Loading...
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
69struct compound_hdr;
70static int nfs4_stat_to_errno(int);
71static void encode_layoutget(struct xdr_stream *xdr,
72 const struct nfs4_layoutget_args *args,
73 struct compound_hdr *hdr);
74static 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
921const 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
928const 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
934const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
935 compound_decode_hdr_maxsz +
936 decode_sequence_maxsz) *
937 XDR_UNIT);
938EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
939#endif /* CONFIG_NFS_V4_1 */
940
941static 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
954struct 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
964static __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
971static 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
976static 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
981static void encode_uint32(struct xdr_stream *xdr, u32 n)
982{
983 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
984}
985
986static void encode_uint64(struct xdr_stream *xdr, u64 n)
987{
988 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
989}
990
991static 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
1005static 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
1020static 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
1029static 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
1048static 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
1057static 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
1063static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1064{
1065 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
1066}
1067
1068static 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
1073static __be32 *
1074xdr_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
1081static 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
1200static 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
1206static 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
1213static 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
1223static 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
1254static 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
1270static 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
1276static 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
1283static 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
1289static 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
1295static 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
1300static 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
1306static 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
1313static 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
1320static 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 */
1336static 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
1359static 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
1371static 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
1384static 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
1390static 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
1396static 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
1401static 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
1410static 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
1428static 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
1456static 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
1471static 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
1491static 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
1500static 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
1509static 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
1519static 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
1527static 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
1536static 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
1562static 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
1569static 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
1577static void
1578encode_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
1584static 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
1589static 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
1602static 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
1652static 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
1657static 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
1663static 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
1670static 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
1677static void
1678encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1679{
1680 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1681}
1682
1683static void
1684encode_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
1699static void
1700encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1701{
1702 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1703}
1704
1705static 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
1713static 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
1730static 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
1738static 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
1754static 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
1760static 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 */
1768static 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
1782static 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
1790static 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
1842static 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
1895static 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
1903static 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
1911static 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
1920static 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
1959static void
1960encode_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
1978static void
1979encode_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
2005static int
2006encode_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
2042static void
2043encode_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
2067static int
2068encode_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
2077static 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
2086static 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
2094static inline void
2095encode_layoutreturn(struct xdr_stream *xdr,
2096 const struct nfs4_layoutreturn_args *args,
2097 struct compound_hdr *hdr)
2098{
2099}
2100
2101static void
2102encode_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
2113static 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 */
2126static 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 */
2146static 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 */
2166static 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 */
2186static 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 */
2206static 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 */
2224static 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 */
2244static 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 */
2266static 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 */
2286static 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 */
2297static 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 */
2315static 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 */
2337static 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 */
2365static 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 */
2383static 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 */
2411static 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 */
2432static 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 */
2450static 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 */
2468static 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
2483static 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 */
2500static 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 */
2521static 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 */
2542static 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 */
2564static 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 */
2583static 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 */
2610static 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 */
2631static 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 */
2649static 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 */
2667static 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 */
2686static 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 */
2705static 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 */
2725static 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 */
2742static 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 */
2759static 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 */
2776static 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 */
2799static 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 */
2832static 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 */
2851static 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 */
2873static 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 */
2890static 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 */
2907static 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 */
2924static 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 */
2941static 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 */
2958static 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 */
2976static 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 */
2998static 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 */
3016static 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 */
3043static 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 */
3065static 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 */
3087static 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 */
3106static 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 */
3125static 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 */
3143static 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
3159static 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
3169static 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
3190static 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;
3207out_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;
3212out_bad_operation:
3213 trace_nfs4_xdr_bad_operation(xdr, opnum, expected);
3214 *nfs_retval = -EREMOTEIO;
3215 return false;
3216out_overflow:
3217 *nfs_retval = -EIO;
3218 return false;
3219}
3220
3221static 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 */
3230static 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
3242static ssize_t
3243decode_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
3255static 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
3262static 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
3274static 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
3289static 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
3313static 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
3332static 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
3353static 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
3373static 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
3391static 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
3409static 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
3433static 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
3451static 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
3467static 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
3483static 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 || len == 0) {
3499 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR,
3500 NFS4ERR_BADHANDLE);
3501 return -EREMOTEIO;
3502 }
3503 p = xdr_inline_decode(xdr, len);
3504 if (unlikely(!p))
3505 return -EIO;
3506 if (fh != NULL) {
3507 memcpy(fh->data, p, len);
3508 fh->size = len;
3509 }
3510 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3511 }
3512 return 0;
3513}
3514
3515static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3516{
3517 __be32 *p;
3518
3519 *res = 0;
3520 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3521 return -EIO;
3522 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3523 p = xdr_inline_decode(xdr, 4);
3524 if (unlikely(!p))
3525 return -EIO;
3526 *res = be32_to_cpup(p);
3527 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3528 }
3529 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3530 return 0;
3531}
3532
3533static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3534{
3535 __be32 *p;
3536 int ret = 0;
3537
3538 *fileid = 0;
3539 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3540 return -EIO;
3541 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3542 p = xdr_inline_decode(xdr, 8);
3543 if (unlikely(!p))
3544 return -EIO;
3545 xdr_decode_hyper(p, fileid);
3546 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3547 ret = NFS_ATTR_FATTR_FILEID;
3548 }
3549 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3550 return ret;
3551}
3552
3553static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3554{
3555 __be32 *p;
3556 int ret = 0;
3557
3558 *fileid = 0;
3559 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3560 return -EIO;
3561 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3562 p = xdr_inline_decode(xdr, 8);
3563 if (unlikely(!p))
3564 return -EIO;
3565 xdr_decode_hyper(p, fileid);
3566 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3567 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3568 }
3569 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3570 return ret;
3571}
3572
3573static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3574{
3575 __be32 *p;
3576 int status = 0;
3577
3578 *res = 0;
3579 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3580 return -EIO;
3581 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3582 p = xdr_inline_decode(xdr, 8);
3583 if (unlikely(!p))
3584 return -EIO;
3585 xdr_decode_hyper(p, res);
3586 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3587 }
3588 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3589 return status;
3590}
3591
3592static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3593{
3594 __be32 *p;
3595 int status = 0;
3596
3597 *res = 0;
3598 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3599 return -EIO;
3600 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3601 p = xdr_inline_decode(xdr, 8);
3602 if (unlikely(!p))
3603 return -EIO;
3604 xdr_decode_hyper(p, res);
3605 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3606 }
3607 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3608 return status;
3609}
3610
3611static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3612{
3613 __be32 *p;
3614 int status = 0;
3615
3616 *res = 0;
3617 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3618 return -EIO;
3619 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3620 p = xdr_inline_decode(xdr, 8);
3621 if (unlikely(!p))
3622 return -EIO;
3623 xdr_decode_hyper(p, res);
3624 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3625 }
3626 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3627 return status;
3628}
3629
3630static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3631{
3632 u32 n;
3633 __be32 *p;
3634 int status = 0;
3635
3636 p = xdr_inline_decode(xdr, 4);
3637 if (unlikely(!p))
3638 return -EIO;
3639 n = be32_to_cpup(p);
3640 if (n == 0)
3641 goto root_path;
3642 dprintk("pathname4: ");
3643 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3644 dprintk("cannot parse %d components in path\n", n);
3645 goto out_eio;
3646 }
3647 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3648 struct nfs4_string *component = &path->components[path->ncomponents];
3649 status = decode_opaque_inline(xdr, &component->len, &component->data);
3650 if (unlikely(status != 0))
3651 goto out_eio;
3652 ifdebug (XDR)
3653 pr_cont("%s%.*s ",
3654 (path->ncomponents != n ? "/ " : ""),
3655 component->len, component->data);
3656 }
3657out:
3658 return status;
3659root_path:
3660/* a root pathname is sent as a zero component4 */
3661 path->ncomponents = 1;
3662 path->components[0].len=0;
3663 path->components[0].data=NULL;
3664 dprintk("pathname4: /\n");
3665 goto out;
3666out_eio:
3667 dprintk(" status %d", status);
3668 status = -EIO;
3669 goto out;
3670}
3671
3672static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3673{
3674 int n;
3675 __be32 *p;
3676 int status = -EIO;
3677
3678 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3679 goto out;
3680 status = 0;
3681 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3682 goto out;
3683 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3684 status = -EIO;
3685 /* Ignore borken servers that return unrequested attrs */
3686 if (unlikely(res == NULL))
3687 goto out;
3688 dprintk("%s: fsroot:\n", __func__);
3689 status = decode_pathname(xdr, &res->fs_path);
3690 if (unlikely(status != 0))
3691 goto out;
3692 p = xdr_inline_decode(xdr, 4);
3693 if (unlikely(!p))
3694 goto out_eio;
3695 n = be32_to_cpup(p);
3696 if (n <= 0)
3697 goto out_eio;
3698 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3699 u32 m;
3700 struct nfs4_fs_location *loc;
3701
3702 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3703 break;
3704 loc = &res->locations[res->nlocations];
3705 p = xdr_inline_decode(xdr, 4);
3706 if (unlikely(!p))
3707 goto out_eio;
3708 m = be32_to_cpup(p);
3709
3710 dprintk("%s: servers:\n", __func__);
3711 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3712 struct nfs4_string *server;
3713
3714 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3715 unsigned int i;
3716 dprintk("%s: using first %u of %u servers "
3717 "returned for location %u\n",
3718 __func__,
3719 NFS4_FS_LOCATION_MAXSERVERS,
3720 m, res->nlocations);
3721 for (i = loc->nservers; i < m; i++) {
3722 unsigned int len;
3723 char *data;
3724 status = decode_opaque_inline(xdr, &len, &data);
3725 if (unlikely(status != 0))
3726 goto out_eio;
3727 }
3728 break;
3729 }
3730 server = &loc->servers[loc->nservers];
3731 status = decode_opaque_inline(xdr, &server->len, &server->data);
3732 if (unlikely(status != 0))
3733 goto out_eio;
3734 dprintk("%s ", server->data);
3735 }
3736 status = decode_pathname(xdr, &loc->rootpath);
3737 if (unlikely(status != 0))
3738 goto out_eio;
3739 }
3740 if (res->nlocations != 0)
3741 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3742out:
3743 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3744 return status;
3745out_eio:
3746 status = -EIO;
3747 goto out;
3748}
3749
3750static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3751{
3752 __be32 *p;
3753 int status = 0;
3754
3755 *res = 0;
3756 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3757 return -EIO;
3758 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3759 p = xdr_inline_decode(xdr, 8);
3760 if (unlikely(!p))
3761 return -EIO;
3762 xdr_decode_hyper(p, res);
3763 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3764 }
3765 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3766 return status;
3767}
3768
3769static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3770{
3771 __be32 *p;
3772 int status = 0;
3773
3774 *maxlink = 1;
3775 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3776 return -EIO;
3777 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3778 p = xdr_inline_decode(xdr, 4);
3779 if (unlikely(!p))
3780 return -EIO;
3781 *maxlink = be32_to_cpup(p);
3782 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3783 }
3784 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3785 return status;
3786}
3787
3788static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3789{
3790 __be32 *p;
3791 int status = 0;
3792
3793 *maxname = 1024;
3794 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3795 return -EIO;
3796 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3797 p = xdr_inline_decode(xdr, 4);
3798 if (unlikely(!p))
3799 return -EIO;
3800 *maxname = be32_to_cpup(p);
3801 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3802 }
3803 dprintk("%s: maxname=%u\n", __func__, *maxname);
3804 return status;
3805}
3806
3807static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3808{
3809 __be32 *p;
3810 int status = 0;
3811
3812 *res = 1024;
3813 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3814 return -EIO;
3815 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3816 uint64_t maxread;
3817 p = xdr_inline_decode(xdr, 8);
3818 if (unlikely(!p))
3819 return -EIO;
3820 xdr_decode_hyper(p, &maxread);
3821 if (maxread > 0x7FFFFFFF)
3822 maxread = 0x7FFFFFFF;
3823 *res = (uint32_t)maxread;
3824 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3825 }
3826 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3827 return status;
3828}
3829
3830static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3831{
3832 __be32 *p;
3833 int status = 0;
3834
3835 *res = 1024;
3836 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3837 return -EIO;
3838 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3839 uint64_t maxwrite;
3840 p = xdr_inline_decode(xdr, 8);
3841 if (unlikely(!p))
3842 return -EIO;
3843 xdr_decode_hyper(p, &maxwrite);
3844 if (maxwrite > 0x7FFFFFFF)
3845 maxwrite = 0x7FFFFFFF;
3846 *res = (uint32_t)maxwrite;
3847 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3848 }
3849 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3850 return status;
3851}
3852
3853static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3854{
3855 uint32_t tmp;
3856 __be32 *p;
3857 int ret = 0;
3858
3859 *mode = 0;
3860 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3861 return -EIO;
3862 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3863 p = xdr_inline_decode(xdr, 4);
3864 if (unlikely(!p))
3865 return -EIO;
3866 tmp = be32_to_cpup(p);
3867 *mode = tmp & ~S_IFMT;
3868 bitmap[1] &= ~FATTR4_WORD1_MODE;
3869 ret = NFS_ATTR_FATTR_MODE;
3870 }
3871 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3872 return ret;
3873}
3874
3875static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3876{
3877 __be32 *p;
3878 int ret = 0;
3879
3880 *nlink = 1;
3881 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3882 return -EIO;
3883 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3884 p = xdr_inline_decode(xdr, 4);
3885 if (unlikely(!p))
3886 return -EIO;
3887 *nlink = be32_to_cpup(p);
3888 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3889 ret = NFS_ATTR_FATTR_NLINK;
3890 }
3891 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3892 return ret;
3893}
3894
3895static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3896 struct nfs4_string *name, gfp_t gfp_flags)
3897{
3898 ssize_t ret;
3899
3900 ret = xdr_stream_decode_string_dup(xdr, &name->data,
3901 XDR_MAX_NETOBJ, gfp_flags);
3902 name->len = 0;
3903 if (ret > 0)
3904 name->len = ret;
3905 return ret;
3906}
3907
3908static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3909 const struct nfs_server *server, kuid_t *uid,
3910 struct nfs4_string *owner_name)
3911{
3912 ssize_t len;
3913 char *p;
3914
3915 *uid = make_kuid(&init_user_ns, -2);
3916 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3917 return -EIO;
3918 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
3919 return 0;
3920 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3921
3922 if (owner_name != NULL) {
3923 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO);
3924 if (len <= 0)
3925 goto out;
3926 dprintk("%s: name=%s\n", __func__, owner_name->data);
3927 return NFS_ATTR_FATTR_OWNER_NAME;
3928 } else {
3929 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3930 XDR_MAX_NETOBJ);
3931 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
3932 goto out;
3933 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3934 return NFS_ATTR_FATTR_OWNER;
3935 }
3936out:
3937 if (len == -EBADMSG)
3938 return -EIO;
3939 return 0;
3940}
3941
3942static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3943 const struct nfs_server *server, kgid_t *gid,
3944 struct nfs4_string *group_name)
3945{
3946 ssize_t len;
3947 char *p;
3948
3949 *gid = make_kgid(&init_user_ns, -2);
3950 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3951 return -EIO;
3952 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
3953 return 0;
3954 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3955
3956 if (group_name != NULL) {
3957 len = decode_nfs4_string(xdr, group_name, GFP_NOIO);
3958 if (len <= 0)
3959 goto out;
3960 dprintk("%s: name=%s\n", __func__, group_name->data);
3961 return NFS_ATTR_FATTR_GROUP_NAME;
3962 } else {
3963 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3964 XDR_MAX_NETOBJ);
3965 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
3966 goto out;
3967 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3968 return NFS_ATTR_FATTR_GROUP;
3969 }
3970out:
3971 if (len == -EBADMSG)
3972 return -EIO;
3973 return 0;
3974}
3975
3976static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3977{
3978 uint32_t major = 0, minor = 0;
3979 __be32 *p;
3980 int ret = 0;
3981
3982 *rdev = MKDEV(0,0);
3983 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3984 return -EIO;
3985 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3986 dev_t tmp;
3987
3988 p = xdr_inline_decode(xdr, 8);
3989 if (unlikely(!p))
3990 return -EIO;
3991 major = be32_to_cpup(p++);
3992 minor = be32_to_cpup(p);
3993 tmp = MKDEV(major, minor);
3994 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3995 *rdev = tmp;
3996 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3997 ret = NFS_ATTR_FATTR_RDEV;
3998 }
3999 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4000 return ret;
4001}
4002
4003static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4004{
4005 __be32 *p;
4006 int status = 0;
4007
4008 *res = 0;
4009 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4010 return -EIO;
4011 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4012 p = xdr_inline_decode(xdr, 8);
4013 if (unlikely(!p))
4014 return -EIO;
4015 xdr_decode_hyper(p, res);
4016 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4017 }
4018 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4019 return status;
4020}
4021
4022static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4023{
4024 __be32 *p;
4025 int status = 0;
4026
4027 *res = 0;
4028 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4029 return -EIO;
4030 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4031 p = xdr_inline_decode(xdr, 8);
4032 if (unlikely(!p))
4033 return -EIO;
4034 xdr_decode_hyper(p, res);
4035 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4036 }
4037 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4038 return status;
4039}
4040
4041static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4042{
4043 __be32 *p;
4044 int status = 0;
4045
4046 *res = 0;
4047 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4048 return -EIO;
4049 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4050 p = xdr_inline_decode(xdr, 8);
4051 if (unlikely(!p))
4052 return -EIO;
4053 xdr_decode_hyper(p, res);
4054 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4055 }
4056 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4057 return status;
4058}
4059
4060static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4061{
4062 __be32 *p;
4063 int ret = 0;
4064
4065 *used = 0;
4066 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4067 return -EIO;
4068 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4069 p = xdr_inline_decode(xdr, 8);
4070 if (unlikely(!p))
4071 return -EIO;
4072 xdr_decode_hyper(p, used);
4073 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4074 ret = NFS_ATTR_FATTR_SPACE_USED;
4075 }
4076 dprintk("%s: space used=%Lu\n", __func__,
4077 (unsigned long long)*used);
4078 return ret;
4079}
4080
4081static __be32 *
4082xdr_decode_nfstime4(__be32 *p, struct timespec64 *t)
4083{
4084 __u64 sec;
4085
4086 p = xdr_decode_hyper(p, &sec);
4087 t-> tv_sec = sec;
4088 t->tv_nsec = be32_to_cpup(p++);
4089 return p;
4090}
4091
4092static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time)
4093{
4094 __be32 *p;
4095
4096 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2);
4097 if (unlikely(!p))
4098 return -EIO;
4099 xdr_decode_nfstime4(p, time);
4100 return 0;
4101}
4102
4103static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4104{
4105 int status = 0;
4106
4107 time->tv_sec = 0;
4108 time->tv_nsec = 0;
4109 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4110 return -EIO;
4111 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4112 status = decode_attr_time(xdr, time);
4113 if (status == 0)
4114 status = NFS_ATTR_FATTR_ATIME;
4115 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4116 }
4117 dprintk("%s: atime=%lld\n", __func__, time->tv_sec);
4118 return status;
4119}
4120
4121static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4122{
4123 int status = 0;
4124
4125 time->tv_sec = 0;
4126 time->tv_nsec = 0;
4127 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4128 return -EIO;
4129 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4130 status = decode_attr_time(xdr, time);
4131 if (status == 0)
4132 status = NFS_ATTR_FATTR_CTIME;
4133 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4134 }
4135 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec);
4136 return status;
4137}
4138
4139static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4140 struct timespec64 *time)
4141{
4142 int status = 0;
4143
4144 time->tv_sec = 0;
4145 time->tv_nsec = 0;
4146 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4147 return -EIO;
4148 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4149 status = decode_attr_time(xdr, time);
4150 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4151 }
4152 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec,
4153 time->tv_nsec);
4154 return status;
4155}
4156
4157static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4158 struct nfs4_label *label)
4159{
4160 uint32_t pi = 0;
4161 uint32_t lfs = 0;
4162 __u32 len;
4163 __be32 *p;
4164 int status = 0;
4165
4166 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4167 return -EIO;
4168 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4169 p = xdr_inline_decode(xdr, 4);
4170 if (unlikely(!p))
4171 return -EIO;
4172 lfs = be32_to_cpup(p++);
4173 p = xdr_inline_decode(xdr, 4);
4174 if (unlikely(!p))
4175 return -EIO;
4176 pi = be32_to_cpup(p++);
4177 p = xdr_inline_decode(xdr, 4);
4178 if (unlikely(!p))
4179 return -EIO;
4180 len = be32_to_cpup(p++);
4181 p = xdr_inline_decode(xdr, len);
4182 if (unlikely(!p))
4183 return -EIO;
4184 if (len < NFS4_MAXLABELLEN) {
4185 if (label) {
4186 if (label->len) {
4187 if (label->len < len)
4188 return -ERANGE;
4189 memcpy(label->label, p, len);
4190 }
4191 label->len = len;
4192 label->pi = pi;
4193 label->lfs = lfs;
4194 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4195 }
4196 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4197 } else
4198 printk(KERN_WARNING "%s: label too long (%u)!\n",
4199 __func__, len);
4200 }
4201 if (label && label->label)
4202 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4203 (char *)label->label, label->len, label->pi, label->lfs);
4204 return status;
4205}
4206
4207static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4208{
4209 int status = 0;
4210
4211 time->tv_sec = 0;
4212 time->tv_nsec = 0;
4213 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4214 return -EIO;
4215 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4216 status = decode_attr_time(xdr, time);
4217 if (status == 0)
4218 status = NFS_ATTR_FATTR_MTIME;
4219 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4220 }
4221 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec);
4222 return status;
4223}
4224
4225static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
4226 uint32_t *res)
4227{
4228 __be32 *p;
4229
4230 *res = 0;
4231 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U)))
4232 return -EIO;
4233 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) {
4234 p = xdr_inline_decode(xdr, 4);
4235 if (unlikely(!p))
4236 return -EIO;
4237 *res = be32_to_cpup(p);
4238 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
4239 }
4240 dprintk("%s: XATTR support=%s\n", __func__,
4241 *res == 0 ? "false" : "true");
4242 return 0;
4243}
4244
4245static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4246{
4247 unsigned int attrwords = XDR_QUADLEN(attrlen);
4248 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4249
4250 if (unlikely(attrwords != nwords)) {
4251 dprintk("%s: server returned incorrect attribute length: "
4252 "%u %c %u\n",
4253 __func__,
4254 attrwords << 2,
4255 (attrwords < nwords) ? '<' : '>',
4256 nwords << 2);
4257 return -EIO;
4258 }
4259 return 0;
4260}
4261
4262static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4263{
4264 __be32 *p;
4265
4266 p = xdr_inline_decode(xdr, 20);
4267 if (unlikely(!p))
4268 return -EIO;
4269 cinfo->atomic = be32_to_cpup(p++);
4270 p = xdr_decode_hyper(p, &cinfo->before);
4271 xdr_decode_hyper(p, &cinfo->after);
4272 return 0;
4273}
4274
4275static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4276{
4277 __be32 *p;
4278 uint32_t supp, acc;
4279 int status;
4280
4281 status = decode_op_hdr(xdr, OP_ACCESS);
4282 if (status)
4283 return status;
4284 p = xdr_inline_decode(xdr, 8);
4285 if (unlikely(!p))
4286 return -EIO;
4287 supp = be32_to_cpup(p++);
4288 acc = be32_to_cpup(p);
4289 *supported = supp;
4290 *access = acc;
4291 return 0;
4292}
4293
4294static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4295{
4296 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
4297 if (unlikely(ret < 0))
4298 return -EIO;
4299 return 0;
4300}
4301
4302static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4303{
4304 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4305}
4306
4307static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4308{
4309 stateid->type = NFS4_OPEN_STATEID_TYPE;
4310 return decode_stateid(xdr, stateid);
4311}
4312
4313static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4314{
4315 stateid->type = NFS4_LOCK_STATEID_TYPE;
4316 return decode_stateid(xdr, stateid);
4317}
4318
4319static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4320{
4321 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4322 return decode_stateid(xdr, stateid);
4323}
4324
4325static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4326{
4327 nfs4_stateid dummy;
4328
4329 nfs4_stateid_copy(stateid, &invalid_stateid);
4330 return decode_stateid(xdr, &dummy);
4331}
4332
4333static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4334{
4335 int status;
4336
4337 status = decode_op_hdr(xdr, OP_CLOSE);
4338 if (status != -EIO)
4339 nfs_increment_open_seqid(status, res->seqid);
4340 if (!status)
4341 status = decode_invalid_stateid(xdr, &res->stateid);
4342 return status;
4343}
4344
4345static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4346{
4347 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4348}
4349
4350static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4351{
4352 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4353}
4354
4355static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4356{
4357 struct nfs_writeverf *verf = res->verf;
4358 int status;
4359
4360 status = decode_op_hdr(xdr, OP_COMMIT);
4361 if (!status)
4362 status = decode_write_verifier(xdr, &verf->verifier);
4363 if (!status)
4364 verf->committed = NFS_FILE_SYNC;
4365 return status;
4366}
4367
4368static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4369{
4370 __be32 *p;
4371 uint32_t bmlen;
4372 int status;
4373
4374 status = decode_op_hdr(xdr, OP_CREATE);
4375 if (status)
4376 return status;
4377 if ((status = decode_change_info(xdr, cinfo)))
4378 return status;
4379 p = xdr_inline_decode(xdr, 4);
4380 if (unlikely(!p))
4381 return -EIO;
4382 bmlen = be32_to_cpup(p);
4383 p = xdr_inline_decode(xdr, bmlen << 2);
4384 if (likely(p))
4385 return 0;
4386 return -EIO;
4387}
4388
4389static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4390{
4391 unsigned int savep;
4392 uint32_t attrlen, bitmap[3] = {0};
4393 int status;
4394
4395 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4396 goto xdr_error;
4397 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4398 goto xdr_error;
4399 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4400 goto xdr_error;
4401 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4402 goto xdr_error;
4403 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4404 &res->fh_expire_type)) != 0)
4405 goto xdr_error;
4406 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4407 goto xdr_error;
4408 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4409 goto xdr_error;
4410 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4411 goto xdr_error;
4412 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4413 res->exclcreat_bitmask)) != 0)
4414 goto xdr_error;
4415 status = verify_attr_len(xdr, savep, attrlen);
4416xdr_error:
4417 dprintk("%s: xdr returned %d!\n", __func__, -status);
4418 return status;
4419}
4420
4421static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4422{
4423 unsigned int savep;
4424 uint32_t attrlen, bitmap[3] = {0};
4425 int status;
4426
4427 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4428 goto xdr_error;
4429 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4430 goto xdr_error;
4431 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4432 goto xdr_error;
4433
4434 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4435 goto xdr_error;
4436 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4437 goto xdr_error;
4438 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4439 goto xdr_error;
4440
4441 status = -EIO;
4442 if (unlikely(bitmap[0]))
4443 goto xdr_error;
4444
4445 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4446 goto xdr_error;
4447 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4448 goto xdr_error;
4449 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4450 goto xdr_error;
4451
4452 status = verify_attr_len(xdr, savep, attrlen);
4453xdr_error:
4454 dprintk("%s: xdr returned %d!\n", __func__, -status);
4455 return status;
4456}
4457
4458static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4459{
4460 unsigned int savep;
4461 uint32_t attrlen, bitmap[3] = {0};
4462 int status;
4463
4464 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4465 goto xdr_error;
4466 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4467 goto xdr_error;
4468 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4469 goto xdr_error;
4470
4471 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4472 goto xdr_error;
4473 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4474 goto xdr_error;
4475
4476 status = verify_attr_len(xdr, savep, attrlen);
4477xdr_error:
4478 dprintk("%s: xdr returned %d!\n", __func__, -status);
4479 return status;
4480}
4481
4482static int decode_threshold_hint(struct xdr_stream *xdr,
4483 uint32_t *bitmap,
4484 uint64_t *res,
4485 uint32_t hint_bit)
4486{
4487 __be32 *p;
4488
4489 *res = 0;
4490 if (likely(bitmap[0] & hint_bit)) {
4491 p = xdr_inline_decode(xdr, 8);
4492 if (unlikely(!p))
4493 return -EIO;
4494 xdr_decode_hyper(p, res);
4495 }
4496 return 0;
4497}
4498
4499static int decode_first_threshold_item4(struct xdr_stream *xdr,
4500 struct nfs4_threshold *res)
4501{
4502 __be32 *p;
4503 unsigned int savep;
4504 uint32_t bitmap[3] = {0,}, attrlen;
4505 int status;
4506
4507 /* layout type */
4508 p = xdr_inline_decode(xdr, 4);
4509 if (unlikely(!p))
4510 return -EIO;
4511 res->l_type = be32_to_cpup(p);
4512
4513 /* thi_hintset bitmap */
4514 status = decode_attr_bitmap(xdr, bitmap);
4515 if (status < 0)
4516 goto xdr_error;
4517
4518 /* thi_hintlist length */
4519 status = decode_attr_length(xdr, &attrlen, &savep);
4520 if (status < 0)
4521 goto xdr_error;
4522 /* thi_hintlist */
4523 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4524 if (status < 0)
4525 goto xdr_error;
4526 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4527 if (status < 0)
4528 goto xdr_error;
4529 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4530 THRESHOLD_RD_IO);
4531 if (status < 0)
4532 goto xdr_error;
4533 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4534 THRESHOLD_WR_IO);
4535 if (status < 0)
4536 goto xdr_error;
4537
4538 status = verify_attr_len(xdr, savep, attrlen);
4539 res->bm = bitmap[0];
4540
4541 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4542 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4543 res->wr_io_sz);
4544xdr_error:
4545 dprintk("%s ret=%d!\n", __func__, status);
4546 return status;
4547}
4548
4549/*
4550 * Thresholds on pNFS direct I/O vrs MDS I/O
4551 */
4552static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4553 uint32_t *bitmap,
4554 struct nfs4_threshold *res)
4555{
4556 __be32 *p;
4557 int status = 0;
4558 uint32_t num;
4559
4560 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4561 return -EIO;
4562 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4563 /* Did the server return an unrequested attribute? */
4564 if (unlikely(res == NULL))
4565 return -EREMOTEIO;
4566 p = xdr_inline_decode(xdr, 4);
4567 if (unlikely(!p))
4568 return -EIO;
4569 num = be32_to_cpup(p);
4570 if (num == 0)
4571 return 0;
4572 if (num > 1)
4573 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4574 "drivers per filesystem not supported\n",
4575 __func__);
4576
4577 status = decode_first_threshold_item4(xdr, res);
4578 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4579 }
4580 return status;
4581}
4582
4583static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4584 struct nfs_fattr *fattr, struct nfs_fh *fh,
4585 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4586 const struct nfs_server *server)
4587{
4588 int status;
4589 umode_t fmode = 0;
4590 uint32_t type;
4591 int32_t err;
4592
4593 status = decode_attr_type(xdr, bitmap, &type);
4594 if (status < 0)
4595 goto xdr_error;
4596 fattr->mode = 0;
4597 if (status != 0) {
4598 fattr->mode |= nfs_type2fmt[type];
4599 fattr->valid |= status;
4600 }
4601
4602 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4603 if (status < 0)
4604 goto xdr_error;
4605 fattr->valid |= status;
4606
4607 status = decode_attr_size(xdr, bitmap, &fattr->size);
4608 if (status < 0)
4609 goto xdr_error;
4610 fattr->valid |= status;
4611
4612 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4613 if (status < 0)
4614 goto xdr_error;
4615 fattr->valid |= status;
4616
4617 err = 0;
4618 status = decode_attr_error(xdr, bitmap, &err);
4619 if (status < 0)
4620 goto xdr_error;
4621
4622 status = decode_attr_filehandle(xdr, bitmap, fh);
4623 if (status < 0)
4624 goto xdr_error;
4625
4626 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4627 if (status < 0)
4628 goto xdr_error;
4629 fattr->valid |= status;
4630
4631 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4632 if (status < 0)
4633 goto xdr_error;
4634 fattr->valid |= status;
4635
4636 status = -EIO;
4637 if (unlikely(bitmap[0]))
4638 goto xdr_error;
4639
4640 status = decode_attr_mode(xdr, bitmap, &fmode);
4641 if (status < 0)
4642 goto xdr_error;
4643 if (status != 0) {
4644 fattr->mode |= fmode;
4645 fattr->valid |= status;
4646 }
4647
4648 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4649 if (status < 0)
4650 goto xdr_error;
4651 fattr->valid |= status;
4652
4653 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4654 if (status < 0)
4655 goto xdr_error;
4656 fattr->valid |= status;
4657
4658 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4659 if (status < 0)
4660 goto xdr_error;
4661 fattr->valid |= status;
4662
4663 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4664 if (status < 0)
4665 goto xdr_error;
4666 fattr->valid |= status;
4667
4668 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4669 if (status < 0)
4670 goto xdr_error;
4671 fattr->valid |= status;
4672
4673 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4674 if (status < 0)
4675 goto xdr_error;
4676 fattr->valid |= status;
4677
4678 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4679 if (status < 0)
4680 goto xdr_error;
4681 fattr->valid |= status;
4682
4683 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4684 if (status < 0)
4685 goto xdr_error;
4686 fattr->valid |= status;
4687
4688 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4689 if (status < 0)
4690 goto xdr_error;
4691 fattr->valid |= status;
4692
4693 status = -EIO;
4694 if (unlikely(bitmap[1]))
4695 goto xdr_error;
4696
4697 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4698 if (status < 0)
4699 goto xdr_error;
4700
4701 if (label) {
4702 status = decode_attr_security_label(xdr, bitmap, label);
4703 if (status < 0)
4704 goto xdr_error;
4705 fattr->valid |= status;
4706 }
4707
4708xdr_error:
4709 dprintk("%s: xdr returned %d\n", __func__, -status);
4710 return status;
4711}
4712
4713static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4714 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4715 struct nfs4_label *label, const struct nfs_server *server)
4716{
4717 unsigned int savep;
4718 uint32_t attrlen,
4719 bitmap[3] = {0};
4720 int status;
4721
4722 status = decode_op_hdr(xdr, OP_GETATTR);
4723 if (status < 0)
4724 goto xdr_error;
4725
4726 status = decode_attr_bitmap(xdr, bitmap);
4727 if (status < 0)
4728 goto xdr_error;
4729
4730 status = decode_attr_length(xdr, &attrlen, &savep);
4731 if (status < 0)
4732 goto xdr_error;
4733
4734 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4735 label, server);
4736 if (status < 0)
4737 goto xdr_error;
4738
4739 status = verify_attr_len(xdr, savep, attrlen);
4740xdr_error:
4741 dprintk("%s: xdr returned %d\n", __func__, -status);
4742 return status;
4743}
4744
4745static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4746 struct nfs4_label *label, const struct nfs_server *server)
4747{
4748 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4749}
4750
4751static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4752 const struct nfs_server *server)
4753{
4754 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4755}
4756
4757/*
4758 * Decode potentially multiple layout types.
4759 */
4760static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4761 struct nfs_fsinfo *fsinfo)
4762{
4763 __be32 *p;
4764 uint32_t i;
4765
4766 p = xdr_inline_decode(xdr, 4);
4767 if (unlikely(!p))
4768 return -EIO;
4769 fsinfo->nlayouttypes = be32_to_cpup(p);
4770
4771 /* pNFS is not supported by the underlying file system */
4772 if (fsinfo->nlayouttypes == 0)
4773 return 0;
4774
4775 /* Decode and set first layout type, move xdr->p past unused types */
4776 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4777 if (unlikely(!p))
4778 return -EIO;
4779
4780 /* If we get too many, then just cap it at the max */
4781 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4782 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4783 __func__, fsinfo->nlayouttypes);
4784 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4785 }
4786
4787 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4788 fsinfo->layouttype[i] = be32_to_cpup(p++);
4789 return 0;
4790}
4791
4792/*
4793 * The type of file system exported.
4794 * Note we must ensure that layouttype is set in any non-error case.
4795 */
4796static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4797 struct nfs_fsinfo *fsinfo)
4798{
4799 int status = 0;
4800
4801 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4802 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4803 return -EIO;
4804 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4805 status = decode_pnfs_layout_types(xdr, fsinfo);
4806 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4807 }
4808 return status;
4809}
4810
4811/*
4812 * The prefered block size for layout directed io
4813 */
4814static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4815 uint32_t *res)
4816{
4817 __be32 *p;
4818
4819 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4820 *res = 0;
4821 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4822 p = xdr_inline_decode(xdr, 4);
4823 if (unlikely(!p))
4824 return -EIO;
4825 *res = be32_to_cpup(p);
4826 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4827 }
4828 return 0;
4829}
4830
4831/*
4832 * The granularity of a CLONE operation.
4833 */
4834static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4835 uint32_t *res)
4836{
4837 __be32 *p;
4838
4839 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4840 *res = 0;
4841 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4842 p = xdr_inline_decode(xdr, 4);
4843 if (unlikely(!p))
4844 return -EIO;
4845 *res = be32_to_cpup(p);
4846 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4847 }
4848 return 0;
4849}
4850
4851static int decode_attr_change_attr_type(struct xdr_stream *xdr,
4852 uint32_t *bitmap,
4853 enum nfs4_change_attr_type *res)
4854{
4855 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4856
4857 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4858 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) {
4859 if (xdr_stream_decode_u32(xdr, &tmp))
4860 return -EIO;
4861 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE;
4862 }
4863
4864 switch(tmp) {
4865 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR:
4866 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER:
4867 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS:
4868 case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
4869 *res = tmp;
4870 break;
4871 default:
4872 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4873 }
4874 return 0;
4875}
4876
4877static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4878{
4879 unsigned int savep;
4880 uint32_t attrlen, bitmap[3];
4881 int status;
4882
4883 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4884 goto xdr_error;
4885 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4886 goto xdr_error;
4887 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4888 goto xdr_error;
4889
4890 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4891
4892 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4893 goto xdr_error;
4894 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4895 goto xdr_error;
4896 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4897 goto xdr_error;
4898 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4899 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4900 goto xdr_error;
4901 fsinfo->wtpref = fsinfo->wtmax;
4902
4903 status = -EIO;
4904 if (unlikely(bitmap[0]))
4905 goto xdr_error;
4906
4907 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4908 if (status != 0)
4909 goto xdr_error;
4910 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4911 if (status != 0)
4912 goto xdr_error;
4913
4914 status = -EIO;
4915 if (unlikely(bitmap[1]))
4916 goto xdr_error;
4917
4918 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4919 if (status)
4920 goto xdr_error;
4921 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4922 if (status)
4923 goto xdr_error;
4924
4925 status = decode_attr_change_attr_type(xdr, bitmap,
4926 &fsinfo->change_attr_type);
4927 if (status)
4928 goto xdr_error;
4929
4930 status = decode_attr_xattrsupport(xdr, bitmap,
4931 &fsinfo->xattr_support);
4932 if (status)
4933 goto xdr_error;
4934
4935 status = verify_attr_len(xdr, savep, attrlen);
4936xdr_error:
4937 dprintk("%s: xdr returned %d!\n", __func__, -status);
4938 return status;
4939}
4940
4941static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4942{
4943 __be32 *p;
4944 uint32_t len;
4945 int status;
4946
4947 /* Zero handle first to allow comparisons */
4948 memset(fh, 0, sizeof(*fh));
4949
4950 status = decode_op_hdr(xdr, OP_GETFH);
4951 if (status)
4952 return status;
4953
4954 p = xdr_inline_decode(xdr, 4);
4955 if (unlikely(!p))
4956 return -EIO;
4957 len = be32_to_cpup(p);
4958 if (len > NFS4_FHSIZE || len == 0) {
4959 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE);
4960 return -EREMOTEIO;
4961 }
4962 fh->size = len;
4963 p = xdr_inline_decode(xdr, len);
4964 if (unlikely(!p))
4965 return -EIO;
4966 memcpy(fh->data, p, len);
4967 return 0;
4968}
4969
4970static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4971{
4972 int status;
4973
4974 status = decode_op_hdr(xdr, OP_LINK);
4975 if (status)
4976 return status;
4977 return decode_change_info(xdr, cinfo);
4978}
4979
4980/*
4981 * We create the owner, so we know a proper owner.id length is 4.
