1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/module.h>
48#include <linux/utsname.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/sunrpc/msg_prot.h>
51#include <linux/sunrpc/gss_api.h>
52#include <linux/nfs.h>
53#include <linux/nfs4.h>
54#include <linux/nfs_fs.h>
55#include <linux/nfs_common.h>
56
57#include "nfs4_fs.h"
58#include "nfs4trace.h"
59#include "internal.h"
60#include "nfs4idmap.h"
61#include "nfs4session.h"
62#include "pnfs.h"
63#include "netns.h"
64
65#define NFSDBG_FACILITY NFSDBG_XDR
66
67struct compound_hdr;
68static void encode_layoutget(struct xdr_stream *xdr,
69 const struct nfs4_layoutget_args *args,
70 struct compound_hdr *hdr);
71static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
72 struct nfs4_layoutget_res *res);
73
74/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
75#ifdef DEBUG
76#define NFS4_MAXTAGLEN 20
77#else
78#define NFS4_MAXTAGLEN 0
79#endif
80
81/* lock,open owner id:
82 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
83 */
84#define pagepad_maxsz (1)
85#define open_owner_id_maxsz (2 + 1 + 2 + 2)
86#define lock_owner_id_maxsz (2 + 1 + 2)
87#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
88#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
89#define op_encode_hdr_maxsz (1)
90#define op_decode_hdr_maxsz (2)
91#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
92#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
93#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
94#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
95#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
96 (NFS4_FHSIZE >> 2))
97#define decode_putfh_maxsz (op_decode_hdr_maxsz)
98#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
99#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
100#define encode_getfh_maxsz (op_encode_hdr_maxsz)
101#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
102 ((3+NFS4_FHSIZE) >> 2))
103#define nfs4_fattr_bitmap_maxsz 4
104#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
105#define nfstime4_maxsz (3)
106#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
107#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
108#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
109#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
110#ifdef CONFIG_NFS_V4_SECURITY_LABEL
111/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
112#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
113#else
114#define nfs4_label_maxsz 0
115#endif
116/* We support only one layout type per file system */
117#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
118/* This is based on getfattr, which uses the most attributes: */
119#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
120 3*nfstime4_maxsz + \
121 nfs4_owner_maxsz + \
122 nfs4_group_maxsz + nfs4_label_maxsz + \
123 decode_mdsthreshold_maxsz))
124#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
125 nfs4_fattr_value_maxsz)
126#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
127#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
128 1 + 2 + 1 + \
129 nfs4_owner_maxsz + \
130 nfs4_group_maxsz + \
131 nfs4_label_maxsz + \
132 1 + nfstime4_maxsz + \
133 1 + nfstime4_maxsz)
134#define encode_savefh_maxsz (op_encode_hdr_maxsz)
135#define decode_savefh_maxsz (op_decode_hdr_maxsz)
136#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
137#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
138#define encode_fsinfo_maxsz (encode_getattr_maxsz)
139/* The 5 accounts for the PNFS attributes, and assumes that at most three
140 * layout types will be returned.
141 */
142#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
143 nfs4_fattr_bitmap_maxsz + 1 + \
144 1 /* lease time */ + \
145 2 /* max filesize */ + \
146 2 /* max read */ + \
147 2 /* max write */ + \
148 nfstime4_maxsz /* time delta */ + \
149 5 /* fs layout types */ + \
150 1 /* layout blksize */ + \
151 1 /* clone blksize */ + \
152 1 /* change attr type */ + \
153 1 /* xattr support */)
154#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
155#define decode_renew_maxsz (op_decode_hdr_maxsz)
156#define encode_setclientid_maxsz \
157 (op_encode_hdr_maxsz + \
158 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
159 /* client name */ \
160 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
161 1 /* sc_prog */ + \
162 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
163 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
164 1) /* sc_cb_ident */
165#define decode_setclientid_maxsz \
166 (op_decode_hdr_maxsz + \
167 2 /* clientid */ + \
168 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
169 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
170 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
171#define encode_setclientid_confirm_maxsz \
172 (op_encode_hdr_maxsz + \
173 3 + (NFS4_VERIFIER_SIZE >> 2))
174#define decode_setclientid_confirm_maxsz \
175 (op_decode_hdr_maxsz)
176#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
177#define decode_lookup_maxsz (op_decode_hdr_maxsz)
178#define encode_lookupp_maxsz (op_encode_hdr_maxsz)
179#define decode_lookupp_maxsz (op_decode_hdr_maxsz)
180#define encode_share_access_maxsz \
181 (2)
182#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
183#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
184#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
185#define encode_open_maxsz (op_encode_hdr_maxsz + \
186 2 + encode_share_access_maxsz + 2 + \
187 1 + open_owner_id_maxsz + \
188 encode_opentype_maxsz + \
189 encode_claim_null_maxsz)
190#define decode_space_limit_maxsz (3)
191#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
192#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
193 decode_space_limit_maxsz + \
194 decode_ace_maxsz)
195#define decode_change_info_maxsz (5)
196#define decode_open_maxsz (op_decode_hdr_maxsz + \
197 decode_stateid_maxsz + \
198 decode_change_info_maxsz + 1 + \
199 nfs4_fattr_bitmap_maxsz + \
200 decode_delegation_maxsz)
201#define encode_open_confirm_maxsz \
202 (op_encode_hdr_maxsz + \
203 encode_stateid_maxsz + 1)
204#define decode_open_confirm_maxsz \
205 (op_decode_hdr_maxsz + \
206 decode_stateid_maxsz)
207#define encode_open_downgrade_maxsz \
208 (op_encode_hdr_maxsz + \
209 encode_stateid_maxsz + 1 + \
210 encode_share_access_maxsz)
211#define decode_open_downgrade_maxsz \
212 (op_decode_hdr_maxsz + \
213 decode_stateid_maxsz)
214#define encode_close_maxsz (op_encode_hdr_maxsz + \
215 1 + encode_stateid_maxsz)
216#define decode_close_maxsz (op_decode_hdr_maxsz + \
217 decode_stateid_maxsz)
218#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
219 encode_stateid_maxsz + \
220 encode_attrs_maxsz)
221#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
222 nfs4_fattr_bitmap_maxsz)
223#define encode_delegattr_maxsz (op_encode_hdr_maxsz + \
224 encode_stateid_maxsz + \
225 nfs4_fattr_bitmap_maxsz + \
226 2*nfstime4_maxsz)
227#define decode_delegattr_maxsz (decode_setattr_maxsz)
228#define encode_read_maxsz (op_encode_hdr_maxsz + \
229 encode_stateid_maxsz + 3)
230#define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz)
231#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
232 2 + encode_verifier_maxsz + 5 + \
233 nfs4_label_maxsz)
234#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
235 decode_verifier_maxsz + pagepad_maxsz)
236#define encode_readlink_maxsz (op_encode_hdr_maxsz)
237#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz)
238#define encode_write_maxsz (op_encode_hdr_maxsz + \
239 encode_stateid_maxsz + 4)
240#define decode_write_maxsz (op_decode_hdr_maxsz + \
241 2 + decode_verifier_maxsz)
242#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
243#define decode_commit_maxsz (op_decode_hdr_maxsz + \
244 decode_verifier_maxsz)
245#define encode_remove_maxsz (op_encode_hdr_maxsz + \
246 nfs4_name_maxsz)
247#define decode_remove_maxsz (op_decode_hdr_maxsz + \
248 decode_change_info_maxsz)
249#define encode_rename_maxsz (op_encode_hdr_maxsz + \
250 2 * nfs4_name_maxsz)
251#define decode_rename_maxsz (op_decode_hdr_maxsz + \
252 decode_change_info_maxsz + \
253 decode_change_info_maxsz)
254#define encode_link_maxsz (op_encode_hdr_maxsz + \
255 nfs4_name_maxsz)
256#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
257#define encode_lockowner_maxsz (2 + 1 + lock_owner_id_maxsz)
258
259#define encode_lock_maxsz (op_encode_hdr_maxsz + \
260 7 + \
261 1 + encode_stateid_maxsz + 1 + \
262 encode_lockowner_maxsz)
263#define decode_lock_denied_maxsz \
264 (2 + 2 + 1 + 2 + 1 + lock_owner_id_maxsz)
265#define decode_lock_maxsz (op_decode_hdr_maxsz + \
266 decode_lock_denied_maxsz)
267#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
268 encode_lockowner_maxsz)
269#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
270 decode_lock_denied_maxsz)
271#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
272 encode_stateid_maxsz + \
273 4)
274#define decode_locku_maxsz (op_decode_hdr_maxsz + \
275 decode_stateid_maxsz)
276#define encode_release_lockowner_maxsz \
277 (op_encode_hdr_maxsz + \
278 encode_lockowner_maxsz)
279#define decode_release_lockowner_maxsz \
280 (op_decode_hdr_maxsz)
281#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
282#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
283#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
284 1 + nfs4_name_maxsz + \
285 1 + \
286 nfs4_fattr_maxsz)
287#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
288#define encode_create_maxsz (op_encode_hdr_maxsz + \
289 1 + 2 + nfs4_name_maxsz + \
290 encode_attrs_maxsz)
291#define decode_create_maxsz (op_decode_hdr_maxsz + \
292 decode_change_info_maxsz + \
293 nfs4_fattr_bitmap_maxsz)
294#define encode_statfs_maxsz (encode_getattr_maxsz)
295#define decode_statfs_maxsz (decode_getattr_maxsz)
296#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
297#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
298#define encode_getacl_maxsz (encode_getattr_maxsz)
299#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
300 nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz)
301#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
302 encode_stateid_maxsz + 3)
303#define decode_setacl_maxsz (decode_setattr_maxsz)
304#define encode_fs_locations_maxsz \
305 (encode_getattr_maxsz)
306#define decode_fs_locations_maxsz \
307 (pagepad_maxsz)
308#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
309#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
310
311#if defined(CONFIG_NFS_V4_1)
312#define NFS4_MAX_MACHINE_NAME_LEN (64)
313#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
314 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
315
316#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
317 encode_verifier_maxsz + \
318 1 /* co_ownerid.len */ + \
319 /* eia_clientowner */ \
320 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
321 1 /* flags */ + \
322 1 /* spa_how */ + \
323 /* max is SP4_MACH_CRED (for now) */ + \
324 1 + NFS4_OP_MAP_NUM_WORDS + \
325 1 + NFS4_OP_MAP_NUM_WORDS + \
326 1 /* implementation id array of size 1 */ + \
327 1 /* nii_domain */ + \
328 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
329 1 /* nii_name */ + \
330 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
331 3 /* nii_date */)
332#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
333 2 /* eir_clientid */ + \
334 1 /* eir_sequenceid */ + \
335 1 /* eir_flags */ + \
336 1 /* spr_how */ + \
337 /* max is SP4_MACH_CRED (for now) */ + \
338 1 + NFS4_OP_MAP_NUM_WORDS + \
339 1 + NFS4_OP_MAP_NUM_WORDS + \
340 2 /* eir_server_owner.so_minor_id */ + \
341 /* eir_server_owner.so_major_id<> */ \
342 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
343 /* eir_server_scope<> */ \
344 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
345 1 /* eir_server_impl_id array length */ + \
346 1 /* nii_domain */ + \
347 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
348 1 /* nii_name */ + \
349 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
350 3 /* nii_date */)
351#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
352#define decode_channel_attrs_maxsz (6 + \
353 1 /* ca_rdma_ird.len */ + \
354 1 /* ca_rdma_ird */)
355#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
356 2 /* csa_clientid */ + \
357 1 /* csa_sequence */ + \
358 1 /* csa_flags */ + \
359 encode_channel_attrs_maxsz + \
360 encode_channel_attrs_maxsz + \
361 1 /* csa_cb_program */ + \
362 1 /* csa_sec_parms.len (1) */ + \
363 1 /* cb_secflavor (AUTH_SYS) */ + \
364 1 /* stamp */ + \
365 1 /* machinename.len */ + \
366 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
367 1 /* uid */ + \
368 1 /* gid */ + \
369 1 /* gids.len (0) */)
370#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
371 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
372 1 /* csr_sequence */ + \
373 1 /* csr_flags */ + \
374 decode_channel_attrs_maxsz + \
375 decode_channel_attrs_maxsz)
376#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
377 /* bctsa_sessid */ \
378 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
379 1 /* bctsa_dir */ + \
380 1 /* bctsa_use_conn_in_rdma_mode */)
381#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
382 /* bctsr_sessid */ \
383 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
384 1 /* bctsr_dir */ + \
385 1 /* bctsr_use_conn_in_rdma_mode */)
386#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
387#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
388#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
389#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
390#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
392#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
393 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
394#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
395#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
396#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
397 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
398 1 /* layout type */ + \
399 1 /* maxcount */ + \
400 1 /* bitmap size */ + \
401 1 /* notification bitmap length */ + \
402 1 /* notification bitmap, word 0 */)
403#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
404 1 /* layout type */ + \
405 1 /* opaque devaddr4 length */ + \
406 /* devaddr4 payload is read into page */ \
407 1 /* notification bitmap length */ + \
408 1 /* notification bitmap, word 0 */ + \
409 pagepad_maxsz /* possible XDR padding */)
410#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
411 encode_stateid_maxsz)
412#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
413 decode_stateid_maxsz + \
414 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \
415 pagepad_maxsz)
416#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
417 2 /* offset */ + \
418 2 /* length */ + \
419 1 /* reclaim */ + \
420 encode_stateid_maxsz + \
421 1 /* new offset (true) */ + \
422 2 /* last byte written */ + \
423 1 /* nt_timechanged (false) */ + \
424 1 /* layoutupdate4 layout type */ + \
425 1 /* layoutupdate4 opaqueue len */)
426 /* the actual content of layoutupdate4 should
427 be allocated by drivers and spliced in
428 using xdr_write_pages */
429#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
430#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
431 encode_stateid_maxsz + \
432 1 + \
433 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
434#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
435 1 + decode_stateid_maxsz)
436#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
437#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
438#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
439 XDR_QUADLEN(NFS4_STATEID_SIZE))
440#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
441#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
442 XDR_QUADLEN(NFS4_STATEID_SIZE))
443#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
444#else /* CONFIG_NFS_V4_1 */
445#define encode_sequence_maxsz 0
446#define decode_sequence_maxsz 0
447#define encode_layoutreturn_maxsz 0
448#define decode_layoutreturn_maxsz 0
449#define encode_layoutget_maxsz 0
450#define decode_layoutget_maxsz 0
451#endif /* CONFIG_NFS_V4_1 */
452
453#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
454#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
455#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
456 encode_sequence_maxsz + \
457 encode_putfh_maxsz + \
458 encode_read_maxsz)
459#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
460 decode_sequence_maxsz + \
461 decode_putfh_maxsz + \
462 decode_read_maxsz)
463#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
464 encode_sequence_maxsz + \
465 encode_putfh_maxsz + \
466 encode_readlink_maxsz)
467#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
468 decode_sequence_maxsz + \
469 decode_putfh_maxsz + \
470 decode_readlink_maxsz)
471#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
472 encode_sequence_maxsz + \
473 encode_putfh_maxsz + \
474 encode_readdir_maxsz)
475#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
476 decode_sequence_maxsz + \
477 decode_putfh_maxsz + \
478 decode_readdir_maxsz)
479#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
480 encode_sequence_maxsz + \
481 encode_putfh_maxsz + \
482 encode_write_maxsz + \
483 encode_getattr_maxsz)
484#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
485 decode_sequence_maxsz + \
486 decode_putfh_maxsz + \
487 decode_write_maxsz + \
488 decode_getattr_maxsz)
489#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
490 encode_sequence_maxsz + \
491 encode_putfh_maxsz + \
492 encode_commit_maxsz)
493#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
494 decode_sequence_maxsz + \
495 decode_putfh_maxsz + \
496 decode_commit_maxsz)
497#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
498 encode_sequence_maxsz + \
499 encode_putfh_maxsz + \
500 encode_open_maxsz + \
501 encode_access_maxsz + \
502 encode_getfh_maxsz + \
503 encode_getattr_maxsz + \
504 encode_layoutget_maxsz)
505#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
506 decode_sequence_maxsz + \
507 decode_putfh_maxsz + \
508 decode_open_maxsz + \
509 decode_access_maxsz + \
510 decode_getfh_maxsz + \
511 decode_getattr_maxsz + \
512 decode_layoutget_maxsz)
513#define NFS4_enc_open_confirm_sz \
514 (compound_encode_hdr_maxsz + \
515 encode_putfh_maxsz + \
516 encode_open_confirm_maxsz)
517#define NFS4_dec_open_confirm_sz \
518 (compound_decode_hdr_maxsz + \
519 decode_putfh_maxsz + \
520 decode_open_confirm_maxsz)
521#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
522 encode_sequence_maxsz + \
523 encode_putfh_maxsz + \
524 encode_open_maxsz + \
525 encode_access_maxsz + \
526 encode_getattr_maxsz + \
527 encode_layoutget_maxsz)
528#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
529 decode_sequence_maxsz + \
530 decode_putfh_maxsz + \
531 decode_open_maxsz + \
532 decode_access_maxsz + \
533 decode_getattr_maxsz + \
534 decode_layoutget_maxsz)
535#define NFS4_enc_open_downgrade_sz \
536 (compound_encode_hdr_maxsz + \
537 encode_sequence_maxsz + \
538 encode_putfh_maxsz + \
539 encode_layoutreturn_maxsz + \
540 encode_open_downgrade_maxsz)
541#define NFS4_dec_open_downgrade_sz \
542 (compound_decode_hdr_maxsz + \
543 decode_sequence_maxsz + \
544 decode_putfh_maxsz + \
545 decode_layoutreturn_maxsz + \
546 decode_open_downgrade_maxsz)
547#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
548 encode_sequence_maxsz + \
549 encode_putfh_maxsz + \
550 encode_layoutreturn_maxsz + \
551 encode_close_maxsz + \
552 encode_getattr_maxsz)
553#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
554 decode_sequence_maxsz + \
555 decode_putfh_maxsz + \
556 decode_layoutreturn_maxsz + \
557 decode_close_maxsz + \
558 decode_getattr_maxsz)
559#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
560 encode_sequence_maxsz + \
561 encode_putfh_maxsz + \
562 encode_setattr_maxsz + \
563 encode_getattr_maxsz)
564#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
565 decode_sequence_maxsz + \
566 decode_putfh_maxsz + \
567 decode_setattr_maxsz + \
568 decode_getattr_maxsz)
569#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
570 encode_sequence_maxsz + \
571 encode_putfh_maxsz + \
572 encode_fsinfo_maxsz)
573#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
574 decode_sequence_maxsz + \
575 decode_putfh_maxsz + \
576 decode_fsinfo_maxsz)
577#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
578 encode_renew_maxsz)
579#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
580 decode_renew_maxsz)
581#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
582 encode_setclientid_maxsz)
583#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
584 decode_setclientid_maxsz)
585#define NFS4_enc_setclientid_confirm_sz \
586 (compound_encode_hdr_maxsz + \
587 encode_setclientid_confirm_maxsz)
588#define NFS4_dec_setclientid_confirm_sz \
589 (compound_decode_hdr_maxsz + \
590 decode_setclientid_confirm_maxsz)
591#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
592 encode_sequence_maxsz + \
593 encode_putfh_maxsz + \
594 encode_lock_maxsz)
595#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_lock_maxsz)
599#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
600 encode_sequence_maxsz + \
601 encode_putfh_maxsz + \
602 encode_lockt_maxsz)
603#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
604 decode_sequence_maxsz + \
605 decode_putfh_maxsz + \
606 decode_lockt_maxsz)
607#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
608 encode_sequence_maxsz + \
609 encode_putfh_maxsz + \
610 encode_locku_maxsz)
611#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
612 decode_sequence_maxsz + \
613 decode_putfh_maxsz + \
614 decode_locku_maxsz)
615#define NFS4_enc_release_lockowner_sz \
616 (compound_encode_hdr_maxsz + \
617 encode_lockowner_maxsz)
618#define NFS4_dec_release_lockowner_sz \
619 (compound_decode_hdr_maxsz + \
620 decode_release_lockowner_maxsz)
621#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
622 encode_sequence_maxsz + \
623 encode_putfh_maxsz + \
624 encode_access_maxsz + \
625 encode_getattr_maxsz)
626#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
627 decode_sequence_maxsz + \
628 decode_putfh_maxsz + \
629 decode_access_maxsz + \
630 decode_getattr_maxsz)
631#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
632 encode_sequence_maxsz + \
633 encode_putfh_maxsz + \
634 encode_getattr_maxsz + \
635 encode_renew_maxsz)
636#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
637 decode_sequence_maxsz + \
638 decode_putfh_maxsz + \
639 decode_getattr_maxsz + \
640 decode_renew_maxsz)
641#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
642 encode_sequence_maxsz + \
643 encode_putfh_maxsz + \
644 encode_lookup_maxsz + \
645 encode_getattr_maxsz + \
646 encode_getfh_maxsz)
647#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
648 decode_sequence_maxsz + \
649 decode_putfh_maxsz + \
650 decode_lookup_maxsz + \
651 decode_getattr_maxsz + \
652 decode_getfh_maxsz)
653#define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \
654 encode_sequence_maxsz + \
655 encode_putfh_maxsz + \
656 encode_lookupp_maxsz + \
657 encode_getattr_maxsz + \
658 encode_getfh_maxsz)
659#define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \
660 decode_sequence_maxsz + \
661 decode_putfh_maxsz + \
662 decode_lookupp_maxsz + \
663 decode_getattr_maxsz + \
664 decode_getfh_maxsz)
665#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
666 encode_sequence_maxsz + \
667 encode_putrootfh_maxsz + \
668 encode_getattr_maxsz + \
669 encode_getfh_maxsz)
670#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
671 decode_sequence_maxsz + \
672 decode_putrootfh_maxsz + \
673 decode_getattr_maxsz + \
674 decode_getfh_maxsz)
675#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
676 encode_sequence_maxsz + \
677 encode_putfh_maxsz + \
678 encode_remove_maxsz)
679#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
680 decode_sequence_maxsz + \
681 decode_putfh_maxsz + \
682 decode_remove_maxsz)
683#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
684 encode_sequence_maxsz + \
685 encode_putfh_maxsz + \
686 encode_savefh_maxsz + \
687 encode_putfh_maxsz + \
688 encode_rename_maxsz)
689#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
690 decode_sequence_maxsz + \
691 decode_putfh_maxsz + \
692 decode_savefh_maxsz + \
693 decode_putfh_maxsz + \
694 decode_rename_maxsz)
695#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
696 encode_sequence_maxsz + \
697 encode_putfh_maxsz + \
698 encode_savefh_maxsz + \
699 encode_putfh_maxsz + \
700 encode_link_maxsz + \
701 encode_restorefh_maxsz + \
702 encode_getattr_maxsz)
703#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
704 decode_sequence_maxsz + \
705 decode_putfh_maxsz + \
706 decode_savefh_maxsz + \
707 decode_putfh_maxsz + \
708 decode_link_maxsz + \
709 decode_restorefh_maxsz + \
710 decode_getattr_maxsz)
711#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
712 encode_sequence_maxsz + \
713 encode_putfh_maxsz + \
714 encode_symlink_maxsz + \
715 encode_getattr_maxsz + \
716 encode_getfh_maxsz)
717#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
718 decode_sequence_maxsz + \
719 decode_putfh_maxsz + \
720 decode_symlink_maxsz + \
721 decode_getattr_maxsz + \
722 decode_getfh_maxsz)
723#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
724 encode_sequence_maxsz + \
725 encode_putfh_maxsz + \
726 encode_create_maxsz + \
727 encode_getfh_maxsz + \
728 encode_getattr_maxsz)
729#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
730 decode_sequence_maxsz + \
731 decode_putfh_maxsz + \
732 decode_create_maxsz + \
733 decode_getfh_maxsz + \
734 decode_getattr_maxsz)
735#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
736 encode_sequence_maxsz + \
737 encode_putfh_maxsz + \
738 encode_getattr_maxsz)
739#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
740 decode_sequence_maxsz + \
741 decode_putfh_maxsz + \
742 decode_getattr_maxsz)
743#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
744 encode_sequence_maxsz + \
745 encode_putfh_maxsz + \
746 encode_statfs_maxsz)
747#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
748 decode_sequence_maxsz + \
749 decode_putfh_maxsz + \
750 decode_statfs_maxsz)
751#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
752 encode_sequence_maxsz + \
753 encode_putfh_maxsz + \
754 encode_getattr_maxsz)
755#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
756 decode_sequence_maxsz + \
757 decode_putfh_maxsz + \
758 decode_getattr_maxsz)
759#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
760 encode_sequence_maxsz + \
761 encode_putfh_maxsz + \
762 encode_layoutreturn_maxsz + \
763 encode_delegattr_maxsz + \
764 encode_delegreturn_maxsz + \
765 encode_getattr_maxsz)
766#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
767 decode_sequence_maxsz + \
768 decode_putfh_maxsz + \
769 decode_layoutreturn_maxsz + \
770 decode_delegattr_maxsz + \
771 decode_delegreturn_maxsz + \
772 decode_getattr_maxsz)
773#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
774 encode_sequence_maxsz + \
775 encode_putfh_maxsz + \
776 encode_getacl_maxsz)
777#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
778 decode_sequence_maxsz + \
779 decode_putfh_maxsz + \
780 decode_getacl_maxsz)
781#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
782 encode_sequence_maxsz + \
783 encode_putfh_maxsz + \
784 encode_setacl_maxsz)
785#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
786 decode_sequence_maxsz + \
787 decode_putfh_maxsz + \
788 decode_setacl_maxsz)
789#define NFS4_enc_fs_locations_sz \
790 (compound_encode_hdr_maxsz + \
791 encode_sequence_maxsz + \
792 encode_putfh_maxsz + \
793 encode_lookup_maxsz + \
794 encode_fs_locations_maxsz + \
795 encode_renew_maxsz)
796#define NFS4_dec_fs_locations_sz \
797 (compound_decode_hdr_maxsz + \
798 decode_sequence_maxsz + \
799 decode_putfh_maxsz + \
800 decode_lookup_maxsz + \
801 decode_fs_locations_maxsz + \
802 decode_renew_maxsz)
803#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
804 encode_sequence_maxsz + \
805 encode_putfh_maxsz + \
806 encode_secinfo_maxsz)
807#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
808 decode_sequence_maxsz + \
809 decode_putfh_maxsz + \
810 decode_secinfo_maxsz)
811#define NFS4_enc_fsid_present_sz \
812 (compound_encode_hdr_maxsz + \
813 encode_sequence_maxsz + \
814 encode_putfh_maxsz + \
815 encode_getfh_maxsz + \
816 encode_renew_maxsz)
817#define NFS4_dec_fsid_present_sz \
818 (compound_decode_hdr_maxsz + \
819 decode_sequence_maxsz + \
820 decode_putfh_maxsz + \
821 decode_getfh_maxsz + \
822 decode_renew_maxsz)
823#if defined(CONFIG_NFS_V4_1)
824#define NFS4_enc_bind_conn_to_session_sz \
825 (compound_encode_hdr_maxsz + \
826 encode_bind_conn_to_session_maxsz)
827#define NFS4_dec_bind_conn_to_session_sz \
828 (compound_decode_hdr_maxsz + \
829 decode_bind_conn_to_session_maxsz)
830#define NFS4_enc_exchange_id_sz \
831 (compound_encode_hdr_maxsz + \
832 encode_exchange_id_maxsz)
833#define NFS4_dec_exchange_id_sz \
834 (compound_decode_hdr_maxsz + \
835 decode_exchange_id_maxsz)
836#define NFS4_enc_create_session_sz \
837 (compound_encode_hdr_maxsz + \
838 encode_create_session_maxsz)
839#define NFS4_dec_create_session_sz \
840 (compound_decode_hdr_maxsz + \
841 decode_create_session_maxsz)
842#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
843 encode_destroy_session_maxsz)
844#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
845 decode_destroy_session_maxsz)
846#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
847 encode_destroy_clientid_maxsz)
848#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
849 decode_destroy_clientid_maxsz)
850#define NFS4_enc_sequence_sz \
851 (compound_decode_hdr_maxsz + \
852 encode_sequence_maxsz)
853#define NFS4_dec_sequence_sz \
854 (compound_decode_hdr_maxsz + \
855 decode_sequence_maxsz)
856#endif
857#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
858 encode_sequence_maxsz + \
859 encode_putrootfh_maxsz + \
860 encode_fsinfo_maxsz)
861#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
862 decode_sequence_maxsz + \
863 decode_putrootfh_maxsz + \
864 decode_fsinfo_maxsz)
865#if defined(CONFIG_NFS_V4_1)
866#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
867 encode_sequence_maxsz + \
868 encode_reclaim_complete_maxsz)
869#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
870 decode_sequence_maxsz + \
871 decode_reclaim_complete_maxsz)
872#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
873 encode_sequence_maxsz +\
874 encode_getdeviceinfo_maxsz)
875#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
876 decode_sequence_maxsz + \
877 decode_getdeviceinfo_maxsz)
878#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
879 encode_sequence_maxsz + \
880 encode_putfh_maxsz + \
881 encode_layoutget_maxsz)
882#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
883 decode_sequence_maxsz + \
884 decode_putfh_maxsz + \
885 decode_layoutget_maxsz)
886#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
887 encode_sequence_maxsz +\
888 encode_putfh_maxsz + \
889 encode_layoutcommit_maxsz + \
890 encode_getattr_maxsz)
891#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
892 decode_sequence_maxsz + \
893 decode_putfh_maxsz + \
894 decode_layoutcommit_maxsz + \
895 decode_getattr_maxsz)
896#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
897 encode_sequence_maxsz + \
898 encode_putfh_maxsz + \
899 encode_layoutreturn_maxsz)
900#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
901 decode_sequence_maxsz + \
902 decode_putfh_maxsz + \
903 decode_layoutreturn_maxsz)
904#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
905 encode_sequence_maxsz + \
906 encode_putrootfh_maxsz +\
907 encode_secinfo_no_name_maxsz)
908#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
909 decode_sequence_maxsz + \
910 decode_putrootfh_maxsz + \
911 decode_secinfo_no_name_maxsz)
912#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
913 encode_sequence_maxsz + \
914 encode_test_stateid_maxsz)
915#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
916 decode_sequence_maxsz + \
917 decode_test_stateid_maxsz)
918#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
919 encode_sequence_maxsz + \
920 encode_free_stateid_maxsz)
921#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
922 decode_sequence_maxsz + \
923 decode_free_stateid_maxsz)
924
925const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
926 compound_encode_hdr_maxsz +
927 encode_sequence_maxsz +
928 encode_putfh_maxsz +
929 encode_getattr_maxsz) *
930 XDR_UNIT);
931
932const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
933 compound_decode_hdr_maxsz +
934 decode_sequence_maxsz +
935 decode_putfh_maxsz) *
936 XDR_UNIT);
937
938const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
939 compound_decode_hdr_maxsz +
940 decode_sequence_maxsz) *
941 XDR_UNIT);
942EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
943#endif /* CONFIG_NFS_V4_1 */
944
945static const umode_t nfs_type2fmt[] = {
946 [NF4BAD] = 0,
947 [NF4REG] = S_IFREG,
948 [NF4DIR] = S_IFDIR,
949 [NF4BLK] = S_IFBLK,
950 [NF4CHR] = S_IFCHR,
951 [NF4LNK] = S_IFLNK,
952 [NF4SOCK] = S_IFSOCK,
953 [NF4FIFO] = S_IFIFO,
954 [NF4ATTRDIR] = 0,
955 [NF4NAMEDATTR] = 0,
956};
957
958struct compound_hdr {
959 int32_t status;
960 uint32_t nops;
961 __be32 * nops_p;
962 uint32_t taglen;
963 char * tag;
964 uint32_t replen; /* expected reply words */
965 u32 minorversion;
966};
967
968static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
969{
970 __be32 *p = xdr_reserve_space(xdr, nbytes);
971 BUG_ON(!p);
972 return p;
973}
974
975static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
976{
977 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0);
978}
979
980static void encode_uint32(struct xdr_stream *xdr, u32 n)
981{
982 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
983}
984
985static void encode_uint64(struct xdr_stream *xdr, u64 n)
986{
987 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
988}
989
990static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr,
991 const __u32 *bitmap, size_t len)
992{
993 ssize_t ret;
994
995 /* Trim empty words */
996 while (len > 0 && bitmap[len-1] == 0)
997 len--;
998 ret = xdr_stream_encode_uint32_array(xdr, array: bitmap, array_size: len);
999 if (WARN_ON_ONCE(ret < 0))
1000 return ret;
1001 return len;
1002}
1003
1004static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask,
1005 __u32 *res, size_t len)
1006{
1007 size_t i;
1008 __u32 tmp;
1009
1010 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0))
1011 len--;
1012 for (i = len; i-- > 0;) {
1013 tmp = bitmap[i] & mask[i];
1014 res[i] = tmp;
1015 }
1016 return len;
1017}
1018
1019static void encode_nfs4_seqid(struct xdr_stream *xdr,
1020 const struct nfs_seqid *seqid)
1021{
1022 if (seqid != NULL)
1023 encode_uint32(xdr, n: seqid->sequence->counter);
1024 else
1025 encode_uint32(xdr, n: 0);
1026}
1027
1028static void encode_compound_hdr(struct xdr_stream *xdr,
1029 struct rpc_rqst *req,
1030 struct compound_hdr *hdr)
1031{
1032 __be32 *p;
1033
1034 /* initialize running count of expected bytes in reply.
