4 * Client-side XDR for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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.
38 #include <linux/param.h>
39 #include <linux/time.h>
41 #include <linux/errno.h>
42 #include <linux/string.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/fs_struct.h>
59 #include "nfs4idmap.h"
60 #include "nfs4session.h"
64 #define NFSDBG_FACILITY NFSDBG_XDR
66 /* Mapping from NFS error code to "errno" error code. */
67 #define errno_NFSERR_IO EIO
69 static int nfs4_stat_to_errno(int);
71 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
73 #define NFS4_MAXTAGLEN 20
75 #define NFS4_MAXTAGLEN 0
78 /* lock,open owner id:
79 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
81 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
82 #define lock_owner_id_maxsz (1 + 1 + 4)
83 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
84 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
86 #define op_encode_hdr_maxsz (1)
87 #define op_decode_hdr_maxsz (2)
88 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
90 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
92 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
94 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
95 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
96 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
97 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
98 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
99 ((3+NFS4_FHSIZE) >> 2))
100 #define nfs4_fattr_bitmap_maxsz 4
101 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
102 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
103 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
104 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
106 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
107 /* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
108 #define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
110 #define nfs4_label_maxsz 0
112 /* We support only one layout type per file system */
113 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
114 /* This is based on getfattr, which uses the most attributes: */
115 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
116 3 + 3 + 3 + nfs4_owner_maxsz + \
117 nfs4_group_maxsz + nfs4_label_maxsz + \
118 decode_mdsthreshold_maxsz))
119 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
120 nfs4_fattr_value_maxsz)
121 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
122 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
128 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
129 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
130 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
131 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
132 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
133 /* The 5 accounts for the PNFS attributes, and assumes that at most three
134 * layout types will be returned.
136 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
137 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
138 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
139 #define decode_renew_maxsz (op_decode_hdr_maxsz)
140 #define encode_setclientid_maxsz \
141 (op_encode_hdr_maxsz + \
142 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
144 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
146 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
147 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
149 #define decode_setclientid_maxsz \
150 (op_decode_hdr_maxsz + \
152 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
153 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
154 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
155 #define encode_setclientid_confirm_maxsz \
156 (op_encode_hdr_maxsz + \
157 3 + (NFS4_VERIFIER_SIZE >> 2))
158 #define decode_setclientid_confirm_maxsz \
159 (op_decode_hdr_maxsz)
160 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
161 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
162 #define encode_share_access_maxsz \
164 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
165 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
166 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
167 #define encode_open_maxsz (op_encode_hdr_maxsz + \
168 2 + encode_share_access_maxsz + 2 + \
169 open_owner_id_maxsz + \
170 encode_opentype_maxsz + \
171 encode_claim_null_maxsz)
172 #define decode_space_limit_maxsz (3)
173 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
174 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
175 decode_space_limit_maxsz + \
177 #define decode_change_info_maxsz (5)
178 #define decode_open_maxsz (op_decode_hdr_maxsz + \
179 decode_stateid_maxsz + \
180 decode_change_info_maxsz + 1 + \
181 nfs4_fattr_bitmap_maxsz + \
182 decode_delegation_maxsz)
183 #define encode_open_confirm_maxsz \
184 (op_encode_hdr_maxsz + \
185 encode_stateid_maxsz + 1)
186 #define decode_open_confirm_maxsz \
187 (op_decode_hdr_maxsz + \
188 decode_stateid_maxsz)
189 #define encode_open_downgrade_maxsz \
190 (op_encode_hdr_maxsz + \
191 encode_stateid_maxsz + 1 + \
192 encode_share_access_maxsz)
193 #define decode_open_downgrade_maxsz \
194 (op_decode_hdr_maxsz + \
195 decode_stateid_maxsz)
196 #define encode_close_maxsz (op_encode_hdr_maxsz + \
197 1 + encode_stateid_maxsz)
198 #define decode_close_maxsz (op_decode_hdr_maxsz + \
199 decode_stateid_maxsz)
200 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
201 encode_stateid_maxsz + \
203 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
204 nfs4_fattr_bitmap_maxsz)
205 #define encode_read_maxsz (op_encode_hdr_maxsz + \
206 encode_stateid_maxsz + 3)
207 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
208 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
209 2 + encode_verifier_maxsz + 5 + \
211 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
212 decode_verifier_maxsz)
213 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
214 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
215 #define encode_write_maxsz (op_encode_hdr_maxsz + \
216 encode_stateid_maxsz + 4)
217 #define decode_write_maxsz (op_decode_hdr_maxsz + \
218 2 + decode_verifier_maxsz)
219 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
220 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
221 decode_verifier_maxsz)
222 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
224 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
225 decode_change_info_maxsz)
226 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
228 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
229 decode_change_info_maxsz + \
230 decode_change_info_maxsz)
231 #define encode_link_maxsz (op_encode_hdr_maxsz + \
233 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
234 #define encode_lockowner_maxsz (7)
235 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
237 1 + encode_stateid_maxsz + 1 + \
238 encode_lockowner_maxsz)
239 #define decode_lock_denied_maxsz \
240 (8 + decode_lockowner_maxsz)
241 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
242 decode_lock_denied_maxsz)
243 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
244 encode_lockowner_maxsz)
245 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
246 decode_lock_denied_maxsz)
247 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
248 encode_stateid_maxsz + \
250 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
251 decode_stateid_maxsz)
252 #define encode_release_lockowner_maxsz \
253 (op_encode_hdr_maxsz + \
254 encode_lockowner_maxsz)
255 #define decode_release_lockowner_maxsz \
256 (op_decode_hdr_maxsz)
257 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
258 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
259 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
260 1 + nfs4_name_maxsz + \
263 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
264 #define encode_create_maxsz (op_encode_hdr_maxsz + \
265 1 + 2 + nfs4_name_maxsz + \
267 #define decode_create_maxsz (op_decode_hdr_maxsz + \
268 decode_change_info_maxsz + \
269 nfs4_fattr_bitmap_maxsz)
270 #define encode_statfs_maxsz (encode_getattr_maxsz)
271 #define decode_statfs_maxsz (decode_getattr_maxsz)
272 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
273 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
274 #define encode_getacl_maxsz (encode_getattr_maxsz)
275 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
276 nfs4_fattr_bitmap_maxsz + 1)
277 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
278 encode_stateid_maxsz + 3)
279 #define decode_setacl_maxsz (decode_setattr_maxsz)
280 #define encode_fs_locations_maxsz \
281 (encode_getattr_maxsz)
282 #define decode_fs_locations_maxsz \
284 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
285 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
287 #if defined(CONFIG_NFS_V4_1)
288 #define NFS4_MAX_MACHINE_NAME_LEN (64)
289 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
290 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
292 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
293 encode_verifier_maxsz + \
294 1 /* co_ownerid.len */ + \
295 /* eia_clientowner */ \
296 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
299 /* max is SP4_MACH_CRED (for now) */ + \
300 1 + NFS4_OP_MAP_NUM_WORDS + \
301 1 + NFS4_OP_MAP_NUM_WORDS + \
302 1 /* implementation id array of size 1 */ + \
303 1 /* nii_domain */ + \
304 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
306 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
308 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
309 2 /* eir_clientid */ + \
310 1 /* eir_sequenceid */ + \
311 1 /* eir_flags */ + \
313 /* max is SP4_MACH_CRED (for now) */ + \
314 1 + NFS4_OP_MAP_NUM_WORDS + \
315 1 + NFS4_OP_MAP_NUM_WORDS + \
316 2 /* eir_server_owner.so_minor_id */ + \
317 /* eir_server_owner.so_major_id<> */ \
318 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
319 /* eir_server_scope<> */ \
320 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
321 1 /* eir_server_impl_id array length */ + \
322 1 /* nii_domain */ + \
323 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
325 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
327 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
328 #define decode_channel_attrs_maxsz (6 + \
329 1 /* ca_rdma_ird.len */ + \
331 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
332 2 /* csa_clientid */ + \
333 1 /* csa_sequence */ + \
334 1 /* csa_flags */ + \
335 encode_channel_attrs_maxsz + \
336 encode_channel_attrs_maxsz + \
337 1 /* csa_cb_program */ + \
338 1 /* csa_sec_parms.len (1) */ + \
339 1 /* cb_secflavor (AUTH_SYS) */ + \
341 1 /* machinename.len */ + \
342 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
345 1 /* gids.len (0) */)
346 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
347 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
348 1 /* csr_sequence */ + \
349 1 /* csr_flags */ + \
350 decode_channel_attrs_maxsz + \
351 decode_channel_attrs_maxsz)
352 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
354 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
355 1 /* bctsa_dir */ + \
356 1 /* bctsa_use_conn_in_rdma_mode */)
357 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
359 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
360 1 /* bctsr_dir */ + \
361 1 /* bctsr_use_conn_in_rdma_mode */)
362 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
363 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
364 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
365 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
366 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
367 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
368 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
369 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
370 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
371 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
372 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
373 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
374 1 /* layout type */ + \
376 1 /* bitmap size */ + \
377 1 /* notification bitmap length */ + \
378 1 /* notification bitmap, word 0 */)
379 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
380 1 /* layout type */ + \
381 1 /* opaque devaddr4 length */ + \
382 /* devaddr4 payload is read into page */ \
383 1 /* notification bitmap length */ + \
384 1 /* notification bitmap, word 0 */)
385 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
386 encode_stateid_maxsz)
387 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
388 decode_stateid_maxsz + \
389 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
390 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
394 encode_stateid_maxsz + \
395 1 /* new offset (true) */ + \
396 2 /* last byte written */ + \
397 1 /* nt_timechanged (false) */ + \
398 1 /* layoutupdate4 layout type */ + \
399 1 /* layoutupdate4 opaqueue len */)
400 /* the actual content of layoutupdate4 should
401 be allocated by drivers and spliced in
402 using xdr_write_pages */
403 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
404 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
405 encode_stateid_maxsz + \
407 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
408 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
409 1 + decode_stateid_maxsz)
410 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
411 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
412 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
413 XDR_QUADLEN(NFS4_STATEID_SIZE))
414 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
415 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
416 XDR_QUADLEN(NFS4_STATEID_SIZE))
417 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
418 #else /* CONFIG_NFS_V4_1 */
419 #define encode_sequence_maxsz 0
420 #define decode_sequence_maxsz 0
421 #define encode_layoutreturn_maxsz 0
422 #define decode_layoutreturn_maxsz 0
423 #endif /* CONFIG_NFS_V4_1 */
425 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
426 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
427 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
428 encode_sequence_maxsz + \
429 encode_putfh_maxsz + \
431 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
432 decode_sequence_maxsz + \
433 decode_putfh_maxsz + \
435 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
436 encode_sequence_maxsz + \
437 encode_putfh_maxsz + \
438 encode_readlink_maxsz)
439 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
440 decode_sequence_maxsz + \
441 decode_putfh_maxsz + \
442 decode_readlink_maxsz)
443 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
444 encode_sequence_maxsz + \
445 encode_putfh_maxsz + \
446 encode_readdir_maxsz)
447 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
448 decode_sequence_maxsz + \
449 decode_putfh_maxsz + \
450 decode_readdir_maxsz)
451 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
452 encode_sequence_maxsz + \
453 encode_putfh_maxsz + \
454 encode_write_maxsz + \
455 encode_getattr_maxsz)
456 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
457 decode_sequence_maxsz + \
458 decode_putfh_maxsz + \
459 decode_write_maxsz + \
460 decode_getattr_maxsz)
461 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
462 encode_sequence_maxsz + \
463 encode_putfh_maxsz + \
465 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
466 decode_sequence_maxsz + \
467 decode_putfh_maxsz + \
469 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
470 encode_sequence_maxsz + \
471 encode_putfh_maxsz + \
472 encode_open_maxsz + \
473 encode_access_maxsz + \
474 encode_getfh_maxsz + \
475 encode_getattr_maxsz)
476 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
477 decode_sequence_maxsz + \
478 decode_putfh_maxsz + \
479 decode_open_maxsz + \
480 decode_access_maxsz + \
481 decode_getfh_maxsz + \
482 decode_getattr_maxsz)
483 #define NFS4_enc_open_confirm_sz \
484 (compound_encode_hdr_maxsz + \
485 encode_putfh_maxsz + \
486 encode_open_confirm_maxsz)
487 #define NFS4_dec_open_confirm_sz \
488 (compound_decode_hdr_maxsz + \
489 decode_putfh_maxsz + \
490 decode_open_confirm_maxsz)
491 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
492 encode_sequence_maxsz + \
493 encode_putfh_maxsz + \
494 encode_open_maxsz + \
495 encode_access_maxsz + \
496 encode_getattr_maxsz)
497 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
498 decode_sequence_maxsz + \
499 decode_putfh_maxsz + \
500 decode_open_maxsz + \
501 decode_access_maxsz + \
502 decode_getattr_maxsz)
503 #define NFS4_enc_open_downgrade_sz \
504 (compound_encode_hdr_maxsz + \
505 encode_sequence_maxsz + \
506 encode_putfh_maxsz + \
507 encode_layoutreturn_maxsz + \
508 encode_open_downgrade_maxsz)
509 #define NFS4_dec_open_downgrade_sz \
510 (compound_decode_hdr_maxsz + \
511 decode_sequence_maxsz + \
512 decode_putfh_maxsz + \
513 decode_layoutreturn_maxsz + \
514 decode_open_downgrade_maxsz)
515 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
516 encode_sequence_maxsz + \
517 encode_putfh_maxsz + \
518 encode_layoutreturn_maxsz + \
519 encode_close_maxsz + \
520 encode_getattr_maxsz)
521 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
522 decode_sequence_maxsz + \
523 decode_putfh_maxsz + \
524 decode_layoutreturn_maxsz + \
525 decode_close_maxsz + \
526 decode_getattr_maxsz)
527 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
528 encode_sequence_maxsz + \
529 encode_putfh_maxsz + \
530 encode_setattr_maxsz + \
531 encode_getattr_maxsz)
532 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
533 decode_sequence_maxsz + \
534 decode_putfh_maxsz + \
535 decode_setattr_maxsz + \
536 decode_getattr_maxsz)
537 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
538 encode_sequence_maxsz + \
539 encode_putfh_maxsz + \
541 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
542 decode_sequence_maxsz + \
543 decode_putfh_maxsz + \
545 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
547 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
549 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
550 encode_setclientid_maxsz)
551 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
552 decode_setclientid_maxsz)
553 #define NFS4_enc_setclientid_confirm_sz \
554 (compound_encode_hdr_maxsz + \
555 encode_setclientid_confirm_maxsz)
556 #define NFS4_dec_setclientid_confirm_sz \
557 (compound_decode_hdr_maxsz + \
558 decode_setclientid_confirm_maxsz)
559 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
560 encode_sequence_maxsz + \
561 encode_putfh_maxsz + \
563 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
564 decode_sequence_maxsz + \
565 decode_putfh_maxsz + \
567 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
571 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
572 decode_sequence_maxsz + \
573 decode_putfh_maxsz + \
575 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
576 encode_sequence_maxsz + \
577 encode_putfh_maxsz + \
579 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
580 decode_sequence_maxsz + \
581 decode_putfh_maxsz + \
583 #define NFS4_enc_release_lockowner_sz \
584 (compound_encode_hdr_maxsz + \
585 encode_lockowner_maxsz)
586 #define NFS4_dec_release_lockowner_sz \
587 (compound_decode_hdr_maxsz + \
588 decode_lockowner_maxsz)
589 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
590 encode_sequence_maxsz + \
591 encode_putfh_maxsz + \
592 encode_access_maxsz + \
593 encode_getattr_maxsz)
594 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
595 decode_sequence_maxsz + \
596 decode_putfh_maxsz + \
597 decode_access_maxsz + \
598 decode_getattr_maxsz)
599 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
600 encode_sequence_maxsz + \
601 encode_putfh_maxsz + \
602 encode_getattr_maxsz + \
604 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
605 decode_sequence_maxsz + \
606 decode_putfh_maxsz + \
607 decode_getattr_maxsz + \
609 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
610 encode_sequence_maxsz + \
611 encode_putfh_maxsz + \
612 encode_lookup_maxsz + \
613 encode_getattr_maxsz + \
615 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
616 decode_sequence_maxsz + \
617 decode_putfh_maxsz + \
618 decode_lookup_maxsz + \
619 decode_getattr_maxsz + \
621 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
622 encode_sequence_maxsz + \
623 encode_putrootfh_maxsz + \
624 encode_getattr_maxsz + \
626 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
627 decode_sequence_maxsz + \
628 decode_putrootfh_maxsz + \
629 decode_getattr_maxsz + \
631 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
632 encode_sequence_maxsz + \
633 encode_putfh_maxsz + \
635 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
636 decode_sequence_maxsz + \
637 decode_putfh_maxsz + \
639 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
640 encode_sequence_maxsz + \
641 encode_putfh_maxsz + \
642 encode_savefh_maxsz + \
643 encode_putfh_maxsz + \
645 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
646 decode_sequence_maxsz + \
647 decode_putfh_maxsz + \
648 decode_savefh_maxsz + \
649 decode_putfh_maxsz + \
651 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
652 encode_sequence_maxsz + \
653 encode_putfh_maxsz + \
654 encode_savefh_maxsz + \
655 encode_putfh_maxsz + \
656 encode_link_maxsz + \
657 encode_restorefh_maxsz + \
658 encode_getattr_maxsz)
659 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
660 decode_sequence_maxsz + \
661 decode_putfh_maxsz + \
662 decode_savefh_maxsz + \
663 decode_putfh_maxsz + \
664 decode_link_maxsz + \
665 decode_restorefh_maxsz + \
666 decode_getattr_maxsz)
667 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
668 encode_sequence_maxsz + \
669 encode_putfh_maxsz + \
670 encode_symlink_maxsz + \
671 encode_getattr_maxsz + \
673 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
674 decode_sequence_maxsz + \
675 decode_putfh_maxsz + \
676 decode_symlink_maxsz + \
677 decode_getattr_maxsz + \
679 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
680 encode_sequence_maxsz + \
681 encode_putfh_maxsz + \
682 encode_create_maxsz + \
683 encode_getfh_maxsz + \
684 encode_getattr_maxsz)