4982 */
4983static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4984{
4985 uint64_t offset, length, clientid;
4986 __be32 *p;
4987 uint32_t namelen, type;
4988
4989 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4990 if (unlikely(!p))
4991 return -EIO;
4992 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4993 p = xdr_decode_hyper(p, &length);
4994 type = be32_to_cpup(p++); /* 4 byte read */
4995 if (fl != NULL) { /* manipulate file lock */
4996 fl->fl_start = (loff_t)offset;
4997 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4998 if (length == ~(uint64_t)0)
4999 fl->fl_end = OFFSET_MAX;
5000 fl->fl_type = F_WRLCK;
5001 if (type & 1)
5002 fl->fl_type = F_RDLCK;
5003 fl->fl_pid = 0;
5004 }
5005 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
5006 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5007 p = xdr_inline_decode(xdr, namelen); /* variable size field */
5008 if (likely(!p))
5009 return -EIO;
5010 return -NFS4ERR_DENIED;
5011}
5012
5013static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5014{
5015 int status;
5016
5017 status = decode_op_hdr(xdr, OP_LOCK);
5018 if (status == -EIO)
5019 goto out;
5020 if (status == 0) {
5021 status = decode_lock_stateid(xdr, &res->stateid);
5022 if (unlikely(status))
5023 goto out;
5024 } else if (status == -NFS4ERR_DENIED)
5025 status = decode_lock_denied(xdr, NULL);
5026 if (res->open_seqid != NULL)
5027 nfs_increment_open_seqid(status, res->open_seqid);
5028 nfs_increment_lock_seqid(status, res->lock_seqid);
5029out:
5030 return status;
5031}
5032
5033static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5034{
5035 int status;
5036 status = decode_op_hdr(xdr, OP_LOCKT);
5037 if (status == -NFS4ERR_DENIED)
5038 return decode_lock_denied(xdr, res->denied);
5039 return status;
5040}
5041
5042static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5043{
5044 int status;
5045
5046 status = decode_op_hdr(xdr, OP_LOCKU);
5047 if (status != -EIO)
5048 nfs_increment_lock_seqid(status, res->seqid);
5049 if (status == 0)
5050 status = decode_lock_stateid(xdr, &res->stateid);
5051 return status;
5052}
5053
5054static int decode_release_lockowner(struct xdr_stream *xdr)
5055{
5056 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5057}
5058
5059static int decode_lookup(struct xdr_stream *xdr)
5060{
5061 return decode_op_hdr(xdr, OP_LOOKUP);
5062}
5063
5064static int decode_lookupp(struct xdr_stream *xdr)
5065{
5066 return decode_op_hdr(xdr, OP_LOOKUPP);
5067}
5068
5069/* This is too sick! */
5070static int decode_space_limit(struct xdr_stream *xdr,
5071 unsigned long *pagemod_limit)
5072{
5073 __be32 *p;
5074 uint32_t limit_type, nblocks, blocksize;
5075 u64 maxsize = 0;
5076
5077 p = xdr_inline_decode(xdr, 12);
5078 if (unlikely(!p))
5079 return -EIO;
5080 limit_type = be32_to_cpup(p++);
5081 switch (limit_type) {
5082 case NFS4_LIMIT_SIZE:
5083 xdr_decode_hyper(p, &maxsize);
5084 break;
5085 case NFS4_LIMIT_BLOCKS:
5086 nblocks = be32_to_cpup(p++);
5087 blocksize = be32_to_cpup(p);
5088 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5089 }
5090 maxsize >>= PAGE_SHIFT;
5091 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5092 return 0;
5093}
5094
5095static int decode_rw_delegation(struct xdr_stream *xdr,
5096 uint32_t delegation_type,
5097 struct nfs_openres *res)
5098{
5099 __be32 *p;
5100 int status;
5101
5102 status = decode_delegation_stateid(xdr, &res->delegation);
5103 if (unlikely(status))
5104 return status;
5105 p = xdr_inline_decode(xdr, 4);
5106 if (unlikely(!p))
5107 return -EIO;
5108 res->do_recall = be32_to_cpup(p);
5109
5110 switch (delegation_type) {
5111 case NFS4_OPEN_DELEGATE_READ:
5112 res->delegation_type = FMODE_READ;
5113 break;
5114 case NFS4_OPEN_DELEGATE_WRITE:
5115 res->delegation_type = FMODE_WRITE|FMODE_READ;
5116 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5117 return -EIO;
5118 }
5119 return decode_ace(xdr, NULL);
5120}
5121
5122static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5123{
5124 __be32 *p;
5125 uint32_t why_no_delegation;
5126
5127 p = xdr_inline_decode(xdr, 4);
5128 if (unlikely(!p))
5129 return -EIO;
5130 why_no_delegation = be32_to_cpup(p);
5131 switch (why_no_delegation) {
5132 case WND4_CONTENTION:
5133 case WND4_RESOURCE:
5134 xdr_inline_decode(xdr, 4);
5135 /* Ignore for now */
5136 }
5137 return 0;
5138}
5139
5140static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5141{
5142 __be32 *p;
5143 uint32_t delegation_type;
5144
5145 p = xdr_inline_decode(xdr, 4);
5146 if (unlikely(!p))
5147 return -EIO;
5148 delegation_type = be32_to_cpup(p);
5149 res->delegation_type = 0;
5150 switch (delegation_type) {
5151 case NFS4_OPEN_DELEGATE_NONE:
5152 return 0;
5153 case NFS4_OPEN_DELEGATE_READ:
5154 case NFS4_OPEN_DELEGATE_WRITE:
5155 return decode_rw_delegation(xdr, delegation_type, res);
5156 case NFS4_OPEN_DELEGATE_NONE_EXT:
5157 return decode_no_delegation(xdr, res);
5158 }
5159 return -EIO;
5160}
5161
5162static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5163{
5164 __be32 *p;
5165 uint32_t savewords, bmlen, i;
5166 int status;
5167
5168 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5169 return status;
5170 nfs_increment_open_seqid(status, res->seqid);
5171 if (status)
5172 return status;
5173 status = decode_open_stateid(xdr, &res->stateid);
5174 if (unlikely(status))
5175 return status;
5176
5177 decode_change_info(xdr, &res->cinfo);
5178
5179 p = xdr_inline_decode(xdr, 8);
5180 if (unlikely(!p))
5181 return -EIO;
5182 res->rflags = be32_to_cpup(p++);
5183 bmlen = be32_to_cpup(p);
5184 if (bmlen > 10)
5185 goto xdr_error;
5186
5187 p = xdr_inline_decode(xdr, bmlen << 2);
5188 if (unlikely(!p))
5189 return -EIO;
5190 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5191 for (i = 0; i < savewords; ++i)
5192 res->attrset[i] = be32_to_cpup(p++);
5193 for (; i < NFS4_BITMAP_SIZE; i++)
5194 res->attrset[i] = 0;
5195
5196 return decode_delegation(xdr, res);
5197xdr_error:
5198 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5199 return -EIO;
5200}
5201
5202static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5203{
5204 int status;
5205
5206 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5207 if (status != -EIO)
5208 nfs_increment_open_seqid(status, res->seqid);
5209 if (!status)
5210 status = decode_open_stateid(xdr, &res->stateid);
5211 return status;
5212}
5213
5214static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5215{
5216 int status;
5217
5218 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5219 if (status != -EIO)
5220 nfs_increment_open_seqid(status, res->seqid);
5221 if (!status)
5222 status = decode_open_stateid(xdr, &res->stateid);
5223 return status;
5224}
5225
5226static int decode_putfh(struct xdr_stream *xdr)
5227{
5228 return decode_op_hdr(xdr, OP_PUTFH);
5229}
5230
5231static int decode_putrootfh(struct xdr_stream *xdr)
5232{
5233 return decode_op_hdr(xdr, OP_PUTROOTFH);
5234}
5235
5236static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5237 struct nfs_pgio_res *res)
5238{
5239 __be32 *p;
5240 uint32_t count, eof, recvd;
5241 int status;
5242
5243 status = decode_op_hdr(xdr, OP_READ);
5244 if (status)
5245 return status;
5246 p = xdr_inline_decode(xdr, 8);
5247 if (unlikely(!p))
5248 return -EIO;
5249 eof = be32_to_cpup(p++);
5250 count = be32_to_cpup(p);
5251 recvd = xdr_read_pages(xdr, count);
5252 if (count > recvd) {
5253 dprintk("NFS: server cheating in read reply: "
5254 "count %u > recvd %u\n", count, recvd);
5255 count = recvd;
5256 eof = 0;
5257 }
5258 res->eof = eof;
5259 res->count = count;
5260 return 0;
5261}
5262
5263static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5264{
5265 int status;
5266 __be32 verf[2];
5267
5268 status = decode_op_hdr(xdr, OP_READDIR);
5269 if (!status)
5270 status = decode_verifier(xdr, readdir->verifier.data);
5271 if (unlikely(status))
5272 return status;
5273 memcpy(verf, readdir->verifier.data, sizeof(verf));
5274 dprintk("%s: verifier = %08x:%08x\n",
5275 __func__, verf[0], verf[1]);
5276 return xdr_read_pages(xdr, xdr->buf->page_len);
5277}
5278
5279static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5280{
5281 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5282 u32 len, recvd;
5283 __be32 *p;
5284 int status;
5285
5286 status = decode_op_hdr(xdr, OP_READLINK);
5287 if (status)
5288 return status;
5289
5290 /* Convert length of symlink */
5291 p = xdr_inline_decode(xdr, 4);
5292 if (unlikely(!p))
5293 return -EIO;
5294 len = be32_to_cpup(p);
5295 if (len >= rcvbuf->page_len || len <= 0) {
5296 dprintk("nfs: server returned giant symlink!\n");
5297 return -ENAMETOOLONG;
5298 }
5299 recvd = xdr_read_pages(xdr, len);
5300 if (recvd < len) {
5301 dprintk("NFS: server cheating in readlink reply: "
5302 "count %u > recvd %u\n", len, recvd);
5303 return -EIO;
5304 }
5305 /*
5306 * The XDR encode routine has set things up so that
5307 * the link text will be copied directly into the
5308 * buffer. We just have to do overflow-checking,
5309 * and null-terminate the text (the VFS expects
5310 * null-termination).
5311 */
5312 xdr_terminate_string(rcvbuf, len);
5313 return 0;
5314}
5315
5316static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5317{
5318 int status;
5319
5320 status = decode_op_hdr(xdr, OP_REMOVE);
5321 if (status)
5322 goto out;
5323 status = decode_change_info(xdr, cinfo);
5324out:
5325 return status;
5326}
5327
5328static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5329 struct nfs4_change_info *new_cinfo)
5330{
5331 int status;
5332
5333 status = decode_op_hdr(xdr, OP_RENAME);
5334 if (status)
5335 goto out;
5336 if ((status = decode_change_info(xdr, old_cinfo)))
5337 goto out;
5338 status = decode_change_info(xdr, new_cinfo);
5339out:
5340 return status;
5341}
5342
5343static int decode_renew(struct xdr_stream *xdr)
5344{
5345 return decode_op_hdr(xdr, OP_RENEW);
5346}
5347
5348static int
5349decode_restorefh(struct xdr_stream *xdr)
5350{
5351 return decode_op_hdr(xdr, OP_RESTOREFH);
5352}
5353
5354static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5355 struct nfs_getaclres *res)
5356{
5357 unsigned int savep;
5358 uint32_t attrlen,
5359 bitmap[3] = {0};
5360 int status;
5361
5362 res->acl_len = 0;
5363 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5364 goto out;
5365
5366 xdr_enter_page(xdr, xdr->buf->page_len);
5367
5368 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5369 goto out;
5370 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5371 goto out;
5372
5373 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5374 return -EIO;
5375 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5376
5377 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5378 * are stored with the acl data to handle the problem of
5379 * variable length bitmaps.*/
5380 res->acl_data_offset = xdr_page_pos(xdr);
5381 res->acl_len = attrlen;
5382
5383 /* Check for receive buffer overflow */
5384 if (res->acl_len > xdr_stream_remaining(xdr) ||
5385 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5386 res->acl_flags |= NFS4_ACL_TRUNC;
5387 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5388 attrlen, xdr_stream_remaining(xdr));
5389 }
5390 } else
5391 status = -EOPNOTSUPP;
5392
5393out:
5394 return status;
5395}
5396
5397static int
5398decode_savefh(struct xdr_stream *xdr)
5399{
5400 return decode_op_hdr(xdr, OP_SAVEFH);
5401}
5402
5403static int decode_setattr(struct xdr_stream *xdr)
5404{
5405 int status;
5406
5407 status = decode_op_hdr(xdr, OP_SETATTR);
5408 if (status)
5409 return status;
5410 if (decode_bitmap4(xdr, NULL, 0) >= 0)
5411 return 0;
5412 return -EIO;
5413}
5414
5415static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5416{
5417 __be32 *p;
5418 uint32_t opnum;
5419 int32_t nfserr;
5420
5421 p = xdr_inline_decode(xdr, 8);
5422 if (unlikely(!p))
5423 return -EIO;
5424 opnum = be32_to_cpup(p++);
5425 if (opnum != OP_SETCLIENTID) {
5426 dprintk("nfs: decode_setclientid: Server returned operation"
5427 " %d\n", opnum);
5428 return -EIO;
5429 }
5430 nfserr = be32_to_cpup(p);
5431 if (nfserr == NFS_OK) {
5432 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5433 if (unlikely(!p))
5434 return -EIO;
5435 p = xdr_decode_hyper(p, &res->clientid);
5436 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5437 } else if (nfserr == NFSERR_CLID_INUSE) {
5438 uint32_t len;
5439
5440 /* skip netid string */
5441 p = xdr_inline_decode(xdr, 4);
5442 if (unlikely(!p))
5443 return -EIO;
5444 len = be32_to_cpup(p);
5445 p = xdr_inline_decode(xdr, len);
5446 if (unlikely(!p))
5447 return -EIO;
5448
5449 /* skip uaddr string */
5450 p = xdr_inline_decode(xdr, 4);
5451 if (unlikely(!p))
5452 return -EIO;
5453 len = be32_to_cpup(p);
5454 p = xdr_inline_decode(xdr, len);
5455 if (unlikely(!p))
5456 return -EIO;
5457 return -NFSERR_CLID_INUSE;
5458 } else
5459 return nfs4_stat_to_errno(nfserr);
5460
5461 return 0;
5462}
5463
5464static int decode_setclientid_confirm(struct xdr_stream *xdr)
5465{
5466 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5467}
5468
5469static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5470{
5471 __be32 *p;
5472 int status;
5473
5474 status = decode_op_hdr(xdr, OP_WRITE);
5475 if (status)
5476 return status;
5477
5478 p = xdr_inline_decode(xdr, 8);
5479 if (unlikely(!p))
5480 return -EIO;
5481 res->count = be32_to_cpup(p++);
5482 res->verf->committed = be32_to_cpup(p++);
5483 return decode_write_verifier(xdr, &res->verf->verifier);
5484}
5485
5486static int decode_delegreturn(struct xdr_stream *xdr)
5487{
5488 return decode_op_hdr(xdr, OP_DELEGRETURN);
5489}
5490
5491static int decode_secinfo_gss(struct xdr_stream *xdr,
5492 struct nfs4_secinfo4 *flavor)
5493{
5494 u32 oid_len;
5495 __be32 *p;
5496
5497 p = xdr_inline_decode(xdr, 4);
5498 if (unlikely(!p))
5499 return -EIO;
5500 oid_len = be32_to_cpup(p);
5501 if (oid_len > GSS_OID_MAX_LEN)
5502 return -EINVAL;
5503
5504 p = xdr_inline_decode(xdr, oid_len);
5505 if (unlikely(!p))
5506 return -EIO;
5507 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5508 flavor->flavor_info.oid.len = oid_len;
5509
5510 p = xdr_inline_decode(xdr, 8);
5511 if (unlikely(!p))
5512 return -EIO;
5513 flavor->flavor_info.qop = be32_to_cpup(p++);
5514 flavor->flavor_info.service = be32_to_cpup(p);
5515
5516 return 0;
5517}
5518
5519static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5520{
5521 struct nfs4_secinfo4 *sec_flavor;
5522 unsigned int i, num_flavors;
5523 int status;
5524 __be32 *p;
5525
5526 p = xdr_inline_decode(xdr, 4);
5527 if (unlikely(!p))
5528 return -EIO;
5529
5530 res->flavors->num_flavors = 0;
5531 num_flavors = be32_to_cpup(p);
5532
5533 for (i = 0; i < num_flavors; i++) {
5534 sec_flavor = &res->flavors->flavors[i];
5535 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5536 break;
5537
5538 p = xdr_inline_decode(xdr, 4);
5539 if (unlikely(!p))
5540 return -EIO;
5541 sec_flavor->flavor = be32_to_cpup(p);
5542
5543 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5544 status = decode_secinfo_gss(xdr, sec_flavor);
5545 if (status)
5546 goto out;
5547 }
5548 res->flavors->num_flavors++;
5549 }
5550
5551 status = 0;
5552out:
5553 return status;
5554}
5555
5556static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5557{
5558 int status = decode_op_hdr(xdr, OP_SECINFO);
5559 if (status)
5560 return status;
5561 return decode_secinfo_common(xdr, res);
5562}
5563
5564#if defined(CONFIG_NFS_V4_1)
5565static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5566{
5567 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5568 if (status)
5569 return status;
5570 return decode_secinfo_common(xdr, res);
5571}
5572
5573static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5574{
5575 __be32 *p;
5576 uint32_t bitmap_words;
5577 unsigned int i;
5578
5579 p = xdr_inline_decode(xdr, 4);
5580 if (!p)
5581 return -EIO;
5582 bitmap_words = be32_to_cpup(p++);
5583 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5584 return -EIO;
5585 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5586 for (i = 0; i < bitmap_words; i++)
5587 op_map->u.words[i] = be32_to_cpup(p++);
5588
5589 return 0;
5590}
5591
5592static int decode_exchange_id(struct xdr_stream *xdr,
5593 struct nfs41_exchange_id_res *res)
5594{
5595 __be32 *p;
5596 uint32_t dummy;
5597 char *dummy_str;
5598 int status;
5599 uint32_t impl_id_count;
5600
5601 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5602 if (status)
5603 return status;
5604
5605 p = xdr_inline_decode(xdr, 8);
5606 if (unlikely(!p))
5607 return -EIO;
5608 xdr_decode_hyper(p, &res->clientid);
5609 p = xdr_inline_decode(xdr, 12);
5610 if (unlikely(!p))
5611 return -EIO;
5612 res->seqid = be32_to_cpup(p++);
5613 res->flags = be32_to_cpup(p++);
5614
5615 res->state_protect.how = be32_to_cpup(p);
5616 switch (res->state_protect.how) {
5617 case SP4_NONE:
5618 break;
5619 case SP4_MACH_CRED:
5620 status = decode_op_map(xdr, &res->state_protect.enforce);
5621 if (status)
5622 return status;
5623 status = decode_op_map(xdr, &res->state_protect.allow);
5624 if (status)
5625 return status;
5626 break;
5627 default:
5628 WARN_ON_ONCE(1);
5629 return -EIO;
5630 }
5631
5632 /* server_owner4.so_minor_id */
5633 p = xdr_inline_decode(xdr, 8);
5634 if (unlikely(!p))
5635 return -EIO;
5636 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5637
5638 /* server_owner4.so_major_id */
5639 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5640 if (unlikely(status))
5641 return status;
5642 memcpy(res->server_owner->major_id, dummy_str, dummy);
5643 res->server_owner->major_id_sz = dummy;
5644
5645 /* server_scope4 */
5646 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5647 if (unlikely(status))
5648 return status;
5649 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5650 res->server_scope->server_scope_sz = dummy;
5651
5652 /* Implementation Id */
5653 p = xdr_inline_decode(xdr, 4);
5654 if (unlikely(!p))
5655 return -EIO;
5656 impl_id_count = be32_to_cpup(p++);
5657
5658 if (impl_id_count) {
5659 /* nii_domain */
5660 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5661 if (unlikely(status))
5662 return status;
5663 memcpy(res->impl_id->domain, dummy_str, dummy);
5664
5665 /* nii_name */
5666 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5667 if (unlikely(status))
5668 return status;
5669 memcpy(res->impl_id->name, dummy_str, dummy);
5670
5671 /* nii_date */
5672 p = xdr_inline_decode(xdr, 12);
5673 if (unlikely(!p))
5674 return -EIO;
5675 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5676 res->impl_id->date.nseconds = be32_to_cpup(p);
5677
5678 /* if there's more than one entry, ignore the rest */
5679 }
5680 return 0;
5681}
5682
5683static int decode_chan_attrs(struct xdr_stream *xdr,
5684 struct nfs4_channel_attrs *attrs)
5685{
5686 __be32 *p;
5687 u32 nr_attrs, val;
5688
5689 p = xdr_inline_decode(xdr, 28);
5690 if (unlikely(!p))
5691 return -EIO;
5692 val = be32_to_cpup(p++); /* headerpadsz */
5693 if (val)
5694 return -EINVAL; /* no support for header padding yet */
5695 attrs->max_rqst_sz = be32_to_cpup(p++);
5696 attrs->max_resp_sz = be32_to_cpup(p++);
5697 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5698 attrs->max_ops = be32_to_cpup(p++);
5699 attrs->max_reqs = be32_to_cpup(p++);
5700 nr_attrs = be32_to_cpup(p);
5701 if (unlikely(nr_attrs > 1)) {
5702 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5703 "count %u\n", __func__, nr_attrs);
5704 return -EINVAL;
5705 }
5706 if (nr_attrs == 1) {
5707 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5708 if (unlikely(!p))
5709 return -EIO;
5710 }
5711 return 0;
5712}
5713
5714static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5715{
5716 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5717}
5718
5719static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5720 struct nfs41_bind_conn_to_session_res *res)
5721{
5722 __be32 *p;
5723 int status;
5724
5725 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5726 if (!status)
5727 status = decode_sessionid(xdr, &res->sessionid);
5728 if (unlikely(status))
5729 return status;
5730
5731 /* dir flags, rdma mode bool */
5732 p = xdr_inline_decode(xdr, 8);
5733 if (unlikely(!p))
5734 return -EIO;
5735
5736 res->dir = be32_to_cpup(p++);
5737 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5738 return -EIO;
5739 if (be32_to_cpup(p) == 0)
5740 res->use_conn_in_rdma_mode = false;
5741 else
5742 res->use_conn_in_rdma_mode = true;
5743
5744 return 0;
5745}
5746
5747static int decode_create_session(struct xdr_stream *xdr,
5748 struct nfs41_create_session_res *res)
5749{
5750 __be32 *p;
5751 int status;
5752
5753 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5754 if (!status)
5755 status = decode_sessionid(xdr, &res->sessionid);
5756 if (unlikely(status))
5757 return status;
5758
5759 /* seqid, flags */
5760 p = xdr_inline_decode(xdr, 8);
5761 if (unlikely(!p))
5762 return -EIO;
5763 res->seqid = be32_to_cpup(p++);
5764 res->flags = be32_to_cpup(p);
5765
5766 /* Channel attributes */
5767 status = decode_chan_attrs(xdr, &res->fc_attrs);
5768 if (!status)
5769 status = decode_chan_attrs(xdr, &res->bc_attrs);
5770 return status;
5771}
5772
5773static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5774{
5775 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5776}
5777
5778static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5779{
5780 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5781}
5782
5783static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5784{
5785 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5786}
5787#endif /* CONFIG_NFS_V4_1 */
5788
5789static int decode_sequence(struct xdr_stream *xdr,
5790 struct nfs4_sequence_res *res,
5791 struct rpc_rqst *rqstp)
5792{
5793#if defined(CONFIG_NFS_V4_1)
5794 struct nfs4_session *session;
5795 struct nfs4_sessionid id;
5796 u32 dummy;
5797 int status;
5798 __be32 *p;
5799
5800 if (res->sr_slot == NULL)
5801 return 0;
5802 if (!res->sr_slot->table->session)
5803 return 0;
5804
5805 status = decode_op_hdr(xdr, OP_SEQUENCE);
5806 if (!status)
5807 status = decode_sessionid(xdr, &id);
5808 if (unlikely(status))
5809 goto out_err;
5810
5811 /*
5812 * If the server returns different values for sessionID, slotID or
5813 * sequence number, the server is looney tunes.
5814 */
5815 status = -EREMOTEIO;
5816 session = res->sr_slot->table->session;
5817
5818 if (memcmp(id.data, session->sess_id.data,
5819 NFS4_MAX_SESSIONID_LEN)) {
5820 dprintk("%s Invalid session id\n", __func__);
5821 goto out_err;
5822 }
5823
5824 p = xdr_inline_decode(xdr, 20);
5825 if (unlikely(!p))
5826 goto out_overflow;
5827
5828 /* seqid */
5829 dummy = be32_to_cpup(p++);
5830 if (dummy != res->sr_slot->seq_nr) {
5831 dprintk("%s Invalid sequence number\n", __func__);
5832 goto out_err;
5833 }
5834 /* slot id */
5835 dummy = be32_to_cpup(p++);
5836 if (dummy != res->sr_slot->slot_nr) {
5837 dprintk("%s Invalid slot id\n", __func__);
5838 goto out_err;
5839 }
5840 /* highest slot id */
5841 res->sr_highest_slotid = be32_to_cpup(p++);
5842 /* target highest slot id */
5843 res->sr_target_highest_slotid = be32_to_cpup(p++);
5844 /* result flags */
5845 res->sr_status_flags = be32_to_cpup(p);
5846 status = 0;
5847out_err:
5848 res->sr_status = status;
5849 return status;
5850out_overflow:
5851 status = -EIO;
5852 goto out_err;
5853#else /* CONFIG_NFS_V4_1 */
5854 return 0;
5855#endif /* CONFIG_NFS_V4_1 */
5856}
5857
5858#if defined(CONFIG_NFS_V4_1)
5859static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5860{
5861 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5862 return decode_stateid(xdr, stateid);
5863}
5864
5865static int decode_getdeviceinfo(struct xdr_stream *xdr,
5866 struct nfs4_getdeviceinfo_res *res)
5867{
5868 struct pnfs_device *pdev = res->pdev;
5869 __be32 *p;
5870 uint32_t len, type;
5871 int status;
5872
5873 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5874 if (status) {
5875 if (status == -ETOOSMALL) {
5876 p = xdr_inline_decode(xdr, 4);
5877 if (unlikely(!p))
5878 return -EIO;
5879 pdev->mincount = be32_to_cpup(p);
5880 dprintk("%s: Min count too small. mincnt = %u\n",
5881 __func__, pdev->mincount);
5882 }
5883 return status;
5884 }
5885
5886 p = xdr_inline_decode(xdr, 8);
5887 if (unlikely(!p))
5888 return -EIO;
5889 type = be32_to_cpup(p++);
5890 if (type != pdev->layout_type) {
5891 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5892 __func__, pdev->layout_type, type);
5893 return -EINVAL;
5894 }
5895 /*
5896 * Get the length of the opaque device_addr4. xdr_read_pages places
5897 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5898 * and places the remaining xdr data in xdr_buf->tail
5899 */
5900 pdev->mincount = be32_to_cpup(p);
5901 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5902 return -EIO;
5903
5904 /* Parse notification bitmap, verifying that it is zero. */
5905 p = xdr_inline_decode(xdr, 4);
5906 if (unlikely(!p))
5907 return -EIO;
5908 len = be32_to_cpup(p);
5909 if (len) {
5910 uint32_t i;
5911
5912 p = xdr_inline_decode(xdr, 4 * len);
5913 if (unlikely(!p))
5914 return -EIO;
5915
5916 res->notification = be32_to_cpup(p++);
5917 for (i = 1; i < len; i++) {
5918 if (be32_to_cpup(p++)) {
5919 dprintk("%s: unsupported notification\n",
5920 __func__);
5921 return -EIO;
5922 }
5923 }
5924 }
5925 return 0;
5926}
5927
5928static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5929 struct nfs4_layoutget_res *res)
5930{
5931 __be32 *p;
5932 int status;
5933 u32 layout_count;
5934 u32 recvd;
5935
5936 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5937 if (status)
5938 goto out;
5939 p = xdr_inline_decode(xdr, 4);
5940 if (unlikely(!p))
5941 goto out_overflow;
5942 res->return_on_close = be32_to_cpup(p);
5943 decode_layout_stateid(xdr, &res->stateid);
5944 p = xdr_inline_decode(xdr, 4);
5945 if (unlikely(!p))
5946 goto out_overflow;
5947 layout_count = be32_to_cpup(p);
5948 if (!layout_count) {
5949 dprintk("%s: server responded with empty layout array\n",
5950 __func__);
5951 status = -EINVAL;
5952 goto out;
5953 }
5954
5955 p = xdr_inline_decode(xdr, 28);
5956 if (unlikely(!p))
5957 goto out_overflow;
5958 p = xdr_decode_hyper(p, &res->range.offset);
5959 p = xdr_decode_hyper(p, &res->range.length);
5960 res->range.iomode = be32_to_cpup(p++);
5961 res->type = be32_to_cpup(p++);
5962 res->layoutp->len = be32_to_cpup(p);
5963
5964 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5965 __func__,
5966 (unsigned long)res->range.offset,
5967 (unsigned long)res->range.length,
5968 res->range.iomode,
5969 res->type,
5970 res->layoutp->len);
5971
5972 recvd = xdr_read_pages(xdr, res->layoutp->len);
5973 if (res->layoutp->len > recvd) {
5974 dprintk("NFS: server cheating in layoutget reply: "
5975 "layout len %u > recvd %u\n",
5976 res->layoutp->len, recvd);
5977 status = -EINVAL;
5978 goto out;
5979 }
5980
5981 if (layout_count > 1) {
5982 /* We only handle a length one array at the moment. Any
5983 * further entries are just ignored. Note that this means
5984 * the client may see a response that is less than the
5985 * minimum it requested.
5986 */
5987 dprintk("%s: server responded with %d layouts, dropping tail\n",
5988 __func__, layout_count);
5989 }
5990
5991out:
5992 res->status = status;
5993 return status;
5994out_overflow:
5995 status = -EIO;
5996 goto out;
5997}
5998
5999static int decode_layoutreturn(struct xdr_stream *xdr,
6000 struct nfs4_layoutreturn_res *res)
6001{
6002 __be32 *p;
6003 int status;
6004
6005 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6006 if (status)
6007 return status;
6008 p = xdr_inline_decode(xdr, 4);
6009 if (unlikely(!p))
6010 return -EIO;
6011 res->lrs_present = be32_to_cpup(p);
6012 if (res->lrs_present)
6013 status = decode_layout_stateid(xdr, &res->stateid);
6014 else
6015 nfs4_stateid_copy(&res->stateid, &invalid_stateid);
6016 return status;
6017}
6018
6019static int decode_layoutcommit(struct xdr_stream *xdr,
6020 struct rpc_rqst *req,
6021 struct nfs4_layoutcommit_res *res)
6022{
6023 __be32 *p;
6024 __u32 sizechanged;
6025 int status;
6026
6027 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6028 res->status = status;
6029 if (status)
6030 return status;
6031
6032 p = xdr_inline_decode(xdr, 4);
6033 if (unlikely(!p))
6034 return -EIO;
6035 sizechanged = be32_to_cpup(p);
6036
6037 if (sizechanged) {
6038 /* throw away new size */
6039 p = xdr_inline_decode(xdr, 8);
6040 if (unlikely(!p))
6041 return -EIO;
6042 }
6043 return 0;
6044}
6045
6046static int decode_test_stateid(struct xdr_stream *xdr,
6047 struct nfs41_test_stateid_res *res)
6048{
6049 __be32 *p;
6050 int status;
6051 int num_res;
6052
6053 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6054 if (status)
6055 return status;
6056
6057 p = xdr_inline_decode(xdr, 4);
6058 if (unlikely(!p))
6059 return -EIO;
6060 num_res = be32_to_cpup(p++);
6061 if (num_res != 1)
6062 return -EIO;
6063
6064 p = xdr_inline_decode(xdr, 4);
6065 if (unlikely(!p))
6066 return -EIO;
6067 res->status = be32_to_cpup(p++);
6068
6069 return status;
6070}
6071
6072static int decode_free_stateid(struct xdr_stream *xdr,
6073 struct nfs41_free_stateid_res *res)
6074{
6075 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6076 return res->status;
6077}
6078#else
6079static inline
6080int decode_layoutreturn(struct xdr_stream *xdr,
6081 struct nfs4_layoutreturn_res *res)
6082{
6083 return 0;
6084}
6085
6086static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6087 struct nfs4_layoutget_res *res)
6088{
6089 return 0;
6090}
6091
6092#endif /* CONFIG_NFS_V4_1 */
6093
6094/*
6095 * END OF "GENERIC" DECODE ROUTINES.
6096 */
6097
6098/*
6099 * Decode OPEN_DOWNGRADE response
6100 */
6101static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6102 struct xdr_stream *xdr,
6103 void *data)
6104{
6105 struct nfs_closeres *res = data;
6106 struct compound_hdr hdr;
6107 int status;
6108
6109 status = decode_compound_hdr(xdr, &hdr);
6110 if (status)
6111 goto out;
6112 status = decode_sequence(xdr, &res->seq_res, rqstp);
6113 if (status)
6114 goto out;
6115 status = decode_putfh(xdr);
6116 if (status)
6117 goto out;
6118 if (res->lr_res) {
6119 status = decode_layoutreturn(xdr, res->lr_res);
6120 res->lr_ret = status;
6121 if (status)
6122 goto out;
6123 }
6124 status = decode_open_downgrade(xdr, res);
6125out:
6126 return status;
6127}
6128
6129/*
6130 * Decode ACCESS response
6131 */
6132static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6133 void *data)
6134{
6135 struct nfs4_accessres *res = data;
6136 struct compound_hdr hdr;
6137 int status;
6138
6139 status = decode_compound_hdr(xdr, &hdr);
6140 if (status)
6141 goto out;
6142 status = decode_sequence(xdr, &res->seq_res, rqstp);
6143 if (status)
6144 goto out;
6145 status = decode_putfh(xdr);
6146 if (status != 0)
6147 goto out;
6148 status = decode_access(xdr, &res->supported, &res->access);
6149 if (status != 0)
6150 goto out;
6151 if (res->fattr)
6152 decode_getfattr(xdr, res->fattr, res->server);
6153out:
6154 return status;
6155}
6156
6157/*
6158 * Decode LOOKUP response
6159 */
6160static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6161 void *data)
6162{
6163 struct nfs4_lookup_res *res = data;
6164 struct compound_hdr hdr;
6165 int status;
6166
6167 status = decode_compound_hdr(xdr, &hdr);
6168 if (status)
6169 goto out;
6170 status = decode_sequence(xdr, &res->seq_res, rqstp);
6171 if (status)
6172 goto out;
6173 status = decode_putfh(xdr);
6174 if (status)
6175 goto out;
6176 status = decode_lookup(xdr);
6177 if (status)
6178 goto out;
6179 status = decode_getfh(xdr, res->fh);
6180 if (status)
6181 goto out;
6182 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6183out:
6184 return status;
6185}
6186
6187/*
6188 * Decode LOOKUPP response
6189 */
6190static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6191 void *data)
6192{
6193 struct nfs4_lookupp_res *res = data;
6194 struct compound_hdr hdr;
6195 int status;
6196
6197 status = decode_compound_hdr(xdr, &hdr);
6198 if (status)
6199 goto out;
6200 status = decode_sequence(xdr, &res->seq_res, rqstp);
6201 if (status)
6202 goto out;
6203 status = decode_putfh(xdr);
6204 if (status)
6205 goto out;
6206 status = decode_lookupp(xdr);
6207 if (status)
6208 goto out;
6209 status = decode_getfh(xdr, res->fh);
6210 if (status)
6211 goto out;
6212 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6213out:
6214 return status;
6215}
6216
6217/*
6218 * Decode LOOKUP_ROOT response
6219 */
6220static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6221 struct xdr_stream *xdr,
6222 void *data)
6223{
6224 struct nfs4_lookup_res *res = data;
6225 struct compound_hdr hdr;
6226 int status;
6227
6228 status = decode_compound_hdr(xdr, &hdr);
6229 if (status)
6230 goto out;
6231 status = decode_sequence(xdr, &res->seq_res, rqstp);
6232 if (status)
6233 goto out;
6234 status = decode_putrootfh(xdr);
6235 if (status)
6236 goto out;
6237 status = decode_getfh(xdr, res->fh);
6238 if (status == 0)
6239 status = decode_getfattr_label(xdr, res->fattr,
6240 res->label, res->server);
6241out:
6242 return status;
6243}
6244
6245/*
6246 * Decode REMOVE response
6247 */
6248static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6249 void *data)
6250{
6251 struct nfs_removeres *res = data;
6252 struct compound_hdr hdr;
6253 int status;
6254
6255 status = decode_compound_hdr(xdr, &hdr);
6256 if (status)
6257 goto out;
6258 status = decode_sequence(xdr, &res->seq_res, rqstp);
6259 if (status)
6260 goto out;
6261 status = decode_putfh(xdr);
6262 if (status)
6263 goto out;
6264 status = decode_remove(xdr, &res->cinfo);
6265out:
6266 return status;
6267}
6268
6269/*
6270 * Decode RENAME response
6271 */
6272static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6273 void *data)
6274{
6275 struct nfs_renameres *res = data;
6276 struct compound_hdr hdr;
6277 int status;
6278
6279 status = decode_compound_hdr(xdr, &hdr);
6280 if (status)
6281 goto out;
6282 status = decode_sequence(xdr, &res->seq_res, rqstp);
6283 if (status)
6284 goto out;
6285 status = decode_putfh(xdr);
6286 if (status)
6287 goto out;
6288 status = decode_savefh(xdr);
6289 if (status)
6290 goto out;
6291 status = decode_putfh(xdr);
6292 if (status)
6293 goto out;
6294 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6295out:
6296 return status;
6297}
6298
6299/*
6300 * Decode LINK response
6301 */
6302static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6303 void *data)
6304{
6305 struct nfs4_link_res *res = data;
6306 struct compound_hdr hdr;
6307 int status;
6308
6309 status = decode_compound_hdr(xdr, &hdr);
6310 if (status)
6311 goto out;
6312 status = decode_sequence(xdr, &res->seq_res, rqstp);
6313 if (status)
6314 goto out;
6315 status = decode_putfh(xdr);
6316 if (status)
6317 goto out;
6318 status = decode_savefh(xdr);
6319 if (status)
6320 goto out;
6321 status = decode_putfh(xdr);
6322 if (status)
6323 goto out;
6324 status = decode_link(xdr, &res->cinfo);
6325 if (status)
6326 goto out;
6327 /*
6328 * Note order: OP_LINK leaves the directory as the current
6329 * filehandle.
