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/slab.h>
42 #include <linux/utsname.h>
43 #include <linux/errno.h>
44 #include <linux/string.h>
46 #include <linux/pagemap.h>
47 #include <linux/proc_fs.h>
48 #include <linux/kdev_t.h>
49 #include <linux/sunrpc/clnt.h>
50 #include <linux/nfs.h>
51 #include <linux/nfs4.h>
52 #include <linux/nfs_fs.h>
53 #include <linux/nfs_idmap.h>
56 #define NFSDBG_FACILITY NFSDBG_XDR
58 /* Mapping from NFS error code to "errno" error code. */
59 #define errno_NFSERR_IO EIO
61 static int nfs4_stat_to_errno(int);
63 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
65 #define NFS4_MAXTAGLEN 20
67 #define NFS4_MAXTAGLEN 0
70 /* lock,open owner id:
71 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
73 #define open_owner_id_maxsz (1 + 4)
74 #define lock_owner_id_maxsz (1 + 4)
75 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
76 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
77 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
78 #define op_encode_hdr_maxsz (1)
79 #define op_decode_hdr_maxsz (2)
80 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
81 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
82 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
83 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
84 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
86 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
87 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
88 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
89 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
90 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
91 ((3+NFS4_FHSIZE) >> 2))
92 #define nfs4_fattr_bitmap_maxsz 3
93 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
94 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
95 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
96 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
97 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
98 /* This is based on getfattr, which uses the most attributes: */
99 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
100 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
101 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
102 nfs4_fattr_value_maxsz)
103 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
104 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
109 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
110 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
111 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
112 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
113 #define encode_fsinfo_maxsz (encode_getattr_maxsz)
114 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
115 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
116 #define decode_renew_maxsz (op_decode_hdr_maxsz)
117 #define encode_setclientid_maxsz \
118 (op_encode_hdr_maxsz + \
119 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
120 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
122 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
123 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
125 #define decode_setclientid_maxsz \
126 (op_decode_hdr_maxsz + \
128 1024) /* large value for CLID_INUSE */
129 #define encode_setclientid_confirm_maxsz \
130 (op_encode_hdr_maxsz + \
131 3 + (NFS4_VERIFIER_SIZE >> 2))
132 #define decode_setclientid_confirm_maxsz \
133 (op_decode_hdr_maxsz)
134 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
135 #define decode_lookup_maxsz (op_decode_hdr_maxsz)
136 #define encode_share_access_maxsz \
138 #define encode_createmode_maxsz (1 + encode_attrs_maxsz)
139 #define encode_opentype_maxsz (1 + encode_createmode_maxsz)
140 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
141 #define encode_open_maxsz (op_encode_hdr_maxsz + \
142 2 + encode_share_access_maxsz + 2 + \
143 open_owner_id_maxsz + \
144 encode_opentype_maxsz + \
145 encode_claim_null_maxsz)
146 #define decode_ace_maxsz (3 + nfs4_owner_maxsz)
147 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
149 #define decode_change_info_maxsz (5)
150 #define decode_open_maxsz (op_decode_hdr_maxsz + \
151 decode_stateid_maxsz + \
152 decode_change_info_maxsz + 1 + \
153 nfs4_fattr_bitmap_maxsz + \
154 decode_delegation_maxsz)
155 #define encode_open_confirm_maxsz \
156 (op_encode_hdr_maxsz + \
157 encode_stateid_maxsz + 1)
158 #define decode_open_confirm_maxsz \
159 (op_decode_hdr_maxsz + \
160 decode_stateid_maxsz)
161 #define encode_open_downgrade_maxsz \
162 (op_encode_hdr_maxsz + \
163 encode_stateid_maxsz + 1 + \
164 encode_share_access_maxsz)
165 #define decode_open_downgrade_maxsz \
166 (op_decode_hdr_maxsz + \
167 decode_stateid_maxsz)
168 #define encode_close_maxsz (op_encode_hdr_maxsz + \
169 1 + encode_stateid_maxsz)
170 #define decode_close_maxsz (op_decode_hdr_maxsz + \
171 decode_stateid_maxsz)
172 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \
173 encode_stateid_maxsz + \
175 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \
176 nfs4_fattr_bitmap_maxsz)
177 #define encode_read_maxsz (op_encode_hdr_maxsz + \
178 encode_stateid_maxsz + 3)
179 #define decode_read_maxsz (op_decode_hdr_maxsz + 2)
180 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \
181 2 + encode_verifier_maxsz + 5)
182 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \
183 decode_verifier_maxsz)
184 #define encode_readlink_maxsz (op_encode_hdr_maxsz)
185 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
186 #define encode_write_maxsz (op_encode_hdr_maxsz + \
187 encode_stateid_maxsz + 4)
188 #define decode_write_maxsz (op_decode_hdr_maxsz + \
189 2 + decode_verifier_maxsz)
190 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
191 #define decode_commit_maxsz (op_decode_hdr_maxsz + \
192 decode_verifier_maxsz)
193 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
195 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
197 #define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
198 #define encode_link_maxsz (op_encode_hdr_maxsz + \
200 #define decode_link_maxsz (op_decode_hdr_maxsz + 5)
201 #define encode_lock_maxsz (op_encode_hdr_maxsz + \
203 1 + encode_stateid_maxsz + 8)
204 #define decode_lock_denied_maxsz \
205 (8 + decode_lockowner_maxsz)
206 #define decode_lock_maxsz (op_decode_hdr_maxsz + \
207 decode_lock_denied_maxsz)
208 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 12)
209 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \
210 decode_lock_denied_maxsz)
211 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
212 encode_stateid_maxsz + \
214 #define decode_locku_maxsz (op_decode_hdr_maxsz + \
215 decode_stateid_maxsz)
216 #define encode_access_maxsz (op_encode_hdr_maxsz + 1)
217 #define decode_access_maxsz (op_decode_hdr_maxsz + 2)
218 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
219 1 + nfs4_name_maxsz + \
222 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
223 #define encode_create_maxsz (op_encode_hdr_maxsz + \
224 1 + 2 + nfs4_name_maxsz + \
226 #define decode_create_maxsz (op_decode_hdr_maxsz + \
227 decode_change_info_maxsz + \
228 nfs4_fattr_bitmap_maxsz)
229 #define encode_statfs_maxsz (encode_getattr_maxsz)
230 #define decode_statfs_maxsz (decode_getattr_maxsz)
231 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
232 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
233 #define encode_getacl_maxsz (encode_getattr_maxsz)
234 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \
235 nfs4_fattr_bitmap_maxsz + 1)
236 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \
237 encode_stateid_maxsz + 3)
238 #define decode_setacl_maxsz (decode_setattr_maxsz)
239 #define encode_fs_locations_maxsz \
240 (encode_getattr_maxsz)
241 #define decode_fs_locations_maxsz \
243 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
244 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
245 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
246 encode_putfh_maxsz + \
248 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
249 decode_putfh_maxsz + \
251 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
252 encode_putfh_maxsz + \
253 encode_readlink_maxsz)
254 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
255 decode_putfh_maxsz + \
256 decode_readlink_maxsz)
257 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
258 encode_putfh_maxsz + \
259 encode_readdir_maxsz)
260 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
261 decode_putfh_maxsz + \
262 decode_readdir_maxsz)
263 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
264 encode_putfh_maxsz + \
265 encode_write_maxsz + \
266 encode_getattr_maxsz)
267 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
268 decode_putfh_maxsz + \
269 decode_write_maxsz + \
270 decode_getattr_maxsz)
271 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
272 encode_putfh_maxsz + \
273 encode_commit_maxsz + \
274 encode_getattr_maxsz)
275 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
276 decode_putfh_maxsz + \
277 decode_commit_maxsz + \
278 decode_getattr_maxsz)
279 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
280 encode_putfh_maxsz + \
281 encode_savefh_maxsz + \
282 encode_open_maxsz + \
283 encode_getfh_maxsz + \
284 encode_getattr_maxsz + \
285 encode_restorefh_maxsz + \
286 encode_getattr_maxsz)
287 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
288 decode_putfh_maxsz + \
289 decode_savefh_maxsz + \
290 decode_open_maxsz + \
291 decode_getfh_maxsz + \
292 decode_getattr_maxsz + \
293 decode_restorefh_maxsz + \
294 decode_getattr_maxsz)
295 #define NFS4_enc_open_confirm_sz \
296 (compound_encode_hdr_maxsz + \
297 encode_putfh_maxsz + \
298 encode_open_confirm_maxsz)
299 #define NFS4_dec_open_confirm_sz \
300 (compound_decode_hdr_maxsz + \
301 decode_putfh_maxsz + \
302 decode_open_confirm_maxsz)
303 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
304 encode_putfh_maxsz + \
305 encode_open_maxsz + \
306 encode_getattr_maxsz)
307 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
308 decode_putfh_maxsz + \
309 decode_open_maxsz + \
310 decode_getattr_maxsz)
311 #define NFS4_enc_open_downgrade_sz \
312 (compound_encode_hdr_maxsz + \
313 encode_putfh_maxsz + \
314 encode_open_downgrade_maxsz + \
315 encode_getattr_maxsz)
316 #define NFS4_dec_open_downgrade_sz \
317 (compound_decode_hdr_maxsz + \
318 decode_putfh_maxsz + \
319 decode_open_downgrade_maxsz + \
320 decode_getattr_maxsz)
321 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
322 encode_putfh_maxsz + \
323 encode_close_maxsz + \
324 encode_getattr_maxsz)
325 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
326 decode_putfh_maxsz + \