685 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
686 decode_sequence_maxsz + \
687 decode_putfh_maxsz + \
688 decode_create_maxsz + \
689 decode_getfh_maxsz + \
690 decode_getattr_maxsz)
691 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
692 encode_sequence_maxsz + \
693 encode_putfh_maxsz + \
694 encode_getattr_maxsz)
695 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
696 decode_sequence_maxsz + \
697 decode_putfh_maxsz + \
698 decode_getattr_maxsz)
699 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
700 encode_sequence_maxsz + \
701 encode_putfh_maxsz + \
703 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
704 decode_sequence_maxsz + \
705 decode_putfh_maxsz + \
707 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
708 encode_sequence_maxsz + \
709 encode_putfh_maxsz + \
710 encode_getattr_maxsz)
711 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
712 decode_sequence_maxsz + \
713 decode_putfh_maxsz + \
714 decode_getattr_maxsz)
715 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
716 encode_sequence_maxsz + \
717 encode_putfh_maxsz + \
718 encode_layoutreturn_maxsz + \
719 encode_delegreturn_maxsz + \
720 encode_getattr_maxsz)
721 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
722 decode_sequence_maxsz + \
723 decode_putfh_maxsz + \
724 decode_layoutreturn_maxsz + \
725 decode_delegreturn_maxsz + \
726 decode_getattr_maxsz)
727 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
728 encode_sequence_maxsz + \
729 encode_putfh_maxsz + \
731 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
732 decode_sequence_maxsz + \
733 decode_putfh_maxsz + \
735 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
736 encode_sequence_maxsz + \
737 encode_putfh_maxsz + \
739 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
740 decode_sequence_maxsz + \
741 decode_putfh_maxsz + \
743 #define NFS4_enc_fs_locations_sz \
744 (compound_encode_hdr_maxsz + \
745 encode_sequence_maxsz + \
746 encode_putfh_maxsz + \
747 encode_lookup_maxsz + \
748 encode_fs_locations_maxsz + \
750 #define NFS4_dec_fs_locations_sz \
751 (compound_decode_hdr_maxsz + \
752 decode_sequence_maxsz + \
753 decode_putfh_maxsz + \
754 decode_lookup_maxsz + \
755 decode_fs_locations_maxsz + \
757 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
758 encode_sequence_maxsz + \
759 encode_putfh_maxsz + \
760 encode_secinfo_maxsz)
761 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
762 decode_sequence_maxsz + \
763 decode_putfh_maxsz + \
764 decode_secinfo_maxsz)
765 #define NFS4_enc_fsid_present_sz \
766 (compound_encode_hdr_maxsz + \
767 encode_sequence_maxsz + \
768 encode_putfh_maxsz + \
769 encode_getfh_maxsz + \
771 #define NFS4_dec_fsid_present_sz \
772 (compound_decode_hdr_maxsz + \
773 decode_sequence_maxsz + \
774 decode_putfh_maxsz + \
775 decode_getfh_maxsz + \
777 #if defined(CONFIG_NFS_V4_1)
778 #define NFS4_enc_bind_conn_to_session_sz \
779 (compound_encode_hdr_maxsz + \
780 encode_bind_conn_to_session_maxsz)
781 #define NFS4_dec_bind_conn_to_session_sz \
782 (compound_decode_hdr_maxsz + \
783 decode_bind_conn_to_session_maxsz)
784 #define NFS4_enc_exchange_id_sz \
785 (compound_encode_hdr_maxsz + \
786 encode_exchange_id_maxsz)
787 #define NFS4_dec_exchange_id_sz \
788 (compound_decode_hdr_maxsz + \
789 decode_exchange_id_maxsz)
790 #define NFS4_enc_create_session_sz \
791 (compound_encode_hdr_maxsz + \
792 encode_create_session_maxsz)
793 #define NFS4_dec_create_session_sz \
794 (compound_decode_hdr_maxsz + \
795 decode_create_session_maxsz)
796 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
797 encode_destroy_session_maxsz)
798 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
799 decode_destroy_session_maxsz)
800 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
801 encode_destroy_clientid_maxsz)
802 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
803 decode_destroy_clientid_maxsz)
804 #define NFS4_enc_sequence_sz \
805 (compound_decode_hdr_maxsz + \
806 encode_sequence_maxsz)
807 #define NFS4_dec_sequence_sz \
808 (compound_decode_hdr_maxsz + \
809 decode_sequence_maxsz)
810 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
811 encode_sequence_maxsz + \
812 encode_putrootfh_maxsz + \
814 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
815 decode_sequence_maxsz + \
816 decode_putrootfh_maxsz + \
818 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
819 encode_sequence_maxsz + \
820 encode_reclaim_complete_maxsz)
821 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
822 decode_sequence_maxsz + \
823 decode_reclaim_complete_maxsz)
824 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
825 encode_sequence_maxsz +\
826 encode_getdeviceinfo_maxsz)
827 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
828 decode_sequence_maxsz + \
829 decode_getdeviceinfo_maxsz)
830 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
831 encode_sequence_maxsz + \
832 encode_putfh_maxsz + \
833 encode_layoutget_maxsz)
834 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
835 decode_sequence_maxsz + \
836 decode_putfh_maxsz + \
837 decode_layoutget_maxsz)
838 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
839 encode_sequence_maxsz +\
840 encode_putfh_maxsz + \
841 encode_layoutcommit_maxsz + \
842 encode_getattr_maxsz)
843 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
844 decode_sequence_maxsz + \
845 decode_putfh_maxsz + \
846 decode_layoutcommit_maxsz + \
847 decode_getattr_maxsz)
848 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
849 encode_sequence_maxsz + \
850 encode_putfh_maxsz + \
851 encode_layoutreturn_maxsz)
852 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
853 decode_sequence_maxsz + \
854 decode_putfh_maxsz + \
855 decode_layoutreturn_maxsz)
856 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
857 encode_sequence_maxsz + \
858 encode_putrootfh_maxsz +\
859 encode_secinfo_no_name_maxsz)
860 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
861 decode_sequence_maxsz + \
862 decode_putrootfh_maxsz + \
863 decode_secinfo_no_name_maxsz)
864 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
865 encode_sequence_maxsz + \
866 encode_test_stateid_maxsz)
867 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
868 decode_sequence_maxsz + \
869 decode_test_stateid_maxsz)
870 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
871 encode_sequence_maxsz + \
872 encode_free_stateid_maxsz)
873 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
874 decode_sequence_maxsz + \
875 decode_free_stateid_maxsz)
877 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
878 compound_encode_hdr_maxsz +
879 encode_sequence_maxsz +
881 encode_getattr_maxsz) *
884 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
885 compound_decode_hdr_maxsz +
886 decode_sequence_maxsz +
887 decode_putfh_maxsz) *
890 const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
891 compound_decode_hdr_maxsz +
892 decode_sequence_maxsz) *
894 EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
895 #endif /* CONFIG_NFS_V4_1 */
897 static const umode_t nfs_type2fmt[] = {
904 [NF4SOCK] = S_IFSOCK,
910 struct compound_hdr {
916 uint32_t replen; /* expected reply words */
920 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
922 __be32 *p = xdr_reserve_space(xdr, nbytes);
927 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
929 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0);
932 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
934 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0);
937 static void encode_uint32(struct xdr_stream *xdr, u32 n)
939 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
942 static void encode_uint64(struct xdr_stream *xdr, u64 n)
944 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
947 static void encode_nfs4_seqid(struct xdr_stream *xdr,
948 const struct nfs_seqid *seqid)
951 encode_uint32(xdr, seqid->sequence->counter);
953 encode_uint32(xdr, 0);
956 static void encode_compound_hdr(struct xdr_stream *xdr,
957 struct rpc_rqst *req,
958 struct compound_hdr *hdr)
961 struct rpc_auth *auth = req->rq_cred->cr_auth;
963 /* initialize running count of expected bytes in reply.
964 * NOTE: the replied tag SHOULD be the same is the one sent,
965 * but this is not required as a MUST for the server to do so. */
966 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
968 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
969 encode_string(xdr, hdr->taglen, hdr->tag);
970 p = reserve_space(xdr, 8);
971 *p++ = cpu_to_be32(hdr->minorversion);
973 *p = cpu_to_be32(hdr->nops);
976 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
978 struct compound_hdr *hdr)
980 encode_uint32(xdr, op);
982 hdr->replen += replen;
985 static void encode_nops(struct compound_hdr *hdr)
987 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
988 *hdr->nops_p = htonl(hdr->nops);
991 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
993 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
996 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
998 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
1001 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1002 const struct nfs4_label *label,
1003 const umode_t *umask,
1004 const struct nfs_server *server,
1005 const uint32_t attrmask[])
1007 char owner_name[IDMAP_NAMESZ];
1008 char owner_group[IDMAP_NAMESZ];
1009 int owner_namelen = 0;
1010 int owner_grouplen = 0;
1015 uint32_t bmval[3] = { 0 };
1018 * We reserve enough space to write the entire attribute buffer at once.
1020 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) {
1021 bmval[0] |= FATTR4_WORD0_SIZE;
1024 if (iap->ia_valid & ATTR_MODE) {
1025 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) {
1026 bmval[2] |= FATTR4_WORD2_MODE_UMASK;
1028 } else if (attrmask[1] & FATTR4_WORD1_MODE) {
1029 bmval[1] |= FATTR4_WORD1_MODE;
1033 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) {
1034 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1035 if (owner_namelen < 0) {
1036 dprintk("nfs: couldn't resolve uid %d to string\n",
1037 from_kuid(&init_user_ns, iap->ia_uid));
1039 strcpy(owner_name, "nobody");
1040 owner_namelen = sizeof("nobody") - 1;
1043 bmval[1] |= FATTR4_WORD1_OWNER;
1044 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1046 if ((iap->ia_valid & ATTR_GID) &&
1047 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) {
1048 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1049 if (owner_grouplen < 0) {
1050 dprintk("nfs: couldn't resolve gid %d to string\n",
1051 from_kgid(&init_user_ns, iap->ia_gid));
1052 strcpy(owner_group, "nobody");
1053 owner_grouplen = sizeof("nobody") - 1;
1056 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
1057 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1059 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1060 if (iap->ia_valid & ATTR_ATIME_SET) {
1061 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1063 } else if (iap->ia_valid & ATTR_ATIME) {
1064 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1068 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1069 if (iap->ia_valid & ATTR_MTIME_SET) {
1070 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1072 } else if (iap->ia_valid & ATTR_MTIME) {
1073 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1078 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) {
1079 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1080 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1085 else if (bmval[1] != 0)
1090 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
1092 *p++ = cpu_to_be32(bmval_len);
1093 for (i = 0; i < bmval_len; i++)
1094 *p++ = cpu_to_be32(bmval[i]);
1095 *p++ = cpu_to_be32(len);
1097 if (bmval[0] & FATTR4_WORD0_SIZE)
1098 p = xdr_encode_hyper(p, iap->ia_size);
1099 if (bmval[1] & FATTR4_WORD1_MODE)
1100 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1101 if (bmval[1] & FATTR4_WORD1_OWNER)
1102 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1103 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1104 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1105 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1106 if (iap->ia_valid & ATTR_ATIME_SET) {
1107 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1108 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1109 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1111 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1113 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1114 if (iap->ia_valid & ATTR_MTIME_SET) {
1115 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1116 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1117 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1119 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1121 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
1122 *p++ = cpu_to_be32(label->lfs);
1123 *p++ = cpu_to_be32(label->pi);
1124 *p++ = cpu_to_be32(label->len);
1125 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1127 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) {
1128 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1129 *p++ = cpu_to_be32(*umask);
1135 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1137 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1138 encode_uint32(xdr, access);
1141 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1143 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1144 encode_nfs4_seqid(xdr, arg->seqid);
1145 encode_nfs4_stateid(xdr, &arg->stateid);
1148 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1152 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1153 p = reserve_space(xdr, 12);
1154 p = xdr_encode_hyper(p, args->offset);
1155 *p = cpu_to_be32(args->count);
1158 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1162 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1163 encode_uint32(xdr, create->ftype);
1165 switch (create->ftype) {
1167 p = reserve_space(xdr, 4);
1168 *p = cpu_to_be32(create->u.symlink.len);
1169 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1170 create->u.symlink.len);
1171 xdr->buf->flags |= XDRBUF_WRITE;
1174 case NF4BLK: case NF4CHR:
1175 p = reserve_space(xdr, 8);
1176 *p++ = cpu_to_be32(create->u.device.specdata1);
1177 *p = cpu_to_be32(create->u.device.specdata2);
1184 encode_string(xdr, create->name->len, create->name->name);
1185 encode_attrs(xdr, create->attrs, create->label, &create->umask,
1186 create->server, create->server->attr_bitmask);
1189 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1193 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1194 p = reserve_space(xdr, 8);
1195 *p++ = cpu_to_be32(1);
1196 *p = cpu_to_be32(bitmap);
1199 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1203 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1204 p = reserve_space(xdr, 12);
1205 *p++ = cpu_to_be32(2);
1206 *p++ = cpu_to_be32(bm0);
1207 *p = cpu_to_be32(bm1);
1211 encode_getattr_three(struct xdr_stream *xdr,
1212 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1213 struct compound_hdr *hdr)
1217 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1219 p = reserve_space(xdr, 16);
1220 *p++ = cpu_to_be32(3);
1221 *p++ = cpu_to_be32(bm0);
1222 *p++ = cpu_to_be32(bm1);
1223 *p = cpu_to_be32(bm2);
1225 p = reserve_space(xdr, 12);
1226 *p++ = cpu_to_be32(2);
1227 *p++ = cpu_to_be32(bm0);
1228 *p = cpu_to_be32(bm1);
1230 p = reserve_space(xdr, 8);
1231 *p++ = cpu_to_be32(1);
1232 *p = cpu_to_be32(bm0);
1236 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1238 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1239 bitmask[1] & nfs4_fattr_bitmap[1],
1240 bitmask[2] & nfs4_fattr_bitmap[2],
1244 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1245 const u32 *open_bitmap,
1246 struct compound_hdr *hdr)
1248 encode_getattr_three(xdr,
1249 bitmask[0] & open_bitmap[0],
1250 bitmask[1] & open_bitmap[1],
1251 bitmask[2] & open_bitmap[2],
1255 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1257 encode_getattr_three(xdr,
1258 bitmask[0] & nfs4_fsinfo_bitmap[0],
1259 bitmask[1] & nfs4_fsinfo_bitmap[1],
1260 bitmask[2] & nfs4_fsinfo_bitmap[2],
1264 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1266 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1267 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1270 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1272 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1275 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1277 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1278 encode_string(xdr, name->len, name->name);
1281 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1283 if (fl->fl_type == F_RDLCK)
1284 return block ? NFS4_READW_LT : NFS4_READ_LT;
1285 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1288 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1290 if (fl->fl_end == OFFSET_MAX)
1291 return ~(uint64_t)0;
1292 return fl->fl_end - fl->fl_start + 1;
1295 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1299 p = reserve_space(xdr, 32);
1300 p = xdr_encode_hyper(p, lowner->clientid);
1301 *p++ = cpu_to_be32(20);
1302 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1303 *p++ = cpu_to_be32(lowner->s_dev);
1304 xdr_encode_hyper(p, lowner->id);
1308 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1309 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1311 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1315 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1316 p = reserve_space(xdr, 28);
1317 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1318 *p++ = cpu_to_be32(args->reclaim);
1319 p = xdr_encode_hyper(p, args->fl->fl_start);
1320 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1321 *p = cpu_to_be32(args->new_lock_owner);
1322 if (args->new_lock_owner){
1323 encode_nfs4_seqid(xdr, args->open_seqid);
1324 encode_nfs4_stateid(xdr, &args->open_stateid);
1325 encode_nfs4_seqid(xdr, args->lock_seqid);
1326 encode_lockowner(xdr, &args->lock_owner);
1329 encode_nfs4_stateid(xdr, &args->lock_stateid);
1330 encode_nfs4_seqid(xdr, args->lock_seqid);
1334 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1338 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1339 p = reserve_space(xdr, 20);
1340 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1341 p = xdr_encode_hyper(p, args->fl->fl_start);
1342 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1343 encode_lockowner(xdr, &args->lock_owner);
1346 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1350 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1351 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1352 encode_nfs4_seqid(xdr, args->seqid);
1353 encode_nfs4_stateid(xdr, &args->stateid);
1354 p = reserve_space(xdr, 16);
1355 p = xdr_encode_hyper(p, args->fl->fl_start);
1356 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1359 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1361 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1362 encode_lockowner(xdr, lowner);
1365 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1367 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1368 encode_string(xdr, name->len, name->name);
1371 static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
1375 p = reserve_space(xdr, 8);
1376 *p++ = cpu_to_be32(share_access);
1377 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1380 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1384 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1387 encode_nfs4_seqid(xdr, arg->seqid);
1388 encode_share_access(xdr, arg->share_access);
1389 p = reserve_space(xdr, 36);
1390 p = xdr_encode_hyper(p, arg->clientid);
1391 *p++ = cpu_to_be32(24);
1392 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1393 *p++ = cpu_to_be32(arg->server->s_dev);
1394 *p++ = cpu_to_be32(arg->id.uniquifier);
1395 xdr_encode_hyper(p, arg->id.create_time);
1398 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1402 p = reserve_space(xdr, 4);
1403 switch(arg->createmode) {
1404 case NFS4_CREATE_UNCHECKED:
1405 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1406 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1407 arg->server, arg->server->attr_bitmask);
1409 case NFS4_CREATE_GUARDED:
1410 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1411 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1412 arg->server, arg->server->attr_bitmask);
1414 case NFS4_CREATE_EXCLUSIVE:
1415 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1416 encode_nfs4_verifier(xdr, &arg->u.verifier);
1418 case NFS4_CREATE_EXCLUSIVE4_1:
1419 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1420 encode_nfs4_verifier(xdr, &arg->u.verifier);
1421 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask,
1422 arg->server, arg->server->exclcreat_bitmask);
1426 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1430 p = reserve_space(xdr, 4);
1431 switch (arg->open_flags & O_CREAT) {
1433 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1436 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1437 encode_createmode(xdr, arg);
1441 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1445 p = reserve_space(xdr, 4);
1446 switch (delegation_type) {
1448 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1451 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1453 case FMODE_WRITE|FMODE_READ:
1454 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1461 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1465 p = reserve_space(xdr, 4);
1466 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1467 encode_string(xdr, name->len, name->name);
1470 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1474 p = reserve_space(xdr, 4);
1475 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1476 encode_delegation_type(xdr, type);
1479 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1483 p = reserve_space(xdr, 4);
1484 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1485 encode_nfs4_stateid(xdr, stateid);
1486 encode_string(xdr, name->len, name->name);
1489 static inline void encode_claim_fh(struct xdr_stream *xdr)
1493 p = reserve_space(xdr, 4);
1494 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1497 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1501 p = reserve_space(xdr, 4);
1502 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1503 encode_nfs4_stateid(xdr, stateid);