1035 * NOTE: the replied tag SHOULD be the same is the one sent,
1036 * but this is not required as a MUST for the server to do so. */
1037 hdr->replen = 3 + hdr->taglen;
1038
1039 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
1040 encode_string(xdr, len: hdr->taglen, str: hdr->tag);
1041 p = reserve_space(xdr, nbytes: 8);
1042 *p++ = cpu_to_be32(hdr->minorversion);
1043 hdr->nops_p = p;
1044 *p = cpu_to_be32(hdr->nops);
1045}
1046
1047static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
1048 uint32_t replen,
1049 struct compound_hdr *hdr)
1050{
1051 encode_uint32(xdr, n: op);
1052 hdr->nops++;
1053 hdr->replen += replen;
1054}
1055
1056static void encode_nops(struct compound_hdr *hdr)
1057{
1058 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
1059 *hdr->nops_p = htonl(hdr->nops);
1060}
1061
1062static void encode_nfs4_stateid(struct xdr_stream *xdr,
1063 const nfs4_stateid *stateid)
1064{
1065 encode_opaque_fixed(xdr, buf: stateid->data, NFS4_STATEID_SIZE);
1066}
1067
1068static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
1069{
1070 encode_opaque_fixed(xdr, buf: 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, val: 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, bitmap: bmval, ARRAY_SIZE(bmval));
1162 xdr_stream_encode_opaque_inline(xdr, ptr: (void **)&p, len);
1163
1164 if (bmval[0] & FATTR4_WORD0_SIZE)
1165 p = xdr_encode_hyper(p, val: 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, ptr: owner_name, len: owner_namelen);
1170 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1171 p = xdr_encode_opaque(p, ptr: owner_group, len: 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, t: &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, t: &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, ptr: label->label, len: 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: OP_ACCESS, decode_access_maxsz, hdr);
1203 encode_uint32(xdr, n: 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: OP_CLOSE, decode_close_maxsz, hdr);
1209 encode_nfs4_seqid(xdr, seqid: arg->seqid);
1210 encode_nfs4_stateid(xdr, stateid: &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: OP_COMMIT, decode_commit_maxsz, hdr);
1218 p = reserve_space(xdr, nbytes: 12);
1219 p = xdr_encode_hyper(p, val: 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: OP_CREATE, decode_create_maxsz, hdr);
1228 encode_uint32(xdr, n: create->ftype);
1229
1230 switch (create->ftype) {
1231 case NF4LNK:
1232 p = reserve_space(xdr, nbytes: 4);
1233 *p = cpu_to_be32(create->u.symlink.len);
1234 xdr_write_pages(xdr, pages: create->u.symlink.pages, base: 0,
1235 len: create->u.symlink.len);
1236 xdr->buf->flags |= XDRBUF_WRITE;
1237 break;
1238
1239 case NF4BLK: case NF4CHR:
1240 p = reserve_space(xdr, nbytes: 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, len: create->name->len, str: create->name->name);
1250 encode_attrs(xdr, iap: create->attrs, label: create->label, umask: &create->umask,
1251 server: create->server, attrmask: 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: 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, res: 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, bitmap: nfs4_fattr_bitmap, mask: 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, bitmap: open_bitmap, mask: bitmask, len: 3, hdr);
1281}
1282
1283static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1284{
1285 encode_getattr(xdr, bitmap: nfs4_fsinfo_bitmap, mask: 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, bitmap: nfs4_fs_locations_bitmap, mask: 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: 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: OP_LINK, decode_link_maxsz, hdr);
1303 encode_string(xdr, len: name->len, str: name->name);
1304}
1305
1306static inline int nfs4_lock_type(struct file_lock *fl, int block)
1307{
1308 if (lock_is_read(fl))
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, nbytes: 32);
1325 p = xdr_encode_hyper(p, val: lowner->clientid);
1326 *p++ = cpu_to_be32(20);
1327 p = xdr_encode_opaque_fixed(p, ptr: "lock id:", len: 8);
1328 *p++ = cpu_to_be32(lowner->s_dev);
1329 xdr_encode_hyper(p, val: 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: OP_LOCK, decode_lock_maxsz, hdr);
1341 p = reserve_space(xdr, nbytes: 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, val: args->fl->fl_start);
1345 p = xdr_encode_hyper(p, val: nfs4_lock_length(fl: args->fl));
1346 *p = cpu_to_be32(args->new_lock_owner);
1347 if (args->new_lock_owner){
1348 encode_nfs4_seqid(xdr, seqid: args->open_seqid);
1349 encode_nfs4_stateid(xdr, stateid: &args->open_stateid);
1350 encode_nfs4_seqid(xdr, seqid: args->lock_seqid);
1351 encode_lockowner(xdr, lowner: &args->lock_owner);
1352 }
1353 else {
1354 encode_nfs4_stateid(xdr, stateid: &args->lock_stateid);
1355 encode_nfs4_seqid(xdr, seqid: 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: OP_LOCKT, decode_lockt_maxsz, hdr);
1364 p = reserve_space(xdr, nbytes: 20);
1365 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1366 p = xdr_encode_hyper(p, val: args->fl->fl_start);
1367 p = xdr_encode_hyper(p, val: nfs4_lock_length(fl: args->fl));
1368 encode_lockowner(xdr, lowner: &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: OP_LOCKU, decode_locku_maxsz, hdr);
1376 encode_uint32(xdr, n: nfs4_lock_type(fl: args->fl, block: 0));
1377 encode_nfs4_seqid(xdr, seqid: args->seqid);
1378 encode_nfs4_stateid(xdr, stateid: &args->stateid);
1379 p = reserve_space(xdr, nbytes: 16);
1380 p = xdr_encode_hyper(p, val: args->fl->fl_start);
1381 xdr_encode_hyper(p, val: nfs4_lock_length(fl: 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: 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: OP_LOOKUP, decode_lookup_maxsz, hdr);
1393 encode_string(xdr, len: name->len, str: name->name);
1394}
1395
1396static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr)
1397{
1398 encode_op_hdr(xdr, op: 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, nbytes: 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 28
1416 */
1417 encode_nfs4_seqid(xdr, seqid: arg->seqid);
1418 encode_share_access(xdr, share_access: arg->share_access);
1419 p = reserve_space(xdr, nbytes: 40);
1420 p = xdr_encode_hyper(p, val: arg->clientid);
1421 *p++ = cpu_to_be32(28);
1422 p = xdr_encode_opaque_fixed(p, ptr: "open id:", len: 8);
1423 *p++ = cpu_to_be32(arg->server->s_dev);
1424 p = xdr_encode_hyper(p, val: arg->id.uniquifier);
1425 xdr_encode_hyper(p, val: 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, nbytes: 4);
1433 switch(arg->createmode) {
1434 case NFS4_CREATE_UNCHECKED:
1435 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1436 encode_attrs(xdr, iap: arg->u.attrs, label: arg->label, umask: &arg->umask,
1437 server: arg->server, attrmask: arg->server->attr_bitmask);
1438 break;
1439 case NFS4_CREATE_GUARDED:
1440 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1441 encode_attrs(xdr, iap: arg->u.attrs, label: arg->label, umask: &arg->umask,
1442 server: arg->server, attrmask: arg->server->attr_bitmask);
1443 break;
1444 case NFS4_CREATE_EXCLUSIVE:
1445 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1446 encode_nfs4_verifier(xdr, verf: &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, verf: &arg->u.verifier);
1451 encode_attrs(xdr, iap: arg->u.attrs, label: arg->label, umask: &arg->umask,
1452 server: arg->server, attrmask: 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, nbytes: 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, u32 delegation_type)
1472{
1473 __be32 *p;
1474
1475 p = reserve_space(xdr, nbytes: 4);
1476 switch (delegation_type) {
1477 case NFS4_OPEN_DELEGATE_NONE:
1478 case NFS4_OPEN_DELEGATE_READ:
1479 case NFS4_OPEN_DELEGATE_WRITE:
1480 case NFS4_OPEN_DELEGATE_READ_ATTRS_DELEG:
1481 case NFS4_OPEN_DELEGATE_WRITE_ATTRS_DELEG:
1482 *p = cpu_to_be32(delegation_type);
1483 break;
1484 default:
1485 BUG();
1486 }
1487}
1488
1489static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1490{
1491 __be32 *p;
1492
1493 p = reserve_space(xdr, nbytes: 4);
1494 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1495 encode_string(xdr, len: name->len, str: name->name);
1496}
1497
1498static inline void encode_claim_previous(struct xdr_stream *xdr, u32 type)
1499{
1500 __be32 *p;
1501
1502 p = reserve_space(xdr, nbytes: 4);
1503 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1504 encode_delegation_type(xdr, delegation_type: type);
1505}
1506
1507static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1508{
1509 __be32 *p;
1510
1511 p = reserve_space(xdr, nbytes: 4);
1512 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1513 encode_nfs4_stateid(xdr, stateid);
1514 encode_string(xdr, len: name->len, str: name->name);
1515}
1516
1517static inline void encode_claim_fh(struct xdr_stream *xdr)
1518{
1519 __be32 *p;
1520
1521 p = reserve_space(xdr, nbytes: 4);
1522 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1523}
1524
1525static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1526{
1527 __be32 *p;
1528
1529 p = reserve_space(xdr, nbytes: 4);
1530 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1531 encode_nfs4_stateid(xdr, stateid);
1532}
1533
1534static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1535{
1536 encode_op_hdr(xdr, op: OP_OPEN, decode_open_maxsz, hdr);
1537 encode_openhdr(xdr, arg);
1538 encode_opentype(xdr, arg);
1539 switch (arg->claim) {
1540 case NFS4_OPEN_CLAIM_NULL:
1541 encode_claim_null(xdr, name: arg->name);
1542 break;
1543 case NFS4_OPEN_CLAIM_PREVIOUS:
1544 encode_claim_previous(xdr, type: arg->u.delegation_type);
1545 break;
1546 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1547 encode_claim_delegate_cur(xdr, name: arg->name, stateid: &arg->u.delegation);
1548 break;
1549 case NFS4_OPEN_CLAIM_FH:
1550 encode_claim_fh(xdr);
1551 break;
1552 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1553 encode_claim_delegate_cur_fh(xdr, stateid: &arg->u.delegation);
1554 break;
1555 default:
1556 BUG();
1557 }
1558}
1559
1560static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1561{
1562 encode_op_hdr(xdr, op: OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1563 encode_nfs4_stateid(xdr, stateid: arg->stateid);
1564 encode_nfs4_seqid(xdr, seqid: arg->seqid);
1565}
1566
1567static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1568{
1569 encode_op_hdr(xdr, op: OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1570 encode_nfs4_stateid(xdr, stateid: &arg->stateid);
1571 encode_nfs4_seqid(xdr, seqid: arg->seqid);
1572 encode_share_access(xdr, share_access: arg->share_access);
1573}
1574
1575static void
1576encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1577{
1578 encode_op_hdr(xdr, op: OP_PUTFH, decode_putfh_maxsz, hdr);
1579 encode_string(xdr, len: fh->size, str: fh->data);
1580}
1581
1582static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1583{
1584 encode_op_hdr(xdr, op: OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1585}
1586
1587static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1588 struct compound_hdr *hdr)
1589{
1590 __be32 *p;
1591
1592 encode_op_hdr(xdr, op: OP_READ, decode_read_maxsz, hdr);
1593 encode_nfs4_stateid(xdr, stateid: &args->stateid);
1594
1595 p = reserve_space(xdr, nbytes: 12);
1596 p = xdr_encode_hyper(p, val: args->offset);
1597 *p = cpu_to_be32(args->count);
1598}
1599
1600static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1601{
1602 uint32_t attrs[3] = {
1603 FATTR4_WORD0_TYPE
1604 | FATTR4_WORD0_RDATTR_ERROR,
1605 FATTR4_WORD1_MOUNTED_ON_FILEID,
1606 };
1607 uint32_t dircount = readdir->count;
1608 uint32_t maxcount = readdir->count;
1609 __be32 *p, verf[2];
1610 uint32_t attrlen = 0;
1611 unsigned int i;
1612
1613 if (readdir->plus) {
1614 attrs[0] |= FATTR4_WORD0_CHANGE
1615 | FATTR4_WORD0_SIZE
1616 | FATTR4_WORD0_FSID
1617 | FATTR4_WORD0_FILEHANDLE
1618 | FATTR4_WORD0_FILEID;
1619 attrs[1] |= FATTR4_WORD1_MODE
1620 | FATTR4_WORD1_NUMLINKS
1621 | FATTR4_WORD1_OWNER
1622 | FATTR4_WORD1_OWNER_GROUP
1623 | FATTR4_WORD1_RAWDEV
1624 | FATTR4_WORD1_SPACE_USED
1625 | FATTR4_WORD1_TIME_ACCESS
1626 | FATTR4_WORD1_TIME_CREATE
1627 | FATTR4_WORD1_TIME_METADATA
1628 | FATTR4_WORD1_TIME_MODIFY;
1629 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1630 }
1631 /* Use mounted_on_fileid only if the server supports it */
1632 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1633 attrs[0] |= FATTR4_WORD0_FILEID;
1634 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1635 attrs[i] &= readdir->bitmask[i];
1636 if (attrs[i] != 0)
1637 attrlen = i+1;
1638 }
1639
1640 encode_op_hdr(xdr, op: OP_READDIR, decode_readdir_maxsz, hdr);
1641 encode_uint64(xdr, n: readdir->cookie);
1642 encode_nfs4_verifier(xdr, verf: &readdir->verifier);
1643 p = reserve_space(xdr, nbytes: 12 + (attrlen << 2));
1644 *p++ = cpu_to_be32(dircount);
1645 *p++ = cpu_to_be32(maxcount);
1646 *p++ = cpu_to_be32(attrlen);
1647 for (i = 0; i < attrlen; i++)
1648 *p++ = cpu_to_be32(attrs[i]);
1649 memcpy(to: verf, from: readdir->verifier.data, len: sizeof(verf));
1650
1651 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1652 __func__,
1653 (unsigned long long)readdir->cookie,
1654 verf[0], verf[1],
1655 attrs[0] & readdir->bitmask[0],
1656 attrs[1] & readdir->bitmask[1],
1657 attrs[2] & readdir->bitmask[2]);
1658}
1659
1660static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1661{
1662 encode_op_hdr(xdr, op: OP_READLINK, decode_readlink_maxsz, hdr);
1663}
1664
1665static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1666{
1667 encode_op_hdr(xdr, op: OP_REMOVE, decode_remove_maxsz, hdr);
1668 encode_string(xdr, len: name->len, str: name->name);
1669}
1670
1671static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1672{
1673 encode_op_hdr(xdr, op: OP_RENAME, decode_rename_maxsz, hdr);
1674 encode_string(xdr, len: oldname->len, str: oldname->name);
1675 encode_string(xdr, len: newname->len, str: newname->name);
1676}
1677
1678static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1679 struct compound_hdr *hdr)
1680{
1681 encode_op_hdr(xdr, op: OP_RENEW, decode_renew_maxsz, hdr);
1682 encode_uint64(xdr, n: clid);
1683}
1684
1685static void
1686encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1687{
1688 encode_op_hdr(xdr, op: OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1689}
1690
1691static void nfs4_acltype_to_bitmap(enum nfs4_acl_type type, __u32 bitmap[2])
1692{
1693 switch (type) {
1694 default:
1695 bitmap[0] = FATTR4_WORD0_ACL;
1696 bitmap[1] = 0;
1697 break;
1698 case NFS4ACL_DACL:
1699 bitmap[0] = 0;
1700 bitmap[1] = FATTR4_WORD1_DACL;
1701 break;
1702 case NFS4ACL_SACL:
1703 bitmap[0] = 0;
1704 bitmap[1] = FATTR4_WORD1_SACL;
1705 }
1706}
1707
1708static void encode_setacl(struct xdr_stream *xdr,
1709 const struct nfs_setaclargs *arg,
1710 struct compound_hdr *hdr)
1711{
1712 __u32 bitmap[2];
1713
1714 nfs4_acltype_to_bitmap(type: arg->acl_type, bitmap);
1715
1716 encode_op_hdr(xdr, op: OP_SETATTR, decode_setacl_maxsz, hdr);
1717 encode_nfs4_stateid(xdr, stateid: &zero_stateid);
1718 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap));
1719 encode_uint32(xdr, n: arg->acl_len);
1720 xdr_write_pages(xdr, pages: arg->acl_pages, base: 0, len: arg->acl_len);
1721}
1722
1723static void
1724encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1725{
1726 encode_op_hdr(xdr, op: OP_SAVEFH, decode_savefh_maxsz, hdr);
1727}
1728
1729static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1730{
1731 encode_op_hdr(xdr, op: OP_SETATTR, decode_setattr_maxsz, hdr);
1732 encode_nfs4_stateid(xdr, stateid: &arg->stateid);
1733 encode_attrs(xdr, iap: arg->iap, label: arg->label, NULL, server,
1734 attrmask: server->attr_bitmask);
1735}
1736
1737static void encode_delegattr(struct xdr_stream *xdr,
1738 const nfs4_stateid *stateid,
1739 const struct nfs4_delegattr *attr,
1740 struct compound_hdr *hdr)
1741{
1742 uint32_t bitmap[3] = { 0 };
1743 uint32_t len = 0;
1744 __be32 *p;
1745
1746 encode_op_hdr(xdr, op: OP_SETATTR, encode_delegattr_maxsz, hdr);
1747 encode_nfs4_stateid(xdr, stateid);
1748 if (attr->atime_set) {
1749 bitmap[2] |= FATTR4_WORD2_TIME_DELEG_ACCESS;
1750 len += (nfstime4_maxsz << 2);
1751 }
1752 if (attr->mtime_set) {
1753 bitmap[2] |= FATTR4_WORD2_TIME_DELEG_MODIFY;
1754 len += (nfstime4_maxsz << 2);
1755 }
1756 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap));
1757 xdr_stream_encode_opaque_inline(xdr, ptr: (void **)&p, len);
1758 if (bitmap[2] & FATTR4_WORD2_TIME_DELEG_ACCESS)
1759 p = xdr_encode_nfstime4(p, t: &attr->atime);
1760 if (bitmap[2] & FATTR4_WORD2_TIME_DELEG_MODIFY)
1761 p = xdr_encode_nfstime4(p, t: &attr->mtime);
1762}
1763
1764static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1765{
1766 __be32 *p;
1767
1768 encode_op_hdr(xdr, op: OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1769 encode_nfs4_verifier(xdr, verf: setclientid->sc_verifier);
1770
1771 encode_string(xdr, len: strlen(setclientid->sc_clnt->cl_owner_id),
1772 str: setclientid->sc_clnt->cl_owner_id);
1773 p = reserve_space(xdr, nbytes: 4);
1774 *p = cpu_to_be32(setclientid->sc_prog);
1775 encode_string(xdr, len: setclientid->sc_netid_len, str: setclientid->sc_netid);
1776 encode_string(xdr, len: setclientid->sc_uaddr_len, str: setclientid->sc_uaddr);
1777 p = reserve_space(xdr, nbytes: 4);
1778 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1779}
1780
1781static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1782{
1783 encode_op_hdr(xdr, op: OP_SETCLIENTID_CONFIRM,
1784 decode_setclientid_confirm_maxsz, hdr);
1785 encode_uint64(xdr, n: arg->clientid);
1786 encode_nfs4_verifier(xdr, verf: &arg->confirm);
1787}
1788
1789static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1790 struct compound_hdr *hdr)
1791{
1792 __be32 *p;
1793
1794 encode_op_hdr(xdr, op: OP_WRITE, decode_write_maxsz, hdr);
1795 encode_nfs4_stateid(xdr, stateid: &args->stateid);
1796
1797 p = reserve_space(xdr, nbytes: 16);
1798 p = xdr_encode_hyper(p, val: args->offset);
1799 *p++ = cpu_to_be32(args->stable);
1800 *p = cpu_to_be32(args->count);
1801
1802 xdr_write_pages(xdr, pages: args->pages, base: args->pgbase, len: args->count);
1803}
1804
1805static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1806{
1807 encode_op_hdr(xdr, op: OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1808 encode_nfs4_stateid(xdr, stateid);
1809}
1810
1811static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1812{
1813 encode_op_hdr(xdr, op: OP_SECINFO, decode_secinfo_maxsz, hdr);
1814 encode_string(xdr, len: name->len, str: name->name);
1815}
1816
1817#if defined(CONFIG_NFS_V4_1)
1818/* NFSv4.1 operations */
1819static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1820 const struct nfs41_bind_conn_to_session_args *args,
1821 struct compound_hdr *hdr)
1822{
1823 __be32 *p;
1824
1825 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1826 decode_bind_conn_to_session_maxsz, hdr);
1827 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1828 p = xdr_reserve_space(xdr, 8);
1829 *p++ = cpu_to_be32(args->dir);
1830 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1831}
1832
1833static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map)
1834{
1835 unsigned int i;
1836 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1837 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1838 encode_uint32(xdr, op_map->u.words[i]);
1839}
1840
1841static void encode_exchange_id(struct xdr_stream *xdr,
1842 const struct nfs41_exchange_id_args *args,
1843 struct compound_hdr *hdr)
1844{
1845 __be32 *p;
1846 char impl_name[IMPL_NAME_LIMIT];
1847 int len = 0;
1848
1849 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1850 encode_nfs4_verifier(xdr, &args->verifier);
1851
1852 encode_string(xdr, strlen(args->client->cl_owner_id),
1853 args->client->cl_owner_id);
1854
1855 encode_uint32(xdr, args->flags);
1856 encode_uint32(xdr, args->state_protect.how);
1857
1858 switch (args->state_protect.how) {
1859 case SP4_NONE:
1860 break;
1861 case SP4_MACH_CRED:
1862 encode_op_map(xdr, &args->state_protect.enforce);
1863 encode_op_map(xdr, &args->state_protect.allow);
1864 break;
1865 default:
1866 WARN_ON_ONCE(1);
1867 break;
1868 }
1869
1870 if (send_implementation_id &&
1871 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1872 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1873 <= sizeof(impl_name) + 1)
1874 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1875 utsname()->sysname, utsname()->release,
1876 utsname()->version, utsname()->machine);
1877
1878 if (len > 0) {
1879 encode_uint32(xdr, 1); /* implementation id array length=1 */
1880
1881 encode_string(xdr,
1882 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1883 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1884 encode_string(xdr, len, impl_name);
1885 /* just send zeros for nii_date - the date is in nii_name */
1886 p = reserve_space(xdr, 12);
1887 p = xdr_encode_hyper(p, 0);
1888 *p = cpu_to_be32(0);
1889 } else
1890 encode_uint32(xdr, 0); /* implementation id array length=0 */
1891}
1892
1893static void encode_create_session(struct xdr_stream *xdr,
1894 const struct nfs41_create_session_args *args,
1895 struct compound_hdr *hdr)
1896{
1897 __be32 *p;
1898 struct nfs_client *clp = args->client;
1899 struct rpc_clnt *clnt = clp->cl_rpcclient;
1900 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1901 u32 max_resp_sz_cached;
1902
1903 /*
1904 * Assumes OPEN is the biggest non-idempotent compound.
1905 * 2 is the verifier.