327 decode_close_maxsz + \
328 decode_getattr_maxsz)
329 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
330 encode_putfh_maxsz + \
331 encode_setattr_maxsz + \
332 encode_getattr_maxsz)
333 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
334 decode_putfh_maxsz + \
335 decode_setattr_maxsz + \
336 decode_getattr_maxsz)
337 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
338 encode_putfh_maxsz + \
340 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
341 decode_putfh_maxsz + \
343 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
345 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
347 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
348 encode_setclientid_maxsz)
349 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
350 decode_setclientid_maxsz)
351 #define NFS4_enc_setclientid_confirm_sz \
352 (compound_encode_hdr_maxsz + \
353 encode_setclientid_confirm_maxsz + \
354 encode_putrootfh_maxsz + \
356 #define NFS4_dec_setclientid_confirm_sz \
357 (compound_decode_hdr_maxsz + \
358 decode_setclientid_confirm_maxsz + \
359 decode_putrootfh_maxsz + \
361 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
362 encode_putfh_maxsz + \
364 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
365 decode_putfh_maxsz + \
367 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
368 encode_putfh_maxsz + \
370 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
371 decode_putfh_maxsz + \
373 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
374 encode_putfh_maxsz + \
376 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
377 decode_putfh_maxsz + \
379 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
380 encode_putfh_maxsz + \
381 encode_access_maxsz + \
382 encode_getattr_maxsz)
383 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
384 decode_putfh_maxsz + \
385 decode_access_maxsz + \
386 decode_getattr_maxsz)
387 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
388 encode_putfh_maxsz + \
389 encode_getattr_maxsz)
390 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
391 decode_putfh_maxsz + \
392 decode_getattr_maxsz)
393 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
394 encode_putfh_maxsz + \
395 encode_lookup_maxsz + \
396 encode_getattr_maxsz + \
398 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
399 decode_putfh_maxsz + \
400 decode_lookup_maxsz + \
401 decode_getattr_maxsz + \
403 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
404 encode_putrootfh_maxsz + \
405 encode_getattr_maxsz + \
407 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
408 decode_putrootfh_maxsz + \
409 decode_getattr_maxsz + \
411 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
412 encode_putfh_maxsz + \
413 encode_remove_maxsz + \
414 encode_getattr_maxsz)
415 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
416 decode_putfh_maxsz + \
417 op_decode_hdr_maxsz + 5 + \
418 decode_getattr_maxsz)
419 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
420 encode_putfh_maxsz + \
421 encode_savefh_maxsz + \
422 encode_putfh_maxsz + \
423 encode_rename_maxsz + \
424 encode_getattr_maxsz + \
425 encode_restorefh_maxsz + \
426 encode_getattr_maxsz)
427 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
428 decode_putfh_maxsz + \
429 decode_savefh_maxsz + \
430 decode_putfh_maxsz + \
431 decode_rename_maxsz + \
432 decode_getattr_maxsz + \
433 decode_restorefh_maxsz + \
434 decode_getattr_maxsz)
435 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
436 encode_putfh_maxsz + \
437 encode_savefh_maxsz + \
438 encode_putfh_maxsz + \
439 encode_link_maxsz + \
440 decode_getattr_maxsz + \
441 encode_restorefh_maxsz + \
442 decode_getattr_maxsz)
443 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
444 decode_putfh_maxsz + \
445 decode_savefh_maxsz + \
446 decode_putfh_maxsz + \
447 decode_link_maxsz + \
448 decode_getattr_maxsz + \
449 decode_restorefh_maxsz + \
450 decode_getattr_maxsz)
451 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
452 encode_putfh_maxsz + \
453 encode_symlink_maxsz + \
454 encode_getattr_maxsz + \
456 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
457 decode_putfh_maxsz + \
458 decode_symlink_maxsz + \
459 decode_getattr_maxsz + \
461 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
462 encode_putfh_maxsz + \
463 encode_savefh_maxsz + \
464 encode_create_maxsz + \
465 encode_getfh_maxsz + \
466 encode_getattr_maxsz + \
467 encode_restorefh_maxsz + \
468 encode_getattr_maxsz)
469 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
470 decode_putfh_maxsz + \
471 decode_savefh_maxsz + \
472 decode_create_maxsz + \
473 decode_getfh_maxsz + \
474 decode_getattr_maxsz + \
475 decode_restorefh_maxsz + \
476 decode_getattr_maxsz)
477 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
478 encode_putfh_maxsz + \
479 encode_getattr_maxsz)
480 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
481 decode_putfh_maxsz + \
482 decode_getattr_maxsz)
483 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
484 encode_putfh_maxsz + \
486 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
487 decode_putfh_maxsz + \
489 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
490 encode_putfh_maxsz + \
491 encode_getattr_maxsz)
492 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
493 decode_putfh_maxsz + \
494 decode_getattr_maxsz)
495 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
496 encode_putfh_maxsz + \
497 encode_delegreturn_maxsz + \
498 encode_getattr_maxsz)
499 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
500 decode_delegreturn_maxsz + \
501 decode_getattr_maxsz)
502 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
503 encode_putfh_maxsz + \
505 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
506 decode_putfh_maxsz + \
508 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
509 encode_putfh_maxsz + \
511 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
512 decode_putfh_maxsz + \
514 #define NFS4_enc_fs_locations_sz \
515 (compound_encode_hdr_maxsz + \
516 encode_putfh_maxsz + \
517 encode_lookup_maxsz + \
518 encode_fs_locations_maxsz)
519 #define NFS4_dec_fs_locations_sz \
520 (compound_decode_hdr_maxsz + \
521 decode_putfh_maxsz + \
522 decode_lookup_maxsz + \
523 decode_fs_locations_maxsz)
525 static const umode_t nfs_type2fmt[] = {
532 [NF4SOCK] = S_IFSOCK,
538 struct compound_hdr {
547 * START OF "GENERIC" ENCODE ROUTINES.
548 * These may look a little ugly since they are imported from a "generic"
549 * set of XDR encode/decode routines which are intended to be shared by
550 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
552 * If the pain of reading these is too great, it should be a straightforward
553 * task to translate them into Linux-specific versions which are more
554 * consistent with the style used in NFSv2/v3...
556 #define WRITE32(n) *p++ = htonl(n)
557 #define WRITE64(n) do { \
558 *p++ = htonl((uint32_t)((n) >> 32)); \
559 *p++ = htonl((uint32_t)(n)); \
561 #define WRITEMEM(ptr,nbytes) do { \
562 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
565 #define RESERVE_SPACE(nbytes) do { \
566 p = xdr_reserve_space(xdr, nbytes); \
570 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
574 p = xdr_reserve_space(xdr, 4 + len);
576 xdr_encode_opaque(p, str, len);
579 static void encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
583 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
584 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
585 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
586 WRITE32(hdr->taglen);
587 WRITEMEM(hdr->tag, hdr->taglen);
588 WRITE32(NFS4_MINOR_VERSION);
593 static void encode_nops(struct compound_hdr *hdr)
595 *hdr->nops_p = htonl(hdr->nops);
598 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
602 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
604 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
607 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
609 char owner_name[IDMAP_NAMESZ];
610 char owner_group[IDMAP_NAMESZ];
611 int owner_namelen = 0;
612 int owner_grouplen = 0;
620 * We reserve enough space to write the entire attribute buffer at once.
621 * In the worst-case, this would be
622 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
623 * = 36 bytes, plus any contribution from variable-length fields
624 * such as owner/group.
629 if (iap->ia_valid & ATTR_SIZE)
631 if (iap->ia_valid & ATTR_MODE)
633 if (iap->ia_valid & ATTR_UID) {
634 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
635 if (owner_namelen < 0) {
636 dprintk("nfs: couldn't resolve uid %d to string\n",
639 strcpy(owner_name, "nobody");
640 owner_namelen = sizeof("nobody") - 1;
643 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
645 if (iap->ia_valid & ATTR_GID) {
646 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
647 if (owner_grouplen < 0) {
648 dprintk("nfs: couldn't resolve gid %d to string\n",
650 strcpy(owner_group, "nobody");
651 owner_grouplen = sizeof("nobody") - 1;
654 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
656 if (iap->ia_valid & ATTR_ATIME_SET)
658 else if (iap->ia_valid & ATTR_ATIME)
660 if (iap->ia_valid & ATTR_MTIME_SET)
662 else if (iap->ia_valid & ATTR_MTIME)
667 * We write the bitmap length now, but leave the bitmap and the attribute
668 * buffer length to be backfilled at the end of this routine.
674 if (iap->ia_valid & ATTR_SIZE) {
675 bmval0 |= FATTR4_WORD0_SIZE;
676 WRITE64(iap->ia_size);
678 if (iap->ia_valid & ATTR_MODE) {
679 bmval1 |= FATTR4_WORD1_MODE;
680 WRITE32(iap->ia_mode & S_IALLUGO);
682 if (iap->ia_valid & ATTR_UID) {
683 bmval1 |= FATTR4_WORD1_OWNER;
684 WRITE32(owner_namelen);
685 WRITEMEM(owner_name, owner_namelen);
687 if (iap->ia_valid & ATTR_GID) {
688 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
689 WRITE32(owner_grouplen);
690 WRITEMEM(owner_group, owner_grouplen);
692 if (iap->ia_valid & ATTR_ATIME_SET) {
693 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
694 WRITE32(NFS4_SET_TO_CLIENT_TIME);
696 WRITE32(iap->ia_mtime.tv_sec);
697 WRITE32(iap->ia_mtime.tv_nsec);
699 else if (iap->ia_valid & ATTR_ATIME) {
700 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
701 WRITE32(NFS4_SET_TO_SERVER_TIME);
703 if (iap->ia_valid & ATTR_MTIME_SET) {
704 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
705 WRITE32(NFS4_SET_TO_CLIENT_TIME);
707 WRITE32(iap->ia_mtime.tv_sec);
708 WRITE32(iap->ia_mtime.tv_nsec);
710 else if (iap->ia_valid & ATTR_MTIME) {
711 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
712 WRITE32(NFS4_SET_TO_SERVER_TIME);
716 * Now we backfill the bitmap and the attribute buffer length.
