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/nfs_idmap.h>
59 #include "nfs4session.h"
63 #define NFSDBG_FACILITY NFSDBG_XDR
65 /* Mapping from NFS error code to "errno" error code. */
66 #define errno_NFSERR_IO EIO
68 static int nfs4_stat_to_errno(int);
70 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
72 #define NFS4_MAXTAGLEN 20
74 #define NFS4_MAXTAGLEN 0
77 /* lock,open owner id:
78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
80 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
81 #define lock_owner_id_maxsz (1 + 1 + 4)
82 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
83 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85 #define op_encode_hdr_maxsz (1)
86 #define op_decode_hdr_maxsz (2)
87 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
91 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
93 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
94 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
97 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
99 #define nfs4_fattr_bitmap_maxsz 4
100 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
101 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
103 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
105 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
106 /* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
107 #define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
108 #define encode_readdir_space 24
109 #define encode_readdir_bitmask_sz 3
111 #define nfs4_label_maxsz 0
112 #define encode_readdir_space 20
113 #define encode_readdir_bitmask_sz 2
115 /* We support only one layout type per file system */
116 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
117 /* This is based on getfattr, which uses the most attributes: */
118 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
119 3 + 3 + 3 + nfs4_owner_maxsz + \
120 nfs4_group_maxsz + nfs4_label_maxsz + \
121 decode_mdsthreshold_maxsz))
122 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
123 nfs4_fattr_value_maxsz)
124 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
125 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
131 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
132 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
133 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
134 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
135 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
136 /* The 5 accounts for the PNFS attributes, and assumes that at most three
137 * layout types will be returned.
139 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
140 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
141 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
142 #define decode_renew_maxsz (op_decode_hdr_maxsz)
143 #define encode_setclientid_maxsz \
144 (op_encode_hdr_maxsz + \
145 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
146 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
148 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
149 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
151 #define decode_setclientid_maxsz \
152 (op_decode_hdr_maxsz + \
154 1024) /* large value for CLID_INUSE */
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_ace_maxsz (3 + nfs4_owner_maxsz)
173 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
175 #define decode_change_info_maxsz (5)
176 #define decode_open_maxsz (op_decode_hdr_maxsz + \
177 decode_stateid_maxsz + \
178 decode_change_info_maxsz + 1 + \
179 nfs4_fattr_bitmap_maxsz + \
180 decode_delegation_maxsz)
181 #define encode_open_confirm_maxsz \
182 (op_encode_hdr_maxsz + \
183 encode_stateid_maxsz + 1)
184 #define decode_open_confirm_maxsz \
185 (op_decode_hdr_maxsz + \
186 decode_stateid_maxsz)
187 #define encode_open_downgrade_maxsz \
188 (op_encode_hdr_maxsz + \
189 encode_stateid_maxsz + 1 + \
190 encode_share_access_maxsz)
191 #define decode_open_downgrade_maxsz \
192 (op_decode_hdr_maxsz + \
193 decode_stateid_maxsz)
194 #define encode_close_maxsz (op_encode_hdr_maxsz + \
195 1 + encode_stateid_maxsz)
196 #define decode_close_maxsz (op_decode_hdr_maxsz + \
197 decode_stateid_maxsz)
198 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
199 encode_stateid_maxsz + \
201 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
202 nfs4_fattr_bitmap_maxsz)
203 #define encode_read_maxsz (op_encode_hdr_maxsz + \
204 encode_stateid_maxsz + 3)
205 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
206 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
207 2 + encode_verifier_maxsz + 5 + \
209 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
210 decode_verifier_maxsz + \
211 nfs4_label_maxsz + nfs4_fattr_maxsz)
212 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
213 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
214 #define encode_write_maxsz (op_encode_hdr_maxsz + \
215 encode_stateid_maxsz + 4)
216 #define decode_write_maxsz (op_decode_hdr_maxsz + \
217 2 + decode_verifier_maxsz)
218 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
219 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
220 decode_verifier_maxsz)
221 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
223 #define decode_remove_maxsz (op_decode_hdr_maxsz + \
224 decode_change_info_maxsz)
225 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
227 #define decode_rename_maxsz (op_decode_hdr_maxsz + \
228 decode_change_info_maxsz + \
229 decode_change_info_maxsz)
230 #define encode_link_maxsz (op_encode_hdr_maxsz + \
232 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
233 #define encode_lockowner_maxsz (7)
234 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
236 1 + encode_stateid_maxsz + 1 + \
237 encode_lockowner_maxsz)
238 #define decode_lock_denied_maxsz \
239 (8 + decode_lockowner_maxsz)
240 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
241 decode_lock_denied_maxsz)
242 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
243 encode_lockowner_maxsz)
244 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
245 decode_lock_denied_maxsz)
246 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
247 encode_stateid_maxsz + \
249 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
250 decode_stateid_maxsz)
251 #define encode_release_lockowner_maxsz \
252 (op_encode_hdr_maxsz + \
253 encode_lockowner_maxsz)
254 #define decode_release_lockowner_maxsz \
255 (op_decode_hdr_maxsz)
256 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
257 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
258 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
259 1 + nfs4_name_maxsz + \
262 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
263 #define encode_create_maxsz (op_encode_hdr_maxsz + \
264 1 + 2 + nfs4_name_maxsz + \
266 #define decode_create_maxsz (op_decode_hdr_maxsz + \
267 decode_change_info_maxsz + \
268 nfs4_fattr_bitmap_maxsz)
269 #define encode_statfs_maxsz (encode_getattr_maxsz)
270 #define decode_statfs_maxsz (decode_getattr_maxsz)
271 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
272 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
273 #define encode_getacl_maxsz (encode_getattr_maxsz)
274 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
275 nfs4_fattr_bitmap_maxsz + 1)
276 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
277 encode_stateid_maxsz + 3)
278 #define decode_setacl_maxsz (decode_setattr_maxsz)
279 #define encode_fs_locations_maxsz \
280 (encode_getattr_maxsz)
281 #define decode_fs_locations_maxsz \
283 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
284 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
286 #if defined(CONFIG_NFS_V4_1)
287 #define NFS4_MAX_MACHINE_NAME_LEN (64)
288 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
289 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
291 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
292 encode_verifier_maxsz + \
293 1 /* co_ownerid.len */ + \
294 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
297 0 /* SP4_NONE (for now) */ + \
298 1 /* implementation id array of size 1 */ + \
299 1 /* nii_domain */ + \
300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
302 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
304 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
305 2 /* eir_clientid */ + \
306 1 /* eir_sequenceid */ + \
307 1 /* eir_flags */ + \
309 0 /* SP4_NONE (for now) */ + \
310 2 /* eir_server_owner.so_minor_id */ + \
311 /* eir_server_owner.so_major_id<> */ \
312 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
313 /* eir_server_scope<> */ \
314 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
315 1 /* eir_server_impl_id array length */ + \
316 1 /* nii_domain */ + \
317 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
319 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
321 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
322 #define decode_channel_attrs_maxsz (6 + \
323 1 /* ca_rdma_ird.len */ + \
325 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \
326 2 /* csa_clientid */ + \
327 1 /* csa_sequence */ + \
328 1 /* csa_flags */ + \
329 encode_channel_attrs_maxsz + \
330 encode_channel_attrs_maxsz + \
331 1 /* csa_cb_program */ + \
332 1 /* csa_sec_parms.len (1) */ + \
333 1 /* cb_secflavor (AUTH_SYS) */ + \
335 1 /* machinename.len */ + \
336 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
339 1 /* gids.len (0) */)
340 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \
341 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
342 1 /* csr_sequence */ + \
343 1 /* csr_flags */ + \
344 decode_channel_attrs_maxsz + \
345 decode_channel_attrs_maxsz)
346 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
348 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
349 1 /* bctsa_dir */ + \
350 1 /* bctsa_use_conn_in_rdma_mode */)
351 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
353 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
354 1 /* bctsr_dir */ + \
355 1 /* bctsr_use_conn_in_rdma_mode */)
356 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
357 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
358 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
359 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
360 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \
361 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
362 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \
363 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
364 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
365 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
366 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
367 encode_verifier_maxsz)
368 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
369 2 /* nfs_cookie4 gdlr_cookie */ + \
370 decode_verifier_maxsz \
371 /* verifier4 gdlr_verifier */ + \
372 1 /* gdlr_deviceid_list count */ + \
373 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
374 NFS4_DEVICEID4_SIZE) \
375 /* gdlr_deviceid_list */ + \
376 1 /* bool gdlr_eof */)
377 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
378 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
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 */)
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 /* NULL filelayout layoutupdate4 payload */)
400 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
401 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
402 encode_stateid_maxsz + \
403 1 /* FIXME: opaque lrf_body always empty at the moment */)
404 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
405 1 + decode_stateid_maxsz)
406 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
407 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
408 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
409 XDR_QUADLEN(NFS4_STATEID_SIZE))
410 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
411 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
412 XDR_QUADLEN(NFS4_STATEID_SIZE))
413 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
414 #else /* CONFIG_NFS_V4_1 */
415 #define encode_sequence_maxsz 0
416 #define decode_sequence_maxsz 0
417 #endif /* CONFIG_NFS_V4_1 */
419 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
420 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
421 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
422 encode_sequence_maxsz + \
423 encode_putfh_maxsz + \
425 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
426 decode_sequence_maxsz + \
427 decode_putfh_maxsz + \
429 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
430 encode_sequence_maxsz + \
431 encode_putfh_maxsz + \
432 encode_readlink_maxsz)
433 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
434 decode_sequence_maxsz + \
435 decode_putfh_maxsz + \
436 decode_readlink_maxsz)
437 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
438 encode_sequence_maxsz + \
439 encode_putfh_maxsz + \
440 encode_readdir_maxsz)
441 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
442 decode_sequence_maxsz + \
443 decode_putfh_maxsz + \
444 decode_readdir_maxsz)
445 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
446 encode_sequence_maxsz + \
447 encode_putfh_maxsz + \
448 encode_write_maxsz + \
449 encode_getattr_maxsz)
450 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
451 decode_sequence_maxsz + \
452 decode_putfh_maxsz + \
453 decode_write_maxsz + \
454 decode_getattr_maxsz)
455 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
456 encode_sequence_maxsz + \
457 encode_putfh_maxsz + \
459 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
460 decode_sequence_maxsz + \
461 decode_putfh_maxsz + \
463 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
464 encode_sequence_maxsz + \
465 encode_putfh_maxsz + \
466 encode_open_maxsz + \
467 encode_access_maxsz + \
468 encode_getfh_maxsz + \
469 encode_getattr_maxsz)
470 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
471 decode_sequence_maxsz + \
472 decode_putfh_maxsz + \
473 decode_open_maxsz + \
474 decode_access_maxsz + \
475 decode_getfh_maxsz + \
476 decode_getattr_maxsz)
477 #define NFS4_enc_open_confirm_sz \
478 (compound_encode_hdr_maxsz + \
479 encode_putfh_maxsz + \
480 encode_open_confirm_maxsz)
481 #define NFS4_dec_open_confirm_sz \
482 (compound_decode_hdr_maxsz + \
483 decode_putfh_maxsz + \
484 decode_open_confirm_maxsz)
485 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
486 encode_sequence_maxsz + \
487 encode_putfh_maxsz + \
488 encode_open_maxsz + \
489 encode_access_maxsz + \
490 encode_getattr_maxsz)
491 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
492 decode_sequence_maxsz + \
493 decode_putfh_maxsz + \
494 decode_open_maxsz + \
495 decode_access_maxsz + \
496 decode_getattr_maxsz)
497 #define NFS4_enc_open_downgrade_sz \
498 (compound_encode_hdr_maxsz + \
499 encode_sequence_maxsz + \
500 encode_putfh_maxsz + \
501 encode_open_downgrade_maxsz + \
502 encode_getattr_maxsz)
503 #define NFS4_dec_open_downgrade_sz \
504 (compound_decode_hdr_maxsz + \
505 decode_sequence_maxsz + \
506 decode_putfh_maxsz + \
507 decode_open_downgrade_maxsz + \
508 decode_getattr_maxsz)
509 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
510 encode_sequence_maxsz + \
511 encode_putfh_maxsz + \
512 encode_close_maxsz + \
513 encode_getattr_maxsz)
514 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
515 decode_sequence_maxsz + \
516 decode_putfh_maxsz + \
517 decode_close_maxsz + \
518 decode_getattr_maxsz)
519 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
520 encode_sequence_maxsz + \
521 encode_putfh_maxsz + \
522 encode_setattr_maxsz + \
523 encode_getattr_maxsz)
524 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
525 decode_sequence_maxsz + \
526 decode_putfh_maxsz + \
527 decode_setattr_maxsz + \
528 decode_getattr_maxsz)
529 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
530 encode_sequence_maxsz + \
531 encode_putfh_maxsz + \
533 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
534 decode_sequence_maxsz + \
535 decode_putfh_maxsz + \
537 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
539 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
541 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
542 encode_setclientid_maxsz)
543 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
544 decode_setclientid_maxsz)
545 #define NFS4_enc_setclientid_confirm_sz \
546 (compound_encode_hdr_maxsz + \
547 encode_setclientid_confirm_maxsz)
548 #define NFS4_dec_setclientid_confirm_sz \
549 (compound_decode_hdr_maxsz + \
550 decode_setclientid_confirm_maxsz)
551 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
552 encode_sequence_maxsz + \
553 encode_putfh_maxsz + \
555 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
556 decode_sequence_maxsz + \
557 decode_putfh_maxsz + \
559 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
560 encode_sequence_maxsz + \
561 encode_putfh_maxsz + \
563 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
564 decode_sequence_maxsz + \
565 decode_putfh_maxsz + \
567 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
568 encode_sequence_maxsz + \
569 encode_putfh_maxsz + \
571 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
572 decode_sequence_maxsz + \
573 decode_putfh_maxsz + \
575 #define NFS4_enc_release_lockowner_sz \
576 (compound_encode_hdr_maxsz + \
577 encode_lockowner_maxsz)
578 #define NFS4_dec_release_lockowner_sz \
579 (compound_decode_hdr_maxsz + \
580 decode_lockowner_maxsz)
581 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
582 encode_sequence_maxsz + \
583 encode_putfh_maxsz + \
584 encode_access_maxsz + \
585 encode_getattr_maxsz)
586 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
587 decode_sequence_maxsz + \
588 decode_putfh_maxsz + \
589 decode_access_maxsz + \
590 decode_getattr_maxsz)
591 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
592 encode_sequence_maxsz + \
593 encode_putfh_maxsz + \
594 encode_getattr_maxsz)
595 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
596 decode_sequence_maxsz + \
597 decode_putfh_maxsz + \
598 decode_getattr_maxsz)
599 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
600 encode_sequence_maxsz + \
601 encode_putfh_maxsz + \
602 encode_lookup_maxsz + \
603 encode_getattr_maxsz + \
605 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
606 decode_sequence_maxsz + \
607 decode_putfh_maxsz + \
608 decode_lookup_maxsz + \
609 decode_getattr_maxsz + \
611 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
612 encode_sequence_maxsz + \
613 encode_putrootfh_maxsz + \
614 encode_getattr_maxsz + \
616 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
617 decode_sequence_maxsz + \
618 decode_putrootfh_maxsz + \
619 decode_getattr_maxsz + \
621 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
622 encode_sequence_maxsz + \
623 encode_putfh_maxsz + \
625 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
626 decode_sequence_maxsz + \
627 decode_putfh_maxsz + \
629 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
630 encode_sequence_maxsz + \
631 encode_putfh_maxsz + \
632 encode_savefh_maxsz + \
633 encode_putfh_maxsz + \
635 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
636 decode_sequence_maxsz + \
637 decode_putfh_maxsz + \
638 decode_savefh_maxsz + \
639 decode_putfh_maxsz + \
641 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
642 encode_sequence_maxsz + \
643 encode_putfh_maxsz + \
644 encode_savefh_maxsz + \
645 encode_putfh_maxsz + \
646 encode_link_maxsz + \
647 encode_restorefh_maxsz + \
648 encode_getattr_maxsz)
649 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
650 decode_sequence_maxsz + \
651 decode_putfh_maxsz + \
652 decode_savefh_maxsz + \
653 decode_putfh_maxsz + \
654 decode_link_maxsz + \
655 decode_restorefh_maxsz + \
656 decode_getattr_maxsz)
657 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
658 encode_sequence_maxsz + \
659 encode_putfh_maxsz + \
660 encode_symlink_maxsz + \
661 encode_getattr_maxsz + \
663 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
664 decode_sequence_maxsz + \
665 decode_putfh_maxsz + \
666 decode_symlink_maxsz + \
667 decode_getattr_maxsz + \
669 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
670 encode_sequence_maxsz + \
671 encode_putfh_maxsz + \
672 encode_create_maxsz + \
673 encode_getfh_maxsz + \
674 encode_getattr_maxsz)
675 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
676 decode_sequence_maxsz + \
677 decode_putfh_maxsz + \
678 decode_create_maxsz + \
679 decode_getfh_maxsz + \
680 decode_getattr_maxsz)
681 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
682 encode_sequence_maxsz + \
683 encode_putfh_maxsz + \
684 encode_getattr_maxsz)
685 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
686 decode_sequence_maxsz + \
687 decode_putfh_maxsz + \
688 decode_getattr_maxsz)
689 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
690 encode_sequence_maxsz + \
691 encode_putfh_maxsz + \
693 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
694 decode_sequence_maxsz + \
695 decode_putfh_maxsz + \
697 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
698 encode_sequence_maxsz + \
699 encode_putfh_maxsz + \
700 encode_getattr_maxsz)