6330 */
6331 status = decode_restorefh(xdr);
6332 if (status)
6333 goto out;
6334 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6335out:
6336 return status;
6337}
6338
6339/*
6340 * Decode CREATE response
6341 */
6342static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6343 void *data)
6344{
6345 struct nfs4_create_res *res = data;
6346 struct compound_hdr hdr;
6347 int status;
6348
6349 status = decode_compound_hdr(xdr, &hdr);
6350 if (status)
6351 goto out;
6352 status = decode_sequence(xdr, &res->seq_res, rqstp);
6353 if (status)
6354 goto out;
6355 status = decode_putfh(xdr);
6356 if (status)
6357 goto out;
6358 status = decode_create(xdr, &res->dir_cinfo);
6359 if (status)
6360 goto out;
6361 status = decode_getfh(xdr, res->fh);
6362 if (status)
6363 goto out;
6364 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6365out:
6366 return status;
6367}
6368
6369/*
6370 * Decode SYMLINK response
6371 */
6372static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6373 void *res)
6374{
6375 return nfs4_xdr_dec_create(rqstp, xdr, res);
6376}
6377
6378/*
6379 * Decode GETATTR response
6380 */
6381static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6382 void *data)
6383{
6384 struct nfs4_getattr_res *res = data;
6385 struct compound_hdr hdr;
6386 int status;
6387
6388 status = decode_compound_hdr(xdr, &hdr);
6389 if (status)
6390 goto out;
6391 status = decode_sequence(xdr, &res->seq_res, rqstp);
6392 if (status)
6393 goto out;
6394 status = decode_putfh(xdr);
6395 if (status)
6396 goto out;
6397 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6398out:
6399 return status;
6400}
6401
6402/*
6403 * Encode an SETACL request
6404 */
6405static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6406 const void *data)
6407{
6408 const struct nfs_setaclargs *args = data;
6409 struct compound_hdr hdr = {
6410 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6411 };
6412
6413 encode_compound_hdr(xdr, req, &hdr);
6414 encode_sequence(xdr, &args->seq_args, &hdr);
6415 encode_putfh(xdr, args->fh, &hdr);
6416 encode_setacl(xdr, args, &hdr);
6417 encode_nops(&hdr);
6418}
6419
6420/*
6421 * Decode SETACL response
6422 */
6423static int
6424nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6425 void *data)
6426{
6427 struct nfs_setaclres *res = data;
6428 struct compound_hdr hdr;
6429 int status;
6430
6431 status = decode_compound_hdr(xdr, &hdr);
6432 if (status)
6433 goto out;
6434 status = decode_sequence(xdr, &res->seq_res, rqstp);
6435 if (status)
6436 goto out;
6437 status = decode_putfh(xdr);
6438 if (status)
6439 goto out;
6440 status = decode_setattr(xdr);
6441out:
6442 return status;
6443}
6444
6445/*
6446 * Decode GETACL response
6447 */
6448static int
6449nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6450 void *data)
6451{
6452 struct nfs_getaclres *res = data;
6453 struct compound_hdr hdr;
6454 int status;
6455
6456 if (res->acl_scratch != NULL)
6457 xdr_set_scratch_page(xdr, res->acl_scratch);
6458 status = decode_compound_hdr(xdr, &hdr);
6459 if (status)
6460 goto out;
6461 status = decode_sequence(xdr, &res->seq_res, rqstp);
6462 if (status)
6463 goto out;
6464 status = decode_putfh(xdr);
6465 if (status)
6466 goto out;
6467 status = decode_getacl(xdr, rqstp, res);
6468
6469out:
6470 return status;
6471}
6472
6473/*
6474 * Decode CLOSE response
6475 */
6476static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6477 void *data)
6478{
6479 struct nfs_closeres *res = data;
6480 struct compound_hdr hdr;
6481 int status;
6482
6483 status = decode_compound_hdr(xdr, &hdr);
6484 if (status)
6485 goto out;
6486 status = decode_sequence(xdr, &res->seq_res, rqstp);
6487 if (status)
6488 goto out;
6489 status = decode_putfh(xdr);
6490 if (status)
6491 goto out;
6492 if (res->lr_res) {
6493 status = decode_layoutreturn(xdr, res->lr_res);
6494 res->lr_ret = status;
6495 if (status)
6496 goto out;
6497 }
6498 if (res->fattr != NULL) {
6499 status = decode_getfattr(xdr, res->fattr, res->server);
6500 if (status != 0)
6501 goto out;
6502 }
6503 status = decode_close(xdr, res);
6504out:
6505 return status;
6506}
6507
6508/*
6509 * Decode OPEN response
6510 */
6511static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6512 void *data)
6513{
6514 struct nfs_openres *res = data;
6515 struct compound_hdr hdr;
6516 int status;
6517
6518 status = decode_compound_hdr(xdr, &hdr);
6519 if (status)
6520 goto out;
6521 status = decode_sequence(xdr, &res->seq_res, rqstp);
6522 if (status)
6523 goto out;
6524 status = decode_putfh(xdr);
6525 if (status)
6526 goto out;
6527 status = decode_open(xdr, res);
6528 if (status)
6529 goto out;
6530 status = decode_getfh(xdr, &res->fh);
6531 if (status)
6532 goto out;
6533 if (res->access_request)
6534 decode_access(xdr, &res->access_supported, &res->access_result);
6535 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6536 if (res->lg_res)
6537 decode_layoutget(xdr, rqstp, res->lg_res);
6538out:
6539 return status;
6540}
6541
6542/*
6543 * Decode OPEN_CONFIRM response
6544 */
6545static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6546 struct xdr_stream *xdr,
6547 void *data)
6548{
6549 struct nfs_open_confirmres *res = data;
6550 struct compound_hdr hdr;
6551 int status;
6552
6553 status = decode_compound_hdr(xdr, &hdr);
6554 if (status)
6555 goto out;
6556 status = decode_putfh(xdr);
6557 if (status)
6558 goto out;
6559 status = decode_open_confirm(xdr, res);
6560out:
6561 return status;
6562}
6563
6564/*
6565 * Decode OPEN response
6566 */
6567static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6568 struct xdr_stream *xdr,
6569 void *data)
6570{
6571 struct nfs_openres *res = data;
6572 struct compound_hdr hdr;
6573 int status;
6574
6575 status = decode_compound_hdr(xdr, &hdr);
6576 if (status)
6577 goto out;
6578 status = decode_sequence(xdr, &res->seq_res, rqstp);
6579 if (status)
6580 goto out;
6581 status = decode_putfh(xdr);
6582 if (status)
6583 goto out;
6584 status = decode_open(xdr, res);
6585 if (status)
6586 goto out;
6587 if (res->access_request)
6588 decode_access(xdr, &res->access_supported, &res->access_result);
6589 decode_getfattr(xdr, res->f_attr, res->server);
6590 if (res->lg_res)
6591 decode_layoutget(xdr, rqstp, res->lg_res);
6592out:
6593 return status;
6594}
6595
6596/*
6597 * Decode SETATTR response
6598 */
6599static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6600 struct xdr_stream *xdr,
6601 void *data)
6602{
6603 struct nfs_setattrres *res = data;
6604 struct compound_hdr hdr;
6605 int status;
6606
6607 status = decode_compound_hdr(xdr, &hdr);
6608 if (status)
6609 goto out;
6610 status = decode_sequence(xdr, &res->seq_res, rqstp);
6611 if (status)
6612 goto out;
6613 status = decode_putfh(xdr);
6614 if (status)
6615 goto out;
6616 status = decode_setattr(xdr);
6617 if (status)
6618 goto out;
6619 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6620out:
6621 return status;
6622}
6623
6624/*
6625 * Decode LOCK response
6626 */
6627static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6628 void *data)
6629{
6630 struct nfs_lock_res *res = data;
6631 struct compound_hdr hdr;
6632 int status;
6633
6634 status = decode_compound_hdr(xdr, &hdr);
6635 if (status)
6636 goto out;
6637 status = decode_sequence(xdr, &res->seq_res, rqstp);
6638 if (status)
6639 goto out;
6640 status = decode_putfh(xdr);
6641 if (status)
6642 goto out;
6643 status = decode_lock(xdr, res);
6644out:
6645 return status;
6646}
6647
6648/*
6649 * Decode LOCKT response
6650 */
6651static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6652 void *data)
6653{
6654 struct nfs_lockt_res *res = data;
6655 struct compound_hdr hdr;
6656 int status;
6657
6658 status = decode_compound_hdr(xdr, &hdr);
6659 if (status)
6660 goto out;
6661 status = decode_sequence(xdr, &res->seq_res, rqstp);
6662 if (status)
6663 goto out;
6664 status = decode_putfh(xdr);
6665 if (status)
6666 goto out;
6667 status = decode_lockt(xdr, res);
6668out:
6669 return status;
6670}
6671
6672/*
6673 * Decode LOCKU response
6674 */
6675static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6676 void *data)
6677{
6678 struct nfs_locku_res *res = data;
6679 struct compound_hdr hdr;
6680 int status;
6681
6682 status = decode_compound_hdr(xdr, &hdr);
6683 if (status)
6684 goto out;
6685 status = decode_sequence(xdr, &res->seq_res, rqstp);
6686 if (status)
6687 goto out;
6688 status = decode_putfh(xdr);
6689 if (status)
6690 goto out;
6691 status = decode_locku(xdr, res);
6692out:
6693 return status;
6694}
6695
6696static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6697 struct xdr_stream *xdr, void *dummy)
6698{
6699 struct compound_hdr hdr;
6700 int status;
6701
6702 status = decode_compound_hdr(xdr, &hdr);
6703 if (!status)
6704 status = decode_release_lockowner(xdr);
6705 return status;
6706}
6707
6708/*
6709 * Decode READLINK response
6710 */
6711static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6712 struct xdr_stream *xdr,
6713 void *data)
6714{
6715 struct nfs4_readlink_res *res = data;
6716 struct compound_hdr hdr;
6717 int status;
6718
6719 status = decode_compound_hdr(xdr, &hdr);
6720 if (status)
6721 goto out;
6722 status = decode_sequence(xdr, &res->seq_res, rqstp);
6723 if (status)
6724 goto out;
6725 status = decode_putfh(xdr);
6726 if (status)
6727 goto out;
6728 status = decode_readlink(xdr, rqstp);
6729out:
6730 return status;
6731}
6732
6733/*
6734 * Decode READDIR response
6735 */
6736static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6737 void *data)
6738{
6739 struct nfs4_readdir_res *res = data;
6740 struct compound_hdr hdr;
6741 int status;
6742
6743 status = decode_compound_hdr(xdr, &hdr);
6744 if (status)
6745 goto out;
6746 status = decode_sequence(xdr, &res->seq_res, rqstp);
6747 if (status)
6748 goto out;
6749 status = decode_putfh(xdr);
6750 if (status)
6751 goto out;
6752 status = decode_readdir(xdr, rqstp, res);
6753out:
6754 return status;
6755}
6756
6757/*
6758 * Decode Read response
6759 */
6760static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6761 void *data)
6762{
6763 struct nfs_pgio_res *res = data;
6764 struct compound_hdr hdr;
6765 int status;
6766
6767 status = decode_compound_hdr(xdr, &hdr);
6768 res->op_status = hdr.status;
6769 if (status)
6770 goto out;
6771 status = decode_sequence(xdr, &res->seq_res, rqstp);
6772 if (status)
6773 goto out;
6774 status = decode_putfh(xdr);
6775 if (status)
6776 goto out;
6777 status = decode_read(xdr, rqstp, res);
6778 if (!status)
6779 status = res->count;
6780out:
6781 return status;
6782}
6783
6784/*
6785 * Decode WRITE response
6786 */
6787static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6788 void *data)
6789{
6790 struct nfs_pgio_res *res = data;
6791 struct compound_hdr hdr;
6792 int status;
6793
6794 status = decode_compound_hdr(xdr, &hdr);
6795 res->op_status = hdr.status;
6796 if (status)
6797 goto out;
6798 status = decode_sequence(xdr, &res->seq_res, rqstp);
6799 if (status)
6800 goto out;
6801 status = decode_putfh(xdr);
6802 if (status)
6803 goto out;
6804 status = decode_write(xdr, res);
6805 if (status)
6806 goto out;
6807 if (res->fattr)
6808 decode_getfattr(xdr, res->fattr, res->server);
6809 if (!status)
6810 status = res->count;
6811out:
6812 return status;
6813}
6814
6815/*
6816 * Decode COMMIT response
6817 */
6818static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6819 void *data)
6820{
6821 struct nfs_commitres *res = data;
6822 struct compound_hdr hdr;
6823 int status;
6824
6825 status = decode_compound_hdr(xdr, &hdr);
6826 res->op_status = hdr.status;
6827 if (status)
6828 goto out;
6829 status = decode_sequence(xdr, &res->seq_res, rqstp);
6830 if (status)
6831 goto out;
6832 status = decode_putfh(xdr);
6833 if (status)
6834 goto out;
6835 status = decode_commit(xdr, res);
6836out:
6837 return status;
6838}
6839
6840/*
6841 * Decode FSINFO response
6842 */
6843static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6844 void *data)
6845{
6846 struct nfs4_fsinfo_res *res = data;
6847 struct compound_hdr hdr;
6848 int status;
6849
6850 status = decode_compound_hdr(xdr, &hdr);
6851 if (!status)
6852 status = decode_sequence(xdr, &res->seq_res, req);
6853 if (!status)
6854 status = decode_putfh(xdr);
6855 if (!status)
6856 status = decode_fsinfo(xdr, res->fsinfo);
6857 return status;
6858}
6859
6860/*
6861 * Decode PATHCONF response
6862 */
6863static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6864 void *data)
6865{
6866 struct nfs4_pathconf_res *res = data;
6867 struct compound_hdr hdr;
6868 int status;
6869
6870 status = decode_compound_hdr(xdr, &hdr);
6871 if (!status)
6872 status = decode_sequence(xdr, &res->seq_res, req);
6873 if (!status)
6874 status = decode_putfh(xdr);
6875 if (!status)
6876 status = decode_pathconf(xdr, res->pathconf);
6877 return status;
6878}
6879
6880/*
6881 * Decode STATFS response
6882 */
6883static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6884 void *data)
6885{
6886 struct nfs4_statfs_res *res = data;
6887 struct compound_hdr hdr;
6888 int status;
6889
6890 status = decode_compound_hdr(xdr, &hdr);
6891 if (!status)
6892 status = decode_sequence(xdr, &res->seq_res, req);
6893 if (!status)
6894 status = decode_putfh(xdr);
6895 if (!status)
6896 status = decode_statfs(xdr, res->fsstat);
6897 return status;
6898}
6899
6900/*
6901 * Decode GETATTR_BITMAP response
6902 */
6903static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6904 struct xdr_stream *xdr,
6905 void *data)
6906{
6907 struct nfs4_server_caps_res *res = data;
6908 struct compound_hdr hdr;
6909 int status;
6910
6911 status = decode_compound_hdr(xdr, &hdr);
6912 if (status)
6913 goto out;
6914 status = decode_sequence(xdr, &res->seq_res, req);
6915 if (status)
6916 goto out;
6917 status = decode_putfh(xdr);
6918 if (status)
6919 goto out;
6920 status = decode_server_caps(xdr, res);
6921out:
6922 return status;
6923}
6924
6925/*
6926 * Decode RENEW response
6927 */
6928static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6929 void *__unused)
6930{
6931 struct compound_hdr hdr;
6932 int status;
6933
6934 status = decode_compound_hdr(xdr, &hdr);
6935 if (!status)
6936 status = decode_renew(xdr);
6937 return status;
6938}
6939
6940/*
6941 * Decode SETCLIENTID response
6942 */
6943static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6944 struct xdr_stream *xdr,
6945 void *data)
6946{
6947 struct nfs4_setclientid_res *res = data;
6948 struct compound_hdr hdr;
6949 int status;
6950
6951 status = decode_compound_hdr(xdr, &hdr);
6952 if (!status)
6953 status = decode_setclientid(xdr, res);
6954 return status;
6955}
6956
6957/*
6958 * Decode SETCLIENTID_CONFIRM response
6959 */
6960static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6961 struct xdr_stream *xdr,
6962 void *data)
6963{
6964 struct compound_hdr hdr;
6965 int status;
6966
6967 status = decode_compound_hdr(xdr, &hdr);
6968 if (!status)
6969 status = decode_setclientid_confirm(xdr);
6970 return status;
6971}
6972
6973/*
6974 * Decode DELEGRETURN response
6975 */
6976static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6977 struct xdr_stream *xdr,
6978 void *data)
6979{
6980 struct nfs4_delegreturnres *res = data;
6981 struct compound_hdr hdr;
6982 int status;
6983
6984 status = decode_compound_hdr(xdr, &hdr);
6985 if (status)
6986 goto out;
6987 status = decode_sequence(xdr, &res->seq_res, rqstp);
6988 if (status)
6989 goto out;
6990 status = decode_putfh(xdr);
6991 if (status != 0)
6992 goto out;
6993 if (res->lr_res) {
6994 status = decode_layoutreturn(xdr, res->lr_res);
6995 res->lr_ret = status;
6996 if (status)
6997 goto out;
6998 }
6999 if (res->fattr) {
7000 status = decode_getfattr(xdr, res->fattr, res->server);
7001 if (status != 0)
7002 goto out;
7003 }
7004 status = decode_delegreturn(xdr);
7005out:
7006 return status;
7007}
7008
7009/*
7010 * Decode FS_LOCATIONS response
7011 */
7012static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7013 struct xdr_stream *xdr,
7014 void *data)
7015{
7016 struct nfs4_fs_locations_res *res = data;
7017 struct compound_hdr hdr;
7018 int status;
7019
7020 status = decode_compound_hdr(xdr, &hdr);
7021 if (status)
7022 goto out;
7023 status = decode_sequence(xdr, &res->seq_res, req);
7024 if (status)
7025 goto out;
7026 status = decode_putfh(xdr);
7027 if (status)
7028 goto out;
7029 if (res->migration) {
7030 xdr_enter_page(xdr, PAGE_SIZE);
7031 status = decode_getfattr_generic(xdr,
7032 &res->fs_locations->fattr,
7033 NULL, res->fs_locations,
7034 NULL, res->fs_locations->server);
7035 if (status)
7036 goto out;
7037 if (res->renew)
7038 status = decode_renew(xdr);
7039 } else {
7040 status = decode_lookup(xdr);
7041 if (status)
7042 goto out;
7043 xdr_enter_page(xdr, PAGE_SIZE);
7044 status = decode_getfattr_generic(xdr,
7045 &res->fs_locations->fattr,
7046 NULL, res->fs_locations,
7047 NULL, res->fs_locations->server);
7048 }
7049out:
7050 return status;
7051}
7052
7053/*
7054 * Decode SECINFO response
7055 */
7056static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7057 struct xdr_stream *xdr,
7058 void *data)
7059{
7060 struct nfs4_secinfo_res *res = data;
7061 struct compound_hdr hdr;
7062 int status;
7063
7064 status = decode_compound_hdr(xdr, &hdr);
7065 if (status)
7066 goto out;
7067 status = decode_sequence(xdr, &res->seq_res, rqstp);
7068 if (status)
7069 goto out;
7070 status = decode_putfh(xdr);
7071 if (status)
7072 goto out;
7073 status = decode_secinfo(xdr, res);
7074out:
7075 return status;
7076}
7077
7078/*
7079 * Decode FSID_PRESENT response
7080 */
7081static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7082 struct xdr_stream *xdr,
7083 void *data)
7084{
7085 struct nfs4_fsid_present_res *res = data;
7086 struct compound_hdr hdr;
7087 int status;
7088
7089 status = decode_compound_hdr(xdr, &hdr);
7090 if (status)
7091 goto out;
7092 status = decode_sequence(xdr, &res->seq_res, rqstp);
7093 if (status)
7094 goto out;
7095 status = decode_putfh(xdr);
7096 if (status)
7097 goto out;
7098 status = decode_getfh(xdr, res->fh);
7099 if (status)
7100 goto out;
7101 if (res->renew)
7102 status = decode_renew(xdr);
7103out:
7104 return status;
7105}
7106
7107#if defined(CONFIG_NFS_V4_1)
7108/*
7109 * Decode BIND_CONN_TO_SESSION response
7110 */
7111static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7112 struct xdr_stream *xdr,
7113 void *res)
7114{
7115 struct compound_hdr hdr;
7116 int status;
7117
7118 status = decode_compound_hdr(xdr, &hdr);
7119 if (!status)
7120 status = decode_bind_conn_to_session(xdr, res);
7121 return status;
7122}
7123
7124/*
7125 * Decode EXCHANGE_ID response
7126 */
7127static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7128 struct xdr_stream *xdr,
7129 void *res)
7130{
7131 struct compound_hdr hdr;
7132 int status;
7133
7134 status = decode_compound_hdr(xdr, &hdr);
7135 if (!status)
7136 status = decode_exchange_id(xdr, res);
7137 return status;
7138}
7139
7140/*
7141 * Decode CREATE_SESSION response
7142 */
7143static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7144 struct xdr_stream *xdr,
7145 void *res)
7146{
7147 struct compound_hdr hdr;
7148 int status;
7149
7150 status = decode_compound_hdr(xdr, &hdr);
7151 if (!status)
7152 status = decode_create_session(xdr, res);
7153 return status;
7154}
7155
7156/*
7157 * Decode DESTROY_SESSION response
7158 */
7159static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7160 struct xdr_stream *xdr,
7161 void *res)
7162{
7163 struct compound_hdr hdr;
7164 int status;
7165
7166 status = decode_compound_hdr(xdr, &hdr);
7167 if (!status)
7168 status = decode_destroy_session(xdr, res);
7169 return status;
7170}
7171
7172/*
7173 * Decode DESTROY_CLIENTID response
7174 */
7175static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7176 struct xdr_stream *xdr,
7177 void *res)
7178{
7179 struct compound_hdr hdr;
7180 int status;
7181
7182 status = decode_compound_hdr(xdr, &hdr);
7183 if (!status)
7184 status = decode_destroy_clientid(xdr, res);
7185 return status;
7186}
7187
7188/*
7189 * Decode SEQUENCE response
7190 */
7191static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7192 struct xdr_stream *xdr,
7193 void *res)
7194{
7195 struct compound_hdr hdr;
7196 int status;
7197
7198 status = decode_compound_hdr(xdr, &hdr);
7199 if (!status)
7200 status = decode_sequence(xdr, res, rqstp);
7201 return status;
7202}
7203
7204#endif
7205
7206/*
7207 * Decode GET_LEASE_TIME response
7208 */
7209static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7210 struct xdr_stream *xdr,
7211 void *data)
7212{
7213 struct nfs4_get_lease_time_res *res = data;
7214 struct compound_hdr hdr;
7215 int status;
7216
7217 status = decode_compound_hdr(xdr, &hdr);
7218 if (!status)
7219 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7220 if (!status)
7221 status = decode_putrootfh(xdr);
7222 if (!status)
7223 status = decode_fsinfo(xdr, res->lr_fsinfo);
7224 return status;
7225}
7226
7227#ifdef CONFIG_NFS_V4_1
7228
7229/*
7230 * Decode RECLAIM_COMPLETE response
7231 */
7232static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7233 struct xdr_stream *xdr,
7234 void *data)
7235{
7236 struct nfs41_reclaim_complete_res *res = data;
7237 struct compound_hdr hdr;
7238 int status;
7239
7240 status = decode_compound_hdr(xdr, &hdr);
7241 if (!status)
7242 status = decode_sequence(xdr, &res->seq_res, rqstp);
7243 if (!status)
7244 status = decode_reclaim_complete(xdr, NULL);
7245 return status;
7246}
7247
7248/*
7249 * Decode GETDEVINFO response
7250 */
7251static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7252 struct xdr_stream *xdr,
7253 void *data)
7254{
7255 struct nfs4_getdeviceinfo_res *res = data;
7256 struct compound_hdr hdr;
7257 int status;
7258
7259 status = decode_compound_hdr(xdr, &hdr);
7260 if (status != 0)
7261 goto out;
7262 status = decode_sequence(xdr, &res->seq_res, rqstp);
7263 if (status != 0)
7264 goto out;
7265 status = decode_getdeviceinfo(xdr, res);
7266out:
7267 return status;
7268}
7269
7270/*
7271 * Decode LAYOUTGET response
7272 */
7273static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7274 struct xdr_stream *xdr,
7275 void *data)
7276{
7277 struct nfs4_layoutget_res *res = data;
7278 struct compound_hdr hdr;
7279 int status;
7280
7281 status = decode_compound_hdr(xdr, &hdr);
7282 if (status)
7283 goto out;
7284 status = decode_sequence(xdr, &res->seq_res, rqstp);
7285 if (status)
7286 goto out;
7287 status = decode_putfh(xdr);
7288 if (status)
7289 goto out;
7290 status = decode_layoutget(xdr, rqstp, res);
7291out:
7292 return status;
7293}
7294
7295/*
7296 * Decode LAYOUTRETURN response
7297 */
7298static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7299 struct xdr_stream *xdr,
7300 void *data)
7301{
7302 struct nfs4_layoutreturn_res *res = data;
7303 struct compound_hdr hdr;
7304 int status;
7305
7306 status = decode_compound_hdr(xdr, &hdr);
7307 if (status)
7308 goto out;
7309 status = decode_sequence(xdr, &res->seq_res, rqstp);
7310 if (status)
7311 goto out;
7312 status = decode_putfh(xdr);
7313 if (status)
7314 goto out;
7315 status = decode_layoutreturn(xdr, res);
7316out:
7317 return status;
7318}
7319
7320/*
7321 * Decode LAYOUTCOMMIT response
7322 */
7323static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7324 struct xdr_stream *xdr,
7325 void *data)
7326{
7327 struct nfs4_layoutcommit_res *res = data;
7328 struct compound_hdr hdr;
7329 int status;
7330
7331 status = decode_compound_hdr(xdr, &hdr);
7332 if (status)
7333 goto out;
7334 status = decode_sequence(xdr, &res->seq_res, rqstp);
7335 if (status)
7336 goto out;
7337 status = decode_putfh(xdr);
7338 if (status)
7339 goto out;
7340 status = decode_layoutcommit(xdr, rqstp, res);
7341 if (status)
7342 goto out;
7343 decode_getfattr(xdr, res->fattr, res->server);
7344out:
7345 return status;
7346}
7347
7348/*
7349 * Decode SECINFO_NO_NAME response
7350 */
7351static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7352 struct xdr_stream *xdr,
7353 void *data)
7354{
7355 struct nfs4_secinfo_res *res = data;
7356 struct compound_hdr hdr;
7357 int status;
7358
7359 status = decode_compound_hdr(xdr, &hdr);
7360 if (status)
7361 goto out;
7362 status = decode_sequence(xdr, &res->seq_res, rqstp);
7363 if (status)
7364 goto out;
7365 status = decode_putrootfh(xdr);
7366 if (status)
7367 goto out;
7368 status = decode_secinfo_no_name(xdr, res);
7369out:
7370 return status;
7371}
7372
7373/*
7374 * Decode TEST_STATEID response
7375 */
7376static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7377 struct xdr_stream *xdr,
7378 void *data)
7379{
7380 struct nfs41_test_stateid_res *res = data;
7381 struct compound_hdr hdr;
7382 int status;
7383
7384 status = decode_compound_hdr(xdr, &hdr);
7385 if (status)
7386 goto out;
7387 status = decode_sequence(xdr, &res->seq_res, rqstp);
7388 if (status)
7389 goto out;
7390 status = decode_test_stateid(xdr, res);
7391out:
7392 return status;
7393}
7394
7395/*
7396 * Decode FREE_STATEID response
7397 */
7398static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7399 struct xdr_stream *xdr,
7400 void *data)
7401{
7402 struct nfs41_free_stateid_res *res = data;
7403 struct compound_hdr hdr;
7404 int status;
7405
7406 status = decode_compound_hdr(xdr, &hdr);
7407 if (status)
7408 goto out;
7409 status = decode_sequence(xdr, &res->seq_res, rqstp);
7410 if (status)
7411 goto out;
7412 status = decode_free_stateid(xdr, res);
7413out:
7414 return status;
7415}
7416#endif /* CONFIG_NFS_V4_1 */
7417
7418/**
7419 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7420 * the local page cache.
7421 * @xdr: XDR stream where entry resides
7422 * @entry: buffer to fill in with entry data
7423 * @plus: boolean indicating whether this should be a readdirplus entry
7424 *
7425 * Returns zero if successful, otherwise a negative errno value is
7426 * returned.
7427 *
7428 * This function is not invoked during READDIR reply decoding, but
7429 * rather whenever an application invokes the getdents(2) system call
7430 * on a directory already in our cache.
7431 */
7432int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7433 bool plus)
7434{
7435 unsigned int savep;
7436 uint32_t bitmap[3] = {0};
7437 uint32_t len;
7438 uint64_t new_cookie;
7439 __be32 *p = xdr_inline_decode(xdr, 4);
7440 if (unlikely(!p))
7441 return -EAGAIN;
7442 if (*p == xdr_zero) {
7443 p = xdr_inline_decode(xdr, 4);
7444 if (unlikely(!p))
7445 return -EAGAIN;
7446 if (*p == xdr_zero)
7447 return -EAGAIN;
7448 entry->eof = 1;
7449 return -EBADCOOKIE;
7450 }
7451
7452 p = xdr_inline_decode(xdr, 12);
7453 if (unlikely(!p))
7454 return -EAGAIN;
7455 p = xdr_decode_hyper(p, &new_cookie);
7456 entry->len = be32_to_cpup(p);
7457
7458 p = xdr_inline_decode(xdr, entry->len);
7459 if (unlikely(!p))
7460 return -EAGAIN;
7461 entry->name = (const char *) p;
7462
7463 /*
7464 * In case the server doesn't return an inode number,
7465 * we fake one here. (We don't use inode number 0,
7466 * since glibc seems to choke on it...)
7467 */
7468 entry->ino = 1;
7469 entry->fattr->valid = 0;
7470
7471 if (decode_attr_bitmap(xdr, bitmap) < 0)
7472 return -EAGAIN;
7473
7474 if (decode_attr_length(xdr, &len, &savep) < 0)
7475 return -EAGAIN;
7476
7477 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7478 NULL, entry->label, entry->server) < 0)
7479 return -EAGAIN;
7480 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7481 entry->ino = entry->fattr->mounted_on_fileid;
7482 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7483 entry->ino = entry->fattr->fileid;
7484
7485 entry->d_type = DT_UNKNOWN;
7486 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7487 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7488
7489 entry->prev_cookie = entry->cookie;
7490 entry->cookie = new_cookie;
7491
7492 return 0;
7493}
7494
7495/*
7496 * We need to translate between nfs status return values and
7497 * the local errno values which may not be the same.
7498 */
7499static struct {
7500 int stat;
7501 int errno;
7502} nfs_errtbl[] = {
7503 { NFS4_OK, 0 },
7504 { NFS4ERR_PERM, -EPERM },
7505 { NFS4ERR_NOENT, -ENOENT },
7506 { NFS4ERR_IO, -errno_NFSERR_IO},
7507 { NFS4ERR_NXIO, -ENXIO },
7508 { NFS4ERR_ACCESS, -EACCES },
7509 { NFS4ERR_EXIST, -EEXIST },
7510 { NFS4ERR_XDEV, -EXDEV },
7511 { NFS4ERR_NOTDIR, -ENOTDIR },
7512 { NFS4ERR_ISDIR, -EISDIR },
7513 { NFS4ERR_INVAL, -EINVAL },
7514 { NFS4ERR_FBIG, -EFBIG },
7515 { NFS4ERR_NOSPC, -ENOSPC },
7516 { NFS4ERR_ROFS, -EROFS },
7517 { NFS4ERR_MLINK, -EMLINK },
7518 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7519 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7520 { NFS4ERR_DQUOT, -EDQUOT },
7521 { NFS4ERR_STALE, -ESTALE },
7522 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7523 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7524 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7525 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7526 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7527 { NFS4ERR_BADTYPE, -EBADTYPE },
7528 { NFS4ERR_LOCKED, -EAGAIN },
7529 { NFS4ERR_SYMLINK, -ELOOP },
7530 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7531 { NFS4ERR_DEADLOCK, -EDEADLK },
7532 { NFS4ERR_NOXATTR, -ENODATA },
7533 { NFS4ERR_XATTR2BIG, -E2BIG },
7534 { -1, -EIO }
7535};
7536
7537/*
7538 * Convert an NFS error code to a local one.
7539 * This one is used jointly by NFSv2 and NFSv3.
7540 */
7541static int
7542nfs4_stat_to_errno(int stat)
7543{
7544 int i;
7545 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7546 if (nfs_errtbl[i].stat == stat)
7547 return nfs_errtbl[i].errno;
7548 }
7549 if (stat <= 10000 || stat > 10100) {
7550 /* The server is looney tunes. */
7551 return -EREMOTEIO;
7552 }
7553 /* If we cannot translate the error, the recovery routines should
7554 * handle it.
7555 * Note: remaining NFSv4 error codes have values > 10000, so should
7556 * not conflict with native Linux error codes.
7557 */
7558 return -stat;
7559}
7560
7561#ifdef CONFIG_NFS_V4_2
7562#include "nfs42xdr.c"
7563#endif /* CONFIG_NFS_V4_2 */
7564
7565#define PROC(proc, argtype, restype) \
7566[NFSPROC4_CLNT_##proc] = { \
7567 .p_proc = NFSPROC4_COMPOUND, \
7568 .p_encode = nfs4_xdr_##argtype, \
7569 .p_decode = nfs4_xdr_##restype, \
7570 .p_arglen = NFS4_##argtype##_sz, \
7571 .p_replen = NFS4_##restype##_sz, \
7572 .p_statidx = NFSPROC4_CLNT_##proc, \
7573 .p_name = #proc, \
7574}
7575
7576#define STUB(proc) \
7577[NFSPROC4_CLNT_##proc] = { \
7578 .p_name = #proc, \
7579}
7580
7581#if defined(CONFIG_NFS_V4_1)
7582#define PROC41(proc, argtype, restype) \
7583 PROC(proc, argtype, restype)
7584#else
7585#define PROC41(proc, argtype, restype) \
7586 STUB(proc)
7587#endif
7588
7589#if defined(CONFIG_NFS_V4_2)
7590#define PROC42(proc, argtype, restype) \
7591 PROC(proc, argtype, restype)
7592#else
7593#define PROC42(proc, argtype, restype) \
7594 STUB(proc)
7595#endif
7596
7597const struct rpc_procinfo nfs4_procedures[] = {
7598 PROC(READ, enc_read, dec_read),
7599 PROC(WRITE, enc_write, dec_write),
7600 PROC(COMMIT, enc_commit, dec_commit),
7601 PROC(OPEN, enc_open, dec_open),
7602 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7603 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7604 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7605 PROC(CLOSE, enc_close, dec_close),
7606 PROC(SETATTR, enc_setattr, dec_setattr),
7607 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7608 PROC(RENEW, enc_renew, dec_renew),
7609 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7610 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7611 PROC(LOCK, enc_lock, dec_lock),
7612 PROC(LOCKT, enc_lockt, dec_lockt),
7613 PROC(LOCKU, enc_locku, dec_locku),
7614 PROC(ACCESS, enc_access, dec_access),
7615 PROC(GETATTR, enc_getattr, dec_getattr),
7616 PROC(LOOKUP, enc_lookup, dec_lookup),
7617 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7618 PROC(REMOVE, enc_remove, dec_remove),
7619 PROC(RENAME, enc_rename, dec_rename),
7620 PROC(LINK, enc_link, dec_link),
7621 PROC(SYMLINK, enc_symlink, dec_symlink),
7622 PROC(CREATE, enc_create, dec_create),
7623 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7624 PROC(STATFS, enc_statfs, dec_statfs),
7625 PROC(READLINK, enc_readlink, dec_readlink),
7626 PROC(READDIR, enc_readdir, dec_readdir),
7627 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7628 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7629 PROC(GETACL, enc_getacl, dec_getacl),
7630 PROC(SETACL, enc_setacl, dec_setacl),
7631 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7632 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7633 PROC(SECINFO, enc_secinfo, dec_secinfo),
7634 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7635 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7636 PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
7637 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7638 PROC41(SEQUENCE, enc_sequence, dec_sequence),
7639 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7640 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
7641 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7642 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),
7643 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7644 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7645 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7646 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7647 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7648 STUB(GETDEVICELIST),
7649 PROC41(BIND_CONN_TO_SESSION,
7650 enc_bind_conn_to_session, dec_bind_conn_to_session),
7651 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid),
7652 PROC42(SEEK, enc_seek, dec_seek),
7653 PROC42(ALLOCATE, enc_allocate, dec_allocate),
7654 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate),
7655 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7656 PROC42(CLONE, enc_clone, dec_clone),
7657 PROC42(COPY, enc_copy, dec_copy),
7658 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
7659 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify),
7660 PROC(LOOKUPP, enc_lookupp, dec_lookupp),
7661 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror),
7662 PROC42(GETXATTR, enc_getxattr, dec_getxattr),
7663 PROC42(SETXATTR, enc_setxattr, dec_setxattr),
7664 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs),
7665 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr),
7666 PROC42(READ_PLUS, enc_read_plus, dec_read_plus),
7667};
7668
7669static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7670const struct rpc_version nfs_version4 = {
7671 .number = 4,
7672 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7673 .procs = nfs4_procedures,
7674 .counts = nfs_version4_counts,
7675};
1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/module.h>
48#include <linux/utsname.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/sunrpc/msg_prot.h>
51#include <linux/sunrpc/gss_api.h>
52#include <linux/nfs.h>
53#include <linux/nfs4.h>
54#include <linux/nfs_fs.h>
55
56#include "nfs4_fs.h"
57#include "internal.h"
58#include "nfs4idmap.h"
59#include "nfs4session.h"
60#include "pnfs.h"
61#include "netns.h"
62
63#define NFSDBG_FACILITY NFSDBG_XDR
64
65/* Mapping from NFS error code to "errno" error code. */
66#define errno_NFSERR_IO EIO
67
68static int nfs4_stat_to_errno(int);
69
70/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
71#ifdef DEBUG
72#define NFS4_MAXTAGLEN 20
73#else
74#define NFS4_MAXTAGLEN 0
75#endif
76
77/* lock,open owner id:
78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
79 */
80#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
81#define lock_owner_id_maxsz (1 + 1 + 4)
82#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
83#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85#define op_encode_hdr_maxsz (1)
86#define op_decode_hdr_maxsz (2)
87#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
92 (NFS4_FHSIZE >> 2))
93#define decode_putfh_maxsz (op_decode_hdr_maxsz)
94#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96#define encode_getfh_maxsz (op_encode_hdr_maxsz)
97#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
99#define nfs4_fattr_bitmap_maxsz 4
100#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
101#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
103#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105#ifdef CONFIG_NFS_V4_SECURITY_LABEL
106/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
107#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
108#else
109#define nfs4_label_maxsz 0
110#endif
111/* We support only one layout type per file system */
112#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
113/* This is based on getfattr, which uses the most attributes: */
114#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
115 3 + 3 + 3 + nfs4_owner_maxsz + \
116 nfs4_group_maxsz + nfs4_label_maxsz + \
117 decode_mdsthreshold_maxsz))
118#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
119 nfs4_fattr_value_maxsz)
120#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
121#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
122 1 + 2 + 1 + \
123 nfs4_owner_maxsz + \
124 nfs4_group_maxsz + \
125 nfs4_label_maxsz + \
126 4 + 4)
127#define encode_savefh_maxsz (op_encode_hdr_maxsz)
128#define decode_savefh_maxsz (op_decode_hdr_maxsz)
129#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
130#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
131#define encode_fsinfo_maxsz (encode_getattr_maxsz)
132/* The 5 accounts for the PNFS attributes, and assumes that at most three
133 * layout types will be returned.