718 if (len != ((char *)p - (char *)q) + 4) {
719 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
720 len, ((char *)p - (char *)q) + 4);
723 len = (char *)p - (char *)q - 12;
724 *q++ = htonl(bmval0);
725 *q++ = htonl(bmval1);
731 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
741 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
745 RESERVE_SPACE(8+NFS4_STATEID_SIZE);
747 WRITE32(arg->seqid->sequence->counter);
748 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
752 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
758 WRITE64(args->offset);
759 WRITE32(args->count);
763 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
769 WRITE32(create->ftype);
771 switch (create->ftype) {
774 WRITE32(create->u.symlink.len);
775 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
778 case NF4BLK: case NF4CHR:
780 WRITE32(create->u.device.specdata1);
781 WRITE32(create->u.device.specdata2);
788 RESERVE_SPACE(4 + create->name->len);
789 WRITE32(create->name->len);
790 WRITEMEM(create->name->name, create->name->len);
793 encode_attrs(xdr, create->attrs, create->server);
796 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
807 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
819 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
821 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
822 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
825 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
827 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
828 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
831 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
833 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
834 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
837 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
846 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
850 RESERVE_SPACE(8 + name->len);
853 WRITEMEM(name->name, name->len);
857 static inline int nfs4_lock_type(struct file_lock *fl, int block)
859 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
860 return block ? NFS4_READW_LT : NFS4_READ_LT;
861 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
864 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
866 if (fl->fl_end == OFFSET_MAX)
868 return fl->fl_end - fl->fl_start + 1;
872 * opcode,type,reclaim,offset,length,new_lock_owner = 32
873 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
875 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
881 WRITE32(nfs4_lock_type(args->fl, args->block));
882 WRITE32(args->reclaim);
883 WRITE64(args->fl->fl_start);
884 WRITE64(nfs4_lock_length(args->fl));
885 WRITE32(args->new_lock_owner);
886 if (args->new_lock_owner){
887 RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
888 WRITE32(args->open_seqid->sequence->counter);
889 WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
890 WRITE32(args->lock_seqid->sequence->counter);
891 WRITE64(args->lock_owner.clientid);
893 WRITEMEM("lock id:", 8);
894 WRITE64(args->lock_owner.id);
897 RESERVE_SPACE(NFS4_STATEID_SIZE+4);
898 WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
899 WRITE32(args->lock_seqid->sequence->counter);
904 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
910 WRITE32(nfs4_lock_type(args->fl, 0));
911 WRITE64(args->fl->fl_start);
912 WRITE64(nfs4_lock_length(args->fl));
913 WRITE64(args->lock_owner.clientid);
915 WRITEMEM("lock id:", 8);
916 WRITE64(args->lock_owner.id);
920 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
924 RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
926 WRITE32(nfs4_lock_type(args->fl, 0));
927 WRITE32(args->seqid->sequence->counter);
928 WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
929 WRITE64(args->fl->fl_start);
930 WRITE64(nfs4_lock_length(args->fl));
934 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
939 RESERVE_SPACE(8 + len);
942 WRITEMEM(name->name, len);
946 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
951 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
953 WRITE32(NFS4_SHARE_ACCESS_READ);
956 WRITE32(NFS4_SHARE_ACCESS_WRITE);
958 case FMODE_READ|FMODE_WRITE:
959 WRITE32(NFS4_SHARE_ACCESS_BOTH);
964 WRITE32(0); /* for linux, share_deny = 0 always */
967 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
971 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
976 WRITE32(arg->seqid->sequence->counter);
977 encode_share_access(xdr, arg->fmode);
979 WRITE64(arg->clientid);
981 WRITEMEM("open id:", 8);
985 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
990 switch(arg->open_flags & O_EXCL) {
992 WRITE32(NFS4_CREATE_UNCHECKED);
993 encode_attrs(xdr, arg->u.attrs, arg->server);
996 WRITE32(NFS4_CREATE_EXCLUSIVE);
997 encode_nfs4_verifier(xdr, &arg->u.verifier);
1001 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1006 switch (arg->open_flags & O_CREAT) {
1008 WRITE32(NFS4_OPEN_NOCREATE);
1011 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1012 WRITE32(NFS4_OPEN_CREATE);
1013 encode_createmode(xdr, arg);
1017 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1022 switch (delegation_type) {
1024 WRITE32(NFS4_OPEN_DELEGATE_NONE);
1027 WRITE32(NFS4_OPEN_DELEGATE_READ);
1029 case FMODE_WRITE|FMODE_READ:
1030 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
1037 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1042 WRITE32(NFS4_OPEN_CLAIM_NULL);
1043 encode_string(xdr, name->len, name->name);
1046 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1051 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
1052 encode_delegation_type(xdr, type);
1055 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1059 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1060 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1061 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1062 encode_string(xdr, name->len, name->name);
1065 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1067 encode_openhdr(xdr, arg);
1068 encode_opentype(xdr, arg);
1069 switch (arg->claim) {
1070 case NFS4_OPEN_CLAIM_NULL:
1071 encode_claim_null(xdr, arg->name);
1073 case NFS4_OPEN_CLAIM_PREVIOUS:
1074 encode_claim_previous(xdr, arg->u.delegation_type);
1076 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1077 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1085 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1089 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1090 WRITE32(OP_OPEN_CONFIRM);
1091 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1092 WRITE32(arg->seqid->sequence->counter);
1096 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1100 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1101 WRITE32(OP_OPEN_DOWNGRADE);
1102 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1103 WRITE32(arg->seqid->sequence->counter);
1104 encode_share_access(xdr, arg->fmode);
1109 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1114 RESERVE_SPACE(8 + len);
1117 WRITEMEM(fh->data, len);
1121 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1126 WRITE32(OP_PUTROOTFH);
1130 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1132 nfs4_stateid stateid;
1135 RESERVE_SPACE(NFS4_STATEID_SIZE);
1136 if (ctx->state != NULL) {
1137 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1138 WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
1140 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1143 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1150 encode_stateid(xdr, args->context);
1153 WRITE64(args->offset);
1154 WRITE32(args->count);
1158 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1160 uint32_t attrs[2] = {
1161 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1162 FATTR4_WORD1_MOUNTED_ON_FILEID,
1166 RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
1167 WRITE32(OP_READDIR);
1168 WRITE64(readdir->cookie);
1169 WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
1170 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1171 WRITE32(readdir->count);
1173 /* Switch to mounted_on_fileid if the server supports it */
1174 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1175 attrs[0] &= ~FATTR4_WORD0_FILEID;
1177 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1178 WRITE32(attrs[0] & readdir->bitmask[0]);
1179 WRITE32(attrs[1] & readdir->bitmask[1]);
1181 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1183 (unsigned long long)readdir->cookie,
1184 ((u32 *)readdir->verifier.data)[0],
1185 ((u32 *)readdir->verifier.data)[1],
1186 attrs[0] & readdir->bitmask[0],
1187 attrs[1] & readdir->bitmask[1]);
1190 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1195 WRITE32(OP_READLINK);
1199 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1203 RESERVE_SPACE(8 + name->len);
1206 WRITEMEM(name->name, name->len);
1210 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1214 RESERVE_SPACE(8 + oldname->len);
1216 WRITE32(oldname->len);
1217 WRITEMEM(oldname->name, oldname->len);
1219 RESERVE_SPACE(4 + newname->len);
1220 WRITE32(newname->len);
1221 WRITEMEM(newname->name, newname->len);
1225 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1231 WRITE64(client_stateid->cl_clientid);
1236 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1241 WRITE32(OP_RESTOREFH);
1246 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1250 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1251 WRITE32(OP_SETATTR);
1252 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1255 WRITE32(FATTR4_WORD0_ACL);
1256 if (arg->acl_len % 4)
1259 WRITE32(arg->acl_len);
1260 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1266 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1275 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1279 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1280 WRITE32(OP_SETATTR);
1281 WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
1283 encode_attrs(xdr, arg->iap, server);
1286 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1290 RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
1291 WRITE32(OP_SETCLIENTID);
1292 WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1294 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1296 WRITE32(setclientid->sc_prog);
1297 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1298 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1300 WRITE32(setclientid->sc_cb_ident);
1304 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
1308 RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
1309 WRITE32(OP_SETCLIENTID_CONFIRM);
1310 WRITE64(client_state->cl_clientid);
1311 WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1315 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1322 encode_stateid(xdr, args->context);
1325 WRITE64(args->offset);
1326 WRITE32(args->stable);
1327 WRITE32(args->count);
1329 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1333 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1337 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1339 WRITE32(OP_DELEGRETURN);
1340 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1344 * END OF "GENERIC" ENCODE ROUTINES.
