]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - fs/nfs/nfs4xdr.c
projects / mirror_ubuntu-jammy-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
NFSv4: Add tracing for COMPOUND errors
[mirror_ubuntu-jammy-kernel.git] / fs / nfs / nfs4xdr.c
1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/in.h>
44 #include <linux/pagemap.h>
45 #include <linux/proc_fs.h>
46 #include <linux/kdev_t.h>
47 #include <linux/module.h>
48 #include <linux/utsname.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/sunrpc/msg_prot.h>
51 #include <linux/sunrpc/gss_api.h>
52 #include <linux/nfs.h>
53 #include <linux/nfs4.h>
54 #include <linux/nfs_fs.h>
55
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
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
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
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
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
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
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
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
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
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
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
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
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
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 *
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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 */
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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 >> 1;
1609 __be32 *p, verf[2];
1610 uint32_t attrlen = 0;
1611 unsigned int i;
1612
1613 if (readdir->plus) {
1614 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1615 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1616 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1617 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1618 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1619 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1620 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1621 dircount >>= 1;
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(readdir->count);
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
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
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
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
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
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
1683 static void
1684 encode_setacl(struct xdr_stream *xdr, const struct nfs_setaclargs *arg,
1685 struct compound_hdr *hdr)
1686 {
1687 __be32 *p;
1688
1689 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1690 encode_nfs4_stateid(xdr, &zero_stateid);
1691 p = reserve_space(xdr, 2*4);
1692 *p++ = cpu_to_be32(1);
1693 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1694 p = reserve_space(xdr, 4);
1695 *p = cpu_to_be32(arg->acl_len);
1696 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1697 }
1698
1699 static void
1700 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1701 {
1702 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1703 }
1704
1705 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1706 {
1707 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1708 encode_nfs4_stateid(xdr, &arg->stateid);
1709 encode_attrs(xdr, arg->iap, arg->label, NULL, server,
1710 server->attr_bitmask);
1711 }
1712
1713 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1714 {
1715 __be32 *p;
1716
1717 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1718 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1719
1720 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1721 setclientid->sc_clnt->cl_owner_id);
1722 p = reserve_space(xdr, 4);
1723 *p = cpu_to_be32(setclientid->sc_prog);
1724 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1725 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1726 p = reserve_space(xdr, 4);
1727 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1728 }
1729
1730 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1731 {
1732 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1733 decode_setclientid_confirm_maxsz, hdr);
1734 encode_uint64(xdr, arg->clientid);
1735 encode_nfs4_verifier(xdr, &arg->confirm);
1736 }
1737
1738 static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1739 struct compound_hdr *hdr)
1740 {
1741 __be32 *p;
1742
1743 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1744 encode_nfs4_stateid(xdr, &args->stateid);
1745
1746 p = reserve_space(xdr, 16);
1747 p = xdr_encode_hyper(p, args->offset);
1748 *p++ = cpu_to_be32(args->stable);
1749 *p = cpu_to_be32(args->count);
1750
1751 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1752 }
1753
1754 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1755 {
1756 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1757 encode_nfs4_stateid(xdr, stateid);
1758 }
1759
1760 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1761 {
1762 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1763 encode_string(xdr, name->len, name->name);
1764 }
1765
1766 #if defined(CONFIG_NFS_V4_1)
1767 /* NFSv4.1 operations */
1768 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1769 const struct nfs41_bind_conn_to_session_args *args,
1770 struct compound_hdr *hdr)
1771 {
1772 __be32 *p;
1773
1774 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1775 decode_bind_conn_to_session_maxsz, hdr);
1776 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1777 p = xdr_reserve_space(xdr, 8);
1778 *p++ = cpu_to_be32(args->dir);
1779 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1780 }
1781
1782 static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map)
1783 {
1784 unsigned int i;
1785 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1786 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1787 encode_uint32(xdr, op_map->u.words[i]);
1788 }
1789
1790 static void encode_exchange_id(struct xdr_stream *xdr,
1791 const struct nfs41_exchange_id_args *args,
1792 struct compound_hdr *hdr)
1793 {
1794 __be32 *p;
1795 char impl_name[IMPL_NAME_LIMIT];
1796 int len = 0;
1797
1798 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1799 encode_nfs4_verifier(xdr, &args->verifier);
1800
1801 encode_string(xdr, strlen(args->client->cl_owner_id),
1802 args->client->cl_owner_id);
1803
1804 encode_uint32(xdr, args->flags);
1805 encode_uint32(xdr, args->state_protect.how);
1806
1807 switch (args->state_protect.how) {
1808 case SP4_NONE:
1809 break;
1810 case SP4_MACH_CRED:
1811 encode_op_map(xdr, &args->state_protect.enforce);
1812 encode_op_map(xdr, &args->state_protect.allow);
1813 break;
1814 default:
1815 WARN_ON_ONCE(1);
1816 break;
1817 }
1818
1819 if (send_implementation_id &&
1820 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1821 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1822 <= sizeof(impl_name) + 1)
1823 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1824 utsname()->sysname, utsname()->release,
1825 utsname()->version, utsname()->machine);
1826
1827 if (len > 0) {
1828 encode_uint32(xdr, 1); /* implementation id array length=1 */
1829
1830 encode_string(xdr,
1831 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1832 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1833 encode_string(xdr, len, impl_name);
1834 /* just send zeros for nii_date - the date is in nii_name */
1835 p = reserve_space(xdr, 12);
1836 p = xdr_encode_hyper(p, 0);
1837 *p = cpu_to_be32(0);
1838 } else
1839 encode_uint32(xdr, 0); /* implementation id array length=0 */
1840 }
1841
1842 static void encode_create_session(struct xdr_stream *xdr,
1843 const struct nfs41_create_session_args *args,
1844 struct compound_hdr *hdr)
1845 {
1846 __be32 *p;
1847 struct nfs_client *clp = args->client;
1848 struct rpc_clnt *clnt = clp->cl_rpcclient;
1849 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1850 u32 max_resp_sz_cached;
1851
1852 /*
1853 * Assumes OPEN is the biggest non-idempotent compound.
1854 * 2 is the verifier.
1855 */
1856 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2)
1857 * XDR_UNIT + RPC_MAX_AUTH_SIZE;
1858
1859 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1860 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1861 p = xdr_encode_hyper(p, args->clientid);
1862 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1863 *p++ = cpu_to_be32(args->flags); /*flags */
1864
1865 /* Fore Channel */
1866 *p++ = cpu_to_be32(0); /* header padding size */
1867 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1868 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1869 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1870 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1871 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1872 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1873
1874 /* Back Channel */
1875 *p++ = cpu_to_be32(0); /* header padding size */
1876 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1877 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1878 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1879 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1880 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1881 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1882
1883 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1884 *p++ = cpu_to_be32(1);
1885 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1886
1887 /* authsys_parms rfc1831 */
1888 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1889 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1890 *p++ = cpu_to_be32(0); /* UID */
1891 *p++ = cpu_to_be32(0); /* GID */
1892 *p = cpu_to_be32(0); /* No more gids */
1893 }
1894
1895 static void encode_destroy_session(struct xdr_stream *xdr,
1896 const struct nfs4_session *session,
1897 struct compound_hdr *hdr)
1898 {
1899 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1900 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1901 }
1902
1903 static void encode_destroy_clientid(struct xdr_stream *xdr,
1904 uint64_t clientid,
1905 struct compound_hdr *hdr)
1906 {
1907 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1908 encode_uint64(xdr, clientid);
1909 }
1910
1911 static void encode_reclaim_complete(struct xdr_stream *xdr,
1912 const struct nfs41_reclaim_complete_args *args,
1913 struct compound_hdr *hdr)
1914 {
1915 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1916 encode_uint32(xdr, args->one_fs);
1917 }
1918 #endif /* CONFIG_NFS_V4_1 */
1919
1920 static void encode_sequence(struct xdr_stream *xdr,
1921 const struct nfs4_sequence_args *args,
1922 struct compound_hdr *hdr)
1923 {
1924 #if defined(CONFIG_NFS_V4_1)
1925 struct nfs4_session *session;
1926 struct nfs4_slot_table *tp;
1927 struct nfs4_slot *slot = args->sa_slot;
1928 __be32 *p;
1929
1930 tp = slot->table;
1931 session = tp->session;
1932 if (!session)
1933 return;
1934
1935 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1936
1937 /*
1938 * Sessionid + seqid + slotid + max slotid + cache_this
1939 */
1940 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1941 "max_slotid=%d cache_this=%d\n",
1942 __func__,
1943 ((u32 *)session->sess_id.data)[0],
1944 ((u32 *)session->sess_id.data)[1],
1945 ((u32 *)session->sess_id.data)[2],
1946 ((u32 *)session->sess_id.data)[3],
1947 slot->seq_nr, slot->slot_nr,
1948 tp->highest_used_slotid, args->sa_cache_this);
1949 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1950 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1951 *p++ = cpu_to_be32(slot->seq_nr);
1952 *p++ = cpu_to_be32(slot->slot_nr);
1953 *p++ = cpu_to_be32(tp->highest_used_slotid);
1954 *p = cpu_to_be32(args->sa_cache_this);
1955 #endif /* CONFIG_NFS_V4_1 */
1956 }
1957
1958 #ifdef CONFIG_NFS_V4_1
1959 static void
1960 encode_getdeviceinfo(struct xdr_stream *xdr,
1961 const struct nfs4_getdeviceinfo_args *args,
1962 struct compound_hdr *hdr)
1963 {
1964 __be32 *p;
1965
1966 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1967 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1968 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1969 NFS4_DEVICEID4_SIZE);
1970 *p++ = cpu_to_be32(args->pdev->layout_type);
1971 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1972
1973 p = reserve_space(xdr, 4 + 4);
1974 *p++ = cpu_to_be32(1); /* bitmap length */
1975 *p++ = cpu_to_be32(args->notify_types);
1976 }
1977
1978 static void
1979 encode_layoutget(struct xdr_stream *xdr,
1980 const struct nfs4_layoutget_args *args,
1981 struct compound_hdr *hdr)
1982 {
1983 __be32 *p;
1984
1985 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1986 p = reserve_space(xdr, 36);
1987 *p++ = cpu_to_be32(0); /* Signal layout available */
1988 *p++ = cpu_to_be32(args->type);
1989 *p++ = cpu_to_be32(args->range.iomode);
1990 p = xdr_encode_hyper(p, args->range.offset);
1991 p = xdr_encode_hyper(p, args->range.length);
1992 p = xdr_encode_hyper(p, args->minlength);
1993 encode_nfs4_stateid(xdr, &args->stateid);
1994 encode_uint32(xdr, args->maxcount);
1995
1996 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1997 __func__,
1998 args->type,
1999 args->range.iomode,
2000 (unsigned long)args->range.offset,
2001 (unsigned long)args->range.length,
2002 args->maxcount);
2003 }
2004
2005 static int
2006 encode_layoutcommit(struct xdr_stream *xdr,
2007 struct inode *inode,
2008 const struct nfs4_layoutcommit_args *args,
2009 struct compound_hdr *hdr)
2010 {
2011 __be32 *p;
2012
2013 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
2014 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
2015
2016 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
2017 p = reserve_space(xdr, 20);
2018 /* Only whole file layouts */
2019 p = xdr_encode_hyper(p, 0); /* offset */
2020 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
2021 *p = cpu_to_be32(0); /* reclaim */
2022 encode_nfs4_stateid(xdr, &args->stateid);
2023 if (args->lastbytewritten != U64_MAX) {
2024 p = reserve_space(xdr, 20);
2025 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
2026 p = xdr_encode_hyper(p, args->lastbytewritten);
2027 } else {
2028 p = reserve_space(xdr, 12);
2029 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2030 }
2031 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2032 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2033
2034 encode_uint32(xdr, args->layoutupdate_len);
2035 if (args->layoutupdate_pages)
2036 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2037 args->layoutupdate_len);
2038
2039 return 0;
2040 }
2041
2042 static void
2043 encode_layoutreturn(struct xdr_stream *xdr,
2044 const struct nfs4_layoutreturn_args *args,
2045 struct compound_hdr *hdr)
2046 {
2047 __be32 *p;
2048
2049 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2050 p = reserve_space(xdr, 16);
2051 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2052 *p++ = cpu_to_be32(args->layout_type);
2053 *p++ = cpu_to_be32(args->range.iomode);
2054 *p = cpu_to_be32(RETURN_FILE);
2055 p = reserve_space(xdr, 16);
2056 p = xdr_encode_hyper(p, args->range.offset);
2057 p = xdr_encode_hyper(p, args->range.length);
2058 spin_lock(&args->inode->i_lock);
2059 encode_nfs4_stateid(xdr, &args->stateid);
2060 spin_unlock(&args->inode->i_lock);
2061 if (args->ld_private->ops && args->ld_private->ops->encode)
2062 args->ld_private->ops->encode(xdr, args, args->ld_private);
2063 else
2064 encode_uint32(xdr, 0);
2065 }
2066
2067 static int
2068 encode_secinfo_no_name(struct xdr_stream *xdr,
2069 const struct nfs41_secinfo_no_name_args *args,
2070 struct compound_hdr *hdr)
2071 {
2072 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2073 encode_uint32(xdr, args->style);
2074 return 0;
2075 }
2076
2077 static void encode_test_stateid(struct xdr_stream *xdr,
2078 const struct nfs41_test_stateid_args *args,
2079 struct compound_hdr *hdr)
2080 {
2081 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2082 encode_uint32(xdr, 1);
2083 encode_nfs4_stateid(xdr, args->stateid);
2084 }
2085
2086 static void encode_free_stateid(struct xdr_stream *xdr,
2087 const struct nfs41_free_stateid_args *args,
2088 struct compound_hdr *hdr)
2089 {
2090 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2091 encode_nfs4_stateid(xdr, &args->stateid);
2092 }
2093 #else
2094 static inline void
2095 encode_layoutreturn(struct xdr_stream *xdr,
2096 const struct nfs4_layoutreturn_args *args,
2097 struct compound_hdr *hdr)
2098 {
2099 }
2100
2101 static void
2102 encode_layoutget(struct xdr_stream *xdr,
2103 const struct nfs4_layoutget_args *args,
2104 struct compound_hdr *hdr)
2105 {
2106 }
2107 #endif /* CONFIG_NFS_V4_1 */
2108
2109 /*
2110 * END OF "GENERIC" ENCODE ROUTINES.
2111 */
2112
2113 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2114 {
2115 #if defined(CONFIG_NFS_V4_1)
2116 struct nfs4_session *session = args->sa_slot->table->session;
2117 if (session)
2118 return session->clp->cl_mvops->minor_version;
2119 #endif /* CONFIG_NFS_V4_1 */
2120 return 0;
2121 }
2122
2123 /*
2124 * Encode an ACCESS request
2125 */
2126 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2127 const void *data)
2128 {
2129 const struct nfs4_accessargs *args = data;
2130 struct compound_hdr hdr = {
2131 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2132 };
2133
2134 encode_compound_hdr(xdr, req, &hdr);
2135 encode_sequence(xdr, &args->seq_args, &hdr);
2136 encode_putfh(xdr, args->fh, &hdr);
2137 encode_access(xdr, args->access, &hdr);
2138 if (args->bitmask)
2139 encode_getfattr(xdr, args->bitmask, &hdr);
2140 encode_nops(&hdr);
2141 }
2142
2143 /*
2144 * Encode LOOKUP request
2145 */
2146 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2147 const void *data)
2148 {
2149 const struct nfs4_lookup_arg *args = data;
2150 struct compound_hdr hdr = {
2151 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2152 };
2153
2154 encode_compound_hdr(xdr, req, &hdr);
2155 encode_sequence(xdr, &args->seq_args, &hdr);
2156 encode_putfh(xdr, args->dir_fh, &hdr);
2157 encode_lookup(xdr, args->name, &hdr);
2158 encode_getfh(xdr, &hdr);
2159 encode_getfattr(xdr, args->bitmask, &hdr);
2160 encode_nops(&hdr);
2161 }
2162
2163 /*
2164 * Encode LOOKUPP request
2165 */
2166 static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr,
2167 const void *data)
2168 {
2169 const struct nfs4_lookupp_arg *args = data;
2170 struct compound_hdr hdr = {
2171 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2172 };
2173
2174 encode_compound_hdr(xdr, req, &hdr);
2175 encode_sequence(xdr, &args->seq_args, &hdr);
2176 encode_putfh(xdr, args->fh, &hdr);
2177 encode_lookupp(xdr, &hdr);
2178 encode_getfh(xdr, &hdr);
2179 encode_getfattr(xdr, args->bitmask, &hdr);
2180 encode_nops(&hdr);
2181 }
2182
2183 /*
2184 * Encode LOOKUP_ROOT request
2185 */
2186 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2187 struct xdr_stream *xdr,
2188 const void *data)
2189 {
2190 const struct nfs4_lookup_root_arg *args = data;
2191 struct compound_hdr hdr = {
2192 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2193 };
2194
2195 encode_compound_hdr(xdr, req, &hdr);
2196 encode_sequence(xdr, &args->seq_args, &hdr);
2197 encode_putrootfh(xdr, &hdr);
2198 encode_getfh(xdr, &hdr);
2199 encode_getfattr(xdr, args->bitmask, &hdr);
2200 encode_nops(&hdr);
2201 }
2202
2203 /*
2204 * Encode REMOVE request
2205 */
2206 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2207 const void *data)
2208 {
2209 const struct nfs_removeargs *args = data;
2210 struct compound_hdr hdr = {
2211 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2212 };
2213
2214 encode_compound_hdr(xdr, req, &hdr);
2215 encode_sequence(xdr, &args->seq_args, &hdr);
2216 encode_putfh(xdr, args->fh, &hdr);
2217 encode_remove(xdr, &args->name, &hdr);
2218 encode_nops(&hdr);
2219 }
2220
2221 /*
2222 * Encode RENAME request
2223 */
2224 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2225 const void *data)
2226 {
2227 const struct nfs_renameargs *args = data;
2228 struct compound_hdr hdr = {
2229 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2230 };
2231
2232 encode_compound_hdr(xdr, req, &hdr);
2233 encode_sequence(xdr, &args->seq_args, &hdr);
2234 encode_putfh(xdr, args->old_dir, &hdr);
2235 encode_savefh(xdr, &hdr);
2236 encode_putfh(xdr, args->new_dir, &hdr);
2237 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2238 encode_nops(&hdr);
2239 }
2240
2241 /*
2242 * Encode LINK request
2243 */
2244 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2245 const void *data)
2246 {
2247 const struct nfs4_link_arg *args = data;
2248 struct compound_hdr hdr = {
2249 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2250 };
2251
2252 encode_compound_hdr(xdr, req, &hdr);
2253 encode_sequence(xdr, &args->seq_args, &hdr);
2254 encode_putfh(xdr, args->fh, &hdr);
2255 encode_savefh(xdr, &hdr);
2256 encode_putfh(xdr, args->dir_fh, &hdr);
2257 encode_link(xdr, args->name, &hdr);
2258 encode_restorefh(xdr, &hdr);
2259 encode_getfattr(xdr, args->bitmask, &hdr);
2260 encode_nops(&hdr);
2261 }
2262
2263 /*
2264 * Encode CREATE request
2265 */
2266 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2267 const void *data)
2268 {
2269 const struct nfs4_create_arg *args = data;
2270 struct compound_hdr hdr = {
2271 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2272 };
2273
2274 encode_compound_hdr(xdr, req, &hdr);
2275 encode_sequence(xdr, &args->seq_args, &hdr);
2276 encode_putfh(xdr, args->dir_fh, &hdr);
2277 encode_create(xdr, args, &hdr);
2278 encode_getfh(xdr, &hdr);
2279 encode_getfattr(xdr, args->bitmask, &hdr);
2280 encode_nops(&hdr);
2281 }
2282
2283 /*
2284 * Encode SYMLINK request
2285 */
2286 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2287 const void *data)
2288 {
2289 const struct nfs4_create_arg *args = data;
2290
2291 nfs4_xdr_enc_create(req, xdr, args);
2292 }
2293
2294 /*
2295 * Encode GETATTR request
2296 */
2297 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2298 const void *data)
2299 {
2300 const struct nfs4_getattr_arg *args = data;
2301 struct compound_hdr hdr = {
2302 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2303 };
2304
2305 encode_compound_hdr(xdr, req, &hdr);
2306 encode_sequence(xdr, &args->seq_args, &hdr);
2307 encode_putfh(xdr, args->fh, &hdr);
2308 encode_getfattr(xdr, args->bitmask, &hdr);
2309 encode_nops(&hdr);
2310 }
2311
2312 /*
2313 * Encode a CLOSE request
2314 */
2315 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2316 const void *data)
2317 {
2318 const struct nfs_closeargs *args = data;
2319 struct compound_hdr hdr = {
2320 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2321 };
2322
2323 encode_compound_hdr(xdr, req, &hdr);
2324 encode_sequence(xdr, &args->seq_args, &hdr);
2325 encode_putfh(xdr, args->fh, &hdr);
2326 if (args->lr_args)
2327 encode_layoutreturn(xdr, args->lr_args, &hdr);
2328 if (args->bitmask != NULL)
2329 encode_getfattr(xdr, args->bitmask, &hdr);
2330 encode_close(xdr, args, &hdr);
2331 encode_nops(&hdr);
2332 }
2333
2334 /*
2335 * Encode an OPEN request
2336 */
2337 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2338 const void *data)
2339 {
2340 const struct nfs_openargs *args = data;
2341 struct compound_hdr hdr = {
2342 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2343 };
2344
2345 encode_compound_hdr(xdr, req, &hdr);
2346 encode_sequence(xdr, &args->seq_args, &hdr);
2347 encode_putfh(xdr, args->fh, &hdr);
2348 encode_open(xdr, args, &hdr);
2349 encode_getfh(xdr, &hdr);
2350 if (args->access)
2351 encode_access(xdr, args->access, &hdr);
2352 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2353 if (args->lg_args) {
2354 encode_layoutget(xdr, args->lg_args, &hdr);
2355 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2356 args->lg_args->layout.pglen,
2357 hdr.replen - pagepad_maxsz);
2358 }
2359 encode_nops(&hdr);
2360 }
2361
2362 /*
2363 * Encode an OPEN_CONFIRM request
2364 */
2365 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2366 struct xdr_stream *xdr,
2367 const void *data)
2368 {
2369 const struct nfs_open_confirmargs *args = data;
2370 struct compound_hdr hdr = {
2371 .nops = 0,
2372 };
2373
2374 encode_compound_hdr(xdr, req, &hdr);
2375 encode_putfh(xdr, args->fh, &hdr);
2376 encode_open_confirm(xdr, args, &hdr);
2377 encode_nops(&hdr);
2378 }
2379
2380 /*
2381 * Encode an OPEN request with no attributes.