1906 */
1907 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2)
1908 * XDR_UNIT + RPC_MAX_AUTH_SIZE;
1909
1910 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1911 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1912 p = xdr_encode_hyper(p, args->clientid);
1913 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1914 *p++ = cpu_to_be32(args->flags); /*flags */
1915
1916 /* Fore Channel */
1917 *p++ = cpu_to_be32(0); /* header padding size */
1918 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1919 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1920 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1921 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1922 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1923 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1924
1925 /* Back Channel */
1926 *p++ = cpu_to_be32(0); /* header padding size */
1927 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1928 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1929 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1930 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1931 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1932 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1933
1934 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1935 *p++ = cpu_to_be32(1);
1936 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1937
1938 /* authsys_parms rfc1831 */
1939 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1940 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1941 *p++ = cpu_to_be32(0); /* UID */
1942 *p++ = cpu_to_be32(0); /* GID */
1943 *p = cpu_to_be32(0); /* No more gids */
1944}
1945
1946static void encode_destroy_session(struct xdr_stream *xdr,
1947 const struct nfs4_session *session,
1948 struct compound_hdr *hdr)
1949{
1950 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1951 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1952}
1953
1954static void encode_destroy_clientid(struct xdr_stream *xdr,
1955 uint64_t clientid,
1956 struct compound_hdr *hdr)
1957{
1958 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1959 encode_uint64(xdr, clientid);
1960}
1961
1962static void encode_reclaim_complete(struct xdr_stream *xdr,
1963 const struct nfs41_reclaim_complete_args *args,
1964 struct compound_hdr *hdr)
1965{
1966 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1967 encode_uint32(xdr, args->one_fs);
1968}
1969#endif /* CONFIG_NFS_V4_1 */
1970
1971static void encode_sequence(struct xdr_stream *xdr,
1972 const struct nfs4_sequence_args *args,
1973 struct compound_hdr *hdr)
1974{
1975#if defined(CONFIG_NFS_V4_1)
1976 struct nfs4_session *session;
1977 struct nfs4_slot_table *tp;
1978 struct nfs4_slot *slot = args->sa_slot;
1979 __be32 *p;
1980
1981 tp = slot->table;
1982 session = tp->session;
1983 if (!session)
1984 return;
1985
1986 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1987
1988 /*
1989 * Sessionid + seqid + slotid + max slotid + cache_this
1990 */
1991 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1992 "max_slotid=%d cache_this=%d\n",
1993 __func__,
1994 ((u32 *)session->sess_id.data)[0],
1995 ((u32 *)session->sess_id.data)[1],
1996 ((u32 *)session->sess_id.data)[2],
1997 ((u32 *)session->sess_id.data)[3],
1998 slot->seq_nr, slot->slot_nr,
1999 tp->highest_used_slotid, args->sa_cache_this);
2000 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
2001 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
2002 *p++ = cpu_to_be32(slot->seq_nr);
2003 *p++ = cpu_to_be32(slot->slot_nr);
2004 *p++ = cpu_to_be32(tp->highest_used_slotid);
2005 *p = cpu_to_be32(args->sa_cache_this);
2006#endif /* CONFIG_NFS_V4_1 */
2007}
2008
2009#ifdef CONFIG_NFS_V4_1
2010static void
2011encode_getdeviceinfo(struct xdr_stream *xdr,
2012 const struct nfs4_getdeviceinfo_args *args,
2013 struct compound_hdr *hdr)
2014{
2015 __be32 *p;
2016
2017 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
2018 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
2019 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
2020 NFS4_DEVICEID4_SIZE);
2021 *p++ = cpu_to_be32(args->pdev->layout_type);
2022 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
2023
2024 p = reserve_space(xdr, 4 + 4);
2025 *p++ = cpu_to_be32(1); /* bitmap length */
2026 *p++ = cpu_to_be32(args->notify_types);
2027}
2028
2029static void
2030encode_layoutget(struct xdr_stream *xdr,
2031 const struct nfs4_layoutget_args *args,
2032 struct compound_hdr *hdr)
2033{
2034 __be32 *p;
2035
2036 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
2037 p = reserve_space(xdr, 36);
2038 *p++ = cpu_to_be32(0); /* Signal layout available */
2039 *p++ = cpu_to_be32(args->type);
2040 *p++ = cpu_to_be32(args->range.iomode);
2041 p = xdr_encode_hyper(p, args->range.offset);
2042 p = xdr_encode_hyper(p, args->range.length);
2043 p = xdr_encode_hyper(p, args->minlength);
2044 encode_nfs4_stateid(xdr, &args->stateid);
2045 encode_uint32(xdr, args->maxcount);
2046
2047 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
2048 __func__,
2049 args->type,
2050 args->range.iomode,
2051 (unsigned long)args->range.offset,
2052 (unsigned long)args->range.length,
2053 args->maxcount);
2054}
2055
2056static int
2057encode_layoutcommit(struct xdr_stream *xdr,
2058 struct inode *inode,
2059 const struct nfs4_layoutcommit_args *args,
2060 struct compound_hdr *hdr)
2061{
2062 __be32 *p;
2063
2064 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
2065 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
2066
2067 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
2068 p = reserve_space(xdr, 20);
2069 /* Only whole file layouts */
2070 p = xdr_encode_hyper(p, 0); /* offset */
2071 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
2072 *p = cpu_to_be32(0); /* reclaim */
2073 encode_nfs4_stateid(xdr, &args->stateid);
2074 if (args->lastbytewritten != U64_MAX) {
2075 p = reserve_space(xdr, 20);
2076 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
2077 p = xdr_encode_hyper(p, args->lastbytewritten);
2078 } else {
2079 p = reserve_space(xdr, 12);
2080 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2081 }
2082 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2083 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2084
2085 encode_uint32(xdr, args->layoutupdate_len);
2086 if (args->layoutupdate_pages)
2087 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2088 args->layoutupdate_len);
2089
2090 return 0;
2091}
2092
2093static void
2094encode_layoutreturn(struct xdr_stream *xdr,
2095 const struct nfs4_layoutreturn_args *args,
2096 struct compound_hdr *hdr)
2097{
2098 __be32 *p;
2099
2100 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2101 p = reserve_space(xdr, 16);
2102 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2103 *p++ = cpu_to_be32(args->layout_type);
2104 *p++ = cpu_to_be32(args->range.iomode);
2105 *p = cpu_to_be32(RETURN_FILE);
2106 p = reserve_space(xdr, 16);
2107 p = xdr_encode_hyper(p, args->range.offset);
2108 p = xdr_encode_hyper(p, args->range.length);
2109 spin_lock(&args->inode->i_lock);
2110 encode_nfs4_stateid(xdr, &args->stateid);
2111 spin_unlock(&args->inode->i_lock);
2112 if (args->ld_private->ops && args->ld_private->ops->encode)
2113 args->ld_private->ops->encode(xdr, args, args->ld_private);
2114 else
2115 encode_uint32(xdr, 0);
2116}
2117
2118static int
2119encode_secinfo_no_name(struct xdr_stream *xdr,
2120 const struct nfs41_secinfo_no_name_args *args,
2121 struct compound_hdr *hdr)
2122{
2123 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2124 encode_uint32(xdr, args->style);
2125 return 0;
2126}
2127
2128static void encode_test_stateid(struct xdr_stream *xdr,
2129 const struct nfs41_test_stateid_args *args,
2130 struct compound_hdr *hdr)
2131{
2132 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2133 encode_uint32(xdr, 1);
2134 encode_nfs4_stateid(xdr, &args->stateid);
2135}
2136
2137static void encode_free_stateid(struct xdr_stream *xdr,
2138 const struct nfs41_free_stateid_args *args,
2139 struct compound_hdr *hdr)
2140{
2141 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2142 encode_nfs4_stateid(xdr, &args->stateid);
2143}
2144#else
2145static inline void
2146encode_layoutreturn(struct xdr_stream *xdr,
2147 const struct nfs4_layoutreturn_args *args,
2148 struct compound_hdr *hdr)
2149{
2150}
2151
2152static void
2153encode_layoutget(struct xdr_stream *xdr,
2154 const struct nfs4_layoutget_args *args,
2155 struct compound_hdr *hdr)
2156{
2157}
2158#endif /* CONFIG_NFS_V4_1 */
2159
2160/*
2161 * END OF "GENERIC" ENCODE ROUTINES.
2162 */
2163
2164static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2165{
2166#if defined(CONFIG_NFS_V4_1)
2167 struct nfs4_session *session = args->sa_slot->table->session;
2168 if (session)
2169 return session->clp->cl_mvops->minor_version;
2170#endif /* CONFIG_NFS_V4_1 */
2171 return 0;
2172}
2173
2174/*
2175 * Encode an ACCESS request
2176 */
2177static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2178 const void *data)
2179{
2180 const struct nfs4_accessargs *args = data;
2181 struct compound_hdr hdr = {
2182 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2183 };
2184
2185 encode_compound_hdr(xdr, req, hdr: &hdr);
2186 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2187 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2188 encode_access(xdr, access: args->access, hdr: &hdr);
2189 if (args->bitmask)
2190 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2191 encode_nops(hdr: &hdr);
2192}
2193
2194/*
2195 * Encode LOOKUP request
2196 */
2197static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2198 const void *data)
2199{
2200 const struct nfs4_lookup_arg *args = data;
2201 struct compound_hdr hdr = {
2202 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2203 };
2204
2205 encode_compound_hdr(xdr, req, hdr: &hdr);
2206 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2207 encode_putfh(xdr, fh: args->dir_fh, hdr: &hdr);
2208 encode_lookup(xdr, name: args->name, hdr: &hdr);
2209 encode_getfh(xdr, hdr: &hdr);
2210 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2211 encode_nops(hdr: &hdr);
2212}
2213
2214/*
2215 * Encode LOOKUPP request
2216 */
2217static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr,
2218 const void *data)
2219{
2220 const struct nfs4_lookupp_arg *args = data;
2221 struct compound_hdr hdr = {
2222 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2223 };
2224
2225 encode_compound_hdr(xdr, req, hdr: &hdr);
2226 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2227 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2228 encode_lookupp(xdr, hdr: &hdr);
2229 encode_getfh(xdr, hdr: &hdr);
2230 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2231 encode_nops(hdr: &hdr);
2232}
2233
2234/*
2235 * Encode LOOKUP_ROOT request
2236 */
2237static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2238 struct xdr_stream *xdr,
2239 const void *data)
2240{
2241 const struct nfs4_lookup_root_arg *args = data;
2242 struct compound_hdr hdr = {
2243 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2244 };
2245
2246 encode_compound_hdr(xdr, req, hdr: &hdr);
2247 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2248 encode_putrootfh(xdr, hdr: &hdr);
2249 encode_getfh(xdr, hdr: &hdr);
2250 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2251 encode_nops(hdr: &hdr);
2252}
2253
2254/*
2255 * Encode REMOVE request
2256 */
2257static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2258 const void *data)
2259{
2260 const struct nfs_removeargs *args = data;
2261 struct compound_hdr hdr = {
2262 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2263 };
2264
2265 encode_compound_hdr(xdr, req, hdr: &hdr);
2266 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2267 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2268 encode_remove(xdr, name: &args->name, hdr: &hdr);
2269 encode_nops(hdr: &hdr);
2270}
2271
2272/*
2273 * Encode RENAME request
2274 */
2275static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2276 const void *data)
2277{
2278 const struct nfs_renameargs *args = data;
2279 struct compound_hdr hdr = {
2280 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2281 };
2282
2283 encode_compound_hdr(xdr, req, hdr: &hdr);
2284 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2285 encode_putfh(xdr, fh: args->old_dir, hdr: &hdr);
2286 encode_savefh(xdr, hdr: &hdr);
2287 encode_putfh(xdr, fh: args->new_dir, hdr: &hdr);
2288 encode_rename(xdr, oldname: args->old_name, newname: args->new_name, hdr: &hdr);
2289 encode_nops(hdr: &hdr);
2290}
2291
2292/*
2293 * Encode LINK request
2294 */
2295static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2296 const void *data)
2297{
2298 const struct nfs4_link_arg *args = data;
2299 struct compound_hdr hdr = {
2300 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2301 };
2302
2303 encode_compound_hdr(xdr, req, hdr: &hdr);
2304 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2305 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2306 encode_savefh(xdr, hdr: &hdr);
2307 encode_putfh(xdr, fh: args->dir_fh, hdr: &hdr);
2308 encode_link(xdr, name: args->name, hdr: &hdr);
2309 encode_restorefh(xdr, hdr: &hdr);
2310 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2311 encode_nops(hdr: &hdr);
2312}
2313
2314/*
2315 * Encode CREATE request
2316 */
2317static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2318 const void *data)
2319{
2320 const struct nfs4_create_arg *args = data;
2321 struct compound_hdr hdr = {
2322 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2323 };
2324
2325 encode_compound_hdr(xdr, req, hdr: &hdr);
2326 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2327 encode_putfh(xdr, fh: args->dir_fh, hdr: &hdr);
2328 encode_create(xdr, create: args, hdr: &hdr);
2329 encode_getfh(xdr, hdr: &hdr);
2330 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2331 encode_nops(hdr: &hdr);
2332}
2333
2334/*
2335 * Encode SYMLINK request
2336 */
2337static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2338 const void *data)
2339{
2340 const struct nfs4_create_arg *args = data;
2341
2342 nfs4_xdr_enc_create(req, xdr, data: args);
2343}
2344
2345/*
2346 * Encode GETATTR request
2347 */
2348static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2349 const void *data)
2350{
2351 const struct nfs4_getattr_arg *args = data;
2352 struct compound_hdr hdr = {
2353 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2354 };
2355
2356 encode_compound_hdr(xdr, req, hdr: &hdr);
2357 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2358 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2359 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2360 encode_nops(hdr: &hdr);
2361}
2362
2363/*
2364 * Encode a CLOSE request
2365 */
2366static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2367 const void *data)
2368{
2369 const struct nfs_closeargs *args = data;
2370 struct compound_hdr hdr = {
2371 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2372 };
2373
2374 encode_compound_hdr(xdr, req, hdr: &hdr);
2375 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2376 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2377 if (args->lr_args)
2378 encode_layoutreturn(xdr, args: args->lr_args, hdr: &hdr);
2379 if (args->bitmask != NULL)
2380 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2381 encode_close(xdr, arg: args, hdr: &hdr);
2382 encode_nops(hdr: &hdr);
2383}
2384
2385/*
2386 * Encode an OPEN request
2387 */
2388static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2389 const void *data)
2390{
2391 const struct nfs_openargs *args = data;
2392 struct compound_hdr hdr = {
2393 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2394 };
2395
2396 encode_compound_hdr(xdr, req, hdr: &hdr);
2397 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2398 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2399 encode_open(xdr, arg: args, hdr: &hdr);
2400 encode_getfh(xdr, hdr: &hdr);
2401 if (args->access)
2402 encode_access(xdr, access: args->access, hdr: &hdr);
2403 encode_getfattr_open(xdr, bitmask: args->bitmask, open_bitmap: args->open_bitmap, hdr: &hdr);
2404 if (args->lg_args) {
2405 encode_layoutget(xdr, args: args->lg_args, hdr: &hdr);
2406 rpc_prepare_reply_pages(req, pages: args->lg_args->layout.pages, base: 0,
2407 len: args->lg_args->layout.pglen,
2408 hdrsize: hdr.replen - pagepad_maxsz);
2409 }
2410 encode_nops(hdr: &hdr);
2411}
2412
2413/*
2414 * Encode an OPEN_CONFIRM request
2415 */
2416static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2417 struct xdr_stream *xdr,
2418 const void *data)
2419{
2420 const struct nfs_open_confirmargs *args = data;
2421 struct compound_hdr hdr = {
2422 .nops = 0,
2423 };
2424
2425 encode_compound_hdr(xdr, req, hdr: &hdr);
2426 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2427 encode_open_confirm(xdr, arg: args, hdr: &hdr);
2428 encode_nops(hdr: &hdr);
2429}
2430
2431/*
2432 * Encode an OPEN request with no attributes.
2433 */
2434static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2435 struct xdr_stream *xdr,
2436 const void *data)
2437{
2438 const struct nfs_openargs *args = data;
2439 struct compound_hdr hdr = {
2440 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2441 };
2442
2443 encode_compound_hdr(xdr, req, hdr: &hdr);
2444 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2445 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2446 encode_open(xdr, arg: args, hdr: &hdr);
2447 if (args->access)
2448 encode_access(xdr, access: args->access, hdr: &hdr);
2449 encode_getfattr_open(xdr, bitmask: args->bitmask, open_bitmap: args->open_bitmap, hdr: &hdr);
2450 if (args->lg_args) {
2451 encode_layoutget(xdr, args: args->lg_args, hdr: &hdr);
2452 rpc_prepare_reply_pages(req, pages: args->lg_args->layout.pages, base: 0,
2453 len: args->lg_args->layout.pglen,
2454 hdrsize: hdr.replen - pagepad_maxsz);
2455 }
2456 encode_nops(hdr: &hdr);
2457}
2458
2459/*
2460 * Encode an OPEN_DOWNGRADE request
2461 */
2462static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2463 struct xdr_stream *xdr,
2464 const void *data)
2465{
2466 const struct nfs_closeargs *args = data;
2467 struct compound_hdr hdr = {
2468 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2469 };
2470
2471 encode_compound_hdr(xdr, req, hdr: &hdr);
2472 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2473 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2474 if (args->lr_args)
2475 encode_layoutreturn(xdr, args: args->lr_args, hdr: &hdr);
2476 encode_open_downgrade(xdr, arg: args, hdr: &hdr);
2477 encode_nops(hdr: &hdr);
2478}
2479
2480/*
2481 * Encode a LOCK request
2482 */
2483static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2484 const void *data)
2485{
2486 const struct nfs_lock_args *args = data;
2487 struct compound_hdr hdr = {
2488 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2489 };
2490
2491 encode_compound_hdr(xdr, req, hdr: &hdr);
2492 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2493 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2494 encode_lock(xdr, args, hdr: &hdr);
2495 encode_nops(hdr: &hdr);
2496}
2497
2498/*
2499 * Encode a LOCKT request
2500 */
2501static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2502 const void *data)
2503{
2504 const struct nfs_lockt_args *args = data;
2505 struct compound_hdr hdr = {
2506 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2507 };
2508
2509 encode_compound_hdr(xdr, req, hdr: &hdr);
2510 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2511 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2512 encode_lockt(xdr, args, hdr: &hdr);
2513 encode_nops(hdr: &hdr);
2514}
2515
2516/*
2517 * Encode a LOCKU request
2518 */
2519static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2520 const void *data)
2521{
2522 const struct nfs_locku_args *args = data;
2523 struct compound_hdr hdr = {
2524 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2525 };
2526
2527 encode_compound_hdr(xdr, req, hdr: &hdr);
2528 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2529 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2530 encode_locku(xdr, args, hdr: &hdr);
2531 encode_nops(hdr: &hdr);
2532}
2533
2534static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2535 struct xdr_stream *xdr,
2536 const void *data)
2537{
2538 const struct nfs_release_lockowner_args *args = data;
2539 struct compound_hdr hdr = {
2540 .minorversion = 0,
2541 };
2542
2543 encode_compound_hdr(xdr, req, hdr: &hdr);
2544 encode_release_lockowner(xdr, lowner: &args->lock_owner, hdr: &hdr);
2545 encode_nops(hdr: &hdr);
2546}
2547
2548/*
2549 * Encode a READLINK request
2550 */
2551static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2552 const void *data)
2553{
2554 const struct nfs4_readlink *args = data;
2555 struct compound_hdr hdr = {
2556 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2557 };
2558
2559 encode_compound_hdr(xdr, req, hdr: &hdr);
2560 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2561 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2562 encode_readlink(xdr, readlink: args, req, hdr: &hdr);
2563
2564 rpc_prepare_reply_pages(req, pages: args->pages, base: args->pgbase,
2565 len: args->pglen, hdrsize: hdr.replen - pagepad_maxsz);
2566 encode_nops(hdr: &hdr);
2567}
2568
2569/*
2570 * Encode a READDIR request
2571 */
2572static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2573 const void *data)
2574{
2575 const struct nfs4_readdir_arg *args = data;
2576 struct compound_hdr hdr = {
2577 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2578 };
2579
2580 encode_compound_hdr(xdr, req, hdr: &hdr);
2581 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2582 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2583 encode_readdir(xdr, readdir: args, req, hdr: &hdr);
2584
2585 rpc_prepare_reply_pages(req, pages: args->pages, base: args->pgbase,
2586 len: args->count, hdrsize: hdr.replen - pagepad_maxsz);
2587 encode_nops(hdr: &hdr);
2588}
2589
2590/*
2591 * Encode a READ request
2592 */
2593static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2594 const void *data)
2595{
2596 const struct nfs_pgio_args *args = data;
2597 struct compound_hdr hdr = {
2598 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2599 };
2600
2601 encode_compound_hdr(xdr, req, hdr: &hdr);
2602 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2603 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2604 encode_read(xdr, args, hdr: &hdr);
2605
2606 rpc_prepare_reply_pages(req, pages: args->pages, base: args->pgbase,
2607 len: args->count, hdrsize: hdr.replen - pagepad_maxsz);
2608 req->rq_rcv_buf.flags |= XDRBUF_READ;
2609 encode_nops(hdr: &hdr);
2610}
2611
2612/*
2613 * Encode an SETATTR request
2614 */
2615static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2616 const void *data)
2617{
2618 const struct nfs_setattrargs *args = data;
2619 struct compound_hdr hdr = {
2620 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2621 };
2622
2623 encode_compound_hdr(xdr, req, hdr: &hdr);
2624 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2625 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2626 encode_setattr(xdr, arg: args, server: args->server, hdr: &hdr);
2627 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2628 encode_nops(hdr: &hdr);
2629}
2630
2631/*
2632 * Encode a GETACL request
2633 */
2634static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2635 const void *data)
2636{
2637 const struct nfs_getaclargs *args = data;
2638 struct compound_hdr hdr = {
2639 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2640 };
2641 __u32 nfs4_acl_bitmap[2];
2642 uint32_t replen;
2643
2644 nfs4_acltype_to_bitmap(type: args->acl_type, bitmap: nfs4_acl_bitmap);
2645
2646 encode_compound_hdr(xdr, req, hdr: &hdr);
2647 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2648 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2649 replen = hdr.replen + op_decode_hdr_maxsz;
2650 encode_getattr(xdr, bitmap: nfs4_acl_bitmap, NULL,
2651 ARRAY_SIZE(nfs4_acl_bitmap), hdr: &hdr);
2652
2653 rpc_prepare_reply_pages(req, pages: args->acl_pages, base: 0,
2654 len: args->acl_len, hdrsize: replen);
2655 encode_nops(hdr: &hdr);
2656}
2657
2658/*
2659 * Encode a WRITE request
2660 */
2661static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2662 const void *data)
2663{
2664 const struct nfs_pgio_args *args = data;
2665 struct compound_hdr hdr = {
2666 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2667 };
2668
2669 encode_compound_hdr(xdr, req, hdr: &hdr);
2670 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2671 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2672 encode_write(xdr, args, hdr: &hdr);
2673 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2674 if (args->bitmask)
2675 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2676 encode_nops(hdr: &hdr);
2677}
2678
2679/*
2680 * a COMMIT request
2681 */
2682static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2683 const void *data)
2684{
2685 const struct nfs_commitargs *args = data;
2686 struct compound_hdr hdr = {
2687 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2688 };
2689
2690 encode_compound_hdr(xdr, req, hdr: &hdr);
2691 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2692 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2693 encode_commit(xdr, args, hdr: &hdr);
2694 encode_nops(hdr: &hdr);
2695}
2696
2697/*
2698 * FSINFO request
2699 */
2700static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2701 const void *data)
2702{
2703 const struct nfs4_fsinfo_arg *args = data;
2704 struct compound_hdr hdr = {
2705 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2706 };
2707
2708 encode_compound_hdr(xdr, req, hdr: &hdr);
2709 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2710 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2711 encode_fsinfo(xdr, bitmask: args->bitmask, hdr: &hdr);
2712 encode_nops(hdr: &hdr);
2713}
2714
2715/*
2716 * a PATHCONF request
2717 */
2718static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2719 const void *data)
2720{
2721 const struct nfs4_pathconf_arg *args = data;
2722 struct compound_hdr hdr = {
2723 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2724 };
2725
2726 encode_compound_hdr(xdr, req, hdr: &hdr);
2727 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2728 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2729 encode_getattr(xdr, bitmap: nfs4_pathconf_bitmap, mask: args->bitmask,
2730 ARRAY_SIZE(nfs4_pathconf_bitmap), hdr: &hdr);
2731 encode_nops(hdr: &hdr);
2732}
2733
2734/*
2735 * a STATFS request
2736 */
2737static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2738 const void *data)
2739{
2740 const struct nfs4_statfs_arg *args = data;
2741 struct compound_hdr hdr = {
2742 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2743 };
2744
2745 encode_compound_hdr(xdr, req, hdr: &hdr);
2746 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2747 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2748 encode_getattr(xdr, bitmap: nfs4_statfs_bitmap, mask: args->bitmask,
2749 ARRAY_SIZE(nfs4_statfs_bitmap), hdr: &hdr);
2750 encode_nops(hdr: &hdr);
2751}
2752
2753/*
2754 * GETATTR_BITMAP request
2755 */
2756static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2757 struct xdr_stream *xdr,
2758 const void *data)
2759{
2760 const struct nfs4_server_caps_arg *args = data;
2761 const u32 *bitmask = args->bitmask;
2762 struct compound_hdr hdr = {
2763 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2764 };
2765
2766 encode_compound_hdr(xdr, req, hdr: &hdr);
2767 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2768 encode_putfh(xdr, fh: args->fhandle, hdr: &hdr);
2769 encode_getattr(xdr, bitmap: bitmask, NULL, len: 3, hdr: &hdr);
2770 encode_nops(hdr: &hdr);
2771}
2772
2773/*
2774 * a RENEW request
2775 */
2776static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2777 const void *data)
2778
2779{
2780 const struct nfs_client *clp = data;
2781 struct compound_hdr hdr = {
2782 .nops = 0,
2783 };
2784
2785 encode_compound_hdr(xdr, req, hdr: &hdr);
2786 encode_renew(xdr, clid: clp->cl_clientid, hdr: &hdr);
2787 encode_nops(hdr: &hdr);
2788}
2789
2790/*
2791 * a SETCLIENTID request
2792 */
2793static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2794 struct xdr_stream *xdr,
2795 const void *data)
2796{
2797 const struct nfs4_setclientid *sc = data;
2798 struct compound_hdr hdr = {
2799 .nops = 0,
2800 };
2801
2802 encode_compound_hdr(xdr, req, hdr: &hdr);
2803 encode_setclientid(xdr, setclientid: sc, hdr: &hdr);
2804 encode_nops(hdr: &hdr);
2805}
2806
2807/*
2808 * a SETCLIENTID_CONFIRM request
2809 */
2810static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2811 struct xdr_stream *xdr,
2812 const void *data)
2813{
2814 const struct nfs4_setclientid_res *arg = data;
2815 struct compound_hdr hdr = {
2816 .nops = 0,
2817 };
2818
2819 encode_compound_hdr(xdr, req, hdr: &hdr);
2820 encode_setclientid_confirm(xdr, arg, hdr: &hdr);
2821 encode_nops(hdr: &hdr);
2822}
2823
2824/*
2825 * DELEGRETURN request
2826 */
2827static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2828 struct xdr_stream *xdr,
2829 const void *data)
2830{
2831 const struct nfs4_delegreturnargs *args = data;
2832 struct compound_hdr hdr = {
2833 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2834 };
2835
2836 encode_compound_hdr(xdr, req, hdr: &hdr);
2837 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2838 encode_putfh(xdr, fh: args->fhandle, hdr: &hdr);