1348 * Encode an ACCESS request
1350 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1352 struct xdr_stream xdr;
1353 struct compound_hdr hdr = {
1357 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1358 encode_compound_hdr(&xdr, &hdr);
1359 encode_putfh(&xdr, args->fh, &hdr);
1360 encode_access(&xdr, args->access, &hdr);
1361 encode_getfattr(&xdr, args->bitmask, &hdr);
1367 * Encode LOOKUP request
1369 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1371 struct xdr_stream xdr;
1372 struct compound_hdr hdr = {
1376 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1377 encode_compound_hdr(&xdr, &hdr);
1378 encode_putfh(&xdr, args->dir_fh, &hdr);
1379 encode_lookup(&xdr, args->name, &hdr);
1380 encode_getfh(&xdr, &hdr);
1381 encode_getfattr(&xdr, args->bitmask, &hdr);
1387 * Encode LOOKUP_ROOT request
1389 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1391 struct xdr_stream xdr;
1392 struct compound_hdr hdr = {
1396 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1397 encode_compound_hdr(&xdr, &hdr);
1398 encode_putrootfh(&xdr, &hdr);
1399 encode_getfh(&xdr, &hdr);
1400 encode_getfattr(&xdr, args->bitmask, &hdr);
1406 * Encode REMOVE request
1408 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1410 struct xdr_stream xdr;
1411 struct compound_hdr hdr = {
1415 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1416 encode_compound_hdr(&xdr, &hdr);
1417 encode_putfh(&xdr, args->fh, &hdr);
1418 encode_remove(&xdr, &args->name, &hdr);
1419 encode_getfattr(&xdr, args->bitmask, &hdr);
1425 * Encode RENAME request
1427 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1429 struct xdr_stream xdr;
1430 struct compound_hdr hdr = {
1434 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1435 encode_compound_hdr(&xdr, &hdr);
1436 encode_putfh(&xdr, args->old_dir, &hdr);
1437 encode_savefh(&xdr, &hdr);
1438 encode_putfh(&xdr, args->new_dir, &hdr);
1439 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1440 encode_getfattr(&xdr, args->bitmask, &hdr);
1441 encode_restorefh(&xdr, &hdr);
1442 encode_getfattr(&xdr, args->bitmask, &hdr);
1448 * Encode LINK request
1450 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1452 struct xdr_stream xdr;
1453 struct compound_hdr hdr = {
1457 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1458 encode_compound_hdr(&xdr, &hdr);
1459 encode_putfh(&xdr, args->fh, &hdr);
1460 encode_savefh(&xdr, &hdr);
1461 encode_putfh(&xdr, args->dir_fh, &hdr);
1462 encode_link(&xdr, args->name, &hdr);
1463 encode_getfattr(&xdr, args->bitmask, &hdr);
1464 encode_restorefh(&xdr, &hdr);
1465 encode_getfattr(&xdr, args->bitmask, &hdr);
1471 * Encode CREATE request
1473 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1475 struct xdr_stream xdr;
1476 struct compound_hdr hdr = {
1480 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1481 encode_compound_hdr(&xdr, &hdr);
1482 encode_putfh(&xdr, args->dir_fh, &hdr);
1483 encode_savefh(&xdr, &hdr);
1484 encode_create(&xdr, args, &hdr);
1485 encode_getfh(&xdr, &hdr);
1486 encode_getfattr(&xdr, args->bitmask, &hdr);
1487 encode_restorefh(&xdr, &hdr);
1488 encode_getfattr(&xdr, args->bitmask, &hdr);
1494 * Encode SYMLINK request
1496 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1498 return nfs4_xdr_enc_create(req, p, args);
1502 * Encode GETATTR request
1504 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1506 struct xdr_stream xdr;
1507 struct compound_hdr hdr = {
1511 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1512 encode_compound_hdr(&xdr, &hdr);
1513 encode_putfh(&xdr, args->fh, &hdr);
1514 encode_getfattr(&xdr, args->bitmask, &hdr);
1520 * Encode a CLOSE request
1522 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1524 struct xdr_stream xdr;
1525 struct compound_hdr hdr = {
1529 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1530 encode_compound_hdr(&xdr, &hdr);
1531 encode_putfh(&xdr, args->fh, &hdr);
1532 encode_close(&xdr, args, &hdr);
1533 encode_getfattr(&xdr, args->bitmask, &hdr);
1539 * Encode an OPEN request
1541 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1543 struct xdr_stream xdr;
1544 struct compound_hdr hdr = {
1548 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1549 encode_compound_hdr(&xdr, &hdr);
1550 encode_putfh(&xdr, args->fh, &hdr);
1551 encode_savefh(&xdr, &hdr);
1552 encode_open(&xdr, args, &hdr);
1553 encode_getfh(&xdr, &hdr);
1554 encode_getfattr(&xdr, args->bitmask, &hdr);
1555 encode_restorefh(&xdr, &hdr);
1556 encode_getfattr(&xdr, args->bitmask, &hdr);
1562 * Encode an OPEN_CONFIRM request
1564 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1566 struct xdr_stream xdr;
1567 struct compound_hdr hdr = {
1571 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1572 encode_compound_hdr(&xdr, &hdr);
1573 encode_putfh(&xdr, args->fh, &hdr);
1574 encode_open_confirm(&xdr, args, &hdr);
1580 * Encode an OPEN request with no attributes.
1582 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1584 struct xdr_stream xdr;
1585 struct compound_hdr hdr = {
1589 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1590 encode_compound_hdr(&xdr, &hdr);
1591 encode_putfh(&xdr, args->fh, &hdr);
1592 encode_open(&xdr, args, &hdr);
1593 encode_getfattr(&xdr, args->bitmask, &hdr);
1599 * Encode an OPEN_DOWNGRADE request
1601 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1603 struct xdr_stream xdr;
1604 struct compound_hdr hdr = {
1608 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1609 encode_compound_hdr(&xdr, &hdr);
1610 encode_putfh(&xdr, args->fh, &hdr);
1611 encode_open_downgrade(&xdr, args, &hdr);
1612 encode_getfattr(&xdr, args->bitmask, &hdr);
1618 * Encode a LOCK request
1620 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1622 struct xdr_stream xdr;
1623 struct compound_hdr hdr = {
1627 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1628 encode_compound_hdr(&xdr, &hdr);
1629 encode_putfh(&xdr, args->fh, &hdr);
1630 encode_lock(&xdr, args, &hdr);
1636 * Encode a LOCKT request
1638 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1640 struct xdr_stream xdr;
1641 struct compound_hdr hdr = {
1645 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1646 encode_compound_hdr(&xdr, &hdr);
1647 encode_putfh(&xdr, args->fh, &hdr);
1648 encode_lockt(&xdr, args, &hdr);
1654 * Encode a LOCKU request
1656 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1658 struct xdr_stream xdr;
1659 struct compound_hdr hdr = {
1663 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1664 encode_compound_hdr(&xdr, &hdr);
1665 encode_putfh(&xdr, args->fh, &hdr);
1666 encode_locku(&xdr, args, &hdr);
1672 * Encode a READLINK request
1674 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
1676 struct xdr_stream xdr;
1677 struct compound_hdr hdr = {
1680 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1681 unsigned int replen;
1683 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1684 encode_compound_hdr(&xdr, &hdr);
1685 encode_putfh(&xdr, args->fh, &hdr);
1686 encode_readlink(&xdr, args, req, &hdr);
1688 /* set up reply kvec
1689 * toplevel_status + taglen + rescount + OP_PUTFH + status
1690 * + OP_READLINK + status + string length = 8
1692 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readlink_sz) << 2;
1693 xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
1694 args->pgbase, args->pglen);
1700 * Encode a READDIR request
1702 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
1704 struct xdr_stream xdr;
1705 struct compound_hdr hdr = {
1708 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1711 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1712 encode_compound_hdr(&xdr, &hdr);
1713 encode_putfh(&xdr, args->fh, &hdr);
1714 encode_readdir(&xdr, args, req, &hdr);
1716 /* set up reply kvec
1717 * toplevel_status + taglen + rescount + OP_PUTFH + status
1718 * + OP_READDIR + status + verifer(2) = 9
1720 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readdir_sz) << 2;
1721 xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
1722 args->pgbase, args->count);
1723 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1724 __func__, replen, args->pages,
1725 args->pgbase, args->count);
1731 * Encode a READ request
1733 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
1735 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1736 struct xdr_stream xdr;
1737 struct compound_hdr hdr = {
1742 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1743 encode_compound_hdr(&xdr, &hdr);
1744 encode_putfh(&xdr, args->fh, &hdr);
1745 encode_read(&xdr, args, &hdr);
1747 /* set up reply kvec
1748 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1749 * + OP_READ + status + eof + datalen = 9
1751 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1752 xdr_inline_pages(&req->rq_rcv_buf, replen,
1753 args->pages, args->pgbase, args->count);
1754 req->rq_rcv_buf.flags |= XDRBUF_READ;
1760 * Encode an SETATTR request
1762 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
1764 struct xdr_stream xdr;
1765 struct compound_hdr hdr = {
1769 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1770 encode_compound_hdr(&xdr, &hdr);
1771 encode_putfh(&xdr, args->fh, &hdr);
1772 encode_setattr(&xdr, args, args->server, &hdr);
1773 encode_getfattr(&xdr, args->bitmask, &hdr);
1779 * Encode a GETACL request
1782 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
1783 struct nfs_getaclargs *args)
1785 struct xdr_stream xdr;
1786 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1787 struct compound_hdr hdr = {
1792 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1793 encode_compound_hdr(&xdr, &hdr);
1794 encode_putfh(&xdr, args->fh, &hdr);
1795 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
1797 /* set up reply buffer: */
1798 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1799 xdr_inline_pages(&req->rq_rcv_buf, replen,
1800 args->acl_pages, args->acl_pgbase, args->acl_len);
1806 * Encode a WRITE request
1808 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1810 struct xdr_stream xdr;
1811 struct compound_hdr hdr = {
1815 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1816 encode_compound_hdr(&xdr, &hdr);
1817 encode_putfh(&xdr, args->fh, &hdr);
1818 encode_write(&xdr, args, &hdr);
1819 req->rq_snd_buf.flags |= XDRBUF_WRITE;
1820 encode_getfattr(&xdr, args->bitmask, &hdr);
1828 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1830 struct xdr_stream xdr;
1831 struct compound_hdr hdr = {
1835 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1836 encode_compound_hdr(&xdr, &hdr);
1837 encode_putfh(&xdr, args->fh, &hdr);
1838 encode_commit(&xdr, args, &hdr);
1839 encode_getfattr(&xdr, args->bitmask, &hdr);
1847 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
1849 struct xdr_stream xdr;
1850 struct compound_hdr hdr = {
1854 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1855 encode_compound_hdr(&xdr, &hdr);
1856 encode_putfh(&xdr, args->fh, &hdr);
1857 encode_fsinfo(&xdr, args->bitmask, &hdr);
1863 * a PATHCONF request
1865 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
1867 struct xdr_stream xdr;
1868 struct compound_hdr hdr = {
1872 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1873 encode_compound_hdr(&xdr, &hdr);
1874 encode_putfh(&xdr, args->fh, &hdr);
1875 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
1884 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
1886 struct xdr_stream xdr;
1887 struct compound_hdr hdr = {
1891 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1892 encode_compound_hdr(&xdr, &hdr);
1893 encode_putfh(&xdr, args->fh, &hdr);
1894 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
1895 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
1901 * GETATTR_BITMAP request
1903 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, const struct nfs_fh *fhandle)
1905 struct xdr_stream xdr;
1906 struct compound_hdr hdr = {
1910 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1911 encode_compound_hdr(&xdr, &hdr);
1912 encode_putfh(&xdr, fhandle, &hdr);
1913 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1914 FATTR4_WORD0_LINK_SUPPORT|
1915 FATTR4_WORD0_SYMLINK_SUPPORT|
1916 FATTR4_WORD0_ACLSUPPORT, &hdr);
1924 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1926 struct xdr_stream xdr;
1927 struct compound_hdr hdr = {
1931 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1932 encode_compound_hdr(&xdr, &hdr);
1933 encode_renew(&xdr, clp, &hdr);
1939 * a SETCLIENTID request
1941 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
1943 struct xdr_stream xdr;
1944 struct compound_hdr hdr = {
1948 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1949 encode_compound_hdr(&xdr, &hdr);
1950 encode_setclientid(&xdr, sc, &hdr);
1956 * a SETCLIENTID_CONFIRM request
1958 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1960 struct xdr_stream xdr;
1961 struct compound_hdr hdr = {
1964 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1966 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1967 encode_compound_hdr(&xdr, &hdr);
1968 encode_setclientid_confirm(&xdr, clp, &hdr);
1969 encode_putrootfh(&xdr, &hdr);
1970 encode_fsinfo(&xdr, lease_bitmap, &hdr);
1976 * DELEGRETURN request
1978 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
1980 struct xdr_stream xdr;
1981 struct compound_hdr hdr = {
1985 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1986 encode_compound_hdr(&xdr, &hdr);
1987 encode_putfh(&xdr, args->fhandle, &hdr);
1988 encode_delegreturn(&xdr, args->stateid, &hdr);
1989 encode_getfattr(&xdr, args->bitmask, &hdr);
1995 * Encode FS_LOCATIONS request
1997 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
1999 struct xdr_stream xdr;
2000 struct compound_hdr hdr = {
2003 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
2006 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2007 encode_compound_hdr(&xdr, &hdr);
2008 encode_putfh(&xdr, args->dir_fh, &hdr);
2009 encode_lookup(&xdr, args->name, &hdr);
2010 encode_fs_locations(&xdr, args->bitmask, &hdr);
2013 * toplevel_status + OP_PUTFH + status
2014 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2016 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2017 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2024 * START OF "GENERIC" DECODE ROUTINES.
