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)
527 unsigned int nfs2type;
535 { S_IFSOCK, NFSOCK },
541 struct compound_hdr {
550 * START OF "GENERIC" ENCODE ROUTINES.
551 * These may look a little ugly since they are imported from a "generic"
552 * set of XDR encode/decode routines which are intended to be shared by
553 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
555 * If the pain of reading these is too great, it should be a straightforward
556 * task to translate them into Linux-specific versions which are more
557 * consistent with the style used in NFSv2/v3...
559 #define WRITE32(n) *p++ = htonl(n)
560 #define WRITE64(n) do { \
561 *p++ = htonl((uint32_t)((n) >> 32)); \
562 *p++ = htonl((uint32_t)(n)); \
564 #define WRITEMEM(ptr,nbytes) do { \
565 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
568 #define RESERVE_SPACE(nbytes) do { \
569 p = xdr_reserve_space(xdr, nbytes); \
573 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
577 p = xdr_reserve_space(xdr, 4 + len);
579 xdr_encode_opaque(p, str, len);
582 static void encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
586 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
587 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
588 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
589 WRITE32(hdr->taglen);
590 WRITEMEM(hdr->tag, hdr->taglen);
591 WRITE32(NFS4_MINOR_VERSION);
596 static void encode_nops(struct compound_hdr *hdr)
598 *hdr->nops_p = htonl(hdr->nops);
601 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
605 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
607 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
610 static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
612 char owner_name[IDMAP_NAMESZ];
613 char owner_group[IDMAP_NAMESZ];
614 int owner_namelen = 0;
615 int owner_grouplen = 0;
624 * We reserve enough space to write the entire attribute buffer at once.
625 * In the worst-case, this would be
626 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
627 * = 36 bytes, plus any contribution from variable-length fields
628 * such as owner/group.
633 if (iap->ia_valid & ATTR_SIZE)
635 if (iap->ia_valid & ATTR_MODE)
637 if (iap->ia_valid & ATTR_UID) {
638 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
639 if (owner_namelen < 0) {
640 dprintk("nfs: couldn't resolve uid %d to string\n",
643 strcpy(owner_name, "nobody");
644 owner_namelen = sizeof("nobody") - 1;
647 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
649 if (iap->ia_valid & ATTR_GID) {
650 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
651 if (owner_grouplen < 0) {
652 dprintk("nfs: couldn't resolve gid %d to string\n",
654 strcpy(owner_group, "nobody");
655 owner_grouplen = sizeof("nobody") - 1;
658 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
660 if (iap->ia_valid & ATTR_ATIME_SET)
662 else if (iap->ia_valid & ATTR_ATIME)
664 if (iap->ia_valid & ATTR_MTIME_SET)
666 else if (iap->ia_valid & ATTR_MTIME)
671 * We write the bitmap length now, but leave the bitmap and the attribute
672 * buffer length to be backfilled at the end of this routine.
678 if (iap->ia_valid & ATTR_SIZE) {
679 bmval0 |= FATTR4_WORD0_SIZE;
680 WRITE64(iap->ia_size);
682 if (iap->ia_valid & ATTR_MODE) {
683 bmval1 |= FATTR4_WORD1_MODE;
684 WRITE32(iap->ia_mode & S_IALLUGO);
686 if (iap->ia_valid & ATTR_UID) {
687 bmval1 |= FATTR4_WORD1_OWNER;
688 WRITE32(owner_namelen);
689 WRITEMEM(owner_name, owner_namelen);
691 if (iap->ia_valid & ATTR_GID) {
692 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
693 WRITE32(owner_grouplen);
694 WRITEMEM(owner_group, owner_grouplen);
696 if (iap->ia_valid & ATTR_ATIME_SET) {
697 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
698 WRITE32(NFS4_SET_TO_CLIENT_TIME);
700 WRITE32(iap->ia_mtime.tv_sec);
701 WRITE32(iap->ia_mtime.tv_nsec);
703 else if (iap->ia_valid & ATTR_ATIME) {
704 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
705 WRITE32(NFS4_SET_TO_SERVER_TIME);
707 if (iap->ia_valid & ATTR_MTIME_SET) {
708 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
709 WRITE32(NFS4_SET_TO_CLIENT_TIME);
711 WRITE32(iap->ia_mtime.tv_sec);
712 WRITE32(iap->ia_mtime.tv_nsec);
714 else if (iap->ia_valid & ATTR_MTIME) {
715 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
716 WRITE32(NFS4_SET_TO_SERVER_TIME);
720 * Now we backfill the bitmap and the attribute buffer length.
722 if (len != ((char *)p - (char *)q) + 4) {
723 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
724 len, ((char *)p - (char *)q) + 4);
727 len = (char *)p - (char *)q - 12;
728 *q++ = htonl(bmval0);
729 *q++ = htonl(bmval1);
737 static int encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
749 static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
753 RESERVE_SPACE(8+NFS4_STATEID_SIZE);
755 WRITE32(arg->seqid->sequence->counter);
756 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
762 static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
768 WRITE64(args->offset);
769 WRITE32(args->count);
775 static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
781 WRITE32(create->ftype);
783 switch (create->ftype) {
786 WRITE32(create->u.symlink.len);
787 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
790 case NF4BLK: case NF4CHR:
792 WRITE32(create->u.device.specdata1);
793 WRITE32(create->u.device.specdata2);
800 RESERVE_SPACE(4 + create->name->len);
801 WRITE32(create->name->len);
802 WRITEMEM(create->name->name, create->name->len);
805 return encode_attrs(xdr, create->attrs, create->server);
808 static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
820 static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
833 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
835 return encode_getattr_two(xdr,
836 bitmask[0] & nfs4_fattr_bitmap[0],
837 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
840 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
842 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
843 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
846 static int encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
848 return encode_getattr_two(xdr,
849 bitmask[0] & nfs4_fs_locations_bitmap[0],
850 bitmask[1] & nfs4_fs_locations_bitmap[1],
854 static int encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
865 static int encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
869 RESERVE_SPACE(8 + name->len);
872 WRITEMEM(name->name, name->len);
878 static inline int nfs4_lock_type(struct file_lock *fl, int block)
880 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
881 return block ? NFS4_READW_LT : NFS4_READ_LT;
882 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
885 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
887 if (fl->fl_end == OFFSET_MAX)
889 return fl->fl_end - fl->fl_start + 1;
893 * opcode,type,reclaim,offset,length,new_lock_owner = 32
894 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
896 static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
902 WRITE32(nfs4_lock_type(args->fl, args->block));
903 WRITE32(args->reclaim);
904 WRITE64(args->fl->fl_start);
905 WRITE64(nfs4_lock_length(args->fl));
906 WRITE32(args->new_lock_owner);
907 if (args->new_lock_owner){
908 RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
909 WRITE32(args->open_seqid->sequence->counter);
910 WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
911 WRITE32(args->lock_seqid->sequence->counter);
912 WRITE64(args->lock_owner.clientid);
914 WRITEMEM("lock id:", 8);
915 WRITE64(args->lock_owner.id);
918 RESERVE_SPACE(NFS4_STATEID_SIZE+4);
919 WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
920 WRITE32(args->lock_seqid->sequence->counter);
927 static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
933 WRITE32(nfs4_lock_type(args->fl, 0));
934 WRITE64(args->fl->fl_start);
935 WRITE64(nfs4_lock_length(args->fl));
936 WRITE64(args->lock_owner.clientid);
938 WRITEMEM("lock id:", 8);
939 WRITE64(args->lock_owner.id);
945 static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
949 RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
951 WRITE32(nfs4_lock_type(args->fl, 0));
952 WRITE32(args->seqid->sequence->counter);
953 WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
954 WRITE64(args->fl->fl_start);
955 WRITE64(nfs4_lock_length(args->fl));
961 static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
966 RESERVE_SPACE(8 + len);
969 WRITEMEM(name->name, len);
975 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
980 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
982 WRITE32(NFS4_SHARE_ACCESS_READ);
985 WRITE32(NFS4_SHARE_ACCESS_WRITE);
987 case FMODE_READ|FMODE_WRITE:
988 WRITE32(NFS4_SHARE_ACCESS_BOTH);
993 WRITE32(0); /* for linux, share_deny = 0 always */
996 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1000 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1005 WRITE32(arg->seqid->sequence->counter);
1006 encode_share_access(xdr, arg->fmode);
1008 WRITE64(arg->clientid);
1010 WRITEMEM("open id:", 8);
1014 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1019 switch(arg->open_flags & O_EXCL) {
1021 WRITE32(NFS4_CREATE_UNCHECKED);
1022 encode_attrs(xdr, arg->u.attrs, arg->server);
1025 WRITE32(NFS4_CREATE_EXCLUSIVE);
1026 encode_nfs4_verifier(xdr, &arg->u.verifier);
1030 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1035 switch (arg->open_flags & O_CREAT) {
1037 WRITE32(NFS4_OPEN_NOCREATE);
1040 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1041 WRITE32(NFS4_OPEN_CREATE);
1042 encode_createmode(xdr, arg);
1046 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
1051 switch (delegation_type) {
1053 WRITE32(NFS4_OPEN_DELEGATE_NONE);
1056 WRITE32(NFS4_OPEN_DELEGATE_READ);
1058 case FMODE_WRITE|FMODE_READ:
1059 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
1066 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1071 WRITE32(NFS4_OPEN_CLAIM_NULL);
1072 encode_string(xdr, name->len, name->name);
1075 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
1080 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
1081 encode_delegation_type(xdr, type);
1084 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1088 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1089 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1090 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1091 encode_string(xdr, name->len, name->name);
1094 static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
1096 encode_openhdr(xdr, arg);
1097 encode_opentype(xdr, arg);
1098 switch (arg->claim) {
1099 case NFS4_OPEN_CLAIM_NULL:
1100 encode_claim_null(xdr, arg->name);
1102 case NFS4_OPEN_CLAIM_PREVIOUS:
1103 encode_claim_previous(xdr, arg->u.delegation_type);
1105 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1106 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1115 static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
1119 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1120 WRITE32(OP_OPEN_CONFIRM);
1121 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1122 WRITE32(arg->seqid->sequence->counter);
1128 static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
1132 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1133 WRITE32(OP_OPEN_DOWNGRADE);
1134 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1135 WRITE32(arg->seqid->sequence->counter);
1136 encode_share_access(xdr, arg->fmode);
1142 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
1147 RESERVE_SPACE(8 + len);
1150 WRITEMEM(fh->data, len);
1156 static int encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1161 WRITE32(OP_PUTROOTFH);
1167 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1169 nfs4_stateid stateid;
1172 RESERVE_SPACE(NFS4_STATEID_SIZE);
1173 if (ctx->state != NULL) {
1174 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1175 WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
1177 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1180 static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
1187 encode_stateid(xdr, args->context);
1190 WRITE64(args->offset);
1191 WRITE32(args->count);
1197 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
1199 uint32_t attrs[2] = {
1200 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1201 FATTR4_WORD1_MOUNTED_ON_FILEID,
1205 RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
1206 WRITE32(OP_READDIR);
1207 WRITE64(readdir->cookie);
1208 WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
1209 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1210 WRITE32(readdir->count);
1212 /* Switch to mounted_on_fileid if the server supports it */
1213 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1214 attrs[0] &= ~FATTR4_WORD0_FILEID;
1216 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1217 WRITE32(attrs[0] & readdir->bitmask[0]);
1218 WRITE32(attrs[1] & readdir->bitmask[1]);
1220 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1222 (unsigned long long)readdir->cookie,
1223 ((u32 *)readdir->verifier.data)[0],
1224 ((u32 *)readdir->verifier.data)[1],
1225 attrs[0] & readdir->bitmask[0],
1226 attrs[1] & readdir->bitmask[1]);
1231 static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
1236 WRITE32(OP_READLINK);
1242 static int encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1246 RESERVE_SPACE(8 + name->len);
1249 WRITEMEM(name->name, name->len);
1255 static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
1259 RESERVE_SPACE(8 + oldname->len);
1261 WRITE32(oldname->len);
1262 WRITEMEM(oldname->name, oldname->len);
1264 RESERVE_SPACE(4 + newname->len);
1265 WRITE32(newname->len);
1266 WRITEMEM(newname->name, newname->len);
1272 static int encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
1278 WRITE64(client_stateid->cl_clientid);
1285 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1290 WRITE32(OP_RESTOREFH);
1297 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1301 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1302 WRITE32(OP_SETATTR);
1303 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1306 WRITE32(FATTR4_WORD0_ACL);
1307 if (arg->acl_len % 4)
1310 WRITE32(arg->acl_len);
1311 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1317 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1328 static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
1333 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1334 WRITE32(OP_SETATTR);
1335 WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
1338 if ((status = encode_attrs(xdr, arg->iap, server)))
1344 static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
1348 RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
1349 WRITE32(OP_SETCLIENTID);
1350 WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1352 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1354 WRITE32(setclientid->sc_prog);
1355 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1356 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1358 WRITE32(setclientid->sc_cb_ident);
1364 static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr)
1368 RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
1369 WRITE32(OP_SETCLIENTID_CONFIRM);
1370 WRITE64(client_state->cl_clientid);
1371 WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1377 static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
1384 encode_stateid(xdr, args->context);
1387 WRITE64(args->offset);
1388 WRITE32(args->stable);
1389 WRITE32(args->count);
1391 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1397 static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
1401 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1403 WRITE32(OP_DELEGRETURN);
1404 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1410 * END OF "GENERIC" ENCODE ROUTINES.
1414 * Encode an ACCESS request
1416 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1418 struct xdr_stream xdr;
1419 struct compound_hdr hdr = {
1424 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1425 encode_compound_hdr(&xdr, &hdr);
1426 status = encode_putfh(&xdr, args->fh, &hdr);
1429 status = encode_access(&xdr, args->access, &hdr);
1432 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1439 * Encode LOOKUP request
1441 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1443 struct xdr_stream xdr;
1444 struct compound_hdr hdr = {
1449 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1450 encode_compound_hdr(&xdr, &hdr);
1451 if ((status = encode_putfh(&xdr, args->dir_fh, &hdr)) != 0)
1453 if ((status = encode_lookup(&xdr, args->name, &hdr)) != 0)
1455 if ((status = encode_getfh(&xdr, &hdr)) != 0)
1457 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1464 * Encode LOOKUP_ROOT request
1466 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1468 struct xdr_stream xdr;
1469 struct compound_hdr hdr = {
1474 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1475 encode_compound_hdr(&xdr, &hdr);
1476 if ((status = encode_putrootfh(&xdr, &hdr)) != 0)
1478 if ((status = encode_getfh(&xdr, &hdr)) == 0)
1479 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1486 * Encode REMOVE request
1488 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
1490 struct xdr_stream xdr;
1491 struct compound_hdr hdr = {
1496 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1497 encode_compound_hdr(&xdr, &hdr);
1498 if ((status = encode_putfh(&xdr, args->fh, &hdr)) != 0)
1500 if ((status = encode_remove(&xdr, &args->name, &hdr)) != 0)
1502 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1509 * Encode RENAME request
1511 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1513 struct xdr_stream xdr;
1514 struct compound_hdr hdr = {
1519 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1520 encode_compound_hdr(&xdr, &hdr);
1521 if ((status = encode_putfh(&xdr, args->old_dir, &hdr)) != 0)
1523 if ((status = encode_savefh(&xdr, &hdr)) != 0)
1525 if ((status = encode_putfh(&xdr, args->new_dir, &hdr)) != 0)
1527 if ((status = encode_rename(&xdr, args->old_name, args->new_name,
1530 if ((status = encode_getfattr(&xdr, args->bitmask, &hdr)) != 0)
1532 if ((status = encode_restorefh(&xdr, &hdr)) != 0)
1534 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1541 * Encode LINK request
1543 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1545 struct xdr_stream xdr;
1546 struct compound_hdr hdr = {
1551 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1552 encode_compound_hdr(&xdr, &hdr);
1553 if ((status = encode_putfh(&xdr, args->fh, &hdr)) != 0)
1555 if ((status = encode_savefh(&xdr, &hdr)) != 0)
1557 if ((status = encode_putfh(&xdr, args->dir_fh, &hdr)) != 0)
1559 if ((status = encode_link(&xdr, args->name, &hdr)) != 0)
1561 if ((status = encode_getfattr(&xdr, args->bitmask, &hdr)) != 0)
1563 if ((status = encode_restorefh(&xdr, &hdr)) != 0)
1565 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1572 * Encode CREATE request
1574 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1576 struct xdr_stream xdr;
1577 struct compound_hdr hdr = {
1582 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1583 encode_compound_hdr(&xdr, &hdr);
1584 if ((status = encode_putfh(&xdr, args->dir_fh, &hdr)) != 0)
1586 if ((status = encode_savefh(&xdr, &hdr)) != 0)
1588 if ((status = encode_create(&xdr, args, &hdr)) != 0)
1590 if ((status = encode_getfh(&xdr, &hdr)) != 0)
1592 if ((status = encode_getfattr(&xdr, args->bitmask, &hdr)) != 0)
1594 if ((status = encode_restorefh(&xdr, &hdr)) != 0)
1596 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1603 * Encode SYMLINK request
1605 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1607 return nfs4_xdr_enc_create(req, p, args);
1611 * Encode GETATTR request
1613 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1615 struct xdr_stream xdr;
1616 struct compound_hdr hdr = {
1621 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1622 encode_compound_hdr(&xdr, &hdr);
1623 if ((status = encode_putfh(&xdr, args->fh, &hdr)) == 0)
1624 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1630 * Encode a CLOSE request
1632 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1634 struct xdr_stream xdr;
1635 struct compound_hdr hdr = {
1640 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1641 encode_compound_hdr(&xdr, &hdr);
1642 status = encode_putfh(&xdr, args->fh, &hdr);
1645 status = encode_close(&xdr, args, &hdr);
1648 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1655 * Encode an OPEN request
1657 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1659 struct xdr_stream xdr;
1660 struct compound_hdr hdr = {
1665 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1666 encode_compound_hdr(&xdr, &hdr);
1667 status = encode_putfh(&xdr, args->fh, &hdr);
1670 status = encode_savefh(&xdr, &hdr);
1673 status = encode_open(&xdr, args, &hdr);
1676 status = encode_getfh(&xdr, &hdr);
1679 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1682 status = encode_restorefh(&xdr, &hdr);
1685 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1692 * Encode an OPEN_CONFIRM request
1694 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1696 struct xdr_stream xdr;
1697 struct compound_hdr hdr = {
1702 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1703 encode_compound_hdr(&xdr, &hdr);
1704 status = encode_putfh(&xdr, args->fh, &hdr);
1707 status = encode_open_confirm(&xdr, args, &hdr);
1714 * Encode an OPEN request with no attributes.