1506 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1508 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1509 encode_openhdr(xdr, arg);
1510 encode_opentype(xdr, arg);
1511 switch (arg->claim) {
1512 case NFS4_OPEN_CLAIM_NULL:
1513 encode_claim_null(xdr, arg->name);
1515 case NFS4_OPEN_CLAIM_PREVIOUS:
1516 encode_claim_previous(xdr, arg->u.delegation_type);
1518 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1519 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1521 case NFS4_OPEN_CLAIM_FH:
1522 encode_claim_fh(xdr);
1524 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1525 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1532 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1534 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1535 encode_nfs4_stateid(xdr, arg->stateid);
1536 encode_nfs4_seqid(xdr, arg->seqid);
1539 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1541 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1542 encode_nfs4_stateid(xdr, &arg->stateid);
1543 encode_nfs4_seqid(xdr, arg->seqid);
1544 encode_share_access(xdr, arg->share_access);
1548 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1550 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1551 encode_string(xdr, fh->size, fh->data);
1554 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1556 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1559 static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1560 struct compound_hdr *hdr)
1564 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1565 encode_nfs4_stateid(xdr, &args->stateid);
1567 p = reserve_space(xdr, 12);
1568 p = xdr_encode_hyper(p, args->offset);
1569 *p = cpu_to_be32(args->count);
1572 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1574 uint32_t attrs[3] = {
1575 FATTR4_WORD0_RDATTR_ERROR,
1576 FATTR4_WORD1_MOUNTED_ON_FILEID,
1578 uint32_t dircount = readdir->count >> 1;
1580 uint32_t attrlen = 0;
1583 if (readdir->plus) {
1584 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1585 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1586 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1587 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1588 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1589 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1590 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1593 /* Use mounted_on_fileid only if the server supports it */
1594 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1595 attrs[0] |= FATTR4_WORD0_FILEID;
1596 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1597 attrs[i] &= readdir->bitmask[i];
1602 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1603 encode_uint64(xdr, readdir->cookie);
1604 encode_nfs4_verifier(xdr, &readdir->verifier);
1605 p = reserve_space(xdr, 12 + (attrlen << 2));
1606 *p++ = cpu_to_be32(dircount);
1607 *p++ = cpu_to_be32(readdir->count);
1608 *p++ = cpu_to_be32(attrlen);
1609 for (i = 0; i < attrlen; i++)
1610 *p++ = cpu_to_be32(attrs[i]);
1611 memcpy(verf, readdir->verifier.data, sizeof(verf));
1613 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1615 (unsigned long long)readdir->cookie,
1617 attrs[0] & readdir->bitmask[0],
1618 attrs[1] & readdir->bitmask[1],
1619 attrs[2] & readdir->bitmask[2]);
1622 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1624 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1627 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1629 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1630 encode_string(xdr, name->len, name->name);
1633 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1635 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1636 encode_string(xdr, oldname->len, oldname->name);
1637 encode_string(xdr, newname->len, newname->name);
1640 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1641 struct compound_hdr *hdr)
1643 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1644 encode_uint64(xdr, clid);
1648 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1650 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1654 encode_setacl(struct xdr_stream *xdr, const struct nfs_setaclargs *arg,
1655 struct compound_hdr *hdr)
1659 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1660 encode_nfs4_stateid(xdr, &zero_stateid);
1661 p = reserve_space(xdr, 2*4);
1662 *p++ = cpu_to_be32(1);
1663 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1664 p = reserve_space(xdr, 4);
1665 *p = cpu_to_be32(arg->acl_len);
1666 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
1670 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1672 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1675 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1677 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1678 encode_nfs4_stateid(xdr, &arg->stateid);
1679 encode_attrs(xdr, arg->iap, arg->label, NULL, server,
1680 server->attr_bitmask);
1683 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1687 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1688 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1690 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1691 setclientid->sc_clnt->cl_owner_id);
1692 p = reserve_space(xdr, 4);
1693 *p = cpu_to_be32(setclientid->sc_prog);
1694 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1695 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1696 p = reserve_space(xdr, 4);
1697 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
1700 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1702 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1703 decode_setclientid_confirm_maxsz, hdr);
1704 encode_uint64(xdr, arg->clientid);
1705 encode_nfs4_verifier(xdr, &arg->confirm);
1708 static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1709 struct compound_hdr *hdr)
1713 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1714 encode_nfs4_stateid(xdr, &args->stateid);
1716 p = reserve_space(xdr, 16);
1717 p = xdr_encode_hyper(p, args->offset);
1718 *p++ = cpu_to_be32(args->stable);
1719 *p = cpu_to_be32(args->count);
1721 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1724 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1726 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1727 encode_nfs4_stateid(xdr, stateid);
1730 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1732 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1733 encode_string(xdr, name->len, name->name);
1736 #if defined(CONFIG_NFS_V4_1)
1737 /* NFSv4.1 operations */
1738 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1739 const struct nfs41_bind_conn_to_session_args *args,
1740 struct compound_hdr *hdr)
1744 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1745 decode_bind_conn_to_session_maxsz, hdr);
1746 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1747 p = xdr_reserve_space(xdr, 8);
1748 *p++ = cpu_to_be32(args->dir);
1749 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
1752 static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map)
1755 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1756 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1757 encode_uint32(xdr, op_map->u.words[i]);
1760 static void encode_exchange_id(struct xdr_stream *xdr,
1761 const struct nfs41_exchange_id_args *args,
1762 struct compound_hdr *hdr)
1765 char impl_name[IMPL_NAME_LIMIT];
1768 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1769 encode_nfs4_verifier(xdr, args->verifier);
1771 encode_string(xdr, strlen(args->client->cl_owner_id),
1772 args->client->cl_owner_id);
1774 encode_uint32(xdr, args->flags);
1775 encode_uint32(xdr, args->state_protect.how);
1777 switch (args->state_protect.how) {
1781 encode_op_map(xdr, &args->state_protect.enforce);
1782 encode_op_map(xdr, &args->state_protect.allow);
1789 if (send_implementation_id &&
1790 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1791 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1792 <= sizeof(impl_name) + 1)
1793 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1794 utsname()->sysname, utsname()->release,
1795 utsname()->version, utsname()->machine);
1798 encode_uint32(xdr, 1); /* implementation id array length=1 */
1801 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1802 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1803 encode_string(xdr, len, impl_name);
1804 /* just send zeros for nii_date - the date is in nii_name */
1805 p = reserve_space(xdr, 12);
1806 p = xdr_encode_hyper(p, 0);
1807 *p = cpu_to_be32(0);
1809 encode_uint32(xdr, 0); /* implementation id array length=0 */
1812 static void encode_create_session(struct xdr_stream *xdr,
1813 const struct nfs41_create_session_args *args,
1814 struct compound_hdr *hdr)
1817 struct nfs_client *clp = args->client;
1818 struct rpc_clnt *clnt = clp->cl_rpcclient;
1819 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1820 u32 max_resp_sz_cached;
1823 * Assumes OPEN is the biggest non-idempotent compound.
1824 * 2 is the verifier.
1826 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1827 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1829 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1830 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
1831 p = xdr_encode_hyper(p, args->clientid);
1832 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
1833 *p++ = cpu_to_be32(args->flags); /*flags */
1836 *p++ = cpu_to_be32(0); /* header padding size */
1837 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1838 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1839 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1840 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1841 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1842 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1845 *p++ = cpu_to_be32(0); /* header padding size */
1846 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1847 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1848 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1849 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1850 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1851 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1853 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1854 *p++ = cpu_to_be32(1);
1855 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1857 /* authsys_parms rfc1831 */
1858 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */
1859 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
1860 *p++ = cpu_to_be32(0); /* UID */
1861 *p++ = cpu_to_be32(0); /* GID */
1862 *p = cpu_to_be32(0); /* No more gids */
1865 static void encode_destroy_session(struct xdr_stream *xdr,
1866 const struct nfs4_session *session,
1867 struct compound_hdr *hdr)
1869 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1870 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1873 static void encode_destroy_clientid(struct xdr_stream *xdr,
1875 struct compound_hdr *hdr)
1877 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1878 encode_uint64(xdr, clientid);
1881 static void encode_reclaim_complete(struct xdr_stream *xdr,
1882 const struct nfs41_reclaim_complete_args *args,
1883 struct compound_hdr *hdr)
1885 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1886 encode_uint32(xdr, args->one_fs);
1888 #endif /* CONFIG_NFS_V4_1 */
1890 static void encode_sequence(struct xdr_stream *xdr,
1891 const struct nfs4_sequence_args *args,
1892 struct compound_hdr *hdr)
1894 #if defined(CONFIG_NFS_V4_1)
1895 struct nfs4_session *session;
1896 struct nfs4_slot_table *tp;
1897 struct nfs4_slot *slot = args->sa_slot;
1901 session = tp->session;
1905 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1908 * Sessionid + seqid + slotid + max slotid + cache_this
1910 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1911 "max_slotid=%d cache_this=%d\n",
1913 ((u32 *)session->sess_id.data)[0],
1914 ((u32 *)session->sess_id.data)[1],
1915 ((u32 *)session->sess_id.data)[2],
1916 ((u32 *)session->sess_id.data)[3],
1917 slot->seq_nr, slot->slot_nr,
1918 tp->highest_used_slotid, args->sa_cache_this);
1919 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1920 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1921 *p++ = cpu_to_be32(slot->seq_nr);
1922 *p++ = cpu_to_be32(slot->slot_nr);
1923 *p++ = cpu_to_be32(tp->highest_used_slotid);
1924 *p = cpu_to_be32(args->sa_cache_this);
1925 #endif /* CONFIG_NFS_V4_1 */
1928 #ifdef CONFIG_NFS_V4_1
1930 encode_getdeviceinfo(struct xdr_stream *xdr,
1931 const struct nfs4_getdeviceinfo_args *args,
1932 struct compound_hdr *hdr)
1936 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1937 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
1938 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1939 NFS4_DEVICEID4_SIZE);
1940 *p++ = cpu_to_be32(args->pdev->layout_type);
1941 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
1943 p = reserve_space(xdr, 4 + 4);
1944 *p++ = cpu_to_be32(1); /* bitmap length */
1945 *p++ = cpu_to_be32(args->notify_types);
1949 encode_layoutget(struct xdr_stream *xdr,
1950 const struct nfs4_layoutget_args *args,
1951 struct compound_hdr *hdr)
1955 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1956 p = reserve_space(xdr, 36);
1957 *p++ = cpu_to_be32(0); /* Signal layout available */
1958 *p++ = cpu_to_be32(args->type);
1959 *p++ = cpu_to_be32(args->range.iomode);
1960 p = xdr_encode_hyper(p, args->range.offset);
1961 p = xdr_encode_hyper(p, args->range.length);
1962 p = xdr_encode_hyper(p, args->minlength);
1963 encode_nfs4_stateid(xdr, &args->stateid);
1964 encode_uint32(xdr, args->maxcount);
1966 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1970 (unsigned long)args->range.offset,
1971 (unsigned long)args->range.length,
1976 encode_layoutcommit(struct xdr_stream *xdr,
1977 struct inode *inode,
1978 const struct nfs4_layoutcommit_args *args,
1979 struct compound_hdr *hdr)
1983 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1984 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1986 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1987 p = reserve_space(xdr, 20);
1988 /* Only whole file layouts */
1989 p = xdr_encode_hyper(p, 0); /* offset */
1990 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1991 *p = cpu_to_be32(0); /* reclaim */
1992 encode_nfs4_stateid(xdr, &args->stateid);
1993 if (args->lastbytewritten != U64_MAX) {
1994 p = reserve_space(xdr, 20);
1995 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1996 p = xdr_encode_hyper(p, args->lastbytewritten);
1998 p = reserve_space(xdr, 12);
1999 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
2001 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
2002 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
2004 encode_uint32(xdr, args->layoutupdate_len);
2005 if (args->layoutupdate_pages)
2006 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2007 args->layoutupdate_len);
2013 encode_layoutreturn(struct xdr_stream *xdr,
2014 const struct nfs4_layoutreturn_args *args,
2015 struct compound_hdr *hdr)
2019 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2020 p = reserve_space(xdr, 16);
2021 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2022 *p++ = cpu_to_be32(args->layout_type);
2023 *p++ = cpu_to_be32(args->range.iomode);
2024 *p = cpu_to_be32(RETURN_FILE);
2025 p = reserve_space(xdr, 16);
2026 p = xdr_encode_hyper(p, args->range.offset);
2027 p = xdr_encode_hyper(p, args->range.length);
2028 spin_lock(&args->inode->i_lock);
2029 encode_nfs4_stateid(xdr, &args->stateid);
2030 spin_unlock(&args->inode->i_lock);
2031 if (args->ld_private->ops && args->ld_private->ops->encode)
2032 args->ld_private->ops->encode(xdr, args, args->ld_private);
2034 encode_uint32(xdr, 0);
2038 encode_secinfo_no_name(struct xdr_stream *xdr,
2039 const struct nfs41_secinfo_no_name_args *args,
2040 struct compound_hdr *hdr)
2042 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2043 encode_uint32(xdr, args->style);
2047 static void encode_test_stateid(struct xdr_stream *xdr,
2048 const struct nfs41_test_stateid_args *args,
2049 struct compound_hdr *hdr)
2051 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2052 encode_uint32(xdr, 1);
2053 encode_nfs4_stateid(xdr, args->stateid);
2056 static void encode_free_stateid(struct xdr_stream *xdr,
2057 const struct nfs41_free_stateid_args *args,
2058 struct compound_hdr *hdr)
2060 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2061 encode_nfs4_stateid(xdr, &args->stateid);
2065 encode_layoutreturn(struct xdr_stream *xdr,
2066 const struct nfs4_layoutreturn_args *args,
2067 struct compound_hdr *hdr)
2070 #endif /* CONFIG_NFS_V4_1 */
2073 * END OF "GENERIC" ENCODE ROUTINES.
2076 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2078 #if defined(CONFIG_NFS_V4_1)
2079 struct nfs4_session *session = args->sa_slot->table->session;
2081 return session->clp->cl_mvops->minor_version;
2082 #endif /* CONFIG_NFS_V4_1 */
2087 * Encode an ACCESS request
2089 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2092 const struct nfs4_accessargs *args = data;
2093 struct compound_hdr hdr = {
2094 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2097 encode_compound_hdr(xdr, req, &hdr);
2098 encode_sequence(xdr, &args->seq_args, &hdr);
2099 encode_putfh(xdr, args->fh, &hdr);
2100 encode_access(xdr, args->access, &hdr);
2101 encode_getfattr(xdr, args->bitmask, &hdr);
2106 * Encode LOOKUP request
2108 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2111 const struct nfs4_lookup_arg *args = data;
2112 struct compound_hdr hdr = {
2113 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2116 encode_compound_hdr(xdr, req, &hdr);
2117 encode_sequence(xdr, &args->seq_args, &hdr);
2118 encode_putfh(xdr, args->dir_fh, &hdr);
2119 encode_lookup(xdr, args->name, &hdr);
2120 encode_getfh(xdr, &hdr);
2121 encode_getfattr(xdr, args->bitmask, &hdr);
2126 * Encode LOOKUP_ROOT request
2128 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2129 struct xdr_stream *xdr,
2132 const struct nfs4_lookup_root_arg *args = data;
2133 struct compound_hdr hdr = {
2134 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2137 encode_compound_hdr(xdr, req, &hdr);
2138 encode_sequence(xdr, &args->seq_args, &hdr);
2139 encode_putrootfh(xdr, &hdr);
2140 encode_getfh(xdr, &hdr);
2141 encode_getfattr(xdr, args->bitmask, &hdr);
2146 * Encode REMOVE request
2148 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2151 const struct nfs_removeargs *args = data;
2152 struct compound_hdr hdr = {
2153 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2156 encode_compound_hdr(xdr, req, &hdr);
2157 encode_sequence(xdr, &args->seq_args, &hdr);
2158 encode_putfh(xdr, args->fh, &hdr);
2159 encode_remove(xdr, &args->name, &hdr);
2164 * Encode RENAME request
2166 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2169 const struct nfs_renameargs *args = data;
2170 struct compound_hdr hdr = {
2171 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2174 encode_compound_hdr(xdr, req, &hdr);
2175 encode_sequence(xdr, &args->seq_args, &hdr);
2176 encode_putfh(xdr, args->old_dir, &hdr);
2177 encode_savefh(xdr, &hdr);
2178 encode_putfh(xdr, args->new_dir, &hdr);
2179 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2184 * Encode LINK request
2186 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2189 const struct nfs4_link_arg *args = data;
2190 struct compound_hdr hdr = {
2191 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2194 encode_compound_hdr(xdr, req, &hdr);
2195 encode_sequence(xdr, &args->seq_args, &hdr);
2196 encode_putfh(xdr, args->fh, &hdr);
2197 encode_savefh(xdr, &hdr);
2198 encode_putfh(xdr, args->dir_fh, &hdr);
2199 encode_link(xdr, args->name, &hdr);
2200 encode_restorefh(xdr, &hdr);
2201 encode_getfattr(xdr, args->bitmask, &hdr);
2206 * Encode CREATE request
2208 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2211 const struct nfs4_create_arg *args = data;
2212 struct compound_hdr hdr = {
2213 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2216 encode_compound_hdr(xdr, req, &hdr);
2217 encode_sequence(xdr, &args->seq_args, &hdr);
2218 encode_putfh(xdr, args->dir_fh, &hdr);
2219 encode_create(xdr, args, &hdr);
2220 encode_getfh(xdr, &hdr);
2221 encode_getfattr(xdr, args->bitmask, &hdr);
2226 * Encode SYMLINK request
2228 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2231 const struct nfs4_create_arg *args = data;
2233 nfs4_xdr_enc_create(req, xdr, args);
2237 * Encode GETATTR request
2239 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2242 const struct nfs4_getattr_arg *args = data;
2243 struct compound_hdr hdr = {
2244 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2247 encode_compound_hdr(xdr, req, &hdr);
2248 encode_sequence(xdr, &args->seq_args, &hdr);
2249 encode_putfh(xdr, args->fh, &hdr);
2250 encode_getfattr(xdr, args->bitmask, &hdr);
2255 * Encode a CLOSE request
2257 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2260 const struct nfs_closeargs *args = data;
2261 struct compound_hdr hdr = {
2262 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2265 encode_compound_hdr(xdr, req, &hdr);
2266 encode_sequence(xdr, &args->seq_args, &hdr);
2267 encode_putfh(xdr, args->fh, &hdr);
2269 encode_layoutreturn(xdr, args->lr_args, &hdr);
2270 if (args->bitmask != NULL)
2271 encode_getfattr(xdr, args->bitmask, &hdr);
2272 encode_close(xdr, args, &hdr);
2277 * Encode an OPEN request
2279 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2282 const struct nfs_openargs *args = data;
2283 struct compound_hdr hdr = {
2284 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2287 encode_compound_hdr(xdr, req, &hdr);
2288 encode_sequence(xdr, &args->seq_args, &hdr);
2289 encode_putfh(xdr, args->fh, &hdr);
2290 encode_open(xdr, args, &hdr);
2291 encode_getfh(xdr, &hdr);
2293 encode_access(xdr, args->access, &hdr);
2294 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2299 * Encode an OPEN_CONFIRM request
2301 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2302 struct xdr_stream *xdr,
2305 const struct nfs_open_confirmargs *args = data;
2306 struct compound_hdr hdr = {
2310 encode_compound_hdr(xdr, req, &hdr);
2311 encode_putfh(xdr, args->fh, &hdr);
2312 encode_open_confirm(xdr, args, &hdr);
2317 * Encode an OPEN request with no attributes.
