL)
5073 nfs_increment_open_seqid(status, res->open_seqid);
5074 nfs_increment_lock_seqid(status, res->lock_seqid);
5075 out:
5076 return status;
5077 }
5078
decode_lockt(struct xdr_stream * xdr,struct nfs_lockt_res * res)5079 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5080 {
5081 int status;
5082 status = decode_op_hdr(xdr, OP_LOCKT);
5083 if (status == -NFS4ERR_DENIED)
5084 return decode_lock_denied(xdr, res->denied);
5085 return status;
5086 }
5087
decode_locku(struct xdr_stream * xdr,struct nfs_locku_res * res)5088 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5089 {
5090 int status;
5091
5092 status = decode_op_hdr(xdr, OP_LOCKU);
5093 if (status != -EIO)
5094 nfs_increment_lock_seqid(status, res->seqid);
5095 if (status == 0)
5096 status = decode_lock_stateid(xdr, &res->stateid);
5097 return status;
5098 }
5099
decode_release_lockowner(struct xdr_stream * xdr)5100 static int decode_release_lockowner(struct xdr_stream *xdr)
5101 {
5102 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5103 }
5104
decode_lookup(struct xdr_stream * xdr)5105 static int decode_lookup(struct xdr_stream *xdr)
5106 {
5107 return decode_op_hdr(xdr, OP_LOOKUP);
5108 }
5109
decode_lookupp(struct xdr_stream * xdr)5110 static int decode_lookupp(struct xdr_stream *xdr)
5111 {
5112 return decode_op_hdr(xdr, OP_LOOKUPP);
5113 }
5114
5115 /* This is too sick! */
decode_space_limit(struct xdr_stream * xdr,unsigned long * pagemod_limit)5116 static int decode_space_limit(struct xdr_stream *xdr,
5117 unsigned long *pagemod_limit)
5118 {
5119 __be32 *p;
5120 uint32_t limit_type, nblocks, blocksize;
5121 u64 maxsize = 0;
5122
5123 p = xdr_inline_decode(xdr, 12);
5124 if (unlikely(!p))
5125 return -EIO;
5126 limit_type = be32_to_cpup(p++);
5127 switch (limit_type) {
5128 case NFS4_LIMIT_SIZE:
5129 xdr_decode_hyper(p, &maxsize);
5130 break;
5131 case NFS4_LIMIT_BLOCKS:
5132 nblocks = be32_to_cpup(p++);
5133 blocksize = be32_to_cpup(p);
5134 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5135 }
5136 maxsize >>= PAGE_SHIFT;
5137 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5138 return 0;
5139 }
5140
decode_rw_delegation(struct xdr_stream * xdr,uint32_t delegation_type,struct nfs_openres * res)5141 static int decode_rw_delegation(struct xdr_stream *xdr,
5142 uint32_t delegation_type,
5143 struct nfs_openres *res)
5144 {
5145 __be32 *p;
5146 int status;
5147
5148 status = decode_delegation_stateid(xdr, &res->delegation);
5149 if (unlikely(status))
5150 return status;
5151 p = xdr_inline_decode(xdr, 4);
5152 if (unlikely(!p))
5153 return -EIO;
5154 res->do_recall = be32_to_cpup(p);
5155
5156 switch (delegation_type) {
5157 case NFS4_OPEN_DELEGATE_READ:
5158 res->delegation_type = FMODE_READ;
5159 break;
5160 case NFS4_OPEN_DELEGATE_WRITE:
5161 res->delegation_type = FMODE_WRITE|FMODE_READ;
5162 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5163 return -EIO;
5164 }
5165 return decode_ace(xdr, NULL);
5166 }
5167
decode_no_delegation(struct xdr_stream * xdr,struct nfs_openres * res)5168 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5169 {
5170 __be32 *p;
5171 uint32_t why_no_delegation;
5172
5173 p = xdr_inline_decode(xdr, 4);
5174 if (unlikely(!p))
5175 return -EIO;
5176 why_no_delegation = be32_to_cpup(p);
5177 switch (why_no_delegation) {
5178 case WND4_CONTENTION:
5179 case WND4_RESOURCE:
5180 xdr_inline_decode(xdr, 4);
5181 /* Ignore for now */
5182 }
5183 return 0;
5184 }
5185
decode_delegation(struct xdr_stream * xdr,struct nfs_openres * res)5186 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5187 {
5188 __be32 *p;
5189 uint32_t delegation_type;
5190
5191 p = xdr_inline_decode(xdr, 4);
5192 if (unlikely(!p))
5193 return -EIO;
5194 delegation_type = be32_to_cpup(p);
5195 res->delegation_type = 0;
5196 switch (delegation_type) {
5197 case NFS4_OPEN_DELEGATE_NONE:
5198 return 0;
5199 case NFS4_OPEN_DELEGATE_READ:
5200 case NFS4_OPEN_DELEGATE_WRITE:
5201 return decode_rw_delegation(xdr, delegation_type, res);
5202 case NFS4_OPEN_DELEGATE_NONE_EXT:
5203 return decode_no_delegation(xdr, res);
5204 }
5205 return -EIO;
5206 }
5207
decode_open(struct xdr_stream * xdr,struct nfs_openres * res)5208 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5209 {
5210 __be32 *p;
5211 uint32_t savewords, bmlen, i;
5212 int status;
5213
5214 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5215 return status;
5216 nfs_increment_open_seqid(status, res->seqid);
5217 if (status)
5218 return status;
5219 status = decode_open_stateid(xdr, &res->stateid);
5220 if (unlikely(status))
5221 return status;
5222
5223 decode_change_info(xdr, &res->cinfo);
5224
5225 p = xdr_inline_decode(xdr, 8);
5226 if (unlikely(!p))
5227 return -EIO;
5228 res->rflags = be32_to_cpup(p++);
5229 bmlen = be32_to_cpup(p);
5230 if (bmlen > 10)
5231 goto xdr_error;
5232
5233 p = xdr_inline_decode(xdr, bmlen << 2);
5234 if (unlikely(!p))
5235 return -EIO;
5236 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5237 for (i = 0; i < savewords; ++i)
5238 res->attrset[i] = be32_to_cpup(p++);
5239 for (; i < NFS4_BITMAP_SIZE; i++)
5240 res->attrset[i] = 0;
5241
5242 return decode_delegation(xdr, res);
5243 xdr_error:
5244 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5245 return -EIO;
5246 }
5247
decode_open_confirm(struct xdr_stream * xdr,struct nfs_open_confirmres * res)5248 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5249 {
5250 int status;
5251
5252 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5253 if (status != -EIO)
5254 nfs_increment_open_seqid(status, res->seqid);
5255 if (!status)
5256 status = decode_open_stateid(xdr, &res->stateid);
5257 return status;
5258 }
5259
decode_open_downgrade(struct xdr_stream * xdr,struct nfs_closeres * res)5260 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5261 {
5262 int status;
5263
5264 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5265 if (status != -EIO)
5266 nfs_increment_open_seqid(status, res->seqid);
5267 if (!status)
5268 status = decode_open_stateid(xdr, &res->stateid);
5269 return status;
5270 }
5271
decode_putfh(struct xdr_stream * xdr)5272 static int decode_putfh(struct xdr_stream *xdr)
5273 {
5274 return decode_op_hdr(xdr, OP_PUTFH);
5275 }
5276
decode_putrootfh(struct xdr_stream * xdr)5277 static int decode_putrootfh(struct xdr_stream *xdr)
5278 {
5279 return decode_op_hdr(xdr, OP_PUTROOTFH);
5280 }
5281
decode_read(struct xdr_stream * xdr,struct rpc_rqst * req,struct nfs_pgio_res * res)5282 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5283 struct nfs_pgio_res *res)
5284 {
5285 __be32 *p;
5286 uint32_t count, eof, recvd;
5287 int status;
5288
5289 status = decode_op_hdr(xdr, OP_READ);
5290 if (status)
5291 return status;
5292 p = xdr_inline_decode(xdr, 8);
5293 if (unlikely(!p))
5294 return -EIO;
5295 eof = be32_to_cpup(p++);
5296 count = be32_to_cpup(p);
5297 recvd = xdr_read_pages(xdr, count);
5298 if (count > recvd) {
5299 dprintk("NFS: server cheating in read reply: "
5300 "count %u > recvd %u\n", count, recvd);
5301 count = recvd;
5302 eof = 0;
5303 }
5304 res->eof = eof;
5305 res->count = count;
5306 return 0;
5307 }
5308
decode_readdir(struct xdr_stream * xdr,struct rpc_rqst * req,struct nfs4_readdir_res * readdir)5309 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5310 {
5311 int status;
5312 __be32 verf[2];
5313
5314 status = decode_op_hdr(xdr, OP_READDIR);
5315 if (!status)
5316 status = decode_verifier(xdr, readdir->verifier.data);
5317 if (unlikely(status))
5318 return status;
5319 memcpy(verf, readdir->verifier.data, sizeof(verf));
5320 dprintk("%s: verifier = %08x:%08x\n",
5321 __func__, verf[0], verf[1]);
5322 return xdr_read_pages(xdr, xdr->buf->page_len);
5323 }
5324
decode_readlink(struct xdr_stream * xdr,struct rpc_rqst * req)5325 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5326 {
5327 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5328 u32 len, recvd;
5329 __be32 *p;
5330 int status;
5331
5332 status = decode_op_hdr(xdr, OP_READLINK);
5333 if (status)
5334 return status;
5335
5336 /* Convert length of symlink */
5337 p = xdr_inline_decode(xdr, 4);
5338 if (unlikely(!p))
5339 return -EIO;
5340 len = be32_to_cpup(p);
5341 if (len >= rcvbuf->page_len || len <= 0) {
5342 dprintk("nfs: server returned giant symlink!\n");
5343 return -ENAMETOOLONG;
5344 }
5345 recvd = xdr_read_pages(xdr, len);
5346 if (recvd < len) {
5347 dprintk("NFS: server cheating in readlink reply: "
5348 "count %u > recvd %u\n", len, recvd);
5349 return -EIO;
5350 }
5351 /*
5352 * The XDR encode routine has set things up so that
5353 * the link text will be copied directly into the
5354 * buffer. We just have to do overflow-checking,
5355 * and null-terminate the text (the VFS expects
5356 * null-termination).