701 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
702 decode_sequence_maxsz + \
703 decode_putfh_maxsz + \
704 decode_getattr_maxsz)
705 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
706 encode_sequence_maxsz + \
707 encode_putfh_maxsz + \
708 encode_delegreturn_maxsz + \
709 encode_getattr_maxsz)
710 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
711 decode_sequence_maxsz + \
712 decode_delegreturn_maxsz + \
713 decode_getattr_maxsz)
714 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
715 encode_sequence_maxsz + \
716 encode_putfh_maxsz + \
718 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
719 decode_sequence_maxsz + \
720 decode_putfh_maxsz + \
722 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
723 encode_sequence_maxsz + \
724 encode_putfh_maxsz + \
726 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
727 decode_sequence_maxsz + \
728 decode_putfh_maxsz + \
730 #define NFS4_enc_fs_locations_sz \
731 (compound_encode_hdr_maxsz + \
732 encode_sequence_maxsz + \
733 encode_putfh_maxsz + \
734 encode_lookup_maxsz + \
735 encode_fs_locations_maxsz)
736 #define NFS4_dec_fs_locations_sz \
737 (compound_decode_hdr_maxsz + \
738 decode_sequence_maxsz + \
739 decode_putfh_maxsz + \
740 decode_lookup_maxsz + \
741 decode_fs_locations_maxsz)
742 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
743 encode_sequence_maxsz + \
744 encode_putfh_maxsz + \
745 encode_secinfo_maxsz)
746 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
747 decode_sequence_maxsz + \
748 decode_putfh_maxsz + \
749 decode_secinfo_maxsz)
750 #if defined(CONFIG_NFS_V4_1)
751 #define NFS4_enc_bind_conn_to_session_sz \
752 (compound_encode_hdr_maxsz + \
753 encode_bind_conn_to_session_maxsz)
754 #define NFS4_dec_bind_conn_to_session_sz \
755 (compound_decode_hdr_maxsz + \
756 decode_bind_conn_to_session_maxsz)
757 #define NFS4_enc_exchange_id_sz \
758 (compound_encode_hdr_maxsz + \
759 encode_exchange_id_maxsz)
760 #define NFS4_dec_exchange_id_sz \
761 (compound_decode_hdr_maxsz + \
762 decode_exchange_id_maxsz)
763 #define NFS4_enc_create_session_sz \
764 (compound_encode_hdr_maxsz + \
765 encode_create_session_maxsz)
766 #define NFS4_dec_create_session_sz \
767 (compound_decode_hdr_maxsz + \
768 decode_create_session_maxsz)
769 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
770 encode_destroy_session_maxsz)
771 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
772 decode_destroy_session_maxsz)
773 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
774 encode_destroy_clientid_maxsz)
775 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
776 decode_destroy_clientid_maxsz)
777 #define NFS4_enc_sequence_sz \
778 (compound_decode_hdr_maxsz + \
779 encode_sequence_maxsz)
780 #define NFS4_dec_sequence_sz \
781 (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz)
783 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
784 encode_sequence_maxsz + \
785 encode_putrootfh_maxsz + \
787 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
788 decode_sequence_maxsz + \
789 decode_putrootfh_maxsz + \
791 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
792 encode_sequence_maxsz + \
793 encode_reclaim_complete_maxsz)
794 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
795 decode_sequence_maxsz + \
796 decode_reclaim_complete_maxsz)
797 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
798 encode_sequence_maxsz + \
799 encode_putfh_maxsz + \
800 encode_getdevicelist_maxsz)
801 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
802 decode_sequence_maxsz + \
803 decode_putfh_maxsz + \
804 decode_getdevicelist_maxsz)
805 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
806 encode_sequence_maxsz +\
807 encode_getdeviceinfo_maxsz)
808 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
809 decode_sequence_maxsz + \
810 decode_getdeviceinfo_maxsz)
811 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
812 encode_sequence_maxsz + \
813 encode_putfh_maxsz + \
814 encode_layoutget_maxsz)
815 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
816 decode_sequence_maxsz + \
817 decode_putfh_maxsz + \
818 decode_layoutget_maxsz)
819 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
820 encode_sequence_maxsz +\
821 encode_putfh_maxsz + \
822 encode_layoutcommit_maxsz + \
823 encode_getattr_maxsz)
824 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putfh_maxsz + \
827 decode_layoutcommit_maxsz + \
828 decode_getattr_maxsz)
829 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
830 encode_sequence_maxsz + \
831 encode_putfh_maxsz + \
832 encode_layoutreturn_maxsz)
833 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
834 decode_sequence_maxsz + \
835 decode_putfh_maxsz + \
836 decode_layoutreturn_maxsz)
837 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
838 encode_sequence_maxsz + \
839 encode_putrootfh_maxsz +\
840 encode_secinfo_no_name_maxsz)
841 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
842 decode_sequence_maxsz + \
843 decode_putrootfh_maxsz + \
844 decode_secinfo_no_name_maxsz)
845 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
846 encode_sequence_maxsz + \
847 encode_test_stateid_maxsz)
848 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
849 decode_sequence_maxsz + \
850 decode_test_stateid_maxsz)
851 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
852 encode_sequence_maxsz + \
853 encode_free_stateid_maxsz)
854 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
855 decode_sequence_maxsz + \
856 decode_free_stateid_maxsz)
858 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
859 compound_encode_hdr_maxsz +
860 encode_sequence_maxsz +
862 encode_getattr_maxsz) *
865 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
866 compound_decode_hdr_maxsz +
867 decode_sequence_maxsz +
868 decode_putfh_maxsz) *
870 #endif /* CONFIG_NFS_V4_1 */
872 static const umode_t nfs_type2fmt[] = {
879 [NF4SOCK] = S_IFSOCK,
885 struct compound_hdr {
891 uint32_t replen; /* expected reply words */
895 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
897 __be32 *p = xdr_reserve_space(xdr, nbytes);
902 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
906 p = xdr_reserve_space(xdr, len);
907 xdr_encode_opaque_fixed(p, buf, len);
910 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
914 p = reserve_space(xdr, 4 + len);
915 xdr_encode_opaque(p, str, len);
918 static void encode_uint32(struct xdr_stream *xdr, u32 n)
922 p = reserve_space(xdr, 4);
926 static void encode_uint64(struct xdr_stream *xdr, u64 n)
930 p = reserve_space(xdr, 8);
931 xdr_encode_hyper(p, n);
934 static void encode_nfs4_seqid(struct xdr_stream *xdr,
935 const struct nfs_seqid *seqid)
937 encode_uint32(xdr, seqid->sequence->counter);
940 static void encode_compound_hdr(struct xdr_stream *xdr,
941 struct rpc_rqst *req,
942 struct compound_hdr *hdr)
945 struct rpc_auth *auth = req->rq_cred->cr_auth;
947 /* initialize running count of expected bytes in reply.
948 * NOTE: the replied tag SHOULD be the same is the one sent,
949 * but this is not required as a MUST for the server to do so. */
950 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
952 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
953 encode_string(xdr, hdr->taglen, hdr->tag);
954 p = reserve_space(xdr, 8);
955 *p++ = cpu_to_be32(hdr->minorversion);
957 *p = cpu_to_be32(hdr->nops);
960 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
962 struct compound_hdr *hdr)
964 encode_uint32(xdr, op);
966 hdr->replen += replen;
969 static void encode_nops(struct compound_hdr *hdr)
971 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
972 *hdr->nops_p = htonl(hdr->nops);
975 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
977 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
980 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
982 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
985 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
986 const struct nfs4_label *label,
987 const struct nfs_server *server)
989 char owner_name[IDMAP_NAMESZ];
990 char owner_group[IDMAP_NAMESZ];
991 int owner_namelen = 0;
992 int owner_grouplen = 0;
1001 * We reserve enough space to write the entire attribute buffer at once.
1002 * In the worst-case, this would be
1003 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
1004 * = 40 bytes, plus any contribution from variable-length fields
1005 * such as owner/group.
1010 if (iap->ia_valid & ATTR_SIZE)
1012 if (iap->ia_valid & ATTR_MODE)
1014 if (iap->ia_valid & ATTR_UID) {
1015 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
1016 if (owner_namelen < 0) {
1017 dprintk("nfs: couldn't resolve uid %d to string\n",
1018 from_kuid(&init_user_ns, iap->ia_uid));
1020 strcpy(owner_name, "nobody");
1021 owner_namelen = sizeof("nobody") - 1;
1024 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1026 if (iap->ia_valid & ATTR_GID) {
1027 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
1028 if (owner_grouplen < 0) {
1029 dprintk("nfs: couldn't resolve gid %d to string\n",
1030 from_kgid(&init_user_ns, iap->ia_gid));
1031 strcpy(owner_group, "nobody");
1032 owner_grouplen = sizeof("nobody") - 1;
1035 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1038 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1039 if (iap->ia_valid & ATTR_ATIME_SET)
1041 else if (iap->ia_valid & ATTR_ATIME)
1043 if (iap->ia_valid & ATTR_MTIME_SET)
1045 else if (iap->ia_valid & ATTR_MTIME)
1047 p = reserve_space(xdr, len);
1050 * We write the bitmap length now, but leave the bitmap and the attribute
1051 * buffer length to be backfilled at the end of this routine.
1053 *p++ = cpu_to_be32(3);
1057 if (iap->ia_valid & ATTR_SIZE) {
1058 bmval0 |= FATTR4_WORD0_SIZE;
1059 p = xdr_encode_hyper(p, iap->ia_size);
1061 if (iap->ia_valid & ATTR_MODE) {
1062 bmval1 |= FATTR4_WORD1_MODE;
1063 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1065 if (iap->ia_valid & ATTR_UID) {
1066 bmval1 |= FATTR4_WORD1_OWNER;
1067 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1069 if (iap->ia_valid & ATTR_GID) {
1070 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
1071 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1073 if (iap->ia_valid & ATTR_ATIME_SET) {
1074 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1075 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1076 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1077 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1079 else if (iap->ia_valid & ATTR_ATIME) {
1080 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
1081 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1083 if (iap->ia_valid & ATTR_MTIME_SET) {
1084 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1085 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1086 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1087 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1089 else if (iap->ia_valid & ATTR_MTIME) {
1090 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
1091 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1094 bmval2 |= FATTR4_WORD2_SECURITY_LABEL;
1095 *p++ = cpu_to_be32(label->lfs);
1096 *p++ = cpu_to_be32(label->pi);
1097 *p++ = cpu_to_be32(label->len);
1098 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1102 * Now we backfill the bitmap and the attribute buffer length.
1104 if (len != ((char *)p - (char *)q) + 4) {
1105 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
1106 len, ((char *)p - (char *)q) + 4);
1109 len = (char *)p - (char *)q - 16;
1110 *q++ = htonl(bmval0);
1111 *q++ = htonl(bmval1);
1112 *q++ = htonl(bmval2);
1118 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
1120 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1121 encode_uint32(xdr, access);
1124 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1126 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1127 encode_nfs4_seqid(xdr, arg->seqid);
1128 encode_nfs4_stateid(xdr, arg->stateid);
1131 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
1135 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1136 p = reserve_space(xdr, 12);
1137 p = xdr_encode_hyper(p, args->offset);
1138 *p = cpu_to_be32(args->count);
1141 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
1145 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1146 encode_uint32(xdr, create->ftype);
1148 switch (create->ftype) {
1150 p = reserve_space(xdr, 4);
1151 *p = cpu_to_be32(create->u.symlink.len);
1152 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1155 case NF4BLK: case NF4CHR:
1156 p = reserve_space(xdr, 8);
1157 *p++ = cpu_to_be32(create->u.device.specdata1);
1158 *p = cpu_to_be32(create->u.device.specdata2);
1165 encode_string(xdr, create->name->len, create->name->name);
1166 encode_attrs(xdr, create->attrs, create->label, create->server);
1169 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
1173 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1174 p = reserve_space(xdr, 8);
1175 *p++ = cpu_to_be32(1);
1176 *p = cpu_to_be32(bitmap);
1179 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
1183 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1184 p = reserve_space(xdr, 12);
1185 *p++ = cpu_to_be32(2);
1186 *p++ = cpu_to_be32(bm0);
1187 *p = cpu_to_be32(bm1);
1191 encode_getattr_three(struct xdr_stream *xdr,
1192 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1193 struct compound_hdr *hdr)
1197 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1199 p = reserve_space(xdr, 16);
1200 *p++ = cpu_to_be32(3);
1201 *p++ = cpu_to_be32(bm0);
1202 *p++ = cpu_to_be32(bm1);
1203 *p = cpu_to_be32(bm2);
1205 p = reserve_space(xdr, 12);
1206 *p++ = cpu_to_be32(2);
1207 *p++ = cpu_to_be32(bm0);
1208 *p = cpu_to_be32(bm1);
1210 p = reserve_space(xdr, 8);
1211 *p++ = cpu_to_be32(1);
1212 *p = cpu_to_be32(bm0);
1216 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1218 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1219 bitmask[1] & nfs4_fattr_bitmap[1],
1220 bitmask[2] & nfs4_fattr_bitmap[2],
1224 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1225 const u32 *open_bitmap,
1226 struct compound_hdr *hdr)
1228 encode_getattr_three(xdr,
1229 bitmask[0] & open_bitmap[0],
1230 bitmask[1] & open_bitmap[1],
1231 bitmask[2] & open_bitmap[2],
1235 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1237 encode_getattr_three(xdr,
1238 bitmask[0] & nfs4_fsinfo_bitmap[0],
1239 bitmask[1] & nfs4_fsinfo_bitmap[1],
1240 bitmask[2] & nfs4_fsinfo_bitmap[2],
1244 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1246 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1247 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1250 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1252 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
1255 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1257 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1258 encode_string(xdr, name->len, name->name);
1261 static inline int nfs4_lock_type(struct file_lock *fl, int block)
1263 if (fl->fl_type == F_RDLCK)
1264 return block ? NFS4_READW_LT : NFS4_READ_LT;
1265 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1268 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1270 if (fl->fl_end == OFFSET_MAX)
1271 return ~(uint64_t)0;
1272 return fl->fl_end - fl->fl_start + 1;
1275 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1279 p = reserve_space(xdr, 32);
1280 p = xdr_encode_hyper(p, lowner->clientid);
1281 *p++ = cpu_to_be32(20);
1282 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1283 *p++ = cpu_to_be32(lowner->s_dev);
1284 xdr_encode_hyper(p, lowner->id);
1288 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1289 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1291 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
1295 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1296 p = reserve_space(xdr, 28);
1297 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1298 *p++ = cpu_to_be32(args->reclaim);
1299 p = xdr_encode_hyper(p, args->fl->fl_start);
1300 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1301 *p = cpu_to_be32(args->new_lock_owner);
1302 if (args->new_lock_owner){
1303 encode_nfs4_seqid(xdr, args->open_seqid);
1304 encode_nfs4_stateid(xdr, args->open_stateid);
1305 encode_nfs4_seqid(xdr, args->lock_seqid);
1306 encode_lockowner(xdr, &args->lock_owner);
1309 encode_nfs4_stateid(xdr, args->lock_stateid);
1310 encode_nfs4_seqid(xdr, args->lock_seqid);
1314 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
1318 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1319 p = reserve_space(xdr, 20);
1320 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1321 p = xdr_encode_hyper(p, args->fl->fl_start);
1322 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1323 encode_lockowner(xdr, &args->lock_owner);
1326 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
1330 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1331 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1332 encode_nfs4_seqid(xdr, args->seqid);
1333 encode_nfs4_stateid(xdr, args->stateid);
1334 p = reserve_space(xdr, 16);
1335 p = xdr_encode_hyper(p, args->fl->fl_start);
1336 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1339 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1341 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1342 encode_lockowner(xdr, lowner);
1345 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1347 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1348 encode_string(xdr, name->len, name->name);
1351 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
1355 p = reserve_space(xdr, 8);
1356 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1358 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
1361 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
1363 case FMODE_READ|FMODE_WRITE:
1364 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
1367 *p++ = cpu_to_be32(0);
1369 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
1372 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1376 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1379 encode_nfs4_seqid(xdr, arg->seqid);
1380 encode_share_access(xdr, arg->fmode);
1381 p = reserve_space(xdr, 36);
1382 p = xdr_encode_hyper(p, arg->clientid);
1383 *p++ = cpu_to_be32(24);
1384 p = xdr_encode_opaque_fixed(p, "open id:", 8);
1385 *p++ = cpu_to_be32(arg->server->s_dev);
1386 *p++ = cpu_to_be32(arg->id.uniquifier);
1387 xdr_encode_hyper(p, arg->id.create_time);
1390 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1395 p = reserve_space(xdr, 4);
1396 switch(arg->createmode) {
1397 case NFS4_CREATE_UNCHECKED:
1398 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1399 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1401 case NFS4_CREATE_GUARDED:
1402 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1403 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1405 case NFS4_CREATE_EXCLUSIVE:
1406 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1407 encode_nfs4_verifier(xdr, &arg->u.verifier);
1409 case NFS4_CREATE_EXCLUSIVE4_1:
1410 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1411 encode_nfs4_verifier(xdr, &arg->u.verifier);
1413 encode_attrs(xdr, &dummy, arg->label, arg->server);
1417 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1421 p = reserve_space(xdr, 4);
1422 switch (arg->open_flags & O_CREAT) {
1424 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
1427 *p = cpu_to_be32(NFS4_OPEN_CREATE);
1428 encode_createmode(xdr, arg);
1432 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1436 p = reserve_space(xdr, 4);
1437 switch (delegation_type) {
1439 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
1442 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
1444 case FMODE_WRITE|FMODE_READ:
1445 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
1452 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1456 p = reserve_space(xdr, 4);
1457 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
1458 encode_string(xdr, name->len, name->name);
1461 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1465 p = reserve_space(xdr, 4);
1466 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
1467 encode_delegation_type(xdr, type);
1470 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1474 p = reserve_space(xdr, 4);
1475 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1476 encode_nfs4_stateid(xdr, stateid);
1477 encode_string(xdr, name->len, name->name);
1480 static inline void encode_claim_fh(struct xdr_stream *xdr)
1484 p = reserve_space(xdr, 4);
1485 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1488 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1492 p = reserve_space(xdr, 4);
1493 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1494 encode_nfs4_stateid(xdr, stateid);
1497 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1499 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
1500 encode_openhdr(xdr, arg);
1501 encode_opentype(xdr, arg);
1502 switch (arg->claim) {
1503 case NFS4_OPEN_CLAIM_NULL:
1504 encode_claim_null(xdr, arg->name);
1506 case NFS4_OPEN_CLAIM_PREVIOUS:
1507 encode_claim_previous(xdr, arg->u.delegation_type);
1509 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1510 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1512 case NFS4_OPEN_CLAIM_FH:
1513 encode_claim_fh(xdr);
1515 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1516 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1523 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1525 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1526 encode_nfs4_stateid(xdr, arg->stateid);
1527 encode_nfs4_seqid(xdr, arg->seqid);
1530 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1532 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1533 encode_nfs4_stateid(xdr, arg->stateid);
1534 encode_nfs4_seqid(xdr, arg->seqid);
1535 encode_share_access(xdr, arg->fmode);
1539 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1541 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1542 encode_string(xdr, fh->size, fh->data);
1545 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1547 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
1550 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1554 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1555 encode_nfs4_stateid(xdr, &args->stateid);
1557 p = reserve_space(xdr, 12);
1558 p = xdr_encode_hyper(p, args->offset);
1559 *p = cpu_to_be32(args->count);
1562 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1564 uint32_t attrs[3] = {
1565 FATTR4_WORD0_RDATTR_ERROR,
1566 FATTR4_WORD1_MOUNTED_ON_FILEID,
1568 uint32_t dircount = readdir->count >> 1;
1571 if (readdir->plus) {
1572 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1573 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
1574 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1575 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1576 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1577 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1580 /* Use mounted_on_fileid only if the server supports it */
1581 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1582 attrs[0] |= FATTR4_WORD0_FILEID;
1584 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1585 encode_uint64(xdr, readdir->cookie);
1586 encode_nfs4_verifier(xdr, &readdir->verifier);
1587 p = reserve_space(xdr, encode_readdir_space);
1588 *p++ = cpu_to_be32(dircount);
1589 *p++ = cpu_to_be32(readdir->count);
1590 *p++ = cpu_to_be32(encode_readdir_bitmask_sz);
1591 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
1592 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
1593 if (encode_readdir_bitmask_sz > 2) {
1594 if (hdr->minorversion > 1)
1595 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1596 p++, *p++ = cpu_to_be32(attrs[2] & readdir->bitmask[2]);
1598 memcpy(verf, readdir->verifier.data, sizeof(verf));
1600 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1602 (unsigned long long)readdir->cookie,
1604 attrs[0] & readdir->bitmask[0],
1605 attrs[1] & readdir->bitmask[1],
1606 attrs[2] & readdir->bitmask[2]);
1609 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1611 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
1614 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1616 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1617 encode_string(xdr, name->len, name->name);
1620 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1622 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1623 encode_string(xdr, oldname->len, oldname->name);
1624 encode_string(xdr, newname->len, newname->name);
1627 static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1628 struct compound_hdr *hdr)
1630 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1631 encode_uint64(xdr, clid);
1635 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1637 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1641 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1645 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1646 encode_nfs4_stateid(xdr, &zero_stateid);
1647 p = reserve_space(xdr, 2*4);
1648 *p++ = cpu_to_be32(1);
1649 *p = cpu_to_be32(FATTR4_WORD0_ACL);
1650 p = reserve_space(xdr, 4);
1651 *p = cpu_to_be32(arg->acl_len);
1652 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1656 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1658 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
1661 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1663 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1664 encode_nfs4_stateid(xdr, &arg->stateid);
1665 encode_attrs(xdr, arg->iap, arg->label, server);
1668 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1672 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1673 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
1675 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1676 p = reserve_space(xdr, 4);
1677 *p = cpu_to_be32(setclientid->sc_prog);
1678 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1679 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1680 p = reserve_space(xdr, 4);
1681 *p = cpu_to_be32(setclientid->sc_cb_ident);
1684 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
1686 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1687 decode_setclientid_confirm_maxsz, hdr);
1688 encode_uint64(xdr, arg->clientid);
1689 encode_nfs4_verifier(xdr, &arg->confirm);
1692 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1696 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1697 encode_nfs4_stateid(xdr, &args->stateid);
1699 p = reserve_space(xdr, 16);
1700 p = xdr_encode_hyper(p, args->offset);
1701 *p++ = cpu_to_be32(args->stable);
1702 *p = cpu_to_be32(args->count);
1704 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1707 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1709 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1710 encode_nfs4_stateid(xdr, stateid);
1713 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1715 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1716 encode_string(xdr, name->len, name->name);
1719 #if defined(CONFIG_NFS_V4_1)
1720 /* NFSv4.1 operations */
1721 static void encode_bind_conn_to_session(struct xdr_stream *xdr,
1722 struct nfs4_session *session,
1723 struct compound_hdr *hdr)
1727 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1728 decode_bind_conn_to_session_maxsz, hdr);
1729 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1730 p = xdr_reserve_space(xdr, 8);
1731 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
1732 *p = 0; /* use_conn_in_rdma_mode = False */
1735 static void encode_exchange_id(struct xdr_stream *xdr,
1736 struct nfs41_exchange_id_args *args,
1737 struct compound_hdr *hdr)
1740 char impl_name[IMPL_NAME_LIMIT];
1743 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1744 encode_nfs4_verifier(xdr, args->verifier);
1746 encode_string(xdr, args->id_len, args->id);
1748 p = reserve_space(xdr, 12);
1749 *p++ = cpu_to_be32(args->flags);
1750 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
1752 if (send_implementation_id &&
1753 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1754 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1755 <= sizeof(impl_name) + 1)
1756 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1757 utsname()->sysname, utsname()->release,
1758 utsname()->version, utsname()->machine);
1761 *p = cpu_to_be32(1); /* implementation id array length=1 */
1764 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1765 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1766 encode_string(xdr, len, impl_name);
1767 /* just send zeros for nii_date - the date is in nii_name */
1768 p = reserve_space(xdr, 12);
1769 p = xdr_encode_hyper(p, 0);
1770 *p = cpu_to_be32(0);
1772 *p = cpu_to_be32(0); /* implementation id array length=0 */
1775 static void encode_create_session(struct xdr_stream *xdr,
1776 struct nfs41_create_session_args *args,
1777 struct compound_hdr *hdr)
1780 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1782 struct nfs_client *clp = args->client;
1783 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1784 u32 max_resp_sz_cached;
1787 * Assumes OPEN is the biggest non-idempotent compound.
1788 * 2 is the verifier.
1790 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1791 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
1793 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1796 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1797 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1798 p = xdr_encode_hyper(p, clp->cl_clientid);
1799 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1800 *p++ = cpu_to_be32(args->flags); /*flags */
1803 *p++ = cpu_to_be32(0); /* header padding size */
1804 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1805 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
1806 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
1807 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1808 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1809 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1812 *p++ = cpu_to_be32(0); /* header padding size */
1813 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1814 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1815 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1816 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1817 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1818 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
1820 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
1821 *p++ = cpu_to_be32(1);
1822 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
1824 /* authsys_parms rfc1831 */
1825 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */
1826 p = xdr_encode_opaque(p, machine_name, len);
1827 *p++ = cpu_to_be32(0); /* UID */
1828 *p++ = cpu_to_be32(0); /* GID */
1829 *p = cpu_to_be32(0); /* No more gids */
1832 static void encode_destroy_session(struct xdr_stream *xdr,
1833 struct nfs4_session *session,
1834 struct compound_hdr *hdr)
1836 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1837 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1840 static void encode_destroy_clientid(struct xdr_stream *xdr,
1842 struct compound_hdr *hdr)
1844 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1845 encode_uint64(xdr, clientid);
1848 static void encode_reclaim_complete(struct xdr_stream *xdr,
1849 struct nfs41_reclaim_complete_args *args,
1850 struct compound_hdr *hdr)
1852 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1853 encode_uint32(xdr, args->one_fs);
1855 #endif /* CONFIG_NFS_V4_1 */
1857 static void encode_sequence(struct xdr_stream *xdr,
1858 const struct nfs4_sequence_args *args,
1859 struct compound_hdr *hdr)
1861 #if defined(CONFIG_NFS_V4_1)
1862 struct nfs4_session *session;
1863 struct nfs4_slot_table *tp;
1864 struct nfs4_slot *slot = args->sa_slot;
1871 session = tp->session;
1873 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
1876 * Sessionid + seqid + slotid + max slotid + cache_this
1878 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1879 "max_slotid=%d cache_this=%d\n",
1881 ((u32 *)session->sess_id.data)[0],
1882 ((u32 *)session->sess_id.data)[1],
1883 ((u32 *)session->sess_id.data)[2],
1884 ((u32 *)session->sess_id.data)[3],
1885 slot->seq_nr, slot->slot_nr,
1886 tp->highest_used_slotid, args->sa_cache_this);
1887 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
1888 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
1889 *p++ = cpu_to_be32(slot->seq_nr);
1890 *p++ = cpu_to_be32(slot->slot_nr);
1891 *p++ = cpu_to_be32(tp->highest_used_slotid);
1892 *p = cpu_to_be32(args->sa_cache_this);
1893 #endif /* CONFIG_NFS_V4_1 */
1896 #ifdef CONFIG_NFS_V4_1
1898 encode_getdevicelist(struct xdr_stream *xdr,
1899 const struct nfs4_getdevicelist_args *args,
1900 struct compound_hdr *hdr)
1903 nfs4_verifier dummy = {
1907 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1908 p = reserve_space(xdr, 16);
1909 *p++ = cpu_to_be32(args->layoutclass);
1910 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1911 xdr_encode_hyper(p, 0ULL); /* cookie */
1912 encode_nfs4_verifier(xdr, &dummy);
1916 encode_getdeviceinfo(struct xdr_stream *xdr,
1917 const struct nfs4_getdeviceinfo_args *args,
1918 struct compound_hdr *hdr)
1922 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1923 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1924 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1925 NFS4_DEVICEID4_SIZE);
1926 *p++ = cpu_to_be32(args->pdev->layout_type);
1927 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1928 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1932 encode_layoutget(struct xdr_stream *xdr,
1933 const struct nfs4_layoutget_args *args,
1934 struct compound_hdr *hdr)
1938 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1939 p = reserve_space(xdr, 36);
1940 *p++ = cpu_to_be32(0); /* Signal layout available */
1941 *p++ = cpu_to_be32(args->type);
1942 *p++ = cpu_to_be32(args->range.iomode);
1943 p = xdr_encode_hyper(p, args->range.offset);
1944 p = xdr_encode_hyper(p, args->range.length);
1945 p = xdr_encode_hyper(p, args->minlength);
1946 encode_nfs4_stateid(xdr, &args->stateid);
1947 encode_uint32(xdr, args->maxcount);
1949 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1953 (unsigned long)args->range.offset,
1954 (unsigned long)args->range.length,
1959 encode_layoutcommit(struct xdr_stream *xdr,
1960 struct inode *inode,
1961 const struct nfs4_layoutcommit_args *args,
1962 struct compound_hdr *hdr)
1966 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1967 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1969 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1970 p = reserve_space(xdr, 20);
1971 /* Only whole file layouts */
1972 p = xdr_encode_hyper(p, 0); /* offset */
1973 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
1974 *p = cpu_to_be32(0); /* reclaim */
1975 encode_nfs4_stateid(xdr, &args->stateid);
1976 p = reserve_space(xdr, 20);
1977 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1978 p = xdr_encode_hyper(p, args->lastbytewritten);
1979 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1980 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
1982 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1983 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1984 NFS_I(inode)->layout, xdr, args);
1986 encode_uint32(xdr, 0); /* no layout-type payload */
1992 encode_layoutreturn(struct xdr_stream *xdr,
1993 const struct nfs4_layoutreturn_args *args,
1994 struct compound_hdr *hdr)
1998 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1999 p = reserve_space(xdr, 16);
2000 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2001 *p++ = cpu_to_be32(args->layout_type);
2002 *p++ = cpu_to_be32(IOMODE_ANY);
2003 *p = cpu_to_be32(RETURN_FILE);
2004 p = reserve_space(xdr, 16);
2005 p = xdr_encode_hyper(p, 0);
2006 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
2007 spin_lock(&args->inode->i_lock);
2008 encode_nfs4_stateid(xdr, &args->stateid);
2009 spin_unlock(&args->inode->i_lock);
2010 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2011 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2012 NFS_I(args->inode)->layout, xdr, args);
2014 encode_uint32(xdr, 0);
2018 encode_secinfo_no_name(struct xdr_stream *xdr,
2019 const struct nfs41_secinfo_no_name_args *args,
2020 struct compound_hdr *hdr)
2022 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2023 encode_uint32(xdr, args->style);
2027 static void encode_test_stateid(struct xdr_stream *xdr,
2028 struct nfs41_test_stateid_args *args,
2029 struct compound_hdr *hdr)
2031 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2032 encode_uint32(xdr, 1);
2033 encode_nfs4_stateid(xdr, args->stateid);
2036 static void encode_free_stateid(struct xdr_stream *xdr,
2037 struct nfs41_free_stateid_args *args,
2038 struct compound_hdr *hdr)
2040 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2041 encode_nfs4_stateid(xdr, &args->stateid);
2043 #endif /* CONFIG_NFS_V4_1 */
2046 * END OF "GENERIC" ENCODE ROUTINES.
2049 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2051 #if defined(CONFIG_NFS_V4_1)
2054 return args->sa_slot->table->session->clp->cl_mvops->minor_version;
2055 #endif /* CONFIG_NFS_V4_1 */
2060 * Encode an ACCESS request
2062 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2063 const struct nfs4_accessargs *args)
2065 struct compound_hdr hdr = {
2066 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2069 encode_compound_hdr(xdr, req, &hdr);
2070 encode_sequence(xdr, &args->seq_args, &hdr);
2071 encode_putfh(xdr, args->fh, &hdr);
2072 encode_access(xdr, args->access, &hdr);
2073 encode_getfattr(xdr, args->bitmask, &hdr);
2078 * Encode LOOKUP request
2080 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2081 const struct nfs4_lookup_arg *args)
2083 struct compound_hdr hdr = {
2084 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2087 encode_compound_hdr(xdr, req, &hdr);
2088 encode_sequence(xdr, &args->seq_args, &hdr);
2089 encode_putfh(xdr, args->dir_fh, &hdr);
2090 encode_lookup(xdr, args->name, &hdr);
2091 encode_getfh(xdr, &hdr);
2092 encode_getfattr(xdr, args->bitmask, &hdr);
2097 * Encode LOOKUP_ROOT request
2099 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2100 struct xdr_stream *xdr,
2101 const struct nfs4_lookup_root_arg *args)
2103 struct compound_hdr hdr = {
2104 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2107 encode_compound_hdr(xdr, req, &hdr);
2108 encode_sequence(xdr, &args->seq_args, &hdr);
2109 encode_putrootfh(xdr, &hdr);
2110 encode_getfh(xdr, &hdr);
2111 encode_getfattr(xdr, args->bitmask, &hdr);
2116 * Encode REMOVE request
2118 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2119 const struct nfs_removeargs *args)
2121 struct compound_hdr hdr = {
2122 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2125 encode_compound_hdr(xdr, req, &hdr);
2126 encode_sequence(xdr, &args->seq_args, &hdr);
2127 encode_putfh(xdr, args->fh, &hdr);
2128 encode_remove(xdr, &args->name, &hdr);
2133 * Encode RENAME request
2135 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2136 const struct nfs_renameargs *args)
2138 struct compound_hdr hdr = {
2139 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2142 encode_compound_hdr(xdr, req, &hdr);
2143 encode_sequence(xdr, &args->seq_args, &hdr);
2144 encode_putfh(xdr, args->old_dir, &hdr);
2145 encode_savefh(xdr, &hdr);
2146 encode_putfh(xdr, args->new_dir, &hdr);
2147 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2152 * Encode LINK request
2154 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2155 const struct nfs4_link_arg *args)
2157 struct compound_hdr hdr = {
2158 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2161 encode_compound_hdr(xdr, req, &hdr);
2162 encode_sequence(xdr, &args->seq_args, &hdr);
2163 encode_putfh(xdr, args->fh, &hdr);
2164 encode_savefh(xdr, &hdr);
2165 encode_putfh(xdr, args->dir_fh, &hdr);
2166 encode_link(xdr, args->name, &hdr);
2167 encode_restorefh(xdr, &hdr);
2168 encode_getfattr(xdr, args->bitmask, &hdr);
2173 * Encode CREATE request
2175 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2176 const struct nfs4_create_arg *args)
2178 struct compound_hdr hdr = {
2179 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2182 encode_compound_hdr(xdr, req, &hdr);
2183 encode_sequence(xdr, &args->seq_args, &hdr);
2184 encode_putfh(xdr, args->dir_fh, &hdr);
2185 encode_create(xdr, args, &hdr);
2186 encode_getfh(xdr, &hdr);
2187 encode_getfattr(xdr, args->bitmask, &hdr);
2192 * Encode SYMLINK request
2194 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2195 const struct nfs4_create_arg *args)
2197 nfs4_xdr_enc_create(req, xdr, args);
2201 * Encode GETATTR request
2203 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2204 const struct nfs4_getattr_arg *args)
2206 struct compound_hdr hdr = {
2207 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2210 encode_compound_hdr(xdr, req, &hdr);
2211 encode_sequence(xdr, &args->seq_args, &hdr);
2212 encode_putfh(xdr, args->fh, &hdr);
2213 encode_getfattr(xdr, args->bitmask, &hdr);
2218 * Encode a CLOSE request
2220 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2221 struct nfs_closeargs *args)
2223 struct compound_hdr hdr = {
2224 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2227 encode_compound_hdr(xdr, req, &hdr);
2228 encode_sequence(xdr, &args->seq_args, &hdr);
2229 encode_putfh(xdr, args->fh, &hdr);
2230 encode_close(xdr, args, &hdr);
2231 encode_getfattr(xdr, args->bitmask, &hdr);
2236 * Encode an OPEN request
2238 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2239 struct nfs_openargs *args)
2241 struct compound_hdr hdr = {
2242 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2245 encode_compound_hdr(xdr, req, &hdr);
2246 encode_sequence(xdr, &args->seq_args, &hdr);
2247 encode_putfh(xdr, args->fh, &hdr);
2248 encode_open(xdr, args, &hdr);
2249 encode_getfh(xdr, &hdr);
2251 encode_access(xdr, args->access, &hdr);
2252 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2257 * Encode an OPEN_CONFIRM request
2259 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2260 struct xdr_stream *xdr,
2261 struct nfs_open_confirmargs *args)
2263 struct compound_hdr hdr = {
2267 encode_compound_hdr(xdr, req, &hdr);
2268 encode_putfh(xdr, args->fh, &hdr);
2269 encode_open_confirm(xdr, args, &hdr);
2274 * Encode an OPEN request with no attributes.