134 */
135#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
136 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
137#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
138#define decode_renew_maxsz (op_decode_hdr_maxsz)
139#define encode_setclientid_maxsz \
140 (op_encode_hdr_maxsz + \
141 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
142 /* client name */ \
143 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
144 1 /* sc_prog */ + \
145 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
146 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
147 1) /* sc_cb_ident */
148#define decode_setclientid_maxsz \
149 (op_decode_hdr_maxsz + \
150 2 /* clientid */ + \
151 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
152 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
153 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
154#define encode_setclientid_confirm_maxsz \
155 (op_encode_hdr_maxsz + \
156 3 + (NFS4_VERIFIER_SIZE >> 2))
157#define decode_setclientid_confirm_maxsz \
158 (op_decode_hdr_maxsz)
159#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
160#define decode_lookup_maxsz (op_decode_hdr_maxsz)
161#define encode_share_access_maxsz \
162 (2)
163#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
164#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
165#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
166#define encode_open_maxsz (op_encode_hdr_maxsz + \
167 2 + encode_share_access_maxsz + 2 + \
168 open_owner_id_maxsz + \
169 encode_opentype_maxsz + \
170 encode_claim_null_maxsz)
171#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
172#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
173 decode_ace_maxsz)
174#define decode_change_info_maxsz (5)
175#define decode_open_maxsz (op_decode_hdr_maxsz + \
176 decode_stateid_maxsz + \
177 decode_change_info_maxsz + 1 + \
178 nfs4_fattr_bitmap_maxsz + \
179 decode_delegation_maxsz)
180#define encode_open_confirm_maxsz \
181 (op_encode_hdr_maxsz + \
182 encode_stateid_maxsz + 1)
183#define decode_open_confirm_maxsz \
184 (op_decode_hdr_maxsz + \
185 decode_stateid_maxsz)
186#define encode_open_downgrade_maxsz \
187 (op_encode_hdr_maxsz + \
188 encode_stateid_maxsz + 1 + \
189 encode_share_access_maxsz)
190#define decode_open_downgrade_maxsz \
191 (op_decode_hdr_maxsz + \
192 decode_stateid_maxsz)
193#define encode_close_maxsz (op_encode_hdr_maxsz + \
194 1 + encode_stateid_maxsz)
195#define decode_close_maxsz (op_decode_hdr_maxsz + \
196 decode_stateid_maxsz)
197#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
198 encode_stateid_maxsz + \
199 encode_attrs_maxsz)
200#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
201 nfs4_fattr_bitmap_maxsz)
202#define encode_read_maxsz (op_encode_hdr_maxsz + \
203 encode_stateid_maxsz + 3)
204#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
205#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
206 2 + encode_verifier_maxsz + 5 + \
207 nfs4_label_maxsz)
208#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
209 decode_verifier_maxsz)
210#define encode_readlink_maxsz (op_encode_hdr_maxsz)
211#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
212#define encode_write_maxsz (op_encode_hdr_maxsz + \
213 encode_stateid_maxsz + 4)
214#define decode_write_maxsz (op_decode_hdr_maxsz + \
215 2 + decode_verifier_maxsz)
216#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
217#define decode_commit_maxsz (op_decode_hdr_maxsz + \
218 decode_verifier_maxsz)
219#define encode_remove_maxsz (op_encode_hdr_maxsz + \
220 nfs4_name_maxsz)
221#define decode_remove_maxsz (op_decode_hdr_maxsz + \
222 decode_change_info_maxsz)
223#define encode_rename_maxsz (op_encode_hdr_maxsz + \
224 2 * nfs4_name_maxsz)
225#define decode_rename_maxsz (op_decode_hdr_maxsz + \
226 decode_change_info_maxsz + \
227 decode_change_info_maxsz)
228#define encode_link_maxsz (op_encode_hdr_maxsz + \
229 nfs4_name_maxsz)
230#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
231#define encode_lockowner_maxsz (7)
232#define encode_lock_maxsz (op_encode_hdr_maxsz + \
233 7 + \
234 1 + encode_stateid_maxsz + 1 + \
235 encode_lockowner_maxsz)
236#define decode_lock_denied_maxsz \
237 (8 + decode_lockowner_maxsz)
238#define decode_lock_maxsz (op_decode_hdr_maxsz + \
239 decode_lock_denied_maxsz)
240#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
241 encode_lockowner_maxsz)
242#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
243 decode_lock_denied_maxsz)
244#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
245 encode_stateid_maxsz + \
246 4)
247#define decode_locku_maxsz (op_decode_hdr_maxsz + \
248 decode_stateid_maxsz)
249#define encode_release_lockowner_maxsz \
250 (op_encode_hdr_maxsz + \
251 encode_lockowner_maxsz)
252#define decode_release_lockowner_maxsz \
253 (op_decode_hdr_maxsz)
254#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
255#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
256#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
257 1 + nfs4_name_maxsz + \
258 1 + \
259 nfs4_fattr_maxsz)
260#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
261#define encode_create_maxsz (op_encode_hdr_maxsz + \
262 1 + 2 + nfs4_name_maxsz + \
263 encode_attrs_maxsz)
264#define decode_create_maxsz (op_decode_hdr_maxsz + \
265 decode_change_info_maxsz + \
266 nfs4_fattr_bitmap_maxsz)
267#define encode_statfs_maxsz (encode_getattr_maxsz)
268#define decode_statfs_maxsz (decode_getattr_maxsz)
269#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
270#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
271#define encode_getacl_maxsz (encode_getattr_maxsz)
272#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
273 nfs4_fattr_bitmap_maxsz + 1)
274#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
275 encode_stateid_maxsz + 3)
276#define decode_setacl_maxsz (decode_setattr_maxsz)
277#define encode_fs_locations_maxsz \
278 (encode_getattr_maxsz)
279#define decode_fs_locations_maxsz \
280 (0)
281#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
282#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
283
284#if defined(CONFIG_NFS_V4_1)
285#define NFS4_MAX_MACHINE_NAME_LEN (64)
286#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
287 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
288
289#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
290 encode_verifier_maxsz + \
291 1 /* co_ownerid.len */ + \
292 /* eia_clientowner */ \
293 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
294 1 /* flags */ + \
295 1 /* spa_how */ + \
296 /* max is SP4_MACH_CRED (for now) */ + \
297 1 + NFS4_OP_MAP_NUM_WORDS + \
298 1 + NFS4_OP_MAP_NUM_WORDS + \
299 1 /* implementation id array of size 1 */ + \
300 1 /* nii_domain */ + \
301 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
302 1 /* nii_name */ + \
303 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
304 3 /* nii_date */)
305#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
306 2 /* eir_clientid */ + \
307 1 /* eir_sequenceid */ + \
308 1 /* eir_flags */ + \
309 1 /* spr_how */ + \
310 /* max is SP4_MACH_CRED (for now) */ + \
311 1 + NFS4_OP_MAP_NUM_WORDS + \
312 1 + NFS4_OP_MAP_NUM_WORDS + \
313 2 /* eir_server_owner.so_minor_id */ + \
314 /* eir_server_owner.so_major_id<> */ \
315 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
316 /* eir_server_scope<> */ \
317 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
318 1 /* eir_server_impl_id array length */ + \
319 1 /* nii_domain */ + \
320 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
321 1 /* nii_name */ + \
322 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
323 3 /* nii_date */)
324#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
325#define decode_channel_attrs_maxsz (6 + \
326 1 /* ca_rdma_ird.len */ + \
327 1 /* ca_rdma_ird */)
328#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
329 2 /* csa_clientid */ + \
330 1 /* csa_sequence */ + \
331 1 /* csa_flags */ + \
332 encode_channel_attrs_maxsz + \
333 encode_channel_attrs_maxsz + \
334 1 /* csa_cb_program */ + \
335 1 /* csa_sec_parms.len (1) */ + \
336 1 /* cb_secflavor (AUTH_SYS) */ + \
337 1 /* stamp */ + \
338 1 /* machinename.len */ + \
339 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
340 1 /* uid */ + \
341 1 /* gid */ + \
342 1 /* gids.len (0) */)
343#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
344 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
345 1 /* csr_sequence */ + \
346 1 /* csr_flags */ + \
347 decode_channel_attrs_maxsz + \
348 decode_channel_attrs_maxsz)
349#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
350 /* bctsa_sessid */ \
351 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
352 1 /* bctsa_dir */ + \
353 1 /* bctsa_use_conn_in_rdma_mode */)
354#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
355 /* bctsr_sessid */ \
356 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
357 1 /* bctsr_dir */ + \
358 1 /* bctsr_use_conn_in_rdma_mode */)
359#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
360#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
361#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
362#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
363#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
364 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
365#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
366 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
367#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
368#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
369#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
370 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
371 1 /* layout type */ + \
372 1 /* maxcount */ + \
373 1 /* bitmap size */ + \
374 1 /* notification bitmap length */ + \
375 1 /* notification bitmap, word 0 */)
376#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
377 1 /* layout type */ + \
378 1 /* opaque devaddr4 length */ + \
379 /* devaddr4 payload is read into page */ \
380 1 /* notification bitmap length */ + \
381 1 /* notification bitmap, word 0 */)
382#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
383 encode_stateid_maxsz)
384#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
385 decode_stateid_maxsz + \
386 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
387#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
388 2 /* offset */ + \
389 2 /* length */ + \
390 1 /* reclaim */ + \
391 encode_stateid_maxsz + \
392 1 /* new offset (true) */ + \
393 2 /* last byte written */ + \
394 1 /* nt_timechanged (false) */ + \
395 1 /* layoutupdate4 layout type */ + \
396 1 /* layoutupdate4 opaqueue len */)
397 /* the actual content of layoutupdate4 should
398 be allocated by drivers and spliced in
399 using xdr_write_pages */
400#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
401#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
402 encode_stateid_maxsz + \
403 1 + \
404 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
405#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
406 1 + decode_stateid_maxsz)
407#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
408#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
409#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
410 XDR_QUADLEN(NFS4_STATEID_SIZE))
411#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
412#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
413 XDR_QUADLEN(NFS4_STATEID_SIZE))
414#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
415#else /* CONFIG_NFS_V4_1 */
416#define encode_sequence_maxsz 0
417#define decode_sequence_maxsz 0
418#endif /* CONFIG_NFS_V4_1 */
419
420#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
421#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
422#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
423 encode_sequence_maxsz + \
424 encode_putfh_maxsz + \
425 encode_read_maxsz)
426#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
427 decode_sequence_maxsz + \
428 decode_putfh_maxsz + \
429 decode_read_maxsz)
430#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
431 encode_sequence_maxsz + \
432 encode_putfh_maxsz + \
433 encode_readlink_maxsz)
434#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
435 decode_sequence_maxsz + \
436 decode_putfh_maxsz + \
437 decode_readlink_maxsz)
438#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
439 encode_sequence_maxsz + \
440 encode_putfh_maxsz + \
441 encode_readdir_maxsz)
442#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
443 decode_sequence_maxsz + \
444 decode_putfh_maxsz + \
445 decode_readdir_maxsz)
446#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
447 encode_sequence_maxsz + \
448 encode_putfh_maxsz + \
449 encode_write_maxsz + \
450 encode_getattr_maxsz)
451#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
452 decode_sequence_maxsz + \
453 decode_putfh_maxsz + \
454 decode_write_maxsz + \
455 decode_getattr_maxsz)
456#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
457 encode_sequence_maxsz + \
458 encode_putfh_maxsz + \
459 encode_commit_maxsz)
460#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
461 decode_sequence_maxsz + \
462 decode_putfh_maxsz + \
463 decode_commit_maxsz)
464#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
465 encode_sequence_maxsz + \
466 encode_putfh_maxsz + \
467 encode_open_maxsz + \
468 encode_access_maxsz + \
469 encode_getfh_maxsz + \
470 encode_getattr_maxsz)
471#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
472 decode_sequence_maxsz + \
473 decode_putfh_maxsz + \
474 decode_open_maxsz + \
475 decode_access_maxsz + \
476 decode_getfh_maxsz + \
477 decode_getattr_maxsz)
478#define NFS4_enc_open_confirm_sz \
479 (compound_encode_hdr_maxsz + \
480 encode_putfh_maxsz + \
481 encode_open_confirm_maxsz)
482#define NFS4_dec_open_confirm_sz \
483 (compound_decode_hdr_maxsz + \
484 decode_putfh_maxsz + \
485 decode_open_confirm_maxsz)
486#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
487 encode_sequence_maxsz + \
488 encode_putfh_maxsz + \
489 encode_open_maxsz + \
490 encode_access_maxsz + \
491 encode_getattr_maxsz)
492#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
493 decode_sequence_maxsz + \
494 decode_putfh_maxsz + \
495 decode_open_maxsz + \
496 decode_access_maxsz + \
497 decode_getattr_maxsz)
498#define NFS4_enc_open_downgrade_sz \
499 (compound_encode_hdr_maxsz + \
500 encode_sequence_maxsz + \
501 encode_putfh_maxsz + \
502 encode_open_downgrade_maxsz + \
503 encode_getattr_maxsz)
504#define NFS4_dec_open_downgrade_sz \
505 (compound_decode_hdr_maxsz + \
506 decode_sequence_maxsz + \
507 decode_putfh_maxsz + \
508 decode_open_downgrade_maxsz + \
509 decode_getattr_maxsz)
510#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
511 encode_sequence_maxsz + \
512 encode_putfh_maxsz + \
513 encode_close_maxsz + \
514 encode_getattr_maxsz)
515#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
516 decode_sequence_maxsz + \
517 decode_putfh_maxsz + \
518 decode_close_maxsz + \
519 decode_getattr_maxsz)
520#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
521 encode_sequence_maxsz + \
522 encode_putfh_maxsz + \
523 encode_setattr_maxsz + \
524 encode_getattr_maxsz)
525#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
526 decode_sequence_maxsz + \
527 decode_putfh_maxsz + \
528 decode_setattr_maxsz + \
529 decode_getattr_maxsz)
530#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
531 encode_sequence_maxsz + \
532 encode_putfh_maxsz + \
533 encode_fsinfo_maxsz)
534#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
535 decode_sequence_maxsz + \
536 decode_putfh_maxsz + \
537 decode_fsinfo_maxsz)
538#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
539 encode_renew_maxsz)
540#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
541 decode_renew_maxsz)
542#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
543 encode_setclientid_maxsz)
544#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
545 decode_setclientid_maxsz)
546#define NFS4_enc_setclientid_confirm_sz \
547 (compound_encode_hdr_maxsz + \
548 encode_setclientid_confirm_maxsz)
549#define NFS4_dec_setclientid_confirm_sz \
550 (compound_decode_hdr_maxsz + \
551 decode_setclientid_confirm_maxsz)
552#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
553 encode_sequence_maxsz + \
554 encode_putfh_maxsz + \
555 encode_lock_maxsz)
556#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
557 decode_sequence_maxsz + \
558 decode_putfh_maxsz + \
559 decode_lock_maxsz)
560#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
561 encode_sequence_maxsz + \
562 encode_putfh_maxsz + \
563 encode_lockt_maxsz)
564#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
565 decode_sequence_maxsz + \
566 decode_putfh_maxsz + \
567 decode_lockt_maxsz)
568#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
569 encode_sequence_maxsz + \
570 encode_putfh_maxsz + \
571 encode_locku_maxsz)
572#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
573 decode_sequence_maxsz + \
574 decode_putfh_maxsz + \
575 decode_locku_maxsz)
576#define NFS4_enc_release_lockowner_sz \
577 (compound_encode_hdr_maxsz + \
578 encode_lockowner_maxsz)
579#define NFS4_dec_release_lockowner_sz \
580 (compound_decode_hdr_maxsz + \
581 decode_lockowner_maxsz)
582#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
583 encode_sequence_maxsz + \
584 encode_putfh_maxsz + \
585 encode_access_maxsz + \
586 encode_getattr_maxsz)
587#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
588 decode_sequence_maxsz + \
589 decode_putfh_maxsz + \
590 decode_access_maxsz + \
591 decode_getattr_maxsz)
592#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
593 encode_sequence_maxsz + \
594 encode_putfh_maxsz + \
595 encode_getattr_maxsz + \
596 encode_renew_maxsz)
597#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
598 decode_sequence_maxsz + \
599 decode_putfh_maxsz + \
600 decode_getattr_maxsz + \
601 decode_renew_maxsz)
602#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
603 encode_sequence_maxsz + \
604 encode_putfh_maxsz + \
605 encode_lookup_maxsz + \
606 encode_getattr_maxsz + \
607 encode_getfh_maxsz)
608#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
609 decode_sequence_maxsz + \
610 decode_putfh_maxsz + \
611 decode_lookup_maxsz + \
612 decode_getattr_maxsz + \
613 decode_getfh_maxsz)
614#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
615 encode_sequence_maxsz + \
616 encode_putrootfh_maxsz + \
617 encode_getattr_maxsz + \
618 encode_getfh_maxsz)
619#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
620 decode_sequence_maxsz + \
621 decode_putrootfh_maxsz + \
622 decode_getattr_maxsz + \
623 decode_getfh_maxsz)
624#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
625 encode_sequence_maxsz + \
626 encode_putfh_maxsz + \
627 encode_remove_maxsz)
628#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
629 decode_sequence_maxsz + \
630 decode_putfh_maxsz + \
631 decode_remove_maxsz)
632#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
633 encode_sequence_maxsz + \
634 encode_putfh_maxsz + \
635 encode_savefh_maxsz + \
636 encode_putfh_maxsz + \
637 encode_rename_maxsz)
638#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
639 decode_sequence_maxsz + \
640 decode_putfh_maxsz + \
641 decode_savefh_maxsz + \
642 decode_putfh_maxsz + \
643 decode_rename_maxsz)
644#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
645 encode_sequence_maxsz + \
646 encode_putfh_maxsz + \
647 encode_savefh_maxsz + \
648 encode_putfh_maxsz + \
649 encode_link_maxsz + \
650 encode_restorefh_maxsz + \
651 encode_getattr_maxsz)
652#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
653 decode_sequence_maxsz + \
654 decode_putfh_maxsz + \
655 decode_savefh_maxsz + \
656 decode_putfh_maxsz + \
657 decode_link_maxsz + \
658 decode_restorefh_maxsz + \
659 decode_getattr_maxsz)
660#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
661 encode_sequence_maxsz + \
662 encode_putfh_maxsz + \
663 encode_symlink_maxsz + \
664 encode_getattr_maxsz + \
665 encode_getfh_maxsz)
666#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
667 decode_sequence_maxsz + \
668 decode_putfh_maxsz + \
669 decode_symlink_maxsz + \
670 decode_getattr_maxsz + \
671 decode_getfh_maxsz)
672#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
673 encode_sequence_maxsz + \
674 encode_putfh_maxsz + \
675 encode_create_maxsz + \
676 encode_getfh_maxsz + \
677 encode_getattr_maxsz)
678#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
679 decode_sequence_maxsz + \
680 decode_putfh_maxsz + \
681 decode_create_maxsz + \
682 decode_getfh_maxsz + \
683 decode_getattr_maxsz)
684#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
685 encode_sequence_maxsz + \
686 encode_putfh_maxsz + \
687 encode_getattr_maxsz)
688#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
689 decode_sequence_maxsz + \
690 decode_putfh_maxsz + \
691 decode_getattr_maxsz)
692#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
693 encode_sequence_maxsz + \
694 encode_putfh_maxsz + \
695 encode_statfs_maxsz)
696#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
697 decode_sequence_maxsz + \
698 decode_putfh_maxsz + \
699 decode_statfs_maxsz)
700#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
701 encode_sequence_maxsz + \
702 encode_putfh_maxsz + \
703 encode_getattr_maxsz)
704#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
705 decode_sequence_maxsz + \
706 decode_putfh_maxsz + \
707 decode_getattr_maxsz)
708#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
709 encode_sequence_maxsz + \
710 encode_putfh_maxsz + \
711 encode_delegreturn_maxsz + \
712 encode_getattr_maxsz)
713#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
714 decode_sequence_maxsz + \
715 decode_delegreturn_maxsz + \
716 decode_getattr_maxsz)
717#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
718 encode_sequence_maxsz + \
719 encode_putfh_maxsz + \
720 encode_getacl_maxsz)
721#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
722 decode_sequence_maxsz + \
723 decode_putfh_maxsz + \
724 decode_getacl_maxsz)
725#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
726 encode_sequence_maxsz + \
727 encode_putfh_maxsz + \
728 encode_setacl_maxsz)
729#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
730 decode_sequence_maxsz + \
731 decode_putfh_maxsz + \
732 decode_setacl_maxsz)
733#define NFS4_enc_fs_locations_sz \
734 (compound_encode_hdr_maxsz + \
735 encode_sequence_maxsz + \
736 encode_putfh_maxsz + \
737 encode_lookup_maxsz + \
738 encode_fs_locations_maxsz + \
739 encode_renew_maxsz)
740#define NFS4_dec_fs_locations_sz \
741 (compound_decode_hdr_maxsz + \
742 decode_sequence_maxsz + \
743 decode_putfh_maxsz + \
744 decode_lookup_maxsz + \
745 decode_fs_locations_maxsz + \
746 decode_renew_maxsz)
747#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
748 encode_sequence_maxsz + \
749 encode_putfh_maxsz + \
750 encode_secinfo_maxsz)
751#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
752 decode_sequence_maxsz + \
753 decode_putfh_maxsz + \
754 decode_secinfo_maxsz)
755#define NFS4_enc_fsid_present_sz \
756 (compound_encode_hdr_maxsz + \
757 encode_sequence_maxsz + \
758 encode_putfh_maxsz + \
759 encode_getfh_maxsz + \
760 encode_renew_maxsz)
761#define NFS4_dec_fsid_present_sz \
762 (compound_decode_hdr_maxsz + \
763 decode_sequence_maxsz + \
764 decode_putfh_maxsz + \
765 decode_getfh_maxsz + \
766 decode_renew_maxsz)
767#if defined(CONFIG_NFS_V4_1)
768#define NFS4_enc_bind_conn_to_session_sz \
769 (compound_encode_hdr_maxsz + \
770 encode_bind_conn_to_session_maxsz)
771#define NFS4_dec_bind_conn_to_session_sz \
772 (compound_decode_hdr_maxsz + \
773 decode_bind_conn_to_session_maxsz)
774#define NFS4_enc_exchange_id_sz \
775 (compound_encode_hdr_maxsz + \
776 encode_exchange_id_maxsz)
777#define NFS4_dec_exchange_id_sz \
778 (compound_decode_hdr_maxsz + \
779 decode_exchange_id_maxsz)
780#define NFS4_enc_create_session_sz \
781 (compound_encode_hdr_maxsz + \
782 encode_create_session_maxsz)
783#define NFS4_dec_create_session_sz \
784 (compound_decode_hdr_maxsz + \
785 decode_create_session_maxsz)
786#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
787 encode_destroy_session_maxsz)
788#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
789 decode_destroy_session_maxsz)
790#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
791 encode_destroy_clientid_maxsz)
792#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
793 decode_destroy_clientid_maxsz)
794#define NFS4_enc_sequence_sz \
795 (compound_decode_hdr_maxsz + \
796 encode_sequence_maxsz)
797#define NFS4_dec_sequence_sz \
798 (compound_decode_hdr_maxsz + \
799 decode_sequence_maxsz)
800#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
801 encode_sequence_maxsz + \
802 encode_putrootfh_maxsz + \
803 encode_fsinfo_maxsz)
804#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
805 decode_sequence_maxsz + \
806 decode_putrootfh_maxsz + \
807 decode_fsinfo_maxsz)
808#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
809 encode_sequence_maxsz + \
810 encode_reclaim_complete_maxsz)
811#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
812 decode_sequence_maxsz + \
813 decode_reclaim_complete_maxsz)
814#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
815 encode_sequence_maxsz +\
816 encode_getdeviceinfo_maxsz)
817#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
818 decode_sequence_maxsz + \
819 decode_getdeviceinfo_maxsz)
820#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz + \
822 encode_putfh_maxsz + \
823 encode_layoutget_maxsz)
824#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putfh_maxsz + \
827 decode_layoutget_maxsz)
828#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
829 encode_sequence_maxsz +\
830 encode_putfh_maxsz + \
831 encode_layoutcommit_maxsz + \
832 encode_getattr_maxsz)
833#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
834 decode_sequence_maxsz + \
835 decode_putfh_maxsz + \
836 decode_layoutcommit_maxsz + \
837 decode_getattr_maxsz)
838#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
839 encode_sequence_maxsz + \
840 encode_putfh_maxsz + \
841 encode_layoutreturn_maxsz)
842#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
843 decode_sequence_maxsz + \
844 decode_putfh_maxsz + \
845 decode_layoutreturn_maxsz)
846#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
847 encode_sequence_maxsz + \
848 encode_putrootfh_maxsz +\
849 encode_secinfo_no_name_maxsz)
850#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz + \
852 decode_putrootfh_maxsz + \
853 decode_secinfo_no_name_maxsz)
854#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
855 encode_sequence_maxsz + \
856 encode_test_stateid_maxsz)
857#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
858 decode_sequence_maxsz + \
859 decode_test_stateid_maxsz)
860#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
861 encode_sequence_maxsz + \
862 encode_free_stateid_maxsz)
863#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
864 decode_sequence_maxsz + \
865 decode_free_stateid_maxsz)
866
867const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
868 compound_encode_hdr_maxsz +
869 encode_sequence_maxsz +
870 encode_putfh_maxsz +
871 encode_getattr_maxsz) *
872 XDR_UNIT);
873
874const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
875 compound_decode_hdr_maxsz +
876 decode_sequence_maxsz +
877 decode_putfh_maxsz) *
878 XDR_UNIT);
879
880const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
881 compound_decode_hdr_maxsz +
882 decode_sequence_maxsz) *
883 XDR_UNIT);
884EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
885#endif /* CONFIG_NFS_V4_1 */
886
887static const umode_t nfs_type2fmt[] = {
888 [NF4BAD] = 0,
889 [NF4REG] = S_IFREG,
890 [NF4DIR] = S_IFDIR,
891 [NF4BLK] = S_IFBLK,
892 [NF4CHR] = S_IFCHR,
893 [NF4LNK] = S_IFLNK,
894 [NF4SOCK] = S_IFSOCK,
895 [NF4FIFO] = S_IFIFO,
896 [NF4ATTRDIR] = 0,
897 [NF4NAMEDATTR] = 0,
898};
899
900struct compound_hdr {
901 int32_t status;
902 uint32_t nops;
903 __be32 * nops_p;
904 uint32_t taglen;
905 char * tag;
906 uint32_t replen; /* expected reply words */
907 u32 minorversion;
908};
909
910static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
911{
912 __be32 *p = xdr_reserve_space(xdr, nbytes);
913 BUG_ON(!p);
914 return p;
915}
916
917static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
918{
919 __be32 *p;
920
921 p = xdr_reserve_space(xdr, len);
922 xdr_encode_opaque_fixed(p, buf, len);
923}
924
925static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
926{
927 __be32 *p;
928
929 p = reserve_space(xdr, 4 + len);
930 xdr_encode_opaque(p, str, len);
931}
932
933static void encode_uint32(struct xdr_stream *xdr, u32 n)
934{
935 __be32 *p;
936
937 p = reserve_space(xdr, 4);
938 *p = cpu_to_be32(n);
939}
940
941static void encode_uint64(struct xdr_stream *xdr, u64 n)
942{
943 __be32 *p;
944
945 p = reserve_space(xdr, 8);
946 xdr_encode_hyper(p, n);
947}
948
949static void encode_nfs4_seqid(struct xdr_stream *xdr,
950 const struct nfs_seqid *seqid)
951{
952 if (seqid != NULL)
953 encode_uint32(xdr, seqid->sequence->counter);
954 else
955 encode_uint32(xdr, 0);
956}
957
958static void encode_compound_hdr(struct xdr_stream *xdr,
959 struct rpc_rqst *req,
960 struct compound_hdr *hdr)
961{
962 __be32 *p;
963 struct rpc_auth *auth = req->rq_cred->cr_auth;
964
965 /* initialize running count of expected bytes in reply.
966 * NOTE: the replied tag SHOULD be the same is the one sent,
967 * but this is not required as a MUST for the server to do so. */
968 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
969
970 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
971 encode_string(xdr, hdr->taglen, hdr->tag);
972 p = reserve_space(xdr, 8);
973 *p++ = cpu_to_be32(hdr->minorversion);
974 hdr->nops_p = p;
975 *p = cpu_to_be32(hdr->nops);
976}
977
978static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
979 uint32_t replen,
980 struct compound_hdr *hdr)
981{
982 encode_uint32(xdr, op);
983 hdr->nops++;
984 hdr->replen += replen;
985}
986
987static void encode_nops(struct compound_hdr *hdr)
988{
989 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
990 *hdr->nops_p = htonl(hdr->nops);
991}
992
993static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
994{
995 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
996}
997
998static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
999{
1000 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1001}
1002
1003static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1004 const struct nfs4_label *label,
1005 const struct nfs_server *server,
1006 bool excl_check)
1007{
1008 char owner_name[IDMAP_NAMESZ];
1009 char owner_group[IDMAP_NAMESZ];
1010 int owner_namelen = 0;
1011 int owner_grouplen = 0;
1012 __be32 *p;
1013 unsigned i;
1014 uint32_t len = 0;
1015 uint32_t bmval_len;
1016 uint32_t bmval[3] = { 0 };
1017
1018 /*
1019 * We reserve enough space to write the entire attribute buffer at once.
1020 * In the worst-case, this would be
1021 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
1022 * = 40 bytes, plus any contribution from variable-length fields
1023 * such as owner/group.
1024 */
1025 if (iap->ia_valid & ATTR_SIZE) {
1026 bmval[0] |= FATTR4_WORD0_SIZE;
1027 len += 8;
1028 }
1029 if (iap->ia_valid & ATTR_MODE) {
1030 bmval[1] |= FATTR4_WORD1_MODE;
1031 len += 4;
1032 }
1033 if (iap->ia_valid & ATTR_UID) {
1034 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1035 if (owner_namelen < 0) {
1036 dprintk("nfs: couldn't resolve uid %d to string\n",
1037 from_kuid(&init_user_ns, iap->ia_uid));
1038 /* XXX */
1039 strcpy(owner_name, "nobody");
1040 owner_namelen = sizeof("nobody") - 1;
1041 /* goto out; */
1042 }
1043 bmval[1] |= FATTR4_WORD1_OWNER;
1044 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1045 }
1046 if (iap->ia_valid & ATTR_GID) {
1047 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1048 if (owner_grouplen < 0) {
1049 dprintk("nfs: couldn't resolve gid %d to string\n",
1050 from_kgid(&init_user_ns, iap->ia_gid));
1051 strcpy(owner_group, "nobody");
1052 owner_grouplen = sizeof("nobody") - 1;
1053 /* goto out; */
1054 }
1055 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1056 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1057 }
1058 if (iap->ia_valid & ATTR_ATIME_SET) {
1059 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1060 len += 16;
1061 } else if (iap->ia_valid & ATTR_ATIME) {
1062 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1063 len += 4;
1064 }
1065 if (iap->ia_valid & ATTR_MTIME_SET) {
1066 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1067 len += 16;
1068 } else if (iap->ia_valid & ATTR_MTIME) {
1069 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1070 len += 4;
1071 }
1072
1073 if (excl_check) {
1074 const u32 *excl_bmval = server->exclcreat_bitmask;
1075 bmval[0] &= excl_bmval[0];
1076 bmval[1] &= excl_bmval[1];
1077 bmval[2] &= excl_bmval[2];
1078
1079 if (!(excl_bmval[2] & FATTR4_WORD2_SECURITY_LABEL))
1080 label = NULL;
1081 }
1082
1083 if (label) {
1084 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1085 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1086 }
1087
1088 if (bmval[2] != 0)
1089 bmval_len = 3;
1090 else if (bmval[1] != 0)
1091 bmval_len = 2;
1092 else
1093 bmval_len = 1;
1094
1095 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
1096
1097 *p++ = cpu_to_be32(bmval_len);
1098 for (i = 0; i < bmval_len; i++)
1099 *p++ = cpu_to_be32(bmval[i]);
1100 *p++ = cpu_to_be32(len);
1101
1102 if (bmval[0] & FATTR4_WORD0_SIZE)
1103 p = xdr_encode_hyper(p, iap->ia_size);
1104 if (bmval[1] & FATTR4_WORD1_MODE)
1105 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1106 if (bmval[1] & FATTR4_WORD1_OWNER)
1107 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1108 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1109 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1110 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1111 if (iap->ia_valid & ATTR_ATIME_SET) {
1112 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1113 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1114 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1115 } else
1116 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1117 }
1118 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1119 if (iap->ia_valid & ATTR_MTIME_SET) {
1120 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1121 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1122 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1123 } else
1124 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1125 }
1126 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
1127 *p++ = cpu_to_be32(label->lfs);
1128 *p++ = cpu_to_be32(label->pi);
1129 *p++ = cpu_to_be32(label->len);
1130 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1131 }
1132
1133/* out: */
1134}
1135
1136static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1137{
1138 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1139 encode_uint32(xdr, access);
1140}
1141
1142static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1143{
1144 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1145 encode_nfs4_seqid(xdr, arg->seqid);
1146 encode_nfs4_stateid(xdr, &arg->stateid);
1147}
1148
1149static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1150{
1151 __be32 *p;
1152
1153 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1154 p = reserve_space(xdr, 12);
1155 p = xdr_encode_hyper(p, args->offset);
1156 *p = cpu_to_be32(args->count);
1157}
1158
1159static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1160{
1161 __be32 *p;
1162
1163 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1164 encode_uint32(xdr, create->ftype);
1165
1166 switch (create->ftype) {
1167 case NF4LNK:
1168 p = reserve_space(xdr, 4);
1169 *p = cpu_to_be32(create->u.symlink.len);
1170 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1171 create->u.symlink.len);
1172 xdr->buf->flags |= XDRBUF_WRITE;
1173 break;
1174
1175 case NF4BLK: case NF4CHR:
1176 p = reserve_space(xdr, 8);
1177 *p++ = cpu_to_be32(create->u.device.specdata1);
1178 *p = cpu_to_be32(create->u.device.specdata2);
1179 break;
1180
1181 default:
1182 break;
1183 }
1184
1185 encode_string(xdr, create->name->len, create->name->name);
1186 encode_attrs(xdr, create->attrs, create->label, create->server, false);
1187}
1188
1189static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1190{
1191 __be32 *p;
1192
1193 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1194 p = reserve_space(xdr, 8);
1195 *p++ = cpu_to_be32(1);
1196 *p = cpu_to_be32(bitmap);
1197}
1198
1199static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1200{
1201 __be32 *p;
1202
1203 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1204 p = reserve_space(xdr, 12);
1205 *p++ = cpu_to_be32(2);
1206 *p++ = cpu_to_be32(bm0);
1207 *p = cpu_to_be32(bm1);
1208}
1209
1210static void
1211encode_getattr_three(struct xdr_stream *xdr,
1212 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1213 struct compound_hdr *hdr)
1214{
1215 __be32 *p;
1216
1217 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1218 if (bm2) {
1219 p = reserve_space(xdr, 16);
1220 *p++ = cpu_to_be32(3);
1221 *p++ = cpu_to_be32(bm0);
1222 *p++ = cpu_to_be32(bm1);
1223 *p = cpu_to_be32(bm2);
1224 } else if (bm1) {
1225 p = reserve_space(xdr, 12);
1226 *p++ = cpu_to_be32(2);
1227 *p++ = cpu_to_be32(bm0);
1228 *p = cpu_to_be32(bm1);
1229 } else {
1230 p = reserve_space(xdr, 8);
1231 *p++ = cpu_to_be32(1);
1232 *p = cpu_to_be32(bm0);
1233 }
1234}
1235
1236static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1237{
1238 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1239 bitmask[1] & nfs4_fattr_bitmap[1],
1240 bitmask[2] & nfs4_fattr_bitmap[2],
1241 hdr);
1242}
1243
1244static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1245 const u32 *open_bitmap,
1246 struct compound_hdr *hdr)
1247{
1248 encode_getattr_three(xdr,
1249 bitmask[0] & open_bitmap[0],
1250 bitmask[1] & open_bitmap[1],
1251 bitmask[2] & open_bitmap[2],
1252 hdr);
1253}
1254
1255static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1256{
1257 encode_getattr_three(xdr,
1258 bitmask[0] & nfs4_fsinfo_bitmap[0],
1259 bitmask[1] & nfs4_fsinfo_bitmap[1],
1260 bitmask[2] & nfs4_fsinfo_bitmap[2],
1261 hdr);
1262}
1263
1264static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1265{
1266 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1267 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1268}
1269
1270static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1271{
1272 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1273}
1274
1275static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1276{
1277 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1278 encode_string(xdr, name->len, name->name);
1279}
1280
1281static inline int nfs4_lock_type(struct file_lock *fl, int block)
1282{
1283 if (fl->fl_type == F_RDLCK)
1284 return block ? NFS4_READW_LT : NFS4_READ_LT;
1285 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1286}
1287
1288static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1289{
1290 if (fl->fl_end == OFFSET_MAX)
1291 return ~(uint64_t)0;
1292 return fl->fl_end - fl->fl_start + 1;
1293}
1294
1295static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1296{
1297 __be32 *p;
1298
1299 p = reserve_space(xdr, 32);
1300 p = xdr_encode_hyper(p, lowner->clientid);
1301 *p++ = cpu_to_be32(20);
1302 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1303 *p++ = cpu_to_be32(lowner->s_dev);
1304 xdr_encode_hyper(p, lowner->id);
1305}
1306
1307/*
1308 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1309 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1310 */
1311static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1312{
1313 __be32 *p;
1314
1315 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1316 p = reserve_space(xdr, 28);
1317 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1318 *p++ = cpu_to_be32(args->reclaim);
1319 p = xdr_encode_hyper(p, args->fl->fl_start);
1320 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1321 *p = cpu_to_be32(args->new_lock_owner);
1322 if (args->new_lock_owner){
1323 encode_nfs4_seqid(xdr, args->open_seqid);
1324 encode_nfs4_stateid(xdr, &args->open_stateid);
1325 encode_nfs4_seqid(xdr, args->lock_seqid);
1326 encode_lockowner(xdr, &args->lock_owner);
1327 }
1328 else {
1329 encode_nfs4_stateid(xdr, &args->lock_stateid);
1330 encode_nfs4_seqid(xdr, args->lock_seqid);
1331 }
1332}
1333
1334static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1335{
1336 __be32 *p;
1337
1338 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1339 p = reserve_space(xdr, 20);
1340 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1341 p = xdr_encode_hyper(p, args->fl->fl_start);
1342 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1343 encode_lockowner(xdr, &args->lock_owner);
1344}
1345
1346static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1347{
1348 __be32 *p;
1349
1350 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1351 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1352 encode_nfs4_seqid(xdr, args->seqid);
1353 encode_nfs4_stateid(xdr, &args->stateid);
1354 p = reserve_space(xdr, 16);
1355 p = xdr_encode_hyper(p, args->fl->fl_start);
1356 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1357}
1358
1359static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1360{
1361 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1362 encode_lockowner(xdr, lowner);
1363}
1364
1365static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1366{
1367 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1368 encode_string(xdr, name->len, name->name);
1369}
1370
1371static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1372{
1373 __be32 *p;
1374
1375 p = reserve_space(xdr, 8);
1376 *p++ = cpu_to_be32(share_access);
1377 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1378}
1379
1380static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1381{
1382 __be32 *p;
1383 /*
1384 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1385 * owner 4 = 32
1386 */
1387 encode_nfs4_seqid(xdr, arg->seqid);
1388 encode_share_access(xdr, arg->share_access);
1389 p = reserve_space(xdr, 36);
1390 p = xdr_encode_hyper(p, arg->clientid);
1391 *p++ = cpu_to_be32(24);
1392 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1393 *p++ = cpu_to_be32(arg->server->s_dev);
1394 *p++ = cpu_to_be32(arg->id.uniquifier);
1395 xdr_encode_hyper(p, arg->id.create_time);
1396}
1397
1398static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1399{
1400 __be32 *p;
1401
1402 p = reserve_space(xdr, 4);
1403 switch(arg->createmode) {
1404 case NFS4_CREATE_UNCHECKED:
1405 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1406 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
1407 break;
1408 case NFS4_CREATE_GUARDED:
1409 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1410 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
1411 break;
1412 case NFS4_CREATE_EXCLUSIVE:
1413 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1414 encode_nfs4_verifier(xdr, &arg->u.verifier);
1415 break;
1416 case NFS4_CREATE_EXCLUSIVE4_1:
1417 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1418 encode_nfs4_verifier(xdr, &arg->u.verifier);
1419 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, true);
1420 }
1421}
1422
1423static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1424{
1425 __be32 *p;
1426
1427 p = reserve_space(xdr, 4);
1428 switch (arg->open_flags & O_CREAT) {
1429 case 0:
1430 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1431 break;
1432 default:
1433 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1434 encode_createmode(xdr, arg);
1435 }
1436}
1437
1438static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1439{
1440 __be32 *p;
1441
1442 p = reserve_space(xdr, 4);
1443 switch (delegation_type) {
1444 case 0:
1445 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1446 break;
1447 case FMODE_READ:
1448 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1449 break;
1450 case FMODE_WRITE|FMODE_READ:
1451 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1452 break;
1453 default:
1454 BUG();
1455 }
1456}
1457
1458static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1459{
1460 __be32 *p;
1461
1462 p = reserve_space(xdr, 4);
1463 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1464 encode_string(xdr, name->len, name->name);
1465}
1466
1467static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1468{
1469 __be32 *p;
1470
1471 p = reserve_space(xdr, 4);
1472 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1473 encode_delegation_type(xdr, type);
1474}
1475
1476static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1477{
1478 __be32 *p;
1479
1480 p = reserve_space(xdr, 4);
1481 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1482 encode_nfs4_stateid(xdr, stateid);
1483 encode_string(xdr, name->len, name->name);
1484}
1485
1486static inline void encode_claim_fh(struct xdr_stream *xdr)
1487{
1488 __be32 *p;
1489
1490 p = reserve_space(xdr, 4);
1491 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1492}
1493
1494static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1495{
1496 __be32 *p;
1497
1498 p = reserve_space(xdr, 4);
1499 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1500 encode_nfs4_stateid(xdr, stateid);
1501}
1502
1503static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1504{
1505 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1506 encode_openhdr(xdr, arg);
1507 encode_opentype(xdr, arg);
1508 switch (arg->claim) {
1509 case NFS4_OPEN_CLAIM_NULL:
1510 encode_claim_null(xdr, arg->name);
1511 break;
1512 case NFS4_OPEN_CLAIM_PREVIOUS:
1513 encode_claim_previous(xdr, arg->u.delegation_type);
1514 break;
1515 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1516 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1517 break;
1518 case NFS4_OPEN_CLAIM_FH:
1519 encode_claim_fh(xdr);
1520 break;
1521 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1522 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1523 break;
1524 default:
1525 BUG();
1526 }
1527}
1528
1529static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1530{
1531 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1532 encode_nfs4_stateid(xdr, arg->stateid);
1533 encode_nfs4_seqid(xdr, arg->seqid);
1534}
1535
1536static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1537{
1538 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1539 encode_nfs4_stateid(xdr, &arg->stateid);
1540 encode_nfs4_seqid(xdr, arg->seqid);
1541 encode_share_access(xdr, arg->share_access);
1542}
1543
1544static void
1545encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1546{
1547 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1548 encode_string(xdr, fh->size, fh->data);
1549}
1550
1551static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1552{
1553 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1554}
1555
1556static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1557 struct compound_hdr *hdr)
1558{
1559 __be32 *p;
1560
1561 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1562 encode_nfs4_stateid(xdr, &args->stateid);
1563
1564 p = reserve_space(xdr, 12);
1565 p = xdr_encode_hyper(p, args->offset);
1566 *p = cpu_to_be32(args->count);
1567}
1568
1569static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1570{
1571 uint32_t attrs[3] = {
1572 FATTR4_WORD0_RDATTR_ERROR,
1573 FATTR4_WORD1_MOUNTED_ON_FILEID,
1574 };
1575 uint32_t dircount = readdir->count >> 1;
1576 __be32 *p, verf[2];
1577 uint32_t attrlen = 0;
1578 unsigned int i;
1579
1580 if (readdir->plus) {
1581 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1582 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1583 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1584 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1585 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1586 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1587 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1588 dircount >>= 1;
1589 }
1590 /* Use mounted_on_fileid only if the server supports it */
1591 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1592 attrs[0] |= FATTR4_WORD0_FILEID;
1593 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1594 attrs[i] &= readdir->bitmask[i];
1595 if (attrs[i] != 0)
1596 attrlen = i+1;
1597 }
1598
1599 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1600 encode_uint64(xdr, readdir->cookie);
1601 encode_nfs4_verifier(xdr, &readdir->verifier);
1602 p = reserve_space(xdr, 12 + (attrlen << 2));
1603 *p++ = cpu_to_be32(dircount);
1604 *p++ = cpu_to_be32(readdir->count);
1605 *p++ = cpu_to_be32(attrlen);
1606 for (i = 0; i < attrlen; i++)
1607 *p++ = cpu_to_be32(attrs[i]);
1608 memcpy(verf, readdir->verifier.data, sizeof(verf));
1609
1610 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1611 __func__,
1612 (unsigned long long)readdir->cookie,
1613 verf[0], verf[1],
1614 attrs[0] & readdir->bitmask[0],
1615 attrs[1] & readdir->bitmask[1],
1616 attrs[2] & readdir->bitmask[2]);
1617}
1618
1619static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1620{
1621 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1622}
1623
1624static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1625{
1626 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1627 encode_string(xdr, name->len, name->name);
1628}
1629
1630static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1631{
1632 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1633 encode_string(xdr, oldname->len, oldname->name);
1634 encode_string(xdr, newname->len, newname->name);
1635}
1636
1637static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1638 struct compound_hdr *hdr)
1639{
1640 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1641 encode_uint64(xdr, clid);
1642}
1643
1644static void
1645encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1646{
1647 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1648}
1649
1650static void
1651encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1652{
1653 __be32 *p;
1654
1655 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1656 encode_nfs4_stateid(xdr, &zero_stateid);
1657 p = reserve_space(xdr, 2*4);
1658 *p++ = cpu_to_be32(1);
1659 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1660 p = reserve_space(xdr, 4);
1661 *p = cpu_to_be32(arg->acl_len);
1662 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1663}
1664
1665static void
1666encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1667{
1668 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1669}
1670
1671static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1672{
1673 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1674 encode_nfs4_stateid(xdr, &arg->stateid);
1675 encode_attrs(xdr, arg->iap, arg->label, server, false);
1676}
1677
1678static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1679{
1680 __be32 *p;
1681
1682 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1683 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1684
1685 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1686 setclientid->sc_clnt->cl_owner_id);
1687 p = reserve_space(xdr, 4);
1688 *p = cpu_to_be32(setclientid->sc_prog);
1689 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1690 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1691 p = reserve_space(xdr, 4);
1692 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1693}
1694
1695static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1696{
1697 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1698 decode_setclientid_confirm_maxsz, hdr);
1699 encode_uint64(xdr, arg->clientid);
1700 encode_nfs4_verifier(xdr, &arg->confirm);
1701}
1702
1703static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1704 struct compound_hdr *hdr)
1705{
1706 __be32 *p;
1707
1708 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1709 encode_nfs4_stateid(xdr, &args->stateid);
1710
1711 p = reserve_space(xdr, 16);
1712 p = xdr_encode_hyper(p, args->offset);
1713 *p++ = cpu_to_be32(args->stable);
1714 *p = cpu_to_be32(args->count);
1715
1716 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1717}
1718
1719static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1720{
1721 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1722 encode_nfs4_stateid(xdr, stateid);
1723}
1724
1725static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1726{
1727 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1728 encode_string(xdr, name->len, name->name);
1729}
1730
1731#if defined(CONFIG_NFS_V4_1)
1732/* NFSv4.1 operations */
1733static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1734 struct nfs41_bind_conn_to_session_args *args,
1735 struct compound_hdr *hdr)
1736{
1737 __be32 *p;
1738
1739 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1740 decode_bind_conn_to_session_maxsz, hdr);
1741 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1742 p = xdr_reserve_space(xdr, 8);
1743 *p++ = cpu_to_be32(args->dir);
1744 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1745}
1746
1747static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
1748{
1749 unsigned int i;
1750 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1751 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1752 encode_uint32(xdr, op_map->u.words[i]);
1753}
1754
1755static void encode_exchange_id(struct xdr_stream *xdr,
1756 struct nfs41_exchange_id_args *args,
1757 struct compound_hdr *hdr)
1758{
1759 __be32 *p;
1760 char impl_name[IMPL_NAME_LIMIT];
1761 int len = 0;
1762
1763 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1764 encode_nfs4_verifier(xdr, args->verifier);
1765
1766 encode_string(xdr, strlen(args->client->cl_owner_id),
1767 args->client->cl_owner_id);
1768
1769 encode_uint32(xdr, args->flags);
1770 encode_uint32(xdr, args->state_protect.how);
1771
1772 switch (args->state_protect.how) {
1773 case SP4_NONE:
1774 break;
1775 case SP4_MACH_CRED:
1776 encode_op_map(xdr, &args->state_protect.enforce);
1777 encode_op_map(xdr, &args->state_protect.allow);
1778 break;
1779 default:
1780 WARN_ON_ONCE(1);
1781 break;
1782 }
1783
1784 if (send_implementation_id &&
1785 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1786 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1787 <= sizeof(impl_name) + 1)
1788 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1789 utsname()->sysname, utsname()->release,
1790 utsname()->version, utsname()->machine);
1791
1792 if (len > 0) {
1793 encode_uint32(xdr, 1); /* implementation id array length=1 */
1794
1795 encode_string(xdr,
1796 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1797 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1798 encode_string(xdr, len, impl_name);
1799 /* just send zeros for nii_date - the date is in nii_name */
1800 p = reserve_space(xdr, 12);
1801 p = xdr_encode_hyper(p, 0);
1802 *p = cpu_to_be32(0);
1803 } else
1804 encode_uint32(xdr, 0); /* implementation id array length=0 */
1805}
1806
1807static void encode_create_session(struct xdr_stream *xdr,
1808 struct nfs41_create_session_args *args,
1809 struct compound_hdr *hdr)
1810{
1811 __be32 *p;
1812 struct nfs_client *clp = args->client;
1813 struct rpc_clnt *clnt = clp->cl_rpcclient;
1814 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1815 u32 max_resp_sz_cached;
1816
1817 /*
1818 * Assumes OPEN is the biggest non-idempotent compound.