2382 */
2383 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2384 struct xdr_stream *xdr,
2385 const void *data)
2386 {
2387 const struct nfs_openargs *args = data;
2388 struct compound_hdr hdr = {
2389 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2390 };
2391
2392 encode_compound_hdr(xdr, req, &hdr);
2393 encode_sequence(xdr, &args->seq_args, &hdr);
2394 encode_putfh(xdr, args->fh, &hdr);
2395 encode_open(xdr, args, &hdr);
2396 if (args->access)
2397 encode_access(xdr, args->access, &hdr);
2398 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2399 if (args->lg_args) {
2400 encode_layoutget(xdr, args->lg_args, &hdr);
2401 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0,
2402 args->lg_args->layout.pglen,
2403 hdr.replen - pagepad_maxsz);
2404 }
2405 encode_nops(&hdr);
2406 }
2407
2408 /*
2409 * Encode an OPEN_DOWNGRADE request
2410 */
2411 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2412 struct xdr_stream *xdr,
2413 const void *data)
2414 {
2415 const struct nfs_closeargs *args = data;
2416 struct compound_hdr hdr = {
2417 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2418 };
2419
2420 encode_compound_hdr(xdr, req, &hdr);
2421 encode_sequence(xdr, &args->seq_args, &hdr);
2422 encode_putfh(xdr, args->fh, &hdr);
2423 if (args->lr_args)
2424 encode_layoutreturn(xdr, args->lr_args, &hdr);
2425 encode_open_downgrade(xdr, args, &hdr);
2426 encode_nops(&hdr);
2427 }
2428
2429 /*
2430 * Encode a LOCK request
2431 */
2432 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2433 const void *data)
2434 {
2435 const struct nfs_lock_args *args = data;
2436 struct compound_hdr hdr = {
2437 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2438 };
2439
2440 encode_compound_hdr(xdr, req, &hdr);
2441 encode_sequence(xdr, &args->seq_args, &hdr);
2442 encode_putfh(xdr, args->fh, &hdr);
2443 encode_lock(xdr, args, &hdr);
2444 encode_nops(&hdr);
2445 }
2446
2447 /*
2448 * Encode a LOCKT request
2449 */
2450 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2451 const void *data)
2452 {
2453 const struct nfs_lockt_args *args = data;
2454 struct compound_hdr hdr = {
2455 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2456 };
2457
2458 encode_compound_hdr(xdr, req, &hdr);
2459 encode_sequence(xdr, &args->seq_args, &hdr);
2460 encode_putfh(xdr, args->fh, &hdr);
2461 encode_lockt(xdr, args, &hdr);
2462 encode_nops(&hdr);
2463 }
2464
2465 /*
2466 * Encode a LOCKU request
2467 */
2468 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2469 const void *data)
2470 {
2471 const struct nfs_locku_args *args = data;
2472 struct compound_hdr hdr = {
2473 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2474 };
2475
2476 encode_compound_hdr(xdr, req, &hdr);
2477 encode_sequence(xdr, &args->seq_args, &hdr);
2478 encode_putfh(xdr, args->fh, &hdr);
2479 encode_locku(xdr, args, &hdr);
2480 encode_nops(&hdr);
2481 }
2482
2483 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2484 struct xdr_stream *xdr,
2485 const void *data)
2486 {
2487 const struct nfs_release_lockowner_args *args = data;
2488 struct compound_hdr hdr = {
2489 .minorversion = 0,
2490 };
2491
2492 encode_compound_hdr(xdr, req, &hdr);
2493 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2494 encode_nops(&hdr);
2495 }
2496
2497 /*
2498 * Encode a READLINK request
2499 */
2500 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2501 const void *data)
2502 {
2503 const struct nfs4_readlink *args = data;
2504 struct compound_hdr hdr = {
2505 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2506 };
2507
2508 encode_compound_hdr(xdr, req, &hdr);
2509 encode_sequence(xdr, &args->seq_args, &hdr);
2510 encode_putfh(xdr, args->fh, &hdr);
2511 encode_readlink(xdr, args, req, &hdr);
2512
2513 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2514 args->pglen, hdr.replen - pagepad_maxsz);
2515 encode_nops(&hdr);
2516 }
2517
2518 /*
2519 * Encode a READDIR request
2520 */
2521 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2522 const void *data)
2523 {
2524 const struct nfs4_readdir_arg *args = data;
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2527 };
2528
2529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_readdir(xdr, args, req, &hdr);
2533
2534 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2535 args->count, hdr.replen - pagepad_maxsz);
2536 encode_nops(&hdr);
2537 }
2538
2539 /*
2540 * Encode a READ request
2541 */
2542 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2543 const void *data)
2544 {
2545 const struct nfs_pgio_args *args = data;
2546 struct compound_hdr hdr = {
2547 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2548 };
2549
2550 encode_compound_hdr(xdr, req, &hdr);
2551 encode_sequence(xdr, &args->seq_args, &hdr);
2552 encode_putfh(xdr, args->fh, &hdr);
2553 encode_read(xdr, args, &hdr);
2554
2555 rpc_prepare_reply_pages(req, args->pages, args->pgbase,
2556 args->count, hdr.replen - pagepad_maxsz);
2557 req->rq_rcv_buf.flags |= XDRBUF_READ;
2558 encode_nops(&hdr);
2559 }
2560
2561 /*
2562 * Encode an SETATTR request
2563 */
2564 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2565 const void *data)
2566 {
2567 const struct nfs_setattrargs *args = data;
2568 struct compound_hdr hdr = {
2569 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2570 };
2571
2572 encode_compound_hdr(xdr, req, &hdr);
2573 encode_sequence(xdr, &args->seq_args, &hdr);
2574 encode_putfh(xdr, args->fh, &hdr);
2575 encode_setattr(xdr, args, args->server, &hdr);
2576 encode_getfattr(xdr, args->bitmask, &hdr);
2577 encode_nops(&hdr);
2578 }
2579
2580 /*
2581 * Encode a GETACL request
2582 */
2583 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2584 const void *data)
2585 {
2586 const struct nfs_getaclargs *args = data;
2587 struct compound_hdr hdr = {
2588 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2589 };
2590 const __u32 nfs4_acl_bitmap[1] = {
2591 [0] = FATTR4_WORD0_ACL,
2592 };
2593 uint32_t replen;
2594
2595 encode_compound_hdr(xdr, req, &hdr);
2596 encode_sequence(xdr, &args->seq_args, &hdr);
2597 encode_putfh(xdr, args->fh, &hdr);
2598 replen = hdr.replen + op_decode_hdr_maxsz;
2599 encode_getattr(xdr, nfs4_acl_bitmap, NULL,
2600 ARRAY_SIZE(nfs4_acl_bitmap), &hdr);
2601
2602 rpc_prepare_reply_pages(req, args->acl_pages, 0,
2603 args->acl_len, replen);
2604 encode_nops(&hdr);
2605 }
2606
2607 /*
2608 * Encode a WRITE request
2609 */
2610 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2611 const void *data)
2612 {
2613 const struct nfs_pgio_args *args = data;
2614 struct compound_hdr hdr = {
2615 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2616 };
2617
2618 encode_compound_hdr(xdr, req, &hdr);
2619 encode_sequence(xdr, &args->seq_args, &hdr);
2620 encode_putfh(xdr, args->fh, &hdr);
2621 encode_write(xdr, args, &hdr);
2622 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2623 if (args->bitmask)
2624 encode_getfattr(xdr, args->bitmask, &hdr);
2625 encode_nops(&hdr);
2626 }
2627
2628 /*
2629 * a COMMIT request
2630 */
2631 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2632 const void *data)
2633 {
2634 const struct nfs_commitargs *args = data;
2635 struct compound_hdr hdr = {
2636 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2637 };
2638
2639 encode_compound_hdr(xdr, req, &hdr);
2640 encode_sequence(xdr, &args->seq_args, &hdr);
2641 encode_putfh(xdr, args->fh, &hdr);
2642 encode_commit(xdr, args, &hdr);
2643 encode_nops(&hdr);
2644 }
2645
2646 /*
2647 * FSINFO request
2648 */
2649 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2650 const void *data)
2651 {
2652 const struct nfs4_fsinfo_arg *args = data;
2653 struct compound_hdr hdr = {
2654 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2655 };
2656
2657 encode_compound_hdr(xdr, req, &hdr);
2658 encode_sequence(xdr, &args->seq_args, &hdr);
2659 encode_putfh(xdr, args->fh, &hdr);
2660 encode_fsinfo(xdr, args->bitmask, &hdr);
2661 encode_nops(&hdr);
2662 }
2663
2664 /*
2665 * a PATHCONF request
2666 */
2667 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2668 const void *data)
2669 {
2670 const struct nfs4_pathconf_arg *args = data;
2671 struct compound_hdr hdr = {
2672 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2673 };
2674
2675 encode_compound_hdr(xdr, req, &hdr);
2676 encode_sequence(xdr, &args->seq_args, &hdr);
2677 encode_putfh(xdr, args->fh, &hdr);
2678 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask,
2679 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr);
2680 encode_nops(&hdr);
2681 }
2682
2683 /*
2684 * a STATFS request
2685 */
2686 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2687 const void *data)
2688 {
2689 const struct nfs4_statfs_arg *args = data;
2690 struct compound_hdr hdr = {
2691 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2692 };
2693
2694 encode_compound_hdr(xdr, req, &hdr);
2695 encode_sequence(xdr, &args->seq_args, &hdr);
2696 encode_putfh(xdr, args->fh, &hdr);
2697 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask,
2698 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr);
2699 encode_nops(&hdr);
2700 }
2701
2702 /*
2703 * GETATTR_BITMAP request
2704 */
2705 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2706 struct xdr_stream *xdr,
2707 const void *data)
2708 {
2709 const struct nfs4_server_caps_arg *args = data;
2710 const u32 *bitmask = args->bitmask;
2711 struct compound_hdr hdr = {
2712 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2713 };
2714
2715 encode_compound_hdr(xdr, req, &hdr);
2716 encode_sequence(xdr, &args->seq_args, &hdr);
2717 encode_putfh(xdr, args->fhandle, &hdr);
2718 encode_getattr(xdr, bitmask, NULL, 3, &hdr);
2719 encode_nops(&hdr);
2720 }
2721
2722 /*
2723 * a RENEW request
2724 */
2725 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2726 const void *data)
2727
2728 {
2729 const struct nfs_client *clp = data;
2730 struct compound_hdr hdr = {
2731 .nops = 0,
2732 };
2733
2734 encode_compound_hdr(xdr, req, &hdr);
2735 encode_renew(xdr, clp->cl_clientid, &hdr);
2736 encode_nops(&hdr);
2737 }
2738
2739 /*
2740 * a SETCLIENTID request
2741 */
2742 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2743 struct xdr_stream *xdr,
2744 const void *data)
2745 {
2746 const struct nfs4_setclientid *sc = data;
2747 struct compound_hdr hdr = {
2748 .nops = 0,
2749 };
2750
2751 encode_compound_hdr(xdr, req, &hdr);
2752 encode_setclientid(xdr, sc, &hdr);
2753 encode_nops(&hdr);
2754 }
2755
2756 /*
2757 * a SETCLIENTID_CONFIRM request
2758 */
2759 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2760 struct xdr_stream *xdr,
2761 const void *data)
2762 {
2763 const struct nfs4_setclientid_res *arg = data;
2764 struct compound_hdr hdr = {
2765 .nops = 0,
2766 };
2767
2768 encode_compound_hdr(xdr, req, &hdr);
2769 encode_setclientid_confirm(xdr, arg, &hdr);
2770 encode_nops(&hdr);
2771 }
2772
2773 /*
2774 * DELEGRETURN request
2775 */
2776 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2777 struct xdr_stream *xdr,
2778 const void *data)
2779 {
2780 const struct nfs4_delegreturnargs *args = data;
2781 struct compound_hdr hdr = {
2782 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2783 };
2784
2785 encode_compound_hdr(xdr, req, &hdr);
2786 encode_sequence(xdr, &args->seq_args, &hdr);
2787 encode_putfh(xdr, args->fhandle, &hdr);
2788 if (args->lr_args)
2789 encode_layoutreturn(xdr, args->lr_args, &hdr);
2790 if (args->bitmask)
2791 encode_getfattr(xdr, args->bitmask, &hdr);
2792 encode_delegreturn(xdr, args->stateid, &hdr);
2793 encode_nops(&hdr);
2794 }
2795
2796 /*
2797 * Encode FS_LOCATIONS request
2798 */
2799 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2800 struct xdr_stream *xdr,
2801 const void *data)
2802 {
2803 const struct nfs4_fs_locations_arg *args = data;
2804 struct compound_hdr hdr = {
2805 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2806 };
2807 uint32_t replen;
2808
2809 encode_compound_hdr(xdr, req, &hdr);
2810 encode_sequence(xdr, &args->seq_args, &hdr);
2811 if (args->migration) {
2812 encode_putfh(xdr, args->fh, &hdr);
2813 replen = hdr.replen;
2814 encode_fs_locations(xdr, args->bitmask, &hdr);
2815 if (args->renew)
2816 encode_renew(xdr, args->clientid, &hdr);
2817 } else {
2818 encode_putfh(xdr, args->dir_fh, &hdr);
2819 encode_lookup(xdr, args->name, &hdr);
2820 replen = hdr.replen;
2821 encode_fs_locations(xdr, args->bitmask, &hdr);
2822 }
2823
2824 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0,
2825 PAGE_SIZE, replen);
2826 encode_nops(&hdr);
2827 }
2828
2829 /*
2830 * Encode SECINFO request
2831 */
2832 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2833 struct xdr_stream *xdr,
2834 const void *data)
2835 {
2836 const struct nfs4_secinfo_arg *args = data;
2837 struct compound_hdr hdr = {
2838 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2839 };
2840
2841 encode_compound_hdr(xdr, req, &hdr);
2842 encode_sequence(xdr, &args->seq_args, &hdr);
2843 encode_putfh(xdr, args->dir_fh, &hdr);
2844 encode_secinfo(xdr, args->name, &hdr);
2845 encode_nops(&hdr);
2846 }
2847
2848 /*
2849 * Encode FSID_PRESENT request
2850 */
2851 static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2852 struct xdr_stream *xdr,
2853 const void *data)
2854 {
2855 const struct nfs4_fsid_present_arg *args = data;
2856 struct compound_hdr hdr = {
2857 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2858 };
2859
2860 encode_compound_hdr(xdr, req, &hdr);
2861 encode_sequence(xdr, &args->seq_args, &hdr);
2862 encode_putfh(xdr, args->fh, &hdr);
2863 encode_getfh(xdr, &hdr);
2864 if (args->renew)
2865 encode_renew(xdr, args->clientid, &hdr);
2866 encode_nops(&hdr);
2867 }
2868
2869 #if defined(CONFIG_NFS_V4_1)
2870 /*
2871 * BIND_CONN_TO_SESSION request
2872 */
2873 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2874 struct xdr_stream *xdr,
2875 const void *data)
2876 {
2877 const struct nfs41_bind_conn_to_session_args *args = data;
2878 struct compound_hdr hdr = {
2879 .minorversion = args->client->cl_mvops->minor_version,
2880 };
2881
2882 encode_compound_hdr(xdr, req, &hdr);
2883 encode_bind_conn_to_session(xdr, args, &hdr);
2884 encode_nops(&hdr);
2885 }
2886
2887 /*
2888 * EXCHANGE_ID request
2889 */
2890 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2891 struct xdr_stream *xdr,
2892 const void *data)
2893 {
2894 const struct nfs41_exchange_id_args *args = data;
2895 struct compound_hdr hdr = {
2896 .minorversion = args->client->cl_mvops->minor_version,
2897 };
2898
2899 encode_compound_hdr(xdr, req, &hdr);
2900 encode_exchange_id(xdr, args, &hdr);
2901 encode_nops(&hdr);
2902 }
2903
2904 /*
2905 * a CREATE_SESSION request
2906 */
2907 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2908 struct xdr_stream *xdr,
2909 const void *data)
2910 {
2911 const struct nfs41_create_session_args *args = data;
2912 struct compound_hdr hdr = {
2913 .minorversion = args->client->cl_mvops->minor_version,
2914 };
2915
2916 encode_compound_hdr(xdr, req, &hdr);
2917 encode_create_session(xdr, args, &hdr);
2918 encode_nops(&hdr);
2919 }
2920
2921 /*
2922 * a DESTROY_SESSION request
2923 */
2924 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2925 struct xdr_stream *xdr,
2926 const void *data)
2927 {
2928 const struct nfs4_session *session = data;
2929 struct compound_hdr hdr = {
2930 .minorversion = session->clp->cl_mvops->minor_version,
2931 };
2932
2933 encode_compound_hdr(xdr, req, &hdr);
2934 encode_destroy_session(xdr, session, &hdr);
2935 encode_nops(&hdr);
2936 }
2937
2938 /*
2939 * a DESTROY_CLIENTID request
2940 */
2941 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2942 struct xdr_stream *xdr,
2943 const void *data)
2944 {
2945 const struct nfs_client *clp = data;
2946 struct compound_hdr hdr = {
2947 .minorversion = clp->cl_mvops->minor_version,
2948 };
2949
2950 encode_compound_hdr(xdr, req, &hdr);
2951 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2952 encode_nops(&hdr);
2953 }
2954
2955 /*
2956 * a SEQUENCE request
2957 */
2958 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2959 const void *data)
2960 {
2961 const struct nfs4_sequence_args *args = data;
2962 struct compound_hdr hdr = {
2963 .minorversion = nfs4_xdr_minorversion(args),
2964 };
2965
2966 encode_compound_hdr(xdr, req, &hdr);
2967 encode_sequence(xdr, args, &hdr);
2968 encode_nops(&hdr);
2969 }
2970
2971 #endif
2972
2973 /*
2974 * a GET_LEASE_TIME request
2975 */
2976 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2977 struct xdr_stream *xdr,
2978 const void *data)
2979 {
2980 const struct nfs4_get_lease_time_args *args = data;
2981 struct compound_hdr hdr = {
2982 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2983 };
2984 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2985
2986 encode_compound_hdr(xdr, req, &hdr);
2987 encode_sequence(xdr, &args->la_seq_args, &hdr);
2988 encode_putrootfh(xdr, &hdr);
2989 encode_fsinfo(xdr, lease_bitmap, &hdr);
2990 encode_nops(&hdr);
2991 }
2992
2993 #ifdef CONFIG_NFS_V4_1
2994
2995 /*
2996 * a RECLAIM_COMPLETE request
2997 */
2998 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2999 struct xdr_stream *xdr,
3000 const void *data)
3001 {
3002 const struct nfs41_reclaim_complete_args *args = data;
3003 struct compound_hdr hdr = {
3004 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
3005 };
3006
3007 encode_compound_hdr(xdr, req, &hdr);
3008 encode_sequence(xdr, &args->seq_args, &hdr);
3009 encode_reclaim_complete(xdr, args, &hdr);
3010 encode_nops(&hdr);
3011 }
3012
3013 /*
3014 * Encode GETDEVICEINFO request
3015 */
3016 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
3017 struct xdr_stream *xdr,
3018 const void *data)
3019 {
3020 const struct nfs4_getdeviceinfo_args *args = data;
3021 struct compound_hdr hdr = {
3022 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3023 };
3024 uint32_t replen;
3025
3026 encode_compound_hdr(xdr, req, &hdr);
3027 encode_sequence(xdr, &args->seq_args, &hdr);
3028
3029 replen = hdr.replen + op_decode_hdr_maxsz + 2;
3030
3031 encode_getdeviceinfo(xdr, args, &hdr);
3032
3033 /* set up reply kvec. device_addr4 opaque data is read into the
3034 * pages */
3035 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase,
3036 args->pdev->pglen, replen);
3037 encode_nops(&hdr);
3038 }
3039
3040 /*
3041 * Encode LAYOUTGET request
3042 */
3043 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
3044 struct xdr_stream *xdr,
3045 const void *data)
3046 {
3047 const struct nfs4_layoutget_args *args = data;
3048 struct compound_hdr hdr = {
3049 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3050 };
3051
3052 encode_compound_hdr(xdr, req, &hdr);
3053 encode_sequence(xdr, &args->seq_args, &hdr);
3054 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3055 encode_layoutget(xdr, args, &hdr);
3056
3057 rpc_prepare_reply_pages(req, args->layout.pages, 0,
3058 args->layout.pglen, hdr.replen - pagepad_maxsz);
3059 encode_nops(&hdr);
3060 }
3061
3062 /*
3063 * Encode LAYOUTCOMMIT request
3064 */
3065 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
3066 struct xdr_stream *xdr,
3067 const void *priv)
3068 {
3069 const struct nfs4_layoutcommit_args *args = priv;
3070 struct nfs4_layoutcommit_data *data =
3071 container_of(args, struct nfs4_layoutcommit_data, args);
3072 struct compound_hdr hdr = {
3073 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3074 };
3075
3076 encode_compound_hdr(xdr, req, &hdr);
3077 encode_sequence(xdr, &args->seq_args, &hdr);
3078 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3079 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
3080 encode_getfattr(xdr, args->bitmask, &hdr);
3081 encode_nops(&hdr);
3082 }
3083
3084 /*
3085 * Encode LAYOUTRETURN request
3086 */
3087 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
3088 struct xdr_stream *xdr,
3089 const void *data)
3090 {
3091 const struct nfs4_layoutreturn_args *args = data;
3092 struct compound_hdr hdr = {
3093 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3094 };
3095
3096 encode_compound_hdr(xdr, req, &hdr);
3097 encode_sequence(xdr, &args->seq_args, &hdr);
3098 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3099 encode_layoutreturn(xdr, args, &hdr);
3100 encode_nops(&hdr);
3101 }
3102
3103 /*
3104 * Encode SECINFO_NO_NAME request
3105 */
3106 static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3107 struct xdr_stream *xdr,
3108 const void *data)
3109 {
3110 const struct nfs41_secinfo_no_name_args *args = data;
3111 struct compound_hdr hdr = {
3112 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3113 };
3114
3115 encode_compound_hdr(xdr, req, &hdr);
3116 encode_sequence(xdr, &args->seq_args, &hdr);
3117 encode_putrootfh(xdr, &hdr);
3118 encode_secinfo_no_name(xdr, args, &hdr);
3119 encode_nops(&hdr);
3120 }
3121
3122 /*
3123 * Encode TEST_STATEID request
3124 */
3125 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3126 struct xdr_stream *xdr,
3127 const void *data)
3128 {
3129 const struct nfs41_test_stateid_args *args = data;
3130 struct compound_hdr hdr = {
3131 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3132 };
3133
3134 encode_compound_hdr(xdr, req, &hdr);
3135 encode_sequence(xdr, &args->seq_args, &hdr);
3136 encode_test_stateid(xdr, args, &hdr);
3137 encode_nops(&hdr);
3138 }
3139
3140 /*
3141 * Encode FREE_STATEID request
3142 */
3143 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3144 struct xdr_stream *xdr,
3145 const void *data)
3146 {
3147 const struct nfs41_free_stateid_args *args = data;
3148 struct compound_hdr hdr = {
3149 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3150 };
3151
3152 encode_compound_hdr(xdr, req, &hdr);
3153 encode_sequence(xdr, &args->seq_args, &hdr);
3154 encode_free_stateid(xdr, args, &hdr);
3155 encode_nops(&hdr);
3156 }
3157 #endif /* CONFIG_NFS_V4_1 */
3158
3159 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3160 {