2276 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2277 struct xdr_stream *xdr,
2278 struct nfs_openargs *args)
2280 struct compound_hdr hdr = {
2281 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2284 encode_compound_hdr(xdr, req, &hdr);
2285 encode_sequence(xdr, &args->seq_args, &hdr);
2286 encode_putfh(xdr, args->fh, &hdr);
2287 encode_open(xdr, args, &hdr);
2289 encode_access(xdr, args->access, &hdr);
2290 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2295 * Encode an OPEN_DOWNGRADE request
2297 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2298 struct xdr_stream *xdr,
2299 struct nfs_closeargs *args)
2301 struct compound_hdr hdr = {
2302 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2305 encode_compound_hdr(xdr, req, &hdr);
2306 encode_sequence(xdr, &args->seq_args, &hdr);
2307 encode_putfh(xdr, args->fh, &hdr);
2308 encode_open_downgrade(xdr, args, &hdr);
2309 encode_getfattr(xdr, args->bitmask, &hdr);
2314 * Encode a LOCK request
2316 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2317 struct nfs_lock_args *args)
2319 struct compound_hdr hdr = {
2320 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2323 encode_compound_hdr(xdr, req, &hdr);
2324 encode_sequence(xdr, &args->seq_args, &hdr);
2325 encode_putfh(xdr, args->fh, &hdr);
2326 encode_lock(xdr, args, &hdr);
2331 * Encode a LOCKT request
2333 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2334 struct nfs_lockt_args *args)
2336 struct compound_hdr hdr = {
2337 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2340 encode_compound_hdr(xdr, req, &hdr);
2341 encode_sequence(xdr, &args->seq_args, &hdr);
2342 encode_putfh(xdr, args->fh, &hdr);
2343 encode_lockt(xdr, args, &hdr);
2348 * Encode a LOCKU request
2350 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2351 struct nfs_locku_args *args)
2353 struct compound_hdr hdr = {
2354 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2357 encode_compound_hdr(xdr, req, &hdr);
2358 encode_sequence(xdr, &args->seq_args, &hdr);
2359 encode_putfh(xdr, args->fh, &hdr);
2360 encode_locku(xdr, args, &hdr);
2364 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2365 struct xdr_stream *xdr,
2366 struct nfs_release_lockowner_args *args)
2368 struct compound_hdr hdr = {
2372 encode_compound_hdr(xdr, req, &hdr);
2373 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2378 * Encode a READLINK request
2380 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2381 const struct nfs4_readlink *args)
2383 struct compound_hdr hdr = {
2384 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2387 encode_compound_hdr(xdr, req, &hdr);
2388 encode_sequence(xdr, &args->seq_args, &hdr);
2389 encode_putfh(xdr, args->fh, &hdr);
2390 encode_readlink(xdr, args, req, &hdr);
2392 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2393 args->pgbase, args->pglen);
2398 * Encode a READDIR request
2400 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2401 const struct nfs4_readdir_arg *args)
2403 struct compound_hdr hdr = {
2404 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2407 encode_compound_hdr(xdr, req, &hdr);
2408 encode_sequence(xdr, &args->seq_args, &hdr);
2409 encode_putfh(xdr, args->fh, &hdr);
2410 encode_readdir(xdr, args, req, &hdr);
2412 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2413 args->pgbase, args->count);
2414 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2415 __func__, hdr.replen << 2, args->pages,
2416 args->pgbase, args->count);
2421 * Encode a READ request
2423 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2424 struct nfs_readargs *args)
2426 struct compound_hdr hdr = {
2427 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2430 encode_compound_hdr(xdr, req, &hdr);
2431 encode_sequence(xdr, &args->seq_args, &hdr);
2432 encode_putfh(xdr, args->fh, &hdr);
2433 encode_read(xdr, args, &hdr);
2435 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2436 args->pages, args->pgbase, args->count);
2437 req->rq_rcv_buf.flags |= XDRBUF_READ;
2442 * Encode an SETATTR request
2444 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2445 struct nfs_setattrargs *args)
2447 struct compound_hdr hdr = {
2448 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2451 encode_compound_hdr(xdr, req, &hdr);
2452 encode_sequence(xdr, &args->seq_args, &hdr);
2453 encode_putfh(xdr, args->fh, &hdr);
2454 encode_setattr(xdr, args, args->server, &hdr);
2455 encode_getfattr(xdr, args->bitmask, &hdr);
2460 * Encode a GETACL request
2462 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2463 struct nfs_getaclargs *args)
2465 struct compound_hdr hdr = {
2466 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2470 encode_compound_hdr(xdr, req, &hdr);
2471 encode_sequence(xdr, &args->seq_args, &hdr);
2472 encode_putfh(xdr, args->fh, &hdr);
2473 replen = hdr.replen + op_decode_hdr_maxsz + 1;
2474 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2476 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2477 args->acl_pages, args->acl_pgbase, args->acl_len);
2483 * Encode a WRITE request
2485 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2486 struct nfs_writeargs *args)
2488 struct compound_hdr hdr = {
2489 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2492 encode_compound_hdr(xdr, req, &hdr);
2493 encode_sequence(xdr, &args->seq_args, &hdr);
2494 encode_putfh(xdr, args->fh, &hdr);
2495 encode_write(xdr, args, &hdr);
2496 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2498 encode_getfattr(xdr, args->bitmask, &hdr);
2505 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2506 struct nfs_commitargs *args)
2508 struct compound_hdr hdr = {
2509 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2512 encode_compound_hdr(xdr, req, &hdr);
2513 encode_sequence(xdr, &args->seq_args, &hdr);
2514 encode_putfh(xdr, args->fh, &hdr);
2515 encode_commit(xdr, args, &hdr);
2522 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2523 struct nfs4_fsinfo_arg *args)
2525 struct compound_hdr hdr = {
2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_fsinfo(xdr, args->bitmask, &hdr);
2537 * a PATHCONF request
2539 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2540 const struct nfs4_pathconf_arg *args)
2542 struct compound_hdr hdr = {
2543 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2546 encode_compound_hdr(xdr, req, &hdr);
2547 encode_sequence(xdr, &args->seq_args, &hdr);
2548 encode_putfh(xdr, args->fh, &hdr);
2549 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2557 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2558 const struct nfs4_statfs_arg *args)
2560 struct compound_hdr hdr = {
2561 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2564 encode_compound_hdr(xdr, req, &hdr);
2565 encode_sequence(xdr, &args->seq_args, &hdr);
2566 encode_putfh(xdr, args->fh, &hdr);
2567 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2568 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2573 * GETATTR_BITMAP request
2575 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2576 struct xdr_stream *xdr,
2577 struct nfs4_server_caps_arg *args)
2579 struct compound_hdr hdr = {
2580 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2583 encode_compound_hdr(xdr, req, &hdr);
2584 encode_sequence(xdr, &args->seq_args, &hdr);
2585 encode_putfh(xdr, args->fhandle, &hdr);
2586 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2587 FATTR4_WORD0_FH_EXPIRE_TYPE|
2588 FATTR4_WORD0_LINK_SUPPORT|
2589 FATTR4_WORD0_SYMLINK_SUPPORT|
2590 FATTR4_WORD0_ACLSUPPORT, &hdr);
2597 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2598 struct nfs_client *clp)
2600 struct compound_hdr hdr = {
2604 encode_compound_hdr(xdr, req, &hdr);
2605 encode_renew(xdr, clp->cl_clientid, &hdr);
2610 * a SETCLIENTID request
2612 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2613 struct xdr_stream *xdr,
2614 struct nfs4_setclientid *sc)
2616 struct compound_hdr hdr = {
2620 encode_compound_hdr(xdr, req, &hdr);
2621 encode_setclientid(xdr, sc, &hdr);
2626 * a SETCLIENTID_CONFIRM request
2628 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2629 struct xdr_stream *xdr,
2630 struct nfs4_setclientid_res *arg)
2632 struct compound_hdr hdr = {
2636 encode_compound_hdr(xdr, req, &hdr);
2637 encode_setclientid_confirm(xdr, arg, &hdr);
2642 * DELEGRETURN request
2644 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2645 struct xdr_stream *xdr,
2646 const struct nfs4_delegreturnargs *args)
2648 struct compound_hdr hdr = {
2649 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2652 encode_compound_hdr(xdr, req, &hdr);
2653 encode_sequence(xdr, &args->seq_args, &hdr);
2654 encode_putfh(xdr, args->fhandle, &hdr);
2655 encode_getfattr(xdr, args->bitmask, &hdr);
2656 encode_delegreturn(xdr, args->stateid, &hdr);
2661 * Encode FS_LOCATIONS request
2663 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2664 struct xdr_stream *xdr,
2665 struct nfs4_fs_locations_arg *args)
2667 struct compound_hdr hdr = {
2668 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2672 encode_compound_hdr(xdr, req, &hdr);
2673 encode_sequence(xdr, &args->seq_args, &hdr);
2674 encode_putfh(xdr, args->dir_fh, &hdr);
2675 encode_lookup(xdr, args->name, &hdr);
2676 replen = hdr.replen; /* get the attribute into args->page */
2677 encode_fs_locations(xdr, args->bitmask, &hdr);
2679 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2685 * Encode SECINFO request
2687 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2688 struct xdr_stream *xdr,
2689 struct nfs4_secinfo_arg *args)
2691 struct compound_hdr hdr = {
2692 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2695 encode_compound_hdr(xdr, req, &hdr);
2696 encode_sequence(xdr, &args->seq_args, &hdr);
2697 encode_putfh(xdr, args->dir_fh, &hdr);
2698 encode_secinfo(xdr, args->name, &hdr);
2702 #if defined(CONFIG_NFS_V4_1)
2704 * BIND_CONN_TO_SESSION request
2706 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2707 struct xdr_stream *xdr,
2708 struct nfs_client *clp)
2710 struct compound_hdr hdr = {
2711 .minorversion = clp->cl_mvops->minor_version,
2714 encode_compound_hdr(xdr, req, &hdr);
2715 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
2720 * EXCHANGE_ID request
2722 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2723 struct xdr_stream *xdr,
2724 struct nfs41_exchange_id_args *args)
2726 struct compound_hdr hdr = {
2727 .minorversion = args->client->cl_mvops->minor_version,
2730 encode_compound_hdr(xdr, req, &hdr);
2731 encode_exchange_id(xdr, args, &hdr);
2736 * a CREATE_SESSION request
2738 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2739 struct xdr_stream *xdr,
2740 struct nfs41_create_session_args *args)
2742 struct compound_hdr hdr = {
2743 .minorversion = args->client->cl_mvops->minor_version,
2746 encode_compound_hdr(xdr, req, &hdr);
2747 encode_create_session(xdr, args, &hdr);
2752 * a DESTROY_SESSION request
2754 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2755 struct xdr_stream *xdr,
2756 struct nfs4_session *session)
2758 struct compound_hdr hdr = {
2759 .minorversion = session->clp->cl_mvops->minor_version,
2762 encode_compound_hdr(xdr, req, &hdr);
2763 encode_destroy_session(xdr, session, &hdr);
2768 * a DESTROY_CLIENTID request
2770 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2771 struct xdr_stream *xdr,
2772 struct nfs_client *clp)
2774 struct compound_hdr hdr = {
2775 .minorversion = clp->cl_mvops->minor_version,
2778 encode_compound_hdr(xdr, req, &hdr);
2779 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2784 * a SEQUENCE request
2786 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2787 struct nfs4_sequence_args *args)
2789 struct compound_hdr hdr = {
2790 .minorversion = nfs4_xdr_minorversion(args),
2793 encode_compound_hdr(xdr, req, &hdr);
2794 encode_sequence(xdr, args, &hdr);
2799 * a GET_LEASE_TIME request
2801 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2802 struct xdr_stream *xdr,
2803 struct nfs4_get_lease_time_args *args)
2805 struct compound_hdr hdr = {
2806 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2808 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
2810 encode_compound_hdr(xdr, req, &hdr);
2811 encode_sequence(xdr, &args->la_seq_args, &hdr);
2812 encode_putrootfh(xdr, &hdr);
2813 encode_fsinfo(xdr, lease_bitmap, &hdr);
2818 * a RECLAIM_COMPLETE request
2820 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2821 struct xdr_stream *xdr,
2822 struct nfs41_reclaim_complete_args *args)
2824 struct compound_hdr hdr = {
2825 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2828 encode_compound_hdr(xdr, req, &hdr);
2829 encode_sequence(xdr, &args->seq_args, &hdr);
2830 encode_reclaim_complete(xdr, args, &hdr);
2835 * Encode GETDEVICELIST request
2837 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2838 struct xdr_stream *xdr,
2839 struct nfs4_getdevicelist_args *args)
2841 struct compound_hdr hdr = {
2842 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2845 encode_compound_hdr(xdr, req, &hdr);
2846 encode_sequence(xdr, &args->seq_args, &hdr);
2847 encode_putfh(xdr, args->fh, &hdr);
2848 encode_getdevicelist(xdr, args, &hdr);
2853 * Encode GETDEVICEINFO request
2855 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2856 struct xdr_stream *xdr,
2857 struct nfs4_getdeviceinfo_args *args)
2859 struct compound_hdr hdr = {
2860 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2863 encode_compound_hdr(xdr, req, &hdr);
2864 encode_sequence(xdr, &args->seq_args, &hdr);
2865 encode_getdeviceinfo(xdr, args, &hdr);
2867 /* set up reply kvec. Subtract notification bitmap max size (2)
2868 * so that notification bitmap is put in xdr_buf tail */
2869 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2870 args->pdev->pages, args->pdev->pgbase,
2877 * Encode LAYOUTGET request
2879 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2880 struct xdr_stream *xdr,
2881 struct nfs4_layoutget_args *args)
2883 struct compound_hdr hdr = {
2884 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2887 encode_compound_hdr(xdr, req, &hdr);
2888 encode_sequence(xdr, &args->seq_args, &hdr);
2889 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2890 encode_layoutget(xdr, args, &hdr);
2892 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2893 args->layout.pages, 0, args->layout.pglen);
2899 * Encode LAYOUTCOMMIT request
2901 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2902 struct xdr_stream *xdr,
2903 struct nfs4_layoutcommit_args *args)
2905 struct nfs4_layoutcommit_data *data =
2906 container_of(args, struct nfs4_layoutcommit_data, args);
2907 struct compound_hdr hdr = {
2908 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2911 encode_compound_hdr(xdr, req, &hdr);
2912 encode_sequence(xdr, &args->seq_args, &hdr);
2913 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2914 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
2915 encode_getfattr(xdr, args->bitmask, &hdr);
2920 * Encode LAYOUTRETURN request
2922 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2923 struct xdr_stream *xdr,
2924 struct nfs4_layoutreturn_args *args)
2926 struct compound_hdr hdr = {
2927 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2930 encode_compound_hdr(xdr, req, &hdr);
2931 encode_sequence(xdr, &args->seq_args, &hdr);
2932 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2933 encode_layoutreturn(xdr, args, &hdr);
2938 * Encode SECINFO_NO_NAME request
2940 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2941 struct xdr_stream *xdr,
2942 struct nfs41_secinfo_no_name_args *args)
2944 struct compound_hdr hdr = {
2945 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2948 encode_compound_hdr(xdr, req, &hdr);
2949 encode_sequence(xdr, &args->seq_args, &hdr);
2950 encode_putrootfh(xdr, &hdr);
2951 encode_secinfo_no_name(xdr, args, &hdr);
2957 * Encode TEST_STATEID request
2959 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2960 struct xdr_stream *xdr,
2961 struct nfs41_test_stateid_args *args)
2963 struct compound_hdr hdr = {
2964 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2967 encode_compound_hdr(xdr, req, &hdr);
2968 encode_sequence(xdr, &args->seq_args, &hdr);
2969 encode_test_stateid(xdr, args, &hdr);
2974 * Encode FREE_STATEID request
2976 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2977 struct xdr_stream *xdr,
2978 struct nfs41_free_stateid_args *args)
2980 struct compound_hdr hdr = {
2981 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2984 encode_compound_hdr(xdr, req, &hdr);
2985 encode_sequence(xdr, &args->seq_args, &hdr);
2986 encode_free_stateid(xdr, args, &hdr);
2989 #endif /* CONFIG_NFS_V4_1 */
2991 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2993 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2994 "Remaining buffer length is %tu words.\n",
2995 func, xdr->end - xdr->p);
2998 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
3002 p = xdr_inline_decode(xdr, 4);
3005 *len = be32_to_cpup(p);
3006 p = xdr_inline_decode(xdr, *len);
3009 *string = (char *)p;
3012 print_overflow_msg(__func__, xdr);
3016 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3020 p = xdr_inline_decode(xdr, 8);
3023 hdr->status = be32_to_cpup(p++);
3024 hdr->taglen = be32_to_cpup(p);
3026 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3029 hdr->tag = (char *)p;
3030 p += XDR_QUADLEN(hdr->taglen);
3031 hdr->nops = be32_to_cpup(p);
3032 if (unlikely(hdr->nops < 1))
3033 return nfs4_stat_to_errno(hdr->status);
3036 print_overflow_msg(__func__, xdr);
3040 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3046 p = xdr_inline_decode(xdr, 8);
3049 opnum = be32_to_cpup(p++);
3050 if (opnum != expected) {
3051 dprintk("nfs: Server returned operation"
3052 " %d but we issued a request for %d\n",
3056 nfserr = be32_to_cpup(p);
3057 if (nfserr != NFS_OK)
3058 return nfs4_stat_to_errno(nfserr);
3061 print_overflow_msg(__func__, xdr);
3066 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
3069 unsigned int strlen;
3072 p = xdr_inline_decode(xdr, 12);
3074 return decode_opaque_inline(xdr, &strlen, &str);
3075 print_overflow_msg(__func__, xdr);
3079 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3084 p = xdr_inline_decode(xdr, 4);
3087 bmlen = be32_to_cpup(p);
3089 bitmap[0] = bitmap[1] = bitmap[2] = 0;
3090 p = xdr_inline_decode(xdr, (bmlen << 2));
3094 bitmap[0] = be32_to_cpup(p++);
3096 bitmap[1] = be32_to_cpup(p++);
3098 bitmap[2] = be32_to_cpup(p);
3103 print_overflow_msg(__func__, xdr);
3107 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3111 p = xdr_inline_decode(xdr, 4);
3114 *attrlen = be32_to_cpup(p);
3115 *savep = xdr_stream_pos(xdr);
3118 print_overflow_msg(__func__, xdr);
3122 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3124 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
3126 ret = decode_attr_bitmap(xdr, bitmask);
3127 if (unlikely(ret < 0))
3129 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3131 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3132 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3133 bitmask[0], bitmask[1], bitmask[2]);
3137 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3143 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3145 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
3146 p = xdr_inline_decode(xdr, 4);
3149 *type = be32_to_cpup(p);
3150 if (*type < NF4REG || *type > NF4NAMEDATTR) {
3151 dprintk("%s: bad type %d\n", __func__, *type);
3154 bitmap[0] &= ~FATTR4_WORD0_TYPE;
3155 ret = NFS_ATTR_FATTR_TYPE;
3157 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3160 print_overflow_msg(__func__, xdr);
3164 static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3165 uint32_t *bitmap, uint32_t *type)
3170 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3172 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3173 p = xdr_inline_decode(xdr, 4);
3176 *type = be32_to_cpup(p);
3177 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3179 dprintk("%s: expire type=0x%x\n", __func__, *type);
3182 print_overflow_msg(__func__, xdr);
3186 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3192 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3194 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
3195 p = xdr_inline_decode(xdr, 8);
3198 xdr_decode_hyper(p, change);
3199 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3200 ret = NFS_ATTR_FATTR_CHANGE;
3202 dprintk("%s: change attribute=%Lu\n", __func__,
3203 (unsigned long long)*change);
3206 print_overflow_msg(__func__, xdr);
3210 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3216 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3218 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
3219 p = xdr_inline_decode(xdr, 8);
3222 xdr_decode_hyper(p, size);
3223 bitmap[0] &= ~FATTR4_WORD0_SIZE;
3224 ret = NFS_ATTR_FATTR_SIZE;
3226 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3229 print_overflow_msg(__func__, xdr);
3233 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3238 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3240 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
3241 p = xdr_inline_decode(xdr, 4);
3244 *res = be32_to_cpup(p);
3245 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3247 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
3250 print_overflow_msg(__func__, xdr);
3254 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3259 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3261 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
3262 p = xdr_inline_decode(xdr, 4);
3265 *res = be32_to_cpup(p);
3266 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3268 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
3271 print_overflow_msg(__func__, xdr);
3275 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
3282 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3284 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
3285 p = xdr_inline_decode(xdr, 16);
3288 p = xdr_decode_hyper(p, &fsid->major);
3289 xdr_decode_hyper(p, &fsid->minor);
3290 bitmap[0] &= ~FATTR4_WORD0_FSID;
3291 ret = NFS_ATTR_FATTR_FSID;
3293 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
3294 (unsigned long long)fsid->major,
3295 (unsigned long long)fsid->minor);
3298 print_overflow_msg(__func__, xdr);
3302 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3307 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3309 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
3310 p = xdr_inline_decode(xdr, 4);
3313 *res = be32_to_cpup(p);
3314 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3316 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
3319 print_overflow_msg(__func__, xdr);
3323 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3327 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3329 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3330 p = xdr_inline_decode(xdr, 4);
3333 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3334 *res = -be32_to_cpup(p);
3338 print_overflow_msg(__func__, xdr);
3342 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3348 memset(fh, 0, sizeof(*fh));
3350 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3352 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3353 p = xdr_inline_decode(xdr, 4);
3356 len = be32_to_cpup(p);
3357 if (len > NFS4_FHSIZE)
3359 p = xdr_inline_decode(xdr, len);
3363 memcpy(fh->data, p, len);
3366 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3370 print_overflow_msg(__func__, xdr);