2025 * These may look a little ugly since they are imported from a "generic"
2026 * set of XDR encode/decode routines which are intended to be shared by
2027 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2029 * If the pain of reading these is too great, it should be a straightforward
2030 * task to translate them into Linux-specific versions which are more
2031 * consistent with the style used in NFSv2/v3...
2033 #define READ32(x) (x) = ntohl(*p++)
2034 #define READ64(x) do { \
2035 (x) = (u64)ntohl(*p++) << 32; \
2036 (x) |= ntohl(*p++); \
2038 #define READTIME(x) do { \
2040 (x.tv_sec) = ntohl(*p++); \
2041 (x.tv_nsec) = ntohl(*p++); \
2043 #define COPYMEM(x,nbytes) do { \
2044 memcpy((x), p, nbytes); \
2045 p += XDR_QUADLEN(nbytes); \
2048 #define READ_BUF(nbytes) do { \
2049 p = xdr_inline_decode(xdr, nbytes); \
2050 if (unlikely(!p)) { \
2051 dprintk("nfs: %s: prematurely hit end of receive" \
2052 " buffer\n", __func__); \
2053 dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2054 __func__, xdr->p, nbytes, xdr->end); \
2059 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2066 *string = (char *)p;
2070 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2075 READ32(hdr->status);
2076 READ32(hdr->taglen);
2078 READ_BUF(hdr->taglen + 4);
2079 hdr->tag = (char *)p;
2080 p += XDR_QUADLEN(hdr->taglen);
2082 if (unlikely(hdr->nops < 1))
2083 return nfs4_stat_to_errno(hdr->status);
2087 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2095 if (opnum != expected) {
2096 dprintk("nfs: Server returned operation"
2097 " %d but we issued a request for %d\n",
2102 if (nfserr != NFS_OK)
2103 return nfs4_stat_to_errno(nfserr);
2108 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2111 unsigned int strlen;
2115 return decode_opaque_inline(xdr, &strlen, &str);
2118 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2126 bitmap[0] = bitmap[1] = 0;
2127 READ_BUF((bmlen << 2));
2136 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2146 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2148 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2149 decode_attr_bitmap(xdr, bitmask);
2150 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2152 bitmask[0] = bitmask[1] = 0;
2153 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2157 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2162 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2164 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2167 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2168 dprintk("%s: bad type %d\n", __func__, *type);
2171 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2173 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
2177 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2182 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2184 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2187 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2189 dprintk("%s: change attribute=%Lu\n", __func__,
2190 (unsigned long long)*change);
2194 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2199 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2201 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2204 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2206 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2210 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2215 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2217 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2220 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2222 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2226 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2231 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2233 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2236 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2238 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2242 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2248 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2250 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2252 READ64(fsid->major);
2253 READ64(fsid->minor);
2254 bitmap[0] &= ~FATTR4_WORD0_FSID;
2256 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2257 (unsigned long long)fsid->major,
2258 (unsigned long long)fsid->minor);
2262 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2267 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2269 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2272 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2274 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2278 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2282 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2283 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2285 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2288 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2290 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2294 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2299 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2301 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2304 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2306 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2310 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2315 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2317 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2320 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2322 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2326 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2332 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2334 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2337 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2339 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2343 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2349 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2351 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2354 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2356 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2360 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2366 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2368 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2371 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2373 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2377 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2388 path->ncomponents = 0;
2389 while (path->ncomponents < n) {
2390 struct nfs4_string *component = &path->components[path->ncomponents];
2391 status = decode_opaque_inline(xdr, &component->len, &component->data);
2392 if (unlikely(status != 0))
2394 if (path->ncomponents != n)
2396 dprintk("%s", component->data);
2397 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2398 path->ncomponents++;
2400 dprintk("cannot parse %d components in path\n", n);
2408 /* a root pathname is sent as a zero component4 */
2409 path->ncomponents = 1;
2410 path->components[0].len=0;
2411 path->components[0].data=NULL;
2412 dprintk("path /\n");
2415 dprintk(" status %d", status);
2420 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2426 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2429 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2431 dprintk("%s: fsroot ", __func__);
2432 status = decode_pathname(xdr, &res->fs_path);
2433 if (unlikely(status != 0))
2439 res->nlocations = 0;
2440 while (res->nlocations < n) {
2442 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2448 dprintk("%s: servers ", __func__);
2449 while (loc->nservers < m) {
2450 struct nfs4_string *server = &loc->servers[loc->nservers];
2451 status = decode_opaque_inline(xdr, &server->len, &server->data);
2452 if (unlikely(status != 0))
2454 dprintk("%s ", server->data);
2455 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2459 dprintk("%s: using first %u of %u servers "
2460 "returned for location %u\n",
2462 NFS4_FS_LOCATION_MAXSERVERS,
2463 m, res->nlocations);
2464 for (i = loc->nservers; i < m; i++) {
2467 status = decode_opaque_inline(xdr, &len, &data);
2468 if (unlikely(status != 0))
2473 status = decode_pathname(xdr, &loc->rootpath);
2474 if (unlikely(status != 0))
2476 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2480 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
2487 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2493 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2495 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2498 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2500 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
2504 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2510 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2512 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2515 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2517 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
2521 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2527 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2529 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2532 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2534 dprintk("%s: maxname=%u\n", __func__, *maxname);
2538 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2544 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2546 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2550 if (maxread > 0x7FFFFFFF)
2551 maxread = 0x7FFFFFFF;
2552 *res = (uint32_t)maxread;
2553 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2555 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
2559 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2565 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2567 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2571 if (maxwrite > 0x7FFFFFFF)
2572 maxwrite = 0x7FFFFFFF;
2573 *res = (uint32_t)maxwrite;
2574 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2576 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
2580 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
2586 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2588 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2591 *mode = tmp & ~S_IFMT;
2592 bitmap[1] &= ~FATTR4_WORD1_MODE;
2594 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
2598 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2603 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2605 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2608 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2610 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
2614 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
2620 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2622 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2626 if (len < XDR_MAX_NETOBJ) {
2627 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2628 dprintk("%s: nfs_map_name_to_uid failed!\n",
2631 dprintk("%s: name too long (%u)!\n",
2633 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2635 dprintk("%s: uid=%d\n", __func__, (int)*uid);
2639 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
2645 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2647 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2651 if (len < XDR_MAX_NETOBJ) {
2652 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2653 dprintk("%s: nfs_map_group_to_gid failed!\n",
2656 dprintk("%s: name too long (%u)!\n",
2658 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2660 dprintk("%s: gid=%d\n", __func__, (int)*gid);
2664 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2666 uint32_t major = 0, minor = 0;
2670 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2672 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2678 tmp = MKDEV(major, minor);
2679 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2681 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2683 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
2687 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2693 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2695 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2698 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2700 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
2704 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2710 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2712 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2715 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2717 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
2721 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2727 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2729 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2732 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2734 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
2738 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2743 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2745 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2748 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2750 dprintk("%s: space used=%Lu\n", __func__,
2751 (unsigned long long)*used);
2755 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2764 time->tv_sec = (time_t)sec;
2765 time->tv_nsec = (long)nsec;
2769 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2775 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2777 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2778 status = decode_attr_time(xdr, time);
2779 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2781 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
2785 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2791 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2793 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2794 status = decode_attr_time(xdr, time);
2795 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2797 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
2801 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2807 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2809 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2810 status = decode_attr_time(xdr, time);
2811 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2813 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
2817 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
2819 unsigned int attrwords = XDR_QUADLEN(attrlen);
2820 unsigned int nwords = xdr->p - savep;
2822 if (unlikely(attrwords != nwords)) {
2823 dprintk("%s: server returned incorrect attribute length: "
2827 (attrwords < nwords) ? '<' : '>',
2834 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2839 READ32(cinfo->atomic);
2840 READ64(cinfo->before);
2841 READ64(cinfo->after);
2845 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2851 status = decode_op_hdr(xdr, OP_ACCESS);
2857 access->supported = supp;
2858 access->access = acc;
2862 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2867 status = decode_op_hdr(xdr, OP_CLOSE);
2869 nfs_increment_open_seqid(status, res->seqid);
2872 READ_BUF(NFS4_STATEID_SIZE);
2873 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
2877 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2882 status = decode_op_hdr(xdr, OP_COMMIT);
2886 COPYMEM(res->verf->verifier, 8);
2890 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2896 status = decode_op_hdr(xdr, OP_CREATE);
2899 if ((status = decode_change_info(xdr, cinfo)))
2903 READ_BUF(bmlen << 2);
2907 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2910 uint32_t attrlen, bitmap[2] = {0};
2913 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2915 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2917 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2919 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2921 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2923 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2925 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2927 status = verify_attr_len(xdr, savep, attrlen);
2929 dprintk("%s: xdr returned %d!\n", __func__, -status);
2933 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2936 uint32_t attrlen, bitmap[2] = {0};
2939 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2941 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2943 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2946 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2948 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2950 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2952 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2954 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2956 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2959 status = verify_attr_len(xdr, savep, attrlen);
2961 dprintk("%s: xdr returned %d!\n", __func__, -status);
2965 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2968 uint32_t attrlen, bitmap[2] = {0};
2971 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2973 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2975 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2978 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2980 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2983 status = verify_attr_len(xdr, savep, attrlen);
2985 dprintk("%s: xdr returned %d!\n", __func__, -status);
2989 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2999 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3001 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3004 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3008 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3010 fattr->mode = nfs_type2fmt[type];
3012 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3014 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3016 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
3018 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3020 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3021 struct nfs4_fs_locations,
3024 if ((status = decode_attr_mode(xdr, bitmap, &fmode)) != 0)
3026 fattr->mode |= fmode;
3027 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3029 if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
3031 if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
3033 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3035 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3037 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3039 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3041 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3043 if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
3045 if (fattr->fileid == 0 && fileid != 0)
3046 fattr->fileid = fileid;
3047 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
3048 fattr->valid = NFS_ATTR_FATTR_V4;
3050 dprintk("%s: xdr returned %d\n", __func__, -status);
3055 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3058 uint32_t attrlen, bitmap[2];
3061 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3063 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3065 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3068 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3070 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3072 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3074 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3076 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3077 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3079 fsinfo->wtpref = fsinfo->wtmax;
3081 status = verify_attr_len(xdr, savep, attrlen);
3083 dprintk("%s: xdr returned %d!\n", __func__, -status);
3087 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3093 /* Zero handle first to allow comparisons */
3094 memset(fh, 0, sizeof(*fh));
3096 status = decode_op_hdr(xdr, OP_GETFH);
3102 if (len > NFS4_FHSIZE)
3106 COPYMEM(fh->data, len);
3110 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3114 status = decode_op_hdr(xdr, OP_LINK);
3117 return decode_change_info(xdr, cinfo);
3121 * We create the owner, so we know a proper owner.id length is 4.