5357 */
5358 xdr_terminate_string(rcvbuf, len);
5359 return 0;
5360 }
5361
decode_remove(struct xdr_stream * xdr,struct nfs4_change_info * cinfo)5362 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5363 {
5364 int status;
5365
5366 status = decode_op_hdr(xdr, OP_REMOVE);
5367 if (status)
5368 goto out;
5369 status = decode_change_info(xdr, cinfo);
5370 out:
5371 return status;
5372 }
5373
decode_rename(struct xdr_stream * xdr,struct nfs4_change_info * old_cinfo,struct nfs4_change_info * new_cinfo)5374 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5375 struct nfs4_change_info *new_cinfo)
5376 {
5377 int status;
5378
5379 status = decode_op_hdr(xdr, OP_RENAME);
5380 if (status)
5381 goto out;
5382 if ((status = decode_change_info(xdr, old_cinfo)))
5383 goto out;
5384 status = decode_change_info(xdr, new_cinfo);
5385 out:
5386 return status;
5387 }
5388
decode_renew(struct xdr_stream * xdr)5389 static int decode_renew(struct xdr_stream *xdr)
5390 {
5391 return decode_op_hdr(xdr, OP_RENEW);
5392 }
5393
5394 static int
decode_restorefh(struct xdr_stream * xdr)5395 decode_restorefh(struct xdr_stream *xdr)
5396 {
5397 return decode_op_hdr(xdr, OP_RESTOREFH);
5398 }
5399
decode_getacl(struct xdr_stream * xdr,struct rpc_rqst * req,struct nfs_getaclres * res,enum nfs4_acl_type type)5400 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5401 struct nfs_getaclres *res, enum nfs4_acl_type type)
5402 {
5403 unsigned int savep;
5404 uint32_t attrlen,
5405 bitmap[3] = {0};
5406 int status;
5407
5408 res->acl_len = 0;
5409 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5410 goto out;
5411
5412 xdr_enter_page(xdr, xdr->buf->page_len);
5413
5414 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5415 goto out;
5416 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5417 goto out;
5418
5419 switch (type) {
5420 default:
5421 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5422 return -EIO;
5423 if (!(bitmap[0] & FATTR4_WORD0_ACL))
5424 return -EOPNOTSUPP;
5425 break;
5426 case NFS4ACL_DACL:
5427 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_DACL - 1U)))
5428 return -EIO;
5429 if (!(bitmap[1] & FATTR4_WORD1_DACL))
5430 return -EOPNOTSUPP;
5431 break;
5432 case NFS4ACL_SACL:
5433 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_SACL - 1U)))
5434 return -EIO;
5435 if (!(bitmap[1] & FATTR4_WORD1_SACL))
5436 return -EOPNOTSUPP;
5437 }
5438
5439 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5440 * are stored with the acl data to handle the problem of
5441 * variable length bitmaps.*/
5442 res->acl_data_offset = xdr_page_pos(xdr);
5443 res->acl_len = attrlen;
5444
5445 /* Check for receive buffer overflow */
5446 if (res->acl_len > xdr_stream_remaining(xdr) ||
5447 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5448 res->acl_flags |= NFS4_ACL_TRUNC;
5449 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5450 attrlen, xdr_stream_remaining(xdr));
5451 }
5452 out:
5453 return status;
5454 }
5455
5456 static int
decode_savefh(struct xdr_stream * xdr)5457 decode_savefh(struct xdr_stream *xdr)
5458 {
5459 return decode_op_hdr(xdr, OP_SAVEFH);
5460 }
5461
decode_setattr(struct xdr_stream * xdr)5462 static int decode_setattr(struct xdr_stream *xdr)
5463 {
5464 int status;
5465
5466 status = decode_op_hdr(xdr, OP_SETATTR);
5467 if (status)
5468 return status;
5469 if (decode_bitmap4(xdr, NULL, 0) >= 0)
5470 return 0;
5471 return -EIO;
5472 }
5473
decode_setclientid(struct xdr_stream * xdr,struct nfs4_setclientid_res * res)5474 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5475 {
5476 __be32 *p;
5477 uint32_t opnum;
5478 int32_t nfserr;
5479
5480 p = xdr_inline_decode(xdr, 8);
5481 if (unlikely(!p))
5482 return -EIO;
5483 opnum = be32_to_cpup(p++);
5484 if (opnum != OP_SETCLIENTID) {
5485 dprintk("nfs: decode_setclientid: Server returned operation"
5486 " %d\n", opnum);
5487 return -EIO;
5488 }
5489 nfserr = be32_to_cpup(p);
5490 if (nfserr == NFS_OK) {
5491 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5492 if (unlikely(!p))
5493 return -EIO;
5494 p = xdr_decode_hyper(p, &res->clientid);
5495 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5496 } else if (nfserr == NFSERR_CLID_INUSE) {
5497 uint32_t len;
5498
5499 /* skip netid string */
5500 p = xdr_inline_decode(xdr, 4);
5501 if (unlikely(!p))
5502 return -EIO;
5503 len = be32_to_cpup(p);
5504 p = xdr_inline_decode(xdr, len);
5505 if (unlikely(!p))
5506 return -EIO;
5507
5508 /* skip uaddr string */
5509 p = xdr_inline_decode(xdr, 4);
5510 if (unlikely(!p))
5511 return -EIO;
5512 len = be32_to_cpup(p);
5513 p = xdr_inline_decode(xdr, len);
5514 if (unlikely(!p))
5515 return -EIO;
5516 return -NFSERR_CLID_INUSE;
5517 } else
5518 return nfs4_stat_to_errno(nfserr);
5519
5520 return 0;
5521 }
5522
decode_setclientid_confirm(struct xdr_stream * xdr)5523 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5524 {
5525 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5526 }
5527
decode_write(struct xdr_stream * xdr,struct nfs_pgio_res * res)5528 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5529 {
5530 __be32 *p;
5531 int status;
5532
5533 status = decode_op_hdr(xdr, OP_WRITE);
5534 if (status)
5535 return status;
5536
5537 p = xdr_inline_decode(xdr, 8);
5538 if (unlikely(!p))
5539 return -EIO;
5540 res->count = be32_to_cpup(p++);
5541 res->verf->committed = be32_to_cpup(p++);
5542 return decode_write_verifier(xdr, &res->verf->verifier);
5543 }
5544
decode_delegreturn(struct xdr_stream * xdr)5545 static int decode_delegreturn(struct xdr_stream *xdr)
5546 {
5547 return decode_op_hdr(xdr, OP_DELEGRETURN);
5548 }
5549
decode_secinfo_gss(struct xdr_stream * xdr,struct nfs4_secinfo4 * flavor)5550 static int decode_secinfo_gss(struct xdr_stream *xdr,
5551 struct nfs4_secinfo4 *flavor)
5552 {
5553 u32 oid_len;
5554 __be32 *p;
5555
5556 p = xdr_inline_decode(xdr, 4);
5557 if (unlikely(!p))
5558 return -EIO;
5559 oid_len = be32_to_cpup(p);
5560 if (oid_len > GSS_OID_MAX_LEN)
5561 return -EINVAL;
5562
5563 p = xdr_inline_decode(xdr, oid_len);
5564 if (unlikely(!p))
5565 return -EIO;
5566 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5567 flavor->flavor_info.oid.len = oid_len;
5568
5569 p = xdr_inline_decode(xdr, 8);
5570 if (unlikely(!p))
5571 return -EIO;
5572 flavor->flavor_info.qop = be32_to_cpup(p++);
5573 flavor->flavor_info.service = be32_to_cpup(p);
5574
5575 return 0;
5576 }
5577
decode_secinfo_common(struct xdr_stream * xdr,struct nfs4_secinfo_res * res)5578 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5579 {
5580 struct nfs4_secinfo4 *sec_flavor;
5581 unsigned int i, num_flavors;
5582 int status;
5583 __be32 *p;
5584
5585 p = xdr_inline_decode(xdr, 4);
5586 if (unlikely(!p))
5587 return -EIO;
5588
5589 res->flavors->num_flavors = 0;
5590 num_flavors = be32_to_cpup(p);
5591
5592 for (i = 0; i < num_flavors; i++) {
5593 sec_flavor = &res->flavors->flavors[i];
5594 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5595 break;
5596
5597 p = xdr_inline_decode(xdr, 4);
5598 if (unlikely(!p))
5599 return -EIO;
5600 sec_flavor->flavor = be32_to_cpup(p);
5601
5602 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5603 status = decode_secinfo_gss(xdr, sec_flavor);
5604 if (status)
5605 goto out;
5606 }
5607 res->flavors->num_flavors++;
5608 }
5609
5610 status = 0;
5611 out:
5612 return status;
5613 }
5614
decode_secinfo(struct xdr_stream * xdr,struct nfs4_secinfo_res * res)5615 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5616 {
5617 int status = decode_op_hdr(xdr, OP_SECINFO);
5618 if (status)
5619 return status;
5620 return decode_secinfo_common(xdr, res);
5621 }
5622
5623 #if defined(CONFIG_NFS_V4_1)
decode_secinfo_no_name(struct xdr_stream * xdr,struct nfs4_secinfo_res * res)5624 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5625 {
5626 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5627 if (status)
5628 return status;
5629 return decode_secinfo_common(xdr, res);
5630 }
5631
decode_op_map(struct xdr_stream * xdr,struct nfs4_op_map * op_map)5632 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5633 {
5634 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words,
5635 ARRAY_SIZE(op_map->u.words)) < 0)
5636 return -EIO;
5637 return 0;
5638 }
5639
decode_exchange_id(struct xdr_stream * xdr,struct nfs41_exchange_id_res * res)5640 static int decode_exchange_id(struct xdr_stream *xdr,
5641 struct nfs41_exchange_id_res *res)
5642 {
5643 __be32 *p;
5644 uint32_t dummy;
5645 char *dummy_str;
5646 int status;
5647 uint32_t impl_id_count;
5648
5649 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5650 if (status)
5651 return status;
5652
5653 p = xdr_inline_decode(xdr, 8);
5654 if (unlikely(!p))
5655 return -EIO;
5656 xdr_decode_hyper(p, &res->clientid);
5657 p = xdr_inline_decode(xdr, 12);
5658 if (unlikely(!p))
5659 return -EIO;
5660 res->seqid = be32_to_cpup(p++);
5661 res->flags = be32_to_cpup(p++);
5662
5663 res->state_protect.how = be32_to_cpup(p);
5664 switch (res->state_protect.how) {
5665 case SP4_NONE:
5666 break;
5667 case SP4_MACH_CRED:
5668 status = decode_op_map(xdr, &res->state_protect.enforce);
5669 if (status)
5670 return status;
5671 status = decode_op_map(xdr, &res->state_protect.allow);
5672 if (status)
5673 return status;
5674 break;
5675 default:
5676 WARN_ON_ONCE(1);
5677 return -EIO;
5678 }
5679
5680 /* server_owner4.so_minor_id */
5681 p = xdr_inline_decode(xdr, 8);
5682 if (unlikely(!p))
5683 return -EIO;
5684 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5685
5686 /* server_owner4.so_major_id */
5687 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5688 if (unlikely(status))
5689 return status;
5690 memcpy(res->server_owner->major_id, dummy_str, dummy);
5691 res->server_owner->major_id_sz = dummy;
5692
5693 /* server_scope4 */
5694 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5695 if (unlikely(status))
5696 return status;
5697 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5698 res->server_scope->server_scope_sz = dummy;
5699
5700 /* Implementation Id */
5701 p = xdr_inline_decode(xdr, 4);