3374 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3378 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3379 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3381 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
3382 p = xdr_inline_decode(xdr, 4);
3385 *res = be32_to_cpup(p);
3386 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3388 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
3391 print_overflow_msg(__func__, xdr);
3395 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3401 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3403 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
3404 p = xdr_inline_decode(xdr, 8);
3407 xdr_decode_hyper(p, fileid);
3408 bitmap[0] &= ~FATTR4_WORD0_FILEID;
3409 ret = NFS_ATTR_FATTR_FILEID;
3411 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3414 print_overflow_msg(__func__, xdr);
3418 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3424 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3426 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
3427 p = xdr_inline_decode(xdr, 8);
3430 xdr_decode_hyper(p, fileid);
3431 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3432 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3434 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3437 print_overflow_msg(__func__, xdr);
3441 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3447 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3449 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
3450 p = xdr_inline_decode(xdr, 8);
3453 xdr_decode_hyper(p, res);
3454 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3456 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
3459 print_overflow_msg(__func__, xdr);
3463 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3469 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3471 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
3472 p = xdr_inline_decode(xdr, 8);
3475 xdr_decode_hyper(p, res);
3476 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3478 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
3481 print_overflow_msg(__func__, xdr);
3485 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3491 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3493 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
3494 p = xdr_inline_decode(xdr, 8);
3497 xdr_decode_hyper(p, res);
3498 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3500 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
3503 print_overflow_msg(__func__, xdr);
3507 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3513 p = xdr_inline_decode(xdr, 4);
3516 n = be32_to_cpup(p);
3519 dprintk("pathname4: ");
3520 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3521 dprintk("cannot parse %d components in path\n", n);
3524 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3525 struct nfs4_string *component = &path->components[path->ncomponents];
3526 status = decode_opaque_inline(xdr, &component->len, &component->data);
3527 if (unlikely(status != 0))
3531 (path->ncomponents != n ? "/ " : ""),
3532 component->len, component->data);
3537 /* a root pathname is sent as a zero component4 */
3538 path->ncomponents = 1;
3539 path->components[0].len=0;
3540 path->components[0].data=NULL;
3541 dprintk("pathname4: /\n");
3544 dprintk(" status %d", status);
3548 print_overflow_msg(__func__, xdr);
3552 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3558 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3561 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3564 /* Ignore borken servers that return unrequested attrs */
3565 if (unlikely(res == NULL))
3567 dprintk("%s: fsroot:\n", __func__);
3568 status = decode_pathname(xdr, &res->fs_path);
3569 if (unlikely(status != 0))
3571 p = xdr_inline_decode(xdr, 4);
3574 n = be32_to_cpup(p);
3577 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3579 struct nfs4_fs_location *loc;
3581 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3583 loc = &res->locations[res->nlocations];
3584 p = xdr_inline_decode(xdr, 4);
3587 m = be32_to_cpup(p);
3589 dprintk("%s: servers:\n", __func__);
3590 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3591 struct nfs4_string *server;
3593 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3595 dprintk("%s: using first %u of %u servers "
3596 "returned for location %u\n",
3598 NFS4_FS_LOCATION_MAXSERVERS,
3599 m, res->nlocations);
3600 for (i = loc->nservers; i < m; i++) {
3603 status = decode_opaque_inline(xdr, &len, &data);
3604 if (unlikely(status != 0))
3609 server = &loc->servers[loc->nservers];
3610 status = decode_opaque_inline(xdr, &server->len, &server->data);
3611 if (unlikely(status != 0))
3613 dprintk("%s ", server->data);
3615 status = decode_pathname(xdr, &loc->rootpath);
3616 if (unlikely(status != 0))
3619 if (res->nlocations != 0)
3620 status = NFS_ATTR_FATTR_V4_LOCATIONS;
3622 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3625 print_overflow_msg(__func__, xdr);
3631 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3637 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3639 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
3640 p = xdr_inline_decode(xdr, 8);
3643 xdr_decode_hyper(p, res);
3644 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3646 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
3649 print_overflow_msg(__func__, xdr);
3653 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3659 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3661 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
3662 p = xdr_inline_decode(xdr, 4);
3665 *maxlink = be32_to_cpup(p);
3666 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3668 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
3671 print_overflow_msg(__func__, xdr);
3675 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3681 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3683 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
3684 p = xdr_inline_decode(xdr, 4);
3687 *maxname = be32_to_cpup(p);
3688 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3690 dprintk("%s: maxname=%u\n", __func__, *maxname);
3693 print_overflow_msg(__func__, xdr);
3697 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3703 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3705 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3707 p = xdr_inline_decode(xdr, 8);
3710 xdr_decode_hyper(p, &maxread);
3711 if (maxread > 0x7FFFFFFF)
3712 maxread = 0x7FFFFFFF;
3713 *res = (uint32_t)maxread;
3714 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3716 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
3719 print_overflow_msg(__func__, xdr);
3723 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3729 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3731 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3733 p = xdr_inline_decode(xdr, 8);
3736 xdr_decode_hyper(p, &maxwrite);
3737 if (maxwrite > 0x7FFFFFFF)
3738 maxwrite = 0x7FFFFFFF;
3739 *res = (uint32_t)maxwrite;
3740 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3742 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
3745 print_overflow_msg(__func__, xdr);
3749 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
3756 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3758 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
3759 p = xdr_inline_decode(xdr, 4);
3762 tmp = be32_to_cpup(p);
3763 *mode = tmp & ~S_IFMT;
3764 bitmap[1] &= ~FATTR4_WORD1_MODE;
3765 ret = NFS_ATTR_FATTR_MODE;
3767 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3770 print_overflow_msg(__func__, xdr);
3774 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3780 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3782 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
3783 p = xdr_inline_decode(xdr, 4);
3786 *nlink = be32_to_cpup(p);
3787 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3788 ret = NFS_ATTR_FATTR_NLINK;
3790 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3793 print_overflow_msg(__func__, xdr);
3797 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3798 const struct nfs_server *server, kuid_t *uid,
3799 struct nfs4_string *owner_name)
3805 *uid = make_kuid(&init_user_ns, -2);
3806 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3808 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
3809 p = xdr_inline_decode(xdr, 4);
3812 len = be32_to_cpup(p);
3813 p = xdr_inline_decode(xdr, len);
3816 if (owner_name != NULL) {
3817 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3818 if (owner_name->data != NULL) {
3819 owner_name->len = len;
3820 ret = NFS_ATTR_FATTR_OWNER_NAME;
3822 } else if (len < XDR_MAX_NETOBJ) {
3823 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3824 ret = NFS_ATTR_FATTR_OWNER;
3826 dprintk("%s: nfs_map_name_to_uid failed!\n",
3829 dprintk("%s: name too long (%u)!\n",
3831 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3833 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3836 print_overflow_msg(__func__, xdr);
3840 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3841 const struct nfs_server *server, kgid_t *gid,
3842 struct nfs4_string *group_name)
3848 *gid = make_kgid(&init_user_ns, -2);
3849 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3851 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
3852 p = xdr_inline_decode(xdr, 4);
3855 len = be32_to_cpup(p);
3856 p = xdr_inline_decode(xdr, len);
3859 if (group_name != NULL) {
3860 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3861 if (group_name->data != NULL) {
3862 group_name->len = len;
3863 ret = NFS_ATTR_FATTR_GROUP_NAME;
3865 } else if (len < XDR_MAX_NETOBJ) {
3866 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3867 ret = NFS_ATTR_FATTR_GROUP;
3869 dprintk("%s: nfs_map_group_to_gid failed!\n",
3872 dprintk("%s: name too long (%u)!\n",
3874 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3876 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3879 print_overflow_msg(__func__, xdr);
3883 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3885 uint32_t major = 0, minor = 0;
3890 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3892 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3895 p = xdr_inline_decode(xdr, 8);
3898 major = be32_to_cpup(p++);
3899 minor = be32_to_cpup(p);
3900 tmp = MKDEV(major, minor);
3901 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3903 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3904 ret = NFS_ATTR_FATTR_RDEV;
3906 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3909 print_overflow_msg(__func__, xdr);
3913 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3919 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3921 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
3922 p = xdr_inline_decode(xdr, 8);
3925 xdr_decode_hyper(p, res);
3926 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3928 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
3931 print_overflow_msg(__func__, xdr);
3935 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3941 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3943 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
3944 p = xdr_inline_decode(xdr, 8);
3947 xdr_decode_hyper(p, res);
3948 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3950 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
3953 print_overflow_msg(__func__, xdr);
3957 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3963 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3965 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
3966 p = xdr_inline_decode(xdr, 8);
3969 xdr_decode_hyper(p, res);
3970 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3972 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
3975 print_overflow_msg(__func__, xdr);
3979 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3985 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3987 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
3988 p = xdr_inline_decode(xdr, 8);
3991 xdr_decode_hyper(p, used);
3992 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
3993 ret = NFS_ATTR_FATTR_SPACE_USED;
3995 dprintk("%s: space used=%Lu\n", __func__,
3996 (unsigned long long)*used);
3999 print_overflow_msg(__func__, xdr);
4003 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4009 p = xdr_inline_decode(xdr, 12);
4012 p = xdr_decode_hyper(p, &sec);
4013 nsec = be32_to_cpup(p);
4014 time->tv_sec = (time_t)sec;
4015 time->tv_nsec = (long)nsec;
4018 print_overflow_msg(__func__, xdr);
4022 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4028 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4030 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4031 status = decode_attr_time(xdr, time);
4033 status = NFS_ATTR_FATTR_ATIME;
4034 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4036 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
4040 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4046 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4048 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4049 status = decode_attr_time(xdr, time);
4051 status = NFS_ATTR_FATTR_CTIME;
4052 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4054 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
4058 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4059 struct timespec *time)
4065 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4067 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4068 status = decode_attr_time(xdr, time);
4069 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4071 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4072 (long)time->tv_nsec);
4076 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4077 struct nfs4_label *label)
4085 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4087 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4088 p = xdr_inline_decode(xdr, 4);
4091 lfs = be32_to_cpup(p++);
4092 p = xdr_inline_decode(xdr, 4);
4095 pi = be32_to_cpup(p++);
4096 p = xdr_inline_decode(xdr, 4);
4099 len = be32_to_cpup(p++);
4100 p = xdr_inline_decode(xdr, len);
4103 if (len < NFS4_MAXLABELLEN) {
4105 memcpy(label->label, p, len);
4109 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4111 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4113 printk(KERN_WARNING "%s: label too long (%u)!\n",
4116 if (label && label->label)
4117 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4118 (char *)label->label, label->len, label->pi, label->lfs);
4122 print_overflow_msg(__func__, xdr);
4126 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4132 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4134 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4135 status = decode_attr_time(xdr, time);
4137 status = NFS_ATTR_FATTR_MTIME;
4138 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4140 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
4144 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4146 unsigned int attrwords = XDR_QUADLEN(attrlen);
4147 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4149 if (unlikely(attrwords != nwords)) {
4150 dprintk("%s: server returned incorrect attribute length: "
4154 (attrwords < nwords) ? '<' : '>',
4161 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4165 p = xdr_inline_decode(xdr, 20);
4168 cinfo->atomic = be32_to_cpup(p++);
4169 p = xdr_decode_hyper(p, &cinfo->before);
4170 xdr_decode_hyper(p, &cinfo->after);
4173 print_overflow_msg(__func__, xdr);
4177 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
4183 status = decode_op_hdr(xdr, OP_ACCESS);
4186 p = xdr_inline_decode(xdr, 8);
4189 supp = be32_to_cpup(p++);
4190 acc = be32_to_cpup(p);
4195 print_overflow_msg(__func__, xdr);
4199 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
4203 p = xdr_inline_decode(xdr, len);
4205 memcpy(buf, p, len);
4208 print_overflow_msg(__func__, xdr);
4212 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4214 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4217 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4221 status = decode_op_hdr(xdr, OP_CLOSE);
4223 nfs_increment_open_seqid(status, res->seqid);
4225 status = decode_stateid(xdr, &res->stateid);
4229 static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4231 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4234 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4236 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4239 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4243 status = decode_op_hdr(xdr, OP_COMMIT);
4245 status = decode_write_verifier(xdr, &res->verf->verifier);
4249 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4255 status = decode_op_hdr(xdr, OP_CREATE);
4258 if ((status = decode_change_info(xdr, cinfo)))
4260 p = xdr_inline_decode(xdr, 4);
4263 bmlen = be32_to_cpup(p);
4264 p = xdr_inline_decode(xdr, bmlen << 2);
4268 print_overflow_msg(__func__, xdr);
4272 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4275 uint32_t attrlen, bitmap[3] = {0};
4278 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4280 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4282 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4284 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4286 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4287 &res->fh_expire_type)) != 0)
4289 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4291 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4293 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4295 status = verify_attr_len(xdr, savep, attrlen);
4297 dprintk("%s: xdr returned %d!\n", __func__, -status);
4301 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4304 uint32_t attrlen, bitmap[3] = {0};
4307 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4309 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4311 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4314 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4316 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4318 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4320 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4322 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4324 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4327 status = verify_attr_len(xdr, savep, attrlen);
4329 dprintk("%s: xdr returned %d!\n", __func__, -status);
4333 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4336 uint32_t attrlen, bitmap[3] = {0};
4339 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4341 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4343 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4346 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4348 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4351 status = verify_attr_len(xdr, savep, attrlen);
4353 dprintk("%s: xdr returned %d!\n", __func__, -status);
4357 static int decode_threshold_hint(struct xdr_stream *xdr,
4365 if (likely(bitmap[0] & hint_bit)) {
4366 p = xdr_inline_decode(xdr, 8);
4369 xdr_decode_hyper(p, res);
4373 print_overflow_msg(__func__, xdr);
4377 static int decode_first_threshold_item4(struct xdr_stream *xdr,
4378 struct nfs4_threshold *res)
4382 uint32_t bitmap[3] = {0,}, attrlen;
4386 p = xdr_inline_decode(xdr, 4);
4388 print_overflow_msg(__func__, xdr);
4391 res->l_type = be32_to_cpup(p);
4393 /* thi_hintset bitmap */
4394 status = decode_attr_bitmap(xdr, bitmap);
4398 /* thi_hintlist length */
4399 status = decode_attr_length(xdr, &attrlen, &savep);
4403 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4406 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4409 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4413 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4418 status = verify_attr_len(xdr, savep, attrlen);
4419 res->bm = bitmap[0];
4421 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4422 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4425 dprintk("%s ret=%d!\n", __func__, status);
4430 * Thresholds on pNFS direct I/O vrs MDS I/O
4432 static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4434 struct nfs4_threshold *res)
4440 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4442 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4443 /* Did the server return an unrequested attribute? */
4444 if (unlikely(res == NULL))
4446 p = xdr_inline_decode(xdr, 4);
4449 num = be32_to_cpup(p);
4453 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4454 "drivers per filesystem not supported\n",
4457 status = decode_first_threshold_item4(xdr, res);
4458 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4462 print_overflow_msg(__func__, xdr);
4466 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4467 struct nfs_fattr *fattr, struct nfs_fh *fh,
4468 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4469 const struct nfs_server *server)
4476 status = decode_attr_type(xdr, bitmap, &type);
4481 fattr->mode |= nfs_type2fmt[type];
4482 fattr->valid |= status;
4485 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4488 fattr->valid |= status;
4490 status = decode_attr_size(xdr, bitmap, &fattr->size);
4493 fattr->valid |= status;
4495 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4498 fattr->valid |= status;
4501 status = decode_attr_error(xdr, bitmap, &err);
4505 status = decode_attr_filehandle(xdr, bitmap, fh);
4509 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4512 fattr->valid |= status;
4514 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4517 fattr->valid |= status;
4519 status = decode_attr_mode(xdr, bitmap, &fmode);
4523 fattr->mode |= fmode;
4524 fattr->valid |= status;
4527 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4530 fattr->valid |= status;
4532 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4535 fattr->valid |= status;
4537 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4540 fattr->valid |= status;
4542 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4545 fattr->valid |= status;
4547 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4550 fattr->valid |= status;
4552 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4555 fattr->valid |= status;
4557 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4560 fattr->valid |= status;
4562 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4565 fattr->valid |= status;
4567 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4570 fattr->valid |= status;
4572 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4577 status = decode_attr_security_label(xdr, bitmap, label);
4580 fattr->valid |= status;
4584 dprintk("%s: xdr returned %d\n", __func__, -status);
4588 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4589 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4590 struct nfs4_label *label, const struct nfs_server *server)
4597 status = decode_op_hdr(xdr, OP_GETATTR);
4601 status = decode_attr_bitmap(xdr, bitmap);
4605 status = decode_attr_length(xdr, &attrlen, &savep);
4609 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4614 status = verify_attr_len(xdr, savep, attrlen);
4616 dprintk("%s: xdr returned %d\n", __func__, -status);
4620 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4621 struct nfs4_label *label, const struct nfs_server *server)
4623 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4626 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4627 const struct nfs_server *server)
4629 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4633 * Decode potentially multiple layout types. Currently we only support
4634 * one layout driver per file system.