1716 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1718 struct xdr_stream xdr;
1719 struct compound_hdr hdr = {
1724 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1725 encode_compound_hdr(&xdr, &hdr);
1726 status = encode_putfh(&xdr, args->fh, &hdr);
1729 status = encode_open(&xdr, args, &hdr);
1732 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1739 * Encode an OPEN_DOWNGRADE request
1741 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1743 struct xdr_stream xdr;
1744 struct compound_hdr hdr = {
1749 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1750 encode_compound_hdr(&xdr, &hdr);
1751 status = encode_putfh(&xdr, args->fh, &hdr);
1754 status = encode_open_downgrade(&xdr, args, &hdr);
1757 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1764 * Encode a LOCK request
1766 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1768 struct xdr_stream xdr;
1769 struct compound_hdr hdr = {
1774 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1775 encode_compound_hdr(&xdr, &hdr);
1776 status = encode_putfh(&xdr, args->fh, &hdr);
1779 status = encode_lock(&xdr, args, &hdr);
1786 * Encode a LOCKT request
1788 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1790 struct xdr_stream xdr;
1791 struct compound_hdr hdr = {
1796 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1797 encode_compound_hdr(&xdr, &hdr);
1798 status = encode_putfh(&xdr, args->fh, &hdr);
1801 status = encode_lockt(&xdr, args, &hdr);
1808 * Encode a LOCKU request
1810 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1812 struct xdr_stream xdr;
1813 struct compound_hdr hdr = {
1818 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1819 encode_compound_hdr(&xdr, &hdr);
1820 status = encode_putfh(&xdr, args->fh, &hdr);
1823 status = encode_locku(&xdr, args, &hdr);
1830 * Encode a READLINK request
1832 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
1834 struct xdr_stream xdr;
1835 struct compound_hdr hdr = {
1838 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1839 unsigned int replen;
1842 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1843 encode_compound_hdr(&xdr, &hdr);
1844 status = encode_putfh(&xdr, args->fh, &hdr);
1847 status = encode_readlink(&xdr, args, req, &hdr);
1849 /* set up reply kvec
1850 * toplevel_status + taglen + rescount + OP_PUTFH + status
1851 * + OP_READLINK + status + string length = 8
1853 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readlink_sz) << 2;
1854 xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
1855 args->pgbase, args->pglen);
1863 * Encode a READDIR request
1865 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
1867 struct xdr_stream xdr;
1868 struct compound_hdr hdr = {
1871 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1875 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1876 encode_compound_hdr(&xdr, &hdr);
1877 status = encode_putfh(&xdr, args->fh, &hdr);
1880 status = encode_readdir(&xdr, args, req, &hdr);
1882 /* set up reply kvec
1883 * toplevel_status + taglen + rescount + OP_PUTFH + status
1884 * + OP_READDIR + status + verifer(2) = 9
1886 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readdir_sz) << 2;
1887 xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
1888 args->pgbase, args->count);
1889 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1890 __func__, replen, args->pages,
1891 args->pgbase, args->count);
1899 * Encode a READ request
1901 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
1903 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1904 struct xdr_stream xdr;
1905 struct compound_hdr hdr = {
1910 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1911 encode_compound_hdr(&xdr, &hdr);
1912 status = encode_putfh(&xdr, args->fh, &hdr);
1915 status = encode_read(&xdr, args, &hdr);
1919 /* set up reply kvec
1920 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1921 * + OP_READ + status + eof + datalen = 9
1923 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1924 xdr_inline_pages(&req->rq_rcv_buf, replen,
1925 args->pages, args->pgbase, args->count);
1926 req->rq_rcv_buf.flags |= XDRBUF_READ;
1933 * Encode an SETATTR request
1935 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
1937 struct xdr_stream xdr;
1938 struct compound_hdr hdr = {
1943 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1944 encode_compound_hdr(&xdr, &hdr);
1945 status = encode_putfh(&xdr, args->fh, &hdr);
1948 status = encode_setattr(&xdr, args, args->server, &hdr);
1951 status = encode_getfattr(&xdr, args->bitmask, &hdr);
1958 * Encode a GETACL request
1961 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
1962 struct nfs_getaclargs *args)
1964 struct xdr_stream xdr;
1965 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1966 struct compound_hdr hdr = {
1971 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1972 encode_compound_hdr(&xdr, &hdr);
1973 status = encode_putfh(&xdr, args->fh, &hdr);
1976 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
1977 /* set up reply buffer: */
1978 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1979 xdr_inline_pages(&req->rq_rcv_buf, replen,
1980 args->acl_pages, args->acl_pgbase, args->acl_len);
1987 * Encode a WRITE request
1989 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1991 struct xdr_stream xdr;
1992 struct compound_hdr hdr = {
1997 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1998 encode_compound_hdr(&xdr, &hdr);
1999 status = encode_putfh(&xdr, args->fh, &hdr);
2002 status = encode_write(&xdr, args, &hdr);
2005 req->rq_snd_buf.flags |= XDRBUF_WRITE;
2006 status = encode_getfattr(&xdr, args->bitmask, &hdr);
2015 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
2017 struct xdr_stream xdr;
2018 struct compound_hdr hdr = {
2023 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2024 encode_compound_hdr(&xdr, &hdr);
2025 status = encode_putfh(&xdr, args->fh, &hdr);
2028 status = encode_commit(&xdr, args, &hdr);
2031 status = encode_getfattr(&xdr, args->bitmask, &hdr);
2040 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
2042 struct xdr_stream xdr;
2043 struct compound_hdr hdr = {
2048 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2049 encode_compound_hdr(&xdr, &hdr);
2050 status = encode_putfh(&xdr, args->fh, &hdr);
2052 status = encode_fsinfo(&xdr, args->bitmask, &hdr);
2058 * a PATHCONF request
2060 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
2062 struct xdr_stream xdr;
2063 struct compound_hdr hdr = {
2068 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2069 encode_compound_hdr(&xdr, &hdr);
2070 status = encode_putfh(&xdr, args->fh, &hdr);
2072 status = encode_getattr_one(&xdr,
2073 args->bitmask[0] & nfs4_pathconf_bitmap[0],
2082 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
2084 struct xdr_stream xdr;
2085 struct compound_hdr hdr = {
2090 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2091 encode_compound_hdr(&xdr, &hdr);
2092 status = encode_putfh(&xdr, args->fh, &hdr);
2094 status = encode_getattr_two(&xdr,
2095 args->bitmask[0] & nfs4_statfs_bitmap[0],
2096 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2102 * GETATTR_BITMAP request
2104 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, const struct nfs_fh *fhandle)
2106 struct xdr_stream xdr;
2107 struct compound_hdr hdr = {
2112 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2113 encode_compound_hdr(&xdr, &hdr);
2114 status = encode_putfh(&xdr, fhandle, &hdr);
2116 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2117 FATTR4_WORD0_LINK_SUPPORT|
2118 FATTR4_WORD0_SYMLINK_SUPPORT|
2119 FATTR4_WORD0_ACLSUPPORT, &hdr);
2127 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2129 struct xdr_stream xdr;
2130 struct compound_hdr hdr = {
2135 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2136 encode_compound_hdr(&xdr, &hdr);
2137 status = encode_renew(&xdr, clp, &hdr);
2143 * a SETCLIENTID request
2145 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
2147 struct xdr_stream xdr;
2148 struct compound_hdr hdr = {
2153 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2154 encode_compound_hdr(&xdr, &hdr);
2155 status = encode_setclientid(&xdr, sc, &hdr);
2161 * a SETCLIENTID_CONFIRM request
2163 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
2165 struct xdr_stream xdr;
2166 struct compound_hdr hdr = {
2169 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2172 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2173 encode_compound_hdr(&xdr, &hdr);
2174 status = encode_setclientid_confirm(&xdr, clp, &hdr);
2176 status = encode_putrootfh(&xdr, &hdr);
2178 status = encode_fsinfo(&xdr, lease_bitmap, &hdr);
2184 * DELEGRETURN request
2186 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
2188 struct xdr_stream xdr;
2189 struct compound_hdr hdr = {
2194 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2195 encode_compound_hdr(&xdr, &hdr);
2196 status = encode_putfh(&xdr, args->fhandle, &hdr);
2199 status = encode_delegreturn(&xdr, args->stateid, &hdr);
2202 status = encode_getfattr(&xdr, args->bitmask, &hdr);
2209 * Encode FS_LOCATIONS request
2211 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2213 struct xdr_stream xdr;
2214 struct compound_hdr hdr = {
2217 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
2221 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2222 encode_compound_hdr(&xdr, &hdr);
2223 if ((status = encode_putfh(&xdr, args->dir_fh, &hdr)) != 0)
2225 if ((status = encode_lookup(&xdr, args->name, &hdr)) != 0)
2227 if ((status = encode_fs_locations(&xdr, args->bitmask, &hdr)) != 0)
2230 * toplevel_status + OP_PUTFH + status
2231 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2233 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2234 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2242 * START OF "GENERIC" DECODE ROUTINES.
2243 * These may look a little ugly since they are imported from a "generic"
2244 * set of XDR encode/decode routines which are intended to be shared by