3161 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string,
3162 NFS4_OPAQUE_LIMIT);
3163 if (unlikely(ret < 0))
3164 return -EIO;
3165 *len = ret;
3166 return 0;
3167 }
3168
3169 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3170 {
3171 __be32 *p;
3172
3173 p = xdr_inline_decode(xdr, 8);
3174 if (unlikely(!p))
3175 return -EIO;
3176 hdr->status = be32_to_cpup(p++);
3177 hdr->taglen = be32_to_cpup(p);
3178
3179 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3180 if (unlikely(!p))
3181 return -EIO;
3182 hdr->tag = (char *)p;
3183 p += XDR_QUADLEN(hdr->taglen);
3184 hdr->nops = be32_to_cpup(p);
3185 if (unlikely(hdr->nops < 1))
3186 return nfs4_stat_to_errno(hdr->status);
3187 return 0;
3188 }
3189
3190 static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3191 int *nfs_retval)
3192 {
3193 __be32 *p;
3194 uint32_t opnum;
3195 int32_t nfserr;
3196
3197 p = xdr_inline_decode(xdr, 8);
3198 if (unlikely(!p))
3199 goto out_overflow;
3200 opnum = be32_to_cpup(p++);
3201 if (unlikely(opnum != expected))
3202 goto out_bad_operation;
3203 if (unlikely(*p != cpu_to_be32(NFS_OK)))
3204 goto out_status;
3205 *nfs_retval = 0;
3206 return true;
3207 out_status:
3208 nfserr = be32_to_cpup(p);
3209 trace_nfs4_xdr_status(xdr, opnum, nfserr);
3210 *nfs_retval = nfs4_stat_to_errno(nfserr);
3211 return true;
3212 out_bad_operation:
3213 trace_nfs4_xdr_bad_operation(xdr, opnum, expected);
3214 *nfs_retval = -EREMOTEIO;
3215 return false;
3216 out_overflow:
3217 *nfs_retval = -EIO;
3218 return false;
3219 }
3220
3221 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3222 {
3223 int retval;
3224
3225 __decode_op_hdr(xdr, expected, &retval);
3226 return retval;
3227 }
3228
3229 /* Dummy routine */
3230 static int decode_ace(struct xdr_stream *xdr, void *ace)
3231 {
3232 __be32 *p;
3233 unsigned int strlen;
3234 char *str;
3235
3236 p = xdr_inline_decode(xdr, 12);
3237 if (unlikely(!p))
3238 return -EIO;
3239 return decode_opaque_inline(xdr, &strlen, &str);
3240 }
3241
3242 static ssize_t
3243 decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz)
3244 {
3245 ssize_t ret;
3246
3247 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz);
3248 if (likely(ret >= 0))
3249 return ret;
3250 if (ret != -EMSGSIZE)
3251 return -EIO;
3252 return sz;
3253 }
3254
3255 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3256 {
3257 ssize_t ret;
3258 ret = decode_bitmap4(xdr, bitmap, 3);
3259 return ret < 0 ? ret : 0;
3260 }
3261
3262 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3263 {
3264 __be32 *p;
3265
3266 p = xdr_inline_decode(xdr, 4);
3267 if (unlikely(!p))
3268 return -EIO;
3269 *attrlen = be32_to_cpup(p);
3270 *savep = xdr_stream_pos(xdr);
3271 return 0;
3272 }
3273
3274 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3275 {
3276 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3277 int ret;
3278 ret = decode_attr_bitmap(xdr, bitmask);
3279 if (unlikely(ret < 0))
3280 return ret;
3281 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3282 } else
3283 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3284 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3285 bitmask[0], bitmask[1], bitmask[2]);
3286 return 0;
3287 }
3288
3289 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3290 {
3291 __be32 *p;
3292 int ret = 0;
3293
3294 *type = 0;
3295 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3296 return -EIO;
3297 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3298 p = xdr_inline_decode(xdr, 4);
3299 if (unlikely(!p))
3300 return -EIO;
3301 *type = be32_to_cpup(p);
3302 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3303 dprintk("%s: bad type %d\n", __func__, *type);
3304 return -EIO;
3305 }
3306 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3307 ret = NFS_ATTR_FATTR_TYPE;
3308 }
3309 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3310 return ret;
3311 }
3312
3313 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3314 uint32_t *bitmap, uint32_t *type)
3315 {
3316 __be32 *p;
3317
3318 *type = 0;
3319 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3320 return -EIO;
3321 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3322 p = xdr_inline_decode(xdr, 4);
3323 if (unlikely(!p))
3324 return -EIO;
3325 *type = be32_to_cpup(p);
3326 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3327 }
3328 dprintk("%s: expire type=0x%x\n", __func__, *type);
3329 return 0;
3330 }
3331
3332 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3333 {
3334 __be32 *p;
3335 int ret = 0;
3336
3337 *change = 0;
3338 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3339 return -EIO;
3340 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3341 p = xdr_inline_decode(xdr, 8);
3342 if (unlikely(!p))
3343 return -EIO;
3344 xdr_decode_hyper(p, change);
3345 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3346 ret = NFS_ATTR_FATTR_CHANGE;
3347 }
3348 dprintk("%s: change attribute=%Lu\n", __func__,
3349 (unsigned long long)*change);
3350 return ret;
3351 }
3352
3353 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3354 {
3355 __be32 *p;
3356 int ret = 0;
3357
3358 *size = 0;
3359 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3360 return -EIO;
3361 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3362 p = xdr_inline_decode(xdr, 8);
3363 if (unlikely(!p))
3364 return -EIO;
3365 xdr_decode_hyper(p, size);
3366 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3367 ret = NFS_ATTR_FATTR_SIZE;
3368 }
3369 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3370 return ret;
3371 }
3372
3373 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3374 {
3375 __be32 *p;
3376
3377 *res = 0;
3378 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3379 return -EIO;
3380 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3381 p = xdr_inline_decode(xdr, 4);
3382 if (unlikely(!p))
3383 return -EIO;
3384 *res = be32_to_cpup(p);
3385 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3386 }
3387 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3388 return 0;
3389 }
3390
3391 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3392 {
3393 __be32 *p;
3394
3395 *res = 0;
3396 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3397 return -EIO;
3398 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3399 p = xdr_inline_decode(xdr, 4);
3400 if (unlikely(!p))
3401 return -EIO;
3402 *res = be32_to_cpup(p);
3403 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3404 }
3405 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3406 return 0;
3407 }
3408
3409 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3410 {
3411 __be32 *p;
3412 int ret = 0;
3413
3414 fsid->major = 0;
3415 fsid->minor = 0;
3416 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3417 return -EIO;
3418 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3419 p = xdr_inline_decode(xdr, 16);
3420 if (unlikely(!p))
3421 return -EIO;
3422 p = xdr_decode_hyper(p, &fsid->major);
3423 xdr_decode_hyper(p, &fsid->minor);
3424 bitmap[0] &= ~FATTR4_WORD0_FSID;
3425 ret = NFS_ATTR_FATTR_FSID;
3426 }
3427 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3428 (unsigned long long)fsid->major,
3429 (unsigned long long)fsid->minor);
3430 return ret;
3431 }
3432
3433 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3434 {
3435 __be32 *p;
3436
3437 *res = 60;
3438 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3439 return -EIO;
3440 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3441 p = xdr_inline_decode(xdr, 4);
3442 if (unlikely(!p))
3443 return -EIO;
3444 *res = be32_to_cpup(p);
3445 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3446 }
3447 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res);
3448 return 0;
3449 }
3450
3451 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3452 {
3453 __be32 *p;
3454
3455 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3456 return -EIO;
3457 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3458 p = xdr_inline_decode(xdr, 4);
3459 if (unlikely(!p))
3460 return -EIO;
3461 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3462 *res = -be32_to_cpup(p);
3463 }
3464 return 0;
3465 }
3466
3467 static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3468 uint32_t *bitmap, uint32_t *bitmask)
3469 {
3470 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3471 int ret;
3472 ret = decode_attr_bitmap(xdr, bitmask);
3473 if (unlikely(ret < 0))
3474 return ret;
3475 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3476 } else
3477 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3478 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3479 bitmask[0], bitmask[1], bitmask[2]);
3480 return 0;
3481 }
3482
3483 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3484 {
3485 __be32 *p;
3486 u32 len;
3487
3488 if (fh != NULL)
3489 memset(fh, 0, sizeof(*fh));
3490
3491 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3492 return -EIO;
3493 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3494 p = xdr_inline_decode(xdr, 4);
3495 if (unlikely(!p))
3496 return -EIO;
3497 len = be32_to_cpup(p);
3498 if (len > NFS4_FHSIZE)
3499 return -EIO;
3500 p = xdr_inline_decode(xdr, len);
3501 if (unlikely(!p))
3502 return -EIO;
3503 if (fh != NULL) {
3504 memcpy(fh->data, p, len);
3505 fh->size = len;
3506 }
3507 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3508 }
3509 return 0;
3510 }
3511
3512 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3513 {
3514 __be32 *p;
3515
3516 *res = 0;
3517 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3518 return -EIO;
3519 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3520 p = xdr_inline_decode(xdr, 4);
3521 if (unlikely(!p))
3522 return -EIO;
3523 *res = be32_to_cpup(p);
3524 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3525 }
3526 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3527 return 0;
3528 }
3529
3530 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3531 {
3532 __be32 *p;
3533 int ret = 0;
3534
3535 *fileid = 0;
3536 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3537 return -EIO;
3538 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3539 p = xdr_inline_decode(xdr, 8);
3540 if (unlikely(!p))
3541 return -EIO;
3542 xdr_decode_hyper(p, fileid);
3543 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3544 ret = NFS_ATTR_FATTR_FILEID;
3545 }
3546 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3547 return ret;
3548 }
3549
3550 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3551 {
3552 __be32 *p;
3553 int ret = 0;
3554
3555 *fileid = 0;
3556 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3557 return -EIO;
3558 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3559 p = xdr_inline_decode(xdr, 8);
3560 if (unlikely(!p))
3561 return -EIO;
3562 xdr_decode_hyper(p, fileid);
3563 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3564 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3565 }
3566 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3567 return ret;
3568 }
3569
3570 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3571 {
3572 __be32 *p;
3573 int status = 0;
3574
3575 *res = 0;
3576 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3577 return -EIO;
3578 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3579 p = xdr_inline_decode(xdr, 8);
3580 if (unlikely(!p))
3581 return -EIO;
3582 xdr_decode_hyper(p, res);
3583 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3584 }
3585 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3586 return status;
3587 }
3588
3589 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3590 {
3591 __be32 *p;
3592 int status = 0;
3593
3594 *res = 0;
3595 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3596 return -EIO;
3597 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3598 p = xdr_inline_decode(xdr, 8);
3599 if (unlikely(!p))
3600 return -EIO;
3601 xdr_decode_hyper(p, res);
3602 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3603 }
3604 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3605 return status;
3606 }
3607
3608 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3609 {
3610 __be32 *p;
3611 int status = 0;
3612
3613 *res = 0;
3614 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3615 return -EIO;
3616 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3617 p = xdr_inline_decode(xdr, 8);
3618 if (unlikely(!p))
3619 return -EIO;
3620 xdr_decode_hyper(p, res);
3621 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3622 }
3623 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3624 return status;
3625 }
3626
3627 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3628 {
3629 u32 n;
3630 __be32 *p;
3631 int status = 0;
3632
3633 p = xdr_inline_decode(xdr, 4);
3634 if (unlikely(!p))
3635 return -EIO;
3636 n = be32_to_cpup(p);
3637 if (n == 0)
3638 goto root_path;
3639 dprintk("pathname4: ");
3640 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3641 dprintk("cannot parse %d components in path\n", n);
3642 goto out_eio;
3643 }
3644 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3645 struct nfs4_string *component = &path->components[path->ncomponents];
3646 status = decode_opaque_inline(xdr, &component->len, &component->data);
3647 if (unlikely(status != 0))
3648 goto out_eio;
3649 ifdebug (XDR)
3650 pr_cont("%s%.*s ",
3651 (path->ncomponents != n ? "/ " : ""),
3652 component->len, component->data);
3653 }
3654 out:
3655 return status;
3656 root_path:
3657 /* a root pathname is sent as a zero component4 */
3658 path->ncomponents = 1;
3659 path->components[0].len=0;
3660 path->components[0].data=NULL;
3661 dprintk("pathname4: /\n");
3662 goto out;
3663 out_eio:
3664 dprintk(" status %d", status);
3665 status = -EIO;
3666 goto out;
3667 }
3668
3669 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3670 {
3671 int n;
3672 __be32 *p;
3673 int status = -EIO;
3674
3675 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3676 goto out;
3677 status = 0;
3678 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3679 goto out;
3680 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3681 status = -EIO;
3682 /* Ignore borken servers that return unrequested attrs */
3683 if (unlikely(res == NULL))
3684 goto out;
3685 dprintk("%s: fsroot:\n", __func__);
3686 status = decode_pathname(xdr, &res->fs_path);
3687 if (unlikely(status != 0))
3688 goto out;
3689 p = xdr_inline_decode(xdr, 4);
3690 if (unlikely(!p))
3691 goto out_eio;
3692 n = be32_to_cpup(p);
3693 if (n <= 0)
3694 goto out_eio;
3695 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3696 u32 m;
3697 struct nfs4_fs_location *loc;
3698
3699 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3700 break;
3701 loc = &res->locations[res->nlocations];
3702 p = xdr_inline_decode(xdr, 4);
3703 if (unlikely(!p))
3704 goto out_eio;
3705 m = be32_to_cpup(p);
3706
3707 dprintk("%s: servers:\n", __func__);
3708 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3709 struct nfs4_string *server;
3710
3711 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3712 unsigned int i;
3713 dprintk("%s: using first %u of %u servers "
3714 "returned for location %u\n",
3715 __func__,
3716 NFS4_FS_LOCATION_MAXSERVERS,
3717 m, res->nlocations);
3718 for (i = loc->nservers; i < m; i++) {
3719 unsigned int len;
3720 char *data;
3721 status = decode_opaque_inline(xdr, &len, &data);
3722 if (unlikely(status != 0))
3723 goto out_eio;
3724 }
3725 break;
3726 }
3727 server = &loc->servers[loc->nservers];
3728 status = decode_opaque_inline(xdr, &server->len, &server->data);
3729 if (unlikely(status != 0))
3730 goto out_eio;
3731 dprintk("%s ", server->data);
3732 }
3733 status = decode_pathname(xdr, &loc->rootpath);
3734 if (unlikely(status != 0))
3735 goto out_eio;
3736 }
3737 if (res->nlocations != 0)
3738 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3739 out:
3740 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3741 return status;
3742 out_eio:
3743 status = -EIO;
3744 goto out;
3745 }
3746
3747 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3748 {
3749 __be32 *p;
3750 int status = 0;
3751
3752 *res = 0;
3753 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3754 return -EIO;
3755 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3756 p = xdr_inline_decode(xdr, 8);
3757 if (unlikely(!p))
3758 return -EIO;
3759 xdr_decode_hyper(p, res);
3760 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3761 }
3762 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3763 return status;
3764 }
3765
3766 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3767 {
3768 __be32 *p;
3769 int status = 0;
3770
3771 *maxlink = 1;
3772 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3773 return -EIO;
3774 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3775 p = xdr_inline_decode(xdr, 4);
3776 if (unlikely(!p))
3777 return -EIO;
3778 *maxlink = be32_to_cpup(p);
3779 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3780 }
3781 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3782 return status;
3783 }
3784
3785 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3786 {
3787 __be32 *p;
3788 int status = 0;
3789
3790 *maxname = 1024;
3791 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3792 return -EIO;
3793 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3794 p = xdr_inline_decode(xdr, 4);
3795 if (unlikely(!p))
3796 return -EIO;
3797 *maxname = be32_to_cpup(p);
3798 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3799 }
3800 dprintk("%s: maxname=%u\n", __func__, *maxname);
3801 return status;
3802 }
3803
3804 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3805 {
3806 __be32 *p;
3807 int status = 0;
3808
3809 *res = 1024;
3810 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3811 return -EIO;
3812 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3813 uint64_t maxread;
3814 p = xdr_inline_decode(xdr, 8);
3815 if (unlikely(!p))
3816 return -EIO;
3817 xdr_decode_hyper(p, &maxread);
3818 if (maxread > 0x7FFFFFFF)
3819 maxread = 0x7FFFFFFF;
3820 *res = (uint32_t)maxread;
3821 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3822 }
3823 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3824 return status;
3825 }
3826
3827 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3828 {
3829 __be32 *p;
3830 int status = 0;
3831
3832 *res = 1024;
3833 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3834 return -EIO;
3835 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3836 uint64_t maxwrite;
3837 p = xdr_inline_decode(xdr, 8);
3838 if (unlikely(!p))
3839 return -EIO;
3840 xdr_decode_hyper(p, &maxwrite);
3841 if (maxwrite > 0x7FFFFFFF)
3842 maxwrite = 0x7FFFFFFF;
3843 *res = (uint32_t)maxwrite;
3844 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3845 }
3846 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3847 return status;
3848 }
3849
3850 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3851 {
3852 uint32_t tmp;
3853 __be32 *p;
3854 int ret = 0;
3855
3856 *mode = 0;
3857 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3858 return -EIO;
3859 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3860 p = xdr_inline_decode(xdr, 4);
3861 if (unlikely(!p))
3862 return -EIO;
3863 tmp = be32_to_cpup(p);
3864 *mode = tmp & ~S_IFMT;
3865 bitmap[1] &= ~FATTR4_WORD1_MODE;
3866 ret = NFS_ATTR_FATTR_MODE;
3867 }
3868 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3869 return ret;
3870 }
3871
3872 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3873 {
3874 __be32 *p;
3875 int ret = 0;
3876
3877 *nlink = 1;
3878 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3879 return -EIO;
3880 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3881 p = xdr_inline_decode(xdr, 4);
3882 if (unlikely(!p))
3883 return -EIO;
3884 *nlink = be32_to_cpup(p);
3885 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3886 ret = NFS_ATTR_FATTR_NLINK;
3887 }
3888 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3889 return ret;
3890 }
3891
3892 static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3893 struct nfs4_string *name, gfp_t gfp_flags)
3894 {
3895 ssize_t ret;
3896
3897 ret = xdr_stream_decode_string_dup(xdr, &name->data,
3898 XDR_MAX_NETOBJ, gfp_flags);
3899 name->len = 0;
3900 if (ret > 0)
3901 name->len = ret;
3902 return ret;
3903 }
3904
3905 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3906 const struct nfs_server *server, kuid_t *uid,
3907 struct nfs4_string *owner_name)
3908 {
3909 ssize_t len;
3910 char *p;
3911
3912 *uid = make_kuid(&init_user_ns, -2);
3913 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3914 return -EIO;
3915 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
3916 return 0;
3917 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3918
3919 if (owner_name != NULL) {
3920 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO);
3921 if (len <= 0)
3922 goto out;
3923 dprintk("%s: name=%s\n", __func__, owner_name->data);
3924 return NFS_ATTR_FATTR_OWNER_NAME;
3925 } else {
3926 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3927 XDR_MAX_NETOBJ);
3928 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
3929 goto out;
3930 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3931 return NFS_ATTR_FATTR_OWNER;
3932 }
3933 out:
3934 if (len == -EBADMSG)
3935 return -EIO;
3936 return 0;
3937 }
3938
3939 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3940 const struct nfs_server *server, kgid_t *gid,
3941 struct nfs4_string *group_name)
3942 {
3943 ssize_t len;
3944 char *p;
3945
3946 *gid = make_kgid(&init_user_ns, -2);
3947 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3948 return -EIO;
3949 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
3950 return 0;
3951 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3952
3953 if (group_name != NULL) {
3954 len = decode_nfs4_string(xdr, group_name, GFP_NOIO);