4636 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4637 uint32_t *layouttype)
4642 p = xdr_inline_decode(xdr, 4);
4645 num = be32_to_cpup(p);
4647 /* pNFS is not supported by the underlying file system */
4653 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4654 "drivers per filesystem not supported\n", __func__);
4656 /* Decode and set first layout type, move xdr->p past unused types */
4657 p = xdr_inline_decode(xdr, num * 4);
4660 *layouttype = be32_to_cpup(p);
4663 print_overflow_msg(__func__, xdr);
4668 * The type of file system exported.
4669 * Note we must ensure that layouttype is set in any non-error case.
4671 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4672 uint32_t *layouttype)
4676 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4677 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4679 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4680 status = decode_first_pnfs_layout_type(xdr, layouttype);
4681 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4688 * The prefered block size for layout directed io
4690 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4695 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4697 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4698 p = xdr_inline_decode(xdr, 4);
4700 print_overflow_msg(__func__, xdr);
4703 *res = be32_to_cpup(p);
4704 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4709 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4712 uint32_t attrlen, bitmap[3];
4715 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4717 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4719 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4722 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4724 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4726 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4728 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4730 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4731 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4733 fsinfo->wtpref = fsinfo->wtmax;
4734 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4737 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4740 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4744 status = verify_attr_len(xdr, savep, attrlen);
4746 dprintk("%s: xdr returned %d!\n", __func__, -status);
4750 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4756 /* Zero handle first to allow comparisons */
4757 memset(fh, 0, sizeof(*fh));
4759 status = decode_op_hdr(xdr, OP_GETFH);
4763 p = xdr_inline_decode(xdr, 4);
4766 len = be32_to_cpup(p);
4767 if (len > NFS4_FHSIZE)
4770 p = xdr_inline_decode(xdr, len);
4773 memcpy(fh->data, p, len);
4776 print_overflow_msg(__func__, xdr);
4780 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4784 status = decode_op_hdr(xdr, OP_LINK);
4787 return decode_change_info(xdr, cinfo);
4791 * We create the owner, so we know a proper owner.id length is 4.
4793 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
4795 uint64_t offset, length, clientid;
4797 uint32_t namelen, type;
4799 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
4802 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
4803 p = xdr_decode_hyper(p, &length);
4804 type = be32_to_cpup(p++); /* 4 byte read */
4805 if (fl != NULL) { /* manipulate file lock */
4806 fl->fl_start = (loff_t)offset;
4807 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4808 if (length == ~(uint64_t)0)
4809 fl->fl_end = OFFSET_MAX;
4810 fl->fl_type = F_WRLCK;
4812 fl->fl_type = F_RDLCK;
4815 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4816 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4817 p = xdr_inline_decode(xdr, namelen); /* variable size field */
4819 return -NFS4ERR_DENIED;
4821 print_overflow_msg(__func__, xdr);
4825 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
4829 status = decode_op_hdr(xdr, OP_LOCK);
4833 status = decode_stateid(xdr, &res->stateid);
4834 if (unlikely(status))
4836 } else if (status == -NFS4ERR_DENIED)
4837 status = decode_lock_denied(xdr, NULL);
4838 if (res->open_seqid != NULL)
4839 nfs_increment_open_seqid(status, res->open_seqid);
4840 nfs_increment_lock_seqid(status, res->lock_seqid);
4845 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
4848 status = decode_op_hdr(xdr, OP_LOCKT);
4849 if (status == -NFS4ERR_DENIED)
4850 return decode_lock_denied(xdr, res->denied);
4854 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
4858 status = decode_op_hdr(xdr, OP_LOCKU);
4860 nfs_increment_lock_seqid(status, res->seqid);
4862 status = decode_stateid(xdr, &res->stateid);
4866 static int decode_release_lockowner(struct xdr_stream *xdr)
4868 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4871 static int decode_lookup(struct xdr_stream *xdr)
4873 return decode_op_hdr(xdr, OP_LOOKUP);
4876 /* This is too sick! */
4877 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4880 uint32_t limit_type, nblocks, blocksize;
4882 p = xdr_inline_decode(xdr, 12);
4885 limit_type = be32_to_cpup(p++);
4886 switch (limit_type) {
4888 xdr_decode_hyper(p, maxsize);
4891 nblocks = be32_to_cpup(p++);
4892 blocksize = be32_to_cpup(p);
4893 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
4897 print_overflow_msg(__func__, xdr);
4901 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4904 uint32_t delegation_type;
4907 p = xdr_inline_decode(xdr, 4);
4910 delegation_type = be32_to_cpup(p);
4911 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4912 res->delegation_type = 0;
4915 status = decode_stateid(xdr, &res->delegation);
4916 if (unlikely(status))
4918 p = xdr_inline_decode(xdr, 4);
4921 res->do_recall = be32_to_cpup(p);
4923 switch (delegation_type) {
4924 case NFS4_OPEN_DELEGATE_READ:
4925 res->delegation_type = FMODE_READ;
4927 case NFS4_OPEN_DELEGATE_WRITE:
4928 res->delegation_type = FMODE_WRITE|FMODE_READ;
4929 if (decode_space_limit(xdr, &res->maxsize) < 0)
4932 return decode_ace(xdr, NULL, res->server->nfs_client);
4934 print_overflow_msg(__func__, xdr);
4938 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4941 uint32_t savewords, bmlen, i;
4944 status = decode_op_hdr(xdr, OP_OPEN);
4946 nfs_increment_open_seqid(status, res->seqid);
4948 status = decode_stateid(xdr, &res->stateid);
4949 if (unlikely(status))
4952 decode_change_info(xdr, &res->cinfo);
4954 p = xdr_inline_decode(xdr, 8);
4957 res->rflags = be32_to_cpup(p++);
4958 bmlen = be32_to_cpup(p);
4962 p = xdr_inline_decode(xdr, bmlen << 2);
4965 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4966 for (i = 0; i < savewords; ++i)
4967 res->attrset[i] = be32_to_cpup(p++);
4968 for (; i < NFS4_BITMAP_SIZE; i++)
4969 res->attrset[i] = 0;
4971 return decode_delegation(xdr, res);
4973 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
4976 print_overflow_msg(__func__, xdr);
4980 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4984 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
4986 nfs_increment_open_seqid(status, res->seqid);
4988 status = decode_stateid(xdr, &res->stateid);
4992 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4996 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
4998 nfs_increment_open_seqid(status, res->seqid);
5000 status = decode_stateid(xdr, &res->stateid);
5004 static int decode_putfh(struct xdr_stream *xdr)
5006 return decode_op_hdr(xdr, OP_PUTFH);
5009 static int decode_putrootfh(struct xdr_stream *xdr)
5011 return decode_op_hdr(xdr, OP_PUTROOTFH);
5014 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
5017 uint32_t count, eof, recvd;
5020 status = decode_op_hdr(xdr, OP_READ);
5023 p = xdr_inline_decode(xdr, 8);
5026 eof = be32_to_cpup(p++);
5027 count = be32_to_cpup(p);
5028 recvd = xdr_read_pages(xdr, count);
5029 if (count > recvd) {
5030 dprintk("NFS: server cheating in read reply: "
5031 "count %u > recvd %u\n", count, recvd);
5039 print_overflow_msg(__func__, xdr);
5043 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5048 status = decode_op_hdr(xdr, OP_READDIR);
5050 status = decode_verifier(xdr, readdir->verifier.data);
5051 if (unlikely(status))
5053 memcpy(verf, readdir->verifier.data, sizeof(verf));
5054 dprintk("%s: verifier = %08x:%08x\n",
5055 __func__, verf[0], verf[1]);
5056 return xdr_read_pages(xdr, xdr->buf->page_len);
5059 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5061 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5066 status = decode_op_hdr(xdr, OP_READLINK);
5070 /* Convert length of symlink */
5071 p = xdr_inline_decode(xdr, 4);
5074 len = be32_to_cpup(p);
5075 if (len >= rcvbuf->page_len || len <= 0) {
5076 dprintk("nfs: server returned giant symlink!\n");
5077 return -ENAMETOOLONG;
5079 recvd = xdr_read_pages(xdr, len);
5081 dprintk("NFS: server cheating in readlink reply: "
5082 "count %u > recvd %u\n", len, recvd);
5086 * The XDR encode routine has set things up so that
5087 * the link text will be copied directly into the
5088 * buffer. We just have to do overflow-checking,
5089 * and and null-terminate the text (the VFS expects
5090 * null-termination).
5092 xdr_terminate_string(rcvbuf, len);
5095 print_overflow_msg(__func__, xdr);
5099 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5103 status = decode_op_hdr(xdr, OP_REMOVE);
5106 status = decode_change_info(xdr, cinfo);
5111 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5112 struct nfs4_change_info *new_cinfo)
5116 status = decode_op_hdr(xdr, OP_RENAME);
5119 if ((status = decode_change_info(xdr, old_cinfo)))
5121 status = decode_change_info(xdr, new_cinfo);
5126 static int decode_renew(struct xdr_stream *xdr)
5128 return decode_op_hdr(xdr, OP_RENEW);
5132 decode_restorefh(struct xdr_stream *xdr)
5134 return decode_op_hdr(xdr, OP_RESTOREFH);
5137 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5138 struct nfs_getaclres *res)
5144 unsigned int pg_offset;
5147 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5150 xdr_enter_page(xdr, xdr->buf->page_len);
5152 /* Calculate the offset of the page data */
5153 pg_offset = xdr->buf->head[0].iov_len;
5155 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5157 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5160 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5162 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5164 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5165 * are stored with the acl data to handle the problem of
5166 * variable length bitmaps.*/
5167 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5168 res->acl_len = attrlen;
5170 /* Check for receive buffer overflow */
5171 if (res->acl_len > (xdr->nwords << 2) ||
5172 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5173 res->acl_flags |= NFS4_ACL_TRUNC;
5174 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5175 attrlen, xdr->nwords << 2);
5178 status = -EOPNOTSUPP;
5185 decode_savefh(struct xdr_stream *xdr)
5187 return decode_op_hdr(xdr, OP_SAVEFH);
5190 static int decode_setattr(struct xdr_stream *xdr)
5196 status = decode_op_hdr(xdr, OP_SETATTR);
5199 p = xdr_inline_decode(xdr, 4);
5202 bmlen = be32_to_cpup(p);
5203 p = xdr_inline_decode(xdr, bmlen << 2);
5207 print_overflow_msg(__func__, xdr);
5211 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
5217 p = xdr_inline_decode(xdr, 8);
5220 opnum = be32_to_cpup(p++);
5221 if (opnum != OP_SETCLIENTID) {
5222 dprintk("nfs: decode_setclientid: Server returned operation"
5226 nfserr = be32_to_cpup(p);
5227 if (nfserr == NFS_OK) {
5228 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5231 p = xdr_decode_hyper(p, &res->clientid);
5232 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
5233 } else if (nfserr == NFSERR_CLID_INUSE) {
5236 /* skip netid string */
5237 p = xdr_inline_decode(xdr, 4);
5240 len = be32_to_cpup(p);
5241 p = xdr_inline_decode(xdr, len);
5245 /* skip uaddr string */
5246 p = xdr_inline_decode(xdr, 4);
5249 len = be32_to_cpup(p);
5250 p = xdr_inline_decode(xdr, len);
5253 return -NFSERR_CLID_INUSE;
5255 return nfs4_stat_to_errno(nfserr);
5259 print_overflow_msg(__func__, xdr);
5263 static int decode_setclientid_confirm(struct xdr_stream *xdr)
5265 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5268 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5273 status = decode_op_hdr(xdr, OP_WRITE);
5277 p = xdr_inline_decode(xdr, 8);
5280 res->count = be32_to_cpup(p++);
5281 res->verf->committed = be32_to_cpup(p++);
5282 return decode_write_verifier(xdr, &res->verf->verifier);
5284 print_overflow_msg(__func__, xdr);
5288 static int decode_delegreturn(struct xdr_stream *xdr)
5290 return decode_op_hdr(xdr, OP_DELEGRETURN);
5293 static int decode_secinfo_gss(struct xdr_stream *xdr,
5294 struct nfs4_secinfo4 *flavor)
5299 p = xdr_inline_decode(xdr, 4);
5302 oid_len = be32_to_cpup(p);
5303 if (oid_len > GSS_OID_MAX_LEN)
5306 p = xdr_inline_decode(xdr, oid_len);
5309 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5310 flavor->flavor_info.oid.len = oid_len;
5312 p = xdr_inline_decode(xdr, 8);
5315 flavor->flavor_info.qop = be32_to_cpup(p++);
5316 flavor->flavor_info.service = be32_to_cpup(p);
5321 print_overflow_msg(__func__, xdr);
5327 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5329 struct nfs4_secinfo4 *sec_flavor;
5330 unsigned int i, num_flavors;
5334 p = xdr_inline_decode(xdr, 4);
5338 res->flavors->num_flavors = 0;
5339 num_flavors = be32_to_cpup(p);
5341 for (i = 0; i < num_flavors; i++) {
5342 sec_flavor = &res->flavors->flavors[i];
5343 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
5346 p = xdr_inline_decode(xdr, 4);
5349 sec_flavor->flavor = be32_to_cpup(p);
5351 if (sec_flavor->flavor == RPC_AUTH_GSS) {
5352 status = decode_secinfo_gss(xdr, sec_flavor);
5356 res->flavors->num_flavors++;
5363 print_overflow_msg(__func__, xdr);
5367 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5369 int status = decode_op_hdr(xdr, OP_SECINFO);
5372 return decode_secinfo_common(xdr, res);
5375 #if defined(CONFIG_NFS_V4_1)
5376 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5378 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5381 return decode_secinfo_common(xdr, res);
5384 static int decode_exchange_id(struct xdr_stream *xdr,
5385 struct nfs41_exchange_id_res *res)
5391 uint32_t impl_id_count;
5393 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5397 p = xdr_inline_decode(xdr, 8);
5400 xdr_decode_hyper(p, &res->clientid);
5401 p = xdr_inline_decode(xdr, 12);
5404 res->seqid = be32_to_cpup(p++);
5405 res->flags = be32_to_cpup(p++);
5407 /* We ask for SP4_NONE */
5408 dummy = be32_to_cpup(p);
5409 if (dummy != SP4_NONE)
5412 /* server_owner4.so_minor_id */
5413 p = xdr_inline_decode(xdr, 8);
5416 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
5418 /* server_owner4.so_major_id */
5419 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5420 if (unlikely(status))
5422 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5424 memcpy(res->server_owner->major_id, dummy_str, dummy);
5425 res->server_owner->major_id_sz = dummy;
5428 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5429 if (unlikely(status))
5431 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5433 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5434 res->server_scope->server_scope_sz = dummy;
5436 /* Implementation Id */
5437 p = xdr_inline_decode(xdr, 4);
5440 impl_id_count = be32_to_cpup(p++);
5442 if (impl_id_count) {
5444 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5445 if (unlikely(status))
5447 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5449 memcpy(res->impl_id->domain, dummy_str, dummy);
5452 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5453 if (unlikely(status))
5455 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5457 memcpy(res->impl_id->name, dummy_str, dummy);
5460 p = xdr_inline_decode(xdr, 12);
5463 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5464 res->impl_id->date.nseconds = be32_to_cpup(p);
5466 /* if there's more than one entry, ignore the rest */
5470 print_overflow_msg(__func__, xdr);
5474 static int decode_chan_attrs(struct xdr_stream *xdr,
5475 struct nfs4_channel_attrs *attrs)
5480 p = xdr_inline_decode(xdr, 28);
5483 val = be32_to_cpup(p++); /* headerpadsz */
5485 return -EINVAL; /* no support for header padding yet */
5486 attrs->max_rqst_sz = be32_to_cpup(p++);
5487 attrs->max_resp_sz = be32_to_cpup(p++);
5488 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5489 attrs->max_ops = be32_to_cpup(p++);
5490 attrs->max_reqs = be32_to_cpup(p++);
5491 nr_attrs = be32_to_cpup(p);
5492 if (unlikely(nr_attrs > 1)) {
5493 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5494 "count %u\n", __func__, nr_attrs);
5497 if (nr_attrs == 1) {
5498 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5504 print_overflow_msg(__func__, xdr);
5508 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5510 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
5513 static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5514 struct nfs41_bind_conn_to_session_res *res)
5519 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5521 status = decode_sessionid(xdr, &res->session->sess_id);
5522 if (unlikely(status))
5525 /* dir flags, rdma mode bool */
5526 p = xdr_inline_decode(xdr, 8);
5530 res->dir = be32_to_cpup(p++);
5531 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5533 if (be32_to_cpup(p) == 0)
5534 res->use_conn_in_rdma_mode = false;
5536 res->use_conn_in_rdma_mode = true;
5540 print_overflow_msg(__func__, xdr);
5544 static int decode_create_session(struct xdr_stream *xdr,
5545 struct nfs41_create_session_res *res)
5549 struct nfs_client *clp = res->client;
5550 struct nfs4_session *session = clp->cl_session;
5552 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5554 status = decode_sessionid(xdr, &session->sess_id);
5555 if (unlikely(status))
5559 p = xdr_inline_decode(xdr, 8);
5562 clp->cl_seqid = be32_to_cpup(p++);
5563 session->flags = be32_to_cpup(p);
5565 /* Channel attributes */
5566 status = decode_chan_attrs(xdr, &session->fc_attrs);
5568 status = decode_chan_attrs(xdr, &session->bc_attrs);
5571 print_overflow_msg(__func__, xdr);
5575 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5577 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5580 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5582 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5585 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5587 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5589 #endif /* CONFIG_NFS_V4_1 */
5591 static int decode_sequence(struct xdr_stream *xdr,
5592 struct nfs4_sequence_res *res,
5593 struct rpc_rqst *rqstp)
5595 #if defined(CONFIG_NFS_V4_1)
5596 struct nfs4_session *session;
5597 struct nfs4_sessionid id;
5602 if (res->sr_slot == NULL)
5605 status = decode_op_hdr(xdr, OP_SEQUENCE);
5607 status = decode_sessionid(xdr, &id);
5608 if (unlikely(status))
5612 * If the server returns different values for sessionID, slotID or
5613 * sequence number, the server is looney tunes.