2319 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2320 struct xdr_stream *xdr,
2323 const struct nfs_openargs *args = data;
2324 struct compound_hdr hdr = {
2325 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2328 encode_compound_hdr(xdr, req, &hdr);
2329 encode_sequence(xdr, &args->seq_args, &hdr);
2330 encode_putfh(xdr, args->fh, &hdr);
2331 encode_open(xdr, args, &hdr);
2333 encode_access(xdr, args->access, &hdr);
2334 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2339 * Encode an OPEN_DOWNGRADE request
2341 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2342 struct xdr_stream *xdr,
2345 const struct nfs_closeargs *args = data;
2346 struct compound_hdr hdr = {
2347 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2350 encode_compound_hdr(xdr, req, &hdr);
2351 encode_sequence(xdr, &args->seq_args, &hdr);
2352 encode_putfh(xdr, args->fh, &hdr);
2354 encode_layoutreturn(xdr, args->lr_args, &hdr);
2355 encode_open_downgrade(xdr, args, &hdr);
2360 * Encode a LOCK request
2362 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2365 const struct nfs_lock_args *args = data;
2366 struct compound_hdr hdr = {
2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2370 encode_compound_hdr(xdr, req, &hdr);
2371 encode_sequence(xdr, &args->seq_args, &hdr);
2372 encode_putfh(xdr, args->fh, &hdr);
2373 encode_lock(xdr, args, &hdr);
2378 * Encode a LOCKT request
2380 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2383 const struct nfs_lockt_args *args = data;
2384 struct compound_hdr hdr = {
2385 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2388 encode_compound_hdr(xdr, req, &hdr);
2389 encode_sequence(xdr, &args->seq_args, &hdr);
2390 encode_putfh(xdr, args->fh, &hdr);
2391 encode_lockt(xdr, args, &hdr);
2396 * Encode a LOCKU request
2398 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2401 const struct nfs_locku_args *args = data;
2402 struct compound_hdr hdr = {
2403 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2406 encode_compound_hdr(xdr, req, &hdr);
2407 encode_sequence(xdr, &args->seq_args, &hdr);
2408 encode_putfh(xdr, args->fh, &hdr);
2409 encode_locku(xdr, args, &hdr);
2413 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2414 struct xdr_stream *xdr,
2417 const struct nfs_release_lockowner_args *args = data;
2418 struct compound_hdr hdr = {
2422 encode_compound_hdr(xdr, req, &hdr);
2423 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2428 * Encode a READLINK request
2430 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2433 const struct nfs4_readlink *args = data;
2434 struct compound_hdr hdr = {
2435 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2438 encode_compound_hdr(xdr, req, &hdr);
2439 encode_sequence(xdr, &args->seq_args, &hdr);
2440 encode_putfh(xdr, args->fh, &hdr);
2441 encode_readlink(xdr, args, req, &hdr);
2443 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2444 args->pgbase, args->pglen);
2449 * Encode a READDIR request
2451 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2454 const struct nfs4_readdir_arg *args = data;
2455 struct compound_hdr hdr = {
2456 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2459 encode_compound_hdr(xdr, req, &hdr);
2460 encode_sequence(xdr, &args->seq_args, &hdr);
2461 encode_putfh(xdr, args->fh, &hdr);
2462 encode_readdir(xdr, args, req, &hdr);
2464 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2465 args->pgbase, args->count);
2466 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2467 __func__, hdr.replen << 2, args->pages,
2468 args->pgbase, args->count);
2473 * Encode a READ request
2475 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2478 const struct nfs_pgio_args *args = data;
2479 struct compound_hdr hdr = {
2480 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2483 encode_compound_hdr(xdr, req, &hdr);
2484 encode_sequence(xdr, &args->seq_args, &hdr);
2485 encode_putfh(xdr, args->fh, &hdr);
2486 encode_read(xdr, args, &hdr);
2488 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2489 args->pages, args->pgbase, args->count);
2490 req->rq_rcv_buf.flags |= XDRBUF_READ;
2495 * Encode an SETATTR request
2497 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2500 const struct nfs_setattrargs *args = data;
2501 struct compound_hdr hdr = {
2502 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2505 encode_compound_hdr(xdr, req, &hdr);
2506 encode_sequence(xdr, &args->seq_args, &hdr);
2507 encode_putfh(xdr, args->fh, &hdr);
2508 encode_setattr(xdr, args, args->server, &hdr);
2509 encode_getfattr(xdr, args->bitmask, &hdr);
2514 * Encode a GETACL request
2516 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2519 const struct nfs_getaclargs *args = data;
2520 struct compound_hdr hdr = {
2521 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2525 encode_compound_hdr(xdr, req, &hdr);
2526 encode_sequence(xdr, &args->seq_args, &hdr);
2527 encode_putfh(xdr, args->fh, &hdr);
2528 replen = hdr.replen + op_decode_hdr_maxsz;
2529 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2531 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2532 args->acl_pages, 0, args->acl_len);
2538 * Encode a WRITE request
2540 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2543 const struct nfs_pgio_args *args = data;
2544 struct compound_hdr hdr = {
2545 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2548 encode_compound_hdr(xdr, req, &hdr);
2549 encode_sequence(xdr, &args->seq_args, &hdr);
2550 encode_putfh(xdr, args->fh, &hdr);
2551 encode_write(xdr, args, &hdr);
2552 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2554 encode_getfattr(xdr, args->bitmask, &hdr);
2561 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2564 const struct nfs_commitargs *args = data;
2565 struct compound_hdr hdr = {
2566 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2569 encode_compound_hdr(xdr, req, &hdr);
2570 encode_sequence(xdr, &args->seq_args, &hdr);
2571 encode_putfh(xdr, args->fh, &hdr);
2572 encode_commit(xdr, args, &hdr);
2579 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2582 const struct nfs4_fsinfo_arg *args = data;
2583 struct compound_hdr hdr = {
2584 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2587 encode_compound_hdr(xdr, req, &hdr);
2588 encode_sequence(xdr, &args->seq_args, &hdr);
2589 encode_putfh(xdr, args->fh, &hdr);
2590 encode_fsinfo(xdr, args->bitmask, &hdr);
2595 * a PATHCONF request
2597 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2600 const struct nfs4_pathconf_arg *args = data;
2601 struct compound_hdr hdr = {
2602 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2605 encode_compound_hdr(xdr, req, &hdr);
2606 encode_sequence(xdr, &args->seq_args, &hdr);
2607 encode_putfh(xdr, args->fh, &hdr);
2608 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2616 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2619 const struct nfs4_statfs_arg *args = data;
2620 struct compound_hdr hdr = {
2621 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2624 encode_compound_hdr(xdr, req, &hdr);
2625 encode_sequence(xdr, &args->seq_args, &hdr);
2626 encode_putfh(xdr, args->fh, &hdr);
2627 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2628 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2633 * GETATTR_BITMAP request
2635 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2636 struct xdr_stream *xdr,
2639 const struct nfs4_server_caps_arg *args = data;
2640 const u32 *bitmask = args->bitmask;
2641 struct compound_hdr hdr = {
2642 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2645 encode_compound_hdr(xdr, req, &hdr);
2646 encode_sequence(xdr, &args->seq_args, &hdr);
2647 encode_putfh(xdr, args->fhandle, &hdr);
2648 encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr);
2655 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2659 const struct nfs_client *clp = data;
2660 struct compound_hdr hdr = {
2664 encode_compound_hdr(xdr, req, &hdr);
2665 encode_renew(xdr, clp->cl_clientid, &hdr);
2670 * a SETCLIENTID request
2672 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2673 struct xdr_stream *xdr,
2676 const struct nfs4_setclientid *sc = data;
2677 struct compound_hdr hdr = {
2681 encode_compound_hdr(xdr, req, &hdr);
2682 encode_setclientid(xdr, sc, &hdr);
2687 * a SETCLIENTID_CONFIRM request
2689 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2690 struct xdr_stream *xdr,
2693 const struct nfs4_setclientid_res *arg = data;
2694 struct compound_hdr hdr = {
2698 encode_compound_hdr(xdr, req, &hdr);
2699 encode_setclientid_confirm(xdr, arg, &hdr);
2704 * DELEGRETURN request
2706 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2707 struct xdr_stream *xdr,
2710 const struct nfs4_delegreturnargs *args = data;
2711 struct compound_hdr hdr = {
2712 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2715 encode_compound_hdr(xdr, req, &hdr);
2716 encode_sequence(xdr, &args->seq_args, &hdr);
2717 encode_putfh(xdr, args->fhandle, &hdr);
2719 encode_layoutreturn(xdr, args->lr_args, &hdr);
2721 encode_getfattr(xdr, args->bitmask, &hdr);
2722 encode_delegreturn(xdr, args->stateid, &hdr);
2727 * Encode FS_LOCATIONS request
2729 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2730 struct xdr_stream *xdr,
2733 const struct nfs4_fs_locations_arg *args = data;
2734 struct compound_hdr hdr = {
2735 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2739 encode_compound_hdr(xdr, req, &hdr);
2740 encode_sequence(xdr, &args->seq_args, &hdr);
2741 if (args->migration) {
2742 encode_putfh(xdr, args->fh, &hdr);
2743 replen = hdr.replen;
2744 encode_fs_locations(xdr, args->bitmask, &hdr);
2746 encode_renew(xdr, args->clientid, &hdr);
2748 encode_putfh(xdr, args->dir_fh, &hdr);
2749 encode_lookup(xdr, args->name, &hdr);
2750 replen = hdr.replen;
2751 encode_fs_locations(xdr, args->bitmask, &hdr);
2754 /* Set up reply kvec to capture returned fs_locations array. */
2755 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2756 (struct page **)&args->page, 0, PAGE_SIZE);
2761 * Encode SECINFO request
2763 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2764 struct xdr_stream *xdr,
2767 const struct nfs4_secinfo_arg *args = data;
2768 struct compound_hdr hdr = {
2769 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2772 encode_compound_hdr(xdr, req, &hdr);
2773 encode_sequence(xdr, &args->seq_args, &hdr);
2774 encode_putfh(xdr, args->dir_fh, &hdr);
2775 encode_secinfo(xdr, args->name, &hdr);
2780 * Encode FSID_PRESENT request
2782 static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2783 struct xdr_stream *xdr,
2786 const struct nfs4_fsid_present_arg *args = data;
2787 struct compound_hdr hdr = {
2788 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2791 encode_compound_hdr(xdr, req, &hdr);
2792 encode_sequence(xdr, &args->seq_args, &hdr);
2793 encode_putfh(xdr, args->fh, &hdr);
2794 encode_getfh(xdr, &hdr);
2796 encode_renew(xdr, args->clientid, &hdr);
2800 #if defined(CONFIG_NFS_V4_1)
2802 * BIND_CONN_TO_SESSION request
2804 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2805 struct xdr_stream *xdr,
2808 const struct nfs41_bind_conn_to_session_args *args = data;
2809 struct compound_hdr hdr = {
2810 .minorversion = args->client->cl_mvops->minor_version,
2813 encode_compound_hdr(xdr, req, &hdr);
2814 encode_bind_conn_to_session(xdr, args, &hdr);
2819 * EXCHANGE_ID request
2821 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2822 struct xdr_stream *xdr,
2825 const struct nfs41_exchange_id_args *args = data;
2826 struct compound_hdr hdr = {
2827 .minorversion = args->client->cl_mvops->minor_version,
2830 encode_compound_hdr(xdr, req, &hdr);
2831 encode_exchange_id(xdr, args, &hdr);
2836 * a CREATE_SESSION request
2838 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2839 struct xdr_stream *xdr,
2842 const struct nfs41_create_session_args *args = data;
2843 struct compound_hdr hdr = {
2844 .minorversion = args->client->cl_mvops->minor_version,
2847 encode_compound_hdr(xdr, req, &hdr);
2848 encode_create_session(xdr, args, &hdr);
2853 * a DESTROY_SESSION request
2855 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2856 struct xdr_stream *xdr,
2859 const struct nfs4_session *session = data;
2860 struct compound_hdr hdr = {
2861 .minorversion = session->clp->cl_mvops->minor_version,
2864 encode_compound_hdr(xdr, req, &hdr);
2865 encode_destroy_session(xdr, session, &hdr);
2870 * a DESTROY_CLIENTID request
2872 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2873 struct xdr_stream *xdr,
2876 const struct nfs_client *clp = data;
2877 struct compound_hdr hdr = {
2878 .minorversion = clp->cl_mvops->minor_version,
2881 encode_compound_hdr(xdr, req, &hdr);
2882 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2887 * a SEQUENCE request
2889 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2892 const struct nfs4_sequence_args *args = data;
2893 struct compound_hdr hdr = {
2894 .minorversion = nfs4_xdr_minorversion(args),
2897 encode_compound_hdr(xdr, req, &hdr);
2898 encode_sequence(xdr, args, &hdr);
2903 * a GET_LEASE_TIME request
2905 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2906 struct xdr_stream *xdr,
2909 const struct nfs4_get_lease_time_args *args = data;
2910 struct compound_hdr hdr = {
2911 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2913 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2915 encode_compound_hdr(xdr, req, &hdr);
2916 encode_sequence(xdr, &args->la_seq_args, &hdr);
2917 encode_putrootfh(xdr, &hdr);
2918 encode_fsinfo(xdr, lease_bitmap, &hdr);
2923 * a RECLAIM_COMPLETE request
2925 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2926 struct xdr_stream *xdr,
2929 const struct nfs41_reclaim_complete_args *args = data;
2930 struct compound_hdr hdr = {
2931 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2934 encode_compound_hdr(xdr, req, &hdr);
2935 encode_sequence(xdr, &args->seq_args, &hdr);
2936 encode_reclaim_complete(xdr, args, &hdr);
2941 * Encode GETDEVICEINFO request
2943 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2944 struct xdr_stream *xdr,
2947 const struct nfs4_getdeviceinfo_args *args = data;
2948 struct compound_hdr hdr = {
2949 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2952 encode_compound_hdr(xdr, req, &hdr);
2953 encode_sequence(xdr, &args->seq_args, &hdr);
2954 encode_getdeviceinfo(xdr, args, &hdr);
2956 /* set up reply kvec. Subtract notification bitmap max size (2)
2957 * so that notification bitmap is put in xdr_buf tail */
2958 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2959 args->pdev->pages, args->pdev->pgbase,
2966 * Encode LAYOUTGET request
2968 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2969 struct xdr_stream *xdr,
2972 const struct nfs4_layoutget_args *args = data;
2973 struct compound_hdr hdr = {
2974 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2977 encode_compound_hdr(xdr, req, &hdr);
2978 encode_sequence(xdr, &args->seq_args, &hdr);
2979 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2980 encode_layoutget(xdr, args, &hdr);
2982 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2983 args->layout.pages, 0, args->layout.pglen);
2989 * Encode LAYOUTCOMMIT request
2991 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2992 struct xdr_stream *xdr,
2995 const struct nfs4_layoutcommit_args *args = priv;
2996 struct nfs4_layoutcommit_data *data =
2997 container_of(args, struct nfs4_layoutcommit_data, args);
2998 struct compound_hdr hdr = {
2999 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3002 encode_compound_hdr(xdr, req, &hdr);
3003 encode_sequence(xdr, &args->seq_args, &hdr);
3004 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3005 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
3006 encode_getfattr(xdr, args->bitmask, &hdr);
3011 * Encode LAYOUTRETURN request
3013 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
3014 struct xdr_stream *xdr,
3017 const struct nfs4_layoutreturn_args *args = data;
3018 struct compound_hdr hdr = {
3019 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3022 encode_compound_hdr(xdr, req, &hdr);
3023 encode_sequence(xdr, &args->seq_args, &hdr);
3024 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
3025 encode_layoutreturn(xdr, args, &hdr);
3030 * Encode SECINFO_NO_NAME request
3032 static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
3033 struct xdr_stream *xdr,
3036 const struct nfs41_secinfo_no_name_args *args = data;
3037 struct compound_hdr hdr = {
3038 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3041 encode_compound_hdr(xdr, req, &hdr);
3042 encode_sequence(xdr, &args->seq_args, &hdr);
3043 encode_putrootfh(xdr, &hdr);
3044 encode_secinfo_no_name(xdr, args, &hdr);
3049 * Encode TEST_STATEID request
3051 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
3052 struct xdr_stream *xdr,
3055 const struct nfs41_test_stateid_args *args = data;
3056 struct compound_hdr hdr = {
3057 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3060 encode_compound_hdr(xdr, req, &hdr);
3061 encode_sequence(xdr, &args->seq_args, &hdr);
3062 encode_test_stateid(xdr, args, &hdr);
3067 * Encode FREE_STATEID request
3069 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3070 struct xdr_stream *xdr,
3073 const struct nfs41_free_stateid_args *args = data;
3074 struct compound_hdr hdr = {
3075 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3078 encode_compound_hdr(xdr, req, &hdr);
3079 encode_sequence(xdr, &args->seq_args, &hdr);
3080 encode_free_stateid(xdr, args, &hdr);
3083 #endif /* CONFIG_NFS_V4_1 */
3085 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3087 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3088 "Remaining buffer length is %tu words.\n",
3089 func, xdr->end - xdr->p);
3092 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3094 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string,
3096 if (unlikely(ret < 0)) {
3097 if (ret == -EBADMSG)
3098 print_overflow_msg(__func__, xdr);
3105 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3109 p = xdr_inline_decode(xdr, 8);
3112 hdr->status = be32_to_cpup(p++);
3113 hdr->taglen = be32_to_cpup(p);
3115 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3118 hdr->tag = (char *)p;
3119 p += XDR_QUADLEN(hdr->taglen);
3120 hdr->nops = be32_to_cpup(p);
3121 if (unlikely(hdr->nops < 1))
3122 return nfs4_stat_to_errno(hdr->status);
3125 print_overflow_msg(__func__, xdr);
3129 static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3136 p = xdr_inline_decode(xdr, 8);
3139 opnum = be32_to_cpup(p++);
3140 if (unlikely(opnum != expected))
3141 goto out_bad_operation;
3142 nfserr = be32_to_cpup(p);
3143 if (nfserr == NFS_OK)
3146 *nfs_retval = nfs4_stat_to_errno(nfserr);
3149 dprintk("nfs: Server returned operation"
3150 " %d but we issued a request for %d\n",
3152 *nfs_retval = -EREMOTEIO;
3155 print_overflow_msg(__func__, xdr);
3160 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3164 __decode_op_hdr(xdr, expected, &retval);
3169 static int decode_ace(struct xdr_stream *xdr, void *ace)
3172 unsigned int strlen;
3175 p = xdr_inline_decode(xdr, 12);
3177 return decode_opaque_inline(xdr, &strlen, &str);
3178 print_overflow_msg(__func__, xdr);
3182 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3187 p = xdr_inline_decode(xdr, 4);
3190 bmlen = be32_to_cpup(p);
3192 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3193 p = xdr_inline_decode(xdr, (bmlen << 2));
3197 bitmap[0] = be32_to_cpup(p++);
3199 bitmap[1] = be32_to_cpup(p++);
3201 bitmap[2] = be32_to_cpup(p);
3206 print_overflow_msg(__func__, xdr);
3210 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3214 p = xdr_inline_decode(xdr, 4);
3217 *attrlen = be32_to_cpup(p);
3218 *savep = xdr_stream_pos(xdr);
3221 print_overflow_msg(__func__, xdr);
3225 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3227 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3229 ret = decode_attr_bitmap(xdr, bitmask);
3230 if (unlikely(ret < 0))
3232 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3234 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3235 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3236 bitmask[0], bitmask[1], bitmask[2]);
3240 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3246 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3248 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3249 p = xdr_inline_decode(xdr, 4);
3252 *type = be32_to_cpup(p);
3253 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3254 dprintk("%s: bad type %d\n", __func__, *type);
3257 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3258 ret = NFS_ATTR_FATTR_TYPE;
3260 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3263 print_overflow_msg(__func__, xdr);
3267 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3268 uint32_t *bitmap, uint32_t *type)
3273 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3275 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3276 p = xdr_inline_decode(xdr, 4);
3279 *type = be32_to_cpup(p);
3280 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3282 dprintk("%s: expire type=0x%x\n", __func__, *type);
3285 print_overflow_msg(__func__, xdr);
3289 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3295 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3297 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3298 p = xdr_inline_decode(xdr, 8);
3301 xdr_decode_hyper(p, change);
3302 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3303 ret = NFS_ATTR_FATTR_CHANGE;
3305 dprintk("%s: change attribute=%Lu\n", __func__,
3306 (unsigned long long)*change);
3309 print_overflow_msg(__func__, xdr);
3313 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3319 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3321 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3322 p = xdr_inline_decode(xdr, 8);
3325 xdr_decode_hyper(p, size);
3326 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3327 ret = NFS_ATTR_FATTR_SIZE;
3329 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3332 print_overflow_msg(__func__, xdr);
3336 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3341 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3343 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3344 p = xdr_inline_decode(xdr, 4);
3347 *res = be32_to_cpup(p);
3348 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3350 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3353 print_overflow_msg(__func__, xdr);
3357 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3362 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3364 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3365 p = xdr_inline_decode(xdr, 4);
3368 *res = be32_to_cpup(p);
3369 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3371 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3374 print_overflow_msg(__func__, xdr);
3378 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3385 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3387 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3388 p = xdr_inline_decode(xdr, 16);
3391 p = xdr_decode_hyper(p, &fsid->major);
3392 xdr_decode_hyper(p, &fsid->minor);
3393 bitmap[0] &= ~FATTR4_WORD0_FSID;
3394 ret = NFS_ATTR_FATTR_FSID;
3396 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3397 (unsigned long long)fsid->major,
3398 (unsigned long long)fsid->minor);
3401 print_overflow_msg(__func__, xdr);
3405 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3410 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3412 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3413 p = xdr_inline_decode(xdr, 4);
3416 *res = be32_to_cpup(p);
3417 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3419 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3422 print_overflow_msg(__func__, xdr);
3426 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3430 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3432 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3433 p = xdr_inline_decode(xdr, 4);
3436 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3437 *res = -be32_to_cpup(p);
3441 print_overflow_msg(__func__, xdr);
3445 static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3446 uint32_t *bitmap, uint32_t *bitmask)
3448 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3450 ret = decode_attr_bitmap(xdr, bitmask);
3451 if (unlikely(ret < 0))
3453 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3455 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3456 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3457 bitmask[0], bitmask[1], bitmask[2]);