3955 if (len <= 0)
3956 goto out;
3957 dprintk("%s: name=%s\n", __func__, group_name->data);
3958 return NFS_ATTR_FATTR_GROUP_NAME;
3959 } else {
3960 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3961 XDR_MAX_NETOBJ);
3962 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
3963 goto out;
3964 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3965 return NFS_ATTR_FATTR_GROUP;
3966 }
3967 out:
3968 if (len == -EBADMSG)
3969 return -EIO;
3970 return 0;
3971 }
3972
3973 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3974 {
3975 uint32_t major = 0, minor = 0;
3976 __be32 *p;
3977 int ret = 0;
3978
3979 *rdev = MKDEV(0,0);
3980 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3981 return -EIO;
3982 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3983 dev_t tmp;
3984
3985 p = xdr_inline_decode(xdr, 8);
3986 if (unlikely(!p))
3987 return -EIO;
3988 major = be32_to_cpup(p++);
3989 minor = be32_to_cpup(p);
3990 tmp = MKDEV(major, minor);
3991 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3992 *rdev = tmp;
3993 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3994 ret = NFS_ATTR_FATTR_RDEV;
3995 }
3996 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3997 return ret;
3998 }
3999
4000 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4001 {
4002 __be32 *p;
4003 int status = 0;
4004
4005 *res = 0;
4006 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4007 return -EIO;
4008 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4009 p = xdr_inline_decode(xdr, 8);
4010 if (unlikely(!p))
4011 return -EIO;
4012 xdr_decode_hyper(p, res);
4013 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4014 }
4015 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4016 return status;
4017 }
4018
4019 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4020 {
4021 __be32 *p;
4022 int status = 0;
4023
4024 *res = 0;
4025 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4026 return -EIO;
4027 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4028 p = xdr_inline_decode(xdr, 8);
4029 if (unlikely(!p))
4030 return -EIO;
4031 xdr_decode_hyper(p, res);
4032 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4033 }
4034 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4035 return status;
4036 }
4037
4038 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4039 {
4040 __be32 *p;
4041 int status = 0;
4042
4043 *res = 0;
4044 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4045 return -EIO;
4046 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4047 p = xdr_inline_decode(xdr, 8);
4048 if (unlikely(!p))
4049 return -EIO;
4050 xdr_decode_hyper(p, res);
4051 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4052 }
4053 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4054 return status;
4055 }
4056
4057 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4058 {
4059 __be32 *p;
4060 int ret = 0;
4061
4062 *used = 0;
4063 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4064 return -EIO;
4065 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4066 p = xdr_inline_decode(xdr, 8);
4067 if (unlikely(!p))
4068 return -EIO;
4069 xdr_decode_hyper(p, used);
4070 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4071 ret = NFS_ATTR_FATTR_SPACE_USED;
4072 }
4073 dprintk("%s: space used=%Lu\n", __func__,
4074 (unsigned long long)*used);
4075 return ret;
4076 }
4077
4078 static __be32 *
4079 xdr_decode_nfstime4(__be32 *p, struct timespec64 *t)
4080 {
4081 __u64 sec;
4082
4083 p = xdr_decode_hyper(p, &sec);
4084 t-> tv_sec = sec;
4085 t->tv_nsec = be32_to_cpup(p++);
4086 return p;
4087 }
4088
4089 static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time)
4090 {
4091 __be32 *p;
4092
4093 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2);
4094 if (unlikely(!p))
4095 return -EIO;
4096 xdr_decode_nfstime4(p, time);
4097 return 0;
4098 }
4099
4100 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4101 {
4102 int status = 0;
4103
4104 time->tv_sec = 0;
4105 time->tv_nsec = 0;
4106 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4107 return -EIO;
4108 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4109 status = decode_attr_time(xdr, time);
4110 if (status == 0)
4111 status = NFS_ATTR_FATTR_ATIME;
4112 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4113 }
4114 dprintk("%s: atime=%lld\n", __func__, time->tv_sec);
4115 return status;
4116 }
4117
4118 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4119 {
4120 int status = 0;
4121
4122 time->tv_sec = 0;
4123 time->tv_nsec = 0;
4124 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4125 return -EIO;
4126 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4127 status = decode_attr_time(xdr, time);
4128 if (status == 0)
4129 status = NFS_ATTR_FATTR_CTIME;
4130 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4131 }
4132 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec);
4133 return status;
4134 }
4135
4136 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4137 struct timespec64 *time)
4138 {
4139 int status = 0;
4140
4141 time->tv_sec = 0;
4142 time->tv_nsec = 0;
4143 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4144 return -EIO;
4145 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4146 status = decode_attr_time(xdr, time);
4147 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4148 }
4149 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec,
4150 time->tv_nsec);
4151 return status;
4152 }
4153
4154 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4155 struct nfs4_label *label)
4156 {
4157 uint32_t pi = 0;
4158 uint32_t lfs = 0;
4159 __u32 len;
4160 __be32 *p;
4161 int status = 0;
4162
4163 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4164 return -EIO;
4165 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4166 p = xdr_inline_decode(xdr, 4);
4167 if (unlikely(!p))
4168 return -EIO;
4169 lfs = be32_to_cpup(p++);
4170 p = xdr_inline_decode(xdr, 4);
4171 if (unlikely(!p))
4172 return -EIO;
4173 pi = be32_to_cpup(p++);
4174 p = xdr_inline_decode(xdr, 4);
4175 if (unlikely(!p))
4176 return -EIO;
4177 len = be32_to_cpup(p++);
4178 p = xdr_inline_decode(xdr, len);
4179 if (unlikely(!p))
4180 return -EIO;
4181 if (len < NFS4_MAXLABELLEN) {
4182 if (label) {
4183 if (label->len) {
4184 if (label->len < len)
4185 return -ERANGE;
4186 memcpy(label->label, p, len);
4187 }
4188 label->len = len;
4189 label->pi = pi;
4190 label->lfs = lfs;
4191 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4192 }
4193 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4194 } else
4195 printk(KERN_WARNING "%s: label too long (%u)!\n",
4196 __func__, len);
4197 }
4198 if (label && label->label)
4199 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4200 (char *)label->label, label->len, label->pi, label->lfs);
4201 return status;
4202 }
4203
4204 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4205 {
4206 int status = 0;
4207
4208 time->tv_sec = 0;
4209 time->tv_nsec = 0;
4210 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4211 return -EIO;
4212 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4213 status = decode_attr_time(xdr, time);
4214 if (status == 0)
4215 status = NFS_ATTR_FATTR_MTIME;
4216 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4217 }
4218 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec);
4219 return status;
4220 }
4221
4222 static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
4223 uint32_t *res)
4224 {
4225 __be32 *p;
4226
4227 *res = 0;
4228 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U)))
4229 return -EIO;
4230 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) {
4231 p = xdr_inline_decode(xdr, 4);
4232 if (unlikely(!p))
4233 return -EIO;
4234 *res = be32_to_cpup(p);
4235 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
4236 }
4237 dprintk("%s: XATTR support=%s\n", __func__,
4238 *res == 0 ? "false" : "true");
4239 return 0;
4240 }
4241
4242 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4243 {
4244 unsigned int attrwords = XDR_QUADLEN(attrlen);
4245 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4246
4247 if (unlikely(attrwords != nwords)) {
4248 dprintk("%s: server returned incorrect attribute length: "
4249 "%u %c %u\n",
4250 __func__,
4251 attrwords << 2,
4252 (attrwords < nwords) ? '<' : '>',
4253 nwords << 2);
4254 return -EIO;
4255 }
4256 return 0;
4257 }
4258
4259 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4260 {
4261 __be32 *p;
4262
4263 p = xdr_inline_decode(xdr, 20);
4264 if (unlikely(!p))
4265 return -EIO;
4266 cinfo->atomic = be32_to_cpup(p++);
4267 p = xdr_decode_hyper(p, &cinfo->before);
4268 xdr_decode_hyper(p, &cinfo->after);
4269 return 0;
4270 }
4271
4272 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4273 {
4274 __be32 *p;
4275 uint32_t supp, acc;
4276 int status;
4277
4278 status = decode_op_hdr(xdr, OP_ACCESS);
4279 if (status)
4280 return status;
4281 p = xdr_inline_decode(xdr, 8);
4282 if (unlikely(!p))
4283 return -EIO;
4284 supp = be32_to_cpup(p++);
4285 acc = be32_to_cpup(p);
4286 *supported = supp;
4287 *access = acc;
4288 return 0;
4289 }
4290
4291 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4292 {
4293 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
4294 if (unlikely(ret < 0))
4295 return -EIO;
4296 return 0;
4297 }
4298
4299 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4300 {
4301 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4302 }
4303
4304 static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4305 {
4306 stateid->type = NFS4_OPEN_STATEID_TYPE;
4307 return decode_stateid(xdr, stateid);
4308 }
4309
4310 static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4311 {
4312 stateid->type = NFS4_LOCK_STATEID_TYPE;
4313 return decode_stateid(xdr, stateid);
4314 }
4315
4316 static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4317 {
4318 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4319 return decode_stateid(xdr, stateid);
4320 }
4321
4322 static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4323 {
4324 nfs4_stateid dummy;
4325
4326 nfs4_stateid_copy(stateid, &invalid_stateid);
4327 return decode_stateid(xdr, &dummy);
4328 }
4329
4330 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4331 {
4332 int status;
4333
4334 status = decode_op_hdr(xdr, OP_CLOSE);
4335 if (status != -EIO)
4336 nfs_increment_open_seqid(status, res->seqid);
4337 if (!status)
4338 status = decode_invalid_stateid(xdr, &res->stateid);
4339 return status;
4340 }
4341
4342 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4343 {
4344 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4345 }
4346
4347 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4348 {
4349 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4350 }
4351
4352 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4353 {
4354 struct nfs_writeverf *verf = res->verf;
4355 int status;
4356
4357 status = decode_op_hdr(xdr, OP_COMMIT);
4358 if (!status)
4359 status = decode_write_verifier(xdr, &verf->verifier);
4360 if (!status)
4361 verf->committed = NFS_FILE_SYNC;
4362 return status;
4363 }
4364
4365 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4366 {
4367 __be32 *p;
4368 uint32_t bmlen;
4369 int status;
4370
4371 status = decode_op_hdr(xdr, OP_CREATE);
4372 if (status)
4373 return status;
4374 if ((status = decode_change_info(xdr, cinfo)))
4375 return status;
4376 p = xdr_inline_decode(xdr, 4);
4377 if (unlikely(!p))
4378 return -EIO;
4379 bmlen = be32_to_cpup(p);
4380 p = xdr_inline_decode(xdr, bmlen << 2);
4381 if (likely(p))
4382 return 0;
4383 return -EIO;
4384 }
4385
4386 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4387 {
4388 unsigned int savep;
4389 uint32_t attrlen, bitmap[3] = {0};
4390 int status;
4391
4392 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4393 goto xdr_error;
4394 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4395 goto xdr_error;
4396 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4397 goto xdr_error;
4398 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4399 goto xdr_error;
4400 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4401 &res->fh_expire_type)) != 0)
4402 goto xdr_error;
4403 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4404 goto xdr_error;
4405 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4406 goto xdr_error;
4407 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4408 goto xdr_error;
4409 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4410 res->exclcreat_bitmask)) != 0)
4411 goto xdr_error;
4412 status = verify_attr_len(xdr, savep, attrlen);
4413 xdr_error:
4414 dprintk("%s: xdr returned %d!\n", __func__, -status);
4415 return status;
4416 }
4417
4418 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4419 {
4420 unsigned int savep;
4421 uint32_t attrlen, bitmap[3] = {0};
4422 int status;
4423
4424 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4425 goto xdr_error;
4426 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4427 goto xdr_error;
4428 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4429 goto xdr_error;
4430
4431 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4432 goto xdr_error;
4433 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4434 goto xdr_error;
4435 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4436 goto xdr_error;
4437
4438 status = -EIO;
4439 if (unlikely(bitmap[0]))
4440 goto xdr_error;
4441
4442 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4443 goto xdr_error;
4444 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4445 goto xdr_error;
4446 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4447 goto xdr_error;
4448
4449 status = verify_attr_len(xdr, savep, attrlen);
4450 xdr_error:
4451 dprintk("%s: xdr returned %d!\n", __func__, -status);
4452 return status;
4453 }
4454
4455 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4456 {
4457 unsigned int savep;
4458 uint32_t attrlen, bitmap[3] = {0};
4459 int status;
4460
4461 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4462 goto xdr_error;
4463 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4464 goto xdr_error;
4465 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4466 goto xdr_error;
4467
4468 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4469 goto xdr_error;
4470 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4471 goto xdr_error;
4472
4473 status = verify_attr_len(xdr, savep, attrlen);
4474 xdr_error:
4475 dprintk("%s: xdr returned %d!\n", __func__, -status);
4476 return status;
4477 }
4478
4479 static int decode_threshold_hint(struct xdr_stream *xdr,
4480 uint32_t *bitmap,
4481 uint64_t *res,
4482 uint32_t hint_bit)
4483 {
4484 __be32 *p;
4485
4486 *res = 0;
4487 if (likely(bitmap[0] & hint_bit)) {
4488 p = xdr_inline_decode(xdr, 8);
4489 if (unlikely(!p))
4490 return -EIO;
4491 xdr_decode_hyper(p, res);
4492 }
4493 return 0;
4494 }
4495
4496 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4497 struct nfs4_threshold *res)
4498 {
4499 __be32 *p;
4500 unsigned int savep;
4501 uint32_t bitmap[3] = {0,}, attrlen;
4502 int status;
4503
4504 /* layout type */
4505 p = xdr_inline_decode(xdr, 4);
4506 if (unlikely(!p))
4507 return -EIO;
4508 res->l_type = be32_to_cpup(p);
4509
4510 /* thi_hintset bitmap */
4511 status = decode_attr_bitmap(xdr, bitmap);
4512 if (status < 0)
4513 goto xdr_error;
4514
4515 /* thi_hintlist length */
4516 status = decode_attr_length(xdr, &attrlen, &savep);
4517 if (status < 0)
4518 goto xdr_error;
4519 /* thi_hintlist */
4520 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4521 if (status < 0)
4522 goto xdr_error;
4523 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4524 if (status < 0)
4525 goto xdr_error;
4526 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4527 THRESHOLD_RD_IO);
4528 if (status < 0)
4529 goto xdr_error;
4530 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4531 THRESHOLD_WR_IO);
4532 if (status < 0)
4533 goto xdr_error;
4534
4535 status = verify_attr_len(xdr, savep, attrlen);
4536 res->bm = bitmap[0];
4537
4538 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4539 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4540 res->wr_io_sz);
4541 xdr_error:
4542 dprintk("%s ret=%d!\n", __func__, status);
4543 return status;
4544 }
4545
4546 /*
4547 * Thresholds on pNFS direct I/O vrs MDS I/O
4548 */
4549 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4550 uint32_t *bitmap,
4551 struct nfs4_threshold *res)
4552 {
4553 __be32 *p;
4554 int status = 0;
4555 uint32_t num;
4556
4557 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4558 return -EIO;
4559 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4560 /* Did the server return an unrequested attribute? */
4561 if (unlikely(res == NULL))
4562 return -EREMOTEIO;
4563 p = xdr_inline_decode(xdr, 4);
4564 if (unlikely(!p))
4565 return -EIO;
4566 num = be32_to_cpup(p);
4567 if (num == 0)
4568 return 0;
4569 if (num > 1)
4570 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4571 "drivers per filesystem not supported\n",
4572 __func__);
4573
4574 status = decode_first_threshold_item4(xdr, res);
4575 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4576 }
4577 return status;
4578 }
4579
4580 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4581 struct nfs_fattr *fattr, struct nfs_fh *fh,
4582 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4583 const struct nfs_server *server)
4584 {
4585 int status;
4586 umode_t fmode = 0;
4587 uint32_t type;
4588 int32_t err;
4589
4590 status = decode_attr_type(xdr, bitmap, &type);
4591 if (status < 0)
4592 goto xdr_error;
4593 fattr->mode = 0;
4594 if (status != 0) {
4595 fattr->mode |= nfs_type2fmt[type];
4596 fattr->valid |= status;
4597 }
4598
4599 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4600 if (status < 0)
4601 goto xdr_error;
4602 fattr->valid |= status;
4603
4604 status = decode_attr_size(xdr, bitmap, &fattr->size);
4605 if (status < 0)
4606 goto xdr_error;
4607 fattr->valid |= status;
4608
4609 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4610 if (status < 0)
4611 goto xdr_error;
4612 fattr->valid |= status;
4613
4614 err = 0;
4615 status = decode_attr_error(xdr, bitmap, &err);
4616 if (status < 0)
4617 goto xdr_error;
4618
4619 status = decode_attr_filehandle(xdr, bitmap, fh);
4620 if (status < 0)
4621 goto xdr_error;
4622
4623 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4624 if (status < 0)
4625 goto xdr_error;
4626 fattr->valid |= status;
4627
4628 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4629 if (status < 0)
4630 goto xdr_error;
4631 fattr->valid |= status;
4632
4633 status = -EIO;
4634 if (unlikely(bitmap[0]))
4635 goto xdr_error;
4636
4637 status = decode_attr_mode(xdr, bitmap, &fmode);
4638 if (status < 0)
4639 goto xdr_error;
4640 if (status != 0) {
4641 fattr->mode |= fmode;
4642 fattr->valid |= status;
4643 }
4644
4645 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4646 if (status < 0)
4647 goto xdr_error;
4648 fattr->valid |= status;
4649
4650 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4651 if (status < 0)
4652 goto xdr_error;
4653 fattr->valid |= status;
4654
4655 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4656 if (status < 0)
4657 goto xdr_error;
4658 fattr->valid |= status;
4659
4660 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4661 if (status < 0)
4662 goto xdr_error;
4663 fattr->valid |= status;
4664
4665 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4666 if (status < 0)
4667 goto xdr_error;
4668 fattr->valid |= status;
4669
4670 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4671 if (status < 0)
4672 goto xdr_error;
4673 fattr->valid |= status;
4674
4675 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4676 if (status < 0)
4677 goto xdr_error;
4678 fattr->valid |= status;
4679
4680 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4681 if (status < 0)
4682 goto xdr_error;
4683 fattr->valid |= status;
4684
4685 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4686 if (status < 0)
4687 goto xdr_error;
4688 fattr->valid |= status;
4689
4690 status = -EIO;
4691 if (unlikely(bitmap[1]))
4692 goto xdr_error;
4693
4694 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4695 if (status < 0)
4696 goto xdr_error;
4697
4698 if (label) {
4699 status = decode_attr_security_label(xdr, bitmap, label);
4700 if (status < 0)
4701 goto xdr_error;
4702 fattr->valid |= status;
4703 }
4704
4705 xdr_error:
4706 dprintk("%s: xdr returned %d\n", __func__, -status);
4707 return status;
4708 }
4709
4710 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4711 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4712 struct nfs4_label *label, const struct nfs_server *server)
4713 {
4714 unsigned int savep;
4715 uint32_t attrlen,
4716 bitmap[3] = {0};
4717 int status;
4718
4719 status = decode_op_hdr(xdr, OP_GETATTR);
4720 if (status < 0)
4721 goto xdr_error;
4722
4723 status = decode_attr_bitmap(xdr, bitmap);
4724 if (status < 0)
4725 goto xdr_error;
4726
4727 status = decode_attr_length(xdr, &attrlen, &savep);
4728 if (status < 0)
4729 goto xdr_error;
4730
4731 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4732 label, server);
4733 if (status < 0)
4734 goto xdr_error;
4735
4736 status = verify_attr_len(xdr, savep, attrlen);
4737 xdr_error:
4738 dprintk("%s: xdr returned %d\n", __func__, -status);
4739 return status;
4740 }
4741
4742 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4743 struct nfs4_label *label, const struct nfs_server *server)
4744 {
4745 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4746 }
4747
4748 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4749 const struct nfs_server *server)
4750 {
4751 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4752 }
4753
4754 /*
4755 * Decode potentially multiple layout types.