3123 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3125 uint64_t offset, length, clientid;
3127 uint32_t namelen, type;
3134 fl->fl_start = (loff_t)offset;
3135 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3136 if (length == ~(uint64_t)0)
3137 fl->fl_end = OFFSET_MAX;
3138 fl->fl_type = F_WRLCK;
3140 fl->fl_type = F_RDLCK;
3146 return -NFS4ERR_DENIED;
3149 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3154 status = decode_op_hdr(xdr, OP_LOCK);
3158 READ_BUF(NFS4_STATEID_SIZE);
3159 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3160 } else if (status == -NFS4ERR_DENIED)
3161 status = decode_lock_denied(xdr, NULL);
3162 if (res->open_seqid != NULL)
3163 nfs_increment_open_seqid(status, res->open_seqid);
3164 nfs_increment_lock_seqid(status, res->lock_seqid);
3169 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3172 status = decode_op_hdr(xdr, OP_LOCKT);
3173 if (status == -NFS4ERR_DENIED)
3174 return decode_lock_denied(xdr, res->denied);
3178 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3183 status = decode_op_hdr(xdr, OP_LOCKU);
3185 nfs_increment_lock_seqid(status, res->seqid);
3187 READ_BUF(NFS4_STATEID_SIZE);
3188 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3193 static int decode_lookup(struct xdr_stream *xdr)
3195 return decode_op_hdr(xdr, OP_LOOKUP);
3198 /* This is too sick! */
3199 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3202 uint32_t limit_type, nblocks, blocksize;
3206 switch (limit_type) {
3213 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3218 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3221 uint32_t delegation_type;
3224 READ32(delegation_type);
3225 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3226 res->delegation_type = 0;
3229 READ_BUF(NFS4_STATEID_SIZE+4);
3230 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
3231 READ32(res->do_recall);
3233 switch (delegation_type) {
3234 case NFS4_OPEN_DELEGATE_READ:
3235 res->delegation_type = FMODE_READ;
3237 case NFS4_OPEN_DELEGATE_WRITE:
3238 res->delegation_type = FMODE_WRITE|FMODE_READ;
3239 if (decode_space_limit(xdr, &res->maxsize) < 0)
3242 return decode_ace(xdr, NULL, res->server->nfs_client);
3245 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3248 uint32_t savewords, bmlen, i;
3251 status = decode_op_hdr(xdr, OP_OPEN);
3253 nfs_increment_open_seqid(status, res->seqid);
3256 READ_BUF(NFS4_STATEID_SIZE);
3257 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3259 decode_change_info(xdr, &res->cinfo);
3262 READ32(res->rflags);
3267 READ_BUF(bmlen << 2);
3268 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3269 for (i = 0; i < savewords; ++i)
3270 READ32(res->attrset[i]);
3271 for (; i < NFS4_BITMAP_SIZE; i++)
3272 res->attrset[i] = 0;
3274 return decode_delegation(xdr, res);
3276 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
3280 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3285 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3287 nfs_increment_open_seqid(status, res->seqid);
3290 READ_BUF(NFS4_STATEID_SIZE);
3291 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3295 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3300 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3302 nfs_increment_open_seqid(status, res->seqid);
3305 READ_BUF(NFS4_STATEID_SIZE);
3306 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3310 static int decode_putfh(struct xdr_stream *xdr)
3312 return decode_op_hdr(xdr, OP_PUTFH);
3315 static int decode_putrootfh(struct xdr_stream *xdr)
3317 return decode_op_hdr(xdr, OP_PUTROOTFH);
3320 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3322 struct kvec *iov = req->rq_rcv_buf.head;
3324 uint32_t count, eof, recvd, hdrlen;
3327 status = decode_op_hdr(xdr, OP_READ);
3333 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3334 recvd = req->rq_rcv_buf.len - hdrlen;
3335 if (count > recvd) {
3336 dprintk("NFS: server cheating in read reply: "
3337 "count %u > recvd %u\n", count, recvd);
3341 xdr_read_pages(xdr, count);
3347 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3349 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3350 struct page *page = *rcvbuf->pages;
3351 struct kvec *iov = rcvbuf->head;
3353 u32 recvd, pglen = rcvbuf->page_len;
3354 __be32 *end, *entry, *p, *kaddr;
3355 unsigned int nr = 0;
3358 status = decode_op_hdr(xdr, OP_READDIR);
3362 COPYMEM(readdir->verifier.data, 8);
3363 dprintk("%s: verifier = %08x:%08x\n",
3365 ((u32 *)readdir->verifier.data)[0],
3366 ((u32 *)readdir->verifier.data)[1]);
3369 hdrlen = (char *) p - (char *) iov->iov_base;
3370 recvd = rcvbuf->len - hdrlen;
3373 xdr_read_pages(xdr, pglen);
3375 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3376 kaddr = p = kmap_atomic(page, KM_USER0);
3377 end = p + ((pglen + readdir->pgbase) >> 2);
3380 /* Make sure the packet actually has a value_follows and EOF entry */
3381 if ((entry + 1) > end)
3384 for (; *p++; nr++) {
3385 u32 len, attrlen, xlen;
3388 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3389 p += 2; /* cookie */
3390 len = ntohl(*p++); /* filename length */
3391 if (len > NFS4_MAXNAMLEN) {
3392 dprintk("NFS: giant filename in readdir (len 0x%x)\n",
3396 xlen = XDR_QUADLEN(len);
3397 if (end - p < xlen + 1)
3399 dprintk("filename = %*s\n", len, (char *)p);
3401 len = ntohl(*p++); /* bitmap length */
3402 if (end - p < len + 1)
3405 attrlen = XDR_QUADLEN(ntohl(*p++));
3406 if (end - p < attrlen + 2)
3408 p += attrlen; /* attributes */
3412 * Apparently some server sends responses that are a valid size, but
3413 * contain no entries, and have value_follows==0 and EOF==0. For
3414 * those, just set the EOF marker.
3416 if (!nr && entry[1] == 0) {
3417 dprintk("NFS: readdir reply truncated!\n");
3421 kunmap_atomic(kaddr, KM_USER0);
3425 * When we get a short packet there are 2 possibilities. We can
3426 * return an error, or fix up the response to look like a valid
3427 * response and return what we have so far. If there are no
3428 * entries and the packet was short, then return -EIO. If there
3429 * are valid entries in the response, return them and pretend that
3430 * the call was successful, but incomplete. The caller can retry the
3431 * readdir starting at the last cookie.
3433 dprintk("%s: short packet at entry %d\n", __func__, nr);
3434 entry[0] = entry[1] = 0;
3438 kunmap_atomic(kaddr, KM_USER0);
3439 return -errno_NFSERR_IO;
3442 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3444 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3445 struct kvec *iov = rcvbuf->head;
3452 status = decode_op_hdr(xdr, OP_READLINK);
3456 /* Convert length of symlink */
3459 if (len >= rcvbuf->page_len || len <= 0) {
3460 dprintk("nfs: server returned giant symlink!\n");
3461 return -ENAMETOOLONG;
3463 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3464 recvd = req->rq_rcv_buf.len - hdrlen;
3466 dprintk("NFS: server cheating in readlink reply: "
3467 "count %u > recvd %u\n", len, recvd);
3470 xdr_read_pages(xdr, len);
3472 * The XDR encode routine has set things up so that
3473 * the link text will be copied directly into the
3474 * buffer. We just have to do overflow-checking,
3475 * and and null-terminate the text (the VFS expects
3476 * null-termination).