1819 * 2 is the verifier.
1820 */
1821 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1822 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1823
1824 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1825 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1826 p = xdr_encode_hyper(p, args->clientid);
1827 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1828 *p++ = cpu_to_be32(args->flags); /*flags */
1829
1830 /* Fore Channel */
1831 *p++ = cpu_to_be32(0); /* header padding size */
1832 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1833 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1834 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1835 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1836 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1837 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1838
1839 /* Back Channel */
1840 *p++ = cpu_to_be32(0); /* header padding size */
1841 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1842 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1843 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1844 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1845 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1846 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1847
1848 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1849 *p++ = cpu_to_be32(1);
1850 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1851
1852 /* authsys_parms rfc1831 */
1853 *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */
1854 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1855 *p++ = cpu_to_be32(0); /* UID */
1856 *p++ = cpu_to_be32(0); /* GID */
1857 *p = cpu_to_be32(0); /* No more gids */
1858}
1859
1860static void encode_destroy_session(struct xdr_stream *xdr,
1861 struct nfs4_session *session,
1862 struct compound_hdr *hdr)
1863{
1864 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1865 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1866}
1867
1868static void encode_destroy_clientid(struct xdr_stream *xdr,
1869 uint64_t clientid,
1870 struct compound_hdr *hdr)
1871{
1872 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1873 encode_uint64(xdr, clientid);
1874}
1875
1876static void encode_reclaim_complete(struct xdr_stream *xdr,
1877 struct nfs41_reclaim_complete_args *args,
1878 struct compound_hdr *hdr)
1879{
1880 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1881 encode_uint32(xdr, args->one_fs);
1882}
1883#endif /* CONFIG_NFS_V4_1 */
1884
1885static void encode_sequence(struct xdr_stream *xdr,
1886 const struct nfs4_sequence_args *args,
1887 struct compound_hdr *hdr)
1888{
1889#if defined(CONFIG_NFS_V4_1)
1890 struct nfs4_session *session;
1891 struct nfs4_slot_table *tp;
1892 struct nfs4_slot *slot = args->sa_slot;
1893 __be32 *p;
1894
1895 tp = slot->table;
1896 session = tp->session;
1897 if (!session)
1898 return;
1899
1900 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1901
1902 /*
1903 * Sessionid + seqid + slotid + max slotid + cache_this
1904 */
1905 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1906 "max_slotid=%d cache_this=%d\n",
1907 __func__,
1908 ((u32 *)session->sess_id.data)[0],
1909 ((u32 *)session->sess_id.data)[1],
1910 ((u32 *)session->sess_id.data)[2],
1911 ((u32 *)session->sess_id.data)[3],
1912 slot->seq_nr, slot->slot_nr,
1913 tp->highest_used_slotid, args->sa_cache_this);
1914 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1915 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1916 *p++ = cpu_to_be32(slot->seq_nr);
1917 *p++ = cpu_to_be32(slot->slot_nr);
1918 *p++ = cpu_to_be32(tp->highest_used_slotid);
1919 *p = cpu_to_be32(args->sa_cache_this);
1920#endif /* CONFIG_NFS_V4_1 */
1921}
1922
1923#ifdef CONFIG_NFS_V4_1
1924static void
1925encode_getdeviceinfo(struct xdr_stream *xdr,
1926 const struct nfs4_getdeviceinfo_args *args,
1927 struct compound_hdr *hdr)
1928{
1929 __be32 *p;
1930
1931 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1932 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1933 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1934 NFS4_DEVICEID4_SIZE);
1935 *p++ = cpu_to_be32(args->pdev->layout_type);
1936 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1937
1938 p = reserve_space(xdr, 4 + 4);
1939 *p++ = cpu_to_be32(1); /* bitmap length */
1940 *p++ = cpu_to_be32(args->notify_types);
1941}
1942
1943static void
1944encode_layoutget(struct xdr_stream *xdr,
1945 const struct nfs4_layoutget_args *args,
1946 struct compound_hdr *hdr)
1947{
1948 __be32 *p;
1949
1950 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1951 p = reserve_space(xdr, 36);
1952 *p++ = cpu_to_be32(0); /* Signal layout available */
1953 *p++ = cpu_to_be32(args->type);
1954 *p++ = cpu_to_be32(args->range.iomode);
1955 p = xdr_encode_hyper(p, args->range.offset);
1956 p = xdr_encode_hyper(p, args->range.length);
1957 p = xdr_encode_hyper(p, args->minlength);
1958 encode_nfs4_stateid(xdr, &args->stateid);
1959 encode_uint32(xdr, args->maxcount);
1960
1961 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1962 __func__,
1963 args->type,
1964 args->range.iomode,
1965 (unsigned long)args->range.offset,
1966 (unsigned long)args->range.length,
1967 args->maxcount);
1968}
1969
1970static int
1971encode_layoutcommit(struct xdr_stream *xdr,
1972 struct inode *inode,
1973 struct nfs4_layoutcommit_args *args,
1974 struct compound_hdr *hdr)
1975{
1976 __be32 *p;
1977
1978 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1979 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1980
1981 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1982 p = reserve_space(xdr, 20);
1983 /* Only whole file layouts */
1984 p = xdr_encode_hyper(p, 0); /* offset */
1985 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1986 *p = cpu_to_be32(0); /* reclaim */
1987 encode_nfs4_stateid(xdr, &args->stateid);
1988 p = reserve_space(xdr, 20);
1989 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1990 p = xdr_encode_hyper(p, args->lastbytewritten);
1991 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1992 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1993
1994 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) {
1995 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1996 NFS_I(inode)->layout, xdr, args);
1997 } else {
1998 encode_uint32(xdr, args->layoutupdate_len);
1999 if (args->layoutupdate_pages) {
2000 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2001 args->layoutupdate_len);
2002 }
2003 }
2004
2005 return 0;
2006}
2007
2008static void
2009encode_layoutreturn(struct xdr_stream *xdr,
2010 const struct nfs4_layoutreturn_args *args,
2011 struct compound_hdr *hdr)
2012{
2013 __be32 *p;
2014
2015 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2016 p = reserve_space(xdr, 16);
2017 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2018 *p++ = cpu_to_be32(args->layout_type);
2019 *p++ = cpu_to_be32(args->range.iomode);
2020 *p = cpu_to_be32(RETURN_FILE);
2021 p = reserve_space(xdr, 16);
2022 p = xdr_encode_hyper(p, args->range.offset);
2023 p = xdr_encode_hyper(p, args->range.length);
2024 spin_lock(&args->inode->i_lock);
2025 encode_nfs4_stateid(xdr, &args->stateid);
2026 spin_unlock(&args->inode->i_lock);
2027 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2028 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2029 NFS_I(args->inode)->layout, xdr, args);
2030 } else
2031 encode_uint32(xdr, 0);
2032}
2033
2034static int
2035encode_secinfo_no_name(struct xdr_stream *xdr,
2036 const struct nfs41_secinfo_no_name_args *args,
2037 struct compound_hdr *hdr)
2038{
2039 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2040 encode_uint32(xdr, args->style);
2041 return 0;
2042}
2043
2044static void encode_test_stateid(struct xdr_stream *xdr,
2045 struct nfs41_test_stateid_args *args,
2046 struct compound_hdr *hdr)
2047{
2048 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2049 encode_uint32(xdr, 1);
2050 encode_nfs4_stateid(xdr, args->stateid);
2051}
2052
2053static void encode_free_stateid(struct xdr_stream *xdr,
2054 struct nfs41_free_stateid_args *args,
2055 struct compound_hdr *hdr)
2056{
2057 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2058 encode_nfs4_stateid(xdr, &args->stateid);
2059}
2060#endif /* CONFIG_NFS_V4_1 */
2061
2062/*
2063 * END OF "GENERIC" ENCODE ROUTINES.
2064 */
2065
2066static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2067{
2068#if defined(CONFIG_NFS_V4_1)
2069 struct nfs4_session *session = args->sa_slot->table->session;
2070 if (session)
2071 return session->clp->cl_mvops->minor_version;
2072#endif /* CONFIG_NFS_V4_1 */
2073 return 0;
2074}
2075
2076/*
2077 * Encode an ACCESS request
2078 */
2079static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2080 const struct nfs4_accessargs *args)
2081{
2082 struct compound_hdr hdr = {
2083 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2084 };
2085
2086 encode_compound_hdr(xdr, req, &hdr);
2087 encode_sequence(xdr, &args->seq_args, &hdr);
2088 encode_putfh(xdr, args->fh, &hdr);
2089 encode_access(xdr, args->access, &hdr);
2090 encode_getfattr(xdr, args->bitmask, &hdr);
2091 encode_nops(&hdr);
2092}
2093
2094/*
2095 * Encode LOOKUP request
2096 */
2097static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2098 const struct nfs4_lookup_arg *args)
2099{
2100 struct compound_hdr hdr = {
2101 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2102 };
2103
2104 encode_compound_hdr(xdr, req, &hdr);
2105 encode_sequence(xdr, &args->seq_args, &hdr);
2106 encode_putfh(xdr, args->dir_fh, &hdr);
2107 encode_lookup(xdr, args->name, &hdr);
2108 encode_getfh(xdr, &hdr);
2109 encode_getfattr(xdr, args->bitmask, &hdr);
2110 encode_nops(&hdr);
2111}
2112
2113/*
2114 * Encode LOOKUP_ROOT request
2115 */
2116static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2117 struct xdr_stream *xdr,
2118 const struct nfs4_lookup_root_arg *args)
2119{
2120 struct compound_hdr hdr = {
2121 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2122 };
2123
2124 encode_compound_hdr(xdr, req, &hdr);
2125 encode_sequence(xdr, &args->seq_args, &hdr);
2126 encode_putrootfh(xdr, &hdr);
2127 encode_getfh(xdr, &hdr);
2128 encode_getfattr(xdr, args->bitmask, &hdr);
2129 encode_nops(&hdr);
2130}
2131
2132/*
2133 * Encode REMOVE request
2134 */
2135static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2136 const struct nfs_removeargs *args)
2137{
2138 struct compound_hdr hdr = {
2139 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2140 };
2141
2142 encode_compound_hdr(xdr, req, &hdr);
2143 encode_sequence(xdr, &args->seq_args, &hdr);
2144 encode_putfh(xdr, args->fh, &hdr);
2145 encode_remove(xdr, &args->name, &hdr);
2146 encode_nops(&hdr);
2147}
2148
2149/*
2150 * Encode RENAME request
2151 */
2152static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2153 const struct nfs_renameargs *args)
2154{
2155 struct compound_hdr hdr = {
2156 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2157 };
2158
2159 encode_compound_hdr(xdr, req, &hdr);
2160 encode_sequence(xdr, &args->seq_args, &hdr);
2161 encode_putfh(xdr, args->old_dir, &hdr);
2162 encode_savefh(xdr, &hdr);
2163 encode_putfh(xdr, args->new_dir, &hdr);
2164 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2165 encode_nops(&hdr);
2166}
2167
2168/*
2169 * Encode LINK request
2170 */
2171static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2172 const struct nfs4_link_arg *args)
2173{
2174 struct compound_hdr hdr = {
2175 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2176 };
2177
2178 encode_compound_hdr(xdr, req, &hdr);
2179 encode_sequence(xdr, &args->seq_args, &hdr);
2180 encode_putfh(xdr, args->fh, &hdr);
2181 encode_savefh(xdr, &hdr);
2182 encode_putfh(xdr, args->dir_fh, &hdr);
2183 encode_link(xdr, args->name, &hdr);
2184 encode_restorefh(xdr, &hdr);
2185 encode_getfattr(xdr, args->bitmask, &hdr);
2186 encode_nops(&hdr);
2187}
2188
2189/*
2190 * Encode CREATE request
2191 */
2192static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2193 const struct nfs4_create_arg *args)
2194{
2195 struct compound_hdr hdr = {
2196 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2197 };
2198
2199 encode_compound_hdr(xdr, req, &hdr);
2200 encode_sequence(xdr, &args->seq_args, &hdr);
2201 encode_putfh(xdr, args->dir_fh, &hdr);
2202 encode_create(xdr, args, &hdr);
2203 encode_getfh(xdr, &hdr);
2204 encode_getfattr(xdr, args->bitmask, &hdr);
2205 encode_nops(&hdr);
2206}
2207
2208/*
2209 * Encode SYMLINK request
2210 */
2211static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2212 const struct nfs4_create_arg *args)
2213{
2214 nfs4_xdr_enc_create(req, xdr, args);
2215}
2216
2217/*
2218 * Encode GETATTR request
2219 */
2220static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2221 const struct nfs4_getattr_arg *args)
2222{
2223 struct compound_hdr hdr = {
2224 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2225 };
2226
2227 encode_compound_hdr(xdr, req, &hdr);
2228 encode_sequence(xdr, &args->seq_args, &hdr);
2229 encode_putfh(xdr, args->fh, &hdr);
2230 encode_getfattr(xdr, args->bitmask, &hdr);
2231 encode_nops(&hdr);
2232}
2233
2234/*
2235 * Encode a CLOSE request
2236 */
2237static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2238 struct nfs_closeargs *args)
2239{
2240 struct compound_hdr hdr = {
2241 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2242 };
2243
2244 encode_compound_hdr(xdr, req, &hdr);
2245 encode_sequence(xdr, &args->seq_args, &hdr);
2246 encode_putfh(xdr, args->fh, &hdr);
2247 encode_close(xdr, args, &hdr);
2248 encode_getfattr(xdr, args->bitmask, &hdr);
2249 encode_nops(&hdr);
2250}
2251
2252/*
2253 * Encode an OPEN request
2254 */
2255static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2256 struct nfs_openargs *args)
2257{
2258 struct compound_hdr hdr = {
2259 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2260 };
2261
2262 encode_compound_hdr(xdr, req, &hdr);
2263 encode_sequence(xdr, &args->seq_args, &hdr);
2264 encode_putfh(xdr, args->fh, &hdr);
2265 encode_open(xdr, args, &hdr);
2266 encode_getfh(xdr, &hdr);
2267 if (args->access)
2268 encode_access(xdr, args->access, &hdr);
2269 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2270 encode_nops(&hdr);
2271}
2272
2273/*
2274 * Encode an OPEN_CONFIRM request
2275 */
2276static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2277 struct xdr_stream *xdr,
2278 struct nfs_open_confirmargs *args)
2279{
2280 struct compound_hdr hdr = {
2281 .nops = 0,
2282 };
2283
2284 encode_compound_hdr(xdr, req, &hdr);
2285 encode_putfh(xdr, args->fh, &hdr);
2286 encode_open_confirm(xdr, args, &hdr);
2287 encode_nops(&hdr);
2288}
2289
2290/*
2291 * Encode an OPEN request with no attributes.
2292 */
2293static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2294 struct xdr_stream *xdr,
2295 struct nfs_openargs *args)
2296{
2297 struct compound_hdr hdr = {
2298 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2299 };
2300
2301 encode_compound_hdr(xdr, req, &hdr);
2302 encode_sequence(xdr, &args->seq_args, &hdr);
2303 encode_putfh(xdr, args->fh, &hdr);
2304 encode_open(xdr, args, &hdr);
2305 if (args->access)
2306 encode_access(xdr, args->access, &hdr);
2307 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2308 encode_nops(&hdr);
2309}
2310
2311/*
2312 * Encode an OPEN_DOWNGRADE request
2313 */
2314static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2315 struct xdr_stream *xdr,
2316 struct nfs_closeargs *args)
2317{
2318 struct compound_hdr hdr = {
2319 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2320 };
2321
2322 encode_compound_hdr(xdr, req, &hdr);
2323 encode_sequence(xdr, &args->seq_args, &hdr);
2324 encode_putfh(xdr, args->fh, &hdr);
2325 encode_open_downgrade(xdr, args, &hdr);
2326 encode_getfattr(xdr, args->bitmask, &hdr);
2327 encode_nops(&hdr);
2328}
2329
2330/*
2331 * Encode a LOCK request
2332 */
2333static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2334 struct nfs_lock_args *args)
2335{
2336 struct compound_hdr hdr = {
2337 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2338 };
2339
2340 encode_compound_hdr(xdr, req, &hdr);
2341 encode_sequence(xdr, &args->seq_args, &hdr);
2342 encode_putfh(xdr, args->fh, &hdr);
2343 encode_lock(xdr, args, &hdr);
2344 encode_nops(&hdr);
2345}
2346
2347/*
2348 * Encode a LOCKT request
2349 */
2350static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2351 struct nfs_lockt_args *args)
2352{
2353 struct compound_hdr hdr = {
2354 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2355 };
2356
2357 encode_compound_hdr(xdr, req, &hdr);
2358 encode_sequence(xdr, &args->seq_args, &hdr);
2359 encode_putfh(xdr, args->fh, &hdr);
2360 encode_lockt(xdr, args, &hdr);
2361 encode_nops(&hdr);
2362}
2363
2364/*
2365 * Encode a LOCKU request
2366 */
2367static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2368 struct nfs_locku_args *args)
2369{
2370 struct compound_hdr hdr = {
2371 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2372 };
2373
2374 encode_compound_hdr(xdr, req, &hdr);
2375 encode_sequence(xdr, &args->seq_args, &hdr);
2376 encode_putfh(xdr, args->fh, &hdr);
2377 encode_locku(xdr, args, &hdr);
2378 encode_nops(&hdr);
2379}
2380
2381static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2382 struct xdr_stream *xdr,
2383 struct nfs_release_lockowner_args *args)
2384{
2385 struct compound_hdr hdr = {
2386 .minorversion = 0,
2387 };
2388
2389 encode_compound_hdr(xdr, req, &hdr);
2390 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2391 encode_nops(&hdr);
2392}
2393
2394/*
2395 * Encode a READLINK request
2396 */
2397static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2398 const struct nfs4_readlink *args)
2399{
2400 struct compound_hdr hdr = {
2401 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2402 };
2403
2404 encode_compound_hdr(xdr, req, &hdr);
2405 encode_sequence(xdr, &args->seq_args, &hdr);
2406 encode_putfh(xdr, args->fh, &hdr);
2407 encode_readlink(xdr, args, req, &hdr);
2408
2409 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2410 args->pgbase, args->pglen);
2411 encode_nops(&hdr);
2412}
2413
2414/*
2415 * Encode a READDIR request
2416 */
2417static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2418 const struct nfs4_readdir_arg *args)
2419{
2420 struct compound_hdr hdr = {
2421 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2422 };
2423
2424 encode_compound_hdr(xdr, req, &hdr);
2425 encode_sequence(xdr, &args->seq_args, &hdr);
2426 encode_putfh(xdr, args->fh, &hdr);
2427 encode_readdir(xdr, args, req, &hdr);
2428
2429 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2430 args->pgbase, args->count);
2431 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2432 __func__, hdr.replen << 2, args->pages,
2433 args->pgbase, args->count);
2434 encode_nops(&hdr);
2435}
2436
2437/*
2438 * Encode a READ request
2439 */
2440static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2441 struct nfs_pgio_args *args)
2442{
2443 struct compound_hdr hdr = {
2444 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2445 };
2446
2447 encode_compound_hdr(xdr, req, &hdr);
2448 encode_sequence(xdr, &args->seq_args, &hdr);
2449 encode_putfh(xdr, args->fh, &hdr);
2450 encode_read(xdr, args, &hdr);
2451
2452 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2453 args->pages, args->pgbase, args->count);
2454 req->rq_rcv_buf.flags |= XDRBUF_READ;
2455 encode_nops(&hdr);
2456}
2457
2458/*
2459 * Encode an SETATTR request
2460 */
2461static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2462 struct nfs_setattrargs *args)
2463{
2464 struct compound_hdr hdr = {
2465 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2466 };
2467
2468 encode_compound_hdr(xdr, req, &hdr);
2469 encode_sequence(xdr, &args->seq_args, &hdr);
2470 encode_putfh(xdr, args->fh, &hdr);
2471 encode_setattr(xdr, args, args->server, &hdr);
2472 encode_getfattr(xdr, args->bitmask, &hdr);
2473 encode_nops(&hdr);
2474}
2475
2476/*
2477 * Encode a GETACL request
2478 */
2479static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2480 struct nfs_getaclargs *args)
2481{
2482 struct compound_hdr hdr = {
2483 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2484 };
2485 uint32_t replen;
2486
2487 encode_compound_hdr(xdr, req, &hdr);
2488 encode_sequence(xdr, &args->seq_args, &hdr);
2489 encode_putfh(xdr, args->fh, &hdr);
2490 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2491 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2492
2493 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2494 args->acl_pages, 0, args->acl_len);
2495
2496 encode_nops(&hdr);
2497}
2498
2499/*
2500 * Encode a WRITE request
2501 */
2502static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2503 struct nfs_pgio_args *args)
2504{
2505 struct compound_hdr hdr = {
2506 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2507 };
2508
2509 encode_compound_hdr(xdr, req, &hdr);
2510 encode_sequence(xdr, &args->seq_args, &hdr);
2511 encode_putfh(xdr, args->fh, &hdr);
2512 encode_write(xdr, args, &hdr);
2513 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2514 if (args->bitmask)
2515 encode_getfattr(xdr, args->bitmask, &hdr);
2516 encode_nops(&hdr);
2517}
2518
2519/*
2520 * a COMMIT request
2521 */
2522static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2523 struct nfs_commitargs *args)
2524{
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2527 };
2528
2529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_commit(xdr, args, &hdr);
2533 encode_nops(&hdr);
2534}
2535
2536/*
2537 * FSINFO request
2538 */
2539static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2540 struct nfs4_fsinfo_arg *args)
2541{
2542 struct compound_hdr hdr = {
2543 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2544 };
2545
2546 encode_compound_hdr(xdr, req, &hdr);
2547 encode_sequence(xdr, &args->seq_args, &hdr);
2548 encode_putfh(xdr, args->fh, &hdr);
2549 encode_fsinfo(xdr, args->bitmask, &hdr);
2550 encode_nops(&hdr);
2551}
2552
2553/*
2554 * a PATHCONF request
2555 */
2556static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2557 const struct nfs4_pathconf_arg *args)
2558{
2559 struct compound_hdr hdr = {
2560 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2561 };
2562
2563 encode_compound_hdr(xdr, req, &hdr);
2564 encode_sequence(xdr, &args->seq_args, &hdr);
2565 encode_putfh(xdr, args->fh, &hdr);
2566 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2567 &hdr);
2568 encode_nops(&hdr);
2569}
2570
2571/*
2572 * a STATFS request
2573 */
2574static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2575 const struct nfs4_statfs_arg *args)
2576{
2577 struct compound_hdr hdr = {
2578 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2579 };
2580
2581 encode_compound_hdr(xdr, req, &hdr);
2582 encode_sequence(xdr, &args->seq_args, &hdr);
2583 encode_putfh(xdr, args->fh, &hdr);
2584 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2585 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2586 encode_nops(&hdr);
2587}
2588
2589/*
2590 * GETATTR_BITMAP request
2591 */
2592static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2593 struct xdr_stream *xdr,
2594 struct nfs4_server_caps_arg *args)
2595{
2596 const u32 *bitmask = args->bitmask;
2597 struct compound_hdr hdr = {
2598 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2599 };
2600
2601 encode_compound_hdr(xdr, req, &hdr);
2602 encode_sequence(xdr, &args->seq_args, &hdr);
2603 encode_putfh(xdr, args->fhandle, &hdr);
2604 encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr);
2605 encode_nops(&hdr);
2606}
2607
2608/*
2609 * a RENEW request
2610 */
2611static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2612 struct nfs_client *clp)
2613{
2614 struct compound_hdr hdr = {
2615 .nops = 0,
2616 };
2617
2618 encode_compound_hdr(xdr, req, &hdr);
2619 encode_renew(xdr, clp->cl_clientid, &hdr);
2620 encode_nops(&hdr);
2621}
2622
2623/*
2624 * a SETCLIENTID request
2625 */
2626static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2627 struct xdr_stream *xdr,
2628 struct nfs4_setclientid *sc)
2629{
2630 struct compound_hdr hdr = {
2631 .nops = 0,
2632 };
2633
2634 encode_compound_hdr(xdr, req, &hdr);
2635 encode_setclientid(xdr, sc, &hdr);
2636 encode_nops(&hdr);
2637}
2638
2639/*
2640 * a SETCLIENTID_CONFIRM request
2641 */
2642static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2643 struct xdr_stream *xdr,
2644 struct nfs4_setclientid_res *arg)
2645{
2646 struct compound_hdr hdr = {
2647 .nops = 0,
2648 };
2649
2650 encode_compound_hdr(xdr, req, &hdr);
2651 encode_setclientid_confirm(xdr, arg, &hdr);
2652 encode_nops(&hdr);
2653}
2654
2655/*
2656 * DELEGRETURN request
2657 */
2658static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2659 struct xdr_stream *xdr,
2660 const struct nfs4_delegreturnargs *args)
2661{
2662 struct compound_hdr hdr = {
2663 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2664 };
2665
2666 encode_compound_hdr(xdr, req, &hdr);
2667 encode_sequence(xdr, &args->seq_args, &hdr);
2668 encode_putfh(xdr, args->fhandle, &hdr);
2669 encode_getfattr(xdr, args->bitmask, &hdr);
2670 encode_delegreturn(xdr, args->stateid, &hdr);
2671 encode_nops(&hdr);
2672}
2673
2674/*
2675 * Encode FS_LOCATIONS request
2676 */
2677static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2678 struct xdr_stream *xdr,
2679 struct nfs4_fs_locations_arg *args)
2680{
2681 struct compound_hdr hdr = {
2682 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2683 };
2684 uint32_t replen;
2685
2686 encode_compound_hdr(xdr, req, &hdr);
2687 encode_sequence(xdr, &args->seq_args, &hdr);
2688 if (args->migration) {
2689 encode_putfh(xdr, args->fh, &hdr);
2690 replen = hdr.replen;
2691 encode_fs_locations(xdr, args->bitmask, &hdr);
2692 if (args->renew)
2693 encode_renew(xdr, args->clientid, &hdr);
2694 } else {
2695 encode_putfh(xdr, args->dir_fh, &hdr);
2696 encode_lookup(xdr, args->name, &hdr);
2697 replen = hdr.replen;
2698 encode_fs_locations(xdr, args->bitmask, &hdr);
2699 }
2700
2701 /* Set up reply kvec to capture returned fs_locations array. */
2702 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2703 0, PAGE_SIZE);
2704 encode_nops(&hdr);
2705}
2706
2707/*
2708 * Encode SECINFO request
2709 */
2710static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2711 struct xdr_stream *xdr,
2712 struct nfs4_secinfo_arg *args)
2713{
2714 struct compound_hdr hdr = {
2715 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2716 };
2717
2718 encode_compound_hdr(xdr, req, &hdr);
2719 encode_sequence(xdr, &args->seq_args, &hdr);
2720 encode_putfh(xdr, args->dir_fh, &hdr);
2721 encode_secinfo(xdr, args->name, &hdr);
2722 encode_nops(&hdr);
2723}
2724
2725/*
2726 * Encode FSID_PRESENT request
2727 */
2728static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2729 struct xdr_stream *xdr,
2730 struct nfs4_fsid_present_arg *args)
2731{
2732 struct compound_hdr hdr = {
2733 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2734 };
2735
2736 encode_compound_hdr(xdr, req, &hdr);
2737 encode_sequence(xdr, &args->seq_args, &hdr);
2738 encode_putfh(xdr, args->fh, &hdr);
2739 encode_getfh(xdr, &hdr);
2740 if (args->renew)
2741 encode_renew(xdr, args->clientid, &hdr);
2742 encode_nops(&hdr);
2743}
2744
2745#if defined(CONFIG_NFS_V4_1)
2746/*
2747 * BIND_CONN_TO_SESSION request
2748 */
2749static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2750 struct xdr_stream *xdr,
2751 struct nfs41_bind_conn_to_session_args *args)
2752{
2753 struct compound_hdr hdr = {
2754 .minorversion = args->client->cl_mvops->minor_version,
2755 };
2756
2757 encode_compound_hdr(xdr, req, &hdr);
2758 encode_bind_conn_to_session(xdr, args, &hdr);
2759 encode_nops(&hdr);
2760}
2761
2762/*
2763 * EXCHANGE_ID request
2764 */
2765static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2766 struct xdr_stream *xdr,
2767 struct nfs41_exchange_id_args *args)
2768{
2769 struct compound_hdr hdr = {
2770 .minorversion = args->client->cl_mvops->minor_version,
2771 };
2772
2773 encode_compound_hdr(xdr, req, &hdr);
2774 encode_exchange_id(xdr, args, &hdr);
2775 encode_nops(&hdr);
2776}
2777
2778/*
2779 * a CREATE_SESSION request
2780 */
2781static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2782 struct xdr_stream *xdr,
2783 struct nfs41_create_session_args *args)
2784{
2785 struct compound_hdr hdr = {
2786 .minorversion = args->client->cl_mvops->minor_version,
2787 };
2788
2789 encode_compound_hdr(xdr, req, &hdr);
2790 encode_create_session(xdr, args, &hdr);
2791 encode_nops(&hdr);
2792}
2793
2794/*
2795 * a DESTROY_SESSION request
2796 */
2797static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2798 struct xdr_stream *xdr,
2799 struct nfs4_session *session)
2800{
2801 struct compound_hdr hdr = {
2802 .minorversion = session->clp->cl_mvops->minor_version,
2803 };
2804
2805 encode_compound_hdr(xdr, req, &hdr);
2806 encode_destroy_session(xdr, session, &hdr);
2807 encode_nops(&hdr);
2808}
2809
2810/*
2811 * a DESTROY_CLIENTID request
2812 */
2813static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2814 struct xdr_stream *xdr,
2815 struct nfs_client *clp)
2816{
2817 struct compound_hdr hdr = {
2818 .minorversion = clp->cl_mvops->minor_version,
2819 };
2820
2821 encode_compound_hdr(xdr, req, &hdr);
2822 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2823 encode_nops(&hdr);
2824}
2825
2826/*
2827 * a SEQUENCE request
2828 */
2829static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2830 struct nfs4_sequence_args *args)
2831{
2832 struct compound_hdr hdr = {
2833 .minorversion = nfs4_xdr_minorversion(args),
2834 };
2835
2836 encode_compound_hdr(xdr, req, &hdr);
2837 encode_sequence(xdr, args, &hdr);
2838 encode_nops(&hdr);
2839}
2840
2841/*
2842 * a GET_LEASE_TIME request
2843 */
2844static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2845 struct xdr_stream *xdr,
2846 struct nfs4_get_lease_time_args *args)
2847{
2848 struct compound_hdr hdr = {
2849 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2850 };
2851 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2852
2853 encode_compound_hdr(xdr, req, &hdr);
2854 encode_sequence(xdr, &args->la_seq_args, &hdr);
2855 encode_putrootfh(xdr, &hdr);
2856 encode_fsinfo(xdr, lease_bitmap, &hdr);
2857 encode_nops(&hdr);
2858}
2859
2860/*
2861 * a RECLAIM_COMPLETE request
2862 */
2863static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2864 struct xdr_stream *xdr,
2865 struct nfs41_reclaim_complete_args *args)
2866{
2867 struct compound_hdr hdr = {
2868 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2869 };
2870
2871 encode_compound_hdr(xdr, req, &hdr);
2872 encode_sequence(xdr, &args->seq_args, &hdr);
2873 encode_reclaim_complete(xdr, args, &hdr);
2874 encode_nops(&hdr);
2875}
2876
2877/*
2878 * Encode GETDEVICEINFO request
2879 */
2880static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2881 struct xdr_stream *xdr,
2882 struct nfs4_getdeviceinfo_args *args)
2883{
2884 struct compound_hdr hdr = {
2885 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2886 };
2887
2888 encode_compound_hdr(xdr, req, &hdr);
2889 encode_sequence(xdr, &args->seq_args, &hdr);
2890 encode_getdeviceinfo(xdr, args, &hdr);
2891
2892 /* set up reply kvec. Subtract notification bitmap max size (2)
2893 * so that notification bitmap is put in xdr_buf tail */
2894 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2895 args->pdev->pages, args->pdev->pgbase,
2896 args->pdev->pglen);
2897
2898 encode_nops(&hdr);
2899}
2900
2901/*
2902 * Encode LAYOUTGET request
2903 */
2904static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2905 struct xdr_stream *xdr,
2906 struct nfs4_layoutget_args *args)
2907{
2908 struct compound_hdr hdr = {
2909 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2910 };
2911
2912 encode_compound_hdr(xdr, req, &hdr);
2913 encode_sequence(xdr, &args->seq_args, &hdr);
2914 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2915 encode_layoutget(xdr, args, &hdr);
2916
2917 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2918 args->layout.pages, 0, args->layout.pglen);
2919
2920 encode_nops(&hdr);
2921}
2922
2923/*
2924 * Encode LAYOUTCOMMIT request
2925 */
2926static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2927 struct xdr_stream *xdr,
2928 struct nfs4_layoutcommit_args *args)
2929{
2930 struct nfs4_layoutcommit_data *data =
2931 container_of(args, struct nfs4_layoutcommit_data, args);
2932 struct compound_hdr hdr = {
2933 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2934 };
2935
2936 encode_compound_hdr(xdr, req, &hdr);
2937 encode_sequence(xdr, &args->seq_args, &hdr);
2938 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2939 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2940 encode_getfattr(xdr, args->bitmask, &hdr);
2941 encode_nops(&hdr);
2942}
2943
2944/*
2945 * Encode LAYOUTRETURN request
2946 */
2947static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2948 struct xdr_stream *xdr,
2949 struct nfs4_layoutreturn_args *args)
2950{
2951 struct compound_hdr hdr = {
2952 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2953 };
2954
2955 encode_compound_hdr(xdr, req, &hdr);
2956 encode_sequence(xdr, &args->seq_args, &hdr);
2957 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2958 encode_layoutreturn(xdr, args, &hdr);
2959 encode_nops(&hdr);
2960}
2961
2962/*
2963 * Encode SECINFO_NO_NAME request
2964 */
2965static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2966 struct xdr_stream *xdr,
2967 struct nfs41_secinfo_no_name_args *args)
2968{
2969 struct compound_hdr hdr = {
2970 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2971 };
2972
2973 encode_compound_hdr(xdr, req, &hdr);
2974 encode_sequence(xdr, &args->seq_args, &hdr);
2975 encode_putrootfh(xdr, &hdr);
2976 encode_secinfo_no_name(xdr, args, &hdr);
2977 encode_nops(&hdr);
2978 return 0;
2979}
2980
2981/*
2982 * Encode TEST_STATEID request
2983 */
2984static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2985 struct xdr_stream *xdr,
2986 struct nfs41_test_stateid_args *args)
2987{
2988 struct compound_hdr hdr = {
2989 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2990 };
2991
2992 encode_compound_hdr(xdr, req, &hdr);
2993 encode_sequence(xdr, &args->seq_args, &hdr);
2994 encode_test_stateid(xdr, args, &hdr);
2995 encode_nops(&hdr);
2996}
2997
2998/*
2999 * Encode FREE_STATEID request
3000 */
3001static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3002 struct xdr_stream *xdr,
3003 struct nfs41_free_stateid_args *args)
3004{
3005 struct compound_hdr hdr = {
3006 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3007 };
3008
3009 encode_compound_hdr(xdr, req, &hdr);
3010 encode_sequence(xdr, &args->seq_args, &hdr);
3011 encode_free_stateid(xdr, args, &hdr);
3012 encode_nops(&hdr);
3013}
3014#endif /* CONFIG_NFS_V4_1 */
3015
3016static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3017{
3018 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3019 "Remaining buffer length is %tu words.\n",
3020 func, xdr->end - xdr->p);
3021}
3022
3023static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3024{
3025 __be32 *p;
3026
3027 p = xdr_inline_decode(xdr, 4);
3028 if (unlikely(!p))
3029 goto out_overflow;
3030 *len = be32_to_cpup(p);
3031 p = xdr_inline_decode(xdr, *len);
3032 if (unlikely(!p))
3033 goto out_overflow;
3034 *string = (char *)p;
3035 return 0;
3036out_overflow:
3037 print_overflow_msg(__func__, xdr);
3038 return -EIO;
3039}
3040
3041static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3042{
3043 __be32 *p;
3044
3045 p = xdr_inline_decode(xdr, 8);
3046 if (unlikely(!p))
3047 goto out_overflow;
3048 hdr->status = be32_to_cpup(p++);
3049 hdr->taglen = be32_to_cpup(p);
3050
3051 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3052 if (unlikely(!p))
3053 goto out_overflow;
3054 hdr->tag = (char *)p;
3055 p += XDR_QUADLEN(hdr->taglen);
3056 hdr->nops = be32_to_cpup(p);
3057 if (unlikely(hdr->nops < 1))
3058 return nfs4_stat_to_errno(hdr->status);
3059 return 0;
3060out_overflow:
3061 print_overflow_msg(__func__, xdr);
3062 return -EIO;
3063}
3064
3065static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3066 int *nfs_retval)
3067{
3068 __be32 *p;
3069 uint32_t opnum;
3070 int32_t nfserr;
3071
3072 p = xdr_inline_decode(xdr, 8);
3073 if (unlikely(!p))
3074 goto out_overflow;
3075 opnum = be32_to_cpup(p++);
3076 if (unlikely(opnum != expected))
3077 goto out_bad_operation;
3078 nfserr = be32_to_cpup(p);
3079 if (nfserr == NFS_OK)
3080 *nfs_retval = 0;
3081 else
3082 *nfs_retval = nfs4_stat_to_errno(nfserr);
3083 return true;
3084out_bad_operation:
3085 dprintk("nfs: Server returned operation"
3086 " %d but we issued a request for %d\n",
3087 opnum, expected);
3088 *nfs_retval = -EREMOTEIO;
3089 return false;
3090out_overflow:
3091 print_overflow_msg(__func__, xdr);
3092 *nfs_retval = -EIO;
3093 return false;
3094}
3095
3096static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3097{
3098 int retval;
3099
3100 __decode_op_hdr(xdr, expected, &retval);
3101 return retval;
3102}
3103
3104/* Dummy routine */
3105static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3106{
3107 __be32 *p;
3108 unsigned int strlen;
3109 char *str;
3110
3111 p = xdr_inline_decode(xdr, 12);
3112 if (likely(p))
3113 return decode_opaque_inline(xdr, &strlen, &str);
3114 print_overflow_msg(__func__, xdr);
3115 return -EIO;
3116}
3117
3118static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3119{
3120 uint32_t bmlen;
3121 __be32 *p;
3122
3123 p = xdr_inline_decode(xdr, 4);
3124 if (unlikely(!p))
3125 goto out_overflow;
3126 bmlen = be32_to_cpup(p);
3127
3128 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3129 p = xdr_inline_decode(xdr, (bmlen << 2));
3130 if (unlikely(!p))
3131 goto out_overflow;
3132 if (bmlen > 0) {
3133 bitmap[0] = be32_to_cpup(p++);
3134 if (bmlen > 1) {
3135 bitmap[1] = be32_to_cpup(p++);
3136 if (bmlen > 2)
3137 bitmap[2] = be32_to_cpup(p);
3138 }
3139 }
3140 return 0;
3141out_overflow:
3142 print_overflow_msg(__func__, xdr);
3143 return -EIO;
3144}
3145
3146static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3147{
3148 __be32 *p;
3149
3150 p = xdr_inline_decode(xdr, 4);
3151 if (unlikely(!p))
3152 goto out_overflow;
3153 *attrlen = be32_to_cpup(p);
3154 *savep = xdr_stream_pos(xdr);
3155 return 0;
3156out_overflow:
3157 print_overflow_msg(__func__, xdr);
3158 return -EIO;
3159}
3160
3161static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3162{
3163 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3164 int ret;
3165 ret = decode_attr_bitmap(xdr, bitmask);
3166 if (unlikely(ret < 0))
3167 return ret;
3168 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3169 } else
3170 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3171 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3172 bitmask[0], bitmask[1], bitmask[2]);
3173 return 0;
3174}
3175
3176static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3177{
3178 __be32 *p;
3179 int ret = 0;
3180
3181 *type = 0;
3182 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3183 return -EIO;
3184 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3185 p = xdr_inline_decode(xdr, 4);
3186 if (unlikely(!p))
3187 goto out_overflow;
3188 *type = be32_to_cpup(p);
3189 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3190 dprintk("%s: bad type %d\n", __func__, *type);
3191 return -EIO;
3192 }
3193 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3194 ret = NFS_ATTR_FATTR_TYPE;
3195 }
3196 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3197 return ret;
3198out_overflow:
3199 print_overflow_msg(__func__, xdr);
3200 return -EIO;
3201}
3202
3203static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3204 uint32_t *bitmap, uint32_t *type)
3205{
3206 __be32 *p;
3207
3208 *type = 0;
3209 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3210 return -EIO;
3211 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3212 p = xdr_inline_decode(xdr, 4);
3213 if (unlikely(!p))
3214 goto out_overflow;
3215 *type = be32_to_cpup(p);
3216 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3217 }
3218 dprintk("%s: expire type=0x%x\n", __func__, *type);
3219 return 0;
3220out_overflow:
3221 print_overflow_msg(__func__, xdr);
3222 return -EIO;
3223}
3224
3225static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3226{
3227 __be32 *p;
3228 int ret = 0;
3229
3230 *change = 0;
3231 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3232 return -EIO;
3233 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3234 p = xdr_inline_decode(xdr, 8);
3235 if (unlikely(!p))
3236 goto out_overflow;