2245 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2247 * If the pain of reading these is too great, it should be a straightforward
2248 * task to translate them into Linux-specific versions which are more
2249 * consistent with the style used in NFSv2/v3...
2251 #define READ32(x) (x) = ntohl(*p++)
2252 #define READ64(x) do { \
2253 (x) = (u64)ntohl(*p++) << 32; \
2254 (x) |= ntohl(*p++); \
2256 #define READTIME(x) do { \
2258 (x.tv_sec) = ntohl(*p++); \
2259 (x.tv_nsec) = ntohl(*p++); \
2261 #define COPYMEM(x,nbytes) do { \
2262 memcpy((x), p, nbytes); \
2263 p += XDR_QUADLEN(nbytes); \
2266 #define READ_BUF(nbytes) do { \
2267 p = xdr_inline_decode(xdr, nbytes); \
2268 if (unlikely(!p)) { \
2269 dprintk("nfs: %s: prematurely hit end of receive" \
2270 " buffer\n", __func__); \
2271 dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2272 __func__, xdr->p, nbytes, xdr->end); \
2277 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2284 *string = (char *)p;
2288 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2293 READ32(hdr->status);
2294 READ32(hdr->taglen);
2296 READ_BUF(hdr->taglen + 4);
2297 hdr->tag = (char *)p;
2298 p += XDR_QUADLEN(hdr->taglen);
2300 if (unlikely(hdr->nops < 1))
2301 return nfs4_stat_to_errno(hdr->status);
2305 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2313 if (opnum != expected) {
2314 dprintk("nfs: Server returned operation"
2315 " %d but we issued a request for %d\n",
2320 if (nfserr != NFS_OK)
2321 return nfs4_stat_to_errno(nfserr);
2326 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2329 unsigned int strlen;
2333 return decode_opaque_inline(xdr, &strlen, &str);
2336 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2344 bitmap[0] = bitmap[1] = 0;
2345 READ_BUF((bmlen << 2));
2354 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
2364 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2366 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2367 decode_attr_bitmap(xdr, bitmask);
2368 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2370 bitmask[0] = bitmask[1] = 0;
2371 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
2375 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2380 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2382 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2385 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2386 dprintk("%s: bad type %d\n", __func__, *type);
2389 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2391 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type].nfs2type);
2395 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2400 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2402 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2405 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2407 dprintk("%s: change attribute=%Lu\n", __func__,
2408 (unsigned long long)*change);
2412 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2417 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2419 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2422 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2424 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
2428 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2433 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2435 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2438 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2440 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
2444 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2449 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2451 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2454 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2456 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
2460 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2466 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2468 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2470 READ64(fsid->major);
2471 READ64(fsid->minor);
2472 bitmap[0] &= ~FATTR4_WORD0_FSID;
2474 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
2475 (unsigned long long)fsid->major,
2476 (unsigned long long)fsid->minor);
2480 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2485 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2487 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2490 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2492 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
2496 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2500 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2501 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2503 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2506 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2508 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
2512 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2517 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2519 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2522 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2524 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2528 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2533 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2535 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2538 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2540 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
2544 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2550 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2552 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2555 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2557 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
2561 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2567 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2569 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2572 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2574 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
2578 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2584 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2586 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2589 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2591 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
2595 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2606 path->ncomponents = 0;
2607 while (path->ncomponents < n) {
2608 struct nfs4_string *component = &path->components[path->ncomponents];
2609 status = decode_opaque_inline(xdr, &component->len, &component->data);
2610 if (unlikely(status != 0))
2612 if (path->ncomponents != n)
2614 dprintk("%s", component->data);
2615 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2616 path->ncomponents++;
2618 dprintk("cannot parse %d components in path\n", n);
2626 /* a root pathname is sent as a zero component4 */
2627 path->ncomponents = 1;
2628 path->components[0].len=0;
2629 path->components[0].data=NULL;
2630 dprintk("path /\n");
2633 dprintk(" status %d", status);
2638 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2644 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2647 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2649 dprintk("%s: fsroot ", __func__);
2650 status = decode_pathname(xdr, &res->fs_path);
2651 if (unlikely(status != 0))
2657 res->nlocations = 0;
2658 while (res->nlocations < n) {
2660 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2666 dprintk("%s: servers ", __func__);
2667 while (loc->nservers < m) {
2668 struct nfs4_string *server = &loc->servers[loc->nservers];
2669 status = decode_opaque_inline(xdr, &server->len, &server->data);
2670 if (unlikely(status != 0))
2672 dprintk("%s ", server->data);
2673 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2677 dprintk("%s: using first %u of %u servers "
2678 "returned for location %u\n",
2680 NFS4_FS_LOCATION_MAXSERVERS,
2681 m, res->nlocations);
2682 for (i = loc->nservers; i < m; i++) {
2685 status = decode_opaque_inline(xdr, &len, &data);
2686 if (unlikely(status != 0))
2691 status = decode_pathname(xdr, &loc->rootpath);
2692 if (unlikely(status != 0))
2694 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2698 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
2705 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2711 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2713 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2716 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2718 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
2722 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2728 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2730 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2733 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2735 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
2739 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2745 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2747 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2750 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2752 dprintk("%s: maxname=%u\n", __func__, *maxname);
2756 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2762 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2764 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2768 if (maxread > 0x7FFFFFFF)
2769 maxread = 0x7FFFFFFF;
2770 *res = (uint32_t)maxread;
2771 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2773 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
2777 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2783 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2785 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2789 if (maxwrite > 0x7FFFFFFF)
2790 maxwrite = 0x7FFFFFFF;
2791 *res = (uint32_t)maxwrite;
2792 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2794 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
2798 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2803 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2805 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2809 bitmap[1] &= ~FATTR4_WORD1_MODE;