2839 if (args->lr_args)
2840 encode_layoutreturn(xdr, args: args->lr_args, hdr: &hdr);
2841 if (args->sattr_args)
2842 encode_delegattr(xdr, stateid: args->stateid, attr: args->sattr_args, hdr: &hdr);
2843 if (args->bitmask)
2844 encode_getfattr(xdr, bitmask: args->bitmask, hdr: &hdr);
2845 encode_delegreturn(xdr, stateid: args->stateid, hdr: &hdr);
2846 encode_nops(hdr: &hdr);
2847}
2848
2849/*
2850 * Encode FS_LOCATIONS request
2851 */
2852static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2853 struct xdr_stream *xdr,
2854 const void *data)
2855{
2856 const struct nfs4_fs_locations_arg *args = data;
2857 struct compound_hdr hdr = {
2858 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2859 };
2860 uint32_t replen;
2861
2862 encode_compound_hdr(xdr, req, hdr: &hdr);
2863 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2864 if (args->migration) {
2865 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2866 replen = hdr.replen;
2867 encode_fs_locations(xdr, bitmask: args->bitmask, hdr: &hdr);
2868 if (args->renew)
2869 encode_renew(xdr, clid: args->clientid, hdr: &hdr);
2870 } else {
2871 encode_putfh(xdr, fh: args->dir_fh, hdr: &hdr);
2872 encode_lookup(xdr, name: args->name, hdr: &hdr);
2873 replen = hdr.replen;
2874 encode_fs_locations(xdr, bitmask: args->bitmask, hdr: &hdr);
2875 }
2876
2877 rpc_prepare_reply_pages(req, pages: (struct page **)&args->page, base: 0,
2878 PAGE_SIZE, hdrsize: replen);
2879 encode_nops(hdr: &hdr);
2880}
2881
2882/*
2883 * Encode SECINFO request
2884 */
2885static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2886 struct xdr_stream *xdr,
2887 const void *data)
2888{
2889 const struct nfs4_secinfo_arg *args = data;
2890 struct compound_hdr hdr = {
2891 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2892 };
2893
2894 encode_compound_hdr(xdr, req, hdr: &hdr);
2895 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2896 encode_putfh(xdr, fh: args->dir_fh, hdr: &hdr);
2897 encode_secinfo(xdr, name: args->name, hdr: &hdr);
2898 encode_nops(hdr: &hdr);
2899}
2900
2901/*
2902 * Encode FSID_PRESENT request
2903 */
2904static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2905 struct xdr_stream *xdr,
2906 const void *data)
2907{
2908 const struct nfs4_fsid_present_arg *args = data;
2909 struct compound_hdr hdr = {
2910 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
2911 };
2912
2913 encode_compound_hdr(xdr, req, hdr: &hdr);
2914 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
2915 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
2916 encode_getfh(xdr, hdr: &hdr);
2917 if (args->renew)
2918 encode_renew(xdr, clid: args->clientid, hdr: &hdr);
2919 encode_nops(hdr: &hdr);
2920}
2921
2922#if defined(CONFIG_NFS_V4_1)
2923/*
2924 * BIND_CONN_TO_SESSION request
2925 */
2926static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2927 struct xdr_stream *xdr,
2928 const void *data)
2929{
2930 const struct nfs41_bind_conn_to_session_args *args = data;
2931 struct compound_hdr hdr = {
2932 .minorversion = args->client->cl_mvops->minor_version,
2933 };
2934
2935 encode_compound_hdr(xdr, req, &hdr);
2936 encode_bind_conn_to_session(xdr, args, &hdr);
2937 encode_nops(&hdr);
2938}
2939
2940/*
2941 * EXCHANGE_ID request
2942 */
2943static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2944 struct xdr_stream *xdr,
2945 const void *data)
2946{
2947 const struct nfs41_exchange_id_args *args = data;
2948 struct compound_hdr hdr = {
2949 .minorversion = args->client->cl_mvops->minor_version,
2950 };
2951
2952 encode_compound_hdr(xdr, req, &hdr);
2953 encode_exchange_id(xdr, args, &hdr);
2954 encode_nops(&hdr);
2955}
2956
2957/*
2958 * a CREATE_SESSION request
2959 */
2960static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2961 struct xdr_stream *xdr,
2962 const void *data)
2963{
2964 const struct nfs41_create_session_args *args = data;
2965 struct compound_hdr hdr = {
2966 .minorversion = args->client->cl_mvops->minor_version,
2967 };
2968
2969 encode_compound_hdr(xdr, req, &hdr);
2970 encode_create_session(xdr, args, &hdr);
2971 encode_nops(&hdr);
2972}
2973
2974/*
2975 * a DESTROY_SESSION request
2976 */
2977static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2978 struct xdr_stream *xdr,
2979 const void *data)
2980{
2981 const struct nfs4_session *session = data;
2982 struct compound_hdr hdr = {
2983 .minorversion = session->clp->cl_mvops->minor_version,
2984 };
2985
2986 encode_compound_hdr(xdr, req, &hdr);
2987 encode_destroy_session(xdr, session, &hdr);
2988 encode_nops(&hdr);
2989}
2990
2991/*
2992 * a DESTROY_CLIENTID request
2993 */
2994static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2995 struct xdr_stream *xdr,
2996 const void *data)
2997{
2998 const struct nfs_client *clp = data;
2999 struct compound_hdr hdr = {
3000 .minorversion = clp->cl_mvops->minor_version,
3001 };
3002
3003 encode_compound_hdr(xdr, req, &hdr);
3004 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
3005 encode_nops(&hdr);
3006}
3007
3008/*
3009 * a SEQUENCE request
3010 */
3011static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
3012 const void *data)
3013{
3014 const struct nfs4_sequence_args *args = data;
3015 struct compound_hdr hdr = {
3016 .minorversion = nfs4_xdr_minorversion(args),
3017 };
3018
3019 encode_compound_hdr(xdr, req, &hdr);
3020 encode_sequence(xdr, args, &hdr);
3021 encode_nops(&hdr);
3022}
3023
3024#endif
3025
3026/*
3027 * a GET_LEASE_TIME request
3028 */
3029static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
3030 struct xdr_stream *xdr,
3031 const void *data)
3032{
3033 const struct nfs4_get_lease_time_args *args = data;
3034 struct compound_hdr hdr = {
3035 .minorversion = nfs4_xdr_minorversion(args: &args->la_seq_args),
3036 };
3037 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
3038
3039 encode_compound_hdr(xdr, req, hdr: &hdr);
3040 encode_sequence(xdr, args: &args->la_seq_args, hdr: &hdr);
3041 encode_putrootfh(xdr, hdr: &hdr);
3042 encode_fsinfo(xdr, bitmask: lease_bitmap, hdr: &hdr);
3043 encode_nops(hdr: &hdr);
3044}
3045
3046#ifdef CONFIG_NFS_V4_1
3047
3048/*
3049 * a RECLAIM_COMPLETE request
3050 */
3051static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
3052 struct xdr_stream *xdr,
3053 const void *data)
3054{
3055 const struct nfs41_reclaim_complete_args *args = data;
3056 struct compound_hdr hdr = {
3057 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
3058 };
3059
3060 encode_compound_hdr(xdr, req, &hdr);
3061 encode_sequence(xdr, &args->seq_args, &hdr);
3062 encode_reclaim_complete(xdr, args, &hdr);
3063 encode_nops(&hdr);
3064}
3065
3066/*
3067 * Encode GETDEVICEINFO request
3068 */
3069static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
3070 struct xdr_stream *xdr,
3071 const void *data)
3072{
3073 const struct nfs4_getdeviceinfo_args *args = data;
3074 struct compound_hdr hdr = {
3075 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3076 };
3077 uint32_t replen;
3078
3079 encode_compound_hdr(xdr, req, &hdr);
3080 encode_sequence(xdr, &args->seq_args, &hdr);
3081
3082 replen = hdr.replen + op_decode_hdr_maxsz + 2;
3083
3084 encode_getdeviceinfo(xdr, args, &hdr);
3085
3086 /* set up reply kvec. device_addr4 opaque data is read into the
3087 * pages */
3088 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase,
3089 args->pdev->pglen, replen);
3090 encode_nops(&hdr);
3091}
3092
3093/*
3094 * Encode LAYOUTGET request
3095 */
3096static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
3097 struct xdr_stream *xdr,
3098 const void *data)
3099{
3100 const struct nfs4_layoutget_args *args = data;
3101 struct compound_hdr hdr = {
3102 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3103 };
3104
3105 encode_compound_hdr(xdr, req, &hdr);
3106 encode_sequence(xdr, &args->seq_args, &hdr);
3107 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3108 encode_layoutget(xdr, args, &hdr);
3109
3110 rpc_prepare_reply_pages(req, args->layout.pages, 0,
3111 args->layout.pglen, hdr.replen - pagepad_maxsz);
3112 encode_nops(&hdr);
3113}
3114
3115/*
3116 * Encode LAYOUTCOMMIT request
3117 */
3118static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
3119 struct xdr_stream *xdr,
3120 const void *priv)
3121{
3122 const struct nfs4_layoutcommit_args *args = priv;
3123 struct nfs4_layoutcommit_data *data =
3124 container_of(args, struct nfs4_layoutcommit_data, args);
3125 struct compound_hdr hdr = {
3126 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3127 };
3128
3129 encode_compound_hdr(xdr, req, &hdr);
3130 encode_sequence(xdr, &args->seq_args, &hdr);
3131 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3132 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
3133 encode_getfattr(xdr, args->bitmask, &hdr);
3134 encode_nops(&hdr);
3135}
3136
3137/*
3138 * Encode LAYOUTRETURN request
3139 */
3140static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
3141 struct xdr_stream *xdr,
3142 const void *data)
3143{
3144 const struct nfs4_layoutreturn_args *args = data;
3145 struct compound_hdr hdr = {
3146 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3147 };
3148
3149 encode_compound_hdr(xdr, req, &hdr);
3150 encode_sequence(xdr, &args->seq_args, &hdr);
3151 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3152 encode_layoutreturn(xdr, args, &hdr);
3153 encode_nops(&hdr);
3154}
3155
3156/*
3157 * Encode SECINFO_NO_NAME request
3158 */
3159static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3160 struct xdr_stream *xdr,
3161 const void *data)
3162{
3163 const struct nfs41_secinfo_no_name_args *args = data;
3164 struct compound_hdr hdr = {
3165 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3166 };
3167
3168 encode_compound_hdr(xdr, req, &hdr);
3169 encode_sequence(xdr, &args->seq_args, &hdr);
3170 encode_putrootfh(xdr, &hdr);
3171 encode_secinfo_no_name(xdr, args, &hdr);
3172 encode_nops(&hdr);
3173}
3174
3175/*
3176 * Encode TEST_STATEID request
3177 */
3178static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3179 struct xdr_stream *xdr,
3180 const void *data)
3181{
3182 const struct nfs41_test_stateid_args *args = data;
3183 struct compound_hdr hdr = {
3184 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3185 };
3186
3187 encode_compound_hdr(xdr, req, &hdr);
3188 encode_sequence(xdr, &args->seq_args, &hdr);
3189 encode_test_stateid(xdr, args, &hdr);
3190 encode_nops(&hdr);
3191}
3192
3193/*
3194 * Encode FREE_STATEID request
3195 */
3196static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3197 struct xdr_stream *xdr,
3198 const void *data)
3199{
3200 const struct nfs41_free_stateid_args *args = data;
3201 struct compound_hdr hdr = {
3202 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3203 };
3204
3205 encode_compound_hdr(xdr, req, &hdr);
3206 encode_sequence(xdr, &args->seq_args, &hdr);
3207 encode_free_stateid(xdr, args, &hdr);
3208 encode_nops(&hdr);
3209}
3210#endif /* CONFIG_NFS_V4_1 */
3211
3212static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3213{
3214 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, ptr: (void **)string,
3215 NFS4_OPAQUE_LIMIT);
3216 if (unlikely(ret < 0))
3217 return -EIO;
3218 *len = ret;
3219 return 0;
3220}
3221
3222static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3223{
3224 ssize_t ret;
3225 void *ptr;
3226 u32 tmp;
3227
3228 if (xdr_stream_decode_u32(xdr, ptr: &tmp) < 0)
3229 return -EIO;
3230 hdr->status = tmp;
3231
3232 ret = xdr_stream_decode_opaque_inline(xdr, ptr: &ptr, NFS4_OPAQUE_LIMIT);
3233 if (ret < 0)
3234 return -EIO;
3235 hdr->taglen = ret;
3236 hdr->tag = ptr;
3237
3238 if (xdr_stream_decode_u32(xdr, ptr: &tmp) < 0)
3239 return -EIO;
3240 hdr->nops = tmp;
3241 if (unlikely(hdr->nops < 1))
3242 return nfs4_stat_to_errno(stat: hdr->status);
3243 return 0;
3244}
3245
3246static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3247 int *nfs_retval)
3248{
3249 __be32 *p;
3250 uint32_t opnum;
3251 int32_t nfserr;
3252
3253 p = xdr_inline_decode(xdr, nbytes: 8);
3254 if (unlikely(!p))
3255 goto out_overflow;
3256 opnum = be32_to_cpup(p: p++);
3257 if (unlikely(opnum != expected))
3258 goto out_bad_operation;
3259 if (unlikely(*p != cpu_to_be32(NFS_OK)))
3260 goto out_status;
3261 *nfs_retval = 0;
3262 return true;
3263out_status:
3264 nfserr = be32_to_cpup(p);
3265 trace_nfs4_xdr_status(xdr, op: opnum, error: nfserr);
3266 *nfs_retval = nfs4_stat_to_errno(stat: nfserr);
3267 return true;
3268out_bad_operation:
3269 trace_nfs4_xdr_bad_operation(xdr, op: opnum, expected);
3270 *nfs_retval = -EREMOTEIO;
3271 return false;
3272out_overflow:
3273 *nfs_retval = -EIO;
3274 return false;
3275}
3276
3277static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3278{
3279 int retval;
3280
3281 __decode_op_hdr(xdr, expected, nfs_retval: &retval);
3282 return retval;
3283}
3284
3285/* Dummy routine */
3286static int decode_ace(struct xdr_stream *xdr, void *ace)
3287{
3288 __be32 *p;
3289 unsigned int strlen;
3290 char *str;
3291
3292 p = xdr_inline_decode(xdr, nbytes: 12);
3293 if (unlikely(!p))
3294 return -EIO;
3295 return decode_opaque_inline(xdr, len: &strlen, string: &str);
3296}
3297
3298static ssize_t
3299decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz)
3300{
3301 ssize_t ret;
3302
3303 ret = xdr_stream_decode_uint32_array(xdr, array: bitmap, array_size: sz);
3304 if (likely(ret >= 0))
3305 return ret;
3306 if (ret != -EMSGSIZE)
3307 return -EIO;
3308 return sz;
3309}
3310
3311static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3312{
3313 ssize_t ret;
3314 ret = decode_bitmap4(xdr, bitmap, sz: 3);
3315 return ret < 0 ? ret : 0;
3316}
3317
3318static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3319{
3320 __be32 *p;
3321
3322 p = xdr_inline_decode(xdr, nbytes: 4);
3323 if (unlikely(!p))
3324 return -EIO;
3325 *attrlen = be32_to_cpup(p);
3326 *savep = xdr_stream_pos(xdr);
3327 return 0;
3328}
3329
3330static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3331{
3332 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3333 int ret;
3334 ret = decode_attr_bitmap(xdr, bitmap: bitmask);
3335 if (unlikely(ret < 0))
3336 return ret;
3337 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3338 } else
3339 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3340 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3341 bitmask[0], bitmask[1], bitmask[2]);
3342 return 0;
3343}
3344
3345static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3346{
3347 __be32 *p;
3348 int ret = 0;
3349
3350 *type = 0;
3351 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3352 return -EIO;
3353 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3354 p = xdr_inline_decode(xdr, nbytes: 4);
3355 if (unlikely(!p))
3356 return -EIO;
3357 *type = be32_to_cpup(p);
3358 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3359 dprintk("%s: bad type %d\n", __func__, *type);
3360 return -EIO;
3361 }
3362 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3363 ret = NFS_ATTR_FATTR_TYPE;
3364 }
3365 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3366 return ret;
3367}
3368
3369static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3370 uint32_t *bitmap, uint32_t *type)
3371{
3372 __be32 *p;
3373
3374 *type = 0;
3375 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3376 return -EIO;
3377 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3378 p = xdr_inline_decode(xdr, nbytes: 4);
3379 if (unlikely(!p))
3380 return -EIO;
3381 *type = be32_to_cpup(p);
3382 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3383 }
3384 dprintk("%s: expire type=0x%x\n", __func__, *type);
3385 return 0;
3386}
3387
3388static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3389{
3390 __be32 *p;
3391 int ret = 0;
3392
3393 *change = 0;
3394 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3395 return -EIO;
3396 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3397 p = xdr_inline_decode(xdr, nbytes: 8);
3398 if (unlikely(!p))
3399 return -EIO;
3400 xdr_decode_hyper(p, valp: change);
3401 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3402 ret = NFS_ATTR_FATTR_CHANGE;
3403 }
3404 dprintk("%s: change attribute=%Lu\n", __func__,
3405 (unsigned long long)*change);
3406 return ret;
3407}
3408
3409static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3410{
3411 __be32 *p;
3412 int ret = 0;
3413
3414 *size = 0;
3415 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3416 return -EIO;
3417 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3418 p = xdr_inline_decode(xdr, nbytes: 8);
3419 if (unlikely(!p))
3420 return -EIO;
3421 xdr_decode_hyper(p, valp: size);
3422 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3423 ret = NFS_ATTR_FATTR_SIZE;
3424 }
3425 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3426 return ret;
3427}
3428
3429static int decode_attr_link_support(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_LINK_SUPPORT - 1U)))
3435 return -EIO;
3436 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3437 p = xdr_inline_decode(xdr, nbytes: 4);
3438 if (unlikely(!p))
3439 return -EIO;
3440 *res = be32_to_cpup(p);
3441 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3442 }
3443 dprintk("%s: link support=%s\n", __func__, str_false_true(*res == 0));
3444 return 0;
3445}
3446
3447static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3448{
3449 __be32 *p;
3450
3451 *res = 0;
3452 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3453 return -EIO;
3454 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3455 p = xdr_inline_decode(xdr, nbytes: 4);
3456 if (unlikely(!p))
3457 return -EIO;
3458 *res = be32_to_cpup(p);
3459 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3460 }
3461 dprintk("%s: symlink support=%s\n", __func__, str_false_true(*res == 0));
3462 return 0;
3463}
3464
3465static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3466{
3467 __be32 *p;
3468 int ret = 0;
3469
3470 fsid->major = 0;
3471 fsid->minor = 0;
3472 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3473 return -EIO;
3474 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3475 p = xdr_inline_decode(xdr, nbytes: 16);
3476 if (unlikely(!p))
3477 return -EIO;
3478 p = xdr_decode_hyper(p, valp: &fsid->major);
3479 xdr_decode_hyper(p, valp: &fsid->minor);
3480 bitmap[0] &= ~FATTR4_WORD0_FSID;
3481 ret = NFS_ATTR_FATTR_FSID;
3482 }
3483 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3484 (unsigned long long)fsid->major,
3485 (unsigned long long)fsid->minor);
3486 return ret;
3487}
3488
3489static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3490{
3491 __be32 *p;
3492
3493 *res = 60;
3494 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3495 return -EIO;
3496 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3497 p = xdr_inline_decode(xdr, nbytes: 4);
3498 if (unlikely(!p))
3499 return -EIO;
3500 *res = be32_to_cpup(p);
3501 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3502 }
3503 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res);
3504 return 0;
3505}
3506
3507static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3508{
3509 __be32 *p;
3510
3511 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3512 return -EIO;
3513 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3514 p = xdr_inline_decode(xdr, nbytes: 4);
3515 if (unlikely(!p))
3516 return -EIO;
3517 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3518 *res = -be32_to_cpup(p);
3519 }
3520 return 0;
3521}
3522
3523static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3524 uint32_t *bitmap, uint32_t *bitmask)
3525{
3526 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3527 int ret;
3528 ret = decode_attr_bitmap(xdr, bitmap: bitmask);
3529 if (unlikely(ret < 0))
3530 return ret;
3531 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3532 } else
3533 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3534 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3535 bitmask[0], bitmask[1], bitmask[2]);
3536 return 0;
3537}
3538
3539static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3540{
3541 __be32 *p;
3542 u32 len;
3543
3544 if (fh != NULL)
3545 memset(s: fh, c: 0, n: sizeof(*fh));
3546
3547 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3548 return -EIO;
3549 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3550 p = xdr_inline_decode(xdr, nbytes: 4);
3551 if (unlikely(!p))
3552 return -EIO;
3553 len = be32_to_cpup(p);
3554 if (len > NFS4_FHSIZE || len == 0) {
3555 trace_nfs4_xdr_bad_filehandle(xdr, op: OP_READDIR,
3556 error: NFS4ERR_BADHANDLE);
3557 return -EREMOTEIO;
3558 }
3559 p = xdr_inline_decode(xdr, nbytes: len);
3560 if (unlikely(!p))
3561 return -EIO;
3562 if (fh != NULL) {
3563 memcpy(to: fh->data, from: p, len);
3564 fh->size = len;
3565 }
3566 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3567 }
3568 return 0;
3569}
3570
3571static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3572{
3573 __be32 *p;
3574
3575 *res = 0;
3576 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3577 return -EIO;
3578 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3579 p = xdr_inline_decode(xdr, nbytes: 4);
3580 if (unlikely(!p))
3581 return -EIO;
3582 *res = be32_to_cpup(p);
3583 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3584 }
3585 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3586 return 0;
3587}
3588
3589static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3590{
3591 __be32 *p;
3592
3593 *res = 0;
3594 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_INSENSITIVE - 1U)))
3595 return -EIO;
3596 if (likely(bitmap[0] & FATTR4_WORD0_CASE_INSENSITIVE)) {
3597 p = xdr_inline_decode(xdr, nbytes: 4);
3598 if (unlikely(!p))
3599 return -EIO;
3600 *res = be32_to_cpup(p);
3601 bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE;
3602 }
3603 dprintk("%s: case_insensitive=%s\n", __func__, str_false_true(*res == 0));
3604 return 0;
3605}
3606
3607static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3608{
3609 __be32 *p;
3610
3611 *res = 0;
3612 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_PRESERVING - 1U)))
3613 return -EIO;
3614 if (likely(bitmap[0] & FATTR4_WORD0_CASE_PRESERVING)) {
3615 p = xdr_inline_decode(xdr, nbytes: 4);
3616 if (unlikely(!p))
3617 return -EIO;
3618 *res = be32_to_cpup(p);
3619 bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING;
3620 }
3621 dprintk("%s: case_preserving=%s\n", __func__, str_false_true(*res == 0));
3622 return 0;
3623}
3624
3625static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3626{
3627 __be32 *p;
3628 int ret = 0;
3629
3630 *fileid = 0;
3631 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3632 return -EIO;
3633 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3634 p = xdr_inline_decode(xdr, nbytes: 8);
3635 if (unlikely(!p))
3636 return -EIO;
3637 xdr_decode_hyper(p, valp: fileid);
3638 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3639 ret = NFS_ATTR_FATTR_FILEID;
3640 }
3641 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3642 return ret;
3643}
3644
3645static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3646{
3647 __be32 *p;
3648 int ret = 0;
3649
3650 *fileid = 0;
3651 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3652 return -EIO;
3653 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3654 p = xdr_inline_decode(xdr, nbytes: 8);
3655 if (unlikely(!p))
3656 return -EIO;
3657 xdr_decode_hyper(p, valp: fileid);
3658 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3659 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3660 }
3661 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3662 return ret;
3663}
3664
3665static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3666{
3667 __be32 *p;
3668 int status = 0;
3669
3670 *res = 0;
3671 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3672 return -EIO;
3673 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3674 p = xdr_inline_decode(xdr, nbytes: 8);
3675 if (unlikely(!p))
3676 return -EIO;
3677 xdr_decode_hyper(p, valp: res);
3678 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3679 }
3680 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3681 return status;
3682}
3683
3684static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3685{
3686 __be32 *p;
3687 int status = 0;
3688
3689 *res = 0;
3690 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3691 return -EIO;
3692 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3693 p = xdr_inline_decode(xdr, nbytes: 8);
3694 if (unlikely(!p))
3695 return -EIO;
3696 xdr_decode_hyper(p, valp: res);
3697 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3698 }
3699 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3700 return status;
3701}
3702
3703static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3704{
3705 __be32 *p;
3706 int status = 0;
3707
3708 *res = 0;
3709 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3710 return -EIO;
3711 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3712 p = xdr_inline_decode(xdr, nbytes: 8);
3713 if (unlikely(!p))
3714 return -EIO;
3715 xdr_decode_hyper(p, valp: res);
3716 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3717 }
3718 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3719 return status;
3720}
3721
3722static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3723{
3724 u32 n;
3725 __be32 *p;
3726 int status = 0;
3727
3728 p = xdr_inline_decode(xdr, nbytes: 4);
3729 if (unlikely(!p))
3730 return -EIO;
3731 n = be32_to_cpup(p);
3732 if (n == 0)
3733 goto root_path;
3734 dprintk("pathname4: ");
3735 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3736 dprintk("cannot parse %d components in path\n", n);
3737 goto out_eio;
3738 }
3739 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3740 struct nfs4_string *component = &path->components[path->ncomponents];
3741 status = decode_opaque_inline(xdr, len: &component->len, string: &component->data);
3742 if (unlikely(status != 0))
3743 goto out_eio;
3744 ifdebug (XDR)
3745 pr_cont("%s%.*s ",
3746 (path->ncomponents != n ? "/ " : ""),
3747 component->len, component->data);
3748 }
3749out:
3750 return status;
3751root_path:
3752/* a root pathname is sent as a zero component4 */
3753 path->ncomponents = 1;
3754 path->components[0].len=0;
3755 path->components[0].data=NULL;
3756 dprintk("pathname4: /\n");
3757 goto out;
3758out_eio:
3759 dprintk(" status %d", status);
3760 status = -EIO;
3761 goto out;
3762}
3763
3764static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3765{
3766 int n;
3767 __be32 *p;
3768 int status = -EIO;
3769
3770 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3771 goto out;
3772 status = 0;
3773 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3774 goto out;
3775 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3776 status = -EIO;
3777 /* Ignore borken servers that return unrequested attrs */
3778 if (unlikely(res == NULL))
3779 goto out;
3780 dprintk("%s: fsroot:\n", __func__);
3781 status = decode_pathname(xdr, path: &res->fs_path);
3782 if (unlikely(status != 0))
3783 goto out;
3784 p = xdr_inline_decode(xdr, nbytes: 4);
3785 if (unlikely(!p))
3786 goto out_eio;
3787 n = be32_to_cpup(p);
3788 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3789 u32 m;
3790 struct nfs4_fs_location *loc;
3791
3792 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3793 break;
3794 loc = &res->locations[res->nlocations];
3795 p = xdr_inline_decode(xdr, nbytes: 4);
3796 if (unlikely(!p))
3797 goto out_eio;
3798 m = be32_to_cpup(p);
3799
3800 dprintk("%s: servers:\n", __func__);
3801 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3802 struct nfs4_string *server;
3803
3804 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3805 unsigned int i;
3806 dprintk("%s: using first %u of %u servers "
3807 "returned for location %u\n",
3808 __func__,
3809 NFS4_FS_LOCATION_MAXSERVERS,
3810 m, res->nlocations);
3811 for (i = loc->nservers; i < m; i++) {
3812 unsigned int len;
3813 char *data;
3814 status = decode_opaque_inline(xdr, len: &len, string: &data);
3815 if (unlikely(status != 0))
3816 goto out_eio;
3817 }
3818 break;
3819 }
3820 server = &loc->servers[loc->nservers];
3821 status = decode_opaque_inline(xdr, len: &server->len, string: &server->data);
3822 if (unlikely(status != 0))
3823 goto out_eio;
3824 dprintk("%s ", server->data);
3825 }
3826 status = decode_pathname(xdr, path: &loc->rootpath);
3827 if (unlikely(status != 0))
3828 goto out_eio;
3829 }
3830 if (res->nlocations != 0)
3831 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3832out:
3833 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3834 return status;
3835out_eio:
3836 status = -EIO;
3837 goto out;
3838}
3839
3840static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3841{
3842 __be32 *p;
3843 int status = 0;
3844
3845 *res = 0;
3846 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3847 return -EIO;
3848 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3849 p = xdr_inline_decode(xdr, nbytes: 8);
3850 if (unlikely(!p))
3851 return -EIO;
3852 xdr_decode_hyper(p, valp: res);
3853 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3854 }
3855 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3856 return status;
3857}
3858
3859static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3860{
3861 __be32 *p;
3862 int status = 0;
3863
3864 *maxlink = 1;
3865 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3866 return -EIO;
3867 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3868 p = xdr_inline_decode(xdr, nbytes: 4);
3869 if (unlikely(!p))
3870 return -EIO;
3871 *maxlink = be32_to_cpup(p);
3872 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3873 }