5702 if (unlikely(!p))
5703 return -EIO;
5704 impl_id_count = be32_to_cpup(p++);
5705
5706 if (impl_id_count) {
5707 /* nii_domain */
5708 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5709 if (unlikely(status))
5710 return status;
5711 memcpy(res->impl_id->domain, dummy_str, dummy);
5712
5713 /* nii_name */
5714 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5715 if (unlikely(status))
5716 return status;
5717 memcpy(res->impl_id->name, dummy_str, dummy);
5718
5719 /* nii_date */
5720 p = xdr_inline_decode(xdr, 12);
5721 if (unlikely(!p))
5722 return -EIO;
5723 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5724 res->impl_id->date.nseconds = be32_to_cpup(p);
5725
5726 /* if there's more than one entry, ignore the rest */
5727 }
5728 return 0;
5729 }
5730
decode_chan_attrs(struct xdr_stream * xdr,struct nfs4_channel_attrs * attrs)5731 static int decode_chan_attrs(struct xdr_stream *xdr,
5732 struct nfs4_channel_attrs *attrs)
5733 {
5734 __be32 *p;
5735 u32 nr_attrs, val;
5736
5737 p = xdr_inline_decode(xdr, 28);
5738 if (unlikely(!p))
5739 return -EIO;
5740 val = be32_to_cpup(p++); /* headerpadsz */
5741 if (val)
5742 return -EINVAL; /* no support for header padding yet */
5743 attrs->max_rqst_sz = be32_to_cpup(p++);
5744 attrs->max_resp_sz = be32_to_cpup(p++);
5745 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5746 attrs->max_ops = be32_to_cpup(p++);
5747 attrs->max_reqs = be32_to_cpup(p++);
5748 nr_attrs = be32_to_cpup(p);
5749 if (unlikely(nr_attrs > 1)) {
5750 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5751 "count %u\n", __func__, nr_attrs);
5752 return -EINVAL;
5753 }
5754 if (nr_attrs == 1) {
5755 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5756 if (unlikely(!p))
5757 return -EIO;
5758 }
5759 return 0;
5760 }
5761
decode_sessionid(struct xdr_stream * xdr,struct nfs4_sessionid * sid)5762 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5763 {
5764 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5765 }
5766
decode_bind_conn_to_session(struct xdr_stream * xdr,struct nfs41_bind_conn_to_session_res * res)5767 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5768 struct nfs41_bind_conn_to_session_res *res)
5769 {
5770 __be32 *p;
5771 int status;
5772
5773 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5774 if (!status)
5775 status = decode_sessionid(xdr, &res->sessionid);
5776 if (unlikely(status))
5777 return status;
5778
5779 /* dir flags, rdma mode bool */
5780 p = xdr_inline_decode(xdr, 8);
5781 if (unlikely(!p))
5782 return -EIO;
5783
5784 res->dir = be32_to_cpup(p++);
5785 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5786 return -EIO;
5787 if (be32_to_cpup(p) == 0)
5788 res->use_conn_in_rdma_mode = false;
5789 else
5790 res->use_conn_in_rdma_mode = true;
5791
5792 return 0;
5793 }
5794
decode_create_session(struct xdr_stream * xdr,struct nfs41_create_session_res * res)5795 static int decode_create_session(struct xdr_stream *xdr,
5796 struct nfs41_create_session_res *res)
5797 {
5798 __be32 *p;
5799 int status;
5800
5801 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5802 if (!status)
5803 status = decode_sessionid(xdr, &res->sessionid);
5804 if (unlikely(status))
5805 return status;
5806
5807 /* seqid, flags */
5808 p = xdr_inline_decode(xdr, 8);
5809 if (unlikely(!p))
5810 return -EIO;
5811 res->seqid = be32_to_cpup(p++);
5812 res->flags = be32_to_cpup(p);
5813
5814 /* Channel attributes */
5815 status = decode_chan_attrs(xdr, &res->fc_attrs);
5816 if (!status)
5817 status = decode_chan_attrs(xdr, &res->bc_attrs);
5818 return status;
5819 }
5820
decode_destroy_session(struct xdr_stream * xdr,void * dummy)5821 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5822 {
5823 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5824 }
5825
decode_destroy_clientid(struct xdr_stream * xdr,void * dummy)5826 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5827 {
5828 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5829 }
5830
decode_reclaim_complete(struct xdr_stream * xdr,void * dummy)5831 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5832 {
5833 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5834 }
5835 #endif /* CONFIG_NFS_V4_1 */
5836
decode_sequence(struct xdr_stream * xdr,struct nfs4_sequence_res * res,struct rpc_rqst * rqstp)5837 static int decode_sequence(struct xdr_stream *xdr,
5838 struct nfs4_sequence_res *res,
5839 struct rpc_rqst *rqstp)
5840 {
5841 #if defined(CONFIG_NFS_V4_1)
5842 struct nfs4_session *session;
5843 struct nfs4_sessionid id;
5844 u32 dummy;
5845 int status;
5846 __be32 *p;
5847
5848 if (res->sr_slot == NULL)
5849 return 0;
5850 if (!res->sr_slot->table->session)
5851 return 0;
5852
5853 status = decode_op_hdr(xdr, OP_SEQUENCE);
5854 if (!status)
5855 status = decode_sessionid(xdr, &id);
5856 if (unlikely(status))
5857 goto out_err;
5858
5859 /*
5860 * If the server returns different values for sessionID, slotID or
5861 * sequence number, the server is looney tunes.
5862 */
5863 status = -EREMOTEIO;
5864 session = res->sr_slot->table->session;
5865
5866 if (memcmp(id.data, session->sess_id.data,
5867 NFS4_MAX_SESSIONID_LEN)) {
5868 dprintk("%s Invalid session id\n", __func__);
5869 goto out_err;
5870 }
5871
5872 p = xdr_inline_decode(xdr, 20);
5873 if (unlikely(!p))
5874 goto out_overflow;
5875
5876 /* seqid */
5877 dummy = be32_to_cpup(p++);
5878 if (dummy != res->sr_slot->seq_nr) {
5879 dprintk("%s Invalid sequence number\n", __func__);
5880 goto out_err;
5881 }
5882 /* slot id */
5883 dummy = be32_to_cpup(p++);
5884 if (dummy != res->sr_slot->slot_nr) {
5885 dprintk("%s Invalid slot id\n", __func__);
5886 goto out_err;
5887 }
5888 /* highest slot id */
5889 res->sr_highest_slotid = be32_to_cpup(p++);
5890 /* target highest slot id */
5891 res->sr_target_highest_slotid = be32_to_cpup(p++);
5892 /* result flags */
5893 res->sr_status_flags = be32_to_cpup(p);
5894 status = 0;
5895 out_err:
5896 res->sr_status = status;
5897 return status;
5898 out_overflow:
5899 status = -EIO;
5900 goto out_err;
5901 #else /* CONFIG_NFS_V4_1 */
5902 return 0;
5903 #endif /* CONFIG_NFS_V4_1 */
5904 }
5905
5906 #if defined(CONFIG_NFS_V4_1)
decode_layout_stateid(struct xdr_stream * xdr,nfs4_stateid * stateid)5907 static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5908 {
5909 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5910 return decode_stateid(xdr, stateid);
5911 }
5912
decode_getdeviceinfo(struct xdr_stream * xdr,struct nfs4_getdeviceinfo_res * res)5913 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5914 struct nfs4_getdeviceinfo_res *res)
5915 {
5916 struct pnfs_device *pdev = res->pdev;
5917 __be32 *p;
5918 uint32_t len, type;
5919 int status;
5920
5921 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5922 if (status) {
5923 if (status == -ETOOSMALL) {
5924 p = xdr_inline_decode(xdr, 4);
5925 if (unlikely(!p))
5926 return -EIO;
5927 pdev->mincount = be32_to_cpup(p);
5928 dprintk("%s: Min count too small. mincnt = %u\n",
5929 __func__, pdev->mincount);
5930 }
5931 return status;
5932 }
5933
5934 p = xdr_inline_decode(xdr, 8);
5935 if (unlikely(!p))
5936 return -EIO;
5937 type = be32_to_cpup(p++);
5938 if (type != pdev->layout_type) {
5939 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5940 __func__, pdev->layout_type, type);
5941 return -EINVAL;
5942 }
5943 /*
5944 * Get the length of the opaque device_addr4. xdr_read_pages places
5945 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5946 * and places the remaining xdr data in xdr_buf->tail
5947 */
5948 pdev->mincount = be32_to_cpup(p);
5949 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5950 return -EIO;
5951
5952 /* Parse notification bitmap, verifying that it is zero. */
5953 p = xdr_inline_decode(xdr, 4);
5954 if (unlikely(!p))
5955 return -EIO;
5956 len = be32_to_cpup(p);
5957 if (len) {
5958 uint32_t i;
5959
5960 p = xdr_inline_decode(xdr, 4 * len);
5961 if (unlikely(!p))
5962 return -EIO;
5963
5964 res->notification = be32_to_cpup(p++);
5965 for (i = 1; i < len; i++) {
5966 if (be32_to_cpup(p++)) {
5967 dprintk("%s: unsupported notification\n",
5968 __func__);
5969 return -EIO;
5970 }
5971 }
5972 }
5973 return 0;
5974 }
5975
decode_layoutget(struct xdr_stream * xdr,struct rpc_rqst * req,struct nfs4_layoutget_res * res)5976 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5977 struct nfs4_layoutget_res *res)
5978 {
5979 __be32 *p;
5980 int status;
5981 u32 layout_count;
5982 u32 recvd;
5983
5984 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5985 if (status)
5986 goto out;
5987 p = xdr_inline_decode(xdr, 4);
5988 if (unlikely(!p))
5989 goto out_overflow;
5990 res->return_on_close = be32_to_cpup(p);
5991 decode_layout_stateid(xdr, &res->stateid);
5992 p = xdr_inline_decode(xdr, 4);
5993 if (unlikely(!p))
5994 goto out_overflow;
5995 layout_count = be32_to_cpup(p);
5996 if (!layout_count) {
5997 dprintk("%s: server responded with empty layout array\n",
5998 __func__);
5999 status = -EINVAL;
6000 goto out;
6001 }
6002
6003 p = xdr_inline_decode(xdr, 28);
6004 if (unlikely(!p))
6005 goto out_overflow;
6006 p = xdr_decode_hyper(p, &res->range.offset);
6007 p = xdr_decode_hyper(p, &res->range.length);
6008 res->range.iomode = be32_to_cpup(p++);
6009 res->type = be32_to_cpup(p++);
6010 res->layoutp->len = be32_to_cpup(p);
6011
6012 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
6013 __func__,
6014 (unsigned long)res->range.offset,
6015 (unsigned long)res->range.length,
6016 res->range.iomode,
6017 res->type,
6018 res->layoutp->len);
6019
6020 recvd = xdr_read_pages(xdr, res->layoutp->len);
6021 if (res->layoutp->len > recvd) {
6022 dprintk("NFS: server cheating in layoutget reply: "
6023 "layout len %u > recvd %u\n",
6024 res->layoutp->len, recvd);
6025 status = -EINVAL;
6026 goto out;
6027 }
6028
6029 if (layout_count > 1) {
6030 /* We only handle a length one array at the moment. Any
6031 * further entries are just ignored. Note that this means
6032 * the client may see a response that is less than the
6033 * minimum it requested.