4756 */
4757 static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4758 struct nfs_fsinfo *fsinfo)
4759 {
4760 __be32 *p;
4761 uint32_t i;
4762
4763 p = xdr_inline_decode(xdr, 4);
4764 if (unlikely(!p))
4765 return -EIO;
4766 fsinfo->nlayouttypes = be32_to_cpup(p);
4767
4768 /* pNFS is not supported by the underlying file system */
4769 if (fsinfo->nlayouttypes == 0)
4770 return 0;
4771
4772 /* Decode and set first layout type, move xdr->p past unused types */
4773 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4774 if (unlikely(!p))
4775 return -EIO;
4776
4777 /* If we get too many, then just cap it at the max */
4778 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4779 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4780 __func__, fsinfo->nlayouttypes);
4781 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4782 }
4783
4784 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4785 fsinfo->layouttype[i] = be32_to_cpup(p++);
4786 return 0;
4787 }
4788
4789 /*
4790 * The type of file system exported.
4791 * Note we must ensure that layouttype is set in any non-error case.
4792 */
4793 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4794 struct nfs_fsinfo *fsinfo)
4795 {
4796 int status = 0;
4797
4798 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4799 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4800 return -EIO;
4801 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4802 status = decode_pnfs_layout_types(xdr, fsinfo);
4803 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4804 }
4805 return status;
4806 }
4807
4808 /*
4809 * The prefered block size for layout directed io
4810 */
4811 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4812 uint32_t *res)
4813 {
4814 __be32 *p;
4815
4816 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4817 *res = 0;
4818 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4819 p = xdr_inline_decode(xdr, 4);
4820 if (unlikely(!p))
4821 return -EIO;
4822 *res = be32_to_cpup(p);
4823 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4824 }
4825 return 0;
4826 }
4827
4828 /*
4829 * The granularity of a CLONE operation.
4830 */
4831 static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4832 uint32_t *res)
4833 {
4834 __be32 *p;
4835
4836 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4837 *res = 0;
4838 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4839 p = xdr_inline_decode(xdr, 4);
4840 if (unlikely(!p))
4841 return -EIO;
4842 *res = be32_to_cpup(p);
4843 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4844 }
4845 return 0;
4846 }
4847
4848 static int decode_attr_change_attr_type(struct xdr_stream *xdr,
4849 uint32_t *bitmap,
4850 enum nfs4_change_attr_type *res)
4851 {
4852 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4853
4854 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4855 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) {
4856 if (xdr_stream_decode_u32(xdr, &tmp))
4857 return -EIO;
4858 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE;
4859 }
4860
4861 switch(tmp) {
4862 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR:
4863 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER:
4864 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS:
4865 case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
4866 *res = tmp;
4867 break;
4868 default:
4869 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4870 }
4871 return 0;
4872 }
4873
4874 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4875 {
4876 unsigned int savep;
4877 uint32_t attrlen, bitmap[3];
4878 int status;
4879
4880 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4881 goto xdr_error;
4882 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4883 goto xdr_error;
4884 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4885 goto xdr_error;
4886
4887 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4888
4889 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4890 goto xdr_error;
4891 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4892 goto xdr_error;
4893 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4894 goto xdr_error;
4895 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4896 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4897 goto xdr_error;
4898 fsinfo->wtpref = fsinfo->wtmax;
4899
4900 status = -EIO;
4901 if (unlikely(bitmap[0]))
4902 goto xdr_error;
4903
4904 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4905 if (status != 0)
4906 goto xdr_error;
4907 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4908 if (status != 0)
4909 goto xdr_error;
4910
4911 status = -EIO;
4912 if (unlikely(bitmap[1]))
4913 goto xdr_error;
4914
4915 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4916 if (status)
4917 goto xdr_error;
4918 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4919 if (status)
4920 goto xdr_error;
4921
4922 status = decode_attr_change_attr_type(xdr, bitmap,
4923 &fsinfo->change_attr_type);
4924 if (status)
4925 goto xdr_error;
4926
4927 status = decode_attr_xattrsupport(xdr, bitmap,
4928 &fsinfo->xattr_support);
4929 if (status)
4930 goto xdr_error;
4931
4932 status = verify_attr_len(xdr, savep, attrlen);
4933 xdr_error:
4934 dprintk("%s: xdr returned %d!\n", __func__, -status);
4935 return status;
4936 }
4937
4938 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4939 {
4940 __be32 *p;
4941 uint32_t len;
4942 int status;
4943
4944 /* Zero handle first to allow comparisons */
4945 memset(fh, 0, sizeof(*fh));
4946
4947 status = decode_op_hdr(xdr, OP_GETFH);
4948 if (status)
4949 return status;
4950
4951 p = xdr_inline_decode(xdr, 4);
4952 if (unlikely(!p))
4953 return -EIO;
4954 len = be32_to_cpup(p);
4955 if (len > NFS4_FHSIZE)
4956 return -EIO;
4957 fh->size = len;
4958 p = xdr_inline_decode(xdr, len);
4959 if (unlikely(!p))
4960 return -EIO;
4961 memcpy(fh->data, p, len);
4962 return 0;
4963 }
4964
4965 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4966 {
4967 int status;
4968
4969 status = decode_op_hdr(xdr, OP_LINK);
4970 if (status)
4971 return status;
4972 return decode_change_info(xdr, cinfo);
4973 }
4974
4975 /*
4976 * We create the owner, so we know a proper owner.id length is 4.
4977 */
4978 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4979 {
4980 uint64_t offset, length, clientid;
4981 __be32 *p;
4982 uint32_t namelen, type;
4983
4984 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4985 if (unlikely(!p))
4986 return -EIO;
4987 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4988 p = xdr_decode_hyper(p, &length);
4989 type = be32_to_cpup(p++); /* 4 byte read */
4990 if (fl != NULL) { /* manipulate file lock */
4991 fl->fl_start = (loff_t)offset;
4992 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4993 if (length == ~(uint64_t)0)
4994 fl->fl_end = OFFSET_MAX;
4995 fl->fl_type = F_WRLCK;
4996 if (type & 1)
4997 fl->fl_type = F_RDLCK;
4998 fl->fl_pid = 0;
4999 }
5000 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
5001 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5002 p = xdr_inline_decode(xdr, namelen); /* variable size field */
5003 if (likely(!p))
5004 return -EIO;
5005 return -NFS4ERR_DENIED;
5006 }
5007
5008 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5009 {
5010 int status;
5011
5012 status = decode_op_hdr(xdr, OP_LOCK);
5013 if (status == -EIO)
5014 goto out;
5015 if (status == 0) {
5016 status = decode_lock_stateid(xdr, &res->stateid);
5017 if (unlikely(status))
5018 goto out;
5019 } else if (status == -NFS4ERR_DENIED)
5020 status = decode_lock_denied(xdr, NULL);
5021 if (res->open_seqid != NULL)
5022 nfs_increment_open_seqid(status, res->open_seqid);
5023 nfs_increment_lock_seqid(status, res->lock_seqid);
5024 out:
5025 return status;
5026 }
5027
5028 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5029 {
5030 int status;
5031 status = decode_op_hdr(xdr, OP_LOCKT);
5032 if (status == -NFS4ERR_DENIED)
5033 return decode_lock_denied(xdr, res->denied);
5034 return status;
5035 }
5036
5037 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5038 {
5039 int status;
5040
5041 status = decode_op_hdr(xdr, OP_LOCKU);
5042 if (status != -EIO)
5043 nfs_increment_lock_seqid(status, res->seqid);
5044 if (status == 0)
5045 status = decode_lock_stateid(xdr, &res->stateid);
5046 return status;
5047 }
5048
5049 static int decode_release_lockowner(struct xdr_stream *xdr)
5050 {
5051 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5052 }
5053
5054 static int decode_lookup(struct xdr_stream *xdr)
5055 {
5056 return decode_op_hdr(xdr, OP_LOOKUP);
5057 }
5058
5059 static int decode_lookupp(struct xdr_stream *xdr)
5060 {
5061 return decode_op_hdr(xdr, OP_LOOKUPP);
5062 }
5063
5064 /* This is too sick! */
5065 static int decode_space_limit(struct xdr_stream *xdr,
5066 unsigned long *pagemod_limit)
5067 {
5068 __be32 *p;
5069 uint32_t limit_type, nblocks, blocksize;
5070 u64 maxsize = 0;
5071
5072 p = xdr_inline_decode(xdr, 12);
5073 if (unlikely(!p))
5074 return -EIO;
5075 limit_type = be32_to_cpup(p++);
5076 switch (limit_type) {
5077 case NFS4_LIMIT_SIZE:
5078 xdr_decode_hyper(p, &maxsize);
5079 break;
5080 case NFS4_LIMIT_BLOCKS:
5081 nblocks = be32_to_cpup(p++);
5082 blocksize = be32_to_cpup(p);
5083 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5084 }
5085 maxsize >>= PAGE_SHIFT;
5086 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5087 return 0;
5088 }
5089
5090 static int decode_rw_delegation(struct xdr_stream *xdr,
5091 uint32_t delegation_type,
5092 struct nfs_openres *res)
5093 {
5094 __be32 *p;
5095 int status;
5096
5097 status = decode_delegation_stateid(xdr, &res->delegation);
5098 if (unlikely(status))
5099 return status;
5100 p = xdr_inline_decode(xdr, 4);
5101 if (unlikely(!p))
5102 return -EIO;
5103 res->do_recall = be32_to_cpup(p);
5104
5105 switch (delegation_type) {
5106 case NFS4_OPEN_DELEGATE_READ:
5107 res->delegation_type = FMODE_READ;
5108 break;
5109 case NFS4_OPEN_DELEGATE_WRITE:
5110 res->delegation_type = FMODE_WRITE|FMODE_READ;
5111 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5112 return -EIO;
5113 }
5114 return decode_ace(xdr, NULL);
5115 }
5116
5117 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5118 {
5119 __be32 *p;
5120 uint32_t why_no_delegation;
5121
5122 p = xdr_inline_decode(xdr, 4);
5123 if (unlikely(!p))
5124 return -EIO;
5125 why_no_delegation = be32_to_cpup(p);
5126 switch (why_no_delegation) {
5127 case WND4_CONTENTION:
5128 case WND4_RESOURCE:
5129 xdr_inline_decode(xdr, 4);
5130 /* Ignore for now */
5131 }
5132 return 0;
5133 }
5134
5135 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5136 {
5137 __be32 *p;
5138 uint32_t delegation_type;
5139
5140 p = xdr_inline_decode(xdr, 4);
5141 if (unlikely(!p))
5142 return -EIO;
5143 delegation_type = be32_to_cpup(p);
5144 res->delegation_type = 0;
5145 switch (delegation_type) {
5146 case NFS4_OPEN_DELEGATE_NONE:
5147 return 0;
5148 case NFS4_OPEN_DELEGATE_READ:
5149 case NFS4_OPEN_DELEGATE_WRITE:
5150 return decode_rw_delegation(xdr, delegation_type, res);
5151 case NFS4_OPEN_DELEGATE_NONE_EXT:
5152 return decode_no_delegation(xdr, res);
5153 }
5154 return -EIO;
5155 }
5156
5157 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5158 {
5159 __be32 *p;
5160 uint32_t savewords, bmlen, i;
5161 int status;
5162
5163 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5164 return status;
5165 nfs_increment_open_seqid(status, res->seqid);
5166 if (status)
5167 return status;
5168 status = decode_open_stateid(xdr, &res->stateid);
5169 if (unlikely(status))
5170 return status;
5171
5172 decode_change_info(xdr, &res->cinfo);
5173
5174 p = xdr_inline_decode(xdr, 8);
5175 if (unlikely(!p))
5176 return -EIO;
5177 res->rflags = be32_to_cpup(p++);
5178 bmlen = be32_to_cpup(p);
5179 if (bmlen > 10)
5180 goto xdr_error;
5181
5182 p = xdr_inline_decode(xdr, bmlen << 2);
5183 if (unlikely(!p))
5184 return -EIO;
5185 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5186 for (i = 0; i < savewords; ++i)
5187 res->attrset[i] = be32_to_cpup(p++);
5188 for (; i < NFS4_BITMAP_SIZE; i++)
5189 res->attrset[i] = 0;
5190
5191 return decode_delegation(xdr, res);
5192 xdr_error:
5193 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5194 return -EIO;
5195 }
5196
5197 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5198 {
5199 int status;
5200
5201 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5202 if (status != -EIO)
5203 nfs_increment_open_seqid(status, res->seqid);
5204 if (!status)
5205 status = decode_open_stateid(xdr, &res->stateid);
5206 return status;
5207 }
5208
5209 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5210 {
5211 int status;
5212
5213 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5214 if (status != -EIO)
5215 nfs_increment_open_seqid(status, res->seqid);
5216 if (!status)
5217 status = decode_open_stateid(xdr, &res->stateid);
5218 return status;
5219 }
5220
5221 static int decode_putfh(struct xdr_stream *xdr)
5222 {
5223 return decode_op_hdr(xdr, OP_PUTFH);
5224 }
5225
5226 static int decode_putrootfh(struct xdr_stream *xdr)
5227 {
5228 return decode_op_hdr(xdr, OP_PUTROOTFH);
5229 }
5230
5231 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5232 struct nfs_pgio_res *res)
5233 {
5234 __be32 *p;
5235 uint32_t count, eof, recvd;
5236 int status;
5237
5238 status = decode_op_hdr(xdr, OP_READ);
5239 if (status)
5240 return status;
5241 p = xdr_inline_decode(xdr, 8);
5242 if (unlikely(!p))
5243 return -EIO;
5244 eof = be32_to_cpup(p++);
5245 count = be32_to_cpup(p);
5246 recvd = xdr_read_pages(xdr, count);
5247 if (count > recvd) {
5248 dprintk("NFS: server cheating in read reply: "
5249 "count %u > recvd %u\n", count, recvd);
5250 count = recvd;
5251 eof = 0;
5252 }
5253 res->eof = eof;
5254 res->count = count;
5255 return 0;
5256 }
5257
5258 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5259 {
5260 int status;
5261 __be32 verf[2];
5262
5263 status = decode_op_hdr(xdr, OP_READDIR);
5264 if (!status)
5265 status = decode_verifier(xdr, readdir->verifier.data);
5266 if (unlikely(status))
5267 return status;
5268 memcpy(verf, readdir->verifier.data, sizeof(verf));
5269 dprintk("%s: verifier = %08x:%08x\n",
5270 __func__, verf[0], verf[1]);
5271 return xdr_read_pages(xdr, xdr->buf->page_len);
5272 }
5273
5274 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5275 {
5276 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5277 u32 len, recvd;
5278 __be32 *p;
5279 int status;
5280
5281 status = decode_op_hdr(xdr, OP_READLINK);
5282 if (status)
5283 return status;
5284
5285 /* Convert length of symlink */
5286 p = xdr_inline_decode(xdr, 4);
5287 if (unlikely(!p))
5288 return -EIO;
5289 len = be32_to_cpup(p);
5290 if (len >= rcvbuf->page_len || len <= 0) {
5291 dprintk("nfs: server returned giant symlink!\n");
5292 return -ENAMETOOLONG;
5293 }
5294 recvd = xdr_read_pages(xdr, len);
5295 if (recvd < len) {
5296 dprintk("NFS: server cheating in readlink reply: "
5297 "count %u > recvd %u\n", len, recvd);
5298 return -EIO;
5299 }
5300 /*
5301 * The XDR encode routine has set things up so that
5302 * the link text will be copied directly into the
5303 * buffer. We just have to do overflow-checking,
5304 * and null-terminate the text (the VFS expects
5305 * null-termination).