3874 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3875 return status;
3876}
3877
3878static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3879{
3880 __be32 *p;
3881 int status = 0;
3882
3883 *maxname = 1024;
3884 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3885 return -EIO;
3886 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3887 p = xdr_inline_decode(xdr, nbytes: 4);
3888 if (unlikely(!p))
3889 return -EIO;
3890 *maxname = be32_to_cpup(p);
3891 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3892 }
3893 dprintk("%s: maxname=%u\n", __func__, *maxname);
3894 return status;
3895}
3896
3897static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3898{
3899 __be32 *p;
3900 int status = 0;
3901
3902 *res = 1024;
3903 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3904 return -EIO;
3905 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3906 uint64_t maxread;
3907 p = xdr_inline_decode(xdr, nbytes: 8);
3908 if (unlikely(!p))
3909 return -EIO;
3910 xdr_decode_hyper(p, valp: &maxread);
3911 if (maxread > 0x7FFFFFFF)
3912 maxread = 0x7FFFFFFF;
3913 *res = (uint32_t)maxread;
3914 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3915 }
3916 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3917 return status;
3918}
3919
3920static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3921{
3922 __be32 *p;
3923 int status = 0;
3924
3925 *res = 1024;
3926 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3927 return -EIO;
3928 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3929 uint64_t maxwrite;
3930 p = xdr_inline_decode(xdr, nbytes: 8);
3931 if (unlikely(!p))
3932 return -EIO;
3933 xdr_decode_hyper(p, valp: &maxwrite);
3934 if (maxwrite > 0x7FFFFFFF)
3935 maxwrite = 0x7FFFFFFF;
3936 *res = (uint32_t)maxwrite;
3937 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3938 }
3939 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3940 return status;
3941}
3942
3943static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3944{
3945 uint32_t tmp;
3946 __be32 *p;
3947 int ret = 0;
3948
3949 *mode = 0;
3950 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3951 return -EIO;
3952 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3953 p = xdr_inline_decode(xdr, nbytes: 4);
3954 if (unlikely(!p))
3955 return -EIO;
3956 tmp = be32_to_cpup(p);
3957 *mode = tmp & ~S_IFMT;
3958 bitmap[1] &= ~FATTR4_WORD1_MODE;
3959 ret = NFS_ATTR_FATTR_MODE;
3960 }
3961 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3962 return ret;
3963}
3964
3965static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3966{
3967 __be32 *p;
3968 int ret = 0;
3969
3970 *nlink = 1;
3971 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3972 return -EIO;
3973 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3974 p = xdr_inline_decode(xdr, nbytes: 4);
3975 if (unlikely(!p))
3976 return -EIO;
3977 *nlink = be32_to_cpup(p);
3978 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3979 ret = NFS_ATTR_FATTR_NLINK;
3980 }
3981 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3982 return ret;
3983}
3984
3985static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3986 struct nfs4_string *name, gfp_t gfp_flags)
3987{
3988 ssize_t ret;
3989
3990 ret = xdr_stream_decode_string_dup(xdr, str: &name->data,
3991 XDR_MAX_NETOBJ, gfp_flags);
3992 name->len = 0;
3993 if (ret > 0)
3994 name->len = ret;
3995 return ret;
3996}
3997
3998static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3999 const struct nfs_server *server, kuid_t *uid,
4000 struct nfs4_string *owner_name)
4001{
4002 ssize_t len;
4003 char *p;
4004
4005 *uid = make_kuid(from: &init_user_ns, uid: -2);
4006 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
4007 return -EIO;
4008 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
4009 return 0;
4010 bitmap[1] &= ~FATTR4_WORD1_OWNER;
4011
4012 if (owner_name != NULL) {
4013 len = decode_nfs4_string(xdr, name: owner_name, GFP_NOIO);
4014 if (len <= 0)
4015 goto out;
4016 dprintk("%s: name=%s\n", __func__, owner_name->data);
4017 return NFS_ATTR_FATTR_OWNER_NAME;
4018 } else {
4019 len = xdr_stream_decode_opaque_inline(xdr, ptr: (void **)&p,
4020 XDR_MAX_NETOBJ);
4021 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
4022 goto out;
4023 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
4024 return NFS_ATTR_FATTR_OWNER;
4025 }
4026out:
4027 if (len == -EBADMSG)
4028 return -EIO;
4029 return 0;
4030}
4031
4032static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
4033 const struct nfs_server *server, kgid_t *gid,
4034 struct nfs4_string *group_name)
4035{
4036 ssize_t len;
4037 char *p;
4038
4039 *gid = make_kgid(from: &init_user_ns, gid: -2);
4040 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
4041 return -EIO;
4042 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
4043 return 0;
4044 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
4045
4046 if (group_name != NULL) {
4047 len = decode_nfs4_string(xdr, name: group_name, GFP_NOIO);
4048 if (len <= 0)
4049 goto out;
4050 dprintk("%s: name=%s\n", __func__, group_name->data);
4051 return NFS_ATTR_FATTR_GROUP_NAME;
4052 } else {
4053 len = xdr_stream_decode_opaque_inline(xdr, ptr: (void **)&p,
4054 XDR_MAX_NETOBJ);
4055 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
4056 goto out;
4057 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
4058 return NFS_ATTR_FATTR_GROUP;
4059 }
4060out:
4061 if (len == -EBADMSG)
4062 return -EIO;
4063 return 0;
4064}
4065
4066static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
4067{
4068 uint32_t major = 0, minor = 0;
4069 __be32 *p;
4070 int ret = 0;
4071
4072 *rdev = MKDEV(0,0);
4073 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
4074 return -EIO;
4075 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
4076 dev_t tmp;
4077
4078 p = xdr_inline_decode(xdr, nbytes: 8);
4079 if (unlikely(!p))
4080 return -EIO;
4081 major = be32_to_cpup(p: p++);
4082 minor = be32_to_cpup(p);
4083 tmp = MKDEV(major, minor);
4084 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
4085 *rdev = tmp;
4086 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
4087 ret = NFS_ATTR_FATTR_RDEV;
4088 }
4089 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4090 return ret;
4091}
4092
4093static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4094{
4095 __be32 *p;
4096 int status = 0;
4097
4098 *res = 0;
4099 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4100 return -EIO;
4101 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4102 p = xdr_inline_decode(xdr, nbytes: 8);
4103 if (unlikely(!p))
4104 return -EIO;
4105 xdr_decode_hyper(p, valp: res);
4106 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4107 }
4108 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4109 return status;
4110}
4111
4112static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4113{
4114 __be32 *p;
4115 int status = 0;
4116
4117 *res = 0;
4118 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4119 return -EIO;
4120 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4121 p = xdr_inline_decode(xdr, nbytes: 8);
4122 if (unlikely(!p))
4123 return -EIO;
4124 xdr_decode_hyper(p, valp: res);
4125 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4126 }
4127 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4128 return status;
4129}
4130
4131static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4132{
4133 __be32 *p;
4134 int status = 0;
4135
4136 *res = 0;
4137 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4138 return -EIO;
4139 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4140 p = xdr_inline_decode(xdr, nbytes: 8);
4141 if (unlikely(!p))
4142 return -EIO;
4143 xdr_decode_hyper(p, valp: res);
4144 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4145 }
4146 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4147 return status;
4148}
4149
4150static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4151{
4152 __be32 *p;
4153 int ret = 0;
4154
4155 *used = 0;
4156 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4157 return -EIO;
4158 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4159 p = xdr_inline_decode(xdr, nbytes: 8);
4160 if (unlikely(!p))
4161 return -EIO;
4162 xdr_decode_hyper(p, valp: used);
4163 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4164 ret = NFS_ATTR_FATTR_SPACE_USED;
4165 }
4166 dprintk("%s: space used=%Lu\n", __func__,
4167 (unsigned long long)*used);
4168 return ret;
4169}
4170
4171static __be32 *
4172xdr_decode_nfstime4(__be32 *p, struct timespec64 *t)
4173{
4174 __u64 sec;
4175
4176 p = xdr_decode_hyper(p, valp: &sec);
4177 t-> tv_sec = sec;
4178 t->tv_nsec = be32_to_cpup(p: p++);
4179 return p;
4180}
4181
4182static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time)
4183{
4184 __be32 *p;
4185
4186 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2);
4187 if (unlikely(!p))
4188 return -EIO;
4189 xdr_decode_nfstime4(p, t: time);
4190 return 0;
4191}
4192
4193static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4194{
4195 int status = 0;
4196
4197 time->tv_sec = 0;
4198 time->tv_nsec = 0;
4199 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4200 return -EIO;
4201 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4202 status = decode_attr_time(xdr, time);
4203 if (status == 0)
4204 status = NFS_ATTR_FATTR_ATIME;
4205 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4206 }
4207 dprintk("%s: atime=%lld\n", __func__, time->tv_sec);
4208 return status;
4209}
4210
4211static int decode_attr_time_create(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4212{
4213 int status = 0;
4214
4215 time->tv_sec = 0;
4216 time->tv_nsec = 0;
4217 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_CREATE - 1U)))
4218 return -EIO;
4219 if (likely(bitmap[1] & FATTR4_WORD1_TIME_CREATE)) {
4220 status = decode_attr_time(xdr, time);
4221 if (status == 0)
4222 status = NFS_ATTR_FATTR_BTIME;
4223 bitmap[1] &= ~FATTR4_WORD1_TIME_CREATE;
4224 }
4225 dprintk("%s: btime=%lld\n", __func__, time->tv_sec);
4226 return status;
4227}
4228
4229static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4230{
4231 int status = 0;
4232
4233 time->tv_sec = 0;
4234 time->tv_nsec = 0;
4235 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4236 return -EIO;
4237 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4238 status = decode_attr_time(xdr, time);
4239 if (status == 0)
4240 status = NFS_ATTR_FATTR_CTIME;
4241 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4242 }
4243 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec);
4244 return status;
4245}
4246
4247static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4248 struct timespec64 *time)
4249{
4250 int status = 0;
4251
4252 time->tv_sec = 0;
4253 time->tv_nsec = 0;
4254 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4255 return -EIO;
4256 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4257 status = decode_attr_time(xdr, time);
4258 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4259 }
4260 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec,
4261 time->tv_nsec);
4262 return status;
4263}
4264
4265static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4266 struct nfs4_label *label)
4267{
4268 uint32_t pi = 0;
4269 uint32_t lfs = 0;
4270 __u32 len;
4271 __be32 *p;
4272 int status = 0;
4273
4274 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4275 return -EIO;
4276 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4277 p = xdr_inline_decode(xdr, nbytes: 4);
4278 if (unlikely(!p))
4279 return -EIO;
4280 lfs = be32_to_cpup(p: p++);
4281 p = xdr_inline_decode(xdr, nbytes: 4);
4282 if (unlikely(!p))
4283 return -EIO;
4284 pi = be32_to_cpup(p: p++);
4285 p = xdr_inline_decode(xdr, nbytes: 4);
4286 if (unlikely(!p))
4287 return -EIO;
4288 len = be32_to_cpup(p: p++);
4289 p = xdr_inline_decode(xdr, nbytes: len);
4290 if (unlikely(!p))
4291 return -EIO;
4292 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4293 if (len < NFS4_MAXLABELLEN) {
4294 if (label && label->len) {
4295 if (label->len < len)
4296 return -ERANGE;
4297 memcpy(to: label->label, from: p, len);
4298 label->len = len;
4299 label->pi = pi;
4300 label->lfs = lfs;
4301 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4302 }
4303 } else
4304 printk(KERN_WARNING "%s: label too long (%u)!\n",
4305 __func__, len);
4306 if (label && label->label)
4307 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n",
4308 __func__, label->len, (char *)label->label,
4309 label->len, label->pi, label->lfs);
4310 }
4311 return status;
4312}
4313
4314static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
4315{
4316 int status = 0;
4317
4318 time->tv_sec = 0;
4319 time->tv_nsec = 0;
4320 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4321 return -EIO;
4322 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4323 status = decode_attr_time(xdr, time);
4324 if (status == 0)
4325 status = NFS_ATTR_FATTR_MTIME;
4326 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4327 }
4328 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec);
4329 return status;
4330}
4331
4332static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
4333 uint32_t *res)
4334{
4335 __be32 *p;
4336
4337 *res = 0;
4338 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U)))
4339 return -EIO;
4340 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) {
4341 p = xdr_inline_decode(xdr, nbytes: 4);
4342 if (unlikely(!p))
4343 return -EIO;
4344 *res = be32_to_cpup(p);
4345 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
4346 }
4347 dprintk("%s: XATTR support=%s\n", __func__, str_false_true(*res == 0));
4348 return 0;
4349}
4350
4351static int decode_attr_open_arguments(struct xdr_stream *xdr, uint32_t *bitmap,
4352 struct nfs4_open_caps *res)
4353{
4354 memset(s: res, c: 0, n: sizeof(*res));
4355 if (unlikely(bitmap[2] & (FATTR4_WORD2_OPEN_ARGUMENTS - 1U)))
4356 return -EIO;
4357 if (likely(bitmap[2] & FATTR4_WORD2_OPEN_ARGUMENTS)) {
4358 if (decode_bitmap4(xdr, bitmap: res->oa_share_access, ARRAY_SIZE(res->oa_share_access)) < 0)
4359 return -EIO;
4360 if (decode_bitmap4(xdr, bitmap: res->oa_share_deny, ARRAY_SIZE(res->oa_share_deny)) < 0)
4361 return -EIO;
4362 if (decode_bitmap4(xdr, bitmap: res->oa_share_access_want, ARRAY_SIZE(res->oa_share_access_want)) < 0)
4363 return -EIO;
4364 if (decode_bitmap4(xdr, bitmap: res->oa_open_claim, ARRAY_SIZE(res->oa_open_claim)) < 0)
4365 return -EIO;
4366 if (decode_bitmap4(xdr, bitmap: res->oa_createmode, ARRAY_SIZE(res->oa_createmode)) < 0)
4367 return -EIO;
4368 bitmap[2] &= ~FATTR4_WORD2_OPEN_ARGUMENTS;
4369 }
4370 return 0;
4371}
4372
4373static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4374{
4375 unsigned int attrwords = XDR_QUADLEN(attrlen);
4376 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4377
4378 if (unlikely(attrwords != nwords)) {
4379 dprintk("%s: server returned incorrect attribute length: "
4380 "%u %c %u\n",
4381 __func__,
4382 attrwords << 2,
4383 (attrwords < nwords) ? '<' : '>',
4384 nwords << 2);
4385 return -EIO;
4386 }
4387 return 0;
4388}
4389
4390static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4391{
4392 __be32 *p;
4393
4394 p = xdr_inline_decode(xdr, nbytes: 20);
4395 if (unlikely(!p))
4396 return -EIO;
4397 cinfo->atomic = be32_to_cpup(p: p++);
4398 p = xdr_decode_hyper(p, valp: &cinfo->before);
4399 xdr_decode_hyper(p, valp: &cinfo->after);
4400 return 0;
4401}
4402
4403static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4404{
4405 __be32 *p;
4406 uint32_t supp, acc;
4407 int status;
4408
4409 status = decode_op_hdr(xdr, expected: OP_ACCESS);
4410 if (status)
4411 return status;
4412 p = xdr_inline_decode(xdr, nbytes: 8);
4413 if (unlikely(!p))
4414 return -EIO;
4415 supp = be32_to_cpup(p: p++);
4416 acc = be32_to_cpup(p);
4417 *supported = supp;
4418 *access = acc;
4419 return 0;
4420}
4421
4422static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4423{
4424 return decode_opaque_fixed(xdr, buf: stateid, NFS4_STATEID_SIZE);
4425}
4426
4427static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4428{
4429 stateid->type = NFS4_OPEN_STATEID_TYPE;
4430 return decode_stateid(xdr, stateid);
4431}
4432
4433static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4434{
4435 stateid->type = NFS4_LOCK_STATEID_TYPE;
4436 return decode_stateid(xdr, stateid);
4437}
4438
4439static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4440{
4441 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4442 return decode_stateid(xdr, stateid);
4443}
4444
4445static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4446{
4447 nfs4_stateid dummy;
4448
4449 nfs4_stateid_copy(dst: stateid, src: &invalid_stateid);
4450 return decode_stateid(xdr, stateid: &dummy);
4451}
4452
4453static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4454{
4455 int status;
4456
4457 status = decode_op_hdr(xdr, expected: OP_CLOSE);
4458 if (status != -EIO)
4459 nfs_increment_open_seqid(status, seqid: res->seqid);
4460 if (!status)
4461 status = decode_invalid_stateid(xdr, stateid: &res->stateid);
4462 return status;
4463}
4464
4465static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4466{
4467 return decode_opaque_fixed(xdr, buf: verifier, NFS4_VERIFIER_SIZE);
4468}
4469
4470static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4471{
4472 return decode_opaque_fixed(xdr, buf: verifier->data, NFS4_VERIFIER_SIZE);
4473}
4474
4475static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4476{
4477 struct nfs_writeverf *verf = res->verf;
4478 int status;
4479
4480 status = decode_op_hdr(xdr, expected: OP_COMMIT);
4481 if (!status)
4482 status = decode_write_verifier(xdr, verifier: &verf->verifier);
4483 if (!status)
4484 verf->committed = NFS_FILE_SYNC;
4485 return status;
4486}
4487
4488static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4489{
4490 __be32 *p;
4491 uint32_t bmlen;
4492 int status;
4493
4494 status = decode_op_hdr(xdr, expected: OP_CREATE);
4495 if (status)
4496 return status;
4497 if ((status = decode_change_info(xdr, cinfo)))
4498 return status;
4499 p = xdr_inline_decode(xdr, nbytes: 4);
4500 if (unlikely(!p))
4501 return -EIO;
4502 bmlen = be32_to_cpup(p);
4503 p = xdr_inline_decode(xdr, nbytes: bmlen << 2);
4504 if (likely(p))
4505 return 0;
4506 return -EIO;
4507}
4508
4509static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4510{
4511 unsigned int savep;
4512 uint32_t attrlen, bitmap[3] = {0};
4513 int status;
4514
4515 if ((status = decode_op_hdr(xdr, expected: OP_GETATTR)) != 0)
4516 goto xdr_error;
4517 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4518 goto xdr_error;
4519 if ((status = decode_attr_length(xdr, attrlen: &attrlen, savep: &savep)) != 0)
4520 goto xdr_error;
4521 if ((status = decode_attr_supported(xdr, bitmap, bitmask: res->attr_bitmask)) != 0)
4522 goto xdr_error;
4523 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4524 type: &res->fh_expire_type)) != 0)
4525 goto xdr_error;
4526 if ((status = decode_attr_link_support(xdr, bitmap, res: &res->has_links)) != 0)
4527 goto xdr_error;
4528 if ((status = decode_attr_symlink_support(xdr, bitmap, res: &res->has_symlinks)) != 0)
4529 goto xdr_error;
4530 if ((status = decode_attr_aclsupport(xdr, bitmap, res: &res->acl_bitmask)) != 0)
4531 goto xdr_error;
4532 if ((status = decode_attr_case_insensitive(xdr, bitmap, res: &res->case_insensitive)) != 0)
4533 goto xdr_error;
4534 if ((status = decode_attr_case_preserving(xdr, bitmap, res: &res->case_preserving)) != 0)
4535 goto xdr_error;
4536 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4537 bitmask: res->exclcreat_bitmask)) != 0)
4538 goto xdr_error;
4539 if ((status = decode_attr_open_arguments(xdr, bitmap, res: &res->open_caps)) != 0)
4540 goto xdr_error;
4541 status = verify_attr_len(xdr, savep, attrlen);
4542xdr_error:
4543 dprintk("%s: xdr returned %d!\n", __func__, -status);
4544 return status;
4545}
4546
4547static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4548{
4549 unsigned int savep;
4550 uint32_t attrlen, bitmap[3] = {0};
4551 int status;
4552
4553 if ((status = decode_op_hdr(xdr, expected: OP_GETATTR)) != 0)
4554 goto xdr_error;
4555 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4556 goto xdr_error;
4557 if ((status = decode_attr_length(xdr, attrlen: &attrlen, savep: &savep)) != 0)
4558 goto xdr_error;
4559
4560 if ((status = decode_attr_files_avail(xdr, bitmap, res: &fsstat->afiles)) != 0)
4561 goto xdr_error;
4562 if ((status = decode_attr_files_free(xdr, bitmap, res: &fsstat->ffiles)) != 0)
4563 goto xdr_error;
4564 if ((status = decode_attr_files_total(xdr, bitmap, res: &fsstat->tfiles)) != 0)
4565 goto xdr_error;
4566
4567 status = -EIO;
4568 if (unlikely(bitmap[0]))
4569 goto xdr_error;
4570
4571 if ((status = decode_attr_space_avail(xdr, bitmap, res: &fsstat->abytes)) != 0)
4572 goto xdr_error;
4573 if ((status = decode_attr_space_free(xdr, bitmap, res: &fsstat->fbytes)) != 0)
4574 goto xdr_error;
4575 if ((status = decode_attr_space_total(xdr, bitmap, res: &fsstat->tbytes)) != 0)
4576 goto xdr_error;
4577
4578 status = verify_attr_len(xdr, savep, attrlen);
4579xdr_error:
4580 dprintk("%s: xdr returned %d!\n", __func__, -status);
4581 return status;
4582}
4583
4584static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4585{
4586 unsigned int savep;
4587 uint32_t attrlen, bitmap[3] = {0};
4588 int status;
4589
4590 if ((status = decode_op_hdr(xdr, expected: OP_GETATTR)) != 0)
4591 goto xdr_error;
4592 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4593 goto xdr_error;
4594 if ((status = decode_attr_length(xdr, attrlen: &attrlen, savep: &savep)) != 0)
4595 goto xdr_error;
4596
4597 if ((status = decode_attr_maxlink(xdr, bitmap, maxlink: &pathconf->max_link)) != 0)
4598 goto xdr_error;
4599 if ((status = decode_attr_maxname(xdr, bitmap, maxname: &pathconf->max_namelen)) != 0)
4600 goto xdr_error;
4601
4602 status = verify_attr_len(xdr, savep, attrlen);
4603xdr_error:
4604 dprintk("%s: xdr returned %d!\n", __func__, -status);
4605 return status;
4606}
4607
4608static int decode_threshold_hint(struct xdr_stream *xdr,
4609 uint32_t *bitmap,
4610 uint64_t *res,
4611 uint32_t hint_bit)
4612{
4613 __be32 *p;
4614
4615 *res = 0;
4616 if (likely(bitmap[0] & hint_bit)) {
4617 p = xdr_inline_decode(xdr, nbytes: 8);
4618 if (unlikely(!p))
4619 return -EIO;
4620 xdr_decode_hyper(p, valp: res);
4621 }
4622 return 0;
4623}
4624
4625static int decode_first_threshold_item4(struct xdr_stream *xdr,
4626 struct nfs4_threshold *res)
4627{
4628 __be32 *p;
4629 unsigned int savep;
4630 uint32_t bitmap[3] = {0,}, attrlen;
4631 int status;
4632
4633 /* layout type */
4634 p = xdr_inline_decode(xdr, nbytes: 4);
4635 if (unlikely(!p))
4636 return -EIO;
4637 res->l_type = be32_to_cpup(p);
4638
4639 /* thi_hintset bitmap */
4640 status = decode_attr_bitmap(xdr, bitmap);
4641 if (status < 0)
4642 goto xdr_error;
4643
4644 /* thi_hintlist length */
4645 status = decode_attr_length(xdr, attrlen: &attrlen, savep: &savep);
4646 if (status < 0)
4647 goto xdr_error;
4648 /* thi_hintlist */
4649 status = decode_threshold_hint(xdr, bitmap, res: &res->rd_sz, THRESHOLD_RD);
4650 if (status < 0)
4651 goto xdr_error;
4652 status = decode_threshold_hint(xdr, bitmap, res: &res->wr_sz, THRESHOLD_WR);
4653 if (status < 0)
4654 goto xdr_error;
4655 status = decode_threshold_hint(xdr, bitmap, res: &res->rd_io_sz,
4656 THRESHOLD_RD_IO);
4657 if (status < 0)
4658 goto xdr_error;
4659 status = decode_threshold_hint(xdr, bitmap, res: &res->wr_io_sz,
4660 THRESHOLD_WR_IO);
4661 if (status < 0)
4662 goto xdr_error;
4663
4664 status = verify_attr_len(xdr, savep, attrlen);
4665 res->bm = bitmap[0];
4666
4667 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4668 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4669 res->wr_io_sz);
4670xdr_error:
4671 dprintk("%s ret=%d!\n", __func__, status);
4672 return status;
4673}
4674
4675/*
4676 * Thresholds on pNFS direct I/O vrs MDS I/O
4677 */
4678static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4679 uint32_t *bitmap,
4680 struct nfs4_threshold *res)
4681{
4682 __be32 *p;
4683 int status = 0;
4684 uint32_t num;
4685
4686 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4687 return -EIO;
4688 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4689 /* Did the server return an unrequested attribute? */
4690 if (unlikely(res == NULL))
4691 return -EREMOTEIO;
4692 p = xdr_inline_decode(xdr, nbytes: 4);
4693 if (unlikely(!p))
4694 return -EIO;
4695 num = be32_to_cpup(p);
4696 if (num == 0)
4697 return 0;
4698 if (num > 1)
4699 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4700 "drivers per filesystem not supported\n",
4701 __func__);
4702
4703 status = decode_first_threshold_item4(xdr, res);
4704 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4705 }
4706 return status;
4707}
4708
4709static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4710 struct nfs_fattr *fattr, struct nfs_fh *fh,
4711 struct nfs4_fs_locations *fs_loc, const struct nfs_server *server)
4712{
4713 int status;
4714 umode_t fmode = 0;
4715 uint32_t type;
4716 int32_t err;
4717
4718 status = decode_attr_type(xdr, bitmap, type: &type);
4719 if (status < 0)
4720 goto xdr_error;
4721 fattr->mode = 0;
4722 if (status != 0) {
4723 fattr->mode |= nfs_type2fmt[type];
4724 fattr->valid |= status;
4725 }
4726
4727 status = decode_attr_change(xdr, bitmap, change: &fattr->change_attr);
4728 if (status < 0)
4729 goto xdr_error;
4730 fattr->valid |= status;
4731
4732 status = decode_attr_size(xdr, bitmap, size: &fattr->size);
4733 if (status < 0)
4734 goto xdr_error;
4735 fattr->valid |= status;
4736
4737 status = decode_attr_fsid(xdr, bitmap, fsid: &fattr->fsid);
4738 if (status < 0)
4739 goto xdr_error;
4740 fattr->valid |= status;
4741
4742 err = 0;
4743 status = decode_attr_error(xdr, bitmap, res: &err);
4744 if (status < 0)
4745 goto xdr_error;
4746
4747 status = decode_attr_filehandle(xdr, bitmap, fh);
4748 if (status < 0)
4749 goto xdr_error;
4750
4751 status = decode_attr_fileid(xdr, bitmap, fileid: &fattr->fileid);
4752 if (status < 0)
4753 goto xdr_error;
4754 fattr->valid |= status;
4755
4756 status = decode_attr_fs_locations(xdr, bitmap, res: fs_loc);
4757 if (status < 0)
4758 goto xdr_error;
4759 fattr->valid |= status;
4760
4761 status = -EIO;
4762 if (unlikely(bitmap[0]))
4763 goto xdr_error;
4764
4765 status = decode_attr_mode(xdr, bitmap, mode: &fmode);
4766 if (status < 0)
4767 goto xdr_error;
4768 if (status != 0) {
4769 fattr->mode |= fmode;
4770 fattr->valid |= status;
4771 }
4772
4773 status = decode_attr_nlink(xdr, bitmap, nlink: &fattr->nlink);
4774 if (status < 0)
4775 goto xdr_error;
4776 fattr->valid |= status;
4777
4778 status = decode_attr_owner(xdr, bitmap, server, uid: &fattr->uid, owner_name: fattr->owner_name);
4779 if (status < 0)
4780 goto xdr_error;
4781 fattr->valid |= status;
4782
4783 status = decode_attr_group(xdr, bitmap, server, gid: &fattr->gid, group_name: fattr->group_name);
4784 if (status < 0)
4785 goto xdr_error;
4786 fattr->valid |= status;
4787
4788 status = decode_attr_rdev(xdr, bitmap, rdev: &fattr->rdev);
4789 if (status < 0)
4790 goto xdr_error;
4791 fattr->valid |= status;
4792
4793 status = decode_attr_space_used(xdr, bitmap, used: &fattr->du.nfs3.used);
4794 if (status < 0)
4795 goto xdr_error;
4796 fattr->valid |= status;
4797
4798 status = decode_attr_time_access(xdr, bitmap, time: &fattr->atime);
4799 if (status < 0)
4800 goto xdr_error;
4801 fattr->valid |= status;
4802
4803 status = decode_attr_time_create(xdr, bitmap, time: &fattr->btime);
4804 if (status < 0)
4805 goto xdr_error;
4806 fattr->valid |= status;
4807
4808 status = decode_attr_time_metadata(xdr, bitmap, time: &fattr->ctime);
4809 if (status < 0)
4810 goto xdr_error;
4811 fattr->valid |= status;
4812
4813 status = decode_attr_time_modify(xdr, bitmap, time: &fattr->mtime);
4814 if (status < 0)
4815 goto xdr_error;
4816 fattr->valid |= status;
4817
4818 status = decode_attr_mounted_on_fileid(xdr, bitmap, fileid: &fattr->mounted_on_fileid);
4819 if (status < 0)
4820 goto xdr_error;
4821 fattr->valid |= status;
4822
4823 status = -EIO;
4824 if (unlikely(bitmap[1]))
4825 goto xdr_error;
4826
4827 status = decode_attr_mdsthreshold(xdr, bitmap, res: fattr->mdsthreshold);
4828 if (status < 0)
4829 goto xdr_error;
4830
4831 status = decode_attr_security_label(xdr, bitmap, label: fattr->label);
4832 if (status < 0)
4833 goto xdr_error;
4834 fattr->valid |= status;
4835
4836xdr_error:
4837 dprintk("%s: xdr returned %d\n", __func__, -status);
4838 return status;
4839}
4840
4841static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4842 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4843 const struct nfs_server *server)
4844{
4845 unsigned int savep;
4846 uint32_t attrlen,
4847 bitmap[3] = {0};
4848 int status;
4849
4850 status = decode_op_hdr(xdr, expected: OP_GETATTR);
4851 if (status < 0)
4852 goto xdr_error;
4853
4854 status = decode_attr_bitmap(xdr, bitmap);
4855 if (status < 0)
4856 goto xdr_error;
4857
4858 status = decode_attr_length(xdr, attrlen: &attrlen, savep: &savep);
4859 if (status < 0)
4860 goto xdr_error;
4861
4862 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
4863 if (status < 0)
4864 goto xdr_error;
4865
4866 status = verify_attr_len(xdr, savep, attrlen);
4867xdr_error:
4868 dprintk("%s: xdr returned %d\n", __func__, -status);
4869 return status;
4870}
4871
4872static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4873 const struct nfs_server *server)
4874{
4875 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
4876}
4877
4878/*
4879 * Decode potentially multiple layout types.