3237 xdr_decode_hyper(p, change);
3238 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3239 ret = NFS_ATTR_FATTR_CHANGE;
3240 }
3241 dprintk("%s: change attribute=%Lu\n", __func__,
3242 (unsigned long long)*change);
3243 return ret;
3244out_overflow:
3245 print_overflow_msg(__func__, xdr);
3246 return -EIO;
3247}
3248
3249static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3250{
3251 __be32 *p;
3252 int ret = 0;
3253
3254 *size = 0;
3255 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3256 return -EIO;
3257 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3258 p = xdr_inline_decode(xdr, 8);
3259 if (unlikely(!p))
3260 goto out_overflow;
3261 xdr_decode_hyper(p, size);
3262 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3263 ret = NFS_ATTR_FATTR_SIZE;
3264 }
3265 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3266 return ret;
3267out_overflow:
3268 print_overflow_msg(__func__, xdr);
3269 return -EIO;
3270}
3271
3272static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3273{
3274 __be32 *p;
3275
3276 *res = 0;
3277 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3278 return -EIO;
3279 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3280 p = xdr_inline_decode(xdr, 4);
3281 if (unlikely(!p))
3282 goto out_overflow;
3283 *res = be32_to_cpup(p);
3284 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3285 }
3286 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3287 return 0;
3288out_overflow:
3289 print_overflow_msg(__func__, xdr);
3290 return -EIO;
3291}
3292
3293static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3294{
3295 __be32 *p;
3296
3297 *res = 0;
3298 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3299 return -EIO;
3300 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3301 p = xdr_inline_decode(xdr, 4);
3302 if (unlikely(!p))
3303 goto out_overflow;
3304 *res = be32_to_cpup(p);
3305 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3306 }
3307 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3308 return 0;
3309out_overflow:
3310 print_overflow_msg(__func__, xdr);
3311 return -EIO;
3312}
3313
3314static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3315{
3316 __be32 *p;
3317 int ret = 0;
3318
3319 fsid->major = 0;
3320 fsid->minor = 0;
3321 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3322 return -EIO;
3323 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3324 p = xdr_inline_decode(xdr, 16);
3325 if (unlikely(!p))
3326 goto out_overflow;
3327 p = xdr_decode_hyper(p, &fsid->major);
3328 xdr_decode_hyper(p, &fsid->minor);
3329 bitmap[0] &= ~FATTR4_WORD0_FSID;
3330 ret = NFS_ATTR_FATTR_FSID;
3331 }
3332 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3333 (unsigned long long)fsid->major,
3334 (unsigned long long)fsid->minor);
3335 return ret;
3336out_overflow:
3337 print_overflow_msg(__func__, xdr);
3338 return -EIO;
3339}
3340
3341static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3342{
3343 __be32 *p;
3344
3345 *res = 60;
3346 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3347 return -EIO;
3348 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3349 p = xdr_inline_decode(xdr, 4);
3350 if (unlikely(!p))
3351 goto out_overflow;
3352 *res = be32_to_cpup(p);
3353 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3354 }
3355 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3356 return 0;
3357out_overflow:
3358 print_overflow_msg(__func__, xdr);
3359 return -EIO;
3360}
3361
3362static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3363{
3364 __be32 *p;
3365
3366 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3367 return -EIO;
3368 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3369 p = xdr_inline_decode(xdr, 4);
3370 if (unlikely(!p))
3371 goto out_overflow;
3372 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3373 *res = -be32_to_cpup(p);
3374 }
3375 return 0;
3376out_overflow:
3377 print_overflow_msg(__func__, xdr);
3378 return -EIO;
3379}
3380
3381static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3382 uint32_t *bitmap, uint32_t *bitmask)
3383{
3384 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3385 int ret;
3386 ret = decode_attr_bitmap(xdr, bitmask);
3387 if (unlikely(ret < 0))
3388 return ret;
3389 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3390 } else
3391 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3392 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3393 bitmask[0], bitmask[1], bitmask[2]);
3394 return 0;
3395}
3396
3397static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3398{
3399 __be32 *p;
3400 int len;
3401
3402 if (fh != NULL)
3403 memset(fh, 0, sizeof(*fh));
3404
3405 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3406 return -EIO;
3407 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3408 p = xdr_inline_decode(xdr, 4);
3409 if (unlikely(!p))
3410 goto out_overflow;
3411 len = be32_to_cpup(p);
3412 if (len > NFS4_FHSIZE)
3413 return -EIO;
3414 p = xdr_inline_decode(xdr, len);
3415 if (unlikely(!p))
3416 goto out_overflow;
3417 if (fh != NULL) {
3418 memcpy(fh->data, p, len);
3419 fh->size = len;
3420 }
3421 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3422 }
3423 return 0;
3424out_overflow:
3425 print_overflow_msg(__func__, xdr);
3426 return -EIO;
3427}
3428
3429static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3430{
3431 __be32 *p;
3432
3433 *res = 0;
3434 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3435 return -EIO;
3436 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3437 p = xdr_inline_decode(xdr, 4);
3438 if (unlikely(!p))
3439 goto out_overflow;
3440 *res = be32_to_cpup(p);
3441 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3442 }
3443 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3444 return 0;
3445out_overflow:
3446 print_overflow_msg(__func__, xdr);
3447 return -EIO;
3448}
3449
3450static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3451{
3452 __be32 *p;
3453 int ret = 0;
3454
3455 *fileid = 0;
3456 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3457 return -EIO;
3458 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3459 p = xdr_inline_decode(xdr, 8);
3460 if (unlikely(!p))
3461 goto out_overflow;
3462 xdr_decode_hyper(p, fileid);
3463 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3464 ret = NFS_ATTR_FATTR_FILEID;
3465 }
3466 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3467 return ret;
3468out_overflow:
3469 print_overflow_msg(__func__, xdr);
3470 return -EIO;
3471}
3472
3473static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3474{
3475 __be32 *p;
3476 int ret = 0;
3477
3478 *fileid = 0;
3479 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3480 return -EIO;
3481 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3482 p = xdr_inline_decode(xdr, 8);
3483 if (unlikely(!p))
3484 goto out_overflow;
3485 xdr_decode_hyper(p, fileid);
3486 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3487 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3488 }
3489 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3490 return ret;
3491out_overflow:
3492 print_overflow_msg(__func__, xdr);
3493 return -EIO;
3494}
3495
3496static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3497{
3498 __be32 *p;
3499 int status = 0;
3500
3501 *res = 0;
3502 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3503 return -EIO;
3504 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3505 p = xdr_inline_decode(xdr, 8);
3506 if (unlikely(!p))
3507 goto out_overflow;
3508 xdr_decode_hyper(p, res);
3509 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3510 }
3511 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3512 return status;
3513out_overflow:
3514 print_overflow_msg(__func__, xdr);
3515 return -EIO;
3516}
3517
3518static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3519{
3520 __be32 *p;
3521 int status = 0;
3522
3523 *res = 0;
3524 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3525 return -EIO;
3526 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3527 p = xdr_inline_decode(xdr, 8);
3528 if (unlikely(!p))
3529 goto out_overflow;
3530 xdr_decode_hyper(p, res);
3531 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3532 }
3533 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3534 return status;
3535out_overflow:
3536 print_overflow_msg(__func__, xdr);
3537 return -EIO;
3538}
3539
3540static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3541{
3542 __be32 *p;
3543 int status = 0;
3544
3545 *res = 0;
3546 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3547 return -EIO;
3548 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3549 p = xdr_inline_decode(xdr, 8);
3550 if (unlikely(!p))
3551 goto out_overflow;
3552 xdr_decode_hyper(p, res);
3553 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3554 }
3555 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3556 return status;
3557out_overflow:
3558 print_overflow_msg(__func__, xdr);
3559 return -EIO;
3560}
3561
3562static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3563{
3564 u32 n;
3565 __be32 *p;
3566 int status = 0;
3567
3568 p = xdr_inline_decode(xdr, 4);
3569 if (unlikely(!p))
3570 goto out_overflow;
3571 n = be32_to_cpup(p);
3572 if (n == 0)
3573 goto root_path;
3574 dprintk("pathname4: ");
3575 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3576 dprintk("cannot parse %d components in path\n", n);
3577 goto out_eio;
3578 }
3579 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3580 struct nfs4_string *component = &path->components[path->ncomponents];
3581 status = decode_opaque_inline(xdr, &component->len, &component->data);
3582 if (unlikely(status != 0))
3583 goto out_eio;
3584 ifdebug (XDR)
3585 pr_cont("%s%.*s ",
3586 (path->ncomponents != n ? "/ " : ""),
3587 component->len, component->data);
3588 }
3589out:
3590 return status;
3591root_path:
3592/* a root pathname is sent as a zero component4 */
3593 path->ncomponents = 1;
3594 path->components[0].len=0;
3595 path->components[0].data=NULL;
3596 dprintk("pathname4: /\n");
3597 goto out;
3598out_eio:
3599 dprintk(" status %d", status);
3600 status = -EIO;
3601 goto out;
3602out_overflow:
3603 print_overflow_msg(__func__, xdr);
3604 return -EIO;
3605}
3606
3607static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3608{
3609 int n;
3610 __be32 *p;
3611 int status = -EIO;
3612
3613 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3614 goto out;
3615 status = 0;
3616 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3617 goto out;
3618 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3619 status = -EIO;
3620 /* Ignore borken servers that return unrequested attrs */
3621 if (unlikely(res == NULL))
3622 goto out;
3623 dprintk("%s: fsroot:\n", __func__);
3624 status = decode_pathname(xdr, &res->fs_path);
3625 if (unlikely(status != 0))
3626 goto out;
3627 p = xdr_inline_decode(xdr, 4);
3628 if (unlikely(!p))
3629 goto out_overflow;
3630 n = be32_to_cpup(p);
3631 if (n <= 0)
3632 goto out_eio;
3633 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3634 u32 m;
3635 struct nfs4_fs_location *loc;
3636
3637 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3638 break;
3639 loc = &res->locations[res->nlocations];
3640 p = xdr_inline_decode(xdr, 4);
3641 if (unlikely(!p))
3642 goto out_overflow;
3643 m = be32_to_cpup(p);
3644
3645 dprintk("%s: servers:\n", __func__);
3646 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3647 struct nfs4_string *server;
3648
3649 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3650 unsigned int i;
3651 dprintk("%s: using first %u of %u servers "
3652 "returned for location %u\n",
3653 __func__,
3654 NFS4_FS_LOCATION_MAXSERVERS,
3655 m, res->nlocations);
3656 for (i = loc->nservers; i < m; i++) {
3657 unsigned int len;
3658 char *data;
3659 status = decode_opaque_inline(xdr, &len, &data);
3660 if (unlikely(status != 0))
3661 goto out_eio;
3662 }
3663 break;
3664 }
3665 server = &loc->servers[loc->nservers];
3666 status = decode_opaque_inline(xdr, &server->len, &server->data);
3667 if (unlikely(status != 0))
3668 goto out_eio;
3669 dprintk("%s ", server->data);
3670 }
3671 status = decode_pathname(xdr, &loc->rootpath);
3672 if (unlikely(status != 0))
3673 goto out_eio;
3674 }
3675 if (res->nlocations != 0)
3676 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3677out:
3678 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3679 return status;
3680out_overflow:
3681 print_overflow_msg(__func__, xdr);
3682out_eio:
3683 status = -EIO;
3684 goto out;
3685}
3686
3687static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3688{
3689 __be32 *p;
3690 int status = 0;
3691
3692 *res = 0;
3693 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3694 return -EIO;
3695 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3696 p = xdr_inline_decode(xdr, 8);
3697 if (unlikely(!p))
3698 goto out_overflow;
3699 xdr_decode_hyper(p, res);
3700 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3701 }
3702 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3703 return status;
3704out_overflow:
3705 print_overflow_msg(__func__, xdr);
3706 return -EIO;
3707}
3708
3709static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3710{
3711 __be32 *p;
3712 int status = 0;
3713
3714 *maxlink = 1;
3715 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3716 return -EIO;
3717 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3718 p = xdr_inline_decode(xdr, 4);
3719 if (unlikely(!p))
3720 goto out_overflow;
3721 *maxlink = be32_to_cpup(p);
3722 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3723 }
3724 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3725 return status;
3726out_overflow:
3727 print_overflow_msg(__func__, xdr);
3728 return -EIO;
3729}
3730
3731static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3732{
3733 __be32 *p;
3734 int status = 0;
3735
3736 *maxname = 1024;
3737 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3738 return -EIO;
3739 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3740 p = xdr_inline_decode(xdr, 4);
3741 if (unlikely(!p))
3742 goto out_overflow;
3743 *maxname = be32_to_cpup(p);
3744 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3745 }
3746 dprintk("%s: maxname=%u\n", __func__, *maxname);
3747 return status;
3748out_overflow:
3749 print_overflow_msg(__func__, xdr);
3750 return -EIO;
3751}
3752
3753static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3754{
3755 __be32 *p;
3756 int status = 0;
3757
3758 *res = 1024;
3759 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3760 return -EIO;
3761 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3762 uint64_t maxread;
3763 p = xdr_inline_decode(xdr, 8);
3764 if (unlikely(!p))
3765 goto out_overflow;
3766 xdr_decode_hyper(p, &maxread);
3767 if (maxread > 0x7FFFFFFF)
3768 maxread = 0x7FFFFFFF;
3769 *res = (uint32_t)maxread;
3770 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3771 }
3772 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3773 return status;
3774out_overflow:
3775 print_overflow_msg(__func__, xdr);
3776 return -EIO;
3777}
3778
3779static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3780{
3781 __be32 *p;
3782 int status = 0;
3783
3784 *res = 1024;
3785 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3786 return -EIO;
3787 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3788 uint64_t maxwrite;
3789 p = xdr_inline_decode(xdr, 8);
3790 if (unlikely(!p))
3791 goto out_overflow;
3792 xdr_decode_hyper(p, &maxwrite);
3793 if (maxwrite > 0x7FFFFFFF)
3794 maxwrite = 0x7FFFFFFF;
3795 *res = (uint32_t)maxwrite;
3796 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3797 }
3798 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3799 return status;
3800out_overflow:
3801 print_overflow_msg(__func__, xdr);
3802 return -EIO;
3803}
3804
3805static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3806{
3807 uint32_t tmp;
3808 __be32 *p;
3809 int ret = 0;
3810
3811 *mode = 0;
3812 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3813 return -EIO;
3814 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3815 p = xdr_inline_decode(xdr, 4);
3816 if (unlikely(!p))
3817 goto out_overflow;
3818 tmp = be32_to_cpup(p);
3819 *mode = tmp & ~S_IFMT;
3820 bitmap[1] &= ~FATTR4_WORD1_MODE;
3821 ret = NFS_ATTR_FATTR_MODE;
3822 }
3823 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3824 return ret;
3825out_overflow:
3826 print_overflow_msg(__func__, xdr);
3827 return -EIO;
3828}
3829
3830static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3831{
3832 __be32 *p;
3833 int ret = 0;
3834
3835 *nlink = 1;
3836 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3837 return -EIO;
3838 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3839 p = xdr_inline_decode(xdr, 4);
3840 if (unlikely(!p))
3841 goto out_overflow;
3842 *nlink = be32_to_cpup(p);
3843 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3844 ret = NFS_ATTR_FATTR_NLINK;
3845 }
3846 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3847 return ret;
3848out_overflow:
3849 print_overflow_msg(__func__, xdr);
3850 return -EIO;
3851}
3852
3853static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3854 const struct nfs_server *server, kuid_t *uid,
3855 struct nfs4_string *owner_name)
3856{
3857 uint32_t len;
3858 __be32 *p;
3859 int ret = 0;
3860
3861 *uid = make_kuid(&init_user_ns, -2);
3862 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3863 return -EIO;
3864 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3865 p = xdr_inline_decode(xdr, 4);
3866 if (unlikely(!p))
3867 goto out_overflow;
3868 len = be32_to_cpup(p);
3869 p = xdr_inline_decode(xdr, len);
3870 if (unlikely(!p))
3871 goto out_overflow;
3872 if (owner_name != NULL) {
3873 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3874 if (owner_name->data != NULL) {
3875 owner_name->len = len;
3876 ret = NFS_ATTR_FATTR_OWNER_NAME;
3877 }
3878 } else if (len < XDR_MAX_NETOBJ) {
3879 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3880 ret = NFS_ATTR_FATTR_OWNER;
3881 else
3882 dprintk("%s: nfs_map_name_to_uid failed!\n",
3883 __func__);
3884 } else
3885 dprintk("%s: name too long (%u)!\n",
3886 __func__, len);
3887 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3888 }
3889 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3890 return ret;
3891out_overflow:
3892 print_overflow_msg(__func__, xdr);
3893 return -EIO;
3894}
3895
3896static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3897 const struct nfs_server *server, kgid_t *gid,
3898 struct nfs4_string *group_name)
3899{
3900 uint32_t len;
3901 __be32 *p;
3902 int ret = 0;
3903
3904 *gid = make_kgid(&init_user_ns, -2);
3905 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3906 return -EIO;
3907 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3908 p = xdr_inline_decode(xdr, 4);
3909 if (unlikely(!p))
3910 goto out_overflow;
3911 len = be32_to_cpup(p);
3912 p = xdr_inline_decode(xdr, len);
3913 if (unlikely(!p))
3914 goto out_overflow;
3915 if (group_name != NULL) {
3916 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3917 if (group_name->data != NULL) {
3918 group_name->len = len;
3919 ret = NFS_ATTR_FATTR_GROUP_NAME;
3920 }
3921 } else if (len < XDR_MAX_NETOBJ) {
3922 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3923 ret = NFS_ATTR_FATTR_GROUP;
3924 else
3925 dprintk("%s: nfs_map_group_to_gid failed!\n",
3926 __func__);
3927 } else
3928 dprintk("%s: name too long (%u)!\n",
3929 __func__, len);
3930 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3931 }
3932 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3933 return ret;
3934out_overflow:
3935 print_overflow_msg(__func__, xdr);
3936 return -EIO;
3937}
3938
3939static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3940{
3941 uint32_t major = 0, minor = 0;
3942 __be32 *p;
3943 int ret = 0;
3944
3945 *rdev = MKDEV(0,0);
3946 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3947 return -EIO;
3948 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3949 dev_t tmp;
3950
3951 p = xdr_inline_decode(xdr, 8);
3952 if (unlikely(!p))
3953 goto out_overflow;
3954 major = be32_to_cpup(p++);
3955 minor = be32_to_cpup(p);
3956 tmp = MKDEV(major, minor);
3957 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3958 *rdev = tmp;
3959 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3960 ret = NFS_ATTR_FATTR_RDEV;
3961 }
3962 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3963 return ret;
3964out_overflow:
3965 print_overflow_msg(__func__, xdr);
3966 return -EIO;
3967}
3968
3969static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3970{
3971 __be32 *p;
3972 int status = 0;
3973
3974 *res = 0;
3975 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3976 return -EIO;
3977 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3978 p = xdr_inline_decode(xdr, 8);
3979 if (unlikely(!p))
3980 goto out_overflow;
3981 xdr_decode_hyper(p, res);
3982 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3983 }
3984 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3985 return status;
3986out_overflow:
3987 print_overflow_msg(__func__, xdr);
3988 return -EIO;
3989}
3990
3991static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3992{
3993 __be32 *p;
3994 int status = 0;
3995
3996 *res = 0;
3997 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3998 return -EIO;
3999 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4000 p = xdr_inline_decode(xdr, 8);
4001 if (unlikely(!p))
4002 goto out_overflow;
4003 xdr_decode_hyper(p, res);
4004 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4005 }
4006 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4007 return status;
4008out_overflow:
4009 print_overflow_msg(__func__, xdr);
4010 return -EIO;
4011}
4012
4013static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4014{
4015 __be32 *p;
4016 int status = 0;
4017
4018 *res = 0;
4019 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4020 return -EIO;
4021 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4022 p = xdr_inline_decode(xdr, 8);
4023 if (unlikely(!p))
4024 goto out_overflow;
4025 xdr_decode_hyper(p, res);
4026 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4027 }
4028 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4029 return status;
4030out_overflow:
4031 print_overflow_msg(__func__, xdr);
4032 return -EIO;
4033}
4034
4035static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4036{
4037 __be32 *p;
4038 int ret = 0;
4039
4040 *used = 0;
4041 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4042 return -EIO;
4043 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4044 p = xdr_inline_decode(xdr, 8);
4045 if (unlikely(!p))
4046 goto out_overflow;
4047 xdr_decode_hyper(p, used);
4048 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4049 ret = NFS_ATTR_FATTR_SPACE_USED;
4050 }
4051 dprintk("%s: space used=%Lu\n", __func__,
4052 (unsigned long long)*used);
4053 return ret;
4054out_overflow:
4055 print_overflow_msg(__func__, xdr);
4056 return -EIO;
4057}
4058
4059static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4060{
4061 __be32 *p;
4062 uint64_t sec;
4063 uint32_t nsec;
4064
4065 p = xdr_inline_decode(xdr, 12);
4066 if (unlikely(!p))
4067 goto out_overflow;
4068 p = xdr_decode_hyper(p, &sec);
4069 nsec = be32_to_cpup(p);
4070 time->tv_sec = (time_t)sec;
4071 time->tv_nsec = (long)nsec;
4072 return 0;
4073out_overflow:
4074 print_overflow_msg(__func__, xdr);
4075 return -EIO;
4076}
4077
4078static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4079{
4080 int status = 0;
4081
4082 time->tv_sec = 0;
4083 time->tv_nsec = 0;
4084 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4085 return -EIO;
4086 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4087 status = decode_attr_time(xdr, time);
4088 if (status == 0)
4089 status = NFS_ATTR_FATTR_ATIME;
4090 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4091 }
4092 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4093 return status;
4094}
4095
4096static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4097{
4098 int status = 0;
4099
4100 time->tv_sec = 0;
4101 time->tv_nsec = 0;
4102 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4103 return -EIO;
4104 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4105 status = decode_attr_time(xdr, time);
4106 if (status == 0)
4107 status = NFS_ATTR_FATTR_CTIME;
4108 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4109 }
4110 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4111 return status;
4112}
4113
4114static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4115 struct timespec *time)
4116{
4117 int status = 0;
4118
4119 time->tv_sec = 0;
4120 time->tv_nsec = 0;
4121 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4122 return -EIO;
4123 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4124 status = decode_attr_time(xdr, time);
4125 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4126 }
4127 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4128 (long)time->tv_nsec);
4129 return status;
4130}
4131
4132static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4133 struct nfs4_label *label)
4134{
4135 uint32_t pi = 0;
4136 uint32_t lfs = 0;
4137 __u32 len;
4138 __be32 *p;
4139 int status = 0;
4140
4141 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4142 return -EIO;
4143 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4144 p = xdr_inline_decode(xdr, 4);
4145 if (unlikely(!p))
4146 goto out_overflow;
4147 lfs = be32_to_cpup(p++);
4148 p = xdr_inline_decode(xdr, 4);
4149 if (unlikely(!p))
4150 goto out_overflow;
4151 pi = be32_to_cpup(p++);
4152 p = xdr_inline_decode(xdr, 4);
4153 if (unlikely(!p))
4154 goto out_overflow;
4155 len = be32_to_cpup(p++);
4156 p = xdr_inline_decode(xdr, len);
4157 if (unlikely(!p))
4158 goto out_overflow;
4159 if (len < NFS4_MAXLABELLEN) {
4160 if (label) {
4161 memcpy(label->label, p, len);
4162 label->len = len;
4163 label->pi = pi;
4164 label->lfs = lfs;
4165 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4166 }
4167 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4168 } else
4169 printk(KERN_WARNING "%s: label too long (%u)!\n",
4170 __func__, len);
4171 }
4172 if (label && label->label)
4173 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4174 (char *)label->label, label->len, label->pi, label->lfs);
4175 return status;
4176
4177out_overflow:
4178 print_overflow_msg(__func__, xdr);
4179 return -EIO;
4180}
4181
4182static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4183{
4184 int status = 0;
4185
4186 time->tv_sec = 0;
4187 time->tv_nsec = 0;
4188 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4189 return -EIO;
4190 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4191 status = decode_attr_time(xdr, time);
4192 if (status == 0)
4193 status = NFS_ATTR_FATTR_MTIME;
4194 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4195 }
4196 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4197 return status;
4198}
4199
4200static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4201{
4202 unsigned int attrwords = XDR_QUADLEN(attrlen);
4203 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4204
4205 if (unlikely(attrwords != nwords)) {
4206 dprintk("%s: server returned incorrect attribute length: "
4207 "%u %c %u\n",
4208 __func__,
4209 attrwords << 2,
4210 (attrwords < nwords) ? '<' : '>',
4211 nwords << 2);
4212 return -EIO;
4213 }
4214 return 0;
4215}
4216
4217static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4218{
4219 __be32 *p;
4220
4221 p = xdr_inline_decode(xdr, 20);
4222 if (unlikely(!p))
4223 goto out_overflow;
4224 cinfo->atomic = be32_to_cpup(p++);
4225 p = xdr_decode_hyper(p, &cinfo->before);
4226 xdr_decode_hyper(p, &cinfo->after);
4227 return 0;
4228out_overflow:
4229 print_overflow_msg(__func__, xdr);
4230 return -EIO;
4231}
4232
4233static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4234{
4235 __be32 *p;
4236 uint32_t supp, acc;
4237 int status;
4238
4239 status = decode_op_hdr(xdr, OP_ACCESS);
4240 if (status)
4241 return status;
4242 p = xdr_inline_decode(xdr, 8);
4243 if (unlikely(!p))
4244 goto out_overflow;
4245 supp = be32_to_cpup(p++);
4246 acc = be32_to_cpup(p);
4247 *supported = supp;
4248 *access = acc;
4249 return 0;
4250out_overflow:
4251 print_overflow_msg(__func__, xdr);
4252 return -EIO;
4253}
4254
4255static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4256{
4257 __be32 *p;
4258
4259 p = xdr_inline_decode(xdr, len);
4260 if (likely(p)) {
4261 memcpy(buf, p, len);
4262 return 0;
4263 }
4264 print_overflow_msg(__func__, xdr);
4265 return -EIO;
4266}
4267
4268static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4269{
4270 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4271}
4272
4273static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4274{
4275 int status;
4276
4277 status = decode_op_hdr(xdr, OP_CLOSE);
4278 if (status != -EIO)
4279 nfs_increment_open_seqid(status, res->seqid);
4280 if (!status)
4281 status = decode_stateid(xdr, &res->stateid);
4282 return status;
4283}
4284
4285static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4286{
4287 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4288}
4289
4290static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4291{
4292 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4293}
4294
4295static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4296{
4297 int status;
4298
4299 status = decode_op_hdr(xdr, OP_COMMIT);
4300 if (!status)
4301 status = decode_write_verifier(xdr, &res->verf->verifier);
4302 return status;
4303}
4304
4305static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4306{
4307 __be32 *p;
4308 uint32_t bmlen;
4309 int status;
4310
4311 status = decode_op_hdr(xdr, OP_CREATE);
4312 if (status)
4313 return status;
4314 if ((status = decode_change_info(xdr, cinfo)))
4315 return status;
4316 p = xdr_inline_decode(xdr, 4);
4317 if (unlikely(!p))
4318 goto out_overflow;
4319 bmlen = be32_to_cpup(p);
4320 p = xdr_inline_decode(xdr, bmlen << 2);
4321 if (likely(p))
4322 return 0;
4323out_overflow:
4324 print_overflow_msg(__func__, xdr);
4325 return -EIO;
4326}
4327
4328static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4329{
4330 unsigned int savep;
4331 uint32_t attrlen, bitmap[3] = {0};
4332 int status;
4333
4334 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4335 goto xdr_error;
4336 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4337 goto xdr_error;
4338 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4339 goto xdr_error;
4340 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4341 goto xdr_error;
4342 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4343 &res->fh_expire_type)) != 0)
4344 goto xdr_error;
4345 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4346 goto xdr_error;
4347 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4348 goto xdr_error;
4349 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4350 goto xdr_error;
4351 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4352 res->exclcreat_bitmask)) != 0)
4353 goto xdr_error;
4354 status = verify_attr_len(xdr, savep, attrlen);
4355xdr_error:
4356 dprintk("%s: xdr returned %d!\n", __func__, -status);
4357 return status;
4358}
4359
4360static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4361{
4362 unsigned int savep;
4363 uint32_t attrlen, bitmap[3] = {0};
4364 int status;
4365
4366 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4367 goto xdr_error;
4368 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4369 goto xdr_error;
4370 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4371 goto xdr_error;
4372
4373 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4374 goto xdr_error;
4375 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4376 goto xdr_error;
4377 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4378 goto xdr_error;
4379
4380 status = -EIO;
4381 if (unlikely(bitmap[0]))
4382 goto xdr_error;
4383
4384 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4385 goto xdr_error;
4386 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4387 goto xdr_error;
4388 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4389 goto xdr_error;
4390
4391 status = verify_attr_len(xdr, savep, attrlen);
4392xdr_error:
4393 dprintk("%s: xdr returned %d!\n", __func__, -status);
4394 return status;
4395}
4396
4397static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4398{
4399 unsigned int savep;
4400 uint32_t attrlen, bitmap[3] = {0};
4401 int status;
4402
4403 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4404 goto xdr_error;
4405 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4406 goto xdr_error;
4407 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4408 goto xdr_error;
4409
4410 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4411 goto xdr_error;
4412 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4413 goto xdr_error;
4414
4415 status = verify_attr_len(xdr, savep, attrlen);
4416xdr_error:
4417 dprintk("%s: xdr returned %d!\n", __func__, -status);
4418 return status;
4419}
4420
4421static int decode_threshold_hint(struct xdr_stream *xdr,
4422 uint32_t *bitmap,
4423 uint64_t *res,
4424 uint32_t hint_bit)
4425{
4426 __be32 *p;
4427
4428 *res = 0;
4429 if (likely(bitmap[0] & hint_bit)) {
4430 p = xdr_inline_decode(xdr, 8);
4431 if (unlikely(!p))
4432 goto out_overflow;
4433 xdr_decode_hyper(p, res);
4434 }
4435 return 0;
4436out_overflow:
4437 print_overflow_msg(__func__, xdr);
4438 return -EIO;
4439}
4440
4441static int decode_first_threshold_item4(struct xdr_stream *xdr,
4442 struct nfs4_threshold *res)
4443{
4444 __be32 *p;
4445 unsigned int savep;
4446 uint32_t bitmap[3] = {0,}, attrlen;
4447 int status;
4448
4449 /* layout type */
4450 p = xdr_inline_decode(xdr, 4);
4451 if (unlikely(!p)) {
4452 print_overflow_msg(__func__, xdr);
4453 return -EIO;
4454 }
4455 res->l_type = be32_to_cpup(p);
4456
4457 /* thi_hintset bitmap */
4458 status = decode_attr_bitmap(xdr, bitmap);
4459 if (status < 0)
4460 goto xdr_error;
4461
4462 /* thi_hintlist length */
4463 status = decode_attr_length(xdr, &attrlen, &savep);
4464 if (status < 0)
4465 goto xdr_error;
4466 /* thi_hintlist */
4467 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4468 if (status < 0)
4469 goto xdr_error;
4470 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4471 if (status < 0)
4472 goto xdr_error;
4473 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4474 THRESHOLD_RD_IO);
4475 if (status < 0)
4476 goto xdr_error;
4477 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4478 THRESHOLD_WR_IO);
4479 if (status < 0)
4480 goto xdr_error;
4481
4482 status = verify_attr_len(xdr, savep, attrlen);
4483 res->bm = bitmap[0];
4484
4485 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4486 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4487 res->wr_io_sz);
4488xdr_error:
4489 dprintk("%s ret=%d!\n", __func__, status);
4490 return status;
4491}
4492
4493/*
4494 * Thresholds on pNFS direct I/O vrs MDS I/O
4495 */
4496static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4497 uint32_t *bitmap,
4498 struct nfs4_threshold *res)
4499{
4500 __be32 *p;
4501 int status = 0;
4502 uint32_t num;
4503
4504 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4505 return -EIO;
4506 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4507 /* Did the server return an unrequested attribute? */
4508 if (unlikely(res == NULL))
4509 return -EREMOTEIO;
4510 p = xdr_inline_decode(xdr, 4);
4511 if (unlikely(!p))
4512 goto out_overflow;
4513 num = be32_to_cpup(p);
4514 if (num == 0)
4515 return 0;
4516 if (num > 1)
4517 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4518 "drivers per filesystem not supported\n",
4519 __func__);
4520
4521 status = decode_first_threshold_item4(xdr, res);
4522 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4523 }
4524 return status;
4525out_overflow:
4526 print_overflow_msg(__func__, xdr);
4527 return -EIO;
4528}
4529
4530static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4531 struct nfs_fattr *fattr, struct nfs_fh *fh,
4532 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4533 const struct nfs_server *server)
4534{
4535 int status;
4536 umode_t fmode = 0;
4537 uint32_t type;
4538 int32_t err;
4539
4540 status = decode_attr_type(xdr, bitmap, &type);
4541 if (status < 0)
4542 goto xdr_error;
4543 fattr->mode = 0;
4544 if (status != 0) {
4545 fattr->mode |= nfs_type2fmt[type];
4546 fattr->valid |= status;
4547 }
4548
4549 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4550 if (status < 0)
4551 goto xdr_error;
4552 fattr->valid |= status;
4553
4554 status = decode_attr_size(xdr, bitmap, &fattr->size);
4555 if (status < 0)
4556 goto xdr_error;
4557 fattr->valid |= status;
4558
4559 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4560 if (status < 0)
4561 goto xdr_error;
4562 fattr->valid |= status;
4563
4564 err = 0;
4565 status = decode_attr_error(xdr, bitmap, &err);
4566 if (status < 0)
4567 goto xdr_error;
4568
4569 status = decode_attr_filehandle(xdr, bitmap, fh);
4570 if (status < 0)
4571 goto xdr_error;
4572
4573 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4574 if (status < 0)
4575 goto xdr_error;
4576 fattr->valid |= status;
4577
4578 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4579 if (status < 0)
4580 goto xdr_error;
4581 fattr->valid |= status;
4582
4583 status = -EIO;
4584 if (unlikely(bitmap[0]))
4585 goto xdr_error;
4586
4587 status = decode_attr_mode(xdr, bitmap, &fmode);
4588 if (status < 0)
4589 goto xdr_error;
4590 if (status != 0) {
4591 fattr->mode |= fmode;
4592 fattr->valid |= status;
4593 }
4594
4595 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4596 if (status < 0)
4597 goto xdr_error;
4598 fattr->valid |= status;
4599
4600 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4601 if (status < 0)
4602 goto xdr_error;
4603 fattr->valid |= status;
4604
4605 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4606 if (status < 0)
4607 goto xdr_error;
4608 fattr->valid |= status;
4609
4610 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4611 if (status < 0)
4612 goto xdr_error;
4613 fattr->valid |= status;
4614
4615 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4616 if (status < 0)
4617 goto xdr_error;
4618 fattr->valid |= status;
4619
4620 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4621 if (status < 0)
4622 goto xdr_error;
4623 fattr->valid |= status;
4624
4625 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4626 if (status < 0)
4627 goto xdr_error;
4628 fattr->valid |= status;
4629
4630 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4631 if (status < 0)
4632 goto xdr_error;
4633 fattr->valid |= status;
4634
4635 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4636 if (status < 0)
4637 goto xdr_error;
4638 fattr->valid |= status;
4639
4640 status = -EIO;
4641 if (unlikely(bitmap[1]))
4642 goto xdr_error;
4643
4644 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4645 if (status < 0)
4646 goto xdr_error;
4647
4648 if (label) {
4649 status = decode_attr_security_label(xdr, bitmap, label);
4650 if (status < 0)
4651 goto xdr_error;
4652 fattr->valid |= status;
4653 }
4654
4655xdr_error:
4656 dprintk("%s: xdr returned %d\n", __func__, -status);
4657 return status;
4658}
4659
4660static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4661 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4662 struct nfs4_label *label, const struct nfs_server *server)
4663{
4664 unsigned int savep;
4665 uint32_t attrlen,
4666 bitmap[3] = {0};
4667 int status;
4668
4669 status = decode_op_hdr(xdr, OP_GETATTR);
4670 if (status < 0)
4671 goto xdr_error;
4672
4673 status = decode_attr_bitmap(xdr, bitmap);
4674 if (status < 0)
4675 goto xdr_error;
4676
4677 status = decode_attr_length(xdr, &attrlen, &savep);
4678 if (status < 0)
4679 goto xdr_error;
4680
4681 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4682 label, server);
4683 if (status < 0)
4684 goto xdr_error;
4685
4686 status = verify_attr_len(xdr, savep, attrlen);
4687xdr_error:
4688 dprintk("%s: xdr returned %d\n", __func__, -status);
4689 return status;
4690}
4691
4692static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4693 struct nfs4_label *label, const struct nfs_server *server)
4694{
4695 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4696}
4697
4698static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4699 const struct nfs_server *server)
4700{
4701 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4702}
4703
4704/*
4705 * Decode potentially multiple layout types. Currently we only support
4706 * one layout driver per file system.