2811 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
2815 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2820 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2822 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2825 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2827 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
2831 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
2837 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2839 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2843 if (len < XDR_MAX_NETOBJ) {
2844 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2845 dprintk("%s: nfs_map_name_to_uid failed!\n",
2848 dprintk("%s: name too long (%u)!\n",
2850 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2852 dprintk("%s: uid=%d\n", __func__, (int)*uid);
2856 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
2862 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2864 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2868 if (len < XDR_MAX_NETOBJ) {
2869 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2870 dprintk("%s: nfs_map_group_to_gid failed!\n",
2873 dprintk("%s: name too long (%u)!\n",
2875 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2877 dprintk("%s: gid=%d\n", __func__, (int)*gid);
2881 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2883 uint32_t major = 0, minor = 0;
2887 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2889 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2895 tmp = MKDEV(major, minor);
2896 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2898 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2900 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
2904 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2910 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2912 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2915 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2917 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
2921 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2927 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2929 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2932 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2934 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
2938 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2944 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2946 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2949 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2951 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
2955 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2960 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2962 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2965 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2967 dprintk("%s: space used=%Lu\n", __func__,
2968 (unsigned long long)*used);
2972 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2981 time->tv_sec = (time_t)sec;
2982 time->tv_nsec = (long)nsec;
2986 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2992 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2994 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2995 status = decode_attr_time(xdr, time);
2996 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2998 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
3002 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3008 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3010 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3011 status = decode_attr_time(xdr, time);
3012 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3014 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
3018 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3024 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3026 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3027 status = decode_attr_time(xdr, time);
3028 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3030 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
3034 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
3036 unsigned int attrwords = XDR_QUADLEN(attrlen);
3037 unsigned int nwords = xdr->p - savep;
3039 if (unlikely(attrwords != nwords)) {
3040 dprintk("%s: server returned incorrect attribute length: "
3044 (attrwords < nwords) ? '<' : '>',
3051 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3056 READ32(cinfo->atomic);
3057 READ64(cinfo->before);
3058 READ64(cinfo->after);
3062 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3068 status = decode_op_hdr(xdr, OP_ACCESS);
3074 access->supported = supp;
3075 access->access = acc;
3079 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3084 status = decode_op_hdr(xdr, OP_CLOSE);
3086 nfs_increment_open_seqid(status, res->seqid);
3089 READ_BUF(NFS4_STATEID_SIZE);
3090 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3094 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3099 status = decode_op_hdr(xdr, OP_COMMIT);
3103 COPYMEM(res->verf->verifier, 8);
3107 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3113 status = decode_op_hdr(xdr, OP_CREATE);
3116 if ((status = decode_change_info(xdr, cinfo)))
3120 READ_BUF(bmlen << 2);
3124 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3127 uint32_t attrlen, bitmap[2] = {0};
3130 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3132 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3134 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3136 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3138 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3140 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3142 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3144 status = verify_attr_len(xdr, savep, attrlen);
3146 dprintk("%s: xdr returned %d!\n", __func__, -status);
3150 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3153 uint32_t attrlen, bitmap[2] = {0};
3156 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3158 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3160 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3163 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3165 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3167 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3169 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3171 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3173 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3176 status = verify_attr_len(xdr, savep, attrlen);
3178 dprintk("%s: xdr returned %d!\n", __func__, -status);
3182 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3185 uint32_t attrlen, bitmap[2] = {0};
3188 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3190 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3192 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3195 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3197 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3200 status = verify_attr_len(xdr, savep, attrlen);
3202 dprintk("%s: xdr returned %d!\n", __func__, -status);
3206 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3212 int status, fmode = 0;
3215 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3217 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3220 fattr->bitmap[0] = bitmap[0];
3221 fattr->bitmap[1] = bitmap[1];
3223 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3227 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3229 fattr->type = nfs_type2fmt[type].nfs2type;
3230 fmode = nfs_type2fmt[type].mode;
3232 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3234 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3236 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
3238 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3240 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3241 struct nfs4_fs_locations,
3244 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
3246 fattr->mode |= fmode;
3247 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3249 if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
3251 if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
3253 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3255 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3257 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3259 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3261 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3263 if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
3265 if (fattr->fileid == 0 && fileid != 0)
3266 fattr->fileid = fileid;
3267 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
3268 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
3270 dprintk("%s: xdr returned %d\n", __func__, -status);
3275 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3278 uint32_t attrlen, bitmap[2];
3281 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3283 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3285 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3288 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3290 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3292 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3294 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3296 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3297 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3299 fsinfo->wtpref = fsinfo->wtmax;
3301 status = verify_attr_len(xdr, savep, attrlen);
3303 dprintk("%s: xdr returned %d!\n", __func__, -status);
3307 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3313 /* Zero handle first to allow comparisons */
3314 memset(fh, 0, sizeof(*fh));
3316 status = decode_op_hdr(xdr, OP_GETFH);
3322 if (len > NFS4_FHSIZE)
3326 COPYMEM(fh->data, len);
3330 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3334 status = decode_op_hdr(xdr, OP_LINK);
3337 return decode_change_info(xdr, cinfo);