3461 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3467 memset(fh, 0, sizeof(*fh));
3469 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3471 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3472 p = xdr_inline_decode(xdr, 4);
3475 len = be32_to_cpup(p);
3476 if (len > NFS4_FHSIZE)
3478 p = xdr_inline_decode(xdr, len);
3482 memcpy(fh->data, p, len);
3485 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3489 print_overflow_msg(__func__, xdr);
3493 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3498 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3500 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3501 p = xdr_inline_decode(xdr, 4);
3504 *res = be32_to_cpup(p);
3505 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3507 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3510 print_overflow_msg(__func__, xdr);
3514 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3520 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3522 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3523 p = xdr_inline_decode(xdr, 8);
3526 xdr_decode_hyper(p, fileid);
3527 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3528 ret = NFS_ATTR_FATTR_FILEID;
3530 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3533 print_overflow_msg(__func__, xdr);
3537 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3543 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3545 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3546 p = xdr_inline_decode(xdr, 8);
3549 xdr_decode_hyper(p, fileid);
3550 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3551 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3553 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3556 print_overflow_msg(__func__, xdr);
3560 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3566 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3568 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3569 p = xdr_inline_decode(xdr, 8);
3572 xdr_decode_hyper(p, res);
3573 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3575 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3578 print_overflow_msg(__func__, xdr);
3582 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3588 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3590 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3591 p = xdr_inline_decode(xdr, 8);
3594 xdr_decode_hyper(p, res);
3595 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3597 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3600 print_overflow_msg(__func__, xdr);
3604 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3610 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3612 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3613 p = xdr_inline_decode(xdr, 8);
3616 xdr_decode_hyper(p, res);
3617 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3619 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3622 print_overflow_msg(__func__, xdr);
3626 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3632 p = xdr_inline_decode(xdr, 4);
3635 n = be32_to_cpup(p);
3638 dprintk("pathname4: ");
3639 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3640 dprintk("cannot parse %d components in path\n", n);
3643 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3644 struct nfs4_string *component = &path->components[path->ncomponents];
3645 status = decode_opaque_inline(xdr, &component->len, &component->data);
3646 if (unlikely(status != 0))
3650 (path->ncomponents != n ? "/ " : ""),
3651 component->len, component->data);
3656 /* a root pathname is sent as a zero component4 */
3657 path->ncomponents = 1;
3658 path->components[0].len=0;
3659 path->components[0].data=NULL;
3660 dprintk("pathname4: /\n");
3663 dprintk(" status %d", status);
3667 print_overflow_msg(__func__, xdr);
3671 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3677 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3680 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3682 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
3684 /* Ignore borken servers that return unrequested attrs */
3685 if (unlikely(res == NULL))
3687 dprintk("%s: fsroot:\n", __func__);
3688 status = decode_pathname(xdr, &res->fs_path);
3689 if (unlikely(status != 0))
3691 p = xdr_inline_decode(xdr, 4);
3694 n = be32_to_cpup(p);
3697 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3699 struct nfs4_fs_location *loc;
3701 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3703 loc = &res->locations[res->nlocations];
3704 p = xdr_inline_decode(xdr, 4);
3707 m = be32_to_cpup(p);
3709 dprintk("%s: servers:\n", __func__);
3710 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3711 struct nfs4_string *server;
3713 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3715 dprintk("%s: using first %u of %u servers "
3716 "returned for location %u\n",
3718 NFS4_FS_LOCATION_MAXSERVERS,
3719 m, res->nlocations);
3720 for (i = loc->nservers; i < m; i++) {
3723 status = decode_opaque_inline(xdr, &len, &data);
3724 if (unlikely(status != 0))
3729 server = &loc->servers[loc->nservers];
3730 status = decode_opaque_inline(xdr, &server->len, &server->data);
3731 if (unlikely(status != 0))
3733 dprintk("%s ", server->data);
3735 status = decode_pathname(xdr, &loc->rootpath);
3736 if (unlikely(status != 0))
3739 if (res->nlocations != 0)
3740 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3742 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3745 print_overflow_msg(__func__, xdr);
3751 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3757 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3759 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3760 p = xdr_inline_decode(xdr, 8);
3763 xdr_decode_hyper(p, res);
3764 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3766 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3769 print_overflow_msg(__func__, xdr);
3773 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3779 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3781 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3782 p = xdr_inline_decode(xdr, 4);
3785 *maxlink = be32_to_cpup(p);
3786 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3788 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3791 print_overflow_msg(__func__, xdr);
3795 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3801 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3803 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3804 p = xdr_inline_decode(xdr, 4);
3807 *maxname = be32_to_cpup(p);
3808 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3810 dprintk("%s: maxname=%u\n", __func__, *maxname);
3813 print_overflow_msg(__func__, xdr);
3817 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3823 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3825 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3827 p = xdr_inline_decode(xdr, 8);
3830 xdr_decode_hyper(p, &maxread);
3831 if (maxread > 0x7FFFFFFF)
3832 maxread = 0x7FFFFFFF;
3833 *res = (uint32_t)maxread;
3834 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3836 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3839 print_overflow_msg(__func__, xdr);
3843 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3849 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3851 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3853 p = xdr_inline_decode(xdr, 8);
3856 xdr_decode_hyper(p, &maxwrite);
3857 if (maxwrite > 0x7FFFFFFF)
3858 maxwrite = 0x7FFFFFFF;
3859 *res = (uint32_t)maxwrite;
3860 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3862 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3865 print_overflow_msg(__func__, xdr);
3869 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3876 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3878 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3879 p = xdr_inline_decode(xdr, 4);
3882 tmp = be32_to_cpup(p);
3883 *mode = tmp & ~S_IFMT;
3884 bitmap[1] &= ~FATTR4_WORD1_MODE;
3885 ret = NFS_ATTR_FATTR_MODE;
3887 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3890 print_overflow_msg(__func__, xdr);
3894 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3900 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3902 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3903 p = xdr_inline_decode(xdr, 4);
3906 *nlink = be32_to_cpup(p);
3907 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3908 ret = NFS_ATTR_FATTR_NLINK;
3910 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3913 print_overflow_msg(__func__, xdr);
3917 static ssize_t decode_nfs4_string(struct xdr_stream *xdr,
3918 struct nfs4_string *name, gfp_t gfp_flags)
3922 ret = xdr_stream_decode_string_dup(xdr, &name->data,
3923 XDR_MAX_NETOBJ, gfp_flags);
3930 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3931 const struct nfs_server *server, kuid_t *uid,
3932 struct nfs4_string *owner_name)
3937 *uid = make_kuid(&init_user_ns, -2);
3938 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3940 if (!(bitmap[1] & FATTR4_WORD1_OWNER))
3942 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3944 if (owner_name != NULL) {
3945 len = decode_nfs4_string(xdr, owner_name, GFP_NOWAIT);
3948 dprintk("%s: name=%s\n", __func__, owner_name->data);
3949 return NFS_ATTR_FATTR_OWNER_NAME;
3951 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3953 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0)
3955 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3956 return NFS_ATTR_FATTR_OWNER;
3959 if (len != -EBADMSG)
3961 print_overflow_msg(__func__, xdr);
3965 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3966 const struct nfs_server *server, kgid_t *gid,
3967 struct nfs4_string *group_name)
3972 *gid = make_kgid(&init_user_ns, -2);
3973 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3975 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP))
3977 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3979 if (group_name != NULL) {
3980 len = decode_nfs4_string(xdr, group_name, GFP_NOWAIT);
3983 dprintk("%s: name=%s\n", __func__, group_name->data);
3984 return NFS_ATTR_FATTR_GROUP_NAME;
3986 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
3988 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0)
3990 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3991 return NFS_ATTR_FATTR_GROUP;
3994 if (len != -EBADMSG)
3996 print_overflow_msg(__func__, xdr);
4000 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
4002 uint32_t major = 0, minor = 0;
4007 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
4009 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
4012 p = xdr_inline_decode(xdr, 8);
4015 major = be32_to_cpup(p++);
4016 minor = be32_to_cpup(p);
4017 tmp = MKDEV(major, minor);
4018 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
4020 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
4021 ret = NFS_ATTR_FATTR_RDEV;
4023 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
4026 print_overflow_msg(__func__, xdr);
4030 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4036 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
4038 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
4039 p = xdr_inline_decode(xdr, 8);
4042 xdr_decode_hyper(p, res);
4043 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
4045 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
4048 print_overflow_msg(__func__, xdr);
4052 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4058 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4060 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
4061 p = xdr_inline_decode(xdr, 8);
4064 xdr_decode_hyper(p, res);
4065 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4067 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
4070 print_overflow_msg(__func__, xdr);
4074 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4080 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4082 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
4083 p = xdr_inline_decode(xdr, 8);
4086 xdr_decode_hyper(p, res);
4087 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4089 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
4092 print_overflow_msg(__func__, xdr);
4096 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4102 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4104 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
4105 p = xdr_inline_decode(xdr, 8);
4108 xdr_decode_hyper(p, used);
4109 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4110 ret = NFS_ATTR_FATTR_SPACE_USED;
4112 dprintk("%s: space used=%Lu\n", __func__,
4113 (unsigned long long)*used);
4116 print_overflow_msg(__func__, xdr);
4120 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4126 p = xdr_inline_decode(xdr, 12);
4129 p = xdr_decode_hyper(p, &sec);
4130 nsec = be32_to_cpup(p);
4131 time->tv_sec = (time_t)sec;
4132 time->tv_nsec = (long)nsec;
4135 print_overflow_msg(__func__, xdr);
4139 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4145 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4147 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4148 status = decode_attr_time(xdr, time);
4150 status = NFS_ATTR_FATTR_ATIME;
4151 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4153 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4157 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4163 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4165 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4166 status = decode_attr_time(xdr, time);
4168 status = NFS_ATTR_FATTR_CTIME;
4169 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4171 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4175 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4176 struct timespec *time)
4182 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4184 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4185 status = decode_attr_time(xdr, time);
4186 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4188 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4189 (long)time->tv_nsec);
4193 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4194 struct nfs4_label *label)
4202 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4204 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4205 p = xdr_inline_decode(xdr, 4);
4208 lfs = be32_to_cpup(p++);
4209 p = xdr_inline_decode(xdr, 4);
4212 pi = be32_to_cpup(p++);
4213 p = xdr_inline_decode(xdr, 4);
4216 len = be32_to_cpup(p++);
4217 p = xdr_inline_decode(xdr, len);
4220 if (len < NFS4_MAXLABELLEN) {
4222 memcpy(label->label, p, len);
4226 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4228 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4230 printk(KERN_WARNING "%s: label too long (%u)!\n",
4233 if (label && label->label)
4234 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4235 (char *)label->label, label->len, label->pi, label->lfs);
4239 print_overflow_msg(__func__, xdr);
4243 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4249 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4251 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4252 status = decode_attr_time(xdr, time);
4254 status = NFS_ATTR_FATTR_MTIME;
4255 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4257 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4261 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4263 unsigned int attrwords = XDR_QUADLEN(attrlen);
4264 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4266 if (unlikely(attrwords != nwords)) {
4267 dprintk("%s: server returned incorrect attribute length: "
4271 (attrwords < nwords) ? '<' : '>',
4278 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4282 p = xdr_inline_decode(xdr, 20);
4285 cinfo->atomic = be32_to_cpup(p++);
4286 p = xdr_decode_hyper(p, &cinfo->before);
4287 xdr_decode_hyper(p, &cinfo->after);
4290 print_overflow_msg(__func__, xdr);
4294 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4300 status = decode_op_hdr(xdr, OP_ACCESS);
4303 p = xdr_inline_decode(xdr, 8);
4306 supp = be32_to_cpup(p++);
4307 acc = be32_to_cpup(p);
4312 print_overflow_msg(__func__, xdr);
4316 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4318 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len);
4319 if (unlikely(ret < 0)) {
4320 print_overflow_msg(__func__, xdr);
4326 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4328 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4331 static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4333 stateid->type = NFS4_OPEN_STATEID_TYPE;
4334 return decode_stateid(xdr, stateid);
4337 static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4339 stateid->type = NFS4_LOCK_STATEID_TYPE;
4340 return decode_stateid(xdr, stateid);
4343 static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4345 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4346 return decode_stateid(xdr, stateid);
4349 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4353 status = decode_op_hdr(xdr, OP_CLOSE);
4355 nfs_increment_open_seqid(status, res->seqid);
4357 status = decode_open_stateid(xdr, &res->stateid);
4361 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4363 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4366 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4368 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4371 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4375 status = decode_op_hdr(xdr, OP_COMMIT);
4377 status = decode_write_verifier(xdr, &res->verf->verifier);
4381 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4387 status = decode_op_hdr(xdr, OP_CREATE);
4390 if ((status = decode_change_info(xdr, cinfo)))
4392 p = xdr_inline_decode(xdr, 4);
4395 bmlen = be32_to_cpup(p);
4396 p = xdr_inline_decode(xdr, bmlen << 2);
4400 print_overflow_msg(__func__, xdr);
4404 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4407 uint32_t attrlen, bitmap[3] = {0};
4410 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4412 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4414 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4416 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4418 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4419 &res->fh_expire_type)) != 0)
4421 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4423 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4425 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4427 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4428 res->exclcreat_bitmask)) != 0)
4430 status = verify_attr_len(xdr, savep, attrlen);
4432 dprintk("%s: xdr returned %d!\n", __func__, -status);
4436 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4439 uint32_t attrlen, bitmap[3] = {0};
4442 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4444 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4446 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4449 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4451 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4453 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4457 if (unlikely(bitmap[0]))
4460 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4462 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4464 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4467 status = verify_attr_len(xdr, savep, attrlen);
4469 dprintk("%s: xdr returned %d!\n", __func__, -status);
4473 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4476 uint32_t attrlen, bitmap[3] = {0};
4479 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4481 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4483 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4486 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4488 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4491 status = verify_attr_len(xdr, savep, attrlen);
4493 dprintk("%s: xdr returned %d!\n", __func__, -status);
4497 static int decode_threshold_hint(struct xdr_stream *xdr,
4505 if (likely(bitmap[0] & hint_bit)) {
4506 p = xdr_inline_decode(xdr, 8);
4509 xdr_decode_hyper(p, res);
4513 print_overflow_msg(__func__, xdr);
4517 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4518 struct nfs4_threshold *res)
4522 uint32_t bitmap[3] = {0,}, attrlen;
4526 p = xdr_inline_decode(xdr, 4);
4528 print_overflow_msg(__func__, xdr);
4531 res->l_type = be32_to_cpup(p);
4533 /* thi_hintset bitmap */
4534 status = decode_attr_bitmap(xdr, bitmap);
4538 /* thi_hintlist length */
4539 status = decode_attr_length(xdr, &attrlen, &savep);
4543 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4546 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4549 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4553 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4558 status = verify_attr_len(xdr, savep, attrlen);
4559 res->bm = bitmap[0];
4561 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4562 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4565 dprintk("%s ret=%d!\n", __func__, status);
4570 * Thresholds on pNFS direct I/O vrs MDS I/O
4572 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4574 struct nfs4_threshold *res)
4580 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4582 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4583 /* Did the server return an unrequested attribute? */
4584 if (unlikely(res == NULL))
4586 p = xdr_inline_decode(xdr, 4);
4589 num = be32_to_cpup(p);
4593 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4594 "drivers per filesystem not supported\n",
4597 status = decode_first_threshold_item4(xdr, res);
4598 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4602 print_overflow_msg(__func__, xdr);
4606 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4607 struct nfs_fattr *fattr, struct nfs_fh *fh,
4608 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4609 const struct nfs_server *server)
4616 status = decode_attr_type(xdr, bitmap, &type);
4621 fattr->mode |= nfs_type2fmt[type];
4622 fattr->valid |= status;
4625 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4628 fattr->valid |= status;
4630 status = decode_attr_size(xdr, bitmap, &fattr->size);
4633 fattr->valid |= status;
4635 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4638 fattr->valid |= status;
4641 status = decode_attr_error(xdr, bitmap, &err);
4645 status = decode_attr_filehandle(xdr, bitmap, fh);
4649 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4652 fattr->valid |= status;
4654 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4657 fattr->valid |= status;
4660 if (unlikely(bitmap[0]))
4663 status = decode_attr_mode(xdr, bitmap, &fmode);
4667 fattr->mode |= fmode;
4668 fattr->valid |= status;
4671 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4674 fattr->valid |= status;
4676 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4679 fattr->valid |= status;
4681 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4684 fattr->valid |= status;
4686 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4689 fattr->valid |= status;
4691 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4694 fattr->valid |= status;
4696 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4699 fattr->valid |= status;
4701 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4704 fattr->valid |= status;
4706 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4709 fattr->valid |= status;
4711 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4714 fattr->valid |= status;
4717 if (unlikely(bitmap[1]))
4720 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4725 status = decode_attr_security_label(xdr, bitmap, label);
4728 fattr->valid |= status;
4732 dprintk("%s: xdr returned %d\n", __func__, -status);
4736 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4737 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4738 struct nfs4_label *label, const struct nfs_server *server)
4745 status = decode_op_hdr(xdr, OP_GETATTR);
4749 status = decode_attr_bitmap(xdr, bitmap);
4753 status = decode_attr_length(xdr, &attrlen, &savep);
4757 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4762 status = verify_attr_len(xdr, savep, attrlen);
4764 dprintk("%s: xdr returned %d\n", __func__, -status);
4768 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4769 struct nfs4_label *label, const struct nfs_server *server)
4771 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4774 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4775 const struct nfs_server *server)
4777 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4781 * Decode potentially multiple layout types.