6034 */
6035 dprintk("%s: server responded with %d layouts, dropping tail\n",
6036 __func__, layout_count);
6037 }
6038
6039 out:
6040 res->status = status;
6041 return status;
6042 out_overflow:
6043 status = -EIO;
6044 goto out;
6045 }
6046
decode_layoutreturn(struct xdr_stream * xdr,struct nfs4_layoutreturn_res * res)6047 static int decode_layoutreturn(struct xdr_stream *xdr,
6048 struct nfs4_layoutreturn_res *res)
6049 {
6050 __be32 *p;
6051 int status;
6052
6053 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6054 if (status)
6055 return status;
6056 p = xdr_inline_decode(xdr, 4);
6057 if (unlikely(!p))
6058 return -EIO;
6059 res->lrs_present = be32_to_cpup(p);
6060 if (res->lrs_present)
6061 status = decode_layout_stateid(xdr, &res->stateid);
6062 else
6063 nfs4_stateid_copy(&res->stateid, &invalid_stateid);
6064 return status;
6065 }
6066
decode_layoutcommit(struct xdr_stream * xdr,struct rpc_rqst * req,struct nfs4_layoutcommit_res * res)6067 static int decode_layoutcommit(struct xdr_stream *xdr,
6068 struct rpc_rqst *req,
6069 struct nfs4_layoutcommit_res *res)
6070 {
6071 __be32 *p;
6072 __u32 sizechanged;
6073 int status;
6074
6075 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6076 res->status = status;
6077 if (status)
6078 return status;
6079
6080 p = xdr_inline_decode(xdr, 4);
6081 if (unlikely(!p))
6082 return -EIO;
6083 sizechanged = be32_to_cpup(p);
6084
6085 if (sizechanged) {
6086 /* throw away new size */
6087 p = xdr_inline_decode(xdr, 8);
6088 if (unlikely(!p))
6089 return -EIO;
6090 }
6091 return 0;
6092 }
6093
decode_test_stateid(struct xdr_stream * xdr,struct nfs41_test_stateid_res * res)6094 static int decode_test_stateid(struct xdr_stream *xdr,
6095 struct nfs41_test_stateid_res *res)
6096 {
6097 __be32 *p;
6098 int status;
6099 int num_res;
6100
6101 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6102 if (status)
6103 return status;
6104
6105 p = xdr_inline_decode(xdr, 4);
6106 if (unlikely(!p))
6107 return -EIO;
6108 num_res = be32_to_cpup(p++);
6109 if (num_res != 1)
6110 return -EIO;
6111
6112 p = xdr_inline_decode(xdr, 4);
6113 if (unlikely(!p))
6114 return -EIO;
6115 res->status = be32_to_cpup(p++);
6116
6117 return status;
6118 }
6119
decode_free_stateid(struct xdr_stream * xdr,struct nfs41_free_stateid_res * res)6120 static int decode_free_stateid(struct xdr_stream *xdr,
6121 struct nfs41_free_stateid_res *res)
6122 {
6123 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6124 return res->status;
6125 }
6126 #else
6127 static inline
decode_layoutreturn(struct xdr_stream * xdr,struct nfs4_layoutreturn_res * res)6128 int decode_layoutreturn(struct xdr_stream *xdr,
6129 struct nfs4_layoutreturn_res *res)
6130 {
6131 return 0;
6132 }
6133
decode_layoutget(struct xdr_stream * xdr,struct rpc_rqst * req,struct nfs4_layoutget_res * res)6134 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6135 struct nfs4_layoutget_res *res)
6136 {
6137 return 0;
6138 }
6139
6140 #endif /* CONFIG_NFS_V4_1 */
6141
6142 /*
6143 * END OF "GENERIC" DECODE ROUTINES.
6144 */
6145
6146 /*
6147 * Decode OPEN_DOWNGRADE response
6148 */
nfs4_xdr_dec_open_downgrade(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6149 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6150 struct xdr_stream *xdr,
6151 void *data)
6152 {
6153 struct nfs_closeres *res = data;
6154 struct compound_hdr hdr;
6155 int status;
6156
6157 status = decode_compound_hdr(xdr, &hdr);
6158 if (status)
6159 goto out;
6160 status = decode_sequence(xdr, &res->seq_res, rqstp);
6161 if (status)
6162 goto out;
6163 status = decode_putfh(xdr);
6164 if (status)
6165 goto out;
6166 if (res->lr_res) {
6167 status = decode_layoutreturn(xdr, res->lr_res);
6168 res->lr_ret = status;
6169 if (status)
6170 goto out;
6171 }
6172 status = decode_open_downgrade(xdr, res);
6173 out:
6174 return status;
6175 }
6176
6177 /*
6178 * Decode ACCESS response
6179 */
nfs4_xdr_dec_access(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6180 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6181 void *data)
6182 {
6183 struct nfs4_accessres *res = data;
6184 struct compound_hdr hdr;
6185 int status;
6186
6187 status = decode_compound_hdr(xdr, &hdr);
6188 if (status)
6189 goto out;
6190 status = decode_sequence(xdr, &res->seq_res, rqstp);
6191 if (status)
6192 goto out;
6193 status = decode_putfh(xdr);
6194 if (status != 0)
6195 goto out;
6196 status = decode_access(xdr, &res->supported, &res->access);
6197 if (status != 0)
6198 goto out;
6199 if (res->fattr)
6200 decode_getfattr(xdr, res->fattr, res->server);
6201 out:
6202 return status;
6203 }
6204
6205 /*
6206 * Decode LOOKUP response
6207 */
nfs4_xdr_dec_lookup(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6208 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6209 void *data)
6210 {
6211 struct nfs4_lookup_res *res = data;
6212 struct compound_hdr hdr;
6213 int status;
6214
6215 status = decode_compound_hdr(xdr, &hdr);
6216 if (status)
6217 goto out;
6218 status = decode_sequence(xdr, &res->seq_res, rqstp);
6219 if (status)
6220 goto out;
6221 status = decode_putfh(xdr);
6222 if (status)
6223 goto out;
6224 status = decode_lookup(xdr);
6225 if (status)
6226 goto out;
6227 status = decode_getfh(xdr, res->fh);
6228 if (status)
6229 goto out;
6230 status = decode_getfattr(xdr, res->fattr, res->server);
6231 out:
6232 return status;
6233 }
6234
6235 /*
6236 * Decode LOOKUPP response
6237 */
nfs4_xdr_dec_lookupp(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6238 static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6239 void *data)
6240 {
6241 struct nfs4_lookupp_res *res = data;
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_lookupp(xdr);
6255 if (status)
6256 goto out;
6257 status = decode_getfh(xdr, res->fh);
6258 if (status)
6259 goto out;
6260 status = decode_getfattr(xdr, res->fattr, res->server);
6261 out:
6262 return status;
6263 }
6264
6265 /*
6266 * Decode LOOKUP_ROOT response
6267 */
nfs4_xdr_dec_lookup_root(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6268 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6269 struct xdr_stream *xdr,
6270 void *data)
6271 {
6272 struct nfs4_lookup_res *res = data;
6273 struct compound_hdr hdr;
6274 int status;
6275
6276 status = decode_compound_hdr(xdr, &hdr);
6277 if (status)
6278 goto out;
6279 status = decode_sequence(xdr, &res->seq_res, rqstp);
6280 if (status)
6281 goto out;
6282 status = decode_putrootfh(xdr);
6283 if (status)
6284 goto out;
6285 status = decode_getfh(xdr, res->fh);
6286 if (status == 0)
6287 status = decode_getfattr(xdr, res->fattr, res->server);
6288 out:
6289 return status;
6290 }
6291
6292 /*
6293 * Decode REMOVE response
6294 */
nfs4_xdr_dec_remove(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6295 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6296 void *data)
6297 {
6298 struct nfs_removeres *res = data;
6299 struct compound_hdr hdr;
6300 int status;
6301
6302 status = decode_compound_hdr(xdr, &hdr);
6303 if (status)
6304 goto out;
6305 status = decode_sequence(xdr, &res->seq_res, rqstp);
6306 if (status)
6307 goto out;
6308 status = decode_putfh(xdr);
6309 if (status)
6310 goto out;
6311 status = decode_remove(xdr, &res->cinfo);
6312 out:
6313 return status;
6314 }
6315
6316 /*
6317 * Decode RENAME response
6318 */
nfs4_xdr_dec_rename(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6319 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6320 void *data)
6321 {
6322 struct nfs_renameres *res = data;
6323 struct compound_hdr hdr;
6324 int status;
6325
6326 status = decode_compound_hdr(xdr, &hdr);
6327 if (status)
6328 goto out;
6329 status = decode_sequence(xdr, &res->seq_res, rqstp);
6330 if (status)
6331 goto out;
6332 status = decode_putfh(xdr);
6333 if (status)
6334 goto out;
6335 status = decode_savefh(xdr);
6336 if (status)
6337 goto out;
6338 status = decode_putfh(xdr);
6339 if (status)
6340 goto out;
6341 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6342 out:
6343 return status;
6344 }
6345
6346 /*
6347 * Decode LINK response
6348 */
nfs4_xdr_dec_link(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6349 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6350 void *data)
6351 {
6352 struct nfs4_link_res *res = data;
6353 struct compound_hdr hdr;
6354 int status;
6355
6356 status = decode_compound_hdr(xdr, &hdr);
6357 if (status)
6358 goto out;
6359 status = decode_sequence(xdr, &res->seq_res, rqstp);
6360 if (status)
6361 goto out;
6362 status = decode_putfh(xdr);
6363 if (status)
6364 goto out;
6365 status = decode_savefh(xdr);
6366 if (status)
6367 goto out;
6368 status = decode_putfh(xdr);
6369 if (status)
6370 goto out;
6371 status = decode_link(xdr, &res->cinfo);
6372 if (status)
6373 goto out;
6374 /*
6375 * Note order: OP_LINK leaves the directory as the current
6376 * filehandle.