5306 */
5307 xdr_terminate_string(rcvbuf, len);
5308 return 0;
5309 }
5310
5311 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5312 {
5313 int status;
5314
5315 status = decode_op_hdr(xdr, OP_REMOVE);
5316 if (status)
5317 goto out;
5318 status = decode_change_info(xdr, cinfo);
5319 out:
5320 return status;
5321 }
5322
5323 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5324 struct nfs4_change_info *new_cinfo)
5325 {
5326 int status;
5327
5328 status = decode_op_hdr(xdr, OP_RENAME);
5329 if (status)
5330 goto out;
5331 if ((status = decode_change_info(xdr, old_cinfo)))
5332 goto out;
5333 status = decode_change_info(xdr, new_cinfo);
5334 out:
5335 return status;
5336 }
5337
5338 static int decode_renew(struct xdr_stream *xdr)
5339 {
5340 return decode_op_hdr(xdr, OP_RENEW);
5341 }
5342
5343 static int
5344 decode_restorefh(struct xdr_stream *xdr)
5345 {
5346 return decode_op_hdr(xdr, OP_RESTOREFH);
5347 }
5348
5349 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5350 struct nfs_getaclres *res)
5351 {
5352 unsigned int savep;
5353 uint32_t attrlen,
5354 bitmap[3] = {0};
5355 int status;
5356
5357 res->acl_len = 0;
5358 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5359 goto out;
5360
5361 xdr_enter_page(xdr, xdr->buf->page_len);
5362
5363 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5364 goto out;
5365 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5366 goto out;
5367
5368 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5369 return -EIO;
5370 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5371
5372 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5373 * are stored with the acl data to handle the problem of
5374 * variable length bitmaps.*/
5375 res->acl_data_offset = xdr_page_pos(xdr);
5376 res->acl_len = attrlen;
5377
5378 /* Check for receive buffer overflow */
5379 if (res->acl_len > xdr_stream_remaining(xdr) ||
5380 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5381 res->acl_flags |= NFS4_ACL_TRUNC;
5382 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5383 attrlen, xdr_stream_remaining(xdr));
5384 }
5385 } else
5386 status = -EOPNOTSUPP;
5387
5388 out:
5389 return status;
5390 }
5391
5392 static int
5393 decode_savefh(struct xdr_stream *xdr)
5394 {
5395 return decode_op_hdr(xdr, OP_SAVEFH);
5396 }
5397
5398 static int decode_setattr(struct xdr_stream *xdr)
5399 {
5400 int status;
5401
5402 status = decode_op_hdr(xdr, OP_SETATTR);
5403 if (status)
5404 return status;
5405 if (decode_bitmap4(xdr, NULL, 0) >= 0)
5406 return 0;
5407 return -EIO;
5408 }
5409
5410 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5411 {
5412 __be32 *p;
5413 uint32_t opnum;
5414 int32_t nfserr;
5415
5416 p = xdr_inline_decode(xdr, 8);
5417 if (unlikely(!p))
5418 return -EIO;
5419 opnum = be32_to_cpup(p++);
5420 if (opnum != OP_SETCLIENTID) {
5421 dprintk("nfs: decode_setclientid: Server returned operation"
5422 " %d\n", opnum);
5423 return -EIO;
5424 }
5425 nfserr = be32_to_cpup(p);
5426 if (nfserr == NFS_OK) {
5427 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5428 if (unlikely(!p))
5429 return -EIO;
5430 p = xdr_decode_hyper(p, &res->clientid);
5431 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5432 } else if (nfserr == NFSERR_CLID_INUSE) {
5433 uint32_t len;
5434
5435 /* skip netid string */
5436 p = xdr_inline_decode(xdr, 4);
5437 if (unlikely(!p))
5438 return -EIO;
5439 len = be32_to_cpup(p);
5440 p = xdr_inline_decode(xdr, len);
5441 if (unlikely(!p))
5442 return -EIO;
5443
5444 /* skip uaddr string */
5445 p = xdr_inline_decode(xdr, 4);
5446 if (unlikely(!p))
5447 return -EIO;
5448 len = be32_to_cpup(p);
5449 p = xdr_inline_decode(xdr, len);
5450 if (unlikely(!p))
5451 return -EIO;
5452 return -NFSERR_CLID_INUSE;
5453 } else
5454 return nfs4_stat_to_errno(nfserr);
5455
5456 return 0;
5457 }
5458
5459 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5460 {
5461 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5462 }
5463
5464 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5465 {
5466 __be32 *p;
5467 int status;
5468
5469 status = decode_op_hdr(xdr, OP_WRITE);
5470 if (status)
5471 return status;
5472
5473 p = xdr_inline_decode(xdr, 8);
5474 if (unlikely(!p))
5475 return -EIO;
5476 res->count = be32_to_cpup(p++);
5477 res->verf->committed = be32_to_cpup(p++);
5478 return decode_write_verifier(xdr, &res->verf->verifier);
5479 }
5480
5481 static int decode_delegreturn(struct xdr_stream *xdr)
5482 {
5483 return decode_op_hdr(xdr, OP_DELEGRETURN);
5484 }
5485
5486 static int decode_secinfo_gss(struct xdr_stream *xdr,
5487 struct nfs4_secinfo4 *flavor)
5488 {
5489 u32 oid_len;
5490 __be32 *p;
5491
5492 p = xdr_inline_decode(xdr, 4);
5493 if (unlikely(!p))
5494 return -EIO;
5495 oid_len = be32_to_cpup(p);
5496 if (oid_len > GSS_OID_MAX_LEN)
5497 return -EINVAL;
5498
5499 p = xdr_inline_decode(xdr, oid_len);
5500 if (unlikely(!p))
5501 return -EIO;
5502 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5503 flavor->flavor_info.oid.len = oid_len;
5504
5505 p = xdr_inline_decode(xdr, 8);
5506 if (unlikely(!p))
5507 return -EIO;
5508 flavor->flavor_info.qop = be32_to_cpup(p++);
5509 flavor->flavor_info.service = be32_to_cpup(p);
5510
5511 return 0;
5512 }
5513
5514 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5515 {
5516 struct nfs4_secinfo4 *sec_flavor;
5517 unsigned int i, num_flavors;
5518 int status;
5519 __be32 *p;
5520
5521 p = xdr_inline_decode(xdr, 4);
5522 if (unlikely(!p))
5523 return -EIO;
5524
5525 res->flavors->num_flavors = 0;
5526 num_flavors = be32_to_cpup(p);
5527
5528 for (i = 0; i < num_flavors; i++) {
5529 sec_flavor = &res->flavors->flavors[i];
5530 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5531 break;
5532
5533 p = xdr_inline_decode(xdr, 4);
5534 if (unlikely(!p))
5535 return -EIO;
5536 sec_flavor->flavor = be32_to_cpup(p);
5537
5538 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5539 status = decode_secinfo_gss(xdr, sec_flavor);
5540 if (status)
5541 goto out;
5542 }
5543 res->flavors->num_flavors++;
5544 }
5545
5546 status = 0;
5547 out:
5548 return status;
5549 }
5550
5551 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5552 {
5553 int status = decode_op_hdr(xdr, OP_SECINFO);
5554 if (status)
5555 return status;
5556 return decode_secinfo_common(xdr, res);
5557 }
5558
5559 #if defined(CONFIG_NFS_V4_1)
5560 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5561 {
5562 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5563 if (status)
5564 return status;
5565 return decode_secinfo_common(xdr, res);
5566 }
5567
5568 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5569 {
5570 __be32 *p;
5571 uint32_t bitmap_words;
5572 unsigned int i;
5573
5574 p = xdr_inline_decode(xdr, 4);
5575 if (!p)
5576 return -EIO;
5577 bitmap_words = be32_to_cpup(p++);
5578 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5579 return -EIO;
5580 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5581 for (i = 0; i < bitmap_words; i++)
5582 op_map->u.words[i] = be32_to_cpup(p++);
5583
5584 return 0;
5585 }
5586
5587 static int decode_exchange_id(struct xdr_stream *xdr,
5588 struct nfs41_exchange_id_res *res)
5589 {
5590 __be32 *p;
5591 uint32_t dummy;
5592 char *dummy_str;
5593 int status;
5594 uint32_t impl_id_count;
5595
5596 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5597 if (status)
5598 return status;
5599
5600 p = xdr_inline_decode(xdr, 8);
5601 if (unlikely(!p))
5602 return -EIO;
5603 xdr_decode_hyper(p, &res->clientid);
5604 p = xdr_inline_decode(xdr, 12);
5605 if (unlikely(!p))
5606 return -EIO;
5607 res->seqid = be32_to_cpup(p++);
5608 res->flags = be32_to_cpup(p++);
5609
5610 res->state_protect.how = be32_to_cpup(p);
5611 switch (res->state_protect.how) {
5612 case SP4_NONE:
5613 break;
5614 case SP4_MACH_CRED:
5615 status = decode_op_map(xdr, &res->state_protect.enforce);
5616 if (status)
5617 return status;
5618 status = decode_op_map(xdr, &res->state_protect.allow);
5619 if (status)
5620 return status;
5621 break;
5622 default:
5623 WARN_ON_ONCE(1);
5624 return -EIO;
5625 }
5626
5627 /* server_owner4.so_minor_id */
5628 p = xdr_inline_decode(xdr, 8);
5629 if (unlikely(!p))
5630 return -EIO;
5631 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5632
5633 /* server_owner4.so_major_id */
5634 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5635 if (unlikely(status))
5636 return status;
5637 memcpy(res->server_owner->major_id, dummy_str, dummy);
5638 res->server_owner->major_id_sz = dummy;
5639
5640 /* server_scope4 */
5641 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5642 if (unlikely(status))
5643 return status;
5644 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5645 res->server_scope->server_scope_sz = dummy;
5646
5647 /* Implementation Id */
5648 p = xdr_inline_decode(xdr, 4);
5649 if (unlikely(!p))
5650 return -EIO;
5651 impl_id_count = be32_to_cpup(p++);
5652
5653 if (impl_id_count) {
5654 /* nii_domain */
5655 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5656 if (unlikely(status))
5657 return status;
5658 memcpy(res->impl_id->domain, dummy_str, dummy);
5659
5660 /* nii_name */
5661 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5662 if (unlikely(status))
5663 return status;
5664 memcpy(res->impl_id->name, dummy_str, dummy);
5665
5666 /* nii_date */
5667 p = xdr_inline_decode(xdr, 12);
5668 if (unlikely(!p))
5669 return -EIO;
5670 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5671 res->impl_id->date.nseconds = be32_to_cpup(p);
5672
5673 /* if there's more than one entry, ignore the rest */
5674 }
5675 return 0;
5676 }
5677
5678 static int decode_chan_attrs(struct xdr_stream *xdr,
5679 struct nfs4_channel_attrs *attrs)
5680 {
5681 __be32 *p;
5682 u32 nr_attrs, val;
5683
5684 p = xdr_inline_decode(xdr, 28);
5685 if (unlikely(!p))
5686 return -EIO;
5687 val = be32_to_cpup(p++); /* headerpadsz */
5688 if (val)
5689 return -EINVAL; /* no support for header padding yet */
5690 attrs->max_rqst_sz = be32_to_cpup(p++);
5691 attrs->max_resp_sz = be32_to_cpup(p++);
5692 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5693 attrs->max_ops = be32_to_cpup(p++);
5694 attrs->max_reqs = be32_to_cpup(p++);
5695 nr_attrs = be32_to_cpup(p);
5696 if (unlikely(nr_attrs > 1)) {
5697 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5698 "count %u\n", __func__, nr_attrs);
5699 return -EINVAL;
5700 }
5701 if (nr_attrs == 1) {
5702 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5703 if (unlikely(!p))
5704 return -EIO;
5705 }
5706 return 0;
5707 }
5708
5709 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5710 {
5711 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5712 }
5713
5714 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5715 struct nfs41_bind_conn_to_session_res *res)
5716 {
5717 __be32 *p;
5718 int status;
5719
5720 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5721 if (!status)
5722 status = decode_sessionid(xdr, &res->sessionid);
5723 if (unlikely(status))
5724 return status;
5725
5726 /* dir flags, rdma mode bool */
5727 p = xdr_inline_decode(xdr, 8);
5728 if (unlikely(!p))
5729 return -EIO;
5730
5731 res->dir = be32_to_cpup(p++);
5732 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5733 return -EIO;
5734 if (be32_to_cpup(p) == 0)
5735 res->use_conn_in_rdma_mode = false;
5736 else
5737 res->use_conn_in_rdma_mode = true;
5738
5739 return 0;
5740 }
5741
5742 static int decode_create_session(struct xdr_stream *xdr,
5743 struct nfs41_create_session_res *res)
5744 {
5745 __be32 *p;
5746 int status;
5747
5748 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5749 if (!status)
5750 status = decode_sessionid(xdr, &res->sessionid);
5751 if (unlikely(status))
5752 return status;
5753
5754 /* seqid, flags */
5755 p = xdr_inline_decode(xdr, 8);
5756 if (unlikely(!p))
5757 return -EIO;
5758 res->seqid = be32_to_cpup(p++);
5759 res->flags = be32_to_cpup(p);
5760
5761 /* Channel attributes */
5762 status = decode_chan_attrs(xdr, &res->fc_attrs);
5763 if (!status)
5764 status = decode_chan_attrs(xdr, &res->bc_attrs);
5765 return status;
5766 }
5767
5768 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5769 {
5770 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5771 }
5772
5773 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5774 {
5775 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5776 }
5777
5778 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5779 {
5780 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5781 }
5782 #endif /* CONFIG_NFS_V4_1 */
5783
5784 static int decode_sequence(struct xdr_stream *xdr,
5785 struct nfs4_sequence_res *res,
5786 struct rpc_rqst *rqstp)
5787 {
5788 #if defined(CONFIG_NFS_V4_1)
5789 struct nfs4_session *session;
5790 struct nfs4_sessionid id;
5791 u32 dummy;
5792 int status;
5793 __be32 *p;
5794
5795 if (res->sr_slot == NULL)
5796 return 0;
5797 if (!res->sr_slot->table->session)
5798 return 0;
5799
5800 status = decode_op_hdr(xdr, OP_SEQUENCE);
5801 if (!status)
5802 status = decode_sessionid(xdr, &id);
5803 if (unlikely(status))
5804 goto out_err;
5805
5806 /*
5807 * If the server returns different values for sessionID, slotID or
5808 * sequence number, the server is looney tunes.
5809 */
5810 status = -EREMOTEIO;
5811 session = res->sr_slot->table->session;
5812
5813 if (memcmp(id.data, session->sess_id.data,
5814 NFS4_MAX_SESSIONID_LEN)) {
5815 dprintk("%s Invalid session id\n", __func__);
5816 goto out_err;
5817 }
5818
5819 p = xdr_inline_decode(xdr, 20);
5820 if (unlikely(!p))
5821 goto out_overflow;
5822
5823 /* seqid */
5824 dummy = be32_to_cpup(p++);
5825 if (dummy != res->sr_slot->seq_nr) {
5826 dprintk("%s Invalid sequence number\n", __func__);
5827 goto out_err;
5828 }
5829 /* slot id */
5830 dummy = be32_to_cpup(p++);
5831 if (dummy != res->sr_slot->slot_nr) {
5832 dprintk("%s Invalid slot id\n", __func__);
5833 goto out_err;
5834 }
5835 /* highest slot id */
5836 res->sr_highest_slotid = be32_to_cpup(p++);
5837 /* target highest slot id */
5838 res->sr_target_highest_slotid = be32_to_cpup(p++);
5839 /* result flags */
5840 res->sr_status_flags = be32_to_cpup(p);
5841 status = 0;
5842 out_err:
5843 res->sr_status = status;
5844 return status;
5845 out_overflow:
5846 status = -EIO;
5847 goto out_err;
5848 #else /* CONFIG_NFS_V4_1 */
5849 return 0;
5850 #endif /* CONFIG_NFS_V4_1 */
5851 }
5852
5853 #if defined(CONFIG_NFS_V4_1)
5854 static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5855 {
5856 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5857 return decode_stateid(xdr, stateid);
5858 }
5859
5860 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5861 struct nfs4_getdeviceinfo_res *res)
5862 {
5863 struct pnfs_device *pdev = res->pdev;
5864 __be32 *p;
5865 uint32_t len, type;
5866 int status;
5867
5868 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5869 if (status) {
5870 if (status == -ETOOSMALL) {
5871 p = xdr_inline_decode(xdr, 4);
5872 if (unlikely(!p))
5873 return -EIO;
5874 pdev->mincount = be32_to_cpup(p);
5875 dprintk("%s: Min count too small. mincnt = %u\n",
5876 __func__, pdev->mincount);
5877 }
5878 return status;
5879 }
5880
5881 p = xdr_inline_decode(xdr, 8);
5882 if (unlikely(!p))
5883 return -EIO;
5884 type = be32_to_cpup(p++);
5885 if (type != pdev->layout_type) {
5886 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5887 __func__, pdev->layout_type, type);
5888 return -EINVAL;
5889 }
5890 /*
5891 * Get the length of the opaque device_addr4. xdr_read_pages places
5892 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5893 * and places the remaining xdr data in xdr_buf->tail
5894 */
5895 pdev->mincount = be32_to_cpup(p);
5896 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5897 return -EIO;
5898
5899 /* Parse notification bitmap, verifying that it is zero. */
5900 p = xdr_inline_decode(xdr, 4);
5901 if (unlikely(!p))
5902 return -EIO;
5903 len = be32_to_cpup(p);
5904 if (len) {
5905 uint32_t i;
5906
5907 p = xdr_inline_decode(xdr, 4 * len);
5908 if (unlikely(!p))
5909 return -EIO;
5910
5911 res->notification = be32_to_cpup(p++);
5912 for (i = 1; i < len; i++) {
5913 if (be32_to_cpup(p++)) {
5914 dprintk("%s: unsupported notification\n",
5915 __func__);
5916 return -EIO;
5917 }
5918 }
5919 }
5920 return 0;
5921 }
5922
5923 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5924 struct nfs4_layoutget_res *res)
5925 {
5926 __be32 *p;
5927 int status;
5928 u32 layout_count;
5929 u32 recvd;
5930
5931 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5932 if (status)
5933 goto out;
5934 p = xdr_inline_decode(xdr, 4);
5935 if (unlikely(!p))
5936 goto out_overflow;
5937 res->return_on_close = be32_to_cpup(p);
5938 decode_layout_stateid(xdr, &res->stateid);
5939 p = xdr_inline_decode(xdr, 4);
5940 if (unlikely(!p))
5941 goto out_overflow;
5942 layout_count = be32_to_cpup(p);
5943 if (!layout_count) {
5944 dprintk("%s: server responded with empty layout array\n",
5945 __func__);
5946 status = -EINVAL;
5947 goto out;
5948 }
5949
5950 p = xdr_inline_decode(xdr, 28);
5951 if (unlikely(!p))
5952 goto out_overflow;
5953 p = xdr_decode_hyper(p, &res->range.offset);
5954 p = xdr_decode_hyper(p, &res->range.length);
5955 res->range.iomode = be32_to_cpup(p++);
5956 res->type = be32_to_cpup(p++);
5957 res->layoutp->len = be32_to_cpup(p);
5958
5959 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5960 __func__,
5961 (unsigned long)res->range.offset,
5962 (unsigned long)res->range.length,
5963 res->range.iomode,
5964 res->type,
5965 res->layoutp->len);
5966
5967 recvd = xdr_read_pages(xdr, res->layoutp->len);
5968 if (res->layoutp->len > recvd) {
5969 dprintk("NFS: server cheating in layoutget reply: "
5970 "layout len %u > recvd %u\n",
5971 res->layoutp->len, recvd);
5972 status = -EINVAL;
5973 goto out;
5974 }
5975
5976 if (layout_count > 1) {
5977 /* We only handle a length one array at the moment. Any
5978 * further entries are just ignored. Note that this means
5979 * the client may see a response that is less than the
5980 * minimum it requested.
5981 */
5982 dprintk("%s: server responded with %d layouts, dropping tail\n",
5983 __func__, layout_count);
5984 }
5985
5986 out:
5987 res->status = status;
5988 return status;
5989 out_overflow:
5990 status = -EIO;
5991 goto out;
5992 }
5993
5994 static int decode_layoutreturn(struct xdr_stream *xdr,
5995 struct nfs4_layoutreturn_res *res)
5996 {
5997 __be32 *p;
5998 int status;
5999
6000 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6001 if (status)
6002 return status;
6003 p = xdr_inline_decode(xdr, 4);
6004 if (unlikely(!p))
6005 return -EIO;
6006 res->lrs_present = be32_to_cpup(p);
6007 if (res->lrs_present)
6008 status = decode_layout_stateid(xdr, &res->stateid);
6009 else
6010 nfs4_stateid_copy(&res->stateid, &invalid_stateid);
6011 return status;
6012 }
6013
6014 static int decode_layoutcommit(struct xdr_stream *xdr,
6015 struct rpc_rqst *req,
6016 struct nfs4_layoutcommit_res *res)
6017 {
6018 __be32 *p;
6019 __u32 sizechanged;
6020 int status;
6021
6022 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6023 res->status = status;
6024 if (status)
6025 return status;
6026
6027 p = xdr_inline_decode(xdr, 4);
6028 if (unlikely(!p))
6029 return -EIO;
6030 sizechanged = be32_to_cpup(p);
6031
6032 if (sizechanged) {
6033 /* throw away new size */
6034 p = xdr_inline_decode(xdr, 8);
6035 if (unlikely(!p))
6036 return -EIO;
6037 }
6038 return 0;
6039 }
6040
6041 static int decode_test_stateid(struct xdr_stream *xdr,
6042 struct nfs41_test_stateid_res *res)
6043 {
6044 __be32 *p;
6045 int status;
6046 int num_res;
6047
6048 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6049 if (status)
6050 return status;
6051
6052 p = xdr_inline_decode(xdr, 4);
6053 if (unlikely(!p))
6054 return -EIO;
6055 num_res = be32_to_cpup(p++);
6056 if (num_res != 1)
6057 return -EIO;
6058
6059 p = xdr_inline_decode(xdr, 4);
6060 if (unlikely(!p))
6061 return -EIO;
6062 res->status = be32_to_cpup(p++);
6063
6064 return status;
6065 }
6066
6067 static int decode_free_stateid(struct xdr_stream *xdr,
6068 struct nfs41_free_stateid_res *res)
6069 {
6070 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6071 return res->status;
6072 }
6073 #else
6074 static inline
6075 int decode_layoutreturn(struct xdr_stream *xdr,
6076 struct nfs4_layoutreturn_res *res)
6077 {
6078 return 0;
6079 }
6080
6081 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6082 struct nfs4_layoutget_res *res)
6083 {
6084 return 0;
6085 }
6086
6087 #endif /* CONFIG_NFS_V4_1 */
6088
6089 /*
6090 * END OF "GENERIC" DECODE ROUTINES.