3478 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3479 kaddr[len+rcvbuf->page_base] = '\0';
3480 kunmap_atomic(kaddr, KM_USER0);
3484 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3488 status = decode_op_hdr(xdr, OP_REMOVE);
3491 status = decode_change_info(xdr, cinfo);
3496 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3497 struct nfs4_change_info *new_cinfo)
3501 status = decode_op_hdr(xdr, OP_RENAME);
3504 if ((status = decode_change_info(xdr, old_cinfo)))
3506 status = decode_change_info(xdr, new_cinfo);
3511 static int decode_renew(struct xdr_stream *xdr)
3513 return decode_op_hdr(xdr, OP_RENEW);
3517 decode_restorefh(struct xdr_stream *xdr)
3519 return decode_op_hdr(xdr, OP_RESTOREFH);
3522 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3528 struct kvec *iov = req->rq_rcv_buf.head;
3532 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3534 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3536 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3539 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3541 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3545 /* We ignore &savep and don't do consistency checks on
3546 * the attr length. Let userspace figure it out.... */
3547 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3548 recvd = req->rq_rcv_buf.len - hdrlen;
3549 if (attrlen > recvd) {
3550 dprintk("NFS: server cheating in getattr"
3551 " acl reply: attrlen %u > recvd %u\n",
3555 xdr_read_pages(xdr, attrlen);
3558 status = -EOPNOTSUPP;
3565 decode_savefh(struct xdr_stream *xdr)
3567 return decode_op_hdr(xdr, OP_SAVEFH);
3570 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3576 status = decode_op_hdr(xdr, OP_SETATTR);
3581 READ_BUF(bmlen << 2);
3585 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
3593 if (opnum != OP_SETCLIENTID) {
3594 dprintk("nfs: decode_setclientid: Server returned operation"
3599 if (nfserr == NFS_OK) {
3600 READ_BUF(8 + NFS4_VERIFIER_SIZE);
3601 READ64(clp->cl_clientid);
3602 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
3603 } else if (nfserr == NFSERR_CLID_INUSE) {
3606 /* skip netid string */
3611 /* skip uaddr string */
3615 return -NFSERR_CLID_INUSE;
3617 return nfs4_stat_to_errno(nfserr);
3622 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3624 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3627 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3632 status = decode_op_hdr(xdr, OP_WRITE);
3638 READ32(res->verf->committed);
3639 COPYMEM(res->verf->verifier, 8);
3643 static int decode_delegreturn(struct xdr_stream *xdr)
3645 return decode_op_hdr(xdr, OP_DELEGRETURN);
3649 * END OF "GENERIC" DECODE ROUTINES.
3653 * Decode OPEN_DOWNGRADE response
3655 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
3657 struct xdr_stream xdr;
3658 struct compound_hdr hdr;
3661 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3662 status = decode_compound_hdr(&xdr, &hdr);
3665 status = decode_putfh(&xdr);
3668 status = decode_open_downgrade(&xdr, res);
3671 decode_getfattr(&xdr, res->fattr, res->server);
3677 * Decode ACCESS response
3679 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
3681 struct xdr_stream xdr;
3682 struct compound_hdr hdr;
3685 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3686 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3688 status = decode_putfh(&xdr);
3691 status = decode_access(&xdr, res);
3694 decode_getfattr(&xdr, res->fattr, res->server);
3700 * Decode LOOKUP response
3702 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
3704 struct xdr_stream xdr;
3705 struct compound_hdr hdr;
3708 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3709 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3711 if ((status = decode_putfh(&xdr)) != 0)
3713 if ((status = decode_lookup(&xdr)) != 0)
3715 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3717 status = decode_getfattr(&xdr, res->fattr, res->server);
3723 * Decode LOOKUP_ROOT response
3725 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
3727 struct xdr_stream xdr;
3728 struct compound_hdr hdr;
3731 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3732 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3734 if ((status = decode_putrootfh(&xdr)) != 0)
3736 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3737 status = decode_getfattr(&xdr, res->fattr, res->server);
3743 * Decode REMOVE response
3745 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
3747 struct xdr_stream xdr;
3748 struct compound_hdr hdr;
3751 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3752 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3754 if ((status = decode_putfh(&xdr)) != 0)
3756 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3758 decode_getfattr(&xdr, &res->dir_attr, res->server);
3764 * Decode RENAME response
3766 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
3768 struct xdr_stream xdr;
3769 struct compound_hdr hdr;
3772 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3773 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3775 if ((status = decode_putfh(&xdr)) != 0)
3777 if ((status = decode_savefh(&xdr)) != 0)
3779 if ((status = decode_putfh(&xdr)) != 0)
3781 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3783 /* Current FH is target directory */
3784 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3786 if ((status = decode_restorefh(&xdr)) != 0)
3788 decode_getfattr(&xdr, res->old_fattr, res->server);
3794 * Decode LINK response
3796 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
3798 struct xdr_stream xdr;
3799 struct compound_hdr hdr;
3802 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3803 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3805 if ((status = decode_putfh(&xdr)) != 0)
3807 if ((status = decode_savefh(&xdr)) != 0)
3809 if ((status = decode_putfh(&xdr)) != 0)
3811 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3814 * Note order: OP_LINK leaves the directory as the current
3817 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3819 if ((status = decode_restorefh(&xdr)) != 0)
3821 decode_getfattr(&xdr, res->fattr, res->server);
3827 * Decode CREATE response
3829 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
3831 struct xdr_stream xdr;
3832 struct compound_hdr hdr;
3835 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3836 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3838 if ((status = decode_putfh(&xdr)) != 0)
3840 if ((status = decode_savefh(&xdr)) != 0)
3842 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3844 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3846 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3848 if ((status = decode_restorefh(&xdr)) != 0)
3850 decode_getfattr(&xdr, res->dir_fattr, res->server);
3856 * Decode SYMLINK response
3858 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
3860 return nfs4_xdr_dec_create(rqstp, p, res);
3864 * Decode GETATTR response
3866 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
3868 struct xdr_stream xdr;
3869 struct compound_hdr hdr;
3872 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3873 status = decode_compound_hdr(&xdr, &hdr);
3876 status = decode_putfh(&xdr);
3879 status = decode_getfattr(&xdr, res->fattr, res->server);
3885 * Encode an SETACL request
3888 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
3890 struct xdr_stream xdr;
3891 struct compound_hdr hdr = {
3896 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3897 encode_compound_hdr(&xdr, &hdr);
3898 encode_putfh(&xdr, args->fh, &hdr);
3899 status = encode_setacl(&xdr, args, &hdr);
3905 * Decode SETACL response
3908 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, void *res)
3910 struct xdr_stream xdr;
3911 struct compound_hdr hdr;
3914 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3915 status = decode_compound_hdr(&xdr, &hdr);
3918 status = decode_putfh(&xdr);
3921 status = decode_setattr(&xdr, res);
3927 * Decode GETACL response
3930 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, size_t *acl_len)
3932 struct xdr_stream xdr;
3933 struct compound_hdr hdr;
3936 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3937 status = decode_compound_hdr(&xdr, &hdr);
3940 status = decode_putfh(&xdr);
3943 status = decode_getacl(&xdr, rqstp, acl_len);
3950 * Decode CLOSE response
3952 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
3954 struct xdr_stream xdr;
3955 struct compound_hdr hdr;
3958 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3959 status = decode_compound_hdr(&xdr, &hdr);
3962 status = decode_putfh(&xdr);
3965 status = decode_close(&xdr, res);
3969 * Note: Server may do delete on close for this file
3970 * in which case the getattr call will fail with
3971 * an ESTALE error. Shouldn't be a problem,
3972 * though, since fattr->valid will remain unset.