6377 */
6378 status = decode_restorefh(xdr);
6379 if (status)
6380 goto out;
6381 decode_getfattr(xdr, res->fattr, res->server);
6382 out:
6383 return status;
6384 }
6385
6386 /*
6387 * Decode CREATE response
6388 */
nfs4_xdr_dec_create(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6389 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6390 void *data)
6391 {
6392 struct nfs4_create_res *res = data;
6393 struct compound_hdr hdr;
6394 int status;
6395
6396 status = decode_compound_hdr(xdr, &hdr);
6397 if (status)
6398 goto out;
6399 status = decode_sequence(xdr, &res->seq_res, rqstp);
6400 if (status)
6401 goto out;
6402 status = decode_putfh(xdr);
6403 if (status)
6404 goto out;
6405 status = decode_create(xdr, &res->dir_cinfo);
6406 if (status)
6407 goto out;
6408 status = decode_getfh(xdr, res->fh);
6409 if (status)
6410 goto out;
6411 decode_getfattr(xdr, res->fattr, res->server);
6412 out:
6413 return status;
6414 }
6415
6416 /*
6417 * Decode SYMLINK response
6418 */
nfs4_xdr_dec_symlink(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * res)6419 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6420 void *res)
6421 {
6422 return nfs4_xdr_dec_create(rqstp, xdr, res);
6423 }
6424
6425 /*
6426 * Decode GETATTR response
6427 */
nfs4_xdr_dec_getattr(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6428 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6429 void *data)
6430 {
6431 struct nfs4_getattr_res *res = data;
6432 struct compound_hdr hdr;
6433 int status;
6434
6435 status = decode_compound_hdr(xdr, &hdr);
6436 if (status)
6437 goto out;
6438 status = decode_sequence(xdr, &res->seq_res, rqstp);
6439 if (status)
6440 goto out;
6441 status = decode_putfh(xdr);
6442 if (status)
6443 goto out;
6444 status = decode_getfattr(xdr, res->fattr, res->server);
6445 out:
6446 return status;
6447 }
6448
6449 /*
6450 * Encode an SETACL request
6451 */
nfs4_xdr_enc_setacl(struct rpc_rqst * req,struct xdr_stream * xdr,const void * data)6452 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6453 const void *data)
6454 {
6455 const struct nfs_setaclargs *args = data;
6456 struct compound_hdr hdr = {
6457 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6458 };
6459
6460 encode_compound_hdr(xdr, req, &hdr);
6461 encode_sequence(xdr, &args->seq_args, &hdr);
6462 encode_putfh(xdr, args->fh, &hdr);
6463 encode_setacl(xdr, args, &hdr);
6464 encode_nops(&hdr);
6465 }
6466
6467 /*
6468 * Decode SETACL response
6469 */
6470 static int
nfs4_xdr_dec_setacl(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6471 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6472 void *data)
6473 {
6474 struct nfs_setaclres *res = data;
6475 struct compound_hdr hdr;
6476 int status;
6477
6478 status = decode_compound_hdr(xdr, &hdr);
6479 if (status)
6480 goto out;
6481 status = decode_sequence(xdr, &res->seq_res, rqstp);
6482 if (status)
6483 goto out;
6484 status = decode_putfh(xdr);
6485 if (status)
6486 goto out;
6487 status = decode_setattr(xdr);
6488 out:
6489 return status;
6490 }
6491
6492 /*
6493 * Decode GETACL response
6494 */
6495 static int
nfs4_xdr_dec_getacl(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6496 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6497 void *data)
6498 {
6499 struct nfs_getaclres *res = data;
6500 struct compound_hdr hdr;
6501 int status;
6502
6503 if (res->acl_scratch != NULL)
6504 xdr_set_scratch_page(xdr, res->acl_scratch);
6505 status = decode_compound_hdr(xdr, &hdr);
6506 if (status)
6507 goto out;
6508 status = decode_sequence(xdr, &res->seq_res, rqstp);
6509 if (status)
6510 goto out;
6511 status = decode_putfh(xdr);
6512 if (status)
6513 goto out;
6514 status = decode_getacl(xdr, rqstp, res, res->acl_type);
6515
6516 out:
6517 return status;
6518 }
6519
6520 /*
6521 * Decode CLOSE response
6522 */
nfs4_xdr_dec_close(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6523 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6524 void *data)
6525 {
6526 struct nfs_closeres *res = data;
6527 struct compound_hdr hdr;
6528 int status;
6529
6530 status = decode_compound_hdr(xdr, &hdr);
6531 if (status)
6532 goto out;
6533 status = decode_sequence(xdr, &res->seq_res, rqstp);
6534 if (status)
6535 goto out;
6536 status = decode_putfh(xdr);
6537 if (status)
6538 goto out;
6539 if (res->lr_res) {
6540 status = decode_layoutreturn(xdr, res->lr_res);
6541 res->lr_ret = status;
6542 if (status)
6543 goto out;
6544 }
6545 if (res->fattr != NULL) {
6546 status = decode_getfattr(xdr, res->fattr, res->server);
6547 if (status != 0)
6548 goto out;
6549 }
6550 status = decode_close(xdr, res);
6551 out:
6552 return status;
6553 }
6554
6555 /*
6556 * Decode OPEN response
6557 */
nfs4_xdr_dec_open(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6558 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6559 void *data)
6560 {
6561 struct nfs_openres *res = data;
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_open(xdr, res);
6575 if (status)
6576 goto out;
6577 status = decode_getfh(xdr, &res->fh);
6578 if (status)
6579 goto out;
6580 if (res->access_request)
6581 decode_access(xdr, &res->access_supported, &res->access_result);
6582 decode_getfattr(xdr, res->f_attr, res->server);
6583 if (res->lg_res)
6584 decode_layoutget(xdr, rqstp, res->lg_res);
6585 out:
6586 return status;
6587 }
6588
6589 /*
6590 * Decode OPEN_CONFIRM response
6591 */
nfs4_xdr_dec_open_confirm(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6592 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6593 struct xdr_stream *xdr,
6594 void *data)
6595 {
6596 struct nfs_open_confirmres *res = data;
6597 struct compound_hdr hdr;
6598 int status;
6599
6600 status = decode_compound_hdr(xdr, &hdr);
6601 if (status)
6602 goto out;
6603 status = decode_putfh(xdr);
6604 if (status)
6605 goto out;
6606 status = decode_open_confirm(xdr, res);
6607 out:
6608 return status;
6609 }
6610
6611 /*
6612 * Decode OPEN response
6613 */
nfs4_xdr_dec_open_noattr(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6614 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6615 struct xdr_stream *xdr,
6616 void *data)
6617 {
6618 struct nfs_openres *res = data;
6619 struct compound_hdr hdr;
6620 int status;
6621
6622 status = decode_compound_hdr(xdr, &hdr);
6623 if (status)
6624 goto out;
6625 status = decode_sequence(xdr, &res->seq_res, rqstp);
6626 if (status)
6627 goto out;
6628 status = decode_putfh(xdr);
6629 if (status)
6630 goto out;
6631 status = decode_open(xdr, res);
6632 if (status)
6633 goto out;
6634 if (res->access_request)
6635 decode_access(xdr, &res->access_supported, &res->access_result);
6636 decode_getfattr(xdr, res->f_attr, res->server);
6637 if (res->lg_res)
6638 decode_layoutget(xdr, rqstp, res->lg_res);
6639 out:
6640 return status;
6641 }
6642
6643 /*
6644 * Decode SETATTR response
6645 */
nfs4_xdr_dec_setattr(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6646 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6647 struct xdr_stream *xdr,
6648 void *data)
6649 {
6650 struct nfs_setattrres *res = data;
6651 struct compound_hdr hdr;
6652 int status;
6653
6654 status = decode_compound_hdr(xdr, &hdr);
6655 if (status)
6656 goto out;
6657 status = decode_sequence(xdr, &res->seq_res, rqstp);
6658 if (status)
6659 goto out;
6660 status = decode_putfh(xdr);
6661 if (status)
6662 goto out;
6663 status = decode_setattr(xdr);
6664 if (status)
6665 goto out;
6666 decode_getfattr(xdr, res->fattr, res->server);
6667 out:
6668 return status;
6669 }
6670
6671 /*
6672 * Decode LOCK response
6673 */
nfs4_xdr_dec_lock(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6674 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6675 void *data)
6676 {
6677 struct nfs_lock_res *res = data;
6678 struct compound_hdr hdr;
6679 int status;
6680
6681 status = decode_compound_hdr(xdr, &hdr);
6682 if (status)
6683 goto out;
6684 status = decode_sequence(xdr, &res->seq_res, rqstp);
6685 if (status)
6686 goto out;
6687 status = decode_putfh(xdr);
6688 if (status)
6689 goto out;
6690 status = decode_lock(xdr, res);
6691 out:
6692 return status;
6693 }
6694
6695 /*
6696 * Decode LOCKT response
6697 */
nfs4_xdr_dec_lockt(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6698 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6699 void *data)
6700 {
6701 struct nfs_lockt_res *res = data;
6702 struct compound_hdr hdr;
6703 int status;
6704
6705 status = decode_compound_hdr(xdr, &hdr);
6706 if (status)
6707 goto out;
6708 status = decode_sequence(xdr, &res->seq_res, rqstp);
6709 if (status)
6710 goto out;
6711 status = decode_putfh(xdr);
6712 if (status)
6713 goto out;
6714 status = decode_lockt(xdr, res);
6715 out:
6716 return status;
6717 }
6718
6719 /*
6720 * Decode LOCKU response
6721 */
nfs4_xdr_dec_locku(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6722 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6723 void *data)
6724 {
6725 struct nfs_locku_res *res = data;
6726 struct compound_hdr hdr;
6727 int status;
6728
6729 status = decode_compound_hdr(xdr, &hdr);
6730 if (status)
6731 goto out;
6732 status = decode_sequence(xdr, &res->seq_res, rqstp);
6733 if (status)
6734 goto out;
6735 status = decode_putfh(xdr);
6736 if (status)
6737 goto out;
6738 status = decode_locku(xdr, res);
6739 out:
6740 return status;
6741 }
6742
nfs4_xdr_dec_release_lockowner(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * dummy)6743 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6744 struct xdr_stream *xdr, void *dummy)
6745 {
6746 struct compound_hdr hdr;
6747 int status;
6748
6749 status = decode_compound_hdr(xdr, &hdr);