5615 status = -EREMOTEIO;
5616 session = res->sr_slot->table->session;
5618 if (memcmp(id.data, session->sess_id.data,
5619 NFS4_MAX_SESSIONID_LEN)) {
5620 dprintk("%s Invalid session id\n", __func__);
5624 p = xdr_inline_decode(xdr, 20);
5629 dummy = be32_to_cpup(p++);
5630 if (dummy != res->sr_slot->seq_nr) {
5631 dprintk("%s Invalid sequence number\n", __func__);
5635 dummy = be32_to_cpup(p++);
5636 if (dummy != res->sr_slot->slot_nr) {
5637 dprintk("%s Invalid slot id\n", __func__);
5640 /* highest slot id */
5641 res->sr_highest_slotid = be32_to_cpup(p++);
5642 /* target highest slot id */
5643 res->sr_target_highest_slotid = be32_to_cpup(p++);
5645 res->sr_status_flags = be32_to_cpup(p);
5648 res->sr_status = status;
5651 print_overflow_msg(__func__, xdr);
5654 #else /* CONFIG_NFS_V4_1 */
5656 #endif /* CONFIG_NFS_V4_1 */
5659 #if defined(CONFIG_NFS_V4_1)
5661 * TODO: Need to handle case when EOF != true;
5663 static int decode_getdevicelist(struct xdr_stream *xdr,
5664 struct pnfs_devicelist *res)
5668 nfs4_verifier verftemp;
5670 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5674 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5678 /* TODO: Skip cookie for now */
5682 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5684 res->num_devs = be32_to_cpup(p);
5686 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5688 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
5689 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
5690 __func__, res->num_devs);
5694 p = xdr_inline_decode(xdr,
5695 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5698 for (i = 0; i < res->num_devs; i++)
5699 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5700 NFS4_DEVICEID4_SIZE);
5701 res->eof = be32_to_cpup(p);
5704 print_overflow_msg(__func__, xdr);
5708 static int decode_getdeviceinfo(struct xdr_stream *xdr,
5709 struct pnfs_device *pdev)
5715 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5717 if (status == -ETOOSMALL) {
5718 p = xdr_inline_decode(xdr, 4);
5721 pdev->mincount = be32_to_cpup(p);
5722 dprintk("%s: Min count too small. mincnt = %u\n",
5723 __func__, pdev->mincount);
5728 p = xdr_inline_decode(xdr, 8);
5731 type = be32_to_cpup(p++);
5732 if (type != pdev->layout_type) {
5733 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5734 __func__, pdev->layout_type, type);
5738 * Get the length of the opaque device_addr4. xdr_read_pages places
5739 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5740 * and places the remaining xdr data in xdr_buf->tail
5742 pdev->mincount = be32_to_cpup(p);
5743 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5746 /* Parse notification bitmap, verifying that it is zero. */
5747 p = xdr_inline_decode(xdr, 4);
5750 len = be32_to_cpup(p);
5754 p = xdr_inline_decode(xdr, 4 * len);
5757 for (i = 0; i < len; i++, p++) {
5758 if (be32_to_cpup(p)) {
5759 dprintk("%s: notifications not supported\n",
5767 print_overflow_msg(__func__, xdr);
5771 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5772 struct nfs4_layoutget_res *res)
5779 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5782 p = xdr_inline_decode(xdr, 4);
5785 res->return_on_close = be32_to_cpup(p);
5786 decode_stateid(xdr, &res->stateid);
5787 p = xdr_inline_decode(xdr, 4);
5790 layout_count = be32_to_cpup(p);
5791 if (!layout_count) {
5792 dprintk("%s: server responded with empty layout array\n",
5797 p = xdr_inline_decode(xdr, 28);
5800 p = xdr_decode_hyper(p, &res->range.offset);
5801 p = xdr_decode_hyper(p, &res->range.length);
5802 res->range.iomode = be32_to_cpup(p++);
5803 res->type = be32_to_cpup(p++);
5804 res->layoutp->len = be32_to_cpup(p);
5806 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5808 (unsigned long)res->range.offset,
5809 (unsigned long)res->range.length,
5814 recvd = xdr_read_pages(xdr, res->layoutp->len);
5815 if (res->layoutp->len > recvd) {
5816 dprintk("NFS: server cheating in layoutget reply: "
5817 "layout len %u > recvd %u\n",
5818 res->layoutp->len, recvd);
5822 if (layout_count > 1) {
5823 /* We only handle a length one array at the moment. Any
5824 * further entries are just ignored. Note that this means
5825 * the client may see a response that is less than the
5826 * minimum it requested.
5828 dprintk("%s: server responded with %d layouts, dropping tail\n",
5829 __func__, layout_count);
5834 print_overflow_msg(__func__, xdr);
5838 static int decode_layoutreturn(struct xdr_stream *xdr,
5839 struct nfs4_layoutreturn_res *res)
5844 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5847 p = xdr_inline_decode(xdr, 4);
5850 res->lrs_present = be32_to_cpup(p);
5851 if (res->lrs_present)
5852 status = decode_stateid(xdr, &res->stateid);
5855 print_overflow_msg(__func__, xdr);
5859 static int decode_layoutcommit(struct xdr_stream *xdr,
5860 struct rpc_rqst *req,
5861 struct nfs4_layoutcommit_res *res)
5867 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
5868 res->status = status;
5872 p = xdr_inline_decode(xdr, 4);
5875 sizechanged = be32_to_cpup(p);
5878 /* throw away new size */
5879 p = xdr_inline_decode(xdr, 8);
5885 print_overflow_msg(__func__, xdr);
5889 static int decode_test_stateid(struct xdr_stream *xdr,
5890 struct nfs41_test_stateid_res *res)
5896 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5900 p = xdr_inline_decode(xdr, 4);
5903 num_res = be32_to_cpup(p++);
5907 p = xdr_inline_decode(xdr, 4);
5910 res->status = be32_to_cpup(p++);
5914 print_overflow_msg(__func__, xdr);
5919 static int decode_free_stateid(struct xdr_stream *xdr,
5920 struct nfs41_free_stateid_res *res)
5925 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5929 p = xdr_inline_decode(xdr, 4);
5932 res->status = be32_to_cpup(p++);
5935 print_overflow_msg(__func__, xdr);
5938 #endif /* CONFIG_NFS_V4_1 */
5941 * END OF "GENERIC" DECODE ROUTINES.
5945 * Decode OPEN_DOWNGRADE response
5947 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5948 struct xdr_stream *xdr,
5949 struct nfs_closeres *res)
5951 struct compound_hdr hdr;
5954 status = decode_compound_hdr(xdr, &hdr);
5957 status = decode_sequence(xdr, &res->seq_res, rqstp);
5960 status = decode_putfh(xdr);
5963 status = decode_open_downgrade(xdr, res);
5966 decode_getfattr(xdr, res->fattr, res->server);
5972 * Decode ACCESS response
5974 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5975 struct nfs4_accessres *res)
5977 struct compound_hdr hdr;
5980 status = decode_compound_hdr(xdr, &hdr);
5983 status = decode_sequence(xdr, &res->seq_res, rqstp);
5986 status = decode_putfh(xdr);
5989 status = decode_access(xdr, &res->supported, &res->access);
5992 decode_getfattr(xdr, res->fattr, res->server);
5998 * Decode LOOKUP response
6000 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6001 struct nfs4_lookup_res *res)
6003 struct compound_hdr hdr;
6006 status = decode_compound_hdr(xdr, &hdr);
6009 status = decode_sequence(xdr, &res->seq_res, rqstp);
6012 status = decode_putfh(xdr);
6015 status = decode_lookup(xdr);
6018 status = decode_getfh(xdr, res->fh);
6021 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6027 * Decode LOOKUP_ROOT response
6029 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6030 struct xdr_stream *xdr,
6031 struct nfs4_lookup_res *res)
6033 struct compound_hdr hdr;
6036 status = decode_compound_hdr(xdr, &hdr);
6039 status = decode_sequence(xdr, &res->seq_res, rqstp);
6042 status = decode_putrootfh(xdr);
6045 status = decode_getfh(xdr, res->fh);
6047 status = decode_getfattr_label(xdr, res->fattr,
6048 res->label, res->server);
6054 * Decode REMOVE response
6056 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6057 struct nfs_removeres *res)
6059 struct compound_hdr hdr;
6062 status = decode_compound_hdr(xdr, &hdr);
6065 status = decode_sequence(xdr, &res->seq_res, rqstp);
6068 status = decode_putfh(xdr);
6071 status = decode_remove(xdr, &res->cinfo);
6077 * Decode RENAME response
6079 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6080 struct nfs_renameres *res)
6082 struct compound_hdr hdr;
6085 status = decode_compound_hdr(xdr, &hdr);
6088 status = decode_sequence(xdr, &res->seq_res, rqstp);
6091 status = decode_putfh(xdr);
6094 status = decode_savefh(xdr);
6097 status = decode_putfh(xdr);
6100 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
6106 * Decode LINK response
6108 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6109 struct nfs4_link_res *res)
6111 struct compound_hdr hdr;
6114 status = decode_compound_hdr(xdr, &hdr);
6117 status = decode_sequence(xdr, &res->seq_res, rqstp);
6120 status = decode_putfh(xdr);
6123 status = decode_savefh(xdr);
6126 status = decode_putfh(xdr);
6129 status = decode_link(xdr, &res->cinfo);
6133 * Note order: OP_LINK leaves the directory as the current
6136 status = decode_restorefh(xdr);
6139 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6145 * Decode CREATE response
6147 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6148 struct nfs4_create_res *res)
6150 struct compound_hdr hdr;
6153 status = decode_compound_hdr(xdr, &hdr);
6156 status = decode_sequence(xdr, &res->seq_res, rqstp);
6159 status = decode_putfh(xdr);
6162 status = decode_create(xdr, &res->dir_cinfo);
6165 status = decode_getfh(xdr, res->fh);
6168 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6174 * Decode SYMLINK response
6176 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6177 struct nfs4_create_res *res)
6179 return nfs4_xdr_dec_create(rqstp, xdr, res);
6183 * Decode GETATTR response
6185 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6186 struct nfs4_getattr_res *res)
6188 struct compound_hdr hdr;
6191 status = decode_compound_hdr(xdr, &hdr);
6194 status = decode_sequence(xdr, &res->seq_res, rqstp);
6197 status = decode_putfh(xdr);
6200 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6206 * Encode an SETACL request
6208 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6209 struct nfs_setaclargs *args)
6211 struct compound_hdr hdr = {
6212 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
6215 encode_compound_hdr(xdr, req, &hdr);
6216 encode_sequence(xdr, &args->seq_args, &hdr);
6217 encode_putfh(xdr, args->fh, &hdr);
6218 encode_setacl(xdr, args, &hdr);
6223 * Decode SETACL response
6226 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6227 struct nfs_setaclres *res)
6229 struct compound_hdr hdr;
6232 status = decode_compound_hdr(xdr, &hdr);
6235 status = decode_sequence(xdr, &res->seq_res, rqstp);
6238 status = decode_putfh(xdr);
6241 status = decode_setattr(xdr);
6247 * Decode GETACL response
6250 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6251 struct nfs_getaclres *res)
6253 struct compound_hdr hdr;
6256 if (res->acl_scratch != NULL) {
6257 void *p = page_address(res->acl_scratch);
6258 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6260 status = decode_compound_hdr(xdr, &hdr);
6263 status = decode_sequence(xdr, &res->seq_res, rqstp);
6266 status = decode_putfh(xdr);
6269 status = decode_getacl(xdr, rqstp, res);
6276 * Decode CLOSE response
6278 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6279 struct nfs_closeres *res)
6281 struct compound_hdr hdr;
6284 status = decode_compound_hdr(xdr, &hdr);
6287 status = decode_sequence(xdr, &res->seq_res, rqstp);
6290 status = decode_putfh(xdr);
6293 status = decode_close(xdr, res);
6297 * Note: Server may do delete on close for this file
6298 * in which case the getattr call will fail with
6299 * an ESTALE error. Shouldn't be a problem,
6300 * though, since fattr->valid will remain unset.