6091 */
6092
6093 /*
6094 * Decode OPEN_DOWNGRADE response
6095 */
6096 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6097 struct xdr_stream *xdr,
6098 void *data)
6099 {
6100 struct nfs_closeres *res = data;
6101 struct compound_hdr hdr;
6102 int status;
6103
6104 status = decode_compound_hdr(xdr, &hdr);
6105 if (status)
6106 goto out;
6107 status = decode_sequence(xdr, &res->seq_res, rqstp);
6108 if (status)
6109 goto out;
6110 status = decode_putfh(xdr);
6111 if (status)
6112 goto out;
6113 if (res->lr_res) {
6114 status = decode_layoutreturn(xdr, res->lr_res);
6115 res->lr_ret = status;
6116 if (status)
6117 goto out;
6118 }
6119 status = decode_open_downgrade(xdr, res);
6120 out:
6121 return status;
6122 }
6123
6124 /*
6125 * Decode ACCESS response
6126 */
6127 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6128 void *data)
6129 {
6130 struct nfs4_accessres *res = data;
6131 struct compound_hdr hdr;
6132 int status;
6133
6134 status = decode_compound_hdr(xdr, &hdr);
6135 if (status)
6136 goto out;
6137 status = decode_sequence(xdr, &res->seq_res, rqstp);
6138 if (status)
6139 goto out;
6140 status = decode_putfh(xdr);
6141 if (status != 0)
6142 goto out;
6143 status = decode_access(xdr, &res->supported, &res->access);
6144 if (status != 0)
6145 goto out;
6146 if (res->fattr)
6147 decode_getfattr(xdr, res->fattr, res->server);
6148 out:
6149 return status;
6150 }
6151
6152 /*
6153 * Decode LOOKUP response
6154 */
6155 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6156 void *data)
6157 {
6158 struct nfs4_lookup_res *res = data;
6159 struct compound_hdr hdr;
6160 int status;
6161
6162 status = decode_compound_hdr(xdr, &hdr);
6163 if (status)
6164 goto out;
6165 status = decode_sequence(xdr, &res->seq_res, rqstp);
6166 if (status)
6167 goto out;
6168 status = decode_putfh(xdr);
6169 if (status)
6170 goto out;
6171 status = decode_lookup(xdr);
6172 if (status)
6173 goto out;
6174 status = decode_getfh(xdr, res->fh);
6175 if (status)
6176 goto out;
6177 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6178 out:
6179 return status;
6180 }
6181
6182 /*
6183 * Decode LOOKUPP response
6184 */
6185 static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6186 void *data)
6187 {
6188 struct nfs4_lookupp_res *res = data;
6189 struct compound_hdr hdr;
6190 int status;
6191
6192 status = decode_compound_hdr(xdr, &hdr);
6193 if (status)
6194 goto out;
6195 status = decode_sequence(xdr, &res->seq_res, rqstp);
6196 if (status)
6197 goto out;
6198 status = decode_putfh(xdr);
6199 if (status)
6200 goto out;
6201 status = decode_lookupp(xdr);
6202 if (status)
6203 goto out;
6204 status = decode_getfh(xdr, res->fh);
6205 if (status)
6206 goto out;
6207 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6208 out:
6209 return status;
6210 }
6211
6212 /*
6213 * Decode LOOKUP_ROOT response
6214 */
6215 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6216 struct xdr_stream *xdr,
6217 void *data)
6218 {
6219 struct nfs4_lookup_res *res = data;
6220 struct compound_hdr hdr;
6221 int status;
6222
6223 status = decode_compound_hdr(xdr, &hdr);
6224 if (status)
6225 goto out;
6226 status = decode_sequence(xdr, &res->seq_res, rqstp);
6227 if (status)
6228 goto out;
6229 status = decode_putrootfh(xdr);
6230 if (status)
6231 goto out;
6232 status = decode_getfh(xdr, res->fh);
6233 if (status == 0)
6234 status = decode_getfattr_label(xdr, res->fattr,
6235 res->label, res->server);
6236 out:
6237 return status;
6238 }
6239
6240 /*
6241 * Decode REMOVE response
6242 */
6243 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6244 void *data)
6245 {
6246 struct nfs_removeres *res = data;
6247 struct compound_hdr hdr;
6248 int status;
6249
6250 status = decode_compound_hdr(xdr, &hdr);
6251 if (status)
6252 goto out;
6253 status = decode_sequence(xdr, &res->seq_res, rqstp);
6254 if (status)
6255 goto out;
6256 status = decode_putfh(xdr);
6257 if (status)
6258 goto out;
6259 status = decode_remove(xdr, &res->cinfo);
6260 out:
6261 return status;
6262 }
6263
6264 /*
6265 * Decode RENAME response
6266 */
6267 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6268 void *data)
6269 {
6270 struct nfs_renameres *res = data;
6271 struct compound_hdr hdr;
6272 int status;
6273
6274 status = decode_compound_hdr(xdr, &hdr);
6275 if (status)
6276 goto out;
6277 status = decode_sequence(xdr, &res->seq_res, rqstp);
6278 if (status)
6279 goto out;
6280 status = decode_putfh(xdr);
6281 if (status)
6282 goto out;
6283 status = decode_savefh(xdr);
6284 if (status)
6285 goto out;
6286 status = decode_putfh(xdr);
6287 if (status)
6288 goto out;
6289 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6290 out:
6291 return status;
6292 }
6293
6294 /*
6295 * Decode LINK response
6296 */
6297 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6298 void *data)
6299 {
6300 struct nfs4_link_res *res = data;
6301 struct compound_hdr hdr;
6302 int status;
6303
6304 status = decode_compound_hdr(xdr, &hdr);
6305 if (status)
6306 goto out;
6307 status = decode_sequence(xdr, &res->seq_res, rqstp);
6308 if (status)
6309 goto out;
6310 status = decode_putfh(xdr);
6311 if (status)
6312 goto out;
6313 status = decode_savefh(xdr);
6314 if (status)
6315 goto out;
6316 status = decode_putfh(xdr);
6317 if (status)
6318 goto out;
6319 status = decode_link(xdr, &res->cinfo);
6320 if (status)
6321 goto out;
6322 /*
6323 * Note order: OP_LINK leaves the directory as the current
6324 * filehandle.
6325 */
6326 status = decode_restorefh(xdr);
6327 if (status)
6328 goto out;
6329 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6330 out:
6331 return status;
6332 }
6333
6334 /*
6335 * Decode CREATE response
6336 */
6337 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6338 void *data)
6339 {
6340 struct nfs4_create_res *res = data;
6341 struct compound_hdr hdr;
6342 int status;
6343
6344 status = decode_compound_hdr(xdr, &hdr);
6345 if (status)
6346 goto out;
6347 status = decode_sequence(xdr, &res->seq_res, rqstp);
6348 if (status)
6349 goto out;
6350 status = decode_putfh(xdr);
6351 if (status)
6352 goto out;
6353 status = decode_create(xdr, &res->dir_cinfo);
6354 if (status)
6355 goto out;
6356 status = decode_getfh(xdr, res->fh);
6357 if (status)
6358 goto out;
6359 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6360 out:
6361 return status;
6362 }
6363
6364 /*
6365 * Decode SYMLINK response
6366 */
6367 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6368 void *res)
6369 {
6370 return nfs4_xdr_dec_create(rqstp, xdr, res);
6371 }
6372
6373 /*
6374 * Decode GETATTR response
6375 */
6376 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6377 void *data)
6378 {
6379 struct nfs4_getattr_res *res = data;
6380 struct compound_hdr hdr;
6381 int status;
6382
6383 status = decode_compound_hdr(xdr, &hdr);
6384 if (status)
6385 goto out;
6386 status = decode_sequence(xdr, &res->seq_res, rqstp);
6387 if (status)
6388 goto out;
6389 status = decode_putfh(xdr);
6390 if (status)
6391 goto out;
6392 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6393 out:
6394 return status;
6395 }
6396
6397 /*
6398 * Encode an SETACL request
6399 */
6400 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6401 const void *data)
6402 {
6403 const struct nfs_setaclargs *args = data;
6404 struct compound_hdr hdr = {
6405 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6406 };
6407
6408 encode_compound_hdr(xdr, req, &hdr);
6409 encode_sequence(xdr, &args->seq_args, &hdr);
6410 encode_putfh(xdr, args->fh, &hdr);
6411 encode_setacl(xdr, args, &hdr);
6412 encode_nops(&hdr);
6413 }
6414
6415 /*
6416 * Decode SETACL response
6417 */
6418 static int
6419 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6420 void *data)
6421 {
6422 struct nfs_setaclres *res = data;
6423 struct compound_hdr hdr;
6424 int status;
6425
6426 status = decode_compound_hdr(xdr, &hdr);
6427 if (status)
6428 goto out;
6429 status = decode_sequence(xdr, &res->seq_res, rqstp);
6430 if (status)
6431 goto out;
6432 status = decode_putfh(xdr);
6433 if (status)
6434 goto out;
6435 status = decode_setattr(xdr);
6436 out:
6437 return status;
6438 }
6439
6440 /*
6441 * Decode GETACL response
6442 */
6443 static int
6444 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6445 void *data)
6446 {
6447 struct nfs_getaclres *res = data;
6448 struct compound_hdr hdr;
6449 int status;
6450
6451 if (res->acl_scratch != NULL)
6452 xdr_set_scratch_page(xdr, res->acl_scratch);
6453 status = decode_compound_hdr(xdr, &hdr);
6454 if (status)
6455 goto out;
6456 status = decode_sequence(xdr, &res->seq_res, rqstp);
6457 if (status)
6458 goto out;
6459 status = decode_putfh(xdr);
6460 if (status)
6461 goto out;
6462 status = decode_getacl(xdr, rqstp, res);
6463
6464 out:
6465 return status;
6466 }
6467
6468 /*
6469 * Decode CLOSE response
6470 */
6471 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6472 void *data)
6473 {
6474 struct nfs_closeres *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 if (res->lr_res) {
6488 status = decode_layoutreturn(xdr, res->lr_res);
6489 res->lr_ret = status;
6490 if (status)
6491 goto out;
6492 }
6493 if (res->fattr != NULL) {
6494 status = decode_getfattr(xdr, res->fattr, res->server);
6495 if (status != 0)
6496 goto out;
6497 }
6498 status = decode_close(xdr, res);
6499 out:
6500 return status;
6501 }
6502
6503 /*
6504 * Decode OPEN response
6505 */
6506 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6507 void *data)
6508 {
6509 struct nfs_openres *res = data;
6510 struct compound_hdr hdr;
6511 int status;
6512
6513 status = decode_compound_hdr(xdr, &hdr);
6514 if (status)
6515 goto out;
6516 status = decode_sequence(xdr, &res->seq_res, rqstp);
6517 if (status)
6518 goto out;
6519 status = decode_putfh(xdr);
6520 if (status)
6521 goto out;
6522 status = decode_open(xdr, res);
6523 if (status)
6524 goto out;
6525 status = decode_getfh(xdr, &res->fh);
6526 if (status)
6527 goto out;
6528 if (res->access_request)
6529 decode_access(xdr, &res->access_supported, &res->access_result);
6530 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6531 if (res->lg_res)
6532 decode_layoutget(xdr, rqstp, res->lg_res);
6533 out:
6534 return status;
6535 }
6536
6537 /*
6538 * Decode OPEN_CONFIRM response
6539 */
6540 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6541 struct xdr_stream *xdr,
6542 void *data)
6543 {
6544 struct nfs_open_confirmres *res = data;
6545 struct compound_hdr hdr;
6546 int status;
6547
6548 status = decode_compound_hdr(xdr, &hdr);
6549 if (status)
6550 goto out;
6551 status = decode_putfh(xdr);
6552 if (status)
6553 goto out;
6554 status = decode_open_confirm(xdr, res);
6555 out:
6556 return status;
6557 }
6558
6559 /*
6560 * Decode OPEN response
6561 */
6562 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6563 struct xdr_stream *xdr,
6564 void *data)
6565 {
6566 struct nfs_openres *res = data;
6567 struct compound_hdr hdr;
6568 int status;
6569
6570 status = decode_compound_hdr(xdr, &hdr);
6571 if (status)
6572 goto out;
6573 status = decode_sequence(xdr, &res->seq_res, rqstp);
6574 if (status)
6575 goto out;
6576 status = decode_putfh(xdr);
6577 if (status)
6578 goto out;
6579 status = decode_open(xdr, res);
6580 if (status)
6581 goto out;
6582 if (res->access_request)
6583 decode_access(xdr, &res->access_supported, &res->access_result);
6584 decode_getfattr(xdr, res->f_attr, res->server);
6585 if (res->lg_res)
6586 decode_layoutget(xdr, rqstp, res->lg_res);
6587 out:
6588 return status;
6589 }
6590
6591 /*
6592 * Decode SETATTR response
6593 */
6594 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6595 struct xdr_stream *xdr,
6596 void *data)
6597 {
6598 struct nfs_setattrres *res = data;
6599 struct compound_hdr hdr;
6600 int status;
6601
6602 status = decode_compound_hdr(xdr, &hdr);
6603 if (status)
6604 goto out;
6605 status = decode_sequence(xdr, &res->seq_res, rqstp);
6606 if (status)
6607 goto out;
6608 status = decode_putfh(xdr);
6609 if (status)
6610 goto out;
6611 status = decode_setattr(xdr);
6612 if (status)
6613 goto out;
6614 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6615 out:
6616 return status;
6617 }
6618
6619 /*
6620 * Decode LOCK response
6621 */
6622 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6623 void *data)
6624 {
6625 struct nfs_lock_res *res = data;
6626 struct compound_hdr hdr;
6627 int status;
6628
6629 status = decode_compound_hdr(xdr, &hdr);
6630 if (status)
6631 goto out;
6632 status = decode_sequence(xdr, &res->seq_res, rqstp);
6633 if (status)
6634 goto out;
6635 status = decode_putfh(xdr);
6636 if (status)
6637 goto out;
6638 status = decode_lock(xdr, res);
6639 out:
6640 return status;
6641 }
6642
6643 /*
6644 * Decode LOCKT response
6645 */
6646 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6647 void *data)
6648 {
6649 struct nfs_lockt_res *res = data;
6650 struct compound_hdr hdr;
6651 int status;
6652
6653 status = decode_compound_hdr(xdr, &hdr);
6654 if (status)
6655 goto out;
6656 status = decode_sequence(xdr, &res->seq_res, rqstp);
6657 if (status)
6658 goto out;
6659 status = decode_putfh(xdr);
6660 if (status)
6661 goto out;
6662 status = decode_lockt(xdr, res);
6663 out:
6664 return status;
6665 }
6666
6667 /*
6668 * Decode LOCKU response
6669 */
6670 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6671 void *data)
6672 {
6673 struct nfs_locku_res *res = data;
6674 struct compound_hdr hdr;
6675 int status;
6676
6677 status = decode_compound_hdr(xdr, &hdr);
6678 if (status)
6679 goto out;
6680 status = decode_sequence(xdr, &res->seq_res, rqstp);
6681 if (status)
6682 goto out;
6683 status = decode_putfh(xdr);
6684 if (status)
6685 goto out;
6686 status = decode_locku(xdr, res);
6687 out:
6688 return status;
6689 }
6690
6691 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6692 struct xdr_stream *xdr, void *dummy)
6693 {
6694 struct compound_hdr hdr;
6695 int status;
6696
6697 status = decode_compound_hdr(xdr, &hdr);
6698 if (!status)
6699 status = decode_release_lockowner(xdr);
6700 return status;
6701 }
6702
6703 /*
6704 * Decode READLINK response
6705 */
6706 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6707 struct xdr_stream *xdr,
6708 void *data)
6709 {
6710 struct nfs4_readlink_res *res = data;
6711 struct compound_hdr hdr;
6712 int status;
6713
6714 status = decode_compound_hdr(xdr, &hdr);
6715 if (status)
6716 goto out;
6717 status = decode_sequence(xdr, &res->seq_res, rqstp);
6718 if (status)
6719 goto out;
6720 status = decode_putfh(xdr);
6721 if (status)
6722 goto out;
6723 status = decode_readlink(xdr, rqstp);
6724 out:
6725 return status;
6726 }
6727
6728 /*
6729 * Decode READDIR response
6730 */
6731 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6732 void *data)
6733 {
6734 struct nfs4_readdir_res *res = data;
6735 struct compound_hdr hdr;
6736 int status;
6737
6738 status = decode_compound_hdr(xdr, &hdr);
6739 if (status)
6740 goto out;
6741 status = decode_sequence(xdr, &res->seq_res, rqstp);
6742 if (status)
6743 goto out;
6744 status = decode_putfh(xdr);
6745 if (status)
6746 goto out;
6747 status = decode_readdir(xdr, rqstp, res);
6748 out:
6749 return status;
6750 }
6751
6752 /*
6753 * Decode Read response
6754 */
6755 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6756 void *data)
6757 {
6758 struct nfs_pgio_res *res = data;
6759 struct compound_hdr hdr;
6760 int status;
6761
6762 status = decode_compound_hdr(xdr, &hdr);
6763 res->op_status = hdr.status;
6764 if (status)
6765 goto out;
6766 status = decode_sequence(xdr, &res->seq_res, rqstp);
6767 if (status)
6768 goto out;
6769 status = decode_putfh(xdr);
6770 if (status)
6771 goto out;
6772 status = decode_read(xdr, rqstp, res);
6773 if (!status)
6774 status = res->count;
6775 out:
6776 return status;
6777 }
6778
6779 /*
6780 * Decode WRITE response
6781 */
6782 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6783 void *data)
6784 {
6785 struct nfs_pgio_res *res = data;
6786 struct compound_hdr hdr;
6787 int status;
6788
6789 status = decode_compound_hdr(xdr, &hdr);
6790 res->op_status = hdr.status;
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_write(xdr, res);
6800 if (status)
6801 goto out;
6802 if (res->fattr)
6803 decode_getfattr(xdr, res->fattr, res->server);
6804 if (!status)
6805 status = res->count;
6806 out:
6807 return status;
6808 }
6809
6810 /*
6811 * Decode COMMIT response
6812 */
6813 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6814 void *data)
6815 {
6816 struct nfs_commitres *res = data;
6817 struct compound_hdr hdr;
6818 int status;
6819
6820 status = decode_compound_hdr(xdr, &hdr);
6821 res->op_status = hdr.status;
6822 if (status)
6823 goto out;
6824 status = decode_sequence(xdr, &res->seq_res, rqstp);
6825 if (status)
6826 goto out;
6827 status = decode_putfh(xdr);
6828 if (status)
6829 goto out;
6830 status = decode_commit(xdr, res);
6831 out:
6832 return status;
6833 }
6834
6835 /*
6836 * Decode FSINFO response
6837 */
6838 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6839 void *data)
6840 {
6841 struct nfs4_fsinfo_res *res = data;
6842 struct compound_hdr hdr;
6843 int status;
6844
6845 status = decode_compound_hdr(xdr, &hdr);
6846 if (!status)
6847 status = decode_sequence(xdr, &res->seq_res, req);
6848 if (!status)
6849 status = decode_putfh(xdr);
6850 if (!status)
6851 status = decode_fsinfo(xdr, res->fsinfo);
6852 return status;
6853 }
6854
6855 /*
6856 * Decode PATHCONF response
6857 */
6858 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6859 void *data)
6860 {
6861 struct nfs4_pathconf_res *res = data;
6862 struct compound_hdr hdr;
6863 int status;
6864
6865 status = decode_compound_hdr(xdr, &hdr);
6866 if (!status)
6867 status = decode_sequence(xdr, &res->seq_res, req);
6868 if (!status)
6869 status = decode_putfh(xdr);
6870 if (!status)
6871 status = decode_pathconf(xdr, res->pathconf);
6872 return status;
6873 }
6874
6875 /*
6876 * Decode STATFS response
6877 */
6878 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6879 void *data)
6880 {
6881 struct nfs4_statfs_res *res = data;
6882 struct compound_hdr hdr;
6883 int status;
6884
6885 status = decode_compound_hdr(xdr, &hdr);
6886 if (!status)
6887 status = decode_sequence(xdr, &res->seq_res, req);
6888 if (!status)
6889 status = decode_putfh(xdr);
6890 if (!status)
6891 status = decode_statfs(xdr, res->fsstat);
6892 return status;
6893 }
6894
6895 /*
6896 * Decode GETATTR_BITMAP response
6897 */
6898 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6899 struct xdr_stream *xdr,
6900 void *data)
6901 {
6902 struct nfs4_server_caps_res *res = data;
6903 struct compound_hdr hdr;
6904 int status;
6905
6906 status = decode_compound_hdr(xdr, &hdr);
6907 if (status)
6908 goto out;
6909 status = decode_sequence(xdr, &res->seq_res, req);
6910 if (status)
6911 goto out;
6912 status = decode_putfh(xdr);
6913 if (status)
6914 goto out;
6915 status = decode_server_caps(xdr, res);
6916 out:
6917 return status;
6918 }
6919
6920 /*
6921 * Decode RENEW response
6922 */
6923 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6924 void *__unused)
6925 {
6926 struct compound_hdr hdr;
6927 int status;
6928
6929 status = decode_compound_hdr(xdr, &hdr);
6930 if (!status)
6931 status = decode_renew(xdr);
6932 return status;
6933 }
6934
6935 /*
6936 * Decode SETCLIENTID response
6937 */
6938 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6939 struct xdr_stream *xdr,
6940 void *data)
6941 {
6942 struct nfs4_setclientid_res *res = data;
6943 struct compound_hdr hdr;
6944 int status;
6945
6946 status = decode_compound_hdr(xdr, &hdr);
6947 if (!status)
6948 status = decode_setclientid(xdr, res);
6949 return status;
6950 }
6951
6952 /*
6953 * Decode SETCLIENTID_CONFIRM response
6954 */
6955 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6956 struct xdr_stream *xdr,
6957 void *data)
6958 {
6959 struct compound_hdr hdr;
6960 int status;
6961
6962 status = decode_compound_hdr(xdr, &hdr);