3341 * We create the owner, so we know a proper owner.id length is 4.
3343 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3345 uint64_t offset, length, clientid;
3347 uint32_t namelen, type;
3354 fl->fl_start = (loff_t)offset;
3355 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3356 if (length == ~(uint64_t)0)
3357 fl->fl_end = OFFSET_MAX;
3358 fl->fl_type = F_WRLCK;
3360 fl->fl_type = F_RDLCK;
3366 return -NFS4ERR_DENIED;
3369 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3374 status = decode_op_hdr(xdr, OP_LOCK);
3378 READ_BUF(NFS4_STATEID_SIZE);
3379 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3380 } else if (status == -NFS4ERR_DENIED)
3381 status = decode_lock_denied(xdr, NULL);
3382 if (res->open_seqid != NULL)
3383 nfs_increment_open_seqid(status, res->open_seqid);
3384 nfs_increment_lock_seqid(status, res->lock_seqid);
3389 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3392 status = decode_op_hdr(xdr, OP_LOCKT);
3393 if (status == -NFS4ERR_DENIED)
3394 return decode_lock_denied(xdr, res->denied);
3398 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3403 status = decode_op_hdr(xdr, OP_LOCKU);
3405 nfs_increment_lock_seqid(status, res->seqid);
3407 READ_BUF(NFS4_STATEID_SIZE);
3408 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3413 static int decode_lookup(struct xdr_stream *xdr)
3415 return decode_op_hdr(xdr, OP_LOOKUP);
3418 /* This is too sick! */
3419 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3422 uint32_t limit_type, nblocks, blocksize;
3426 switch (limit_type) {
3433 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3438 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3441 uint32_t delegation_type;
3444 READ32(delegation_type);
3445 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3446 res->delegation_type = 0;
3449 READ_BUF(NFS4_STATEID_SIZE+4);
3450 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
3451 READ32(res->do_recall);
3453 switch (delegation_type) {
3454 case NFS4_OPEN_DELEGATE_READ:
3455 res->delegation_type = FMODE_READ;
3457 case NFS4_OPEN_DELEGATE_WRITE:
3458 res->delegation_type = FMODE_WRITE|FMODE_READ;
3459 if (decode_space_limit(xdr, &res->maxsize) < 0)
3462 return decode_ace(xdr, NULL, res->server->nfs_client);
3465 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3468 uint32_t savewords, bmlen, i;
3471 status = decode_op_hdr(xdr, OP_OPEN);
3473 nfs_increment_open_seqid(status, res->seqid);
3476 READ_BUF(NFS4_STATEID_SIZE);
3477 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3479 decode_change_info(xdr, &res->cinfo);
3482 READ32(res->rflags);
3487 READ_BUF(bmlen << 2);
3488 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3489 for (i = 0; i < savewords; ++i)
3490 READ32(res->attrset[i]);
3491 for (; i < NFS4_BITMAP_SIZE; i++)
3492 res->attrset[i] = 0;
3494 return decode_delegation(xdr, res);
3496 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
3500 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3505 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3507 nfs_increment_open_seqid(status, res->seqid);
3510 READ_BUF(NFS4_STATEID_SIZE);
3511 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3515 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3520 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3522 nfs_increment_open_seqid(status, res->seqid);
3525 READ_BUF(NFS4_STATEID_SIZE);
3526 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
3530 static int decode_putfh(struct xdr_stream *xdr)
3532 return decode_op_hdr(xdr, OP_PUTFH);
3535 static int decode_putrootfh(struct xdr_stream *xdr)
3537 return decode_op_hdr(xdr, OP_PUTROOTFH);
3540 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3542 struct kvec *iov = req->rq_rcv_buf.head;
3544 uint32_t count, eof, recvd, hdrlen;
3547 status = decode_op_hdr(xdr, OP_READ);
3553 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3554 recvd = req->rq_rcv_buf.len - hdrlen;
3555 if (count > recvd) {
3556 dprintk("NFS: server cheating in read reply: "
3557 "count %u > recvd %u\n", count, recvd);
3561 xdr_read_pages(xdr, count);
3567 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3569 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3570 struct page *page = *rcvbuf->pages;
3571 struct kvec *iov = rcvbuf->head;
3573 u32 recvd, pglen = rcvbuf->page_len;
3574 __be32 *end, *entry, *p, *kaddr;
3575 unsigned int nr = 0;
3578 status = decode_op_hdr(xdr, OP_READDIR);
3582 COPYMEM(readdir->verifier.data, 8);
3583 dprintk("%s: verifier = %08x:%08x\n",
3585 ((u32 *)readdir->verifier.data)[0],
3586 ((u32 *)readdir->verifier.data)[1]);
3589 hdrlen = (char *) p - (char *) iov->iov_base;
3590 recvd = rcvbuf->len - hdrlen;
3593 xdr_read_pages(xdr, pglen);
3595 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3596 kaddr = p = kmap_atomic(page, KM_USER0);
3597 end = p + ((pglen + readdir->pgbase) >> 2);
3600 /* Make sure the packet actually has a value_follows and EOF entry */
3601 if ((entry + 1) > end)
3604 for (; *p++; nr++) {
3605 u32 len, attrlen, xlen;
3608 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3609 p += 2; /* cookie */
3610 len = ntohl(*p++); /* filename length */
3611 if (len > NFS4_MAXNAMLEN) {
3612 dprintk("NFS: giant filename in readdir (len 0x%x)\n",
3616 xlen = XDR_QUADLEN(len);
3617 if (end - p < xlen + 1)
3619 dprintk("filename = %*s\n", len, (char *)p);
3621 len = ntohl(*p++); /* bitmap length */
3622 if (end - p < len + 1)
3625 attrlen = XDR_QUADLEN(ntohl(*p++));
3626 if (end - p < attrlen + 2)
3628 p += attrlen; /* attributes */
3632 * Apparently some server sends responses that are a valid size, but
3633 * contain no entries, and have value_follows==0 and EOF==0. For
3634 * those, just set the EOF marker.
3636 if (!nr && entry[1] == 0) {
3637 dprintk("NFS: readdir reply truncated!\n");
3641 kunmap_atomic(kaddr, KM_USER0);
3645 * When we get a short packet there are 2 possibilities. We can
3646 * return an error, or fix up the response to look like a valid
3647 * response and return what we have so far. If there are no
3648 * entries and the packet was short, then return -EIO. If there
3649 * are valid entries in the response, return them and pretend that
3650 * the call was successful, but incomplete. The caller can retry the
3651 * readdir starting at the last cookie.
3653 dprintk("%s: short packet at entry %d\n", __func__, nr);
3654 entry[0] = entry[1] = 0;
3658 kunmap_atomic(kaddr, KM_USER0);
3659 return -errno_NFSERR_IO;
3662 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3664 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3665 struct kvec *iov = rcvbuf->head;
3672 status = decode_op_hdr(xdr, OP_READLINK);
3676 /* Convert length of symlink */
3679 if (len >= rcvbuf->page_len || len <= 0) {
3680 dprintk("nfs: server returned giant symlink!\n");
3681 return -ENAMETOOLONG;
3683 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3684 recvd = req->rq_rcv_buf.len - hdrlen;
3686 dprintk("NFS: server cheating in readlink reply: "
3687 "count %u > recvd %u\n", len, recvd);
3690 xdr_read_pages(xdr, len);
3692 * The XDR encode routine has set things up so that
3693 * the link text will be copied directly into the
3694 * buffer. We just have to do overflow-checking,
3695 * and and null-terminate the text (the VFS expects
3696 * null-termination).
3698 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3699 kaddr[len+rcvbuf->page_base] = '\0';
3700 kunmap_atomic(kaddr, KM_USER0);
3704 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3708 status = decode_op_hdr(xdr, OP_REMOVE);
3711 status = decode_change_info(xdr, cinfo);
3716 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3717 struct nfs4_change_info *new_cinfo)
3721 status = decode_op_hdr(xdr, OP_RENAME);
3724 if ((status = decode_change_info(xdr, old_cinfo)))
3726 status = decode_change_info(xdr, new_cinfo);
3731 static int decode_renew(struct xdr_stream *xdr)
3733 return decode_op_hdr(xdr, OP_RENEW);
3737 decode_restorefh(struct xdr_stream *xdr)
3739 return decode_op_hdr(xdr, OP_RESTOREFH);
3742 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3748 struct kvec *iov = req->rq_rcv_buf.head;
3752 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3754 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3756 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3759 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3761 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3765 /* We ignore &savep and don't do consistency checks on
3766 * the attr length. Let userspace figure it out.... */
3767 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3768 recvd = req->rq_rcv_buf.len - hdrlen;
3769 if (attrlen > recvd) {
3770 dprintk("NFS: server cheating in getattr"
3771 " acl reply: attrlen %u > recvd %u\n",
3775 xdr_read_pages(xdr, attrlen);
3778 status = -EOPNOTSUPP;
3785 decode_savefh(struct xdr_stream *xdr)
3787 return decode_op_hdr(xdr, OP_SAVEFH);
3790 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3796 status = decode_op_hdr(xdr, OP_SETATTR);
3801 READ_BUF(bmlen << 2);
3805 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
3813 if (opnum != OP_SETCLIENTID) {
3814 dprintk("nfs: decode_setclientid: Server returned operation"
3819 if (nfserr == NFS_OK) {
3820 READ_BUF(8 + NFS4_VERIFIER_SIZE);
3821 READ64(clp->cl_clientid);
3822 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
3823 } else if (nfserr == NFSERR_CLID_INUSE) {
3826 /* skip netid string */
3831 /* skip uaddr string */
3835 return -NFSERR_CLID_INUSE;
3837 return nfs4_stat_to_errno(nfserr);
3842 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3844 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3847 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3852 status = decode_op_hdr(xdr, OP_WRITE);
3858 READ32(res->verf->committed);
3859 COPYMEM(res->verf->verifier, 8);
3863 static int decode_delegreturn(struct xdr_stream *xdr)
3865 return decode_op_hdr(xdr, OP_DELEGRETURN);
3869 * END OF "GENERIC" DECODE ROUTINES.