4880 */
4881static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4882 struct nfs_fsinfo *fsinfo)
4883{
4884 __be32 *p;
4885 uint32_t i;
4886
4887 p = xdr_inline_decode(xdr, nbytes: 4);
4888 if (unlikely(!p))
4889 return -EIO;
4890 fsinfo->nlayouttypes = be32_to_cpup(p);
4891
4892 /* pNFS is not supported by the underlying file system */
4893 if (fsinfo->nlayouttypes == 0)
4894 return 0;
4895
4896 /* Decode and set first layout type, move xdr->p past unused types */
4897 p = xdr_inline_decode(xdr, nbytes: fsinfo->nlayouttypes * 4);
4898 if (unlikely(!p))
4899 return -EIO;
4900
4901 /* If we get too many, then just cap it at the max */
4902 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4903 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4904 __func__, fsinfo->nlayouttypes);
4905 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4906 }
4907
4908 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4909 fsinfo->layouttype[i] = be32_to_cpup(p: p++);
4910 return 0;
4911}
4912
4913/*
4914 * The type of file system exported.
4915 * Note we must ensure that layouttype is set in any non-error case.
4916 */
4917static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4918 struct nfs_fsinfo *fsinfo)
4919{
4920 int status = 0;
4921
4922 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4923 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4924 return -EIO;
4925 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4926 status = decode_pnfs_layout_types(xdr, fsinfo);
4927 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4928 }
4929 return status;
4930}
4931
4932/*
4933 * The preferred block size for layout directed io
4934 */
4935static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4936 uint32_t *res)
4937{
4938 __be32 *p;
4939
4940 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4941 *res = 0;
4942 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4943 p = xdr_inline_decode(xdr, nbytes: 4);
4944 if (unlikely(!p))
4945 return -EIO;
4946 *res = be32_to_cpup(p);
4947 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4948 }
4949 return 0;
4950}
4951
4952/*
4953 * The granularity of a CLONE operation.
4954 */
4955static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4956 uint32_t *res)
4957{
4958 __be32 *p;
4959
4960 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4961 *res = 0;
4962 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4963 p = xdr_inline_decode(xdr, nbytes: 4);
4964 if (unlikely(!p))
4965 return -EIO;
4966 *res = be32_to_cpup(p);
4967 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4968 }
4969 return 0;
4970}
4971
4972static int decode_attr_change_attr_type(struct xdr_stream *xdr,
4973 uint32_t *bitmap,
4974 enum nfs4_change_attr_type *res)
4975{
4976 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4977
4978 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4979 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) {
4980 if (xdr_stream_decode_u32(xdr, ptr: &tmp))
4981 return -EIO;
4982 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE;
4983 }
4984
4985 switch(tmp) {
4986 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR:
4987 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER:
4988 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS:
4989 case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
4990 *res = tmp;
4991 break;
4992 default:
4993 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED;
4994 }
4995 return 0;
4996}
4997
4998static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4999{
5000 unsigned int savep;
5001 uint32_t attrlen, bitmap[3];
5002 int status;
5003
5004 if ((status = decode_op_hdr(xdr, expected: OP_GETATTR)) != 0)
5005 goto xdr_error;
5006 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5007 goto xdr_error;
5008 if ((status = decode_attr_length(xdr, attrlen: &attrlen, savep: &savep)) != 0)
5009 goto xdr_error;
5010
5011 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
5012
5013 if ((status = decode_attr_lease_time(xdr, bitmap, res: &fsinfo->lease_time)) != 0)
5014 goto xdr_error;
5015 if ((status = decode_attr_maxfilesize(xdr, bitmap, res: &fsinfo->maxfilesize)) != 0)
5016 goto xdr_error;
5017 if ((status = decode_attr_maxread(xdr, bitmap, res: &fsinfo->rtmax)) != 0)
5018 goto xdr_error;
5019 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
5020 if ((status = decode_attr_maxwrite(xdr, bitmap, res: &fsinfo->wtmax)) != 0)
5021 goto xdr_error;
5022 fsinfo->wtpref = fsinfo->wtmax;
5023
5024 status = -EIO;
5025 if (unlikely(bitmap[0]))
5026 goto xdr_error;
5027
5028 status = decode_attr_time_delta(xdr, bitmap, time: &fsinfo->time_delta);
5029 if (status != 0)
5030 goto xdr_error;
5031 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
5032 if (status != 0)
5033 goto xdr_error;
5034
5035 status = -EIO;
5036 if (unlikely(bitmap[1]))
5037 goto xdr_error;
5038
5039 status = decode_attr_layout_blksize(xdr, bitmap, res: &fsinfo->blksize);
5040 if (status)
5041 goto xdr_error;
5042 status = decode_attr_clone_blksize(xdr, bitmap, res: &fsinfo->clone_blksize);
5043 if (status)
5044 goto xdr_error;
5045
5046 status = decode_attr_change_attr_type(xdr, bitmap,
5047 res: &fsinfo->change_attr_type);
5048 if (status)
5049 goto xdr_error;
5050
5051 status = decode_attr_xattrsupport(xdr, bitmap,
5052 res: &fsinfo->xattr_support);
5053 if (status)
5054 goto xdr_error;
5055
5056 status = verify_attr_len(xdr, savep, attrlen);
5057xdr_error:
5058 dprintk("%s: xdr returned %d!\n", __func__, -status);
5059 return status;
5060}
5061
5062static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
5063{
5064 __be32 *p;
5065 uint32_t len;
5066 int status;
5067
5068 /* Zero handle first to allow comparisons */
5069 memset(s: fh, c: 0, n: sizeof(*fh));
5070
5071 status = decode_op_hdr(xdr, expected: OP_GETFH);
5072 if (status)
5073 return status;
5074
5075 p = xdr_inline_decode(xdr, nbytes: 4);
5076 if (unlikely(!p))
5077 return -EIO;
5078 len = be32_to_cpup(p);
5079 if (len > NFS4_FHSIZE || len == 0) {
5080 trace_nfs4_xdr_bad_filehandle(xdr, op: OP_GETFH, error: NFS4ERR_BADHANDLE);
5081 return -EREMOTEIO;
5082 }
5083 fh->size = len;
5084 p = xdr_inline_decode(xdr, nbytes: len);
5085 if (unlikely(!p))
5086 return -EIO;
5087 memcpy(to: fh->data, from: p, len);
5088 return 0;
5089}
5090
5091static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5092{
5093 int status;
5094
5095 status = decode_op_hdr(xdr, expected: OP_LINK);
5096 if (status)
5097 return status;
5098 return decode_change_info(xdr, cinfo);
5099}
5100
5101/*
5102 * We create the owner, so we know a proper owner.id length is 4.
5103 */
5104static int decode_lock_denied(struct xdr_stream *xdr, struct file_lock *fl)
5105{
5106 uint64_t offset, length, clientid;
5107 __be32 *p;
5108 uint32_t namelen, type;
5109
5110 p = xdr_inline_decode(xdr, nbytes: 32); /* read 32 bytes */
5111 if (unlikely(!p))
5112 return -EIO;
5113 p = xdr_decode_hyper(p, valp: &offset); /* read 2 8-byte long words */
5114 p = xdr_decode_hyper(p, valp: &length);
5115 type = be32_to_cpup(p: p++); /* 4 byte read */
5116 if (fl != NULL) { /* manipulate file lock */
5117 fl->fl_start = (loff_t)offset;
5118 fl->fl_end = fl->fl_start + (loff_t)length - 1;
5119 if (length == ~(uint64_t)0)
5120 fl->fl_end = OFFSET_MAX;
5121 fl->c.flc_type = F_WRLCK;
5122 if (type & 1)
5123 fl->c.flc_type = F_RDLCK;
5124 fl->c.flc_pid = 0;
5125 }
5126 p = xdr_decode_hyper(p, valp: &clientid); /* read 8 bytes */
5127 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5128 p = xdr_inline_decode(xdr, nbytes: namelen); /* variable size field */
5129 if (likely(!p))
5130 return -EIO;
5131 return -NFS4ERR_DENIED;
5132}
5133
5134static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5135{
5136 int status;
5137
5138 status = decode_op_hdr(xdr, expected: OP_LOCK);
5139 if (status == -EIO)
5140 goto out;
5141 if (status == 0) {
5142 status = decode_lock_stateid(xdr, stateid: &res->stateid);
5143 if (unlikely(status))
5144 goto out;
5145 } else if (status == -NFS4ERR_DENIED)
5146 status = decode_lock_denied(xdr, NULL);
5147 if (res->open_seqid != NULL)
5148 nfs_increment_open_seqid(status, seqid: res->open_seqid);
5149 nfs_increment_lock_seqid(status, seqid: res->lock_seqid);
5150out:
5151 return status;
5152}
5153
5154static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5155{
5156 int status;
5157 status = decode_op_hdr(xdr, expected: OP_LOCKT);
5158 if (status == -NFS4ERR_DENIED)
5159 return decode_lock_denied(xdr, fl: res->denied);
5160 return status;
5161}
5162
5163static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5164{
5165 int status;
5166
5167 status = decode_op_hdr(xdr, expected: OP_LOCKU);
5168 if (status != -EIO)
5169 nfs_increment_lock_seqid(status, seqid: res->seqid);
5170 if (status == 0)
5171 status = decode_lock_stateid(xdr, stateid: &res->stateid);
5172 return status;
5173}
5174
5175static int decode_release_lockowner(struct xdr_stream *xdr)
5176{
5177 return decode_op_hdr(xdr, expected: OP_RELEASE_LOCKOWNER);
5178}
5179
5180static int decode_lookup(struct xdr_stream *xdr)
5181{
5182 return decode_op_hdr(xdr, expected: OP_LOOKUP);
5183}
5184
5185static int decode_lookupp(struct xdr_stream *xdr)
5186{
5187 return decode_op_hdr(xdr, expected: OP_LOOKUPP);
5188}
5189
5190/* This is too sick! */
5191static int decode_space_limit(struct xdr_stream *xdr,
5192 unsigned long *pagemod_limit)
5193{
5194 __be32 *p;
5195 uint32_t limit_type, nblocks, blocksize;
5196 u64 maxsize = 0;
5197
5198 p = xdr_inline_decode(xdr, nbytes: 12);
5199 if (unlikely(!p))
5200 return -EIO;
5201 limit_type = be32_to_cpup(p: p++);
5202 switch (limit_type) {
5203 case NFS4_LIMIT_SIZE:
5204 xdr_decode_hyper(p, valp: &maxsize);
5205 break;
5206 case NFS4_LIMIT_BLOCKS:
5207 nblocks = be32_to_cpup(p: p++);
5208 blocksize = be32_to_cpup(p);
5209 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5210 }
5211 maxsize >>= PAGE_SHIFT;
5212 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5213 return 0;
5214}
5215
5216static int decode_rw_delegation(struct xdr_stream *xdr,
5217 struct nfs4_open_delegation *res)
5218{
5219 __be32 *p;
5220 int status;
5221
5222 status = decode_delegation_stateid(xdr, stateid: &res->stateid);
5223 if (unlikely(status))
5224 return status;
5225 p = xdr_inline_decode(xdr, nbytes: 4);
5226 if (unlikely(!p))
5227 return -EIO;
5228 res->do_recall = be32_to_cpup(p);
5229
5230 switch (res->open_delegation_type) {
5231 case NFS4_OPEN_DELEGATE_READ:
5232 case NFS4_OPEN_DELEGATE_READ_ATTRS_DELEG:
5233 res->type = FMODE_READ;
5234 break;
5235 case NFS4_OPEN_DELEGATE_WRITE:
5236 case NFS4_OPEN_DELEGATE_WRITE_ATTRS_DELEG:
5237 res->type = FMODE_WRITE|FMODE_READ;
5238 if (decode_space_limit(xdr, pagemod_limit: &res->pagemod_limit) < 0)
5239 return -EIO;
5240 }
5241 return decode_ace(xdr, NULL);
5242}
5243
5244static int decode_no_delegation(struct xdr_stream *xdr,
5245 struct nfs4_open_delegation *res)
5246{
5247 __be32 *p;
5248
5249 p = xdr_inline_decode(xdr, nbytes: 4);
5250 if (unlikely(!p))
5251 return -EIO;
5252 res->why_no_delegation = be32_to_cpup(p);
5253 switch (res->why_no_delegation) {
5254 case WND4_CONTENTION:
5255 case WND4_RESOURCE:
5256 p = xdr_inline_decode(xdr, nbytes: 4);
5257 if (unlikely(!p))
5258 return -EIO;
5259 res->will_notify = be32_to_cpup(p);
5260 }
5261 return 0;
5262}
5263
5264static int decode_delegation(struct xdr_stream *xdr,
5265 struct nfs4_open_delegation *res)
5266{
5267 __be32 *p;
5268
5269 p = xdr_inline_decode(xdr, nbytes: 4);
5270 if (unlikely(!p))
5271 return -EIO;
5272 res->open_delegation_type = be32_to_cpup(p);
5273 switch (res->open_delegation_type) {
5274 case NFS4_OPEN_DELEGATE_NONE:
5275 return 0;
5276 case NFS4_OPEN_DELEGATE_READ:
5277 case NFS4_OPEN_DELEGATE_WRITE:
5278 case NFS4_OPEN_DELEGATE_READ_ATTRS_DELEG:
5279 case NFS4_OPEN_DELEGATE_WRITE_ATTRS_DELEG:
5280 return decode_rw_delegation(xdr, res);
5281 case NFS4_OPEN_DELEGATE_NONE_EXT:
5282 return decode_no_delegation(xdr, res);
5283 }
5284 return -EIO;
5285}
5286
5287static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5288{
5289 __be32 *p;
5290 uint32_t savewords, bmlen, i;
5291 int status;
5292
5293 if (!__decode_op_hdr(xdr, expected: OP_OPEN, nfs_retval: &status))
5294 return status;
5295 nfs_increment_open_seqid(status, seqid: res->seqid);
5296 if (status)
5297 return status;
5298 status = decode_open_stateid(xdr, stateid: &res->stateid);
5299 if (unlikely(status))
5300 return status;
5301
5302 decode_change_info(xdr, cinfo: &res->cinfo);
5303
5304 p = xdr_inline_decode(xdr, nbytes: 8);
5305 if (unlikely(!p))
5306 return -EIO;
5307 res->rflags = be32_to_cpup(p: p++);
5308 bmlen = be32_to_cpup(p);
5309 if (bmlen > 10)
5310 goto xdr_error;
5311
5312 p = xdr_inline_decode(xdr, nbytes: bmlen << 2);
5313 if (unlikely(!p))
5314 return -EIO;
5315 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5316 for (i = 0; i < savewords; ++i)
5317 res->attrset[i] = be32_to_cpup(p: p++);
5318 for (; i < NFS4_BITMAP_SIZE; i++)
5319 res->attrset[i] = 0;
5320
5321 return decode_delegation(xdr, res: &res->delegation);
5322xdr_error:
5323 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5324 return -EIO;
5325}
5326
5327static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5328{
5329 int status;
5330
5331 status = decode_op_hdr(xdr, expected: OP_OPEN_CONFIRM);
5332 if (status != -EIO)
5333 nfs_increment_open_seqid(status, seqid: res->seqid);
5334 if (!status)
5335 status = decode_open_stateid(xdr, stateid: &res->stateid);
5336 return status;
5337}
5338
5339static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5340{
5341 int status;
5342
5343 status = decode_op_hdr(xdr, expected: OP_OPEN_DOWNGRADE);
5344 if (status != -EIO)
5345 nfs_increment_open_seqid(status, seqid: res->seqid);
5346 if (!status)
5347 status = decode_open_stateid(xdr, stateid: &res->stateid);
5348 return status;
5349}
5350
5351static int decode_putfh(struct xdr_stream *xdr)
5352{
5353 return decode_op_hdr(xdr, expected: OP_PUTFH);
5354}
5355
5356static int decode_putrootfh(struct xdr_stream *xdr)
5357{
5358 return decode_op_hdr(xdr, expected: OP_PUTROOTFH);
5359}
5360
5361static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5362 struct nfs_pgio_res *res)
5363{
5364 __be32 *p;
5365 uint32_t count, eof, recvd;
5366 int status;
5367
5368 status = decode_op_hdr(xdr, expected: OP_READ);
5369 if (status)
5370 return status;
5371 p = xdr_inline_decode(xdr, nbytes: 8);
5372 if (unlikely(!p))
5373 return -EIO;
5374 eof = be32_to_cpup(p: p++);
5375 count = be32_to_cpup(p);
5376 recvd = xdr_read_pages(xdr, len: count);
5377 if (count > recvd) {
5378 dprintk("NFS: server cheating in read reply: "
5379 "count %u > recvd %u\n", count, recvd);
5380 count = recvd;
5381 eof = 0;
5382 }
5383 res->eof = eof;
5384 res->count = count;
5385 return 0;
5386}
5387
5388static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5389{
5390 int status;
5391 __be32 verf[2];
5392
5393 status = decode_op_hdr(xdr, expected: OP_READDIR);
5394 if (!status)
5395 status = decode_verifier(xdr, verifier: readdir->verifier.data);
5396 if (unlikely(status))
5397 return status;
5398 memcpy(to: verf, from: readdir->verifier.data, len: sizeof(verf));
5399 dprintk("%s: verifier = %08x:%08x\n",
5400 __func__, verf[0], verf[1]);
5401 return xdr_read_pages(xdr, len: xdr->buf->page_len);
5402}
5403
5404static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5405{
5406 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5407 u32 len, recvd;
5408 __be32 *p;
5409 int status;
5410
5411 status = decode_op_hdr(xdr, expected: OP_READLINK);
5412 if (status)
5413 return status;
5414
5415 /* Convert length of symlink */
5416 p = xdr_inline_decode(xdr, nbytes: 4);
5417 if (unlikely(!p))
5418 return -EIO;
5419 len = be32_to_cpup(p);
5420 if (len >= rcvbuf->page_len || len <= 0) {
5421 dprintk("nfs: server returned giant symlink!\n");
5422 return -ENAMETOOLONG;
5423 }
5424 recvd = xdr_read_pages(xdr, len);
5425 if (recvd < len) {
5426 dprintk("NFS: server cheating in readlink reply: "
5427 "count %u > recvd %u\n", len, recvd);
5428 return -EIO;
5429 }
5430 /*
5431 * The XDR encode routine has set things up so that
5432 * the link text will be copied directly into the
5433 * buffer. We just have to do overflow-checking,
5434 * and null-terminate the text (the VFS expects
5435 * null-termination).
5436 */
5437 xdr_terminate_string(rcvbuf, len);
5438 return 0;
5439}
5440
5441static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5442{
5443 int status;
5444
5445 status = decode_op_hdr(xdr, expected: OP_REMOVE);
5446 if (status)
5447 goto out;
5448 status = decode_change_info(xdr, cinfo);
5449out:
5450 return status;
5451}
5452
5453static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5454 struct nfs4_change_info *new_cinfo)
5455{
5456 int status;
5457
5458 status = decode_op_hdr(xdr, expected: OP_RENAME);
5459 if (status)
5460 goto out;
5461 if ((status = decode_change_info(xdr, cinfo: old_cinfo)))
5462 goto out;
5463 status = decode_change_info(xdr, cinfo: new_cinfo);
5464out:
5465 return status;
5466}
5467
5468static int decode_renew(struct xdr_stream *xdr)
5469{
5470 return decode_op_hdr(xdr, expected: OP_RENEW);
5471}
5472
5473static int
5474decode_restorefh(struct xdr_stream *xdr)
5475{
5476 return decode_op_hdr(xdr, expected: OP_RESTOREFH);
5477}
5478
5479static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5480 struct nfs_getaclres *res, enum nfs4_acl_type type)
5481{
5482 unsigned int savep;
5483 uint32_t attrlen,
5484 bitmap[3] = {0};
5485 int status;
5486
5487 res->acl_len = 0;
5488 if ((status = decode_op_hdr(xdr, expected: OP_GETATTR)) != 0)
5489 goto out;
5490
5491 xdr_enter_page(xdr, len: xdr->buf->page_len);
5492
5493 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5494 goto out;
5495 if ((status = decode_attr_length(xdr, attrlen: &attrlen, savep: &savep)) != 0)
5496 goto out;
5497
5498 switch (type) {
5499 default:
5500 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5501 return -EIO;
5502 if (!(bitmap[0] & FATTR4_WORD0_ACL))
5503 return -EOPNOTSUPP;
5504 break;
5505 case NFS4ACL_DACL:
5506 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_DACL - 1U)))
5507 return -EIO;
5508 if (!(bitmap[1] & FATTR4_WORD1_DACL))
5509 return -EOPNOTSUPP;
5510 break;
5511 case NFS4ACL_SACL:
5512 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_SACL - 1U)))
5513 return -EIO;
5514 if (!(bitmap[1] & FATTR4_WORD1_SACL))
5515 return -EOPNOTSUPP;
5516 }
5517
5518 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5519 * are stored with the acl data to handle the problem of
5520 * variable length bitmaps.*/
5521 res->acl_data_offset = xdr_page_pos(xdr);
5522 res->acl_len = attrlen;
5523
5524 /* Check for receive buffer overflow */
5525 if (res->acl_len > xdr_stream_remaining(xdr) ||
5526 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5527 res->acl_flags |= NFS4_ACL_TRUNC;
5528 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
5529 attrlen, xdr_stream_remaining(xdr));
5530 }
5531out:
5532 return status;
5533}
5534
5535static int
5536decode_savefh(struct xdr_stream *xdr)
5537{
5538 return decode_op_hdr(xdr, expected: OP_SAVEFH);
5539}
5540
5541static int decode_setattr(struct xdr_stream *xdr)
5542{
5543 int status;
5544
5545 status = decode_op_hdr(xdr, expected: OP_SETATTR);
5546 if (status)
5547 return status;
5548 if (decode_bitmap4(xdr, NULL, sz: 0) >= 0)
5549 return 0;
5550 return -EIO;
5551}
5552
5553static int decode_delegattr(struct xdr_stream *xdr)
5554{
5555 return decode_setattr(xdr);
5556}
5557
5558static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5559{
5560 __be32 *p;
5561 uint32_t opnum;
5562 int32_t nfserr;
5563
5564 p = xdr_inline_decode(xdr, nbytes: 8);
5565 if (unlikely(!p))
5566 return -EIO;
5567 opnum = be32_to_cpup(p: p++);
5568 if (opnum != OP_SETCLIENTID) {
5569 dprintk("nfs: decode_setclientid: Server returned operation"
5570 " %d\n", opnum);
5571 return -EIO;
5572 }
5573 nfserr = be32_to_cpup(p);
5574 if (nfserr == NFS_OK) {
5575 p = xdr_inline_decode(xdr, nbytes: 8 + NFS4_VERIFIER_SIZE);
5576 if (unlikely(!p))
5577 return -EIO;
5578 p = xdr_decode_hyper(p, valp: &res->clientid);
5579 memcpy(to: res->confirm.data, from: p, NFS4_VERIFIER_SIZE);
5580 } else if (nfserr == NFSERR_CLID_INUSE) {
5581 uint32_t len;
5582
5583 /* skip netid string */
5584 p = xdr_inline_decode(xdr, nbytes: 4);
5585 if (unlikely(!p))
5586 return -EIO;
5587 len = be32_to_cpup(p);
5588 p = xdr_inline_decode(xdr, nbytes: len);
5589 if (unlikely(!p))
5590 return -EIO;
5591
5592 /* skip uaddr string */
5593 p = xdr_inline_decode(xdr, nbytes: 4);
5594 if (unlikely(!p))
5595 return -EIO;
5596 len = be32_to_cpup(p);
5597 p = xdr_inline_decode(xdr, nbytes: len);
5598 if (unlikely(!p))
5599 return -EIO;
5600 return -NFSERR_CLID_INUSE;
5601 } else
5602 return nfs4_stat_to_errno(stat: nfserr);
5603
5604 return 0;
5605}
5606
5607static int decode_setclientid_confirm(struct xdr_stream *xdr)
5608{
5609 return decode_op_hdr(xdr, expected: OP_SETCLIENTID_CONFIRM);
5610}
5611
5612static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5613{
5614 __be32 *p;
5615 int status;
5616
5617 status = decode_op_hdr(xdr, expected: OP_WRITE);
5618 if (status)
5619 return status;
5620
5621 p = xdr_inline_decode(xdr, nbytes: 8);
5622 if (unlikely(!p))
5623 return -EIO;
5624 res->count = be32_to_cpup(p: p++);
5625 res->verf->committed = be32_to_cpup(p: p++);
5626 return decode_write_verifier(xdr, verifier: &res->verf->verifier);
5627}
5628
5629static int decode_delegreturn(struct xdr_stream *xdr)
5630{
5631 return decode_op_hdr(xdr, expected: OP_DELEGRETURN);
5632}
5633
5634static int decode_secinfo_gss(struct xdr_stream *xdr,
5635 struct nfs4_secinfo4 *flavor)
5636{
5637 u32 oid_len;
5638 __be32 *p;
5639
5640 p = xdr_inline_decode(xdr, nbytes: 4);
5641 if (unlikely(!p))
5642 return -EIO;
5643 oid_len = be32_to_cpup(p);
5644 if (oid_len > GSS_OID_MAX_LEN)
5645 return -EINVAL;
5646
5647 p = xdr_inline_decode(xdr, nbytes: oid_len);
5648 if (unlikely(!p))
5649 return -EIO;
5650 memcpy(to: flavor->flavor_info.oid.data, from: p, len: oid_len);
5651 flavor->flavor_info.oid.len = oid_len;
5652
5653 p = xdr_inline_decode(xdr, nbytes: 8);
5654 if (unlikely(!p))
5655 return -EIO;
5656 flavor->flavor_info.qop = be32_to_cpup(p: p++);
5657 flavor->flavor_info.service = be32_to_cpup(p);
5658
5659 return 0;
5660}
5661
5662static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5663{
5664 struct nfs4_secinfo4 *sec_flavor;
5665 unsigned int i, num_flavors;
5666 int status;
5667 __be32 *p;
5668
5669 p = xdr_inline_decode(xdr, nbytes: 4);
5670 if (unlikely(!p))
5671 return -EIO;
5672
5673 res->flavors->num_flavors = 0;
5674 num_flavors = be32_to_cpup(p);
5675
5676 for (i = 0; i < num_flavors; i++) {
5677 sec_flavor = &res->flavors->flavors[i];
5678 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5679 break;
5680
5681 p = xdr_inline_decode(xdr, nbytes: 4);
5682 if (unlikely(!p))
5683 return -EIO;
5684 sec_flavor->flavor = be32_to_cpup(p);
5685
5686 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5687 status = decode_secinfo_gss(xdr, flavor: sec_flavor);
5688 if (status)
5689 goto out;
5690 }
5691 res->flavors->num_flavors++;
5692 }
5693
5694 status = 0;
5695out:
5696 return status;
5697}
5698
5699static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5700{
5701 int status = decode_op_hdr(xdr, expected: OP_SECINFO);
5702 if (status)
5703 return status;
5704 return decode_secinfo_common(xdr, res);
5705}
5706
5707#if defined(CONFIG_NFS_V4_1)
5708static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5709{
5710 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5711 if (status)
5712 return status;
5713 return decode_secinfo_common(xdr, res);
5714}
5715
5716static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5717{
5718 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words,
5719 ARRAY_SIZE(op_map->u.words)) < 0)
5720 return -EIO;
5721 return 0;
5722}
5723
5724static int decode_exchange_id(struct xdr_stream *xdr,
5725 struct nfs41_exchange_id_res *res)
5726{
5727 __be32 *p;
5728 uint32_t dummy;
5729 char *dummy_str;
5730 int status;
5731 uint32_t impl_id_count;
5732
5733 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5734 if (status)
5735 return status;
5736
5737 p = xdr_inline_decode(xdr, 8);
5738 if (unlikely(!p))
5739 return -EIO;
5740 xdr_decode_hyper(p, &res->clientid);
5741 p = xdr_inline_decode(xdr, 12);
5742 if (unlikely(!p))
5743 return -EIO;
5744 res->seqid = be32_to_cpup(p++);
5745 res->flags = be32_to_cpup(p++);
5746
5747 res->state_protect.how = be32_to_cpup(p);
5748 switch (res->state_protect.how) {
5749 case SP4_NONE:
5750 break;
5751 case SP4_MACH_CRED:
5752 status = decode_op_map(xdr, &res->state_protect.enforce);
5753 if (status)
5754 return status;
5755 status = decode_op_map(xdr, &res->state_protect.allow);
5756 if (status)
5757 return status;
5758 break;
5759 default:
5760 WARN_ON_ONCE(1);
5761 return -EIO;
5762 }
5763
5764 /* server_owner4.so_minor_id */
5765 p = xdr_inline_decode(xdr, 8);
5766 if (unlikely(!p))
5767 return -EIO;
5768 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5769
5770 /* server_owner4.so_major_id */
5771 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5772 if (unlikely(status))
5773 return status;
5774 memcpy(res->server_owner->major_id, dummy_str, dummy);
5775 res->server_owner->major_id_sz = dummy;
5776
5777 /* server_scope4 */
5778 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5779 if (unlikely(status))
5780 return status;
5781 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5782 res->server_scope->server_scope_sz = dummy;
5783
5784 /* Implementation Id */
5785 p = xdr_inline_decode(xdr, 4);
5786 if (unlikely(!p))
5787 return -EIO;
5788 impl_id_count = be32_to_cpup(p++);
5789
5790 if (impl_id_count) {
5791 /* nii_domain */
5792 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5793 if (unlikely(status))
5794 return status;
5795 memcpy(res->impl_id->domain, dummy_str, dummy);
5796
5797 /* nii_name */
5798 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5799 if (unlikely(status))
5800 return status;
5801 memcpy(res->impl_id->name, dummy_str, dummy);
5802
5803 /* nii_date */
5804 p = xdr_inline_decode(xdr, 12);
5805 if (unlikely(!p))
5806 return -EIO;
5807 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5808 res->impl_id->date.nseconds = be32_to_cpup(p);
5809
5810 /* if there's more than one entry, ignore the rest */
5811 }
5812 return 0;
5813}
5814
5815static int decode_chan_attrs(struct xdr_stream *xdr,
5816 struct nfs4_channel_attrs *attrs)
5817{
5818 __be32 *p;
5819 u32 nr_attrs, val;
5820
5821 p = xdr_inline_decode(xdr, 28);
5822 if (unlikely(!p))
5823 return -EIO;
5824 val = be32_to_cpup(p++); /* headerpadsz */
5825 if (val)
5826 return -EINVAL; /* no support for header padding yet */
5827 attrs->max_rqst_sz = be32_to_cpup(p++);
5828 attrs->max_resp_sz = be32_to_cpup(p++);
5829 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5830 attrs->max_ops = be32_to_cpup(p++);
5831 attrs->max_reqs = be32_to_cpup(p++);
5832 nr_attrs = be32_to_cpup(p);
5833 if (unlikely(nr_attrs > 1)) {
5834 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5835 "count %u\n", __func__, nr_attrs);
5836 return -EINVAL;
5837 }
5838 if (nr_attrs == 1) {
5839 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5840 if (unlikely(!p))
5841 return -EIO;
5842 }
5843 return 0;
5844}
5845
5846static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5847{
5848 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5849}
5850
5851static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5852 struct nfs41_bind_conn_to_session_res *res)
5853{
5854 __be32 *p;
5855 int status;
5856
5857 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5858 if (!status)
5859 status = decode_sessionid(xdr, &res->sessionid);
5860 if (unlikely(status))
5861 return status;
5862
5863 /* dir flags, rdma mode bool */
5864 p = xdr_inline_decode(xdr, 8);
5865 if (unlikely(!p))
5866 return -EIO;
5867
5868 res->dir = be32_to_cpup(p++);
5869 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5870 return -EIO;
5871 if (be32_to_cpup(p) == 0)
5872 res->use_conn_in_rdma_mode = false;
5873 else
5874 res->use_conn_in_rdma_mode = true;
5875
5876 return 0;
5877}
5878
5879static int decode_create_session(struct xdr_stream *xdr,
5880 struct nfs41_create_session_res *res)
5881{
5882 __be32 *p;
5883 int status;
5884
5885 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5886 if (!status)
5887 status = decode_sessionid(xdr, &res->sessionid);
5888 if (unlikely(status))
5889 return status;
5890
5891 /* seqid, flags */
5892 p = xdr_inline_decode(xdr, 8);
5893 if (unlikely(!p))
5894 return -EIO;
5895 res->seqid = be32_to_cpup(p++);
5896 res->flags = be32_to_cpup(p);
5897
5898 /* Channel attributes */
5899 status = decode_chan_attrs(xdr, &res->fc_attrs);
5900 if (!status)
5901 status = decode_chan_attrs(xdr, &res->bc_attrs);
5902 return status;
5903}
5904
5905static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5906{
5907 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5908}
5909
5910static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5911{
5912 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5913}
5914
5915static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5916{
5917 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5918}
5919#endif /* CONFIG_NFS_V4_1 */
5920
5921static int decode_sequence(struct xdr_stream *xdr,
5922 struct nfs4_sequence_res *res,
5923 struct rpc_rqst *rqstp)
5924{
5925#if defined(CONFIG_NFS_V4_1)
5926 struct nfs4_session *session;
5927 struct nfs4_sessionid id;
5928 u32 dummy;
5929 int status;
5930 __be32 *p;
5931
5932 if (res->sr_slot == NULL)
5933 return 0;
5934 if (!res->sr_slot->table->session)
5935 return 0;
5936
5937 status = decode_op_hdr(xdr, OP_SEQUENCE);
5938 if (!status)
5939 status = decode_sessionid(xdr, &id);
5940 if (unlikely(status))
5941 goto out_err;
5942
5943 /*
5944 * If the server returns different values for sessionID, slotID or
5945 * sequence number, the server is looney tunes.