6750 if (!status)
6751 status = decode_release_lockowner(xdr);
6752 return status;
6753 }
6754
6755 /*
6756 * Decode READLINK response
6757 */
nfs4_xdr_dec_readlink(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6758 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6759 struct xdr_stream *xdr,
6760 void *data)
6761 {
6762 struct nfs4_readlink_res *res = data;
6763 struct compound_hdr hdr;
6764 int status;
6765
6766 status = decode_compound_hdr(xdr, &hdr);
6767 if (status)
6768 goto out;
6769 status = decode_sequence(xdr, &res->seq_res, rqstp);
6770 if (status)
6771 goto out;
6772 status = decode_putfh(xdr);
6773 if (status)
6774 goto out;
6775 status = decode_readlink(xdr, rqstp);
6776 out:
6777 return status;
6778 }
6779
6780 /*
6781 * Decode READDIR response
6782 */
nfs4_xdr_dec_readdir(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6783 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6784 void *data)
6785 {
6786 struct nfs4_readdir_res *res = data;
6787 struct compound_hdr hdr;
6788 int status;
6789
6790 status = decode_compound_hdr(xdr, &hdr);
6791 if (status)
6792 goto out;
6793 status = decode_sequence(xdr, &res->seq_res, rqstp);
6794 if (status)
6795 goto out;
6796 status = decode_putfh(xdr);
6797 if (status)
6798 goto out;
6799 status = decode_readdir(xdr, rqstp, res);
6800 out:
6801 return status;
6802 }
6803
6804 /*
6805 * Decode Read response
6806 */
nfs4_xdr_dec_read(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6807 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6808 void *data)
6809 {
6810 struct nfs_pgio_res *res = data;
6811 struct compound_hdr hdr;
6812 int status;
6813
6814 status = decode_compound_hdr(xdr, &hdr);
6815 res->op_status = hdr.status;
6816 if (status)
6817 goto out;
6818 status = decode_sequence(xdr, &res->seq_res, rqstp);
6819 if (status)
6820 goto out;
6821 status = decode_putfh(xdr);
6822 if (status)
6823 goto out;
6824 status = decode_read(xdr, rqstp, res);
6825 if (!status)
6826 status = res->count;
6827 out:
6828 return status;
6829 }
6830
6831 /*
6832 * Decode WRITE response
6833 */
nfs4_xdr_dec_write(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6834 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6835 void *data)
6836 {
6837 struct nfs_pgio_res *res = data;
6838 struct compound_hdr hdr;
6839 int status;
6840
6841 status = decode_compound_hdr(xdr, &hdr);
6842 res->op_status = hdr.status;
6843 if (status)
6844 goto out;
6845 status = decode_sequence(xdr, &res->seq_res, rqstp);
6846 if (status)
6847 goto out;
6848 status = decode_putfh(xdr);
6849 if (status)
6850 goto out;
6851 status = decode_write(xdr, res);
6852 if (status)
6853 goto out;
6854 if (res->fattr)
6855 decode_getfattr(xdr, res->fattr, res->server);
6856 if (!status)
6857 status = res->count;
6858 out:
6859 return status;
6860 }
6861
6862 /*
6863 * Decode COMMIT response
6864 */
nfs4_xdr_dec_commit(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)6865 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6866 void *data)
6867 {
6868 struct nfs_commitres *res = data;
6869 struct compound_hdr hdr;
6870 int status;
6871
6872 status = decode_compound_hdr(xdr, &hdr);
6873 res->op_status = hdr.status;
6874 if (status)
6875 goto out;
6876 status = decode_sequence(xdr, &res->seq_res, rqstp);
6877 if (status)
6878 goto out;
6879 status = decode_putfh(xdr);
6880 if (status)
6881 goto out;
6882 status = decode_commit(xdr, res);
6883 out:
6884 return status;
6885 }
6886
6887 /*
6888 * Decode FSINFO response
6889 */
nfs4_xdr_dec_fsinfo(struct rpc_rqst * req,struct xdr_stream * xdr,void * data)6890 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6891 void *data)
6892 {
6893 struct nfs4_fsinfo_res *res = data;
6894 struct compound_hdr hdr;
6895 int status;
6896
6897 status = decode_compound_hdr(xdr, &hdr);
6898 if (!status)
6899 status = decode_sequence(xdr, &res->seq_res, req);
6900 if (!status)
6901 status = decode_putfh(xdr);
6902 if (!status)
6903 status = decode_fsinfo(xdr, res->fsinfo);
6904 return status;
6905 }
6906
6907 /*
6908 * Decode PATHCONF response
6909 */
nfs4_xdr_dec_pathconf(struct rpc_rqst * req,struct xdr_stream * xdr,void * data)6910 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6911 void *data)
6912 {
6913 struct nfs4_pathconf_res *res = data;
6914 struct compound_hdr hdr;
6915 int status;
6916
6917 status = decode_compound_hdr(xdr, &hdr);
6918 if (!status)
6919 status = decode_sequence(xdr, &res->seq_res, req);
6920 if (!status)
6921 status = decode_putfh(xdr);
6922 if (!status)
6923 status = decode_pathconf(xdr, res->pathconf);
6924 return status;
6925 }
6926
6927 /*
6928 * Decode STATFS response
6929 */
nfs4_xdr_dec_statfs(struct rpc_rqst * req,struct xdr_stream * xdr,void * data)6930 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6931 void *data)
6932 {
6933 struct nfs4_statfs_res *res = data;
6934 struct compound_hdr hdr;
6935 int status;
6936
6937 status = decode_compound_hdr(xdr, &hdr);
6938 if (!status)
6939 status = decode_sequence(xdr, &res->seq_res, req);
6940 if (!status)
6941 status = decode_putfh(xdr);
6942 if (!status)
6943 status = decode_statfs(xdr, res->fsstat);
6944 return status;
6945 }
6946
6947 /*
6948 * Decode GETATTR_BITMAP response
6949 */
nfs4_xdr_dec_server_caps(struct rpc_rqst * req,struct xdr_stream * xdr,void * data)6950 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6951 struct xdr_stream *xdr,
6952 void *data)
6953 {
6954 struct nfs4_server_caps_res *res = data;
6955 struct compound_hdr hdr;
6956 int status;
6957
6958 status = decode_compound_hdr(xdr, &hdr);
6959 if (status)
6960 goto out;
6961 status = decode_sequence(xdr, &res->seq_res, req);
6962 if (status)
6963 goto out;
6964 status = decode_putfh(xdr);
6965 if (status)
6966 goto out;
6967 status = decode_server_caps(xdr, res);
6968 out:
6969 return status;
6970 }
6971
6972 /*
6973 * Decode RENEW response
6974 */
nfs4_xdr_dec_renew(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * __unused)6975 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6976 void *__unused)
6977 {
6978 struct compound_hdr hdr;
6979 int status;
6980
6981 status = decode_compound_hdr(xdr, &hdr);
6982 if (!status)
6983 status = decode_renew(xdr);
6984 return status;
6985 }
6986
6987 /*
6988 * Decode SETCLIENTID response
6989 */
nfs4_xdr_dec_setclientid(struct rpc_rqst * req,struct xdr_stream * xdr,void * data)6990 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6991 struct xdr_stream *xdr,
6992 void *data)
6993 {
6994 struct nfs4_setclientid_res *res = data;
6995 struct compound_hdr hdr;
6996 int status;
6997
6998 status = decode_compound_hdr(xdr, &hdr);
6999 if (!status)
7000 status = decode_setclientid(xdr, res);
7001 return status;
7002 }
7003
7004 /*
7005 * Decode SETCLIENTID_CONFIRM response
7006 */
nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst * req,struct xdr_stream * xdr,void * data)7007 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
7008 struct xdr_stream *xdr,
7009 void *data)
7010 {
7011 struct compound_hdr hdr;
7012 int status;
7013
7014 status = decode_compound_hdr(xdr, &hdr);
7015 if (!status)
7016 status = decode_setclientid_confirm(xdr);
7017 return status;
7018 }
7019
7020 /*
7021 * Decode DELEGRETURN response
7022 */
nfs4_xdr_dec_delegreturn(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7023 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
7024 struct xdr_stream *xdr,
7025 void *data)
7026 {
7027 struct nfs4_delegreturnres *res = data;
7028 struct compound_hdr hdr;
7029 int status;
7030
7031 status = decode_compound_hdr(xdr, &hdr);
7032 if (status)
7033 goto out;
7034 status = decode_sequence(xdr, &res->seq_res, rqstp);
7035 if (status)
7036 goto out;
7037 status = decode_putfh(xdr);
7038 if (status != 0)
7039 goto out;
7040 if (res->lr_res) {
7041 status = decode_layoutreturn(xdr, res->lr_res);
7042 res->lr_ret = status;
7043 if (status)
7044 goto out;
7045 }
7046 if (res->fattr) {
7047 status = decode_getfattr(xdr, res->fattr, res->server);
7048 if (status != 0)
7049 goto out;
7050 }
7051 status = decode_delegreturn(xdr);
7052 out:
7053 return status;
7054 }
7055
7056 /*
7057 * Decode FS_LOCATIONS response
7058 */
nfs4_xdr_dec_fs_locations(struct rpc_rqst * req,struct xdr_stream * xdr,void * data)7059 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7060 struct xdr_stream *xdr,
7061 void *data)
7062 {
7063 struct nfs4_fs_locations_res *res = data;
7064 struct compound_hdr hdr;
7065 int status;
7066
7067 status = decode_compound_hdr(xdr, &hdr);
7068 if (status)
7069 goto out;
7070 status = decode_sequence(xdr, &res->seq_res, req);
7071 if (status)
7072 goto out;
7073 status = decode_putfh(xdr);
7074 if (status)
7075 goto out;
7076 if (res->migration) {
7077 xdr_enter_page(xdr, PAGE_SIZE);
7078 status = decode_getfattr_generic(xdr,
7079 res->fs_locations->fattr,
7080 NULL, res->fs_locations,
7081 res->fs_locations->server);
7082 if (status)
7083 goto out;
7084 if (res->renew)
7085 status = decode_renew(xdr);
7086 } else {
7087 status = decode_lookup(xdr);
7088 if (status)
7089 goto out;
7090 xdr_enter_page(xdr, PAGE_SIZE);
7091 status = decode_getfattr_generic(xdr,
7092 res->fs_locations->fattr,
7093 NULL, res->fs_locations,
7094 res->fs_locations->server);
7095 }
7096 out:
7097 return status;
7098 }
7099
7100 /*
7101 * Decode SECINFO response
7102 */
nfs4_xdr_dec_secinfo(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7103 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7104 struct xdr_stream *xdr,
7105 void *data)
7106 {
7107 struct nfs4_secinfo_res *res = data;
7108 struct compound_hdr hdr;
7109 int status;
7110