4783 static int decode_pnfs_layout_types(struct xdr_stream *xdr,
4784 struct nfs_fsinfo *fsinfo)
4789 p = xdr_inline_decode(xdr, 4);
4792 fsinfo->nlayouttypes = be32_to_cpup(p);
4794 /* pNFS is not supported by the underlying file system */
4795 if (fsinfo->nlayouttypes == 0)
4798 /* Decode and set first layout type, move xdr->p past unused types */
4799 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
4803 /* If we get too many, then just cap it at the max */
4804 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4805 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4806 __func__, fsinfo->nlayouttypes);
4807 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4810 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4811 fsinfo->layouttype[i] = be32_to_cpup(p++);
4814 print_overflow_msg(__func__, xdr);
4819 * The type of file system exported.
4820 * Note we must ensure that layouttype is set in any non-error case.
4822 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4823 struct nfs_fsinfo *fsinfo)
4827 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4828 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4830 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4831 status = decode_pnfs_layout_types(xdr, fsinfo);
4832 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4838 * The prefered block size for layout directed io
4840 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4845 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4847 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4848 p = xdr_inline_decode(xdr, 4);
4850 print_overflow_msg(__func__, xdr);
4853 *res = be32_to_cpup(p);
4854 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4860 * The granularity of a CLONE operation.
4862 static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4867 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4869 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4870 p = xdr_inline_decode(xdr, 4);
4872 print_overflow_msg(__func__, xdr);
4875 *res = be32_to_cpup(p);
4876 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4881 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4884 uint32_t attrlen, bitmap[3];
4887 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4889 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4891 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4894 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4896 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4898 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4900 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4902 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4903 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4905 fsinfo->wtpref = fsinfo->wtmax;
4908 if (unlikely(bitmap[0]))
4911 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4914 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
4919 if (unlikely(bitmap[1]))
4922 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4925 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4929 status = verify_attr_len(xdr, savep, attrlen);
4931 dprintk("%s: xdr returned %d!\n", __func__, -status);
4935 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4941 /* Zero handle first to allow comparisons */
4942 memset(fh, 0, sizeof(*fh));
4944 status = decode_op_hdr(xdr, OP_GETFH);
4948 p = xdr_inline_decode(xdr, 4);
4951 len = be32_to_cpup(p);
4952 if (len > NFS4_FHSIZE)
4955 p = xdr_inline_decode(xdr, len);
4958 memcpy(fh->data, p, len);
4961 print_overflow_msg(__func__, xdr);
4965 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4969 status = decode_op_hdr(xdr, OP_LINK);
4972 return decode_change_info(xdr, cinfo);
4976 * We create the owner, so we know a proper owner.id length is 4.
4978 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4980 uint64_t offset, length, clientid;
4982 uint32_t namelen, type;
4984 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4987 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4988 p = xdr_decode_hyper(p, &length);
4989 type = be32_to_cpup(p++); /* 4 byte read */
4990 if (fl != NULL) { /* manipulate file lock */
4991 fl->fl_start = (loff_t)offset;
4992 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4993 if (length == ~(uint64_t)0)
4994 fl->fl_end = OFFSET_MAX;
4995 fl->fl_type = F_WRLCK;
4997 fl->fl_type = F_RDLCK;
5000 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
5001 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
5002 p = xdr_inline_decode(xdr, namelen); /* variable size field */
5004 return -NFS4ERR_DENIED;
5006 print_overflow_msg(__func__, xdr);
5010 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
5014 status = decode_op_hdr(xdr, OP_LOCK);
5018 status = decode_lock_stateid(xdr, &res->stateid);
5019 if (unlikely(status))
5021 } else if (status == -NFS4ERR_DENIED)
5022 status = decode_lock_denied(xdr, NULL);
5023 if (res->open_seqid != NULL)
5024 nfs_increment_open_seqid(status, res->open_seqid);
5025 nfs_increment_lock_seqid(status, res->lock_seqid);
5030 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
5033 status = decode_op_hdr(xdr, OP_LOCKT);
5034 if (status == -NFS4ERR_DENIED)
5035 return decode_lock_denied(xdr, res->denied);
5039 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
5043 status = decode_op_hdr(xdr, OP_LOCKU);
5045 nfs_increment_lock_seqid(status, res->seqid);
5047 status = decode_lock_stateid(xdr, &res->stateid);
5051 static int decode_release_lockowner(struct xdr_stream *xdr)
5053 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5056 static int decode_lookup(struct xdr_stream *xdr)
5058 return decode_op_hdr(xdr, OP_LOOKUP);
5061 /* This is too sick! */
5062 static int decode_space_limit(struct xdr_stream *xdr,
5063 unsigned long *pagemod_limit)
5066 uint32_t limit_type, nblocks, blocksize;
5069 p = xdr_inline_decode(xdr, 12);
5072 limit_type = be32_to_cpup(p++);
5073 switch (limit_type) {
5074 case NFS4_LIMIT_SIZE:
5075 xdr_decode_hyper(p, &maxsize);
5077 case NFS4_LIMIT_BLOCKS:
5078 nblocks = be32_to_cpup(p++);
5079 blocksize = be32_to_cpup(p);
5080 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
5082 maxsize >>= PAGE_SHIFT;
5083 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
5086 print_overflow_msg(__func__, xdr);
5090 static int decode_rw_delegation(struct xdr_stream *xdr,
5091 uint32_t delegation_type,
5092 struct nfs_openres *res)
5097 status = decode_delegation_stateid(xdr, &res->delegation);
5098 if (unlikely(status))
5100 p = xdr_inline_decode(xdr, 4);
5103 res->do_recall = be32_to_cpup(p);
5105 switch (delegation_type) {
5106 case NFS4_OPEN_DELEGATE_READ:
5107 res->delegation_type = FMODE_READ;
5109 case NFS4_OPEN_DELEGATE_WRITE:
5110 res->delegation_type = FMODE_WRITE|FMODE_READ;
5111 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
5114 return decode_ace(xdr, NULL);
5116 print_overflow_msg(__func__, xdr);
5120 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5123 uint32_t why_no_delegation;
5125 p = xdr_inline_decode(xdr, 4);
5128 why_no_delegation = be32_to_cpup(p);
5129 switch (why_no_delegation) {
5130 case WND4_CONTENTION:
5132 xdr_inline_decode(xdr, 4);
5133 /* Ignore for now */
5137 print_overflow_msg(__func__, xdr);
5141 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5144 uint32_t delegation_type;
5146 p = xdr_inline_decode(xdr, 4);
5149 delegation_type = be32_to_cpup(p);
5150 res->delegation_type = 0;
5151 switch (delegation_type) {
5152 case NFS4_OPEN_DELEGATE_NONE:
5154 case NFS4_OPEN_DELEGATE_READ:
5155 case NFS4_OPEN_DELEGATE_WRITE:
5156 return decode_rw_delegation(xdr, delegation_type, res);
5157 case NFS4_OPEN_DELEGATE_NONE_EXT:
5158 return decode_no_delegation(xdr, res);
5162 print_overflow_msg(__func__, xdr);
5166 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5169 uint32_t savewords, bmlen, i;
5172 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5174 nfs_increment_open_seqid(status, res->seqid);
5177 status = decode_open_stateid(xdr, &res->stateid);
5178 if (unlikely(status))
5181 decode_change_info(xdr, &res->cinfo);
5183 p = xdr_inline_decode(xdr, 8);
5186 res->rflags = be32_to_cpup(p++);
5187 bmlen = be32_to_cpup(p);
5191 p = xdr_inline_decode(xdr, bmlen << 2);
5194 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5195 for (i = 0; i < savewords; ++i)
5196 res->attrset[i] = be32_to_cpup(p++);
5197 for (; i < NFS4_BITMAP_SIZE; i++)
5198 res->attrset[i] = 0;
5200 return decode_delegation(xdr, res);
5202 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
5205 print_overflow_msg(__func__, xdr);
5209 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5213 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5215 nfs_increment_open_seqid(status, res->seqid);
5217 status = decode_open_stateid(xdr, &res->stateid);
5221 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5225 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5227 nfs_increment_open_seqid(status, res->seqid);
5229 status = decode_open_stateid(xdr, &res->stateid);
5233 static int decode_putfh(struct xdr_stream *xdr)
5235 return decode_op_hdr(xdr, OP_PUTFH);
5238 static int decode_putrootfh(struct xdr_stream *xdr)
5240 return decode_op_hdr(xdr, OP_PUTROOTFH);
5243 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5244 struct nfs_pgio_res *res)
5247 uint32_t count, eof, recvd;
5250 status = decode_op_hdr(xdr, OP_READ);
5253 p = xdr_inline_decode(xdr, 8);
5256 eof = be32_to_cpup(p++);
5257 count = be32_to_cpup(p);
5258 recvd = xdr_read_pages(xdr, count);
5259 if (count > recvd) {
5260 dprintk("NFS: server cheating in read reply: "
5261 "count %u > recvd %u\n", count, recvd);
5269 print_overflow_msg(__func__, xdr);
5273 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5278 status = decode_op_hdr(xdr, OP_READDIR);
5280 status = decode_verifier(xdr, readdir->verifier.data);
5281 if (unlikely(status))
5283 memcpy(verf, readdir->verifier.data, sizeof(verf));
5284 dprintk("%s: verifier = %08x:%08x\n",
5285 __func__, verf[0], verf[1]);
5286 return xdr_read_pages(xdr, xdr->buf->page_len);
5289 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5291 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5296 status = decode_op_hdr(xdr, OP_READLINK);
5300 /* Convert length of symlink */
5301 p = xdr_inline_decode(xdr, 4);
5304 len = be32_to_cpup(p);
5305 if (len >= rcvbuf->page_len || len <= 0) {
5306 dprintk("nfs: server returned giant symlink!\n");
5307 return -ENAMETOOLONG;
5309 recvd = xdr_read_pages(xdr, len);
5311 dprintk("NFS: server cheating in readlink reply: "
5312 "count %u > recvd %u\n", len, recvd);
5316 * The XDR encode routine has set things up so that
5317 * the link text will be copied directly into the
5318 * buffer. We just have to do overflow-checking,
5319 * and and null-terminate the text (the VFS expects
5320 * null-termination).
5322 xdr_terminate_string(rcvbuf, len);
5325 print_overflow_msg(__func__, xdr);
5329 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5333 status = decode_op_hdr(xdr, OP_REMOVE);
5336 status = decode_change_info(xdr, cinfo);
5341 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5342 struct nfs4_change_info *new_cinfo)
5346 status = decode_op_hdr(xdr, OP_RENAME);
5349 if ((status = decode_change_info(xdr, old_cinfo)))
5351 status = decode_change_info(xdr, new_cinfo);
5356 static int decode_renew(struct xdr_stream *xdr)
5358 return decode_op_hdr(xdr, OP_RENEW);
5362 decode_restorefh(struct xdr_stream *xdr)
5364 return decode_op_hdr(xdr, OP_RESTOREFH);
5367 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5368 struct nfs_getaclres *res)
5374 unsigned int pg_offset;
5377 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5380 xdr_enter_page(xdr, xdr->buf->page_len);
5382 /* Calculate the offset of the page data */
5383 pg_offset = xdr->buf->head[0].iov_len;
5385 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5387 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5390 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5392 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5394 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5395 * are stored with the acl data to handle the problem of
5396 * variable length bitmaps.*/
5397 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5398 res->acl_len = attrlen;
5400 /* Check for receive buffer overflow */
5401 if (res->acl_len > (xdr->nwords << 2) ||
5402 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5403 res->acl_flags |= NFS4_ACL_TRUNC;
5404 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5405 attrlen, xdr->nwords << 2);
5408 status = -EOPNOTSUPP;
5415 decode_savefh(struct xdr_stream *xdr)
5417 return decode_op_hdr(xdr, OP_SAVEFH);
5420 static int decode_setattr(struct xdr_stream *xdr)
5426 status = decode_op_hdr(xdr, OP_SETATTR);
5429 p = xdr_inline_decode(xdr, 4);
5432 bmlen = be32_to_cpup(p);
5433 p = xdr_inline_decode(xdr, bmlen << 2);
5437 print_overflow_msg(__func__, xdr);
5441 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5447 p = xdr_inline_decode(xdr, 8);
5450 opnum = be32_to_cpup(p++);
5451 if (opnum != OP_SETCLIENTID) {
5452 dprintk("nfs: decode_setclientid: Server returned operation"
5456 nfserr = be32_to_cpup(p);
5457 if (nfserr == NFS_OK) {
5458 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5461 p = xdr_decode_hyper(p, &res->clientid);
5462 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5463 } else if (nfserr == NFSERR_CLID_INUSE) {
5466 /* skip netid string */
5467 p = xdr_inline_decode(xdr, 4);
5470 len = be32_to_cpup(p);
5471 p = xdr_inline_decode(xdr, len);
5475 /* skip uaddr string */
5476 p = xdr_inline_decode(xdr, 4);
5479 len = be32_to_cpup(p);
5480 p = xdr_inline_decode(xdr, len);
5483 return -NFSERR_CLID_INUSE;
5485 return nfs4_stat_to_errno(nfserr);
5489 print_overflow_msg(__func__, xdr);
5493 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5495 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5498 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
5503 status = decode_op_hdr(xdr, OP_WRITE);
5507 p = xdr_inline_decode(xdr, 8);
5510 res->count = be32_to_cpup(p++);
5511 res->verf->committed = be32_to_cpup(p++);
5512 return decode_write_verifier(xdr, &res->verf->verifier);
5514 print_overflow_msg(__func__, xdr);
5518 static int decode_delegreturn(struct xdr_stream *xdr)
5520 return decode_op_hdr(xdr, OP_DELEGRETURN);
5523 static int decode_secinfo_gss(struct xdr_stream *xdr,
5524 struct nfs4_secinfo4 *flavor)
5529 p = xdr_inline_decode(xdr, 4);
5532 oid_len = be32_to_cpup(p);
5533 if (oid_len > GSS_OID_MAX_LEN)
5536 p = xdr_inline_decode(xdr, oid_len);
5539 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5540 flavor->flavor_info.oid.len = oid_len;
5542 p = xdr_inline_decode(xdr, 8);
5545 flavor->flavor_info.qop = be32_to_cpup(p++);
5546 flavor->flavor_info.service = be32_to_cpup(p);
5551 print_overflow_msg(__func__, xdr);
5557 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5559 struct nfs4_secinfo4 *sec_flavor;
5560 unsigned int i, num_flavors;
5564 p = xdr_inline_decode(xdr, 4);
5568 res->flavors->num_flavors = 0;
5569 num_flavors = be32_to_cpup(p);
5571 for (i = 0; i < num_flavors; i++) {
5572 sec_flavor = &res->flavors->flavors[i];
5573 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5576 p = xdr_inline_decode(xdr, 4);
5579 sec_flavor->flavor = be32_to_cpup(p);
5581 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5582 status = decode_secinfo_gss(xdr, sec_flavor);
5586 res->flavors->num_flavors++;
5593 print_overflow_msg(__func__, xdr);
5597 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5599 int status = decode_op_hdr(xdr, OP_SECINFO);
5602 return decode_secinfo_common(xdr, res);
5605 #if defined(CONFIG_NFS_V4_1)
5606 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5608 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5611 return decode_secinfo_common(xdr, res);
5614 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5617 uint32_t bitmap_words;
5620 p = xdr_inline_decode(xdr, 4);
5623 bitmap_words = be32_to_cpup(p++);
5624 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5626 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5627 for (i = 0; i < bitmap_words; i++)
5628 op_map->u.words[i] = be32_to_cpup(p++);
5633 static int decode_exchange_id(struct xdr_stream *xdr,
5634 struct nfs41_exchange_id_res *res)
5640 uint32_t impl_id_count;
5642 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5646 p = xdr_inline_decode(xdr, 8);
5649 xdr_decode_hyper(p, &res->clientid);
5650 p = xdr_inline_decode(xdr, 12);
5653 res->seqid = be32_to_cpup(p++);
5654 res->flags = be32_to_cpup(p++);
5656 res->state_protect.how = be32_to_cpup(p);
5657 switch (res->state_protect.how) {
5661 status = decode_op_map(xdr, &res->state_protect.enforce);
5664 status = decode_op_map(xdr, &res->state_protect.allow);
5673 /* server_owner4.so_minor_id */
5674 p = xdr_inline_decode(xdr, 8);
5677 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5679 /* server_owner4.so_major_id */
5680 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5681 if (unlikely(status))
5683 memcpy(res->server_owner->major_id, dummy_str, dummy);
5684 res->server_owner->major_id_sz = dummy;
5687 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5688 if (unlikely(status))
5690 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5691 res->server_scope->server_scope_sz = dummy;
5693 /* Implementation Id */
5694 p = xdr_inline_decode(xdr, 4);
5697 impl_id_count = be32_to_cpup(p++);
5699 if (impl_id_count) {
5701 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5702 if (unlikely(status))
5704 memcpy(res->impl_id->domain, dummy_str, dummy);
5707 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5708 if (unlikely(status))
5710 memcpy(res->impl_id->name, dummy_str, dummy);
5713 p = xdr_inline_decode(xdr, 12);
5716 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5717 res->impl_id->date.nseconds = be32_to_cpup(p);
5719 /* if there's more than one entry, ignore the rest */
5723 print_overflow_msg(__func__, xdr);
5727 static int decode_chan_attrs(struct xdr_stream *xdr,
5728 struct nfs4_channel_attrs *attrs)
5733 p = xdr_inline_decode(xdr, 28);
5736 val = be32_to_cpup(p++); /* headerpadsz */
5738 return -EINVAL; /* no support for header padding yet */
5739 attrs->max_rqst_sz = be32_to_cpup(p++);
5740 attrs->max_resp_sz = be32_to_cpup(p++);
5741 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5742 attrs->max_ops = be32_to_cpup(p++);
5743 attrs->max_reqs = be32_to_cpup(p++);
5744 nr_attrs = be32_to_cpup(p);
5745 if (unlikely(nr_attrs > 1)) {
5746 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5747 "count %u\n", __func__, nr_attrs);
5750 if (nr_attrs == 1) {
5751 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5757 print_overflow_msg(__func__, xdr);
5761 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5763 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5766 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5767 struct nfs41_bind_conn_to_session_res *res)
5772 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5774 status = decode_sessionid(xdr, &res->sessionid);
5775 if (unlikely(status))
5778 /* dir flags, rdma mode bool */
5779 p = xdr_inline_decode(xdr, 8);
5783 res->dir = be32_to_cpup(p++);
5784 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5786 if (be32_to_cpup(p) == 0)
5787 res->use_conn_in_rdma_mode = false;
5789 res->use_conn_in_rdma_mode = true;
5793 print_overflow_msg(__func__, xdr);
5797 static int decode_create_session(struct xdr_stream *xdr,
5798 struct nfs41_create_session_res *res)
5803 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5805 status = decode_sessionid(xdr, &res->sessionid);
5806 if (unlikely(status))
5810 p = xdr_inline_decode(xdr, 8);
5813 res->seqid = be32_to_cpup(p++);
5814 res->flags = be32_to_cpup(p);
5816 /* Channel attributes */
5817 status = decode_chan_attrs(xdr, &res->fc_attrs);
5819 status = decode_chan_attrs(xdr, &res->bc_attrs);
5822 print_overflow_msg(__func__, xdr);
5826 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5828 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5831 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5833 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5836 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5838 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5840 #endif /* CONFIG_NFS_V4_1 */
5842 static int decode_sequence(struct xdr_stream *xdr,
5843 struct nfs4_sequence_res *res,
5844 struct rpc_rqst *rqstp)
5846 #if defined(CONFIG_NFS_V4_1)
5847 struct nfs4_session *session;
5848 struct nfs4_sessionid id;
5853 if (res->sr_slot == NULL)
5855 if (!res->sr_slot->table->session)
5858 status = decode_op_hdr(xdr, OP_SEQUENCE);
5860 status = decode_sessionid(xdr, &id);
5861 if (unlikely(status))
5865 * If the server returns different values for sessionID, slotID or
5866 * sequence number, the server is looney tunes.