3974 decode_getfattr(&xdr, res->fattr, res->server);
3980 * Decode OPEN response
3982 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
3984 struct xdr_stream xdr;
3985 struct compound_hdr hdr;
3988 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3989 status = decode_compound_hdr(&xdr, &hdr);
3992 status = decode_putfh(&xdr);
3995 status = decode_savefh(&xdr);
3998 status = decode_open(&xdr, res);
4001 if (decode_getfh(&xdr, &res->fh) != 0)
4003 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4005 if (decode_restorefh(&xdr) != 0)
4007 decode_getfattr(&xdr, res->dir_attr, res->server);
4013 * Decode OPEN_CONFIRM response
4015 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
4017 struct xdr_stream xdr;
4018 struct compound_hdr hdr;
4021 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4022 status = decode_compound_hdr(&xdr, &hdr);
4025 status = decode_putfh(&xdr);
4028 status = decode_open_confirm(&xdr, res);
4034 * Decode OPEN response
4036 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4038 struct xdr_stream xdr;
4039 struct compound_hdr hdr;
4042 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4043 status = decode_compound_hdr(&xdr, &hdr);
4046 status = decode_putfh(&xdr);
4049 status = decode_open(&xdr, res);
4052 decode_getfattr(&xdr, res->f_attr, res->server);
4058 * Decode SETATTR response
4060 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4062 struct xdr_stream xdr;
4063 struct compound_hdr hdr;
4066 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4067 status = decode_compound_hdr(&xdr, &hdr);
4070 status = decode_putfh(&xdr);
4073 status = decode_setattr(&xdr, res);
4076 decode_getfattr(&xdr, res->fattr, res->server);
4082 * Decode LOCK response
4084 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4086 struct xdr_stream xdr;
4087 struct compound_hdr hdr;
4090 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4091 status = decode_compound_hdr(&xdr, &hdr);
4094 status = decode_putfh(&xdr);
4097 status = decode_lock(&xdr, res);
4103 * Decode LOCKT response
4105 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
4107 struct xdr_stream xdr;
4108 struct compound_hdr hdr;
4111 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4112 status = decode_compound_hdr(&xdr, &hdr);
4115 status = decode_putfh(&xdr);
4118 status = decode_lockt(&xdr, res);
4124 * Decode LOCKU response
4126 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
4128 struct xdr_stream xdr;
4129 struct compound_hdr hdr;
4132 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4133 status = decode_compound_hdr(&xdr, &hdr);
4136 status = decode_putfh(&xdr);
4139 status = decode_locku(&xdr, res);
4145 * Decode READLINK response
4147 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, void *res)
4149 struct xdr_stream xdr;
4150 struct compound_hdr hdr;
4153 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4154 status = decode_compound_hdr(&xdr, &hdr);
4157 status = decode_putfh(&xdr);
4160 status = decode_readlink(&xdr, rqstp);
4166 * Decode READDIR response
4168 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
4170 struct xdr_stream xdr;
4171 struct compound_hdr hdr;
4174 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4175 status = decode_compound_hdr(&xdr, &hdr);
4178 status = decode_putfh(&xdr);
4181 status = decode_readdir(&xdr, rqstp, res);
4187 * Decode Read response
4189 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
4191 struct xdr_stream xdr;
4192 struct compound_hdr hdr;
4195 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4196 status = decode_compound_hdr(&xdr, &hdr);
4199 status = decode_putfh(&xdr);
4202 status = decode_read(&xdr, rqstp, res);
4204 status = res->count;
4210 * Decode WRITE response
4212 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4214 struct xdr_stream xdr;
4215 struct compound_hdr hdr;
4218 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4219 status = decode_compound_hdr(&xdr, &hdr);
4222 status = decode_putfh(&xdr);
4225 status = decode_write(&xdr, res);
4228 decode_getfattr(&xdr, res->fattr, res->server);
4230 status = res->count;
4236 * Decode COMMIT response
4238 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4240 struct xdr_stream xdr;
4241 struct compound_hdr hdr;
4244 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4245 status = decode_compound_hdr(&xdr, &hdr);
4248 status = decode_putfh(&xdr);
4251 status = decode_commit(&xdr, res);
4254 decode_getfattr(&xdr, res->fattr, res->server);
4262 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4264 struct xdr_stream xdr;
4265 struct compound_hdr hdr;
4268 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4269 status = decode_compound_hdr(&xdr, &hdr);
4271 status = decode_putfh(&xdr);
4273 status = decode_fsinfo(&xdr, fsinfo);
4280 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *pathconf)
4282 struct xdr_stream xdr;
4283 struct compound_hdr hdr;
4286 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4287 status = decode_compound_hdr(&xdr, &hdr);
4289 status = decode_putfh(&xdr);
4291 status = decode_pathconf(&xdr, pathconf);
4298 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *fsstat)
4300 struct xdr_stream xdr;
4301 struct compound_hdr hdr;
4304 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4305 status = decode_compound_hdr(&xdr, &hdr);
4307 status = decode_putfh(&xdr);
4309 status = decode_statfs(&xdr, fsstat);
4314 * GETATTR_BITMAP request
4316 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
4318 struct xdr_stream xdr;
4319 struct compound_hdr hdr;
4322 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4323 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4325 if ((status = decode_putfh(&xdr)) != 0)
4327 status = decode_server_caps(&xdr, res);
4333 * Decode RENEW response
4335 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
4337 struct xdr_stream xdr;
4338 struct compound_hdr hdr;
4341 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4342 status = decode_compound_hdr(&xdr, &hdr);
4344 status = decode_renew(&xdr);
4349 * a SETCLIENTID request
4351 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
4352 struct nfs_client *clp)
4354 struct xdr_stream xdr;
4355 struct compound_hdr hdr;
4358 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4359 status = decode_compound_hdr(&xdr, &hdr);
4361 status = decode_setclientid(&xdr, clp);
4366 * a SETCLIENTID_CONFIRM request
4368 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4370 struct xdr_stream xdr;
4371 struct compound_hdr hdr;
4374 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4375 status = decode_compound_hdr(&xdr, &hdr);
4377 status = decode_setclientid_confirm(&xdr);
4379 status = decode_putrootfh(&xdr);
4381 status = decode_fsinfo(&xdr, fsinfo);
4386 * DELEGRETURN request
4388 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
4390 struct xdr_stream xdr;
4391 struct compound_hdr hdr;
4394 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4395 status = decode_compound_hdr(&xdr, &hdr);
4398 status = decode_putfh(&xdr);
4401 status = decode_delegreturn(&xdr);
4402 decode_getfattr(&xdr, res->fattr, res->server);
4408 * FS_LOCATIONS request
4410 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations *res)
4412 struct xdr_stream xdr;
4413 struct compound_hdr hdr;
4416 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4417 status = decode_compound_hdr(&xdr, &hdr);
4420 if ((status = decode_putfh(&xdr)) != 0)
4422 if ((status = decode_lookup(&xdr)) != 0)
4424 xdr_enter_page(&xdr, PAGE_SIZE);
4425 status = decode_getfattr(&xdr, &res->fattr, res->server);
4430 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
4432 uint32_t bitmap[2] = {0};
4437 return ERR_PTR(-EAGAIN);
4439 return ERR_PTR(-EBADCOOKIE);
4442 entry->prev_cookie = entry->cookie;
4443 p = xdr_decode_hyper(p, &entry->cookie);
4444 entry->len = ntohl(*p++);
4445 entry->name = (const char *) p;
4446 p += XDR_QUADLEN(entry->len);
4449 * In case the server doesn't return an inode number,
4450 * we fake one here. (We don't use inode number 0,
4451 * since glibc seems to choke on it...)
4455 len = ntohl(*p++); /* bitmap length */
4457 bitmap[0] = ntohl(*p++);
4459 bitmap[1] = ntohl(*p++);
4463 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4465 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4466 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4467 /* Ignore the return value of rdattr_error for now */
4471 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4472 xdr_decode_hyper(p, &entry->ino);
4473 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4474 xdr_decode_hyper(p, &entry->ino);
4478 entry->eof = !p[0] && p[1];
4483 * We need to translate between nfs status return values and
4484 * the local errno values which may not be the same.
4491 { NFS4ERR_PERM, -EPERM },
4492 { NFS4ERR_NOENT, -ENOENT },
4493 { NFS4ERR_IO, -errno_NFSERR_IO},
4494 { NFS4ERR_NXIO, -ENXIO },
4495 { NFS4ERR_ACCESS, -EACCES },
4496 { NFS4ERR_EXIST, -EEXIST },
4497 { NFS4ERR_XDEV, -EXDEV },
4498 { NFS4ERR_NOTDIR, -ENOTDIR },
4499 { NFS4ERR_ISDIR, -EISDIR },
4500 { NFS4ERR_INVAL, -EINVAL },
4501 { NFS4ERR_FBIG, -EFBIG },
4502 { NFS4ERR_NOSPC, -ENOSPC },
4503 { NFS4ERR_ROFS, -EROFS },
4504 { NFS4ERR_MLINK, -EMLINK },
4505 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
4506 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
4507 { NFS4ERR_DQUOT, -EDQUOT },
4508 { NFS4ERR_STALE, -ESTALE },
4509 { NFS4ERR_BADHANDLE, -EBADHANDLE },
4510 { NFS4ERR_BADOWNER, -EINVAL },
4511 { NFS4ERR_BADNAME, -EINVAL },
4512 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
4513 { NFS4ERR_NOTSUPP, -ENOTSUPP },
4514 { NFS4ERR_TOOSMALL, -ETOOSMALL },
4515 { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
4516 { NFS4ERR_BADTYPE, -EBADTYPE },
4517 { NFS4ERR_LOCKED, -EAGAIN },
4518 { NFS4ERR_RESOURCE, -EREMOTEIO },
4519 { NFS4ERR_SYMLINK, -ELOOP },
4520 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
4521 { NFS4ERR_DEADLOCK, -EDEADLK },
4522 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
4523 * to be handled by a
4530 * Convert an NFS error code to a local one.
4531 * This one is used jointly by NFSv2 and NFSv3.
4534 nfs4_stat_to_errno(int stat)
4537 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4538 if (nfs_errtbl[i].stat == stat)
4539 return nfs_errtbl[i].errno;
4541 if (stat <= 10000 || stat > 10100) {
4542 /* The server is looney tunes. */
4543 return -ESERVERFAULT;
4545 /* If we cannot translate the error, the recovery routines should
4547 * Note: remaining NFSv4 error codes have values > 10000, so should
4548 * not conflict with native Linux error codes.
4553 #define PROC(proc, argtype, restype) \
4554 [NFSPROC4_CLNT_##proc] = { \
4555 .p_proc = NFSPROC4_COMPOUND, \
4556 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4557 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4558 .p_arglen = NFS4_##argtype##_sz, \
4559 .p_replen = NFS4_##restype##_sz, \
4560 .p_statidx = NFSPROC4_CLNT_##proc, \
4564 struct rpc_procinfo nfs4_procedures[] = {
4565 PROC(READ, enc_read, dec_read),
4566 PROC(WRITE, enc_write, dec_write),
4567 PROC(COMMIT, enc_commit, dec_commit),
4568 PROC(OPEN, enc_open, dec_open),
4569 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4570 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4571 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4572 PROC(CLOSE, enc_close, dec_close),
4573 PROC(SETATTR, enc_setattr, dec_setattr),
4574 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4575 PROC(RENEW, enc_renew, dec_renew),
4576 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4577 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4578 PROC(LOCK, enc_lock, dec_lock),
4579 PROC(LOCKT, enc_lockt, dec_lockt),
4580 PROC(LOCKU, enc_locku, dec_locku),
4581 PROC(ACCESS, enc_access, dec_access),
4582 PROC(GETATTR, enc_getattr, dec_getattr),
4583 PROC(LOOKUP, enc_lookup, dec_lookup),
4584 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4585 PROC(REMOVE, enc_remove, dec_remove),
4586 PROC(RENAME, enc_rename, dec_rename),
4587 PROC(LINK, enc_link, dec_link),
4588 PROC(SYMLINK, enc_symlink, dec_symlink),
4589 PROC(CREATE, enc_create, dec_create),
4590 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4591 PROC(STATFS, enc_statfs, dec_statfs),
4592 PROC(READLINK, enc_readlink, dec_readlink),
4593 PROC(READDIR, enc_readdir, dec_readdir),
4594 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4595 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
4596 PROC(GETACL, enc_getacl, dec_getacl),
4597 PROC(SETACL, enc_setacl, dec_setacl),
4598 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
4601 struct rpc_version nfs_version4 = {
4603 .nrprocs = ARRAY_SIZE(nfs4_procedures),
4604 .procs = nfs4_procedures