7111 status = decode_compound_hdr(xdr, &hdr);
7112 if (status)
7113 goto out;
7114 status = decode_sequence(xdr, &res->seq_res, rqstp);
7115 if (status)
7116 goto out;
7117 status = decode_putfh(xdr);
7118 if (status)
7119 goto out;
7120 status = decode_secinfo(xdr, res);
7121 out:
7122 return status;
7123 }
7124
7125 /*
7126 * Decode FSID_PRESENT response
7127 */
nfs4_xdr_dec_fsid_present(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7128 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7129 struct xdr_stream *xdr,
7130 void *data)
7131 {
7132 struct nfs4_fsid_present_res *res = data;
7133 struct compound_hdr hdr;
7134 int status;
7135
7136 status = decode_compound_hdr(xdr, &hdr);
7137 if (status)
7138 goto out;
7139 status = decode_sequence(xdr, &res->seq_res, rqstp);
7140 if (status)
7141 goto out;
7142 status = decode_putfh(xdr);
7143 if (status)
7144 goto out;
7145 status = decode_getfh(xdr, res->fh);
7146 if (status)
7147 goto out;
7148 if (res->renew)
7149 status = decode_renew(xdr);
7150 out:
7151 return status;
7152 }
7153
7154 #if defined(CONFIG_NFS_V4_1)
7155 /*
7156 * Decode BIND_CONN_TO_SESSION response
7157 */
nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * res)7158 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7159 struct xdr_stream *xdr,
7160 void *res)
7161 {
7162 struct compound_hdr hdr;
7163 int status;
7164
7165 status = decode_compound_hdr(xdr, &hdr);
7166 if (!status)
7167 status = decode_bind_conn_to_session(xdr, res);
7168 return status;
7169 }
7170
7171 /*
7172 * Decode EXCHANGE_ID response
7173 */
nfs4_xdr_dec_exchange_id(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * res)7174 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7175 struct xdr_stream *xdr,
7176 void *res)
7177 {
7178 struct compound_hdr hdr;
7179 int status;
7180
7181 status = decode_compound_hdr(xdr, &hdr);
7182 if (!status)
7183 status = decode_exchange_id(xdr, res);
7184 return status;
7185 }
7186
7187 /*
7188 * Decode CREATE_SESSION response
7189 */
nfs4_xdr_dec_create_session(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * res)7190 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7191 struct xdr_stream *xdr,
7192 void *res)
7193 {
7194 struct compound_hdr hdr;
7195 int status;
7196
7197 status = decode_compound_hdr(xdr, &hdr);
7198 if (!status)
7199 status = decode_create_session(xdr, res);
7200 return status;
7201 }
7202
7203 /*
7204 * Decode DESTROY_SESSION response
7205 */
nfs4_xdr_dec_destroy_session(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * res)7206 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7207 struct xdr_stream *xdr,
7208 void *res)
7209 {
7210 struct compound_hdr hdr;
7211 int status;
7212
7213 status = decode_compound_hdr(xdr, &hdr);
7214 if (!status)
7215 status = decode_destroy_session(xdr, res);
7216 return status;
7217 }
7218
7219 /*
7220 * Decode DESTROY_CLIENTID response
7221 */
nfs4_xdr_dec_destroy_clientid(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * res)7222 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7223 struct xdr_stream *xdr,
7224 void *res)
7225 {
7226 struct compound_hdr hdr;
7227 int status;
7228
7229 status = decode_compound_hdr(xdr, &hdr);
7230 if (!status)
7231 status = decode_destroy_clientid(xdr, res);
7232 return status;
7233 }
7234
7235 /*
7236 * Decode SEQUENCE response
7237 */
nfs4_xdr_dec_sequence(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * res)7238 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7239 struct xdr_stream *xdr,
7240 void *res)
7241 {
7242 struct compound_hdr hdr;
7243 int status;
7244
7245 status = decode_compound_hdr(xdr, &hdr);
7246 if (!status)
7247 status = decode_sequence(xdr, res, rqstp);
7248 return status;
7249 }
7250
7251 #endif
7252
7253 /*
7254 * Decode GET_LEASE_TIME response
7255 */
nfs4_xdr_dec_get_lease_time(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7256 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7257 struct xdr_stream *xdr,
7258 void *data)
7259 {
7260 struct nfs4_get_lease_time_res *res = data;
7261 struct compound_hdr hdr;
7262 int status;
7263
7264 status = decode_compound_hdr(xdr, &hdr);
7265 if (!status)
7266 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7267 if (!status)
7268 status = decode_putrootfh(xdr);
7269 if (!status)
7270 status = decode_fsinfo(xdr, res->lr_fsinfo);
7271 return status;
7272 }
7273
7274 #ifdef CONFIG_NFS_V4_1
7275
7276 /*
7277 * Decode RECLAIM_COMPLETE response
7278 */
nfs4_xdr_dec_reclaim_complete(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7279 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7280 struct xdr_stream *xdr,
7281 void *data)
7282 {
7283 struct nfs41_reclaim_complete_res *res = data;
7284 struct compound_hdr hdr;
7285 int status;
7286
7287 status = decode_compound_hdr(xdr, &hdr);
7288 if (!status)
7289 status = decode_sequence(xdr, &res->seq_res, rqstp);
7290 if (!status)
7291 status = decode_reclaim_complete(xdr, NULL);
7292 return status;
7293 }
7294
7295 /*
7296 * Decode GETDEVINFO response
7297 */
nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7298 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7299 struct xdr_stream *xdr,
7300 void *data)
7301 {
7302 struct nfs4_getdeviceinfo_res *res = data;
7303 struct compound_hdr hdr;
7304 int status;
7305
7306 status = decode_compound_hdr(xdr, &hdr);
7307 if (status != 0)
7308 goto out;
7309 status = decode_sequence(xdr, &res->seq_res, rqstp);
7310 if (status != 0)
7311 goto out;
7312 status = decode_getdeviceinfo(xdr, res);
7313 out:
7314 return status;
7315 }
7316
7317 /*
7318 * Decode LAYOUTGET response
7319 */
nfs4_xdr_dec_layoutget(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7320 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7321 struct xdr_stream *xdr,
7322 void *data)
7323 {
7324 struct nfs4_layoutget_res *res = data;
7325 struct compound_hdr hdr;
7326 int status;
7327
7328 status = decode_compound_hdr(xdr, &hdr);
7329 if (status)
7330 goto out;
7331 status = decode_sequence(xdr, &res->seq_res, rqstp);
7332 if (status)
7333 goto out;
7334 status = decode_putfh(xdr);
7335 if (status)
7336 goto out;
7337 status = decode_layoutget(xdr, rqstp, res);
7338 out:
7339 return status;
7340 }
7341
7342 /*
7343 * Decode LAYOUTRETURN response
7344 */
nfs4_xdr_dec_layoutreturn(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7345 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7346 struct xdr_stream *xdr,
7347 void *data)
7348 {
7349 struct nfs4_layoutreturn_res *res = data;
7350 struct compound_hdr hdr;
7351 int status;
7352
7353 status = decode_compound_hdr(xdr, &hdr);
7354 if (status)
7355 goto out;
7356 status = decode_sequence(xdr, &res->seq_res, rqstp);
7357 if (status)
7358 goto out;
7359 status = decode_putfh(xdr);
7360 if (status)
7361 goto out;
7362 status = decode_layoutreturn(xdr, res);
7363 out:
7364 return status;
7365 }
7366
7367 /*
7368 * Decode LAYOUTCOMMIT response
7369 */
nfs4_xdr_dec_layoutcommit(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7370 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7371 struct xdr_stream *xdr,
7372 void *data)
7373 {
7374 struct nfs4_layoutcommit_res *res = data;
7375 struct compound_hdr hdr;
7376 int status;
7377
7378 status = decode_compound_hdr(xdr, &hdr);
7379 if (status)
7380 goto out;
7381 status = decode_sequence(xdr, &res->seq_res, rqstp);
7382 if (status)
7383 goto out;
7384 status = decode_putfh(xdr);
7385 if (status)
7386 goto out;
7387 status = decode_layoutcommit(xdr, rqstp, res);
7388 if (status)
7389 goto out;
7390 decode_getfattr(xdr, res->fattr, res->server);
7391 out:
7392 return status;
7393 }
7394
7395 /*
7396 * Decode SECINFO_NO_NAME response
7397 */
nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7398 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7399 struct xdr_stream *xdr,
7400 void *data)
7401 {
7402 struct nfs4_secinfo_res *res = data;
7403 struct compound_hdr hdr;
7404 int status;
7405
7406 status = decode_compound_hdr(xdr, &hdr);
7407 if (status)
7408 goto out;
7409 status = decode_sequence(xdr, &res->seq_res, rqstp);
7410 if (status)
7411 goto out;
7412 status = decode_putrootfh(xdr);
7413 if (status)
7414 goto out;
7415 status = decode_secinfo_no_name(xdr, res);
7416 out:
7417 return status;
7418 }
7419
7420 /*
7421 * Decode TEST_STATEID response
7422 */
nfs4_xdr_dec_test_stateid(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7423 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7424 struct xdr_stream *xdr,
7425 void *data)
7426 {
7427 struct nfs41_test_stateid_res *res = data;
7428 struct compound_hdr hdr;
7429 int status;
7430
7431 status = decode_compound_hdr(xdr, &hdr);
7432 if (status)
7433 goto out;
7434 status = decode_sequence(xdr, &res->seq_res, rqstp);
7435 if (status)
7436 goto out;
7437 status = decode_test_stateid(xdr, res);
7438 out:
7439 return status;
7440 }
7441
7442 /*
7443 * Decode FREE_STATEID response
7444 */
nfs4_xdr_dec_free_stateid(struct rpc_rqst * rqstp,struct xdr_stream * xdr,void * data)7445 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7446 struct xdr_stream *xdr,
7447 void *data)
7448 {
7449 struct nfs41_free_stateid_res *res = data;
7450 struct compound_hdr hdr;
7451 int status;
7452
7453 status = decode_compound_hdr(xdr, &hdr);
7454 if (status)
7455 goto out;
7456 status = decode_sequence(xdr, &res->seq_res, rqstp);
7457 if (status)
7458 goto out;
7459 status = decode_free_stateid(xdr, res);
7460 out:
7461 return status;
7462 }
7463 #endif /* CONFIG_NFS_V4_1 */
7464
7465 /**
7466 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7467 * the local page cache.