4707 */
4708static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4709 uint32_t *layouttype)
4710{
4711 __be32 *p;
4712 int num;
4713
4714 p = xdr_inline_decode(xdr, 4);
4715 if (unlikely(!p))
4716 goto out_overflow;
4717 num = be32_to_cpup(p);
4718
4719 /* pNFS is not supported by the underlying file system */
4720 if (num == 0) {
4721 *layouttype = 0;
4722 return 0;
4723 }
4724 if (num > 1)
4725 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4726 "drivers per filesystem not supported\n", __func__);
4727
4728 /* Decode and set first layout type, move xdr->p past unused types */
4729 p = xdr_inline_decode(xdr, num * 4);
4730 if (unlikely(!p))
4731 goto out_overflow;
4732 *layouttype = be32_to_cpup(p);
4733 return 0;
4734out_overflow:
4735 print_overflow_msg(__func__, xdr);
4736 return -EIO;
4737}
4738
4739/*
4740 * The type of file system exported.
4741 * Note we must ensure that layouttype is set in any non-error case.
4742 */
4743static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4744 uint32_t *layouttype)
4745{
4746 int status = 0;
4747
4748 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4749 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4750 return -EIO;
4751 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4752 status = decode_first_pnfs_layout_type(xdr, layouttype);
4753 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4754 } else
4755 *layouttype = 0;
4756 return status;
4757}
4758
4759/*
4760 * The prefered block size for layout directed io
4761 */
4762static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4763 uint32_t *res)
4764{
4765 __be32 *p;
4766
4767 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4768 *res = 0;
4769 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4770 p = xdr_inline_decode(xdr, 4);
4771 if (unlikely(!p)) {
4772 print_overflow_msg(__func__, xdr);
4773 return -EIO;
4774 }
4775 *res = be32_to_cpup(p);
4776 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4777 }
4778 return 0;
4779}
4780
4781/*
4782 * The granularity of a CLONE operation.
4783 */
4784static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4785 uint32_t *res)
4786{
4787 __be32 *p;
4788
4789 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4790 *res = 0;
4791 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4792 p = xdr_inline_decode(xdr, 4);
4793 if (unlikely(!p)) {
4794 print_overflow_msg(__func__, xdr);
4795 return -EIO;
4796 }
4797 *res = be32_to_cpup(p);
4798 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4799 }
4800 return 0;
4801}
4802
4803static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4804{
4805 unsigned int savep;
4806 uint32_t attrlen, bitmap[3];
4807 int status;
4808
4809 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4810 goto xdr_error;
4811 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4812 goto xdr_error;
4813 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4814 goto xdr_error;
4815
4816 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4817
4818 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4819 goto xdr_error;
4820 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4821 goto xdr_error;
4822 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4823 goto xdr_error;
4824 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4825 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4826 goto xdr_error;
4827 fsinfo->wtpref = fsinfo->wtmax;
4828
4829 status = -EIO;
4830 if (unlikely(bitmap[0]))
4831 goto xdr_error;
4832
4833 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4834 if (status != 0)
4835 goto xdr_error;
4836 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4837 if (status != 0)
4838 goto xdr_error;
4839
4840 status = -EIO;
4841 if (unlikely(bitmap[1]))
4842 goto xdr_error;
4843
4844 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4845 if (status)
4846 goto xdr_error;
4847 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4848 if (status)
4849 goto xdr_error;
4850
4851 status = verify_attr_len(xdr, savep, attrlen);
4852xdr_error:
4853 dprintk("%s: xdr returned %d!\n", __func__, -status);
4854 return status;
4855}
4856
4857static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4858{
4859 __be32 *p;
4860 uint32_t len;
4861 int status;
4862
4863 /* Zero handle first to allow comparisons */
4864 memset(fh, 0, sizeof(*fh));
4865
4866 status = decode_op_hdr(xdr, OP_GETFH);
4867 if (status)
4868 return status;
4869
4870 p = xdr_inline_decode(xdr, 4);
4871 if (unlikely(!p))
4872 goto out_overflow;
4873 len = be32_to_cpup(p);
4874 if (len > NFS4_FHSIZE)
4875 return -EIO;
4876 fh->size = len;
4877 p = xdr_inline_decode(xdr, len);
4878 if (unlikely(!p))
4879 goto out_overflow;
4880 memcpy(fh->data, p, len);
4881 return 0;
4882out_overflow:
4883 print_overflow_msg(__func__, xdr);
4884 return -EIO;
4885}
4886
4887static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4888{
4889 int status;
4890
4891 status = decode_op_hdr(xdr, OP_LINK);
4892 if (status)
4893 return status;
4894 return decode_change_info(xdr, cinfo);
4895}
4896
4897/*
4898 * We create the owner, so we know a proper owner.id length is 4.
4899 */
4900static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4901{
4902 uint64_t offset, length, clientid;
4903 __be32 *p;
4904 uint32_t namelen, type;
4905
4906 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4907 if (unlikely(!p))
4908 goto out_overflow;
4909 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4910 p = xdr_decode_hyper(p, &length);
4911 type = be32_to_cpup(p++); /* 4 byte read */
4912 if (fl != NULL) { /* manipulate file lock */
4913 fl->fl_start = (loff_t)offset;
4914 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4915 if (length == ~(uint64_t)0)
4916 fl->fl_end = OFFSET_MAX;
4917 fl->fl_type = F_WRLCK;
4918 if (type & 1)
4919 fl->fl_type = F_RDLCK;
4920 fl->fl_pid = 0;
4921 }
4922 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4923 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4924 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4925 if (likely(p))
4926 return -NFS4ERR_DENIED;
4927out_overflow:
4928 print_overflow_msg(__func__, xdr);
4929 return -EIO;
4930}
4931
4932static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4933{
4934 int status;
4935
4936 status = decode_op_hdr(xdr, OP_LOCK);
4937 if (status == -EIO)
4938 goto out;
4939 if (status == 0) {
4940 status = decode_stateid(xdr, &res->stateid);
4941 if (unlikely(status))
4942 goto out;
4943 } else if (status == -NFS4ERR_DENIED)
4944 status = decode_lock_denied(xdr, NULL);
4945 if (res->open_seqid != NULL)
4946 nfs_increment_open_seqid(status, res->open_seqid);
4947 nfs_increment_lock_seqid(status, res->lock_seqid);
4948out:
4949 return status;
4950}
4951
4952static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4953{
4954 int status;
4955 status = decode_op_hdr(xdr, OP_LOCKT);
4956 if (status == -NFS4ERR_DENIED)
4957 return decode_lock_denied(xdr, res->denied);
4958 return status;
4959}
4960
4961static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4962{
4963 int status;
4964
4965 status = decode_op_hdr(xdr, OP_LOCKU);
4966 if (status != -EIO)
4967 nfs_increment_lock_seqid(status, res->seqid);
4968 if (status == 0)
4969 status = decode_stateid(xdr, &res->stateid);
4970 return status;
4971}
4972
4973static int decode_release_lockowner(struct xdr_stream *xdr)
4974{
4975 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4976}
4977
4978static int decode_lookup(struct xdr_stream *xdr)
4979{
4980 return decode_op_hdr(xdr, OP_LOOKUP);
4981}
4982
4983/* This is too sick! */
4984static int decode_space_limit(struct xdr_stream *xdr,
4985 unsigned long *pagemod_limit)
4986{
4987 __be32 *p;
4988 uint32_t limit_type, nblocks, blocksize;
4989 u64 maxsize = 0;
4990
4991 p = xdr_inline_decode(xdr, 12);
4992 if (unlikely(!p))
4993 goto out_overflow;
4994 limit_type = be32_to_cpup(p++);
4995 switch (limit_type) {
4996 case NFS4_LIMIT_SIZE:
4997 xdr_decode_hyper(p, &maxsize);
4998 break;
4999 case NFS4_LIMIT_BLOCKS:
5000 nblocks = be32_to_cpup(p++);
5001 blocksize = be32_to_cpup(p);
5002 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5003 }
5004 maxsize >>= PAGE_SHIFT;
5005 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5006 return 0;
5007out_overflow:
5008 print_overflow_msg(__func__, xdr);
5009 return -EIO;
5010}
5011
5012static int decode_rw_delegation(struct xdr_stream *xdr,
5013 uint32_t delegation_type,
5014 struct nfs_openres *res)
5015{
5016 __be32 *p;
5017 int status;
5018
5019 status = decode_stateid(xdr, &res->delegation);
5020 if (unlikely(status))
5021 return status;
5022 p = xdr_inline_decode(xdr, 4);
5023 if (unlikely(!p))
5024 goto out_overflow;
5025 res->do_recall = be32_to_cpup(p);
5026
5027 switch (delegation_type) {
5028 case NFS4_OPEN_DELEGATE_READ:
5029 res->delegation_type = FMODE_READ;
5030 break;
5031 case NFS4_OPEN_DELEGATE_WRITE:
5032 res->delegation_type = FMODE_WRITE|FMODE_READ;
5033 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5034 return -EIO;
5035 }
5036 return decode_ace(xdr, NULL, res->server->nfs_client);
5037out_overflow:
5038 print_overflow_msg(__func__, xdr);
5039 return -EIO;
5040}
5041
5042static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5043{
5044 __be32 *p;
5045 uint32_t why_no_delegation;
5046
5047 p = xdr_inline_decode(xdr, 4);
5048 if (unlikely(!p))
5049 goto out_overflow;
5050 why_no_delegation = be32_to_cpup(p);
5051 switch (why_no_delegation) {
5052 case WND4_CONTENTION:
5053 case WND4_RESOURCE:
5054 xdr_inline_decode(xdr, 4);
5055 /* Ignore for now */
5056 }
5057 return 0;
5058out_overflow:
5059 print_overflow_msg(__func__, xdr);
5060 return -EIO;
5061}
5062
5063static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5064{
5065 __be32 *p;
5066 uint32_t delegation_type;
5067
5068 p = xdr_inline_decode(xdr, 4);
5069 if (unlikely(!p))
5070 goto out_overflow;
5071 delegation_type = be32_to_cpup(p);
5072 res->delegation_type = 0;
5073 switch (delegation_type) {
5074 case NFS4_OPEN_DELEGATE_NONE:
5075 return 0;
5076 case NFS4_OPEN_DELEGATE_READ:
5077 case NFS4_OPEN_DELEGATE_WRITE:
5078 return decode_rw_delegation(xdr, delegation_type, res);
5079 case NFS4_OPEN_DELEGATE_NONE_EXT:
5080 return decode_no_delegation(xdr, res);
5081 }
5082 return -EIO;
5083out_overflow:
5084 print_overflow_msg(__func__, xdr);
5085 return -EIO;
5086}
5087
5088static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5089{
5090 __be32 *p;
5091 uint32_t savewords, bmlen, i;
5092 int status;
5093
5094 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5095 return status;
5096 nfs_increment_open_seqid(status, res->seqid);
5097 if (status)
5098 return status;
5099 status = decode_stateid(xdr, &res->stateid);
5100 if (unlikely(status))
5101 return status;
5102
5103 decode_change_info(xdr, &res->cinfo);
5104
5105 p = xdr_inline_decode(xdr, 8);
5106 if (unlikely(!p))
5107 goto out_overflow;
5108 res->rflags = be32_to_cpup(p++);
5109 bmlen = be32_to_cpup(p);
5110 if (bmlen > 10)
5111 goto xdr_error;
5112
5113 p = xdr_inline_decode(xdr, bmlen << 2);
5114 if (unlikely(!p))
5115 goto out_overflow;
5116 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5117 for (i = 0; i < savewords; ++i)
5118 res->attrset[i] = be32_to_cpup(p++);
5119 for (; i < NFS4_BITMAP_SIZE; i++)
5120 res->attrset[i] = 0;
5121
5122 return decode_delegation(xdr, res);
5123xdr_error:
5124 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5125 return -EIO;
5126out_overflow:
5127 print_overflow_msg(__func__, xdr);
5128 return -EIO;
5129}
5130
5131static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5132{
5133 int status;
5134
5135 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5136 if (status != -EIO)
5137 nfs_increment_open_seqid(status, res->seqid);
5138 if (!status)
5139 status = decode_stateid(xdr, &res->stateid);
5140 return status;
5141}
5142
5143static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5144{
5145 int status;
5146
5147 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5148 if (status != -EIO)
5149 nfs_increment_open_seqid(status, res->seqid);
5150 if (!status)
5151 status = decode_stateid(xdr, &res->stateid);
5152 return status;
5153}
5154
5155static int decode_putfh(struct xdr_stream *xdr)
5156{
5157 return decode_op_hdr(xdr, OP_PUTFH);
5158}
5159
5160static int decode_putrootfh(struct xdr_stream *xdr)
5161{
5162 return decode_op_hdr(xdr, OP_PUTROOTFH);
5163}
5164
5165static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5166 struct nfs_pgio_res *res)
5167{
5168 __be32 *p;
5169 uint32_t count, eof, recvd;
5170 int status;
5171
5172 status = decode_op_hdr(xdr, OP_READ);
5173 if (status)
5174 return status;
5175 p = xdr_inline_decode(xdr, 8);
5176 if (unlikely(!p))
5177 goto out_overflow;
5178 eof = be32_to_cpup(p++);
5179 count = be32_to_cpup(p);
5180 recvd = xdr_read_pages(xdr, count);
5181 if (count > recvd) {
5182 dprintk("NFS: server cheating in read reply: "
5183 "count %u > recvd %u\n", count, recvd);
5184 count = recvd;
5185 eof = 0;
5186 }
5187 res->eof = eof;
5188 res->count = count;
5189 return 0;
5190out_overflow:
5191 print_overflow_msg(__func__, xdr);
5192 return -EIO;
5193}
5194
5195static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5196{
5197 int status;
5198 __be32 verf[2];
5199
5200 status = decode_op_hdr(xdr, OP_READDIR);
5201 if (!status)
5202 status = decode_verifier(xdr, readdir->verifier.data);
5203 if (unlikely(status))
5204 return status;
5205 memcpy(verf, readdir->verifier.data, sizeof(verf));
5206 dprintk("%s: verifier = %08x:%08x\n",
5207 __func__, verf[0], verf[1]);
5208 return xdr_read_pages(xdr, xdr->buf->page_len);
5209}
5210
5211static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5212{
5213 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5214 u32 len, recvd;
5215 __be32 *p;
5216 int status;
5217
5218 status = decode_op_hdr(xdr, OP_READLINK);
5219 if (status)
5220 return status;
5221
5222 /* Convert length of symlink */
5223 p = xdr_inline_decode(xdr, 4);
5224 if (unlikely(!p))
5225 goto out_overflow;
5226 len = be32_to_cpup(p);
5227 if (len >= rcvbuf->page_len || len <= 0) {
5228 dprintk("nfs: server returned giant symlink!\n");
5229 return -ENAMETOOLONG;
5230 }
5231 recvd = xdr_read_pages(xdr, len);
5232 if (recvd < len) {
5233 dprintk("NFS: server cheating in readlink reply: "
5234 "count %u > recvd %u\n", len, recvd);
5235 return -EIO;
5236 }
5237 /*
5238 * The XDR encode routine has set things up so that
5239 * the link text will be copied directly into the
5240 * buffer. We just have to do overflow-checking,
5241 * and and null-terminate the text (the VFS expects
5242 * null-termination).
5243 */
5244 xdr_terminate_string(rcvbuf, len);
5245 return 0;
5246out_overflow:
5247 print_overflow_msg(__func__, xdr);
5248 return -EIO;
5249}
5250
5251static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5252{
5253 int status;
5254
5255 status = decode_op_hdr(xdr, OP_REMOVE);
5256 if (status)
5257 goto out;
5258 status = decode_change_info(xdr, cinfo);
5259out:
5260 return status;
5261}
5262
5263static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5264 struct nfs4_change_info *new_cinfo)
5265{
5266 int status;
5267
5268 status = decode_op_hdr(xdr, OP_RENAME);
5269 if (status)
5270 goto out;
5271 if ((status = decode_change_info(xdr, old_cinfo)))
5272 goto out;
5273 status = decode_change_info(xdr, new_cinfo);
5274out:
5275 return status;
5276}
5277
5278static int decode_renew(struct xdr_stream *xdr)
5279{
5280 return decode_op_hdr(xdr, OP_RENEW);
5281}
5282
5283static int
5284decode_restorefh(struct xdr_stream *xdr)
5285{
5286 return decode_op_hdr(xdr, OP_RESTOREFH);
5287}
5288
5289static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5290 struct nfs_getaclres *res)
5291{
5292 unsigned int savep;
5293 uint32_t attrlen,
5294 bitmap[3] = {0};
5295 int status;
5296 unsigned int pg_offset;
5297
5298 res->acl_len = 0;
5299 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5300 goto out;
5301
5302 xdr_enter_page(xdr, xdr->buf->page_len);
5303
5304 /* Calculate the offset of the page data */
5305 pg_offset = xdr->buf->head[0].iov_len;
5306
5307 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5308 goto out;
5309 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5310 goto out;
5311
5312 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5313 return -EIO;
5314 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5315
5316 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5317 * are stored with the acl data to handle the problem of
5318 * variable length bitmaps.*/
5319 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5320 res->acl_len = attrlen;
5321
5322 /* Check for receive buffer overflow */
5323 if (res->acl_len > (xdr->nwords << 2) ||
5324 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5325 res->acl_flags |= NFS4_ACL_TRUNC;
5326 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5327 attrlen, xdr->nwords << 2);
5328 }
5329 } else
5330 status = -EOPNOTSUPP;
5331
5332out:
5333 return status;
5334}
5335
5336static int
5337decode_savefh(struct xdr_stream *xdr)
5338{
5339 return decode_op_hdr(xdr, OP_SAVEFH);
5340}
5341
5342static int decode_setattr(struct xdr_stream *xdr)
5343{
5344 __be32 *p;
5345 uint32_t bmlen;
5346 int status;
5347
5348 status = decode_op_hdr(xdr, OP_SETATTR);
5349 if (status)
5350 return status;
5351 p = xdr_inline_decode(xdr, 4);
5352 if (unlikely(!p))
5353 goto out_overflow;
5354 bmlen = be32_to_cpup(p);
5355 p = xdr_inline_decode(xdr, bmlen << 2);
5356 if (likely(p))
5357 return 0;
5358out_overflow:
5359 print_overflow_msg(__func__, xdr);
5360 return -EIO;
5361}
5362
5363static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5364{
5365 __be32 *p;
5366 uint32_t opnum;
5367 int32_t nfserr;
5368
5369 p = xdr_inline_decode(xdr, 8);
5370 if (unlikely(!p))
5371 goto out_overflow;
5372 opnum = be32_to_cpup(p++);
5373 if (opnum != OP_SETCLIENTID) {
5374 dprintk("nfs: decode_setclientid: Server returned operation"
5375 " %d\n", opnum);
5376 return -EIO;
5377 }
5378 nfserr = be32_to_cpup(p);
5379 if (nfserr == NFS_OK) {
5380 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5381 if (unlikely(!p))
5382 goto out_overflow;
5383 p = xdr_decode_hyper(p, &res->clientid);
5384 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5385 } else if (nfserr == NFSERR_CLID_INUSE) {
5386 uint32_t len;
5387
5388 /* skip netid string */
5389 p = xdr_inline_decode(xdr, 4);
5390 if (unlikely(!p))
5391 goto out_overflow;
5392 len = be32_to_cpup(p);
5393 p = xdr_inline_decode(xdr, len);
5394 if (unlikely(!p))
5395 goto out_overflow;
5396
5397 /* skip uaddr string */
5398 p = xdr_inline_decode(xdr, 4);
5399 if (unlikely(!p))
5400 goto out_overflow;
5401 len = be32_to_cpup(p);
5402 p = xdr_inline_decode(xdr, len);
5403 if (unlikely(!p))
5404 goto out_overflow;
5405 return -NFSERR_CLID_INUSE;
5406 } else
5407 return nfs4_stat_to_errno(nfserr);
5408
5409 return 0;
5410out_overflow:
5411 print_overflow_msg(__func__, xdr);
5412 return -EIO;
5413}
5414
5415static int decode_setclientid_confirm(struct xdr_stream *xdr)
5416{
5417 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5418}
5419
5420static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5421{
5422 __be32 *p;
5423 int status;
5424
5425 status = decode_op_hdr(xdr, OP_WRITE);
5426 if (status)
5427 return status;
5428
5429 p = xdr_inline_decode(xdr, 8);
5430 if (unlikely(!p))
5431 goto out_overflow;
5432 res->count = be32_to_cpup(p++);
5433 res->verf->committed = be32_to_cpup(p++);
5434 return decode_write_verifier(xdr, &res->verf->verifier);
5435out_overflow:
5436 print_overflow_msg(__func__, xdr);
5437 return -EIO;
5438}
5439
5440static int decode_delegreturn(struct xdr_stream *xdr)
5441{
5442 return decode_op_hdr(xdr, OP_DELEGRETURN);
5443}
5444
5445static int decode_secinfo_gss(struct xdr_stream *xdr,
5446 struct nfs4_secinfo4 *flavor)
5447{
5448 u32 oid_len;
5449 __be32 *p;
5450
5451 p = xdr_inline_decode(xdr, 4);
5452 if (unlikely(!p))
5453 goto out_overflow;
5454 oid_len = be32_to_cpup(p);
5455 if (oid_len > GSS_OID_MAX_LEN)
5456 goto out_err;
5457
5458 p = xdr_inline_decode(xdr, oid_len);
5459 if (unlikely(!p))
5460 goto out_overflow;
5461 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5462 flavor->flavor_info.oid.len = oid_len;
5463
5464 p = xdr_inline_decode(xdr, 8);
5465 if (unlikely(!p))
5466 goto out_overflow;
5467 flavor->flavor_info.qop = be32_to_cpup(p++);
5468 flavor->flavor_info.service = be32_to_cpup(p);
5469
5470 return 0;
5471
5472out_overflow:
5473 print_overflow_msg(__func__, xdr);
5474 return -EIO;
5475out_err:
5476 return -EINVAL;
5477}
5478
5479static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5480{
5481 struct nfs4_secinfo4 *sec_flavor;
5482 unsigned int i, num_flavors;
5483 int status;
5484 __be32 *p;
5485
5486 p = xdr_inline_decode(xdr, 4);
5487 if (unlikely(!p))
5488 goto out_overflow;
5489
5490 res->flavors->num_flavors = 0;
5491 num_flavors = be32_to_cpup(p);
5492
5493 for (i = 0; i < num_flavors; i++) {
5494 sec_flavor = &res->flavors->flavors[i];
5495 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5496 break;
5497
5498 p = xdr_inline_decode(xdr, 4);
5499 if (unlikely(!p))
5500 goto out_overflow;
5501 sec_flavor->flavor = be32_to_cpup(p);
5502
5503 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5504 status = decode_secinfo_gss(xdr, sec_flavor);
5505 if (status)
5506 goto out;
5507 }
5508 res->flavors->num_flavors++;
5509 }
5510
5511 status = 0;
5512out:
5513 return status;
5514out_overflow:
5515 print_overflow_msg(__func__, xdr);
5516 return -EIO;
5517}
5518
5519static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5520{
5521 int status = decode_op_hdr(xdr, OP_SECINFO);
5522 if (status)
5523 return status;
5524 return decode_secinfo_common(xdr, res);
5525}
5526
5527#if defined(CONFIG_NFS_V4_1)
5528static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5529{
5530 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5531 if (status)
5532 return status;
5533 return decode_secinfo_common(xdr, res);
5534}
5535
5536static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5537{
5538 __be32 *p;
5539 uint32_t bitmap_words;
5540 unsigned int i;
5541
5542 p = xdr_inline_decode(xdr, 4);
5543 bitmap_words = be32_to_cpup(p++);
5544 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5545 return -EIO;
5546 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5547 for (i = 0; i < bitmap_words; i++)
5548 op_map->u.words[i] = be32_to_cpup(p++);
5549
5550 return 0;
5551}
5552
5553static int decode_exchange_id(struct xdr_stream *xdr,
5554 struct nfs41_exchange_id_res *res)
5555{
5556 __be32 *p;
5557 uint32_t dummy;
5558 char *dummy_str;
5559 int status;
5560 uint32_t impl_id_count;
5561
5562 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5563 if (status)
5564 return status;
5565
5566 p = xdr_inline_decode(xdr, 8);
5567 if (unlikely(!p))
5568 goto out_overflow;
5569 xdr_decode_hyper(p, &res->clientid);
5570 p = xdr_inline_decode(xdr, 12);
5571 if (unlikely(!p))
5572 goto out_overflow;
5573 res->seqid = be32_to_cpup(p++);
5574 res->flags = be32_to_cpup(p++);
5575
5576 res->state_protect.how = be32_to_cpup(p);
5577 switch (res->state_protect.how) {
5578 case SP4_NONE:
5579 break;
5580 case SP4_MACH_CRED:
5581 status = decode_op_map(xdr, &res->state_protect.enforce);
5582 if (status)
5583 return status;
5584 status = decode_op_map(xdr, &res->state_protect.allow);
5585 if (status)
5586 return status;
5587 break;
5588 default:
5589 WARN_ON_ONCE(1);
5590 return -EIO;
5591 }
5592
5593 /* server_owner4.so_minor_id */
5594 p = xdr_inline_decode(xdr, 8);
5595 if (unlikely(!p))
5596 goto out_overflow;
5597 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5598
5599 /* server_owner4.so_major_id */
5600 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5601 if (unlikely(status))
5602 return status;
5603 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5604 return -EIO;
5605 memcpy(res->server_owner->major_id, dummy_str, dummy);
5606 res->server_owner->major_id_sz = dummy;
5607
5608 /* server_scope4 */
5609 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5610 if (unlikely(status))
5611 return status;
5612 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5613 return -EIO;
5614 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5615 res->server_scope->server_scope_sz = dummy;
5616
5617 /* Implementation Id */
5618 p = xdr_inline_decode(xdr, 4);
5619 if (unlikely(!p))
5620 goto out_overflow;
5621 impl_id_count = be32_to_cpup(p++);
5622
5623 if (impl_id_count) {
5624 /* nii_domain */
5625 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5626 if (unlikely(status))
5627 return status;
5628 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5629 return -EIO;
5630 memcpy(res->impl_id->domain, dummy_str, dummy);
5631
5632 /* nii_name */
5633 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5634 if (unlikely(status))
5635 return status;
5636 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5637 return -EIO;
5638 memcpy(res->impl_id->name, dummy_str, dummy);
5639
5640 /* nii_date */
5641 p = xdr_inline_decode(xdr, 12);
5642 if (unlikely(!p))
5643 goto out_overflow;
5644 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5645 res->impl_id->date.nseconds = be32_to_cpup(p);
5646
5647 /* if there's more than one entry, ignore the rest */
5648 }
5649 return 0;
5650out_overflow:
5651 print_overflow_msg(__func__, xdr);
5652 return -EIO;
5653}
5654
5655static int decode_chan_attrs(struct xdr_stream *xdr,
5656 struct nfs4_channel_attrs *attrs)
5657{
5658 __be32 *p;
5659 u32 nr_attrs, val;
5660
5661 p = xdr_inline_decode(xdr, 28);
5662 if (unlikely(!p))
5663 goto out_overflow;
5664 val = be32_to_cpup(p++); /* headerpadsz */
5665 if (val)
5666 return -EINVAL; /* no support for header padding yet */
5667 attrs->max_rqst_sz = be32_to_cpup(p++);
5668 attrs->max_resp_sz = be32_to_cpup(p++);
5669 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5670 attrs->max_ops = be32_to_cpup(p++);
5671 attrs->max_reqs = be32_to_cpup(p++);
5672 nr_attrs = be32_to_cpup(p);
5673 if (unlikely(nr_attrs > 1)) {
5674 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5675 "count %u\n", __func__, nr_attrs);
5676 return -EINVAL;
5677 }
5678 if (nr_attrs == 1) {
5679 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5680 if (unlikely(!p))
5681 goto out_overflow;
5682 }
5683 return 0;
5684out_overflow:
5685 print_overflow_msg(__func__, xdr);
5686 return -EIO;
5687}
5688
5689static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5690{
5691 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5692}
5693
5694static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5695 struct nfs41_bind_conn_to_session_res *res)
5696{
5697 __be32 *p;
5698 int status;
5699
5700 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5701 if (!status)
5702 status = decode_sessionid(xdr, &res->sessionid);
5703 if (unlikely(status))
5704 return status;
5705
5706 /* dir flags, rdma mode bool */
5707 p = xdr_inline_decode(xdr, 8);
5708 if (unlikely(!p))
5709 goto out_overflow;
5710
5711 res->dir = be32_to_cpup(p++);
5712 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5713 return -EIO;
5714 if (be32_to_cpup(p) == 0)
5715 res->use_conn_in_rdma_mode = false;
5716 else
5717 res->use_conn_in_rdma_mode = true;
5718
5719 return 0;
5720out_overflow:
5721 print_overflow_msg(__func__, xdr);
5722 return -EIO;
5723}
5724
5725static int decode_create_session(struct xdr_stream *xdr,
5726 struct nfs41_create_session_res *res)
5727{
5728 __be32 *p;
5729 int status;
5730
5731 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5732 if (!status)
5733 status = decode_sessionid(xdr, &res->sessionid);
5734 if (unlikely(status))
5735 return status;
5736
5737 /* seqid, flags */
5738 p = xdr_inline_decode(xdr, 8);
5739 if (unlikely(!p))
5740 goto out_overflow;
5741 res->seqid = be32_to_cpup(p++);
5742 res->flags = be32_to_cpup(p);
5743
5744 /* Channel attributes */
5745 status = decode_chan_attrs(xdr, &res->fc_attrs);
5746 if (!status)
5747 status = decode_chan_attrs(xdr, &res->bc_attrs);
5748 return status;
5749out_overflow:
5750 print_overflow_msg(__func__, xdr);
5751 return -EIO;
5752}
5753
5754static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5755{
5756 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5757}
5758
5759static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5760{
5761 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5762}
5763
5764static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5765{
5766 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5767}
5768#endif /* CONFIG_NFS_V4_1 */
5769
5770static int decode_sequence(struct xdr_stream *xdr,
5771 struct nfs4_sequence_res *res,
5772 struct rpc_rqst *rqstp)
5773{
5774#if defined(CONFIG_NFS_V4_1)
5775 struct nfs4_session *session;
5776 struct nfs4_sessionid id;
5777 u32 dummy;
5778 int status;
5779 __be32 *p;
5780
5781 if (res->sr_slot == NULL)
5782 return 0;
5783 if (!res->sr_slot->table->session)
5784 return 0;
5785
5786 status = decode_op_hdr(xdr, OP_SEQUENCE);
5787 if (!status)
5788 status = decode_sessionid(xdr, &id);
5789 if (unlikely(status))
5790 goto out_err;
5791
5792 /*
5793 * If the server returns different values for sessionID, slotID or
5794 * sequence number, the server is looney tunes.
5795 */
5796 status = -EREMOTEIO;
5797 session = res->sr_slot->table->session;
5798
5799 if (memcmp(id.data, session->sess_id.data,
5800 NFS4_MAX_SESSIONID_LEN)) {
5801 dprintk("%s Invalid session id\n", __func__);
5802 goto out_err;
5803 }
5804
5805 p = xdr_inline_decode(xdr, 20);
5806 if (unlikely(!p))
5807 goto out_overflow;
5808
5809 /* seqid */
5810 dummy = be32_to_cpup(p++);
5811 if (dummy != res->sr_slot->seq_nr) {
5812 dprintk("%s Invalid sequence number\n", __func__);
5813 goto out_err;
5814 }
5815 /* slot id */
5816 dummy = be32_to_cpup(p++);
5817 if (dummy != res->sr_slot->slot_nr) {
5818 dprintk("%s Invalid slot id\n", __func__);
5819 goto out_err;
5820 }
5821 /* highest slot id */
5822 res->sr_highest_slotid = be32_to_cpup(p++);
5823 /* target highest slot id */
5824 res->sr_target_highest_slotid = be32_to_cpup(p++);
5825 /* result flags */
5826 res->sr_status_flags = be32_to_cpup(p);
5827 status = 0;
5828out_err:
5829 res->sr_status = status;
5830 return status;
5831out_overflow:
5832 print_overflow_msg(__func__, xdr);
5833 status = -EIO;
5834 goto out_err;
5835#else /* CONFIG_NFS_V4_1 */
5836 return 0;
5837#endif /* CONFIG_NFS_V4_1 */
5838}
5839
5840#if defined(CONFIG_NFS_V4_1)
5841static int decode_getdeviceinfo(struct xdr_stream *xdr,
5842 struct nfs4_getdeviceinfo_res *res)
5843{
5844 struct pnfs_device *pdev = res->pdev;
5845 __be32 *p;
5846 uint32_t len, type;
5847 int status;
5848
5849 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5850 if (status) {
5851 if (status == -ETOOSMALL) {
5852 p = xdr_inline_decode(xdr, 4);
5853 if (unlikely(!p))
5854 goto out_overflow;
5855 pdev->mincount = be32_to_cpup(p);
5856 dprintk("%s: Min count too small. mincnt = %u\n",
5857 __func__, pdev->mincount);
5858 }
5859 return status;
5860 }
5861
5862 p = xdr_inline_decode(xdr, 8);
5863 if (unlikely(!p))
5864 goto out_overflow;
5865 type = be32_to_cpup(p++);
5866 if (type != pdev->layout_type) {
5867 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5868 __func__, pdev->layout_type, type);
5869 return -EINVAL;
5870 }
5871 /*
5872 * Get the length of the opaque device_addr4. xdr_read_pages places
5873 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5874 * and places the remaining xdr data in xdr_buf->tail
5875 */
5876 pdev->mincount = be32_to_cpup(p);
5877 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5878 goto out_overflow;
5879
5880 /* Parse notification bitmap, verifying that it is zero. */
5881 p = xdr_inline_decode(xdr, 4);
5882 if (unlikely(!p))
5883 goto out_overflow;
5884 len = be32_to_cpup(p);
5885 if (len) {
5886 uint32_t i;
5887
5888 p = xdr_inline_decode(xdr, 4 * len);
5889 if (unlikely(!p))
5890 goto out_overflow;
5891
5892 res->notification = be32_to_cpup(p++);
5893 for (i = 1; i < len; i++) {
5894 if (be32_to_cpup(p++)) {
5895 dprintk("%s: unsupported notification\n",
5896 __func__);
5897 return -EIO;
5898 }
5899 }
5900 }
5901 return 0;
5902out_overflow:
5903 print_overflow_msg(__func__, xdr);
5904 return -EIO;
5905}
5906
5907static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5908 struct nfs4_layoutget_res *res)
5909{
5910 __be32 *p;
5911 int status;
5912 u32 layout_count;
5913 u32 recvd;
5914
5915 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5916 if (status)
5917 return status;
5918 p = xdr_inline_decode(xdr, 4);
5919 if (unlikely(!p))
5920 goto out_overflow;
5921 res->return_on_close = be32_to_cpup(p);
5922 decode_stateid(xdr, &res->stateid);
5923 p = xdr_inline_decode(xdr, 4);
5924 if (unlikely(!p))
5925 goto out_overflow;
5926 layout_count = be32_to_cpup(p);
5927 if (!layout_count) {
5928 dprintk("%s: server responded with empty layout array\n",
5929 __func__);
5930 return -EINVAL;
5931 }
5932
5933 p = xdr_inline_decode(xdr, 28);
5934 if (unlikely(!p))
5935 goto out_overflow;
5936 p = xdr_decode_hyper(p, &res->range.offset);
5937 p = xdr_decode_hyper(p, &res->range.length);
5938 res->range.iomode = be32_to_cpup(p++);
5939 res->type = be32_to_cpup(p++);
5940 res->layoutp->len = be32_to_cpup(p);
5941
5942 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5943 __func__,
5944 (unsigned long)res->range.offset,
5945 (unsigned long)res->range.length,
5946 res->range.iomode,
5947 res->type,
5948 res->layoutp->len);
5949
5950 recvd = xdr_read_pages(xdr, res->layoutp->len);
5951 if (res->layoutp->len > recvd) {
5952 dprintk("NFS: server cheating in layoutget reply: "
5953 "layout len %u > recvd %u\n",
5954 res->layoutp->len, recvd);
5955 return -EINVAL;
5956 }
5957
5958 if (layout_count > 1) {
5959 /* We only handle a length one array at the moment. Any
5960 * further entries are just ignored. Note that this means
5961 * the client may see a response that is less than the
5962 * minimum it requested.
5963 */
5964 dprintk("%s: server responded with %d layouts, dropping tail\n",
5965 __func__, layout_count);
5966 }
5967
5968 return 0;
5969out_overflow:
5970 print_overflow_msg(__func__, xdr);
5971 return -EIO;
5972}
5973
5974static int decode_layoutreturn(struct xdr_stream *xdr,
5975 struct nfs4_layoutreturn_res *res)
5976{
5977 __be32 *p;
5978 int status;
5979
5980 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5981 if (status)
5982 return status;
5983 p = xdr_inline_decode(xdr, 4);
5984 if (unlikely(!p))
5985 goto out_overflow;
5986 res->lrs_present = be32_to_cpup(p);
5987 if (res->lrs_present)
5988 status = decode_stateid(xdr, &res->stateid);
5989 return status;
5990out_overflow:
5991 print_overflow_msg(__func__, xdr);
5992 return -EIO;
5993}
5994
5995static int decode_layoutcommit(struct xdr_stream *xdr,
5996 struct rpc_rqst *req,
5997 struct nfs4_layoutcommit_res *res)
5998{
5999 __be32 *p;
6000 __u32 sizechanged;
6001 int status;
6002
6003 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6004 res->status = status;
6005 if (status)
6006 return status;
6007
6008 p = xdr_inline_decode(xdr, 4);
6009 if (unlikely(!p))
6010 goto out_overflow;
6011 sizechanged = be32_to_cpup(p);
6012
6013 if (sizechanged) {
6014 /* throw away new size */
6015 p = xdr_inline_decode(xdr, 8);
6016 if (unlikely(!p))
6017 goto out_overflow;
6018 }
6019 return 0;
6020out_overflow:
6021 print_overflow_msg(__func__, xdr);
6022 return -EIO;
6023}
6024
6025static int decode_test_stateid(struct xdr_stream *xdr,
6026 struct nfs41_test_stateid_res *res)
6027{
6028 __be32 *p;
6029 int status;
6030 int num_res;
6031
6032 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6033 if (status)
6034 return status;
6035
6036 p = xdr_inline_decode(xdr, 4);
6037 if (unlikely(!p))
6038 goto out_overflow;
6039 num_res = be32_to_cpup(p++);
6040 if (num_res != 1)
6041 goto out;
6042
6043 p = xdr_inline_decode(xdr, 4);
6044 if (unlikely(!p))
6045 goto out_overflow;
6046 res->status = be32_to_cpup(p++);
6047
6048 return status;
6049out_overflow:
6050 print_overflow_msg(__func__, xdr);
6051out:
6052 return -EIO;
6053}
6054
6055static int decode_free_stateid(struct xdr_stream *xdr,
6056 struct nfs41_free_stateid_res *res)
6057{
6058 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6059 return res->status;
6060}
6061#endif /* CONFIG_NFS_V4_1 */
6062
6063/*
6064 * END OF "GENERIC" DECODE ROUTINES.