5868 status = -EREMOTEIO;
5869 session = res->sr_slot->table->session;
5871 if (memcmp(id.data, session->sess_id.data,
5872 NFS4_MAX_SESSIONID_LEN)) {
5873 dprintk("%s Invalid session id\n", __func__);
5877 p = xdr_inline_decode(xdr, 20);
5882 dummy = be32_to_cpup(p++);
5883 if (dummy != res->sr_slot->seq_nr) {
5884 dprintk("%s Invalid sequence number\n", __func__);
5888 dummy = be32_to_cpup(p++);
5889 if (dummy != res->sr_slot->slot_nr) {
5890 dprintk("%s Invalid slot id\n", __func__);
5893 /* highest slot id */
5894 res->sr_highest_slotid = be32_to_cpup(p++);
5895 /* target highest slot id */
5896 res->sr_target_highest_slotid = be32_to_cpup(p++);
5898 res->sr_status_flags = be32_to_cpup(p);
5901 res->sr_status = status;
5904 print_overflow_msg(__func__, xdr);
5907 #else /* CONFIG_NFS_V4_1 */
5909 #endif /* CONFIG_NFS_V4_1 */
5912 #if defined(CONFIG_NFS_V4_1)
5913 static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5915 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5916 return decode_stateid(xdr, stateid);
5919 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5920 struct nfs4_getdeviceinfo_res *res)
5922 struct pnfs_device *pdev = res->pdev;
5927 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5929 if (status == -ETOOSMALL) {
5930 p = xdr_inline_decode(xdr, 4);
5933 pdev->mincount = be32_to_cpup(p);
5934 dprintk("%s: Min count too small. mincnt = %u\n",
5935 __func__, pdev->mincount);
5940 p = xdr_inline_decode(xdr, 8);
5943 type = be32_to_cpup(p++);
5944 if (type != pdev->layout_type) {
5945 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5946 __func__, pdev->layout_type, type);
5950 * Get the length of the opaque device_addr4. xdr_read_pages places
5951 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5952 * and places the remaining xdr data in xdr_buf->tail
5954 pdev->mincount = be32_to_cpup(p);
5955 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5958 /* Parse notification bitmap, verifying that it is zero. */
5959 p = xdr_inline_decode(xdr, 4);
5962 len = be32_to_cpup(p);
5966 p = xdr_inline_decode(xdr, 4 * len);
5970 res->notification = be32_to_cpup(p++);
5971 for (i = 1; i < len; i++) {
5972 if (be32_to_cpup(p++)) {
5973 dprintk("%s: unsupported notification\n",
5981 print_overflow_msg(__func__, xdr);
5985 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5986 struct nfs4_layoutget_res *res)
5993 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5996 p = xdr_inline_decode(xdr, 4);
5999 res->return_on_close = be32_to_cpup(p);
6000 decode_layout_stateid(xdr, &res->stateid);
6001 p = xdr_inline_decode(xdr, 4);
6004 layout_count = be32_to_cpup(p);
6005 if (!layout_count) {
6006 dprintk("%s: server responded with empty layout array\n",
6011 p = xdr_inline_decode(xdr, 28);
6014 p = xdr_decode_hyper(p, &res->range.offset);
6015 p = xdr_decode_hyper(p, &res->range.length);
6016 res->range.iomode = be32_to_cpup(p++);
6017 res->type = be32_to_cpup(p++);
6018 res->layoutp->len = be32_to_cpup(p);
6020 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
6022 (unsigned long)res->range.offset,
6023 (unsigned long)res->range.length,
6028 recvd = xdr_read_pages(xdr, res->layoutp->len);
6029 if (res->layoutp->len > recvd) {
6030 dprintk("NFS: server cheating in layoutget reply: "
6031 "layout len %u > recvd %u\n",
6032 res->layoutp->len, recvd);
6036 if (layout_count > 1) {
6037 /* We only handle a length one array at the moment. Any
6038 * further entries are just ignored. Note that this means
6039 * the client may see a response that is less than the
6040 * minimum it requested.
6042 dprintk("%s: server responded with %d layouts, dropping tail\n",
6043 __func__, layout_count);
6048 print_overflow_msg(__func__, xdr);
6052 static int decode_layoutreturn(struct xdr_stream *xdr,
6053 struct nfs4_layoutreturn_res *res)
6058 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6061 p = xdr_inline_decode(xdr, 4);
6064 res->lrs_present = be32_to_cpup(p);
6065 if (res->lrs_present)
6066 status = decode_layout_stateid(xdr, &res->stateid);
6069 print_overflow_msg(__func__, xdr);
6073 static int decode_layoutcommit(struct xdr_stream *xdr,
6074 struct rpc_rqst *req,
6075 struct nfs4_layoutcommit_res *res)
6081 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
6082 res->status = status;
6086 p = xdr_inline_decode(xdr, 4);
6089 sizechanged = be32_to_cpup(p);
6092 /* throw away new size */
6093 p = xdr_inline_decode(xdr, 8);
6099 print_overflow_msg(__func__, xdr);
6103 static int decode_test_stateid(struct xdr_stream *xdr,
6104 struct nfs41_test_stateid_res *res)
6110 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6114 p = xdr_inline_decode(xdr, 4);
6117 num_res = be32_to_cpup(p++);
6121 p = xdr_inline_decode(xdr, 4);
6124 res->status = be32_to_cpup(p++);
6128 print_overflow_msg(__func__, xdr);
6133 static int decode_free_stateid(struct xdr_stream *xdr,
6134 struct nfs41_free_stateid_res *res)
6136 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
6141 int decode_layoutreturn(struct xdr_stream *xdr,
6142 struct nfs4_layoutreturn_res *res)
6146 #endif /* CONFIG_NFS_V4_1 */
6149 * END OF "GENERIC" DECODE ROUTINES.
6153 * Decode OPEN_DOWNGRADE response
6155 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6156 struct xdr_stream *xdr,
6159 struct nfs_closeres *res = data;
6160 struct compound_hdr hdr;
6163 status = decode_compound_hdr(xdr, &hdr);
6166 status = decode_sequence(xdr, &res->seq_res, rqstp);
6169 status = decode_putfh(xdr);
6173 status = decode_layoutreturn(xdr, res->lr_res);
6174 res->lr_ret = status;
6178 status = decode_open_downgrade(xdr, res);
6184 * Decode ACCESS response
6186 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6189 struct nfs4_accessres *res = data;
6190 struct compound_hdr hdr;
6193 status = decode_compound_hdr(xdr, &hdr);
6196 status = decode_sequence(xdr, &res->seq_res, rqstp);
6199 status = decode_putfh(xdr);
6202 status = decode_access(xdr, &res->supported, &res->access);
6205 decode_getfattr(xdr, res->fattr, res->server);
6211 * Decode LOOKUP response
6213 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6216 struct nfs4_lookup_res *res = data;
6217 struct compound_hdr hdr;
6220 status = decode_compound_hdr(xdr, &hdr);
6223 status = decode_sequence(xdr, &res->seq_res, rqstp);
6226 status = decode_putfh(xdr);
6229 status = decode_lookup(xdr);
6232 status = decode_getfh(xdr, res->fh);
6235 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6241 * Decode LOOKUP_ROOT response
6243 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6244 struct xdr_stream *xdr,
6247 struct nfs4_lookup_res *res = data;
6248 struct compound_hdr hdr;
6251 status = decode_compound_hdr(xdr, &hdr);
6254 status = decode_sequence(xdr, &res->seq_res, rqstp);
6257 status = decode_putrootfh(xdr);
6260 status = decode_getfh(xdr, res->fh);
6262 status = decode_getfattr_label(xdr, res->fattr,
6263 res->label, res->server);
6269 * Decode REMOVE response
6271 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6274 struct nfs_removeres *res = data;
6275 struct compound_hdr hdr;
6278 status = decode_compound_hdr(xdr, &hdr);
6281 status = decode_sequence(xdr, &res->seq_res, rqstp);
6284 status = decode_putfh(xdr);
6287 status = decode_remove(xdr, &res->cinfo);
6293 * Decode RENAME response
6295 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6298 struct nfs_renameres *res = data;
6299 struct compound_hdr hdr;
6302 status = decode_compound_hdr(xdr, &hdr);
6305 status = decode_sequence(xdr, &res->seq_res, rqstp);
6308 status = decode_putfh(xdr);
6311 status = decode_savefh(xdr);
6314 status = decode_putfh(xdr);
6317 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6323 * Decode LINK response
6325 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6328 struct nfs4_link_res *res = data;
6329 struct compound_hdr hdr;
6332 status = decode_compound_hdr(xdr, &hdr);
6335 status = decode_sequence(xdr, &res->seq_res, rqstp);
6338 status = decode_putfh(xdr);
6341 status = decode_savefh(xdr);
6344 status = decode_putfh(xdr);
6347 status = decode_link(xdr, &res->cinfo);
6351 * Note order: OP_LINK leaves the directory as the current
6354 status = decode_restorefh(xdr);
6357 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6363 * Decode CREATE response
6365 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6368 struct nfs4_create_res *res = data;
6369 struct compound_hdr hdr;
6372 status = decode_compound_hdr(xdr, &hdr);
6375 status = decode_sequence(xdr, &res->seq_res, rqstp);
6378 status = decode_putfh(xdr);
6381 status = decode_create(xdr, &res->dir_cinfo);
6384 status = decode_getfh(xdr, res->fh);
6387 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6393 * Decode SYMLINK response
6395 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6398 return nfs4_xdr_dec_create(rqstp, xdr, res);
6402 * Decode GETATTR response
6404 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6407 struct nfs4_getattr_res *res = data;
6408 struct compound_hdr hdr;
6411 status = decode_compound_hdr(xdr, &hdr);
6414 status = decode_sequence(xdr, &res->seq_res, rqstp);
6417 status = decode_putfh(xdr);
6420 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6426 * Encode an SETACL request
6428 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6431 const struct nfs_setaclargs *args = data;
6432 struct compound_hdr hdr = {
6433 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6436 encode_compound_hdr(xdr, req, &hdr);
6437 encode_sequence(xdr, &args->seq_args, &hdr);
6438 encode_putfh(xdr, args->fh, &hdr);
6439 encode_setacl(xdr, args, &hdr);
6444 * Decode SETACL response
6447 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6450 struct nfs_setaclres *res = data;
6451 struct compound_hdr hdr;
6454 status = decode_compound_hdr(xdr, &hdr);
6457 status = decode_sequence(xdr, &res->seq_res, rqstp);
6460 status = decode_putfh(xdr);
6463 status = decode_setattr(xdr);
6469 * Decode GETACL response
6472 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6475 struct nfs_getaclres *res = data;
6476 struct compound_hdr hdr;
6479 if (res->acl_scratch != NULL) {
6480 void *p = page_address(res->acl_scratch);
6481 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6483 status = decode_compound_hdr(xdr, &hdr);
6486 status = decode_sequence(xdr, &res->seq_res, rqstp);
6489 status = decode_putfh(xdr);
6492 status = decode_getacl(xdr, rqstp, res);
6499 * Decode CLOSE response
6501 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6504 struct nfs_closeres *res = data;
6505 struct compound_hdr hdr;
6508 status = decode_compound_hdr(xdr, &hdr);
6511 status = decode_sequence(xdr, &res->seq_res, rqstp);
6514 status = decode_putfh(xdr);
6518 status = decode_layoutreturn(xdr, res->lr_res);
6519 res->lr_ret = status;
6523 if (res->fattr != NULL) {
6524 status = decode_getfattr(xdr, res->fattr, res->server);
6528 status = decode_close(xdr, res);
6534 * Decode OPEN response
6536 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6539 struct nfs_openres *res = data;
6540 struct compound_hdr hdr;
6543 status = decode_compound_hdr(xdr, &hdr);
6546 status = decode_sequence(xdr, &res->seq_res, rqstp);
6549 status = decode_putfh(xdr);
6552 status = decode_open(xdr, res);
6555 status = decode_getfh(xdr, &res->fh);
6558 if (res->access_request)
6559 decode_access(xdr, &res->access_supported, &res->access_result);
6560 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6566 * Decode OPEN_CONFIRM response
6568 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6569 struct xdr_stream *xdr,
6572 struct nfs_open_confirmres *res = data;
6573 struct compound_hdr hdr;
6576 status = decode_compound_hdr(xdr, &hdr);
6579 status = decode_putfh(xdr);
6582 status = decode_open_confirm(xdr, res);
6588 * Decode OPEN response
6590 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6591 struct xdr_stream *xdr,
6594 struct nfs_openres *res = data;
6595 struct compound_hdr hdr;
6598 status = decode_compound_hdr(xdr, &hdr);
6601 status = decode_sequence(xdr, &res->seq_res, rqstp);
6604 status = decode_putfh(xdr);
6607 status = decode_open(xdr, res);
6610 if (res->access_request)
6611 decode_access(xdr, &res->access_supported, &res->access_result);
6612 decode_getfattr(xdr, res->f_attr, res->server);
6618 * Decode SETATTR response
6620 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6621 struct xdr_stream *xdr,
6624 struct nfs_setattrres *res = data;
6625 struct compound_hdr hdr;
6628 status = decode_compound_hdr(xdr, &hdr);
6631 status = decode_sequence(xdr, &res->seq_res, rqstp);
6634 status = decode_putfh(xdr);
6637 status = decode_setattr(xdr);
6640 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6646 * Decode LOCK response
6648 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6651 struct nfs_lock_res *res = data;
6652 struct compound_hdr hdr;
6655 status = decode_compound_hdr(xdr, &hdr);
6658 status = decode_sequence(xdr, &res->seq_res, rqstp);
6661 status = decode_putfh(xdr);
6664 status = decode_lock(xdr, res);
6670 * Decode LOCKT response
6672 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6675 struct nfs_lockt_res *res = data;
6676 struct compound_hdr hdr;
6679 status = decode_compound_hdr(xdr, &hdr);
6682 status = decode_sequence(xdr, &res->seq_res, rqstp);
6685 status = decode_putfh(xdr);
6688 status = decode_lockt(xdr, res);
6694 * Decode LOCKU response
6696 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6699 struct nfs_locku_res *res = data;
6700 struct compound_hdr hdr;
6703 status = decode_compound_hdr(xdr, &hdr);
6706 status = decode_sequence(xdr, &res->seq_res, rqstp);
6709 status = decode_putfh(xdr);
6712 status = decode_locku(xdr, res);
6717 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6718 struct xdr_stream *xdr, void *dummy)
6720 struct compound_hdr hdr;
6723 status = decode_compound_hdr(xdr, &hdr);
6725 status = decode_release_lockowner(xdr);
6730 * Decode READLINK response
6732 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6733 struct xdr_stream *xdr,
6736 struct nfs4_readlink_res *res = data;
6737 struct compound_hdr hdr;
6740 status = decode_compound_hdr(xdr, &hdr);
6743 status = decode_sequence(xdr, &res->seq_res, rqstp);
6746 status = decode_putfh(xdr);
6749 status = decode_readlink(xdr, rqstp);
6755 * Decode READDIR response
6757 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6760 struct nfs4_readdir_res *res = data;
6761 struct compound_hdr hdr;
6764 status = decode_compound_hdr(xdr, &hdr);
6767 status = decode_sequence(xdr, &res->seq_res, rqstp);
6770 status = decode_putfh(xdr);
6773 status = decode_readdir(xdr, rqstp, res);
6779 * Decode Read response
6781 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6784 struct nfs_pgio_res *res = data;
6785 struct compound_hdr hdr;
6788 status = decode_compound_hdr(xdr, &hdr);
6789 res->op_status = hdr.status;
6792 status = decode_sequence(xdr, &res->seq_res, rqstp);
6795 status = decode_putfh(xdr);
6798 status = decode_read(xdr, rqstp, res);
6800 status = res->count;
6806 * Decode WRITE response
6808 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6811 struct nfs_pgio_res *res = data;
6812 struct compound_hdr hdr;
6815 status = decode_compound_hdr(xdr, &hdr);
6816 res->op_status = hdr.status;
6819 status = decode_sequence(xdr, &res->seq_res, rqstp);
6822 status = decode_putfh(xdr);
6825 status = decode_write(xdr, res);
6829 decode_getfattr(xdr, res->fattr, res->server);
6831 status = res->count;
6837 * Decode COMMIT response
6839 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6842 struct nfs_commitres *res = data;
6843 struct compound_hdr hdr;
6846 status = decode_compound_hdr(xdr, &hdr);
6847 res->op_status = hdr.status;
6850 status = decode_sequence(xdr, &res->seq_res, rqstp);
6853 status = decode_putfh(xdr);
6856 status = decode_commit(xdr, res);
6862 * Decode FSINFO response
6864 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6867 struct nfs4_fsinfo_res *res = data;
6868 struct compound_hdr hdr;
6871 status = decode_compound_hdr(xdr, &hdr);
6873 status = decode_sequence(xdr, &res->seq_res, req);
6875 status = decode_putfh(xdr);
6877 status = decode_fsinfo(xdr, res->fsinfo);
6882 * Decode PATHCONF response