6963 if (!status)
6964 status = decode_setclientid_confirm(xdr);
6965 return status;
6966 }
6967
6968 /*
6969 * Decode DELEGRETURN response
6970 */
6971 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6972 struct xdr_stream *xdr,
6973 void *data)
6974 {
6975 struct nfs4_delegreturnres *res = data;
6976 struct compound_hdr hdr;
6977 int status;
6978
6979 status = decode_compound_hdr(xdr, &hdr);
6980 if (status)
6981 goto out;
6982 status = decode_sequence(xdr, &res->seq_res, rqstp);
6983 if (status)
6984 goto out;
6985 status = decode_putfh(xdr);
6986 if (status != 0)
6987 goto out;
6988 if (res->lr_res) {
6989 status = decode_layoutreturn(xdr, res->lr_res);
6990 res->lr_ret = status;
6991 if (status)
6992 goto out;
6993 }
6994 if (res->fattr) {
6995 status = decode_getfattr(xdr, res->fattr, res->server);
6996 if (status != 0)
6997 goto out;
6998 }
6999 status = decode_delegreturn(xdr);
7000 out:
7001 return status;
7002 }
7003
7004 /*
7005 * Decode FS_LOCATIONS response
7006 */
7007 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7008 struct xdr_stream *xdr,
7009 void *data)
7010 {
7011 struct nfs4_fs_locations_res *res = data;
7012 struct compound_hdr hdr;
7013 int status;
7014
7015 status = decode_compound_hdr(xdr, &hdr);
7016 if (status)
7017 goto out;
7018 status = decode_sequence(xdr, &res->seq_res, req);
7019 if (status)
7020 goto out;
7021 status = decode_putfh(xdr);
7022 if (status)
7023 goto out;
7024 if (res->migration) {
7025 xdr_enter_page(xdr, PAGE_SIZE);
7026 status = decode_getfattr_generic(xdr,
7027 &res->fs_locations->fattr,
7028 NULL, res->fs_locations,
7029 NULL, res->fs_locations->server);
7030 if (status)
7031 goto out;
7032 if (res->renew)
7033 status = decode_renew(xdr);
7034 } else {
7035 status = decode_lookup(xdr);
7036 if (status)
7037 goto out;
7038 xdr_enter_page(xdr, PAGE_SIZE);
7039 status = decode_getfattr_generic(xdr,
7040 &res->fs_locations->fattr,
7041 NULL, res->fs_locations,
7042 NULL, res->fs_locations->server);
7043 }
7044 out:
7045 return status;
7046 }
7047
7048 /*
7049 * Decode SECINFO response
7050 */
7051 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7052 struct xdr_stream *xdr,
7053 void *data)
7054 {
7055 struct nfs4_secinfo_res *res = data;
7056 struct compound_hdr hdr;
7057 int status;
7058
7059 status = decode_compound_hdr(xdr, &hdr);
7060 if (status)
7061 goto out;
7062 status = decode_sequence(xdr, &res->seq_res, rqstp);
7063 if (status)
7064 goto out;
7065 status = decode_putfh(xdr);
7066 if (status)
7067 goto out;
7068 status = decode_secinfo(xdr, res);
7069 out:
7070 return status;
7071 }
7072
7073 /*
7074 * Decode FSID_PRESENT response
7075 */
7076 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7077 struct xdr_stream *xdr,
7078 void *data)
7079 {
7080 struct nfs4_fsid_present_res *res = data;
7081 struct compound_hdr hdr;
7082 int status;
7083
7084 status = decode_compound_hdr(xdr, &hdr);
7085 if (status)
7086 goto out;
7087 status = decode_sequence(xdr, &res->seq_res, rqstp);
7088 if (status)
7089 goto out;
7090 status = decode_putfh(xdr);
7091 if (status)
7092 goto out;
7093 status = decode_getfh(xdr, res->fh);
7094 if (status)
7095 goto out;
7096 if (res->renew)
7097 status = decode_renew(xdr);
7098 out:
7099 return status;
7100 }
7101
7102 #if defined(CONFIG_NFS_V4_1)
7103 /*
7104 * Decode BIND_CONN_TO_SESSION response
7105 */
7106 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7107 struct xdr_stream *xdr,
7108 void *res)
7109 {
7110 struct compound_hdr hdr;
7111 int status;
7112
7113 status = decode_compound_hdr(xdr, &hdr);
7114 if (!status)
7115 status = decode_bind_conn_to_session(xdr, res);
7116 return status;
7117 }
7118
7119 /*
7120 * Decode EXCHANGE_ID response
7121 */
7122 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7123 struct xdr_stream *xdr,
7124 void *res)
7125 {
7126 struct compound_hdr hdr;
7127 int status;
7128
7129 status = decode_compound_hdr(xdr, &hdr);
7130 if (!status)
7131 status = decode_exchange_id(xdr, res);
7132 return status;
7133 }
7134
7135 /*
7136 * Decode CREATE_SESSION response
7137 */
7138 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7139 struct xdr_stream *xdr,
7140 void *res)
7141 {
7142 struct compound_hdr hdr;
7143 int status;
7144
7145 status = decode_compound_hdr(xdr, &hdr);
7146 if (!status)
7147 status = decode_create_session(xdr, res);
7148 return status;
7149 }
7150
7151 /*
7152 * Decode DESTROY_SESSION response
7153 */
7154 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7155 struct xdr_stream *xdr,
7156 void *res)
7157 {
7158 struct compound_hdr hdr;
7159 int status;
7160
7161 status = decode_compound_hdr(xdr, &hdr);
7162 if (!status)
7163 status = decode_destroy_session(xdr, res);
7164 return status;
7165 }
7166
7167 /*
7168 * Decode DESTROY_CLIENTID response
7169 */
7170 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7171 struct xdr_stream *xdr,
7172 void *res)
7173 {
7174 struct compound_hdr hdr;
7175 int status;
7176
7177 status = decode_compound_hdr(xdr, &hdr);
7178 if (!status)
7179 status = decode_destroy_clientid(xdr, res);
7180 return status;
7181 }
7182
7183 /*
7184 * Decode SEQUENCE response
7185 */
7186 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7187 struct xdr_stream *xdr,
7188 void *res)
7189 {
7190 struct compound_hdr hdr;
7191 int status;
7192
7193 status = decode_compound_hdr(xdr, &hdr);
7194 if (!status)
7195 status = decode_sequence(xdr, res, rqstp);
7196 return status;
7197 }
7198
7199 #endif
7200
7201 /*
7202 * Decode GET_LEASE_TIME response
7203 */
7204 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7205 struct xdr_stream *xdr,
7206 void *data)
7207 {
7208 struct nfs4_get_lease_time_res *res = data;
7209 struct compound_hdr hdr;
7210 int status;
7211
7212 status = decode_compound_hdr(xdr, &hdr);
7213 if (!status)
7214 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7215 if (!status)
7216 status = decode_putrootfh(xdr);
7217 if (!status)
7218 status = decode_fsinfo(xdr, res->lr_fsinfo);
7219 return status;
7220 }
7221
7222 #ifdef CONFIG_NFS_V4_1
7223
7224 /*
7225 * Decode RECLAIM_COMPLETE response
7226 */
7227 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7228 struct xdr_stream *xdr,
7229 void *data)
7230 {
7231 struct nfs41_reclaim_complete_res *res = data;
7232 struct compound_hdr hdr;
7233 int status;
7234
7235 status = decode_compound_hdr(xdr, &hdr);
7236 if (!status)
7237 status = decode_sequence(xdr, &res->seq_res, rqstp);
7238 if (!status)
7239 status = decode_reclaim_complete(xdr, NULL);
7240 return status;
7241 }
7242
7243 /*
7244 * Decode GETDEVINFO response
7245 */
7246 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7247 struct xdr_stream *xdr,
7248 void *data)
7249 {
7250 struct nfs4_getdeviceinfo_res *res = data;
7251 struct compound_hdr hdr;
7252 int status;
7253
7254 status = decode_compound_hdr(xdr, &hdr);
7255 if (status != 0)
7256 goto out;
7257 status = decode_sequence(xdr, &res->seq_res, rqstp);
7258 if (status != 0)
7259 goto out;
7260 status = decode_getdeviceinfo(xdr, res);
7261 out:
7262 return status;
7263 }
7264
7265 /*
7266 * Decode LAYOUTGET response
7267 */
7268 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7269 struct xdr_stream *xdr,
7270 void *data)
7271 {
7272 struct nfs4_layoutget_res *res = data;
7273 struct compound_hdr hdr;
7274 int status;
7275
7276 status = decode_compound_hdr(xdr, &hdr);
7277 if (status)
7278 goto out;
7279 status = decode_sequence(xdr, &res->seq_res, rqstp);
7280 if (status)
7281 goto out;
7282 status = decode_putfh(xdr);
7283 if (status)
7284 goto out;
7285 status = decode_layoutget(xdr, rqstp, res);
7286 out:
7287 return status;
7288 }
7289
7290 /*
7291 * Decode LAYOUTRETURN response
7292 */
7293 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7294 struct xdr_stream *xdr,
7295 void *data)
7296 {
7297 struct nfs4_layoutreturn_res *res = data;
7298 struct compound_hdr hdr;
7299 int status;
7300
7301 status = decode_compound_hdr(xdr, &hdr);
7302 if (status)
7303 goto out;
7304 status = decode_sequence(xdr, &res->seq_res, rqstp);
7305 if (status)
7306 goto out;
7307 status = decode_putfh(xdr);
7308 if (status)
7309 goto out;
7310 status = decode_layoutreturn(xdr, res);
7311 out:
7312 return status;
7313 }
7314
7315 /*
7316 * Decode LAYOUTCOMMIT response
7317 */
7318 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7319 struct xdr_stream *xdr,
7320 void *data)
7321 {
7322 struct nfs4_layoutcommit_res *res = data;
7323 struct compound_hdr hdr;
7324 int status;
7325
7326 status = decode_compound_hdr(xdr, &hdr);
7327 if (status)
7328 goto out;
7329 status = decode_sequence(xdr, &res->seq_res, rqstp);
7330 if (status)
7331 goto out;
7332 status = decode_putfh(xdr);
7333 if (status)
7334 goto out;
7335 status = decode_layoutcommit(xdr, rqstp, res);
7336 if (status)
7337 goto out;
7338 decode_getfattr(xdr, res->fattr, res->server);
7339 out:
7340 return status;
7341 }
7342
7343 /*
7344 * Decode SECINFO_NO_NAME response
7345 */
7346 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7347 struct xdr_stream *xdr,
7348 void *data)
7349 {
7350 struct nfs4_secinfo_res *res = data;
7351 struct compound_hdr hdr;
7352 int status;
7353
7354 status = decode_compound_hdr(xdr, &hdr);
7355 if (status)
7356 goto out;
7357 status = decode_sequence(xdr, &res->seq_res, rqstp);
7358 if (status)
7359 goto out;
7360 status = decode_putrootfh(xdr);
7361 if (status)
7362 goto out;
7363 status = decode_secinfo_no_name(xdr, res);
7364 out:
7365 return status;
7366 }
7367
7368 /*
7369 * Decode TEST_STATEID response
7370 */
7371 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7372 struct xdr_stream *xdr,
7373 void *data)
7374 {
7375 struct nfs41_test_stateid_res *res = data;
7376 struct compound_hdr hdr;
7377 int status;
7378
7379 status = decode_compound_hdr(xdr, &hdr);
7380 if (status)
7381 goto out;
7382 status = decode_sequence(xdr, &res->seq_res, rqstp);
7383 if (status)
7384 goto out;
7385 status = decode_test_stateid(xdr, res);
7386 out:
7387 return status;
7388 }
7389
7390 /*
7391 * Decode FREE_STATEID response
7392 */
7393 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7394 struct xdr_stream *xdr,
7395 void *data)
7396 {
7397 struct nfs41_free_stateid_res *res = data;
7398 struct compound_hdr hdr;
7399 int status;
7400
7401 status = decode_compound_hdr(xdr, &hdr);
7402 if (status)
7403 goto out;
7404 status = decode_sequence(xdr, &res->seq_res, rqstp);
7405 if (status)
7406 goto out;
7407 status = decode_free_stateid(xdr, res);
7408 out:
7409 return status;
7410 }
7411 #endif /* CONFIG_NFS_V4_1 */
7412
7413 /**
7414 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7415 * the local page cache.
7416 * @xdr: XDR stream where entry resides
7417 * @entry: buffer to fill in with entry data
7418 * @plus: boolean indicating whether this should be a readdirplus entry
7419 *
7420 * Returns zero if successful, otherwise a negative errno value is
7421 * returned.
7422 *
7423 * This function is not invoked during READDIR reply decoding, but
7424 * rather whenever an application invokes the getdents(2) system call
7425 * on a directory already in our cache.
7426 */
7427 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7428 bool plus)
7429 {
7430 unsigned int savep;
7431 uint32_t bitmap[3] = {0};
7432 uint32_t len;
7433 uint64_t new_cookie;
7434 __be32 *p = xdr_inline_decode(xdr, 4);
7435 if (unlikely(!p))
7436 return -EAGAIN;
7437 if (*p == xdr_zero) {
7438 p = xdr_inline_decode(xdr, 4);
7439 if (unlikely(!p))
7440 return -EAGAIN;
7441 if (*p == xdr_zero)
7442 return -EAGAIN;
7443 entry->eof = 1;
7444 return -EBADCOOKIE;
7445 }
7446
7447 p = xdr_inline_decode(xdr, 12);
7448 if (unlikely(!p))
7449 return -EAGAIN;
7450 p = xdr_decode_hyper(p, &new_cookie);
7451 entry->len = be32_to_cpup(p);
7452
7453 p = xdr_inline_decode(xdr, entry->len);
7454 if (unlikely(!p))
7455 return -EAGAIN;
7456 entry->name = (const char *) p;
7457
7458 /*
7459 * In case the server doesn't return an inode number,
7460 * we fake one here. (We don't use inode number 0,
7461 * since glibc seems to choke on it...)
7462 */
7463 entry->ino = 1;
7464 entry->fattr->valid = 0;
7465
7466 if (decode_attr_bitmap(xdr, bitmap) < 0)
7467 return -EAGAIN;
7468
7469 if (decode_attr_length(xdr, &len, &savep) < 0)
7470 return -EAGAIN;
7471
7472 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7473 NULL, entry->label, entry->server) < 0)
7474 return -EAGAIN;
7475 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7476 entry->ino = entry->fattr->mounted_on_fileid;
7477 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7478 entry->ino = entry->fattr->fileid;
7479
7480 entry->d_type = DT_UNKNOWN;
7481 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7482 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7483
7484 entry->prev_cookie = entry->cookie;
7485 entry->cookie = new_cookie;
7486
7487 return 0;
7488 }
7489
7490 /*
7491 * We need to translate between nfs status return values and
7492 * the local errno values which may not be the same.
7493 */
7494 static struct {
7495 int stat;
7496 int errno;
7497 } nfs_errtbl[] = {
7498 { NFS4_OK, 0 },
7499 { NFS4ERR_PERM, -EPERM },
7500 { NFS4ERR_NOENT, -ENOENT },
7501 { NFS4ERR_IO, -errno_NFSERR_IO},
7502 { NFS4ERR_NXIO, -ENXIO },
7503 { NFS4ERR_ACCESS, -EACCES },
7504 { NFS4ERR_EXIST, -EEXIST },
7505 { NFS4ERR_XDEV, -EXDEV },
7506 { NFS4ERR_NOTDIR, -ENOTDIR },
7507 { NFS4ERR_ISDIR, -EISDIR },
7508 { NFS4ERR_INVAL, -EINVAL },
7509 { NFS4ERR_FBIG, -EFBIG },
7510 { NFS4ERR_NOSPC, -ENOSPC },
7511 { NFS4ERR_ROFS, -EROFS },
7512 { NFS4ERR_MLINK, -EMLINK },
7513 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7514 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7515 { NFS4ERR_DQUOT, -EDQUOT },
7516 { NFS4ERR_STALE, -ESTALE },
7517 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7518 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7519 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7520 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7521 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7522 { NFS4ERR_BADTYPE, -EBADTYPE },
7523 { NFS4ERR_LOCKED, -EAGAIN },
7524 { NFS4ERR_SYMLINK, -ELOOP },
7525 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7526 { NFS4ERR_DEADLOCK, -EDEADLK },
7527 { NFS4ERR_NOXATTR, -ENODATA },
7528 { NFS4ERR_XATTR2BIG, -E2BIG },
7529 { -1, -EIO }
7530 };
7531
7532 /*
7533 * Convert an NFS error code to a local one.
7534 * This one is used jointly by NFSv2 and NFSv3.
7535 */
7536 static int
7537 nfs4_stat_to_errno(int stat)
7538 {
7539 int i;
7540 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7541 if (nfs_errtbl[i].stat == stat)
7542 return nfs_errtbl[i].errno;
7543 }
7544 if (stat <= 10000 || stat > 10100) {
7545 /* The server is looney tunes. */
7546 return -EREMOTEIO;
7547 }
7548 /* If we cannot translate the error, the recovery routines should
7549 * handle it.
7550 * Note: remaining NFSv4 error codes have values > 10000, so should
7551 * not conflict with native Linux error codes.
7552 */
7553 return -stat;
7554 }
7555
7556 #ifdef CONFIG_NFS_V4_2
7557 #include "nfs42xdr.c"
7558 #endif /* CONFIG_NFS_V4_2 */
7559
7560 #define PROC(proc, argtype, restype) \
7561 [NFSPROC4_CLNT_##proc] = { \
7562 .p_proc = NFSPROC4_COMPOUND, \
7563 .p_encode = nfs4_xdr_##argtype, \
7564 .p_decode = nfs4_xdr_##restype, \
7565 .p_arglen = NFS4_##argtype##_sz, \
7566 .p_replen = NFS4_##restype##_sz, \
7567 .p_statidx = NFSPROC4_CLNT_##proc, \
7568 .p_name = #proc, \
7569 }
7570
7571 #define STUB(proc) \
7572 [NFSPROC4_CLNT_##proc] = { \
7573 .p_name = #proc, \
7574 }
7575
7576 #if defined(CONFIG_NFS_V4_1)
7577 #define PROC41(proc, argtype, restype) \
7578 PROC(proc, argtype, restype)
7579 #else
7580 #define PROC41(proc, argtype, restype) \
7581 STUB(proc)
7582 #endif
7583
7584 #if defined(CONFIG_NFS_V4_2)
7585 #define PROC42(proc, argtype, restype) \
7586 PROC(proc, argtype, restype)
7587 #else
7588 #define PROC42(proc, argtype, restype) \
7589 STUB(proc)
7590 #endif
7591
7592 const struct rpc_procinfo nfs4_procedures[] = {
7593 PROC(READ, enc_read, dec_read),
7594 PROC(WRITE, enc_write, dec_write),
7595 PROC(COMMIT, enc_commit, dec_commit),
7596 PROC(OPEN, enc_open, dec_open),
7597 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7598 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7599 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7600 PROC(CLOSE, enc_close, dec_close),
7601 PROC(SETATTR, enc_setattr, dec_setattr),
7602 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7603 PROC(RENEW, enc_renew, dec_renew),
7604 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7605 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7606 PROC(LOCK, enc_lock, dec_lock),
7607 PROC(LOCKT, enc_lockt, dec_lockt),
7608 PROC(LOCKU, enc_locku, dec_locku),
7609 PROC(ACCESS, enc_access, dec_access),
7610 PROC(GETATTR, enc_getattr, dec_getattr),
7611 PROC(LOOKUP, enc_lookup, dec_lookup),
7612 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7613 PROC(REMOVE, enc_remove, dec_remove),
7614 PROC(RENAME, enc_rename, dec_rename),
7615 PROC(LINK, enc_link, dec_link),
7616 PROC(SYMLINK, enc_symlink, dec_symlink),
7617 PROC(CREATE, enc_create, dec_create),
7618 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7619 PROC(STATFS, enc_statfs, dec_statfs),
7620 PROC(READLINK, enc_readlink, dec_readlink),
7621 PROC(READDIR, enc_readdir, dec_readdir),
7622 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7623 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7624 PROC(GETACL, enc_getacl, dec_getacl),
7625 PROC(SETACL, enc_setacl, dec_setacl),
7626 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7627 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7628 PROC(SECINFO, enc_secinfo, dec_secinfo),
7629 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7630 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7631 PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
7632 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7633 PROC41(SEQUENCE, enc_sequence, dec_sequence),
7634 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7635 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
7636 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7637 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),
7638 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7639 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7640 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7641 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7642 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7643 STUB(GETDEVICELIST),
7644 PROC41(BIND_CONN_TO_SESSION,
7645 enc_bind_conn_to_session, dec_bind_conn_to_session),
7646 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid),
7647 PROC42(SEEK, enc_seek, dec_seek),
7648 PROC42(ALLOCATE, enc_allocate, dec_allocate),
7649 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate),
7650 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7651 PROC42(CLONE, enc_clone, dec_clone),
7652 PROC42(COPY, enc_copy, dec_copy),
7653 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
7654 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify),
7655 PROC(LOOKUPP, enc_lookupp, dec_lookupp),
7656 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror),
7657 PROC42(GETXATTR, enc_getxattr, dec_getxattr),
7658 PROC42(SETXATTR, enc_setxattr, dec_setxattr),
7659 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs),
7660 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr),
7661 PROC42(READ_PLUS, enc_read_plus, dec_read_plus),
7662 };
7663
7664 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7665 const struct rpc_version nfs_version4 = {
7666 .number = 4,
7667 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7668 .procs = nfs4_procedures,
7669 .counts = nfs_version4_counts,
7670 };
7671
7672 /*
7673 * Local variables:
7674 * c-basic-offset: 8
7675 * End:
7676 */
Ubuntu Jammy Linux kernel mirror