3873 * Decode OPEN_DOWNGRADE response
3875 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
3877 struct xdr_stream xdr;
3878 struct compound_hdr hdr;
3881 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3882 status = decode_compound_hdr(&xdr, &hdr);
3885 status = decode_putfh(&xdr);
3888 status = decode_open_downgrade(&xdr, res);
3891 decode_getfattr(&xdr, res->fattr, res->server);
3897 * Decode ACCESS response
3899 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
3901 struct xdr_stream xdr;
3902 struct compound_hdr hdr;
3905 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3906 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3908 status = decode_putfh(&xdr);
3911 status = decode_access(&xdr, res);
3914 decode_getfattr(&xdr, res->fattr, res->server);
3920 * Decode LOOKUP response
3922 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
3924 struct xdr_stream xdr;
3925 struct compound_hdr hdr;
3928 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3929 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3931 if ((status = decode_putfh(&xdr)) != 0)
3933 if ((status = decode_lookup(&xdr)) != 0)
3935 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3937 status = decode_getfattr(&xdr, res->fattr, res->server);
3943 * Decode LOOKUP_ROOT response
3945 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
3947 struct xdr_stream xdr;
3948 struct compound_hdr hdr;
3951 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3952 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3954 if ((status = decode_putrootfh(&xdr)) != 0)
3956 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3957 status = decode_getfattr(&xdr, res->fattr, res->server);
3963 * Decode REMOVE response
3965 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
3967 struct xdr_stream xdr;
3968 struct compound_hdr hdr;
3971 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3972 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3974 if ((status = decode_putfh(&xdr)) != 0)
3976 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3978 decode_getfattr(&xdr, &res->dir_attr, res->server);
3984 * Decode RENAME response
3986 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
3988 struct xdr_stream xdr;
3989 struct compound_hdr hdr;
3992 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3993 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3995 if ((status = decode_putfh(&xdr)) != 0)
3997 if ((status = decode_savefh(&xdr)) != 0)
3999 if ((status = decode_putfh(&xdr)) != 0)
4001 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
4003 /* Current FH is target directory */
4004 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
4006 if ((status = decode_restorefh(&xdr)) != 0)
4008 decode_getfattr(&xdr, res->old_fattr, res->server);
4014 * Decode LINK response
4016 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
4018 struct xdr_stream xdr;
4019 struct compound_hdr hdr;
4022 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4023 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4025 if ((status = decode_putfh(&xdr)) != 0)
4027 if ((status = decode_savefh(&xdr)) != 0)
4029 if ((status = decode_putfh(&xdr)) != 0)
4031 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
4034 * Note order: OP_LINK leaves the directory as the current
4037 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
4039 if ((status = decode_restorefh(&xdr)) != 0)
4041 decode_getfattr(&xdr, res->fattr, res->server);
4047 * Decode CREATE response
4049 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4051 struct xdr_stream xdr;
4052 struct compound_hdr hdr;
4055 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4056 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4058 if ((status = decode_putfh(&xdr)) != 0)
4060 if ((status = decode_savefh(&xdr)) != 0)
4062 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
4064 if ((status = decode_getfh(&xdr, res->fh)) != 0)
4066 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
4068 if ((status = decode_restorefh(&xdr)) != 0)
4070 decode_getfattr(&xdr, res->dir_fattr, res->server);
4076 * Decode SYMLINK response
4078 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
4080 return nfs4_xdr_dec_create(rqstp, p, res);
4084 * Decode GETATTR response
4086 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
4088 struct xdr_stream xdr;
4089 struct compound_hdr hdr;
4092 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4093 status = decode_compound_hdr(&xdr, &hdr);
4096 status = decode_putfh(&xdr);
4099 status = decode_getfattr(&xdr, res->fattr, res->server);
4105 * Encode an SETACL request
4108 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
4110 struct xdr_stream xdr;
4111 struct compound_hdr hdr = {
4116 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
4117 encode_compound_hdr(&xdr, &hdr);
4118 status = encode_putfh(&xdr, args->fh, &hdr);
4121 status = encode_setacl(&xdr, args, &hdr);
4128 * Decode SETACL response
4131 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, void *res)
4133 struct xdr_stream xdr;
4134 struct compound_hdr hdr;
4137 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4138 status = decode_compound_hdr(&xdr, &hdr);
4141 status = decode_putfh(&xdr);
4144 status = decode_setattr(&xdr, res);
4150 * Decode GETACL response
4153 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, size_t *acl_len)
4155 struct xdr_stream xdr;
4156 struct compound_hdr hdr;
4159 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4160 status = decode_compound_hdr(&xdr, &hdr);
4163 status = decode_putfh(&xdr);
4166 status = decode_getacl(&xdr, rqstp, acl_len);
4173 * Decode CLOSE response
4175 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
4177 struct xdr_stream xdr;
4178 struct compound_hdr hdr;
4181 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4182 status = decode_compound_hdr(&xdr, &hdr);
4185 status = decode_putfh(&xdr);
4188 status = decode_close(&xdr, res);
4192 * Note: Server may do delete on close for this file
4193 * in which case the getattr call will fail with
4194 * an ESTALE error. Shouldn't be a problem,
4195 * though, since fattr->valid will remain unset.
4197 decode_getfattr(&xdr, res->fattr, res->server);
4203 * Decode OPEN response
4205 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4207 struct xdr_stream xdr;
4208 struct compound_hdr hdr;
4211 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4212 status = decode_compound_hdr(&xdr, &hdr);
4215 status = decode_putfh(&xdr);
4218 status = decode_savefh(&xdr);
4221 status = decode_open(&xdr, res);
4224 if (decode_getfh(&xdr, &res->fh) != 0)
4226 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4228 if (decode_restorefh(&xdr) != 0)
4230 decode_getfattr(&xdr, res->dir_attr, res->server);
4236 * Decode OPEN_CONFIRM response
4238 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *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_open_confirm(&xdr, res);
4257 * Decode OPEN response
4259 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
4261 struct xdr_stream xdr;
4262 struct compound_hdr hdr;
4265 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4266 status = decode_compound_hdr(&xdr, &hdr);
4269 status = decode_putfh(&xdr);
4272 status = decode_open(&xdr, res);
4275 decode_getfattr(&xdr, res->f_attr, res->server);
4281 * Decode SETATTR response
4283 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
4285 struct xdr_stream xdr;
4286 struct compound_hdr hdr;
4289 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4290 status = decode_compound_hdr(&xdr, &hdr);
4293 status = decode_putfh(&xdr);
4296 status = decode_setattr(&xdr, res);
4299 status = decode_getfattr(&xdr, res->fattr, res->server);
4300 if (status == NFS4ERR_DELAY)
4307 * Decode LOCK response
4309 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
4311 struct xdr_stream xdr;
4312 struct compound_hdr hdr;
4315 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4316 status = decode_compound_hdr(&xdr, &hdr);
4319 status = decode_putfh(&xdr);
4322 status = decode_lock(&xdr, res);
4328 * Decode LOCKT response
4330 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
4332 struct xdr_stream xdr;
4333 struct compound_hdr hdr;
4336 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4337 status = decode_compound_hdr(&xdr, &hdr);
4340 status = decode_putfh(&xdr);
4343 status = decode_lockt(&xdr, res);
4349 * Decode LOCKU response
4351 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
4353 struct xdr_stream xdr;
4354 struct compound_hdr hdr;
4357 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4358 status = decode_compound_hdr(&xdr, &hdr);
4361 status = decode_putfh(&xdr);
4364 status = decode_locku(&xdr, res);
4370 * Decode READLINK response
4372 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, void *res)
4374 struct xdr_stream xdr;
4375 struct compound_hdr hdr;
4378 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4379 status = decode_compound_hdr(&xdr, &hdr);
4382 status = decode_putfh(&xdr);
4385 status = decode_readlink(&xdr, rqstp);
4391 * Decode READDIR response
4393 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
4395 struct xdr_stream xdr;
4396 struct compound_hdr hdr;
4399 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4400 status = decode_compound_hdr(&xdr, &hdr);
4403 status = decode_putfh(&xdr);
4406 status = decode_readdir(&xdr, rqstp, res);