6302 decode_getfattr(xdr, res->fattr, res->server);
6308 * Decode OPEN response
6310 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6311 struct nfs_openres *res)
6313 struct compound_hdr hdr;
6316 status = decode_compound_hdr(xdr, &hdr);
6319 status = decode_sequence(xdr, &res->seq_res, rqstp);
6322 status = decode_putfh(xdr);
6325 status = decode_open(xdr, res);
6328 status = decode_getfh(xdr, &res->fh);
6331 if (res->access_request)
6332 decode_access(xdr, &res->access_supported, &res->access_result);
6333 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
6339 * Decode OPEN_CONFIRM response
6341 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6342 struct xdr_stream *xdr,
6343 struct nfs_open_confirmres *res)
6345 struct compound_hdr hdr;
6348 status = decode_compound_hdr(xdr, &hdr);
6351 status = decode_putfh(xdr);
6354 status = decode_open_confirm(xdr, res);
6360 * Decode OPEN response
6362 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6363 struct xdr_stream *xdr,
6364 struct nfs_openres *res)
6366 struct compound_hdr hdr;
6369 status = decode_compound_hdr(xdr, &hdr);
6372 status = decode_sequence(xdr, &res->seq_res, rqstp);
6375 status = decode_putfh(xdr);
6378 status = decode_open(xdr, res);
6381 if (res->access_request)
6382 decode_access(xdr, &res->access_supported, &res->access_result);
6383 decode_getfattr(xdr, res->f_attr, res->server);
6389 * Decode SETATTR response
6391 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6392 struct xdr_stream *xdr,
6393 struct nfs_setattrres *res)
6395 struct compound_hdr hdr;
6398 status = decode_compound_hdr(xdr, &hdr);
6401 status = decode_sequence(xdr, &res->seq_res, rqstp);
6404 status = decode_putfh(xdr);
6407 status = decode_setattr(xdr);
6410 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
6416 * Decode LOCK response
6418 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6419 struct nfs_lock_res *res)
6421 struct compound_hdr hdr;
6424 status = decode_compound_hdr(xdr, &hdr);
6427 status = decode_sequence(xdr, &res->seq_res, rqstp);
6430 status = decode_putfh(xdr);
6433 status = decode_lock(xdr, res);
6439 * Decode LOCKT response
6441 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6442 struct nfs_lockt_res *res)
6444 struct compound_hdr hdr;
6447 status = decode_compound_hdr(xdr, &hdr);
6450 status = decode_sequence(xdr, &res->seq_res, rqstp);
6453 status = decode_putfh(xdr);
6456 status = decode_lockt(xdr, res);
6462 * Decode LOCKU response
6464 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6465 struct nfs_locku_res *res)
6467 struct compound_hdr hdr;
6470 status = decode_compound_hdr(xdr, &hdr);
6473 status = decode_sequence(xdr, &res->seq_res, rqstp);
6476 status = decode_putfh(xdr);
6479 status = decode_locku(xdr, res);
6484 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6485 struct xdr_stream *xdr, void *dummy)
6487 struct compound_hdr hdr;
6490 status = decode_compound_hdr(xdr, &hdr);
6492 status = decode_release_lockowner(xdr);
6497 * Decode READLINK response
6499 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6500 struct xdr_stream *xdr,
6501 struct nfs4_readlink_res *res)
6503 struct compound_hdr hdr;
6506 status = decode_compound_hdr(xdr, &hdr);
6509 status = decode_sequence(xdr, &res->seq_res, rqstp);
6512 status = decode_putfh(xdr);
6515 status = decode_readlink(xdr, rqstp);
6521 * Decode READDIR response
6523 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6524 struct nfs4_readdir_res *res)
6526 struct compound_hdr hdr;
6529 status = decode_compound_hdr(xdr, &hdr);
6532 status = decode_sequence(xdr, &res->seq_res, rqstp);
6535 status = decode_putfh(xdr);
6538 status = decode_readdir(xdr, rqstp, res);
6544 * Decode Read response
6546 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6547 struct nfs_readres *res)
6549 struct compound_hdr hdr;
6552 status = decode_compound_hdr(xdr, &hdr);
6555 status = decode_sequence(xdr, &res->seq_res, rqstp);
6558 status = decode_putfh(xdr);
6561 status = decode_read(xdr, rqstp, res);
6563 status = res->count;
6569 * Decode WRITE response
6571 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6572 struct nfs_writeres *res)
6574 struct compound_hdr hdr;
6577 status = decode_compound_hdr(xdr, &hdr);
6580 status = decode_sequence(xdr, &res->seq_res, rqstp);
6583 status = decode_putfh(xdr);
6586 status = decode_write(xdr, res);
6590 decode_getfattr(xdr, res->fattr, res->server);
6592 status = res->count;
6598 * Decode COMMIT response
6600 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6601 struct nfs_commitres *res)
6603 struct compound_hdr hdr;
6606 status = decode_compound_hdr(xdr, &hdr);
6609 status = decode_sequence(xdr, &res->seq_res, rqstp);
6612 status = decode_putfh(xdr);
6615 status = decode_commit(xdr, res);
6621 * Decode FSINFO response
6623 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
6624 struct nfs4_fsinfo_res *res)
6626 struct compound_hdr hdr;
6629 status = decode_compound_hdr(xdr, &hdr);
6631 status = decode_sequence(xdr, &res->seq_res, req);
6633 status = decode_putfh(xdr);
6635 status = decode_fsinfo(xdr, res->fsinfo);
6640 * Decode PATHCONF response
6642 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
6643 struct nfs4_pathconf_res *res)
6645 struct compound_hdr hdr;
6648 status = decode_compound_hdr(xdr, &hdr);
6650 status = decode_sequence(xdr, &res->seq_res, req);
6652 status = decode_putfh(xdr);
6654 status = decode_pathconf(xdr, res->pathconf);
6659 * Decode STATFS response
6661 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
6662 struct nfs4_statfs_res *res)
6664 struct compound_hdr hdr;
6667 status = decode_compound_hdr(xdr, &hdr);
6669 status = decode_sequence(xdr, &res->seq_res, req);
6671 status = decode_putfh(xdr);
6673 status = decode_statfs(xdr, res->fsstat);
6678 * Decode GETATTR_BITMAP response
6680 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6681 struct xdr_stream *xdr,
6682 struct nfs4_server_caps_res *res)
6684 struct compound_hdr hdr;
6687 status = decode_compound_hdr(xdr, &hdr);
6690 status = decode_sequence(xdr, &res->seq_res, req);
6693 status = decode_putfh(xdr);
6696 status = decode_server_caps(xdr, res);
6702 * Decode RENEW response
6704 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6707 struct compound_hdr hdr;
6710 status = decode_compound_hdr(xdr, &hdr);
6712 status = decode_renew(xdr);
6717 * Decode SETCLIENTID response
6719 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6720 struct xdr_stream *xdr,
6721 struct nfs4_setclientid_res *res)
6723 struct compound_hdr hdr;
6726 status = decode_compound_hdr(xdr, &hdr);
6728 status = decode_setclientid(xdr, res);
6733 * Decode SETCLIENTID_CONFIRM response
6735 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6736 struct xdr_stream *xdr)
6738 struct compound_hdr hdr;
6741 status = decode_compound_hdr(xdr, &hdr);
6743 status = decode_setclientid_confirm(xdr);
6748 * Decode DELEGRETURN response
6750 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6751 struct xdr_stream *xdr,
6752 struct nfs4_delegreturnres *res)
6754 struct compound_hdr hdr;
6757 status = decode_compound_hdr(xdr, &hdr);
6760 status = decode_sequence(xdr, &res->seq_res, rqstp);
6763 status = decode_putfh(xdr);
6766 status = decode_getfattr(xdr, res->fattr, res->server);
6769 status = decode_delegreturn(xdr);
6775 * Decode FS_LOCATIONS response
6777 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6778 struct xdr_stream *xdr,
6779 struct nfs4_fs_locations_res *res)
6781 struct compound_hdr hdr;
6784 status = decode_compound_hdr(xdr, &hdr);
6787 status = decode_sequence(xdr, &res->seq_res, req);
6790 status = decode_putfh(xdr);
6793 status = decode_lookup(xdr);
6796 xdr_enter_page(xdr, PAGE_SIZE);
6797 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6798 NULL, res->fs_locations,
6799 NULL, res->fs_locations->server);
6805 * Decode SECINFO response
6807 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6808 struct xdr_stream *xdr,
6809 struct nfs4_secinfo_res *res)
6811 struct compound_hdr hdr;
6814 status = decode_compound_hdr(xdr, &hdr);
6817 status = decode_sequence(xdr, &res->seq_res, rqstp);
6820 status = decode_putfh(xdr);
6823 status = decode_secinfo(xdr, res);
6828 #if defined(CONFIG_NFS_V4_1)
6830 * Decode BIND_CONN_TO_SESSION response
6832 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6833 struct xdr_stream *xdr,
6836 struct compound_hdr hdr;
6839 status = decode_compound_hdr(xdr, &hdr);
6841 status = decode_bind_conn_to_session(xdr, res);
6846 * Decode EXCHANGE_ID response
6848 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6849 struct xdr_stream *xdr,
6852 struct compound_hdr hdr;
6855 status = decode_compound_hdr(xdr, &hdr);
6857 status = decode_exchange_id(xdr, res);
6862 * Decode CREATE_SESSION response
6864 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6865 struct xdr_stream *xdr,
6866 struct nfs41_create_session_res *res)
6868 struct compound_hdr hdr;
6871 status = decode_compound_hdr(xdr, &hdr);
6873 status = decode_create_session(xdr, res);
6878 * Decode DESTROY_SESSION response
6880 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6881 struct xdr_stream *xdr,
6884 struct compound_hdr hdr;
6887 status = decode_compound_hdr(xdr, &hdr);
6889 status = decode_destroy_session(xdr, res);
6894 * Decode DESTROY_CLIENTID response
6896 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
6897 struct xdr_stream *xdr,
6900 struct compound_hdr hdr;
6903 status = decode_compound_hdr(xdr, &hdr);
6905 status = decode_destroy_clientid(xdr, res);
6910 * Decode SEQUENCE response
6912 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6913 struct xdr_stream *xdr,
6914 struct nfs4_sequence_res *res)
6916 struct compound_hdr hdr;
6919 status = decode_compound_hdr(xdr, &hdr);
6921 status = decode_sequence(xdr, res, rqstp);
6926 * Decode GET_LEASE_TIME response
6928 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6929 struct xdr_stream *xdr,
6930 struct nfs4_get_lease_time_res *res)
6932 struct compound_hdr hdr;
6935 status = decode_compound_hdr(xdr, &hdr);
6937 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
6939 status = decode_putrootfh(xdr);
6941 status = decode_fsinfo(xdr, res->lr_fsinfo);
6946 * Decode RECLAIM_COMPLETE response
6948 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6949 struct xdr_stream *xdr,
6950 struct nfs41_reclaim_complete_res *res)
6952 struct compound_hdr hdr;
6955 status = decode_compound_hdr(xdr, &hdr);
6957 status = decode_sequence(xdr, &res->seq_res, rqstp);
6959 status = decode_reclaim_complete(xdr, (void *)NULL);
6964 * Decode GETDEVICELIST response
6966 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6967 struct xdr_stream *xdr,
6968 struct nfs4_getdevicelist_res *res)
6970 struct compound_hdr hdr;
6973 dprintk("encoding getdevicelist!\n");
6975 status = decode_compound_hdr(xdr, &hdr);
6978 status = decode_sequence(xdr, &res->seq_res, rqstp);
6981 status = decode_putfh(xdr);
6984 status = decode_getdevicelist(xdr, res->devlist);
6990 * Decode GETDEVINFO response
6992 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6993 struct xdr_stream *xdr,
6994 struct nfs4_getdeviceinfo_res *res)
6996 struct compound_hdr hdr;
6999 status = decode_compound_hdr(xdr, &hdr);
7002 status = decode_sequence(xdr, &res->seq_res, rqstp);
7005 status = decode_getdeviceinfo(xdr, res->pdev);
7011 * Decode LAYOUTGET response
7013 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7014 struct xdr_stream *xdr,
7015 struct nfs4_layoutget_res *res)
7017 struct compound_hdr hdr;
7020 status = decode_compound_hdr(xdr, &hdr);
7023 status = decode_sequence(xdr, &res->seq_res, rqstp);
7026 status = decode_putfh(xdr);
7029 status = decode_layoutget(xdr, rqstp, res);
7035 * Decode LAYOUTRETURN response
7037 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7038 struct xdr_stream *xdr,
7039 struct nfs4_layoutreturn_res *res)
7041 struct compound_hdr hdr;
7044 status = decode_compound_hdr(xdr, &hdr);
7047 status = decode_sequence(xdr, &res->seq_res, rqstp);
7050 status = decode_putfh(xdr);
7053 status = decode_layoutreturn(xdr, res);
7059 * Decode LAYOUTCOMMIT response
7061 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7062 struct xdr_stream *xdr,
7063 struct nfs4_layoutcommit_res *res)
7065 struct compound_hdr hdr;
7068 status = decode_compound_hdr(xdr, &hdr);
7071 status = decode_sequence(xdr, &res->seq_res, rqstp);
7074 status = decode_putfh(xdr);
7077 status = decode_layoutcommit(xdr, rqstp, res);
7080 decode_getfattr(xdr, res->fattr, res->server);
7086 * Decode SECINFO_NO_NAME response
7088 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7089 struct xdr_stream *xdr,
7090 struct nfs4_secinfo_res *res)
7092 struct compound_hdr hdr;
7095 status = decode_compound_hdr(xdr, &hdr);
7098 status = decode_sequence(xdr, &res->seq_res, rqstp);
7101 status = decode_putrootfh(xdr);
7104 status = decode_secinfo_no_name(xdr, res);
7110 * Decode TEST_STATEID response
7112 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7113 struct xdr_stream *xdr,
7114 struct nfs41_test_stateid_res *res)
7116 struct compound_hdr hdr;
7119 status = decode_compound_hdr(xdr, &hdr);
7122 status = decode_sequence(xdr, &res->seq_res, rqstp);
7125 status = decode_test_stateid(xdr, res);
7131 * Decode FREE_STATEID response
7133 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7134 struct xdr_stream *xdr,
7135 struct nfs41_free_stateid_res *res)
7137 struct compound_hdr hdr;
7140 status = decode_compound_hdr(xdr, &hdr);
7143 status = decode_sequence(xdr, &res->seq_res, rqstp);
7146 status = decode_free_stateid(xdr, res);
7150 #endif /* CONFIG_NFS_V4_1 */
7153 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7154 * the local page cache.
7155 * @xdr: XDR stream where entry resides
7156 * @entry: buffer to fill in with entry data
7157 * @plus: boolean indicating whether this should be a readdirplus entry
7159 * Returns zero if successful, otherwise a negative errno value is
7162 * This function is not invoked during READDIR reply decoding, but
7163 * rather whenever an application invokes the getdents(2) system call
7164 * on a directory already in our cache.
7166 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7170 uint32_t bitmap[3] = {0};
7172 __be32 *p = xdr_inline_decode(xdr, 4);
7175 if (*p == xdr_zero) {
7176 p = xdr_inline_decode(xdr, 4);
7185 p = xdr_inline_decode(xdr, 12);
7188 entry->prev_cookie = entry->cookie;
7189 p = xdr_decode_hyper(p, &entry->cookie);
7190 entry->len = be32_to_cpup(p);
7192 p = xdr_inline_decode(xdr, entry->len);
7195 entry->name = (const char *) p;
7198 * In case the server doesn't return an inode number,
7199 * we fake one here. (We don't use inode number 0,
7200 * since glibc seems to choke on it...)
7203 entry->fattr->valid = 0;
7205 if (decode_attr_bitmap(xdr, bitmap) < 0)
7208 if (decode_attr_length(xdr, &len, &savep) < 0)
7211 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7212 NULL, entry->label, entry->server) < 0)
7214 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7215 entry->ino = entry->fattr->mounted_on_fileid;
7216 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7217 entry->ino = entry->fattr->fileid;
7219 entry->d_type = DT_UNKNOWN;
7220 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7221 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7226 print_overflow_msg(__func__, xdr);
7231 * We need to translate between nfs status return values and
7232 * the local errno values which may not be the same.
7239 { NFS4ERR_PERM, -EPERM },
7240 { NFS4ERR_NOENT, -ENOENT },
7241 { NFS4ERR_IO, -errno_NFSERR_IO},
7242 { NFS4ERR_NXIO, -ENXIO },
7243 { NFS4ERR_ACCESS, -EACCES },
7244 { NFS4ERR_EXIST, -EEXIST },
7245 { NFS4ERR_XDEV, -EXDEV },
7246 { NFS4ERR_NOTDIR, -ENOTDIR },
7247 { NFS4ERR_ISDIR, -EISDIR },
7248 { NFS4ERR_INVAL, -EINVAL },
7249 { NFS4ERR_FBIG, -EFBIG },
7250 { NFS4ERR_NOSPC, -ENOSPC },
7251 { NFS4ERR_ROFS, -EROFS },
7252 { NFS4ERR_MLINK, -EMLINK },
7253 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7254 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7255 { NFS4ERR_DQUOT, -EDQUOT },
7256 { NFS4ERR_STALE, -ESTALE },
7257 { NFS4ERR_BADHANDLE, -EBADHANDLE },
7258 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7259 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7260 { NFS4ERR_TOOSMALL, -ETOOSMALL },
7261 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
7262 { NFS4ERR_BADTYPE, -EBADTYPE },
7263 { NFS4ERR_LOCKED, -EAGAIN },
7264 { NFS4ERR_SYMLINK, -ELOOP },
7265 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7266 { NFS4ERR_DEADLOCK, -EDEADLK },
7271 * Convert an NFS error code to a local one.
7272 * This one is used jointly by NFSv2 and NFSv3.
7275 nfs4_stat_to_errno(int stat)
7278 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7279 if (nfs_errtbl[i].stat == stat)
7280 return nfs_errtbl[i].errno;
7282 if (stat <= 10000 || stat > 10100) {
7283 /* The server is looney tunes. */
7286 /* If we cannot translate the error, the recovery routines should
7288 * Note: remaining NFSv4 error codes have values > 10000, so should
7289 * not conflict with native Linux error codes.
7294 #define PROC(proc, argtype, restype) \
7295 [NFSPROC4_CLNT_##proc] = { \
7296 .p_proc = NFSPROC4_COMPOUND, \
7297 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
7298 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
7299 .p_arglen = NFS4_##argtype##_sz, \
7300 .p_replen = NFS4_##restype##_sz, \
7301 .p_statidx = NFSPROC4_CLNT_##proc, \
7305 struct rpc_procinfo nfs4_procedures[] = {
7306 PROC(READ, enc_read, dec_read),
7307 PROC(WRITE, enc_write, dec_write),
7308 PROC(COMMIT, enc_commit, dec_commit),
7309 PROC(OPEN, enc_open, dec_open),
7310 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7311 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7312 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7313 PROC(CLOSE, enc_close, dec_close),
7314 PROC(SETATTR, enc_setattr, dec_setattr),
7315 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7316 PROC(RENEW, enc_renew, dec_renew),
7317 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7318 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7319 PROC(LOCK, enc_lock, dec_lock),
7320 PROC(LOCKT, enc_lockt, dec_lockt),
7321 PROC(LOCKU, enc_locku, dec_locku),
7322 PROC(ACCESS, enc_access, dec_access),
7323 PROC(GETATTR, enc_getattr, dec_getattr),
7324 PROC(LOOKUP, enc_lookup, dec_lookup),
7325 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7326 PROC(REMOVE, enc_remove, dec_remove),
7327 PROC(RENAME, enc_rename, dec_rename),
7328 PROC(LINK, enc_link, dec_link),
7329 PROC(SYMLINK, enc_symlink, dec_symlink),
7330 PROC(CREATE, enc_create, dec_create),
7331 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7332 PROC(STATFS, enc_statfs, dec_statfs),
7333 PROC(READLINK, enc_readlink, dec_readlink),
7334 PROC(READDIR, enc_readdir, dec_readdir),
7335 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7336 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7337 PROC(GETACL, enc_getacl, dec_getacl),
7338 PROC(SETACL, enc_setacl, dec_setacl),
7339 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7340 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
7341 PROC(SECINFO, enc_secinfo, dec_secinfo),
7342 #if defined(CONFIG_NFS_V4_1)
7343 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7344 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7345 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7346 PROC(SEQUENCE, enc_sequence, dec_sequence),
7347 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7348 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7349 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7350 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
7351 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
7352 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
7353 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
7354 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
7355 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
7356 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
7357 PROC(BIND_CONN_TO_SESSION,
7358 enc_bind_conn_to_session, dec_bind_conn_to_session),
7359 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
7360 #endif /* CONFIG_NFS_V4_1 */
7363 const struct rpc_version nfs_version4 = {
7365 .nrprocs = ARRAY_SIZE(nfs4_procedures),
7366 .procs = nfs4_procedures