6065 */
6066
6067/*
6068 * Decode OPEN_DOWNGRADE response
6069 */
6070static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6071 struct xdr_stream *xdr,
6072 struct nfs_closeres *res)
6073{
6074 struct compound_hdr hdr;
6075 int status;
6076
6077 status = decode_compound_hdr(xdr, &hdr);
6078 if (status)
6079 goto out;
6080 status = decode_sequence(xdr, &res->seq_res, rqstp);
6081 if (status)
6082 goto out;
6083 status = decode_putfh(xdr);
6084 if (status)
6085 goto out;
6086 status = decode_open_downgrade(xdr, res);
6087 if (status != 0)
6088 goto out;
6089 decode_getfattr(xdr, res->fattr, res->server);
6090out:
6091 return status;
6092}
6093
6094/*
6095 * Decode ACCESS response
6096 */
6097static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6098 struct nfs4_accessres *res)
6099{
6100 struct compound_hdr hdr;
6101 int status;
6102
6103 status = decode_compound_hdr(xdr, &hdr);
6104 if (status)
6105 goto out;
6106 status = decode_sequence(xdr, &res->seq_res, rqstp);
6107 if (status)
6108 goto out;
6109 status = decode_putfh(xdr);
6110 if (status != 0)
6111 goto out;
6112 status = decode_access(xdr, &res->supported, &res->access);
6113 if (status != 0)
6114 goto out;
6115 decode_getfattr(xdr, res->fattr, res->server);
6116out:
6117 return status;
6118}
6119
6120/*
6121 * Decode LOOKUP response
6122 */
6123static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6124 struct nfs4_lookup_res *res)
6125{
6126 struct compound_hdr hdr;
6127 int status;
6128
6129 status = decode_compound_hdr(xdr, &hdr);
6130 if (status)
6131 goto out;
6132 status = decode_sequence(xdr, &res->seq_res, rqstp);
6133 if (status)
6134 goto out;
6135 status = decode_putfh(xdr);
6136 if (status)
6137 goto out;
6138 status = decode_lookup(xdr);
6139 if (status)
6140 goto out;
6141 status = decode_getfh(xdr, res->fh);
6142 if (status)
6143 goto out;
6144 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6145out:
6146 return status;
6147}
6148
6149/*
6150 * Decode LOOKUP_ROOT response
6151 */
6152static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6153 struct xdr_stream *xdr,
6154 struct nfs4_lookup_res *res)
6155{
6156 struct compound_hdr hdr;
6157 int status;
6158
6159 status = decode_compound_hdr(xdr, &hdr);
6160 if (status)
6161 goto out;
6162 status = decode_sequence(xdr, &res->seq_res, rqstp);
6163 if (status)
6164 goto out;
6165 status = decode_putrootfh(xdr);
6166 if (status)
6167 goto out;
6168 status = decode_getfh(xdr, res->fh);
6169 if (status == 0)
6170 status = decode_getfattr_label(xdr, res->fattr,
6171 res->label, res->server);
6172out:
6173 return status;
6174}
6175
6176/*
6177 * Decode REMOVE response
6178 */
6179static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6180 struct nfs_removeres *res)
6181{
6182 struct compound_hdr hdr;
6183 int status;
6184
6185 status = decode_compound_hdr(xdr, &hdr);
6186 if (status)
6187 goto out;
6188 status = decode_sequence(xdr, &res->seq_res, rqstp);
6189 if (status)
6190 goto out;
6191 status = decode_putfh(xdr);
6192 if (status)
6193 goto out;
6194 status = decode_remove(xdr, &res->cinfo);
6195out:
6196 return status;
6197}
6198
6199/*
6200 * Decode RENAME response
6201 */
6202static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6203 struct nfs_renameres *res)
6204{
6205 struct compound_hdr hdr;
6206 int status;
6207
6208 status = decode_compound_hdr(xdr, &hdr);
6209 if (status)
6210 goto out;
6211 status = decode_sequence(xdr, &res->seq_res, rqstp);
6212 if (status)
6213 goto out;
6214 status = decode_putfh(xdr);
6215 if (status)
6216 goto out;
6217 status = decode_savefh(xdr);
6218 if (status)
6219 goto out;
6220 status = decode_putfh(xdr);
6221 if (status)
6222 goto out;
6223 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6224out:
6225 return status;
6226}
6227
6228/*
6229 * Decode LINK response
6230 */
6231static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6232 struct nfs4_link_res *res)
6233{
6234 struct compound_hdr hdr;
6235 int status;
6236
6237 status = decode_compound_hdr(xdr, &hdr);
6238 if (status)
6239 goto out;
6240 status = decode_sequence(xdr, &res->seq_res, rqstp);
6241 if (status)
6242 goto out;
6243 status = decode_putfh(xdr);
6244 if (status)
6245 goto out;
6246 status = decode_savefh(xdr);
6247 if (status)
6248 goto out;
6249 status = decode_putfh(xdr);
6250 if (status)
6251 goto out;
6252 status = decode_link(xdr, &res->cinfo);
6253 if (status)
6254 goto out;
6255 /*
6256 * Note order: OP_LINK leaves the directory as the current
6257 * filehandle.
6258 */
6259 status = decode_restorefh(xdr);
6260 if (status)
6261 goto out;
6262 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6263out:
6264 return status;
6265}
6266
6267/*
6268 * Decode CREATE response
6269 */
6270static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6271 struct nfs4_create_res *res)
6272{
6273 struct compound_hdr hdr;
6274 int status;
6275
6276 status = decode_compound_hdr(xdr, &hdr);
6277 if (status)
6278 goto out;
6279 status = decode_sequence(xdr, &res->seq_res, rqstp);
6280 if (status)
6281 goto out;
6282 status = decode_putfh(xdr);
6283 if (status)
6284 goto out;
6285 status = decode_create(xdr, &res->dir_cinfo);
6286 if (status)
6287 goto out;
6288 status = decode_getfh(xdr, res->fh);
6289 if (status)
6290 goto out;
6291 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6292out:
6293 return status;
6294}
6295
6296/*
6297 * Decode SYMLINK response
6298 */
6299static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6300 struct nfs4_create_res *res)
6301{
6302 return nfs4_xdr_dec_create(rqstp, xdr, res);
6303}
6304
6305/*
6306 * Decode GETATTR response
6307 */
6308static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6309 struct nfs4_getattr_res *res)
6310{
6311 struct compound_hdr hdr;
6312 int status;
6313
6314 status = decode_compound_hdr(xdr, &hdr);
6315 if (status)
6316 goto out;
6317 status = decode_sequence(xdr, &res->seq_res, rqstp);
6318 if (status)
6319 goto out;
6320 status = decode_putfh(xdr);
6321 if (status)
6322 goto out;
6323 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6324out:
6325 return status;
6326}
6327
6328/*
6329 * Encode an SETACL request
6330 */
6331static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6332 struct nfs_setaclargs *args)
6333{
6334 struct compound_hdr hdr = {
6335 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6336 };
6337
6338 encode_compound_hdr(xdr, req, &hdr);
6339 encode_sequence(xdr, &args->seq_args, &hdr);
6340 encode_putfh(xdr, args->fh, &hdr);
6341 encode_setacl(xdr, args, &hdr);
6342 encode_nops(&hdr);
6343}
6344
6345/*
6346 * Decode SETACL response
6347 */
6348static int
6349nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6350 struct nfs_setaclres *res)
6351{
6352 struct compound_hdr hdr;
6353 int status;
6354
6355 status = decode_compound_hdr(xdr, &hdr);
6356 if (status)
6357 goto out;
6358 status = decode_sequence(xdr, &res->seq_res, rqstp);
6359 if (status)
6360 goto out;
6361 status = decode_putfh(xdr);
6362 if (status)
6363 goto out;
6364 status = decode_setattr(xdr);
6365out:
6366 return status;
6367}
6368
6369/*
6370 * Decode GETACL response
6371 */
6372static int
6373nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6374 struct nfs_getaclres *res)
6375{
6376 struct compound_hdr hdr;
6377 int status;
6378
6379 if (res->acl_scratch != NULL) {
6380 void *p = page_address(res->acl_scratch);
6381 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
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_getacl(xdr, rqstp, res);
6393
6394out:
6395 return status;
6396}
6397
6398/*
6399 * Decode CLOSE response
6400 */
6401static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6402 struct nfs_closeres *res)
6403{
6404 struct compound_hdr hdr;
6405 int status;
6406
6407 status = decode_compound_hdr(xdr, &hdr);
6408 if (status)
6409 goto out;
6410 status = decode_sequence(xdr, &res->seq_res, rqstp);
6411 if (status)
6412 goto out;
6413 status = decode_putfh(xdr);
6414 if (status)
6415 goto out;
6416 status = decode_close(xdr, res);
6417 if (status != 0)
6418 goto out;
6419 /*
6420 * Note: Server may do delete on close for this file
6421 * in which case the getattr call will fail with
6422 * an ESTALE error. Shouldn't be a problem,
6423 * though, since fattr->valid will remain unset.
6424 */
6425 decode_getfattr(xdr, res->fattr, res->server);
6426out:
6427 return status;
6428}
6429
6430/*
6431 * Decode OPEN response
6432 */
6433static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6434 struct nfs_openres *res)
6435{
6436 struct compound_hdr hdr;
6437 int status;
6438
6439 status = decode_compound_hdr(xdr, &hdr);
6440 if (status)
6441 goto out;
6442 status = decode_sequence(xdr, &res->seq_res, rqstp);
6443 if (status)
6444 goto out;
6445 status = decode_putfh(xdr);
6446 if (status)
6447 goto out;
6448 status = decode_open(xdr, res);
6449 if (status)
6450 goto out;
6451 status = decode_getfh(xdr, &res->fh);
6452 if (status)
6453 goto out;
6454 if (res->access_request)
6455 decode_access(xdr, &res->access_supported, &res->access_result);
6456 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6457out:
6458 return status;
6459}
6460
6461/*
6462 * Decode OPEN_CONFIRM response
6463 */
6464static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6465 struct xdr_stream *xdr,
6466 struct nfs_open_confirmres *res)
6467{
6468 struct compound_hdr hdr;
6469 int status;
6470
6471 status = decode_compound_hdr(xdr, &hdr);
6472 if (status)
6473 goto out;
6474 status = decode_putfh(xdr);
6475 if (status)
6476 goto out;
6477 status = decode_open_confirm(xdr, res);
6478out:
6479 return status;
6480}
6481
6482/*
6483 * Decode OPEN response
6484 */
6485static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6486 struct xdr_stream *xdr,
6487 struct nfs_openres *res)
6488{
6489 struct compound_hdr hdr;
6490 int status;
6491
6492 status = decode_compound_hdr(xdr, &hdr);
6493 if (status)
6494 goto out;
6495 status = decode_sequence(xdr, &res->seq_res, rqstp);
6496 if (status)
6497 goto out;
6498 status = decode_putfh(xdr);
6499 if (status)
6500 goto out;
6501 status = decode_open(xdr, res);
6502 if (status)
6503 goto out;
6504 if (res->access_request)
6505 decode_access(xdr, &res->access_supported, &res->access_result);
6506 decode_getfattr(xdr, res->f_attr, res->server);
6507out:
6508 return status;
6509}
6510
6511/*
6512 * Decode SETATTR response
6513 */
6514static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6515 struct xdr_stream *xdr,
6516 struct nfs_setattrres *res)
6517{
6518 struct compound_hdr hdr;
6519 int status;
6520
6521 status = decode_compound_hdr(xdr, &hdr);
6522 if (status)
6523 goto out;
6524 status = decode_sequence(xdr, &res->seq_res, rqstp);
6525 if (status)
6526 goto out;
6527 status = decode_putfh(xdr);
6528 if (status)
6529 goto out;
6530 status = decode_setattr(xdr);
6531 if (status)
6532 goto out;
6533 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6534out:
6535 return status;
6536}
6537
6538/*
6539 * Decode LOCK response
6540 */
6541static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6542 struct nfs_lock_res *res)
6543{
6544 struct compound_hdr hdr;
6545 int status;
6546
6547 status = decode_compound_hdr(xdr, &hdr);
6548 if (status)
6549 goto out;
6550 status = decode_sequence(xdr, &res->seq_res, rqstp);
6551 if (status)
6552 goto out;
6553 status = decode_putfh(xdr);
6554 if (status)
6555 goto out;
6556 status = decode_lock(xdr, res);
6557out:
6558 return status;
6559}
6560
6561/*
6562 * Decode LOCKT response
6563 */
6564static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6565 struct nfs_lockt_res *res)
6566{
6567 struct compound_hdr hdr;
6568 int status;
6569
6570 status = decode_compound_hdr(xdr, &hdr);
6571 if (status)
6572 goto out;
6573 status = decode_sequence(xdr, &res->seq_res, rqstp);
6574 if (status)
6575 goto out;
6576 status = decode_putfh(xdr);
6577 if (status)
6578 goto out;
6579 status = decode_lockt(xdr, res);
6580out:
6581 return status;
6582}
6583
6584/*
6585 * Decode LOCKU response
6586 */
6587static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6588 struct nfs_locku_res *res)
6589{
6590 struct compound_hdr hdr;
6591 int status;
6592
6593 status = decode_compound_hdr(xdr, &hdr);
6594 if (status)
6595 goto out;
6596 status = decode_sequence(xdr, &res->seq_res, rqstp);
6597 if (status)
6598 goto out;
6599 status = decode_putfh(xdr);
6600 if (status)
6601 goto out;
6602 status = decode_locku(xdr, res);
6603out:
6604 return status;
6605}
6606
6607static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6608 struct xdr_stream *xdr, void *dummy)
6609{
6610 struct compound_hdr hdr;
6611 int status;
6612
6613 status = decode_compound_hdr(xdr, &hdr);
6614 if (!status)
6615 status = decode_release_lockowner(xdr);
6616 return status;
6617}
6618
6619/*
6620 * Decode READLINK response
6621 */
6622static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6623 struct xdr_stream *xdr,
6624 struct nfs4_readlink_res *res)
6625{
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_readlink(xdr, rqstp);
6639out:
6640 return status;
6641}
6642
6643/*
6644 * Decode READDIR response
6645 */
6646static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6647 struct nfs4_readdir_res *res)
6648{
6649 struct compound_hdr hdr;
6650 int status;
6651
6652 status = decode_compound_hdr(xdr, &hdr);
6653 if (status)
6654 goto out;
6655 status = decode_sequence(xdr, &res->seq_res, rqstp);
6656 if (status)
6657 goto out;
6658 status = decode_putfh(xdr);
6659 if (status)
6660 goto out;
6661 status = decode_readdir(xdr, rqstp, res);
6662out:
6663 return status;
6664}
6665
6666/*
6667 * Decode Read response
6668 */
6669static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6670 struct nfs_pgio_res *res)
6671{
6672 struct compound_hdr hdr;
6673 int status;
6674
6675 status = decode_compound_hdr(xdr, &hdr);
6676 res->op_status = hdr.status;
6677 if (status)
6678 goto out;
6679 status = decode_sequence(xdr, &res->seq_res, rqstp);
6680 if (status)
6681 goto out;
6682 status = decode_putfh(xdr);
6683 if (status)
6684 goto out;
6685 status = decode_read(xdr, rqstp, res);
6686 if (!status)
6687 status = res->count;
6688out:
6689 return status;
6690}
6691
6692/*
6693 * Decode WRITE response
6694 */
6695static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6696 struct nfs_pgio_res *res)
6697{
6698 struct compound_hdr hdr;
6699 int status;
6700
6701 status = decode_compound_hdr(xdr, &hdr);
6702 res->op_status = hdr.status;
6703 if (status)
6704 goto out;
6705 status = decode_sequence(xdr, &res->seq_res, rqstp);
6706 if (status)
6707 goto out;
6708 status = decode_putfh(xdr);
6709 if (status)
6710 goto out;
6711 status = decode_write(xdr, res);
6712 if (status)
6713 goto out;
6714 if (res->fattr)
6715 decode_getfattr(xdr, res->fattr, res->server);
6716 if (!status)
6717 status = res->count;
6718out:
6719 return status;
6720}
6721
6722/*
6723 * Decode COMMIT response
6724 */
6725static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6726 struct nfs_commitres *res)
6727{
6728 struct compound_hdr hdr;
6729 int status;
6730
6731 status = decode_compound_hdr(xdr, &hdr);
6732 res->op_status = hdr.status;
6733 if (status)
6734 goto out;
6735 status = decode_sequence(xdr, &res->seq_res, rqstp);
6736 if (status)
6737 goto out;
6738 status = decode_putfh(xdr);
6739 if (status)
6740 goto out;
6741 status = decode_commit(xdr, res);
6742out:
6743 return status;
6744}
6745
6746/*
6747 * Decode FSINFO response
6748 */
6749static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6750 struct nfs4_fsinfo_res *res)
6751{
6752 struct compound_hdr hdr;
6753 int status;
6754
6755 status = decode_compound_hdr(xdr, &hdr);
6756 if (!status)
6757 status = decode_sequence(xdr, &res->seq_res, req);
6758 if (!status)
6759 status = decode_putfh(xdr);
6760 if (!status)
6761 status = decode_fsinfo(xdr, res->fsinfo);
6762 return status;
6763}
6764
6765/*
6766 * Decode PATHCONF response
6767 */
6768static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6769 struct nfs4_pathconf_res *res)
6770{
6771 struct compound_hdr hdr;
6772 int status;
6773
6774 status = decode_compound_hdr(xdr, &hdr);
6775 if (!status)
6776 status = decode_sequence(xdr, &res->seq_res, req);
6777 if (!status)
6778 status = decode_putfh(xdr);
6779 if (!status)
6780 status = decode_pathconf(xdr, res->pathconf);
6781 return status;
6782}
6783
6784/*
6785 * Decode STATFS response
6786 */
6787static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6788 struct nfs4_statfs_res *res)
6789{
6790 struct compound_hdr hdr;
6791 int status;
6792
6793 status = decode_compound_hdr(xdr, &hdr);
6794 if (!status)
6795 status = decode_sequence(xdr, &res->seq_res, req);
6796 if (!status)
6797 status = decode_putfh(xdr);
6798 if (!status)
6799 status = decode_statfs(xdr, res->fsstat);
6800 return status;
6801}
6802
6803/*
6804 * Decode GETATTR_BITMAP response
6805 */
6806static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6807 struct xdr_stream *xdr,
6808 struct nfs4_server_caps_res *res)
6809{
6810 struct compound_hdr hdr;
6811 int status;
6812
6813 status = decode_compound_hdr(xdr, &hdr);
6814 if (status)
6815 goto out;
6816 status = decode_sequence(xdr, &res->seq_res, req);
6817 if (status)
6818 goto out;
6819 status = decode_putfh(xdr);
6820 if (status)
6821 goto out;
6822 status = decode_server_caps(xdr, res);
6823out:
6824 return status;
6825}
6826
6827/*
6828 * Decode RENEW response
6829 */
6830static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6831 void *__unused)
6832{
6833 struct compound_hdr hdr;
6834 int status;
6835
6836 status = decode_compound_hdr(xdr, &hdr);
6837 if (!status)
6838 status = decode_renew(xdr);
6839 return status;
6840}
6841
6842/*
6843 * Decode SETCLIENTID response
6844 */
6845static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6846 struct xdr_stream *xdr,
6847 struct nfs4_setclientid_res *res)
6848{
6849 struct compound_hdr hdr;
6850 int status;
6851
6852 status = decode_compound_hdr(xdr, &hdr);
6853 if (!status)
6854 status = decode_setclientid(xdr, res);
6855 return status;
6856}
6857
6858/*
6859 * Decode SETCLIENTID_CONFIRM response
6860 */
6861static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6862 struct xdr_stream *xdr)
6863{
6864 struct compound_hdr hdr;
6865 int status;
6866
6867 status = decode_compound_hdr(xdr, &hdr);
6868 if (!status)
6869 status = decode_setclientid_confirm(xdr);
6870 return status;
6871}
6872
6873/*
6874 * Decode DELEGRETURN response
6875 */
6876static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6877 struct xdr_stream *xdr,
6878 struct nfs4_delegreturnres *res)
6879{
6880 struct compound_hdr hdr;
6881 int status;
6882
6883 status = decode_compound_hdr(xdr, &hdr);
6884 if (status)
6885 goto out;
6886 status = decode_sequence(xdr, &res->seq_res, rqstp);
6887 if (status)
6888 goto out;
6889 status = decode_putfh(xdr);
6890 if (status != 0)
6891 goto out;
6892 status = decode_getfattr(xdr, res->fattr, res->server);
6893 if (status != 0)
6894 goto out;
6895 status = decode_delegreturn(xdr);
6896out:
6897 return status;
6898}
6899
6900/*
6901 * Decode FS_LOCATIONS response
6902 */
6903static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6904 struct xdr_stream *xdr,
6905 struct nfs4_fs_locations_res *res)
6906{
6907 struct compound_hdr hdr;
6908 int status;
6909
6910 status = decode_compound_hdr(xdr, &hdr);
6911 if (status)
6912 goto out;
6913 status = decode_sequence(xdr, &res->seq_res, req);
6914 if (status)
6915 goto out;
6916 status = decode_putfh(xdr);
6917 if (status)
6918 goto out;
6919 if (res->migration) {
6920 xdr_enter_page(xdr, PAGE_SIZE);
6921 status = decode_getfattr_generic(xdr,
6922 &res->fs_locations->fattr,
6923 NULL, res->fs_locations,
6924 NULL, res->fs_locations->server);
6925 if (status)
6926 goto out;
6927 if (res->renew)
6928 status = decode_renew(xdr);
6929 } else {
6930 status = decode_lookup(xdr);
6931 if (status)
6932 goto out;
6933 xdr_enter_page(xdr, PAGE_SIZE);
6934 status = decode_getfattr_generic(xdr,
6935 &res->fs_locations->fattr,
6936 NULL, res->fs_locations,
6937 NULL, res->fs_locations->server);
6938 }
6939out:
6940 return status;
6941}
6942
6943/*
6944 * Decode SECINFO response
6945 */
6946static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6947 struct xdr_stream *xdr,
6948 struct nfs4_secinfo_res *res)
6949{
6950 struct compound_hdr hdr;
6951 int status;
6952
6953 status = decode_compound_hdr(xdr, &hdr);
6954 if (status)
6955 goto out;
6956 status = decode_sequence(xdr, &res->seq_res, rqstp);
6957 if (status)
6958 goto out;
6959 status = decode_putfh(xdr);
6960 if (status)
6961 goto out;
6962 status = decode_secinfo(xdr, res);
6963out:
6964 return status;
6965}
6966
6967/*
6968 * Decode FSID_PRESENT response
6969 */
6970static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
6971 struct xdr_stream *xdr,
6972 struct nfs4_fsid_present_res *res)
6973{
6974 struct compound_hdr hdr;
6975 int status;
6976
6977 status = decode_compound_hdr(xdr, &hdr);
6978 if (status)
6979 goto out;
6980 status = decode_sequence(xdr, &res->seq_res, rqstp);
6981 if (status)
6982 goto out;
6983 status = decode_putfh(xdr);
6984 if (status)
6985 goto out;
6986 status = decode_getfh(xdr, res->fh);
6987 if (status)
6988 goto out;
6989 if (res->renew)
6990 status = decode_renew(xdr);
6991out:
6992 return status;
6993}
6994
6995#if defined(CONFIG_NFS_V4_1)
6996/*
6997 * Decode BIND_CONN_TO_SESSION response
6998 */
6999static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7000 struct xdr_stream *xdr,
7001 void *res)
7002{
7003 struct compound_hdr hdr;
7004 int status;
7005
7006 status = decode_compound_hdr(xdr, &hdr);
7007 if (!status)
7008 status = decode_bind_conn_to_session(xdr, res);
7009 return status;
7010}
7011
7012/*
7013 * Decode EXCHANGE_ID response
7014 */
7015static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7016 struct xdr_stream *xdr,
7017 void *res)
7018{
7019 struct compound_hdr hdr;
7020 int status;
7021
7022 status = decode_compound_hdr(xdr, &hdr);
7023 if (!status)
7024 status = decode_exchange_id(xdr, res);
7025 return status;
7026}
7027
7028/*
7029 * Decode CREATE_SESSION response
7030 */
7031static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7032 struct xdr_stream *xdr,
7033 struct nfs41_create_session_res *res)
7034{
7035 struct compound_hdr hdr;
7036 int status;
7037
7038 status = decode_compound_hdr(xdr, &hdr);
7039 if (!status)
7040 status = decode_create_session(xdr, res);
7041 return status;
7042}
7043
7044/*
7045 * Decode DESTROY_SESSION response
7046 */
7047static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7048 struct xdr_stream *xdr,
7049 void *res)
7050{
7051 struct compound_hdr hdr;
7052 int status;
7053
7054 status = decode_compound_hdr(xdr, &hdr);
7055 if (!status)
7056 status = decode_destroy_session(xdr, res);
7057 return status;
7058}
7059
7060/*
7061 * Decode DESTROY_CLIENTID response
7062 */
7063static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7064 struct xdr_stream *xdr,
7065 void *res)
7066{
7067 struct compound_hdr hdr;
7068 int status;
7069
7070 status = decode_compound_hdr(xdr, &hdr);
7071 if (!status)
7072 status = decode_destroy_clientid(xdr, res);
7073 return status;
7074}
7075
7076/*
7077 * Decode SEQUENCE response
7078 */
7079static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7080 struct xdr_stream *xdr,
7081 struct nfs4_sequence_res *res)
7082{
7083 struct compound_hdr hdr;
7084 int status;
7085
7086 status = decode_compound_hdr(xdr, &hdr);
7087 if (!status)
7088 status = decode_sequence(xdr, res, rqstp);
7089 return status;
7090}
7091
7092/*
7093 * Decode GET_LEASE_TIME response
7094 */
7095static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7096 struct xdr_stream *xdr,
7097 struct nfs4_get_lease_time_res *res)
7098{
7099 struct compound_hdr hdr;
7100 int status;
7101
7102 status = decode_compound_hdr(xdr, &hdr);
7103 if (!status)
7104 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7105 if (!status)
7106 status = decode_putrootfh(xdr);
7107 if (!status)
7108 status = decode_fsinfo(xdr, res->lr_fsinfo);
7109 return status;
7110}
7111
7112/*
7113 * Decode RECLAIM_COMPLETE response
7114 */
7115static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7116 struct xdr_stream *xdr,
7117 struct nfs41_reclaim_complete_res *res)
7118{
7119 struct compound_hdr hdr;
7120 int status;
7121
7122 status = decode_compound_hdr(xdr, &hdr);
7123 if (!status)
7124 status = decode_sequence(xdr, &res->seq_res, rqstp);
7125 if (!status)
7126 status = decode_reclaim_complete(xdr, NULL);
7127 return status;
7128}
7129
7130/*
7131 * Decode GETDEVINFO response
7132 */
7133static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7134 struct xdr_stream *xdr,
7135 struct nfs4_getdeviceinfo_res *res)
7136{
7137 struct compound_hdr hdr;
7138 int status;
7139
7140 status = decode_compound_hdr(xdr, &hdr);
7141 if (status != 0)
7142 goto out;
7143 status = decode_sequence(xdr, &res->seq_res, rqstp);
7144 if (status != 0)
7145 goto out;
7146 status = decode_getdeviceinfo(xdr, res);
7147out:
7148 return status;
7149}
7150
7151/*
7152 * Decode LAYOUTGET response
7153 */
7154static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7155 struct xdr_stream *xdr,
7156 struct nfs4_layoutget_res *res)
7157{
7158 struct compound_hdr hdr;
7159 int status;
7160
7161 status = decode_compound_hdr(xdr, &hdr);
7162 if (status)
7163 goto out;
7164 status = decode_sequence(xdr, &res->seq_res, rqstp);
7165 if (status)
7166 goto out;
7167 status = decode_putfh(xdr);
7168 if (status)
7169 goto out;
7170 status = decode_layoutget(xdr, rqstp, res);
7171out:
7172 return status;
7173}
7174
7175/*
7176 * Decode LAYOUTRETURN response
7177 */
7178static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7179 struct xdr_stream *xdr,
7180 struct nfs4_layoutreturn_res *res)
7181{
7182 struct compound_hdr hdr;
7183 int status;
7184
7185 status = decode_compound_hdr(xdr, &hdr);
7186 if (status)
7187 goto out;
7188 status = decode_sequence(xdr, &res->seq_res, rqstp);
7189 if (status)
7190 goto out;
7191 status = decode_putfh(xdr);
7192 if (status)
7193 goto out;
7194 status = decode_layoutreturn(xdr, res);
7195out:
7196 return status;
7197}
7198
7199/*
7200 * Decode LAYOUTCOMMIT response
7201 */
7202static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7203 struct xdr_stream *xdr,
7204 struct nfs4_layoutcommit_res *res)
7205{
7206 struct compound_hdr hdr;
7207 int status;
7208
7209 status = decode_compound_hdr(xdr, &hdr);
7210 if (status)
7211 goto out;
7212 status = decode_sequence(xdr, &res->seq_res, rqstp);
7213 if (status)
7214 goto out;
7215 status = decode_putfh(xdr);
7216 if (status)
7217 goto out;
7218 status = decode_layoutcommit(xdr, rqstp, res);
7219 if (status)
7220 goto out;
7221 decode_getfattr(xdr, res->fattr, res->server);
7222out:
7223 return status;
7224}
7225
7226/*
7227 * Decode SECINFO_NO_NAME response
7228 */
7229static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7230 struct xdr_stream *xdr,
7231 struct nfs4_secinfo_res *res)
7232{
7233 struct compound_hdr hdr;
7234 int status;
7235
7236 status = decode_compound_hdr(xdr, &hdr);
7237 if (status)
7238 goto out;
7239 status = decode_sequence(xdr, &res->seq_res, rqstp);
7240 if (status)
7241 goto out;
7242 status = decode_putrootfh(xdr);
7243 if (status)
7244 goto out;
7245 status = decode_secinfo_no_name(xdr, res);
7246out:
7247 return status;
7248}
7249
7250/*
7251 * Decode TEST_STATEID response
7252 */
7253static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7254 struct xdr_stream *xdr,
7255 struct nfs41_test_stateid_res *res)
7256{
7257 struct compound_hdr hdr;
7258 int status;
7259
7260 status = decode_compound_hdr(xdr, &hdr);
7261 if (status)
7262 goto out;
7263 status = decode_sequence(xdr, &res->seq_res, rqstp);
7264 if (status)
7265 goto out;
7266 status = decode_test_stateid(xdr, res);
7267out:
7268 return status;
7269}
7270
7271/*
7272 * Decode FREE_STATEID response
7273 */
7274static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7275 struct xdr_stream *xdr,
7276 struct nfs41_free_stateid_res *res)
7277{
7278 struct compound_hdr hdr;
7279 int status;
7280
7281 status = decode_compound_hdr(xdr, &hdr);
7282 if (status)
7283 goto out;
7284 status = decode_sequence(xdr, &res->seq_res, rqstp);
7285 if (status)
7286 goto out;
7287 status = decode_free_stateid(xdr, res);
7288out:
7289 return status;
7290}
7291#endif /* CONFIG_NFS_V4_1 */
7292
7293/**
7294 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7295 * the local page cache.
7296 * @xdr: XDR stream where entry resides
7297 * @entry: buffer to fill in with entry data
7298 * @plus: boolean indicating whether this should be a readdirplus entry
7299 *
7300 * Returns zero if successful, otherwise a negative errno value is
7301 * returned.
7302 *
7303 * This function is not invoked during READDIR reply decoding, but
7304 * rather whenever an application invokes the getdents(2) system call
7305 * on a directory already in our cache.
7306 */
7307int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7308 int plus)
7309{
7310 unsigned int savep;
7311 uint32_t bitmap[3] = {0};
7312 uint32_t len;
7313 __be32 *p = xdr_inline_decode(xdr, 4);
7314 if (unlikely(!p))
7315 goto out_overflow;
7316 if (*p == xdr_zero) {
7317 p = xdr_inline_decode(xdr, 4);
7318 if (unlikely(!p))
7319 goto out_overflow;
7320 if (*p == xdr_zero)
7321 return -EAGAIN;
7322 entry->eof = 1;
7323 return -EBADCOOKIE;
7324 }
7325
7326 p = xdr_inline_decode(xdr, 12);
7327 if (unlikely(!p))
7328 goto out_overflow;
7329 entry->prev_cookie = entry->cookie;
7330 p = xdr_decode_hyper(p, &entry->cookie);
7331 entry->len = be32_to_cpup(p);
7332
7333 p = xdr_inline_decode(xdr, entry->len);
7334 if (unlikely(!p))
7335 goto out_overflow;
7336 entry->name = (const char *) p;
7337
7338 /*
7339 * In case the server doesn't return an inode number,
7340 * we fake one here. (We don't use inode number 0,
7341 * since glibc seems to choke on it...)
7342 */
7343 entry->ino = 1;
7344 entry->fattr->valid = 0;
7345
7346 if (decode_attr_bitmap(xdr, bitmap) < 0)
7347 goto out_overflow;
7348
7349 if (decode_attr_length(xdr, &len, &savep) < 0)
7350 goto out_overflow;
7351
7352 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7353 NULL, entry->label, entry->server) < 0)
7354 goto out_overflow;
7355 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7356 entry->ino = entry->fattr->mounted_on_fileid;
7357 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7358 entry->ino = entry->fattr->fileid;
7359
7360 entry->d_type = DT_UNKNOWN;
7361 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7362 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7363
7364 return 0;
7365
7366out_overflow:
7367 print_overflow_msg(__func__, xdr);
7368 return -EAGAIN;
7369}
7370
7371/*
7372 * We need to translate between nfs status return values and
7373 * the local errno values which may not be the same.
7374 */
7375static struct {
7376 int stat;
7377 int errno;
7378} nfs_errtbl[] = {
7379 { NFS4_OK, 0 },
7380 { NFS4ERR_PERM, -EPERM },
7381 { NFS4ERR_NOENT, -ENOENT },
7382 { NFS4ERR_IO, -errno_NFSERR_IO},
7383 { NFS4ERR_NXIO, -ENXIO },
7384 { NFS4ERR_ACCESS, -EACCES },
7385 { NFS4ERR_EXIST, -EEXIST },
7386 { NFS4ERR_XDEV, -EXDEV },
7387 { NFS4ERR_NOTDIR, -ENOTDIR },
7388 { NFS4ERR_ISDIR, -EISDIR },
7389 { NFS4ERR_INVAL, -EINVAL },
7390 { NFS4ERR_FBIG, -EFBIG },
7391 { NFS4ERR_NOSPC, -ENOSPC },
7392 { NFS4ERR_ROFS, -EROFS },
7393 { NFS4ERR_MLINK, -EMLINK },
7394 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7395 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7396 { NFS4ERR_DQUOT, -EDQUOT },
7397 { NFS4ERR_STALE, -ESTALE },
7398 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7399 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7400 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7401 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7402 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7403 { NFS4ERR_BADTYPE, -EBADTYPE },
7404 { NFS4ERR_LOCKED, -EAGAIN },
7405 { NFS4ERR_SYMLINK, -ELOOP },
7406 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7407 { NFS4ERR_DEADLOCK, -EDEADLK },
7408 { -1, -EIO }
7409};
7410
7411/*
7412 * Convert an NFS error code to a local one.
7413 * This one is used jointly by NFSv2 and NFSv3.
7414 */
7415static int
7416nfs4_stat_to_errno(int stat)
7417{
7418 int i;
7419 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7420 if (nfs_errtbl[i].stat == stat)
7421 return nfs_errtbl[i].errno;
7422 }
7423 if (stat <= 10000 || stat > 10100) {
7424 /* The server is looney tunes. */
7425 return -EREMOTEIO;
7426 }
7427 /* If we cannot translate the error, the recovery routines should
7428 * handle it.
7429 * Note: remaining NFSv4 error codes have values > 10000, so should
7430 * not conflict with native Linux error codes.
7431 */
7432 return -stat;
7433}
7434
7435#ifdef CONFIG_NFS_V4_2
7436#include "nfs42xdr.c"
7437#endif /* CONFIG_NFS_V4_2 */
7438
7439#define PROC(proc, argtype, restype) \
7440[NFSPROC4_CLNT_##proc] = { \
7441 .p_proc = NFSPROC4_COMPOUND, \
7442 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7443 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7444 .p_arglen = NFS4_##argtype##_sz, \
7445 .p_replen = NFS4_##restype##_sz, \
7446 .p_statidx = NFSPROC4_CLNT_##proc, \
7447 .p_name = #proc, \
7448}
7449
7450#define STUB(proc) \
7451[NFSPROC4_CLNT_##proc] = { \
7452 .p_name = #proc, \
7453}
7454
7455struct rpc_procinfo nfs4_procedures[] = {
7456 PROC(READ, enc_read, dec_read),
7457 PROC(WRITE, enc_write, dec_write),
7458 PROC(COMMIT, enc_commit, dec_commit),
7459 PROC(OPEN, enc_open, dec_open),
7460 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7461 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7462 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7463 PROC(CLOSE, enc_close, dec_close),
7464 PROC(SETATTR, enc_setattr, dec_setattr),
7465 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7466 PROC(RENEW, enc_renew, dec_renew),
7467 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7468 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7469 PROC(LOCK, enc_lock, dec_lock),
7470 PROC(LOCKT, enc_lockt, dec_lockt),
7471 PROC(LOCKU, enc_locku, dec_locku),
7472 PROC(ACCESS, enc_access, dec_access),
7473 PROC(GETATTR, enc_getattr, dec_getattr),
7474 PROC(LOOKUP, enc_lookup, dec_lookup),
7475 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7476 PROC(REMOVE, enc_remove, dec_remove),
7477 PROC(RENAME, enc_rename, dec_rename),
7478 PROC(LINK, enc_link, dec_link),
7479 PROC(SYMLINK, enc_symlink, dec_symlink),
7480 PROC(CREATE, enc_create, dec_create),
7481 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7482 PROC(STATFS, enc_statfs, dec_statfs),
7483 PROC(READLINK, enc_readlink, dec_readlink),
7484 PROC(READDIR, enc_readdir, dec_readdir),
7485 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7486 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7487 PROC(GETACL, enc_getacl, dec_getacl),
7488 PROC(SETACL, enc_setacl, dec_setacl),
7489 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7490 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7491 PROC(SECINFO, enc_secinfo, dec_secinfo),
7492 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7493#if defined(CONFIG_NFS_V4_1)
7494 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7495 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7496 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7497 PROC(SEQUENCE, enc_sequence, dec_sequence),
7498 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7499 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7500 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7501 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7502 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7503 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7504 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7505 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7506 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7507 STUB(GETDEVICELIST),
7508 PROC(BIND_CONN_TO_SESSION,
7509 enc_bind_conn_to_session, dec_bind_conn_to_session),
7510 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7511#endif /* CONFIG_NFS_V4_1 */
7512#ifdef CONFIG_NFS_V4_2
7513 PROC(SEEK, enc_seek, dec_seek),
7514 PROC(ALLOCATE, enc_allocate, dec_allocate),
7515 PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
7516 PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7517 PROC(CLONE, enc_clone, dec_clone),
7518#endif /* CONFIG_NFS_V4_2 */
7519};
7520
7521const struct rpc_version nfs_version4 = {
7522 .number = 4,
7523 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7524 .procs = nfs4_procedures
7525};
7526
7527/*
7528 * Local variables:
7529 * c-basic-offset: 8
7530 * End:
7531 */