6884 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6887 struct nfs4_pathconf_res *res = data;
6888 struct compound_hdr hdr;
6891 status = decode_compound_hdr(xdr, &hdr);
6893 status = decode_sequence(xdr, &res->seq_res, req);
6895 status = decode_putfh(xdr);
6897 status = decode_pathconf(xdr, res->pathconf);
6902 * Decode STATFS response
6904 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6907 struct nfs4_statfs_res *res = data;
6908 struct compound_hdr hdr;
6911 status = decode_compound_hdr(xdr, &hdr);
6913 status = decode_sequence(xdr, &res->seq_res, req);
6915 status = decode_putfh(xdr);
6917 status = decode_statfs(xdr, res->fsstat);
6922 * Decode GETATTR_BITMAP response
6924 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6925 struct xdr_stream *xdr,
6928 struct nfs4_server_caps_res *res = data;
6929 struct compound_hdr hdr;
6932 status = decode_compound_hdr(xdr, &hdr);
6935 status = decode_sequence(xdr, &res->seq_res, req);
6938 status = decode_putfh(xdr);
6941 status = decode_server_caps(xdr, res);
6947 * Decode RENEW response
6949 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6952 struct compound_hdr hdr;
6955 status = decode_compound_hdr(xdr, &hdr);
6957 status = decode_renew(xdr);
6962 * Decode SETCLIENTID response
6964 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6965 struct xdr_stream *xdr,
6968 struct nfs4_setclientid_res *res = data;
6969 struct compound_hdr hdr;
6972 status = decode_compound_hdr(xdr, &hdr);
6974 status = decode_setclientid(xdr, res);
6979 * Decode SETCLIENTID_CONFIRM response
6981 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6982 struct xdr_stream *xdr,
6985 struct compound_hdr hdr;
6988 status = decode_compound_hdr(xdr, &hdr);
6990 status = decode_setclientid_confirm(xdr);
6995 * Decode DELEGRETURN response
6997 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6998 struct xdr_stream *xdr,
7001 struct nfs4_delegreturnres *res = data;
7002 struct compound_hdr hdr;
7005 status = decode_compound_hdr(xdr, &hdr);
7008 status = decode_sequence(xdr, &res->seq_res, rqstp);
7011 status = decode_putfh(xdr);
7015 status = decode_layoutreturn(xdr, res->lr_res);
7016 res->lr_ret = status;
7021 status = decode_getfattr(xdr, res->fattr, res->server);
7025 status = decode_delegreturn(xdr);
7031 * Decode FS_LOCATIONS response
7033 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
7034 struct xdr_stream *xdr,
7037 struct nfs4_fs_locations_res *res = data;
7038 struct compound_hdr hdr;
7041 status = decode_compound_hdr(xdr, &hdr);
7044 status = decode_sequence(xdr, &res->seq_res, req);
7047 status = decode_putfh(xdr);
7050 if (res->migration) {
7051 xdr_enter_page(xdr, PAGE_SIZE);
7052 status = decode_getfattr_generic(xdr,
7053 &res->fs_locations->fattr,
7054 NULL, res->fs_locations,
7055 NULL, res->fs_locations->server);
7059 status = decode_renew(xdr);
7061 status = decode_lookup(xdr);
7064 xdr_enter_page(xdr, PAGE_SIZE);
7065 status = decode_getfattr_generic(xdr,
7066 &res->fs_locations->fattr,
7067 NULL, res->fs_locations,
7068 NULL, res->fs_locations->server);
7075 * Decode SECINFO response
7077 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
7078 struct xdr_stream *xdr,
7081 struct nfs4_secinfo_res *res = data;
7082 struct compound_hdr hdr;
7085 status = decode_compound_hdr(xdr, &hdr);
7088 status = decode_sequence(xdr, &res->seq_res, rqstp);
7091 status = decode_putfh(xdr);
7094 status = decode_secinfo(xdr, res);
7100 * Decode FSID_PRESENT response
7102 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7103 struct xdr_stream *xdr,
7106 struct nfs4_fsid_present_res *res = data;
7107 struct compound_hdr hdr;
7110 status = decode_compound_hdr(xdr, &hdr);
7113 status = decode_sequence(xdr, &res->seq_res, rqstp);
7116 status = decode_putfh(xdr);
7119 status = decode_getfh(xdr, res->fh);
7123 status = decode_renew(xdr);
7128 #if defined(CONFIG_NFS_V4_1)
7130 * Decode BIND_CONN_TO_SESSION response
7132 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7133 struct xdr_stream *xdr,
7136 struct compound_hdr hdr;
7139 status = decode_compound_hdr(xdr, &hdr);
7141 status = decode_bind_conn_to_session(xdr, res);
7146 * Decode EXCHANGE_ID response
7148 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7149 struct xdr_stream *xdr,
7152 struct compound_hdr hdr;
7155 status = decode_compound_hdr(xdr, &hdr);
7157 status = decode_exchange_id(xdr, res);
7162 * Decode CREATE_SESSION response
7164 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7165 struct xdr_stream *xdr,
7168 struct compound_hdr hdr;
7171 status = decode_compound_hdr(xdr, &hdr);
7173 status = decode_create_session(xdr, res);
7178 * Decode DESTROY_SESSION response
7180 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7181 struct xdr_stream *xdr,
7184 struct compound_hdr hdr;
7187 status = decode_compound_hdr(xdr, &hdr);
7189 status = decode_destroy_session(xdr, res);
7194 * Decode DESTROY_CLIENTID response
7196 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7197 struct xdr_stream *xdr,
7200 struct compound_hdr hdr;
7203 status = decode_compound_hdr(xdr, &hdr);
7205 status = decode_destroy_clientid(xdr, res);
7210 * Decode SEQUENCE response
7212 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7213 struct xdr_stream *xdr,
7216 struct compound_hdr hdr;
7219 status = decode_compound_hdr(xdr, &hdr);
7221 status = decode_sequence(xdr, res, rqstp);
7226 * Decode GET_LEASE_TIME response
7228 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7229 struct xdr_stream *xdr,
7232 struct nfs4_get_lease_time_res *res = data;
7233 struct compound_hdr hdr;
7236 status = decode_compound_hdr(xdr, &hdr);
7238 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
7240 status = decode_putrootfh(xdr);
7242 status = decode_fsinfo(xdr, res->lr_fsinfo);
7247 * Decode RECLAIM_COMPLETE response
7249 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7250 struct xdr_stream *xdr,
7253 struct nfs41_reclaim_complete_res *res = data;
7254 struct compound_hdr hdr;
7257 status = decode_compound_hdr(xdr, &hdr);
7259 status = decode_sequence(xdr, &res->seq_res, rqstp);
7261 status = decode_reclaim_complete(xdr, NULL);
7266 * Decode GETDEVINFO response
7268 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7269 struct xdr_stream *xdr,
7272 struct nfs4_getdeviceinfo_res *res = data;
7273 struct compound_hdr hdr;
7276 status = decode_compound_hdr(xdr, &hdr);
7279 status = decode_sequence(xdr, &res->seq_res, rqstp);
7282 status = decode_getdeviceinfo(xdr, res);
7288 * Decode LAYOUTGET response
7290 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7291 struct xdr_stream *xdr,
7294 struct nfs4_layoutget_res *res = data;
7295 struct compound_hdr hdr;
7298 status = decode_compound_hdr(xdr, &hdr);
7301 status = decode_sequence(xdr, &res->seq_res, rqstp);
7304 status = decode_putfh(xdr);
7307 status = decode_layoutget(xdr, rqstp, res);
7313 * Decode LAYOUTRETURN response
7315 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7316 struct xdr_stream *xdr,
7319 struct nfs4_layoutreturn_res *res = data;
7320 struct compound_hdr hdr;
7323 status = decode_compound_hdr(xdr, &hdr);
7326 status = decode_sequence(xdr, &res->seq_res, rqstp);
7329 status = decode_putfh(xdr);
7332 status = decode_layoutreturn(xdr, res);
7338 * Decode LAYOUTCOMMIT response
7340 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7341 struct xdr_stream *xdr,
7344 struct nfs4_layoutcommit_res *res = data;
7345 struct compound_hdr hdr;
7348 status = decode_compound_hdr(xdr, &hdr);
7351 status = decode_sequence(xdr, &res->seq_res, rqstp);
7354 status = decode_putfh(xdr);
7357 status = decode_layoutcommit(xdr, rqstp, res);
7360 decode_getfattr(xdr, res->fattr, res->server);
7366 * Decode SECINFO_NO_NAME response
7368 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7369 struct xdr_stream *xdr,
7372 struct nfs4_secinfo_res *res = data;
7373 struct compound_hdr hdr;
7376 status = decode_compound_hdr(xdr, &hdr);
7379 status = decode_sequence(xdr, &res->seq_res, rqstp);
7382 status = decode_putrootfh(xdr);
7385 status = decode_secinfo_no_name(xdr, res);
7391 * Decode TEST_STATEID response
7393 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7394 struct xdr_stream *xdr,
7397 struct nfs41_test_stateid_res *res = data;
7398 struct compound_hdr hdr;
7401 status = decode_compound_hdr(xdr, &hdr);
7404 status = decode_sequence(xdr, &res->seq_res, rqstp);
7407 status = decode_test_stateid(xdr, res);
7413 * Decode FREE_STATEID response
7415 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7416 struct xdr_stream *xdr,
7419 struct nfs41_free_stateid_res *res = data;
7420 struct compound_hdr hdr;
7423 status = decode_compound_hdr(xdr, &hdr);
7426 status = decode_sequence(xdr, &res->seq_res, rqstp);
7429 status = decode_free_stateid(xdr, res);
7433 #endif /* CONFIG_NFS_V4_1 */
7436 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7437 * the local page cache.
7438 * @xdr: XDR stream where entry resides
7439 * @entry: buffer to fill in with entry data
7440 * @plus: boolean indicating whether this should be a readdirplus entry
7442 * Returns zero if successful, otherwise a negative errno value is
7445 * This function is not invoked during READDIR reply decoding, but
7446 * rather whenever an application invokes the getdents(2) system call
7447 * on a directory already in our cache.
7449 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7453 uint32_t bitmap[3] = {0};
7455 __be32 *p = xdr_inline_decode(xdr, 4);
7458 if (*p == xdr_zero) {
7459 p = xdr_inline_decode(xdr, 4);
7468 p = xdr_inline_decode(xdr, 12);
7471 entry->prev_cookie = entry->cookie;
7472 p = xdr_decode_hyper(p, &entry->cookie);
7473 entry->len = be32_to_cpup(p);
7475 p = xdr_inline_decode(xdr, entry->len);
7478 entry->name = (const char *) p;
7481 * In case the server doesn't return an inode number,
7482 * we fake one here. (We don't use inode number 0,
7483 * since glibc seems to choke on it...)
7486 entry->fattr->valid = 0;
7488 if (decode_attr_bitmap(xdr, bitmap) < 0)
7491 if (decode_attr_length(xdr, &len, &savep) < 0)
7494 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7495 NULL, entry->label, entry->server) < 0)
7497 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7498 entry->ino = entry->fattr->mounted_on_fileid;
7499 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7500 entry->ino = entry->fattr->fileid;
7502 entry->d_type = DT_UNKNOWN;
7503 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7504 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7509 print_overflow_msg(__func__, xdr);
7514 * We need to translate between nfs status return values and
7515 * the local errno values which may not be the same.
7522 { NFS4ERR_PERM, -EPERM },
7523 { NFS4ERR_NOENT, -ENOENT },
7524 { NFS4ERR_IO, -errno_NFSERR_IO},
7525 { NFS4ERR_NXIO, -ENXIO },
7526 { NFS4ERR_ACCESS, -EACCES },
7527 { NFS4ERR_EXIST, -EEXIST },
7528 { NFS4ERR_XDEV, -EXDEV },
7529 { NFS4ERR_NOTDIR, -ENOTDIR },
7530 { NFS4ERR_ISDIR, -EISDIR },
7531 { NFS4ERR_INVAL, -EINVAL },
7532 { NFS4ERR_FBIG, -EFBIG },
7533 { NFS4ERR_NOSPC, -ENOSPC },
7534 { NFS4ERR_ROFS, -EROFS },
7535 { NFS4ERR_MLINK, -EMLINK },
7536 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7537 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7538 { NFS4ERR_DQUOT, -EDQUOT },
7539 { NFS4ERR_STALE, -ESTALE },
7540 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7541 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7542 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7543 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7544 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7545 { NFS4ERR_BADTYPE, -EBADTYPE },
7546 { NFS4ERR_LOCKED, -EAGAIN },
7547 { NFS4ERR_SYMLINK, -ELOOP },
7548 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7549 { NFS4ERR_DEADLOCK, -EDEADLK },
7554 * Convert an NFS error code to a local one.
7555 * This one is used jointly by NFSv2 and NFSv3.
7558 nfs4_stat_to_errno(int stat)
7561 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7562 if (nfs_errtbl[i].stat == stat)
7563 return nfs_errtbl[i].errno;
7565 if (stat <= 10000 || stat > 10100) {
7566 /* The server is looney tunes. */
7569 /* If we cannot translate the error, the recovery routines should
7571 * Note: remaining NFSv4 error codes have values > 10000, so should
7572 * not conflict with native Linux error codes.
7577 #ifdef CONFIG_NFS_V4_2
7578 #include "nfs42xdr.c"
7579 #endif /* CONFIG_NFS_V4_2 */
7581 #define PROC(proc, argtype, restype) \
7582 [NFSPROC4_CLNT_##proc] = { \
7583 .p_proc = NFSPROC4_COMPOUND, \
7584 .p_encode = nfs4_xdr_##argtype, \
7585 .p_decode = nfs4_xdr_##restype, \
7586 .p_arglen = NFS4_##argtype##_sz, \
7587 .p_replen = NFS4_##restype##_sz, \
7588 .p_statidx = NFSPROC4_CLNT_##proc, \
7592 #define STUB(proc) \
7593 [NFSPROC4_CLNT_##proc] = { \
7597 const struct rpc_procinfo nfs4_procedures[] = {
7598 PROC(READ, enc_read, dec_read),
7599 PROC(WRITE, enc_write, dec_write),
7600 PROC(COMMIT, enc_commit, dec_commit),
7601 PROC(OPEN, enc_open, dec_open),
7602 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7603 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7604 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7605 PROC(CLOSE, enc_close, dec_close),
7606 PROC(SETATTR, enc_setattr, dec_setattr),
7607 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7608 PROC(RENEW, enc_renew, dec_renew),
7609 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7610 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7611 PROC(LOCK, enc_lock, dec_lock),
7612 PROC(LOCKT, enc_lockt, dec_lockt),
7613 PROC(LOCKU, enc_locku, dec_locku),
7614 PROC(ACCESS, enc_access, dec_access),
7615 PROC(GETATTR, enc_getattr, dec_getattr),
7616 PROC(LOOKUP, enc_lookup, dec_lookup),
7617 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7618 PROC(REMOVE, enc_remove, dec_remove),
7619 PROC(RENAME, enc_rename, dec_rename),
7620 PROC(LINK, enc_link, dec_link),
7621 PROC(SYMLINK, enc_symlink, dec_symlink),
7622 PROC(CREATE, enc_create, dec_create),
7623 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7624 PROC(STATFS, enc_statfs, dec_statfs),
7625 PROC(READLINK, enc_readlink, dec_readlink),
7626 PROC(READDIR, enc_readdir, dec_readdir),
7627 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7628 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7629 PROC(GETACL, enc_getacl, dec_getacl),
7630 PROC(SETACL, enc_setacl, dec_setacl),
7631 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7632 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7633 PROC(SECINFO, enc_secinfo, dec_secinfo),
7634 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
7635 #if defined(CONFIG_NFS_V4_1)
7636 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7637 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7638 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7639 PROC(SEQUENCE, enc_sequence, dec_sequence),
7640 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7641 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7642 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7643 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7644 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7645 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7646 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7647 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7648 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7649 STUB(GETDEVICELIST),
7650 PROC(BIND_CONN_TO_SESSION,
7651 enc_bind_conn_to_session, dec_bind_conn_to_session),
7652 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7653 #endif /* CONFIG_NFS_V4_1 */
7654 #ifdef CONFIG_NFS_V4_2
7655 PROC(SEEK, enc_seek, dec_seek),
7656 PROC(ALLOCATE, enc_allocate, dec_allocate),
7657 PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
7658 PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
7659 PROC(CLONE, enc_clone, dec_clone),
7660 PROC(COPY, enc_copy, dec_copy),
7661 #endif /* CONFIG_NFS_V4_2 */
7664 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];
7665 const struct rpc_version nfs_version4 = {
7667 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7668 .procs = nfs4_procedures,
7669 .counts = nfs_version4_counts,