5946 */
5947 status = -EREMOTEIO;
5948 session = res->sr_slot->table->session;
5949
5950 if (memcmp(id.data, session->sess_id.data,
5951 NFS4_MAX_SESSIONID_LEN)) {
5952 dprintk("%s Invalid session id\n", __func__);
5953 goto out_err;
5954 }
5955
5956 p = xdr_inline_decode(xdr, 20);
5957 if (unlikely(!p))
5958 goto out_overflow;
5959
5960 /* seqid */
5961 dummy = be32_to_cpup(p++);
5962 if (dummy != res->sr_slot->seq_nr) {
5963 dprintk("%s Invalid sequence number\n", __func__);
5964 goto out_err;
5965 }
5966 /* slot id */
5967 dummy = be32_to_cpup(p++);
5968 if (dummy != res->sr_slot->slot_nr) {
5969 dprintk("%s Invalid slot id\n", __func__);
5970 goto out_err;
5971 }
5972 /* highest slot id */
5973 res->sr_highest_slotid = be32_to_cpup(p++);
5974 /* target highest slot id */
5975 res->sr_target_highest_slotid = be32_to_cpup(p++);
5976 /* result flags */
5977 res->sr_status_flags = be32_to_cpup(p);
5978 status = 0;
5979out_err:
5980 res->sr_status = status;
5981 return status;
5982out_overflow:
5983 status = -EIO;
5984 goto out_err;
5985#else /* CONFIG_NFS_V4_1 */
5986 return 0;
5987#endif /* CONFIG_NFS_V4_1 */
5988}
5989
5990#if defined(CONFIG_NFS_V4_1)
5991static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5992{
5993 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5994 return decode_stateid(xdr, stateid);
5995}
5996
5997static int decode_getdeviceinfo(struct xdr_stream *xdr,
5998 struct nfs4_getdeviceinfo_res *res)
5999{
6000 struct pnfs_device *pdev = res->pdev;
6001 __be32 *p;
6002 uint32_t len, type;
6003 int status;
6004
6005 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
6006 if (status) {
6007 if (status == -ETOOSMALL) {
6008 p = xdr_inline_decode(xdr, 4);
6009 if (unlikely(!p))
6010 return -EIO;
6011 pdev->mincount = be32_to_cpup(p);
6012 dprintk("%s: Min count too small. mincnt = %u\n",
6013 __func__, pdev->mincount);
6014 }
6015 return status;
6016 }
6017
6018 p = xdr_inline_decode(xdr, 8);
6019 if (unlikely(!p))
6020 return -EIO;
6021 type = be32_to_cpup(p++);
6022 if (type != pdev->layout_type) {
6023 dprintk("%s: layout mismatch req: %u pdev: %u\n",
6024 __func__, pdev->layout_type, type);
6025 return -EINVAL;
6026 }
6027 /*
6028 * Get the length of the opaque device_addr4. xdr_read_pages places
6029 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
6030 * and places the remaining xdr data in xdr_buf->tail
6031 */
6032 pdev->mincount = be32_to_cpup(p);
6033 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
6034 return -EIO;
6035
6036 /* Parse notification bitmap, verifying that it is zero. */
6037 p = xdr_inline_decode(xdr, 4);
6038 if (unlikely(!p))
6039 return -EIO;
6040 len = be32_to_cpup(p);
6041 if (len) {
6042 uint32_t i;
6043
6044 p = xdr_inline_decode(xdr, 4 * len);
6045 if (unlikely(!p))
6046 return -EIO;
6047
6048 res->notification = be32_to_cpup(p++);
6049 for (i = 1; i < len; i++) {
6050 if (be32_to_cpup(p++)) {
6051 dprintk("%s: unsupported notification\n",
6052 __func__);
6053 return -EIO;
6054 }
6055 }
6056 }
6057 return 0;
6058}
6059
6060static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6061 struct nfs4_layoutget_res *res)
6062{
6063 __be32 *p;
6064 int status;
6065 u32 layout_count;
6066 u32 recvd;
6067
6068 status = decode_op_hdr(xdr, OP_LAYOUTGET);
6069 if (status)
6070 goto out;
6071 p = xdr_inline_decode(xdr, 4);
6072 if (unlikely(!p))
6073 goto out_overflow;
6074 res->return_on_close = be32_to_cpup(p);
6075 decode_layout_stateid(xdr, &res->stateid);
6076 p = xdr_inline_decode(xdr, 4);
6077 if (unlikely(!p))
6078 goto out_overflow;
6079 layout_count = be32_to_cpup(p);
6080 if (!layout_count) {
6081 dprintk("%s: server responded with empty layout array\n",
6082 __func__);
6083 status = -EINVAL;
6084 goto out;
6085 }
6086
6087 p = xdr_inline_decode(xdr, 28);
6088 if (unlikely(!p))
6089 goto out_overflow;
6090 p = xdr_decode_hyper(p, &res->range.offset);
6091 p = xdr_decode_hyper(p, &res->range.length);
6092 res->range.iomode = be32_to_cpup(p++);
6093 res->type = be32_to_cpup(p++);
6094 res->layoutp->len = be32_to_cpup(p);
6095
6096 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
6097 __func__,
6098 (unsigned long)res->range.offset,
6099 (unsigned long)res->range.length,
6100 res->range.iomode,
6101 res->type,
6102 res->layoutp->len);
6103
6104 recvd = xdr_read_pages(xdr, res->layoutp->len);
6105 if (res->layoutp->len > recvd) {
6106 dprintk("NFS: server cheating in layoutget reply: "
6107 "layout len %u > recvd %u\n",
6108 res->layoutp->len, recvd);
6109 status = -EINVAL;
6110 goto out;
6111 }
6112
6113 if (layout_count > 1) {
6114 /* We only handle a length one array at the moment. Any
6115 * further entries are just ignored. Note that this means
6116 * the client may see a response that is less than the
6117 * minimum it requested.
6118 */
6119 dprintk("%s: server responded with %d layouts, dropping tail\n",
6120 __func__, layout_count);
6121 }
6122
6123out:
6124 res->status = status;
6125 return status;
6126out_overflow:
6127 status = -EIO;
6128 goto out;
6129}
6130
6131static int decode_layoutreturn(struct xdr_stream *xdr,
6132 struct nfs4_layoutreturn_res *res)
6133{
6134 __be32 *p;
6135 int status;
6136
6137 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6138 if (status)
6139 return status;
6140 p = xdr_inline_decode(xdr, 4);
6141 if (unlikely(!p))
6142 return -EIO;
6143 res->lrs_present = be32_to_cpup(p);
6144 if (res->lrs_present)
6145 status = decode_layout_stateid(xdr, &res->stateid);
6146 else
6147 nfs4_stateid_copy(&res->stateid, &invalid_stateid);
6148 return status;
6149}
6150
6151static int decode_layoutcommit(struct xdr_stream *xdr,
6152 struct rpc_rqst *req,
6153 struct nfs4_layoutcommit_res *res)
6154{
6155 __be32 *p;
6156 __u32 sizechanged;
6157 int status;
6158
6159 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6160 res->status = status;
6161 if (status)
6162 return status;
6163
6164 p = xdr_inline_decode(xdr, 4);
6165 if (unlikely(!p))
6166 return -EIO;
6167 sizechanged = be32_to_cpup(p);
6168
6169 if (sizechanged) {
6170 /* throw away new size */
6171 p = xdr_inline_decode(xdr, 8);
6172 if (unlikely(!p))
6173 return -EIO;
6174 }
6175 return 0;
6176}
6177
6178static int decode_test_stateid(struct xdr_stream *xdr,
6179 struct nfs41_test_stateid_res *res)
6180{
6181 __be32 *p;
6182 int status;
6183 int num_res;
6184
6185 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6186 if (status)
6187 return status;
6188
6189 p = xdr_inline_decode(xdr, 4);
6190 if (unlikely(!p))
6191 return -EIO;
6192 num_res = be32_to_cpup(p++);
6193 if (num_res != 1)
6194 return -EIO;
6195
6196 p = xdr_inline_decode(xdr, 4);
6197 if (unlikely(!p))
6198 return -EIO;
6199 res->status = be32_to_cpup(p++);
6200
6201 return status;
6202}
6203
6204static int decode_free_stateid(struct xdr_stream *xdr,
6205 struct nfs41_free_stateid_res *res)
6206{
6207 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6208 return res->status;
6209}
6210#else
6211static inline
6212int decode_layoutreturn(struct xdr_stream *xdr,
6213 struct nfs4_layoutreturn_res *res)
6214{
6215 return 0;
6216}
6217
6218static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
6219 struct nfs4_layoutget_res *res)
6220{
6221 return 0;
6222}
6223
6224#endif /* CONFIG_NFS_V4_1 */
6225
6226/*
6227 * END OF "GENERIC" DECODE ROUTINES.
6228 */
6229
6230/*
6231 * Decode OPEN_DOWNGRADE response
6232 */
6233static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6234 struct xdr_stream *xdr,
6235 void *data)
6236{
6237 struct nfs_closeres *res = data;
6238 struct compound_hdr hdr;
6239 int status;
6240
6241 status = decode_compound_hdr(xdr, hdr: &hdr);
6242 if (status)
6243 goto out;
6244 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6245 if (status)
6246 goto out;
6247 status = decode_putfh(xdr);
6248 if (status)
6249 goto out;
6250 if (res->lr_res) {
6251 status = decode_layoutreturn(xdr, res: res->lr_res);
6252 res->lr_ret = status;
6253 if (status)
6254 goto out;
6255 }
6256 status = decode_open_downgrade(xdr, res);
6257out:
6258 return status;
6259}
6260
6261/*
6262 * Decode ACCESS response
6263 */
6264static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6265 void *data)
6266{
6267 struct nfs4_accessres *res = data;
6268 struct compound_hdr hdr;
6269 int status;
6270
6271 status = decode_compound_hdr(xdr, hdr: &hdr);
6272 if (status)
6273 goto out;
6274 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6275 if (status)
6276 goto out;
6277 status = decode_putfh(xdr);
6278 if (status != 0)
6279 goto out;
6280 status = decode_access(xdr, supported: &res->supported, access: &res->access);
6281 if (status != 0)
6282 goto out;
6283 if (res->fattr)
6284 decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6285out:
6286 return status;
6287}
6288
6289/*
6290 * Decode LOOKUP response
6291 */
6292static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6293 void *data)
6294{
6295 struct nfs4_lookup_res *res = data;
6296 struct compound_hdr hdr;
6297 int status;
6298
6299 status = decode_compound_hdr(xdr, hdr: &hdr);
6300 if (status)
6301 goto out;
6302 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6303 if (status)
6304 goto out;
6305 status = decode_putfh(xdr);
6306 if (status)
6307 goto out;
6308 status = decode_lookup(xdr);
6309 if (status)
6310 goto out;
6311 status = decode_getfh(xdr, fh: res->fh);
6312 if (status)
6313 goto out;
6314 status = decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6315out:
6316 return status;
6317}
6318
6319/*
6320 * Decode LOOKUPP response
6321 */
6322static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6323 void *data)
6324{
6325 struct nfs4_lookupp_res *res = data;
6326 struct compound_hdr hdr;
6327 int status;
6328
6329 status = decode_compound_hdr(xdr, hdr: &hdr);
6330 if (status)
6331 goto out;
6332 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6333 if (status)
6334 goto out;
6335 status = decode_putfh(xdr);
6336 if (status)
6337 goto out;
6338 status = decode_lookupp(xdr);
6339 if (status)
6340 goto out;
6341 status = decode_getfh(xdr, fh: res->fh);
6342 if (status)
6343 goto out;
6344 status = decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6345out:
6346 return status;
6347}
6348
6349/*
6350 * Decode LOOKUP_ROOT response
6351 */
6352static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6353 struct xdr_stream *xdr,
6354 void *data)
6355{
6356 struct nfs4_lookup_res *res = data;
6357 struct compound_hdr hdr;
6358 int status;
6359
6360 status = decode_compound_hdr(xdr, hdr: &hdr);
6361 if (status)
6362 goto out;
6363 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6364 if (status)
6365 goto out;
6366 status = decode_putrootfh(xdr);
6367 if (status)
6368 goto out;
6369 status = decode_getfh(xdr, fh: res->fh);
6370 if (status == 0)
6371 status = decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6372out:
6373 return status;
6374}
6375
6376/*
6377 * Decode REMOVE response
6378 */
6379static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6380 void *data)
6381{
6382 struct nfs_removeres *res = data;
6383 struct compound_hdr hdr;
6384 int status;
6385
6386 status = decode_compound_hdr(xdr, hdr: &hdr);
6387 if (status)
6388 goto out;
6389 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6390 if (status)
6391 goto out;
6392 status = decode_putfh(xdr);
6393 if (status)
6394 goto out;
6395 status = decode_remove(xdr, cinfo: &res->cinfo);
6396out:
6397 return status;
6398}
6399
6400/*
6401 * Decode RENAME response
6402 */
6403static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6404 void *data)
6405{
6406 struct nfs_renameres *res = data;
6407 struct compound_hdr hdr;
6408 int status;
6409
6410 status = decode_compound_hdr(xdr, hdr: &hdr);
6411 if (status)
6412 goto out;
6413 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6414 if (status)
6415 goto out;
6416 status = decode_putfh(xdr);
6417 if (status)
6418 goto out;
6419 status = decode_savefh(xdr);
6420 if (status)
6421 goto out;
6422 status = decode_putfh(xdr);
6423 if (status)
6424 goto out;
6425 status = decode_rename(xdr, old_cinfo: &res->old_cinfo, new_cinfo: &res->new_cinfo);
6426out:
6427 return status;
6428}
6429
6430/*
6431 * Decode LINK response
6432 */
6433static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6434 void *data)
6435{
6436 struct nfs4_link_res *res = data;
6437 struct compound_hdr hdr;
6438 int status;
6439
6440 status = decode_compound_hdr(xdr, hdr: &hdr);
6441 if (status)
6442 goto out;
6443 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6444 if (status)
6445 goto out;
6446 status = decode_putfh(xdr);
6447 if (status)
6448 goto out;
6449 status = decode_savefh(xdr);
6450 if (status)
6451 goto out;
6452 status = decode_putfh(xdr);
6453 if (status)
6454 goto out;
6455 status = decode_link(xdr, cinfo: &res->cinfo);
6456 if (status)
6457 goto out;
6458 /*
6459 * Note order: OP_LINK leaves the directory as the current
6460 * filehandle.