4412 * Decode Read response
4414 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
4416 struct xdr_stream xdr;
4417 struct compound_hdr hdr;
4420 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4421 status = decode_compound_hdr(&xdr, &hdr);
4424 status = decode_putfh(&xdr);
4427 status = decode_read(&xdr, rqstp, res);
4429 status = res->count;
4435 * Decode WRITE response
4437 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4439 struct xdr_stream xdr;
4440 struct compound_hdr hdr;
4443 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4444 status = decode_compound_hdr(&xdr, &hdr);
4447 status = decode_putfh(&xdr);
4450 status = decode_write(&xdr, res);
4453 decode_getfattr(&xdr, res->fattr, res->server);
4455 status = res->count;
4461 * Decode COMMIT response
4463 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
4465 struct xdr_stream xdr;
4466 struct compound_hdr hdr;
4469 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4470 status = decode_compound_hdr(&xdr, &hdr);
4473 status = decode_putfh(&xdr);
4476 status = decode_commit(&xdr, res);
4479 decode_getfattr(&xdr, res->fattr, res->server);
4487 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4489 struct xdr_stream xdr;
4490 struct compound_hdr hdr;
4493 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4494 status = decode_compound_hdr(&xdr, &hdr);
4496 status = decode_putfh(&xdr);
4498 status = decode_fsinfo(&xdr, fsinfo);
4505 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *pathconf)
4507 struct xdr_stream xdr;
4508 struct compound_hdr hdr;
4511 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4512 status = decode_compound_hdr(&xdr, &hdr);
4514 status = decode_putfh(&xdr);
4516 status = decode_pathconf(&xdr, pathconf);
4523 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *fsstat)
4525 struct xdr_stream xdr;
4526 struct compound_hdr hdr;
4529 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4530 status = decode_compound_hdr(&xdr, &hdr);
4532 status = decode_putfh(&xdr);
4534 status = decode_statfs(&xdr, fsstat);
4539 * GETATTR_BITMAP request
4541 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
4543 struct xdr_stream xdr;
4544 struct compound_hdr hdr;
4547 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4548 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4550 if ((status = decode_putfh(&xdr)) != 0)
4552 status = decode_server_caps(&xdr, res);
4558 * Decode RENEW response
4560 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
4562 struct xdr_stream xdr;
4563 struct compound_hdr hdr;
4566 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4567 status = decode_compound_hdr(&xdr, &hdr);
4569 status = decode_renew(&xdr);
4574 * a SETCLIENTID request
4576 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
4577 struct nfs_client *clp)
4579 struct xdr_stream xdr;
4580 struct compound_hdr hdr;
4583 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4584 status = decode_compound_hdr(&xdr, &hdr);
4586 status = decode_setclientid(&xdr, clp);
4591 * a SETCLIENTID_CONFIRM request
4593 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
4595 struct xdr_stream xdr;
4596 struct compound_hdr hdr;
4599 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4600 status = decode_compound_hdr(&xdr, &hdr);
4602 status = decode_setclientid_confirm(&xdr);
4604 status = decode_putrootfh(&xdr);
4606 status = decode_fsinfo(&xdr, fsinfo);
4611 * DELEGRETURN request
4613 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
4615 struct xdr_stream xdr;
4616 struct compound_hdr hdr;
4619 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4620 status = decode_compound_hdr(&xdr, &hdr);
4623 status = decode_putfh(&xdr);
4626 status = decode_delegreturn(&xdr);
4627 decode_getfattr(&xdr, res->fattr, res->server);
4633 * FS_LOCATIONS request
4635 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations *res)
4637 struct xdr_stream xdr;
4638 struct compound_hdr hdr;
4641 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4642 status = decode_compound_hdr(&xdr, &hdr);
4645 if ((status = decode_putfh(&xdr)) != 0)
4647 if ((status = decode_lookup(&xdr)) != 0)
4649 xdr_enter_page(&xdr, PAGE_SIZE);
4650 status = decode_getfattr(&xdr, &res->fattr, res->server);
4655 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
4657 uint32_t bitmap[2] = {0};
4662 return ERR_PTR(-EAGAIN);
4664 return ERR_PTR(-EBADCOOKIE);
4667 entry->prev_cookie = entry->cookie;
4668 p = xdr_decode_hyper(p, &entry->cookie);
4669 entry->len = ntohl(*p++);
4670 entry->name = (const char *) p;
4671 p += XDR_QUADLEN(entry->len);
4674 * In case the server doesn't return an inode number,
4675 * we fake one here. (We don't use inode number 0,
4676 * since glibc seems to choke on it...)
4680 len = ntohl(*p++); /* bitmap length */
4682 bitmap[0] = ntohl(*p++);
4684 bitmap[1] = ntohl(*p++);
4688 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4690 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4691 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4692 /* Ignore the return value of rdattr_error for now */
4696 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4697 xdr_decode_hyper(p, &entry->ino);
4698 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4699 xdr_decode_hyper(p, &entry->ino);
4703 entry->eof = !p[0] && p[1];
4708 * We need to translate between nfs status return values and
4709 * the local errno values which may not be the same.
4716 { NFS4ERR_PERM, -EPERM },
4717 { NFS4ERR_NOENT, -ENOENT },
4718 { NFS4ERR_IO, -errno_NFSERR_IO},
4719 { NFS4ERR_NXIO, -ENXIO },
4720 { NFS4ERR_ACCESS, -EACCES },
4721 { NFS4ERR_EXIST, -EEXIST },
4722 { NFS4ERR_XDEV, -EXDEV },
4723 { NFS4ERR_NOTDIR, -ENOTDIR },
4724 { NFS4ERR_ISDIR, -EISDIR },
4725 { NFS4ERR_INVAL, -EINVAL },
4726 { NFS4ERR_FBIG, -EFBIG },
4727 { NFS4ERR_NOSPC, -ENOSPC },
4728 { NFS4ERR_ROFS, -EROFS },
4729 { NFS4ERR_MLINK, -EMLINK },
4730 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
4731 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
4732 { NFS4ERR_DQUOT, -EDQUOT },
4733 { NFS4ERR_STALE, -ESTALE },
4734 { NFS4ERR_BADHANDLE, -EBADHANDLE },
4735 { NFS4ERR_BADOWNER, -EINVAL },
4736 { NFS4ERR_BADNAME, -EINVAL },
4737 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
4738 { NFS4ERR_NOTSUPP, -ENOTSUPP },
4739 { NFS4ERR_TOOSMALL, -ETOOSMALL },
4740 { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
4741 { NFS4ERR_BADTYPE, -EBADTYPE },
4742 { NFS4ERR_LOCKED, -EAGAIN },
4743 { NFS4ERR_RESOURCE, -EREMOTEIO },
4744 { NFS4ERR_SYMLINK, -ELOOP },
4745 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
4746 { NFS4ERR_DEADLOCK, -EDEADLK },
4747 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
4748 * to be handled by a
4755 * Convert an NFS error code to a local one.
4756 * This one is used jointly by NFSv2 and NFSv3.
4759 nfs4_stat_to_errno(int stat)
4762 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4763 if (nfs_errtbl[i].stat == stat)
4764 return nfs_errtbl[i].errno;
4766 if (stat <= 10000 || stat > 10100) {
4767 /* The server is looney tunes. */
4768 return -ESERVERFAULT;
4770 /* If we cannot translate the error, the recovery routines should
4772 * Note: remaining NFSv4 error codes have values > 10000, so should
4773 * not conflict with native Linux error codes.
4778 #define PROC(proc, argtype, restype) \
4779 [NFSPROC4_CLNT_##proc] = { \
4780 .p_proc = NFSPROC4_COMPOUND, \
4781 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4782 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4783 .p_arglen = NFS4_##argtype##_sz, \
4784 .p_replen = NFS4_##restype##_sz, \
4785 .p_statidx = NFSPROC4_CLNT_##proc, \
4789 struct rpc_procinfo nfs4_procedures[] = {
4790 PROC(READ, enc_read, dec_read),
4791 PROC(WRITE, enc_write, dec_write),
4792 PROC(COMMIT, enc_commit, dec_commit),
4793 PROC(OPEN, enc_open, dec_open),
4794 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4795 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4796 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4797 PROC(CLOSE, enc_close, dec_close),
4798 PROC(SETATTR, enc_setattr, dec_setattr),
4799 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4800 PROC(RENEW, enc_renew, dec_renew),
4801 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4802 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4803 PROC(LOCK, enc_lock, dec_lock),
4804 PROC(LOCKT, enc_lockt, dec_lockt),
4805 PROC(LOCKU, enc_locku, dec_locku),
4806 PROC(ACCESS, enc_access, dec_access),
4807 PROC(GETATTR, enc_getattr, dec_getattr),
4808 PROC(LOOKUP, enc_lookup, dec_lookup),
4809 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4810 PROC(REMOVE, enc_remove, dec_remove),
4811 PROC(RENAME, enc_rename, dec_rename),
4812 PROC(LINK, enc_link, dec_link),
4813 PROC(SYMLINK, enc_symlink, dec_symlink),
4814 PROC(CREATE, enc_create, dec_create),
4815 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4816 PROC(STATFS, enc_statfs, dec_statfs),
4817 PROC(READLINK, enc_readlink, dec_readlink),
4818 PROC(READDIR, enc_readdir, dec_readdir),
4819 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4820 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
4821 PROC(GETACL, enc_getacl, dec_getacl),
4822 PROC(SETACL, enc_setacl, dec_setacl),
4823 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
4826 struct rpc_version nfs_version4 = {
4828 .nrprocs = ARRAY_SIZE(nfs4_procedures),
4829 .procs = nfs4_procedures