7468 * @xdr: XDR stream where entry resides
7469 * @entry: buffer to fill in with entry data
7470 * @plus: boolean indicating whether this should be a readdirplus entry
7471 *
7472 * Returns zero if successful, otherwise a negative errno value is
7473 * returned.
7474 *
7475 * This function is not invoked during READDIR reply decoding, but
7476 * rather whenever an application invokes the getdents(2) system call
7477 * on a directory already in our cache.
7478 */
nfs4_decode_dirent(struct xdr_stream * xdr,struct nfs_entry * entry,bool plus)7479 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7480 bool plus)
7481 {
7482 unsigned int savep;
7483 uint32_t bitmap[3] = {0};
7484 uint32_t len;
7485 uint64_t new_cookie;
7486 __be32 *p = xdr_inline_decode(xdr, 4);
7487 if (unlikely(!p))
7488 return -EAGAIN;
7489 if (*p == xdr_zero) {
7490 p = xdr_inline_decode(xdr, 4);
7491 if (unlikely(!p))
7492 return -EAGAIN;
7493 if (*p == xdr_zero)
7494 return -EAGAIN;
7495 entry->eof = 1;
7496 return -EBADCOOKIE;
7497 }
7498
7499 p = xdr_inline_decode(xdr, 12);
7500 if (unlikely(!p))
7501 return -EAGAIN;
7502 p = xdr_decode_hyper(p, &new_cookie);
7503 entry->len = be32_to_cpup(p);
7504
7505 p = xdr_inline_decode(xdr, entry->len);
7506 if (unlikely(!p))
7507 return -EAGAIN;
7508 entry->name = (const char *) p;
7509
7510 /*
7511 * In case the server doesn't return an inode number,
7512 * we fake one here. (We don't use inode number 0,
7513 * since glibc seems to choke on it...)
7514 */
7515 entry->ino = 1;
7516 entry->fattr->valid = 0;
7517
7518 if (decode_attr_bitmap(xdr, bitmap) < 0)
7519 return -EAGAIN;
7520
7521 if (decode_attr_length(xdr, &len, &savep) < 0)
7522 return -EAGAIN;
7523
7524 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7525 NULL, entry->server) < 0)
7526 return -EAGAIN;
7527 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7528 entry->ino = entry->fattr->mounted_on_fileid;
7529 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7530 entry->ino = entry->fattr->fileid;
7531
7532 entry->d_type = DT_UNKNOWN;
7533 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7534 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7535
7536 entry->cookie = new_cookie;
7537
7538 return 0;
7539 }
7540
7541 /*
7542 * We need to translate between nfs status return values and
7543 * the local errno values which may not be the same.
7544 */
7545 static struct {
7546 int stat;
7547 int errno;
7548 } nfs_errtbl[] = {
7549 { NFS4_OK, 0 },
7550 { NFS4ERR_PERM, -EPERM },
7551 { NFS4ERR_NOENT, -ENOENT },
7552 { NFS4ERR_IO, -errno_NFSERR_IO},
7553 { NFS4ERR_NXIO, -ENXIO },
7554 { NFS4ERR_ACCESS, -EACCES },
7555 { NFS4ERR_EXIST, -EEXIST },
7556 { NFS4ERR_XDEV, -EXDEV },
7557 { NFS4ERR_NOTDIR, -ENOTDIR },
7558 { NFS4ERR_ISDIR, -EISDIR },
7559 { NFS4ERR_INVAL, -EINVAL },
7560 { NFS4ERR_FBIG, -EFBIG },
7561 { NFS4ERR_NOSPC, -ENOSPC },
7562 { NFS4ERR_ROFS, -EROFS },
7563 { NFS4ERR_MLINK, -EMLINK },
7564 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7565 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7566 { NFS4ERR_DQUOT, -EDQUOT },
7567 { NFS4ERR_STALE, -ESTALE },
7568 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7569 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7570 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7571 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7572 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7573 { NFS4ERR_BADTYPE, -EBADTYPE },
7574 { NFS4ERR_LOCKED, -EAGAIN },
7575 { NFS4ERR_SYMLINK, -ELOOP },
7576 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7577 { NFS4ERR_DEADLOCK, -EDEADLK },
7578 { NFS4ERR_NOXATTR, -ENODATA },
7579 { NFS4ERR_XATTR2BIG, -E2BIG },
7580 { -1, -EIO }
7581 };
7582
7583 /*
7584 * Convert an NFS error code to a local one.
7585 * This one is used jointly by NFSv2 and NFSv3.
7586 */
7587 static int
nfs4_stat_to_errno(int stat)7588 nfs4_stat_to_errno(int stat)
7589 {
7590 int i;
7591 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7592 if (nfs_errtbl[i].stat == stat)
7593 return nfs_errtbl[i].errno;
7594 }
7595 if (stat <= 10000 || stat > 10100) {
7596 /* The server is looney tunes. */
7597 return -EREMOTEIO;
7598 }
7599 /* If we cannot translate the error, the recovery routines should
7600 * handle it.
7601 * Note: remaining NFSv4 error codes have values > 10000, so should
7602 * not conflict with native Linux error codes.
7603 */
7604 return -stat;
7605 }
7606
7607 #ifdef CONFIG_NFS_V4_2
7608 #include "nfs42xdr.c"
7609 #endif /* CONFIG_NFS_V4_2 */
7610
7611 #define PROC(proc, argtype, restype) \
7612 [NFSPROC4_CLNT_##proc] = { \
7613 .p_proc = NFSPROC4_COMPOUND, \
7614 .p_encode = nfs4_xdr_##argtype, \
7615 .p_decode = nfs4_xdr_##restype, \
7616 .p_arglen = NFS4_##argtype##_sz, \
7617 .p_replen = NFS4_##restype##_sz, \
7618 .p_statidx = NFSPROC4_CLNT_##proc, \
7619 .p_name = #proc, \
7620 }
7621
7622 #define STUB(proc) \
7623 [NFSPROC4_CLNT_##proc] = { \
7624 .p_name = #proc, \
7625 }
7626
7627 #if defined(CONFIG_NFS_V4_1)
7628 #define PROC41(proc, argtype, restype) \
7629 PROC(proc, argtype, restype)
7630 #else
7631 #define PROC41(proc, argtype, restype) \
7632 STUB(proc)
7633 #endif
7634
7635 #if defined(CONFIG_NFS_V4_2)
7636 #define PROC42(proc, argtype, restype) \
7637 PROC(proc, argtype, restype)
7638 #else
7639 #define PROC42(proc, argtype, restype) \
7640 STUB(proc)
7641 #endif
7642
7643 const struct rpc_procinfo nfs4_procedures[] = {
7644 PROC(READ, enc_read, dec_read),
7645 PROC(WRITE, enc_write, dec_write),
7646 PROC(COMMIT, enc_commit, dec_commit),
7647 PROC(OPEN, enc_open, dec_open),
7648 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7649 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7650 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7651 PROC(CLOSE, enc_close, dec_close),
7652 PROC(SETATTR, enc_setattr, dec_setattr),
7653 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7654 PROC(RENEW, enc_renew, dec_renew),
7655 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7656 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7657 PROC(LOCK, enc_lock, dec_lock),
7658 PROC(LOCKT, enc_lockt, dec_lockt),
7659 PROC(LOCKU, enc_locku, dec_locku),
7660 PROC(ACCESS, enc_access, dec_access),
7661 PROC(GETATTR, enc_getattr, dec_getattr),
7662 PROC(LOOKUP, enc_lookup, dec_lookup),
7663 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7664 PROC(REMOVE, enc_remove, dec_remove),
7665 PROC(RENAME, enc_rename, dec_rename),
7666 PROC(LINK, enc_link, dec_link),
7667 PROC(SYMLINK, enc_symlink, dec_symlink),
7668 PROC(CREATE, enc_create, dec_create),
7669 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7670 PROC(STATFS, enc_statfs, dec_statfs),
7671 PROC(READLINK, enc_readlink, dec_readlink),
7672 PROC(READDIR, enc_readdir, dec_readdir),
7673 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7674 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7675 PROC(GETACL, enc_getacl, dec_getacl),
7676 PROC(SETACL, enc_setacl, dec_setacl),
7677 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7678 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7679 PROC(SECINFO, enc_secinfo, dec_secinfo),
7680 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7681 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7682 PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
7683 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7684 PROC41(SEQUENCE, enc_sequence, dec_sequence),
7685 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7686 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
7687 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7688 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),
7689 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7690 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7691 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7692 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7693 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7694 STUB(GETDEVICELIST),
7695 PROC41(BIND_CONN_TO_SESSION,
7696 enc_bind_conn_to_session, dec_bind_conn_to_session),
7697 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid),
7698 PROC42(SEEK, enc_seek, dec_seek),
7699 PROC42(ALLOCATE, enc_allocate, dec_allocate),
7700 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate),
7701 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7702 PROC42(CLONE, enc_clone, dec_clone),
7703 PROC42(COPY, enc_copy, dec_copy),
7704 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
7705 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify),
7706 PROC(LOOKUPP, enc_lookupp, dec_lookupp),
7707 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror),
7708 PROC42(GETXATTR, enc_getxattr, dec_getxattr),
7709 PROC42(SETXATTR, enc_setxattr, dec_setxattr),
7710 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs),
7711 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr),
7712 PROC42(READ_PLUS, enc_read_plus, dec_read_plus),
7713 };
7714
7715 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7716 const struct rpc_version nfs_version4 = {
7717 .number = 4,
7718 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7719 .procs = nfs4_procedures,
7720 .counts = nfs_version4_counts,
7721 };
7722