6461 */
6462 status = decode_restorefh(xdr);
6463 if (status)
6464 goto out;
6465 decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6466out:
6467 return status;
6468}
6469
6470/*
6471 * Decode CREATE response
6472 */
6473static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6474 void *data)
6475{
6476 struct nfs4_create_res *res = data;
6477 struct compound_hdr hdr;
6478 int status;
6479
6480 status = decode_compound_hdr(xdr, hdr: &hdr);
6481 if (status)
6482 goto out;
6483 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6484 if (status)
6485 goto out;
6486 status = decode_putfh(xdr);
6487 if (status)
6488 goto out;
6489 status = decode_create(xdr, cinfo: &res->dir_cinfo);
6490 if (status)
6491 goto out;
6492 status = decode_getfh(xdr, fh: res->fh);
6493 if (status)
6494 goto out;
6495 decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6496out:
6497 return status;
6498}
6499
6500/*
6501 * Decode SYMLINK response
6502 */
6503static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6504 void *res)
6505{
6506 return nfs4_xdr_dec_create(rqstp, xdr, data: res);
6507}
6508
6509/*
6510 * Decode GETATTR response
6511 */
6512static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6513 void *data)
6514{
6515 struct nfs4_getattr_res *res = data;
6516 struct compound_hdr hdr;
6517 int status;
6518
6519 status = decode_compound_hdr(xdr, hdr: &hdr);
6520 if (status)
6521 goto out;
6522 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6523 if (status)
6524 goto out;
6525 status = decode_putfh(xdr);
6526 if (status)
6527 goto out;
6528 status = decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6529out:
6530 return status;
6531}
6532
6533/*
6534 * Encode an SETACL request
6535 */
6536static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6537 const void *data)
6538{
6539 const struct nfs_setaclargs *args = data;
6540 struct compound_hdr hdr = {
6541 .minorversion = nfs4_xdr_minorversion(args: &args->seq_args),
6542 };
6543
6544 encode_compound_hdr(xdr, req, hdr: &hdr);
6545 encode_sequence(xdr, args: &args->seq_args, hdr: &hdr);
6546 encode_putfh(xdr, fh: args->fh, hdr: &hdr);
6547 encode_setacl(xdr, arg: args, hdr: &hdr);
6548 encode_nops(hdr: &hdr);
6549}
6550
6551/*
6552 * Decode SETACL response
6553 */
6554static int
6555nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6556 void *data)
6557{
6558 struct nfs_setaclres *res = data;
6559 struct compound_hdr hdr;
6560 int status;
6561
6562 status = decode_compound_hdr(xdr, hdr: &hdr);
6563 if (status)
6564 goto out;
6565 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6566 if (status)
6567 goto out;
6568 status = decode_putfh(xdr);
6569 if (status)
6570 goto out;
6571 status = decode_setattr(xdr);
6572out:
6573 return status;
6574}
6575
6576/*
6577 * Decode GETACL response
6578 */
6579static int
6580nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6581 void *data)
6582{
6583 struct nfs_getaclres *res = data;
6584 struct compound_hdr hdr;
6585 int status;
6586
6587 if (res->acl_scratch != NULL)
6588 xdr_set_scratch_folio(xdr, folio: res->acl_scratch);
6589 status = decode_compound_hdr(xdr, hdr: &hdr);
6590 if (status)
6591 goto out;
6592 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6593 if (status)
6594 goto out;
6595 status = decode_putfh(xdr);
6596 if (status)
6597 goto out;
6598 status = decode_getacl(xdr, req: rqstp, res, type: res->acl_type);
6599
6600out:
6601 return status;
6602}
6603
6604/*
6605 * Decode CLOSE response
6606 */
6607static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6608 void *data)
6609{
6610 struct nfs_closeres *res = data;
6611 struct compound_hdr hdr;
6612 int status;
6613
6614 status = decode_compound_hdr(xdr, hdr: &hdr);
6615 if (status)
6616 goto out;
6617 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6618 if (status)
6619 goto out;
6620 status = decode_putfh(xdr);
6621 if (status)
6622 goto out;
6623 if (res->lr_res) {
6624 status = decode_layoutreturn(xdr, res: res->lr_res);
6625 res->lr_ret = status;
6626 if (status)
6627 goto out;
6628 }
6629 if (res->fattr != NULL) {
6630 status = decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6631 if (status != 0)
6632 goto out;
6633 }
6634 status = decode_close(xdr, res);
6635out:
6636 return status;
6637}
6638
6639/*
6640 * Decode OPEN response
6641 */
6642static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6643 void *data)
6644{
6645 struct nfs_openres *res = data;
6646 struct compound_hdr hdr;
6647 int status;
6648
6649 status = decode_compound_hdr(xdr, hdr: &hdr);
6650 if (status)
6651 goto out;
6652 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6653 if (status)
6654 goto out;
6655 status = decode_putfh(xdr);
6656 if (status)
6657 goto out;
6658 status = decode_open(xdr, res);
6659 if (status)
6660 goto out;
6661 status = decode_getfh(xdr, fh: &res->fh);
6662 if (status)
6663 goto out;
6664 if (res->access_request)
6665 decode_access(xdr, supported: &res->access_supported, access: &res->access_result);
6666 decode_getfattr(xdr, fattr: res->f_attr, server: res->server);
6667 if (res->lg_res)
6668 decode_layoutget(xdr, req: rqstp, res: res->lg_res);
6669out:
6670 return status;
6671}
6672
6673/*
6674 * Decode OPEN_CONFIRM response
6675 */
6676static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6677 struct xdr_stream *xdr,
6678 void *data)
6679{
6680 struct nfs_open_confirmres *res = data;
6681 struct compound_hdr hdr;
6682 int status;
6683
6684 status = decode_compound_hdr(xdr, hdr: &hdr);
6685 if (status)
6686 goto out;
6687 status = decode_putfh(xdr);
6688 if (status)
6689 goto out;
6690 status = decode_open_confirm(xdr, res);
6691out:
6692 return status;
6693}
6694
6695/*
6696 * Decode OPEN response
6697 */
6698static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6699 struct xdr_stream *xdr,
6700 void *data)
6701{
6702 struct nfs_openres *res = data;
6703 struct compound_hdr hdr;
6704 int status;
6705
6706 status = decode_compound_hdr(xdr, hdr: &hdr);
6707 if (status)
6708 goto out;
6709 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6710 if (status)
6711 goto out;
6712 status = decode_putfh(xdr);
6713 if (status)
6714 goto out;
6715 status = decode_open(xdr, res);
6716 if (status)
6717 goto out;
6718 if (res->access_request)
6719 decode_access(xdr, supported: &res->access_supported, access: &res->access_result);
6720 decode_getfattr(xdr, fattr: res->f_attr, server: res->server);
6721 if (res->lg_res)
6722 decode_layoutget(xdr, req: rqstp, res: res->lg_res);
6723out:
6724 return status;
6725}
6726
6727/*
6728 * Decode SETATTR response
6729 */
6730static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6731 struct xdr_stream *xdr,
6732 void *data)
6733{
6734 struct nfs_setattrres *res = data;
6735 struct compound_hdr hdr;
6736 int status;
6737
6738 status = decode_compound_hdr(xdr, hdr: &hdr);
6739 if (status)
6740 goto out;
6741 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6742 if (status)
6743 goto out;
6744 status = decode_putfh(xdr);
6745 if (status)
6746 goto out;
6747 status = decode_setattr(xdr);
6748 if (status)
6749 goto out;
6750 decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6751out:
6752 return status;
6753}
6754
6755/*
6756 * Decode LOCK response
6757 */
6758static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6759 void *data)
6760{
6761 struct nfs_lock_res *res = data;
6762 struct compound_hdr hdr;
6763 int status;
6764
6765 status = decode_compound_hdr(xdr, hdr: &hdr);
6766 if (status)
6767 goto out;
6768 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6769 if (status)
6770 goto out;
6771 status = decode_putfh(xdr);
6772 if (status)
6773 goto out;
6774 status = decode_lock(xdr, res);
6775out:
6776 return status;
6777}
6778
6779/*
6780 * Decode LOCKT response
6781 */
6782static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6783 void *data)
6784{
6785 struct nfs_lockt_res *res = data;
6786 struct compound_hdr hdr;
6787 int status;
6788
6789 status = decode_compound_hdr(xdr, hdr: &hdr);
6790 if (status)
6791 goto out;
6792 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6793 if (status)
6794 goto out;
6795 status = decode_putfh(xdr);
6796 if (status)
6797 goto out;
6798 status = decode_lockt(xdr, res);
6799out:
6800 return status;
6801}
6802
6803/*
6804 * Decode LOCKU response
6805 */
6806static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6807 void *data)
6808{
6809 struct nfs_locku_res *res = data;
6810 struct compound_hdr hdr;
6811 int status;
6812
6813 status = decode_compound_hdr(xdr, hdr: &hdr);
6814 if (status)
6815 goto out;
6816 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6817 if (status)
6818 goto out;
6819 status = decode_putfh(xdr);
6820 if (status)
6821 goto out;
6822 status = decode_locku(xdr, res);
6823out:
6824 return status;
6825}
6826
6827static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6828 struct xdr_stream *xdr, void *dummy)
6829{
6830 struct compound_hdr hdr;
6831 int status;
6832
6833 status = decode_compound_hdr(xdr, hdr: &hdr);
6834 if (!status)
6835 status = decode_release_lockowner(xdr);
6836 return status;
6837}
6838
6839/*
6840 * Decode READLINK response
6841 */
6842static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6843 struct xdr_stream *xdr,
6844 void *data)
6845{
6846 struct nfs4_readlink_res *res = data;
6847 struct compound_hdr hdr;
6848 int status;
6849
6850 status = decode_compound_hdr(xdr, hdr: &hdr);
6851 if (status)
6852 goto out;
6853 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6854 if (status)
6855 goto out;
6856 status = decode_putfh(xdr);
6857 if (status)
6858 goto out;
6859 status = decode_readlink(xdr, req: rqstp);
6860out:
6861 return status;
6862}
6863
6864/*
6865 * Decode READDIR response
6866 */
6867static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6868 void *data)
6869{
6870 struct nfs4_readdir_res *res = data;
6871 struct compound_hdr hdr;
6872 int status;
6873
6874 status = decode_compound_hdr(xdr, hdr: &hdr);
6875 if (status)
6876 goto out;
6877 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6878 if (status)
6879 goto out;
6880 status = decode_putfh(xdr);
6881 if (status)
6882 goto out;
6883 status = decode_readdir(xdr, req: rqstp, readdir: res);
6884out:
6885 return status;
6886}
6887
6888/*
6889 * Decode Read response
6890 */
6891static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6892 void *data)
6893{
6894 struct nfs_pgio_res *res = data;
6895 struct compound_hdr hdr;
6896 int status;
6897
6898 status = decode_compound_hdr(xdr, hdr: &hdr);
6899 res->op_status = hdr.status;
6900 if (status)
6901 goto out;
6902 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6903 if (status)
6904 goto out;
6905 status = decode_putfh(xdr);
6906 if (status)
6907 goto out;
6908 status = decode_read(xdr, req: rqstp, res);
6909 if (!status)
6910 status = res->count;
6911out:
6912 return status;
6913}
6914
6915/*
6916 * Decode WRITE response
6917 */
6918static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6919 void *data)
6920{
6921 struct nfs_pgio_res *res = data;
6922 struct compound_hdr hdr;
6923 int status;
6924
6925 status = decode_compound_hdr(xdr, hdr: &hdr);
6926 res->op_status = hdr.status;
6927 if (status)
6928 goto out;
6929 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6930 if (status)
6931 goto out;
6932 status = decode_putfh(xdr);
6933 if (status)
6934 goto out;
6935 status = decode_write(xdr, res);
6936 if (status)
6937 goto out;
6938 if (res->fattr)
6939 decode_getfattr(xdr, fattr: res->fattr, server: res->server);
6940 if (!status)
6941 status = res->count;
6942out:
6943 return status;
6944}
6945
6946/*
6947 * Decode COMMIT response
6948 */
6949static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6950 void *data)
6951{
6952 struct nfs_commitres *res = data;
6953 struct compound_hdr hdr;
6954 int status;
6955
6956 status = decode_compound_hdr(xdr, hdr: &hdr);
6957 res->op_status = hdr.status;
6958 if (status)
6959 goto out;
6960 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
6961 if (status)
6962 goto out;
6963 status = decode_putfh(xdr);
6964 if (status)
6965 goto out;
6966 status = decode_commit(xdr, res);
6967out:
6968 return status;
6969}
6970
6971/*
6972 * Decode FSINFO response
6973 */
6974static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6975 void *data)
6976{
6977 struct nfs4_fsinfo_res *res = data;
6978 struct compound_hdr hdr;
6979 int status;
6980
6981 status = decode_compound_hdr(xdr, hdr: &hdr);
6982 if (!status)
6983 status = decode_sequence(xdr, res: &res->seq_res, rqstp: req);
6984 if (!status)
6985 status = decode_putfh(xdr);
6986 if (!status)
6987 status = decode_fsinfo(xdr, fsinfo: res->fsinfo);
6988 return status;
6989}
6990
6991/*
6992 * Decode PATHCONF response
6993 */
6994static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6995 void *data)
6996{
6997 struct nfs4_pathconf_res *res = data;
6998 struct compound_hdr hdr;
6999 int status;
7000
7001 status = decode_compound_hdr(xdr, hdr: &hdr);
7002 if (!status)
7003 status = decode_sequence(xdr, res: &res->seq_res, rqstp: req);
7004 if (!status)
7005 status = decode_putfh(xdr);
7006 if (!status)
7007 status = decode_pathconf(xdr, pathconf: res->pathconf);
7008 return status;
7009}
7010
7011/*
7012 * Decode STATFS response
7013 */
7014static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
7015 void *data)
7016{
7017 struct nfs4_statfs_res *res = data;
7018 struct compound_hdr hdr;
7019 int status;
7020
7021 status = decode_compound_hdr(xdr, hdr: &hdr);
7022 if (!status)
7023 status = decode_sequence(xdr, res: &res->seq_res, rqstp: req);
7024 if (!status)
7025 status = decode_putfh(xdr);
7026 if (!status)
7027 status = decode_statfs(xdr, fsstat: res->fsstat);
7028 return status;
7029}
7030
7031/*
7032 * Decode GETATTR_BITMAP response
7033 */
7034static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
7035 struct xdr_stream *xdr,
7036 void *data)
7037{
7038 struct nfs4_server_caps_res *res = data;
7039 struct compound_hdr hdr;
7040 int status;
7041
7042 status = decode_compound_hdr(xdr, hdr: &hdr);
7043 if (status)
7044 goto out;
7045 status = decode_sequence(xdr, res: &res->seq_res, rqstp: req);
7046 if (status)
7047 goto out;
7048 status = decode_putfh(xdr);
7049 if (status)
7050 goto out;
7051 status = decode_server_caps(xdr, res);
7052out:
7053 return status;
7054}
7055
7056/*
7057 * Decode RENEW response
7058 */
7059static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
7060 void *__unused)
7061{
7062 struct compound_hdr hdr;
7063 int status;
7064
7065 status = decode_compound_hdr(xdr, hdr: &hdr);
7066 if (!status)
7067 status = decode_renew(xdr);
7068 return status;
7069}
7070
7071/*
7072 * Decode SETCLIENTID response
7073 */
7074static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
7075 struct xdr_stream *xdr,
7076 void *data)
7077{
7078 struct nfs4_setclientid_res *res = data;
7079 struct compound_hdr hdr;
7080 int status;
7081
7082 status = decode_compound_hdr(xdr, hdr: &hdr);
7083 if (!status)
7084 status = decode_setclientid(xdr, res);
7085 return status;
7086}
7087
7088/*
7089 * Decode SETCLIENTID_CONFIRM response
7090 */
7091static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
7092 struct xdr_stream *xdr,
7093 void *data)
7094{
7095 struct compound_hdr hdr;
7096 int status;
7097
7098 status = decode_compound_hdr(xdr, hdr: &hdr);
7099 if (!status)
7100 status = decode_setclientid_confirm(xdr);
7101 return status;
7102}
7103
7104/*
7105 * Decode DELEGRETURN response
7106 */
7107static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
7108 struct xdr_stream *xdr,
7109 void *data)
7110{
7111 struct nfs4_delegreturnres *res = data;
7112 struct compound_hdr hdr;
7113 int status;
7114
7115 status = decode_compound_hdr(xdr, hdr: &hdr);
7116 if (status)
7117 goto out;
7118 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
7119 if (status)
7120 goto out;
7121 status = decode_putfh(xdr);
7122 if (status != 0)
7123 goto out;
7124 if (res->lr_res) {
7125 status = decode_layoutreturn(xdr, res: res->lr_res);
7126 res->lr_ret = status;
7127 if (status)
7128 goto out;
7129 }
7130 if (res->sattr_res) {
7131 status = decode_delegattr(xdr);
7132 res->sattr_ret = status;
7133 if (status)
7134 goto out;
7135 }
7136 if (res->fattr) {
7137 status = decode_getfattr(xdr, fattr: res->fattr, server: res->server);
7138 if (status != 0)
7139 goto out;
7140 }
7141 status = decode_delegreturn(xdr);
7142out:
7143 return status;
7144}
7145
7146/*
7147 * Decode FS_LOCATIONS response
7148 */
7149static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7150 struct xdr_stream *xdr,
7151 void *data)
7152{
7153 struct nfs4_fs_locations_res *res = data;
7154 struct compound_hdr hdr;
7155 int status;
7156
7157 status = decode_compound_hdr(xdr, hdr: &hdr);
7158 if (status)
7159 goto out;
7160 status = decode_sequence(xdr, res: &res->seq_res, rqstp: req);
7161 if (status)
7162 goto out;
7163 status = decode_putfh(xdr);
7164 if (status)
7165 goto out;
7166 if (res->migration) {
7167 xdr_enter_page(xdr, PAGE_SIZE);
7168 status = decode_getfattr_generic(xdr,
7169 fattr: res->fs_locations->fattr,
7170 NULL, fs_loc: res->fs_locations,
7171 server: res->fs_locations->server);
7172 if (status)
7173 goto out;
7174 if (res->renew)
7175 status = decode_renew(xdr);
7176 } else {
7177 status = decode_lookup(xdr);
7178 if (status)
7179 goto out;
7180 xdr_enter_page(xdr, PAGE_SIZE);
7181 status = decode_getfattr_generic(xdr,
7182 fattr: res->fs_locations->fattr,
7183 NULL, fs_loc: res->fs_locations,
7184 server: res->fs_locations->server);
7185 }
7186out:
7187 return status;
7188}
7189
7190/*
7191 * Decode SECINFO response
7192 */
7193static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7194 struct xdr_stream *xdr,
7195 void *data)
7196{
7197 struct nfs4_secinfo_res *res = data;
7198 struct compound_hdr hdr;
7199 int status;
7200
7201 status = decode_compound_hdr(xdr, hdr: &hdr);
7202 if (status)
7203 goto out;
7204 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
7205 if (status)
7206 goto out;
7207 status = decode_putfh(xdr);
7208 if (status)
7209 goto out;
7210 status = decode_secinfo(xdr, res);
7211out:
7212 return status;
7213}
7214
7215/*
7216 * Decode FSID_PRESENT response
7217 */
7218static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7219 struct xdr_stream *xdr,
7220 void *data)
7221{
7222 struct nfs4_fsid_present_res *res = data;
7223 struct compound_hdr hdr;
7224 int status;
7225
7226 status = decode_compound_hdr(xdr, hdr: &hdr);
7227 if (status)
7228 goto out;
7229 status = decode_sequence(xdr, res: &res->seq_res, rqstp);
7230 if (status)
7231 goto out;
7232 status = decode_putfh(xdr);
7233 if (status)
7234 goto out;
7235 status = decode_getfh(xdr, fh: res->fh);
7236 if (status)
7237 goto out;
7238 if (res->renew)
7239 status = decode_renew(xdr);
7240out:
7241 return status;
7242}
7243
7244#if defined(CONFIG_NFS_V4_1)
7245/*
7246 * Decode BIND_CONN_TO_SESSION response
7247 */
7248static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7249 struct xdr_stream *xdr,
7250 void *res)
7251{
7252 struct compound_hdr hdr;
7253 int status;
7254
7255 status = decode_compound_hdr(xdr, &hdr);
7256 if (!status)
7257 status = decode_bind_conn_to_session(xdr, res);
7258 return status;
7259}
7260
7261/*
7262 * Decode EXCHANGE_ID response
7263 */
7264static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7265 struct xdr_stream *xdr,
7266 void *res)
7267{
7268 struct compound_hdr hdr;
7269 int status;
7270
7271 status = decode_compound_hdr(xdr, &hdr);
7272 if (!status)
7273 status = decode_exchange_id(xdr, res);
7274 return status;
7275}
7276
7277/*
7278 * Decode CREATE_SESSION response
7279 */
7280static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7281 struct xdr_stream *xdr,
7282 void *res)
7283{
7284 struct compound_hdr hdr;
7285 int status;
7286
7287 status = decode_compound_hdr(xdr, &hdr);
7288 if (!status)
7289 status = decode_create_session(xdr, res);
7290 return status;
7291}
7292
7293/*
7294 * Decode DESTROY_SESSION response
7295 */
7296static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7297 struct xdr_stream *xdr,
7298 void *res)
7299{
7300 struct compound_hdr hdr;
7301 int status;
7302
7303 status = decode_compound_hdr(xdr, &hdr);
7304 if (!status)
7305 status = decode_destroy_session(xdr, res);
7306 return status;
7307}
7308
7309/*
7310 * Decode DESTROY_CLIENTID response
7311 */
7312static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7313 struct xdr_stream *xdr,
7314 void *res)
7315{
7316 struct compound_hdr hdr;
7317 int status;
7318
7319 status = decode_compound_hdr(xdr, &hdr);
7320 if (!status)
7321 status = decode_destroy_clientid(xdr, res);
7322 return status;
7323}
7324
7325/*
7326 * Decode SEQUENCE response
7327 */
7328static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7329 struct xdr_stream *xdr,
7330 void *res)
7331{
7332 struct compound_hdr hdr;
7333 int status;
7334
7335 status = decode_compound_hdr(xdr, &hdr);
7336 if (!status)
7337 status = decode_sequence(xdr, res, rqstp);
7338 return status;
7339}
7340
7341#endif
7342
7343/*
7344 * Decode GET_LEASE_TIME response
7345 */
7346static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7347 struct xdr_stream *xdr,
7348 void *data)
7349{
7350 struct nfs4_get_lease_time_res *res = data;
7351 struct compound_hdr hdr;
7352 int status;
7353
7354 status = decode_compound_hdr(xdr, hdr: &hdr);
7355 if (!status)
7356 status = decode_sequence(xdr, res: &res->lr_seq_res, rqstp);
7357 if (!status)
7358 status = decode_putrootfh(xdr);
7359 if (!status)
7360 status = decode_fsinfo(xdr, fsinfo: res->lr_fsinfo);
7361 return status;
7362}
7363
7364#ifdef CONFIG_NFS_V4_1
7365
7366/*
7367 * Decode RECLAIM_COMPLETE response
7368 */
7369static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7370 struct xdr_stream *xdr,
7371 void *data)
7372{
7373 struct nfs41_reclaim_complete_res *res = data;
7374 struct compound_hdr hdr;
7375 int status;
7376
7377 status = decode_compound_hdr(xdr, &hdr);
7378 if (!status)
7379 status = decode_sequence(xdr, &res->seq_res, rqstp);
7380 if (!status)
7381 status = decode_reclaim_complete(xdr, NULL);
7382 return status;
7383}
7384
7385/*
7386 * Decode GETDEVINFO response
7387 */
7388static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7389 struct xdr_stream *xdr,
7390 void *data)
7391{
7392 struct nfs4_getdeviceinfo_res *res = data;
7393 struct compound_hdr hdr;
7394 int status;
7395
7396 status = decode_compound_hdr(xdr, &hdr);
7397 if (status != 0)
7398 goto out;
7399 status = decode_sequence(xdr, &res->seq_res, rqstp);
7400 if (status != 0)
7401 goto out;
7402 status = decode_getdeviceinfo(xdr, res);
7403out:
7404 return status;
7405}
7406
7407/*
7408 * Decode LAYOUTGET response
7409 */
7410static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7411 struct xdr_stream *xdr,
7412 void *data)
7413{
7414 struct nfs4_layoutget_res *res = data;
7415 struct compound_hdr hdr;
7416 int status;
7417
7418 status = decode_compound_hdr(xdr, &hdr);
7419 if (status)
7420 goto out;
7421 status = decode_sequence(xdr, &res->seq_res, rqstp);
7422 if (status)
7423 goto out;
7424 status = decode_putfh(xdr);
7425 if (status)
7426 goto out;
7427 status = decode_layoutget(xdr, rqstp, res);
7428out:
7429 return status;
7430}
7431
7432/*
7433 * Decode LAYOUTRETURN response
7434 */
7435static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7436 struct xdr_stream *xdr,
7437 void *data)
7438{
7439 struct nfs4_layoutreturn_res *res = data;
7440 struct compound_hdr hdr;
7441 int status;
7442
7443 status = decode_compound_hdr(xdr, &hdr);
7444 if (status)
7445 goto out;
7446 status = decode_sequence(xdr, &res->seq_res, rqstp);
7447 if (status)
7448 goto out;
7449 status = decode_putfh(xdr);
7450 if (status)
7451 goto out;
7452 status = decode_layoutreturn(xdr, res);
7453out:
7454 return status;
7455}
7456
7457/*
7458 * Decode LAYOUTCOMMIT response
7459 */
7460static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7461 struct xdr_stream *xdr,
7462 void *data)
7463{
7464 struct nfs4_layoutcommit_res *res = data;
7465 struct compound_hdr hdr;
7466 int status;
7467
7468 status = decode_compound_hdr(xdr, &hdr);
7469 if (status)
7470 goto out;
7471 status = decode_sequence(xdr, &res->seq_res, rqstp);
7472 if (status)
7473 goto out;
7474 status = decode_putfh(xdr);
7475 if (status)
7476 goto out;
7477 status = decode_layoutcommit(xdr, rqstp, res);
7478 if (status)
7479 goto out;
7480 decode_getfattr(xdr, res->fattr, res->server);
7481out:
7482 return status;
7483}
7484
7485/*
7486 * Decode SECINFO_NO_NAME response
7487 */
7488static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7489 struct xdr_stream *xdr,
7490 void *data)
7491{
7492 struct nfs4_secinfo_res *res = data;
7493 struct compound_hdr hdr;
7494 int status;
7495
7496 status = decode_compound_hdr(xdr, &hdr);
7497 if (status)
7498 goto out;
7499 status = decode_sequence(xdr, &res->seq_res, rqstp);
7500 if (status)
7501 goto out;
7502 status = decode_putrootfh(xdr);
7503 if (status)
7504 goto out;
7505 status = decode_secinfo_no_name(xdr, res);
7506out:
7507 return status;
7508}
7509
7510/*
7511 * Decode TEST_STATEID response
7512 */
7513static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7514 struct xdr_stream *xdr,
7515 void *data)
7516{
7517 struct nfs41_test_stateid_res *res = data;
7518 struct compound_hdr hdr;
7519 int status;
7520
7521 status = decode_compound_hdr(xdr, &hdr);
7522 if (status)
7523 goto out;
7524 status = decode_sequence(xdr, &res->seq_res, rqstp);
7525 if (status)
7526 goto out;
7527 status = decode_test_stateid(xdr, res);
7528out:
7529 return status;
7530}
7531
7532/*
7533 * Decode FREE_STATEID response
7534 */
7535static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7536 struct xdr_stream *xdr,
7537 void *data)
7538{
7539 struct nfs41_free_stateid_res *res = data;
7540 struct compound_hdr hdr;
7541 int status;
7542
7543 status = decode_compound_hdr(xdr, &hdr);
7544 if (status)
7545 goto out;
7546 status = decode_sequence(xdr, &res->seq_res, rqstp);
7547 if (status)
7548 goto out;
7549 status = decode_free_stateid(xdr, res);
7550out:
7551 return status;
7552}
7553#endif /* CONFIG_NFS_V4_1 */
7554
7555/**
7556 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7557 * the local page cache.
7558 * @xdr: XDR stream where entry resides
7559 * @entry: buffer to fill in with entry data
7560 * @plus: boolean indicating whether this should be a readdirplus entry
7561 *
7562 * Returns zero if successful, otherwise a negative errno value is
7563 * returned.
7564 *
7565 * This function is not invoked during READDIR reply decoding, but
7566 * rather whenever an application invokes the getdents(2) system call
7567 * on a directory already in our cache.
7568 */
7569int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7570 bool plus)
7571{
7572 unsigned int savep;
7573 uint32_t bitmap[3] = {0};
7574 uint32_t len;
7575 uint64_t new_cookie;
7576 __be32 *p = xdr_inline_decode(xdr, nbytes: 4);
7577 if (unlikely(!p))
7578 return -EAGAIN;
7579 if (*p == xdr_zero) {
7580 p = xdr_inline_decode(xdr, nbytes: 4);
7581 if (unlikely(!p))
7582 return -EAGAIN;
7583 if (*p == xdr_zero)
7584 return -EAGAIN;
7585 entry->eof = 1;
7586 return -EBADCOOKIE;
7587 }
7588
7589 p = xdr_inline_decode(xdr, nbytes: 12);
7590 if (unlikely(!p))
7591 return -EAGAIN;
7592 p = xdr_decode_hyper(p, valp: &new_cookie);
7593 entry->len = be32_to_cpup(p);
7594
7595 p = xdr_inline_decode(xdr, nbytes: entry->len);
7596 if (unlikely(!p))
7597 return -EAGAIN;
7598 entry->name = (const char *) p;
7599
7600 /*
7601 * In case the server doesn't return an inode number,
7602 * we fake one here. (We don't use inode number 0,
7603 * since glibc seems to choke on it...)
7604 */
7605 entry->ino = 1;
7606 entry->fattr->valid = 0;
7607
7608 if (decode_attr_bitmap(xdr, bitmap) < 0)
7609 return -EAGAIN;
7610
7611 if (decode_attr_length(xdr, attrlen: &len, savep: &savep) < 0)
7612 return -EAGAIN;
7613
7614 if (decode_getfattr_attrs(xdr, bitmap, fattr: entry->fattr, fh: entry->fh,
7615 NULL, server: entry->server) < 0)
7616 return -EAGAIN;
7617 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7618 entry->ino = entry->fattr->mounted_on_fileid;
7619 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7620 entry->ino = entry->fattr->fileid;
7621
7622 entry->d_type = DT_UNKNOWN;
7623 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7624 entry->d_type = nfs_umode_to_dtype(mode: entry->fattr->mode);
7625
7626 entry->cookie = new_cookie;
7627
7628 return 0;
7629}
7630
7631#ifdef CONFIG_NFS_V4_2
7632#include "nfs42xdr.c"
7633#endif /* CONFIG_NFS_V4_2 */
7634
7635#define PROC(proc, argtype, restype) \
7636[NFSPROC4_CLNT_##proc] = { \
7637 .p_proc = NFSPROC4_COMPOUND, \
7638 .p_encode = nfs4_xdr_##argtype, \
7639 .p_decode = nfs4_xdr_##restype, \
7640 .p_arglen = NFS4_##argtype##_sz, \
7641 .p_replen = NFS4_##restype##_sz, \
7642 .p_statidx = NFSPROC4_CLNT_##proc, \
7643 .p_name = #proc, \
7644}
7645
7646#define STUB(proc) \
7647[NFSPROC4_CLNT_##proc] = { \
7648 .p_name = #proc, \
7649}
7650
7651#if defined(CONFIG_NFS_V4_1)
7652#define PROC41(proc, argtype, restype) \
7653 PROC(proc, argtype, restype)
7654#else
7655#define PROC41(proc, argtype, restype) \
7656 STUB(proc)
7657#endif
7658
7659#if defined(CONFIG_NFS_V4_2)
7660#define PROC42(proc, argtype, restype) \
7661 PROC(proc, argtype, restype)
7662#else
7663#define PROC42(proc, argtype, restype) \
7664 STUB(proc)
7665#endif
7666
7667const struct rpc_procinfo nfs4_procedures[] = {
7668 PROC(READ, enc_read, dec_read),
7669 PROC(WRITE, enc_write, dec_write),
7670 PROC(COMMIT, enc_commit, dec_commit),
7671 PROC(OPEN, enc_open, dec_open),
7672 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7673 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7674 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7675 PROC(CLOSE, enc_close, dec_close),
7676 PROC(SETATTR, enc_setattr, dec_setattr),
7677 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7678 PROC(RENEW, enc_renew, dec_renew),
7679 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7680 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7681 PROC(LOCK, enc_lock, dec_lock),
7682 PROC(LOCKT, enc_lockt, dec_lockt),
7683 PROC(LOCKU, enc_locku, dec_locku),
7684 PROC(ACCESS, enc_access, dec_access),
7685 PROC(GETATTR, enc_getattr, dec_getattr),
7686 PROC(LOOKUP, enc_lookup, dec_lookup),
7687 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7688 PROC(REMOVE, enc_remove, dec_remove),
7689 PROC(RENAME, enc_rename, dec_rename),
7690 PROC(LINK, enc_link, dec_link),
7691 PROC(SYMLINK, enc_symlink, dec_symlink),
7692 PROC(CREATE, enc_create, dec_create),
7693 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7694 PROC(STATFS, enc_statfs, dec_statfs),
7695 PROC(READLINK, enc_readlink, dec_readlink),
7696 PROC(READDIR, enc_readdir, dec_readdir),
7697 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7698 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7699 PROC(GETACL, enc_getacl, dec_getacl),
7700 PROC(SETACL, enc_setacl, dec_setacl),
7701 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7702 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7703 PROC(SECINFO, enc_secinfo, dec_secinfo),
7704 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7705 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7706 PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
7707 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7708 PROC41(SEQUENCE, enc_sequence, dec_sequence),
7709 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7710 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
7711 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7712 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),
7713 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7714 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7715 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7716 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7717 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7718 STUB(GETDEVICELIST),
7719 PROC41(BIND_CONN_TO_SESSION,
7720 enc_bind_conn_to_session, dec_bind_conn_to_session),
7721 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid),
7722 PROC42(SEEK, enc_seek, dec_seek),
7723 PROC42(ALLOCATE, enc_allocate, dec_allocate),
7724 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate),
7725 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7726 PROC42(CLONE, enc_clone, dec_clone),
7727 PROC42(COPY, enc_copy, dec_copy),
7728 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
7729 PROC42(OFFLOAD_STATUS, enc_offload_status, dec_offload_status),
7730 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify),
7731 PROC(LOOKUPP, enc_lookupp, dec_lookupp),
7732 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror),
7733 PROC42(GETXATTR, enc_getxattr, dec_getxattr),
7734 PROC42(SETXATTR, enc_setxattr, dec_setxattr),
7735 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs),
7736 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr),
7737 PROC42(READ_PLUS, enc_read_plus, dec_read_plus),
7738 PROC42(ZERO_RANGE, enc_zero_range, dec_zero_range),
7739};
7740
7741static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7742const struct rpc_version nfs_version4 = {
7743 .number = 4,
7744 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7745 .procs = nfs4_procedures,
7746 .counts = nfs_version4_counts,
7747};
7748